A vehicle production line capable of replacing front and rear station power transmission devices

Abstract

The application provides an automobile production line capable of replacing a front and rear power transmission device, relates to the technical field of automobile part processing, and has a front work station, a middle work station and a rear work station. The first roller supporting device is arranged at the front work station. The second roller supporting device is arranged on the ground of the middle work station and comprises a pair of left and right symmetrical second roller supporting units. The third roller supporting device is arranged at the rear work station. The middle power transmission device is arranged between the two second roller supporting units. The middle power transmission device can switch the slide and the vehicle model clamp on the slide between the three work stations. The power structure of the production line is only the power motor at the middle work station, and the transmission structure is only the chain at the middle work station. Compared with the prior art, the operation cost of the production line is lower.

Description

Technical Field

[0001] This invention relates to the field of automotive parts processing technology, and more specifically, to an automotive production line that can replace the power transmission devices at the front and rear workstations. Background Technology

[0002] With the development of the automotive manufacturing industry and market demands, car manufacturers need to develop various models while simultaneously improving production pace and efficiency. This necessitates increasingly higher levels of automation. To enhance production efficiency and enable multi-model co-production, most car manufacturers utilize roller conveyor lines for automotive welding processes. However, achieving co-production of multiple models increases the number of welding steps and rollers. Most existing car manufacturers use a motor on each roller to drive various shafts and fixed rollers via toothed belts and pulleys. Transmission is achieved through rolling friction transmission via skids supported on the rollers (each skid has a fixture corresponding to a specific car model). This type of production line requires a power structure (such as the aforementioned motor) at each station to drive the transmission structure, thereby rotating the rollers on each roller to transmit the skids. This results in high production line costs, especially with the increasing number of multi-model production processes, which further necessitates more roller power structures and transmission structures, leading to extremely high equipment operating costs. Summary of the Invention

[0003] The present invention aims to solve the problem that existing automobile production lines require each workstation to be equipped with a roller power structure and a transmission structure when transferring data between multiple workstations, which leads to high equipment operating costs.

[0004] To solve the above problems, the present invention provides an automobile production line that can replace the power transmission device at the front and rear workstations, including a front workstation, a middle workstation, a rear workstation, a skid, rollers and a middle power transmission device. The upper side of the skid is used to install the vehicle model clamp, and the lower side of the skid is provided with four positioning components arranged in a rectangle. Each positioning component includes a pair of positioning parts spaced apart front to back. The four positioning components are a left front positioning component, a right front positioning component, a left rear positioning component and a right rear positioning component.

[0005] A first roller support device is provided at the front workstation, and a first roller group is provided on the first roller support device, the first roller group including multiple rollers; a second roller support device is provided on the ground of the middle workstation, the second roller support device including a pair of second roller support units arranged symmetrically from left to right, the second roller support units being provided with a second roller group, the second roller group including multiple rollers; a third roller support device is provided at the rear workstation, the third roller support device being provided with a third roller group, the third roller group including multiple rollers, wherein the axial direction of all rollers in the first roller group, the second roller group, and the third roller group is transverse;

[0006] The intermediate power transmission device is disposed between the two second roller support units. The intermediate power transmission device includes a power base, a front chain shaft, a rear chain shaft, a chain, a power motor, a first insertion assembly, and a second insertion assembly. The front chain shaft and the rear chain shaft are rotatably connected to the power base, and the chain drives the front chain shaft and the rear chain shaft. The power motor is disposed on the power base and is driven by either the front chain shaft or the rear chain shaft. The first insertion assembly and the second insertion assembly are respectively disposed on the chain. The plug-in components are located on the left and right sides of the line connecting the front chain shaft and the rear chain shaft, respectively. The first plug-in component is used to extend and retract to insert or remove between the two positioning parts of the left front positioning component or the left rear positioning component. The second plug-in component is used to extend and retract to insert or remove between the two positioning parts of the right front positioning component or the right rear positioning component. When the skid is on the second roller support device, the first plug-in component and the second plug-in component are used to laterally align with the two calibration positioning components at the same time. The two calibration positioning components are two positioning components arranged diagonally.

[0007] The present invention provides an automobile production line that can replace the power transmission device at the front and rear workstations, and compared with the prior art, has the following technical effects, but is not limited to:

[0008] The automobile production line has at least three stations: a front station, a middle station, and a rear station. The first roller support device at the front station is longitudinally aligned with the second roller support device at the middle station, and the third roller support device at the rear station is longitudinally aligned with the second roller support device at the middle station. The front or rear chain shaft can be driven by a power motor to rotate, thereby driving the chain to move. The movement of the chain moves the first insertion assembly to the left front end of the middle station, while the second insertion assembly moves to the right rear end of the middle station.

[0009] When the skid is on the first roller support device at the front station, if the skid and the vehicle fixture on it need to be switched to the middle station, since the first roller support device is longitudinally aligned with the second roller support device at the middle station, the first plug-in component at the left front end of the middle station can be extended laterally to insert between the two positioning parts in the left rear positioning component at the bottom of the skid. Then, the chain can be driven to rotate counterclockwise by reversing the power motor. The counterclockwise rotating chain will drive the skid to gradually move from the roller of the first roller support device to the roller of the second roller support device through the extended first plug-in component. When the counterclockwise rotating chain drives the extended first plug-in component to the left rear end of the middle station (at this time, the second plug-in component is driven by the chain to the right front end of the middle station and is laterally aligned with the right front positioning component), the skid is completely driven longitudinally by the first plug-in component to the second roller support device at the middle station. At this time, the power motor can be stopped, and the workers at the middle station can then work on the car parts on the vehicle fixture on the upper side of the skid. During the process of the skid moving from the front station to the rear station, all the rollers are passively rotated. The skid is pulled by the extended first plug-in component. During the process of the skid moving from the front station to the middle station, its power structure is only the power motor at the middle station, and the transmission structure is only the chain at the middle station. Compared with the existing technology, the operating cost of the production line is lower.

[0010] When the skid is on the second roller support device at the middle station, if the skid and the vehicle fixture on it need to be switched to the rear station, since the third roller support device at the rear station is longitudinally aligned with the second roller support device at the middle station, the first insertion component at the left rear end of the middle station can be controlled to retract laterally, thereby moving out from between the two positioning parts in the left rear positioning component at the bottom of the skid. This allows the second insertion component at the right front end of the middle station, which is laterally aligned with the right front positioning component, to extend and insert between the two positioning parts in the right front positioning component. Then, the chain can be driven clockwise by the forward rotation of the power motor. The chain, rotating clockwise, drives the sled from the rollers of the second roller support device to the rollers of the third roller support device via the extended second connector. When the clockwise-rotating chain moves the extended second connector to the right rear end of the intermediate station (at this time, the first connector is driven by the chain to the left front end of the intermediate station and is laterally aligned with the left front positioning component), the sled is completely driven longitudinally by the second connector to the third roller support device at the rear station. At this point, the control motor can be stopped, and the workers at the rear station can then work on the automotive parts on the vehicle fixture above the sled. During the movement of the sled from the intermediate station to the rear station, all rollers rotate passively, and the sled is propelled by the extended second connector. The power structure for the sled's movement from the intermediate station to the rear station is solely the power motor at the intermediate station, and the transmission structure is solely the chain at the intermediate station. Compared to existing technologies, this results in lower operating costs for the production line.

[0011] When the skid is on the third roller support device at the rear station, if the skid and the vehicle fixture on it need to be switched to the middle station, since the third roller support device at the rear station is longitudinally aligned with the second roller support device at the middle station, the second insertion component at the right rear end of the middle station can be controlled to extend laterally, thereby inserting between the two positioning parts in the left front positioning component at the bottom of the skid, and causing the first insertion component at the left front end of the middle station to retract. Then, the chain can be driven to rotate counterclockwise by reversing the power motor. The counterclockwise rotating chain will be driven by the extended... The second connector component drives the skid to gradually move from the roller of the third roller support device to the roller of the second roller support device. When the counterclockwise rotating chain drives the extended second connector component to the right front end of the intermediate station (at this time, the first connector component is driven by the chain to the left rear end of the intermediate station and is laterally aligned with the left rear positioning component), the skid is completely driven longitudinally by the second connector component to the second roller support device at the intermediate station. At this point, the control motor can be stopped, and the workers at the intermediate station can then work on the car parts on the vehicle fixture on the upper side of the skid. During the process of the skid moving from the rear station to the intermediate station, all rollers rotate passively, and the skid is pulled by the extended second connector component. During the process of the skid moving from the rear station to the intermediate station, the power structure is only the power motor at the intermediate station, and the transmission structure is only the chain at the intermediate station. Compared with existing technologies, the operating cost of the production line is lower.

