Transportation line special for automobile chassis

Abstract

A transport line special for an automobile chassis comprises a supporting frame, a belt conveyor arranged at the top end of the supporting frame and a feeding device arranged at one end of the belt conveyor, and the supporting frame is composed of supporting legs distributed in the length direction of the belt conveyor at equal intervals and a supporting plate used for increasing the stress area of the bottoms of the supporting legs. The supporting plate is fixedly connected with the bottom ends of the supporting legs, a plurality of connecting reinforcing plates fixedly welded to the supporting legs are evenly arranged on the top of the supporting plate in the circumferential direction, a lifting device is arranged at the top end of each supporting leg, and buffering supports in one-to-one correspondence with the lifting devices are arranged at the bottom end of a frame of the belt conveyor. And the buffer bracket is bolted and fixed with a lifting rod of the lifting device. Through the arrangement of the buffer support, the force borne by the belt conveyor during feeding can be effectively reduced, when the lifting device lifts upwards, vibration and impact can be relieved, the assembling error is reduced, and the overall service life of the conveying line is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a special transportation line for automobile chassis. Background Art

[0002] The combined assembly process is the most complex process in the final assembly workshop. The components such as the front and rear suspensions of the chassis are "combined" and "assembled" with the body, directly affecting the production output, quality and efficiency. The integral combined assembly has high requirements for the body accuracy, component accuracy, pallet accuracy and positioning system. The integral static combined assembly system includes a conveying system and key components, etc. Among them, the automobile chassis transportation line is particularly important. Existing types of chassis transportation lines lack sufficient buffering capacity. Content of the Utility Model

[0003] The purpose of the utility model is to provide a special transportation line for automobile chassis to solve the problems existing in the above-mentioned prior art.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions:

[0005] A special transportation line for automobile chassis includes a support frame, a belt conveyor arranged at the top of the support frame, and a loading device arranged at one end of the belt conveyor. The support frame is composed of legs evenly distributed at equal intervals along the length direction of the belt conveyor and a support plate for increasing the stress area at the bottom of the legs. The support plate is fixedly connected to the bottom end of the legs. A plurality of connection strengthening plates welded and fixed to the legs are evenly arranged in the circumferential direction on the top of the support plate. A lifting device is arranged at the top end of each leg. A buffer bracket corresponding to the lifting device one by one is arranged at the bottom end of the frame of the belt conveyor. The buffer bracket is bolted and fixed to the lifting rod of the lifting device.

[0006] By adopting the above technical solutions, the lifting device can lift the entire belt conveyor upward, so as to realize the simultaneous combined assembly and tightening of multiple work positions. The buffer bracket arranged between the support frame and the bottom end of the frame of the belt conveyor can effectively reduce the vibration when the loading device places the automobile chassis on the transportation line, improve the overall operation life of the transportation line, and reduce the frequency of maintenance and repair.

[0007] In a further embodiment, the loading device includes a storage rack and a multi-axis robotic arm. The multi-axis robotic arm is arranged on the support frame. The storage rack is arranged at an interval from the support frame. A plurality of pallets are evenly arranged from top to bottom inside the storage rack. A transverse driving unit is oppositely arranged at the bottom of each pallet. The transverse driving unit is used to drive the pallet to displace transversely relative to the storage rack. A limiter is arranged at the bottom of the pallet. The limiter is used to limit the maximum distance between the pallet and the storage rack when they are farthest apart.

[0008] By adopting the above technical solution, when the multi-axis robotic arm needs to pick up the vehicle chassis on the storage rack, the pallet for holding the vehicle chassis will be laterally displaced in the direction close to the multi-axis robotic arm through the laterally driving unit arranged at the bottom, ensuring that the robotic arm can pick up the vehicle chassis from the pallet. In order to prevent the pallet from slipping off the storage rack during this process, a limiter is also provided at the bottom of the pallet to limit the maximum distance it can move.

