Closed hook insulating transverse ladder

Abstract

The invention provides a closed hook insulating transverse ladder which comprises an insulating ladder body and a self-closing hook, a height adjusting mechanism is arranged at one end, close to the insulating ladder body, of the self-closing hook, the height adjusting mechanism is rotatably connected with one end of the insulating ladder body, and an opening mechanism is arranged on the self-closing hook; when the self-closing hook is hung on a line, the line pushes the baffle, the baffle swings, the clamping block releases the baffle ring, the sleeve moves upwards under the elastic force effect of the spring, the upper end of the sleeve is arranged on the outer side of the lower end of the upper vertical section in a sleeving mode, the opening of the J-shaped hook is closed at the iron tower end, and the potential safety hazard that the hook falls off is avoided; the self-closing hook can be operated at an iron tower end to be stably hung on a line, stable fixation of the insulating transverse ladder is achieved, personnel safety during operation of crossing a tension composite insulator is effectively guaranteed, operators do not need to bypass to an operation point, operation time is remarkably saved, work efficiency is improved, and maintenance cost is reduced.

Description

Technical Field

[0001] This invention belongs to the field of power engineering technology, and specifically relates to a closed-hook insulated horizontal ladder. Background Technology

[0002] In high-voltage transmission lines, composite insulators are becoming increasingly prevalent. For tension towers with voltage levels of 110kV and above, composite insulators are placed horizontally. When workers need to reach the line for maintenance, they often have to walk from the tower onto the line to carry out the work, which requires crossing the horizontally placed tension composite insulators.

[0003] Since it is forbidden to step on composite insulators, a horizontal ladder needs to be erected above the tension insulator to span it. One end of the ladder is tied to the tower with a rope, and the other end spans the insulator and is hung on the ground wire via a hook.

[0004] According to safety regulations, all hooks must have a closing mechanism during operation. However, the hooks on the currently used horizontal ladders do not have a closing mechanism. The main reason for this is that the front end of the horizontal ladder (in the direction of the power line) extends more than two meters. When a person stands at the rear end of the horizontal ladder (on the tower end), they cannot control the opening and closing of the closing mechanism. As a result, if a spring-reset locking mechanism similar to that of the safety rope hook is installed, the horizontal ladder cannot be removed from the tower side after the operation is completed. If the operator opens the locking mechanism on the horizontal ladder first and then returns to the tower, there is a safety hazard of the hook falling off during the process of crossing the horizontal ladder, which does not meet the safety requirements. Therefore, the hooks on the currently used insulated horizontal ladders do not have a closing mechanism.

[0005] Because the insulated horizontal ladder lacks a closing mechanism, the existing insulated horizontal ladder cannot be used due to non-compliance with safety regulations. During transmission line maintenance, in order to avoid stepping on the composite insulators, maintenance personnel can only go up the tower to the ground wire, walk along the ground wire to the span, and then go down to the work point on the line below. Although this high-altitude detour method meets safety regulations, it increases the time spent working at height. In terms of both economic efficiency and personnel physical exertion, it is more costly than using an insulated horizontal ladder to cross the composite insulator.

[0006] Therefore, a closed hook insulated horizontal ladder that can be operated to close or open at the end of the horizontal ladder tower is designed to solve the current technical problems. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides an insulated horizontal ladder with a closing hook that enables the ladder to be opened or closed at the end of a tower.

