CN113945474A - Eccentric automobile wire harness tension resistance detection system and working method - Google Patents
Eccentric automobile wire harness tension resistance detection system and working method Download PDFInfo
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- CN113945474A CN113945474A CN202111133044.8A CN202111133044A CN113945474A CN 113945474 A CN113945474 A CN 113945474A CN 202111133044 A CN202111133044 A CN 202111133044A CN 113945474 A CN113945474 A CN 113945474A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/38—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by electromagnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
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- G01N2203/028—One dimensional, e.g. filaments, wires, ropes or cables
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Abstract
The invention discloses an eccentric automobile wire harness tension resistance detection system, which comprises a rotary wire harness detection unit and a plurality of automobile wire harnesses waiting for a tension resistance test, wherein the plurality of automobile wire harnesses waiting for the tension resistance test are distributed in a circumferential array and are arranged on the rotary wire harness detection unit; the flexible wire harness structure is simple in structure, the position of any flexible wire harness is periodically changed at any time, and the tensile stress on any flexible wire harness is continuously and periodically increased and decreased, so that the tensile stress which is periodically changed is applied to each flexible wire harness; and the change rule of the tensile stress borne by the flexible wire harnesses is highly consistent, so that the consistency of sampling detection is ensured.
Description
Technical Field
The invention belongs to the field of wire harness detection.
Background
The static tension test is an important step of the tensile test of the automobile wire harness, and due to the fact that the actual working condition of the automobile is complex, vibration of an engine, road condition jolt and the like can cause part of the wire harness in the automobile to generate variable tensile stress; therefore, a simple static pull test is limited; the variable tensile stress endurance test can be more reliably performed to achieve higher quality standards, and therefore it is necessary to design a harness testing apparatus that is more severe in tensile stress at the time of change.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides an eccentric automobile wire harness tension resistance detection system with more severe test conditions and a working method.
The technical scheme is as follows: in order to achieve the purpose, the eccentric automobile wire harness tensile strength detection system comprises a rotary wire harness detection unit and a plurality of automobile wire harnesses waiting for the tensile test, wherein the plurality of automobile wire harnesses waiting for the tensile test are distributed in a circumferential array and are installed on the rotary wire harness detection unit;
the rotary wire harness detection unit comprises an upper rotary ring and a lower rotary ring which are coaxial; a plurality of upper harness end clamps are fixedly arranged on the lower side of the upper slewing ring in a circumferential array manner, and a plurality of lower harness end clamps are fixedly arranged on the upper side of the lower slewing ring in a circumferential array manner; the upper wire harness end holders and the lower wire harness end holders are in one-to-one correspondence from top to bottom.
Furthermore, two vertical lifters are symmetrically arranged on two sides of the lower rotary ring, and both the two lifters are fixedly connected to the lower rotary ring through lifter supports; the top ends of the lifting rods of the two lifters are fixedly connected with the upper slewing ring through connecting arms; therefore, the upper slewing ring can be lifted up and down, and the upper slewing ring synchronously rotates along with the lower slewing ring.
Further, the device also comprises a base, wherein a vertical motor is fixedly mounted on the base, an output shaft of the motor is coaxial with the lower slewing ring, and the output shaft is fixedly connected with the lower slewing ring through a plurality of connecting rods, so that the lower slewing ring synchronously revolves along with the output shaft.
Furthermore, the number of the upper harness end gripper and the lower harness end gripper is more than or equal to three.
