Performance detection equipment for internal connecting wire of electric appliance

Abstract

The invention belongs to the technical field of electric appliance internal connecting line detection, and particularly relates to electric appliance internal connecting line performance detection equipment which comprises a bottom plate, a Y-shaped support and the like. And the bottom plate is connected with a Y-shaped bracket. According to the invention, the limiting disc rotates to drive the three wire cores to rotate, so that the connecting wire is twisted, then the connecting wire is detected through the visual sensor, and whether the marking line on the outer surface of the connecting wire and the marking line on one of the wire cores are staggered or not is detected; if the marking line on the outer surface of the connecting line and the marking line on one of the wire cores are staggered, the relative sliding phenomenon occurs among the coating layers of the connecting line, the tightness among the coating layers of the connecting line is not enough, meanwhile, the state of the connecting line after the torsion test is recorded and compared with the standard state, and the state of the connecting line after the torsion test is determined. And then whether the connecting wire can be normally electrified after being twisted is detected, so that the durability, the reliability and the structural integrity of the connecting wire are detected.

Description

Technical Field

[0001] The invention belongs to the technical field of internal connection wire detection of electrical appliances, and particularly relates to a performance detection device for internal connection wires of electrical appliances. Background Art

[0002] As an important carrier for signal communication and electric energy transmission, under some usage conditions, wires are required to have a certain degree of durability, reliability and structural integrity to ensure their own integrity and communication ability. However, based on the prior art, it is found that since the existing wire harness is covered with multiple layers of rubber protective layers, when the wire harness is used and connected to another cable or connector, the rubber layer at the end of the wire harness usually needs to be stripped, and the wire core of the wire harness needs to be twisted according to the actual usage situation to achieve the connection. However, when the existing metal wire twisting test equipment tests the wire harness, it usually twists the whole wire harness to evaluate the durability, reliability and structural integrity of the wire harness under repeated twisting or rotational stress, and it is impossible to directly obtain the performance of the wire core in the wire harness after twisting, and the tightness between the rubber protective layers in the wire harness after the wire harness is twisted, resulting in great limitations of the existing test equipment. Summary of the Invention

[0003] In order to overcome the defect that the existing equipment cannot directly obtain the performance of the wire core in the wire harness after twisting when detecting the wire harness, the invention provides a performance detection device for internal connection wires of electrical appliances.

[0004] The technical solution is as follows: A performance detection device for internal connection wires of electrical appliances includes a bottom plate; it also includes a Y-shaped bracket, a fixed ring, a circular ring, a limit disk, a driving component, a DD motor, a disk, a pressing block, a fixing component, a mounting frame and a vision sensor; the Y-shaped bracket is connected to the bottom plate; the fixed ring is connected to the bottom plate; the circular ring is rotatably connected to the fixed ring; a limit disk is fixedly connected to the circular ring, and a plurality of through inclined holes are opened on the limit disk, and the through inclined holes are used for passing through the circular ring; a driving component is connected to the circular ring, and the driving component is used to drive the limit disk to rotate; the DD motor is connected to the limit disk; the output shaft of the DD motor is fixedly connected to the disk; at least two pressing blocks are fixedly connected to the disk, and an inclined slot is opened on each pressing block, and the inclined slot is used to cooperate with the limit disk to jointly clamp and limit the wire core in the connection wire; the fixing component is connected to the bottom plate, and the fixing component is used to fix one end of the connection wire; the mounting frame is fixedly connected to the bottom plate; at least two vision sensors are installed on the mounting frame.

[0005] Further, the fixing component includes a guide rail, a sliding block, a chuck, a support frame, an electric actuator, a connecting ring, a pin rod, a support and a rope; the right part of the upper surface of the bottom plate is fixedly connected with the guide rail; the sliding block is slidably connected to the guide rail; the chuck is rotatably connected to the sliding block; at least two support frames are fixedly connected to the upper surface of the bottom plate; an electric actuator is fixedly connected to each support frame; the telescopic parts of all the electric actuators are jointly fixedly connected with a connecting ring; several pin rods are fixedly connected to one side of the connecting ring close to the chuck, and several circular holes matching with the pin rods are formed in one side of the chuck close to the connecting ring; the right part of the upper surface of the bottom plate is fixedly connected with a support, and a pulley is installed on the upper part of the support; the rope is fixedly connected to the right side of the sliding block; the rope is in contact with the pulley.

