CN210033991U - Variable-frequency hydraulic closed driving system of spiral conveyor for shield machine - Google Patents
Variable-frequency hydraulic closed driving system of spiral conveyor for shield machine Download PDFInfo
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- CN210033991U CN210033991U CN201920757855.7U CN201920757855U CN210033991U CN 210033991 U CN210033991 U CN 210033991U CN 201920757855 U CN201920757855 U CN 201920757855U CN 210033991 U CN210033991 U CN 210033991U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Abstract
The utility model discloses a shield constructs quick-witted screw conveyer's of machine frequency conversion hydraulic pressure closed actuating system, include the hydraulic motor who links to each other with screw conveyer, hydraulic motor is connected with the two-way rotatory constant delivery pump, and the two-way rotatory constant delivery pump is driven by inverter motor, and inverter motor passes through frequency conversion controller and links to each other with the master control room, and hydraulic motor's exit links to each other through the exit of a hydraulic pressure pipeline with the two-way rotatory constant delivery pump respectively, set up the flushing valve group on the hydraulic pressure pipeline and mend the first pressure sensor that the valves of oil and link to each other with the master control room, mend the valves of oil and. The utility model discloses not only effectual reliability, the security of having guaranteed the screw conveyer of shield structure machine in the work progress to and the economic nature of energy-conserving, not only effectual improvement shield structure machine efficiency in the work progress, the effectual construction cost who reduces the enterprise, moreover the effectual economic benefits who improves the enterprise.
Description
Technical Field
The utility model relates to a screw conveyer's actuating system technical field especially indicates shield constructs machine screw conveyer's frequency conversion hydraulic pressure closed actuating system.
Background
The spiral conveyor is a very important part in the earth pressure balance shield machine, and mainly has the function of conveying the dregs, which are cut off by the cutter head of the shield machine and fall into an earth bin, to the belt conveyor through the spiral conveyor, and the working efficiency and reliability of the spiral conveyor directly determine the construction progress. And the screw conveyer drive is heavy load drive, and the drive power is great, and the energy consumption loss is also great. In the past, a three-phase asynchronous fixed-frequency motor is adopted for driving a closed variable pump, then the closed variable pump drives a motor to rotate so as to drive the screw conveyor to rotate, the flow of a system is controlled mainly by adjusting the swing angle of a swash plate of the pump, and the rotating speed of the motor driving the screw conveyor is controlled. The closed variable pump is complex in structure, the failure probability of the system is high, and the variable mechanism of the closed variable pump has relatively high requirement on the cleanliness of the system, so that the failure occurrence rate of the driving mode of driving the closed variable pump by using the three-phase asynchronous fixed-frequency motor is high.
SUMMERY OF THE UTILITY MODEL
Not enough to among the above-mentioned background art, the utility model provides a shield constructs quick-witted screw conveyer's frequency conversion hydraulic pressure closed actuating system has solved current screw conveyer and has used the asynchronous motor drive closed variable pump's of deciding frequently technical problem that the drive mode trouble incidence is high of three-phase.
The technical scheme of the utility model is realized like this: the utility model provides a shield constructs quick-witted screw conveyer's frequency conversion hydraulic pressure closed driving system, includes the hydraulic motor who links to each other with screw conveyer, hydraulic motor is connected with the two-way rotatory constant delivery pump, and the two-way rotatory constant delivery pump is driven by inverter motor, and inverter motor passes through frequency conversion controller and links to each other with the master control room, and hydraulic motor's exit links to each other through the exit of a hydraulic pressure pipeline with the two-way rotatory constant delivery pump respectively, set up the flushing valve group on the hydraulic pressure pipeline and mend the first pressure sensor that the oil valve group reaches and link to each other with the master control room, mend the oil valve. The main control chamber can control the running state of the variable frequency motor according to needs, and then can control the oil pumping efficiency of the bidirectional rotary constant delivery pump, so that the rotating speed of the hydraulic motor is adjusted. Compared with the traditional variable pump, the bidirectional rotary constant delivery pump has the advantages of simple system, low requirement on cleanliness and good stability, and the variable frequency drive can realize stepless speed change, thereby being more energy-saving and efficient.
