CN210423932U

CN210423932U - Locking mechanism of hydraulic control valve

Info

Publication number: CN210423932U
Application number: CN201920544414.9U
Authority: CN
Inventors: 孙慧慧
Original assignee: Shanghai Yahe Valve Completion Co ltd
Current assignee: Shanghai Yahe Valve Completion Co ltd
Priority date: 2019-04-19
Filing date: 2019-04-19
Publication date: 2020-04-28
Anticipated expiration: 2029-04-19

Abstract

The utility model provides a liquid accuse valve locking mechanism relates to the liquid accuse valve field. This pilot operated valve locking mechanism, including pneumatic cylinder and casing, the last fixed surface of pneumatic cylinder and casing is connected, the inside cavity structure that is of casing, the through-hole rather than inside cavity intercommunication is seted up to the upper surface of casing, the main shaft of pneumatic cylinder is pegged graft in the through-hole, the main shaft lower extreme fixedly connected with rack of pneumatic cylinder, the right flank kernel of rack has first gear, the leading flank fixedly connected with sheave of first gear, the fixed grafting of centre of a circle department of first gear has the pivot, first gear and sheave are run through in the pivot, the pivot is kept away from the both ends of first gear and sheave and is pegged graft inner wall around the casing. This pilot operated valve locking mechanical system through setting up second gear, band pulley, sheave, shift fork, and the second gear rotation drives the band pulley rotation, has reached the effect of locking sheave, has solved prior art pilot operated valve and can lead to the valve gyration to cause the problem of incident because of system's pressure release.

Description

Locking mechanism of hydraulic control valve

Technical Field

The utility model relates to a liquid accuse valve technical field specifically is a liquid accuse valve locking mechanism.

Background

The valve is a control part in a fluid conveying system and has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like. In a fluid system, a valve is a device for controlling the direction, pressure, and flow rate of a fluid, and is a device capable of controlling the flow rate of a medium (liquid, gas, or powder) in a pipe or equipment by flowing or stopping the medium. The valve can be controlled by adopting various transmission modes, such as manual, electric, hydraulic, pneumatic, turbine, electromagnetic hydraulic, electrohydraulic, pneumatic hydraulic, spur gear, bevel gear drive and the like; the valve can be operated according to the preset requirement under the action of pressure, temperature or other forms of sensing signals, or can be simply opened or closed without depending on the sensing signals, and the valve can make the opening and closing piece perform lifting, sliding, swinging or rotating motion by depending on a driving or automatic mechanism, so that the size of the flow passage area of the valve can be changed to realize the control function of the valve.

The common valve equipment adopts a hydraulic cylinder for control, the motion state of a piston rod of the hydraulic cylinder is controlled by the oil pressure of a system, when the piston rod returns to a required position, the piston rod is ensured not to extend out by the pressure in the oil cylinder, once the system releases the pressure, the motion of the piston rod can not be controlled, the requirement of the valve equipment can not be accurately met, and the great uncertain potential safety hazard exists.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a liquid accuse valve locking mechanism has solved prior art liquid accuse valve gear in case the system pressure release out of control can lead to the problem of incident.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a hydraulic control valve locking mechanism comprises a hydraulic cylinder and a shell, wherein the hydraulic cylinder is fixedly connected with the upper surface of the shell, the interior of the shell is of a cavity structure, the upper surface of the shell is provided with a through hole communicated with an inner cavity of the shell, a main shaft of the hydraulic cylinder is inserted into the through hole, the lower end of the main shaft of the hydraulic cylinder is fixedly connected with a rack, the right side surface of the rack is meshed with a first gear, the front side surface of the first gear is fixedly connected with a grooved pulley, a rotating shaft is fixedly inserted in the circle center of the first gear and penetrates through the first gear and the grooved pulley, two ends of the rotating shaft, far away from the first gear and the grooved pulley, are inserted in the front inner wall and the rear inner wall of the shell, bearings are fixedly embedded in the front inner wall and the rear inner wall of the shell, two ends of the rotating shaft are fixedly connected with inner rings of the bearings, the left, the lateral surface fixed mounting of second gear has the band pulley, the fixed winding of periphery of band pulley has the steel wire, the inner wall right side of casing is provided with the shift fork, peg graft in the upper end of shift fork, inner wall fixed connection around peg and the casing, the one end fixedly connected with inserted block of peg is kept away from to the shift fork, the one end that the band pulley was kept away from to the steel wire and the left surface fixed connection of shift fork, the right-hand fixed mounting that the right side face of shift fork is located the inserted block has the spring, the one end that the shift fork was kept away from to the spring and the inner wall.

Preferably, the inner bottom wall of the shell is fixedly provided with a limit detection device, and the limit detection device is positioned below the rack.

