CN204857508U - An explosion-proof switch interlock mechanism with test function - Google Patents

Abstract

The utility model discloses an interlocking mechanism of an explosion-proof switch with a test function, which comprises a main circuit isolating switch operating mechanism, a test switch operating mechanism and a locking mechanism installed on the front plate of the explosion-proof switch, a test switch operating mechanism and a main circuit isolating switch The operating mechanisms are mutually locked. The locking mechanism is used to lock the main circuit isolating switch operating mechanism. The rear end of the locking mechanism cooperates with the through hole on the locking plate of the explosion-proof switch door cover. The first interlocking plate, the test switch joystick and the test switch, the test switch handle and the first interlock plate are all fixed on the first joystick sleeve, and the rear end of the test switch joystick passes through the front plate of the explosion-proof switch and connects with the test switch. Connection, the test switch joystick is firmly connected with the first joystick cover, and the first gap is opened on the left part of the first interlocking plate. The utility model realizes various function detections under the isolated state of the main power supply of the switch, completely eliminates potential safety hazards, and is safe and reliable in use.

Description

An explosion-proof switch interlock mechanism with test function

technical field

The utility model relates to an explosion-proof switch for underground coal mines, in particular to an interlocking mechanism of the explosion-proof switch with a test function.

Background technique

Explosion-proof switches used in underground coal mines need to be checked for suction, breaking, and various protection functions such as whether the intelligent controller is running normally and whether the protection functions are normal before ground debugging or underground operation in coal mines, so as to ensure the use of explosion-proof switches. reliability. At present, it is mainly to energize the explosion-proof switch, and then carry out detection, so that the isolating switch is rotated to the power transmission position, and then the transformer is controlled to be energized, and then various functional tests are carried out. At this time, the front end of the vacuum contactor is charged. When doing a contactor opening test or a fault breaking test, as long as the vacuum contactor is closed, its load end will be charged, causing a safety hazard.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the above-mentioned prior art, and provide an explosion-proof switch interlocking mechanism with a test function, which has a simple structure, novel and reasonable design, and is easy to operate, effectively realizing the switching of the main power supply in an isolated state. Various function tests completely eliminate potential safety hazards, making it safe and reliable to use.

In order to achieve the above purpose, the technical solution adopted by the utility model is: an explosion-proof switch interlocking mechanism with test function, which is characterized in that it includes a main circuit isolating switch operating mechanism and a test switch operating mechanism installed on the front plate of the explosion-proof switch. and a locking mechanism, the test switch operating mechanism is set at a position close to the main circuit isolating switch operating mechanism and the two are mutually locked, and the locking mechanism is set at a position close to the main circuit isolating switch operating mechanism and is used for locking The main circuit isolating switch operating mechanism, the rear end of the locking mechanism cooperates with the through hole on the locking plate of the explosion-proof switch door cover, the locking plate of the explosion-proof switch door cover is located at the rear of the locking mechanism, and the explosion-proof switch door cover is locked The plate is installed on the explosion-proof switch door cover. The test switch operating mechanism includes the test switch handle, the first joystick cover, the first interlock plate, the test switch joystick and the test switch. The test switch handle and the first The interlock plates are all fixed on the first joystick sleeve, the test switch handle is located in front of the first interlock plate, the rear end of the test switch joystick passes through the front plate of the explosion-proof switch and the end is connected with the test switch , the test switch joystick is fixedly connected with the first joystick cover through the first fixing pin, the test switch joystick is rotationally connected with the first joystick cover and the front plate of the explosion-proof switch, and the first interlocking plate There is a first gap in the left part.

The above-mentioned explosion-proof switch interlock mechanism with test function is characterized in that: the main circuit isolating switch operating mechanism includes an isolating reversing switch operating handle, a second joystick cover, a second interlocking plate, an isolating reversing switch The switch joystick and the isolating reversing switch, the operating handle of the isolating reversing switch and the second interlocking plate are all fixed on the second operating lever sleeve, and the operating handle of the isolating reversing switch is located on the second interlocking plate In the front, the rear end of the isolating reversing switch joystick passes through the front plate of the explosion-proof switch and the end is connected to the isolating reversing switch, and the isolating reversing switch joystick is fixedly connected to the second joystick sleeve through the second fixing pin , the test switch joystick is rotatably connected to the second joystick cover and the front plate of the explosion-proof switch, a second notch is opened on the left part of the second interlocking plate, and a second notch is opened on the right part of the second interlocking plate The third notch, the second notch fits with the front end of the locking mechanism, the third notch fits with the first interlocking plate, and the first notch fits with the second interlocking plate.

