A high voltage porcelain multi-station automatic four-way bending and torsion testing machine

Abstract

The present invention discloses a high-voltage insulator multi-station automatic four-way bending and torsion testing machine, which relates to the field of high-voltage insulator bending and torsion testing, and comprises a base, a support frame is arranged on the top of the base, the base is in a circular ring shape and is equidistantly arranged with four bending stations and one torsion station, the bending station is provided with a bending test unit that provides a horizontal test force, the torsion station is provided with a torsion test unit that provides a torsion test force, and the bending test unit and the torsion test unit both include a receiving seat rotatably connected to the base. The high-voltage insulator multi-station automatic four-way bending and torsion testing machine, by providing a suspension, and respectively providing load-bearing blocks and drive gears and other structures at both ends thereof, can facilitate the transportation, installation and removal of insulators during the test process, and, with the cooperation of a fixing mechanism, can self-fix the insulators after they are placed, thereby making the testing of the insulators more convenient and efficient.

Description

Technical Field

[0001] The invention relates to a high-voltage insulator anti-bending and torsion testing technology, and in particular to a high-voltage insulator multi-station automatic four-way bending and torsion testing machine. Background Art

[0002] High-voltage porcelain insulators are an indispensable key component in power transmission lines. They can not only provide electrical insulation, support conductors, and resist external environmental influences, but also improve system stability, ensuring safe, stable and continuous power transmission. Therefore, the quality of high-voltage porcelain insulators greatly affects the working state of power transmission lines.

[0003] Since high-voltage porcelain insulators are greatly affected by external wind at high altitudes, they may be subjected to lateral external forces or torsional forces under the blowing of external wind. Therefore, in order to make the insulators meet the needs of the actual application environment, they need to be subjected to bending and torsion tests during their production process.

[0004] The multi-station automatic four-way bending and torsion testing machine is a commonly used testing equipment in the production process of high-voltage porcelain insulators. Through the multi-station setting, it can simultaneously perform bending tests and torsion tests on multiple groups of insulators, making the testing efficiency of the insulators higher. However, in the actual operation process, due to the heavy weight of the high-voltage porcelain insulators, when installing them, they need to be lifted by the sling mechanism set above the equipment, and then the operator needs to correct the installation position. After the test, they need to be lifted and removed again by the sling mechanism, which makes the testing process of high-voltage porcelain insulators more inconvenient. Summary of the invention

[0005] The object of the present invention is to provide a high voltage insulator multi-station automatic four-way bending and torsion testing machine to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-voltage porcelain multi-station automatic four-way bending and torsion testing machine, comprising a base, a support frame is arranged on the top of the base, the base is in a circular ring shape and four bending stations and one torsion station are arranged in sequence and equidistantly, the bending station is provided with a bending test unit that provides a horizontal test force, the torsion station is provided with a torsion test unit that provides a torsion test force, the bending test unit and the torsion test unit both include a receiving seat rotatably connected to the base, the top of the receiving seat is provided with a receiving groove, an insulator to be tested is installed on the receiving seat through the receiving groove, the top and bottom of the insulator to be tested are provided with short columns, the ends of the short columns are provided with convex disks, and the surfaces of the convex disks are provided with positioning grooves;

[0007] The support frame is provided with a suspension on the outside, and a guide groove is provided at the bottom of the suspension, and load-bearing blocks are slidably connected at both ends of the guide groove. A guide rack is provided on the side of the inner wall of the guide groove, and the inner side surface of the load-bearing block is rotatably connected with a driving gear, and the driving gear is driven by a motor, and the driving gear is meshed with the guide rack. A lifting cylinder is fixedly connected to the bottom of the load-bearing block, and a clamping seat is fixedly connected to the bottom of the lifting cylinder. A driving groove is provided at the bottom of the clamping seat, and a bidirectional screw is rotatably connected to the inner side surface of the driving groove, and movable blocks are symmetrically threaded at both ends of the bidirectional screw, and a clamping support plate is provided at the bottom of the movable block;

[0008] The receiving seat is provided with a fixing mechanism, and the fixing mechanism is used to fix the insulator to be tested.

