Insulation performance test equipment for power distribution cabinet

Abstract

The invention belongs to the field of electrical performance test equipment, and particularly discloses insulation performance test equipment for a power distribution cabinet. Comprising a cabinet body; the double-head hydraulic cylinder is arranged in the cabinet body, and the double-head hydraulic cylinder is provided with an electric sliding rail; the electric sliding block is connected to an electric sliding rail of the double-end hydraulic cylinder in a sliding mode, an elastic telescopic rod is rotationally connected to the electric sliding block, and the telescopic end of the elastic telescopic rod is rotationally connected with a connecting frame; the circular plate is rotationally connected to the connecting frame, the connecting frame is rotationally connected with a rotating shell, sliding cylinders which are uniformly distributed in the circumferential direction are arranged on the rotating shell, and probes are slidably connected into the sliding cylinders. Through rotation of the double-head hydraulic cylinder and swinging of the elastic telescopic rod, in cooperation with stretching operation of the probe, the welding seam detection range is expanded, the integrity of welding seam detection of the power distribution cabinet is improved, meanwhile, the device can accurately and continuously detect a plurality of welding seams through the elastic telescopic rod, and the working continuity of the device is improved.

Description

Technical Field

[0001] The invention belongs to the field of electrical performance testing equipment, and in particular discloses an insulation performance testing equipment for a power distribution cabinet. Background Art

[0002] A distribution cabinet is a device used to receive and distribute electricity, control and protect electrical equipment. Existing distribution cabinets are usually made through multiple steps such as design, material selection, cutting, bending, welding, assembly, and spraying of insulating paint. Welding is used to fix the internal partitions of the distribution cabinet, and spraying of insulating paint is used to improve the insulation performance of the cabinet.

[0003] In the prior art, a safety performance testing device for a distribution cabinet with application number 202310245418.8 records the following technical solution: the telescopic end of the horizontal electric push rod drives the detection wheel to move in parallel, and the detection wheel rotates. Several straight rods and contacts on the detection wheel contact the welds of the distribution cabinet in turn, thereby completing the insulation detection of the unevenly painted welds of the distribution cabinet at multiple contact points. Although this invention application can detect the insulation performance of the welds of the distribution cabinet, this detection method can only detect a single weld, and then the detection position needs to be changed manually. The steps are cumbersome, and there are obvious detection blind spots in the distribution cabinet welds detected by this detection method. The detection results cannot fully represent the detection results of the insulation performance of the distribution cabinet, affecting the accuracy of the insulation performance test results of the distribution cabinet. Summary of the invention

[0004] In order to solve the problem that the insulation detection range of the weld of the power distribution cabinet is incomplete and the detection position is single, the present invention provides an insulation performance testing device for the power distribution cabinet.

[0005] The technical implementation scheme of the present invention is: an insulation performance test device for a power distribution cabinet, comprising: a cabinet body; a double-headed hydraulic cylinder, arranged in the cabinet body, the telescopic end of the double-headed hydraulic cylinder is rotatably connected to a support plate, the side wall of the double-headed hydraulic cylinder is provided with an electric slide rail, and the double-headed hydraulic cylinder is used to provide stable support during the detection process; an electric slider, slidably connected to the electric slide rail on the side wall of the double-headed hydraulic cylinder, the electric slider is rotatably connected to an elastic telescopic rod, the telescopic end of the elastic telescopic rod is rotatably connected to a connecting frame, the electric slider, the elastic telescopic rod and the connecting frame Jointly locate the position to be detected; a circular plate, rotatably connected to the connecting frame, the connecting frame is rotatably connected to a rotating shell rotatably connected to the circular plate, the rotating shell is provided with sliding cylinders evenly distributed in the circumference, a probe is slidably connected in the sliding cylinder, and the rotating shell drives the probe to rotate to complete the detection of the cabinet; a loop mechanism is arranged on the outside of the cabinet, the loop mechanism is used to assist in completing the complete passage detection of the cabinet; an auxiliary positioning mechanism is arranged at the telescopic end of the elastic telescopic rod, the auxiliary positioning mechanism is used to limit the rotation range of the connecting frame.

[0006] As a preferred embodiment of the present invention, the circuit mechanism includes: a test meter, which is arranged on the outside of the cabinet, and a paint scraping port is arranged on the outer surface of the cabinet. The test meter is connected to an electrical measuring connector and a wire, and the electrical measuring connector is fitted with the paint scraping port on the cabinet to make the test meter, the electrical measuring connector, the wire, the cabinet and the probe form a complete current circuit; a power component, which is arranged on the support plate on one side, and the power component is used to control the connection frame to move along a fixed track.

