CN113376006B - Performance test system and test method for copper-core low-voltage cable after manufacturing and processing - Google Patents
Performance test system and test method for copper-core low-voltage cable after manufacturing and processing Download PDFInfo
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- CN113376006B CN113376006B CN202110670590.9A CN202110670590A CN113376006B CN 113376006 B CN113376006 B CN 113376006B CN 202110670590 A CN202110670590 A CN 202110670590A CN 113376006 B CN113376006 B CN 113376006B
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- G—PHYSICS
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- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G—PHYSICS
- G01—MEASURING; TESTING
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- 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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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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
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
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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
- G01N3/22—Investigating strength properties of solid materials by application of mechanical stress by applying steady torsional forces
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Abstract
The invention provides a performance test system and a test method for a copper core low-voltage cable after manufacturing and processing, which comprises a double-item detection mechanism, a single-item detection mechanism and a joint control mechanism, wherein the conventional test device for the mechanical performance of the cable can only meet the test of the cable with one type size, and when the cables with different types and sizes are subjected to the mechanical performance test, the test can be carried out only by replacing corresponding type equipment, so that the mechanical performance test of the cable has limitation and higher test cost, and the test of the mechanical performance of the cable is divided into a plurality of specific small tests.
Description
Technical Field
The invention relates to the technical field of cable mechanical performance testing, in particular to a system and a method for testing the performance of a copper-core low-voltage cable after manufacturing and processing.
Background
The copper core low-voltage cable is made of one or more mutually insulated conductors which are coated with insulation and protective layers, and is a conducting wire for transmitting power or information from one place to another place, wherein copper in a cable product is a mainly used conductor material; the copper core low-voltage cable is used for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station outgoing lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater; at present, with the development of social economy, the using amount of the cable is rapidly increased, the quality requirement of the cable is continuously improved, and the requirements of the cable on bearing mechanical external force and equivalent tension and adapting to the external environment are particularly high;
the copper core low-voltage cable is required to be subjected to strict performance tests after being manufactured and processed, only test data meet standards and can be delivered, and a detection link is also an important link in cable production, wherein the mechanical performance test of the cable is a large item, and the mechanical performance test is divided into a plurality of specific small tests, including a mechanical strength test, a bending performance test, a torsion performance test and the like;
the existing testing device for the mechanical performance of the cable can only meet the requirements of testing the cable with one type size, when the cables with different types and sizes are tested for the mechanical performance, the testing device can be tested only by changing corresponding type equipment, so that the mechanical performance testing of the cable is limited, the testing cost is higher, the testing of the mechanical performance of the cable is divided into a plurality of specific small tests, the existing testing device for the mechanical performance of the cable cannot meet the operation execution of various tests, the comprehensive detection of different mechanical performances of the cable is difficult to ensure, and the strict performance testing requirements of the cable after manufacturing and processing cannot be met; therefore, the invention provides a system and a method for testing the performance of a copper-core low-voltage cable after manufacturing and processing.
Disclosure of Invention
In order to achieve the above object, the invention adopts the following technical scheme that a performance testing system after manufacturing and processing of a copper core low-voltage cable comprises a double-item detection mechanism, a single-item detection mechanism and a joint control mechanism, wherein the double-item detection mechanism is symmetrically arranged on the end surface of the joint control mechanism and is connected with the joint control mechanism in a sliding fit manner, the single-item detection mechanism is arranged between the two double-item detection mechanisms, and the single-item detection mechanism is arranged on the end surface of the joint control mechanism; wherein:
the double-item detection mechanism comprises an H-shaped bracket, a scale mark I, a screw I, a rocking wheel, an upright sliding frame, a transferring unit and a clamping unit; the H-shaped support is installed on the end face of the joint control mechanism, the edge of the end face of the H-shaped support is provided with a first scale mark, the H-shaped support is provided with a first lead screw through a bearing, one side shaft end of the first lead screw is provided with a rocking wheel, the first lead screw is mutually connected with a vertical sliding frame through a thread fit mode, the vertical sliding frame is installed on the H-shaped support through a sliding fit mode, the vertical sliding frame is provided with a plurality of adjusting units which are linearly arranged along the length direction of the vertical sliding frame through the bearing, the adjusting units are mutually connected with the joint control mechanism through a sliding fit mode, and the adjusting units are provided with a plurality of clamping units which are annularly distributed along the circumferential direction of the adjusting units through a sliding fit mode; the shaft head of the cable is clamped and fixed by the clamping unit controlled by the transferring unit, then the first screw rod is rotated through the rocking wheel, the first screw rod controls the vertical sliding frame to move on the H-shaped support in a spiral mode, the vertical sliding frame slides and translates outwards, the cable is tightly stretched and straightened, the moving distance is determined according to the scale mark, the tensile strength and the elongation of the cable are tested, and the tensile performance of the cable is known.