[0009] Furthermore, the bending test unit comprises a height-adjustable mounting seat, the inner side surface of the mounting seat is slidably connected with a test push rod, and the test push rod is driven by a test cylinder to move in a horizontal direction;

[0010] The torsion test unit comprises a height-adjustable lifting seat, the top of which is slidably connected with a moving seat, the moving seat is driven by an adjusting cylinder to perform linear motion along the surface of the lifting seat, and an upper fixed plate is installed at the bottom of the moving seat.

[0011] Furthermore, the receiving seat is driven by a motor, and the motor drives the receiving seat located at the anti-bending position so that a single rotation angle is 90°.

[0012] Furthermore, the suspension includes an arc segment, and a loading straight segment and a unloading straight segment are respectively provided at both ends of the arc segment. The shape and specification of the arc segment are compatible with the distribution trajectory of the anti-bending station and the anti-torsion station.

[0013] Furthermore, a limiting guide groove is provided at the bottom of the clamping seat, and the inner side surface of the limiting guide groove is slidably connected to a limiting guide block, the limiting guide block is T-shaped, the limiting guide block is fixedly connected to a clamping support plate, the clamping support plate is L-shaped, and the clamping end of the clamping support plate is arranged in an arc shape.

[0014] Furthermore, a limiting block is fixedly connected to the bottom of the load-bearing block, a through groove is opened on the surface of the clamping seat, the limiting block is slidably connected to the inner side surface of the through groove, and when the lifting cylinder drives the clamping pallet to move upward to the end of the stroke, the distance value between the surfaces of the clamping pallet and the limiting block facing each other is adapted to the thickness value of the convex plate.

[0015] Furthermore, ball grooves are provided at the top and bottom of the inner wall of the driving groove, the shape of the ball grooves is consistent with the suspension, and balls are provided at the top and bottom of the load-bearing block, and the shape and specifications of the ball grooves are compatible with the balls.

[0016] Furthermore, the fixing mechanism includes a supporting spring fixedly connected to the bottom of the receiving groove, the top of the supporting spring is fixedly connected to a bottom plate, the outer side surface of the bottom plate is annularly equidistantly rotatably connected to four connecting rods, the interior of the receiving seat is provided with an active cavity corresponding to the connecting rod, the top and bottom of the active cavity are respectively slidably connected to an upper rack and a lower rack, the interior of the active cavity is rotatably connected to a transmission gear, the end of the upper rack close to the receiving groove is fixedly connected to a limiting clamping plate, the end of the limiting clamping plate close to the receiving groove is provided with an arc clamping groove, the inner side surface of the limiting clamping plate is circularly rotatably connected to a plurality of limiting wheels, the external anti-slip device of the limiting wheel, the top of the bottom plate and the bottom of the upper fixed plate are fixedly connected to positioning columns adapted to the positioning grooves.

[0017] Furthermore, one end of the connecting rod away from the base plate is rotatably connected to the lower rack, and the upper rack and the lower rack are respectively meshed with the upper and lower ends of the transmission gear, and horizontal guide bars are provided on both sides of the upper rack and the lower rack, and the inner side surface of the movable cavity is provided with a horizontal groove corresponding to the horizontal guide bar.

[0018] Furthermore, the limiting wheel is vertically arranged, and the limiting wheel is close to one end of the circular arc clamping groove and extends into the interior of the circular arc clamping groove.

[0019] Compared with the prior art, the high-voltage porcelain multi-station automatic four-way bending and torsion testing machine provided by the present invention has the following beneficial effects:

[0020] 1. The high-voltage porcelain multi-station automatic four-way bending and torsion testing machine is equipped with a suspension, and load-bearing blocks and driving gears and other structures at both ends. It can facilitate the transportation, installation and removal of insulators during the test process. In addition, with the cooperation of the fixing mechanism, the insulators can be self-fixed after being placed, making the testing of insulators more convenient and efficient.

[0021] 2. This high-voltage porcelain multi-station automatic four-way bending and torsion testing machine can limit the swing of the insulator to be tested during transportation through the cooperation between the limiting block and the clamping support plate, so that it can be positioned and installed more efficiently after it arrives at the designated station.

