Suspension type porcelain insulator detection method and equipment for detection of method

Abstract

The invention discloses a suspension type porcelain insulator detection method and equipment for detection of the method, and relates to the technical field of insulator detection, the suspension type porcelain insulator detection equipment comprises a mounting table, one end of a positioning block is provided with a distance adjusting traction piece connected with a movable guide block, and the other end of a tension sensor is provided with a bending detection piece connected with the distance adjusting traction piece. According to the suspension type porcelain insulator bending detection device, the bending detection part is arranged, the telescopic air cylinder is started, the positioning rod swings relative to the positioning block through extension of the inclined connecting rod, so that the suspension type porcelain insulator is bent, and when the telescopic air cylinder contracts, an aqueous solution in a second piston barrel can be extracted through cooperation of a first piston barrel and a first piston rod; the worm drives the worm gear to rotate, so that the mounting base can drive the suspension type porcelain insulator to rotate, the suspension type porcelain insulator is bent in different directions through repeated stretching and retracting of the telescopic air cylinder, and the accuracy of detection data is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of insulator detection, in particular to a suspension type porcelain insulator detection method and a device for detecting the method. BACKGROUND

[0002] Suspension type insulators are generally made of insulating parts and metal accessories by using adhesive or mechanical clamping. Insulators are widely used in power systems, and are generally external insulation, working in atmospheric conditions. The external live conductors of overhead transmission lines, busbars of power plants and substations and various electrical equipment must be supported by insulators and insulated from the ground or other conductors with potential difference.

[0003] When comprehensively evaluating the performance of suspension type insulators, only considering the axial tensile performance is not enough to reflect the mechanical performance under actual complex working conditions. In actual operation, suspension type insulators often need to face forces from different directions, especially lateral forces. For example, under the action of strong wind, the insulator will bear significant lateral wind pressure, causing it to bend and deform. However, it is not convenient to detect the performance of the suspension type insulator under the action of lateral force when detecting the insulator, which may result in certain limitations in detection. SUMMARY

[0004] The purpose of the present application is to solve the problem of inconvenient detection of lateral force of the insulator, and to provide a suspension type porcelain insulator detection method and a device for detecting the method.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a suspension type porcelain insulator detection device, comprising a mounting table, the top of the mounting table is fixedly connected with an H-shaped connecting frame, one end of the top of the H-shaped connecting frame is connected with a positioning block, the top of the positioning block is provided with a controller, the two sides of the positioning block are rotatably connected with a positioning rod through a rotating shaft, the positioning rod is movably sleeved with a movable guide block, one end of the positioning block is provided with a distance adjusting traction member connected with the movable guide block, one side of the movable guide block is provided with a positioning block, the positioning block close to the positioning block is rotatably connected with a tension sensor through a rotating shaft, the side of the tension sensor away from the positioning block is provided with a mounting seat, the other end of the tension sensor is provided with a bending detection member connected with the distance adjusting traction member.

[0006] As a further scheme of the present application: the number of the positioning rods is two, and the two positioning rods are symmetrically arranged along the vertical central axis of the positioning block.

[0007] As a further further scheme of the present application: the distance adjusting traction member comprises a servo motor mounted on the top of the H-shaped connecting frame away from the controller, the output end of the servo motor is connected with a distance adjusting screw rod, one end of the distance adjusting screw rod away from the servo motor is rotatably connected with a positioning block through a bearing, a threaded sleeve block is movably sleeved on the outer side of the distance adjusting screw rod, a positioning guide block is rotatably connected on the side of the threaded sleeve block close to the positioning block through a rotating shaft, one end of the positioning guide block is rotatably connected with an inclined connecting rod through a rotating shaft, and one end of the inclined connecting rod away from the positioning guide block is rotatably connected with a movable guide block through a rotating shaft.

[0008] As a further further scheme of the present application: the inner side of the threaded sleeve block is provided with a threaded hole matched with the distance adjusting screw rod.

[0009] As a further further scheme of the present application: the rotating shafts of the positioning guide block, the threaded sleeve block, the positioning rod and the positioning block are coaxial.

[0010] As a further further scheme of the present application: the bending detection member comprises a telescopic cylinder mounted on the inner side of the H-shaped connecting frame, the output end of the telescopic cylinder is connected with a movable frame, the two sides of the H-shaped connecting frame are fixedly connected with a first piston cylinder located on the inner side of the movable frame, a first piston rod extending to the lower side of the first piston cylinder is inserted into the first piston cylinder, the bottom end of the first piston rod is connected with the bottom of the movable frame, the bottom of the first piston cylinder is provided with a telescopic spring connected with the first piston rod, the top of the movable frame is provided with a first straight gear rack, and one end of the rotating shaft of the positioning rod and the positioning block is provided with a transmission straight gear engaged with the first straight gear rack.

