CN212844717U

CN212844717U - A power cord tensile test device

Info

Publication number: CN212844717U
Application number: CN202023302592.2U
Authority: CN
Inventors: 秦玉东
Original assignee: Shandong Institute for Product Quality Inspection
Current assignee: Shandong Institute for Product Quality Inspection
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-03-30
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a power cord tensile test device. The end of the output shaft of the servo motor of the utility model is connected with a lead screw I, the output shaft of the servo motor is also fixedly connected with a gear I, the gear I is meshed with the gear II, the gear II is fixedly connected with the lead screw II, the lead screw I, the lead screw II The free ends of the nut go through the side of the casing to connect the screw nut I and the screw nut II respectively. The external threads on the screw I and screw II have opposite directions of rotation. A connecting plate is connected between the screw nut I and the screw nut II. The tension sensor is fixedly connected, and the tension sensor is fixedly connected with a fixed block. The fixed block is fixedly connected to the fixed clamping plate through two connecting rods. The fixed clamping plate can be detachably connected to the movable clamping plate. The fixed clamping plate and the movable clamping plate are detachable. Connect the power cord used to clamp the stationary appliance. The present application does not require manual use of auxiliary tools to repeatedly apply a certain tensile force to the power cord, which effectively avoids the fatigue of the inspectors caused by the tensile force testing of a large number of power cords.

Description

Power line tension test device

Technical Field

The utility model relates to a power cord test equipment technical field, concretely relates to power cord tensile test device.

Background

At present, when carrying out the tensile test to the domestic appliance power cord, testing personnel all utilize appurtenance to the power cord that waits to detect and repeat a lot of and exert certain pulling force usually, then see the damage condition of power cord and take place the displacement condition, when the power cord not damaged, and the displacement of power cord when certain within range, think this power cord that has carried out the tensile test promptly is qualified. Because, this process is all that the people is gone on for utilizing appurtenance, consequently, when testing personnel need examine more power cord, the work load that the staff needs the manual work to go on can be bigger, and the staff work is got up comparatively tiredly. Therefore, the power line tension test device specially designed by our company does not need to manually apply certain tension to the power line repeatedly for many times by using an auxiliary tool.

SUMMERY OF THE UTILITY MODEL

In order to compensate for the deficiencies of the prior art, the utility model provides a power cord tensile test device.

The technical scheme of the utility model is that:

a power line tension test device comprises a casing, a servo motor and a storage battery are fixedly arranged in the casing, a lead screw I is fixedly connected to the tail end of an output shaft of the servo motor, a gear I is fixedly connected to the output shaft of the servo motor and meshed with a gear II, the gear II is fixedly connected with the lead screw II, the lead screw I and the lead screw II are fixed to the side face of the casing through bearings, the free ends of the lead screw I and the lead screw II respectively penetrate through a through hole formed in the side face of the casing and then are connected with a screw nut I and a screw nut II in a threaded mode, the screw nut I and the screw nut II are located outside the casing, the rotating directions of external threads on the lead screw I and the lead screw II are opposite, the screw nut I is matched with the lead screw I, the screw nut II is matched with the lead screw II, a connecting plate is fixedly connected between the screw nut I and the screw, the tension sensor is fixedly connected with a fixed block, the fixed block is fixedly connected with a fixed clamping plate through two connecting rods, the fixed clamping plate is detachably connected with a movable clamping plate through a bolt, and the fixed clamping plate and the movable clamping plate are detachably connected for clamping a power line of a fixed electric appliance; the lower end face of the shell is also fixedly connected with a horizontal plate, the lower end of the shell and the lower end of the horizontal plate are both fixedly connected with supporting legs, one end of the horizontal plate, far away from the shell, is fixedly provided with a vertical plate, the vertical plate is connected with a placing table in a sliding manner through two sliding devices, and the lower end of the placing table is connected with a height adjusting device; the outer side surface of the shell is also fixedly provided with a controller, a display screen and a starting switch, the controller is in bidirectional electric connection with the display screen, the starting switch and the tension sensor are in electric connection with the input end of the controller, and the servo motor is in electric connection with the output end of the controller; the storage battery is respectively connected with the servo motor, the controller, the display screen and the starting switch through leads. Before detection, a detector can set a tension value on a display screen according to the quality of a detected electric appliance and the detection requirements of GB 4706.1-2005/IEC 60355-1: 2004 (Ed4.1), and specifically comprises the following steps: when the mass of the electric appliance is less than or equal to 1, the pulling force value is set to be 30N, when the mass of the electric appliance is more than 1 and less than or equal to 4, the pulling force value is set to be 60N, and when the mass of the electric appliance is more than 4, the pulling force value is set to be 100N; then, the height adjusting device can be adjusted by the detection personnel to enable the electric appliance to be at a reasonable height, and the reasonable height requirement is as follows: one end of a power line for connecting an electric appliance and the position of the power line clamped by the fixed clamping plate and the movable clamping plate are at the same height, then a detection person places the electric appliance on the placing table, then the user clamps and fixes the power line between the fixed clamping plate and the movable clamping plate, then the detection person can press the starting switch, the controller can control the servo motor to start working after receiving a starting signal of the starting switch, an output shaft of the servo motor drives the screw rod I to rotate, meanwhile, the screw rod II is driven by the gear I and the gear II to rotate, the screw rod I and the screw rod II drive the screw rod I and the screw rod II to move leftwards simultaneously, under the driving of the fixed block and the connecting rod, the fixed clamping plate and the movable clamping plate pull the clamped power line leftwards, the tension sensor can transmit the detected tension value to the controller in real time, and when the controller detects that the tension value fed back by the tension sensor is a, the controller starts timing, after 1s, the controller controls the servo motor to work reversely, when the controller detects that the tension value fed back by the tension sensor is 0, the controller controls the servo motor to stop working, namely, one-time tension test work is completed, and then a worker only needs to press a starting switch, so that the application can complete the tension detection process of the power line of the electric appliance by repeating the tension test process for 24 times; in addition, because this application need not the manual work and utilizes appurtenance to power cord repeated application certain pulling force many times, consequently, this application has also effectively avoided the manual work to utilize appurtenance to power cord repeated application certain pulling force many times the artificial problem of applying the pulling force value size unstability that exists in-process, so, this application has also effectively improved measuring result's accuracy.

