Jack with four-wheel adjusting device
By designing a four-wheel adjustment device on the jack, the up and down adjustment and overall lifting of the wheels is achieved by using screws and handwheels, the problems of poor stability and insufficient travel of the jack on uneven road surfaces are solved, the safety and use range are improved, and the risk of damage is reduced.
Patent Information
- Application Number
- CN202421726270.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-07-19
AI Technical Summary
The four wheels of the existing jack are fixed and cannot be adjusted according to the needs of the site, resulting in poor stability on uneven road surfaces, posing safety hazards, and when the stroke is insufficient, the high-stroke jack needs to be replaced to increase the cost of use.
A jack with four-wheel adjustment device is designed. By setting up a screw and a handwheel, the up and down adjustment of the wheel is achieved, so that all the four wheels of the jack can touch the ground, improve overall stability, and rotate the handwheel to move the wheel downward, increasing the stroke of the jack.
By adjusting the wheels, the overall stability and safety of the jack are improved, the scope of use is increased, and the jack is effectively protected from scratches by road bumps.
Smart Images
Figure CN223032969U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a jack with a four-wheel adjusting device, belonging to the technical field of jacks. Background Art
[0002] The four wheels of the existing ordinary jacks are fixed and cannot be adjusted in height according to on-site needs. Especially when encountering uneven road surfaces, some of the four wheels of the jack may not touch the ground, resulting in poor overall stability and potential safety hazards. In addition, the bottom of the existing ordinary jack is not high from the ground and is easily scratched by protruding objects on the top oil pump when dragged on an uneven road surface, causing the jack to be damaged and unable to be used normally. At the same time, when the stroke is insufficient during use, only a jack with a higher stroke can be replaced, increasing the use cost. Content of the Utility Model
[0003] In order to solve the above technical problems existing in the prior art, the utility model provides a jack with a four-wheel adjusting device. By setting the four-wheel adjusting device, when used on an uneven road surface, one of the wheels can be adjusted to make all four wheels of the jack touch the ground, improving the overall stability and making it safer to use; or the handwheel can be rotated clockwise to move the wheel downward, raising the entire jack and increasing the stroke of the jack, thus expanding the scope of use.
[0004] The technical solution adopted by the utility model is as follows:
[0005] A jack with a four-wheel adjusting device, characterized in that it includes a jack body, the jack body includes side plates on both sides and an oil pump component, a lifting arm component, a tray and a handle arranged on the side plates. The rear part of the lifting arm component is pivotally connected between the two side plates through a lifting arm shaft, and the front part of the lifting arm component is provided with the tray; the handle is arranged at the rear part of the side plate through a press button and is connected to the oil control part of the oil pump component. The front end and the rear end of the side plate are respectively provided with a front wheel and a rear wheel. It is characterized in that the front wheel and the rear wheel are respectively movably arranged on a mounting frame through a wheel frame, the mounting frame is mounted on the side plate, a screw hole penetrating through the mounting frame up and down is opened on the mounting frame, a lead screw is arranged in the screw hole, a handwheel is mounted at the top end of the lead screw, and the bottom end of the lead screw passes through the screw hole and is connected to the wheel frame. By rotating the handwheel, the lead screw is driven to move downward, realizing the downward movement of the wheel.
[0006] Further, the screw hole has an internal thread, and the lead screw has an external thread adapted to the internal thread.
[0007] Furthermore, a bearing ring is provided on the top of the wheel carrier. The bearing ring includes a straight middle section and two convex sections with an arc shape on both sides. Steel balls are provided between the two convex sections and the top of the wheel carrier, and the outer surfaces of the steel balls are in contact with the convex sections and the top of the wheel carrier respectively.
[0008] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0009] 1. The present utility model realizes the overall lifting of the jack by setting a lead screw and a hand wheel, increasing the stroke of the jack and expanding its application range.
[0010] 2. When the present utility model is used on an uneven road surface, the overall stability can be improved by adjusting one of the wheels so that all four wheels of the jack are in contact with the ground, making it safer to use.
[0011] 3. The overall structure of the present utility model is simple and easy to operate.