[0011] As a further further scheme of the present application: the bending detection member further comprises a second piston cylinder mounted on the top of the positioning block, a second piston rod extending to the outer side of the second piston cylinder is inserted into the second piston cylinder, one end of the second piston rod is provided with a second straight gear rack, one end of the rotating shaft of the positioning block connected with the tension sensor is provided with a worm wheel, one side of the positioning block is rotatably connected with a worm connected with the worm wheel through a rotating shaft, one end of the worm is fixedly connected with a ratchet wheel, one end of the worm is rotatably connected with a gear ring located on the outer side of the ratchet wheel through a bearing, the inner wall of the gear ring is rotatably connected with a pawl engaged with the ratchet wheel through a rotating shaft, the second straight gear rack is engaged with the outer wall of the gear ring, and one end of the second piston cylinder away from the second piston rod is provided with a hose connected with one side of the top of the first piston cylinder.

[0012] As a further further scheme of the present application: the outer side of the rotating shaft of the pawl and the gear ring inner wall is clamped with a torsion spring through a clamping groove.

[0013] As a further scheme of the present application: the first piston cylinder and the second piston cylinder are communicated through a hose, the inner wall diameter of the first piston cylinder is larger than that of the second piston cylinder, and the internal volumes of the first piston cylinder and the second piston cylinder are equal.

[0014] The application further discloses a detection method of the suspension type porcelain insulator. S1: first, connect both ends of the suspension type porcelain insulator to the mounting seat, and then control the distance adjusting traction member to operate through the controller, so that the mounting seat pulls both ends of the suspension type porcelain insulator to pull the insulator to a horizontal state; S2: the distance adjusting traction member continues to operate, and the mounting seat continuously pulls the suspension type porcelain insulator to make the tension sensor calculate the tension of the insulator, and then judge whether the insulator is qualified under the specified tension according to whether the insulator is damaged; S3: then, control the bending detection member to operate through the controller, so that the positioning rod rotates relative to the positioning block to make the insulator bend, and the tension sensor detects the force borne by the insulator when bending in the process; S4: after detection, control the bending detection member and the distance adjusting traction member to operate through the controller to restore the positioning rod and the movable guide block, and then take down the detected suspension type porcelain insulator.

[0015] Compared with the prior art, the application has the following advantages: 1. By setting the distance adjusting traction member, starting the servo motor, and driving the distance adjusting screw rod to rotate through the operation of the servo motor, the threaded sleeve block moves in the horizontal direction along the distance adjusting screw rod, so that the positioning guide block extrudes one end of the inclined connecting rod, so that the inclined connecting rod pushes the movable guide block, and the movable guide block moves away from the positioning block along the positioning rod, and in the process, the movable guide block drives the mounting seat to move through the positioning block and the tension sensor, so that the mounting seat pulls both ends of the suspension type porcelain insulator, and the tension sensor detects the tension borne by the suspension type porcelain insulator, which is simple to operate and improves the detection efficiency. 2, by setting the bending detection piece, start telescopic cylinder, through the expansion of the inclined connecting rod to make the swing lever relative positioning block swing, so that the suspension type porcelain insulator bending, when telescopic cylinder contraction through the first piston cylinder and first piston rod cooperation can be extracted to the second piston cylinder inside the aqueous solution, so as to make the worm drive worm gear rotation, through the rotation of the worm gear to make the tension sensor rotation, so can make the mounting seat drive suspension type porcelain insulator rotation, so can through the telescopic cylinder repeatedly telescopic make the suspension type porcelain insulator bending in different directions, at the same time with the tension sensor can be detected when the force of the suspension type porcelain insulator bending, improve the accuracy of the detection data. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 for the overall structure of the present application schematic diagram; Figure 2 for the side view of the present application; Figure 3 for the present application Figure 2 enlarged view of A; Figure 4 for the H type of the present application inside the structure of the rack schematic diagram; Figure 5 for the present application adjusting distance screw and swing lever connection schematic diagram; Figure 6 for the present application tension sensor and second piston cylinder connection schematic diagram; Figure 7 for the present application Figure 6 enlarged view of B; Figure 8 for the present application first piston cylinder and second piston cylinder connection schematic diagram.

