A passenger car body traction device

Abstract

The present invention relates to the technical field of bus manufacturing, and specifically to a bus body traction device, comprising: a rectangular vehicle plate, a connecting mechanism, a fixing mechanism, a transmission mechanism and a driving motor; the connecting mechanism is arranged at one end of the vehicle plate in the length direction; the fixing mechanism comprises a first fixing assembly, a second fixing assembly and a third fixing assembly; the first fixing assembly and the second fixing assembly can slide on the vehicle plate along the width direction of the vehicle plate; the third fixing assembly is arranged at one end of the vehicle plate away from the connecting mechanism; the driving motor is connected to the first fixing assembly, the second fixing assembly, the third fixing assembly and the connecting mechanism through the transmission mechanism and drives them to extend and retract. The completed bus body can be directly transported to the outside of the factory for unified management and loading through the above traction device, which solves the collision risk caused by trucks entering the factory and avoids the problem of occupying the passage and affecting normal production. The fixing mechanism is arranged on the vehicle plate, which can improve the stability of the bus body and improve safety.

Description

Technical Field

[0001] The present invention relates to the technical field of bus manufacturing, and in particular to a bus body traction device. Background Art

[0002] Some buses are exported in KD (knocked down) state to save costs. The body in KD state is generally not equipped with front and rear axles and tires, so it cannot rely on its own power and can only be transported by a crane in the production workshop.

[0003] However, when using a crane to transfer a car body in KD state, due to the small space in the factory, collision accidents are prone to occur while the vehicle is driving. At the same time, it occupies material and personnel passages, affecting the normal production activities of the enterprise. Summary of the Invention

[0004] (1) The problem to be solved by the present invention is that when a vehicle body in KD state is transported by a traveling crane, collisions are likely to occur during driving due to the small space in the factory. At the same time, the vehicle occupies material and personnel passages, affecting the normal production activities of the enterprise.

[0005] (2) Technical solution

[0006] In order to solve the above technical problems, an embodiment of the present invention provides a bus body towing device, which is towed by a forklift, wherein the forklift includes a fork arm, and a groove is provided on the fork arm;

[0007] The bus body traction device comprises: a vehicle plate, a connecting mechanism, a fixing mechanism, a transmission mechanism and a drive motor;

[0008] The vehicle plate is rectangular, and universal wheels are provided at the four corners of the vehicle plate;

[0009] The connecting mechanism is telescopically arranged at one end of the vehicle plate in the length direction;

[0010] The fixing mechanism includes a first fixing assembly, a second fixing assembly, and a third fixing assembly; the first fixing assembly and the second fixing assembly are arranged on the vehicle plate at intervals along the width direction of the vehicle plate, and the first fixing assembly and the second fixing assembly are retractably arranged on the vehicle plate and can slide on the vehicle plate along the width direction of the vehicle plate; the third fixing assembly is retractably arranged at an end of the vehicle plate away from the connecting mechanism;

[0011] The drive motor is connected to the first fixing assembly, the second fixing assembly, the third fixing assembly and the connecting mechanism through the transmission mechanism, and drives the first fixing assembly, the second fixing assembly and the third fixing assembly to synchronously extend or retract the vehicle plate, and when the connecting mechanism extends out of the vehicle plate, it can be connected to the groove; when the first fixing assembly, the second fixing assembly and the third fixing assembly extend out of the vehicle plate, they can fix the bus body.

[0012] Furthermore, the forklift has two fork arms, each of which is provided with a groove;

[0013] The connecting mechanism includes two connecting shafts. A sliding hole is provided on the vehicle plate. The connecting shaft is slidably arranged in the sliding hole, and the connecting shaft can extend out of or retract into the sliding hole.

[0014] Furthermore, the first fixing assembly includes a first base and two first fixing shafts; the first base is provided on the vehicle plate and can slide on the vehicle plate along the width direction of the vehicle plate; the two first fixing shafts are slidably provided on the base, and the two first fixing shafts are spaced apart along the width direction of the vehicle plate; a first opening is provided on the vehicle plate, and the first opening is a long hole and extends along the width direction of the vehicle plate; the two first fixing shafts are both connected to the transmission mechanism, and the drive motor drives the two first fixing shafts to slide on the first base through the transmission mechanism, so that the two first fixing shafts can extend from the first opening or retract into the vehicle plate;

[0015] The second fixing assembly includes a second base and two second fixing shafts; the second base is provided on the vehicle plate and can slide on the vehicle plate along the width direction of the vehicle plate; the two second fixing shafts are slidably provided on the base, and the two second fixing shafts are spaced apart along the width direction of the vehicle plate; a second opening is provided on the vehicle plate, and the second opening is a long hole and extends along the width direction of the vehicle plate; the two second fixing shafts are both connected to the transmission mechanism, and the drive motor drives the two second fixing shafts to slide on the second base through the transmission mechanism, so that the two second fixing shafts can extend from the second opening or retract into the vehicle plate;

[0016] The third fixing assembly includes a third base and two third fixed shafts; the third base is arranged on the vehicle plate; the two third fixed shafts are slidably arranged on the base, and the two third fixed shafts are spaced apart along the length direction of the vehicle plate; a third opening corresponding to the two third fixed shafts is provided on the vehicle plate; the two third fixed shafts are both connected to the transmission mechanism, and the drive motor drives the two third fixed shafts to slide on the third base through the transmission mechanism, so that the two third fixed shafts can extend out of or retract into the vehicle plate from the corresponding third openings.

