Pulley support for cable turning in cable well

Abstract

The invention discloses a pulley support for cable turning in a cable well. The pulley support comprises a hollow column; the supporting column is arranged above the hollow column, and a pulley is rotationally connected to the supporting column; and the telescopic device is arranged in the hollow column, and the telescopic device is configured to adjust the length of the hollow column. The pulley support comprises the hollow column and the telescopic device capable of moving in the hollow column in a reciprocating mode, the length of the hollow column is effectively adjusted so that the pulley support can adapt to the side walls of the two ends in the cable well with different distances, and the use range of the pulley support is widened. The pulley support further comprises a supporting column, the supporting column is located above the hollow column, a pulley is rotationally connected to the supporting column, the cable passes through a groove in the pulley, and smooth turning of the cable is achieved under the action of a traction machine.

Description

Technical Field

[0001] This invention relates to the field of cable construction technology, and in particular to a pulley bracket for cable turning in cable wells. Background Technology

[0002] During cable construction, the bends in cable trenches and cable wells are challenging areas. Because cables experience significant stress when bending, they cannot bend directly and usually require the use of pulleys for support to assist in the cable's turn.

[0003] The common practice is to drill holes in the wall of the cable trench, fix it with expansion bolts, then fix the pulley with ropes, let the cable pass through the pulley, and achieve the bend under the traction of the traction machine;

[0004] However, the drilling process of traditional brackets is cumbersome during installation, requiring a lot of time and manpower, and it also causes some damage to the wall structure. At the same time, the use of ropes for soft cable guide makes it difficult to accurately adjust the angle and height of the pulleys when facing different cable drilling requirements. This can lead to deviations when the cable bends or friction between other parts, which can damage the cable sheath, reduce the cable's service life and safety, and increase later maintenance costs. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0006] In view of this, the present invention provides a pulley bracket for cable turning in a cable well, wherein the pulley bracket can avoid damage to the wall surface in the well, realize support for the walls at different distances, and expand the application range of the pulley bracket.

[0007] Specifically, the following technical solutions are included:

[0008] This invention provides a pulley bracket for cable bending in a cable well, the pulley bracket comprising:

[0009] Hollow column;

[0010] A support column is disposed above the hollow column, and a pulley is rotatably connected to the support column;

[0011] A telescopic device is disposed inside the hollow column, and the telescopic device is configured to adjust the length of the hollow column;

[0012] An adjusting device is fitted onto the hollow column and is movable along the length of the hollow column. The adjusting device is located between the hollow column and the supporting column.

[0013] Optionally, the adjusting device includes a rotating device located below the pulley, and the rotating device is configured to steer the pulley.

[0014] Optionally, the telescopic device includes:

[0015] A pair of horizontal columns are arranged opposite each other inside the hollow column;

[0016] A cylindrical body is disposed on the hollow column, and the cylindrical body penetrates the outer wall of the hollow column;

[0017] Card slots, multiple card slots are evenly arranged on the surface of the horizontal column;

[0018] A pull rod is disposed inside the cylinder and is capable of reciprocating within the cylinder. One end of the pull rod is provided with a locking block that matches the locking groove.

[0019] An elastic part is disposed inside the cylinder, one end of which is connected to the locking block, and the other end of which is connected to the end of the cylinder away from the hollow column.

[0020] Optionally, the telescopic device further includes:

[0021] An auxiliary part is provided at the end of the horizontal column, and the auxiliary part is located outside the hollow column;

[0022] The auxiliary unit includes:

[0023] A connecting plate is fixedly connected to the end of the crossbar;

[0024] A rubber pad is provided on the side of the connecting plate opposite to the crossbar.

[0025] Optionally, the connecting plate is detachably connected to the crossbar, the connecting plate is flat and configured for a flat wall surface; or the connecting plate is right-angled and configured for a right-angled wall surface; or the connecting plate is arc-shaped and configured for an arc-shaped wall surface.

[0026] The shape of the rubber pad matches the shape of the connecting plate.

[0027] Optionally, the hollow column has a groove on the side facing the pulley, and the adjusting device includes:

[0028] A ring is fitted over the hollow column;

[0029] A slider is disposed on the side of the ring facing the hollow column, and the slider is connected to the groove.

[0030] A pulley seat is located on the side of the ring sleeve opposite to the slider;

[0031] A fixing part is provided on the ring and the hollow column.

[0032] Optionally, the fixing part includes:

[0033] Threaded holes, a plurality of the threaded holes being evenly disposed on the hollow column;

[0034] Bolts are configured to connect the ring and the hollow column.

