Cutting hydraulic control system for hob type rock tunneling machine and tunneling equipment

Abstract

The utility model discloses a slotting hydraulic control system for a hob type rock tunneling machine and tunneling equipment, comprising a slotting oil cylinder, the output end of which is used for installing a cutterhead mechanism of the hob type rock tunneling machine and is used for driving the cutterhead mechanism to extend or retract under hydraulic drive; the first oil way is respectively connected with an oil source and a rodless cavity of the slotting oil cylinder; the second oil way is respectively connected with the oil source and a rod cavity of the slotting oil cylinder; the oil path control mechanism is connected with the oil source, is respectively connected with the first oil path and the second oil path, and is used for controlling the input direction of the pressure of the oil source so as to control the action direction of the slotting oil cylinder; the detection module is used for detecting the pressure of a rodless cavity of the slotting oil cylinder and detecting the stroke of the slotting oil cylinder; the slotting control device is electrically connected with the detection module and used for receiving the pressure signal, detected and fed back by the detection module, of the rodless cavity so as to adjust the stretching speed of the slotting oil cylinder according to the pressure of the rodless cavity.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of slotting hydraulic control systems for cutter-type rock tunneling machine, in particular to a kind of slotting hydraulic control systems for cutter-type rock tunneling machine. BACKGROUND

[0002] Cutter-type rock tunneling machine belongs to hard rock roadway tunneling special equipment, its power head is using shield machine cutter structure, and it is transversely placed for completing hard rock geology tunneling, while it can also consider slag transportation, anchor support operation, it is a kind of continuous operation equipment integrated with rock breaking, collection, material transportation and support.In construction operation process, cutter-type rock tunneling machine cutter device will cut hard rock geology, make its slag stripping, its feed amount is determined by the extension amount of slotting cylinder, generally the extension stroke of slotting cylinder is 1m, by the stroke control of slotting cylinder, repeatedly feed to complete the tunneling operation of whole rock roadway.With the development of roadway construction technology, the function requirement of construction equipment is that it can deal with geological diversity and tunneling demand under different geological conditions, to meet equipment construction progress and efficiency, so cutter-type rock tunneling machine is developed.Cutter-type rock tunneling machine tunneling efficiency is the key factor to measure whether this set of equipment is successfully applied, tunneling efficiency depends on cutter head cutter;two is determined by the control of cutter feed amount.

[0003] At present, there are relatively few data in the field of cutter-type rock tunneling equipment technology, as the key component of cutter-type rock tunneling, cutter feed amount control is evolved from tunneling machine propulsion system, slotting control system of tunneling and anchoring machine and feed control system of cantilever type tunneling machine, there are few technical data of slotting cylinder for cutter-type rock tunneling equipment technology.Cutter-type rock tunneling machine shield or TBM propulsion system uses multiple cylinders for partition control, and the control technology of single slotting cylinder of cutter-type rock tunneling machine is different, tunneling and anchoring machine is the same as the control of single slotting cylinder of cutter-type rock tunneling machine, and cantilever type tunneling machine realizes feed amount control by equipment walking.In summary, the slotting feed control technology of tunneling and anchoring machine is more valuable.At present, the slotting hydraulic control technology of tunneling and anchoring machine has the following shortcomings in the application of cutter-type rock tunneling equipment:

[0004] 1, not meet the rock tunneling equipment construction conditions.Tunneling and anchoring machine slotting control system uses variable pump as power source, realizes slotting cylinder action through electric proportional reversing valve reversing, while the hardness of coal roadway is much smaller than that of rock roadway, the working condition is better, compared with the poor rock tunneling, this control mode is not suitable for cutter-type rock tunneling machine, if the feed amount is too large, it is easy to damage the power head of cutter-type rock tunneling machine, and then affect the service life of structural parts;

[0005] 2. The cutting amount is controlled by the experience of the operator, and cannot be self-adaptively controlled. The cutting amount of the cutting head is controlled by the experience of the operator, and the handle opening size of the remote controller is controlled to realize the cutting amount control, and the cutting amount cannot be self-adaptively controlled.

[0006] 3. The protection system is lacking, and the service life of the structural member is affected. If the operator lacks experience, the cutting amount is too large when the hard coal seam is encountered, and the structural member is easily damaged, and the service life of the structural member is reduced.

