A pulley clamp for laying high-voltage cables through pipes

Abstract

The utility model relates to the technical field of cable laying, specifically a pulley clamp for high-voltage cable pipe laying, comprising: two hoop plates, wherein the surface of one of the hoop plates is plugged with a bolt plugged with the other hoop plate, the surface of the bolt is threadedly connected with a nut in contact with the other hoop plate, and the surface of the hoop plate is fixedly connected with evenly distributed pulleys; a protective pad with an upper and lower split design is adopted, and the staff only needs to lock the two hoop plates, and the protective pad can be attached to the surface of the cable by itself. Compared with the existing method of using a complete gasket as a seal, this does not require the staff to put the protective pad on the surface of the cable in advance, making the loading and unloading work of the staff easier, thereby reducing the labor intensity of the staff.

Description

Technical Field

[0001] The utility model relates to the technical field of cable laying, in particular to a pulley clamp for high-voltage cable pipe laying. Background Art

[0002] High-voltage cable pipe laying is a cable installation method, which involves laying high-voltage cables through prefabricated pipes (such as concrete pipes). At present, pulley clamps are often used to reduce friction during the pipe laying process.

[0003] At present, a Chinese patent discloses an outdoor buried pipeline transportation system (publication number CN208041308U). The outdoor buried pipeline transportation system of the utility model is provided with a pipe sleeve outside the pipeline and a pipe threading auxiliary device is installed on the outer wall of the pipeline, so that the pipe threading auxiliary device greatly reduces the friction between the pipeline and the pipe sleeve during the pipe threading process, avoids damage to the pipeline, and ensures safety.

[0004] Since the above-mentioned device uses a complete gasket as a protective part between the cable and the clamp, before the staff needs to perform the pipe threading operation, the staff needs to put enough gaskets on the end of the cable in advance. Otherwise, when the end of the cable enters the pipeline, the gasket will be difficult to put on the surface of the cable. However, this requires the staff to accurately calculate the number of gaskets to be used, otherwise the cable may still have the probability of friction with the pipeline, resulting in a heavy burden on the staff.

[0005] Therefore, a pulley clamp for high-voltage cable pipe laying is proposed to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a pulley clamp for high-voltage cable pipe laying in order to solve the above-mentioned problem, thereby improving the problem that the existing pulley clamp for high-voltage cable pipe laying is cumbersome to use and has low practicality.

[0007] The utility model achieves the above-mentioned purpose through the following technical scheme: a pulley clamp for high-voltage cable pipe laying, comprising: two hoop plates, wherein the surface of one of the hoop plates is plugged with a bolt plugged with the other hoop plate, the surface of the bolt is threadedly connected with a nut in contact with the other hoop plate, and the surface of the hoop plate is fixedly connected with evenly distributed pulleys; two protective devices, the two protective devices are respectively installed at opposite ends of the two hoop plates, the opposite ends of the bolt and the nut are respectively in contact with adjacent protective devices, and both ends of the protective device are fixedly connected to the adjacent hoop plates.

[0008] Preferably, the protective device includes a protective pad, which is fixedly connected to the end of the hoop plate away from the pulley, and the cross-sectional shape of the protective pad is an arc. The angle formed between the two ends of the protective pad and the center point of the circle is less than one hundred and eighty degrees. For the protective pad with an upper and lower split design, the staff only needs to lock the two hoops, and the protective pad can fit on the surface of the cable by itself. Compared with the existing method of using a complete gasket as a seal, this does not require the staff to put the protective pad on the surface of the cable in advance, making the loading and unloading work of the staff easier, thereby reducing the labor intensity of the staff.

[0009] Preferably, the protection pad is a rubber material component, and the corners of the protection pad are rounded, which can make the protection pad fit the cable more closely, so as to improve the protection effect of the cable.

[0010] Preferably, a spherical airbag is embedded and installed at one end of the protection pad away from the hoop plate, and the spherical airbag is in an expanded state at this time, which can increase the pressure between the protection pad and the cable to improve the fit between the protection pad and the cable.

[0011] Preferably, the number of the spherical airbags is not less than six, and the spherical airbags are distributed in a ring shape around the center point of the protective pad at the end of the protective pad away from the hoop plate; two adjacent spherical airbags are connected, which can make the protective pad fit the cable more evenly and further improve the fit between the protective pad and the cable.

[0012] Preferably, two air ducts are fixedly connected to the surface of the protection pad, one end of the air duct passes through the protection pad and is fixedly connected and communicated with the adjacent spherical airbag, the other end of the air duct is fixedly connected and communicated with an annular airbag fixedly connected to the hoop plate, the upper annular airbag is arranged between the bolt and the adjacent hoop plate, and the lower annular airbag is arranged between the nut and the adjacent hoop plate. During the compression of the spherical airbag, the annular airbag can also expand accordingly, which can not only reduce the probability of the spherical airbag being compressed, but also increase the tightness of the threaded connection between the bolt or nut, reduce the probability of the bolt or nut loosening, make the pulley clamp more stable to use as a whole, and further improve the practicability of the pulley clamp.

