Charged replacement jumper insulator string conductor side fixture

Abstract

The application discloses a side clamp for replacing a jumper wire insulator string conductor, which comprises a side clamp, the side clamp is clamped at the root position of a bowl head, end sleeves are arranged at the first and last ends of the side clamp and the bending position of the side clamp, insulating ropes are connected in the end sleeves, a gear is rotatably connected to the front side of the side clamp, the gear can be driven to rotate through an insulating rod, a pin column and a guide rod are arranged on the front side of the side clamp, a gear slot is formed in the pin column, the gear is engaged with the gear slot, a protruding plate is arranged on the outer surface of the pin column, and a spring is arranged on the outer side of the guide rod and surrounds the guide rod. After the side clamp is installed on the bowl head, an operator can hoist the side clamp by using the insulating ropes, the position of the bowl head can be righted on the conductor clamp, one operator can hang a new insulator string on the bowl head after the bowl head is righted, the number of operators on the tower and the operation time are reduced, and the work efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of power construction tools technology, specifically a live-line replacement jumper insulator string conductor side clamp. Background Technology

[0002] In transmission lines, tension towers and angle towers all require jumpers for transition. To prevent wind deflection and other reasons, insulator strings are used to fix the jumpers. Various insulator strings used in the operation of transmission lines lose their insulation performance due to long-term exposure to the atmosphere and the effects of lightning strikes, pollution and other factors, and need to be replaced. The top of the insulator string is installed on the crossarm of the tower. By installing cups on the conductors of the insulator string and fixing the cups to the conductor clamps of the jumper, the jumper can be hung under the crossarm of the tower.

[0003] Patent CN208508464U discloses a bowl-shaped mounting plate, including a mounting plate with a U-shaped opening inside. Symmetrical bolt mounting holes are provided on both sides of the bottom of the U-shaped opening. The two bolt mounting holes are fixedly connected by fastening bolts and nuts. A pin hole is fixed on one side of the nut. A bowl-shaped base is fixedly provided at the top of the mounting plate. An inverted T-shaped groove is provided inside the bowl-shaped base. A WS-type locking pin is fixed at the bottom of the inverted T-shaped groove. Through holes are provided on both sides of the bowl-shaped base. A crossbar is inserted into each of the two through holes. One end of each crossbar is rotatably connected to a connecting block via a first rotating shaft. A second rotating shaft is provided inside each of the two connecting blocks. A return spring is sleeved on the surface of the second rotating shaft. The two ends of the two second rotating shafts are fixedly connected to the front and rear sides of the bowl-shaped base, respectively. This patent can prevent the ball head of the insulator from falling off the cup head mounting plate. Patent CN215185765U discloses a cup head mounting plate, including a cup head seat and a mounting slot formed in the cup head seat. Tightening slots are provided on both sides of the cup head seat, and a screw is provided in the tightening slot. The screw and the tightening slot are threaded together. The tightening slot extends from the outside to the inside of the cup head seat. A compression spring is provided at the end of the screw. The tightening slot is located at the upper end of the slot. This patent improves the stability of the ball head hanging ring in the mounting slot by setting a screw, tightening slot and compression spring on the cup head seat. After the ball head hanging ring is placed in the mounting slot, the screw is pushed inward by rotating the screw. Then, the ball head hanging ring is pressed by the action of the compression spring. This makes it more secure and reliable. In addition, a corresponding anti-slip layer and anti-slip protrusion are set on the arc section of the mounting slot to further improve the firmness between the ball head hanging ring and the mounting slot.

[0004] When replacing jumper insulator strings with the aforementioned cup-shaped heads under energized conditions, the traditional method is to use the ground potential method to replace the insulator strings under energized conditions. This method uses an insulating rope as a load-bearing tool to transfer the force on the insulator string. However, this can cause the cup-shaped head to sag due to its own weight after the insulator detaches, making it difficult to straighten the cup-shaped head. In addition, when replacing the insulator string, one person needs to straighten the cup-shaped head while another person attaches the new insulator to the cup-shaped head. This complicated operation increases the number of workers on the tower and leads to increased risks.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide a live replacement jumper insulator string conductor-side clamp to solve the above-mentioned problems in the prior art.

