CN117167351B - Shield tunneling machine interlocking hydraulic system, method for operating same and mining shield tunneling machine - Google Patents
Shield tunneling machine interlocking hydraulic system, method for operating same and mining shield tunneling machineInfo
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- CN117167351B CN117167351B CN202311269580.XA CN202311269580A CN117167351B CN 117167351 B CN117167351 B CN 117167351B CN 202311269580 A CN202311269580 A CN 202311269580A CN 117167351 B CN117167351 B CN 117167351B
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Abstract
本公开涉及一种盾构机互锁液压系统、操作其的方法及矿用盾构机。所述液压系统包括锚杆支护系统操作阀组和台车操纵系统操作阀组，并且，所述液压系统通过换向阀控制所述液压系统的主控油路选择性地与所述锚杆支护系统操作阀组或所述台车操纵系统操作阀组连通从而使得台车操纵系统与锚杆支护系统互锁，并且，所述主控油路由油泵从油箱供油至所述换向阀。本公开实现了台车操纵系统与锚杆支护系统的互锁，提高了系统的安全性和可靠性。
This disclosure relates to an interlocked hydraulic system for a tunnel boring machine (TBM), a method for operating it, and a mining TBM. The hydraulic system includes an operating valve group for an anchor bolt support system and an operating valve group for a trolley control system. The hydraulic system selectively connects its main control oil circuit to either the anchor bolt support system operating valve group or the trolley control system operating valve group via a directional valve, thereby interlocking the trolley control system with the anchor bolt support system. The main control oil circuit supplies oil from the oil tank to the directional valve via an oil pump. This disclosure achieves interlocking between the trolley control system and the anchor bolt support system, improving the system's safety and reliability.
Description
Technical Field
The disclosure relates to the technical field of hydraulic systems of mining shield machines, in particular to a shield machine interlocking hydraulic system, a method for operating the same and a mining shield machine.
Background
At present, the supporting work of the mine shield machine after the tunnel is tunneled is an essential step in the tunnel tunnelling construction, and is also a hard, complex and high-risk work. The main reason is that the working face is severely unbalanced, the working face is tunneled only for one third of the whole travel, and a plurality of roof bolters are required to work simultaneously to solve the problem. The bolting is a particularly complex operation, and the time for each bolting per stroke varies. Therefore, the interlocking of the trolley of the shield pulling machine and the anchor rod supporting system and the interlocking of each anchor rod machine are very important.
In the mining shield tunneling machine system in the field, the anchoring machine is fixed on the trolley, and when the cutter head is pushed by cutting, the trolley is fixed, and the anchoring machine starts to support. When the cutting is completed, the trolley is not allowed to move when the anchor rod support system does not support all anchor rods, and can be pulled when all anchor rod support is completed.
The prior art cannot realize the functions of interlocking a safe and reliable pull shield machine trolley and an anchor bolt support system, interlocking between each anchor rod machine and the like, and the functions are the key of the 'dig-anchor unbalance' of the problem.
Disclosure of Invention
In view of the above, it is an object of the present disclosure to provide a shield machine interlock hydraulic system, a method of operating the same, and a mining shield machine that address or at least alleviate one or more of the above-identified and other problems with the prior art.
In order to achieve the foregoing object, a first aspect of the present disclosure provides a shield machine interlocking hydraulic system, wherein the hydraulic system includes an anchor support system operation valve group and a trolley operation system operation valve group, and the hydraulic system controls a main control oil passage of the hydraulic system to selectively communicate with the anchor support system operation valve group or the trolley operation system operation valve group through a reversing valve so that the trolley operation system is interlocked with the anchor support system, and the main control oil passage is supplied with oil from an oil tank to the reversing valve by an oil pump.
