Closing locking device for 1.5 kV direct current circuit breaker

Abstract

The utility model discloses a closing lock catch device for a 1.5 kV direct-current circuit breaker, and belongs to the field of direct-current circuit breakers. The closing lock catch device comprises an opening and closing indication board, a front-end mounting plate and a supporting crank arm, the top of the front-end mounting plate is slidably connected with the opening and closing indication board, and a secondary control terminal strip is fixedly mounted on the outer side of the front-end mounting plate; the inner wall of the supporting crank arm is rotatably connected with an insulating pull rod, the outer side of the insulating pull rod is sleeved with a contact spring pressing plate, the outer side of the opening and closing indication board is fixedly connected with an armature, and the inner wall of the supporting crank arm is fixedly connected with a contact spring pressing rod; the connecting end and the round hole are matched with the hook to connect the tension spring and the sliding rod, so that it is guaranteed that the armature can be reset by means of the elastic acting force of the tension spring during rotation, convenience of the armature during resetting is improved, the armature can be pulled and positioned when not used, it is guaranteed that the armature cannot swing easily, and stability is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of direct current circuit breaker, and particularly relates to a closing lock device for a 1.5kV direct current circuit breaker. BACKGROUND

[0002] At present, direct current power supply technology has been widely applied in China, and the direct current circuit breaker is a very important device in the direct current power supply system. According to the working principle of the direct current circuit breaker, the direct current circuit breaker can be divided into a mechanical circuit breaker, a full solid-state circuit breaker and a hybrid circuit breaker. The closing lock device needs to be used when the direct current circuit breaker is actually used.

[0003] The existing closing lock device cannot play a good traction role on the armature in actual use, so that the armature is easy to swing during transportation or when the device is not used, and is in contact and collision with other devices. Therefore, the present application provides a closing lock device for a 1.5kV direct current circuit breaker to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] In view of the defects of the prior art, the utility model provides a closing lock device for a 1.5kV direct current circuit breaker, which overcomes the defects of the prior art and aims to solve the problems in the background art.

[0005] In order to achieve the above purpose, the application adopts the following technical scheme: a closing lock device for a 1.5kV direct current circuit breaker, comprising an on-off indicator, a front end mounting plate and a support crank, the top of the front end mounting plate is slidably connected with the on-off indicator, the outer side of the front end mounting plate is fixedly installed with a secondary control terminal row, the inner wall of the support crank is rotatably connected with an insulating pull rod, the outer side of the insulating pull rod is sleeved with a contact spring pressing plate, the outer side of the on-off indicator is fixedly connected with an armature, the inner wall of the support crank is fixedly connected with a contact spring pressing rod, the outer edge of the contact spring pressing rod is sleeved with an outer contact spring and an inner contact spring, the side wall of the front end mounting plate is fixedly installed with a front lock plate, the top of the front end mounting plate is installed with a coil assembly, the end of the contact spring pressing rod away from the support crank is slidably connected with an overtravel adjusting nut, the end of the overtravel adjusting nut away from the contact spring pressing rod is connected with an intermediate lock block, and the inner cavity of the intermediate lock block is installed with a tripping spring.

[0006] As a preferred embodiment, the end of the intermediate lock block away from the overtravel adjusting nut is connected with the front end mounting plate, and the end of the contact spring pressing rod close to the overtravel adjusting nut is fixedly connected with the end of the tripping spring close to the contact spring pressing rod.

[0007] By adopting the technical scheme, the elastic force of the opening spring can be used to increase the convenience of the reset after opening, and the hand does not need to be dragged, thereby improving the convenience.

[0008] As a preferred embodiment, the inner wall of the contact spring pressing plate and the supporting crank arm is inserted with a magnetic pin, the outer edge of the magnetic pin is symmetrically sleeved with two gaskets, the outer side of the two gaskets is attached to the contact spring pressing plate, the inner wall of the magnetic pin is symmetrically provided with through holes, and the inner wall of the two through holes is inserted with a plug rod, the outer edge of the plug rod is attached to the outer side of the gasket, and the magnetic pin is made of magnetic material.

