Crawling ladder for power transmission line maintenance

Abstract

The invention discloses a crawling ladder for power transmission line maintenance, which comprises a base, the base is provided with a horizontal adjusting mechanism, the horizontal adjusting mechanism is provided with a fixed block, a first threaded rod, a first rotating handle and a supporting leg, the influence of the ground environment during working can be reduced, and the base is adjusted to a horizontal state through the first rotating handle; a fixed clamping mechanism is arranged on one side of the base and comprises a fixed clamping plate, a fixed screw rod and a first movable clamping plate, the base can be firmly fixed to the working position below a cement tower, the auxiliary ladder and the shrinkage sleeve connected in a sliding mode are contained in a containing groove of the base, and the height needed by operation can be calculated when the auxiliary ladder is used. And then the auxiliary ladder is pulled out of the telescopic sleeve upwards, after the auxiliary ladder is pulled to the calculated appropriate length, the long bolts are inserted into the first through holes and the corresponding second through holes for fixing, then operation can be started, and through the design, the adverse effects of crosswind, accumulated water or the ground environment near a cement tower on operators can be avoided to the maximum extent during operation.

Description

Technical Field

[0001] The invention relates to the technical field of electric power maintenance auxiliary tools, in particular to a ladder for power transmission line maintenance. Background Art

[0002] At present, some 35kV transmission lines are cement towers. Climbing operations require foot buckles to move on the towers. When replacing line pole number plates, line maintenance, and replacing porcelain bottles, operators need to move back and forth when working at high altitude on cement poles. Frequent use of foot buckles is not only time-consuming, but also has a certain risk of falling from height. The steps for adjusting the height of traditional ladders during use are relatively cumbersome, and there are certain requirements for the ground conditions around the cement poles. The bottom of the ladder needs to be solid, and it cannot be placed on unstable objects such as boxes, barrels, and flatbed trucks. It is also not allowed to be raised for use to prevent uneven sinking after being loaded or the ladder foot and the padding from loosening, which may cause danger. Anti-slip measures need to be added. When using a ladder on a smooth and frozen ground, anti-slip measures should be taken at the bottom of the ladder foot, such as wrapping nails, anchoring or clamping, etc., to prevent slipping and tipping. In addition, fixing measures need to be added, and rubber sleeves or rubber cloths need to be placed at the lower end of the ladder to increase friction and prevent slipping. In addition, when using the ladder, there will be adverse conditions around the cement tower such as crosswinds and rain, which will cause great interference to the operators and affect their personal safety.

[0003] Existing cement tower operation methods and technologies, such as the transmission line downline hard ladder shown in patent number CN118008122A, use a hook hook set on the vertical plate of the cross arm angle steel, the locking component is connected to the hook, the lock hook part has a locking position that abuts against the cross plate of the cross arm angle steel and an unlocking position separated from the cross plate, there is an angle between the cross plate and the vertical plate, the operating component is set on the locking component, the operating component has a limit position and an avoidance position, when the operating component is in the limit position, the lock hook part can be kept in the locked position, when the operating component is in the avoidance position, the lock hook part can be locked by the lock The climbing assembly is connected to the mounting seat and extends in the vertical direction, which solves the problem of unstable connection between the ladder and the cross arm; or a power maintenance climbing structure as patented by CN221929127U, which relates to the field of power maintenance equipment, comprises a first ladder with an adjustment mechanism fixedly connected to one side, and a second ladder movably connected to the outer wall of the first ladder. By turning the knob, the rotating rod can be rotated, thereby driving the safety rope fixedly connected to the outer wall of the reel to be reeled in, so that the safety rope is tightened, and then the safety rope can be tightened according to the change in the angle at which the climbing ladder is deployed. The placement of the climbing ladder is more stable, which improves the safety of power maintenance work. By placing the power maintenance tools in the storage box and pushing the storage box, the slide plate can slide along the slide groove, which is convenient for storing and placing the power maintenance tools. By pulling the pull button, the seat cushion is moved to insert the plug block into the slot, which is convenient for installing the seat cushion and improves the comfort of the maintenance personnel. Or as described in Patent No. CN117605400A, a folding climbing ladder for high-altitude maintenance during power outages includes a base frame, one end of the inner side of the base frame is fixedly connected to a cross bar, and the outer wall of one end of the cross bar is provided with The lifting mechanism can be used to lift the ladder when the lift is in operation, and the lifting mechanism can be used to lift the ladder when the lift is in operation.

