CN217354959U - Rock drilling propulsion system controlled by electro-hydraulic proportional valve - Google Patents
Rock drilling propulsion system controlled by electro-hydraulic proportional valve Download PDFInfo
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- CN217354959U CN217354959U CN202221158386.5U CN202221158386U CN217354959U CN 217354959 U CN217354959 U CN 217354959U CN 202221158386 U CN202221158386 U CN 202221158386U CN 217354959 U CN217354959 U CN 217354959U
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Abstract
The utility model discloses a rock drilling propulsion system controlled by an electro-hydraulic proportional valve, which comprises a rotary motor and a propulsion assembly, wherein the rotary motor is used for controlling rock drilling propulsion, the rotary motor is controlled by a shuttle valve I, the propulsion assembly is a propulsion motor or a propulsion oil cylinder, and the propulsion motor and the propulsion oil cylinder are both controlled by an electro-hydraulic servo valve; the utility model discloses propulsion control system is simple, only uses electro-hydraulic servo valve and proportion overflow valve, has saved numerous valves, has simplified control system, very big reduction hydraulic line. The propulsion control system is convenient to install and maintain and simple in troubleshooting.
Description
Technical Field
The utility model relates to a rock drill technical field, concretely relates to use drilling propulsion system of electric liquid proportional valve control.
Background
Rock drills are tools used to directly mine rock material. It drills blastholes in the rock formations to deposit explosives to blast the rock to complete the extraction of rock material or other stone work. Furthermore, rock drills may also be used as breakers for breaking hard layers such as concrete. The existing rock drill mostly adopts multiple hydraulic control valves for combined use in the propulsion control, different control pressures are set to correspond to different working conditions, the valve groups have more corresponding relations and complex combination modes, a plurality of valve groups are combined for use, the mechanism is complex, the pipelines are multiple, and the installation and the maintenance are inconvenient.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an use drilling advancing system of electric liquid proportional valve control, propulsion control system is simple, only uses electro-hydraulic servo valve and proportion overflow valve, has saved numerous valves, has simplified control system, very big reduction hydraulic pressure pipeline. The propulsion control system is convenient to install and maintain, and fault troubleshooting is simple.
The purpose of the utility model can be realized by the following technical proposal:
a rock drilling propulsion system controlled by an electro-hydraulic proportional valve comprises a rotary motor and a propulsion assembly, wherein the rotary motor is used for controlling rock drilling propulsion, the rotary motor is controlled by a shuttle valve I, the propulsion assembly is a propulsion motor or a propulsion oil cylinder, and the propulsion motor and the propulsion oil cylinder are controlled by an electro-hydraulic servo valve.
As a further aspect of the present invention: and the first shuttle valve is connected with a pressure relay for detecting the pressure at two sides of the rotary motor.
As a further aspect of the present invention: the propulsion motor is connected with the electro-hydraulic servo valve through a balance valve.
As a further aspect of the present invention: the propulsion oil cylinder is connected with the electro-hydraulic servo valve through a hydraulic lock.
As a further aspect of the present invention: the propulsion motor is connected with a first sensor for sensing the propulsion distance of the propulsion motor, and the propulsion oil cylinder is connected with a second sensor for sensing the propulsion distance.
As a further aspect of the present invention: and the electro-hydraulic servo valve is connected with a second shuttle valve, and the second shuttle valve is connected with a proportional overflow valve.
The utility model has the advantages that:
(1) the pressure signal is converted into an electric signal, the electro-hydraulic servo valve and the proportional overflow valve are directly controlled by the electric signal, propulsion is controlled, propulsion motion is stable, and action response is rapid.
(2) The propulsion control system is simple, only an electro-hydraulic servo valve and a proportional overflow valve are used, a plurality of valve groups are omitted, the control system is simplified, hydraulic pipelines are greatly reduced, the system is convenient to install and maintain, and troubleshooting is simple.
Drawings
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a rotation control assembly of the present invention;
fig. 2 is a schematic structural diagram of the motor control assembly of the present invention;
fig. 3 is a schematic structural diagram of the cylinder control assembly of the present invention.
In the figure: 11. a rotary motor; 12. a shuttle valve I; 13. a pressure relay; 21. a propulsion motor; 22. A balancing valve; 23. a first sensor; 31. a propulsion cylinder; 32. hydraulic locking; 33. a second sensor; 3. An electro-hydraulic servo valve; 4. a second shuttle valve; 5. a proportional overflow valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 3, the present invention relates to a rock drilling propulsion system controlled by an electro-hydraulic proportional valve, which includes a rotary motor 11 for controlling rock drilling propulsion and a propulsion assembly, wherein the propulsion assembly includes a motor control assembly or an oil cylinder control assembly, the motor control assembly uses a propulsion motor 21 as power drive, and the oil cylinder control assembly uses a propulsion oil cylinder 31 as power drive; the rotary motor 11 is controlled by a first shuttle valve 12, and a pressure relay 13 for detecting pressure on both sides of the rotary motor 11 is connected to the first shuttle valve 12.
