Patent Grant
11396442
This application claims priority to Chinese Patent Application No. 202010385859.4, filed May 9, 2020, and all the benefits accruing therefrom under 35 U.S.C. § 119, the contents of which in its entirety are herein incorporated by reference.
The invention pertains to the technical field of elevator, and relates to a jumping elevator system and a jumping method used in a construction process of a building.
In a construction process of a building, materials and/or workers need to be conveyed up and down between floors basically built well. Under such need, a jumping elevator (or referred to as jumping lift) system is typically used in the construction process of the building; with an elevator car of the jumping elevator system traveling up and down in a well-built hoistway (or referred to as a lift shaft) of the building, materials and/or workers can be conveniently conveyed between different landings. Also, as the construction process of the building advances continuously, the height or level of the hoistway also advances gradually, and the traveling height of the elevator car of the jumping elevator system in the hoistway also needs to be increased continuously, generally through a jumping platform.
Known conventional elevator systems typically use ropes for lifting, and generally require an elevator machine room to be provided to accommodate drives such as tractor to pull the ropes, thereby lifting the elevator car. Therefore, corresponding space is leaved generally in the hoistway (e.g., at the top of the hoistway) of the building to provide the elevator machine rooms.
For a jumping elevator system, an elevator machine room also needs to be provided to contain a tractor and the like. At present, the elevator machine room of the jumping elevator system is generally arranged in a hoist, and even the elevator machine room is arranged on a jumping platform and can jump along with the jumping platform.
Moreover, before the jumping platform jumps up, guide rails need to be extended and newly extended guide rails need to be positioned and mounted on the hoistway, thereby preparing for extending traveling height of elevator car.
According to an aspect of the disclosure, a jumping method of a jumping elevator system centrifugal compressor is provided and comprises: preliminarily positioning and mounting, by means of a temporary working platform at a first height, a guide rail on the hoistway substantially corresponding to the first height; removing the temporary working platform from the position, corresponding to the first height, of the hoistway; lifting, by use of a lifting assembly, a jumping platform from a second height to a third height, wherein the third height is greater than the second height and less than or equal to the first height; and lifting, by use of the lifting assembly, the elevator car to extend its traveling distance in the hoistway, and operating, during lifting of the elevator car, on the top of the elevator car for reinforcing the mount of the guide rail
In accordance with an additional or alternative embodiment, the method further comprises: positioning and mounting, prior to the preliminary positioning and mounting of the guide rail, the temporary working platform on a landing corresponding to the first height by a first upright.
In accordance with an additional or alternative embodiment, the method further comprises: reloading, prior to lifting the elevator car, the lifting assembly on the elevator car from the jumping platform.
In accordance with an additional or alternative embodiment, the method further comprises: fixing, prior to lifting the jumping platform, the elevator car to the guide rail below the second height; and releasing, prior to lifting the elevator car, the fixation of the elevator car relative to the guide rail.
In accordance with an additional or alternative embodiment, the method further comprises: fixing, prior to lifting the jumping platform, a counterweight in the hoistway; and releasing the fixation of the counterweight after lifting the elevator car.
According to another aspect of the disclosure, a jumping elevator system used in a construction process of a building is provided and includes: an elevator car capable of traveling up and down along a guide rail in a hoistway of the building; a counterweight disposed in the hoistway; a jumping platform capable of jumping along with an increase of height of the hoistway; an elevator machine room which is independently arranged relative to the jumping platform and is incapable of jumping along with the jumping platform; a temporary working platform which is independently arranged relative to the jumping platform and is provided for preliminarily positioning and mounting the guide rail relative to the hoistway prior to lifting the jumping platform; and a lifting assembly provided for lifting the jumping platform to a higher height when the height of the hoistway is increased, and further lifting the elevator car after lifting the jumping platform so as to extend its traveling distance in the hoistway
In accordance with an additional or alternative embodiment, the elevator machine room is fixed on a landing outside of the hoistway; the jumping elevator system further includes a pulley assembly which at least comprises a rope, a top guide sheave and a bottom guide sheave; wherein the top guide sheave is arranged on the jumping platform and is capable of jumping along with the jumping platform, the top guide sheave and the bottom guide sheave are arranged to guide the rope to extend at least from the hoistway toward a traction sheave in the elevator machine room outside of the hoistway.
In accordance with an additional or alternative embodiment, the top guide sheave and the bottom guide sheave are further arranged to guide the rope to extend at least from a top of the elevator car in the hoistway toward the traction sheave in the elevator machine room outside of the hoistway such that a tractor can transmit a traction force to the top of the elevator car through the pulley assembly.
