A strength testing device for insulator production

Abstract

The present invention discloses a strength detection device for insulator production, which relates to the technical field of insulator detection. It comprises: a support, the support is rotatably connected with a mounting ring, the support is installed with a motor, the output shaft of the motor is transmitted to the mounting ring through a gear set; a support frame, which is arranged on the support, the support frame is fixedly connected with a guide frame; a plurality of detection units, which are all arranged on the mounting ring and are used to detect the strength of the insulator, the detection unit comprises: a mounting frame, which is fixedly connected to the mounting ring, the mounting frame is limited and sealingly slidably connected with an extrusion frame, a first spring is fixedly connected between the extrusion frame and the mounting ring; an extrusion assembly, which is arranged on the extrusion frame. The present invention detects the strength of the insulator by reciprocating multiple detection units and extruding the middle part of the insulator support at both ends, thereby realizing continuous and automatic detection of the insulator, saving the operation process and improving the detection efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of insulator detection, and in particular to a strength detection device for insulator production. Background Art

[0002] Insulators are key components installed in power systems between conductors with potential differences or between conductors and grounding structures. Their core function is to provide reliable electrical insulation and achieve mechanical fixation of conductors. As core components of transmission lines, insulators need to withstand composite mechanical stresses such as conductor deadweight, wind load, ice and snow load for a long time. They need to cope with sharply increased bending stress under extreme weather conditions such as typhoons and icing. This special working condition requires insulators to have excellent mechanical strength and structural integrity. Therefore, insulators need to be strength tested during the production process to eliminate insulators with manufacturing defects (ceramic and glass insulators may produce internal pores, micro cracks and other micro defects during the sintering process) to ensure the normal operation of transmission lines. However, when performing strength testing on insulators, all insulators to be tested need to be fixed one by one in the testing tooling for single-piece testing. This discrete operation mode makes the operation process complicated and the strength testing efficiency of insulators low. Summary of the invention

[0003] The invention provides a strength testing device for insulator production, so as to overcome the disadvantages that when testing insulators, the insulators need to be fixed one by one and then tested individually, which results in a complicated operation process and low testing efficiency.

[0004] The technical solution is: a strength testing device for insulator production, including: A support, the support is rotatably connected to a mounting ring, the support is equipped with a motor, and the output shaft of the motor is driven by the mounting ring through a gear set; A support frame, arranged on the support seat, wherein the support frame is fixedly connected to a guide frame; Several detection units are arranged on the mounting ring to detect the strength of the insulator, and the detection units include: A mounting frame is fixedly connected to the mounting ring, the mounting frame is limited and sealingly slidably connected to an extrusion frame, a first spring is fixedly connected between the extrusion frame and the mounting ring, and a side of the guide frame close to the support is in contact with the extrusion frame and is used to guide the movement of the extrusion frame; An extrusion assembly is arranged on the extrusion frame and is used to apply a multi-point and uniform extrusion force to the middle of the insulator; The supporting assembly is arranged on the mounting ring and is used for supporting the two ends of the insulator.

[0005] Furthermore, the guide frame is formed by sequentially connecting a guide portion, a transition portion, an extrusion portion and a connection block, and the height of the guide portion of the guide frame is greater than the height of the extrusion portion thereon.

[0006] Furthermore, the extrusion assembly comprises: An extrusion roller is rotatably connected to the extrusion frame, a liquid flow channel is provided in the extrusion roller, and a flexible tube is fixedly connected to the extrusion roller, and the two together form a force-applying cavity communicated with the liquid flow channel; Two pistons are both sealed and slidably connected in the liquid-containing flow channel, and a second spring is fixedly connected between the two pistons; The adjusting component is arranged in the extrusion frame and is used for adjusting the pressure in the force-applying cavity when the flexible tube extrudes the insulator.

[0007] Furthermore, the support assembly comprises: Two T-shaped frames are both fixed to the position of the mounting ring close to the mounting frame. The T-shaped frame is limitedly and slidably connected to two support blocks, and the support blocks are used to support insulators.

[0008] Furthermore, the T-shaped frame is slidably connected to a tension block, and a tension spring is fixedly connected between the two. The tension block and the two support blocks on the same T-shaped frame are commonly wrapped with a flexible belt.

