Locking type novel column insulator

Abstract

The utility model discloses a locking type novel column insulator, which comprises an insulator main body and a wire fixing device integrally connected with the top of the insulator main body, a wire fixing hole is formed in the wire fixing device, the wire fixing device further comprises an insulating baffle plate with a T-shaped cross section, the insulating baffle plate is partially arranged in an insulating baffle plate accommodating structure, a channel is formed in the bottom of the insulating baffle plate accommodating structure, and the insulating baffle plate can move up and down in the insulating baffle plate accommodating structure; the insulation baffle clamping groove just accommodates the bottom of the insulation baffle; the rotary switch device is arranged on the insulation baffle and used for switching the insulation baffle to be in a locking state or a free state. The rotary switch device controls the insulation baffle to move freely, the insulation baffle is pushed upwards to open the wire fixing hole to place a wire, the insulation baffle is pulled downwards to fix the wire in the wire fixing hole, the rotary switch device controls the insulation baffle to be locked, and fixing of the wire is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric power devices, and particularly relates to a new type of column insulator with a locking function. Background Technique

[0002] The statements in this part only provide background technical information related to the utility model, and do not necessarily constitute prior art.

[0003] The basic function of a porcelain column insulator is to support and fix the wire, and provide electrical insulation through the insulating body to prevent the wire current from flowing into the ground. At present, when erecting wires for wire binding in medium and low voltage distribution networks or when binding wires after replacing insulators, the double cross top binding method is commonly used. This method has extremely cumbersome steps and is not conducive to the operation of pole workers during power construction or maintenance, especially not conducive to live maintenance operations. Live working is different from power-off maintenance. Workers need to wear personal insulation protection equipment and use long-handled insulation operation tools at the top of the pole to work in a live environment. At this time, the wire is live. In order to ensure the efficiency and safety of live maintenance operations, at least two people need to cooperate in the operation to wind, bind and fasten. The operation difficulty is extremely high, the binding quality is difficult to guarantee, and it is easy to pose hidden dangers to the operation and maintenance of line equipment.

[0004] Patent CN209496670U discloses a portable column insulator wire fixing clip. The pin is pulled out and the pressing line cover plate is turned to the left. Then the fixing ring is sleeved on the neck of the column insulator, and the pressing line cover plate is turned to the right so that the second pin hole on the pressing line cover plate can be aligned with the first pin hole on the right connecting block. Finally, the pin is inserted. At this time, the wire is tightly pressed in the semi-circular limiting groove, and an insulating layer is provided on the inner wall of the semi-circular limiting groove. However, this method is still not simplified enough during operation, and only setting the insulating layer is difficult to ensure the safety of the operation and maintenance of line equipment. Summary of the Utility Model

[0005] Aiming at the above problems, the utility model provides a new type of column insulator with a locking function. The wire is fixed through the insulator wire fixing hole and the insulating push-pull baffle, which can replace the traditional complex wire binding method, simplify the complicated wire binding or wire removal process when erecting wires or replacing insulators, is applicable to the power-off maintenance or live working mode of the distribution network, and operation scenarios such as wire erection, cross-arm or insulator replacement, effectively reducing the operation difficulty, shortening the operation time, and improving the quality of maintenance or construction operations.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A new type of locking column insulator includes an insulator body and a wire fixing device integrally connected to the top of the insulator body. A wire fixing hole is provided inside the wire fixing device at a position slightly below the center, and the wire fixing hole is used to fix the wire. An insulating baffle receiving structure in the shape of a cuboid is opened inside the wire fixing device at a position slightly above the center. One side of the wire fixing device is a semi-open structure, which enables the wire to be clamped into the internal wire fixing hole from the open side. The wire fixing device further includes an insulating baffle with a T-shaped cross-section, an insulating baffle slot, and a rotary switch device. The insulating baffle is partially arranged in the insulating baffle receiving structure, and a channel is opened at the bottom of the insulating baffle receiving structure, allowing the insulating baffle to move up and down inside the insulating baffle receiving structure. The insulating baffle slot is arranged on the bottom surface of the semi-open structure and is opposite to the channel at the bottom of the insulating baffle receiving structure. The bottom end of the insulating baffle is dimensionally consistent with the insulating baffle slot, and the insulating baffle slot exactly accommodates the bottom end of the insulating baffle. The rotary switch device is arranged on the insulating baffle and is used to switch the insulating baffle between the locked state and the free state.