Furthermore, a first outer ring, a second outer ring, a third outer ring and a fourth outer ring are arranged between the upper slewing ring and the lower slewing ring from top to bottom at equal intervals; a floating inner ring is arranged in the enclosing range of the first outer ring, the second outer ring, the third outer ring and the fourth outer ring; the four floating inner ring rings are coaxial with each other, and the inner ring of each floating inner ring is a bearing hole; the bearing holes of the inner rings of the four floating inner ring rings are in running fit with the floating shaft through bearings;
the end of a horizontal telescopic rod of the telescopic device is fixedly connected with the upper end of the floating shaft through a connecting bracket; the extension of the horizontal telescopic rod can enable the floating shaft to horizontally displace, so that the four floating inner ring rings are driven to horizontally float, and the expansion piece is fixed on the base through an expansion piece support;
spiral spring pieces which are constant-speed spirals in a top view are arranged in the enclosing range of the first outer ring, the second outer ring, the third outer ring and the fourth outer ring, and one ends, far away from the center of the spirals, of the four spiral spring pieces are fixed on the inner walls of the first outer ring, the second outer ring, the third outer ring and the fourth outer ring respectively; one ends of the four spiral spring pieces close to the centers of the spirals are respectively fixed on the outer walls of the four floating inner rings;
when the first outer ring, the second outer ring, the third outer ring, the fourth outer ring and the four floating inner rings are in a coaxial state, the four spiral spring pieces are in a free state;
the terminals at the two ends of each flexible wiring harness are respectively a second wiring harness terminal; the A clamping part of each upper wire harness end clamping device is used for fixedly clamping the first wire harness terminal of each flexible wire harness, and the B clamping part of each lower wire harness end clamping device is used for fixedly clamping the second wire harness terminal of each flexible wire harness;
a plurality of fixed pulleys are distributed on the periphery between the upper slewing ring and the lower slewing ring in a circumferential array manner, and the middle part of each flexible wire harness in a tightened state spans one fixed pulley from one side far away from the axis of the upper slewing ring/the lower slewing ring;
furthermore, each fixed pulley is rotatably arranged on a fixed pulley support; and one end of each fixed pulley support close to the axis of the upper slewing ring/the lower slewing ring is fixedly connected with a transverse connecting beam, and each transverse beam is respectively and fixedly connected with the outer rings of the first outer ring, the second outer ring, the third outer ring and the fourth outer ring through a first connecting inclined rod, a second connecting inclined rod, a third connecting inclined rod and a fourth connecting inclined rod.
Furthermore, the spiral spring piece is made of 50CrVA spring steel.
Further, the working method of the eccentric automobile wire harness tension resistance detection system comprises the following steps:
in an initial state, the first outer ring, the second outer ring, the third outer ring, the fourth outer ring and the four floating inner rings are in a coaxial state, and at the moment, the four spiral spring pieces are in a free state;
randomly selecting a plurality of flexible wire harnesses waiting for a tension test from a production line, enabling the middle parts of the plurality of flexible wire harnesses to stride over one fixed pulley from one side far away from the axis of the upper slewing ring/the lower slewing ring, enabling the clamping part A of each upper wire harness end clamping device to fixedly clamp the first wire harness terminal of each flexible wire harness, and enabling the clamping part B of each lower wire harness end clamping device to fixedly clamp the second wire harness terminal of each flexible wire harness; at the moment, all the flexible wiring harnesses are in a loose state;
then controlling the lifters to enable the upper slewing ring to ascend relative to the lower slewing ring, so that all flexible wire harnesses waiting for the tensile test are gradually changed from a loose state to a tight state, and locking the two lifters when all the flexible wire harnesses waiting for the tensile test are just tight, so that the height difference between the upper slewing ring and the lower slewing ring is kept unchanged; under the common constraint of a plurality of flexible wire harnesses which are distributed in a circumferential array and are tightened, the first outer ring, the second outer ring, the third outer ring and the fourth outer ring are always in a coaxial state with the upper slewing ring and the lower slewing ring;