[0006] Further, it also includes a clamping block; several clamping blocks are fixedly connected to the upper part of the Y-shaped bracket.

[0007] Further, a rubber layer is coated on the outer side of the clamping block.

[0008] Further, it also includes a guiding block; the guiding block is fixedly connected to the right side of the limiting disc.

[0009] Further, the side of the guiding block close to the clamping block is set to be a smooth elliptical shape.

[0010] Further, it also includes a performance detection system; the performance detection system is connected to the bottom plate; the performance detection system includes a box body, a chassis, an electric slide rail, an electric slider, a connecting rod and an arc-shaped electric heating plate; at least two box bodies are slidably connected to the middle of the bottom plate, and notches for the movement of the connecting wire are formed in the middle of all the box bodies; at least two chassis are fixedly connected to the middle of the bottom plate; an electric slide rail is fixedly connected to each chassis; at least two electric sliders are slidably connected to each electric slide rail; each box body is fixedly connected to the corresponding electric slider; at least two connecting rods are fixedly connected to the inner wall of each box body; all the connecting rods on the same box body are jointly fixedly connected with an arc-shaped electric heating plate.

[0011] Further, a heat preservation layer is arranged on the inner side of the box body.

[0012] Further, it also includes rubber sheets; at least two semi-circular rubber sheets are arranged in the notches in the middle of each box body.

[0013] Further, it also includes a tensiometer and an elastic part; the tensiometer is detachably connected to the guide rail; the tensiometer is detachably connected to the sliding block; the elastic part is detachably connected to the guide rail; the elastic part is detachably connected to the sliding block.

[0014] The advantages and positive effects of the present invention are: (1) By rotating the three pressing blocks to squeeze the ends of each pair of one wire core, the ends of the three wire cores are made to closely adhere to the left side of the limiting plate. Then, through the cooperation of the three pressing blocks and the limiting plate, the ends of the three wire cores are clamped and limited. Next, the other end of the connecting wire is clamped and limited by the chuck, and weights of the required weight are hung on the rope, so that the whole connecting wire is in a straightened state.

[0015] (2) By rotating the limiting plate to drive the three wire cores to rotate, the connecting wire is twisted. Then, a visual sensor on the mounting bracket is used to detect the connecting wire, and it is detected whether the marking line on the outer surface of the connecting wire is misaligned with the marking line on one of the wire cores. If the marking line on the outer surface of the connecting wire is misaligned with the marking line on one of the wire cores, it indicates that relative sliding has occurred between the coating layers of the connecting wire, which means that the coating layers of the connecting wire are not tight enough. At the same time, the state of the connecting wire after the torsion test is recorded and compared with the standard state, so as to determine whether the connecting wire meets the production standard. Then, it is detected whether the connecting wire can be normally energized after being twisted, so as to detect the durability, reliability and structural integrity of the connecting wire.

[0016] (3) By energizing and operating the two arc-shaped electric heating plates, the connecting wire is heated, thus simulating the phenomenon that the temperature of the connecting wire rises due to the increase in the temperature inside the electrical appliance after the electrical appliance operates for a long time. Then, the connecting wire is subjected to torsion detection, and the state of the connecting wire is recorded by the visual sensor, so as to know the performance of the connecting wire in the high-temperature state, thereby improving the diversity and accuracy of the detection.

