Isolating switch static contact

Abstract

The utility model relates to the field of power system application equipment, and discloses a static contact of an isolating switch. The device is mainly composed of a support, a wire outlet plate, a moving contact, a contact piece, a contact piece pressure spring, a screw, a bending plate, a mounting block, a screw rod, a pressure spring, a pin I with a hole, a flat gasket I, a cotter pin I, a pin II with a hole, a flat gasket II, a cotter pin II, a spring washer, a nut, a bolt I and a bolt II. A wire outlet plate and contact pieces of the static contact are in movable connection, when the static contact is switched on, when the movable contact is inserted into the contact pieces of the static contact, the pressure of a contact piece pressure spring is overcome, clamping of four groups of upper and lower contact pieces is expanded, the contact pieces form a stress lever, the clamping force of the other ends of the contact pieces to the wire outlet plate is increased, and the wire outlet plate and the movable contact are clamped by the elliptical curved surfaces of the wire outlet plate and the movable contact. The contact spring is tangent to the end face of the contact piece and is in line contact, thereby having better conductive performance and reducing closing resistance. The utility model has the advantages of reasonable structural design, good conductivity and small operating force.

Description

Technical Field

[0001] The utility model relates to the field of power system application equipment, in particular to a static contact of an isolating switch. Background Art

[0002] Isolators are the most widely used type of switchgear in power systems, used to protect equipment. In recent years, with the continuous advancement of technology and the growing demand for power equipment, the use of isolators has also increased significantly. Currently, in my country's high-voltage isolators, the static contacts and outlet plates are mostly connected by surface-contact lap joints, which require high surface roughness. Rough conductive surfaces increase resistance and cause heating of the conductive parts. Furthermore, the static contact has only one end in dynamic contact, which can easily cause jamming and lead to inflexible switch operation. This increases resistance when the isolator is opened and closed, prolonging the opening and closing time and causing equipment failure. Utility Model Content

[0003] In order to solve the above-mentioned deficiencies in the prior art, the utility model provides a static contact of an isolating switch.

[0004] The utility model is implemented by the following technical solutions:

[0005] A static contact of an isolating switch comprises a bracket, an outlet plate, a moving contact, a contact piece, a contact piece compression spring, a screw, a bent plate, a mounting block, a screw, a compression spring, a pin with a hole I, a flat washer I, a cotter pin I, a pin with a hole II, a flat washer II, a cotter pin II, a spring washer, a nut, a bolt I and a bolt II; the outlet plate and the contact piece are dynamically connected; when the switch is closed, when the moving contact is inserted into the contact piece of the static contact, the pressure of the contact piece compression spring is overcome, the clamping of the upper and lower contact pieces is stretched open, and the contact piece forms a force lever, so that the clamping force of the other end of the contact piece on the outlet plate is increased.

[0006] Furthermore, the contact pieces are placed on the screw holes of the mounting block and aligned with each other, and screws are inserted into the contact piece compression spring and the contact piece in sequence and then screwed into the screw holes of the mounting block. After installation, the screws are tightened and each screw is adjusted to the height of the contact piece.

[0007] The bent plates are installed on both sides of the mounting block and fastened by screwing in bolts I;

[0008] The outlet plate is inserted between the contact pieces on one side and connected to the mounting block;

[0009] Use the hole pin Ⅰ to pass through the flat washer Ⅰ, bent plate, flat washer Ⅰ, outlet plate, flat washer Ⅰ, bent plate, flat washer Ⅰ in sequence, then pass the two split pins Ⅰ through the holes at both ends of the hole pin Ⅰ respectively, and break the split pin Ⅰ to complete the installation;

[0010] The moving contact is inserted between the contact pieces on the other side;

[0011] With the hole pin II in turn into the flat pad II, the bent plate, the flat pad II, the screw hole, the flat pad II, the bent plate, the flat pad II, then two split pin II is respectively inserted into the hole of both ends of the hole pin II, split pin II is opened, the static contact assembly installation is completed; the hole of one end of the screw has been inserted into the hole pin II, and is connected with the static contact assembly, the other end is inserted into the waist hole of the support in turn, the nut is screwed on the screw, the spring washer is inserted, and then another nut is screwed; the two holes of the outlet board are aligned with the two screw holes at the top of the support, and the bolt II is screwed in.

[0012] Further, the contact piece is a long strip-shaped waist shape, and a round hole is arranged in the middle.

