A multi-branch flexible automatic track-changing device

Abstract

This invention belongs to the field of single-track technology, and particularly relates to a multi-branch flexible automatic track-changing device, including a support frame and a drive device, a main track joint, a flexible connecting track, and multiple branch track joints mounted on the support frame. The flexible connecting track includes a branch fixing joint for engaging with the branch track joints and a flexible connecting member for connecting with the main track joint. The drive device is used to drive the branch fixing joints to move. The beneficial effects of this invention are: the branch track joints and the main track joints are connected through the branch fixing joints and the flexible connecting members. When the mountain monorail orchard conveyor travels to the switch point for route switching, because each first connecting block of the flexible connecting member is connected to the adjacent second connecting block through transition teeth, the flexible connecting member can bend and deform along its length in the horizontal direction. The flexible connecting track (branch fixing joints, flexible connecting members) and the main track form a smooth arc-straight trajectory, helping the mountain monorail orchard conveyor to pass through the switch point smoothly and steadily.

Description

Technical Field

[0001] This invention belongs to the field of single-track technology, and particularly relates to a multi-branch flexible automatic track-changing device. Background Technology

[0002] Mountain monorail orchard conveyors are used for transporting harvested fruit in hilly orchards, transporting fertilizers and pesticides during daily management, and transporting small tillers, pesticides, and weeders. The single-track system can be installed in mountainous and hilly areas, in orchards with steep curves and slopes. The single-track system consists of square steel pipes and racks.

[0003] A turnout is a track connection device that allows a monorail orchard conveyor in a mountainous area to switch from one track to another, and it is also one of the weakest links in a single-track system. Existing turnout switching devices typically have connecting rails, with each end of the connecting rail connecting to the main track and multiple branch tracks. The connecting rail and the main track form an abrupt, angled track, preventing the monorail orchard conveyor from passing smoothly and steadily when it reaches the turnout. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-branch flexible automatic track-changing device to solve the problem in the prior art that mountain monorail orchard conveyors cannot pass smoothly and stably when they reach the switch points.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A multi-branch flexible automatic track-changing device is characterized by comprising a support frame and a drive device, a main track joint, a flexible connecting track, and multiple branch track joints mounted on the support frame. The flexible connecting track includes a branch fixing joint and a flexible connector. The length of the flexible connector is 50%-95% of the length of the flexible connecting track. A first end of the flexible connecting track is fixedly connected to the main track joint via the flexible connector. A second end of the flexible connecting track is connected to one of the branch track joints via the branch fixing joint. The drive device drives the branch fixing joint to move from a position connected to the current branch track joint to a position connected to another branch track joint.

[0007] The flexible connector includes several first connecting blocks, second connecting blocks, and transition teeth. The first and second connecting blocks are alternately and sequentially connected along the length of the flexible connector. The transition teeth are used to connect the first connecting blocks to adjacent second connecting blocks in series. The first connecting blocks have upper and lower connecting plates on their respective sides for connecting to the second connecting blocks, forming an insertion groove between them. The second connecting blocks have insertion plates on their respective sides for connecting to the first connecting blocks, and the insertion plates on the second connecting blocks are embedded in the insertion grooves of adjacent first connecting blocks. The upper connecting plate has an upper connecting hole for the transition teeth to pass through, the lower connecting plate has a lower connecting hole for the transition teeth to pass through, and the insertion plate has a middle connecting hole for the transition teeth to pass through. Each transition tooth passes through the corresponding upper, middle, and lower connecting holes, thereby connecting the first connecting block to the adjacent second connecting block in series.

[0008] The transition tooth includes a pin part and a toothed part. The pin part is inserted into the upper connecting hole, the middle connecting hole, and the lower connecting hole. The toothed part is located at the bottom of the first connecting block. The toothed part is used to mesh with the wheel of the mountain monorail orchard conveyor. The distance between the toothed parts of two adjacent transition teeth is equal to the distance between two adjacent peaks of the rack on the single track.

