Lifting mechanism and test board

Abstract

The utility model discloses a lifting mechanism and a test board, and belongs to the technical field of vehicle detection. The lifting mechanism comprises a lifting frame body; the air bag is connected with the lifting frame body; the guide blocks are located on the two sides of the lifting frame body, and one side of each guide block is of a V-shaped structure; and the rolling wheels are mounted on the two sides of the lifting frame body and abut against the guide blocks. A V-shaped structure is arranged on one side of the guide block, the guide block can be matched with a roller and guide the movement of the roller, the two tapered roller bearings can efficiently rotate in the guide block in a low-resistance mode, abrasion between the tapered roller bearings and the guide block is reduced, safe positioning in the X direction and the Y direction is achieved, stable and smooth lifting of the lifting mechanism is guaranteed, precision is higher, noise is lower, and the service life of the lifting mechanism is prolonged. Quick-wear parts do not exist, so that the later maintenance cost is reduced. The lifting mechanism is stable in structure and high in overall strength, the air bag is adopted as a driving structure, the bearing capacity is large, the bearing capacity of the lifting mechanism can cover static loads and test dynamic loads of all heavy trucks in the market, and the use range of the lifting mechanism is widened.

Description

Technical Field

[0001] This utility model relates to a lifting mechanism and a testing platform, belonging to the field of vehicle testing technology. Background Technology

[0002] During vehicle testing, a lifting mechanism is typically required to raise the vehicle to a suitable height to meet various testing needs, such as four-wheel alignment, chassis inspection, and suspension system adjustment. Most existing vehicle testing platform lifting mechanisms are only suitable for passenger cars, have weak load-bearing capacity, are unsuitable for heavy-duty trucks, and suffer from low structural stability, inaccurate lifting position detection, and a tendency to lose signals. Furthermore, existing lifting mechanisms often use hard friction for guidance, resulting in low efficiency and numerous vulnerable components, leading to a high failure rate, cumbersome maintenance, and increased maintenance costs. Utility Model Content

[0003] This utility model provides a lifting mechanism and a test platform to solve the problems of existing lifting mechanisms having weak load-bearing capacity, low structural stability, inaccurate lifting position detection, easy signal loss, inapplicability to heavy trucks, low efficiency, many vulnerable parts in the design, high failure rate, resulting in cumbersome maintenance work and increased maintenance costs.

[0004] This utility model is achieved through the following technical solution:

[0005] Firstly, this utility model provides a lifting mechanism, including...

[0006] Lifting frame;

[0007] The airbag is connected to the lifting frame.

[0008] Guide blocks are located on both sides of the lifting frame, and one side of the guide block has a V-shaped structure;

[0009] Rollers are installed on both sides of the lifting frame and abut against the guide blocks.

[0010] In one embodiment of this utility model, there are at least two guide blocks on each side, and the two guide blocks are arranged opposite to each other.

[0011] In one embodiment of this invention, the roller includes two tapered roller bearings arranged opposite each other, with V-shaped grooves formed on both sides. The two tapered roller bearings can rotate efficiently and with low resistance within the V-shaped guide rail. Through the V-shaped surface contact fit, the lifting frame is positioned in the X and Y directions, thereby improving the stability of the lifting mechanism.

[0012] In one embodiment of this utility model, a shaft is included, the roller is sleeved on the outer periphery of the shaft, and the shaft is connected to the lifting frame.

[0013] In one embodiment of this utility model, a base is included, and the airbag is mounted on the base.

[0014] In one embodiment of this utility model, an ear seat is included. The ear seat is mounted on the base and symmetrically distributed on both sides of the lifting frame. The guide block is connected to the ear seat.

[0015] In one embodiment of this utility model, a first limiting block and a second limiting block are included, which can respectively abut against the lifting frame. The first limiting block is used to limit the highest position of the lifting frame to ensure that the airbag is lifted into place within its safe travel range. The second limiting block is used to limit the lowest position of the lifting frame to protect the airbag from being over-compressed by the lifting frame.

[0016] In one embodiment of this invention, a sensor is also included, which is mounted on the base. This sensor detects the real-time position of the lifting frame. After the lifting frame is raised to its designated position, the sensor detects a relevant signal and feeds it back to the control system. The control system then controls the equipment to perform the next action, thus solving the problems of inaccurate lifting positions and easy signal loss.

[0017] In one embodiment of this invention, the sensor is covered by a housing. The housing has a semi-open structure, which can protect the sensor without affecting the sensor's mounting wiring or its measurement accuracy.

[0018] Secondly, this utility model provides a test platform, including the aforementioned lifting mechanism.