Furthermore, the flushing valve group comprises a hydraulic control reversing valve connected between the two hydraulic pipelines, two oil inlet control ports of the hydraulic control reversing valve are respectively connected with the two hydraulic pipelines, and an oil outlet of the hydraulic control one-way valve is connected with a cooling oil tank. A part of high-temperature hydraulic oil in the hydraulic pipeline can be discharged through the flushing valve group, and then heat generated in the closed circulation system is taken out. The hydraulic control reversing valve can realize the automatic flushing function, automatically discharges part of high-temperature hydraulic oil on the lower side of the pressure in the hydraulic pipeline, and is simpler to control.
Furthermore, a back pressure valve is arranged between the cooling oil tank and an oil outlet of the hydraulic control reversing valve, and the flushing flow can be accurately controlled by adjusting the back pressure valve.
Furthermore, a pressure measuring shuttle valve is arranged between the two hydraulic pipelines, and the first pressure sensor is connected with the hydraulic pipelines through the pressure measuring shuttle valve. The main control room can adjust the washing flow of backpressure valve according to the data that first pressure sensor detected, and the pressure measurement shuttle valve's setting can guarantee that the pressure that first pressure sensor detected is stable and for the pressure value of the higher side of pressure.
Furthermore, a safety valve is arranged between the oil supplementing valve group and the hydraulic pipeline, the safety valve comprises an oil supplementing one-way valve and a safety overflow valve which are connected in parallel, an oil inlet of the safety valve is connected with the oil supplementing overflow valve, and the oil supplementing overflow valve is connected with an overflow oil tank. The safety valve further ensures the stability of the hydraulic oil pressure in the hydraulic pipeline and also fully ensures the safety of the hydraulic pipeline; the safety of the system is further ensured by the arrangement of the oil-supplementing overflow valve.
Furthermore, the number of the safety valves is two, oil inlets of the two safety valves are connected with the oil supplementing valve group in parallel, and oil outlets of the two safety valves are connected with the two hydraulic pipelines respectively. Set up two relief valves and link to each other with two hydraulic line respectively, fully guaranteed the oil supplementation efficiency, can ensure in time to carry out pressure supplementation to the low pressure side when washing. In addition, when the pressure of one hydraulic pipeline reaches the setting of the safety valve, the safety overflow valve connected with the side is opened to overflow, and then the oil is fed into the hydraulic pipeline at the low pressure side through the oil supplementing one-way valve at the other side, so that the safety valve always overflows the oil at the high pressure side to the low pressure side.
Furthermore, a second pressure sensor is arranged between the oil-supplementing overflow valve and the safety valve, and the second pressure sensor is connected with the main control chamber. The main control room can monitor the oil supply pressure of the oil supplementing valve group in real time, and the oil supply pressure is compared with the pressure monitored by the first pressure sensor, so that the oil supplementing valve group can be controlled to provide a proper amount of hydraulic oil.
The utility model discloses not only effectual reliability, the security of having guaranteed the screw conveyer of shield structure machine in the work progress to and the economic nature of energy-conserving, not only effectual improvement shield structure machine efficiency in the work progress, the effectual construction cost who reduces the enterprise, moreover the effectual economic benefits who improves the enterprise.
Drawings
In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive work.
Fig. 1 is a schematic diagram of the system of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
Embodiment 1, shield constructs quick-witted screw conveyer's frequency conversion hydraulic pressure closed drive system, as shown in fig. 1, including the hydraulic motor 6 who links to each other with screw conveyer, hydraulic motor 6 is connected with two-way rotatory constant delivery pump 1, and two-way rotatory constant delivery pump 1 is driven by inverter motor 2. The variable frequency motor 2 is connected with a main control room through a variable frequency controller, and the main control room can remotely control the variable speed of the variable frequency motor. The inlet and outlet of the hydraulic motor 6 are respectively connected with the inlet and outlet of the bidirectional rotary constant delivery pump 1 through a hydraulic pipeline to form a closed circulation system, and the stepless speed change of the variable frequency motor 2 can realize the stepless speed change by driving the hydraulic motor 6 through the bidirectional rotary constant delivery pump 1. Compared with the traditional variable displacement pump, the bidirectional rotary constant delivery pump 1 has the advantages of simple system, low requirement on cleanliness and good stability, and the variable frequency drive can realize stepless speed change, thereby being more energy-saving and efficient.
