Built-in column type pressure limiter

Abstract

The invention discloses a built-in column type voltage limiter, and relates to the technical field of overhead line equipment, the built-in column type voltage limiter comprises a voltage limiter main body, a wire fixing fitting assembly is fixed at the top end of the voltage limiter main body, the wire fixing fitting assembly comprises a bottom block and an upper block, the bottom block is fixedly connected with the top end of the voltage limiter main body, and the upper block is fixedly connected with the bottom block. The upper block is arranged on the top surface of the bottom block, one end of the upper block is hinged to the bottom block, a clamping block is fixed to the end, far away from the end used for being hinged to the bottom block, of the upper block, an inserting assembly is arranged on the bottom block, and the inserting assembly is connected with the clamping block in an inserting mode; the opposite surfaces of the bottom block and the upper block are respectively provided with a groove for a lead to pass through. According to the built-in column type voltage limiter, the defect that the speed of fixing a power transmission conductor is low can be overcome.

Description

Technical Field

[0001] The invention relates to the technical field of overhead line equipment, and in particular to a built-in column type voltage limiter. Background Art

[0002] Built-in column voltage limiters are widely used in power systems, communication systems, industrial control systems and other fields, especially playing an important role in the protection of overhead lines.

[0003] Existing built-in column voltage limiters usually fix the transmission wires by binding wires, such as the patent with application number 202210521807.4; some also fix the transmission wires to one end of the voltage limiter by a wire pressing plate, such as the patent with application number 202322350796.0.

[0004] Both of the above two methods of fixing the transmission line have the disadvantage of slow fixing speed, resulting in low work efficiency during power repair and installation construction.

[0005] Therefore, it is necessary to develop a built-in column type pressure limiter to address the above defects. Summary of the invention

[0006] The object of the present invention is to provide a built-in column type voltage limiter which can solve the shortcoming of slow speed of fixing power transmission wires.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] The present invention discloses a built-in column type voltage limiter, comprising a voltage limiter body, a wire fixing hardware assembly being fixed on the top of the voltage limiter body, the wire fixing hardware assembly comprising a bottom block and an upper block, the bottom block being fixedly connected to the top of the voltage limiter body, the upper block being arranged on the top surface of the bottom block, one end of the upper block being hinged to the bottom block, a clamping block being fixed on one end of the upper block away from the hinged end of the bottom block, a plug-in assembly being arranged on the bottom block, the plug-in assembly being plugged into the clamping block; grooves for the wires to pass through are provided on the opposite surfaces of the bottom block and the upper block.

[0009] Preferably, two first limit plates are fixed to one end of the bottom block, and the two first limit plates are spaced apart along the axial direction of the hinge shaft, a second limit plate is fixed to one end of the upper block, the clamping block is fixed to the bottom surface of the second limit plate, and the clamping block is located between the two first limit plates;

[0010] The plug-in component is arranged in a one-to-one correspondence with the first limit plate, and the plug-in component includes a slider and a compression spring. A sliding hole is provided on the side of the first limit plate close to the card block, and a plug-in hole is provided on the card block. The plug-in hole is arranged in a one-to-one correspondence with the slider, one end of the slider is slidably inserted in the sliding hole, and the other end of the slider is slidably inserted in the plug-in hole. The compression spring is located in the sliding hole, one end of the compression spring abuts against the bottom wall of the sliding hole, and the other end of the compression spring abuts against the slider.

[0011] Preferably, the plug-in assembly further includes a pull rod, the compression spring is sleeved around the pull rod, one end of the pull rod is fixedly connected to the slider, and the other end of the pull rod slides through the bottom wall of the sliding hole and protrudes out of the first limit plate.

[0012] Preferably, the wire fixing hardware assembly further includes a connection ball, the grooves of the bottom block and the upper block are both spherical grooves, and the connection ball is movably arranged in a cavity formed by the two spherical grooves;

[0013] The wiring ball is a spherical structure composed of a first hemisphere and a second hemisphere, and semicircular through grooves matching the outer diameter of the wire are provided on the opposite surfaces of the first hemisphere and the second hemisphere.

