A whole frame test bench frame lifting device

Abstract

This utility model discloses a lifting device for a complete test bench frame, belonging to the technical field of mechanical lifting equipment. It includes a mounting base plate, a lifting assembly, and a clamping assembly. The mounting base plate is equipped with a lower slide rail, a rack, and a limiting block. The lower slide is connected to a gear and a worm gear via a gear shaft; the gear meshes with the rack to achieve horizontal movement. A motor drives the worm shaft to rotate via a sprocket drive, which in turn drives the worm gear and gear shaft to rotate, thereby controlling the movement of the lower slide along the rack. The lifting assembly uses an X-type linkage mechanism to connect the lower slide to the upper slide on the upper slide rail, achieving smooth lifting and lowering of the mounting top plate. The clamping assembly includes a bidirectional threaded screw, a clamping slide, and a clamping column. The distance between the two clamping slides can be adjusted by rotating a handwheel to accommodate the fixing requirements of specimens of different sizes. This device has advantages such as smooth transmission, high lifting accuracy, and adjustable clamping range, and is suitable for reliable specimen clamping.

Description

Technical Field

[0001] This utility model relates to the field of mechanical lifting equipment technology, specifically a lifting device for a whole test bench frame. Background Technology

[0002] With the continuous development of industrial manufacturing and testing technologies, various types of complete test benches are increasingly widely used in aviation, automotive, and machinery fields, with the test bench frame serving as a key load-bearing and installation foundation.

[0003] The height needs to be precisely adjusted according to different test objects and working conditions. Currently, most common lifting devices use hydraulic or motor-driven direct-drive methods, which have problems such as limited accuracy and poor self-locking performance. Especially in situations where lifting and specimen clamping functions need to be achieved simultaneously, most existing devices lack the ability to coordinate the adjustment of height and clamping, resulting in poor adaptability. They are unable to meet the installation and use requirements of high-precision, multi-purpose test benches. Utility Model Content

[0004] The purpose of this utility model is to provide a lifting device for the entire test bench frame to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lifting device for a complete test bench frame, comprising a mounting base plate, two lower slide rails welded to the mounting base plate, two limiting blocks welded to each side of the two lower slide rails, two sliding blocks slidably connected to each of the two lower slide rails, a gear shaft connected between the two sliding blocks via bearings, two gears welded to the sidewalls near both ends of the gear shaft, a worm gear welded to the middle sidewall of the gear shaft, two racks welded to the upper surface of the mounting base plate, a connecting plate welded between the two sliding blocks, a worm gear through groove on the upper surface of the connecting plate, two worm mounting blocks welded to the upper surface of the connecting plate on both sides of the worm gear through groove, a worm shaft connected between the worm mounting blocks via bearings, an output sprocket welded to one end of the worm shaft through one side of the worm mounting block, a motor fixedly connected to the upper surface of the connecting plate by bolts, an input sprocket connected to the output shaft of the motor via a key, a lifting assembly mounted on the mounting base plate, and a clamping assembly mounted on the lifting assembly.

[0006] Preferably, the lifting assembly includes two lower sliding block inclined rods connected to the sides of two lower sliding blocks via a rotating shaft. Two lower mounting blocks are welded to the mounting base plate. Through grooves on the upper surfaces of the two lower mounting blocks are connected to one end of two upper sliding block inclined rods via a rotating shaft. The two upper sliding block inclined rods are connected to the two lower sliding block inclined rods via a rotating shaft, forming two "X" shapes. One end of the two lower sliding block inclined rods is connected to the two upper mounting blocks via a rotating shaft. A mounting top plate is welded to the upper surface of the two upper mounting blocks. Two upper slide rails are welded to the lower surface of the mounting top plate. Two upper sliding blocks are slidably connected to the two upper slide rails. The other ends of the two upper sliding block inclined rods are connected to the sides of the two upper sliding blocks via a rotating shaft, enabling the device to rise stably.