[0017] (4) By moving all the pin rods to drive the sliding block to move to the right along the guide rail, the movement of the sliding block drives the chuck to move, and then the other end of the connecting wire is pulled. When the value on the tensiometer reaches the preset value, the two electric actuators are controlled to stop operating. Then, the overall state of the connecting wire is recorded by the visual sensor installed on the mounting bracket, so as to detect the change in the ductility of the connecting wire. Description of the Drawings

[0018] Figure 1 Schematic diagram of the first perspective three-dimensional structure of the performance detection device for the internal connecting wire of the electrical appliance of the present invention; Figure 2 Schematic diagram of the second perspective three-dimensional structure of the performance detection device for the internal connecting wire of the electrical appliance of the present invention; Figure 3 Schematic diagram of the three-dimensional structure of the drive assembly of the performance detection device for the internal connecting wire of the electrical appliance of the present invention; Figure 4 Schematic diagram of the installation positions of the DD motor, the disc and the pressing block of the performance detection device for the internal connecting wire of the electrical appliance of the present invention; Figure 5Explosion schematic diagram of the Y-shaped bracket, clamping block, circular ring, limit disc, guide block, DD motor, disc and pressing block of the performance detection device for the internal connecting wire of the electrical appliance of the present invention; Figure 6 Schematic three-dimensional structure diagram of the fixing component of the performance detection device for the internal connecting wire of the electrical appliance of the present invention; Figure 7 Schematic three-dimensional structure diagram of the performance detection system of the performance detection device for the internal connecting wire of the electrical appliance of the present invention; Figure 8 Schematic diagram of the installation positions of the tensiometer and the elastic member of the performance detection device for the internal connecting wire of the electrical appliance of the present invention.

[0019] Names and serial numbers of the components in the figure: 1 - bottom plate, 2 - connecting wire, 201 - Y-shaped bracket, 2011 - clamping block, 202 - fixing ring, 203 - circular ring, 204 - limit disc, 2041 - guide block, 205 - straight-tooth ring, 206 - motor, 207 - spur gear, 208 - DD motor, 209 - disc, 210 - pressing block, 211 - guide rail, 212 - sliding block, 213 - chuck, 214 - support frame, 215 - electric actuator, 216 - connecting ring, 217 - pin rod, 218 - support, 219 - rope, 301 - mounting bracket, 302 - vision sensor, 303 - box body, 3031 - rubber sheet, 304 - chassis, 305 - electric slide rail, 3051 - electric slider, 306 - connecting rod, 307 - arc-shaped electric heating plate, 401 - tensiometer, 402 - elastic member. Detailed implementation manners

[0020] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0021] Example 1: A performance detection device for the internal connecting wire of an electrical appliance, according to Figures 1-6 shown, includes a bottom plate 1; It further includes a Y-shaped bracket 201, a fixing ring 202, a circular ring 203, a limiting disk 204, a driving assembly, a DD motor 208, a disk 209, a pressing block 210, a fixing assembly, a mounting bracket 301 and a vision sensor 302; the Y-shaped bracket 201 is connected to the bottom plate 1; the fixing ring 202 is connected to the bottom plate 1; the circular ring 203 is rotatably connected to the fixing ring 202; the limiting disk 204 is fixedly connected to the inner side of the circular ring 203, and three through inclined holes are equidistantly arranged in a ring on the limiting disk 204, and the through inclined holes are used for enabling the connecting wire 2 to pass through the circular ring 203; the driving assembly is connected to the circular ring 203; the DD motor 208 is connected to the limiting disk 204; the output shaft of the DD motor 208 is fixedly connected to the disk 209; three pressing blocks 210 are fixedly connected to the disk 209 at equal intervals in a ring, and an inclined slot is formed in each pressing block 210, and the inclined slot is used for cooperating with the limiting disk 204 to jointly clamp and limit the wire core in the connecting wire 2; the fixing assembly is connected to the bottom plate 1; the mounting bracket 301 is fixedly connected to the bottom plate 1; two vision sensors 302 are mounted on the mounting bracket 301.