[0009] Furthermore, the T-shaped frame is threadedly connected with an adjusting knob, and the adjusting knob is used to limit the movement range of the adjacent tensioning blocks.

[0010] Furthermore, the adjustment component includes: A limiting ring is fixedly connected to the adjacent mounting frame, the extrusion frame is provided with a mutually communicating accommodating cavity and an annular groove, the accommodating cavity is sealingly and slidably connected with a sealing ring that is sealingly and slidably connected with the mounting frame, the liquid containing flow channel is connected with the adjacent annular groove, and the connecting part between the liquid containing flow channel and the adjacent annular groove and the connecting part between the liquid containing flow channel and the adjacent force applying cavity are respectively located on both sides of the two pistons in the liquid containing flow channel; The adjusting ring is threadedly connected to a side of the sealing ring close to the mounting ring, and the limiting ring is used to limit the distance that the adjusting ring can move when the extrusion frame moves downward.

[0011] Furthermore, it also includes: Two adjusting nuts are both threadedly connected to the support frame, the support frame is slidably connected to the support, and the two adjusting nuts are both in contact with the support and are respectively located on both sides of the support.

[0012] Furthermore, it also includes: The friction arc strip is fixed to the support frame, and the extrusion frame is rotatably connected with a transmission shaft and a power shaft. The transmission shaft and the adjacent extrusion rollers are transmitted through a transmission member, and the transmission shaft and the adjacent power shaft are transmitted through a universal joint. The power shaft is transmitted to the friction arc strip through a friction wheel.

[0013] Furthermore, the squeezing roller is fixedly connected with two elastic rings, the elastic rings are located between the squeezing roller and the adjacent flexible tube, and the elastic rings are used to maintain the shape of the flexible tube.

[0014] In general, compared with the prior art, the above technical solution conceived by the present invention can achieve the following beneficial effects: the present invention detects the strength of insulators by reciprocating multiple detection units and squeezing the middle part of the supports at both ends of the insulator, thereby realizing continuous and automatic detection of insulators, saving operating procedures and improving detection efficiency.

[0015] The pressure in the force-applying chamber is used to apply extrusion pressure to the side of the insulator through a flexible tube. Based on the principle of equal pressure in the same chamber, equal extrusion pressure is applied to various locations on the same side of the insulator through the flexible tube. At the same time, the strength of multiple locations of the insulator under the same extrusion pressure is checked, and the microscopic defects inside the insulator are checked, so as to detect the insulator and enhance the reliability of the test results.

[0016] The support block and the flexible belt are used to provide support for the insulator, so as to increase the contact area of ​​the device when supporting the insulator, reduce the probability of stress concentration on the insulator caused by the support block, and improve the accuracy of the insulator strength test result.

[0017] The friction transmission insulator is rotated around its central axis, so that the flexible tube contacts different positions of the insulator, and the insulator is tested in all directions, thereby improving the reliability of the insulator strength test. 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 cross-sectional view of the support and the mounting ring of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the mounting ring and the mounting frame of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the extrusion frame and the extrusion roller of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the squeezing roller and the elastic ring of the present invention; Figure 6 It is a three-dimensional structural cross-sectional view of the squeezing roller and the flexible tube of the present invention; Figure 7It is a schematic diagram of the three-dimensional structure of the T-shaped frame and the support block of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the limiting ring and the sealing ring of the present invention; Fig. 9 It is a three-dimensional structural cross-sectional view of the sealing ring and the adjusting ring of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the support frame and the friction arc strip of the present invention.