[0009] The beneficial effects of the multi-branch flexible automatic track-changing device provided by the present invention are as follows: Compared with the prior art, the branch track joint and the main track joint are connected by a flexible connecting track. The flexible connecting track includes a branch fixed joint and a flexible connecting member that can be bent and deformed. When the mountain monorail orchard conveyor travels to the turnout to switch routes, the drive device drives the branch fixed joint to move, so that the branch fixed joint moves from the position opposite to the current branch track joint to the position opposite to another branch track joint. Since each first connecting block of the flexible connecting member is connected to the adjacent second connecting block through transition teeth, the flexible connecting member can be bent and deformed in the horizontal direction along its length direction. The flexible connecting track (branch fixed joint, flexible connecting member) and the main track form a soft arc-straight trajectory, which helps the mountain monorail orchard conveyor to pass through the turnout smoothly.

[0010] In one embodiment, the support includes a base and multiple columns disposed on the base, the columns being used to support the main track joint and each sub-track joint.

[0011] In one embodiment, the drive device includes a bearing housing, a bearing, a push shaft, a housing, a turntable, a motor, and an arc-shaped rack. The bearing housing is fixedly connected to the bifurcation fixed joint, the outer ring of the bearing is fixedly connected to the bearing housing, the upper end of the push shaft is fitted into the inner ring of the bearing, the lower end of the push shaft is fixedly connected to the housing, the two ends of the turntable are rotatably connected to the housing, the turntable is provided with multiple levers spaced circumferentially, the turntable and the arc-shaped rack are connected by the levers provided on the turntable and the troughs provided on the arc-shaped rack, the output shaft of the motor is fixedly connected to the turntable, the motor drives the turntable to rotate, causing the housing, push shaft, bearing, bearing housing and bifurcation fixed joint to move along the length direction of the arc-shaped rack, so that the bifurcation fixed joint moves from the position opposite to the current sub-track joint to the position opposite to another sub-track joint.

[0012] In one embodiment, the system also includes a main control circuit board and multiple contact sensors, which are respectively mounted on multiple sub-rail connectors. The main control circuit board is installed inside the housing, and the drive device and the contact sensors are electrically connected to the main control circuit board.

[0013] Furthermore, it also includes a control terminal, which is wirelessly connected to the main control circuit board to control the drive device, thereby driving the bifurcation fixed joint to move. Attached Figure Description

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a schematic diagram of the structure of the multi-branch flexible automatic track-changing device according to an embodiment of the present invention;

[0016] Figure 2 for Figure 1 A schematic diagram of the multi-branched flexible automatic track-changing device from another perspective.

[0017] Figure 3 This is a schematic diagram of the flexible connecting track of the multi-branch flexible automatic track changing device according to an embodiment of the present invention;

[0018] Figure 4 for Figure 3 An exploded view of the flexible connecting track shown.

[0019] Figure 5 This is a schematic diagram of the structure of the first connecting block, the second connecting block, and the transition teeth of the flexible connector used in the embodiments of this application;

[0020] Figure 6 This is a schematic diagram of the flexible connection track route switching of the multi-branch flexible automatic track changing device according to an embodiment of the present invention. Figure 1 ;

[0021] Figure 7 This is a schematic diagram of the flexible connection track route switching of the multi-branch flexible automatic track changing device according to an embodiment of the present invention. Figure 2 ;

[0022] Figure 8 This is a schematic diagram of the drive device of the multi-branch flexible automatic track-changing device according to an embodiment of this application.

[0023] Figure 9 This is a schematic diagram of the contact sensor and the bifurcation fixing joint of the multi-branch flexible automatic track changing device according to an embodiment of this application.

[0024] Figure 10 This is a schematic diagram showing the connection between the main control circuit board, control terminal, contact sensor, and drive device of the multi-branch flexible automatic track changing device according to an embodiment of this application.

[0025] Figure 11 This is a schematic diagram of the flexible connector, the branch fixing joint, and the main rail joint of the multi-branch flexible automatic track changing device according to an embodiment of this application.

[0026] Figure 12 This is a schematic diagram of the transition teeth of the flexible connector in the multi-branch flexible automatic track changing device according to an embodiment of this application.

[0027] Figure 13 This is a schematic diagram of a single-track structure in the prior art.

