High-strength rocker arm trailer jack
By designing the storage box storage chain and tray protection base on the rocker trailer jack, the problems of chain replacement and base wear are solved, and the convenience and service life of the equipment are improved.
Patent Information
- Application Number
- CN202422209460.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-10
AI Technical Summary
The traditional rocker arm trailer jack is inconvenient to replace in time when the chain is worn or broken, and the base is seriously worn, lacking an effective protective structure, which affects the life of the equipment and flexibility of use.
The storage box structure is designed to store fasteners and chains, and the square holes are connected to fixed blocks and screws to facilitate chain replacement; the sleeve plate and trapezoidal groove structure reduces base wear, bolt connection enhances stability, and the universal wheel combination enhances stability.
It realizes convenient chain replacement, reduces base wear, extends equipment life, and improves usage flexibility and stability.
Smart Images
Figure CN223150163U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of jacks, and particularly relates to a high-strength swing arm trailer jack. Background Art
[0002] A jack refers to a light lifting device that uses a rigid lifting member as a working device to lift a heavy object within a small stroke through a top bracket or a bottom pawl. Jacks are mainly used in factories, mines, transportation and other departments for vehicle repair and other lifting and supporting work. As an important part of the machinery manufacturing industry, swing arm trailer jacks are widely used for mobile lifting, especially suitable for the repair industry of the transportation industry such as automobiles and tractors. Their delicate design, small size, light weight, easy operation, time-saving and labor-saving features not only improve work efficiency but also reduce labor intensity and costs.
[0003] At present, the following problems exist when using the swing arm trailer jacks on the market:
[0004] 1. When using traditional swing arm trailer jacks, fasteners are often needed to fix them to ensure their stability and safety. These fasteners usually use a chain connection method, and the other end of the chain is often directly fixed on the jack body. When the chain is severely worn due to long-term use or breaks due to accidental collision, it is often inconvenient to replace it in time, and it is more inconvenient to use.
[0005] 2. Traditional swing arm trailer jacks usually adopt a single fixed wheel structure. This design does enhance the support stability to a certain extent, but at the same time, it also exacerbates the wear of the jack base, reduces the service life of the equipment. When the wheel cracks or the bottom installation structure is damaged, due to the lack of an effective protection structure, the jack base is often difficult to be effectively protected and is prone to further damage, and the wheel is also inconvenient to replace, lacking a certain degree of flexibility. Content of the Utility Model
[0006] The purpose of the utility model is to provide a high-strength swing arm trailer jack to solve the technical problems raised in the background art.
[0007] To achieve the above purpose, the specific technical solution of the utility model is as follows: A high-strength swing arm trailer jack, including a jack body, a mounting member and a fastener. A base is provided at the bottom of the jack body. A storage box is provided outside the mounting member. One end of the fastener is installed with a chain. The fastener and the chain are placed in the storage box. A square hole is opened on the side surface of the storage box. A fixing block is provided outside the storage box. The fixing block is inserted and connected to the square hole. A through hole is opened on the surface of the fixing block. A screw is provided outside the fixing block. A threaded hole is opened on the surface of the storage box. The screw passes through the through hole and is threadedly connected to the threaded hole. The chain is installed and connected to the fixing block.
[0008] Preferably, a sleeve disc is provided outside the base, a wheel set is installed at the bottom of the sleeve disc, a trapezoidal groove is formed on the side surface of the base, a trapezoidal block is provided inside the sleeve disc, the trapezoidal block is clamped in the trapezoidal groove, a hole groove is provided inside the trapezoidal groove, a plug hole is formed on the surface of the sleeve disc, a bolt is provided outside the sleeve disc, and the bolt passes through the plug hole and is threadedly connected to the hole groove.
[0009] Preferably, a cover plate is provided on the top of the storage box, the cover plate is connected to the storage box through a rotating shaft, a groove is formed on the top of the storage box, a magnetic snap is provided on the bottom of the cover plate, and the magnetic snap is magnetically connected to the groove.
[0010] Preferably, the wheel set is composed of four universal wheels, a jack hole is formed on the surface of the mounting member, and the fastening member is inserted and connected to the jack hole.
