A post insulator

Abstract

A kind of support insulator, including insulator body upper section and insulator body lower section, upper installation top plate is provided with upper installation slot, upper installation slot groove wall is provided with upper sliding slot along its longitudinal direction, upper installation slot groove wall is provided with upper clamping slot along its circumferential direction, upper sliding slot and upper clamping slot are communicated with each other;Insulator body upper section is rotated and clamped in upper clamping slot after passing through upper sliding slot by upper clamping block;Lower installation base is provided with lower installation slot, lower installation slot groove wall is provided with lower sliding slot along its longitudinal direction, lower installation slot groove wall is provided with lower clamping slot along its circumferential direction, lower sliding slot and lower clamping slot are communicated with each other;Insulator core rod lower section is rotated and clamped in lower clamping slot after passing through lower sliding slot by lower clamping block to be fixed on lower installation base;The bottom of insulator body upper section is coaxially provided with inserting column, the upper end of insulator body lower section is coaxially provided with inserting buffer groove, and buffering spring is connected between inserting column and inserting buffer groove.The utility model is convenient for overhaul, disassembly and replacement, installation.

Description

TECHNICAL FIELD

[0001] The utility model relates to insulator technical field, and specifically is a kind of post insulator. BACKGROUND

[0002] As an important component of power system, post insulator plays an important role in supporting power equipment and electrical insulation in AC and DC transmission lines. The end of the post insulator is usually fixed to the corresponding tower. Chinese patent 201921435402.9 discloses a post insulator, which is fixed by symmetrical gluing of metal fasteners at both ends of the post insulator rod and opening multiple bolt holes on the end face of the metal fasteners, and is fixed by multiple bolts. The structure of the above-mentioned post insulator is stable when installed by metal fasteners. However, since the post insulator needs to be regularly maintained or replaced, it is difficult for maintenance personnel to loosen the bolts and disassemble the insulator during maintenance or replacement in high-altitude operation, which has a certain degree of difficulty in disassembly operation. SUMMARY

[0003] The utility model aims at providing a kind of post insulator, it is convenient to overhaul when disassembling and replacing, installation.

[0004] To solve the above technical problems, the utility model adopts the specific scheme of a kind of post insulator, including insulator body upper segment and insulator body lower segment, insulator body upper segment is fixed to the corresponding tower by upper installation top plate, and insulator body lower segment is fixed to the corresponding tower by lower installation base;

[0005] An upper installation slot for installing the upper end of the insulator body upper segment is opened on the upper installation top plate, an upper sliding groove is opened on the slot wall of the upper installation slot along its longitudinal direction, and an upper clamping groove is opened on the slot wall of the upper installation slot along its circumferential direction, and the upper sliding groove and the upper clamping groove are in communication with each other;An upper clamping block is provided on the outer wall of the upper end of the insulator body upper segment, and the insulator body upper segment is fixed to the upper installation top plate by rotating and clamping in the upper clamping groove after passing through the upper sliding groove through the upper clamping block;

[0006] A lower installation slot for installing the lower end of the insulator body lower segment is opened on the lower installation base, a lower sliding groove is opened on the slot wall of the lower installation slot along its longitudinal direction, and a lower clamping groove is opened on the slot wall of the lower installation slot along its circumferential direction, and the lower sliding groove and the lower clamping groove are in communication with each other;A lower clamping block is provided on the outer wall of the lower end of the insulator core rod lower segment, and the insulator body lower segment is fixed to the lower installation base by rotating and clamping in the lower clamping groove after passing through the lower sliding groove through the lower clamping block;

[0007] The bottom of the insulator body upper segment is coaxially provided with a plug-in column, the upper end of the insulator body lower segment is coaxially provided with a plug-in buffer groove for plug-in and screw connection of the plug-in column, and the plug-in column and the plug-in buffer groove are connected by a buffer spring to make the compressed spring of the insulator body upper segment pass through the upper installation top plate or the compressed spring of the insulator body lower segment pass through the lower installation base.

[0008] As another optimization scheme of the above-mentioned support insulator, the plug-in column, the buffer spring, the upper clamping block and the lower clamping block are all made of insulating materials.

[0009] As another optimization scheme of the above-mentioned support insulator, a sealing gasket is arranged on the inner peripheral wall of the plug-in buffer groove.

[0010] As another optimization scheme of the above-mentioned support insulator, two upper clamping blocks are arranged on the upper section of the insulator body, two upper sliding grooves and two upper clamping grooves are arranged on the groove wall of the upper installation groove on the upper installation top plate; two lower clamping blocks are arranged on the lower section of the insulator body, and two lower sliding grooves and two lower clamping grooves are arranged on the groove wall of the lower installation groove on the lower installation base.

