CN114321060A - Rock drilling automatic control valve group and control system - Google Patents
Rock drilling automatic control valve group and control system Download PDFInfo
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- CN114321060A CN114321060A CN202111534925.0A CN202111534925A CN114321060A CN 114321060 A CN114321060 A CN 114321060A CN 202111534925 A CN202111534925 A CN 202111534925A CN 114321060 A CN114321060 A CN 114321060A
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- 239000011435 rock Substances 0.000 title claims abstract description 126
- 238000005553 drilling Methods 0.000 title claims abstract description 123
- 239000003921 oil Substances 0.000 claims abstract description 364
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 68
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 239000003595 mist Substances 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims 8
- 238000010276 construction Methods 0.000 abstract description 21
- 238000000034 method Methods 0.000 abstract description 19
- 230000008569 process Effects 0.000 abstract description 17
- 239000002131 composite material Substances 0.000 abstract description 7
- 238000005461 lubrication Methods 0.000 description 9
- 230000007547 defect Effects 0.000 description 5
- 238000012840 feeding operation Methods 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000013016 damping Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention relates to a rock drilling automatic control valve group and a control system, wherein the rock drilling automatic control valve group is provided with a first oil port externally connected with a hydraulic pump, a second oil port externally connected with a hydraulic oil tank, a third oil port externally connected with the hydraulic pump, a sixth oil port externally connected with a rodless cavity of a hydraulic oil cylinder, a seventh oil port externally connected with a rod cavity of the hydraulic oil cylinder, a fourth oil port for adjusting the hydraulic proportion of the rod cavity and the rodless cavity in the hydraulic oil cylinder, a fifth oil port for detecting the oil pressure in the rodless cavity of the hydraulic oil cylinder and an eighth oil port externally connected with impact equipment, and by carrying out composite control on each control valve in the valve group, but the potential risk of automatic identification card borer to make anti-sticking borer control, effectively avoid the card borer risk, promote the efficiency of construction, improve equipment life solves the drilling process and easily appears the card borer accident, and degree of automation is low, the technical problem that operating strength is big.
Description
Technical Field
The invention relates to the technical field of driving control of rock drilling equipment, in particular to a rock drilling automatic control valve group and a control system.
Background
At present, in the rock drilling construction process, an operator is required to control feeding and returning, rotation, impact, water supply, oil mist lubrication and other operations of equipment, the number of switches or handles to be controlled is large, and if the control time or force is not good, the situation of clamping a drill rod (namely, clamping a drill bit) is easy to occur, the clamping of the drill rod can cause damage or damage of components, time is consumed due to work error, and the construction efficiency is seriously affected. In addition, in the construction process, the operation control contents required by operators are numerous, the labor intensity is high, especially the operations such as water supply and oil mist lubrication cannot be controlled cooperatively, the problems of waste and water accumulation caused by normally open equipment are easy to occur, or the condition of poor lubrication caused by normally closed equipment is easy to occur, so that the service lives of the rock drill and the drill rod are influenced.
Aiming at the problems that the drill rod clamping accident is easy to occur in the rock drilling process in the related technology, the automation degree is low, and the operation strength is high, an effective solution is not provided at present.
Therefore, the inventor provides an automatic rock drilling control valve group and a control system by virtue of experience and practice of related industries for many years, so as to overcome the defects in the prior art.
Disclosure of Invention
The invention aims to provide a rock drilling automatic control valve group and a control system, which can improve the intelligent degree of composite control in the rock drilling construction process, automatically identify the potential risk of drill rod clamping, automatically perform anti-drill rod clamping control, effectively avoid the occurrence of drill rod clamping, improve the construction efficiency and prolong the service life of equipment.
The invention also aims to provide the rock drilling automatic control valve group and the rock drilling automatic control system, which can effectively overcome the defects of high difficulty and high strength of composite control in the rock drilling construction process, effectively reduce the labor intensity of operators and improve the construction efficiency.
The purpose of the invention can be realized by adopting the following technical scheme:
the invention provides a rock drilling automatic control valve group, which is provided with a first oil port externally connected with a hydraulic pump, a second oil port externally connected with a hydraulic oil tank, a third oil port externally connected with the hydraulic pump, a sixth oil port externally connected with a rodless cavity of a hydraulic oil cylinder, a seventh oil port externally connected with a rod cavity of the hydraulic oil cylinder, a fourth oil port for adjusting the hydraulic proportion of the rod cavity and the rodless cavity in the hydraulic oil cylinder, a fifth oil port for detecting the oil pressure in the rodless cavity of the hydraulic oil cylinder and an eighth oil port externally connected with impact equipment, wherein:
the rock drilling automatic control valve group comprises a proportional overflow valve, a first reversing valve, a second reversing valve, a third reversing valve, a fourth reversing valve and a fifth reversing valve, wherein a first oil port is respectively connected with an oil inlet of the first reversing valve and an oil inlet of the second reversing valve, an oil outlet of the second reversing valve is connected with an eighth oil port, an oil return port of the first reversing valve is connected with a second oil port, a first working oil port and a second working oil port of the first reversing valve are respectively connected with a sixth oil port and a seventh oil port, a fourth oil port is respectively connected with an oil inlet of the proportional overflow valve and an oil outlet of the third reversing valve, an oil outlet of the proportional overflow valve is connected with the second oil port, and an oil inlet of the third reversing valve is respectively connected with an oil outlet of the fourth reversing valve and an oil outlet of the fifth reversing valve, an oil inlet of the fourth reversing valve is connected with the seventh oil port and the second oil port respectively, and an oil inlet of the fifth reversing valve is connected with the sixth oil port and the second oil port respectively; the fifth oil port is externally connected with a first pressure sensor, and the fifth oil port is respectively connected with the sixth oil port, the oil inlet of the fifth reversing valve and the first working oil port of the first reversing valve.
