Anti-collision blocking device for landing door

Abstract

The present invention discloses a floor door anti-collision blocking device, which includes a blocking plate, wherein the side of the blocking plate close to the floor door is the rear side, and the other side opposite to the rear side is the front side, and the direction perpendicular to the front-rear direction on the horizontal plane is the left-right direction, and when the blocking plate is placed horizontally, the end located at the rear is the rear installation end, and the other end is the front installation end, and the blocking device also includes a connecting rod mechanism for driving the blocking plate to flip and stand up or flip to the horizontal, and a driving part for driving the connecting rod mechanism to move. The present invention uses the driving part to drive the four-bar linkage to move, and then drives the blocking plate to flip to achieve the blocking function, and the action is fast and reliable, which effectively prevents the car from colliding with the elevator floor door when the elevator car is not on the current floor, thereby causing danger.

Description

Technical Field

[0001] The invention belongs to the field of elevator equipment, and in particular relates to an anti-collision blocking device for a landing door. Background Art

[0002] A car elevator is a special cargo elevator used to transport non-commercial cars, i.e., the private cars we use in daily life. When a private car is waiting for the elevator outside the landing door, due to improper operation by the driver, the private car is likely to rush towards and hit the landing door, and the strength of the landing door cannot withstand the impact of the private car, which not only causes damage to the landing door and the private car, but more seriously, the private car crashes into the landing door and rushes into the shaft, causing a bigger accident. Summary of the invention

[0003] The purpose of the present invention is to provide a landing door anti-collision blocking device, which can realize the activation of the blocking function by turning over, and the action is simple, rapid and reliable.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: A floor door anti-collision blocking device, which includes a blocking plate, wherein the side of the blocking plate close to the floor door is the rear side, and the other side opposite to the rear side is the front side, and the direction perpendicular to the front and rear directions on the horizontal plane is the left and right direction. When the blocking plate is placed horizontally, the end at the rear is the rear installation end, and the other end is the front installation end. The blocking device also includes a connecting rod mechanism for driving the blocking plate to flip and stand up or flip to the horizontal, and a driving part for driving the connecting rod mechanism to move.

[0005] Optimized, the connecting rod mechanism is symmetrically installed on the left and right ends of the blocking plate, each of the connecting rod mechanisms includes an upper connecting rod seat, a long connecting rod, and a short connecting rod installed on the side walls on both sides of the floor door, the rear end of the short connecting rod is pivotally connected to the upper end of the upper connecting rod seat and the front end of the short connecting rod is pivotally connected to the rear mounting end of the blocking plate, the front end of the long connecting rod is pivotally connected to the front mounting end of the blocking plate, the middle part is hinged to the lower end of the upper connecting rod seat, and the rear end is provided with a waist-shaped hole, and the free end of the driving part is slidably and rotatably connected to the waist-shaped hole.

[0006] Furthermore, the connecting rod mechanism also includes a first long connecting rod pin, a first short connecting rod pin, a second long connecting rod pin, and a second short connecting rod pin. The upper connecting rod seat is installed in the mounting hole of the wellbore wall and is symmetrically arranged on both sides of the floor door opening. One end of the short connecting rod is hinged with the upper pin hole of the upper connecting rod seat through the first short connecting rod pin, and the other end of the short connecting rod is hinged with the pin hole at the lower part of the side plate when the blocking plate is erected through the second short connecting rod pin. The middle pin hole of the long connecting rod is hinged with the lower pin hole of the upper connecting rod seat through the first long connecting rod pin, and the pin hole at the other end is hinged with the upper pin hole of the side plate when the blocking plate is erected through the second long connecting rod pin. The short connecting rod and the long connecting rod are arranged in an X-shaped cross shape, and the two short connecting rods and the two long connecting rods are symmetrically connected to the upper connecting rod seats arranged on both sides of the floor door opening and the side plates on both sides of the blocking plate. Viewed from the side, the short connecting rod, the long connecting rod, the blocking plate and the upper connecting rod seat form a four-link mechanism.

[0007] Furthermore, the blocking device also includes a rubber seat and rubber. The two rubbers are symmetrically installed and fixed on the walls on both sides of the door opening of the landing door through the rubber seat connected thereto.

