Automobile wire harness bending endurance test equipment

Abstract

The utility model provides an automobile wire harness bending endurance test device, and relates to the technical field of automobile wire harness tests, the automobile wire harness bending endurance test device comprises a mobile vehicle body, both sides of the top of the mobile vehicle body are provided with hand-cranking screw rod lifting platforms, and the inner sides of the tops of the hand-cranking screw rod lifting platforms on both sides are connected with triangular supporting blocks through bolts. According to the test equipment, through a series of accurate design and function configuration, the accuracy and reliability of the test are remarkably improved, and through the same height design of the moving end mounting profile and the fixed end mounting profile and the application of a hand-shaking lead screw lifting table and a linear guide rail sliding table, the test accuracy and reliability are greatly improved. Accurate adjustment of the three-dimensional position of the wire harness is achieved, and it is ensured that the installation position of the wire harness conforms to the real vehicle state.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile wire harness test, especially relates to a kind of automobile wire harness endurance test equipment. BACKGROUND

[0002] With the rapid development of automobile industry, as the network main body of automobile circuit, the quality and reliability of automobile wire harness are crucial to the overall performance and safety of automobile. In the process of driving, wire harness is constantly subjected to bending, torsion and other mechanical stress, which may cause problems such as wear of insulation layer and breakage of conductor over a long period of time, thereby affecting the normal operation of automobile. Therefore, in order to ensure the durability and reliability of automobile wire harness in actual use, endurance test needs to be carried out.

[0003] This test aims to simulate various movements and stress conditions of automobile wire harness in actual working environment, and detect whether the wire harness can still maintain good electrical performance and mechanical strength after a certain number of cycles through repeated bending and twisting operations. Accurate bending and twisting endurance test can help automobile manufacturers and component suppliers to identify potential quality problems of wire harness, optimize the design and production process of wire harness, and improve the overall quality and reliability of automobile.

[0004] The test equipment in the prior art has the following problems when in use: it cannot adjust the wire harness in multiple directions, which makes the operator unable to flexibly adjust the position of the wire harness according to the specifications and test requirements of different wire harnesses, and cannot ensure that the wire harness can be subjected to accurate bending and twisting force during the test. Therefore, a kind of automobile wire harness bending and twisting endurance test equipment is needed to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art and provides an automobile wire harness bending and twisting endurance test equipment.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an automobile wire harness bending and twisting endurance test equipment, comprising a mobile vehicle body, two hand-operated screw rod lifting platforms are installed on the top of the mobile vehicle body on both sides, a triangular support block is bolted to the inner side of the top of the two hand-operated screw rod lifting platforms on both sides, and a fixed-end mounting profile is installed on the top of the triangular support block.

[0007] Preferably, a middle welding frame is welded to the middle of the top end of the mobile vehicle body, a gas cylinder is installed in the middle of the middle welding frame, and a top plate is connected to the top of the middle welding frame.

[0008] Preferably, a moving-end mounting profile is installed on both sides of the top of the top plate.

[0009] Preferably, the mobile vehicle body bottom is provided with casters on both sides, and the mobile vehicle body bottom is provided with adjusting feet on the outer sides close to the casters.

[0010] Preferably, the middle welding frame is provided with stroke limiting devices between the top and the top plate.

[0011] Preferably, the mobile vehicle body is provided with linear guide rail slides on the top close to the bottom of the hand-cranked lead screw lifting platform, and the hand-cranked lead screw lifting platform is installed on the linear guide rail slides.

[0012] Preferably, the motion end mounting profiles are of the same height, and the fixed end mounting profiles are of the same height.

[0013] Preferably, the adjusting feet are higher than the casters during the movement of the mobile vehicle body.

