Special dismounting tool for tower grounding downlead bolt

Abstract

The invention relates to the technical field of electric power engineering, in particular to a special dismounting tool for a tower grounding downlead bolt, which comprises an electric wrench and a static end support, and the static end support is mounted on the electric wrench; a sliding mechanism is arranged on the static end support, and a movable end support is installed at the end of the sliding mechanism. A sleeve is arranged at the driving end of the electric wrench, a quick replacement mechanism is arranged on the movable end support, a bolt positioning hole coaxially matched with the sleeve is formed in the quick replacement mechanism, the movable end support is controlled to be away from the sleeve through a sliding mechanism, and the distance between the movable end support and the sleeve is increased. And then the two ends of the grounding down lead bolt needing to be disassembled are arranged in the sleeve and the bolt positioning hole correspondingly, at the moment, the sleeve is controlled by the electric wrench to rotate, the bolt is disassembled and separated, operation can be completed only through one-hand operation, operation can be conveniently conducted through one hand, and operation is easy and convenient.

Description

Technical Field

[0001] This invention relates to the field of power engineering technology, and in particular to a special tool for disassembling and assembling grounding down conductor bolts on power poles. Background Technology

[0002] The grounding resistance of transmission towers needs to be measured regularly. Before the measurement, the connecting bolts of the grounding down conductor need to be disassembled and reassembled. The traditional method is to manually operate with two wrenches, which is not only time-consuming and labor-intensive, but also inefficient. In addition, the large number of power towers results in a huge workload for the disassembly and assembly of such bolts, consuming a lot of manpower. Even when using ordinary power tools, manual wrenches are still required for positioning, which can easily lead to over-tightening and damage to bolts or components, and also poses a safety hazard of "hitting hands" during operation. Moreover, such tools lack adaptable adjustment brackets, making it difficult to meet the usage requirements of tower operation scenarios. Furthermore, the grounding down conductor connecting bolts used in transmission towers are of various specifications, and traditional tools cannot be flexibly adapted, further restricting the work efficiency. Therefore, a special disassembly and assembly tool for tower grounding down conductor bolts is proposed. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is that a wrench is required for positioning when disassembling traditional bolts.

[0004] The above-mentioned technical problems are solved by the following technical solution: The present invention proposes a special disassembly and assembly tool for tower grounding down conductor bolts, including an electric wrench and a stationary end support, wherein the stationary end support is installed on the electric wrench; A sliding mechanism is provided on the stationary end support, and a moving end support is installed at the end of the sliding mechanism; The electric wrench has a sleeve at the drive end and a quick-change mechanism on the moving end support. The quick-change mechanism has a bolt positioning hole that is coaxial with the sleeve.

[0005] In a preferred embodiment of the special disassembly and assembly tool for tower grounding down conductor bolts described in this invention: the sliding mechanism includes two symmetrically distributed hollow rods; The hollow rod slides through the stationary end support, and the end of the hollow rod is fixedly connected to the moving end support. The hollow rod is provided with a first fixing pin at one end near the moving end support, and a second fixing pin is provided on the stationary end support. A groove is provided on one side of the hollow rod near the stationary end support for the second fixing pin to slide. The outer walls of both the No. 1 and No. 2 fixing pins are fitted with spring connectors, and a tension spring is fixedly connected between the two spring connectors.

[0006] In a preferred embodiment of the special disassembly and assembly tool for the grounding down conductor bolt of the tower described in this invention: a sliding support rod is installed on the top of the moving end support, the sliding support rod slides through the stationary end support, and a spacer is fixedly installed at the end of the sliding support rod.

[0007] In a preferred embodiment of the special disassembly and assembly tool for the grounding down conductor bolt of the pole described in this invention: the two hollow rods and the sliding support rod are arranged in a triangular distribution.

[0008] In a preferred embodiment of the special disassembly and assembly tool for tower grounding down conductor bolts described in this invention: the quick replacement mechanism includes a plug-in frame and a limiting frame connected together; Two symmetrically distributed limit blocks are slidably installed on the limit frame. A conical lifting block is vertically slidably installed in the middle of the limit frame via a slider. Both ends of the conical lifting block are hinged to connecting rods. The end of the connecting rod away from the conical lifting block is hinged to the inner side of the corresponding limit block. The inner side of the moving end support is provided with a limiting groove that engages with the limiting block.

[0009] In a preferred embodiment of the special disassembly and assembly tool for the grounding down conductor bolt of the pole and tower described in this invention: the plug frame is slidably inserted into the moving end support, the limiting frame is installed at the bottom end of the plug frame, and the bolt positioning hole is opened in the middle of the plug frame.