[0035] Optionally, the rotating device includes:

[0036] A slot is provided on the side of the pulley seat facing the ring sleeve;

[0037] A swivel ball is fixedly disposed on the side of the ring facing the pulley seat, and the swivel ball is configured to rotate within the slot.

[0038] Optionally, the pulley bracket further includes:

[0039] Support legs are provided on the side of the crossbar facing the ground;

[0040] The supporting leg includes:

[0041] The first supporting square tube is connected to the horizontal column;

[0042] An inner cylinder is disposed inside the first supporting square tube. The inner cylinder is configured to move within the first supporting square tube. A first supporting plate is provided at the end of the inner cylinder away from the cross column. The area of ​​the first supporting plate is larger than the area of ​​the first supporting square tube.

[0043] An auxiliary support cylinder is disposed on the first support square cylinder. The auxiliary support cylinder is arranged parallel to the horizontal column. A second support plate is provided at the end of the auxiliary support cylinder away from the first support square cylinder. The second support plate is elastically connected to the end of the auxiliary support cylinder near the first support square cylinder.

[0044] Optionally, the hollow column has a groove or a protrusion on the side facing the horizontal column, and the horizontal column has a protrusion or a groove on the side facing the hollow column. The groove matches the protrusion, and the groove and the protrusion are arranged along the length direction of the hollow column. The protrusion and the groove are arranged to avoid the slot.

[0045] The present invention provides a pulley bracket for cable turning in a cable well. The pulley bracket includes a hollow column and a telescopic device capable of reciprocating within the hollow column, effectively adjusting the length of the hollow column to accommodate the side walls at both ends of the cable well at different distances, thus increasing the applicability of the pulley bracket. The pulley bracket also includes a support column located above the hollow column, on which a pulley is rotatably connected. The cable passes through grooves on the pulley, achieving a smooth turn under the action of a traction machine.

[0046] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 This is a schematic diagram of the internal structure of a pulley bracket according to an embodiment of the present invention;

[0049] Figure 2 A perspective view of an embodiment of the present invention with the pulleys and support legs removed;

[0050] Figure 3 This is a schematic diagram illustrating the engagement of the horizontal bar, the locking block, and the locking slot according to an embodiment of the present invention;

[0051] Figure 4 This is a schematic diagram illustrating the fit between the ring, slider, and groove according to an embodiment of the present invention.

[0052] Figure 5 This is a schematic diagram of a support leg according to an embodiment of the present invention.

[0053] in, Figures 1 to 5 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0054] 1 Hollow column, 2 Support column, 3 Pulley, 4 Telescopic device, 41 Horizontal column, 42 Cylinder, 43 Tie rod, 44 Spring, 45 Locking block, 46 Locking groove, 47 Auxiliary part, 471 Connecting plate, 472 Rubber pad, 5 Adjusting device, 51 Ring sleeve, 52 Slider, 53 Slide groove, 54 Pulley seat, 55 Fixing part, 551 Threaded hole, 552 Bolt, 6 Rotating device, 61 Slot, 62 Universal ball, 7 Groove, 8 Support leg, 81 First support square cylinder, 82 Inner cylinder, 83 First support plate, 84 Auxiliary support cylinder, 85 Second support plate, 86 Compression spring. Detailed Implementation

[0055] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0056] Before providing a further detailed description of the embodiments of the present invention, the directional terms used in the embodiments of the present invention, such as "upper part", "lower part" and "side part", are not intended to limit the scope of protection of the present invention.

[0057] To make the technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0058] Traditional pulley brackets involve cumbersome drilling during installation, requiring significant time and manpower. Furthermore, the use of flexible rope guides makes it difficult to precisely adjust the pulley angle and height to meet varying cable perforation requirements, reducing cable lifespan and safety, and increasing subsequent maintenance costs. To address these issues, this application proposes a pulley bracket for cable bends within cable wells, as detailed below.

[0059] Figure 1 This is a schematic diagram of the internal structure of a pulley bracket according to an embodiment of the present invention; Figure 2 A perspective view of an embodiment of the present invention with the pulleys and support legs removed.

[0060] like Figure 1 and Figure 2 As shown, one embodiment of the present invention provides a pulley bracket for cable bending in a cable well, the pulley bracket comprising:

[0061] Hollow column 1;

[0062] Support column 2 is set above hollow column 1, and pulley 3 is rotatably connected to support column 2;

[0063] Telescopic device 4 is installed inside the hollow column 1 and is configured to adjust the length of the hollow column 1;

[0064] The adjusting device 5 is fitted onto the hollow column 1 and can move along the length of the hollow column 1. The adjusting device 5 is located between the hollow column 1 and the support column 2.

