Column insulator fixing device and replacement auxiliary tool

Abstract

The invention relates to the technical field of column type insulator replacement, discloses a column type insulator fixing device and a replacement auxiliary tool, and aims to improve the safety fixation of a power transmission cable and the replacement efficiency of a column type insulator. The fixing device is composed of a hoop body structure connected with the column type insulator, a wire pressing rod assembly hinged to one side and a locking rod assembly which is locked with the wire pressing rod assembly. Meanwhile, the provided wire support device comprises a detachable hoop supporting rod assembly, a horizontal supporting rod assembly and a vertical supporting rod assembly so that the power transmission cable can be temporarily fixed. On the basis of the fixing device and the wire support device, an operator can safely operate on the ground in the replacement operation of the column type insulator, and the column type insulator is replaced after a space insulation gap is formed between a power transmission cable and the column type insulator, so that the safety and the efficiency of the replacement process are improved, the operation risk is reduced, and the working efficiency is improved. And the replacement of the post insulator without power failure is not needed.

Description

Technical Field

[0001] The invention relates to the technical field of post insulator replacement, and in particular to a post insulator fixing device and a replacement auxiliary tool. Background Art

[0002] Post insulators are an important insulating device in the power system, mainly used to support and insulate wires or cables to ensure their safe and stable operation. After long-term use, post insulators need to be replaced when they are physically damaged, aged and deteriorated, their performance degraded, or when they reach their service life.

[0003] At present, the replacement of post insulators has the following problems:

[0004] First, currently the post insulators and transmission cables are fixed by binding. When the transmission cable is detached from the binding and fixation on the top of the post insulator, the transmission cable may swing in the air, thus posing a certain risk to workers working at heights. Moreover, after the post insulator is replaced, it is necessary to eliminate the defects and then resume binding and fixation, which reduces work efficiency.

[0005] Second, when replacing the pole insulators, in order to ensure the safety of the replacement operation, it is necessary to use an insulating maintenance rack or an insulating platform, and high-altitude workers must use insulating gloves to ensure the safety of the pole insulator replacement process and avoid the risk of power line failure or electric shock. This increases the complexity and restrictions of the operation.

[0006] Third, when some insulation maintenance racks or insulation platforms cannot be used due to environmental conditions, the replacement of post insulators requires power outages. Power outages have a greater impact on power supply, which will affect the power supply to downstream users, especially during peak electricity consumption periods. Extended power outages may cause inconvenience and economic losses.

[0007] In summary, in view of the existing problems in the replacement of post insulators, an effective technical means is urgently needed to improve the efficiency of the replacement of post insulators and ensure the safety of operators. Summary of the invention

[0008] In order to solve the above problems, the present invention provides a post insulator fixing device, which aims to improve the efficiency of replacing the post insulator, ensure the safety of operators, and reduce operation risks.

[0009] The technical solution adopted by the present invention is:

[0010] A post insulator fixing device and a replacement auxiliary tool, comprising a conductor fixing device installed on a post insulator to fix a power transmission cable, and a conductor support device detachably installed on a pole to temporarily fix the power transmission cable;

[0011] The conductor fixing device comprises a hoop structure connected to the post insulator, a conductor pressing rod assembly hingedly mounted on one side of the hoop structure, and a locking rod assembly hingedly mounted on one side of the conductor pressing rod assembly and capable of forming a lock with the other side of the hoop structure;

[0012] The conductor support device comprises a clamp support rod assembly detachably mounted on the pole, a horizontal support rod assembly mounted on the clamp support rod assembly and parallel to the pole tower cross arm, and a vertical support rod assembly detachably connected to the clamp support rod assembly.

[0013] Furthermore, the hoop body structure of the wire fixing device includes a left hoop body and a right hoop body, and the left hoop body and the right hoop body are connected by bolts to form an integral hoop body structure; the outer side of the left hoop body is provided with a hinged mounting seat for matching the wire pressing rod assembly, and the outer side of the right hoop body is provided with a forked locking hook for matching the locking rod assembly.