[0008] Furthermore, a transmission rod guide pin, a transmission rod, a transmission rod pin, a vertical connecting rod seat, a connecting rod sliding pin, an inner connecting rod, a movable connecting rod pin, a fixed connecting rod pin, an outer connecting rod, a pull plate, a connecting pin, a heavy hammer, a heavy hammer pipe clamp, a lower limit adjustment bolt, a lower limit seat, a heavy hammer pipe and a pressurizing assembly; the upper end of the transmission rod is connected to the slide groove of the long connecting rod through the transmission rod pin, the transmission rod pin can slide in the slide groove of the long connecting rod, and transmit the push and pull force on the transmission rod to the slide groove of the long connecting rod; the vertical connecting rod seat is fixed on the wellbore wall, the outer connecting rod is arranged between the two vertical connecting rod seats, and the pin at one end of the outer connecting rod The hole is coaxially arranged with the pin hole on the vertical connecting rod seat, the fixed connecting rod pin passes through the pin holes on the two vertical connecting rod seats and the pin hole of the outer connecting rod and is fixed on the vertical connecting rod seat, and the outer connecting rod can rotate around the fixed connecting rod pin; the connecting rod sliding pin is arranged in a sliding groove on the two vertical connecting rod seats, and the connecting rod sliding pin can move up and down along this sliding groove, one end of the inner connecting rod is connected to the other end of the outer connecting rod through a movable connecting rod pin, and the other end of the inner connecting rod is connected to the connecting rod sliding pin and arranged coaxially with it; the pin hole at the lower end of the transmission rod is hinged to the connecting rod sliding pin, and a sliding groove is arranged in the middle section of the transmission rod, which is The transmission rod guide pin in the pin hole is connected to the slide groove in the middle section of the transmission rod and limits the rotation of the transmission rod so that the transmission rod can only move up and down; the upper end of the pull plate is connected and fixed to the transmission rod, and the lower end of the pull plate is connected to the weight through a connecting pin. The weight is inserted into the weight tube and can move up and down. The weight tube is fixed to the well wall by upper and lower weight tube clamps. The lower limit seat is fixed to the well wall. The lower limit seat is provided with a lower limit adjustment bolt. The lowest position of the weight is set by adjusting the extension length of the lower limit adjustment bolt, and the weight is prevented from falling into the well; the weight The self-weight of the vehicle is transmitted to the transmission rod through the pull plate, and is converted into a downward pulling force on the sliding groove of the long connecting rod through the transmission rod pin, so that the blocking plate is kept in an upright state; when the pressure-applying component applies pressure on the hinge of the inner connecting rod and the outer connecting rod, this pressure is transmitted through the connecting rod slider mechanism composed of the fixed connecting rod pin, the outer connecting rod, the movable connecting rod pin, the inner connecting rod, the connecting rod sliding pin and the vertical connecting rod seat to become the downward pulling force of the connecting rod sliding pin on the pull plate and the upward thrust of the transmission rod, thereby rotating the blocking plate to a horizontal state; two sets of devices providing push-pull forces for the long connecting rod are arranged symmetrically on both sides of the door opening of the floor door.

[0009] Furthermore, the pressurizing assembly has two sets and is symmetrically arranged on both sides of the car frame, including: a push rod rear seat, a push rod rear pin, a push rod, a push rod front clamp, a push rod pin, a push plate, an in-place switch frame, a retracted in-place switch, a switch hitting plate, and a flat in-place switch. The push rod rear seat is fixed on the car frame, and the rear end of the push rod fixed end of the push rod is connected to the push rod rear seat through the push rod rear pin and then fixed to the car frame, and the front end of the push rod fixed end is fixed to the car frame through the push rod front clamp; the push plate is inserted into the push rod movable end of the push rod and fixed to it through the push rod pin, the switch hitting plate is fixed on the push plate, the flat in-place switch and the retracted in-place switch are fixed to the in-place switch frame, and are fixed to the car frame through the in-place switch frame.

