Switching device and its spreader

Abstract

The application relates to the technical field of vehicle manufacturing, in particular to a switching device and a lifting device thereof. The switching device comprises a lifting arm adjusting device and a support adjusting device. The lifting arm adjusting device is located on the side of the lifting device in the moving direction and is used for adjusting the front and back positions of the lifting arm. The support adjusting device comprises a base support and two position adjusting mechanisms. The base support is located below the lifting device, and the position adjusting mechanisms are arranged on the base support. The lifting arm adjusting device can adjust the front and back positions of the lifting arm to adapt to different frame lengths. The two position adjusting mechanisms in the support adjusting device can respectively adjust the left and right positions of the support assembly. After the position of the lifting arm is adjusted, at least one position adjusting mechanism can adjust the interval along the moving direction of the lifting device, so that different frame lengths are adapted, and a basis for adjusting the left and right positions of the support assembly is provided. The scheme can realize collinear production of multiple vehicle models, and reduce the development, manufacturing and replacement costs of the lifting device.

Description

Technical Field

[0001] This application relates to the field of vehicle manufacturing technology, and in particular to a switching device and its lifting device. Background Technology

[0002] In the automotive manufacturing process, vehicle transfer and assembly rely on automotive production lifting equipment. The structural differences between different car models necessitate variations in the support positions of these lifting equipment. To enable multi-model co-production and reduce overall production costs, the lifting equipment must possess support position switching capabilities to adapt to the positioning requirements of different car models. The accuracy of its support position directly impacts the safety of the production process and the ease of assembly. Therefore, developing a support switching device has become a crucial requirement in the automotive manufacturing industry.

[0003] In the existing technology, in order to meet the production needs of multiple vehicle models, automobile production lifting fixtures have begun to adopt various support switching designs. Through manual adjustment or simple mechanical drive, the adjustment of support position and the unlocking and locking functions of the boom and support have been initially realized, providing a certain technical foundation for the compatible production of multiple vehicle models.

[0004] However, existing support switching technologies still have shortcomings. They have a low degree of automation and rely heavily on manual intervention to adjust and match the support positions, which is inefficient and prone to affecting positioning accuracy due to human error, thus threatening production safety. Utility Model Content

[0005] This application addresses, to at least some extent, one of the technical problems in the related art.

[0006] Therefore, this application aims to provide a switching device and its lifting device.

[0007] To achieve the above objectives, in a first aspect, this application provides a switching device, comprising: A boom adjustment device is located on the side of the spreading device in the direction of movement. The boom adjustment device is used to adjust the front and rear position of the boom in the direction of movement of the spreading device to adapt to the length of the vehicle frame. Support adjustment device, the support adjustment device comprising: A base bracket, located below the lifting device; Two position adjustment mechanisms are provided, each mounted on a base bracket. These mechanisms are used to adjust the position of the support assembly of the lifting device to fit the width of the vehicle frame. The support assembly is located at one end of the boom. At least one of the position adjustment mechanisms can adjust its position along the direction of movement of the lifting device, with the distance between the two position adjustment mechanisms after movement corresponding to the position of the boom after movement.

[0008] In this technical solution, the boom adjustment device and the support adjustment device can adapt to different vehicle structures. The boom adjustment device can adjust the front and rear position of the boom to accommodate different frame lengths. In the support adjustment device, two position adjustment mechanisms can adjust the left and right positions of the support components respectively. When the boom position is adjusted, the position of the support components on the boom will also change. At least one position adjustment mechanism can adjust the spacing along the direction of the spreader's movement to further adapt to different frame lengths and correspond to the support components, providing a basis for the position adjustment mechanisms to adjust the left and right positions of the support components. This solution eliminates the need to design a dedicated spreader for a single vehicle model, enabling multi-model co-production and reducing the costs of spreader R&D, manufacturing, and replacement.

[0009] In some embodiments of this application, the position adjustment mechanism includes: A first support frame is slidably or fixedly mounted on the base bracket; The second support frame is fixedly mounted on the first support frame; Support unlocking components, two of which are respectively disposed at both ends of the second support frame perpendicular to the direction of movement of the lifting device; A support movable component is provided, which is disposed on the first support frame and is used to adjust the position of the support plate in the width direction of the frame.

[0010] In the technical solution, the first support frame is directly connected to the base bracket, providing an installation carrier and positioning reference for the entire adjustment mechanism. The sliding first support frame can be adapted to the spacing requirements of different vehicle models, while the fixed first support frame provides a positioning reference for the sliding first support frame. The second support frame is fixed on the first support frame, raising the installation height of the support unlocking component so that it accurately corresponds to the unlocking part of the lifting support component.

[0011] Two support unlocking components are positioned at both ends of the second support frame perpendicular to the direction of spreader movement, forming a symmetrical unlocking structure. This allows for simultaneous application of unlocking forces to the support components on both booms, preventing tilting and jamming caused by unilateral unlocking, and ensuring a smooth unlocking process. The unlocking components and support movement components are located on different support frames, avoiding interference between them during adjustment and preventing structural damage caused by forced movement of the support components before unlocking, thus improving operational safety.

