A multi-vehicle automatic chassis switching suspension mechanism

Abstract

This invention discloses an automatic chassis lifting device for multiple vehicle models, comprising a chassis lifting device. The chassis lifting device includes a lifting device frame and a front lifting device pin structure and a rear lifting device support structure mounted on the frame. The rear lifting device support structure includes lifting device legs and a movable rear support located at the lower end of the legs, adjustable laterally. The lifting device legs are longitudinally adjustable and mounted on the frame. An adjustment station is provided on one side of the lifting device frame for adjusting the position of the lifting device legs and the movable rear support of each chassis lifting device. Each chassis lifting device can be adjusted via the independent adjustment station, thereby achieving automatic distance switching during mixed-line production of different vehicle sizes. The adjustment drive structure does not need to be located on each chassis lifting device, resulting in a simple lifting device structure, small space occupation, stable and reliable operation, and relatively low cost.

Description

Technical Field

[0001] This invention relates to the field of automotive chassis lifting technology, and in particular to a multi-vehicle automatic switching chassis lifting mechanism. Background Technology

[0002] Currently, to meet the assembly needs of other lower body components such as batteries, engines, tires, and exhaust pipes, automotive OEMs use chassis conveyor systems in their final assembly workshops. These systems are mostly friction-driven or overhead conveyor lines, and regardless of the form, the carrier mechanism is the chassis lifting fixture. Existing chassis lifting fixtures are mostly front-support and rear-support structure fixtures. To achieve flexible production of multiple models, the chassis lifting fixtures are designed with adjustable lifting fixture structures.

[0003] For example, Chinese Patent CN112320570A discloses an adjustment device suitable for an automobile assembly chassis hanger, which includes a movable sliding frame, a first drive mechanism connected to the sliding frame and used to control the sliding frame to move along the X direction, a clamping mechanism disposed on the sliding frame and used to clamp the rear support arm of the automobile assembly chassis hanger, an adjustment mechanism for adjusting the position of the rear support assembly of the automobile assembly chassis hanger, and a second drive mechanism disposed on the sliding frame and used to control the adjustment mechanism to move along the Y direction. The rear support assembly is movably disposed on a slide rail base, and the slide rail base is connected to the rear support arm. Its adjustment drive structure is disposed on the chassis hanger. An adjustment drive structure needs to be disposed for each chassis hanger, which is complex, occupies a large space, and has a relatively high cost. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a multi-vehicle automatic chassis switching splice mechanism. Its adjustment drive structure does not need to be set on each chassis splice, resulting in a simple structure and relatively low cost.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] The multi-vehicle automatic switching chassis lifting mechanism includes a chassis lifting device. The chassis lifting device includes a lifting device frame and a lifting device front pin structure and a lifting device rear support structure mounted on the lifting device frame. The lifting device rear support structure includes lifting device outriggers and a lifting device rear support that can be adjusted laterally at the lower end of the lifting device outriggers. The lifting device outriggers are mounted on the frame and can be adjusted longitudinally. An adjustment station is provided on one side of the lifting device frame for adjusting the position of the lifting device outriggers and the position of the lifting device rear support for each chassis lifting device.

[0007] Further:

[0008] The frame has longitudinal bars along its side, and the lifting legs are movably mounted on the longitudinal bars. A locking structure is provided between the lifting legs and the side of the frame.

[0009] The rear support of the lifting device is located at the lower end of the lifting device's outrigger via a linear bearing assembly and a spring locking pin.

[0010] The adjustment station includes a base frame, a movable plate, a movable support, and a seat plate. The movable plate is mounted on the top of the base frame via a slide rail. The seat plate is connected to the movable plate via the movable support and is located below the movable plate. The base frame is provided with a drive structure for moving the movable plate. The movable plate is provided with an upper adjustment structure for adjusting the movement of the lifting device legs. The seat plate is provided with a lower adjustment structure for adjusting the movement of the lifting device rear support.

[0011] The base frame is a slide rail support, which is arranged longitudinally along its length. The top of the slide rail support is equipped with a lead screw and an upper servo motor, and the lead screw is connected to the moving plate.

[0012] The lower adjustment structure includes a sliding plate and a lower servo motor for driving the sliding plate to move. A parallel cylinder is provided on the sliding plate, and a locking pin structure for clamping the movement of the lifting device's rear support is provided on the parallel cylinder.

[0013] The movable plate is equipped with a double slide rail cylinder, and a clamping head is provided corresponding to the double slide rail cylinder; and an upper unlocking cylinder for unlocking the locking structure is provided above the movable plate.

[0014] The movable support includes a top frame, a side frame, and a base frame connected in sequence. The top frame is connected to the movable plate, and the seat plate is horizontally mounted on the base frame.

