An auxiliary device for preventing the offset of a weight during conductor replacement.

Abstract

This utility model relates to the field of railway line installation and maintenance technology, and discloses an auxiliary device for preventing the weight from shifting during conductor replacement. It includes a clamp that holds the weight in place and two pulleys positioned below the weight. The two pulleys are symmetrically arranged on both sides of the weight's axis, with the distance between them greater than the weight's diameter. One side of the clamp has a cable fixedly connected to it at one end. The other end of the cable passes around the two pulleys and is fixedly connected to the other side of the clamp, forming an isosceles trapezoid. When the weight shifts upward due to tension, the cable can hold it in place, preventing excessive upward movement. Because the cable no longer contacts the edge of the weight, and the contact points are free of sharp edges, the cable is protected from breaking due to excessive local shear force. The cable is symmetrically positioned on both sides of the clamp, ensuring uniform tension on both sides of the weight and preventing it from swinging around the guide rod when shifting upward.

Description

Technical Field

[0001] This utility model relates to the field of railway line installation and maintenance technology, and in particular to an auxiliary device for preventing the offset of a weight during conductor replacement. Background Technology

[0002] Figure 5 The diagram shows a commonly used conductor support structure. A pole 9 is erected alongside the railway line. From bottom to top, a lower support arm 1 and an upper support arm 29 are installed on the pole 9. Both the upper and lower support arms are made of angle steel. A vertical guide rod 8 is installed between the upper and lower support arms 29 and 1. Two conductors 28 are connected to compensating ropes 7. One end of each compensating rope 7 passes over a corresponding pulley system and is connected to the corresponding conductor 28 via an insulator string. The other end is tied with a string of weights 5. The strings of weights 5 are slidably connected to the guide rod 8 via a central clamp. When the length of the conductor 28 changes due to thermal expansion and contraction, the weights 5 move up and down along the guide rod 8, thereby compensating for the length change of the conductor 28.

[0003] When it is necessary to replace the conductor 28, the weight 5 must first be held in place by the cable 3. One end of the cable 3 is tied to the top of the weight 5, and the other end is tied to the lower support arm 1. The cable 3 is usually made of double-strand iron wire with a diameter of 4.0 mm.

[0004] After the old conductor 28 is removed, the tension of the new conductor 28 is applied to the compensating rope 7, thereby suddenly applying an upward force to the weight 5. The cable 3 can prevent the weight 5 from rising excessively, but the upward force of the compensating rope 7 will act on the cable 3. Since the right-angled edge of the weight 5 abuts against the cable 3, part of the force is applied to the cable 3 through the edge of the weight 5, resulting in a large shear force on the cable 3 at this part. Moreover, after being subjected to force, the cable 3 is also prone to sliding along the edge of the weight 5 and friction between it and the weight 5, causing damage and making it easy to break the cable 3.

[0005] In addition, to ensure safety and prevent the weight 5 from accidentally falling and injuring the operator, the cable 3 is usually tied to the lower support arm 1 on the side of the guide rod 8 away from the weight 5. This causes the weight 5 to swing around the guide rod 8 when it moves upward, and the total weight of the weight 5 is usually around 500 kg or even heavier, which is very dangerous when it swings. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide an auxiliary device for preventing the sinker from shifting during conductor replacement, which solves the problem that the sinker may easily break the cable or cause the sinker to swing when it shifts upward during conductor replacement.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] An auxiliary device for preventing the offset of a weight during conductor replacement includes a clamp that is fastened to the weight and two pulleys located below the weight. The two pulleys are symmetrically arranged on both sides of the axis of the weight, and the distance between the two pulleys is greater than the diameter of the weight. One side of the clamp is provided with a cable that is fixedly connected to it at one end. The other end of the cable passes around the two pulleys in sequence and is fixedly connected to the other side of the clamp, so that the direction of the cable forms an isosceles trapezoid. All the pulleys are rotatably connected to the lower support arm below the weight.

[0009] Furthermore, the lower support arm is made of angle steel, and a base plate is provided below the pulley, with one end hanging on the top edge of the lower support arm. The pulley is rotatably connected to the base plate, and a vertical pull rod is rotatably connected to the other end of the base plate. A second hook is hung on the lower edge of the lower support arm, and the lower end of the pull rod is fitted with the second hook through a clearance. A wing nut is screwed onto the lower end of the pull rod to press the second hook tightly against the bottom of the lower support arm.

[0010] Furthermore, the clamp is fastened to the upper weight. The clamp includes a ring covering the outer circumference of the weight. The ring has a notch, and lugs are fixedly connected to both sides of the notch. Bolts are threaded through the lugs, and nuts are screwed onto the ends of the bolts. After tightening the nuts, the ring is fastened to the outer circumference of the weight. Two first lifting rings are fixedly connected to the ring. The two first lifting rings are spaced 180° apart along the circumference of the ring, and the two ends of the cable are respectively tied to the two first lifting rings.