[0010] The beneficial effects of the present invention are as follows: the present invention utilizes the driving part to drive the four-bar linkage to move, and then drives the blocking plate to flip to realize the blocking function, the action is fast and reliable, and it can effectively prevent the car from colliding with the elevator door when the elevator car is not on the current floor, causing danger. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a side view of the blocking state of the anti-collision blocking device of the landing door;

[0012] Figure 2 It is a side view of the landing door anti-collision blocking device in the passing state;

[0013] Figure 3 This is the rear view of the floor door anti-collision blocking device in the blocking state;

[0014] Figure 4 It is a schematic diagram of the push rod structure;

[0015] Among them: 1-push rod rear seat, 2-push rod rear pin, 3-push rod, 4-push plate front fixing frame, 5-push rod front pin, 6-push plate, 7-in-place switch frame, 8-folded in-place switch, 9-switch plate, 10-through in-place switch, 11-transmission rod guide pin, 12-transmission rod, 13-long connecting rod, 14-transmission rod pin, 15-first long connecting rod pin, 16-first short connecting rod pin, 17-upper connecting rod seat, 18-well wall mounting hole, 19-well wall, 20-rubber seat, 21-rubber, 22 -blocking plate, 23-second long connecting rod pin, 24-second short connecting rod pin, 25-short connecting rod, 26-vertical connecting rod seat, 27-connecting rod sliding pin, 28-inner connecting rod, 29-movable connecting rod pin, 30-fixed connecting rod pin, 31-outer connecting rod, 32-pull plate, 33-connecting pin, 34-weight, 35-weight pipe clamp, 36-lower limit adjustment bolt, 37-lower limit seat, 38-weight pipe, 39-floor door opening, 40-car frame, 301-push rod fixed end, 302-push rod moving end. DETAILED DESCRIPTION

[0016] The present invention is described in detail below in conjunction with the embodiments shown in the accompanying drawings:

[0017] like Figure 1-3 As shown, the anti-collision blocking device for the floor door includes a blocking plate, wherein the side of the blocking plate close to the floor door is the rear side, and the other side opposite to the rear side is the front side, and the direction perpendicular to the front and rear directions on the horizontal plane is the left and right direction. When the blocking plate is placed horizontally, the end portion located at the rear is the rear installation end portion, and the other end portion is the front installation end portion. The blocking device also includes a connecting rod mechanism for driving the blocking plate to flip and stand up or flip to the horizontal, and a driving portion for driving the connecting rod mechanism to move.

[0018] The linkage mechanism is symmetrically installed on the left and right ends of the blocking plate, and each of the linkage mechanisms includes an upper linkage seat 17 installed on the side walls on both sides of the landing door, a long linkage 13, a short linkage 25, a rubber seat 20, and a rubber 21. The first long linkage pin 15, the first short linkage pin 16, the second long linkage pin 23, and the second short linkage pin 24. The upper linkage seat 17 is installed in the hoistway wall mounting hole 18 and is symmetrically arranged on both sides of the landing door opening 39. One end of the short linkage 25 is hinged to the upper pin hole of the upper linkage seat 17 through the first short linkage pin 16, and the other end of the short linkage 25 is hinged to the pin hole at the bottom of the side plate when the blocking plate 22 is erected through the second short linkage pin 24. The middle pin hole of the long linkage 13 is hinged to the pin hole at the bottom of the side plate when the blocking plate 22 is erected through the first long linkage pin. The short connecting rod 25 and the long connecting rod 13 are arranged in an X-shaped cross pattern. The two short connecting rods 25 and the two long connecting rods 13 are symmetrically connected to the upper connecting rod seat 17 and the side plates on both sides of the blocking plate 22 arranged on both sides of the landing door opening 39. From the side, the short connecting rod 25, the long connecting rod 13, the blocking plate 22 and the upper connecting rod seat 17 form a four-bar linkage. The two rubbers 21 are symmetrically installed and fixed on the walls on both sides of the landing door opening 39 through the rubber seats 20 connected thereto.