In order to ensure that heat in the closed circulation system can be conveniently dissipated, a flushing valve group 4, an oil supplementing valve group 5 and a first pressure sensor 13 connected with a main control chamber are arranged on the hydraulic pipeline, wherein the oil supplementing valve group 5 is connected with the main control chamber. The main control room can control the running state of the variable frequency motor 2 according to the requirement, and then can control the oil pumping efficiency of the bidirectional rotary constant delivery pump 1, thereby adjusting the rotating speed of the hydraulic motor 6. The main control room can also control the oil supplementing valve group 5 to supplement oil to the closed circulation system in time according to the pressure value detected by the first pressure sensor 13.
The flushing valve group 4 comprises a hydraulic control reversing valve 11 connected between two hydraulic pipelines, two oil inlet control ports of the hydraulic control reversing valve 11 are respectively connected with the two hydraulic pipelines, and an oil outlet of the hydraulic control one-way valve 11 is connected with a cooling oil tank 14. Through the flushing valve group 4, a part of high-temperature hydraulic oil in the hydraulic pipeline can be discharged, and then heat generated in the closed circulation system is taken out. The hydraulic control reversing valve 11 can realize an automatic flushing function, the high-pressure side of the two hydraulic pipelines can automatically push the hydraulic control one-way valve 11 to reverse, and then the normally closed hydraulic control reversing valve 11 can realize through flow, partial high-temperature hydraulic oil on the lower side of the pressure in the hydraulic pipelines is discharged to the cooling oil tank 14, and the control is simple and convenient.
Embodiment 2, the variable frequency hydraulic closed driving system of the screw conveyer for the shield machine, a back pressure valve 12 is arranged between the cooling oil tank 14 and an oil outlet of the hydraulic control reversing valve 11, and the flushing flow can be accurately controlled by adjusting the back pressure valve 12.
The other structure of this embodiment is the same as embodiment 1.
The other structure of this embodiment is the same as embodiment 1 or 2.
Embodiment 4, shield constructs quick-witted screw conveyer's of machine frequency conversion hydraulic pressure closed drive system, oil supply valves 5 with be provided with relief valve 7 between the hydraulic line, relief valve 7 is connected with oil supply overflow valve 8 including parallelly connected oil supply check valve 9 and safe overflow valve 3, the oil inlet of relief valve 7, and oil supply overflow valve 8 is connected with overflow oil tank 15. The safety valve 7 further ensures the stability of the hydraulic oil pressure in the hydraulic pipeline and also fully ensures the safety of the hydraulic pipeline; the arrangement of the oil-supplementing overflow valve 8 further ensures the safety of the system.
The other structure of this embodiment is the same as embodiment 1, 2 or 3.
The other structure of this embodiment is the same as embodiment 4.
Embodiment 6, the variable frequency hydraulic closed drive system of the screw conveyer for the shield machine, the second pressure sensor 16 is disposed between the oil-replenishing overflow valve 8 and the safety valve 7, and the second pressure sensor 16 is connected to the main control chamber. The main control room can monitor the oil supply pressure of the oil supplementing valve group 5 in real time, and compare the oil supply pressure with the pressure monitored by the first pressure sensor 13, so that the oil supplementing valve group 5 can be controlled to provide a proper amount of hydraulic oil.
Other structures of this embodiment may be the same as any of embodiments 1 to 5.
The utility model discloses a control method: the main control room controls the variable frequency controller to drive the variable frequency motor 2 to rotate according to the rotating speed requirement of the screw conveyer, the variable frequency motor 2 controls the bidirectional rotary constant delivery pump 1 to supply oil to the hydraulic motor 6, and then the hydraulic motor 6 drives the screw conveyer to rotate.
In the circulating oil supply process of the bidirectional rotary constant delivery pump 1, an oil inlet control port on one side of the hydraulic directional valve 11 is pushed by high-pressure oil in a hydraulic pipeline on the same side to change direction, the oil inlet control port on the other side is communicated with another hydraulic pipeline, and high-temperature hydraulic oil in the hydraulic pipeline flows into a cooling oil tank 14 through the back pressure valve 12.
