Vehicle body conveying system

Abstract

The invention provides a vehicle body conveying system which comprises a skid mechanism, a main jacking mechanism, a skid power mechanism and an auxiliary jacking mechanism, the main jacking mechanism, the skid power mechanism and the auxiliary jacking mechanism are linearly arranged, and the main jacking mechanism comprises a jacking power assembly and a first supporting assembly connected with the jacking power assembly; the skid power mechanism comprises a vertical installation assembly, a second supporting assembly vertically arranged on the vertical installation assembly in a sliding mode and a walking power assembly arranged on the second supporting assembly, and the auxiliary jacking mechanism comprises a third supporting assembly. The vehicle body conveying system further comprises a pull rod structure connected with the first supporting assembly, the second supporting assembly and the third supporting assembly, the first supporting assembly, the second supporting assembly and the third supporting assembly are all used for bearing the skid mechanism, and the walking power assembly is used for driving the skid mechanism to walk. The ascending or descending precision of the skid mechanism can be improved, and the conveying time of the vehicle body is greatly shortened.

Description

Technical Field

[0001] The invention relates to the technical field of automobile manufacturing, and in particular to a vehicle body conveying system. Background Art

[0002] At present, in the conveying design of the welding production line, the conveying system of the body-in-white assembly is usually combined with the fixture body. The conveying system is usually lifted in the form of a large cylinder. The body-in-white is placed on a sled. The sled usually moves by a motor driving the roller to give the sled a friction force for walking, and then the body-in-white is driven to move by the sled. In this body conveying method, when the body is raised or lowered, in order to ensure stability, the sled needs to be clamped by a precise positioning clamping mechanism. After the body is raised or lowered, the sled is released by the precise positioning clamping mechanism. The precise positioning clamping mechanism needs to act four times (twice clamping and twice releasing) for one body transportation. Generally, each action of the precise positioning clamping mechanism is used as a signal condition. The next action can only be performed after the signal condition is completed, which leads to a long conveying time. In addition, in order to prevent the two sleds from colliding, the existing conveying system needs to move the previous sled to a certain position before the next sled moves. Two forward or backward operations must be completed in one cycle, which leads to a long conveying time. Summary of the invention

[0003] In view of the deficiencies in the prior art, an object of the present invention is to provide a vehicle body conveying system, aiming to solve the technical problems mentioned in the background technology.

[0004] In order to achieve the above object, the present invention is implemented by the following technical solutions: A vehicle body conveying system includes a sled mechanism, and a main lifting mechanism, a sled power mechanism and an auxiliary lifting mechanism arranged in a straight line, the main lifting mechanism includes a lifting power assembly and a first support assembly connected to the lifting power assembly, the sled power mechanism includes a vertical mounting assembly, a second support assembly vertically slidingly arranged on the vertical mounting assembly, and a walking power assembly arranged on the second support assembly, the auxiliary lifting mechanism includes a third support assembly, the vehicle body conveying system also includes a pull rod structure connecting the first support assembly, the second support assembly and the third support assembly, the first support assembly, the second support assembly and the third support assembly are all used to carry the sled mechanism, and the walking power assembly is used to drive the sled mechanism to walk.

[0005] According to one aspect of the above technical solution, the jacking power assembly includes a motor base, a jacking motor arranged on the motor base, a jacking connecting shaft arranged on the jacking motor, a rotating connecting rod fixedly connected to the jacking connecting shaft, and a stretching connecting rod rotatably connected to the rotating connecting rod, the first supporting assembly includes a first jacking connecting rod, the first jacking connecting rod is in the shape of a hook, has a first bending rod and a second bending rod, and a first connecting end connecting the first bending rod and the second bending rod, a first rotating shaft is provided at the first connecting end, the stretching connecting rod is rotatably arranged on the first rotating shaft, the first supporting assembly also includes a first jacking base, a first jacking platform located above the first jacking base, and a first pulley group arranged on the first jacking platform, the first pulley group is slidably connected to the sled mechanism, the first bending rod is rotatably connected to the first jacking base through the second rotating shaft, the second bending rod is rotatably connected to the first jacking platform through the third rotating shaft, and part of the pull rod structure is rotatably connected to the first rotating shaft.

