Track changing switching mechanism

Abstract

The present invention relates to the field of track technology, and discloses a track change switching mechanism, including symmetrically arranged fixed tracks, a mobile frame is slidably installed between the fixed tracks, a straight track and a curved track for switching the route of the overhead rail shuttle vehicle are arranged at the bottom of the mobile frame, a first end plate and a second end plate are respectively installed at both ends of the fixed track, a driving motor is installed on the first end plate, and the driving motor is connected to the mobile frame for controlling the movement of the mobile frame; when the mobile frame moves to the side of the first end plate, the main track is connected to the curved track; when the mobile frame moves to the side of the second end plate, the main track is connected to the straight track. This solution improves the stability of track docking, improves the protection of the track, and extends the service life.

Description

Technical Field

[0001] The invention relates to the field of track technology, in particular to a track change switching mechanism. Background Art

[0002] In the industrial field, ceiling rails usually refer to a track system fixed to the ceiling or roof, which is used to support and move robots, drones, automatic spraying robots and other equipment. This track system can improve work efficiency and safety, reduce manual labor and the risk of damage to objects. In the ceiling rail system, the switching device that can automatically switch the track at the intersection of the track is a key component to ensure that the system can flexibly and safely transfer patients or objects.

[0003] When the overhead rail shuttle runs on the overhead rail system, it needs to reach different positions according to the instructions. At this time, the overhead rail system should change the shuttle's walking track in time. When the existing overhead rail track changes, first, the system receives instructions from the user or the control center, determines the track that needs to be switched, and then moves the required track to the main track, thereby achieving the task of turning or going straight.

[0004] However, after the existing track is switched and moved, the connection with the main track is not stable enough, which causes the overhead rail shuttle to shake when passing by, affecting the stability of movement, posing a safety hazard, and also affecting the service life of the overhead rail; therefore, it does not meet the existing needs. In this regard, we have proposed a track change switching mechanism. Summary of the invention

[0005] The present invention provides a track changing and switching mechanism, which has the beneficial effects of improving the stability of track docking, improving the protection of the track, and extending the service life. It solves the problem mentioned in the above background technology that after the existing track is switched and moved, the connection with the main track is not stable enough, which causes the overhead rail shuttle to shake when passing by, affecting the stability of movement, posing a safety hazard, and also affecting the service life of the overhead rail.

[0006] The present invention provides the following technical solution: a track change switching mechanism, comprising symmetrically arranged fixed tracks, a moving frame is slidably installed between the fixed tracks, a straight track and a curved track for switching the travel route of the sky rail shuttle vehicle are arranged at the bottom of the moving frame, a first end plate and a second end plate are respectively installed at both ends of the fixed track, a driving motor is installed on the first end plate, and the driving motor is drivingly connected to the moving frame for controlling the movement of the moving frame;

[0007] When the mobile frame moves to the side of the first end plate, the main track is connected with the curved track;

[0008] When the movable frame moves to one side of the second end plate, the main track is connected to the linear track.

[0009] As an optional scheme of a track changing and switching mechanism described in the present invention, wherein: a turntable is rotatably mounted on the first end plate, the output shaft of the drive motor is coaxially connected to the turntable, a rotating arm is eccentrically mounted on the turntable, a transmission rod is hinged at the end of the rotating arm, a sliding bar hole is opened on the side of the movable frame adjacent to the first end plate, the transmission rod passes through the sliding bar hole, a driving block is installed on the side of the movable frame adjacent to the second end plate, and the other end of the transmission rod is hinged to the driving block.

[0010] As an optional solution of the track changing and switching mechanism described in the present invention, wherein: walking rollers are installed on both sides of the mobile frame, the walking rollers are slidably matched with the fixed track, a limit bar is installed in the fixed track, the walking roller is set as a butterfly wheel, and the limit bar is slidably engaged with the middle part of the walking roller.

