Unbalanced rope ladder head

Abstract

The utility model discloses an unbalanced rope ladder head which comprises a frame body, a left pulley, an anti-falling device, a right vertical plate, a right fixed plate, an upper pulley and a lower pulley, wherein the right vertical plate and the right fixed plate are oppositely arranged; the frame body comprises a left stand column and a right stand column. A hook is arranged at the top end of the left stand column. The anti-dropping device is connected to the hook and is used for preventing the wire from dropping from the lower part of the hook; the right fixing plate is arranged at the top end of the right stand column. The upper pulley and the lower pulley are arranged between the right fixing plate and the right vertical plate, and the upper pulley, the lower pulley, the right vertical plate and the right fixing plate define a lead placing area; the self-locking device is used for opening or closing the wire placing area; the left pulley, the upper pulley and the lower pulley are the same in size, and the wheel center of the upper pulley is lower than the wheel center of the left pulley, so that the wire inclines downwards from left to right. The unbalanced rope ladder head is suitable for the scene that a single wire is inclined by a small angle due to the fact that the height difference of two adjacent base towers is large, and compared with a balanced rope ladder head, the phenomenon of wire outlet sideslip of the rope ladder head is reduced.

Description

Technical Field

[0001] The utility model relates to the field of electric power operation, in particular to an unbalanced soft ladder head. Background Art

[0002] In a transmission line, for a single-conductor line where the height difference between two adjacent towers is large and the angle between the conductor and the horizontal plane is greater than 15 degrees, the proportion of such lines is approximately 15%. When it comes to the work of accessing the conductor, the existing soft ladder head has a balanced and symmetrical structure. Due to the action of human gravity, the soft ladder head will tilt. When the existing soft ladder head is placed on the conductor, the pulley on the downhill side will slide out of the conductor, and the pulley on the uphill side will press on the conductor. At the same time, the existing one is very inconvenient to operate and has a low safety factor.

[0003] Therefore, there is an urgent need for a soft ladder head suitable for the scenario where the height difference between two adjacent towers is large, resulting in a small-angle inclination of a single conductor. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an unbalanced soft ladder head that reduces the phenomenon of side slipping of the outgoing line of the soft ladder head.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An unbalanced soft ladder head includes a frame body, a left pulley, an anti-detachment device, relatively arranged right vertical plates and right fixing plates, and an upper pulley and a lower pulley arranged vertically;

[0007] The frame body includes a left column and a right column;

[0008] A hook is provided at the top of the left column, and the left pulley is arranged on the hook;

[0009] The anti-detachment device is connected to the hook to prevent the wire from detaching from below the hook;

[0010] The right vertical plate and the top of the right column are relatively arranged, and the right fixing plate is arranged at the top of the right column;

[0011] The upper pulley and the lower pulley are arranged between the right fixing plate and the right vertical plate, and the upper pulley, the lower pulley, the right vertical plate and the right fixing plate enclose a wire placement area;

[0012] A self-locking device is used to open or close the wire placement area;

[0013] The left pulley, the upper pulley and the lower pulley have the same size, and the center of the upper pulley is lower than the center of the left pulley, so that the wire inclines downward from left to right.

[0014] Further, an upper rotating shaft and a lower rotating shaft are fixed on the right fixing plate, the upper pulley is sleeved outside the upper rotating shaft, and the lower pulley is sleeved outside the lower rotating shaft;

[0015] The right vertical plate and the right fixing plate are respectively placed at both ends of the upper rotating shaft and the lower rotating shaft.

[0016] Furthermore, the right fixing plate is fixed to the top end of the right vertical column.

[0017] Furthermore, the middle position of the right fixing plate is rotatably connected to the top end of the right vertical column; the lengths of the upper rotating shaft and the lower rotating shaft from the middle position of the right fixing plate are different.

[0018] Furthermore, when the right fixing plate rotates relative to the right vertical column and the lower pulley flips above the upper pulley, the center of the lower pulley is lower than the center of the left pulley, so that the wire inclines in the direction from left to right.

[0019] Furthermore, one end of the right vertical plate is rotatably connected to the upper rotating shaft, and the self-locking device includes an opening groove provided at the other end of the right vertical plate. When the right vertical plate rotates relative to the upper rotating shaft, the lower rotating shaft can be engaged with or disengaged from the opening groove.

