Overhead line tensioning device

Abstract

The utility model discloses an overhead line tensioning device, which comprises a line connecting device, a screw rod, a fixed seat, an adjusting nut and a locking device, the fixed seat is provided with an open hole, one end of the screw rod passes through the open hole and is in threaded connection with the adjusting nut, the other end of the screw rod is connected with the line connecting device, and the line connecting device is provided with a through hole for a line to pass through; and the locking device is in contact fit with the adjusting nut and is used for limiting the adjusting nut from moving on the screw rod. By arranging the screw rod and the adjusting nut, the tensile force can be randomly adjusted, so that the optimal tensioning effect is ensured, the use is flexible, and the overhead line is prevented from drooping; and by arranging the locking device, the locking effect on the adjusting nut can be achieved, the adjusting nut is prevented from moving on the screw rod, and the device can continuously guarantee the optimal tensioning effect on the steel wire rope.

Description

Technical Field

[0001] The utility model relates to the technical field of cable laying, in particular to an overhead line tensioning device. Background Art

[0002] When the electrical lines are overhead, a steel wire rope is generally connected to the cable, and then the steel wire rope is tightened by a tensioning device. One end of the tensioning device is usually fixed in an appropriate position, and the other end is connected to the steel wire rope to tighten the line, thereby preventing the line from sagging or loosening.

[0003] The existing tensioning device is not convenient for adjusting the length at will, the tension of the wire rope cannot be accurately adjusted, and the use is not flexible enough, so it is necessary to improve it. Utility Model Content

[0004] Based on this, it is necessary to provide an overhead line tensioning device to address the above technical problems.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an overhead line tensioning device, including a line connecting device, a screw, a fixing seat, an adjusting nut and a locking device, wherein the fixing seat is provided with an opening, one end of the screw passes through the opening and is threadedly connected to the adjusting nut, and the other end of the screw is connected to the line connecting device, and the line connecting device has a through hole for the line to pass through; the locking device is in contact with and cooperates with the adjusting nut to limit the movement of the adjusting nut on the screw.

[0006] Optionally, the line connecting device is a circular ring, and the line connecting device is fixedly connected to the screw rod.

[0007] Optionally, the line connection device includes a U-shaped plate and a slider, the slider is fixedly connected to the screw rod, the slider is detachably arranged on the inner side of the U-shaped plate through a fastener, and the perforation is surrounded by the slider and the U-shaped plate.

[0008] Optionally, an end surface of the sliding block facing the inner side of the U-shaped plate is a curved surface adapted to the U-shaped plate.

[0009] Optionally, a first mounting hole is formed on the U-shaped plate, and a second mounting hole corresponding to the first mounting hole is formed on the sliding block.

[0010] Optionally, the locking device is a nut threadedly mounted on the screw rod.

[0011] Optionally, the locking device includes a guide sleeve, a pull rod, a limit plate, and a compression spring. The guide sleeve is fixedly mounted on a fixed seat. The pull rod is slidably connected to the guide sleeve. The limit plate is fixedly connected to the pull rod. One end of the compression spring is connected to the limit plate, and the other end is connected to the guide sleeve. The limit plate is provided with a bayonet for engaging with an adjusting nut to limit the rotation of the adjusting nut.

[0012] The beneficial effects of this technical solution are as follows: by setting a screw rod and an adjusting nut, the pulling force can be adjusted at will, thereby ensuring the best tensioning effect, being flexible to use, and preventing the overhead line from sagging; by setting a locking device, the adjusting nut can be prevented from loosening, preventing the adjusting nut from moving on the screw rod, so that the device can continuously ensure the best tensioning effect for the wire rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the overhead line tensioning device of Example 1;

[0014] Figure 2 It is a front view of the overhead line tensioning device of Example 1;

[0015] Figure 3 It is a structural schematic diagram of an overhead line tensioning device according to Embodiment 2;

[0016] Figure 4 It is a front view of the overhead line tensioning device of Example 2;

[0017] Figure 5 It is a structural schematic diagram of an overhead line tensioning device of Example 3;

[0018] Figure 6 It is a front view of the overhead line tensioning device of Example 3;

[0019] Figure 7 for Figure 6 Sectional view along line AA;

[0020] Figure 8 It is a structural schematic diagram of an overhead line tensioning device according to Embodiment 4;

[0021] Fig. 9 It is a front view of the overhead line tensioning device of Example 4;