[0014] Furthermore, the conductor pressure rod assembly includes an L-shaped pressure rod, and a conductor pressure block is installed on the pressure rod through an adjusting bolt; the bent end on one side of the pressure rod is hinged to the hinged mounting seat of the left hoop body, and the other side is formed with a mounting groove for matching the locking rod assembly, so that the pressure rod can be flipped relative to the hoop body structure and the column insulator; the adjusting bolt is installed in the middle of the pressure rod, and is threadedly connected to the pressure rod; the conductor pressure block is installed at the end of the adjusting bolt that passes through the pressure rod toward the column insulator, and is rotatably connected to the adjusting bolt through a bearing, and the conductor pressure block can adjust its position through the adjusting bolt.

[0015] Furthermore, the locking rod assembly includes an unlocking control rod, a locking control rod, and an unlocking pull ring; the unlocking control rod is L-shaped, and is hingedly installed at the mounting groove on the other side of the pushing rod, one end of the unlocking control rod is provided with a hinged mounting groove matching the locking control rod, and the other end is installed with an unlocking pull ring; the locking control rod is S-shaped, one end of which passes through the mounting groove of the pushing rod and is hinged to one end of the unlocking control rod, and the other end is installed with a locking pin matching the forked locking hook; when the locking rod assembly is in a locked state, the intersection point of the locking control rod and the unlocking control rod and the hinge point of the unlocking control rod and the pushing rod are located on the same vertical straight line, and the contact point of the locking pin and the forked locking hook is located on the inner side of the vertical straight line.

[0016] Furthermore, insulating rubber pads are installed at the places where the inner sides of the left and right hoop bodies contact the post insulators, and at the places where the conductor pressing block contacts the transmission cable.

[0017] Furthermore, the clamp support rod assembly includes a first support rod, which is a telescopic rod body, and a first pole clamp is hingedly installed on the bottom end of the first support rod, and a second pole clamp is installed on the rod body section near the bottom end of the first support rod, and a universal joint is installed on the top end of the first support rod to cooperate with the horizontal support rod assembly and the vertical support rod assembly.

[0018] Furthermore, the horizontal support rod assembly includes a horizontal support rod; a universal joint that cooperates with the clamp support rod assembly is installed in the middle of the horizontal support rod, and horizontal extension rods are slidably mounted on both ends; and a wire limiting hook is installed at the end of the horizontal extension rod.

[0019] Furthermore, the vertical support rod assembly includes a vertical support rod, one end of which is equipped with a universal joint that cooperates with the clamp support rod assembly, and the other end of which is equipped with a wire limit seat.

[0020] A post insulator replacement method, based on the post insulator fixing device and replacement auxiliary tool, comprises the following steps:

[0021] Step 1, installing a conductor fixing device on the post insulator, and fixing the transmission cable on the top of the post insulator by installing a conductor pressing rod assembly and a locking rod assembly of the conductor fixing device;

[0022] Step 2: When the column insulator needs to be replaced, install a conductor support device on the pole, and adjust the horizontal support rod assembly and the vertical support rod assembly of the conductor support device so that the transmission cable is located in the conductor limit hook of the horizontal support rod assembly and in the conductor limit seat of the vertical support rod assembly;

[0023] Step 3, fine-tuning the first support rod of the clamp support rod group so that the horizontal support rod assembly and the vertical support rod assembly generate a stable upward support force for the transmission cable;

[0024] Step 4: The operator stands on the ground and operates the unlocking pull ring of the locking rod assembly of the conductor fixing device through the insulating operating rod to unlock the locking rod assembly relative to the hoop structure of the conductor fixing device; after unlocking, the pressing rod of the conductor pressing rod assembly is turned outward by the force of the transmission cable; at this time, a space insulating gap is generated between the transmission cable and the post insulator;

[0025] Step 5: The operator climbs the pole and replaces the post insulator;

[0026] Step 6: The operator stands on the ground and operates the unlocking pull ring of the locking rod assembly of the conductor fixing device through the insulating operating rod to restore the locking of the locking rod assembly and the hoop structure of the conductor fixing device. When locked, the transmission cable passes through the conductor pressing block of the conductor pressing rod assembly and is limited to the top of the post insulator;

[0027] Step 7: dismantle the conductor support device and complete the post insulator replacement operation.