[0065] The pulley bracket includes a hollow column 1 and a telescopic device 4 that can reciprocate inside the hollow column 1, effectively adjusting the length of the hollow column 1 to accommodate the side walls at both ends of the cable well at different distances, thus increasing the applicability of the pulley bracket. The pulley bracket also includes a support column 2 located above the hollow column 1, with a pulley 3 rotatably connected to it. The cable passes through the groove on the pulley 3, achieving a smooth turn under the action of a traction machine.

[0066] It should be noted that by setting up the telescopic device 4, there is no need to drill holes in the cable trench wall, which reduces damage to the wall structure, significantly shortens the installation time, improves construction efficiency, and solves the problem of drilling operations in the traditional bracket installation process. Drilling operations are cumbersome, require a lot of time and manpower, and cause some damage to the wall. The telescopic device 4 can effectively solve these problems and improve installation efficiency.

[0067] Furthermore, the pulley bracket includes a hollow column 1, with a support column 2 positioned above the hollow column 1. A pulley 3 is rotatably connected to the inner wall of the support column 2 via a bearing. The pulley bracket also includes a telescopic device 4 and an adjusting device 5. The telescopic device 4 is located inside the hollow column 1, and the adjusting device 5 is located outside the hollow column 1. The entire pulley bracket can be quickly installed using the telescopic device 4, and the position of the pulley 3 can be adjusted using the adjusting device 5, thus better adapting to the laying requirements of different cables.

[0068] It should be noted that the position of the pulley 3 can be quickly adjusted by the adjustment device 5. The pulley 3 can be installed at any position on the pulley bracket to adapt to different cable laying requirements. This solves the problem of difficulty in accurately adjusting the angle and height of the pulley when using a rope-guided cable method to meet different cable penetration requirements, which can easily lead to deviations when the cable turns. The height of the pulley 3 is adjusted by the position of the telescopic device 4 engaging with the wall. By adjusting the position of the adjustment device 5 on the hollow column 1, the pulley can be positioned at different locations on the hollow column 1, thereby adjusting the cable insertion position and improving the applicability of the pulley bracket.

[0069] like Figure 1 As shown, the shaft of pulley 3 is perpendicular to the shaft of telescopic device 4, and the plane formed by the shaft of pulley 3 and the shaft of telescopic device 4 is perpendicular to the horizontal ground.

[0070] In one feasible implementation, the adjusting device 5 is provided with a rotating device 6, which is located below the pulley 3 and is configured to rotate the pulley 3.

[0071] The rotating device 6 effectively reduces friction between the cable and the pulley 3, prevents damage to the cable's outer sheath, improves the cable's service life and safety, reduces maintenance costs, and enhances economic efficiency.

[0072] In other words, when the cable passes between the pulley 3 and the adjusting device 5, the rotating device 6 can cause the pulley 3 to deflect at a certain angle under the action of external force when the traction component drives the cable to turn. This can reduce the friction between the cable and the pulley bracket, avoid external wear of the cable, and thus improve the service life and safety of the cable.

[0073] It is understood that this application uses two support columns 2, with the pulley 3 positioned between them. The pair of support columns 2 ensures the stability and reliability of the pulley 3. The pulley 3 is made of polyurethane, giving it good strength and wear resistance, extending its service life. It also has good tear resistance and anti-aging properties, reducing damage caused by material aging and further improving its service life. The telescopic device 4 allows for quick fixing of the pulley bracket to the cable well wall. The adjustment device 5 allows for flexible adjustment of the pulley 3's horizontal position to accommodate cables passing through at different angles. The rotation device 6 ensures the pulley 3 can freely rotate during cable traction, reducing friction.

[0074] Figure 3 This is a schematic diagram illustrating the engagement of the horizontal bar, the locking block, and the locking slot according to an embodiment of the present invention.

[0075] In one feasible implementation, such as Figure 3 As shown, the telescopic device 4 includes:

[0076] A pair of horizontal columns 41 are arranged opposite each other inside the hollow column 1;

[0077] The cylindrical body 42 is disposed on the hollow column 1, and the cylindrical body 42 penetrates the outer wall of the hollow column 1;

[0078] Card slots 46, multiple card slots 46 are evenly arranged on the surface of the horizontal column 41;

[0079] A pull rod 43 is installed inside the cylinder 42 and can reciprocate within the cylinder 42. One end of the pull rod 43 is provided with a locking block 45, which matches the locking slot 46.

