A new maintenance tool for substations

Abstract

The invention discloses a novel maintenance tool for a transformer substation, comprising: a positioning lock cylinder (1), a positioning lock core (2), a through-core base (3), a top cover (5), a lower sleeve (7), a ratchet socket wrench (8), an insulating rod (9), two sliding connecting rods (4) and four compression springs (6); the positioning lock cylinder (1) is provided with a limit plate (11) and a slide groove (12); the positioning lock core (2) is provided with a lock block (21) and a spring seat (22); the through-core base (3) is sleeved on the positioning lock core (2); the two sliding connecting rods (4) are provided with positioning clamping plates (41), and the top cover (5) is on the upper part thereof; the lower sleeve (7) is provided with a lower sliding connecting rod (71), and the lower sliding connecting rod (71) is sleeved on the sliding connecting rod (4); the ratchet socket wrench (8) comprises: an upper sleeve (81), an upper sliding connecting rod (82) and a slide groove force arm (83); the maintenance tool has the advantages of high working efficiency and good safety.

Description

Technical Field

[0001] The present disclosure relates to the technical field of substation maintenance, and in particular to a new maintenance tool for a substation. Background Art

[0002] Substations are an important and indispensable link and industrial facility in power transmission, involving a large number of high-voltage electrical equipment. Under the influence of harsh weather conditions, the contact plates of high-voltage electrical equipment are prone to rust and loosening, causing overheating of the contacts. If not repaired in time, line losses will increase, and in severe cases, the contact plates will be burned. The previous treatment method was mainly to shut down for maintenance, which has a long power outage time and complicated procedures. If live work is required, workers need to use special maintenance tools to ensure their lives.

[0003] At present, the existing special maintenance tool is a quick wrench with an insulating rod. When live maintenance is required, one worker holds the insulating rod and aims the quick wrench at the loose bolt, while another worker holds the insulating rod and continuously hits the quick wrench to complete the tightening of the loose bolt. This method is very difficult to align the bolt because the worker is a certain distance away from the fault point, and the quick wrench is very easy to detach from the bolt during the hitting process, and it is easy to accidentally touch other electrical equipment such as the insulator next to it, causing damage to the equipment, or even safety accidents, causing harm to the workers.

[0004] Therefore, how to solve the problems of inconvenient operation, low work efficiency, poor fastening effect and low safety of the current substation maintenance tools has become an urgent problem to be solved. Summary of the invention

[0005] In view of this, the present invention discloses a new maintenance tool for substations to at least solve the problems of inconvenient operation, low working efficiency, poor fastening effect, low safety, etc. of the current maintenance tools for substations.

[0006] The technical solution provided by the present invention is specifically a new maintenance tool for a substation, characterized in that it includes: a positioning lock cylinder 1, a positioning lock core 2, a through-hole base 3, a top cover 5, a lower sleeve 7, a ratchet socket wrench 8, an insulating rod 9, two sliding connecting rods 4 and four compression springs 6;

[0007] A limit plate 11 is provided on the upper part of the positioning lock cylinder 1, and a vertical slide groove 12 is provided on the side wall of the positioning lock cylinder 1 below the limit plate 11, and a locking groove 13 is provided at the lower end of the slide groove 12, which is connected with the slide groove 12 and extends along the circumference of the positioning lock cylinder 1.

[0008] The upper part of the positioning lock core 2 is nested in the positioning lock cylinder 1, and a lock block 21 cooperating with the slide groove 12 is arranged on the side wall of the positioning lock core 2, and a spring seat 22 is arranged in the middle of the positioning lock core 2. When the positioning lock core 2 moves up and down relative to the positioning lock cylinder 1, the lock block 21 moves up and down along the slide groove 12;

[0009] The through-core base 3 is fixedly sleeved on the lower part of the positioning lock core 2;