[0011] Preferably, a support seat is provided on the top of the jack body, a top disc is installed on the top of the support seat, and a crank is installed on the side surface of the support seat.
[0012] Preferably, a sliding plate is provided on the side surface of the jack body, a sliding track is formed inside the sliding plate, a limiting hole is provided outside the mounting member, a limiting screw rod is provided outside the mounting member, and the limiting screw rod passes through the limiting hole and is connected to a nut.
[0013] The high-strength swing arm trailer jack of the present utility model has the following advantages:
[0014] 1. For this high-strength swing arm trailer jack, by providing a storage box outside the mounting member and installing a chain at one end of the fastening member, the fastening member and the chain are placed in the storage box. When the jack is not in use, the storage box is installed to store the fastening member and the chain, improving the convenience during use. By forming a square hole on the side surface of the storage box, providing a fixing block outside the storage box, inserting the fixing block into the square hole, forming a perforation on the surface of the fixing block, providing a screw outside the fixing block, and forming a screw hole on the surface of the storage box, the chain is installed and connected to the fixing block. When the chain is severely worn due to long-term use or breaks due to accidental collision, the chain can be replaced in time by disassembling the fixing block, which is more convenient during use.
[0015] 2. The high-strength swing arm trailer jack has a sleeve plate provided outside the base. A wheel set is installed at the bottom of the sleeve plate. A trapezoidal groove is formed on the side of the base, and a trapezoidal block is provided inside the sleeve plate so that the trapezoidal block is clamped in the trapezoidal groove. A hole groove is provided inside the trapezoidal groove, and a plug hole is formed on the surface of the sleeve plate. By providing a bolt outside the sleeve plate, the bolt passes through the plug hole and is threadedly connected to the hole groove to strengthen the connection of the structure. By installing the sleeve plate outside the jack base, the contact area between the base and the wheel set and the ground is reduced, the protection effect on the base is strengthened, the service life of the equipment is improved to a certain extent, and through the combined installation of the sleeve plate and the wheel set, when the wheel body bursts or the sleeve plate is damaged, it can be disassembled and replaced in time, improving the flexibility during use. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.
[0017] Figure 1 Schematic diagram of the overall structure of the present invention;
[0018] Figure 2 Schematic diagram of the storage box structure of the present invention;
[0019] Figure 3 For the present invention Figure 2 Enlarged view of part A;
[0020] Figure 4 Schematic diagram of the sleeve plate structure of the present invention;
[0021] Figure 5 Schematic diagram of the limit screw structure of the present invention.
[0022] Explanation of the marks in the figure: 1, jack body; 2, mounting part; 3, fastening part; 4, base; 5, storage box; 6, chain; 7, square hole; 8, fixed block; 9, perforation; 10, screw; 11, screw hole; 12, sleeve plate; 13, wheel set; 14, trapezoidal groove; 15, trapezoidal block; 16, hole groove; 17, plug hole; 18, bolt; 19, cover plate; 20, groove; 21, magnetic snap; 22, jack hole; 23, support seat; 24, top plate; 25, crank; 26, slide plate; 27, slideway; 28, limit hole; 29, limit screw; 30, nut. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.
[0024] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "length", "vertical", "horizontal", "top", "bottom", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the embodiments of the present invention 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. Therefore, it should not be construed as a limitation on the embodiments of the present invention.
[0025] 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 one or more of such features. In the description of the embodiments of the present invention, the meaning of "a plurality" is two or more unless otherwise specifically defined.
[0026] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.
[0027] The following disclosure provides many different embodiments or examples for implementing different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the embodiments of the present invention. In addition, the embodiments of the present invention may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed.
[0028] To better understand the purpose, structure, and function of the present invention, the following further describes in detail a high-strength rocker trailer jack of the present invention with reference to the drawings.
