CN218496659U - Wire harness fatigue testing device - Google Patents

Abstract

The utility model belongs to the technical field of the pencil check out test set, specifically provide a pencil fatigue test equipment. The utility model discloses aim at solving the current pencil fatigue degree check out test set detection efficiency low and the big problem of being not convenient for remove the use of being convenient for of volume. Therefore, the utility model discloses a pencil fatigue test equipment includes fixing device, pencil fixed subassembly, twists reverse test mechanism and bending test mechanism; the fixed subassembly of pencil sets up to locking fixedly with the pencil that passes, twists reverse the accredited testing organization and sets up to fix the one end of pencil and can drive the pencil and carry out circumferential direction so that the pencil takes place to twist, and the accredited testing organization that bends sets up to fix the other end of pencil and can drive the pencil and control reciprocal the rocking so that the pencil takes place to bend. The utility model discloses a pencil fatigue test equipment's compact structure, it is small, conveniently remove the use to can twist reverse the fatigue test and bend the fatigue test to the pencil simultaneously, detection efficiency is high.

Description

Wire harness fatigue testing device

Technical Field

The utility model belongs to the technical field of the pencil check out test set, specifically provide a pencil fatigue test equipment.

Background

Wire harnesses are a generic term for optical cables, electric cables, network cables, O-belts and the like. The wire harness has many uses, is mainly used for controlling installation, connecting equipment, transmitting electric power and the like, and is a common and indispensable thing in daily life.

The fatigue of the wire harness is caused by bending and/or twisting of the wire harness, so that the wire harness is broken by the surface skin or even the wire harness after being used for a long time, and safety accidents or communication faults are easily caused. Especially, in a low-temperature or ultra-low-temperature environment, the wire harness is more likely to be broken, so that the equipment stops operating, and further, the loss is caused. And under the low temperature environment, can't in time maintain, need wait the temperature to rise again after the maintenance, it is troublesome to maintain. Therefore, for the wire harness applied to the low-temperature environment, the testing equipment is required to be used for detecting the torsional fatigue strength and the bending fatigue strength of the wire harness, and then the wire harness which can adapt to the low-temperature environment is selected for use, so that the fatigue probability of the wire harness is reduced, and the maintenance probability is reduced.

The testing equipment for detecting the fatigue degree of the wiring harness in the prior art is large in size and inconvenient to move to a low-temperature environment for use; in addition, the existing testing equipment needs to separately test the bending fatigue strength and the torsion fatigue strength when the wire harness is tested, and the testing efficiency is low.

Accordingly, there is a need in the art for a new solution to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving above-mentioned technical problem, promptly, solve current pencil fatigue test equipment's detection efficiency low and bulky, be not convenient for remove the problem of use.

The utility model provides a wire harness fatigue test device, which comprises a fixing device, a wire harness fixing component, a torsion test mechanism and a bending test mechanism, wherein the wire harness fixing component, the torsion test mechanism and the bending test mechanism are arranged on the fixing device; the fixed subassembly of pencil sets up to locking fixedly so that the both ends of pencil that can pass are faced respectively twist reverse accredited testing organization with the accredited testing organization of bending extends, twist reverse accredited testing organization and set up to fix the one end of pencil and can drive the pencil and carry out circumferential direction so that the pencil twists reverse the fatigue strength of twisting that twists with the test pencil, the accredited testing organization of bending sets up to fixing the other end of pencil and can drive the pencil and control reciprocal the rocking so that the pencil takes place to bend with the fatigue strength of bending of test pencil.

In the preferable technical scheme of the wire harness fatigue testing device, the fixing device comprises a frame, and a first fixing plate and a second fixing plate which are arranged on the frame, the first fixing plate and the second fixing plate are vertically arranged, the torsion testing mechanism is arranged on the first fixing plate, the bending testing mechanism is arranged on the second fixing plate, and the wire harness fixing assembly is arranged on the first fixing plate or the second fixing plate and is arranged between the torsion testing mechanism and the bending testing mechanism so that two ends of the fixed wire harness can extend outwards and are respectively fixed by the torsion testing mechanism and the bending testing mechanism.

In a preferred embodiment of the above wire harness fatigue testing device, the wire harness fixing assembly includes a fixing frame mounted on the first fixing plate or the second fixing plate, and a first fixing member and a second fixing member mounted on the fixing frame, the first fixing member and the second fixing member are disposed opposite to each other with a gap formed therebetween, and the wire harness is located in the gap and is clamped and fixed by the first fixing member and the second fixing member.

In a preferred technical solution of the above wire harness fatigue testing apparatus, the torsion testing mechanism includes a first driving member mounted on the first fixing plate, a turntable member in driving connection with the first driving member, and a first pressing block mounted on the turntable member, the first driving member can drive the turntable member to rotate along a circumferential direction of the turntable member, and a first pressing seam is formed between the first pressing block and the turntable member so as to press and fix the wire harness.