at the moment, the expansion device is controlled to extend out the horizontal expansion rod, so that the floating shaft is horizontally displaced leftwards, and the four floating inner rings are driven to horizontally float leftwards; the first outer ring circle, the second outer ring circle, the third outer ring circle and the fourth outer ring circle are always in a coaxial state with the upper slewing ring and the lower slewing ring under the common constraint of a plurality of flexible wire harnesses which are distributed in a circumferential array and tightened; therefore, the first outer ring, the second outer ring, the third outer ring and the fourth outer ring do not horizontally float along with the four floating inner rings, so that the four floating inner rings, the first outer ring, the second outer ring, the third outer ring and the fourth outer ring are respectively changed into an eccentric state from a coaxial state, at the moment, the four spiral spring pieces can correspondingly generate elastic deformation, and according to stress analysis, the four spiral spring pieces generate a left resultant force F to the first outer ring, the second outer ring, the third outer ring and the fourth outer ring due to the elastic deformation; meanwhile, a resultant force F formed by the tensile stress of the plurality of flexible wire harnesses which are distributed in a circumferential array and tightened is finally transmitted to the first outer ring, the second outer ring, the third outer ring and the fourth outer ring, and according to the force balance principle, the magnitude and the direction of the resultant force F are equal and opposite; according to the stress analysis, the more the flexible wire harness closer to the right side among the plurality of flexible wire harnesses which are distributed in the circumferential array and tightened is subjected to larger tensile stress, the more the flexible wire harness closer to the left side is subjected to smaller tensile stress;
an output shaft of the motor drives the upper rotating ring and the lower rotating ring to rotate along the axis; the rotating torque of the upper rotating ring and the lower rotating ring is transmitted to each fixed pulley through a plurality of flexible wire harnesses which are distributed in a circumferential array and tightened, and then the first outer ring, the second outer ring, the third outer ring and the fourth outer ring rotate along the axis of the first outer ring, the second outer ring, the third outer ring and the fourth outer ring; meanwhile, under the transmission of the four spiral spring pieces, the four floating inner ring rings also rotate along the self axis in an adaptive manner;
because the four floating inner ring rings and the first outer ring, the second outer ring, the third outer ring and the fourth outer ring are in an eccentric state, the four floating inner ring rings and the first outer ring, the second outer ring, the third outer ring and the fourth outer ring rotate at equal rotating speed along respective axes; in the process that the four floating inner ring rings and the first outer ring, the second outer ring, the third outer ring and the fourth outer ring rotate at equal rotation speeds along respective axes, the relative positions of the four floating inner ring rings and the first outer ring, the second outer ring, the third outer ring and the fourth outer ring are not changed all the time, so that the magnitude and the direction of resultant force F and resultant force F borne by the first outer ring, the second outer ring, the third outer ring and the fourth outer ring are not changed all the time, and the direction of any flexible wire harness is changed periodically at any moment, so that the magnitude of tensile stress borne by any flexible wire harness is changed periodically and further changed continuously, and the tensile stress borne by each flexible wire harness is changed periodically; the change rule of the tensile stress on the flexible wire harnesses is highly consistent, so that the consistency of sampling detection is ensured;
if the change frequency of the tensile stress needs to be enhanced, only the output rotating speed of the motor needs to be controlled, and if the highest tensile stress in the variable tensile stress needs to be enhanced, only the extending distance of the horizontal telescopic rod needs to be controlled; and after the preset time is continued, taking down the flexible wiring harnesses to carry out a power-on test, and if all the flexible wiring harnesses can be powered on, indicating that the detection result is in accordance with the requirement.
Has the advantages that: the flexible wire harness structure is simple in structure, the position of any flexible wire harness is periodically changed at any time, and the tensile stress on any flexible wire harness is continuously and periodically increased and decreased, so that the tensile stress which is periodically changed is applied to each flexible wire harness; and the change rule of the tensile stress borne by the flexible wire harnesses is highly consistent, so that the consistency of sampling detection is ensured.