[0008] The technical solution of this invention is as follows: a self-closing hook insulated ladder, comprising an insulated ladder body and a self-closing hook, wherein a height adjustment mechanism is provided at one end of the self-closing hook near the insulated ladder body, the height adjustment mechanism being rotatably connected to one end of the insulated ladder body, and an opening mechanism is provided on the self-closing hook; the height adjustment mechanism has a horizontal plate; the self-closing hook has a J-shaped hook, one end of which is fixedly connected to the top of the horizontal plate, and the other end of which is provided with an upper vertical section; a lower vertical section is vertically fixedly provided on the horizontal plate, and the lower vertical section... A sleeve is slidably provided on the outside. A spring is fitted on the outside of the lower vertical section between the lower end of the sleeve and the horizontal plate. A retaining ring is fixedly provided on the outside of the lower end of the sleeve. A baffle is connected to the top of the horizontal plate. A locking block for stopping the retaining ring is provided on the baffle. The upper end of the baffle extends between the upper vertical section and the lower vertical section. The opening mechanism has opening guide rods evenly distributed at the bottom of the retaining ring. A pull plate is fixedly provided on the end of the opening guide rod away from the retaining ring. A pull ring is fixedly provided on the pull plate. A pull rope is connected to the pull ring.

[0009] Furthermore, the end of the height adjustment mechanism opposite to the self-closing hook is rotatably connected to the insulated ladder body, and the height adjustment mechanism is used to adjust the distance between the self-closing hook and the insulated ladder body.

[0010] Furthermore, the height adjustment mechanism has a portal frame that is slidably connected to the cross plate. The two ends of the portal frame are rotatably connected to the ends of the insulated ladder body. A height adjustment screw is rotatably provided on the side of the cross plate near the portal frame, and the height adjustment screw is threadedly connected to the portal frame. The self-closing hook is fixedly provided on the side of the cross plate away from the insulated ladder body, and a handle is fixedly provided on the end of the height adjustment screw away from the cross plate.

[0011] Furthermore, two sliding rods parallel to the height adjusting screw are symmetrically arranged on the side of the horizontal plate near the portal frame, and the sliding rods are slidably connected to the portal frame perpendicularly.

[0012] Furthermore, a rope guide wheel corresponding to the pull rope is fixedly installed on the gantry frame.

[0013] Furthermore, the insulating ladder body is symmetrically provided with claws and a translation adjustment mechanism for driving the claws to move along the insulating ladder body below the end opposite to the self-closing hook.

[0014] Furthermore, the translation adjustment mechanism has a translation screw that is rotatably mounted on the top of the insulating ladder body via two bearings. A translation seat is threaded onto the translation screw. A side plate is fixedly provided on one side of the translation seat. The pawl is fixedly provided at the end of the side plate. A limit guide rod is fixedly provided between the two bearings. The translation seat is slidably connected to the limit guide rod.

[0015] Furthermore, reinforcing rods are rotatably connected to both sides of the end of the insulated ladder body near the self-closing hook. The end of the reinforcing rod opposite to the insulated ladder body has an external thread section. An internal threaded connecting seat is connected to the outer thread of the external thread section. A hanging plate is fixedly installed at one end of the internal threaded connecting seat.

[0016] Furthermore, a support spring is provided between the baffle and the J-shaped hook, one end of the support spring is fixedly connected to the baffle, and the other end of the support spring is fixedly connected to one side of the J-shaped hook.

[0017] Furthermore, an upper limit edge corresponding to the upper end of the sleeve is fixedly provided in the middle of the upper vertical section, and the interior of the upper end of the sleeve matches the lower end of the upper vertical section.

[0018] The beneficial effects of this invention are: (1) In this invention, when the self-closing hook is hung on the line, the line pushes the baffle, the baffle swings, the locking block releases the retaining ring, the sleeve moves up under the elastic force of the spring, the upper end of the sleeve is fitted on the lower end of the upper vertical section, and the opening of the J-shaped hook is closed at the tower end to avoid the safety hazard of the hook falling off. (2) The self-closing hook can be operated at the tower end to stably hang on the line, realizing the stable fixation of the insulated ladder, effectively ensuring the safety of personnel when crossing the tension composite insulator, so that the operators no longer need to detour to the work point, significantly saving work time, improving work efficiency, and reducing maintenance costs; (3) After the construction is completed, pull the rope. The rope will move the pull ring and sleeve down to open the opening of the J-shaped hook so that the horizontal ladder can be removed at the end of the tower. Attached Figure Description

[0019] Figure 1 This is one of the structural schematic diagrams of the closed hook insulating ladder in this invention.