[0011] Furthermore, at least two stop bars are evenly distributed on the top of the ring. One end of each stop bar is fixedly connected to the ring, and the other end extends toward the center of the ring. The stop bar rests against the top surface of the weight.

[0012] Furthermore, the cable is also provided with a buffer component, which includes a sleeve and a sliding rod elastically connected to the sleeve. The cable breaks at the location of the buffer component, and the sliding rod and the sleeve are respectively fixedly connected to the two ends of the cable that break at the location of the buffer component.

[0013] Furthermore, one end of the sleeve is sealed and the other end is open. The sliding rod is slidably connected to the sealed end of the sleeve. Several disc springs are sleeved on the sliding rod. The end of the sliding rod located inside the sleeve is provided with a flange for axially limiting the disc springs. An end cap is screwed onto the open end of the sleeve. A second lifting ring is fixedly connected to the outer side of the end cap and the outer end of the sliding rod. The two ends of the cable that break off at the location of the buffer component are respectively tied to the two second lifting rings.

[0014] Furthermore, it also includes a tensioner installed on the cable, with the tensioner and the buffer component respectively located on both sides of the weight.

[0015] The positive effects of this utility model are:

[0016] This invention includes a clamp, a pulley, and a cable. The clamp is held in place by the weight, and the cable is tied to both sides of the clamp and wound around the pulley, forming an isosceles trapezoid. When the weight rises under tension, the cable holds it in place, preventing excessive upward movement. Because the cable no longer contacts the edge of the weight, and the contact points are free of sharp edges, it prevents the cable from breaking due to excessive local shear force. The cable is symmetrically attached to both sides of the clamp, ensuring even tension on both sides of the weight and preventing it from swinging around the guide rod during upward movement. Attached Figure Description

[0017] Figure 1 This is a diagram illustrating the use of this utility model;

[0018] Figure 2 yes Figure 1 A schematic diagram showing the connection between the support arm and the pulley, viewed from the left side.

[0019] Figure 3 This is a top view of the clamp;

[0020] Figure 4 This is a cross-sectional view of the buffer component;

[0021] Figure 5 This is a schematic diagram illustrating the current anti-slip mechanism for the weight when replacing the conductor.

[0022] In the picture:

[0023] 1. Lower support arm; 2. Pulley; 3. Cable; 4. Tensioner; 5. Weight; 6. Clamp; 7. Compensating rope; 8. Guide rod; 9. Line pole; 10. Wing nut; 11. Second hook; 12. Pull rod; 13. Connecting column; 14. Base plate; 15. Wheel frame; 16. First hook; 17. Buffer component; 18. Ring; 19. First lifting ring; 20. Stop bar; 21. Lug; 22. Bolt; 23. Second lifting ring; 24. End cap; 25. Slide rod; 26. Disc spring; 27. Sleeve; 28. Conductor wire; 29. ​​Upper support arm. Detailed Implementation

[0024] Example 1

[0025] Taking the rightmost set of five weights as an example, such as... Figure 1 and Figure 3As shown, an auxiliary device for preventing the displacement of a weight during conductor replacement includes a clamp 6 and two pulleys 2 located below the weight 5. The two pulleys 2 are symmetrically arranged on both sides of the axis of the weight 5, and the distance between the two pulleys 2 is greater than the diameter of the weight 5. The clamp 6 is provided with a cable 3, one end of which is fixedly connected to its left side. The other end of the cable 3 passes around the left pulley 2 and the rear pulley 2 in sequence, and then is fixedly connected to the right side of the clamp 6, so that the cable 3 forms an isosceles trapezoid. Both pulleys 2 are rotatably connected to the lower support arm 1 below the weight 5.

[0026] The clamp 6 is secured to the uppermost weight piece 5. The clamp 6 includes a ring 18 made of flat iron wrapped around the outer circumference of the weight piece 5. The ring 18 has a notch, and the ring 18 is bent on both sides of the notch to form lugs 21. A bolt 22 is inserted through the lug 21, and a nut is screwed onto the end of the bolt 22. After tightening the nut, the ring 18 is secured to the outer circumference of the uppermost weight piece 5.

[0027] Two first lifting rings 19 are welded onto the ring 18. The two first lifting rings 19 are set at 180° intervals along the circumference of the ring 18. The two ends of the cable 3 are respectively tied with shackles, and the shackles are connected to the corresponding first lifting rings 19.

