Rock drilling hydraulic control system and engineering equipment

Abstract

The application provides a rock drilling hydraulic control system and engineering equipment, and relates to the technical field of engineering equipment.The rock drilling hydraulic control system comprises an actuator, a power mechanism connected with the actuator through an oil pipeline and used for providing power for the actuator, a control valve group arranged on the oil pipeline and used for controlling the conduction of the oil pipeline, a gas detection device arranged in the actuator and used for detecting the content of protective gas in the actuator, and a control device connected with the control valve group and the gas detection device respectively and used for controlling the working state of the control valve group according to the detection result of the gas detection device.The rock drilling hydraulic control system provided by the application can avoid the situation that the actuator works without protective gas, and improves the service life of the equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering equipment, in particular to a rock drilling hydraulic control system and engineering equipment. BACKGROUND

[0002] At present, in the process of mining tunnel excavation construction, the blasting excavation construction process is used, and the blasting excavation construction needs to drill holes, so the rock drilling jumbo is introduced. In the process of using the rock drilling jumbo, in order to maintain good work efficiency, some protection elements need to be added in the hydraulic system, the introduction of the protection elements not only improves the service life of the rock drilling jumbo, but also greatly reduces the failure rate and ensures the work efficiency. However, the rock drilling jumbo in the related art still has the following problems: first, the sensitivity of the anti-stuck drill valve group is low, and the drill rod cannot be protected in time. Second, nitrogen protection is needed in the rock drilling machine, and it is not possible to detect whether nitrogen is flowing in the rock drilling machine. Third, when the rock drilling machine is in high-low pressure impact operation, there are interlayers in the rock, which will cause pulsating impact, and there is no higher pressure protection. Fourth, during the rock drilling operation, the actual operation pressure is lower than the full load pressure, and if the full load pressure adjusted by the main valve is always used, the drill rod will be bent and damaged due to the large full load pressure when stuck.

[0003] Therefore, how to design a rock drilling hydraulic control system capable of further protecting the rock drilling jumbo has become a problem to be solved at present. SUMMARY

[0004] The present application aims to at least solve the problem of low service life of the rock drilling jumbo.

[0005] To this end, the first aspect of the present application provides a rock drilling hydraulic control system.

[0006] The second aspect of the present application provides an engineering equipment.

[0007] Therefore, the first aspect of the present application provides a rock drilling hydraulic control system, which comprises: an actuator; a power mechanism connected with the actuator through an oil pipeline, used for providing power for the actuator; a control valve group arranged on the oil pipeline, used for controlling the conduction of the oil pipeline; a gas detection device arranged in the actuator, used for detecting the content of the protective gas in the actuator; and a control device connected with the control valve group and the gas detection device respectively, used for controlling the working state of the control valve group according to the detection result of the gas detection device.

[0008] The rock drilling hydraulic control system provided by the application comprises an actuator, a power mechanism, a control valve group, a gas detection device and a control device. The power mechanism is connected with the actuator through an oil pipeline, so that the actuator can be powered to work, for example, the actuator can be supplied with hydraulic oil. The control valve group is arranged on the oil pipeline and can control the conduction of the oil pipeline, so that when the actuator does not need to work, the oil pipeline between the actuator and the power mechanism can be disconnected through the control valve group. The gas detection device is arranged on the actuator and can detect the content of the protective gas in the actuator and send it to the control device. When the gas detection device detects that the content of the protective gas in the actuator is insufficient, a signal can be sent to the control device, and the control device can disconnect the control valve group, so that the power mechanism does not work, thereby avoiding the situation that the actuator works without protective gas and improving the service life of the equipment. At the same time, since the gas detection device is arranged and connected with the control device, when the content of the protective gas in the actuator is insufficient, the control device can timely close the control valve group, the response speed is fast, and the situation that the actuator works without protective gas can be effectively avoided.

[0009] It can be understood that the working state of the control valve group can be a conduction state and a disconnection state. The conduction state further includes various conduction states.

[0010] According to the rock drilling hydraulic control system provided by the application, the following additional technical features can be further provided:

[0011] In some embodiments, the actuator comprises a rotary motor, a rock drill and a push oil cylinder, and the gas detection device is arranged on the rock drill; the control valve group comprises a pilot valve group and a reversing valve group, and the power mechanism is further configured to provide power for reversing of the reversing valve group, and the pilot valve group is arranged on the oil pipeline between the power mechanism and the reversing valve group and is configured to adjust the reversing direction of the reversing valve group.

[0012] In this embodiment, the actuator comprises a rotary motor, a rock drill and a push oil cylinder. The gas detection device is arranged on the rock drill and can detect the content of the protective gas in the rock drill. The control valve group comprises a pilot valve group and a reversing valve group. The power mechanism can provide power for the reversing valve group to reverse, so that the hydraulic oil provided by the power mechanism for the actuator is delivered to the actuator through different oil pipelines to realize different actions of the actuator. For example, the rotary motor is made to rotate forward or reverse, the rock drill is made to work at high pressure or low pressure, and the push oil cylinder is made to move forward or backward. At the same time, by arranging the pilot valve group, the power provided by the power mechanism can be prevented from always acting on the reversing valve group, so that the reversing cannot be realized. By arranging the pilot valve group, the reversing direction of the reversing valve group can be adjusted according to actual conditions to meet actual use requirements.

