CN212003788U - Hydraulic system for long-distance split initiation of shield tunneling machine - Google Patents
Hydraulic system for long-distance split initiation of shield tunneling machine Download PDFInfo
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- CN212003788U CN212003788U CN202020465155.3U CN202020465155U CN212003788U CN 212003788 U CN212003788 U CN 212003788U CN 202020465155 U CN202020465155 U CN 202020465155U CN 212003788 U CN212003788 U CN 212003788U
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Abstract
The utility model discloses a hydraulic system for long-distance split starting of a shield machine, which comprises a shield machine hydraulic oil tank, a shield machine hydraulic motor, a relay oil tank and an oil discharge pump; the oil outlet of the hydraulic motor of the shield tunneling machine is communicated with the relay oil tank through an oil return pipeline I, the oil inlet of the oil discharge pump is communicated with the relay oil tank, the oil outlet of the oil discharge pump is communicated with the hydraulic oil tank of the shield tunneling machine through an oil return pipeline II, and the vertical height difference between the hydraulic motor of the shield tunneling machine and the relay oil tank is not more than 30 meters. The utility model discloses a with the little relay tank of shield structure machine hydraulic motor difference in height, oil extraction pump, oil return pipe one, oil return pipe two and shield structure machine hydraulic motor and the cooperation of shield structure machine hydraulic tank, can avoid producing too big backpressure to shield structure machine hydraulic motor, avoid causing the work of overloading of shield structure machine hydraulic motor, prolong the life etc. of hydraulic motor and hydraulic pump.
Description
Technical Field
The utility model relates to a hydraulic equipment field, specifically speaking relate to a hydraulic system that is used for shield constructs long distance components of a whole that can function independently originated.
Background
At present, traffic is developed rapidly as blood for urban development, underground traffic is an important part of urban traffic widening in addition to ground traffic, and subways are produced at the same time. Because urban ground environment is complicated and complicated, in order to excavate underground tunnels under the condition of affecting the earth surface environment as little as possible, the shield machine is widely applied to the construction of subway tunnels as the most advanced tunnel excavation technology at present, because the length of the shield machine is generally about 80 meters, and because of the limitation of a field and an originating wellhead, more and more shield machines adopt split adapter pipelines for originating at present.
The shield machine mainly drives the shield machine to rotate a cutter head of the shield machine, stretch and advance a thrust cylinder, rotate and slag discharge of a screw machine, grouting behind the wall of a grouting pump, splicing segments of a splicing machine and the like through a hydraulic system, so that when the shield machine is started in a split mode at a small wellhead, extension and switching are carried out on all hydraulic pipes besides extension and switching of control cables and the like of the shield machine. Due to the increase of the existing subway intermediate transfer stations, the more and more the transfer pipeline of the shield machine becomes, when the split starting of the shield machine is carried out, the length of the transfer oil pipe exceeds 150 meters, and when the height difference of the upper part and the lower part of the oil pipe exceeds 30 meters, the weight of hydraulic oil in the hydraulic pipe causes the load of a cutter head driving hydraulic motor of the shield machine to increase, so that the overload work of the hydraulic motor is easily caused, the service lives of the hydraulic motor and a hydraulic pump station are influenced, the backpressure is generated on the hydraulic motor of the shield machine, and the problem of pipe disjointing caused by the overlarge backpressure is easily caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a hydraulic system for shield constructs quick-witted long distance components of a whole that can avoid causing shield constructs quick-witted hydraulic motor overload work to produce too big backpressure is provided to shield and constructs quick-witted hydraulic motor.
In order to solve the technical problem, the utility model discloses a following technical scheme: a hydraulic system for long-distance split starting of a shield machine comprises a shield machine hydraulic oil tank, a shield machine hydraulic motor, a relay oil tank and an oil discharge pump;
the oil inlet of the hydraulic motor of the shield tunneling machine is communicated with the hydraulic oil tank of the shield tunneling machine through an oil inlet pipeline, the oil outlet of the hydraulic motor of the shield tunneling machine is communicated with the relay oil tank through an oil return pipeline I, the oil inlet of the oil discharge pump is communicated with the relay oil tank, the oil outlet of the oil discharge pump is communicated with the hydraulic oil tank of the shield tunneling machine through an oil return pipeline II, and the upper and lower height difference of the hydraulic motor of the shield tunneling machine and the relay oil tank is not more than 30 meters.