Preferably, two fixing rods are fixedly installed between the upper end of the hydraulic cylinder and the upper surface of the shell, and the two fixing rods are symmetrically installed with the vertical center line of the hydraulic cylinder.

Preferably, the sheave is mounted concentrically with the first gear and the second gear is mounted concentrically with the pulley.

Preferably, the shape of the shift fork is arc, and the arc surface of the shift fork faces the circumferential surface of the first gear.

Preferably, the steel wire is wound on the circumferential surface of the belt wheel, and one end of the steel wire is fixedly connected with the circumferential surface of the belt wheel.

(III) advantageous effects

The utility model provides a liquid accuse valve locking mechanism. The method has the following beneficial effects:

1. this pilot operated valve locking mechanism, through setting up the second gear, the band pulley, the sheave, the shift fork, the second gear rotates and drives the band pulley rotatory, because the fixed winding of periphery of band pulley has the steel wire, the rotatory steel wire that can stimulate of band pulley, the steel wire can stimulate the shift fork and be close to the sheave, can drive the sheave rotation when the rack moves down, the shift fork removes and can drive the inserted block and peg graft in the groove of sheave, the effect of locking sheave has been reached, the problem that prior art pilot operated valve can lead to the valve gyration to cause the incident because of the system pressure release has been solved.

2. This pilot operated valve locking mechanism, through setting up spring and spacing detection device, the spring is in tensile state when the shift fork is close to the sheave, and when rack rebound, the spring can be fast to the shift fork pull back, has reached the effect of quick unblock sheave, and when the rack is close to downwards, can touch spacing detection device, pneumatic cylinder stop work this moment has reached restriction pneumatic cylinder displacement effect, has solved because the pneumatic cylinder control problem leads to the problem that inner structure damaged.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the connection between the shaft and the housing of the present invention;

FIG. 3 is a schematic view of the rack connection of the present invention;

fig. 4 is an enlarged view of fig. 1A according to the present invention.

The device comprises a hydraulic cylinder 1, a shell 2, a through hole 3, a rack 4, a first gear 5, a grooved wheel 6, a rotating shaft 7, a bearing 8, a second gear 9, a support 10, a belt wheel 11, a steel wire 12, a shifting fork 13, a pin 14, an insertion block 15, a spring 16, a limiting detection device 17 and a fixing rod 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment of the utility model provides a liquid control valve locking mechanism, as shown in fig. 1-4, including pneumatic cylinder 1 and casing 2, pneumatic cylinder 1 passes through the hydraulic pressure union coupling with the hydraulic controller, casing 2's interior diapire fixed mounting has spacing detection device 17, spacing detection device 17 is located the below of rack 4, spacing detection device 17 can provide the hydraulic controller signal, make pneumatic cylinder 1 in the right position in time close, fixed mounting has two dead levers 18 between the upper end of pneumatic cylinder 1 and the upper surface of casing 2, two dead levers 18 are installed with the perpendicular center line symmetry of pneumatic cylinder 1, dead lever 18 can make the more firm installation of pneumatic cylinder 1 at the upper surface of casing 2, pneumatic cylinder 1 is connected with the upper surface fixed of casing 2, casing 2 inside is the cavity structure, casing 2's upper surface sets up the through-hole 3 that communicates with its inside cavity, the main shaft of the hydraulic cylinder 1 is inserted in the through hole 3, the lower end of the main shaft of the hydraulic cylinder 1 is fixedly connected with a rack 4, tooth grooves are formed in two sides of the rack 4, a first gear 5 is arranged in the right side surface of the rack 4, a sheave 6 is fixedly connected with the front side surface of the first gear 5, the sheave 6 and the first gear 5 are concentrically installed, the diameter of the sheave 6 is smaller than that of the first gear 5, a rotating shaft 7 is fixedly inserted in the circle center of the first gear 5, one end of the rotating shaft 7, which is positioned outside the shell 2, is connected with the main shaft of the valve, the rotating shaft 7 penetrates through the first gear 5 and the sheave 6, two ends of the rotating shaft 7, which are far away from the first gear 5 and the sheave 6, are inserted in the front inner wall and the rear inner wall of the shell 2, a bearing 8 is fixedly embedded in the front inner wall and rear inner wall of the shell 2, two ends of the, the support 10 is positioned at the left side of the second gear 9, a main shaft of the second gear 9 is rotationally connected with the support 10, a belt wheel 11 is fixedly installed on the outer side surface of the second gear 9, the second gear 9 and the belt wheel 11 are concentrically installed, the diameter of the belt wheel 11 is smaller than that of the second gear 9, a steel wire 12 is fixedly wound on the circumferential surface of the belt wheel 11, the steel wire 12 is wound on the circumferential surface of the belt wheel 11, one end of the steel wire 12 is fixedly connected with the circumferential surface of the belt wheel 11, a shifting fork 13 is arranged at the right side of the inner wall of the shell 2, the shifting fork 13 is arc-shaped, the arc surface of the shifting fork 13 faces the circumferential surface of the first gear 5, a pin 14 is inserted into the upper end of the shifting fork 13, the pin 14 is fixedly connected with the front inner wall and the rear inner wall of the shell 2, an insert block 15 is fixedly connected with one end of the shifting fork 13 far away, a spring 16 is fixedly mounted on the right side surface of the shifting fork 13 on the right side of the insert block 15, and one end, far away from the shifting fork 13, of the spring 16 is fixedly connected with the right side of the inner wall of the shell 2.

