Automatic adjusting mechanism for strain clamp to pass through tackle

Abstract

The utility model discloses an automatic adjusting mechanism for a strain clamp to pass through a pulley. The automatic adjusting mechanism comprises an automatic adjusting mechanism and a protection mechanism which are movably connected, the device has the characteristics of compact structure, small volume, light weight and good trafficability, can realize the function of directly crimping a wire and a strain clamp on the ground and then pulling the wire to pass through a tackle, and the strain clamp drainage plate safely and smoothly passes through the tackle according to a preset posture under the action of an automatic adjusting mechanism, thereby reducing the workload of working aloft of personnel and improving the working efficiency. And the operation efficiency and the safety are improved.

Description

Technical Field

[0001] The utility model belongs to the field of power lines, and specifically relates to an automatic adjustment mechanism for a strain clamp passing through a pulley. Background Art

[0002] A strain clamp is a special device designed to withstand a large amount of tension and keep the conductor stable. It is usually made of metal materials (such as aluminum alloy or steel), has a strong structure and reliable performance. The strain clamp keeps the conductor stable by clamping it and can withstand the tensile force of external forces, preventing the conductor from loosening or falling off due to stress. This device is widely used in the erection of power transmission and distribution systems to ensure the safe and reliable operation of power lines.

[0003] The installation of strain clamps mostly requires high-altitude operations, which have many problems such as large workload, low operation efficiency, high labor intensity, and high danger of high-altitude operations. If the conductor is crimped to the strain clamp on the ground and then towed through the pulley, due to reasons such as the shape, size, and material of the strain clamp, it is impossible to ensure safe and smooth passage through the pulley.

[0004] Recently, on the market, a guiding device for a strain clamp passing through a pulley has been developed by accurately calculating the length of the conductor, crimping the strain clamp on the ground, and then towing it through the pulley. However, there are problems such as the overall equipment being bulky, the passing performance and bending strength not meeting the standards, which have become technical bottlenecks restricting the realization of the ground crimping process of strain clamps. Content of the Utility Model

[0005] In view of the above defects, the utility model provides an automatic adjustment mechanism for a strain clamp passing through a pulley, which includes an automatically adjustable mechanism and a protection mechanism that are movably connected;

[0006] The automatically adjustable mechanism includes a hinged towing head, an adjustment shaft, an adjustment sleeve, and a hinge member. The front end of the adjustment shaft is movably connected to the hinged towing head. A number of mutually contacting adjustment sleeves are sleeved outside the adjustment shaft. The hinge member includes a threaded hole hinge head and a number of eccentric hinge heads. The threaded hole hinge head is threadedly connected to the thread ring opened on the outer surface of the rear end of the adjustment shaft. One end of the threaded hole hinge head away from the adjustment shaft is successively hinged with a number of eccentric hinge heads through a number of pins;

[0007] The protection mechanism includes a strain clamp protective sleeve and an upper buckle cover fixed by screws. A strain clamp is installed between the strain clamp protective sleeve and the upper buckle cover. A snake joint and a rubber head are also installed on the right side of the protection mechanism;

[0008] The left end of the strain clamp protective sleeve is hinged to the adjacent eccentric hinge head through a hinge head. Groove groups adapted to the strain clamp are opened on the adjacent side walls of the strain clamp protective sleeve and the upper buckle cover. A through groove for the drainage plate of the strain clamp to penetrate is also opened at the upper buckle cover.

[0009] Further, the adjustment shaft includes an integrally formed threaded shaft section, an eccentric shaft section, and a hinged shaft section. The threaded shaft section and the hinged shaft section are respectively provided with an anti-rotation hole and a pin shaft hole. The adjustment shaft is hinged to the pin shaft hole through a pin shaft. The adjustment sleeve is sleeved outside the eccentric shaft section, and a shaft shoulder for limiting the adjustment sleeve is sleeved on the outer ring of the eccentric shaft section.

[0010] Further, retaining rings for limiting the adjustment sleeve are sleeved at both ends of the eccentric shaft section.

[0011] Further, the threaded hole hinge head and the anti-rotation hole are reinforced by a penetrating anti-rotation screw, which can prevent the thread connection from loosening due to the torque on the wire.