[0007] Preferably, the clamping assembly includes two lead screw fixing blocks welded to the upper surface of the mounting top plate. A bidirectional threaded lead screw is connected between the two lead screw fixing blocks via a bearing. One end of the bidirectional threaded lead screw passes through a lead screw fixing block and is welded to a handwheel. Two clamping sliders are threaded onto the two threads of the bidirectional threaded lead screw. Two clamping slide rails are welded to the upper surface of the mounting top plate. The two clamping sliders slide on the two clamping slide rails. Two clamping posts are welded to each end of the upper surface of the two clamping sliders. Four support posts are welded to the upper surface of the mounting top plate. A fixing plate is welded to the four support posts. The fixing plate has four clamping post moving slots. The four clamping posts slide within the four clamping post moving slots, allowing the device to clamp the specimen.

[0008] Preferably, the two gears mesh with the two racks, and the worm wheel portion passes through the worm wheel slot and meshes with the worm teeth of the worm shaft.

[0009] Preferably, the connecting plate is located above the gear shaft.

[0010] Preferably, a chain connects the input sprocket and the output sprocket.

[0011] Compared with the prior art, the beneficial effects of this utility model are: Smooth transmission and precise control: The gear and rack meshing transmission, combined with the worm gear reduction mechanism, enables the smooth and precise horizontal movement of the lower slider. In turn, the X-type linkage mechanism drives the top plate to rise and fall stably, effectively avoiding impact and shaking, making it suitable for high-precision testing environments.

[0012] Self-locking and reliable: The worm gear transmission has a reverse self-locking characteristic, which can be reliably locked at any position to prevent the lifting device from falling unexpectedly under power failure or load conditions, thus ensuring operational safety.

[0013] The clamping range is flexible and adjustable: the two clamping sliders can be moved in opposite directions by driving the bidirectional threaded screw through the handwheel, which can adapt to the clamping requirements of specimens of different sizes and improve the versatility and ease of operation of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle; Figure 3 For the present utility model Figure 1 Enlarged structural diagram at point B; Figure 4 This is a schematic diagram of the structure of the lower part of the mounting top plate of this utility model.

[0015] In the diagram: 1. Mounting base plate; 2. Mounting top plate; 3. Lower mounting block; 4. Upper slider slant rod; 5. Lower slide rail; 6. Limit block; 7. Lower slider; 8. Lower slider slant rod; 9. Connecting plate; 10. Gear shaft; 11. Input sprocket; 12. Output sprocket; 13. Worm mounting block; 14. Worm shaft; 15. Worm wheel; 16. Rack; 17. Handwheel; 18. Fixing plate; 19. Support column; 20. Clamping slide rail; 21. Clamping slider; 22. Double-acting threaded screw; 23. Clamping column; 24. Clamping column moving groove; 25. Screw fixing block; 26. Upper mounting block; 27. Upper slide rail; 28. Upper slider; 29. ​​Gear. Detailed Implementation

[0016] 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.

[0017] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this 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. Therefore, they should not be construed as limitations on this utility model.

[0018] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] Please see Figure 1-4 This utility model provides a technical solution: a lifting device for a complete test bench frame, including a mounting base plate 1, two lower sliding rails 5 welded to the mounting base plate 1, two limiting blocks 6 welded to each side of the two lower sliding rails 5, two sliding blocks 7 slidably connected to each of the two lower sliding rails 5, a gear shaft 10 connected between the two sliding blocks 7 via bearings, two gears 29 welded to the side walls near both ends of the gear shaft 10, a worm gear 15 welded to the middle side wall of the gear shaft 10, and two racks 16 welded to the upper surface of the mounting base plate 1. A connecting plate 9 is welded between the two sliding blocks 7. A worm gear groove is provided on the upper surface of the connecting plate 9. Two worm mounting blocks 13 are welded to the upper surface of the connecting plate 9 and on both sides of the worm gear groove. A worm shaft 14 is connected between the worm mounting blocks 13 through a bearing. One end of the worm shaft 14 passes through one side of the worm mounting block 13 and is welded to an output sprocket 12. A motor is fixedly connected to the upper surface of the connecting plate 9 by bolts. The output shaft of the motor is connected to an input sprocket 11 by a key. A lifting assembly is installed on the mounting base plate 1, and a clamping assembly is installed on the lifting assembly.