Drawings
FIG. 1 is a schematic view of the overall structure of the device;
FIG. 2 is an enlarged partial schematic view of FIG. 1;
FIG. 3 is a front view of the apparatus
FIG. 4 is a schematic structural view of the apparatus with the rotary harness detection unit concealed;
FIG. 5 is a schematic structural view of a rotary wire harness detection unit;
FIG. 6 is a top view of FIG. 5;
fig. 7 is a schematic view of a flexible wiring harness.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The eccentric automobile harness tensile strength detection system shown in fig. 1 to 7 comprises a rotary harness detection unit 24 and a plurality of automobile harnesses 16 waiting for a tensile test, wherein the plurality of automobile harnesses 16 waiting for the tensile test are distributed in a circumferential array and are installed on the rotary harness detection unit 24;
the rotary harness detection unit 24 includes an upper rotary ring 2 and a lower rotary ring 6 which are coaxial; a plurality of upper harness end clamps 18 are fixedly arranged on the lower side of the upper slewing ring 2 in a circumferential array, and a plurality of lower harness end clamps 10 are fixedly arranged on the upper side of the lower slewing ring 6 in a circumferential array; the upper harness end holders 18 correspond to the lower harness end holders 10 one-to-one from top to bottom.
Two vertical lifters 11 are symmetrically arranged on two sides of the lower revolving ring 6, and the two lifters 11 are both fixedly connected to the lower revolving ring 6 through lifter supports 9; the top ends of the lifting rods 12 of the two lifters 11 are fixedly connected with the upper slewing ring 2 through connecting arms 17; thereby the upper slewing ring 2 can be lifted up and down and the upper slewing ring 2 can synchronously rotate along with the lower slewing ring 6.
Still include base 19, fixed mounting has vertical motor 25 on the base, and the output shaft 7 of motor 25 is coaxial with lower slewing ring 6, and output shaft 7 passes through a plurality of connecting rods 8 fixed connection lower slewing ring 6 to make lower slewing ring 6 along with output shaft 7 synchronous revolution.
The number of upper and lower harness end grippers 18, 10 is equal to or greater than three.
A first outer ring 1.1, a second outer ring 1.2, a third outer ring 1.3 and a fourth outer ring 1.4 are arranged between the upper slewing ring 2 and the lower slewing ring 6 at equal intervals from top to bottom; a floating inner ring 32 is arranged in the enclosing range of the first outer ring 1.1, the second outer ring 1.2, the third outer ring 1.3 and the fourth outer ring 1.4; the four floating inner ring rings 32 are coaxial with each other, and the inner ring of each floating inner ring 32 is a bearing hole 30; the bearing device also comprises a vertical floating shaft 01, and bearing holes 30 of inner rings of four floating inner ring rings 32 are in running fit with the floating shaft 01 through bearings 3;
the device also comprises a horizontal expansion piece 21, wherein the tail end of a horizontal expansion rod 22 of the expansion piece 21 is fixedly connected with the upper end of the floating shaft 01 through a connecting bracket 23; the extension of the horizontal telescopic rod 22 can enable the floating shaft 01 to horizontally displace, so as to drive the four floating inner ring rings 32 to horizontally float, and the expansion piece 21 is fixed on the base 19 through the expansion piece bracket 20;
when the first outer ring 1.1, the second outer ring 1.2, the third outer ring 1.3, the fourth outer ring 1.4 and the four floating inner rings 32 are in a coaxial state, all the four spiral spring pieces 31 are in a free state;
the terminals at two ends of each flexible wiring harness 16 are a first wiring harness terminal 16.1 and a second wiring harness terminal 16.2 respectively; the a clamping portions 26 of the respective upper harness end clamps 18 respectively fixedly clamp the first harness ends 16.1 of the respective flexible harnesses 16, and the B clamping portions 27 of the respective lower harness end clamps 10 respectively fixedly clamp the second harness ends 16.2 of the respective flexible harnesses 16;
a plurality of fixed pulleys 14 are distributed on the periphery between the upper slewing ring 2 and the lower slewing ring 6 in a circumferential array manner, and the middle part of each flexible wire harness 16 in a tightened state spans one fixed pulley 14 from one side far away from the axis of the upper slewing ring 2/the lower slewing ring 6;
each fixed pulley 14 is rotatably arranged on the fixed pulley support 13; one end of each fixed pulley support 13 close to the axis of the upper slewing ring 2/the lower slewing ring 6 is fixedly connected with a transverse connecting beam 15, and each transverse beam 15 is respectively and fixedly connected with the outer rings of a first outer ring 1.1, a second outer ring 1.2, a third outer ring 1.3 and a fourth outer ring 1.4 through a first connecting inclined rod 5.1, a second connecting inclined rod 5.2, a third connecting inclined rod 5.3 and a fourth connecting inclined rod 5.4.
