A lifting and positioning device

Abstract

This utility model relates to the field of automotive parts processing technology, specifically a lifting and positioning device for lifting and positioning a processing bench. It includes a base, lifting components, limiting components, and a positioning structure. The base includes a base plate and two first guide plates, symmetrically located on opposite sides of the base. Two sets of lifting components are symmetrically positioned on the top of the base plate, corresponding to the first guide plates. Two sets of limiting components are located on top of the two sets of lifting components, used to limit the lifting components after lifting. The positioning structure includes two sets of positioning components, each located on one of the two sets of lifting components, used for positioning the processing bench. The modular combination of the base, lifting components, limiting components, and positioning structure forms a rigid closed-loop force system. The base and positioning structure ensure accurate loading and positioning of the processing bench. After lifting into position, the limiting components directly bear the load, avoiding long-term pressure holding by the lifting components.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing technology, specifically a lifting and positioning device. Background Technology

[0002] In the process of producing automotive parts, it is usually necessary to install machining fixtures on a machining stand to position the automotive parts. After positioning, the machining stand needs to be lifted to a suitable machining height to facilitate the machining of the automotive parts.

[0003] The existing utility model patent CN 216859054 U proposes a lifting device for processing automotive fixtures. This utility model uses bottom universal wheels to achieve overall movement and positioning. By rotating the handle, the screws on both sides are driven to rotate synchronously through the pulley and belt, so that the moving base is displaced. The hydraulic rod lifts the docking base on the fixing plate, and with the adjustable sliding block and the connector in the slot, the vertical lifting and horizontal position of the automotive fixture can be finely adjusted.

[0004] As described in the above technical solution, rotating the handle synchronously drives the lead screws on both sides to rotate, the hydraulic rod to lift, and the docking base to achieve fine adjustment of the horizontal and vertical position of the automotive fixture and stability during processing. However, the above device has problems with inaccurate positioning and excessive pressure on the hydraulic cylinder. Since the position of the docking base cannot be accurately fixed by manually rotating the handle, it affects the subsequent processing effect. At the same time, after the hydraulic cylinder lifts, the weight of the fixture and the workpiece is completely supported by the hydraulic cylinder piston rod. Under continuous processing vibration or off-center load, the hydraulic system needs to maintain pressure continuously, which can easily cause leakage and instability, reducing its service life. Utility Model Content

[0005] In view of the technical problems in the prior art, the present invention provides a lifting and positioning device, which aims to solve the problems of inaccurate positioning and excessive pressure on the hydraulic cylinder during processing.

[0006] A lifting and positioning device is used for lifting and positioning a processing table. The lifting and positioning device includes a base, a lifting component, a limiting component, and a positioning structure. The base includes a base plate and a first guide plate. The first guide plate includes two plates, which are respectively disposed on both sides of the base symmetrically, and are used to guide the processing trolley when it enters from both sides. The lifting components include two sets, which are symmetrically arranged on the top of the base plate and corresponding to the first guide plate. The middle of the two lifting components forms the entry channel in the middle of the processing trolley. The limiting component includes two sets, which are respectively disposed on the top of the two sets of lifting components, and are used to limit the lifting component after the lifting component has been lifted. The positioning structure includes positioning components, which consist of two sets, each set on a lifting component, for positioning the processing table.

[0007] Optionally, the lifting component includes a mounting plate, a lifting cylinder, and a cover, wherein, The mounting plate is detachably connected to the top of the base plate; The cover is placed on top of the mounting plate and is detachably connected to it; The lifting cylinder includes two cylinders, which are symmetrically arranged at both ends of the cover body and fixed to the top of the cover body. The top of the lifting cylinder is provided with a piston rod, which slides through the top of the cover body and extends to the outside.

[0008] Optionally, the lifting component further includes a lifting plate and a positioning pin, wherein, The lifting plate is located at the top of the piston rod outside the cover; The positioning pin is located on the top of the lifting plate and is used to insert it onto the processing table during lifting.

[0009] Optionally, the limiting component includes a limiting block, a limiting cylinder, and a linkage rod, wherein, The limiting block includes two blocks, which are respectively located on the top of the cover at the two piston rods and on the same side of the two piston rods; The limiting cylinder is located at one of the limiting blocks and is driven to it; it is used to drive the limiting block to slide into or out of the bottom of the lifting plate. The linkage rod is fixed between the two limiting blocks, and is used for the two limiting blocks to slide synchronously into or out of the bottom of the corresponding lifting plate.