[0007] 4. The working efficiency is low. The self-adaptive control is not realized, the working experience of the operator is required to be high, and therefore the working efficiency is not high. Content of the utility model

[0008] The utility model provides a kind of for hobbing rock tunneling machine's slotting hydraulic control system and tunneling equipment, to solve the technical problem that the slotting control system of hobbing rock tunneling equipment in prior art cannot meet construction condition demand.

[0009] According to one aspect of the utility model, a kind of for hobbing rock tunneling machine's slotting hydraulic control system, comprising:

[0010] Slotting cylinder, output end is used to install the cutter head mechanism of hobbing rock tunneling machine, for being driven by hydraulic drive to make cutter head mechanism extend or retract;

[0011] First oil circuit, oil source and the rodless cavity of the slotting cylinder are connected respectively;

[0012] Second oil circuit, oil source and the rod cavity of the slotting cylinder are connected respectively;

[0013] Oil circuit control mechanism, with oil source connection and respectively with first oil circuit, second oil circuit connection, for controlling the input direction of oil source pressure and then controlling the action direction of slotting cylinder;

[0014] Detection module, for detecting the pressure of the rodless cavity of the slotting cylinder and detecting the stroke of the slotting cylinder;

[0015] Slotting control device, with the detection module electric connection, for receiving the pressure signal of the rodless cavity detected by the detection module feedback to adjust the slotting cylinder extension speed according to the pressure of the rodless cavity.

[0016] As further improvement of the above technical solution, the slotting hydraulic control system further includes balancing device, is connected with the first oil circuit and the second oil circuit respectively, for maintaining the pressure balance between the rod cavity and the rodless cavity when the slotting cylinder is in static condition.

[0017] As a further improvement of the above technical solution, the undercutting control device comprises an electric proportional speed regulating valve arranged in the first oil path, which is used to control the pressure input into the rodless cavity of the undercutting oil cylinder through the first oil path according to the stroke of the undercutting oil cylinder fed back by the detection module.

[0018] As a further improvement of the above technical solution, the detection module is further used to detect the pressure of the rod cavity of the undercutting oil cylinder; and the undercutting control device further comprises an electric proportional overflow valve electrically connected with the detection module and connected with a return oil path, which is used to open overflow when the pressure of the rod cavity is overloaded and / or the pressure of the rodless cavity is overloaded.

[0019] As a further improvement of the above technical solution, the undercutting control device further comprises a flow limiting mechanism arranged at the inlet end of the electric proportional overflow valve, which is used to limit the one-way flow of oil in the oil path connected with the inlet end of the electric proportional overflow valve into the electric proportional overflow valve.

[0020] As a further improvement of the above technical solution, the flow limiting mechanism comprises a shuttle valve, the first oil inlet of the shuttle valve is connected with the first oil path, the second oil inlet of the shuttle valve is connected with the second oil path, and the oil outlet of the shuttle valve is connected with the inlet end of the electric proportional overflow valve.

[0021] As a further improvement of the above technical solution, the flow limiting mechanism comprises a first one-way valve and a second one-way valve, the oil inlet of the first one-way valve is connected with the first oil path, the oil inlet of the second one-way valve is connected with the second oil path, and the oil outlet of the first one-way valve and the oil outlet of the second one-way valve are connected with the inlet end of the electric proportional overflow valve.

[0022] As a further improvement of the above technical solution, the oil path control mechanism comprises a load-sensitive proportional multi-way valve connected with an oil source, the first working oil port of the load-sensitive proportional multi-way valve is connected to the rodless cavity of the undercutting oil cylinder through the first oil path, and the second working oil port of the load-sensitive proportional multi-way valve is connected to the rod cavity of the undercutting oil cylinder through the second oil path.

[0023] As a further improvement of the above technical solution, the detection module comprises a stroke sensor used to detect the piston stroke of the undercutting oil cylinder, a first pressure sensor used to detect the pressure of the rodless cavity, and a second pressure sensor used to detect the pressure of the rod cavity.

[0024] According to another aspect of the utility model, a tunneling equipment is also provided, which comprises the above-mentioned undercutting hydraulic control system for a rolling cutter rock tunneling machine.

