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CN-122014705-A - Self-locking type hydraulic power system

CN122014705ACN 122014705 ACN122014705 ACN 122014705ACN-122014705-A

Abstract

The invention discloses a self-locking hydraulic power system which comprises a hydraulic pump, a reversing valve, a hydraulic rod, a hydraulic cylinder and a piston rod, wherein the hydraulic cylinder comprises a valve body, a hydraulic lock and a reversing valve rod mechanism which are arranged in the valve body, a first oil outlet, a second oil outlet and a circulation runner are arranged in the valve body, the circulation runner is provided with a first end and a second end which are opposite, the hydraulic lock is used for realizing the conduction and blocking between the first end and the first oil outlet, the reversing valve rod mechanism is used for applying driving force to the hydraulic lock, the hydraulic rod comprises a cylinder body and the piston rod, an inner cavity of the cylinder body is divided into a first subchamber and a second subchamber, when a first driving motor rotates along a first direction, the hydraulic lock can be pushed away by oil, when the first driving motor rotates towards a second direction, the reversing valve rod mechanism can open the hydraulic lock, and when the first driving motor stops rotating, the oil and the piston rod are in a static state. The self-locking hydraulic power system can stop the piston rod in any state and reduce the energy consumption.

Inventors

  • DENG XIANMIN
  • CHEN GUOQUAN
  • MAI GUANGZHI

Assignees

  • 长青热能科技(中山)有限公司

Dates

Publication Date
20260512
Application Date
20260126

Claims (10)

