Adjustable tool for assisting in entering and exiting of strain insulator

Abstract

The adjustable tool comprises a front fixing plate, a rear fixing plate, a front steering head, a rear steering head, a sleeve, a threaded rod and an adjusting handle, the two front and rear fixing plates are connected with the two front and rear steering heads respectively in a sliding mode, the front steering head is connected with the sleeve in a sliding mode, the rear steering head is connected with the adjusting handle in a sliding mode, and the threaded rod is connected with the adjusting handle in a sliding mode. The adjusting handle is slidably connected with the threaded rod, the sleeve is slidably connected with the threaded rod, during use, the front fixing assembly and the rear fixing assembly can be fixed to a five-eye yoke plate connected with a strain insulator and a plate body of a cross arm tower material part respectively, then the sleeve is rotated, fixing can be firm, the device is simple in structure and convenient to assemble and disassemble, an additionally-arranged connecting structure is convenient to install and disassemble, and use is convenient. Therefore, personal safety of operators is guaranteed, operation safety and labor efficiency are improved, complex operation is changed into simple operation, operation time is greatly shortened, and safe and stable operation of lines is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of power maintenance auxiliary tools, in particular to an adjustable tool for assisting in and out of a tension insulator. Background Art

[0002] In recent years, the demand for electricity has greatly increased, and the 220kV transmission line as an ultra-high voltage can no longer meet the requirements, and 500KV, 800KV and even 1000kV ultra-high voltage transmission lines have appeared. The 500KV, 800KV and even 1000kV ultra-high voltage transmission lines use 4-8 split conductors, and their transmission lines use 2-4 strings of insulators respectively, and the weight is sharply increased compared with the previous 220kV transmission lines. For example, the 500KV ultra-high voltage transmission line uses 2-4 strings, 28-31 pieces / string, and a single weight of 8KG / piece insulators, the 800KV ultra-high voltage transmission line uses 3-4 strings, 78 pieces / string, and a single weight of 28-30KG / piece insulators, and the 1000KV ultra-high voltage transmission line uses 3-4 strings, 5, 60 pieces / string, and a single weight of more than 20KG / piece insulators, and the total weight increases sharply. This puts higher demands on the power supply reliability, live working, and live replacement of insulator strings of UHV transmission lines.

[0003] For example, in the past, when replacing the tension insulator strings of a 220kV transmission line, because they used 2-4 strings, 28-31 pieces / string, and 8KG / piece of insulators, when replacing the insulator strings under power, the insulator strings could be easily loosened by using a motorized capstan, so that they slowly fell off and drooped to the ground, and then reset after the insulator strings were repaired or replaced.

[0004] As mentioned above, as the transmission lines are gradually developed and improved, the weight of the tension insulator strings on them becomes heavier and cannot be loosened by manpower. Even if a motorized winch is used, the operation is inconvenient and laborious. When replacing the tension insulator strings, two or three connecting plates must be used to connect multiple strings of insulator strings with a total weight of several tons for a second time before loosening and replacing them. Therefore, higher requirements are placed on the connection of the connecting plates, which must have a simple structure and be easy to assemble and disassemble. In addition, due to the limitations of existing production specifications, usage habits, and manufacturing cost requirements, the existing connecting plates or clamps used as the main connecting components for live replacement of insulator strings are standardized isosceles triangles or isosceles trapezoids with hypotenuses, which makes the operation of the tension insulator strings unstable and easy to slip out, making it difficult to easily replace the 1000KV tension insulator strings. In severe cases, it may even lead to safety accidents. Therefore, a tool that can assist operators in stabilizing the working platform is needed.

