Electric power engineering distribution line fault rapid positioning device

Abstract

The invention relates to the technical field of distribution line fault detection, and provides an electric power engineering distribution line fault rapid positioning device which comprises a support, an upper roller frame and a lower roller frame are symmetrically installed at the top end and the bottom end in the support respectively, positioning rollers are installed on the upper roller frame and the lower roller frame, and the top end of the upper roller frame is connected with an adjusting assembly. The adjusting assembly comprises an adjusting lead screw installed at the top end of the support, a shaft sleeve installed at the bottom end of the adjusting lead screw and a rotating handle installed at the top end of the adjusting lead screw. Through the arranged adjusting assembly, the upper roller frame is pushed by the adjusting assembly to move downwards, so that the upper positioning roller and the lower positioning roller make contact with the distribution line, the purpose of longitudinal positioning is achieved, meanwhile, the lower wedge blocks push the upper wedge blocks to move, the limiting springs are compressed, the limiting wheels move oppositely and make contact with the distribution line, and the purpose of transverse positioning is achieved. And the distribution line is longitudinally and transversely positioned through the positioning rollers and the limiting wheels, so that the positioning effect of the distribution line can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of distribution line fault detection, and particularly relates to a fast positioning device for distribution line faults in power engineering. Background Art

[0002] With the continuous development of the power engineering industry, the distribution line fault detection technology has also been greatly improved. Distribution line faults include various problems such as line short circuit, poor line contact, overload, insulation aging, etc. Once these problems occur, they will have a serious impact on the stable operation of the power system. For these faults, timely detection and corresponding countermeasures need to be formulated to ensure the safe operation of the power system. When detecting distribution line faults, a fast positioning device is required.

[0003] For this reason, the patent with the authorization announcement number CN216310166U discloses a device for early fault location of distribution lines, which relates to the technical field of distribution line detection equipment, specifically a device for early fault location of distribution lines, including a main body of the positioning device. A connecting frame is fixedly installed at the top of the main body of the positioning device, and two sets of supporting rollers are movably installed at the top of the connecting frame. For this device for early fault location of distribution lines, pull the protective plug board upward, and pull the two pressing rollers upward through the installation card frame to increase the distance between the pressing rollers and the supporting rollers, facilitating the disassembly and assembly of the whole device along the distribution line. At the same time, an elastic force applying rod applies an elastic force to the installation card frame and the pressing rollers, so that the pressing rollers and the supporting rollers can clamp the distribution line. At the same time, after installation, the upper positioning gear, the lower positioning gear, the pressing rollers and the supporting rollers are restricted through the locking component to prevent the pressing rollers and the supporting rollers from rotating.

[0004] When the existing fast positioning device for distribution line faults in power engineering is in use, it can only position the distribution line in one direction, and it is difficult to perform multi-directional positioning on it. The positioning effect is not good and the practicability is not strong. Summary of the Invention

[0005] The purpose of the present invention is to provide a fast positioning device for distribution line faults in power engineering to solve the defect that the existing fast positioning device for distribution line faults in power engineering has a poor positioning effect.

[0006] To solve the above technical problems, the present invention provides the following technical solution: A fast fault location device for a power engineering distribution line, including a bracket. At the top and bottom inside the bracket, an upper roller frame and a lower roller frame are symmetrically installed respectively, and positioning rollers are installed on both the upper roller frame and the lower roller frame. The top of the upper roller frame is connected to an adjusting component. The adjusting component includes an adjusting screw rod installed at the top of the bracket, a sleeve installed at the bottom of the adjusting screw rod, and a rotary handle installed at the top of the adjusting screw rod. A protective structure is arranged at the top inside the adjusting screw rod, and a lubricating structure is arranged inside the adjusting screw rod. On the outer side of the positioning roller, a limiting structure for clamping and positioning the power engineering distribution line is symmetrically arranged. The limiting structure includes two parts: a lower wedge block and a limiting component. The lower wedge block is installed at both ends of the lower roller frame. The limiting component includes a limiting block installed at both ends of the upper roller frame, a limiting rod installed on the limiting block, a limiting wheel installed at one end of the limiting rod, an upper wedge block installed at the other end of the limiting rod, and a limiting spring sleeved on the limiting rod between the limiting block and the upper wedge block.

