A straight-through screw broadsword clamp

Abstract

The invention discloses a straight-through screw broadsword clamp, comprising a front clamp and a rear clamp, the front clamp and the rear clamp are connected below by a screw assembly and an insulating rod, one end of the screw assembly is sleeved with an adjustment tool, the other end of the screw assembly is rotatably mounted with a connecting buckle, one end of the insulating rod is provided with a connecting plate, the connecting plate and the connecting buckle are detachably connected by bolts or pins, a plurality of equidistantly arranged assembly shaft holes are provided on the insulating rod, a clamping shaft for fixing and connecting the rear clamp is inserted in the assembly shaft hole, and a locking mechanism for locking the clamping shaft is installed above the insulating rod. The invention is suitable for power transmission line maintenance, a locking mechanism is installed above the insulating rod in the device, and the locking mechanism can lock the clamping shaft at the connection position of the insulating rod and the rear clamp after the device is installed as a whole, so as to ensure that the clamping shaft will not accidentally fall off during installation, thereby ensuring the safety of the entire operation process.

Description

Technical Field

[0001] The invention relates to the technical field of power transmission line maintenance, and in particular to a straight-through lead screw broadsword clamp. Background Art

[0002] The knife clamp is a common tool for replacing any string of tension double insulators during power transmission line maintenance. It has the characteristics of good adaptability, convenient operation and high efficiency. It is widely used in live line operation and power outage maintenance. Commonly used knife clamps include front clamps, rear clamps, screw rod assemblies and insulation pull plates;

[0003] In the existing broadsword clamps, the rear clamp and the insulating pull plate are mostly connected by a fixed pin structure. Therefore, the rear clamp and the insulating pull plate cannot be disassembled after assembly. Therefore, when the structure is damaged, it is inconvenient to replace it. If the connection structure is replaced with a detachable structure, there is a safety hazard of abnormal detachment of the connection structure. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects in the prior art and provide a straight-through lead screw large knife clamp.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] The invention discloses a straight-through screw broadsword clamp, comprising a front clamp and a rear clamp, wherein the front clamp and the rear clamp are connected below by a screw assembly and an insulating rod, an adjustment tool is sleeved on one end of the screw assembly, a connecting buckle is rotatably installed on the other end of the screw assembly, a connecting plate is arranged at one end of the insulating rod, the connecting plate and the connecting buckle are detachably connected by bolts or pins, a plurality of assembly shaft holes are equidistantly opened on the insulating rod, a clamping shaft for fixing and connecting the rear clamp is inserted in the assembly shaft hole, and a A locking mechanism for locking the card shaft, wherein the upper surface of the insulating rod is provided with an assembly groove along the length direction, and the locking mechanism comprises a plurality of movable card strips slidably mounted in the assembly groove, wherein the movable card strips are respectively located above the assembly shaft hole, and the bottom of the movable card strip is provided with a card slot corresponding to the assembly shaft hole, and the card slot can overlap with the assembly shaft hole, and the middle part of the card shaft has an annular groove for cooperating with the positioning of the movable card strip. When working, the bayonet of the front clamp is inserted into the shoulder of the equipotential side connecting plate, and the hook is hooked on the side The U-shaped ring on the connecting plate; at the same time, insert the bayonet of the rear clamp into the shoulder of the ground potential side connecting plate, and fix the end of the rear clamp to the side connecting plate, turn the screw assembly by adjusting tools (such as wrenches, etc.), tighten the bottom of the front clamp and the rear clamp, and transfer the load on the insulator string on the installation side of the device to the insulating pull plate and the screw of the clamp. The insulator string can be in a relaxed and stress-free state. The maintenance personnel replace the insulator string, remove the device after the replacement is completed, and the replacement work is completed. A locking mechanism is installed above the insulating rod in the device, and the locking mechanism can be installed After the overall installation, the card shaft at the connection position of the insulating rod and the rear clamp is locked, which can ensure that the card shaft will not fall off accidentally during installation, thereby ensuring the safety of the entire operation process. Such a structural setting allows the movable card strip to be pushed to move during the installation of the card shaft so that the card slot coincides with the assembly shaft hole. At this time, the card shaft can be inserted into the assembly shaft hole. After being inserted into place (the groove in the middle of the card shaft coincides with the assembly groove), the movable card strip is pushed again to misalign the card slot with the assembly shaft hole. At this time, the movable card strip clamps the card shaft, thereby achieving the locking of the card shaft.

