CN113258411B - Plug-in type grounding connection device with loosening alarm function - Google Patents

Abstract

The invention discloses a plug-in grounding connection device with a loose alarm, which includes a grounding rod 2, the left end of the grounding rod is connected to a grounding cord, and the right end of the grounding rod passes through the outer locking hand wheel 3, lock Tightener 5, inner locking sleeve 6, the inner locking sleeve is connected to the earth, the right end of the grounding rod penetrates through the inner locking sleeve and is connected with a micro switch 11, and the micro switch is connected with audible Light and voice alarm 12, the locking device is slidably installed in the space formed by the outer locking handwheel and the inner locking sleeve, and the ground rod is detachably fixedly connected to the locking device. The device is easy to operate, convenient and firm to install, and can alarm when loose, safe and reliable.

Description

Pluggable ground connection with loose alarm

technical field

The invention relates to the field of high-voltage switching operations of smart substations for safe operation of power grids, and in particular relates to a plug-in grounding connection device with a loose alarm.

Background technique

There are two ways to connect the grounding terminal of the traditional grounding wire dedicated to the smart substation:

The first type is ordinary copper wire clip type. Special tools are required for fastening during installation, which is extremely inconvenient and prone to axial shear loosening. If the quality of the installation personnel is not high, the tightening pressure of the nut is improper, or the pressure is too high, it will cause partial deformation and swelling of the contact surface, reduce the contact area, increase the contact resistance, and greatly affect the grounding effect. If the pressure is too small, the connection will easily become loose. So that the equipment cannot achieve the proper protective grounding effect.

The second type is the butterfly nut lead screw through the heart type. The installation is cumbersome and time-consuming. According to the principle of leverage, the power arm is short, and the installation is not easy to tighten. Even if a mechanical lock is installed, it cannot be disassembled and loosened by mistake, and there is no loosening alarm device, so that the grounding wire cannot be effectively grounded and lost. Protection of persons and equipment. Therefore, it is very necessary to develop a plug-in smart substation special-purpose grounding wire quick connection device with a loosening alarm.

Contents of the invention

In view of the above problems, the present invention discloses a plug-in grounding connection device with a loose alarm. The device is easy to operate, convenient and firm to install, and can alarm when it is loose, which is safe and reliable.

In order to realize above-mentioned technical purpose, the present invention adopts following technical scheme:

A pluggable grounding connection device with a loose alarm, including a grounding rod, the left end of the grounding rod is connected to the grounding cord, and the right end of the grounding rod passes through the outer locking handwheel, locking device, and inner lock from left to right. The inner locking sleeve is connected to the ground, the right end of the grounding rod penetrates through the inner locking sleeve and is connected to a micro switch, and the micro switch is connected to an acousto-optic voice alarm. The locking device is slidably installed in the space formed by the outer locking handwheel and the inner locking sleeve, and the ground rod is detachably fixedly connected with the locking device.

Preferably, the locking device is a sleeve with first slopes at both ends, and a plurality of lockable and deformable grooves are provided on the surface of the sleeve.

Preferably, the right end of the outer locking handwheel is provided with a plurality of first positioning holes, the inner locking sleeve is connected with a handwheel locking frame, and the handwheel locking frame is provided with a first positioning hole. The second positioning hole for the connection.

Preferably, both the inner wall of the outer locking handwheel and the inner locking sleeve are provided with a second inclined surface that cooperates with the inclined surface.

Preferably, the inner cavity of the outer locking handwheel is provided with a positioning groove, and a snap ring is fitted in the positioning groove.

Preferably, the inner locking sleeve is connected with a bracket 7, and the bracket is connected to the ground.

Beneficial effects of the present invention

In the present invention, the grounding flexible wire is connected to the micro switch through the grounding rod, and the micro switch is connected to the sound and light voice alarm. When the connection is loose, the grounding rod slides along the inner locking sleeve, the micro switch is connected, and the sound and light alarm Alarm prompt. Simple operation, plug and play, quick and firm installation, saving time and effort.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the overall structure diagram one of the present invention;

Fig. 2 is the overall structure diagram two of the present invention;

Fig. 3 is a structural diagram of the locking device;

Fig. 4 is a structural diagram of the external locking handwheel;

In the figure, 1. Mounting screw, 2. Ground rod, 3. Outer locking handwheel, 4. Circlip, 5. Locker, 6. Inner locking sleeve, 6-1, Limiting protrusion, 7 , handwheel locking frame, 8, screw, 9, bracket, 10, nut, 11, micro switch, 11-1, micro switch button, 11-2, external outlet of micro switch, 12, sound and light voice alarm Device, 13, washer.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments of the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "inner", "outer", "left", and "right" is based on the orientation or positional relationship shown in the drawings, and is only for convenience The present invention is described and simplified descriptions do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the present invention.

The present invention discloses a plug-in grounding connection device with a loose alarm as shown in Figure 1-2. The grounding cord is connected to the grounding rod 2 through the installation screw 1, and the right end of the grounding rod passes through the outer locking handle from left to right in sequence. Wheel 3, locking device 5, inner locking sleeve 6, the right end of the ground rod penetrates the inner locking sleeve and is connected with the micro switch button 11-1 on the left end of micro switch 11, and the micro switch passes through the micro switch The external outlet socket 11-2 is electrically connected with the sound and light voice alarm 12. A bracket 9 is connected to the inner locking sleeve, and the bracket 9 is connected to the ground through a screw 8 and a washer 13 .