[0019] The names and serial numbers of the parts in the figure are: 1-support, 2-mounting ring, 3-motor, 4-support frame, 401-adjusting nut, 5-guide frame, 6-mounting frame, 7-extrusion frame, 8-extrusion roller, 801-liquid flow channel, 9-flexible cylinder, 901-force chamber, 10-piston, 11-T-shaped frame, 12-support block, 121-flexible belt, 13-tensioning block, 131-adjusting knob, 14-limiting ring, 141-accommodating chamber, 142-ring groove, 15-sealing ring, 151-adjusting ring, 16-friction arc strip, 161-transmission shaft, 162-power shaft, 17-elastic ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] A strength testing device for insulator production, see Figure 1-Figure 4 , including: a support 1, the support 1 is rotatably connected to a mounting ring 2, the support 1 is installed with a motor 3, the output shaft of the motor 3 is transmitted to the mounting ring 2 through a gear set; a support frame 4, arranged on the support 1, the support frame 4 is fixedly connected to a guide frame 5; a number of detection units, all arranged on the mounting ring 2, for detecting the strength of the insulator, the detection unit includes: a mounting frame 6, fixedly connected to the mounting ring 2, the mounting frame 6 is limited and sealed and slidably connected to an extrusion frame 7, a first spring is fixedly connected between the extrusion frame 7 and the mounting ring 2, the side of the guide frame 5 close to the support 1 is in contact with the extrusion frame 7 and is used to guide the movement of the extrusion frame 7; an extrusion assembly, arranged on the extrusion frame 7, for applying multi-point and uniform extrusion force to the middle part of the insulator; a support assembly, arranged on the mounting ring 2, for supporting both ends of the insulator; the guide frame 5 is formed by sequentially connecting a guide portion, a transition portion, an extrusion portion and a connecting block, and the height of the guide portion of the guide frame 5 is greater than the height of the extrusion portion thereon.

[0022] In the above scheme, it is intended to solve the problem that when testing insulators, it is necessary to fix them one by one and then test them individually, which results in complicated operation process and low testing efficiency. In this scheme, multiple testing units are rotated back and forth and the strength is tested by squeezing the middle of the supports at both ends of the insulator, thereby realizing continuous and automatic testing of the insulator, saving the operation process and improving the testing efficiency. The support 1 is formed by connecting the three-branch support leg and the disc by bolts. The central axes of the support 1, the mounting ring 2 and the support frame 4 are in the same line. In the clockwise direction (hereinafter referred to as the attached Figure 1 The top view is a rotating perspective), the guide portion, transition portion, extrusion portion and connection block of the guide frame 5 are connected in sequence; the feeding position and unloading position of the device are both located at the position corresponding to the guide portion of the guide frame 5 (attached Figure 1 The left side of the mounting ring 2 is the feeding position, and the left front of the mounting ring 2 is the unloading position); the number of detection units can be adjusted according to actual conditions. In this article, there are six detection units; the elastic force of the first spring between the extrusion frame 7 and the mounting ring 2 is greater than the total weight of the extrusion frame 7 and the extrusion assembly thereon.

[0023] See also Figure 3-Figure 6 The extrusion assembly includes: an extrusion roller 8, which is rotatably connected to the extrusion frame 7, a liquid flow channel 801 is arranged in the extrusion roller 8, and a flexible tube 9 is fixedly connected to the extrusion roller 8, and the two together form a force-applying chamber 901 connected to the liquid flow channel 801; two pistons 10, which are both sealed and slidably connected in the liquid flow channel 801, and a second spring is fixedly connected between the two pistons 10; an adjustment assembly is arranged in the extrusion frame 7, and is used to adjust the pressure in the force-applying chamber 901 when the flexible tube 9 extrudes the insulator.

[0024] In the above scheme, the pressure in the force-applying chamber 901 is used to apply an extrusion pressure to the side of the insulator through the flexible tube 9. Based on the principle of equal pressure in the same chamber, equal extrusion pressure is applied to various locations on the same side of the insulator through the flexible tube 9. At the same time, the strength of multiple positions of the insulator under the same extrusion pressure is checked, and the microscopic defects inside the insulator are checked, so as to detect the insulator and enhance the reliability of the detection results; the flexible tube 9 has the characteristics of flexibility and low elasticity (here the flexible tube 9 is a double-layer structure, the inner layer of which is a liquid capsule, and the outer layer is a cloth woven from polypropylene flat wire); liquid medium (here hydraulic oil is selected) is stored in the liquid flow channel 801 and the force-applying chamber 901.