[0029] As Figures 1-5As shown in the figure, a high-strength swing-arm trailer jack of the present utility model includes a jack body 1, a mounting member 2 and a fastener 3. A base 4 is provided at the bottom of the jack body 1. A storage box 5 is provided outside the mounting member 2. One end of the fastener 3 is installed with a chain 6. The fastener 3 and the chain 6 are placed in the storage box 5. By installing the storage box 5, the fastener 3 and the chain 6 are stored when the jack is not in use, improving the convenience during use. A square hole 7 is opened on the side surface of the storage box 5. A fixing block 8 is provided outside the storage box 5. The fixing block 8 is inserted and connected to the square hole 7. A through hole 9 is opened on the surface of the fixing block 8. A screw 10 is provided outside the fixing block 8. A threaded hole 11 is opened on the surface of the storage box 5. The screw 10 passes through the through hole 9 and is threadedly connected to the threaded hole 11. The chain 6 is installed and connected to the fixing block 8. When the chain 6 is severely worn due to long-term use or breaks due to accidental collision, the chain 6 can be replaced in time by disassembling the fixing block 8, which is more convenient during use.
[0030] A sleeve disc 12 is provided outside the base 4. A wheel set 13 is installed at the bottom of the sleeve disc 12. A trapezoidal groove 14 is opened on the side surface of the base 4. A trapezoidal block 15 is provided inside the sleeve disc 12. The trapezoidal block 15 is clamped in the trapezoidal groove 14. A hole groove 16 is provided inside the trapezoidal groove 14. A plug hole 17 is opened on the surface of the sleeve disc 12. A bolt 18 is provided outside the sleeve disc 12. The bolt 18 passes through the plug hole 17 and is threadedly connected to the hole groove 16. By installing the sleeve disc 12 outside the jack base 4, the contact area between the base 4 and the wheel set 13 and the ground is reduced, enhancing the protection effect on the base 4. Moreover, the combined installation of the sleeve disc 12 and the wheel set 13 allows for timely disassembly and replacement when the wheel body bursts or the sleeve disc 12 is damaged, improving the flexibility during use.
[0031] A cover plate 19 is provided at the top of the storage box 5. The cover plate 19 is connected to the storage box 5 through a rotating shaft. A groove 20 is opened at the top of the storage box 5. By providing a magnetic snap 21 at the bottom of the cover plate 19, the magnetic snap 21 is magnetically connected to the groove 20 to cover the inside of the storage box 5, having a good protection effect.
[0032] The wheel set 13 is composed of four universal wheels. By opening a jack hole 22 on the surface of the mounting member 2, the fastener 3 is inserted and connected to the jack hole 22, improving the stability during use.
[0033] A support seat 23 is provided at the top of the jack body 1. A top disc 24 is installed at the top of the support seat 23. A crank 25 is installed on the side surface of the support seat 23, which is convenient for operation during use.
[0034] On the side of the jack body 1, there is a sliding plate 26. Inside the sliding plate 26, a slideway 27 is provided. On the outside of the mounting member 2, there is a limit hole 28, and a limit screw 29 is provided on the outside of the mounting member 2. The limit screw 29 passes through the limit hole 28 and is connected to a nut 30. The combination of the limit screw 29 and the slideway 27 increases the installation range of the mounting member 2 and facilitates the adjustment of detailed positions, enhancing the functionality during use.
[0035] The working principle of this high-strength rocker trailer jack: During use, the staff first aligns the mounting member 2 with the docking structure of the trailer, opens the cover plate 19 of the storage box 5, takes out the fastener 3 from the storage box 5, inserts it into the jacking hole 22 of the mounting member 2 for strengthening the fixation. Then, by rotating the crank 25, the jack is lifted or lowered for lifting operations. The staff installs a storage box 5 on the outside of the mounting member 2, installs a chain 6 at one end of the fastener 3, and places the fastener 3 and the chain 6 in the storage box 5. The installed storage box 5 stores the fastener 3 and the chain 6 when the jack is not in use, enhancing the convenience during use. By opening a square hole 7 on the side of the storage box 5, a fixing block 8 is provided on the outside of the storage box 5. The fixing block 8 is inserted into and connected to the square hole 7. A through hole 9 is opened on the surface of the fixing block 8, and a screw 10 is provided on the outside of the fixing block 8. A threaded hole 11 is opened on the surface of the storage box 5. The screw 10 passes through the through hole 9 and is threadedly connected to the threaded hole 11, and the chain 6 is installed and connected to the fixing block 8. When the chain 6 is severely worn due to long-term