[0014] Advantages

[0015] In the utility model, the test equipment is provided with a series of precise designs and function configurations, which significantly improves the accuracy and reliability of the test, and the same height design of the motion end mounting profiles and the fixed end mounting profiles and the use of the hand-cranked lead screw lifting platform and the linear guide rail slides realize the precise adjustment of the three-dimensional position of the wire harness, ensure that the wire harness installation position meets the real vehicle state, and more truly simulate the stress and motion of the wire harness in actual use. The cooperation of the stroke limiting devices and the limiting controllers strictly controls the wire harness motion stroke within the error range, prevents damage and data deviation caused by excessive motion, and the real-time statistical function of the counter provides accurate records for the test times, which is convenient for scientific evaluation of the durability. The precise control of the cylinder motion frequency and pressure by the cylinder control cabinet further guarantees the accuracy of the power output and action execution in the test process, and when the test is carried out in the environmental cabin, the reasonable layout and sealing measures ensure the normal operation of the equipment in the special environment, so that the test result can better reflect the durability of the wire harness in the actual complex environment, and provide reliable data support for the quality evaluation and improvement of the automobile wire harness.

[0016] The utility model discloses, equipment has fully considered different use scene and demand on design, has shown excellent adaptability and convenience. The equipment can be moved to any test position easily with the bottom trundle, the flexibility of equipment is improved greatly, and the requirement of different test site is satisfied. The adjusting foot provides stable support and leveling function when equipment is fixed, and the stability of equipment when working is ensured, and is not limited by site condition. The harness of two different models but same stroke can be adapted, the application range of equipment is widened, and the trouble of needing to replace equipment or carrying out complex adjustment because of harness model difference is reduced. When testing in the environmental cabin, the design that action execution part and controller are placed in the cabin and cabin respectively, both satisfy the special environment test demand, and guarantee the normal work of controller, and through good cable and pipeline connection sealing measure, the stability of signal and power transmission is ensured. Overall, these design features make equipment can carry out work conveniently and efficiently under various test environment and condition, improve test efficiency, and reduce operation difficulty and cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is overall structure diagram of the utility model;

[0018] Figure 2 It is overall axle side view of the utility model;

[0019] Figure 3 It is overall front view of the utility model;

[0020] Figure 4 It is overall bottom view of the utility model.

[0021] Legend:

[0022] 1, hand-operated screw rod lifting platform;2, air cylinder;3, fixed end mounting profile;4, moving end mounting profile;5, linear guide rail sliding table;6, stroke limiting device;7, trundle;8, adjusting foot;9, centrally located welding frame;10, mobile vehicle body;11, top plate;12, triangular support block. DETAILED DESCRIPTION

[0023] In order to make the technical means, creation features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor all belong to the protection scope of the utility model.

[0024] The specific embodiments of the utility model are described below in combination with the drawings. Specific embodiment one:

[0026] Reference Figures 1-4 A kind of automobile wire harness flexing endurance test equipment, including mobile car body 10, both sides of the top of mobile car body 10 are equipped with hand screw rod lifting platform 1, the inner side of the top of both sides of hand screw rod lifting platform 1 is bolted with triangular support block 12, the top of triangular support block 12 is equipped with fixed end installation profile 3.

[0027] Middle of the top end of mobile car body 10 is welded with middle welding frame 9, middle welding frame 9 is installed in the middle of the inside of middle welding frame 9, the bottom of gas cylinder 2 is configured with gas cylinder control cabinet, the top of middle welding frame 9 is connected with top plate 11, both sides of the top of top plate 11 are equipped with moving end installation profile 4, both sides of the bottom of mobile car body 10 are equipped with trundle 7, both sides of the bottom of mobile car body 10 are equipped with adjusting foot 8 close to the outside of trundle 7, stroke limiting device 6 is connected between the top of middle welding frame 9 and top plate 11, the bottom of the top of mobile car body 10 is equipped with linear guide rail sliding table 5 close to hand screw rod lifting platform 1, hand screw rod lifting platform 1 is installed on linear guide rail sliding table 5, moving end installation profile 4 is the same height, fixed end installation profile 3 is the same height, the position of adjusting foot 9 is higher than that of trundle 7 during the movement of mobile car body 10, mobile car body 10 is used as the basic bearing platform of the whole equipment, the trundle (7) at the bottom makes it movable, and the adjusting foot (8) is used for supporting and leveling when the equipment is fixed.