[0080] The elastic part is provided inside the cylinder 42. One end of the elastic part is connected to the locking block 45, and the other end of the elastic part is connected to the end of the cylinder 42 away from the hollow column 1.

[0081] The telescopic device 4 includes a horizontal column 41, a cylindrical body 42, a pull rod 43, an elastic element (spring 44), a locking block 45, and a locking groove 46. There are two horizontal columns 41, which are respectively located at both ends of the hollow column 1. The cylindrical body 42 is fixedly connected to the inner wall of the hollow column 1, and at least part of the cylindrical body 42 is located outside the hollow column 1. The pull rod 43 passes through the hollow column 1 and is movably connected to the hollow column 1. The pull rod 43 is located inside the cylindrical body 42, and at least part of the pull rod 43 is located outside the cylindrical body 42. The locking groove 46 is opened on the surface of the horizontal column 41, and the locking block 45 is inserted into the locking groove 46. Therefore, the shape of the locking block 45 matches that of the locking groove 46. One end of the locking block 45 is fixedly connected to the end of the pull rod 43 facing the horizontal column 41. The elastic element is usually a spring 44. One end of the spring 44 is fixedly connected to the locking block 45, and the other end of the spring 44 is connected to the top wall of the cylindrical body 42. By pulling the lever 43, the spring 44 drives the locking block 45 to retract into the cylinder 42, away from the slot 46, thus moving the horizontal column 41. When the overall length of the pulley bracket meets the distance requirements of the two side walls, the lever 43 is released, and under the action of the spring 44, the locking block 45 is inserted into the slot 46, thus fixing the position of the horizontal column 41.

[0082] Specifically, during the installation of the pulley bracket, the workers move the horizontal columns 41 on both sides, causing them to move within the hollow column 1. The horizontal columns 41 move along with the slots 46, which in turn press against the locking blocks 45. This causes the locking blocks 45 to move the pull rods 43 upwards and compress the springs 44. When the ends of the horizontal columns 41 abut against the walls at both ends of the cable trench, the locking blocks 45 insert into the corresponding slots 46, and are secured by the spring force of the springs 44. When the pulley bracket is released from its overall fixation, the workers pull the pull rods 43 on both sides. The pull rods 43 move the locking blocks 45 into the cylinder 42, the springs 44 compress, the locking blocks 45 separate from the slots 46, and the horizontal columns 41 are pushed into the hollow column 1, thus allowing the pulley bracket to be removed entirely. This eliminates the need for drilling holes in the wall, reducing damage to the wall surface, shortening the installation time of the pulley bracket, and improving construction efficiency.

[0083] It should be noted that two sets of slots 46 can be set on each horizontal bar 41, which can improve the reliability and stability of fixing the horizontal bar 41.

[0084] In one feasible embodiment, the telescopic device 4 further includes:

[0085] An auxiliary part 47 is provided at the end of the horizontal column 1, and the auxiliary part 47 is located outside the hollow column 1;

[0086] The auxiliary part 47 is provided in two sets, which are located at the end of the horizontal column 41 away from the hollow column 1. That is, the auxiliary part 47 is located on the outside of the hollow column 1, and the auxiliary part 47 is fixedly connected to the end of the horizontal column 41.

[0087] It should be noted that when the card block 45 and the card slot 46 are matched and adapted to the distance between the two ends of the wall, if there is still a gap between the side of the auxiliary part 47 away from the horizontal column 41 and the wall, a shim can be inserted into the gap to fill it, so as to ensure the reliability and stability of the pulley bracket and the wall support. The shim can be made of a material with a high coefficient of friction.

[0088] In one feasible implementation, the auxiliary unit 47 includes:

[0089] The connecting plate 471 is fixedly connected to the end of the cross column 41;

[0090] Rubber pad 472 is provided on the side of the connecting plate 471 opposite to the cross post 41.

[0091] The auxiliary part 47 includes a connecting plate 471 and a rubber pad 472. The connecting plate 471 is fixedly connected to the end of the horizontal column 41; the rubber pad 472 is fixedly connected to the side of the connecting plate 471 opposite to the horizontal column 41. Through the cooperation of the connecting plate 471 and the rubber pad 472, the pulley bracket is pressed against the wall of the cable trench.

