CN209586824U - A kind of symmetrical hydraulic cylinder series connection propulsion system of shield excavation machine double piston-rod - Google Patents
A kind of symmetrical hydraulic cylinder series connection propulsion system of shield excavation machine double piston-rod Download PDFInfo
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- CN209586824U CN209586824U CN201822071389.5U CN201822071389U CN209586824U CN 209586824 U CN209586824 U CN 209586824U CN 201822071389 U CN201822071389 U CN 201822071389U CN 209586824 U CN209586824 U CN 209586824U
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Abstract
A kind of symmetrical hydraulic cylinder of shield excavation machine double piston-rod is connected in series propulsion system and is mainly made of the identical subregion propulsion system of several structures, each subregion propulsion system includes a servo motor, one constant displacement pump, one safety valve and the symmetrical hydraulic cylinder of the identical double piston-rod of several structures etc., the output shaft of servo motor and the input shaft rigid attachment of constant displacement pump, the left end hydraulic fluid port of constant displacement pump and the left end hydraulic fluid port of the first hydraulic cylinder, the oil inlet of safety valve connects, right end hydraulic fluid port is connect with the right end hydraulic fluid port of third hydraulic cylinder, first, second, oil circuit between third hydraulic cylinder is connected in series, each subregion advancing hydraulic pressure oil cylinder of the utility model is easily achieved synchronously control, the hydraulic circuit of each propulsion system is mutually indepedent, it both can independent control, energy coordinated control again, increase the flexibility of system control；Using the direct drive type volume speed-regulating system of pump control cylinder, energy saving of system is significant.
Description
Technical field
The utility model relates to a kind of shield excavation machine hydraulic propelling systems, belong to hydraulic transmission technology field.
Background technique
Shield excavation machine be it is a kind of be exclusively used in underground tunnel project construction integrate the technologies such as mechanical, electrical, liquid, be a kind of
The typical integrated equipment of multisystem complexity mechanical electronic hydraulic, can be realized mechanization, the automation of tunnel excavation.The liquid of shield excavation machine
Pressure propulsion system provides motive force for shield advance, usually by completing along the circumferentially distributed certain amount hydraulic cylinder of shield,
Ask propulsion system to be not only able to achieve the propulsion of multi-cylinder precise synchronization, and each grouping hydraulic cylinder can be controlled separately with meet curve driving,
Independent rollback when correction and pipe sheet assembling etc. requires, while the pressure of propulsion system and flow must be real-time continuous adjustable, really
Reasonable propulsive force and speed are protected, tunneling process earth pressure balance is maintained.
Shield driving is a kind of typical high-power, heavy load operating condition, and the installed power of propulsion system is very big, and energy consumption is very
It is high.Existing propulsion hydraulic system uses valve control mode, and not only restriction loss is big, wastes energy, affects equipment life, and
It is degrading construction environment, brings many unfavorable factors.Therefore, how to ensure that propulsion system correctly efficiently completes driving task
In the case of, realize that synchronism and Energy Saving Control between hydraulic propelling system hydraulic cylinder are a key technologies in shield driving
Problem.
Summary of the invention
The purpose of the utility model is to overcome take into account to meet shield the problem of shield driving process in background technique
Structure construction requirement provides a kind of energy-saving type shield propulsion liquid of direct drive type volume speed regulation driven using servo motor and constant displacement pump
The oil circuit of pressure system, each symmetric double hydraulic piston rod oil cylinder is connected in series, and has both been able to achieve the synchronous control of each subregion propelling hydraulic cylinder
System, and system energy loss can be greatly reduced, it is very suitable to shield propelling system control.