[0007] Preferably, the plurality of movable clips are connected as a whole via a T-shaped limit piece, the assembly slot is provided with a limit slot along the length direction, and the end of the T-shaped limit piece is slidably engaged in the limit slot. Such a structural arrangement prevents the movable clip from moving vertically during the movement and ensures that it will not fall off from the assembly slot.

[0008] Preferably, after the multiple movable card strips are connected as one, an elastic component is installed at one end thereof and a push plate is installed at the other end. The elastic component is a spring or a spring sheet, and the movable card strip can be pushed to move under the elastic action of the elastic component, so that after the card shaft is installed, the card groove on the movable card strip can be misaligned with the assembly shaft hole to ensure that the card shaft is always in a locked state, and the push plate is used to assist in pushing the movable card strip to move.

[0009] Preferably, a kit is sleeved and fixed to one end of the screw assembly away from the connecting buckle, and the front end of the kit adopts a regular hexagonal prism structure, which is used to rotate the screw assembly by sleeved an adjusting tool (such as a wrench or other tool) on the kit.

[0010] Preferably, a cavity is provided inside one end of the screw rod assembly, and a protruding rod is provided at one end of the connecting buckle. The protruding rod is rotatably installed in the cavity. This ensures the mobility between the screw rod assembly and the insulating rod, thereby facilitating the screw rod assembly to pull the insulating rod to move.

[0011] Preferably, the inner diameter of the cavity is R1, and the diameter of the portion of the connecting buckle inserted into the cavity is R2, then R1>R2.

[0012] Preferably, a lining is nested inside the cavity, and the lining covers the inner wall of the cavity to ensure the strength of the end of the screw assembly.

[0013] Preferably, an auxiliary rotating ball is embedded inside the side of the lining member that contacts the convex rod, and an annular groove is provided on the surface of the convex rod and the side surface that matches the auxiliary rotating ball. The auxiliary rotating ball is rotatably connected to the annular groove, thereby improving the rotational connection performance between the screw assembly and the insulating rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] A locking mechanism is installed above the insulating rod in the device. After the device is installed as a whole, the locking mechanism can lock the clamping shaft at the connection position between the insulating rod and the rear clamp, so that the clamping shaft will not accidentally fall off during installation, ensuring the safety of the entire operation process. In addition, such a structural setting makes it easy to disassemble the insulating rod and the rear clamp, and it is convenient to replace the damaged structure when it is damaged.

[0016] In the device, during the installation of the card shaft, the movable card strip can be pushed to move so that the card slot coincides with the assembly shaft hole. At this time, the card shaft can be inserted into the assembly shaft hole. After being inserted into place (the groove in the middle of the card shaft coincides with the assembly groove), the movable card strip is pushed again to misalign the card slot with the assembly shaft hole. At this time, the movable card strip clamps the card shaft, thereby realizing the locking of the card shaft. The operation is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of the screw rod assembly in the present invention;

[0019] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure of the middle A area;

[0020] Figure 4 It is a schematic diagram of the insulating rod structure in the present invention;

[0021] Figure 5 This is a schematic diagram of the disassembled structure of the insulating rod in the present invention.

[0022] Figure numerals: 1. front clamp; 2. rear clamp; 3. screw assembly; 4. insulating rod; 5. adjustment tool; 6. kit; 7. connecting buckle; 8. auxiliary rotating ball; 9. lining; 10. protruding rod; 11. connecting plate; 12. assembly groove; 13. movable clamping strip; 14. limiting groove; 15. clamping shaft; 16. elastic component; 17. T-shaped limiting member; 18. push plate; 19. assembly shaft hole. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1 -Attached Figure 5 , further illustrating a specific implementation of a straight-through screw blade clamp of the present invention. A straight-through screw blade clamp of the present invention is not limited to the description of the following embodiments.

