Vehicle body and chassis assembly device and vehicle body and chassis assembly method

Abstract

The present disclosure relates to a vehicle body and chassis splicing device and a vehicle body and chassis splicing method. The vehicle body and chassis splicing device comprises a vehicle body lifting device, a transfer device and a tray. The vehicle body lifting device is provided with a vehicle body positioning part for positioning cooperation with a vehicle body. The transfer device comprises a lifting platform. The transfer device is movably arranged below the vehicle body lifting device. The tray is arranged on the upper side of the lifting platform and connected with the lifting platform. The tray is provided with a chassis positioning part for positioning cooperation with a chassis. The vehicle body and chassis splicing device of the present disclosure connects the tray provided with the chassis positioning part with the lifting platform of the transfer device, so that the transfer device can not only realize the transfer of the chassis, but also realize the lifting of the chassis. The overall structure of the vehicle body and chassis splicing device can be simplified, and the cost of the vehicle body and chassis splicing device can be reduced. Moreover, the process of splicing the vehicle body and the chassis can be simplified, and the cost of the vehicle body and chassis splicing device can be reduced.

Description

Technical Field

[0001] This disclosure relates to the field of vehicle technology, specifically to a vehicle body and chassis assembly device and a vehicle body and chassis assembly method. Background Technology

[0002] In related technologies, the body and chassis assembly device used in the final assembly workshop includes a conveying device, a lifting platform, and a body hoist. The chassis is transported to the lifting platform via the conveying device, the body is lifted using the body hoist, and the chassis is lifted using the lifting platform, thus achieving the assembly of the chassis and body. This body and chassis assembly device requires separate conveying devices for transferring the chassis, lifting platforms for lifting the chassis, and body hoists for lifting the body. This not only results in a complex structure and high cost for the body and chassis assembly device, but also in a complex and costly assembly process. Summary of the Invention

[0003] This disclosure proposes a vehicle body and chassis assembly device to simplify the structure of the vehicle body and chassis assembly device and reduce its cost.

[0004] The vehicle body and chassis assembly device disclosed herein includes a vehicle body hanger, a transfer device, and a pallet. The vehicle body hanger is provided with a vehicle body positioning part for cooperating with vehicle body positioning. The transfer device is movably disposed below the vehicle body hanger and includes a lifting platform. The pallet is disposed above the lifting platform and connected to the lifting platform, and the pallet is provided with a chassis positioning part for cooperating with chassis positioning.

[0005] Optionally, the vehicle body lifting device is provided with a lifting device positioning part, and the pallet is provided with a first pallet positioning part for positioning and cooperating with the lifting device positioning part.

[0006] Optionally, the tray includes a base, which is movably connected to the lifting platform in a horizontal direction, and the first tray positioning part is disposed on the base.

[0007] Optionally, the tray includes a first frame and a second frame. The first frame is disposed on the upper side of the lifting platform and is movably connected to the lifting platform along the first horizontal direction. The second frame is disposed on the upper side of the first frame and is movably connected to the first frame along the second horizontal direction. The base is disposed on the upper side of the second frame and connected to the second frame, wherein the second horizontal direction is perpendicular to the first horizontal direction.

[0008] Optionally, the lifting platform is provided with a first limiting part, the first frame is provided with a second limiting part, and the second limiting part is used to stop against the first limiting part along the first horizontal direction; and / or, the first frame is provided with a third limiting part, the second frame is provided with a fourth limiting part, and the fourth limiting part is used to stop against the third limiting part along the second horizontal direction.

[0009] Optionally, the lifting device positioning part is a lifting device positioning hole, and the first pallet positioning part is a positioning pin; the first pallet positioning part is a telescopic positioning pin that can extend and retract in the vertical direction; and / or, the first pallet positioning part includes a first variable diameter section, the upper end of the first variable diameter section forms the upper end of the first pallet positioning part, and the diameter of the first variable diameter section gradually increases in the vertical direction.

[0010] Optionally, the pallet is provided with a second pallet positioning part for cooperating with vehicle body positioning.

[0011] Optionally, the pallet includes a base and a support platform. The base is located on the upper side of the lifting platform and connected to the lifting platform. The support platform is located on the upper side of the base and is movably connected to the base along a first horizontal direction and / or a second horizontal direction. The second pallet positioning part is located on the support platform.

[0012] Optionally, the tray includes a connecting assembly comprising a first movable member, a second movable member, and a resilient reset member. The first movable member is movably connected to the second movable member along the horizontal direction, and the first movable member is movably connected to the base along the vertical direction. The second movable member is connected to the support platform. The resilient reset member is disposed between the first movable member and the base, and the resilient reset member is used to provide a spring force to the first movable member toward the second movable member.

[0013] Optionally, the connecting assembly further includes a first support, a second support, and a guide member. The first support is connected to the base and has a first guide portion. The second support is connected to the support platform, and the second movable member is connected to the second support. The guide member has a second guide portion that movably engages with the first guide portion in the vertical direction. The first movable member is connected to the guide member, and the elastic reset member is disposed between the first movable member and the first support.

[0014] Optionally, one of the base and the support platform is provided with a fifth limiting part, and the other is provided with a plurality of sixth limiting parts, the plurality of sixth limiting parts being arranged circumferentially around the fifth limiting part.

[0015] Optionally, the number of the support platforms is multiple, and the tray further includes a connecting frame. The connecting frame is disposed between the base and the support platforms, and the connecting frame is movably connected to the base along the horizontal direction. All of the multiple support platforms are connected to the connecting frame.

[0016] Optionally, the support platform is detachably connected to the connecting frame.

[0017] Optionally, the second pallet positioning part is a positioning pin, the second pallet positioning part includes a second variable diameter section, the upper end of the second variable diameter section forms the upper end of the second pallet positioning part, and the diameter of the second variable diameter section gradually increases from top to bottom.

[0018] Optionally, the vehicle positioning part is a vehicle positioning pin, which includes a first positioning segment and a second positioning segment. The first positioning segment is located on the upper side of the second positioning segment, and the end of the first positioning segment away from the second positioning segment is the upper end of the vehicle positioning pin. The diameter of the first positioning segment gradually increases from top to bottom.

