A reflow device and current collector shoe unhooking device and bogie

Abstract

The application discloses a current collector and current receiver shoe removing device and a bogie, wherein the current collector and the current receiver respectively comprise current collector shoes and current receiver shoes, the shoe removing device comprises a driving mechanism and a force applying mechanism, the force applying mechanism is connected with the current collector shoes and the current receiver shoes, and the driving mechanism is connected with the force applying mechanism and used for driving the force applying mechanism to move the current collector shoes and the current receiver shoes simultaneously, thereby controlling the current receiver and the current collector to remove shoes simultaneously or to restore a current receiving state. The current collector and current receiver shoe removing device and the bogie have the advantages that the driving mechanism and the force applying mechanism are arranged, the force applying mechanism is connected with the current collector shoes and the current receiver shoes, the driving mechanism is connected with the force applying mechanism and used for driving the force applying mechanism to move the current collector shoes and the current receiver shoes simultaneously, thereby controlling the current receiver and the current collector to remove shoes simultaneously or to restore a current receiving state, and the mechanical device is used to realize the simultaneous shoe removing and the current receiving state restoring of the current receiver and the current collector, so that the problems, such as laborious manual operation and the risk of electric shock, of the prior art are solved.

Description

Technical Field

[0001] This application relates to the field of rail transit vehicle technology, and in particular to a return device and a current collector removal device and a bogie. Background Technology

[0002] Currently, some urban rail vehicles, such as rubber-tired subway trains, require the installation of current collectors and return devices. (See attached image) Figure 1 The image shown is a bottom view of the installation positions of the return current device 12 and the current collector 13 on the bogie of a certain subway vehicle. The two current collectors 13 are installed on both sides of the middle of the frame, and the two return current devices 12 are on the lower side of the middle of the frame.

[0003] When a vehicle is parked or needs to be towed due to a breakdown, the current collector and return rail need to be unshoeed for safety reasons. Therefore, how to achieve this unshoeing is crucial. Currently, the current collector is unshoeed and released manually by pulling a rope, while the return rail is unshoeed and released manually by engaging and disengaging a hook lock to restore current collection. However, since the return rail is installed at the bottom of the frame, directly above the return rail, the operation is very inconvenient. Furthermore, each bogie has two current collectors and two return rails, resulting in numerous operations, high manual labor costs, and the conductive nature of the current collector rail poses a safety hazard.

[0004] How to easily separate the current receiver and return receiver is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the purpose of this invention is to provide a return current receiver and return current receiver shoe removal device and bogie that can easily realize the shoe removal of the return current receiver and return current receiver.

[0006] The technical solution provided by this invention is as follows:

[0007] A boot removal device for a return flow device and a current receiver, wherein the return flow device and the current receiver each include a return flow shoe and a current receiver shoe, and the boot removal device includes a driving mechanism and a force application mechanism. The force application mechanism is connected to the return flow shoe and the current receiver shoe, and the driving mechanism is connected to the force application mechanism. The driving mechanism is used to drive the force application mechanism to move the return flow shoe and the current receiver shoe simultaneously, thereby controlling the current receiver and the return flow device to simultaneously remove the boots or restore the current receiving state.

[0008] Preferably, the driving mechanism includes a motor, a lead screw, a left-hand nut seat, and a right-hand nut seat. The motor is connected to the lead screw, which has left-hand and right-hand threads. The left-hand and right-hand nut seats respectively engage with the left-hand and right-hand threads on the lead screw and are connected to a force-applying mechanism. The motor rotates to drive the lead screw to rotate, which in turn moves the left-hand and right-hand nut seats. Thus, the force-applying mechanism enables the current collector and the return device to simultaneously dismount.

[0009] Preferably, the threads of the lead screw, left-hand nut seat, and right-hand nut seat have a small lead, so that the left-hand nut seat and the right-hand nut seat have a self-locking function.

[0010] Preferably, the drive mechanism further includes a guide rod parallel to the lead screw and in clearance fit with the left-hand nut seat and the right-hand nut seat, so that the left-hand nut seat and the right-hand nut seat can only move in a straight line along the guide rod, thereby preventing the left-hand nut seat and the right-hand nut seat from rotating.

[0011] Preferably, both the lead screw and the guide rod are fixed at one end and movable at the other end.