[0006] According to one aspect of the above technical solution, the vertical mounting assembly includes a second lifting base and an upper and lower sliding guide rail vertically arranged on the second lifting base, the second supporting assembly includes a second lifting connecting rod, the second lifting connecting rod is in a hook shape, has a third bent rod and a fourth bent rod, and a second connecting end connecting the third bent rod and the fourth bent rod, and a fourth rotating shaft is provided at the second connecting end, the second supporting assembly also includes a second lifting platform located above the second lifting base, and a second pulley group provided on the second lifting platform, the second lifting platform is slidably arranged on the upper and lower sliding guide rails, the second pulley group is slidably connected to the sled mechanism, the third bent rod is rotatably connected to the second lifting base through a fifth rotating shaft, a connecting block is rotatably provided on the fourth bent rod, and a front and rear sliding guide rail for sliding of the connecting block is provided on the second lifting platform, the walking power assembly includes a walking motor fixedly connected to the second lifting platform, a walking connecting shaft connected to the walking motor, and a walking gear provided on the walking connecting shaft, and part of the pull rod structure is rotatably connected to the fourth rotating shaft.

[0007] According to one aspect of the above technical solution, the third supporting assembly includes a third lifting rod, which is in the shape of a hook and has a fifth bent rod and a sixth bent rod, and a third connecting end connecting the fifth bent rod and the sixth bent rod, and a sixth rotating shaft is provided at the third connecting end. The third supporting assembly also includes a third lifting base, a third lifting platform located above the third lifting base, and a third pulley group provided on the third lifting platform, the third pulley group is slidingly connected to the slide mechanism, the fifth bent rod is rotatably connected to the third lifting base via the seventh rotating shaft, the sixth bent rod is rotatably connected to the third lifting platform via the eighth rotating shaft, and part of the pull rod structure is rotatably connected to the sixth rotating shaft.

[0008] According to one aspect of the above technical solution, the slide mechanism includes two relatively arranged reciprocating rods, a traveling rack fixedly connected to the bottom of the reciprocating rod, and a plurality of vehicle body positioning support blocks arranged at intervals above the reciprocating rod, the traveling rack is meshed with the traveling gear, and the reciprocating rod is slidably arranged on the first pulley group, the second pulley group and the third pulley group.

[0009] According to one aspect of the above technical solution, there are two auxiliary lifting mechanisms, one of which is located between the main lifting mechanism and the sled power mechanism, and the other is located at one end of the sled power mechanism away from the main lifting mechanism.

[0010] According to one aspect of the above technical solution, a plurality of positioning holes are provided at intervals in the pull rod structure, and the plurality of positioning holes are rotatably connected to the first rotating shaft, the fourth rotating shaft and the sixth rotating shaft respectively.

[0011] According to one aspect of the above technical solution, the main lifting mechanism also includes a first auxiliary lifting assembly, which includes a first cylinder connecting base and a first cylinder body rotatably arranged on the first cylinder connecting base, and a ninth rotating shaft is also provided at the first connecting end, and the protruding end of the first cylinder body is rotatably connected to the ninth rotating shaft.

[0012] According to one aspect of the above technical solution, the sled power mechanism also includes a second auxiliary lifting assembly, which includes a second cylinder connecting base and a second cylinder body rotatably arranged on the second cylinder connecting base, and the protruding end of the second cylinder body is rotatably connected to the fourth rotating shaft.

[0013] According to one aspect of the above technical solution, the auxiliary lifting mechanism also includes a third auxiliary lifting assembly, which includes a third cylinder connecting base and a third cylinder body rotatably arranged on the third cylinder connecting base, and the protruding end of the third cylinder body is rotatably connected to the sixth rotating shaft.