The material of the spiral spring piece 31 is 50CrVA spring steel.
The overall working steps of the scheme are as follows:
step one, enabling a first outer ring (1.1), a second outer ring (1.2), a third outer ring (1.3), a fourth outer ring (1.4) and four floating inner rings (32) to be in a coaxial state;
controlling the upper slewing ring (2) to ascend, so that all the flexible wire harnesses (16) waiting for the tension test are gradually changed from a loose state to a tight state;
step three, the horizontal telescopic rod (22) extends out to enable the four floating inner ring rings (32) to be respectively converted into an eccentric state from a coaxial state with the first outer ring (1.1), the second outer ring (1.2), the third outer ring (1.3) and the fourth outer ring (1.4);
and step five, an output shaft (7) of the motor (25) drives the upper slewing ring (2) and the lower slewing ring (6) to rotate along the axis.
The detailed working principle and the working method of the scheme are as follows:
in an initial state, the first outer ring 1.1, the second outer ring 1.2, the third outer ring 1.3, the fourth outer ring 1.4 and the four floating inner rings 32 are in a coaxial state, and at this time, the four spiral spring pieces 31 are in a free state;
randomly selecting a plurality of flexible wire harnesses 16 waiting for a tensile test from a production line, enabling the middle parts of the plurality of flexible wire harnesses 16 to stride over a fixed pulley 14 from one side far away from the axis of the upper slewing ring 2/the lower slewing ring 6, enabling the A clamping parts 26 of the upper wire harness end part clamping devices 18 to fixedly clamp the first wire harness terminals 16.1 of the flexible wire harnesses 16 respectively, and enabling the B clamping parts 27 of the lower wire harness end part clamping devices 10 to fixedly clamp the second wire harness terminals 16.2 of the flexible wire harnesses 16 respectively; at this time, each flexible harness 16 is in a relaxed state;
then controlling the lifters 11 to enable the upper slewing ring 2 to ascend relative to the lower slewing ring 6, so that all the flexible wire harnesses 16 waiting for the tension test are gradually changed from a loose state to a tight state, and locking the two lifters 11 when all the flexible wire harnesses 16 waiting for the tension test are just tight, so that the height difference between the upper slewing ring 2 and the lower slewing ring 6 is kept unchanged; under the common constraint of a plurality of flexible wire harnesses 16 which are distributed in a circumferential array and are tightened, the first outer ring 1.1, the second outer ring 1.2, the third outer ring 1.3 and the fourth outer ring 1.4 are always in a coaxial state with the upper slewing ring 2 and the lower slewing ring 6;
at this time, the telescopic device 21 is controlled to extend the horizontal telescopic rod 22, so that the floating shaft 01 is horizontally displaced leftwards, and the four floating inner rings 32 are driven to horizontally float leftwards; the first outer ring circle 1.1, the second outer ring circle 1.2, the third outer ring circle 1.3 and the fourth outer ring circle 1.4 are always in a coaxial state with the upper slewing ring 2 and the lower slewing ring 6 under the common constraint of a plurality of flexible wire harnesses 16 which are distributed in a circumferential array and are tightened; therefore, the first outer ring 1.1, the second outer ring 1.2, the third outer ring 1.3 and the fourth outer ring 1.4 do not horizontally float along with the four floating inner rings 32, so that the four floating inner rings 32, the first outer ring 1.1, the second outer ring 1.2, the third outer ring 1.3 and the fourth outer ring 1.4 respectively change from a coaxial state to an eccentric state, and then the four spiral spring pieces 31 correspondingly generate elastic deformation, and according to stress analysis, the four spiral spring pieces 31 generate a left resultant force F to the first outer ring 1.1, the second outer ring 1.2, the third outer ring 1.3 and the fourth outer ring 1.4 due to the elastic deformation; meanwhile, a resultant force F formed by the tensile stress of the plurality of flexible wire harnesses 16 which are distributed in a circumferential array and tightened is finally transmitted to the first outer ring 1.1, the second outer ring 1.2, the third outer ring 1.3 and the fourth outer ring 1.4, and according to the force balance principle, the magnitude of the resultant force F and the direction of the resultant force F are equal and opposite; according to the stress analysis again, the more the flexible harnesses 16 closer to the right side among the plurality of flexible harnesses 16 which are distributed in the circumferential array and tightened are subjected to larger tensile stress, the more the flexible harnesses 16 closer to the left side are subjected to smaller tensile stress;