In the hydraulic system as described above, optionally, the anchor support system operation valve group includes a first anchor support system operation valve group and a second anchor support system operation valve group, the trolley operation system operation valve group includes a trolley system operation valve group and a trolley raising system operation valve group, the reversing valve includes a first reversing valve and a second reversing valve, the hydraulic system controls the main control oil circuit to selectively communicate with the first anchor support system operation valve group or the trolley system operation valve group through the first reversing valve, and the second reversing valve controls the main control oil circuit to selectively communicate with the second anchor support system operation valve group or the trolley raising system operation valve group.
In the hydraulic system as described above, optionally, the hydraulic system has a feedback oil passage in which a control valve is provided, the feedback oil passage being communicated to the control valve from the first anchor support system operating valve group, the second anchor support system operating valve group, the trolley system operating valve group, and the trolley raising system operating valve group, respectively, the control valve controlling the feedback oil passage to be selectively communicated with the oil pump or the oil tank.
In the hydraulic system as described above, optionally, the signals are fed back to the main control room separately after all the roof bolters of the first bolt support system operation valve group are finished, the signals are fed back to the main control room separately after all the roof bolters of the second bolt support system operation valve group are finished, and the pulling trolley and the trolley lifting action can be performed after all the signals are collected.
In the hydraulic system as described above, optionally, the first reversing valve and the second reversing valve are three-position four-way reversing valves, and the control valve is a two-position four-way manual valve.
In the hydraulic system as described above, optionally, the hydraulic system includes a first button for controlling the left position of the first reversing valve and a second button for controlling the left position of the second reversing valve, and the hydraulic system sends a feedback signal to the main control chamber when the left positions of the first reversing valve and the second reversing valve are deenergized.
In the hydraulic system as described above, optionally, the main control oil circuit is connected with a first hydraulic control check valve set and a second hydraulic control check valve set, the first reversing valve respectively controls the first anchor rod support system operating valve set and the trolley system operating valve set through the first hydraulic control check valve set, and the second reversing valve respectively controls the second anchor rod support system operating valve set and the trolley height adjusting system operating valve set through the second hydraulic control check valve set.
In the hydraulic system, the first hydraulic check valve group comprises a hydraulic check valve used for controlling the first anchor rod support system operation valve group and a hydraulic check valve used for controlling the trolley system operation valve group, and the second hydraulic check valve group comprises a hydraulic check valve used for controlling the second anchor rod support system operation valve group and a hydraulic check valve used for controlling the trolley heightening system operation valve group.
In order to achieve the foregoing object, a second aspect of the present disclosure provides a method of operating the hydraulic system as described in the foregoing first aspect, wherein, when the first anchor support system operating valve group, the second anchor support system operating valve group, the pull-up trolley system operating valve group, and the trolley raising system operating valve group have no feedback oil, the oil pump supplies oil to the first reversing valve and the second reversing valve at a standby pressure, and, in the method:
when the bolter of the first anchor bolt support system operation valve group needs to work, the left position of the first reversing valve is electrified, pilot oil liquid is controlled to reversely open the left position of the first hydraulic control one-way valve group through the left position of the first reversing valve, hydraulic oil of the main control oil way flows to the first anchor bolt support system operation valve group through the first hydraulic control one-way valve group, and when the first anchor bolt support system operation valve group acts, the bolter of the first anchor bolt support system operation valve group has corresponding action output;
When the bolter of the second anchor bolt support system operation valve group needs to work, the left position of the second reversing valve is electrified, pilot oil liquid is controlled to reversely open through the left position of the second reversing valve, hydraulic oil in the main control oil way flows to the second anchor bolt support system operation valve group through the second hydraulic control one-way valve group, and when the second anchor bolt support system operation valve group acts, the bolter of the second anchor bolt support system operation valve group has corresponding action output;