[0022] 3. This high-voltage porcelain multi-station automatic four-way bending and torsion testing machine uses the contact between the ball and the bottom of the ball groove instead of the direct contact between the load-bearing block and the bottom of the inner wall of the guide groove, so that the friction resistance of the load-bearing block during movement is greatly reduced, which not only reduces the wear of the load-bearing block during operation, but also effectively reduces the input of the driving source of the driving gear, making the transportation process of the insulator smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of a partial cross-sectional structure of a base provided in an embodiment of the present invention;

[0026] Figure 3 The embodiment of the present invention provides Figure 2 The middle part of the structure is enlarged and schematically shown;

[0027] Figure 4 The embodiment of the present invention provides Figure 3 The enlarged structural diagram at A in the middle;

[0028] Figure 5 A schematic diagram of a partial cross-sectional structure of a suspension provided by an embodiment of the present invention;

[0029] Figure 6 The embodiment of the present invention provides Figure 5 The middle part of the structure is enlarged and schematically shown;

[0030] Figure 7 A schematic diagram of the structure of the load-bearing block and the clamping seat provided in an embodiment of the present invention;

[0031] Figure 8 A schematic diagram of a partial cross-sectional structure of a clamping seat provided in an embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 1. Base; 101. Anti-bending station; 102. Anti-torsion station; 103. Support frame; 2. Receiver; 21. Receiver slot; 22. Short column; 23. Convex plate; 24. Positioning slot; 3. Suspension; 301. Arc section; 302. Straight section for loading; 303. Straight section for unloading; 31. Guide slot; 32. Load-bearing block; 33. Guide rack; 34. Driving gear; 35. Lifting cylinder; 36. Clamping seat; 37. Driving slot; 38. Bidirectional screw; 39. Movable block; 310. Clamping pallet; 311. 1. Limit guide groove; 312. Limit guide block; 4. Mounting seat; 41. Test push rod; 5. Lifting seat; 51. Moving seat; 52. Upper fixed plate; 6. Limit block; 61. Through groove; 7. Ball groove; 71. Ball; 8. Support spring; 81. Bottom plate; 82. Connecting rod; 83. Movable cavity; 84. Upper rack; 85. Lower rack; 86. Transmission gear; 87. Limiting clamp; 88. Arc clamp groove; 89. Limiting wheel; 810. Positioning column; 811. Horizontal guide bar; 812. Horizontal groove. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] Embodiment 1:

[0036] See also Figure 1-Figure 8 A high-voltage insulator multi-station automatic four-way bending and torsion testing machine comprises a base 1, a support frame 103 is arranged on the top of the base 1, the base 1 is annular and has four bending stations 101 and one torsion station 102 equidistantly arranged in sequence, the bending station 101 is provided with a bending test unit providing a horizontal test force, the torsion station 102 is provided with a torsion test unit providing a torsion test force, the bending test unit and the torsion test unit both comprise a receiving seat 2 rotatably connected to the base 1, a receiving groove 21 is provided on the top of the receiving seat 2, an insulator to be tested is installed on the receiving seat 2 through the receiving groove 21, short columns 22 are provided on the top and bottom of the insulator to be tested, and convex discs 23 are provided at the ends of the short columns 22, the shape and size of the convex discs 23 are adapted to the receiving grooves 21, and positioning grooves 24 are provided on the surfaces of the convex discs 23;

[0037] A suspension 3 is provided on the outside of the support frame 103, a guide groove 31 is provided at the bottom of the suspension 3, a load-bearing block 32 is slidably connected to both ends of the guide groove 31, a guide rack 33 is provided on the side of the inner wall of the guide groove 31, the inner side surface of the load-bearing block 32 is rotatably connected to a driving gear 34, the driving gear 34 is driven by a motor, and the driving gear 34 is meshed with the guide rack 33, a lifting cylinder 35 is fixedly connected to the bottom of the load-bearing block 32, a clamping seat 36 is fixedly connected to the bottom of the lifting cylinder 35, a driving groove 37 is provided at the bottom of the clamping seat 36, a bidirectional screw 38 is rotatably connected to the inner side surface of the driving groove 37, a movable block 39 is symmetrically threadedly connected to both ends of the bidirectional screw 38, and a clamping support plate 310 is provided at the bottom of the movable block 39;

[0038] The receiving seat 2 is provided with a fixing mechanism, which is used to fix the insulator to be tested.