[0011] As another optimization scheme of the above-mentioned support insulator, the upper clamping block is fixedly arranged on the outer wall close to the upper end surface of the upper section of the insulator body, and the lower clamping block is fixedly arranged on the outer wall close to the lower end surface of the lower section of the insulator body.

[0012] As another optimization scheme of the above-mentioned support insulator, the upper section of the insulator body, the upper clamping block and the plug-in column are integrally formed, and the lower section of the insulator body and the lower clamping block are integrally formed.

[0013] As another optimization scheme of the above-mentioned support insulator, the upper installation top plate and the lower installation base are both fixed on the corresponding tower by bolts.

[0014] As another optimization scheme of the above-mentioned support insulator, the upper section of the insulator body and the lower section of the insulator body both include a core rod and a plurality of umbrella skirts arranged concentrically on the outer periphery of the corresponding core rod.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The upper end of the upper section of the insulator body can pass through the upper sliding groove and be clamped into the upper clamping groove through the rotation of the upper clamping block, and the lower end of the lower section of the insulator body can pass through the lower sliding groove and be clamped into the lower clamping groove through the rotation of the lower clamping block, and the upper section and the lower section of the insulator body are fixed on the tower through the clamping and resisting cooperation of the upper clamping block and the upper clamping groove and the clamping and resisting cooperation of the lower clamping block and the lower clamping groove, so that the upper section and the lower section of the insulator body are fixed on the tower, the insertion column of the upper section of the insulator body can be inserted into the insertion buffer groove of the lower section of the insulator body, the connection between the upper section and the lower section of the insulator body is realized, the upper clamping block can be pulled out of the upper clamping groove and the upper sliding groove through the rotation and extrusion of the spring, the lower clamping block can be pulled out of the lower clamping groove and the lower sliding groove through the rotation and extrusion of the spring, compared with the prior art, the insulator can be quickly disassembled, replaced and installed during maintenance, and in the second aspect, the spring connecting the upper section and the lower section of the insulator body plays a role of elastic support, and the hard damage of the rigid connection of the insulator body under external impact is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a structure schematic view that the upper section of the insulator body and the lower section of the insulator body are respectively clamped on the upper installation top plate and the lower installation base plate.

[0018] Fig. 2 It is a structure schematic view that the upper section of the insulator body is pulled out of the upper installation top plate through the compression spring.

[0019] Fig. 3 It is a structure schematic view that the lower section of the insulator body is pulled out of the lower installation base plate through the compression spring.

[0020] The drawings show that: 1, the upper section of the insulator body, 101, the upper clamping block, 102, the insertion column, 2, the upper installation top plate, 201, the upper clamping groove, 202, the upper sliding groove, 3, the core rod, 4, the umbrella skirt, 5, the lower section of the insulator body, 501, the insertion buffer groove, 502, the buffer spring, 503, the lower clamping block, 6, the lower installation base plate, 601, the lower clamping groove, 602, the lower sliding groove. DETAILED DESCRIPTION

[0021] The technical scheme of the utility model will be further described in detail in combination with specific embodiments, and the parts not described in detail in the following embodiments of the utility model, such as the upper installation top plate and the lower installation base plate being respectively fixed on the corresponding side tower through bolts, are all the prior art known or known by the person skilled in the art.

[0022] A kind of post insulator, such as Figs. 1-3As shown, including the insulator body upper section 1, the insulator body lower section 5, the upper installation top plate 2 and the lower installation base 6, the insulator body upper section 1 is fixed on the corresponding tower through the upper installation top plate 2, and the insulator body lower section 5 is fixed on the corresponding tower through the lower installation base 6.

[0023] The insulator body upper section 1 is composed of a core rod 3, three umbrella skirts 4 arranged on the core rod 3, an upper clamping block 101 arranged on the outer wall of the upper end of the core rod 3, and a plug-in column 102 arranged at the lower end of the core rod 3. The insulator body upper section 1 is integrally formed with the upper clamping block 101 and the plug-in column 102, and the material of the upper clamping block 101 and the plug-in column 102 is the same insulating material as the core rod 3 and the umbrella skirts 4. The three umbrella skirts 4 are concentrically arranged on the outer periphery of the core rod 3, and the spacing distances between the three umbrella skirts 4 are equal. The number of the upper clamping blocks 101 is two, the upper clamping blocks 101 are rectangular blocks, and the upper clamping blocks 101 are symmetrically arranged on the outer wall of the insulator body upper section 1 near the upper end face thereof.