[0025] The utility model has the following beneficial effects:

[0026] The oil source inputs pressure to the rodless cavity of the slotting oil cylinder through the oil path control mechanism, the rodless cavity is filled with oil, the slotting oil cylinder extends, the cutter disc mechanism advances, and the hydraulic oil in the rod cavity returns through the second oil path and the oil path control mechanism; in this process, the detection module collects the pressure of the rodless cavity in real time to obtain load pressure data, and collects the stroke of the slotting oil cylinder at the same time, and the load pressure change and the stroke change are fed back to the slotting control device, the slotting control device controls the oil pressure input by the oil source to the rodless cavity through the first oil path according to the preset program, and then controls the advancing pressure, that is, the control system adjusts the advancing amount according to the real-time working condition, so that the opening is kept in the dynamic change process, the advancing amount of the cutter disc mechanism is adaptively controlled, the problem of damage to structural parts caused by excessive advancing amount during cutter disc advancing is avoided, the operation is simple, the control is more intelligent, the energy loss is effectively reduced, and the working efficiency is improved.

[0027] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. The utility model will be further explained in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0028] The drawings that form a part of this application are intended to provide further understanding of the utility model, and the schematic embodiments of the utility model and the explanation thereof are used to explain the utility model, and do not constitute undue limitation on the utility model. In the drawings:

[0029] Figure 1 It is the principle view of the slotting hydraulic control system of the rolling cutter type rock tunneling machine of the preferred embodiment of the utility model;

[0030] Figure 2 It is the principle view of the slotting control device of the preferred embodiment of the utility model.

[0031] Legend:

[0032] 1, oil path control mechanism, 2, slotting control device, 21, electric proportional overflow valve, 22, shuttle valve, 23, electric proportional speed regulating valve, 3, first pressure sensor, 4, balancing device, 5, slotting oil cylinder, 6, stroke sensor, 7, second pressure sensor. DETAILED DESCRIPTION

[0033] The embodiments of the utility model will be explained in detail below in combination with the drawings, but the utility model can be implemented in multiple different modes limited and covered by the following.

[0034] Figure 1 It is the principle view of the slotting hydraulic control system of the rolling cutter type rock tunneling machine of the preferred embodiment of the utility model; Figure 2 It is the principle view of the slotting control device of the preferred embodiment of the utility model.

[0035] As Figure 1 and Figure 2 The undercutting hydraulic control system for the rock tunneling machine of the embodiment, as shown in the drawings, comprises:

[0036] The undercutting cylinder 5 has an output end for mounting the cutter head mechanism of the rock tunneling machine, and is used for driving the cutter head mechanism to extend or retract under the hydraulic drive;

[0037] The first oil path is connected to the oil source and the rodless cavity of the undercutting cylinder 5, respectively;

[0038] The second oil path is connected to the oil source and the rod cavity of the undercutting cylinder 5, respectively;

[0039] The oil path control mechanism 1 is connected to the oil source and connected to the first oil path and the second oil path, respectively, and is used for controlling the input direction of the oil source pressure and further controlling the action direction of the undercutting cylinder 5;

[0040] The detection module is used for detecting the pressure of the rodless cavity of the undercutting cylinder 5 and detecting the stroke of the undercutting cylinder 5;

[0041] The undercutting control device 2 is electrically connected to the detection module, and is used for receiving the pressure signal of the rodless cavity detected and fed back by the detection module to adjust the extension speed of the undercutting cylinder 5 according to the pressure of the rodless cavity.

[0042] The working principle of the hydraulic control system: the oil source inputs pressure to the rodless cavity of the undercutting cylinder 5 through the first oil path of the oil path control mechanism 1, the rodless cavity is filled with oil, the undercutting cylinder 5 extends, the cutter head mechanism advances, and the hydraulic oil in the rod cavity is returned through the second oil path and the oil path control mechanism 1; During this process, the detection module collects the pressure of the rodless cavity in real time and obtains the load pressure data, and collects the stroke of the undercutting cylinder 5 at the same time, and feeds back the load pressure change and the stroke change to the undercutting control device 2, and the undercutting control device 2 controls the oil pressure input by the oil source to the rodless cavity through the first oil path according to the preset program, and further controls the advancing pressure, that is, the control system adjusts the advancing amount according to the real-time working condition, so that the opening degree is kept in the dynamic change process, the advancing amount of the cutter head mechanism is adaptively controlled, the problem of structural damage caused by excessive advancing amount during the advancing process of the cutter head is avoided, the operation is simple, the control is more intelligent, the energy loss is effectively reduced, and the working efficiency is improved.