[0017] In the figure: 1, installation platform; 2, H type rack; 3, positioning block; 4, controller; 5, servo motor; 6, adjusting distance screw; 7, transmission spur gear; 8, swing lever; 9, positioning block; 10, hose; 11, threaded sleeve block; 12, inclined connecting rod; 13, movable guide block; 14, worm gear; 15, worm; 16, first straight rack; 17, first piston cylinder; 18, movable frame; 19, telescopic spring; 20, first piston rod; 21, telescopic cylinder; 22, positioning guide block; 23, tension sensor; 24, mounting seat; 25, second piston rod; 26, second piston cylinder; 27, second straight rack; 28, gear ring; 29, pawl; 30, ratchet wheel. DETAILED DESCRIPTION

[0018] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described in the description of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0019] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for description purposes and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. The embodiments of the present application will be described below according to the overall structure of the present application.

[0020] Please refer to Figures 1-8 In the embodiments of the present application, a suspension type porcelain insulator detection device comprises a mounting table 1, the top of the mounting table 1 is fixedly connected with an H-shaped connecting frame 2, one end of the top of the H-shaped connecting frame 2 is connected with a positioning block 3, the top of the positioning block 3 is provided with a controller 4, both sides of the positioning block 3 are rotatably connected with a positioning rod 8 through a rotating shaft, the positioning rod 8 is movably sleeved with a movable guide block 13, one end of the positioning block 3 is provided with a distance adjusting traction member connected with the movable guide block 13, one side of the positioning block 9 close to the positioning block 3 is rotatably connected with a tension sensor 23 through a rotating shaft, the side of the tension sensor 23 away from the positioning block 9 is provided with a mounting seat 24, and the other end of the tension sensor 23 is provided with a bending detection member connected with the distance adjusting traction member.

[0021] Among them, the number of the positioning rod 8 is two, and the two positioning rods 8 are symmetrically arranged along the vertical central axis of the positioning block 3.

[0022] In the embodiment, first, the two ends of the suspension porcelain insulator are connected with the mounting seat 24, then the controller 4 controls the distance adjusting traction member to operate, at this time, the mounting seat 24 pulls the two ends of the suspension porcelain insulator, so as to pull the insulator to the horizontal state, then the distance adjusting traction member continues to operate, the mounting seat 24 continuously pulls the suspension porcelain insulator, so that the tension sensor 23 calculates the tension of the insulator, then whether the insulator is damaged is judged according to whether the insulator is qualified under the specified tension, then the controller 4 controls the bending detection member to operate, at this time, the positioning rod 8 rotates relative to the positioning block 3, so as to make the insulator bend, in the process, the tension sensor 23 detects the force of the insulator when bending, after the detection is completed, the controller 4 controls the operation of the bending detection member and the distance adjusting traction member to restore the positioning rod 8 and the movable guide block 13, then the detected suspension porcelain insulator is taken off.

[0023] Please refer to Figure 1 , Figure 2 , Figure 5 , the distance adjusting traction member includes a servo motor 5 mounted on the top of the H-shaped connecting frame 2 away from the controller 4, the output end of the servo motor 5 is connected with a distance adjusting screw rod 6, and the end of the distance adjusting screw rod 6 away from the servo motor 5 is rotatably connected with the positioning block 3 through a bearing, the outer side of the distance adjusting screw rod 6 movably sleeves a threaded sleeve block 11, the side of the threaded sleeve block 11 close to the positioning block 3 is rotatably connected with a positioning guide block 22 through a rotating shaft, one end of the positioning guide block 22 is rotatably connected with a inclined connecting rod 12 through a rotating shaft, and the end of the inclined connecting rod 12 away from the positioning guide block 22 is rotatably connected with the movable guide block 13 through a rotating shaft.

[0024] The inner side of the threaded sleeve block 11 is provided with a threaded hole matched with the distance adjusting screw rod 6, and the rotating shafts connected with the positioning guide block 22, the threaded sleeve block 11 and the positioning block 3 are coaxial.

[0025] In the embodiment, the servo motor 5 is started, the distance adjusting screw rod 6 is driven to rotate by the operation of the servo motor 5, at this time, the threaded sleeve block 11 moves in the horizontal direction along the distance adjusting screw rod 6, so as to press the one end of the inclined connecting rod 12 through the positioning guide block 22, so that the inclined connecting rod 12 pushes the movable guide block 13, at this time, the movable guide block 13 moves along the positioning rod 8 away from the positioning block 3, in the process, the movable guide block 13 drives the mounting seat 24 to move through the positioning block 9 and the tension sensor 23, so as to pull the two ends of the suspension porcelain insulator through the mounting seat 24, and the tension of the suspension porcelain insulator can be detected through the tension sensor 23.