[0028] Beneficial effects of the present invention:

[0029] 1. Improved security

[0030] Stable support: The conductor support device can provide reliable temporary support for the transmission cable during the replacement operation, reducing the safety risks of the operators. Insulated operation: The unlocking and locking operations performed by the insulating operating rod further improve the safety of the operation and reduce the risk of electric shock.

[0031] 2. Improve efficiency

[0032] Convenient installation: Both the conductor fixture and the conductor support device can be quickly installed and removed, shortening the replacement time and improving the work efficiency. Fine-tuning ability: By adjusting the horizontal support rod and the vertical support rod, it can flexibly adapt to the height and position of different cables to ensure smooth operation.

[0033] 3. Enhance adaptability

[0034] Multifunctional design: The post insulator fixture and replacement auxiliary tool are suitable for different types of post insulators and transmission cables, with good versatility and can meet the needs of different projects. Detachability: The detachability of the conductor support device enables it to be used in different occasions and adapt to diverse construction environments.

[0035] 4. Reduce the difficulty of operation

[0036] Simplify the operation process: clear steps guide operators, making replacement operations easier and reducing technical requirements. Reduce manpower requirements: effective support and fixing equipment reduces dependence on manpower, allowing single-person or group operations to be completed smoothly.

[0037] 5. Improve working conditions

[0038] Reduce labor intensity: The support provided by the equipment can reduce the physical burden of operators and improve working comfort. Improve the working environment: During the operation, by effectively fixing and supporting the cables, the surrounding environment is ensured to be clean and safe, and the risks caused by loose cables are reduced.

[0039] 6. Maintain equipment and extend service life

[0040] Reduce loss: Effective fixation and support can reduce the shaking and wear of the transmission cable during the replacement process, and extend the service life of the equipment. Protect insulators: During the replacement process, avoid direct damage to the post insulators, ensuring the integrity of their functions and service life.

[0041] In summary, the post insulator fixing device and replacement auxiliary tool not only improve the safety and efficiency of the replacement operation, but also improve the working conditions and have broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0043] Figure 1 It is a schematic diagram of the post insulator fixing device and the replacement auxiliary tool after installation of the present invention;

[0044] Figure 2 It is a schematic diagram of the post insulator fixing device after installation of the present invention;

[0045] Figure 3 It is a structural schematic diagram of the wire support device of the present invention;

[0046] In the figure, 1. post insulator, 2. transmission cable, 3. conductor fixing device, 4. conductor support device, 5. left hoop body, 6. right hoop body, 7. hinged mounting seat, 8. forked locking hook, 9. top pressure rod, 10. adjusting bolt, 11. conductor pressure block, 12. unlocking control rod, 13. locking control rod, 14. unlocking pull ring, 15. locking pin, 16. first support rod, 17. first pole clamp, 18. second pole clamp, 19. universal joint, 20. horizontal support rod, 21. horizontal extension rod, 22. conductor limit hook, 23. vertical support rod, 24. conductor limit seat. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0048] In view of the existing problems in the replacement of post insulators, this embodiment provides a post insulator fixing device and a replacement auxiliary tool. Figure 1 As shown, the post insulator fixing device and the replacement auxiliary tool include two parts, one is a wire fixing device 3 installed on the post insulator 1 for fixing the transmission cable 2; the other is a wire support device 4 detachably installed on the pole when the post insulator 1 is replaced, and the function of the wire support device 4 is to provide a certain supporting force for the transmission cable 2 and limit the transmission cable 2 to prevent it from swinging in the air when the post insulator 1 is replaced.