[0004] The above patents all have safety hazards in crosswind or humid environments, and the steps for height adjustment are complicated or the ground environment is required to be high during use. Therefore, the use of the device is limited by the environment of the work site, which greatly reduces the efficiency of the work on site and endangers the safe and stable operation of the power grid. To this end, a ladder for power transmission line maintenance is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a ladder for power transmission line maintenance. By designing a fixed clamping mechanism on the base, the device can adapt to cement towers of different specifications, and the device can be adjusted to a horizontal position by adjusting the horizontal adjustment mechanism on the base, which greatly reduces the negative impact of the ground environment around the cement tower on the use of the ladder. The height of the ladder can be simply and quickly adjusted through the design of the first through hole, the second through hole and the long bolt.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A ladder for power transmission line maintenance, comprising a base, wherein four corners of the base are provided with horizontal adjustment mechanisms, a fixed clamping mechanism is provided on one side of the base, a receiving groove is provided on the top of the base, a telescopic sleeve is rotatably connected to one end of the receiving groove away from the fixed clamping mechanism through a rotating shaft, a plurality of pedals distributed along the length direction are fixedly connected to the telescopic sleeve, and sliding grooves are provided on both sides of the telescopic sleeve along the length direction;

[0008] A secondary ladder is slidably arranged in the two slide grooves, a first through hole is opened in the horizontal direction at the proximal end of the lower end of the secondary ladder, a long bolt is movably inserted in the first through hole, a plurality of second through holes distributed along the length direction and adapted to the long bolt are opened on both sides of the telescopic sleeve, and an arc-shaped support plate is hinged at the top of the secondary ladder.

[0009] Preferably, both sides of the proximal end of the upper end of the auxiliary ladder are rotatably connected with hooks via a rotating shaft, and the surfaces of the auxiliary ladder, the hooks and the arc-shaped support plate are coated with insulating paint.

[0010] Preferably, the horizontal adjustment mechanism includes a fixed block fixedly connected at the four corners of the base, a first threaded rod is threadedly connected to the fixed block along the vertical direction, a first rotating handle is fixedly connected to the top of the first threaded rod, and a supporting foot is rotatably connected to the bottom of the first threaded rod.

[0011] Preferably, the horizontal adjustment mechanism can adjust the base to a horizontal state by rotating the first rotating handle.

[0012] Preferably, the fixed clamping mechanism includes a fixed clamping plate fixedly connected to one side of the base, and two fixed screws distributed at intervals are threadedly connected to the outer side of the fixed clamping plate through screw holes, and the first movable clamping plate is commonly sleeved on the two fixed screws.

[0013] Preferably, a second movable splint is arranged between the fixed splint and the first movable splint, a second threaded rod is threadedly connected between the fixed splint and the base, one end of the second threaded rod is rotatably connected to the second movable splint, and a second rotating handle is fixedly connected to the other end of the second threaded rod.

[0014] Preferably, the fixing clamping mechanism can be pre-fixed by a fixing clamping plate, and after adjustment, the device can be fixed firmly by a second rotating handle.

[0015] Preferably, one end of the storage groove away from the fixed clamping mechanism is rotatably connected to a telescopic sleeve via a rotating shaft.

[0016] Preferably, the length of the base is fixed, and the appropriate total length of the pedal can be calculated according to the height of the aerial work, and then the auxiliary ladder is pulled upward from the telescopic sleeve. After it is pulled to the calculated appropriate length, the long bolt is inserted into the first through hole and the corresponding second through hole for fixing, so that the ladder can be simply and quickly fixed to the required length.

[0017] Preferably, a plurality of pedals distributed along the length direction are fixedly connected to the telescopic sleeve.