The transfer unit comprises a universal joint, a linkage rod, a lead screw shaft sleeve, a ring sleeve circular frame and a rotating wheel; the universal joint is arranged above the H-shaped support through a bearing, a linkage rod is arranged at one side shaft end of the universal joint and is connected with the joint control mechanism in a sliding fit mode, a lead screw shaft sleeve is arranged at the other side shaft end of the universal joint, a plurality of clamping units which are distributed annularly along the circumferential direction of the lead screw shaft sleeve are arranged on the lead screw shaft sleeve in a sliding fit mode, the clamping units are connected with a ring sleeve circular frame in a movable connection mode, the ring sleeve circular frame is arranged on the lead screw shaft sleeve in a thread fit mode, and a rotating wheel is arranged at one side shaft end of the ring sleeve circular frame; rotate the ring cover circle frame through the runner, make the direction spiral displacement of ring cover circle frame along lead screw shaft sleeve, according to the toper inclined plane that ring cover circle frame inner circle lasts the increase, conflict in step to the clamping unit, it is fixed to make the clamping unit carry out the centre gripping to the spindle nose of cable, can satisfy the centre gripping of multiple diameter size cable fixed, can lead the slip translation when cable pulling force capability test through the gangbar, and the unsmooth cooperation of gangbar straight-tooth wheel, the rotatory action is realized to accessible straight-tooth wheel transmission gangbar, and the universal joint can adjust the direction when cable capability test in a flexible way and remove, satisfy the rotatory action and the lift action of torsion performance test and bending performance test.
Preferably, the clamping unit comprises a clamping plate, a guide rod, a floating upright rod, a cylindrical spring and a ball; the clamping plate is positioned on the inner side of the screw shaft sleeve, guide rods are symmetrically arranged on the clamping plate and are arranged on the screw shaft sleeve in a sliding fit mode, floating vertical rods are arranged between the guide rods and are arranged on the clamping plate, the floating vertical rods are connected with the screw shaft sleeve in a sliding fit mode, a cylindrical spring is arranged on the outer ring surface of each floating vertical rod and is connected between the upper end of each floating vertical rod and the outer side surface of the screw shaft sleeve, balls are arranged on the shaft ends of the floating vertical rods, and the balls are connected with the ring sleeve round frame in a rolling mode; the ball is rotated to push against the contact ball through the continuously increased conical surface of the inner ring of the circular ring frame, so that the floating upright rod slides inwards, the shaft head of the cable is clamped and fixed through the clamping plate, the guide rod guides the clamping plate to move in the horizontal direction for clamping, and the cylindrical spring always pushes against the floating upright rod, so that the ball on the floating upright rod is in close contact with the surface of the inner ring of the circular ring frame, and the clamping action is stabilized.
Preferably, the single detection mechanism comprises a vertical plate support, a motor, a rotating shaft, a gear with missing teeth, a ring rack, a reciprocating unit and a positioning unit; the vertical plate support is arranged on the end face of the combined control mechanism, a motor is arranged on the side wall of the vertical plate support through a motor base, an output shaft of the motor is mutually connected with one side shaft end of a rotating shaft through a coupler, the rotating shaft is arranged on the vertical plate support through a bearing, gear-lacking gears are symmetrically arranged on the rotating shaft and are mutually connected with ring frame racks in a meshing rotation mode, the ring frame racks are respectively arranged on the side wall of the vertical plate support in a sliding fit mode, a reciprocating unit is arranged between the two ring frame racks, positioning units are symmetrically arranged on two sides of the reciprocating unit, and the positioning units are arranged on the side wall of the vertical plate support; when the cable is subjected to bending performance test, the vertical sliding frame moves to a zero initial position of the first scale mark, the clamped cable is not tightened and loosened, the cable has a stroke capable of being bent and moved during the bending test, then the cable is rolled and clamped by the reciprocating unit and the positioning unit, the friction resistance of the cable during the bending performance test is reduced, the rotating shaft is driven to rotate by the motor, the gear with the missing teeth is meshed with the driving ring rack, the ring rack is subjected to reciprocating sliding translation along the vertical direction of the vertical plate support, the reciprocating unit synchronously performs vertical reciprocating movement and forms a V-shaped included angle with the positioning unit, the cable is continuously and uniformly bent repeatedly, the cable is subjected to the bending test, and the bending performance of the cable is known.
Preferably, the reciprocating unit comprises a guide vertical frame, a floating slide rod, a compression spring, a straight rod, a cross rod and a roller; the guide vertical frame is installed on the top end face of the ring frame rack, a waist-shaped groove is formed in the guide vertical frame and is vertically arranged, floating slide rods are arranged on the guide vertical frame in a sliding fit mode, compression springs are arranged on the outer ring face of each floating slide rod and are connected between the floating slide rods and the inner wall of the upper side of the guide vertical frame, a straight rod is arranged between the two floating slide rods, a cross rod is arranged right below the straight rod and is installed on the side wall of the ring frame rack, a plurality of rollers which are linearly arranged along the length direction of the straight rod and the cross rod are arranged on the outer rings of the straight rod and the cross rod through bearings, the outer rings of the rollers are arranged in a conical shape, and the reciprocating unit and the positioning unit are of the same structure; the waist-shaped groove is formed in the vertical guide frame, the movement in the vertical direction of the floating slide rod is guided, the bending test of cables with various diameter sizes can be met, the floating slide rod is pushed by the compression spring, the straight rod is lowered, the cables are tightly rolled and clamped by the rollers on the straight rod and the cross rod, the outer ring of each roller is in conical arrangement, and the rolling clamp can be used for rolling and clamping cables with various diameter sizes.