[0008] Preferably, the semi-open structure has the bottom end of the wire fixing hole as its bottom surface, and there is no communication between the top surface of the semi-open structure and the bottom of the insulating baffle receiving structure. There is a first thick plate with a certain thickness. The longitudinal dimension of the GK section represents the plate thickness of the first thick plate, and the horizontal plane where point G is located is the top surface of the semi-open structure.

[0009] Preferably, the wire fixing hole is dimensionally consistent with the wire. The wire fixing hole adopts a wavy pattern with a large coefficient of friction, and the insulating material inside the hole has a resilient property to help firmly lock the wire.

[0010] Preferably, the insulating baffle is divided into five sections, namely AB, BC, CD, DE, and EF sections. The AB section is the insulating baffle restraint section, the BC section is the insulating baffle upward movement section, the CD section is the insulating baffle switch section, the DE section is the insulating baffle downward movement section, and the EF section is the insulating baffle locking section.

[0011] Preferably, the transverse dimension of the AB section of the insulating baffle restraint section is much larger than the transverse dimension of the bottom channel of the insulating baffle receiving structure. The transverse dimension of the bottom channel of the insulating baffle receiving structure is slightly larger than the transverse dimension of the upward movement BC section of the insulating baffle, allowing the upward movement BC section of the insulating baffle to move.

[0012] Preferably, the EF locking section of the insulating baffle is similar in shape and dimension to the insulating baffle slot, and the EF locking section of the insulating baffle can exactly be accommodated by the insulating baffle slot.

[0013] Preferably, the longitudinal dimension of the insulating baffle storage structure is slightly larger than the longitudinal dimension of section AB + the longitudinal dimension of section BC - the longitudinal dimension of section GK, where the longitudinal dimension of section BC - the longitudinal dimension of section GK = the longitudinal dimension of section DE + the longitudinal dimension of section EF; the longitudinal dimension of the semi-open structure = the length dimension of section BC - the longitudinal dimension of section GK + the longitudinal dimension of section CD + the longitudinal dimension of section DE;

[0014] Preferably, the rotary switch device is arranged on the switch section CD of the insulating baffle; the rotary switch device includes a circular handle with a pull ring, and the handle is fixedly connected with a limit adjustable bolt;

[0015] Preferably, the bolt connecting pipe is arranged on the switch section CD of the insulating baffle, and the bolt connecting pipe passes through the insulating baffle and is fixedly connected with the insulating baffle; the limit adjustable bolt can be screwed into the bolt connecting pipe, and the length of the limit adjustable bolt screwed into the bolt connecting pipe can be adjusted by rotating the handle;

[0016] The wire fixing device is also provided with a first fixing hole with internal threads, and the limit adjustable bolt can be screwed into the first fixing hole; preferably, when the end of the limit adjustable bolt far from the handle just reaches the edge of the bolt connecting pipe, the insulating baffle can be freely pushed up and pulled down; when the end of the limit adjustable bolt far from the handle protrudes from the edge of the bolt connecting pipe and is screwed into the first fixing hole, the insulating baffle is locked;

[0017] All components of the locking type new column insulator are made of insulating materials.

[0018] Compared with the prior art, the advantages and positive effects of the present utility model are:

[0019] A locking type new column insulator of the present utility model can control the locking or free movement state of the insulating baffle through the rotary switch device arranged on the insulating baffle; when the insulating baffle is in the free movement state, the wire fixing hole can be opened by pushing up the insulating baffle to place the wire, and then the insulating baffle is pulled down to fix the wire in the wire fixing hole, and finally the insulating baffle is locked by controlling the rotary switch device to realize the fixing of the wire; this fixing method makes the wire unable to pop out of the wire fixing hole when subjected to external force and must be opened by maintenance staff to pop out. The present utility model is convenient for the wire to be incorporated into the wire fixing hole for fixing by pushing and pulling the insulating baffle, and is also convenient for the removal and separation of the wire and the insulator during maintenance, can replace the traditional complex wire tying method, simplifies the complicated wire tying or wire removing process during wire erection or insulator replacement, is applicable to the power distribution network construction wire erection power outage maintenance or live maintenance operation mode, effectively reduces the operation difficulty, shortens the operation time, and improves the maintenance or construction operation quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings of the specification, which form a part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0021] Figure 1 is the front view of the embodiment of the present utility model;

