Train door isolation lock device

Abstract

The invention relates to a train door isolation lock device which comprises an isolation lock body assembly and a state detection assembly, the isolation lock body assembly comprises a lock body box, a rotor, a spring bolt and a positioning spring piece, and the outer end of the rotor is a screwing part so as to rotate under the action of external force; the lock tongue synchronously rotates along with the rotor, the positioning spring piece is located in the lock body box and used for applying elastic force to the rotating rotor, and when the lock tongue is in an isolated state and a reset state, the spring piece is in positioning fit with the inner end of the rotor; the state detection assembly comprises a swing arm and a microswitch, and when the spring bolt is in the isolation state, the spring bolt abuts against the swing arm and triggers the microswitch. The train door isolation lock device is simple in structure and convenient to install, isolation and reset of a single fault door can be achieved, and the stability and reliability in the rotating process are guaranteed through cooperation of the designed positioning spring piece and the lock tongue.

Description

Technical Field

[0001] The present invention relates to the technical field of train door locks, and in particular to a train door isolation lock device. Background Art

[0002] The train door isolation lock is one of the core devices in the train door system. When a single door of the train cannot be opened or closed normally, professionals will reset the isolation lock to the isolation position to isolate the faulty door from the whole system, and the door will be out of service, thus ensuring that the normal operation of the entire train is not affected. The isolation lock should have good stability, reliability and convenience. Summary of the invention

[0003] The object of the present invention is to provide a train door isolation lock device which meets the above requirements of stability, reliability and convenience through structural optimization design.

[0004] To achieve the above object, the present invention adopts the following technical solution:

[0005] A train door isolation lock device comprises an isolation lock body component and a state detection component.

[0006] The isolation lock body assembly includes a lock body box, a rotor, a lock tongue and a positioning spring piece. The outer end of the rotor is a screwing part, which rotates under the action of an external force; the lock tongue rotates synchronously with the rotor. The positioning spring piece is located in the lock body box and is used to apply elastic force to the rotating rotor. When the lock tongue is in the isolation state and the reset state, the spring piece is positioned and matched with the inner end of the rotor.

[0007] The state detection component comprises a swing arm and a micro switch. When the lock tongue is in an isolated state, it abuts against the swing arm and triggers the micro switch.

[0008] Furthermore, the rotor is a split structure, including an inner rotor and an outer rotor that are coaxially arranged and anti-rotationally matched, the inner end of the inner rotor is rotatably assembled on a rotor shaft, and the screwing portion is arranged on the outer rotor.

[0009] Furthermore, the lock tongue includes a rotating assembly part and a tongue body. A lock tongue shaft is provided in the lock body box for the rotating assembly part to be assembled. The lock body box is provided with a lock tongue hole on the side facing the status detection component, so that the tongue body can extend from the lock tongue hole when the lock tongue rotates; the lock tongue also has a shift post, and a shift fork is provided on the anti-rotation sleeve on the inner rotor, and the shift fork cooperates with the shift post in transmission.

[0010] Furthermore, the shift fork includes a sleeve portion and a driving portion, the driving portion is a U-shaped notch, and the shift post is located in the U-shaped notch.

[0011] Furthermore, two positioning grooves are arranged at intervals on the outer circumference of the inner rotor, the positioning spring sheet is V-shaped, and a positioning protrusion is arranged on one of the cantilevers of the positioning spring sheet. When the lock tongue is in the isolation and reset states, the positioning protrusion is respectively positioned and matched with one of the positioning grooves of the inner rotor.

[0012] Furthermore, a positioning shaft is provided in the lock body box, the middle part of the positioning spring sheet is sleeved on the positioning shaft, and the other cantilever of the positioning spring sheet is pressed against the inner side wall of the lock body box.

[0013] Furthermore, the outer end of the inner rotor is provided with an I-shaped head, and the inner end of the outer rotor is provided with an I-shaped groove, and the inner rotor and the outer rotor are assembled to prevent rotation through the I-shaped head and the I-shaped groove.

[0014] Furthermore, a mounting plate is provided in the lock body box, the mounting plate has a first through hole for the outer end of the inner rotor to be installed, and a limiting hole is provided on the mounting plate, the limiting hole is an arc-shaped hole, and the end of the lever is located in the limiting hole. The limiting hole is used to limit the swing angle of the lock tongue, thereby improving the reliability and safety of the operation.