[0012] When the skid is on the second roller support device at the middle station, if the skid and the vehicle fixture on it need to be switched to the front station, since the first roller support device at the front station is longitudinally aligned with the second roller support device at the middle station, the second insertion component at the right rear end of the middle station can be controlled to retract laterally, and the first insertion component at the left rear end of the middle station can be extended to insert between the two positioning parts in the left rear positioning component. Then, the chain can be driven to rotate clockwise by the forward rotation of the power motor. The clockwise rotating chain will pass through the extended first roller support device. A connecting component drives a skid to gradually move from the rollers of the second roller support device to the rollers of the first roller support device. When the clockwise rotating chain moves the extended first connecting component to the left front end of the intermediate station (at this time, the first connecting component is driven by the chain to the right rear end of the intermediate station and is laterally aligned with the right rear positioning component), the skid is completely driven longitudinally by the first connecting component to the first roller support device at the front station. At this point, the control motor can be stopped, and the workers at the front station can then work on the automotive parts on the vehicle fixture above the skid. During the process of the skid moving from the intermediate station to the front station, all rollers rotate passively, and the skid is pushed by the extended first connecting component. During the process of the skid moving from the intermediate station to the front station, the power structure is only the power motor at the intermediate station, and the transmission structure is only the chain at the intermediate station. Compared with existing technologies, the operating cost of the production line is lower.

[0013] Furthermore, a transverse guide rail and a transverse drive device are provided on the ground of the front workstation, and at least one first roller support device is provided on the transverse guide rail. The transverse drive device is used to drive the first roller support device to move laterally along the transverse guide rail.

[0014] A turntable is provided on the ground at the rear workstation. Two third roller support devices are provided and located on the top of the turntable. The two third roller support devices are symmetrically arranged about the axis of the turntable, and the turntable is used to rotate so that the two third roller support devices are longitudinally aligned with the second roller support device.

[0015] Furthermore, the first roller support device includes two first roller mounting longitudinal beams and a first cross beam. The two first roller mounting longitudinal beams are connected through the first cross beam, and the plurality of rollers in the first roller group are respectively mounted on the two first roller mounting longitudinal beams.

[0016] The bottom surface of the skid is also provided with a pair of longitudinally arranged longitudinal sliding plates that are symmetrically arranged on the left and right sides. The distance between the two longitudinal sliding plates is greater than the distance between the left front positioning component and the right front positioning component. The two longitudinal sliding plates are used to support the roller.

[0017] A longitudinal limiting structure is provided at the front end of one of the first roller mounting longitudinal beams, and a longitudinal limiting structure is provided at the rear end of the other first roller mounting longitudinal beam. The longitudinal limiting structure includes a longitudinal baffle, a baffle mounting plate, and a pin. The baffle mounting plate is installed at the end of the first roller mounting longitudinal beam and is spaced apart from the end of the first roller mounting longitudinal beam. The longitudinal baffle is located between the baffle mounting plate and the end of the first roller mounting longitudinal beam. The pin passes through the baffle mounting plate and the longitudinal baffle in sequence and is connected to the first roller mounting longitudinal beam. A baffle caster is provided at the bottom of the longitudinal baffle.

[0018] A caster bracket is also provided on the ground of the front workstation. The top of the caster bracket has a support plane, and the left and right ends of the support plane are respectively provided with ramps. When the two first roller mounting beams are respectively aligned longitudinally with the corresponding second roller support units, the baffle caster travels to the support plane through the ramps, and the longitudinal baffle rotates relative to the first roller mounting beams until the top of the longitudinal baffle is lower than the bottom height of the longitudinal slide plate.

[0019] Furthermore, the intermediate power transmission device also includes a first longitudinal slide rail and a second longitudinal slide rail, the first longitudinal slide rail and the second longitudinal slide rail are respectively disposed on the left and right sides of the chain, the first longitudinal slide rail and the second longitudinal slide rail are respectively connected to the power base, a first slider is slidably connected on the first longitudinal slide rail, the first slider is connected to the first plug-in assembly, a second slider is slidably connected on the second longitudinal slide rail, and the second slider is connected to the second plug-in assembly;

[0020] And / or, the intermediate power transmission device further includes two chain longitudinal guide plates, which are disposed on the inner side of the chain, are connected to the power base, and have chain grooves matching the chain on opposite sides of the two chain guide plates.

[0021] Furthermore, the intermediate power transmission device further includes a first circular proximity switch, a first proximity switch bracket, a second circular proximity switch, a second proximity switch bracket, a third circular proximity switch, a third proximity switch bracket, a fourth circular proximity switch, a fourth proximity switch bracket, a fifth circular proximity switch, a fifth proximity switch bracket, a sixth circular proximity switch, and a sixth proximity switch bracket. The first circular proximity switch is connected to the power base via the first proximity switch bracket. The first circular proximity switch is located near the right rear part of the chain. When the first plug-in component moves longitudinally to the front end of the intermediate station, the first circular proximity switch is triggered by the first plug-in component. The second circular proximity switch is connected to the power base via the second proximity switch bracket. The second circular proximity switch is located near the right middle part of the chain. When the first plug-in component moves longitudinally to the middle part of the intermediate station, the second circular proximity switch is triggered by the first plug-in component. The third circular proximity switch is connected to the power base via the third proximity switch bracket. The third circular proximity switch is located near the front right part of the chain. When the first plug-in component moves longitudinally to the rear end of the intermediate station, the third circular proximity switch is triggered by the first plug-in component. The fourth circular proximity switch is connected to the power base via the fourth proximity switch bracket. The fourth circular proximity switch is located near the middle left part of the chain. When the second plug-in component moves longitudinally to the middle part of the intermediate station, the fourth circular proximity switch is triggered by the second plug-in component. The fifth circular proximity switch is connected to the power base via the fifth proximity switch bracket. The fifth circular proximity switch is located near the front left part of the chain. When the second plug-in component moves longitudinally to the rear end of the intermediate station, the fifth circular proximity switch is triggered by the second plug-in component. The sixth circular proximity switch is connected to the power base via the sixth proximity switch bracket. The sixth circular proximity switch is located near the rear left part of the chain. When the second plug-in component moves longitudinally to the front end of the intermediate station, the sixth circular proximity switch is triggered by the second plug-in component.

[0022] Furthermore, the intermediate power transmission device also includes a first position detection switch, which is disposed on the power base. The bottom surface of the skid is also provided with a position detection circuit board. The position of the skid at the intermediate work station is detected by mutual sensing between the first position detection switch and the position detection circuit board.

[0023] Furthermore, it also includes a first lateral positioning mechanism, which is disposed on the power base and located on one side of the chain. The first lateral positioning mechanism includes two first lateral positioning groups arranged front and rear. Each first lateral positioning group includes a first lateral positioning base, and a pair of first lateral positioning wheels arranged laterally are disposed on the top of the first lateral positioning base.

[0024] The bottom surface of the skid is provided with a transverse positioning block. Two transverse positioning blocks are arranged at intervals. When one transverse positioning block moves longitudinally between two first transverse positioning wheels in one first transverse positioning group, the other transverse positioning block is located between two first transverse positioning wheels in another first transverse positioning group.

[0025] Furthermore, the bottom surface of the skid is provided with a longitudinal positioning block, which is located between the two transverse positioning blocks; the automobile production line that can replace the power transmission device of the front and rear workstations also includes a first longitudinal positioning mechanism, which is located between the two first transverse positioning groups. The first longitudinal positioning mechanism includes a first cylinder support, a first clamping cylinder, and a first clamping block. The first cylinder support is mounted on the power base, and the two first clamping cylinders are mounted on the first cylinder support. The two first clamping cylinders respectively drive and connect to one of the first clamping blocks, so that the two first clamping blocks are raised and clamped and fixed in the longitudinal direction.

[0026] Furthermore, a turntable support is provided on the top of the turntable, the turntable support includes two turntable longitudinal beams and a turntable transverse beam, the two turntable longitudinal beams are connected by multiple turntable transverse beams, and the two third roller support devices are provided on the turntable support;

[0027] The third roller support device includes two third roller mounting beams, a second position detection switch, a second lateral positioning mechanism, and a second longitudinal positioning mechanism. The second position detection switch, the second lateral positioning mechanism, and the second longitudinal positioning mechanism are respectively disposed on the turntable crossbeam. When the skid is on the third roller support device, the second position detection switch and the position detection circuit board sense each other to detect the position of the skid at the rear station. The second lateral positioning mechanism cooperates with the lateral positioning block to position the skid laterally, and the second longitudinal positioning mechanism cooperates with the longitudinal positioning block to position the skid longitudinally.

[0028] Furthermore, the automotive production line that can replace the power transmission devices at the front and rear workstations also includes a quick-connect mechanism. There are three quick-connect mechanisms, namely a first quick-connect mechanism, a second quick-connect mechanism, and a third quick-connect mechanism. The first quick-connect mechanism is located on the side of the second roller support unit away from the intermediate power transmission device. The second quick-connect mechanism and the third quick-connect mechanism are respectively located at the two third roller support devices.