[0092] It should be noted that the horizontal column 41 drives the connecting plate 471 to move, and the connecting plate 471 drives the rubber pad 472 to move, thereby pressing against the wall. The connecting plate 471 increases the contact area between the horizontal column 41 and the wall, and the rubber pad 472 increases the friction between the connecting plate 471 and the wall, thus achieving the stability and reliability of the pulley bracket support.

[0093] The connecting plate 471 increases the contact area between the horizontal column 41 and the wall. On the one hand, it makes it easier for workers to pull out the horizontal column 41 or push it into the hollow column 1. On the other hand, it can also prevent the problem of the horizontal column 41 being completely inserted into the hollow column 1 and unable to be removed due to excessive force. In other words, it acts as a baffle to ensure that at least part of the horizontal column 41 is located on the outside of the hollow column 1.

[0094] In one possible implementation, the connecting plate 471 is detachably connected to the crossbar 41. The connecting plate 471 is flat and is configured for a flat wall surface; or the connecting plate 471 is right-angled and is configured for a right-angled wall surface; or the connecting plate 471 is arc-shaped and is configured for an arc-shaped wall surface.

[0095] The shape of the rubber pad 472 matches the shape of the connecting plate 471.

[0096] It should be noted that the detachable connection between the connecting plate 471 and the cross post 41 can be a bolt connection or a threaded connection. In the case of a threaded connection, a connecting post can be provided on the side of the connecting plate 471 facing the cross post 41 with an external thread, and the end of the cross post 41 facing the connecting plate 471 with an internal thread. The detachable connection between the connecting plate 471 and the cross post 41 is achieved through the cooperation of the internal and external threads.

[0097] Understandably, the connecting plate 471 and the rubber pad 472 are fixed together and do not need to be disassembled. They can be connected by adhesive or by multiple bolts. The connecting plate 471 and the rubber pad 472 can be made in various shapes to adapt to different cable well walls and facilitate replacement.

[0098] Figure 4 This is a schematic diagram illustrating the fit between the ring, slider, and groove according to an embodiment of the present invention.

[0099] In one feasible implementation, such as Figure 4 As shown, the hollow column 1 has a groove 53 on the side facing the pulley 3, and the adjusting device 5 includes:

[0100] Ring 51 is fitted over the hollow column 1;

[0101] The slider 52 is located on the side of the ring 51 facing the hollow column 1, and the slider 52 is connected to the slide groove 53.

[0102] The pulley seat 54 is located on the side of the ring 51 opposite to the slider 52;

[0103] The fixing part 55 is provided on the ring 51 and the hollow column 1.

[0104] The adjusting device 5 includes a ring 51, a slider 52, a groove 53, a pulley seat 54, and a fixing part 55. The ring 51 is fitted onto the hollow column 1. The groove 53 is formed on the outer wall of the hollow column 1. The slider 52 is fixedly connected to the inner wall of the ring 51 and can reciprocate within the groove 53. The pulley seat 54 is positioned above the ring 51, and the fixing part 55 is positioned on the hollow column 1 and the ring 51, driving the ring 51 to move within the groove 53. This, in turn, drives the pulley 3 to move along the length of the hollow column 1 via the adjusting device 5.

[0105] It should be noted that when the position of pulley 3 needs to be adjusted, the operator moves the ring 51, which drives the slider 52 to move in the groove 53, thereby driving the pulley seat 54 and pulley 3 to move in the length direction of the hollow column 1 in sequence, so as to adjust the position of pulley 3. The pulley 3 can be installed at any position on the pulley bracket to adapt to the laying requirements of different cables.

[0106] In one possible implementation, the fixing part 55 includes:

[0107] Threaded holes 551, multiple threaded holes 551 are evenly arranged on the hollow column 1;

[0108] Bolt 552 is configured on the connecting ring sleeve 51 and the hollow column 1.

[0109] The fixing part 55 includes threaded holes 551 on the hollow column 1 and the ring 51. The ring 51 has one threaded hole 551, and multiple threaded holes 551 are evenly arranged along the length of the hollow column 1. A bolt 552 passes through the threaded hole 551 on the ring 51 and any one of the threaded holes 551 on the hollow column 1, thereby adjusting the position of the pulley 3. After tightening the bolt 552, the adjusting device 5 is fixed, thereby fixing the pulley 3.