[0019] Transmission rod guide pin 11, transmission rod 12, transmission rod pin 14, vertical connecting rod seat 26, connecting rod sliding pin 27, inner connecting rod 28, movable connecting rod pin 29, fixed connecting rod pin 30, outer connecting rod 31, pull plate 32, connecting pin 33, weight 34, weight pipe clamp 35, lower limit adjustment bolt 36, lower limit seat 37, weight pipe 38 and pressurizing assembly; the upper end of the transmission rod 12 is connected to the slide groove of the long connecting rod 13 through the transmission rod pin 14, the transmission rod pin 14 can slide in the slide groove of the long connecting rod 13, and transmit the push and pull force on the transmission rod 12 to the slide groove of the long connecting rod 13; the vertical connecting rod seat 26 is fixed on the wellbore wall 19, the outer connecting rod 31 is arranged between the two vertical connecting rod seats 26, and the outer The pin hole at one end of the connecting rod 31 is coaxially arranged with the pin hole on the vertical connecting rod seat 26, the fixed connecting rod pin 30 passes through the pin holes on the two vertical connecting rod seats 26 and the pin holes of the outer connecting rod 31 and is fixed on the vertical connecting rod seat 26, and the outer connecting rod 31 can rotate around the fixed connecting rod pin 30; the connecting rod sliding pin 27 is arranged in a slide groove on the two vertical connecting rod seats 26, and the connecting rod sliding pin 27 can move up and down along this slide groove, one end of the inner connecting rod 28 is connected to the other end of the outer connecting rod 31 through a movable connecting rod pin 29, and the other end of the inner connecting rod 28 is connected to the connecting rod sliding pin 27 and is coaxially arranged with it; the pin hole at the lower end of the transmission rod 12 is hinged to the connecting rod sliding pin 25, and the middle section of the transmission rod 12 is provided with a slide groove, which is set in the vertical connecting rod seat The transmission rod guide pin 11 in the pin hole at the upper end of 26 is connected to the slide groove in the middle section of the transmission rod 12 and limits the rotation of the transmission rod 12, so that the transmission rod 12 can only move up and down; the upper end of the pull plate 26 is connected and fixed to the transmission rod 12, and the lower end of the pull plate 32 is connected to the weight 34 through the connecting pin 33. The weight 34 is inserted into the weight tube 38 and can move up and down. The weight tube 38 is fixed to the well wall 19 by the upper and lower weight tube clamps 35. The lower limit seat 37 is fixed to the well wall 19. The lower limit adjustment bolt 36 is set on the lower limit seat 37. The lowest position of the weight 34 is set by adjusting the extension length of the lower limit adjustment bolt 36, and the weight 34 is prevented from falling into the well. The gravity of the weight 34 is transmitted to the transmission rod 12 through the pull plate 32, and is converted into a downward pulling force on the slide groove of the long connecting rod 13 through the transmission rod pin 14, so that the blocking plate 22 is kept in an upright state; when the pressure-applying component applies pressure on the hinge of the inner connecting rod 28 and the outer connecting rod 31, this pressure is transmitted through the connecting rod slider mechanism composed of the fixed connecting rod pin 30, the outer connecting rod 31, the movable connecting rod pin 29, the inner connecting rod 28, the connecting rod sliding pin 27 and the vertical connecting rod seat 26 to become the downward pulling force of the connecting rod sliding pin 27 on the pull plate 32 and the upward thrust of the transmission rod 12, thereby rotating the blocking plate 22 to a horizontal state; two sets of devices for providing push-pull forces for the long connecting rod 13 are arranged symmetrically on both sides of the door opening 39 of the floor door.

[0020] The pressurizing assembly has two sets and is arranged symmetrically on both sides of the car frame 40, including: a push rod rear seat 1, a push rod rear pin 2, a push rod 3, a push rod front clamp 4, a push rod pin 5, a push plate 6, a position switch frame 7, a retracted position switch 8, a switch plate 9, and a level position switch 10. Among them: the push rod rear seat 1 is fixed on the car frame 40, the rear end of the push rod fixed end 301 of the push rod 3 is connected to the push rod rear seat 1 through the push rod rear pin 2, and then fixed on the car frame 40, and the front end of the push rod fixed end 301 is fixed to the car frame 37 through the push rod front clamp 4; the push plate 6 is inserted into the push rod movable end 302 of the push rod 3 and fixed to it through the push rod pin 5, the switch plate 9 is fixed on the push plate 6, the level position switch 10 and the retracted position switch 8 are fixed on the position switch frame 7, and fixed to the car frame 40 through the position switch frame 7.