[0010] Optionally, the limiting block includes a linkage block and a support block, wherein, The linkage block is located at the piston rod and at the bottom of the lifting plate, and is fixedly connected to the linkage rod. The linkage block has a movable groove at the piston rod corresponding to the piston rod for the piston rod to move back and forth. The support block is detachably mounted on the top of one side of the linkage block, and is used to move to the bottom of the lifting plate after the lifting plate is lifted, so as to limit its movement.

[0011] Optionally, the positioning element includes a fixing block and a positioning block, wherein, The fixing block is detachably mounted on the top of the cover; The positioning block is detachably located on the side of the fixed block facing the entry end of the processing table, and the side of the positioning block facing the entry end of the processing table has a positioning groove adapted to the processing table.

[0012] Optionally, the positioning structure further includes a positioning post and a positioning plug, wherein, The positioning column is detachably mounted on the base plate and is perpendicular to the base plate, and is located in the middle of the two lifting components; The positioning plug is detachably located on the top of the positioning column on the side facing the entry end of the processing table, and is used for positioning and fixing the processing table.

[0013] Optionally, the positioning plug includes a positioning cylinder and a pin, wherein, The positioning cylinder is fixedly mounted on the top of the positioning column; The pin is located on the side of the positioning cylinder facing the entry end of the machining table and is driven to connect with it; it is used to fix the pin on the machining table after it is lifted and positioned.

[0014] Optionally, a second guide plate is also included. The second guide plate comprises two plates, which are detachably disposed on opposite sides of the two covers, for guiding the trolley when it enters from the middle.

[0015] Compared with the prior art, the lifting and positioning device provided by this utility model has the following advantages: (1) A rigid closed-loop force system is formed by modular combination of base, lifting component, limiting component and positioning structure; the base and positioning structure ensure the accurate introduction and positioning of the processing table, and the limiting component directly bears the load after lifting into place, avoiding long-term pressure holding of the lifting component and solving the problem of leakage and shortened life of the lifting component due to continuous pressure.

[0016] (2) Through the lifting and locking module consisting of lifting cylinder, cover, lifting plate and linkage limit block, after the lifting cylinder pushes the platform to a certain height in one go, the limit cylinder immediately drives the limit blocks on both sides to slide into the bottom of the lifting plate to complete the mechanical self-locking. Then, the lifting cylinder lowers the platform to the ground of the lifting plate and connects it to the support block, transferring the load from the pneumatic system to the rigid support surface in an instant. This eliminates the positioning error caused by manual adjustment and frees the cylinder from long-term pressure holding, avoiding leakage and instability. At the same time, the height of the support block can be adjusted according to the processing requirements, taking into account both lifting accuracy and cylinder service life.

[0017] (3) Through the quick positioning and fixing module composed of a fixed block, a positioning block, a positioning groove, a positioning column, a positioning cylinder and a pin, when the platform is pushed in along the second guide plate, the positioning groove first completes the automatic alignment in the horizontal direction, and the positioning cylinder at the top of the positioning column then drives the pin to extend and lock the platform, realizing precise positioning and fixing in both horizontal and vertical directions, which greatly shortens the changeover time. Processing vibration and off-center load are directly borne by the mechanical structure, further improving stability and safety. In addition, all positioning elements adopt a detachable design, making maintenance and specification switching convenient and quick, and meeting the requirements of flexible collinearity. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a lifting and positioning device according to the present invention; Figure 2 This is a schematic diagram of the connection structure between the lifting component and the limiting component of a lifting and positioning device according to this utility model; Figure 3 This is a schematic diagram of the positioning component structure of a lifting and positioning device according to the present invention.

[0019] In the diagram: 1. Base; 11. Base plate; 12. First guide plate; 2. Lifting component; 201. Piston rod; 21. Mounting plate; 22. Lifting cylinder; 23. Cover; 24. Lifting plate; 25. Positioning pin; 3. Limiting component; 301. Movable groove; 31. Limiting block; 311. Linkage block; 312. Support block; 32. Limiting cylinder; 33. Linkage rod; 4. Positioning structure; 401. Positioning groove; 41. Positioning component; 411. Fixing block; 412. Positioning block; 42. Positioning column; 43. Positioning insert; 431. Positioning cylinder; 432. Pin; 5. Second guide plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-3 This application proposes a lifting and positioning device for lifting and positioning a processing table. The lifting and positioning device includes a base 1, a lifting component 2, a limiting component 3, and a positioning structure 4.