[0007] As a preferred embodiment of the present invention, the power assembly includes: a first motor, fixedly connected to the support plate on one side, the output shaft of the first motor and the telescopic end of one side of the double-headed hydraulic cylinder are transmitted through a gear set, and the first motor is used to control the rotation of the double-headed hydraulic cylinder; a first electric push rod, rotatably connected to the electric slider, the telescopic end of the first electric push rod is rotatably connected to the elastic telescopic rod, and the first electric push rod is used to control the swing angle of the elastic telescopic rod; a second motor, fixedly connected to the connecting frame, the output shaft of the second motor is fixedly connected to the rotating shell, and the second motor is used to control the rotation angle of the rotating shell.

[0008] As a preferred embodiment of the present invention, the auxiliary positioning mechanism includes: a limit frame, which is fixed to the telescopic end of the elastic telescopic rod, the limit frame is slidably connected with a mirror-image arc rod, a spring is fixed between the arc rod and the limit frame, the mirror-image arc rods are all squeezed and matched with the connecting frame, and the arc rod and the limit frame jointly limit the swing range of the connecting frame; the mirror-image limit plates are all rotatably connected to the connecting frame, the circular plate is fixed to the adjacent limit plates, a pressure sensing sheet is arranged on the limit plate, and the mirror-image limit plates are used to assist the probe in locating the weld position; a corner positioning assembly is arranged on the connecting frame, and the corner positioning assembly is used to eliminate the detection blind spot of the probe.

[0009] As a preferred embodiment of the present invention, the limit plate is composed of a flat plate and a rotating column, and the angle of the plane where the mirror image of the limit plate flat plate is located is 90°. The intersection line of the plane where the mirror image of the limit plate flat plate is located intersects with the detection position of the adjacent probe, which is used to assist the probe in locating the weld position of the cabinet.

[0010] As a preferred embodiment of the present invention, the center of the trajectory of the movement of the arc rod coincides with the rotation axis of the connecting frame, and the arc rod mirrored on the limit frame limits the rotation angle of the connecting frame to less than 90°, which is used to assist in quickly locating the positions of the upper and lower welds in the cabinet during the swinging process of the connecting frame.

[0011] As a preferred embodiment of the present invention, the axis of rotation of the mirror image limit plate coincides with the axis of rotation of the rotating shell, so as to keep the relative position of the limit plate and the rotating shell unchanged.

[0012] As a preferred embodiment of the present invention, the corner positioning assembly includes: a mirror-image second electric push rod, each fixedly connected to the circular plate, the probes evenly distributed circumferentially are fixedly connected to a fixing plate, the telescopic end of the second electric push rod is squeezed and fitted with the adjacent fixing plate through a connecting plate, a tension spring is fixedly connected between the sliding cylinder and the corresponding probe, and the second electric push rod and the adjacent fixing plate jointly move the adjacent probes to locate the corners of the weld.

[0013] As a preferred embodiment of the present invention, the second electric push rod is always located directly above one of the probes, so as to expand the range of the probe to detect the weld in the cabinet.

[0014] As a preferred embodiment of the present invention, it also includes: limit blocks evenly distributed in the circumferential direction, all of which are fixed in the rotating shell, the sliding cylinder is connected to the rotating shell in a limiting sliding manner, the number of limit blocks is the same as the number of sliding cylinders, and a spring is fixed between the limit block and the adjacent sliding cylinder to ensure the contact state between the probe and the cabinet weld.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention expands the range of weld detection and improves the integrity of weld detection in the distribution cabinet through the rotation of the double-head hydraulic cylinder and the swing of the elastic telescopic rod, in coordination with the extension operation of the probe. At the same time, the elastic telescopic rod enables the device to perform accurate and continuous detection of multiple welds, thereby improving the continuity of the operation of the device.

[0016] 2. The present invention assists the device to quickly complete the probe contact and positioning weld by the limiting frame and the positioning support of the limiting plate in the auxiliary positioning mechanism, and makes the subsequent weld connection detection positioning point positions more uniform, thereby improving the effectiveness of the detection results of the device.

[0017] 3. The present invention makes the probe keep in contact with the detection points at different positions on the uneven weld by sliding the sliding cylinder on the rotating shell and cooperating with the elastic force of the spring connected to the limit block, thereby ensuring that the device can perform adaptive detection on different weld positions and improving the comprehensiveness of the detection of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of the parts of the electrical measuring connector and the conductor of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the parts of the first motor and the first electric push rod of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the parts at the connecting frame and the circular plate of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the second motor and the parts at the arc-shaped rod of the present invention; Figure 6 It is a three-dimensional structural schematic diagram of the sliding cylinder and the probe parts of the present invention.

