Wire harness tensile strength testing device

Abstract

The invention relates to a wire harness tensile strength testing device, and relates to the field of material performance testing, the wire harness tensile strength testing device comprises a rack, the rack is slidably connected with a plurality of clamping devices, each clamping device comprises two sliding seats, the rack is provided with a driving mechanism for driving the sliding seats to move, the sliding seats are provided with clamping mechanisms, and each clamping mechanism comprises a fixed seat, a fixed sleeve, a locking sleeve and the like. A secondary locking mechanism and a pushing assembly are further arranged. A knocking mechanism and a power assembly driving the knocking mechanism to move are further arranged on the rack. During use, the pushing assembly can enable the locking sleeve to clamp a wire harness, the secondary locking mechanism clamps a copper wire, the driving mechanism drives the sliding seat to stretch the wire harness, and the knocking mechanism simulates'stretching + vibration 'stress. The device achieves the technical effects of firmly fixing the wire harness, improving the clamping and testing efficiency, accurately simulating the actual stress scene of the wire harness, accelerating the exposure of hidden defects, and improving the experiment accuracy.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wire harness performance test equipment, in particular to a wire harness tensile strength test device. BACKGROUND

[0002] In modern electrical systems, wire harness plays a very important role, it is like the "collaterals" of electrical equipment, responsible for connecting various electrical components, achieving power and signal transmission. From the complex circuit system of the automobile to various industrial automation equipment, electronic and electrical products, etc., the quality of the wire harness is directly related to whether the entire electrical system can run stably and safely. Therefore, strict detection of wire harness production quality has become a key link to ensure the reliability of electrical systems, and tensile strength test is one of the important indicators for evaluating the quality of wire harness.

[0003] At present, there are many devices for testing the tensile strength of wire harness on the market, and these devices are basically designed to simulate the tensile force that the wire harness may withstand in actual use, and then determine whether its tensile strength meets the corresponding standards. Generally speaking, these test devices mainly include a fixing mechanism, a tensile force applying mechanism, and corresponding measurement display components, etc. The fixing mechanism is used to firmly hold both ends of the wire harness, the tensile force applying mechanism will apply tensile force to the wire harness according to the set rate or force, and the measurement display component is responsible for recording and displaying the relevant data of the wire harness during the tensile process, such as tensile force, wire harness elongation, etc.

[0004] However, in the actual test operation process, the existing wire harness tensile strength test device is prone to falling off during the wire harness test process, and the process of fixing the wire harness is relatively cumbersome, which seriously affects the efficiency of the wire harness production quality detection work and the reliability of the detection results. Therefore, it is an urgent problem to design a device that can conveniently and stably fix the wire harness and facilitate the quick installation of the wire harness. SUMMARY

[0005] In order to fix the wire harness more stably and facilitate the disassembly and installation of the wire harness, the present application provides a wire harness tensile strength test device.

[0006] The wire harness tensile strength test device provided by the present application adopts the following technical scheme:

[0007] The application relates to a wire harness tensile strength testing device which comprises a rack, a plurality of clamping devices slidably connected to the rack, two sliding seats in each clamping device, a driving mechanism arranged on the rack and used for driving the sliding seats to move towards or away from each other, a clamping mechanism arranged on the sliding seat and used for clamping and fixing two ends of the wire harness, a fixed seat fixedly connected to the top of the sliding seat and located on the side of the sliding seat, a fixed sleeve detachably connected to the fixed seat, a locking sleeve inserted into the fixed sleeve, the fixed sleeve and the locking sleeve being concentrically arranged, the wire harness passing through the fixed sleeve and the locking sleeve, the locking sleeve gradually increasing in diameter from the side close to the fixed sleeve to the side away from the fixed sleeve to form a taper surface, a locking groove formed in the outer wall of the locking sleeve, the inner diameter of the fixed sleeve gradually increasing from one end of the locking sleeve, the locking sleeve being inserted into the locking sleeve from the side away from the fixed sleeve, a mounting frame arranged on the side of the sliding seat away from the fixed seat, a secondary locking mechanism arranged in the mounting frame and used for clamping the copper wire at the end of the wire harness, and a pushing assembly arranged on the mounting frame and used for driving the locking sleeve to slide into the fixed sleeve to clamp the wire harness and push the secondary locking mechanism to clamp the copper wire.

