Grounding switch convenient for judging tightness of contact

Abstract

The invention relates to the field of power equipment, in particular to a grounding switch convenient for judging tightness of a contact. The grounding switch convenient for judging the tightness of the contact is simple in structure, obvious in effect and capable of quickly detecting whether the contact of the grounding switch is loosened or not and improving the detection efficiency of the grounding switch. A grounding switch facilitating contact tightness judgment comprises a mounting base, insulators, static contacts, limiting pieces and the like, the multiple insulators are arranged on the upper side of the rear portion of the mounting base, the tops of the insulators are connected with the static contacts, and the left portion and the right portion of the mounting base are connected with the limiting pieces. According to the invention, the position change after the contact block contacts with the moving contact is taken as the basis to judge whether the grounding switch contact is loosened, the structure is simple, the effect is obvious, whether the grounding switch contact is loosened can be rapidly detected, and the grounding switch detection efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of electric power equipment, and in particular to a grounding switch which is convenient for judging the tightness of contacts. Background Art

[0002] The earthing switch is a special switch device used to connect a part of the power system to the earth. Its main purpose is to ensure the personal safety of relevant personnel when performing maintenance or overhaul of electrical equipment.

[0003] The tightness of the grounding switch contacts is crucial to ensure the reliability and safety of the switch. The detection of contact tightness is usually to verify whether the contact between the moving contact and the static contact is tight enough to ensure a good electrical connection. There are several ways to detect and judge the tightness of existing grounding switch contacts: 1. Visually inspect the appearance of the contacts to see if there are obvious signs of looseness; 2. Manually operate the grounding switch to observe whether there is obvious shaking or gap when the contacts are closed; 3. Use a torque wrench to check the tightness of the connecting bolts to ensure that they have reached the specified torque value; as well as resistance measurement and infrared thermal imager and other precision instruments detection, but most grounding switches on the market currently do not have their own contact tightness detection function, but require regular manual inspections through the above methods, which has high labor costs and low detection efficiency.

[0004] Therefore, there is an urgent need for a grounding switch with a simple structure and obvious effect, which can quickly detect whether the contacts of the grounding switch are loose, improve the detection efficiency of the grounding switch, and facilitate the judgment of the tightness of the contacts. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art in the above background technology, the present invention provides a grounding switch with a simple structure and obvious effect, which can quickly detect whether the grounding switch contacts are loose, improve the detection efficiency of the grounding switch and facilitate the judgment of the tightness of the contacts.

[0006] The technical implementation scheme of the present invention is: a grounding switch that is easy to judge the tightness of contacts, including a mounting seat, an insulator, a static contact, a limit piece, a first rotating shaft, a moving contact, a telescopic assembly, a mounting assembly and a rotating assembly. A plurality of insulators are arranged on the upper rear side of the mounting seat, the tops of the insulators are connected to static contacts, the left and right parts of the mounting seat are connected to limit pieces, the rear part of the mounting seat is rotatably connected to the first rotating shaft, a plurality of moving contacts are arranged on the first rotating shaft, the moving contacts are in contact with adjacent static contacts, the lower part of the moving contacts is in contact with the limit piece, the lower parts of the moving contacts on the left and right parts are both provided with telescopic assemblies between the mounting seat and the mounting seat, the front part of the mounting seat is provided with a mounting assembly, the mounting seat is provided with a rotating assembly, and the mounting assembly is provided with a detection mechanism.

[0007] Optionally, a limiting groove for limiting the rotation of the braking contact is opened on the first rotating shaft.

[0008] Optionally, a connecting rod is provided between the moving contacts to stabilize the synchronously controlled moving contacts.

[0009] Optionally, the telescopic assembly includes a telescopic rod and a spring, the lower part of the left and right moving contacts is rotatably connected to the mounting seat by a telescopic rod, and the telescopic rod is provided with a spring.

[0010] Optionally, the mounting assembly includes a first fixed block, a first mounting frame and a shifting post, the first fixed blocks are connected to the upper sides of the left and right parts of the mounting seat, the first mounting frame is slidably connected between the first fixed blocks, and the shifting posts are connected to the left and right sides of the first mounting frame.

[0011] Optionally, the rotating assembly includes a support block, a connecting frame and a second rotating shaft. The left and right sides of the mounting seat are connected to the support blocks. The connecting frame is rotatably connected between the support blocks. The connecting frame is in contact with the shifting column, and the second rotating shaft is connected to the right side of the connecting frame.