[0010] The two sliding links 4 are respectively located on both sides of the positioning lock cylinder 1, the positioning lock core 2 and the through-core base 3, and the lower ends of the two sliding links 4 are respectively fixedly connected to the through-core base 3, and a positioning card plate 41 is provided on each of the sliding links 4, and the positioning card plate 41 is fixedly connected to the positioning lock cylinder 1, and the position of the positioning card plate 41 corresponds to the position of the locking groove 13 in the positioning lock cylinder 1;

[0011] The top cover 5 is located above the positioning lock cylinder 1, and both sides of the top cover 5 are fixedly connected to the upper ends of the two sliding connecting rods 4 respectively;

[0012] The first compression spring 6 is sleeved on the outside of the positioning lock cylinder 1, located between the top cover 5 and the limiting plate 11, and one end of the compression spring 6 is against the lower surface of the top cover 5, and the other end is against the upper surface of the limiting plate 11. The second compression spring 6 is sleeved on the outside of the positioning lock cylinder 1, located between the limiting plate 11 and the positioning card plate 41, and one end of the compression spring 6 is against the lower surface of the limiting plate 11, and the other end is against the upper surface of the positioning card plate 41. The third compression spring 6 is sleeved on the The outside of the positioning lock cylinder 1 and the positioning lock core 2 is located between the positioning card plate 41 and the spring seat 22 in the positioning lock core 2, and one end of the compression spring 6 is against the lower surface of the positioning card plate 41, and the other end is against the upper surface of the spring seat 22. The fourth compression spring 6 is sleeved on the outside of the positioning lock core 2, located between the spring seat 22 in the positioning lock core 2 and the through-core base 3, and one end of the compression spring 6 is against the lower surface of the spring seat 22, and the other end is against the upper surface of the through-core base 3;

[0013] The lower sleeve 7 is provided with a lower sliding link 71 extending radially outward, and after the end of the lower sliding link 71 is slidably sleeved on the outside of the sliding link 4, it is fixedly connected to the spring seat 22 in the lock core 2;

[0014] The ratchet socket wrench 8 comprises: an upper sleeve 81, an upper sliding connecting rod 82 and a sliding groove lever arm 83;

[0015] The upper sleeve 81 is located above the lower sleeve 7 and is coaxially arranged with the lower sleeve 7;

[0016] One end of the upper sliding link 82 is fixedly connected to the upper sleeve 81, and the other end is slidably sleeved on the outside of the sliding link 4 and fixedly connected to the limit plate 11 in the positioning lock cylinder 1;

[0017] One end of the slideway arm 83 is drivingly connected to the upper sleeve 81, and the other end extends outward;

[0018] The upper end of the insulating rod 9 is fixedly connected to the lower end of the positioning lock core 2 .

[0019] Preferably, a limit plate 10 extending horizontally outward is provided on one side of the upper sliding connecting rod 82 in the ratchet socket wrench 8, and two limit blocks 101 extending upward are provided on the upper surface of the limit plate 10, and the slide groove force arm 83 is located between the two limit blocks 101.

[0020] Further preferably, the limiting support plate 10 is an arc-shaped limiting plate.

[0021] Further preferably, the end portion of the slide groove arm 83 extending outward is provided with a downwardly recessed arc-shaped groove 831 .

[0022] Further preferably, slide grooves are symmetrically arranged on the side walls of the through-hole base 3 , and the slide grooves are opposite to the two sliding connecting rods 4 .