[0008] When the user uses the device, the wire harness passes through the locking sleeve and the fixed sleeve, then the pushing assembly is driven to slide the locking sleeve into the fixed sleeve, the taper surface of the locking sleeve facilitates the insertion of the locking sleeve into the fixed sleeve, the locking groove in the outer wall of the locking sleeve not only facilitates the wire harness to pass through the locking sleeve, but also tightly presses the wire harness against the inner wall of the fixed sleeve under the extrusion of the taper surface of the locking sleeve, so that the wire harness is more stably fixed, the secondary locking mechanism clamps the copper wire and the two ends of the wire harness, so that the wire harness is more firmly fixed, the pushing assembly is used to simultaneously lock the wire harness and the copper wire, the clamping efficiency is improved, the wire harness is convenient to disassemble and assemble, and the testing efficiency is improved.

[0009] Optionally, the driving assembly comprises a pushing frame horizontally and slidably connected to the mounting frame, a limiting frame fixedly connected to one end of the pushing frame close to the fixed seat, a limiting groove formed in the limiting frame, a convex edge fixedly connected to the end of the locking sleeve and clamped in the limiting groove, a fixed plate fixedly connected to the top of the pushing frame, a screw rod rotatably connected to the fixed plate and horizontally arranged in the axial direction, the screw rod being threadedly connected to the top of the mounting frame, the end of the screw rod extending out of the top of the mounting frame and fixedly connected to a handle.

[0010] By adopting the technical scheme, when the user rotates the handle, the rotating handle can drive the rotating frame to slide horizontally, and when the wire harness is fixed, the screw rod drives the rotating frame to slide away from the fixed seat, and then the limiting frame drives the locking sleeve to slide out of the fixed sleeve, so that the wire harness can pass through the locking sleeve and the fixed sleeve, then the screw rod is rotated in the opposite direction, the screw rod drives the rotating frame to slide towards the fixed seat, and then drives the locking sleeve to be inserted into the fixed sleeve, the locking sleeve is inserted between the wire harness and the fixed sleeve, the tapered surface of the locking sleeve is matched with the inclined surface of the inner wall of the fixed sleeve, the locking sleeve is subjected to radial extrusion force, the locking groove can make the locking sleeve more easily extruded towards the wire harness, and then the locking sleeve tightly holds the wire harness, so that the wire harness is fixed.

[0011] Optionally, the secondary clamping mechanism comprises an upper clamping plate and a lower clamping plate hinged in the mounting frame, the upper clamping plate and the lower clamping plate are hinged to the inner wall of the mounting frame on the side away from the fixed seat; the top wall and the bottom wall of the rotating frame are provided with a rotating block, the rotating block is located on the side of the rotating frame away from the limiting frame, the side away from the fixed seat of the upper clamping plate and the lower clamping plate is provided with a protrusion, the top wall and the bottom wall of the rotating frame extend to the side away from the fixed seat of the upper clamping plate and the lower clamping plate, and the rotating block is used for cooperating with the protrusion to drive the upper clamping plate and the lower clamping plate to move towards each other or move away from each other to clamp and release the copper wire.

[0012] By adopting the technical scheme, when the user rotates the handle, the rotating handle can drive the rotating frame to slide horizontally, and when the wire harness is fixed, the screw rod drives the rotating frame to slide away from the fixed seat, and then the limiting frame drives the locking sleeve to slide out of the fixed sleeve, so that the wire harness can pass through the locking sleeve and the fixed sleeve, then the screw rod is rotated in the opposite direction, the screw rod drives the rotating frame to slide towards the fixed seat, and then drives the locking sleeve to be inserted into the fixed sleeve, the locking sleeve is inserted between the wire harness and the fixed sleeve, the tapered surface of the locking sleeve is matched with the inclined surface of the inner wall of the fixed sleeve, the locking sleeve is subjected to radial extrusion force, the locking groove can make the locking sleeve more easily extruded towards the wire harness, and then the locking sleeve tightly holds the wire harness, so that the wire harness is fixed.

[0013] Optionally, the side away from the fixed seat of the upper clamping plate and the lower clamping plate is provided with a guide inclined surface, and the side towards the fixed seat of the rotating block is provided with an extrusion inclined surface, the extrusion inclined surface is used for cooperating with the guide inclined surface.

