A locking type electric wire release pulley device

Abstract

The present invention proposes a locking type electric wire-releasing pulley device, which belongs to the technical field of electric power construction, and comprises a supporting body, a pulley mechanism and a locking mechanism. The supporting body comprises a base, and a first supporting frame and a second supporting frame are arranged on the top surface of the base. The pulley mechanism comprises a pulley, and a wire-releasing channel with a top opening is formed by enclosing the first and second supporting frames and the grooves on the upper part of the pulley; the locking mechanism cooperates with the block to open or lock the opening of the wire-releasing channel, thereby ensuring that the cable will not fall out when being pulled, and reducing the number of times the staff climb the pole; by arranging extension rods on the top of the supporting body, the opening of the wire-releasing channel is enlarged; a base is arranged at the bottom, and the cable is not easy to swing when passing through the pulley; the cable is passed through three devices distributed in a herringbone shape, and the force is uniform in all directions, and the rolling contact with the pulley reduces friction, thereby reducing the probability of scratching the insulation layer of the cable.

Description

Technical Field

[0001] The invention relates to the technical field of electric power construction, and in particular to a locking electric power pay-off pulley device. Background Art

[0002] With the increase of infrastructure construction and the expansion of power supply areas, a large number of electric poles need to be erected and cables and wires need to be laid in the process of power line network reconstruction and expansion for power supply. At present, the commonly used wire laying construction process mainly uses wire laying pulleys for wire laying. The existing wire laying pulleys are installed with pulleys between a "U"-shaped bracket, and the "U"-shaped bracket is clamped and fixed on the crossarm or pole. The cable is laid through the pulley. The main problems of the above wire laying operation are:

[0003] 1. During the cable laying process, the cable often jumps out of the pulley bracket, causing the cable laying to be suspended. At this time, the staff needs to climb up the pole to put the cable back into the pulley, which makes the cable laying time-consuming and labor-intensive;

[0004] 2. When using tools such as drones to lay out cables, the opening of the laying channel is small, making it difficult to quickly and accurately place the cable guide wire into the laying channel;

[0005] 3. The bracket is not fixed firmly, causing the cable to swing in all directions due to uneven force when passing through the pulley, resulting in friction between the cable and the baffles on both sides of the bracket, scratching the cable insulation layer;

[0006] Therefore, there is an urgent need to improve the electric wire-releasing pulley device and provide a locking electric wire-releasing pulley device. Summary of the invention

[0007] The object of the present invention is to provide a locking electric wire-releasing pulley device to solve the problems in the prior art proposed in the above background technology that the cable is often pulled off the pulley when the cable is pulled and released; when tools such as drones are used for releasing the cable, the opening of the wire-releasing channel is small, and it is difficult to quickly and accurately place the cable guide wire into the wire-releasing channel; and the bracket is not firmly fixed, resulting in uneven force and swinging in all directions when the cable passes through the pulley, causing friction between the cable and the baffles on both sides of the bracket, scratching the cable insulation layer and.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A locking electric wire-releasing pulley device, comprising a supporting body, a pulley mechanism and a locking mechanism, wherein the supporting body comprises a base, a first supporting frame and a second supporting frame are vertically arranged on the top surface of the base and are symmetrical to each other, the pulley mechanism comprises a pulley and a rotating shaft fixed between the first supporting frame and the second supporting frame and for the pulley to be sleeved and connected, the pulley is a disc with a groove in the middle and protrusions on both sides, a stopper is arranged on the top of the protrusion on one side of the disc close to the first supporting frame, and the grooves between the first and second supporting frames and the upper part of the pulley are combined to form a wire-releasing channel with an opening on the top;

[0010] The locking mechanism comprises a locking frame, a torsion spring, a pin and a pin shaft passing through the top of the first supporting frame, the locking frame is sleeved on the pin shaft and rotates relative to the pin shaft, the locking frame is formed into an integral L-shaped structure by a first limiting portion and a second limiting portion, the first limiting portion is provided with a first through hole, and the first supporting frame is provided with a second through hole adapted to the block; after the pin passes through the first through hole, its fixed end is restricted on the first limiting portion, and the movable end of the pin is bent and passes through the second through hole and extends to one side of the pulley; the torsion spring is arranged in the locking frame and sleeved on the pin shaft, one end of which abuts against the first limiting portion, and the other end is fixed on the first supporting frame for resetting the locking frame; the locking mechanism cooperates with the block to open or lock the opening of the wire-releasing channel, and when the pulley rotates and drives the block to touch the movable end of the pin, the opening of the wire-releasing channel can be locked.