[0019] The meanings of the reference numerals in the figure are: 1-cabinet, 2-double-head hydraulic cylinder, 3-support plate, 4-electric slider, 5-elastic telescopic rod, 6-connecting frame, 7-circular plate, 8-rotating shell, 9-sliding cylinder, 10-probe, 201-detection table, 202-electric measuring connector, 203-wire, 301-first motor, 302-first electric push rod, 303-second motor, 401-limiting frame, 402-arc rod, 403-limiting plate, 501-second electric push rod, 502-fixed plate, 601-limiting block. DETAILED DESCRIPTION

[0020] Combine the following Figure 1-Figure 6, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0021] Example 1: During operation, the existing insulation performance detection device for distribution cabinet has a limited moving distance, resulting in an obvious blind spot in the detection of the weld of the distribution cabinet, which reduces the accuracy and effectiveness of the detection results of the insulation performance detection device. At the same time, the existing insulation performance detection device for distribution cabinet can only detect a single weld of the distribution cabinet, and then the operator needs to adjust the position of the insulation performance detection device multiple times, which reduces the continuity of the insulation detection of the distribution cabinet.

[0022] An insulation performance test device for distribution cabinets, please refer to Figure 1-Figure 6 As shown, it includes: a cabinet 1; a double-headed hydraulic cylinder 2, which is arranged in the cabinet 1, and the telescopic end of the double-headed hydraulic cylinder 2 is rotatably connected to a support plate 3, and the side wall of the double-headed hydraulic cylinder 2 is provided with an electric slide rail, and the double-headed hydraulic cylinder 2 is used to provide stable support during the detection process; an electric slider 4, which is slidably connected to the electric slide rail on the side wall of the double-headed hydraulic cylinder 2, and the electric slider 4 is rotatably connected to an elastic telescopic rod 5, and the telescopic end of the elastic telescopic rod 5 is rotatably connected to a connecting frame 6, and the electric slider 4, the elastic telescopic rod 5 and the connecting frame 6 jointly locate the position to be detected; The circular plate 7 is rotatably connected to the connecting frame 6, and the connecting frame 6 is rotatably connected to a rotating shell 8 rotatably connected to the circular plate 7. The rotating shell 8 is provided with sliding cylinders 9 evenly distributed in the circumference, and a probe 10 is slidably connected in the sliding cylinder 9. The rotating shell 8 drives the probe 10 to rotate to complete multi-point detection of the cabinet 1; the loop mechanism is arranged on the outside of the cabinet 1, and the loop mechanism is used to assist in completing the complete passage detection of the cabinet 1; the auxiliary positioning mechanism is arranged at the telescopic end of the elastic telescopic rod 5, and the auxiliary positioning mechanism is used to limit the rotation range of the connecting frame 6.

[0023] In the above scheme, it is intended to solve the problem in the prior art that when the insulation performance detection device detects the distribution cabinet weld, the probe 10 detects the distribution cabinet weld incompletely, and is used to improve the representativeness of the test results of the insulation performance detection, and at the same time enable the insulation performance detection device to continuously detect multiple distribution cabinet welds. The insulation performance test equipment of this embodiment includes a double-headed hydraulic cylinder 2, the double-headed hydraulic cylinder 2 is externally connected to a hydraulic pump, and a control panel is provided on the double-headed hydraulic cylinder 2 (which is an existing mechanism, not shown in the figure), and the double-headed hydraulic cylinder 2 is used to fix the working position of the device The electric slider 4 slides up and down on the side wall of the double-headed hydraulic cylinder 2 through the electric slide rail to achieve the purpose of changing the probe 10 to detect the weld position of the distribution cabinet. The electric slider 4, the circuit mechanism and the power assembly are all electrically connected to the control panel. The two telescopic ends of the double-headed hydraulic cylinder 2 fix the device in the cabinet 1 near the weld to be detected through the support plate 3. The telescopic rod in the elastic telescopic rod 5 and its shell are connected by a spline. The double-headed hydraulic cylinder 2 rotates itself to make the rotating shell 8 move at a uniform speed from left to right along the weld, thereby ensuring the comprehensiveness of the device for weld detection.

