阅读说明：本技术 隔离换向开关门电联锁机构 (electric interlocking mechanism for isolating reversing switch door ) 是由 鱼永平 何继刚 万海 于 2019-09-22 设计创作，主要内容包括：本发明涉及一种隔离换向开关门电联锁机构,其特征在于：联锁杆通过联锁杆座设在主箱的顶板上,联锁杆右端槽内设有联锁杆轮；联锁杆下方右端垂直设置推杆,推杆上端的斜面与联锁杆轮相接触,推杆下端设有推杆轮；挡杆通过挡杆座设在主箱的顶板上,顶杆安装在门盖内侧,顶杆左端与挡杆右端水平靠齐,联锁杆端头垂直插入顶杆右端的方孔；主箱内设有隔离换向开关,隔离换向开关上的方轴与操纵机构连接。隔离换向开关门电闭锁机构与隔离换向开关操作机构分开布置,完全避免了误操作；实现隔离换向开关与隔爆外壳之间可靠的机械联锁,有安全、可靠、操作方便等特点。(The invention relates to an electric interlocking mechanism for an isolating reversing switch door, which is characterized in that: the interlocking rod is arranged on the top plate of the main box through an interlocking rod seat, and an interlocking rod wheel is arranged in a groove at the right end of the interlocking rod; a push rod is vertically arranged at the right end below the interlocking rod, an inclined plane at the upper end of the push rod is contacted with an interlocking rod wheel, and a push rod wheel is arranged at the lower end of the push rod; the stop lever is arranged on the top plate of the main box through the stop lever seat, the ejector rod is arranged on the inner side of the door cover, the left end of the ejector rod is horizontally aligned with the right end of the stop lever, and the end head of the interlocking lever is vertically inserted into a square hole at the right end of the ejector rod; an isolation reversing switch is arranged in the main box, and a square shaft on the isolation reversing switch is connected with the operating mechanism. The electric locking mechanism of the isolating reversing switch door and the isolating reversing switch operating mechanism are separately arranged, so that misoperation is completely avoided; the reliable mechanical interlocking between the isolating reversing switch and the explosion-proof shell is realized, and the device has the characteristics of safety, reliability, convenience in operation and the like.)

1. The utility model provides an electric interlocking device of isolation reversing switch door, installs in explosion-proof type electromagnetic starter, and electromagnetic starter includes junction box (1), door closure (2), main tank (3) and operating device (5), its characterized in that: the interlocking rod (9) is arranged on the top plate of the main box (3) through an interlocking rod seat (10), and an interlocking rod wheel (11) is arranged in a groove at the right end of the interlocking rod (9); a push rod (14) is vertically arranged at the right end below the interlocking rod (9), the push rod (14) is arranged on the inner side of the front plate (4) of the main box through a push rod seat (13), an inclined plane at the upper end of the push rod (14) is contacted with an interlocking rod wheel (11), and a push rod wheel (15) is arranged at the lower end of the push rod (14); the stop lever (6) is arranged on the top plate of the main box (3) through the stop lever seat (7), the ejector rod (17) is arranged on the inner side of the door cover (2), the left end of the ejector rod (17) is horizontally aligned with the right end of the stop lever (6), and the end of the interlocking rod (9) is vertically inserted into a square hole at the right end of the ejector rod (17); an isolation reversing switch (19) is arranged in the main box (3), and a square shaft (20) on the isolation reversing switch (19) is connected with the operating mechanism (5).

2. the electric interlock mechanism for isolating and reversing switch door according to claim 1, characterized in that said operating mechanism (5) is: the operating shaft (21) penetrates into the main box (3) through an operating rod seat (23) arranged on a front plate (4) of the main box, and the inner end of the operating shaft (21) is connected with a cam (22) and the outer end is connected with a handle (24).

3. The electrical interlock mechanism for an isolating reversing switch door of claim 1, further comprising: the push rod (14) is sleeved with a spring III (16), the upper end of the spring III (16) is connected with a push rod seat (13), the lower end of the spring III (16) is connected with a baffle, clamping plates (18) are arranged on two sides of the bottom end of the push rod (14), and the bottom end of each clamping plate (18) clamps a push rod wheel (15), so that the push rod wheel (15) is in contact with a cam (22).

4. the electrical interlock mechanism for an isolating reversing switch door of claim 1, further comprising: a spring I (8) is sleeved on the stop lever (6), and a spring II (12) is sleeved on the interlocking lever (9).

Technical Field

The invention belongs to an underground explosion-proof electric appliance of a coal mine, and particularly relates to an electric interlocking mechanism of an isolating reversing switch door of an explosion-proof vacuum electromagnetic starter for the underground coal mine.

background

a large number of mining explosion-proof vacuum electromagnetic starters are used underground in a coal mine and are used for controlling the electrification, the outage and the operation of electrical equipment. An isolation reversing switch is installed inside the mining explosion-proof vacuum electromagnetic starter, and the underground coal mine is required to be completed by disconnecting a power supply by operating the isolation switch under the condition that a vacuum contactor inside the mining explosion-proof vacuum electromagnetic starter cannot be disconnected when an emergency fault occurs in the operation of electrical equipment or when a door cover is opened in power failure maintenance. The standard requirements of the coal industry are as follows: reliable mechanical interlocking is required to be arranged between the isolating reversing switch and the flameproof shell, so that the main cavity can be opened only when the isolating reversing switch is in a disconnection position (power failure state); when the main chamber is opened, the isolating reversing switch cannot be closed in a normal operation method. At present, the mechanism adopts a screw mechanism or a pin shaft mechanism to realize functions, and a locking mechanism and an isolating reversing switch operating mechanism are positioned at the same position, so that manual misoperation can also supply power, reliable locking cannot be realized, and potential safety hazards exist.