[0010] In a preferred embodiment of the special disassembly and assembly tool for the grounding lead bolt of the tower described in this invention: a base is fixedly installed at the bottom center of the limiting frame, and a spline shaft is slidably installed on the base via a spline. A fixing block is installed at one end of the flower shaft, and a pull rod is hinged to the top of the fixing block. The end of the pull rod away from the fixing block is hinged to the bottom of the conical lifting block.

[0011] In a preferred embodiment of the special disassembly and assembly tool for tower grounding down conductor bolts described in this invention: a button is fixedly installed at the other end of the flower shaft, and the button slides through one side of the limiting frame; A return spring is fitted on the outer wall of the flower shaft, and the two ends of the return spring are fixedly connected to the base and the button, respectively.

[0012] In a preferred embodiment of the special disassembly and assembly tool for tower grounding down conductor bolts described in this invention: the end of the limiting block has a trapezoidal structure, with a flat bottom and an upwardly inclined surface at the top.

[0013] In a preferred embodiment of the special disassembly and assembly tool for the grounding down conductor bolt of the pole and tower described in this invention: both the hollow pole and the sliding support are made of steel, and the outer wall of the end of both near the moving end support is threaded, and is fixedly connected to the moving end support through the thread.

[0014] The beneficial effects of this invention are as follows: Through the tension spring preload design of the sliding mechanism, combined with the triangular stable support structure of the hollow rod and sliding support rod, the automatic and precise fitting and alignment of the nut and sleeve, and the bolt and positioning hole can be achieved without manual assistance in positioning; it avoids damage to bolts or components caused by misalignment, slippage, or overtightening during operation, and eliminates the safety hazards of traditional tools; at the same time, it greatly reduces manpower input, eliminates the need for two people or additional wrenches, significantly reduces work intensity, and improves overall disassembly and assembly efficiency and operational safety; In addition, thanks to the modular design of the quick-change mechanism, the limit block can be driven to retract and unlock synchronously simply by pressing a button. The plug-in frame with different bolt positioning holes can be quickly plugged in and switched, and it can automatically lock after the plug-in frame is in place, without the need for complicated tools. This solves the problem that traditional tools cannot adapt to the diverse bolt specifications of towers, making it more adaptable and the switching process more efficient and convenient, further improving work efficiency. The electric wrench, stationary end support, sliding mechanism, and moving end support are optimized into a C-shaped structure, which not only adapts to the limited space constraints of tower operations but also meets ergonomic grip requirements. Operators can complete the entire process of bolt fitting, starting, and disassembly with one hand, without complicated operating steps, greatly reducing the difficulty of working at heights or in confined spaces, saving time and effort, and further improving the practicality and efficiency of operations. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention.

[0016] Figure 1 This is a schematic diagram of the overall front structure of the present invention; Figure 2 This is a schematic diagram of the sliding mechanism structure in this invention; Figure 3 This is a schematic diagram of the split structure of the sliding mechanism in this invention; Figure 4 This is a schematic diagram of the spring connector and tension spring in this invention; Figure 5 This is a schematic diagram of the structure of the plug-in frame, the limiting frame, and the limiting block in this invention; Figure 6 This is a schematic diagram of the side-section structure of the quick-change mechanism in this invention; Figure 7 This is a schematic diagram of the side-section structure when the limiting block is unlocked in this invention; Figure 8 This is a schematic diagram of the structure of the flower shaft and the fixing block in this invention; Figure 9 This is a schematic diagram of the limiting frame in this invention; Figure 10 for Figure 3 Enlarged structural diagram at point A; Figure 11 for Figure 6 Enlarged structural diagram at point B; Figure 12 for Figure 7 Enlarged schematic diagram of the structure at point C.

[0017] In the diagram: 1. Electric wrench; 2. Stationary end support; 3. Sliding mechanism; 301. Hollow rod; 302. First fixing pin; 303. Second fixing pin; 304. Slide groove; 305. Spring connector; 306. Tension spring; 307. Sliding support rod; 308. Spacer block; 4. Moving end support; 5. Sleeve; 6. Quick change mechanism; 601. Plug-in frame; 602. Limit frame; 603. Limit block; 604. Conical lifting block; 605. Connecting rod; 606. Pull rod; 607. Base; 608. Flower shaft; 609. Fixing block; 610. Button; 611. Return spring; 612. Limit groove; 7. Bolt positioning hole. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0019] The terminology used in this invention is that which is currently widely used in the art in consideration of the function of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new technology in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terms used in this specification should not be construed as simple names, but rather based on their meanings and the overall description of the invention.