[0014] By adopting the technical scheme, when the user rotates the handle, the rotating handle can drive the rotating frame to slide horizontally, and when the wire harness is fixed, the screw rod drives the rotating frame to slide away from the fixed seat, and then the limiting frame drives the locking sleeve to slide out of the fixed sleeve, so that the wire harness can pass through the locking sleeve and the fixed sleeve, then the screw rod is rotated in the opposite direction, the screw rod drives the rotating frame to slide towards the fixed seat, and then drives the locking sleeve to be inserted into the fixed sleeve, the locking sleeve is inserted between the wire harness and the fixed sleeve, the tapered surface of the locking sleeve is matched with the inclined surface of the inner wall of the fixed sleeve, the locking sleeve is subjected to radial extrusion force, the locking groove can make the locking sleeve more easily extruded towards the wire harness, and then the locking sleeve tightly holds the wire harness, so that the wire harness is fixed.

[0015] Optionally, the side away from the fixed seat of the upper clamping plate and the lower clamping plate is provided with a guide inclined surface, and the side towards the fixed seat of the rotating block is provided with an extrusion inclined surface, the extrusion inclined surface is used for cooperating with the guide inclined surface.

[0016] By adopting the technical scheme, when the user rotates the handle, the rotating handle can drive the rotating frame to slide horizontally, and when the wire harness is fixed, the screw rod drives the rotating frame to slide away from the fixed seat, and then the limiting frame drives the locking sleeve to slide out of the fixed sleeve, so that the wire harness can pass through the locking sleeve and the fixed sleeve, then the screw rod is rotated in the opposite direction, the screw rod drives the rotating frame to slide towards the fixed seat, and then drives the locking sleeve to be inserted into the fixed sleeve, the locking sleeve is inserted between the wire harness and the fixed sleeve, the tapered surface of the locking sleeve is matched with the inclined surface of the inner wall of the fixed sleeve, the locking sleeve is subjected to radial extrusion force, the locking groove can make the locking sleeve more easily extruded towards the wire harness, and then the locking sleeve tightly holds the wire harness, so that the wire harness is fixed.

[0017] Optionally, the driving mechanism comprises a driving motor fixedly connected to the frame, a gear fixedly connected to an output shaft of the driving motor, a transmission wheel rotatably connected to an end of the frame, the transmission wheel being engaged with the gear, and a wire pair fixedly connected to the middle part of the transmission wheel and rotatably connected to the frame, the sliding seat of the clamping device being threadedly connected to the wire pair at a position close to the two ends.

[0018] By adopting the above technical scheme, when a user uses the device, the driving motor works to drive the wire pair to rotate through the gear and the transmission wheel, thereby driving the sliding seat to move away from each other or move towards each other, and when the sliding seat moves away from each other, the two ends of the wire harness are driven to move to the two sides, thereby stretching the wire harness, accurately simulating the actual stress scenario of the wire harness, and ensuring that the test result can truly reflect the mechanical properties of the wire harness and the effectiveness of the test result.

[0019] Optionally, the frame is provided with a knocking mechanism, the knocking mechanism comprises a positioning frame slidably connected to the frame, a power assembly provided on the frame and configured to drive the positioning frame to reciprocate along the length direction of the wire harness, the positioning frame is provided with a support frame, the support frame is provided with a knocking motor, an output shaft of the knocking motor is fixedly connected with a driving wheel, an eccentric position of the driving wheel is fixedly connected with a knocking rod, and the knocking rod extends below the wire harness.

[0020] By adopting the above technical scheme, when a user uses the device, the driving motor works to drive the wire pair to rotate through the gear and the transmission wheel, thereby driving the sliding seat to move away from each other or move towards each other, and when the sliding seat moves away from each other, the two ends of the wire harness are driven to move to the two sides, thereby stretching the wire harness, accurately simulating the actual stress scenario of the wire harness, and ensuring that the test result can truly reflect the mechanical properties of the wire harness and the effectiveness of the test result.

[0021] Optionally, the power assembly comprises a bidirectional reciprocating screw rotatably connected to the frame, the positioning frame is threadedly connected to the bidirectional reciprocating screw, the frame is fixedly connected with a power motor, and an output shaft of the power motor is fixedly connected with the bidirectional reciprocating screw.