[0026] Please refer to Figure 2 , Figure 3 , Figure 4 ,Figure 6 、 Figure 7 、 Figure 8 The bending detection member comprises a telescopic cylinder 21 mounted on the inner side of the H-shaped connecting frame 2, the output end of the telescopic cylinder 21 is connected with a movable frame 18, the two sides of the H-shaped connecting frame 2 are fixedly connected with a first piston cylinder 17 located on the inner side of the movable frame 18, the first piston cylinder 17 is inserted with a first piston rod 20 extending to the lower side of the first piston cylinder 17, the bottom end of the first piston rod 20 is connected with the bottom of the movable frame 18, the bottom of the first piston cylinder 17 is provided with a telescopic spring 19 connected with the first piston rod 20, the top of the movable frame 18 is provided with a first straight rack 16, the transmission straight gear 7 engaged with the first straight rack 16 is arranged on one end of the rotating shaft of the positioning block 3 connected with the positioning block 3. The bending detection member further comprises a second piston cylinder 26 mounted on the top of the positioning block 9, the second piston cylinder 26 is inserted with a second piston rod 25 extending to the outer side of the second piston cylinder 26, one end of the second piston rod 25 is provided with a second straight rack 27, one end of the rotating shaft of the positioning block 9 connected with the tension sensor 23 is provided with a worm gear 14, one side of the positioning block 9 is rotatably connected with a worm 15 engaged with the worm gear 14 through a rotating shaft, one end of the worm 15 is fixedly connected with a ratchet wheel 30, one end of the worm 15 is rotatably connected with a gear ring 28 located on the outer side of the ratchet wheel 30 through a bearing, the inner wall of the gear ring 28 is rotatably connected with a pawl 29 engaged with the ratchet wheel 30 through a rotating shaft, the second straight rack 27 is engaged with the outer wall of the gear ring 28, one end of the second piston cylinder 26 away from the second piston rod 25 is provided with a hose 10 connected with one side of the top of the first piston cylinder 17.

[0027] Wherein, the outer side of the rotating shaft of the pawl 29 connected with the inner wall of the gear ring 28 is clamped with a torsion spring through a clamping groove, the first piston cylinder 17 and the second piston cylinder 26 are communicated through the hose 10, the inner wall diameter of the first piston cylinder 17 is larger than the inner wall diameter of the second piston cylinder 26, the internal volume of the first piston cylinder 17 is equal to that of the second piston cylinder 26.

[0028] In this embodiment: start the telescopic cylinder 21, through the expansion of the inclined connecting rod 12 to make the movable frame 18 drive the first straight rack 16 up, at this time the first straight rack 16 drives the transmission straight gear 7 to rotate, so as to make the swing rod 8 swing relative to the positioning block 3, so that the suspension porcelain insulator is bent, in this process the first piston rod 20 will be and the movable frame 18 up, at this time the first piston rod 20 to the water solution in the first piston cylinder 17 is extruded, so that the water solution in the first piston cylinder 17 along the hose 10 into the second piston cylinder 26, so as to make the second piston rod 25 to the direction away from the second piston cylinder 26 moves, so that the second straight rack 27 drives the gear ring 28 to rotate, through the one-way limit of the pawl 29 to the ratchet wheel 30 makes the gear ring 28 can't drive the ratchet wheel 30 to rotate, so as to make the suspension porcelain insulator only bend, when the telescopic cylinder 21 is contracted through the cooperation of the first piston cylinder 17 and the first piston rod 20 can extract the water solution in the second piston cylinder 26, so as to make the second piston rod 25 drive the second straight rack 27 to the second piston cylinder 26 moves, at this time the second straight rack 27 drives the gear ring 28 reverse rotation when the ratchet wheel 30 will be under the action of the pawl 29 with the gear ring 28 synchronous rotation, so as to make the worm 15 drive the worm wheel 14 to rotate, through the rotation of the worm wheel 14 to make the tension sensor 23 rotate, so as to make the mounting seat 24 drive the suspension porcelain insulator to rotate, so as to make the suspension porcelain insulator through the telescopic cylinder 21 repeatedly stretching and contracting to bend in different directions, improve the accuracy of the detection data.