When the cooling oil tank 14 recovers high-temperature hydraulic oil, the main control chamber starts the oil supplementing valve group 5 to synchronously supplement oil for the two hydraulic pipelines according to the pressure detection of the first pressure sensor 13, and the main control chamber controls the oil supplementing amount of the oil supplementing valve group 5 in real time through the monitoring data of the first pressure sensor 13 and the second pressure sensor 16.
The present invention is not exhaustive and is well known to those skilled in the art.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a shield constructs quick-witted screw conveyer's frequency conversion hydraulic pressure closed actuating system, includes hydraulic motor (6) that link to each other with screw conveyer, its characterized in that: hydraulic motor (6) are connected with two-way rotatory constant delivery pump (1), and two-way rotatory constant delivery pump (1) is driven by inverter motor (2), and inverter motor (2) link to each other with the master control room through frequency conversion controller, and hydraulic motor (6) are imported and exported through a hydraulic pressure pipeline respectively and are linked to each other with the import and export of two-way rotatory constant delivery pump (1), set up flushing valve group (4) and oil supplementing valve group (5) and first pressure sensor (13) that link to each other with the master control room on the hydraulic pressure pipeline, oil supplementing valve group (5) link to each other with the master control room.
2. The variable-frequency hydraulic closed driving system of the spiral conveyor for the shield tunneling machine according to claim 1, characterized in that: the flushing valve group (4) comprises a hydraulic control reversing valve (11) connected between two hydraulic pipelines, two oil inlet control ports of the hydraulic control reversing valve (11) are respectively connected with the two hydraulic pipelines, and an oil outlet of the hydraulic control reversing valve (11) is connected with a cooling oil tank (14).
3. The variable-frequency hydraulic closed driving system of the spiral conveyor for the shield tunneling machine according to claim 2, characterized in that: and a back pressure valve (12) is arranged between the cooling oil tank (14) and an oil outlet of the hydraulic control reversing valve (11).
4. The variable-frequency hydraulic closed driving system of the spiral conveyor for the shield tunneling machine according to claim 3, characterized in that: and a pressure measuring shuttle valve (10) is arranged between the two hydraulic pipelines, and the first pressure sensor (13) is connected with the hydraulic pipelines through the pressure measuring shuttle valve (10).
5. The variable-frequency hydraulic closed driving system of the spiral conveyor for the shield tunneling machine according to any one of claims 1 to 4, characterized in that: the oil supplementing valve group (5) and the hydraulic pipeline are provided with a safety valve (7) therebetween, the safety valve (7) comprises an oil supplementing check valve (9) and a safety overflow valve (3) which are connected in parallel, an oil inlet of the safety valve (7) is connected with an oil supplementing overflow valve (8), and the oil supplementing overflow valve (8) is connected with an overflow oil tank (15).
6. The variable-frequency hydraulic closed driving system of the spiral conveyor for the shield tunneling machine according to claim 5, characterized in that: the oil-supply valve is characterized in that the number of the safety valves (7) is two, oil inlets of the two safety valves (7) are connected with the oil-supply valve bank (5) in parallel, and oil outlets of the two safety valves (7) are connected with the two hydraulic pipelines respectively.
7. The variable-frequency hydraulic closed driving system of the spiral conveyor for the shield tunneling machine according to claim 6, characterized in that: and a second pressure sensor (16) is arranged between the oil supplementing overflow valve (8) and the safety valve (7), and the second pressure sensor (16) is connected with the main control chamber.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920757855.7U CN210033991U (en) | 2019-05-24 | 2019-05-24 | Variable-frequency hydraulic closed driving system of spiral conveyor for shield machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920757855.7U CN210033991U (en) | 2019-05-24 | 2019-05-24 | Variable-frequency hydraulic closed driving system of spiral conveyor for shield machine |
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| CN210033991U true CN210033991U (en) | 2020-02-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107548A (en) * | 2019-05-24 | 2019-08-09 | 中铁工程装备集团有限公司 | The variable frequency hydraulic enclosed drive system and control method of shield machine screw conveyor |
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2019
- 2019-05-24 CN CN201920757855.7U patent/CN210033991U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107548A (en) * | 2019-05-24 | 2019-08-09 | 中铁工程装备集团有限公司 | The variable frequency hydraulic enclosed drive system and control method of shield machine screw conveyor |
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