[0028] The following are the labeling elements in the figure:

[0029] 1. Bracket; 11. Column; 12. Base;

[0030] 2. Main rail connector; 22. Second insertion block; 220. Second insertion hole;

[0031] 3. Rail joint;

[0032] 4. Drive unit; 41. Push shaft; 42. Bearing; 43. Bearing housing; 44. Motor; 45. Housing; 46. Arc rack; 47. Turntable; 471. Lever;

[0033] 5. Flexible connecting track; 51. First connecting block; 510. Insertion slot; 511. Upper connecting plate; 5110. Upper connecting hole; 512. Lower connecting plate; 5120. Lower connecting hole; 52. Second connecting block; 521. Insertion plate; 5210. Middle connecting hole; 53. Transition tooth; 530. Slot; 531. Pin part; 532. Toothed part; 533. Snap ring; 534. Limiting flange;

[0034] 6. Branching fixed joint; 61. First plug-in block; 610. First plug-in hole; 7. Contact sensor; 81. Rack; 82. Square steel pipe. Detailed Implementation

[0035] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0036] In the description of this invention, 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 invention 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 invention.

[0037] Furthermore, the terms "first," "second," etc., 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 with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] like Figures 1-2As shown, the multi-branch flexible automatic track-changing device provided by the present invention includes a support 1 and a drive device 4, a main track joint 2, a flexible connecting track, and multiple branch track joints 3 mounted on the support 1. The main track joint 2 is used to connect to the main track, and the branch track joints 3 are respectively connected to each branch track. The main track (not shown in the figure), the main track joint 2, the branch track joints 3, and the branch tracks (not shown in the figure) are part of a single-track system, and their structures are the same as the main body of the single-track system. The structure of the single-track system is as follows: Figure 13 As shown, it includes a square steel pipe 82 and a rack 81.

[0040] The flexible connecting track includes a bifurcation fixing joint 6 and a flexible connector 5. The length of the flexible connector 5 is 50%-95% of the length of the flexible connecting track. The first end of the flexible connecting track is connected to the main track joint 2 via the flexible connector 5, and the second end of the flexible connecting track is connected to one of the branch track joints 3 via the bifurcation fixing joint 6. (See reference...) Figure 1 , Figure 6 and Figure 7 The driving device 4 is used to drive the bifurcation fixed joint 6 to move, so that the bifurcation fixed joint 6 moves from the position opposite to the current branch track joint 3 to the position opposite to another branch track joint 3.

[0041] The structure of the bifurcation fixed joint 6 is the same as that of the single track, including a square steel pipe and a rack.

[0042] See Figures 3 to 5 The flexible connector 5 includes several first connecting blocks 51, second connecting blocks 52, and transition teeth 53. The first connecting blocks 51 and second connecting blocks 52 are alternately and sequentially connected along the length of the flexible connector 5. The transition teeth 53 are used to connect the first connecting blocks 51 to adjacent second connecting blocks 52 in series. The first connecting blocks 51 are provided with upper connecting plates 511 and lower connecting plates 512 on both sides for connecting with the second connecting blocks 52, and an insertion groove 510 is formed between the upper connecting plates 511 and the lower connecting plates 512. The second connecting blocks 52 are provided with upper connecting plates 511 and lower connecting plates 512 on both sides for connecting with the first connecting blocks 51. There is a plug-in plate 521. The plug-in plate on the second connecting block 521 is embedded in the plug-in groove 510 of the adjacent first connecting block 51. The upper connecting plate 511 is provided with an upper connecting hole 5110 for the transition tooth to pass through. The lower connecting plate 512 is provided with a lower connecting hole 5120 for the transition tooth 53 to pass through. The plug-in plate 52 is provided with a middle connecting hole 5210 for the transition tooth 53 to pass through. Each transition tooth 53 passes through the corresponding upper connecting hole 5110, middle connecting hole 5210, and lower connecting hole 5120, thereby connecting the first connecting block 51 and the adjacent second connecting block 52 in series.

[0043] The transition tooth 53 includes a pin portion 531 and a toothed portion 532. The pin portion 531 is inserted into the upper connecting hole 5110, the middle connecting hole 5210, and the lower connecting hole 5120, and the toothed portion 532 is located at the bottom of the first connecting block 51.