[0017] Furthermore, a slideway extending along the width direction of the vehicle plate is provided on the vehicle plate, and the first base and the second base are slidably arranged in the slideway.

[0018] Furthermore, the slideway is a long hole opened on the vehicle plate.

[0019] Furthermore, the first fixed shaft, the second fixed shaft and the third fixed shaft are all covered with protective pads made of flexible material.

[0020] Furthermore, the first base includes a first connecting rod and a first bottom plate; the first connecting rod is a screw rod, and two first nuts are screwed on the first connecting rod. The first connecting rod is inserted into the slideway through the first nut located above, and is locked or loosened in the slideway by the cooperation of the two first nuts; two first fixed shafts are slidably provided on the first bottom plate;

[0021] The second base includes a second connecting rod and a second bottom plate; the second connecting rod is a screw rod, and two second nuts are screwed on the second connecting rod. The second connecting rod is passed through the second nut located above and is locked or loosened in the slide by the two second nuts; the two second fixed shafts are slidably arranged on the second bottom plate.

[0022] Furthermore, the driving motor is a double-headed motor, and the driving motor has a first output shaft and a second output shaft;

[0023] The transmission mechanism includes: a first transmission shaft, a first bevel gear, a second bevel gear, a first spur gear, a first rack, a second spur gear, a third spur gear, a first chain, a first driving sprocket, a first driven sprocket, a second chain, a second driving sprocket, a second driven sprocket, a first small sprocket, a second small sprocket, a fourth spur gear, a fifth spur gear, a sixth spur gear, a second rack, a third rack, a seventh spur gear, a fourth rack, a first U-shaped frame and a second U-shaped frame;

[0024] The first bevel gear is provided on the first output shaft of the drive motor; the first transmission shaft is rotatably provided on the vehicle plate, the first spur gears are provided at both ends of the first transmission shaft, and the second bevel gear is provided in the middle, and the second bevel gear is meshed with the first bevel gear; the first rack is provided on each of the connecting shafts, and the first rack is meshed with the first spur gear on the same side;

[0025] The second spur gear is provided on the second output shaft of the driving motor, and the third spur gear and the fourth spur gear are both rotatably provided on the vehicle plate and are located on both sides of the second spur gear, and are meshed with the second spur gear; the first driving sprocket is coaxially arranged with the third spur gear, and the second driving sprocket is coaxially arranged with the fourth spur gear; the first driven sprocket and the second driven sprocket are both rotatably provided on the vehicle plate, the first chain is sleeved on the first driving sprocket and the first driven sprocket, and the second chain is sleeved on the second driving sprocket and the second driven sprocket; the first small sprocket is rotatably provided on the first base plate, and the second small sprocket is rotatably provided on the second base plate, and the first small sprocket is located between the first driving sprocket and the first driven sprocket, and is meshed with the first chain. , the second small sprocket is located between the second driving sprocket and the second driven sprocket, and is meshed with the second chain; the diameters of the first driving sprocket, the first driven sprocket, the second driving sprocket and the second driven sprocket are the same, which is D, and the diameters of the first small sprocket and the second small sprocket are the same, which is d, d<D; the fifth spur gear is coaxially arranged with the first small sprocket, one of the first fixed shafts is provided with a second rack, the second rack is meshed with the fifth spur gear, and the other first fixed shaft is connected to the second rack through the first U-shaped frame; the sixth spur gear is coaxially arranged with the second small sprocket, one of the second fixed shafts is provided with a third rack, the third rack is meshed with the sixth sprocket, and the other second fixed shaft is connected to the third rack through the second U-shaped frame;

[0026] The seventh spur gear is arranged on the second output shaft of the driving motor, each of the third fixed shafts is provided with the fourth rack, and each of the fourth racks is meshed with the seventh spur gear.

[0027] Furthermore, the cross-sectional area of ​​one end of the first connecting rod connected to the first bottom plate is increased; and the cross-sectional area of ​​one end of the second connecting rod connected to the second bottom plate is increased.

[0028] Furthermore, a warning light is provided on the vehicle panel.

[0029] Beneficial effects of the present invention:

[0030] The present invention provides a bus body traction device, which is towed by a forklift, the forklift includes a fork arm with a groove provided on the fork arm; the bus body traction device includes: a vehicle plate, a connecting mechanism, a fixing mechanism, a transmission mechanism and a drive motor; the vehicle plate is rectangular, and universal wheels are provided at the four corners of the vehicle plate; the connecting mechanism is retractably provided at one end of the vehicle plate in the length direction; the fixing mechanism includes a first fixing assembly, a second fixing assembly and a third fixing assembly; the first fixing assembly and the second fixing assembly are spaced apart on the vehicle plate along the width direction of the vehicle plate, the first fixing assembly and the second fixing assembly are retractably provided on the vehicle plate, and can slide on the vehicle plate along the width direction of the vehicle plate; the third fixing assembly is retractably provided at one end of the vehicle plate away from the connecting mechanism; the drive motor is transmission-connected to the first fixing assembly, the second fixing assembly, the third fixing assembly and the connecting mechanism through the transmission mechanism, and drives the first fixing assembly, the second fixing assembly and the third fixing assembly to synchronously extend or retract the vehicle plate, and when the connecting mechanism extends out of the vehicle plate, it can be connected to the groove; when the first fixing assembly, the second fixing assembly and the third fixing assembly extend out of the vehicle plate, they can fix the bus body.

