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CN-117052736-B - Propulsion hydraulic system of development machine and development machine

CN117052736BCN 117052736 BCN117052736 BCN 117052736BCN-117052736-B

Abstract

The application discloses a propulsion hydraulic system of a development machine and the development machine, which comprise a first oil cylinder, a second oil cylinder, a third oil cylinder, a propulsion oil supply system, an assembly oil supply system and an operation mode switching valve group, wherein the propulsion oil supply system is used for supplying oil in a propulsion operation mode, the assembly oil supply system is used for supplying oil in an assembly operation mode, the operation mode switching valve group is respectively connected with each oil cylinder, the propulsion oil supply system and the assembly oil supply system through pipelines and is used for switching between the propulsion operation mode and the assembly operation mode, the propulsion oil supply system is used for supplying oil to all the oil cylinders to obtain larger propulsion force in the propulsion operation mode, the assembly mode oil supply system is used for supplying oil to only two oil cylinders distributed on two sides in a group of oil cylinders in the assembly operation mode, and the oil cylinders arranged in the middle are used for obtaining a faster oil cylinder expansion speed in a follow-up mode. According to the application, under the condition that the specification of the hydraulic pump is not increased, the expansion speed of the oil cylinder in the assembly mode is improved, the economical efficiency and the operation efficiency of the system can be improved, and meanwhile, the stress of the shoe supporting bottom can be more balanced.

Inventors

  • LIU WEI
  • LONG ZHIXING
  • ZENG DINGRONG
  • Zhou Saiqun
  • ZUO JIAYU
  • YANG YANG
  • GUO TAO

Assignees

  • 中国铁建重工集团股份有限公司

Dates

Publication Date
20260505
Application Date
20230816

Claims (9)