[0012] Optionally, the detection mechanism includes a second mounting bracket, a mounting column, a contact block and a strong spring. Multiple second mounting brackets are connected to the first mounting bracket, the second mounting bracket is connected to the mounting column, the left and right parts of the mounting column are both slidably connected to contact blocks, and a strong spring is provided between the contact block and the mounting column.

[0013] Optionally, a locking mechanism is also included, which includes a support frame, a locking plate, a spiral spring, a second fixed block and a locking block. The mounting columns are connected to the support frames, the upper parts of the support frames are rotatably connected to the locking plates, spiral springs are provided between the left and right parts of the locking plates and the adjacent support frames, the upper parts of the contact blocks are connected to the second fixed blocks, the second fixed blocks are connected to the locking blocks, and the tops of the locking blocks can contact the locking plates.

[0014] The beneficial effects are as follows: 1. The present invention uses the position change after the contact block contacts the moving contact as the basis for judging whether the grounding switch contact is loose. The structure is simple and the effect is obvious. It can quickly detect whether the grounding switch contact is loose, thereby improving the detection efficiency of the grounding switch.

[0015] 2. The present invention detects the displacement change of the moving contact according to the contact block through the locking block, and changes the relationship between the locking plate and the locking plate according to the change to control the opening and closing of the locking plate. When the contact is loose, the closing action can be limited, thereby improving the loose contact detection of the grounding switch and the safety of the grounding switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the first part of the present invention.

[0018] Figure 3It is a schematic diagram of the three-dimensional structure of the second part of the present invention.

[0019] Figure 4 It is a schematic diagram of the structure of the mounting assembly, the rotating assembly and the detection mechanism of the present invention.

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the installation assembly of the present invention.

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the rotating assembly of the present invention.

[0022] Figure 7 It is a three-dimensional structural schematic diagram of the mounting assembly and the rotating assembly of the present invention.

[0023] Figure 8 It is a schematic diagram of the three-dimensional structure of the detection mechanism of the present invention in a non-detection state.

[0024] Fig. 9 It is a schematic diagram of the three-dimensional structure of the detection state of the detection mechanism of the present invention.

[0025] Fig.10 It is a schematic diagram of the three-dimensional structure of the locking mechanism of the present invention in a non-detection state.

[0026] Fig.11 It is a schematic diagram of the three-dimensional structure of the detection state of the locking mechanism of the present invention.

[0027] The markings of the components in the accompanying drawings are as follows: 1: mounting seat, 2: insulator, 3: static contact, 4: limit member, 5: first rotating shaft, 6: moving contact, 7: telescopic assembly, 8: mounting assembly, 80: first fixed block, 81: first mounting frame, 82: shifting column, 9: rotating assembly, 90: supporting block, 91: connecting frame, 92: second rotating shaft, 10: detection mechanism, 100: second mounting frame, 101: mounting column, 102: contact block, 103: strong spring, 11: locking mechanism, 110: supporting frame, 111: locking plate, 112: scroll spring, 113: second fixed block, 114: locking block. DETAILED DESCRIPTION

[0028] 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.

[0029] A grounding switch that is easy to judge the tightness of the contacts, such as Figure 1-Figure 11As shown, it includes a mounting seat 1, an insulator 2, a static contact 3, a limit piece 4, a first rotating shaft 5, a moving contact 6, a telescopic assembly 7, a mounting assembly 8 and a rotating assembly 9. A plurality of insulators 2 are provided on the upper rear side of the mounting seat 1, and the tops of the insulators 2 are connected to the static contacts 3. The left and right parts of the mounting seat 1 are connected to the limit piece 4. The rear of the mounting seat 1 is rotatably connected with the first rotating shaft 5, and a plurality of moving contacts 6 are provided on the first rotating shaft. The moving contacts 6 are in contact with adjacent static contacts 3, and the lower parts of the moving contacts 6 are in contact with the limit piece 4. A telescopic assembly 7 is provided between the lower parts of the moving contacts 6 on the left and right parts and the mounting seat 1, and the telescopic assembly 7 includes a telescopic rod and a spring. The lower parts of the moving contacts 6 on the left and right parts are rotatably connected with the mounting seat 1 with a telescopic rod, and a spring is provided on the telescopic rod. A mounting assembly 8 is provided at the front part of the mounting seat 1, and the mounting assembly 8 includes a first fixed block 80, a first mounting frame 81 and a shifting post 82. The upper sides of the left and right parts of the mounting seat 1 are connected to the first fixed blocks 80, and the first fixed blocks 80 are slidably connected There is a first mounting frame 81, and the left and right sides of the first mounting frame 81 are connected with a lever 82. The mounting seat 1 is provided with a rotating assembly 9, and the rotating assembly 9 includes a support block 90, a connecting frame 91 and a second rotating shaft 92. The left and right sides of the mounting seat 1 are connected with support blocks 90, and a connecting frame 91 is rotatably connected between the support blocks 90, and the connecting frame 91 contacts the lever 82. The right side of the connecting frame 91 is connected with the second rotating shaft 92, and the connecting frame 91 is controlled to rotate by an external handle or motor connected to the second rotating shaft 92. The rotation of the connecting frame 91 can control the sliding of the first mounting frame 81 by using the lever 82. A detection mechanism 10 is provided on the mounting assembly 8, and the moving contact 6 is controlled to rotate by an external handle or motor connected to the first rotating shaft 5. When the moving contact 6 rotates and contacts the static contact 3, the telescopic assembly 7 provides sufficient supporting force to ensure that a good electrical connection is formed between the moving contact 6 and the static contact 3. When the grounding switch needs to be disconnected, the first rotating shaft 5 is controlled to move in the opposite direction, the telescopic assembly 7 retracts, and the moving contact 6 is separated from the static contact 3.