In a preferred technical solution of the above wire harness fatigue testing apparatus, the gap is located right above the center of the turntable member so that the distance between the gap and the first pressing gap is kept consistent in the process that the wire harness rotates with the turntable member along the circumferential direction of the turntable member, thereby preventing the wire harness fixing assembly from generating a tensile force on the wire harness.

In a preferred technical solution of the above wire harness fatigue testing apparatus, the bending testing mechanism includes a driving swing link, a first swing member, a second press block, and a second driving member mounted on the second fixing plate; one end of the driving swing rod is pivotally connected with the second fixing plate; the second driving member is in driving connection with the first swinging member and can drive the first swinging member to rotate circumferentially; the first swinging component is movably connected with the driving swinging rod so that the first swinging component can drive the other end of the driving swinging rod to swing left and right in a reciprocating manner in the circumferential rotating process; the second swinging component is movably connected with the driving swing rod so that the driving swing rod can drive the second swinging component to swing left and right in a reciprocating swing process; the second pressing block is installed on the second swinging component and fixes the wire harness between the second swinging component and the second pressing block so that the wire harness is bent in the process of swinging left and right along with the second swinging component.

In a preferred technical solution of the above wire harness fatigue testing apparatus, the driving swing link, the first swing member, and the second driving member are all located at a rear side of the second fixed plate, the second swing member includes a first sub-swing member located at a rear side of the second fixed plate, a second sub-swing member located at a front side of the second fixed plate, a bearing seat fixedly mounted on the second fixed plate, and a connecting member rotatably disposed in the bearing seat, the first sub-swing member is movably connected to the driving swing link so that the driving swing link can drive the first sub-swing member to swing reciprocally left and right in the process of swinging reciprocally left and right, and two ends of the connecting member are respectively fixedly connected to the first sub-swing member and the second sub-swing member so that the first sub-swing member can drive the second sub-swing member to swing reciprocally left and right through the connecting member in the process of swinging reciprocally left and right; the second pressing block is installed on the second sub-swinging member, a second pressing seam is formed between the second pressing block and the second sub-swinging member so as to press, hold and fix the wire harness, and the wire harness can be bent in the process of swinging left and right along with the second sub-swinging member.

In a preferred technical scheme of the wire harness fatigue testing device, a moving through groove extending along the length of the driving swing rod is formed in the driving swing rod, a first rotating column is arranged at one end of the first swinging member, and the first rotating column is arranged in the moving through groove and can reciprocate along the length direction of the moving through groove in the circumferential rotating process of the first swinging member so as to drive the other end of the driving swing rod to swing left and right in a reciprocating manner; and a second rotating column is arranged at one end of the first sub-swinging member, is arranged in the moving through groove and can reciprocate along the length direction of the moving through groove in the process of reciprocating the driving swing rod left and right, so that the first sub-swinging member can reciprocate left and right with the central line of the bearing seat as an axis.

In a preferable embodiment of the above wire harness fatigue testing device, an axis of the swing link, an axis of the first swing member, and an axis of the second swing member, which reciprocate back and forth in the left-right direction, are located in the same plane.

In a preferred embodiment of the above wire harness fatigue testing device, the crack is located right in front of an axis of the second swing member swinging to and fro left and right and is arranged at the same height as the axis of the second swing member swinging to and fro left and right, so that the distance between the crack and the second press crack is kept consistent during the process of the wire harness swinging to and fro left and right along with the second swing member, thereby preventing the wire harness fixing assembly from generating tension on the wire harness.

Under the condition of adopting the technical scheme, the wire harness fatigue testing equipment of the utility model fixes the wire harness by arranging the wire harness fixing component on the fixing device, so that two ends of the wire harness respectively extend towards the torsion testing mechanism and the bending testing mechanism and are respectively fixed with the torsion testing mechanism and the bending testing mechanism, and the wire harness can simultaneously carry out the torsion fatigue strength test and the bending fatigue strength test, thereby effectively improving the detection efficiency; in addition, the size of the whole equipment can be reduced by the arrangement mode, so that the equipment is convenient to move and convenient to place in a low-temperature environment for use, and the wire harness can be detected in the low-temperature environment so as to be better suitable for being used in the low-temperature environment.

Further, the fixing device is arranged into a frame, and a first fixing plate and a second fixing plate which are arranged on the frame are arranged vertically, wherein the torsion testing mechanism and the bending testing mechanism are respectively arranged on the first fixing plate and the second fixing plate, and the wire harness fixing assembly is arranged between the torsion testing mechanism and the bending testing mechanism; the setting mode enables the structure of the whole equipment to be more compact, the size of the whole equipment can be further reduced, and therefore the equipment is smaller and more exquisite.

Still further, the wire harness fixing assembly is provided as a fixing frame, a first fixing component and a second fixing component which are arranged on the fixing frame, a gap is formed between the first fixing component and the second fixing component, and the wire harness is clamped and fixed in the gap by the first fixing component and the second fixing component; the clamping device is simple in structure, good in clamping and fixing effects and convenient to install and use.