[0028] The following is a detailed analysis of each component:

[0029] Hand screw rod lifting platform 1: used for adjusting the height of fixed end installation profile 3, that is, the Z-axis direction.

[0030] Gas cylinder 2: as the main actuator, provides power for the flexing movement of the wire harness.

[0031] Installation profile: including moving end installation profile 4 and fixed end installation profile 3, respectively used for installing the moving end and fixed end of the wire harness, moving end installation profile 4 is installed on both sides of the top of top plate 11, fixed end installation profile 3 is installed on the inner side of the top of hand screw rod lifting platform 1 through triangular support block 12, and moving end installation profile 4 is the same height, fixed end installation profile 3 is the same height.

[0032] Trundle 7: installed on both sides of the bottom of mobile car body 10, so that the equipment is movable.

[0033] Adjusting foot 8: installed on both sides of the bottom of mobile car body 10 close to the outside of trundle 7, used for supporting and leveling when the equipment is fixed.

[0034] Linear guide rail sliding table 5: installed on the top of the moving vehicle body 10 near the bottom of the hand-operated screw rod lifting table 1, the hand-operated screw rod lifting table 1 is installed on the linear guide rail sliding table 5, and the position of the adjustable fixed end mounting profile 3 in the horizontal direction, that is, the X-axis, can be adjusted.

[0035] Stroke limiting device 6: connected between the top of the middle welding frame 9 and the top plate 11, used to limit the stroke range of the wire harness movement, and ensure that the test is carried out within the specified range.

[0036] At the same time, the air cylinder 2 is equipped with a pneumatic control cabinet for controlling the movement frequency of the air cylinder 2, and is connected with the air cylinder 2 through high-quality pneumatic pipelines, so as to ensure stable gas transmission and no leakage, has a pressure adjusting function, can accurately control the output pressure of the air cylinder 2 according to the test requirements, and is also equipped with a safety protection device, which can stop the air cylinder 2 running in time when the air pressure is abnormal or other faults occur, so as to protect the safety of the test equipment and the operator. The pneumatic control cabinet can be arranged in the middle welding frame 9. Specific embodiment two:

