Patent Application
20170137037
The following relates to a plugging and pulling movement based on virtual linear mobile guide rail about sliding-plug door, which belongs to the technical field of the sliding-plug door.
Sliding-plug door is widely used in train doors, cabin doors, aircraft doors, subway doors, car doors and other kinds of transport devices in their compartment doors. At present, the power mechanism of the compartment door can be divided into pneumatic, hydraulic, electric and others. Compartment doors can be categorized according to their movement form such as Sliding-plug door, side by side combination door, revolving door and other different movement forms. In the high-speed train doors, the main form of door is the sliding-plug door. Due to the limitation of space in the body compartment, the transmission mechanism of the door must permit the complete required movement within the limited space. This kind of door needs to complete two movements, one is along the direction of the train i.e. door opening direction and closing direction movements and its form of motion is sliding. The moving distance is slightly larger than the width of the door, about 800-900 mm. In order to meet the urgent situation, human can open the compartment door using backward stroke non self-locking mechanism. Driving mechanism for long distance moving mechanism, such as no self-locking screw mechanism, rack mechanism and flexible transmission (toothed belt transmission), etc. The main driving force is electric power and the transmission form is easy to design and produce. The other movement is perpendicular to the direction of the train and does translation movement, i.e. horizontal plugging and pulling movement. The form of its movement should also be moving, moving distance is smaller, generally is slightly larger than the thickness of the door, about 75 mm. In order to ensure the translational motion of the door, the current mechanism usually used a short guide rails or a swing rod by swing motion to approximately displace it. The movement needs to follow the open motion of the door and it is only in the position which open or close the door making a short movement. This part of the movement is more difficult to design and in order to reduce weight, enhance reliability and reduce cost, the motor power cannot use a single drive motor. Therefore, it often becomes the key difficulty of sliding-plug door. The invention relates to a novel mechanism for improving the difficult part of the traditional plugging and pulling movement. The structure does not have the traditional short guide rail with a small mechanism to achieve the virtual guide rail movement, ensuring that the door always moves at the level of plugging and pulling movement, there is no movement up and down. The virtual guide rail mechanism cancels the short guide rail, and does not have the disadvantage of a small amount of up and down movement by using swing rod motion. It and also has no disadvantage of complex device attached to make up for defects caused by moving up and down. The whole mechanism has the advantages of simple structure, light weight, accurate movement, drive convenient, simple control, lower cost and high reliability.
Objective of the invention: The disadvantages of current sliding-plug door plugging and pulling movement mechanism structure such as short guide rails, complex structure, inconvenient layout and control, approximate translational motion of the swing rod by swing motion and the complex structure of the modified auxiliary device needs to be rectified for easy operation. This invention proposed a virtual mobile guide rail of sliding-plug door plugging and pulling movement mechanism device with simple mechanism, convenient layout design and from the institutional structure to ensure the compartment door can absolutely do translation plugging and pulling movement. This invention has no short guide rail, however the door connection point along the trajectory is equivalent to walking with a guide rail in the same trajectory which is guaranteed by the structure and size of the institution. The inventors therefore call it a novel virtual line moving guide rails sliding-plug door plugging and pulling movement mechanism. The mechanism has the advantages of simple structure, accurate movement, convenient control, low cost and high reliability.
The invention is a key technology of sliding plug door plugging and pulling movement which is the core technology of sliding-plug door. The difficulty of sliding-plug door is the plugging and pulling movement. In order to solve this technical problem, the technical proposal of the invention is achieved in the following ways.
The device comprises of a compartment door, bearing rod slide block with the rod sliding block above arranged on the bearing light bar and the bearing light rod is connected by the sliding pair. Its characteristic lies in the compartment door is connected with the bearing sliding block through the plugging and pulling movement main body and the plugging and pulling movement main body comprises a swing rod, a connecting rod and a roller. The upper end of the connecting rod and compartment door connected to point B by rotation pair and the lower end of the connecting rod and the bearing rod slide block connected to point D by a sliding pair. The upper end of the swing rod and bearing rod slide block connected to point A by rotation pair and B, C, D is located on the same straight line.