[0015] The base plate is provided with a lower unlocking cylinder located above the sliding plate, and the lower unlocking cylinder is provided with an unlocking plate for pulling the spring locking pin to unlock.

[0016] The movable plate is equipped with a support frame, and the upper unlocking cylinder is mounted on the support frame, located above the double slide rail cylinder.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] The multi-model automatic chassis switching splice mechanism has a reasonable structural design. Each chassis splice can be adjusted through the equipped independent adjustment station, thereby realizing automatic distance switching when different sizes of models are produced on the same production line. The adjustment drive structure does not need to be set on each chassis splice. The splice structure is simple, the splice occupies little space, the operation is stable and reliable, and the cost is relatively low. Attached Figure Description

[0019] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2This is an isometric view of the chassis lifting device of the present invention.

[0022] Figure 3 This is a side view of the adjusted station for the present invention.

[0023] Figure 4 and Figure 5 This is a schematic diagram of the X-direction adjustment structure for the invention.

[0024] Figure 6 This is a schematic diagram of the Y-direction adjustment structure of the present invention.

[0025] In the picture:

[0026] 1. Chassis lifting device; 101. Lifting device front pin; 102. Lifting device rear support; 103. Linear bearing assembly; 104. Spring lock pin; 105. Large circle linear bearing assembly; 106. Toothed rack;

[0027] 2. Adjustment station; 201. Long slide rail bracket; 202. Double slide rail cylinder; 203. Upper unlocking cylinder; 204. Upper servo motor; 205. Parallel cylinder; 2051. Locking pin; 206. Lower servo motor; 207. Base plate; 208. Moving bracket; 209. Lower unlocking cylinder.

[0028] 3. Front pin structure of chassis lifting device; 4. Rear support structure of chassis lifting device. Detailed Implementation

[0029] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and through the description of the examples.

[0030] like Figures 1 to 6 As shown, the multi-vehicle automatic chassis switching device includes a chassis spreader 1 and an adjustment station 2, which can meet the needs of mixed production of different vehicle sizes. The device can realize synchronous automatic stroke switching in the X and Y directions, meet the needs of multi-vehicle transfer and transportation, realize flexible production, and greatly improve production efficiency and save equipment costs.

[0031] The chassis spreader 1 includes a spreader frame and a chassis spreader front pin structure 3 and a chassis spreader rear support structure 4 located at the bottom of the spreader frame to support the vehicle chassis. The chassis spreader front pin structure consists of a pair of fixed spreader front pins 101 arranged opposite each other, and the chassis spreader rear support structure consists of a pair of movable and adjustable spreader rear supports 102 arranged opposite each other. The vehicle chassis is supported by the two spreader front pins and the two spreader rear supports.

[0032] Different vehicle sizes have different chassis lengths and widths, which means the distance between the front and rear spreader pins and the rear spreader supports are different, and the spacing between a pair of rear spreader supports is different. This invention adjusts the position of the rear spreader supports to meet the needs of transshipment transportation of different vehicle models.

[0033] The rear support structure of the spreader includes spreader legs and a rear support that can be adjusted laterally at the lower end of the spreader legs. The spreader legs are longitudinally adjustable and are mounted on the frame. An adjustment station is located on one side of the spreader frame to adjust the position of the spreader legs and the rear support of each chassis spreader. The adjustment station and the spreader frame are set up relatively independently. The chassis spreader that needs to be adjusted can be moved to the adjustment station position and then adjusted through the adjustment station. By adjusting the position of the rear support of the chassis spreader, the chassis spreader can be adapted to different vehicle sizes.

[0034] The frame is a frame structure, including a top frame and a pair of opposite side frames. The top of the side frames is hinged to the upper part of the top frame. The side frames can be flipped open. The front pin and rear support of the spreader on one side are located at the lower end of the side frame on that side, and the front pin and rear support of the spreader on the other side are located at the lower end of the side frame on the other side. There are two symmetrically arranged adjustment stations. The position of the rear support of the spreader on the corresponding side is adjusted through the adjustment station on each side. Only two corresponding adjustment stations are required, eliminating the need for an adjustment structure for each spreader frame, thus reducing costs. Since the structures on both sides are the same, the structure on one side is described below:

[0035] The side frame of the frame is provided with longitudinal bars, which are horizontal bars set at the front and back. The preferred longitudinal bar is a large circular linear bearing assembly 105. The lifting legs are movably set on the longitudinal bars. A locking structure is provided between the lifting legs and the side of the frame. After the lifting legs and the lifting rear support on them are adjusted in front and back positions, they can be positioned by the locking structure, so the structure is stable and reliable.