[0039] It should be supplemented that the bending test unit includes a height-adjustable mounting seat 4, the inner side surface of the mounting seat 4 is slidably connected with a test push rod 41, the test push rod 41 is driven by a test cylinder to move horizontally, and a thrust measuring unit is arranged at the end of the test push rod 41; the torsion test unit includes a height-adjustable lifting seat 5, the top of the lifting seat 5 is slidably connected with a moving seat 51, the moving seat 51 is driven by an adjusting cylinder to move linearly along the surface of the lifting seat 5, an upper fixed plate 52 is installed at the bottom of the moving seat 51, and a torque measuring unit is arranged between the upper fixed plate 52 and the moving seat 51.

[0040] Furthermore, the socket 2 is driven by a motor, and the motor drives the socket 2 located at the anti-bending station 101 so that the single rotation angle is 90°. When the insulator anti-bending performance test is performed, the socket 2 can be rotated multiple times so that the insulator can be rotated multiple times by 90°, thereby performing a four-way bending test.

[0041] In this embodiment, the suspension 3 includes an arc segment 301, and a loading straight segment 302 and a unloading straight segment 303 are respectively provided at both ends of the arc segment 301. The shape and specifications of the arc segment 301 are adapted to the distribution trajectory of the anti-bending station 101 and the anti-torsion station 102, so that when the load-bearing block 32 rotates along the arc segment 301, the insulator to be tested can be accurately transported to each anti-bending station 101 and anti-torsion station 102.

[0042] It should be added that a limiting guide groove 311 is provided at the bottom of the clamping seat 36, and the inner side surface of the limiting guide groove 311 is slidably connected to a limiting guide block 312, the limiting guide block 312 is T-shaped, and the limiting guide block 312 is fixedly connected to the clamping support plate 310, the clamping support plate 310 is L-shaped, and the clamping end of the clamping support plate 310 is arranged in an arc shape, so that the clamping side of the clamping support plate 310 can better fit the surface of the short column 22.

[0043] In this embodiment, the fixing mechanism includes a support spring 8 fixedly connected to the bottom of the receiving groove 21, the top of the support spring 8 is fixedly connected to a bottom plate 81, the outer side surface of the bottom plate 81 is annularly equidistantly rotatably connected to four connecting rods 82, the interior of the receiving seat 2 is provided with an active cavity 83 corresponding to the connecting rod 82, the top and bottom of the active cavity 83 are respectively slidably connected to an upper rack 84 and a lower rack 85, the interior of the active cavity 83 is rotatably connected to a transmission gear 86, the upper rack 84 is fixedly connected to one end of the receiving groove 21 with a limiting splint 87, the limiting splint 87 is provided with an arc clamping groove 88 at one end of the receiving groove 21, the inner side surface of the limiting splint 87 is circularly rotatably connected to a plurality of limiting wheels 89, the outer side of the limiting wheel 89 is provided with an anti-slip device, the top of the bottom plate 81 and the bottom of the upper fixed plate 52 are both fixedly connected to positioning columns 810 adapted to the positioning groove 24.

[0044] It should be supplemented that the end of the connecting rod 82 away from the base plate 81 is rotatably connected to the lower rack 85, the upper rack 84 and the lower rack 85 are respectively meshed with the upper and lower ends of the transmission gear 86, and horizontal guide bars 811 are provided on both sides of the upper rack 84 and the lower rack 85. The inner side surface of the movable cavity 83 is provided with a horizontal groove 812 corresponding to the horizontal guide bar 811, and the limiting wheel 89 is vertically arranged, and the limiting wheel 89 extends to the inside of the circular arc clamping groove 88 at one end close to the circular arc clamping groove 88.

[0045] During operation, the operator uses a handling device or manually rolls the insulator to be tested to move the insulator to be tested directly below the feeding straight section 302, and keeps the positioning groove 24 on the top convex plate 23 of the insulator to be tested in the same direction. Then, the telescopic end of the lifting cylinder 35 extends downward and drives the clamping seat 36 to move downward. The clamping seat 36 moves downward and drives the clamping support plate 310 to move downward to a suitable position height. Then, the lifting cylinder 35 stops moving. At this time, the bidirectional screw 38 rotates and drives the movable blocks 39 on both sides to move synchronously toward each other, so that The clamping plates 310 on both sides approach each other and contact the outer surface of the short column 22 above the insulator to be tested. After that, the bidirectional screw 38 stops rotating, and the telescopic end of the lifting cylinder 35 begins to shrink and drives the clamping plate 310 to move upward to reset. During the upward movement of the clamping plate 310, it moves upward along the surface of the short column 22. When it moves to contact the bottom of the convex plate 23, it continues to move upward and drives the insulator to be tested to move upward synchronously, so that the insulator to be tested is suspended in the air until the clamping plate 310 moves upward to the end of the stroke, at which time the lifting cylinder 35 stops moving again;