[0023] The new maintenance tool for substation provided by the present invention is provided with a lower sleeve and a ratchet socket wrench slidingly arranged on two sliding connecting rods, and the positioning lock core is rotated and moved up and down relative to the positioning lock cylinder, so that the lower sleeve and the ratchet socket wrench can be driven to slide relative to the sliding connecting rod, so as to achieve position adjustment between the two, and then complete the corresponding work. Specifically, before maintenance, the positioning lock core is pulled to move downward along the slide groove relative to the positioning lock cylinder until it moves to the lower end of the slide groove, and the positioning lock core is rotated to move the locking block on the positioning lock core into the locking groove, so that the lower sleeve and the ratchet socket wrench are kept in the open state, and then the staff lifts the maintenance tool to the position of the loose bolt connecting plate, and the lower sleeve is sleeved on the outside of the bolt, and then the positioning lock core is rotated in the opposite direction to rotate the locking block on it into the slide groove, so that the positioning lock cylinder and the positioning lock core are unlocked, and the ratchet socket wrench is sleeved on the outside of the nut on the upper part of the connecting plate, and after being adjusted to a suitable position by the action of the compression spring, the slide groove force arm in the ratchet socket wrench is driven to achieve the tightening of the bolts on the connecting plate. Compared with traditional maintenance tools, the new maintenance tools used in this substation are easier to align with loose bolts, and not only fix the bolts at the lower end, but also fix the nuts above the connecting plate, avoiding the situation where traditional maintenance tools are subjected to one-sided force. While improving work efficiency, it also improves the tightening effect of loose bolts, ensuring that the maintenance work can be passed.

[0024] The novel maintenance tool for a transformer substation provided by the present invention has the advantages of simple structure, reasonable design, convenient use, high working efficiency, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A schematic diagram of the structure of a new type of maintenance tool for a substation provided for the implementation of the present disclosure;

[0028] Figure 2 A schematic diagram of the structure of a positioning lock core in a new maintenance tool for a substation provided for the implementation of the present disclosure;

[0029] Figure 3 A schematic diagram of the structure of a positioning lock cylinder in a new maintenance tool for a substation provided for the implementation of the present disclosure;

[0030] Figure 4 A schematic structural diagram of a limit hammer for use with a new maintenance tool for a substation provided in accordance with the present disclosure. DETAILED DESCRIPTION

[0031] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0032] See also Figure 1 It is a new type of maintenance tool for substations, which consists of a positioning lock cylinder 1, a positioning lock core 2, a through-hole base 3, a top cover 5, a lower sleeve 7, a ratchet socket wrench 8, an insulating rod 9, two sliding connecting rods 4 and four compression springs 6. Figure 3 A limit plate 11 is arranged on the upper part of the positioning lock cylinder 1, and a vertical slide groove 12 is arranged on the side wall of the positioning lock cylinder 1 below the limit plate 11, which runs through the inside and outside. A locking groove 13 is arranged at the lower end of the slide groove 12 and extends along the circumference of the positioning lock cylinder 1, and is connected to the slide groove 12. Figure 2 The upper part of the positioning lock core 2 is nested in the positioning lock cylinder 1. A lock block 21 that cooperates with the slide groove 12 is arranged on the side wall of the positioning lock core 2. A spring seat 22 is arranged in the middle of the positioning lock core 2 and below the lock block 21. When the positioning lock core 2 moves up and down relative to the positioning lock cylinder 1, the lock block 21 moves up and down along the slide groove 12. Figure 1 , the through-core base 3 is fixedly mounted on the lower part of the positioning lock cylinder 2, the two sliding links 4 are respectively located on both sides of the positioning lock cylinder 1, the positioning lock cylinder 2 and the through-core base 3, and the lower ends of the two sliding links 4 are respectively fixedly connected to the through-core base 3, and a positioning card plate 41 is provided on each sliding link 4, the positioning card plate 41 is fixedly connected to the positioning lock cylinder 1, and the position of the positioning card plate 41 corresponds to the position of the locking groove 13 in the positioning lock cylinder 1. The top cover 5 is located above the positioning lock cylinder 1, and the two sides of the top cover 5 are respectively fixedly connected to the upper ends of the two sliding links 4. The first compression spring 6 is mounted on the outside of the positioning lock cylinder 1, and is located between the top cover 5 and the limit plate 11, and one end of the compression spring 6 is against the lower surface of the top cover 5, and the other end of the compression spring 6 is against the upper surface of the limit plate 11. The second compression spring 6 is sleeved on the outside of the positioning lock cylinder 1, located between the limiting disk 11 and the positioning clamping plate 41, and one end of the compression spring 6 is against the lower surface of the limiting disk 11, and the other end is against the upper surface of the positioning clamping plate 41. The third compression spring 6 is sleeved on the outside of the positioning lock cylinder 1 and the positioning lock core 2, located between the positioning clamping plate 41 and the spring seat 22 in the positioning lock core 2, and one end of the compression spring 6 is against the lower surface of the positioning clamping plate 41, and the other end is against the upper surface of the spring seat 22. The fourth compression spring 6 is sleeved on the outside of the positioning lock core 2, located between the spring seat 22 in the positioning lock core 2 and the through-core base 3, and the lower end of the compression spring 6 is against the upper surface of the through-core base 3, and the upper end of the compression spring 6 is against the lower surface of the spring seat 22. The lower sleeve 7 is provided with a lower sliding link 71 extending radially outward, and the end of the lower sliding link 71 is slidably sleeved on the outside of the sliding link 4 and fixedly connected to the spring seat 22 in the lock cylinder 2. The ratchet socket wrench 8 is composed of an upper sleeve 81, an upper sliding link 82 and a slideway arm 83. The upper sleeve 81 is located above the lower sleeve 7 and is relatively coaxially arranged with the lower sleeve 7. One end of the upper sliding link 82 is fixedly connected to the upper sleeve 81, and the other end is slidably sleeved on the outside of the sliding link 4 and fixedly connected to the limit plate 11 in the positioning lock cylinder 1. One end of the slideway arm 83 is connected to the upper sleeve 81, and the other end extends outward. The upper end of the insulating rod 9 is fixedly connected to the lower end of the positioning lock cylinder 2.

