Vehicle body lifting device, vehicle body lifting equipment and vehicle body assembling system

Abstract

The utility model provides a kind of vehicle body lifting appliance, vehicle body hoisting equipment and vehicle body combined system, vehicle body lifting appliance includes top frame, and at least two lifting arm mechanisms being downwardly extended from top frame and being oppositely arranged, accommodating space for accommodating vehicle body is formed between lifting arm mechanism, lifting arm mechanism includes lifting arm connected with top frame, and support piece is rotatably connected with lifting arm by pivot, the central axis of pivot is perpendicular to horizontal plane, support piece is used to carry vehicle body from the bottom of vehicle body.The utility model can control vehicle body lifting appliance and vehicle body contact or disengage by rotating support piece, it is very convenient to operate, can reduce the time that vehicle body lifting appliance and vehicle body are engaged or disengage, improve vehicle body hoisting efficiency.Vehicle body lifting appliance can be combined with different types, different size vehicle body, meet the collinear production of multiple vehicle models.The weight and occupied space of vehicle body lifting appliance are relatively small, the manufacturing cost is relatively low, it is very convenient to carry and store.

Description

Technical Field

[0001] This utility model belongs to the field of unmanned vehicle assembly technology, specifically relating to a vehicle body lifting device, vehicle body lifting equipment, and vehicle body assembly system. Background Technology

[0002] The vehicle body assembly process is a crucial step in the assembly of unmanned vehicles. The precision of the vehicle body assembly directly affects the positioning accuracy of the autonomous driving system, the vehicle's operational safety, and its service life.

[0003] Current vehicle body assembly processes typically involve first using a body crane to lift the vehicle body to a predetermined height, then moving the chassis beneath the body, and finally lowering the body onto the chassis, where assembly personnel connect the body and chassis together. However, in the current production model for autonomous vehicles, the limitations of traditional body cranes are becoming increasingly apparent, mainly due to the following issues.

[0004] First, current vehicle body lifting equipment generally adopts a "one vehicle model, one design" approach, lacking effective adjustment mechanisms. This makes it unable to adapt to lifting operations on different types and sizes of vehicles, and cannot meet the needs of co-production of multiple vehicle models. Consequently, a large number of vehicle body lifting equipment is required, increasing production costs. Second, due to significant fluctuations in the production cycles of different vehicle models, a considerable portion of vehicle body lifting equipment remains idle for extended periods. These idle lifting equipment pieces are relatively heavy, inconvenient to move, and occupy substantial storage space.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this utility model is to provide a vehicle body lifting device that solves the problems of existing vehicle body lifting devices being non-adjustable, heavy, and occupying a large space.

[0007] To achieve the above objectives, a specific embodiment of the present invention provides a vehicle body lifting device, including a top frame and at least two boom mechanisms extending downward from the top frame and arranged opposite each other. An accommodating space for accommodating the vehicle body is formed between the boom mechanisms. The boom mechanism includes a boom connected to the top frame and a support member rotatably connected to the boom via a pivot. The central axis of the pivot is perpendicular to the horizontal plane, and the support member is used to support the vehicle body from the bottom of the vehicle body.

[0008] In one or more embodiments of the present invention, the support member includes a main body portion connected to a pivot shaft and a bearing portion extending upward from the top surface of the main body portion, wherein the top surface of the bearing portion is formed with a bearing surface for contacting the bottom of the vehicle body.

[0009] In one or more embodiments of this utility model, the support member includes a limiting part disposed on the side of the bearing part, the arrangement direction of the limiting part and the bearing part is perpendicular to the extension direction of the main body, and the height of the top surface of the limiting part is higher than the height of the bearing surface.

[0010] In one or more embodiments of this utility model, the boom includes a connecting part connected to a pivot shaft, the connecting part has a first pin hole, a slidable locking pin is provided in the first pin hole, and the support member has a second pin hole, the locking pin is slidably engaged in the second pin hole to restrict the rotation of the support member.

[0011] In one or more embodiments of this utility model, an elastic element is sleeved on the locking pin, and the elastic element is used to provide a force to the locking pin to move into the second pin hole.

[0012] In one or more embodiments of this utility model, the support member has two second pin holes. When the locking pin is engaged with one of the two second pin holes, the support member rotates into the receiving space. When the locking pin is engaged with the other of the two second pin holes, the support member rotates out of the receiving space.

[0013] In one or more embodiments of this utility model, four boom mechanisms are provided and arranged in a rectangular pattern.

[0014] This utility model provides a vehicle body lifting device, which includes the aforementioned vehicle body lifting fixture, a linear motion assembly, and a lifting assembly. The linear motion assembly includes a movable part that can be controlled to move horizontally, and the lifting assembly is disposed on the movable part. The lifting assembly includes a lifting end that can be controlled to move vertically, and the lifting end is connected to the top frame.

