CN209875591U - Shield tunneling machine propulsion system with single-piston-rod symmetrical hydraulic oil cylinders connected in series - Google Patents
Shield tunneling machine propulsion system with single-piston-rod symmetrical hydraulic oil cylinders connected in series Download PDFInfo
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- CN209875591U CN209875591U CN201822072386.3U CN201822072386U CN209875591U CN 209875591 U CN209875591 U CN 209875591U CN 201822072386 U CN201822072386 U CN 201822072386U CN 209875591 U CN209875591 U CN 209875591U
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Abstract
A shield tunneling machine propulsion system with single-piston-rod symmetrical hydraulic oil cylinders connected in series mainly comprises a plurality of subarea propulsion systems with the same structure, each subarea propulsion system comprises a servo motor, a fixed displacement pump, a safety valve, a plurality of single-piston-rod symmetrical hydraulic oil cylinders with the same structure and the like, an output shaft of the servo motor is rigidly connected with an input shaft of the fixed displacement pump, a left end oil port of the fixed displacement pump is connected with a left end oil port of a first hydraulic oil cylinder and an oil inlet of the safety valve, a right end oil port of the fixed displacement pump is connected with a right end oil port of a third hydraulic oil cylinder, and oil paths among the first, the second and the third hydraulic oil cylinders are connected in series, so the utility model discloses easily realize the synchronous control of each subarea propulsion hydraulic oil; the hydraulic oil paths of all the propulsion systems are mutually independent, so that the independent control and the coordinated control can be realized, and the flexibility of system control is improved; the direct-drive type volume speed regulating system adopting the pump control cylinder has obvious energy saving effect.
Description
(I) technical field
The utility model relates to a shield constructs entry driving machine hydraulic pressure advancing system belongs to hydraulic transmission technical field.
(II) background of the invention
The shield tunneling machine is a special machine, electricity, liquid and other technologies for underground tunnel engineering construction, is typical multi-system complex electromechanical liquid integrated equipment, and can realize mechanization and automation of tunnel excavation. The hydraulic propulsion system of the shield tunneling machine provides driving force for the shield to advance, the driving force is usually provided by a certain number of hydraulic cylinders distributed along the circumferential direction of the shield, the propulsion system is required to realize accurate synchronous propulsion of multiple cylinders, each group of hydraulic cylinders can be independently controlled to meet the requirements of curve tunneling, deviation correction, independent backspacing during segment assembly and the like, and meanwhile, the pressure and the flow of the propulsion system must be continuously adjustable in real time, so that reasonable propelling force and speed are ensured, and soil pressure balance in the tunneling process is maintained.
The shield propulsion is a typical high-power and high-load working condition, and the installed power of a propulsion system is very high, and the energy consumption is very high. The existing propulsion hydraulic system adopts a valve control mode, so that the throttling loss is large, the energy is wasted, the service life of equipment is influenced, the construction environment is deteriorated, and a plurality of adverse factors are brought. Therefore, how to realize the synchronization and energy-saving control between hydraulic cylinders of the hydraulic propulsion system is a key technical problem in shield tunneling under the condition of ensuring that the propulsion system can finish the tunneling task correctly and efficiently.
Disclosure of the invention
The utility model aims to overcome the problem that exists among the background art shield structure propulsion process and compromise and satisfy the shield structure construction requirement, provide an energy-saving shield structure propulsion hydraulic system who adopts servo motor and constant delivery pump driven direct drive formula volume speed governing, but the reduction of system energy loss by a wide margin, each symmetry single piston rod hydraulic cylinder's oil circuit series connection can realize the synchro control of each subregion propulsion cylinder, the propulsion system control of especially adapted middle-size and small-size shield structure entry driving machine.