[0007] To achieve the above objectives, the present invention provides a live-line replacement jumper insulator string conductor side clamp, comprising a side clamp that is clamped at the root of the cup head. The side clamp is bent into a U-shape from the middle. End sleeves are provided at both ends of the side clamp and at the bend of the side clamp. An insulating rope is threaded through the end sleeves. A gear is rotatably connected to the front surface of the side clamp. The gear can be driven to rotate by an insulating rod. A pin is also slidably connected to the front surface of the side clamp. A toothed groove is formed on the side surface of the pin. The gear meshes with the toothed groove. A protrusion is provided on the outer surface of the pin. A guide rod is fixed to the outside of the side clamp. The guide rod passes through the protrusion, and a spring is sleeved on the outside of the guide rod.

[0008] In the technical solution of the present invention, the side clamp has a first clamping cavity and a second clamping cavity formed sequentially from the inside to the outside from the bending point. The width of the second clamping cavity is greater than the width of the first clamping cavity and less than the width of the head of the bowl. When the bowl is a single bowl, the root of the single bowl can be inserted into the first clamping cavity. When the bowl is a double bowl, the root of the double bowl can be inserted into the second clamping cavity.

[0009] In the technical solution of the present invention, a pair of protrusions are fixed on the front surface of the side clamp near the end sleeve, the gear is clamped between the two protrusions, the gear is keyed to the middle of the gear and connected to the sleeve shaft, the sleeve shaft passes through the protrusion and is rotatably connected to the protrusion.

[0010] In the technical solution of the present invention, a sliding hole is provided on the surface of the side clamp located on the right side of the gear. The sliding hole is connected to the second clamping cavity. The pin is inserted into the sliding hole and slidably connected to the side clamp.

[0011] In the technical solution of the present invention, the guide rod is located on the right side of the pin, the end of the guide rod is fixed on the side clamp, the head end of the guide rod is fixed with a baffle, the head end of the spring abuts against the baffle, and the spring is in a compressed state on the outside of the guide rod.

[0012] In the technical solution of the present invention, the end of the pin passes through the front end of the side clamp and abuts against the inner wall of the rear end of the second clamping cavity. The end of the pin is fixed with a stop plate, and the outer diameter of the stop plate is larger than the outer diameter of the pin.

[0013] In the technical solution of the present invention, a sleeve hole is provided on the convex plate, the guide rod passes through the sleeve hole, and the end of the spring abuts against the convex plate.

[0014] In the technical solution of the present invention, a hexagonal hole with a through hole is provided in the middle of the sleeve shaft, and a hexagonal post is provided at the bottom end of the insulating rod. The hexagonal post can be inserted into the hexagonal hole. When the insulating rod is rotated, the insulating rod drives the sleeve shaft to rotate together through the hexagonal post.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0016] 1. In this invention, by setting a side clamp, after the side clamp is installed on the bowl head, the operator can use an insulating rope to lift the side clamp to straighten the position of the bowl head on the wire clamp, thus preventing the bowl head from naturally sagging under the action of gravity.

[0017] 2. In this invention, by using side clamps and insulating ropes to straighten the insulator head, a single worker can attach a new insulator string to the insulator head after it has been straightened, thus reducing the number of workers on the tower and the working time, and improving work efficiency.

[0018] 3. In this invention, the bowl head is fixed by using an insulating rope to suspend the side clamp, which can prevent the phenomenon of rope slippage that occurs when the insulating rope is directly tied to the insulator string in the traditional working method. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the side clamp installed on the single-piece bowl head according to the present invention;

[0020] Figure 2 This is a structural diagram illustrating the installation of a side clamp on the double-bowl head according to the present invention;

[0021] Figure 3 This is a structural diagram of the side clamp in this invention;

[0022] Figure 4 This is an exploded view of the side clamp in this invention;

[0023] Figure 5 This is a partial structural diagram of the side clamp in this invention;

[0024] Figure 6 This is a structural diagram of the gear in this invention;

[0025] Figure 7 This is a structural diagram of the guide rod in this invention;

[0026] Figure 8 This is a structural diagram of the pin in this invention;