when the operation valve group of the trolley system needs to work, the right position of the first reversing valve is electrified, pilot oil passes through the right position of the first hydraulic control one-way valve group of the first reversing valve to be reversely opened, main oil way hydraulic oil flows to the operation valve group of the trolley system through the first hydraulic control one-way valve group, and when the operation valve group of the trolley system acts, the trolley system correspondingly acts and outputs;
When the trolley heightening system operation valve group needs to work, the right position of the second reversing valve is powered on, pilot oil passes through the right position of the second hydraulic control one-way valve group of the second reversing valve and is reversely opened, main oil way hydraulic oil flows to the trolley heightening system operation valve group through the second hydraulic control one-way valve group, and when the trolley heightening system operation valve group acts, the trolley heightening system has corresponding action output;
When an emergency occurs, the control valve is not pressed down, the first anchor rod support system operation valve bank, the second anchor rod support system operation valve bank, the trolley system operation valve bank or the trolley heightening system operation valve bank are operated, feedback oil is fed back to the oil pump through the control valve, so that the pressure of the oil pump can change along with the change of the feedback pressure, when an emergency occurs, the control valve is pressed down instantly, the feedback oil of the first anchor rod support system operation valve bank, the second anchor rod support system operation valve bank, the trolley system operation valve bank or the trolley heightening system operation valve bank is cut off, and the protection effect is achieved, and
When the first button is pulled up, the left position of the first reversing valve is powered on, the engine oil path of the anchor rod of the first anchor rod supporting system operating valve bank is connected, the anchor rod machine of the first anchor rod supporting system operating valve bank works, when the anchor rod is completely beaten by the first anchor rod supporting system operating valve bank, an operator presses the first button, the left position of the first reversing valve is powered off, meanwhile, a feedback signal is fed back to a main control room, a main operator knows that the anchor rod station of the first anchor rod supporting system operating valve bank is powered on, when the second button is pulled up, the left position of the second reversing valve is powered on, the anchor rod machine of the second anchor rod supporting system operating valve bank works, when the second anchor rod supporting system operating valve bank is completely beaten, the second button is pressed down, the left position of the second anchor rod supporting system operating valve bank is completely beaten, the second anchor rod supporting system operating valve station is completely powered off, and the feedback signal is fed back to the main control room when the second anchor rod supporting system operating valve bank is completely beaten off, and the feedback signal is fed back to the main control room simultaneously.
In order to achieve the foregoing object, a third aspect of the present disclosure provides a mining shield machine having the shield machine interlock hydraulic system according to any one of the foregoing first aspects.
The invention provides a shield machine interlocking hydraulic system, a method for operating the same and a mining shield machine, wherein a reversing valve is used for controlling reverse opening of a hydraulic control one-way valve group, and interlocking between a trolley control system and an anchor rod support system is realized by utilizing the interlocking function between the left position and the right position of the reversing valve group, so that the safety of the system is improved, and the reliability of the system is increased.
Drawings
The disclosure will be more apparent with reference to the accompanying drawings. It is to be understood that these drawings are solely for purposes of illustration and are not intended as a definition of the limits of the present disclosure. In the figure:
FIG. 1 is a schematic diagram of an embodiment of a shield machine interlock hydraulic system of the present disclosure, and
FIG. 2 is a schematic diagram of the structure of a button in one embodiment of the shield machine interlock hydraulic system of the present disclosure.
The reference numerals are 1-motor, 2-oil pump, 3-first reversing valve, 4-first hydraulic control one-way valve set, 5-second reversing valve, 6-second hydraulic control one-way valve set, 7-control valve, 8-first anchor bolt support system operation valve set, 9-trolley system operation valve set, 10-second anchor bolt support system operation valve set, 11-trolley heightening system operation valve set, 12-first button and 13-second button.
Detailed Description
With reference to the drawings and specific embodiments, the shield machine interlock hydraulic system, the method of operating the same, and the structure, composition, features, and advantages of the mining shield machine according to the present disclosure will be described below by way of example, however, all descriptions should not be used to form any limitation of the present disclosure.
Furthermore, to the extent that any individual feature described or implied in the embodiments referred to herein, or any individual feature shown or implied in the figures, the disclosure still allows for any combination or deletion of any combination or permutation between these features (or their equivalents) without any technical hurdle, and further embodiments according to the disclosure should be considered to be within the scope of the disclosure.