[0012] In some embodiments of this application, a second motor is provided on the first support frame, the second motor is used to provide moving power to the position adjustment mechanism, and a second gear is provided on the rotating shaft of the second motor; The base support is provided with: The second guide rail connects the first support frame to the base bracket. The second rack is connected to the second gear.

[0013] In this technical solution, a gear and rack transmission system driven by a second motor is used to adjust the spacing of the position adjustment mechanism. The second gear meshes with the second rack on the base bracket to form a drive unit. Combined with the linear constraint of the second guide rail, this allows the first support frame to slide smoothly along the direction of the lifting device, meeting the support spacing requirements of different wheelbase vehicle models. Compared to cylinder drive, the motor drive method offers higher position control precision, ensuring accurate positioning of the two position adjustment mechanisms. The combination of fixed and sliding configurations for the first support frame allows the sliding side to adjust the spacing according to vehicle model parameters, while the fixed side provides a reference positioning, forming a modular layout that facilitates future maintenance and functional expansion.

[0014] In some embodiments of this application, the support unlocking component includes: The first cylinder is vertically arranged so that the extension rod of the first cylinder can extend and retract downwards; A pressure rod is mounted on the telescopic rod of the first cylinder. The pressure rod is used to push the second limiting pin of the support assembly so that the second limiting pin is disengaged from the locking position.

[0015] In this technical solution, the unlocking control of the second limit pin is achieved by driving a lowering rod with a first cylinder. The vertically positioned cylinder ensures that the unlocking force acts directly on the limit pin, guaranteeing the stability of the unlocking action and improving the safety and service life of the support component's position switching. The vertically positioned cylinder and direct-connected lowering rod have a compact layout, occupying little space and matching the installation position of the second support frame. This avoids movement interference with surrounding components such as the support moving components and adapts to the spatial layout requirements of the overall mechanism. The streamlined structure facilitates later inspection and maintenance, improving maintenance efficiency. The driving method of the first cylinder is easy to integrate with the production line's automated control system, and can automatically complete the unlocking action according to production instructions without manual intervention.

[0016] In some embodiments of this application, the supporting mobility component includes: A first motor is mounted on the first support frame, and a first gear is mounted on the shaft of the first motor. A movable plate is mounted on a first support frame via a first guide rail, and a first rack is provided on the movable plate; the first gear is connected to the first rack. The second cylinder is fixedly mounted on the movable plate; A connecting pin, which is fixedly mounted on the telescopic rod of the second cylinder; When the support component needs to be adjusted, the connecting pin engages with the connecting part on the support component under the drive of the second cylinder, thereby adjusting the position of the support component.

[0017] In this technical solution, a motor and rack and pinion transmission structure is used to adjust the position of the support component. The first motor meshes with the first rack on the moving plate through the first gear, forming a closed-loop transmission system with the first guide rail. This ensures the displacement accuracy of the moving plate in the left and right directions, meeting the positioning tolerance requirements of the support components for different vehicle models. The connecting pin design driven by the second cylinder enables flexible docking between the adjustment mechanism and the support component. During docking, the cylinder's buffering effect compensates for installation errors, avoiding component damage caused by rigid collisions. Once the support component is adjusted to the correct position, the connecting pin can quickly disengage from the connection part, preventing interference with the normal operation of the lifting device. The overall structure offers high adjustment accuracy and operational safety, effectively improving the efficiency of support position adjustment when switching between multiple vehicle models.

[0018] In some embodiments of this application, a support positioning component is further included, wherein the support positioning component is disposed on both sides of the first support frame and is used to position the lifting device; the support positioning component includes: A positioning cylinder, wherein the positioning cylinder is vertically arranged; A positioning pin is fixedly mounted on the telescopic rod of the positioning cylinder.

[0019] In this technical solution, by setting support positioning components on both sides of the first support frame to form a symmetrical positioning structure, synchronous positioning can be achieved when the lifting device enters the adjustment position, avoiding the device tilting caused by unilateral positioning. A positioning cylinder drives the positioning pin to rise and fall vertically, ensuring that the positioning action is perpendicular to the lifting device's movement path and that the positioning pin is embedded in the positioning hole of the lifting device. This support positioning component improves the efficiency of lifting device changeover. The conical surface fit design between the positioning pin and the positioning hole has an automatic centering function, which can compensate for lifting device parking errors and ensure the relative positional accuracy between the position adjustment mechanism and the lifting device support components, providing a reliable benchmark for subsequent support position adjustments.

[0020] In some embodiments of this application, the boom adjustment device includes: Base; Adjustment frame, wherein the adjustment frame is provided with: The unlocking roller is located at one end of the adjustment frame and extends through a connecting rod in a direction perpendicular to the movement direction of the lifting device. The unlocking roller is used to push the first limit pin to rotate and unlock the boom locking assembly. A limiting rod is provided on one side of the adjusting frame, and the limiting rod extends in a direction perpendicular to the movement of the lifting device; the limiting rod holds the boom of the lifting device to push the boom to adjust its position in the direction of the movement of the lifting device; An adjustment assembly is provided, which connects the base and the adjustment frame, and is used to adjust the position of the adjustment frame.

