CN210770582U

CN210770582U - Manual shifting fork type mechanism

Info

Publication number: CN210770582U
Application number: CN201921157610.7U
Authority: CN
Inventors: 金松景
Original assignee: Ruida Automatic Control Valve Co ltd
Current assignee: Ruida Automatic Control Valve Co ltd
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2020-06-16
Anticipated expiration: 2029-07-23

Abstract

The utility model discloses a manual shifting fork type mechanism, which comprises a box body, a shifting fork, a guide rod and a guide block; the shifting fork is rotatably arranged in the box body; the upper end of the shifting fork extends out of the box body and is provided with an indicating shaft, the lower end of the shifting fork extends out of the box body, and the shifting fork end at the end is provided with a spline groove; the guide rod penetrates from one side of the box body to the other side of the box body; the surface of the guide rod is provided with an external thread; the guide block is spirally connected to the guide rod, a pin shaft is arranged on the guide block, and a shaft sleeve is arranged outside the pin shaft; the shaft sleeve is inserted into the shifting fork in an interference manner, so that the shifting fork rotates along with the rotation of the guide rod. The utility model adopts the lead screw conduction mode to realize the sliding of the guide block, and further drives the shifting fork to rotate; sliding friction of the shaft sleeve and the shaft is adopted between the shifting fork and the guide block, so that friction force during operation is reduced, torque transmission is more stable, and efficient operation is realized. The whole structure is simple, and the operation is simple and reliable; can be widely matched with valves for use.

Description

Manual shifting fork type mechanism

Technical Field

The utility model relates to an automatic control technical field particularly, relates to a manual shifting fork formula mechanism.

Background

Actuators are commonly used for automated control of valves. The valve can be accurately rotated to a required position under the action of a control signal through the driving of a motor. Actuators generally have two modes of operation, automatic and manual. At present, the manual actuator on the market has a complex structure and high manufacturing cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a manual fork mechanism that dials can solve one or more among the above-mentioned technical problem.

In order to achieve the above object, the present invention provides the following technical solutions:

the manual shifting fork type mechanism comprises a box body, a shifting fork, a guide rod and a guide block; the shifting fork is rotatably arranged in the box body; the upper end of the shifting fork extends out of the box body and is provided with an indicating shaft, the lower end of the shifting fork extends out of the box body, and a spline groove is formed in the shifting fork end at the end; the guide rod penetrates from one side of the box body to the other side of the box body; the surface of the guide rod is provided with an external thread; the guide block is spirally connected to the guide rod, a pin shaft is arranged on the guide block, and a shaft sleeve is arranged outside the pin shaft; the shaft sleeve is inserted into the shifting fork in an interference manner, so that the shifting fork rotates along with the rotation of the guide rod.

Further: the guide rod is positioned outside the box body and is provided with a hand wheel; the hand wheel with the guide bar passes through the key-type connection, the guide bar tip sets up the screw, the hand wheel passes through hexagon bolt to be fixed at the guide bar end.

Further: and bearings are arranged at two ends of the guide rod and are arranged on the wall of the box body.

Further: two ends of the guide rod on the box body are provided with flange plate interfaces, and flange end covers are connected through hexagon bolts; and a bearing accommodating cavity is arranged in the flange end cover.

Further: the adjusting mechanism comprises an adjusting bolt and a stop block, the adjusting bolt is in threaded connection with the box body, the adjusting bolt is symmetrically arranged on two sides of the shifting fork, the stop block and the shifting fork form an outer convex corner block in an integrated structure, and the stop block is opposite to the end face of the adjusting bolt.

Further: the end face of the indicating shaft is an upper end face, an assembly opening is formed in the upper end face, and an upper end cover is installed on the assembly opening through a bolt.

The technical effects of the utility model are that:

the utility model adopts the lead screw conduction mode to realize the sliding of the guide block, and further drives the shifting fork to rotate; sliding friction of the shaft sleeve and the shaft is adopted between the shifting fork and the guide block, so that friction force during operation is reduced, torque transmission is more stable, and efficient operation is realized. The whole structure is simple, and the operation is simple and reliable; the valve can be widely matched with valves, such as ball valves, butterfly valves, plug valves and the like, and is applied to industries and systems of petroleum, chemical industry, electric power, energy, metallurgy, papermaking, medicine, ships, building materials, steel, water supply and drainage, air conditioners, pipeline systems and the like.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

fig. 1 is a schematic diagram of the overall structure of the present invention;

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

FIG. 3 is a schematic top view of the structure of FIG. 1;

FIG. 4 is a schematic bottom view of the structure of FIG. 1;

FIG. 5 is a schematic view of the structure of FIG. 1 with the tank removed;

FIG. 6 is a schematic sectional view A-A of FIG. 2;

FIG. 7 is a schematic angle of adjustment of the present fork mechanism;

fig. 8 is a schematic diagram of the exploded structure of fig. 1.