  1. 1. The propulsion hydraulic system of the heading machine comprises a first oil cylinder (32), a second oil cylinder (33) and a third oil cylinder (34), and is characterized by further comprising: the propulsion oil supply system is used for supplying oil in a propulsion operation mode; The assembly oil supply system is used for supplying oil in an assembly operation mode; The operation mode switching valve group is respectively connected with each oil cylinder, a propulsion oil supply system and an assembly oil supply system pipeline and is used for switching between a propulsion operation mode and an assembly operation mode, wherein in the propulsion operation mode, the propulsion oil supply system supplies oil to all the oil cylinders to obtain larger propulsion force of the oil cylinders, in the assembly operation mode, the assembly mode oil supply system only supplies oil to two oil cylinders distributed on two sides in a group of oil cylinders, and the oil cylinders arranged in the middle are driven to obtain faster expansion and contraction speed of the oil cylinders, and the operation mode switching valve group comprises an electromagnetic ball valve (14), a first cartridge valve (15), a first reversing valve (16), a second cartridge valve (17), the oil supply system comprises a first or gate selection valve, a third cartridge valve (21), a second reversing valve (22), a third reversing valve (24), a fourth reversing valve (25), a second or gate selection valve, an eleventh one-way valve (28), a fourth cartridge valve (29), a fifth cartridge valve (30) and a sixth cartridge valve (31), wherein the input end of an electromagnetic ball valve (14) is connected with the output end of the propulsion oil supply system, the output end is respectively connected with a rodless cavity of a first oil cylinder (32), a second oil cylinder (33) and a third oil cylinder (34) after passing through a sixth one-way valve (19), the input end of the first cartridge valve (15) is connected with the output end of the assembly oil supply system, the control end is connected with the P port of the first reversing valve (16), the T port of the first reversing valve (16) is connected with the control end of the second cartridge valve (17), the A port of the first reversing valve (16) is respectively connected with the A port of the ball valve (14) and the output end of the assembly oil supply system through an electromagnetic oil path, the input end of the first reversing valve (16) is connected with the output end of the first cartridge valve (17) is connected with the output end of the first reversing valve (17) The oil supply system comprises a first oil cylinder (32) and a rod cavity of a third oil cylinder (34), wherein the output end of a second cartridge valve (17) is connected with an oil return pipe with a third one-way valve (11), the input end of the third cartridge valve (21) is connected with the output end of an assembly oil supply system, the output ends of the third cartridge valve are respectively connected with pipelines connected with rodless cavities of the first oil cylinder (32) and the third oil cylinder (34), an A port of a second reversing valve (22) is connected with the control end of the third cartridge valve (21), a P port of the second reversing valve is connected with the output end of a first or gate selection valve, a T port of the second reversing valve is connected with the rodless cavities of the first oil cylinder (32) and the third oil cylinder (34) and a P port of a third reversing valve (24), the first input end of the first or gate selection valve is connected with the rodless cavities of the first oil cylinder (32) and the third oil cylinder (34), The P port of the third reversing valve (24) is connected with a pipeline connected with a rodless cavity of a first oil cylinder (32) and a rodless cavity of a third oil cylinder (34), the A port is connected with a rodless cavity of the second oil cylinder (33), the T port is connected with an oil return pipe, the P port of the fourth reversing valve (25) is connected with the output end of the second or gate selecting valve, the A port is connected with the control ends of a fourth cartridge valve (29), a fifth cartridge valve (30) and a sixth cartridge valve (31), the T port is connected with an oil return pipe, the first input end of the second or gate selecting valve is connected with the rodless cavity of the first oil cylinder (32) and the rodless cavity of the third oil cylinder (34) respectively, The oil return pipe is connected to the output end of fifth cartridge valve (30) and sixth cartridge valve (31), the rodless cavity of second hydro-cylinder (33) is connected to the input end of fourth cartridge valve (29), the rodless cavity of second hydro-cylinder (33) and the input end of fourth cartridge valve (29) are connected respectively to the output end of eleventh check valve (28), the rod cavity of second hydro-cylinder (33) and the oil return pipe of taking third check valve (11) are connected respectively to the input end of eleventh check valve (28), the output end of fourth cartridge valve (29) is connected the rod cavity of second hydro-cylinder (33) and the oil return pipe of taking third check valve (11) respectively.
  2. 2. The propulsion hydraulic system of the heading machine according to claim 1, wherein the propulsion oil supply system comprises a second motor (5), a second coupler (6), a propulsion hydraulic pump (7), a second safety valve (8) and a first one-way valve (9), the second motor (5) is in driving connection with the propulsion hydraulic pump (7) through the second coupler (6), and the second safety valve (8) and the first one-way valve (9) are arranged at the output end of the propulsion hydraulic pump (7).
  3. 3. The propulsion hydraulic system of the heading machine according to claim 1, characterized in that the assembly oil supply system comprises a first motor (1), a first coupler (2), an assembly hydraulic pump (3), a first safety valve (4) and a second one-way valve (10), wherein the first motor (1) is in driving connection with the assembly hydraulic pump (3) through the first coupler (2), and the first safety valve (4) and the second one-way valve (10) are arranged at the output end of the assembly hydraulic pump (3).
  4. 4. The propulsion hydraulic system of the heading machine of claim 1 wherein the first or gate selector valve and the second or gate selector valve each employ a shuttle valve.
  5. 5. The propulsion hydraulic system of a heading machine according to claim 1, characterized in that the first or gate selection valve comprises a seventh one-way valve (20) and an eighth one-way valve (23), wherein the input end of the eighth one-way valve (23) is used as the second input end of the first or gate selection valve, the output end of the eighth one-way valve (23) is connected with the output end of the seventh one-way valve (20), and the input end of the seventh one-way valve (20) is used as the first input end of the first or gate selection valve; the second or gate selection valve comprises a ninth one-way valve (26) and a tenth one-way valve (27), wherein the input end of the ninth one-way valve (26) is used as the second input end of the second or gate selection valve, the output end of the ninth one-way valve (26) is connected with the output end of the tenth one-way valve (27), the input end of the tenth one-way valve (27) is used as the first input end of the second or gate selection valve, and the output end of the second or gate selection valve is led out between the ninth one-way valve (26) and the tenth one-way valve (27).
  6. 6. The propulsion hydraulic system of the heading machine according to claim 1, characterized by further comprising an overflow valve (18), wherein an input end of the overflow valve (18) is connected with rod cavities of the first oil cylinder (32) and the third oil cylinder (34), and an output end is connected with an oil return pipe with the third one-way valve (11).
  7. 7. The propulsion hydraulic system of the heading machine according to claim 1, further comprising a fifth one-way valve (13), wherein an input end of the fifth one-way valve (13) is connected to an a port of the electromagnetic ball valve (14), and an output end of the fifth one-way valve is connected to the a port of the first reversing valve (16), a second input end of the first or gate selector valve, and a second input end of the second or gate selector valve, respectively.
  8. 8. The propulsion hydraulic system of the heading machine according to claim 1, further comprising a fourth one-way valve (12), wherein an input end of the fourth one-way valve (12) is connected to an output end of the assembly oil supply system, and an output end is connected to an a port of the first reversing valve (16), a second input end of the first or gate selector valve, and a second input end of the second or gate selector valve, respectively.
  9. 9. A heading machine comprising a propulsion hydraulic system of a heading machine as claimed in any one of claims 1 to 8.