[0011] Furthermore, the cross-sections of the first and second support frames are both U-shaped structures, and the U-shaped openings thereof are both arranged outwards and fixed on the base back to back.

[0012] Furthermore, the first and second support frames are provided with lifting ears on both sides of the top, and a U-shaped groove is opened in the middle. The U-shaped groove opens upward, and the depth of the U-shaped groove is less than the length of the first limiting portion.

[0013] Furthermore, the first and second support frames are each provided with an arc-shaped protrusion adapted to the outer edge of the pulley in the middle, and the second through hole is located at the intersection of the vertical center line of the first support frame and the arc-shaped protrusion.

[0014] Furthermore, the first limiting portion of the locking frame is in the shape of an elongated strip, and the two arms extending from the long sides on both sides of one end of the first limiting portion are the second limiting portions, and the second limiting portion is movably connected to the lifting ear of the first support frame through a pin shaft at the corner near the first and second limiting portions.

[0015] Furthermore, the first limiting portion passes through the U-shaped groove of the first supporting frame, enters the wire-releasing channel, and moves with the pin shaft as the center of the circle. The movement angle of the first limiting portion relative to the first supporting frame is 10° to 90°.

[0016] Further, a third through hole is also provided below the U-shaped groove of the first support frame, and one end of the torsion spring abuts against the first limiting portion, and the other end is fixedly connected to the third through hole.

[0017] Further, a damper is arranged inside the rotating shaft. The damper is used to control the pulley to be stationary or rotating according to the weight of the wire rope moving on the pulley. The damper is an adjustable damper and can adjust a suitable damping value according to the weight of the wire rope.

[0018] Further, the cross section of the base is U-shaped, and the U-shaped opening is a clamping opening. Two screw holes are opened at the bottom end of the base, and bolts pass through the two screw holes to fix the base.

[0019] Further, extension rods are provided at the tops of the first and second support frames, and inverted V-shaped guiding channels are formed between the first and second support frames and their respective extension rods.

[0020] In summary, the beneficial effects of the present invention are as follows:

[0021] 1. For the locking type electric cable laying pulley device of the present invention, through the cooperation of the locking mechanism and the stopper on the pulley, the opening of the cable laying channel is opened or locked. When the locking mechanism is in the locked state, when pulling the cable in the cable laying channel, the cable will not fall out of the cable laying channel; when the locking mechanism is in the open state, it is convenient to wind and unwind the cable, reducing the number of times for the staff to climb the pole to put the fallen cable back into the cable laying channel;

[0022] 2. For the locking type electric cable laying pulley device of the present invention, by respectively arranging extension rods extending obliquely upward at the tops of the first and second support frames, an inverted V-shaped guiding channel is formed with the first and second support frames, increasing the opening of the cable laying channel. When laying the cable by means of an unmanned aerial vehicle or the like, through the guiding channel, the cable guiding wire is guided into the cable laying channel, and then locked by the locking mechanism, so that the cable guiding wire can be quickly and accurately put into the cable laying channel;

[0023] 3. For the locking type electric cable laying pulley device of the present invention, a base with a U-shaped cross section and bolts for fixing are provided at the bottom, which can facilitate the installation or disassembly of the device. And because of the firm fixation, when the cable passes through the pulley, it is not easy to swing; at the same time, three locking type electric cable laying pulley devices are distributed in a "pin" shape, and the cable passes through the cable laying channels of the three locking type electric cable laying pulley devices, so that the cable is uniformly stressed in all directions and is in rolling contact with the pulley, reducing the friction between the cable and the support frame, and effectively solving the problem of scratching the insulating layer of the cable caused by the prior art. Description of the Drawings

[0024] Figure 1 is a schematic diagram of the locked state of the locking mechanism of the present invention;