[0022] By adopting the above technical scheme, when a user uses the device, the driving motor works to drive the wire pair to rotate through the gear and the transmission wheel, thereby driving the sliding seat to move away from each other or move towards each other, and when the sliding seat moves away from each other, the two ends of the wire harness are driven to move to the two sides, thereby stretching the wire harness, accurately simulating the actual stress scenario of the wire harness, and ensuring that the test result can truly reflect the mechanical properties of the wire harness and the effectiveness of the test result.

[0023] Optionally, the top of the positioning frame is rotatably connected with a threaded column, the threaded column is vertically arranged in the axial direction, the threaded column is threadedly connected with an adjusting block, and the power motor is fixedly connected to the adjusting block.

[0024] By adopting the technical scheme, when a user uses, the position of the adjusting block can be adjusted vertically by screwing the threaded column, and then the distance between the knocking rod and the wire harness is adjusted, and the accuracy of the knocking of the knocking rod on the wire harness can be adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic diagram of the overall mechanism of the embodiment of the present application;

[0026] Figure 2 is a sectional view of the embodiment of the present application;

[0027] Figure 3 is Figure 2 is an enlarged view of part A of

[0028] Figure 4 is an exploded view of the clamping mechanism;

[0029] Figure 5 is an exploded view for highlighting the pushing assembly;

[0030] Figure 6 is a schematic diagram of the overall structure of the knocking mechanism;

[0031] Figure 7 is a sectional view of the knocking mechanism.

[0032] BRIEF DESCRIPTION OF DRAWINGS: 1, rack; 11, cover door; 2, clamping device; 21, sliding seat; 22, mounting frame; 23, clamping mechanism; 231, fixed seat; 232, fixed sleeve; 233, locking sleeve; 2331, locking groove; 2332, convex edge; 24, secondary locking mechanism; 241, upper clamping plate; 242, lower clamping plate; 243, protrusion; 244, guide inclined surface; 25, pushing assembly; 251, shifting frame; 252, limiting frame; 253, limiting groove; 254, fixed plate; 255, screw; 256, handle; 257, shifting block; 258, extrusion inclined surface; 259, clamping rod; 2591, anti-slip edge; 3, driving mechanism; 31, driving motor; 32, transmission wheel; 33, wire; 4, knocking mechanism; 41, positioning frame; 42, support frame; 43, knocking motor; 44, driving wheel; 45, knocking rod; 46, power assembly; 461, bidirectional reciprocating screw; 462, power motor; 47, threaded column; 471, adjusting block. DETAILED DESCRIPTION

[0033] The following will be described in detail in combination with the accompanying Figures 1-7 The present application is further described in detail.

[0034] In this application, unless specifically defined otherwise, the terms "mounting", "connected", "connection", "fixed", and the like should be construed broadly and can be either fixed connections or detachable connections, or integral; can be mechanical connection, or electrical connection, or communication; can be direct connection, or indirect connection through intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] In this application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0036] The embodiment of the present application discloses a kind of harness tensile strength testing device, referring to Figure 1 And Figure 2 , including rack 1, a plurality of sets of clamping devices 2 and drive mechanism 3 for driving clamping mechanism 23 sliding are arranged on rack 1, each set of clamping device 2 includes two sliding seats 21, fixed seat 231 is arranged on sliding seat 21, mounting frame 22, clamping mechanism 23, secondary locking mechanism 24 and push assembly 25, wherein drive mechanism 3 is arranged on rack 1 for driving sliding seat 21 to move towards or away, clamping mechanism 23 is arranged on sliding seat 21 for clamping and fixing the two ends of harness, secondary locking mechanism 24 is arranged in mounting frame 22 for clamping the copper wire of the end of multi-harness, push assembly 25 is arranged on mounting frame 22 for driving locking sleeve 233 to slide into fixed sleeve 232 to clamp harness and push secondary locking mechanism 24 to clamp copper wire, two clamping is achieved to harness, make harness fixed more firmly, improve clamping efficiency, facilitate harness disassembly and installation, and then improve the effect of test efficiency. This is because two clamping methods increase the stability of harness fixation, and push assembly 25 controls two locking actions at the same time, which simplifies the operation process.