[0022] Figure 2 is the side view of the embodiment of the present utility model;

[0023] Figure 3 is the state diagram of the wire fixing device when the insulating baffle is locked in the embodiment of the present utility model;

[0024] Figure 4 is the state diagram of the wire fixing device when the insulating baffle moves freely in the embodiment of the present utility model;

[0025] In the figure:

[0026] 1 - insulator body, 2 - wire fixing device, 3 - wire, 201 - wire fixing hole, 202 - insulating baffle, 203 - insulating baffle storage structure, 204 - insulating baffle slot, 205 - rotary switch device, 2051 - handle, 2052 - adjustable bolt, 2053 - bolt connection pipe, 2054 - first fixing hole, AB section - insulating baffle restraint section, BC section - insulating baffle upward movement section, CD section - insulating baffle switch section, DE section - insulating baffle downward movement section, EF section - insulating baffle locking section, GK section - first thick plate. Detailed implementation manners

[0027] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanations of the present utility model. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0028] The present utility model will be described in detail below with reference to the accompanying drawings. This embodiment discloses a new type of locking column insulator, as Figure 1 and Figure 2 shown, which includes an insulator body 1, a wire fixing device 2 integrally connected to the top of the insulator body 1. A wire fixing hole 201 is provided in the lower part of the center of the wire fixing device 2, and the wire fixing hole 201 is provided throughout. The wire fixing hole 201 is used to fix the wire 3; an insulating baffle storage structure 203 in the shape of a cuboid is opened in the upper part of the center of the wire fixing device 2; one side of the wire fixing device 2 is a semi - open structure, which can enable the wire 3 to be clamped into the internal wire fixing hole 201 from the open side. As Figure 3As shown, in the wire fixing device 2, the bottom surface of the semi-open structure is the bottom end of the wire fixing hole 201. There is no communication between the top surface of the semi-open structure and the bottom of the insulating baffle receiving structure 203, and there is a first thick plate with a certain thickness. The longitudinal dimension of the GK section represents the plate thickness of the first thick plate, and the horizontal plane where point G is located is the top surface of the semi-open structure. It can be understood that the first thick plate belongs to the wire fixing device 2 and is integrally connected to the wire fixing device 2. The wire fixing device 2 further includes an insulating baffle 202 with a T-shaped cross-section, an insulating baffle slot 204, and a rotary switch device 205. Part of the insulating baffle 202 is arranged in the insulating baffle receiving structure 203. A channel is opened at the bottom of the insulating baffle receiving structure 203, and the insulating baffle 202 can move up and down inside the insulating baffle receiving structure 203. The insulating baffle slot 204 is arranged on the bottom surface of the semi-open structure and is opposite to the channel at the bottom of the insulating baffle receiving structure 203. The bottom end of the insulating baffle 202 fits the size of the insulating baffle slot 204, and the insulating baffle slot 204 can just accommodate the bottom end of the insulating baffle 202. The rotary switch device 205 is arranged on the insulating baffle 202 and is used to switch the insulating baffle 202 between the locked state and the free state.

[0029] The wire fixing hole 201 fits the size of the wire 3. The wire fixing hole 201 adopts a wavy pattern with a large coefficient of friction, and the insulating material inside the hole has a resilient property to help firmly lock the wire 3.

[0030] As Figure 3 , Figure 4 shown, the insulating baffle 202 is divided into five sections, namely AB, BC, CD, DE, and EF sections. Among them, the AB section is the insulating baffle restraint section, the BC section is the insulating baffle upward movement section, the CD section is the insulating baffle switch section, the DE section is the insulating baffle downward movement section, and the EF section is the insulating baffle locking section.