[0033] The use process of the new maintenance tool for the above-mentioned substation is divided into a preparation process and an operation process, wherein the preparation process is specifically as follows: First, the staff lifts the ratchet socket wrench upward along the sliding connecting rod. As the ratchet socket wrench moves upward, the second compression spring pushes the limit plate on the upper part of the positioning lock cylinder, causing the positioning lock cylinder to move upward at the same time. When the locking block on the side wall of the positioning lock cylinder contacts the bottom of the slide groove on the side wall of the positioning lock cylinder, the positioning lock cylinder reaches the farthest position due to the obstruction of the locking block and cannot continue to move upward. Then the staff rotates the insulating rod, which drives the positioning lock cylinder to rotate, causing the locking block on the side wall of the positioning lock cylinder to slide into the locking groove. While the positioning lock sleeve is fixed, the position of the ratchet socket wrench is also fixed. Then the staff moved the new maintenance tool for the substation to the position of the loose bolt connecting plate, put the lower sleeve on the lower end of the loose bolt, and then adjusted the position so that the upper sleeve in the ratchet socket wrench was aligned with the nut on the upper part of the loose bolt. At this time, the staff reversed the insulating rod to make the locking block slide from the locking groove in the positioning lock cylinder, and the positioning lock cylinder moved downward. The first compression spring exerted downward pressure on the upper sliding connecting rod in the ratchet socket wrench, and put the upper sleeve on the outside of the upper nut of the loose bolt. Then, the new maintenance tool for the substation was moved up and down several times. Under the pressure of the compression spring, the upper sleeve and the lower sleeve were completely put on the upper and lower ends of the loose bolt. At this time, the preparation process is completed.

[0034] The operation process of the new substation maintenance tool is as follows: After the new substation maintenance tool is fixed on the loose bolt, another staff member needs to hold a limit hammer to apply external force to the slide arm in the ratchet socket wrench. The structure of the limit hammer is as follows, see Figure 4 The limit hammer is composed of a limit hammer head and an insulating rod. A limit plate is arranged at the top of the limit hammer head, a first connecting rod is arranged at the end of the limit hammer head, a plurality of first through holes are arranged at intervals on the side of the first connecting rod, a second connecting rod is arranged at the top of the insulating rod, and a plurality of second through holes are arranged at intervals on the side wall of the second connecting rod. The limit hammer head is fixed to the upper end of the insulating rod by inserting fixing bolts through the first through hole and the second through hole, and different first through holes and second through holes can be selected for connection according to actual conditions and spatial positions. Another construction worker uses a limit hammer to apply force to the slide groove arm in the ratchet socket wrench, so that the slide groove arm drives the upper sleeve to rotate, and the loose bolts in the upper sleeve also rotate accordingly and are gradually tightened. When the required tightening force is reached, the upper sleeve no longer rotates with the slide groove arm, and the loose bolts are tightened at this time. Then remove the limit hammer, pull the insulating rod downward to make the lower sleeve detach from the lower end of the bolt, and then move the insulating rod upward to make the upper sleeve detach from the upper end of the bolt. The new maintenance tool for the substation can be removed and the maintenance work is completed.