Preferably, the linkage control mechanism comprises a beam bottom plate frame, a straight gear and a linkage unit; the side walls of two ends of the cross beam bottom plate frame are respectively provided with a plurality of straight gears which are linearly arranged along the length direction of the cross beam bottom plate frame through bearings, the straight gears are mutually connected with the linkage units in a meshing rotation mode, the linkage units are respectively arranged on the side walls of the cross beam bottom plate frame, and the two linkage units are arranged in a staggered mode; the straight gears are pushed and rotated through the linkage units which are arranged in a staggered mode, shaft heads at two ends of the cable rotate in opposite directions, and therefore the torsion performance of the cable is tested.
Preferably, the linkage unit comprises a guide sliding seat, a second screw rod, a hand wheel, a spur rack and a second scale mark; the guide sliding seat is installed on the side wall of the cross beam bottom plate frame, a second lead screw is installed on the shaft end on one side of the guide sliding seat in a thread matching mode, a hand wheel is installed on the shaft end on one side of the second lead screw, the shaft end on the other side of the second lead screw is connected with the shaft end of a straight rack through a bearing, the straight rack is installed on the guide sliding seat in a sliding matching mode, the straight rack is connected with the straight gear in a meshing mode, and a second scale mark is installed on the side wall of the guide sliding seat; two pairs of straight racks are supported and pushed by a hand wheel swing lead screw, the straight racks slide and translate along the direction of a guide sliding seat, the straight racks are meshed with the push-turn straight gears, the straight gear transmission transfer unit synchronously rotates, the clamping unit rotates opposite directions of shaft heads at two ends of the cable, the plastic deformation of the cable under torsion is detected, the moving distance is determined according to the second scale mark, and therefore the torsion performance of the cable is known.
Preferably, a plurality of grooves which are annularly distributed along the circumferential direction of the outer ring surface of the linkage rod are arranged on the outer ring surface of the linkage rod, so that the linkage rod can be guided to horizontally move, the slip phenomenon is prevented, and the linkage rod is practically matched with a straight gear in a concave-convex mode to realize synchronous rotation.
Preferably, the inner ring surface of the circular ring sleeve frame is conical, so that the circular ring sleeve frame can conveniently abut against the clamping unit, and the clamping unit can be loosened according to the conical inclination change of the inner ring surface of the circular ring sleeve frame.
Preferably, evenly be provided with tooth on the centre gripping terminal surface of grip block, be convenient for increase frictional force, can be more firm carry out the centre gripping with the cable and fix.
In addition, the invention also provides a test method of the performance test system after the copper core low-voltage cable is manufactured and processed, which comprises the following steps:
s1, clamping and fixing the cable: clamping and fixing the shaft heads at two ends of the cable through a clamping unit, and then carrying out classification test according to mechanical properties;
s2, tensile force performance test: the H-shaped support is translated outwards by swinging the first lead screw through the swinging wheel, so that the cable is pulled, the cable is tensioned and straightened, the tensile strength and the elongation are determined according to the first scale mark, and the tensile performance of the cable is known;
s3, torsion performance test: the joint control mechanism drives the transferring unit to rotate, so that shaft heads at two ends of the cable rotate in opposite directions, plastic deformation of the cable under torsion is detected, and the torsion performance of the cable is determined;
s4, bending performance test: the cable is repeatedly bent through the single detection mechanism, whether cracks appear on the surface of the cable in the bending process is detected, and the bending resistance of the cable is determined.
The invention has the beneficial effects that:
the invention can reduce the friction resistance when the circular frame of the ring sleeve is in rotary conflict through the contact connection of the balls and the circular frame of the ring sleeve, so that the clamping action is flexible to operate, the cable is clamped and fixed through the teeth on the clamping end surface of the clamping plate, the friction force is increased, and the cable can be more firmly clamped and fixed, thereby stabilizing the stability of the cable in the tension performance test, the torsion performance test and the bending performance test, preventing the cable from falling off in the test process, and meeting the requirements of the clamping and fixing tests of the cables with various diameters.
The universal joint can flexibly adjust the direction movement during the cable performance test, and can meet the rotating action and the reciprocating lifting action of the torsion performance test and the bending performance test, so that the test of the mechanical performance of the cable can be divided into a plurality of specific tests, the range of the mechanical performance of the cable test is improved, the practicability is enhanced, and whether the quality after the cable is produced meets the use requirement or not is judged.