It should be noted that the terms like "disposed" and the like should be understood in a broad sense, and for example, they may be fixedly connected, detachably connected, or integrally formed, and may be directly connected, or indirectly connected through an intermediate medium. Unless otherwise specifically defined, it will be apparent to those skilled in the art that the specific meaning of the terms in this disclosure can be understood as appropriate.
Furthermore, the terms "first," "second," and the like, may refer to different or the same object. For descriptive purposes only and not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. The meaning of "a plurality of" and the like is at least two and more, unless explicitly defined otherwise.
Fig. 1 is a schematic structural diagram of an embodiment of a shield machine interlocking hydraulic system of the present disclosure.
As shown in fig. 1, the shield machine interlocking hydraulic system may include a motor 1, an oil pump 2, a first reversing valve 3, a first hydraulic control check valve set 4, a second reversing valve 5, a second hydraulic control check valve set 6, a control valve 7, a first anchor support system operation valve set 8, a trolley system operation valve set 9, a second anchor support system operation valve set 10, and a trolley height adjustment system operation valve set 11.
The reversing valves 3 and 5 may be directional control valves having two or more flow patterns and two or more oil ports, and may be valves capable of realizing circulation, cutting and reversing of hydraulic oil and realizing sequential action control. As can be seen from the figure, in this embodiment, the first reversing valve 3 and the second reversing valve 5 are three-position four-way reversing valves, and the control valve 7 is a two-position four-way manual valve.
In the embodiment shown in fig. 1, the hydraulic system controls the main control oil circuit of the hydraulic system through the reversing valves, i.e. the first reversing valve 3 and the second reversing valve 5, while being able to selectively communicate with the anchor handling system operating valve group or the trolley handling system operating valve group to interlock the trolley handling system with the anchor handling system.
In this example, the anchor support system operating valve block comprises a first anchor support system operating valve block 8 and a second anchor support system operating valve block 10, the trolley operating system operating valve block comprising a trolley system operating valve block 9 and a trolley raising system operating valve block 11. Multiple bolters may be included in each bolting system.
Specifically, the hydraulic system controls the main control oil way to selectively communicate with the first anchor rod support system operation valve group 8 or the trolley system operation valve group 9 through the first reversing valve 3, and the second reversing valve 5 controls the main control oil way to selectively communicate with the second anchor rod support system operation valve group 10 or the trolley height adjustment system operation valve group 11 through the second hydraulic control one-way valve group 6.
The interlocking of the trolley operating system and the anchor bolt supporting system is realized by the left and right interlocking of the hydraulic control check valve groups 4 and 6. In the actual working process, all the roof bolters of the first anchor bolt support system operation valve group 8 are respectively and independently finished with signals fed back to the main control room, all the roof bolters of the second anchor bolt support system operation valve group 10 are respectively and independently finished with signals fed back to the main control room, and the pulling trolley and the trolley can be lifted after all the signals are collected, so that the purpose that oil supply is not allowed by the trolley control system as long as one roof bolter does not finish support in a plurality of anchor bolt support systems can be achieved. The left and right interlocking of the hydraulic control one-way valve groups 4 and 6 is particularly realized in that when the left position is powered on, the right position cannot be powered on, namely, in the case that the anchor bolt support system is powered on, the trolley control system cannot be powered on.
In alternative embodiments, the primary steering room may be located on a trolley or on the ground.
As can be seen from fig. 1, the main oil is supplied from a tank to a first reversing valve 3 and a second reversing valve 5 by a motor 1 driving an oil pump 2.