[0046] Afterwards, the driving gear 34 rotates, and under the cooperation of the guide rack 33, the driving gear 34 moves along the direction of the suspension 3, and the driving gear 34 drives the bearing block 32 to move when moving, and the bearing block 32 drives the insulator to be tested below it to move, so that the insulator to be tested moves along the direction of the suspension 3 to the anti-torsion station 102 where the arc segment 301 forms the end. When reaching the test position on the anti-torsion station 102, the driving gear 34 stops rotating, and the telescopic end of the lifting cylinder 35 extends downward and drives the insulator to be tested to move downward until the short column 22 and the convex plate 23 at the bottom end thereof fall into the receiving groove 21 below it, and then the bidirectional screw 38 rotates in the opposite direction and drives the movable blocks 39 on both sides to move away from each other, so that the movable blocks 39 can drive the clamping support plate 310 to separate from the short column 22 on the insulator to be tested, and then the driving gear 34 rotates in the opposite direction and drives the bearing block 32 to move in the opposite direction to reset;

[0047] After the convex disc 23 and the short column 22 at the bottom end of the insulator to be tested fall into the receiving groove 21, they contact the bottom plate 81, and under the action of the self-weight of the insulator to be tested, it will overcome the deformation force of the support spring 8 and drive the bottom plate 81 to move downward. During the downward movement of the bottom plate 81, under the cooperation of the connecting rod 82, the lower rack 85 can be driven to move in the direction away from the bottom plate 81. Under the cooperation of the transmission gear 86, the upper rack 84 moves in the direction close to the bottom plate 81 and drives the limiting clamping plate 87 to move, so that the limiting wheel 89 inside the arc clamping groove 88 can contact the surface of the short column 22 below the insulator to be tested, thereby playing a certain supporting and limiting role for the insulator to be tested. In addition, when the convex disc 23 at the bottom end of the insulator to be tested contacts the bottom plate 81, the positioning column 810 arranged on the bottom plate 81 is inserted into the positioning groove 24, so that it can cooperate with the limiting wheel 89 to stably support the insulator to be tested.

[0048] Afterwards, the cylinder is adjusted to drive the moving seat 51 to move along the surface of the lifting seat 5, so that the moving seat 51 drives the upper fixed plate 52 to move to a position corresponding to the insulator to be tested. Afterwards, the lifting seat 5 moves downward to drive the upper fixed plate 52 to move downward, so that the positioning column 810 at the bottom of the upper fixed plate 52 can be inserted into the positioning groove 24 on the top convex plate 23 of the insulator to be tested, thereby completing the rapid fixation of the insulator to be tested. Then, the bottom receiving seat 2 is rotated to drive the insulator to be tested to rotate for torsion test;

[0049] During the torsion test, the driving gear 34 drives the bearing block 32 to move in the reverse direction and reset, and the insulator to be tested is continuously transported again, so that it moves to the bending resistance station 101 adjacent to the torsion resistance station 102, and the insulator to be tested is fixed in the same fixing method as above. After the insulator to be tested is placed, the driving gear 34 drives the bearing block 32 to reset again and place the insulator to be tested in the remaining bending resistance stations 101 in turn. After the insulator to be tested is placed at the bending resistance station 101, the test cylinder drives the test push rod 41 to apply to the short column 22 above the insulator to be tested, so as to perform the bending test of the insulator;

[0050] During the process of multiple groups of tests, when the first insulator to be tested completes the test, the driving gear 34 arranged at the unloading straight section 303 drives the load-bearing block 32 to move and remove the tested insulators in turn, thereby achieving continuous testing of the insulators.

[0051] Embodiment 2:

[0052] See also Figure 7 This embodiment provides a technical solution based on the above embodiment: a limiting block 6 is fixedly connected to the bottom of the load-bearing block 32, a through groove 61 is provided on the surface of the clamping seat 36, the limiting block 6 is slidably connected to the inner side surface of the through groove 61, and when the lifting cylinder 35 drives the clamping pallet 310 to move upward to the end of the stroke, the distance value between the clamping pallet 310 and the surface of the limiting block 6 facing each other is adapted to the thickness value of the convex plate 23.

