Ultra-low horizontal jack
By designing an ultra-low-position horizontal jack and using components such as universal wheels, directional wheels, adjustable-angle hydraulic cylinders, and high-precision levels, the problems of poor adaptability and insufficient stability of jacks in low-position operations have been solved, achieving stable lifting and flexible adjustment in narrow spaces and complex working conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HAIYAN HAIDING MASCH CO LTD
- Filing Date
- 2025-05-13
- Publication Date
- 2026-04-21
AI Technical Summary
Existing jacks have poor adaptability to low-level operations, insufficient stability, and limited adjustment functions, making them difficult to meet the needs of complex working conditions.
An ultra-low-position horizontal jack was designed, which uses components such as casters, directional casters, adjustable horizontal hydraulic cylinders, linkage frame, adjustment components and high-precision level to achieve flexible adjustment and stable support, and adapt to narrow spaces and complex working conditions.
Stable lifting operations in extremely low spaces improve the versatility and ease of use of jacks, ensure balance and stability during operations, and avoid safety hazards such as tilting and tipping.
Smart Images
Figure CN224147634U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of jack technology, specifically to an ultra-low horizontal jack. Background Technology
[0002] In utility model patent application CN218754772U, published on March 28, 2023, entitled "Ultra-Low-Position Horizontal Jack," this utility model discloses an ultra-low-position horizontal jack, including a base assembly, a hydraulic assembly, a lifting arm, and a bracket assembly. The base assembly has two wall panels, left and right. The upper part of the front portion of each wall panel has a concave notch, forming a flat insertion part. The upper edge of the insertion part has an outward-facing upward flange, and the lower edge of the insertion part has an outward-facing downward flange. This utility model flattens the front ends of the wall panels on both sides of the base assembly, reducing the height dimension to facilitate insertion under vehicles with ultra-low chassis. Simultaneously, the upward and downward flanges on the upper and lower edges of the wall panels provide reinforcement, meeting strength requirements while reducing the size and weight of the jack.
[0003] In the prior art, including the aforementioned patents, jacks are a common lifting tool widely used in many fields such as automobile repair, mechanical installation, and construction. In some space-constrained scenarios, traditional jacks are difficult to lift at low positions due to their relatively high height. Traditional jacks also have limited adjustment functions, making them difficult to adapt to the needs of complex working conditions. Therefore, it is necessary to design a horizontal jack that is ultra-low in position, highly stable, and has flexible adjustment functions. Utility Model Content
[0004] The purpose of this invention is to provide an ultra-low-position horizontal jack to solve the problems mentioned in the background art regarding the poor adaptability, insufficient stability, and limited adjustment functions of existing jacks in low-position operations.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an ultra-low-position horizontal jack, comprising a base, universal wheels mounted on the outer wall of the base, a directional wheel mounted on one side of the base, a lever bracket mounted inside the base, a handle connected to the top pivot of the lever bracket, a horizontal hydraulic cylinder connected to the side pivot of the lever bracket, a linkage frame connected to the output end pivot of the horizontal hydraulic cylinder, a connecting frame mounted on the top of the linkage frame, an upper lifting platform fixedly connected to the top of the connecting frame, an adjustment component mounted on the outer wall of the linkage frame, a level provided on the outer wall of the base, and a cover plate engaged with the top of the base.
[0006] Furthermore, the adjustment assembly includes a connecting rod, a sliding shaft, an electric telescopic rod, and a fixed shaft. The connecting rod is pivotally connected to the outer wall of the linkage frame, the sliding shaft is slidably connected to the outer wall of the connecting rod, the electric telescopic rod is mounted on the outer wall of the sliding shaft, and a fixed shaft is mounted on one end of the electric telescopic rod.
[0007] Furthermore, the outer wall of the connecting rod is provided with a sliding groove, and the sliding shaft passes through the sliding groove. The electric telescopic rod is connected to the outer wall of the linkage frame through a fixed shaft.
[0008] Furthermore, both the omnidirectional wheels and the directional wheels are connected to the outer wall of the base via shock-absorbing bushings, and the pivot shaft connecting the horizontal hydraulic cylinder and the lever bracket is an adjustable omnidirectional pivot shaft.
[0009] Furthermore, the linkage frame and the connecting frame are fixedly connected by detachable high-strength bolts, and the linkage frame and the adjustment assembly are fixedly connected by detachable high-strength bolts.
[0010] Furthermore, the level is an electronic level, and the level has an angle measurement accuracy of ±0.1°.
[0011] Furthermore, the surface of the handle is provided with an anti-slip rubber sleeve, and the upper surface of the top platform is provided with a layer of wear-resistant rubber pad.
