CN216478093U - Shield tunneling machine pipe sheet assembling hydraulic system adopting hydraulic transformer - Google Patents
Shield tunneling machine pipe sheet assembling hydraulic system adopting hydraulic transformer Download PDFInfo
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- CN216478093U CN216478093U CN202122664077.7U CN202122664077U CN216478093U CN 216478093 U CN216478093 U CN 216478093U CN 202122664077 U CN202122664077 U CN 202122664077U CN 216478093 U CN216478093 U CN 216478093U
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Abstract
The utility model discloses a shield tunneling machine pipe piece assembling hydraulic system adopting a hydraulic transformer, which comprises an oil tank, a motor, a constant-pressure variable pump, a one-way valve, an overflow valve, a two-position two-way electromagnetic directional valve, an energy accumulator, a first hydraulic transformer, a two-position four-way electromagnetic directional valve, a rack oil cylinder, a second hydraulic transformer, a lifting oil cylinder, a third hydraulic transformer, a translation oil cylinder, a fourth hydraulic transformer, a pitching oil cylinder, a fifth hydraulic transformer, a swinging oil cylinder, a sixth hydraulic transformer, an inclined oil cylinder and a safety valve. The hydraulic transformer is applied to the shield machine pipe sheet assembly hydraulic system, the pressure of a hydraulic loop is adjusted by adjusting the discharge capacity of the hydraulic transformer, the pressure loss is reduced, and energy can be recovered and reused; because the system is not provided with a throttling element, the energy transfer efficiency is high, the energy loss in the throttling speed regulation system is avoided, the energy-saving effect is obvious, and the installed power of the hydraulic system is reduced.
Description
Technical Field
The utility model relates to a hydraulic system, in particular to a shield tunneling machine pipe sheet assembly hydraulic system adopting a hydraulic transformer.
Background
The segment erector is one of the key parts of the shield machine and is responsible for segment assembling work. In the shield construction process, along with the excavation, propulsion and mucking of a shield machine, an excavated tunnel needs to be permanently supported by prefabricated concrete segments, and a segment erector is responsible for accurately installing the segments on the surface of the tunnel which is just excavated and fastening the segments through bolts and the like to form a lining capable of bearing stratum pressure. Segment erector has six degrees of freedom usually, snatchs the section of jurisdiction at first, and then sends the section of jurisdiction to preset position through along tunnel axial, radial movement and around the axial gyration of tunnel, then adjusts the section of jurisdiction gesture through pitching, three kinds of gesture adjustment modes of swaing and slope, makes it bond well with preset position.
The segment erector usually weighs several tons, and the empty segment erector descends to the bottom end of the tunnel after segment assembly is completed, so that the gravitational potential energy in the descending process of the empty segment erector is considerable, and the gravitational potential energy in the circumferential rotation and vertical descending processes of the segment erector can be recovered and used for lifting and rotating segments. The existing segment assembly hydraulic system usually adopts a throttling element to adjust pressure and flow, throttling loss exists in the system, and gravity load energy is wasted.
Disclosure of Invention
The technical problem to be solved by the utility model is to provide a shield machine pipe piece assembling hydraulic system adopting a hydraulic transformer aiming at the defects in the prior art, on one hand, when the hydraulic transformer transforms the pressure of a constant voltage network into the pressure required by a load end, the pressure is transformed by adjusting the discharge capacity, and no throttling loss exists; on the other hand, the energy can be recovered and reused, energy conservation and consumption reduction are realized, and the installed power of the hydraulic system is reduced.
