CN106979377B

CN106979377B - Manual locking device

Info

Publication number: CN106979377B
Application number: CN201710202350.XA
Authority: CN
Inventors: 孙磊; 赵双龙; 袁洪滨; 徐登伟; 曾维亮; 沙超; 雷小飞
Original assignee: Xian Aerospace Propulsion Institute
Current assignee: Xian Aerospace Propulsion Institute
Priority date: 2017-03-30
Filing date: 2017-03-30
Publication date: 2023-08-04
Anticipated expiration: 2037-03-30
Also published as: CN106979377A

Abstract

The invention relates to a manual locking device, which is mainly used for solving the problems of unstable action guiding and low reliability of the existing manual locking device. The manual locking device comprises a valve cover, a valve body and a valve rod, wherein the valve cover is matched with the valve body, a spring is sleeved outside the valve rod, and one end of the valve rod penetrates through the valve cover to extend into the valve body, and the manual locking device is characterized in that: the valve gap outside is provided with "U" shape guide way, and the spring is located hollow spring holder, and the medial surface of spring holder lower part be provided with the guide screw that "U" shape guide way matches for the spring holder can reciprocate along "U" shape guide way, the other end of valve rod stretches out the spring holder. The manual locking device is stable in guiding, high in reliability and simple in structure.

Description

Manual locking device

Technical Field

The invention relates to a manual locking device, in particular to a manual locking device capable of improving action stability and self-locking reliability.

Background

The manual locking device is widely applied, is mainly used in the fields of ventilation pipelines, safety and theft prevention, electric switches and the like, is mainly of a screw fastening type locking structure, does not have a full-stroke guiding function or is not unique in guiding, is not stable enough, and is low in reliability due to the fact that misoperation, overaction or underaction are easy to occur in the action process.

Disclosure of Invention

The invention aims to solve the problems of unstable action guidance and low reliability of the existing manual locking device, and provides the manual locking device.

In order to accomplish the above object, the technical solution of the present invention is:

the manual locking device comprises a valve cover, a valve body and a valve rod, wherein the valve cover is matched with the valve body, a spring is sleeved outside the valve rod, and one end of the valve rod penetrates through the valve cover to extend into the valve body, and the manual locking device is characterized in that: the valve gap outside is provided with "U" shape guide way, and the spring is located hollow spring holder, and the medial surface of spring holder lower part be provided with the guide screw that "U" shape guide way matches for the spring holder can reciprocate along "U" shape guide way, the other end of valve rod stretches out the spring holder.

Pressing the spring seat, enabling the guide screw to move downwards to the annular section at the bottom of the U-shaped groove along the vertical section of the U-shaped groove, rotating the spring seat by 90 degrees, enabling the guide screw to enter the other vertical section of the U-shaped groove, loosening the spring seat, and enabling the guide screw to vertically lift to a limiting position along the U-shaped groove.

Further, the U-shaped guide groove comprises an annular section and a slope section, and the included angle between the slope section and the vertical direction is 1-3 degrees.

Further, the upper portion of the valve rod is in a cuboid form.

Further, a handle is arranged at the top of the valve rod.

Further, a guide block is arranged in the handle, a guide groove is formed in the top of the valve rod, and the guide block can slide up and down in the guide groove.

Further, the guide groove at the top of the valve rod and the guide block in the handle are of hexagonal structures.

In order to prevent partial performance failure caused by deviation of action positions, a limit stop is arranged on a valve rod arranged in a valve body along the circumferential direction, a limit step matched with the limit stop is arranged on the inner wall of the valve body, and the limit stop and the limit step limit the rotation process together.

Further, a limit groove is formed in the valve rod arranged in the valve body along the circumferential direction, and the limit stop is fixed in the limit groove.

In order to further limit the vertical position of the spring seat, a clamping ring is arranged on the valve rod extending out of the spring seat for limiting.

Compared with the prior art, the invention has the advantages that:

1. the valve cover is provided with a U-shaped guide groove which is matched with the guide screw of the spring seat, and the valve is prevented from misoperation by full-stroke guide rotation of the action process under the pointing action of the U-shaped guide groove.

2. The valve rod is provided with limit stop along the circumferencial direction, and the valve body inner wall is equipped with spacing step, and limit stop and spacing step cooperation are spacing to the rotation process, prevent to arouse partial performance inefficacy because action position deviation, and the reliability is high.

3. The valve cover U-shaped guide groove is of a slope structure, after the valve cover U-shaped guide groove rotates in place, the guide screw automatically bounces off along the guide groove by using the spring to lift and self-wedge, so that the position deviation of the limit stop is compensated, and the influence of the mechanical environment on the position locking of the manual operation mechanism is eliminated.

Drawings

FIG. 1 is a schematic cross-sectional view of a manual capture device of the present invention;

FIG. 2 is a top view of the valve cover of FIG. 1;

FIG. 3 is a front view of the valve cover of FIG. 1;

FIG. 4 is a schematic view of the cross-sectional structure in the direction A-A in FIG. 1;

FIG. 5 is a schematic illustration of the valve stem of FIG. 1;

fig. 6 is a schematic view of a sectional structure of the valve stem B-B in fig. 1.

