Air spring torsion angle measuring device

Abstract

The utility model discloses an air spring torsion angle measuring device which comprises a fixing sleeve, a scale block and a pointer, the fixing sleeve is arranged on an upper air chamber, the scale block is arranged on a shock absorber, the pointer is detachably connected to the fixing sleeve, and angle scales are carved on the side, close to the pointer, of the scale block in the circumferential direction of the shock absorber. The utility model has the advantages that the convenience of detection and the accuracy of detection data can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air springs, in particular to an air spring torsion angle measuring device. Background Art

[0002] Under full vehicle operating conditions, the air spring strut's wishbone, which is locked to the shock absorber, is pulled by the suspension, causing a twisting angle relative to the fixed end of the upper air chamber. This twisting angle is composed of two parts: one is the twisting caused by the vehicle's wheel hop suspension deformation, and the other is the twisting caused by the vehicle's steering. The torsion of the air spring strut is caused by the vehicle's suspension structure and is unavoidable in actual application scenarios. The magnitude of this torsion angle directly affects the service life of the air spring strut and also determines design factors such as the air spring structure, anti-rotation method, and abnormal noise elimination. Therefore, measuring and obtaining the torsion angle of the air spring is particularly important.

[0003] In conventional testing methods, when measuring the torsion angle of an air spring, the air spring is first mounted on a fixture and a fork on a gantry. The fixture and fork secure the upper air chamber of the air spring and the shock absorber. After the air spring strut is installed, it is reset and adjusted to the designed height. A line is then manually drawn on the outer wall of the shock absorber using a marker or knife as a reference mark. As the gantry moves upward, downward, or turns, the marking on the upper air chamber of the air spring will become misaligned with the marking on the shock absorber. The misalignment between the two sets of markings can be used to calculate the torsion angle of the air spring strut.

[0004] However, in the above-mentioned manual measurement method, the distance between the upper air chamber and the shock absorber is relatively far. It is difficult to control the vertical angle difference caused by the misalignment between the two and make accurate measurements by manual observation and measurement with the naked eye. Errors are prone to occur, resulting in unstable measurement data, low efficiency, and failure to meet the accuracy and authenticity of the measurement data, which affects the measurement results. Utility Model Content

[0005] The technical problem to be solved by the utility model is how to improve the accuracy of the measurement data of the torsion angle of the air spring.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] An air spring torsion angle measuring device includes a fixed sleeve, a scale block and a pointer. The fixed sleeve is arranged on the upper air chamber, the scale block is arranged on the shock absorber, and the pointer is detachably connected to the fixed sleeve. The side of the scale block close to the pointer is engraved with an angle scale along the circumferential direction of the shock absorber.

[0008] The measuring device can effectively improve the convenience of detection and the accuracy of detection data.

[0009] Preferably, the fixing sleeve includes an arc block, a connecting assembly and a bolt. The two groups of arc blocks are symmetrically arranged. One end of the two groups of arc blocks is rotatably connected by the connecting assembly, and the other end is connected by a bolt.

[0010] Preferably, the connecting assembly includes a rotating shaft and a connecting piece, the ends of the two groups of arc blocks are both provided with a rotating shaft, the rotating shafts are connected by a connecting piece, and the pointer is provided on the outer wall of one group of arc blocks.

[0011] Preferably, an arc-shaped clamping block is further provided on the inner wall of the arc-shaped block.

[0012] Preferably, an arc-shaped groove is provided on the inner wall of the scale block, and the arc-shaped groove is clamped on the shock absorber.

[0013] Preferably, the scale block is provided with a plurality of magnets capable of being adsorbed on the vibration absorber.

[0014] Preferably, the scale block is provided with a plurality of mounting holes, and a magnet is installed in each mounting hole.

[0015] Preferably, a waist-shaped hole is provided on the pointer, and the pointer is fixed to the fixing sleeve by a screw passing through the waist-shaped hole.

[0016] Preferably, it further comprises a plane bearing, wherein the plane bearing is sleeved on the spring disk of the shock absorber.

