CN212130933U

CN212130933U - Hydraulic valve lock

Info

Publication number: CN212130933U
Application number: CN202020553782.2U
Authority: CN
Inventors: 徐良
Original assignee: Dalian Dingtai Machinery Co ltd
Current assignee: Dalian Dingtai Machinery Co ltd
Priority date: 2020-04-15
Filing date: 2020-04-15
Publication date: 2020-12-11
Anticipated expiration: 2030-04-15

Abstract

A set of safety device for protecting a pressure valve from changing set working pressure in the working process is provided, only a corresponding key is inserted into a lock cylinder installed at the end of a hydraulic valve to jack up an unlocking marble, the unlocking marble can rotate 90 degrees clockwise, meanwhile, a movable key pin is pushed into an opening of a split threaded sleeve, and a hand wheel can adjust the linear movement of threads of a split clamping sleeve to push the pressure valve core to set pressure. Then the movable key pin is returned to withdraw the key to lock.

Description

Hydraulic valve lock

Technical Field

The utility model relates to a hydraulic pressure valve lock specifically is for the pressure valve among the hydraulic system, provides one set of protection pressure valve in the course of the work, and the operating pressure of settlement can not manual device that changes wantonly, prevents to change operating pressure accident in that the work is unexpected, influences production to, guaranteed hydraulic system's operational reliability, improved production efficiency.

Background

At present, pressure valves in domestic hydraulic systems are all open without locking devices. Therefore, the hydraulic system becomes a bottleneck restricting the production development along with the improvement of the mechanization and automation level, and the key is to ensure the working pressure of the pressure valve to be constant.

Disclosure of Invention

The utility model discloses a pressure valve among the hydraulic system provides one set of hydraulic valve lock, pins hydraulic system in the course of the work, and the hydraulic pressure of settlement is unchangeable. Only when a corresponding key is inserted into the lock core and the unlocking marble is jacked up, the movable key pin can be rotated by 90 degrees clockwise, meanwhile, the movable key pin is pushed into an opening of the hydraulic opening screw sleeve, a hand wheel is rotated by a hand, a threaded screw rod for adjusting pressure moves linearly, the pressure valve core is pushed to be adjusted to set pressure, then the movable key pin returns, the key is withdrawn, and the locking marble enters the lock core and cannot rotate under the pushing of the spring.

The hydraulic valve lock is formed by connecting a key, a lock body, a lock core, unlocking long and short marbles, a spring, an opening screw sleeve, a movable key pin, a fixed round pin, a hand wheel and a cylindrical pin in sequence. The method is characterized in that: three unlocking long and short marbles are arranged on the vertical center line of the lock core and horizontally arranged in the middle of the lock body, and are horizontally arranged in the split thread sleeve, when a key is inserted into the lock core to jack up the three unlocking marbles and rotate 90 degrees clockwise, the movable key pin enters the split thread sleeve, and the hand wheel is manually rotated to adjust the set pressure of the hydraulic valve. The cylinder pin on the end face of the lock core is inserted into the middle of the cylinder of the movable key pin, namely the long through groove is connected, when the lock core rotates clockwise, the compression spring in the movable key pin is released to push the movable key pin to enter the opening of the opening threaded sleeve and be connected with the opening threaded sleeve into a whole, the hand wheel is manually rotated to adjust the pressure of the hydraulic valve, the cylinder pin in the groove rotates to the highest point, the return cylinder pin presses the movable key pin, and the exit threaded sleeve stops to the lowest point. On the perpendicular central line of lock core, be equipped with three pellet shot from a slingshot of unblanking, it is big that the above-mentioned diameter is big, the following diameter is little, the middle length, both sides are short, it can not exceed lock core external diameter side to insert three pellet shot from a slingshot of unblanking of key jack-up, because the lock core setting is below lock body central line under perpendicular, and three overcoat lead wire dead riveted springs and locking cartridge have been arranged on being greater than the lock body radius to the top, when the lock core changes the normal position back, owing to jack-up earlier when inserting the key and unblank the cartridge, promote locking pellet shot compression spring and get into the lock body, after dragging out the key completely, compression spring is released, promote locking pellet shot from a sling. On the outer diameter of the lock core, a 90-degree groove is formed and connected with a positioning round pin on the lock body, so that the lock can be controlled to rotate by 90 degrees accurately when being unlocked. The opening screw sleeve of the lock is in threaded connection with the head rest of the hydraulic valve end, and the hand wheel is sleeved on the outer circle of the valve core and is connected with the valve core through a fixed spring clamping ring. The key jacks up three unlocking marbles, and the middle of the key is deep, and the two sides of the key are shallow.