[0020] Furthermore, the lifting assembly includes two lower sliders 7 with two lower slider inclined rods 8 connected to their sides via a rotating shaft. Two lower mounting blocks 3 are welded to the mounting base plate 1. The upper surfaces of the two lower mounting blocks 3 have through grooves connected to one end of two upper slider inclined rods 4 via a rotating shaft. The two upper slider inclined rods 4 and the two lower slider inclined rods 8 are connected to each other via a rotating shaft and form two "X" shapes. One end of the two lower slider inclined rods 8 is connected to two upper mounting blocks 26 via a rotating shaft. A mounting top plate 2 is welded to the upper surface of the two upper mounting blocks 26. Two upper slide rails 27 are welded to the lower surface of the mounting top plate 2. Two upper sliders 28 are slidably connected to the two upper slide rails 27. The other ends of the two upper slider inclined rods 4 are connected to the sides of the two upper sliders 28 via a rotating shaft, enabling the device to rise stably.

[0021] Furthermore, the clamping assembly includes two lead screw fixing blocks 25 welded to the upper surface of the mounting top plate 2. A bidirectional threaded lead screw 22 is connected between the two lead screw fixing blocks 25 via a bearing. One end of the bidirectional threaded lead screw 22 passes through one of the lead screw fixing blocks 25 and is welded to a handwheel 17. Two clamping sliders 21 are threaded to the two threads of the bidirectional threaded lead screw 22. Two clamping slide rails 20 are welded to the upper surface of the mounting top plate 2. The two clamping sliders 21 slide on the two clamping slide rails 20. Two clamping posts 23 are welded to each end of the upper surface of the two clamping sliders 21. Four support posts 19 are welded to the upper surface of the mounting top plate 2. A fixing plate 18 is welded to the four support posts 19. Four clamping post moving slots 24 are opened on the fixing plate 18. The four clamping posts 23 slide in the corresponding four clamping post moving slots 24, so that the device can clamp the specimen.

[0022] Furthermore, the two gears 29 mesh with the two racks 16 respectively, and the worm wheel 15 passes through the worm wheel slot and meshes with the worm teeth of the worm shaft 14.

[0023] Furthermore, the connecting plate 9 is located above the gear shaft 10.

[0024] Furthermore, a chain connects the input sprocket 11 and the output sprocket 12.

[0025] Working principle: Height Adjustment: The operator starts the motor on the connecting plate 9. The motor output shaft drives the input sprocket 11 to rotate via a key connection. The input sprocket 11 drives the output sprocket 12 to rotate via a chain. The output sprocket 12 is welded to one end of the worm shaft 14, thereby driving the worm shaft 14 to rotate. The worm shaft 14 meshes with the worm wheel 15 welded to the gear shaft 10, driving the gear shaft 10 to rotate. The gears 29 welded to both ends of the gear shaft 10 mesh with the rack 16 welded to the mounting base plate 1. This meshing motion converts the rotation of the gear shaft 10 into the horizontal movement of the lower slider 7 along the lower slide rail 5. The horizontal movement of the lower slider 7 drives the lower slider inclined rod 8 to move via a rotating shaft. The lower slider inclined rod 8 and the upper slider inclined rod 4 are connected by a rotating shaft and arranged in an "X" shape. Their movement converts the horizontal displacement of the lower slider 7 into the vertical lifting motion of the upper mounting block 26 and the mounting top plate 2. The upper slide rail 27 and the upper slider 28 on the lower surface of the mounting top plate 2 provide guidance and support for the lifting process. The worm gear mechanism consisting of the worm wheel 15 and the worm shaft 14 has a reverse self-locking characteristic, which can reliably lock at any position during the lifting process to ensure load safety.