Still further, the torsion testing mechanism is provided with a first driving piece, a turntable component and a first pressing block, the first driving piece can drive the turntable component to rotate in the circumferential direction, a first pressing seam is formed between the first pressing block and the turntable component to press and fix the wire harness, and the wire harness can be twisted when rotating along with the turntable component.

Furthermore, the crack is positioned right above the center of the turntable component, so that the distance between the crack and the first pressing seam can be kept consistent, and the situation that the wire harness fixing assembly generates tension on the wire harness in the twisting process of the wire harness can be avoided; this setting mode can guarantee the accuracy of the detection result of the torsional fatigue strength of pencil.

Still further, the bending testing mechanism is set to be a driving swing rod, a first swing component, a second pressing block and a second driving component, the second driving component is in driving connection with the first swing component so as to drive the first swing component to rotate circumferentially, the first swing component can drive one end of the driving swing rod to swing left and right in a reciprocating mode when rotating circumferentially, and therefore the driving swing rod can drive the second swing component to swing left and right in a reciprocating mode, and the second swing component can drive the wire harness to swing left and right in a reciprocating mode when swinging left and right so as to be bent; this setting mode, through the mating reaction of each component, convert the circumferential direction of first swing component into the side-to-side rocking of second swing component to can drive the pencil and take place to bend, with the fatigue strength that detects to bend, simple structure, transmission effect is good, convenient to use.

Still further, the driving swing link, the first swing member and the second driving member are disposed at the rear side of the second fixed plate, the second swing member is disposed as a first sub swing member, a second sub swing member, a bearing housing and a connecting member, the first sub swing member is disposed at the rear side of the second fixed plate, and the second sub swing member is disposed at the front side of the second fixed plate; this mode of setting up can save the space better, makes the space rationally utilize, simultaneously, installs the second briquetting on the sub-swing component of second and is formed with the second and presses the seam, can fix the pencil to reduce the second and press the seam and the fixed subassembly of pencil between the distance, further reduce the volume of equipment.

Furthermore, a moving through groove is formed in the driving swing rod, a first rotary column is arranged at one end of the first swinging component, a second rotary column is arranged at one end of the first sub-swinging component, the first rotary column and the second rotary column are arranged in the moving through groove, the first rotary column is driven to move in the moving through groove when the first swinging component rotates in the circumferential direction, so that the driving swing rod is driven to swing left and right in a reciprocating manner, and the second rotary column can move in the moving through groove by the driving swing rod swinging left and right in a reciprocating manner, so that the first sub-swinging component is driven to swing left and right in a reciprocating manner; this setting mode, simple structure, transmission effect is good to can control and sway the range.

Still further, the axis for driving the swing rod to swing left and right in a reciprocating manner, the axis for the first swinging member to rotate in the circumferential direction and the axis for the second swinging member to swing left and right in a reciprocating manner are arranged in the same plane, so that the swinging amplitude of the driving swing rod can be better controlled, and the swinging amplitude of the second swinging member can be further controlled, and the size of the equipment is further reduced, so that the equipment can be conveniently moved and used.

Still further, the crack is arranged right in front of the axis of the second swinging member for reciprocating left and right, and is arranged at the same height with the axis of the second swinging member for reciprocating left and right.

Drawings

Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

fig. 1 is a first structural schematic diagram of the wire harness fatigue testing device of the present invention;

fig. 2 is a schematic structural diagram ii of the wire harness fatigue testing apparatus of the present invention;

FIG. 3 is an enlarged schematic view at A in FIG. 1;

fig. 4 is a rear view of the harness fatigue testing apparatus of the present invention;

FIG. 5 isbase:Sub>A sectional view taken along line A-A of FIG. 4;

fig. 6 is a schematic structural view of the torsion testing mechanism of the present invention, showing a first fixing plate;

fig. 7 is a first schematic structural diagram of the bending test mechanism of the present invention, in which a second fixing plate is shown;

fig. 8 is a second schematic structural diagram of the bending test mechanism of the present invention, in which a second fixing plate is shown.

List of reference numerals：

1. A fixing device; 11. a frame; 12. a first fixing plate; 13. a second fixing plate; 2. a wire harness fixing assembly; 21. a fixed mount; 22. a first fixing member; 23. a second fixing member; 3. a torsion testing mechanism; 31. a first drive member; 32. a turntable member; 33. a first pressing block; 34. first seam pressing; 4. a bending test mechanism; 41. a second drive member; 42. driving a swing rod; 421. moving the through groove; 43. a first swing member; 431. a first rotating column; 44. a second swing member; 441. a first sub-swing member; 4411. a second rotary column; 442. a second sub-swing member; 443. a bearing seat; 444. a connecting member; 45. a second pressing block; 46. and (7) second seam pressing.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "above", "front side", "rear side", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed" and "mounted" are to be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; the connection may be direct or indirect through other members. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Based on the existing test equipment for detecting the fatigue degree of the wire harness pointed out in the background technology, the bending fatigue strength and the torsion fatigue strength of the wire harness are separately tested when being detected, and the detection efficiency is low; in addition, the existing measuring and setting equipment has the technical problems of large volume, inconvenience in moving and inconvenience in use. The utility model provides a pencil fatigue test equipment, through setting up the fixed subassembly of pencil between twisting test mechanism and the accredited testing organization of bending to make its both ends can be towards respectively twisting test mechanism and the accredited testing organization of bending extend and be twisted test mechanism and the accredited testing organization of bending respectively and fixed after the pencil is fixed, and then can use same root pencil to use simultaneously to twist test mechanism and the accredited testing organization of bending to detect its torsion fatigue strength and the fatigue strength of bending respectively, effectively improve detection efficiency, in addition, the utility model discloses a compact structure, small, the convenient removal is used, can remove and use in the low temperature or the ultra-low temperature environment.

