CN2268855Y

CN2268855Y - Mechanical drive of gas protection valve

Info

Publication number: CN2268855Y
Application number: CN 96230499
Authority: CN
Inventors: 黎勇生
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-08-15
Filing date: 1996-08-15
Publication date: 1997-11-26
Anticipated expiration: 2006-08-15

Abstract

The utility model relates to a mechanical drive device for a gas protection switch. The utility model is characterized in that a drive gear (7) is arranged on an electromotor shaft (6) of an electromotor (4); a driven gear (10) which is engaged with the drive gear (7) is arranged on a drive shaft (14); the end part of the drive shaft (14) is provided with a handle which is used for driving a gas switch (18) to rotate. The utility model can generate a larger torsional moment, so that a main valve of gas can be controlled simply and reliably, and an original gas pipeline is not required to be changed as installing.

Description

The mechanical actuation device of coal gas protection switch

Protective device when the utility model relates to a kind of gas leakage.

In the prior art, report to the police automatically when leaking and the device of closing gas communication in the pipeline has report repeatly about liquefied gas and piped gas.Modal electric-controlled mechanical torsion switch is a mechanical rotation apparatus, and it receives the signal of telecommunication, just makes the torsion switch motion, relies on the spring torsion that presets, and reverses the gas pipeline main valve, and it is closed.Because the pipeline main valve is general long-term motionless, thus twisting it need very big power, in order to twist the pipeline main valve, usually need to carry out what power amplification with several springs, make structure very complicated.

The purpose of this utility model is to provide a kind of mechanical actuation device that can produce the coal gas protection switch of big torsion.

The technical solution of the utility model is: driving gear is arranged on the motor shaft of motor, and the driven gear that is meshed with driving gear is arranged on the power transmission shaft, and the end of power transmission shaft is provided with and is used to drive the handle that jet rotates.

The utility model compared with prior art has following advantage:

(1). motor can adopt the reduction gearing syncmotor, and through gear reduction, the rotating speed of motor shaft can reach 1 rev/min, and the rotating torque that is delivered to power transmission shaft can reach more than 10 kilograms per centimeter, and this moment is enough to control crank and closes the coal gas main valve.

(2). do not need original gas piping or kitchen range are changed, the utility model can directly be contained on original pipeline.

The utility model will be further described below in conjunction with drawings and Examples:

Accompanying drawing 1 is a structural front view of the present utility model;

Accompanying drawing 2 is the A-A direction cutaway view of accompanying drawing 1; Wherein:

[1]. gas piping; [2]. shell; [3]. base plate; [4]. motor; [5]. column; [6]. motor shaft; [7]. driving gear; [8]. top board; [9]. travel switch; [10]. driven gear; [11]. knob; [12]. positive stop; [13]. spring; [14]. power transmission shaft; [15]. support; [16]. the opening handle; [17]. opening; [18]. the coal gas valve handle; [19]. the jet valve body; [20]. connector assembly; [21]. shifting block.