In a preferred embodiment of the present invention, the automatic rock drilling control valve set further includes a sixth direction valve, an oil inlet of the sixth direction valve is connected to an oil outlet of the second direction valve, and an oil outlet of the sixth direction valve is connected to the second oil port.
In a preferred embodiment of the present invention, the first direction valve is a three-position four-way direction valve; the second reversing valve, the third reversing valve, the fourth reversing valve, the fifth reversing valve and the sixth reversing valve are two-position two-way electromagnetic reversing valves.
In a preferred embodiment of the present invention, the automatic rock drilling control valve set further includes a first pressure reducing valve disposed between the first oil port and the second directional valve, an oil inlet of the first pressure reducing valve is connected to the first oil port, and an oil outlet of the first pressure reducing valve is connected to an oil inlet of the second directional valve.
In a preferred embodiment of the present invention, the automatic rock drilling control valve set further includes a first damper, a first overflow valve, and a first check valve, an oil port of the first damper is connected to an oil outlet of the second directional valve, an external control port of the first pressure reducing valve is connected to another oil port of the first damper, an oil inlet of the sixth directional valve, an oil inlet of the first overflow valve, and an inlet of the first check valve, respectively, an oil outlet of the first overflow valve is connected to the second oil port, and an outlet of the first check valve is connected to the third oil port.
In a preferred embodiment of the present invention, the automatic rock drilling control valve set further includes a second overflow valve disposed between the second oil port and the sixth direction valve, an oil inlet of the second overflow valve is connected to an oil outlet of the sixth direction valve, and an oil outlet of the second overflow valve is connected to the second oil port.
In a preferred embodiment of the present invention, the automatic rock drilling control valve set further includes a third overflow valve and a fourth overflow valve, an oil inlet of the third overflow valve is connected to the seventh oil port, an oil outlet of the fourth reversing valve, and the second working oil port of the first reversing valve, respectively, and an oil outlet of the third overflow valve is connected to the second oil port; an oil inlet of the fourth overflow valve is respectively connected with the sixth oil port, an oil outlet of the fifth reversing valve and the first working oil port of the first reversing valve, and an oil outlet of the fourth overflow valve is connected with the second oil port.
In a preferred embodiment of the present invention, the automatic rock drilling control valve set further includes a second damper, a third damper and a second check valve, an oil port of the second damper is connected to an oil outlet of the fourth directional valve, and another oil port of the second damper is connected to an oil inlet of the third directional valve and an inlet of the second check valve respectively; and one oil port of the third damper is connected with an oil outlet of the fifth reversing valve, the other oil port of the third damper is respectively connected with an oil inlet of the third reversing valve and an inlet of the second one-way valve, and an outlet of the second one-way valve is connected with the third oil port.
In a preferred embodiment of the present invention, the automatic rock drilling control valve set further includes a second pressure reducing valve and a fifth overflow valve, an oil inlet of the second pressure reducing valve is connected to the first oil port, an oil outlet of the second pressure reducing valve is connected to an oil inlet of the first reversing valve, an external control port of the second pressure reducing valve is respectively connected to an oil inlet of the fifth overflow valve, an inlet of the second check valve, and an oil inlet of the third reversing valve, and an oil outlet of the fifth overflow valve is connected to the second oil port.
The invention provides a control system which comprises a hydraulic pump, a hydraulic oil tank, a hydraulic oil cylinder, an impact device and the automatic rock drilling control valve bank, wherein the hydraulic pump is respectively connected with a first oil port and a third oil port of the automatic rock drilling control valve bank, the hydraulic oil tank is connected with a second oil port of the automatic rock drilling control valve bank, the impact device is connected with an eighth oil port of the automatic rock drilling control valve bank, a sixth oil port and a seventh oil port of the automatic rock drilling control valve bank are respectively connected with a rodless cavity of the hydraulic oil cylinder and a rod cavity of the hydraulic oil cylinder, a fifth oil port of the automatic rock drilling control valve bank is connected with a first pressure sensor, and the first pressure sensor is connected with the rodless cavity of the hydraulic oil cylinder.
