CN207068708U - Alternating current-direct current is spaced apart secondary anti-misoperation locking device - Google Patents

Abstract

The utility model provides an AC/DC open secondary anti-misoperation locking device, which includes a body and a lock. The body includes a hollow sleeve, and the front end of the sleeve is fixed on a hollow trapezoidal block. The left and right sides of the part are respectively provided with through holes, and a snap ring is arranged in the trapezoidal block. The snap ring is in the shape of "Ω", and it has two free ends extending outward. The two through holes in the front part go out; there is a spring in the sleeve, and a push rod in the rear of the sleeve. The front end of the spring is fixedly connected with the snap ring, and the rear end is fixedly connected with the push rod. The push rod is inserted into the sleeve from the rear of the sleeve, and can move along the axial direction of the sleeve; a limit mechanism is arranged between the push rod and the sleeve to limit the position where the push rod moves forward and backward; The middle part of the push rod is provided with a circular padlock hole, and the lockset is matched with the circular padlock hole; the sleeve, the trapezoidal block and the push rod are all made of insulating materials.

Description

AC and DC circuit breaker secondary anti-misoperation locking device

technical field

The utility model belongs to the technical field of safety control devices for separating and closing AC/DC air switches, in particular to a reliable anti-misoperation locking device used for effective management and control of AC/DC air switches at indoor and outdoor maintenance and other work sites in the electric power industry.

Background technique

The secondary AC/DC circuit breaker anti-mis-switching device is a practical device for mandatory safety management control and warning functions used in the power industry for switching operations and equipment maintenance operations. The main function is to perform switching operations, maintenance of electrical equipment The secondary AC/DC circuit breaker that may be mistakenly switched on during the work process is subject to mandatory safety control and safety warnings to ensure that the operator avoids personal injury and accidental damage caused by the reverse power transmission of the secondary circuit caused by the wrong switch of the circuit breaker during the work process. Vicious electric accidents such as pulling the knife switch with load and mis-closing the grounding knife switch caused by the control power supply of the electric motor occurred.

At present, there are not many management methods for the secondary AC and DC circuit breakers in various industries. Most of them adopt the control and management of power boxes, voltage transformer terminal boxes and mechanism boxes, but it brings a lot of inconvenience to the on-site operators. The on-site operation time is delayed and the workload of the operation and maintenance personnel is increased. Hanging warning signs or pasting red tape on the handle of the air switch are only used as safety reminders, and there are no compulsory measures. At the same time, most of the warning signs are made of metal materials. If they fall and touch the metal part of the secondary cable, it is easy to cause short circuit or grounding, which poses a great safety hazard. The more targeted is the open fixture, which uses high-elastic insulating materials. The upper part is a block structure, and the lower part of the block structure is composed of two pins arranged at intervals. The distance between the jacks on the open handle is equal, and the lateral width of the pins is smaller than the width of the jack on the open handle. Thereby, the effect of controlling the circuit breaker can be played, but the open clamp cannot be used repeatedly, and the tool does not have a warning function and is not practical.

Utility model content

The technical problem to be solved by this utility model is to develop a secondary anti-misoperation locking device for AC and DC circuit breakers, so that on-site operators will not be harmed by secondary reverse power transmission, and the device must be safe and insulated, portable and practical, with strong controllability and easy maintenance. Simple and easy to use for field workers.

The technical scheme provided by the utility model is:

An AC/DC circuit breaker secondary error-proof locking device, comprising a body and a lock, the body includes a hollow sleeve, the front end of the sleeve is fixed on a hollow trapezoidal block, and the left and right sides of the front part of the trapezoidal block Through holes are respectively provided, and a clasp is provided in the trapezoidal block. The clasp is in the shape of "Ω", and has two free ends extending outward. The through hole is pierced; there is a spring in the sleeve, and a push rod at the rear of the sleeve. The front end of the spring is fixedly connected with the snap ring, and the rear end is fixedly connected with the push rod. The rear part of the push rod is inserted into the sleeve and can move along the axial direction of the sleeve; a limit mechanism is set between the push rod and the sleeve to limit the position of the push rod moving forward and backward; the middle part of the push rod is set at There is a circular padlock hole, and the lock fits with the circular padlock hole;

The sleeve, the trapezoidal block and the push rod are all made of insulating materials.

Preferably, the lock includes a lock case and a lock hook, the lock case is made of insulating material, an insulating sleeve is sheathed on the outside of the lock hook, the lock hook passes through the circular padlock hole and Can be fastened with the lock case.

Preferably, a reflective film is pasted on the front and back of the lock case, and the reflective film is provided with a text safety mark, a graphic safety mark and a device code.

Preferably, the sleeve, the trapezoidal block, the push rod and the lock housing are made of plastic.