[0013] In some embodiments, the control device is connected with the pilot valve group and the gas detection device respectively, and is configured to control the working state of the pilot valve group according to the detection result of the gas detection device.

[0014] In this embodiment, the control device is connected with the pilot valve group and the gas detection device respectively, and is configured to control the working state of the pilot valve group according to the detection result of the gas detection device. It can be understood that the reversing valve group is in a disconnected state in the non-working state, and when working, the reversing valve group needs to be controlled by the pilot valve group to reverse, so that the oil pipeline is connected, thereby realizing the working of the actuator. Therefore, the control device is connected with the pilot valve group and the gas detection device respectively in the present application, and the working state of the pilot valve group can be controlled according to the detection result of the gas detection device. When the content of the protective gas reaches the preset requirement, the pilot valve group is controlled to work, so that the reversing valve group reverses to realize the working of the actuator. It can be understood that the oil pipeline can be connected only when the content of the protective gas in the actuator reaches the preset requirement, so that the actuator works, thereby playing a protective role for the equipment.

[0015] In some embodiments, the reversing valve group comprises: a first control valve group arranged on the oil pipeline between the rotary motor and the power mechanism; a second control valve group arranged on the oil pipeline between the rock drill and the power mechanism; and a third control valve group arranged on the oil pipeline between the advancing oil cylinder and the power mechanism.

[0016] In this embodiment, the reversing valve group comprises the first control valve group, the second control valve group and the third control valve group. The first control valve group is arranged on the oil pipeline between the rotary motor and the power mechanism, and can control the on-off of the oil pipeline between the rotary motor and the power mechanism, and the transmission direction of the hydraulic oil, so that the rotary motor can realize forward rotation and reverse rotation. The second control valve group is arranged on the oil pipeline between the rock drill and the power mechanism, and can control the on-off of the oil pipeline, and control one of the high-pressure hydraulic oil and the low-pressure hydraulic oil to enter the rock drill, thereby realizing high-pressure impact operation or low-pressure impact operation. The third control valve group is arranged on the oil pipeline between the advancing oil cylinder and the power mechanism, and can control the on-off of the oil pipeline, and control whether the hydraulic oil enters from the rodless chamber of the hydraulic cylinder or from the rod chamber, thereby realizing the extension or retraction of the hydraulic cylinder. By arranging the reversing valve group as three control valve groups to control the rotary motor, the rock drill and the advancing oil cylinder respectively, the rotary motor, the rock drill and the advancing oil cylinder can work independently, and the working effect can also be ensured.

[0017] In some embodiments, the rock drilling hydraulic control system further comprises: a first overflow valve group arranged between the rock drill and the reversing valve group; and a second overflow valve group arranged between the advancing oil cylinder and the reversing valve group.

[0018] In this embodiment, the rock drilling hydraulic control system further comprises a first overflow valve group and a second overflow valve group. The first overflow valve group is arranged between the rock drill and the reversing valve group, and can eliminate the instantaneous high pressure generated by the hydraulic oil input into the rock drill, thereby protecting the hydraulic system. The second overflow valve group is arranged between the advance oil cylinder and the reversing valve group, and can eliminate the instantaneous high pressure generated by the hydraulic oil input into the advance oil cylinder, thereby protecting the hydraulic system.

[0019] In some embodiments, optionally, the rock drilling hydraulic control system further comprises a first pressure sensor arranged between the rotary motor and the reversing valve group and connected to the control device, for detecting the pressure of the oil entering the rotary motor; and / or a rotation speed sensor connected to the rotary motor and the control device respectively, for detecting the rotation speed of the rotary motor.

[0020] In this embodiment, the rock drilling hydraulic control system further comprises a first pressure sensor. The first pressure sensor is arranged between the rotary motor and the reversing valve group and connected to the control device, and can detect the pressure of the oil entering the rotary motor and send it to the control device. This arrangement, by arranging the first pressure sensor to detect the pressure of the hydraulic oil entering the rotary motor, can timely send a signal to the control device when the rotary motor is stuck, so as to disconnect the control valve group through the control device, thereby avoiding continuous oil supply to the rotary motor and protecting the system.

[0021] In some embodiments, optionally, the rock drilling hydraulic control system further comprises a rotation speed sensor connected to the rotary motor and the control device respectively, for detecting the rotation speed of the rotary motor.

[0022] In this embodiment, the rock drilling hydraulic control system further comprises a rotation speed sensor. The rotation speed sensor is connected to the rotary motor and the control device respectively, and can detect the rotation speed of the rotary motor and send it to the control device, thereby protecting the system by timely reacting through the control device when the rotary motor is stuck.

[0023] In some embodiments, optionally, the rock drilling hydraulic control system further comprises a second pressure sensor arranged between the advance oil cylinder and the reversing valve group and connected to the control device, for detecting the pressure of the oil entering the advance oil cylinder.

[0024] In this embodiment, the rock drilling hydraulic control system further comprises a second pressure sensor. The second pressure sensor is arranged between the advance oil cylinder and the reversing valve group and connected to the control device, and can detect the pressure of the oil entering the advance oil cylinder and send it to the control device. By arranging the second pressure sensor, the pressure of the oil delivered to the advance oil cylinder can be detected, thereby stopping the advance oil cylinder from working in time through the control device when the advance oil cylinder is stuck.

