A vibration testing device for transmission control harness

Abstract

The utility model discloses a transmission control harness vibration test device, comprising a vibration platform, a vibration base plate is arranged on the upper surface of the vibration platform, a sample fixing assembly is installed on the vibration base plate, the sample fixing assembly comprises 4 support columns respectively arranged at the four corners of the vibration base plate, a plurality of fixed cross bars are arranged between each pair of adjacent support columns, a plurality of pairs of first through holes for cable ties to pass through are opened on each fixed cross bar along the horizontal radial direction, a control harness to be tested is fixedly installed on the sample fixing assembly along the horizontal circumferential direction or the vertical circumferential direction by the cable ties, the overall structure of the device is simple, the size is small, it is easy to install and easy to operate, a vibration test can be carried out using a small vibration platform, the research and development cost and safety hazards are reduced, the control harness can be firmly fixed on the sample fixing assembly, the vibration attenuation transmitted from the vibration platform to the control harness is effectively reduced, and the horizontal vibration test and the vertical vibration test can be completed without reorganizing the device structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of control harness test devices, and in particular relates to a transmission control harness vibration test device. Background Art

[0002] The control harness is an important part of the car, and its reliability seriously affects the safety performance of the car. In particular, the control harness of the car transmission is affected by the vibration of the transmission operation and the road vibration for a long time. Long-term vibration may cause damage to the internal structure of the control harness, loosening of the wiring terminals, etc., resulting in deterioration of the control harness performance or even failure. The control harness vibration test is a test for detecting the vibration resistance of the control harness. The method is to apply vibration excitation to the control harness to make the control harness vibrate, and combine the actual situation of the control harness after vibration excitation to obtain the vibration resistance of the control harness.

[0003] The existing control harness vibration test device directly spreads the control harness on the vibration table, which is difficult to fix. The control harness will move during the vibration process, changing the vibration excitation transmitted to the control harness by the vibration table. Actual vehicle testing increases R&D costs and safety hazards. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a transmission control harness vibration test device, which can solve the technical problems of the difficulty in fixing the control harness in the existing vibration test, unsatisfactory experimental results, high actual vehicle testing costs and safety hazards.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A transmission control harness vibration test device comprises a vibration platform, wherein a rectangular vibration bottom plate is arranged on the upper surface of the vibration platform, a plurality of mounting holes are opened on the vibration bottom plate, and bolts are passed through the mounting holes to fix the vibration bottom plate on the vibration platform;

[0007] A sample fixing assembly is fixedly mounted on the vibration base plate, and a control harness to be tested is fixedly mounted on the sample fixing assembly via a cable tie;

[0008] The sample fixing assembly comprises four supporting columns respectively arranged at the four corners of the vibration bottom plate, a fixing cross bar is arranged between each pair of adjacent supporting columns, and a plurality of pairs of first through holes for the cable ties to pass through are arranged on the fixing cross bar along the horizontal radial direction.

[0009] The utility model also includes the following technical features:

[0010] An L-shaped fixing block is arranged between each supporting column and the vibration base plate, the bottom of the fixing block is fixedly mounted on the vibration base plate by bolts, and the side wall of the fixing block is in contact with the side wall of the supporting column and fixedly mounted by bolts.

[0011] The support column is in the shape of a regular quadrangular prism and includes a support column body. A vertical mounting groove is processed on the side edge of the support column body facing outward, and an auxiliary rod is detachably installed in the vertical mounting groove. A plurality of crescent-shaped grooves are provided on the side of the auxiliary rod facing away from the support column body, and the grooves are arranged in the same plane as the fixed cross bar.

[0012] The support column body is provided with a plurality of second through holes, the two ports of the second through holes are respectively located on two adjacent outer side walls of the support column body, one outlet of the second through hole is located obliquely above the groove, and the other outlet of the second through hole is located obliquely below the groove.

[0013] There are no less than 6 fixed cross bars between each adjacent pair of support columns.

[0014] There are no less than 3 pairs of first through holes on each of the fixed cross bars.

[0015] Compared with the prior art, the utility model has the following technical effects:

[0016] (I) The overall structure of the device is simple, small in size, easy to install and operate. The control harness to be tested can be firmly fixed on the sample fixing assembly, effectively reducing the vibration attenuation transmitted from the vibration platform to the control harness and improving the test accuracy.

[0017] (II) This device does not need to be installed on the transmission and can be used in conjunction with a small vibration test platform to carry out vibration tests, thereby reducing R&D costs and safety hazards.

[0018] (III) The device can fix the control harness in both horizontal and vertical directions. The same group of tests can complete horizontal vibration tests and vertical vibration tests without replacing the vibration platform or reorganizing the device structure.

[0019] (IV) This device can install multiple control harnesses at the same time, and carry out vibration tests at the same time without affecting each other, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model when the control harness is fixed horizontally and circumferentially.

[0021] Figure 2 It is a schematic diagram of the overall structure of the utility model when the control harness is fixed vertically and circumferentially.