[0005] At present, all new tension towers are equipped with adjustment plates to extend the distance between the insulator and the tower cross arm. Due to the connection structure between the cross arm and the tension insulator, the tower climbing workers are in a complex and inconvenient process and are also very dangerous when entering and exiting the tower cross arm and the tension insulator. The current technical design and engineering application lack special tools for simply temporarily adding connecting components between the cross arm and the tension insulator. The tower climbing workers are prone to lose balance when they rely on a single string of connecting hardware to enter and exit the tower cross arm and the tension insulator. As disclosed in the publication number CN206099155U, an auxiliary tool for replacing tension insulators during a power outage is disclosed, comprising two support rods, the two support rods are arranged in parallel, a plurality of cross bars perpendicular to the support rods are fixed between the two support rods, the cross bars are evenly spaced, both ends of the support rods are retractable rods, a cross bar is connected between the ends of the retractable rods, one cross bar between the retractable rods is connected with a hook for hanging on the conductor, the hook is rotatably connected to the cross bar, the other cross bar between the retractable rods is fixed on the cross arm, the auxiliary tool is flush with the insulator string, the staff sits on the auxiliary tool to operate, but its on-site adjustment device is relatively complicated and difficult; or as disclosed in the publication number CN101174761B Disclosed are a method for live replacement of a tension insulator string of a high-voltage transmission line and a two-plate device. The method uses special tools such as end wing-shaped clamps and insulating pull plates to first loosen the insulator string and utilize pulleys and screw rods on the cross arm side and the conductor side to completely detach both ends of the insulator string. Finally, with the help of the pulley on the ground wire support, the porcelain bottle string is rotated from a horizontal state to a vertical state. The two-plate device for live replacement of the tension insulator string of a high-voltage transmission line comprises two wing-shaped clamps and two screw rods, and also comprises two pairs of insulating pull plates. The ends of the two pairs of insulating pull plates are respectively connected to the two wings of the wing-shaped clamps, and the other ends are respectively connected to a screw. The other ends of the two screw rods are respectively connected to the two wings of the other wing-shaped clamps. The structure is relatively large, which will generate additional burden for the operators.

[0006] The technical problem to be solved by the invention is that in view of the deficiencies in the above-mentioned prior art, an adjustable tool for assisting the entry and exit of tension insulators has been developed. The tool has a simple structure and is convenient for assembly and disassembly. The additional connection structure not only ensures the personal safety of the operators, but also improves the operation safety and labor efficiency, thereby turning complex operations into simpler operations, greatly shortening the equipotential operation time, and ensuring the safe operation of the line. Summary of the invention

[0007] The purpose of the present invention is to provide an adjustable tool for assisting in entering and exiting a tension insulator. By designing a front steering head and a rear steering head respectively connected to the bushing and the adjusting handle, the front fixing plate and the rear fixing assembly can be flexibly rotated, and the threaded rod can be rotated in and out of the bushing. The length of the device can be accurately adjusted so that the operator can flexibly carry out the operation according to the actual situation on site, thus solving the problem that the device is not flexible enough when using traditional tools and it is difficult to make timely changes according to the needs of the site, making the operation difficult.

[0008] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: an adjustable tool for assisting the entry and exit of a tension insulator, comprising a front fixed plate and a rear fixed plate, the front fixed plate being slidably connected to a front steering head, the bottom end of the front steering head being slidably connected to a sleeve, the bottom of the sleeve being slidably connected to a threaded rod, the threaded rod being fixedly connected to an adjustment handle, the end of the adjustment handle away from the threaded rod being slidably connected to a rear steering head, and the rear steering head being slidably connected to the rear fixed plate.

[0009] Preferably, the front fixing plate and the front steering head are slidably connected via a first bolt, and the front fixing plate can be horizontally rotated with the bolt as an axis.

[0010] Preferably, a threaded column is provided at the rear end of the front steering head.

[0011] Preferably, a threaded hole is provided at the head end of the sleeve, and the threaded hole matches with the threaded column at the tail end of the front steering head.

[0012] Preferably, the tail end of the sleeve is open and the inner wall of the opening is a threaded structure.

[0013] Preferably, the threaded rod is provided with a thread that matches the threaded structure on the inner wall of the sleeve opening, and the overall length of the device can be controlled by rotating the sleeve.