In the scheme, the main body mechanism of the plugging and pulling movement is from point A on the upper end of the swing rod to midpoint C on connecting rod. The length of AC is half of the upper end of the connecting rod point B and the lower end of the connecting rod point D of the length of BD.
In the scheme, the upper pulley of the door is fixed on the compartment door and the upper pulley of the compartment door is arranged on the upper pulley track which is fixed on the vehicle body.
In the scheme, the lower end of the compartment door is fixedly provided with a lower guide rail, whiles the lower guide rail and the lower pulley moving side of the door are arranged on the vehicle body connected by sliding pair.
In the scheme, the bearing light rod and nut slider is connected with a mesh, whiles the convex plate is fixed on the bearing light rod and a concave plate is fixed on the nut sliding block. The convex plate and concave plate are connected together.
In the scheme, the nut sliding block is hollow and is provided with a thread and the screw rod connected to the thread. One end of the screw rod is also connected to the motor.
The beneficial effect of the invention is that, compared with the existing sliding-plug door short guide or swing bar technique, the invention avoided short guide rails, changed into a virtual guide rail mechanism which can still achieve a linear translation accurate plugging and pulling movement effect. The whole device has the advantages of simple structure, reduced cost, reduced weight and reliable motion.
Numbers in
A mechanism device based on virtual linear moving guide rail of sliding-plug door plugging and pulling movement. It is made up of double linear guide rail and five-bar mechanisms with virtual restraint. Under normal circumstances, the mechanism degree of freedom is zero and it can't move. However, the mechanism is capable of moving when the length of each rod is at a specific length and at this time the mechanism is virtual restraint. The degree of freedom of the mechanism shall be calculated in accordance with the cancellation of the component and the low pair. At the same time, the degree of freedom of the five-bar mechanisms should be equal to the degree of freedom of the four-bar mechanisms and it can move. With the different requirements of industrial applications, the inventors selected different components and motion pairs as virtual restraint and the re-election of different components as driving parts, the mechanism can have different functions. The invention relates to a double linear guide rail and five-bar mechanisms of one double linear guide rails as a virtual restraint and cancels the linear guide rail (i.e. low pair) with its subsidiary slide block (i.e. component) whiles the remaining four components are retained. Although the linear guide rail (i.e. low pair) and its subsidiary slide block (component) were canceled, due to the special nature of the four-bar mechanisms length which is connected with the slide block, the connection point can still be guaranteed according to the original linear guide trajectory. Although cancel the linear guide rail, but still can walk out of the original linear guide rail track, we call it virtual linear motion guide rails. Connecting point of virtual linear moving guide rail and the driving point of the sliding-plug door are connected by rotation pair. In order to ensure that the sliding-plug door can follow the required linear movement along the guide track and complete the plugging and pulling movement of the door, the other guide rail in the original double guide rails is replaced with a roller form having high pair form with passive degree of freedom. Along with the change of the motion range of the mechanism, the force of the mechanism is also changing. In order to ensure flexibility of the plugging and pulling movement, different components can be used as the driving component in the mechanism so that the door is lighter, more flexible and reliable when making the plugging and pulling movement. The invention of the plugging and pulling movement is without driving power source alone. The power source is from the drive door opening and closing direction (i.e. train forward direction) of screw motion through the door of the curve guide rail forming action and reaction to push on the door which achieve the door plugging and pulling movement. The re-use of the torsion spring force driving the swing rod to rotate in the virtual linear guide rail sliding-plug door plugging and pulling movement mechanism, ensure that the door is always in open state. When the door to needs of the plugging or pulling, used to set in the door frame of bevel mechanism driven original slider guide rail changed to roller forms of high pair, plugging or pulling the door.