[0020] Reference Figures 1-12 This embodiment provides a special tool for disassembling and assembling tower grounding down conductor bolts, including an electric wrench 1 and a stationary end support 2. The stationary end support 2 is installed on the electric wrench 1; the stationary end support 2 is securely installed on the outer wall of the electric wrench 1 by bolts.

[0021] A sliding mechanism 3 is provided on the stationary end support 2, and a moving end support 4 is installed at the end of the sliding mechanism 3; The electric wrench 1 has a sleeve 5 on the drive end and a quick-change mechanism 6 on the moving end support 4. The quick-change mechanism 6 has a bolt positioning hole 7 that is coaxial with the sleeve 5.

[0022] In use, the sliding mechanism 3 controls the moving end support 4 to move away from the sleeve 5, increasing the distance between the two. Then, the two ends of the grounding lead bolt to be disassembled are placed in the sleeve 5 and the bolt positioning hole 7 respectively. At this time, the sleeve 5 is rotated by the electric wrench 1. Since the bolt positioning hole 7 cannot rotate, a relative rotation occurs between the bolt positioning hole 7 and the sleeve 5, allowing the bolt to be disassembled and separated. The operation can be completed with only one hand, making it easy to operate with one hand and simple and convenient.

[0023] The sliding mechanism 3 includes two symmetrically distributed hollow rods 301; the hollow rods 301 slide through the stationary end support 2, and the ends of the hollow rods 301 are fixedly connected to the moving end support 4; a first fixing pin 302 is provided at one end of the hollow rod 301 near the moving end support 4, and a second fixing pin 303 is correspondingly provided on the stationary end support 2; a groove 304 for the second fixing pin 303 to slide is opened on one side of the hollow rod 301 near the stationary end support 2; spring joints 305 are sleeved on the outer walls of both the first fixing pin 302 and the second fixing pin 303, and a tension spring 306 is fixedly connected between the two spring joints 305.

[0024] It should be noted that the elastic force of the tension spring 306 can make the bolt positioning hole 7 tend to move closer to the sleeve 5. Therefore, when the bolt is disassembled, the tension spring 306 can always keep the bolt positioning hole 7 fitted on the end of the bolt, automatically adjust the spacing according to the position of the bolt and nut being disassembled, and keep the nut pressed on the bolt to prevent it from falling off.

[0025] By adopting the above technical solution, the tension spring 306 provides a continuous reset preload to the moving end support 4, while maintaining axial pressure, ensuring that the sleeve 5 and the bolt positioning hole 7 are respectively engaged with the bolt and nut during disassembly and assembly, thereby achieving automatic disassembly.

[0026] A sliding support rod 307 is installed on the top of the moving end support 4. The sliding support rod 307 slides through the stationary end support 2, and a spacer 308 is fixedly installed at the end of the sliding support rod 307. This allows the sliding support rod 307 to assist in supporting the moving end support 4 and improve stability during the sliding process. The spacer 308 can prevent the sliding support rod 307 from detaching from the stationary end support 2.

[0027] The two hollow rods 301 and the sliding support rod 307 are arranged in a triangle. By utilizing the stability of the triangular structure, the structural support stiffness can be further improved, and structural deformation can be avoided.

[0028] Reference Figures 1-12As an optional embodiment: the quick-change mechanism 6 includes a plug-in frame 601 and a limiting frame 602 connected to each other; two symmetrically distributed limiting blocks 603 are slidably installed on the limiting frame 602; a conical lifting block 604 is vertically slidably installed in the middle of the limiting frame 602 via a slider; both ends of the conical lifting block 604 are hinged to connecting rods 605; the end of the connecting rod 605 away from the conical lifting block 604 is hinged to the inner side of the corresponding limiting block 603; the inner side of the moving end support 4 is provided with a limiting groove 612 that engages with the limiting block 603.

[0029] Specifically, the plug-in frame 601 is slidably inserted into the moving end support 4, the limiting frame 602 is installed at the bottom end of the plug-in frame 601, and the bolt positioning hole 7 is opened in the middle of the plug-in frame 601.

[0030] When in use, by pulling the conical lifting block 604, the two limiting blocks 603 can be opened and closed synchronously, thereby controlling whether they are stuck in the limiting groove 612, which makes it easy to disassemble the entire plug frame 601.