[0011] As an optional solution of the track change switching mechanism described in the present invention, wherein: the two ends of the limit strip are connected to a relief air pipe, and the relief air pipe is configured as a rubber tube with a plurality of diaphragms inside, and air holes are opened on the plurality of diaphragms, and an air chamber is formed between two adjacent diaphragms;

[0012] When the walking roller moves onto the relief air pipe, the walking roller and the relief air pipe are interference fit, and the overhead rail completes track switching.

[0013] As an optional solution of a track changing and switching mechanism described in the present invention, the first connecting seat and the second connecting seat are installed on the bottom side of the movable frame, the straight track is installed on the bottom side of the first connecting seat, the curved track is installed on the bottom side of the second connecting seat, and first clamping blocks for docking with the main track are installed on both sides of the straight track, and second clamping blocks are installed on the sides of the curved track.

[0014] As an optional scheme of a track changing and switching mechanism described in the present invention, wherein: a first adsorption component and a first air pipe are installed on the first end plate, a second adsorption component and a second air pipe are installed on the second end plate, first adsorption holes are opened on both sides of the straight track, and second adsorption holes are opened on the side of the curved track, the first air pipe is connected between the first adsorption component and the second adsorption hole, and the second air pipe is connected between the second adsorption component and the first adsorption hole.

[0015] As an optional solution of a track change and switching mechanism described in the present invention, wherein: the first adsorption component includes a resistance block slidably mounted on the first end plate, a return spring is installed between the resistance block and the inner wall of the first end plate, the other end of the resistance block is connected to a push-pull plate, the end of the push-pull plate is connected to a piston plate, an adsorption air cavity is arranged inside the first end plate, the piston plate is slidably mounted in the adsorption air cavity, the second air pipe is connected to the adsorption air cavity, when the moving frame moves to one side of the first end plate, the moving frame resists the resistance block, and the second adsorption hole generates suction;

[0016] The structure of the second adsorption assembly is the same as that of the first adsorption assembly. When the movable frame moves to one side of the second end plate, the second adsorption assembly is triggered and the first adsorption hole generates suction.

[0017] As an optional solution of the track change switching mechanism described in the present invention, wherein: the push-pull plate includes a plate sleeve and a passive plate, the plate sleeve is connected to the abutment block, the passive plate is connected to the piston plate, the passive plate is slidably inserted in the plate sleeve, a tension spring is connected between the plate sleeve and the passive plate, a blocking block is installed in the adsorption air cavity, and a rubber block is installed on the side of the passive plate;

[0018] In normal state, the blocking block contacts the rubber block;

[0019] When the curved track is connected to the main track, the rubber block breaks through the blocking block.

[0020] As an optional solution of the track changing and switching mechanism described in the present invention, wherein: a double gear is rotatably installed on the side of the interference block, a fixed rack is fixedly installed inside the first end plate, the double gear is meshed with the fixed rack, an output rack is slidably installed in the first end plate, the double gear is meshed with the output rack at the same time, and the output rack is connected to the push-pull plate.

[0021] As an optional solution of the track change switching mechanism described in the present invention, a slider is installed on the side of the output rack, and the slider is slidably matched with the inner wall of the first end plate.

[0022] The present invention has the following beneficial effects:

[0023] 1. The track switching mechanism, through the cooperation of fixed track, mobile frame, straight track and curved track, realizes the translation of the mobile frame through the rotating arm, transmission rod and driving block when the driving motor is running, thereby controlling the straight track or the curved track to run to the gap of the main track, realizes docking with the main track, completes the track switching, and enables the overhead rail shuttle to run on the set track. The overhead rail cutting system of this scheme can carry straight overhead rail tracks and curved overhead rail tracks. When the overhead rail shuttle needs to travel in a straight line, the driving motor drives the mobile frame to dock the straight track with the straight travel route of the shuttle. When the overhead rail shuttle needs to turn, the driving motor pulls the mobile frame to dock the curved track at the intersection of two perpendicular overhead rail sections, so that the overhead rail shuttle turns, realizes rapid switching of overhead rail tracks, and improves track switching efficiency.