[0027] Figure 9 This is a structural diagram of the insulating rod in this invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1-Side clamp; 11-First clamping cavity; 12-Second clamping cavity; 13-End sleeve; 131-Hanging hole; 14-Protrusion; 15-Gear; 151-Sleeve shaft; 152-Hexagonal hole; 16-Sliding hole; 17-Guide rod; 171-Baffle; 172-Spring; 18-Pin; 181-Gear groove; 182-Protruding plate; 183-Sleeve hole; 184-Butt plate;

[0030] 2-bowl head;

[0031] 3-Insulating rope;

[0032] 4-Insulating rod; 41-Hexagonal post. Detailed Implementation

[0033] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0034] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0035] Reference Figures 1-9 The live replacement jumper insulator string conductor side clamp of the present invention includes a side clamp 1, which is clamped at the root position of the cup head 2. The side clamp 1 is bent into a U shape from the middle. The inside of the side clamp 1 is formed with a first clamping cavity 11 and a second clamping cavity 12 from the inside to the outside of the bend.

[0036] When the bowl head 2 is a single bowl head, the root of the single bowl head can be inserted into the first clamping cavity 11, so that the single bowl head 2 can be inserted into the first clamping cavity 11 from the opening of the side clamp 1.

[0037] When the bowl head 2 is a double bowl head, the base of the double bowl head can be inserted into the second clamping cavity 12, so that the double bowl head 2 can be inserted into the second clamping cavity 12 from the opening of the side clamp 1.

[0038] In this invention, the width of the second clamping cavity 12 is greater than the width of the first clamping cavity 11, and the width of the second clamping cavity 12 is less than the width of the head of the bowl 2. This ensures that the side clamp 1 can be locked at the root of the bowl 2 regardless of whether it is inserted into the single or double bowl 2, preventing the head of the bowl 2 from coming out of the side clamp 1 due to passing through it.

[0039] Specifically, end sleeves 13 are provided at both ends of the side clamp 1 and at the bend of the side clamp 1. The end sleeves 13 are provided with hanging holes 131. An insulating rope 3 is threaded through the end sleeves 13 and passes through the hanging holes 131. By suspending the insulating rope 3 on the iron tower, the insulating rope 3 can suspend the side clamp 1, so that the side clamp 1 can straighten the bowl head 2.

[0040] Furthermore, a gear 15 is rotatably connected to the front surface of the side clamp 1, and a pair of bosses 14 are fixed on the front surface of the side clamp 1 near the end sleeve 13. The gear 15 is clamped between the two bosses 14, and a sleeve shaft 151 is keyed to the middle of the gear 15. The sleeve shaft 151 passes through the bosses 14 and is rotatably connected to the bosses 14, so that when the sleeve shaft 151 rotates, it can drive the gear 15 to rotate together between the two bosses 14.

[0041] Furthermore, the gear 15 can be driven to rotate by the insulating rod 4. The middle of the sleeve shaft 151 is provided with a through hexagonal hole 152. The bottom end of the insulating rod 4 is provided with a hexagonal post 41, which can be inserted into the hexagonal hole 152. When the insulating rod 4 is rotated, the insulating rod 4 drives the sleeve shaft 151 to rotate together through the hexagonal post 41. After the side clamp 1 is clamped at the root of the bowl head 2, the operator can hold the insulating rod 4 and insert the hexagonal post 41 into the hexagonal hole 152, so that the operator can drive the sleeve shaft 151 to rotate together by rotating the insulating rod 4, thereby causing the gear 15 to rotate.

[0042] In addition, a pin 18 is slidably connected to the front surface of the side clamp 1. A sliding hole 16 is provided on the surface of the side clamp 1 located to the right of the gear 15. The sliding hole 16 is connected to the second clamping cavity 12. The pin 18 is inserted into the sliding hole 16 and slidably connected to the side clamp 1. A toothed groove 181 is provided on the side surface of the pin 18. The gear 15 meshes with the toothed groove 181. When the gear 15 rotates, the gear 15 will drive the pin 18 to move along the sliding hole 16 under the action of the toothed groove 181. When the pin 18 moves outward along the sliding hole 16, the opening of the side clamp 1 will be opened. At this time, the side clamp 1 can be smoothly inserted into the root of the bowl head 2 or the side clamp can be... When the tool 1 is removed from the bowl head 2, and the gear 15 rotates and drives the pin 18 to move along the sliding hole 16 toward the inside of the second clamping cavity 12, the end of the pin 18 passes through the front end of the side clamp 1 and abuts against the inner wall of the rear end of the second clamping cavity 12. At this time, the pin 18 can close the opening of the side clamp 1, so that the side clamp 1 is locked on the bowl head 2, to prevent the side clamp 1 from falling off the bowl head 2 when the operator uses the insulating rope 3 to lift the side clamp 1. At the same time, by using the insulating rope 3 to lift the side clamp 1 to fix the bowl head 2, the phenomenon of rope slippage caused by the insulating rope 3 being directly tied to the insulator string in the traditional working method can be prevented.

