Jack for automobile maintenance

Abstract

The utility model discloses a jack for automobile maintenance, which relates to the technical field of automobile maintenance and comprises a base and a first connecting shaft, the bottom of the base is provided with a second connecting shaft, two ends of the first connecting shaft are provided with first rolling wheels, two ends of the second connecting shaft are provided with second rolling wheels, and the second rolling wheels are connected with the second connecting shaft. First grooves are formed in the tops of the first connecting shaft and the second connecting shaft, limiting holes are symmetrically formed in the two ends of the base, limiting blocks are arranged on the two sides of each limiting hole, a positioning plate is arranged at the top of each first groove, a stand column is fixedly connected to one end of each positioning plate, and a sliding block is installed at one end of each stand column; the bottom of the positioning plate is arc-shaped, and the spring is matched with the telescopic rod, so that when the spring stretches, the telescopic rod stretches along with the spring, and the spring can be kept in a stretching state; when the telescopic rod retracts, the extension spring retracts along with the telescopic rod to store tensile force, the base is pressed downwards to make contact with the ground, the contact area between the base and the ground is increased, and the rolling wheels are protected.

Description

Technical Field

[0001] This utility model relates to the field of automotive repair technology, specifically a jack for automotive repair. Background Technology

[0002] The earliest jacks were based on a screw mechanism and were operated manually, lifting heavy objects by using manpower and a lever. While their load-bearing capacity was limited, these jacks were already important lifting tools at the time. Automotive jacks are simple yet powerful mechanical tools primarily used for lifting and supporting heavy objects, especially cars. They utilize hydraulic principles (or other mechanical principles, such as screw mechanisms) to generate force, allowing repair personnel easy access to the underside of vehicles for inspection and repair. The name "jack" comes from its powerful load-bearing capacity. Although traditionally "jack" refers to one thousand pounds (approximately 453.6 kilograms), modern jacks typically have a load-bearing capacity far exceeding this, measured in tons. With the continuous development of hydraulic technology, hydraulic jacks emerged. Hydraulic jacks amplify force through the transmission of fluid, greatly improving their load-bearing capacity and stability. Today, automotive jacks play an irreplaceable role in the automotive repair industry as an essential repair tool. With the continuous development of technology, the performance and safety of jacks will be further improved, providing more convenient and reliable support for automobile repair work.

[0003] In traditional auto repair, jacks are typically supported by rollers to facilitate various repair operations. However, jacking puts stress on these rollers. Since the jack's function is to lift the vehicle, the rollers must bear the vehicle's weight. Prolonged use and repeated heavy loads can cause deformation or damage to the rollers, affecting their lifespan. Jacking also causes wear on the roller surface. During vehicle lifting, friction between the rollers and the ground increases, especially on uneven surfaces, where the rollers may experience greater wear. Jacking can also impact the roller bearings. When the jack lifts the vehicle, the roller bearings must withstand the sudden increase in weight and force, which can lead to bearing damage or malfunction. Damaged bearings can threaten the stability of the entire vehicle and endanger the safety of repair workers. Utility Model Content

[0004] Traditional auto repair jacks typically require rollers for support during operation, but this puts stress on the rollers. Since the jack's function is to lift the vehicle, the rollers must bear the vehicle's weight. Prolonged use and repeated load-bearing can cause deformation or damage to the rollers, affecting their lifespan. Jack use can also cause wear on the roller surface. During vehicle lifting, friction between the rollers and the ground increases, especially on uneven surfaces, where the rollers may experience greater wear. Furthermore, jack use can impact the roller bearings. When a jack lifts a vehicle, the roller bearings need to withstand a sudden increase in weight and force, which may lead to bearing damage or failure. Bearing damage may also threaten the stability of the entire vehicle. To solve the above problems, this application provides a car repair jack that uses a spring and a telescopic rod in cooperation. When the spring extends, the telescopic rod will also extend, generating a certain supporting force so that the spring can remain extended. When the telescopic rod retracts, the tension spring will retract, storing tension. The base presses down to contact the ground, increasing the contact area with the ground and protecting the rollers. When the positioning plate is removed, the telescopic rod can smoothly return to the extended state, making it highly practical.

[0005] The technical solution adopted by the embodiments of this application to solve its technical problem is:

[0006] A car repair jack includes: a base and a first connecting shaft, wherein the first connecting shaft is disposed at the bottom of the base;

[0007] The base has a second connecting shaft at its bottom. The first connecting shaft has first rollers at both ends, and the second connecting shaft has second rollers at both ends. The rotation of the first and second rollers allows the jack to move.

[0008] In one possible implementation, a first groove is provided on the top of both the first connecting shaft and the second connecting shaft, and a second groove is provided on one side of the first groove. By providing the first groove and the second groove on the top of the first connecting shaft and the second connecting shaft, an effective connection with other mechanical components can be achieved, and more installation and fixing options are provided.