[0026] Clamping and releasing the specimen: The operator turns the handwheel 17, driving the double-threaded screw 22 to rotate. The double-threaded screw 22 is threadedly engaged with the two clamping sliders 21, causing the two clamping sliders 21 to slide in opposite directions along the clamping slide rail 20 welded to the mounting top plate 2. The clamping posts 23 welded to the upper surface of the clamping sliders 21 move accordingly, and their movement trajectory is constrained by the clamping post moving groove 24 opened in the fixing plate 18 fixed to the support post 19, thereby realizing the clamping and releasing of specimens of different sizes.

[0027] 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 lifting device for a complete test bench frame, comprising a mounting base plate (1), characterized in that: Two sliding rails (5) are welded to the mounting base plate (1). Two limiting blocks (6) are welded to both sides of the two sliding rails (5). Two sliding blocks (7) are slidably connected to the two sliding rails (5). A gear shaft (10) is connected between the two sliding blocks (7) through a bearing. Two gears (29) are welded to the side walls of the gear shaft (10) near both ends. A worm gear (15) is welded to the middle side wall of the gear shaft (10). Two racks (16) are welded to the upper surface of the mounting base plate (1). A connecting plate is welded between the two sliding blocks (7). (9) A worm gear through groove is provided on the upper surface of the connecting plate (9). Two worm mounting blocks (13) are welded to the upper surface of the connecting plate (9) and on both sides of the worm gear through groove. A worm shaft (14) is connected between the worm mounting blocks (13) through a bearing. One end of the worm shaft (14) passes through one side of the worm mounting block (13) and is welded to an output sprocket (12). A motor is fixedly connected to the upper surface of the connecting plate (9) by bolts. An input sprocket (11) is connected to the output shaft of the motor through a key. A lifting assembly is installed on the mounting base plate (1). A clamping assembly is installed on the lifting assembly.

2. The lifting device for the entire test bench frame according to claim 1, characterized in that: The lifting assembly includes two lower sliders (7) connected to two lower sliders (8) by a rotating shaft. Two lower mounting blocks (3) are welded to the mounting base plate (1). The upper surfaces of the two lower mounting blocks (3) are connected to one end of two upper sliders (4) by a rotating shaft. The two upper sliders (4) and the two lower sliders (8) are connected by a rotating shaft and are in two "X" shapes. One end of the two lower sliders (8) is connected to two upper mounting blocks (26) by a rotating shaft. The upper surfaces of the two upper mounting blocks (26) are welded to a mounting top plate (2). The lower surface of the mounting top plate (2) is welded to two upper slide rails (27). Two upper sliders (28) are slidably connected to the two upper slide rails (27). The other ends of the two upper sliders (4) are connected to the sides of the two upper sliders (28) by a rotating shaft.

3. The lifting device for the entire test bench frame according to claim 1, characterized in that: The clamping assembly includes two lead screw fixing blocks (25) welded to the upper surface of the mounting plate (2). A bidirectional threaded lead screw (22) is connected between the two lead screw fixing blocks (25) via a bearing. One end of the bidirectional threaded lead screw (22) passes through one lead screw fixing block (25) and is welded to a handwheel (17). Two clamping sliders (21) are threaded onto the two threads of the bidirectional threaded lead screw (22). Two clamping slide rails (20) are welded to the upper surface of the mounting plate (2). The clamping slider (21) is slidably connected on two clamping slide rails (20). Two clamping columns (23) are welded to each end of the upper surface of the two clamping sliders (21). Four support columns (19) are welded to the upper surface of the mounting top plate (2). A fixing plate (18) is welded to the four support columns (19). Four clamping column moving slots (24) are opened on the fixing plate (18). The four clamping columns (23) slide in the four clamping column moving slots (24).

4. The lifting device for the entire test bench frame according to claim 1, characterized in that: The two gears (29) mesh with the two racks (16) respectively, and the worm wheel (15) passes through the worm wheel slot and meshes with the worm teeth of the worm shaft (14).

5. The lifting device for the entire test bench frame according to claim 1, characterized in that: The connecting plate (9) is located above the gear shaft (10).

6. The lifting device for the entire test bench frame according to claim 1, characterized in that: A chain connects the input sprocket (11) and the output sprocket (12).

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