In a preferred embodiment of the present invention, the control system further includes a front travel limiting device disposed in front of the rock drilling equipment and a rear travel limiting device disposed behind the rock drilling equipment, the front and rear of the rock drilling equipment are respectively preset with a rock drilling limiting point and a back support limiting point, the front travel limiting device is mounted on the rock drilling limiting point, and the rear travel limiting device is mounted on the back support limiting point.
In a preferred embodiment of the present invention, the impact device is connected to a water pipeline and an oil mist input pipeline, and the water pipeline and the oil mist input pipeline are respectively provided with an electromagnetic ball valve and a seventh directional control valve.
In a preferred embodiment of the present invention, the seventh direction valve is a two-position two-way solenoid valve.
In a preferred embodiment of the present invention, the control system further includes a rotary motor, a second pressure sensor is disposed at a forward oil port of the rotary motor, and the rotary motor is connected to the control system through the multi-way valve.
From the above, the automatic control valve bank and the control system for rock drilling of the invention have the characteristics and advantages that: the rock drilling automatic control valve group is provided with a plurality of oil ports, a first oil port and a third oil port of the rock drilling automatic control valve group are respectively connected with a hydraulic pump, a second oil port is connected with a hydraulic oil tank, an eighth oil port is connected with impact equipment, a sixth oil port and a seventh oil port are respectively connected with a rodless cavity of a hydraulic oil cylinder and a rod cavity of the hydraulic oil cylinder, a fifth oil port is connected with a first pressure sensor, the first pressure sensor is connected with the rodless cavity of the hydraulic oil cylinder, the working state of each reversing valve in the rock drilling automatic control valve group is controlled, then the hydraulic pump can supply oil to the valve group and output the oil to the hydraulic oil cylinder and the impact equipment, the hydraulic oil cylinder is controlled to carry out rock drilling feeding operation, and synchronous operation of rock drilling feeding, rotation, impact, water supply and lubrication can be realized; the intelligent control system has the advantages that the intelligent degree of composite control in the rock drilling construction process is improved, the potential risk of drill rod clamping is automatically identified, the drill rod clamping prevention control is automatically carried out, the occurrence of drill rod clamping is effectively avoided, the construction efficiency is improved, and the service life of equipment is prolonged; the invention can overcome the defects of high difficulty and high intensity of composite control in the rock drilling construction process, effectively reduce the labor intensity of operators and improve the construction efficiency.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention.
Wherein:
FIG. 1: the invention is a structural schematic diagram of the rock drilling automatic control valve group.
FIG. 2: is a structural schematic diagram of the control system of the invention.
FIG. 3: the connection structure of the rotary motor in the control system of the invention is shown.
The reference numbers in the invention are:
1. a proportional relief valve; 2. A third directional control valve;
3. a fourth directional control valve; 4. A third overflow valve;
5. a fourth spill valve; 6. A sixth directional control valve;
7. a first damping; 8. A second directional control valve;
9. a first pressure reducing valve; 10. A first overflow valve;
11. a first check valve; 12. A second overflow valve;
13. a first direction changing valve; 14. A second pressure reducing valve;
15. a fifth overflow valve; 16. A second one-way valve;
17. a second damping; 18. A third damping;
19. a fifth directional control valve; 20. A hydraulic cylinder;
21. an electromagnetic ball valve; 22. A seventh directional control valve;
23. an impact device; 24. A first pressure sensor;
25. a second pressure sensor; 26. A rotary motor;
27. a multi-way valve; p, a first oil port;
t, a second oil port; LS and a third oil port;
G. a fourth oil port; MA1, ground five oil ports;
a1 and a sixth oil port; b1 and a seventh oil port;
a2, eighth oil port.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
The words indicating directions such as left and right in the present invention are based on the directions such as left and right in FIG. 1, and are herein incorporated by reference.