[0020] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.

[0021] Figure 3 for Figure 1 A magnified view of a section at point B in the middle.

[0022] Figure 4This is the second schematic diagram of the closed hook insulating ladder in this invention.

[0023] Figure 5 for Figure 4 A magnified view of a section at point C. Detailed Implementation

[0024] Various exemplary embodiments of the invention will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the invention or its application or use. The invention can be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the invention thorough and complete, and to fully express the scope of the invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0025] The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, without excluding the possibility of encompassing other elements. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] like Figures 1 to 5As shown, a self-closing hook insulated ladder is disclosed, including an insulated ladder body 1 and a self-closing hook 2. A height adjustment mechanism 3 is provided on one end of the self-closing hook 2 near the insulated ladder body 1. The height adjustment mechanism 3 is rotatably connected to one end of the insulated ladder body 1. An opening mechanism 8 is provided on the self-closing hook 2. The height adjustment mechanism 3 has a horizontal plate 35. The self-closing hook 2 has a J-shaped hook 21. One end of the J-shaped hook 21 is fixedly connected to the top of the horizontal plate 35. The other end of the J-shaped hook 21 is provided with an upper vertical section 22. A lower vertical section 23 is vertically fixed on the horizontal plate 35, corresponding to the upper vertical section 22. A sleeve 24 is slidably provided on the outer side of the lower vertical section 23. A spring 25 is fitted on the outer side of the lower vertical section 23 between the lower end of the sleeve 24 and the horizontal plate 35. A retaining ring 26 is fixedly provided on the outer side of the lower end of the sleeve 24. A baffle 28 is connected to the top of the horizontal plate 35. A locking block 27 for stopping the retaining ring 26 is provided on the baffle 28. The upper end of the baffle 28 extends between the upper vertical section 22 and the lower vertical section 23 and leaves a gap for the line to pass through. The opening mechanism 8 has an opening guide rod 81 evenly arranged at the bottom of the retaining ring 26. A pull plate 82 is fixedly provided on the end of the opening guide rod 81 away from the retaining ring 26. A pull ring 83 is fixedly provided on the pull plate 82 and a pull rope is connected to the pull ring 83. In this embodiment, when the self-closing hook 2 is hung on the line, the line pushes the baffle 28, the baffle 28 swings, the locking block 27 releases the retaining ring 26, and the sleeve 24 moves upward under the elastic force of the spring 25. The upper end of the sleeve 24 is fitted on the outer side of the lower end of the upper vertical section 22, and the opening of the J-shaped hook 21 is closed at the tower end to avoid the safety hazard of the hook falling off. The self-closing hook 2 can be operated at the tower end to stably hang the insulated ladder on the line, effectively ensuring the safety of personnel when crossing the tension composite insulator. This eliminates the need for workers to detour to the work point, significantly saving work time, improving work efficiency, and reducing maintenance costs. After construction is completed, pulling the rope will cause the pull ring 83 and sleeve 24 to move down, opening the opening of the J-shaped hook 21, so that the ladder can be removed at the tower end.

[0027] In some embodiments, as Figure 4 As shown, the end of the height adjustment mechanism 3 that is away from the self-closing hook 2 is rotatably connected to the insulated ladder body 1. The height adjustment mechanism 3 is used to adjust the distance between the self-closing hook 2 and the insulated ladder body 1, so as to match the lines of different heights. When the self-closing hook 2 is hung on the line, the insulated ladder body 1 can be kept in a relatively horizontal state, which makes it convenient for construction personnel to move on the insulated ladder body 1.

[0028] In some embodiments, the height adjustment mechanism 3 has a portal frame 31 slidably connected to the horizontal plate 35. The two ends of the portal frame 31 are rotatably connected to the ends of the insulated ladder body 1. A height adjustment screw 32 is rotatably provided on the side of the horizontal plate 35 near the portal frame 31. The height adjustment screw 32 is threadedly connected to the portal frame 31. A self-closing hook 2 is fixedly provided on the side of the horizontal plate 35 away from the insulated ladder body 1. A handle 33 is fixedly provided on the end of the height adjustment screw 32 away from the horizontal plate 35. By rotating the height adjustment screw 32 through the handle 33, the threaded structure between the height adjustment screw 32 and the portal frame 31 drives the horizontal plate 35 to move up and down, thereby adjusting the distance between the self-closing hook 2 and the insulated ladder body 1.