[0009] By adopting the technical scheme, the supporting crank arm and the contact spring pressing plate can be stably connected by the magnetic pin and the plug rod, and the plug rod will not be in contact with the outer side of the supporting crank arm, and the plug rod and the magnetic pin can be stably connected by magnetic attraction, so that the plug rod will not fall off during transportation on a bumpy road.

[0010] As a preferred embodiment, one end of the pull spring is fixedly connected to the outer side of the armature, and the other end of the pull spring is fixedly connected with a hook.

[0011] By adopting the technical scheme, the outer side of the armature can be provided with a certain traction force, so that the armature will not swing at will, and the hook can be connected to the connecting end.

[0012] As a preferred embodiment, the inner wall of the front end mounting plate is slidably connected with a sliding rod, the outer edge of the sliding rod is threadedly connected with a positioning nut, the end of the sliding rod away from the positioning nut is fixedly connected with a connecting end, the inner wall of the connecting end is provided with a circular hole, and the hook is hooked to the inner wall of the circular hole.

[0013] By adopting the technical scheme, the pull spring and the sliding rod can be connected by the hook and the circular hole, so that the armature can be reset by the elastic force of the pull spring during rotation, thereby improving the convenience of the reset.

[0014] As a preferred embodiment, the positioning nut is attached to the side of the front end mounting plate away from the pull spring.

[0015] By adopting the technical scheme, the sliding rod and the front end mounting plate can be stably connected by the positioning nut, so that they will not be easily disconnected, and the sliding rod can be removed from the inner wall of the front end mounting plate by removing the positioning nut, thereby disconnecting the hook.

[0016] As a preferred implementation form, the outer contact spring and the inner contact spring are arranged in the inner cavity of the contact spring pressing plate, the inner contact spring is arranged at the outer edge of the outer contact spring, and the two ends of the outer contact spring and the inner contact spring abut against the outer side of the supporting crank arm and the inner wall of the contact spring pressing plate respectively.

[0017] By adopting the above technical scheme, strong reset force can be provided when the switch is opened, and the quickness when the switch is opened is ensured. Meanwhile, the two ends of the outer contact spring and the inner contact spring abut against the outer side of the supporting crank arm and the inner wall of the contact spring pressing plate respectively, so that the outer contact spring and the inner contact spring are limited, and the outer contact spring and the inner contact spring cannot easily move out of position.

[0018] As a preferred implementation form, the top of the front end mounting plate is provided with a notch, and the middle of the opening and closing indicator is arranged on the inner wall of the notch.

[0019] By adopting the above technical scheme, the opening and closing indicator can be accommodated in the inner wall of the front end mounting plate, and the opening and closing indicator does not interfere with the front end mounting plate during operation.

[0020] The beneficial effects of the present application are as follows:

[0021] 1. The closing lock device for the 1.5kV direct current circuit breaker, the connecting end, the round hole, the hook, the connecting spring and the slide rod are connected, so that the armature can be reset by the elastic force of the connecting spring when rotating, and the convenience of the reset is improved. In addition, the armature can be positioned when not in use, so that the armature cannot easily swing, and the stability is ensured.

[0022] 2. The closing lock device for the 1.5kV direct current circuit breaker, the supporting crank arm and the contact spring pressing plate are stably connected by the magnetic pin and the plug rod, so that the supporting crank arm and the contact spring pressing plate cannot easily separate. In addition, the plug rod does not directly contact the outer side of the supporting crank arm by the two gaskets, and the plug rod and the magnetic pin are stably connected by the magnetic attraction principle, so that the plug rod cannot easily fall off when the device is transported on a bumpy road. In addition, the plug rod can be conveniently taken out for disassembly and maintenance after demagnetization. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The present application is a plan view schematic diagram;

[0024] Figure 2 The present application is a rear view partial enlarged schematic diagram;

[0025] Figure 3 The present application is a side view schematic diagram;

[0026] Figure 4 The present application is a cross-sectional schematic diagram;

[0027] Figure 5 It is a schematic view of a stereoscopic partial enlarged structure of the present application.