[0022] like Figure 1 As shown, the base 1 includes a base plate 11 and a first guide plate 12. The first guide plate 12 includes two plates, which are respectively disposed on the two symmetrical sides of the base 1 for guiding the processing trolley when it enters from both sides. The lifting member 2 includes two sets, which are symmetrically disposed on the top of the base plate 11 and are disposed corresponding to the first guide plate 12. The middle of the two lifting members 2 forms an entry channel in the middle of the processing trolley. The limiting member 3 includes two sets, which are respectively disposed on the top of the two sets of lifting members 2 for limiting the lifting members 2 after they are lifted. The positioning structure 4 includes positioning members 41, which includes two sets, which are respectively disposed on the two sets of lifting members 2 for positioning the processing table.

[0023] Specifically, the modular layout integrates the three major functions of lifting, limiting, and positioning within the same rigid closed-loop force system. The base plate 11 and the first guide plate 12 first provide a horizontal reference for the platform, ensuring the uniqueness of the guide path, and together with the positioning structure 4, ensure the accurate guide and positioning of the processing platform; the lifting component 2 and the limiting component 3 form a "lift first, then lock" relay in the vertical direction. After the lifting is in place, the load is borne by the limiting component 3, and the lifting component 2 is no longer continuously under pressure, thereby avoiding the leakage, instability, and shortened lifespan problems caused by long-term pressure holding of traditional lifting components 2.

[0024] In some embodiments, such as Figure 1-2 As shown, the lifting component 2 includes a mounting plate 21, a lifting cylinder 22, a cover 23, a lifting plate 24, and a positioning pin 25. The mounting plate 21 is detachably connected to the top of the base plate 11. The cover 23 covers the top of the mounting plate 21 and is detachably connected to it. There are two lifting cylinders 22, which are symmetrically arranged at both ends inside the cover 23 and fixed to the top inside the cover 23. A piston rod 201 is provided at the top of the lifting cylinder 22. The piston rod 201 slides through the top of the cover 23 and extends to the outside. The lifting plate 24 is located at the top of the piston rod 201 outside the cover 23. The positioning pin 25 is located at the top of the lifting plate 24 and is used to be inserted into the processing table during lifting.

[0025] Specifically, the cover 23, base plate 11, and mounting plate 21 provide fixed support for the lifting cylinder 22. The lifting cylinder 22 is built into the cover 23, which can prevent damage to the lifting cylinder 22 when the platform is pushed in. The piston rod 201 slides up and down in the guide hole at the top of the cover 23, eliminating the cumulative error caused by the clearance and elastic deformation of the traditional lead screw and belt mechanism. At the same time, the lifting plate 24 provides a large bearing surface, and the positioning pin 25 is precisely matched with the hole system on the bottom of the platform. The initial positioning in the Z and XY directions is completed instantly during the lifting, avoiding secondary alignment. After the lifting is completed, the lifting plate 24 and the support block 312 form a surface contact, and the load is upgraded from point contact to surface contact, resulting in a more uniform stress distribution and further reducing local wear.

[0026] In some embodiments, such as Figure 1-2 As shown, the limiting component 3 includes a limiting block 31, a limiting cylinder 32, and a linkage rod 33. The limiting block 31 includes two blocks, which are respectively located on the top of the cover 23 at the two piston rods 201 and on the same side of the two piston rods 201. The limiting cylinder 32 is located at one of the limiting blocks 31 and is driven to drive the limiting block 31 to slide into or out of the bottom of the lifting plate 24. The linkage rod 33 is fixedly located between the two limiting blocks 31 and is used for the two limiting blocks 31 to slide into or out of the bottom of the corresponding lifting plate 24 synchronously.

[0027] Specifically, the limiting block 31 is set on the same side of the two piston rods 201. In conjunction with the linkage rod 33, the limiting cylinder 32 only needs one short stroke to synchronously drive the limiting blocks 31 on both sides, so that the two limiting blocks 31 can slide into or out of the bottom of the lifting plate 24 at the same time. Here, a limiting groove can be set at the top of the cover 23 corresponding to the limiting block 31 to limit the activity area and direction. This mechanical self-locking structure replaces the continuous air pressure maintenance. The lifting cylinder 22 can immediately depressurize and return to zero, thereby completely avoiding the risks of temperature rise, seal aging and leakage caused by pressure maintenance in the traditional solution.