[0049] In order to facilitate understanding of the specific structure and use of the post insulator fixing device and replacement auxiliary tool, the following structure and working principle are described:

[0050] Wire fixture 3:

[0051] like Figure 1 and Figure 2 As shown, the conductor fixing device 3 includes a hoop structure connected to the post insulator 1, a conductor pressing rod assembly hingedly installed on one side of the hoop structure, and a locking rod assembly hingedly installed on one side of the conductor pressing rod assembly and capable of forming a lock with the other side of the hoop structure.

[0052] Among them, the hoop body structure of the wire fixing device 3 includes a left hoop body 5 and a right hoop body 6, both of which are semicircular structures, and the left hoop body 5 and the right hoop body 6 are connected by bolts to form an integral hoop body structure; the outer side of the left hoop body 5 is provided with a hinged mounting seat 7 for matching the wire pressing rod assembly, and the outer side of the right hoop body 6 is provided with a forked locking hook 8 for matching the locking rod assembly.

[0053] The conductor pressure rod assembly comprises an L-shaped pressure rod 9, and a conductor pressure block 11 is installed on the pressure rod 9 through an adjusting bolt 10; the bent end on one side of the pressure rod 9 is hinged to the hinged mounting seat 7 of the left hoop body 5, and the pressure rod 9 can be flipped relative to the hoop body structure and the column insulator 1 through the hinge, and the other side of the pressure rod 9 is formed with a mounting groove for matching the locking rod assembly installation; the adjusting bolt 10 is installed in the middle of the pressure rod 9, and is threadedly connected with the pressure rod 9; the conductor pressure block 11 is installed at the end of the adjusting bolt 10 passing through the pressure rod 9 in the direction of the column insulator 1; in order to achieve guidance, four column structures are formed on the top of the conductor pressure block 11, and the conductor pressure block 11 is rotatably connected to the adjusting bolt 10 through a bearing, and the conductor pressure block 11 can adjust its position through the adjusting bolt 10.

[0054] The locking rod assembly includes an unlocking control rod 12, a locking control rod 13, and an unlocking pull ring 14; the unlocking control rod 12 is L-shaped, and is hingedly installed at the mounting groove on the other side of the pushing rod 9. One end of the unlocking control rod 12 is provided with a hinged mounting groove matching the locking control rod 13, and the other end is provided with an unlocking pull ring 14; the locking control rod 13 is S-shaped, one end of which passes through the mounting groove of the pushing rod 9 and is hinged with one end of the unlocking control rod 12, and the other end is provided with a locking pin 15 matching the forked locking hook 8; when the locking rod assembly is in a locked state, the intersection point of the locking control rod 13 and the unlocking control rod 12 and the hinge point of the unlocking control rod 12 and the pushing rod 9 are located on the same vertical straight line, and the contact point of the locking pin 15 and the forked locking hook 8 is located on the inner side of the vertical straight line.

[0055] Working principle of wire fixing device 3:

[0056] When the transmission cable 2 needs to be fixed, the top pressure rod 9 is turned over to Figure 2 In the position shown, after the top pressure rod 9 is turned over, the conductor pressure block 11 presses the transmission cable 2 into the top groove of the post insulator 1. The degree of compression can be adjusted by adjusting the position of the conductor pressure block 11 by adjusting the bolt 10 to achieve the degree of compression; after the top pressure rod 9 is turned over, the unlocking pull ring 14 is operated to pull it outward to Figure 2 In the position shown, the unlocking control rod 12 rotates, thereby driving the locking control rod 13 to swing, so that the locking pin 15 enters the forked lock hook 8. On the contrary, when the power transmission cable 2 needs to be disengaged, the unlocking pull ring 14 is manipulated to swing it inward, and the locking pin 15 can be disengaged from the forked lock hook 8, so that the pressing rod 9 can be turned in the opposite direction, and the power transmission cable 2 can be moved out from the groove at the top of the post insulator 1.

[0057] Furthermore, in order to avoid damaging the post insulator 1 and the transmission cable 2 and to increase insulation, in this embodiment, insulating rubber pads are installed at the contact points between the inner sides of the left hoop body 5 and the right hoop body 6 and the post insulator 1 and at the contact points between the conductor pressing block 11 and the transmission cable 2.