The above-mentioned interlocking mechanism of an explosion-proof switch with a test function is characterized in that: the front plate of the explosion-proof switch is pierced and fixed with a second bushing, and a second copper sleeve is embedded and fixed in the second bushing. The operating rod of the isolating reversing switch passes through the second copper sleeve and is rotatably connected with the second copper sleeve.

The above-mentioned explosion-proof switch interlock mechanism with test function is characterized in that: the distance between the operating handle of the isolating reversing switch and the second joystick cover and between the second interlock plate and the second joystick cover The connection method is welding.

The above-mentioned interlocking mechanism of an explosion-proof switch with a test function is characterized in that: the front plate of the explosion-proof switch is pierced and fixed with a first bushing, and a first copper sleeve is embedded and fixed in the first bushing. The operating rod of the test switch passes through the first copper sleeve and is rotatably connected with the first copper sleeve.

The above-mentioned interlocking mechanism of an explosion-proof switch with a test function is characterized in that the connections between the handle of the test switch and the first joystick cover and between the first interlock plate and the first joystick cover are uniform. for soldering.

The above-mentioned explosion-proof switch interlocking mechanism with test function is characterized in that: the locking mechanism includes a door electric interlock shaft and a third shaft sleeve, and the door electric interlock shaft passes through the third shaft sleeve and is connected to the first shaft sleeve. The three shaft sleeves are threaded, the third shaft sleeve is fixed on the front plate of the explosion-proof switch, the front end of the door electric interlock shaft is matched with the second gap, and the rear end of the door electric interlock shaft is connected Cooperate.

The above-mentioned explosion-proof switch interlock mechanism with test function is characterized in that: the front end of the door electric interlock shaft is provided with a groove.

Compared with the prior art, the utility model has the following advantages:

1. The utility model has simple structure, reasonable design and convenient operation.

2. The utility model effectively realizes the functional detection of the switch main power supply in the isolated state. During the test, the isolating switch is at the zero position, and the test switch operating mechanism rotates an angle clockwise. At this time, the first joint of the test switch operating mechanism The arc surface of the lock plate is turned to the third gap of the main circuit isolating switch operating mechanism, and the main circuit isolating switch operating mechanism is blocked. At this time, the control transformer is energized, the intelligent protector operates, and the contactor pull-in coil is also energized. Contactor pull-in test; when pull-in, because the front-end isolating switch is at zero position, the front-end of the contactor is isolated from the main power supply, and the rear-end load side is not charged, and its function verification is only performed under the coil pull-in voltage provided by the control transformer. Completely eliminate potential safety hazards.

3. In the utility model, when the explosion-proof switch needs to be closed and operated, turn the main circuit isolating switch operating mechanism to control the transformer to be energized, and at the same time lock the isolating reversing switch; when the switch is running, turn the isolating reversing switch to the power transmission position to control When the transformer is energized, the front end of the contactor is energized, and at the same time, the operating mechanism of the test switch is locked to prevent misoperation, and the use is safe and reliable.

Below by accompanying drawing and embodiment, the utility model is described in further detail.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic structural view of the utility model installed on the front plate of the explosion-proof switch.

Fig. 3 is a structural schematic diagram of the main circuit isolating switch operating mechanism of the utility model after removing the isolating reversing switch.

Fig. 4 is a schematic structural view of the test switch operating mechanism of the present invention after the test switch is removed.

Fig. 5 is a state diagram of the utility model during a switch test.

Fig. 6 is a state diagram of the utility model when the isolating reversing switch is switched on.

