High-voltage isolation knife switch

Abstract

The utility model relates to a high-voltage isolation knife switch, which consists of a base, a first clamping plate, a mounting bolt, a second clamping plate, a first insulating column, a second insulating column, a first partition plate, a second partition plate, a moving contact part and a static contact part, the first insulating column and the second insulating column are respectively provided with a first partition plate and a second partition plate, the first insulating column is provided with a moving contact part, the second insulating column is provided with a static contact part, two side edges of the base are fixedly connected with first clamping plates, the first clamping plates are rotatably provided with mounting bolts, and the first clamping plates are fixedly connected with second clamping plates. And a second clamping plate is arranged on the first clamping plate in a sliding manner and is in threaded connection with the mounting bolt. By arranging the first clamping plate, the mounting bolt and the second clamping plate on the base, the second clamping plate is adjusted upwards through the mounting bolt and matched with the first clamping plate to clamp the telegraph pole cross arm, rapid mounting is achieved, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of isolating switches, in particular to a high-voltage isolating knife switch. Background Art

[0002] The isolating knife switch is a switching device used to isolate the circuit connection between the power supply and the load. It is usually composed of two main contacts. Its working principle is to separate the two main contacts through manual or automatic operation to cut off the connection between the power supply and the load to achieve isolation protection.

[0003] At present, in the installation of the existing high-voltage isolating knife switch, bolts and nuts are usually used to install it on the cross arm of the electric pole, and in order to ensure the installation stability, multiple bolts are generally required, which makes the installation more troublesome and inconvenient, and seriously affects the work efficiency.

[0004] Therefore, there is an urgent need to provide a high-voltage isolating knife switch that can be quickly installed. Utility Model Content

[0005] In order to overcome the shortcomings of existing high-voltage isolating knife switches, which are usually installed on the crossarm of a utility pole by means of bolts and nuts, and generally require the use of multiple bolts to ensure installation stability, resulting in troublesome and inconvenient installation and serious impact on work efficiency, the utility model provides a high-voltage isolating knife switch that can be quickly installed.

[0006] To solve the above problems, the utility model adopts the following technical scheme: a high-voltage isolating knife switch, which is composed of a base, a first clamping plate, a mounting bolt, a second clamping plate, a first insulating column, a second insulating column, a first partition, a second partition, a moving contact part and a static contact part. The base is provided with a first insulating column and a second insulating column, and the first insulating column and the second insulating column are respectively provided with a first partition and a second partition. The first insulating column is provided with a moving contact part, and the moving contact part is composed of a mounting seat, a rotating rod, a first torsion spring, a first metal sheet, a second metal sheet and a mounting block. The mounting seat is mounted on the first partition, and the first metal sheet and the second metal sheet are rotatably mounted on the mounting seat through the rotating rod. The first torsion spring is sleeved on The rotating rod is used to assist the first metal sheet and the second metal sheet to rotate upward. A static contact part is arranged on the second insulating column. Circuit connection and isolation are realized by separation and combination of the moving contact part and the static contact part. The static contact part is composed of a clamp seat, a first elastic member and a card bead. The clamp seat is arranged on the second partition plate. The card bead is slidably installed on the clamp seat, and is used to lock the mounting block when the moving contact part and the static contact part are closed. One end of the first elastic member is connected to the clamp seat, and the other end is connected to the card bead. First clamp plates are fixedly connected to both sides of the base. A mounting bolt is rotatably arranged on the first clamp plate. A second clamp plate is slidably arranged on the first clamp plate. The second clamp plate is threadedly connected to the mounting bolt.

[0007] Furthermore, it also includes a first guide frame, a first guide rod, a second elastic member, a clamping plate, a wedge block and a handwheel, the first metal sheet and the second metal sheet are both provided with a first guide frame, the first guide frame is slidably provided with a first guide rod, the first guide rod is fixedly connected with a clamping plate, the first guide rod is sleeved with a second elastic member, the two first guide frames are jointly slidably provided with a wedge block, and handwheels are provided on both sides of the wedge block.

[0008] Furthermore, it also includes a second guide frame, a buffer plate, a third elastic member, a second guide rod and a third guide rod. The second guide frame is fixedly connected to the mounting seat, and a buffer plate is slidably arranged in the second guide frame. A third elastic member is connected between the buffer plate and the second guide frame. The first metal sheet and the second metal sheet are jointly provided with a second guide rod, and the second guide rod slides in the second guide frame. The third guide rod is fixedly connected to the second guide frame, and the third guide rod is used to guide the buffer plate.