The outer locking handwheel 3 is a rotary body with a flange at the right end. As shown in Figure 4, the inside of this rotary body is hollow, and a positioning groove is processed on the side wall of the hollow cavity, and a jumper spring 4 is installed in the positioning groove. The inner locking sleeve 6 is also a hollow revolving body, which is divided into left and right parts, the diameter of the left part is larger than that of the right part, and the outer wall of the left part is connected with the inner wall of the cavity of the outer locking handwheel 3 by threads . A locking device 5 is installed in the space formed by the threaded connection of the outer locking hand wheel 3 and the inner locking sleeve 6. The outer wall of the locking device is processed with a card groove, and the card groove is connected with the clip spring 4 to realize locking. The positioning of the device in the outer locking handwheel. Multiple grooves are arranged on the outer wall of the locker parallel to the axis of the locker, as shown in Figure 3, the multiple grooves are divided into multiple first grooves and multiple second grooves, the first groove The left end is open and the right end is closed, the right end of the second groove is opened and the left end is closed, and the first groove and the second groove are arranged at intervals. Both left and right ends of the locking device are provided with a first inclined plane, and a second inclined plane cooperating with the first inclined plane is provided in the inner cavity of the left end of the outer locking handwheel and the inner cavity of the left part of the inner locking sleeve 6 at the right end. When the outer locking handwheel is locked with the inner locking sleeve, the locking device is squeezed and deformed to fix the ground rod.

The right end of the locking handwheel 3 is provided with a flange, and a plurality of positioning holes are processed on the flange. The outer wall of the inner locking sleeve 6 is connected with a handwheel locking frame 7, and the upper end of the handwheel locking frame is provided with a first positioning hole. the second positioning hole.

The connections of the unit are installed as follows:

The first step is to install the grounding end side of the soft connection wire of the special grounding wire of the smart substation to the grounding rod 2 through the screw 1;

In the second step, connect the outer locking handwheel 4 and the locking device 5 so that the first slope of the locking device is in contact with the second slope of the outer locking handwheel in a small area;

The third step is to install the circlip 4 in the positioning groove of the outer locking handwheel, and install and position the locking device 5 in the outer locking handwheel 3;

The fourth step is to rotate and connect the outer locking handwheel 3 with the inner locking sleeve 6, so that the first slope of the locking device is in contact with the second slope of the inner locking sleeve in a small area;

The fifth step is to set the bracket 9 between the limit protrusion 6-1 of the inner locking sleeve and the nut 10, and tighten the nut;

The sixth step is to fix the micro switch 11 to the middle position of the bottom of the inner locking sleeve 6;

In the seventh step, use the screw 8 and the washer 13 to firmly fix the space on the ground.

Step 8: Insert the grounding rod into the outer locking handwheel and the inner locking sleeve to reach the micro switch button 11-1, and press the micro switch button to make the micro switch 11 in the off state, then rotate and tighten it The outer locking handwheel and the inner locking sleeve increase the contact area between the two, and at the same time squeeze the locking device, the groove gap of the locking device is reduced, and finally shrink and firmly hold the grounding rod 2, and the first positioning hole Lock with the second positioning hole with five anti-locks. The acousto-optic voice alarm 12 is installed on the micro switch through the external outlet of the micro switch, and is in a standby state. as shown in picture 2.

If the grounding rod 2 gets loose, the micro switch button 11-1 will pop up automatically, and the power supply will be turned on, as shown in Figure 1, and the sound and light voice alarm 12 will be triggered to report to the police.

When dismounting, remove the sound and light voice alarm 12 from the micro switch 11, open the five anti-locks, rotate the outer locking handwheel 3 and the inner locking sleeve 6 to unscrew, so that the first inclined plane and the second inclined plane The contact area is reduced, and under the condition of the self-elasticity of the groove of the locking device, the gap of the groove increases, and the locking device no longer clamps the grounding rod, and the grounding rod can be pulled out from the left end.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the present application will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (4)

1. The plug-in type grounding connection device with the loosening alarm is characterized by comprising a grounding rod (2), wherein the left end of the grounding rod is connected with a grounding flexible wire, the right end of the grounding rod sequentially penetrates through an outer locking hand wheel (3), a locker (5) and an inner locking sleeve (6) from left to right, the inner locking sleeve is connected with the ground, the right end of the grounding rod penetrates through the inner locking sleeve and then is in contact connection with a microswitch (11), the microswitch is connected with an acousto-optic voice alarm (12), the locker is slidably mounted in a space formed by the outer locking hand wheel and the inner locking sleeve, and the grounding rod is detachably and fixedly connected with the locker;

the locker (5) is a sleeve with first inclined planes at two ends, and a plurality of grooves capable of being locked and deformed are formed in the surface of the sleeve; the plurality of grooves are divided into a plurality of first grooves and a plurality of second grooves, the left end of the opening of the left end of each first groove is closed, the left end of the opening of the right end of each second groove is closed, and the first grooves and the second grooves are arranged at intervals; when the outer locking hand wheel is locked with the inner locking sleeve, the locker is extruded and deformed to fix the grounding rod;

the right end of the outer locking hand wheel is provided with a plurality of first positioning holes, the inner locking sleeve is connected with a hand wheel locking frame (7), and the hand wheel locking frame is provided with a second positioning hole connected with a certain first positioning hole.

2. The pluggable ground connection device with a loosening alarm function as claimed in claim 1, wherein the inner wall of the outer locking hand wheel and the inner wall of the inner locking sleeve are provided with second inclined surfaces matched with the inclined surfaces.

3. The pluggable grounding connection device with a looseness alarm function as claimed in claim 1, wherein a positioning groove is formed in an inner cavity of the outer locking hand wheel, and a clamp spring is installed in the positioning groove in a matched mode.

4. The plug-in grounding connection with a loosening alarm as claimed in claim 1, characterized in that the inner locking sleeve is connected to a support (9) which is connected to ground.

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