[0025] Figure 2 It is a schematic diagram of the locking mechanism of the present invention in an open state;

[0026] Figure 3 is a side view of the present invention;

[0027] Figure 4 It is a partial schematic diagram of the locking mechanism and the stopper of the present invention;

[0028] Figure 5 It is a partial schematic diagram of the locking mechanism of the present invention;

[0029] Figure 6 is a schematic diagram of a second embodiment of the present invention;

[0030] Among them: 100-support body, 110-base, 111-bolt, 120-first support frame, 121-second through hole, 123-third through hole, 130-second support frame, 140-arc-shaped protrusion, 200-pulley mechanism, 210-rotating shaft, 220-block, 300-locking mechanism, 310-locking frame, 311-first limiting part, 312-second limiting part, 313-first through hole, 330-pin, 331-fixed end, 332-movable end, 340-pin shaft, 350-torsion spring, 360-extension rod. DETAILED DESCRIPTION

[0031] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments given here are only used to illustrate and explain the present invention, and cannot be used to limit the present invention.

[0032] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention may also have other implementations and variations thereof. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0033] like Figure 1-3 As shown, the first embodiment of the present invention: a locking electric wire-releasing pulley device, comprising a supporting body 100, a pulley mechanism 200 and a locking mechanism 300, the supporting body 100 comprises a base 110, a first supporting frame 120 and a second supporting frame 130 are vertically set up on the top surface of the base 110, and the pulley mechanism 200 comprises a pulley and a rotating shaft 210 fixedly arranged between the first supporting frame 120 and the second supporting frame 130 for the pulley sleeve to be connected, the pulley is a disc with a groove in the middle and protrusions on both sides, a stopper 220 is arranged on the top of the protrusion on one side of the disc close to the first supporting frame 120, and the grooves between the first and second supporting frames and the upper part of the pulley form a wire-releasing channel with an opening on the top;

[0034] The locking mechanism 300 includes a locking frame 310, a torsion spring 350, a pin 330 and a pin shaft 340 passing through the top of the first support frame 120. The locking frame 310 is sleeved on the pin shaft 340 and rotates relative to the pin shaft 340. The locking frame 310 is formed into an integral L-shaped structure by a first limiting portion 311 and a second limiting portion 312. The first limiting portion 311 is provided with a first through hole 313, and the first support frame 120 is provided with a second through hole 121 adapted to the stopper 220. After the pin 330 passes through the first through hole 313, its fixed end 331 is limited in the On the first limiting portion 311, the movable end 332 of the pin 330 is bent and passes through the second through hole 121 and extends to one side of the pulley; the torsion spring 350 is arranged in the locking frame 310 and is sleeved on the pin shaft 340, one end of which abuts against the first limiting portion 311, and the other end is fixed on the first supporting frame 120, which is used to reset the locking frame 310; the locking mechanism 300 cooperates with the block 220 to open or lock the opening of the line-releasing channel, and when the pulley rotates and drives the block 220 to touch the movable end 332 of the pin 330, the opening of the line-releasing channel can be locked.

[0035] like Figure 1 As shown, the cross sections of the first and second support frames are both U-shaped structures, and the U-shaped openings thereof are both arranged outwards, and are fixed on the base 110 back to back.

[0036] like Figure 1 As shown, the first and second support frames are provided with lifting ears on both sides of the top, and a U-shaped groove is opened in the middle. The U-shaped groove opens upward, and the depth of the U-shaped groove is less than the length of the first limiting portion 311.

[0037] like Figure 1-2 As shown, the first and second support frames are each provided with an arc-shaped protrusion 140 adapted to the outer edge of the pulley in the middle, and the second through hole 121 is located at the intersection of the vertical center line of the first support frame 120 and the arc-shaped protrusion 140 .

[0038] like Figure 4-5 As shown, the first limiting portion 311 of the locking frame 310 is in the shape of an elongated strip, and the two arms extending from the long sides on both sides of one end of the first limiting portion 311 are the second limiting portions 312. The second limiting portion 312 is movably connected to the lifting ear of the first support frame 120 through a pin shaft 340 at the corner near the first and second limiting portions.