[0015] In one or more embodiments of this utility model, the lifting assembly further includes a winch, the hoisting rope of which is connected to the top frame.

[0016] In one or more embodiments of this utility model, the lifting assembly further includes a scissor-type folding mechanism connected to the moving part and the top frame.

[0017] A specific embodiment of this utility model provides a vehicle body assembly system, which includes the aforementioned vehicle body lifting equipment and transfer equipment. The transfer equipment is used to transfer the vehicle body and / or chassis to a designated position under the vehicle body lifting device.

[0018] Compared with the prior art, this utility model can control the contact or detachment of the vehicle body lifting device with the vehicle body by rotating the support component, which is very convenient to operate, can reduce the time of engagement or detachment between the vehicle body lifting device and the vehicle body, and improve the vehicle body lifting efficiency.

[0019] Furthermore, due to the adjustable support components, the body crane can be combined with different types and sizes of body panels, enabling the co-production of multiple models and reducing production costs.

[0020] In addition, since the vehicle body lifting device is similar to a frame structure, it is relatively lightweight and occupies relatively little space, has relatively low manufacturing costs, and is very easy to handle and store. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the vehicle body lifting device in one embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the vehicle body lifting device in working condition according to one embodiment of the present invention;

[0024] Figure 3 for Figure 1 A magnified view of part A in the middle;

[0025] Figure 4 This is a cross-sectional view of the connection between the boom and the support member in one embodiment of the present invention.

[0026] Figure 5 This is a structural schematic diagram of a vehicle body lifting device in one embodiment of the present invention.

[0027] Key reference numerals in the attached drawings: 1. Top frame; 2. Boom mechanism; 21. Boom; 211. First pin hole; 22. Support component; 221. Main body; 222. Bearing component; 223. Limiting component; 224. Second pin hole; 23. Rotating shaft; 24. Locking pin; 25. Elastic component; 3. Linear movement assembly; 31. Moving part; 32. Linear guide rail; 4. Lifting assembly; 41. Winch; 411. Lifting rope; 42. Scissor folding mechanism; 5. Vehicle body; 6. Chassis. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0029] In the description of this utility model, it should be understood that the terms "top", "bottom", "upper", "lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, the terms "second" and "first" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined as "second" or "first" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] Reference Figures 1 to 4 As shown, one embodiment of this application provides a vehicle body lifting device, which is applied in the vehicle body assembly process of an unmanned vehicle. The vehicle body lifting device can engage with the vehicle body 5 of the unmanned vehicle, so that the assembly personnel can lift the vehicle body 5 from near the ground to a preset height, or lower the vehicle body 5 from a preset height to near the ground.

[0032] Specifically, the vehicle body lifting device includes a top frame 1 and four boom mechanisms 2. The four boom mechanisms 2 extend downward from the top frame 1, forming an accommodating space between them for accommodating the vehicle body 5. The four boom mechanisms 2 are arranged in a generally rectangular pattern, with each pair of boom mechanisms 2 positioned opposite each other along the length or width of the vehicle body 5. Each boom mechanism 2 includes a boom 21 and a support member 22. The boom 21 extends generally vertically, and its top end is connected to the top frame 1. The support member 22 extends generally horizontally, is mounted on the boom 21 and adjacent to its bottom end, and is rotatably connected to the boom 21 via a pivot 23, the central axis of which is perpendicular to the horizontal plane.

[0033] According to the above structural design, in the vehicle body assembly process, the assembly personnel can use the lifting assembly 4 to lower the vehicle body hoist to a position close to the ground. The assembly personnel then use AGV carts or other transfer equipment to move the vehicle body 5 between the crane mechanisms 2. Next, the assembly personnel rotate the support member 22 to a position below the vehicle body 5. They then use the lifting assembly 4 to lift the vehicle body hoist, bringing the support member 22 into contact with the bottom of the vehicle body 5, and lift the vehicle body 5 from the AGV carts or other transfer equipment to a preset height. Then, the assembly personnel use AGV carts or other transfer equipment to move the chassis to below the vehicle body 5. They then use the lifting assembly 4 to lower the vehicle body 5 onto the chassis 6. Finally, the assembly personnel use bolts and other components to securely connect the vehicle body 5 and the chassis 6 together, thus completing the vehicle body assembly.

[0034] During the above process, when the vehicle body lifting device is not in contact with the vehicle body 5, the assembly personnel can adjust the position of the support component 22 by rotating it, so that the support component 22 can be moved under the vehicle body 5, allowing the support component 22 to support the vehicle body from the bottom of the vehicle body 5 during the lifting process. Moreover, after the vehicle body 5 is lowered onto the chassis 6, the assembly personnel can also rotate the support component 22 to disengage it from the vehicle body 5, and the AGV trolley and other transfer equipment can transfer the assembled vehicle body 5 and chassis 6 to the next process.

