Plug-in device and live working tool for quickly replacing power transmission line pin

Abstract

The invention discloses a plugging device and a hot-line work tool for rapidly replacing a power transmission line pin, and relates to the technical field of electric power engineering, and the plugging device comprises a locking pin which comprises a pin rod, a pin head arranged at one end of the pin rod, and jacks symmetrically formed in the outer wall of the pin head; the clamping assembly comprises inserting rods and a first elastic piece arranged between the two inserting rods; the locking pin is arranged, the insertion rod is inserted into the insertion hole to fix the locking pin, the locking pin is further inserted into the bolt hole of the connection fitting, and the locking pin is fixed under the action of the second elastic piece and the clamping plate, so that major accidents such as wire dropping caused by pin dropping are avoided, and economic loss is reduced; the first connecting rod is connected with the insulating grounding rod, the inserting rod is further clamped into the inserting hole, the adjusting piece can adjust the angle according to the directions of pin inserting holes of different wire clamps and carry out supplementary installation work, so that an operator does not need to approach the wire clamp body, the operation safety is improved, and meanwhile, the hot-line work time is shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power engineering, and in particular to a plug-in device and a live working tool for quickly replacing pins of a transmission line. Background Art

[0002] In the use of bolts of connection fittings in power transmission lines, in order to prevent the bolts from falling off the connection fittings, split pins are used for anti-dropping. However, during years of operation, the material of the split pins corrodes, resulting in the split pins falling off. At this time, it will bring great potential safety hazards to the safe operation of the transmission line. If the lack of split pins is rated as a serious defect, and if such defects cannot be handled in time, major accidents such as wire dropping may occur. Especially for single-source lines, the power supply reliability cannot be guaranteed, which will directly cause relatively large economic losses.

[0003] Currently, for the work of making up the lack of split pins, power outage of the line is usually required for cooperation, which not only affects the power supply reliability but also threatens the safety of the power grid. Compared with outage maintenance, live working takes a short time and does not require power outage. However, when using the equal-potential working method, the staff needs to enter and exit the strong electric field, with complex operations, high risks, high labor intensity, and low efficiency. When making up the split pins of the line clamps of 35 kV and 110 kV transmission lines, due to the limitation of the combined gap, the equal-potential working method cannot be used, and only power outage work can be carried out. The traditional working method requires the operator to approach the line clamp body, which has the risk of falling from a height, is unsafe and laborious. In terms of live working at ground potential, there is no special ground potential making-up tool in China, and it is difficult to operate live at ground potential.

[0004] Based on the above problems, we propose a plug-in device and a live working tool for quickly replacing pins of a transmission line. Summary of the Invention

[0005] Therefore, the technical problems to be solved by the present invention are: how to prevent the split pins from falling off, avoid major accidents such as wire dropping, and how to perform live operation at ground potential for making up the split pins.

[0006] The above technical problems are solved by the following technical solutions: a locking pin, including a pin rod, a pin head provided at one end of the pin rod, and insertion holes symmetrically opened on the outer wall of the pin head; a clamping assembly, including insertion rods and a first elastic member provided between the two insertion rods; the two insertion rods can be inserted into the insertion holes, and the locking pin is clamped by the pulling force of the first elastic member, so that a non-parallel state is formed between the two insertion rods, and the pin rod can be inserted into the bolt hole of the connection fitting under live conditions to clamp the bolt of the connection fitting.

[0007] In a preferred embodiment of the plug-in device of the present invention: a receiving groove is opened on the outer wall of the pin rod, and a clamping plate is movably provided inside the receiving groove.

[0008] In a preferred embodiment of the plugging device of the present invention: a second elastic member is provided inside the receiving groove, and one end of the second elastic member is connected to the outer wall of the clamping plate.

[0009] In a preferred embodiment of the plugging device of the present invention: a support frame is provided outside the plug rod, and two movable grooves are provided on the outer wall of the support frame.

[0010] In a preferred embodiment of the plugging device of the present invention: the two plug rods are respectively movably arranged inside the two movable grooves.

[0011] The beneficial effects of the present invention are as follows: by providing a locking pin, the locking pin is fixed by inserting the plug rod into the jack, and further the locking pin is inserted into the bolt hole of the connecting fitting. Under the action of the second elastic member and the clamping plate, the locking pin is fixed, avoiding major accidents such as wire disconnection caused by the pin falling off, thereby improving the safety and power supply reliability of the transmission line and reducing economic losses.