[0038] Reference Figures 1-4, the device is conveniently moved to the appropriate test position by using the casters 7 at the bottom of the mobile vehicle body 10. When the device reaches the designated position, the adjusting pads 8 are operated to lower and contact the ground, thereby supporting the device, at which time the casters 7 are lifted off the ground, ensuring that the device is in a stable and fixed state, providing a solid foundation for subsequent test operations. In this process, the adjusting pads 8 play a key leveling role, ensuring the stability of the device during operation, preventing the accuracy of the test results from being affected by the inclination of the device, and carefully confirming the relative positions of the moving end and the fixed end of the wire harness according to the actual vehicle state. The moving end of the wire harness is installed on the moving end mounting profile 4 on both sides of the top plate surface 11, and the fixed end is installed on the fixed end mounting profile 3 on the top of the triangular support block 12. Ensure firm installation to provide reliable connection for subsequent testing, and accurately adjust the position of the stroke limiting device 6 according to the movement stroke of the wire harness, to limit the movement range of the wire harness during the test process, ensuring that the movement stroke is within the error range. At the same time, install the limit controller in cooperation with the stroke limiting device 6, and the stroke limiting device 6 mainly physically limits the movement range of the wire harness.When the wire harness moving end approaches the preset stroke limit position, the mechanical structure of the stroke limiting device 6 triggers a signal, and the limiting controller receives the signal to further accurately control the movement stroke, ensuring that the movement of the wire harness is always within the error range, further improving the accuracy of the movement stroke control capability, ensuring the accuracy and repeatability of the test, the relative position of the fixed end mounting profile 3 in the Z-axis direction is adjusted by the hand-operated screw rod lifting platform 1 to reach the appropriate height required by the wire harness installation and test, and the operator can flexibly adjust the hand-operated screw rod lifting platform 1 according to actual needs to meet the installation height requirements of different wire harnesses, the position of the fixed end mounting profile 3 in the X-axis direction is adjusted by the linear guide rail sliding table 5 to accurately place the wire harness in the correct position in the horizontal direction, the high-precision movement characteristics of the linear guide rail sliding table 5 can ensure the position adjustment accuracy of the wire harness in the X-axis direction, providing accurate horizontal position parameters for the test, the installation position of the sample on the mounting profile is adjusted to realize the adjustment of the Y-axis position, and after the comprehensive adjustment of the X, Y and Z-axis positions, the overall position of the wire harness perfectly meets the test requirements, and the sample is firmly fixed to prevent loosening or displacement during the test process, affecting the reliability of the test results, considering the design characteristics of the equipment that can install two different models of wire harnesses with the same stroke on the left and right, the operator can flexibly select the appropriate wire harness for installation according to the test requirements, and special attention should be paid to ensuring the firmness of the wire harness installation during the installation process to adapt to different test conditions and requirements, the pneumatic control cabinet as the core control component accurately controls the movement frequency of the air cylinder 2 to provide stable power for the flexing movement of the wire harness, the extension and retraction movement of the air cylinder 2 drives the wire harness moving end to reciprocate, highly simulating the flexing situation of the automobile wire harness in actual use, the stroke limiting device 6 plays a crucial role in real-time limiting during the test process, which strictly limits the movement stroke of the wire harness to prevent damage or inaccurate test results due to excessive movement, when the wire harness moving end reaches the limit position set by the stroke limiting device 6, the stroke limiting device 6 will quickly send a signal to the control device, and the control device will immediately adjust the movement direction or stop the movement of the air cylinder 2 according to the preset program, thereby ensuring that the test is always conducted within the specified stroke range, ensuring the effectiveness and reliability of the test data, and the installation counter counts the test times in real time during the entire test process, through accurate recording of the test times, the durability performance of the wire harness after multiple flexing movements can be clearly reflected, and the operator can intuitively observe the value of the counter to understand the test progress and the number of tested wire harnesses at any time, providing important data basis for the analysis and evaluation of test results.

[0039] When the test needs to be carried out inside the environmental cabin, in order to meet the requirements of testing the wiring harness under specific environmental conditions, while ensuring the normal operation of the equipment and the accuracy of the test results, the equipment adopts a special design layout. The action execution component cylinder 2, the hand screw rod lifting platform 1 and the linear guide rail sliding table 5 are placed in the cabin and directly participate in the test operation of the wiring harness, while the pneumatic control cabinet and other controllers are placed outside the cabin. The action execution component and the controller are connected through the cable and pipeline through the hole in the cabin wall. This design not only fully utilizes the special environmental conditions of the environmental cabin for testing, but also ensures that the controller works in a relatively suitable environment, effectively improving the adaptability and reliability of the equipment. When testing in the environmental cabin, the working principle of the equipment is basically the same as in the ordinary environment, but special attention should be paid to the sealing of the cable and pipeline connection, because there may be high temperature, high humidity, high pressure and other special environmental factors in the environmental cabin. If the cable and pipeline connection is not sealed, these factors may have a serious impact on the operation of the equipment and the test results. At the same time, the operator needs to closely monitor and timely adjust the test process in the cabin through the controller outside the cabin to ensure that the test can be carried out smoothly in the special environment and accurate and reliable test data can be obtained.