[0021] In this technical solution, the integrated design of the unlocking roller and the limiting rod enables unified operation of boom locking / unlocking and position adjustment. The unlocking roller extends vertically via a connecting rod, allowing it to contact and push the first limiting pin in advance during the movement of the spreader, thus unlocking the boom locking assembly. The limiting rod holds the boom of the spreader. The two-dimensional freedom of movement provided by the adjustment assembly can compensate for spreader parking errors and adapt to the spatial position differences of booms in different vehicle models. When the adjustment assembly moves the adjustment frame towards the boom, the unlocking roller pushes the first limiting pin to rotate, unlocking the boom locking assembly; simultaneously, the limiting rod holds the boom of the spreader. Then, when the adjustment assembly moves the adjustment frame in the forward / backward direction, that is, when it moves in the direction of spreader movement, the position of the boom in the forward / backward direction can be adjusted.

[0022] In some embodiments of this application, the adjustment component includes: Third guide track; The third support frame is slidably connected to the machine base via a third guide rail. The third cylinder is mounted on the base, and the telescopic rod of the third cylinder is connected to the third support frame for pushing the third support frame to move along the third guide rail. The fourth cylinder is mounted on the third support frame, and the telescopic rod of the fourth cylinder is connected to the adjusting frame; A fourth guide rail is provided, which is perpendicular to the direction of the third guide rail. The adjustment frame and the third support frame are slidably connected through the fourth guide rail. The fourth cylinder pushes the adjustment frame to move along the fourth guide rail.

[0023] In the technical solution, a cross slide structure driven by dual cylinders is used to achieve movement of the adjustment frame in two directions. The rigid connection of the cylinders and the linear constraint of the guide rail ensure the accuracy of the adjustment frame's movement in both directions. The fourth cylinder pushes the adjustment frame to unlock and clamp the boom, and the third cylinder pushes the unlocked adjustment frame to move its position in the front-back direction.

[0024] Secondly, this application provides a lifting device, including: Hanger; Front boom, which is fixedly mounted on the hanger; The rear boom is mounted on the frame and can slide along the front-rear direction of the frame; A support assembly is disposed at one end of the front boom and the rear boom; and the switching device as described in the first aspect; The boom adjustment device is located on one side of the front boom and is used to adjust the front and rear positions of the front boom on the frame. The support adjustment device is disposed on one side of the support assembly, and the support adjustment device is used to adjust the left and right positions of the support assembly.

[0025] In this technical solution, a combination of a fixed front boom and a sliding rear boom, along with a switching device, enables modular adjustment of the spreader. The front boom provides a reference, while the rear boom, through an adjustment device, allows for fore-and-aft position adjustment to meet the coverage requirements of chassis of different lengths. The working mechanism of the support components and the support adjustment device allows for left-right position switching, forming a three-dimensional adjustment space in conjunction with the fore-and-aft adjustment of the boom, achieving compatible support for multiple vehicle chassis. The integrated design of the switching device and the spreader reduces connecting parts compared to traditional split structures, shortens changeover adjustment time, and improves the flexibility of the production line.

[0026] In some embodiments of this application, the support component includes: A sliding seat, which is vertically fixedly mounted on the front boom and the rear boom; A positioning plate is fixedly disposed on one side of the sliding seat, and the positioning plate is provided with a plurality of limiting grooves; A support plate, which is slidably disposed on the sliding seat, is used to support the vehicle frame; The second limiting pin is rotatably mounted on the support plate; in: When the second limiting pin engages with the limiting groove, the position of the support plate is locked. When the second limiting pin is lifted by the position adjustment mechanism, the position adjustment mechanism can adjust the position of the support plate to match the width of the frame.

[0027] In the technical solution, A support adjustment framework is constructed through a rigid connection between the sliding seat and the positioning plate. The positioning plate features spaced limiting grooves forming a multi-position locking structure, which, in conjunction with a rotatable second limiting pin, enables rapid locking and unlocking of the support plate. The sliding engagement between the support plate and the sliding seat allows for adjustment to accommodate different wheelbase models. When the position adjustment mechanism raises the second limiting pin and disengages it from the groove, the support plate adjusts its position under the drive of the support movement component. Once in position, the limiting pin locks, creating a mechanically rigid positioning. The modular component design reduces maintenance time for individual support units and lowers the risk of production line downtime.

[0028] As can be seen from the above technical solutions, additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the switching device of this application; Figure 2 This is a schematic diagram of the overall structure of the boom adjustment device of this application; Figure 3 This is a schematic diagram of the overall structure of the support and adjustment device of this application; Figure 4 This is another schematic diagram of the overall structure of the support and adjustment device of this application from another angle; Figure 5 This is a partial enlarged view of the support moving component of the support adjustment device of this application; Figure 6 This is a partially enlarged view from another angle of the support movement component of the support adjustment device of this application; Figure 7 It is based on the structural drawing of the lifting device in this application; Figure 8 yes Figure 7 Enlarged view of section A in the middle; Figure 9 yes Figure 7 Enlarged view of section B; Figure 10 This is an overall structural diagram of the switching device and its lifting device in this application.