[0019] Beneficial effects

[0020] The lifting mechanism provided by this utility model includes a roller and a guide block. The roller is composed of two tapered roller bearings arranged opposite each other, with V-shaped grooves formed on both sides. The guide block has a V-shaped structure on one side, which can cooperate with the roller to guide the movement of the roller. The two tapered roller bearings can rotate efficiently and with low resistance in the guide block, reducing wear between them and the guide block, achieving safe positioning in the X and Y directions, ensuring smooth and stable lifting of the lifting mechanism, higher precision, lower noise, no vulnerable parts, and reduced maintenance costs.

[0021] This lifting mechanism boasts a stable structure and high overall strength. Utilizing an airbag as its drive mechanism, it offers a large load-bearing capacity, capable of handling the static and dynamic loads of all heavy-duty trucks on the market, thus expanding its application range. Furthermore, it is equipped with position sensors and a housing, enabling accurate detection of the lifting frame's raising and lowering movements with stable signal transmission, avoiding the problem of signal loss. Attached Figure Description

[0022] Figure 1 A perspective view of the lifting mechanism provided by this utility model;

[0023] Figure 2 Rear view of the lifting mechanism provided by this utility model;

[0024] Figure 3 for Figure 2 Sectional view at point AA;

[0025] Figure 4 for Figure 2 Sectional view at point BB;

[0026] In the diagram: 1. Base; 2. Lifting frame; 21. Protrusion; 3. Ear seat; 31. Groove; 4. Airbag; 5. First limiting block; 6. Second limiting block; 7. Guide block; 8. Roller; 9. Shaft; 10. Sensor; 11. Cover. Detailed Implementation

[0027] 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, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] like Figures 1 to 4 As shown in the illustration, this application provides a lifting mechanism for raising a vehicle to a suitable height during vehicle testing. The lifting mechanism includes a base 1, a lifting frame 2, lugs 3, and an airbag 4. The base 1 serves as the foundation of the entire lifting mechanism, providing support. Two lugs 3 are mounted on the base 1, symmetrically distributed on both sides of the lifting frame 2, and connected to it. The airbag 4 is mounted on the base 1, with one end fixedly connected to the base 1. The end of the airbag 4 facing away from the base 1 is connected to the lifting frame 2, enabling the airbag 4 to drive the lifting frame 2 in reciprocating motion. The side of the lifting frame 2 facing away from the airbag 4 has a plate-like structure for placing the tires of the vehicle under test.

[0031] like Figure 4 As shown, in some embodiments, a guide block 7 is provided on the side of the ear seat 3 near the lifting frame 2. One side of the guide block 7 has a V-shaped structure, and two guide blocks 7 are symmetrically arranged on both sides of the ear seat 3, that is, the tops of the V-shaped structures of the two guide blocks 7 are facing each other. A groove 31 is provided in the middle of the ear seat 3, which together with the two guide blocks 7 forms a V-shaped guide rail, providing guidance for the movement of the lifting frame 2. Rollers 8 are provided on both sides of the lifting frame 2. The rollers 8 are composed of two tapered roller bearings arranged opposite each other, forming V-shaped grooves on both sides. The rollers 8 are connected to the lifting frame 2 through a shaft 9. The shaft 9 is fixedly connected to the lifting frame 2, and the rollers 8 are rotatably connected to the shaft 9. The V-shaped grooves of the rollers 8 cooperate with the V-shaped structures of the guide blocks 7 on both sides, so that the lifting frame 2, driven by the airbag 4, drives the rollers 8 to move smoothly and steadily in the V-shaped guide rail through the shaft 9.

[0032] Furthermore, in this embodiment, at least one roller 8 and two guide blocks 7 are arranged on each side of the lifting frame 2. Each roller 8 is composed of two tapered roller bearings, enabling it to rotate efficiently and with low resistance within the V-shaped guide rails. Through pre-machining and post-installation adjustments, the rollers 8 are assembled between the guide rails with appropriate precision, and through V-face contact, the lifting frame 2 is positioned in the X and Y directions, thereby improving the stability of the lifting mechanism.

[0033] In some embodiments, the ear seat 3 is further provided with a first limiting block 5 and a second limiting block 6 on the side near the lifting frame 2. The first limiting block 5 and the second limiting block 6 are respectively installed at both ends of the guide block 7. The first limiting block 5 is installed at the top of the guide block 7, and the second limiting block 6 is installed at the end of the guide block 7 opposite to the first limiting block 5. The lifting frame 2 is provided with a protrusion 21, which can abut against the first limiting block 5 and the second limiting block 6 respectively. The lifting frame 2 rises under the drive of the airbag 4. When the protrusion 21 abuts against the first limiting block 5, the lifting frame 2 stops rising. The first limiting block 5 is used to limit the highest position of the lifting frame 2, ensuring that it is lifted into place within the safe travel range of the airbag 4. When the lifting frame 2 abuts against the second limiting block 6, the lifting frame 2 stops descending. The second limiting block 6 is used to limit the lowest position of the lifting frame 2, protecting the airbag 4 from being over-inflated by the lifting frame 2.