In the figure: 1-valve body, 2-valve cover, 3-valve rod, 4-spring holder, 5-handle, 6-spring, 7-limit stop, 8-snap ring, 9-guide screw, 10- "U" -shaped guide slot, 11-guide slot, 12-guide block, 13-limit step, 14-limit slot.

Detailed Description

The invention is described in detail below with reference to the attached drawings and specific examples:

as shown in FIG. 1, the manual locking device comprises a valve cover 2, a valve body 1 and a valve rod 3, wherein the lower end of the valve cover 2 is matched with the valve body 1, a spring 6 is sleeved outside the valve rod 3, one end of the valve rod 3 penetrates through the valve cover 2 and stretches into the valve body 1, the manual locking device further comprises a spring seat 4 and a guide screw 9, the spring seat 4 is connected with the upper end of the valve cover 2, as shown in FIG. 2 and FIG. 3, a U-shaped guide groove 10 is formed in one side outside the valve cover 2, the U-shaped guide groove 10 comprises an annular section and a slope section, an included angle between the slope section and the vertical direction is 1-3 degrees, the guide screw 9 is arranged on the inner wall of the spring seat 4, the guide screw 9 is arranged in the U-shaped guide groove 10, and the other end of the valve rod 3 stretches out of the spring seat 4 and is limited by a clamping ring 8. As shown in fig. 6, the upper end of the valve rod 3 is provided with a square structure, in order to facilitate the operation, the top end of the valve rod 3 is provided with a handle 5, the top of the inner surface of the handle 5 is provided with a hexagonal guide block 12, meanwhile, the top of the valve rod 3 is provided with a guide groove 11, and the guide block 12 is placed in the guide groove 11 and can slide up and down in the guide groove 11. As shown in fig. 4 and 5, in order to prevent partial performance failure due to deviation of the action position, a limit groove 14 is provided in the valve rod 3 disposed in the valve body along the circumferential direction, a limit stop 7 is clamped in the limit groove 14, the limit stop 7 is fixed in the limit groove 14 by a bolt, a limit step 13 is provided on the inner wall of the valve body 1, and the limit stop 7 and the limit step 13 cooperate to limit the rotation process.

Pressing the handle, handle 5 drives spring holder 4 and slides downwards along valve rod 3, spring holder 4 overcomes spring force and makes guide screw 9 follow the slope section of "U" shape guide way 10 of valve gap 2 and move downwards to "U" shape guide way 10 bottom annular section, simultaneously the guide block 12 at the top in handle 5 slides to in the guide way 11 on valve rod 3 top, then rotatory handle 5 drives valve rod 3 and rotates 90, drive spring holder 4 and also rotate 90 when valve rod 3 rotates, make guide screw 9 get into another vertical section of "U" shape guide way 10, loosen the handle, spring holder 4 kick-backs under the spring restoring force, make guide screw 9 vertically lift to spacing position along "U" shape guide way 10, manual locking device can accomplish opening or closing operation and automatic locking.

Claims

1. The utility model provides a manual device of locking position, includes valve gap (2), valve body (1) and valve rod (3), valve gap (2) and valve body (1) cooperation, valve rod (3) overcoat is equipped with spring (6), and valve rod (3) one end passes valve gap (2) and stretches into valve body (1), its characterized in that: the valve cover (2) is provided with a U-shaped guide groove (10) at the outer side, the spring (6) is positioned in the hollow spring seat (4), the inner side surface of the lower part of the spring seat (4) is provided with a guide screw (9) matched with the U-shaped guide groove (10), the spring seat (4) can move up and down along the U-shaped guide groove (10), and the other end of the valve rod (3) extends out of the spring seat (4);

the U-shaped guide groove (10) comprises an annular section and a slope section, and the included angle between the slope section and the vertical direction is 1-3 degrees;

a handle (5) is arranged at the top of the valve rod (3); a guide block (12) is arranged in the handle (5), a guide groove (11) is formed in the top of the valve rod (3), and the guide block (12) can slide up and down in the guide groove (11);

the guide groove (11) at the top of the valve rod (3) and the guide block (12) in the handle (5) are of a hexagonal structure;

a limit stop (7) is arranged on a valve rod (3) arranged in the valve body (1) along the circumferential direction, and a limit step (13) matched with the limit stop (7) for use is arranged on the inner wall of the valve body (1);

a limit groove (14) is formed in a valve rod (3) arranged in the valve body (1) along the circumferential direction, and a limit stop block (7) is fixed in the limit groove (14).

2. The manual capture device of claim 1, wherein: the upper part of the valve rod (3) is in a cuboid form.

3. The manual capture device of claim 1, wherein: the valve rod (3) extending out of the spring seat (4) is provided with a clamping ring (8) for limiting.