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CN-121993441-A - Power external transfusion pressure system, crane and piling method

CN121993441ACN 121993441 ACN121993441 ACN 121993441ACN-121993441-A

Abstract

The application relates to the technical field of cranes, and discloses a power external transfusion pressure system, a crane and a piling method, wherein the power external transfusion pressure system comprises an oil supply subsystem, a get-off action subsystem and a piling action subsystem, the oil supply subsystem comprises an oil tank, a main pump and a power switching valve, the power switching valve comprises a first working oil port, a second working oil port and a third working oil port, an oil inlet of the main pump is connected with the oil tank, the oil outlet of the main pump is connected with the first working oil port, the getting-off action subsystem comprises a getting-off motor, the getting-off motor is connected with the second working oil port, the piling action subsystem comprises a reversing valve group, a leveling oil cylinder and a ground supporting oil cylinder, the two third working oil ports are respectively connected with the oil inlet and the oil return port of the reversing valve group, and the leveling oil cylinder and the ground supporting oil cylinder are respectively connected with the reversing valve group. The application can meet the flow requirement of the pile frame and reduce the complexity of the power external transfusion system.

Inventors

  • WANG CHUNYI
  • QI FANG
  • XIA XIN

Assignees

  • 浙江三一装备有限公司

Dates

Publication Date
20260508
Application Date
20260325

Claims (10)

  1. 1. A powered external infusion pressure system, comprising: The oil supply subsystem comprises an oil tank (101), a main pump (102) and a power switching valve (103), wherein the power switching valve (103) comprises a first working oil port, a second working oil port and a third working oil port, the power switching valve (103) can enable the first working oil port to be switched and connected with the second working oil port or the third working oil port, an oil inlet of the main pump (102) is connected with the oil tank (101), and an oil outlet of the main pump (102) is connected with the first working oil port; The getting-off action subsystem comprises a getting-off motor (201), and the getting-off motor (201) is connected with the second working oil port; The piling action subsystem comprises a reversing valve group (301), a leveling oil cylinder (302) and a ground supporting oil cylinder (303), wherein two third working oil ports are respectively connected with an oil inlet and an oil return port of the reversing valve group (301), and the leveling oil cylinder (302) and the ground supporting oil cylinder (303) are respectively connected with the reversing valve group (301).
  2. 2. The power external fluid pressure system according to claim 1, wherein the power switching valve (103) further comprises a first control oil port, the oil supply subsystem further comprises a servo pump (105), a pressure reducing valve group (106) and a control valve group, the control valve group comprises a first sub-control valve (1071), an oil inlet of the servo pump (105) is connected to the oil tank (101), an oil outlet of the servo pump (105) is connected to an oil inlet of the pressure reducing valve group (106), an oil outlet of the pressure reducing valve group (106) is connected to an oil inlet of the first sub-control valve (1071), and an oil outlet of the first sub-control valve (1071) is connected to the first control oil port for controlling the power switching valve (103) to act.
  3. 3. The power out-feed hydraulic system of claim 2, wherein the oil supply subsystem further comprises a main directional valve (104), the main directional valve (104) comprises a fourth working port, an oil outlet of the main pump (102) is connected to an oil inlet of the main directional valve (104), and the fourth working port is connected to the first working port.
  4. 4. A power external fluid pressure system according to claim 3, wherein the main reversing valve (104) further comprises a second control oil port and a third control oil port, the oil supply subsystem further comprises a first pilot proportional valve (108) and a second pilot proportional valve (109), the control valve group further comprises a second pilot valve (1072), the oil outlet of the pressure reducing valve group (106) is connected to the oil inlet of the second pilot valve (1072), the oil inlets of the first pilot proportional valve (108) and the second pilot proportional valve (109) are connected in parallel to the oil outlet of the second pilot valve (1072), the oil outlet of the first pilot proportional valve (108) is connected to the second control oil port, and the oil outlet of the second pilot proportional valve (109) is connected to the third control oil port.
  5. 5. The power out-of-fluid pressure system of claim 4, wherein the control valve bank further comprises a main control valve (1073), an oil outlet of the pressure reducing valve bank (106) is connected to an oil inlet of the main control valve (1073), and an oil inlet of the first sub control valve (1071) and an oil inlet of the second sub control valve (1072) are connected in parallel to an oil outlet of the main control valve (1073).
  6. 6. A power out-feed hydraulic system according to claim 3, characterized in that the oil supply subsystem further comprises a radiator (110) and a first relief valve (111), the radiator (110) comprises a heat exchanger (1101) and a heat dissipation motor (1102), the oil return port of the main reversing valve (104) is connected to the oil inlet of the heat exchanger (1101) through the first relief valve (111), the oil outlet of the heat exchanger (1101) is connected to the oil tank (101), the oil outlet of the servo pump (105) is connected to the oil inlet of the heat dissipation motor (1102), and the oil outlet of the heat dissipation motor (1102) is connected to the oil inlet of the pressure relief valve block (106).
  7. 7. The power out-of-delivery fluid pressure system of claim 6, wherein the oil supply subsystem further comprises a rotary pump (113), an oil inlet of the rotary pump (113) is connected to the oil tank (101), and an oil outlet of the rotary pump (113) is connected to the off-vehicle motion subsystem; The oil supply subsystem further comprises a second pressure relief valve (114), and an oil outlet of the rotary pump (113) is further connected to an oil inlet of the heat exchanger (1101) through the second pressure relief valve (114).
  8. 8. The power external infusion pressure system according to claim 1, wherein the reversing valve group (301) comprises a plurality of leveling reversing valves (3011), and the number of the leveling cylinders (302) is plural and is respectively connected to the corresponding leveling reversing valves (3011); Or the piling action subsystem further comprises a synchronous valve (304), the reversing valve group (301) comprises leveling reversing valves (3011), and the leveling cylinders (302) are multiple in number and are connected to the leveling reversing valves (3011) in parallel through the synchronous valve (304).
  9. 9. A crane comprising the powered external infusion pressure system of any one of claims 1 to 8.
  10. 10. A method of piling using the powered external infusion pressure system of any one of claims 1 to 8, comprising: -controlling the actuation of the power switching valve (103) so that the main pump (102) is adapted to supply oil to the reversing valve group (301); Controlling the leveling oil cylinder (302) to act, and adjusting the angle of the pile frame (401); and controlling the ground supporting oil cylinder (303) to act so as to support the pile frame (401).