Description

Propulsion hydraulic system of development machine and development machine Technical Field The application relates to the technical field of tunneling equipment, in particular to a hydraulic propulsion system of a tunneling machine and the tunneling machine. Background The shield machine has higher automation degree, construction efficiency and safety, and is widely applied to urban rail transit, urban pipe gallery, urban underpass tunnel and railway and highway tunnel construction. When the shield machine is used for construction, the propulsion system not only provides propulsion force required by forward excavation for equipment, but also can flexibly control the posture of the equipment. The traditional propulsion system is influenced by the pipe piece structure and pipe piece distribution, and the propulsion cylinders are arranged in a double-cylinder or single-double-cylinder mode. In both the propulsion mode and the assembly mode, the single cylinder or the double cylinders can actively feed oil at the same time. However, along with the change of tunnel construction requirements, the propelling cylinders can meet the requirement of segment assembly only by adopting three-cylinder arrangement, namely, three cylinders are connected and combined into a small unit through a shoe supporting base plate. The propulsion system arranged in the three-cylinder mode at present is used for propelling or assembling the segments, and all cylinders are used for uniformly and actively feeding oil, so that the telescopic speed of the cylinders is reduced in the assembling mode, the telescopic speed is low, the segment assembling efficiency is affected, and the economical efficiency of tunneling operation is reduced. Disclosure of Invention The embodiment of the application provides a propulsion hydraulic system of a heading machine, which aims to solve the technical problems of low operation efficiency and low system economy caused by the fact that the conventional propulsion hydraulic system of the heading machine adopts a fixed control mode in a propulsion or assembly operation mode. The technical scheme adopted by the application is as follows: the utility model provides a propulsion hydraulic system of entry driving machine, includes first hydro-cylinder, second hydro-cylinder, third hydro-cylinder, still includes: the propulsion oil supply system is used for supplying oil in a propulsion operation mode; The assembly oil supply system is used for supplying oil in an assembly operation mode; The operation mode switching valve group is respectively connected with each oil cylinder, the propulsion oil supply system and the assembly oil supply system through pipelines and is used for switching between the propulsion operation mode and the assembly operation mode, wherein in the propulsion operation mode, the propulsion oil supply system supplies oil to all the oil cylinders to obtain larger propulsion force of the oil cylinders, in the assembly operation mode, the assembly mode oil supply system supplies oil to only two oil cylinders distributed on two sides in a group of oil cylinders, and the oil cylinders arranged in the middle follow-up mode can obtain higher telescoping speed of the oil cylinders. Further, the propulsion oil supply system comprises a second motor, a second coupler, a propulsion hydraulic pump, a second safety valve and a first one-way valve, wherein the second motor is in driving connection with the propulsion hydraulic pump through the second coupler, and the second safety valve and the first one-way valve are arranged at the output end of the propulsion hydraulic pump. Further, the assembly oil supply system comprises a first motor, a first coupler, an assembly hydraulic pump, a first safety valve and a second one-way valve, wherein the first motor is in driving connection with the assembly hydraulic pump through the first coupler, and the first safety valve and the second one-way valve are arranged at the output end of the assembly hydraulic pump. Further, the operation mode switching valve group comprises an electromagnetic ball valve, a first cartridge valve, a first reversing valve, a second cartridge valve, a first or gate selection valve, a third cartridge valve, a second reversing valve, a third reversing valve, a fourth reversing valve, a second or gate selection valve, an eleventh one-way valve, a fourth cartridge valve, a fifth cartridge valve and a sixth cartridge valve, The input end of the electromagnetic ball valve is connected with the output end of the propulsion oil supply system, the output end of the electromagnetic ball valve is respectively connected with the input end of the first oil cylinder, the second oil cylinder and the rodless cavity of the third oil cylinder after passing through a sixth one-way valve, the input end of the first cartridge valve is connected with the output end of the spliced oil supply system, the control end of the first reversing valve is connect