[0031] Completed bus bodies on the production line are transported directly to the factory floor via a bus body hauling device for centralized management and loading. This eliminates the risk of collisions caused by trucks entering the factory and prevents trucks from occupying aisles and disrupting normal production. Fixing mechanisms on the vehicle deck enhance bus body stability and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are 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.

[0033] Figure 1 A schematic diagram of the structure of the bus body and vehicle panel provided in an embodiment of the present invention;

[0034] Figure 2 A schematic structural diagram of a transmission mechanism provided in an embodiment of the present invention;

[0035] Figure 3 A top view of a vehicle panel provided in an embodiment of the present invention.

[0036] Icons: 11-car plate; 111-first opening; 112-second opening; 113-third opening; 114-slideway; 12-universal wheel; 13-drive motor; 131-first output shaft; 132-second output shaft;

[0037] 21-connecting shaft; 22-first fixed shaft; 23-second fixed shaft; 24-third fixed shaft;

[0038] 31-first transmission shaft; 32-first bevel gear; 33-second bevel gear; 34-first spur gear; 35-first rack; 36-second spur gear; 37-third spur gear; 38-first chain; 42-second chain; 45-fourth spur gear; 46-fifth spur gear; 47-sixth spur gear; 48-second rack; 49-third rack; 51-seventh spur gear; 52-fourth rack. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] like Figures 1 to 3 As shown, one embodiment of the present invention provides a bus body traction device, which is towed by a forklift, the forklift includes a fork arm, and a groove is provided on the fork arm; the bus body traction device includes: a vehicle plate 11, a connecting mechanism, a fixing mechanism, a transmission mechanism and a drive motor 13; the vehicle plate 11 is rectangular, and universal wheels 12 are provided at the four corners of the vehicle plate 11; the connecting mechanism is retractable and arranged at one end of the vehicle plate 11 in the length direction; the fixing mechanism includes a first fixing component, a second fixing component and a third fixing component; the first fixing component and the second fixing component are spaced apart on the vehicle plate 11 along the width direction of the vehicle plate 11, and the first fixing component and the third fixing component are spaced apart from each other. The second fixing assembly is retractably arranged on the vehicle plate 11 and can slide on the vehicle plate 11 along the width direction of the vehicle plate 11; the third fixing assembly is retractably arranged at the end of the vehicle plate 11 away from the connecting mechanism; the drive motor 13 is connected to the first fixing assembly, the second fixing assembly, the third fixing assembly and the connecting mechanism through the transmission mechanism, and drives the first fixing assembly, the second fixing assembly and the third fixing assembly to synchronously extend or retract the vehicle plate 11, and when the connecting mechanism extends out of the vehicle plate 11, it can be connected to the groove; when the first fixing assembly, the second fixing assembly and the third fixing assembly extend out of the vehicle plate 11, they can fix the bus body.

[0041] The bus body pulling device provided in this embodiment is pulled by a forklift. The forklift has two forks, each with a groove for engaging with a connecting mechanism provided on the bus body pulling device, thereby driving the bus body pulling device when the forklift moves. In this embodiment, the bus body pulling device includes a vehicle plate 11, a connecting mechanism, a fixing mechanism, a transmission mechanism, and a drive motor 13. The vehicle plate 11 is a rectangular metal plate, such as a steel plate or other alloy plate. The upper surface of the steel plate is used to support the bus body, and the lower surface is mounted with four universal wheels 12, respectively located at the four corners of the steel plate. The vehicle plate 11 moves under the action of the universal wheels 12, and the use of the universal wheels 12 facilitates steering, etc. As mentioned above, the vehicle plate 11 has a rectangular shape, and therefore has a length and a width. The connecting mechanism is designed to engage with the grooves on the forklift's forks and is therefore located at one end of the vehicle plate 11 in the longitudinal direction. Furthermore, a connecting mechanism is retractably mounted on the vehicle plate 11 to facilitate connection between the groove on the forklift's fork arm and the connecting mechanism. The fixing mechanism includes a first fixing assembly, a second fixing assembly, and a third fixing assembly. It should be noted that the bus body is approximately rectangular in structure, and the first, second, and third fixing assemblies respectively secure the three sides of the bus body to improve the stability and safety of the bus body on the vehicle plate 11. Preferably, the first and second fixing assemblies secure the two long sides of the bus body, and the third fixing assembly secures one of the short sides of the bus body. The retractable mounting of the first, second, and third fixing assemblies on the vehicle plate 11 improves the practicality of the vehicle plate 11, allowing the vehicle plate 11 to be used for transporting both the bus body and other components. The first and second fixing assemblies can slide along the width of the vehicle plate 11, thereby accommodating different bus body models. The driving motor 13 can simultaneously drive the first fixing assembly, the second fixing assembly, the third fixing assembly and the connecting mechanism to extend and retract through the transmission mechanism, so as to reduce costs and simplify the structure of the equipment.