[0014] Compared with the prior art, the present invention has the following beneficial effects: By arranging the main lifting mechanism, the sled power mechanism and the auxiliary lifting mechanism in a straight line, a very long span can be formed between these mechanisms, and then the sled mechanism is placed thereon, so that the sled mechanism can have a very long span and can accommodate multiple vehicle bodies, thereby reducing the transportation time; when the sled mechanism is lifted or lowered, the lifting power assembly on the main lifting mechanism can be used to drive the first support assembly to rise or fall. Due to the presence of the pull rod structure, when the first support assembly rises or falls, the second support assembly on the sled power mechanism and the third support assembly on the auxiliary lifting mechanism can be driven to rise or fall synchronously through the pull rod structure. The second support assembly is vertically slidably arranged on the vertical mounting assembly, so the second support assembly can stably drive the sled mechanism to rise or fall. The third support assembly is used to assist the sled mechanism to rise or fall, and can reduce the distance between the first support assembly and the second support assembly, thereby reducing the span of the sled mechanism, making the vehicle body more stable during transportation, and can achieve stable rise or fall without using a precise positioning clamping mechanism to clamp or loosen the sled mechanism, so as to reduce the transportation time. The function of the walking power assembly is to drive the sled mechanism to travel between the first support assembly, the second support assembly and the third support assembly; The present invention can increase the rising or falling accuracy of the sled mechanism and greatly reduce the conveying time of the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a vehicle body conveying system in a first embodiment of the present invention; Figure 2 for Figure 1 Exploded view of the structure at the middle main lifting mechanism; Figure 3 for Figure 1 Exploded diagram of the structure at the middle sled power mechanism; Figure 4 for Figure 1 Structural explosion diagram of the auxiliary lifting mechanism in the middle; Figure 5 for Figure 1 A schematic diagram of the structure of the middle slide mechanism; Figure 6 for Figure 1 Structural schematic diagram of the middle tie rod structure; Figure 7 for Figure 1 A schematic diagram of the structure of the middle body conveying system when the sled mechanism is raised or lowered; Figure 8 for Figure 7 The structural diagram of part A in the figure; Fig. 9 for Figure 7 The structural diagram of part B; Fig.10 for Figure 7 Schematic diagram of the structure of part C; Description of main component symbols:

[0016] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0017] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0018] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0020] See also Figures 1 to 10, shown is a car body conveying system in the first embodiment of the present invention, including a sled mechanism 40, and a main lifting mechanism 10, a sled power mechanism 20 and an auxiliary lifting mechanism 30 arranged in a straight line, the main lifting mechanism 10 includes a lifting power assembly, and a first support assembly connected to the lifting power assembly, the sled power mechanism 20 includes a vertical installation assembly, a second support assembly vertically slidingly arranged on the vertical installation assembly, and a walking power assembly arranged on the second support assembly, the auxiliary lifting mechanism 30 includes a third support assembly, the car body conveying system also includes a pull rod structure 50 connecting the first support assembly, the second support assembly and the third support assembly, the first support assembly, the second support assembly and the third support assembly are all used to carry the sled mechanism 40, and the walking power assembly is used to drive the sled mechanism 40 to walk.

[0021] It can be understood that the present invention arranges the main lifting mechanism 10, the sled power mechanism 20 and the auxiliary lifting mechanism 30 in a straight line, and a very long span can be formed between these mechanisms, and then the sled mechanism 40 is placed thereon, so that the sled mechanism 40 can have a very long span and can accommodate multiple car bodies, thereby reducing the transportation time; when the sled mechanism 40 is lifted or lowered, the lifting power assembly on the main lifting mechanism 10 can be used to drive the first support assembly to rise or fall, and due to the presence of the pull rod structure 50, when the first support assembly rises or falls, the second support assembly on the sled power mechanism 20 and the third support assembly on the auxiliary lifting mechanism 30 will be driven by the pull rod structure 50. The second support assembly is vertically slidably arranged on the vertical mounting assembly, so the second support assembly can stably drive the sled mechanism 40 to rise or fall. The third support assembly is used to assist the sled mechanism 40 in rising or falling, and can reduce the distance between the first support assembly and the second support assembly, thereby reducing the span of the sled mechanism 40, making the vehicle body more stable during transportation, and can achieve stable rising or falling without using a precise positioning clamping mechanism to clamp or loosen the sled mechanism 40, so as to reduce the transportation time. The function of the walking power assembly is to drive the sled mechanism 40 to walk between the first support assembly, the second support assembly and the third support assembly; The present invention can increase the rising or falling accuracy of the sled mechanism 40 and greatly reduce the conveying time of the vehicle body.