Explanation of reference signs:

1—Door electric interlock shaft; 2—Isolation reversing switch control handle; 3—Second interlock plate;

3-1—the second gap; 3-2—the third gap; 4—the first interlocking plate;

4-1—the first gap; 5—the handle of the test switch; 6—the front plate of the explosion-proof switch;

7—the third shaft sleeve; 8—the locking plate of the explosion-proof switch door cover; 8-1—through hole;

9—isolating reversing switch; 10—second bushing; 11—isolating and reversing switch joystick;

12—test switch; 13—test switch joystick; 14—first shaft sleeve;

15—the second fixed pin; 16—the second joystick cover; 17—the first fixed pin;

18—the first joystick sleeve; 19—the first copper sleeve; 20—the second copper sleeve;

21—groove.

Detailed ways

As shown in Figure 1, Figure 2 and Figure 4, the utility model includes a main circuit isolating switch operating mechanism, a test switch operating mechanism and a locking mechanism installed on the front plate 6 of the explosion-proof switch. The position of the operating mechanism of the isolating switch of the main circuit and the two are mutually locked. The locking mechanism is arranged near the position of the operating mechanism of the isolating switch of the main circuit and is used to block the operating mechanism of the isolating switch of the main circuit. The rear end of the locking mechanism Cooperate with the through hole 8-1 on the explosion-proof switch door cover locking plate 8, the explosion-proof switch door cover locking plate 8 is located at the rear of the locking mechanism, and the explosion-proof switch door cover locking plate 8 is installed on the explosion-proof switch door cover , the test switch manipulation mechanism includes a test switch handle 5, a first joystick cover 18, a first interlock plate 4, a test switch joystick 13 and a test switch 12, and the test switch handle 5 and the first interlock Plates 4 are all fixed on the first joystick cover 18, the test switch handle 5 is located in front of the first interlock plate 4, the rear end of the test switch joystick 13 passes through the explosion-proof switch front plate 6 and the end Connected with the test switch 12, the test switch joystick 13 is fixedly connected with the first joystick cover 18 through the first fixing pin 17, and the test switch joystick 13 is connected with the first joystick cover 18 and the explosion-proof switch front plate 6 For rotational connection, the left part of the first interlocking plate 4 is provided with a first notch 4-1.

As shown in Fig. 1, Fig. 2 and Fig. 3, the operating mechanism of the isolating switch of the main circuit includes the operating handle 2 of the isolating reversing switch, the second joystick cover 16, the second interlocking plate 3, and the operating lever of the isolating reversing switch. 11 and the isolating reversing switch 9, the operating handle 2 of the isolating reversing switch and the second interlocking plate 3 are fixed on the second joystick sleeve 16, and the operating handle 2 of the isolating reversing switch is located in the second interlocking The front of the lock plate 3, the rear end of the isolating reversing switch joystick 11 passes through the explosion-proof switch front plate 6 and the end is connected with the isolating reversing switch 9, and the isolating reversing switch joystick 11 passes through the second fixed pin 15 is fixedly connected with the second joystick cover 16, and the test switch joystick 13 is rotationally connected with the second joystick cover 16 and the explosion-proof switch front plate 6, and the left part of the second interlocking plate 3 has a second Notch 3-1, the right part of the second interlocking plate 3 has a third notch 3-2, the second notch 3-1 is matched with the front end of the locking mechanism, the third notch 3-2 Cooperate with the first interlocking plate 4 , and the first notch 4 - 1 is cooperating with the second interlocking plate 3 .

As shown in Figure 2, a second bushing 10 is pierced and fixed on the front plate 6 of the explosion-proof switch, and a second copper bushing 20 is embedded and fixed in the second bushing 10. It passes through the second copper sleeve 20 and is rotatably connected with the second copper sleeve 20 .

In this embodiment, the connection methods between the operating handle 2 of the isolating reversing switch and the second joystick cover 16 and between the second interlocking plate 3 and the second joystick cover 16 are welding.

As shown in Figure 2, a first bushing 14 is fixed on the front plate 6 of the explosion-proof switch, and a first copper sleeve 19 is embedded and fixed in the first bushing 14, and the operating rod 13 of the test switch passes through The first copper sleeve 19 is rotatably connected with the first copper sleeve 19 .