[0012] Compared with the prior art, the beneficial effects of this utility model are: this ultra-low position horizontal jack is reasonable and has the following advantages:
[0013] (1) This utility model uses an ultra-low horizontal jack with a scientific and reasonable structural design that fully considers various space-constrained work scenarios. Through its unique structure, it can stably carry out lifting operations at extremely low spatial heights. Whether it is under a narrow vehicle chassis or a small area tightly surrounded by equipment, it can easily cope with the situation, greatly breaking through the limitations of traditional jacks. At the same time, the ingenious setting of the adjustment components allows the jack to be more than capable in the face of complex and ever-changing actual working conditions. It can make precise and flexible adjustments to the pitch angle and extension length of the linkage frame according to the shape of the object being lifted, such as a cuboid, cylinder, or irregular body, as well as the position of the object, such as a narrow corner, a high place, or a low place. This jack can be adapted to large equipment on industrial production lines or in the working environment, greatly improving the versatility and ease of use of the jack.
[0014] (2) By widening the base, the jack can always remain stable during operation. Multiple stability protection mechanisms are designed. First, by widening the base, the contact area with the ground is significantly increased, which effectively reduces the pressure per unit area and greatly improves the support stability. At the same time, the built-in high-precision level and flexible adjustable components allow users to monitor and adjust the horizontal state of the jack in real time and accurately, ensuring the balance during operation. In terms of moving parts, the universal wheels and directional wheels are connected by shock-absorbing bushings, which can effectively absorb the vibration generated during movement and reduce the impact of bumps caused by uneven road surfaces. In addition, the horizontal hydraulic cylinder and the lever support are connected by an adjustable angle universal shaft, which can ensure that the jack always maintains the best mechanical fit angle with the working surface under any complex working conditions, further improving the stability of the jack during use and effectively avoiding safety hazards such as tilting and tipping. Attached Figure Description
[0015] Figure 1 This is an overall drawing of the present utility model;
[0016] Figure 2 This is a front view of the present utility model;
[0017] Figure 3 This is a top view of the present invention;
[0018] Figure 4 This is a side view of the present invention;
[0019] Figure 5 This is a schematic diagram of the structure of the horizontal hydraulic cylinder and adjusting assembly of this utility model.
[0020] In the diagram: 1. Base; 2. Casters; 3. Fixed casters; 4. Lever bracket; 5. Handle; 6. Horizontal hydraulic cylinder; 7. Linkage frame; 8. Connecting frame; 9. Top platform; 10. Adjustment assembly; 1001. Connecting rod; 1002. Sliding shaft; 1003. Electric telescopic rod; 1004. Fixed shaft; 11. Level; 12. Cover plate. Detailed Implementation
[0021] 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.
[0022] Please see Figure 1-5 The present invention provides a technical solution as follows:
[0023] Example 1:
[0024] An ultra-low horizontal jack includes a base 1, universal wheels 2 installed on the outer wall of the base 1, a directional wheel 3 installed on one side of the base 1, a lever bracket 4 installed inside the base 1, a handle 5 connected to the top pivot of the lever bracket 4, a horizontal hydraulic cylinder 6 connected to one side pivot of the lever bracket 4, a linkage frame 7 connected to the output end pivot of the horizontal hydraulic cylinder 6, a connecting frame 8 installed on the top of the linkage frame 7, an upper lifting platform 9 fixedly connected to the top of the connecting frame 8, an adjustment component 10 installed on the outer wall of the linkage frame 7, a level 11 installed on the outer wall of the base 1, and a cover plate 12 snapped onto the top of the base 1.
[0025] The above structure is operated by the operator holding the handle 5 and moving the handle 5 up and down, which drives the horizontal hydraulic cylinder 6 to work. The horizontal hydraulic cylinder 6 pushes the linkage frame 7 to rise, and through the connecting frame 8, it drives the upper platform 9 to lift the heavy object smoothly.
[0026] Furthermore, the internal components of the adjustment assembly 10 include a connecting rod 1001, a sliding shaft 1002, an electric telescopic rod 1003, and a fixed shaft 1004. The connecting rod 1001 is pivotally connected to the outer wall of the linkage frame 7. The sliding shaft 1002 is slidably connected to the outer wall of the connecting rod 1001. The electric telescopic rod 1003 is installed on the outer wall of the sliding shaft 1002. The fixed shaft 1004 is installed at one end of the electric telescopic rod 1003. A groove is provided on the outer wall of the connecting rod 1001, and the sliding shaft 1002 passes through the groove. The electric telescopic rod 1003 is connected to the outer wall of the linkage frame 7 through the fixed shaft 1004.
[0027] The above structure activates the electric telescopic rod (1003) of the adjustment component (10) through an external controller. The electric telescopic rod (1003) pushes the sliding shaft (1002) to slide in the groove of the connecting rod (1001), and at the same time drives the connecting rod (1001) to rotate, thereby adjusting the connecting frame 8.
[0028] Furthermore, both the omnidirectional wheels 2 and the directional wheels 3 are connected to the outer wall of the base 1 via shock-absorbing bushings. The pivot shaft connecting the horizontal hydraulic cylinder 6 and the lever bracket 4 is an adjustable omnidirectional pivot shaft. The linkage frame 7 and the connecting frame 8 are fixedly connected by detachable high-strength bolts, and the linkage frame 7 and the adjusting assembly 10 are fixedly connected by detachable high-strength bolts. The level 11 is an electronic level, and the level 11 has an angle measurement accuracy of ±0.1°.
[0029] By observing the level 11, if the base 1 is tilted, the position can be adjusted using the casters 2 until the level 11 shows that the base 1 is level.