[0009] In a further embodiment, a plurality of positioners are equidistantly arranged on the surface of the belt of the belt conveyor. The positioner includes a fixed block, a plurality of reset springs evenly distributed on the top of the fixed block, a mounting plate, a position detector and a locking jaw. The fixed block is fixedly connected to the belt of the belt conveyor, and the fixed block is hingedly fixed by a plurality of mutually fitting fixed strips. The mounting plate is arranged at an interval on the side of the fixed block away from the belt of the belt conveyor, and the mounting plate is fixedly connected to the reset spring. A driving module is arranged at the bottom of the mounting plate, the position detector is arranged on the top of the mounting plate, the locking jaw is fixedly installed on one side of the mounting plate, the driving module is used to drive the locking jaw, and positioning guide columns are arranged at the four corners of the top of the mounting plate.

[0010] By adopting the above technical solution, the positioners on the surface of the transport belt are used to position the vehicle chassis. Among them, the locking jaws on the fixing plate can be driven by a driving device. When the driving device acts, the locking jaws can firmly fix the vehicle chassis to be locked, and the fixed block can prevent the fixed block from jamming or pulling the belt when the belt is displaced to the rollers at both ends. The position detector in the positioner can ensure that the position of the vehicle chassis is consistent with the position of the vehicle body on the body hoisting line above the chassis transport line, facilitating subsequent general assembly and tightening.

[0011] In a further embodiment, the top end of the positioning guide column is set as a conical surface.

[0012] By adopting the above technical solution, the top end of the conical surface can bear a certain pressure, and at the same time, the requirements for the positioning holes are not very high, and a certain error can be tolerated.

[0013] In a further embodiment, a plurality of universal wheels are arranged at the bottom of the storage rack.

[0014] By adopting the above technical solution, the storage rack needs to have the ability to change its position to a certain extent. When the production line is adjusted and the position of the storage rack needs to be moved, the universal wheels at the bottom of the storage rack can provide the ability to move within a small range. At the same time, these universal wheels have good pressure-bearing capacity and can operate normally when fully loaded.

[0015] In a further embodiment, a driving motor for driving the rotation of the universal wheels is arranged at the bottom of the storage rack.

[0016] By adopting the above technical solution, when the storage rack is full, since the pressure it bears is relatively high, it is very difficult to manually turn the universal wheels. If a dedicated motor is used to drive the universal wheels and adjust their facing positions, the turning of the universal wheels can be safely and efficiently completed instead of manual means. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure in a special transportation line for an automobile chassis of the present utility model;

[0018] Figure 2 is a schematic diagram showing the structures of the support frame and the positioner in a special transportation line for an automobile chassis of the present utility model;

[0019] Figure 3 is a schematic diagram showing the structure of the loading device in a special transportation line for an automobile chassis of the present utility model.

[0020] In the figure, 1. Support frame; 11. Legs; 12. Support plate; 13. Buffer bracket; 14. Lifting device; 2. Belt conveyor; 3. Loading device; 31. Storage rack; 32. Multi-axis robotic arm; 33. Pallet; 34. Lateral drive unit; 35. Limiter; 4. Positioner; 41. Return spring; 42. Mounting plate; 43. Position detector; 44. Drive module; 45. Locking jaw; 46. Positioning guide post; 5. Universal wheel; 6. Drive motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] Among them, the same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "bottom surface" and "top surface", "inner" and "outer" respectively refer to the directions facing or away from the geometric center of a specific component. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this specification, "a plurality" means two or more unless otherwise specifically defined. Figure 1

[0023] Embodiment:

[0024] Figures 1 - 3 As Figures 1 - 3As shown in the figure, a special transportation line for an automobile chassis includes a support frame 1, a belt conveyor 2 arranged at the top of the support frame 1, and a feeding device 3 arranged at one end of the belt conveyor 2. The support frame 1 is composed of legs 11 evenly distributed along the length direction of the belt conveyor 2 and a support plate 12 for increasing the stress area at the bottom of the legs 11. The support plate 12 is fixedly connected to the bottom end of the legs 11. A plurality of connecting reinforcing plates welded and fixed to the legs 11 are evenly arranged circumferentially on the top of the support plate 12. A lifting device 14 is arranged at the top end of each leg 11. A buffer bracket 13 corresponding to the lifting device 14 one by one is arranged at the bottom end of the frame of the belt conveyor 2. The buffer bracket 13 is bolted and fixed to the lifting rod of the lifting device 14. A plurality of positioners 4 are evenly arranged at intervals on the belt surface of the belt conveyor 2. The positioner 4 includes a fixed block, a plurality of reset springs 41 evenly distributed on the top of the fixed block, a mounting plate 42, a position detector 43, and a locking jaw 45. The fixed block is fixedly connected to the belt of the belt conveyor 2, and the fixed block is composed of a plurality of mutually fitting fixed strips hinged and fixed. The mounting plate 42 is arranged at intervals on the side of the fixed block away from the belt of the belt conveyor 2, and the mounting plate 42 is fixedly connected to the reset spring 41. A driving module 44 is arranged at the bottom of the mounting plate 42. The position detector 43 is arranged on the top of the mounting plate 42. The locking jaw 45 is fixedly installed on one side of the mounting plate 42. The driving module 44 is used to drive the locking jaw 45. Position guiding columns 46 are arranged at the four corners of the top of the mounting plate 42. The top end of the position guiding column 46 is set as a conical surface. The feeding device 3 transports the automobile chassis onto the belt conveyor 2, and the bottom end of the frame of the belt conveyor 2 is arranged on the buffer bracket 13 on the support frame 1. A lifting device 14 is also arranged between the support frame 1 and the buffer bracket 13. When the automobile chassis and the automobile body are transported to the corresponding positions, the position detector 43 sends a signal, and the lifting device 14 starts to operate, lifting the entire belt conveyor 2 upward, so that the automobile chassis and the body are accurately aligned. Since the locking jaw 45 on the positioner 4 firmly fixes the automobile chassis, the position of the automobile chassis will be firmly fixed during the movement process and will not shift.

[0025] As Figures 1 - 3As shown in the figure, the feeding device 3 includes a storage rack 31 and a multi-axis robotic arm 32. The multi-axis robotic arm 32 is arranged on the support frame 1, and the storage rack 31 is arranged at an interval from the support frame 1. Inside the storage rack 31, a plurality of pallets 33 are arranged at equal intervals from top to bottom. At the bottom of each pallet 33, a lateral driving unit 34 is oppositely arranged. The lateral driving unit 34 is used to drive the pallet 33 to displace laterally relative to the storage rack 31. A limiter 35 is arranged at the bottom of the pallet 33, and the limiter 35 is used to limit the maximum distance between the pallet 33 and the storage rack 31. A plurality of universal wheels 5 are arranged at the bottom of the storage rack 31, and a driving motor 6 for driving the universal wheels 5 to rotate is arranged at the bottom of the storage rack 31. The pallet 33 on the storage rack 31 can move laterally by means of the lateral driving unit 34, so as to facilitate the multi-axis robotic arm 32 to clamp the vehicle chassis on the pallet 33 and place it on the belt conveyor 2. At the same time, the limiter 35 at the bottom of the pallet 33 can limit the moving distance of the pallet 33 to prevent it from accidentally detaching from the storage rack 31. The universal wheels 5 arranged at the bottom of the storage rack 31 can help the storage rack 31 to move, and the driving motor 6 can assist the universal wheels 5 to turn.