Specifically, the main control oil way is connected with a first hydraulic control check valve set 4 and a second hydraulic control check valve set 6, the first reversing valve 3 respectively controls the first anchor rod support system operation valve set 8 and the trolley system operation valve set 9 through the first hydraulic control check valve set 4, and the second reversing valve 5 respectively controls the second anchor rod support system operation valve set 10 and the trolley height-adjusting system operation valve set 11 through the second hydraulic control check valve set 6. The first hydraulic check valve set 4 comprises a hydraulic check valve for controlling the first anchor rod support system operation valve set 8 and a hydraulic check valve for controlling the trolley system operation valve set 9, and the second hydraulic check valve set 6 comprises a hydraulic check valve for controlling the second anchor rod support system operation valve set 10 and a hydraulic check valve for controlling the trolley heightening system operation valve set 11.
Here, the main control oil passage is shown by a solid line in the figure. The hydraulic system also has a feedback oil circuit in which a control valve 7 is provided, in this embodiment the control valve 7 is a two-position four-way manual valve, the feedback oil circuit being communicated to the control valve 7 from the first anchor support system operating valve group 8, the second anchor support system operating valve group 10, the trolley system operating valve group 9 and the trolley raising system operating valve group 11, respectively, the control valve 7 controlling the feedback oil circuit to be selectively communicated with the oil pump 2 or a tank located at the bottom. The control valve 7 controls and regulates the flow direction, pressure and flow of oil in the hydraulic system of the disclosure, so that the oil pump 2 and the driving motor 1 thereof obtain the movement direction, hydraulic pressure, movement speed and the like required by the hydraulic oil.
Here, the feedback oil passage is shown by a broken line in the figure. The multiple roof bolters in the present disclosure can all control the oil path independently, realize independent oil supply and cutting off, so there is no problem of mutual restriction and interference.
In this embodiment, the oil pump 2 supplies oil to the first reversing valve 3 and the second reversing valve 5 only at standby pressure when the first anchor support system operating valve block 8, the second anchor support system operating valve block 10, the trolley system operating valve block 9, and the trolley raising system operating valve block 11 are free of feedback oil. When a plurality of bolters of the first anchor rod support system operation valve group 8 need to carry out support work, the left position of the first reversing valve 3 is electrified, pilot oil passes through the left position of the first reversing valve 3 to control the left position of the first hydraulic control one-way valve group 4 to reversely open, hydraulic oil of the main control oil way flows to the first anchor rod support system operation valve group 8 through the first hydraulic control one-way valve group 4, and when the first anchor rod support system operation valve group 8 acts, the bolters of the first anchor rod support system operation valve group 8 have corresponding action output.
Similarly, when the bolter of the second bolt support system operating valve group 10 needs to work, the left position of the second reversing valve 5 is powered on, the pilot oil passes through the left position of the second reversing valve 5 to control the left position of the second hydraulic control one-way valve group 6 to be reversely opened, the hydraulic oil of the main control oil way flows to the second bolt support system operating valve group 10 through the second hydraulic control one-way valve group 6, and when the second bolt support system operating valve group 10 acts, the bolter of the second bolt support system operating valve group 10 has corresponding action output.
Because the left position and the right position of the first reversing valve 3 and the second reversing valve 5 are interlocked, the left position is electrified, and the right position cannot be electrified. I.e. in case the anchor bolt support system gets electricity, it is not possible for the trolley raising system and the trolley pulling system to get electricity.
The oil pump 2 supplies oil to the first reversing valve 3 and the second reversing valve 5 only at standby pressure when the first anchor support system operating valve block 8, the second anchor support system operating valve block 10, the trolley system operating valve block 9 and the trolley raising system operating valve block 11 are free of feedback oil. Under the condition that supporting work is completed, when the operation valve group 9 of the trolley system needs to work, the right position of the first reversing valve 3 is electrified, pilot oil passes through the right position of the first hydraulic control one-way valve group 4 of the first reversing valve 3 to be reversely opened, main oil way hydraulic oil flows to the operation valve group 9 of the trolley system through the first hydraulic control one-way valve group 4, and when the operation valve group 9 of the trolley system acts, the trolley system has corresponding action output.
