Rail device and transfer trolley

Abstract

According to the rail device and the transfer trolley, the rail device comprises a base composed of a plurality of parallel supporting beams and assembling beams, an upper walking rail, a lower walking rail and a gear rail, the upper walking rail, the lower walking rail and the gear rail are assembled on the assembling beams and arranged in parallel, and the upper walking rail and the lower walking rail each comprise a bottom wall and a side wall provided with an inverted-L-shaped stopping part; the gear track comprises a meshing surface, a guide rail and a track base, the transfer trolley comprises the track device and the trolley capable of reciprocating on the track, the trolley comprises a walking frame, a first supporting frame, a second supporting frame and a stopping frame, the first supporting frame, the second supporting frame and the stopping frame are assembled on the walking frame, and a driving mechanism comprising a motor and a walking gear is assembled on the walking frame. The walking gear is rotationally connected with the motor and meshed with the gear track, and a first supporting wheel and a second supporting wheel matched with the upper walking track and the lower walking track are arranged on the walking frame. The rail device is arranged to be the single-gear rail, so that the cost is reduced, and the running stability of the transfer trolley is enhanced by arranging the supporting wheels on the walking frame.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic power station cleaning, and particularly relates to a track device and a transfer trolley. BACKGROUND

[0002] As a clean energy technology, photovoltaic power generation needs to be regularly cleaned on the surface of photovoltaic panels to ensure the power generation efficiency of the photovoltaic panels. For the cleaning of photovoltaic panels, various types of photovoltaic cleaning robots have been developed in the industry to improve the cleaning efficiency. However, photovoltaic cleaning robots can usually only move on photovoltaic panel arrays connected to each other, and cannot move to photovoltaic panel arrays that are not connected, so that in actual application, for photovoltaic panel arrays arranged in rows, a photovoltaic cleaning robot often needs to be configured on each row of photovoltaic panel arrays, which greatly increases the cost of photovoltaic cleaning. For this reason, there are also schemes in the prior art that use transfer trolleys to transfer photovoltaic cleaning robots, and the transfer trolleys usually adopt a multi-section folding structure to realize transfer from a low position to a high position. This kind of structure design usually has a relatively complex control mechanism, and the structure has many connections and cannot be disassembled after assembly, causing the transfer to be inconvenient.

[0003] In view of this, it is necessary to propose a new technical scheme to overcome the deficiencies in the prior art. SUMMARY

[0004] In view of the above technical problems, the present application provides a track device and a transfer trolley which are simple in structure and stable in operation.

[0005] To solve the above technical problems, the present application provides a track device for providing support for the reciprocating motion of an automated device, comprising a base, an upper walking track and a lower walking track assembled on the base and arranged in parallel, and a gear track located between the upper walking track and the lower walking track. The base comprises a plurality of support beams arranged in parallel and an assembly beam assembled on the support beams. The upper walking track, the lower walking track and the gear track are respectively assembled and fixed with the assembly beam. The upper walking track and the lower walking track each comprise a bottom wall and a side wall vertically extending upward from the bottom wall. The tail end of the side wall is bent inward to form a reverse L-shaped stop portion. The gear track comprises an engagement surface and guide rails located on both sides of the engagement surface. The engagement surface is provided with a gear hole. The guide rails comprise intersecting first and second guide surfaces. The second guide surface is connected with the track base, and the track base is assembled and fixed with the assembly beam.

[0006] Further, the included angle formed by the first guide surface and the second guide surface is an acute angle, and the track base and the engagement surface are arranged in parallel.

[0007] Further, the uplink track and the downlink track each include at least two track segments, the end portions of adjacent two track segments being connected by a track connector; the track connector is provided with a U-shaped accommodation cavity accommodating the end portion of the track segment, the bottom of the accommodation cavity is provided with a slot hole, the bottom wall of the uplink track and the bottom wall of the downlink track are each provided with an assembly hole, and a bolt passes through the assembly hole and the corresponding slot hole to connect the track connector and the corresponding track segment.

[0008] Further, the track base includes a transition portion connected with the second guide surface and an assembly portion parallel to the engagement surface, the assembly portion is provided with a plurality of assembly holes, the gear track includes at least two track segments, the end portions of adjacent two track segments are connected by a clamping seat, and the clamping seat is assembled and fixed with the assembly beam.

