CN218118796U

CN218118796U - Hand wheel adjusting mechanism of pneumatic actuator

Info

Publication number: CN218118796U
Application number: CN202222040771.6U
Authority: CN
Inventors: 朱振华
Original assignee: Wuxi Xinming Automatic Control Valve Co ltd
Current assignee: Wuxi Xinming Automatic Control Valve Co ltd
Priority date: 2022-08-04
Filing date: 2022-08-04
Publication date: 2022-12-23
Anticipated expiration: 2032-08-04

Abstract

The utility model discloses a pneumatic actuator's hand wheel adjustment mechanism, the power distribution box comprises a box body, swing joint has input shaft and output shaft in the box, the outside of input shaft stretches out the box and is connected with the hand wheel, the middle part of input shaft is provided with first gear, the output shaft is located the below of input shaft and is perpendicular setting with the input shaft, have the second gear with first gear engagement on the output shaft, first locating hole has been seted up to the lower extreme of output shaft, the below of box is connected with fixed cover, fixed sheatheeing in has the second locating hole, fixed cover cooperation cover is established on pneumatic actuator's casing, makes second locating hole cup joint with pneumatic actuator's casing upper end, first locating hole is connected with the upper end of gear shaft. In this way, the utility model discloses pneumatic actuator's hand wheel adjustment mechanism can control pneumatic actuator through hand wheel adjustment mechanism, optimizes the power transmission structure, and operation laborsaving, safe and reliable.

Description

Hand wheel adjusting mechanism of pneumatic actuator

Technical Field

The utility model relates to a pneumatic actuator field especially relates to a pneumatic actuator's hand wheel adjustment mechanism.

Background

The pneumatic actuator is a control executing mechanism for opening and closing a valve, and generally comprises a cylinder body, left and right end covers at two ends of the cylinder body, and left and right pistons and a gear shaft arranged in the cylinder body, wherein the left and right pistons are linked with the gear shaft through a connected rack, and when the left and right pistons slide to enable the rack linked gear shaft to rotate forwards and backwards, the valve correspondingly performs opening or closing actions.

Some existing pneumatic actuators are provided with hand wheels, and the hand wheels mainly play a role in emergency control under the condition that the pneumatic actuators suddenly lose air sources. At present, a hand wheel of a conventional small-specification executing mechanism is generally positioned on the same axis with a gear shaft, and the hand wheel directly drives the gear shaft to move, so that the switching operation of equipment is driven.

Disclosure of Invention

The utility model discloses the main technical problem who solves provides a pneumatic actuator's hand wheel adjustment mechanism, can control pneumatic actuator through hand wheel adjustment mechanism, optimizes the power transmission structure, operates laborsaving, safe and reliable.

In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a hand wheel adjustment mechanism of pneumatic actuator, the power distribution box comprises a box body, swing joint has input shaft and output shaft in the box, the box is stretched out and the hand wheel is connected with in the outside of input shaft, the middle part of input shaft is provided with first gear, the output shaft is located the below of input shaft and is perpendicular setting with the input shaft, have the second gear with first gear engagement on the output shaft, first locating hole has been seted up to the lower extreme of output shaft, the below of box is connected with fixed cover, the second locating hole has on the fixed cover, fixed cover cooperation cover is established on pneumatic actuator's casing, makes second locating hole and pneumatic actuator's casing upper end cup joint, first locating hole is connected with the upper end of gear shaft.

In a preferred embodiment of the present invention, the upper end of the gear shaft is fixedly provided with a connecting sleeve, the connecting sleeve is provided with a positioning key, and the lower end of the output shaft is provided with a positioning groove corresponding to the positioning key.

In a preferred embodiment of the present invention, the number of the positioning grooves is 3, and the positioning grooves are arranged in a vertical direction.

In a preferred embodiment of the present invention, the fixing sleeve is screwed with a plurality of locking bolts on the periphery thereof, the housing of the pneumatic actuator has a threaded hole, and the locking bolts are screwed into the threaded hole to connect the fixing sleeve with the housing.

In a preferred embodiment of the present invention, the input shaft is disposed along a horizontal direction, the output shaft is disposed vertically, and the input shaft and the output shaft are rotatably connected in the box body through bearings.

In a preferred embodiment of the present invention, the first gear is connected to the middle of the input shaft, and the left side surface of the first gear is a circumferential gear surface.

In a preferred embodiment of the present invention, the transmission teeth of the second gear are integrally formed at the upper end of the output shaft.