[0031] As Figure 3 shown, the insulating baffle restraint section AB is arranged in the insulating baffle receiving structure 203, and a channel is opened at the bottom of the insulating baffle receiving structure 203. The height dimension of the insulating baffle receiving structure 203 is slightly larger than the longitudinal dimension of the AB section + the longitudinal dimension of the BC section - the longitudinal dimension of the GK section. The longitudinal dimension of the BC section - the longitudinal dimension of the GK section = the longitudinal dimension of the DE section + the longitudinal dimension of the EF section. The longitudinal dimension of the semi-open structure is equal to the sum of the longitudinal dimensions of the BC section - GK section + the CD section + the DE section. This enables the insulating baffle 202 to move up and down between the insulating baffle receiving structure 203 and the semi-open structure. As Figure 3 , Figure 4As shown in the figure, the transverse width of the insulating baffle restraint section AB is greater than the transverse width of the bottom channel of the insulating baffle storage structure 203, which causes the insulating baffle restraint section AB to be constrained within the insulating baffle storage structure 203; the transverse width of the bottom channel of the insulating baffle storage structure 203 is slightly greater than the transverse width of the upward movement BC section of the insulating baffle 202, which facilitates the movement of the upward movement BC section of the insulating baffle 202 between the insulating baffle storage structure 203 and the semi-open structure. That is, the insulating baffle 202 is partially movably arranged within the insulating baffle storage structure 203, and a channel is opened at the bottom of the insulating baffle storage structure 203, and the insulating baffle 202 can move up and down within the insulating baffle storage structure 203.

[0032] As Figure 3 shown in the figure, the shape and size of the EF locking section of the insulating baffle 202 match those of the insulating baffle slot 204, and the longitudinal length and transverse width of the insulating baffle slot 204 are slightly greater than those of the EF locking section of the insulating baffle 202, which enables the EF locking section of the insulating baffle 202 to fall entirely into the insulating baffle slot 204.

[0033] As Figure 3 shown in the figure, a rotary switch device 205 is arranged on the switch section CD of the insulating baffle 202; the rotary switch device 205 includes a handle 2051, and the handle 2051 is fixedly connected to a limit adjustable bolt 2052; there is a bolt connection pipe 2053 on the switch section CD of the insulating baffle 202, the bolt connection pipe 2053 passes through the insulating baffle 202 and is fixedly connected to the insulating baffle 202, and the limit adjustable bolt 2052 can be screwed into the bolt connection pipe 2053, and the length of the limit adjustable bolt 2052 screwed into the bolt connection pipe 2053 can be adjusted by rotating the handle 2051.

[0034] A first fixing hole 2054 is also arranged on the wire fixing device 2, and there is a thread inside the first fixing hole 2054, and the limit adjustable bolt 2052 can be screwed into the first fixing hole 2054; when the end of the limit adjustable bolt 2052 away from the handle 2051 just reaches the edge of the bolt connection pipe 2053 and is not screwed into the first fixing hole 2054, at this time the insulating baffle 202 can be freely pushed up and pulled down; when the end of the limit adjustable bolt 2052 away from the handle 2051 protrudes from the edge of the bolt connection pipe 2053 and is screwed into the first fixing hole 2054, as Figure 3 shown in the figure, at this time the insulating baffle 202 is locked, and the insulating baffle 202 is blocked between the adjustable bolt 2052 and the inner wall of the wire fixing device 2 and cannot be pushed up and pulled down anymore. That is, the rotary switch device 205 is connected to the insulating baffle 202, and the rotary switch device 205 is used to lock the insulating baffle 202.

[0035] The handle 2051 is circular with a pull ring because the staff uses a special insulating operating rod. When the operating rod is sleeved on the pull ring of the handle 2051, the circular handle 2051 can be rotated, enabling the limit adjustable bolt 2052 to rotate, thereby locking or unlocking the insulating baffle 202.

[0036] The limit adjustable bolt 2052 adopts existing limit technology. The limit adjustable bolt 2052 is in the bolt connection pipe 2053 and cannot be completely screwed out of the bolt connection pipe 2053 by rotating the handle 2051. This prevents the limit adjustable bolt 2052 from being screwed out of the bolt connection pipe 2053 when the operator uses the insulating operating rod to sleeve on the pull ring of the handle 2051 and rotate the handle 2051, reducing work efficiency. The end of the limit adjustable bolt 2052 away from the handle 2051 is just at the edge of the bolt connection pipe 2053. At this time, the insulating baffle 202 can be freely pushed up and pulled down. When the insulating baffle 202 is pushed up, the BC upward moving section enters the insulating baffle storage structure 203. The upper end of the CD switch section is exactly at the bottom of the insulating baffle storage structure 203. The plane where point C is located coincides with the plane where point G is located. At this time, the DE downward moving section and the EF locking section also move upward. The bottom end of the EF locking section is just at the upper end of the wire fixing hole 201, and the wire fixing hole 201 is opened at this time.