[0025] In some embodiments, the rock drilling hydraulic control system further comprises a one-way valve group arranged between the rock drill and the reversing valve group, for preventing the oil in the rock drill from flowing back to the reversing valve group.

[0026] In this embodiment, the rock drilling hydraulic control system further comprises a one-way valve group. The one-way valve group is arranged between the rock drill and the reversing valve group, and can prevent the oil in the rock drill from flowing back to the reversing valve group. It can be understood that, due to the arrangement of the one-way valve group, the hydraulic oil can only be delivered from the reversing valve group to the rock drill, and the hydraulic oil in the rock drill cannot flow back to the reversing valve group from the one-way valve group, so that the impact pressure can be ensured when the rock drill is performing the impact operation.

[0027] In some embodiments, the rock drilling hydraulic control system further comprises a pneumatic reversing valve arranged between the pilot valve group and the reversing valve group, and connected with the gas source, for controlling the conduction between the pilot valve group and the reversing valve group.

[0028] In this embodiment, the rock drilling hydraulic control system further comprises a pneumatic reversing valve. The pneumatic reversing valve is arranged between the pilot valve group and the reversing valve group, and connected with the gas source, and can control the conduction between the pilot valve group and the reversing valve group. It can be understood that, when the gas source delivers the protection gas to the rock drill, the gas source can drive the pneumatic reversing valve to open, so that the pilot valve group and the reversing valve group are communicated, so that the reversing valve group can be reversed by the pilot valve group. If the gas source does not deliver the protection gas to the rock drill, the pneumatic reversing valve will not be opened, so that the pilot valve group and the reversing valve group will not be communicated, so that even if the control device controls the pilot valve group to work, the reversing valve group cannot work, and thus the system cannot operate. The present application can realize double protection by arranging the gas detection device and the pneumatic reversing valve, and when the connecting pipeline between the gas source and the rock drill fails, the pilot valve group can be controlled not to work by the detection result of the gas detection device, so as to protect the system.

[0029] The second aspect of the present application provides an engineering equipment comprising the rock drilling hydraulic control system according to any one of the first aspect.

[0030] The engineering equipment provided by the present application comprises the rock drilling hydraulic control system according to any one of the first aspect. Therefore, the engineering equipment provided by the present application also has all the beneficial technical effects of the rock drilling hydraulic control system according to any one of the first aspect, which will not be repeated here.

[0031] Additional aspects and advantages of the present application will become apparent in the description that follows, or will be appreciated by practice of the application. Attached Figure Description

[0032] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0033] Figure 1 A schematic diagram of the structure of a rock drilling hydraulic control system according to an embodiment of the present invention is shown;

[0034] Figure 2 A block diagram of a rock drilling hydraulic control system according to an embodiment of the present invention is shown.

[0035] in, Figure 1 and Figure 2 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0036] 1. Actuator; 12. Rotary Motor; 14. Rock Drill; 16. Propulsion Cylinder; 18. Oil Pipeline; 2. Control Valve Assembly; 22. Pilot Valve Assembly; 222. Pilot Rotary Valve Assembly; 224. Pilot Impact Valve Assembly; 226. Pilot Propulsion Valve Assembly; 24. Directional Control Valve Assembly; 242. First Control Valve Assembly; 244. Second Control Valve Assembly; 246. Third Control Valve Assembly; 3. Gas Detection Device; 4. First Relief Valve Assembly; 42. High-Pressure Relief Valve; 44. Low-Pressure Relief Valve; 5. Second Relief Valve Assembly; 52. Rodless Chamber Relief Valve; 54. Rod Chamber Relief Valve; 6. First Pressure Sensor; 7. Speed ​​Sensor; 8. Second Pressure Sensor; 9. Check Valve Assembly; 92. High-Pressure Check Valve; 94. Low-Pressure Check Valve; 10. Pneumatic Directional Control Valve; 11. Air Source; 13. Power Mechanism; 15. Control Device; 100. Rock Drilling Hydraulic Control System. Detailed Implementation

[0037] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0038] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0039] The following reference Figure 1 and Figure 2 This invention describes a rock drilling hydraulic control system and engineering equipment proposed according to some embodiments of the present invention.

[0040] According to an embodiment of the first aspect of the present invention, such as Figure 1 and Figure 2As shown, the first aspect of the present application provides a rock drilling hydraulic control system 100, comprising an actuator 1, a power mechanism 13, a control valve group 2, a gas detection device 3 and a control device 15. The power mechanism 13 is connected with the actuator 1 through an oil pipeline 18, for providing power for the actuator 1. The control valve group 2 is arranged on the oil pipeline 18, for controlling the conduction of the oil pipeline 18. The gas detection device 3 is arranged on the actuator 1, for detecting the content of the protective gas in the actuator 1. The control device 15 is connected with the control valve group 2 and the gas detection device 3 respectively, for controlling the working state of the control valve group 2 according to the detection result of the gas detection device 3.