[0009] Further, the gear track is a hollow structure, the engagement surface and the guide rail jointly form a gear accommodation cavity, the track base and the gear accommodation cavity are connected by a connecting rib, and the connecting rib is connected with the second guide surface and the transition portion.

[0010] The application also provides a transfer vehicle for transferring a photovoltaic cleaning robot, which includes the track device and a trolley reciprocally movable on the track, the trolley including a walking frame, a first support frame and a second support frame assembled on the walking frame, a parking frame provided above the first support frame and the second support frame, a driving mechanism assembled on the walking frame, the driving mechanism including a motor and a walking gear, the walking gear being rotationally connected with the motor and engaged with the gear track, and a first support wheel adapted to the uplink track and a second support wheel adapted to the downlink track provided on the walking frame.

[0011] Further, the walking gear is provided on a fixing seat including an integrally formed bottom plate, a side plate and a top plate, the center of the bottom plate is provided with a hollow accommodation cavity, the walking gear is at least partially accommodated in the hollow accommodation cavity, the walking gear is provided with a gear shaft, a transfer sleeve is sleeved on the motor shaft of the motor, and the transfer sleeve is key-connected with the gear shaft.

[0012] Further, the parking frame is provided with a limiting mechanism limiting the position of the photovoltaic cleaning robot, and the walking frame is provided with a locking piece movably sleeved with the uplink track and / or the downlink track.

[0013] Further, the limiting mechanism includes a mounting seat assembled on the parking frame and an electric push rod, the electric push rod is assembled and fixed with the mounting seat, the photovoltaic cleaning robot is provided with a sleeving piece, and the electric push rod can be sleeved in the sleeving piece.

[0014] Further, the four corners of the bottom plate are provided with through holes, the through holes are symmetrically arranged on both sides of the hollow accommodating cavity, the driving mechanism further comprises a pulley arranged below the bottom plate, a rotating shaft of the pulley passes through the through hole and is fixed to the bottom plate, and a groove of the pulley is embedded with the guide rail.

[0015] Compared with the prior art, the rail device has the following beneficial effects: the rail device sets three-rail single gear rail structures, reduces the use amount of gear rails, reduces the cost of transfer trolleys, and increases the stability of the transfer trolleys through the setting of three rails. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Fig. 1 is a schematic diagram of the three-dimensional assembly of the rail device of an example embodiment.

[0017] Figure 2 Fig. 2 is a schematic diagram of the partial assembly of the rail device and the walking frame of an example embodiment.

[0018] Figure 3 Fig. 3 is a schematic diagram of the three-dimensional assembly of the rail device and the transfer trolley of an example embodiment.

[0019] Figure 4 Fig. 4 is a schematic diagram of the three-dimensional assembly of the rail device and the transfer trolley of an example embodiment. Figure 3 Fig. 5 is a partial enlarged schematic diagram of B in Fig. 4.

[0020] Figure 5 Fig. 6 is a schematic diagram of the three-dimensional assembly of the transfer trolley and the rail device of an example embodiment.

[0021] Figure 6 Fig. 7 is a schematic diagram of the working state of the transfer trolley of an example embodiment.

[0022] Figure 7 Fig. 8 is a schematic diagram of the three-dimensional assembly of the driving mechanism of an example embodiment.

[0023] Figure 8 Fig. 9 is a partial exploded schematic diagram of the driving mechanism of an example embodiment.

[0024] LIST OF REFERENCE NUMERALS

[0025] Transfer trolley 100

[0026] Upper walking rail 1, stop portion 10, base 11,

[0027] Support beam 12, assembly beam 13, rail connector 14,

[0028] Lower walking rail 2,

[0029] Gear rail 3, meshing surface 30, gear hole 301,

[0030] guide rail 31, first guide surface 310, second guide surface 311,

[0031] gear accommodating cavity 312, connecting rib 313, track bottom rail base 32,

[0032] transition portion 320, assembly portion 321, cartridge 33,

[0033] travel frame 4, first support frame 40, second support frame 41,

[0034] first support wheel 42, second support wheel 43, mounting plate 44,

[0035] third support frame 45, first sleeve 46, second sleeve 47,

[0036] docking frame 5, photovoltaic panel 50,

[0037] electric control unit 51, blocking column 52, limiting mechanism 6,

[0038] electric push rod 61, mounting seat 62, limiting locking block 63,

[0039] accommodating portion 631, locking hole 632, magnetic steel 64,

[0040] sleeve piece 7, driving mechanism 8, motor 81,

[0041] motor shaft 810, travel gear 82, shaft hole 820,

[0042] key groove 821, fixing seat 83, bottom plate 830,

[0043] hollow accommodating cavity 831, side plate 832, center hole 833,

[0044] top plate 834, power transmission shaft 835, limiting plate 836,

[0045] accommodating groove 837, through hole 838, gear shaft 84,

[0046] first accommodating groove 840, adapter cylinder 85, second accommodating groove 850,