[0029] The quick-connect mechanism includes a quick-connect cylinder support, a quick-connect cylinder, and a quick-connect unit. The quick-connect cylinder is disposed on the quick-connect cylinder support, and the quick-connect unit is connected to the output end of the quick-connect cylinder. The bottom surface of the skid is provided with a quick-connect mating unit, and the quick-connect cylinder is used to drive the quick-connect unit to connect and conduct electricity with the quick-connect mating unit.

[0030] The turntable bracket is provided with two fixed ends for vehicle model recognition switches. The two fixed ends for vehicle model recognition switches correspond to the two third roller support devices respectively. The bottom surface of the skid is provided with a movable end for vehicle model recognition switches. The fixed ends for vehicle model recognition switches are used to sense the movable ends for vehicle model recognition switches in order to identify the type of vehicle model clamp on the skid corresponding to the third roller support device. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of an automobile production line according to an embodiment of the present invention;

[0032] Figure 2 This is a partial structural schematic diagram of an automobile production line according to an embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of the connection structure between the first roller support device and the transverse guide rail according to an embodiment of the present invention;

[0034] Figure 4 for Figure 3 Enlarged view at point M;

[0035] Figure 5 This is a schematic diagram of the intermediate power transmission device according to an embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the structure of the first longitudinal positioning mechanism according to an embodiment of the present invention;

[0037] Figure 7 This is a schematic diagram of the structure of the first lateral positioning mechanism according to an embodiment of the present invention;

[0038] Figure 8 This is a schematic diagram of the quick-connect mechanism according to an embodiment of the present invention;

[0039] Figure 9This is a schematic diagram of the structure of the skid according to an embodiment of the present invention;

[0040] Figure 10 This is a schematic diagram of the structure of the third roller support device according to an embodiment of the present invention;

[0041] Figure 11 This is a partial structural diagram of the first roller support device and the second roller support device when they are longitudinally aligned according to an embodiment of the present invention;

[0042] Figure 12 This is a partial structural diagram of the third roller support device and the second roller support device when they are longitudinally aligned according to an embodiment of the present invention.

[0043] Explanation of reference numerals in the attached figures:

[0044] A. Front workstation; B. Middle workstation; C. Back workstation;

[0045] 1. First roller support device; 101. First roller mounting beam; 102. First crossbeam; 103. Traveling wheel; 104. Lateral movement drive device; 105. Lateral guide rail; 106. Longitudinal limiting structure; 1061. Longitudinal baffle; 1062. Baffle mounting plate; 1063. Pin shaft; 1064. Baffle caster; 107. Caster bracket; 1071. Bracket plane; 1072. Sloping surface;

[0046] 2. Second roller support unit;

[0047] 3. Third roller support device; 301. Third roller mounting beam; 302. Second position detection switch; 303. Second transverse positioning mechanism; 304. Second longitudinal positioning mechanism;

[0048] 4. Intermediate power transmission device; 401. Power base; 402. Front chain shaft; 403. Rear chain shaft; 404. Chain; 405. Power motor; 41. First plug-in assembly; 42. Second plug-in assembly; 431. First longitudinal slide rail; 4311. First slider; 432. Second longitudinal slide rail; 4321. Second slider; 433. Chain longitudinal guide plate; 441. First circular proximity switch; 442. Second circular proximity switch; 443. Third circular proximity switch; 444. Fourth circular proximity switch; 445. Fifth circular proximity switch; 446. Sixth circular proximity switch; 451. First position detection switch;

[0049] 5. Turntable; 51. Turntable longitudinal beam; 52. Turntable crossbeam; 53. Vehicle model recognition switch mounting end;

[0050] 6. Skid; 61. Positioning assembly; 611. Positioning part; 62. Longitudinal slide plate; 631. Position detection circuit board; 632. Lateral positioning block; 633. Longitudinal positioning block; 634. Quick-connect fitting unit; 635. Vehicle model recognition switch movable end;

[0051] 71. First transverse positioning mechanism; 711. First transverse positioning group; 7111. First transverse positioning base; 7112. First transverse positioning wheel; 72. First longitudinal positioning mechanism; 721. First cylinder support; 722. First clamping cylinder; 723. Clamping block;

[0052] 8. Quick-connect mechanism; 81. Quick-connect cylinder support; 82. Quick-connect cylinder; 83. Quick-connect unit;

[0053] 9. Vehicle model clamp; 10. Roller. Detailed Implementation

[0054] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0055] In the description of this invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", 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 invention 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 invention.

[0056] Furthermore, in the attached diagram, the X-axis represents the vertical direction, that is, the front-to-back direction, with the positive direction of the X-axis representing the front and the negative direction representing the back; the Y-axis represents the horizontal direction, that is, the left-to-right direction, with the positive direction of the Y-axis representing the left and the negative direction representing the right; and the Z-axis represents the vertical direction, that is, the up-down direction, with the positive direction of the Z-axis representing the up and the negative direction representing the down.

[0057] It should also be noted that the aforementioned X-axis, Y-axis and Z-axis are used only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0058] In existing technology, each of the front, middle, and rear stations of an automotive production line is equipped with a roller bed. Each roller bed includes multiple longitudinally arranged rollers, and each roller bed has an active rotation structure. That is, each roller bed is equipped with a power structure and a transmission structure. In each roller bed, the power structure drives all the rollers, and then the power structure is driven by the transmission structure. Ultimately, the roller bed drives the transmission structure through its own power structure to drive all the rollers to rotate actively. All the rollers at each station are driven to rotate actively by the power structure of their respective station, thus enabling the skid and the vehicle model fixture on the skid to switch between adjacent stations. Although this existing automotive production line technology can achieve the switching of skids between adjacent stations, the equipment operating costs are extremely high because each station requires an independent power structure and transmission structure.

[0059] Based on the above issues, see Figure 1-2 , Figure 5 , Figure 9 and Figure 11-12 An automobile production line that can replace the power transmission device at the front and rear workstations according to an embodiment of the present invention includes a front workstation A, a middle workstation B, a rear workstation C, a skid 6, rollers 10, and a middle power transmission device 4. The upper side of the skid 6 is used to install the vehicle model clamp 9, and the lower side of the skid 6 is provided with four positioning components 61 arranged in a rectangle. Each positioning component 61 includes a pair of positioning parts 611 arranged at intervals. The four positioning components 61 are a left front positioning component, a right front positioning component, a left rear positioning component, and a right rear positioning component.

[0060] A first roller support device 1 is provided at the front workstation A, and a first roller group is provided on the first roller support device 1. The first roller group includes multiple rollers 10. A second roller support device is provided on the ground of the intermediate workstation B. The second roller support device includes a pair of second roller support units 2 arranged symmetrically on the left and right. A second roller group is provided on the second roller support unit 2. The second roller group includes multiple rollers 10. A third roller support device 3 is provided at the rear workstation C. A third roller group is provided on the third roller support device 3. The third roller group includes multiple rollers 10. The axial direction of all rollers 10 in the first roller group, the second roller group, and the third roller group is transverse.

[0061] The intermediate power transmission device 4 is disposed between the two second roller support units 2. The intermediate power transmission device 4 includes a power base 401, a front chain shaft 402, a rear chain shaft 403, a chain 404, a power motor 405, a first insertion assembly 41, and a second insertion assembly 42. The front chain shaft 402 and the rear chain shaft 403 are rotatably connected to the power base 401, and the chain 404 drives the front chain shaft 402 and the rear chain shaft 403. The power motor 405 is disposed on the power base 401 and is drivenly connected to either the front chain shaft 402 or the rear chain shaft 403. The first insertion assembly 41 and the second insertion assembly 42 are respectively disposed on the chain 404. 2 are located on the left and right sides of the line connecting the front chain shaft 402 and the rear chain shaft 403, respectively. The first insertion component 41 is used to extend and retract to insert or remove between the two positioning parts 611 in the left front positioning component or the left rear positioning component. The second insertion component 42 is used to extend and retract to insert or remove between the two positioning parts 611 in the right front positioning component or the right rear positioning component. When the skid 6 is on the second roller support device, the first insertion component 41 and the second insertion component 42 are used to laterally align with the two calibration positioning components at the same time. The two calibration positioning components are two positioning components 61 arranged diagonally. The two positioning components arranged diagonally can be the left front positioning component and the right rear positioning component, or the left rear positioning component and the right front positioning component.