[0025] See also Figure 3 , Figure 4 and Figure 7The support assembly includes: two T-shaped frames 11, both fixed to the mounting ring 2 near the mounting frame 6, the T-shaped frame 11 is limitedly slidably connected to two support blocks 12, and the support blocks 12 are used to support the insulator; the T-shaped frame 11 is slidably connected to a tension block 13, and a tension spring is fixed between the two, and the tension block 13 and the two support blocks 12 on the same T-shaped frame 11 are jointly wound with a flexible belt 121; the T-shaped frame 11 is threadedly connected to an adjusting knob 131, and the adjusting knob 131 is used to limit the moving range of adjacent tension blocks 13.

[0026] In the above scheme, the support block 12 and the flexible belt 121 are used to provide support for the insulator, so as to increase the contact area of ​​the device when supporting the insulator, reduce the probability of stress concentration in the insulator caused by the support block 12, and improve the accuracy of the insulator strength test results; the tension of the tension spring on the tension block 13 is less than the gravity of the insulator, so that after the insulator is placed between the two support blocks 12, the insulator can squeeze the two support blocks 12 to both sides under the action of its own weight, so that the insulator "sinks" between the two support blocks 12, and the two support blocks 12 are used to position the insulator so that the central axis of the insulator and the central axis of the flexible tube 9 above it are located in the same vertical plane.

[0027] See also Figure 8 and Fig. 9 The adjusting component includes: a limit ring 14, which is fixedly connected to the adjacent mounting frame 6. The extrusion frame 7 is provided with a mutually communicating accommodating chamber 141 and an annular groove 142. A sealing ring 15 which is sealed and slidably connected to the mounting frame 6 is provided in the accommodating chamber 141. The liquid flow channel 801 is communicated with the adjacent annular groove 142. The connecting part between the liquid flow channel 801 and the adjacent annular groove 142 and the connecting part between the liquid flow channel 801 and the adjacent force-applying chamber 901 are respectively located on both sides of the two pistons 10 in the liquid flow channel 801; an adjusting ring 151, which is threadedly connected to the side of the sealing ring 15 close to the mounting ring 2. The limit ring 14 is used to limit the distance that the adjusting ring 151 can move when the extrusion frame 7 moves downward.

[0028] In the above scheme, the purpose is to use the moving distance of the sealing ring 15 to control the elastic force of the second spring on the piston 10, and then control the pressure in the force-applying chamber 901, so as to achieve the purpose of adjusting the extrusion force applied by the flexible tube 9 to the insulator; hydraulic oil is stored in the accommodating chamber 141 and the annular groove 142; a card slot is opened on the lower side of the adjusting ring 151, and the user can use a tool to rotate the adjusting ring 151.

[0029] The working principle of the above scheme is as follows: during the insulator production process, the left side of the device is connected to the insulator production line, and the left front of the device is connected to the subsequent part of the production line (such as packaging and other processes). When the insulator is tested, the motor 3 is started, and the output shaft of the motor 3 drives the mounting ring 2 to rotate intermittently clockwise through the gear set, and a single rotation is 60°. The mounting ring 2 drives the detection unit thereon to rotate intermittently circumferentially, and at the same time, the rotation speed of the mounting ring 2 is matched with the conveying speed of the insulator on the production line. After the insulator is placed in the detection unit on the left, the mounting ring 2 drives the detection unit to rotate, so that the new detection unit corresponds to the feeding position and stops rotating. As the new insulator is placed in the detection unit, the mounting ring 2 continues to rotate to replace the detection unit corresponding to the feeding position, thereby realizing the continuous strength detection of the insulator.

[0030] After the insulator is placed in the detection unit, the steps for strength testing of the insulator are as follows (the detection unit on the left is used as an example for explanation): the insulator is separated from the production line and moved between the two T-shaped frames 11, and the two ends of the insulator are respectively placed on two flexible belts 121. The insulator presses the part of the flexible belt 121 between the two adjacent support blocks 12 downward, and at the same time presses the four support blocks 12 to the left and right sides respectively. The support block 12 always slides along the side of the end of the insulator. In this process, the flexible belt 121 pulls the adjacent tensioning block 13 to move upward, and stretches the tensioning block 13. Spring, finally the tensioning block 13 contacts the adjacent adjusting knob 131 and stops moving (before testing the insulator, the user turns the adjusting knob 131 according to the specifications of the insulator to be tested, adjusts the distance between the adjusting knob 131 and the adjacent tensioning block 13, and then controls the area of ​​the insulator end wrapped by the flexible belt 121), so that the support block 12, the flexible belt 121 and the tensioning block 13 stop moving, the insulator stops moving downward, and at this time the central axis of the insulator is above the central axis of the four support blocks 12, so that the insulator is supported by the four support blocks 12 and the flexible belt 121 and remains stationary.

