CN-224228976-U - High-pressure internal throttling bidirectional hydraulic lock

Abstract

The utility model provides a high-pressure internal throttling bidirectional hydraulic lock, and belongs to the technical field of control valves. The problem that in the prior art, the hydraulic valve is difficult to assemble and impurities enter a sliding fit gap is solved. The valve comprises a valve body, a connector body, a valve core and a plunger, wherein a double-unidirectional valve cavity with two through sides is formed in the valve body, the plunger is arranged in the center of the double-unidirectional valve cavity, the number of the valve cores is two, the valve cores are symmetrically arranged in the double-unidirectional valve cavity at the two sides of the plunger, a sealing step is arranged at the inner side of the valve core, the sealing step is arranged between the plunger and the valve core and is respectively and hermetically connected with the plunger and the valve core, a spring cavity is formed in the valve core, a spring component is arranged in the spring cavity, the connector body is arranged in the double-unidirectional valve cavity at the outer side of the valve core, a spring groove is formed in the end face of the inner side of the connector body, and the spring component is connected with the end face of the spring groove. The utility model has the advantages of fewer parts, high stability, uniform pressure and strong sealing performance.

Inventors

• Yan Xuanwei

Assignees

• 浙江雄鹏机械股份有限公司

Dates

Publication Date

20260512

Application Date

20250523

Claims (6)

1. 1. The high-pressure internal throttling bidirectional hydraulic lock comprises a valve body (1), a joint body (2), valve cores (3) and a plunger (4), and is characterized in that double unidirectional valve cavities (11) with two through sides are formed in the valve body (1), the double unidirectional valve cavities (11) are symmetrically arranged, the plunger (4) is mounted at the center of the double unidirectional valve cavities (11), the valve cores (3) are of cylindrical step reducing structures, the number of the valve cores (3) is two, the valve cores (3) are symmetrically mounted inside the double unidirectional valve cavities (11) on two sides of the plunger (4), sealing steps (5) are mounted on the inner sides of the valve cores (3), the sealing steps (5) are mounted between the plunger (4) and the valve cores (3) and are respectively in sealing connection with the plunger (4) and the valve cores (3), spring assemblies (6) are mounted in the spring cavities (31), the joint body (2) is mounted on the outer sides of the double unidirectional valve cavities (11) of the valve cores (3), one end of the joint body (21) extends out of the joint body (21), one end of the joint body (21) is mounted in the single valve cores (21), a spring groove (71) is formed in the inner side end face of the plug body (7), and the spring assembly (6) is connected with the end face of the spring groove (71).
2. 2. The high-pressure internal throttling bidirectional hydraulic lock according to claim 1, wherein an upper side oil port (12) and a lower side oil port (13) are respectively formed in the valve body (1), the number of the upper side oil port (12) and the lower side oil port (13) is two, the upper side oil port (12) and the lower side oil port (13) are horizontally and symmetrically arranged, the upper side oil port (12) is communicated with a double-unidirectional valve cavity (11) close to the outer side, and the lower side oil port (13) is communicated with the double-unidirectional valve cavity (11) close to the inner side.
3. 3. The high-pressure inner throttling bidirectional hydraulic lock according to claim 1, wherein a first sealing ring (22) is sleeved in the connector body (2), and the first sealing ring (22) is installed between the connector body (2) and the inner wall of the outer end part of the double-unidirectional valve cavity (11).
4. 4. The high-pressure inner throttling bidirectional hydraulic lock according to claim 1, wherein a first sealing groove (51) is formed in the periphery of the sealing step (5), and a retainer ring (52) and a second sealing ring (53) are fixedly installed in the sealing groove.
5. 5. The high-pressure inner throttling bidirectional hydraulic lock according to claim 1, wherein a second sealing groove (41) is formed in the periphery of the plunger (4), and a third sealing ring (42) is fixedly arranged in the second sealing groove (41).
6. 6. The high-pressure internal throttling bidirectional hydraulic lock according to claim 1, wherein a third sealing groove (72) is formed in the plug body (7), and a fourth sealing ring (73) is arranged in the third sealing groove (72).