[0022] In the figure, 1. line connection device; 11. perforation; 12. U-shaped plate; 121. first mounting hole; 13. slider; 131. second mounting hole; 14. fastener; 2. screw; 3. fixing seat; 31. opening; 4. adjusting nut; 5. locking device; 51. guide sleeve; 52. pull rod; 53. limit plate; 531. bayonet; 54. compression spring. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below. Example 1

[0024] See also Figure 1 and Figure 2 The embodiment of the present application provides an overhead line tensioning device, including a line connection device 1, a screw rod 2, a fixing seat 3, an adjusting nut 4 and a locking device 5. The fixing seat 3 is provided with an opening 31. One end of the screw rod 2 passes through the opening 31 and is threadedly connected to the adjusting nut 4. The other end of the screw rod 2 is connected to the line connection device 1. The line connection device 1 has a through hole 11 for the line to pass through. The line connection device 1 is a circular ring, and the line connection device 1 is fixedly connected to the screw rod 2; the locking device 5 is in contact with the adjusting nut 4 to limit the movement of the adjusting nut 4 on the screw rod 2. The locking device 5 is a nut threadedly mounted on the screw rod 2, and adopts a double nut friction anti-loosening method. When the adjusting nut 4 and the locking device 5 are tightened against each other, the screw rod 2 in the screwing section is subjected to tension, and the adjusting nut 4 and the locking device 5 are subjected to pressure, forming a threaded connection pair that is longitudinally compressed, so that there is always longitudinal pressure between the adjusting nut 4 and the locking device 5, thereby achieving the purpose of preventing loosening.

[0025] When the electrical line cables are overhead or the equipment cables are randomly moving, the installation is simple and quick. The distance between the locking device 5 and the fixing seat 3 can be adjusted arbitrarily according to the actual situation on site. By passing the steel wire rope through the through hole 11, welding the fixing seat 3 in the appropriate position, and tightening the adjusting nut 4, the steel wire rope can be tightened, thereby ensuring the best tightening effect, which has a better corrective effect on the sagging of the overhead line and the random moving equipment. Example 2

[0026] See also Figure 3 and Figure 4 The embodiment of the present application provides an overhead line tensioning device. The embodiment of the present application is roughly the same as Example 1, except that the line connection device 1 in the embodiment of the present application is not a circular ring, but includes a U-shaped plate 12 and a slider 13. The slider 13 is fixedly connected to the screw rod 2. The slider 13 is detachably arranged on the inner side of the U-shaped plate 12 through a fastener 14. In this embodiment, the fastener 14 is a pin assembly, and can also be a bolt assembly. The through hole 11 is surrounded by the slider 13 and the U-shaped plate 12.

[0027] One end surface of the slider 13 facing the inner side of the U-shaped plate 12 is an arc surface adapted to the U-shaped plate 12. The U-shaped plate 12 is provided with a first mounting hole 121, and the slider 13 is provided with a second mounting hole 131 corresponding to the first mounting hole 121. A pin assembly or a bolt assembly passes through the first mounting hole 121 and the second mounting hole 131 to connect the slider 13 to the U-shaped plate 12.

[0028] Compared with the circular ring design of Example 1, the line connection device 1 of this embodiment is more convenient to connect the wire rope; because when the circular ring of Example 1 is used to connect the wire rope, one end of the wire rope needs to pass through the through hole 11, while in this embodiment, it is only necessary to remove the pin assembly to separate the U-shaped plate 12 and the slider 13, and then the wire rope can directly enter the inner side of the U-shaped plate 12, and there is no need to find one end of the wire rope and then pass one end of the wire rope through the through hole 11, which saves time and effort. Finally, the slider 13 is inserted into the U-shaped plate 12, and the pin assembly is installed to conveniently assemble the line connection device 1, which greatly improves the tensioning efficiency of the super-long line wire rope, especially the efficiency of the later wire rope replacement operation. Example 3

[0029] See also Figures 5 to 7 The embodiment of the present application provides an overhead line tensioning device, which is substantially the same as the embodiment 1, except that the locking device 5 of the embodiment of the present application is not a nut, but includes a guide sleeve 51, a pull rod 52, a limit plate 53, and a compression spring 54. The guide sleeve 51 is fixedly mounted on the fixing seat 3, the pull rod 52 is slidably plugged with the guide sleeve 51, the limit plate 53 is fixedly connected with the pull rod 52, one end of the compression spring 54 is connected with the limit plate 53, and the other end is connected with the guide sleeve 51. The limit plate 53 is provided with a bayonet 531 for engaging with the adjusting nut 4 to limit the rotation of the adjusting nut 4. The adjusting nut 4 is preferably a hexagonal nut, and a round nut with a smooth outer wall cannot be used.