[0110] It should be noted that after the position of pulley 3 is adjusted, the operator rotates bolt 552, which rotates in the ring 51 and finally screws into the threaded hole 551 of the hollow column 1 to fix the ring 51. When the position of pulley 3 needs to be adjusted, the operator rotates bolt 552 in the opposite direction, so that bolt 552 moves out of the threaded hole 551, releasing the fixation between the ring 51 and the hollow column 1, thereby adjusting the position of pulley 3. When pulley 3 is adjusted to the required position, bolt 552 is tightened to fix the ring 51 and the pulley 3 on it.

[0111] In one feasible embodiment, the rotating device 6 includes:

[0112] Slot 61 is provided on the side of pulley seat 54 facing ring 51;

[0113] The omnidirectional ball 62 is fixedly disposed on the side of the ring 51 facing the pulley seat 54, and the omnidirectional ball 62 is configured to rotate within the slot 61.

[0114] The rotating device 61 includes a slot and a universal ball 62. The slot 61 is located on the side of the pulley seat 54 facing the ring 51. The universal ball 62 is fixedly connected to the side of the ring 51 facing the pulley seat 54 and is disposed in the slot 61. The shape of the slot 61 matches the shape of the universal ball 62, and the universal ball 62 can rotate in the slot 61 without coming out. The adjustmentability of the pulley 62 is improved by the cooperation of the slot 61 and the universal ball 62.

[0115] It should be noted that when the cable pulling direction changes, the pulley seat 54 rotates with the universal ball 62, and the universal ball 62 rotates in the slot 61, thereby automatically adjusting the angle of the pulley seat 54 to avoid the cable rubbing against the edge of the pulley 3. The pulley seat 54 can be adjusted within an angle range of ±15°.

[0116] Figure 5 This is a schematic diagram of a support leg according to an embodiment of the present invention.

[0117] In one feasible implementation, such as Figure 5 As shown, the pulley bracket also includes:

[0118] Support leg 8 is located on the side of the horizontal column 41 facing the ground;

[0119] Support leg 8 includes:

[0120] The first supporting square tube 81 is connected to the horizontal column 41;

[0121] The inner cylinder 82 is disposed inside the first supporting square cylinder 81. The inner cylinder 82 is configured to move within the first supporting square cylinder 81. The end of the inner cylinder 82 away from the horizontal column 41 is provided with a first supporting plate 83. The area of ​​the first supporting plate 83 is larger than the area of ​​the first supporting square cylinder 81.

[0122] An auxiliary support cylinder 84 is disposed on the first support square cylinder 81. The auxiliary support cylinder 84 is disposed parallel to the horizontal column 41. A second support plate 85 is provided at the end of the auxiliary support cylinder 84 away from the first support square cylinder 81. The second support plate 85 is elastically connected to the end of the auxiliary support cylinder 84 near the first support square cylinder 81.

[0123] The inner cylinder 82 can include multiple inner cylinders 82 nested together. The inner cylinders 82 are threadedly connected to the first supporting square cylinder 81, and the nested inner cylinders 82 are also threadedly connected to each other. By rotating the inner cylinder 82 within the first supporting square cylinder 81, the position can be adapted to pulley supports of different heights, achieving stable support for the pulley supports. Multiple inner cylinders 82 can also be added to ensure that the length of the supporting leg 8 is sufficient to support the ground inside the cable well. It is understood that the first supporting square cylinder 81 is square on the outside and cylindrical on the inside to facilitate threaded connections and also to facilitate the overall transportation of the supporting leg 8, preventing rolling. The area of ​​the first supporting plate 83 is larger than the area of ​​the first supporting square cylinder 81, which increases the contact area between the supporting leg 8 and the supporting ground, further improving the stability of the pulley support. It should be noted that the first supporting square cylinder 81 and the crossbar 41 are detachably connected, such as by bolts. This reduces the volume of the pulley support, facilitating its entry into the cable well, and also facilitates transportation and movement.