[0024] 2. The track change switching mechanism sets a first clamping block and a second clamping block on the side of the straight track and the curved track, so that after the track is switched, the first clamping block or the second clamping block can be engaged with the main track, thereby making the track connection more stable. Through the setting of the walking rollers and the limit strips, the moving frame moves smoothly and stably without derailment. Moreover, through the setting of the relief air pipe, when the straight track or the curved track is docked with the main track, the walking rollers have a deceleration and buffering effect, and when the walking rollers stop, they are in a large friction environment, making it difficult to move, thereby further improving the stability of the track docking, improving the protection of the track, and extending the service life.

[0025] 3. The track switching mechanism, through the arrangement of the first adsorption component and the second adsorption component, will contact the first end plate or the second end plate when the mobile frame runs to one end of the fixed track, thereby triggering the first adsorption component or the second adsorption component, so that negative pressure is generated in the adsorption air cavity, and the second adsorption hole connected to the adsorption air cavity will also generate suction, so that the curved track connected to the main track at this time is more stable, further improving the reliability after the track switching, and making the sky rail shuttle car move more smoothly;

[0026] Moreover, through the arrangement of the plate sleeve, the passive plate and the tension spring, when the resistance block is resisted, the plate sleeve moves, and due to the obstruction of the blocking block and the rubber block, the tension spring is stretched by the force until the resistance block has the maximum resistance, and the movable frame fits with the first end plate. At this time, the rubber block breaks through the blocking block, causing the passive plate to move quickly and driving the piston plate to move, thereby ensuring that suction is generated and a quick response is achieved only after the track is docked in place. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention when the curve is connected.

[0028] Figure 2It is a schematic diagram of the three-dimensional structure of the present invention during straight line connection.

[0029] Figure 3 It is a side view stereoscopic structural schematic diagram of the present invention.

[0030] Figure 4 It is a schematic diagram of the three-dimensional structure of the first adsorption component of the present invention.

[0031] Figure 5 It is a schematic diagram of the cross-sectional structure of the first adsorption component of the present invention.

[0032] Figure 6 It is a schematic diagram of the overall side cross-sectional structure of the present invention.

[0033] Figure 7 It is a schematic diagram of the tracheal relief structure of the present invention.

[0034] Figure 8 It is a schematic diagram of the switching straight line structure of the present invention.

[0035] Fig. 9 It is a schematic diagram of the switching curve structure of the present invention.

[0036] Fig.10 For the present invention Figure 1 A is an enlarged structural diagram of FIG.

[0037] Fig.11 For the present invention Figure 1 Schematic diagram of the enlarged structure at B.

[0038] Fig.12 For the present invention Figure 3 Enlarged structural diagram at C.

[0039] In the figure: 110, fixed track; 111, relief air pipe; 1111, air chamber; 1112, diaphragm; 1113, air hole; 112, limit strip; 120, first end plate; 130, second end plate; 140, drive motor; 160, drive block; 170, transmission rod; 180, rotating arm; 190, turntable; 210, moving frame; 211, sliding bar hole; 220, walking roller; 310, straight track; 311, first connecting seat; 312, first clamping block; 313, first adsorption hole; 320, curved track ; 321, second connecting seat; 322, second clamping block; 323, second adsorption hole; 400, first adsorption component; 410, resistance block; 420, adsorption air cavity; 430, push-pull plate; 431, plate sleeve; 432, passive plate; 433, tension spring; 440, piston plate; 450, return spring; 460, rubber block; 470, blocking block; 500, second adsorption component; 510, first air pipe; 520, second air pipe; 610, fixed rack; 620, double gear; 630, output rack; 640, slider. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Embodiment 1: This embodiment aims to solve the problem that after the existing track is switched and moved, the connection with the main track is not stable enough, which causes the sky rail shuttle to shake when passing by, affecting the stability of movement, posing a safety hazard, and also affecting the service life of the sky rail. Please refer to Figure 1-Figure 12 A track changing and switching mechanism includes symmetrically arranged fixed rails 110, between which a moving frame 210 is slidably installed, a straight rail 310 and a curved rail 320 for switching the route of an overhead rail shuttle are arranged at the bottom of the moving frame 210, a first end plate 120 and a second end plate 130 are respectively installed at both ends of the fixed rail 110, a driving motor 140 is installed on the first end plate 120, and the driving motor 140 is transmission-connected to the moving frame 210 for controlling the movement of the moving frame 210.