Implementation mode one
As shown in fig. 1 and 2, the present invention provides a rock drilling automatic control valve set, which is provided with a first oil port P, a second oil port T, and a third oil port LS, the hydraulic control system comprises a fourth oil port G, a fifth oil port MA1, a sixth oil port A1, a seventh oil port B1 and an eighth oil port A2, wherein the first oil port P and the third oil port LS are respectively used for being connected with an external hydraulic pump, the second oil port T is used for being connected with an external hydraulic oil tank, the sixth oil port A1 is used for being connected with a rodless cavity of an external hydraulic oil cylinder 20, the seventh oil port B1 is used for being connected with a rod cavity of the external hydraulic oil cylinder 20, the fifth oil port MA1 is used for being connected with an external first pressure sensor 24 and detecting the oil pressure in the rodless cavity of the hydraulic oil cylinder 20, the fourth oil port G is used for adjusting the hydraulic proportion between the rod cavity and the rodless cavity in the hydraulic oil cylinder 20, and the eighth oil port A is used for being connected with an external impact device 23. Wherein: the rock drilling automatic control valve group comprises a proportional overflow valve 1, a first reversing valve 13, a second reversing valve 8, a third reversing valve 2, a fourth reversing valve 3 and a fifth reversing valve 19, wherein a first oil port P is respectively connected with an oil inlet of the first reversing valve 13 and an oil inlet of the second reversing valve 8, an oil outlet of the second reversing valve 8 is connected with an eighth oil port A2, an oil return port of the first reversing valve 13 is connected with a second oil port T, a first working oil port and a second working oil port of the first reversing valve 13 are respectively connected with a sixth oil port A1 and a seventh oil port B1, a fourth oil port G is respectively connected with an oil inlet of the proportional overflow valve 1 and an oil outlet of the third reversing valve 2, an oil outlet of the proportional overflow valve 1 is connected with the second oil port T, an oil inlet of the third reversing valve 2 is respectively connected with an oil outlet of the fourth reversing valve 3 and an oil outlet of the fifth reversing valve 19, an oil inlet of the fourth reversing valve 3 is respectively connected with a seventh oil port B1 and the second oil port T, an oil inlet of the fifth reversing valve 19 is respectively connected with the sixth oil port A1 and the second oil port T; the fifth oil port MA1 is externally connected with the first pressure sensor 24, and the fifth oil port MA1 is respectively connected with the sixth oil port a1, the oil inlet of the fifth direction valve 19 and the first working oil port of the first direction valve 13. Wherein, the first change valve 13 is a three-position four-way change valve; the second reversing valve 8, the third reversing valve 2, the fourth reversing valve 3 and the fifth reversing valve 19 are two-position two-way electromagnetic reversing valves.
In the working process, the working states of the proportional overflow valve 1, the first reversing valve 13, the second reversing valve 8, the third reversing valve 2, the fourth reversing valve 3 and the fifth reversing valve 19 are respectively controlled, so that the hydraulic pump can be controlled to supply oil to the valve bank and output the oil to the hydraulic oil cylinder 20 and the impact equipment 23, the hydraulic oil cylinder 20 is controlled to carry out rock drilling feeding operation, and synchronous operation of rock drilling feeding, rotation, impact, water supply and lubrication can be realized; in the operation process, the oil pressure in a rodless cavity of the hydraulic oil cylinder 20 is monitored in real time through the first pressure sensor 24, and the oil supply amount and the oil return amount are controlled, so that the automatic control of rock drilling feeding and back supporting is realized; the invention can overcome the defects of high difficulty and high intensity of composite control in the rock drilling construction process, effectively reduce the labor intensity of operators and improve the construction efficiency.
In an alternative embodiment of the present invention, as shown in fig. 1 and 2, the rock drilling automatic control valve group further includes a sixth direction valve 6, an oil inlet of the sixth direction valve 6 is connected to an oil outlet of the second direction valve 8, and an oil outlet of the sixth direction valve 6 is connected to the second oil port T. The sixth reversing valve 6 is a two-position two-way electromagnetic reversing valve, and the oil return of the eighth oil port a2 can be controlled by the sixth reversing valve 6 and returned to the hydraulic oil tank connected with the second oil port T.
In an alternative embodiment of the present invention, as shown in fig. 1 and fig. 2, the rock drilling automatic control valve set further includes a first pressure reducing valve 9 disposed between the first oil port P and the second direction valve 8, an oil inlet of the first pressure reducing valve 9 is connected to the first oil port P, and an oil outlet of the first pressure reducing valve 9 is connected to an oil inlet of the second direction valve 8. The oil pressure delivered to the eighth port a2 is regulated by the first pressure reducing valve 9 to ensure proper operation of the impact device 23.
Further, as shown in fig. 1 and 2, the rock drilling automatic control valve group further includes a first damper 7, a first overflow valve 10 and a first check valve 11, an oil port of the first damper 7 is connected with an oil outlet of the second reversing valve 8, an external control port of the first pressure reducing valve 9 is connected with another oil port of the first damper 7, an oil inlet of the sixth reversing valve 6, an oil inlet of the first overflow valve 10 and an inlet of the first check valve 11, an oil outlet of the first overflow valve 10 is connected with a second oil port T, and an outlet of the first check valve 11 is connected with a third oil port LS; a second overflow valve 12 is arranged between the second oil port T and the sixth reversing valve 6, an oil inlet of the second overflow valve 12 is connected with an oil outlet of the sixth reversing valve 6, and an oil outlet of the second overflow valve 12 is connected with the second oil port T. After the oil pressure delivered to the eighth oil port a2 is adjusted by the first pressure reducing valve 9, if there is remaining hydraulic oil, the hydraulic oil may flow back to the third oil port LS through the first check valve 11; if there is a backflow of the oil or an excessive amount of the oil in the eighth port a2, the oil may be returned to the hydraulic tank connected to the second port T through the sixth directional control valve 6 or the first relief valve 10.
In an alternative embodiment of the present invention, as shown in fig. 1 and fig. 2, the rock drilling automatic control valve set further includes a third overflow valve 4, an oil inlet of the third overflow valve 4 is connected to the seventh port B1, an oil outlet of the fourth directional valve 3, and the second working port of the first directional valve 13, respectively, and an oil outlet of the third overflow valve 4 is connected to the second port T. The third overflow valve 4 controls the oil return from the seventh port B1, and returns the oil return to the hydraulic oil tank connected to the second port T.