The cable tension performance test device can guide sliding translation during cable tension performance test through the linkage rod to enable the cable to be tensioned and straightened to prevent slipping, and then determines a moving distance according to the first scale mark, so that the tensile strength and the elongation of the cable are tested, the tension performance of the cable is known, the grooves in the linkage rod are in concave-convex fit with the straight gears, the straight gears are pushed and rotated through the linkage units which are arranged in a staggered mode, so that the straight gears drive the linkage rod to rotate synchronously, the rotating action of the cable torsion performance test is executed, the clamping units rotate the shaft heads at two ends of the cable in opposite directions, the plastic deformation of the cable under torsion is detected, the moving distance is determined according to the second scale mark, and therefore the torsion performance of the cable is known.
The invention can meet the bending test of cables with various diameter sizes by arranging the waist-shaped groove on the guide vertical frame to guide the movement of the floating slide bar in the vertical direction, and then the cable is rolled and clamped by the conical outer ring of the roller, thereby improving the range of the rolling and clamping support and meeting the action of the rolling and clamping support of the cables with various diameter sizes, so that the friction resistance of the cable in the bending performance test is reduced, the friction force is prevented from influencing the result of the bending performance test, the test process is stabilized, when the reciprocating unit synchronously reciprocates up and down, and a V-shaped included angle is formed with the positioning unit, the cable is continuously and uniformly bent repeatedly, the bending test of the cable is carried out, and the bending performance of the cable is known.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a perspective view of the present invention in a primary viewing position;
FIG. 2 is a perspective view of the present invention in a rear-view position;
FIG. 3 is an enlarged view of a portion of the invention at A in FIG. 2;
FIG. 4 is a perspective view of a single item detection mechanism of the present invention;
FIG. 5 is a partial perspective sectional view of the dual detection mechanism and the joint control mechanism of the present invention;
FIG. 6 is an enlarged view of a portion of the invention at B in FIG. 5;
FIG. 7 is a schematic perspective view of a portion of the dual detection mechanism and the joint control mechanism of the present invention;
fig. 8 is a partial enlarged view of the invention at C in fig. 7.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described below by combining with the specific drawings, and it is to be noted that the embodiments and the features in the embodiments can be combined with each other in the application without conflict.
As shown in fig. 1 to 8, a performance testing system after manufacturing and processing of a copper core low-voltage cable comprises a double-item detection mechanism 1, a single-item detection mechanism 2 and a joint control mechanism 3, wherein the double-item detection mechanism 1 is symmetrically arranged on the end surface of the joint control mechanism 3, the double-item detection mechanism 1 and the joint control mechanism 3 are connected with each other, the single-item detection mechanism 2 is arranged between the two double-item detection mechanisms 1, and the single-item detection mechanism 2 is installed on the end surface of the joint control mechanism 3; wherein:
the double-item detection mechanism 1 comprises an H-shaped support 10, a scale mark I11, a screw I12, a rocking wheel 13, an upright sliding frame 14, a transferring unit 15 and a clamping unit 16; the H-shaped support 10 is installed on the end face of the cross beam bottom plate frame 30, the edge of the end face of the H-shaped support 10 is provided with a scale mark I11, the H-shaped support 10 is provided with a lead screw I12 through a bearing, one side shaft end of the lead screw I12 is provided with a rocking wheel 13, the lead screw I12 is mutually connected with an upright sliding frame 14 through a thread fit mode, the upright sliding frame 14 is installed on the H-shaped support 10 through a sliding fit mode, the upright sliding frame 14 is provided with a plurality of adjusting units 15 which are linearly arranged along the length direction of the upright sliding frame through the bearing, the adjusting units 15 are mutually connected with a straight gear 31 through the sliding fit mode, and the adjusting units 15 are provided with a plurality of clamping units 16 which are annularly distributed along the circumferential direction of the adjusting units in the sliding fit mode; the shaft head of the cable is clamped and fixed by the clamping unit 16 controlled by the transferring unit 15, then the first lead screw 12 is rotated by the rocking wheel 13, the first lead screw 12 controls the vertical sliding frame 14 to move on the H-shaped support 10 in a spiral mode, the vertical sliding frame 14 slides and translates outwards, the cable is tightened and straightened, the moving distance is determined according to the scale mark 11, the tensile strength and the elongation of the cable are tested, and the tensile force performance of the cable is known.