[0015] Furthermore, a cover plate is fixed on the outer side of the mounting plate, a second through hole is provided on the cover plate, the inner end of the outer rotor is inserted into the second through hole, a pressure plate is provided on the outer side of the cover plate, a third through hole is provided on the pressure plate, the outer end of the outer rotor is extended out of the third through hole.

[0016] Furthermore, the swing arm is hinged on a fixed shaft, a torsion spring is provided on the fixed shaft, and one end of the torsion spring abuts against a side surface of the swing arm away from the locking tongue.

[0017] Beneficial effects of the present invention:

[0018] When in use, the rotor is operated to rotate, and the rotor can drive the lock tongue to rotate synchronously. The lock tongue moves to abut the swing arm and trigger the micro switch, so that the micro switch can send an electrical isolation signal to the train control system. The rotor can be reset by operating it in the opposite direction. The train door isolation lock device of the present invention has a simple structure and is easy to use. Under the action of the elastic force of the positioning spring sheet, the inner rotor can be tightened during the rotation process without displacement, so that the movement of the lock tongue is more stable and smooth. When the lock tongue moves to the isolation or reset state, the positioning protrusion of the positioning spring sheet is respectively positioned and matched with one of the positioning grooves of the inner rotor to maintain the state of the inner rotor after rotation, so that the lock tongue can be stably in the isolation and reset state, thereby improving the reliability of the isolation lock device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural diagram of a train door isolation lock device of the present invention;

[0020] Figure 2 yes Figure 1 An exploded view of the middle isolation lock body assembly;

[0021] Figure 3 yes Figure 1 A cross-sectional view of the middle isolation lock assembly (in reset state);

[0022] Figure 4 yes Figure 1 Sectional view of the isolated lock body assembly (in isolation).

[0023] The names corresponding to the marks in the figure are:

[0024] 1. Lock body box; 2. Pressure plate; 21. Third through hole; 3. Outer rotor; 4. Cover plate; 41. Second through hole; 5. Lock tongue; 51. Shift column; 6. Swing arm; 7. Micro switch; 8. Torsion spring; 9. Support plate; 10. Rotor shaft; 11. Positioning spring sheet; 111. Positioning protrusion; 12. Inner rotor; 121. Positioning groove; 13. Shift fork; 131. U-shaped notch; 14. Mounting plate; 141. First through hole; 142. Limit hole; 15. Screw; 16. Lock tongue shaft; 17. Positioning shaft. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] Example:

[0027] like Figure 1-Figure 4 As shown, a train door isolation lock device includes an isolation lock body component and a state detection component, wherein the isolation lock body component and the state detection component are fixed to the door panel frame of the train door by screws. The isolation lock body component has two states: isolation and reset, and the state detection component is used to detect the state of the isolation lock body component.

[0028] The isolated lock body assembly includes a lock body box, a rotor, a lock tongue and a positioning spring sheet. The rotor is a split structure, including an inner rotor and an outer rotor that are coaxially arranged and anti-rotationally matched. The inner end of the inner rotor is rotatably assembled on a rotor shaft, and the inner end of the rotor shaft is fixed to the inner wall of the lock body box. The outer end of the inner rotor is provided with an "I" head, and the inner end of the outer rotor is provided with an "I" groove. The inner rotor and the outer rotor are anti-rotationally matched through the "I" head and the "I" groove, that is, the inner rotor can rotate synchronously with the outer rotor.

[0029] The outer end of the rotor is a screwing part, so that it can rotate under the action of external force. The train staff can drive the rotor to rotate using a special key to switch between the isolation and reset states.

[0030] The lock tongue rotates synchronously with the inner rotor. The lock tongue includes a rotating assembly part and a tongue body. A lock tongue shaft is provided in the lock body box for the rotating assembly part to be assembled. The lock tongue shaft is arranged parallel to the rotor shaft, and the lock tongue can rotate around the lock tongue shaft. The lock body box is provided with a lock tongue hole on the side facing the status detection component, so that the main part of the tongue body can extend out of the lock tongue hole when the lock tongue rotates. The lock tongue hole is a rectangular through hole.

[0031] The lock tongue has a shift post, and a shift fork is provided on the anti-rotation sleeve of the inner rotor, and the shift fork cooperates with the shift post in transmission. The shift fork includes a sleeve part and a driving part, and the driving part is a U-shaped notch, and the shift post is located in the U-shaped notch. The sleeve part and the inner rotor are anti-rotationally matched, so that when the inner rotor rotates clockwise, the shift fork is driven to rotate clockwise, and the shift fork drives the lock tongue to rotate counterclockwise.