Disclosure of Invention

It is an object of the present invention to obviate the above-mentioned disadvantages and drawbacks of the prior art and to provide a safe, reliable and operational electric locking mechanism for an isolating and reversing switch door.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides an electric interlocking device of isolation reversing switch door, installs in explosion-proof type electromagnetic starter, and electromagnetic starter includes junction box, door closure, main tank and operating device, its characterized in that: the interlocking rod is arranged on the top plate of the main box through an interlocking rod seat, and an interlocking rod wheel is arranged in a groove at the right end of the interlocking rod;

A push rod is vertically arranged at the right end below the interlocking rod, the push rod is arranged on the inner side of the front plate of the main box through a push rod seat, an inclined plane at the upper end of the push rod is contacted with an interlocking rod wheel, and a push rod wheel is arranged at the lower end of the push rod;

The stop lever is arranged on the top plate of the main box through the stop lever seat, the ejector rod is arranged on the inner side of the door cover, the left end of the ejector rod is horizontally aligned with the right end of the stop lever, and the end of the interlocking lever is vertically inserted into a square hole at the right end of the ejector rod (the electromagnetic starter is inserted when in live operation, the door cover is locked, and the door is electrically interlocked);

an isolation reversing switch is arranged in the main box, and a square shaft on the isolation reversing switch is connected with the operating mechanism.

The control mechanism is as follows: the control shaft penetrates into the main box through a control rod seat arranged on a front plate of the main box, the inner end of the control shaft is connected with the cam, and the outer end of the control shaft is connected with the handle.

The push rod is sleeved with a spring III, the upper end of the spring III is connected with the push rod seat, the lower end of the spring III is connected with a baffle, clamping plates are arranged on two sides of the bottom end of the push rod, and the bottom end of each clamping plate clamps the push rod wheel, so that the push rod wheel is in contact with the cam.

The stop lever is sleeved with a spring I, and the interlocking lever is sleeved with a spring II.

the principle is as follows: after the door cover is closed, the push rod pushes the stop lever into the main box, and the compression spring I stores energy; the operating shaft rotates to a switching-on power transmission position of the isolating reversing switch, a cam connected with the operating shaft rotates to push the push rod mechanism to move upwards for a certain distance, the interlocking rod is horizontally moved to a locking hole leftwards, and the door is locked; when the door cover needs to be opened, the control shaft rotates to the power failure position of the isolation reversing switch, the push rod mechanism moves downwards for a certain distance, the interlocking rod moves horizontally to the right under the action of the spring II, and the left end of the interlocking rod moves out of the square hole of the ejector rod; when the door cover is opened, the stop lever is popped up under the action of the spring I to stop the interlocking lever from moving leftwards until the push rod mechanism cannot move upwards, and at the moment, the operating lever mechanism cannot carry out power transmission operation. (the push rod mechanism consists of a push rod seat, a push rod wheel and a spring III.)

the invention has the beneficial effects that:

The electric locking mechanism of the isolating reversing switch door and the isolating reversing switch operating mechanism are separately arranged, so that misoperation is completely avoided; reliable mechanical interlocking between the isolating reversing switch and the flameproof shell is realized, and the main cavity can be opened only when the isolating reversing switch is in a disconnected position; when the main chamber is opened, the isolating reversing switch cannot be closed in a normal operation method. Has the characteristics of safety, reliability, convenient operation and the like. The mechanism is arranged in the explosion-proof shell, so that the damage to the mechanism caused by the severe underground working conditions of the coal mine is prevented.

Drawings

FIG. 1 is a front view of the flameproof housing of the present invention;

FIG. 2 is a top view of the flameproof housing of the present invention;

FIG. 3 is a sectional view taken along line A of FIG. 1;

FIG. 4 is a sectional view taken along line B of FIG. 2;

FIG. 5 is a partial sectional view taken along line C of FIG. 1;

FIG. 6 is a front view of the explosion-proof door cover when the isolating and reversing switch is not powered;

FIG. 7 is a side view of the isolation reversing switch in a state of no power supply after the explosion-proof door cover is closed.

the device comprises a connection box 1, a door cover 2, a main box 3, a main box 4, a front plate of the main box 5, an operating mechanism 6, a stop lever 7, a stop lever seat 8, a spring I, a spring 9, an interlocking lever 10, an interlocking lever seat 11, an interlocking lever wheel 12, a spring II, a push lever seat 13, a push lever 14, a push lever 15, a push lever wheel 16, a spring III, a push lever 17, a clamping plate 18, an isolating reversing switch 19, a square shaft 20, an operating shaft 21, a cam 22, an operating lever seat 23 and a handle 24.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.