[0037] Wherein, one side of rack 1 is hinged with cover door 11, cover door 11 is used for buckling on the top of rack 1.

[0038] Specifically, the sliding seat 21 is slidingly connected to the rack 1. The sliding seat 21 is generally made of metal and has certain strength and wear resistance to ensure that it will not be easily damaged during long-term use. The shape is generally a cuboid, which facilitates sliding movement on the rack 1 and can provide stable support for subsequent installation of other components. In some special cases, other shapes of sliding seats 21 can also be used as long as they can meet the sliding and installation requirements.

[0039] The driving mechanism 3 includes a driving motor 31 fixedly connected to the rack 1, a gear fixedly connected to the output shaft of the driving motor 31, a transmission wheel 32 rotatably connected to the end of the rack 1, the transmission wheel 32 and the gear being engaged, a pair of wires 33 fixedly connected to the middle of the transmission wheel 32, the pair of wires 33 being rotatably connected to the rack 1, and the sliding seat 21 of the clamping device 2 being threadedly connected to the pair of wires 33 near the two ends. The driving motor 31 is generally a stepper motor, which can accurately control the rotational speed and torque, thereby achieving accurate control of the movement of the sliding seat 21. The gear and the transmission wheel 32 are generally made of metal and are precisely machined to ensure the accuracy and stability of transmission. The thread design of the pair of wires 33 is optimized according to actual needs to ensure that the sliding seat 21 can move towards or away from each other smoothly under the rotation of the pair of wires 33. When the driving motor 31 is working, the pair of wires 33 is driven to rotate through the gear and the transmission wheel 32, thereby driving the sliding seat 21 to move away from or towards each other. When the sliding seat 21 moves away from each other, it can drive the two ends of the wire harness to move in the direction of the two sides, thereby stretching the wire harness and accurately simulating the actual stress scenario of the wire harness. This ensures that the test results can truly reflect the mechanical properties of the wire harness and ensure the effectiveness of the test results.

[0040] Referring to Figure 3 and Figure 4The clamping mechanism 23 comprises a fixed seat 231 fixedly connected to the top of the sliding seat 21, the fixed seat 231 being located on the side of the sliding seat 21 facing each other, the fixed seat 231 being detachably connected with a fixed sleeve 232, the fixed sleeve 232 being inserted with a locking sleeve 233, the fixed sleeve 232 and the locking sleeve 233 being concentrically arranged, the wire harness passing through the fixed sleeve 232 and the locking sleeve 233, the locking sleeve 233 gradually increasing in diameter from the side close to the fixed sleeve 232 to the side away from the fixed sleeve 232 to form a tapered surface, the outer side wall of the locking sleeve being provided with a locking groove 2331, the inner diameter of the fixed sleeve 232 gradually increasing from one end of the locking sleeve 233, and the locking sleeve 233 being inserted into the locking sleeve 233 from the side away from the fixed sleeve 232. The fixed seat 231 is generally made of high-strength plastic or metal material to ensure that it can be firmly installed on the sliding seat 21. The fixed sleeve 232 and the locking sleeve 233 are generally made of metal material and have certain hardness and toughness. The tapered surface of the locking sleeve 233 allows it to better cooperate with the inner wall of the fixed sleeve 232 when inserted into the fixed sleeve 232, and can more effectively hold the wire harness when subjected to extrusion. The locking groove 2331 not only facilitates the passage of the wire harness, but also increases the friction between the locking sleeve 233 and the wire harness during locking, improving the fixing effect.

[0041] The secondary locking mechanism 24 comprises an upper clamping plate 241 and a lower clamping plate 242 hingedly connected in the mounting frame 22, the upper clamping plate 241 and the lower clamping plate 242 being hingedly connected to the inner wall of the mounting frame 22 away from the fixed seat 231. The upper clamping plate 241 and the lower clamping plate 242 are generally made of metal material and the surface is treated to be smooth to reduce damage to the wire harness. Their hinged manner allows them to rotate flexibly when subjected to external force, achieving clamping and loosening of the copper wire.