an output shaft 7 of the motor 25 drives the upper slewing ring 2 and the lower slewing ring 6 to rotate along the axis; the rotating torque of the upper rotating ring 2 and the lower rotating ring 6 is transmitted to each fixed pulley 14 through a plurality of flexible wire harnesses 16 which are distributed in a circumferential array and tightened, and then the first outer ring 1.1, the second outer ring 1.2, the third outer ring 1.3 and the fourth outer ring 1.4 rotate along the axis of the first outer ring 1.1, the second outer ring 1.2, the third outer ring 1.3 and the fourth outer ring 1.4; meanwhile, under the transmission of the four spiral spring pieces 31, the four floating inner rings 32 also rotate along the self axis in an adaptive manner;
because the four floating inner ring loops 32 are in an eccentric state with the first outer ring loop 1.1, the second outer ring loop 1.2, the third outer ring loop 1.3 and the fourth outer ring loop 1.4, the four floating inner ring loops 32, the first outer ring loop 1.1, the second outer ring loop 1.2, the third outer ring loop 1.3 and the fourth outer ring loop 1.4 rotate around the respective axes at the same rotation speed; in the process that the four floating inner ring loops 32 and the first outer ring loop 1.1, the second outer ring loop 1.2, the third outer ring loop 1.3 and the fourth outer ring loop 1.4 rotate around respective axes at equal rotation speed, the relative positions of the four floating inner ring loops 32 and the first outer ring loop 1.1, the second outer ring loop 1.2, the third outer ring loop 1.3 and the fourth outer ring loop 1.4 are not changed all the time, so that the magnitude and direction of the resultant force F and the resultant force F applied to the first outer ring loop 1.1, the second outer ring loop 1.2, the third outer ring loop 1.3 and the fourth outer ring loop 1.4 are not changed all the time, the orientation of any one flexible wire harness 16 is changed periodically at any moment, and the magnitude of the tensile stress applied to any one flexible wire harness 16 is changed periodically, so that the tensile stress applied to each flexible wire harness 16 is changed periodically; moreover, the change rule of the tensile stress on the flexible wiring harnesses 16 is highly consistent, so that the consistency of sampling detection is ensured;
if the variation frequency of the tensile stress needs to be enhanced, only the output rotating speed of the motor 25 needs to be controlled, and if the highest tensile stress in the variation tensile stress needs to be enhanced, only the extending distance of the horizontal telescopic rod 22 needs to be controlled; after the preset time, the flexible wiring harnesses 16 are taken down to carry out the power-on test, and if all the flexible wiring harnesses 16 can be powered on, the detection result is satisfactory.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (8)
1. Resistant tension detecting system of eccentric formula car pencil, its characterized in that: the device comprises a rotary wire harness detection unit (24) and a plurality of automobile wire harnesses (16) waiting for a tensile test, wherein the plurality of automobile wire harnesses (16) waiting for the tensile test are distributed in a circumferential array and are arranged on the rotary wire harness detection unit (24);
the rotary wire harness detection unit (24) comprises an upper rotary ring (2) and a lower rotary ring (6) which are coaxial; a plurality of upper harness end clamps (18) are fixedly arranged on the lower side of the upper slewing ring (2) in a circumferential array manner, and a plurality of lower harness end clamps (10) are fixedly arranged on the upper side of the lower slewing ring (6) in a circumferential array manner; the upper harness end holders (18) and the lower harness end holders (10) are in one-to-one correspondence from top to bottom.