In order to solve the technical problem, the utility model provides a shield tunneling machine pipe sheet assembly hydraulic system adopting a hydraulic transformer, which comprises an oil tank, a motor, a constant-pressure variable pump, a one-way valve, an overflow valve, a two-position two-way electromagnetic directional valve, an energy accumulator, a first hydraulic transformer, a two-position four-way electromagnetic directional valve, a rack oil cylinder, a second hydraulic transformer, a lifting oil cylinder, a third hydraulic transformer, a translation oil cylinder, a fourth hydraulic transformer, a pitching oil cylinder, a fifth hydraulic transformer, a swinging oil cylinder, a sixth hydraulic transformer, an inclined oil cylinder and a safety valve, wherein an oil inlet of the constant-pressure variable pump is connected with the oil tank, and an oil outlet of the constant-pressure variable pump is connected with an oil inlet of the one-way valve; an oil outlet of the check valve is connected with an oil inlet of the overflow valve, an oil port P of the two-position two-way electromagnetic directional valve, a high-pressure port U1 of the first hydraulic transformer, an oil inlet P1 of the two-position four-way electromagnetic directional valve, a high-pressure port U2 of the second hydraulic transformer, a right-end oil port of the lifting oil cylinder, a high-pressure port U3 of the third hydraulic transformer, a right-end oil port of the translation oil cylinder, a high-pressure port U4 of the fourth hydraulic transformer, a right-end oil port of the pitching oil cylinder, a high-pressure port U5 of the fifth hydraulic transformer, a right-end oil port of the swinging oil cylinder, a high-pressure port U6 of the sixth hydraulic transformer, a right-end oil port of the tilting oil cylinder and an oil inlet of the safety valve; oil outlets of the overflow valve and the safety valve are connected with an oil tank; the constant-pressure variable pump is connected with the motor; an oil inlet of the constant-pressure variable pump absorbs oil from the oil tank.
And an oil return port R1 of the first hydraulic transformer, an oil return port R2 of the second hydraulic transformer, an oil return port R3 of the third hydraulic transformer, an oil return port R4 of the fourth hydraulic transformer, an oil return port R5 of the fifth hydraulic transformer and an oil return port R6 of the sixth hydraulic transformer are connected with the oil tank.
A load port V1 of the first hydraulic transformer 8 is connected with an oil return port T1 of the two-position four-way electromagnetic directional valve, a load port V2 of the second hydraulic transformer is connected with an oil port at the left end of the lifting oil cylinder, a load port V3 of the third hydraulic transformer is connected with an oil port at the left end of the translation oil cylinder, a load port V4 of the fourth hydraulic transformer is connected with an oil port at the left end of the pitching oil cylinder, a load port V5 of the fifth hydraulic transformer is connected with an oil port at the left end of the swinging oil cylinder, and a load port V6 of the sixth hydraulic transformer is connected with an oil port at the left end of the tilting oil cylinder; and a working oil port A1 of the two-position four-way electromagnetic directional valve is connected with the right end oil port of the rack oil cylinder, and a working oil port B1 of the two-position four-way electromagnetic directional valve is connected with the left end oil port of the rack oil cylinder.
And an oil port of the energy accumulator is connected with an oil port A of the two-position two-way electromagnetic directional valve.
Has the advantages that: the hydraulic transformer is applied to the shield machine pipe sheet assembly hydraulic system, the pressure of a hydraulic loop is adjusted by adjusting the discharge capacity of the hydraulic transformer, the pressure loss is reduced, and energy can be recovered and reused; because the system is not provided with a throttling element, the energy transfer efficiency is high, the energy loss in the throttling speed regulation system is avoided, the energy-saving effect is obvious, and the installed power of the hydraulic system is reduced.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: 1. an oil tank; 2. a motor; 3. a constant pressure variable pump; 4. a one-way valve; 5. an overflow valve; 6. a two-position two-way electromagnetic directional valve; 7. an accumulator; 8. a first hydraulic transformer; 9. a two-position four-way electromagnetic directional valve; 10. a rack oil cylinder; 11. a second hydraulic transformer; 12. a lift cylinder; 13. a third hydraulic transformer; 14. a translation oil cylinder; 15. a fourth hydraulic transformer; 16. a pitching oil cylinder; 17. a fifth hydraulic transformer; 18. a swing oil cylinder; 19. a sixth hydraulic transformer; 20. a safety valve; 21. and (5) inclining the oil cylinder.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the utility model provides a shield tunneling machine segment assembly hydraulic system using a hydraulic transformer, which comprises an oil tank 1, a motor 2, a constant-pressure variable pump 3, a one-way valve 4, an overflow valve 5, a two-position two-way electromagnetic directional valve 6, an energy accumulator 7, a first hydraulic transformer 8, a two-position four-way electromagnetic directional valve 9, a rack oil cylinder 10, a second hydraulic transformer 11, a lifting oil cylinder 12, a third hydraulic transformer 13, a translation oil cylinder 14, a fourth hydraulic transformer 15, a pitching oil cylinder 16, a fifth hydraulic transformer 17, a swinging oil cylinder 18, a sixth hydraulic transformer 19, an inclined oil cylinder 21 and a safety valve 20, wherein an oil inlet of the constant-pressure variable pump 3 is connected with the oil tank 1, and an oil outlet of the constant-pressure variable pump 3 is connected with an oil inlet of the one-way valve 4; an oil outlet of the check valve 4 is connected with an oil inlet of the overflow valve 5, an oil port P of the two-position two-way electromagnetic directional valve 6, a high-pressure port U1 of the first hydraulic transformer 8, an oil inlet P1 of the two-position four-way electromagnetic directional valve 9, a high-pressure port U2 of the second hydraulic transformer 11, a right-end oil port of the lifting oil cylinder 12, a high-pressure port U3 of the third hydraulic transformer 13, a right-end oil port of the translation oil cylinder 14, a high-pressure port U4 of the fourth hydraulic transformer 15, a right-end oil port of the pitching oil cylinder 16, a high-pressure port U5 of the fifth hydraulic transformer 17, a right-end oil port of the swinging oil cylinder 18, a high-pressure port U6 of the sixth hydraulic transformer 19, a right-end oil port of the tilting oil cylinder 21 and an oil inlet of the safety valve 20; oil outlets of the overflow valve 5 and the safety valve 20 are connected with the oil tank 1; the constant-pressure variable pump 3 is connected with the motor 2, and when the constant-pressure variable pump works, the motor 2 is powered on to start, and the constant-pressure variable pump 3 rotates; an oil inlet of the constant-pressure variable pump 3 sucks oil from the oil tank 1.