[0013] Further, one end of the outlet board is provided with two oval curved surfaces, which are tangent to the end face of the contact piece and in line contact, and the other end is provided with a plate.

[0014] Further, one end of the movable contact is provided with two oval curved surfaces, which are tangent to the end face of the contact piece and in line contact, and the oval curved surface end of the outlet board is the same height as the oval curved surface end of the movable contact.

[0015] Further, the mounting block is H-shaped, and four screw holes are arranged above and below.

[0016] Compared with the prior art, the technical effect of the utility model lies in: the structure design is reasonable, the conductivity is good, and the operation force is small. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a static contact schematic diagram of the utility model.

[0018] Figure 2 It is a static contact sectional view of the utility model.

[0019] Figure 3 It is a static contact exploded view of the utility model.

[0020] REFERENCE SIGNS:

[0021] Support, 2-outlet board, 3-movable contact, 4-contact piece, 5-contact spring, 6-screw, 7-bent plate, 8-mounting block, 9-screw, 10-spring, 11-hole pin I, 12-flat pad I, 13-split pin I, 14-hole pin II,

[0022] 15-flat pad II, 16-split pin II, 17-spring washer, 18-nut, 19-bolt I, 20-bolt II. DETAILED DESCRIPTION

[0023] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] Unless otherwise defined, the technical or scientific terms used in this invention shall have the common meanings understood by persons with ordinary skills in the field to which this invention belongs. “I”, “II”, and similar words used in this invention do not indicate any order, quantity or importance, but are only used to distinguish different components. “Connect” or “connected” and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. “Up”, “down”, etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0025] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0026] The utility model discloses a static contact of an isolating switch, which has reasonable structural design, good conductive performance and small operating force.

[0027] See also Figure 1 、 Figure 2 、 Figure 3 A static contact of an isolating switch consists of a bracket 1, an outlet plate 2, a moving contact 3, a contact piece 4, a contact piece compression spring 5, a screw 6, a bent plate 7, a mounting block 8, a screw 9, a compression spring 10, a pin with a hole I 11, a flat washer I 12, a cotter pin I 13, a pin with a hole II 14, a flat washer II 15, a cotter pin II 16, a spring washer 17, a nut 18, a bolt I 19, and a bolt II 20; the outlet plate 2 and the contact piece 4 are dynamically connected. When the switch is closed, when the moving contact 3 is inserted into the contact piece 4 of the static contact, the pressure of the contact piece compression spring 5 is overcome, and the clamping of the upper and lower four groups of contact pieces 4 is stretched open. The contact piece 4 forms a force lever, which increases the clamping force of the other end of the contact piece 4 on the outlet plate 2. Specifically, first place the contact piece 4 on the eight screw holes of the mounting block 8 and align them. Then use screws 6 to penetrate the contact piece compression spring 5 and the contact piece 4 in sequence and screw them into the screw holes of the mounting block 8. Install the four on top and the four on the bottom symmetrically. After installation, tighten the screws 6 and adjust the height of each screw 6 to the height of the contact piece 4 to ensure that the height is consistent to obtain a uniform spring force (see Figure 2 ); Press the bent plate 7 Figure 1 Install the position shown on the mounting block assembly and tighten the bolts Ⅰ19; press the outlet plate 2 Figure 1The position shown is inserted between the contact 4 of the mounting block assembly, and the pin 111 with holes is sequentially inserted into the flat washer 112, the bent plate 7, the flat washer 112, the outgoing line plate 2, the flat washer 112, the bent plate 7, the flat washer 112, and then the two split pins 113 are respectively inserted into the holes at both ends of the pin 111 with holes, and the split pins 113 are pried open to complete the installation (see Figure 1 The pin 114 with holes is sequentially inserted into the flat washer 115, the bent plate 7, the flat washer 115, the hole of the screw rod 9, the flat washer 115, the bent plate 7, the flat washer 115, and then the two split pins 116 are respectively inserted into the holes at both ends of the pin 114 with holes, and the split pins 116 are pried open to complete the static contact assembly (see Figure 1 The hole at one end of the screw rod 9 has been inserted into the pin 114 with holes and connected with the static contact assembly, and the other end is sequentially inserted into the flat washer 112, the compression spring 10, the flat washer 112, the nut 118, and then inserted into the waist hole of the support 1 (see Figure 1 A nut 118 is screwed onto the screw rod, a spring washer 117 is inserted, and then another nut 118 is screwed on; finally, the two holes of the outgoing line plate 2 are aligned with the two screw holes at the top of the support 1, and the bolt 120 is screwed in to fasten, completing the installation.

