Ground wire lifting device

Abstract

The utility model discloses a ground wire lifting device, which relates to the technical field of electric power maintenance equipment, and comprises a cross beam, a lifting chain and a shell movably clamped on the cross beam, a hydraulic cylinder is arranged in the shell, the extension end of the hydraulic cylinder movably penetrates through the top of the shell and is fixedly connected with one end of a cargo boom, and a fixing device is arranged in the shell. The fixing device is used for clamping the cross beam to limit separation of the cross beam and the shell and comprises a screw in threaded connection with the shell, the bottom end of the screw is rotationally connected with a sliding plate and used for supporting lifting of the sliding plate, a support is arranged at the bottom of the sliding plate, and the bottom end of the support is rotationally connected with rolling wheels. The idler wheels are in rolling contact with the extrusion plate used for rotationally extruding the cross beam, the lifting arm is provided with a limiting device, and the limiting device is used for connecting the lifting chain and the lifting arm, so that the shell is conveniently fixed to the cross beam and is prevented from sliding on the cross beam, the length of the lifting chain is conveniently adjusted, and the using effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to power overhauls equipment technical field, concretely is a grounding wire lifting device. BACKGROUND

[0002] It is known that overhead grounding wires are all installed above wires, are hung on iron towers through wire clamps, and are run for a long time, so that the wire clamps and the hanging rings will be abraded and need to be replaced in time.

[0003] In the prior art, the utility model patent with the publication number CN208545060U provides a hydraulic overhead grounding wire lifting device, which comprises a cuboid shell, two sides in the cuboid shell are vertically provided with hydraulic cylinders, the top of the telescopic rod of the hydraulic cylinder is horizontally provided with a hoist arm, and the hoist arm is rotationally connected with the telescopic rod; the outer end of the hoist arm is suspended with a lifting chain, the bottom end of the lifting chain is provided with a mountain climbing buckle, and the mountain climbing buckle is used to cooperate with the overhead grounding wire; the bottom center of the cuboid shell is provided with a clamping groove, and the cuboid shell can be clamped on the cross beam above the overhead grounding wire through the clamping groove.

[0004] The hydraulic overhead grounding wire lifting device directly clamps the shell on the cross beam, the shell is easy to slide on the cross beam, the length of the lifting chain is not convenient to adjust, and the use effect is affected, so the grounding wire lifting device is provided to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a grounding wire lifting device to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a grounding wire lifting device, which comprises a cross beam and a lifting chain, a shell that is movably clamped on the cross beam, a hydraulic cylinder arranged in the shell, a hoist arm that is movably connected to the extension end of the hydraulic cylinder and fixedly connected to one end of the hoist arm, a fixing device arranged in the shell, the fixing device being used to clamp the cross beam to prevent the cross beam from being separated from the shell, the fixing device comprising a screw rod that is screw-connected to the shell, the screw rod being rotationally connected to a sliding plate at the bottom end and being used to support the sliding plate to lift and lower the sliding plate, a support arranged on the bottom of the sliding plate, a roller rotationally connected to the bottom end of the support, an extrusion plate that is in rolling contact with the roller and is used to rotate and extrude the cross beam, and a limiting device arranged on the hoist arm.

[0007] Preferably, the limiting device is used to connect the lifting chain and the hoist arm.

[0008] Preferably, the limiting device comprises a fixing block arranged on the top of the hoist arm, and a limiting rod that is screw-connected to the fixing block and is used to limit the separation of the lifting chain and the hoist arm.

[0009] Preferably, the sliding plate is of a cross-shaped structure, and the two ends of the sliding plate that are away from the support are slidably clamped on the inner wall of the shell.

[0010] Preferably, the support is provided with two groups of symmetrical distribution on the lifting arm, the hard rubber material roller, the roller rolls on the inclined surface of the extrusion plate.

[0011] Preferably, the top of the extrusion plate is rotatably connected to the inner wall of the shell, and the rotatable connection portion of the extrusion plate is provided with a torsional spring for pushing the extrusion plate to rotate and expand, and the extrusion plate is a right trapezoidal structure.

[0012] Preferably, the fixed block is provided with a threaded hole, one end of the limiting rod is provided with a thread matched with the threaded hole of the fixed block, and the length of the limiting rod is greater than or equal to the width of the hoist chain penetrating the lifting arm.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1. The shell is clamped on the cross beam, the screw rod is rotated, the screw rod is threadedly connected with the shell to push the sliding plate to move downward, and then the roller is pushed to move downward by the support, the side of the extrusion plate contacting the roller is inclined, the extrusion plate is pushed to rotate and extrude the side wall of the cross beam to be clamped and fixed, so that the shell is fixed on the cross beam, and sliding of the shell on the cross beam is avoided.