[0012] Preferably, the return flow device and the current receiver are respectively provided with a reset mechanism to reset the return flow shoe and the current receiver shoe. When the force application mechanism releases the return flow shoe and the current receiver shoe, the return flow shoe and the current receiver shoe return to their original positions under the action of the reset mechanism, and the current receiver and the return flow device return to the current receiving state.

[0013] Preferably, the force-applying mechanism consists of four pull ropes, each connecting a left-hand nut seat to its corresponding return shoe and current-collecting shoe, and a right-hand nut seat to its corresponding return shoe and current-collecting shoe. When the motor rotates forward / reverse, the left-hand and right-hand nut seats move closer to each other, tightening the pull ropes and causing the current-collecting and return shoes to overcome the reset mechanism and disengage from the current-collecting and return rails, thus simultaneously disengaging the current collector and return device. When the motor rotates in reverse / forward, the left-hand and right-hand nut seats move further away from each other, loosening the pull ropes. Under the action of the reset mechanism, the current-collecting and return shoes return to their original positions, contacting the current-collecting and return rails, thus simultaneously receiving current from the current collector and return device.

[0014] Preferably, it further includes a first limit switch and a second limit switch to limit the displacement of the left-hand or right-hand nut seat so that the current receiver and the return receiver are in the current receiving state and the bootless state, respectively.

[0015] Preferably, the system further includes a control mechanism, which comprises a forward control contactor, a reverse control contactor, a stop button, a forward start button, and a reverse start button. The forward and reverse control contactors are used to control the forward and reverse rotation of the motor, respectively, and are interlocked. The stop button is a normally closed button on the main circuit and is used to stop the motor. The forward and reverse start buttons are used to start the motor, respectively. When the left-hand or right-hand nut seat contacts the second limit switch, the forward control contactor coil de-energizes and the contacts jump, causing the motor to rotate only in reverse and not forward. When the left-hand or right-hand nut seat contacts the first limit switch, the reverse control contactor coil de-energizes and the contacts jump, causing the motor to rotate only in forward and not in reverse.

[0016] A bogie includes a frame, two current collectors and two return current collectors mounted on the frame, and a boot removal device connecting the two current collectors and the two return current collectors, wherein the boot removal device is as described above.

[0017] Compared to existing technologies, the present invention provides a return and current receiver unshoeing device and bogie. By setting up a driving mechanism and a force-applying mechanism, the force-applying mechanism is connected to the return shoe and the current receiver shoe, and the driving mechanism is connected to the force-applying mechanism. This mechanism drives the force-applying mechanism to move the return shoe and the current receiver shoe simultaneously, controlling the current receiver and the return device to unshoe simultaneously or return to the current receiving state. Thus, the simultaneous unshoeing and return of the current receiver and the return device are achieved through a mechanical device, solving the problems of existing solutions that rely on manual operation, are laborious, and pose a risk of electric shock. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A bottom view of an existing bogie;

[0020] Figure 2 This is a bottom view of the bogie according to an embodiment of the present invention;

[0021] Figure 3 for Figure 2 A schematic diagram of the bogie's boot removal device is shown.

[0022] Figure 4 for Figure 3 A schematic diagram showing the connection between the pull rope and the current collector in the boot removal device;

[0023] Figure 5 for Figure 3 A schematic diagram showing the connection between the pull rope and the return valve in the boot removal device;

[0024] Figure 6 for Figure 3 The diagram shows the control circuit of the boot removal device.

[0025] Reference numerals: 1-Motor, 2-Support fixed end, 3-First limit switch, 4-Second limit switch, 5-Guide rod, 6-Support moving end, 7-Pull rope, 8-Socket wrench interface, 9-Right-hand nut seat, 10-Left-hand nut seat, 11-Leading screw, 12-Return valve, 13-Current collector, 14-Wheelset, 15-Guide wheel, 16-Frame, 17-Current collector shoe, 18-Spring, 19-Return valve shoe; L1, L2, L3-380V three-phase line, Q S1 - Main circuit air switch, FU1 - Main circuit fuse, FU2 - Control circuit fuse, KM1 - Forward control contactor, KM2 - Reverse control contactor, FR - Thermal relay (monitors motor current, trips if current is too high, provides overheat protection), M - Three-phase motor, PE - Grounding wire, SB1 - Stop button, SB2 - Forward start button, SB3 - Reverse start button, SQA - First limit switch, SQB - Second limit switch. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0028] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0030] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0031] like Figures 2 to 6 As shown, an embodiment of the present invention provides a bogie, including a frame 16, wheelsets 14 mounted on the frame 16, guide wheels 15, two return shoes 12 and two current receivers 13, and a shoe removal device connecting the two return shoes 12 and the two current receivers 13. The return shoes 12 and the current receivers 13 respectively include a return shoe 19 and a current receiver 17.

