Electrified self-locking device for valve mechanism of high-voltage cabinet

Abstract

The utility model relates to the technical field of electrical equipment, and discloses a live-line self-locking device for a valve mechanism of a high-voltage cabinet, which comprises a fixed plate, one side of the fixed plate is connected with a fixed shaft, a locking bracket is sleeved outside the fixed shaft, through holes are formed in protruding parts on the upper side and the lower side of the locking bracket, and the through holes are communicated with the fixed plate. An upper connecting lever yoke plate and a lower connecting lever yoke plate are arranged on one side of the locking bracket and outside the fixed shaft in a sleeving manner, a torsional spring is arranged between the upper connecting lever yoke plate and the lower connecting lever yoke plate, the torsional spring is arranged outside the fixed shaft in a sleeving manner, and the upper connecting lever yoke plate and the lower connecting lever yoke plate are reset through the torsional spring; according to the live-line self-locking mechanism of the valve, automatic locking in a high-voltage state is achieved through cooperation of the electromagnetic lock and the upper crank arm yoke plate, misoperation is effectively prevented, the safety of workers can be greatly improved through the live-line self-locking mechanism of the valve, and the live-line self-locking mechanism of the valve is small in occupied space and easy to install and maintain; and whether the equipment breaks down or not can be found in advance.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electrical equipment technical field, concretely is a kind of high-voltage cabinet's valve mechanism live locking device. BACKGROUND

[0002] In high-voltage electrical system, high-voltage cabinet as the key equipment of power distribution and control, the security of its internal valve mechanism is crucial.The traditional valve mechanism has the following problems:

[0003] 1.When the contact box inside occurs discharge, the traditional valve mechanism still can operate normally;

[0004] 2.The traditional valve mechanism has security risks in the process of personnel maintenance.

[0005] Therefore, the traditional high-voltage cabinet valve mechanism often lacks effective live locking mechanism, when the equipment in cabinet is live, if valve mechanism can be opened at will, it is easy to cause electric shock accident, seriously threatens the life safety of operating personnel.Therefore, design a kind of device that can automatically lock valve mechanism under high-voltage state, it is of great significance to improve the safety performance of high-voltage cabinet.

[0006] Based on this, a kind of high-voltage cabinet's valve mechanism live locking device is designed. CONTENT OF UTILITY MODEL

[0007] In view of the above situation, in order to overcome the defects of prior art, the utility model provides a kind of high-voltage cabinet's valve mechanism live locking device, effectively solve the problems raised in the above background.

[0008] To achieve the above object, the utility model provides the following technical scheme: a kind of high-voltage cabinet's valve mechanism live locking device, including fixed plate, fixed shaft, locking bracket, through-hole, upper elbow arm connecting plate, lower elbow arm connecting plate, torsional spring, electromagnetic lock, upper lock hole, lower lock hole, connecting shaft and shaft sleeve, the side of fixed plate is connected with fixed shaft, the outside of fixed shaft is equipped with locking bracket, the protruding portion of the upper and lower sides of locking bracket is all equipped with through-hole, the outside of fixed shaft of one side of locking bracket is equipped with upper elbow arm connecting plate and lower elbow arm connecting plate, and torsional spring is provided between upper elbow arm connecting plate and lower elbow arm connecting plate, and torsional spring is sleeved on the outside of fixed shaft, and reset is realized to upper elbow arm connecting plate and lower elbow arm connecting plate by torsional spring;

[0009] The protruding portion of the upper part of locking bracket is equipped with electromagnetic lock, the lock rod of electromagnetic lock is coaxially arranged with the through-hole of the protruding portion of the upper part of locking bracket, the side of upper elbow arm connecting plate and lower elbow arm connecting plate is all equipped with upper lock hole and lower lock hole, and the lock rod of electromagnetic lock is inserted into the upper lock hole and lower lock hole with movable cooperation to realize the locking of upper and lower valve.

[0010] Preferably, one side of the upper and lower elbow connecting plates is connected with a connecting shaft, and the outer part of the connecting shaft is sleeved with a shaft sleeve.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] The utility model discloses, through the cooperation of electromagnetic lock and upper elbow connecting plate, realize the automatic locking under high pressure state, effectively prevent the misoperation, and this kind of valve live self-locking mechanism can greatly improve the safety of staff, and the device occupies small, easy to install and maintain, can also find in advance whether the equipment has the fault. BRIEF DESCRIPTION OF DRAWINGS

[0013] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, explain the utility model together with embodiments of the utility model, and do not constitute the limitation to the utility model.

[0014] In the drawings:

[0015] Figure 1 It is the structural schematic diagram of the utility model;

[0016] Figure 2 It is the structural schematic diagram of another view of the utility model;

[0017] Figure 3 It is the front view of the utility model Figure 1 ;

[0018] In the drawing: 1, fixed plate;2, fixed shaft;3, locking support;4, through hole;5, upper elbow connecting plate;6, lower elbow connecting plate;7, torsional spring;8, electromagnetic lock;9, upper lock hole;10, lower lock hole;11, connecting shaft;12, shaft sleeve. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments only are a part of the embodiments of the utility model, not all the embodiments;Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without making the creative labor all belong to the range of protection of the utility model.

