Anti-slip wire protection device for laying ground wire on overhead transmission line

Abstract

The utility model discloses an anti-slip wire protection device for laying a ground wire on an overhead transmission line. The ground wire clamping device comprises a mounting frame, a wire pulley block rotationally connected to the interior of the mounting frame, a transverse arm assembly mounted on the mounting frame, a longitudinal arm assembly mounted on the transverse arm assembly, and a clamping mechanism arranged on the mounting frame and used for clamping a ground wire when the ground wire slips, and the clamping mechanism comprises a base rotationally connected to the longitudinal arm assembly. The base is provided with a through rope passing channel, the clamping mechanism further comprises a moving block and a pressing block, the moving block is installed on the peripheral face of the base, the pressing block is installed on the longitudinal arm assembly, the moving block is arranged on the path where the moving block swings along with the base, and a ground wire penetrates through the rope passing channel. Unnecessary personal injury accidents caused by emergencies such as breakage of the ground wire can be effectively prevented, and the ground wire laying construction of the power transmission line can be better protected.

Description

Technical Field

[0001] The utility model relates to an anti-walking line protection device for stringing conductors and ground wires of overhead transmission lines. Background Art

[0002] At present, during the process of stringing conductors and ground wires in power construction, basically, a winch or a tensioner is used for stringing. When crossing important occasions such as high-grade highways, railways, and first- and second-class highways, through the rich experience of special types of work such as winch workers and tensioning manipulators, and the supervision of the crossing point by safety supervisors, the wiring and stringing are carried out without a specific and reliable anti-walking line protection device. When sudden situations such as the breakage of conductors and ground wires and connecting fittings occur, human experience and technical operation levels cannot meet the safety needs of the construction site. Summary of the Invention

[0003] The purpose of the utility model is to provide an anti-walking line protection device for stringing conductors and ground wires of overhead transmission lines, which can effectively avoid the dangers caused by factors such as sudden breakage and walking of conductors and ground wires, and improve the safety factor during the construction process.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: an anti-walking line protection device for stringing conductors and ground wires of overhead transmission lines, which includes an installation frame, a wire pulley group rotatably connected within the installation frame, a cross-arm assembly installed on the installation frame, a longitudinal arm assembly installed on the cross-arm assembly, and a clamping mechanism provided on the installation frame and used for clamping the conductor and ground wire when it walks. The clamping mechanism includes a base rotatably connected to the longitudinal arm assembly, a through wire passage is opened on the base, the clamping mechanism further includes a moving block installed on the outer peripheral surface of the base, and a pressing block installed on the longitudinal arm assembly and on the path where the moving block swings with the base. The conductor and ground wire pass through the wire passage. When the conductor and ground wire break, the proximal end of the base swings upward, the distal end of the base swings downward, the moving block swings upward with the proximal end of the base and is squeezed by the pressing block and then moves towards the inside of the wire passage, and the moving block presses and fixes the broken conductor and ground wire. The proximal end is the end close to the wire pulley group, and the distal end is the end far from the wire pulley group.

[0005] In another embodiment, the base includes an upper base rotatably connected to the longitudinal arm assembly and a lower base rotatably connected to the upper base and lockable on the upper base, and the moving block is movably installed on the upper base in a direction towards or away from the wire passage.

[0006] In another embodiment, the rotation axis of the base is parallel to the rotation axis of the wire pulley group.

[0007] In another embodiment, one side of the upper base and the lower base is hinged, and the other side can be unfolded or closed and locked by a buckle.

[0008] In another embodiment, compression wheel assemblies for pressing the ground wire against the base are respectively provided on the proximal end and / or the distal end of the base.

[0009] In another embodiment, the compression wheel assembly includes a wing bolt threadedly connected to the base, a compression wheel bracket sleeved on the wing bolt, a compression roller rotatably connected to the compression wheel bracket, and a compression spring sleeved on the wing bolt and compressed between the wing bolt and the compression wheel bracket. By adjusting the screwing depth of the wing bolt, the pressing force of the compression roller on the ground wire can be adjusted.

[0010] In another embodiment, an extension bracket is provided on the longitudinal arm assembly, and the pressing block is rotatably mounted on the extension bracket, and the rotation axis of the pressing block is parallel to the rotation axis of the wire pulley group.