In this embodiment, the connections between the test switch handle 5 and the first joystick cover 18 and between the first interlocking plate 4 and the first joystick cover 18 are welding.

As shown in Figures 1 and 2, the locking mechanism includes a door electric interlock shaft 1 and a third shaft sleeve 7, and the door electric interlock shaft 1 passes through the third shaft sleeve 7 and is threaded with the third shaft sleeve 7 connection, the third shaft sleeve 7 is fixed on the front plate 6 of the explosion-proof switch, the front end of the door electric interlock shaft 1 is matched with the second notch 3-1, and the rear end of the door electric interlock shaft 1 Cooperate with through hole 8-1.

As shown in FIG. 2 , the front end of the door electric interlock shaft 1 is provided with a groove 21 , which is convenient for screwing the door electric interlock shaft 1 .

The working principle of the utility model is as follows: as shown in Figure 6, when the explosion-proof switch closes the door cover, the explosion-proof switch door cover locking plate 8 moves to the front of the door electric interlocking shaft 1, and the communication on the explosion-proof switch door cover locking plate 8 Hole 8-1 is centered with door electric interlocking shaft 1. Before the explosion-proof switch works, the door electric interlock shaft 1 needs to be rotated so that it is separated from the second notch 3-1 on the left side of the second interlock plate 3. At this time, the rear end of the door electric interlock shaft 1 enters the door cover locking plate of the explosion-proof switch In the through hole 8-1 on 8, the door cover of the explosion-proof switch is locked and cannot be opened, and the operating handle 2 of the isolating reversing switch is turned to make the isolating reversing switch 9 to the on position, that is, when the isolating reversing switch is closed, The main power is turned on. Simultaneously, the right side of the second interlocking plate 3 enters the first gap 4-1 on the left side of the first interlocking plate 4, the first interlocking plate 4 is locked, the test switch handle 5 cannot rotate, and the test switch 12 cannot work.

As shown in Figure 5, when the explosion-proof switch needs to be debugged, turn the test switch handle 5 clockwise, and the left end of the first interlocking plate 4 enters the third gap 3-2 on the right side of the second interlocking plate 3, so that the isolation reversing switch The control handle 2 cannot be rotated. Driven by the first control lever sleeve 18, the test switch control lever 13 fixedly connected with it through the first fixed pin 17 is rotated, so that the test switch 12 is rotated to the closing position, and the test power supply is turned on. . At this time, the explosion-proof switch can be used for breaking and closing tests of contactors or circuit breakers, as well as various functional tests of intelligent controllers. In this case, since the isolating reversing switch 9 is at the zero position, the front end of the contactor or circuit breaker is isolated from the main power supply. During the test, the power supply will not be led to the load end, and there will be no potential safety hazard.

When the explosion-proof switch needs to open the door cover, it is necessary to turn the operating handle 2 of the isolation reversing switch to zero position, rotate the door electric interlock shaft 1 and withdraw from the explosion-proof switch door cover locking plate 8. At this time, the door electric interlock shaft 1 The front end enters in the second gap 3-1 on the left side of the second interlocking plate 3, so that the operating handle 2 of the isolating reversing switch can not be rotated, that is, power can not be transmitted, and safety is guaranteed.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any simple modifications, changes and equivalent structural transformations made to the above embodiments according to the technical essence of the present utility model still belong to Within the scope of protection of the technical solution of the utility model.

Claims (8)