[0029] In some embodiments, as a specific sliding connection between the horizontal plate 35 and the portal frame 31, two slide rods 34 parallel to the height adjustment screw 32 are symmetrically arranged on the side of the horizontal plate 35 near the portal frame 31, and the slide rods 34 are vertically slidably connected to the portal frame 31.

[0030] In some embodiments, a rope guide wheel 9 corresponding to the pull rope is fixedly provided on the gantry frame 31. The direction of the pull rope can be changed by the rope guide wheel 9, which makes it convenient to pull the pull ring 83 at the tower end.

[0031] In some embodiments, a claw 7 and a translation adjustment mechanism 6 for driving the claw 7 to move along the insulating ladder body 1 are symmetrically arranged below one end of the insulating ladder body 1 away from the self-closing hook 2. By clamping the claw 7 onto the tower profile at the tower end, the stability of the connection between the end of the insulating ladder body 1 and the tower can be improved. The translation adjustment mechanism 6 can adjust the position of the claw 7 to adapt to the actual position of the tower profile.

[0032] In some embodiments, as Figure 2 As shown, the translation adjustment mechanism 6 has a translation screw 61 rotatably mounted on the top of the insulating ladder body 1 via two bearings 65. A translation seat 63 is threaded onto the translation screw 61. A side plate 64 is fixedly mounted on one side of the translation seat 63, and a pawl 7 is fixedly mounted on the end of the side plate 64. A limit guide rod 62 is fixedly mounted between the two bearings 65. The translation seat 63 is slidably connected to the limit guide rod 62. The limit guide rod 62 provides sliding positioning for the translation seat 63, so that when the translation screw 61 is rotated, the threaded structure between the translation screw 61 and the translation seat 63 engages, driving the translation seat 63 to slide along the limit guide rod 62, thereby realizing the position adjustment of the fixed pawl 7 below the translation seat 63.

[0033] In some embodiments, as Figure 3As shown, reinforcing rods 4 are rotatably connected to both sides of the end of the insulated ladder body 1 near the self-closing hook 2. The end of the reinforcing rod 4 away from the insulated ladder body 1 has an external thread section 41. An internal threaded connecting seat 51 is connected to the outer thread of the external thread section 41. A hanging plate 5 is fixedly installed at one end of the internal threaded connecting seat 51. The end of the reinforcing rod 4 is hung on the profile of the iron tower through the hanging plate 5, which can further improve the stability of the insulated ladder after installation and ensure the safe and stable passage of operators.

[0034] In some embodiments, a support spring 29 is provided between the baffle 28 and the J-shaped hook 21. One end of the support spring 29 is fixedly connected to the baffle 28, and the other end of the support spring 29 is fixedly connected to one side of the J-shaped hook 21. The support spring 29 provides elastic support to one side of the baffle 28. When the sleeve 24 is pulled down, when the retaining ring 26 moves below the locking block 27, the support spring 29 can push the baffle 28 to reset, so that the locking block 27 is locked back to the top of the retaining ring 26, and the opening of the J-shaped hook 21 remains open.

[0035] In some embodiments, an upper limit edge 221 corresponding to the upper end of the sleeve 24 is fixedly provided in the middle of the upper vertical section 22, and the interior of the upper end of the sleeve 24 matches the lower end of the upper vertical section 22.

[0036] The various embodiments of the present invention have now been described in detail. To avoid obscuring the concept of the invention, some details known in the art have not been described. Those skilled in the art will fully understand how to implement the technical solutions disclosed herein based on the above description.