The technical scheme in the invention for solving the technical problem:
A kind of symmetrical hydraulic cylinder series connection propulsion system of shield excavation machine double piston-rod, including several structures are identical
Subregion propulsion system, each subregion propulsion system includes servo motor, constant displacement pump, safety valve, the first hydraulic cylinder, the second liquid
Compressing cylinder, third hydraulic cylinder, check valve, slippage pump, motor, fuel tank etc.；The input of the output shaft and constant displacement pump of servo motor
The left end hydraulic fluid port of axis rigid attachment, constant displacement pump passes through the oil pipe oil inlet with the left end hydraulic fluid port, safety valve of the first hydraulic cylinder respectively
The right end hydraulic fluid port of mouth connection, constant displacement pump is connect by oil pipe with the right end hydraulic fluid port of third hydraulic cylinder, the right side of the first hydraulic cylinder
End hydraulic fluid port is connect by oil pipe with the left end hydraulic fluid port of the second hydraulic cylinder, and the right end hydraulic fluid port of the second hydraulic cylinder passes through oil pipe and the
The left end hydraulic fluid port of three hydraulic cylinders connects；The oil outlet of safety valve is connect by oil pipe with fuel tank；The oil inlet of slippage pump passes through
Oil pipe is connect with fuel tank, and the oil outlet of slippage pump is connected by the oil inlet of oil pipe and check valve, and the oil outlet of check valve passes through
Oil pipe is connected on oil pipe；The input shaft and motor rigid attachment of slippage pump；First hydraulic cylinder, the second hydraulic cylinder, third
Hydraulic cylinder is the symmetrical hydraulic cylinder of the identical double piston-rod of several structures.
A kind of symmetrical hydraulic cylinder of shield excavation machine double piston-rod is connected in series propulsion system and is provided with four points
Area.
Compared with prior art, generated beneficial effect is the utility model:
The hydraulic cylinder oil circuit of each area's propulsion system is connected in series, it is easy to accomplish the synchronous control of each subregion advancing hydraulic pressure oil cylinder
System；And the hydraulic circuit of each propulsion system is mutually indepedent, and therefore, each Qu Jike independent control of propulsion system, and energy coordinated control,
Increase the flexibility of system control；The volumetric speed control system of advancing hydraulic pressure oil cylinder is directly driven using servo motor and constant displacement pump
System, energy loss is small, obvious energy conservation；Each subregion of propulsion system uses independent oil sources, can be pumped with small displacement and tradition is replaced to promote
Large discharge pump in system, each area's hydraulic oil source only export the pressure oil being adapted with local area operating pressure, and system is more energy saving.
Detailed description of the invention
Fig. 1 is a kind of single area's schematic diagram of symmetrical hydraulic cylinder series connection propulsion system of shield excavation machine double piston-rod.
Fig. 2 is a kind of symmetrical hydraulic cylinder series connection propulsion system hydraulic cylinder subregion of shield excavation machine double piston-rod
Schematic diagram.
In figure: 1. servo motors, 2. constant displacement pumps, 3,4,7,9,11,12,14,17. oil pipes, 5. safety valves, 6. first is hydraulic
Oil cylinder, 8. second hydraulic cylinders, 10. third hydraulic cylinders, 13. check valves, 15. slippage pumps, 16. motors, 18. fuel tanks.
Specific embodiment
With reference to the accompanying drawing 1 and embodiment the present invention will be further described.
As shown in Figure 1, the utility model includes the identical subregion propulsion system of several structures, each constant displacement pump conduct pair
The independent oil sources of subregion propulsion system is answered to provide power, the hydraulic circuit of each subregion propulsion system and other subregion propulsion systems
Hydraulic circuit be mutually independent hydraulic circuit；Each subregion propulsion system includes servo motor 1, constant displacement pump 2, safety valve
5, the first hydraulic cylinder 6, the second hydraulic cylinder 8, third hydraulic cylinder 10, check valve 13, slippage pump 15, motor 16 etc. are constituted；
The input shaft rigid attachment of the output shaft of servo motor 1 and constant displacement pump 2, the left end hydraulic fluid port of constant displacement pump 2 is by oil pipe 3 respectively with the
The oil inlet connection of the left end hydraulic fluid port, safety valve 5 of one hydraulic cylinder 6, the right end hydraulic fluid port of constant displacement pump 2 pass through oil pipe 11 and third liquid
The right end hydraulic fluid port of compressing cylinder 10 connects, and the right end hydraulic fluid port of the first hydraulic cylinder 6 passes through the left end of oil pipe 7 and the second hydraulic cylinder 8
The right end hydraulic fluid port of hydraulic fluid port connection, the second hydraulic cylinder 8 is connect by oil pipe 9 with the left end hydraulic fluid port of third hydraulic cylinder 10；Safety
The oil outlet of valve 5 is connect by oil pipe 4 with fuel tank 18；The oil inlet of slippage pump 15 is connect by oil pipe 17 with fuel tank 18, repairing
The oil outlet of pump 15 is connect by oil pipe 12 with the oil inlet of check valve 13, and the oil outlet of check valve 13 is connected to by oil pipe 14
On oil pipe 11；The input shaft and 16 rigid attachment of motor of slippage pump 15；First hydraulic cylinder 6, the second hydraulic cylinder 8, third liquid
Compressing cylinder 10 is the symmetrical hydraulic cylinder of the identical double piston-rod of structure.