[0030] In the above figures: 1. Boom adjustment device; 11. Base; 12. Adjustment frame; 121. Unlocking roller; 122. Connecting rod; 123. Limiting rod; 13. Adjustment component; 131. Third guide rail; 132. Third support frame; 133. Third cylinder; 134. Fourth cylinder; 135. Fourth guide rail; 2. Support and adjustment device; 21. Base bracket; 211. Second guide rail; 212. Second rack; 22. Position adjustment mechanism; 221. First support frame; 222. Second support frame; 223. Support unlocking component; 2231. First cylinder; 2232. Downward pressure rod; 224. Supporting moving component; 2241. First motor; 2242. First gear; 2243. Moving plate; 2244. First guide rail; 2245. First rack; 2246. Second cylinder; 2247. Connecting pin; 225. Support and positioning assembly; 2251. Positioning cylinder; 2252. Positioning pin; 226. Second motor; 2261. Second gear; 3. Lifting gear; 31. Lifting frame; 32. Front boom; 33. Rear boom; 34. Support assembly; 341. Sliding seat; 342. Positioning plate; 343. Limiting groove; 344. Support plate; 345. Second limiting pin; 35. Boom locking assembly; 351. First limit pin. Detailed Implementation

[0031] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0032] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments. It should be noted that in the production process of automobile factories, vehicle transfer and assembly rely on automobile production lifting equipment. The structural differences between different car models necessitate variations in the support positions of these lifting equipment. To achieve co-production of multiple car models and reduce overall production costs, the lifting equipment must possess a support position switching function to adapt to the positioning requirements of different car models. The accuracy of its support position directly affects the safety of the production process and the convenience of assembly. Therefore, developing a support switching device has become a crucial requirement in the automotive manufacturing industry.

[0033] In the existing technology, in order to meet the production needs of multiple vehicle models, automobile production lifting fixtures have begun to adopt various support switching designs. Through manual adjustment or simple mechanical drive, the adjustment of support position and the unlocking and locking functions of the boom and support have been initially realized, providing a certain technical foundation for the compatible production of multiple vehicle models.

[0034] However, existing support switching technologies still have shortcomings. They have a low degree of automation and rely heavily on manual intervention to adjust and match the support positions, which is inefficient and prone to affecting positioning accuracy due to human error, thus threatening production safety.

[0035] Based on this, this application proposes a support switching device and a lifting tool. The boom adjustment device is located to the side of the lifting tool's movement direction to adjust the front and rear positions of the boom. The base bracket of the support adjustment device carries two position adjustment mechanisms. The position adjustment mechanisms are slidably or fixedly connected to the base bracket through a first support frame. The second support frame carries a support unlocking component. A first cylinder drives a downward pressing rod to push a second limit pin out of the locked position. The support moving component drives a moving plate through a first motor driving a gear and rack. A second cylinder drives a connecting pin to dock with the support component and drive it to adjust left and right. Moreover, at least one position adjustment mechanism can be adjusted along the lifting tool's movement direction, realizing automated switching for multiple vehicle models. The operation is safe and stable, solving the problems of traditional lifting tools being difficult to be compatible with different vehicle structures, insufficient support positioning accuracy, low efficiency due to excessive manual intervention, and easy structural interference or damage during the adjustment process.

[0036] In the following, embodiments of this application will be described in detail with reference to the accompanying drawings.

[0037] As attached Figures 1 to 10 As shown, in a first aspect, this application provides a switching device, including a boom adjustment device 1 and a support adjustment device 2. The boom adjustment device 1 is located to the side of the lifting device 3 in the direction of movement, and the boom adjustment device 1 is used to adjust the front and rear position of the boom in the direction of movement of the lifting device; through the action of the boom adjustment device 1 and the support adjustment device 2, it can adapt to different vehicle vehicle structures, and the boom adjustment device 1 can adjust the front and rear position of the boom to adapt to different vehicle frame lengths.

[0038] It should be noted that the direction of the spreader's movement is the front-to-back position, and the two sides perpendicular to the direction of the spreader's movement are the left-to-right positions.

[0039] In some embodiments, the support adjustment device 2 includes a base bracket 21 and two position adjustment mechanisms 22; the base bracket 21 is located below the lifting device 3; the position adjustment mechanisms 22 are disposed on the base bracket 21, one of the position adjustment mechanisms 22 can adjust its position along the moving direction of the lifting device 3, and the other position adjustment mechanism 22 is fixed on the base bracket 21.

[0040] It should be noted that the support assembly 34 is located at one end of the boom. After the boom is moved by the support adjustment device 2, the distance between the front and rear booms changes. Therefore, the two position adjustment mechanisms 22 need to adjust their positions themselves to move to one side of the boom and adjust the left and right positions of the support plate 344 on the support assembly 34 to adapt to the width of the vehicle frame.