[0013] Preferably, a fixing ring fixedly connected to the adjacent hoop plate is provided on the inner side of the annular airbag, the upper fixing ring is provided between the bolt and the adjacent hoop plate, and the lower fixing ring is provided between the nut and the adjacent hoop plate. This can not only prevent the annular airbag from expanding in the direction of the bolt surface thread to reduce the probability of the bolt thread damaging the annular airbag, but also the fixing ring can reserve sufficient storage space for the annular airbag, reducing the probability of the annular airbag being damaged due to excessive compression.

[0014] The beneficial effects of the utility model are:

[0015] 1. With the protection pad with upper and lower split design, the staff only needs to lock the two hoops, and the protection pad can fit on the surface of the cable by itself. Compared with the existing method of using a complete gasket as a seal, this does not require the staff to put the protection pad on the surface of the cable in advance, making the loading and unloading work of the staff easier, thereby reducing the labor intensity of the staff;

[0016] 2. The spherical airbag can increase the pressure between the protective pad and the cable to improve the fit between the protective pad and the cable. At the same time, when the spherical airbag is compressed, the annular airbag can also expand accordingly, which can not only reduce the probability of the spherical airbag being compressed, but also increase the tightness of the threaded connection between the bolts or nuts, reducing the probability of the bolts or nuts loosening, making the overall use of the pulley clamp more stable, and further improving the practicability of the pulley clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the protection device in the utility model;

[0020] Figure 4 It is a cross-sectional schematic diagram of the protection device in the utility model.

[0021] In the figure: 1, hoop; 2, bolt; 3, nut; 4, pulley; 5, protective device; 51, protection pad; 52, spherical airbag; 53, air guide tube; 54, annular airbag; 55, fixing ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] When implementing: Figure 1-4As shown, a pulley clamp for high-voltage cable pipe laying includes: two hoops 1, wherein the surface of one of the hoops 1 is plugged with a bolt 2 plugged with the other hoops 1, the surface of the bolt 2 is threadedly connected with a nut 3 in contact with the other hoops 1, and the surface of the hoops 1 is fixedly connected with evenly distributed pulleys 4; two protective devices 5, the two protective devices 5 are respectively installed at the opposite ends of the two hoops 1, the opposite ends of the bolts 2 and the nuts 3 are respectively in contact with the adjacent protective devices 5, and both ends of the protective devices 5 are fixedly connected to the adjacent hoops 1.

[0024] like Figure 2 , Figure 3 and Figure 4 As shown, the protective device 5 includes a protective pad 51, which is fixedly connected to the end of the hoop plate 1 away from the pulley 4. The cross-sectional shape of the protective pad 51 is an arc shape, and the angle formed between the two ends of the protective pad 51 and the center point of the circle is less than one hundred and eighty degrees; the protective pad 51 is a rubber material component, and the corners of the protective pad 51 are rounded.

[0025] like Figure 2 , Figure 3 and Figure 4 As shown, a spherical airbag 52 is embedded and installed at one end of the protection pad 51 away from the hoop plate 1, and the spherical airbag 52 is in an expanded state at this time; the number of the spherical airbags 52 is not less than six, and the spherical airbags 52 are distributed in a ring shape around the center point of the protection pad 51 at the end of the protection pad 51 away from the hoop plate 1; two adjacent spherical airbags 52 are connected; two air guide tubes 53 are fixedly connected to the surface of the protection pad 51, and one end of the air guide tube 53 passes through the protection pad 51 and is fixedly connected to the adjacent spherical airbag 52 The other end of the air guide tube 53 is fixedly connected and communicated with an annular air bag 54 fixedly connected to the hoop plate 1, the upper annular air bag 54 is arranged between the bolt 2 and the adjacent hoop plate 1, and the lower annular air bag 54 is arranged between the nut 3 and the adjacent hoop plate 1; the inner side of the annular air bag 54 is arranged with a fixing ring 55 fixedly connected to the adjacent hoop plate 1, the upper fixing ring 55 is arranged between the bolt 2 and the adjacent hoop plate 1, and the lower fixing ring 55 is arranged between the nut 3 and the adjacent hoop plate 1;

[0026] When the cable is fitted with the spherical airbag 52, the hoop plate 1 cooperates with the cable to squeeze the spherical airbag 52 as it approaches the cable. At this time, the gas inside the spherical airbag 52 is compressed. At this time, the spherical airbag 52 reversely squeezes the cable, making the protection pad 51 fit more closely with the cable, and part of the squeezed gas is introduced into the annular airbag 54 along the air guide tube 53. At this time, the annular airbag 54 expands accordingly, and the annular airbag 54 squeezes the bolt 2 or nut 3 in contact with it in the direction away from the hoop plate 1, which can increase the tightness of the threaded connection between the bolt 2 or the nut 3, reduce the probability of the bolt 2 or the nut 3 loosening, and make the pulley clamp more stable as a whole.