[0041] The rock drilling hydraulic control system 100 provided by the present application comprises an actuator 1, a power mechanism 13, a control valve group 2, a gas detection device 3 and a control device 15. The power mechanism 13 is connected with the actuator 1 through an oil pipeline 18, so as to provide power for the actuator 1, so that the actuator 1 works, for example, the actuator 1 can be provided with hydraulic oil. The control valve group 2 is arranged on the oil pipeline 18, and can control the conduction of the oil pipeline 18, so that when the actuator 1 does not need to work, the oil pipeline 18 between the actuator 1 and the power mechanism 13 can be disconnected through the control valve group 2. The gas detection device 3 is arranged on the actuator 1, and can detect the content of the protective gas in the actuator 1 and send it to the control device 15. When the gas detection device 3 detects that the content of the protective gas in the actuator 1 is insufficient, a signal can be sent to the control device 15, and the control device 15 makes the control valve group 2 disconnected, so that the power mechanism 13 does not work, so that the situation that the actuator 1 works without protective gas is avoided, and the service life of the equipment is improved. At the same time, since the gas detection device 3 is arranged and connected with the control device 15, when the content of the protective gas in the actuator 1 is insufficient, the control device 15 can timely close the control valve group 2, the reaction speed is fast, and the situation that the actuator 1 works without protective gas can be effectively avoided.

[0042] It can be understood that the working state of the control valve group 2 can be a conduction state and a disconnection state. The conduction state further includes a plurality of conduction states.

[0043] In some embodiments, optionally, the gas detection device 3 comprises a gas pressure sensor.

[0044] In this embodiment, the gas pressure sensor is sensitive in reaction, and can effectively detect the protective gas of the actuator 1.

[0045] In some embodiments, optionally, the gas detection device 3 is arranged at the gas inlet of the actuator 1.

[0046] In some embodiments, optionally, the protective gas is nitrogen.

[0047] In some embodiments, the actuating mechanism 1 comprises a rotary motor 12, a rock drill 14 and a propulsion cylinder 16, the gas detecting device 3 is arranged on the rock drill 14; the control valve group 2 comprises a pilot valve group 22 and a reversing valve group 24, the power mechanism 13 is further used to provide power for the reversing of the reversing valve group 24, the pilot valve group 22 is arranged on the oil pipeline 18 between the power mechanism 13 and the reversing valve group 24, and is used to adjust the reversing direction of the reversing valve group 24.

[0048] In this embodiment, the actuating mechanism 1 comprises a rotary motor 12, a rock drill 14 and a propulsion cylinder 16. The gas detecting device 3 is arranged on the rock drill 14 and can detect the content of the protective gas in the rock drill 14. The control valve group 2 comprises a pilot valve group 22 and a reversing valve group 24. The power mechanism 13 can provide power for the reversing valve group 24, so that the reversing valve group 24 reverses, thereby enabling the hydraulic oil provided by the power mechanism 13 to be delivered to the actuating mechanism 1 through different oil pipelines 18 to realize different actions of the actuating mechanism 1. For example, the rotary motor 12 is enabled to rotate forward or reverse, the rock drill 14 is enabled to work at high pressure or low pressure, and the propulsion cylinder 16 is enabled to move forward or backward. At the same time, by arranging the pilot valve group 22, the power provided by the power mechanism 13 can be prevented from always acting on the reversing valve group 24, thereby failing to realize reversing. By arranging the pilot valve group 22, the reversing direction of the reversing valve group 24 can be adjusted according to actual conditions to meet actual use requirements.

[0049] In some embodiments, the reversing valve group 24 comprises a hydraulic control reversing valve group.

[0050] In this embodiment, the reversing valve group 24 can be a hydraulic control reversing valve group, thereby enabling the hydraulic control valve group to be controlled by the hydraulic oil provided by the power mechanism 13 to reverse.

[0051] It can be understood that the power mechanism 13 can not only provide power for the actuating mechanism 1, but also provide power for the reversing of the reversing valve group 24.

[0052] In some embodiments, the control device 15 is connected with the pilot valve group 22 and the gas detecting device 3 respectively, and is used to control the working state of the pilot valve group 22 according to the detection result of the gas detecting device 3.

[0053] In this embodiment, the control device 15 is connected with the pilot valve group 22 and the gas detection device 3 respectively, and can control the working state of the pilot valve group 22 according to the detection result of the gas detection device 3. It can be understood that the reversing valve group 24 is in the off state in the non-working state, and when working, the reversing valve group 24 needs to be controlled by the pilot valve group 22 to reverse, so that the oil pipeline 18 is conducted, thereby realizing the working of the actuator 1. Therefore, the control device 15 is connected with the pilot valve group 22 and the gas detection device 3 respectively in the present application, and the working state of the pilot valve group 22 can be controlled by the detection result of the gas detection device 3. When the content of the protective gas reaches the preset requirement, the pilot valve group 22 is controlled to work, so that the reversing valve group 24 is reversed to realize the working of the actuator 1. It can be understood that the present application can only conduct the oil pipeline 18 when the content of the protective gas in the actuator 1 reaches the preset requirement, so that the actuator 1 works, thereby playing a protective role for the equipment.

[0054] In some embodiments, optionally, the control device 15 can also be connected with the reversing valve group 24 and the gas detection device 3 respectively, for controlling the working state of the reversing valve group 24 according to the detection result of the gas detection device 3.