[0035] The new maintenance tool for substation is provided with a movable ratchet socket wrench and a lower socket, and the position locking of the ratchet socket wrench and the lower socket is completed by positioning the lock cylinder and the positioning lock core, so that the ratchet socket wrench can be fixed at the farthest distance and is in an open state. When it is in the working position, the unlocking is completed by positioning the lock cylinder and the positioning lock core. At this time, the new maintenance tool for substation fixes the upper and lower ends of the loose bolt at the same time. Compared with the traditional maintenance tool, the loose bolt is prevented from driving the nut at the upper end to rotate together when one end of the loose bolt is tightened, thereby making the new maintenance tool for substation better in tightening the loose bolt and higher in working efficiency. At the same time, four compression springs are arranged in the new maintenance tool for substation. Under the action of the compression springs, the upper sleeve of the ratchet socket wrench and the corresponding lower sleeve can be put on the upper and lower ends of the loose bolt faster and better. While ensuring the tightening effect, it also makes it easier for the staff to operate the new maintenance tool for substation to align the loose bolt, thereby improving the working efficiency.

[0036] The new maintenance tool for substation provided by the present invention has a limit support plate 10 extending horizontally outwardly on one side of the upper sliding connecting rod 82 in the ratchet socket wrench 8, and two limit blocks 101 extending upwardly are arranged on the upper surface of the limit support plate 10, and the slideway arm 83 is located between the two limit blocks 101. When the slideway arm rotates under the external force applied by the limit hammer, the slideway arm is hindered by the two limit blocks on the limit support plate and can only move in the area between the two limit blocks, thereby avoiding the slideway arm from accidentally hitting other electrical equipment, ensuring the safe operation of the equipment while also ensuring the personal safety of the staff, thereby improving safety.

[0037] In order to better limit the movement range of the slide lever arm and further reduce the volume and save the occupied space, in the new maintenance tool for substation provided by the present invention, the limiting support plate 10 is an arc-shaped limiting plate.

[0038] In the new maintenance tool for substation provided by the present invention, the end portion extending outward from the chute arm 83 is provided with a downwardly concave arc groove 831. The limit hammer head can slide into the arc groove at the end portion along the chute arm, and the position of the limit hammer head is fixed by the limit plate of the limit hammer head, thereby preventing the limit hammer head from accidentally hitting other electrical equipment when applying external force to the chute arm using the limit hammer, thereby avoiding safety accidents and improving safety.

[0039] In order to ensure that the lower sleeve can move downward a sufficient distance for position adjustment, and thus more easily align the lower end of the loose bolt, in the new maintenance tool for substations provided by the present invention, slide grooves are symmetrically arranged on the side walls of the through-hole base 3, and the slide grooves are opposite to the two sliding connecting rods 4.