Further, the upper portion of relaying the oil tank is equipped with liquid level switch one, the lower part of relaying the oil tank is equipped with liquid level switch two, still includes the control unit, liquid level switch one, liquid level switch two and the oil extraction pump respectively with the control unit is connected.
Furthermore, the hydraulic motor of the shield machine is arranged on the trolley No. 1 of the shield machine, and the hydraulic oil tank of the shield machine is arranged on the trolley No. 2 of the shield machine.
Further, the relay oil tank is arranged on a middle plate extending out of the side wall of the shield originating well.
Furthermore, the oil return device further comprises a short connecting pipe, one end of the short connecting pipe is communicated with the first oil return pipeline, the other end of the short connecting pipe is communicated with the second oil return pipeline, and a valve is connected to the short connecting pipe.
The beneficial effects of the utility model are embodied in:
the utility model discloses a with the little relay tank of shield structure machine hydraulic motor difference in height, the oil extraction pump, return oil pipe one, return oil pipe two and shield structure machine hydraulic motor and the cooperation of shield structure machine hydraulic tank, can avoid producing too big backpressure to shield structure machine hydraulic motor, avoid causing shield structure machine hydraulic motor to overload work, thereby solved when the shield structure machine components of a whole that can function independently is originated long-distance switching pipeline connection because hydraulic oil causes the too big problem of backpressure in the middle of the operation processes such as shield structure host computer blade disc hydraulic motor and screw machine hydraulic motor in the pit, reduce the switching pipeline and can effectively reduce hydraulic system trouble because the backpressure causes the pipe disjointed greatly, prolong advantages such as the life of hydraulic motor and hydraulic pump.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
The components in the drawings are labeled as follows: the shield tunneling machine comprises a shield tunneling machine hydraulic oil tank 1, a shield tunneling machine hydraulic motor 2, a relay oil tank 3, an oil discharge pump 4, an oil inlet pipeline 5, an oil return pipeline 6, an oil return pipeline 7, a nipple 8, a control unit 9, a liquid level switch 10, a liquid level switch 11, a shield tunneling machine trolley 1, a shield tunneling machine trolley 13, a shield tunneling machine trolley 2 and a middle plate 14.
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. The embodiments and features of the embodiments in the present application may be combined with each other without conflict. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, "a plurality" means two or more. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
See fig. 1.
The utility model discloses a hydraulic system for shield constructs quick-witted long distance components of a whole that can function independently initiative, including shield constructs quick-witted hydraulic tank 1, shield and constructs quick-witted hydraulic motor 2, relay tank 3 and oil extraction pump 4;
the oil inlet of the hydraulic motor 2 of the shield tunneling machine is communicated with the hydraulic oil tank 1 of the shield tunneling machine through an oil inlet pipeline 5, the oil outlet of the hydraulic motor 2 of the shield tunneling machine is communicated with the relay oil tank 3 through an oil return pipeline 6, the oil inlet of the oil discharge pump 4 is communicated with the relay oil tank 3, the oil outlet of the oil discharge pump 4 is communicated with the hydraulic oil tank 1 of the shield tunneling machine through an oil return pipeline two 7, and the upper and lower height difference of the hydraulic motor 2 of the shield tunneling machine and the relay oil tank 3 is not more than 30 meters.
The utility model is suitable for a components of a whole that can function independently of the high perpendicular drop of long distance is originated, the shield constructs the quick-witted shield body and the 1 st platform truck part of shield structure machine has gone into the well, the shield constructs No. 2 platform truck and follow-up platform truck of machine and still is located well head ground, the hydraulic motor of shield structure machine is located in the pit, the hydraulic tank of shield structure machine is located well head ground, the perpendicular drop of condition of originating is big, hydraulic motor load and hydraulic tank distance overlength, the used hydraulic oil feed of shield structure machine hydraulic system and the condition of time return pipe overlength can appear in this kind of condition, the hydraulic motor that leads to the shield structure machine produces the problem of backpressure and the hydraulic motor overload work of shield.