[0055] In some embodiments, optionally, the reversing valve group 24 comprises: a first control valve group 242 arranged on the oil pipeline 18 between the rotary motor 12 and the power mechanism 13; a second control valve group 244 arranged on the oil pipeline 18 between the rock drill 14 and the power mechanism 13; and a third control valve group 246 arranged on the oil pipeline 18 between the propulsion oil cylinder 16 and the power mechanism 13.

[0056] In this embodiment, the reversing valve group 24 includes a first control valve group 242, a second control valve group 244, and a third control valve group 246. The first control valve group 242 is arranged on the oil pipeline 18 between the rotary motor 12 and the power mechanism 13, and can control the on-off of the oil pipeline 18 between the rotary motor 12 and the power mechanism 13, and the transmission direction of the hydraulic oil, so that the rotary motor 12 can realize forward rotation and reverse rotation. The second control valve group 244 is arranged on the oil pipeline 18 between the rock drill 14 and the power mechanism 13, and can control the on-off of the oil pipeline 18, and control one of the high-pressure hydraulic oil and the low-pressure hydraulic oil to enter the rock drill 14, thereby realizing high-pressure impact operation or low-pressure impact operation. The third control valve group 246 is arranged on the oil pipeline 18 between the advance oil cylinder 16 and the power mechanism 13, and can control the on-off of the oil pipeline 18, and control whether the hydraulic oil enters from the rodless chamber of the hydraulic cylinder or from the rod chamber, thereby realizing the extension or retraction of the hydraulic cylinder. By arranging the reversing valve group 24 as three control valve groups 2 to control the rotary motor 12, the rock drill 14 and the advance oil cylinder 16 respectively, the rotary motor 12, the rock drill 14 and the advance oil cylinder 16 can work independently, and the working effect can also be ensured.

[0057] In some embodiments, optionally, the pilot valve group 22 includes a pilot rotation valve group 222, a pilot impact valve group 224, and a pilot advance valve group 226. The pilot rotation valve group 222 is connected with the first control valve group 242 and can control the reversing of the first control valve group 242. The pilot impact valve group 224 is connected with the second control valve group 244 and can control the reversing of the second control valve group 244. The pilot advance valve group 226 is connected with the third control valve group 246 and can control the reversing of the third control valve group 246.

[0058] In some embodiments, optionally, the rock drilling hydraulic control system 100 further includes a first overflow valve group 4 arranged between the rock drill 14 and the reversing valve group 24, and a second overflow valve group 5 arranged between the advance oil cylinder 16 and the reversing valve group 24.

[0059] In this embodiment, the rock drilling hydraulic control system 100 further includes the first overflow valve group 4 and the second overflow valve group 5. The first overflow valve group 4 is arranged between the rock drill 14 and the reversing valve group 24, and can eliminate the instantaneous high pressure generated by the hydraulic oil input into the rock drill 14, thereby protecting the hydraulic system. The second overflow valve group 5 is arranged between the advance oil cylinder 16 and the reversing valve group 24, and can eliminate the instantaneous high pressure generated by the hydraulic oil input into the advance oil cylinder 16, thereby protecting the hydraulic system.

[0060] In some embodiments, optionally, the first overflow valve group 4 comprises a high pressure overflow valve 42 for protection when the rock drill 14 is performing high pressure percussion operation and a low pressure overflow valve 44 for protection when the rock drill 14 is performing low pressure percussion operation.

[0061] In some embodiments, optionally, the second overflow valve group 5 comprises a rodless chamber overflow valve 52 connected to the oil port of the rodless chamber and a rod chamber overflow valve 54 connected to the oil port of the rod chamber.

[0062] In this embodiment, by providing the rodless chamber overflow valve 52 and the rod chamber overflow valve 54, protection can be provided when the advance cylinder 16 is extending and retracting.

[0063] In some embodiments, optionally, the rock drilling hydraulic control system 100 further comprises a first pressure sensor 6 disposed between the rotary motor 12 and the reversing valve group 24 and connected to the control device 15 for detecting the pressure of the oil entering the rotary motor 12; and / or a rotation speed sensor 7 connected to the rotary motor 12 and the control device 15 respectively for detecting the rotation speed of the rotary motor 12.

[0064] In this embodiment, the rock drilling hydraulic control system 100 further comprises the first pressure sensor 6. The first pressure sensor 6 is disposed between the rotary motor 12 and the reversing valve group 24 and connected to the control device 15, which can detect the pressure of the oil entering the rotary motor 12 and send it to the control device 15. This arrangement, by providing the first pressure sensor 6 to detect the pressure of the hydraulic oil entering the rotary motor 12, can send a signal to the control device 15 in time when the rotary motor 12 is stuck, so as to disconnect the control valve group 2 through the control device 15, thereby avoiding continuous oil supply to the rotary motor 12 and protecting the system.

[0065] In some embodiments, optionally, the rock drilling hydraulic control system 100 further comprises a rotation speed sensor 7 connected to the rotary motor 12 and the control device 15 respectively for detecting the rotation speed of the rotary motor 12.