The maneuvering unit 15 comprises a universal joint 151, a linkage rod 152, a lead screw shaft sleeve 153, a ring sleeve circular frame 154 and a rotating wheel 155; the universal joint 151 install in H type support 10 top through the bearing, the gangbar 152 is installed to one side axle head of universal joint 151, and gangbar 152 passes through sliding fit mode and straight-teeth gear 31 interconnect, be provided with a plurality of recesses that are the annular along its circumferencial direction and distribute on the outer lane face of gangbar 152, be convenient for the horizontal migration of direction gangbar 152, be located the opposite side axle head of universal joint 151 and install lead screw axle sleeve 153, be provided with a plurality of clamping unit 16 that are the annular along its circumferencial direction and distribute through sliding fit on the lead screw axle sleeve 153, and clamping unit 16 is through swing joint mode and ring cover circle frame 154 interconnect, ring cover circle frame 154 installs on lead screw axle sleeve 153 through the screw-thread fit mode, be located and install runner 155 on one side of ring cover circle frame 154, the inner lane face of ring cover circle frame 154 is the toper setting, be convenient for conflicting clamping unit 16, the unclamping operation of the clamping unit 16 is realized according to the conical inclination change of the inner ring surface of the ring sleeve circular frame 154; the ring sleeve circular frame 154 is rotated through the rotating wheel 155, the ring sleeve circular frame 154 is enabled to spirally move along the guiding direction of the lead screw shaft sleeve 153, the clamping unit 16 is synchronously abutted according to the tapered inclined plane which is continuously increased by the inner ring of the ring sleeve circular frame 154, the shaft head of the cable is clamped and fixed by the clamping unit 16, the clamping and fixing of cables with various diameter sizes can be met, the cables can be guided to slide and translate during the tensile force performance test of the cable through the linkage rod 152, the linkage rod 152 is in concave-convex fit with the straight gear 31, the linkage rod 152 can be driven by the straight gear 31 to realize the rotation action, the universal joint 151 can flexibly adjust the direction movement during the cable performance test, and the rotation action and the lifting action of the torsion performance test and the bending performance test are met.
The clamping unit 16 comprises a clamping plate 161, a guide rod 162, a floating upright rod 163, a cylindrical spring 164 and a ball 165; the clamping plate 161 is positioned on the inner side of the lead screw shaft sleeve 153, and teeth are uniformly arranged on the clamping end face of the clamping plate 161, so that friction force is increased conveniently, and a cable can be clamped and fixed more firmly; the clamping plate 161 is symmetrically provided with guide rods 162, the guide rods 162 are arranged on the lead screw shaft sleeve 153 in a sliding fit mode, floating vertical rods 163 are arranged between the guide rods 162, the floating vertical rods 163 are arranged on the clamping plate 161, the floating vertical rods 163 are mutually connected with the lead screw shaft sleeve 153 in a sliding fit mode, the outer ring surface of each floating vertical rod 163 is provided with a cylindrical spring 164, the cylindrical springs 164 are connected between the upper end of each floating vertical rod 163 and the outer side surface of the lead screw shaft sleeve 153, balls 165 are arranged at the shaft ends of the floating vertical rods 163, and the balls 165 are mutually connected with the ring sleeve circular frame 154 in a rolling mode; the tapered surface continuously enlarged through the inner ring of the ring sleeve circular frame 154 rotates to push the contact ball 165, so that the floating upright rod 163 slides inwards, the shaft head of the cable is clamped and fixed through the clamping plate 161, the clamping plate 161 is guided to move in the horizontal direction for clamping through the guide rod 162, the cylindrical spring 164 always pushes the floating upright rod 163, the ball 165 on the floating upright rod 163 is in close contact with the inner ring surface of the ring sleeve circular frame 154, and the clamping action is stabilized.
The joint control mechanism 3 comprises a crossbeam baseplate frame 30, a straight gear 31 and a linkage unit 32; the side walls of the two ends of the crossbeam bottom plate frame 30 are respectively provided with a plurality of straight gears 31 which are linearly arranged along the length direction of the crossbeam bottom plate frame through bearings, the straight gears 31 are mutually connected with linkage units 32 in a meshing rotation mode, the linkage units 32 are respectively arranged on the side walls of the crossbeam bottom plate frame 30, and the two linkage units 32 are arranged in a staggered mode; the straight gears 31 are pushed and rotated through the linkage units 32 which are arranged in a staggered mode, so that shaft heads at two ends of the cable rotate in opposite directions, and the torsion performance of the cable is tested.
The linkage unit 32 comprises a guide sliding seat 321, a second lead screw 322, a hand wheel 323, a spur rack 324 and a second scale mark 325; the guide sliding seat 321 is installed on the side wall of the crossbeam baseplate frame 30, a second lead screw 322 is installed on the shaft end on one side of the guide sliding seat 321 in a thread matching mode, a hand wheel 323 is installed on the shaft end on one side of the second lead screw 322, the shaft end on the other side is connected with the shaft end of a spur rack 324 through a bearing, the spur rack 324 is installed on the guide sliding seat 321 in a sliding matching mode, the spur rack 324 is connected with a spur gear 31 in a meshing mode, and a second scale mark 325 is installed on the side wall of the guide sliding seat 321; the straight rack 324 is pushed against by swinging the second lead screw 322 through the hand wheel 323, the straight rack 324 slides and translates along the direction of the guide sliding seat 321, the straight rack 324 is meshed with the push-turn straight gear 31, the transfer unit 15 is driven to synchronously rotate through the straight gear 31, the clamping unit 16 rotates the shaft heads at two ends of the cable in opposite directions, the plastic deformation of the cable under torsion is detected, the moving distance is determined according to the second scale mark 325, and therefore the torsion performance of the cable is known.