[0024] Working process: the operator first places the device near the weld to be tested in the cabinet 1. The device tests the upper and lower welds between the two partitions on the rear side of the cabinet 1. During this process, the rotating shell 8 on the connecting frame 6 first contacts and squeezes the rear side of the cabinet 1. As the double-headed hydraulic cylinder 2 moves into the cabinet 1, the telescopic end of the elastic telescopic rod 5 contracts and accumulates force. Then the operator starts the hydraulic pump, and the two telescopic ends of the double-headed hydraulic cylinder 2 extend synchronously. The double-headed hydraulic cylinder 2 is fixed in the cabinet 1 by two support plates 3, and the hydraulic pump stops. At this time, the electric slider 4 is located in the middle of the two welds to be tested in the vertical direction. Then the operator controls The panel starts the electric slider 4, and the electric slider 4 moves upward. After the electric slider 4 moves a certain distance, the connecting frame 6 approaches the weld on the upper side of the cabinet 1, and the electric slider 4 stops. Then the power component controls the elastic telescopic rod 5 to swing upward, and the telescopic end of the elastic telescopic rod 5 gradually extends out. The connecting frame 6 swings upward relative to the elastic telescopic rod 5 under the action of the auxiliary positioning mechanism. When the auxiliary positioning mechanism is fixed at a right angle to the weld of the cabinet 1, the probe 10 on the rearmost side of the rotating shell 8 contacts the weld on the upper side of the cabinet 1, and then the power component controls the double-headed hydraulic cylinder 2 to rotate, and the elastic telescopic rod 5 swings to the left, and the telescopic end of the elastic telescopic rod 5 keeps the tendency to extend out.

[0025] During the rotation of the double-headed hydraulic cylinder 2, when the connecting frame 6 moves to the leftmost side of the weld, the power component stops rotating the double-headed hydraulic cylinder 2, and the loop mechanism starts working. The loop mechanism detects the insulation through the contact between the probe 10 and the weld of the distribution cabinet. The corner positioning component controls the probe 10 on the left rear side to slide out of the corresponding sliding cylinder 9. The probe 10 performs contact detection on the three-sided intersection of the left side of the weld to ensure the comprehensiveness of the weld detection. After that, the power component controls the double-headed hydraulic cylinder 2 to rotate again. The double-headed hydraulic cylinder 2 drives the elastic telescopic rod 5 to swing to the right, and the telescopic end of the elastic telescopic rod 5 extends adaptively, so that the auxiliary positioning mechanism on the connecting frame 6 fits at the right angle of the weld of the cabinet 1 and slides to the right. During this process, the power component controls the rotating shell 8 to rotate step by step, and the rotating shell 8 rotates The probe 10 in contact with the weld point is constantly switched to avoid relative sliding when the probe 10 contacts the weld, which causes wear and damage to the weld. When the connecting frame 6 moves to the rightmost end of the upper weld in the cabinet 1, the power component stops rotating the double-headed hydraulic cylinder 2, and the corner positioning component controls the probe 10 on the right rear side to slide out of the corresponding sliding cylinder 9, and contacts the intersection of the three surfaces on the right side of the weld. At this point, a comprehensive inspection of a weld is completed, and then the control panel controls the electric slider 4 to move downward by twice the initial moving distance, and the power component controls the elastic telescopic rod 5 to swing downward by twice its initial swing angle, and the auxiliary positioning mechanism quickly completes the positioning of the weld on the lower side of the cabinet 1, so that the device can continuously perform weld inspection and reduce the frequency of operators moving the device.

[0026] When the auxiliary positioning mechanism completes the positioning of the weld on the lower side of the cabinet body 1, the power component controls the double-headed hydraulic cylinder 2 to rotate in the opposite direction, and the connecting frame 6 drives the rotating shell 8 from right to left to complete the detection of the weld on the lower side of the cabinet body 1. Finally, the power component controls the elastic telescopic rod 5 to swing upward and reset, and the electric slider 4 moves and resets. The hydraulic pump controls the two telescopic ends of the double-headed hydraulic cylinder 2 to retract, and the device is moved to the vicinity of the other two welds to be detected in the distribution cabinet. The above detection operations are repeated continuously to complete the insulation performance detection of a distribution cabinet, and all parts are in the initial position.

[0027] Please refer to Figure 1 and Figure 2 As shown, the circuit mechanism includes: a test meter 201, which is arranged on the outside of the cabinet 1, and a paint scraping port is arranged on the outer side of the cabinet 1. The test meter 201 is connected with an electrical measuring connector 202 and a wire 203. The electrical measuring connector 202 fits with the paint scraping port on the cabinet 1, so that the test meter 201, the electrical measuring connector 202, the wire 203, the cabinet 1 and the probe 10 form a complete current circuit; a power component, which is arranged on a support plate 3 on one side, and the power component is used to control the connection frame 6 to move along a fixed track.

[0028] In the above scheme, current is mainly provided to the probe 10, so that the test meter 201, the measuring connector 202, the wire 203, the cabinet 1 and the probe 10 form a complete current loop, so as to achieve the purpose of quickly detecting the insulation performance of the distribution cabinet. The wire 203 is electrically connected to a number of probes 10 evenly distributed circumferentially. When using the test meter 201, the operator needs to hold it in hand for a long time, and stick the measuring connector 202 on the main body under the insulating paint layer of the cabinet 1. Then, when the probe 10 contacts the weld, the degree of the test meter 201 changes, so as to achieve the purpose of judging whether the insulation performance at the weld of the cabinet 1 is qualified. During the operation of the device, there is always a probe 10 in contact with the weld of the cabinet 1.