As shown in fig. 1 and fig. 2, the utility model provides a pencil fatigue test equipment, pencil fatigue test equipment includes fixing device 1 and installs the fixed subassembly 2 of pencil on fixing device 1, twists reverse accredited testing organization 3 and the accredited testing organization 4 of bending.

The wire harness fixing assembly 2 is arranged to be capable of locking and fixing a passing wire harness, so that two ends of the wire harness extend towards the torsion testing mechanism 3 and the bending testing mechanism 4 respectively, the wire harness can extend to positions where the torsion testing mechanism 3 and the bending testing mechanism 4 are located, the wire harness is fixed by the torsion testing mechanism 3 and the bending testing mechanism 4 respectively, and the torsion testing mechanism 3 and the bending testing mechanism 4 are used for conducting torsion fatigue strength testing and bending fatigue strength testing on the wire harness respectively.

Twist reverse test mechanism 3 and set up to fix the one end of pencil to can drive the pencil and carry out circumferential direction, so that the pencil takes place to twist, thereby test the torsional fatigue strength of pencil. Carry out circumferential direction through driving the pencil, make the pencil take place to twist reverse, after twisting the degree that the pencil can not bear, twist reverse again, the cuticle disconnection or even fracture can take place for the pencil, through record pencil circumferential direction's number of turns, the number of times of twisting is carried out before the fracture to the record pencil promptly to can obtain the antitorque intensity of changeing of pencil.

The bending testing mechanism 4 is set to be capable of fixing the other end of the wire harness and driving the wire harness to swing left and right in a reciprocating mode, so that the wire harness is bent, and the bending fatigue strength of the wire harness is tested. The wiring harness is driven to swing so that the wiring harness is bent, the wiring harness swings left and right repeatedly ceaselessly, after the wiring harness swings for more than a certain number of times, the surface skin of the bending point of the wiring harness is broken or the wiring harness is broken, the number of times of the wiring harness is recorded, namely the number of times of the wiring harness bending is recorded, and therefore the anti-bending strength of the wiring harness can be obtained.

Through foretell structure setting, set up fixed subassembly 2 of pencil and fix the back with the pencil, make the both ends of pencil extend towards respectively twisting testing mechanism 3 and the testing mechanism 4 of bending, when extending to twist testing mechanism 3 and the position of the testing mechanism 4 of bending, twist testing mechanism 3 and the testing mechanism 4 of bending can be fixed rather than the tip of the pencil that is close to respectively to it twists reverse or bend to drive the pencil, thereby detects the pencil.

It should be noted that the utility model discloses do not make any restriction to fixing device 1's concrete structure, as long as fixing device 1 can be installed fixed subassembly 2, torsion accredited testing organization 3 and the accredited testing organization 4 of bending with the pencil, the staff in this field can be according to actual need sets for fixing device 1's concrete structure by oneself.

Preferably, as shown in fig. 1 and 2, the fixing device 1 includes a frame 11, and a first fixing plate 12 and a second fixing plate 13 mounted on the frame 11, the first fixing plate 12 is disposed perpendicular to the second fixing plate 13, the torsion testing mechanism 3 is mounted on the first fixing plate 12, the bending testing mechanism 4 is mounted on the second fixing plate 13, the wire harness fixing assembly 2 is mounted on the second fixing plate 13, and the wire harness fixing assembly 2 is disposed between the torsion testing mechanism 3 and the bending testing mechanism 4, so that two ends of the fixed wire harness can extend outward and can be fixed by the torsion testing mechanism 3 and the bending testing mechanism 4, respectively.

Through carrying out perpendicular setting with first fixed plate 12 and second fixed plate 13 among the fixing device 1, will twist reverse accredited testing organization 3 and install on first fixed plate 12, will bend accredited testing organization 4 and install on second fixed plate 13, make twist reverse accredited testing organization 3 and bend accredited testing organization 4 and arrange perpendicularly mutually, can reduce and twist accredited testing organization 3 and the occupation space of accredited testing organization 4 of bending, set up pencil fixed subassembly 2 between twisting accredited testing organization 3 and the accredited testing organization 4 of bending, make the structure of whole equipment compacter, further reduce the volume of equipment, make equipment smaller and more exquisite, so as to remove, thereby conveniently arrange in and use in different spaces and environment.