[0034] In some embodiments, a sensor 10 is also provided on the base 1. The sensor 10 is located below the lifting frame 2. The sensor 10 is a position detection sensor used to detect the real-time position of the lifting frame 2. After the lifting frame is lifted into position, the sensor detects the relevant signal and feeds it back to the control system. The control system then controls the equipment to perform the next action, solving the problems of inaccurate lifting position and easy signal loss. In the early stage of production, the position of the sensor 10 needs to be adjusted according to the customer's tire model, and a safe lifting range needs to be obtained through testing. A cover 11 is installed on the outside of the sensor 10. The cover 11 has a semi-open structure, which can protect the sensor 10 without affecting the installation wiring of the sensor 10 or the measurement accuracy of the sensor 10 itself.

[0035] In some embodiments, two airbags 4 are symmetrically arranged below the lifting frame 2. The airbags 4 are connected to an external pneumatic circuit, which includes pneumatic components such as solenoid valves, throttle valves, quick-release valves, and pressure regulating valves. The airbags 4 have significant thrust, capable of lifting heavy trucks, and exhibit excellent non-linear stiffness, providing good shock absorption and effectively preventing impacts. In practical applications, the lifting mechanism can be adjusted by regulating the various components in the pneumatic circuit to ensure good lifting synchronization, robust lifting capacity, and a suitable lifting rate.

[0036] Furthermore, this utility model also provides a test bench, which includes the aforementioned lifting mechanism. The lifting mechanism is mounted on the test bench via a base 1. When a vehicle is driven onto the test bench, the tires of the vehicle under test rest on the lifting frame 2. By inflating or deflating the airbag 4, the lifting frame 2 adjusts the vehicle under test to a suitable height to meet various testing requirements such as four-wheel alignment, chassis inspection, and suspension system adjustment.

[0037] The working principle of this utility model is as follows: During actual testing, the airbag 4 inflates to lift the lifting frame 2. The rollers 8 on both sides of the lifting frame 2 move upward along the guide blocks 7, and the lifting frame 2 rises to the top position. The truck drives into the test bench, and the wheels stop at the middle of the lifting frame 2. At this time, the lifting device is responsible for catching the wheels in the gap between the rotating hubs of the test bench. Then, the entire vehicle is smoothly lowered into the test position along with the lifting mechanism, and the lifting mechanism completes the downward lifting. The lifting frame 2 needs to descend a sufficient distance to ensure a safe clearance between the frame and the rotating wheels. After the vehicle test is completed, the lifting mechanism lifts the vehicle to the top position and maintains this position until the vehicle drives out of the test bench, waiting for the next vehicle to enter.

[0038] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

[0040] This document uses specific embodiments to illustrate the principles and implementation methods of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A lifting mechanism, characterized in that, include: Lifting frame (2); Airbag (4) is connected to the lifting frame (2); Guide blocks (7) are located on both sides of the lifting frame (2), and one side of the guide blocks (7) has a V-shaped structure; Rollers (8) are installed on both sides of the lifting frame (2) and abut against the guide block (7); the rollers (8) include two tapered roller bearings, which are arranged opposite to each other and form V-shaped grooves on both sides. Sensor (10) is mounted on base (1).

2. The lifting mechanism according to claim 1, characterized in that, The number of guide blocks (7) on each side is at least two, and the two guide blocks (7) are arranged opposite each other.

3. A lifting mechanism according to claim 2, characterized in that, Includes a shaft (9), the roller (8) is sleeved on the outer periphery of the shaft (9), and the shaft (9) is connected to the lifting frame (2).

4. A lifting mechanism according to claim 1, characterized in that, The airbag (4) is mounted on the base (1).

5. A lifting mechanism according to claim 4, characterized in that, Includes ear seat (3), which is mounted on the base (1) and symmetrically distributed on both sides of the lifting frame (2), and the guide block (7) is connected to the ear seat (3).

6. A lifting mechanism according to claim 1, characterized in that, It includes a first limiting block (5) and a second limiting block (6), which can respectively abut against the lifting frame (2).

7. A lifting mechanism according to claim 1, characterized in that, The sensor (10) is covered by a housing (11).

8. A test bench, characterized in that, Includes a lifting mechanism as described in any one of claims 1-7.

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