In accordance with an additional or alternative embodiment, the pulley assembly further comprises a roof pulley provided at the top of the elevator car; the top guide sheave and the bottom guide sheave are further arranged to guide the rope to extend at least from the roof pulley toward the traction sheave in the elevator machine room outside of the hoistway such that the tractor can transmit a traction force to the top of the elevator car through the pulley assembly.
In accordance with an additional or alternative embodiment, a first end of the rope is secured to the jumping platform, the rope extends downwards from the first end, wraps through the roof pulley, extends upwards and wraps through a first top guide sheave of the top guide sheave, extends downwards and wraps through a first bottom guide sheave of the bottom guide sheave and continues to extend to the traction sheave of the elevator machine room; after wrapping through the traction sheave, the rope then extends laterally and wraps through a second bottom guide sheave in the bottom guide sheave, extends upwards and wraps through a second top guide sheave of the top guide sheave, and continues to extend downwards to the counterweight.
In accordance with an additional or alternative embodiment, the number of the first top guide sheaves is two and they are arranged laterally on the jumping platform, the number of the first bottom guide sheaves/the second bottom guide sheaves is two and they are arranged substantially laterally.
In accordance with an additional or alternative embodiment, a first end of the rope is secured at the top of the elevator car, the rope extends upwards from the first end, wraps through a first top guide sheave of the top guide sheave, extends downwards and wraps through a first bottom guide sheave of the bottom guide sheave, and continues to extend to the traction sheave in the elevator machine room; after wrapping through the traction sheave, the rope then extends laterally and wraps through a second bottom guide sheave of the bottom guide sheave, extends upwards and wraps through a second top guide sheave of the top guide sheave, and continues to extend downwards to the counterweight.
In accordance with an additional or alternative embodiment, the jumping platform comprises a second upright and a cable-stayed member, wherein the second upright is removably positioned and mounted relative to a landing, an end of the jumping platform proximate to a lower end of the second upright is removably mounted on the landing, two ends of the cable-stayed member are pivotally connected to the upper end of the second upright and the jumping platform respectively.
In accordance with an additional or alternative embodiment, a fixing member is provided corresponding to the elevator car for fixing the elevator car to the guide rail during lifting of the jumping platform.
In accordance with an additional or alternative embodiment, the lifting assembly comprises: a suspension beam; a hoist detachably installed on the jumping platform or the elevator car; a diverting pulley mounted on the suspension beam; and a hoisting member extending from the hoist, wrapping through the diverting pulley, and extending onto the jumping platform or the elevator car.
In accordance with an additional or alternative embodiment, the hoist is a cable climber.
In accordance with an additional or alternative embodiment, the temporary working platform is positioned and mounted on a respective landing.
In accordance with an additional or alternative embodiment, rope compensation is provided from a first end of the rope during lifting of the elevator car.
In accordance with an additional or alternative embodiment, the traction ratio of the jumping elevator system is 2:1 or 1:1.
The above features, operations and advantages of the present invention will become more obvious from the following descriptions and drawings.
The above and other objects and advantages of the present invention will become clearer and more complete from the following detailed descriptions given in conjunction with the drawings, wherein the same or similar elements are denoted by the same reference sign.
The present invention is described more fully hereinafter by reference to the accompanying drawings, in which illustrative embodiments of the invention are illustrated. The invention can, however, be realized in different embodiments and should not be construed as limited to the various embodiments set forth herein. The above-described embodiments are presented in order to provide a thorough and complete disclosure herein and thus achieve a more complete and accurate understanding of the protection scope of the present invention.
Terms such as “comprising” and “including” mean that subject matter of present invention does not exclude cases where there are other components not directly or explicitly recited, in addition to having components that are directly and explicitly recited in specification and claims.
In the following depiction, when it is alleged that a component is “fixed/secured” to another component, it may be directly fixed/secured to another component or may be indirectly fixed/secured to another component through an intermediate component. On the contrary, when it is alleged that a component is “directly fixed/secured” to another component, an intermediate component does not exist.
In the following depiction, the direction corresponding to “up-down direction” corresponds to the direction of the hoist, the direction corresponding to “left-right direction” or “lateral direction” is a direction approximately directing from a landing toward interior of the hoistway. It is to be understood that these directional terms are relative concepts, which are used to describe and clarify a relative position.