[0029] Please refer to Figure 2 , Figure 3 and Figure 5 As shown, the power assembly includes: a first motor 301, fixedly connected to the support plate 3 on one side, the output shaft of the first motor 301 and the telescopic end on one side of the double-headed hydraulic cylinder 2 are transmitted through a gear set, and the first motor 301 is used to control the rotation of the double-headed hydraulic cylinder 2; a first electric push rod 302, rotatably connected to the electric slider 4, the telescopic end of the first electric push rod 302 is rotatably connected to the elastic telescopic rod 5, and the first electric push rod 302 is used to control the swing angle of the elastic telescopic rod 5; a second motor 303, fixedly connected to the connecting frame 6, the output shaft of the second motor 303 is fixedly connected to the rotating shell 8, and the second motor 303 is used to control the rotation angle of the rotating shell 8.

[0030] In the above scheme, mainly to assist in completing related operations such as fixed-angle rotation of the double-headed hydraulic cylinder 2, fixed-angle swinging of the elastic telescopic rod 5 and fixed-angle rotation of the rotating shell 8, the first motor 301 causes the double-headed hydraulic cylinder 2 to rotate at a fixed angle through a gear set. While the double-headed hydraulic cylinder 2 rotates, the support plate 3 and the cabinet body 1 are relatively fixed. The first electric push rod 302 controls the elastic telescopic rod 5 to swing up and down by extending and contracting the telescopic end. The telescopic end of the first electric push rod 302 is initially only half extended. The first electric push rod 302 is located below the elastic telescopic rod 5. The first motor 301, the first electric push rod 302 and the second motor 303 are all electrically connected to the control panel.

[0031] Working process: when the device is initially working, after the electric slider 4 moves upward for a distance, the control panel starts the first electric push rod 302, and the telescopic end of the first electric push rod 302 extends to make the elastic telescopic rod 5 swing upward. When the auxiliary positioning mechanism is positioned, the control panel closes the first electric push rod 302, and then the control panel starts the first motor 301. The first motor 301 rotates the double-headed hydraulic cylinder 2 through the gear set. After the connecting frame 6 moves to the left to the leftmost side of the upper weld in the cabinet 1, the output shaft of the first motor 301 drives the double-headed hydraulic cylinder 2 to reverse, and the connecting frame 6 drives the rotating shell 8 to move gradually to the right along the weld under the support of the auxiliary positioning mechanism. At the same time, the control panel controls the output shaft of the second motor 303 to drive the rotating shell 8 to rotate. The rotation speed of the rotating shell 8 varies adaptively according to the speed of the relative movement of the connecting frame 6 and the weld. The probe 10 on the rotating shell 8 contacts the weld point in turn for detection to avoid relative sliding when the probe 10 contacts the weld, effectively ensuring the safety of the paint surface at the weld.

[0032] Please refer to Figure 4 and Figure 5 As shown, the auxiliary positioning mechanism includes: a limit frame 401, which is fixed to the telescopic end of the elastic telescopic rod 5, the limit frame 401 is slidably connected with a mirror-image arc rod 402, a spring is fixed between the arc rod 402 and the limit frame 401, the mirror-image arc rod 402 is squeezed and matched with the connecting frame 6, and the arc rod 402 and the limit frame 401 jointly limit the swing range of the connecting frame 6; the mirror-image limit plates 403 are all rotatably connected to the connecting frame 6, the circular plate 7 is fixed to the adjacent limit plates 403, and the limit plates 403 are provided with pressure sensing sheets, and the mirror-image limit plates 403 are used to assist the probe 10 in locating the weld position; a corner positioning component is arranged on the connecting frame 6, and the corner positioning component is used to eliminate the probe 10 The detection blind spot, the limit plate 403 is composed of a flat plate and a rotating column, the angle of the plane where the mirror limit plate 403 plate is located is 90°, the intersection line of the plane where the mirror limit plate 403 plate is located intersects with the detection position of the adjacent probe 10, which is used to assist the probe 10 in locating the weld position of the cabinet 1, the center of the moving trajectory of the arc rod 402 coincides with the rotation axis of the connecting frame 6, and the mirror arc rod 402 on the limit frame 401 limits the rotation angle of the connecting frame 6 to be less than 90°, which is used to assist the connecting frame 6 in quickly locating the positions of the upper and lower welds in the cabinet 1 during the swinging process, and the rotation axis of the mirror limit plate 403 coincides with the rotation axis of the rotating shell 8, which is used to keep the relative position of the limit plate 403 and the rotating shell 8 unchanged.