[0041] In the above solution, the two position adjustment mechanisms 22 can respectively adjust the left and right positions of the support plate 344 of the support assembly 34 to adapt to the width of the vehicle frame. When the position of the boom is adjusted, the position of the support assembly 34 on the boom will also change. At least one position adjustment mechanism 22 can adjust the spacing along the moving direction of the hanger 3 to further adapt to different vehicle frame lengths to correspond to the support assembly 34, providing a basis for the position adjustment mechanism 22 to adjust the left and right positions of the support assembly 34. This solution eliminates the need to design a dedicated hanger 3 for a single vehicle model, enabling multi-model co-production and reducing the cost of developing, manufacturing, and replacing the hanger 3.

[0042] In some embodiments, the position adjustment mechanism 22 includes a first support frame 221 and a support movement component 224. The first support frame 221 is slidably or fixedly mounted on the base bracket 21; it provides an installation carrier and positioning reference for the entire adjustment mechanism. The sliding first support frame 221 is configured to adapt to the spacing requirements of different vehicle models, while the fixed first support frame 221 provides a positioning reference for the sliding first support frame 221.

[0043] In some embodiments, the position adjustment mechanism 22 includes a second support frame 222 and a support moving component 224. The second support frame 222 is fixedly mounted on the first support frame 221. Two support unlocking components 223 are respectively disposed at both ends of the second support frame 222 perpendicular to the moving direction of the lifting device 3. The support moving component 224 is disposed on the first support frame 221 and is used to adjust the left and right positions of the support. The second support frame 222 is fixed on the first support frame 221, raising the installation height of the support unlocking component 223 so that it accurately corresponds to the unlocking part of the support component 34 of the lifting device 3.

[0044] In some embodiments, the position adjustment mechanism 22 includes support unlocking components 223. Two support unlocking components 223 are disposed at both ends of the second support frame 222 perpendicular to the moving direction of the lifting device 3, forming a symmetrical unlocking structure. Unlocking forces can be applied simultaneously to the support components 34 on both booms, avoiding tilting and jamming of the support components 34 caused by unilateral unlocking, ensuring a smooth unlocking process. The unlocking components and support moving components 224 are placed on different support frames, avoiding movement interference between the two during adjustment, preventing structural damage caused by forced movement of the support components 34 when they are not unlocked, and improving operational safety.

[0045] In some embodiments, the support unlocking assembly 223 includes a first cylinder 2231 and a pressing rod 2232. The first cylinder 2231 is vertically arranged so that the telescopic rod of the first cylinder 2231 extends and retracts downward; the pressing rod 2232 is disposed on the telescopic rod of the first cylinder 2231, and the pressing rod 2232 is used to push the second limiting pin 345 of the support assembly 34 so that the second limiting pin 345 disengages from the locked position.

[0046] In the above scheme, the first cylinder 2231 drives the lowering rod 2232 to unlock the second limit pin 345. The vertically arranged cylinder layout ensures that the unlocking force acts on the limit pin, guaranteeing the stability of the unlocking action and improving the safety and service life of the support component 34 during position switching. The vertically arranged cylinder and the direct-connected lowering rod 2232 have a compact layout, occupying little space. They can be matched with the installation position of the second support frame 222, avoiding movement interference with surrounding components such as the support moving component 224, and adapting to the spatial layout requirements of the overall mechanism. The simplified structure facilitates later inspection and maintenance, improving maintenance efficiency. The driving method of the first cylinder 2231 is easy to integrate with the production line automation control system, and can automatically complete the unlocking action according to production instructions without manual intervention.

[0047] In some embodiments, the supporting movable component 224 includes a first motor 2241 and a movable plate 2243. The first motor 2241 is mounted on the first support frame 221, and a first gear 2242 is mounted on the shaft of the first motor 2241. The movable plate 2243 is mounted on the first support frame 221 via a first guide rail 2244, and a first rack 2245 is mounted on the movable plate 2243. The first gear 2242 and the first rack 2245 are connected in a meshing manner. The position adjustment of the supporting component 34 is achieved by using a motor and gear and rack transmission structure. The first motor 2241 meshes with the first rack 2245 on the movable plate 2243 via the first gear 2242, forming a closed-loop transmission system with the first guide rail 2244 to ensure the displacement accuracy of the movable plate 2243 in the left and right directions, meeting the positioning tolerance requirements of the supporting component 34 for different vehicle models.

[0048] In some embodiments, the supporting movable component 224 includes a second cylinder 2246 and a connecting pin 2247. The second cylinder 2246 is fixedly mounted on the movable plate 2243; the connecting pin 2247 is fixedly mounted on the telescopic rod of the second cylinder 2246; the connecting pin 2247 driven by the second cylinder 2246 is designed to achieve flexible docking between the adjustment mechanism and the supporting component 34. During the docking process, the cylinder buffering effect can compensate for installation errors and avoid component damage caused by rigid collisions; when the supporting component 34 is adjusted to the correct position, the connecting pin 2247 can quickly disengage from the connecting part to prevent interference with the normal operation of the lifting device 3. The overall structure has high adjustment accuracy and operational safety, effectively improving the efficiency of support position adjustment when switching between multiple vehicle models.