[0017] Preferably, a positioning sleeve is further included, and the positioning sleeve is arranged between the upper air chamber and the shock absorber.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] Compared with the existing detection methods, the utility model can effectively improve the convenience of detection and the accuracy of detection data. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the installation structure of an embodiment of the utility model;

[0021] Figure 2 This is a schematic structural diagram of a fixing sleeve according to an embodiment of the present utility model;

[0022] Figure 3 This is a structural diagram of the scale block of an embodiment of the utility model. DETAILED DESCRIPTION

[0023] In order to facilitate those skilled in the art to understand the technical solution of the present invention, the technical solution of the present invention is further described in conjunction with the accompanying drawings.

[0024] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0025] In this application, unless otherwise expressly specified or limited, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly indicate the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise expressly specified or limited.

[0026] See Figures 1 to 3 This embodiment discloses an air spring torsion angle measuring device, including a fixed sleeve 1, a scale block 2 and a pointer 3. The fixed sleeve 1 is arranged on the upper air chamber 4, the scale block 2 is arranged on the shock absorber 5, and the pointer 3 is detachably connected to the fixed sleeve 1 and points to the scale block 2. The scale block 2 is engraved with an angle scale along the circumferential direction of the shock absorber 5 on the side close to the pointer 2.

[0027] The fixing sleeve 1 includes two groups of arc blocks 11, a connecting assembly 12, and a bolt 13. The two groups of arc blocks 11 are symmetrically arranged. One end of the two groups of arc blocks 11 is rotatably connected by the connecting assembly 12, and the other end is fixedly connected by the bolt 13.

[0028] Furthermore, the connecting assembly 12 includes a rotating shaft 121 and a connecting piece 122 . The ends of the two groups of arc-shaped blocks 11 are both provided with a rotating shaft 121 , and the rotating shafts 121 are connected by the connecting piece 122 .

[0029] Furthermore, an arc-shaped clamping block 14 is further provided on the inner wall of the arc block 11; specifically, arc-shaped clamping blocks 14 of different thicknesses are added to the inner wall of the arc block 11 and clamped on the inner wall of the arc block 11, and the inner diameter of the fixing sleeve 1 is adjusted to be suitable for upper air chambers 4 of different diameters. The arc-shaped clamping block 14 is interference fit with the arc block 11 and can be effectively clamped on the upper and lower ends of the inner wall of the arc block 11.

[0030] The pointer 3 is provided with a waist-shaped hole 301, and the pointer 3 is fixed to the outer wall of one group of arc blocks 11 by screws passing through the waist-shaped hole 301. The setting of the waist-shaped hole 301 facilitates the adjustment of the installation height of the pointer 3 on the fixing sleeve 1.

[0031] An arc-shaped groove 201 is provided on the inner wall of the scale block 2, and the arc-shaped groove 201 is clamped on the shock absorber 5. A plurality of mounting holes 202 are also provided on the scale block 2. A magnet 6 capable of adsorbing the shock absorber 5 is installed in each mounting hole 202. The scale block 2 is adsorbed on the shock absorber 5 by the magnet 6, which is convenient for installation and disassembly. The upper end surface of the magnet 6 is flush with the top position of the mounting hole, thereby increasing the contact area with the contact surface of the shock absorber 5.

[0032] Furthermore, in order to ensure the smooth rotation of the piston on the upper air chamber 4 on the spring disk of the shock absorber 5, a plane bearing 7 is installed on the spring disk of the shock absorber 1. The piston on the upper air chamber 4 rotates on the plane bearing 7, which reduces friction resistance and improves the smoothness of the rotation of the upper air chamber 4. It can ensure that the shock absorber 1 and the upper air chamber 4 undergo relative angular displacement when the platform rises, falls and turns.

[0033] At the same time, gaskets are set on the upper and lower surfaces of the plane bearing 7. The two sets of gaskets are in contact with the piston and the shock absorber 5 respectively, so that the roller of the plane bearing 7 is evenly stressed, avoiding damage to the plane bearing 7 while maintaining the smooth rotation of the piston.