[0020] Embodiment one, by Figures 1-3The utility model provides a locking mechanism of high voltage cabinet, it includes fixed plate 1, fixed shaft 2, locking support 3, through -hole 4, upper elbow arm connecting plate 5, lower elbow arm connecting plate 6, torsional spring 7, electromagnetic lock 8, upper lock hole 9, lower lock hole 10, connecting shaft 11 and shaft sleeve 12, one side of fixed plate 1 is connected with fixed shaft 2, and the outside of fixed shaft 2 is equipped with locking support 3, and the upper and lower sides of locking support 3 are all equipped with through -hole 4, and one side of locking support 3 and located the outside of fixed shaft 2 is equipped with upper elbow arm connecting plate 5 and lower elbow arm connecting plate 6, and is equipped with torsional spring 7 between upper elbow arm connecting plate 5 and lower elbow arm connecting plate 6, and torsional spring 7 is equipped in the outside of fixed shaft 2, and the reset of upper elbow arm connecting plate 5 and lower elbow arm connecting plate 6 is realized through torsional spring 7,

[0021] The upper portion protruding part of locking support 3 is provided with electromagnetic lock 8, the lock rod of electromagnetic lock 8 is coaxially arranged with the through -hole 4 of the upper portion protruding part of locking support 3, and the upper lock hole 9 and the lower lock hole 10 are formed in one side of the upper elbow arm connecting plate 5 and the lower elbow arm connecting plate 6, and the lock rod of electromagnetic lock 8 is movably inserted into the upper lock hole 9 and the lower lock hole 10 to realize the opening and closing locking of the upper and lower valves.

[0022] The one side of the upper elbow arm connecting plate 5 and the lower elbow arm connecting plate 6 is connected with the connecting shaft 11, and the outside of the connecting shaft 11 is sleeved with the shaft sleeve 12.

[0023] Working principle:

[0024] When the high voltage cabinet is in the electrified state, the electromagnetic lock 8 is powered on, at this time, the lock rod of the electromagnetic lock 8 remains in the extended state, and is inserted into the through -hole 4 of the upper portion of the locking support 3 and the upper lock hole 9 or the lower lock hole 10 of the upper elbow arm connecting plate 5 corresponding thereto, to realize the locking of the valve mechanism; because the lock rod of the electromagnetic lock 8 is extended and clamped, the valve mechanism cannot be opened, thereby ensuring the safety under high voltage state;

[0025] When the high voltage cabinet is powered off, the electromagnetic lock 8 loses power, and the lock rod is retracted under the action of the internal spring, at this time, the lock rod of the electromagnetic lock 8 is completely separated from the upper lock hole 9 or the lower lock hole 10 by pressing the unlocking button, allowing the valve mechanism to be normally opened or closed;

[0026] The upper elbow arm connecting plate 5 and the lower elbow arm connecting plate 6 are connected on one side of the locking support 3 through the torsional spring 7, the torsional spring 7 has a certain pre-tightening force, so that the upper elbow arm connecting plate 5 and the lower elbow arm connecting plate 6 can maintain a certain angle relationship when not subjected to external force;

[0027] When the electromagnetic lock 8 is unlocked, the operator can manually push the valve mechanism, and the upper elbow arm connecting plate 5 and the lower elbow arm connecting plate 6 will be rotated under the action of external force during the pushing process, and once the external force disappears, the pre-tightening force of the torsional spring 7 will drive the upper elbow arm connecting plate 5 and the lower elbow arm connecting plate 6 to quickly restore to the initial position, preparing for the next locking;

[0028] When the high-voltage cabinet is not powered, the electromagnetic lock 8 is in the unlocked state, and the lock rod is retracted. At this time, the operating personnel can manually open or close the flap mechanism.

[0029] When the high-voltage cabinet is powered, the electromagnetic lock 8 is powered and locked. At this time, even if the unlocking button is pressed, the flap mechanism cannot be opened, because the lock rod of the electromagnetic lock 8 has been extended and stuck;

[0030] When the high-voltage cabinet is powered off, the electromagnetic lock 8 loses power and is unlocked. At this time, the operating personnel can press the unlocking button and manually open or close the flap mechanism. During the operation, the upper and lower elbow link plates 5 and 6 will automatically reset under the action of the torsional spring 7.

Claims

1. A high-voltage cabinet door mechanism with a live self-locking device, comprising a fixed plate (1), a fixed shaft (2), a locking bracket (3), a through hole (4), an upper crank connecting plate (5), a lower crank connecting plate (6), a torsional spring (7), an electromagnetic lock (8), an upper locking hole (9), a lower locking hole (10), a connecting shaft (11), and a shaft sleeve (12), characterized in that: One side of the fixed plate (1) is connected with a fixed shaft (2), the outside of the fixed shaft (2) is sleeved with a locking support (3), the protruding parts on the upper and lower sides of the locking support (3) are both provided with through holes (4), one side of the locking support (3) and outside the fixed shaft (2) is sleeved with an upper elbow connecting plate (5) and a lower elbow connecting plate (6), a torsional spring (7) is arranged between the upper elbow connecting plate (5) and the lower elbow connecting plate (6), the torsional spring (7) is sleeved outside the fixed shaft (2), and the reset of the upper elbow connecting plate (5) and the lower elbow connecting plate (6) is realized through the torsional spring (7); The upper protruding part of the locking support (3) is provided with an electromagnetic lock (8), the lock rod of the electromagnetic lock (8) is coaxially arranged with the through hole (4) of the upper protruding part of the locking support (3), one side of the upper elbow connecting plate (5) and the lower elbow connecting plate (6) is provided with an upper lock hole (9) and a lower lock hole (10), and the lock rod of the electromagnetic lock (8) is movably connected with the upper lock hole (9) and the lower lock hole (10) through plug-in connection, so that the opening and closing of the upper and lower valves are realized.

2. A high voltage switchgear latch mechanism with electrically charged self-locking device according to claim 1, characterized in that: One side of the upper elbow connecting plate (5) and the lower elbow connecting plate (6) is connected with a connecting shaft (11), and the outside of the connecting shaft (11) is sleeved with a shaft sleeve (12).

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