[0062] The working principle of the automotive production line in this embodiment, which can replace the power transmission devices at the front and rear workstations, is as follows:

[0063] This automobile production line has at least three workstations: a front workstation A, a middle workstation B, and a rear workstation C. The first roller support device 1 at the front workstation A is longitudinally aligned with the second roller support device at the middle workstation B, and the third roller support device 3 at the rear workstation C is longitudinally aligned with the second roller support device at the middle workstation B. Thus, the first and second insertion components 41 and 42 on the chain 404 of the intermediate power transmission device 4 can alternately engage with the corresponding positioning components 61, thereby enabling the skid 6 to switch between the three workstations during the alternating clockwise and counterclockwise rotation of the chain 404.

[0064] For example, the front chain shaft 402 or the rear chain shaft 403 can be driven to rotate by the power motor 405, thereby driving the chain 404 to move. The movement of the chain 404 will move the first insertion component 41 to the left front end of the intermediate station B, and at the same time move the second insertion component 42 to the right rear end of the intermediate station B. When the skid 6 is on the first roller support device 1 at the front station A, if the skid 6 and the vehicle fixture on the skid 6 need to be switched to the intermediate station B, since the first roller support device 1 and the second roller support device at the intermediate station B are longitudinally aligned, the first insertion component 41 at the left front end of the intermediate station B can be controlled to extend laterally to insert between the two positioning parts 611 in the left rear positioning component at the bottom of the skid 6. Then, the chain 404 can be driven counterclockwise by reversing the power motor 405. The counter-clockwise rotating chain 404 will drive the slide 6 to gradually move from the roller of the first roller support device 1 to the roller of the second roller support device through the extended first plug-in component 41. When the counter-clockwise rotating chain 404 drives the extended first plug-in component 41 to the left rear end of the intermediate station B (at this time, the second plug-in component 42 is driven by the chain 404 to the right front end of the intermediate station B and is laterally aligned with the right front positioning component, that is, at this time the first plug-in component 41 and the second plug-in component 42 are simultaneously laterally aligned with the two calibration positioning components), the slide 6 is completely driven longitudinally by the first plug-in component 41 to the second roller support device at the intermediate station B. At this time, the control motor 405 can be stopped, and the workers at the intermediate station B can then work on the car parts on the car model fixture on the upper side of the slide 6.

[0065] When the skid 6 is on the second roller support device at the intermediate station B, if the skid 6 and the vehicle clamp 9 on the skid 6 are to be switched to the rear station C, since the third roller support device 3 at the rear station C is longitudinally aligned with the second roller support device at the intermediate station B, the first insertion component 41 at the left rear end of the intermediate station B can be controlled to retract laterally, thereby moving out from between the two positioning parts 611 in the left rear positioning component at the bottom of the skid 6, and causing the second insertion component 42 at the right front end of the intermediate station B, which is laterally aligned with the right front positioning component, to extend and insert between the two positioning parts 611 in the right front positioning component. Then, the chain 404 can be driven to rotate clockwise by the forward rotation of the power motor 405. The clockwise rotating chain 404 will be driven by the extended first roller support device 3 at the rear station C. The second insertion assembly 42 drives the sliding skid 6 to gradually move from the roller 10 of the second roller support device to the roller 10 of the third roller support device 3. When the clockwise rotating chain 404 drives the extended second insertion assembly 42 to the right rear end of the middle station B (at this time, the first insertion assembly 41 is driven by the chain 404 to the left front end of the middle station B and is laterally aligned with the left front positioning assembly, that is, at this time, the first insertion assembly 41 and the second insertion assembly 42 are laterally aligned with the two calibration positioning assemblies at the same time), the sliding skid 6 is completely driven longitudinally by the second insertion assembly 42 to the third roller support device 3 at the rear station C. At this time, the control motor 405 can be stopped, and the workers at the rear station C can then work on the car parts on the car model clamp 9 on the upper side of the sliding skid 6.

[0066] When the skid 6 is on the third roller support device 3 at the rear station C, if the skid 6 and the vehicle fixture on the skid 6 are to be switched to the intermediate station B, since the third roller support device 3 at the rear station C is longitudinally aligned with the second roller support device at the intermediate station B, the second insertion component 42 at the right rear end of the intermediate station B can be controlled to extend laterally, thereby inserting between the two positioning parts 611 in the left front positioning component at the bottom of the skid 6, and causing the first insertion component 41 at the left front end of the intermediate station B to retract. Then, the chain 404 can be driven to rotate counterclockwise by the reverse rotation of the power motor 405. The counterclockwise rotating chain 404 will drive the skid 6 to gradually move from the third roller support device 3 to the intermediate station B through the extended second insertion component 42. The wheel support device 3 moves to the roller 10 of the second roller support device. When the counterclockwise rotating chain 404 drives the extended second plug assembly 42 to the right front end of the intermediate station B (at this time, the first plug assembly 41 is driven by the chain 404 to the left rear end of the intermediate station B and is laterally aligned with the left rear positioning assembly, that is, at this time, the first plug assembly 41 and the second plug assembly 42 are laterally aligned with the two calibration positioning assemblies at the same time), the slide 6 is completely driven longitudinally by the second plug assembly 42 to the second roller support device at the intermediate station B. At this time, the control motor 405 can be stopped, and the workers at the intermediate station B can then work on the car parts on the car model clamp 9 on the upper side of the slide 6.

[0067] When the slide 6 is on the second roller support device at the intermediate station B, if the slide 6 and the vehicle fixture on the slide 6 need to be switched to the front station A, since the first roller support device 1 at the front station A is longitudinally aligned with the second roller support device at the intermediate station B, the second insertion component 42 at the right rear end of the intermediate station B can be controlled to retract laterally, and the first insertion component 41 at the left rear end of the intermediate station B can be extended to insert between the two positioning parts 611 in the left rear positioning component. Then, the chain 404 can be driven to rotate clockwise by the forward rotation of the power motor 405. The clockwise rotating chain 404 will drive the slide 6 to gradually move from the second roller support device through the extended first insertion component 41. The device moves from the roller 10 to the roller 10 of the first roller support device 1. When the clockwise rotating chain 404 drives the extended first plug-in component 41 to the left front end of the intermediate station B (at this time, the first plug-in component 41 is driven by the chain 404 to the right rear end of the intermediate station B and is laterally aligned with the right rear positioning component, that is, at this time the first plug-in component 41 and the second plug-in component 42 are laterally aligned with the two calibration positioning components), the skid 6 is completely driven longitudinally by the first plug-in component 41 to the first roller support device 1 at the front station A. At this time, the control motor 405 can be stopped, and the workers at the front station A can then perform operations on the car parts on the car model clamp 9 on the upper side of the skid 6.

[0068] In summary, during the movement of the skid 6 from the front station A to the rear station C, all the rollers rotate passively, and the skid 6 is pulled by the extended first connector 41. During the movement of the skid 6 from the front station A to the intermediate station B, its power structure is solely the power motor 405 at the intermediate station B, and its transmission structure is solely the chain 404 at the intermediate station B. During the movement of the skid 6 from the intermediate station B to the rear station C, all the rollers 10 rotate passively, and the skid 6 is pushed by the extended second connector 42. During the movement of the skid 6 from the intermediate station B to the rear station C, its power structure is solely the power motor 405 at the intermediate station B, and its transmission structure is solely the chain 404 at the intermediate station B. During the movement of the skid 6 from the rear station C to the intermediate station B, all the rollers 10 rotate passively. The skid 6 is pulled by the extended second connector 42. The power structure for the skid 6 during this movement is solely the power motor 405 at the intermediate station B, and the transmission structure is solely the chain 404 at the intermediate station B. Similarly, during the movement of the skid 6 from the intermediate station B to the front station A, all the rollers 10 rotate passively. The skid 6 is pushed by the extended first connector 41. The power structure for the skid 6 during this movement is solely the power motor 405 at the intermediate station B, and the transmission structure is solely the chain 404 at the intermediate station B. Compared to existing technologies, the production line has lower operating costs.

[0069] It should be noted that the first insertion component 41 being laterally aligned with the calibration and positioning component means that, after being extended, the first insertion component 41 can be laterally inserted between the two positioning parts 611 in the calibration and positioning component. Similarly, the second insertion component being laterally aligned with the calibration and positioning component means that, after being extended, the first insertion component 41 can be laterally inserted between the two positioning parts 611 in the calibration and positioning component. In the longitudinal direction, the two front positioning components (left front positioning component and right front positioning component) are laterally aligned, and the two rear positioning components (left rear positioning component and right rear positioning component) are laterally aligned. Therefore, the first insertion component 41 being laterally aligned with the left rear positioning component is also being laterally aligned with the right rear positioning component, and the second insertion component 42 being laterally aligned with the right front positioning component is also being laterally aligned with the left front positioning component.

[0070] Understandably, the vehicle model clamp 9 on the skid 6 can clamp and fix a vehicle model part.

[0071] See Figure 1 , 3Optionally, a transverse guide rail 105 and a transverse drive device 104 are provided on the ground of the front work station A. At least one first roller support device 1 is provided on the transverse guide rail 105. The transverse drive device 104 is used to drive the first roller support device 1 to move laterally along the transverse guide rail 105.