In an alternative embodiment of the present invention, as shown in fig. 1 and fig. 2, the rock drilling automatic control valve group further includes a fourth overflow valve 5, an oil inlet of the fourth overflow valve 5 is connected to a sixth oil port a1, an oil outlet of the fifth reversing valve 19 and the first working oil port of the first reversing valve 13, respectively, and an oil outlet of the fourth overflow valve 5 is connected to the second oil port T. The fourth overflow valve 5 controls the return oil from the sixth port a1, and returns the return oil to the hydraulic oil tank connected to the second port T.
In an optional embodiment of the present invention, as shown in fig. 1 and 2, the rock drilling automatic control valve set further includes a second damper 17, a third damper 18 and a second check valve 16, an oil port of the second damper 17 is connected to an oil outlet of the fourth directional valve 3, another oil port of the second damper 17 is respectively connected to an oil inlet of the third directional valve 2 and an inlet of the second check valve 16, and oil in a rod cavity of the hydraulic cylinder 20 may sequentially flow through a seventh oil port B1, the fourth directional valve 3, the third damper 18, the second check valve 16 and a third oil port LS and then return to the hydraulic pump; an oil port of the third damper 18 is connected with an oil outlet of the fifth reversing valve 19, another oil port of the third damper 18 is respectively connected with an oil inlet of the third reversing valve 2 and an inlet of the second check valve 16, an outlet of the second check valve 16 is connected with a third oil port LS, and oil in a rodless cavity of the hydraulic cylinder 20 can sequentially flow through the sixth oil port A1, the fifth reversing valve 19, the second damper 17, the second check valve 16 and the third oil port LS and then flow back to the hydraulic pump.
Further, as shown in fig. 1 and 2, the rock drilling automatic control valve group further includes a second pressure reducing valve 14 and a fifth overflow valve 15, an oil inlet of the second pressure reducing valve 14 is connected to the first port P, an oil outlet of the second pressure reducing valve 14 is connected to an oil inlet of the first directional valve 13, an external control port of the second pressure reducing valve 14 is connected to an oil inlet of the fifth overflow valve 15, an inlet of the second check valve 16 and an oil inlet of the third directional valve 2, respectively, and an oil outlet of the fifth overflow valve 15 is connected to the second port T. The oil pressure input into the first reversing valve 13 is regulated through the second reducing valve 14, and the normal work of the first reversing valve 13 is ensured; when the hydraulic oil is excessive, a part of the hydraulic oil may be returned to the hydraulic oil tank connected to the second port T through the fifth relief valve 15.
The automatic control valve group for rock drilling has the characteristics and advantages that:
the rock drilling automatic control valve group can control the working state of each reversing valve in the rock drilling automatic control valve group, further can supply oil to the valve group through a hydraulic pump, and output the oil to a hydraulic oil cylinder 20 and an impact device 23, control the hydraulic oil cylinder 20 to perform rock drilling feeding operation, and can realize synchronous operation of rock drilling feeding, rotation, impact, water supply and lubrication; the internal pressure of the hydraulic oil cylinder 20 can be monitored in real time in the operation process, and the oil supply amount and the oil return amount are controlled, so that the automatic control of rock drilling feeding and back supporting is realized, the potential risk of drill rod clamping can be automatically identified, the drill rod clamping prevention control is automatically carried out, the occurrence of drill rod clamping is effectively avoided, the construction efficiency is improved, and the service life of equipment is prolonged; the invention can overcome the defects of high difficulty and high intensity of composite control in the rock drilling construction process, effectively reduce the labor intensity of operators and improve the construction efficiency.
Second embodiment
As shown in fig. 1 to 3, the present invention provides a control system, which includes a hydraulic pump, a hydraulic oil tank, a hydraulic oil cylinder 20, an impact device 23 and the automatic rock drilling control valve set, wherein the hydraulic pump is respectively connected to a first port P and a third port LS of the automatic rock drilling control valve set, the hydraulic oil tank is connected to a second port T of the automatic rock drilling control valve set, the impact device 23 is connected to an eighth port a2 of the automatic rock drilling control valve set, a sixth port a1 of the automatic rock drilling control valve set is connected to a rodless cavity of the hydraulic oil cylinder 20, a seventh port B1 of the automatic rock drilling control valve set is connected to a rod cavity of the hydraulic oil cylinder 20, a fifth port MA1 of the automatic rock drilling control valve set is connected to a first pressure sensor 24, and the first pressure sensor 24 is connected to a rodless cavity of the hydraulic oil cylinder 20.