[0012] Further, the strain clamp includes a steel anchor, a compression pipe, and a drainage plate. The drainage plate is integrally formed with the outer ring of the compression pipe. The compression pipe and the internal wire are compression-molded with the steel anchor through a compression machine. The steel anchor is hinged with a rotary connector through a pin.

[0013] Further, the groove group includes a rotary connector card slot corresponding to the rotary connector, a compression pipe slot corresponding to the steel anchor and the compression pipe, and a rubber head card slot corresponding to the rubber head, which are opened in the strain clamp protective sleeve and the upper buckle cover. Snake joint card slots corresponding to the snake joints are provided on the outer surfaces of the right sides of the strain clamp protective sleeve and the upper buckle cover.

[0014] Further, a set of corresponding threaded holes are respectively opened at the left and right ends of the strain clamp protective sleeve and the upper buckle cover. The two groups of threaded holes are fixed by bolts. Positioning grooves and positioning protrusions for positioning are respectively provided on the side surfaces of the strain clamp protective sleeve and the upper buckle cover close to each other.

[0015] The utility model has the following beneficial effects compared with the prior art:

[0016] 1. The wire can be directly compression-connected to the strain clamp on the ground, and then the operation process of traction through the pulley can be carried out. Due to the function of the rotary connectors at both ends, the drainage plate on the strain clamp is in any orientation. When the adjustment sleeve passes through the pulley, due to a certain included angle between the traction direction and the tangent direction at the acting point, the adjustment sleeve generates a positive pressure on the pulley under the action of the traction force. The reaction force of the pulley on the adjustment sleeve and the eccentric force arm of the adjustment shaft generate a moment, which causes the adjustment shaft to flip to a state where the moment is zero to reach an equilibrium state, that is, the posture where the drainage plate is vertically upward. In this way, it can pass through the pulley safely and smoothly according to the predetermined posture, reducing the workload of high-altitude operation of personnel and improving the mechanized construction level and operation efficiency.

[0017] 2. At the same time, the automatic adjustment device for the strain clamp to pass through the pulley has a compact structure, small volume, light weight, and good passing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional view of the utility model.

[0019] Figure 2 This is the top view of the automatic adjustment mechanism in the present utility model.

[0020] Figure 3 This is the sectional view of the automatic adjustment mechanism in the front view direction of the present utility model.

[0021] Figure 4 This is the structural schematic diagram of the adjustment shaft in the present utility model.

[0022] Figure 5 This is the disassembly schematic diagram of the strain clamp protective sleeve, upper buckle cover and strain clamp in the present utility model.

[0023] Figure 6 This is the structural schematic diagram of the strain clamp in the present utility model.

[0024] In the figure: 1. Automatic adjustment mechanism; 101. Hinged traction head; 102. Pin shaft; 103. Adjustment shaft; 1031. Threaded shaft section; 1032. Anti-rotation hole; 1033. Eccentric shaft section; 1034. Axle shoulder; 1035. Hinged shaft section; 1036. Pin shaft hole; 104. Adjusting sleeve; 105. Retaining ring; 106. Threaded hole hinge head; 107. Anti-rotation screw; 108. Eccentric hinge head; 2. Protection mechanism; 201. Strain clamp protective sleeve; 2011. Rotating connection head card slot; 2012. Pressing pipe slot; 2013. Rubber head card slot; 2014. Snake joint card slot; 202. Upper buckle cover; 203. Strain clamp; 2031. Steel anchor; 2032. Pressing pipe; 2033. Drainage plate; 2034. Rotating connection head; 204. Hinge head; 205. Rubber head; 206. Threaded hole; 207. Positioning protrusion. Detailed implementation manners

[0025] For the convenience of understanding the present utility model, the device of the present utility model will be described more comprehensively below with reference to the relevant drawings. Embodiments of the device are shown in the drawings. However, the device can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0026] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "set" should be understood in a broad sense. For example, they can be fixedly connected, set, or detachably connected, set, or integrally connected, set. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] Embodiment

[0028] As Figure 1As shown in the figure, this embodiment provides a tension clamp automatic adjustment mechanism for passing over a pulley, which includes an automatically adjustable mechanism 1 and a protection mechanism 2 that are movably connected. The automatically adjustable mechanism 1 is used to automatically adjust the attitude of the drainage plate 2033 to ensure that the entire device can pass through the pulley smoothly. The protection mechanism 2 is used to protect the tension clamp 203 and the wire inside it from damage. For the design of the two-section hinge connection, when connecting and aligning, it is necessary to keep the drainage plate 2033 upright, so that the short side of the eccentric shaft section 1033 at the adjustment shaft 103 of the automatically adjustable mechanism 1 is below the axis of this automatic adjustment device;