[0072] A turntable 5 is provided on the ground at the rear work station C. Two third roller support devices 3 are provided and are located on the top of the turntable 5. The two third roller support devices 3 are symmetrically arranged about the axis of the turntable 5, and the turntable 5 is used to rotate so that the two third roller support devices 3 are longitudinally aligned with the second roller support device.

[0073] In this embodiment, a transverse guide rail is provided on the ground of the front workstation A. The first roller support device 1 is specifically slidably connected to the transverse guide rail, and the transverse drive device 104 can drive the first roller support device 1 to move laterally. Thus, when the skid 6 is switched to the first roller support device 1 at the front workstation A, the first roller support device 1 can be driven to move laterally by the transverse drive device 104, so as to move the skid 6 laterally to other workstations. The vehicle model fixture 9 on the skid 6 can be changed at other positions, and other vehicle model parts can be fixed by changing other types of vehicle model fixtures 9, so as to realize the co-production of multiple vehicle models.

[0074] The first roller support device 1 may be equipped with a traveling wheel 103, and the lateral drive device 104 may be a lateral motor. The lateral motor is connected to the traveling wheel 103 for driving. The lateral motor is used to drive the traveling wheel 103 to rotate, and then the lateral movement of the first roller support device 1 is realized by the traveling wheel 103 on the transverse guide rail 105.

[0075] There can be two first roller support devices 1, which are connected together in the horizontal direction. When one first roller support device 1 is longitudinally aligned with the second roller support device, the skid 6 on the first roller support device 1 can be switched to the intermediate station B, while the other first roller support device 1 can place the skid 6 with other vehicle model clamps 9, so as to realize the co-production of multiple vehicle models and improve production efficiency.

[0076] When the first roller support device 1 needs to move laterally on the transverse guide rail 105 to change the vehicle clamp 9, the power motor 405 needs to be controlled in advance to make the first plug-in component 41 and the second plug-in component 42 move to the middle position of the intermediate station B. In this way, the first plug-in component 41 and the second plug-in component 42 will not interfere with the lateral movement of the first roller support device 1.

[0077] In this embodiment, a turntable 5 is installed on the ground of the rear workstation C. Two third roller support devices 3 are mounted on the turntable 5, symmetrically arranged about the axis of the turntable 5. Thus, the turntable 5 can rotate to longitudinally align the two third roller support devices 3 with the second roller support device. When one third roller support device 3 is longitudinally aligned and docked with the second roller support device, the turntable 5 only needs to rotate 180° to rotate the other third roller support device 3 to dock with the second roller support assembly. When the skid 6 switches from the intermediate workstation B to the front of the rear workstation C, the turntable 5 can rotate 180° to move the skid 6 to the rear of the rear workstation C, allowing further processing to be performed at the rear of the rear workstation C. This does not prevent another third roller support device 3 without a skid 6 from receiving the other skid 6, enabling multi-model co-production on the same line while improving production efficiency.

[0078] When the turntable 5 needs to rotate, the power motor 405 needs to be controlled in advance to move the first plug-in component 41 and the second plug-in component 42 to the middle position of the intermediate work station B. In this way, the first plug-in component 41 and the second plug-in component 42 will not interfere with the rotation of the third roller support device 3.

[0079] See Figure 3 , 4 Optionally, the first roller support device 1 includes two first roller mounting longitudinal beams 101 and a first cross beam 102. The two first roller mounting longitudinal beams 101 are connected through the first cross beam 102, and the plurality of rollers 10 in the first roller group are respectively mounted on the two first roller mounting longitudinal beams 101.

[0080] The bottom surface of the skid 6 is also provided with a pair of longitudinally arranged slide plates 62 that are symmetrically arranged on the left and right sides. The distance between the two longitudinally arranged slide plates 62 is greater than the distance between the left front positioning component and the right front positioning component. The two longitudinally arranged slide plates 62 are used to support the roller 10.

[0081] A longitudinal limiting structure 106 is provided at the front end of one first roller mounting longitudinal beam 101 and at the rear end of another first roller mounting longitudinal beam 101. The longitudinal limiting structure 106 includes a longitudinal baffle 1061, a baffle mounting plate 1062 and a pin 1063. The baffle mounting plate 1062 is installed at the end of the first roller mounting longitudinal beam 101 and is spaced apart from the end of the first roller mounting longitudinal beam 101. The longitudinal baffle 1061 is disposed between the baffle mounting plate 1062 and the end of the first roller mounting longitudinal beam 101. The pin 1063 passes through the baffle mounting plate 1062 and the longitudinal baffle 1061 in sequence and is connected to the first roller mounting longitudinal beam 101. A baffle caster 1064 is provided at the bottom of the longitudinal baffle 1061.

[0082] A caster bracket 107 is also provided on the ground of the front workstation A. The top of the caster bracket 107 has a bracket plane 1071. The left and right ends of the bracket plane 1071 are respectively provided with ramps 1072. When the two first roller mounting beams 101 are respectively aligned longitudinally with the corresponding second roller support units 2, the baffle caster 1064 travels to the bracket plane 1071 through the ramps 1072, and the longitudinal baffle 1061 rotates relative to the first roller mounting beams 101 until the top of the longitudinal baffle 1061 is lower than the bottom height of the longitudinal slide plate 62.

[0083] In this embodiment, the first roller support device 1 includes two transversely arranged first roller mounting beams 101, each with multiple rollers 10 arranged longitudinally. Thus, the longitudinal sliding plates 62 on the left and right sides of the bottom of the skid 6 can be supported on the rollers of the corresponding first roller mounting beams 101. The four positioning components 61 at the bottom of the skid 6 are located between the two longitudinal sliding plates 62. The first roller mounting beam 101 can be a hollow structure, with the rollers 10 installed inside. A small portion of the top of the rollers 10 extends beyond the top surface of the first roller mounting beam 101, improving integration, reducing the height of the rollers 10, and providing some protection. Correspondingly, the second roller support unit 2 includes a second roller mounting beam and a second support base. The second roller mounting beam is supported on the ground of the intermediate workstation B by the second support base.

[0084] The aforementioned first roller support device 1 and second roller support device being longitudinally aligned means that the two first roller mounting longitudinal beams 101 are longitudinally aligned with the corresponding second roller mounting longitudinal beams.

[0085] In this embodiment, when the first roller support device 1 moves laterally to be longitudinally aligned with the second roller support device, the baffle caster 1064 of the longitudinal limiting structure 106 has moved from the ramp surface 1072 of the caster bracket 107 to the bracket plane 1071. At this time, the top of the longitudinal baffle 1061 is passively rotated to a height lower than the top of the roller 10. At this time, the longitudinal top plate will not interfere with the sliding skid 6 switching from the front station A to the middle station B. When the first roller support device 1 moves laterally to be not longitudinally aligned with the second roller support device, and the baffle caster 1064 is in a suspended state, under the weight of the longitudinal baffle 1061, the longitudinal baffle 1061 is in a vertical state. At this time, the top height of the longitudinal baffle 1061 is higher than the top height of the roller 10, ensuring that when the first roller support device 1 moves laterally, the sliding skid 6 on its upper side will not longitudinally detach from the first roller support device 1, thereby ensuring that the replacement of the vehicle clamp on the sliding skid 6 is carried out normally. From this perspective, it can also be understood that if only a small portion of the top of the roller 10 extends beyond the top surface of the first roller mounting beam 101, the top of the roller 10 will not be too high, thus facilitating the realization of the function of the longitudinal limiting structure 106.

[0086] See Figure 5 Optionally, the intermediate power transmission device 4 further includes a first longitudinal slide rail 431 and a second longitudinal slide rail 432. The first longitudinal slide rail 431 and the second longitudinal slide rail 432 are respectively disposed on the left and right sides of the chain 404. The first longitudinal slide rail 431 and the second longitudinal slide rail 432 are respectively connected to the power base 401. A first slider 4311 is slidably connected on the first longitudinal slide rail 431 and is connected to the first plug-in component 41. A second slider 4321 is slidably connected on the second longitudinal slide rail 432 and is connected to the second plug-in component 42.

[0087] And / or, the intermediate power transmission device 4 further includes two chain longitudinal guide plates 433, which are disposed on the inner side of the chain 404. The chain longitudinal guide plates 433 are connected to the power base 401, and the two chain longitudinal guide plates 404 are respectively provided with chain grooves matching the chain 404 on opposite sides.

[0088] In this embodiment, the first slider 4311 is connected to both the first longitudinal slide rail 431 and the chain 404. Based on this, the first plug-in component 41 is mounted on the first slider 4311, thus ensuring the stability of the longitudinal movement of the first plug-in component 41. Similarly, the second slider 4321 is connected to both the second longitudinal slide rail 432 and the chain 404. Based on this, the second plug-in component 42 is mounted on the second slider 4321, thus ensuring the stability of the longitudinal movement of the second plug-in component 42.