Although in the above description, the wire harness fixing assembly 2 is mounted on the second fixing plate 13, this should not limit the scope of the present invention, as long as the wire harness fixing assembly 2 is disposed between the torsion testing mechanism 3 and the bending testing mechanism 4, and can fix the wire harness; the wire harness fixing assembly 2 may be installed at other positions of the fixing device 1 by those skilled in the art. For example, the wire harness fixing assembly 2 may be mounted on the first fixing plate 12. This kind of adjust and change in a flexible way, all do not deviate from the fundamental principle and scope of the utility model, all should be injectd within the protection scope of the utility model.

It should be noted that the present invention does not limit the specific structure of the wire harness fixing assembly 2, as long as the wire harness fixing assembly 2 can fix and clamp the wire harness and can extend the two ends of the wire harness towards the torsion testing mechanism 3 and the bending testing mechanism 4 respectively; the specific structure of the wire harness fixing assembly 2 can be set by a person skilled in the art according to actual needs.

Preferably, as shown in fig. 1 and 3, the wire harness fixing assembly 2 includes a fixing bracket 21 mounted on the second fixing plate 13, and a first fixing member 22 and a second fixing member 23 mounted on the fixing bracket 21, the first fixing member 22 and the second fixing member 23 being disposed opposite to each other with a gap formed therebetween, and the wire harness being located in the gap and being held by the first fixing member 22 and the second fixing member 23.

The wire harness is arranged in the crack and is locked by the first fixing component 22 and the second fixing component 23, so that the wire harness can be clamped and fixed, the wire harness can be prevented from moving under the pulling and holding of the torsion testing mechanism 3 or the bending testing mechanism 4 when being detected, and the accuracy of a testing result is ensured. This setting mode, simple structure is convenient for assemble and use.

It should be noted that, the present invention does not limit the specific connection manner between the first fixing member 22 and the fixing frame 21 and the specific connection manner between the second fixing member 23 and the fixing frame 21, and in practical applications, a person skilled in the art can set the connection manner between the first fixing member 22 or the second fixing member 23 and the fixing frame 21 according to practical situations. For example, the first fixing member 22 may be fixed on the fixing frame 21, and the second fixing member 23 may be fixed on the fixing frame 21 by bolts, so that the position of the second fixing member 23 can be changed by adjusting the position of the bolts, and the size of the gap between the first fixing member 22 and the second fixing member 23 is adjusted, so as to adapt to different types of wire harnesses for clamping; alternatively, the second fixing member 23 is fixed to the fixing frame 21, and the first fixing member 22 is fixed to the fixing frame 21 by bolts; and so on. These are flexible adjustments and changes, all without departing from the basic principle and scope of the present invention, and should be limited within the protection scope of the present invention.

It should be noted that the present invention does not limit the specific structure of the first fixing member 22 and the second fixing member 23, as long as there is a gap between the first fixing member 22 and the second fixing member 23 and the wire harness can be fixed and clamped in the gap, and those skilled in the art can set the structure of the first fixing member 22 and the second fixing member 23 according to actual needs. For example, the first fixing member 22 and the second fixing member 23 may be provided as a cylinder; alternatively, the first fixing member 22 and the second fixing member 23 may be provided as square columns, or the like. The adjustment and change of this kind of flexibility all do not deviate from the fundamental principle and scope of the utility model, all should be limited within the protection scope of the utility model.

Although the fixing frame 21 is mounted on the second fixing plate 13 in the above description, this should not limit the scope of the present invention, and the fixing frame 21 may be mounted on other positions of the fixing device 1 by those skilled in the art. For example, the fixing frame 21 may be mounted on the first fixing plate 12. Such flexibility in adjustment and modification is not to be departed from the basic principles and scope of the present invention, and should be within the scope of the present invention.

In addition, it should be noted that the present invention does not limit the specific structure of the torsion testing mechanism 3, and in practical applications, those skilled in the art can set the specific structure of the torsion testing mechanism 3 by themselves.

Preferably, as shown in fig. 1 and 6, the torsion testing mechanism 3 includes a first driving member 31 mounted on the first fixing plate 12, a turntable member 32 in driving connection with the first driving member 31, and a first pressing block 33 mounted on the turntable member 32, the first driving member 31 can drive the turntable member 32 to rotate along the circumferential direction thereof, and a first pressing seam 34 is formed between the first pressing block 33 and the turntable member 32 so as to press and fix the wire harness.

The torsion testing mechanism 3 is provided with a first driving member 31, a turntable member 32 in driving connection with the first driving member 31 and a first pressing block 33, and the wire harness is fixedly pressed in a first pressing seam 34 between the first pressing block 33 and the turntable member 32, so that the wire harness is twisted along with the rotation of the turntable member 32, and the torsion fatigue strength of the wire harness can be detected. The structure is simple in structure, small in size, convenient to operate and convenient to control.