[0012] 4. The present utility model sets a lead screw and a hand wheel to realize the overall lifting of the jack. When dragging the jack, the bottom, especially the key components of the oil pump, is not easily scratched by road bumps, effectively protecting the jack. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is the overall structural schematic diagram of the jack of the present utility model in the lowest state.
[0014] Figure 2 is Figure 1 the top view of
[0015] Figure 3 is the overall structural schematic diagram of the jack of the present utility model in the highest state.
[0016] Figure 4 is Figure 3 the top view of DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] The following details the specific embodiments of the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustration and explanation of the embodiments of the present utility model, and are not intended to limit the embodiments of the present utility model.
[0018] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.
[0019] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present utility model.
[0020] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0021] In the present utility model, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0022] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.
[0023] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.
[0024] The present utility model will be described in detail below with reference to the drawings and in conjunction with exemplary embodiments.
[0025] Reference Figures 1 to 4 , a jack with a four-wheel adjustment device of the present utility model includes a jack body, the jack body includes side plates on both sides and an oil pump component, a lifting arm component, a tray, and a handle arranged on the side plates. The rear part of the lifting arm component is pivotally connected between the two side plates through a lifting arm shaft, and the tray is installed at the front part of the lifting arm component; the handle is arranged at the rear part of the side plate through a pressing hand and is connected to the oil control part of the oil pump component. A front wheel 1 and a rear wheel are respectively arranged at the front end and the rear end of the side plate. The front wheel 1 and the rear wheel are respectively movably arranged on a mounting bracket 2 through a wheel bracket. The mounting bracket 2 is installed on the side plate. A screw hole penetrating the mounting bracket up and down is opened on the mounting bracket 2. A screw rod 3 is arranged in the screw hole. A hand wheel 4 is installed at the top end of the screw rod 3. The bottom end of the screw rod 3 passes through the screw hole and is connected to the wheel bracket. By rotating the hand wheel 4, the screw rod 3 is driven to move downward, realizing the downward movement of the wheels.
[0026] In one embodiment, the screw hole has an internal thread, and the screw rod 3 has an external thread adapted to the internal thread.
[0027] In one embodiment, a bearing ring 6 is arranged at the top of the wheel bracket. The bearing ring 6 includes a straight middle section and two convex arc-shaped sections on both sides. Steel balls 5 are arranged between the two convex sections and the top of the wheel bracket. The outer surfaces of the steel balls are respectively in contact with the convex sections and the top of the wheel bracket.
[0028] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.
Claims
1. A jack with a four-wheel adjustment device, characterized in that: The jack body comprises side panels on both sides and an oil pump component, a lifting arm component, a tray and a handle arranged on the side panels, the rear part of the lifting arm component is pivotally connected between the two side panels through a lifting arm shaft, and the front part of the lifting arm component is installed with the tray; the handle is arranged at the rear part of the side panel through a pressing hand, and is connected with the oil control part of the oil pump component, and the front and rear ends of the side panels are respectively provided with front wheels and rear wheels, and the character is characterized in that the front wheels and the rear wheels are respectively movably arranged on a mounting frame through a wheel frame, and the mounting frame is installed on the side panel, and a screw hole that passes through the mounting frame up and down is provided on the mounting frame, a screw rod is arranged in the screw hole, a hand wheel is installed on the top end of the screw rod, and the bottom end of the screw rod is connected to the wheel frame after passing through the screw hole, and the screw rod is driven to move downward by rotating the hand wheel to realize the downward movement of the wheel.
2. A jack with a four-wheel adjustment device as claimed in claim 1, characterized in that: The screw hole has an internal thread, and the screw rod has an external thread matching the internal thread.
3. A jack with a four-wheel adjustment device as claimed in claim 1, characterized in that: A bearing ring is arranged on the top of the wheel frame, and the bearing ring includes a straight middle section and two arc-shaped raised sections. Steel balls are arranged between the raised sections on both sides and the top of the wheel frame, and the outer surfaces of the steel balls are in contact with the raised sections and the top of the wheel frame respectively.