[0053] As the clamping support plate 310 moves upward and drives the insulator to be tested to move upward synchronously, the convex disc 23 on the top of the insulator to be tested gradually approaches the bottom of the limiting block 6. When the clamping support plate 310 rises to the end of the stroke, the top surface of the convex disc 23 on the top of the insulator to be tested abuts against the bottom surface of the limiting block 6. Therefore, with the cooperation of the clamping support plate 310 and the limiting block 6, the convex disc 23 on the top of the insulator to be tested can be effectively limited so that it cannot swing, thereby preventing the insulator to be tested from swinging during transportation, which is beneficial to the accuracy of the position of the insulator to be tested after arriving at the designated workstation, and its bottom convex disc 23 and the short column 22 can be more efficiently inserted into the receiving groove 21.

[0054] Embodiment 3:

[0055] See also Figure 6 This embodiment provides a technical solution based on the above embodiment: ball grooves 7 are provided at the top and bottom of the inner wall of the driving groove 37, the shape of the ball groove 7 is consistent with the suspension 3, and balls 71 are provided at the top and bottom of the load-bearing block 32, and the shape and specifications of the ball grooves 7 are compatible with the balls 71.

[0056] By having the ball 71 contact the bottom of the ball groove 7 instead of the load-bearing block 32 directly contacting the bottom of the inner wall of the guide groove 31, the friction resistance of the load-bearing block 32 during movement is greatly reduced, which not only reduces the wear of the load-bearing block 32 during operation, but also effectively reduces the input of the driving source of the driving gear 34, making the transportation process of the insulator smoother.

[0057] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-voltage insulator multi-station automatic four-way bending and torsion testing machine, comprising a base (1), a support frame (103) being arranged on the top of the base (1), the base (1) being in a circular ring shape and having four bending stations (101) and one torsion station (102) being arranged in sequence and equidistantly, the bending station (101) being provided with a bending test unit for providing a horizontal test force, and the torsion station (102) being provided with a torsion test unit for providing a torsion test force, characterized in that: The bending test unit and the torsion test unit both comprise a receiving seat (2) rotatably connected to the base (1), the top of the receiving seat (2) being provided with a receiving groove (21), an insulator to be tested being mounted on the receiving seat (2) via the receiving groove (21), the top and bottom of the insulator to be tested being provided with short columns (22), the ends of the short columns (22) being provided with convex plates (23), and the surfaces of the convex plates (23) being provided with positioning grooves (24); The support frame (103) is provided with a suspension frame (3) on the outside, a guide groove (31) is provided at the bottom of the suspension frame (3), both ends of the guide groove (31) are slidably connected with a load-bearing block (32), a guide rack (33) is provided on the side of the inner wall of the guide groove (31), the inner side surface of the load-bearing block (32) is rotatably connected with a driving gear (34), the driving gear (34) is driven by a motor, and the driving gear (34) is meshed with the guide rack (33), the bottom of the load-bearing block (32) is fixedly connected with a lifting cylinder (35), the bottom of the lifting cylinder (35) is fixedly connected with a clamping seat (36), the bottom of the clamping seat (36) is provided with a driving groove (37), the inner side surface of the driving groove (37) is rotatably connected with a bidirectional screw (38), the two ends of the bidirectional screw (38) are symmetrically threadedly connected with a movable block (39), and the bottom of the movable block (39) is provided with a clamping support plate (310); The receiving seat (2) is provided with a fixing mechanism, and the fixing mechanism is used to fix the insulator to be tested.

2. A high voltage porcelain multi-station automatic four-way bending and torsion testing machine according to claim 1, characterized in that: The bending resistance test unit comprises a height-adjustable mounting seat (4), the inner side surface of the mounting seat (4) is slidably connected to a test push rod (41), and the test push rod (41) is driven by a test cylinder to move in a horizontal direction; The torsion test unit comprises a height-adjustable lifting seat (5), the top of the lifting seat (5) is slidably connected to a moving seat (51), the moving seat (51) is driven by an adjusting cylinder to perform linear motion along the surface of the lifting seat (5), and an upper fixed plate (52) is installed at the bottom of the moving seat (51).