[0019] This disclosure also proposes a method for assembling the vehicle body and chassis.

[0020] The method for assembling the vehicle body and chassis disclosed herein includes the following steps:

[0021] Position the vehicle body on the vehicle body lifting device and position the chassis on the pallet connected to the lifting platform of the transfer device;

[0022] The transfer device moves to below the vehicle body lifting device to move the chassis to below the vehicle body;

[0023] The lifting platform of the transfer device moves upward to fit the chassis against the vehicle body.

[0024] Optionally, the lifting platform of the transfer device moves upward to fit the chassis against the vehicle body, including the following steps:

[0025] The lifting platform of the transfer device moves upward to position and engage the first pallet positioning part of the pallet with the lifting positioning part of the vehicle body hanger, thereby achieving coarse positioning between the chassis and the vehicle body.

[0026] Optionally, the lifting platform of the transfer device moves upward to fit the chassis against the vehicle body, including the following steps:

[0027] After the first pallet positioning part of the pallet is positioned and engaged with the lifting device positioning part of the vehicle body hanger, the lifting platform of the transfer device continues to move upward to engage the second pallet positioning part of the pallet with the vehicle body, thereby achieving precise positioning between the chassis and the vehicle body.

[0028] Optionally, the lifting platform of the transfer device moves upward to fit the chassis against the vehicle body, including the following steps:

[0029] The second pallet positioning part of the pallet cooperates with the vehicle body positioning part, and after the chassis contacts the vehicle body, the lifting platform of the transfer device continues to move upward to release the vehicle body lifting device from the vehicle body, so that the vehicle body floats with the chassis in the vertical direction.

[0030] The disclosed body and chassis assembly device connects a pallet equipped with a chassis positioning part to a lifting platform of a transfer device. This allows the transfer device to not only transfer the chassis but also lift it. This simplifies the overall structure of the body and chassis assembly device, reduces its cost, and simplifies the assembly process, further reducing the cost of the assembly device. Attached Figure Description

[0031] Figure 1 This is a diagram showing the usage state of a vehicle body and chassis assembly device according to an embodiment of this disclosure.

[0032] Figure 2 This is a rear view of a vehicle body and chassis assembly device according to an embodiment of the present disclosure.

[0033] Figure 3 This is a perspective view of a vehicle body and chassis assembly device in a coarse positioning state according to an embodiment of the present disclosure.

[0034] Figure 4 yes Figure 3 A magnified view of point C in the middle.

[0035] Figure 5 This is a perspective view of a vehicle body and chassis assembly device in a precisely positioned state according to an embodiment of this disclosure.

[0036] Figure 6 yes Figure 5 Enlarged view of point B in the middle.

[0037] Figure 7 This is a perspective view of a vehicle body and chassis assembly device according to an embodiment of the present disclosure in a floating vehicle body state.

[0038] Figure 8 yes Figure 7 A magnified view of point C in the middle.

[0039] Figure 9 This is a perspective view of the pallet in a vehicle body and chassis assembly device according to an embodiment of the present disclosure.

[0040] Figure 10yes Figure 9 Enlarged view of point D in the middle.

[0041] Figure 11 This is a perspective view of the pallet in a vehicle body and chassis assembly device according to an embodiment of this disclosure.

[0042] Figure 12 yes Figure 11 A magnified view of point E in the middle.

[0043] Figure 13 yes Figure 11 Enlarged view of point F in the middle.

[0044] Figure 14 This is a cross-sectional view of the connecting component of the pallet in a vehicle body and chassis assembly device according to an embodiment of this disclosure.

[0045] Figure label:

[0046] 1. Vehicle body lifting device; 11. Vehicle body positioning unit; 111. First positioning section; 112. Second positioning section; 12. Lifting device positioning unit;

[0047] 2. Transfer device; 21. Lifting platform; 211. Slide rail;

[0048] 3. Pallet; 31. First pallet positioning part; 311. First diameter changing section; 32. Second pallet positioning part; 321. Second diameter changing section; 33. Chassis positioning part; 34. First limiting part; 35. Second limiting part; 36. Third limiting part; 37. Fourth limiting part; 301. First frame; 302. Second frame; 3021. Roller; 303. Base; 304. Support platform; 3041. Front axle support platform; 3042. Battery pack support platform; 3043. Rear axle support platform; 305. Connecting assembly; 3051. First support; 3052. Elastic reset component; 3053. Guide component; 3054. First moving component; 3055. Second moving component; 3056. Second support; 306. Connecting frame;

[0049] 4. Clamping mechanism;

[0050] 5. Body; 51. First positioning hole; 52. Second positioning hole. Detailed Implementation

[0051] Embodiments of this disclosure are described in detail below, with examples of these embodiments illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting it.

[0052] like Figures 1 to 4As shown, the vehicle body and chassis assembly device of this embodiment includes a vehicle body lifting device 1, a transfer device 2, and a pallet 3. The transfer device 2 is movably disposed below the vehicle body lifting device 1. The transfer device 2 includes a lifting platform 21, and the pallet 3 is disposed on the upper side of the lifting platform 21 and connected to the lifting platform 21. The vehicle body lifting device 1 is provided with a vehicle body positioning part 11 for positioning and engaging with the vehicle body 5. The pallet 3 is provided with a chassis positioning part 33 for positioning and engaging with the chassis.

[0053] like Figure 1 and Figure 2 As shown, in this embodiment of the vehicle body and chassis assembly device, when assembling the vehicle body 5 and chassis, the chassis is positioned and engaged with the chassis positioning part 33 of the pallet 3 to position the chassis on the pallet 3; the vehicle body 5 is positioned and engaged with the vehicle body positioning part 11 of the vehicle body hanger 1 to position the vehicle body 5 on the vehicle body hanger 1. By connecting the pallet 3 to the lifting platform 21 of the transfer device 2, the chassis can be transferred to the vehicle body hanger 1 with the vehicle body 5 positioned thereon using the transfer device 2; then the lifting platform 21 of the transfer device 2 is used to lift the chassis, so that the chassis and vehicle body 5 fit together, thus realizing the assembly of the chassis and vehicle body 5.