Four subregion propulsion systems are arranged in the present embodiment, and each subregion propulsion system has independent hydraulic circuit.
The working principle of the utility model is as follows:
When shield excavation machine is pushed ahead, the servo motor 1 of each subregion propulsion system must be electrically activated, and drive constant displacement pump 2
It rotates forward, by right chamber oil suction of the oil pipe 11 from third hydraulic cylinder 10, the pressure oil that constant displacement pump 2 exports passes through constant displacement pump 2
Oil pipe 3 enters the left chamber of the first hydraulic cylinder 6, and the piston of the first hydraulic cylinder 6 is pushed to move right, meanwhile, the first hydraulic oil
Hydraulic oil in 6 right chamber of cylinder enters the left chamber of the second hydraulic cylinder 8 by oil pipe 7, pushes the piston of the second hydraulic cylinder 8 to the right
Mobile, the hydraulic oil in 8 right chamber of the second hydraulic cylinder enters the left chamber of third hydraulic cylinder 10 by oil pipe 9, pushes third liquid
The piston of compressing cylinder 10 moves right, since the first hydraulic cylinder 6, the second hydraulic cylinder 8, third hydraulic cylinder 10 are structure phases
With symmetrical double rod cylinder, to push the piston of the first hydraulic cylinder 6, the second hydraulic cylinder 8, third hydraulic cylinder 10
Bar advanced in unison.
When occurring abnormal conditions in progradation leads to system pressure beyond normal value, safety valve 5 is opened, constant displacement pump 2
The oil liquid of outflow flows back to fuel tank through oil pipe 3, safety valve 5 and oil pipe 4, realizes off-load.
Since the pipeline between the first hydraulic cylinder 6, the second hydraulic cylinder 8, third hydraulic cylinder 10 is connected in series, realize
Each hydraulic cylinder piston rod moves synchronously in subregion；Since servo motor is easily achieved synchronously control, each subregion pushes away
It can be achieved with moving synchronously by controlling each servo motor 1 between system.
In shield excavation machine progradation, only need the input current size of separately adjustable each subregion servo motor 1 can
Change the flow of constant displacement pump, so that shield excavation machine turning or posture tune can be realized in the fltting speed for controlling local area hydraulic cylinder
It is whole.
As shown in Fig. 2,12 hydraulic cylinders are arranged in this propulsion hydraulic system altogether, divide in shield excavation machine cross-wise direction
For 4th area A, B, C, D, four area's hydraulic cylinder quantity are in circumferencial direction mean allocation, 3, every area hydraulic cylinder.
When advancing hydraulic pressure oil cylinder retracts, the servo motor 1 of each subregion propulsion system is reversely rotated, and driving constant displacement pump 2 is anti-
To rotation, for constant displacement pump 2 by left chamber oil suction of the oil pipe 3 from the first hydraulic cylinder 6, the pressure oil that constant displacement pump 2 exports enters third
The right chamber of hydraulic cylinder 10 pushes the piston of third hydraulic cylinder 10 to be moved to the left, meanwhile, in 10 left chamber of third hydraulic cylinder
Hydraulic oil enters the right chamber of the second hydraulic cylinder 8 by oil pipe 9, pushes the piston of the second hydraulic cylinder 8 to be moved to the left, the second liquid
Hydraulic oil in 8 left chamber of compressing cylinder enters the right chamber of the first hydraulic cylinder 6 by oil pipe 7, pushes the piston of the first hydraulic cylinder 6
It is moved to the left, so that the piston rod of the first hydraulic cylinder 6 of realization, the second hydraulic cylinder 8, third hydraulic cylinder 10 is synchronized and retracted.
When each subregion advancing hydraulic pressure oil cylinder need to individually retract, separately adjustable each 1 input current of subregion servo motor is only needed
Size, the input current for the servo motor corresponding to hydraulic cylinder that do not retract, which is set as zero, can be realized.
