CN212658425U - Automobile-used coil spring atress rack calibration device - Google Patents

Abstract

The utility model belongs to the technical field of the car, specific automobile-used coil spring atress rack calibration device that says so. The calibration device comprises a force applying device, a spring, an upper tray, a support frame, a lower tray, a strain gauge, a force sensor and an upper platform; the lower tray is arranged on the horizontal ground; the supporting frame penetrates through the upper tray, the upper end of the supporting frame is fixed with the lower end of the upper platform, and the lower end of the supporting frame is fixed with the upper end of the lower tray; the force applying device is arranged in the middle of the upper tray; springs are arranged at two ends of the force applying device; one end of the spring is fixed with the upper tray, and the other end of the spring is fixed with the upper platform; the vehicular spiral spring is arranged between the upper tray and the lower tray; the strain gauge is fixed on the vehicle spiral spring; the force sensor is embedded in the lower tray. The utility model is used for the calibration work of low-cost, convenient, high-efficient, accurate completion automobile-used coil spring atress has solved the problem that the spring test machine exists with high costs, area is big, the maintenance cost is high.

Description

Automobile-used coil spring atress rack calibration device

Technical Field

The utility model belongs to the technical field of the car, specific automobile-used coil spring atress rack calibration device that says so.

Background

Coil springs are widely used in automotive suspensions and are the most used component in modern automobiles. Its advantages are high impact absorbing power and high riding comfortability. The stress of the spiral spring is an important parameter when the suspension is designed and tested. One way to obtain the stress of the coil spring is to stick a strain gauge on the coil spring to obtain the relationship between the strain gauge and the force, and then obtain the stress of the coil spring. We usually use a spring tester to perform strain and force calibration. The method has the defects of high cost, large occupied area and high maintenance cost of the spring tester, and a calibration device which is low in cost, small in occupied space, simple in structure and high in accuracy is needed at present.

Disclosure of Invention

The utility model provides a simple structure's automobile-used coil spring atress rack calibration device, this calibration device are used for low-cost, convenient, high-efficient, accurate completion automobile-used coil spring atress demarcation work, have solved the problem that current spring test machine exists with high costs, area is big, the maintenance cost is high.

The technical scheme of the utility model is explained as follows with the attached drawings:

a calibration device for a stress rack of a vehicular spiral spring comprises a force applying device 1, a spring 2, an upper tray 3, a support frame 4, a lower tray 5, a strain gauge 6, a force sensor 7 and an upper platform 8; the lower tray 5 is arranged on the horizontal ground; the supporting frame 4 penetrates through the upper tray 3, the upper end of the supporting frame is fixed with the lower end of the upper platform 8, and the lower end of the supporting frame is fixed with the upper end of the lower tray 5; the force applying device 1 is arranged in the middle of the upper tray 3; two ends of the force applying device 1 are provided with springs 2; one end of the spring 2 is fixed with the upper tray 3, and the other end of the spring is fixed with the upper platform 8; the vehicle spiral spring 9 is arranged between the upper tray 3 and the lower tray 5; the strain gauge 6 is fixed on a vehicular spiral spring 9; the force sensor 7 is embedded in the lower tray 5.

The strain gauge 6 is adhered to the vehicular coil spring 9.

The force applying device 1 is a hydraulic cylinder.

Two or four support frames 4 are provided.

The utility model has the advantages that:

1) the utility model is portable, simple in structure and high in accuracy;

2) the utility model discloses effectively solved in the past the shortcoming that spring test machine purchasing cost is high, area is big, maintenance duration is long.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure: 1. A force applying device;

2. a spring;

3. an upper tray;

4. a support frame;

5. a lower tray;

6. a strain gauge;

7. a force sensor;

8. an upper platform;

9. a vehicular coil spring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Referring to fig. 1, the calibration device for the stress rack of the vehicular spiral spring comprises a force applying device 1, a spring 2, an upper tray 3, a support frame 4, a lower tray 5, a strain gauge 6, a force sensor 7 and an upper platform 8.