[0054] The vehicle body and chassis assembly device of this disclosure connects the pallet 3, which is provided with the chassis positioning part 33, to the lifting platform 21 of the transfer device 2. This allows the transfer device 2 to not only transfer the chassis but also lift it. This simplifies the overall structure of the vehicle body and chassis assembly device and reduces its cost. Furthermore, it simplifies the assembly process of the vehicle body 5 and the chassis, further reducing the cost of the vehicle body and chassis assembly device.

[0055] Optionally, the vehicle body lifting device 1 is an Engine-Management-System (EMS) lifting device. The transfer device 2 is an Automated Guided Vehicle (AGV).

[0056] By setting the vehicle body lifting device 1 as an EMS lifting device and the transfer device 2 as an AGV, the existing equipment used for lifting the vehicle body 5 and transferring the chassis can be used to achieve the assembly of the vehicle body 5 and the chassis, thereby reducing the design cost of the vehicle body and chassis assembly device.

[0057] In some embodiments, such as Figure 1 and Figure 2 As shown, the body and chassis assembly device also includes a clamping mechanism 4, which is used to clamp the body 5 onto the chassis. The clamping mechanism 4 can be any clamping mechanism found in related technologies, and will not be described in detail here.

[0058] In practical use, after the chassis and body 5 are fitted together, the clamping mechanism 4 is used to press the body 5 onto the chassis to prevent the body 5 from moving relative to the chassis; then, the body 5 is connected to the chassis to ensure the assembly accuracy of the body 5 and the chassis.

[0059] By setting up the clamping mechanism 4, the body 5 can be prevented from moving relative to the chassis after it is fitted with the chassis, thereby improving the assembly accuracy of the body 5 and the chassis.

[0060] In some embodiments, such as Figure 3 and Figure 4 As shown, the vehicle body lifting device 1 is provided with a lifting device positioning part 12, and the pallet 3 is provided with a first pallet positioning part 31 for positioning and cooperating with the lifting device positioning part 12.

[0061] By setting a lifting device positioning part 12 on the vehicle body lifting device 1 and a first pallet positioning part 31 on the pallet 3, the first pallet positioning part 31 and the lifting device positioning part 12 can be used to position and cooperate during the process of lifting the chassis using the lifting platform 21 of the transfer device 2, so as to realize the automatic positioning between the vehicle body 5 and the chassis. This facilitates the positioning between the vehicle body 5 and the chassis, further simplifies the process of assembling the vehicle body 5 and the chassis, and reduces the cost of the vehicle body and chassis assembly device.

[0062] In some embodiments, such as Figure 5 and Figure 6 As shown, the pallet 3 is provided with a second pallet positioning part 32 for positioning and cooperating with the vehicle body 5.

[0063] For example, after the first pallet positioning part 31 and the lifting device positioning part 12 are positioned and engaged, the chassis is further lifted by the lifting platform 21 of the transfer device 2 to achieve the positioning and engagement of the second pallet positioning part 32 and the vehicle body 5.

[0064] By setting a second pallet positioning part 32 on the pallet 3, the second pallet positioning part 32 can be used to position and cooperate with the body 5 during the process of lifting the chassis using the lifting platform 21 of the transfer device 2, so as to realize the automatic positioning between the body 5 and the chassis, which facilitates the positioning between the body 5 and the chassis, further simplifies the process of assembling the body 5 and the chassis, and reduces the cost of the body and chassis assembly device.

[0065] Optionally, such as Figure 4 As shown, the lifting device positioning part 12 is a lifting device positioning hole, and the first pallet positioning part 31 is a telescopic positioning pin that can extend and retract in the vertical direction.

[0066] The telescopic positioning pin can be equipped with a spring to achieve its extension and retraction; alternatively, a drive mechanism can be installed on the telescopic positioning pin to extend and retract it. The telescopic positioning pin can be welded, bonded, or connected to the tray 3 by fasteners such as bolts, screws, or rivets.

[0067] By setting the lifting device positioning part 12 as a lifting device positioning hole and setting the first pallet positioning part 31 as a telescopic positioning pin that can extend and retract in the vertical direction, after the first pallet positioning part 31 and the lifting device positioning part 12 are positioned and engaged, the lifting platform 21 continues to lift the chassis to make the second pallet positioning part 32 and the vehicle body 5 positioned and engaged. By compressing the telescopic positioning pin, the first pallet positioning part 31 and the lifting device positioning part 12 are kept in a positioning state, which further improves the assembly accuracy of the vehicle body 5 and the chassis.

[0068] Optionally, such as Figure 6 As shown, the second pallet positioning part 32 is a positioning pin, and the vehicle body 5 is provided with a first positioning hole 51. The second pallet positioning part 32 is positioned and engaged with the first positioning hole 51. The second pallet positioning part 32 and the pallet 3 can be welded, glued, or connected by fasteners, such as bolts, screws, or rivets.

[0069] By setting the second pallet positioning part 32 as a positioning pin, the structure of the second pallet positioning part 32 is simple and easy to process and manufacture, which helps to further reduce the cost of the vehicle body and chassis assembly device.

[0070] Optionally, such as Figure 3 As shown, the tray 3 includes a base 303, which is movably connected to the lifting platform 21 in the horizontal direction. A first tray positioning part 31 is provided on the base 303.

[0071] By making the base 303 movably connected to the lifting platform 21 in the horizontal direction, the base 303 can move relative to the lifting platform 21 in the horizontal direction. Thus, when the first pallet positioning part 31 and the lifting device positioning part 12 are misaligned in the horizontal direction, the positioning and coordination of the first pallet positioning part 31 and the lifting device positioning part 12 can be achieved by moving the base 303 in the horizontal direction, thereby improving the practicality of the vehicle body and chassis assembly device.

[0072] Optionally, the base 303 is movably connected to the lifting platform 21 along a first horizontal direction and a second horizontal direction. The second horizontal direction is perpendicular to the first horizontal direction.