[0022] The fixing assembly includes a guide rail 211, a sliding block 212, a chuck 213, a support frame 214, an electric actuator 215, a connecting ring 216, a pin rod 217, a support 218 and a rope 219; the guide rail 211 is fixedly connected to the right part of the upper surface of the bottom plate 1; the sliding block 212 is slidably connected to the guide rail 211; the chuck 213 is rotatably connected to the sliding block 212; two support frames 214 are fixedly connected to the right part of the upper surface of the bottom plate 1; an electric actuator 215 is fixedly connected to each support frame 214, and the electric actuator 215 is an electric push rod; the telescopic parts of all the electric actuators 215 are jointly fixedly connected to a connecting ring 216; four pin rods 217 are fixedly connected to one side of the connecting ring 216 close to the chuck 213 at equal intervals in a ring, and eight circular holes matched with the pin rods 217 are formed in one side of the chuck 213 close to the connecting ring 216; the support 218 is fixedly connected to the right part of the upper surface of the bottom plate 1, and a pulley is mounted on the upper part of the support 218; the rope 219 is fixedly connected to the right side of the sliding block 212; the rope 219 is in contact with the pulley.

[0023] It further includes a clamping block 2011; three clamping blocks 2011 are fixedly connected to the upper part of the Y-shaped bracket 201 at equal intervals in a ring, and are used for limiting the wire core in the connecting wire 2.

[0024] The outer side of the clamping block 2011 is coated with a rubber layer, which is used to prevent the clamping block 2011 from scratching the wire core of the connecting wire 2.

[0025] It further includes a guiding block 2041; the guiding block 2041 is fixedly connected to the right side of the limiting disk 204, and is used for providing support for the wire core of the connecting wire 2.

[0026] One side of the guiding block 2041 close to the clamping block 2011 is set as a smooth elliptical shape, which is used to guide the movement of the wire core of the connecting wire 2 and prevent scratching the wire core of the connecting wire 2.

[0027] The driving assembly includes a straight-tooth ring 205, a motor 206 and a spur gear 207; the straight-tooth ring 205 is fixedly connected to the circular ring 203; the motor 206 is fixedly connected to the left part of the upper surface of the bottom plate 1; the output shaft of the motor 206 is fixedly connected to the spur gear 207; the spur gear 207 meshes with the straight-tooth ring 205.

[0028] Since the existing connecting wire 2 is covered with multiple layers of rubber protective layers, when the connecting wire 2 is used and connected to another cable or connector, it is usually necessary to strip the rubber layer at the end of the connecting wire 2 and twist the wire core of the connecting wire 2 according to the actual use situation. However, the existing metal wire twisting test equipment cannot directly obtain the performance of the wire core in the wire harness after twisting, and after the wire harness is twisted, it is impossible to directly judge the tightness between the rubber protective layers in the wire harness; To solve the above problems, when the performance detection equipment for the internal connecting wire 2 of this electrical appliance is in use, a section of wire of a length according to the standard requirements is intercepted in advance, and the insulating layer at one end of the connecting wire 2 is stripped manually so that the wire core at one end of the connecting wire 2 is exposed. Taking the wire core in the connecting wire 2 as three as an example, then the three wire cores in the connecting wire 2 are passed through the Y-shaped bracket 201 manually, and a corresponding clamping block 2011 is used to limit one wire core respectively. Then, the connecting wire 2 is moved to the left, and through the guiding action of the guiding block 2041, the three wire cores in the connecting wire 2 are passed through the three inclined holes in the limiting disc 204, and the ends of the three wire cores are located in the inclined grooves on the corresponding pressing block 210, as Figure 3As shown, then control the DD motor 208 to start. The output shaft of the DD motor 208 rotates to drive the disc 209 to rotate. The rotation of the disc 209 drives all the pressing blocks 210 to rotate. The rotation of the three pressing blocks 210 squeezes the ends of each wire core, causing the ends of the three wire cores to be pressed against the left side of the limit disc 204. Furthermore, through the cooperation of the three pressing blocks 210 and the limit disc 204, the ends of the three wire cores are clamped and limited. Then, pull the other end of the connecting wire 2, so that the other end of the connecting wire 2 moves into the chuck 213, and then manually tighten the chuck 213, so as to clamp and limit the other end of the connecting wire 2 through the chuck 213. Next, hang a counterweight of the required weight on the rope 219. Affected by the gravity of the weight, the rope 219 will move downward. Furthermore, the rope 219 pulls the sliding block 212 to slide to the right along the guide rail 211. The sliding of the sliding block 212 drives the chuck 213 to move. The movement of the chuck 213 pulls the other end of the connecting wire 2 to move, so that the whole connecting wire 2 is in a straight state. Then, manually use a marker pen to draw a marking line on the outer surface of the connecting wire 2 and on one of the wire cores along the axis of the connecting wire 2. And the initial positions of all the pin rods 217 are located in the circular holes corresponding to the left side of the chuck 213, so as to limit the chuck 213 through all the pin rods 217 and prevent the chuck 213 from rotating during the test. Then, make the chuck 213 energized, so that the whole connecting wire 2 is energized.