[0028] In some embodiments, such as Figure 2 As shown, the limiting block 31 includes a linkage block 311 and a support block 312. The linkage block 311 is located at the piston rod 201 and at the bottom of the lifting plate 24, and is fixedly connected to the linkage rod 33. The linkage block 311 has a movable groove 301 for the piston rod 201 to move back and forth. The support block 312 is detachably located on the top side of the linkage block 311 and is used to move to the bottom of the lifting plate 24 after the lifting plate 24 is lifted, and to limit its movement.

[0029] Specifically, the support block 312 and the linkage block 311 are connected by dovetail grooves or bolts for quick connection. The support block 312 of the corresponding height can be replaced according to the height tolerance of different vehicle models and benches to achieve flexible height adjustment. After the lifting plate 24 descends to the support block 312, the piston rod 201 and the lifting cylinder 22 are completely unloaded and only used as a return drive, which greatly extends the life of the lifting cylinder 22.

[0030] In some embodiments, such as Figure 3 As shown, the positioning component 41 includes a fixing block 411 and a positioning block 412. The fixing block 411 is detachably disposed on the top of the cover 23. The positioning block 412 is detachably disposed on the side of the fixing block 411 facing the entry end of the processing table. The side of the positioning block 412 facing the entry end of the processing table has a positioning groove 401 adapted to the processing table.

[0031] Specifically, when the stand is pushed in along the first guide plate 12, the positioning groove 401 automatically levels itself in the horizontal direction, transforming the traditional manual hand-cranked fine adjustment into a "precise in place" mechanical positioning, thus shortening the changeover time. The detachable structure of the fixing block 411 and the positioning block 412 allows for quick replacement of parts with different positioning grooves 401, meeting the flexible co-line requirements of multiple vehicle models.

[0032] In some embodiments, such as Figure 1As shown, the positioning structure 4 also includes a positioning post 42 and a positioning insert 43. The positioning post 42 is detachably mounted on the base plate 11 and is perpendicular to the base plate 11, located in the middle of the two lifting components 2. The positioning insert 43 is detachably mounted on the top of the positioning post 42 facing the entry end of the processing table, and is used for positioning and fixing the processing table. The positioning insert 43 includes a positioning cylinder 431 and a pin 432. The positioning cylinder 431 is fixedly mounted on the top of the positioning post 42. The pin 432 is mounted on the side of the positioning cylinder 431 facing the entry end of the processing table and is driven to connect with it, and is used to fix it on the processing table after lifting and positioning.

[0033] Specifically, the positioning column 42 and the two lifting components 2 on both sides form a three-point anti-torsional support. When the test bench enters along the guide channel and is lifted and positioned to the final height by the lifting plate 24, the positioning cylinder 431 drives the pin 432 to extend and insert into the corresponding hole of the test bench, achieving zero-clearance rigid locking in the horizontal and vertical directions. At this time, all processing vibrations and off-center loads are directly transmitted through the pin 432, positioning column 42, and base plate 11, completely bypassing the lifting cylinder 22. This eliminates leakage and instability caused by long-term pressure holding in traditional hydraulic systems and shortens the positioning and fixing actions during model changeover. At the same time, the positioning column 42, positioning cylinder 431, and pin 432 are all replaceable and can be adapted to test benches of different models, taking into account the requirements of stability, safety, and flexible co-line.

[0034] In some embodiments, such as Figure 1 As shown, the lifting and positioning device also includes a second guide plate 5. There are two second guide plates 5, which are detachably installed on opposite sides of the two covers 23, and are used to guide the middle of the processing trolley when it enters.

[0035] Specifically, the second guide plate 5 and the first guide plate 12 together form a four-way guide channel, which automatically centers the platform during the pushing process and avoids collisions. The second guide plate 5 can be quickly disassembled and assembled using bolts or pins, and can be replaced with different width specifications according to the platform, making it compatible with a variety of platform sizes and widely applicable.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model 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 utility model.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A jacking positioning device for jacking positioning of a machining stand, characterized in that: The jacking positioning device comprises a base (1), jacking parts (2), limiting parts (3) and a positioning structure (4), wherein, The base (1) comprises a bottom plate (11) and first guide plates (12), the first guide plates (12) comprise two, which are respectively arranged on the two symmetrical sides of the base (1), and are used for guiding when the processing trolley enters from both sides; The jacking parts (2) comprise two groups, which are symmetrically arranged on the top of the bottom plate (11) and correspond to the first guide plates (12), and the middle parts of the two jacking parts (2) form an entering channel for the middle part of the processing trolley; The limiting parts (3) comprise two groups, which are respectively arranged on the top of the two jacking parts (2), and are used for limiting the jacking parts (2) after the jacking parts (2) are jacked up; The positioning structure (4) comprises a positioning part (41), the positioning part (41) comprises two groups, which are respectively arranged on the two jacking parts (2), and are used for positioning the processing trolley.

