Multi-stage jacking device

Abstract

The utility model relates to the technical field of jacking devices, in particular to a multi-stage jacking device which comprises a bottom pipe, a first telescopic pipe is arranged on the top of the bottom pipe in a penetrating mode, a second telescopic pipe is connected to the top of the first telescopic pipe in a penetrating mode, and a third telescopic pipe is connected to the top of the second telescopic pipe in a penetrating mode. A fourth telescopic pipe is connected to the top of the third telescopic pipe in a penetrating mode, a fifth telescopic pipe is connected to the top of the fourth telescopic pipe in a penetrating mode, driving pipes are arranged in inner cavities of the first telescopic pipe, the second telescopic pipe, the third telescopic pipe and the fourth telescopic pipe, and connecting plates are fixedly connected to the tops of the driving pipes. According to the driving mechanism, multi-stage synchronous control is achieved through the threaded rod, operation is easy and efficient, step-by-step operation is not needed, the working efficiency is improved, the overall stability is high, the multiple telescopic pipes are contained in an inner cavity of the bottom pipe during containing, the size of the device is greatly reduced, transportation and storage are convenient, and the device is suitable for occasions with limited space.

Description

Technical Field

[0001] This utility model relates to the field of lifting device technology, specifically a multi-stage lifting device. Background Technology

[0002] In industries such as construction and rescue, jacking devices are commonly used tools for lifting or supporting heavy objects. Traditional jacking devices typically employ single- or double-stage hydraulic cylinders or mechanical screw structures.

[0003] According to the search results, the announcement number CN218778701U, named a multi-stage lifting device, includes a fixed bracket, a driver, a first-stage output shaft, and a second-stage output shaft. Through research and analysis, it was found that although the device can be adjusted according to different distances, speeds, and uses to improve control accuracy, it still has the following drawbacks to some extent.

[0004] For example, lifting devices are bulky when stored, making them inconvenient to carry and store, especially in situations with limited space. The lifting height of a single-stage structure is limited by the length of the cylinder or screw, making it difficult to meet the needs of large-scale lifting. In order to solve the above technical problems, it is necessary to design a multi-stage lifting device. Utility Model Content

[0005] The purpose of this utility model is to provide a multi-stage lifting device, which has the advantages of realizing multi-stage synchronous control, simple and efficient operation, no need for step-by-step operation, reduced volume after storage, and convenient transportation and storage. It solves the problem that the lifting device is bulky when stored, which is inconvenient to carry and store, especially in situations with limited space. The lifting height of a single-stage structure is limited by the length of the cylinder or screw, making it difficult to meet the lifting needs of a wide range.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage lifting device, comprising a bottom tube, a first telescopic tube penetrating through the top of the bottom tube, a second telescopic tube penetrating through the top of the first telescopic tube, a third telescopic tube penetrating through the top of the second telescopic tube, a fourth telescopic tube penetrating through the top of the third telescopic tube, and a fifth telescopic tube penetrating through the top of the fourth telescopic tube. A drive tube is provided within the inner cavities of the first, second, third, and fourth telescopic tubes. A connecting plate is fixedly connected to the top of the drive tube, and a threaded rod is penetrating through the bottom of the bottom drive tube. A circular plate is fixedly connected to the top of the threaded rod, and a drive mechanism is installed at the bottom of the threaded rod.

[0007] Preferably, the driving mechanism includes a base plate, the top of which is fixedly connected to the bottom of the base tube, a rotating rod rotatably connected to the top of the base plate, a first gear fixedly sleeved on the surface of the rotating rod, a second gear meshing with the left side of the first gear, and a third gear meshing with the left side of the second gear.

[0008] Preferably, the third gear is fixedly sleeved on the surface of the threaded rod, the second gear is movably connected to the base plate through a rotating shaft, a turntable is fixedly connected to the top of the rotating rod, and a rocker arm is fixedly connected to the top of the turntable.

[0009] Preferably, the top of the threaded rod extends through the inner cavity of the drive tube and is fixedly connected to the connecting plate, and the threaded rod is threadedly connected to the inner wall of the first telescopic tube.

[0010] Preferably, the bottom of the base plate is movably connected to a fixing plate via a universal joint, the top of the fixing plate is in contact with a bolt, and the top of the bolt penetrates the base plate and is threadedly connected to the base plate.