[0028] In the figure, 1 is a split and close indicator, 2 is a front end mounting plate, 3 is a secondary control terminal row, 4 is an insulating pull rod, 5 is a support crank, 6 is a contact spring pressing plate, 7 is an armature, 8 is a contact spring pressing rod, 9 is an outer contact spring, 10 is an inner contact spring, 11 is a front lock plate, 12 is a coil assembly, 13 is a middle lock block, 14 is an overtravel adjusting nut, 15 is a split spring, 16 is a magnetic force pin, 17 is a plug rod, 18 is a gasket, 19 is a pull spring, 20 is a hook, 21 is a connecting end, 22 is a sliding rod, and 23 is a positioning nut. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0030] Referring to Figures 1-5 A closing lock device for a 1.5kV direct current circuit breaker, comprising a split and close indicator 1, a front end mounting plate 2, and a support crank 5, the top of the front end mounting plate 2 is slidably connected with the split and close indicator 1, the outer side of the front end mounting plate 2 is fixedly installed with a secondary control terminal row 3, the inner wall of the support crank 5 is rotatably connected with an insulating pull rod 4, the outer side of the insulating pull rod 4 is sleeved with a contact spring pressing plate 6, the outer side of the split and close indicator 1 is fixedly connected with an armature 7, the inner wall of the support crank 5 is fixedly connected with a contact spring pressing rod 8, the outer edge of the contact spring pressing rod 8 is sleeved with an outer contact spring 9 and an inner contact spring 10, the side wall of the front end mounting plate 2 is fixedly installed with a front lock plate 11, the top of the front end mounting plate 2 is installed with a coil assembly 12, the end of the contact spring pressing rod 8 away from the support crank 5 is slidably connected with an overtravel adjusting nut 14, the end of the overtravel adjusting nut 14 away from the contact spring pressing rod 8 is connected with a middle lock block 13, and the inner cavity of the middle lock block 13 is installed with a split spring 15.

[0031] Referring to Figure 2 and Figure 4 the end of the middle lock block 13 away from the overtravel adjusting nut 14 is connected with the front end mounting plate 2, and the end of the contact spring pressing rod 8 close to the overtravel adjusting nut 14 is fixedly connected with the end of the split spring 15 close to the contact spring pressing rod 8, so that the convenience of resetting after splitting can be increased by means of the elastic force of the split spring 15, and thus the hand is not needed to be dragged, and the convenience is improved.

[0032] Referring to Figure 5The inner wall of the contact spring pressing plate 6 and the support crank arm 5 is inserted with a magnetic pin 16, the outer edge of the magnetic pin 16 is symmetrically sleeved with two gaskets 18, the two gaskets 18 are in contact with the outer side of the contact spring pressing plate 6, the inner wall of the magnetic pin 16 is symmetrically provided with through holes, and the inner wall of the two through holes is inserted with a plug rod 17, the outer edge of the plug rod 17 is in contact with the outer side of the gasket 18, the magnetic pin 16 is made of magnetic material, so that the support crank arm 5 and the contact spring pressing plate 6 can be stably connected by cooperating the plug rod 17 with the magnetic pin 16, so as to prevent them from being easily disconnected, and the plug rod 17 is not in direct contact with the outer side of the support crank arm 5 through the two gaskets 18, and the plug rod 17 and the magnetic pin 16 are stably connected through the magnetic attraction principle, so as to prevent them from being easily disconnected during transportation through a bumpy road section.