[0026] Specific implementation process: The vehicle chassis is initially stored on the pallet 33 of the storage rack 31. The pallet 33 can move laterally according to the lateral driving unit 34. A limiter 35 is arranged at the bottom of the pallet 33, which can limit the moving position of the pallet 33 within a certain distance. The multi-axis robotic arm 32 clamps the vehicle chassis on the pallet 33 and places it on the belt conveyor, thus completing the feeding. A buffer bracket 13 is arranged at the bottom of the belt conveyor 2, and a lifting device 14 is also arranged at the top of the support frame 1. The top of the lifting device 14 is fixedly connected to the buffer bracket 13, which can lift the entire belt conveyor 2, so as to cooperate with the body hoisting line above to complete the assembly. The feeding device 3 places the vehicle chassis on the locator 4 of the belt conveyor 2. The locking jaws 45 are driven by the driving module 44 to fix the vehicle chassis, and the real-time position of the vehicle chassis is detected by the position detector 43 to match the body on the body hoisting line.

[0027] In the embodiments disclosed in the present invention, terms such as "installation", "connection", "connection", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments disclosed in the present invention can be understood according to specific circumstances.

[0028] This specific embodiment is only an explanation of the present utility model and does not limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment that do not contribute creatively as needed, but as long as it is within the scope of the claims of the present utility model, it is protected by the patent law.

Claims

1. A special transportation line for an automobile chassis, comprising a support frame (1), a belt conveyor (2) arranged at the top of the support frame (1), and a feeding device (3) arranged at one end of the belt conveyor (2), characterized in that: The support frame (1) is composed of legs (11) evenly distributed at equal intervals along the length direction of the belt conveyor (2) and a support plate (12) for increasing the force-bearing area at the bottom of the legs (11). The support plate (12) is fixedly connected to the bottom end of the legs (11). A plurality of connection strengthening plates welded and fixed to the legs (11) are evenly arranged circumferentially on the top of the support plate (12). A lifting device (14) is provided at the top end of each leg (11). A buffer support (13) corresponding to the lifting device (14) one by one is provided at the bottom end of the frame of the belt conveyor (2). The buffer support (13) is bolted and fixed to the lifting rod of the lifting device (14).

2. The special transportation line for an automobile chassis according to claim 1, wherein: The feeding device (3) includes a storage rack (31) and a multi-axis robotic arm (32). The multi-axis robotic arm (32) is arranged on the support frame (1). The storage rack (31) is arranged at an interval from the support frame (1). A plurality of pallet boards (33) are evenly arranged at equal intervals from top to bottom inside the storage rack (31). A transverse driving unit (34) is oppositely arranged at the bottom of each pallet board (33). The transverse driving unit (34) is used to drive the pallet board (33) to displace transversely relative to the storage rack (31). A stopper (35) is arranged at the bottom of the pallet board (33). The stopper (35) is used to limit the maximum distance of separation between the pallet board (33) and the storage rack (31).

3. The special transportation line for an automobile chassis according to claim 1, characterized in that: A plurality of positioners (4) are evenly arranged at equal intervals on the belt surface of the belt conveyor (2). The positioner (4) includes a fixed block, a plurality of return springs (41) evenly distributed on the top of the fixed block, a mounting plate (42), a position detector (43), and a locking jaw (45). The fixed block is fixedly connected to the belt of the belt conveyor (2), and the fixed block is composed of a plurality of mutually fitting fixed strips hinged and fixed. The mounting plate (42) is arranged at an interval on the side of the fixed block away from the belt of the belt conveyor (2), and the mounting plate (42) is fixedly connected to the return spring (41). A driving module (44) is arranged at the bottom of the mounting plate (42). The position detector (43) is arranged on the top of the mounting plate (42). The locking jaw (45) is fixedly installed on one side of the mounting plate (42). The driving module (44) is used to drive the locking jaw (45). Position guiding columns (46) are arranged at the four corners of the top of the mounting plate (42).

4. The special transportation line for an automobile chassis according to claim 3, characterized in that: The top end of the position guiding column (46) is set as a conical surface.

5. The special transportation line for an automobile chassis according to claim 2, wherein: A plurality of universal wheels (5) are arranged at the bottom of the storage rack (31).

6. The special transportation line for an automobile chassis according to claim 5, characterized in that: A driving motor (6) for driving the universal wheels (5) to rotate is arranged at the bottom of the storage rack (31).

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