[0033] In the above scheme, it is mainly to assist the connecting frame 6 to drive the probe 10 to quickly approach and locate the position of the weld, control the force of the probe 10 contacting and squeezing the weld, speed up the speed of the device to complete the detection of two welds, and improve the accuracy of the insulation detection results of the device. The plane where the axis of several probes 10 is located is at the same angle as the plane where the two limit plates 403 are located, which is used to make the contact points of several probes 10 with the weld always located in the middle position of the weld, and the pressure sensing sheets on the limit plates 403 are electrically connected to the control panel.

[0034] Working process: after the double-head hydraulic cylinder 2 is fixed to the cabinet 1 through two supporting plates 3, the two limit plates 403 and the probe 10 at the rearmost side of the rotating shell 8 squeeze the rear side surface inside the cabinet 1 under the thrust of the telescopic end of the elastic telescopic rod 5. When the elastic telescopic rod 5 swings upward for the first time, the two limit plates 403 slide upward along the rear side surface inside the cabinet 1, and the telescopic end of the elastic telescopic rod 5 gradually extends out. The connecting frame 6 rotates upward relative to the elastic telescopic rod 5, and the connecting frame 6 pushes the upper arc rod 402, and the arc rod 402 compresses the connected spring. As the elastic telescopic rod 5 swings, the connecting frame 6 is under the elastic force of the spring connected to the upper arc rod 402. The first motor 301 controls the double-headed hydraulic cylinder 2 to rotate, and the two limit plates 403 move rightwardly at a right angle along the weld of the cabinet 1, and the two limit plates 403 rotate relative to the connecting frame 6. When the device completes the detection of the upper weld, the control panel stops the first electric push rod 302. At this time, the rearmost probe 10 on the rotating shell 8 is aligned with the upper weld of the cabinet 1. Then, the first motor 301 controls the double-headed hydraulic cylinder 2 to rotate, and the two limit plates 403 move rightward at a right angle along the weld of the cabinet 1. The two limit plates 403 rotate relative to the connecting frame 6. When the device completes the detection of the upper weld, the control panel stops the first electric push rod 302. An electric push rod 302 controls the elastic telescopic rod 5 to swing downward, and the lower limit plate 403 slides downward in contact with the rear side of the cabinet 1, and the limit plate 403 drives the connecting frame 6 to swing downward relative to the elastic telescopic rod 5, and the lower arc rod 402 is compressed and compresses the connected spring. When the connecting frame 6 drives the lower arc rod 402 to move the limit frame 401 to the extreme position, as the elastic telescopic rod 5 continues to swing downward, the elastic telescopic rod 5 rigidly drives the connecting frame 6 and the two limit plates 403 to swing downward through the limit frame 401 and the arc rod 402, and the lower limit plate 403 loses contact with the rear side of the cabinet 1, and the two limit plates 403 gradually swing downward. When the connecting frame 6 rotates 45°, the two limit plates 403 continue to swing downward, and the upper limit plate 403 fits against the rear side surface inside the cabinet 1. As the elastic telescopic rod 5 swings downward, the upper limit plate 403 slides downward along the rear side surface inside the cabinet 1. After the lower limit plate 403 fits against the lower side surface of the lower weld in the cabinet 1, the control panel stops the first electric push rod 302, and the positioning of the weld on the lower side of the cabinet 1 is completed. When the device is taken out after completing the inspection of the two welds, the limit plate 403 loses contact and extrusion with the cabinet 1, and the connecting frame 6 swings back to its original position under the elastic force of the spring connected to the corresponding arc rod 402, and the telescopic end of the elastic telescopic rod 5 extends out.

[0035] Please refer to Figure 5 and Figure 6As shown, the corner positioning assembly includes: a mirror-image second electric push rod 501, which is fixedly connected to the circular plate 7, and the probes 10 evenly distributed in the circumferential direction are fixedly connected with a fixing plate 502. The telescopic end of the second electric push rod 501 is squeezed and matched with the adjacent fixing plate 502 through a connecting plate, and a tension spring is fixedly connected between the sliding cylinder 9 and the corresponding probe 10. The second electric push rod 501 and the adjacent fixing plate 502 jointly move the adjacent probes 10 to locate the corner of the weld. The second electric push rod 501 is always located directly above one of the probes 10, which is used to expand the range of the probe 10 to detect the weld in the cabinet 1.