[0073] For example, the first horizontal direction is the front-to-back direction, and the second horizontal direction is the left-to-right direction. The base 303 is movably connected to the lifting platform 21 along the front-to-back horizontal direction and the left-to-right horizontal direction.

[0074] Optionally, such as Figure 4 and Figure 12 As shown, the first pallet positioning part 31 includes a first variable diameter section 311, the upper end of which forms the upper end of the first pallet positioning part 31. The diameter of the first variable diameter section 311 gradually increases from top to bottom.

[0075] By providing a first variable diameter section 311 in the first pallet positioning part 31, when there is a small misalignment between the first pallet positioning part 31 and the lifting device positioning hole in the horizontal direction, the upper end of the first variable diameter section 311 can also be inserted into the lifting device positioning hole due to its smaller upper diameter, thereby achieving positioning and cooperation between the first pallet positioning part 31 and the lifting device positioning part 12 and improving the practicality of the vehicle body and chassis assembly device.

[0076] Optionally, such as Figure 3 and Figure 9 As shown, the tray 3 includes a first frame 301 and a second frame 302. The first frame 301 is located on the upper side of the lifting platform 21 and is movably connected to the lifting platform 21 along a first horizontal direction. The second frame 302 is located on the upper side of the first frame 301 and is movably connected to the first frame 301 along a second horizontal direction. A base 303 is located on the upper side of the second frame 302 and is connected to the second frame 302.

[0077] By configuring the tray 3 as a series of stacked components—a first frame 301, a second frame 302, and a base 303—from bottom to top, a moving mechanism can be easily installed between the first frame 301, the second frame 302, and the base 303, enabling the base 303 to move relative to the lifting platform 21 along a first horizontal direction and a second horizontal direction. This facilitates the manufacturing of the vehicle body and chassis assembly device and helps to further reduce its cost.

[0078] Optionally, such as Figure 10 As shown, the upper side of the lifting platform 21 is provided with a slide rail 211, which extends along a first horizontal direction. The lower side of the first frame 301 is provided with a slider (not shown in the figure), which slidably engages with the slide rail 211 along the first horizontal direction. The slide rail 211 and the lifting platform 21 can be welded, bonded, or connected by fasteners, and the slider and the first frame 301 can be welded, bonded, or connected by fasteners, such as bolts, screws, or rivets.

[0079] By setting a slide rail 211 on the lifting platform 21 and a slider on the first frame 301, the slider and the slide rail 211 can be used to guide the first frame 301 to move relative to the lifting platform 21 in the first horizontal direction, avoiding the first frame 301 from tilting during the movement relative to the lifting platform 21 in the first horizontal direction, which helps to improve the reliability of the vehicle body and chassis splicing device.

[0080] Optionally, such as Figure 10 As shown, the second frame 302 is provided with a roller 3021, and the first frame 301 is provided with a slide rail (not shown in the figure) extending along the second horizontal direction. The roller 3021 rolls and engages with the slide rail along the second horizontal direction. The roller 3021 and the second frame 302 can be connected by fasteners, such as bolts, screws, or rivets.

[0081] By setting rollers 3021 on the second frame 302 and slide rails on the first frame 301, the rollers 3021 can be rolled in cooperation with the slide rails to guide the second frame 302 to move relative to the first frame 301 in a second horizontal direction. This avoids the second frame 302 from tilting relative to the first frame 301 during its movement in the second horizontal direction, which helps to improve the reliability of the vehicle body and chassis assembly device.

[0082] Optionally, such as Figure 10 As shown, the lifting platform 21 is provided with a first limiting part 34, and the first frame 301 is provided with a second limiting part 35. The second limiting part 35 is used to stop against the first limiting part 34 in the first horizontal direction.

[0083] For example, the first limiting part 34 is a first limiting block, which is connected to the lifting platform 21 via a spring, and the spring is extendable and retractable along the first horizontal direction; the second limiting part 35 is a second limiting block, which, when the first frame 301 moves relative to the lifting platform 21 to the first preset position along the first horizontal direction, uses the second limiting block to limit the movement of the first frame 301 relative to the lifting platform 21, thereby limiting the movement between the first frame 301 and the lifting platform 21. The first limiting block and the lifting platform 21 can be welded, bonded, or connected by fasteners, and the second limiting block and the first frame 301 can be welded, bonded, or connected by fasteners. These fasteners can be bolts, screws, or rivets, etc.

[0084] By providing a first limiting part 34 on the lifting platform 21 and a second limiting part 35 on the first frame 301, the second limiting part 35 can abut against the first limiting part 34 during the movement of the first frame 301 relative to the lifting platform 21 in the first horizontal direction, thus limiting the movement of the first frame 301 and the lifting platform 21 in the first horizontal direction. This limits the movement distance of the base 303 relative to the lifting platform 21 in the first horizontal direction, facilitating the design of the movement distance of the base 303 relative to the lifting platform 21 according to requirements.

[0085] Optionally, the maximum moving distance of the base 303 relative to the lifting platform 21 in the first horizontal direction is 10mm.

[0086] For example, taking the centerline of the lifting device positioning hole as the initial position, the distance between the maximum moving distance of the base 303 and the centerline of the lifting device positioning hole in the first horizontal direction is 5mm. Furthermore, when the distance between the maximum moving distance of the base 303 and the centerline of the lifting device positioning hole is 5mm, it is necessary to ensure that the upper end of the first variable diameter section 311 can still be inserted into the lifting device positioning hole. That is, during the movement of the base 303 relative to the lifting platform 21 in the first horizontal direction, the first variable diameter section 311 can be inserted into the lifting device positioning hole.

[0087] Optionally, the first frame 301 is provided with a third limiting part 36, and the second frame 302 is provided with a fourth limiting part 37, the fourth limiting part 37 being used to stop against the third limiting part 36 in two horizontal directions.

[0088] For example, the third limiting part 36 is a third limiting block, and the end of the roller 3021 facing the third limiting block forms a fourth limiting part 37. When the second frame 302 moves relative to the first frame 301 in the second horizontal direction to the second preset position, the roller 3021 and the third limiting block engage to prevent the second frame 302 from continuing to move relative to the first frame 301 in the first horizontal direction, thus limiting the movement between the second frame 302 and the first frame 301. The third limiting block and the first frame 301 can be welded, bonded, or connected by fasteners such as bolts, screws, or rivets.