[0028] Five stop bars 20 are evenly distributed around the top of the ring 18 along the circumferential direction. One end of the stop bar 20 is welded to the top surface of the ring 18, and the other end extends radially toward the center of the ring 18. After the ring 18 is fastened to the weight 5, the stop bar 20 rests against the top surface of the weight 5.

[0029] The cable 3 is broken at the left end and a tensioner 4 is connected between the two broken ends. The tensioner 4 is a turnbuckle tensioner.

[0030] The usage process of this utility model is as follows:

[0031] 1. Pass the notch of the ring 18 through the compensation rope 7 at the top of the weight 5, put the ring 18 on the outside of the uppermost weight 5, press the stop bar 20 on the top surface of the weight 5, pass the bolt 22 through the lug 21 of the ring 18, and tighten the nut so that the ring 18 is tightly wrapped around the weight 5.

[0032] 2. Install two pulleys 2 on the lower support arm 1, pass the cable 3 through the two pulleys 2 in sequence, install shackles at both ends of the cable 3, connect the shackles to the corresponding first lifting ring 19, tighten the rope device 4, thereby pulling the weight 5 downward.

[0033] After replacing the conductor 28, when the weight 5 rises due to tension, the cable 3 can hold it in place, preventing excessive upward movement. Since the cable 3 no longer contacts the edge of the weight 5, and the contact points are free of sharp edges, it prevents the cable 3 from breaking due to excessive local shear force. The cable 3 is symmetrically stretched on both sides of the ring 18, ensuring even tension on both sides of the weight 5 and preventing it from swinging around the guide rod 8 during upward movement.

[0034] Since the distance between the two pulleys 2 is greater than the diameter of the weight 5, even if the weight 5 falls accidentally, it will not hit the installation position of the pulley 2, thereby reducing the risk of being directly injured by the weight 5 when installing the pulley 2.

[0035] Example 2

[0036] Combination Figure 2 As shown, the difference between this embodiment and Embodiment 1 is that:

[0037] A base plate 14 is provided under the pulley 2, and the right end of the base plate 14 is a first hook 16. A vertical wheel frame 15 is welded to the top surface of the base plate 14, and one side of the pulley 2 is rotatably connected to the wheel frame 15, so that the cable 3 can pass over the pulley 2. A vertical pull rod 12 is rotatably connected to the left end of the base plate 14, and a second hook 11 is hung on the lower edge of the lower support arm 1. The lower end of the pull rod 12 and the second hook 11 are fitted through a clearance, and a wing nut 10 is screwed onto the lower end of the pull rod 12. After tightening the wing nut 10, the second hook 11 is pressed against the bottom edge of the lower support arm 1.

[0038] The installation process for pulley 2 is as follows:

[0039] First, hook the first hook 16 onto the right end of the lower support arm 1. Then, rotate the pull rod 12 counterclockwise, and then tighten the wing nut 10 to move the second hook 11 upward, so that the second hook 11 hooks onto the bottom of the lower support arm 1. Thus, the pulley 2 can be easily installed onto or removed from the lower support arm 1, which is made of angle steel.

[0040] The upper end of the pull rod 12 is a connecting post 13 that is rotatably connected to the first hook 16. After tightening the wing nut 10, the outer circle of the connecting post 13 abuts against the left side of the lower support arm 1, thereby preventing the pulley 2 from moving left and right on the base plate 14 when under force, which would cause the first hook 16 to disengage.

[0041] During actual on-site construction, if the length of the angle steel of the lower support arm 1 is insufficient, an angle steel section can be added to the end of the original lower support arm 1 on-site. This angle steel can be connected to the original lower support arm 1 by bolts or by sleeves, so that the length of the lower support arm 1 meets the installation requirements of the pulley 2.

[0042] Example 3

[0043] Combination Figure 4 As shown, the difference between this embodiment and embodiment 4 is that:

[0044] A buffer component 17 is also provided on the cable 3 on the right side of the weight 5. The buffer component 17 includes a cylindrical sleeve 27 and a cylindrical slide rod 25 that is elastically connected to the sleeve 27. The cable 3 is disconnected at the location of the buffer component 17. The slide rod 25 and the sleeve 27 are respectively fixedly connected to the two ends of the cable 3 that are disconnected at the location of the buffer component 17.

[0045] The upper end of the sleeve 27 is sealed and the lower end is open. The upper end of the slide rod 25 is slidably connected to the upper end of the sleeve 27. Several disc springs 26 are sleeved on the slide rod 25. The lower end of the slide rod 25 has a flange for axially limiting the disc springs 26. The lower end of the sleeve 27 is screwed with an end cap 24. The lower side of the end cap 24 and the upper end of the slide rod 25 are both welded with second lifting rings 23. The two ends of the cable 3 that break at the location of the buffer component 17 are respectively tied to the two second lifting rings 23.