[0044] Toothed section 532 is used to mesh with the wheels of a mountain monorail orchard conveyor, see reference. Figure 3 and Figure 13 The distance L1 between the toothed portions 532 of two adjacent transition teeth 53 on the flexible connector 5 is equal to the distance L2 between two adjacent crests of the rack 81 on the single track. Thus, when the mountain monorail orchard conveyor travels to the flexible connector 5, the toothed portions 532 of the multiple transition teeth 53 on the flexible connector 5 can mesh with the wheels of the mountain monorail orchard conveyor. The multiple transition teeth 53 can function similarly to the rack 81 on the single track; the main body of the flexible connector, composed of multiple first connecting blocks 51 and multiple second connecting blocks 52, can function similarly to the square steel pipe 82 on the single track.

[0045] Compared with the prior art, when the bifurcation fixed joint 6 of the present invention is connected to any one of the track joints 3, because the bifurcation fixed joint 6 is connected to the main track 2 by a flexible connecting member 5 that can be bent and deformed, and each first connecting block 51 of the flexible connecting member 5 is connected to the adjacent second connecting block 52 through the transition teeth 53, the flexible connecting member 5 can be bent and deformed in the horizontal direction along its length direction, and the flexible connecting track (bifurcation fixed joint 6, flexible connecting member 5) and the main track form a soft arc-straight track, so when the mountain monorail orchard conveyor travels to the switch, it can pass smoothly and steadily.

[0046] The beneficial effects of the multi-branch flexible automatic track-changing device provided by the present invention are as follows: the branch track joint 3 and the main track joint 2 are connected by a flexible connecting track. The flexible connecting track includes a branch fixed joint 6 and a flexible connecting member 5 that can be bent and deformed. When the mountain monorail orchard conveyor travels to the turnout to switch routes, the drive device 4 drives the branch fixed joint 6 to move so that the branch fixed joint 6 moves from the position opposite to the current branch track joint 3 to the position opposite to another branch track joint 3. Since each of the first connecting blocks 51 of the flexible connecting member 5 is connected to the adjacent second connecting block 52 through the transition teeth 53, the flexible connecting member 5 can be bent and deformed in the horizontal direction along its length direction. The flexible connecting track (branch fixed joint 6, flexible connecting member 5) and the main track form a soft arc-straight trajectory, which helps the mountain monorail orchard conveyor to pass through the turnout smoothly.

[0047] In one embodiment, see [reference] Figure 1 and Figure 2The support 1 includes a base 12 and multiple columns 11 mounted on the base 12. The multiple columns 11 are used to support the main track joint 2 and each sub-track joint 3 respectively.

[0048] In one embodiment, see [reference] Figure 12 The transition tooth 53 also includes a retaining ring 533. A retaining ring, also called a retaining ring or snap ring, is a type of fastener that prevents axial movement of parts on the shaft. The pin portion 531 of the transition tooth has an annular limiting flange 534 at the end away from the toothed portion 532. An annular groove 530 is formed between the pin portion 531 and the toothed portion 532, and the retaining ring 533 is fitted into the groove 530. During assembly, the retaining ring 533 is fitted over the toothed portion 532 and slides upwards into the groove 530. The limiting flange 534 and the retaining ring 533 act as limiting elements, preventing the components on the flexible connector 5 (first connecting block 51, second connecting block 52, transition tooth 53) from loosening and falling off.

[0049] In one embodiment, see [reference] Figure 2 and Figure 8 The driving device 4 includes a bearing housing 43, a bearing 42, a push shaft 41, a housing 45, a turntable 47, a motor 44, and an arc-shaped rack 46. The bearing housing 43 is fixedly connected to the bifurcated fixed joint 6. The outer ring of the bearing 42 is fixedly connected to the bearing housing 43. The upper end of the push shaft 41 is fitted into the inner ring of the bearing 42, and the lower end of the push shaft 41 is fixedly connected to the housing 45. The two ends of the turntable 47 are rotatably connected to the housing 45. The turntable 47 is provided with a plurality of levers 471 spaced circumferentially. The outer diameter of the levers 471 is equal to that of the arc-shaped rack 46. The trough curvature of the rack 46 is matched. The turntable 47 and the arc rack 46 are connected by the lever 471 set on the turntable 47 and the trough set on the arc rack 46. The output shaft of the motor 44 is fixedly connected to the turntable. The motor 44 drives the turntable 47 to rotate, so that the housing 45, the push shaft 41, the bearing 42, the bearing seat 43 and the bifurcation fixed joint 6 move along the length direction of the arc rack 46, so that the bifurcation fixed joint 6 moves from the position opposite to the current sub-track joint 3 to the position opposite to the other sub-track joint 3.