[0029] Then set the number of turns and revolutions, and then control the motor 206 to start. The output shaft of the motor 206 rotates to drive the spur gear 207 to rotate. The rotation of the spur gear 207 drives the spur gear ring 205 to rotate. The rotation of the spur gear ring 205 drives the ring 203 to rotate. The rotation of the ring 203 drives the limit disc 204 to rotate. The rotation of the limit disc 204 drives the three wire cores to rotate, and then drives the connecting wire 2 to rotate, so that the connecting wire 2 is twisted. Then, a vision sensor 302 on the mounting bracket 301 detects the connecting wire 2, and detects whether the marking line on the outer surface of the connecting wire 2 is misaligned with the marking line on one of the wire cores. If the marking line on the outer surface of the connecting wire 2 is misaligned with the marking line on one of the wire cores, it means that there is relative sliding between the coating layers of the connecting wire 2, which means that the coating layers of the connecting wire 2 are not tight enough. At the same time, another vision sensor 302 on the mounting bracket 301 records the state of the connecting wire 2 after the torsion test and compares it with the standard state, so as to determine whether the connecting wire 2 meets the production standard. After the test is completed, control the motor 206 to stop, so as to complete the torsion test of the connecting wire 2. At the same time, make the connecting wire 2 energized. After the torsion test of the connecting wire 2, detect whether the connecting wire 2 can be normally energized, so as to detect the durability, reliability and structural integrity of the connecting wire 2.

[0030] Embodiment 2: On the basis of Embodiment 1, according toFigures 7-8 As shown, it further includes a performance detection system; a performance detection system is connected to the bottom plate 1; the performance detection system includes a box body 303, a chassis 304, an electric slide rail 305, an electric slider 3051, a connecting rod 306 and an arc-shaped electric heating plate 307; two box bodies 303 are slidably connected to the middle of the bottom plate 1, and a notch for the movement of the connecting wire 2 is provided in the middle of all the box bodies 303; two chassis 304 are fixedly connected to the middle of the bottom plate 1; an electric slide rail 305 is fixedly connected to each chassis 304; two electric sliders 3051 are slidably connected to each electric slide rail 305; each box body 303 is fixedly connected to the corresponding electric slider 3051; two connecting rods 306 are fixedly connected to the inner wall of each box body 303; all the connecting rods 306 on the same box body 303 are jointly fixedly connected to an arc-shaped electric heating plate 307.

[0031] A heat insulation layer is provided inside the box body 303 to reduce the loss of heat in the box body 303.

[0032] It further includes rubber sheets 3031; two semi-circular ring-shaped rubber sheets 3031 are provided in the notch in the middle of each box body 303 to limit the connecting wire 2 and reduce the loss of heat in the box body 303.

[0033] It further includes a tensiometer 401 and an elastic member 402; the tensiometer 401 is detachably connected to the guide rail 211; the tensiometer 401 is detachably connected to the sliding block 212; the elastic member 402 is detachably connected to the guide rail 211, and the elastic member 402 is a spring; the elastic member 402 is detachably connected to the sliding block 212.