[0031] After the tension block 13 contacts the adjacent adjustment knob 131, the output shaft of the motor 3 drives the mounting ring 2 to rotate 60° clockwise through the gear set, and the mounting ring 2 drives the insulator to rotate circumferentially through the T-shaped frame 11, the support block 12 and the flexible belt 121. During the rotation, the extrusion frame 7 gradually loses contact with the guide portion of the guide frame 5 and begins to slide along the transition portion of the guide frame 5, so that the extrusion frame 7 drives the extrusion roller 8 and the flexible cylinder 9 to move downward together, compressing the first spring of the extrusion frame 7, and the distance between the flexible cylinder 9 and the insulator below it gradually increases. It gradually decreases until the flexible tube 9 contacts the insulator and is deformed under the extrusion of the insulator. The deformation of the flexible tube 9 reduces the volume of the force-applying chamber 901, and the excess hydraulic oil in the force-applying chamber 901 enters the front part of the liquid-containing flow channel 801 and pushes the front piston 10 to move backward, compressing the second spring between the two pistons 10; after the mounting ring 2 rotates 60°, the extrusion frame 7 detaches from the transition part of the guide frame 5 and contacts its extrusion part, at which point the extrusion frame 7 stops moving downward, and the lower side of the flexible tube 9 is squeezed by the insulator to form a wavy depression.

[0032] Before conducting a strength test on the insulator, the user rotates the adjustment ring 151 according to the actual stress conditions of the insulator during use, adjusts the length of the adjustment ring 151 protruding from the sealing ring 15, changes the distance the sealing ring 15 moves, and further changes the degree of volume change of the hydraulic oil in the accommodating chamber 141, so that after the extrusion frame 7 stops moving downward, the compression amount of the second spring of the piston 10 changes, thereby ultimately achieving the purpose of changing the hydraulic oil pressure in the force-applying chamber 901.

[0033] During the downward movement of the extrusion frame 7, the extrusion frame 7 drives the sealing ring 15 to move downward, so that the distance between the sealing ring 15 and the adjacent limiting ring 14 is gradually reduced, and then the adjusting ring 151 contacts the limiting ring 14, and the sealing ring 15 and the adjusting ring 151 stop moving downward under the limit of the limiting ring 14. As the extrusion frame 7 continues to move downward, the sealing ring 15 squeezes the hydraulic oil in the accommodating chamber 141 through the annular groove 142 into the rear part of the liquid-containing flow channel 801, so that the volume of the hydraulic oil in the rear part of the liquid-containing flow channel 801 increases and pushes the piston at the rear side. 10 moves forward, and continues to compress the second spring between the two pistons 10, so that the reaction force of the second spring on the piston 10 increases, and then the pressure of the hydraulic oil in the force-applying chamber 901, the liquid-containing flow channel 801, the accommodating chamber 141 and the annular groove 142 increases together, thereby increasing the downward squeezing force of the flexible tube 9 on the insulator, and applying equal squeezing pressure to multiple positions on the upper side of the insulator through the hydraulic oil in the force-applying chamber 901, and at the same time, strength tests are performed on multiple positions of the insulator, thereby improving the reliability of the insulator strength test results.