[0029] As Figures 2 - 3 shown, the automatically adjustable mechanism 1 includes a hinged traction head 101, an adjustment shaft 103, several adjustment sleeves 104 and a hinge member. The front end of the adjustment shaft 103 is movably connected to the hinged traction head 101. Several mutually contacting adjustment sleeves 104 are sleeved on the outer ring of the adjustment shaft 103. The hinge member includes a threaded hole hinge head 106 and several eccentric hinge heads 108. The threaded hole hinge head 106 is threadedly connected to the thread ring opened on the outer surface of the rear end of the adjustment shaft 103. One end of the threaded hole hinge head 106 away from the adjustment shaft 103 is successively hinged with several eccentric hinge heads 108 through several pins. It should be noted that both the hinged ends of the threaded hole hinge head 106 and the eccentric hinge head 108 are located below the axis of the automatically adjustable mechanism 1. The eccentric hinge head 108 is beneficial to the flipping and passing of this automatic adjustment device over the pulley, and at the same time can release the bending moment, so that the overall bending strength of the automatic adjustment device meets the requirements of the wire laying construction;

[0030] Specifically, as Figure 4 shown, the adjustment shaft 103 includes an integrally formed threaded shaft section 1031, an eccentric shaft section 1033 and a hinged shaft section 1035. The threaded shaft section 1031 and the hinged shaft section 1035 are respectively provided with an anti-rotation hole 1032 and a pin shaft hole 1036. The threaded hole hinge head 106 and the threaded shaft section 1031 are reinforced by an anti-rotation screw 107 to prevent the threaded connection between the threaded hole hinge head 106 and the adjustment shaft 103 from failing due to the torque on the wire. The adjustment shaft 103 is hinged to the pin shaft hole 1036 through a pin shaft 102, that is, the hinged connection between the adjustment shaft 103 and the hinged traction head 101 is realized (or a rotary connector can be directly connected according to the actual situation). The adjustment sleeve 104 is sleeved on the outside of the eccentric shaft section 1033, and a shoulder 1034 for limiting the adjustment sleeve 104 is sleeved on the outer ring of the eccentric shaft section 1033. Retaining rings 105 for limiting the adjustment sleeve 104 are sleeved at both ends of the eccentric shaft section 1033;

[0031] As Figures 5 - 6As shown in the figure, the protection mechanism 2 includes a strain clamp protective sleeve 201 and an upper buckle cover 202 fixed by screws. The two form a circular tubular structure, which has the advantages of small size, light weight and good passability. A set of corresponding threaded holes 206 are respectively opened at the left and right ends of the strain clamp protective sleeve 201 and the upper buckle cover 202. The two sets of threaded holes 206 are fixed by bolts. On the side surfaces of the strain clamp protective sleeve 201 and the upper buckle cover 202 close to each other, there are respectively a positioning groove and a positioning protrusion 207 for positioning, which is convenient for positioning during installation. A strain clamp 203 is installed between the strain clamp protective sleeve 201 and the upper buckle cover 202. The strain clamp 203 includes a steel anchor 2031, a compression joint tube 2032 and a drainage plate 2033. The drainage plate 2033 is integrally formed with the outer ring of the compression joint tube 2032. The compression joint tube 2032 and the internal wire are compression-molded with the steel anchor 2031 through a compression machine. The steel anchor 2031 is hinged with a rotary connector 2034 through a pin. On the right side of the protection mechanism 2, there are also installed a snake joint 204 and a rubber head 205 for protecting the wire;

[0032] The left end of the strain clamp protective sleeve 201 is hinged with an adjacent eccentric hinge joint 108 through a hinge joint 204. On the side walls of the strain clamp protective sleeve 201 and the upper buckle cover 202 adjacent to each other, there are respectively a set of grooves adapted to the strain clamp 203. At the upper buckle cover 202, there is also a through groove for the drainage plate 2033 of the strain clamp 203 to pass through;

[0033] Specifically, the set of grooves includes a rotary connector card slot 2011 corresponding to the rotary connector 2034, a compression joint tube slot 2012 corresponding to the steel anchor 2031 and the compression joint tube 2032, and a rubber head card slot 2013 corresponding to the rubber head 205, which are opened inside the strain clamp protective sleeve 201 and the upper buckle cover 202. On the outer surfaces of the right sides of the strain clamp protective sleeve 201 and the upper buckle cover 202, there is a snake joint card slot 2014 corresponding to the snake joint 204.