[0058] Wire support device 4:

[0059] like Figure 1 and Figure 3 As shown, the conductor support device 4 includes a clamp support rod assembly detachably mounted on the pole, a horizontal support rod assembly mounted on the clamp support rod assembly and parallel to the pole tower cross arm, and a vertical support rod assembly detachably connected to the clamp support rod assembly.

[0060] The clamp support rod assembly includes a first support rod 16, which is a telescopic rod body, and a first pole clamp 17 is hingedly installed at the bottom end of the first support rod 16. A second pole clamp 18 is installed at the rod body section near the bottom end of the first support rod 16. The first support rod 16 can be tiltably installed on the pole through the first pole clamp 17 and the second pole clamp 18, and forms a triangular stable structure with the pole. Considering the installation of the horizontal support rod assembly and the vertical support rod assembly, as shown in FIG. Figure 3 As shown, a universal joint 19 is installed at the top end of the first support rod 16 to cooperate with the horizontal support rod assembly and the vertical support rod assembly.

[0061] like Figure 3As shown, the horizontal support rod assembly is parallel to the pole tower cross arm, and the horizontal support rod assembly includes a horizontal support rod 20; a universal joint 19 that cooperates with the clamp support rod assembly is installed in the middle of the horizontal support rod 20, and horizontal extension rods 21 are slidably mounted on both ends; and a wire limit hook 22 is installed at the end of the horizontal extension rod 21. The vertical support rod assembly can extend to the high-position power transmission cable 2, and the vertical support rod assembly includes a vertical support rod 23, one end of the vertical support rod 23 is installed with a universal joint 19 that cooperates with the clamp support rod assembly, and the other end is installed with a wire limit seat 24. Among them, the wire limit hook 22 and the wire limit seat 24 are both used to limit the power transmission cable 2 to prevent it from swinging in the air after being separated from the wire fixing device 3.

[0062] The conductor support device 4 is only installed when the post insulator 1 is replaced, and needs to be removed after the post insulator 1 is replaced. The conductor limit hook 22 and the conductor limit seat 24 of the conductor support device 4 limit the transmission cable 2 during the replacement of the post insulator 1 to prevent it from swinging in the air after being separated from the conductor fixing device 3. Figure 1 As shown, by adjusting the fixing positions of the first pole clamp 17 and the second pole clamp 18 with the pole, the conductor support device 4 can generate an upward supporting force on the three groups of transmission cables 2. The upward supporting force helps to unlock the conductor fixing device 3, so that the transmission cables 2 can quickly escape from the top groove of the column insulator 1 and form a certain spatial insulation gap.

[0063] Based on the above post insulator fixing device and replacement auxiliary tool, this embodiment also proposes a post insulator replacement method, which includes the following steps:

[0064] Step 1, installing a conductor fixing device 3 on a post insulator 1, and fixing a transmission cable 2 on the top of the post insulator 1 by installing a conductor pressing rod assembly and a locking rod assembly of the conductor fixing device 3;

[0065] Step 2, when the column insulator 1 needs to be replaced, a conductor support device 4 is installed on the pole, and the horizontal support rod assembly and the vertical support rod assembly of the conductor support device 4 are adjusted so that the transmission cable 2 is located in the conductor limit hook 22 of the horizontal support rod assembly and in the conductor limit seat 24 of the vertical support rod assembly;

[0066] Step 3, fine-tuning the first support rod 16 of the clamp support rod group so that the horizontal support rod assembly and the vertical support rod assembly generate a stable upward supporting force for the power transmission cable 2;

[0067] Step 4: The operator stands on the ground and operates the unlocking pull ring 14 of the locking rod assembly of the conductor fixing device 3 through the insulating operating rod, so that the locking rod assembly is unlocked relative to the hoop structure of the conductor fixing device 3; after unlocking, the pressing rod 9 of the conductor pressing rod assembly is turned outward by the force of the transmission cable 2; at this time, the transmission cable 2 is moved upward by the supporting force of the conductor support device 4, and a space insulating gap is generated between the transmission cable 2 and the post insulator 1;