And the utility model discloses then can solve above-mentioned problem, during the use, shield structure quick-witted hydraulic motor's oil return gets into the relay tank through time return pipeline one, and shield structure quick-witted hydraulic motor and relay tank's upper and lower difference in height is no longer than 30 meters, therefore, time return pipeline one and relay tank can not produce too big backpressure to shield structure quick-witted hydraulic motor, also can not cause shield structure quick-witted hydraulic motor to overload work, and when the hydraulic oil in the relay tank will be full, then can start the oil extraction pump, in sending back the hydraulic oil in the relay tank to shield structure quick-witted hydraulic tank through time return pipeline two, neither influence the use of relay tank, also can guarantee to have sufficient hydraulic oil in the shield structure quick-witted hydraulic tank, guarantee that shield structure machine hydraulic motor normally works.
In an embodiment, a first liquid level switch 10 is disposed on the upper portion of the relay oil tank 3, a second liquid level switch 11 is disposed on the lower portion of the relay oil tank 3, and the oil pump further includes a control unit 9, wherein the first liquid level switch 10, the second liquid level switch 11, and the oil pump 4 are respectively connected to the control unit 9. Liquid level switch one, liquid level switch two is used for detecting in the relay tank hydraulic oil whether reach and set for the liquid level, reach corresponding liquid level switch one then triggers corresponding liquid level switch, when the liquid level of relay tank reaches the upper limit of liquid level switch one setting, trigger liquid level switch one, a liquid level switch signals, the signal is sent for the oil extraction pump by control element, then the oil extraction pump has got the electricity to start, the hydraulic oil in the relay tank is toward subaerial shield structure machine hydraulic tank through two pump sending of return oil pipe way, when the liquid level of relay tank reaches the lower limit of liquid level switch one setting, the transmission process of like-law signal, make oil extraction pump stop work. Design like this, through automated inspection control technology, can control the work of oil extraction pump, the practicality is better. The liquid level switch control element is relatively popular in the market, the acquisition is simple, the designed control circuit is simple, the problems of hydraulic motor failure, disconnection of an oil pipe joint and the like caused by the oil pipe backpressure problem are avoided by adopting the simple and low-cost method, and the liquid level switch control element is suitable for popularization and learning. The liquid level switch is a common liquid level switch, the control unit is a signal processing unit connected between the first liquid level switch and the second liquid level switch and the oil discharge pump, and the control unit comprises but is not limited to a PLC control element or is directly connected to the oil discharge pump through the first liquid level switch and the second liquid level switch.
In one embodiment, the hydraulic motor 2 of the shield machine is arranged on a trolley 12 No. 1 of the shield machine, and the hydraulic oil tank 1 of the shield machine is arranged on a trolley 13 No. 2 of the shield machine. Design like this, shield constructs quick-witted hydraulic motor and follows platform truck No. 1, conveniently carries out the shield and constructs the operation, and shield constructs quick-witted hydraulic tank and follows platform truck No. 2, carries out the transport of hydraulic oil easily.
In one embodiment, the relay tank 3 is disposed on a middle plate 14 extending from a sidewall of the shield originating well. The middle plate is located below the ground, is the middle layer from the ground to the bottom of the well, and is the safety inspection position of the underground layer after the subway station is built. Of course the relay tank 3 may also be arranged at a downhole location. The hydraulic motor of the shield machine is positioned in a shield body of the shield machine and is a common power part driven by hydraulic fluid.
In an embodiment, the oil return device further comprises a short connecting pipe 8, one end of the short connecting pipe 8 is communicated with the first oil return pipeline 6, the other end of the short connecting pipe 8 is communicated with the second oil return pipeline 7, and a valve is connected to the short connecting pipe 8. By the design, when the relay oil tank is normally used, the valve on the nipple can be closed, the nipple is closed, the relay oil tank is normally used, when the relay oil tank is not needed, the valve on the nipple can be opened, the nipple is conducted, and therefore hydraulic oil can bypass the relay oil tank and directly enter the oil return pipeline II.
The utility model discloses can work according to following specific mode:
1. and normally connecting an oil inlet pipeline.
