Patent Application
20130294828
The present invention generally relates to an automatic releaser for impact test of safety belt, falling protector, safety net, and differential speed sensor, or for other occasions such as weight release and so on.
There is a securing appliance designed for operating personnel working at heights that prevents falling down thereof, such as safety belt, differential speed sensor, and buffering package and so on. The operating personnel working at heights is likely to fall down suddenly resulting in serious consequences, in the situation, the securing appliance plays a great role. However, the casualty accidents of operating personnel even use of securing appliance is still happening. Therefore, the use of qualified securing appliance is the vital prevention of falling down. Suddenly falling of the operating personnel from a height can generate great impact, which hence requires shock resistance test for the securing appliances.
The performance of shock resistance test for securing appliance can be evaluated by utilizing with a releaser. Hanging a weight simulating the operating personnel at heights beneath the releaser, while testing, and hanging the releaser and the securing appliance worn by the personnel on a structure at heights, then the weight will fall once the releaser is released. In this situation, a qualified securing appliance can timely enable self-locking to prevent further falling down of the weight, and an unqualified securing appliance contrarily may fracture itself whereby not bearing the impact force, in turn causing the weight falling in the ground.
The releaser now equipped in the test, however, is generally a wired releaser in that the releaser hanging at heights is even attached with a long power cable which brings about great trouble even safety risk in the testing. In addition, the power cable chronically being exposed to outdoor can be prone to aging, for example, easily being frozen in winter, which is harmful for the power cable itself. There is a need, therefore, for seeking a reasonable and safe releaser for testing.
The proposed invention implies to addresses or alleviates the above-described problems as well as others, by providing for an automatic releaser with wireless controls and its reasonable and novelty configuration.
Automatic releaser with wireless controls, comprising a housing, rechargeable batteries, wireless controls, an electromagnetic mechanism, and a release mechanism, which is characterized in that
The housing is provided with a cylindrical configuration having a upper cavity and a coaxially lower cavity therewith, wherein said upper cavity is communicated with the lower cavity through a center hole, a top cover and a bottom cover are disposed at the top and bottom portions of the housing respectively, an upper hanging ring is fixed into the central portion of the top cover, the rechargeable batteries are arranged within the upper cavity.
The wireless controls includes a remote control, a control switch, antennas, and a wireless control module, wherein the control switch and the antennas are arranged into the top cover, the wireless control module is disposed within the upper cavity;
The electromagnetic mechanism includes an electromagnet and an iron core, wherein the electromagnet is arranged into the central portion of the cavity, the iron core is disposed within the electromagnet;
The release mechanism includes a release pin, a movable sleeve and a release sleeve sequentially suited to one another from inside to outside, wherein the release sleeve, of which top portion being connected with the iron core and on which lateral wall two radial thru holes all in same size being arranged nearby the bottom cover, as well as on which outer wall an upper and a lower semicircle grooves being formed, are arranged within the lower cavity, wherein the upper semicircle groove passes through the thru hole in its diameter direction, and the lower semicircle groove passes through the lower thru hole in its diameter direction, a plurality of rubber rings are embedded within said two semicircle grooves respectively;
The movable sleeve, on which lateral wall a pair of conical bores being symmetrically formed, is arranged within the release sleeve, wherein the external diameter of the conical bore adjacent to the release sleeve is same as the thru holes and the internal diameter is smaller than the external diameter, a steel ball of which diameter being smaller than the said inner side and bigger than the wall thickness of the movable sleeve is disposed within each conical bore;
the release pin, at outer lateral of which a pair of semicircular grooves being symmetrically formed and of which lower end being connected with a lower hanging ring, is penetrated into the movable sleeve through a release hole of the bottom cover, wherein the section radius of the semicircular groove equals to the steel balls.
1) The wireless Controls
The wireless controls consists of a remote control, a control switch, antennas, and a wireless control module, wherein the remote control is configured to control the testing procedure within the range of 500 meters thereby eliminating the inconvenience used with the supply power line to the test and improving the safety distance coefficient for the testing personnel.