[0034] It should be noted that the structure described in the present invention can be implemented in many different forms and is not limited to the embodiments. Any equivalent transformation made by those of ordinary skill in the art using the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, such as the loading and unloading of other items, is included in the protection scope of the present invention.

Claims

1. An automatic adjustment mechanism for a tension wire clamp over a pulley, characterized in that: Including automatic adjustment mechanism and protection mechanism of movable connection; The automatic adjustment mechanism comprises an articulated traction head, an adjustment shaft, an adjustment sleeve and an articulated part. The front end of the adjustment shaft is movably connected to the articulated traction head. The outer ring sleeve of the adjustment shaft is provided with a plurality of adjustment sleeves in contact with each other. The articulated part comprises a threaded hole articulated head and a plurality of eccentric articulated heads. The threaded hole articulated head is threadedly connected to a threaded ring provided on the outer surface of the rear end of the adjustment shaft. The end of the threaded hole articulated head away from the adjustment shaft is articulated with a plurality of eccentric articulated heads in sequence through a plurality of pins. The protection mechanism includes a tension clamp protective sleeve and an upper buckle cover fixed by screws, a tension clamp is installed between the tension clamp protective sleeve and the upper buckle cover, and a snake joint and a rubber head are also installed on the right side of the protection mechanism; The left end of the tension wire clamp protective cover is hinged to the adjacent eccentric hinge joint through a hinge joint. A groove group compatible with the tension wire clamp is provided on the side wall adjacent to the tension wire clamp protective cover and the upper buckle cover. A through groove is also provided at the upper buckle cover for the drainage plate of the tension wire clamp to pass through.

2. The automatic adjustment mechanism for a tension wire clamp over a pulley as claimed in claim 1, characterized in that: The adjusting shaft comprises an integrally formed threaded shaft section, an eccentric shaft section and an articulated shaft section. The threaded shaft section and the articulated shaft section are respectively provided with a stop hole and a pin hole. The adjusting shaft is hinged to the pin hole through a pin. The adjusting sleeve is arranged on the outside of the eccentric shaft section, and the outer ring of the eccentric shaft section is provided with a shoulder for limiting the adjusting sleeve.

3. The automatic adjustment mechanism for a tension wire clamp over a pulley as claimed in claim 2, characterized in that: Both ends of the eccentric shaft section are sleeved with retaining rings for limiting and adjusting sleeves.

4. The automatic adjustment mechanism for a tension wire clamp over a pulley as claimed in claim 2, characterized in that: The threaded hole hinge joint and the threaded shaft section are reinforced by a rotation-stop screw.

5. The automatic adjustment mechanism for a tension wire clamp over a pulley as claimed in claim 1, characterized in that: The tension clamp comprises a steel anchor, a crimping tube and a drainage plate. The drainage plate is integrally formed with the outer ring of the crimping tube. The crimping tube and the inner conductor are crimped with the steel anchor by a crimping machine. The steel anchor is hinged with a rotating connector by a pin.

6. The automatic adjustment mechanism for a tension wire clamp over a pulley as claimed in claim 5, characterized in that: The slot group includes a rotating connector slot, a crimping tube slot, and a rubber head slot which are opened inside the tension clamp protective sleeve and the upper buckle cover, and a snake joint slot is provided on the outer surface of the right side of the tension clamp protective sleeve and the upper buckle cover.

7. The automatic adjustment mechanism for a tension wire clamp over a pulley as claimed in claim 1, characterized in that: The left and right ends of the tension clamp protective sleeve and the upper buckle cover are respectively provided with a group of corresponding threaded holes, and the two groups of threaded holes are fixed by bolts. The side surfaces of the tension clamp protective sleeve and the upper buckle cover close to each other are respectively provided with positioning grooves and positioning protrusions for positioning.

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