The working principle is that when the hydraulic cylinder 1 is signaled by the controller, the main shaft of the hydraulic cylinder starts to move downwards, and the main shaft is fixedly connected with the rack 4, so that the rack 4 moves downwards, the rack 4 moves downwards to drive the first gear 5 to rotate, the second gear 9 also starts to rotate, the pulley 11 also starts to rotate as the pulley 11 is installed at the center of the circle of the second gear 9, the pulley 11 starts to wind the steel wire 12, the other end of the steel wire 12 starts to generate pulling force on the shifting fork 13, the upper end of the shifting fork 13 is hinged with the shell 2, so that the lower end of the shifting fork 13 starts to approach the sheave 6, the sheave 6 is driven by the rotation of the first gear 5, when the rack 4 continues to move downwards, the insert block 15 on the shifting fork 13 is inserted into the groove of the sheave 6, and the limit detection device 17 receives a signal at the moment, the controller stops the operation of the hydraulic cylinder 1, so that the whole, when the controller is turned on, the rack 4 moves upwards, and due to the arrangement of the spring 16, the shifting fork 13 rotates to the right, so that the grooved wheel 6 can rotate, and further the rack 4 can move upwards.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a liquid accuse valve locking mechanism, includes pneumatic cylinder (1) and casing (2), its characterized in that: the hydraulic cylinder (1) is fixedly connected with the upper surface of the shell (2), the shell (2) is internally provided with a cavity structure, the upper surface of the shell (2) is provided with a through hole (3) communicated with an internal cavity of the shell, a main shaft of the hydraulic cylinder (1) is inserted into the through hole (3), the lower end of the main shaft of the hydraulic cylinder (1) is fixedly connected with a rack (4), the right side surface of the rack (4) is meshed with a first gear (5), the front side surface of the first gear (5) is fixedly connected with a grooved pulley (6), a rotating shaft (7) is fixedly inserted at the circle center of the first gear (5), the rotating shaft (7) penetrates through the first gear (5) and the grooved pulley (6), two ends, far away from the first gear (5) and the grooved pulley (6), of the rotating shaft are inserted into the front inner wall and the rear inner wall of the shell (2), a bearing (8) is fixedly embedded into the front and rear inner walls of the, a second gear (9) is meshed with the left side surface of the rack (4), a support (10) is fixedly mounted on the left side of the inner wall of the shell (2), the support (10) is positioned on the left side of the second gear (9), a main shaft of the second gear (9) is rotatably connected with the support (10), a belt pulley (11) is fixedly mounted on the outer side surface of the second gear (9), a steel wire (12) is fixedly wound on the circumferential surface of the belt pulley (11), a shifting fork (13) is arranged on the right side of the inner wall of the shell (2), a pin (14) is inserted into the upper end of the shifting fork (13), the pin (14) is fixedly connected with the front inner wall and the rear inner wall of the shell (2), an insert block (15) is fixedly connected with one end of the shifting fork (13) far away from the pin (14), one end of the steel wire (12) far away from the belt pulley (11) is fixedly connected with the left side surface of the shifting fork, one end of the spring (16) far away from the shifting fork (13) is fixedly connected with the right side of the inner wall of the shell (2).

2. The locking mechanism of claim 1, further comprising: the inner bottom wall of the shell (2) is fixedly provided with a limiting detection device (17), and the limiting detection device (17) is located below the rack (4).

3. The locking mechanism of claim 1, further comprising: two fixing rods (18) are fixedly installed between the upper end of the hydraulic cylinder (1) and the upper surface of the shell (2), and the two fixing rods (18) are symmetrically installed with the vertical center line of the hydraulic cylinder (1).

4. The locking mechanism of claim 1, further comprising: the grooved wheel (6) and the first gear (5) are concentrically arranged, and the second gear (9) and the belt wheel (11) are concentrically arranged.

5. The locking mechanism of claim 1, further comprising: the shifting fork (13) is arc-shaped, and the arc surface of the shifting fork (13) faces to the circumferential surface of the first gear (5).

6. The locking mechanism of claim 1, further comprising: the steel wire (12) is wound on the circumferential surface of the belt wheel (11), and one end of the steel wire (12) is fixedly connected with the circumferential surface of the belt wheel (11).