[0032] In this embodiment, the boot removal device includes a driving mechanism and a force-applying mechanism. The force-applying mechanism is connected to the return boot 19 and the receiving boot 17. The driving mechanism is connected to the force-applying mechanism and is used to drive the force-applying mechanism to simultaneously move the return boot 19 and the receiving boot 17, thereby controlling the return device 12 and the receiving device 13 to simultaneously remove their boots or resume their receiving state.

[0033] In this embodiment, the driving mechanism includes a motor 1, a lead screw 11, a left-hand nut seat 10, and a right-hand nut seat 9. The lead screw 11 has left-hand threads and right-hand threads corresponding to the left-hand nut seat 10 and the right-hand nut seat 9, respectively. The motor 1 is connected to the lead screw 11. The left-hand nut seat 10 and the right-hand nut seat 9 are respectively engaged with the left-hand threads and right-hand threads on the lead screw 11 and are connected to a force-applying mechanism. The rotation of the motor 1 drives the lead screw 11 to rotate, which in turn moves the left-hand nut seat 10 and the right-hand nut seat 9. This, in turn, enables the return shoe 12 and the current receiver 13 to simultaneously dismount through the force-applying mechanism. Of course, in other embodiments, the driving mechanism can also adopt other structures besides the motor and the lead screw, as long as it can drive the force-applying mechanism to move the return shoe 19 and the current receiver 17 simultaneously.

[0034] In this embodiment, the threads of the lead screw 11, the left-hand nut seat 10, and the right-hand nut seat 9 adopt a small lead, so that the left-hand nut seat 10 and the right-hand nut seat 9 have a self-locking function. That is, the lead screw 11 can drive the nut seat to move, but the nut seat cannot drive the lead screw 11 to rotate. Therefore, there is no need to add a locking mechanism to maintain stability.

[0035] In this embodiment, the driving mechanism also includes a guide rod 5 that is parallel to the lead screw 11 and has a clearance fit with the left-hand nut seat 10 and the right-hand nut seat 9, so that the left-hand nut seat 10 and the right-hand nut seat 9 can only move in a straight line along the guide rod 5, so as to prevent the left-hand nut seat 10 and the right-hand nut seat 9 from rotating.

[0036] In this embodiment, both the lead screw 11 and the guide rod 5 are fixed at one end to the fixed end 2 of the support, and the other end is movable (the movable end of the lead screw 11 has a socket wrench interface for easy insertion of the socket wrench during installation). In this way, the lead screw 11 will not be stuck due to changes in ambient temperature or deformation of the frame under load.

[0037] In this embodiment, the current receiver 13 and the current return device 12 are respectively provided with reset mechanisms to reset the current receiving shoe 17 and the current return shoe 19. When the force application mechanism releases the current return shoe 19 and the current receiving shoe 17, the current receiving shoe 19 and the current return shoe 17 return to their original positions under the action of the reset mechanism, and the current return device 12 and the current receiver 13 return to the current receiving state. In this embodiment, the reset mechanism is a spring 18, but other structures are also possible.

[0038] In this embodiment, the force-applying mechanism consists of four pull ropes 7, which are respectively connected to the left-hand nut seat 10 and its corresponding return shoe 19 and current receiving shoe 17, and the right-hand nut seat 9 and its corresponding return shoe 19 and current receiving shoe 17. When the motor 1 rotates forward / reverse, the left-hand nut seat 10 and the right-hand nut seat 9 move towards each other, tightening the pull ropes 7. This causes the current receiving shoe 17 and the return shoe 19 to overcome the reset mechanism and disengage from the current receiving rail and the return rail, thus enabling the return device 12 and the current receiver 13 to disengage simultaneously. When the motor 1 rotates in reverse / forward, the left-hand nut seat 10 and the right-hand nut seat 9 move away from each other, loosening the pull ropes 7. Under the action of the reset mechanism, the current receiving shoe 17 and the return shoe 19 return to their original positions and contact the current receiving rail and the return rail, thus enabling the return device 12 and the current receiver 13 to receive current simultaneously.