[0029] The following combines the above-mentioned suspension porcelain insulator detection device, provides a kind of suspension porcelain insulator detection method, specifically including the following steps: S1: first, the two ends of the suspension porcelain insulator are connected with the mounting seat 24, start servo motor 5, drive the lead screw 6 to rotate by the operation of servo motor 5, at this time the threaded sleeve block 11 will move in horizontal direction along the lead screw 6, so as to make the positioning guide block 22 extrude one end of the inclined connecting rod 12, so that the inclined connecting rod 12 pushes the movable guide block 13, at this time the movable guide block 13 will move along the swing rod 8 to the direction away from the positioning block 3, in this process the movable guide block 13 will drive the mounting seat 24 to move through the positioning block 9 and the tension sensor 23, so as to make the mounting seat 24 pull the two ends of the suspension porcelain insulator, so as to pull the insulator to horizontal state; S2: the tension sensor 23 calculates the tension of the insulator by continuously pulling the suspension porcelain insulator by the mounting seat 24, and then determines whether the insulator is qualified under the specified tension according to whether the insulator is damaged. S3: start the telescopic cylinder 21, through the expansion of the inclined link 12 to make the movable frame 18 drive the first straight rack 16 to move up, at this time the first straight rack 16 drives the transmission straight gear 7 to rotate, so as to make the swing rod 8 swing relative to the positioning block 3, so that the suspension porcelain insulator is bent, in this process, the first piston rod 20 will be moved up with the movable frame 18, at this time the first piston rod 20 extrudes the water solution in the first piston cylinder 17, so that the water solution in the first piston cylinder 17 enters the second piston cylinder 26 along the hose 10, so as to make the second piston rod 25 move away from the second piston cylinder 26, so that the second straight rack 27 drives the gear ring 28 to rotate, the one-way limiting of the ratchet pawl 29 to the ratchet wheel 30 makes the gear ring 28 unable to drive the ratchet wheel 30 to rotate, so as to make the suspension porcelain insulator only bend, when the telescopic cylinder 21 is contracted, the water solution in the second piston cylinder 26 can be extracted through the cooperation of the first piston cylinder 17 and the first piston rod 20, so as to make the second piston rod 25 drive the second straight rack 27 move towards the second piston cylinder 26, at this time the second straight rack 27 drives the gear ring 28 to rotate in the opposite direction, the ratchet wheel 30 will rotate synchronously with the gear ring 28 under the action of the ratchet pawl 29, so as to make the worm 15 drive the worm wheel 14 to rotate, through the rotation of the worm wheel 14 to make the tension sensor 23 rotate, so as to make the mounting seat 24 drive the suspension porcelain insulator to rotate, so as to make the suspension porcelain insulator bend in different directions through the repeated expansion and contraction of the telescopic cylinder 21, improve the accuracy of the detection data; S4: after the detection is completed, the telescopic cylinder 21 is restored through the operation of the controller 4 to control the servo motor 5, so that the swing rod 8 and the movable guide block 13 are restored, and then the detected suspension porcelain insulator is removed.

[0030] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A suspension porcelain insulator detection device comprising a mounting table (1), characterized in that, The top of the mounting table (1) is fixedly connected with an H-shaped connecting frame (2), one end of the top of the H-shaped connecting frame (2) is connected with a positioning block (3), the top of the positioning block (3) is provided with a controller (4), both sides of the positioning block (3) are rotatably connected with a swing rod (8) through a rotating shaft, the swing rod (8) movably sleeves the movable guide block (13), one end of the positioning block (3) is provided with a distance adjusting traction member connected with the movable guide block (13), one side of the movable guide block (13) is provided with a positioning block (9), one side of the positioning block (9) close to the positioning block (3) is rotatably connected with a tension sensor (23) through a rotating shaft, the side of the tension sensor (23) away from the positioning block (9) is provided with a mounting seat (24), the other end of the tension sensor (23) is provided with a bending detection member connected with the distance adjusting traction member.

2. The device for detecting a suspension porcelain insulator according to claim 1, wherein The number of the swing rod (8) is two, and the two swing rods (8) are symmetrically arranged along the vertical central axis of the positioning block (3).