[0014] Preferably, the wire fixing hardware assembly further comprises a self-lubricating sleeve, the outer surface of the self-lubricating sleeve matches the spherical groove, the inner surface of the self-lubricating sleeve matches the wiring ball, and the wiring ball is movably arranged in the self-lubricating sleeve;

[0015] The self-lubricating sleeve comprises a first half sleeve and a second half sleeve, wherein the first half sleeve is clamped in one of the spherical grooves, and the second half sleeve is clamped in the other of the spherical grooves.

[0016] Preferably, semicircular tubes are coaxially fixed to both ends of the semicircular through groove, and the inner diameter of the semicircular tube matches the outer diameter of the wire.

[0017] Preferably, semi-annular rails are coaxially fixed on the outer walls of the first half sleeve and the second half sleeve, a dovetail slide matching the rail is provided in the spherical groove, and the rail is slidably engaged with the dovetail slide.

[0018] Preferably, it further comprises a puncture tooth, wherein the puncture tooth is arranged in the semicircular through groove of the first hemisphere or the second hemisphere, the root of the puncture tooth is fixedly connected to the semicircular through groove, and a plurality of the puncture teeth are provided.

[0019] Compared with the prior art, the beneficial technical effects of the present invention are:

[0020] The invention discloses a built-in column type voltage limiter, which forms an opening and closing structure by hingedly connecting a bottom block and an upper block, and can conveniently and quickly fix the wire by plugging a plug-in assembly into a clamping block, and does not need to fix the power transmission wire with a binding wire or to compress the wire with a wire pressing plate by tightening bolts, thereby saving time and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 It is a cross-sectional structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the main structure of the present invention;

[0024] Figure 3 It is a right side structural schematic diagram of the wire fixing hardware assembly of the present invention;

[0025] Figure 4 It is a left-side structural schematic diagram of the wire fixing hardware assembly of the present invention;

[0026] Figure 5 It is a schematic cross-sectional view of the wire fixing hardware assembly of the present invention.

[0027] Explanation of the reference numerals in the accompanying drawings: 1. limiter body; 101. anti-icing cover; 2. bottom block; 201. first limit plate; 202. first ear; 203. stud; 3. upper block; 301. clamping block; 302. second limit plate; 303. second ear; 4. slider; 5. compression spring; 6. pull rod; 7. first hemisphere; 8. second hemisphere; 9. self-lubricating sleeve; 901. clamping rail; 10. semicircular tube; 11. piercing tooth; 12. hinge shaft. DETAILED DESCRIPTION

[0028] The core of the present invention is to provide a built-in column type voltage limiter, which can solve the disadvantage of slow speed of fixed transmission wires.

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "middle", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In a specific embodiment of the present invention, Figures 1 to 5 As shown, it includes a voltage limiter body 1, a wire fixing hardware assembly is fixed on the top of the voltage limiter body 1, and the wire fixing hardware assembly includes a bottom block 2 and an upper block 3. The bottom block 2 is fixedly connected to the top of the voltage limiter body 1, the upper block 3 is arranged on the top surface of the bottom block 2, one end of the upper block 3 is hinged to the bottom block 2, and a clamping block 301 is fixed to the end of the upper block 3 away from the hinged end of the bottom block 2. A plug-in assembly is provided on the bottom block 2, and the plug-in assembly is plugged into the clamping block 301; grooves for the wire to pass through are provided on the opposite surfaces of the bottom block 2 and the upper block 3.

[0032] Specifically, by hingedly connecting the bottom block 2 and the upper block 3, an opening and closing structure is formed. By plugging the plug-in assembly into the clamping block 301, the wires can be fixed conveniently and quickly. There is no need to fix the power transmission wires with binding wires or to tighten the wires with the wire pressing plates by tightening bolts, thereby saving time and improving work efficiency.

[0033] The voltage limiter body 1 belongs to the prior art, and the voltage limiter body 1 can adopt the voltage limiter disclosed in the patent publication number CN213601708U, so the voltage limiter body 1 is not described here in detail. In the present invention, an anti-icing cover 101 is provided between the voltage limiter body 1 and the wire fixing hardware assembly.