The first shuttle valve 12 compares the pressures on the two sides of the rock drilling rotary motor 11, selects the pressure on the higher side to transmit to the pressure relay 13, and the controller judges the rotation direction and the working state of the rock drilling rotary motor 11 through the electric signal transmitted back by the pressure relay 13, if the rock drilling rotary motor is in a normal working state or a drill clamping state.
Referring to fig. 1 and 2, the power drive of the propulsion assembly is a propulsion motor 21 or a propulsion cylinder 31, and the propulsion motor 21 and the propulsion cylinder 31 are controlled by an electro-hydraulic servo valve 3. The propulsion motor 21 is connected to the electro-hydraulic servo valve 3 via a balancing valve 22. The propulsion cylinder 31 is connected to the electro-hydraulic servo valve 3 by means of a hydraulic lock 32.
The first sensor 23 for sensing the propelling distance of the propelling motor 21 is connected to the propelling motor 21, and the second sensor 33 for sensing the propelling distance is connected to the propelling cylinder 31. The electro-hydraulic servo valve 3 is connected with a second shuttle valve 4, and the second shuttle valve 4 is connected with a proportional overflow valve 5.
The controller sends a signal to the electro-hydraulic servo valve 3 by judging the working state of the rock drill to control the movement of the propulsion motor 21 or the propulsion cylinder 31. The balance valve 22 and the hydraulic lock 32 play a protection role, the propulsion motor 21 is provided with a brake, and the shuttle valve II 4 is connected with two outlets of the electro-hydraulic servo valve 3 and is connected with the proportional overflow valve 5, thereby controlling the pressure of the propulsion motor 21 or the propulsion oil cylinder 31 in two directions. The proportional overflow valve 5 sets different pressure values according to whether the rock drilling work state is hole drilling or rock drilling, wherein the hole drilling corresponds to a value P1 and the rock drilling corresponds to a value P2.
And the first sensor 23 and the second sensor 33 respectively feed back the propelling distance of the propelling motor 21 or the propelling distance when the propelling cylinder 31 pushes, and the propelling distance is the rock drilling depth.
The drill rod blocking prevention function during drilling operation is realized by setting two values K1 and K2 through a controller, wherein K1 is less than K2. When the feedback value of the pressure relay 13 exceeds the value K1, the controller controls the proportional overflow valve 5 to jump back to P1, the electro-hydraulic servo valve 3 returns to the middle position, and the liquid supply to the propulsion motor 21 or the propulsion oil cylinder 31 is stopped; after a certain time interval, the feedback value of the pressure relay 13 continues to increase and exceeds the value K2, the controller controls the electro-hydraulic servo valve 3 to change the direction, the propulsion motor 21 or the propulsion oil cylinder 31 moves reversely, and the drill rod retracts.
Although an embodiment of the present invention has been described in detail, the description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (6)
1. A rock drilling propulsion system controlled by an electro-hydraulic proportional valve comprises a rotary motor (11) for controlling rock drilling propulsion and a propulsion assembly, and is characterized in that the rotary motor (11) is controlled by a shuttle valve I (12), the propulsion assembly is a propulsion motor (21) or a propulsion oil cylinder (31), and the propulsion motor (21) and the propulsion oil cylinder (31) are controlled by an electro-hydraulic servo valve (3).
2. A rock drilling propulsion system controlled by an electro-hydraulic proportional valve as claimed in claim 1, characterized in that a pressure relay (13) for sensing the pressure on both sides of the rotary motor (11) is connected to the shuttle valve one (12).
3. A rock drilling propulsion system controlled using an electro-hydraulic proportional valve according to claim 1, characterised in that the propulsion motor (21) is connected to the electro-hydraulic servo valve (3) through a balancing valve (22).
4. A rock drilling propulsion system using electro-hydraulic proportional valve control according to claim 3, characterized in that the propulsion cylinder (31) is connected to the electro-hydraulic servo valve (3) through a hydraulic lock (32).
5. A rock drilling propulsion system controlled by an electro-hydraulic proportional valve according to claim 1, characterized in that a first sensor (23) for sensing the propulsion distance of the propulsion motor (21) is connected to the propulsion motor (21), and a second sensor (33) for sensing the propulsion distance is connected to the propulsion cylinder (31).
6. A rock drilling propulsion system controlled by an electro-hydraulic proportional valve according to claim 1, characterized in that a second shuttle valve (4) is connected to the electro-hydraulic servo valve (3), and a proportional overflow valve (5) is connected to the second shuttle valve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221158386.5U CN217354959U (en) | 2022-05-12 | 2022-05-12 | Rock drilling propulsion system controlled by electro-hydraulic proportional valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221158386.5U CN217354959U (en) | 2022-05-12 | 2022-05-12 | Rock drilling propulsion system controlled by electro-hydraulic proportional valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217354959U true CN217354959U (en) | 2022-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221158386.5U Active CN217354959U (en) | 2022-05-12 | 2022-05-12 | Rock drilling propulsion system controlled by electro-hydraulic proportional valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217354959U (en) |
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2022
- 2022-05-12 CN CN202221158386.5U patent/CN217354959U/en active Active
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