JP2002181225A - Operation equipment with function for indicating opening - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make an opening same to an actual opening indicated by conducting rotation at a rotational angle same to that of an output shaft carrier, in a simple structure. SOLUTION: This operation equipment has the output shaft carrier 53 attached to a valve stem, a casing 45 for holding rotatably the output shaft carrier 53 around the axial center of the valve stem, a cover 46 mounted fixedly on the casing 45, an input shaft 50 held rotatably by the cover 46 via an opening indicator 48, and a gear train arranged between the input shaft 50 and the output shaft carrier 53. The indicator 48 comprises a sleeve part 49 for holding the input shaft 50, a support bar 72 protruded along the radial direction of the input shaft 50 from the sleeve part 49, and a connection member 73 for connecting the support bar 72 to the output shaft carrier 53, and cut-out parts 70, 71 for allowing rotation of the connection member 73 are provided in the casing 45.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating device having an opening indicating function, and more particularly to a technique for opening and closing a rotary valve having a valve body which rotates around an axis of a valve rod such as a butterfly valve. It is.

[0002]

2. Description of the Related Art Conventionally, as a valve operating device, for example, FIG.
5 to FIG. 4 and 5,
The operating device 1 includes a casing 2 including a gear train described later.
And a cover 3 disposed on the upper part of the casing 2. The input shaft 5 is rotatably held by the cover 3 via the sleeve 4, and the pointer 6 indicating the opening degree is attached to the upper end of the sleeve 4. On the top surface of the cover 3, there is provided a scale 7 equally divided from a fully closed position to a fully opened position.

The casing 2 comprises an upper part 2a and a lower part 2b, and the upper part 2a and the lower part 2b cover 3 are integrally fastened by bolts 2c. The upper part 2 of the casing 2 forms an internal gear 8 on the inner surface. Lower part 2
b, a small-diameter portion 9a at the lower end of the output shaft carrier 9 disposed inside is rotatably held by a boss 10 at the bottom, and a large-diameter portion 9b at the upper end of the output shaft carrier 9 is formed at the upper end of the boss 10. It is rotatably held by the seating portion 11. The output shaft carrier 9 rotatably holds the lower end of a sun gear 12 placed on the large diameter portion 9b.
2 holds the lower end of the input shaft 5 rotatably.

A sun gear 12 rotatably holds a gear shaft 14 of a first planetary gear 13 disposed at an upper portion. The first planetary gear 13 includes both an input shaft gear 15 provided on an input shaft 5 and an internal gear 8. Mesh with. The output shaft carrier 9 rotatably holds a gear shaft 17 of a second planetary gear 16 disposed at an upper portion, and the second planetary gear 16 includes a sun gear 12 and an internal gear 8.
Meshes with both.

A first measuring gear 18 mounted on the input shaft 5 rotatably holds a gear shaft 14 of the first planetary gear 13. The cover 3 is engaged with the second gear 18
A gear shaft 21 of a third measuring gear 20 that rotates integrally with the measuring gear 19 and the second measuring gear 19 is rotatably held, and the third measuring gear 20 meshes with a fourth measuring gear 22 provided on the sleeve 4. are doing.

The number of teeth of each gear is as follows: input shaft gear 15, first planetary gear 13, internal gear 8, sun gear 1
2, the reduction ratio of the gear train formed between the input shaft 5 and the output shaft carrier 9 by the second planetary gear 16 and the internal gear 8, the input shaft gear 15, the first planetary gear 13, the internal gear 8, the first The measurement gear 18, the second measurement gear 19, the third measurement gear 20, and the fourth measurement gear 22 are set so that the reduction gear ratio of the gear train formed between the input shaft 5 and the sleeve 4 is the same. I have.

With the above-described structure, when the input shaft 5 is rotated, the first planetary gear 13 which rotates by meshing with the input shaft gear 15 revolves around the input shaft 5 by meshing with the internal gear 8. The sun gear 12 rotates along with the revolution of the rear gear 13, and the second planetary gear 16 revolves by meshing with the internal gear 8 by the rotation of the sun gear 12, and the second planetary gear 16 rotates.
The output shaft carrier 9 rotates with the revolution of.