And an oil return port R1 of the first hydraulic transformer 8, an oil return port R2 of the second hydraulic transformer 11, an oil return port R3 of the third hydraulic transformer 13, an oil return port R4 of the fourth hydraulic transformer 15, an oil return port R5 of the fifth hydraulic transformer 17 and an oil return port R6 of the sixth hydraulic transformer 19 are connected with the oil tank 1.
A load port V1 of the first hydraulic transformer 8 is connected with an oil return port T1 of the two-position four-way electromagnetic directional valve 9, a load port V2 of the second hydraulic transformer 11 is connected with an oil port at the left end of the lifting oil cylinder 12, a load port V3 of the third hydraulic transformer 13 is connected with an oil port at the left end of the translation oil cylinder 14, a load port V4 of the fourth hydraulic transformer 15 is connected with an oil port at the left end of the pitching oil cylinder 16, a load port V5 of the fifth hydraulic transformer 17 is connected with an oil port at the left end of the swinging oil cylinder 18, and a load port V6 of the sixth hydraulic transformer 19 is connected with an oil port at the left end of the tilting oil cylinder 21; the working oil port A1 of the two-position four-way electromagnetic directional valve 9 is connected with the right end oil port of the rack oil cylinder 10, and the working oil port B1 of the two-position four-way electromagnetic directional valve 9 is connected with the left end oil port of the rack oil cylinder 10.
And an oil port of the energy accumulator 7 is connected with an oil port A of the two-position two-way electromagnetic directional valve 6.
The working principle of the utility model is as follows:
when the electric motor starts working, the motor 2 is powered on and started, and the constant-pressure variable pump 3 rotates; an oil inlet of the constant-pressure variable pump 3 sucks oil from the oil tank 1, pressure oil output from an oil outlet of the constant-pressure variable pump enters an oil inlet of the check valve 4 through the oil outlet, and respectively enters an oil inlet of the overflow valve 5, an oil port P of the two-position two-way electromagnetic directional valve 6, a high-pressure port U1 of the first hydraulic transformer 8, an oil inlet P1 of the two-position four-way electromagnetic directional valve 9, a high-pressure port U2 of the second hydraulic transformer 11, a right-end oil port of the lifting cylinder 12, a high-pressure port U3 of the third hydraulic transformer 13, a right-end oil port of the translation cylinder 14, a high-pressure port U4 of the fourth hydraulic transformer 15, a right-end oil port of the pitching cylinder 16, a high-pressure port U5 of the fifth hydraulic transformer 17, a right-end oil port of the swinging cylinder 18, a high-pressure port U6 of the sixth hydraulic transformer 19, a right-end of the tilting cylinder 21 and an oil inlet of the safety valve 20.
