CN217765833U

CN217765833U - Power line tension and torsion testing machine

Info

Publication number: CN217765833U
Application number: CN202221614835.2U
Authority: CN
Inventors: 郭艳萍; 李鑫; 乐洋铄; 陈敏; 徐浩; 蔡鑫; 黄耀华; 夏帆; 李彦军; 随青松; 黄莹; 徐海忠
Original assignee: Jiangsu Supervision and Inspection Institute for Product Quality
Current assignee: Jiangsu Supervision and Inspection Institute for Product Quality
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2022-11-08
Anticipated expiration: 2032-06-27

Abstract

The utility model provides a power line tension and torsion testing machine for carrying out power line tension and torsion tests on large household and commercial electric appliances, which comprises a moving device, an electric cabinet and a tension and torsion testing device, wherein the moving device enables the tension and torsion testing device to vertically move up and down, and the electric cabinet is electrically connected with the tension and torsion testing device; the utility model discloses be equipped with the counter weight, operation labour saving and time saving, simple structure, it is convenient.

Description

Power line tension and torsion testing machine

Technical Field

The utility model relates to a domestic and similar usage electrical apparatus test field especially relates to a power cord tensile force torsion testing machine.

Background

According to the electrical safety standard requirements of IEC60335-1, GB4706.1, EC60598-1/GB7000.1, GB3883.1 and the like, a power cord fixing device of a large-scale electrical product needs to be tested under specified tension and torsion, but is limited by the particularity of the volume and the structural characteristics of the large-scale electrical product.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a power cord tensile force torsion test machine solves and does not bear regulation pulling force and the experimental device equipment problem of torsion to the power patchcord fixing device of large-scale electrical product.

In order to realize the purpose, the utility model provides a technical scheme is: the utility model provides a power cord tensile force torsion testing machine carries out power cord pulling force and torsion test to large-scale domestic and commercial electrical apparatus, includes mobile device, electric cabinet and tensile force torsion testing arrangement, and mobile device makes tensile force torsion testing arrangement reciprocate perpendicularly, and the electric cabinet is connected with tensile force torsion testing arrangement electricity.

The mobile device includes the pole setting, the stand, the bottom plate, the yoke plate, a plurality of switching-over wheels, the armful ring, a plurality of linear bearing, the mounting panel, the lifter plate, wire rope and counter weight, the one end of stand and pole setting is connected perpendicularly respectively in the bottom plate, the other end is connected with the yoke plate respectively, yoke plate upper portion is provided with a plurality of switching-over wheels, the pole setting suit is provided with armful ring and a plurality of linear bearing, the mounting panel respectively with linear bearing, the armful fixed connection, the lifter plate sets up between stand and pole setting, the one end and the mounting panel fixed connection of lifter plate, the other end is through the guide pulley and the stand sliding positioning who sets up, the counter weight is connected to wire rope's one end, the other end passes through the through-hole connection lifter plate that sets up on switching-over wheel and the yoke plate.

The tension and torsion testing device is arranged on the lifting plate and comprises a speed reducing motor, a cam, a rolling bearing, a guide wheel A, a guide wheel B, a guide wheel C, a rotary fixture, a linear guide rail sliding block, a bolt, a steel wire, a tension weight and a torsion weight, wherein a guide rail of the linear guide rail sliding block is horizontally arranged on the lifting plate, the guide wheel C, the rotary fixture and the rolling bearing are arranged on the sliding block, the guide wheel A and the guide wheel B are arranged on the lifting plate at one end of the guide rail, the speed reducing motor is arranged on the lifting plate at one side of the rolling bearing of the guide rail, a motor shaft of the speed reducing motor is provided with the cam, the motor shaft is axially parallel to the rolling bearing, a radial connecting line is parallel to the guide rail, adaptive bolt holes are respectively arranged on the lifting plate and the sliding block at one side of the guide wheel C of the guide rail, the bolt is inserted into the bolt holes to mutually fix the sliding block and the lifting plate, a shaft through hole is radially arranged on a rotating shaft of the rotary fixture, and two clamp knobs are axially symmetrically arranged along the rotating shaft; the guide wheel B is superposed with a tangent line of a thread tightening knob; the tangent line coincidence of leading wheel A and leading wheel C, the one end and the through-axis hole of steel wire are connected, and the other end loops through behind leading wheel C and the leading wheel A connection torsion weight.