[0021] When the car elevator is level at this floor: the control system commands the two push rods 3 on the left and right car frames 40 corresponding to the floor to be energized, so that the push rod moving end 302 begins to be pushed out, and the push plate 6 moves forward and then contacts and presses on the hinge between the inner connecting rod 28 and the outer connecting rod 31. At this time, the thrust generated by the push rod 3 is transmitted to the pressure on this hinge. This pressure increases the angle between the outer connecting rod 31 and the inner connecting rod 28, and the connecting rod sliding pin 27 drives the transmission rod 12 to move upward, and pulls the heavy hammer 34 connected to the transmission rod 12 through the pull plate 32 to move upward. At the same time, the transmission rod 12 pushes the long connecting rod 13 to rotate clockwise through the transmission rod pin 14, drives the blocking plate 22 to move downward, and the short connecting rod 25 pulls the lower part of the blocking plate 22, causing the blocking plate 22 to move downward and rotate clockwise at the same time, until the blocking plate 22 rotates to a horizontal state. At this time, the car can enter and exit the elevator car through this device.

[0022] When the car of the car elevator is about to leave the leveling floor, the control system commands the two push rods 3 on the left and right sides of the car frame 40 corresponding to the floor to be energized, so that the push rod moving end 302 begins to retract. At this time, the pressure on the hinge between the inner connecting rod 28 and the outer connecting rod 31 is decreasing. The weight 34 drives the connecting rod sliding pin 27 to move downward through the pull plate 32 under the action of its own gravity. At the same time, the angle between the outer connecting rod 28 and the inner connecting rod 31 becomes smaller, and the connecting rod sliding pin 27 drives the transmission rod 12 to move downward. The transmission rod 12 drives the long connecting rod 13 to rotate counterclockwise through the transmission rod pin 14, drives the blocking plate 22 to move upward, and the short connecting rod 25 pushes the lower part of the blocking plate 22 so that the blocking plate 22 moves upward and rotates counterclockwise until the blocking plate 22 rotates to the upright state and its top surface just fits the rubber 21 on both sides of the door opening 39 of the floor door. At this time, it prevents the car from colliding with the elevator floor door when the elevator car is not on this floor, which is dangerous.

[0023] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A landing door anti-collision blocking device, comprising a blocking plate, wherein the side of the blocking plate close to the landing door is the rear side, the other side opposite to the rear side is the front side, the direction perpendicular to the front-to-back direction on the horizontal plane is the left-right direction, when the blocking plate is placed horizontally, the end portion located at the rear is the rear installation end portion, and the other end portion is the front installation end portion, characterized in that: The blocking device also includes a connecting rod mechanism for driving the blocking plate to flip up or flip to the horizontal, and a driving part for driving the connecting rod mechanism to move; the connecting rod mechanism is symmetrically installed on the left and right ends of the blocking plate, and each of the connecting rod mechanisms includes an upper connecting rod seat, a long connecting rod, and a short connecting rod installed on the side walls on both sides of the floor door, the rear end of the short connecting rod is pivotally connected to the upper end of the upper connecting rod seat and its front end is pivotally connected to the rear mounting end of the blocking plate, the front end of the long connecting rod is pivotally connected to the front mounting end of the blocking plate, the middle part of the long connecting rod is hinged to the lower end of the upper connecting rod seat, and a waist-shaped hole is provided on the rear end, and the free end of the driving part is slidably and rotatably connected to the waist-shaped hole; the connecting rod mechanism also includes a first long connecting rod pin, a first short connecting rod pin, a second long connecting rod pin, and a second short connecting rod pin, the upper connecting rod seat is installed in the mounting hole of the wellway wall, and is symmetrically arranged on both sides of the floor door opening.

2. The anti-collision blocking device for landing doors according to claim 1 is characterized in that: One end of the short connecting rod is hinged with the upper pin hole of the upper connecting rod seat through the first short connecting rod pin, and the other end of the short connecting rod is hinged with the pin hole at the lower part of the side plate when the blocking plate is erected through the second short connecting rod pin. The middle pin hole of the long connecting rod is hinged with the lower pin hole of the upper connecting rod seat through the first long connecting rod pin, and the pin hole at the other end is hinged with the upper pin hole of the side plate when the blocking plate is erected through the second long connecting rod pin. The short connecting rod and the long connecting rod are arranged in an X-shaped cross shape, and the two short connecting rods and the two long connecting rods are symmetrically connected to the upper connecting rod seats arranged on both sides of the door opening of the floor door and the side plates on both sides of the blocking plate. Viewed from the side, the short connecting rod, the long connecting rod, the blocking plate and the upper connecting rod seat form a four-bar linkage.

3. The anti-collision blocking device for landing doors according to claim 1 is characterized in that: The blocking device also includes a rubber seat and rubber. The two rubbers are symmetrically installed and fixed on the walls on both sides of the door opening of the landing door through the rubber seat connected to the two rubbers.