The single detection mechanism 2 comprises a vertical plate bracket 20, a motor 21, a rotating shaft 22, a gear with missing teeth 23, a ring rack 24, a reciprocating unit 25 and a positioning unit 26; the vertical plate support 20 is arranged on the end face of the cross beam bottom plate frame 30, the motor 21 is arranged on the side wall of the vertical plate support 20 through a motor base, the output shaft of the motor 21 is connected with the shaft end on one side of the rotating shaft 22 through a coupler, the rotating shaft 22 is arranged on the vertical plate support 20 through a bearing, the rotating shaft 22 is symmetrically provided with tooth-lacking gears 23, the tooth-lacking gears 23 are connected with ring frame racks 24 in a meshing rotation mode, the ring frame racks 24 are respectively arranged on the side wall of the vertical plate support 20 in a sliding fit mode, a reciprocating unit 25 is arranged between the two ring frame racks 24, positioning units 26 are symmetrically arranged on two sides of the reciprocating unit 25, and the positioning units 26 are arranged on the side wall of the vertical plate support 20; when a cable is subjected to a bending performance test, the vertical sliding frame 14 moves to a zero initial position of the scale mark I11, so that the clamped cable is not tightened and loosened, the cable has a stroke of bending movement during the bending test, then the cable is rolled and clamped through the reciprocating unit 25 and the positioning unit 26, so that the friction resistance during the bending performance test of the cable is reduced, the motor 21 drives the rotating shaft 22 to rotate, so that the tooth-lacking gear 23 is clockwise meshed with the driving annular frame rack 24, when a tooth opening on the tooth-lacking gear 23 is meshed and connected with a left tooth opening on the driving annular frame rack 24, the annular frame rack 24 slides upwards and translates along the vertical direction of the vertical plate support 20, when a tooth opening on the tooth-lacking gear 23 is meshed and separated with a left tooth opening on the annular frame rack 24, a tooth opening on the tooth-lacking gear 23 is meshed and connected with a right tooth opening on the driving annular frame rack 24, so that the annular frame rack 24 slides downwards and translates along the vertical direction of the vertical plate support 20, the reciprocating lifting movement of the ring rack 24 is realized, the reciprocating unit 25 is linked to synchronously lift and move, and a V-shaped included angle is formed between the reciprocating unit and the positioning unit 26, so that the cable is continuously and uniformly bent repeatedly, the bending test is carried out on the cable, and the bending performance of the cable is known.
The reciprocating unit 25 comprises a guide vertical frame 251, a floating slide rod 252, a compression spring 253, a straight rod 254, a cross rod 255 and a roller 256; the guide vertical frame 251 is installed on the top end face of the ring frame rack 24, a waist-shaped groove is formed in the guide vertical frame 251 and is vertically arranged, floating slide rods 252 are arranged on the guide vertical frame 251 in a sliding fit mode, a compression spring 253 is arranged on the outer ring face of each floating slide rod 252 and is connected between each floating slide rod 252 and the upper inner wall of the guide vertical frame 251, a straight rod 254 is arranged between the two floating slide rods 252, a cross rod 255 is arranged right below the straight rod 254 and is installed on the side wall of the ring frame rack 24, a plurality of rollers 256 which are linearly arranged along the length direction of the rollers are arranged on the outer rings of the straight rod 254 and the cross rod 255 through bearings, the outer rings of the rollers 256 are arranged in a conical shape, and the reciprocating unit 25 and the positioning unit 26 are of the same structure; through having seted up waist type groove on the vertical frame 251 of direction, lead the removal of the slide bar 252 vertical direction that floats, can satisfy the cable of multiple diameter size and carry out bending test, use compression spring 253 to support and push away the slide bar 252 that floats, make straight-bar 254 descend, carry out inseparable roll clamp through gyro wheel 256 on straight-bar 254 and the horizontal pole 255 and hold in the palm to gyro wheel 256's outer lane personally submits the toper setting, can roll to the cable of multiple diameter size and press from both sides the support.