Wherein the figures include the following reference numerals: the structure comprises a box body 1, a flange plate interface 11, a flange end cover 12, an assembling port 13 and an upper end cover 14; the shifting fork 2, the indicating shaft 21 and the spline groove 22; a guide rod 3, a bearing 31; the guide block 4, the pin shaft 41 and the shaft sleeve 42; a hand wheel 5, an adjusting bolt 6 and a stop dog 7.

Detailed Description

The invention will be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and the description are only intended to explain the invention, but not to limit the invention in a proper manner.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-6. The manual shifting fork type mechanism comprises a box body 1, a shifting fork 2, a guide rod 3 and a guide block 4; the shifting fork 2 is rotatably arranged in the box body 1; the upper end of the shifting fork 2 extends out of the box body 1 and is provided with an indicating shaft 21, the lower end of the shifting fork 2 extends out of the box body 1, and the shifting fork end at the end is provided with a spline groove 22; the guide rod 3 penetrates from one side of the box body to the other side of the box body 1; the surface of the guide rod 3 is provided with an external thread; the guide block 4 is spirally connected to the guide rod 3, a pin shaft 41 is installed on the guide block 4, and a shaft sleeve 42 is installed outside the pin shaft 41; the shaft sleeve 42 is inserted into the shifting fork 2 in an interference manner, so that the shifting fork 2 rotates along with the rotation of the guide rod 3.

In the utility model, the guide block slides through the guide rod with threads, so as to drive the shifting fork to turn, and realize the on-off adjustment of the valve; the thread adjustment is stable and accurate; and adopt the form of axle sleeve and round pin axle when the shift fork turns to reduce the friction, realized stable, reliable regulation, whole easy operation, the structure is uncomplicated.

Further: the guide rod 3 is positioned outside the box body and is provided with a hand wheel 5; the hand wheel 5 with the guide bar 3 passes through the key-type connection, the guide bar tip sets up the screw, the hand wheel passes through the hex bolts to be fixed at the guide bar end. The key-type connection realizes the transmission of moment of torsion, adopts hexagon bolt fixed hand wheel simultaneously, guarantees to use reliable, security.

Further: two ends of the guide rod 3 are provided with bearings 31, and the bearings 31 are installed on the wall of the box body 1. The bearing adopts a self-lubricating bearing, is used for supporting and positioning, has the functions of wear resistance, rotational sliding property, friction reduction and the like, and better ensures that a product can play the running performance.

Further: two ends of a guide rod on the box body 1 are provided with flange plate interfaces 11, and are connected with flange end covers 12 through hexagon bolts; a bearing accommodating cavity is arranged in the flange end cover 12. The flange plate interface is adopted, the modular design is realized, manual adjustment is adopted in the design, and the manual part can be replaced by other electric mechanisms according to the requirement.

Further: still include adjustment mechanism, adjustment mechanism includes adjusting bolt 6 and dog 7, adjusting bolt 6 swivelling joint is on the box, adjusting bolt 6 is two symmetries and sets up the both sides at the shift fork, dog 7 and shift fork body structure form the evagination angle piece, dog 7 is relative with 6 terminal surfaces of adjusting bolt. Stroke adjustment of ± 5 ° can be performed.

Further: the end face of the indicating shaft 21 is an upper end face, the upper end face is provided with an assembling port 13, and an upper end cover 14 is installed at the assembling port through a bolt.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Manual fork mechanism that dials, its characterized in that: comprises a box body, a shifting fork, a guide rod and a guide block; the shifting fork is rotatably arranged in the box body; the upper end of the shifting fork extends out of the box body and is provided with an indicating shaft, the lower end of the shifting fork extends out of the box body, and a spline groove is formed in the shifting fork end at the end; the guide rod penetrates from one side of the box body to the other side of the box body; the surface of the guide rod is provided with an external thread; the guide block is spirally connected to the guide rod, a pin shaft is arranged on the guide block, and a shaft sleeve is arranged outside the pin shaft; the shaft sleeve is inserted into the shifting fork in an interference manner, so that the shifting fork rotates along with the rotation of the guide rod.

2. The manual fork mechanism of claim 1, wherein: the guide rod is positioned outside the box body and is provided with a hand wheel; the hand wheel with the guide bar passes through the key-type connection, the guide bar tip sets up the screw, the hand wheel passes through hexagon bolt to be fixed at the guide bar end.

3. The manual fork mechanism of claim 1, wherein: and bearings are arranged at two ends of the guide rod and are arranged on the wall of the box body.

4. The manual fork mechanism of claim 3, wherein: two ends of the guide rod on the box body are provided with flange plate interfaces, and flange end covers are connected through hexagon bolts; and a bearing accommodating cavity is arranged in the flange end cover.

5. The manual fork mechanism of claim 1, wherein: the adjusting mechanism comprises an adjusting bolt and a stop block, the adjusting bolt is in threaded connection with the box body, the adjusting bolt is symmetrically arranged on two sides of the shifting fork, the stop block and the shifting fork form an outer convex corner block in an integrated structure, and the stop block is opposite to the end face of the adjusting bolt.

6. The manual fork mechanism of claim 1, wherein: the end face of the indicating shaft is an upper end face, an assembly opening is formed in the upper end face, and an upper end cover is installed on the assembly opening through a bolt.