[0039] In this embodiment, the boot removal device further includes a first limit switch 3 and a second limit switch 4 to limit the displacement of the left-hand nut seat 10, so that the return valve 12 and the current receiver 13 are in the current receiving state and the boot removal state, respectively (in this embodiment, the limiting is achieved by the part of the left-hand nut seat 10 that cooperates with the guide rod 5 contacting the first limit switch 3 or the second limit switch 4). In other embodiments, the displacement of the right-hand nut seat 9 can also be limited.

[0040] The exercise method is:

[0041] During operation, when motor 1 rotates forward, it drives the left-hand nut seat 10 and the right-hand nut seat 9 to move closer to each other along the guide rod 5. The pull rope 7 connected to the nut seat is tightened, which drives the current receiving shoe 17 of current receiving device 13 and the return shoe 19 of return device 12 to move. Current receiving device 13 and return device 12 dismount from their shoes. When current receiving device 13 and return device 12 dismount from their shoes, spring 18 is compressed.

[0042] When motor 1 reverses, it drives the left-hand nut seat 10 and the right-hand nut seat 9 to move away from each other along the guide rod 5. The pull rope 7 connected to the nut seat is released. Due to the elastic force of the spring 18, the current receiving shoe 17 of the current receiver 13 and the return shoe 19 of the return receiver 12 return to their original positions, and the current receiver 13 and the return receiver 12 resume working.

[0043] In this embodiment, the boot removal device also includes a control mechanism to facilitate remote operation by the driver in the train driver's cab, allowing for remote control of the motor's rotation direction and avoiding the risk of electric shock from the third rail current. Figure 6 As shown, in this embodiment, the control mechanism mainly includes a forward rotation control contactor KM1, a reverse rotation control contactor KM2, a stop button SB1, a forward rotation start button SB2, and a reverse rotation start button SB3. The three-phase motor M is connected to 380V three-phase lines L1, L2, and L3. The forward rotation control contactor KM1 and the reverse rotation control contactor KM2 are used to control the forward and reverse rotation of the three-phase motor M, respectively, and are interlocked. The stop button SB1, as a normally closed button on the main circuit, is used to stop the operation of the three-phase motor M. The forward rotation start button SB2 and the reverse rotation start button SB3 are the forward and reverse rotation start buttons, respectively, used to start the three-phase motor M. When the left-hand nut seat 10 contacts the second limit switch SQB, the forward rotation control contactor coil de-energizes and the contact jumps, causing the three-phase motor M to only rotate in reverse and not in the forward direction; when the left-hand nut seat 10 contacts the first limit switch SQA, the reverse rotation control contactor coil de-energizes and the contact jumps, causing the three-phase motor M to only rotate in the forward direction and not in the reverse direction.

[0044] A main circuit air switch QS1 and a main circuit fuse FU1 are connected in series between the 380V three-phase lines L1, L2, and L3 and the three-phase motor M. Forward control contactor KM1 and reverse control contactor KM2 are connected in parallel and in series between the main circuit fuse FU1 and the three-phase motor M. The three-phase motor M is grounded through the grounding wire PE. The control circuit includes a control circuit fuse FU2, a thermal relay FR, a stop button SB1, a forward start button SB2, a reverse start button SB3, a first limit switch SQA, and a second limit switch SQB. The thermal relay FR monitors the motor current; it trips when the current is too high, providing overheat protection. The control circuit fuse FU2, thermal relay FR, and stop button SB1 are connected in series. The forward start button SB2 is connected in series with the first limit switch SQA, and the reverse start button SB3 is connected in series with the second limit switch SQB; both are connected in parallel to the control circuit.

[0045] The circuit control method is as follows: The driver can drive the motor to rotate via electronic control (stop button SB1, forward start button SB2, reverse start button SB3) from the driver's cab, which in turn drives a lead screw 11 with two threads (left-hand thread and right-hand thread) to rotate. The lead screw 11 is connected to a left-hand nut seat 10 via a left-hand thread and to a right-hand nut seat 9 via a right-hand thread. Two pull ropes 7 extend from the left-hand nut seat 10 and the right-hand nut seat 9, respectively, and are connected to two current collectors 13 and current return devices 12 on both sides. When the motor 1 rotates forward or reverse, it can drive the left-hand nut seat 10 and the right-hand nut seat 9 to move towards or away from each other in two directions, while simultaneously driving the pull ropes 7 to tighten the current return devices 12 and current collectors 13 to remove them from their boots, or to loosen the current return devices 12 and current collectors 13 to return them to their original positions.