Preferably, the limiting mechanism includes a T-shaped slot provided on the side wall of the sleeve, and a limiting pin provided on the push rod, and the limiting pin can slide in the T-shaped slot.

The beneficial effects of the utility model are reflected in the following aspects: the AC and DC circuit breaker secondary anti-misoperation locking device provided by the utility model can complete the locking control of the AC and DC secondary circuit breaker, and it is convenient and simple to use at the work site, and the locking link is seamless , the safety warning effect is obvious.

Description of drawings

Fig. 1 is a front view of the secondary anti-misoperation locking device of the DC circuit breaker described in the present invention.

Fig. 2 is a left view of the secondary anti-misoperation locking device of the DC circuit breaker described in the present invention.

Fig. 3 is a schematic diagram of the structure of the body described in the present invention.

Fig. 4 is a schematic structural diagram of the lock set of the present invention.

Fig. 5 is a schematic diagram of the position of the snap ring according to the present invention when it is snapped into the small holes on both sides of the open handle.

Detailed ways

The utility model will be described in further detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it by referring to the description.

As shown in Figure 1 and Figure 2, the utility model provides a secondary anti-misoperation locking device for AC and DC circuit breakers. A safety management tool used to control the opening and closing of AC and DC circuit breakers for secondary damage caused by reverse power transmission in the DC circuit. The AC/DC circuit breaker secondary anti-misoperation locking device includes a body 110 and a lock 120 .

Referring to FIG. 3 together, the body 110 includes a plastic sleeve 113 , the plastic sleeve 113 is hollow, and a hollow trapezoidal plastic block 112 is fixedly disposed at the front end of the plastic sleeve 113 . The front part of the trapezoidal plastic block 112 is narrow and the rear part is wide. The left and right sides of the front part of the trapezoidal plastic block 112 are respectively provided with through holes. The snap ring 111 is in the shape of "Ω" and is made of stainless steel wire. The outer diameter of the stainless steel wire is less than the inner diameter of the small holes on both sides of the open handle. The snap ring 111 has two free ends extending outward. The snap ring 111 is disposed in the plastic sleeve 113 , and two free ends pass through two through holes in the front of the trapezoidal plastic block 112 respectively, and extend outward.

A spring 114 is disposed inside the plastic sleeve 113 , and the front end of the spring 114 is fixed to the middle part of the snap ring 111 . A plastic push rod 116 is arranged at the rear portion of the plastic sleeve 113, and the plastic push rod 116 is inserted into the plastic sleeve 113 from the rear portion of the plastic sleeve 113, and the plastic push rod 116 can be inserted along the plastic sleeve 113. The axial direction moves back and forth relative to the plastic sleeve 113 . The front end of the plastic push rod 116 is fixedly connected with the rear end of the spring 114 . The side wall of the plastic sleeve 113 is provided with a "T"-shaped slot, and the plastic push rod 116 is provided with a limit pin, and the limit pin is matched with the "T"-shaped slot to make the limit pin The plastic push rod 116 can be slid along the "T"-shaped slot, so that the plastic push rod 116 will not slip out of the plastic sleeve 113 . A circular padlock hole 115 is arranged in the middle of the plastic push rod 116 . In the initial state, the plastic push rod 116 is located at the rearmost end of the plastic sleeve 113, the spring 114 is in a naturally elongated state, and the clasp 111 is entirely located in the trapezoidal plastic block 112 except for two free ends.

When the body 110 is in use, first push the plastic push rod 116 forward, and the spring 114 is compressed by force, so that a forward thrust is applied to the snap ring 111 through the spring 114, so that the snap ring 111 protrudes forward, in the shape of "Ω" The opening keeps getting smaller, and the plastic push rod 116 is slowly released. Under the force of the spring 114, the plastic push rod 116 slowly moves backward, and the "Ω"-shaped opening gradually increases. Select a suitable opening size, insert the two free ends of the snap ring 111 into the small holes on both sides of the AC/DC air switch handle to be locked, and then completely release the plastic push rod 116, under the force of the spring 114, "Ω" The word opening is continuously opened. At this time, the two free ends of the snap ring 111 are completely inserted into the small holes on the left and right sides of the circuit breaker, as shown in FIG. 5 . At this time, the circular padlock hole 115 is located outside the plastic sleeve 113 .

As shown in FIG. 4 , the lock 120 includes a lock case 121 and a lock hook 122 , and an insulating sleeve 123 is sleeved on the outer side of the lock hook 122 . Paste the reflective film of substrate white on the positive and negative sides of lock housing 121, what paste in the middle of white reflective film is black and red luminous film molding " forbid shutting someone to work " text safety mark 124, and graphic safety mark 125, Device code 126 with numbered lettering pasted on top.