As shown in
With reference to
Wherein the elevator machine room 130 is independently arranged relative to the jumping platform 150 and does not jump along with the jumping platform 150. The elevator machine room 130 can be provided with a tractor (not shown in the figures) and a traction sheave 131, and can also be provided with electrical equipment such as a control cabinet. In consideration that the elevator machine room 130 has a critical environmental requirement but it is difficult to provide a safe and dry environment (e.g., the bottom of the hoistway 910 prone to water accumulation, etc.) for the hoistway 910 of a building not constructed well, the elevator machine room 130 is moved outside of the hoistway 910 in embodiments of the present invention, for example, the elevator machine room 130 is fixed to the landing 920 outside of the hoistway 910; thus the elevator machine room 130 also does not need to be lifted by the lifting assembly or the like and also does not jump along with the jumping platform 150. The floor number of the landing 920 to which the elevator machine room 130 is fixed is not limiting, and the elevator machine room 130 may, but is not limited to, be fixedly disposed on the landing 9201, e.g., may also be fixed on other landing 920 as desired.
The elevator machine room 130 may be fixedly mounted as a temporary elevator machine room on, for example, the landing 9201; in an embodiment, the temporary elevator machine room can be removed, and then be transferred and installed to a predetermined location in the hoistway 910 (e.g., the top of the hoistway 910) for installation after completing the construction of the building, so as to transform the jumping elevator system 10 of the embodiment of the invention into a conventional elevator system normally used in an well-built building, which can realize the recycling of components (such as a tractor and the like) of the elevator machine room 130, and the cost is greatly reduced for a constructor of the building; moreover, it is also very convenient for operations of transferring and installing the elevator machine room 130 on the landing 920. The elevator machine room 130 can be selectively disposed adjacent to the hoistway 910, which will reduce the difficulty of arranging the pulley assembly of the following embodiments and also facilitate reducing traction power requirement on the tractor.
Therein, the elevator car 110 can travel up and down along the guide rail 930 in the well-built hoistway 910 of the building under a traction, for example, of the traction sheave 131. It should be noted that the guide rail 930 is a basic component for supporting the elevator car 110 to travel in the hoistway 910; thus, if it is desired that the elevator car 110 could travel to certain height, such as landing 920N+1, the guide rail 930 in the hoistway 910 should be positioned and mounted to at least landing 920N+1 or above the landing 920N+1.
With continued reference to
The rope 141 may be various types of traction member (e.g., banded rope) adaptable for elevator systems, whose cross-sectional shape may be generally circular, square, etc., and the materials used of which are not limiting. The rope 141 has two ends, i.e., a first end 1411 and a second end 1412, which are both secured to the jumping platform 150 (e.g., secured to a spandrel girder of the jumping platform 150) in the embodiment shown in
With continued reference to
In an embodiment, the arrangement of the top guide sheaves 143 and the bottom guide sheaves 144 as well as the winding of the rope 141 can be selected to achieve a traction ratio (or referred to as a suspension ratio) of 2:1, for example, a roof pulley 142 can also be provided at the top of the elevator car 110 and a diverting sheave 145 can be provided at the top of the counterweight 120; the top guide sheaves 143 and the bottom guide sheaves 144 are further arranged to guide the rope 141 to extend at least from the roof pulley 142 toward the traction sheave 131 in the elevator machine room 130 outside of the hoistway 910 such that the tractor can transmit a traction force to the top of the elevator car 110 through the pulley assembly. In this way, it can achieve a traction ratio of 2:1 for lifting the elevator car 110 from the top of the elevator car 110.
Referring to
In an embodiment, there may be two first top guide sheaves 143a and they are arranged laterally on the jumping platform 150, thereby guiding the rope 141 in a left-right direction to guide in a direction toward the elevator machine room 130; the first bottom guide sheave 144a may be one and it can be disposed in the hoistway 910 and proximate to the elevator machine room 130; the second bottom guide sheaves 144b may be two and arranged approximately laterally, one of which may be disposed in the elevator machine room 130 and the other which is disposed in the hoistway 910, thereby guiding the rope 141 in a left-right direction to guide in a direction toward the hoistway 910.