[0031] A base 607 is fixedly installed at the bottom center of the limiting frame 602, and a spline shaft 608 is slidably installed on the base 607 via a spline. A fixing block 609 is installed at one end of the spline shaft 608, and a pull rod 606 is hinged to the top of the fixing block 609. The end of the pull rod 606 away from the fixing block 609 is hinged to the bottom of the conical lifting block 604.

[0032] During the sliding process, the flower shaft 608 can pull the conical lifting block 604 up and down through the pull rod 606, thereby controlling the limit block 603 to open and close synchronously.

[0033] A button 610 is fixedly installed at the other end of the flower shaft 608. The button 610 slides through one side of the limit frame 602. The flower shaft 608 can be easily driven to slide by pressing the button 610, which is convenient for operators to use.

[0034] A reset spring 611 is fitted on the outer wall of the flower shaft 608. The two ends of the reset spring 611 are fixedly connected to the base 607 and the button 610, respectively. The elastic force of the reset spring 611 can make the button 610 have a tendency to slide out of the limit frame 602. After pressing the button 610, the elastic force of the reset spring 611 can make the button 610 reset.

[0035] The end of the limiting block 603 has a trapezoidal structure with a flat bottom and an upward sloping top. The sloping structure can guide the limiting block 603 to retract when the plug-in frame 601 is inserted into the moving end support 4. The flat structure engages with the limiting groove 612 after the limiting block 603 is in place, thereby realizing the rapid positioning and locking of the plug-in frame 601.

[0036] Both the hollow rod 301 and the sliding support rod 307 are made of steel, and the outer wall of the end of both near the moving end support 4 is threaded. They are fixedly connected to the moving end support 4 through the thread. The use of steel can ensure the structural strength and wear resistance of the hollow rod 301 and the sliding support rod 307. The threaded connection facilitates the disassembly and maintenance of the moving end support 4.

[0037] Working principle: In actual use, according to the specifications of the bolts to be disassembled and assembled, select the plug-in frame 601 with the corresponding bolt positioning hole 7. Then, when the plug-in frame 601 is inserted into the mounting position of the moving end support 4, the upward inclined surface of the end of the limiting block 603 will squeeze against the inner wall of the moving end support 4, forcing the two limiting blocks 603 to retract inward synchronously. The conical lifting block 604 moves downward accordingly. During the movement, the conical lifting block 604 drives the flower shaft 608, the fixing block 609 and the button 610 to move through the pull rod 606 and squeeze the return spring 611. When the plug-in frame 601 is fully inserted, the limiting block 603... 03 is precisely aligned with the limiting groove 612 on the inner side of the moving end support 4. The return spring 611 pushes the flower shaft 608 and the button 610 to reset. Then, according to the reverse steps above, the two limiting blocks 603 are pushed outward, so that the flat structure at the bottom of the limiting block 603 is tightly engaged with the limiting groove 612, realizing the quick positioning and locking of the plug frame 601. When disassembly is required, if it is necessary to replace the bolt positioning hole 7 of different specifications, simply press the button 610 to drive the flower shaft 608 to slide. According to the same steps above, the two limiting blocks 603 are driven to retract and disengage from the limiting groove 612, and the plug frame 601 can be easily pulled out to complete the replacement. The operation is convenient and efficient. The operator holds the disassembly tool and fits the sleeve 5 onto the end face of the nut to be disassembled, while simultaneously aligning the bolt positioning hole 7 with the corresponding bolt head. At this time, the tension spring 306 is in a pre-tightened state. A continuous reset pre-tightening force is applied to the moving end support 4 through the first fixing pin 302 and the spring connector 305, so that the moving end support 4 maintains axial pressure in the bolt direction, ensuring that the sleeve 5 and the nut end face, and the bolt positioning hole 7 and the bolt head are always tightly fitted. Then, after starting the electric wrench 1, the operator presets the target torque value through the tool's user interface. The torque sensor inside the electric wrench 1 monitors the actual torque applied to the bolt by the sleeve 5 in real time and feeds the signal back to the control unit. The control unit dynamically adjusts the power and speed of the motor through the drive circuit to achieve closed-loop torque control. During disassembly, the electric wrench 1 drives the sleeve 5 to rotate the nut. The axial pressure provided by the tension spring 306 ensures that there is no relative slippage between the bolt and the bolt positioning hole 7, and between the nut and the sleeve 5. After the bolts are removed and installed, release the control switch of the electric wrench 1. The tool torque output stops, and the operator removes the tool from the bolt. The tension spring 306 drives the moving end support 4 to return to its original position along the hollow rod 301. The limit block 603 remains engaged with the limit groove 612, ensuring that the plug frame 601 is firmly fixed. If it is necessary to store or change the bolt specifications later, press the button 610 again to unlock the plug frame 601 and complete the component disassembly or replacement. The whole process does not require complicated operation.