[0011] Preferably, the top of the fifth telescopic tube is fitted with a sleeve, the top of the sleeve is fixedly connected to a support plate, the bottom of the support plate is fixedly connected to a spring telescopic rod, one side of the spring telescopic rod is fixedly connected to a vertical plate, one side of the vertical plate is fixedly connected to a clamping plate, one side of the clamping plate passes through the sleeve and the fifth telescopic tube respectively, and guide grooves are opened on both sides of the inner walls of the bottom tube, the first telescopic tube, the second telescopic tube, the third telescopic tube, the fourth telescopic tube and the fifth telescopic tube, and guide blocks are fixedly connected to the bottom of both sides of the first telescopic tube, the second telescopic tube, the third telescopic tube, the fourth telescopic tube and the fifth telescopic tube.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. In this utility model, the first telescopic tube is nested inside the bottom tube as the first-stage telescopic structure, the second telescopic tube is nested inside the first telescopic tube as the second-stage telescopic structure, the third telescopic tube is nested inside the second telescopic tube as the third-stage telescopic structure, the fourth telescopic tube is nested inside the third telescopic tube as the fourth-stage telescopic structure, and the fifth telescopic tube is nested inside the fourth telescopic tube as the fifth-stage telescopic structure. The drive mechanism achieves multi-stage synchronous control through a threaded rod, which is simple and efficient to operate, eliminating the need for step-by-step operation, thus improving work efficiency. The overall stability is high. When stored, multiple telescopic tubes are stored in the inner cavity of the bottom tube, greatly reducing the size of the device, facilitating transportation and storage, and making it suitable for occasions with limited space.

[0014] 2. This utility model increases the support area at the top of the fifth telescopic tube by setting a sleeve and a support plate, which facilitates better support for objects. By setting a spring telescopic rod, a vertical plate and a locking plate, the support plate can be locked and fixed, which improves the stability of the support plate. At the same time, it is convenient to replace the support plate with a support plate of different specifications as needed. Attached Figure Description

[0015] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0016] Figure 2 This is a top view of a partial structure of the present invention;

[0017] Figure 3 This is a three-dimensional schematic diagram of the telescopic tube of this utility model after it has been stored.

[0018] Figure 4 This is a three-dimensional schematic diagram of the fixing plate and bolts of this utility model;

[0019] Figure 5 This is a cross-sectional view of the drive tube and connecting plate of this utility model.

[0020] In the diagram: 1. Bottom tube; 2. First telescopic tube; 3. Second telescopic tube; 4. Third telescopic tube; 5. Fourth telescopic tube; 6. Fifth telescopic tube; 7. Drive tube; 8. Connecting plate; 9. Threaded rod; 10. Circular plate; 11. Drive mechanism; 110. Base plate; 111. Rotating rod; 112. First gear; 113. Second gear; 114. Third gear; 115. Turntable; 116. Fixing plate; 117. Bolt; 12. Sleeve; 13. Support plate; 14. Spring telescopic rod; 15. Vertical plate; 16. Clamping plate; 17. Guide groove; 18. Guide block. Detailed Implementation

[0021] Please see Figures 1-5A multi-stage lifting device includes a base pipe 1, a first telescopic pipe 2 penetrating through the top of the base pipe 1, a second telescopic pipe 3 penetrating through the top of the first telescopic pipe 2, a third telescopic pipe 4 penetrating through the top of the second telescopic pipe 3, a fourth telescopic pipe 5 penetrating through the top of the third telescopic pipe 4, and a fifth telescopic pipe 6 penetrating through the top of the fourth telescopic pipe 5. Each of the first, second, third, and fourth telescopic pipes has a drive pipe 7 within its inner cavity. A connecting plate 8 is fixedly connected to the top of each drive pipe 7, and a threaded rod 9 is penetrating through the bottom of the drive pipe 7. The top of the threaded rod 9 is fixed... The device is connected to a circular plate 10, and a drive mechanism 11 is installed at the bottom of the threaded rod 9. There are several drive tubes 7. By setting the bottom tube 1, the first telescopic tube 2, the second telescopic tube 3, the third telescopic tube 4, the fourth telescopic tube 5, and the fifth telescopic tube 6, multiple telescopic tubes can be controlled to extend and retract simultaneously to achieve the function of lifting objects. The drive mechanism 11 achieves multi-level synchronous control through the threaded rod 9. The operation is simple and efficient, without the need for step-by-step operation, which improves work efficiency. The overall stability is high. When stored, the multiple telescopic tubes are stored in the inner cavity of the bottom tube 1, which greatly reduces the size of the device, making it easy to transport and store, and suitable for occasions with limited space.