  1. 1. A self-locking hydraulic power system (100), comprising: The hydraulic pump (10) comprises an oil tank (11), a gear set (12) and a first driving motor (13), wherein the gear set (12) is arranged in the oil tank (11), and the first driving motor (13) is connected with the gear set (12); The reversing valve (20) comprises a valve body (21), a hydraulic lock (22) and a reversing valve rod mechanism (23) which are arranged in the valve body (21), wherein a first oil outlet (211), a second oil outlet (212) and a circulation flow channel (213) are arranged in the valve body (21), the first oil outlet (211) and the second oil outlet (212) are respectively communicated with a first end (2131) and a second end (2132) which are opposite to the circulation flow channel (213), the hydraulic lock (22) is arranged at the first end (2131) and is used for realizing the conduction and blocking between the first end (2131) and the first oil outlet (211), and the reversing valve rod mechanism (23) is arranged at the second end (2132) in a sliding mode and is used for realizing the breaking between the first end (2131) and the second end (2132) and the application of driving force to the hydraulic lock (22); The hydraulic rod (30) comprises a cylinder body (31) and a piston rod (32) movably arranged in the cylinder body (31), the piston rod (32) divides the inner cavity of the cylinder body (31) into a first subchamber (33) and a second subchamber (34), the first subchamber (33) is communicated with the first end (2131), and the second subchamber (34) is communicated with the second end (2132); When the first driving motor (13) rotates along a first direction, the hydraulic lock (22) can be pushed away by oil, so that communication between the first end (2131) and the first subchamber (33) is achieved, when the first driving motor (13) rotates along a second direction, the reversing valve rod mechanism (23) can move towards the direction of the hydraulic lock (22) under the driving of the oil, so that the hydraulic lock (22) is opened, wherein the second direction is opposite to the first direction, and when the first driving motor (13) stops rotating, the hydraulic lock (22) and the reversing valve rod mechanism (23) can be reset, so that the oil is in a static state, and the piston rod (32) is in a static state.
  2. 2. The self-locking hydraulic power system (100) according to claim 1, wherein, The flow channel (213) has a first segment (2133) and a second segment (2134) at the second end (2132) having different inner diameters, the inner diameter of the second segment (2134) being greater than the inner diameter of the first segment (2133); The reversing valve rod mechanism (23) comprises a valve rod (231) and a first sealing ring (232) sleeved on the valve rod (231), the valve rod (231) comprises a first portion (2311) and a second portion (2312) with different outer diameters, the outer diameter of the second portion (2312) is larger than that of the first portion (2311), the first sealing ring (232) is sleeved on the second portion (2312), the first portion (2311) is slidably arranged on the first section (2133), the second portion (2312) is slidably arranged on the second section (2134), and the first sealing ring (232) and the inner wall of the second section (2134) abut against each other.
  3. 3. The self-locking hydraulic power system (100) according to claim 2, wherein, The valve rod (231) further comprises a third portion (2313), the first portion (2311) and the second portion (2312) are sequentially connected, and the outer diameter of the third portion (2313) is smaller than that of the first portion (2311) and is used for applying pushing force to the hydraulic lock (22).
  4. 4. A self locking hydraulic power system (100) according to claim 2 or 3, wherein a clamping groove (2314) is provided on the outer wall of the valve rod (231), and the first sealing ring (232) is provided in the clamping groove (2314).
  5. 5. A self locking hydraulic power system (100) according to claim 2 or 3, wherein the reversing valve stem mechanism (23) further comprises a first elastic member (233), the first elastic member (233) being in abutment with an end of the valve stem (231) for applying an elastic force to the valve stem (231) in a direction away from the hydraulic lock (22).
  6. 6. The self-locking hydraulic power system (100) according to claim 5, wherein, The flow channel (213) further comprises a third section (2135) at the second end (2132), the third section (2135) being in communication with an end of the second section (2134) remote from the first section (2133), and the inner diameter of the third section (2135) being larger than the inner diameter of the second section (2134); the reversing valve rod mechanism (23) further comprises a supporting piece (234), the supporting piece (234) is sleeved on the valve rod (231), and two ends of the first elastic piece (233) are respectively supported against the side wall of the third section (2135) and the supporting piece (234).
  7. 7. A self-locking hydraulic power system (100) according to any one of claims 1-3, wherein the hydraulic lock (22) comprises a lock cylinder (221), a second elastic member (222) and a first mounting member (223) and a second mounting member (224) which are separately arranged, a mounting space (225) is formed between the first mounting member (223) and the second mounting member (224) in a surrounding manner, a passage opening (2241) and a flow outlet (2231) which are communicated with the mounting space (225) are respectively arranged on the second mounting member (224) and the first mounting member (223), the lock cylinder (221) and the first mounting member (223) are slidably arranged in the mounting space (225) for realizing opening and blocking of the passage opening (2241), and the second elastic member (222) is arranged in the mounting space (225) and two ends of the second elastic member are respectively abutted against the first mounting member (223) and the lock cylinder (221) for applying elastic force to the lock cylinder (221) towards the valve rod (23).
  8. 8. A self-locking hydraulic power system (100) according to any one of claims 1-3, wherein the self-locking hydraulic power system (100) further comprises a first pressure regulating valve (40), a first pressure regulating flow passage (214) and a first pressure regulating port (215) which are communicated are arranged on the valve body (21), the first pressure regulating port (215) can be communicated with the first oil outlet (211), and the first pressure regulating valve (40) is movably arranged in the flow passage of the first pressure regulating flow passage (214) and is used for regulating the size of a communication area where the first pressure regulating port (215) and the first oil outlet (211) are communicated; And/or the number of the groups of groups, The self-locking hydraulic power system (100) further comprises a second pressure regulating valve (50), a second pressure regulating flow passage (216) and a second pressure regulating port (217) which are communicated are arranged on the valve body (21), the second pressure regulating port (217) can be communicated with the second oil outlet (212), and the second pressure regulating valve (50) is movably arranged in the flow passage of the second pressure regulating flow passage (216) and is used for regulating the size of a communication area where the second pressure regulating port (217) and the second oil outlet (212) are communicated.
  9. 9. A self locking hydraulic power system (100) according to any one of claims 1-3, characterized in that the self locking hydraulic power system (100) further comprises a pressure sensor (60), the pressure sensor (60) being mounted to the valve body (21) for detecting the magnitude of the oil pressure of the first oil outlet (211) or the second oil outlet (212).
  10. 10. The self-locking hydraulic power system (100) according to any one of claims 1-3, wherein, The oil tank (11) is made of a metal material; The hydraulic pump (10) further comprises a telescopic membrane (16), and the telescopic membrane (16) is arranged on the inner wall of one end, far away from the valve body (21), of the oil tank (11).