[0043] It is worth noting that a protruding plate 182 is provided on the outer surface of the pin 18, and a guide rod 17 is fixed on the outer side of the side clamp 1. The guide rod 17 passes through the protruding plate 182, and a spring 172 is sleeved on the outer side of the guide rod 17. The guide rod 17 is located on the right side of the pin 18, and the end of the guide rod 17 is fixed on the side clamp 1. A baffle 171 is fixed on the head end of the guide rod 17, and the head end of the spring 172 abuts against the baffle 171. The spring 172 is in a compressed state on the outer side of the guide rod 17. A sleeve hole 183 is opened on the protruding plate 182, and the guide rod 17 passes through the sleeve hole 183. The end of the spring 172 abuts against the protruding plate 182. Under the elastic force of the spring 172, the protruding plate 182 drives the pin 18 to always abut against the inner wall of the rear end of the second clamping cavity 12, so that the side clamp 1 remains in a normally closed state when there is no external force.

[0044] It is worth noting that the end of the pin 18 is fixed with a stop plate 184. The outer diameter of the stop plate 184 is larger than the outer diameter of the pin 18. When the gear 15 drives the pin 18 to move outward along the sliding hole 16, the stop plate 184 will eventually abut against the front inner wall of the second clamping cavity 12, thereby preventing the pin 18 from coming out of the sliding hole 16.

[0045] In the above scheme, the specific steps for replacing the jumper insulator string using side clamp 1 are as follows:

[0046] The first step is to clearly identify the on-site safety supervisor, the first electrician, the second electrician, and the ground support personnel; clarify the work procedures and methods; and clarify the safety distances and precautions.

[0047] The second step involves the first and second electricians climbing the tower in succession, selecting a suitable work position, with the first electrician positioned above the conductor crossarm and the second electrician positioned on the tower at a horizontal level with the conductor clamp. Work can only begin after obtaining permission from the safety supervisor. The third step involves the first electrician installing an insulated transfer rope with an insulated pulley at a position perpendicular to the second electrician on the crossarm, adjusting the rope length to the ground, and then fixing it in place.

[0048] The fourth step involves ground personnel using an insulated transfer rope to pass the insulated operating rod with a pin remover and the insulated rod 4 with the hexagonal post 41 to the second electrician.

[0049] Fifth step: After the second electrician obtains the insulated operating rod with the pin remover, the first electrician moves the insulated rope with the insulated pulley to a suitable position above the jumper insulator string.

[0050] Step 6: Ground personnel use insulating ropes to pass side clamp 1 and insulating rope 3 to the first electrician on the tower. The first electrician on the tower inserts the front end of side clamp 1 into the cup head 2 between the jumper insulator string and the conductor clamp. The second electrician on the tower inserts the hexagonal post 41 on the insulating rod 4 into the hexagonal hole 152 and rotates the insulating rod 4, so that the insulating rod 4 drives the pin 18 to move outward through the gear 15. At this time, the opening of side clamp 1 is open, which can cooperate with the first electrician to fully insert side clamp 1 into the root of cup head 2. After side clamp 1 is installed, the first electrician takes out the insulating rod 4, so that the pin 18 returns to its original position under the action of spring 172, so that side clamp 1 is locked on cup head 2.

[0051] Step 7: The second electrician on the tower uses the insulated operating rod to remove the locking pin at the connection between the conductor-side insulator and the cup head 2. The second electrician passes the insulated rope 3 through the end sleeve 13 and then passes the other end of the insulated rope 3 to the first electrician on the tower. The first electrician tightens the insulated rope, which lifts the side clamp 1 upward. At this time, the insulator string becomes loose due to the loss of the pull of the cup head 2. The second electrician uses the insulated operating rod to separate the cup head 2 from the insulator. At this time, the first electrician loosens the insulated rope 3 to completely separate the cup head 2 from the insulator.