[0037] When the insulating baffle 202 is pulled down, the BC upward moving section leaves the insulating baffle storage structure 203. The lower end of the CD switch section is just at the upper end of the wire fixing hole 201. At this time, the DE downward moving section and the EF locking section move downward, and the EF locking section completely falls into the insulating baffle card slot 204. At this time, the wire fixing hole 201 is closed.

[0038] Working principle:

[0039] In this utility model, first, by rotating the handle 2051, the end of the limit adjustable bolt 2052 away from the handle 2051 is just at the edge of the bolt connection pipe 2053, and the insulating baffle 202 can be freely pushed up and pulled down. When the insulating baffle 202 is pushed up, the BC upward moving section of the insulating baffle 202 enters the insulating baffle storage structure 203. The upper end of the CD switch section is exactly at the bottom of the insulating baffle storage structure 203. The DE downward moving section and the EF locking section move upward. The bottom end of the EF locking section is just at the upper end of the wire fixing hole 201, opening the wire fixing hole 201. The wire 3 is placed in the wire fixing hole 201 through the semi-open structure.

[0040] Pull down the insulating baffle 202 so that the BC upper moving section of the insulating baffle 202 leaves the insulating baffle storage structure 203, and the lower end of the CD switch section is just at the upper end of the insulating wire fixing hole 201, and the DE lower moving section and the EF locking section move downward, and the EF locking section completely falls into the insulating baffle slot 204, and the wire fixing hole 201 is closed. Under the restraining action of the AB restraining section and the EF locking section, a preliminary locking function can be achieved.

[0041] After the wire fixing hole 201 is closed, the handle 2051 is rotated so that the end of the limit adjustable bolt 2052 away from the handle 2051 protrudes from the edge of the bolt connection tube 2053 and is screwed into the first fixing hole 2054 to lock the insulating baffle 202. At this time, the wire fixing hole 201 is closed, and the insulating baffle 202 cannot move up, down, left, or right, ensuring that the wire 3 is firmly fixed and will not be ejected from the wire fixing hole 201 by external force.

[0042] The utility model is a new type of post insulator with a drop lock, which can control the locking or free moving state of the insulating baffle through a rotary switch device connected to the insulating baffle. When the insulating baffle moves freely, the wire fixing hole can be opened by pushing up the insulating baffle. The staff places the wire through the semi-open structure, and then pulls down the insulating baffle to fix the wire in the wire fixing hole. Finally, the insulating baffle is locked by the rotary switch device to fix the wire. This fixing method prevents the wire from popping out of the wire fixing hole when subjected to external force, and it must be opened by the maintenance staff to pop out. The utility model facilitates the insertion of the wire into the wire fixing hole for fixation by pushing and pulling the insulating baffle, and also facilitates the removal and separation of the wire and the insulator during maintenance. It can replace the traditional complex wire binding method, simplify the complicated wire binding or wire removal process when erecting wires or replacing insulators, and is suitable for power outage maintenance or live operation of the distribution network, effectively reducing the difficulty of operation, shortening the operation time, and improving the quality of maintenance or construction operations.

[0043] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A new type of locking post insulator, characterized in that: The invention comprises an insulator body and a wire fixing device integrally connected with the top of the insulator body; a wire fixing hole is arranged inside the center of the wire fixing device, and the wire fixing hole is used to fix the wire; a rectangular insulating baffle receiving structure is arranged inside the center of the wire fixing device; one side of the wire fixing device is a semi-open structure, which can make the wire clamped into the internal wire fixing hole from the open side; the wire fixing device also comprises an insulating baffle with a T-shaped cross section, an insulating baffle clamping groove, and a rotary switch device; the insulating baffle is partially arranged in the insulating baffle receiving structure, and a channel is opened at the bottom of the insulating baffle receiving structure, and the insulating baffle can move up and down inside the insulating baffle receiving structure; the insulating baffle clamping groove is arranged on the bottom surface of the semi-open structure, and is arranged opposite to the bottom channel of the insulating baffle receiving structure; the bottom end of the insulating baffle is consistent with the size of the insulating baffle clamping groove, and the insulating baffle clamping groove just accommodates the bottom end of the insulating baffle; the rotary switch device is arranged on the insulating baffle, and is used to switch the insulating baffle to a locked state or a free state.