[0047] key 86, pulley 88, locking piece 89,

[0048] assembly plate 9, limiting hole 90. DETAILED DESCRIPTION

[0049] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts should fall within the scope of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application.

[0050] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0051] In addition, it should be understood that although the terms first, second, third, etc. may be used in this application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the present application.

[0052] The terms used in the present application are merely for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited. It should also be understood that the term "and / or" used herein means and includes any or all possible combinations of one or more associated listed items.

[0053] In the present application, unless specifically defined otherwise and limited, the terms "mount", "connect", "connection", "fixed", and the like should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0054] In the present application, unless specifically defined otherwise and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0055] Please refer to Figures 1 to 8 As shown in the figure, a track device for providing support for reciprocating movement of automated equipment, comprising a base 11, an upper walking track 1, a lower walking track 2 and a gear track 3 assembled on the base 11 and arranged in parallel, the gear track 3 is located between the upper walking track 1 and the lower walking track 2. The base 11 comprises a plurality of support beams 12 arranged in parallel and an assembly beam 13 assembled on the support beam 12. The upper walking track 1, the lower walking track 2 and the gear track 3 are respectively assembled and fixed with the assembly beam 13 by means of bolts, the upper walking track 1 and the lower walking track 2 respectively comprise a bottom wall and a side wall vertically extending upward from the bottom wall, the tail end of the side wall is bent inward to form a reverse L-shaped stop 10, the gear track 3 comprises a meshing surface 30 and a guide rail 31 located on both sides of the meshing surface 30, the meshing surface 30 is provided with a gear hole 301, the guide rail 31 comprises intersecting first guide surface 310 and second guide surface 311, the second guide surface 311 is connected with the track base 32, and the track base 32 is assembled and fixed with the assembly beam 13. The track device of the present application is adapted to the gear power mechanism by arranging the gear track 3 between the upper walking track 1 and the lower walking track 2, compared with the traditional multi-gear track structure, the number of gear tracks is reduced, the cost of the track device is reduced, and the reverse L-shaped stop on the upper walking track and the lower walking track can ensure the reliability of the automated equipment and the track device after assembly.

[0056] The included angle between the first guide surface 310 and the second guide surface 311 is an acute angle to form a guide rail 31 with a larger contact surface, and the rail base 32 is arranged in parallel with the engagement surface 30.

[0057] In an embodiment, the upper and lower walkways 1 and 2 each include at least two rail segments, and the end portions of adjacent rail segments are connected by a rail connector 14. The rail connector 14 is provided with a U-shaped receiving cavity accommodating the end portions of the rail segments, and the bottom of the receiving cavity is provided with a slot hole. The bottom wall of the upper walkway 1 and the bottom wall of the lower walkway 2 are each provided with an assembly hole, and a bolt passes through the assembly hole and the corresponding slot hole to connect the rail connector 14 and the corresponding rail segment. The gap formed after the adjacent rail segments are connected by the rail connector 14 is less than 2 mm.

[0058] The rail base 32 includes a transition portion 320 connected to the second guide surface 311 and an assembly portion 321 parallel to the engagement surface. The assembly portion 321 is provided with a plurality of assembly holes. The gear rail 3 includes at least two rail segments, and the end portions of adjacent rail segments are connected by a clamping seat 33, which is assembled and fixed with the assembly beam 13. The gap formed after the end portions of adjacent rail segments are connected by the clamping seat 33 is less than 2 mm. In an embodiment, the clamping seat 33 is formed with a clamping cavity, which is formed by two opposite inclined surfaces and a bottom surface. The two inclined surfaces are respectively in contact with the transition portion 320, and the bottom surface is in contact with the assembly portion 321 to prevent the gear rail 3 from shaking during gear walking.