On the other hand, with the revolution of the first planetary gear 13, the first measuring gear 18 rotates, the second measuring gear 19 and the third measuring gear 20 meshing with the first measuring gear 18 rotate, and the third measuring gear 18 rotates. The fourth measuring gear 22 meshing with the gear 20 rotates to rotate the pointer 6 together with the sleeve 4, and the pointer 6 rotates at the same rotation angle as the output shaft carrier 9 to indicate the scale 7 having the same opening as the actual opening. .

[0009]

However, in the above configuration, there is a problem that a complicated gear train is required for the opening degree guide and the structure is complicated.

An object of the present invention is to solve the above-mentioned problem and to provide an operating device with an opening indicating function which can rotate at the same rotation angle as an output shaft carrier and indicate the same opening as an actual opening in a simple structure. The purpose is to provide.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an operating device with an opening degree indicating function according to the present invention comprises an output shaft carrier mounted on a valve stem and an output shaft carrier mounted around the axis of the valve stem. It has a casing that is rotatably held, a cover that is fixedly mounted on the casing, an input shaft that is rotatably held by the cover via an opening indicator, and a gear train that is arranged between the input shaft and the output shaft carrier. The opening indicator comprises a sleeve portion holding the input shaft, a support bar protruding from the sleeve portion in the radial direction of the input shaft, and a connecting member for connecting the support bar to the output shaft carrier. The notch is inserted in the axial direction of the input shaft, and allows the connecting member to rotate around the axis of the input shaft in the notch.

With the above configuration, the rotational force of the input shaft is transmitted to the output shaft carrier via the gear train, and the output shaft carrier rotates at a predetermined reduction ratio with respect to the rotation of the input shaft. With the rotation of the output shaft carrier, the connecting member rotates in the notch, and the support bar and the sleeve rotate at the same rotation angle as the rotation angle of the output shaft carrier, so that the opening degree indicator is connected to the output shaft carrier. The operator indicates the same opening as that of the valve stem.

[0013] Therefore, the structure for indicating the degree of opening only needs to be the opening degree indicator that rotates integrally with the output shaft carrier and the notch provided on the cover, and the degree of opening can be indicated with a simple structure.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1 to FIG.
Is the upper casing 42 and the lower casing 43
4 and a casing 45 fixed thereto.
A cover 46 is fixedly mounted on the upper end of the cover with bolts 47.
The cover 46 rotatably holds the input shaft 50 via the sleeve 49 of the opening degree indicator 48, and has a scale (not shown) on the top surface of the cover 46, which divides the entire range from the fully closed position to the fully open position. Provided.

The upper casing 42 includes a first internal gear 51 and a second internal gear
Is formed. The lower casing 43 rotatably holds the small-diameter portion 54 at the lower end side of the output shaft carrier 53 disposed inside the boss portion 55 at the bottom portion.
Is rotatably held by a seating portion 57 formed at the upper end of the boss portion 55.

The output shaft carrier 53 rotatably holds the eccentric bearing 59 at the large diameter portion 58 and supports an outer gear 61 rotatably fitted to the eccentric portion 60 of the eccentric bearing 59. The outer gear 61 meshes with the second internal gear 52, has a predetermined difference in the number of teeth between the outer gear 61 and the second internal gear 52, and has a plurality of pin holes 62 at equally spaced positions in the circumferential direction. Carrier pins 63 are loosely fitted in the pin holes 62, and the carrier pins 63 are fixed and held by the output shaft carrier 53.

The eccentric bearing 59 has a disk portion 64 at an upper portion, and the lower end of the input shaft 50 is rotatably held by the disk portion 64. The planetary gear 65 meshes with both the sun gear 67 provided on the input shaft 50 and the first internal gear 51. The gear shaft 6 of the planetary gear 65 is provided above the first internal gear 51.
6 is held rotatably around the axis of the input shaft 50.