The utility model provides a technical scheme that its technical problem adopted:
a shield tunneling machine propulsion system with single-piston-rod symmetrical hydraulic cylinders connected in series comprises a plurality of subarea propulsion systems with the same structure, wherein each subarea propulsion system adopts a servo motor and a constant delivery pump to directly drive a volume speed regulation system for propelling the hydraulic cylinders and comprises a servo motor, a constant delivery pump, a safety valve, a first hydraulic cylinder, a second hydraulic cylinder, a third hydraulic cylinder, a one-way valve, an oil supplementing pump, a motor, an oil tank and the like; an output shaft of the servo motor is rigidly connected with an input shaft of the fixed displacement pump, a left oil port of the fixed displacement pump is respectively connected with a left oil port of the first hydraulic oil cylinder and an oil inlet of the safety valve through oil pipes, a right oil port of the fixed displacement pump is connected with a right oil port of the third hydraulic oil cylinder through oil pipes, the right oil port of the first hydraulic oil cylinder is connected with a left oil port of the second hydraulic oil cylinder through oil pipes, and the right oil port of the second hydraulic oil cylinder is connected with a left oil port of the third hydraulic oil cylinder through oil pipes; the oil outlet of the safety valve is connected with the oil tank through an oil pipe; an oil inlet of the oil supplementing pump is connected with the oil tank through an oil pipe, an oil outlet of the oil supplementing pump is connected with an oil inlet of the one-way valve through an oil pipe, and an oil outlet of the one-way valve is connected to the oil pipe through an oil pipe; the input shaft of the oil replenishing pump is rigidly connected with the motor; the first hydraulic oil cylinder, the second hydraulic oil cylinder and the third hydraulic oil cylinder are a plurality of single-piston-rod symmetrical hydraulic oil cylinders with the same structure; the first, second and third hydraulic cylinders mainly comprise a cylinder body, a left end cover, a piston rod, a right end cover and the like, the left end cover and the right end cover are fixed on the cylinder body through bolts, the piston rod is matched and connected with the cylinder body, the left end cover and the right end cover, the cylinder body is provided with a vent hole and an oil port, the left end cover is provided with the oil port, the air chamber comprises the cylinder body, the left end cover and the piston rod, the oil chamber F, V, Y cavity comprises the cylinder body, the piston rod and the right end cover, and the oil chamber G, W, Z cavity comprises the left end.
The shield tunneling machine propulsion system with the single piston rod and the symmetrical hydraulic oil cylinders connected in series is provided with four subareas.
Compared with the prior art, the utility model, produced beneficial effect is:
the propulsion systems of all the zones are connected in series by adopting single-piston-rod symmetrical hydraulic cylinders, so that the synchronous control of the propulsion hydraulic cylinders of all the zones is easy to realize, and the system is suitable for medium and small shield tunneling machines; and the hydraulic oil paths of the propulsion systems are mutually independent, so that the areas of the propulsion systems can be independently controlled and coordinately controlled, and the flexibility of system control is improved; the volume speed regulating system of the propelling hydraulic oil cylinder is directly driven by the servo motor and the constant delivery pump, so that the energy loss is small and the energy conservation is remarkable; the individual oil source is adopted in each partition of the propulsion system, a small displacement pump can be used for replacing a large displacement pump in the traditional propulsion system, and the hydraulic oil source in each partition only outputs pressure oil adaptive to the working pressure of the partition, so that the system is more energy-saving.
(IV) description of the drawings
Fig. 1 is a single-zone schematic diagram of a shield tunneling machine propulsion system with a single piston rod and symmetrical hydraulic oil cylinders connected in series.
FIG. 2 is a schematic diagram of a section of a propulsion system cylinder of a shield tunneling machine with single piston rods connected in series with symmetrical hydraulic cylinders.
In the figure: 1. the hydraulic cylinder comprises a servo motor, 2, a fixed displacement pump, 3, 4, 7, 9, 11, 12, 14 and 17, an oil pipe, 5, a safety valve, 6, a first hydraulic cylinder, 8, a second hydraulic cylinder, 10, a third hydraulic cylinder, 6-1, a first cylinder body, 6-2, a first left end cover, 6-3, a first piston rod, 6-4, a first right end cover, 8-1, a second cylinder body, 8-2, a second left end cover, 8-3, a second piston rod, 8-4, a second right end cover, 10-1, a third cylinder body, 10-2, a third left end cover, 10-3, a third piston rod, 10-4, a third right end cover, 13, a one-way valve, 15, an oil supplementing pump, 16, a motor and 18, and an oil tank.