[0020] In the above technical solution, the present utility model has the following beneficial effects:

[0021] The present utility model provides an unbalanced soft ladder head, and the center of the upper pulley is lower than the center of the left pulley. In this way, the two pulleys are not horizontally arranged, the left pulley is located on the uphill, the upper pulley is located on the downhill, and the connecting line of the wire-pressing positions of the two pulleys is inclined from top to bottom, which can better match the inclined wire, increase the contact area between the upper pulley and the left pulley and the wire, and solve the problem of side slip on the wire outlet side of the existing soft ladder head. The improved unbalanced soft ladder head can meet the use in general working conditions. It can be used under the condition of a large inclination angle of the wire. When the staff uses the unbalanced soft ladder head at high altitude, the operation is convenient, does not affect the operation, and does not cause safety problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic front view structure diagram of the unbalanced soft ladder head according to Embodiment 1 disclosed by the present utility model;

[0024] Figure 2 It is a schematic structure diagram of the top end of the left vertical column disclosed by the present utility model;

[0025] Figure 3 It is a schematic structure diagram of the self-locking structure disclosed by the present utility model;

[0026] Figure 4 This is a schematic front view structure diagram of the unbalanced soft ladder head according to the second embodiment disclosed by the present utility model.

[0027] Reference numerals:

[0028] Frame body 1, left vertical column 11, right vertical column 12, right vertical plate 13, opening groove 131, right fixing plate 14, left pulley 2, upper pulley 3, lower pulley 4. Specific implementation manners

[0029] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0030] It should be noted that the orientation or positional relationship indicated by the terms "above", "one end", "upper", etc. used herein is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description. Similar expressions are only for the purpose of illustration and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model; in addition, the terms "one part", "two parts", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] Embodiment 1:

[0032] As Figures 1-3 shown, an unbalanced soft ladder head includes a frame body 1, a left pulley 2, an anti - detachment device, relatively arranged right vertical plates 13 and right fixing plates 14, and upper pulley 3 and lower pulley 4 arranged vertically.

[0033] Among them, the frame body 1 includes a vertical left vertical column 11 and a right vertical column 12.

[0034] A hook is provided at the top of the left vertical column 11. The left pulley 2 is arranged on the hook. The wire is located between the lower part of the left pulley and the anti - detachment device. The anti - detachment device is connected to the hook to prevent the electric wire from slipping out from below the hook. The anti - detachment device plays a role in opening and closing the opening below the hook, which is prior art. For details, reference can be made to the Chinese utility model patent with the application number 201320168944.0 and the application name "Insulated soft ladder head with anti - slip protection function". Or refer to the Chinese utility model patent with the application number 202010985954.8 and the application name "A new type of soft ladder head with a protection structure".

[0035] The top ends of the right vertical plate 13 and the right vertical column 12 are arranged opposite to each other, and the right fixing plate 14 is arranged at the top end of the right vertical column 12. The right fixing plate 14 serves to connect the right vertical plate 13 to the right vertical column 12. The upper pulley 3 and the lower pulley 4 are arranged between the right fixing plate 14 and the right vertical plate 13, and the upper pulley 3, the lower pulley 4, the right vertical plate 13 and the right fixing plate 14 enclose a wire placement area; the self-locking device is used to open or close the wire placement area.

[0036] The left pulley 2, the upper pulley 3 and the lower pulley 4 have the same size, and the center of the upper pulley 3 is lower than the center of the left pulley 2.

[0037] In this way, the wire below the upper pulley 3 and the left pulley 2 is in the same trend as the connection line between the upper pulley 3 and the left pulley 2, and both pulleys of the unbalanced soft ladder head will be stressed, rather than only the left pulley going uphill being stressed.

[0038] The upper rotating shaft and the lower rotating shaft are fixed on the right fixing plate 14. The upper pulley 3 is sleeved outside the upper rotating shaft, and the lower pulley 4 is sleeved outside the lower rotating shaft; the right vertical plate 13 and the right fixing plate 14 are respectively placed at both ends of the upper rotating shaft and the lower rotating shaft. The right fixing plate 14 can be fixedly connected to the right vertical plate 13, and the right fixing plate 14 is fixedly attached to the right vertical column.

[0039] When the right fixing plate 14 is fixed to the right vertical plate 13, the self-locking structure can be arranged on the right fixing plate 14. A notch is arranged at the middle position of the right fixing plate 14, and the self-locking structure can open and close the notch for the wire to extend into the notch and enter the wire placement area.

[0040] When the right fixing plate 14 and the right vertical plate 13 can rotate relative to each other, the technical solution of the self-locking structure is preferably: as Figure 3 shown, one end of the right vertical plate 13 is rotatably connected to the upper rotating shaft. The self-locking device includes an opening groove 131 arranged at the other end of the right vertical plate 13. When the right vertical plate 13 rotates relative to the upper rotating shaft, the lower rotating shaft can be caught in or away from the opening groove 131.