[0030] Furthermore, the surface of the handle 5 is equipped with an anti-slip rubber sleeve, and the upper surface of the top platform 9 is provided with a layer of wear-resistant rubber pad.
[0031] Working Principle: When using this ultra-low horizontal jack, first, move the jack to a suitable position below the object to be lifted using the casters 2 and directional wheels 3. Since the casters 2 and directional wheels 3 are connected to the base 1 via shock-absorbing bushings, the impact of ground bumps on the jack is effectively reduced during movement, improving stability. When adjusting the jack's level, observe the electronic level 11 on the outer wall of the base 1, which measures the tilt angle of the base 1 in real time with a high precision of ±0.1°. If tilting is detected, the casters 2 can be used to move the jack, activating the adjustment assembly 10. The electric telescopic rod 1003 then begins operation, pushing the sliding shaft 1002 to slide within the groove of the connecting rod 1001, simultaneously causing the connecting rod 1001 to rotate around its connecting shaft with the linkage frame 7. The position of the connecting frame 8 is adjusted by moving the lever 5. After the level is adjusted, the operator holds the handle 5. Since the surface of the handle 5 is equipped with a non-slip rubber sleeve, it can increase the friction and prevent the hand from slipping during operation. By moving the handle 5 up and down, the handle 5 rotates around the pivot at the top of the lever bracket 4, which drives the lever bracket 4 to move. The lever bracket 4 then drives the horizontal hydraulic cylinder 6 to work. The output end of the horizontal hydraulic cylinder 6 pushes the linkage frame 7 to rise. Since the pivot connecting the horizontal hydraulic cylinder 6 and the lever bracket 4 is an adjustable universal pivot, the angle of the horizontal hydraulic cylinder 6 can be finely adjusted according to the actual use requirements to ensure the effective transmission of the lifting force.
[0032] Secondly, when the linkage frame 7 rises, the upper platform 9 rises synchronously through the connecting frame 8. The wear-resistant rubber pad on the upper surface of the upper platform 9 contacts the object being lifted, which can increase friction to prevent slippage and also provide cushioning protection for the surface of the object being lifted. When the required lifting height is reached, stop pulling the handle 5 to complete the lifting operation.
[0033] Finally, when it is necessary to lower the object being lifted, the reverse operation causes the horizontal hydraulic cylinder 6 to retract, and the linkage frame 7, connecting frame 8 and upper lifting platform 9 to descend until they return to their initial state.
[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. An ultra-low horizontal jack comprising a base (1), characterized in that: The outer wall of the base (1) is equipped with casters (2), one side of the base (1) is equipped with a directional wheel (3), the inside of the base (1) is equipped with a lever bracket (4), the top shaft of the lever bracket (4) is connected to a handle (5), one side shaft of the lever bracket (4) is connected to a horizontal hydraulic cylinder (6), the output shaft of the horizontal hydraulic cylinder (6) is connected to a linkage frame (7), the top of the linkage frame (7) is equipped with a connecting frame (8), the top of the connecting frame (8) is fixedly connected to an upper platform (9), the outer wall of the linkage frame (7) is equipped with an adjustment component (10), the outer wall of the base (1) is equipped with a level (11), and the top of the base (1) is engaged with a cover plate (12).
2. An ultra-low horizontal jack as claimed in claim 1, characterized in that: The adjustment assembly (10) includes a connecting rod (1001), a sliding shaft (1002), an electric telescopic rod (1003), and a fixed shaft (1004). The connecting rod (1001) is connected to the outer wall of the linkage frame (7) by a rotating shaft. The sliding shaft (1002) is slidably connected to the outer wall of the connecting rod (1001). The electric telescopic rod (1003) is installed on the outer wall of the sliding shaft (1002). The fixed shaft (1004) is installed at one end of the electric telescopic rod (1003).
3. An ultra-low horizontal jack as claimed in claim 2, characterized in that: The outer wall of the connecting rod (1001) is provided with a sliding groove, and the sliding shaft (1002) passes through the sliding groove. The electric telescopic rod (1003) is connected to the outer wall of the linkage frame (7) through the fixed shaft (1004).
4. The ultra-low horizontal jack of claim 1, wherein: The universal wheel (2) and the directional wheel (3) are both connected to the outer wall of the base (1) through a shock-absorbing bushing. The shaft connecting the horizontal hydraulic cylinder (6) and the lever bracket (4) is an adjustable universal shaft.
5. The ultra-low horizontal jack of claim 1, wherein: The linkage frame (7) and the connecting frame (8) are fixedly connected by detachable high-strength bolts, and the linkage frame (7) and the adjusting assembly (10) are fixedly connected by detachable high-strength bolts.
6. An ultra-low horizontal jack as defined in claim 1, wherein: The level (11) is an electronic level, and the level (11) has an angle measurement accuracy of ±0.1°.
7. The ultra-low horizontal jack of claim 1, wherein: The surface of the handle (5) is provided with an anti-slip rubber sleeve, and the upper surface of the upper platform (9) is provided with a layer of wear-resistant rubber pad.