[0030] The locking device 5 of this embodiment has a better anti-loosening effect than the design of the nut adopted in the embodiment 1; the locking device 5 of the embodiment 1 adopts a nut, which is generally used in low-speed heavy load or stable load occasions; when the load is large, the locking device 5 of this embodiment is more suitable for use; the compression spring 54 provides elastic force to the limit plate 53, so that the limit plate 53 abuts against the fixing seat 3, and the bayonet 531 is engaged with the adjusting nut 4, thereby limiting the rotation of the adjusting nut 4. The adjusting nut 4 cannot rotate and naturally cannot move relative to the screw rod 2, thereby avoiding the tensioning length of the tensioning device to be lengthened and the tensioning force to be reduced.

[0031] When it is necessary to rotate the adjusting nut 4 to adjust the tension, first pull the pull rod 52, and the pull rod 52 drives the limit plate 53 to move, so that the bayonet 531 is separated from the adjusting nut 4, and then the adjusting nut 4 can be rotated. After the adjusting nut 4 is rotated, it needs to be rotated to a suitable angle to facilitate alignment with the bayonet 531, so that after loosening the pull rod 52, the bayonet 531 and the adjusting nut 4 can be smoothly engaged again. Example 4

[0032] See also Figure 8 and Fig. 9 The embodiment of the present application provides an overhead line tensioning device, which is substantially the same as the embodiment 2, except that the locking device 5 of the embodiment of the present application is not a nut, but includes a guide sleeve 51, a pull rod 52, a limit plate 53, and a compression spring 54. The guide sleeve 51 is fixedly mounted on the fixing seat 3, the pull rod 52 is slidably plugged with the guide sleeve 51, the limit plate 53 is fixedly connected with the pull rod 52, one end of the compression spring 54 is connected with the limit plate 53, and the other end is connected with the guide sleeve 51. The limit plate 53 is provided with a bayonet 531 for engaging with the adjusting nut 4 to limit the rotation of the adjusting nut 4. The principle of the embodiment of the present application can refer to the above embodiment, and will not be repeated.

[0033] It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model, and these are all within the scope of protection of the utility model. Therefore, the scope of protection of the utility model patent shall be based on the attached claims.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. An overhead line tensioning device, characterized in that: The invention comprises a line connection device (1), a screw rod (2), a fixing seat (3), an adjusting nut (4) and a locking device (5); the fixing seat (3) is provided with an opening (31); one end of the screw rod (2) passes through the opening (31) and is threadedly connected to the adjusting nut (4); the other end of the screw rod (2) is connected to the line connection device (1); the line connection device (1) has a through hole (11) for the line to pass through; the locking device (5) is in contact with the adjusting nut (4) and is used to limit the movement of the adjusting nut (4) on the screw rod (2).

2. The overhead line tensioning device according to claim 1, characterized in that: The line connection device (1) is a circular ring, and the line connection device (1) is fixedly connected to the screw rod (2).

3. The overhead line tensioning device according to claim 1, characterized in that: The line connection device (1) comprises a U-shaped plate (12) and a slider (13), the slider (13) being fixedly connected to the screw rod (2), the slider (13) being detachably arranged on the inner side of the U-shaped plate (12) via a fastener (14), and the through hole (11) being surrounded by the slider (13) and the U-shaped plate (12).

4. The overhead line tensioning device according to claim 3, characterized in that: An end surface of the sliding block (13) facing the inner side of the U-shaped plate (12) is a curved surface adapted to the U-shaped plate (12).

5. The overhead line tensioning device according to claim 4, characterized in that: The U-shaped plate (12) is provided with a first mounting hole (121), and the sliding block (13) is provided with a second mounting hole (131) corresponding to the first mounting hole (121).

6. The overhead line tensioning device according to any one of claims 1 to 5, characterized in that: The locking device (5) is a nut threadably mounted on the screw rod (2).

7. The overhead line tensioning device according to any one of claims 1 to 5, characterized in that: The locking device (5) comprises a guide sleeve (51), a pull rod (52), a limit plate (53), and a compression spring (54); the guide sleeve (51) is fixedly mounted on the fixing seat (3); the pull rod (52) and the guide sleeve (51) are slidably plugged; the limit plate (53) and the pull rod (52) are fixedly connected; one end of the compression spring (54) is connected to the limit plate (53) and the other end is connected to the guide sleeve (51); the limit plate (53) is provided with a bayonet (531) for engaging with the adjusting nut (4) to limit the rotation of the adjusting nut (4).

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