[0068] Step 5: The operator climbs the pole and replaces the post insulator 1;

[0069] Step 6: The operator stands on the ground and operates the unlocking pull ring 14 of the locking rod assembly of the conductor fixing device 3 through the insulating operating rod to restore the locking of the locking rod assembly and the hoop structure of the conductor fixing device 3. When locked, the transmission cable 2 passes through the conductor pressing block 11 of the conductor pressing rod assembly and is limited to the top of the post insulator 1;

[0070] Step 7, dismantle the conductor support device 4 to complete the replacement operation of the post insulator 1.

[0071] Furthermore, this embodiment also verifies the effect of the above-mentioned insulator replacement method:

[0072] Calculated according to the power outage maintenance method of one operating range: for example, for a 10kV distribution line, the load current is calculated as 120A, the power factor is 0.95, and the power outage time is 4 hours. The power loss is W = P × T = (1.732 × 10 × 120 × 0.95) × 4 = 7897.92 (kW / h). If the insulator replacement method provided in this embodiment is adopted, continuous power supply can be achieved, the power supply reliability rate and the integrity of the power supply enterprise can be improved, the complaint rate can be greatly reduced, industrial users can create more output value, and residential users can improve their quality of life.

[0073] In summary, the post insulator fixing device and replacement auxiliary tool, as well as the post insulator replacement method, can effectively solve the problem of live replacement of post insulators by the insulating rod operation method, solve various problems encountered during live operation, scientifically change the traditional operation method, and reduce the power outage time and scope of users. Due to the flexible operation mode, the line can be guaranteed to be carried out without power outage, shortening the cumbersome power outage procedures, and the equipment can be arranged immediately for fault elimination, installation, and replacement work, avoiding violations of operation regulations and safety risks. It can even avoid equipment failure and personal electric shock caused by live replacement of post insulators. In order to improve the working time efficiency and safety performance of the operation, the reliability of distribution line operation and maintenance is improved. The post insulator fixing device and replacement auxiliary tool, as well as the post insulator replacement method improve the traditional insulating glove operation method used to replace insulators, reduce the manpower and material resources, improve the reliability of power supply, and reduce the power outage time and scope of users.

[0074] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A post insulator fixing device and a replacement auxiliary tool, characterized in that: It includes a conductor fixing device installed on a column insulator to fix the transmission cable, and a detachable conductor support device installed on a pole to temporarily fix the transmission cable; The conductor fixing device comprises a hoop structure connected to the post insulator, a conductor pressing rod assembly hingedly mounted on one side of the hoop structure, and a locking rod assembly hingedly mounted on one side of the conductor pressing rod assembly and capable of forming a lock with the other side of the hoop structure; The conductor support device comprises a clamp support rod assembly detachably mounted on the pole, a horizontal support rod assembly mounted on the clamp support rod assembly and parallel to the pole tower cross arm, and a vertical support rod assembly detachably connected to the clamp support rod assembly.

2. The post insulator fixing device and replacement auxiliary tool according to claim 1, characterized in that: The hoop body structure of the wire fixing device comprises a left hoop body and a right hoop body, and the left hoop body and the right hoop body are connected by bolts to form an integral hoop body structure; a hinged mounting seat for matching the wire pressing rod assembly is provided on the outer side of the left hoop body, and a forked locking hook for matching the locking rod assembly is provided on the outer side of the right hoop body.

3. The post insulator fixing device and replacement auxiliary tool according to claim 2, characterized in that: The conductor pressure rod assembly comprises an L-shaped pressure rod, and a conductor pressure block is installed on the pressure rod through an adjusting bolt; a bent end on one side of the pressure rod is hinged to a hinged mounting seat of a left hoop body, and a mounting groove for matching the locking rod assembly is formed on the other side thereof, so that the pressure rod can be flipped relative to the hoop body structure and the column insulator; an adjusting bolt is installed in the middle of the pressure rod, and is threadedly connected to the pressure rod; the conductor pressure block is installed at the end of the adjusting bolt that passes through the pressure rod toward the column insulator, and is rotatably connected to the adjusting bolt through a bearing, and the conductor pressure block can adjust its position through the adjusting bolt.

