Portable labor-saving jack flat-lifting dual-purpose device
The portable, labor-saving jack, which combines bevel gears and threaded rods, solves the problem of inaccurate jack height adjustment, enables precise adjustment of the support column and quick disassembly of the base, and improves the efficiency and portability of piano handling.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUHANG AEROSPACE EQUIP CO LTD
- Filing Date
- 2025-07-08
- Publication Date
- 2026-07-28
AI Technical Summary
The existing jacks have low precision in height adjustment, especially in scenarios such as moving pianos where multiple precise height adjustments are required, resulting in low efficiency in piano moving.
A portable, labor-saving jack with both lifting and lowering functions was designed. Through the combination of bevel gears and threaded rods, the height of the support column can be precisely adjusted, and the position of the support column can be fixed by the cooperation of the limiting ring and the limiting column. At the same time, the base can be quickly disassembled and carried by using nickel alloy springs and sliding components.
It enables precise height adjustment of the support column, reduces operational intensity, improves handling efficiency, and facilitates the carrying of the jack.
Smart Images
Figure CN224564173U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of jack technology, and in particular to a portable, labor-saving jack that can be used for both lifting and leveling. Background Technology
[0002] A jack is a mechanical device used to lift heavy objects. It is widely used in automobile repair, construction, equipment installation, and heavy object handling. Through mechanical or hydraulic principles, it converts a small operating force into a large lifting force, allowing heavy objects (such as vehicles, machinery, pianos, etc.) to be raised and lowered smoothly, facilitating maintenance, adjustment, or relocation.
[0003] The existing jacks have low precision in height adjustment, especially in scenarios such as moving a piano where multiple precise height adjustments are required. Students often need to adjust the jack height multiple times, which greatly reduces the efficiency of moving the piano. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a portable, labor-saving jack that can be used for both lifting and lowering, aiming to improve the problem that the existing jacks have low height adjustment accuracy and usually require multiple adjustments, which greatly reduces the efficiency of piano moving.
[0005] To achieve the above objectives, the present invention provides the following technical solution: A portable, labor-saving jack / lifting device includes a housing. Inside the housing is a rotating component one, one end of which is fixedly connected to a bevel gear one. A second rotating component is located at the tooth end of the bevel gear one, and the second rotating component is rotatably connected inside the housing. A support column is threadedly connected to the outer wall of the second rotating component, and a baffle is rotatably connected to its outer wall. The bottom end of the support column is abutted against the upper surface of the baffle, and the outer wall of the support column is slidably connected inside the housing. A limiting ring is fixedly connected to the outer wall of the first rotating component, and a limiting post is slidably connected inside the limiting ring. The outer wall of the limiting post is slidably connected inside the housing. A base is located on the lower surface of the housing.
[0006] Preferably, the rotating assembly includes a connecting post, which is rotatably connected to the inside of the housing. One end of the connecting post is fixedly connected to a handle, and the other end of the connecting post is fixedly connected to the inside of the bevel gear. The outer wall of the connecting post is fixedly connected to the inside of the limiting ring.
[0007] Preferably, the rotating assembly two includes a bevel gear two, the tooth end of the bevel gear one is meshed with the tooth end of the bevel gear two, a threaded rod is fixedly connected inside the bevel gear two, the threaded rod is rotatably connected inside the housing, the outer wall of the threaded rod is threadedly connected inside the support column, and the outer wall of the threaded rod is rotatably connected inside the baffle.
[0008] Preferably, a connecting block one is fixedly connected to the side wall of the outer shell, a fixing plate is slidably connected inside the connecting block one, a connecting block two is fixedly connected to the lower surface of the fixing plate, the upper surface of the connecting block two is attached to the lower surface of the connecting block one, the outer wall of the connecting block two is fixedly connected to the outer wall of the base, a sliding component is provided inside the fixing plate, a connecting block three is slidably connected to the outer wall of the sliding component, the outer wall of the connecting block three is provided on the upper surface of the connecting block one, a spring is provided at one end of the sliding component, and the spring is provided inside the connecting block three.
[0009] Preferably, the sliding assembly includes a sliding column, the outer wall of which is slidably connected to the inside of the fixed plate, a connecting column two is fixedly connected to the outer wall of the sliding column, the outer walls of the sliding column and the connecting column two are slidably connected to the inside of the connecting block three, and one end of the sliding column is disposed on the outer wall of the spring.