[0034] After the extrusion frame 7 stops moving downward, as the mounting ring 2 rotates, the extrusion frame 7 remains stationary under the extrusion of the guide frame 5, and the insulator is always subjected to the extrusion force applied by the hydraulic oil in the force-applying chamber 901 through the flexible tube 9. If there are microscopic defects inside the insulator, the insulator will break after being squeezed. At this time, the insulator will fall from between the two T-shaped frames 11 or remain stuck between the T-shaped frames 11. If the insulator falls after breaking, the insulator loses contact with the support block 12 and the flexible belt 121, and the support block 12 and the flexible belt 121 are in contact with each other. 21 and the tensioning block 13 are reset under the action of the tension spring on the tensioning block 13; if the insulator does not fall after breaking, the broken insulator is collected onto the production line by a tool while waiting for the insulator to move to the unloading position, and the broken insulator is removed in the subsequent links of the production line; if the insulator strength is qualified, the insulator rotates 240° circumferentially with the mounting ring 2, and as the mounting ring 2 continues to rotate, the extrusion frame 7 gradually moves to the end of the extrusion portion of the guide frame 5, and then the extrusion frame 7 moves up under the action of the first spring and contacts with the guide portion of the guide frame 5.

[0035] During the upward movement of the extrusion frame 7, the sealing ring 15 and the adjusting ring 151 first remain stationary under the action of the hydraulic oil pressure in the accommodating chamber 141. During this process, the hydraulic oil that originally entered the rear of the liquid-containing flow channel 801 flows back into the accommodating chamber 141 through the annular groove 142, and the second spring of the piston 10 gradually resets. When the sealing ring 15 moves to the lowermost side of the accommodating chamber 141, the sealing ring 15 and the adjusting ring 151 reset relative to the extrusion frame 7. Subsequently, the extrusion frame 7 continues to move upward and drives the sealing ring 15 and the adjusting ring 151 upward, so that the adjusting ring 151 loses contact with the limit ring 14; when the extrusion frame 7 moves upward, it drives the extrusion roller 8 and the flexible tube 9 to move upward together, and the flexible tube 9 gradually loses contact with the insulator. At the same time, the flexible cylinder 9 recovers its shape under the pressure of the hydraulic oil in the force chamber 901, so that the second spring of the piston 10 recovers, and the two pistons 10 are reset relative to the extrusion frame 7. The pressure of the hydraulic oil in the force chamber 901 recovers, and then the mounting ring 2 stops rotating (the mounting ring 2 rotates 300° in total), and the insulator is located at the unloading position of the device. At this time, the insulator is moved to the production line by a tool, so that the insulator loses contact with the flexible belt 121, and the support block 12, the flexible belt 121 and the tension block 13 are reset under the action of the tension spring on the tension block 13. Then the mounting ring 2 continues to rotate intermittently to detect the insulators on the production line until the detection of the insulators is completed, and the motor 3 is stopped.

[0036] See also Figure 2 , and also includes: two adjusting nuts 401, both of which are threadedly connected to the support frame 4, the support frame 4 is slidably connected to the support 1, and the two adjusting nuts 401 are in contact with the support 1 and are respectively located on both sides of the support 1.

[0037] In the above scheme, the purpose is to improve the specification range of insulators that can be detected by the device by adjusting the position of the support frame 4; the steps of adjusting the specifications of insulators applicable to the device are as follows: when the diameter of the insulator to be detected is small, the user can use two methods to make the device adapt to the diameter change of the insulator. One is: use a tool to rotate the upper adjustment nut 401 upward, and then move the support frame 4 downward, so that the support frame 4 moves downward relative to the support 1, the support frame 4 drives the guide frame 5 to move downward, and the guide frame 5 squeezes all the extrusion frames 7 downward, so that the lowest point that the extrusion frames 7 can move under the guidance of the guide frame 5 is lowered, such as This adapts to the situation where the insulator diameter becomes smaller, and finally the user tightens the two adjusting nuts 401; secondly: the user rotates the adjusting knob 131 to move the adjusting knob 131 downward relative to the T-shaped frame 11, thereby reducing the range of movement of the tensioning block 13, and further reducing the range of movement of the support block 12. In this way, the insulator is supported by the support block 12, so that the height of the central axis of the insulator and the central axis of the adjacent support block 12 in the vertical direction is increased, thus adapting to the situation where the insulator diameter is reduced; if the insulator diameter increases relative to the diameter of the insulator batch detected last time, repeat the above steps in reverse.