The electric cabinet is connected with the electric signal of the speed reducing motor and comprises a power switch, a timer and a counter.

The mounting panel is connected fixedly through the bracing piece of installing on the mounting panel with the lifter plate, and wire rope passes through the hangers bolt that sets up on the lifter plate and is connected with the lifter plate.

The upright post is also provided with a counterweight cover vertical to the bottom plate.

The lower part of the bottom plate is provided with a caster wheel and a foot cup.

The utility model adopts the manual hydraulic platform to adjust the sample to the proper height for the large-scale sample to be tested, the tension and torsion testing device is adapted to the height of the sample through the moving device, the power cord is fixed on the rotary fixture for the tension and torsion test during the tension test, and the rolling bearing is supported and put down through the tension weight, the guide wheel B and the cam, so that the sample can periodically bear the specified tension and the duration; during the torsion test, the power cord is fixed on the rotary fixture for the tension torsion test, and the power cord of the tested sample bears the specified torque through the self gravity of the torsion weight and the rotation action of the guide wheel A, the guide wheel C and the rotary shaft of the rotary fixture.

The utility model discloses a look examine, whether it is qualified according to the safety standard requirement is confirmed in manual test.

The beneficial effects of the utility model are that be equipped with the counter weight, operation labour saving and time saving, simple structure, it is convenient.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic diagram of the mobile device of the present invention;

FIG. 3 is a schematic structural view of the tension and torsion testing apparatus of the present invention;

fig. 4 is a schematic view of the position structure of the guide wheel C of the present invention;

fig. 5 is a schematic view of a linear bearing and a hoop structure according to an embodiment of the present invention;

FIG. 6 is a cross-sectional view of the radial structure of the ring of the present invention;

wherein: 1-vertical rod, 2-vertical column, 3-yoke plate, 4-reversing wheel, 5-electric cabinet, 6-counterweight, 7-counterweight cover, 8-bottom plate, 10-steel wire rope, 11-linear bearing, 12-embracing ring, 13-guide wheel A, 14-guide wheel B, 15-guide wheel C, 16-speed reducing motor, 17-cam, 18-linear guide rail slide block, 19-rolling bearing, 20-mounting plate, 21-supporting rod, 22-wire clamp knob, 23-tension weight, 24-torsion weight, 25-bolt, 26-rotary fixture, 27-guide wheel and 28-embracing ring bolt.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings:

embodiment for example as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, the power cord tension and torsion testing machine of the present embodiment performs power cord tension and torsion tests on large household and commercial electric appliances, and includes a moving device, an electric cabinet and a tension and torsion testing device, wherein the moving device enables the tension and torsion testing device to vertically move up and down, the electric cabinet 5 is electrically connected with the tension and torsion testing device, the electric cabinet 5 is electrically connected with a speed reduction motor 16, and the electric cabinet 5 includes a power switch, a timer and a counter.