[0052] Step 8: After the first electrician secures the insulator string with insulating rope 3, he removes the locking pin at the connection between the insulator and the ball head on the crossarm side of the tower, and with the cooperation of the ground personnel, replaces the entire string of insulators.

[0053] Step 9: After replacing the insulator string, follow the reverse order described above. First, restore the connection between the insulator and the tower, then restore the jumper wire and insulator suspension connection and install the spring pin. Remove the insulating tools, and the workers on the tower can safely descend the tower.

[0054] The foregoing description of specific exemplary embodiments of the invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims

1. A clamp for replacing jumper insulator strings on the conductor side during live-line replacement, characterized in that: Includes a side clamp (1), which is clamped at the base of the bowl head (2). The side clamp (1) is bent into a U-shape from the middle. End sleeves (13) are provided at both ends of the side clamp (1) and at the bend of the side clamp (1). An insulating rope (3) is threaded through the end sleeve (13). A gear (15) is rotatably connected to the front surface of the side clamp (1). The gear (15) can be driven to rotate by the insulating rod (4). (1) A pin (18) is slidably connected to the front side surface. A toothed groove (181) is provided on the side surface of the pin (18). The gear (15) meshes with the toothed groove (181). A protruding plate (182) is provided on the outer surface of the pin (18). A guide rod (17) is fixed on the outer side of the side clamp (1). The guide rod (17) passes through the protruding plate (182). A spring (172) is sleeved on the outer side of the guide rod (17). The side clamp (1) has a first clamping cavity (11) and a second clamping cavity (12) formed sequentially from the inside to the outside from the bend. The width of the second clamping cavity (12) is greater than the width of the first clamping cavity (11), and the width of the second clamping cavity (12) is less than the head width of the bowl (2). When the bowl (2) is a single bowl, the root of the single bowl can be inserted into the first clamping cavity (11). When the bowl (2) is a double bowl, the root of the double bowl can be inserted into the second clamping cavity (12). A pair of protrusions (14) are fixed on the front surface of the side clamp (1) near the end sleeve (13). The gear (15) is sandwiched between the two protrusions (14). A sleeve shaft (151) is keyed to the middle of the gear (15). The sleeve shaft (151) passes through the protrusions (14) and is rotatably connected to the protrusions (14). A sliding hole (16) is provided on the surface of the side clamp (1) located on the right side of the gear (15). The sliding hole (16) is connected to the second clamping cavity (12). The pin (18) is inserted into the sliding hole (16) and slidably connected to the side clamp (1).

2. The live-line replacement jumper insulator string conductor-side clamp as described in claim 1, characterized in that: The guide rod (17) is located on the right side of the pin (18). The end of the guide rod (17) is fixed on the side clamp (1). The head end of the guide rod (17) is fixed with a baffle (171). The head end of the spring (172) abuts against the baffle (171). The spring (172) is in a compressed state on the outside of the guide rod (17).

3. The live-line replacement jumper insulator string conductor-side clamp as described in claim 1, characterized in that: The end of the pin (18) passes through the front end of the side clamp (1) and abuts against the inner wall of the rear end of the second clamping cavity (12). The end of the pin (18) is fixed with a stop plate (184), and the outer diameter of the stop plate (184) is larger than the outer diameter of the pin (18).

4. The live-line replacement jumper insulator string conductor-side clamp as described in claim 1, characterized in that: The protruding plate (182) has a sleeve hole (183), the guide rod (17) passes through the sleeve hole (183), and the end of the spring (172) abuts against the protruding plate (182).

5. The live-line replacement jumper insulator string conductor-side clamp as described in claim 1, characterized in that: The sleeve shaft (151) has a through hexagonal hole (152) in the middle, and the bottom end of the insulating rod (4) has a hexagonal post (41). The hexagonal post (41) can be inserted into the hexagonal hole (152). When the insulating rod (4) is rotated, the insulating rod (4) drives the sleeve shaft (151) to rotate together through the hexagonal post (41).

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