[0007] Preferably, grooves are formed on the inner wall of the bracket.

[0008] Through the above structure, a certain limiting and guiding effect can be exerted on the upper roller frame, improving the stability when the upper roller frame moves up and down.

[0009] Preferably, a positioning groove with a width greater than the width of the limiting block is formed on the upper surface of the lower roller frame.

[0010] Through the above structure, while not interfering with the movement of the limiting block, the positioning groove can also exert a certain limiting and guiding effect on it.

[0011] Preferably, anti-slip lines are installed on the surface of the limiting wheel.

[0012] Through the above structure, the anti-slip lines can increase the friction between the limiting wheel and the distribution line to a certain extent, enhancing the positioning effect of the limiting wheel.

[0013] Preferably, the limiting rod includes a first rod, a screw rod, and a second rod. The first rod is fixedly connected to the limiting wheel, the second rod is fixedly connected to the upper wedge block, a screw rod is installed on the first rod, and a screw hole matching the screw rod is formed on the second rod.

[0014] Through the above structure, by rotating the limiting wheel, the screw rod moves along the screw hole, adjusting the distance between the first rod and the second rod, and adjusting the overall length of the limiting rod, so that the limiting wheel can perform lateral positioning on wiring lines with different diameters.

[0015] Preferably, the bottom end of the adjusting screw rod is inserted into the sleeve and forms a sliding connection with it.

[0016] With the above structure, by rotating the adjusting screw rod, the shaft sleeve can drive the upper roller frame to move up and down.

[0017] Preferably, the protection structure includes a limit groove, a clamping groove, a connecting rod, a clamping block and a telescopic spring. The connecting rod is installed at the bottom end of the rotary handle. A clamping block is installed on the surface of the connecting rod. The limit groove is opened at the top end inside the adjusting screw rod. A clamping groove matching with the clamping block is opened on the inner wall of the limit groove. The telescopic spring is installed between the connecting rod and the bottom end inside the limit groove.

[0018] With the above structure, the protection structure can play a certain role in preventing accidental touch, avoiding the situation that the inspector accidentally touches the rotary handle and causes the positioning roller to damage the power distribution line, and improving the safety performance of use.

[0019] Preferably, there are several clamping blocks, which are arranged at equal intervals on the surface of the connecting rod.

[0020] With the above structure, several clamping blocks are engaged with the clamping grooves, which can improve the clamping force.

[0021] Preferably, the clamping block and the clamping groove form a clamping structure.

[0022] With the above structure, when the rotary handle is rotated, the adjusting screw rod rotates synchronously with the rotary handle.

[0023] Preferably, the lubrication structure includes a valve core, a lubrication channel, a valve seat, a lubrication pipe, a sealing gasket and a connecting block. The lubrication pipe is installed inside the adjusting screw rod. A sealing gasket is installed at the top end inside the lubrication pipe. A valve seat is installed inside the lubrication pipe, and a valve core is installed on the valve seat. A connecting block is installed at the top end of the valve core. The connecting block is fixedly connected with the connecting rod. An oil injection hole is opened on the connecting block. The lubrication channel is opened on the outer surface of the adjusting screw rod.

[0024] With the above structure, the lubricating oil can flow to the surface of the adjusting screw rod to lubricate it, reduce the friction between the adjusting screw rod and the bracket, and can improve the service life of the adjusting screw rod to a certain extent.

[0025] The advantages of a power engineering power distribution line fault rapid positioning device provided by the present invention are as follows:

[0026] By setting the adjusting assembly, the adjusting assembly is used to push the upper roller frame downward, so that the upper positioning roller and the lower positioning roller are in contact with the power distribution line, and longitudinally press it to achieve the purpose of longitudinally positioning the power distribution line. At the same time, the lower wedge block pushes the upper wedge block to move, the limit spring is compressed, and the limit wheels move towards each other and are in contact with the power distribution line to laterally clamp it to achieve the purpose of laterally positioning the power distribution line. Through the longitudinal and lateral positioning of the power distribution line by the positioning rollers and the limit wheels, the positioning effect of the power distribution line can be improved, and the stability of the power distribution line during detection can be enhanced;