It should be noted that the pulley assembly may achieve the traction ratio of 2:1 in other arrangements. By way of example, the diverting sheave 145 may also be not provided on the counterweight 120 of
Still referring to
In an embodiment, the jumping platform 150 includes a second upright 159 and a cable-stayed member 158, and the second upright 159 and the cable-stayed member 158 are deposed for conveniently and removably fixing the jumping platform 150 at certain landing; wherein the second upright 159 is removably positioned and mounted relative to the landing 920N (e.g., stuck at a landing door gate of the landing 920N in up and down direction), the end of jumping platform 150, close to the lower end of second upright 159, is removably mounted on the landing 920N (e.g., projected to the floor of the landing 920N by a retractable member, thereby simply lapping the landing 920N); and two ends of the cable-stayed member 158 are pivotably connected to the upper end of the second upright 159 and the jumping platform 150 respectively; therefore, the cable-stayed member 158, the second upright 159 and the right end part of the jumping platform 150 can construct a relatively stable structure with right triangle, and the jumping platform 150 is fixedly mounted in the hoistway 910 corresponding to the landing 920N. When the jumping platform 150 needs to be removed, the second upright 159 can be dismounted from the landing 920N, and the second upright 159 and the cable-stayed member 158 can be rotated and placed on the jumping platform 150, ready for removing the jumping platform 150. After the jumping platform 150 jumps to the next landing (e.g., landing 920N+2), the second upright 159 is pulled out and positioned and mounted at the landing 920N+2, so that its operation is very convenient.
It is to be noted that, since no elevator machine room is provided on the jumping platform 150, the jumping platform 150 can be implemented in a relatively simple structure and is lightweight, for example, the jumping platform 150 can be implemented in a simple spandrel girder frame or the like and occupies a small hoistway space in the up-down direction; moreover, the jumping platform 150 also thus can be implemented at low cost even though the jumping platform 150 did not be transformed to a component of the conventional elevator system after the building construction is completed, the cost is low for the constructor of the building. In addition, the jumping platform 150 can be reused in a different jumping elevator system for manufacturers of jumping elevator.
Still referring to
Due to the fact that the jumping platform 150 is lightweight (because the elevator machine room is not provided on the jumping platform 150) and the jumping platform 150 and the elevator car 110 are lifted separately, the lifting power requirement for the lifting assembly is greatly reduced, which favors to simplify the structural design of the lifting assembly and saving the construction cost of a building.
It will be appreciated that, prior to lifting the elevator car 110, the lifting assembly may be reloaded on the elevator car 110 from the jumping platform 150; specifically, the hoist 172 is removably mounted on the jumping platform 150 or the elevator car 110, and the hoisting member 171 (e.g., a rope) may extend from the hoist 172, wrap though the diverting pulley 174, and extend onto the jumping platform 150 or the elevator car 110; in such, it is easy to reload the hoist 172 and the hoisting member 171 between the jumping platform 150 and the elevator car 110. Specifically, one end of the suspension beam 173 can be hinged and fixed to the landing 920N, the other end of the suspension beam 173 is in lap joint with the hoistway 910, thereby the dismounting of the lifting assembly relative to the landing 920 is easy, and the workload of the jumping operation is reduced.
In view that the power requirement on the hoist 172 are greatly reduced, the hoist 172 can be selectively implemented by a cable climber, which is low in cost and small in volume.
It should be noted that a fixing member (e.g., suspension, safety clamp, etc.) may be provided on the corresponding elevator car 110. The elevator car 110 can be fixed to the guide rail 930 by the fixing member during lifting of the jumping platform 150, thus free lifting of the jumping platform 150 is unaffected from the elevator car 110.
Referring to
In an embodiment, the temporary working platform 160 is positioned and mounted on a landing 920 (e.g., landing 920N+2) corresponding to a first height by a first uprights 169. After completing the work of preliminary positioning and installing for the guide rail 930b, the temporary working platform 160 can be removed from the landing 920N+2 and continue to be applied during the next jumping operation. The temporary working platform 160 can be realized by a simple steel structure frame, is low in manufacturing cost and can be shared by a plurality of jumping elevator systems 10 in a plurality of hoistways 910, so that the construction cost of a building can be reduced. Also, in conjunction with the following example illustration of the jumping method, it will be appreciated that the temporary working platform 160 will be highly advantageous to avoid the use of scaffolding in the hoistway 910 to position and mount a newly extending rail 930b.
Referring to
In other embodiment, the top diverting sheave 145 as shown in
Based on the above teachings of the arrangements of pulley assemblies of
Firstly, in step S310, referring to
In step S320, the temporary working platform 160 is positioned and mounted on a landing (e.g., landing 920N+2) corresponding to the first height via the first upright 169, such that the worker 90 can conveniently enter from the landing 920N+2 onto the temporary working platform 160 and operate in the hoistway 910.
