TWM504884U - Gear operator - Google Patents

Description

Gear operator

This creation is about a gear operator, especially one that allows the worm shaft to be securely coupled to the gearbox to prevent the worm shaft from loosening or losing.

In industrial applications, the rotation of the gear operator is generally used to control the opening, closing and throttling of various valves, balancing, and fluid control and adjustment of the piping system. The gear operator mainly comprises a hand wheel and a gear box, wherein the hand wheel shaft is fixedly fixed to one end of a worm shaft, the other end of the worm shaft passes through a worm in the gear box, and the worm and the worm shaft are fixed by a radial direction The pins are coupled together, the worm is re-engaged with a worm gear to form a speed reduction mechanism, and the speed reduction mechanism is coupled to the valve shaft to drive the valve flap. Thereby, the lever rotation principle of the hand wheel can be used to enable the operator to open or close the flap in a rotating manner, and the operator is provided with an indicator to identify the flap opening position, and the flap control of 0° to 90° is given.

However, when the operator turns the hand wheel to control the opening or closing of the valve flap, the fixing pin needs to bear the torsional shearing force generated by the rotation of the worm, and the function of connecting the worm and the worm shaft at the same time is required, so that the fixing pin is more Easy to break loose. When the fixing pin is broken, not only the worm shaft and the hand wheel fall, but also the operator may be accidentally injured, and the personnel can not operate the valve with the gear box, resulting in abnormal control of the plant area.

In view of this, in order to provide a structure that is different from the conventional technology, and improve The shortcomings described by the creator have accumulated many years of experience and continuous research and development improvements.

One of the purposes of this creation is to provide a gear operator that is worn by a stop In the annular chute of the worm shaft, the structure that connects the worm shaft and the gear box can solve the problem that the conventional fixing pin is easy to be broken, and the reliability and safety of the product can be improved.

For the purpose of the above creation, the gear operator system of this creation includes one hand. a wheel and a gear box, wherein the hand wheel is fixed to one end of a worm shaft, the other end of the worm shaft passes through a worm in the gear box, the worm is connected to a worm wheel, and the worm wheel is connected to a valve shaft to drive when the hand wheel is rotated The valve shaft rotates. The main technical feature is that the other end of the worm shaft is provided with an annular sliding groove, the gear box is provided with a positioning hole for the shaft to be connected to the worm shaft, and the gear box is provided with a stopping member, and the stopping member penetrates the ring shape. Inside the chute to position the worm shaft.

In implementation, the worm shaft includes a first diameter portion and a second diameter portion, and the first diameter portion The hand wheel is coupled, and the annular chute is formed on the outer periphery of the second diameter portion.

In implementation, one end of the first diameter portion is provided with a first limiting portion, and the worm is provided There is a second limiting portion corresponding to the first limiting portion.

In implementation, the first limiting portion is formed on a periphery of the first diameter portion, including one a first outer plane and a second outer plane, wherein the first outer plane and the second outer plane are parallel to the axis of the first diameter portion, and the second limiting portion is formed on the inner circumference of the worm, including a first inner plane And a second inner plane, the first inner plane and the second inner plane are parallel and symmetric to the axis of the worm.

In implementation, the stop member is a fixed pin, and the gear box is provided with a pin hole for fixing The pin passes through the pin hole and allows one end of the fixing pin to penetrate into the annular chute.

In order to facilitate a deeper understanding of this creation, it is detailed later:

1‧‧‧Gear manipulator

2‧‧‧Handwheel

3‧‧‧ Gearbox

4‧‧‧ Lower case

41‧‧‧First accommodation space

42‧‧‧Second accommodation space

43‧‧‧Positioning holes

44‧‧ ‧ pinhole

5‧‧‧Upper casing

6‧‧‧ worm

61‧‧‧Second Limitation

62‧‧‧First inner plane

63‧‧‧Second inner plane

7‧‧‧ worm shaft

71‧‧‧First Path

711‧‧‧First Limitation Department

712‧‧‧ first outer plane

713‧‧‧ second outer plane

72‧‧‧Second Trail

73‧‧‧Chute

8‧‧‧stops

9‧‧‧ valve shaft

90‧‧‧ worm gear

Figure 1 is an exploded view of the preferred embodiment of the present invention.

Figure 2 is a perspective view of the preferred embodiment of the present invention attached to the valve shaft.

Figure 3 is a combined cross-sectional view of a preferred embodiment of the present invention.

Referring to Figures 1 to 3, which is a preferred embodiment of the inventive gear operator 1, for use on a valve such as a butterfly valve, the valve mainly includes a valve body having a valve on the valve body The shaft 9, the valve shaft 9 is connected to a valve flap, and the gear operator 1 comprises a hand wheel 2 and a gear box 3, and the gear wheel 3 is rotated to rotate the gear box 3 to open, partially open or close the valve. The flap controls and regulates the fluid in the piping system. The gearbox 3 includes a lower housing 4, an upper housing 5, a worm 6, a worm shaft 7, and a stop member 8.

The lower casing 4 has a first accommodating space 41 and a second accommodating space 42 in which the top surface is formed with an opening; the upper casing 5 is closed above the lower casing 4 to close the first accommodating space 41 and the second accommodating space 42. The top end of the valve shaft 9 is protruded upward from the bottom surface of the first accommodating space 41 of the lower casing 4, and is coaxially connected to a worm wheel 90, and is positioned in the first accommodating space 41. One side of the lower casing 4 is provided with a circular positioning hole 43 and a pin hole 44. The circular positioning hole 43 extends transversely through the second receiving space 42 to be formed on the lower casing 4, and the pin hole 44 communicates with the lower casing. One end of 4 and one end of circular positioning hole 43.