[0035] Furthermore, due to the adjustable nature of the support member 22, the body hanger can be combined with different types and sizes of body panels, and the body hanger can meet the co-production needs of multiple models.

[0036] In addition, since the vehicle body lifting device is similar to a frame structure, it is relatively lightweight and occupies relatively little space, has relatively low manufacturing costs, and is very easy to store.

[0037] Considering that the body 5 of an unmanned vehicle generally consists of a cargo box and a crossbeam at the bottom of the cargo box, and the side wall of the cargo box is generally located at the edge of the body 5, while the lower edge of the side wall of the cargo box is relatively lower than the bottom surface of the crossbeam, when the top surface of the support member 22 is set as a flat structure, the top surface of the support member 22 will contact the lower edge of the side wall of the cargo box during the lifting of the vehicle body, causing stress concentration around the lower edge of the side wall of the cargo box, which can easily cause deformation or damage to the cargo box.

[0038] To address the above problems, in one embodiment, reference is made to... Figure 3As shown, the support member 22 includes a main body 221 and a load-bearing part 222. The main body 221 is connected to the rotating shaft 23, and the load-bearing part 222 extends upward from the top surface of the main body 221. The top surface of the load-bearing part 222 forms a load-bearing surface for contacting the bottom of the vehicle body 5. The main body 221 and the load-bearing part 222 form an L-shaped structure. When the support member 22 rotates to the bottom of the vehicle body 5, the load-bearing part 222 is approximately located below the crossbeam. Since the height of the load-bearing surface at the top of the load-bearing part 222 is relatively high, the load-bearing part 222 can first contact the crossbeam during the upward movement of the vehicle body hoist, applying an upward force to the crossbeam and avoiding applying a force to the vehicle body.

[0039] Preferably, the height difference between the top surface of the main body 221 and the bearing surface can be controlled between 25mm and 50mm.

[0040] Furthermore, the support member 22 includes a limiting part 223 disposed on the side of the bearing part 222. The arrangement direction of the limiting part 223 and the bearing part 222 is perpendicular to the extension direction of the main body 221, and the top surface of the limiting part 223 is higher than the height of the bearing surface. The limiting part 223 and the bearing part 222 can be fixedly connected together by bending, welding, bolting, or other methods. When the bearing surface contacts the crossbeam, the limiting part 223 can contact the side wall of one side of the crossbeam to limit the movement of the vehicle body 5 and prevent the vehicle body 5 from moving during lifting.

[0041] In one embodiment, reference is made to Figure 4 As shown, the boom 21 includes a connecting part connected to the pivot shaft 23. The connecting part has a first pin hole 211, and a slidable locking pin 24 is provided in the first pin hole 211. The support member 22 has a second pin hole 224. When the support member 22 rotates to the underside of the vehicle body 5 and is generally facing the other boom mechanism 2 arranged opposite to it, a part of the locking pin 24 can be controlled to slide into the second pin hole 224, thereby restricting the rotation of the support member 22, locking the position of the support member 22, and preventing the support member 22 from rotating unexpectedly during the lifting process, which could cause the vehicle body 5 to shake or even fall.

[0042] Furthermore, the support member 22 has two second pin holes 224. When the locking pin 24 is engaged with one of the two second pin holes 224, the support member 22 rotates into the receiving space. When the locking pin 24 is engaged with the other of the two second pin holes 224, the support member 22 rotates out of the receiving space.

[0043] Furthermore, a stop structure is formed on the locking pin 24, and an elastic member 25 is sleeved on the locking pin 24. One side of the elastic member 25 contacts the side of the stop structure away from the second pin hole 224, and is used to provide a force to the locking pin 24 to move toward the support member 22.

[0044] Preferably, the elastic element 25 can be a metal spring.

[0045] Reference Figure 5 As shown, one embodiment of this application also provides a vehicle body lifting device, which includes the vehicle body lifting device, linear movement component 3 and lifting component 4 as described in the above embodiments.

[0046] Specifically, the linear motion component 3 is positioned in a relatively high area, such as on the ceiling beam of an assembly workshop. The linear motion component 3 includes a linear guide rail 32 extending horizontally and a moving part 31 connected to the linear guide rail 32. The moving part 31 can move along the linear guide rail 32 under the drive of a motor and a transmission mechanism. The transmission mechanism can generally be a common linear transmission mechanism such as a rack and pinion mechanism, a lead screw mechanism, a chain drive mechanism, or a belt drive mechanism. The lifting component 4 is located on the moving part 31 and can move synchronously with the moving part 31. The lifting component 4 includes a lifting end that can move controllably in a vertical direction. The lifting end is connected to the top frame 1, and the top frame 1 can rise and fall synchronously with the lifting end.