The embodiment is characterized in that the moving device comprises a vertical rod 1, a vertical column 2, a bottom plate 8, a yoke plate 3, two reversing wheels 4, a hoop 12, two linear bearings 11, a mounting plate 20, a lifting plate, a steel wire rope 10 and a counterweight 6, wherein one ends of the vertical column 2 and the vertical rod 1 are respectively and vertically connected and fixed on the bottom plate 8, the other ends of the vertical column 2 and the vertical rod 1 are respectively and fixedly connected with the yoke plate 3, the upper part of the yoke plate is provided with the two reversing wheels 4, the vertical rod 1 is sleeved with the hoop 12 and the two linear bearings 11, the hoop 12 is arranged between the linear bearings 11, the mounting plate is respectively and fixedly connected with the two linear bearings 11 and the hoop 12, the lifting plate is arranged between the vertical column 2 and the vertical rod 1, one end of the lifting plate is fixedly connected with the mounting plate 20 through a support rod 21, the other end of the lifting plate is slidably positioned with the vertical column 2 through two guide wheels 27, one end of the steel wire rope 10 is connected with the counterweight 6, the other end of the lifting plate is connected with a lug bolt arranged on the lifting plate through two reversing wheels 4 and two through holes arranged on the yoke plate 3, the lifting plate is further provided with a weight cover 7 vertical to the bottom plate, and the lower part of the bottom plate 8 is provided with a counterweight and a foot cup.

The moving mechanism mainly comprises a 60-3 square through upright post 2, a 60-3 circular tube upright post 1, two guide wheels 27 tightly pressed on two sides of the upright post 2, and two linear bearings 11 precisely arranged on the upright post 1, so that the shaft moving device can smoothly move up and down along an upright post shaft in a straight line. Through the combined action of the guide wheel 27 and the linear bearings 11, the moving device can not move or swing back and forth, an open hoop 12 is arranged between the two linear bearings 11, and the moving device is fixed on the vertical rod shaft and the vertical column as long as a hoop bolt 28 on the hoop 12 is locked.

The tension and torsion testing device is arranged on a lifting plate and comprises a speed reducing motor 16, a cam 17, a rolling bearing 19, a guide wheel A13, a guide wheel B14, a guide wheel C15, a rotary fixture 26, a linear guide rail slider 18, a bolt 25, a steel wire, a tension weight 23 and a torsion weight 24, wherein a guide rail of the linear guide rail slider 18 is horizontally installed and fixed on the lifting plate, the slider is provided with the guide wheel C15, the rotary fixture 26 and the rolling bearing 19, the lifting plate at one end of the guide rail is provided with the guide wheel A13 and the guide wheel B14, the lifting plate at one side of the rolling bearing of the guide rail is provided with the speed reducing motor 16, the speed reducing motor 16 reduces the speed of the motor and measures the rotation angle through the speed reducing gear, the output shaft of the speed reducing motor is provided with the cam 17, the axial direction connecting lines of the output shaft and the rolling bearing are parallel to the guide rail, the axial direction connecting line of the lifting plate and the sliding block at one side of the guide rail C15 of the guide rail are respectively provided with adaptive bolt holes, the bolt 25 is inserted into the bolt hole, so that the sliding plate and the sliding plate can fix and the sliding block and fix the sliding plate to each other, the rotating clamp 26, the rotating shaft, the rotating clamp is provided with a through hole, and two wire clamps 22 are symmetrically arranged along the axial direction of the rotating shaft; the guide wheel B14 is superposed with the tangent line of a thread tightening knob 22; the tangent line of leading wheel A14 and leading wheel C15 coincides, and one end and the axle through-hole of steel wire are connected, and the other end loops through leading wheel C15 and leading wheel A13 back connection torsion weight 24.

The embodiment is suitable for the test requirements of IEC60335-1/GB4706.1 standard on household appliances, and is also suitable for the requirements of electrical safety standards such as EC60598-1/GB7000.1, GB3883.1 and the like. The design test is carried out on the requirement that the power cord fixing device of a large-scale electric appliance product is subjected to a specified tension and torsion test, and when the cord is subjected to the tension shown in the table, a mark is made at a position about 20 mm away from the cord fixing device or other proper positions. Then, the predetermined pulling force was applied in the worst direction for 25 times, and the duration of each pulling force was 1 second without applying the explosive force.