[0034] In some embodiments, Figure 1 , 2 As shown in FIG. 4 , a pair of first ears 202 are fixed at one end of the bottom block 2 , and a second ear 303 is fixed at one end of the upper block 3 . The first ear 202 and the second ear 303 are hingedly connected via a hinge shaft 12 .

[0035] In some embodiments, a stud 203 is fixedly connected to the bottom surface of the bottom block 2 , and the stud 203 is threadedly connected to the pressure limiter body 1 .

[0036] In some embodiments, two first limit plates 201 are fixed to one end of the bottom block 2, and the two first limit plates 201 are spaced apart along the axial direction of the hinge shaft 12, a second limit plate 302 is fixed to one end of the upper block 3, a clamping block 301 is fixed to the bottom surface of the second limit plate 302, and the clamping block 301 is located between the two first limit plates 201;

[0037] The plug-in assembly is arranged in a one-to-one correspondence with the first limit plate 201, and the plug-in assembly includes a slider 4 and a compression spring 5. A sliding hole is provided on the side of the first limit plate 201 close to the block 301, and a plug-in hole is provided on the block 301. The plug-in hole and the slider 4 are arranged in a one-to-one correspondence. One end of the slider 4 is slidably inserted in the sliding hole, and the other end of the slider 4 is slidably inserted in the plug-in hole. The compression spring 5 is located in the sliding hole, and one end of the compression spring 5 abuts against the bottom wall of the sliding hole, and the other end of the compression spring 5 abuts against the slider 4.

[0038] Specifically, the two sliders 4 are pressed by hand or a tool, and the sliders 4 completely enter the sliding holes. The upper block 3 is rotated to allow the clamping block 301 to enter between the two sliders 4. The sliders 4 are released, and the upper block 3 is continued to be rotated, so that the sliders 4 and the clamping block 301 are in sliding contact. When the plug-in hole is aligned with the slider 4, one end of the slider 4 is inserted into the plug-in hole under the elastic force of the compression spring 5.

[0039] In some embodiments, the plug-in assembly further includes a pull rod 6, a compression spring 5 is sleeved around the pull rod 6, one end of the pull rod 6 is fixedly connected to the slider 4, and the other end of the pull rod 6 slides through the bottom wall of the sliding hole and protrudes out of the first limit plate 201.

[0040] Specifically, the upper block 3 is rotated to make the clamping block 301 rest on the two sliders 4, and then the two pull rods 6 are pulled to make the sliders 4 completely enter the sliding holes. Then the upper block 3 continues to rotate under its own gravity and contacts the top surface of the bottom block 2. At this time, the plug hole is aligned with the slider 4, and the pull rod 6 is released. Then, one end of the slider 4 is inserted into the plug hole under the elastic force of the compression spring 5. This embodiment is simpler and faster than the method of pressing the slider 4, which is conducive to improving work efficiency.

[0041] In some embodiments, the pull rod 6 can be bonded, welded or threaded to the slider 4. Figure 3 The end of the pull rod 6 shown in the figure is provided with a threaded section, which is threadedly connected to the slider 4 through the threaded section. An end cap is also fixed to the end of the pull rod 6 that protrudes out of the first limit plate 201. The staff can hold the end cap and pull the pull rod 6 through the end cap, which is more convenient than directly pulling the pull rod 6, or use a tool to clamp it between the end cap and the first limit plate 201, thereby freeing both hands; at the same time, the setting of the end cap can also limit the pull rod 6, and the pull rod 6 limits the slider 4, thereby preventing the slider 4 from slipping out of the sliding hole and being lost.

[0042] In some embodiments, the wire fixing hardware assembly further includes a wiring ball, the grooves of the bottom block 2 and the upper block 3 are both spherical grooves, and the wiring ball is movably arranged in a cavity formed by the two spherical grooves;

[0043] The connection ball is a spherical structure composed of a first hemisphere 7 and a second hemisphere 8. Semicircular through grooves matching the outer diameter of the wire are provided on the opposite surfaces of the first hemisphere 7 and the second hemisphere 8.