[0066] In this embodiment, the rock drilling hydraulic control system 100 further comprises the rotation speed sensor 7. The rotation speed sensor 7 is connected to the rotary motor 12 and the control device 15 respectively, which can detect the rotation speed of the rotary motor 12 and send it to the control device 15, so as to react in time through the control device 15 when the rotary motor 12 is stuck, thereby protecting the system.

[0067] In some embodiments, the rock drilling hydraulic control system 100 further comprises a second pressure sensor 8, which is arranged between the advance cylinder 16 and the reversing valve group 24, and is connected to the control device 15, for detecting the pressure of the oil entering the advance cylinder 16.

[0068] In this embodiment, the rock drilling hydraulic control system 100 further comprises a second pressure sensor 8. The second pressure sensor 8 is arranged between the advance cylinder 16 and the reversing valve group 24, and is connected to the control device 15, and can detect the pressure of the oil entering the advance cylinder 16 and send it to the control device 15. By arranging the second pressure sensor 8, the pressure of the oil delivered to the advance cylinder 16 can be detected, so that when the advance cylinder 16 is stuck, the advance cylinder 16 can be stopped in time by the control device 15.

[0069] In some embodiments, the second pressure sensor 8 is arranged in two, and the two second pressure sensors 8 are respectively communicated with the rodless cavity and the rod cavity of the advance cylinder 16. In this way, the pressure when the advance cylinder 16 extends and the pressure when the advance cylinder 16 retracts can be detected.

[0070] In some embodiments, the rock drilling hydraulic control system 100 further comprises a one-way valve group 9, which is arranged between the rock drill 14 and the reversing valve group 24, for preventing the oil in the rock drill 14 from flowing back to the reversing valve group 24.

[0071] In this embodiment, the rock drilling hydraulic control system 100 further comprises a one-way valve group 9. The one-way valve group 9 is arranged between the rock drill 14 and the reversing valve group 24, and can prevent the oil in the rock drill 14 from flowing back to the reversing valve group 24. It can be understood that, due to the arrangement of the one-way valve group 9, the hydraulic oil can only be delivered from the reversing valve group 24 to the rock drill 14, and the hydraulic oil in the rock drill 14 cannot flow back to the reversing valve group 24 from the one-way valve group 9, so that the impact pressure can be ensured when the rock drill 14 is performing impact work.

[0072] In some embodiments, the one-way valve group 9 comprises a high-pressure one-way valve 92 and a low-pressure one-way valve 94. When the rock drill 14 performs high-pressure impact work, the hydraulic oil is delivered to the rock drill 14 through the high-pressure one-way valve 92. When the rock drill 14 performs low-pressure impact work, the hydraulic oil is delivered to the rock drill 14 through the low-pressure one-way valve 94.

[0073] In some embodiments, the rock drilling hydraulic control system 100 further comprises a pneumatic reversing valve 10, which is arranged between the pilot valve group 22 and the reversing valve group 24, and is connected to the air source 11, for controlling the conduction between the pilot valve group 22 and the reversing valve group 24.

[0074] In this embodiment, the rock drilling hydraulic control system 100 further comprises a gas control reversing valve 10. The gas control reversing valve 10 is arranged between the pilot valve group 22 and the reversing valve group 24, and is connected with the gas source 11, and can control the conduction between the pilot valve group 22 and the reversing valve group 24. It can be understood that when the gas source 11 delivers the protection gas to the rock drill 14, since the gas control reversing valve 10 is connected with the gas source 11, the gas source 11 can drive the gas control reversing valve 10 to open, so that the pilot valve group 22 and the reversing valve group 24 are communicated, so that the reversing valve group 24 can be controlled by the pilot valve group 22 to reverse. If the gas source 11 does not deliver the protection gas to the rock drill 14, the gas control reversing valve 10 will not be opened, so that the pilot valve group 22 and the reversing valve group 24 will not be communicated, so that even if the control device 15 controls the pilot valve group 22 to work, the reversing valve group 24 cannot work, and thus the system cannot operate. The present application can realize double protection by arranging the gas detection device 3 and the gas control reversing valve 10, and when the connecting pipeline between the gas source 11 and the rock drill 14 fails, the pilot valve group 22 can be controlled not to work by the detection result of the gas detection device 3, thereby protecting the system.

[0075] In some embodiments, optionally, the pilot valve group 22 comprises an electric control pilot valve group.

[0076] According to one embodiment of the first aspect of the present application, a rock drilling hydraulic control system 100 is provided, which is provided with a rotation speed sensor 7 and a hydraulic pressure sensor (first pressure sensor 6) on the rotary motor 12, the hydraulic control pilot valve is changed into an electric control pilot valve (pilot valve group 22), and through the signal triggered by the sensor, the electric control pilot valve is transmitted to change the main valve to reverse, so that when the rock drill 14 is stuck during drilling, the rock drill 14 is not drilled and retreated in time, thereby protecting the drill rod. In order to prevent the rock drill 14 from working without nitrogen, a gas pressure sensor (gas detection device 3) is arranged at the air inlet of the rock drill 14, and a gas control reversing valve 10 is arranged at the oil inlet of the electric control pilot valve, and through the protection of the two places, the internal damage of the rock drill 14 can be avoided. A group of high and low pressure impact relief valve groups (first relief valve group 4) are arranged in the rock drilling impact circuit, and when the high and low pressure impact operation occurs, the impact of the rock drill 14 is buffered and protected, and the rock drill 14 itself is well protected. A push relief valve group (second relief valve group 5) is arranged in the rock drilling advancing circuit, and a hydraulic pressure sensor (second pressure sensor 8) is further arranged in the circuit, which can protect the pressure at the moment of sticking, and the drill rod can be retreated in time, thereby protecting the drill rod from being bent. When the drill rod is retreated, the tension is avoided to be too large to make the drill rod separate from the rock drill 14 and remain in the rock hole.