[0015] 2. Before the overhead ground wire is fixed, the limiting rod is removed, the hoist chain is lifted and lowered on the lifting arm, the length of the hoist chain below the lifting arm is adjusted, when the length is suitable for lifting the overhead ground wire, the hoist chain is stopped, one end of the limiting rod is threaded through the hoist chain and is threadedly connected with the fixed block, the hoist chain is limited to move on the lifting arm by the limiting rod, and the length of the hoist chain is adjusted, so that the length of the hoist chain is adjusted, and the use effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a structural schematic view of the utility model;

[0017] Fig. 2 It is a structural schematic view of the fixing device in the utility model;

[0018] Fig. 3 It is a structural schematic view of the limiting device in the utility model.

[0019] In the drawing: 1, cross beam; 2, shell; 3, hydraulic cylinder; 4, lifting arm; 5, hoist chain; 6, limiting device; 61, fixed block; 62, limiting rod; 7, fixing device; 71, screw rod; 72, sliding plate; 73, support; 74, roller; 75, extrusion plate. DETAILED DESCRIPTION

[0020] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts under the premise that no creative efforts are made, belong to the scope of protection of the present application.

[0021] Please refer to Figs. 1-3 The utility model provides a ground wire lifting device, including crossbeam 1 and chain 5, the shell 2 of moving clamping on crossbeam 1, be equipped with hydraulic cylinder 3 in the shell 2, the end of extension of hydraulic cylinder 3 moves and is fixedly connected the one end of hoist arm 4 and penetrates the top of shell 2, be equipped with fixing device 7 in the shell 2, fixing device 7 is used for clamping crossbeam 1 and separates the restriction crossbeam 2, and fixing device 7 includes the screw rod 71 of screwing connection shell 2, the sliding plate 72 of rotationally connected with the bottom of screw rod 71 is used for supporting the lifting of sliding plate 72, be equipped with support 73 on the bottom of sliding plate 72, the roller 74 of rotationally connected with the bottom end of support 73 is rolled into contact and is used for rotating the extrusion plate 75 of extruding crossbeam 1, and screw rod 71 drive motor can be arranged at the bottom of sliding plate 72, and sliding plate 72 is the cross type structure, and the two ends of sliding plate 72 away from connecting support 73 are all slidingly clamped on the inner wall of shell 2, and support 73 is equipped with two groups of symmetrical distribution on hoist arm 4, and the roller 74 is hard rubber material roller, and the roller 74 rolls on the inclined plane of extrusion plate 75, and the top of extrusion plate 75 is rotationally connected on the inner wall of shell 2, and the place of rotationally connecting extrusion plate 75 shell 2 is equipped with torsional spring for pushing extrusion plate 75 to rotate and unfold, and extrusion plate 75 is right trapezoidal structure, and the outer wall of extrusion plate 75 is antiskid material.

[0022] Clamp shell 2 on crossbeam 1, rotate screw rod 71, screw rod 71 screwing connection shell 2 push sliding plate 72 to move down, in turn through support 73 push roller 74 to move down with, by extrusion plate 75 contact roller 74 one side is inclined plane, then push extrusion plate 75 to rotate extrusion contact crossbeam 1 side wall and carry out clamping fixed, so as to be convenient for shell 2 to be fixed on crossbeam 1, avoid shell 2 to slide on crossbeam.

[0023] Hoist arm 4 is equipped with limiting device 6, limiting device 6 is used for connecting chain 5 and hoist arm 4, and limiting device 6 includes fixed block 61 arranged at the top of hoist arm 4, the fixed block 61 is screw-connected with limiting rod 62 for limiting chain 5 and hoist arm 4 separation, the fixed block 61 is equipped with threaded hole, and one end of limiting rod 62 is equipped with thread for matching the threaded hole of fixed block 61, and the length of limiting rod 62 is greater than or equal to the width of chain 5 penetrating hoist arm 4, and the bottom of chain 5 is connected with mountain climbing buckle for fixing overhead ground wire.

[0024] The overhead ground wire is fixed by the mountain climbing buckle, then the hydraulic cylinder 3 is extended to make the lifting arm 4 rise, so that the overhead ground wire is lifted by the lifting chain 5, and the lifting is stopped when the wire clamp of the overhead ground wire is not subjected to the gravity of the overhead ground wire, at this time, the wire clamp can be replaced, which is the prior art.