2. A novel locking post insulator as claimed in claim 1, characterized in that: The bottom surface of the semi-open structure is the horizontal plane where the bottom end of the wire fixing hole is located. The top surface of the semi-open structure is not connected to the bottom of the insulating baffle storage structure. It is a first thick plate with a certain thickness. The thickness of the first thick plate is expressed by the longitudinal dimension of the GK segment. The horizontal plane where the G point is located is the top surface of the semi-open structure.

3. A novel locking post insulator as claimed in claim 1, characterized in that: The wire fixing hole is consistent with the size of the wire; the wire fixing hole adopts a wave pattern with a large friction coefficient, and the insulating material in the hole has a rebound property, which helps to firmly lock the wire.

4. A novel locking post insulator as claimed in claim 1, characterized in that: The insulating baffle is divided into five sections, namely AB, BC, CD, DE, and EF; the AB section is the insulating baffle constraint section, the BC section is the insulating baffle upper moving section, the CD section is the insulating baffle switch section, the DE section is the insulating baffle lower moving section, and the EF section is the insulating baffle locking section.

5. A novel locking post insulator as claimed in claim 1, characterized in that: The insulating baffle constraint section AB is arranged in the insulating baffle storage structure, and the lateral dimension of the insulating baffle constraint section AB is much larger than the lateral dimension of the bottom channel of the insulating baffle storage structure; the lateral dimension of the bottom channel of the insulating baffle storage structure is slightly larger than the lateral dimension of the upper movable BC section of the insulating baffle, so that the upper movable BC section of the insulating baffle can move freely in and out of the insulating baffle storage structure.

6. A novel locking post insulator as claimed in claim 1, characterized in that: The EF locking section of the insulating baffle is similar in shape and size to the insulating baffle slot. The longitudinal length and transverse width of the insulating baffle slot are slightly larger than the EF locking section of the insulating baffle. The entire EF locking section of the insulating baffle is accommodated in the insulating baffle slot.

7. A novel locking post insulator as claimed in claim 1, characterized in that: The longitudinal dimension of the insulating baffle storage structure is slightly larger than the longitudinal dimension of segment AB + the longitudinal dimension of segment BC - the longitudinal dimension of segment GK, wherein the longitudinal dimension of segment BC - the longitudinal dimension of segment GK = the longitudinal dimension of segment DE + the longitudinal dimension of segment EF; the longitudinal dimension of the semi-open structure = the longitudinal dimension of segment BC - the longitudinal dimension of segment GK + the longitudinal dimension of segment CD + the longitudinal dimension of segment DE.

8. A novel locking post insulator as claimed in claim 1, characterized in that: The rotary switch device is arranged on the switch section CD of the insulating baffle; the rotary switch device includes a handle, which is fixedly connected to the limit adjustable bolt; the limit adjustable bolt can be screwed into the bolt connecting tube, and the length of the limit adjustable bolt screwed into the bolt connecting tube can be adjusted by rotating the handle; the bolt connecting tube is arranged on the switch section CD of the insulating baffle, and the bolt connecting tube passes through the insulating baffle and is fixedly connected to the insulating baffle.

9. A novel locking post insulator as claimed in claim 8, characterized in that: When the end of the limit adjustable bolt away from the handle is just at the edge of the bolt connecting tube, the insulating baffle can be pushed up and pulled down freely; when the end of the limit adjustable bolt away from the handle protrudes from the edge of the bolt connecting tube and is screwed into the first fixing hole, the insulating baffle is locked.

10. A novel locking post insulator as claimed in claim 1, characterized in that: All components of the novel locking post insulator are made of insulating materials.

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