Ground switch with contact tightness judging function

Abstract

The present invention relates to the field of power equipment, and in particular to a grounding switch that is convenient for judging the tightness of contacts. The present invention provides a grounding switch that is convenient for judging the tightness of contacts and has a simple structure and obvious effect, can quickly detect whether the contacts of the grounding switch are loose, and improves the detection efficiency of the grounding switch. A grounding switch that is convenient for judging the tightness of contacts includes a mounting seat, an insulator, a static contact and a limiter, etc. A plurality of insulators are provided on the upper rear side of the mounting seat, the tops of the insulators are all connected to static contacts, and the left and right parts of the mounting seat are both connected to limiters. The present invention uses the position change after the contact block contacts the moving contact as the basis for judging whether the contacts of the grounding switch are loose. The structure is simple and the effect is obvious, and it can quickly detect whether the contacts of the grounding switch are loose, thereby improving the detection efficiency of the grounding switch.

Description

TECHNICAL FIELD

[0001] The application relates to the field of power equipment, in particular to a grounding switch facilitating judgment of tightness of contacts. BACKGROUND

[0002] The grounding switch is a special switch device used to connect a part of the power system with the ground. Its main purpose is to ensure the safety of the relevant personnel when the electrical equipment is maintained or overhauled.

[0003] The tightness of the grounding switch contacts is crucial to ensure the reliability and safety of the switch. The detection of the tightness of the grounding switch contacts is usually to verify whether the contact between the moving contact and the static contact is tight enough to ensure good electrical connection. There are several ways to detect and judge the tightness of the contacts of the existing grounding switch, 1. visually inspecting the appearance of the contacts to check whether there are obvious signs of looseness; 2. observing whether there is obvious shaking or gap when the contacts are closed by manually operating the grounding switch; 3. checking the fastening degree of the connecting bolts by using a torque wrench to ensure that they reach the specified torque value; and detecting by using precise instruments such as resistance measurement and infrared thermal imager. However, most grounding switches on the market do not have the function of detecting the tightness of the contacts, and need to be checked regularly by manual inspection by using the above methods, which is high in labor cost and low in detection efficiency.

[0004] Therefore, there is an urgent need for a grounding switch facilitating judgment of tightness of contacts, which has a simple structure, obvious effect, can quickly detect whether the contacts of the grounding switch are loose, and improves the detection efficiency of the grounding switch. SUMMARY

[0005] In order to overcome the shortcomings of the prior art in the background, the application provides a grounding switch facilitating judgment of tightness of contacts, which has a simple structure, obvious effect, can quickly detect whether the contacts of the grounding switch are loose, and improves the detection efficiency of the grounding switch.

[0006] The technical implementation scheme of the application is as follows: a grounding switch facilitating judgment of tightness of contacts, comprising a mounting seat, insulators, static contacts, limiting pieces, a first rotating shaft, moving contacts, a telescopic assembly, a mounting assembly and a rotating assembly, a plurality of insulators are arranged on the upper side of the rear part of the mounting seat, the top of each insulator is connected with a static contact, the left and right parts of the mounting seat are connected with limiting pieces, the rear part of the mounting seat is rotationally connected with the first rotating shaft, a plurality of moving contacts are arranged on the first rotating shaft, the moving contacts are in contact with the adjacent static contacts, the lower parts of the moving contacts are in contact with the limiting pieces, the telescopic assembly is arranged between the lower parts of the moving contacts of the left and right parts and the mounting seat, the mounting assembly is arranged on the front part of the mounting seat, the rotating assembly is arranged on the mounting seat, and the detection mechanism is arranged on the mounting assembly.

[0007] Optionally, a limiting groove for limiting rotation of the moving contact is formed in the first rotating shaft.

[0008] Optionally, connecting rods are arranged between the moving contacts for stabilizing the moving contacts under synchronous control.

[0009] Optionally, the telescopic assembly comprises telescopic rods and springs, and the lower parts of the moving contacts of the left and right parts are rotationally connected with the mounting seats via the telescopic rods, and the telescopic rods are provided with the springs.

[0010] Optionally, the mounting assembly comprises first fixing blocks, a first mounting frame and shifting columns, the upper sides of the left and right parts of the mounting seat are connected with the first fixing blocks, the first fixing blocks are slidably connected with the first mounting frame, and the left and right sides of the first mounting frame are connected with the shifting columns.

[0011] Optionally, the rotating assembly comprises support blocks, a connecting frame and a second rotating shaft, the left and right sides of the mounting seat are connected with the support blocks, the support blocks are rotationally connected with the connecting frame, the connecting frame is in contact with the shifting columns, and the right side of the connecting frame is connected with the second rotating shaft.

[0012] Optionally, the detecting mechanism comprises second mounting frames, mounting columns, contact blocks and strong springs, the first mounting frame is connected with a plurality of the second mounting frames, the second mounting frames are connected with the mounting columns, the left and right parts of the mounting columns are slidably connected with the contact blocks, and the strong springs are arranged between the contact blocks and the mounting columns.