When the segment is installed, the fourth hydraulic transformer 15, the fifth hydraulic transformer 17 and the sixth hydraulic transformer 19 are controlled to perform pressure regulation, so that piston rods of the pitch cylinder 16, the swing cylinder 18 and the tilt cylinder 21 are extended and contracted, when the pressures of high-pressure oil ports U4, U5 and U6 of the fourth hydraulic transformer 15, the fifth hydraulic transformer 17 and the sixth hydraulic transformer 19 are higher than the pressures of load ports V4, V5 and V6, the piston rods of the pitch cylinder 16, the swing cylinder 18 and the tilt cylinder 21 are retracted, when the pressures of high-pressure oil ports U4, U5 and U6 of the fourth hydraulic transformer 15, the fifth hydraulic transformer 17 and the sixth hydraulic transformer 19 are lower than the pressures of load ports V4, V5 and V6, the piston rods of the pitch cylinder 16, the swing cylinder 18 and the tilt cylinder 21 are extended, so that the grasping device at the bottom of the segment splicing machine can realize the attitude regulation of the segment through 3 types of pitching, swinging and tilting motions, and adjusting the pressure at the high-pressure oil ports U4, U5 and U6 of the fourth hydraulic transformer 15, the fifth hydraulic transformer 17 and the sixth hydraulic transformer 19 to be equal to the pressure at the load ports V4, V5 and V6. And controlling the third hydraulic transformer 13 to perform pressure adjustment, so that a piston rod of the translation oil cylinder 14 extends and retracts, when the pressure at a high-pressure oil port U3 of the third hydraulic transformer 13 is higher than the pressure at a load port V3, the piston rod of the translation oil cylinder 14 retracts, when the pressure at a high-pressure oil port U3 of the third hydraulic transformer 13 is lower than the pressure at a load port V3, the piston rod of the translation oil cylinder 14 extends out, the position of the segment in the horizontal direction is adjusted, and the pressure at a high-pressure oil port U3 of the third hydraulic transformer 13 is adjusted to be equal to the pressure at a load port V3. Controlling the second hydraulic transformer 11 to perform pressure regulation, so that the piston rod of the lift cylinder 12 extends and retracts, when the pressure at the high-pressure oil port U2 of the second hydraulic transformer 11 is higher than the pressure at the load port V2, the piston rod of the lift cylinder 12 retracts, when the pressure at the high-pressure oil port U2 of the second hydraulic transformer 11 is lower than the pressure at the load port V2, the piston rod of the lift cylinder 12 extends, the lifting and the descending of the segment in the vertical direction are completed, and the pressure at the high-pressure oil port U2 of the second hydraulic transformer 11 is regulated to be equal to the pressure at the load port V2.
When the segment assembling machine is to drive segments to rotate clockwise, the pressure of a high-pressure port U1 of a first hydraulic transformer 8 is adjusted to be higher than the pressure of a load port V1, the left electromagnet of a two-position four-way electromagnetic directional valve 9 is controlled to be electrified to work at the left position, an oil inlet P1 is communicated with a working oil port A1 of a rack oil cylinder 10, an oil return port T1 is communicated with a working oil port B1, the electromagnet of a two-position two-way electromagnetic directional valve 6 is controlled to be electrified, a constant-pressure variable pump 3 and an energy accumulator 7 supply oil to the system together, pressure oil enters a right cavity of the rack oil cylinder 10 through oil ports P1 and A1 of the two-position four-way electromagnetic directional valve 9 and a right end oil port of the rack oil cylinder 10, a rack piston of the rack oil cylinder 10 moves leftwards, hydraulic oil in the left cavity of the rack oil cylinder 10 flows back to an oil tank 1 through the left end oil ports, the oil ports B1 and T1 of the two-position four-way electromagnetic directional valve 9, the load port V1 and an oil return port R1 of the first hydraulic transformer 8, the pipe sheet rotates clockwise to a circumferential designated position under the gear rack transmission side effect. Controlling the electromagnet of the two-position two-way electromagnetic directional valve 6 to be powered off, adjusting the pressure of the high-pressure port U1 of the first hydraulic transformer 8 to be equal to the pressure of the load port V1, and completing the assembling construction of the duct piece. The rotation speed of the pipe sheet is adjusted by adjusting the displacement of the first hydraulic transformer 8.