[0039] like Figure 4-5As shown, the first limiting portion 311 passes through the U-shaped groove of the first support frame 120, enters the wire-releasing channel, and moves with the pin shaft 340 as the center of the circle. The movement angle of the first limiting portion 311 relative to the first support frame 120 is 10° to 90°.

[0040] like Figure 3 As shown, a third through hole 123 is further provided below the U-shaped groove of the first support frame 120 , one end of the torsion spring 350 abuts against the first limiting portion 311 , and the other end is fixedly connected to the third through hole 123 .

[0041] During actual operation, a damper (not shown in the figure) is arranged in the rotating shaft 210, and the damper is used to control the pulley to be stationary or rotating according to the weight of the moving rope on the pulley. When a lighter rope (for example, a traction line) passes through the pulley, there is sliding friction between the lighter rope and the pulley. Due to the action of the damper, the pulley is stationary. At this time, the block 220 does not contact the locking mechanism 300, and the opening of the wire-releasing channel is opened; when a heavier rope (for example, a cable) passes through the pulley, there is rolling friction between the heavier rope and the pulley. Due to the action of the damper, the pulley rotates. At this time, the block 220 contacts the locking mechanism 300, and the opening of the wire-releasing channel is locked.

[0042] Preferably, the damper is an adjustable damper, and a suitable damping value can be adjusted according to the weight of the wire rope to control the pulley to be stationary or rotated.

[0043] like Figure 3 As shown, the cross section of the base 110 is U-shaped, the U-shaped opening is a clamping opening, and two screw holes are opened at the bottom end of the base 110. Bolts 111 pass through the two screw holes to fix the base 110.

[0044] The second embodiment of the present invention is different from the first embodiment in that:

[0045] When using drones or other methods to release the line, due to the small load capacity of the drone, the drone can only carry a lighter traction rope and put it into the line-releasing channel. Subsequently, the cable is finally pulled into the line-releasing channel by gradually increasing the weight of the traction ropes.

[0046] like Figure 6 As shown, since the opening of the line-releasing channel is small and the line-releasing is difficult, extension rods 360 are provided on the top of the first and second support frames, and the first and second support frames and the respective extension rods 360 form an inverted V-shaped guide channel. The traction line enters the line-releasing channel through the guide channel, and will not suddenly unload the force and become uncontrolled and unstable due to the transformation of sliding friction into rolling friction, thereby ensuring that the UAV is under stable force when dragging the traction line.

[0047] During actual operation, three of these devices can also be installed on the crossarm of the utility pole in a "pin" shape distribution. The cable passes through the wire laying channels of the three devices, enabling the cable to be evenly stressed in all directions and rollingly contacting the pulley 200, reducing the friction between the cable and the inner sides of the first and second support frames, and solving the problem of scratching the cable insulation layer.

[0048] The working principle of the locking type electric wire laying pulley device of the first embodiment of the present invention is as follows:

[0049] First, fix the base 110 of the present invention to the crossarm of the utility pole through bolts 111. Insert the movable end 332 of the pin 330 into the second through hole 121. Under the pulling force of the pin 330, the first limiting portion 311 of the locking frame 310 is fixed at a position 10° with respect to the first support frame 120. At this time, the locking mechanism 300 is in an open state, and the cable is placed on the pulley in the wire laying channel.

[0050] Then, pull the cable. The pulley rolls as the cable is pulled. When the block 220 on the pulley touches the movable end 332 of the pin 330, the movable end 332 of the pin 330 is pushed out of the second through hole 121 by the block 220. Due to the elasticity of the torsion spring 350, the first limiting portion 311 of the locking frame 310 resets to a position 90° with respect to the first support frame 120. At this time, the locking mechanism 300 is in a locked state. Continuing to pull the cable in the wire laying channel, the cable will not fall out of the wire laying channel.

[0051] When the wire laying is completed, the staff climbs the pole to insert the movable end 332 of the pin 330 into the second through hole 121. The locking mechanism 300 is in an open state, and the cable is taken out for subsequent installation. After the cable installation is completed, the base 110 of this device is removed from the crossarm of the utility pole and can be reused.