[0042] Referring to Figure 3 and Figure 5The pushing assembly 25 comprises a pushing frame 251 horizontally slidingly connected in the mounting frame 22, the pushing frame 251 is fixedly connected with a limiting frame 252 at one end close to the fixed seat 231, the limiting frame 252 is provided with a limiting slot 253, the end of the locking sleeve 233 is fixedly connected with a convex edge 2332, the convex edge 2332 is clamped in the limiting slot 253; the top of the pushing frame 251 is fixedly connected with a fixed plate 254, the fixed plate 254 is rotatably connected with a screw rod 255, the axial direction of the screw rod 255 is horizontally arranged, the screw rod 255 is threadedly connected with the top of the mounting frame 22, the end of the screw rod 255 extends out of the top of the mounting frame 22 and is fixedly connected with a handle 256. The pushing frame 251 is usually made of metal material and has good rigidity, so that the pushing frame 251 can stably slide in the horizontal direction. The design of the limiting frame 252 and the limiting slot 253 can accurately transmit the movement of the pushing frame 251 to the locking sleeve 233, so that the locking sleeve 233 can move in the expected manner. The combination of the screw rod 255 and the handle 256 facilitates user operation, and the sliding of the pushing frame 251 can be easily controlled by rotating the handle 256.

[0043] The top wall and the bottom wall of the pushing frame 251 are provided with a pushing block 257, the side of the pushing block 257 away from the limiting frame 252, the side of the upper clamping plate 241 and the lower clamping plate 242 away from each other is provided with a convex 243, the top wall and the bottom wall of the pushing frame 251 extend to the side of the upper clamping plate 241 and the lower clamping plate 242 away from each other, the pushing block 257 is used for cooperating with the convex 243 to push the upper clamping plate 241 and the lower clamping plate 242 to move towards each other or away from each other to clamp and release the copper wire; when the screw rod 255 drives the pushing frame 251 to slide towards the fixed seat 231, the pushing block 257 pushes the convex 243, so that the upper clamping plate 241 and the lower clamping plate 242 move towards each other to clamp and fix the copper wire, thereby realizing the synchronous fixing and releasing of the wire harness and the copper wire. The side away from the convex 243 is provided with a guide inclined surface 244, the side of the pushing block 257 towards each other is provided with a extrusion inclined surface 258, the extrusion inclined surface 258 is used for cooperating with the guide inclined surface 244; when the pushing block 257 slides horizontally towards the fixed seat 231, the extrusion inclined surface 258 slides along the guide inclined surface 244, so that the upper clamping plate 241 and the lower clamping plate 242 are pushed to rotate towards each other around the hinge point of the mounting frame 22, thereby fixing the copper wire by the upper clamping plate 241 and the lower clamping plate 242, and secondarily fixing the end of the wire harness. The opposite side of the upper clamping plate 241 and the lower clamping plate 242 is provided with a clamping rod 259, the opposite side of the clamping rod 259 is provided with a plurality of anti-skid edges 2591; when the upper clamping plate 241 and the lower clamping plate 242 clamp and fix the copper wire, the anti-skid edges 2591 can increase the friction between the clamping rod 259 and the copper wire, so that the copper wire is fixed more firmly.

[0044] Referring toFigure 6 and Figure 7 The rack 1 is provided with a knocking mechanism 4, the knocking mechanism 4 comprises a positioning frame 41 slidably connected to the rack 1, the rack 1 is provided with a power assembly 46 for driving the positioning frame 41 to reciprocate along the length direction of the wire harness, the positioning frame 41 is provided with a support frame 42, the support frame 42 is provided with a knocking motor 43, the output shaft of the knocking motor 43 is fixedly connected with a driving wheel 44, the eccentric position of the driving wheel 44 is fixedly connected with a knocking rod 45, the knocking rod 45 extends to the lower side of the wire harness. The power assembly 46 comprises a bidirectional reciprocating screw 461 rotatably connected to the rack 1, the positioning frame 41 is threadedly connected to the bidirectional reciprocating screw 461, the rack 1 is fixedly connected with a power motor 462, the output shaft of the power motor 462 is fixedly connected with the bidirectional reciprocating screw 461. The top of the positioning frame 41 is rotatably connected with a threaded column 47, the threaded column 47 is vertically arranged in the axial direction, the threaded column 47 is threadedly connected with an adjusting block 471, the power motor 462 is fixedly connected to the adjusting block 471. The positioning frame 41 is generally made of metal material, has good rigidity and stability, and can smoothly slide along the length direction of the wire harness under the driving of the bidirectional reciprocating screw 461. The bidirectional reciprocating screw 461 is precisely machined, and the thread design thereof can ensure that the positioning frame 41 realizes accurate reciprocating motion. The power motor 462 selects a motor with appropriate power to ensure that the bidirectional reciprocating screw 461 can normally rotate. The rotating speed and torque of the knocking motor 43 are adjusted according to actual requirements to control the knocking frequency and intensity of the knocking rod 45. The eccentric design of the driving wheel 44 enables the knocking rod 45 to realize intermittent knocking action. The combination of the threaded column 47 and the adjusting block 471 can conveniently adjust the distance between the knocking rod 45 and the wire harness to meet different test requirements.