[0043] It should be understood that when the cutter head mechanism retracts, the oil path control mechanism 1 controls the oil source to input pressure to the rod cavity of the undercutting cylinder 5 through the second oil path, the rod cavity is filled with oil, the undercutting cylinder 5 retracts to drive the cutter head mechanism to retreat, and the oil in the rodless cavity is returned through the first oil path and the oil path control mechanism 1.

[0044] It should be understood that the detection module preferably comprises a stroke sensor 6 for detecting the piston stroke of the undercutting cylinder 5, a first pressure sensor 3 for detecting the pressure of the rodless chamber, and a second pressure sensor 7 for detecting the pressure of the rod chamber, the first pressure sensor 3 is connected to the first oil circuit near the rodless chamber, the second pressure sensor 7 is connected to the second oil circuit near the rod chamber, and the stroke sensor 6 is arranged on the piston rod or output end of the undercutting cylinder 5, and the stroke information is obtained by collecting the extension amount of the undercutting cylinder. The stroke sensor 6 and the pressure sensor are realized by using the sensors in the prior art.

[0045] In some embodiments, the undercutting hydraulic control system further comprises a balancing device 4 connected to the first oil circuit and the second oil circuit, respectively, for maintaining the pressure balance between the rod chamber and the rodless chamber when the undercutting cylinder 5 is in a static working condition; preferably, the balancing device 4 is a balance valve group, which comprises a first balance valve arranged on the first oil circuit and a second balance valve arranged on the second oil circuit, and the structure, working principle and the like are not described in detail in the prior art; in this embodiment, the control oil port of the first balance valve is connected to the second oil circuit, and the control oil port of the second balance valve is connected to the first oil circuit, so as to maintain the pressure balance between the rod chamber and the rodless chamber when the undercutting cylinder 5 is in a static working condition, and make the system work more stably.

[0046] In some embodiments, the undercutting control device 2 comprises an electric proportional speed regulating valve 23 arranged on the first oil circuit, for controlling the pressure of the rodless chamber of the undercutting cylinder 5 input through the first oil circuit according to the stroke of the undercutting cylinder 5 and the pressure of the rodless chamber fed back by the detection module, collecting the pressure and stroke data information of the undercutting cylinder 5, and using the electric system to control the electric proportional speed regulating valve 23 according to the established program, so as to keep the opening degree of the electric proportional speed regulating valve 23 in a dynamic change process, thereby realizing the adaptive control of the cutter feed amount; wherein the structure and working principle of the electric proportional speed regulating valve 23 are the prior art, and the system program should be matched and set according to the actual demand; the electric proportional speed regulating valve 23 is used to adaptively adjust the feed amount according to the feed stroke position and the load pressure, so as to meet the real-time working condition demand of the roller-type rock tunneling machine.

[0047] In some embodiments, the detection module is also used to detect the pressure of the rod chamber of the undercutting cylinder 5; the undercutting control device 2 further comprises an electric proportional overflow valve 21 electrically connected with the detection module and connected with the return oil circuit, for opening overflow when the pressure of the rod chamber and / or the pressure of the rodless chamber is overloaded; specifically, the pressures of the rodless chamber and the rod chamber are detected by the detection module, and when the system pressure is overloaded, a signal is input to the electric proportional overflow valve 21 to open the overflow, thereby protecting the system from overloading, cooperating with the adaptive control to protect the structural parts during the feed process, avoiding damage to the structural parts, and improving the overall service life.

[0048] Further, the undercutting control device 2 further comprises a flow limiting mechanism arranged at the inlet of the electric proportional overflow valve 21, for limiting the one-way flow of the hydraulic oil in the oil passage connected to the inlet of the electric proportional overflow valve 21 into the electric proportional overflow valve 21. Preferably, the flow limiting mechanism comprises a shuttle valve 22, the first inlet of the shuttle valve 22 is connected to the first oil passage, the second inlet of the shuttle valve 22 is connected to the second oil passage, and the outlet of the shuttle valve 22 is connected to the inlet of the electric proportional overflow valve 21, so that the hydraulic oil in the first oil passage and the second oil passage can only flow one-way through the shuttle valve 22 to the electric proportional overflow valve 21 and then to the oil tank;

[0049] In other embodiments, the flow limiting mechanism can also comprise a first one-way valve and a second one-way valve, the inlet of the first one-way valve is connected to the first oil passage, the inlet of the second one-way valve is connected to the second oil passage, and the outlet of the first one-way valve and the outlet of the second one-way valve are connected to the inlet of the electric proportional overflow valve 21, so that the hydraulic oil in the first oil passage and the second oil passage can only flow one-way through the electric proportional overflow valve 21 to the oil tank, which has the same effect as the shuttle valve 22.