[0042] The bus body traction device provided in this embodiment allows bus bodies completed on the production line to be directly transported to the factory for centralized management and loading. This eliminates the risk of collisions caused by trucks entering the factory and also prevents trucks from occupying aisles and disrupting normal production. The provision of a fixing mechanism on the vehicle plate 11 enhances the stability and safety of the bus bodies.

[0043] The bus body traction device provided by the embodiment of the present invention is as follows: Figures 1 to 3As shown, the forklift has two fork arms, each of which is provided with a groove; the connecting mechanism includes two connecting shafts 21, and a sliding hole is provided on the vehicle plate 11. The connecting shafts 21 are slidably arranged in the sliding hole, and the connecting shafts 21 can extend or retract into the sliding hole.

[0044] In this embodiment, the forklift has two forks, and each fork arm is provided with a groove; in order to better match the connecting mechanism with the fork arm of the forklift, preferably, the connecting mechanism includes two connecting shafts 21, and a sliding hole is provided on the vehicle plate 11. The connecting shaft 21 is slidably set in the sliding hole, and the connecting shaft 21 can extend from the sliding hole to be inserted into the groove, or retract into the sliding hole to be separated from the groove.

[0045] The bus body traction device provided by the embodiment of the present invention is as follows: Figures 1 to 3 As shown, the first fixing assembly includes a first base and two first fixing shafts 22; the first base is provided on the vehicle plate 11 and can slide on the vehicle plate 11 along the width direction of the vehicle plate 11; the two first fixing shafts 22 are slidably provided on the base, and the two first fixing shafts 22 are spaced apart along the width direction of the vehicle plate 11; a first opening 111 is provided on the vehicle plate 11, and the first opening 111 is a long hole and extends along the width direction of the vehicle plate 11; the two first fixing shafts 22 are both connected to the transmission mechanism, and the drive motor 13 drives the two first fixing shafts 22 to slide on the first base through the transmission mechanism, so that the two first fixing shafts 22 can extend or retract the vehicle plate 11 from the first opening 111; the second fixing assembly includes a second base and two second fixing shafts 23; the second base is provided on the vehicle plate 11 and can slide on the vehicle plate 11 along the width direction of the vehicle plate 11; the two second fixing shafts 23 are slidably provided on the base, and the two second fixing shafts 23 are spaced apart along the width direction of the vehicle plate 11 The two third fixed shafts 24 are respectively arranged at intervals, and the second opening 112 is provided on the vehicle plate 11, and the second opening 112 is a long hole and extends along the width direction of the vehicle plate 11; the two second fixed shafts 23 are both connected to the transmission mechanism, and the drive motor 13 drives the two second fixed shafts 23 to slide on the second base through the transmission mechanism, so that the two second fixed shafts 23 can extend from the second opening 112 or retract into the vehicle plate 11; the third fixed assembly includes a third base and two third fixed shafts 24; the third base is provided on the vehicle plate 11; the two third fixed shafts 24 are slidably provided on the base, and the two third fixed shafts 24 are arranged at intervals along the length direction of the vehicle plate 11; a third opening 113 corresponding to the two third fixed shafts 24 is provided on the vehicle plate 11; the two third fixed shafts 24 are both connected to the transmission mechanism, and the drive motor 13 drives the two third fixed shafts 24 to slide on the third base through the transmission mechanism, so that the two third fixed shafts 24 can extend from the corresponding third opening 113 or retract into the vehicle plate 11.

[0046] As mentioned above, the first and second fixing assemblies are used to secure the two long sides of the bus body, while the third fixing assembly is used to secure one of the short sides. Specifically, the first fixing assembly includes a first base and two first fixing shafts 22. The first base is mounted on the vehicle plate 11 and can slide along the width of the vehicle plate 11 to accommodate buses of varying widths. The two first fixing shafts 22 are slidably mounted on the first base. The vehicle plate 11 is provided with a first opening 111. The first opening 111 is an elongated hole extending in a direction that aligns with the sliding direction of the first base. This allows the first fixing shafts 22, which are slidably mounted on the first base, to slide synchronously within the first opening 111 as the first base slides. The first opening 111 is a through hole, and the two first fixing shafts 22 slide vertically on the first base, extending from or retracting into the first opening 111. A clamping space is formed between the two first fixing shafts 22 for securing the bus body. When the two first fixed shafts 22 extend from the vehicle plate 11 through the first opening 111, they can secure one of the long sides of the bus body. Similarly, the second fixing assembly includes a second base and two second fixed shafts 23. The second base is mounted on the vehicle plate 11 and can slide along the width of the vehicle plate 11 to accommodate bus bodies of varying widths. The two second fixed shafts 23 are slidably mounted on the second base. The vehicle plate 11 is provided with a second opening 112. The second opening 112 is an elongated hole extending in a direction that matches the sliding direction of the second base. This allows the second fixed shafts 23, which are slidably mounted on the second base, to slide synchronously within the second opening 112 as the second base slides. The second opening 112 is a through hole, and the two second fixed shafts 23 slide vertically on the second base, extending from or retracting into the second opening 112. A clamping space is formed between the two second fixed shafts 23 for securing the bus body. When the two second fixed shafts 23 extend from the vehicle plate 11 through the second openings 112, they can secure one of the long sides of the bus body. The third fixing assembly includes a third base and two third fixed shafts 24. The third base is fixed to the vehicle plate 11, and the two third fixed shafts 24 are slidably mounted on the third base. The vehicle plate 11 is provided with two third openings 113 corresponding to the third fixed shafts 24. By sliding the third fixed shafts 24 on the third bases, the third fixed shafts 24 can extend from the third openings 113 to secure the bus body, or retract into the third openings 113. The sliding of the first fixed shaft 22, the second fixed shaft 23, and the third fixed shaft 24 is controlled by the drive motor 13 through a transmission mechanism.