[0018] Preferably, after the arc-shaped support plate contacts the cement tower, the pedal is fixed on the cement tower by the pedal's own weight.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The device has a designed pedal. When the height of the ladder needs to be adjusted, the auxiliary ladder only needs to be pulled out from the telescopic sleeve upwards. After it is pulled to an appropriate length, a long bolt is inserted into the first through hole and the corresponding second through hole to fix it. Then, the adjusted auxiliary ladder is placed on the cement pole through the arc support plate. In this way, the height can be adjusted quickly, which greatly improves the maintenance efficiency of the staff;

[0021] (2) The design of the base of this device greatly reduces the disadvantage of the traditional ladder in that the ground near the concrete tower column is too high. When the ground is uneven, the base can be kept level by adjusting the level adjustment mechanism. When the ground is too soft and slippery, the base can reduce the pressure on the ground through the four support feet to prevent the device from sliding.

[0022] (3) The device is designed with a fixed clamping mechanism so that the device can be readjusted in its use position by adjusting the second rotating handle, thereby simplifying the use process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The figure is a schematic diagram of the main structure of a ladder for power transmission line maintenance;

[0024] Figure 2 A ladder for power transmission line maintenance Figure 1 A schematic diagram of the enlarged structure at point A;

[0025] Figure 3 A ladder for power transmission line maintenance Figure 1 A schematic diagram of the structure enlarged at B;

[0026] Figure 4 This is a schematic diagram of the structure of a slideway in a ladder for power transmission line maintenance;

[0027] Figure 5 The present invention is a schematic diagram of the structure of a medium-length bolt in a ladder for power transmission line maintenance.

[0029] 1. Base; 2. Horizontal adjustment mechanism; 3. Fixed clamping mechanism; 4. Storage slot; 5. Telescopic sleeve; 6. Pedal; 7. Slide; 8. Auxiliary ladder; 9. First through hole; 10. Long bolt; 11. Second through hole; 12. Arc support plate; 13. Hook; 14. Second movable splint; 15. Second threaded rod; 16. Second rotating handle;

[0030] 201, fixed block; 202, first threaded rod; 203, first rotating handle; 204, supporting foot;

[0031] 301, fixed splint; 302, fixed screw; 303, first movable splint. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] 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 one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. The present invention is described in detail in conjunction with the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional view showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional spatial dimensions of length, width and depth should be included. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0034] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0035] Example 1:

[0036] See also Figure 1-5 A ladder for power transmission line maintenance includes a base 1, and horizontal adjustment mechanisms 2 are arranged at the four corners of the base 1. The setting of the horizontal adjustment mechanism 2 can adjust the height of the supporting feet 204 to adapt to the ground environment by rotating the first rotating handle 203 when encountering uneven ground, so as to maintain the base 1 in a horizontal state. A fixed clamping mechanism 3 is arranged on one side of the base 1. The ladder and the cement tower can be pre-fixed together by using a first movable splint 303 and a fixing screw 302. A storage groove 4 is opened on the top of the base 1, and a telescopic sleeve 5 and an auxiliary ladder 8 can be folded and stored in the storage groove 4 for convenient transportation and storage. A telescopic sleeve 5 is rotatably connected to the end of the storage groove 4 away from the fixed clamping mechanism 3 through a rotating shaft, and a plurality of pedals 6 distributed along the length direction are fixedly connected to the telescopic sleeve 5, and sliding grooves 7 are opened on both sides of the telescopic sleeve 5 along the length direction. A secondary ladder 8 is slidably arranged in the two slide grooves 7, a first through hole 9 is opened in the horizontal direction at the proximal end of the lower end of the secondary ladder 8, a long bolt 10 is movably inserted in the first through hole 9, and a plurality of second through holes 11 distributed along the length direction and adapted to the long bolt 10 are opened on both sides of the telescopic sleeve 5. The secondary ladder 8 is telescoped in the telescopic sleeve 5, and then fixed with the long bolts 10 inserted in the first through hole 9 and the corresponding second through holes 11, so as to adjust the height. An arc-shaped support plate 12 is hinged at the top of the secondary ladder 8, so that the secondary ladder 8 can be more stably erected on the cement pole.