[0036] In the above scheme, it is mainly to control one of the probes 10 to extend from the corresponding sliding cylinder 9 to complete the detection of the left and right corners of the weld, ensure the comprehensiveness of the detection range of the device, and improve the effectiveness of the detection effect of the device. During the movement of the limit plate 403 against the rear side of the cabinet 1, the two second electric push rods 501 are relatively fixed to the limit plate 403 and rotate synchronously. The second electric push rods 501 are electrically connected to the control panel. During the operation of the device, when the connecting frame 6 is located at the left two ends of the weld through the two limit plates 403, the control panel starts the left second electric push rod 501, and the telescopic end of the second electric push rod 501 is connected to the corresponding fixed plate 5 02 drives the corresponding probe 10 to move, and the probe 10 slides out of the corresponding sliding cylinder 9. The probe 10 stretches the tension spring connected to it, and the probe 10 contacts the left end of the weld to complete the detection. Then the control panel controls the telescopic end of the second electric push rod 501 to shrink and reset, and the probe 10 resets under the tension of the connected tension spring. After that, when the connecting frame 6 moves to the right end of the upper weld inside the cabinet 1, the control panel starts the second electric push rod 501 on the right side, and the second electric push rod 501 on the right side drives the corresponding probe 10 to complete the detection of the right end of the upper weld inside the cabinet 1. At this point, the device completes the detection of a weld. After that, when the connecting frame 6 moves to the lower weld inside the cabinet 1, the above-mentioned detection operation is repeated.

[0037] In the above embodiment, the connection relationship between the sliding cylinder 9 and the rotating shell 8 can be regarded as a fixed connection. However, in the lower embodiment, the connection relationship between the sliding cylinder 9 and the rotating shell 8 is a limited sliding connection.

[0038] Example 2: Based on Example 1, please refer to Figure 6 As shown, it also includes: circumferentially evenly distributed limit blocks 601, all of which are fixedly connected to the rotating shell 8, the sliding cylinder 9 is connected to the rotating shell 8 in a limited sliding manner, the number of the limit blocks 601 is the same as the number of the sliding cylinders 9, and a spring is fixedly connected between the limit blocks 601 and the adjacent sliding cylinders 9 to ensure the contact state of the probe 10 and the weld of the cabinet 1.

[0039] In the above scheme, the probe 10 is intended to detect the weld on the cabinet 1. The weld itself is uneven, which causes the probe 10 to have no contact or excessive contact when detecting the weld. If the probe 10 is over-extruded with the weld, the positioning position of the limit plate 403 and the probe 10 will be offset, resulting in a decrease in the accuracy and effectiveness of the detection result of the device. When the limit plate 403 assists the probe 10 to move along the weld for detection, the probe 10 and the corresponding sliding cylinder 9 have initially extended out of the rotating shell 8. Since the weld itself is uneven, when the probe 10 contacts and squeezes the weld, the probe 10 moves into the rotating shell 8 through the corresponding sliding cylinder 9 of the tension spring, and the sliding cylinder 9 compresses the spring between the corresponding limit block 601. When the probe 10 loses contact with the weld, the probe 10 and the corresponding sliding cylinder 9 move and reset under the elastic force of the connected spring. Through the action of the limit block 601 and the spring connected thereto, the probe 10 in the device accurately contacts the uneven weld to ensure the effectiveness of the detection result of the device.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An insulation performance test device for a power distribution cabinet, characterized in that: include: Cabinet (1); A double-headed hydraulic cylinder (2) is arranged in the cabinet (1); the telescopic end of the double-headed hydraulic cylinder (2) is rotatably connected to a support plate (3); the side wall of the double-headed hydraulic cylinder (2) is provided with an electric slide rail; the double-headed hydraulic cylinder (2) is used to provide stable support during the detection process; An electric slide block (4) is slidably connected to an electric slide rail on a side wall of the double-head hydraulic cylinder (2); an elastic telescopic rod (5) is rotatably connected to the electric slide block (4); a telescopic end of the elastic telescopic rod (5) is rotatably connected to a connecting frame (6); the electric slide block (4), the elastic telescopic rod (5) and the connecting frame (6) jointly locate a position to be detected; A circular plate (7) is rotatably connected to the connecting frame (6); the connecting frame (6) is rotatably connected to a rotating shell (8) rotatably connected to the circular plate (7); the rotating shell (8) is provided with sliding cylinders (9) evenly distributed in the circumferential direction; a probe (10) is slidably connected in the sliding cylinder (9); the rotating shell (8) drives the probe (10) to rotate to complete the detection of the cabinet (1); A loop mechanism is arranged on the outside of the cabinet (1), and the loop mechanism is used to assist in completing a complete path detection of the cabinet (1); An auxiliary positioning mechanism is arranged at the telescopic end of the elastic telescopic rod (5), and the auxiliary positioning mechanism is used to limit the rotation range of the connecting frame (6).