(V) detailed description of the preferred embodiments
The present invention will be further described with reference to fig. 1 and the following examples.
As shown in fig. 1, the present invention comprises a plurality of partitioned propulsion systems with the same structure, each fixed displacement pump is used as a separate oil source of the corresponding partitioned propulsion system to provide power, and the hydraulic circuit of each partitioned propulsion system and the hydraulic circuits of other partitioned propulsion systems are mutually independent hydraulic circuits; each subarea propulsion system comprises a servo motor 1, a fixed displacement pump 2, a safety valve 5, a first hydraulic oil cylinder 6, a second hydraulic oil cylinder 8, a third hydraulic oil cylinder 10, a one-way valve 13, an oil supplementing pump 15, a motor 16 and the like; an output shaft of the servo motor 1 is rigidly connected with an input shaft of the fixed displacement pump 2, a left end oil port of the fixed displacement pump 2 is respectively connected with a left end oil port P1 of the first hydraulic oil cylinder 6 and an oil inlet of the safety valve 5 through an oil pipe 3, a right end oil port of the fixed displacement pump 2 is connected with a right end oil port P6 of the third hydraulic oil cylinder 10 through an oil pipe 11, a right end oil port P2 of the first hydraulic oil cylinder 6 is connected with a left end oil port P3 of the second hydraulic oil cylinder 8 through an oil pipe 7, and a right end oil port P4 of the second hydraulic oil cylinder 8 is connected with a left end oil port P5 of the third hydraulic oil cylinder; the oil outlet of the safety valve 5 is connected with an oil tank 18 through an oil pipe 4; an oil inlet of an oil supplementing pump 15 is connected with an oil tank 18 through an oil pipe 17, an oil outlet of the oil supplementing pump 15 is connected with an oil inlet of a one-way valve 13 through an oil pipe 12, and an oil outlet of the one-way valve 13 is connected to the oil pipe 11 through an oil pipe 14; the input shaft of the oil replenishing pump 15 is rigidly connected with the motor 16; the first hydraulic oil cylinder 6, the second hydraulic oil cylinder 8 and the third hydraulic oil cylinder 10 are single-piston-rod symmetrical hydraulic oil cylinders with the same structure.
The propulsion system of the shield tunneling machine with the single-piston-rod symmetrical hydraulic cylinders connected in series comprises a first cylinder body 6-1, a first left end cover 6-2, a first piston rod 6-3, a first right end cover 6-4 and the like, wherein the first left end cover 6-2 and the first right end cover 6-4 are fixed on the first cylinder body 6-1 through bolts, the first piston rod 6-3 is connected with the first cylinder body 6-1, the first left end cover 6-2 and the first right end cover 6-4 in a matching mode, the first cylinder body 6-1 is provided with a vent hole H and an oil port P2, the first left end cover 6-2 is provided with an oil port P1, an air chamber E cavity is formed by the first cylinder body 6-1, the first left end cover 6-2 and the first piston rod 6-3, and an oil chamber F cavity is formed by the first cylinder body 6-1, the first left end cover 6-2 and the, The first piston rod 6-3 and the first right end cover 6-4, and the oil chamber G is composed of the first left end cover 6-2 and the first piston rod 6-3.
The propulsion system of the shield tunneling machine with the single-piston-rod symmetrical hydraulic cylinders connected in series comprises a second hydraulic cylinder 8, 8-1, 8-2, 8-3, 8-4 and the like, wherein the second hydraulic cylinder 8 comprises a second cylinder body 8-1, a second left end cover 8-2, a second piston rod 8-3, a second right end cover 8-4 and the like, the second left end cover 8-2 and the second right end cover 8-4 are fixed on the second cylinder body 8-1 through bolts, the second piston rod 8-3 is connected with the second cylinder body 8-1, the second left end cover 8-2 and the second right end cover 8-4 in a matching mode, the second cylinder body 8-1 is provided with a vent hole H and an oil port P2, the second left end cover 8-2 is provided with an oil port P1, an air chamber U cavity is formed by the second cylinder body 8-1, the second left end cover 8-2 and the second piston rod 8, The second piston rod 8-3 and the second right end cover 8-4, and the oil chamber W cavity is composed of the second left end cover 8-2 and the second piston rod 8-3.