[0044] Specifically, the wire will dance under the action of wind. If the wire only passes through the two grooves, the wire will bend repeatedly at the contact position with the edge of the groove, and the wire will rub against the edge of the groove, causing the wire to wear or even break. In this embodiment, the wire passes through the chamber formed by the two semicircular grooves, and the wiring ball can rotate with the wire, thereby effectively reducing the bending angle of the wire and preventing the wire from being worn, thereby extending the service life of the wire.

[0045] In some embodiments, the wire fixing hardware assembly further includes a self-lubricating sleeve 9, the outer surface of the self-lubricating sleeve 9 matches the spherical groove, the inner surface of the self-lubricating sleeve 9 matches the wiring ball, and the wiring ball is movably arranged in the self-lubricating sleeve 9;

[0046] The self-lubricating sleeve 9 comprises a first half sleeve and a second half sleeve, wherein the first half sleeve is clamped in a spherical groove, and the second half sleeve is clamped in another spherical groove.

[0047] Specifically, the self-lubricating sleeve 9 can prevent the connection ball from directly contacting the spherical groove and causing wear, and ensure the flexible rotation ability of the connection ball. The self-lubricating sleeve 9 can be a graphite copper sleeve or a PTFE sleeve or other lubricating sleeves with self-lubricating ability.

[0048] In some embodiments, a semicircular tube 10 is coaxially fixed to both ends of the semicircular through groove, and the inner diameter of the semicircular tube 10 matches the outer diameter of the wire.

[0049] Specifically, the semicircular tube 10 can protect the wire to prevent the edges of the bottom block 2, the upper block 3 or the self-lubricating sleeve 9 from rubbing and generating shear force on the wire when the wire dances. In a further optimization scheme, the edge of the inner wall of the semicircular tube 10 is set to an arc chamfer to prevent the wire from being worn.

[0050] In some embodiments, a semi-annular rail 901 is coaxially fixed on the outer walls of the first half sleeve and the second half sleeve, a dovetail slide matching the rail 901 is provided in the spherical groove, and the rail 901 is slidably engaged with the dovetail slide.

[0051] Specifically, the rail 901 cooperates with the dovetail slideway to prevent the first half sleeve and the second half sleeve from falling out of the spherical groove, and is easy to inspect and replace.

[0052] In some embodiments, a puncture tooth 11 is further included. The puncture tooth 11 is disposed in a semicircular through groove of the first hemisphere 7 or the second hemisphere 8. The root of the puncture tooth 11 is fixedly connected to the semicircular through groove. A plurality of puncture teeth 11 are provided.

[0053] Specifically, in some lines, wires with insulation are used. By pressing the upper block 3, the upper block 3 squeezes the wire, and the tip of the piercing tooth 11 pierces the insulation and makes electrical contact with the wire, thereby achieving equal potential between the wire fixing hardware and the wire, avoiding arcing between the two and causing wire breakage. With this implementation, workers do not need to strip the wire, which improves work efficiency.

[0054] The working principle of a built-in column type voltage limiter of the present invention is as follows: the piercing tooth 11 in the attached figure is located on the first hemisphere 7, the first hemisphere 7 is located in the spherical groove of the bottom block 2, the upper block 3 is opened and the second hemisphere 8 is removed, the wire is placed in the semicircular through groove of the first hemisphere 7, the second hemisphere 8 is buckled on the wire, the upper block 3 is rotated and the clamping block 301 is placed on the two sliders 4, at this time, a tool can be used to clamp between the end cap and the first limiting plate 201, then the slider 4 completely enters the sliding hole, the upper block 3 is pressed, and the upper block 3 squeezes the wire, the tip of the piercing tooth 11 pierces the insulating skin and electrically contacts the wire, thereby realizing the equipotential between the wire fixing hardware and the wire, the tool clamped between the end cap and the first limiting plate 201 is removed, and one end of the slider 4 is inserted into the plug hole under the elastic force of the compression spring 5 to complete the fixing of the wire.