[0077] It can be understood that the present application increases sensors, relief valve groups, reversing valve groups 24 and other elements in the hydraulic system, and under the joint action of these elements, the rock drill 14 is more stable and effective during operation.

[0078] Specifically, the rotary motor 12 circuit is provided with a hydraulic pressure sensor respectively to detect the motor forward or reverse rotation oil pressure. The rock drill impact oil inlet circuit is provided with a high and low pressure impact relief valve group to protect against overpressure during impact operation. The rock drill 14 air inlet is provided with an air pressure sensor to detect the continuous input of nitrogen from the nitrogen source 11 during the operation of the rock drill 14. The electric control pilot valve oil inlet circuit is provided with a pneumatic control reversing valve 10 to ensure that the rock drill impact operation can only be performed when nitrogen enters the rock drill 14. The rock drill advance circuit is provided with a hydraulic pressure sensor to detect pressure increase during jamming, allowing the drill rod to retreat in time or stop in time during retreat. The advance relief valve group prevents pressure from being too high, causing the drill rod to bend or separate from the rock drill 14.

[0079] The working principle of the rock drilling hydraulic control system 100 will be introduced as follows:

[0080] As shown in Figure 1 If the air pressure sensor (air detection device 3) fails to detect the entry of gas into the rock drill 14, the air pressure sensor sends a signal to the electric control pilot valve group, causing the electromagnets DT1, DT2, DT3, DT4, DT5 and DT6 to lose power, thereby preventing the motor rotation, rock drill impact and rock drill advance from operating.

[0081] When the air pressure sensor detects the entry of gas into the rock drill 14, it sends a signal to the control device 15 and controls the electric control pilot valve group, causing the hydraulic control reversing valve group to start working, and the rotary motor 12, rock drill impact and rock drill advance to start working. When the rotary motor 12 is jammed and the motor speed sensor 7 sends a signal, and the pressure sensor in the rotary motor 12 oil inlet circuit reaches the alarm value and sends a signal, the signals act on the electromagnets DT6 and DT5 of the electric control pilot valve group, causing the electromagnet DT6 to lose power and the electromagnet DT5 to gain power. After the electromagnet DT6 loses power, the rock drill advance stops advancing, and the electromagnet DT5 gains power, causing the rock drill to start retreating.

[0082] When the rock drill impact or rotary motor 12 is jammed, the rock drill advance oil circuit hydraulic pressure sensor detection will also rise to the alarm value, sending a signal to the electromagnets DT6 and DT5 of the electric control pilot valve group, causing the electromagnet DT6 to lose power and the electromagnet DT5 to gain power. After the electromagnet DT6 loses power, the rock drill advance stops advancing, and the electromagnet DT5 gains power, causing the rock drill to start retreating.

[0083] When the DT4 of the electric control pilot valve group is electrified, the high pressure single way valve 92(C1) is turned on for the high pressure percussion operation of the rock drill, and the d1 overflow valve of the high and low pressure percussion overflow valve group (the first overflow valve group 4) is overflowed to protect the system when the instantaneous high pressure occurs. When the DT3 of the electric control pilot valve group is electrified, the DT8 of the high and low pressure percussion overflow valve group is electrified, the low pressure single way valve 94(C2) is turned on for the low pressure percussion operation of the rock drill, and the d2 overflow valve of the high and low pressure percussion overflow valve group is overflowed to protect the system when the instantaneous high pressure occurs.

[0084] When the rock drill percussion or rotation motor 12 is stuck, the advancing oil cylinder 16 inlet pressure is increased, in order to ensure that the pressure increase does not cause the drill rod to bend, the d3 overflow valve of the advancing overflow valve group (the second overflow valve group 5) is overflowed to keep the advancing pressure within the pressure range that the drill rod is deformed. When retreating, the electromagnet DT5 of the electric control pilot valve group is electrified, at the same time the DT7 of the advancing overflow valve group is electrified, if stuck occurs, the retreating oil cylinder inlet pressure is increased, in order to ensure that the pressure increase does not cause the drill rod to be separated from the rock drill 14, the d4 overflow valve of the advancing overflow valve group is overflowed to retreat the drill rod within the safe pressure range.