After the section of jurisdiction is assembled at circumference assigned position, section of jurisdiction erector need follow anticlockwise rotation certain angle and descend to initial position, prepare to grab and take off a section of jurisdiction. The motor 2 is controlled to be powered off, and the constant-pressure variable pump 3 stops working; and controlling the electromagnet of the two-position two-way electromagnetic directional valve 6 to be electrified. The segment erector rotates anticlockwise under the action of gravity moment of the segment erector, a rack piston of the rack oil cylinder 10 is driven to move rightwards through a gear-rack transmission pair, oil in a right cavity of the rack oil cylinder 10 is charged into the energy accumulator 7, and energy recovery is achieved. When the oil pressure in the energy accumulator 7 reaches the set pressure of the overflow valve 5, the electromagnet of the two-position two-way electromagnetic directional valve 6 is controlled to be powered off, and redundant pressure oil flows back to the oil tank through the overflow valve 5. At this time, the oil in the oil tank 1 enters the left cavity of the rack oil cylinder 10 through the oil return port R1 and the load port V1 of the first hydraulic transformer 8, the oil ports T1 and B1 of the two-position four-way electromagnetic directional valve 9, and the left end oil port of the rack oil cylinder 10.
When the segment assembling machine is to drive the segment to rotate anticlockwise, the pressure of a high-pressure port U1 of the first hydraulic transformer 8 is adjusted to be higher than the pressure of a load port V1, the electromagnet of the two-position four-way electromagnetic reversing valve 9 is controlled to be powered off and to work at the right position, the oil inlet P1 is communicated with the working oil port B1, the oil return port T1 is communicated with the working oil port A1, the electromagnet of the two-position two-way electromagnetic reversing valve 6 is controlled to be powered on, the constant-pressure variable pump 3 and the energy accumulator 7 supply oil to the system together, pressure oil enters a left cavity of the rack oil cylinder 10 through oil ports P1 and B1 of the two-position four-way electromagnetic reversing valve 9 and a left end oil port of the rack oil cylinder 10, a rack piston of the rack oil cylinder 10 moves rightwards, and hydraulic oil of the right cavity of the rack oil cylinder 10 passes through a right end oil port, oil ports A1 and T1 of the two-position four-way electromagnetic directional valve 9, a load port V1 and an oil return port R1 of the first hydraulic transformer 8 flow back to the oil tank 1, and a pipe sheet rotates anticlockwise to a circumferential designated position under the action of a rack-and-pinion transmission side effect. And controlling the electromagnet of the two-position two-way electromagnetic directional valve 6 to be powered off, and adjusting the pressure of the high-pressure port U1 of the first hydraulic transformer 8 to be equal to the pressure of the load port V1 to complete the assembling construction of the duct piece.
After the section of jurisdiction is assembled at the circumference assigned position, need rotate certain angle along clockwise and descend to initial position, prepare to grab and take off a section of jurisdiction. The motor 2 is controlled to be powered off, and the constant-pressure variable pump 3 stops working; and controlling the electromagnet of the two-position two-way electromagnetic directional valve 6 to be electrified. The segment erector rotates clockwise under the action of gravity moment of the segment erector, a rack piston of a rack oil cylinder 10 is driven to move leftwards through a gear-rack transmission pair, oil in a left cavity of the rack oil cylinder 10 is charged into an energy accumulator 7, and energy recovery is realized. When the oil pressure in the energy accumulator 7 reaches the set pressure of the overflow valve 5, the electromagnet of the two-position two-way electromagnetic directional valve 6 is controlled to be powered off, and redundant pressure oil flows back to the oil tank 1 through the overflow valve 5. At this time, the oil in the oil tank 1 enters the right cavity of the rack oil cylinder 10 through the oil return port R1 and the load port V1 of the first hydraulic transformer 8, the oil ports T1 and a1 of the two-position four-way electromagnetic directional valve 9, and the oil port at the right end of the rack oil cylinder 10.
According to the operation process, the assembly of all the pipe pieces can be completed.
The set pressure of the safety valve 20 is slightly higher than the working pressure of the hydraulic system, and when the hydraulic system works normally, the safety valve 20 is not opened; when the load suddenly increases and the system pressure rises above the set pressure of the relief valve 20, the relief valve 20 opens to unload.
The shield machine segment assembling hydraulic system adopting the hydraulic transformer replaces throttling regulation with volume regulation, regulates the working pressure of a hydraulic circuit by controlling the discharge capacity of the hydraulic transformer, reduces pressure loss, can recover the gravitational potential energy of the segment assembling machine, is used for segment rotation, realizes energy recovery and reutilization, avoids energy loss in a throttling speed regulation system, has obvious energy-saving effect and reduces the assembling power of the hydraulic system.
The above-described embodiments of the utility model are intended to be illustrative only and are not intended to be limiting, as all changes that come within the scope of or equivalence to the utility model are intended to be embraced therein.