[0022] Specifically, in this embodiment, the lifting power assembly includes a motor base 11, a lifting motor 111 arranged on the motor base 11, a lifting connecting shaft 112 arranged on the lifting motor 111, a rotating connecting rod 15 fixedly connected to the lifting connecting shaft 112, and a stretching connecting rod 16 rotatably connected to the rotating connecting rod 15. The first supporting assembly includes a first lifting connecting rod, which is in a hook shape and has a first bending rod 161 and a second bending rod 162, and a first connecting end 166 connecting the first bending rod 161 and the second bending rod 162, and the first connecting end 166 is provided with A first rotating shaft 17, the stretching link 16 is rotatably disposed on the first rotating shaft 17, the first supporting assembly also includes a first lifting base 12, a first lifting platform 14 located above the first lifting base 12, and a first pulley group 141 disposed on the first lifting platform 14, the first pulley group 141 is slidingly connected to the slide mechanism 40, the first bending rod 161 is rotatably connected to the first lifting base 12 through the second rotating shaft 163, the second bending rod 162 is rotatably connected to the first lifting platform 14 through the third rotating shaft 164, and part of the pull rod structure 50 is rotatably connected to the first rotating shaft 17.

[0023] It can be understood that the lifting power assembly serves as the main power source for lifting each lifting platform. When the sled mechanism 40 needs to be lifted, the lifting connecting shaft 112 is driven by the lifting motor 111 to rotate counterclockwise together with the rotating connecting rod 15, so that the rotating connecting rod 15 pulls the stretching connecting rod 16 backward. Since the first bending rod 161 is rotatably connected to the first lifting base 12 through the second rotating shaft 163, the first lifting base 12 limits the first bending rod 161. Therefore, the stretching connecting rod 16 will pull the first lifting connecting rod through the first rotating shaft 17, driving the second bending connecting rod 16 to rotate backward. The rod 162 rotates and moves upward. Since the second bent rod 162 is rotatably connected to the first lifting platform 14 through the third rotating shaft 164, the upward movement of the second bent rod 162 will drive the first lifting platform 14 upward, thereby driving a part of the sled mechanism 40 to move upward, and the first connecting end 166 will also rotate and move upward due to the action of the stretching connecting rod 16, driving part of the pull rod structure 50 upward. Similarly, when it is necessary to lower the sled mechanism 40, the lifting motor 111 is rotated in the opposite direction, so that each structure can be returned to its original position, and finally the first lifting platform 14 can be lowered.

[0024] Furthermore, the vertical mounting assembly includes a second lifting base 21, and an upper and lower sliding guide rail 227 vertically arranged on the second lifting base 21, the second supporting assembly includes a second lifting connecting rod, the second lifting connecting rod is in the shape of a hook, and has a third bending rod 223 and a fourth bending rod 224, and a second connecting end 222 connecting the third bending rod 223 and the fourth bending rod 224, a fourth rotating shaft 225 is arranged at the second connecting end 222, the second supporting assembly also includes a second lifting platform 24 located above the second lifting base 21, and a second pulley set 25 arranged on the second lifting platform 24, and the second lifting platform 24 sliding device On the upper and lower sliding guide rails 227, the second pulley group 25 is slidingly connected to the slide mechanism 40, the third bent rod 223 is rotationally connected to the second lifting base 21 through the fifth rotating shaft 226, the fourth bent rod 224 is rotatably provided with a connecting block 26, and the second lifting platform 24 is provided with front and rear sliding guide rails 27 for sliding of the connecting block 26, the walking power assembly includes a walking motor 23 fixed to the second lifting platform 24, a walking connecting shaft 231 connected to the walking motor 23, and a walking gear 232 arranged on the walking connecting shaft 231, and part of the pull rod structure 50 is rotationally connected to the fourth rotating shaft 225.