In a preferred embodiment of the present invention, the gear surface of the first gear is perpendicular to the transmission gear of the second gear.

The utility model has the advantages that: the utility model discloses pneumatic actuator's hand wheel adjustment mechanism sets up and transmission power between input shaft and the output shaft perpendicularly, has avoided input shaft and gear shaft to be located same axis, and convenient operation more easily drives gear shaft and rotates.

The utility model discloses pneumatic actuator's hand wheel adjustment mechanism, through the perpendicular meshing of the epaxial first gear of input and the epaxial second gear of output, form right angle engagement structure, have the ascending assembly degree of freedom of axial between the gear face of first gear and the driving gear of second gear, and insensitive to the assembly error, also have higher contact ratio.

The utility model discloses pneumatic actuator's hand wheel adjustment mechanism, the output shaft pass through the constant head tank realize with the cooperation of gear shaft, through box and casing cooperation, realize fixedly through locking bolt, simplified hand wheel adjustment mechanism's mounting means, can also ensure that the mounted position is accurate.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

fig. 1 is a schematic structural diagram of a preferred embodiment of a hand wheel adjusting mechanism of a pneumatic actuator according to the present invention;

FIG. 2 is a schematic view of a portion of the structure of FIG. 1;

FIG. 3 is a schematic diagram of a pneumatic actuator;

FIG. 4 is a schematic view of the connection state of the hand wheel adjusting mechanism and the pneumatic actuator;

the parts in the drawings are numbered as follows: 1. the device comprises a box body, 2, an input shaft, 3, an output shaft, 31, a first positioning hole, 32, a positioning groove, 4, a hand wheel, 5, a first gear, 6, a second gear, 7, a fixing sleeve, 71, a second positioning hole, 72, a locking bolt, 8, a pneumatic actuator, 81, a threaded hole, 82, a connecting sleeve, 83, a positioning key, 84 and a gear shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below. The structure, ratio, size and the like shown in the drawings of the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention does not have the substantial significance in the technology, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy which can be produced by the present invention and the achievable purpose. In addition, the terms "upper", "lower", "left", "right" and "middle" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

Referring to fig. 1 to 4, a hand wheel adjusting mechanism of a pneumatic actuator includes a box 1, an input shaft 2 and an output shaft 3 are movably connected in the box 1, and an outer side of the input shaft 2 extends out of the box 1 and is connected with a hand wheel 4. The operator rotates the input shaft 2 by turning the hand wheel 4. The hand wheel 4 is selected from a configuration conventional in the art.

The middle part of the input shaft 2 is provided with a first gear 5, and the output shaft 3 is positioned below the input shaft 2 and is vertical to the input shaft 2. The output shaft 3 has a second gear 6 engaged with the first gear 5. Input shaft 2 is along horizontal setting, and output shaft 3 is vertical setting, and input shaft 2 and output shaft 3 pass through the bearing and rotate the connection in box 1. Input shaft 2 and output shaft 3 become perpendicular setting, avoid being located the coaxial line with input shaft 2 and gear shaft 84, come transmission power through first gear 5 and the meshing of second gear 6, and the gear ratio of first gear 5 and second gear 6 can be adjusted as required, reduces operating torque through this kind of structure, and the operator can be more accurate carry out manual regulation more fast.

The first gear 5 is connected to the middle of the input shaft 2, and the left side surface of the first gear 5 is a circumferential gear surface. The transmission teeth of the second gear 6 are integrally arranged at the upper end of the output shaft 3. The gear surface of the first gear 5 is perpendicular to the transmission gear of the second gear 6. The first gear 5 is a face gear, the transmission teeth of the second gear 6 and the face gear are vertically arranged, the right-angle meshed structure has the axial assembly freedom degree, is insensitive to assembly errors and also has higher contact rate, and normal use is not influenced even if slight abrasion occurs. Of course, the first gear 5 and the second gear 6 may be replaced by a conventional bevel gear or bevel gear, and the transmission of power may be realized.