[0124] Furthermore, an auxiliary support cylinder 84 can be installed on the first support cylinder 81. The auxiliary support cylinder 84 is arranged parallel to the horizontal column 41. A compression spring 86 is installed inside the first auxiliary support cylinder 84. One end of the compression spring 86 is connected to the end of the auxiliary support cylinder 84 near the first support cylinder 81, and the other end of the compression spring 86 is connected to a second support plate 85. When the compression spring 86 is compressed, the second support plate 85 and the auxiliary support cylinder 84 are fixedly connected by bolts, i.e., in a non-working state. When the telescopic device 4 is supported on the wall of the cable well, the bolts connecting the second support plate 85 and the auxiliary support cylinder 84 are opened. Under the stored force of the compression spring 86, the second support plate 85 is elastically connected to the wall of the cable well, improving the stability of the pulley bracket support and preventing the power of the traction machine from taking away the pulley bracket and affecting the normal operation of the pulley support. After the work is completed, the second support plate 85 can press the compression spring 86 and retract it into the auxiliary support cylinder 84, and the second support plate 85 and the auxiliary support cylinder 84 can be fixedly connected again by bolts for easy handling. It is understandable that the outer wall of the auxiliary support cylinder 84 can be polygonal or circular, without restriction, as long as the inner part of the auxiliary support 84 is circular, which facilitates the smooth extension and contraction of the compression spring 86. The auxiliary support cylinder 84 and the first support square cylinder 81 can be fixedly connected or detachably connected. The detachable connection is a bolt connection, and the square shape of the outer part of the first support square cylinder 81 makes the bolt connection more reliable and stable.

[0125] When the second support plate 85 and the auxiliary support cylinder 84 are connected by bolts, the outer edge of the rubber pad 472 is flush with the second support plate 85 when the telescopic device 4 is fully retracted. When the compression spring 86 is fully released, the outer edge of the rubber pad 472 is flush with the second support plate 85 when the telescopic device 4 is fully extended. This ensures that the stroke of the compression spring 86 is adapted to the telescopic length of the pulley bracket's telescopic device 4.

[0126] It should be noted that the second support plate 85 and the compression spring 86 can be connected by bolts or by snap-fit. For example, the compression spring 86 can be snapped into the slot on the side of the second support plate 85 facing the first support square tube 81, and then the second support plate 85 can be replaced. The shape of the second support plate 85 matches the shape of the auxiliary part 47.

[0127] In one feasible implementation, the hollow column 1 is provided with a groove or a protrusion on the side facing the horizontal column 41, and the horizontal column 41 is provided with a protrusion or a groove on the side facing the hollow column 1. The groove and the protrusion match, and the groove and the protrusion are arranged along the length direction of the hollow column 1. The protrusion and the groove are arranged to avoid the slot.

[0128] A mating connection is provided between the hollow column 1 and the horizontal column 41, which makes the positioning of the slot 46 and the block 45 more accurate and reduces the difficulty for workers to move the horizontal column 41.

[0129] Understandably, two sets of grooves and protrusions can be set to cooperate, which can improve the reliability and stability of the horizontal column 41 moving in the hollow column 1 and reduce the labor intensity of the workers.

[0130] In one possible implementation, the surface of the pulley 3 is provided with grooves.

[0131] The groove is V-shaped, which reduces cable friction. During cable installation, the cable passes through the space formed by the groove of pulley 3 and pulley seat 54, and the cable makes a smooth turn under the action of the traction machine.

[0132] Specifically, during the overall installation of the pulley bracket, the workers move the horizontal columns 41 on both sides of the hollow column 1. The horizontal columns 41 move inside the hollow column 1, and the horizontal columns 41 drive the slots 46. The slots 46 squeeze the locking blocks 45, causing the locking blocks 45 to drive the pull rod 43 to move inside the cylinder 42, thereby compressing the spring 44. The horizontal columns 41 drive the connecting plate 471 to move, and the connecting plate 471 drives the rubber pad 472 to move, thus abutting against the walls on both sides of the cable trench. At this time, the locking blocks 45 are inserted into the corresponding slots 46, and the spring force of the spring 44 fixes the locking blocks 45. When the position of pulley 3 needs to be adjusted, the operator first rotates bolt 552 in the opposite direction to remove it from the threaded hole 551, thus releasing the fixing between the ring 51 and the hollow column 1. Then, the operator moves the ring 51, which drives the slider 52 to move. The slider 52 slides in the groove 53, and the ring 51 drives the pulley seat 54 to move. The pulley seat 54 then drives the pulley 3 to move. When the pulley 3 moves to the desired position, the operator rotates bolt 552, which screws into the threaded hole 551 on the ring 51 and the hollow column 1, thus fixing the ring 51 and the hollow column 1. At the same time, the telescopic length of the inner cylinder 82 of the support leg 8 is adjusted so that the first support plate 83 is supported on the ground inside the cable well. Then, the connecting bolt between the second support plate 85 and the auxiliary support cylinder 85 is loosened. Under the spring force of the internal compression spring 86, the second support plate 85 is supported on the wall of the cable well, ensuring the stability and reliability of the pulley bracket support. During cable installation, the cable passes around pulley 3 and is located in the V-shaped groove of pulley 3. Under the action of the traction machine, the cable makes a smooth turn. When the cable traction direction changes, the pulley seat 54 rotates with the universal ball 62. The universal ball 62 rotates in the slot 61, thereby adjusting the angle of the pulley seat 54, which is also adjusting the angle of pulley 3.