The worm 6 is accommodated in the second accommodating space 42. The worm 6 is meshed with the worm wheel 90. The worm 6 has a coaxial shaft hole therein. The inner periphery of the worm 6 forms a second limiting portion 61. The second limiting portion is formed. The 61 includes a first inner plane 62 and a second inner plane 63. The first inner plane 62 and the second inner plane 63 are parallel to the axis of the worm 6.

The worm shaft 7 includes a first diameter portion 71 and a second diameter portion 72 that are coaxial, and the first diameter portion 71 One end is connected to the hand wheel 2, and the other end of the other end of the first diameter portion 71 is formed with a first limiting portion 711. The first limiting portion 711 includes a first outer surface 712 and a second outer surface 713. The plane 712 and the second outer plane 713 are parallel symmetrical with respect to the axis of the first diameter portion 71, and the thickness between the first outer plane 712 and the second outer plane 713 is slightly smaller than the first inner plane 62 and the second inner plane of the worm 6. Between 63 widths. When the worm shaft 7 is axially connected to the positioning hole 43 of the lower casing 4 of the gear box 3 and the first diameter portion 71 is passed through the shaft hole of the worm 6, the corresponding first outer plane 712 and the first inner plane 62 are provided. And the corresponding second outer plane 713 and the second inner plane 63, the worm shaft 7 and the worm 6 are axially coupled to each other and synchronously rotated.

In addition, an outer annular edge of the second diameter portion 72 of the worm shaft 7 is provided with an annular sliding groove 73. A fixing pin passes through the pin hole 44 of the lower casing 4 from above to below, and one end of the fixing pin penetrates and is positioned in the annular sliding groove 73, and the fixing pin serves as the stopper 8. Thereby, when the hand wheel 2 is rotated, the fixing pin can only bear a single pulling force, and when the tension is applied, the force is transmitted to the gear box 3, and the gear box 3 receives the pulling force to ensure that the fixing pin does not cause When the worm shaft 7 rotates to drive the worm 6, it is twisted.

Therefore, this creation has the following advantages:

1. After the worm shaft and the worm are axially connected, the traverse member is inserted into the annular sliding groove of the worm shaft by a stopper. When the hand wheel is rotated, the fixing pin only receives a single axial pulling force. The tension is transmitted to the gearbox and absorbed by the gearbox, thus ensuring that the fixing pin does not break and the worm shaft can be firmly attached to the gearbox without detachment.

2. The creation system makes the worm shaft and the worm axially connected by the corresponding first limit portion and the second limit portion. Therefore, the worm shaft and the worm can be ensured to rotate synchronously, and the worm shaft can be rotated. At the time, the torsional shear force generated between the worm and the worm can solve the problem that the conventional fixing pin is easily broken, and the reliability and safety of the product can be improved.

In summary, according to the content disclosed above, this creation can indeed achieve the desired purpose. Providing a new type of patent that not only enables the worm shaft to form an effective connection with the worm, but also enables the worm shaft to be firmly coupled to the gear box to ensure safe use of the gear operator, which is of great industrial value. Application.

1‧‧‧Gear manipulator

3‧‧‧ Gearbox

4‧‧‧ Lower case

41‧‧‧First accommodation space

42‧‧‧Second accommodation space

43‧‧‧Positioning holes

44‧‧ ‧ pinhole

5‧‧‧Upper casing

6‧‧‧ worm

7‧‧‧ worm shaft

71‧‧‧First Path

711‧‧‧First Limitation Department

712‧‧‧ first outer plane

72‧‧‧Second Trail

73‧‧‧Chute

8‧‧‧stops

9‧‧‧ valve shaft

90‧‧‧ worm gear

Claims (5)

A gear operator includes a hand wheel and a gear box fixed to one end of a worm shaft, the other end of which passes through a worm in the gear box, the worm is connected to a worm wheel, and the worm wheel is connected to the worm wheel a valve shaft for driving the valve shaft to rotate, the improvement is that: the other end of the worm shaft is provided with an annular sliding groove; the gear box is provided with a positioning hole for axially connecting the worm shaft; The gearbox is provided with a stop member that penetrates into the annular chute for positioning the worm shaft. The gear operator of claim 1, wherein the worm shaft includes a first diameter portion and a second diameter portion, wherein the first diameter portion connects the hand wheel, and the annular sliding groove is formed in the The outer circumference of the second diameter portion. The gear operator of claim 2, wherein one end of the first diameter portion is provided with a first limiting portion, and the worm has a second limit corresponding to the first limiting portion. Position. The gear operator of claim 3, wherein the first limiting portion is formed on a periphery of the first diameter portion, and includes a first outer plane and a second outer plane, the first outer The plane and the second outer plane are parallel to the axis of the first diameter portion, and the second limiting portion is formed on the inner circumference of the worm, and includes a first inner plane and a second inner plane, the first The inner plane and the second inner plane are parallel symmetrical to the axis of the worm. The gear operator of claim 1, 2, 3 or 4, wherein the stopper is a fixing pin, and the gear box is provided with a pin hole, the fixing pin passes through the pin hole, One end of the fixing pin is inserted into the annular sliding groove.