[0034] During the actual use of the wire harness, after the electrical appliance has been operating for a long time, the temperature inside the electrical appliance rises, resulting in an increase in the temperature of the wire harness. However, the existing equipment does not detect the various indicators of the wire harness after the temperature increase. To further simulate the performance of the connecting wire 2 during actual use, after both ends of the connecting wire 2 are clamped and limited, all the electric sliders 3051 are controlled to move towards each other along the corresponding electric slide rails 305. As a result, each pair of electric sliders 3051 moves to drive a box body 303 to move, and then the two box bodies 303 move towards each other, so that the two box bodies 303 combine to form a sealed space. At the same time, the two box bodies 303 moving towards each other drive the corresponding connecting rods 306 to move, and each pair of connecting rods 306 moves to drive an arc-shaped electric heating plate 307 to move. Thus, the two arc-shaped electric heating plates 307 move towards each other and move to the outside of the connecting wire 2, and the two arc-shaped electric heating plates 307 combine to form a cylinder. Then, the two arc-shaped electric heating plates 307 are controlled to be energized and operate, so as to heat the connecting wire 2, thus simulating the phenomenon that after the electrical appliance has been operating for a long time, the temperature inside the electrical appliance rises, resulting in an increase in the temperature of the connecting wire 2. Then, the motor 206 is controlled to start operating according to the same working principle above, and then drive all the connected components to rotate, thus twisting the connecting wire 2, and the two box bodies 303 are used for heat preservation to prevent a large amount of heat loss in the two box bodies 303. Then, the motor 206 is controlled to stop, and all the electric sliders 3051 are controlled to move away from each other along the corresponding electric slide rails 305, and then drive all the connected components to move, so that the two box bodies 303 move away from each other, and the two arc-shaped electric heating plates 307 move away from the connecting wire 2. Then, the visual sensor 302 on the upper left side of the mounting bracket 301 records the state of the connecting wire 2, so as to know the performance of the connecting wire 2 in the high-temperature state, thereby improving the diversity and accuracy of the detection.

[0035] Next, manually load the tensiometer 401 and the elastic member 402 between the guide rail 211 and the sliding block 212, record the initial value on the tensiometer 401, control the two electric actuators 215 to start, and the telescopic parts of the two electric actuators 215 move together to drive the connecting ring 216 to move to the right. The movement of the connecting ring 216 drives all the pin rods 217 to move, and the movement of all the pin rods 217 drives the sliding block 212 to move to the right along the guide rail 211. The movement of the sliding block 212 drives the chuck 213 to move, thereby pulling the other end of the connecting wire 2. When the value on the tensiometer 401 reaches the preset value, control the two electric actuators 215 to stop operating, and then the visual sensor 302 installed on the mounting bracket 301 records the overall state of the connecting wire 2, so as to detect the change in the ductility of the connecting wire 2.

[0036] The technical principles of the embodiments of the present invention have been described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the embodiments of the present invention and cannot be construed in any way as a limitation on the protection scope of the embodiments of the present invention. Based on the explanations herein, those skilled in the art can readily conceive of other specific implementation manners of the embodiments of the present invention without creative efforts, and these manners will all fall within the protection scope of the embodiments of the present invention.

Claims

1. A device for testing the performance of internal connecting wires of an electrical appliance, comprising a bottom plate (1); characterized in that: The device also comprises a Y-shaped bracket (201), a fixing ring (202), a circular ring (203), a limiting disk (204), a driving assembly, a DD motor (208), a circular disk (209), a pressing block (210), a fixing assembly, a mounting frame (301) and a visual sensor (302); the Y-shaped bracket (201) is connected to the bottom plate (1); the fixing ring (202) is connected to the bottom plate (1); the circular ring (203) is rotatably connected to the fixing ring (202); the limiting disk (204) is fixedly connected to the circular ring (203), and the limiting disk (204) is provided with a plurality of through-type oblique holes, the through-type oblique holes being used to allow the circular ring (203) to pass through; the circular ring (203) is connected to A driving assembly is provided, the driving assembly is used to drive the limit plate (204) to rotate; the limit plate (204) is connected to a DD motor (208); the output shaft of the DD motor (208) is fixedly connected to a disk (209); at least two pressing blocks (210) are fixedly connected to the disk (209), and each pressing block (210) is provided with an inclined groove, the inclined groove is used to cooperate with the limit plate (204) to clamp and limit the wire core in the connecting wire (2); a fixing assembly is connected to the bottom plate (1), the fixing assembly is used to fix one end of the connecting wire (2); a mounting frame (301) is fixedly connected to the bottom plate (1); and at least two visual sensors (302) are installed on the mounting frame (301).