Description

High-pressure internal throttling bidirectional hydraulic lock Technical Field The utility model belongs to the technical field of control valves, and relates to a high-pressure internal throttling bidirectional hydraulic lock. Background The hydraulic lock is a special hydraulic valve, and the core function of the hydraulic lock in the hydraulic system is to lock an oil way, prevent the executive component from moving or sinking in a non-working state, and ensure the position stability and the system safety. The chinese patent with the patent publication number CN207621100U discloses a hydraulic lock, which comprises a lock body, the symmetry sets up the hydraulic valve in the lock body, the hydraulic valve includes the valve body and is located the inside case of valve body, be provided with a branch hole on the valve body, set up the oilhole that switches on with the a branch hole of hydraulic valve on the lock body, the front end and the valve core butt of hydraulic valve, the push rod that the outer symmetry of valve body set up is stretched out to the rear end, be provided with spacing protection section on the valve body, spacing protection section is hollow structure, front end and valve body fixed connection, the rear end has the annular, the push rod front end passes spacing protection section's internal cavity and case butt, the rear end impels to extreme position with spacing protection section's annular butt, spacing protection section has seted up the B branch hole that switches on with the oilhole on the lock body at the lateral wall. In the hydraulic lock that this patent provided, adopt the removal structure of push rod and sliding block, increased assembly complexity, and sliding fit clearance easily mixes fluid impurity, leads to the motion jamming. Disclosure of utility model The utility model aims to solve the problems in the prior art and provides a high-pressure internal throttling bidirectional hydraulic lock. The high-pressure internal throttling bidirectional hydraulic lock comprises a valve body, a connector body, valve cores and plungers, wherein double unidirectional valve cavities with two through sides are formed in the valve body, the double unidirectional valve cavities are symmetrically arranged, the plungers are installed at the centers of the double unidirectional valve cavities, the valve cores are of cylindrical stepped reducing structures, the number of the valve cores is two, the valve cores are symmetrically arranged in the double unidirectional valve cavities at two sides of the plungers, sealing steps are arranged at the inner sides of the valve cores, the sealing steps are arranged between the plungers and the valve cores and are respectively in sealing connection with the plungers and the valve cores, a spring cavity is formed in the valve cores, a spring component is arranged in the spring cavity, the connector body is arranged in the double unidirectional valve cavity at the outer side of the valve cores, one end of the connector body is sleeved outside the valve cores, the other end of the connector body extends out of the double unidirectional valve cavities, installation holes are formed in the connector body, plug bodies are connected in the installation holes, spring grooves are formed in the inner end faces of the plug bodies, and the spring component is connected with the end faces of the spring grooves. In the high-pressure internal throttling bidirectional hydraulic lock, the valve body is internally provided with the upper side oil port and the lower side oil port respectively, the number of the upper side oil port and the lower side oil port is two and are horizontally symmetrically arranged, the upper side oil port is communicated with the double-unidirectional valve cavity close to the outer side, and the lower side oil port is communicated with the double-unidirectional valve cavity close to the inner side. In the high-pressure internal throttling bidirectional hydraulic lock, the first sealing ring is sleeved in the connector body, and the first sealing ring is arranged between the connector body and the inner wall of the outer end part of the double unidirectional valve cavity. In the high-pressure internal throttling bidirectional hydraulic lock, the first sealing groove is formed in the periphery of the sealing step, and the check ring and the second sealing ring are fixedly installed in the sealing groove. In the high-pressure internal throttling bidirectional hydraulic lock, the outer periphery of the plunger is provided with the second sealing groove, and the second sealing groove is fixedly provided with the third sealing ring. In the high-pressure internal throttling bidirectional hydraulic lock, a third sealing groove is formed in the plug body, and a fourth sealing ring is arranged in the third sealing groove. Compared with the prior art, the high-pressure internal throttling bidirectional hydraulic lock has the advantages that 1, the v