In addition, the invention also provides a test method of the performance test system after the copper core low-voltage cable is manufactured and processed, which comprises the following steps:
s1, clamping and fixing the cable: the continuously enlarged conical surface of the inner ring of the ring sleeve circular frame 154 rotates to push the contact ball 165, so that the floating upright rod 163 slides inwards, shaft heads at two ends of the cable are clamped and fixed through the clamping plate 161, and then classification test is carried out according to mechanical performance;
s2, tensile force performance test: the first lead screw 12 is rotated through the rocking wheel 13, the first lead screw 12 controls the vertical sliding frame 14 to move on the H-shaped support 10 in a spiral mode, the vertical sliding frame 14 conducts sliding translation towards the outer side, a cable is stretched tightly and straightened, the moving distance is determined according to the first scale mark 11, the tensile strength and the elongation rate of the cable are tested, and the tensile force performance of the cable is known;
s3, torsion performance test: the straight rack 324 is pushed against by swinging the second lead screw 322 through the hand wheel 323, the straight rack 324 slides and translates along the direction of the guide sliding seat 321, the straight rack 324 is meshed with the push-turn straight gear 31, the transfer unit 15 is driven to synchronously rotate through the straight gear 31, the clamping unit 16 rotates the shaft heads at two ends of the cable in opposite directions, the plastic deformation of the cable under torsion is detected, and the moving distance is determined according to the second scale mark 325, so that the torsion performance of the cable is known;
s4, bending performance test: the cable is rolled and clamped through the reciprocating unit 25 and the positioning unit 26, the friction resistance of the cable during bending performance testing is reduced, the rotating shaft 22 is driven to rotate through the motor 21, the gear with teeth 23 is meshed with the driving ring rack 24, the ring rack 24 slides and translates in a reciprocating mode along the vertical direction of the vertical plate support 20, the reciprocating unit 25 synchronously moves up and down in a reciprocating mode and forms a V-shaped included angle with the positioning unit 26, the cable is continuously and uniformly bent repeatedly, and therefore bending testing is conducted on the cable, and the bending performance of the cable is known;
the foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a performance test system after copper core low tension cable manufacturing, includes binomial detection mechanism (1), singleness detection mechanism (2) and allies oneself with accuse mechanism (3), its characterized in that: the end face of the joint control mechanism (3) is symmetrically provided with double detection mechanisms (1), the double detection mechanisms (1) are connected with the joint control mechanism (3) in a sliding fit mode, a single detection mechanism (2) is arranged between the two double detection mechanisms (1), and the single detection mechanism (2) is arranged on the end face of the joint control mechanism (3); wherein:
the double-item detection mechanism (1) comprises an H-shaped support (10), a scale mark I (11), a screw rod I (12), a rocking wheel (13), an upright sliding frame (14), a transferring unit (15) and a clamping unit (16); the H-shaped support (10) is installed on the end face of the joint control mechanism (3), a scale mark I (11) is arranged on the edge of the end face of the H-shaped support (10), a lead screw I (12) is installed on the H-shaped support (10) through a bearing, a rocking wheel (13) is installed on the shaft end of one side of the lead screw I (12), the lead screw I (12) is connected with an upright sliding frame (14) in a threaded fit mode, the upright sliding frame (14) is installed on the H-shaped support (10) in a sliding fit mode, a plurality of adjusting units (15) which are linearly arranged along the length direction of the upright sliding frame (14) are arranged on the upright sliding frame (14) through bearings, the adjusting units (15) are connected with the joint control mechanism (3) through a sliding fit mode, and a plurality of clamping units (16) which are annularly distributed along the circumferential direction of the adjusting units (15) are arranged on the adjusting units (15) through a sliding fit mode;
the transfer unit (15) comprises a universal joint (151), a linkage rod (152), a lead screw shaft sleeve (153), a ring sleeve circular frame (154) and a rotating wheel (155); the universal joint (151) is arranged above the H-shaped support (10) through a bearing, a linkage rod (152) is arranged at one side shaft end of the universal joint (151), the linkage rod (152) is connected with the joint control mechanism (3) in a sliding fit mode, a lead screw shaft sleeve (153) is arranged at the other side shaft end of the universal joint (151), a plurality of clamping units (16) which are annularly distributed along the circumferential direction of the lead screw shaft sleeve (153) are arranged on the lead screw shaft sleeve (153) in a sliding fit mode, the clamping units (16) are connected with a ring sleeve circular frame (154) in a movable connection mode, the ring sleeve circular frame (154) is arranged on the lead screw shaft sleeve (153) in a threaded fit mode, and a rotating wheel (155) is arranged at one side shaft end of the ring sleeve circular frame (154);
the clamping unit (16) comprises a clamping plate (161), a guide rod (162), a floating upright rod (163), a cylindrical spring (164) and a ball (165); grip block (161) are located the inboard of lead screw axle sleeve (153), and grip block (161) are gone up the symmetry and are provided with guide arm (162), and guide arm (162) install on lead screw axle sleeve (153) through the sliding fit mode, guide arm (162) between be provided with unsteady pole setting (163), unsteady pole setting (163) are installed on grip block (161), and unsteady pole setting (163) are through sliding fit mode and lead screw axle sleeve (153) interconnect, the outer lane face of unsteady pole setting (163) is provided with cylindrical spring (164), cylindrical spring (164) are connected between the upper end of unsteady pole setting (163) and the lateral surface of lead screw axle sleeve (153), are located to be provided with ball (165) on the axle head of unsteady pole setting (163), and ball (165) are through roll mode and ring cover circle frame (154) interconnect.
2. The system for testing the performance of the copper-core low-voltage cable after manufacturing and processing according to claim 1, wherein: the single detection mechanism (2) comprises a vertical plate bracket (20), a motor (21), a rotating shaft (22), a gear with missing teeth (23), a ring rack (24), a reciprocating unit (25) and a positioning unit (26); the vertical plate support (20) is installed on the end face of the combined control mechanism (3), the motor (21) is installed on the side wall of the vertical plate support (20) through a motor base, the output shaft of the motor (21) is connected with the shaft end of one side of the rotating shaft (22) through a coupler, the rotating shaft (22) is installed on the vertical plate support (20) through a bearing, the rotating shaft (22) is symmetrically provided with tooth-lacking gears (23), the tooth-lacking gears (23) are connected with ring frame racks (24) through a meshing rotation mode, the ring frame racks (24) are installed on the side wall of the vertical plate support (20) through a sliding fit mode, two reciprocating units (25) are arranged between the ring frame racks (24), positioning units (26) are symmetrically arranged on two sides of the reciprocating units (25), and the positioning units (26) are installed on the side wall of the vertical plate support (20).