[0036] Preferred,

[0037] The upper middle part of the outrigger is provided with a sleeve hole, which is located on the large circular linear bearing assembly to facilitate forward and backward movement and adjustment; the locking structure is a rack and pinion structure 106; preferably, the locking structure includes a toothed strip on the side of the frame, and a toothed block that cooperates with the toothed strip at the top of the outrigger to achieve locking. The toothed block is located on the top of the outrigger and can move up and down. The toothed block and the toothed strip can be disengaged to achieve unlocking. The longitudinal position of the outrigger can be adjusted, that is, the position of the rear support of the outrigger can be adjusted in the X direction; and the structure is simple, the operation is stable and reliable, and the implementation cost is relatively low.

[0038] The rear support of the spreader is located at the lower end of the spreader outrigger via a linear bearing assembly 103 and a spring locking pin 104, enabling lateral adjustment of the rear support, i.e., adjustment in the Y direction, to meet the needs of chassis of different widths. Preferably, the lower end of the spreader outrigger is provided with a mounting hole, through which the linear bearing assembly passes. The support block of the rear support is located at the inner end of the linear bearing assembly, and the spring locking pin is located at the outer end of the linear bearing assembly. After the spring locking pin is unlocked, the Y-direction adjustment of the rear support of the spreader can be achieved. Alternatively, other existing telescopic adjustment structures can be used.

[0039] Preferably, the adjustment station 2 includes a base frame, a movable plate, a movable support, and a seat plate. The base frame is a long slide rail support 201 arranged longitudinally. The long slide rail support includes a front support frame, a rear support frame, and a top frame arranged longitudinally between the front support frame and the rear support frame. The movable plate is mounted on the top frame of the base frame via the slide rail. The seat plate is connected to the movable plate via the movable support, and the seat plate 207 is located below the movable plate. The seat plate can move and adjust its longitudinal position with the movable plate above it. The base frame is provided with a drive structure for driving the movable plate to move. The movable plate is provided with an upper adjustment structure for adjusting the movement of the clamping support legs. The seat plate is provided with a lower adjustment structure for adjusting the movement of the clamping support rear support.

[0040] The long slide rail bracket 201 is arranged longitudinally along its length. The top of the slide rail bracket is equipped with a lead screw and an upper servo motor 204. The lead screw is connected to the moving plate, making driving simple. The moving plate is equipped with a double slide rail cylinder 202, and a clamping head is provided for each double slide rail cylinder. The clamping head can clamp the support legs of the lifting device for forward and backward movement and adjustment. An upper unlocking cylinder 203 for unlocking the locking structure is provided above the moving plate.

[0041] The movable plate is equipped with a support frame, and the upper unlocking cylinder is mounted on the support frame, located above the double slide rail cylinder. The support frame is a square frame, and the upper unlocking cylinder is located at the top of the square frame. Unlocking is achieved by pushing the toothed block with the upper unlocking cylinder.

[0042] The lower adjustment structure includes a sliding plate and a lower servo motor 206 for driving the sliding plate to move. Both the sliding plate and the lower servo motor are mounted on a base plate, which is a horizontal plate. The sliding plate and the lower servo motor are connected by a lead screw sliding structure. A parallel cylinder 205 is mounted on the sliding plate, and a locking pin 2051 for clamping the movement of the rear support of the lifting device is mounted on the parallel cylinder. The locking pin structure can adopt a traditional clamping structure. A lower unlocking cylinder 209 is mounted on the base plate above the sliding plate. The lower unlocking cylinder is mounted on an L-shaped unlocking plate. The unlocking plate pulls the spring locking pin to unlock, thereby realizing the Y-axis movement adjustment of the rear support of the lifting device.

[0043] The movable support 208 includes a top frame, side frames, and a base frame connected in sequence. The top frame is connected to the movable plate, and the seat plate is horizontally set on the base frame. The upper and lower structures are integrated, which is simple in structure and efficient in adjustment.

[0044] The double-slide-rail cylinder 202 extends, driving the double-slider structure to move in the Y direction. Upon reaching its limit position, the parallel-opening wide cylinder clamps the lifting device's outriggers. The vertically positioned upper unlocking cylinder retracts its connecting rod, causing the toothed block to disengage from the rack. The upper servo motor drives the long double-slide-rail structure to move in the X direction, moving the lifting device's outriggers to the appropriate position on the large circular linear bearing. Simultaneously, the upper unlocking cylinder extends, engaging the toothed block with the rack to lock the position. The unlocking steps are reversed. Y-direction working principle: The lower unlocking cylinder retracts, causing the connecting rod to lift and disengage the spring locking pin from the lifting device's rear support. The parallel cylinder locks the outer end of the lifting device's rear support. The rear support structure uses a cylindrical linear bearing mechanism. The lower servo motor drives the slider structure to move in the Y direction to the appropriate position. The lower unlocking cylinder extends, causing the connecting rod and spring locking pin to lock the lifting device's rear support. After the parallel cylinder opens, the lower servo motor drives the locking structure to retract, completing the Y-direction switching.