[0050] The structure of the arc-shaped rack 46 can be referenced from the rack structure of a single-track rail. The distance between two adjacent troughs on the arc-shaped rack 46 is equal to the distance between two adjacent levers 471 on the turntable 47. When the turntable 47 rotates, the levers 471 on the turntable 47 mesh with the troughs on the arc-shaped rack 46 in sequence, and the turntable 47 crawls along the length of the arc-shaped rack 45.

[0051] In one embodiment, see [reference] Figure 2 and Figure 9 , Figure 10The multi-branch flexible automatic track-changing device also includes a main control circuit board and multiple contact sensors 7. The contact sensors 7 are respectively installed on multiple branch track joints 3. The main control circuit board is installed inside the housing 45. The drive unit (motor 44) and the contact sensors 7 are electrically connected to the main control circuit board. The contact sensors 7 can be technologically mature contact sensors, which are sensors used to detect whether an object is in contact. Their principle is based on capacitance changes. When the branch fixed joint 6 approaches or touches the contact sensor 7, the capacitance between the branch fixed joint 6 and the contact sensor 7 changes. The contact sensor 7 sends the change in output electrical signal to the main control circuit board. Specifically, the contact sensor 7 consists of two electrodes, one of which is the contact sensor 7 itself, which is located on the corresponding branch track joint 3, and the other electrode is located on the branch fixed joint 6. When there is no contact, the capacitance between the two electrodes is very small. However, when the bifurcation fixed joint 6 approaches or touches the contact sensor 7, the capacitance between the bifurcation fixed joint 6 and the contact sensor 7 will increase. This will cause a change in the output electrical signal of the contact sensor 7. By detecting the change in the output electrical signal, it can be determined whether the bifurcation fixed joint 6 has moved to the contact sensor 7 of the set track joint 3, thereby determining whether the bifurcation fixed joint 6 has moved to the position opposite to the set track joint 3.

[0052] Furthermore, in this embodiment, a control terminal is also included. The control terminal is wirelessly connected to the main control circuit board to control the drive device 4, thereby driving the bifurcation fixing joint 6 to move from a position opposite to the current branch track joint 3 to a position opposite to another branch track joint 3. The control terminal and the main control circuit board can establish a wireless communication connection using mature technologies such as WIFI, 4G, and Bluetooth. The control terminal has a command input module and a wireless communication module; the control terminal establishes a communication connection with the main control circuit board through the wireless communication module, and controls the drive device 4 to move the bifurcation fixing joint 6 through the command input module. The control terminal is carried by the operator and can be a mobile phone, PC, tablet computer, remote control, etc.

[0053] Multiple track joints 3 lead to different mountains or different locations on the same mountain. The control terminal (mobile phone, PC, tablet, remote control, etc.) is wirelessly connected to the main control circuit board. The route must be switched in advance before the mountain monorail orchard conveyor reaches the switch. Specifically, the staff can stand next to the switch and press the button on the remote control to switch the route.