[0022] Figure 3It is an exploded view of the support column of the utility model.

[0023] Figure 4 It is a vertical sectional view of the utility model.

[0024] Figure 5 It is a transverse sectional view of the utility model.

[0025] The meaning of each number in the figure is:

[0026] 1. Vibration platform, 2. Vibration base plate, 3. Mounting hole, 4. Bolt, 5. Sample fixing assembly, 6. Cable tie, 7. Control harness, 8. Fixing block;

[0027] 51. support column, 52. fixed cross bar, 53. first through hole;

[0028] 511. Support column body, 512. Vertical mounting groove, 513. Auxiliary rod, 514. Groove, 515. Second through hole.

[0029] The specific contents of the utility model are further explained in detail below in conjunction with the embodiments. DETAILED DESCRIPTION

[0030] In accordance with the above technical solution, specific embodiments of the present utility model are given below. It should be noted that the present utility model is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of this application fall within the protection scope of the present utility model.

[0031] In the present utility model, unless otherwise specified, directional words such as "upper", "lower", "left", "right", etc. are usually defined based on the drawings in the corresponding accompanying drawings, and "inside" and "outside" refer to the inside and outside of the corresponding component outline.

[0032] Example:

[0033] This embodiment provides a transmission control harness vibration test device. Figures 1 to 5 As shown, it includes a vibration platform 1, a rectangular vibration base plate 2 is arranged on the upper surface of the vibration platform 1, a plurality of mounting holes 3 are opened on the vibration base plate 2, and bolts 4 pass through the mounting holes 3 to fix the vibration base plate 2 on the vibration platform 1;

[0034] A sample fixing assembly 5 is fixedly mounted on the vibration base plate 2, and a control harness 7 to be tested is fixedly mounted on the sample fixing assembly 5 via a cable tie 6;

[0035] The sample fixing assembly 5 includes four support columns 51 respectively arranged at the four corners of the vibration base plate 2. A fixed cross bar 52 is arranged between each pair of adjacent support columns 51. The fixed cross bar 52 has multiple pairs of first through holes 53 for the cable ties 6 to pass through in a horizontal radial direction.

[0036] In this embodiment, the arrangement of the multiple mounting holes 3 on the vibration base plate 2 makes the vibration base plate 2 suitable for multiple models of vibration platforms 1. The structural setting of the sample fixing component 5 can perform horizontal vibration tests on the control harness 7 as well as vertical vibration tests without the need for structural changes. The specific control method of the control harness 7 in the test is: when it is necessary to achieve horizontal vibration of the control harness 7, the control harness 7 is tied to the fixed cross bar 52 along the horizontal circumferential direction, and each tie 6 passes through a corresponding first through hole 53 to fix the control harness 7. That is to say, a pair of first through holes 53 is matched with a pair of tie ties 6 to control The control harness 7 is doubly fixed at the position corresponding to the first through hole 53 to improve the reliability of fixation. When it is necessary to realize vertical vibration of the control harness 7, the control harness 7 can be placed on a pair of opposite fixed cross bars 52 to fix the control harness 7 along the vertical circumferential direction. The pair of first through holes 53 are respectively located on the lateral sides of the control harness 7. A cable tie 6 is passed through the pair of first through holes 53 to fix the control harness 7. During the test, the vibration platform 1 generates vibration excitation of a certain frequency and amplitude, and the vibration is transmitted to the control harness 7 fixed on the sample fixing assembly 5 through the vibration base plate 2, thereby realizing horizontal or vertical vibration of the control harness 7.

[0037] It should be noted that, in order to ensure the reliability of fixing the control harness 7 , the connector of the control harness 7 can be placed at the first through hole 53 , and the cable tie 6 can be used to enhance the stability.

[0038] As a preferred solution of this embodiment, an L-shaped fixing block 8 is arranged between each support column 51 and the vibration base plate 2 in this embodiment, and the bottom of the fixing block 8 is fixedly mounted on the vibration base plate 2 by bolts 4, and the side walls of the fixing block 8 are in contact with the side walls of the support column 51 and are fixedly mounted by bolts 4. The L-shaped structure of the fixing block 8 plays a reinforcing role, increases the connection stiffness between the vibration base plate 2 and the support column 51, and reduces the vibration attenuation transmitted to the control harness 7 when the device vibrates horizontally.

[0039] As a preferred solution of this embodiment, the support column 51 in this embodiment is in the shape of a regular quadrangular prism, and the support column 51 includes a support column body 511, and a vertical mounting groove 512 is processed on the side edge of the support column body 511 facing the outside, and an auxiliary rod 513 is detachably installed in the vertical mounting groove 512, and a plurality of crescent-shaped grooves 514 are provided on the side of the auxiliary rod 513 facing away from the support column body 511, and the grooves 514 are arranged at the same height as the fixed cross bar 52. When the longer control harness 7 is fixed horizontally, one end of the control harness 7 is extended around the support column 51 by a fixed cross bar 52. To a fixed cross bar 52 adjacent to the same plane, the part of the control harness 7 wrapped around the support column 51 is embedded in the groove 514, which can reduce the wear of the control harness 7 caused by sharp edges during vibration. The auxiliary rod 513 is a consumable part, which can be detachably installed on the support column body 511 for easy replacement. Specifically, the auxiliary rod 513 is also in the shape of a regular quadrangular prism, and the mounting groove 512 is fitted with the two side walls adjacent to the auxiliary rod 513. The auxiliary rod 513 and the support column body 511 are combined into a support column 51 in the shape of a regular quadrangular prism, so that the overall structure of the support column 51 is stable and it is easy to install the fixed cross bar 52.