[0012] The present invention also provides a live working tool for quickly replacing pins of a transmission line, which includes: a mounting component, including a movable member and an adjusting member provided on the outer wall of the movable member; the movable member is connected to an insulating operating rod, and the adjusting member can adjust the angle of the clamping component and install the locking pin in the bolt hole of the connecting fitting through the clamping component.

[0013] In a preferred embodiment of the live working tool for quickly replacing pins of a transmission line of the present invention: the movable member includes a first connecting rod, and a fixing cylinder is provided at one end of the first connecting rod, and a thread is provided on the inner wall of the fixing cylinder.

[0014] In a preferred embodiment of the live working tool for quickly replacing pins of a transmission line of the present invention: the adjusting member includes a first toothed plate, a second toothed plate is movably engaged with the outer wall of the first toothed plate, and a threaded rod is movably provided inside the first toothed plate and the second toothed plate.

[0015] In a preferred embodiment of the live working tool for quickly replacing pins of a transmission line of the present invention: a second connecting rod is provided outside the first connecting rod, and the first connecting rod and the second connecting rod are connected through the adjusting member.

[0016] In a preferred embodiment of the live working tool for quickly replacing pins of a transmission line of the present invention: a third connecting rod is provided outside the second connecting rod, and the second connecting rod and the third connecting rod are connected through the adjusting member.

[0017] Another beneficial effect of the present invention is that by providing a fixed cylinder to connect the first connecting rod with the insulated grounding rod, further inserting the plug rod into the jack, the adjusting member can adjust the angle according to the orientation of the pin jacks of different wire clamps for the supplementary installation work, enabling the operator not to approach the wire clamp body, reducing the risk of falling from height, improving the safety of the operation, shortening the live working time, enhancing the operation efficiency, and reducing the labor intensity of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present invention and do not limit the present invention. Among them:

[0019] Figure 1 shows the overall structural schematic diagram of the locking pin;

[0020] Figure 2 shows the overall connection structural schematic diagram of the live working tool for quickly replacing the pins of the transmission line;

[0021] Figure 3 shows the cross-sectional view of the overall connection structure of the live working tool for quickly replacing the pins of the transmission line;

[0022] Figure 4 shows the flow chart of the live pin supplementary operation. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below in conjunction with the specific embodiments and the drawings.

[0024] The terms used in the present invention are those general terms that are currently widely used in the art in consideration of the functions of the present invention, but these terms can change according to the intentions of those of ordinary skill in the art, precedents, or new technologies in the art. In addition, specific terms can be selected by the applicant, and in this case, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but based on the meanings of the terms and the overall description of the present invention.

[0025] Refer to Figure 1 and Figure 2, this embodiment provides a plugging device, including a locking pin 1, which includes a pin rod 11, a pin head 12 provided at one end of the pin rod 11, and insertion holes 13 symmetrically opened on the outer wall of the pin head 12; a clamping assembly 2, which includes a plug rod 21 and a first elastic member 22 provided between the two plug rods 21; the two plug rods 21 can be inserted into the insertion holes 13, and the locking pin 1 is clamped by the pulling force of the first elastic member 22, so that a non-parallel state is formed between the two plug rods 21, and the pin rod 11 can be inserted into the bolt hole of the connecting fitting under live conditions to clamp the connecting fitting bolt.

[0026] The pin rod 11 is the main part of the locking pin 1 and is used to be inserted into the bolt hole of the connecting fitting. Insertion holes 13 are symmetrically opened on the outer wall of the pin head 12, and the insertion holes 13 can cooperate with the plug rods 21 to ensure that the locking pin 1 does not fall off during the installation process; the plug rods 21 are movably connected inside the movable slots 212 through a rotating shaft. One end of the plug rod 21 close to the insertion hole 13 is relatively slender, which is convenient for inserting into the insertion hole 13. The first elastic member 22 is preferably a tension spring.

[0027] As an alternative embodiment, a receiving groove 111 is opened on the outer wall of the pin rod 11, and a clamping plate 112 is movably provided inside the receiving groove 111.

[0028] The receiving groove 111 is opened on the side wall of the pin rod 11, and there is a certain distance between the receiving groove 111 and the pin head 12; the clamping plate 112 is arranged inside the receiving groove 111, and one end of the clamping plate 112 is movably connected inside the receiving groove 111.