[0013] Optionally, the locking mechanism comprises support frames, locking plates, volute springs, second fixing blocks and locking blocks, the mounting columns are connected with the support frames, the upper parts of the support frames are rotationally connected with the locking plates, the left and right parts of the locking plates and the adjacent support frames are provided with the volute springs, the upper parts of the contact blocks are connected with the second fixing blocks, and the second fixing blocks are connected with the locking blocks, and the top parts of the locking blocks can be in contact with the locking plates.

[0014] Beneficial effects are as follows: 1. The position change of the contact block after being in contact with the moving contact is taken as the basis for judging whether the contact point of the grounding switch is loose, the structure is simple, the effect is obvious, the contact point of the grounding switch can be quickly detected, and the detection efficiency of the grounding switch is improved.

[0015] 2. The locking block detects the displacement change of the moving contact according to the contact block, changes the relationship between the locking block and the locking plate according to the change, controls the opening and closing of the locking plate, can limit the closing action when the contact point is loose, and improves the contact point loose detection of the grounding switch and the use safety of the grounding switch. BRIEF DESCRIPTION OF DRAWINGS

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

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

[0018] Figure 3It is a second part of the schematic diagram of the stereoscopic structure of the application.

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

[0020] Figure 5 It is a schematic diagram of the stereoscopic structure of the mounting assembly of the application.

[0021] Figure 6 It is a schematic diagram of the stereoscopic structure of the rotating assembly of the application.

[0022] Figure 7 It is a schematic diagram of the stereoscopic structure of the mounting assembly and rotating assembly of the application.

[0023] Figure 8 It is a schematic diagram of the stereoscopic structure of the detection mechanism of the application in a non-detection state.

[0024] Figure 9 It is a schematic diagram of the stereoscopic structure of the detection mechanism of the application in a detection state.

[0025] Figure 10 It is a schematic diagram of the stereoscopic structure of the locking mechanism of the application in a non-detection state.

[0026] Figure 11 It is a schematic diagram of the stereoscopic structure of the locking mechanism of the application in a detection state.

[0027] The marks of the components in the drawings are as follows: 1: mounting seat, 2: insulator, 3: static contact, 4: limiting piece, 5: first rotating shaft, 6: dynamic contact, 7: telescopic assembly, 8: mounting assembly, 80: first fixed block, 81: first mounting frame, 82: pushing 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: volute spring, 113: second fixed block, 114: locking block. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0029] A ground switch facilitating judging the tightness of contacts, such as Figures 1-11As shown, including the mounting seat 1, insulator 2, static contact 3, limiting piece 4, the first rotating shaft 5, the moving contact 6, telescopic assembly 7, mounting assembly 8 and rotating assembly 9, mounting seat 1 rear upper side is equipped with a plurality of insulators 2, the top of the insulator 2 is connected with the static contact 3, the mounting seat 1 left and right two parts are connected with the limiting piece 4, the mounting seat 1 rear rotating connection has the first rotating shaft 5, the first rotating shaft is equipped with a plurality of moving contact 6, the moving contact 6 and the adjacent static contact 3 contact, the moving contact 6 lower part and the limiting piece 4 contact, the left and right two parts of the moving contact 6 lower part is equipped with telescopic assembly 7 between the mounting seat 1, telescopic assembly 7 includes telescopic rod and spring, the left and right two parts of the moving contact 6 lower part and the mounting seat 1 rotating connection has telescopic rod, the telescopic rod is equipped with spring, the mounting seat 1 front is equipped with mounting assembly 8, mounting assembly 8 includes first fixed block 80, first mounting frame 81 and the column 82, the mounting seat 1 left and right two parts upper side is connected with the first fixed block 80, the first fixed block 80 between sliding connection has the first mounting frame 81, the first mounting frame 81 left and right sides are connected with the column 82, the mounting seat 1 is equipped with rotating assembly 9, rotating assembly 9 includes support block 90, connecting frame 91 and second rotating shaft 92, the mounting seat 1 left and right sides are connected with the support block 90, the support block 90 between rotating connection has connecting frame 91, connecting frame 91 and the column 82 contact, connecting frame 91 right side is connected with the second rotating shaft 92, through the second rotating shaft 92 external handle or motor control connecting frame 91 rotation, connecting frame 91 rotation utilizes the column 82 can control the first mounting frame 81 sliding, mounting assembly 8 is equipped with detection mechanism 10, through the first rotating shaft 5 external handle or motor control moving contact 6 rotation, moving contact 6 rotation and static contact 3 contact, telescopic assembly 7 provides enough support force, ensure that moving contact 6 and static contact 3 between the formation good electrical connection, when need to disconnect grounding switch, control the first rotating shaft 5 reverse action, telescopic assembly 7 retraction, moving contact 6 and static contact 3 separate;