[0046] The execution logic table is shown below:

[0047] KM1 Reset Contact jump Maintain in place KM2 Reset Maintain in place Contact jump result Motor stopped Motor rotates forward Motor reverse

[0048] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A shoe removal device for a return flow device and a current receiver, wherein the return flow device and the current receiver respectively include a return flow shoe and a current receiver shoe, characterized in that, The boot removal device includes a driving mechanism and a force application mechanism. The force application mechanism is connected to the return boot and the receiving boot. The driving mechanism is connected to the force application mechanism and is used to drive the force application mechanism to move the return boot and the receiving boot simultaneously, thereby controlling the receiving device and the return device to remove the boot or restore the receiving state at the same time. The driving mechanism includes a motor, a lead screw, a left-hand nut seat, and a right-hand nut seat. The motor is connected to the lead screw, which has left-hand and right-hand threads. The left-hand and right-hand nut seats respectively engage with the left-hand and right-hand threads on the lead screw and are connected to a force-applying mechanism. The motor rotates to drive the lead screw to rotate, which in turn moves the left-hand and right-hand nut seats. The force-applying mechanism then enables the current collector and return device to simultaneously dismount.

2. The boot removal device as described in claim 1, characterized in that, The threads of the lead screw, left-hand nut seat, and right-hand nut seat adopt a small lead, which enables the left-hand nut seat and right-hand nut seat to have a self-locking function.

3. The boot removal device as described in claim 1, characterized in that, The drive mechanism also includes a guide rod parallel to the lead screw and in clearance fit with the left-hand nut seat and the right-hand nut seat, so that the left-hand nut seat and the right-hand nut seat can only move in a straight line along the guide rod, thereby preventing the left-hand nut seat and the right-hand nut seat from rotating.

4. The boot removal device as described in claim 3, characterized in that, Both the lead screw and the guide rod are fixed at one end and movable at the other.

5. The boot removal device as described in claim 1, characterized in that, The return flow device and the current receiver are respectively provided with a reset mechanism to reset the return flow shoe and the current receiver shoe. When the force application mechanism releases the return flow shoe and the current receiver shoe, the return flow shoe and the current receiver shoe return to their original positions under the action of the reset mechanism, and the current receiver and the return flow device return to the current receiving state.

6. The boot removal device as described in claim 5, characterized in that, The force-applying mechanism consists of four pull ropes, each connecting a left-hand nut seat to its corresponding return shoe and current-collecting shoe, and a right-hand nut seat to its corresponding return shoe and current-collecting shoe. When the motor rotates forward / reverse, the left-hand and right-hand nut seats move closer to each other, tightening the pull ropes and causing the current-collecting and return shoes to overcome the reset mechanism and disengage from the current-collecting and return rails, thus simultaneously disengaging the current collector and return device. When the motor rotates in reverse / forward, the left-hand and right-hand nut seats move further away from each other, loosening the pull ropes. Under the action of the reset mechanism, the current-collecting and return shoes return to their original positions, contacting the current-collecting and return rails, thus simultaneously receiving current from the current collector and return device.

7. The boot removal device as described in claim 1, characterized in that, It also includes a first limit switch and a second limit switch that limit the displacement of the left-hand or right-hand nut seat so that the current receiver and the return receiver are in the current receiving state and the bootless state, respectively.

8. The boot removal device as described in claim 7, characterized in that, It also includes a control mechanism, which includes a forward rotation control contactor, a reverse rotation control contactor, a stop button, a forward rotation start button, and a reverse rotation start button; the forward rotation control contactor and the reverse rotation control contactor are used to control the forward and reverse rotation of the motor, respectively, and are interlocked with each other; The stop button, as a normally closed button on the main circuit, is used to stop the motor from running; the forward start button and the reverse start button are the start buttons for forward and reverse rotation, respectively, used to start the motor; after the left-hand or right-hand nut seat contacts the second limit switch, the forward control contactor coil de-energizes and the contact jumps, so that the motor can only rotate in reverse and not forward; after the left-hand or right-hand nut seat contacts the first limit switch, the reverse control contactor coil de-energizes and the contact jumps, so that the motor can only rotate in forward and not reverse.

9. A bogie, characterized in that, It includes a frame, two current receivers and two current returners mounted on the frame, and a boot removal device connecting the two current receivers and the two current returners, wherein the boot removal device is the boot removal device as described in any one of claims 1 to 8.

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