[0059] In order to reduce costs and facilitate rail transportation, the gear rail 3 is a hollow structure, and the engagement surface 30 and the guide rail 31 form a gear receiving cavity 312. The rail base 32 and the gear receiving cavity 312 are connected by a connecting rib 313, and the connecting rib 313 is connected to the second guide surface 311 and the transition portion 320. The connecting rib 313 divides the inner cavity of the rail gear into two chambers.

[0060] The application provides a transfer trolley 100 for transferring a photovoltaic cleaning robot, which comprises a track device and a trolley capable of reciprocating on the track. The trolley comprises a walking frame 4, a first support frame and a second support frame 41 assembled on the walking frame 4, and a parking frame 5 arranged above the first support frame and the second support frame 41. A driving mechanism 8 is assembled on the walking frame 4, and the driving mechanism 8 comprises a motor 81 and a walking gear 82, the walking gear 82 is rotationally connected with the motor 81 and is engaged with the gear track 3, and the walking frame 4 is further provided with a first support wheel 42 matched with the upper walking track 1 and a second support wheel 43 matched with the lower walking track 2. The first support wheel 42 and the second support wheel 43 have the same structure, and the first support wheel 42 is taken as an example for description: the first support wheel 42 has a wheel body and a blocking ring located on one side of the wheel body, the wheel body rolls along the upper walking track 1, and the blocking ring is located on the side close to the walking frame 4. The first support wheel 42 and the second support wheel 43 are assembled on the walking frame 4 through a mounting plate 44.

[0061] In an embodiment, the parking frame 5 is assembled and fixed with the first support frame through a first sleeve 46. The parking frame 5 is assembled and fixed with the second support frame 41 through a second sleeve 47, the height of the first support frame is greater than that of the second support frame 41, and the parking frame 5 and the walking frame 4 form an acute angle. Certainly, the size of the angle can be adjusted according to the actual use scene, the assembly height of the first sleeve 46 and the first support frame can be adjusted, and the assembly height of the second sleeve 47 and the second support frame 41 can also be adjusted. The first sleeve 46 and the second sleeve are respectively provided with a first assembly hole and a second assembly hole, and a first through hole and a second through hole arranged on the first support frame and the second support frame are assembled and fixed. As a preferred solution, the first sleeve and the second sleeve are respectively rectangular hollow structures, a plurality of first assembly holes are arranged on the first sleeve along the length direction, a plurality of second assembly holes are arranged on the second sleeve along the length direction, a plurality of first through holes are arranged on the first support frame along the length direction, and a plurality of second through holes are arranged on the second support frame along the length direction. The hole distance of the first assembly hole, the second assembly hole, the first through hole and the second through hole is the same to ensure that the parking frame 5 always remains in the same plane. The angle and height of the parking frame 5 can be adjusted through the position adjustment of the first sleeve 46 and the first support frame and the position adjustment of the second sleeve 47 and the second support frame 41, the overall structure is simple and convenient to operate, and it is convenient to disassemble and transport. In an embodiment, a third support frame 45 is arranged between the first support frame and the walking frame 4, and the third support frame 45, the first support frame and the walking frame 4 form a triangular frame structure to increase the stability and strength of the transfer trolley 100.

[0062] In order to ensure the stability of the parking, the parking rack 5 is assembled by horizontal beams and vertical beams, the limiting mechanism 6 is arranged on the horizontal beams, and in addition, a blocking column 52 can be further arranged on the parking rack 5, the blocking column 52 is located on the same straight line with the mounting seat 62 of the limiting mechanism 6, and the straight line is parallel to the vertical beam of the parking rack 5.

[0063] The parking rack 5 is provided with a limiting mechanism 6 for locking the position of the photovoltaic cleaning robot, and the walking rack 4 is provided with a locking piece 89 movably sleeved with the upper walking track 1 and / or the lower walking track 2. The locking piece 89 is assembled by a screw and a nut. Specifically, the walking rack 4 is assembled with a screw at a position opposite to the upper walking track 1 and / or the lower walking track 2, the end of the screw is at least partially inserted into the upper walking track 1 and / or the lower walking track 2 and assembled with a nut, and the upper walking track 1 and / or the lower walking track 2 limits the nut to prevent the screw from slipping out of the upper walking track 1 and / or the lower walking track 2.

[0064] The limiting mechanism 6 includes a mounting seat 62 assembled on the parking rack 5 and an electric push rod 61, the electric push rod 61 is assembled and fixed with the mounting seat 62, the photovoltaic cleaning robot is provided with a sleeving piece 7, and the electric push rod 61 can be sleeved in the sleeving piece 7.