When shield excavation machine propulsion system stops working, zero is set by 1 input current of servo motor, constant displacement pump 2 is defeated
Outflow is zero, hydraulic cylinder stop motion.
When shield excavation machine propulsion hydraulic system oil liquid leaks, hydraulic oil is supplemented from feed circuit to system, is mended
Oil pump 15 is supplemented by oil pipe 12, check valve 13, oil pipe 14 into oil pipe 11 hydraulic by the oil suction from fuel tank 18 of oil pipe 17
Oil.
The utility model is without restriction loss using the direct drive type volume speed-regulating system of hydraulic pump control hydraulic cylinder
System obvious energy conservation；Each subregion of propulsion system provides oil sources power using independent hydraulic pump, pumps substitution large discharge pump with small displacement, respectively
Area's hydraulic oil source only exports the pressure oil being adapted with local area operating pressure, and system is more energy saving.
Claims (2)
1. a kind of symmetrical hydraulic cylinder series connection propulsion system of shield excavation machine double piston-rod, including several structures are identical
Subregion propulsion system, each subregion propulsion system include servo motor (1), constant displacement pump (2), oil pipe (3,4,7,9,11,12,14,
17), safety valve (5), the first hydraulic cylinder (6), the second hydraulic cylinder (8), third hydraulic cylinder (10), check valve (13), benefit
Oil pump (15), motor (16), fuel tank (18)；It is characterized by: the input shaft of the output shaft of servo motor (1) and constant displacement pump (2)
Rigid attachment, the left end hydraulic fluid port of constant displacement pump (2) pass through oil pipe (3) left end hydraulic fluid port, safety valve with the first hydraulic cylinder (6) respectively
(5) the right end hydraulic fluid port of oil inlet connection, constant displacement pump (2) is connected by the right end hydraulic fluid port of oil pipe (11) and third hydraulic cylinder (10)
It connects, the right end hydraulic fluid port of the first hydraulic cylinder (6) is connect by oil pipe (7) with the left end hydraulic fluid port of the second hydraulic cylinder (8), the second liquid
The right end hydraulic fluid port of compressing cylinder (8) is connect by oil pipe (9) with the left end hydraulic fluid port of third hydraulic cylinder (10)；Safety valve (5) goes out
Hydraulic fluid port is connect by oil pipe (4) with fuel tank (18)；The oil inlet of slippage pump (15) is connect by oil pipe (17) with fuel tank (18), is mended
The oil outlet of oil pump (15) is connect by oil pipe (12) with the oil inlet of check valve (13), and the oil outlet of check valve (13) passes through oil
Pipe (14) is connected on oil pipe (11)；The input shaft and motor (16) rigid attachment of slippage pump (15)；First hydraulic cylinder (6),
Second hydraulic cylinder (8), third hydraulic cylinder (10) are the symmetrical hydraulic cylinder of the identical double piston-rod of several structures.
2. propulsion system is connected in series in the symmetrical hydraulic cylinder of a kind of shield excavation machine double piston-rod according to claim 1,
It is characterized by: each subregion propulsion system directly drives the volumetric speed control of advancing hydraulic pressure oil cylinder using servo motor and constant displacement pump
System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822071389.5U CN209586824U (en) | 2018-12-11 | 2018-12-11 | A kind of symmetrical hydraulic cylinder series connection propulsion system of shield excavation machine double piston-rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822071389.5U CN209586824U (en) | 2018-12-11 | 2018-12-11 | A kind of symmetrical hydraulic cylinder series connection propulsion system of shield excavation machine double piston-rod |
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| Publication Number | Publication Date |
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| CN209586824U true CN209586824U (en) | 2019-11-05 |
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| CN201822071389.5U Active CN209586824U (en) | 2018-12-11 | 2018-12-11 | A kind of symmetrical hydraulic cylinder series connection propulsion system of shield excavation machine double piston-rod |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538558A (en) * | 2018-12-11 | 2019-03-29 | 山东交通学院 | A kind of symmetrical hydraulic cylinder series connection propulsion system of shield excavation machine double piston-rod |
-
2018
- 2018-12-11 CN CN201822071389.5U patent/CN209586824U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538558A (en) * | 2018-12-11 | 2019-03-29 | 山东交通学院 | A kind of symmetrical hydraulic cylinder series connection propulsion system of shield excavation machine double piston-rod |
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