For a cord of a non-automatic reel, a torque should be applied immediately as close to the appliance as possible. The torque is a specified value shown in the table. The torque was applied for 1 min.

Mass of the device/kg	tension/N	torque/Nm
			≤1	30	0.1
Greater than 1 and less than or equal to 4	60	0.25
			＞4	100	0.35

During this test, the cord should not be damaged and there should not be significant tension at the individual terminals. The longitudinal displacement of the cord should not exceed 2 mm when the pulling force is applied again. The specific implementation mode is as follows:

and (3) testing tension: 1. the lifter plate is adjusted to be in accordance with the height of the sample power line, and the embracing bolt 28 is screwed tightly.

2. The sample power cord is clamped with the clamp knob 22 of the rotary clamp 26.

3. And (4) hanging a tension weight 23 connected with a sample power line on the guide wheel B14, and starting the speed reducing motor 16 to start testing.

And (3) torsion testing: 1. the lifter plate is adjusted to be in accordance with the height of the sample power line, and the embracing bolt 28 is screwed tightly.

2. The steel wire rope is rotated for two circles on the rotating shaft.

3. The sample power cord is clamped with the clamp knob 22 of the rotary clamp 26.

4. The test was started by hanging a torsion weight 24 from the wire rope via the guide wheel C15 and the guide wheel a 13.

The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.

Claims

1. The utility model provides a power cord tensile force torsion test machine carries out power cord tensile force and torsion test, its characterized in that to large-scale domestic and commercial electrical apparatus: the tension and torsion testing device comprises a moving device, an electric cabinet and a tension and torsion testing device, wherein the moving device enables the tension and torsion testing device to vertically move up and down, and the electric cabinet is electrically connected with the tension and torsion testing device;

the moving device comprises a vertical rod, a vertical column, a bottom plate, a yoke plate, a plurality of reversing wheels, a hoop, a plurality of linear bearings, a mounting plate, a lifting plate, a steel wire rope and a counterweight, one end of the vertical rod and one end of the vertical rod are respectively and vertically connected to the bottom plate, the other end of the vertical rod is respectively connected with the yoke plate, the upper part of the yoke plate is provided with the plurality of reversing wheels, the vertical rod is sleeved with the hoop and the plurality of linear bearings, the mounting plate is respectively and fixedly connected with the linear bearings and the hoop, the lifting plate is arranged between the vertical rod and the vertical rod, one end of the lifting plate is fixedly connected with the mounting plate, the other end of the lifting plate is positioned with the vertical rod in a sliding mode through a guide wheel, one end of the steel wire rope is connected with the counterweight, and the other end of the steel wire rope is connected with the lifting plate through holes formed in the reversing wheels and the yoke plate;

the tension and torsion testing device is arranged on a lifting plate and comprises a speed reducing motor, a cam, a rolling bearing, a guide wheel A, a guide wheel B, a guide wheel C, a rotary fixture, a linear guide rail sliding block, a bolt, a steel wire, a tension weight and a torsion weight, wherein a guide rail of the linear guide rail sliding block is horizontally arranged on the lifting plate; the guide wheel B is superposed with a tangent line of a thread tightening knob; the tangent line of the guide wheel A is superposed with the tangent line of the guide wheel C, one end of the steel wire is connected with the shaft through hole, and the other end of the steel wire is connected with the torsion weight after passing through the guide wheel C and the guide wheel A in sequence;

2. The power cord tension and torsion testing machine according to claim 1, wherein: the mounting panel is connected fixedly through the bracing piece of installing on the mounting panel with the lifter plate, and wire rope passes through the hangers bolt that sets up on the lifter plate and is connected with the lifter plate.

3. The power cord tension and torsion testing machine according to claim 1, wherein: the upright post is also provided with a counterweight cover vertical to the bottom plate.

4. The power cord tension and torsion testing machine according to claim 1, wherein: the lower part of the bottom plate is provided with a caster wheel and a foot cup.