Description

Power external transfusion pressure system, crane and piling method Technical Field The application relates to the technical field of cranes, in particular to a power external transfusion pressure system, a crane and a piling method. Background Pile foundation construction is an important foundation for engineering operation, and the pile foundation is in various types such as precast piles, cast-in-place piles, stirring piles and the like. Some related art drives a pipe into a foundation by hammering means (e.g., diesel hammer, hydraulic hammer), and in order to reduce the number of construction machines, piles are mounted on a crane by a pile frame, and are transported and positioned by the crane. For this reason, the crane needs to be additionally provided with a power station to power the pile hammer and the pile frame, thereby complicating a hydraulic system of the crane and increasing the running and maintenance costs. And the power station has relatively large volume, so that the turning radius of the crane can be increased, and the throughput is reduced. Disclosure of Invention The application provides a power external infusion pressure system, a crane and a piling method, which are used for solving the problem that a hydraulic system of the crane is complex. In a first aspect, the application provides a power external fluid pressure system, which comprises an oil supply subsystem, a get-off action subsystem and a piling action subsystem, wherein the oil supply subsystem comprises an oil tank, a main pump and a power switching valve, the power switching valve comprises a first working oil port, a second working oil port and a third working oil port, the power switching valve can enable the first working oil port to be switched to be connected with the second working oil port or the third working oil port, an oil inlet of the main pump is connected with the oil tank, an oil outlet of the main pump is connected with the first working oil port, the get-off action subsystem comprises a get-off motor, the get-off motor is connected with the second working oil port, the piling action subsystem comprises a reversing valve group, a leveling cylinder and a ground supporting cylinder, the two third working oil ports are respectively connected with an oil inlet and an oil return port of the reversing valve group, and the leveling cylinder and the ground supporting cylinder are respectively connected with the reversing valve group. The hydraulic oil hydraulic system has the advantages that when the first working oil port is connected with the second working oil port, the main pump is suitable for supplying oil to the lower vehicle motor, so that the lower vehicle system can be driven to execute actions, when the first working oil port is connected with the third working oil port, the main pump can supply oil to the leveling oil cylinder and the ground supporting oil cylinder, so that the pile frame can be driven to execute leveling actions and ground supporting actions, and piling operations can be carried out conveniently. In an optional implementation manner, the power switching valve further comprises a first control oil port, the oil supply subsystem further comprises a servo pump, a pressure reducing valve group and a control valve group, the control valve group comprises a first sub-control valve, an oil inlet of the servo pump is connected to the oil tank, an oil outlet of the servo pump is connected to an oil inlet of the pressure reducing valve group, an oil outlet of the pressure reducing valve group is connected to an oil inlet of the first sub-control valve, and an oil outlet of the first sub-control valve is connected to the first control oil port and used for controlling the power switching valve to act. The hydraulic oil control system has the beneficial effects that the power switching valve can be remotely controlled through the control valve group, and oil supply to the driving action subsystem or the piling action subsystem is switched, so that the control of the power external infusion pressure system is simpler and more convenient, the hydraulic oil after pressure reduction is used as a power source by the first sub-control valve, and the functional integration level of the power external infusion pressure system is also improved. In an alternative embodiment, the oil supply subsystem further includes a main directional valve, the main directional valve includes a fourth working port, an oil outlet of the main pump is connected to an oil inlet of the main directional valve, and the fourth working port is connected to the first working port. The main reversing valve has the beneficial effects that the main reversing valve can switch the flow direction of hydraulic oil and meet the reversing requirement of the getting-off motor. In an alternative embodiment, the main reversing valve further comprises a second control oil port and a third control oil port, the oil supply subsystem further comp