[0049] With the above solution, when the support component 34 needs to be adjusted, the connecting pin 2247 engages with the connecting part on the support component 34 under the drive of the second cylinder 2246, thereby driving the support component 34 to adjust its position left and right.

[0050] In some embodiments, the position adjustment mechanism 22 further includes a support positioning component 225, which is disposed on both sides of the first support frame 221 and is used to position the lifting device 3. By providing the support positioning component 225 on both sides of the first support frame 221, a symmetrical positioning structure is formed, which can achieve synchronous positioning when the lifting device 3 enters the adjustment position, avoiding the tilt of the lifting device 3 caused by unilateral positioning.

[0051] In some embodiments, the support positioning component 225 includes a positioning cylinder 2251 and a positioning pin 2252. The positioning cylinder 2251 is vertically arranged; the positioning pin 2252 is fixedly arranged on the telescopic rod of the positioning cylinder 2251. The positioning cylinder 2251 drives the positioning pin 2252 to rise and fall vertically, so that the positioning action is perpendicular to the movement path of the lifting device 3, ensuring that the positioning pin 2252 is embedded in the positioning hole of the lifting device 3. This support positioning component 225 improves the changeover efficiency of the lifting device 3. The conical surface fit design of the positioning pin 2252 and the positioning hole has an automatic centering function, which can compensate for the parking error of the lifting device 3, ensure the relative position accuracy between the position adjustment mechanism 22 and the support component 34 of the lifting device 3, and provide a reliable reference for subsequent support position adjustment.

[0052] In some embodiments, a second motor 226 is provided on the first support frame 221. The second motor 226 is used to provide moving power to the position adjustment mechanism 22. A second gear 2261 is provided on the rotating shaft of the second motor 226. The gear and rack transmission system driven by the second motor 226 realizes the spacing adjustment of the position adjustment mechanism 22.

[0053] In some embodiments, the base bracket 21 is provided with a second guide rail 211 and a second rack 212. The first support frame 221 is connected to the base bracket 21 via the second guide rail 211; the second rack 212 is engaged with the second gear 2261. The second gear 2261 meshes with the second rack 212 on the base bracket 21 to form a drive unit. Combined with the linear constraint of the second guide rail 211, this allows the first support frame 221 to slide smoothly along the moving direction of the hanger 3, meeting the support spacing requirements of different wheelbase vehicle models. The motor drive method offers higher position control accuracy compared to cylinder drive, ensuring the relative position accuracy of the two position adjustment mechanisms 22. The configuration of the first support frame 221, combining fixed and sliding mechanisms, allows the sliding side to adjust the spacing according to vehicle model parameters, while the fixed side provides a reference positioning, forming a modular layout that facilitates later maintenance and functional expansion.

[0054] In some embodiments, the boom adjustment device 1 includes a base 11, an adjustment frame 12, and an adjustment assembly 13. The adjustment assembly 13 connects the base 11 and the adjustment frame 12, and is used to enable the adjustment frame 12 to move in the left-right and front-back directions. The two-dimensional freedom of movement provided by the adjustment assembly 13 can compensate for the parking error of the spreader 3 and adapt to the spatial position differences of the booms of different vehicle models. When the adjustment assembly 13 moves the adjustment frame 12 toward the boom, the unlocking roller 121 pushes the first limit pin 351 to rotate, unlocking the boom locking assembly 35. At the same time, the limit rod 123 holds the boom of the spreader 3. Then, when the adjustment assembly 13 moves the adjustment frame 12 in the front-back direction, that is, when it moves in the direction of movement of the spreader 3, the position of the boom in the front-back direction can be adjusted.

[0055] In some embodiments, the adjustment frame 12 is provided with an unlocking roller 121 and a limiting rod 123: the unlocking roller 121 is located at one end of the adjustment frame 12, and extends through a connecting rod 122 in a direction perpendicular to the movement direction of the lifting device 3; the unlocking roller 121 is used to push the first limiting pin 351 to rotate and unlock the boom locking assembly 35; the limiting rod 123 is located on one side of the adjustment frame 12, and extends in a direction perpendicular to the movement direction of the lifting device 3; the limiting rod 123 holds the boom of the lifting device 3 to push the boom to move in the front-back direction. Through the integrated design of the unlocking roller 121 and the limiting rod 123, integrated operation of boom locking / unlocking and position adjustment is achieved. The unlocking roller 121 extends vertically through the connecting rod 122, and can contact and push the first limiting pin 351 in advance during the movement of the lifting device 3 to unlock the boom locking assembly 35; the limiting rod 123 holds the boom of the lifting device 3.

[0056] In some embodiments, the adjustment assembly 13 includes a third guide rail 131, a third support frame 132, a third cylinder 133, a fourth cylinder 134, and a fourth guide rail 135. The third support frame 132 is slidably connected to the base 11 via the third guide rail 131; the third cylinder 133 is mounted on the base 11, and its telescopic rod is connected to the third support frame 132 to push the third support frame 132 to move along the third guide rail 131; the fourth cylinder 134 is mounted on the third support frame 132, and its telescopic rod is connected to the adjustment frame 12; the fourth guide rail 135 is perpendicular to the direction of the third guide rail 131, and the adjustment frame 12 is slidably connected to the third support frame 132 via the fourth guide rail 135, with the fourth cylinder 134 pushing the adjustment frame 12 to move along the fourth guide rail 135.