The lower part of the box body 1 is connected with a fixed sleeve 7, and the fixed sleeve 7 is provided with a second positioning hole 71. The fixed sleeve 7 is sleeved on the housing of the pneumatic actuator 8 in a matching manner, so that the second positioning hole 71 is sleeved with the upper end of the housing of the pneumatic actuator 8. The periphery of the fixed sleeve 7 is in threaded connection with a plurality of locking bolts 72, the housing of the pneumatic actuator 8 is provided with a threaded hole 81, and the locking bolts 72 are screwed into the threaded hole 81 to connect the fixed sleeve 7 with the housing. The lower end of the box body 1 is connected on the shell through a fixed sleeve 7. The structure of the pneumatic actuator 8 is the conventional structure of the existing pneumatic actuator. After the pneumatic actuator 8 is installed in place, the box body 1 and the shell are fixed by screwing the locking bolt 72 into the threaded hole 81, the hand wheel adjusting mechanism can be always installed on the shell in the working process of the pneumatic actuator 8, the gear can be reversely driven during rotation to drive the hand wheel 4 of the input shaft 2 to rotate, the rotating angle of the pneumatic actuator 8 can be conveniently observed, and once a fault occurs, the manual insertion adjustment can be carried out at any time. The hand wheel structure can be installed after a fault, the installation structure is convenient to install, and operation can be performed at the first time.

The lower end of the output shaft 3 is provided with a first positioning hole 31. The first positioning hole 31 is connected to the upper end of the gear shaft 84. The upper end of the gear shaft 84 is fixedly provided with a connecting sleeve 82, the connecting sleeve 82 is provided with a positioning key 83, and the lower end of the output shaft 3 is provided with a positioning groove corresponding to the positioning key 83. The number of the positioning grooves 32 is 3, and are provided in a vertical direction. The first positioning hole 31 is used for accommodating the gear shaft 84, and the positioning key 83 on the gear shaft 84 is matched with the positioning groove 32 to ensure that the gear shaft and the output shaft 3 can be relatively fixed, so that the output shaft 3 and the gear shaft 84 can synchronously rotate. Through the convenient butt joint of navigation key 83 and constant head tank 32 structure, avoid easy dismounting, can play the effect of relative fastening simultaneously. The number of positioning grooves 32 is not limited to 3, and other numbers are possible. The hand wheel adjusting mechanism is arranged above the pneumatic actuator, the power transmission from the input shaft to the gear shaft is realized by adjusting the position relation of the input shaft 2, the output shaft 3 and the gear shaft 84, and the transmission structure is further optimized on the basis of saving space, so that the manual control is convenient.

Be different from prior art, the utility model discloses pneumatic actuator's hand wheel adjustment mechanism can control pneumatic actuator through hand wheel adjustment mechanism, optimizes the power transmission structure, and the operation is laborsaving, safe and reliable.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a pneumatic actuator's hand wheel adjustment mechanism, includes the box, swing joint has input shaft and output shaft in the box, its characterized in that, the box is stretched out and the hand wheel is connected with in the outside of input shaft, the middle part of input shaft is provided with first gear, the output shaft is located the below of input shaft and is perpendicular setting with the input shaft, have the second gear with first gear engagement on the output shaft, first locating hole has been seted up to the lower extreme of output shaft, the below of box is connected with fixed cover, the fixed second locating hole that has on sheatheeing in, fixed cover cooperation cover is established on pneumatic actuator's casing, makes second locating hole and pneumatic actuator's casing upper end cup joint, first locating hole is connected with the upper end of gear shaft.

2. The hand wheel adjusting mechanism of the pneumatic actuator as claimed in claim 1, wherein a connecting sleeve is fixedly arranged at the upper end of the gear shaft, a positioning key is arranged on the connecting sleeve, and a positioning groove corresponding to the positioning key is arranged at the lower end of the output shaft.

3. The handwheel adjustment mechanism of a pneumatic actuator of claim 2, wherein the number of positioning slots is 3 and are arranged in a vertical direction.

4. The hand wheel adjustment mechanism of a pneumatic actuator as claimed in claim 1, wherein the retaining sleeve is threaded on its outer circumference with a plurality of locking bolts, the housing of the pneumatic actuator having threaded holes, the locking bolts being threaded into the threaded holes to connect the retaining sleeve to the housing.

5. The hand wheel adjusting mechanism of the pneumatic actuator according to any one of claims 1 to 4, wherein the input shaft is arranged in a transverse direction, the output shaft is arranged in a vertical direction, and the input shaft and the output shaft are rotatably connected in the box body through bearings.

6. The hand wheel adjustment mechanism of a pneumatic actuator according to claim 5, wherein the first gear is connected to a middle portion of the input shaft, and a left side surface of the first gear is a circumferential gear surface.

7. The hand wheel adjustment mechanism of a pneumatic actuator according to claim 6, wherein the transmission teeth of the second gear are integrally formed at the upper end of the output shaft.

8. The hand wheel adjustment mechanism of a pneumatic actuator according to claim 7, wherein the gear surface of the first gear is perpendicular to the transmission teeth of the second gear.