[0034] Furthermore, in this embodiment, a positioning sleeve 8 is provided between the piston on the upper air chamber 4 and the shock absorber 5, thereby avoiding excessive gap between the upper air chamber 4 and the shock absorber 5, which would cause radial deflection of the upper air chamber 4, and ensuring that only coaxial rotation occurs between the upper air chamber 4 and the shock absorber 5 when the angle occurs, thereby improving the stability of the rotation.

[0035] The working principle of this embodiment is as follows: first, two groups of arc blocks 11 are fixed on the upper air chamber 4 and fixed by bolts 13, then the arc groove 201 on the scale block 2 is clamped on the shock absorber 5, and the scale block 2 is adsorbed on the shock absorber 5 by the magnet 6, so that the angle scale on the top surface of the scale block 2 is directly below the pointer 3, and then the position of the waist hole 301 on the screw is adjusted to adjust the installation height of the pointer 3 on the fixing sleeve 1, so that the pointer 3 is aligned with the 0 position of the angle scale on the scale block 2. The closer the distance between the end of the pointer 3 and the scale position on the scale block 2 is, the more accurate the observation of the position of the pointer 3 on the scale can be. When the upper air chamber 4 rotates, the upper air chamber 4 drives the pointer 3 to rotate through the fixing sleeve 1, and the bottom of the pointer 3 moves on the scale block 2. By observing the distance displaced by the pointer 2 on the angle scale on the scale block 2, the torsional angle of the upper air chamber 4 relative to the shock absorber 5 can be obtained.

[0036] Compared with the existing measurement method of marking lines on the upper air chamber 4 and the spring disk of the shock absorber 5, then using a caliper to measure the displacement distance between the two sets of marked lines, and then calculating the angle based on the distance, the measuring device disclosed in this embodiment can effectively improve the convenience of detection and the accuracy of detection data.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description. It is intended that all variations within the meaning and range of equivalents of the claims be encompassed within the present invention, and any reference numerals in the claims should not be construed as limiting the claims to which they relate.

[0038] The above-mentioned embodiments only represent the implementation methods of the utility model. The protection scope of the utility model is not limited to the above-mentioned embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model, which all fall within the protection scope of the utility model.

Claims

1. An air spring torsion angle measuring device, characterized in that: It includes a fixed sleeve, a scale block and a pointer. The fixed sleeve is arranged on the upper air chamber, the scale block is arranged on the shock absorber, the pointer is detachably connected to the fixed sleeve, and the side of the scale block close to the pointer is engraved with an angle scale along the circumferential direction of the shock absorber.

2. The air spring torsion angle measuring device according to claim 1, characterized in that: The fixing sleeve includes an arc block, a connecting assembly and a bolt. The two groups of arc blocks are symmetrically arranged. One end of the two groups of arc blocks is rotatably connected by the connecting assembly, and the other end is connected by a bolt.

3. The air spring torsion angle measuring device according to claim 2, characterized in that: The connecting assembly includes a rotating shaft and a connecting piece. The ends of the two groups of arc blocks are both provided with a rotating shaft, and the rotating shafts are connected by the connecting piece. The pointer is set on the outer wall of one group of arc blocks.

4. The air spring torsion angle measuring device according to claim 2, characterized in that: The inner wall of the arc block is further provided with an arc-shaped clamping block.

5. The air spring torsion angle measuring device according to claim 1, characterized in that: An arc groove is provided on the inner wall of the scale block, and the arc groove is clamped on the shock absorber.

6. The air spring torsion angle measuring device according to claim 1, characterized in that: The scale block is provided with a plurality of magnets capable of being adsorbed on the vibration absorber.

7. The air spring torsion angle measuring device according to claim 5, characterized in that: The scale block is provided with a plurality of mounting holes, and a magnet is installed in each mounting hole.

8. The air spring torsion angle measuring device according to claim 1, characterized in that: The pointer is provided with a waist-shaped hole, and the pointer is fixed on the fixing sleeve by screws passing through the waist-shaped hole.

9. The air spring torsion angle measuring device according to claim 1, characterized in that: The utility model also comprises a plane bearing, wherein the plane bearing is sleeved on the spring disk of the shock absorber.

10. The air spring torsion angle measuring device according to claim 1, characterized in that: It also includes a positioning sleeve, which is arranged between the upper air chamber and the shock absorber.

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