[0014] Preferably, the bottom of the adjusting handle cylinder is fixedly connected with a bolt, and the cylinder is provided with anti-slip patterns.

[0015] Preferably, a threaded column is provided at the front end of the front steering head.

[0016] Preferably, the second fixing rod and the rear steering head are slidably connected via a second bolt, and the second fixing rod can rotate horizontally with the bolt as an axis.

[0017] Preferably, the surface of the sleeve is provided with anti-slip textures for easy rotation.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) The present invention can temporarily increase the number of connection structures between the cross arm and the tension insulator by designing the front fixing plate and the rear fixing plate to hook between the cross arm and the tension insulator, thereby improving the body balance of the tower climbing workers in the process of entering and exiting the tower cross arm and the tension insulator, greatly ensuring the personal safety of the workers, improving the working efficiency, and ensuring the safe and stable operation of the power grid;

[0020] (2) The present invention makes it simple and easy to change the total length of the device by designing the casing and threaded rod structure, thereby increasing the adaptability of the device and being applicable to the temporary addition of connection structures to all transmission line tension towers;

[0021] (3) The present invention is designed to connect the front steering head to the front fixing plate through bolts, so that the front fixing plate connected to the front steering head can rotate horizontally with the bolts as the axis, which greatly increases the adaptability and operability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of a three-dimensional structure of a specific embodiment of the present invention;

[0023] Figure 2 for Figure 1 A schematic diagram of the structure in a top-down direction;

[0024] Figure 3 It is a side structural schematic diagram of a specific embodiment of the present invention;

[0025] Figure 4 for Figure 2 A schematic diagram of the enlarged structure at point A;

[0026] Figure 5 for Figure 2 A schematic diagram of the enlarged structure at B;

[0027] Figure 6 for Figure 3 A schematic diagram of the enlarged structure at C;

[0028] Figure 7 for Figure 3 Enlarged structural diagram at D. Description of the drawings:

[0030] 1. Front fixing plate; 2. Front steering head; 3. Casing; 4. Threaded rod; 5. Adjustment handle; 6. Rear steering head; 7. Rear fixing assembly;

[0031] 11. A first threaded hole;

[0032] 21. First bolt;

[0033] 61. Second bolt;

[0034] 71. Second threaded hole. DETAILED DESCRIPTION

[0035] 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.

[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 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.

[0037] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0038] 1. The present invention is composed of the following main parts and components:

[0039] It consists of a front fixing plate, a front steering head, a sleeve, a threaded rod, an adjustment handle, a rear steering head, and a rear fixing assembly;

[0040] 2. The front fixing plate has a bent opening formed by a first fixing plate at the head end of the fixing rod, and a first threaded hole at the tail end of the fixing rod. During use, the first fixing plate at the head end needs to buckle the five-hole connecting plate connected to the tension insulator;

[0041] 3. The front end of the front steering head is open and has two screw holes, and the rear end is a disc with one screw hole. The open end of the front steering head is connected to the rear end of the front fixing plate by bolts, so that the front fixing plate connected to the front fixing plate can rotate horizontally with the connecting bolts as the axis, increasing the adaptability and operability of the device;

[0042] 4. The first end of the sleeve is cylindrical and has a screw hole, and the tail end is open and the inner wall of the opening is a threaded structure. The first end is connected to the tail end of the front steering head by bolts, so that the front steering head can rotate axially with the connecting bolt as the axis;

[0043] 5. The threaded rod is connected to the sleeve by a threaded structure, so that the threaded rod can reciprocate in and out of the tail end opening of the sleeve by axial rotation;

[0044] 6. The head and tail ends of the adjustment handle are both cylindrical, and the bottom of the tail end cylinder is fixedly connected to the outer wall of the head end cylinder. The top of the head end cylinder of the adjustment handle is fixedly connected to one end of the threaded rod, so that when the tail end of the adjustment handle rotates around the head end, it can drive the threaded rod to rotate axially. The bottom of the head end cylinder of the adjustment handle is fixedly connected with a bolt;