[0040] As a preferred solution of this embodiment, a plurality of second through holes 515 distributed at equal intervals are provided on the support column body 511 in this embodiment, and the two ports of the second through hole 515 are respectively located on two adjacent outer walls of the support column body 511, and one outlet of the second through hole 515 is located obliquely above the groove 514, and the other outlet of the second through hole 515 is located obliquely below the groove 514. The cable tie 6 can pass through the second through hole 515 to bundle and fix the control harness 7 located in the groove 514, thereby further improving the stability of the control harness 7 relative to the sample fixing assembly 5 and reducing the vibration attenuation transmitted to the control harness 7 when the device vibrates horizontally.

[0041] As a preferred solution of this embodiment, there are no less than 6 fixed cross bars 52 between each adjacent pair of support columns 51 in this embodiment, and at least 6 control harnesses 7 can be installed horizontally at the same time, and horizontal vibration tests can be carried out simultaneously without affecting each other.

[0042] As a preferred solution of this embodiment, in this embodiment, there are no less than 3 pairs of first through holes 53 on each fixed cross bar 52, and at least 3 control harnesses 7 can be vertically installed at the same time, and vertical vibration tests can be carried out simultaneously without affecting each other.

[0043] In actual operation of this embodiment:

[0044] Before the first use of the device, the sample fixing assembly 5 is fixedly installed on the vibration base plate 2. Before the test, according to the vibration requirements, the control harness 7 is fixed to the sample fixing assembly 5 with a cable tie 6 in the horizontal circumferential direction or the vertical circumferential direction. After the control harness 7 is fixed, the above device is fixedly installed on the vibration platform 1. After the installation is completed, the vibration platform 1 is operated to generate vibration excitation of a certain frequency and amplitude. After completing the vibration test for a predetermined number of cycles, check whether the control harness 1 is damaged, and test whether the performance of the control harness 7 has changed, so as to obtain the vibration resistance and vibration fatigue life of the control harness 7.

Claims

1. A transmission control harness vibration test device, comprising a vibration platform (1), characterized in that: The upper surface of the vibration platform (1) is provided with a rectangular vibration base plate (2), a plurality of mounting holes (3) are provided on the vibration base plate (2), and bolts (4) pass through the mounting holes (3) to fix the vibration base plate (2) on the vibration platform (1); A sample fixing assembly (5) is fixedly mounted on the vibration base plate (2), and a control harness (7) to be tested is fixedly mounted on the sample fixing assembly (5) via a cable tie (6); The sample fixing assembly (5) comprises four support columns (51) respectively arranged at the four corners of the vibration base plate (2), a fixed cross bar (52) is arranged between each pair of adjacent support columns (51), and a plurality of pairs of first through holes (53) for the cable ties (6) to pass through are provided on the fixed cross bar (52) along a horizontal radial direction.

2. The transmission control harness vibration test device according to claim 1, characterized in that: An L-shaped fixing block (8) is provided between each of the supporting columns (51) and the vibration base plate (2); the bottom of the fixing block (8) is fixedly mounted on the vibration base plate (2) by bolts (4); and the side wall of the fixing block (8) is in contact with the side wall of the supporting column (51) and is fixedly mounted by bolts (4).

3. The transmission control harness vibration test device according to claim 1, characterized in that: The support column (51) is in the shape of a regular quadrangular prism, and comprises a support column body (511). A vertical mounting groove (512) is processed on the side edge of the support column body (511) facing outward, and an auxiliary rod (513) is detachably mounted in the vertical mounting groove (512). A plurality of crescent-shaped grooves (514) are provided on the side of the auxiliary rod (513) facing away from the support column body (511), and the grooves (514) are arranged at the same height as the fixed cross bar (52).

4. The transmission control harness vibration test device according to claim 3, characterized in that: The support column body (511) is provided with a plurality of second through holes (515), and two ports of the second through holes (515) are respectively located on two adjacent outer side walls of the support column body (511), one outlet of the second through hole (515) is located obliquely above the groove (514), and the other outlet of the second through hole (515) is located obliquely below the groove (514).

5. The transmission control harness vibration test device according to claim 1, characterized in that: There are no less than 6 fixed cross bars (52) between each adjacent pair of support columns (51).

6. The transmission control harness vibration test device according to claim 5, characterized in that: The number of first through holes (53) on each of the fixed cross bars (52) is no less than 3 pairs.

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