2. The eccentric automobile wire harness tension resistance detection system according to claim 1, wherein: two vertical lifters (11) are symmetrically arranged on two sides of the lower rotary ring (6), and the two lifters (11) are fixedly connected to the lower rotary ring (6) through lifter supports (9); the top ends of the lifting rods (12) of the two lifters (11) are fixedly connected with the upper slewing ring (2) through connecting arms (17); therefore, the upper slewing ring (2) can be lifted up and down, and the upper slewing ring (2) can synchronously slew along with the lower slewing ring (6).
3. The eccentric automobile wire harness tension resistance detection system according to claim 2, wherein: still include base (19), fixed mounting has vertical motor (25) on the base, output shaft (7) of motor (25) with lower slewing ring (6) are coaxial, output shaft (7) through a plurality of connecting rods (8) fixed connection lower slewing ring (6), thereby make lower slewing ring (6) follow output shaft (7) synchronous revolution.
4. The eccentric automobile wire harness tension resistance detection system according to claim 3, wherein: the number of the upper harness end gripper (18) and the lower harness end gripper (10) is more than or equal to three.
5. The eccentric automobile wire harness tension resistance detection system according to claim 4, wherein: a first outer ring (1.1), a second outer ring (1.2), a third outer ring (1.3) and a fourth outer ring (1.4) are arranged between the upper slewing ring (2) and the lower slewing ring (6) from top to bottom at equal intervals; a floating inner ring (32) is arranged in the enclosing range of the first outer ring (1.1), the second outer ring (1.2), the third outer ring (1.3) and the fourth outer ring (1.4); the four floating inner ring rings (32) are coaxial, and the inner ring of each floating inner ring (32) is a bearing hole (30); the bearing device is characterized by further comprising a vertical floating shaft (01), wherein bearing holes (30) of inner rings of the four floating inner ring rings (32) are in running fit with the floating shaft (01) through bearings (3);
the floating shaft is characterized by further comprising a horizontal expansion piece (21), wherein the tail end of a horizontal expansion rod (22) of the expansion piece (21) is fixedly connected with the upper end of the floating shaft (01) through a connecting support (23); the extension of the horizontal telescopic rod (22) can enable the floating shaft (01) to horizontally displace, so that the four floating inner rings (32) are driven to horizontally float, and the expansion piece (21) is fixed on the base (19) through an expansion piece bracket (20);
spiral spring pieces (31) which are constant-speed spirals in a top view are arranged in the enclosing range of the first outer ring (1.1), the second outer ring (1.2), the third outer ring (1.3) and the fourth outer ring (1.4), and one ends, far away from the center of the spirals, of the four spiral spring pieces (31) are respectively fixed on the inner walls of the first outer ring (1.1), the second outer ring (1.2), the third outer ring (1.3) and the fourth outer ring (1.4); one ends of the four spiral spring pieces (31) close to the center of the spiral are respectively fixed on the outer walls of the four floating inner rings (32);
when the first outer ring (1.1), the second outer ring (1.2), the third outer ring (1.3) and the fourth outer ring (1.4) are coaxial with the four floating inner rings (32), all the four spiral spring pieces (31) are in a free state;
the terminals at two ends of each flexible wiring harness (16) are a first wiring harness terminal (16.1) and a second wiring harness terminal (16.2) respectively; a clamp parts (26) of the upper harness end clamps (18) respectively and fixedly clamp first harness terminals (16.1) of the flexible harnesses (16), and B clamp parts (27) of the lower harness end clamps (10) respectively and fixedly clamp second harness terminals (16.2) of the flexible harnesses (16);
a plurality of fixed pulleys (14) are distributed on the periphery between the upper slewing ring (2) and the lower slewing ring (6) in a circumferential array manner, and the middle part of each flexible wiring harness (16) in a tightened state spans one fixed pulley (14) from one side far away from the axis of the upper slewing ring (2)/the lower slewing ring (6).