[0024] Embodiment 1:

[0025] This embodiment provides a straight-through screw blade clamp, such as Figure 1-5 As shown, the front fixture 1 and the rear fixture 2 are connected below by a screw assembly 3 and an insulating rod 4. An adjustment tool 5 is sleeved on one end of the screw assembly 3, and a connecting buckle 7 is rotatably installed on the other end of the screw assembly 3. A connecting plate 11 is provided at one end of the insulating rod 4. The connecting plate 11 is detachably connected to the connecting buckle 7 by bolts or pins. A plurality of assembly shaft holes 19 are equidistantly opened on the insulating rod 4. A clamping shaft 15 for fixing and connecting the rear fixture 2 is inserted into the assembly shaft hole 19. A locking mechanism for locking the card shaft 15 is installed above the insulating rod 4. An assembly groove 12 is opened on the upper surface of the insulating rod 4 along the length direction. The locking mechanism includes a plurality of active clamping strips 13 slidably installed in the assembly groove 12. The active clamping strips 13 are respectively located above the assembly shaft holes 19, and a clamping groove corresponding to the assembly shaft hole 19 is opened at the bottom of the active clamping strip 13. The clamping groove can overlap with the assembly shaft hole 19. The middle part of the card shaft 15 has an annular groove for cooperating with the positioning of the active clamping strip 13.

[0026] By adopting the above technical solution:

[0027] During operation, insert the bayonet of the front fixture 1 into the shoulder of the equipotential side connecting plate, and hook the bent hook on the U-shaped ring on the side connecting plate; at the same time, insert the bayonet of the rear fixture 2 into the shoulder of the ground potential side connecting plate, and fix the end of the rear fixture 2 to the side connecting plate, and turn the screw assembly 3 by adjusting the tool 5 (such as a wrench or other tools), tighten the bottom of the front fixture 1 and the rear fixture 2, and transfer the load on the insulator string on the installation side of the device to the fixture insulating pull plate and the screw, so that the insulator string can be in a relaxed and stress-free state, and the maintenance personnel replace the insulators of the string. After the replacement is completed, the device is dismantled, and the replacement work is completed. A locking machine is installed above the insulating rod 4 in the device. The locking mechanism can lock the card shaft 15 at the connection position between the insulating rod 4 and the rear clamp 2 after the overall installation of the device, so as to ensure that the card shaft 15 will not accidentally fall off during installation, thereby ensuring the safety of the entire operation process. During the installation of the card shaft 15, the movable card strip 13 can be pushed to move so that the card groove coincides with the assembly shaft hole 19. At this time, the card shaft 15 can be inserted into the assembly shaft hole 19. After being inserted into place (the groove in the middle of the card shaft 15 coincides with the assembly groove 12), the movable card strip 13 is pushed again to misalign the card groove with the assembly shaft hole 19. At this time, the movable card strip 13 clamps the card shaft 15, thereby achieving the locking of the card shaft 15.

[0028] Example 2

[0029] On the basis of Example 1, in this embodiment, a plurality of movable clips 13 are connected as a whole via a T-shaped limit piece 17, a limit slot 14 is provided along the length direction of the assembly slot 12, and the end of the T-shaped limit piece 17 is slidably engaged in the limit slot 14. Such a structural setting prevents the movable clip 13 from moving vertically during the movement, and ensures that it will not fall off from the assembly slot 12.

[0030] After multiple active card strips 13 are connected as one, an elastic component 16 is installed at one end thereof and a push plate 18 is installed at the other end. The elastic component 16 adopts a spring or a spring sheet. Under the elastic action of the elastic component 16, the active card strip 13 can be pushed to move, so that after the card shaft 15 is installed, the card groove on the active card strip 13 can be misaligned with the assembly shaft hole 19 to ensure that the card shaft 15 is always in a locked state. The push plate 18 is used to assist in pushing the active card strip 13 to move.