[0054] In one embodiment, see [reference] Figure 11The two ends of the flexible connector 5 are connected to the bifurcation fixing joint 6 and the main track joint 2 respectively through the following structures: the end of the flexible connector 5 connected to the bifurcation fixing joint 6 is provided with a first connecting block 51, the bifurcation fixing joint 6 is provided with a first plug-in block 61, the first plug-in block 61 is provided with a first plug-in hole 610, and the transition tooth 53 passes through the corresponding upper connecting hole 5110, the first plug-in hole, and the lower connecting hole 5120, thereby connecting the first connecting block 51 on the flexible connector 5 and the first plug-in block 61 on the bifurcation fixing joint 6 in series; the end of the flexible connector 5 connected to the main track joint 2 is provided with the first connecting block 51, the main track joint 2 is provided with a second plug-in block 22, the second plug-in block 22 is provided with a second plug-in hole 220, and the transition tooth 53 passes through the corresponding upper connecting hole 5110, the second plug-in hole 220, and the lower connecting hole 5120, thereby connecting the first connecting block 51 on the flexible connector 5 and the second plug-in block 22 on the main track joint 2 in series. This embodiment only illustrates one connection method between the flexible connector 5 and the bifurcation fixing joint 6 and the main track joint 2. The flexible connector 5 can also be connected to the bifurcation fixing joint 6 and the main track joint 2 through other structures.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-branch flexible automatic track-changing device, characterized in that, The system includes a support frame, a drive unit mounted on the support frame, a main track joint, a flexible connecting track, and multiple branch track joints. The flexible connecting track includes a bifurcation fixing joint and a flexible connector. The length of the flexible connector is 50%-95% of the length of the flexible connecting track. The first end of the flexible connecting track is connected to the main track joint via the flexible connector, and the second end of the flexible connecting track is connected to one of the branch track joints via the bifurcation fixing joint. The drive unit drives the bifurcation fixing joint to move from a position connected to the current branch track joint to a position connected to another branch track joint. The flexible connector includes several first connecting blocks, second connecting blocks, and transition teeth. The first and second connecting blocks are alternately and sequentially connected along the length of the flexible connector. The transition teeth are used to connect the first connecting blocks to adjacent second connecting blocks in series. The first connecting blocks have upper and lower connecting plates on their respective sides for connecting to the second connecting blocks, forming an insertion groove between them. The second connecting blocks have insertion plates on their respective sides for connecting to the first connecting blocks, and the insertion plates on the second connecting blocks are embedded in the insertion grooves of adjacent first connecting blocks. The upper connecting plate has an upper connecting hole for the transition teeth to pass through, the lower connecting plate has a lower connecting hole for the transition teeth to pass through, and the insertion plate has a middle connecting hole for the transition teeth to pass through. Each transition tooth passes through the corresponding upper, middle, and lower connecting holes, thereby connecting the first connecting block to the adjacent second connecting block in series. The transition tooth includes a pin part and a toothed part. The pin part is inserted into the upper connecting hole, the middle connecting hole, and the lower connecting hole. The toothed part is located at the bottom of the first connecting block. The toothed part is used to mesh with the wheel of the mountain monorail orchard conveyor. The distance between the toothed parts of two adjacent transition teeth is equal to the distance between two adjacent peaks of the rack on the single track.

2. The multi-branch flexible automatic track-changing device according to claim 1, characterized in that, The support includes a base and multiple columns mounted on the base, which are used to support the main track joint and each sub-track joint.

3. The multi-branch flexible automatic track-changing device according to claim 1, characterized in that, The drive device includes a bearing housing, a bearing, a push shaft, a housing, a turntable, a motor, and an arc-shaped rack. The bearing housing is fixedly connected to the bifurcation fixed joint, and the outer ring of the bearing is fixedly connected to the bearing housing. The upper end of the push shaft is fitted into the inner ring of the bearing, and the lower end of the push shaft is fixedly connected to the housing. The two ends of the turntable are rotatably connected to the housing. The turntable is provided with multiple levers spaced circumferentially. The turntable and the arc-shaped rack are connected by the levers on the turntable and the troughs on the arc-shaped rack. The output shaft of the motor is fixedly connected to the turntable. The motor drives the turntable to rotate, causing the housing, push shaft, bearing, bearing housing, and bifurcation fixed joint to move along the length of the arc-shaped rack, so that the bifurcation fixed joint moves from the position opposite to the current track joint to the position opposite to another track joint.

4. The multi-branch flexible automatic track-changing device according to claim 1, characterized in that, It also includes a main control circuit board and multiple contact sensors. The multiple contact sensors are respectively installed on multiple sub-rail connectors. The main control circuit board is installed inside the housing. The drive unit and the contact sensors are electrically connected to the main control circuit board.

5. The multi-branch flexible automatic track-changing device according to claim 4, characterized in that, It also includes a control terminal, which is wirelessly connected to the main control circuit board to control the drive device, thereby driving the bifurcation fixed joint to move.

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