[0011] In another embodiment, the extension bracket includes a support plate fixed to the longitudinal arm assembly, a guide sleeve fixed to the support plate, a rotating seat telescopically disposed in the guide sleeve through an elastic member, and an adjusting screw threadedly connected to the guide sleeve and capable of pushing the rotating seat to move. The pressing block is rotatably connected to the rotating seat. The extension bracket can adjust the initial distance between the pressing block and the moving block, thereby adjusting the sensitivity of the moving block to press and fix the broken ground wire.

[0012] In another embodiment, the cross-arm assembly includes a first cross bar and a second cross bar telescopically connected to the first cross bar.

[0013] In another embodiment, the longitudinal arm assembly includes an outer sleeve tube and a longitudinal rod sleeved on the outer sleeve tube. The longitudinal rod is fixed to the outer sleeve tube by the friction force therebetween. When the height of the longitudinal rod needs to be adjusted, the friction force therebetween can be overcome.

[0014] Due to the application of the above technical solutions, the present utility model has the following advantages compared with the prior art: This device adopts the lever principle and uses a reliable mechanical locking action to effectively prevent the occurrence of unnecessary personal injury accidents caused by sudden situations such as the breakage of the ground wire, and better protects the construction of the transmission line ground wire laying. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Att Figure 1 is a perspective view of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The present utility model will be further described below with reference to the embodiments shown in the drawings.

[0017] Refer to Att Figure 1As shown in the figure, the anti-walking protection device for guiding and grounding wires in overhead transmission lines includes an installation frame 0, a wire pulley group 4 rotatably connected within the installation frame 0, a cross-arm assembly 2 installed on the installation frame 0, a longitudinal-arm assembly 3 installed on the cross-arm assembly 2, and a clamping mechanism 1 provided on the installation frame 0 and used for clamping the guiding and grounding wires when they slip.

[0018] The clamping mechanism 1 includes a base 11 rotatably connected to the longitudinal-arm assembly 3. A through wire passage A is provided on the base 11. The clamping mechanism 1 further includes a moving block 13 installed on the outer peripheral surface of the base, and a pressing block 14 installed on the longitudinal-arm assembly 3 and located on the path where the moving block swings along with the base. The guiding and grounding wires pass through the wire passage A. When the guiding and grounding wires break, the proximal end of the base swings upward and the distal end of the base swings downward. The moving block swings upward along with the proximal end of the base and is pressed by the pressing block and then moves toward the inside of the wire passage A, and the moving block presses and fixes the broken guiding and grounding wires. The proximal end is the end close to the wire pulley group 4, and the distal end is the end far from the wire pulley group 4.

[0019] The base 11 includes an upper base 111 rotatably connected to the longitudinal-arm assembly 3 and a lower base 112 rotatably connected to the upper base 111 and lockable on the upper base 111. The moving block is movably installed on the upper base 111 in a direction toward or away from the wire passage A. The rotation axis of the base 11 is parallel to the rotation axis of the wire pulley group 4. One side of the upper base 111 and the lower base 112 is hinged, and the other side can be unfolded or closed and locked through a buckle 113. Pressing wheel assemblies 12 for pressing the guiding and grounding wires on the base are respectively provided at the proximal end and / or the distal end of the base 11. The pressing wheel assembly includes a butterfly bolt 121 threadedly connected to the base, a pressing wheel bracket 122 sleeved on the butterfly bolt, a pressing roller 123 rotatably connected to the pressing wheel bracket, and a compression spring 124 sleeved on the butterfly bolt 121 and compressed between the butterfly bolt 121 and the pressing wheel bracket 122. Adjusting the screwing depth of the butterfly bolt can adjust the pressing force of the pressing roller on the guiding and grounding wires.

[0020] An extension bracket 33 is provided on the longitudinal-arm assembly 3. The pressing block is rotatably installed on the extension bracket 33. The rotation axis of the pressing block 14 is parallel to the rotation axis of the wire pulley group 4. The extension bracket 33 includes a support plate 331 fixed to the longitudinal-arm assembly 3, a guide sleeve 332 fixed to the support plate, a rotating seat 333 telescopically provided in the guide sleeve through an elastic member, and an adjusting screw 334 threadedly connected to the guide sleeve and capable of pushing the rotating seat to move. The pressing block 14 is rotatably connected to the rotating seat 333. The extension bracket 33 can adjust the initial distance between the pressing block 14 and the moving block 13, thereby adjusting the sensitivity of the moving block 13 to press and fix the broken guiding and grounding wires.