It should be noted that the present invention does not limit the specific structure and shape of the turntable member 32, and in practical applications, a person skilled in the art can set the structure and shape of the turntable member 32 according to actual situations. For example, the dial member 32 may be provided as a circular disk, or the dial member 32 may be provided as a cross-shaped dial, or the like. Such flexible adjustment and change, without departing from the basic principle and scope of the present invention, should be limited within the protection scope of the present invention.

Preferably, the first driving member 31 is an ultra-low temperature stepping motor. So that the equipment can be conveniently and normally used in low-temperature environment and ultralow-temperature environment, and the application range is enlarged.

It should be noted that, the present invention does not limit the specific connection manner of the first pressing block 33 and the turntable member 32, and those skilled in the art can set the connection manner of the first pressing block 33 and the turntable member 32 according to actual needs. For example, the first presser 33 may be fixed to the dial member 32 by a screw, so that the size of the first presser slit 34 is adjusted by turning the tightness of the screw, so as to fix the wire harness and fix different types of wire harnesses. This kind of adjust and change in a flexible way, all do not deviate from the fundamental principle and scope of the utility model, all should be injectd within the protection scope of the utility model.

Preferably, as shown in fig. 3, the gap between the first fixing member 22 and the second fixing member 23 is located right above the center of the rotary disk member 32, so that the distance between the gap and the first pressing gap 34 is kept consistent during the rotation of the wire harness along the circumferential direction of the rotary disk member 32, thereby preventing the wire harness fixing assembly 2 from generating a pulling force on the wire harness.

The gap between the first fixing member 22 and the second fixing member 23 is arranged right above the center of the turntable member 32, so that the wire harness can form a conical surface in the circumferential rotation process along with the turntable member 32, and the wire harness fixing assembly 2 can be prevented from generating extra tension on the wire harness in the rotation process, thereby ensuring the accuracy of the torsional fatigue strength test result.

In addition, it should be noted that the present invention does not limit the specific structure of the bending test mechanism 4, and those skilled in the art can set the structure of the bending test mechanism 4 according to actual needs.

Preferably, as shown in fig. 4, 5, 7 and 8, the bending test mechanism 4 includes a driving swing link 42, a first swing member 43, a second swing member 44, a second pressing block 45 and a second driving member 41 mounted on the second fixing plate 13; one end of the driving swing rod 42 is pivotally connected with the second fixing plate 13; the second driving member 41 is in driving connection with the first swinging member 43 and can drive the first swinging member 43 to rotate circumferentially; the first swinging member 43 is movably connected with the driving swing rod 42, so that the first swinging member 43 can drive the other end of the driving swing rod 42 to swing left and right in a reciprocating manner in the circumferential rotating process; the second swinging member 44 is movably connected with the driving swing rod 42, so that the driving swing rod 42 can drive the second swinging member 44 to swing left and right in a reciprocating manner in the process of swinging left and right; the second presser 45 is mounted on the second swinging member 44 and fixes the wire harness therebetween so that the wire harness is bent during the leftward and rightward reciprocating rocking with the second swinging member 44.

Through the arrangement mode, the driving swing rod 42, the first swinging member 43 and the second swinging member 44 are matched with each other, so that the second driving member 41 can convert the circumferential rotation of the first swinging member 43 into the left-right reciprocating swing of the second swinging member 44 in the process of driving the first swinging member 43 to rotate circumferentially, so as to drive the wire harness to perform the left-right reciprocating swing, so that the wire harness is bent, and the bending fatigue strength of the wire harness can be detected; the bending testing mechanism 4 is simple in structure and good in transmission effect.

Preferably, the second driving member 41 is an ultra-low temperature stepping motor. So that the equipment can be used in low-temperature environment and ultralow-temperature environment, and the application range is expanded.

Preferably, as shown in fig. 7 and 8, the driving swing link 42, the first swing member 43 and the second driving member 41 are all located at the rear side of the second fixed plate 13, and the second swing member 44 includes a first sub swing member 441 located at the rear side of the second fixed plate 13, a second sub swing member 442 located at the front side of the second fixed plate 13, a bearing seat 443 fixedly installed on the second fixed plate 13, and a connecting member 444 rotatably disposed in the bearing seat 443, wherein the first sub swing member 441 is movably connected with the driving swing link 42, so that the driving swing link 42 can drive the first sub swing member 441 to swing to and fro from side to side during the swing to and fro from side to side; both ends of the connecting member 444 are respectively and fixedly connected with the first sub-swinging member 441 and the second sub-swinging member 442, so that the first sub-swinging member 441 can drive the second sub-swinging member 442 to swing left and right in a left and right reciprocating swinging process through the connecting member 444; the second presser 45 is attached to the second sub-swing member 442 with a second pressing slit 46 formed therebetween to hold and fix the wire harness, and to bend the wire harness in a process of swinging back and forth to the left and right along with the second sub-swing member 442.