In an alternative embodiment of the invention, the control system further comprises a front travel limiting device (not shown) arranged in front of the rock drilling equipment (such as a rock drill) and a rear travel limiting device (not shown) arranged behind the rock drilling equipment, the front of the rock drilling equipment is provided with a rock drilling limiting point in advance, the rear of the rock drilling equipment is provided with a rock backing limiting point in advance, the front travel limiting device is arranged on the rock drilling limiting point, and the rear travel limiting device is arranged on the rock backing limiting point. Rock drilling equipment can trigger leading stroke stop device and rearmounted stroke stop device respectively when carrying out rock drilling and returning the support in-process to control rock drilling equipment and can in time stop the action after contacting stroke stop device, effectively avoid the card borer risk, promote the efficiency of construction, improve equipment's life.
Furthermore, the front travel limiting device and the rear travel limiting device can be travel limiting switches without limitation, detection signal output ends of the travel limiting switches are respectively connected with detection signal receiving ends of the controller, and a control signal output end of the controller is connected with a control end of the rock drilling automatic control valve bank, so that on-off states of all reversing valves in the rock drilling automatic control valve bank can be controlled through the controller.
In an alternative embodiment of the present invention, as shown in fig. 2, the impact device 23 is connected to a water pipe and an oil mist input pipe, the water pipe is provided with an electromagnetic ball valve 21, and the oil mist input pipe is provided with a seventh directional valve 22. Wherein, the seventh direction valve 22 is a two-position two-way electromagnetic valve. By controlling the on-off states of the electromagnetic ball valve 21 and the seventh reversing valve 22, water supply, slag discharge and lubrication can be simultaneously performed.
In an alternative embodiment of the present invention, as shown in fig. 2, the control system further includes a rotary motor 26, a power supply end of the rotary motor 26 is provided with a second pressure sensor 25, the rotary motor 26 is connected with a multi-way valve 27, and the multi-way valve 27 is connected to the control system, so as to control the forward rotation and the reverse rotation of the rotary motor 26.
The control method of the control system of the invention comprises the following steps: when the rock drilling equipment performs rock drilling feeding work, controlling the left electromagnet of the first reversing valve 13 (namely, the three-position four-way reversing valve) to be electrified, the fifth reversing valve 19 to be conducted in an electrified manner, the second reversing valve 8 to be conducted in an electrified manner, and simultaneously controlling the rotary motor 26 to rotate forward, the electromagnetic ball valve 21 to be conducted in an electrified manner, and the seventh reversing valve 22 to be conducted in an electrified manner, wherein the first oil port P and the third oil port LS are respectively connected with a hydraulic pump, the second oil port T is connected with a hydraulic oil tank, the left position of the first reversing valve 13 (namely, the three-position four-way reversing valve) works, and hydraulic oil sequentially passes through the first oil port P, the second reducing valve 14, the first reversing valve 13 and the sixth oil port A1 and then enters the rodless cavity of the hydraulic oil cylinder 20; hydraulic oil in a rod cavity of the hydraulic oil cylinder 20 sequentially passes through the seventh oil port B1, the first reversing valve 13 (namely a three-position four-way reversing valve) and the second oil port T and then enters a hydraulic oil tank, and a piston rod of the hydraulic oil cylinder 20 extends outwards to push the rock drilling equipment to advance, so that rock drilling feeding operation is realized; meanwhile, hydraulic oil also sequentially enters the impact equipment 23 through the first oil port P, the first pressure reducing valve 9, the second reversing valve 8 and the eighth oil port A2 to perform impact operation, and at the moment, the synchronous operation of feeding, rotation, impact, water supply, lubrication and the like of the rock drilling equipment can be realized. Because the first pressure sensor 24 is connected to the fifth port MA1, and the first pressure sensor 24 is connected to the rodless cavity of the hydraulic cylinder 20, when the detected feed pressure (i.e., the oil pressure in the rodless cavity of the hydraulic cylinder 20) exceeds a set threshold, the third reversing valve 2 is controlled to be electrically conducted, the proportional relief valve 1 is electrically conducted, and the redundant oil flows back into the hydraulic oil tank through the second port T, so that the oil pressure in the rodless cavity of the hydraulic cylinder 20 is adjusted to a predetermined pressure; because the second pressure sensor 25 is arranged at the forward oil port of the rotary motor 26, when the second pressure sensor 25 detects that the oil pressure is increased suddenly or reaches a set threshold value, the left electromagnet of the first reversing valve 13 (namely, the three-position four-way reversing valve) is controlled to lose power, when the pressure signal detected by the second pressure sensor 25 returns to normal, the first reversing valve 13 (namely, the three-position four-way reversing valve) is controlled to restore the power-on state of the left electromagnet, after the front stroke limiting device is triggered in the feeding process of the rock drilling equipment, the left electromagnet of the first reversing valve 13 (namely, the three-position four-way reversing valve) is controlled to lose power, the right electromagnet of the first reversing valve 13 (namely, the three-position four-way reversing valve) is controlled to be powered on, meanwhile, the fifth reversing valve 19 is controlled to be powered off, the fourth reversing valve 3 is controlled to be powered on, hydraulic oil enters the rod cavity of the hydraulic oil cylinder 20 after passing through the first oil port P, the second reducing valve 14, the first reversing valve 13 and the seventh oil port B1 in sequence, hydraulic oil in the rodless cavity of the hydraulic oil cylinder 20 sequentially flows back into the hydraulic oil tank through a sixth oil port A1, a first reversing valve 13 (namely a three-position four-way reversing valve) and a second oil port T, and a piston rod of the hydraulic oil cylinder 20 retracts to realize the process of rock drilling and back supporting; meanwhile, the electromagnetic ball valve 21 can be controlled to be disconnected in a power-off mode, and after the backstop triggers the rear stroke limiting device, the electromagnet of the first reversing valve 13 (namely the three-position four-way reversing valve) is controlled to be disconnected in a power-off mode, the fourth reversing valve 3 is disconnected in a power-off mode, the second reversing valve 8 is disconnected in a power-off mode, and the seventh reversing valve 22 is disconnected in a power-off mode. The rock drilling rig starts the adjustment of the next excavation site and repeats the above process into the next working cycle.