[0045] The implementation principle of the embodiment is that the wire harness tensile strength testing device of the embodiment realizes stable fixing and rapid installation of the wire harness through unique structural design. The setting of the double clamping mechanisms 23, i.e., the fixing of the clamping mechanisms 23 to the entire wire harness and the fixing of the secondary locking mechanisms 24 to the copper wires, greatly improves the stability of the fixing of the wire harness and avoids the problem of wire harness falling off during the test. The application of the pushing assembly 25 enables the user to simultaneously complete the locking of the wire harness and the copper wires through simple operation, improves the clamping efficiency, and reduces the test time. The driving mechanism 3 can accurately simulate the actual stress scenario of the wire harness, ensuring the reliability of the test results. This design improves the problems of wire harness falling off and complicated fixing in the prior art, improves the efficiency of wire harness production quality detection work and the reliability of the detection results.

[0046] The arrangement of the knocking mechanism 4 enables the test device to simulate the superimposed "tension + vibration" stress conditions in actual use. Under the drive of the power assembly 46, the knocking rod 45 can knock at different positions along the wire harness, while the knocking motor 43 intermittently knocks the wire harness with the knocking rod 45. The application of such a composite load is closer to the real use environment, which can accelerate the exposure of hidden defects in the wire harness connection parts, verify the anti-fatigue and anti-loose performance under the composite load. By adjusting the position and knocking force of the knocking rod 45, the performance of the wire harness under different conditions can be more comprehensively tested, ensuring that the wire harness can not only withstand the tensile force, but also maintain the stability of the structure and function in the actual complex environment. This improvement further improves the practicality of the test device and the accuracy of the test results, providing a more effective means for the quality detection of the wire harness.

[0047] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A wire harness tensile strength testing device, comprising a rack (1), characterized in that: a plurality of clamping devices (2) are slidably connected to the rack (1); each set of clamping devices (2) comprises two sliding seats (21), and a driving mechanism (3) is arranged on the rack (1) to drive the sliding seats (21) to move towards or away from each other, and the sliding seats (21) are provided with clamping mechanisms (23) of the same structure, which are used to clamp and fix both ends of the wire harness; the clamping mechanism (23) comprises a fixed seat (231) fixedly connected to the top of the sliding seat (21), the fixed seat (231) is located on one side of the sliding seat (21) facing each other, a fixed sleeve (232) is detachably connected in the fixed seat (231), a locking sleeve (233) is inserted into the fixed sleeve (232), the fixed sleeve (232) and the locking sleeve (233) are concentrically arranged, the wire harness passes through the fixed sleeve (232) and the locking sleeve (233), the locking sleeve (233) is formed into a tapered surface with gradually increasing diameter from the side close to the fixed sleeve (232) to the side away from the fixed sleeve (232), a locking groove (2331) is formed on the outer side wall of the locking sleeve (233), the inner diameter of the fixed sleeve (232) gradually increases from one end of the locking sleeve (233), the locking sleeve (233) is inserted into the locking sleeve (233) from the side away from the fixed sleeve (232), the sliding seat (21) located on the side away from the fixed seat (231) is provided with a mounting frame (22), the mounting frame (22) is provided with a secondary locking mechanism (24) for clamping the copper wires at the ends of the wire harness, and the mounting frame (22) is provided with a pushing assembly (25) for driving the locking sleeve (233) to slide into the fixed sleeve (232) to clamp the wire harness and push the secondary locking mechanism (24) to clamp the copper wires.