[0055] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other, and the embodiments can be combined with each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0056] The above embodiments are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A built-in column type voltage limiter, comprising a voltage limiter body (1), a wire fixing hardware assembly being fixed to the top of the voltage limiter body (1), characterized in that: The wire fixing hardware assembly comprises a bottom block (2) and an upper block (3); the bottom block (2) is fixedly connected to the top of the voltage limiter body (1); the upper block (3) is arranged on the top surface of the bottom block (2); one end of the upper block (3) is hinged to the bottom block (2); a clamping block (301) is fixed to the end of the upper block (3) away from the hinged connection with the bottom block (2); a plug-in assembly is arranged on the bottom block (2); the plug-in assembly is plugged into the clamping block (301); grooves for the wire to pass through are provided on the opposite surfaces of the bottom block (2) and the upper block (3).

2. The internal column type pressure limiter according to claim 1, characterized in that: Two first limit plates (201) are fixed to one end of the bottom block (2), and the two first limit plates (201) are arranged at intervals along the axial direction of the hinge shaft (12); a second limit plate (302) is fixed to one end of the upper block (3); the clamping block (301) is fixed to the bottom surface of the second limit plate (302), and the clamping block (301) is located between the two first limit plates (201); The plug-in assembly is arranged in a one-to-one correspondence with the first limiting plate (201), and the plug-in assembly comprises a slider (4) and a compression spring (5). A sliding hole is provided on a side of the first limiting plate (201) close to the clamping block (301), and a plug-in hole is provided on the clamping block (301). The plug-in hole is arranged in a one-to-one correspondence with the slider (4). One end of the slider (4) is slidably inserted into the sliding hole, and the other end of the slider (4) is slidably inserted into the plug-in hole. The compression spring (5) is located in the sliding hole, and one end of the compression spring (5) is in contact with the bottom wall of the sliding hole, and the other end of the compression spring (5) is in contact with the slider (4).

3. The built-in column type pressure limiter according to claim 2, characterized in that: The plug-in assembly also includes a pull rod (6), the compression spring (5) is sleeved around the pull rod (6), one end of the pull rod (6) is fixedly connected to the slider (4), and the other end of the pull rod (6) slides through the bottom wall of the sliding hole and protrudes out of the first limit plate (201).

4. The internal column type pressure limiter according to claim 1, characterized in that: The wire fixing hardware assembly also includes a connection ball, the grooves of the bottom block (2) and the upper block (3) are both spherical grooves, and the connection ball is movably arranged in a cavity formed by the two spherical grooves; The wiring ball is a spherical structure composed of a first hemisphere (7) and a second hemisphere (8), and semicircular through grooves matching the outer diameter of the wire are provided on the opposite surfaces of the first hemisphere (7) and the second hemisphere (8).

5. The internal column type pressure limiter according to claim 4, characterized in that: The wire fixing hardware assembly also includes a self-lubricating sleeve (9), the outer surface of the self-lubricating sleeve (9) matches the spherical groove, the inner surface of the self-lubricating sleeve (9) matches the wiring ball, and the wiring ball is movably arranged in the self-lubricating sleeve (9); The self-lubricating sleeve (9) comprises a first half sleeve and a second half sleeve, wherein the first half sleeve is clamped in one of the spherical grooves, and the second half sleeve is clamped in the other of the spherical grooves.

6. The built-in column type pressure limiter according to claim 4 or 5, characterized in that: A semicircular tube (10) is coaxially fixed to both ends of the semicircular through groove, and the inner diameter of the semicircular tube (10) matches the outer diameter of the wire.

7. The internal column type pressure limiter according to claim 5, characterized in that: A semi-annular guide rail (901) is coaxially fixed on the outer walls of the first half sleeve and the second half sleeve, a dovetail slideway matching the guide rail (901) is provided in the spherical groove, and the guide rail (901) is slidably engaged with the dovetail slideway.

8. The internal column type pressure limiter according to claim 4, characterized in that: It also includes a puncture tooth (11), which is arranged in the semicircular through groove of the first hemisphere (7) or the second hemisphere (8), the root of the puncture tooth (11) is fixedly connected to the semicircular through groove, and a plurality of puncture teeth (11) are provided.

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