[0030] Detection mechanism 10 includes second mounting frame 100, mounting column 101, contact block 102 and strong spring 103, the first mounting frame 81 is connected with a plurality of second mounting frame 100, the second mounting frame 100 is connected with mounting column 101, the left and right two parts of mounting column 101 are slidingly connected with contact block 102, the contact block 102 and the mounting column 101 between strong spring 103, the first mounting frame 81 sliding drive second mounting frame 100 moves, when the second mounting frame 100 is controlled to drive contact block 102 moves close to moving contact 6, contact block 102 will extrude moving contact 6, if moving contact 6 loose, under the action of the tension of strong spring 103, contact block 102 will open moving contact 6, contact block 102 keeps the position unchanged, if moving contact 6 is not loose, then contact block 102 is extruded by moving contact 6 and is compressed strong spring 103, its position changes;

[0031] Further include locking mechanism 11, locking mechanism 11 includes support frame 110, locking plate 111, volute spring 112, second fixed block 113 and locking block 114, mounting column 101 are connected with support frame 110, the upper part of support frame 110 is rotatably connected with locking plate 111, the left and right parts of locking plate 111 are provided with volute spring 112 between adjacent support frame 110, the upper part of contact block 102 is connected with second fixed block 113, second fixed block 113 is connected with locking block 114, the top of locking block 114 can be in contact with locking plate 111, when the movable contact 6 is loose, the position of the contact block 102 is unchanged, at this time the top of the locking block 114 is in contact with the bottom of the locking plate 111, and the locking plate 111 is limited, so that it cannot rotate, when the movable contact 6 is not loose, the contact block 102 is displaced, so that the locking block 114 is misaligned with the locking plate 111, at this time when the closing operation is carried out, the locking plate 111 loses the limitation and the passive contact 6 is opened by the closing action, and then the volute spring 112 is rebounded to control the locking plate 111 to reset;

[0032] In use, the first rotating shaft 5 is controlled by an external handle or motor to rotate the movable contact 6, when the movable contact 6 rotates and contacts the static contact 3, the telescopic assembly 7 provides sufficient support force to ensure that the movable contact 6 and the static contact 3 form a good electrical connection, when the grounding switch needs to be disconnected, the first rotating shaft 5 is controlled to reverse action, the telescopic assembly 7 is retracted, the movable contact 6 is separated from the static contact 3, and the movable contact 6 is separated from the initial state, according to the detection needs, the second rotating shaft 92 is controlled by an external handle or motor to rotate the connecting frame 91, the connecting frame 91 is rotated to control the first mounting frame 81 to slide by the push rod 82, 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 movable contact 6, the contact block 102 will be extruded with the movable contact 6, if the movable contact 6 is loose, the contact block 102 will be opened by the tension of the strong spring 103, the contact block 102 keeps the position unchanged, if the movable contact 6 is not loose, the contact block 102 is extruded and folded by the passive contact 6 to compress the strong spring 103, and the position is changed, thereby the looseness of the movable contact 6 can be judged, when the movable contact 6 is loose, the position of the contact block 102 is unchanged, at this time the top of the locking block 114 is in contact with the bottom of the locking plate 111, and the locking plate 111 is limited, so that it cannot rotate, therefore, when the movable contact 6 detects looseness, it cannot rotate again for closing operation, when the movable contact 6 is not loose, the contact block 102 is displaced, so that the locking block 114 is misaligned with the locking plate 111, at this time when the closing operation is carried out, the locking plate 111 loses the limitation and the passive contact 6 is opened by the closing action, and then the volute spring 112 is rebounded to control the locking plate 111 to reset, after the detection is completed, the first mounting frame 81 is reset by the second rotating shaft 92 controlling the connecting frame 91 and cooperating with the push rod 82.

[0033] The above merely illustrates the embodiments of the present application, and is not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process conversion, or direct or indirect application in other related technical fields, which is made by using the content of the present application, is also included in the patent protection scope of the present application.

Claims

1. A grounding switch that facilitates determination of contact tightness, characterized by: The invention comprises a mounting base (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), wherein a plurality of insulators (2) are provided on the upper rear side of the mounting base (1), the tops of the insulators (2) are all connected to the static contacts (3), the left and right parts of the mounting base (1) are both connected to the limiting member (4), the rear part of the mounting base (1) is rotatably connected to the first rotating shaft (5), 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), 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) and the mounting base (1), the front part of the mounting base (1) is provided with a mounting assembly (8), the mounting base (1) is provided with a rotating assembly (9), and the mounting assembly (8) is provided with a detection mechanism (10); 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 both connected to the first fixed block (80); the first mounting frame (81) is slidably connected between the first fixed blocks (80); and the left and right sides of the first mounting frame (81) are both connected to the shifting post (82); 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 both connected to the support blocks (90). The connecting frame (91) is rotatably connected between the support blocks (90). The connecting frame (91) contacts the shifting column (82). The right side of the connecting frame (91) is connected to the second rotating shaft (92). 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 to the contact block (102); and a strong spring (103) is provided between the contact block (102) and the mounting column (101); The invention also includes a locking mechanism (11), which 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), the upper part of the support frame (110) is rotatably connected to the locking plate (111), and 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), and the second fixed block (113) is connected to the locking block (114). The top of the locking block (114) can contact the locking plate (111).

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) includes 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) by a telescopic rod, and a spring is provided on the telescopic rod.

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