[0047] The bus body traction device provided by the embodiment of the present invention is as follows: Figures 1 to 3 As shown, a slideway 114 extending along the width direction of the vehicle plate 11 is provided on the vehicle plate 11 , and the first base and the second base are slidably arranged in the slideway 114 .

[0048] In this embodiment, only one slideway 114 is provided, and both the first base and the second base are slidably disposed within this slideway 114. Since the first fixed shaft 22 is located within the first opening 111 and is also slidably disposed on the first base, the sliding range of the first base is the length of the first opening 111; similarly, the sliding range of the second base is the length of the second opening 112. Moreover, since the first opening 111 and the second opening 112 are spaced apart, the first base and the second base do not interfere with each other during sliding.

[0049] The bus body traction device provided by the embodiment of the present invention is as follows: Figures 1 to 3 As shown, preferably, the slideway 114 is a long hole opened on the vehicle plate 11, which has a simple structure and is easy to manufacture. Optionally, the slideway 114 can also be a T-shaped slideway or the like.

[0050] In the bus body towing device provided in this embodiment of the present invention, one long side of the bus body is fixed between two first fixed axles 22, the other long side is fixed between two second fixed axles 23, and one short side is fixed between two third fixed axles 24. To protect the bus body, each of the first, second, and third fixed axles 22, 23, 24 is fitted with a protective pad made of a flexible material. For example, the protective pad can be made of rubber, silicone, cloth, or the like.

[0051] The bus body traction device provided by the embodiment of the present invention is as follows: Figures 1 to 3 As shown, the first base includes a first connecting rod and a first base plate; the first connecting rod is a screw rod, and two first nuts are screwed on the first connecting rod. The first connecting rod is passed through the slide 114 through the first nut located above, and is locked or loosened in the slide 114 by the two first nuts; two first fixed shafts 22 are slidably arranged on the first base plate; the second base includes a second connecting rod and a second base plate; the second connecting rod is a screw rod, and two second nuts are screwed on the second connecting rod. The second connecting rod is passed through the slide 114 through the second nut located above, and is locked or loosened in the slide 114 by the two second nuts; two second fixed shafts 23 are slidably arranged on the second base plate.

[0052] In this embodiment, the first base includes a first connecting rod and a first base plate. The first connecting rod is preferably a screw, one end of which is connected to the first base plate. The first connecting rod and the first base plate can be welded or screwed together. The other end of the first connecting rod is located in the slide 114 and has two nuts, one on each side of the slide 114. The upper nut can be welded to the first connecting rod and is mainly used to prevent the first connecting rod from falling off the slide 114. The lower nut is used to lock or loosen the first connecting rod in the slide 114. An axial hole or a shaft sleeve can be provided on the first base plate to enable the first fixed shaft 22 to slide on the first base plate. The second base includes a second connecting rod and a second base plate. The second connecting rod is preferably a screw rod, one end of which is connected to the second bottom plate. The second connecting rod and the second bottom plate can be welded or screwed together. The other end of the second connecting rod is located in the slideway 114 and has two nuts, which are located on both sides of the slideway 114. The upper nut can be welded to the second connecting rod and is mainly used to prevent the second connecting rod from falling off the slideway 114. The lower nut is used to lock or loosen the second connecting rod in the slideway 114. A shaft hole or a shaft sleeve can be provided on the second bottom plate to enable the second fixed shaft 23 to slide on the second bottom plate.

[0053] The bus body traction device provided by the embodiment of the present invention is as follows: Figures 1 to 3As shown, the drive motor 13 is a double-headed motor, and the drive motor 13 has a first output shaft 131 and a second output shaft 132; the transmission mechanism includes: a first transmission shaft 31, a first bevel gear 32, a second bevel gear 33, a first spur gear 34, a first rack 35, a second spur gear 36, a third spur gear 37, a first chain 38, a first driving sprocket, a first driven sprocket, a second chain 42, a second driving sprocket, a second driven sprocket, a first small sprocket, a second small sprocket, a fourth spur gear 45, a fifth spur gear 46, a sixth spur gear 47, a second rack 48, a third rack 49, a seventh spur gear 51, a fourth rack 52, a first U-shaped frame and a second U-shaped frame The first bevel gear 32 is provided on the first output shaft 131 of the driving motor 13; the first transmission shaft 31 is rotatably provided on the vehicle plate 11, and the first spur gears 34 are provided at both ends of the first transmission shaft 31, and the second bevel gear 33 is provided in the middle, and the second bevel gear 33 is meshed with the first bevel gear 32; the first rack 35 is provided on each of the connecting shafts 21, and the first rack 35 is meshed with the first spur gear 34 on the same side; the second spur gear 36 is provided on the second output shaft 132 of the driving motor 13, and the third spur gear 37 and the fourth spur gear 45 are both rotatably provided on the vehicle plate 11 and are located at the first Both sides of the two spur gears 36 are meshed with the second spur gear 36 at the same time; the first driving sprocket is coaxially arranged with the third spur gear 37, and the second driving sprocket is coaxially arranged with the fourth spur gear 45; the first driven sprocket and the second driven sprocket are both rotatably arranged on the vehicle plate 11, the first chain 38 is sleeved on the first driving sprocket and the first driven sprocket, and the second chain 42 is sleeved on the second driving sprocket and the second driven sprocket; the first small sprocket is rotatably arranged on the first bottom plate, and the second small sprocket is rotatably arranged on the second bottom plate. The first small sprocket is located between the first driving sprocket and the first driven sprocket. The first fixed shaft 22 is provided with a second rack 48, and the second rack 48 is meshed with the fifth spur gear 46. The other first fixed shaft 22 is connected to the second rack 48 through the first U-shaped frame.The sixth spur gear 47 is coaxially arranged with the second small sprocket. A third rack 49 is provided on one of the second fixed shafts 23, meshing with the sixth spur gear 47. The other second fixed shaft 23 is connected to the third rack 49 via the second U-shaped bracket. The seventh spur gear is provided on the second output shaft 132 of the drive motor 13. Each of the third fixed shafts 24 is provided with a fourth rack 52, meshing with the seventh spur gear 51.