[0037] Both sides of the proximal end of the upper end of the auxiliary ladder 8 are rotatably connected with hooks 13 through a rotating shaft, on which necessary maintenance tools can be placed, which simplifies the maintenance process and improves the work efficiency of the maintenance personnel. The surfaces of the auxiliary ladder 8, the hook 13 and the arc-shaped support plate 12 are coated with insulating paint. If an unexpected current occurs during the maintenance process, the insulating paint can effectively block the current and ensure the personal safety of the maintenance personnel.

[0038] The horizontal adjustment mechanism 2 includes a fixed block 201 fixedly connected to the four corners of the base 1, a first threaded rod 202 is threadedly connected to the fixed block 201 in the vertical direction, a first rotating handle 203 is fixedly connected to the top of the first threaded rod 202, and a supporting foot 204 is rotatably connected to the bottom of the first threaded rod 202. If a bumpy ground is encountered, the corner of the base 1 at a low position can be adjusted. By rotating the first rotating handle 203, the first threaded rod 202 is driven to rotate, and the supporting foot 204 will move downward, first contacting the ground, and then supporting the corner of the base 1 at a low position to keep the base 1 in a horizontal state.

[0039] The fixed clamping mechanism 3 includes a fixed clamping plate 301 fixedly connected to one side of the base 1, and two fixed screws 302 distributed at intervals are threadedly connected to the outer side of the fixed clamping plate 301 through screw holes, and a first movable clamping plate 303 is commonly sleeved on the two fixed screws 302. When fixing the ladder, the fixed clamping plate 301 is firstly set on one side of the outer periphery of the cement pole, and then the first movable clamping plate 303 is set on the other side of the cement pole, symmetrically arranged with the fixed clamping plate 301, and finally the fixed screws 302 are used to fix the fixed clamping plate 301 and the first movable clamping plate 303.

[0040] A second movable splint 14 is arranged between the fixed splint 301 and the first movable splint 303, and a second threaded rod 15 is threadedly connected between the fixed splint 301 and the base 1, one end of the second threaded rod 15 is rotatably connected to the second movable splint 14, and a second rotating handle 16 is fixedly connected to the other end of the second threaded rod 15. If a cement pole smaller than the minimum clamping diameter of the first movable splint 303 and the fixed splint 301 is encountered, the second rotating handle 16, the second threaded rod 15 and the second movable splint 14 can be cooperated to further clamp and fix.

[0041] When in use, place the base 1 on the ground, and make the fixed splint 301 fit the outer periphery of the cement pole. If the ground is uneven, it can be corrected through the horizontal adjustment mechanism 2 at the four corners to make the base 1 placed horizontally on the ground, and then the base 1 and the cement pole are fixed together through the cooperation between the first movable splint 303, the fixed screw 302 and the fixed splint 301, and then the height of the ladder is adjusted according to the required maintenance height. When adjusting, the auxiliary ladder 8 is pulled upward from the telescopic sleeve 5, and after being pulled to the appropriate length, the long bolt 10 is inserted into the first through hole 9 and the corresponding second through hole 11 for fixation, and then the adjusted auxiliary ladder 8 is set on the cement pole through the arc support plate 12, and then the staff can carry out line maintenance.

[0042] Example 2:

[0043] Figure 1 A structural diagram of a ladder for power transmission line maintenance of the present invention is given, which mainly includes a base 1, a horizontal adjustment mechanism 2, a fixed clamping mechanism 3, a storage groove 4, a shrink sleeve 5, a pedal 6, an auxiliary ladder 8, an arc-shaped support plate 12, etc. The role of each component in actual use is now further explained.

[0044] Replacing the line pole number plate, line maintenance and replacing porcelain bottles on cement towers are high-altitude operations. The first step is to clean the area around the target cement tower to avoid the impact of the complex surrounding environment on the operation; the second step is to check the operation of the cement tower. When the cement tower shows unexpected conditions such as tilt, damage or shaking, the operation should be terminated.