[0085] Wherein, Figure 1 The a1 of the first control valve group 242 is connected with the a1 of the pilot rotation valve group 222, and the b1 of the first control valve group 242 is connected with the b1 of the pilot rotation valve group 222. Similarly, the a2 of the second control valve group 244 is connected with the a2 of the pilot percussion valve group 224, and the b2 of the second control valve group 244 is connected with the b2 of the pilot percussion valve group 224. The a3 of the third control valve group 246 is connected with the a3 of the pilot advancing valve group 226, and the b3 of the third control valve group 246 is connected with the b3 of the pilot advancing valve group 226. C represents the single way valve group 9. A1 represents the inlet oil pipeline when the rotation motor 12 is reversed, and B1 represents the inlet oil pipeline when the rotation motor 12 is rotated. A2 represents the inlet oil pipeline when the rock drill 14 is operated at low pressure, and B2 represents the inlet oil pipeline when the rock drill 14 is operated at high pressure. A3 represents the inlet oil pipeline when the advancing oil cylinder 16 is retracted, and B3 represents the inlet oil pipeline when the advancing oil cylinder 16 is extended. Z represents the oil supply port of the pilot valve group 22 provided by the reversing valve group 24. M represents the pressure measuring port of the reversing valve group 24. P represents the inlet port of the reversing valve group 24. R represents the return port of the reversing valve group 24. T represents the drain port of the reversing valve group 24.

[0086] The key point of the present application is:

[0087] 1. The rotation motor 12 or rock drill percussion stuck is detected by a sensor, and is automatically adjusted by an electric signal transmission control.

[0088] 2. An overflow valve assembly has been added to the oil inlet of the rock drilling impact and rock drilling propulsion systems to promptly eliminate instantaneous high pressure, thus protecting the hydraulic system and the drill rod.

[0089] 3. The addition of a pneumatic directional valve 10 to the oil inlet circuit of the electronically controlled pilot valve and the addition of a sensor to the rock drill 14 ensures that impact operations can only be performed when there is gas protection inside the rock drill 14, thus protecting the interior of the rock drill 14.

[0090] A second aspect of the present invention provides an engineering device comprising: a rock drilling hydraulic control system as described in any of the technical solutions of the first aspect.

[0091] The engineering equipment provided in this application includes the rock drilling hydraulic control system of any of the technical solutions in the first aspect. Since the engineering equipment provided in this application includes the rock drilling hydraulic control system of any of the technical solutions in the first aspect, it also possesses all the beneficial technical effects of the rock drilling hydraulic control system of any of the technical solutions in the first aspect, which will not be elaborated upon here.

[0092] In this invention, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installed," "connected," "linked," and "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "linked" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0093] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0094] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A hydraulic control system for rock drilling, characterized in that The system comprises: an actuator; a power mechanism connected to the actuator through an oil line, for providing power to the actuator; a control valve group arranged on the oil line, for controlling the conduction of the oil line; a gas detection device arranged in the actuator, for detecting the content of protective gas in the actuator; a control device connected to the control valve group and the gas detection device respectively, for controlling the working state of the control valve group according to the detection result of the gas detection device; wherein when the gas detection device detects that the content of the protective gas in the actuator is insufficient, a signal is sent to the control device, and the control device causes the control valve group to be disconnected.

2. The rock drilling hydraulic control system according to claim 1, wherein: the actuator comprises a rotary motor, a rock drill, and a thrust cylinder, and the gas detection device is arranged in the rock drill; the control valve group comprises a pilot valve group and a reversing valve group, and the power mechanism is further used for providing power for the reversing of the reversing valve group, and the pilot valve group is arranged on the oil line between the power mechanism and the reversing valve group, for adjusting the reversing direction of the reversing valve group.

3. The rock drilling hydraulic control system according to claim 2, wherein: the control device is connected to the pilot valve group and the gas detection device respectively, for controlling the working state of the pilot valve group according to the detection result of the gas detection device.

4. The hydraulic rock drilling control system of claim 2, characterized in that, the reversing valve group comprises: a first control valve group arranged on the oil line between the rotary motor and the power mechanism; a second control valve group arranged on the oil line between the rock drill and the power mechanism; a third control valve group arranged on the oil line between the thrust cylinder and the power mechanism.

5. The hydraulic rock drilling control system of claim 2, characterized in that, Further comprising: a first overflow valve group arranged between the rock drill and the reversing valve group; a second overflow valve group arranged between the thrust cylinder and the reversing valve group.

6. The hydraulic rock drilling control system of claim 2, characterized in that, Further comprising: a first pressure sensor arranged between the rotary motor and the reversing valve group, and connected to the control device, for detecting the pressure of the oil entering the rotary motor; and / or a rotation speed sensor connected to the rotary motor and the control device respectively, for detecting the rotation speed of the rotary motor.

7. The hydraulic rock drilling control system of claim 2, characterized in that, Further comprising: a second pressure sensor arranged between the thrust cylinder and the reversing valve group, and connected to the control device, for detecting the pressure of the oil entering the thrust cylinder.

8. The hydraulic rock drilling control system of claim 2, characterized in that, Further comprising: a check valve group arranged between the rock drill and the reversing valve group, for preventing the backflow of the oil in the rock drill to the reversing valve group.

9. A hydraulic rock drilling control system according to any one of claims 2 to 8, characterized in that, Further comprising: a pneumatic reversing valve arranged between the pilot valve group and the reversing valve group, and connected to a gas source, for controlling the conduction between the pilot valve group and the reversing valve group.

10. An engineering apparatus characterised in that, The system comprises: the rock drilling hydraulic control system according to any one of claims 1 to 9.

Images