[0089] In this embodiment, two chain longitudinal guide plates 433 are respectively disposed on the inner side of the chain 404. The chain 404 on the left is placed in the corresponding chain groove, and the chain 404 on the right is placed in the corresponding chain groove. This can ensure that the chain 404 will not sag in the middle under gravity even when it is long, that is, to avoid the chain 404 from dragging, and further ensure the stability of the longitudinal movement of the first plug-in component 41 and the second plug-in component 42.

[0090] See Figure 5Optionally, the intermediate power transmission device 4 further includes a first circular proximity switch 441, a first proximity switch bracket, a second circular proximity switch 442, a second proximity switch bracket, a third circular proximity switch 443, a third proximity switch bracket, a fourth circular proximity switch 444, a fourth proximity switch bracket, a fifth circular proximity switch 445, a fifth proximity switch bracket, a sixth circular proximity switch 446, and a sixth proximity switch bracket. The first circular proximity switch 441 is connected to the power base 401 via the first proximity switch bracket. The first circular proximity switch 441 is located near the right rear part of the chain 404. When the first insertion assembly... When the chain moves longitudinally to the front end of the intermediate station B, the first circular proximity switch 441 is triggered by the first plug-in component 41; the second circular proximity switch 442 is connected to the power base 401 via the second proximity switch bracket, and the second circular proximity switch 442 is located near the right middle part of the chain 404. When the first plug-in component 41 moves longitudinally to the middle part of the intermediate station B, the second circular proximity switch 442 is triggered by the first plug-in component 41; the third circular proximity switch 443 is connected to the power base 401 via the third proximity switch bracket. Near the front right position of the chain 404, when the first plug-in assembly 41 moves longitudinally to the rear end position of the intermediate station B, the third circular proximity switch 443 is triggered by the first plug-in assembly 41; the fourth circular proximity switch 444 is connected to the power base 401 via the fourth proximity switch bracket, and near the middle left position of the chain 404, when the second plug-in assembly 42 moves longitudinally to the middle position of the intermediate station B, the fourth circular proximity switch 444 is triggered by the second plug-in assembly 42; the fifth circular proximity switch 445 is connected to the power base 401 via the fifth proximity switch bracket. The frame is connected to the power base 401. The fifth circular proximity switch 445 is located near the front left of the chain 404. When the second plug-in component 42 moves longitudinally to the rear end of the intermediate station B, the fifth circular proximity switch 445 is triggered by the second plug-in component 42. The sixth circular proximity switch 446 is connected to the power base 401 through the sixth proximity switch bracket. The sixth circular proximity switch 446 is located near the rear left of the chain 404. When the second plug-in component 42 moves longitudinally to the front end of the intermediate station B, the sixth circular proximity switch 446 is triggered by the second plug-in component 42.

[0091] In this embodiment, when the first circular proximity switch 441 is triggered by the first plug-in component 41, it indicates that the first plug-in component 41 has moved longitudinally to the front end position of the intermediate station B; when the second circular proximity switch 442 is triggered by the first plug-in component 41, it indicates that the first plug-in component 41 has moved longitudinally to the middle position of the intermediate station B; when the third circular proximity switch 443 is triggered by the first plug-in component 41, it indicates that the first plug-in component 41 has moved longitudinally to the rear end position of the intermediate station B; when the fourth circular proximity switch 444 is triggered by the second plug-in component 42, it indicates that the second plug-in component 42 has moved longitudinally to the middle position of the intermediate station B; when the fifth circular proximity switch 445 is triggered by the second plug-in component 42, it indicates that the second plug-in component 42 has moved longitudinally to the rear end position of the intermediate station B; when the sixth circular proximity switch 446 is triggered by the second plug-in component 42, it indicates that the second plug-in component 42 has moved longitudinally to the front end position of the intermediate station B. Thus, by setting the first circular proximity switch 441, the second circular proximity switch 442, the third circular proximity switch 443, the fourth circular proximity switch 444, the fifth circular proximity switch 445 and the sixth circular proximity switch 446, the longitudinal position of the first plug-in component 41 and the second plug-in component 42 can be accurately detected to determine whether the first plug-in component 41 and the second plug-in component 42 have moved into place, thereby ensuring that the slide 6 moves into place.

[0092] Specifically, the positioning part 611 can be a positioning wheel capable of rotation. Both the first insertion component 41 and the second insertion component 42 can be thin-walled cylinders. The output end of the thin-walled cylinder is connected to a positioning pin. The thin-walled cylinder extends to allow the positioning pin to be inserted laterally between the two positioning wheels, and also retracts to remove the positioning pin from between the two positioning wheels. Two thin-walled cylinder position sensing switches can also be provided on the thin-walled cylinder. One switch detects whether the positioning pin has extended to the correct position, and the other detects whether the pin has retracted to the correct position. By designing the positioning part 611 as a positioning wheel, when the positioning pin is inserted between the two positioning wheels, it rolls and rubs against the front and rear positioning wheels, preventing wear on the surfaces of the positioning part 611 and the positioning pin. This design ensures that the longitudinal movement of the positioning pin and the positioning wheels is not delayed after the positioning pin is inserted between the two positioning wheels, guaranteeing the reliable accuracy of the longitudinal movement of the skid 6.

[0093] See Figure 5 and Figure 9Optionally, the intermediate power transmission device 4 further includes a first position detection switch 451, which is disposed on the power base 401. The bottom surface of the skid 6 is also provided with a position detection circuit board 631. Through the mutual sensing between the first position detection switch 451 and the position detection circuit board 631, the precise longitudinal position of the skid 6 at the intermediate work station B is ensured.

[0094] In this embodiment, when the slide bar 6 moves longitudinally on the second roller support device at the intermediate station B, the position detection circuit board 631 at the bottom of the slide bar 6 can move in contact with the first position detection switch 451. Thus, the position of the slide bar 6 at the intermediate station B can be detected by the mutual sensing between the first position detection switch 451 and the position detection circuit board 631, ensuring that the position of the slide bar 6 is accurate.

[0095] See Figure 2 , 7 9. Optionally, the automobile production line further includes a first lateral positioning mechanism 71, which is disposed on the power base 401 and located on one side of the chain 404. The first lateral positioning mechanism 71 includes two first lateral positioning groups 711 arranged front and rear. The first lateral positioning group 711 includes a first lateral positioning base 7111. A pair of first lateral positioning wheels 7112 arranged laterally are provided on the top of the first lateral positioning base 7111.

[0096] The bottom surface of the skid 6 is provided with a transverse positioning block 632. Two transverse positioning blocks 632 are arranged at intervals. When one transverse positioning block 632 moves longitudinally between two first transverse positioning wheels 7112 in one first transverse positioning group 711, the other transverse positioning block 632 is located between two first transverse positioning wheels 7112 in another first transverse positioning group 711.

[0097] In this embodiment, when the slide 6 moves into place on the second roller support device, the lateral positioning block on the front side of the bottom of the slide 6 is located between the two first lateral positioning wheels 7112 of the front first lateral positioning group 711, and the lateral positioning block on the rear side of the bottom of the slide 6 is located between the two first lateral positioning wheels 7112 of the rear first lateral positioning group 711, ensuring that the slide 6 in place is limited in the lateral direction, which facilitates the operation of the workers at the intermediate work station B.

[0098] See Figure 2 , 6Optionally, the bottom surface of the skid 6 is provided with a longitudinal positioning block 633, which is located between two transverse positioning blocks 632. The automobile production line that can replace the power transmission device of the front and rear workstations also includes a first longitudinal positioning mechanism 72, which is located between two first transverse positioning groups 711. The first longitudinal positioning mechanism 72 includes a first cylinder support 721, a first clamping cylinder 722, and a first clamping block 723. The first cylinder support 721 is mounted on the power base 401, and the two first clamping cylinders 722 are mounted on the first cylinder support 721. The two first clamping cylinders 722 respectively drive and connect to one of the first clamping blocks 723, so that the two first clamping blocks 723 are raised and clamped and fixed in the longitudinal direction to the longitudinal positioning block 633.

[0099] In this embodiment, when the slide 6 moves into place on the second roller support device, the longitudinal positioning block 633 at the bottom of the slide 6 is exactly located between the two clamping blocks 723 in the first longitudinal positioning mechanism 72. At this time, the action of the first clamping cylinder 722 can cause the two clamping blocks 723 to move upward and clamp the longitudinal positioning block 633, ensuring that the slide 6 in place is limited in the longitudinal direction, which is convenient for the workers at the intermediate work station B to operate.