[0065] In an embodiment of the present application, a limiting locking block 63 is arranged above the electric push rod 61. The limiting locking block 63 is assembled on the mounting seat 62, the limiting locking block 63 is formed with a receiving portion 631 accommodating the sleeving piece 7 and a locking hole matched with the electric push rod 61. The present application monitors the position of the photovoltaic cleaning robot through the induction of the magnet steel and the sensor, which has simple structure and high reliability, and the sleeving of the electric push rod and the sleeving piece enhances the safety of the whole operation of the photovoltaic cleaning robot and the transfer trolley after reaching the specified position; by further arranging the limiting locking block, the safety performance of the photovoltaic cleaning robot during the transfer process is enhanced, and accidents such as falling caused by vibration are avoided.

[0066] To enhance the smoothness of the operation of the driving mechanism 8, the walking gear 82 is arranged on a fixed seat 83, the fixed seat 83 comprises an integral bottom plate 830, side plates 832 and a top plate 834, the center of the bottom plate 830 is provided with a hollow accommodating cavity 831, the walking gear 82 is at least partially accommodated in the hollow accommodating cavity 831, the walking gear 82 is provided with a gear shaft 84, a transfer sleeve 85 is sleeved on the motor shaft of the motor 81, and the transfer sleeve 85 is in key connection with the gear shaft 84. The power of the motor 81 is transmitted to the walking gear 82 through key connection, so as to ensure the high output conversion efficiency of the motor 81. In an embodiment, the center of the side plate 832 is provided with a center hole 833, and the motor shaft 810 of the motor 81 passes through the center hole 833. The walking gear 82 is provided with a shaft hole 820, and the shaft hole 820 is provided with a key groove 821. The gear shaft 84 is provided with a first accommodating groove 840, the transfer sleeve 85 is provided with a second accommodating groove 850, the key 86 is accommodated in the first accommodating groove 840 and the second accommodating groove 850 and is clamped in the key groove 821. The key used in the application is preferably a flat key.

[0067] In an embodiment, the motor 81 is assembled on an assembly plate 9, the assembly plate 9 is provided with a limiting hole 90 corresponding to the center hole 833, a bearing is arranged in the limiting hole 90, the center line of the limiting hole 90 coincides with the center line of the center hole 833; the assembly plate 9 is assembled and fixed with the side plate 832 of the fixed seat 83, the top plate 834 of the fixed seat 83 is provided with a power transmission shaft 835, the walking frame 4 is provided with a limiting plate 836 for limiting the gear, the limiting plate 836 is provided with an accommodating groove 837, and the power transmission shaft 835 is accommodated in the accommodating groove 837. In an embodiment, the accommodating groove 837 is a racetrack type slot hole, the power transmission shaft 835 can have a certain amplitude of displacement in the accommodating groove 837 to adapt to the position offset of the driving mechanism 8 due to vibration, and the power transmission shaft drives the walking frame to operate.

[0068] The four corners of the bottom plate 830 are provided with through holes 838, the through holes 838 are symmetrically arranged on the two sides of the hollow accommodating cavity 831, and the driving mechanism 8 further comprises a pulley 88 arranged below the bottom plate 830, the rotating shaft of the pulley 88 passes through the through hole 838 and is fixed to the bottom plate 830, and the groove of the pulley 88 is embedded with the guide rail 31. The cooperation of the pulley 88 and the guide rail 31 can increase the stability of the operation of the driving mechanism 8 as a whole.

[0069] The motor 81 is a worm gear motor, and the driving mechanism 8 can omit the arrangement of the locking mechanism by using the self-locking function of the worm gear motor, thereby reducing the cost of the transfer trolley 100 as a whole.

[0070] In an embodiment, the first support frame is provided with an electric control unit 51, which at least includes a central controller, a communication module and a battery connected electrically. The parking frame 5 is provided with a photovoltaic panel 50 on the outside, which is electrically connected with the electric control unit 51, and the electric control unit 51 provides power for the driving mechanism 8. Specifically, the cable of the photovoltaic panel 50 is connected to an inverter, the inverter is connected with the battery of the electric control unit 51, and the motor 81 of the driving mechanism 8 is powered. By setting the photovoltaic panel and using the photovoltaic panel to generate electricity to provide power for the transfer trolley, the problem of self-power supply of the transfer trolley for outdoor operation is solved, and the adaptability of the product is enhanced.