[0089] By providing a third limiting part 36 on the first frame 301 and a fourth limiting part 37 on the second frame 302, the fourth limiting part 37 can abut against the third limiting part 36 during the movement of the second frame 302 relative to the first frame 301 in the second horizontal direction, thus limiting the movement of the second frame 302 and the first frame 301 in the second horizontal direction. This limits the movement distance of the base 303 relative to the lifting platform 21 in the second horizontal direction, facilitating the design of the movement distance of the base 303 relative to the lifting platform 21 in the first horizontal direction according to requirements.

[0090] Optionally, the maximum distance the base 303 can move relative to the lifting platform 21 in the second horizontal direction is 10 mm.

[0091] Optionally, the maximum distance the base 303 can move relative to the lifting platform 21 in the second horizontal direction is 10 mm.

[0092] For example, taking the centerline of the lifting device positioning hole as the initial position, the distance between the maximum moving distance of the base 303 and the centerline of the lifting device positioning hole in the second horizontal direction is 5mm. Furthermore, when the distance between the maximum moving distance of the base 303 and the centerline of the lifting device positioning hole is 5mm, it is necessary to ensure that the upper end of the first variable diameter section 311 can still be inserted into the lifting device positioning hole. That is, during the movement of the base 303 relative to the lifting platform 21 in the second horizontal direction, the first pallet positioning part 31 can be inserted into the lifting device positioning hole.

[0093] Optionally, such as Figure 3 , Figure 9 and Figure 11 As shown, the tray 3 includes a support platform 304, which is disposed on the upper side of the base 303. The support platform 304 is movably connected to the base 303 in the horizontal direction, and a second tray positioning part 32 is disposed on the support platform 304.

[0094] By making the support platform 304 movably connected to the base 303 in the horizontal direction, the support platform 304 can move relative to the base 303 in the horizontal direction. Thus, when the second pallet positioning part 32 and the first positioning hole 51 of the vehicle body 5 are misaligned in the horizontal direction, the support platform 304 can be moved in the horizontal direction to achieve positioning and engagement between the second pallet positioning part 32 and the vehicle body 5, thereby improving the practicality of the vehicle body and chassis assembly device.

[0095] Optionally, the support platform 304 is movably connected to the base 303 along a first horizontal direction and a second horizontal direction.

[0096] Optionally, such as Figure 6 and Figure 13 As shown, the second tray positioning part 32 includes a second variable diameter section 321, the upper end of which forms the upper end of the second tray positioning part 32. The diameter of the second variable diameter section 321 gradually increases from top to bottom.

[0097] By providing a second variable diameter section 321 in the second pallet positioning part 32, when there is a small misalignment between the second pallet positioning part 32 and the first positioning hole 51 of the vehicle body 5 in the horizontal direction, the upper end of the second variable diameter section 321 can also be inserted into the first positioning hole 51 due to its smaller upper diameter, thereby achieving positioning and cooperation between the second pallet positioning part 32 and the vehicle body 5 and improving the practicality of the vehicle body and chassis assembly device.

[0098] Optionally, such as Figure 14As shown, the tray 3 includes a connecting assembly 305, which includes a first movable member 3054, a second movable member 3055, and a resilient reset member 3052. The first movable member 3054 is movably connected to the second movable member 3055 in the horizontal direction. The first movable member 3054 is movably connected to the base 303 in the vertical direction, and the second movable member 3055 is connected to the support platform 304. The resilient reset member 3052 is disposed between the first movable member 3054 and the base, and provides a spring force to the first movable member 3054 toward the second movable member 3055.

[0099] For example, the first moving part 3054 is a ball head, and the second moving part 3055 is a ball cup. The center lines of both the ball head and the ball cup extend in the vertical direction, and the ball head mates with the ball cup. By setting the center lines of both the ball head and the ball cup to extend in the vertical direction, and the ball head mates with the ball cup, the ball head can move relative to the ball cup in the first horizontal direction and the second horizontal direction.

[0100] By connecting the first movable member 3054 to the base 303 and the second movable member 3055 to the support platform 304, the support platform 304 can move horizontally relative to the base 303 when subjected to an external force in the horizontal direction. Furthermore, by configuring the first movable member 3054 to be movably connected to the base 303 in the vertical direction, and by using the elastic reset member 3052 to provide a spring force towards the second movable member 3054, the support platform 304 automatically resets under the spring force of the elastic reset member 3052 when the external force in the horizontal direction disappears.

[0101] Therefore, the aforementioned connecting component 305 can not only enable the support platform 304 to move horizontally relative to the base 303, but also enable the support platform 304 to automatically reset, facilitating the reuse of the vehicle body and chassis assembly device and further improving the practicality of the vehicle body and chassis assembly device.

[0102] Optionally, such as Figure 14 As shown, the connecting assembly 305 further includes a first support 3051, a second support 3056, and a guide member 3053. The first support 3051 is connected to the base, and the second support 3056 is connected to the support platform. The second movable member 3055 is connected to the second support 3056. The first support 3051 is provided with a first guide portion, and the guide member 3053 is provided with a second guide portion, which movably engages with the first guide portion in the vertical direction. The first movable member 3054 is connected to the guide member 3053, and an elastic reset member 3052 is disposed between the first movable member 3054 and the first support 3051.

[0103] The first support 3051 can be welded, bonded or connected to the base 303 by fasteners, and the second support 3056 can be welded, bonded or connected to the support platform by fasteners, such as bolts, screws or rivets.

[0104] For example, the first support 3051 is provided with a guide hole extending in the vertical direction, and the guide member 3053 is a guide post extending in the vertical direction. The guide member 3053 is inserted into the guide hole and mates with the guide hole. The guide member 3053 is provided with a mounting groove, and a part of the first moving member 3054 is disposed in the mounting groove and connected to the guide member 3053.