4. The post insulator fixing device and replacement auxiliary tool according to claim 3, characterized in that: The locking rod assembly includes an unlocking control rod, a locking control rod, and an unlocking pull ring; the unlocking control rod is L-shaped, and is hingedly installed at the mounting groove on the other side of the pushing rod, one end of the unlocking control rod is provided with a hinged mounting groove matching the locking control rod, and the other end is installed with an unlocking pull ring; the locking control rod is S-shaped, one end of which passes through the mounting groove of the pushing rod and is hinged with one end of the unlocking control rod, and the other end is installed with a locking pin matching the forked locking hook; when the locking rod assembly is in a locked state, the intersection point of the locking control rod and the unlocking control rod and the hinge point of the unlocking control rod and the pushing rod are located on the same vertical straight line, and the contact point of the locking pin and the forked locking hook is located on the inner side of the vertical straight line.

5. The post insulator fixing device and replacement auxiliary tool according to claim 3, characterized in that: Insulating rubber pads are installed at the places where the inner sides of the left hoop body and the right hoop body contact the post insulator, and at the places where the conductor pressing block contacts the transmission cable.

6. The post insulator fixing device and replacement auxiliary tool according to claim 1, characterized in that: The clamp support rod assembly includes a first support rod, which is a telescopic rod body, and a first pole clamp is hingedly installed on the bottom end of the first support rod. A second pole clamp is installed on the rod body section near the bottom end of the first support rod, and a universal joint is installed on the top end of the first support rod to cooperate with the horizontal support rod assembly and the vertical support rod assembly.

7. The post insulator fixing device and replacement auxiliary tool according to claim 1, characterized in that: The horizontal support rod assembly comprises a horizontal support rod; a universal joint matching with the clamp support rod assembly is installed in the middle of the horizontal support rod, and horizontal extension rods are slidably mounted on both ends; and a wire limiting hook is installed at the end of the horizontal extension rod.

8. The post insulator fixing device and replacement auxiliary tool according to claim 1, characterized in that: The vertical support rod assembly comprises a vertical support rod, one end of which is provided with a universal joint matched with the clamp support rod assembly, and the other end of which is provided with a wire limiting seat.

9. A post insulator replacement method, the post insulator replacement method is based on the post insulator fixing device and replacement auxiliary tool according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1, installing a conductor fixing device on the post insulator, and fixing the transmission cable on the top of the post insulator by installing a conductor pressing rod assembly and a locking rod assembly of the conductor fixing device; Step 2: When the column insulator needs to be replaced, install a conductor support device on the pole, and adjust the horizontal support rod assembly and the vertical support rod assembly of the conductor support device so that the transmission cable is located in the conductor limit hook of the horizontal support rod assembly and in the conductor limit seat of the vertical support rod assembly; Step 3, fine-tuning the first support rod of the clamp support rod group so that the horizontal support rod assembly and the vertical support rod assembly generate a stable upward support force for the transmission cable; Step 4: The operator stands on the ground and operates the unlocking pull ring of the locking rod assembly of the conductor fixing device through the insulating operating rod to unlock the locking rod assembly relative to the hoop structure of the conductor fixing device; after unlocking, the pressing rod of the conductor pressing rod assembly is turned outward by the force of the transmission cable; at this time, a space insulating gap is generated between the transmission cable and the post insulator; Step 5: The operator climbs the pole and replaces the post insulator; Step 6: The operator stands on the ground and operates the unlocking pull ring of the locking rod assembly of the conductor fixing device through the insulating operating rod to restore the locking of the locking rod assembly and the hoop structure of the conductor fixing device. When locked, the transmission cable passes through the conductor pressing block of the conductor pressing rod assembly and is limited to the top of the post insulator; Step 7: dismantle the conductor support device and complete the post insulator replacement operation.

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