6. The eccentric automobile wire harness tension resistance detection system according to claim 5, wherein: each fixed pulley (14) is rotatably arranged on a fixed pulley support (13); one end, close to the axis of the upper slewing ring (2)/the lower slewing ring (6), of each fixed pulley support (13) is fixedly connected with a transverse connecting beam (15), and each transverse beam (15) is fixedly connected with outer rings of a first outer ring (1.1), a second outer ring (1.2), a third outer ring (1.3) and a fourth outer ring (1.4) respectively through a first connecting inclined rod (5.1), a second connecting inclined rod (5.2), a third connecting inclined rod (5.3) and a fourth connecting inclined rod (5.4).
7. The eccentric automobile wire harness tension resistance detection system according to claim 6, wherein: the spiral spring piece (31) is made of 50CrVA spring steel.
8. The working method of the eccentric automobile wire harness tension-resistant detection system according to claim 7, characterized in that:
step one, enabling a first outer ring (1.1), a second outer ring (1.2), a third outer ring (1.3), a fourth outer ring (1.4) and four floating inner rings (32) to be in a coaxial state;
controlling the upper slewing ring (2) to ascend, so that all the flexible wire harnesses (16) waiting for the tension test are gradually changed from a loose state to a tight state;
step three, the horizontal telescopic rod (22) extends out to enable the four floating inner ring rings (32) to be respectively converted into an eccentric state from a coaxial state with the first outer ring (1.1), the second outer ring (1.2), the third outer ring (1.3) and the fourth outer ring (1.4);
and step five, an output shaft (7) of the motor (25) drives the upper slewing ring (2) and the lower slewing ring (6) to rotate along the axis.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111133044.8A CN113945474A (en) | 2021-09-27 | 2021-09-27 | Eccentric automobile wire harness tension resistance detection system and working method |
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| CN202111133044.8A CN113945474A (en) | 2021-09-27 | 2021-09-27 | Eccentric automobile wire harness tension resistance detection system and working method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116698635A (en) * | 2023-05-16 | 2023-09-05 | 德维嘉汽车电子系统(无锡)有限公司 | Synchronous comparison type test platform for multiple wire harnesses and detection comparison method |
| CN116718949A (en) * | 2023-05-30 | 2023-09-08 | 德维嘉汽车电子系统(无锡)有限公司 | Wire harness test system and test method in electrified state |
| CN117277155A (en) * | 2023-10-09 | 2023-12-22 | 德维嘉汽车电子系统(无锡)有限公司 | Wire harness rubber sleeve expansion type threading process device |
-
2021
- 2021-09-27 CN CN202111133044.8A patent/CN113945474A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116698635A (en) * | 2023-05-16 | 2023-09-05 | 德维嘉汽车电子系统(无锡)有限公司 | Synchronous comparison type test platform for multiple wire harnesses and detection comparison method |
| CN116718949A (en) * | 2023-05-30 | 2023-09-08 | 德维嘉汽车电子系统(无锡)有限公司 | Wire harness test system and test method in electrified state |
| CN116718949B (en) * | 2023-05-30 | 2023-12-08 | 德维嘉汽车电子系统(无锡)有限公司 | Wire harness test system and test method in electrified state |
| CN117277155A (en) * | 2023-10-09 | 2023-12-22 | 德维嘉汽车电子系统(无锡)有限公司 | Wire harness rubber sleeve expansion type threading process device |
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Application publication date: 20220118 |