By adopting the scheme, the reliability of the hydraulic system is improved, unnecessary accidents are avoided, the structure is simple, the assembly is convenient, and the hydraulic system is easy to realize and has obvious economic benefit because the hydraulic system is made of common parts and components.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention

FIG. 2 plan view A-A of FIG. 1

In the figure, 1, a lock core, 2, a lock body, 3, a hand wheel, 4, a screw, 5, an opening screw sleeve, 6 and a valve core,

7. the key comprises a movable key pin 8, a movable key pin spring 9, a positioning round pin 10, a key 11, a fixed spring retainer ring 12, a cylindrical pin 13, an unlocking short type marble 14, an unlocking long type marble 15, an aluminum wire 16 and a spring.

Detailed Description

The vertical central line of the lock core 1 is provided with three unlocking long and short marbles 13 and 14, the lower part of the lock core is horizontally deviated from the middle of the lock body 2, and the unlocking long and short marbles and the lock body are horizontally arranged in the opening screw sleeve 5. When a key 10 is inserted into a lock cylinder 1 to jack up three unlocking marbles 13 and 14 and rotates 90 degrees clockwise, a movable key pin 7 enters an opening of an opening screw sleeve 5 under the pushing of a movable key pin spring 8 and is connected with the opening screw sleeve into a whole, a hand wheel 3 is manually rotated to drive an opening screw sleeve thread for adjusting pressure, the movable key pin 7 moves while rotating in an internal thread of a hydraulic valve core 6 to push the valve core to adjust set pressure, then the key 10 rotates, the end surface of the lock cylinder 1 is inserted into a cylindrical pin 12 in a cylindrical middle groove of the movable key pin 7 to compress the spring 8 to force the movable key pin 7 to exit the opening screw sleeve 5, when the movable key pin rotates 90 degrees, the movable key pin is blocked by a positioning round pin 9, after the key 10 is pulled out, the compression spring 16 is released to push the unlocking long and short marbles 13 and 14 to. The hand wheel 3 is connected with the lock body 2 by a screw 4.

Claims

1. The utility model provides a hydraulic valve lock, by key, lock body, lock core, the long, short type pellet shot from a slingshot of unblanking, hand wheel, spring, opening swivel nut, activity key round pin, location round pin, hand wheel, fixed spring rand, cylindric lock connect gradually and constitute characterized by: three unlocking long and short marbles are horizontally arranged in the middle of the lock body on the vertical center line of the lock core, and are horizontally arranged in the opening screw sleeve.

2. The hydraulic valve lock of claim 1, wherein: the cylinder pin on the end face of the lock core is inserted into the middle of the cylinder of the movable key pin, namely the long through groove is connected, when the lock core rotates clockwise, the compression spring in the movable key pin is released to push the movable key pin to enter the opening of the opening threaded sleeve and be connected with the opening threaded sleeve into a whole, the hand wheel is manually rotated to adjust the pressure of the hydraulic valve, the cylinder pin in the groove rotates to the highest point, when the lock core returns, the cylinder pin presses the movable key pin, and the opening threaded sleeve is withdrawn and stops to the lowest point.

3. The hydraulic valve lock of claim 1, wherein: three unlocking marbles are arranged on the vertical center line of the lock cylinder, the upper surface of the lock cylinder is large in diameter, the lower surface of the lock cylinder is small in diameter, the middle of the lock cylinder is long, the two sides of the lock cylinder are short, and the lock cylinder can rotate as long as a key is inserted to jack up the three unlocking marbles without exceeding the outer diameter of the lock cylinder.

4. The hydraulic valve lock of claim 1, wherein: because the lock core is arranged below the center line of the lock body vertically and is inclined to the lower side, and three springs and locking springs which are riveted by outer lead wires are arranged above the lock body in a manner of being larger than the radius of the lock body, when the lock core rotates back to the original position, the unlocking spring is jacked up firstly when the key is inserted, the locking spring is pushed to enter the lock body, and after the key is pulled out completely, the compression springs are released, and the locking springs and the unlocking springs are pushed to enter the lock core and are locked.

5. The hydraulic valve lock of claim 1, wherein: the outer diameter of the lock core is provided with a 90-degree groove which is connected with a positioning round pin on the lock body to control the lock to rotate by 90 degrees accurately when unlocking.

6. The hydraulic valve lock of claim 1, wherein: the opening screw sleeve of the lock is in threaded connection with the head rest of the hydraulic valve end, and the hand wheel is sleeved on the outer circle of the valve core and connected with the valve core through a fixing spring retainer ring.

7. The hydraulic valve lock of claim 1, wherein: the key jacks up three unlocking marbles, and the middle of the key is deep, and the two sides of the key are shallow.