[0029] As an alternative embodiment, a second elastic member 113 is provided inside the receiving groove 111, and one end of the second elastic member 113 is connected to the outer wall of the clamping plate 112.

[0030] The second elastic member 113 is preferably a compression spring. The second elastic member 113 is connected to the inner wall of the receiving groove 111, and the other end is connected to the outer wall of the clamping plate 112 on the side close to the receiving groove 111.

[0031] As an alternative embodiment, a support frame 211 is provided outside the plug rod 21, and two movable slots 212 are opened on the outer wall of the support frame 211.

[0032] The support frame 231 is trapezoidal, and two movable slots 212 are symmetrically opened on the outer wall of the movable frame 231. The movable slots 212 are used to fix the plug rods 21.

[0033] As an alternative embodiment, the two plug rods 21 are respectively movably arranged inside the two movable slots 212.

[0034] The plug rod 21 is movably connected inside the movable slot 212. When the plug rod 21 is inserted into the insertion hole 13, the plug rod 21 rotates by a certain amplitude in the movable slot 212, so that the two plug rods 21 are not in a parallel state.

[0035] During use, when the pin rod 11 is inserted into the bolt hole of the connecting fitting, the second elastic member 113 is compressed, and the clamping plate 112 retracts into the accommodating groove 111; when the pin rod 11 is completely inserted into the bolt hole of the connecting fitting, the second elastic member 113 is released, causing the clamping plate 112 to open in the accommodating groove 111, clamping the pin rod 11 and fixing it inside the bolt hole.

[0036] Refer to Figures 1 to 4 , this embodiment provides a live working tool for quickly replacing pins on a transmission line, including an installation assembly 3, which includes a movable member 31 and an adjusting member 32 provided on the outer wall of the movable member 31; the movable member 31 is connected to an insulating operating rod, and the adjusting member 32 can adjust the angle of the clamping assembly 2 and install the locking pin 1 in the bolt hole of the connecting fitting through the clamping assembly 2.

[0037] One end of the movable member 31 is connected to the insulating operating rod, ensuring a safe distance between the operator and the energized equipment, reducing the risks of falling from a height and electric shock, and improving the operation safety. The other end is connected to the clamping assembly 2; the clamping assembly 2 is used to fix the locking pin 1; preferably, there are two adjusting members 32, which are arranged on the outer wall of the movable member 31 and can adjust the angle of the clamping assembly 2 to ensure that the locking pin 1 can be accurately installed in the bolt hole of the connecting fitting and improve the installation accuracy.

[0038] As an alternative embodiment, the movable member 31 includes a first connecting rod 311, and a fixed cylinder 312 is provided at one end of the first connecting rod 311, and internal threads 313 are provided on the inner wall of the fixed cylinder 312.

[0039] One end of the first connecting rod 311 is fixedly connected to the fixed cylinder 312, and the other end is connected to the adjusting member 32; the fixed cylinder 312 is used to connect the insulating operating rod, and a screw rod matching the internal threads 213 in the fixed cylinder 312 is provided on the outer wall of the insulating grounding rod. Through threaded connection, a firm connection between the fixed cylinder 312 and the insulating operating rod can be ensured, preventing loosening or falling off during the operation.

[0040] As an alternative embodiment, the adjusting member 32 includes a first toothed plate 321, a second toothed plate 322 is movably meshed with the outer wall of the first toothed plate 321, and a threaded rod 323 is movably provided inside the first toothed plate 321 and the second toothed plate 322.

[0041] There are two adjusting members 32. One of them is connected between the first connecting rod 311 and the second connecting rod 314, and the other is arranged between the second connecting rod 314 and the third connecting rod 315. Threaded holes matching the threaded rod 323 are provided on the outer walls of both the first tooth plate 321 and the second tooth plate 322. By adjusting the threaded rod 323, the first tooth plate 321 and the second tooth plate 322 can be rotated manually to adjust the angle of the clamping assembly 2. After the angle adjustment is completed, the threaded rod 323 is tightened to clamp the first tooth plate 321 and the second tooth plate 322, thus fixing the movable member 31 and preventing it from rotating due to external force when replenishing the locking pin 1.

[0042] As an alternative embodiment, the second connecting rod 314 is provided outside the first connecting rod 311, and the first connecting rod 311 and the second connecting rod 314 are connected by the adjusting member 32.