[0038] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A special tool for disassembling and assembling grounding lead bolts on power poles, characterized in that: It includes an electric wrench (1) and a stationary end support (2), wherein the stationary end support (2) is mounted on the electric wrench (1); A sliding mechanism (3) is provided on the stationary end support (2), and a moving end support (4) is installed at the end of the sliding mechanism (3). The electric wrench (1) has a sleeve (5) at the drive end and a quick-change mechanism (6) on the moving end support (4). The quick-change mechanism (6) has a bolt positioning hole (7) that is coaxial with the sleeve (5).

2. The special disassembly and assembly tool for tower grounding down conductor bolts according to claim 1, characterized in that: The sliding mechanism (3) includes two symmetrically distributed hollow rods (301); The hollow rod (301) slides through the stationary end support (2), and the end of the hollow rod (301) is fixedly connected to the moving end support (4); The hollow rod (301) is provided with a first fixing pin (302) at one end near the moving end support (4), and a second fixing pin (303) is provided on the stationary end support (2). A groove (304) for the second fixing pin (303) to slide is provided on one side of the hollow rod (301) near the stationary end support (2). The outer walls of the first fixing pin (302) and the second fixing pin (303) are both fitted with spring connectors (305), and a tension spring (306) is fixedly connected between the two spring connectors (305).

3. The special disassembly and assembly tool for tower grounding down conductor bolts according to claim 2, characterized in that: The top of the moving end support (4) is equipped with a sliding support rod (307), which slides through the stationary end support (2), and a partition block (308) is fixedly installed at the end of the sliding support rod (307).

4. The special disassembly and assembly tool for tower grounding down conductor bolts according to claim 3, characterized in that: The two hollow rods (301) and the sliding support rod (307) are arranged in a triangle.

5. The special disassembly and assembly tool for tower grounding down conductor bolts according to any one of claims 1 to 4, characterized in that: The quick-change mechanism (6) includes a plug-in frame (601) and a limiting frame (602) connected to each other. Two symmetrically distributed limiting blocks (603) are slidably installed on the limiting frame (602). A conical lifting block (604) is vertically slidably installed in the middle of the limiting frame (602) via a slider. Both ends of the conical lifting block (604) are hinged with connecting rods (605). The end of the connecting rod (605) away from the conical lifting block (604) is hinged to the inner side of the corresponding limiting block (603). The inner side of the moving end support (4) is provided with a limiting groove (612) that engages with the limiting block (603).

6. The special disassembly and assembly tool for tower grounding down conductor bolts according to claim 5, characterized in that: The plug frame (601) is slidably inserted into the moving end support (4), the limiting frame (602) is installed at the bottom end of the plug frame (601), and the bolt positioning hole (7) is opened in the middle of the plug frame (601).

7. The special disassembly and assembly tool for tower grounding down conductor bolts according to claim 6, characterized in that: A base (607) is fixedly installed at the bottom center of the limiting frame (602), and a spline shaft (608) is slidably installed on the base (607) via a spline. A fixing block (609) is installed at one end of the flower shaft (608), and a pull rod (606) is hinged to the top of the fixing block (609). The end of the pull rod (606) away from the fixing block (609) is hinged to the bottom of the conical lifting block (604).

8. The special disassembly and assembly tool for tower grounding down conductor bolts according to claim 7, characterized in that: A button (610) is fixedly installed at the other end of the flower shaft (608), and the button (610) slides through one side of the limiting frame (602); The outer wall of the flower shaft (608) is fitted with a return spring (611), and the two ends of the return spring (611) are fixedly connected to the base (607) and the button (610) respectively.

9. The special disassembly and assembly tool for tower grounding down conductor bolts according to claim 8, characterized in that: The end of the limiting block (603) has a trapezoidal structure, with a flat bottom and an upwardly inclined surface at the top.

10. The special disassembly and assembly tool for tower grounding down conductor bolts according to claim 4, characterized in that: Both the hollow rod (301) and the sliding support rod (307) are made of steel, and the outer wall of the two near the moving end support (4) is threaded, and they are fixedly connected to the moving end support (4) through the thread.

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