[0033] Referring to Figure 2 One end of the pull spring 19 is fixedly connected to the outer side of the armature 7, and the other end of the pull spring 19 is fixedly connected with the hook 20, so that a certain traction force can be provided for the outer side of the armature 7, and the armature 7 is prevented from being randomly swung, and the hook 20 is connected with the connecting end 21.

[0034] Referring to Figure 2 The inner wall of the front end mounting plate 2 is slidably connected with a slide rod 22, the outer edge of the slide rod 22 is threadedly connected with a positioning nut 23, one end of the slide rod 22 away from the positioning nut 23 is fixedly connected with the connecting end 21, the inner wall of the connecting end 21 is provided with a circular hole, and the hook 20 is hooked on the inner wall of the circular hole, so that the pull spring 19 and the slide rod 22 are connected by the circular hole and the hook 20, and the armature 7 is reset by the elastic force of the pull spring 19 when rotating, thereby improving the convenience of resetting.

[0035] Referring to Figure 2 The positioning nut 23 is in contact with the side of the front end mounting plate 2 away from the pull spring 19, so that the slide rod 22 and the front end mounting plate 2 are stably connected by the positioning nut 23, thereby preventing them from being easily disconnected, and the slide rod 22 can be removed from the inner wall of the front end mounting plate 2 by removing the positioning nut 23, thereby disconnecting the hook 20.

[0036] Referring to Figure 4The outer contact spring 9 and the inner contact spring 10 are arranged in the inner cavity of the contact spring pressing plate 6, the inner contact spring 10 is arranged at the outer edge position of the outer contact spring 9, and the two ends of the outer contact spring 9 and the inner contact spring 10 abut against the outer side of the supporting crank arm 5 and the inner wall of the contact spring pressing plate 6 respectively, so that a strong reset force can be provided when the circuit breaker is opened, the quickness when the circuit breaker is opened is guaranteed, and meanwhile, the two ends of the outer contact spring 9 and the inner contact spring 10 abut against the outer side of the supporting crank arm 5 and the inner wall of the contact spring pressing plate 6 respectively, so that the outer contact spring 9 and the inner contact spring 10 are limited, and it is guaranteed that the outer contact spring 9 and the inner contact spring 10 cannot easily move out of position.

[0037] Referring to Figure 5 The top of the front end mounting plate 2 is provided with a notch, and the middle of the opening and closing indicator 1 is arranged on the inner wall of the notch, so that the opening and closing indicator 1 can be accommodated in the inner wall of the front end mounting plate 2 and will not interfere with the front end mounting plate 2 during operation.

[0038] Working principle: when the device is used, first, the structure can be installed into the DC circuit breaker, then the closing operation can be performed by pressing the supporting crank arm 5 to drag the contact spring pressing rod 8 to move, the opening operation can be realized by utilizing the elastic force of the outer contact spring 9 and the inner contact spring 10 in cooperation with the elastic force of the opening spring 15, the round hole can be connected between the tension spring 19 and the sliding rod 22 by cooperating with the hook 20, so as to guarantee that the armature 7 can be reset by the elastic force of the tension spring 19 when rotating, thereby improving the convenience of resetting, the armature 7 can be positioned by traction when not in use, so as to guarantee that the armature 7 will not easily swing, the supporting crank arm 5 and the contact spring pressing plate 6 are stably connected by utilizing the magnetic force pin 16 to cooperate with the plug rod 17, so as to guarantee that the supporting crank arm 5 and the contact spring pressing plate 6 will not easily separate, and the plug rod 17 will not directly contact the outer side of the supporting crank arm 5 by arranging two gaskets 18, and the plug rod 17 and the magnetic force pin 16 are stably connected by the magnetic attraction principle, so as to guarantee that the plug rod 17 will not easily fall off when passing through a bumpy road section.

[0039] In the description of the present application, it should be pointed out that the positions or location relationships indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end" and "the other end" are based on the positions or location relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the devices or elements indicated must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] The present invention has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present invention. Those skilled in the art can make various modifications and variations to the present invention based on its spirit and principles, and these modifications and variations are also within the scope of the present invention.