[0038] See also Figure 1 , Figure 5 , Figure 6 and Fig.10 , also includes: a friction arc strip 16, fixedly connected to the support frame 4, the extrusion frame 7 is rotatably connected with a transmission shaft 161 and a power shaft 162, the transmission shaft 161 and the adjacent extrusion roller 8 are transmitted through a transmission member, the transmission shaft 161 and the adjacent power shaft 162 are transmitted through a universal joint, and the power shaft 162 is transmitted through a friction wheel and the friction arc strip 16; the extrusion roller 8 is fixedly connected with two elastic rings 17, the elastic ring 17 is located between the extrusion roller 8 and the adjacent flexible tube 9, and the elastic ring 17 is used to maintain the shape of the flexible tube 9.

[0039] In the above scheme, the friction transmission insulator is intended to rotate around its central axis, so that the flexible tube 9 contacts different positions of the insulator, performs all-round detection of the insulator, and improves the reliability of the insulator strength detection; the elastic ring 17 can be made of elastic rubber; the transmission member between the transmission shaft 161 and the adjacent extrusion roller 8 can be a bevel gear set or a friction wheel set, which can be adjusted by the user according to actual conditions; the elastic ring 17 is fixed to the inner side of the adjacent flexible tube 9 by glue or the like, and when the flexible tube 9 is deformed, the flexible tube 9 drives the adjacent elastic ring 17 to deform together; the friction arc strip 16 is located below the extrusion portion of the guide frame 5, and the center of the circle where the friction arc strip 16 is located is located on the central axis of the mounting ring 2, when the extrusion frame 7 contacts the extrusion portion of the guide frame 5, the friction wheel of the power shaft 162 contacts the friction arc strip 16, and when the extrusion frame 7 loses contact with the extrusion portion of the guide frame 5 and contacts its guide portion, the friction wheel of the power shaft 162 loses contact with the friction arc strip 16.

[0040] The working principle of the above scheme is as follows: after the insulator is placed on the detection unit, as the mounting ring 2 rotates 60°, the flexible tube 9 contacts the insulator and applies an extrusion force to it, and as the mounting ring 2 continues to rotate, the mounting ring 2 drives the transmission shaft 161 and the power shaft 162 to rotate circumferentially through the extrusion frame 7, and the friction wheel on the power shaft 162 gradually contacts the upper side of the friction arc strip 16, and as the power shaft 162 rotates circumferentially, the power shaft 162 and the friction wheel rotate under the action of the friction force between the friction arc strip 16, and the power shaft 162 drives the transmission shaft 161 to rotate through the universal joint, and the transmission shaft 161 drives the extrusion roller 8 to rotate through the bevel gear set, and the extrusion roller 8 drives the flexible tube 9 to rotate through the two elastic rings 17 thereon, and the flexible tube 9 drives the insulator to rotate through the friction force between it and the insulator (during the rotation of the insulator, the insulator drives the flexible belt 121 to rotate), thereby changing the contact position of the flexible tube 9 and the insulator.

[0041] As the mounting ring 2 drives the insulator to rotate 240° circumferentially, while the mounting ring 2 continues to drive the insulator to rotate circumferentially, the friction wheel of the power shaft 162 moves to the end of the friction arc bar 16 and loses contact with the friction arc bar 16. At this time, the extrusion frame 7 moves to the end of the extrusion part of the guide frame 5, and the above-mentioned step of moving the extrusion frame 7 upward is repeated to complete the strength test of the insulator.

[0042] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A strength testing device for insulator production, characterized in that: include: A support (1), the support (1) being rotatably connected to a mounting ring (2), the support (1) being mounted with a motor (3), the output shaft of the motor (3) being transmitted to the mounting ring (2) via a gear set; A support frame (4) is arranged on the support seat (1), and the support frame (4) is fixedly connected to a guide frame (5); A plurality of detection units are arranged on the mounting ring (2) and are used to detect the strength of the insulator, the detection units comprising: A mounting frame (6) is fixedly connected to the mounting ring (2); the mounting frame (6) is limited in position and sealingly slidably connected to an extrusion frame (7); a first spring is fixedly connected between the extrusion frame (7) and the mounting ring (2); a side of the guide frame (5) close to the support (1) contacts the extrusion frame (7) and is used to guide the movement of the extrusion frame (7); An extrusion assembly, arranged on the extrusion frame (7), and used to apply a multi-point and uniform extrusion force to the middle of the insulator; A support assembly is arranged on the mounting ring (2) and is used to support the two ends of the insulator.