Claims (2)
1. The utility model provides an adopt hydraulic transformer's shield constructs quick-witted section of thick bamboo and assembles hydraulic system which characterized in that: the hydraulic control system comprises an oil tank (1), a motor (2), a constant-pressure variable pump (3), a one-way valve (4), an overflow valve (5), a two-position two-way electromagnetic directional valve (6), an energy accumulator (7), a first hydraulic transformer (8), a two-position four-way electromagnetic directional valve (9), a rack oil cylinder (10), a second hydraulic transformer (11), a lifting oil cylinder (12), a third hydraulic transformer (13), a translation oil cylinder (14), a fourth hydraulic transformer (15), a pitching oil cylinder (16), a fifth hydraulic transformer (17), a swinging oil cylinder (18), a sixth hydraulic transformer (19), an inclined oil cylinder (21) and a safety valve (20), wherein an oil inlet of the constant-pressure variable pump (3) is connected with the oil tank (1), and an oil outlet is connected with an oil inlet of the one-way valve (4); an oil outlet of the check valve (4) is connected with an oil inlet of an overflow valve (5), an oil port P of a two-position two-way electromagnetic directional valve (6), a high-pressure port U1 of a first hydraulic transformer (8), an oil inlet P1 of a two-position four-way electromagnetic directional valve (9), a high-pressure port U2 of a second hydraulic transformer (11), a right-end oil port of a lifting oil cylinder (12), a high-pressure port U3 of a third hydraulic transformer (13), a right-end oil port of a translation oil cylinder (14), a high-pressure port U4 of a fourth hydraulic transformer (15), a right-end oil port of a pitching oil cylinder (16), a high-pressure port U5 of a fifth hydraulic transformer (17), a right-end oil port of a swing oil cylinder (18), a high-pressure port U6 of a sixth hydraulic transformer (19), a right end of an inclined oil cylinder (21) and an oil port of a safety valve (20); oil outlets of the overflow valve (5) and the safety valve (20) are connected with the oil tank (1); the constant-pressure variable pump (3) is connected with the motor (2); an oil inlet of the constant-pressure variable pump (3) sucks oil from the oil tank (1); an oil return port R1 of the first hydraulic transformer (8), an oil return port R2 of the second hydraulic transformer (11), an oil return port R3 of the third hydraulic transformer (13), an oil return port R4 of the fourth hydraulic transformer (15), an oil return port R5 of the fifth hydraulic transformer (17) and an oil return port R6 of the sixth hydraulic transformer (19) are connected with the oil tank (1); a load port V1 of the first hydraulic transformer (8) is connected with an oil return port T1 of the two-position four-way electromagnetic directional valve (9), a load port V2 of the second hydraulic transformer (11) is connected with an oil port at the left end of the lifting oil cylinder (12), a load port V3 of the third hydraulic transformer (13) is connected with an oil port at the left end of the translation oil cylinder (14), a load port V4 of the fourth hydraulic transformer (15) is connected with an oil port at the left end of the pitching oil cylinder (16), a load port V5 of the fifth hydraulic transformer (17) is connected with an oil port at the left end of the swinging oil cylinder (18), and a load port V6 of the sixth hydraulic transformer (19) is connected with an oil port at the left end of the tilting oil cylinder (21); the working oil port A1 of the two-position four-way electromagnetic directional valve (9) is connected with the right end oil port of the rack oil cylinder (10), and the working oil port B1 of the two-position four-way electromagnetic directional valve (9) is connected with the left end oil port of the rack oil cylinder (10).
2. The hydraulic system for assembling the duct pieces of the shield tunneling machine by using the hydraulic transformer according to claim 1, characterized in that: and an oil port of the energy accumulator (7) is connected with an oil port A of the two-position two-way electromagnetic directional valve (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122664077.7U CN216478093U (en) | 2021-11-02 | 2021-11-02 | Shield tunneling machine pipe sheet assembling hydraulic system adopting hydraulic transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122664077.7U CN216478093U (en) | 2021-11-02 | 2021-11-02 | Shield tunneling machine pipe sheet assembling hydraulic system adopting hydraulic transformer |
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| Publication Number | Publication Date |
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| CN216478093U true CN216478093U (en) | 2022-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122664077.7U Active CN216478093U (en) | 2021-11-02 | 2021-11-02 | Shield tunneling machine pipe sheet assembling hydraulic system adopting hydraulic transformer |
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| Country | Link |
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| CN (1) | CN216478093U (en) |
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2021
- 2021-11-02 CN CN202122664077.7U patent/CN216478093U/en active Active
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