[0022] Please see Figure 1 The drive mechanism 11 includes a base plate 110, the top of which is fixedly connected to the bottom of the base tube 1. A rotating rod 111 is rotatably connected to the top of the base plate 110. A first gear 112 is fixedly sleeved on the surface of the rotating rod 111. A second gear 113 meshes with the left side of the first gear 112, and a third gear 114 meshes with the left side of the second gear 113. By setting the first gear 112, the second gear 113 and the third gear 114, the rotational power of the rotating rod 111 is transmitted to the threaded rod 9, thereby realizing the rotation of the threaded rod 9.

[0023] Please see Figure 1 The third gear 114 is fixedly sleeved on the surface of the threaded rod 9. The second gear 113 is movably connected to the base plate 110 through a rotating shaft. The top of the rotating rod 111 is fixedly connected to a turntable 115, and the top of the turntable 115 is fixedly connected to a rocker arm. By setting the turntable 115 and the rocker arm, it is easy to hold the rocker arm to drive the turntable 115 to rotate, thereby driving the rotating rod 111 to rotate, which facilitates the operation of the lifting device.

[0024] Please see Figure 1 The top of the threaded rod 9 extends through the inner cavity of the drive tube 7 and is fixedly connected to the connecting plate 8. The threaded rod 9 is threadedly connected to the inner wall of the first telescopic tube 2, and the drive tube 7 is threadedly connected to the telescopic tube correspondingly sleeved on its own surface.

[0025] Please see Figure 4The bottom of the base plate 110 is movably connected to the fixing plate 116 via a universal joint. The top of the fixing plate 116 contacts the bolt 117. The top of the bolt 117 penetrates the base plate 110 and is threadedly connected to the base plate 110. By setting the universal joint and the fixing plate 116, the bottom of the lifting device is supported. When used on circular tunnel segments or on areas with angled ground, the angle of the universal joint is adjusted in the required direction, and the bolt 117 is tightened to make it contact and abut against the fixing plate 116, ensuring that the force direction of the lifting device is still vertical, which facilitates lifting.

[0026] Please see Figure 1 The top of the fifth telescopic tube 6 is fitted with a sleeve 12, and a support plate 13 is fixedly connected to the top of the sleeve 12. A spring telescopic rod 14 is fixedly connected to the bottom of the support plate 13. A vertical plate 15 is fixedly connected to one side of the spring telescopic rod 14, and a clamping plate 16 is fixedly connected to one side of the vertical plate 15. One side of the clamping plate 16 passes through the sleeve 12 and the fifth telescopic tube 6 respectively. Guide grooves 17 are opened on both sides of the inner walls of the bottom tube 1, the first telescopic tube 2, the second telescopic tube 3, the third telescopic tube 4, the fourth telescopic tube 5, and the fifth telescopic tube 6. Guide blocks 18 are fixedly connected to the bottom of both sides of the first telescopic tube 2, the second telescopic tube 3, the third telescopic tube 4, the fourth telescopic tube 5, and the fifth telescopic tube 6. One side of the guide block 18 extends into the inner cavity of the guide groove 17. By setting the guide groove 17, the guide block 18 is guided, which facilitates the vertical movement of the guide block 18 and realizes the telescopic movement of the first telescopic tube 2, the second telescopic tube 3, the third telescopic tube 4, the fourth telescopic tube 5 and the fifth telescopic tube 6. By setting the sleeve 12 and the support plate 13, the support area at the top of the fifth telescopic tube 6 is increased, which facilitates better support for the object. By setting the spring telescopic rod 14, the vertical plate 15 and the locking plate 16, the support plate 13 can be locked and fixed, which improves the stability of the support plate 13 and facilitates the replacement of the support plate 13. Different specifications of support plates 13 can be replaced as needed.