In the above description, by disposing the driving swing lever 42, the first swing member 43 and the second driving member 41 at the rear side of the second fixed plate 13, disposing the second swing member 44 as the first sub swing member 441, the second sub swing member 442, the bearing holder 443 and the connecting member 444, disposing the first sub swing member 441 at the rear side of the second fixed plate 13, and disposing the second sub swing member 442 at the front side of the second fixed plate 13, the disposition can make better use of space, and the respective members can be arranged reasonably to save space; and install second briquetting 45 on second sub-swing member 442 to form second pressure seam 46 between the two and fix the pencil, can effectually shorten the distance between second pressure seam 46 and the crack of pencil fixed component 2, and then effectively reduce the volume of equipment.

It should be noted that, the present invention does not limit the specific connection manner between the second pressing block 45 and the second sub-oscillating member 442, and those skilled in the art can set the connection manner between the second pressing block 45 and the second sub-oscillating member 442 according to actual needs. For example, the second pressing piece 45 may be fixed to the second pressing piece 45 by a screw, so that the size of the second pressing slit 46 is adjusted by rotating the tightness of the screw, so as to fix the wire harness or fix different types of wire harnesses. The flexible adjustment and change do not deviate from the basic principle and scope of the utility model, and the adjustment and change are limited within the protection scope of the utility model.

It should be noted that, the present invention does not limit the specific connection manner between the first swing member 43 and the driving swing link 42 and the specific connection manner between the first sub-swing member 441 and the driving swing link 42, and those skilled in the art can set the connection manner between the first swing member 43 and the first sub-swing member 441 and the driving swing link 42 according to actual requirements.

Preferably, as shown in fig. 8, a moving through groove 421 extending along the length of the driving swing rod 42 is provided, a first rotating column 431 is provided at one end of the first swinging member 43, the first rotating column 431 is provided in the moving through groove 421, and the first rotating column 431 can reciprocate along the length direction of the moving through groove 421 in the circumferential rotation process of the first swinging member 43, so as to drive the other end of the driving swing rod 42 to reciprocate left and right; one end of the first sub-swinging member 441 is provided with a second rotating column 4411, the second rotating column 4411 is arranged in the moving through groove 421, and the second rotating column 4411 can reciprocate along the length direction of the moving through groove 421 in the process of driving the swing rod 42 to reciprocate left and right, so that the first sub-swinging member 441 can reciprocate left and right with the center line of the bearing seat 443 as the axis.

In the above description, by providing the moving through groove 421 on the driving swing link 42 and disposing the first swing post 431 and the second swing post 4411 in the moving through groove 421, the circumferential rotation of the first swinging member 43 can drive the driving swing link 42 to swing back and forth left and right by the simple structural arrangement, so as to drive the first sub swinging member 441 to swing back and forth left and right, and the swinging amplitude of the driving swing link 42 can be controlled, so as to control the swinging amplitude of the wire harness during the bending test; this setting mode, simple structure, the transmission is effectual and be convenient for control.

Preferably, as shown in fig. 5, the axis of the swing lever 42, the axis of the first swing member 43, and the axis of the second swing member 44, which are driven to reciprocate left and right, are located on the same plane.

The axis of the swing rod 42, the axis of the first swing member 43 and the axis of the second swing member 44, which are driven to swing back and forth in the left-right direction, are arranged in the same plane, so that the swing amplitude of the swing rod 42 can be reduced, the size of the equipment is further reduced, and the equipment is more convenient to move and use.

Preferably, the gap between the first fixing member 22 and the second fixing member 23 is located right in front of the axis of the second swinging member 44 swinging back and forth in the left-right direction, and is located at the same height as the axis of the second swinging member 44 swinging back and forth in the left-right direction, so that the distance between the gap and the second pressing gap 46 can be kept consistent during the process of the wire harness swinging back and forth with the second swinging member 44, and the wire harness fixing assembly 2 can be prevented from generating tension on the wire harness.

The crack between the first fixing member 22 and the second fixing member 23 is arranged right in front of the axis of the second swinging member 44 which swings left and right in a reciprocating manner, and is arranged at the same height as the axis of the second swinging member 44 which swings left and right in a reciprocating manner, so that the wire harness can do circular motion in the process of swinging left and right in a reciprocating manner along with the second swinging member 44, the wire harness fixing assembly 2 can be prevented from generating extra tension on the wire harness in the swinging process, and the accuracy of the bending fatigue strength detection result of the wire harness can be effectively ensured.

So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims (10)

1. A wiring harness fatigue testing device is characterized by comprising a fixing device, and a wiring harness fixing assembly, a torsion testing mechanism and a bending testing mechanism which are arranged on the fixing device;

the fixed subassembly of pencil sets up to locking fixedly so that the both ends of pencil that can pass are faced respectively twist reverse accredited testing organization with the accredited testing organization of bending extends, twist reverse accredited testing organization and set up to fix the one end of pencil and can drive the pencil and carry out circumferential direction so that the pencil twists reverse the fatigue strength of twisting that twists with the test pencil, the accredited testing organization of bending sets up to fixing the other end of pencil and can drive the pencil and control reciprocal the rocking so that the pencil takes place to bend with the fatigue strength of bending of test pencil.