[0009] In one possible implementation, square holes are symmetrically arranged on both sides of the base, and limit holes are symmetrically arranged at both ends of the base. Limit blocks are arranged on both sides of the limit holes. The limit blocks can position the slider and prevent the slider from sliding out of the groove.

[0010] In one possible implementation, a positioning plate is provided at the top of the first groove, a column is fixedly connected to one end of the positioning plate, a slider is installed at one end of the column, the bottom of the positioning plate is arc-shaped, and the main function of the positioning plate is to provide a stable support point for the first connecting shaft and the third connecting shaft. The column and the positioning plate are fixedly connected, and together they form a stable structure, making the whole system more stable and reliable. The slider is connected to the column, and the slider slides to drive the positioning plate to move.

[0011] In one possible implementation, a telescopic rod is fixedly connected to the top of the second groove. A tension spring is sleeved on the outside of the telescopic rod. The tension spring provides support to the telescopic rod, allowing it to move more smoothly and flexibly during extension or retraction, and ensuring the spring moves vertically. When the telescopic rod extends, the tension spring stretches accordingly, generating a certain tension force to keep the telescopic rod in its extended state. When the telescopic rod retracts, the tension spring contracts accordingly, storing the tension force, allowing the telescopic rod to smoothly return to its extended state.

[0012] In one possible implementation, a connecting rod is mounted on the top of the slider, and a pull rod is provided on the top of the connecting rod, allowing the slider to slide within the groove of the limiting hole.

[0013] In one possible implementation, the base has a support arm at its top, the bottom of the support arm is connected to a support rod by a pin, and a tray is mounted on the top of the support arm.

[0014] In one possible implementation, a support is mounted on the top of the base for placing maintenance tools, and a rocker arm is provided on one side of the base. Maintenance tools, such as screwdrivers, wrenches, or other tools, can be conveniently placed on the support for easy access by staff. The rocker arm can drive a hydraulic cylinder to work, allowing the support arm to support the car.

[0015] In summary, this utility model has at least one of the following beneficial technical effects:

[0016] 1. The slider can be easily pulled by the pull rod to move the positioning plate and loosen the first connecting shaft and the second connecting shaft. Pushing the pull rod can move the slider to move the positioning plate and fix the first connecting shaft and the second connecting shaft. The operation is simple and easy to learn.

[0017] 2. Through the cooperation of spring and telescopic rod, when the spring extends, the telescopic rod will also extend, generating a certain supporting force so that the spring can maintain its extended state; when the telescopic rod retracts, the tension spring will retract, storing tension, and the base will press down to contact the ground, increasing the contact area with the ground and protecting the rollers. When the positioning plate is removed, the telescopic rod can smoothly return to its extended state. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall rear side structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the overall tie rod structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the first connecting shaft structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the positioning plate structure of this utility model.

[0023] Reference numerals in the attached drawings: 1. Base; 2. First connecting shaft; 21. First groove; 22. Second groove; 3. Second connecting shaft; 4. Connecting rod; 5. Pull rod; 51. Slider; 52. Column; 53. Positioning plate; 54. Telescopic rod; 55. Tension spring; 6. Support arm; 7. Tray; 8. Support; 9. Support rod; 10. Rocker arm; 11. First rolling wheel; 12. Second rolling wheel; 13. Limiting hole; 14. Limiting block. Detailed Implementation

[0024] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The instrument placement rack involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] This embodiment describes the specific structure of a car repair jack, see details below. Figures 1-3As shown, a car repair jack includes: a base 1 and a first connecting shaft 2, wherein the first connecting shaft 2 is disposed at the bottom of the base 1; wherein a second connecting shaft 3 is disposed at the bottom of the base 1, first rollers 11 are mounted at both ends of the first connecting shaft 2, and second rollers 12 are mounted at both ends of the second connecting shaft 3, the rotation of the first rollers 11 and the second rollers 12 can realize the movement of the jack; a first groove 21 is formed on the top of both the first connecting shaft 2 and the second connecting shaft 3, and a second groove 22 is formed on one side of the first groove 21. By forming the first groove 21 and the second groove 22 on the top of the first connecting shaft 2 and the second connecting shaft 3, effective connection with other mechanical components can be realized, and more installation and fixing options are provided; base 1 The base 1 has square holes symmetrically arranged on both sides, and limit holes 13 are symmetrically arranged at both ends. Limit blocks 14 are arranged on both sides of the limit holes 13. The limit blocks 14 can position the slider 51 and prevent the slider 51 from sliding out of the groove. The top of the first groove 21 is provided with a positioning plate 53. One end of the positioning plate 53 is fixedly connected to a column 52. The slider 51 is installed at one end of the column 52. The bottom of the positioning plate 53 is arc-shaped. The main function of the positioning plate 53 is to provide a stable support point for the first connecting shaft 2 and the second connecting shaft 3. The column 52 and the positioning plate 53 are fixedly connected. Together they form a stable structure, making the whole system more stable and reliable. The slider 51 is connected to the column 52. The slider 51 slides and drives the positioning plate 53 to move.