[0009] Furthermore, it also includes a second mounting frame, a first connecting rod, a third mounting frame and a second connecting rod. The base is fixedly connected to a symmetrically distributed second mounting frame, and the two second mounting frames are rotatably provided with a third mounting frame through the first connecting rod. The two third mounting frames are rotatably connected to the first metal sheet and the second metal sheet through the second connecting rod.

[0010] Furthermore, it also includes an anti-corrosion sleeve, and the first insulating column and the second insulating column are both covered with the anti-corrosion sleeve.

[0011] Furthermore, a buffer pad is included, and a buffer pad is provided on a side of the buffer plate that contacts the second guide rod.

[0012] Compared with the prior art, the utility model has the following technical effects: 1. By arranging the first clamping plate, the mounting bolts and the second clamping plate on the base, the second clamping plate is raised by the mounting bolts and cooperates with the first clamping plate to clamp the cross arm of the electric pole, thereby achieving quick installation and saving time and effort.

[0013] 2. By using the clamping plate and the wedge block to apply pressure to the installation clamp block, it is effectively prevented that the moving contact part bounces up when the knife switch is used.

[0014] 3. By setting the second mounting frame, the first connecting rod, the third mounting frame and the second connecting rod, the rotation range of the moving contact part can be limited to prevent the moving contact part from rotating too much and colliding with surrounding equipment to cause damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0016] Figure 2 It is a three-dimensional cross-sectional structural schematic diagram of the first clamping plate, the mounting bolts and the second clamping plate of the utility model.

[0017] Figure 3 It is a three-dimensional cross-sectional structural schematic diagram of the clamping seat, the first elastic member and the clamping bead of the utility model.

[0018] Figure 4 It is a three-dimensional cross-sectional structural schematic diagram of the first guide rod, the second elastic member and the clamping plate of the utility model.

[0019] Figure 5 It is a three-dimensional cross-sectional structural schematic diagram of the buffer plate, the second guide rod and the third guide rod of the utility model.

[0020] Figure 6 It is a three-dimensional structural schematic diagram of the first connecting rod, the third mounting bracket and the second connecting rod of the utility model.

[0021] In the accompanying drawings: 1, base, 101, first clamping plate, 102, mounting bolt, 103, second clamping plate, 2, first insulating column, 201, second insulating column, 3, first partition, 301, second partition, 4, mounting seat, 5, rotating rod, 6, first torsion spring, 7, first metal sheet, 701, second metal sheet, 8, mounting block, 9, clamping seat, 10, first elastic member, 11, card bead, 12, first guide frame, 13, first guide rod, 14, second elastic member, 15, clamping plate, 16, wedge block, 17, hand wheel, 18, second guide frame, 19, buffer plate, 20, third elastic member, 21, second guide rod, 22, third guide rod, 23, second mounting frame, 24, first connecting rod, 25, third mounting frame, 26, second connecting rod, 27, anti-corrosion sleeve, 28, buffer pad. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1

[0024] See also Figure 1-Figure 3A high-voltage isolating knife switch, comprising a base 1, a first clamping plate 101, a mounting bolt 102, a second clamping plate 103, a first insulating column 2, a second insulating column 201, a first partition 3, a second partition 301, a moving contact part, a static contact part and an anti-corrosion sleeve 27. The first insulating column 2 and the second insulating column 201 are respectively provided on the left and right sides of the top of the base 1. The first insulating column 2 and the second insulating column 201 are both provided with an anti-corrosion sleeve 27 on the outside to protect them from corrosive liquids. The first insulating column 201 is provided with a first partition 3 and a second partition 301 respectively on the first insulating column 2 and the second insulating column 201. The top of the first insulating column 2 is provided with a moving contact part, and the moving contact part is composed of a mounting seat 4, a rotating rod 5, a first torsion spring 6, a first metal sheet 7, a second metal sheet 701 and a mounting block 8. The mounting seat 4 is mounted on the top of the first partition 3. The first metal sheet 7 and the second metal sheet 701 are rotatably mounted on the mounting seat 4 through the rotating rod 5. The first torsion spring 6 is sleeved on the first torsion spring 6. On the rotating rod 5, the second metal sheet 701 and the first metal sheet 7 can be assisted to rotate upward under the torsion elastic force of the first metal sheet 7. A static contact part is arranged at the top of the second insulating column 201, and the circuit connection and isolation are realized by the separation and combination of the moving contact part and the static contact part. The static contact part is composed of a clamp seat 9, a first elastic member 10 and a card bead 11. The clamp seat 9 is arranged at the top of the second partition 301, and the card bead 11 is slidably installed on the clamp seat 9, which is used for closing the moving contact part and the static contact part. The mounting block 8 is locked, one end of the first elastic member 10 is connected to the clamp seat 9, and the other end is connected to the clamping bead 11, first clamping plates 101 are fixedly connected to both sides of the base 1, a mounting bolt 102 is rotatably provided on the first clamping plate 101, a second clamping plate 103 is slidably provided on the first clamping plate 101, the second clamping plate 103 is threadedly connected to the mounting bolt 102, the mounting bolt 102 is rotated to adjust the position of the second clamping plate 103 and cooperate with the first clamping plate 101 to realize the clamping installation of the device.