[0057] The above scheme employs a dual-cylinder driven cross slide structure to achieve movement of the adjustment frame 12 in both directions. The rigid connection of the cylinders and the linear constraint of the guide rail ensure the accuracy of the adjustment frame 12's movement in both directions. The fourth cylinder 134 pushes the adjustment frame 12 to unlock and clamp the boom, while the third cylinder 133 pushes the unlocked adjustment frame 12 to move its position in the forward and backward directions.

[0058] A second aspect of this application provides a lifting device 3, including a lifting frame 31, a front boom 32, a rear boom 33, a support assembly 34, and a switching device as described in the first aspect. The front boom 32 is fixedly mounted on the lifting frame 31; the rear boom 33 is mounted on the lifting frame 31 and is slidable along the front-rear direction of the lifting frame 31; the support assembly 34 is disposed at one end of the front boom 32 and the rear boom 33.

[0059] In the above scheme, the boom adjustment device 1 is located on one side of the front boom 32, and is used to adjust the front boom 32's front-to-back position on the hanger 31; the support adjustment device 2 is located on one side of the support assembly 34, and is used to adjust the left-to-right position of the support assembly 34. Through the combined design of the fixed front boom 32 and the sliding rear boom 33, and in conjunction with the switching device, modular adjustment of the hanger 3 is achieved. The front boom 32 provides a reference, and the rear boom 33 is adjusted in front-to-back position via the boom adjustment device 1, meeting the coverage requirements of chassis of different lengths. The working mechanism of the support assembly 34 and the support adjustment device 2 allows for left-to-right position switching, and in conjunction with the front-to-back adjustment of the boom, achieves compatible support for multiple vehicle chassis. The integrated design of the switching device and the hanger 3 reduces connecting parts compared to the traditional split structure, shortens changeover adjustment time, and improves the flexibility of the production line.

[0060] In some embodiments, the support assembly 34 includes a sliding seat 341, a positioning plate 342, a support plate 344, and a second limiting pin 345. The sliding seat 341 is vertically fixedly disposed on the front boom 32 and the rear boom 33; the positioning plate 342 is fixedly disposed on one side of the sliding seat 341, and the positioning plate 342 is provided with a plurality of limiting grooves 343; the support plate 344 is slidably disposed on the sliding seat 341, and the support plate 344 is used to support the frame. The second limiting pin 345 is rotatably disposed on the support plate 344.

[0061] In the above scheme, when the second limiting pin 345 is engaged in the limiting groove 343, the position of the support plate 344 is locked; when the second limiting pin 345 is lifted by the position adjustment mechanism 22, the position adjustment mechanism 22 can adjust the left and right positions of the support plate 344 to adapt to the width of the frame.

[0062] In some embodiments, a support adjustment base frame is constructed through a rigid connection between the sliding seat 341 and the positioning plate 342. The spaced-apart limiting grooves 343 on the positioning plate 342 form a multi-position locking structure, which, in conjunction with the rotatable second limiting pin 345, enables the support plate 344 to be quickly locked and unlocked. The sliding engagement between the support plate 344 and the sliding seat 341 allows for adjustment of the travel to accommodate different wheelbase models. When the position adjustment mechanism 22 lifts the second limiting pin 345 out of the groove, the support plate 344 can be position-adjusted under the drive of the support moving component 224. Once in position, the limiting pin locks, forming a mechanically rigid positioning. The modular component design shortens the maintenance time of a single support unit and reduces the risk of production line downtime.

[0063] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A switching device, characterized in that, include: A boom adjustment device (1) is located on the side of the lifting device (3) in the direction of movement. The boom adjustment device (1) is used to adjust the front and rear position of the boom in the direction of movement of the lifting device to adapt to the length of the frame. A support adjustment device (2), the support adjustment device (2) comprising: A base bracket (21) is located below the lifting device (3); Two position adjustment mechanisms (22) are provided on the base bracket (21). The position adjustment mechanisms (22) are used to adjust the position of the support component (34) of the lifting device (3) to adapt to the width of the vehicle frame. The support component (34) is provided at one end of the boom. At least one of the position adjustment mechanisms (22) can adjust its position along the moving direction of the lifting device (3), with the distance between the two position adjustment mechanisms (22) after moving corresponding to the position of the boom after moving.

2. The switching device according to claim 1, characterized in that, The position adjustment mechanism (22) includes: The first support frame (221) is slidably or fixedly mounted on the base bracket (21); The second support frame (222) is fixedly mounted on the first support frame (221); Support unlocking components (223), two of the support unlocking components (223) are respectively disposed at both ends of the second support frame (222) perpendicular to the moving direction of the lifting device (3); A support moving component (224) is disposed on the first support frame (221) and is used to adjust the position of the support plate (344) in the width direction of the frame.