[0025] It can be understood that the vertical installation assembly is a key structure to ensure the stable rise of each jacking platform. After the partial pull rod structure 50 at the jacking power assembly rises, the partial pull rod structure 50 at the sled power mechanism 20 will also rise, thereby driving the second connecting end 222 to rotate and rise. The remaining movement principles of the second jacking connecting rod are consistent with the movement principles of the first jacking connecting rod, which will not be repeated here. When the fourth bending rod 224 rotates and rises, it will drive the connecting block 26 to rise together. The rising of the connecting block 26 will drive the second jacking platform 24 to rise. The role of the front and rear sliding guide rails 27 is The connecting block 26 can adaptively adjust its position on the front and rear sliding guide rails 27 to prevent the structure from getting stuck. Due to the existence of the upper and lower sliding guide rails 227, when the second lifting platform 24 rises, it can be ensured that the second lifting platform 24 is always horizontal. Since the travel motor 23 is fixed to the second lifting platform 24, the travel motor 23 will rise with the second lifting platform 24. Since the sled mechanism 40 is arranged on the second lifting platform 24, the travel connecting shaft 231 and the travel gear 232 on the travel motor 23 will also always be located below the sled mechanism 40.

[0026] Furthermore, the third supporting assembly includes a third lifting connecting rod, which is in a hook shape and has a fifth bending rod 322 and a sixth bending rod 323, and a third connecting end 324 connecting the fifth bending rod 322 and the sixth bending rod 323, and a sixth rotating shaft 325 is provided at the third connecting end 324, and the third supporting assembly also includes a third lifting base 31, a third lifting platform 33 located above the third lifting base 31, and a third pulley set 34 provided on the third lifting platform 33, and the third pulley set 34 is slidingly connected to the slide mechanism 40, the fifth bending rod 322 is rotatably connected to the third lifting base 31 through the seventh rotating shaft 326, the sixth bending rod 323 is rotatably connected to the third lifting platform 33 through the eighth rotating shaft 327, and part of the pull rod structure 50 is rotatably connected to the sixth rotating shaft 325.

[0027] It can be understood that the third supporting assembly is used to assist the sled mechanism 40 in rising. After the partial pull rod structure 50 at the lifting power assembly and the sled power mechanism 20 rises, the partial pull rod structure 50 at the auxiliary lifting mechanism 30 will also rise, thereby driving the third connecting end 324 to rotate and rise. The movement principle of the rest of the third lifting link is consistent with the movement principle of the first lifting link and the second lifting link, which will not be elaborated here.

[0028] Preferably, there are two auxiliary lifting mechanisms 30 , one of which is located between the main lifting mechanism 10 and the sled power mechanism 20 , and the other of which is located at one end of the sled power mechanism 20 away from the main lifting mechanism 10 .

[0029] It can be understood that an auxiliary lifting mechanism 30 is arranged between the main lifting mechanism 10 and the sled power mechanism 20 to reduce the span of the sled mechanism 40 on the main lifting mechanism 10 and the sled power mechanism 20, so that the mid-span of the sled mechanism 40 is not easy to deform and is more stable. Another auxiliary lifting mechanism 30 is arranged at the end of the sled power mechanism 20 away from the main lifting mechanism 10 to extend the process of the entire conveying system, thereby lengthening the sled mechanism 40 so that the sled mechanism 40 can accommodate more vehicle bodies, thereby improving production efficiency.

[0030] Specifically, a plurality of positioning holes 51 are provided at intervals in the pull rod structure 50 , and the plurality of positioning holes 51 are rotatably connected to the first rotating shaft 17 , the fourth rotating shaft 225 , and the sixth rotating shaft 325 , respectively.

[0031] Furthermore, the slide mechanism 40 includes two oppositely arranged reciprocating rods 41, a traveling rack 42 fixedly connected to the bottom of the reciprocating rod 41, and a plurality of vehicle body positioning support blocks 43 arranged at intervals above the reciprocating rod 41, the traveling rack 42 is meshed with the traveling gear 232, and the reciprocating rod 41 is slidably arranged on the first pulley group 141, the second pulley group 25 and the third pulley group 34.

[0032] It can be understood that the support block 43 on the reciprocating rod 41 is the main body of the vehicle body. The travel gear 232 is driven to rotate by the travel motor 23, and then the travel rack 42 is driven to reciprocate. The travel rack 42 drives the reciprocating rod 41 to move, so that the vehicle body can be transported. The first pulley group 141, the second pulley group 25 and the third pulley group 34 are used to engage with the reciprocating rod 41. Since the second lifting platform 24 is horizontally upward or downward, when the reciprocating rod 41 is at the second lifting platform 24, the second lifting platform 24 is horizontally upward or downward. When the second pulley block 25 is engaged, it can ensure that the reciprocating rod 41 can always remain in a horizontal state, so that the first pulley block 141 and the third pulley block 34 can also always be in a horizontal state, and then the first lifting platform 14 at the first pulley block 141 and the third lifting platform 33 at the third pulley block 34 can also maintain a horizontal state. This is why it is only necessary to set the upper and lower sliding guide rails 227 at the sled power mechanism 20, and the upper and lower sliding guide rails 227 are not required at the main lifting mechanism 10 and the auxiliary lifting mechanism 30.