Preferably, the height adjusting device comprises an outer sleeve and an inner sleeve rod, the outer sleeve is fixedly connected with the lower end of the placing table, the outer sleeve is in threaded connection with the inner sleeve rod, the lower end of the inner sleeve rod penetrates through the horizontal plate and is fixedly connected with the handle, and the inner sleeve rod is fixed on the horizontal plate through a bearing. The adjustment of the height adjusting device in the application is very convenient, only a detecting person needs to rotate the handle by hand, and the inner loop bar is fixed on the horizontal plate through the bearing, so that the inner loop bar can only rotate, and the inner loop bar is in threaded connection with the outer sleeve, therefore, the inner loop bar rotates to inevitably lead to the upward or downward movement of the outer sleeve, and further the purpose of adjusting the placing table to move upward or downward is achieved.

Preferably, the placing table is further provided with a clamping device, the clamping device comprises an installation block, a bearing, an inner screw, an outer sleeve and a handle, the installation block is fixedly arranged at one end of the placing table far away from the vertical plate, the inner screw penetrates through a threaded hole in the installation block and is in threaded connection with the outer sleeve, the outer sleeve is fixedly connected with a baffle plate, the inner screw is fixed on the installation block through the bearing, and one end of the inner screw far away from the vertical plate is fixedly connected with the handle. This above-mentioned setting, the staff of being convenient for adjusts the screw rod through the handle and rotates, and then realizes adjusting the baffle and move left or right along the horizontal direction, and then realizes utilizing the upper portion of baffle and vertical board to carry out the centre gripping fixed to electrical apparatus, and this above-mentioned setting can effectively prevent that electrical apparatus from receiving pulling force left and taking place the problem of shifting in the testing process.

Preferably, one end of the baffle close to the vertical plate is fixedly connected with the non-slip mat.

Preferably, an arc-shaped groove is formed in the side face, opposite to the movable clamping plate, of the fixed clamping plate.

Preferably, the sliding device comprises a sliding block and a sliding rail, the sliding block is fixedly arranged on the placing table, the sliding rail is fixedly arranged in a groove formed in the vertical plate, and the sliding block is connected with the sliding rail in a sliding mode.

Compared with the prior art, the beneficial effects of the utility model are as follows:

this application need not the manual work and utilizes appurtenance to the power cord certain pulling force of repeated application many times, has effectively alleviated the tired sense that the measurement personnel carried out pulling force detection to a large amount of power cords and caused.

Drawings

FIG. 1 is a schematic structural view in elevation section of the present application;

FIG. 2 is a right side view of the connection between the fixed clamping plate and the movable clamping plate.

In the figure, 1 machine shell, 2 servo motors, 3 lead screw I, 4 gear I, 5 gear II, 6 lead screw II, 7 screw I, 8 screw II, 9 connecting plates, 10 tension sensors, 11 fixed blocks, 12 connecting rods, 13 fixed clamping plates, 14 movable clamping plates, 15 arc-shaped grooves, 16 electric appliances, 17 power lines, 18 horizontal plates, 19 supporting legs, 20 vertical plates, 21 placing tables, 22 controllers, 23 display screens, 24 starting switches, 25 sliding blocks, 26 sliding rails, 27 outer sleeves, 28 inner sleeve rods, 29 handles, 30 mounting blocks, 31 bearings, 32 inner screw rods, 33 outer sleeves, 34 baffle plates, 35 anti-skidding pads and 36 storage batteries.