[0105] Therefore, by using the second guide part in conjunction with the first guide part, the first moving part 3054 is guided to move in the vertical direction relative to the base 303, so as to avoid the first moving part 3054 from deflection, which helps to improve the reliability of the connecting component 305.

[0106] Optionally, such as Figure 14 As shown, the guide member 3053 is provided with a guide groove, and the elastic reset member 3052 is a compression spring, which is located in the guide groove.

[0107] By placing the elastic reset member 3052 in the guide groove of the guide member 3053, the size of the connecting assembly 305 in the vertical direction can be reduced, which is beneficial to reducing the size of the pallet 3 in the vertical direction, thereby saving the material cost of the pallet 3 and further reducing the cost of the vehicle body and chassis assembly device.

[0108] Optionally, one of the base 303 and the support platform 304 is provided with a fifth limiting part, and the other is provided with a plurality of sixth limiting parts, which are arranged circumferentially around the fifth limiting part.

[0109] For example, the fifth limiting part is the first limiting post, the sixth limiting part is the second limiting post, and there are multiple second limiting posts. The multiple second limiting posts are arranged circumferentially around the first limiting post, so that the movement range of the first limiting post is the space enclosed by the multiple second limiting posts.

[0110] This limits the movement distance between the support platform 304 and the base 303 in the first and second horizontal directions. This allows for convenient design of the movement distance between the support platform 304 and the base 303 in the first and second horizontal directions according to requirements.

[0111] Optionally, the maximum moving distance of the support platform 304 relative to the base 303 in the first horizontal direction is 6mm; the maximum moving distance of the support platform 304 relative to the base 303 in the second horizontal direction is 6mm.

[0112] For example, taking the centerline of the first positioning hole 51 on the vehicle body 5 as the initial position, the distance between the maximum moving distance of the support platform 304 and the centerline of the first positioning hole 51 in the first horizontal direction and the second horizontal direction is 3mm. Furthermore, when the distance between the maximum moving distance of the support platform 304 and the centerline of the first positioning hole 51 is 3mm, it is necessary to ensure that the upper end of the second variable diameter section 321 can still be inserted into the first positioning hole 51. That is, during the movement of the support platform 304 relative to the base 303 along the first horizontal direction and the second horizontal direction, the second tray positioning part 32 can always be inserted into the first positioning hole 51.

[0113] Optionally, such as Figure 3 , Figure 4 and Figure 8 As shown, the vehicle body positioning part 11 is a vehicle body positioning pin. The vehicle body positioning pin includes a first positioning section 111 and a second positioning section 112. The first positioning section 111 is located on the upper side of the second positioning section 112. The end of the first positioning section 111 away from the second positioning section 112 is the upper end of the vehicle body positioning pin. The diameter of the first positioning section 111 gradually increases from top to bottom.

[0114] For example, such as Figure 4 and Figure 8 As shown, the first positioning section 111 is conical, and the second positioning section 112 is cylindrical. The vehicle body 5 is provided with a second positioning hole 52, and the vehicle body positioning part 11 is used to position and cooperate with the second positioning hole 52.

[0115] By setting the diameter of the first positioning segment 111 to gradually increase from top to bottom, after the chassis and body 5 are in contact, the lifting platform 21 continues to lift the chassis. When the second positioning hole 52 of the body 5 is pushed out of the second positioning segment 112, the second positioning hole 52 of the body 5 enters the first positioning segment 111. At this time, the second positioning hole 52 is disengaged from the positioning engagement with the second positioning segment 112, and the body 5 can float relative to the chassis in the vertical direction. The posture of the body 5 can follow the posture change of the chassis, releasing the stress of the matching error between the chassis and the body 5, achieving a good splicing effect between the body 5 and the chassis, and further improving the assembly accuracy of the body 5 and the chassis.

[0116] For example, the dimension of the first positioning segment 111 in the vertical direction is L, and the distance by which the body 5 floats relative to the chassis in the vertical direction is L.

[0117] It should be noted that after the lifting platform 21 continues to lift the chassis and pushes the second positioning hole 52 of the body 5 out of the second positioning section 112, it is necessary to avoid pushing the second positioning hole 52 out of the first positioning section 111. This is to ensure that after the body 5 and the chassis are assembled, the second positioning hole 52 can enter the body positioning part 11 after the lifting platform 21 of the transfer device 2 descends, so that the body lifting tool 1 can be used to lift the body 5 and the chassis as a whole.

[0118] Optionally, there are multiple support platforms 304, and the tray 3 also includes a connecting frame 306. The connecting frame 306 is disposed between the base 303 and the support platform 304, and the connecting frame 306 is movably connected to the base 303 along a first horizontal direction and / or a second horizontal direction. All of the multiple support platforms 304 are connected to the connecting frame 306.

[0119] For example, such as Figure 11 As shown, there are three support platforms 304, namely a front axle support platform 3041, a battery pack support platform 3042, and a rear axle support platform 3043. The front axle support platform 3041 is used to support the front axle, and its chassis positioning part 33 is used to position and cooperate with the front axle. The battery pack support platform 3042 is used to support the battery pack, and its chassis positioning part 33 is used to position and cooperate with the battery pack. The rear axle support platform 3043 is used to support the rear axle, and its chassis positioning part 33 is used to position and cooperate with the rear axle.

[0120] By setting multiple support platforms 304, different components of the chassis can be supported, facilitating the overall assembly of the body 5 and the chassis and improving the assembly accuracy of the body 5 and chassis. Furthermore, all multiple support platforms 304 are connected to the base 303 via connecting frames 306, allowing for simultaneous synchronous movement of multiple support platforms 304 via the movable connecting frames 306. This further simplifies the overall structure of the body and chassis assembly device and reduces its cost.

[0121] Optionally, the support platform 304 can be detachably connected to the connecting frame 306.

[0122] By detachably connecting the support platform 304 and the connecting frame 306, the support platform 304 of the body and chassis assembly device can be replaced, thereby enabling the body and chassis assembly device to be used for assembling the body 5 and chassis of different models, improving the versatility of the body and chassis assembly device.