[0046] As the weight 5 rises, the disc spring 26 is compressed, causing the tension exerted by the weight 5 on the cable 3 to gradually increase, thus prolonging the duration of the tension exerted by the weight 5 on the cable 3 and preventing the cable 3 from breaking. After the weight 5 stops rising, the tensioner 4 can be loosened, gradually reducing the tension of the conductor 28, that is, gradually reducing the tension of the compensating rope 7, until the weight of the weight 5 reaches equilibrium.

[0047] The above embodiments are described in detail and specifically, illustrating preferred embodiments of the present utility model. They are only used to illustrate the technical ideas and features of the present utility model, with the aim of enabling those skilled in the art to understand the content of the present utility model and implement it accordingly. However, they are not limited to the present utility model, and the patent scope of the present utility model cannot be limited by this embodiment alone. That is, any equivalent changes or modifications made to the spirit disclosed in the present utility model, without departing from the structure of the present utility model, such as local improvements within the system and modifications or transformations between subsystems, are still within the patent scope of the present utility model.

Claims

1. A plummet anti-channeling aid for wire changing, characterized by, It includes a clamp (6) that is clamped on the weight (5) and two pulleys (2) set below the weight (5). The two pulleys (2) are symmetrically arranged on both sides of the axis of the weight (5). The distance between the two pulleys (2) is greater than the diameter of the weight (5). One side of the clamp (6) is provided with a cable (3) that is fixedly connected to it at one end. The other end of the cable (3) passes around the two pulleys (2) in sequence and is fixedly connected to the other side of the clamp (6), so that the cable (3) forms an isosceles trapezoid. The pulleys (2) are all rotatably connected to the lower support arm (1) below the weight (5).

2. The catline change catenary anti-chase assist device of claim 1, wherein, The lower support arm (1) is made of angle steel. The pulley (2) is provided with a base plate (14) with one end hanging on the top edge of the lower support arm (1). The pulley (2) is rotatably connected to the base plate (14). The other end of the base plate (14) is rotatably connected to a vertical pull rod (12). The lower edge of the lower support arm (1) is hung with a second hook (11). The lower end of the pull rod (12) and the second hook (11) are fitted through a gap. The lower end of the pull rod (12) is screwed with a wing nut (10) for pressing the second hook (11) to the bottom of the lower support arm (1).

3. The catline anti-channeling assist device for wire changing of a lead according to claim 1, characterized by, The clamp (6) is fastened to the upper weight (5). The clamp (6) includes a ring (18) covering the outer circle of the weight (5). The ring (18) has a notch. The ring (18) has lugs (21) fixedly connected to both sides of the notch. A bolt (22) is provided through the lug (21). A nut is screwed onto the end of the bolt (22). After tightening the nut, the ring (18) is fastened to the outer circle of the weight (5). Two first lifting rings (19) are fixedly connected to the ring (18). The two first lifting rings (19) are set at 180° intervals along the circumference of the ring (18). The two ends of the cable (3) are respectively tied to the two first lifting rings (19).

4. The catline change cathead anti-channeling assist device of claim 3, wherein, At least two stops (20) are evenly distributed on the top of the ring (18). One end of the stop (20) is fixedly connected to the ring (18), and the other end extends toward the center of the ring (18). The stop (20) rests against the top surface of the weight (5).

5. The catline change cathead anti-channeling assist device of claim 1, wherein, The cable (3) is also provided with a buffer component (17), which includes a sleeve (27) and a slide rod (25) elastically connected to the sleeve (27). The cable (3) is disconnected at the location of the buffer component (17), and the slide rod (25) and the sleeve (27) are respectively fixedly connected to the two ends of the cable (3) that are disconnected at the location of the buffer component (17).

6. The catline anti-channeling assist device for wire changes of claim 5, wherein, The sleeve (27) is sealed at one end and open at the other end. The slide rod (25) is slidably connected to the sealed end of the sleeve (27). The slide rod (25) is covered with several disc springs (26). The end of the slide rod (25) located inside the sleeve (27) is provided with a flange for axially limiting the disc springs (26). The sleeve (27) is screwed with an end cap (24) at the open end. The outer side of the end cap (24) and the outer end of the slide rod (25) are fixedly connected with second lifting rings (23). The two ends of the cable (3) that break at the location of the buffer component (17) are respectively tied to the two second lifting rings (23).

7. The anti-channeling assist device for wireline replacement of a conductor of claim 5, wherein, It also includes a tensioner (4) installed on the cable (3), and the tensioner (4) and the buffer component (17) are respectively installed on both sides of the weight (5).

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