[0054] In this embodiment, the drive motor 13 preferably employs a double-ended motor having two output shafts for easier driving. For ease of description, the two output shafts of the drive motor 13 are respectively a first output shaft 131 and a second output shaft 132. The transmission mechanism comprises: a first transmission shaft 31, a first bevel gear 32, a second bevel gear 33, a first spur gear 34, a first rack 35, a second spur gear 36, a third spur gear 37, a first chain 38, a first driving sprocket, a first driven sprocket, a second chain 42, a second driving sprocket, a second driven sprocket, a first small sprocket, a second small sprocket, a fourth spur gear 45, a fifth spur gear 46, a sixth spur gear 47, a second rack 48, a third rack 49, a seventh spur gear 51, a fourth rack 52, a first U-shaped connecting frame, and a second U-shaped connecting frame. The drive motor 13 is fixed to the vehicle plate 11. The first transmission shaft 31 is rotatably mounted on the vehicle plate 11 via a structure such as a bearing seat. Furthermore, the first transmission shaft 31 is disposed perpendicularly to the first output shaft 131. The first transmission shaft 31 is provided with a first spur gear 34 and a second bevel gear 33 via a keyway. The first spur gear 34 is provided at both ends of the first transmission shaft 31, and the second bevel gear 33 is located in the middle of the first transmission shaft 31. A first bevel gear 32 is provided on the first output shaft 131 via a keyway. The first bevel gear 32 on the first output shaft 131 meshes with the second bevel gear 33 on the first transmission shaft 31, so that when the first output shaft 131 rotates, it can drive the first transmission shaft 31 to rotate. As mentioned above, the connecting mechanism includes two connecting shafts 21, which are slidably mounted on the vehicle plate 11. Each connecting shaft 21 is provided with a first rack 35, which meshes with the first spur gear 34 on the same side. When the first spur gear 34 rotates, it can drive the first rack 35 to move, thereby driving the connecting shaft 21 connected to the first rack 35 to slide. Optionally, the first rack 35 can be slidably mounted on the vehicle plate 11 via a slide rail and a slider. The second output shaft 132 is provided with a second spur gear 36 and a seventh spur gear 51 via a keyway. The third spur gear 37 and the fourth spur gear 45 are rotatably mounted on the vehicle plate 11 via a shaft seat. The third spur gear 37 and the fourth spur gear 45 are located on either side of the second spur gear 36 and mesh with the second spur gear 36. The first driving sprocket and the third spur gear 37 are mounted on the same shaft, while the second driving sprocket and the fourth spur gear 45 are mounted on the same shaft. The first and second driven sprockets are also rotatably mounted on the vehicle plate 11 via a shaft seat. The first chain 38 is mounted on the first driving sprocket and the first driven sprocket, while the second chain 42 is mounted on the second driving sprocket and the second driven sprocket.The first base plate is provided with an axle seat, on which the first small sprocket is rotatably mounted. Furthermore, only one side of the first small sprocket is engaged with the first chain 38, so that the first small sprocket can move synchronously and not rotate when the first base slides. Similarly, the second base plate is provided with an axle seat, on which the second small sprocket is rotatably mounted. Furthermore, only one side of the second small sprocket is engaged with the second chain 42, so that the second small sprocket can move synchronously and not rotate when the second base slides. The fifth spur gear 46 is coaxially arranged with the first small sprocket, and the sixth spur gear 47 is coaxially arranged with the second small sprocket. One of the first fixed shafts 22 is directly connected to the second rack 48, and the other first fixed shaft 22 is connected to the second rack 48 via a first U-shaped connecting frame, so that the two first fixed shafts 22 can move synchronously and can be arranged along the width direction of the vehicle plate 11.