3. A high voltage porcelain multi-station automatic four-way bending and torsion testing machine according to claim 2, characterized in that: The receiving seat (2) is driven by a motor, and the motor driving the receiving seat (2) is located at the anti-bending station (101). The single rotation angle of the receiving seat (2) is 90°.

4. The high-voltage porcelain multi-station automatic four-way bending and torsion testing machine according to claim 1 is characterized in that: The suspension (3) comprises an arc segment (301), and two ends of the arc segment (301) are respectively provided with a loading straight segment (302) and a unloading straight segment (303), and the shape and specification of the arc segment (301) are compatible with the distribution tracks of the anti-bending station (101) and the anti-torsion station (102).

5. A high voltage insulator multi-station automatic four-way bending and torsion testing machine according to claim 4, characterized in that: A limiting guide groove (311) is provided at the bottom of the clamping seat (36); the inner side surface of the limiting guide groove (311) is slidably connected to a limiting guide block (312); the limiting guide block (312) is in a T-shape; the limiting guide block (312) is fixedly connected to a clamping support plate (310); the clamping support plate (310) is in an L-shape; and the clamping end of the clamping support plate (310) is arranged in an arc shape.

6. A high voltage insulator multi-station automatic four-way bending and torsion testing machine according to claim 5, characterized in that: A limiting block (6) is fixedly connected to the bottom of the load-bearing block (32), a through groove (61) is provided on the surface of the clamping seat (36), the limiting block (6) is slidably connected to the inner side surface of the through groove (61), and when the lifting cylinder (35) drives the clamping support plate (310) to move upward to the end of the stroke, the distance value between the surfaces of the clamping support plate (310) and the limiting block (6) facing each other is matched with the thickness value of the convex plate (23).

7. A high voltage porcelain multi-station automatic four-way bending and torsion testing machine according to claim 6, characterized in that: The top and bottom of the inner wall of the driving groove (37) are both provided with ball grooves (7), the shape of the ball grooves (7) being consistent with that of the suspension (3), and the top and bottom of the interior of the load-bearing block (32) are both provided with balls (71), the shape and specifications of the ball grooves (7) being compatible with those of the balls (71).

8. The high voltage insulator multi-station automatic four-way bending and torsion testing machine according to claim 2 is characterized in that: The fixing mechanism comprises a support spring (8) fixedly connected to the bottom of the receiving groove (21); the top of the support spring (8) is fixedly connected to a bottom plate (81); the outer side surface of the bottom plate (81) is annular and equidistantly rotatably connected to four connecting rods (82); an active cavity (83) corresponding to the connecting rods (82) is provided inside the receiving seat (2); the top and bottom of the active cavity (83) are slidably connected to an upper rack (84) and a lower rack (85) respectively; the inside of the active cavity (83) is rotatably connected to a transmission gear (84). The gear (86) is fixedly connected to a limiting clamp (87) at one end of the upper rack (84) near the receiving groove (21), and a circular arc clamp groove (88) is formed at one end of the limiting clamp (87) near the receiving groove (21). The inner side surface of the limiting clamp (87) is rotatably connected to a plurality of limiting wheels (89) in an arc shape, and the outer side of the limiting wheel (89) is provided with an anti-slip device. The top of the bottom plate (81) and the bottom of the upper fixed plate (52) are both fixedly connected to a positioning column (810) adapted to the positioning groove (24).

9. A high voltage insulator multi-station automatic four-way bending and torsion testing machine according to claim 8, characterized in that: One end of the connecting rod (82) away from the bottom plate (81) is rotatably connected to the lower rack (85); the upper rack (84) and the lower rack (85) are respectively meshed with the upper and lower ends of the transmission gear (86); both sides of the upper rack (84) and the lower rack (85) are provided with horizontal guide bars (811); and the inner side surface of the movable cavity (83) is provided with a horizontal groove (812) corresponding to the horizontal guide bar (811).

10. The high voltage insulator multi-station automatic four-way bending and torsion testing machine according to claim 8, characterized in that: The limiting wheel (89) is arranged vertically, and one end of the limiting wheel (89) close to the circular arc clamping groove (88) extends into the interior of the circular arc clamping groove (88).

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