As shown in
In addition to the main body mechanism ACBD, this device is supplemented by compartment door (4), bearing rod slide block (5), bearing light rod (6), reverse stroke non-self-locking (i.e. having a large lead) trip screw rod (7) with the screw rod (7) to match the nut slider (8) and the compartment door upper pulley (9), upper pulley guide rail (10), compartment door lower pulley (11) and other components. It is the ACBD mechanism which makes the plugging and pulling movement based on virtual linear mobile guide rail about the sliding-plug door. Point B of the mechanism component (2) is connected to the compartment door (4) by rotation pair B and there is a compartment door upper pulley (9) on the top of compartment door. The compartment door upper pulley (9) is installed on the upper pulley guide rail (10) and the upper pulley guide rail (10) is fixed and installed on the vehicle body. The guide rail on the lower end of compartment door is installed on the door, with the door into a whole. The compartment door lower pulley (11) is installed on the guide rail of the lower end and can move along the low guide rail as shown in
Its drive transmission line: If the door needs to be closed using the controller to control the steering of a motor and running time of the motor,]driven screw rod (7) to rotate, driven a nut slider (8) along the train forward moving direction, driven the bearing rod slide (5) along the bearing rod to move, driven the main body of the plugging or pulling movement ABCD moving as a whole, driven upper pulley of compartment door (9) move along the upper pulley track (10) doing straight line movement, completed movement that the door along the train forward direction (or reverse direction) closed (or open) movement. When the compartment door (4) moved to near the end point position of closed the door. Because the upper pulley (9) of the compartment door enter in the curved section of the upper pulley guide rail (10), by the upper pulley track (10) to the upper pulley of compartment door (9) the counterforce of V direction force, making B point on the compartment door (4) along the direction V complete plugging or pulling movement of closed the door. Due to the characteristics of the mechanism, the invention can always ensure that the B point along the direction that BA is perpendicular to the AD, and make virtual linear guide rail movement. The above is the closing process, first along the forward direction of the train, that is, the upper pulley of compartment door (9) in the upper pulley track (10) doing straight line movement. When the door is closed, the upper pulley of compartment door (9) enters the upper pulley track (10) curved section to complete plugging or pulling movement along the V direction and closed the door.
If you need to open the door, then the process is an opposite process. First, making the curved section plugging or pulling movement of the guide rail to open the door, and then make a straight line movement to open the door. The opposite movement showed in
The drive transmission line: If the door needs to be closed the controller is used to control the steering and running time of the motor. The driven screw rod (7) rotate and drives the nut slider (8) along the train forward moving direction which intern drives the bearing rod slide (5) along the bearing rod to move. This then drives the main body of the plugging or pulling movement ABCD moving as a whole. The driven upper pulley of compartment door (9) also moves along the upper pulley track (10) in a straight line movement and completes the door movement along the train forward direction (closed) or reverse direction (open) movement when the compartment door (4) moved to near the end point position of the closed door. Because the upper pulley (9) of the compartment door enters the curved section of the upper pulley guide rail (10), the force of the upper pulley track (10) to the counterforce of the upper pulley of compartment door (9) is in the V direction. This enables B point on the compartment door (4) along the direction V completes the plugging or pulling movement of closed door. Due to the characteristics of the mechanism, the invention can always ensure that the B point is along the direction that BA is perpendicular to AD and makes virtual linear guide rail movement. The above is the closing process, first along the forward direction of the train, i.e. the upper pulley of compartment door (9) in the upper pulley track (10) doing straight line movement. When the door is closed, the upper pulley of compartment door (9) enters the upper pulley track (10) curved section to complete plugging or pulling movement along the V direction and closed the door.
If you need to open the door, the process is the opposite process. First, make the curved section plugging or pulling movement of the guide rail to open the door and then make a straight line movement to open the door.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201410139017.5 | Apr 2014 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2015/076061 | 4/8/2015 | WO | 00 |