[0055] Each of the second racks 48 meshes with the fifth spur gear 46. One of the second fixed shafts 23 is directly connected to the third rack 49, while the other second fixed shaft 23 is connected to the third rack 49 via a second U-shaped connecting bracket. This allows the two second fixed shafts 23 to move synchronously and be arranged along the width of the vehicle plate 11. Each of the third racks 49 meshes with the sixth spur gear 47. Preferably, the second racks 48 are slidably mounted on the first base plate via a slide rail and a slider, while the third racks 49 are slidably mounted on the second base plate via a slide rail and a slider. When the second output shaft 132 rotates, the second spur gear 36 rotates along with the second output shaft 132, thereby driving the third spur gear 37 and the fourth spur gear 45 meshing with the second spur gear 36 to rotate synchronously. The first driving sprocket rotates along with the third spur gear 37, and the second driving sprocket rotates along with the fourth spur gear 45. The first chain 38 and the second chain 42 move synchronously, and the first small sprocket meshing with the first chain 38 rotates, driving the fifth spur gear 46 to rotate. The second rack 48 meshing with the fifth spur gear 46 moves synchronously, thereby driving the first fixed shaft 22 to move. The second small sprocket meshing with the second chain 42 rotates, driving the sixth spur gear 47 to rotate, and the third rack 49 meshing with the sixth spur gear 47 moves synchronously, thereby driving the second fixed shaft 23. Each third fixed shaft 24 is provided with a fourth rack 52. The two fourth racks 52 can be slidably mounted on the third base via a slide rail and a slider.

[0056] Preferably, in this embodiment, the cross-sectional area of ​​the end of the first connecting rod connected to the first bottom plate is increased, and the cross-sectional area of ​​the end of the second connecting rod connected to the second bottom plate is increased to improve stability.

[0057] Preferably, in this embodiment, a warning light is provided on the vehicle plate 11; more preferably, a plurality of warning lights are provided and are spaced apart along the circumference of the vehicle plate 11 on the vehicle plate 11 to remind passing staff to pay attention to safety.

[0058] In the description of the present invention, it should be noted that the terms "upper" and "lower" and other terms indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0059] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or they can refer to connections between the internal parts of two components. A person of ordinary skill in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0060] 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, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bus body traction device, towed by a forklift, the forklift comprising a fork arm, the fork arm being provided with a groove; It is characterized in that The bus body traction device comprises: a vehicle plate (11), a connecting mechanism, a fixing mechanism, a transmission mechanism and a driving motor (13); The vehicle plate (11) is rectangular, and universal wheels (12) are provided at the four corners of the vehicle plate (11); The connecting mechanism is telescopically arranged at one end of the vehicle plate (11) in the length direction; The fixing mechanism comprises a first fixing component, a second fixing component and a third fixing component; the first fixing component and the second fixing component are arranged on the vehicle plate (11) at intervals along the width direction of the vehicle plate (11); the first fixing component and the second fixing component are telescopically arranged on the vehicle plate (11) and are capable of sliding on the vehicle plate (11) along the width direction of the vehicle plate (11); the third fixing component is telescopically arranged at one end of the vehicle plate (11) away from the connecting mechanism; The drive motor (13) is connected to the first fixing assembly, the second fixing assembly, the third fixing assembly and the connecting mechanism through the transmission mechanism, and drives the first fixing assembly, the second fixing assembly and the third fixing assembly to synchronously extend or retract the vehicle plate (11), and when the connecting mechanism extends out of the vehicle plate (11), it can be connected to the groove; when the first fixing assembly, the second fixing assembly and the third fixing assembly extend out of the vehicle plate (11), they can fix the bus body; The first fixing assembly comprises a first base and two first fixing shafts (22); the first base is arranged on the vehicle plate (11) and can slide on the vehicle plate (11) along the width direction of the vehicle plate (11); the two first fixing shafts (22) are slidably arranged on the base, and the two first fixing shafts (22) are arranged at intervals along the width direction of the vehicle plate (11); a first opening (111) is provided on the vehicle plate (11), and the first opening (111) is a long hole and extends along the width direction of the vehicle plate (11); the two first fixing shafts (22) are both connected to the transmission mechanism, and the driving motor (13) drives the two first fixing shafts (22) to slide on the first base through the transmission mechanism, so that the two first fixing shafts (22) can extend from the first opening (111) to or retract into the vehicle plate (11).

2. The bus body traction device according to claim 1, characterized in that: The forklift has two fork arms, each of which is provided with a groove; The connection mechanism comprises two connection shafts (21); a sliding hole is provided on the vehicle plate (11); the connection shafts (21) are slidably arranged in the sliding hole; and the connection shafts (21) can extend out of or retract into the sliding hole.

3. The bus body traction device according to claim 2, characterized in that: The second fixing assembly comprises a second base and two second fixing shafts (23); the second base is arranged on the vehicle plate (11) and can slide on the vehicle plate (11) along the width direction of the vehicle plate (11); the two second fixing shafts (23) are slidably arranged on the base, and the two second fixing shafts (23) are arranged at intervals along the width direction of the vehicle plate (11); a second opening (112) is provided on the vehicle plate (11), and the second opening (112) is a long hole and extends along the width direction of the vehicle plate (11); the two second fixing shafts (23) are both connected to the transmission mechanism in a transmission manner, and the driving motor (13) drives the two second fixing shafts (23) to slide on the second base through the transmission mechanism, so that the two second fixing shafts (23) can extend from the second opening (112) to or retract into the vehicle plate (11); The third fixing assembly comprises a third base and two third fixing shafts (24); the third base is arranged on the vehicle plate (11); the two third fixing shafts (24) are slidably arranged on the base, and the two third fixing shafts (24) are arranged at intervals along the length direction of the vehicle plate (11); a third opening (113) corresponding to the two third fixing shafts (24) is provided on the vehicle plate (11); the two third fixing shafts (24) are both connected to the transmission mechanism in a transmission manner, and the driving motor (13) drives the two third fixing shafts (24) to slide on the third base through the transmission mechanism, so that the two third fixing shafts (24) can extend from or retract into the vehicle plate (11) through the corresponding third openings (113).