[0100] See Figure 10 Optionally, the top of the turntable 5 is provided with a turntable support, the turntable support includes two turntable longitudinal beams 51 and a turntable cross beam 52, the two turntable longitudinal beams 51 are connected by multiple turntable cross beams 52, and the two third roller support devices 3 are provided on the turntable support.

[0101] The third roller support device 3 includes two third roller mounting beams 301, a second position detection switch 302, a second lateral positioning mechanism 303, and a second longitudinal positioning mechanism 304. The second position detection switch 302, the second lateral positioning mechanism 303, and the second longitudinal positioning mechanism 304 are respectively disposed on the turntable crossbeam 52. When the skid 6 is on the third roller support device 3, the second position detection switch 302 and the position detection circuit board 631 sense each other to detect the position of the skid 6 at the rear station C. The second lateral positioning mechanism 303 cooperates with the lateral positioning block 632 to position the skid 6 laterally, and the second longitudinal positioning mechanism 304 cooperates with the longitudinal positioning block 633 to position the skid 6 longitudinally.

[0102] In this embodiment, when the skid 6 moves longitudinally on the third roller support device 3 at the rear station C, the position detection circuit board 631 at the bottom of the skid 6 can move in contact with the second position detection switch 302. The position of the skid 6 at the rear station C can be detected through the mutual sensing between the second position detection switch 302 and the position detection circuit board 631, ensuring accurate positioning of the skid 6. When the skid 6 moves into position on the third roller support device 3, the longitudinal positioning block 633 at the bottom of the skid 6 can be clamped and fixed longitudinally by the second longitudinal positioning mechanism 304, while the transverse positioning block 632 at the bottom of the skid 6 is limited by the second transverse positioning mechanism 303. The structure of the second transverse positioning mechanism 303 can be the same as the first transverse positioning mechanism 71 at the intermediate station B, and the structure of the second longitudinal positioning mechanism 304 can be the same as the first longitudinal positioning mechanism 72; further details are omitted here.

[0103] See Figure 2 and Figure 8-9 Optionally, the automobile production line that can replace the power transmission devices of the front and rear workstations also includes a quick-connect mechanism 8. There are three quick-connect mechanisms 8, namely a first quick-connect mechanism, a second quick-connect mechanism, and a third quick-connect mechanism. The first quick-connect mechanism is located on the side of the second roller support unit 2 away from the intermediate power transmission device 4. The second quick-connect mechanism and the third quick-connect mechanism are respectively located at the two third roller support devices 3.

[0104] The quick-connect mechanism 8 includes a quick-connect cylinder support 81, a quick-connect cylinder 82, and a quick-connect unit 83. The quick-connect cylinder 82 is disposed on the quick-connect cylinder support 81, and the quick-connect unit 83 is connected to the output end of the quick-connect cylinder 82. The bottom surface of the skid 6 is provided with a quick-connect mating unit 634. The quick-connect cylinder 82 is used to drive the quick-connect unit 83 to connect and conduct electricity with the quick-connect mating unit 634.

[0105] The turntable bracket is provided with two vehicle model identification switch fixed ends 53, and the two vehicle model identification switch fixed ends 53 correspond to the two third roller support devices 3 respectively. The bottom surface of the skid 6 is provided with a vehicle model identification switch movable end 635. The vehicle model identification switch fixed end 53 is used to sense with the vehicle model identification switch movable end 635 to identify the type of the vehicle model clamp 9 on the skid 6 corresponding to the third roller support device 3.

[0106] In this embodiment, when the skid 6 moves into position on the second roller support device, the quick-connect unit 83 (ATI media connector) can be driven to rise by the quick-connect cylinder 82 in the first quick-connect mechanism and connect with the quick-connect mating unit 634 (ATI media connector) at the bottom of the skid 6, thereby achieving conductivity and supplying power to components such as the vehicle clamp 9 on the upper side of the skid 6. The second quick-connect mechanism and the third quick-connect mechanism are respectively set at the two third roller support devices 3. When the skid 6 is on the third roller support device 3, the second quick-connect mechanism or the third quick-connect mechanism connects with the quick-connect mating unit 634 at the bottom of the skid 6 to conduct electricity; at the same time, the movable end 635 of the vehicle identification switch on the bottom surface of the skid 6 can sense with the fixed end 53 of the vehicle identification switch of the corresponding third roller support device 3, so as to identify what type of vehicle clamp 9 is on the skid 6.

[0107] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" and "second" may explicitly or implicitly include at least one of those features.

[0108] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. An automobile production line capable of replacing the power transmission devices at the front and rear workstations, characterized in that, It includes a front station (A), a middle station (B), a rear station (C), a skid (6), rollers (10), and a middle power transmission device (4). The upper side of the skid (6) is used to install the vehicle model clamp (9). The lower side of the skid (6) is provided with four positioning components (61) arranged in a rectangle. The positioning component (61) includes a pair of positioning parts (611) arranged at intervals. The four positioning components (61) are the left front positioning component, the right front positioning component, the left rear positioning component, and the right rear positioning component. A first roller support device (1) is provided at the front workstation (A), and a first roller group is provided on the first roller support device (1). The first roller group includes a plurality of rollers (10). A second roller support device is provided on the ground of the middle workstation (B). The second roller support device includes a pair of second roller support units (2) arranged symmetrically on the left and right. A second roller group is provided on the second roller support unit (2). The second roller group includes a plurality of rollers (10). A third roller support device (3) is provided at the rear workstation (C). A third roller group is provided on the third roller support device (3). The third roller group includes a plurality of rollers (10). The axial direction of all rollers (10) in the first roller group, the second roller group and the third roller group is transverse. The intermediate power transmission device (4) is disposed between the two second roller support units (2). The intermediate power transmission device (4) includes a power base (401), a front chain shaft (402), a rear chain shaft (403), a chain (404), a power motor (405), a first plug-in assembly (41), and a second plug-in assembly (42). The front chain shaft (402) and the rear chain shaft (403) are rotatably connected to the power base (401), and the chain (404) drives the front chain shaft (402) and the rear chain shaft (403). The power motor (405) is disposed on the power base (401), and the power motor (405) is drivenly connected to the front chain shaft (402) or the rear chain shaft (403). The first plug-in assembly (41) and the second plug-in assembly (42) are also present. The first insertion component (41) and the second insertion component (42) are respectively located on the left and right sides of the line connecting the front chain shaft (402) and the rear chain shaft (403) on the chain (404). The first insertion component (41) is used to extend and retract to insert or remove between the two positioning parts (611) of the left front positioning component or the left rear positioning component. The second insertion component (42) is used to extend and retract to insert or remove between the two positioning parts (611) of the right front positioning component or the right rear positioning component. When the skid (6) is on the second roller support device, the first insertion component (41) and the second insertion component (42) are used to laterally align with the two calibration positioning components at the same time. The two calibration positioning components are two positioning components (61) arranged diagonally.

2. The automobile production line capable of replacing the power transmission devices at the front and rear workstations according to claim 1, characterized in that, A transverse guide rail (105) and a transverse drive device (104) are provided on the ground of the front work station (A). At least one first roller support device (1) is provided on the transverse guide rail (105). The transverse drive device (104) is used to drive the first roller support device (1) to move laterally along the transverse guide rail (105). A turntable (5) is provided on the ground at the rear work station (C). Two third roller support devices (3) are provided and are located on the top of the turntable (5). The two third roller support devices (3) are symmetrically arranged about the axis of the turntable (5), and the turntable (5) is used to rotate so that the two third roller support devices (3) are longitudinally aligned with the second roller support device.

3. The automobile production line that can replace the power transmission device at the front and rear workstations according to claim 2, characterized in that, The first roller support device (1) includes two first roller mounting longitudinal beams (101) and a first cross beam (102). The two first roller mounting longitudinal beams (101) are connected through the first cross beam (102). The plurality of rollers (10) in the first roller group are respectively mounted on the two first roller mounting longitudinal beams (101). The bottom surface of the skid (6) is also provided with a pair of longitudinal sliding plates (62) arranged symmetrically on the left and right. The distance between the two longitudinal sliding plates (62) is greater than the distance between the left front positioning component and the right front positioning component. The two longitudinal sliding plates (62) are used to support the roller (10). A longitudinal limiting structure (106) is provided at the front end of one of the first roller mounting longitudinal beams (101), and a longitudinal limiting structure (106) is provided at the rear end of the other first roller mounting longitudinal beam (101). The longitudinal limiting structure (106) includes a longitudinal baffle (1061), a baffle mounting plate (1062), and a pin (1063). The baffle mounting plate (1062) is mounted on the end of the first roller mounting longitudinal beam (101) and is connected to the first roller mounting longitudinal beam (101). The roller mounting longitudinal beam (101) is spaced apart at its ends. The longitudinal baffle (1061) is disposed between the baffle mounting plate (1062) and the end of the first roller mounting longitudinal beam (101). The pin (1063) passes through the baffle mounting plate (1062) and the longitudinal baffle (1061) in sequence and is connected to the first roller mounting longitudinal beam (101). The bottom of the longitudinal baffle (1061) is provided with a baffle caster (1064). A caster bracket (107) is also provided on the ground of the front workstation (A). The top of the caster bracket (107) has a bracket plane (1071). The left and right ends of the bracket plane (1071) are respectively provided with ramps (1072). When the two first roller mounting beams (101) are longitudinally aligned with the corresponding second roller support units (2), the baffle caster (1064) travels to the bracket plane (1071) through the ramps (1072), and the longitudinal baffle (1061) rotates relative to the first roller mounting beam (101) until the top of the longitudinal baffle (1061) is lower than the bottom height of the longitudinal slide plate (62).