use or breaks due to accidental collision, the chain 6 can be replaced in time by disassembling the fixing block 8, which is more convenient during use. By providing a sleeve plate 12 on the outside of the base 4, a wheel set 13 is installed at the bottom of the sleeve plate 12, a trapezoidal groove 14 is opened on the side of the base 4, and a trapezoidal block 15 is provided on the inside of the sleeve plate 12, so that the trapezoidal block 15 is clamped in the trapezoidal groove 14. A hole groove 16 is provided inside the trapezoidal groove 14, and a plug hole 17 is opened on the surface of the sleeve plate 12. By providing a bolt 18 on the outside of the sleeve plate 12, the bolt 18 passes through the plug hole 17 and is threadedly connected to the hole groove 16 to strengthen the connection of the structure. By installing the sleeve plate 12 on the outside of the jack base 4, the contact area between the base 4, the wheel set 13 and the ground is reduced, enhancing the protection effect on the base 4 and improving the service life of the equipment to a certain extent. And through the combined installation of the sleeve plate 12 and the wheel set 13, when the wheel body bursts or the sleeve plate 12 is damaged, the staff can disassemble and replace it in time, enhancing the flexibility during use. When the installation position of the mounting member 2 needs to be adjusted, the staff can manually adjust the limit screw 29 on the mounting member 2, loosen the nut 30, and move the limit screw 29 up and down on the slideway 27 opened in the sliding plate 26 until the position is appropriate, and then tighten the nut 30 again.
[0036] It will be understood that the present utility model is described by way of some embodiments, and those skilled in the art will be aware that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the present utility model. Additionally, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.
Claims
1. A high-strength rocker trailer jack, comprising a jack body (1), a mounting member (2) and a fastener (3), wherein a base (4) is provided at the bottom of the jack body (1), and is characterized in that: A storage box (5) is provided on the outside of the mounting member (2). One end of the fastener (3) is installed with a chain (6). The fastener (3) and the chain (6) are placed inside the storage box (5). A square hole (7) is opened on the side surface of the storage box (5). A fixing block (8) is provided on the outside of the storage box (5). The fixing block (8) is inserted and connected to the square hole (7). A through hole (9) is opened on the surface of the fixing block (8). A screw (10) is provided on the outside of the fixing block (8). A screw hole (11) is opened on the surface of the storage box (5). The screw (10) passes through the through hole (9) and is threadedly connected to the screw hole (11). The chain (6) is installed and connected to the fixing block (8).
2. The high-strength rocker trailer jack according to claim 1, wherein: A sleeve plate (12) is provided on the outside of the base (4). A wheel set (13) is installed at the bottom of the sleeve plate (12). A trapezoidal groove (14) is opened on the side surface of the base (4). A trapezoidal block (15) is provided inside the sleeve plate (12). The trapezoidal block (15) is clamped in the trapezoidal groove (14). A hole groove (16) is provided inside the trapezoidal groove (14). A plug hole (17) is opened on the surface of the sleeve plate (12). A bolt (18) is provided on the outside of the sleeve plate (12). The bolt (18) passes through the plug hole (17) and is threadedly connected to the hole groove (16).
3. The high-strength swing arm trailer jack according to claim 1, wherein: A cover plate (19) is provided on the top of the storage box (5). The cover plate (19) is connected to the storage box (5) through a rotating shaft. A groove (20) is opened on the top of the storage box (5). A magnetic snap (21) is provided at the bottom of the cover plate (19). The magnetic snap (21) is magnetically connected to the groove (20).
4. The high-strength swing arm trailer jack according to claim 2, characterized in that: The wheel set (13) is composed of four universal wheels. A jack hole (22) is opened on the surface of the mounting member (2). The fastener (3) is inserted and connected to the jack hole (22).
5. The high-strength swing arm trailer jack according to claim 1, wherein: A support seat (23) is provided on the top of the jack body (1). A top plate (24) is installed on the top of the support seat (23). A crank (25) is installed on the side surface of the support seat (23).
6. The high-strength rocker trailer jack according to claim 1, characterized in that: A sliding plate (26) is provided on the side surface of the jack body (1). A sliding track (27) is opened inside the sliding plate (26). A limit hole (28) is provided on the outside of the mounting member (2). A limit screw (29) is provided on the outside of the mounting member (2). The limit screw (29) passes through the limit hole (28) and is connected to a nut (30).