The control system of the invention has the characteristics and advantages that:
firstly, the intelligent control of the rock drilling equipment is realized by adopting an electromechanical-hydraulic coupling mode through the control system, the aim of automation of rock drilling construction is fulfilled, the labor intensity of operators is effectively reduced, and the construction efficiency is improved.
The control system is convenient to operate, the rock drilling equipment can be automatically controlled to cooperate with feeding, rotation, slag discharge, lubrication and the like, manual intervention is not needed, water supply can be automatically closed after rock drilling is advanced to a rock drilling limiting point, the rock drilling can return to a support returning limiting point, and then the action is automatically stopped; after the posture adjustment is completed, the next working cycle is started, the risk of jamming the drill rod is automatically prevented in the whole process, and the construction efficiency is obviously improved.
In the control system, the rock drilling automatic control valve bank meets the IP67 protection grade, can integrally meet the temperature environment of-40 ℃ to 46 ℃, has the advantages of strong applicability, high reliability, strong pollution resistance and the like, and can be used in the environment of deep water immersion or muddy water for a long time.
Fourth, this control system controls through hydraulic cylinder 20's piston rod and can accomplish the trompil, possesses trompil automatic control's function, can effectively promote trompil quality and efficiency.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.
Claims (14)
1. The utility model provides a rock drilling automatic control valves, its characterized in that, be provided with the first hydraulic fluid port of external hydraulic pump on the rock drilling automatic control valves, the second hydraulic fluid port of external hydraulic tank, the third hydraulic fluid port of external hydraulic pump, the sixth hydraulic fluid port of external hydraulic cylinder rodless chamber, external seventh hydraulic fluid port that hydraulic cylinder has the pole chamber, right have the pole chamber in the hydraulic cylinder and do not have the fourth hydraulic fluid port that the hydraulic pressure proportion in the pole chamber was adjusted, detect the fifth hydraulic fluid port of hydraulic cylinder rodless intracavity oil pressure and the eighth hydraulic fluid port of external impact equipment, wherein:
the rock drilling automatic control valve group comprises a proportional overflow valve, a first reversing valve, a second reversing valve, a third reversing valve, a fourth reversing valve and a fifth reversing valve, wherein a first oil port is respectively connected with an oil inlet of the first reversing valve and an oil inlet of the second reversing valve, an oil outlet of the second reversing valve is connected with an eighth oil port, an oil return port of the first reversing valve is connected with a second oil port, a first working oil port and a second working oil port of the first reversing valve are respectively connected with a sixth oil port and a seventh oil port, a fourth oil port is respectively connected with an oil inlet of the proportional overflow valve and an oil outlet of the third reversing valve, an oil outlet of the proportional overflow valve is connected with the second oil port, and an oil inlet of the third reversing valve is respectively connected with an oil outlet of the fourth reversing valve and an oil outlet of the fifth reversing valve, an oil inlet of the fourth reversing valve is connected with the seventh oil port and the second oil port respectively, and an oil inlet of the fifth reversing valve is connected with the sixth oil port and the second oil port respectively; the fifth oil port is externally connected with a first pressure sensor, and the fifth oil port is respectively connected with the sixth oil port, the oil inlet of the fifth reversing valve and the first working oil port of the first reversing valve.
2. The rock drilling automatic control valve group as claimed in claim 1, further comprising a sixth reversing valve, wherein an oil inlet of the sixth reversing valve is connected with an oil outlet of the second reversing valve, and an oil outlet of the sixth reversing valve is connected with the second oil port.
3. A rockdrill automatic control valve bank according to claim 2, wherein the first reversing valve is a three-position, four-way reversing valve; the second reversing valve, the third reversing valve, the fourth reversing valve, the fifth reversing valve and the sixth reversing valve are two-position two-way electromagnetic reversing valves.
4. A rock drilling automatic control valve group as recited in claim 2, characterized in that said rock drilling automatic control valve group further comprises a first pressure reducing valve disposed between said first oil port and said second reversing valve, an oil inlet of said first pressure reducing valve is connected with said first oil port, and an oil outlet of said first pressure reducing valve is connected with an oil inlet of said second reversing valve.