[0025] During installation, turn the mounting bolt 102 to adjust the second clamping plate 103 upward so that the second clamping plate 103 cooperates with the first clamping plate 101 to clamp the cross arm of the pole to complete the installation. When the circuit needs to be isolated, pull up the first metal sheet 7 and the second metal sheet 701, and the first torsion spring 6 helps the first metal sheet 7 and the second metal sheet 701 to bounce up, so that the mounting block 8 is separated from the clamp seat 9 to achieve circuit isolation. When the first metal sheet 7 and the second metal sheet 701 are reset, the mounting block 8 is clamped into the clamp seat 9 and locked by the clamping bead 11 to achieve circuit connectivity.

[0026] Example 2

[0027] Based on Example 1, please refer to Figure 4 , also includes a first guide frame 12, a first guide rod 13, a second elastic member 14, a clamping plate 15, a wedge block 16 and a hand wheel 17. The first metal sheet 7 and the second metal sheet 701 are both provided with a first guide frame 12 at their left ends. The first guide frame 12 is slidably provided with a first guide rod 13. The bottom end of the first guide rod 13 is fixedly connected with a clamping plate 15 by welding. The first guide rod 13 is sleeved with a second elastic member 14. The two ends of the second elastic member 14 are respectively connected to the first guide rod 13 and the clamping plate 15. The two first guide frames 12 are jointly slidably provided with a wedge block 16. Hand wheels 17 are provided on both sides of the wedge block 16.

[0028] After the moving contact part and the stationary contact part are closed, the clamping plate 15 is used to clamp the wedge block 16 and fix it to the mounting block 8, so that the wedge block 16 applies pressure to the mounting block 8, which can effectively prevent the moving contact part from bouncing up when the knife switch is used.

[0029] See also Figure 4 and Figure 5 , also includes a second guide frame 18, a buffer plate 19, a third elastic member 20, a second guide rod 21, a third guide rod 22 and a buffer pad 28, the second guide frame 18 is fixedly connected to the mounting seat 4 by welding, the buffer plate 19 is slidably arranged in the second guide frame 18, and the third elastic member 20 is connected between the buffer plate 19 and the second guide frame 18, the first metal sheet 7 and the second metal sheet 701 are jointly provided with a second guide rod 21, the second guide rod 21 slides in the second guide frame 18, when the moving contact part is opened, the second guide rod 21 can contact the buffer plate 19, so that the buffer plate 19 compresses the third elastic member 20 for buffering, the second guide frame 18 is fixedly connected with the third guide rod 22, the third guide rod 22 is used to guide the buffer plate 19 to ensure the stable movement of the buffer plate 19, and the side of the buffer plate 19 in contact with the second guide rod 21 is provided with a buffer pad 28 for protecting the buffer plate 19 and reducing the impact on the buffer plate 19.

[0030] When the moving contact part is separated from the stationary contact part, the first metal sheet 7 and the second metal sheet 701 bounce upwards, and at the same time, the second guide rod 21 moves along the second guide frame 18 and contacts the buffer plate 19, and the buffer plate 19 is used to compress the third elastic member 20 for buffering, thereby preventing the first metal sheet 7 and the second metal sheet 701 from being damaged due to excessive impact force when they bounce up.

[0031] See also Figure 6, also includes a second mounting frame 23, a first connecting rod 24, a third mounting frame 25 and a second connecting rod 26. Two second mounting frames 23 symmetrically distributed front and back are fixedly connected to the top of the base 1. The two second mounting frames 23 are rotatably provided with a third mounting frame 25 through the first connecting rod 24. The two third mounting frames 25 are rotatably connected to the first metal sheet 7 and the second metal sheet 701 through the second connecting rod 26.