2. The device for testing the performance of internal connecting wires of an electrical appliance according to claim 1, characterized in that: The fixing assembly comprises a guide rail (211), a sliding block (212), a chuck (213), a support frame (214), an electric actuator (215), a connecting ring (216), a pin rod (217), a support (218) and a rope (219); the guide rail (211) is fixedly connected to the right part of the upper surface of the bottom plate (1); the sliding block (212) is slidably connected to the guide rail (211); the chuck (213) is rotatably connected to the sliding block (212); at least two support frames (214) are fixedly connected to the upper surface of the bottom plate (1); each support frame (214) is fixedly connected to a electric actuators (215); the telescopic parts of all the electric actuators (215) are fixedly connected to a connecting ring (216); a plurality of pins (217) are fixedly connected to a side of the connecting ring (216) close to the chuck (213), and a plurality of round holes matching the pins (217) are opened on a side of the chuck (213) close to the connecting ring (216); a support (218) is fixedly connected to the right part of the upper surface of the bottom plate (1), and a pulley is installed on the upper part of the support (218); a rope (219) is fixedly connected to the right side of the sliding block (212); and the rope (219) is in contact with the pulley.

3. The device for testing the performance of internal connecting wires of an electrical appliance according to claim 2, characterized in that: It also includes a clamping block (2011); a plurality of clamping blocks (2011) are fixedly connected to the upper part of the Y-shaped bracket (201).

4. The device for testing the performance of internal connecting wires of an electrical appliance according to claim 3, characterized in that: The outer side of the card block (2011) is covered with a rubber layer.

5. An electrical appliance internal connection line performance testing device according to any one of claims 3-4, characterized in that: It also includes a guide block (2041); the guide block (2041) is fixedly connected to the right side of the limiting plate (204).

6. The device for testing the performance of internal connecting wires of an electrical appliance according to claim 5, characterized in that: A side of the guide block (2041) close to the clamping block (2011) is configured to be a smooth ellipse.

7. The device for testing the performance of internal connecting wires of an electrical appliance according to claim 6, characterized in that: The performance detection system is also included; the performance detection system is connected to the bottom plate (1); the performance detection system includes a box (303), a bottom frame (304), an electric slide rail (305), an electric slider (3051), a connecting rod (306) and an arc-shaped electric heating plate (307); at least two boxes (303) are slidably connected to the middle of the bottom plate (1), and all boxes (303) have slots in the middle for the connection line (2) to move; at least two bottoms are fixedly connected to the middle of the bottom plate (1) A base frame (304) is provided; each base frame (304) is fixedly connected to an electric slide rail (305); each electric slide rail (305) is slidably connected to at least two electric sliders (3051); each box (303) is fixedly connected to a corresponding electric slider (3051); the inner wall of each box (303) is fixedly connected to at least two connecting rods (306); all the connecting rods (306) on the same box (303) are fixedly connected to a curved electric heating plate (307).

8. The device for testing the performance of internal connecting wires of an electrical appliance according to claim 7, characterized in that: A heat-insulating layer is provided inside the box body (303).

9. The device for testing the performance of internal connecting wires of an electrical appliance according to claim 8, characterized in that: It also includes rubber sheets (3031); at least two semicircular ring (203)-shaped rubber sheets (3031) are arranged in the notch in the middle of each box body (303).

10. The device for testing the performance of internal connecting wires of an electrical appliance according to claim 9, characterized in that: It also includes a tension gauge (401) and an elastic member (402); the tension gauge (401) is detachably connected to the guide rail (211); the tension gauge (401) is detachably connected to the sliding block (212); the elastic member (402) is detachably connected to the guide rail (211); and the elastic member (402) is detachably connected to the sliding block (212).

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