[0010] Preferably, the spring is made of a nickel alloy.
[0011] Preferably, the connecting block three has a sliding groove inside, and the connecting column two is slidably connected to the inside of the connecting block three through the sliding groove.
[0012] Preferably, the outer wall of the baffle is fixedly connected to the inside of the housing, and the bevel gear is rotatably connected to the inside of the housing.
[0013] This utility model has the following beneficial effects: 1. In this utility model, rotating the handle drives the connecting column one to rotate, which in turn drives the bevel gear one to rotate. The bevel gear two will rotate under the drive of the bevel gear one, which in turn drives the threaded rod to rotate. When the threaded rod rotates, it will drive the support column to move up and down. When the support column reaches the required height, the limit pin can be inserted to fix the position. Through the rotation of the bevel gear one, bevel gear two and threaded rod, the height of the support column can be precisely adjusted, eliminating the need for students to adjust the height of the support column multiple times, and greatly improving the efficiency of piano handling.
[0014] 2. In this utility model, by pulling the second connecting column, the sliding column is driven to slide inside the third connecting block, further compressing the spring. After the second connecting column continues to slide a certain distance, the second connecting column is rotated to fix it inside the third connecting block, and the sliding column is further removed from the inside of the fixed plate, thus removing the limitation on the fixed plate, thereby achieving the effect of quickly removing the base and facilitating the carrying of the jack. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of a portable, labor-saving, dual-purpose jack for both lifting and lowering, as proposed in this utility model. Figure 2This is a partial structural diagram of the limiting ring of a portable, labor-saving, dual-purpose jack for both lifting and lowering, as proposed in this utility model. Figure 3 This is a partial structural diagram of the bevel gear of a portable, labor-saving, dual-purpose jack for both lifting and lowering, as proposed in this utility model. Figure 4 for Figure 1 Enlarged diagram of point A in the middle.
[0016] Legend: 1. Outer shell; 2. Connecting post one; 3. Handle; 4. Bevel gear one; 5. Bevel gear two; 6. Threaded rod; 7. Support post; 8. Baffle; 9. Limiting ring; 10. Limiting post; 11. Connecting block one; 12. Fixing plate; 13. Connecting block two; 14. Base; 15. Connecting block three; 16. Sliding post; 17. Connecting post two; 18. Spring; 19. Slide groove. Detailed Implementation
[0017] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0018] Reference Figures 1-3 The present invention provides an embodiment of a portable, labor-saving jack for both lifting and lowering, comprising a housing 1, a rotating component 1 inside the housing 1, a bevel gear 4 fixedly connected to one end of the rotating component 1, a rotating component 2 rotatably connected to the tooth end of the bevel gear 4, a support column 7 threadedly connected to the outer wall of the rotating component 1, a baffle 8 rotatably connected to the outer wall of the rotating component 1, the bottom end of the support column 7 abutting the upper surface of the baffle 8, the outer wall of the support column 7 slidably connected to the inside of the housing 1, a limiting ring 9 fixedly connected to the outer wall of the rotating component 1, a limiting column 10 slidably connected inside the limiting ring 9, the outer wall of the limiting column 10 slidably connected to the inside of the housing 1, and a base 14 provided on the lower surface of the housing 1. Specifically, the handle 3 has an internal hole for easy insertion of a lever, allowing the user to rotate the first rotating component. When the first rotating component rotates, the fixed action of the first rotating component and the bevel gear 4 causes the bevel gear 4 to rotate, which in turn drives the second rotating component. The rotation of the second rotating component moves the support column 7. Once the support column 7 reaches the appropriate height, the limiting column 10 is inserted into the housing 1 through a hole in the limiting ring 9, thus fixing the height of the support column 7. Through the combined action of the first rotating component, the bevel gear 4, the second rotating component, the limiting ring 9, and the limiting column 10, the force of the first rotating component is converted into the vertical lifting force of the support column 7. This significantly reduces operational intensity while improving the accuracy of height adjustment, overcoming the need for frequent up-and-down pressing of the handle 3 required by traditional jacks. This makes it easier for students to move valuable items such as pianos.