[0047] In one embodiment, reference is made to Figure 5 As shown, the lifting assembly 4 also includes a winch 41, and the lifting rope 411 of the winch 41 is connected to the top frame 1.

[0048] In one embodiment, reference is made to Figure 5 As shown, the lifting assembly 4 also includes a scissor folding mechanism 42 connected to the moving part 31 and the top frame 1. The scissor folding mechanism 42 includes a plurality of cross arms that are rotatably connected from top to bottom. The bottom end of the lowest cross arm forms a lifting end and is rotatably connected to the top frame 1.

[0049] An embodiment of this application also provides a vehicle body assembly system, which includes the vehicle body lifting equipment and transfer equipment in the above embodiments. The transfer equipment includes, but is not limited to, AGV trolleys, rail trolleys, plate chain conveyors and belt conveyors. The transfer equipment is used to transfer the vehicle body 5 and chassis 6 to designated positions under the vehicle body lifting device according to a preset sequence and preset time. The transfer equipment can also transfer the assembled vehicle body 5 and chassis 6 to the next process.

[0050] It should be noted that four boom mechanisms 2 are provided in the above embodiments. This technical solution is one of the options available in practical applications. For those skilled in the art, the number of boom mechanisms 2 can be adjusted without departing from the technical principles of this application. For example, two boom mechanisms 2, six boom mechanisms 2, or even more boom mechanisms 2 can be provided. These improvements should also be considered within the scope of protection of this application.

[0051] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0052] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vehicle body lifting device, characterized in that, The vehicle body lifting device includes a top frame (1) and at least two boom mechanisms (2) extending downward from the top frame (1) and arranged opposite to each other. A receiving space for accommodating the vehicle body is formed between the boom mechanisms (2). The boom mechanism (2) includes a boom (21) connected to the top frame (1) and a support member (22) rotatably connected to the boom (21) via a pivot (23). The central axis of the pivot (23) is perpendicular to the horizontal plane. The support member (22) is used to support the vehicle body from the bottom of the vehicle body. The boom (21) includes a connecting part connected to the pivot shaft (23). The connecting part has a first pin hole (211) and a slidable locking pin (24) inside the first pin hole (211). The support member (22) has a second pin hole (224) and the locking pin (24) is slidably engaged in the second pin hole (224) to restrict the rotation of the support member (22).

2. The vehicle body lifting device according to claim 1, characterized in that, The support member (22) includes a main body (221) connected to the pivot (23) and a bearing portion (222) extending upward from the top surface of the main body (221), the top surface of the bearing portion (222) having a bearing surface for contacting the bottom of the vehicle body.

3. The vehicle body lifting device according to claim 2, characterized in that, The support member (22) includes a limiting part (223) provided on the side of the bearing part (222). The arrangement direction of the limiting part (223) and the bearing part (222) is perpendicular to the extension direction of the main body part (221). The height of the top surface of the limiting part (223) is higher than the height of the bearing surface.

4. The vehicle body lifting device according to claim 1, characterized in that, An elastic element (25) is fitted onto the locking pin (24), the elastic element (25) being used to provide a force to the locking pin (24) to move into the second pin hole (224); and / or, The support member (22) has two second pin holes (224). When the locking pin (24) is engaged with one of the two second pin holes (224), the support member (22) rotates into the accommodating space. When the locking pin (24) is engaged with the other of the two second pin holes (224), the support member (22) rotates out of the accommodating space.

5. The vehicle body lifting device according to claim 1, characterized in that, The boom mechanism (2) has four parts arranged in a rectangular pattern.

6. A vehicle body lifting device, characterized in that, The vehicle body lifting equipment includes: The vehicle body lifting device as described in any one of claims 1 to 5; The linear motion assembly (3) includes a moving part (31) that can move controllably in the horizontal direction. A lifting assembly (4) is provided on the moving part (31). The lifting assembly (4) includes a lifting end that can be controlled to move in the vertical direction and is connected to the top frame (1).

7. The vehicle body lifting equipment according to claim 6, characterized in that, The lifting assembly (4) also includes a winch (41), the lifting rope (411) of which is connected to the top frame (1).

8. The vehicle body lifting equipment according to claim 6, characterized in that, The lifting assembly (4) also includes a scissor folding mechanism (42) connected to the moving part (31) and the top frame (1).

9. A vehicle body assembly system, characterized in that, The vehicle body assembly system includes: The vehicle body lifting equipment as described in any one of claims 6 to 8; Transfer equipment is used to transfer the vehicle body and / or chassis to a designated location under a vehicle body spreader.

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