[0030] The detection mechanism 10 includes a second mounting frame 100, a mounting column 101, a contact block 102 and a strong spring 103. A plurality of second mounting frames 100 are connected to the first mounting frame 81. The second mounting frame 100 is connected to the mounting column 101. The left and right parts of the mounting column 101 are both slidably connected with the contact blocks 102. A strong spring 103 is provided between the contact block 102 and the mounting column 101. The first mounting frame 81 slides to drive the second mounting frame 100 to move. When the second mounting frame 100 is controlled to drive the contact block 102 to move close to the moving contact 6, the contact block 102 will be squeezed with the moving contact 6. If the moving contact 6 is loose, under the action of the tensioning force of the strong spring 103, the contact block 102 will open the moving contact 6, and the contact block 102 keeps its position unchanged. If the moving contact 6 is not loose, the contact block 102 is squeezed and closed by the moving contact 6 to compress the strong spring 103, and its position changes.

[0031] The locking mechanism 11 is also included, and the locking mechanism 11 includes a support frame 110, a locking plate 111, a volute spring 112, a second fixed block 113 and a locking block 114. The mounting column 101 is connected to the support frame 110, and the upper part of the support frame 110 is rotatably connected to the locking plate 111. A volute spring 112 is provided between the left and right parts of the locking plate 111 and the adjacent support frame 110, and the upper part of the contact block 102 is connected to the second fixed block 113, and the second fixed block 113 is connected to the locking block 114. The top of the block 114 can contact with the locking plate 111. When the moving contact 6 is loose, the position of the contact block 102 remains unchanged. At this time, the top of the locking block 114 contacts with the bottom of the locking plate 111 and restricts the locking plate 111 so that it cannot rotate. When the moving contact 6 is not loose, the contact block 102 is displaced, so that the locking block 114 and the locking plate 111 are misaligned. At this time, when the closing operation is performed, the locking plate 111 loses its restriction, and the passive contact 6 is pushed open by the closing action, and then the scroll spring 112 rebounds to control the locking plate 111 to reset;

[0032] When the present invention is in use, the movable contact 6 is controlled to rotate by an external handle or motor connected to the first rotating shaft 5. When the movable contact 6 rotates and contacts the static contact 3, the telescopic assembly 7 provides sufficient supporting force to ensure that a good electrical connection is formed between the movable contact 6 and the static contact 3. When the grounding switch needs to be disconnected, the first rotating shaft 5 is controlled to move in the reverse direction, the telescopic assembly 7 retracts, and the movable contact 6 is separated from the static contact 3. When the movable contact 6 is separated and in the initial state, the connecting frame 91 is controlled to rotate by an external handle or motor connected to the second rotating shaft 92 according to detection needs. The rotation of the connecting frame 91 can control the sliding of the first mounting frame 81 by using the lever 82. The sliding of the first mounting frame 81 drives the second mounting frame 100 to move. When the second mounting frame 100 is controlled to drive the contact block 102 to move close to the movable contact 6, the contact block 102 will be squeezed with the movable contact 6. If the movable contact 6 is loose, under the action of the tensioning force of the strong spring 103, the contact block 102 When the moving contact 6 is loose, the contact block 102 remains in position and the contact block 102 keeps its position unchanged. If the moving contact 6 is not loose, the contact block 102 is squeezed and closed by the passive contact 6 to compress the strong spring 103, and its position changes. Therefore, the looseness of the moving contact 6 can be judged. When the moving contact 6 is loose, the position of the contact block 102 remains unchanged. At this time, the top of the locking block 114 contacts the bottom of the locking plate 111 and restricts the locking plate 111 so that it cannot rotate. Therefore, when the moving contact 6 detects that it is loose, it cannot be rotated again to perform the closing operation. When the moving contact 6 is not loose, the contact block 102 is displaced, causing the locking block 114 to be misaligned with the locking plate 111. At this time, when the closing operation is performed, the locking plate 111 loses its restriction, and the passive contact 6 is pushed open by the closing action. Then, the volute spring 112 rebounds to control the locking plate 111 to reset. After the detection is completed, the second rotating shaft 92 controls the connecting frame 91 to cooperate with the lever 82 to reset the first mounting frame 81.