The third hydraulic oil cylinder 10 comprises a third cylinder body 10-1, a third left end cover 10-2, a third piston rod 10-3, a third right end cover 10-4 and the like, the third left end cover 10-2 and the third right end cover 10-4 are fixed on the third cylinder body 10-1 through bolts, the third piston rod 10-3 is connected with the third cylinder body 10-1, the third left end cover 10-2 and the third right end cover 10-4 in a matching mode, the third cylinder body 10-1 is provided with a vent hole H and an oil port P2, the third left end cover 10-2 is provided with an oil port P1, an air chamber X cavity is formed by the third cylinder body 10-1, the third left end cover 10-2 and the third piston rod 10-3, and an oil chamber Y cavity is formed by the third cylinder body 10-1, the third left end cover 10-2 and the third piston rod 10-3, The third piston rod 10-3 and the third right end cover 10-4, and the oil chamber Z cavity is composed of the third left end cover 10-2 and the third piston rod 10-3.
The present embodiment provides four zoned propulsion systems, each with an independent hydraulic circuit.
The working principle of the utility model is as follows:
when the shield tunneling machine is pushed forwards, the servo motors 1 of the partition propulsion systems are electrified to start to drive the fixed displacement pumps 2 to rotate forwards, the fixed displacement pumps 2 suck oil from the Y cavity of the third hydraulic cylinder 10 through oil pipes 11, pressure oil output by the fixed displacement pumps 2 enters the G cavity of the first hydraulic cylinder 6 through oil pipes 3 to push the first piston rods 6-3 of the first hydraulic cylinder 6 to move rightwards, meanwhile, hydraulic oil in the F cavity of the first hydraulic cylinder 6 enters the W cavity of the second hydraulic cylinder 8 through oil pipes 7 to push the second piston rods 8-3 of the second hydraulic cylinder 8 to move rightwards, hydraulic oil in the V cavity of the second hydraulic cylinder 8 enters the Z cavity of the third hydraulic cylinder 10 through oil pipes 9 to push the third piston rods 10-3 of the third hydraulic cylinder 10 to move rightwards, and air in the process enters the E cavity, the U cavity and the G cavity through air holes H respectively, And in the X cavity, the first hydraulic oil cylinder 6, the second hydraulic oil cylinder 8 and the third hydraulic oil cylinder 10 are single-piston-rod oil cylinders with the same and symmetrical structure, so that piston rods of the first hydraulic oil cylinder 6, the second hydraulic oil cylinder 8 and the third hydraulic oil cylinder 10 are pushed to advance synchronously.
When the system pressure exceeds the normal value due to abnormal conditions in the propelling process, the safety valve 5 is opened, and the oil flowing out of the constant delivery pump 2 flows back to the oil tank through the oil pipe 3, the safety valve 5 and the oil pipe 4 to realize unloading.
The pipelines among the first hydraulic oil cylinder 6, the second hydraulic oil cylinder 8 and the third hydraulic oil cylinder 10 are connected in series, so that the synchronous movement of piston rods of all the hydraulic oil cylinders in the subareas is realized; because the servo motors are easy to realize synchronous control, synchronous motion can be realized by controlling each servo motor 1 among the subarea propulsion systems.
In the propelling process of the shield tunneling machine, the flow of the constant delivery pump can be changed only by independently adjusting the input current of each subarea servo motor 1, so that the turning or posture adjustment of the shield tunneling machine can be realized by controlling the propelling speed of the hydraulic oil cylinder in the area.
As shown in figure 2, the propelling hydraulic system is provided with 12 hydraulic oil cylinders, the propelling hydraulic system is divided into A, B, C, D four areas in the cross section direction of the shield tunneling machine, the number of the hydraulic oil cylinders in the four areas is evenly distributed in the circumferential direction, and each area is provided with 3 hydraulic oil cylinders.