2. The insulation performance testing device for a power distribution cabinet according to claim 1, characterized in that: The circuit mechanism comprises: A test meter (201) is arranged on the outside of the cabinet (1); a paint scraping opening is arranged on the outer surface of the cabinet (1); the test meter (201) is connected to an electric measuring connector (202) and a wire (203); the electric measuring connector (202) fits the paint scraping opening on the cabinet (1) so that the test meter (201), the electric measuring connector (202), the wire (203), the cabinet (1) and the probe (10) form a complete current loop; A power assembly is arranged on the support plate (3) on one side, and the power assembly is used to control the connection frame (6) to move along a fixed track.

3. The insulation performance testing device for a power distribution cabinet according to claim 2, characterized in that: The power assembly includes: A first motor (301) is fixedly connected to the support plate (3) on one side, and the output shaft of the first motor (301) is connected to the telescopic end on one side of the double-headed hydraulic cylinder (2) through a gear train, and the first motor (301) is used to control the rotation of the double-headed hydraulic cylinder (2); A first electric push rod (302) is rotatably connected to the electric slider (4), a telescopic end of the first electric push rod (302) is rotatably connected to the elastic telescopic rod (5), and the first electric push rod (302) is used to control the swing angle of the elastic telescopic rod (5); The second motor (303) is fixedly connected to the connecting frame (6); the output shaft of the second motor (303) is fixedly connected to the rotating shell (8); and the second motor (303) is used to control the rotation angle of the rotating shell (8).

4. The insulation performance testing device for a power distribution cabinet according to claim 3 is characterized in that: The auxiliary positioning mechanism includes: A limit frame (401) is fixedly connected to the telescopic end of the elastic telescopic rod (5); the limit frame (401) is slidably connected to a mirror-image arc rod (402); a spring is fixedly connected between the arc rod (402) and the limit frame (401); the mirror-image arc rods (402) are both pressed and matched with the connecting frame (6); the arc rod (402) and the limit frame (401) jointly limit the swing range of the connecting frame (6); The mirror-image limit plates (403) are both rotatably connected to the connecting frame (6), the circular plate (7) is fixedly connected to the adjacent limit plates (403), the limit plates (403) are provided with pressure sensing sheets, and the mirror-image limit plates (403) are used to assist the probe (10) in locating the weld position; A corner positioning component is arranged on the connecting frame (6), and the corner positioning component is used to eliminate a detection blind spot of the probe (10).

5. The insulation performance testing device for a power distribution cabinet according to claim 4, characterized in that: The limiting plate (403) is composed of a flat plate and a rotating column. The included angle of the plane where the mirror image of the limiting plate (403) is located is 90°. The intersection line of the plane where the mirror image of the limiting plate (403) is located intersects with the detection position of the adjacent probe (10), so as to assist the probe (10) in locating the weld position of the cabinet (1).

6. The insulation performance testing device for a power distribution cabinet according to claim 4, characterized in that: The center of the moving trajectory of the arc rod (402) coincides with the rotation axis of the connecting frame (6), and the arc rod (402) mirrored on the limit frame (401) limits the rotation angle of the connecting frame (6) to less than 90°, which is used to assist the connecting frame (6) in quickly locating the positions of the upper and lower welds in the cabinet (1) during the swinging process.

7. The insulation performance testing device for a power distribution cabinet according to claim 5, characterized in that: The axis of rotation of the mirror image limit plate (403) coincides with the axis of rotation of the rotating shell (8), so as to keep the relative position of the limit plate (403) and the rotating shell (8) unchanged.

8. The insulation performance testing device for a power distribution cabinet according to claim 5, characterized in that: The corner positioning component comprises: The mirror-image second electric push rods (501) are all fixedly connected to the circular plate (7), and the probes (10) evenly distributed in the circumferential direction are all fixedly connected with fixed plates (502). The telescopic ends of the second electric push rods (501) are squeezed and matched with the adjacent fixed plates (502) through the connecting plates. A tension spring is fixedly connected between the sliding cylinder (9) and the corresponding probes (10). The second electric push rods (501) and the adjacent fixed plates (502) jointly move the adjacent probes (10) to the corners of the positioning weld.

9. The insulation performance testing device for a power distribution cabinet according to claim 8, characterized in that: The second electric push rod (501) is always located directly above one of the probes (10), and is used to expand the range of the probe (10) for detecting the weld inside the cabinet (1).

10. The insulation performance testing device for a power distribution cabinet according to claim 9, characterized in that: Also included are: The circumferentially evenly distributed limit blocks (601) are all fixedly connected to the rotating shell (8), the sliding cylinder (9) is connected to the rotating shell (8) in a limit sliding manner, the number of the limit blocks (601) is the same as the number of the sliding cylinders (9), and a spring is fixedly connected between the limit blocks (601) and the adjacent sliding cylinders (9) to ensure the contact state of the probe (10) and the welding seam of the cabinet (1).

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