[0071] In an embodiment, a protective shell is arranged outside the driving mechanism to avoid the driving mechanism from being eroded by rain and snow in the environment, so as to increase the service life of the product.

[0072] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the patent. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A track arrangement for providing support for reciprocating movement of an automated device, characterised in that, The track device comprises a base, an upper walking track, a lower walking track and a gear track assembled on the base and arranged in parallel, the gear track is located between the upper walking track and the lower walking track, the base comprises a plurality of support beams arranged in parallel and an assembly beam assembled on the support beam, the upper walking track, the lower walking track and the gear track are assembled and fixed with the assembly beam, the upper walking track and the lower walking track each comprise a bottom wall and a side wall vertically extending upward from the bottom wall, the tail end of the side wall is inwardly bent to form a reverse L-shaped stop portion, the gear track comprises an engagement surface and a guide rail located on both sides of the engagement surface, the engagement surface is provided with a gear hole, the guide rail comprises intersecting first and second guide surfaces, the second guide surface is connected with a track base, and the track base is assembled and fixed with the assembly beam.

2. The track arrangement of claim 1, wherein, The included angle formed by the first guide surface and the second guide surface is an acute angle, and the track base and the engagement surface are arranged in parallel.

3. The track arrangement of claim 2, wherein, The upper walking track and the lower walking track each comprise at least two track segments, the end portions of adjacent two track segments are connected through a track connector, the track connector is provided with a U-shaped accommodation cavity for accommodating the end portion of the track segment, the bottom of the accommodation cavity is provided with a slot hole, the bottom wall of the upper walking track and the bottom wall of the lower walking track are each provided with an assembly hole, and a bolt passes through the assembly hole and the corresponding slot hole to connect the track connector with the corresponding track segment.

4. A track arrangement according to any one of claims 1 to 3, characterized in that The track base comprises a transition portion connected with the second guide surface and an assembly portion parallel to the engagement surface, the assembly portion is provided with a plurality of assembly holes, the gear track comprises at least two track segments, the end portions of adjacent two track segments are connected through a clamping seat, and the clamping seat is assembled and fixed with the assembly beam.

5. The track arrangement of claim 4, wherein, The gear track is a hollow structure, the engagement surface and the guide rail jointly form a gear accommodation cavity, the track base is connected with the gear accommodation cavity through a connecting rib, and the connecting rib is connected with the second guide surface and the transition portion.

6. A transfer vehicle for the transfer of a photovoltaic cleaning robot, characterized in that The track device comprises a track device and a trolley capable of reciprocating on the track, the trolley comprises a walking frame, a first support frame and a second support frame assembled on the walking frame, a stopping frame is arranged above the first support frame and the second support frame, a driving mechanism is assembled on the walking frame, the driving mechanism comprises a motor and a walking gear, the walking gear is rotationally connected with the motor and engages with the gear track, and the walking frame is provided with a first support wheel matched with the upper walking track and a second support wheel matched with the lower walking track.

7. The transfer cart of claim 6, wherein, The walking gear is arranged on a fixing seat, the fixing seat comprises an integrally formed bottom plate, a side plate and a top plate, the center of the bottom plate is provided with a hollow accommodation cavity, the walking gear is at least partially accommodated in the hollow accommodation cavity, the walking gear is provided with a gear shaft, a transfer sleeve is sleeved on the motor shaft of the motor, and the transfer sleeve is key-connected with the gear shaft.

8. The transfer cart of claim 7, wherein, A limiting mechanism for locking the position of a photovoltaic cleaning robot is arranged on the stopping frame, and a lock piece movably sleeved with the upper walking track and / or the lower walking track is arranged on the walking frame.

9. The transfer cart of claim 8, wherein, The limiting mechanism comprises a mounting base assembled to the parking rack and an electric push rod, the electric push rod is assembled and fixed with the mounting base, a sleeve connector is arranged on the photovoltaic cleaning robot, and the electric push rod can be sleeved and inserted into the sleeve connector.

10. The transfer cart of any one of claims 7 to 9, wherein, Four corners of the bottom plate are provided with through holes, the through holes are symmetrically arranged on two sides of the hollow accommodating cavity, the driving mechanism further comprises a pulley arranged below the bottom plate, a rotating shaft of the pulley penetrates through the through hole and is fixed to the bottom plate, and a groove of the pulley is embedded with the guide rail.

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