[0027] Further, anti-slip patterns are provided on the limit wheel, which can increase the friction between the limit wheel and the power distribution line, enhance the positioning effect of the limit wheel. Rotate the limit wheel, and the screw rod moves along the screw hole, adjusting the distance between the first rod and the second rod, and adjusting the overall length of the limit rod, so that the limit wheel can perform lateral positioning on power distribution lines with different diameters, improving its practicability;

[0028] Through the provided adjustment assembly, press down the rotary handle, the connecting rod enters the limit groove, and the clamping block is clamped into the clamping groove. Rotate the rotary handle, the adjustment screw rod rotates, and the sleeve drives the upper roller frame to move downward, adjusting the distance between the upper positioning roller and the lower positioning roller, so as to perform longitudinal positioning on power distribution lines with different diameters and enhance the positioning effect;

[0029] Further, loosen the rotary handle, the telescopic spring pushes the rotary handle upward, the clamping block exits the clamping groove, and the rotary handle moves away from the adjustment screw rod, which can achieve the purpose of preventing accidental touch, avoiding the situation that the positioning roller crushes the power distribution line due to the inspector accidentally touching the rotary handle;

[0030] Through the provided lubrication structure, when pressing down the rotary handle, the connecting rod drives the connecting block to move downward, the valve core moves downward, and the lubricating oil in the lubricating pipe flows through the through hole on the valve seat to the lubricating channel, and then flows from the lubricating channel to the surface of the adjustment screw rod, achieving the purpose of lubricating it, reducing the friction between the adjustment screw rod and the bracket, and improving the service life of the adjustment screw rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is the front view structural schematic diagram of the present invention;

[0032] Figure 2 is the side view structural schematic diagram of the present invention;

[0033] Figure 3 is the partial top view structural schematic diagram of the present invention;

[0034] Figure 4 is of the present invention Figure 2 amplified structural schematic diagram at A in;

[0035] Figure 5 is the partial front view structural schematic diagram of the limit structure of the present invention;

[0036] Figure 6 is the front view structural schematic diagram of the adjustment assembly of the present invention;

[0037] Figure 7 is the front view sectional structural schematic diagram of the protection structure of the present invention;

[0038] Figure 8 is the front view sectional structural schematic diagram of the lubrication structure of the present invention.

[0039] Description of the reference numerals in the drawings: 1, bracket; 11, groove; 2, upper roller frame; 3, lower roller frame; 31, positioning groove; 4, limiting structure; 41, lower wedge block; 42, limiting component; 421, limiting spring; 422, limiting block; 423, limiting wheel; 4231, anti-slip pattern; 424, limiting rod; 4241, first rod; 4242, screw rod; 4243, screw hole; 4244, second rod; 425, upper wedge block; 5, adjusting component; 51, bushing; 52, adjusting screw rod; 53, knob; 6, positioning roller; 7, protection structure; 71, limiting groove; 72, clamping groove; 73, connecting rod; 74, clamping block; 75, telescopic spring; 8, lubrication structure; 81, valve core; 82, lubrication channel; 83, valve seat; 84, lubrication pipe; 85, gasket; 86, connecting block. Detailed implementation mode

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0041] Please refer to Figures 1-8 , a fast fault location device for power engineering distribution lines provided by the present invention includes a bracket 1.

[0042] Referring to Figures 1-8 As shown, an upper roller frame 2 and a lower roller frame 3 are symmetrically installed at the top and bottom inside the bracket 1 respectively, and positioning rollers 6 are installed on both the upper roller frame 2 and the lower roller frame 3. The positioning rollers 6 are used to longitudinally press the wiring lines. The top of the upper roller frame 2 is connected to an adjusting component 5. The adjusting screw rod 52 is used to adjust the height position of the upper roller frame 2 so that the positioning rollers 6 can contact wiring lines with different diameters. The adjusting component 5 includes an adjusting screw rod 52 installed at the top of the bracket 1, a bushing 51 installed at the bottom end of the adjusting screw rod 52, and a knob 53 installed at the top end of the adjusting screw rod 52. An anti-slip pad is installed on the knob 53 to facilitate the inspector to turn the knob 53 and improve the turning efficiency. The bottom end of the adjusting screw rod 52 is inserted into the bushing 51 and forms a sliding connection therewith, so that when the knob 53 is turned, the adjusting screw rod 52 can push the bushing 51 to move up and down.