[0028] The screw rod 9 functions to limit the rotation of the static contact assembly, the hole at one end of the screw rod 9 has been inserted into the pin 114 with holes and connected with the static contact assembly, and the other end is inserted through the waist hole of the support 1; when the switch is closed, the moving contact 3 will rotate the static contact assembly with the pin 111 with holes as the center when it is inserted into the contact 4, and the position of the adjusting nut 118 on the screw rod 9 can be adjusted to limit the rotation angle of the static contact assembly.

[0029] With the above structure, the outgoing line plate 2 is connected with the static contact 4, and when the switch is closed, the moving contact 3 will overcome the pressure of the contact spring 5 and expand the clamping of the four sets of contacts 4, at this time, the contact 4 forms a force lever, and the clamping force of the other end of the contact 4 on the outgoing line plate 2 is increased (see Figure 2 At the same time, the two oval surfaces of the outgoing line plate 2 are in line contact with the end surface of the contact 4, have better conductivity, and also reduce the closing resistance, reduce the operating force of the disconnecting switch, avoid the extension of the opening and closing time caused by the jamming and inflexibility, and thus cause equipment failure.

[0030] The above describes the specific embodiments of the present application in combination with the drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the present application.

Claims

1. A disconnector static contact, characterized by: The utility model provides a static contact assembly, which comprises a support (1), an outgoing line plate (2), a moving contact (3), a contact piece (4), a contact piece compression spring (5), a screw (6), a bent plate (7), a mounting block (8), a screw rod (9), a compression spring (10), a hole pin I (11), a flat washer I (12), a split pin I (13), a hole pin II (14), a flat washer II (15), a split pin II (16), a spring washer (17), a nut (18), a bolt I (19) and a bolt II (20).

2. The isolating switch stationary contact according to claim 1, characterized in that: The contact piece (4) is placed on the screw holes of the mounting block (8) in a vertical manner, and the screw (6) is sequentially inserted into the contact piece compression spring (5), the contact piece (4) and then screwed into the screw holes of the mounting block (8); after installation, the screw (6) is screwed, and the height of each screw (6) is adjusted to the height of the contact piece (4). The bent plate (7) is installed on both sides of the mounting block (8) and is fastened by the bolt I (19). The outgoing line plate (2) is inserted between the contact pieces (4) on one side and is connected with the mounting block (8). The hole pin I (11) is sequentially inserted into the flat washer I (12), the bent plate (7), the flat washer I (12), the outgoing line plate (2), the flat washer I (12), the bent plate (7) and the flat washer I (12), then the two split pins I (13) are inserted into the holes at the two ends of the hole pin I (11), and the installation is completed by separating the split pin I (13). The moving contact (3) is inserted between the contact pieces (4) on the other side. The hole pin II (14) is sequentially inserted into the flat washer II (15), the bent plate (7), the flat washer II (15), the hole of the screw rod (9), the flat washer II (15), the bent plate (7) and the flat washer II (15), then the two split pins II (16) are inserted into the holes at the two ends of the hole pin II (14), and the static contact assembly is installed by separating the split pin II (16); the hole at one end of the screw rod (9) is inserted into the hole pin II (14) and is connected with the static contact assembly, and the other end is sequentially inserted into the flat washer I (12), the compression spring (10), the flat washer I (12), the nut (18), the waist hole of the support (1), the nut (18) screwed on the screw rod, the spring washer (17) and then another nut (18); the two holes of the outgoing line plate (2) are aligned with the two screw holes at the top of the support (1), the bolt II (20) is screwed in and is fastened.

3. The isolating switch stationary contact according to claim 1, characterized in that: The contact piece (4) is in the shape of a long strip with a waist, and a round hole is arranged in the middle.

4. The isolating switch stationary contact of claim 1, wherein: One end of the outgoing line plate (2) is provided with two oval curved surfaces, which are tangent to the end surfaces of the contact pieces (4) and are in line contact, and the other end is provided with a plate.

5. The isolating switch stationary contact according to claim 1, characterized in that: One end of the moving contact (3) is provided with two oval curved surfaces, which are tangent to the end surfaces of the contact pieces (4) and are in line contact, and the height of the oval curved surface end of the outgoing line plate (2) is the same as that of the oval curved surface end of the moving contact (3).

6. The isolating switch stationary contact of claim 2, wherein: The mounting block (8) is in the shape of H, and four screw holes are arranged on the upper and lower parts.

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