[0050] In other embodiments, the undercutting control device 2 can also use a direct-acting overflow valve to protect the system from overload.

[0051] The undercutting control device 2 is preferably arranged as an integrated valve group, having an oil port A1 and an oil port A2 for connecting to the first oil passage, an oil port B1 and an oil port B2 for connecting to the second oil passage, and an oil port R for connecting to the oil return passage, the electric proportional speed regulating valve 23 is integrated with the oil passage between the oil port A1 and the oil port A2, the two working oil ports of the shuttle valve 22 are respectively connected to the oil passage between the oil port A1 and the oil port A2 and the oil passage between the oil port B1 and the oil port B2, and the outlet of the electric proportional overflow valve 21 is connected to the oil port R;

[0052] The balancing device 4 is preferably arranged as a balancing valve group composed of a first balancing valve and a second balancing valve, having an oil passage V1 and an oil passage V2, the first balancing valve is arranged in the oil passage V1, and the second balancing valve is arranged in the oil passage V2;

[0053] In some embodiments, the oil path control mechanism 1 comprises a load-sensitive proportional multi-way valve connected with an oil source, a first working oil port of the load-sensitive proportional multi-way valve is connected to a rodless chamber of the slotting oil cylinder 5 through a first oil path, and a second working oil port of the load-sensitive proportional multi-way valve is connected to a rod chamber of the slotting oil cylinder 5 through a second oil path; when the slotting is controlled to extend, the load-sensitive electric proportional multi-way valve controls the oil source to discharge oil through the first working oil port, the oil reaches the oil port A1 of the slotting control valve group through the first oil path, reaches the oil port A2 of the electric proportional speed regulating valve 23, reaches the rodless chamber of the slotting oil cylinder 5 through the balance valve group V1 oil path, the rodless chamber is filled with oil, the oil in the rod chamber of the slotting oil cylinder 5 is discharged to the oil port B2, the oil port B1 and the second working oil port of the slotting control valve group through the balance valve group V2 oil path, and then is returned to the oil source, in the process, the slotting oil cylinder 5 extends, the first pressure sensor 3 collects load pressure data in real time, the load signal change is fed back to the electric proportional speed regulating valve 23, meanwhile, the stroke sensor 6 collects the data of the cutter amount and feeds back to the electric proportional speed regulating valve 23; by collecting the pressure and stroke data information of the slotting oil cylinder 5, the electric proportional speed regulating valve 23 is controlled by using the established program of the electric system, the opening degree of the electric proportional speed regulating valve 23 is continuously maintained in the process of dynamic change, so that the cutter amount adaptive control is realized; in the process of cutter amount feeding of the cutter mechanism, when the load pressure collected by the pressure sensor 7 exceeds the limited value, the signal is fed back to the electric proportional overflow valve 21 through the established program of the electric system to make the electric proportional overflow valve 21 open, at this time, the oil of the first working oil port of the load-sensitive electric proportional multi-way valve is discharged to the oil tank through the oil port A1 of the slotting control valve group, the electric proportional speed regulating valve 23, the shuttle valve 22 and the electric proportional overflow valve 21, and then is discharged to the oil tank through the oil port R of the slotting control valve group, so that the cutter amount feeding protection function is realized, and the damage to the cutter mechanism is reduced.

[0054] In another aspect, the preferred embodiment also provides a tunneling equipment comprising the slotting hydraulic control system for the roller cutter rock tunneling machine.

[0055] In the description of the utility model, it needs to explain, the orientation or position relation that the terms "upper", "lower", "front", "back" and the like indicate is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not instructing or implying that the device or element referred to must have a particular orientation, is constructed and operated with a particular orientation, therefore can not be understood as the limitation to the utility model.