[0033] Preferably, the main lifting mechanism 10 also includes a first auxiliary lifting assembly, which includes a first cylinder connecting base 13 and a first cylinder body 131 rotatably arranged on the first cylinder connecting base 13, and a ninth rotating shaft 165 is also provided at the first connecting end 166, and the protruding end of the first cylinder body 131 is rotatably connected to the ninth rotating shaft 165; the sled power mechanism 20 also includes a second auxiliary lifting assembly, which includes a second cylinder connecting base 22 and a second cylinder body 221 rotatably arranged on the second cylinder connecting base 22, and the protruding end of the second cylinder body 221 is rotatably connected to the fourth rotating shaft 225; the auxiliary lifting mechanism 30 also includes a third auxiliary lifting assembly, which includes a third cylinder connecting base 32 and a third cylinder body 321 rotatably arranged on the third cylinder connecting base 32, and the protruding end of the third cylinder body 321 is rotatably connected to the sixth rotating shaft 325.

[0034] It can be understood that the first auxiliary lifting assembly, the second auxiliary lifting assembly and the third auxiliary lifting assembly have the same principle and function. Here, the second auxiliary lifting assembly at the sled power mechanism 20 is used as an example. Since the main power for the second lifting link in the sled power mechanism 20 to rise is brought about by the rise of the pull rod structure 50 at the main lifting mechanism 10, and since the pull rod structure 50 is relatively slender, the pull rod at the sled power mechanism 20 does not necessarily ensure that it is at the same horizontal position as the pull rod at the main lifting mechanism 10. There is a certain deviation, so a second auxiliary lifting assembly is needed to assist the second lifting link to make its rotation angle consistent with the rotation angle of the first lifting link. Specifically, the second cylinder body 221 is used to push the tenth rotating shaft at the second connecting end 222, so that the second lifting link is rotated. This design structure can ensure that the rotation angles of the first lifting link, the second lifting link and the third lifting link are consistent, so that the first lifting platform 14, the second lifting platform 24 and the third lifting platform 33 are lifted to the same horizontal height, thereby ensuring that the horizontal heights of various parts of the sled mechanism 40 are consistent.

[0035] In summary, the vehicle body conveying system in the above-mentioned embodiments of the present invention can increase the accuracy of the rising or falling of the slide mechanism and greatly reduce the conveying time of the vehicle body. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0036] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A vehicle body conveying system, characterized in that: It includes a sled mechanism, a main lifting mechanism, a sled power mechanism and an auxiliary lifting mechanism arranged in a straight line, the main lifting mechanism includes a lifting power assembly and a first support assembly connected to the lifting power assembly, the sled power mechanism includes a vertical mounting assembly, a second support assembly vertically slidingly arranged on the vertical mounting assembly, and a walking power assembly arranged on the second support assembly, the auxiliary lifting mechanism includes a third support assembly, the vehicle body conveying system also includes a pull rod structure connecting the first support assembly, the second support assembly and the third support assembly, the first support assembly, the second support assembly and the third support assembly are all used to carry the sled mechanism, and the walking power assembly is used to drive the sled mechanism to walk.

2. The vehicle body conveying system according to claim 1, characterized in that: The jacking power assembly includes a motor base, a jacking motor arranged on the motor base, a jacking connecting shaft arranged on the jacking motor, a rotating connecting rod fixedly connected to the jacking connecting shaft, and a stretching connecting rod rotatably connected to the rotating connecting rod. The first supporting assembly includes a first jacking connecting rod, the first jacking connecting rod is in the shape of a hook, has a first bending rod and a second bending rod, and a first connecting end connecting the first bending rod and the second bending rod, a first rotating shaft is provided at the first connecting end, the stretching connecting rod is rotatably arranged on the first rotating shaft, the first supporting assembly also includes a first jacking base, a first jacking platform located above the first jacking base, and a first pulley group arranged on the first jacking platform, the first pulley group is slidably connected to the sled mechanism, the first bending rod is rotatably connected to the first jacking base via a second rotating shaft, the second bending rod is rotatably connected to the first jacking platform via a third rotating shaft, and part of the pull rod structure is rotatably connected to the first rotating shaft.