4. The anti-collision blocking device for landing doors according to claim 1 is characterized in that: The driving part includes: a transmission rod guide pin, a transmission rod, a transmission rod pin, a vertical connecting rod seat, a connecting rod sliding pin, an inner connecting rod, a movable connecting rod pin, a fixed connecting rod pin, an outer connecting rod, a pull plate, a connecting pin, a heavy hammer, a heavy hammer pipe clamp, a lower limit adjustment bolt, a lower limit seat, a heavy hammer pipe and a pressurizing component; the upper end of the transmission rod is connected to the sliding groove of the long connecting rod through the transmission rod pin, the transmission rod pin can slide in the sliding groove of the long connecting rod and transmit the push and pull force on the transmission rod to the sliding groove of the long connecting rod; the vertical connecting rod seat is fixed on the wellbore wall, the outer connecting rod is arranged between the two vertical connecting rod seats, and the outer connecting rod is connected to the wellbore wall. The pin hole at the end is coaxially arranged with the pin hole on the vertical connecting rod seat, the fixed connecting rod pin passes through the pin holes on the two vertical connecting rod seats and the pin hole of the outer connecting rod and is fixed on the vertical connecting rod seat, and the outer connecting rod can rotate around the fixed connecting rod pin; the connecting rod sliding pin is arranged in a sliding groove on the two vertical connecting rod seats, and the connecting rod sliding pin can move up and down along this sliding groove, one end of the inner connecting rod is connected to the other end of the outer connecting rod through a movable connecting rod pin, and the other end of the inner connecting rod is connected to the connecting rod sliding pin and is coaxially arranged with it; the pin hole at the lower end of the transmission rod is hinged to the connecting rod sliding pin, and a sliding groove is arranged in the middle section of the transmission rod. The transmission rod guide pin in the pin hole at the upper end of the seat is connected to the slide groove in the middle section of the transmission rod and limits the rotation of the transmission rod so that the transmission rod can only move up and down; the upper end of the pull plate is connected and fixed to the transmission rod, and the lower end of the pull plate is connected to the weight hammer through a connecting pin. The weight hammer is inserted into the weight hammer tube and moves up and down. The weight hammer tube is fixed to the well wall through upper and lower weight hammer tube clamps. The lower limit seat is fixed to the well wall. The lower limit seat is provided with a lower limit adjustment bolt. The lowest position of the weight hammer is set by adjusting the extension length of the lower limit adjustment bolt, and the weight hammer is prevented from falling into the well; the weight hammer The self-weight of the vehicle is transmitted to the transmission rod through the pull plate, and is converted into a downward pulling force on the sliding groove of the long connecting rod through the transmission rod pin, so that the blocking plate is kept in an upright state; when the pressure-applying component applies pressure on the hinge of the inner connecting rod and the outer connecting rod, this pressure is transmitted through the connecting rod slider mechanism composed of the fixed connecting rod pin, the outer connecting rod, the movable connecting rod pin, the inner connecting rod, the connecting rod sliding pin and the vertical connecting rod seat to become the downward pulling force of the connecting rod sliding pin on the pull plate and the upward thrust of the transmission rod, thereby rotating the blocking plate to a horizontal state; two sets of devices providing push-pull forces for the long connecting rod are arranged symmetrically on both sides of the door opening of the floor door.

5. The anti-collision blocking device for landing doors according to claim 4 is characterized in that: The driving part includes: the pressurizing components have two sets and are arranged symmetrically on both sides of the car frame, including: a push rod rear seat, a push rod rear pin, a push rod, a push rod front clamp, a push rod pin, a push plate, an in-place switch frame, a retracted in-place switch, a switch hitting plate, and a flat in-place switch; the push rod rear seat is fixed on the car frame, the rear end of the push rod fixed end of the push rod is connected to the push rod rear seat through the push rod rear pin, and then fixed to the car frame, and the front end of the push rod fixed end is fixed to the car frame through the push rod front clamp; the push plate is inserted into the push rod moving end of the push rod and fixed to it through the push rod pin, the switch hitting plate is fixed on the push plate, the flat in-place switch and the retracted in-place switch are fixed to the in-place switch frame, and are fixed to the car frame through the in-place switch frame.

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