[0045] 7. The front end of the rear steering head is open and has two screw holes, and the rear end is a disc with one screw hole. The rear end of the rear steering head is connected to the bottom of the cylinder at the front end of the adjustment handle by bolts;

[0046] 8. The first end of the second fixing rod of the rear fixing plate is provided with a bending opening of a guiding inclined plane, and the tail end of the second fixing rod is provided with a second threaded hole. The opening angle of the first end is not parallel to the direction of the tail end, but has a certain angle. The tail end of the rear fixing plate is connected to the first end of the rear steering head by bolts. During use, its first end needs to buckle the plate body of the cross arm tower material component;

[0047] The above are the structural connections and movement principles of the main components;

[0048] The installation steps for tower climbers before entering the tension insulator from the cross arm are as follows:

[0049] First, adjust the device casing to a longer state, and the open end of the rear fixing plate buckles the plate body of the cross-arm tower material component. Adjust the tool as a whole to make the open end of the front fixing plate larger, so that it can easily approach and buckle the five-hole connecting plate connected to the tension insulator. Turn the adjustment handle to rotate the threaded rod into the casing until the connection between the front fixing plate and the five-hole connecting plate, and the rear fixing plate and the cross-arm tower material are not loose. Only then can the tower climbers enter the tension insulator from the cross-arm.

[0050] The disassembly steps for tower climbers after returning to the crossarm from the tension insulator are as follows:

[0051] After the tower climber returns to the crossarm from the tension insulator, he turns the adjusting handle to rotate the threaded rod out of the bushing until the head end of the front fixing plate is completely separated from the five-eye connecting plate, disengages the two, and then tightens the device to complete the disassembly of the tool.

[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. An adjustable tool for assisting in and out of a tension insulator, comprising a front fixing plate (1), characterized in that: A first threaded hole (11) is provided at the bottom of the front fixing plate (1), and a first bolt (21) is provided on the front steering head (2). The first bolt (21) of the front steering head (2) passes through the first threaded hole (11) to slidably connect the front steering head (6) and the first fixing rod (12). The rear end of the front steering head (2) is slidably connected to the sleeve (3), and the sleeve (3) is slidably connected to the threaded rod (4). The other end of the threaded rod (4) is fixedly connected to the adjustment handle (5), and the end of the adjustment handle (5) away from the threaded rod is fixedly connected to the rear steering head (6). A second bolt (61) is provided at the bottom end of the rear steering head (6), and the rear steering head (6) is slidably connected to the rear fixing plate (7). A second threaded hole (71) is provided at the bottom of the rear fixing plate (7), and the second bolt (61) of the rear steering head (6) passes through the second threaded hole (71) to slidably connect the rear steering head (6) and the rear fixing plate (7).

2. The adjustable tool for assisting in and out of a tension insulator according to claim 1, characterized in that: The front fixing plate (1) is in the shape of an integrally formed right-angle hook, and the right-angle hook is relatively large, with a length extending to 1 / 4 of the fixing plate body.

3. The adjustable tool for assisting in and out of a tension insulator according to claim 2, characterized in that: The rear fixing plate (7) is provided with an acute angle bend in the middle, and an integrally formed right-angle hook is provided at the head end. The right-angle hook is relatively small, and its length extends to 1 / 4 of the fixing plate body.

4. The adjustable tool for assisting in and out of a tension insulator according to claim 3, characterized in that: The front fixing plate (1) and the rear fixing plate (7) on the front steering head (2) and the rear steering head (6) can be connected with bolts as axes to rotate horizontally.

5. The adjustable tool for assisting in and out of a tension insulator according to claim 4, characterized in that: The sleeve (3) is made of epoxy resin.

6. The adjustable tool for assisting in and out of a tension insulator according to claim 5, characterized in that: The sleeve (3) is provided with anti-slip patterns.

7. The adjustable tool for assisting in and out of a tension insulator according to claim 6, characterized in that: The adjustment handle (5) is provided with anti-slip textures.

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