In step S330, referring to
In step S340, the temporary working platform 160 is removed from the landing 920N+2, that is, removing the temporary working platform 160 from a position of the hoistway 910 corresponding to the first height, thereby unaffecting subsequent lifting operations.
In step S350, referring to
In step S360, referring to
In step S370, referring to
In step S370, the worker 90 can stand on top of the elevator car 110 for performing mounting operation of such as the guide rail bracket 931, and the hoisting member 171 of the lifting assembly and the rope 141 of the pulley assembly can provide a good safety guarantee for the lifting process of the elevator car 110; the mounting of guide rail 930b is reinforced sectionally during progressive lifting of the elevator car 110, thereby providing guide rail segments with enough safety for the elevator car 110 in the subsequent lifting process. By way of example, through this step S370, not only is the guide rails 930b below the landing 920N+2 positioned and mounted well, the elevator car 110 is also lifted relative to the counterweight 120, for example, lifted to the landing 920N+1.
It should be noted that the “lifting process of the elevator car 110” in this step S370 can include multiple sub-processes of sectionally lifting the elevator car 110, and the lifting of the elevator car 110 and the operation of reinforcing the mounting of the guide rail 930 can be performed at the same time. In an embodiment, after each of the guide rail 930b is reinforced well by the worker 90 on the elevator car 110, the lifting assembly may be controlled to lift the elevator car 110 with a distance along the well-reinforced guide rail 930b.
In step S380, referring to
Thereto, the jumping process of the jumping elevator system 10 is substantially completed. It will be understood that the above jumping process can be repeated, and the embodiment of the jumping elevator system 20 shown in
The jumping method of the above embodiment especially have one or more of the following advantages:
(1) Scaffolding in the hoistway 910 for positioning and mounting the guide rails 930b is not required during the entire jumping process, so that the jumping operation becomes simple, efficient and low-cost;
(2) the worker 90 can perform operation of reinforcing the mounting of the guide rail 930b on the top of the elevator car 110, so that the mounting of the guide rail can be reinforced sectionally while the elevator car 110 is progressively lifted relative to the counterweight 120, and the safety of the worker 90 is good;
(3) the same lifting assembly can be used for separately completing lifting operations for the jumping platform 150 and the elevator car 110, and the lifting assembly can be realized at low cost;
(4) for the well-built hoistway 910, the height at which the jumping platform 150 and the elevator car 110 are able to jump is high, for instance, the jumping platform 150 can jump even to the highest landing of the hoistway 910 and the elevator car 110 can jump even to the second-highest landing of the hoistway 910.
It will be appreciated, in connection with the above jumping methods, that embodiment of the jumping elevator system of the present invention have one or more of the following advantages:
(a) the jumping platform 150 and the elevator car 110 can be separately jumped, so that the worker 90 can safely perform operations of positioning and mounting the guide rail 930b at the top of the elevator car 110, thus the mounting of guide rail can be reinforced sectionally while the elevator car 110 is progressively lifted relative to the counterweight 120, and there is no need to use scaffolding in the hoistway 910 for positioning and mounting rails 930b in cooperate with the use of the temporary working platform 160;
(b) the elevator machine room 130 can be flexibly arranged on the outside of the hoistway 910, and its temporary mounting and dismounting are convenient, and it can avoid severe environments (such as severe environments in extreme weather) in hoistway 910 not constructed well, thereby guaranteeing the reliability and safety of the elevator machine room 130;
(c) the lifting assembly, the jumping platform 150 and the like can be realized at low cost, so that the cost of the jumping elevator system 10 can be greatly reduced;
(d) for the well-built hoistway 910, the height at which the jumping platform 150 and the elevator car 110 are able to jump is high, for instance, the jumping platform 150 can jump even to the highest landing of the hoistway 910 and the elevator car 110 can jump even to the second-highest landing of the hoistway 910; moreover, since no elevator machine room is provided in the pit of the hoistway 910, the elevator car 110 can travel to the lowest landing of the hoistway, thus during construction process of a building, the range of travel-able landings for the elevator car 110 is large, and the conveying of workers and/or materials can be achieved between more landings.
The above examples mainly illustrate the embodiments of the jumping elevator system and the jumping method of the present invention. Although only some of the embodiments of the present invention have been described, those ordinarily skilled in the art shall understand that that the present invention can be implemented in many other forms without departing from its principle and scope. Therefore, the examples and implementations described are regarded as illustrative rather than restrictive, and the present invention may cover various modifications and substitutions as long as they do not depart from the spirit and scope of the present invention as defined by the appended claims.
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