[0027] In use, the rotating turntable 115 drives the rotating rod 111 to rotate, the rotating rod 111 drives the first gear 112 to rotate, the first gear 112 drives the second gear 113 to rotate, the second gear 113 drives the third gear 114 and the threaded rod 9 to rotate, the threaded rod 9 drives the first telescopic tube 2 to move vertically, the threaded rod 9 drives the drive tube 7 and the connecting plate 8 to rotate through the circular plate 10, the drive tube 7 drives the telescopic tube sleeved on its own surface to move upward, realizing the extension and retraction of the first telescopic tube 2, the second telescopic tube 3, the third telescopic tube 4, the fourth telescopic tube 5 and the fifth telescopic tube 6;

[0028] When disassembling the support plate 13, the moving vertical plate 15 drives the clamping plate 16 to move, so that the clamping plate 16 separates from the fifth telescopic tube 6, and the support plate 13 is moved upward to disassemble it.

[0029] In summary, this multi-stage lifting device, through the first telescopic tube 2, the second telescopic tube 3, the third telescopic tube 4, the fourth telescopic tube 5, the fifth telescopic tube 6, the drive tube 7, the connecting plate 8, the threaded rod 9, and the circular plate 10, solves the problem that lifting devices are bulky and inconvenient to carry and store, especially in situations with limited space, where the lifting height of a single-stage structure is limited by the length of the cylinder or screw, making it difficult to meet large-scale lifting needs.

Claims

1. A multi-stage lifting device, comprising a bottom pipe (1), characterized in that: The top of the bottom tube (1) is provided with a first telescopic tube (2), the top of the first telescopic tube (2) is connected to a second telescopic tube (3), the top of the second telescopic tube (3) is connected to a third telescopic tube (4), the top of the third telescopic tube (4) is connected to a fourth telescopic tube (5), the top of the fourth telescopic tube (5) is connected to a fifth telescopic tube (6), the inner cavities of the first telescopic tube (2), the second telescopic tube (3), the third telescopic tube (4) and the fourth telescopic tube (5) are all provided with a drive tube (7), the top of the drive tube (7) is fixedly connected to a connecting plate (8), the bottom of the bottom drive tube (7) is connected to a threaded rod (9), the top of the threaded rod (9) is fixedly connected to a circular plate (10), and the bottom of the threaded rod (9) is equipped with a drive mechanism (11).

2. The multi-stage lifting device according to claim 1, characterized in that: The drive mechanism (11) includes a base plate (110), the top of which is fixedly connected to the bottom of the base tube (1), and a rotating rod (111) is rotatably connected to the top of the base plate (110). A first gear (112) is fixedly sleeved on the surface of the rotating rod (111), a second gear (113) meshes with the left side of the first gear (112), and a third gear (114) meshes with the left side of the second gear (113).

3. The multi-stage lifting device according to claim 2, characterized in that: The third gear (114) is fixedly sleeved on the surface of the threaded rod (9), the second gear (113) is movably connected to the base plate (110) through a rotating shaft, the top of the rotating rod (111) is fixedly connected to a turntable (115), and the top of the turntable (115) is fixedly connected to a rocker arm.

4. A multi-stage lifting device according to claim 3, characterized in that: The top of the threaded rod (9) extends through the inner cavity of the drive tube (7) and is fixedly connected to the connecting plate (8). The threaded rod (9) is threadedly connected to the inner wall of the first telescopic tube (2).

5. A multi-stage lifting device according to claim 2, characterized in that: The bottom of the base plate (110) is movably connected to a fixing plate (116) via a universal joint. The top of the fixing plate (116) is in contact with a bolt (117). The top of the bolt (117) penetrates the base plate (110) and is threadedly connected to the base plate (110).

6. A multi-stage lifting device according to claim 1, characterized in that: The top of the fifth telescopic tube (6) is fitted with a sleeve (12), the top of the sleeve (12) is fixedly connected to a support plate (13), the bottom of the support plate (13) is fixedly connected to a spring telescopic rod (14), one side of the spring telescopic rod (14) is fixedly connected to a vertical plate (15), one side of the vertical plate (15) is fixedly connected to a clamping plate (16), one side of the clamping plate (16) passes through the sleeve (12) and the fifth telescopic tube (6), both sides of the inner walls of the bottom tube (1), the first telescopic tube (2), the second telescopic tube (3), the third telescopic tube (4), the fourth telescopic tube (5) and the fifth telescopic tube (6) are provided with guide grooves (17), and the bottom of both sides of the first telescopic tube (2), the second telescopic tube (3), the third telescopic tube (4), the fourth telescopic tube (5) and the fifth telescopic tube (6) are fixedly connected to guide blocks (18).

Images