[0040] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0041] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A new maintenance tool for substation, characterized in that: include: A positioning lock cylinder (1), a positioning lock core (2), a through-hole base (3), a top cover (5), a lower sleeve (7), a ratchet socket wrench (8), an insulating rod (9), two sliding connecting rods (4) and four compression springs (6); A limit plate (11) is arranged at the upper part of the positioning lock cylinder (1); a vertical sliding groove (12) is arranged on the side wall of the positioning lock cylinder (1) below the limit plate (11) and runs through the inside and outside; a locking groove (13) is arranged at the lower end of the sliding groove (12) and is in communication with the sliding groove and extends along the circumference of the positioning lock cylinder (1); The upper portion of the positioning lock core (2) is nested in the positioning lock cylinder (1), a lock block (21) cooperating with the slide groove (12) is arranged on the side wall of the positioning lock core (2), and a spring seat (22) is arranged in the middle of the positioning lock core (2), when the positioning lock core (2) moves up and down relative to the positioning lock cylinder (1), the lock block (21) moves up and down along the slide groove (12); The through-core base (3) is sleeved on the lower part of the positioning lock core (2); The two sliding links (4) are respectively located on both sides of the positioning lock cylinder (1), the positioning lock core (2) and the through-hole base (3), and the lower ends of the two sliding links (4) are respectively fixedly connected to the through-hole base (3), and a positioning clamping plate (41) is provided on each of the sliding links (4), the positioning clamping plate (41) is fixedly connected to the positioning lock cylinder (1), and the position of the positioning clamping plate (41) corresponds to the position of the locking groove (13) in the positioning lock cylinder (1); The top cover (5) is located above the positioning lock cylinder (1), and two sides of the top cover (5) are respectively fixedly connected to the upper ends of the two sliding connecting rods (4); The first compression spring (6) is sleeved on the outside of the positioning lock cylinder (1), located between the top cover (5) and the limiting plate (11), and one end of the compression spring (6) is against the lower surface of the top cover (5), and the other end is against the upper surface of the limiting plate (11). The second compression spring (6) is sleeved on the outside of the positioning lock cylinder (1), located between the limiting plate (11) and the positioning clamping plate (41), and one end of the compression spring (6) is against the lower surface of the limiting plate (11), and the other end is against the upper surface of the positioning clamping plate (41). The third compression spring (6) is sleeved on the The positioning lock cylinder (1) and the outside of the positioning lock core (2) are located between the positioning card plate (41) and the spring seat (22) in the positioning lock core (2), and one end of the compression spring (6) abuts against the lower surface of the positioning card plate (41), and the other end abuts against the upper surface of the spring seat (22); the fourth compression spring (6) is sleeved on the outside of the positioning lock core (2), and is located between the spring seat (22) in the positioning lock core (2) and the through-hole base (3), and one end of the compression spring (6) abuts against the lower surface of the spring seat (22), and the other end abuts against the upper surface of the through-hole base (3); The lower sleeve (7) is provided with a lower sliding link (71) extending radially outward, and the end of the lower sliding link (71) is slidably sleeved on the outside of the sliding link (4) and fixedly connected to the spring seat (22) in the positioning lock core (2); The ratchet socket wrench (8) comprises: an upper sleeve (81), an upper sliding connecting rod (82) and a sliding groove force arm (83); The upper sleeve (81) is located above the lower sleeve (7) and is coaxially arranged relative to the lower sleeve (7); One end of the upper sliding link (82) is fixedly connected to the upper sleeve (81), and the other end is slidably sleeved on the outside of the sliding link (4) and then fixedly connected to the limit plate (11) in the positioning lock cylinder (1); One end of the slide groove arm (83) is drivingly connected to the upper sleeve (81), and the other end extends outward; The upper end of the insulating rod (9) is fixedly connected to the lower end of the positioning lock core (2); A limit support plate (10) extending horizontally outward is provided on one side of the upper sliding connecting rod (82) in the ratchet socket wrench (8), two limit blocks (101) extending upward are provided on the upper surface of the limit support plate (10), and the slide groove force arm (83) is located between the two limit blocks (101); The end portion of the sliding groove force arm (83) extending outwards is provided with a downwardly recessed arc-shaped groove (831).

2. According to claim 1, the new maintenance tool for substation is characterized in that: The limiting support plate (10) is an arc-shaped limiting plate.

3. According to claim 1, the new maintenance tool for substation is characterized in that: Slide grooves are symmetrically arranged on the side wall of the through-hole base (3), and the slide grooves are opposite to the two sliding connecting rods (4).

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