2) The Design For the Conical Bore of Movable Sleeve
The thru holes of movable sleeve is applied with a configuration of alternative sizes at both ends that can prevent the steel ball falling outwards from the movable sleeve, wherein the ball will move forwards to the thru hole as which central axis coincides with the conical borehole thereof, thereby reaching of releasing the release pin.
3) The Design For Peripheral Rubber Ring of the Thru Hole of Release Sleeve
The steel ball contacts with the peripheral rubber ring of the thru hole of the release sleeve while rolling forwards to it, then trends to move forwards to the movable sleeve under the action of the elastic force of the ring, wherein the ball will move forwards to the conical bore of movable sleeve as which central axis coincides with the thru hole of release sleeve thereof once again, thereby reaching of locking the release pin.
As a further preferred embodiment of the present invention, wherein the diameter of the upper cavity is larger than the lower cavity.
As a further preferred embodiment of the present invention, wherein a LED display lamp is further arranged onto the top cover for indicating the operating condition of said disclosed automatic releaser with wireless controls.
As a further preferred embodiment of the present invention, wherein a battery charging connector is further arranged onto the top cover for facilitating of recharging the rechargeable batteries.
As a further preferred embodiment of the present invention, wherein an inner liner is arranged within the upper cavity, the plurality of rechargeable batteries are uniformly arranged within the inner liner along its circumferential direction, the wireless control module is arranged above the rechargeable battery and electromagnet for compact configuration of the embodiment of the present invention.
As a further preferred embodiment of the present invention, wherein a securing pin is disposed at the lower cavity adjacent to the upper cavity, the securing pin is mated with the lateral wall of lower cavity in screw joint and formed a mechanical linkage with the top portion of the release sleeve. In order to prevent actuation of the release mechanism caused by the incorrect manipulation as the automatic releaser of the invention is in standby mode, especially with work below its position, it is recommended that screwing the securing pin tightened to form a lock configuration with the top portion of release sleeve ensures safety that the release sleeve should never drop down even if the electromagnet is energized.
As a further preferred embodiment of the present invention, wherein the top portion of the release sleeve is connected with the iron core by a connecting pin that is inserted into an elongated pin hole of the iron core. In said structure, there should be a period of uplink idle stroke for the iron core being on startup, as which accelerates to uplink, the connecting pin coincides and contacts with the bottom portion of pin hole. At this time, the iron core generates an impact force on the release sleeve thereby easily elevating the release sleeve.
As a further preferred embodiment of the present invention, wherein the inner wall between the upper and lower thru hole of the release sleeve possesses with a certain taper degree which can decomposes the contact pressure generated by the steel ball contacting with the inner wall of the release sleeve of an upward force and an decomposed pressure, thereby reducing the electromagnetic attracting force while the release mechanism being released, thus availing of being more conducive to releasing the release sleeve.
The above described features and advantages, as well as others, will become more readily apparent to those skilled in the art by reference to the following detailed description and its accompanying drawings. While it would be desirable to provide an automatic releaser that provides one or more of the above mentioned advantageous features, or other advantages as may be apparent to those reviewing this disclosure, the teachings disclosed herein extend to those embodiments which fall within the scope of the appended claims, regardless of whether they accomplish one or more of the aforementioned features or advantages.
With reference now to
The mentioned metal housing 8 is provided with a cylindrical configuration having a upper cavity 801 and a coaxially lower cavity 802 therewith, wherein the diameter of the upper cavity 801 is larger than the lower cavity 802, said upper cavity 801 is communicated with the lower cavity 802 through a center hole 803. A top cover 2 and a bottom cover 12 are disposed at the top and bottom portions of the housing 8 respectively.
An upper hanging ring 1 is fixed into the central portion of the top cover 2 for connection with weights. A release hole 1201, into which the release pin may be penetrated, is formed in the central portion of the bottom cover 12. A LED display lamp 17, a battery charging connector 18, the control switch 19 and the wireless control antennas 21 are arranged into the top cover 2.
An inner liner 7, an electromagnet 4, the rechargeable batteries 5, the wireless control module 3 are arranged within the upper cavity 801. The release mechanism is disposed within the lower cavity 802.