[0052] It should be understood that the above embodiments are one or more embodiments of the present invention. Based on the present invention, there are many other embodiments and their variations. When ordinary technicians in this industry do not make pioneering innovations, the variations and modifications made through the present invention all fall within the protection scope of the present invention.

Claims

1. A locking electric wire-releasing pulley device, characterized in that: It includes a support body, a pulley mechanism and a locking mechanism, the support body includes a base, a first support frame and a second support frame are vertically set up on the top surface of the base, and the pulley mechanism includes a pulley and a rotating shaft fixed between the first support frame and the second support frame for the pulley sleeve to connect, the pulley is a disc with a groove in the middle and protrusions on both sides, and is characterized in that a stopper is provided on the top of the protrusion on one side of the disc close to the first support frame, and the grooves between the first and second support frames and the upper part of the pulley are combined to form a wire-releasing channel with an opening on the top; The locking mechanism comprises a locking frame, a torsion spring, a pin and a pin shaft passing through the top of the first supporting frame, the locking frame is sleeved on the pin shaft and rotates relative to the pin shaft, the locking frame is formed into an integral L-shaped structure by a first limiting portion and a second limiting portion, the first limiting portion is provided with a first through hole, and the first supporting frame is provided with a second through hole adapted to the block; after the pin passes through the first through hole, its fixed end is restricted on the first limiting portion, and the movable end of the pin is bent and passes through the second through hole and extends to one side of the pulley; the torsion spring is arranged in the locking frame and sleeved on the pin shaft, one end of which abuts against the first limiting portion, and the other end is fixed on the first supporting frame for resetting the locking frame; the locking mechanism cooperates with the block to open or lock the opening of the wire-releasing channel, and when the pulley rotates and drives the block to touch the movable end of the pin, the opening of the wire-releasing channel can be locked. A damper is arranged in the rotating shaft, and the damper is used to control the pulley to be stationary or rotate according to the weight of the moving rope on the pulley. The damper is an adjustable damper, and a suitable damping value can be adjusted according to the weight of the rope.

2. The locking electric wire-releasing pulley device according to claim 1, characterized in that: The first and second support frames are both U-shaped in cross section, with their U-shaped openings facing outwards and fixed on the base back to back.

3. The locking electric wire-releasing pulley device according to claim 2, characterized in that: The first and second support frames are provided with lifting ears on both sides of the top, and a U-shaped groove is opened in the middle. The U-shaped groove opens upward, and the depth of the U-shaped groove is less than the length of the first limiting part.

4. The locking electric wire-releasing pulley device according to claim 3, characterized in that: The first and second support frames are both provided with arc-shaped protrusions adapted to the outer edge of the pulley in the middle, and the second through hole is located at the intersection of the vertical center line of the first support frame and the arc-shaped protrusion.

5. The locking electric wire-releasing pulley device according to claim 3, characterized in that: The first limiting portion of the locking frame is in the shape of an elongated strip, and two arms extending from the long sides on both sides of one end of the first limiting portion are the second limiting portions. The second limiting portion is movably connected to the lifting ear of the first supporting frame through a pin at a corner near the first and second limiting portions.

6. The locking electric wire-releasing pulley device according to claim 5, characterized in that: The first limiting portion passes through the U-shaped groove of the first supporting frame, enters the wire-releasing channel, and moves with the pin shaft as the center of the circle. The movement angle of the first limiting portion relative to the first supporting frame is 10° to 90°.

7. The locking electric wire-releasing pulley device according to claim 6, characterized in that: A third through hole is further provided below the U-shaped groove of the first support frame. One end of the torsion spring abuts against the first limiting portion, and the other end is fixedly connected to the third through hole.

8. The locking electric wire-releasing pulley device according to claim 1, characterized in that: The cross section of the base is U-shaped, the U-shaped opening is a clamping opening, and two screw holes are opened at the bottom end of the base. Bolts pass through the two screw holes to fix the base.

9. The locking electric wire-releasing pulley device according to claims 1-8, characterized in that: The tops of the first and second support frames are both provided with extension rods, and the first and second support frames and the respective extension rods form inverted V-shaped guide channels.

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