[0043] At the top inside the adjusting lead screw 52, a protection structure 7 is provided. The protection structure 7 is used to improve the safety of the positioning device during use and enhance its use effect. The protection structure 7 includes a limiting groove 71, a clamping groove 72, a connecting rod 73, a clamping block 74, and a telescopic spring 75. The connecting rod 73 is installed at the bottom end of the rotating handle 53. A clamping block 74 is installed on the surface of the connecting rod 73. The limiting groove 71 is opened at the top inside the adjusting lead screw 52. A clamping groove 72 matching the clamping block 74 is opened on the inner wall of the limiting groove 71. There are several clamping blocks 74, which are arranged at equal intervals on the surface of the connecting rod 73. The several clamping blocks 74 are engaged with the clamping groove 72, which can improve the engagement efficiency and enhance the stability during rotation. The clamping block 74 and the clamping groove 72 form a clamping structure. The telescopic spring 75 is installed between the bottom end inside the connecting rod 73 and the limiting groove 71. The telescopic spring 75 is used to push the rotating handle 53 upward to separate it from the adjusting lead screw 52.

[0044] On the outer side of the positioning roller 6, a limiting structure 4 for clamping and positioning the power engineering distribution line is symmetrically provided. The limiting structure 4 includes two parts: a lower wedge block 41 and a limiting component 42. The lower wedge block 41 is located below the limiting component 42 to push the limiting component 42 to move and perform lateral limitation on the distribution line. The lower wedge block 41 is installed at both ends of the lower roller frame 3. The limiting component 42 includes a limiting block 422 installed at both ends of the upper roller frame 2, a limiting rod 424 installed on the limiting block 422, and a limiting wheel 423 installed at one end of the limiting rod 424. The limiting wheel 423 can perform lateral clamping on the distribution line to further improve the positioning effect on the distribution line. An anti-slip pattern 4231 is installed on the surface of the limiting wheel 423. The anti-slip pattern 4231 can, to a certain extent, increase the friction between the limiting wheel 423 and the distribution line and enhance the lateral positioning effect of the limiting wheel 423. An upper wedge block 425 installed at the other end of the limiting rod 424 and a limiting spring 421 sleeved on the limiting rod 424 between the limiting block 422 and the upper wedge block 425. The limiting spring 421 is used to drive the limiting wheel 423 to approach the upper wedge block 425 so that the limiting wheel 423 returns to its initial position.

[0045] During use, press and rotate the knob 53, which causes the lead screw 52 to rotate. The upper roller frame 2 moves upward, increasing the distance between the upper positioning roller 6 and the lower positioning roller 6. Place the power distribution line on the positioning roller 6 of the lower roller frame 3. Press the knob 53, and the connecting rod 73 enters the limit groove 71 until the block 74 snaps into the slot 72. Rotate the knob 53, causing the lead screw 52 to rotate. The bushing 51 drives the upper roller frame 2 to move downward, adjusting the distance between the upper positioning roller 6 and the lower positioning roller 6 so that they contact the power distribution line and longitudinally compress the power distribution line to achieve the purpose of positioning it. At the same time, during the downward movement of the upper roller frame 2, the lower wedge block 41 pushes the upper wedge block 425 to move, compressing the limit spring 421, and the limit wheels 423 move towards each other and contact the power distribution line to laterally clamp it, further achieving the purpose of positioning the power distribution line. Through the longitudinal and lateral positioning of the power distribution line by the positioning roller 6 and the limit wheels 423, the positioning effect of the power distribution line is improved, enhancing its stability during detection, facilitating the detection operator to detect the power distribution line, and improving the detection effect.

[0046] After the power distribution line is positioned, release the knob 53. The telescopic spring 75 pushes the knob 53 upward, and the connecting rod 73 drives the block 74 to move upward. The block 74 exits the slot 72 and disengages from it. The knob 53 moves away from the lead screw 52. At this time, when the knob 53 is rotated, the lead screw 52 cannot rotate synchronously, which can, to a certain extent, prevent the situation where the detection operator accidentally touches the knob 53 and causes the positioning roller 6 to damage the power distribution line, improving the safety performance of use.