2. The wire harness tensile strength testing device according to claim 1, characterized in that: the driving assembly comprises a shifting frame (251) horizontally slidably connected in the mounting frame (22), one end of the shifting frame (251) close to the fixed seat (231) is fixedly connected with a limiting frame (252), the limiting frame (252) is provided with a limiting groove (253), the end of the locking sleeve (233) is fixedly connected with a protruding edge (2332), and the protruding edge (2332) is connected in the limiting groove (253); the top of the shifting frame (251) is fixedly connected with a fixed plate (254), the fixed plate (254) is rotatably connected with a screw rod (255), the axial direction of the screw rod (255) is horizontally arranged, the screw rod (255) is threadedly connected to the top of the mounting frame (22), and the end of the screw rod (255) extends out of the top of the mounting frame (22) and is fixedly connected with a handle (256).

3. A wire harness tensile strength testing apparatus as defined in claim 2, wherein: the secondary clamping mechanism (23) comprises an upper clamping plate (241) and a lower clamping plate (242) hinged in the mounting frame (22), and one side of the upper clamping plate (241) and the lower clamping plate (242) away from the fixed seat (231) is hinged to the inner wall of the mounting frame (22). The top wall and the bottom wall of the dial frame (251) are provided with a dial block (257), the dial block (257) is located on the side of the dial frame (251) away from the limiting frame (252), the side of the upper clamping plate (241) and the lower clamping plate (242) away from each other is provided with a protrusion (243), the top wall and the bottom wall of the dial frame (251) extend to the side of the upper clamping plate (241) and the lower clamping plate (242) away from each other, and the dial block (257) is used for cooperating with the protrusion (243) to push the upper clamping plate (241) and the lower clamping plate (242) to move towards each other or away from each other to clamp and loosen the copper wire.

4. A wire harness tensile strength testing apparatus as defined in claim 3, wherein: The protrusion (243) is provided with a guide inclined surface (244) on the side away from each other, and the dial block (257) is provided with an extrusion inclined surface (258) on the side towards each other, and the extrusion inclined surface (258) is used for cooperating with the guide inclined surface (244).

5. A wire harness tensile strength testing apparatus as defined in claim 3, wherein: The upper clamping plate (241) and the lower clamping plate (242) are provided with a clamping rod (259) on the opposite side, and the clamping rod (259) is provided with a plurality of anti-skid edges (2591) on the opposite side.

6. A wire harness tensile strength testing apparatus as defined in claim 1, wherein: The driving mechanism (3) comprises a driving motor (31) fixedly connected to the rack (1), a gear fixedly connected to the output shaft of the driving motor (31), a transmission wheel (32) rotatably connected to the end of the rack (1), the transmission wheel (32) and the gear being engaged, a pair of wires (33) fixedly connected to the middle of the transmission wheel (32), the pair of wires (33) being rotatably connected to the rack (1), and the sliding seat (21) of the clamping device (2) being threadedly connected to the positions of the pair of wires (33) close to the two ends.

7. The wire harness tensile strength testing device according to claim 1, wherein: The rack (1) is provided with a knocking mechanism (4); The knocking mechanism (4) comprises a positioning frame (41) slidably connected to the rack (1), a power assembly (46) provided on the rack (1) and configured to drive the positioning frame (41) to reciprocate along the length direction of the wire harness, a support frame (42) provided on the positioning frame (41), a knocking motor (43) provided on the support frame (42), a driving wheel (44) fixedly connected to the output shaft of the knocking motor (43), and a knocking rod (45) fixedly connected to the eccentric position of the driving wheel (44) and extending below the wire harness.

8. A wire harness tensile strength testing apparatus as defined in claim 7, wherein: The power assembly (46) comprises a bidirectional reciprocating lead screw (461) rotatably connected to the rack (1), the positioning frame (41) being threadedly connected to the bidirectional reciprocating lead screw (461), a power motor (462) fixedly connected to the rack (1), and the output shaft of the power motor (462) and the bidirectional reciprocating lead screw (461) being fixedly connected.

9. A wire harness tensile strength testing apparatus as defined in claim 7, wherein: The top of the positioning frame (41) is rotatably connected with a threaded column (47), the threaded column (47) is vertically arranged in the axial direction, the threaded column (47) is threadedly connected with an adjusting block (471), and the power motor (462) is fixedly connected to the adjusting block (471).

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