[0021] The cross-arm assembly 2 includes a first cross-bar 21 and a second cross-bar 22 that is telescopically connected to the first cross-bar. The longitudinal-arm assembly 3 includes an outer sleeve 31 and a longitudinal rod 32 that is sleeved on the outer sleeve. The longitudinal rod is fixed to the outer sleeve by the friction between the two. When the height of the longitudinal rod needs to be adjusted, the friction between the two needs to be overcome.

[0022] This device mainly utilizes the lever principle. During the construction of guiding and ground wire laying across important occasions, in case the guiding and ground wires break before and after the crossing object, the guiding and ground wires above the important crossing object will slide towards the important crossing object due to the action of gravity. The distal end of the guiding and ground wire protection locking device will be subjected to a downward pressure, and the proximal end will be subjected to an upward pressure, causing the locking device to act and lock the guiding and ground wires. The cross-arm assembly can be telescopically adjusted in the horizontal direction, and the horizontal distance can be adjusted according to factors such as the specifications of the guiding and ground wires and the magnitude of the wire laying tension. The longitudinal-arm assembly meets the requirements of up-and-down telescoping, and the longitudinal distance can be adjusted according to factors such as the specifications of the guiding and ground wires and the magnitude of the wire laying tension.

[0023] The above embodiments are only used to illustrate the technical concept and features of the present invention, and their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and shall not be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A ground wire anti-slip protection device for overhead power transmission lines, comprising a mounting frame, a wire pulley assembly rotatably connected to the mounting frame, a cross arm assembly mounted on the mounting frame, a longitudinal arm assembly mounted on the cross arm assembly, and a clamping mechanism provided on the mounting frame and used to clamp the ground wire when the ground wire slips, characterized in that: The clamping mechanism includes a base rotatably connected to the longitudinal arm assembly, and a through rope passage is provided on the base. The clamping mechanism also includes a moving block installed on the outer peripheral surface of the base, and a clamping block installed on the longitudinal arm assembly and on a path where the moving block swings with the base. The ground wire passes through the rope passage. When the ground wire breaks, the proximal end of the base swings up and the distal end of the base swings down. The moving block swings up with the proximal end of the base and is squeezed by the clamping block and then moves toward the rope passage. The moving block clamps and fixes the broken ground wire.

2. The overhead power transmission line ground wire anti-slip protection device according to claim 1, characterized in that: The base includes an upper base rotatably connected to the longitudinal arm assembly and a lower base rotatably connected to the upper base and lockable on the upper base. The moving block can be movably installed on the upper base in a direction toward or away from the rope channel.

3. The overhead power transmission line ground wire anti-slip protection device according to claim 1, characterized in that: The rotation axis of the base is parallel to the rotation axis of the wire pulley block.

4. The overhead power transmission line ground wire anti-slip protection device according to claim 2, characterized in that: The upper base and the lower base are hinged on one side, and can be unfolded or closed and locked by a buckle on the other side.

5. The overhead power transmission line ground wire anti-slip protection device according to claim 1, characterized in that: A pressing wheel assembly for pressing the ground wire onto the base is respectively provided on the proximal end and / or the distal end of the base.

6. The overhead power transmission line ground wire anti-slip protection device according to claim 5, characterized in that: The pressure wheel assembly includes a butterfly bolt threadedly connected to the base, a pressure wheel bracket sleeved on the butterfly bolt, a pressure roller rotatably connected to the pressure wheel bracket, and a compression spring sleeved on the butterfly bolt and compressed between the butterfly bolt and the pressure wheel bracket.

7. The overhead power transmission line ground wire anti-slip protection device according to claim 1, characterized in that: An extension bracket is provided on the longitudinal arm assembly, and the pressing block is rotatably installed on the extension bracket. The rotation axis of the pressing block is parallel to the rotation axis of the wire pulley block.

8. The overhead power transmission line ground wire anti-slip protection device according to claim 7, characterized in that: The extension bracket includes a support plate fixed on the longitudinal arm assembly, a guide sleeve fixed on the support plate, a rotating seat arranged in the guide sleeve and retractable through an elastic member, an adjusting screw threadedly connected in the guide sleeve and capable of pushing the rotating seat to move, and the clamping block is rotatably connected to the rotating seat.

9. The overhead power transmission line ground wire anti-slip protection device according to claim 1, characterized in that: The cross arm assembly includes a first cross bar and a second cross bar telescopically connected to the first cross bar.

10. The overhead power transmission line ground wire anti-slip protection device according to claim 1, characterized in that: The longitudinal arm assembly comprises an outer sleeve and a longitudinal rod sleeved with the outer sleeve.

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