The lock 120 is used in conjunction with the body 110 , the lock hook 122 passes through the circular padlock hole 115 , and the lock hook 122 is fastened with the lock case 121 , and the key is pulled out after locking. The movement of the plastic push rod 116 can be restricted by the lock 120 so that it cannot be pushed forward. The "Ω"-shaped snap ring 111 securely fixes the body 110 on the AC/DC secondary circuit breaker to be controlled, and completes the blocking control of the AC/DC secondary circuit breaker. The secondary anti-misoperation locking device of the AC and DC circuit breaker is convenient and simple to use at the work site, and the locking link is tightly fitted, and the safety warning function is obvious.

The main body casing and the lock casing 121 of the utility model AC/DC open secondary anti-misoperation locking device are all made of plastic material. The plastic selected this time is a thermosetting plastic made of epoxy resin as the main raw material. It has excellent Adhesive, electrical insulation, heat resistance and chemical stability, small shrinkage and water absorption, good mechanical strength and so on. The red and black luminous film pasted on the front and back of the lock case 121 can continue to glow in the dark for about 12 hours after absorbing general visible light for 10 to 20 minutes. The white reflective film pasted on the bottom plate is a new type of reflective material. Its reflective principle is to reflect the irradiated light back into people's line of sight through reflective beads, forming a reflective effect, and the reflective effect is more obvious at night. Instructions for on-site use, directly clamp the body part with the "Ω"-shaped snap ring 111 in the small holes on both sides of the handle of the AC/DC air switch that needs to be locked. Take out the lockset, put the lock hook in the circular padlock hole 115 on the plastic push rod 116, lock and pull out the key. At this time, due to the partial control of the main body 110, the closing handle of the AC/DC circuit breaker cannot move, and the structure of the upper trapezoidal plastic block 112 blocks the circuit breaker handle and cannot be closed. The red and black luminous film on the front and back of the lock case can spontaneously indicate light at night or in poor light environment, which can improve the visual impact effect. With the white reflective film as an auxiliary light source, it can realize the function of night indication to the greatest extent and improve the warning, identification. The reflective indication design adopted by the utility model greatly strengthens the warning function of the device at night. The utility model has been applied in the field, and the practice proves that the utility model improves the management and control of the secondary AC/DC circuit breaker at the work site, and is worthy of popularization and application in electric power enterprises and substations across the country.

Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and implementation. It can be applied to various fields suitable for the utility model. Additional modifications can readily be made by those skilled in the art. Therefore, the invention should not be limited to the specific details and examples shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims (5)

1. a kind of alternating current-direct current is spaced apart secondary anti-misoperation locking device, it is characterised in that including body and lockset, during the body includes Empty sleeve, the barrel forward end, which is fixed, has been located at hollow trapezoid block, and the anterior left and right sides of the trapezoid block is respectively arranged with Through hole, snap ring is located in trapezoid block, the snap ring is in " Ω " shape, and it has two free ends to stretch out, and two certainly Passed respectively from two anterior through holes of trapezoid block by holding；Spring has been located in sleeve, has been located at push rod at sleeve rear portion, institute Spring at front end to be stated to be fixedly connected with snap ring, rear end is fixedly connected with push rod, and the push rod is inserted into sleeve from the rear portion of sleeve, And it can be moved along sleeve axis direction；Limited position mechanism is located between the push rod and sleeve, before and after limiting push rod Mobile position；Circular lock- receiving aperture is located in the middle part of the push rod, the lockset is engaged with circular lock- receiving aperture；

The sleeve, trapezoid block, push rod are adopted and are made from an insulative material.

2. alternating current-direct current according to claim 1 is spaced apart secondary anti-misoperation locking device, it is characterised in that the lockset includes lock Shell and latch hook, the lock housing, which is adopted, to be made from an insulative material, and the latch hook outer sheath is provided with insulating sleeve, and the latch hook is from the circle Shape lock- receiving aperture is passed through and can be interlocked with lock housing.

3. alternating current-direct current according to claim 2 is spaced apart secondary anti-misoperation locking device, it is characterised in that the lock housing positive and negative Reflective membrane is pasted with, word secure ID, figure secure ID and device coding have been located on the reflective membrane.

4. alternating current-direct current according to claim 3 is spaced apart secondary anti-misoperation locking device, it is characterised in that the sleeve, trapezoidal Block, push rod and lock housing are made of plastic material.

5. alternating current-direct current according to claim 4 is spaced apart secondary anti-misoperation locking device, it is characterised in that the position-limit mechanism bag The T-shaped neck being located in sleeve lateral wall, and the spacer pin being arranged on push rod are included, the spacer pin can be slided in T-shaped neck It is dynamic.