2. And a relay oil tank is arranged at the position of the underground middle plate, an oil return pipeline I of the hydraulic motor of the shield tunneling machine is connected to an oil inlet of the relay oil tank, and an oil return pipeline II of the hydraulic oil tank of the shield tunneling machine is connected to an oil outlet of the oil discharge pump.
3. An oil discharge pump and a liquid level switch I and a liquid level switch II are arranged on the relay oil tank;
4. when the shield machine normally operates, hydraulic oil pumped by a hydraulic pump station of the shield machine is converged into a first oil return pipeline after passing through each driving motor of the shield machine, then flows into a relay oil tank positioned in the middle plate through a first oil return pipeline, starting and stopping actions of an oil discharge pump are correlated through a control unit, when the oil level of the hydraulic oil in the relay oil tank is higher than the upper limit of the liquid level, an oil discharge pump is started, the hydraulic oil in the relay oil tank is pumped into an above-ground hydraulic oil tank of the shield machine through a second oil return pipeline, and when the oil level of the hydraulic oil in the relay oil tank is lower than the lower limit of the liquid level.
It should be understood that the examples and embodiments described herein are for illustrative purposes only and are not intended to limit the present invention, and that various modifications or changes in light thereof will be suggested to persons skilled in the art and are to be included within the spirit and purview of this application.
Claims (5)
1. The utility model provides a hydraulic system that is used for shield structure machine long distance components of a whole that can function independently to begin which characterized in that: the oil pump comprises a shield machine hydraulic oil tank, a shield machine hydraulic motor, a relay oil tank and an oil discharge pump;
the oil inlet of the hydraulic motor of the shield tunneling machine is communicated with the hydraulic oil tank of the shield tunneling machine through an oil inlet pipeline, the oil outlet of the hydraulic motor of the shield tunneling machine is communicated with the relay oil tank through an oil return pipeline I, the oil inlet of the oil discharge pump is communicated with the relay oil tank, the oil outlet of the oil discharge pump is communicated with the hydraulic oil tank of the shield tunneling machine through an oil return pipeline II, and the upper and lower height difference of the hydraulic motor of the shield tunneling machine and the relay oil tank is not more than 30 meters.
2. The hydraulic system for long distance split initiation of a shield tunneling machine of claim 1, wherein: the oil level control device is characterized in that a first liquid level switch is arranged on the upper portion of the relay oil tank, a second liquid level switch is arranged on the lower portion of the relay oil tank, and the oil level control device further comprises a control unit, wherein the first liquid level switch, the second liquid level switch and the oil discharge pump are respectively connected with the control unit.
3. The hydraulic system for long distance split initiation of a shield tunneling machine according to claim 1 or 2, wherein: the hydraulic motor of the shield machine is arranged on the trolley No. 1 of the shield machine, and the hydraulic oil tank of the shield machine is arranged on the trolley No. 2 of the shield machine.
4. The hydraulic system for long distance split initiation of a shield tunneling machine according to claim 1 or 2, wherein: the relay oil tank is arranged on a middle plate extending out of the side wall of the shield originating well.
5. The hydraulic system for long distance split initiation of a shield tunneling machine according to claim 1 or 2, wherein: the oil return pipe is characterized by further comprising a nipple, one end of the nipple is communicated with the first oil return pipe, the other end of the nipple is communicated with the second oil return pipe, and a valve is connected to the nipple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020465155.3U CN212003788U (en) | 2020-04-01 | 2020-04-01 | Hydraulic system for long-distance split initiation of shield tunneling machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020465155.3U CN212003788U (en) | 2020-04-01 | 2020-04-01 | Hydraulic system for long-distance split initiation of shield tunneling machine |
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| CN212003788U true CN212003788U (en) | 2020-11-24 |
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| CN202020465155.3U Active CN212003788U (en) | 2020-04-01 | 2020-04-01 | Hydraulic system for long-distance split initiation of shield tunneling machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107916A (en) * | 2021-03-23 | 2021-07-13 | 北京天地玛珂电液控制系统有限公司 | Liquid return relay system |
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2020
- 2020-04-01 CN CN202020465155.3U patent/CN212003788U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107916A (en) * | 2021-03-23 | 2021-07-13 | 北京天地玛珂电液控制系统有限公司 | Liquid return relay system |
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