3. The device for detecting a suspension porcelain insulator according to claim 1, wherein The distance adjusting traction member comprises a servo motor (5) mounted on the top of the H-shaped connecting frame (2) away from the controller (4), the output end of the servo motor (5) is connected with a distance adjusting screw rod (6), one end of the distance adjusting screw rod (6) away from the servo motor (5) is rotatably connected with the positioning block (3) through a bearing, the outer side of the distance adjusting screw rod (6) movably sleeves a threaded sleeve block (11), one side of the threaded sleeve block (11) close to the positioning block (3) is rotatably connected with a positioning guide block (22) through a rotating shaft, one end of the positioning guide block (22) is rotatably connected with an inclined connecting rod (12) through a rotating shaft, one end of the inclined connecting rod (12) away from the positioning guide block (22) is rotatably connected with the movable guide block (13) through a rotating shaft.

4. The device for detecting a suspension porcelain insulator according to claim 3, wherein The inner side of the threaded sleeve block (11) is provided with a threaded hole matched with the distance adjusting screw rod (6).

5. The device for detecting a suspension porcelain insulator according to claim 3, wherein The rotating shafts of the positioning guide block (22), the threaded sleeve block (11), the swing rod (8) and the positioning block (3) are coaxial.

6. The device for detecting a suspension porcelain insulator according to claim 3, wherein The bending detection member comprises a telescopic air cylinder (21) mounted on the inner side of the H-shaped connecting frame (2), the output end of the telescopic air cylinder (21) is connected with a movable frame (18), both sides of the H-shaped connecting frame (2) are fixedly connected with a first piston cylinder (17) located on the inner side of the movable frame (18), the inside of the first piston cylinder (17) is inserted with a first piston rod (20) extending to below the first piston cylinder (17), the bottom end of the first piston rod (20) is connected with the bottom of the movable frame (18), the bottom of the first piston cylinder (17) is provided with a telescopic spring (19) connected with the first piston rod (20), the top of the movable frame (18) is provided with a first straight toothed rack (16), one end of the rotating shaft of the swing rod (8) and the positioning block (3) is provided with a transmission straight gear (7) engaged with the first straight toothed rack (16).

7. The device for detecting a suspension porcelain insulator according to claim 6, wherein The bending detection piece further comprises a second piston cylinder (26) installed on the top of the positioning block (9), the inside of the second piston cylinder (26) is inserted with a second piston rod (25) extending to the outside of the second piston cylinder (26), one end of the second piston rod (25) is provided with a second straight rack (27), one end of the rotating shaft connected with the tension sensor (23) of the positioning block (9) is provided with a worm gear (14), one side of the positioning block (9) is rotatably connected with a worm (15) engaged with the worm gear (14) through a rotating shaft, one end of the worm (15) is fixedly connected with a ratchet wheel (30), one end of the worm (15) is rotatably connected with a gear ring (28) located outside the ratchet wheel (30) through a bearing, the inner wall of the gear ring (28) is rotatably connected with a pawl (29) engaged with the ratchet wheel (30) through a rotating shaft, the second straight rack (27) is engaged with the outer wall of the gear ring (28), and one end of the second piston cylinder (26) away from the second piston rod (25) is provided with a hose (10) connected with one side of the top of the first piston cylinder (17).

8. The device for detecting a suspension porcelain insulator according to claim 7, wherein The pawl (29) and the gear ring (28) are connected through the rotating shaft outside the clamping groove.

9. The device for detecting a suspension porcelain insulator according to claim 7, wherein The first piston cylinder (17) and the second piston cylinder (26) are communicated through the hose (10), the inner wall diameter of the first piston cylinder (17) is larger than that of the second piston cylinder (26), and the internal volumes of the first piston cylinder (17) and the second piston cylinder (26) are equal.

10. A method of detecting a suspension porcelain insulator, characterized by, The suspension porcelain insulator detection device of any one of claims 1-9 comprises the following steps: S1: first, connect both ends of the suspension porcelain insulator with the mounting seat (24), then control the distance adjusting traction piece to operate through the controller (4), at this time the mounting seat (24) will pull both ends of the suspension porcelain insulator to pull the insulator to the horizontal state; S2: the distance adjusting traction piece continues to operate, the mounting seat (24) continuously pulls the suspension porcelain insulator to make the tension sensor (23) calculate the tension of the insulator, then judge whether the insulator is qualified under the specified tension according to whether the insulator is damaged; S3: then control the bending detection piece to operate through the controller (4), at this time the positioning lever (8) will rotate relative to the positioning block (3) to make the insulator bend, and the force of the insulator when bending is detected through the tension sensor (23) in the process; S4: after the detection is completed, the controller (4) controls the operation of the bending detection piece and the distance adjusting traction piece to restore the positioning lever (8) and the movable guide block (13), and then the suspension porcelain insulator after detection is completed is removed.

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