5. The rock drilling automatic control valve group according to claim 4, characterized in that the rock drilling automatic control valve group further comprises a first damper, a first overflow valve and a first check valve, wherein an oil port of the first damper is connected with an oil outlet of the second reversing valve, an external control port of the first pressure reducing valve is respectively connected with another oil port of the first damper, an oil inlet of the sixth reversing valve, an oil inlet of the first overflow valve and an inlet of the first check valve, an oil outlet of the first overflow valve is connected with the second oil port, and an outlet of the first check valve is connected with the third oil port.
6. The rock drilling automatic control valve group as claimed in claim 2, further comprising a second overflow valve disposed between the second oil port and the sixth reversing valve, wherein an oil inlet of the second overflow valve is connected to an oil outlet of the sixth reversing valve, and an oil outlet of the second overflow valve is connected to the second oil port.
7. The rock drilling automatic control valve group according to claim 2, characterized in that the rock drilling automatic control valve group further comprises a third overflow valve and a fourth overflow valve, an oil inlet of the third overflow valve is respectively connected with the seventh oil port, an oil outlet of the fourth reversing valve and the second working oil port of the first reversing valve, and an oil outlet of the third overflow valve is connected with the second oil port; an oil inlet of the fourth overflow valve is respectively connected with the sixth oil port, an oil outlet of the fifth reversing valve and the first working oil port of the first reversing valve, and an oil outlet of the fourth overflow valve is connected with the second oil port.
8. The rock drilling automatic control valve group as claimed in claim 2, characterized in that the rock drilling automatic control valve group further comprises a second damper, a third damper and a second check valve, wherein one oil port of the second damper is connected with an oil outlet of the fourth reversing valve, and the other oil port of the second damper is respectively connected with an oil inlet of the third reversing valve and an inlet of the second check valve; and one oil port of the third damper is connected with an oil outlet of the fifth reversing valve, the other oil port of the third damper is respectively connected with an oil inlet of the third reversing valve and an inlet of the second one-way valve, and an outlet of the second one-way valve is connected with the third oil port.
9. The rock drilling automatic control valve group according to claim 8, characterized in that the rock drilling automatic control valve group further comprises a second reducing valve and a fifth overflow valve, an oil inlet of the second reducing valve is connected with the first oil port, an oil outlet of the second reducing valve is connected with an oil inlet of the first reversing valve, an external control port of the second reducing valve is respectively connected with an oil inlet of the fifth overflow valve, an inlet of the second check valve and an oil inlet of the third reversing valve, and an oil outlet of the fifth overflow valve is connected with the second oil port.
10. A control system is characterized by comprising a hydraulic pump, a hydraulic oil tank, a hydraulic oil cylinder, an impact device and the rock drilling automatic control valve group according to any one of claims 1 to 9, wherein the hydraulic pump is respectively connected with a first oil port and a third oil port of the rock drilling automatic control valve group, the hydraulic oil tank is connected with a second oil port of the rock drilling automatic control valve group, the impact device is connected with an eighth oil port of the rock drilling automatic control valve group, a sixth oil port and a seventh oil port of the rock drilling automatic control valve group are respectively connected with a rodless cavity of the hydraulic oil cylinder and a rod cavity of the hydraulic oil cylinder, a fifth oil port of the rock drilling automatic control valve group is connected with a first pressure sensor, and the first pressure sensor is connected with the rodless cavity of the hydraulic oil cylinder.
11. The control system according to claim 10, characterized in that the control system further comprises a front travel limiting device arranged in front of the rock drilling equipment and a rear travel limiting device arranged behind the rock drilling equipment, wherein a rock drilling limiting point and a back support limiting point are preset in front of and behind the rock drilling equipment respectively, the front travel limiting device is installed on the rock drilling limiting point, and the rear travel limiting device is installed on the back support limiting point.
12. The control system according to claim 10, wherein a water pipeline and an oil mist input pipeline are connected to the impact device, and an electromagnetic ball valve and a seventh reversing valve are respectively arranged on the water pipeline and the oil mist input pipeline.
13. The control system of claim 12, wherein the seventh directional valve is a two-position, two-way solenoid valve.
14. The control system of claim 12, further comprising a rotary motor, wherein a second pressure sensor is disposed at a forward oil port of the rotary motor, and the rotary motor is connected to the control system through a multi-way valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111534925.0A CN114321060A (en) | 2021-12-15 | 2021-12-15 | Rock drilling automatic control valve group and control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111534925.0A CN114321060A (en) | 2021-12-15 | 2021-12-15 | Rock drilling automatic control valve group and control system |
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| CN114321060A true CN114321060A (en) | 2022-04-12 |
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| CN202111534925.0A Pending CN114321060A (en) | 2021-12-15 | 2021-12-15 | Rock drilling automatic control valve group and control system |
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| CN201560706U (en) * | 2009-12-23 | 2010-08-25 | 三一重型装备有限公司 | Hydraulic control circuit for rock drill and control system thereof |
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