2. The wire harness fatigue testing apparatus according to claim 1, wherein the fixing device includes a frame, and a first fixing plate and a second fixing plate mounted on the frame, the first fixing plate is disposed perpendicular to the second fixing plate, the torsion testing mechanism is mounted on the first fixing plate, the bending testing mechanism is mounted on the second fixing plate, and the wire harness fixing assembly is mounted on the first fixing plate or the second fixing plate and disposed between the torsion testing mechanism and the bending testing mechanism so that both ends of the fixed wire harness can extend outward and are fixed by the torsion testing mechanism and the bending testing mechanism, respectively.

3. The wire harness fatigue testing device according to claim 2, wherein the wire harness fixing assembly includes a fixing bracket mounted on the first fixing plate or the second fixing plate, and a first fixing member and a second fixing member mounted on the fixing bracket, the first fixing member and the second fixing member being disposed opposite to each other with a gap formed therebetween, and the wire harness being located in the gap and being held by the first fixing member and the second fixing member.

4. The wire harness fatigue testing apparatus according to claim 3, wherein the torsion testing mechanism includes a first driving member mounted on the first fixing plate, a turntable member drivingly connected to the first driving member, and a first pressing block mounted on the turntable member, the first driving member being capable of driving the turntable member to rotate in a circumferential direction thereof, a first pressing slit being formed between the first pressing block and the turntable member so as to press and fix the wire harness.

5. The wire harness fatigue testing apparatus of claim 4, wherein the slit is located directly above a center of the turntable member so that the distance between the slit and the first press slit is kept consistent during rotation of the wire harness with the turntable member in a circumferential direction thereof to avoid a tensile force of the wire harness by the wire harness fixing member.

6. The wire harness fatigue testing apparatus according to claim 3, wherein the bending testing mechanism includes a drive swing link, a first swing member, a second press block, and a second drive member mounted on the second fixing plate;

one end of the driving swing rod is pivotally connected with the second fixing plate;

the second driving member is in driving connection with the first swinging member and can drive the first swinging member to rotate circumferentially;

the first swinging component is movably connected with the driving swinging rod so that the first swinging component can drive the other end of the driving swinging rod to swing left and right in a reciprocating manner in the circumferential rotating process;

the second swinging component is movably connected with the driving swing rod so that the driving swing rod can drive the second swinging component to swing left and right in a reciprocating swing process;

the second pressing block is installed on the second swinging component and fixes the wire harness between the second swinging component and the second pressing block so that the wire harness is bent in the process of swinging left and right along with the second swinging component.

7. The wire harness fatigue testing apparatus of claim 6, wherein the drive swing link, the first swing member, and the second drive member are all located at a rear side of the second fixing plate,

the second swing member comprises a first sub swing member positioned at the rear side of the second fixed plate, a second sub swing member positioned at the front side of the second fixed plate, a bearing seat fixedly installed on the second fixed plate, and a connecting member rotatably arranged in the bearing seat,

the first sub-swinging member is movably connected with the driving swing rod so that the driving swing rod can drive the first sub-swinging member to swing left and right in a reciprocating manner in the process of swinging left and right,

two ends of the connecting member are respectively and fixedly connected with the first sub-swinging member and the second sub-swinging member, so that the first sub-swinging member can drive the second sub-swinging member to swing left and right in a reciprocating swinging process through the connecting member;

the second pressing block is installed on the second sub-swinging member, a second pressing seam is formed between the second pressing block and the second sub-swinging member so as to press, hold and fix the wire harness, and the wire harness can be bent in the process of swinging left and right along with the second sub-swinging member.

8. The wire harness fatigue testing apparatus of claim 7, wherein the drive pendulum is provided with a moving channel extending along a length thereof,

a first rotating column is arranged at one end of the first swinging member, is arranged in the moving through groove and can reciprocate along the length direction of the moving through groove in the circumferential rotating process of the first swinging member so as to drive the other end of the driving swinging rod to reciprocate left and right;

and a second rotating column is arranged at one end of the first sub-swinging member, is arranged in the moving through groove and can reciprocate along the length direction of the moving through groove in the process of reciprocating the driving swing rod left and right, so that the first sub-swinging member can reciprocate left and right with the central line of the bearing seat as an axis.

9. The wire harness fatigue testing apparatus of claim 6, wherein an axis of the swing link being driven to reciprocate left and right, an axis of the first swing member being rotated circumferentially, and an axis of the second swing member being reciprocated left and right are located in the same plane.

10. The apparatus for testing fatigue of a wire harness according to claim 7, wherein the slit is located directly in front of and at the same height as an axis of the second swing member for rocking in a side-to-side direction so that the wire harness keeps a uniform distance between the slit and the second pinch seam during rocking in a side-to-side direction with the second swing member to prevent the wire harness fixing member from pulling the wire harness.

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