[0025] Before fixing the overhead ground wire, the limiting rod 62 is removed, the lifting chain 5 is pulled to rise and fall on the lifting arm 4, the length of the part of the lifting chain 5 below the lifting arm 4 is adjusted, when the length is suitable for lifting the overhead ground wire, the movement of the lifting chain 5 is stopped, one end of the limiting rod 62 is inserted through the lifting chain 5 (a ring of the lifting chain 5 close to the upper part of the lifting arm 4) and is threadedly connected with the fixing block 61, the movement of the lifting chain 5 on the lifting arm 4 is limited by the limiting rod 62, the adjustment of the length of the lifting chain 5 is completed, so that the length of the lifting chain 5 is conveniently adjusted, and the use effect is improved.

[0026] Working principle: the shell 2 is clamped on the cross beam 1, the screw rod 71 is rotated, the screw rod 71 is threadedly connected with the shell 2 and pushes the sliding plate 72 to move downwards, then the bracket 73 pushes the roller 74 to move downwards, one side of the roller 74 contacted by the extrusion plate 75 is a slope, the extrusion plate 75 is pushed to rotate and extrude and contact the side wall of the cross beam 1 to be clamped and fixed, so that the shell 2 is conveniently fixed on the cross beam 1, and the shell 2 is prevented from sliding on the cross beam, before fixing the overhead ground wire, the limiting rod 62 is removed, the lifting chain 5 is pulled to rise and fall on the lifting arm 4, the length of the part of the lifting chain 5 below the lifting arm 4 is adjusted, when the length is suitable for lifting the overhead ground wire, the movement of the lifting chain 5 is stopped, one end of the limiting rod 62 is inserted through the lifting chain 5 (a ring of the lifting chain 5 close to the upper part of the lifting arm 4) and is threadedly connected with the fixing block 61, the movement of the lifting chain 5 on the lifting arm 4 is limited by the limiting rod 62, the adjustment of the length of the lifting chain 5 is completed, so that the length of the lifting chain 5 is conveniently adjusted, and the use effect is improved.

[0027] The mountain climbing buckle, the overhead ground wire, the hydraulic cylinder 3, the cross beam 1 and the shell 2 are all prior art, and will not be repeated here.

[0028] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A ground wire lifting device, comprising a crossbeam (1) and a lifting chain (5), a shell (2) movably connected to the crossbeam (1), a hydraulic cylinder (3) arranged in the shell (2), and an end of the hydraulic cylinder (3) movably penetrating through a top of the shell (2) and fixedly connected to one end of a hoist arm (4), characterized in that: The shell (2) is provided with a fixing device (7) for clamping the cross beam (1) to limit the cross beam from separating from the shell (2), the fixing device (7) comprises a screw rod (71) screwed with the shell (2), the bottom end of the screw rod (71) is rotatably connected with a sliding plate (72) and is used for supporting the sliding plate (72) to lift and lower, the bottom of the sliding plate (72) is provided with a support (73), the bottom end of the support (73) is rotatably connected with a roller (74), the roller (74) rolls to contact an extrusion plate (75) used for rotating and extruding the cross beam (1), and the lifting arm (4) is provided with a limiting device (6).

2. The ground line lifting device of claim 1, wherein: The limiting device (6) is used for connecting the lifting chain (5) and the lifting arm (4).

3. The ground line lifting device of claim 2, wherein: The limiting device (6) comprises a fixed block (61) arranged at the top of the lifting arm (4), and a limiting rod (62) for limiting the lifting chain (5) from separating from the lifting arm (4) is screwed with the fixed block (61).

4. The ground line lifting device of claim 1, wherein: The sliding plate (72) is of a cross-shaped structure, and the two ends of the sliding plate (72) away from the connecting support (73) are slidably clamped on the inner wall of the shell (2).

5. The ground line lifting device of claim 1, wherein: The support (73) is provided with two groups of symmetrically distributed lifting arms (4), the roller (74) is a hard rubber roller, and the roller (74) rolls on the inclined surface of the extrusion plate (75).

6. The ground lift device of claim 1, wherein: The top of the extrusion plate (75) is rotatably connected to the inner wall of the shell (2), a torsional spring for pushing the extrusion plate (75) to rotate and expand is arranged at the position where the extrusion plate (75) is rotatably connected to the shell (2), and the extrusion plate (75) is of a right-angled trapezoidal structure.

7. The ground line lifting device of claim 3, wherein: The fixed block (61) is provided with a threaded hole, one end of the limiting rod (62) is provided with a thread matched with the threaded hole of the fixed block (61), and the length of the limiting rod (62) is greater than or equal to the width of the lifting chain (5) penetrating the lifting arm (4).

Images