[0031] Example 3

[0032] On the basis of Example 1, in this embodiment, one end of the screw assembly 3 away from the connecting buckle 7 is sleeved and fixed with a set 6, and the front end of the set 6 adopts a regular hexagonal prism structure, which is used to rotate the screw assembly 3 by sleeve-fitting an adjustment tool 5 (such as a wrench or other tool) on the set 6. A cavity is provided inside one end of the screw assembly 3, and a convex rod 10 is provided at one end of the connecting buckle 7. The convex rod 10 is rotatably installed in the cavity, so that the mobility between the screw assembly 3 and the insulating rod 4 can be ensured, thereby facilitating the screw assembly 3 to pull the insulating rod 4 to move. Furthermore, the inner diameter of the cavity is R1, and the diameter of the part of the connecting buckle 7 inserted into the cavity is R2, then R1>R2, and a lining member 9 is nested inside the cavity, and the lining member 9 covers the inner wall of the cavity to ensure the strength of the end of the screw assembly 3. Furthermore, an auxiliary rotating ball 8 is nested inside the side of the lining member 9 that contacts the protruding rod 10, and an annular groove is provided on the surface of the protruding rod 10 and the side surface that is adapted to the auxiliary rotating ball 8. The auxiliary rotating ball 8 is rotatably connected to the annular groove, thereby improving the rotational connection performance between the screw assembly 3 and the insulating rod 4.

[0033] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A straight-through screw-type broadsword clamp, comprising a front clamp (1) and a rear clamp (2), wherein the front clamp (1) and the rear clamp (2) are connected below by a screw assembly (3) and an insulating rod (4), and an adjustment tool (5) is sleeved on one end of the screw assembly (3), characterized in that: A connecting buckle (7) is rotatably mounted on the other end of the screw rod assembly (3); a connecting plate (11) is provided on one end of the insulating rod (4); the connecting plate (11) is detachably connected to the connecting buckle (7) via a bolt or a pin; The insulating rod (4) is provided with a plurality of equidistant assembly shaft holes (19), a clamping shaft (15) for fixing the rear clamp (2) is inserted into the assembling shaft hole (19), and a locking mechanism for locking the clamping shaft (15) is installed above the insulating rod (4); The upper surface of the insulating rod (4) is provided with an assembly groove (12) along the length direction, and the locking mechanism includes a plurality of movable clamping strips (13) slidably installed in the assembly groove (12), the movable clamping strips (13) are respectively located above the assembly shaft hole (19), and the bottom of the movable clamping strip (13) is provided with a clamping groove corresponding to the assembly shaft hole (19), and the clamping groove can overlap with the assembly shaft hole (19), and the middle part of the clamping shaft (15) is provided with an annular groove for cooperating with the positioning of the movable clamping strip (13).

2. A straight-through screw large knife clamp according to claim 1, characterized in that: The plurality of movable clamping strips (13) are connected as a whole via a T-shaped limiting piece (17); the assembly groove (12) is provided with a limiting groove (14) along the length direction; and the end of the T-shaped limiting piece (17) is slidably engaged in the limiting groove (14).

3. A straight-through screw large knife clamp according to claim 2, characterized in that: After the plurality of movable clamping strips (13) are connected as one body, an elastic component (16) is installed at one end thereof, and a push plate (18) is installed at the other end thereof.

4. A straight-through screw large knife clamp according to claim 1, characterized in that: A sleeve (6) is sleeved and fixedly connected to one end of the screw rod assembly (3) away from the connecting buckle (7), and the front end of the sleeve (6) adopts a regular hexagonal prism structure.

5. A straight-through screw large knife clamp according to claim 4, characterized in that: A cavity is provided inside one end of the screw rod assembly (3), and a convex rod (10) is provided at one end of the connecting buckle (7), and the convex rod (10) is rotatably mounted in the cavity.

6. A straight-through screw large knife clamp according to claim 5, characterized in that: The inner diameter of the cavity is R1, and the diameter of the portion of the connecting buckle (7) inserted into the cavity is R2, and R1>R2.

7. A straight-through screw large knife clamp according to claim 6, characterized in that: An inner lining member (9) is nested inside the cavity, and the inner lining member (9) covers the inner wall of the cavity.

8. A straight-through screw large knife clamp according to claim 7, characterized in that: An auxiliary rotating ball (8) is embedded in the side of the lining member (9) that contacts the convex rod (10), and an annular groove is provided on the side surface of the convex rod (10) that matches the auxiliary rotating ball (8), and the auxiliary rotating ball (8) is rotatably connected to the annular groove.

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