[0123] The vehicle body and chassis assembly method of this disclosure includes the following steps:

[0124] Position the vehicle body 5 on the vehicle body hanger 1, and position the chassis on the pallet 3 connected to the lifting platform 21 of the transfer device 2;

[0125] The transfer device 2 is moved to the underside of the vehicle body hanger 1 to move the chassis to the underside of the vehicle body 5;

[0126] The lifting platform 21 of the transfer device 2 moves upward to fit the chassis with the vehicle body 5. For example, the vehicle body and chassis assembly method of this disclosure embodiment is implemented using the vehicle body and chassis assembly device described in any of the above embodiments. The chassis is positioned and engaged with the chassis positioning part 33 of the pallet 3, thereby positioning the chassis on the pallet 3; the second positioning hole 52 of the vehicle body 5 is positioned and engaged with the vehicle body positioning part 11 of the vehicle body hanger 1, thereby positioning the vehicle body 5 on the vehicle body hanger 1.

[0127] The vehicle body and chassis assembly method of this disclosure uses a transfer device 2 to not only transfer the chassis but also lift it, which simplifies the assembly process of the vehicle body 5 and chassis and reduces the assembly process cost.

[0128] Optionally, the lifting platform 21 of the transfer device 2 moves upward to fit the chassis against the vehicle body 5, including the following steps:

[0129] The lifting platform 21 of the transfer device 2 moves upward to position and engage the first pallet positioning part 31 of the pallet 3 with the lifting positioning part 12 of the vehicle body lifting device 1, thereby achieving coarse positioning between the chassis and the vehicle body 5.

[0130] For example, such as Figure 3 and Figure 4 As shown, the lifting platform 21 of the transfer device 2 moves upward, thereby lifting the chassis, so that the first pallet positioning part 31 and the lifting device positioning part 12 are positioned and engaged, realizing the coarse positioning of the vehicle body 5 and the chassis. During this stage, the base 303 can drive the bearing platform 304 to float relative to the lifting platform 21 in the first horizontal direction and the second horizontal direction.

[0131] Therefore, during the process of lifting the chassis using the lifting platform 21 of the transfer device 2, the first pallet positioning part 31 and the lifting tool positioning part 12 can be used for positioning cooperation to achieve coarse positioning between the body 5 and the chassis, which facilitates the positioning between the body 5 and the chassis, further simplifies the process of assembling the body 5 and the chassis, and reduces the process cost of assembling the body and the chassis.

[0132] Optionally, the lifting platform 21 of the transfer device 2 moves upward to fit the chassis against the vehicle body 5, including the following steps:

[0133] After the first pallet positioning part 31 of pallet 3 is positioned and engaged with the lifting device positioning part 12 of the vehicle body lifting device 1, the lifting platform 21 of the transfer device 2 continues to move upward to position the second pallet positioning part 32 of pallet 3 with the vehicle body 5, thereby achieving precise positioning between the chassis and the vehicle body 5.

[0134] For example, such as Figure 5 and Figure 6As shown, after the first pallet positioning part 31 of pallet 3 is positioned and engaged with the lifting device positioning part 12 of the vehicle body lifting device 1, the lifting platform 21 of the transfer device 2 continues to move upward and continue to lift the chassis, so that the second pallet positioning part 32 is positioned and engaged with the first positioning hole 51 of the vehicle body 5, thereby achieving precise positioning of the vehicle body 5 and the chassis. During this stage, the bearing platform 304 can float relative to the base 303 in the first horizontal direction and the second horizontal direction, and the first pallet positioning part 31 will be compressed, so that the first pallet positioning part 31 and the lifting device positioning part 12 maintain a positioning engagement state.

[0135] Therefore, during the process of lifting the chassis using the lifting platform 21 of the transfer device 2, the second pallet positioning part 32 can be used to position and cooperate with the body 5 to achieve precise positioning between the body 5 and the chassis, further simplifying the process of assembling the body 5 and the chassis and reducing the process cost of assembling the body and the chassis.

[0136] Optionally, the lifting platform 21 of the transfer device 2 moves upward to fit the chassis against the vehicle body 5, including the following steps:

[0137] The second pallet positioning part 32 of the pallet 3 is positioned and engaged with the vehicle body 5. After the chassis contacts the vehicle body 5, the lifting platform 21 of the transfer device 2 continues to move upward to release the vehicle body lifting device 1 from the vehicle body 5, so that the vehicle body 5 floats with the chassis in the vertical direction.

[0138] For example, such as Figure 7 and Figure 8 As shown, after the second pallet positioning part 32 of the pallet 3 is positioned and engaged with the vehicle body 5, the lifting platform 21 of the transfer device 2 continues to move upward and continues to lift the chassis, pushing the second positioning hole 52 out from the second positioning section 112 of the vehicle body positioning part 11, and the second positioning hole 52 does not come out of the first positioning section 111 of the vehicle body positioning part 11. At this time, the vehicle body is in a floating state, and the vehicle body 5 can float with the chassis in the up and down direction.

[0139] Therefore, during the floating phase of the vehicle body, the posture of the vehicle body 5 follows the posture of the chassis, which can release the stress caused by the mismatch between the chassis and the vehicle body 5, and achieve a good fit.

[0140] Optionally, the method of assembling the vehicle body and chassis also includes the following steps: after the vehicle body 5 is attached to the pressing mechanism, the lifting platform 21 of the transfer device 2 stops and connects the vehicle body 5 to the chassis.

[0141] The vehicle body and chassis assembly device of this disclosure has the following advantages:

[0142] (1) High assembly precision: All components of the chassis can be positioned on the tray 3 as a whole, and then the tray 3 and the body 5 are positioned and matched to achieve high-precision assembly of the chassis and the body 5.

[0143] (2) Low cost: The chassis can be transferred and lifted directly by the transfer device 2, eliminating the need for a secondary lifting platform and saving costs.

[0144] (3) Stress relief: By making the body 5 float, the tensile stress of the parts positioning between the chassis and the body 5 during the assembly process is eliminated, and the assembly effect of the chassis and the body 5 is optimized.

[0145] Although embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the scope of protection of the present disclosure.