[0042] In specific configuration, the driving motor 140 is configured as a reduction motor.

[0043] See Figure 8 and Fig. 9When the moving frame 210 moves to the first end plate 120 side, the main track is connected to the curved track 320. When the moving frame 210 moves to the second end plate 130 side, the main track is connected to the linear track 310.

[0044] See Figure 1 and Figure 2 A turntable 190 is rotatably mounted on the first end plate 120, the output shaft of the driving motor 140 is coaxially connected to the turntable 190, a rotating arm 180 is eccentrically mounted on the turntable 190, and a transmission rod 170 is hinged at the end of the rotating arm 180, a sliding bar hole 211 is opened on the side of the mobile frame 210 adjacent to the first end plate 120, and the transmission rod 170 passes through the sliding bar hole 211, and a driving block 160 is mounted on the side of the mobile frame 210 adjacent to the second end plate 130, and the other end of the transmission rod 170 is hinged to the driving block 160. The driving motor 140 drives the transmission rod 170 to swing through the turntable 190 and the rotating arm 180, and then pushes the mobile frame 210 to move through the driving block 160.

[0045] Travel rollers 220 are installed on both sides of the mobile frame 210. The travel rollers 220 are slidably matched with the fixed track 110. A limit bar 112 is installed in the fixed track 110. The travel rollers 220 are configured as butterfly wheels. The limit bar 112 is slidably engaged with the middle of the travel rollers 220.

[0046] In this embodiment: through the cooperation of the fixed track 110, the mobile frame 210, the straight track 310 and the curved track 320, when the drive motor 140 is running, the translation of the mobile frame 210 is realized through the transmission of the rotating arm 180, the transmission rod 170 and the driving block 160, so as to control the straight track 310 or the curved track 320 to run to the gap of the main track, realize docking with the main track, complete the track switching, and enable the overhead rail shuttle to run on the set track. The overhead rail cutting system of this scheme can carry straight overhead rail tracks and curved overhead rail tracks. When the overhead rail shuttle needs to travel in a straight line, the drive motor 140 drives the mobile frame 210 to dock the straight track 310 with the route of the shuttle car's straight travel. When the overhead rail shuttle needs to turn, the drive motor 140 pulls the mobile frame 210 to dock the curved track 320 at the intersection of two mutually perpendicular overhead rail sections, so that the overhead rail shuttle turns, realizes rapid switching of the overhead rail tracks, and improves the track switching efficiency.

[0047] Embodiment 2: This embodiment aims to promote the solution of improving the connection stability after track switching and prolonging the service life of the equipment. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1-Figure 12 , the two ends of the limit strip 112 are connected to the relief air pipe 111, see Figure 7The relief air pipe 111 is configured as a rubber tube with a plurality of diaphragms 1112 inside. The diaphragms 1112 are each provided with air holes 1113 , and an air chamber 1111 is formed between two adjacent diaphragms 1112 .

[0048] When the walking roller 220 moves onto the relief air pipe 111, the walking roller 220 and the relief air pipe 111 are interference fit, and the overhead rail completes the track switching.