The first internal gear 51 and the second internal gear 52 are provided with arc-shaped notches 70 and 71, respectively. The opening degree indicator 48 is a sleeve part 4 provided with a pointer 48a.
9, a support bar 72 projecting from the sleeve portion 49 in the radial direction of the input shaft 50, and a connecting member 73 for connecting the support bar 72 to the output shaft carrier 53. The connecting member 73 is composed of the first internal gear 51 and the second internal gear. The support bar 72 and the connecting member 73 are fixed with bolts 74, and the connecting member 73 and the output shaft carrier 53 are fixed with bolts 75.

The operation of the above configuration will be described below. The planetary gear 65 meshing with the sun gear 67 rotates around the axis of the gear shaft 66 by the rotation of the input shaft 50, and revolves around the axis of the input shaft 50 by meshing with the first internal gear 51. The eccentric bearing 59 rotates around the coaxial center with the axis of the input shaft 50 by the revolution of the planetary gear 65, and the rotation of the eccentric bearing 59 causes the outer gear 61 to mesh with the second internal gear 52 to rotate around the eccentric portion 60. While revolving around the axis of the input shaft 50. As the outer gear 61 revolves, the output shaft carrier 53 rotates via the carrier pin 63.

With the rotation of the output shaft carrier 53, the connecting member 73 rotates in the notches 70, 71, the support bar 72 and the sleeve portion 49 rotate integrally with the output shaft carrier 53, and the opening degree indicator 48 Rotates at the same rotation angle as the rotation angle of the output shaft carrier 53 and indicates the same opening degree as the opening degree of the valve stem connected to the output shaft carrier 53 to the operator with the pointer 48a.

[0021]

As described above, according to the present invention, the opening degree indicator integrally rotates with the rotation of the output shaft carrier, and the support bar thereof has the same rotation angle as the rotation angle of the output shaft carrier. Since the same opening as the valve stem that rotates and is connected to the output shaft carrier is indicated to the operator through the notch, the structure for indicating the opening is an opening indicator and casing that rotate integrally with the output shaft carrier. Only the notch provided in the opening can be indicated by a simple structure.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an operating device according to an embodiment of the present invention.

FIG. 2 is a sectional view of a main part of the operating device.

FIG. 3 is an exploded perspective view of the operating device.

FIG. 4 is a sectional view showing a conventional operating device.

FIG. 5 is a plan view of the operating device.

[Explanation of symbols]

 41 Operating Machine 42 Upper Casing 43 Lower Casing 44 Bolt 45 Casing 46 Cover 47 Bolt 48 Opening Indicator 48a Pointer 49 Sleeve 50 Input Shaft 51 First Internal Gear 52 Second Internal Gear 53 Output Shaft Carrier 54 Small Diameter 55 Boss 56 Medium diameter part 57 Seating part 58 Large diameter part 59 Eccentric bearing 60 Eccentric part 61 Outer gear 62 Pin hole 63 Carrier pin 64 Disk part 65 Planetary gear 66 Gear shaft 67 Sun gear 68 Plate 70, 71 Notch 72 Support bar 73 Connecting member 74 volts 75 volts

Claims (1)

[Claims] 1. An output shaft carrier mounted on a valve stem, a casing for rotatably holding the output shaft carrier around the axis of the valve stem, a cover fixedly mounted on the casing, and a cover via an opening indicator. Having an input shaft rotatably held at, and a gear train arranged between the input shaft and the output shaft carrier,
The opening indicator comprises a sleeve portion holding the input shaft, a support bar projecting radially from the sleeve portion of the input shaft from the sleeve portion, and a connecting member connecting the support bar to the output shaft carrier. An operating device with an opening degree indicating function, comprising: a notch portion inserted in the center direction, wherein the notch portion allows the connecting member to rotate around the axis of the input shaft.