[0027] When the utility model is in use, when the staff needs to install the pulley clamp on the surface of the cable, the staff first unscrews the two nuts 3, at which time the two hoop plates 1 lose their obstruction, and then the hoop plates 1 can be respectively wrapped around the two sides of the cable, and then the bolts 2 are sequentially penetrated through the two hoop plates 1, and then the nut 3 is screwed to the surface of the bolt 2, and then the nut 3 and the bolt 2 are rotated toward each other, at this time the nut 3 spirals forward along the bolt 2, the bolt 2 and the nut 3 respectively drive the hoop plates 1 in contact with them to approach each other, the hoop plate 1 drives the protection pad 51 to approach the cable, the protection pad 51 contacts the cable before the hoop plate 1, and is squeezed by the hoop plate 1 on the surface of the cable until the nut 3 is rotated into place, at this time the slide rail clamp is installed, and the staff can put the cable with the pulley clamp into the pipeline, at this time the pulley 4 replaces the cable to contact the pipeline, so as to achieve the purpose of reducing the friction between the cable and the pipeline;

[0028] During the above operation, the staff only needs to lock the two hoops 1. At this time, the protection pad 51 can stick to the surface of the cable by itself to prevent the hoop 1 from being scratched. This does not require the staff to put the protection pad 51 on the surface of the cable in advance, making the loading and unloading work of the staff easier.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A pulley clamp for laying high-voltage cables through pipes, characterized in that: include: There are two hoop plates (1), wherein a bolt (2) inserted into the surface of one hoop plate (1) is inserted, a nut (3) in contact with the other hoop plate (1) is threadedly connected to the surface of the bolt (2), and pulleys (4) evenly distributed are fixedly connected to the surface of the hoop plate (1); There are two protective devices (5), the two protective devices (5) are respectively installed at opposite ends of the two hoop plates (1), the opposite ends of the bolts (2) and nuts (3) are respectively in contact with the adjacent protective devices (5), and both ends of the protective devices (5) are fixedly connected to the adjacent hoop plates (1); The protective device (5) comprises a protective pad (51), wherein the protective pad (51) is fixedly connected to one end of the hoop plate (1) away from the pulley (4), the cross-sectional shape of the protective pad (51) is an arc, and the angle formed between the two ends of the protective pad (51) and the center point of the circle is less than one hundred and eighty degrees.

2. A pulley clamp for high-voltage cable pipe laying according to claim 1, characterized in that: The protection pad (51) is a rubber material component, and the corners of the protection pad (51) are rounded.

3. The pulley clamp for high-voltage cable pipe laying according to claim 1 is characterized in that: A spherical airbag (52) is embedded and installed at one end of the protection pad (51) away from the hoop plate (1), and the spherical airbag (52) is in an expanded state at this time.

4. The pulley clamp for high-voltage cable pipe laying according to claim 3 is characterized in that: The number of the spherical airbags (52) is not less than six, and the spherical airbags (52) are distributed in a ring shape around the center point of the protection pad (51) at one end of the protection pad (51) away from the hoop plate (1).

5. The pulley clamp for high-voltage cable pipe laying according to claim 4 is characterized in that: Two adjacent spherical air bags (52) are connected.

6. The pulley clamp for high-voltage cable pipe laying according to claim 4, characterized in that: Two air guide tubes (53) are fixedly connected to the surface of the protection pad (51), one end of the air guide tube (53) passes through the protection pad (51) and is fixedly connected and communicated with the adjacent spherical airbag (52), the other end of the air guide tube (53) is fixedly connected and communicated with an annular airbag (54) fixedly connected to the hoop plate (1), the upper annular airbag (54) is arranged between the bolt (2) and the adjacent hoop plate (1), and the lower annular airbag (54) is arranged between the nut (3) and the adjacent hoop plate (1).

7. The pulley clamp for high-voltage cable pipe laying according to claim 6, characterized in that: A fixing ring (55) fixedly connected to the adjacent hoop plate (1) is arranged on the inner side of the annular airbag (54); the upper fixing ring (55) is arranged between the bolt (2) and the adjacent hoop plate (1); and the lower fixing ring (55) is arranged between the nut (3) and the adjacent hoop plate (1).

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