3. The system for testing the performance of the copper-core low-voltage cable after manufacturing and processing according to claim 2, wherein: the reciprocating unit (25) comprises a guide vertical frame (251), a floating slide rod (252), a compression spring (253), a straight rod (254), a cross rod (255) and a roller (256); the guide vertical frame (251) is installed on the top end face of the ring frame rack (24), a waist-shaped groove is formed in the guide vertical frame (251), the waist-shaped groove is vertically arranged, a floating slide bar (252) is arranged on the guide vertical frame (251) in a sliding fit mode, a compression spring (253) is arranged on the outer ring face of the floating slide bar (252), the compression spring (253) is connected between the floating slide bar (252) and the inner wall of the upper side of the guide vertical frame (251), a straight bar (254) is arranged between the two floating slide bars (252), a cross bar (255) is arranged right below the straight bar (254), the cross bar (255) is installed on the side wall of the ring frame rack (24), a plurality of rollers (256) which are linearly arranged along the length direction of the rollers are arranged on the outer rings of the straight bar (254) and the cross bar (255) through bearings, the outer ring face of the rollers (256) is in a conical arrangement, the reciprocating unit (25) and the positioning unit (26) are of the same structure.
4. The system for testing the performance of the copper-core low-voltage cable after manufacturing and processing according to claim 1, wherein: the joint control mechanism (3) comprises a crossbeam bottom plate frame (30), a straight gear (31) and a linkage unit (32); be provided with a plurality of spur gears (31) that are linear arrangement along its length direction through the bearing respectively on the both ends lateral wall of crossbeam bottom plate frame (30), and spur gear (31) rotate the mode through the meshing and link unit (32) interconnect, link unit (32) install respectively on the lateral wall of crossbeam bottom plate frame (30), two link unit (32) be crisscross the arranging.
5. The system for testing the performance of the copper-core low-voltage cable after manufacturing and processing according to claim 4, wherein: the linkage unit (32) comprises a guide sliding seat (321), a second lead screw (322), a hand wheel (323), a spur rack (324) and a second scale mark (325); lead slide (321) install on the lateral wall of crossbeam bottom plate frame (30), lead and install lead screw two (322) through the screw-thread fit mode on one side axle head of slide (321), hand wheel (323) are installed to one side axle head of lead screw two (322), the axle head interconnect of opposite side axle head through bearing and spur rack (324), install on leading slide (321) through the sliding fit mode spur rack (324), and spur rack (324) are through meshing mode and spur gear (31) interconnect, be located and install scale sign two (325) on the lateral wall of guide slide (321).
6. The system for testing the performance of the copper-core low-voltage cable after manufacturing and processing according to claim 1, wherein: the outer ring surface of the linkage rod (152) is provided with a plurality of grooves which are annularly distributed along the circumferential direction of the linkage rod.
7. The system for testing the performance of the copper-core low-voltage cable after manufacturing and processing according to claim 1, wherein: the inner ring surface of the ring sleeve circular frame (154) is arranged in a conical shape.
8. The system for testing the performance of the copper-core low-voltage cable after manufacturing and processing according to claim 1, wherein: teeth are uniformly arranged on the clamping end face of the clamping plate (161).
9. The system for testing the performance of the copper-core low-voltage cable after manufacturing and processing according to claim 1, wherein: the performance testing system for the manufactured and processed copper-core low-voltage cable is used for testing the mechanical performance of the cable, and the specific testing method comprises the following steps:
s1, clamping and fixing the cable: clamping and fixing the shaft heads at two ends of the cable through a clamping unit (16), and then carrying out classification test according to mechanical properties;
s2, tensile force performance test: the first screw rod (12) is rotated through the rocking wheel (13), the H-shaped support (10) is enabled to translate outwards, so that the cable is pulled, the cable is tensioned and straightened, the tensile strength and the elongation rate are determined according to the first scale mark (11), and the tensile performance of the cable is known;
s3, torsion performance test: the joint control mechanism (3) drives the transferring unit (15) to rotate, so that shaft heads at two ends of the cable rotate in opposite directions, plastic deformation of the cable under torsion is detected, and the torsion performance of the cable is determined;
s4, bending performance test: the cable is repeatedly bent through the single detection mechanism (2), whether cracks appear on the surface of the cable in the bending process is detected, and the bending resistance of the cable is determined.
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| CN113701974B (en) * | 2021-09-13 | 2023-10-03 | 安徽中邦特种电缆科技有限公司 | Cable assembly vibration test device |
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| CN116593328B (en) * | 2023-07-14 | 2023-10-13 | 天津市小猫线缆股份有限公司 | Performance test system for copper core low-voltage cable after manufacturing and processing |
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