When the hydraulic oil cylinders are pushed to retreat, the servo motors 1 of the subarea pushing systems rotate reversely to drive the fixed displacement pumps 2 to rotate reversely, the fixed displacement pumps 2 suck oil from the G cavities of the first hydraulic oil cylinders 6 through the oil pipes 3, pressure oil output by the fixed displacement pumps 2 enters the Y cavities of the third hydraulic oil cylinders 10 to push the third piston rods 10-3 of the third hydraulic oil cylinders 10 to move leftwards, meanwhile, hydraulic oil in the Z cavities of the third hydraulic oil cylinders 10 enters the V cavities of the second hydraulic oil cylinders 8 through the oil pipes 9 to push the second piston rods 8-3 of the second hydraulic oil cylinders 8 to move leftwards, hydraulic oil in the W cavities of the second hydraulic oil cylinders 8 enters the F cavities of the first hydraulic oil cylinders 6 through the oil pipes 7 to push the first piston rods 6-3 of the first hydraulic oil cylinders 6 to move leftwards, so as to realize the synchronous retreat of the piston rods of the first hydraulic oil cylinders 6, the second hydraulic oil cylinders, in the process, air in the cavity E, the cavity U and the cavity X is exhausted through the air hole H.
When each partition pushing hydraulic oil cylinder needs to be retracted independently, the input current of each partition servo motor 1 only needs to be adjusted independently, and the input current of the servo motor corresponding to the non-retracting hydraulic oil cylinder is set to be zero.
When the shield tunneling machine propulsion system stops working, the input current of the servo motor 1 is set to be zero, the output flow of the constant delivery pump 2 is zero, and the hydraulic oil cylinder stops moving.
When the oil liquid of the hydraulic system propelled by the shield tunneling machine leaks, the oil supplementing loop supplements the hydraulic oil to the system, the oil supplementing pump 15 absorbs oil from the oil tank 18 through the oil pipe 17, and the oil supplementing pump supplements the hydraulic oil to the oil pipe 11 through the oil pipe 12, the one-way valve 13 and the oil pipe 14.
The utility model adopts the hydraulic pump to control the direct-drive type volume speed regulating system of the hydraulic oil cylinder, has no throttling loss and has obvious system energy saving; the propulsion system adopts independent hydraulic pumps to provide oil source power for each zone, a small displacement pump is used for replacing a large displacement pump, and the hydraulic oil source of each zone only outputs pressure oil which is adaptive to the working pressure of the zone, so that the system is more energy-saving.
Claims (1)
1. A shield tunneling machine propulsion system with single-piston-rod symmetrical hydraulic oil cylinders connected in series comprises a plurality of subarea propulsion systems with the same structure, wherein each subarea propulsion system adopts a servo motor and a fixed displacement pump to directly drive a volume speed regulation system for propelling the hydraulic oil cylinders and comprises a servo motor (1), a fixed displacement pump (2), oil pipes (3, 4, 7, 9, 11, 12, 14 and 17), a safety valve (5), a first hydraulic oil cylinder (6), a second hydraulic oil cylinder (8), a third hydraulic oil cylinder (10), a one-way valve (13), an oil supplementing pump (15), a motor (16) and an oil tank (18); the method is characterized in that: an output shaft of the servo motor (1) is rigidly connected with an input shaft of the fixed displacement pump (2), a left end oil port of the fixed displacement pump (2) is respectively connected with a left end oil port P1 of the first hydraulic oil cylinder (6) and an oil inlet of the safety valve (5) through an oil pipe (3), a right end oil port of the fixed displacement pump (2) is connected with a right end oil port P6 of the third hydraulic oil cylinder (10) through an oil pipe (11), a right end oil port P2 of the first hydraulic oil cylinder (6) is connected with a left end oil port P3 of the second hydraulic oil cylinder (8) through an oil pipe (7), and a right end oil port P4 of the second hydraulic oil cylinder (8) is connected with a left end oil port P5 of the third hydraulic oil cylinder (10) through an oil pipe (; an oil outlet of the safety valve (5) is connected with an oil tank (18) through an oil pipe (4); an oil inlet of the oil supplementing pump (15) is connected with