[0037] The embodiments described above only illustrate some implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A closed-hook insulated horizontal ladder, characterized in that: The system includes an insulated ladder body and a self-closing hook. A height adjustment mechanism is provided on one end of the self-closing hook near the insulated ladder body. The height adjustment mechanism is rotatably connected to one end of the insulated ladder body. An opening mechanism is provided on the self-closing hook. The height adjustment mechanism has a horizontal plate; The self-closing hook has a J-shaped hook, one end of which is fixedly connected to the top of the horizontal plate, and the other end of which is provided with an upper vertical section. A lower vertical section is vertically fixedly provided on the horizontal plate, and a sleeve is slidably provided on the outer side of the lower vertical section. A spring is fitted on the outer side of the lower vertical section between the lower end of the sleeve and the horizontal plate. A retaining ring is fixedly provided on the outer side of the lower end of the sleeve. A baffle is connected at the top of the horizontal plate, and a locking block for stopping the retaining ring is provided on the baffle. The upper end of the baffle extends between the upper vertical section and the lower vertical section. The opening mechanism has opening guide rods evenly arranged at the bottom of the retaining ring. A pull plate is fixedly arranged on one end of the opening guide rod away from the retaining ring. A pull ring is fixedly arranged on the pull plate, and a pull rope is connected to the pull ring.

2. The closed hook insulated ladder according to claim 1, characterized in that: The end of the height adjustment mechanism opposite to the self-closing hook is rotatably connected to the insulated ladder body. The height adjustment mechanism is used to adjust the distance between the self-closing hook and the insulated ladder body.

3. The closed hook insulated ladder according to claim 2, characterized in that: The height adjustment mechanism has a portal frame that is slidably connected to the cross plate. The two ends of the portal frame are rotatably connected to the ends of the insulated ladder body. A height adjustment screw is rotatably provided on the side of the cross plate near the portal frame. The height adjustment screw is threadedly connected to the portal frame. The self-closing hook is fixedly provided on the side of the cross plate away from the insulated ladder body. A handle is fixedly provided on the end of the height adjustment screw away from the cross plate.

4. The closed hook insulated ladder according to claim 3, characterized in that: Two sliding rods, parallel to the height adjusting screw, are symmetrically arranged on the side of the horizontal plate near the portal frame. The sliding rods are slidably connected to the portal frame perpendicularly.

5. The closed hook insulated ladder according to claim 3, characterized in that: The gantry frame is fixedly equipped with a rope guide wheel corresponding to the pull rope.

6. The closed hook insulated ladder according to claim 1, characterized in that: The insulating ladder body has symmetrically arranged claws and a translation adjustment mechanism that drives the claws to move along the insulating ladder body below the end opposite to the self-closing hook.

7. The closed hook insulated ladder according to claim 6, characterized in that: The translation adjustment mechanism has a translation screw rod rotatably mounted on the top of the insulating ladder body via two bearings. A translation seat is threaded onto the translation screw rod. A side plate is fixedly provided on one side of the translation seat. The pawl is fixedly provided at the end of the side plate. A limit guide rod is fixedly provided between the two bearings. The translation seat is slidably connected to the limit guide rod.

8. The closed hook insulated ladder according to claim 1, characterized in that: The insulating ladder body has reinforcing rods rotatably connected to both sides of the end near the self-closing hook. The end of the reinforcing rod opposite to the insulating ladder body has an external thread section. An internal threaded connecting seat is connected to the outer thread of the external thread section. A hanging plate is fixedly installed at one end of the internal threaded connecting seat.

9. The closed hook insulated ladder according to claim 1, characterized in that: A support spring is provided between the baffle and the J-shaped hook. One end of the support spring is fixedly connected to the baffle, and the other end of the support spring is fixedly connected to one side of the J-shaped hook.

10. The closed hook insulated ladder according to claim 1, characterized in that: The upper vertical section has an upper limit edge fixedly provided in the middle, corresponding to the upper end of the sleeve, and the interior of the upper end of the sleeve matches the lower end of the upper vertical section.

Images