[0019] Reference Figures 1-3 Rotating component one includes a connecting post 2, which is rotatably connected to the inside of the housing 1. One end of the connecting post 2 is fixedly connected to a handle 3, and the other end of the connecting post 2 is fixedly connected to the inside of a bevel gear 4. The outer wall of the connecting post 2 is fixedly connected to the inside of a limiting ring 9. Rotating component two includes a bevel gear 5, the tooth end of the bevel gear 4 is meshed with the tooth end of the bevel gear 5, a threaded rod 6 is fixedly connected to the inside of the bevel gear 5, the threaded rod 6 is rotatably connected to the inside of the housing 1, the outer wall of the threaded rod 6 is threadedly connected to the inside of a support post 7, and the outer wall of the threaded rod 6 is rotatably connected to the inside of a baffle 8. Specifically, when the handle 3 is turned, the fixed action between the handle 3 and the connecting column 2 will cause the connecting column 2 to rotate, which in turn will cause the bevel gear 4 to rotate. When the bevel gear 4 rotates, it will cause the bevel gear 5 to rotate, which in turn will cause the threaded rod 6 to rotate. When the threaded rod 6 rotates, the threaded connection between the threaded rod 6 and the support column 7 will cause the support column 7 to rise or fall.
[0020] Reference Figure 1 and Figure 4 A connecting block 11 is fixedly connected to the side wall of the outer shell 1. A fixing plate 12 is slidably connected inside the connecting block 11. A connecting block 2 13 is fixedly connected to the lower surface of the fixing plate 12. The upper surface of the connecting block 2 13 is attached to the lower surface of the connecting block 11. The outer wall of the connecting block 2 13 is fixedly connected to the outer wall of the base 14. A sliding component is provided inside the fixing plate 12. A connecting block 3 15 is slidably connected to the outer wall of the sliding component. The outer wall of the connecting block 3 15 is located on the upper surface of the connecting block 11. A spring 18 is provided at one end of the sliding component. The spring 18 is located inside the connecting block 3 15. Specifically, when it is necessary to disassemble the base 14, first pull the sliding component so that it slides inside the connecting block 3 15. While the sliding component slides, it will cooperate with the connecting block 3 15 to compress the spring 18. When the sliding component slides to the appropriate position, rotate the sliding component to fix it inside the connecting block 3 15. Then pull the base 14 down to drive the fixing plate 12 to slide out from inside the connecting block 1 11, thereby achieving quick disassembly of the base 14, reducing the length of the jack, and making it easier to carry.
[0021] Reference Figure 1 , Figure 3 and Figure 4 The sliding assembly includes a sliding column 16, the outer wall of which is slidably connected to the inside of the fixed plate 12. A connecting column 17 is fixedly connected to the outer wall of the sliding column 16. The outer walls of the sliding column 16 and the connecting column 17 are slidably connected to the inside of the connecting block 15. One end of the sliding column 16 is located on the outer wall of the spring 18. The spring 18 is made of nickel alloy. A groove 19 is provided inside the connecting block 15, and the connecting column 17 is slidably connected to the inside of the connecting block 15 through the groove 19. The outer wall of the baffle 8 is fixedly connected to the inside of the outer shell 1, and the bevel gear 4 is rotatably connected to the inside of the outer shell 1. Specifically, firstly, pulling the second connecting column 17 moves the sliding column 16. When the sliding column 16 moves, it cooperates with the third connecting block 15 to compress the spring 18. After the second connecting column 17 moves to the appropriate position, the second connecting column 17 is rotated to fix it inside the third connecting block 15. Then, the sliding column 16 is slid out from inside the fixed plate 12, thus removing the limitation on the fixed plate 12. Since the spring 18 is made of nickel alloy, the excellent resilience and fatigue resistance of nickel alloy ensure that the spring 18 still has good resilience performance after long-term use.
[0022] Working principle: By rotating the handle 3, the connecting column 2 rotates inside the outer shell 1, which in turn drives the bevel gear 4 to rotate. When the bevel gear 4 rotates, it drives the bevel gear 5 to rotate, which in turn drives the threaded rod 6 to rotate. When the threaded rod 6 rotates, it drives the support column 7 to move up and down. When the support column 7 moves to the appropriate position, the limiting column 10 is inserted into the inner shell 1 through the hole opened inside the limiting ring 9 to lock the height of the support column 7. Through the cooperation between the connecting column 2, handle 3, bevel gear 4, bevel gear 5, threaded rod 6, limiting ring 9 and limiting column 10, the force of rotating the handle 3 is converted into the vertical lifting force of the support column 7, which greatly reduces the difficulty for students to use. By pulling the second connecting column 17, the sliding column 16 is driven to slide inside the third connecting block 15. When the sliding column 16 slides inside the third connecting block 15, it will cooperate with the third connecting block 15 to compress the spring 18. When the second connecting column 17 slides to the appropriate position, the second connecting column 17 is rotated so that it is fixed inside the third connecting block 15 through the slide groove 19. This further drives the sliding column 16 to move out of the fixed plate 12. Then, the base 14 is pulled down to drive the fixed plate 12 to slide out of the first connecting block 11, thereby achieving the effect of disassembling the base 14 and making it convenient for the user to carry the jack.