[0032] A mounting plate is provided in the lock body box, and the mounting plate has a first through hole for the outer end of the inner rotor to be installed. A limiting hole is provided on the mounting plate, and the limiting hole is an arc-shaped hole, and the end of the lever is located in the limiting hole. The limiting hole can be used to limit the swing angle of the lock tongue.

[0033] A cover plate is fixed on the outside of the mounting plate, and a second through hole is provided on the cover plate, and the second through hole is for the inner end of the outer rotor to be installed. If the inner and outer ends of the rotor are defined as being in the front-to-back direction, flanges are provided on the left and right sides of the mounting plate and the cover plate, and connecting holes are provided on the flanges of both plates and are correspondingly arranged for two screws to pass through. The screws are inserted from the outside of the lock body box to fix the mounting plate, the cover plate and the lock body box together. The flanges of the mounting plate and the cover plate are in opposite directions, so that after the mounting plate and the cover plate are buckled together, there is still a certain cavity between the two, which can be used to insert the ends of the inner and outer rotors and the end of the lever.

[0034] A pressure plate is provided on the outer side of the cover plate, and a third through hole is provided on the pressure plate, and the third through hole is used for the outer end of the outer rotor to extend out. The first through hole, the second through hole, and the third through hole are all circular holes. The pressure plate is fixed to the cover plate by screws, and the outer rotor is stably supported between the pressure plate and the cover plate, and can rotate when subjected to external force.

[0035] The positioning spring piece is located in the lock body box and is used to apply elastic force to the rotating rotor. When the lock tongue is in the isolation state and the reset state, the spring piece is positioned and matched with the inner end of the rotor.

[0036] The positioning spring piece includes two cantilevers, which are V-shaped as a whole. The connecting part of the two cantilevers, that is, the middle position of the positioning spring piece, forms a C-shaped groove. A positioning shaft is provided in the lock body box, and the positioning shaft is parallel to the rotor shaft. The C-shaped groove of the positioning spring piece is clamped on the positioning shaft. A positioning protrusion is provided on one of the cantilevers of the positioning spring piece, and the other cantilever of the positioning spring piece is against the inner wall of the lock body box. The positioning protrusion is formed by partially bending the cantilever downward, and is an arc-shaped protrusion.

[0037] Two positioning grooves are arranged at intervals on the outer circumference of the inner rotor. The positioning grooves are arc-shaped notches for cooperating with the positioning protrusions. When the lock tongue is in the isolation and reset states, the positioning protrusions are respectively positioned and matched with one of the positioning grooves of the inner rotor to maintain the state after the inner rotor rotates, so that the lock tongue can be stably in the isolation and reset states.

[0038] The state detection component includes a swing arm and a micro switch. When the lock tongue is in the isolated state, it abuts against the swing arm and the micro switch is triggered by the swing arm. The swing arm is hinged on the fixed shaft, and a torsion spring is provided on the fixed shaft. One end of the torsion spring abuts against the side of the swing arm away from the lock tongue. After the lock tongue abuts against the swing arm to make it swing, it compresses the torsion spring. After the lock tongue leaves, the swing arm is reset under the action of the torsion spring. The fixed shaft and the micro switch are both installed on the support plate, and the support plate is fixed in the train door panel by screws.

[0039] When a train door needs to be isolated, use a special key to rotate the outer rotor clockwise, and the inner rotor rotates synchronously. The inner rotor drives the shift fork to rotate clockwise, and the shift fork drives the lock tongue to rotate counterclockwise, and finally extends out of the lock tongue hole of the lock body box. When the lock tongue rotates to contact the swing arm, it gradually presses against the swing arm to rotate, and finally the swing arm triggers the micro switch. The lock tongue is in the isolation position and generates an electrical signal to the train control system. The control system electrically isolates the train door and does not affect the normal opening and closing control of other doors. When the lock tongue rotates to the isolation position, the positioning protrusion of the positioning spring sheet is stuck in one of the positioning grooves of the inner rotor to fix the lock tongue. In addition, under the action of the elastic force of the positioning spring sheet, the inner rotor can be tightened during the rotation process without displacement, so that the movement of the lock tongue is more stable and smooth.