4. The bus body traction device according to claim 3, characterized in that: The vehicle plate (11) is provided with a slideway (114) extending along the width direction of the vehicle plate (11), and the first base and the second base are slidably arranged in the slideway (114).

5. The bus body traction device according to claim 4, characterized in that: The slideway (114) is a long hole opened on the vehicle plate (11).

6. The bus body traction device according to claim 3, characterized in that: The first fixed shaft (22), the second fixed shaft (23) and the third fixed shaft (24) are all provided with protective pads made of flexible material.

7. The bus body traction device according to claim 5, characterized in that: The first base comprises a first connecting rod and a first bottom plate; the first connecting rod is a screw rod, two first nuts are screwed on the first connecting rod, the first connecting rod is inserted into the slideway (114) through the first nut located above, and is locked or loosened in the slideway (114) by the cooperation of the two first nuts; two first fixed shafts (22) are slidably arranged on the first bottom plate; The second base comprises a second connecting rod and a second bottom plate; the second connecting rod is a screw rod, two second nuts are screwed on the second connecting rod, the second connecting rod is inserted into the slideway (114) through the second nut located above, and is locked or loosened in the slideway (114) by the cooperation of the two second nuts; two second fixed shafts (23) are slidably arranged on the second bottom plate.

8. The bus body traction device according to claim 7, characterized in that: The drive motor (13) is a double-headed motor, and the drive motor (13) has a first output shaft (131) and a second output shaft (132); The transmission mechanism comprises: a first transmission shaft (31), a first bevel gear (32), a second bevel gear (33), a first spur gear (34), a first rack (35), a second spur gear (36), a third spur gear (37), a first chain (38), a first driving sprocket, a first driven sprocket, a second chain (42), a second driving sprocket, a second driven sprocket, a first small sprocket, a second small sprocket, a fourth spur gear (45), a fifth spur gear (46), a sixth spur gear (47), a second rack (48), a third rack (49), a seventh spur gear (51), a fourth rack (52), a first U-shaped frame and a second U-shaped frame; The first bevel gear (32) is arranged on the first output shaft (131) of the driving motor (13); the first transmission shaft (31) is rotatably arranged on the vehicle plate (11); the first spur gears (34) are arranged at both ends of the first transmission shaft (31); the second bevel gear (33) is arranged in the middle; the second bevel gear (33) is meshed with the first bevel gear (32); the first rack (35) is arranged on each of the connecting shafts (21); the first rack (35) is meshed with the first spur gear (34) on the same side; The second spur gear (36) is arranged on the second output shaft (132) of the driving motor (13); the third spur gear (37) and the fourth spur gear (45) are both rotatably arranged on the vehicle plate (11) and are located on both sides of the second spur gear (36) and are meshed with the second spur gear (36); the first driving sprocket is coaxially arranged with the third spur gear (37), and the second driving sprocket is coaxially arranged with the fourth spur gear (45); the first driven sprocket and the second driven sprocket are both rotatably arranged on the vehicle plate (11), the first chain (38) is sleeved on the first driving sprocket and the first driven sprocket, and the second chain (42) is sleeved on the second driving sprocket and the second driven sprocket; the first small sprocket is rotatably arranged on the first bottom plate, and the second small sprocket is rotatably arranged on the second bottom plate, the first small sprocket is located between the first driving sprocket and the first driven sprocket, and is meshed with the first chain (38). The second small sprocket is located between the second driving sprocket and the second driven sprocket and meshes with the second chain (42); the diameters of the first driving sprocket, the first driven sprocket, the second driving sprocket and the second driven sprocket are the same, namely, D; the diameters of the first small sprocket and the second small sprocket are the same, namely, d, d<D; the fifth spur gear (46) is coaxially arranged with the first small sprocket, one of the first fixed shafts (22) is provided with a second rack (48), the second rack (48) meshes with the fifth spur gear (46), and the other first fixed shaft (22) is connected to the second rack (48) via the first U-shaped frame; the sixth spur gear (47) is coaxially arranged with the second small sprocket, one of the second fixed shafts (23) is provided with a third rack (49), the third rack (49) meshes with the sixth sprocket (47), and the other second fixed shaft (23) is connected to the third rack (49) via the second U-shaped frame; The seventh spur gear is arranged on the second output shaft (132) of the drive motor (13), each of the third fixed shafts (24) is provided with a fourth rack (52), and each of the fourth racks (52) is meshed with the seventh spur gear (51).

9. The bus body traction device according to claim 7, characterized in that: The cross-sectional area of ​​one end of the first connecting rod connected to the first bottom plate is increased; and the cross-sectional area of ​​one end of the second connecting rod connected to the second bottom plate is increased.

10. A bus body traction device according to claim 1, characterized in that: A warning light is provided on the vehicle plate (11).

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