[0049] See Figure 3 A first connecting seat 311 and a second connecting seat 321 are installed on the bottom side of the movable frame 210, the straight track 310 is installed on the bottom side of the first connecting seat 311, the curved track 320 is installed on the bottom side of the second connecting seat 321, and first clamping blocks 312 for docking with the main track are installed on both sides of the straight track 310, and second clamping blocks 322 are installed on the sides of the curved track 320.

[0050] In this embodiment: by setting the first clamping block 312 and the second clamping block 322 on the side of the straight track 310 and the curved track 320, after the track is switched, the first clamping block 312 or the second clamping block 322 can be engaged with the main track, so that the track connection is more stable. By setting the walking roller 220 and the limit bar 112, the moving frame 210 moves smoothly and stably without derailing. Moreover, by setting the relief air pipe 111, when the straight track 310 or the curved track 320 is docked with the main track, the walking roller 220 and the relief air pipe 111 are squeezed. Since the relief air pipe 111 is a rubber hose, it is often In the release state, the air hole 1113 on the diaphragm 1112 is naturally closed, but when the air pipe 111 is squeezed by the walking roller 220, the air chamber 1111 corresponding to the contact position is squeezed to make the air hole 1113 ventilated, and the air in the air chamber 1111 flows, so that the air pipe 111 can be deformed smoothly to allow the walking roller 220 to move. However, the deformation of the air pipe 111 takes a certain amount of time, so it will have a deceleration and buffering effect on the walking roller 220, and when the walking roller 220 stops, it is subject to a large friction force, making it difficult to move, further improving the stability of the track docking, and improving the protection of the track, extending the service life.

[0051] Embodiment 3: This embodiment is intended to promote the solution of further improving the stability of the connection between the straight track 310 or the curved track 320 and the main track. This embodiment is an improvement made on the basis of embodiment 2. For details, please refer to Figure 1-Figure 12A first adsorption component 400 and a first air pipe 510 are installed on the first end plate 120, a second adsorption component 500 and a second air pipe 520 are installed on the second end plate 130, first adsorption holes 313 are opened on both sides of the linear track 310, and second adsorption holes 323 are opened on the side of the curved track 320. The first air pipe 510 is connected between the first adsorption component 400 and the second adsorption hole 323, and the second air pipe 520 is connected between the second adsorption component 500 and the first adsorption hole 313.

[0052] The first adsorption assembly 400 includes a resistance block 410 slidably mounted on the first end plate 120, a return spring 450 is installed between the resistance block 410 and the inner wall of the first end plate 120, and the other end of the resistance block 410 is connected to a push-pull plate 430, which is set as an L-shaped plate.

[0053] The end of the push-pull plate 430 is connected to the piston plate 440. An adsorption air cavity 420 is provided inside the first end plate 120. The piston plate 440 is slidably installed in the adsorption air cavity 420. The second air pipe 520 is connected to the adsorption air cavity 420. When the moving frame 210 moves to the side of the first end plate 120, the moving frame 210 abuts against the abutment block 410, and the second adsorption hole 323 generates suction.

[0054] The structure of the second adsorption assembly 500 is the same as that of the first adsorption assembly 400. When the moving frame 210 moves to the side of the second end plate 130, the second adsorption assembly 500 is triggered and the first adsorption holes 313 generate suction.

[0055] The push-pull plate 430 includes a plate sleeve 431 and a passive plate 432. The plate sleeve 431 is connected to the resistance block 410, and the passive plate 432 is connected to the piston plate 440. The passive plate 432 is slidably inserted in the plate sleeve 431. A tension spring 433 is connected between the plate sleeve 431 and the passive plate 432. A blocking block 470 is installed in the adsorption air cavity 420, and a rubber block 460 is installed on the side of the passive plate 432.

[0056] In normal state, the blocking block 470 conflicts with the rubber block 460 ; when the curved track 320 is connected to the main track, the rubber block 460 breaks through the blocking block 470 .