[0047] The limit rod 424 includes a first rod 4241, a screw rod 4242, and a second rod 4244. The first rod 4241 is fixedly connected to the limit wheel 423, the second rod 4244 is fixedly connected to the upper wedge block 425. The screw rod 4242 is installed on the first rod 4241, and a threaded hole 4243 matching the screw rod 4242 is provided on the second rod 4244. The screw rod 4242 extends into the threaded hole 4243 and forms a threaded connection with it.

[0048] Furthermore, the upper roller frame 2 is driven by the adjustment assembly 5 to move up and down to adjust the distance between the upper positioning roller 6 and the lower positioning roller 6, so that the positioning roller 6 can longitudinally position power distribution lines with different diameters, enhancing the positioning effect. By rotating the limit wheel 423, the screw rod 4242 moves along the threaded hole 4243 to adjust the distance between the first rod 4241 and the second rod 4244, adjusting the overall length of the limit rod 424, so that the limit wheel 423 can laterally position power distribution lines with different diameters, improving its practicality.

[0049] A groove 11 is formed on the inner wall of the bracket 1. The groove 11 is used to limit the up-and-down movement of the upper roller frame 2 when it moves up and down, improving its stability during up-and-down movement. A positioning groove 31 with a width greater than that of the limiting block 422 is formed on the upper surface of the lower roller frame 3. While not interfering with the movement of the limiting block 422, the positioning groove 31 can play a certain role in limiting and guiding it.

[0050] Referring Figure 6 , Figure 7 and Figure 8 As shown, a lubrication structure 8 is provided inside the adjusting screw rod 52. The lubrication structure 8 is used to lubricate the adjusting screw rod 52, improving its service life. The lubrication structure 8 includes a valve core 81, a lubrication channel 82, a valve seat 83, a lubrication pipe 84, a sealing gasket 85 and a connecting block 86. The lubrication pipe 84 is installed inside the adjusting screw rod 52. A sealing gasket 85 is installed at the top end inside the lubrication pipe 84. The sealing gasket 85 is in close contact with the connecting block 86, improving the sealing performance between the connecting block 86 and the lubrication pipe 84 and preventing the leakage of lubricating oil. A valve seat 83 is installed inside the lubrication pipe 84. A through hole is formed inside the valve seat 83. A valve core 81 is installed on the valve seat 83. The valve core 81 has a structure that is narrower at the top and wider at the bottom so as to block the through hole on the valve seat 83. A connecting block 86 is installed at the top end of the valve core 81. The connecting block 86 is fixedly connected to the connecting rod 73. An oil injection hole is formed on the connecting block 86. The outlet of the oil injection hole is located on the connecting block 86 inside the lubrication pipe 84. When refueling, it is convenient for the lubricating oil to flow into the inside of the lubrication pipe 84 from the oil injection hole. The lubrication channel 82 is formed on the outer surface of the adjusting screw rod 52. There are several lubrication channels 82, and they are in an inclined structure so that the lubricating oil can flow to the surface of the adjusting screw rod 52.

[0051] Inject lubricating oil into the lubrication pipe 84 through the oil injection hole. When pressing down the rotary handle 53, the connecting rod 73 drives the connecting block 86 to move downward, the valve core 81 moves downward, the valve core 81 is separated from the valve seat 83, and the through hole on the valve seat 83 is exposed. The lubricating oil in the lubrication pipe 84 flows to the lubrication channel 82 through the through hole on the valve seat 83, and then flows to the surface of the adjusting screw rod 52 through the lubrication channel 82 to lubricate it. Thus, to a certain extent, the friction between the adjusting screw rod 52 and the bracket 1 can be reduced, the wear of the adjusting screw rod 52 can be reduced, and the service life of the adjusting screw rod 52 can be improved. When the rotary handle 53 is released and the telescopic spring 75 pushes the rotary handle 53 upward and the latch 74 exits the card slot 72, the connecting rod 73 drives the connecting block 86 to move upward, the valve core 81 moves upward, blocking the through hole on the valve seat 83, so that the lubricating oil in the lubrication channel 82 no longer flows into the inside of the lubrication channel 82, and the lubrication of the adjusting screw rod 52 can be stopped to avoid waste.