Claims

1. A closing latching device for a 1.5kV DC circuit breaker, comprising an opening / closing indicator (1), a front mounting plate (2), and a support crank arm (5), characterized in that, The top of the front mounting plate (2) is slidably connected to a split / open indicator (1). A secondary control terminal block (3) is fixedly installed on the outer side of the front mounting plate (2). An insulating pull rod (4) is rotatably connected to the inner wall of the support crank arm (5). A contact spring pressure plate (6) is sleeved on the outer side of the insulating pull rod (4). An armature (7) is fixedly connected to the outer side of the split / open indicator (1). A contact spring pressure rod (8) is fixedly connected to the inner wall of the support crank arm (5). A contact spring pressure rod (8) is sleeved on the outer edge of the contact spring pressure rod (8). There are an outer contact spring (9) and an inner contact spring (10). A front locking plate (11) is fixedly installed on the side wall of the front mounting plate (2). A coil assembly (12) is installed on the top of the front mounting plate (2). An overtravel adjusting nut (14) is slidably connected to the end of the contact spring pressure rod (8) away from the support crank arm (5). An intermediate locking block (13) is connected to the end of the overtravel adjusting nut (14) away from the contact spring pressure rod (8). A tripping spring (15) is installed in the inner cavity of the intermediate locking block (13).

2. The closing latching device for a 1.5kV DC circuit breaker according to claim 1, characterized in that, The end of the intermediate locking block (13) away from the overtravel adjusting nut (14) is connected to the front mounting plate (2), and the end of the contact spring rod (8) near the overtravel adjusting nut (14) is fixedly connected to the end of the tripping spring (15) near the contact spring rod (8).

3. The closing latching device for a 1.5kV DC circuit breaker according to claim 1, characterized in that, Magnetic pins (16) are inserted into the inner walls of the contact spring pressure plate (6) and the support crank arm (5). Two washers (18) are symmetrically sleeved on the outer edge of the magnetic pin (16), and the two washers (18) are in contact with the outer side of the contact spring pressure plate (6). The inner wall of the magnetic pin (16) is symmetrically provided with through holes, and insert rods (17) are inserted into the inner walls of the two through holes. The outer edge of the insert rods (17) is in contact with the outer side of the washers (18). The magnetic pins (16) are made of magnetic material.

4. A closing latching device for a 1.5kV DC circuit breaker according to claim 1, characterized in that, One end of a tension spring (19) is fixedly connected to the outside of the armature (7), and the other end of the tension spring (19) is fixedly connected to a hook (20).

5. A closing latching device for a 1.5kV DC circuit breaker according to claim 4, characterized in that, The inner wall of the front mounting plate (2) is slidably connected to a slide rod (22), and the outer edge of the slide rod (22) is threadedly connected to a positioning nut (23). The end of the slide rod (22) away from the positioning nut (23) is fixedly connected to a connecting end (21). The inner wall of the connecting end (21) is provided with a round hole, and the hook (20) is hooked to the inner wall of the round hole.

6. A closing latching device for a 1.5kV DC circuit breaker according to claim 5, characterized in that, The positioning nut (23) is attached to the side of the front mounting plate (2) away from the tension spring (19).

7. A closing latching device for a 1.5kV DC circuit breaker according to claim 1, characterized in that, The outer contact spring (9) and the inner contact spring (10) are both located in the inner cavity of the contact spring pressure plate (6). The inner contact spring (10) is located at the outer edge of the outer contact spring (9). The two ends of the outer contact spring (9) and the inner contact spring (10) respectively abut against the outer side of the support crank arm (5) and the inner wall of the contact spring pressure plate (6).

8. A closing latching device for a 1.5kV DC circuit breaker according to claim 1, characterized in that, The top of the front mounting plate (2) is provided with a slot, and the middle part of the separation and opening indicator (1) is set on the inner wall of the slot.

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