an oil tank (18) through an oil pipe (17), an oil outlet of the oil supplementing pump (15) is connected with an oil inlet of the one-way valve (13) through an oil pipe (12), and an oil outlet of the one-way valve (13) is connected to the oil pipe (11) through an oil pipe (14); the input shaft of the oil supplementing pump (15) is rigidly connected with the motor (16); the first hydraulic oil cylinder (6), the second hydraulic oil cylinder (8) and the third hydraulic oil cylinder (10) are a plurality of single-piston-rod symmetrical hydraulic oil cylinders with the same structure; the first hydraulic oil cylinder (6) comprises a first cylinder body (6-1), a first left end cover (6-2), a first piston rod (6-3) and a first right end cover (6-4), the first left end cover (6-2) and the first right end cover (6-4) are fixed on the first cylinder body (6-1) through bolts, the first piston rod (6-3) is connected with the first cylinder body (6-1), the first left end cover (6-2) and the first right end cover (6-4) in a matched mode, the first cylinder body (6-1) is provided with a vent hole H and an oil port P2, the first left end cover (6-2) is provided with an oil port P1, an air chamber E cavity is formed by the first cylinder body (6-1), the first left end cover (6-2) and the first piston rod (6-3), and an oil chamber F cavity is formed by the first cylinder body (6-1), The oil chamber G cavity consists of a first left end cover (6-2) and a first piston rod (6-3); the second hydraulic oil cylinder (8) comprises a second cylinder body (8-1), a second left end cover (8-2), a second piston rod (8-3) and a second right end cover (8-4), the second left end cover (8-2) and the second right end cover (8-4) are fixed on the second cylinder body (8-1) through bolts, the second piston rod (8-3) is connected with the second cylinder body (8-1), the second left end cover (8-2) and the second right end cover (8-4) in a matched mode, the second cylinder body (8-1) is provided with a vent hole H and an oil port P2, the second left end cover (8-2) is provided with an oil port P1, an air chamber U cavity is formed by the second cylinder body (8-1), the second left end cover (8-2) and the second piston rod (8-3), and an oil chamber V cavity is formed by the second cylinder body (8-1), The oil chamber W cavity consists of a second left end cover (8-2) and a second piston rod (8-3); the third hydraulic oil cylinder (10) comprises a third cylinder body (10-1), a third left end cover (10-2), a third piston rod (10-3) and a third right end cover (10-4), wherein the third left end cover (10-2) and the third right end cover (10-4) are fixed on the third cylinder body (10-1) through bolts, the third piston rod (10-3) is matched and connected with the third cylinder body (10-1), the third left end cover (10-2) and the third right end cover (10-4), the third cylinder body (10-1) is provided with a vent hole H and an oil port P2, the third left end cover (10-2) is provided with an oil port P1, an air chamber X cavity is formed by the third cylinder body (10-1), the third left end cover (10-2) and the third piston rod (10-3), and an oil chamber Y cavity is formed by the third cylinder body (10-1), A third piston rod (10-3) and a third right end cover (10-4), and the oil chamber Z cavity is composed of a third left end cover (10-2) and a third piston rod (10-3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822072386.3U CN209875591U (en) | 2018-12-11 | 2018-12-11 | Shield tunneling machine propulsion system with single-piston-rod symmetrical hydraulic oil cylinders connected in series |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822072386.3U CN209875591U (en) | 2018-12-11 | 2018-12-11 | Shield tunneling machine propulsion system with single-piston-rod symmetrical hydraulic oil cylinders connected in series |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538559A (en) * | 2018-12-11 | 2019-03-29 | 山东交通学院 | The shield excavation machine propulsion system that the symmetrical hydraulic cylinder of single-piston rod is connected in series |
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2018
- 2018-12-11 CN CN201822072386.3U patent/CN209875591U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538559A (en) * | 2018-12-11 | 2019-03-29 | 山东交通学院 | The shield excavation machine propulsion system that the symmetrical hydraulic cylinder of single-piston rod is connected in series |
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