[0052] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A device for quickly locating faults in a power distribution line of an electric power engineering project, comprising a bracket (1); Features: An upper roller frame (2) and a lower roller frame (3) are symmetrically mounted at the top and bottom of the bracket (1), and positioning rollers (6) are mounted on both the upper roller frame (2) and the lower roller frame (3), and the top of the upper roller frame (2) is connected to an adjustment component (5); The adjusting assembly (5) comprises an adjusting screw (52) mounted on the top end of the bracket (1), a shaft sleeve (51) mounted on the bottom end of the adjusting screw (52) and a rotary handle (53) mounted on the top end of the adjusting screw (52), a protective structure (7) being arranged at the top end of the adjusting screw (52), and a lubricating structure (8) being arranged inside the adjusting screw (52); The outer side of the positioning roller (6) is symmetrically provided with a limiting structure (4) for clamping and positioning the power distribution line of the power engineering; The limiting structure (4) comprises a lower wedge block (41) and a limiting assembly (42), wherein the lower wedge block (41) is mounted at both ends of the lower roller frame (3), and the limiting assembly (42) comprises limiting blocks (422) mounted at both ends of the upper roller frame (2), a limiting rod (424) mounted on the limiting blocks (422), a limiting wheel (423) mounted at one end of the limiting rod (424), an upper wedge block (425) mounted at the other end of the limiting rod (424), and a limiting spring (421) mounted on the limiting rod (424) between the limiting block (422) and the upper wedge block (425).

2. The device for quickly locating faults in power distribution lines of an electric power engineering project according to claim 1, characterized in that: A groove (11) is provided on the inner wall of the bracket (1).

3. The device for quickly locating faults in power distribution lines of an electric power engineering project according to claim 1, characterized in that: The upper surface of the lower roller frame (3) is provided with a positioning groove (31) whose width is greater than the width of the limiting block (422).

4. The device for quickly locating faults in power distribution lines of an electric power engineering project according to claim 1, characterized in that: The surface of the limiting wheel (423) is provided with anti-skid patterns (4231).

5. The device for quickly locating faults in power distribution lines of an electric power engineering project according to claim 1, characterized in that: The limiting rod (424) includes a first rod (4241), a screw rod (4242) and a second rod (4244); the first rod (4241) is fixedly connected to the limiting wheel (423); the second rod (4244) is fixedly connected to the upper wedge block (425); the first rod (4241) is provided with a screw rod (4242); and the second rod (4244) is provided with a screw hole (4243) that matches the screw rod (4242).

6. The device for quickly locating faults in power distribution lines of an electric power engineering project according to claim 1, characterized in that: The bottom end of the adjusting screw rod (52) is inserted into the shaft sleeve (51) and is slidably connected thereto.

7. The device for quickly locating faults in power distribution lines of an electric power engineering project according to claim 1, characterized in that: The protective structure (7) comprises a limiting groove (71), a clamping groove (72), a connecting rod (73), a clamping block (74) and a telescopic spring (75); the connecting rod (73) is installed at the bottom end of the rotary handle (53); the clamping block (74) is installed on the surface of the connecting rod (73); the limiting groove (71) is arranged at the top end of the adjusting screw rod (52); the inner wall of the limiting groove (71) is provided with a clamping groove (72) matched with the clamping block (74); and the telescopic spring (75) is installed between the connecting rod (73) and the bottom end of the limiting groove (71).

8. The device for quickly locating faults in power distribution lines of an electric power engineering project according to claim 7, characterized in that: There are a plurality of clamping blocks (74) which are arranged at equal intervals on the surface of the connecting rod (73).

9. The device for quickly locating faults in power distribution lines of an electric power engineering project according to claim 7, characterized in that: The clamping block (74) and the clamping slot (72) form a clamping structure.

10. The device for quickly locating faults in power distribution lines of an electric power engineering project according to claim 1, characterized in that: The lubrication structure (8) comprises a valve core (81), a lubrication passage (82), a valve seat (83), a lubrication pipe (84), a sealing gasket (85) and a connecting block (86); the lubrication pipe (84) is installed inside the adjusting screw rod (52); a sealing gasket (85) is installed at the top end of the lubrication pipe (84); a valve seat (83) is installed inside the lubrication pipe (84); a valve core (81) is installed on the valve seat (83); a connecting block (86) is installed at the top end of the valve core (81); the connecting block (86) is fixedly connected to the connecting rod (73); an oil filling hole is provided on the connecting block (86); and the lubrication passage (82) is provided on the outer surface of the adjusting screw rod (52).

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