3. The switching device according to claim 2, characterized in that, The first support frame (221) is provided with a second motor (226), which is used to provide moving power to the position adjustment mechanism (22), and a second gear (2261) is provided on the shaft of the second motor (226); The base support (21) is provided with: The second guide rail (211) is used to connect the first support frame (221) to the base bracket (21). The second rack (212) is connected to the second gear (2261).

4. The switching device according to claim 2, characterized in that, The support unlocking component (223) includes: The first cylinder (2231) is vertically arranged so that the telescopic rod of the first cylinder (2231) can extend and retract downward; A pressure rod (2232) is disposed on the telescopic rod of the first cylinder (2231). The pressure rod (2232) is used to push the second limiting pin (345) of the support assembly (34) so ​​that the second limiting pin (345) is disengaged from the locking position.

5. The switching device according to claim 2, characterized in that, The supporting moving component (224) includes: A first motor (2241) is mounted on the first support frame (221), and a first gear (2242) is mounted on the shaft of the first motor (2241). A movable plate (2243) is mounted on the first support frame (221) via a first guide rail (2244). A first rack (2245) is provided on the movable plate (2243). A first gear (2242) is engaged with the first rack (2245). The second cylinder (2246) is fixedly mounted on the movable plate (2243); A connecting pin (2247) is fixedly mounted on the telescopic rod of the second cylinder (2246); When the support component (34) needs to be adjusted, the connecting pin (2247) is driven by the second cylinder (2246) to engage with the connecting part on the support component (34), thereby driving the position of the support component (34) to be adjusted.

6. The switching device according to claim 2, characterized in that, It also includes a support positioning component (225), which is disposed on both sides of the first support frame (221) and is used to position the lifting device (3); The support positioning component (225) includes: A positioning cylinder (2251) is provided, wherein the positioning cylinder (2251) is vertically arranged; Positioning pin (2252) is fixedly mounted on the telescopic rod of the positioning cylinder (2251).

7. The switching device according to claim 1, characterized in that, The boom adjustment device (1) includes: Base (11); Adjustment frame (12), wherein the adjustment frame (12) is provided with: Unlocking roller (121) is located at one end of the adjusting frame (12). The unlocking roller (121) extends through the connecting rod (122) in a direction perpendicular to the movement of the lifting device (3). The unlocking roller (121) is used to push the first limiting pin (351) to rotate and unlock the boom locking assembly (35). A limiting rod (123) is provided on one side of the adjusting frame (12), and the limiting rod (123) extends in a direction perpendicular to the movement of the lifting device (3); the limiting rod (123) holds the boom of the lifting device (3) to push the boom to adjust its position in the direction of movement of the lifting device (3); An adjustment component (13) is provided, which connects the base (11) and the adjustment frame (12), and is used to adjust the position of the adjustment frame (12).

8. The switching device according to claim 7, characterized in that, The adjustment component (13) includes: Third guide rail (131); The third support frame (132) is slidably connected to the base (11) via a third guide rail (131); The third cylinder (133) is mounted on the base (11). The telescopic rod of the third cylinder (133) is connected to the third support frame (132) and is used to push the third support frame (132) to move along the third guide rail (131). The fourth cylinder (134) is mounted on the third support frame (132), and the telescopic rod of the fourth cylinder (134) is connected to the adjustment frame (12). The fourth guide rail (135) is perpendicular to the direction of the third guide rail (131). The adjustment frame (12) and the third support frame (132) are slidably connected through the fourth guide rail (135). The fourth cylinder (134) pushes the adjustment frame (12) to move along the fourth guide rail (135).

9. A lifting device, characterized in that, include: Hanger (31); Front boom (32), which is fixedly mounted on the hanger (31); The rear boom (33) is mounted on the hanger (31) and can slide along the hanger (31) in the front-rear direction; A support assembly (34) is disposed at one end of the front boom (32) and the rear boom (33); And the switching device as described in any one of claims 1 to 8; The boom adjustment device (1) is located on one side of the rear boom (33), and the boom adjustment device (1) is used to adjust the front and rear position of the rear boom (33) on the hanger (31); The support adjustment device (2) is disposed on one side of the support assembly (34), and the support adjustment device (2) is used to adjust the position of the support assembly (34).

10. The lifting device according to claim 9, characterized in that, The support component (34) includes: A sliding seat (341) is vertically fixed on the front boom (32) and the rear boom (33); Positioning plate (342), the positioning plate (342) is fixedly disposed on one side of the sliding seat (341), and the positioning plate (342) is provided with a plurality of limiting grooves (343); A support plate (344) is slidably disposed on the sliding seat (341) and the support plate (344) is used to support the vehicle frame; The second limiting pin (345) is rotatably mounted on the support plate (344); in: When the second limiting pin (345) is engaged in the limiting groove (343), the position of the support plate (344) is locked; When the second limiting pin (345) is lifted by the position adjustment mechanism (22), the position adjustment mechanism (22) can adjust the position of the support plate (344) to adapt to the width of the frame.

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