Description

Self-locking type hydraulic power system Technical Field The invention belongs to the technical field of hydraulic pressure, and particularly relates to a self-locking hydraulic power system. Background The electrohydraulic push rod is a device for driving the movement of an external structure by driving the movement of a piston rod, and generally comprises a hydraulic pump and a hydraulic rod, wherein the hydraulic pump operates to drive the flow of oil, so that the piston rod in the hydraulic rod is driven to stretch and retract, and the expansion and contraction of the piston rod drives the movement of the external structure. However, when the piston rod in the prior art needs to drive the external structure to be in a static state, the piston rod can only be in the longest extending state or the completely retracting state, and the hydraulic pump still needs to be in a continuous running state at the moment so as to ensure the static state of the piston rod, thereby causing energy waste. Disclosure of Invention The invention aims to disclose a self-locking hydraulic power system to solve the problem of energy consumption caused by motor driving still required when a piston rod in an electrohydraulic push rod is in a static state in the prior art. In order to achieve the above object, the present invention discloses a self-locking hydraulic power system, comprising: The hydraulic pump comprises an oil tank, a gear set and a first driving motor, wherein the gear set is arranged in the oil tank, and the first driving motor is connected with the gear set; The reversing valve comprises a valve body, a hydraulic lock and a reversing valve rod mechanism, wherein the hydraulic lock and the reversing valve rod mechanism are arranged in the valve body, a first oil outlet, a second oil outlet and a circulation flow channel are arranged in the valve body, the first oil outlet and the second oil outlet are respectively communicated with a first end and a second end which are opposite to each other of the circulation flow channel, the hydraulic lock is arranged at the first end and is used for realizing the conduction and blocking between the first end and the first oil outlet, and the reversing valve rod mechanism is arranged at the second end in a sliding manner and is used for realizing the breaking between the first end and the second end and the application driving force to the hydraulic lock; The hydraulic rod comprises a cylinder body and a piston rod movably arranged in the cylinder body, the piston rod divides the inner cavity of the cylinder body into a first subchamber and a second subchamber, the first subchamber is communicated with the first end, and the second subchamber is communicated with the second end; When the first driving motor rotates in a second direction, the reversing valve rod mechanism can move in the direction of the hydraulic lock under the driving of the oil liquid to open the hydraulic lock, wherein the second direction is opposite to the first direction, and when the first driving motor stops rotating, the hydraulic lock and the reversing valve rod mechanism can reset to enable the oil liquid to be in a static state, so that the piston rod is in the static state. As an alternative embodiment, the flow channel has a first section and a second section with different inner diameters at the second end, the inner diameter of the second section being larger than the inner diameter of the first section; The reversing valve rod mechanism comprises a valve rod and a first sealing ring sleeved on the valve rod, the valve rod at least comprises a first part and a second part with different outer diameters, the outer diameter of the second part is larger than that of the first part, the first sealing ring is sleeved on the second part, the first part is slidably arranged on the first section, the second part is slidably arranged on the second section, and the first sealing ring abuts against the inner wall of the second section. As an alternative embodiment, the valve rod further comprises a third part, the first part and the second part are sequentially connected, and the outer diameter of the third part is smaller than the outer diameter of the first part, so as to apply a pushing force to the hydraulic lock. As an optional implementation manner, a clamping groove is formed in the outer wall of the valve rod, and the first sealing ring is arranged in the clamping groove. As an alternative embodiment, the reversing valve stem mechanism further includes a first elastic member, where the first elastic member abuts against one end of the valve stem, and is configured to apply an elastic force to the valve stem in a direction away from the hydraulic lock. As an alternative embodiment, the flow channel further comprises a third section at the second end, the third section is communicated with one end of the second section far away from the first section, and the inner diameter of the third section i