[0040] In summary:

[0041] 1. In the present equipment, the wheels 7 at the bottom of the mobile vehicle body 10 are used to conveniently move the equipment to the appropriate test position. When the equipment reaches the designated position, the adjusting foot pads 8 are operated to lower and contact the ground, thereby supporting the equipment. At this time, the wheels 7 are lifted off the ground, ensuring that the equipment is in a stable and fixed state, providing a solid foundation for subsequent test operations. In this process, the adjusting foot pads 8 play a key leveling role, ensuring the stability of the equipment during operation, preventing the accuracy of the test results from being affected by the inclination of the equipment, and carefully confirming the relative positions of the moving end and the fixed end of the wiring harness according to the actual vehicle state. The moving end of the wiring harness is installed on the moving end mounting profile 4 on both sides of the top plate 11, and the fixed end is installed on the fixed end mounting profile 3 on the top of the triangular support block 12. Ensure firm installation to provide reliable connection for subsequent testing. According to the movement stroke of the wiring harness, the position of the stroke limiting device 6 is accurately adjusted to limit the movement range of the wiring harness during the test process, ensuring that the movement stroke is within the error range. At the same time, the limiting controller is installed to cooperate with the stroke limiting device 6, further improving the accuracy of the movement stroke control, ensuring the accuracy and repeatability of the test, and adjusting the relative position of the fixed end mounting profile 3 in the Z-axis direction through the hand screw rod lifting platform 1 to achieve the appropriate height required for wiring harness installation and testing.

[0042] 2. When the test needs to be carried out inside the environmental cabin, in order to meet the requirement of testing the wire harness under specific environmental conditions, ensure the normal operation of the equipment and the accuracy of the test results, the equipment adopts a special design layout, the action execution component cylinder 2, the hand screw rod lifting platform 1 and the linear guide rail sliding table 5 are placed in the cabin and directly participate in the test operation of the wire harness, while the pneumatic control cabinet and other controllers are placed outside the cabin, the action execution component and the controller are connected through the cable and pipeline through the hole in the cabin wall, this design not only fully utilizes the special environmental conditions of the environmental cabin for testing, but also ensures that the controller works in a relatively suitable environment, effectively improves the adaptability and reliability of the equipment.

[0043] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can include direct contact between the first and second features, or indirect contact between the first and second features through another feature therebetween. Moreover, the first feature "on", "above" and "on the surface of" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0044] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the present application and do not limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A durability test apparatus for a wiring harness of an automobile, comprising a moving vehicle body (10), characterized by: Both sides of the top of the mobile car body (10) are provided with hand-cranked screw rod lifting platforms (1), the inner sides of the top of the two hand-cranked screw rod lifting platforms (1) are bolt-connected with triangular supporting blocks (12), the top of the triangular supporting block (12) is provided with a fixed-end mounting profile (3), the middle of the top end of the mobile car body (10) is welded with a middle-mounted welding frame (9), the middle of the middle-mounted welding frame (9) is provided with a gas cylinder (2), the top of the middle-mounted welding frame (9) is connected with a top-mounted plate surface (11), and the bottom of the top of the mobile car body (10) near the hand-cranked screw rod lifting platform (1) is provided with a linear guide rail sliding table (5).

2. The automobile wire harness endurance test apparatus according to claim 1, characterized by: Both sides of the top of the top-mounted plate surface (11) are provided with motion-end mounting profiles (4).

3. The automobile wire harness endurance test apparatus according to claim 2, characterized by: Both sides of the bottom of the mobile car body (10) are provided with casters (7), and the outer sides of the bottom of the mobile car body (10) near the casters (7) are provided with adjusting feet (8).

4. The automobile wire harness endurance test apparatus according to claim 1, characterized by: The top of the middle-mounted welding frame (9) and the top-mounted plate surface (11) are connected with stroke limiting devices (6).

5. The automobile wire harness endurance test apparatus according to claim 1, characterized by: The hand-cranked screw rod lifting platform (1) is mounted on the linear guide rail sliding table (5).

6. The automobile wire harness endurance test apparatus according to claim 3, characterized by: The motion-end mounting profiles (4) are of the same height, and the fixed-end mounting profiles (3) are of the same height.

7. The automobile wire harness endurance test apparatus according to claim 6, characterized by: During the movement of the mobile car body (10), the adjusting feet (8) are higher than the positions of the casters (7).

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