Claims

1. A vehicle body and chassis assembly device, characterized in that, include: A vehicle body lifting device, wherein the vehicle body lifting device is provided with a vehicle body positioning part for cooperating with vehicle body positioning; A transfer device, which is movably disposed below the vehicle body lifting device, includes a lifting platform; The tray is located on the upper side of the lifting platform and connected to the lifting platform. The tray is provided with a chassis positioning part for positioning and cooperating with the chassis. The tray includes: a base, a support platform, and a connecting assembly. The base is located on the upper side of the lifting platform and connected to the lifting platform. The support platform is located on the upper side of the base and is movably connected to the base in the horizontal direction. The connection component includes: A first movable component and a second movable component, wherein the first movable component is movably connected to the second movable component along the horizontal direction, the first movable component is movably connected to the base along the vertical direction, and the second movable component is connected to the support platform; An elastic reset member is disposed between the first movable member and the base, and the elastic reset member is used to provide an elastic force to the first movable member toward the second movable member; The connection component also includes: A first support and a second support, wherein the first support is connected to the base and the first support is provided with a first guide portion, the second support is connected to the support platform, and the second movable component is connected to the second support; The guide member has a second guide portion that is movably engaged with the first guide portion in the vertical direction. The first moving member is connected to the guide member, and the elastic reset member is disposed between the first moving member and the first support.

2. The vehicle body and chassis assembly device according to claim 1, characterized in that, The vehicle body lifting device is provided with a lifting device positioning part, and the pallet is provided with a first pallet positioning part for positioning and cooperating with the lifting device positioning part.

3. The vehicle body and chassis assembly device according to claim 2, characterized in that, The tray includes a base, which is movably connected to the lifting platform in a horizontal direction, and the first tray positioning part is disposed on the base.

4. The vehicle body and chassis assembly device according to claim 3, characterized in that, The tray includes: A first frame is disposed on the upper side of the lifting platform, and the first frame is movably connected to the lifting platform along a first horizontal direction. The second frame is located on the upper side of the first frame and is movably connected to the first frame along a second horizontal direction. The base is located on the upper side of the second frame and is connected to the second frame, wherein the second horizontal direction is perpendicular to the first horizontal direction.

5. The vehicle body and chassis assembly device according to claim 4, characterized in that, The lifting platform is provided with a first limiting part, and the first frame is provided with a second limiting part, the second limiting part being used to abut against the first limiting part along the first horizontal direction; and / or The first frame is provided with a third limiting part, and the second frame is provided with a fourth limiting part. The fourth limiting part is used to stop against the third limiting part along the two horizontal directions.

6. The vehicle body and chassis assembly device according to claim 2, characterized in that, The lifting device positioning part is a lifting device positioning hole, and the first pallet positioning part is a positioning pin; The first pallet positioning part is a telescopic positioning pin that can extend and retract in the vertical direction; and / or, the first pallet positioning part includes a first variable diameter section, the upper end of the first variable diameter section forms the upper end of the first pallet positioning part, and the diameter of the first variable diameter section gradually increases in the direction from top to bottom.

7. The vehicle body and chassis assembly device according to claim 1, characterized in that, The pallet is provided with a second pallet positioning part for cooperating with the vehicle body positioning.

8. The vehicle body and chassis assembly device according to claim 7, characterized in that, The second pallet positioning part is located on the support platform.

9. The vehicle body and chassis assembly device according to claim 1, characterized in that, One of the base and the support platform is provided with a fifth limiting part, and the other is provided with multiple sixth limiting parts, which are arranged circumferentially around the fifth limiting part.

10. The vehicle body and chassis assembly device according to claim 1, characterized in that, The number of the support platforms is multiple, and the tray also includes a connecting frame. The connecting frame is disposed between the base and the support platforms. The connecting frame is movably connected to the base along the horizontal direction, and the multiple support platforms are all connected to the connecting frame.

11. The vehicle body and chassis assembly device according to claim 10, characterized in that, The support platform is detachably connected to the connecting frame.

12. The vehicle body and chassis assembly device according to claim 7, characterized in that, The second pallet positioning part is a positioning pin. The second pallet positioning part includes a second variable diameter section. The upper end of the second variable diameter section forms the upper end of the second pallet positioning part. The diameter of the second variable diameter section gradually increases from top to bottom.

13. The vehicle body and chassis assembly device according to any one of claims 1-12, characterized in that, The vehicle positioning part is a vehicle positioning pin, which includes a first positioning segment and a second positioning segment. The first positioning segment is located on the upper side of the second positioning segment. The end of the first positioning segment away from the second positioning segment is the upper end of the vehicle positioning pin. The diameter of the first positioning segment gradually increases from top to bottom.

14. A method for assembling a vehicle body and chassis, characterized in that, Includes the following steps: Position the vehicle body on the vehicle body lifting device and position the chassis on the pallet connected to the lifting platform of the transfer device; The transfer device moves to below the vehicle body lifting device to move the chassis to below the vehicle body; The lifting platform of the transfer device moves upward to fit the chassis against the vehicle body; The lifting platform of the transfer device moves upward to fit the chassis against the vehicle body, including the following steps: The lifting platform of the transfer device moves upward to position and engage the first pallet positioning part of the pallet with the lifting positioning part of the vehicle body hanger, thereby achieving coarse positioning between the chassis and the vehicle body. The lifting platform of the transfer device moves upward to fit the chassis against the vehicle body, including the following steps: After the first pallet positioning part of the pallet is positioned and engaged with the lifting device positioning part of the vehicle body hanger, the lifting platform of the transfer device continues to move upward to engage the second pallet positioning part of the pallet with the vehicle body positioning part, thereby achieving precise positioning between the chassis and the vehicle body. The lifting platform of the transfer device moves upward to fit the chassis against the vehicle body, including the following steps: The second pallet positioning part of the pallet cooperates with the vehicle body positioning part, and after the chassis contacts the vehicle body, the lifting platform of the transfer device continues to move upward to release the vehicle body lifting device from the vehicle body, so that the vehicle body floats with the chassis in the vertical direction.

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