[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A portable, labor-saving, dual-purpose jack for both lifting and leveling, comprising a housing (1), characterized in that: The outer shell (1) is provided with a rotating component one, one end of which is fixedly connected to a bevel gear one (4), and the tooth end of the bevel gear one (4) is provided with a rotating component two. The rotating component two is rotatably connected to the inside of the outer shell (1). The outer wall of the rotating component two is threadedly connected to a support column (7), and the outer wall of the rotating component two is rotatably connected to a baffle (8). The bottom end of the support column (7) is attached to the upper surface of the baffle (8), and the outer wall of the support column (7) is slidably connected to the inside of the outer shell (1). The outer wall of the rotating component one is fixedly connected to a limiting ring (9), and the inside of the limiting ring (9) is slidably connected to a limiting column (10). The outer wall of the limiting column (10) is slidably connected to the inside of the outer shell (1). The lower surface of the outer shell (1) is provided with a base (14).
2. The portable, labor-saving, dual-purpose lifting and jack according to claim 1, characterized in that: The rotating assembly includes a connecting post (2), which is rotatably connected to the inside of the outer shell (1). One end of the connecting post (2) is fixedly connected to a handle (3), and the other end of the connecting post (2) is fixedly connected to the inside of a bevel gear (4). The outer wall of the connecting post (2) is fixedly connected to the inside of a limiting ring (9).
3. The portable, labor-saving, dual-purpose lifting and jack according to claim 1, characterized in that: The rotating assembly two includes a bevel gear two (5), the tooth end of the bevel gear one (4) is meshed with the tooth end of the bevel gear two (5), a threaded rod (6) is fixedly connected inside the bevel gear two (5), the threaded rod (6) is rotatably connected inside the outer shell (1), the outer wall of the threaded rod (6) is threadedly connected inside the support column (7), and the outer wall of the threaded rod (6) is rotatably connected inside the baffle (8).
4. The portable, labor-saving, dual-purpose lifting and jack according to claim 1, characterized in that: The side wall of the outer shell (1) is fixedly connected to a connecting block one (11), and a fixing plate (12) is slidably connected inside the connecting block one (11). The lower surface of the fixing plate (12) is fixedly connected to a connecting block two (13), and the upper surface of the connecting block two (13) is attached to the lower surface of the connecting block one (11). The outer wall of the connecting block two (13) is fixedly connected to the outer wall of the base (14). A sliding component is provided inside the fixing plate (12), and a connecting block three (15) is slidably connected to the outer wall of the sliding component. The outer wall of the connecting block three (15) is located on the upper surface of the connecting block one (11). A spring (18) is provided at one end of the sliding component, and the spring (18) is located inside the connecting block three (15).
5. A portable, labor-saving, dual-purpose lifting and jack according to claim 4, characterized in that: The sliding assembly includes a sliding column (16), the outer wall of which is slidably connected to the inside of the fixed plate (12), and a connecting column two (17) is fixedly connected to the outer wall of the sliding column (16). The outer walls of the sliding column (16) and the connecting column two (17) are slidably connected to the inside of the connecting block three (15). One end of the sliding column (16) is disposed on the outer wall of the spring (18).
6. A portable, labor-saving, dual-purpose lifting and jack according to claim 5, characterized in that: The spring (18) is made of nickel alloy.
7. A portable, labor-saving, dual-purpose jack for both lifting and leveling, as described in claim 5, characterized in that: The connecting block three (15) has a sliding groove (19) inside, and the connecting column two (17) is slidably connected to the inside of the connecting block three (15) through the sliding groove (19).
8. A portable, labor-saving, dual-purpose jack for both lifting and leveling, as described in claim 1, characterized in that: The outer wall of the baffle (8) is fixedly connected to the inside of the outer shell (1), and the bevel gear (4) is rotatably connected to the inside of the outer shell (1).