[0024] A upper installation slot is formed in the middle of the lower end face of the upper installation top plate 2 along the longitudinal direction thereof, and the upper end of the insulator body upper section 1 can be inserted into the upper installation slot. Two upper sliding grooves 202 corresponding in number to the two upper clamping blocks 101 are formed on the slot wall of the upper installation slot on the upper installation top plate 2 along the longitudinal direction thereof. The lower end slots of the upper sliding grooves 202 are located on the lower end face of the upper installation top plate 2, and the length and width of the upper sliding grooves 202 are adapted to the length and width of the upper clamping blocks 101 so as to facilitate the insertion or extraction of the upper clamping blocks 101 into or out of the corresponding side upper sliding grooves 202.

[0025] Upper clamping grooves 201 are formed on the slot wall of the upper installation slot at the positions of the upper end slots of the upper sliding grooves 202, and the upper clamping grooves 201 are arranged along the circumferential direction of the upper installation top plate 2 and are in communication with the corresponding upper sliding grooves 202. When it is necessary to clamp and fix the insulator body upper section 1 on the upper installation top plate 2, the insulator body upper section 1 is inserted into the corresponding side upper sliding grooves 202 through the two upper clamping blocks 101 respectively, and is clamped into the upper clamping grooves 201 by rotating the insulator body upper section 1 in the circumferential direction, so as to fix the insulator body upper section 1 on the upper installation top plate 2. Four bolt holes are formed on the upper installation top plate 2, and the four bolt holes are respectively arranged at the positions of the four corners of the upper installation top plate 2. Screws for fixing the upper installation top plate 2 on the corresponding tower are fitted and installed in the four bolt holes.

[0026] The lower section 5 of the insulator body is composed of the core rod 3, the umbrella skirt 4, the lower clamping block 503 and the buffer spring 502. The lower section 5 of the insulator body and the lower clamping block 503 are integrally formed, and the material of the lower clamping block 503 and the buffer spring 502 is the same as the insulating material of the core rod 3 and the umbrella skirt 4. The umbrella skirt 4 is three in number and concentrically arranged on the outer periphery of the corresponding core rod 3. The distance between the three umbrella skirts 4 is equal to the distance between the umbrella skirts 4 on the upper section 1 of the insulator body. The lower clamping block 503 is two in number and rectangular in shape, and symmetrically arranged on the outer side wall of the lower section 5 of the insulator body near the lower end face thereof.

[0027] A lower mounting groove is formed in the middle of the upper end face of the lower mounting base 6, and the lower end of the lower section 5 of the insulator body can be inserted into the lower mounting groove. Two upper sliding grooves 202 are formed on the groove wall of the lower mounting groove in the longitudinal direction, and the two upper sliding grooves 202 are used for sliding the corresponding two lower clamping blocks 503. The lower end opening of the lower sliding groove 602 is located on the upper end face of the lower mounting base 6, and the length and width of the lower sliding groove 602 are matched with the length and width of the lower clamping block 503 to facilitate the sliding of the lower clamping block 503 into or out of the corresponding side lower sliding groove 602.

[0028] A lower clamping groove 601 is formed on the groove wall of the lower mounting groove at the position of the lower end opening of the lower sliding groove 602, and the lower clamping groove 601 is arranged along the circumference of the lower mounting base 6 and communicates with the corresponding lower sliding groove 602. When it is necessary to clamp and fix the lower section 5 of the insulator body on the lower mounting base 6, the lower section 5 of the insulator body is inserted into the corresponding side lower sliding groove 602 through the two lower clamping blocks 503, and is clamped into the lower clamping groove 601 by rotating the lower section 5 of the insulator body in the circumferential direction, so as to fix the lower section 5 of the insulator body on the lower mounting base 6. One bolt hole is formed at each of the four corner positions of the lower mounting base 6, and a bolt for fixing the existing base on the corresponding side tower is fitted and installed in each of the four bolt holes.

[0029] The lower section 5 of the insulator body is provided with an insertion and mounting buffer groove 501 at the upper end thereof in the axial direction. The insertion and mounting buffer groove 501 is a cylindrical shape matched with the insertion column 102, and a sealing gasket (not shown in the figure) is arranged on the inner circumferential wall of the groove opening of the insertion and mounting buffer groove 501. The arrangement of the sealing gasket can prevent air or moisture from entering the insertion and mounting buffer groove 501 and affecting the normal performance of the insulator. The buffer spring 502 is fixed to the bottom of the insertion and mounting buffer groove 501, the lower end of the buffer spring 502 is fixed to the middle of the groove bottom of the insertion and mounting buffer groove 501, and the upper end of the buffer spring 502 is fixedly connected with the lower middle part of the insertion column 102 which is slidingly inserted into the insertion and mounting buffer groove 501.