Similarly, when the trolley heightening system operation valve group 11 needs to work, the right position of the second reversing valve 5 is electrified, the pilot oil passes through the right position of the second hydraulic control one-way valve group 6 of the second reversing valve 5 to be reversely opened, main oil way hydraulic oil flows to the trolley heightening system operation valve group 11 through the second hydraulic control one-way valve group 6, and when the trolley heightening system operation valve group 11 acts, the trolley heightening system has corresponding action output.
Because the left position and the right position of the first reversing valve 3 and the second reversing valve 5 are interlocked, the right position is electrified, and the left position cannot be electrified. I.e. in case the trolley raising system and the trolley pulling system are working, it is not possible to get electricity to the anchor bolt support system.
If the control valve 7 is not pressed, as shown in fig. 1, when the first anchor support system operation valve group 8, the second anchor support system operation valve group 10, or the trolley system operation valve group 9, the trolley raising system operation valve group 11 are operated, feedback oil is fed back to the oil pump 2 through the control valve 7, so that the pressure of the oil pump 2 may vary with the variation of the feedback pressure.
When an emergency occurs, the control valve 7 is pressed down instantly, so that the first anchor bolt support system operation valve group 8, the second anchor bolt support system operation valve group 10 or the trolley system operation valve group 9 and the trolley height-adjusting system operation valve group 11 feed back oil liquid is cut off, and the oil pump 2 can only output standby pressure without high pressure oil under the condition of no feedback, thereby playing a role in protection.
From the above, in the shield machine interlocking system, the first anchor bolt support system operating valve group 8, the trolley lifting system operating valve group 9, the second anchor bolt support system operating valve group 10 and the trolley lifting system operating valve group 11 are supplied with oil from the same oil pump 2. The first anchor bolt support system operating valve group 8 and the pulling and lifting vehicle system operating valve group 9 are alternatively operated, and the second anchor bolt support system operating valve group 10 and the trolley heightening system operating valve group 11 are alternatively operated. When the first anchor bolt support system operating valve group 8 and the second anchor bolt support system operating valve group 10 are operated by the anchoring machine, the pulling lifting vehicle system operating valve group 9 and the trolley heightening system operating valve group 11 cannot be operated. And, there is the independent control switch between first anchor bolt support system operating valve group 8 and the second anchor bolt support system operating valve group 10, and one of them is first to support the completion after, can cut off the high pressure oil way alone.
FIG. 2 is a schematic diagram of the structure of a button in one embodiment of the shield machine interlock hydraulic system of the present disclosure.
According to this embodiment, the hydraulic system may comprise a first button 12 and a second button 13, the first button 12 being used for controlling the left position of the first reversing valve 3, the second button 13 being used for controlling the left position of the second reversing valve 5, and the hydraulic system sending a feedback signal to the main control chamber upon loss of power to the left positions of the first reversing valve 3 and the second reversing valve 5.
The present disclosure employs two such buttons 12, 13 as shown in fig. 2 to control the left position of the reversing valves 3, 5. The button has two actions, one is that the off-representative is pressed without resetting and one is that the on-representative is pulled.
Specifically, when the first button 12 is pulled up, the left position of the first reversing valve 3 is powered, the oil passage of the bolter of the first anchor support system operating valve group 8 is connected, and the bolter of the first anchor support system operating valve group 8 works. When the first anchor bolt support system operating valve group 8 finishes the anchor bolt, an operator presses the first button 12, the left position of the first reversing valve 3 is powered off, an oil way of the anchor bolt of the first anchor bolt support system operating valve group 8 is disconnected, and meanwhile, a feedback signal is fed back to the main control room, and the main operator knows that the anchor bolt station of the first anchor bolt support system operating valve group 8 finishes anchor bolt support.