Embodiment: referring to accompanying drawing 1, driving gear of the present utility model [7] is arranged on the motor shaft [6] of motor [4], the driven gear [10] that is meshed with driving gear [7] is arranged on the power transmission shaft [14], the end of power transmission shaft [14] is provided with and is used to drive the handle that jet [18] rotates, described handle is the opening handle [16] of lower ending opening, and the open card of this opening handle [16] is on the coal gas valve handle [18] of coal gas main valve.After receiving the signal of telecommunication, motor [4] drives driving gear [7] and rotates, and can drive power transmission shaft [14] by driven gear [10] and rotate, and drives opening handle [16] and turns the coal gas main valve.The upper end of described power transmission shaft [14] is provided with knob [11], be with compression spring [13] on the axle of power transmission shaft [14], knob [11] is used for manually control, depress knob [11] earlier, make driving gear [7] and driven gear [10] break away from engagement, turn knob [11] again, driving power transmission shaft [14] rotates, can be in the position of opening by manual coal gas main valve, compression spring [13] is used for after vertical work finishes power transmission shaft [14] being resetted, and driving gear [7] and driven gear [10] mesh again.The sidepiece of described power transmission shaft [14] is provided with positive stop [12], the sidepiece of power transmission shaft [14] also is provided with the travel switch [9] that is used to control motor [4] power supply, be fixed with the shifting block [21] that radially extends on the power transmission shaft [14], this shifting block [21] is positioned between travel switch [9] and the positive stop [12].Line between one side of the contacted shifting block [21] of described positive stop [12] and power transmission shaft [14] axle center is 90 degree ± 10 degree with a side and the angle between the line between power transmission shaft [14] axle center of the contacted shifting block [21] of stroke switch [9].When manual knob [11], power transmission shaft [14] rotates, shifting block [21] rotates thereupon, and positive stop [12] is owing to be fixed on the top board [8], so when shifting block turns to certain angle (generally being the main valve full-gear), shifting block [21] contacts with positive stop [12], can limit being rotated further of power transmission shaft [14].When the coal gas main valve is closed in motor [4] driving power transmission shaft [14] rotation, turn to certain angle shifting block [21] and touch travel switch [9], make motor [4] outage stall.The position of travel switch [9] just in time is the position that the coal gas main valve cuts out, and the position of positive stop [12] just in time is the position of coal gas main valve standard-sized sheet.The top of motor [4] is provided with top board [8], and the bottom of motor [4] is provided with base plate [3], is connected and fixed with four root posts [5] between top board [8] and the base plate [3]; The bottom of base plate [3] is connected with support [15], this support [15] be erected at gas piping [1] go up and be attached thereto connect fixing; The outside of top board [8], base plate [3] is provided with shell [2].Power transmission shaft [14] passes top board [8] and base plate [3], and knob [11] is positioned at the top of top board [8], and handle is positioned at the below of base plate [3], and an end of compression spring [13] is connected with base plate [3], and the other end is connected with driven gear [10].

Claims

1. the mechanical actuation device of a coal gas protection switch; it is characterized in that: driving gear [7] is arranged on the motor shaft [6] of motor [4]; the driven gear [10] that is meshed with driving gear [7] is arranged on the power transmission shaft [14], and the end of power transmission shaft [14] is provided with and is used to drive the handle that jet [18] rotates.

2. the mechanical actuation device of coal gas protection switch according to claim 1 is characterized in that: the upper end of described power transmission shaft [14] is provided with knob [11], is with compression spring [13] on the axle of power transmission shaft [14].

3. the mechanical actuation device of coal gas protection switch according to claim 1; it is characterized in that: the sidepiece of described power transmission shaft [14] is provided with positive stop [12]; the sidepiece of power transmission shaft [14] also is provided with the travel switch [9] that is used to control motor [4] power supply; be fixed with the shifting block [21] that radially extends on the power transmission shaft [14], this shifting block [21] is positioned between travel switch [9] and the positive stop [12].

4. the mechanical actuation device of coal gas protection switch according to claim 3 is characterized in that: the line between a side of the contacted shifting block [21] of described positive stop [12] and power transmission shaft [14] axle center is 90 degree ± 10 degree with a side and the angle between the line between power transmission shaft [14] axle center of the contacted shifting block [21] of stroke switch [9].

5. the mechanical actuation device of coal gas protection switch according to claim 1 is characterized in that: the top of motor [4] is provided with top board [8], and the bottom of motor [4] is provided with base plate [3], is connected and fixed with many root posts [5] between top board [8] and the base plate [3]; The bottom of base plate [3] is connected with support [15], and this support [15] is used for being connected with gas piping [1]; The outside of top board [8], base plate [3] is provided with shell [2].

6. according to the mechanical actuation device of claim 1 or 2 or 5 described coal gas protection switches; it is characterized in that: power transmission shaft [14] passes top board [8] and base plate [3]; knob [11] is positioned at the top of top board [8]; handle is positioned at the below of base plate [3]; one end of compression spring [13] is connected with base plate [3], and the other end is connected with driven gear [10].

7. the mechanical actuation device of coal gas protection switch according to claim 1 is characterized in that: described handle is the opening handle [16] of lower ending opening.