[0030] When the insulator needs to be overhauled, disassembled or replaced, the upper segment 1 of the insulator body is first rotated circumferentially to make the upper clamping block 101 rotate out of the upper clamping slot 201, and then the upper segment 1 of the insulator body is lowered by compressing the buffer spring 502 through the insertion column 102 to make the upper clamping block 101 pass out of the corresponding upper sliding slot 202, so as to disassemble the upper segment 1 of the insulator body from the upper installation top plate 2. Then, the lower segment 5 of the insulator body is rotated circumferentially to make the lower clamping block 503 rotate out of the lower clamping slot 601, and then the lower segment 5 of the insulator body is raised by compressing the buffer spring 502 to make the lower clamping block 503 pass out of the corresponding lower sliding slot 602, so as to disassemble the lower segment 5 of the insulator body from the lower installation base 6, thereby facilitating the overhauling, disassembling or replacing of the insulator.

Claims

1. A post insulator, characterized by: The insulator body upper section (1) is fixed on the corresponding tower through the upper mounting top plate (2), and the insulator body lower section (5) is fixed on the corresponding tower through the lower mounting base (6); An upper mounting groove is formed on the upper mounting top plate (2) and used for mounting the upper end of the insulator body upper section (1), an upper sliding groove (202) is formed on the groove wall of the upper mounting groove along the longitudinal direction of the upper mounting groove, an upper clamping groove (201) is formed on the groove wall of the upper mounting groove along the circumferential direction of the upper mounting groove, the upper sliding groove (202) and the upper clamping groove (201) are in communication with each other, an upper clamping block (101) is arranged on the outer wall of the upper end of the insulator body upper section (1), and the insulator body upper section (1) is fixed on the upper mounting top plate (2) by rotating and clamping in the upper clamping groove (201) after passing through the upper sliding groove (202) through the upper clamping block (101); A lower mounting groove is formed on the lower mounting base (6) and used for mounting the lower end of the insulator body lower section (5), a lower sliding groove (602) is formed on the groove wall of the lower mounting groove along the longitudinal direction of the lower mounting groove, a lower clamping groove (601) is formed on the groove wall of the lower mounting groove along the circumferential direction of the lower mounting groove, the lower sliding groove (602) and the lower clamping groove (601) are in communication with each other, a lower clamping block (503) is arranged on the outer wall of the lower end of the insulator core rod (3), and the insulator body lower section (5) is fixed on the lower mounting base (6) by rotating and clamping in the lower clamping groove (601) after passing through the lower sliding groove (602) through the lower clamping block (503). The insulator body upper section (1) is coaxially provided with a plug-in column (102) at the bottom, the insulator body lower section (5) is coaxially provided with a plug-in buffer groove (501) for screwing and clamping the plug-in column (102) at the upper end, and the plug-in column (102) and the plug-in buffer groove (501) are connected through a buffer spring (502) to enable the insulator body upper section (1) to compress the spring (502) to pass through the upper mounting top plate (2) or the insulator body lower section (5) to compress the spring (502) to pass through the lower mounting base (6).

2. A post insulator according to claim 1, characterized in that: The plug-in column (102), the buffer spring (502), the upper clamping block (101) and the lower clamping block (503) are all made of insulating materials.

3. A post insulator according to claim 1, characterized in that: A sealing gasket is arranged on the inner circumferential wall of the slot of the plug-in buffer groove (501).

4. A post insulator according to claim 1, characterized in that: The insulator body upper section (1) is provided with two upper clamping blocks (101), the groove wall of the upper mounting groove on the upper mounting top plate (2) is provided with two upper sliding grooves (202) and an upper clamping groove (201); the insulator body lower section (5) is provided with two lower clamping blocks (503), and the groove wall of the lower mounting groove on the lower mounting base (6) is provided with two lower sliding grooves (602) and a lower clamping groove (601).

5. A post insulator according to claim 1, characterized in that: The upper clamping block (101) is fixedly arranged on the outer wall close to the upper end face of the insulator body upper section (1), and the lower clamping block (503) is fixedly arranged on the outer wall close to the lower end face of the insulator body lower section (5).

6. A post insulator according to claim 1, characterized in that: The insulator body upper section (1), the upper clamping block (101) and the plug-in column (102) are in an integral molding structure, and the insulator body lower section (5) and the lower clamping block (503) are in an integral molding structure.

7. A post insulator according to claim 1, characterized in that: The upper mounting top plate (2) and the lower mounting base (6) are both fixed on the corresponding tower through bolts.

8. A post insulator according to claim 1, characterized in that: The upper segment (1) and the lower segment (5) of the insulator body each comprise a core rod (3) and a plurality of shed segments (4) arranged concentrically around the outer periphery of the corresponding core rod (3).

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