Both the inner liner 7 being tightly attached within the upper cavity 801 with the plurality of rechargeable batteries 5 being uniformly arranged within the inner liner 7 along its circumferential direction and the electromagnet 4 being arranged into the central portion of the cavity 801 are cooperated to provide power supply for the normal function of the automatic releaser.
The wireless control module 3 is arranged above the rechargeable batteries 5 and the electromagnet 4 that further being electrically connected with the wireless control antennas 21 within the top cover 2 for commonly accomplishing the wireless control to the releaser.
The iron core 6 being vertically disposed within the internal centre of the electromagnet 4 can implement the up-and-down motion under the action of the magnetic field.
With reference now to
With reference to
The movable sleeve 10, on which lateral wall a pair of conical bores 1001 being symmetrically formed, is arranged within the release sleeve 9, wherein the external diameter of the conical bore 1001 adjacent to the release sleeve 9 is same as the thru holes 901, 904 and the internal diameter is smaller than the external diameter. A steel ball 11 of which diameter being smaller than the said inner side and bigger than the wall thickness of the movable sleeve 10 is disposed within each conical bore 1001. The wall thickness of the movable sleeve 10 approximately equals to half of the diameter of the ball 11 of which half portion thus being disposed out of the conical bore 1001. The conical bore 1001 is applied with a configuration of alternative sizes at both ends that can trend the ball 11 to move forwards to movable sleeve 9, then prevent the steel ball falling outwards from the conical bore 1001.
The release pin 13, at outer lateral of which a pair of semicircular grooves 1301 being symmetrically formed and of which lower end being connected with a lower hanging ring 16, can be penetrated into or taken out of the movable sleeve 10 through the release hole 1201 of the bottom cover 12, wherein the section radius of the semicircular groove 1301 is same as the steel balls 11, the release pin 13 can complement up-and-down sliding movement within the movable sleeve 10.
Now with reference to
1) Penetrating the release pin 13 into the movable sleeve 10 through the release hole 1201 of the bottom cover 12, the steel ball 11 motivated by the release pin 13 contacting with the outer portion of the ball 11 nearby the removable sleeve 10 will move upwards, thereby promoting the upwards sliding movement of the removable sleeve 10;
2) The ball 11 initially extruded by the conical bore 1001 will successfully rolling forwards into the upper thru hole 901 of the release sleeve 9 as which central axis coincides with the top conical bore 901 thereof;
3) Without the resistance of the ball 11, the release pin 13 then can be inserted into the top portion of the removable sleeve 10 as which central axis of taper hole 1001, and the upper thru hole 901, as well as the semicircular groove 1301 are coincided with each other.
4) The steel ball 11 then contacts with the peripheral rubber ring 903 of the upper thru hole 901 of the release sleeve 9 thereby rolling forwards to the taper hole 1001 and the semicircular groove 1301;
5) Pulling the lower hanging ring 16 on the release pin 13 downwards, as illustrated in
6) Hanging the upper hanging ring 1 in the top cover 2 of the automatic releaser of the invention onto a structure at heights;
7) Hanging weights onto the lower hanging ring 13 in the bottom cover 12;
8) Pressing the control switch button 19 in the top cover 2 to initiate the controls.
9) Pressing the remote control button to energize the electromagnet 4 generating the magnetic field;
10) The iron core 6 within the upper cavity moving upwards under the action of the magnetic field, thereby motivating the upward movement of the release sleeve 9 within the lower cavity;
11) As the release sleeve 9 moving up to the upper border while its central axis of lower thru hole 904, and the taper hole 1001 of the removable sleeve, as well as the semicircular groove 1301 of the release pin are coincide with each other, the steel ball 11 rolling downwards to the lower thru hole of the release sleeve by the pressure of the taper hole 1001;
12) The release pin 12 falling down until the resistance that the ball 11 applies on the release pin 12 once disappeared, thereby reaching the process of releasing the weights.
It will be appreciated that the above-described embodiments are merely illustrative, and that those of ordinary skill in the art may readily devise their own implementations and modifications that incorporate the principles of the present invention and fall within the spirit and scope thereof.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201110195050.6 | Jul 2011 | CN | national |
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/CN2012/075008 | 5/3/2012 | WO | 00 | 7/15/2013 |