Detailed Description

As shown in figures 1 and 2, a power cord tension test device comprises a machine shell 1, a servo motor 2 and a storage battery 36 are fixedly arranged in the machine shell 1, the tail end of an output shaft of the servo motor 2 is fixedly connected with a lead screw I3, a gear I4 is also fixedly connected to the output shaft of the servo motor 2, the gear I4 is meshed with a gear II 5, the gear II 5 is fixedly connected with a lead screw II 6, the lead screw I3 and the lead screw II 6 are fixed on the side surface of the machine shell 1 through bearings, the free ends of the lead screw I3 and the lead screw II 6 respectively penetrate through a through hole formed in the side surface of the machine shell 1 rightwards and then are in threaded connection with a screw I7 and a screw II 8, the screw I7 and the screw II 8 are located outside the machine shell 1, the external threads on the lead screw I3 and the lead screw II 6 are opposite in rotating directions, the screw I7 is matched with the lead screw I3, the screw II 8 is matched with the lead, the connecting plate 9 is fixedly connected with a tension sensor 10, the tension sensor 10 is fixedly connected with a fixed block 11, the fixed block 11 is fixedly connected with a fixed clamping plate 13 through two connecting rods 12, the fixed clamping plate 13 is detachably connected with a movable clamping plate 14 through bolts, an arc-shaped groove 15 is formed in the side surface of the fixed clamping plate 13 opposite to the movable clamping plate 14, and the fixed clamping plate 13 and the movable clamping plate 14 are detachably connected with a power line 17 for fixing an electric appliance 16; the lower end face of the machine shell 1 is also fixedly connected with a horizontal plate 18, the lower end of the machine shell 1 and the lower end of the horizontal plate 18 are both fixedly connected with supporting legs 19, one end of the horizontal plate 18, which is far away from the machine shell 1, is fixedly provided with a vertical plate 20, the vertical plate 20 is connected with a placing table 21 in a sliding manner through two sliding devices, and the lower end of the placing table 21 is connected with a height adjusting device; a controller 22, a display screen 23 and a starting switch 24 are further fixedly arranged on the outer side surface of the machine shell 1, the controller 22 is electrically connected with the display screen 23 in a bidirectional mode, the starting switch 24 and the tension sensor 10 are electrically connected with the input end of the controller 22, and the servo motor 2 is electrically connected with the output end of the controller 22; the storage battery 36 is respectively connected with the servo motor 2, the controller 22, the display screen 23 and the starting switch 24 through leads, and provides electric energy for the servo motor 2, the controller 22, the display screen 23 and the starting switch 24.

The sliding device comprises a sliding block 25 and a sliding rail 26, wherein the sliding block 25 is fixedly arranged on the placing table 21, the sliding rail 26 is fixedly arranged in a groove formed in the vertical plate 20, and the sliding block 25 is connected with the sliding rail 26 in a sliding manner; the height adjusting device comprises an outer sleeve 27 and an inner sleeve rod 28, wherein the outer sleeve 27 is fixedly connected with the lower end of the placing table 21, the outer sleeve 27 is in threaded connection with the inner sleeve rod 28, the lower end of the inner sleeve rod 28 penetrates through the horizontal plate 18 and is fixedly connected with a handle 29, and the inner sleeve rod 28 is fixed on the horizontal plate 18 through a bearing 31.

In addition, the placing table 21 is further provided with a clamping device, the clamping device comprises an installation block 30, a bearing 31, an inner screw 32, an outer sleeve 33 and a handle 29, the installation block 30 is fixedly arranged at one end, far away from the vertical plate 20, of the placing table 21, the inner screw 32 penetrates through a threaded hole, threaded connection is formed in the installation block 30, the outer sleeve 33 is connected with a baffle 34 in a fixed mode, one end, close to the vertical plate 20, of the baffle 34 is fixedly connected with an anti-slip pad 35, the inner screw 32 is fixed on the installation block 30 through the bearing 31, and one end, far away from the vertical plate 20, of the inner screw 32 is fixedly connected with.