2. A jacking positioning device according to claim 1, wherein The jacking part (2) comprises a mounting plate (21), a jacking cylinder (22) and a cover body (23), wherein, The mounting plate (21) is detachably connected to the top of the bottom plate (11); The cover body (23) is covered on the top of the mounting plate (21) and is detachably connected thereto; The jacking cylinder (22) comprises two, which are symmetrically arranged in the cover body (23) at both ends and are fixed to the top of the cover body (23), the top of the jacking cylinder (22) is provided with a piston rod (201), the piston rod (201) slides through the top of the cover body (23) and extends to the outside.

3. A jacking positioning device according to claim 2, wherein The jacking part (2) further comprises a jacking disc (24) and a positioning pin (25), wherein, The jacking disc (24) is arranged on the top of the piston rod (201) outside the cover body (23); The positioning pin (25) is arranged on the top of the jacking disc (24) and is inserted on the processing trolley during jacking.

4. A jacking positioning device according to claim 3, wherein The limiting part (3) comprises a limiting block (31), a limiting cylinder (32) and a linkage rod (33), wherein, The limiting block (31) comprises two, which are respectively arranged on the top of the cover body (23) at the two piston rods (201) and are located on the same side of the two piston rods (201); The limiting cylinder (32) is arranged at one of the limiting blocks (31) and is drivingly connected thereto; for driving the limiting block (31) to slide into or out of the bottom of the jacking disc (24); The linkage rod (33) is fixedly arranged between the two limiting blocks (31), and is used for synchronously sliding the two limiting blocks (31) into or out of the bottom of the corresponding jacking disc (24).

5. A jacking positioning device according to claim 4, wherein The limiting block (31) comprises a linkage block (311) and a supporting block (312), wherein, The linkage block (311) is arranged at the piston rod (201) and located at the bottom of the jacking disc (24), and is fixedly connected with the linkage rod (33), the linkage block (311) is provided with a movable groove (301) corresponding to the piston rod (201) for reciprocating movement of the piston rod (201); The supporting block (312) is detachably arranged on one side of the top of the linkage block (311), and is used for moving to the bottom of the jacking disc (24) to limit the jacking disc (24) after jacking.

6. The jacking positioning device of claim 2, wherein, The positioning member (41) comprises a fixing block (411) and a positioning block (412), wherein, The fixing block (411) is detachably arranged on the top of the cover (23); The positioning block (412) is detachably arranged on the side of the fixing block (411) facing the entering end of the machining rack, and the side of the positioning block (412) facing the entering end of the machining rack is provided with a positioning groove (401) matched with the machining rack.

7. The jacking positioning device of claim 1, wherein, The positioning structure (4) further comprises a positioning column (42) and a positioning plug-in component (43), wherein, The positioning column (42) is detachably arranged on the bottom plate (11) and is arranged perpendicularly to the bottom plate (11) and is located at the middle part of the two jacking members (2); The positioning plug-in component (43) is detachably arranged on the side of the top of the positioning column (42) facing the entering end of the machining rack, and is used for positioning and fixing the machining rack.

8. A jacking positioning device according to claim 7, wherein The positioning plug-in component (43) comprises a positioning air cylinder (431) and a latch (432), wherein, The positioning air cylinder (431) is fixedly arranged on the top of the positioning column (42); The latch (432) is arranged on the side of the positioning air cylinder (431) facing the entering end of the machining rack and is drivingly connected therewith; and is used for fixing and inserting on the machining rack after the jacking and positioning.

9. The jacking positioning device of claim 2, wherein, Further comprising a second guide plate (5), the second guide plate (5) comprises two, which are respectively detachably arranged on the opposite sides of the two cover (23), and are used for guiding when the machining trolley enters the middle part.

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