3. The vehicle body conveying system according to claim 2, characterized in that: The vertical mounting assembly includes a second lifting base and an upper and lower sliding guide rail vertically arranged on the second lifting base, the second supporting assembly includes a second lifting connecting rod, the second lifting connecting rod is in the shape of a hook, has a third bent rod and a fourth bent rod, and a second connecting end connecting the third bent rod and the fourth bent rod, a fourth rotating shaft is provided at the second connecting end, the second supporting assembly also includes a second lifting platform located above the second lifting base, and a second pulley group provided on the second lifting platform, the second lifting platform is slidably arranged on the upper and lower sliding guide rails, the second pulley group is slidably connected to the sled mechanism, the third bent rod is rotatably connected to the second lifting base through a fifth rotating shaft, a connecting block is rotatably provided on the fourth bent rod, and a front and rear sliding guide rail for sliding of the connecting block is provided on the second lifting platform, the walking power assembly includes a walking motor fixedly connected to the second lifting platform, a walking connecting shaft connected to the walking motor, and a walking gear provided on the walking connecting shaft, and part of the pull rod structure is rotatably connected to the fourth rotating shaft.

4. The vehicle body conveying system according to claim 3, characterized in that: The third supporting assembly includes a third lifting rod, which is in a hook shape and has a fifth bent rod and a sixth bent rod, and a third connecting end connecting the fifth bent rod and the sixth bent rod, and a sixth rotating shaft is provided at the third connecting end. The third supporting assembly also includes a third lifting base, a third lifting platform located above the third lifting base, and a third pulley group provided on the third lifting platform, the third pulley group is slidingly connected to the slide mechanism, the fifth bent rod is rotatably connected to the third lifting base via a seventh rotating shaft, the sixth bent rod is rotatably connected to the third lifting platform via an eighth rotating shaft, and part of the pull rod structure is rotatably connected to the sixth rotating shaft.

5. The vehicle body conveying system according to claim 4, characterized in that: The slide mechanism includes two oppositely arranged reciprocating rods, a travel rack fixedly connected to the bottom of the reciprocating rod, and a plurality of vehicle body positioning support blocks spaced apart above the reciprocating rod. The travel rack is meshed with the travel gear, and the reciprocating rod is slidably arranged on the first pulley group, the second pulley group and the third pulley group.

6. The vehicle body conveying system according to claim 4, characterized in that: There are two auxiliary lifting mechanisms, one of which is located between the main lifting mechanism and the sled power mechanism, and the other is located at one end of the sled power mechanism away from the main lifting mechanism.

7. The vehicle body conveying system according to claim 6, characterized in that: A plurality of positioning holes are arranged at intervals in the pull rod structure, and the plurality of positioning holes are rotatably connected to the first rotating shaft, the fourth rotating shaft and the sixth rotating shaft respectively.

8. The vehicle body conveying system according to claim 2, characterized in that: The main lifting mechanism also includes a first auxiliary lifting assembly, which includes a first cylinder connecting base and a first cylinder body rotatably arranged on the first cylinder connecting base. A ninth rotating shaft is also provided at the first connecting end, and the protruding end of the first cylinder body is rotatably connected to the ninth rotating shaft.

9. The vehicle body conveying system according to claim 3, characterized in that: The sled power mechanism also includes a second auxiliary lifting assembly, which includes a second cylinder connecting base and a second cylinder body rotatably arranged on the second cylinder connecting base, and the protruding end of the second cylinder body is rotatably connected to the fourth rotating shaft.

10. The vehicle body conveying system according to claim 4, characterized in that: The auxiliary lifting mechanism also includes a third auxiliary lifting assembly, which includes a third cylinder connecting base and a third cylinder body rotatably arranged on the third cylinder connecting base, and the extended end of the third cylinder body is rotatably connected to the sixth rotating shaft.

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