Before detection, a detector can set a tension value on a display screen according to the quality of a detected electric appliance and the detection requirements of GB 4706.1-2005/IEC 60355-1: 2004 (Ed4.1), and specifically comprises the following steps: when the mass of the electric appliance is less than or equal to 1, the pulling force value is set to be 30N, when the mass of the electric appliance is more than 1 and less than or equal to 4, the pulling force value is set to be 60N, and when the mass of the electric appliance is more than 4, the pulling force value is set to be 100N; then, the height adjusting device can be adjusted by the detection personnel to enable the electric appliance to be at a reasonable height, and the reasonable height requirement is as follows: one end of a power line for connecting an electric appliance and the position of the power line clamped by the fixed clamping plate and the movable clamping plate are at the same height, then a detection person places the electric appliance on the placing table, then the user clamps and fixes the power line between the fixed clamping plate and the movable clamping plate, then the detection person can press the starting switch, the controller can control the servo motor to start working after receiving a starting signal of the starting switch, an output shaft of the servo motor drives the screw rod I to rotate, meanwhile, the screw rod II is driven by the gear I and the gear II to rotate, the screw rod I and the screw rod II drive the screw rod I and the screw rod II to move leftwards simultaneously, under the driving of the fixed block and the connecting rod, the fixed clamping plate and the movable clamping plate pull the clamped power line leftwards, the tension sensor can transmit the detected tension value to the controller in real time, and when the controller detects that the tension value fed back by the tension sensor is a, the controller begins the timing, and 1s back, controller control servo motor reverse work, when the controller detects the pulling force value of force sensor feedback and is 0, controller control servo motor stop work, accomplishes a pulling force test work promptly, and then the staff only need press the starting switch, makes this application repeat above-mentioned pulling force test process 24 times again and can accomplish and carry out the pulling force detection process to the power cord of electrical apparatus.

Claims

1. A power cord tensile test device, comprising a casing, is characterized in that: a servomotor and a battery are fixedly arranged in the casing, the output shaft end of the servomotor is fixedly connected with a lead screw I, and the servomotor is The output shaft is also fixedly connected with a gear I, the gear I meshes with the gear II, the gear II is fixedly connected with the lead screw II, and the lead screw I and the lead screw II are fixed on the side of the casing through bearings, so the The free ends of the lead screw I and the lead screw II respectively pass through the through holes opened on the side of the casing to connect the screw nut I and the screw nut II, and the screw nut I and the screw nut II are located outside the casing. The external threads on the screw I and the screw II have opposite directions of rotation, a connecting plate is fixedly connected between the screw nut I and the screw nut II, the connecting plate is fixedly connected with a tension sensor, and the tension sensor is fixedly connected with a fixing block , the fixed block is fixedly connected to the fixed clamping plate through two connecting rods, the fixed clamping plate is detachably connected to the movable clamping plate, and the fixed clamping plate and the movable clamping plate are detachably connected for clamping and fixing The power cord of the electrical appliance; the lower end surface of the casing is also fixedly connected with a horizontal plate, the lower end of the casing and the lower end of the horizontal plate are fixedly connected with supporting legs, and the end of the horizontal plate away from the casing is fixed with a vertical A straight plate, the vertical plate is slidably connected to a placing table through two sliding devices, and a height adjusting device is connected to the lower end of the placing table; The controller is electrically connected to the display screen in both directions, the start switch and the tension sensor are electrically connected to the input end of the controller, the servo motor is electrically connected to the output end of the controller; the battery is electrically connected to the servo motor through wires Motor, controller, display, start switch connection.

2 . The power cord tensile test device according to claim 1 , wherein the height adjustment device comprises an outer sleeve and an inner sleeve rod, the outer sleeve is fixedly connected to the lower end of the placing table, and the outer sleeve is fixedly connected. 3 . The barrel is threadedly connected to the inner sleeve rod, the lower end of the inner sleeve rod is fixed and connected to the handle through the horizontal plate, and the inner sleeve rod is fixed on the horizontal plate through the bearing.

3 . The power cord tensile test device according to claim 1 , wherein a clamping device is further provided on the placing table, and the clamping device comprises a mounting block, a bearing, an inner screw, an outer sleeve and a handle, 3 . The mounting block is fixedly arranged at one end of the placing platform away from the vertical plate, the inner screw thread is connected to the outer casing through the threaded hole provided on the mounting block, the outer casing is fixedly connected to the abutment plate, and the inner screw passes through the bearing being fixed on the mounting block, the end of the inner screw rod away from the vertical plate is fixedly connected to the handle.

4 . The power cord tensile test device according to claim 3 , wherein the end of the abutting plate close to the vertical plate is fixedly connected to the anti-skid pad. 5 .

5 . The power cord tensile test device according to claim 1 , wherein arc grooves are formed on the opposite sides of the fixed clamping plate and the movable clamping plate. 6 .

6 . The power cord tensile test device according to claim 1 , wherein the sliding device comprises a sliding block and a sliding rail, the sliding block is fixedly arranged on the placing table, and the sliding rail is fixedly arranged vertically. 7 . The sliding block is slidably connected with the sliding rail in the groove opened by the plate.