[0043] One end of the first connecting rod 311 away from the fixed cylinder 312 is fixedly connected to the first tooth plate 321, and the second tooth plate 322 at one end of the second connecting rod 314 close to the first connecting rod 311 is fixedly connected.

[0044] As an alternative embodiment, the third connecting rod 315 is provided outside the second connecting rod 314, and the second connecting rod 314 and the third connecting rod 315 are connected by the adjusting member 32.

[0045] The first tooth plate 321 of another adjusting member 32 is provided at one end of the second connecting rod 314 close to the third connecting rod 315. The first tooth plate 321 here and the second tooth plate 322 at the other end of the second connecting rod 314 are perpendicular to each other in terms of spatial position.

[0046] During use, first, the fixed cylinder 312 is threadedly connected to the insulating operating rod. Further, the insertion rod 21 is inserted into the jack 13. At this time, the second elastic member 234 is compressed, and the expansion force fixes the locking pin 1 on the outer wall of the insertion rod 21. The two adjusting members 32 are adjusted respectively according to the orientation of the bolt holes of the connecting fitting, so that the orientation of the pin rod 11 is consistent with the orientation of the bolt holes of the connecting fitting. When the locking pin 1 is inserted into the bolt hole of the connecting fitting, the second elastic member 113 automatically pops open the clamping plate 112, locking the locking pin 1 automatically in the bolt hole of the connecting fitting. At this time, by pulling out the live working tool for quickly replacing the transmission line pin with force, the locking pin 1 can be separated from the tool, completing the work of replenishing the pin of the clamp.

[0047] Finally, it should be noted that the methods and devices described in detail above are only 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 plug-in device, characterized in that: include, A locking pin (1) comprises a pin rod (11), a pin head (12) arranged at one end of the pin rod (11), and a plug hole (13) symmetrically arranged on the outer wall of the pin head (12); A clamping assembly (2) comprising an insertion rod (21) and a first elastic member (22) disposed between two of the insertion rods (21); The two insertion rods (21) can be inserted into the insertion hole (13), and the locking pin (1) is clamped by utilizing the tension of the first elastic member (22), so that a non-parallel state is formed between the two insertion rods (21), and the pin rod (11) can be inserted into the bolt hole of the connecting hardware under power to clamp the connecting hardware bolt.

2. The plug-in device according to claim 1, characterized in that: The outer wall of the pin rod (11) is provided with a receiving groove (111), and a clamping plate (112) is movably provided inside the receiving groove (111).

3. The plug-in device according to claim 2, characterized in that: A second elastic member (113) is provided inside the accommodating groove (111), and one end of the second elastic member (113) is connected to the outer wall of the clamping plate (112).

4. The plug-in device according to claim 1, characterized in that: A support frame (211) is provided outside the insertion rod (21), and two movable grooves (212) are provided on the outer wall of the support frame (211).

5. The plug-in device according to claim 1 or 4, characterized in that: The two insertion rods (21) are movably arranged inside the two movable grooves (212) respectively.

6. A live working tool for quickly replacing pins of a power transmission line, characterized by: The plug-in device comprises any one of claims 1 to 5, and further comprises: A mounting assembly (3) comprising a movable part (31) and an adjusting part (32) arranged on an outer wall of the movable part (31); The movable part (31) is connected to the insulating operating rod, and the adjusting part (32) can adjust the angle of the clamping assembly (2), and the locking pin (1) is installed in the bolt hole of the connecting hardware through the clamping assembly (2).

7. The live working tool for fast replacement of power transmission line pins according to claim 6 is characterized by: The movable member (31) comprises a first connecting rod (311), one end of which is provided with a fixing tube (312), and the inner wall of the fixing tube (312) is provided with a thread (313).

8. The live working tool for fast replacement of power transmission line pins according to claim 7 is characterized by: The adjusting member (32) comprises a first tooth plate (321), the outer wall of the first tooth plate (321) is movably meshed with a second tooth plate (322), and threaded rods (323) are movably provided inside the first tooth plate (321) and the second tooth plate (322).

9. The live working tool for fast replacement of power transmission line pins according to claim 8 is characterized in that: A second connecting rod (314) is provided outside the first connecting rod (311), and the first connecting rod (311) and the second connecting rod (314) are connected via the adjusting member (32).

10. The live working tool for fast replacement of power transmission line pins according to claim 9 is characterized in that: A third connecting rod (315) is disposed outside the second connecting rod (314), and the second connecting rod (314) and the third connecting rod (315) are connected via the adjusting member (32).

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