[0040] When the above train door needs to be reset, use a special key to rotate the outer rotor counterclockwise, the inner rotor rotates synchronously, the inner rotor drives the shift fork to rotate counterclockwise, the shift fork drives the lock tongue to rotate clockwise, and the lock tongue finally returns to the lock body box, and the lock tongue is in a reset state. The swing arm is reset under the action of the torsion spring, and the micro switch generates an electrical signal to the train control system, that is, the isolation of the train door is released. When the lock tongue rotates to the reset state, the positioning protrusion of the positioning spring sheet is stuck in another positioning groove of the inner rotor, so that the lock tongue is fixed.

[0041] In other embodiments, the inner and outer rotors may be integrated, and for ease of assembly, the through holes on the mounting plate and the cover plate may be U-shaped holes with one side open.

[0042] In other embodiments, the mounting plate and the cover plate may be fixed by screws instead of the screw rods mentioned above.

[0043] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that are the same or similar to those of the present application fall within the protection scope of the present invention.

Claims

1. A train door isolation lock device, characterized in that: It includes an isolation lock body assembly and a state detection assembly. The isolation lock body assembly includes a lock body box, a rotor, a lock tongue and a positioning spring sheet. The outer end of the rotor is a screwing part so as to rotate under the action of an external force. The lock tongue rotates synchronously with the rotor. The positioning spring piece is located in the lock body box and is used to apply elastic force to the rotating rotor. When the lock tongue is in the isolation and reset states, the spring piece is positioned and matched with the inner end of the rotor. The state detection component comprises a swing arm and a micro switch. When the lock tongue is in an isolated state, it abuts against the swing arm and triggers the micro switch.

2. A train door isolation lock device according to claim 1, characterized in that: The rotor is a split structure, including an inner rotor and an outer rotor which are coaxially arranged and anti-rotationally matched. The inner end of the inner rotor is rotatably assembled on a rotor shaft, and the screwing part is arranged on the outer rotor.

3. A train door isolation lock device according to claim 2, characterized in that: The lock tongue comprises a rotating assembly part and a tongue body. A lock tongue shaft is arranged in the lock body box for assembling the rotating assembly part. A lock tongue hole is arranged on the side of the lock body box facing the status detection component so that the tongue body can extend from the lock tongue hole when the lock tongue rotates. The lock tongue also has a shift post. A shift fork is arranged on the anti-rotation sleeve of the inner rotor, and the shift fork cooperates with the shift post in transmission.

4. A train door isolation lock device according to claim 3, characterized in that: The shift fork comprises a sleeve portion and a driving portion, the driving portion is a U-shaped notch, and the shift post is located in the U-shaped notch.

5. A train door isolation lock device according to claim 2, characterized in that: The outer circumference of the inner rotor is provided with two positioning grooves at intervals, the positioning spring sheet is V-shaped, and one of the cantilevers of the positioning spring sheet is provided with a positioning protrusion. When the lock tongue is in the isolation and reset states, the positioning protrusion is respectively positioned and matched with one of the positioning grooves of the inner rotor.

6. A train door isolation lock device according to claim 5, characterized in that: A positioning shaft is arranged in the lock body box, the middle part of the positioning spring piece is sleeved on the positioning shaft, and the other cantilever of the positioning spring piece is pressed against the inner side wall of the lock body box.

7. A train door isolation lock device according to claim 5, characterized in that: The outer end of the inner rotor is provided with an I-shaped head, and the inner end of the outer rotor is provided with an I-shaped groove. The inner rotor and the outer rotor are assembled to prevent rotation through the I-shaped head and the I-shaped groove.

8. A train door isolation lock device according to claim 3, characterized in that: A mounting plate is provided in the lock body box, the mounting plate has a first through hole for the outer end of the inner rotor to be installed, and a limiting hole is provided on the mounting plate, the limiting hole is an arc-shaped hole, and the end of the dial column is located in the limiting hole.

9. A train door isolation lock device according to claim 8, characterized in that: A cover plate is fixed on the outer side of the mounting plate, a second through hole is provided on the cover plate, the inner end of the outer rotor is inserted into the second through hole, a pressure plate is provided on the outer side of the cover plate, a third through hole is provided on the pressure plate, the outer end of the outer rotor is extended out of the third through hole.

10. A train door isolation lock device according to claim 1, characterized in that: The swing arm is hinged on a fixed shaft, a torsion spring is arranged on the fixed shaft, and one end of the torsion spring abuts against a side surface of the swing arm away from the locking tongue.

Images