[0045] The present invention features a rationally designed multi-model automatic chassis switching device mechanism. Each chassis device can be adjusted via an independent adjustment station, thereby enabling automatic distance switching when different sized models are produced on a mixed production line. The adjustment drive structure does not need to be installed on each chassis device, resulting in a simple device structure, small space occupation, stable and reliable operation, and relatively low cost.

[0046] The specific adjustment process of this invention is as follows:

[0047] After the chassis spreader enters the stop position of the adjustment station, the PLC control system sends a signal to the upper unlocking cylinder. The upper unlocking cylinders work to open the rack structure and put it in the unlocked state. The double slide rail cylinder extends the wide parallel cylinder to clamp the spreader legs. After the upper servo motor works to put the spreader legs in the designated vehicle position, the upper unlocking cylinders work to close the rack structure and put it in the locked state. At this time, the X-direction adjustment is completed.

[0048] The PLC control system sends a signal to the lower unlocking cylinder, which retracts and lifts the spring lock pin to the unlocked state. The parallel cylinder locks the rear support of the lifting device. The lower servo motor works to position the rear support of the lifting device at the designated vehicle position. Then, the lower unlocking cylinders work to close the locking structure and lock the rear support of the lifting device to the locked state. At this time, the Y-direction adjustment is completed, and a set of XY-direction actions is completed.

[0049] This invention enables automatic distance switching when vehicles with different wheelbase sizes are produced on a mixed production line, achieving flexible production, greatly improving production efficiency and saving equipment costs; the adjustment of the drive structure does not need to be set on each chassis hanger, that is, an independent adjustment station can be set up, simplifying the adjustment structure and reducing costs.

[0050] The above description is merely an illustration of preferred embodiments of the present invention, and the above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0051] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the concept and technical solution of the present invention, or the direct application of the concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A multi-vehicle automatic switching chassis lifting device mechanism, comprising a chassis lifting device, wherein the chassis lifting device includes a lifting device frame and a front lifting device pin structure and a rear lifting device support structure disposed on the lifting device frame, characterized in that: The lifting device rear support structure includes lifting device legs and a lifting device rear support that can be adjusted laterally at the lower end of the lifting device legs. The lifting device legs are longitudinally adjustable and are mounted on the frame. An adjustment station is provided on one side of the lifting device frame for adjusting the position of the lifting device legs and the position of the lifting device rear support for each chassis lifting device. The rear support of the lifting device is mounted on the lower end of the lifting device legs via a linear bearing assembly and a spring locking pin. The adjustment station includes a base frame, a movable plate, a movable support, and a seat plate. The movable plate is mounted on the top of the base frame via a slide rail. The seat plate is connected to the movable plate via the movable support and is located below the movable plate. The base frame is equipped with a drive structure for moving the movable plate. The movable plate is equipped with an upper adjustment structure for clamping and adjusting the movement of the lifting device legs. The seat plate is equipped with a lower adjustment structure for clamping and adjusting the movement of the rear support of the lifting device. The lower adjustment structure includes a sliding plate and a lower servo motor for driving the sliding plate. The sliding plate is equipped with a parallel cylinder, and the parallel cylinder is equipped with a locking pin structure for clamping and adjusting the movement of the rear support of the lifting device. The movable plate is equipped with a double slide rail cylinder, and a clamping head is provided corresponding to the double slide rail cylinder; an upper unlocking cylinder for unlocking the locking structure is provided above the movable plate; the movable support includes a top frame, a side frame and a base frame connected in sequence, the top frame is connected to the movable plate, and the seat plate is horizontally set on the base frame; a lower unlocking cylinder is provided on the seat plate above the slide plate, and an unlocking plate is provided on the lower unlocking cylinder for pulling the spring locking pin to unlock.

2. The multi-vehicle automatic chassis switching suspension mechanism as described in claim 1, characterized in that: The frame has longitudinal bars along its side, and the lifting legs are movably mounted on the longitudinal bars. A locking structure is provided between the lifting legs and the side of the frame.

3. The multi-vehicle automatic chassis switching suspension mechanism as described in claim 1, characterized in that: The base frame is a slide rail support, which is arranged longitudinally along its length. The top of the slide rail support is equipped with a lead screw and an upper servo motor, and the lead screw is connected to the moving plate.

4. The multi-vehicle automatic chassis switching suspension mechanism as described in claim 1, characterized in that: The movable plate is equipped with a support frame, and the upper unlocking cylinder is mounted on the support frame, located above the double slide rail cylinder.

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