[0032] When the moving contact part bounces up, the third mounting frame 25 is used to hold the first metal sheet 7 and the second metal sheet 701 to limit the rotation range, so as to prevent the first metal sheet 7 and the second metal sheet 701 from rotating too much and colliding with surrounding equipment to cause damage.

[0033] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-voltage isolating knife switch, comprising a base (1), a first insulating column (2), a second insulating column (201), a first partition (3), a second partition (301), a moving contact part and a stationary contact part, wherein the base (1) is provided with the first insulating column (2) and the second insulating column (201), the first insulating column (2) and the second insulating column (201) are respectively provided with the first partition (3) and the second partition (301), the first insulating column (2) is provided with the moving contact part, and the moving contact part comprises a mounting seat (4), a rotating rod (5), a first torsion spring (6), a first metal sheet (7), a second metal sheet (701) and a mounting block (8), the mounting seat (4) is mounted on the first partition (3), the first metal sheet (7) and the second metal sheet (701) are connected by the rotating rod (5) is rotatably mounted on the mounting seat (4), the first torsion spring (6) is sleeved on the rotating rod (5) to assist the first metal sheet (7) and the second metal sheet (701) to rotate upward, the second insulating column (201) is provided with a static contact part, and the circuit connection and isolation are realized by the separation and combination of the moving contact part and the static contact part, the static contact part is composed of a clamping seat (9), a first elastic member (10) and a card bead (11), the clamping seat (9) is arranged on the second partition plate (301), the card bead (11) is slidably mounted on the clamping seat (9), and is used to lock the mounting block (8) when the moving contact part and the static contact part are closed, one end of the first elastic member (10) is connected to the clamping seat (9), and the other end is connected to the card bead (11), characterized in that A first clamping plate (101), a mounting bolt (102) and a second clamping plate (103), the first clamping plate (101) is fixedly connected to both sides of the base (1), the mounting bolt (102) is rotatably arranged on the first clamping plate (101), the second clamping plate (103) is slidably arranged on the first clamping plate (101), and the second clamping plate (103) is threadedly connected to the mounting bolt (102).

2. A high voltage isolating knife switch according to claim 1, characterized in that: The invention also comprises a first guide frame (12), a first guide rod (13), a second elastic member (14), a clamping plate (15), a wedge block (16) and a hand wheel (17); the first metal sheet (7) and the second metal sheet (701) are both provided with the first guide frame (12); the first guide rod (13) is slidably provided on the first guide frame (12); the clamping plate (15) is fixedly connected to the first guide rod (13); the second elastic member (14) is sleeved on the first guide rod (13); the two first guide frames (12) are jointly provided with a wedge block (16) in a slidable manner; and hand wheels (17) are provided on both sides of the wedge block (16).

3. A high voltage isolating knife switch according to claim 1, characterized in that: The invention also comprises a second guide frame (18), a buffer plate (19), a third elastic member (20), a second guide rod (21) and a third guide rod (22); the second guide frame (18) is fixedly connected to the mounting seat (4); the buffer plate (19) is slidably arranged in the second guide frame (18); the third elastic member (20) is connected between the buffer plate (19) and the second guide frame (18); the first metal sheet (7) and the second metal sheet (701) are jointly provided with a second guide rod (21); the second guide rod (21) slides in the second guide frame (18); the third guide rod (22) is fixedly connected to the second guide frame (18); the third guide rod (22) is used to guide the buffer plate (19).

4. A high voltage isolating knife switch according to claim 1, characterized in that: It also includes a second mounting frame (23), a first connecting rod (24), a third mounting frame (25) and a second connecting rod (26); the base (1) is fixedly connected with symmetrically distributed second mounting frames (23); the two second mounting frames (23) are rotatably provided with a third mounting frame (25) via the first connecting rod (24); the two third mounting frames (25) are rotatably connected to the first metal sheet (7) and the second metal sheet (701) via the second connecting rod (26).

5. A high voltage isolating knife switch according to claim 1, characterized in that: It also includes an anti-corrosion sleeve (27), and the first insulating column (2) and the second insulating column (201) are both covered with the anti-corrosion sleeve (27) on their exteriors.

6. A high voltage isolating knife switch according to claim 3, characterized in that: It also includes a buffer pad (28), and a buffer pad (28) is provided on a surface of the buffer plate (19) that contacts the second guide rod (21).

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