[0033] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A grounding switch that is convenient for judging the tightness of contacts, characterized by: The invention comprises a mounting seat (1), an insulator (2), a static contact (3), a limiting member (4), a first rotating shaft (5), a moving contact (6), a telescopic assembly (7), a mounting assembly (8) and a rotating assembly (9); a plurality of insulators (2) are arranged on the upper rear side of the mounting seat (1); the tops of the insulators (2) are all connected to the static contacts (3); the left and right parts of the mounting seat (1) are both connected to the limiting member (4); the rear part of the mounting seat (1) is rotatably connected to the first rotating shaft (5); a plurality of moving contacts (6) are arranged on the first rotating shaft; the moving contacts (6) are in contact with adjacent static contacts (3); the lower parts of the moving contacts (6) are in contact with the limiting member (4); the lower parts of the moving contacts (6) on the left and right parts are both provided with telescopic assemblies (7) between the mounting seat (1); the mounting seat (1) is provided with a mounting assembly (8) at the front; the mounting seat (1) is provided with a rotating assembly (9); and the mounting assembly (8) is provided with a detection mechanism (10).

2. A grounding switch for facilitating determination of contact tightness according to claim 1, characterized in that: The first rotating shaft (5) is provided with a limiting groove for limiting the rotation of the braking contact (6).

3. A grounding switch for facilitating determination of contact tightness according to claim 1, characterized in that: A connecting rod is provided between the moving contacts (6) for stabilizing the synchronously controlled moving contacts (6).

4. A grounding switch for facilitating determination of contact tightness according to claim 1, characterized in that: The telescopic assembly (7) comprises a telescopic rod and a spring. The lower parts of the left and right moving contacts (6) are rotatably connected to the mounting seat (1) with a telescopic rod, and a spring is arranged on the telescopic rod.

5. A grounding switch for facilitating determination of contact tightness according to claim 1, characterized in that: The mounting assembly (8) comprises a first fixing block (80), a first mounting frame (81) and a shifting post (82); the upper sides of the left and right parts of the mounting seat (1) are both connected to the first fixing blocks (80); the first mounting frame (81) is slidably connected between the first fixing blocks (80); and the left and right sides of the first mounting frame (81) are both connected to the shifting post (82).

6. A grounding switch for facilitating determination of contact tightness according to claim 1, characterized in that: The rotating assembly (9) comprises a supporting block (90), a connecting frame (91) and a second rotating shaft (92). The left and right sides of the mounting seat (1) are both connected with the supporting blocks (90). The connecting frame (91) is rotatably connected between the supporting blocks (90). The connecting frame (91) contacts the shifting column (82). The right side of the connecting frame (91) is connected with the second rotating shaft (92).

7. A grounding switch for facilitating determination of contact tightness according to claim 1, characterized in that: The detection mechanism (10) comprises a second mounting frame (100), a mounting column (101), a contact block (102) and a strong spring (103); a plurality of second mounting frames (100) are connected to the first mounting frame (81); the second mounting frame (100) is connected to the mounting column (101); the left and right parts of the mounting column (101) are both slidably connected to the contact block (102); and a strong spring (103) is provided between the contact block (102) and the mounting column (101).

8. A grounding switch for facilitating determination of contact tightness according to claim 7, characterized in that: The invention also comprises a locking mechanism (11), wherein the locking mechanism (11) comprises a support frame (110), a locking plate (111), a volute spring (112), a second fixed block (113) and a locking block (114); the mounting column (101) is connected to the support frame (110); the upper part of the support frame (110) is rotatably connected to the locking plate (111); a volute spring (112) is provided between the left and right parts of the locking plate (111) and the adjacent support frame (110); the upper part of the contact block (102) is connected to the second fixed block (113); the second fixed block (113) is connected to the locking block (114); and the top of the locking block (114) can contact the locking plate (111).

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