1. a kind of explosion-proof switch interlocking mechanism with test function, it is characterized in that: comprise and be installed on the explosion-proof switch front plate (6) main circuit isolating switch control mechanism, test switch control mechanism and locking mechanism, described test switch control The mechanism is arranged at a position close to the operating mechanism of the main circuit isolating switch and the two are mutually locked. The locking mechanism is arranged at a position close to the operating mechanism of the main circuit isolating switch and is used to block the operating mechanism of the main circuit isolating switch. The rear end of the locking mechanism cooperates with the through hole (8-1) on the explosion-proof switch door cover locking plate (8), and the explosion-proof switch door cover locking plate (8) is positioned at the rear of the locking mechanism, and the explosion-proof switch door The cover locking plate (8) is installed on the explosion-proof switch door cover, and the test switch operating mechanism includes the test switch handle (5), the first joystick cover (18), the first interlocking plate (4), the test switch control Rod (13) and test switch (12), the test switch handle (5) and the first interlock plate (4) are all fixed on the first joystick cover (18), the test switch handle (5 ) is located in front of the first interlocking plate (4), the rear end of the test switch joystick (13) passes through the explosion-proof switch front plate (6) and the end is connected with the test switch (12), and the test switch operates The rod (13) is fixedly connected with the first joystick sleeve (18) through the first fixed pin (17), and the test switch joystick (13) is connected with the first joystick sleeve (18) and the explosion-proof switch front plate (6) are connected in rotation, and the left part of the first interlocking plate (4) has a first notch (4-1). 2. A kind of explosion-proof switch interlocking mechanism with test function according to claim 1, characterized in that: said main circuit isolating switch operating mechanism includes isolating reversing switch operating handle (2), second operating lever cover (16), the second interlocking plate (3), the isolating reversing switch lever (11) and the isolating reversing switch (9), and the isolating reversing switch handle (2) and the second interlocking plate ( 3) are all fixed on the second joystick sleeve (16), the operating handle (2) of the isolating reversing switch is located in front of the second interlocking plate (3), and the operating lever (11) of the isolating reversing switch The rear end passes through the front plate (6) of the explosion-proof switch and the end is connected with the isolating reversing switch (9), and the operating rod (11) of the isolating reversing switch is connected to the second operating rod sleeve through the second fixing pin (15) (16) Fixedly connected, the test switch joystick (13) is all rotationally connected with the second joystick cover (16) and the explosion-proof switch front plate (6), and the left part of the second interlocking plate (3) is opened There is a second notch (3-1), the right part of the second interlocking plate (3) has a third notch (3-2), the second notch (3-1) and the locking mechanism The front end cooperates, the third notch (3-2) cooperates with the first interlocking plate (4), and the first notch (4-1) cooperates with the second interlocking plate (3). 3. The interlocking mechanism of an explosion-proof switch with test function according to claim 2, characterized in that: the front plate (6) of the explosion-proof switch is pierced and fixed with a second bushing (10), and the first A second copper sleeve (20) is embedded and fixed in the two shaft sleeves (10), and the isolation reversing switch operating rod (11) passes through the second copper sleeve (20) and is rotatably connected with the second copper sleeve (20). 4. A kind of explosion-proof switch interlocking mechanism with test function according to claim 2, characterized in that: between the operating handle (2) of the isolating reversing switch and the second operating rod cover (16) and the second The connection mode between the two interlocking plates (3) and the second joystick cover (16) is welding. 5. An interlocking mechanism of an explosion-proof switch with test function according to any one of claims 1-4, characterized in that: the front plate (6) of the explosion-proof switch is pierced and fixed with a first bushing (14), the first bushing (14) is inlaid and fixed with a first copper bushing (19), and the test switch lever (13) passes through the first copper bushing (19) and is connected to the first copper bushing ( 19) Rotate connection. 6. An explosion-proof switch interlocking mechanism with test function according to any one of claims 1-4, characterized in that: the test switch handle (5) is connected to the first joystick cover (18) The connections between them and between the first interlocking plate (4) and the first joystick cover (18) are welding. 7. A kind of explosion-proof switch interlocking mechanism with test function according to claim 2, characterized in that: said locking mechanism comprises a door electric interlock shaft (1) and a third shaft sleeve (7), and said door The electric interlock shaft (1) passes through the third bushing (7) and is threadedly connected with the third bushing (7), and the third bushing (7) is fixed on the front plate (6) of the explosion-proof switch, The front end of the door electric interlock shaft (1) fits into the second notch (3-1), and the rear end of the door electric interlock shaft (1) fits into the through hole (8-1). 8. An explosion-proof switch interlock mechanism with test function according to claim 7, characterized in that: the front end of the door electrical interlock shaft (1) is provided with a groove (21).