[0026] Example 1:

[0027] When workers want to repair a car with a punctured tire that cannot be moved, they push the rocker arm 10 to place the car repair jack on one side of the car wheel, pull the lever 5 to move the slider 51 outward in the limiting hole 13, so that the positioning plate 53 separates from the first groove 21, and then push the jack to the appropriate position. The rocker arm 10 is pushed back and forth, and the base 1 is pressed down to contact the ground. The hydraulic cylinder drives the support arm 6 to lift the car, increasing the contact area with the ground and protecting the first rolling wheel 11 and the second rolling wheel 12.

[0028] Example 2:

[0029] like Figure 1 and Figure 2As shown, based on the same concept as the above embodiment, this embodiment also proposes: a telescopic rod 54 is fixedly connected to the top of the second groove 22, and a tension spring 55 is sleeved on the outside of the telescopic rod 54. The function of the tension spring 55 is to provide support for the telescopic rod 54, making it more stable and flexible during extension or retraction, and the telescopic rod 54 can ensure that the tension spring 55 moves vertically. When the telescopic rod 54 extends, the tension spring 55 will stretch accordingly, generating a certain tension, so that the telescopic rod 54 can maintain its extended state. When the telescopic rod 54 retracts, the tension spring 55 retracts accordingly, storing tension so that the telescopic rod 54 can smoothly return to the stretched state. A connecting rod 4 is installed on the top of the slider 51, and a pull rod 5 is installed on the top of the connecting rod 4. The slider 51 slides in the groove of the limiting hole 13. A support arm 6 is installed on the top of the base 1. The bottom of the support arm 6 is connected to the support rod 9 through a pin. A tray 7 is installed on the top of the support arm 6. A support 8 is installed on the top of the base 1 for placing maintenance tools. A rocker arm 10 is installed on one side of the base 1. Maintenance tools can be conveniently placed on the support 8. Whether it is a screwdriver, a wrench or other tools, they can be easily placed on the support 8 for easy access by the staff. The rocker arm 10 can drive the hydraulic cylinder to work so that the support arm 6 can support the car.

[0030] When the car repair is completed and the car repair jack needs to be removed, the worker pushes the rocker arm 10 back and forth to lower the support arm 6, and the tray 7 slowly separates from the car. After it is completely separated, the tension spring 55 extends outward to push the telescopic rod 54 to push the first connecting shaft 2 and the second connecting shaft 3 downward. The worker then pushes the pull rod 5 to move the slider 51 inward in the limiting hole 13, so that the positioning plate 53 is aligned with the first groove 21 to achieve the positioning of the first connecting shaft 2 and the second connecting shaft 3. The car repair jack can then be pulled out.

[0031] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A jack for automobile repair, characterized in that, include: Base (1); The first connecting shaft (2) is located at the bottom of the base (1); The base (1) has a second connecting shaft (3) at its bottom, the first connecting shaft (2) has a first rolling wheel (11) at both ends, and the second connecting shaft (3) has a second rolling wheel (12) at both ends.

2. The jack for vehicle repair according to claim 1, wherein: The top of the first connecting shaft (2) and the second connecting shaft (3) are both provided with a first groove (21), and a second groove (22) is provided on one side of the first groove (21).

3. The jack as set forth in claim 1, wherein: The base (1) has square holes symmetrically arranged on both sides, and limit holes (13) symmetrically arranged at both ends of the base (1). Limit blocks (14) are arranged on both sides of the limit holes (13).

4. The jack as set forth in claim 2, wherein: A positioning plate (53) is provided on the top of the first groove (21). A column (52) is fixedly connected to one end of the positioning plate (53). A slider (51) is installed on one end of the column (52). The bottom of the positioning plate (53) is arc-shaped.

5. The automotive service jack of claim 2, wherein: A telescopic rod (54) is fixedly connected to the top of the second groove (22), and a tension spring (55) is sleeved on the outside of the telescopic rod (54).

6. The automotive repair jack of claim 4, wherein: A connecting rod (4) is installed on the top of the slider (51), and a pull rod (5) is provided on the top of the connecting rod (4). The slider (51) slides in the groove of the limiting hole (13).

7. The jack as set forth in claim 1, wherein: The base (1) is provided with a support arm (6) at the top, the bottom of the support arm (6) is connected to the support rod (9) by a pin, and a tray (7) is installed on the top of the support arm (6).

8. The automobile repair jack as described in claim 1, characterized in that: The base (1) has a support (8) installed on its top for placing maintenance tools, and a rocker arm (10) is provided on one side of the base (1).

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