4. The automobile production line that can replace the power transmission device at the front and rear workstations according to claim 2, characterized in that, The intermediate power transmission device (4) further includes a first longitudinal slide rail (431) and a second longitudinal slide rail (432). The first longitudinal slide rail (431) and the second longitudinal slide rail (432) are respectively disposed on the left and right sides of the chain (404). The first longitudinal slide rail (431) and the second longitudinal slide rail (432) are respectively connected to the power base (401). A first slider (4311) is slidably connected on the first longitudinal slide rail (431). The first slider (4311) is connected to the first plug-in assembly (41). A second slider (4321) is slidably connected on the second longitudinal slide rail (432). The second slider (4321) is connected to the second plug-in assembly (42). And / or, the intermediate power transmission device (4) further includes two chain longitudinal guide plates (433), which are disposed on the inner side of the chain (404). The chain longitudinal guide plates (433) are connected to the power base (401), and the two chain longitudinal guide plates (433) are respectively provided with chain grooves matching the chain (404) on opposite sides.

5. The automobile production line that can replace the power transmission device at the front and rear workstations according to claim 4, characterized in that, The intermediate power transmission device (4) further includes a first circular proximity switch (441), a first proximity switch bracket, a second circular proximity switch (442), a second proximity switch bracket, a third circular proximity switch (443), a third proximity switch bracket, a fourth circular proximity switch (444), a fourth proximity switch bracket, a fifth circular proximity switch (445), a fifth proximity switch bracket, a sixth circular proximity switch (446), and a sixth proximity switch bracket. The first circular proximity switch (441) is connected to the power base (401) through the first proximity switch bracket. The first circular proximity switch (441) is located near the right rear part of the chain (404). When the first plug-in assembly (41) moves longitudinally to the desired position... When the first plug-in assembly (41) moves longitudinally to the middle position of the intermediate station (B), the first circular proximity switch (441) is triggered by the first plug-in assembly (41); the second circular proximity switch (442) is connected to the power base (401) through the second proximity switch bracket, and the second circular proximity switch (442) is close to the right middle position of the chain (404). When the first plug-in assembly (41) moves longitudinally to the middle position of the intermediate station (B), the second circular proximity switch (442) is triggered by the first plug-in assembly (41); the third circular proximity switch (443) is connected to the power base (401) through the third proximity switch bracket, and the third circular proximity switch (443) is close to the chain. (404) is located at the front right position. When the first plug-in assembly (41) moves longitudinally to the rear end position of the intermediate station (B), the third circular proximity switch (443) is triggered by the first plug-in assembly (41); the fourth circular proximity switch (444) is connected to the power base (401) through the fourth proximity switch bracket. The fourth circular proximity switch (444) is located near the left middle position of the chain (404). When the second plug-in assembly (42) moves longitudinally to the middle position of the intermediate station (B), the fourth circular proximity switch (444) is triggered by the second plug-in assembly (42); the fifth circular proximity switch (445) is connected to the power base (401) through the fifth proximity switch bracket. The fifth circular proximity switch (445) is connected to the power base (401) and is located near the front left of the chain (404). When the second plug-in assembly (42) moves longitudinally to the rear end of the intermediate station (B), the fifth circular proximity switch (445) is triggered by the second plug-in assembly (42). The sixth circular proximity switch (446) is connected to the power base (401) through the sixth proximity switch bracket and is located near the rear left of the chain (404). When the second plug-in assembly (42) moves longitudinally to the front end of the intermediate station (B), the sixth circular proximity switch (446) is triggered by the second plug-in assembly (42).

6. The automobile production line capable of replacing the power transmission device at the front and rear workstations according to claim 4, characterized in that, The intermediate power transmission device (4) further includes a first position detection switch (451), which is disposed on the power base (401). The bottom surface of the skid (6) is also provided with a position detection circuit board (631). The position of the skid (6) at the intermediate station (B) is detected by mutual sensing between the first position detection switch (451) and the position detection circuit board (631).

7. The automobile production line capable of replacing the power transmission device at the front and rear workstations according to claim 6, characterized in that, It also includes a first lateral positioning mechanism (71), which is disposed on the power base (401) and located on one side of the chain (404). The first lateral positioning mechanism (71) includes two first lateral positioning groups (711) arranged in front and behind. The first lateral positioning group (711) includes a first lateral positioning base (7111). A pair of first lateral positioning wheels (7112) are arranged laterally at the top of the first lateral positioning base (7111). The bottom surface of the skid (6) is provided with a transverse positioning block (632). The two transverse positioning blocks (632) are arranged at intervals. When one transverse positioning block (632) moves longitudinally between the two first transverse positioning wheels (7112) in one first transverse positioning group (711), the other transverse positioning block (632) is located between the two first transverse positioning wheels (7112) in another first transverse positioning group (711).

8. The automobile production line capable of replacing the power transmission device at the front and rear workstations according to claim 7, characterized in that, The bottom surface of the skid (6) is provided with a longitudinal positioning block (633), which is located between two transverse positioning blocks (632). The automobile production line that can replace the power transmission device of the front and rear workstations also includes a first longitudinal positioning mechanism (72), which is located between two first transverse positioning groups (711). The first longitudinal positioning mechanism (72) includes a first cylinder support (721), a first clamping cylinder (722), and a first clamping block (723). The first cylinder support (721) is mounted on the power base (401), and the two first clamping cylinders (722) are mounted on the first cylinder support (721). The two first clamping cylinders (722) drive and connect one first clamping block (723) respectively, so that the two first clamping blocks (723) are raised and clamped and fixed in the longitudinal direction to the longitudinal positioning block (633).

9. The automobile production line capable of replacing the power transmission device at the front and rear workstations according to claim 8, characterized in that, The top of the turntable (5) is provided with a turntable support, which includes two turntable longitudinal beams (51) and a turntable crossbeam (52). The two turntable longitudinal beams (51) are connected by multiple turntable crossbeams (52). Two third roller support devices (3) are provided on the turntable support. The third roller support device (3) includes two third roller mounting beams (301), a second position detection switch (302), a second lateral positioning mechanism (303), and a second longitudinal positioning mechanism (304). The second position detection switch (302), the second lateral positioning mechanism (303), and the second longitudinal positioning mechanism (304) are respectively disposed on the turntable beam (52). When the skid (6) is on the third roller support device (3), the second position detection switch (302) senses each other with the position detection circuit board (631) to detect the position of the skid (6) at the rear station (C). The second lateral positioning mechanism (303) cooperates with the lateral positioning block (632) to position the skid (6) laterally, and the second longitudinal positioning mechanism (304) cooperates with the longitudinal positioning block (633) to position the skid (6) longitudinally.

10. The automobile production line capable of replacing the power transmission device at the front and rear workstations according to claim 9, characterized in that, It also includes quick-connect mechanisms (8), of which three quick-connect mechanisms (8) are provided. The three quick-connect mechanisms (8) are a first quick-connect mechanism, a second quick-connect mechanism and a third quick-connect mechanism. The first quick-connect mechanism is provided on the side of the second roller support unit (2) away from the intermediate power transmission device (4). The second quick-connect mechanism and the third quick-connect mechanism are respectively provided at the two third roller support devices (3). The quick-connect mechanism (8) includes a quick-connect cylinder support (81), a quick-connect cylinder (82), and a quick-connect unit (83). The quick-connect cylinder (82) is disposed on the quick-connect cylinder support (81), and the quick-connect unit (83) is connected to the output end of the quick-connect cylinder (82). The bottom surface of the skid (6) is provided with a quick-connect mating unit (634). The quick-connect cylinder (82) is used to drive the quick-connect unit (83) to connect and conduct electricity with the quick-connect mating unit (634). The turntable support is provided with two vehicle model identification switch fixed ends (53), and the two vehicle model identification switch fixed ends (53) correspond to the two third roller support devices (3) respectively. The bottom surface of the skid (6) is provided with a vehicle model identification switch movable end (635). The vehicle model identification switch fixed end (53) is used to sense the vehicle model identification switch movable end (635) to identify the type of the vehicle model clamp (9) on the skid (6) corresponding to the third roller support device (3).

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