2. The strength testing equipment for insulator production according to claim 1, characterized in that: The guide frame (5) is formed by sequentially connecting a guide portion, a transition portion, an extrusion portion and a connection block, and the height of the guide portion of the guide frame (5) is greater than the height of the extrusion portion thereon.

3. The strength testing equipment for insulator production according to claim 1, characterized in that: The extrusion assembly comprises: An extrusion roller (8) is rotatably connected to the extrusion frame (7), a liquid flow channel (801) is provided in the extrusion roller (8), and the extrusion roller (8) is fixedly connected to a flexible tube (9), and the two together form a force-applying chamber (901) in communication with the liquid flow channel (801); Two pistons (10) are both sealed and slidably connected in the liquid containing channel (801), and a second spring is fixedly connected between the two pistons (10); An adjustment component is arranged in the extrusion frame (7) and is used to adjust the pressure in the force-applying cavity (901) when the flexible cylinder (9) extrudes the insulator.

4. The strength testing equipment for insulator production according to claim 1, characterized in that: The support assembly comprises: Two T-shaped frames (11) are both fixedly connected to the mounting ring (2) at a position close to the mounting frame (6); the T-shaped frames (11) are limitedly slidably connected to two support blocks (12); the support blocks (12) are used to support insulators.

5. The strength testing equipment for insulator production according to claim 4, characterized in that: The T-shaped frame (11) is slidably connected to a tension block (13), and a tension spring is fixedly connected between the two. The tension block (13) and the two support blocks (12) on the same T-shaped frame (11) are jointly wrapped with a flexible belt (121).

6. The strength testing equipment for insulator production according to claim 5, characterized in that: The T-shaped frame (11) is threadedly connected with an adjusting knob (131), and the adjusting knob (131) is used to limit the movement range of the adjacent tensioning block (13).

7. The strength testing equipment for insulator production according to claim 3, characterized in that: The adjustment component comprises: a limiting ring (14) fixedly connected to the adjacent mounting frame (6); a receiving chamber (141) and an annular groove (142) communicating with each other are provided in the extrusion frame (7); a sealing ring (15) sealingly and slidably connected to the mounting frame (6) is provided in the receiving chamber (141); the liquid containing flow channel (801) is communicated with the adjacent annular groove (142); the connecting point between the liquid containing flow channel (801) and the adjacent annular groove (142) and the connecting point between the liquid containing flow channel (801) and the adjacent force applying chamber (901) are respectively located on both sides of the two pistons (10) in the liquid containing flow channel (801); An adjusting ring (151) is threadedly connected to a side of the sealing ring (15) close to the mounting ring (2), and the limiting ring (14) is used to limit the distance that the adjusting ring (151) can move when the extrusion frame (7) moves downward.

8. The strength testing equipment for insulator production according to claim 1, characterized in that: Also includes: Two adjusting nuts (401) are both threadedly connected to the support frame (4), the support frame (4) is slidably connected to the support (1), and the two adjusting nuts (401) are both in contact with the support (1) and are respectively located on both sides of the support (1).

9. The strength testing equipment for insulator production according to claim 3, characterized in that: Also includes: The friction arc strip (16) is fixedly connected to the support frame (4); the extrusion frame (7) is rotatably connected to a transmission shaft (161) and a power shaft (162); the transmission shaft (161) and the adjacent extrusion roller (8) are transmitted via a transmission member; the transmission shaft (161) and the adjacent power shaft (162) are transmitted via a universal joint; the power shaft (162) and the friction arc strip (16) are transmitted via a friction wheel.

10. The strength testing equipment for insulator production according to claim 9, characterized in that: The squeezing roller (8) is fixedly connected to two elastic rings (17), the elastic rings (17) being located between the squeezing roller (8) and the adjacent flexible tube (9), and the elastic rings (17) being used to maintain the shape of the flexible tube (9).

Images