[0057] See Figure 4 and Figure 5 A double gear 620 is rotatably installed on the side of the resistance block 410, a fixed rack 610 is fixedly installed inside the first end plate 120, the double gear 620 is meshed with the fixed rack 610, an output rack 630 is slidably installed in the first end plate 120, the double gear 620 is meshed with the output rack 630 at the same time, and the output rack 630 is connected to the push-pull plate 430.

[0058] In the specific configuration, a slider 640 is installed on the side of the output rack 630, and the slider 640 is slidably matched with the inner wall of the first end plate 120. The double gear 620 is configured as two identical gears. When the abutment block 410 moves, the double gear 620 rotates around its axis, and through the meshing with the two racks, the movement of the abutment block 410 is converted into the horizontal movement of the output rack 630. Due to the rolling stroke of the double gear 620, the actual moving distance of the output rack 630 is greater than the moving distance of the abutment block 410. Therefore, in a limited trigger stroke, the output distance brought by the trigger is expanded, the space utilization rate is improved, and the adsorption effect is also ensured.

[0059] In this embodiment: through the arrangement of the first adsorption component 400 and the second adsorption component 500, when the mobile frame 210 runs to one end of the fixed track 110, it will contact the first end plate 120 or the second end plate 130, thereby triggering the first adsorption component 400 or the second adsorption component 500. For example, when the mobile frame 210 contacts the contact block 410, the contact block 410 moves toward the first end plate 120, so that the push-pull plate 430 moves, thereby pulling the piston plate 440 to move, so that negative pressure is generated in the adsorption air cavity 420, and the second adsorption hole 323 connected to the adsorption air cavity 420 also generates suction, so that the curved track 320 connected to the main track at this time is more stably connected, and the reliability after the track switching is further improved, so that the sky rail shuttle car moves more smoothly;

[0060] Moreover, through the arrangement of the plate sleeve 431, the passive plate 432 and the tension spring 433, when the resistance block 410 is resisted, the plate sleeve 431 moves, and due to the obstruction of the blocking block 470 and the rubber block 460, the tension spring 433 is stretched by the force until the resistance block 410 is at its maximum, and the movable frame 210 is fitted with the first end plate 120. At this time, the rubber block 460 breaks through the blocking block 470, causing the passive plate 432 to move quickly, and driving the piston plate 440 to move, thereby ensuring that suction is generated only after the track is docked in place, and responds quickly.

[0061] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0062] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A track change switching mechanism, comprising symmetrically arranged fixed tracks (110), characterized in that: A moving frame (210) is slidably mounted between the fixed rails (110); a straight rail (310) and a curved rail (320) for switching the travel route of the sky rail shuttle are arranged at the bottom of the moving frame (210); a first end plate (120) and a second end plate (130) are respectively mounted at both ends of the fixed rails (110); a driving motor (140) is mounted on the first end plate (120); the driving motor (140) is drivingly connected to the moving frame (210) and is used to control the movement of the moving frame (210); When the movable frame (210) moves to the side of the first end plate (120), the main track is connected to the curved track (320); When the movable frame (210) moves to one side of the second end plate (130), the main track is connected to the linear track (310); A first adsorption assembly (400) and a first air pipe (510) are mounted on the first end plate (120), a second adsorption assembly (500) and a second air pipe (520) are mounted on the second end plate (130), first adsorption holes (313) are opened on both sides of the linear track (310), a second adsorption hole (323) is opened on the side of the curved track (320), the first air pipe (510) is connected between the first adsorption assembly (400) and the second adsorption hole (323), and the second air pipe (520) is connected between the second adsorption assembly (500) and the first adsorption hole (313); The first adsorption component (400) comprises a resistance block (410) slidably mounted on the first end plate (120), a return spring (450) is installed between the resistance block (410) and the inner wall of the first end plate (120), the other end of the resistance block (410) is connected to a push-pull plate (430), the end of the push-pull plate (430) is connected to a piston plate (440), an adsorption air cavity (420) is provided inside the first end plate (120), the piston plate (440) is slidably mounted in the adsorption air cavity (420), the second air pipe (520) is connected to the adsorption air cavity (420), when the moving frame (210) moves to one side of the first end plate (120), the moving frame (210) abuts against the resistance block (410), and the second adsorption hole (323) generates suction; The structure of the second adsorption assembly (500) is the same as that of the first adsorption assembly (400); when the movable frame (210) moves to the side of the second end plate (130), the second adsorption assembly (500) is triggered, and the first adsorption hole (313) generates suction; The push-pull plate (430) comprises a plate sleeve (431) and a passive plate (432), the plate sleeve (431) is connected to the abutment block (410), the passive plate (432) is connected to the piston plate (440), the passive plate (432) is slidably inserted in the plate sleeve (431), a tension spring (433) is connected between the plate sleeve (431) and the passive plate (432), a blocking block (470) is installed in the adsorption air cavity (420), and a rubber block (460) is installed on the side of the passive plate (432); In a normal state, the blocking block (470) is in conflict with the rubber block (460); When the curved track (320) is connected to the main track, the rubber block (460) breaks through the blocking block (470).