[0133] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "a plurality" refers to two or more unless otherwise expressly defined.

[0134] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only.

[0135] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pulley bracket for cable turning in a cable well, characterized in that, The pulley bracket includes: Hollow column; A support column is disposed above the hollow column, and a pulley is rotatably connected to the support column; A telescopic device is disposed inside the hollow column, and the telescopic device is configured to adjust the length of the hollow column; An adjusting device is fitted onto the hollow column and is movable along the length of the hollow column. The adjusting device is located between the hollow column and the supporting column.

2. The pulley bracket for cable turning in a cable well according to claim 1, characterized in that, The adjusting device includes a rotating device located below the pulley, which is configured to steer the pulley.

3. The pulley bracket for cable turning in a cable well according to claim 1, characterized in that, The telescopic device includes: A pair of horizontal columns are arranged opposite each other inside the hollow column; A cylindrical body is disposed on the hollow column, and the cylindrical body penetrates the outer wall of the hollow column; Card slots, multiple card slots are evenly arranged on the surface of the horizontal column; A pull rod is disposed inside the cylinder and is capable of reciprocating within the cylinder. One end of the pull rod is provided with a locking block that matches the locking groove. An elastic part is disposed inside the cylinder, one end of which is connected to the locking block, and the other end of which is connected to the end of the cylinder away from the hollow column.

4. The pulley bracket for cable turning in a cable well according to claim 3, characterized in that, The telescopic device further includes: An auxiliary part is provided at the end of the horizontal column, and the auxiliary part is located outside the hollow column; The auxiliary unit includes: A connecting plate is fixedly connected to the end of the crossbar; A rubber pad is provided on the side of the connecting plate opposite to the crossbar.

5. The pulley bracket for cable turning in a cable well according to claim 4, characterized in that, The connecting plate is detachably connected to the crossbar. The connecting plate is flat and is configured for a flat wall surface; or the connecting plate is right-angled and is configured for a right-angled wall surface; or the connecting plate is arc-shaped and is configured for an arc-shaped wall surface. The shape of the rubber pad matches the shape of the connecting plate.

6. The pulley bracket for cable turning in a cable well according to claim 1, characterized in that, The hollow column has a groove on the side facing the pulley, and the adjusting device includes: A ring is fitted over the hollow column; A slider is disposed on the side of the ring facing the hollow column, and the slider is connected to the groove. A pulley seat is located on the side of the ring sleeve opposite to the slider; A fixing part is provided on the ring and the hollow column.

7. The pulley bracket for cable turning in a cable well according to claim 6, characterized in that, The fixing part includes: Threaded holes, a plurality of the threaded holes being evenly disposed on the hollow column; Bolts are configured to connect the ring and the hollow column.

8. The pulley bracket for cable turning in a cable well according to claim 6, characterized in that, The rotating device includes: A slot is provided on the side of the pulley seat facing the ring sleeve; A swivel ball is fixedly disposed on the side of the ring facing the pulley seat, and the swivel ball is configured to rotate within the slot.

9. The pulley bracket for cable turning in a cable well according to any one of claims 3 to 5, characterized in that, The pulley bracket also includes: Support legs are provided on the side of the crossbar facing the ground; The supporting leg includes: The first supporting square tube is connected to the horizontal column; An inner cylinder is disposed inside the first supporting square tube. The inner cylinder is configured to move within the first supporting square tube. A first supporting plate is provided at the end of the inner cylinder away from the cross column. The area of ​​the first supporting plate is larger than the area of ​​the first supporting square tube. An auxiliary support cylinder is disposed on the first support square cylinder. The auxiliary support cylinder is arranged parallel to the horizontal column. A second support plate is provided at the end of the auxiliary support cylinder away from the first support square cylinder. The second support plate is elastically connected to the end of the auxiliary support cylinder near the first support square cylinder.

10. The pulley bracket for cable turning in a cable well according to any one of claims 4 to 8, characterized in that, The hollow column has a groove or protrusion on the side facing the horizontal column, and the horizontal column has a protrusion or groove on the side facing the hollow column. The groove matches the protrusion, and the groove and the protrusion are arranged along the length direction of the hollow column. The protrusion and the groove are arranged to avoid the slot.

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