[0041] Embodiment 2:

[0042] Different from Embodiment 1, the right fixing plate 14 is not fixed to the frame body 1, but instead the middle position of the right fixing plate 14 is rotatably connected to the top end of the right vertical column 12; the upper rotating shaft and the lower rotating shaft are fixed on the right fixing plate 14. The upper pulley 3 is sleeved outside the upper rotating shaft, and the lower pulley 4 is sleeved outside the lower rotating shaft; the right vertical plate 13 and the right fixing plate 14 are respectively placed at both ends of the upper rotating shaft and the lower rotating shaft. The right fixing plate 14 is fixed to the top end of the right vertical column 12.

[0043] The lengths of the upper rotating shaft and the lower rotating shaft from the middle position of the right fixed plate 14 are different. In this way, the upper pulley 3 and the lower pulley 4 can be flipped and transformed in the up-and-down position, and the wire coming from the uphill abuts against the bottom of the upper pulley 3 or the lower pulley 4 that is flipped to the upper side. Since the rotation axes of the upper pulley 3 and the lower pulley 4 from the right fixed plate 14 are different, when the left pulley and the upper pulley flipped to the upper side are on the same horizontal line, it can be applicable to horizontal wires. When the lower pulley 3 is flipped to the upper side, it can be applicable to inclined wires. Such an unbalanced soft ladder head can be applicable to horizontal or inclined wires.

[0044] Preferably, the right fixed plate 14 rotates relative to the right vertical column 12, so that when the lower pulley 4 is flipped above the upper pulley 3, the center of the lower pulley 4 is lower than the center of the left pulley 2. Since the rotation axes of the upper pulley 3 and the lower pulley 4 from the right fixed plate 14 are different, it can be applicable to wires with different inclinations.

[0045] Only some exemplary embodiments of the present invention have been described by way of illustration above. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An unbalanced soft ladder head, characterized in that, It includes a frame body (1), a left pulley (2), an anti - detachment device, relatively arranged right vertical plates (13) and right fixing plates (14), and an upper pulley (3) and a lower pulley (4) arranged vertically; The frame body (1) includes a left vertical column (11) and a right vertical column (12); A hook is provided at the top of the left vertical column (11), and the left pulley (2) is arranged on the hook; The anti - detachment device is connected to the hook to prevent the wire from coming out from below the hook; The top of the right vertical plate (13) and the top of the right vertical column (12) are relatively arranged, and the right fixing plate (14) is arranged at the top of the right vertical column (12); The upper pulley (3) and the lower pulley (4) are arranged between the right fixing plate (14) and the right vertical plate (13). The upper pulley (3), the lower pulley (4), the right vertical plate (13) and the right fixing plate (14) enclose a wire placement area; The self - locking device is used to open or close the wire placement area; The left pulley (2), the upper pulley (3) and the lower pulley (4) have the same size, and the center of the upper pulley (3) is lower than the center of the left pulley (2).

2. The unbalanced soft ladder head according to claim 1, wherein An upper rotating shaft and a lower rotating shaft are fixed on the right fixing plate (14). The upper pulley (3) is sleeved outside the upper rotating shaft, and the lower pulley (4) is sleeved outside the lower rotating shaft; The right vertical plate (13) and the right fixing plate (14) are respectively placed at both ends of the upper rotating shaft and the lower rotating shaft.

3. The unbalanced soft ladder head according to claim 2, characterized in that, The right fixing plate (14) is fixed to the top of the right vertical column (12).

4. The unbalanced soft ladder head according to claim 2, wherein The middle position of the right fixing plate (14) is rotationally connected to the top of the right vertical column (12); the lengths of the upper rotating shaft and the lower rotating shaft from the middle position of the right fixing plate (14) are different.

5. An unbalanced soft ladder head according to claim 4, characterized in that, When the right fixing plate (14) rotates relative to the right vertical column (12) so that the lower pulley (4) flips above the upper pulley (3), the center of the lower pulley (4) is lower than the center of the left pulley (2).

6. The unbalanced soft ladder head according to claim 2, characterized in that, One end of the right vertical plate (13) is rotationally connected to the upper rotating shaft. The self - locking device includes an opening groove (131) provided at the other end of the right vertical plate (13). When the right vertical plate (13) rotates relative to the upper rotating shaft, the lower rotating shaft can be engaged with or separated from the opening groove (131).

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