When the second button 13 is pulled up, the left position of the second reversing valve 5 is powered, the bolting machine oil path of the second bolt support system operating valve group 10 is connected, and the bolting machine of the second bolt support system operating valve group 10 works. When the second bolt support system operating valve group 10 finishes the bolting, the operator presses the second button 13, the left position of the second reversing valve 5 is powered off, the bolt engine oil path of the second bolt support system operating valve group 10 is disconnected, and meanwhile, a feedback signal is fed back to the main control room, and the main operator knows that the bolt station of the second bolt support system operating valve group 10 finishes the bolt support.
When the feedback signal of the first and second bolt support system operating valve sets 8, 10 is fully received, the hydraulic system starts to be ready for the next action. Therefore, the trolley can be operated after all the anchor rod supports are completed, and the safety of the system is improved.
In the present disclosure, the load-sensitive system is used for the whole hydraulic system for energy saving and heat generation reduction, and the load-sensitive pump is also used for the oil pump 2.
The shield machine interlocking hydraulic system adopts three-position four-way reversing valves 3 and 5 to control the reverse opening of the hydraulic control check valve groups 4 and 6, can control the large flow of the main loop by using the small-flow pilot hydraulic flow, realizes the direct control of the on-off of the main control oil way, and has strong safety.
Meanwhile, the left and right positions of the three-position four-way reversing valves 3 and 5 have an interlocking function, and only one end of the three-position four-way reversing valve is electrified, so that control of two sequential actions can be realized, the two execution actions are interlocked, and the reliability and the safety of a hydraulic system are improved.
The shield machine interlocking hydraulic system is provided with a hydraulic emergency safety loop in the feedback loop of the load sensitive valve and the load sensitive pump, and the two-position four-way control valve 7 can switch on and off the feedback loop, so that the whole hydraulic system has no high-pressure oil output and can only work with standby pressure, and has higher safety.
The two-position two-way electric control switch buttons 12 and 13 are adopted, so that an oil way on-off valve can be controlled, an operation completion signal can be fed back to the main control room, and the safety and reliability of the hydraulic interlocking system in the use process are improved.
In order to save energy and reduce heat, the system mainly adopts a load sensitive system, an anchor bolt supporting system, a trolley pulling system and a trolley heightening system are supplied with oil by the same oil pump, and only when the anchor bolt system does not act, the trolley pulling system and the trolley heightening system only have high-pressure oil, so that the interlocking failure of each group of systems is not caused, the danger is generated, independent control switches are arranged between the two anchor bolts, the two anchor bolts are not interfered with each other, a high-pressure oil path can be cut off when emergency is dealt with, operators can receive feedback signals after the anchor bolt works are finished, whether supporting is finished or not can be judged, and the safety and reliability of the system are improved.
The technical scope of the present disclosure is not limited to the above description, and those skilled in the art may make various changes and modifications to the above-described embodiments without departing from the technical spirit of the present disclosure, and these changes and modifications should all fall within the scope of the present disclosure.
Claims (9)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311269580.XA CN117167351B (en) | 2023-09-27 | 2023-09-27 | Shield tunneling machine interlocking hydraulic system, method for operating same and mining shield tunneling machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311269580.XA CN117167351B (en) | 2023-09-27 | 2023-09-27 | Shield tunneling machine interlocking hydraulic system, method for operating same and mining shield tunneling machine |
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| CN117167351B true CN117167351B (en) | 2025-10-31 |
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| CN216691124U (en) * | 2021-12-08 | 2022-06-07 | 紫金矿业建设有限公司 | Anchor cable and anchor rod supporting equipment integrated machine |
| CN114876895B (en) * | 2022-05-30 | 2025-10-17 | 尤洛卡（山东）矿业科技有限公司 | Mining automatic anchor backing robot hydraulic control system |
| CN217950643U (en) * | 2022-07-21 | 2022-12-02 | 三一重型装备有限公司 | Water pump multistage control system and operation machinery |
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2023
- 2023-09-27 CN CN202311269580.XA patent/CN117167351B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116241516A (en) * | 2022-12-26 | 2023-06-09 | 中国铁建重工集团股份有限公司 | Control system of bolter pumping station, bolter |
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