[0056] In the description of the utility model, it needs to explain, unless another explicit provision and limitation, the terms "mount", "connect", "connection" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through the intermediate medium, can be the intercommunication of two elements inside.For the ordinary skilled person in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0057] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A flushing hydraulic control system for a roller-cone rock tunneling machine characterized by, The tunneling hydraulic control system comprises: a slotting oil cylinder (5) having an output end for mounting a cutter head mechanism of a roller cutter rock tunneling machine, and being used for driving the cutter head mechanism to extend or retract under the drive of hydraulic pressure; a first oil path connected to an oil source and a rodless chamber of the slotting oil cylinder (5) respectively; a second oil path connected to the oil source and a rod chamber of the slotting oil cylinder (5) respectively; an oil path control mechanism (1) connected to the oil source and connected to the first oil path and the second oil path respectively, and used for controlling the input direction of the oil source pressure and further controlling the action direction of the slotting oil cylinder (5); a detection module used for detecting the pressure of the rodless chamber of the slotting oil cylinder (5) and detecting the stroke of the slotting oil cylinder (5); a slotting control device (2) electrically connected to the detection module, and used for receiving the pressure signal of the rodless chamber detected by the detection module to adjust the extending speed of the slotting oil cylinder (5) according to the pressure of the rodless chamber.

2. The flush hydraulic control system for a roller-cone rock tunneling machine of claim 1, wherein, The slotting hydraulic control system further comprises a balancing device (4) connected to the first oil path and the second oil path respectively, and used for keeping the pressure balance between the rod chamber and the rodless chamber when the slotting oil cylinder (5) is in a static working condition.

3. The flush hydraulic control system for a roller-cone rock tunneling machine of claim 1, wherein, The slotting control device (2) comprises an electric proportional speed regulating valve (23) arranged in the first oil path, and used for controlling the pressure of the rodless chamber of the slotting oil cylinder (5) input through the first oil path according to the stroke of the slotting oil cylinder (5) and the pressure of the rodless chamber fed back by the detection module.

4. The flush hydraulic control system for a roller-cone rock tunneling machine of claim 1, wherein, The detection module is further used for detecting the pressure of the rod chamber of the slotting oil cylinder (5); and the slotting control device (2) further comprises an electric proportional overflow valve (21) electrically connected to the detection module and connected to a return oil path, and used for opening overflow when the pressure of the rod chamber and / or the pressure of the rodless chamber is overloaded.

5. The flush hydraulic control system for a roller-cone rock tunneling machine of claim 4, wherein, The slotting control device (2) further comprises a flow limiting mechanism arranged at an inlet end of the electric proportional overflow valve (21), and used for limiting the one-way inflow of oil in an oil path connected to the inlet end of the electric proportional overflow valve (21) into the electric proportional overflow valve (21).

6. The flush hydraulic control system for a roller-cone rock tunneling machine of claim 5, wherein, The flow limiting mechanism comprises a shuttle valve (22), a first oil inlet of the shuttle valve (22) is connected to the first oil path, a second oil inlet of the shuttle valve (22) is connected to the second oil path, and an oil outlet of the shuttle valve (22) is connected to the inlet end of the electric proportional overflow valve (21).

7. The flush hydraulic control system for a roller-cone rock tunneling machine of claim 5, wherein, The flow limiting mechanism comprises a first one-way valve and a second one-way valve, an oil inlet of the first one-way valve is connected to the first oil path, an oil inlet of the second one-way valve is connected to the second oil path, and an oil outlet of the first one-way valve and an oil outlet of the second one-way valve are connected to the inlet end of the electric proportional overflow valve (21).

8. The flush hydraulic control system for a roller-cone rock tunneling machine of claim 1, wherein, The oil path control mechanism (1) comprises a load-sensitive proportional multi-way valve connected to the oil source, a first working oil port of the load-sensitive proportional multi-way valve is connected to the rodless chamber of the slotting oil cylinder (5) through the first oil path, and a second working oil port of the load-sensitive proportional multi-way valve is connected to the rod chamber of the slotting oil cylinder (5) through the second oil path.

9. The flush hydraulic control system for a roller-cone rock tunneling machine of any of claims 1-8, wherein, The detection module comprises a stroke sensor (6) for detecting the piston stroke of the slotting oil cylinder (5), a first pressure sensor (3) for detecting the pressure of the rodless chamber, and a second pressure sensor (7) for detecting the pressure of the rod chamber.

10. A tunneling apparatus, characterized by, The application has the slotting hydraulic control system for the rock tunneling machine with the cutter.

Images