The lower tray 5 is arranged on the horizontal ground; the calibration device comprises a force applying device 1, a spring 2, an upper tray 3, a support frame 4, a lower tray 5, a strain gauge 6, a force sensor 7 and an upper platform 8; the lower tray 5 is arranged on the horizontal ground; the supporting frame 4 penetrates through the upper tray 3, the upper end of the supporting frame is fixed with the lower end of the upper platform 8, and the lower end of the supporting frame is fixed with the upper end of the lower tray 5; the force applying device 1 is arranged in the middle of the upper tray 3; two ends of the force applying device 1 are provided with springs 2; one end of the spring 2 is fixed with the upper tray 3, and the other end of the spring is fixed with the upper platform 8; the vehicle spiral spring 9 is arranged between the upper tray 3 and the lower tray 5; the strain gauge 6 is fixed on a vehicular spiral spring 9; the force sensor 7 is embedded in the lower tray 5.

The force applying device 1 is a hydraulic device which utilizes liquid force transmission to perform upward and downward actions and is used for applying acting force to the vehicle spiral spring 9, and a hydraulic cylinder can be adopted.

The springs 2 are two in number and are used to tension the upper tray 3.

The upper tray 3 is used for supporting the upper end of the vehicular coil spring 9.

The support frames 4 are two or four and are used for supporting the vertical force of the whole structure.

The lower tray 5 has a force sensor 7 embedded therein, and serves to support the lower end of a coil spring 9 for a vehicle.

The strain gauge 6 is used for measuring the deformation of the vehicular coil spring 9.

The force sensor 7 is embedded in the lower tray 5 and is used for measuring the stress of the vehicular spiral spring 9.

During calibration, the upper end of the vehicular spiral spring 9 is fixed below the upper tray 3, the lower end of the vehicular spiral spring 9 is fixed on the lower tray 5 with the force sensor 7, the vehicular spiral spring 9 is loaded through the force applying device 1, strain and stress of the vehicular spiral spring 9 are read, the relation between strain and stress is obtained, further the strain-stress coefficient is obtained, and finally the stress of the vehicular spiral spring 9 is obtained. The utility model discloses the device is portable, simple structure, and the degree of accuracy is higher, has effectively solved the shortcoming that spring test machine purchase cost is high, area is big, maintenance duration is long in the past.

The specific steps during calibration are as follows:

step one, adjusting the distance between an upper tray 3 and a lower tray 5 according to the length of a vehicular spiral spring 9, and placing a spring 2 between the upper tray 3 and the lower tray 5;

step two, applying a certain pretightening force to the vehicular spiral spring 9 by using the force applying device 1 to ensure that the vehicular spiral spring 9 is not loosened;

and step three, loading different pressures on the vehicular spiral spring 9 through the force applying device 1, compressing the vehicular spiral spring 9, recording the strain of the vehicular spiral spring 9 and the pressure of the force sensor 7, obtaining a strain-force value, further obtaining a strain-force coefficient, and finally obtaining the stress of the vehicular spiral spring 9.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. A calibration device for a stress rack of a vehicular spiral spring is characterized by comprising a force application device (1), a spring (2), an upper tray (3), a support frame (4), a lower tray (5), a strain gauge (6), a force sensor (7) and an upper platform (8); the lower tray (5) is arranged on the horizontal ground; the supporting frame (4) penetrates through the upper tray (3), the upper end of the supporting frame is fixed with the lower end of the upper platform (8), and the lower end of the supporting frame is fixed with the upper end of the lower tray (5); the force applying device (1) is arranged in the middle of the upper tray (3); two ends of the force applying device (1) are provided with springs (2); one end of the spring (2) is fixed with the upper tray (3), and the other end of the spring is fixed with the upper platform (8); the vehicular spiral spring (9) is arranged between the upper tray (3) and the lower tray (5); the strain gauge (6) is fixed on a vehicular spiral spring (9); the force sensor (7) is embedded in the lower tray (5).

2. The calibration device for the stress bearing rack of the vehicular spiral spring as claimed in claim 1, wherein the strain gauge (6) is adhered on the vehicular spiral spring (9).

3. The calibration device for the vehicular spiral spring stress rack as claimed in claim 1, wherein the force applying device (1) is a hydraulic cylinder.

4. The calibration device for the vehicular spiral spring stress rack as claimed in claim 1, wherein there are two or four support frames (4).

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