2. A track change switching mechanism according to claim 1, characterized in that: A turntable (190) is rotatably mounted on the first end plate (120), an output shaft of the drive motor (140) is coaxially connected to the turntable (190), a rotating arm (180) is eccentrically mounted on the turntable (190), a transmission rod (170) is hinged at the end of the rotating arm (180), a sliding bar hole (211) is opened on a side of the movable frame (210) adjacent to the first end plate (120), the transmission rod (170) passes through the sliding bar hole (211), a driving block (160) is mounted on a side of the movable frame (210) adjacent to the second end plate (130), and the other end of the transmission rod (170) is hinged to the driving block (160).

3. A track change switching mechanism according to claim 1, characterized in that: Travel rollers (220) are installed on both sides of the mobile frame (210), the travel rollers (220) are slidably engaged with the fixed track (110), a limit strip (112) is installed in the fixed track (110), the travel rollers (220) are configured as butterfly wheels, and the limit strip (112) is slidably engaged with the middle of the travel rollers (220).

4. A track change switching mechanism according to claim 3, characterized in that: Both ends of the limit strip (112) are connected to relief air pipes (111), and the relief air pipes (111) are configured as rubber tubes with a plurality of diaphragms (1112) inside, and air holes (1113) are provided on the plurality of diaphragms (1112), and an air chamber (1111) is formed between two adjacent diaphragms (1112); When the walking roller (220) moves onto the relief air pipe (111), the walking roller (220) and the relief air pipe (111) are interference fit, and the overhead rail completes track switching.

5. The track switching mechanism according to claim 1, characterized in that: A first connecting seat (311) and a second connecting seat (321) are installed on the bottom side of the moving frame (210); the straight track (310) is installed on the bottom side of the first connecting seat (311); the curved track (320) is installed on the bottom side of the second connecting seat (321); first clamping blocks (312) for docking with the main track are installed on both sides of the straight track (310); and second clamping blocks (322) are installed on the sides of the curved track (320).

6. A track change switching mechanism according to claim 1, characterized in that: A double gear (620) is rotatably mounted on the side of the abutment block (410), a fixed rack (610) is fixedly mounted inside the first end plate (120), the double gear (620) meshes with the fixed rack (610), an output rack (630) is slidably mounted in the first end plate (120), the double gear (620) meshes with the output rack (630) at the same time, and the output rack (630) is connected to the push-pull plate (430).

7. A track change switching mechanism according to claim 6, characterized in that: A sliding block (640) is installed on the side of the output rack (630), and the sliding block (640) is slidably matched with the inner wall of the first end plate (120).

Images