[0045] Preparation:

[0046] 1. Move the base close to the target cement tower column;

[0047] 2. Set the first movable clamping plate 303 on the other side of the cement pole and use the fixing screw 302 to pre-fix the bottom plate 1;

[0048] 3. Adjust the level adjustment mechanism 2 to make the base 1 reach a horizontal state;

[0049] 4. Adjust the second rotating handle 16 to place the arc-shaped support plate against the cement tower column to securely fix the base 1;

[0050] 5. Calculate the height required for the operation, then pull the auxiliary ladder 8 upward from the telescopic sleeve 5, and after pulling it to the calculated appropriate length, insert the long bolt 10 into the first through hole 9 and the corresponding second through hole 11 to fix it;

[0051] 6. Place the arc-shaped support plate 12 against the cement tower column and then the operation can be carried out.

[0052] The above-mentioned technical solutions are the preferred implementation modes of the present invention and are only used to facilitate the explanation of the present invention. They are not intended to limit the present invention in any form. Any person with ordinary knowledge in the relevant technical field, if they do not depart from the scope of the technical features of the present invention, can make partial changes or modifications to the technical contents disclosed in the present invention, and they are still within the scope of the technical features of the present invention without departing from the technical features of the present invention.

[0053] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A ladder for power transmission line maintenance, comprising a base (1), characterized in that: The base (1) is provided with a horizontal adjustment mechanism (2) and a fixed clamping mechanism (3), the fixed clamping mechanism (3) comprising a fixed clamping plate (301), a fixed screw (302), and a first movable clamping plate (303), the first movable clamping plate (303) having fixed screws (302) at both ends, the two fixed screws (302) being respectively plugged into the tops of both ends of the fixed clamping plate (301), the bottom of the fixed clamping plate (301) being fixedly connected to the base (1), the middle of the fixed clamping plate (301) being provided with a second threaded rod (15), the inner side of the fixed clamping plate (301) being provided with a second movable clamping plate (14) connected with the second threaded rod (15), the base (1) being provided with a storage groove (4), the storage groove (4 ) is provided with a first rotating handle (203) connected to a second threaded rod (15) on the inner side, a shrink sleeve (5) is provided in the storage groove (4), the bottom end of the shrink sleeve (5) is hinged to the base (1), a pair of first through holes (9) are provided on both sides of the shrink sleeve (5), a long bolt (10) is provided in the first through hole (9), a slide groove (7) is provided at the top of the shrink sleeve (5), a sliding component matching the slide groove (7) is provided at the bottom of the auxiliary body (8), the bottom of the vertical rod of the auxiliary ladder (8) can be raised and lowered along the inner wall of the slide groove (7), second through holes (11) are provided on both sides of the auxiliary ladder (8), an arc-shaped support plate (12) is provided at the top of the auxiliary ladder (8), and pedals (6) are provided on the shrink sleeve (5) and the auxiliary ladder (8).

2. A ladder for power transmission line maintenance according to claim 1, characterized in that: The horizontal adjustment mechanism (2) comprises a fixed block (201), a first threaded rod (202), a first rotating handle (203), and a supporting foot (204); the first threaded rod (202) is fixed under the first rotating handle (203); the supporting foot (204) is fixed under the first threaded rod (202); the first threaded rod (202) is plugged into the fixed block (201); and one side of the fixed block (201) is fixedly connected to the base (1).

3. A ladder for power transmission line maintenance according to claim 2, characterized in that: The second movable clamping plate (14) is slidably connected to the second threaded rod (15).

4. A ladder for power transmission line maintenance according to claim 3, characterized in that: The two ends of the arc-shaped support plate (12) are slidably connected to the inner side of the auxiliary ladder (8).

5. A ladder for power transmission line maintenance according to claim 4, characterized in that: The hook (13) is fixed on the side wall at the top end of the auxiliary ladder (8).

6. A ladder for power transmission line maintenance according to claim 5, characterized in that: The interval between the first through holes (9) is smaller than the interval between the second through holes (11).

7. A ladder for power transmission line maintenance according to claim 6, characterized in that: The inner wall of the storage groove (4) is wide at the top and narrow at the bottom, and the shrink sleeve (5) is snap-fitted and fixed to the storage groove (4).

8. A ladder for power transmission line maintenance according to claim 6, characterized in that: The pedal (6) is provided with anti-slip rubber.

9. A ladder for power transmission line maintenance according to claim 8, characterized in that: The long bolt (10) passes through the first through hole (9) and the second through hole (11) to fix the auxiliary ladder (8) in the slide groove (7).

Images