CN216734242U - Brake control system of rotary drill rig and rotary drill rig - Google Patents
Brake control system of rotary drill rig and rotary drill rig Download PDFInfo
- Publication number
- CN216734242U CN216734242U CN202220509379.9U CN202220509379U CN216734242U CN 216734242 U CN216734242 U CN 216734242U CN 202220509379 U CN202220509379 U CN 202220509379U CN 216734242 U CN216734242 U CN 216734242U
- Authority
- CN
- China
- Prior art keywords
- brake
- valve
- control system
- drill rig
- hydraulic pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a brake control system of a rotary drill rig and the rotary drill rig, and belongs to the field of engineering machinery. The brake control system of the roller bit drill comprises: the hydraulic control system comprises a first hydraulic pump, a mode control valve and a brake device, wherein the first hydraulic pump is connected with the brake device through the mode control valve; a check valve is arranged on an oil path between the first hydraulic pump and the mode control valve; and a braking unlocking electromagnetic valve is arranged on an oil path between the mode control valve and the brake device. The system solves the problems of unstable brake pressure and slope slipping of the rotary drill. The provided roller bit drilling machine comprises the brake control system of the roller bit drilling machine, the brake pressure is stable, and the roller bit drilling machine is not prone to slipping.
Description
Technical Field
The utility model relates to the field of engineering machinery, in particular to a brake control system of a rotary drill rig and the rotary drill rig.
Background
At present, in the process of mining surface mines, roller cone drilling machines are generally adopted to drill large blast holes. The roller-bit drill mainly has two working modes, namely a drilling mode and a walking mode. The hydraulic system of the roller-bit rig is switched between two modes through a mode control solenoid valve, and the default state is a drilling mode. When the drilling machine is ready to walk, the mode control electromagnetic valve is electrified, the crawler brake function is unlocked, and the drilling machine can walk.
The roller-bit rig adopts the track to walk, because the operational environment of roller-bit rig is complicated, often can appear because the brake unblock pressure unstability leads to the brake block to wear seriously to and the swift current car scheduling problem easily, cause the equipment to damage, cause the incident, consequently the requirement that corresponds brake control system is higher.
SUMMERY OF THE UTILITY MODEL
The technical problem is as follows: the utility model provides a brake control system of a roller drill, which can stabilize brake unlocking pressure and avoid sliding, and the roller drill using the brake control system.
The technical scheme is as follows: in a first aspect, the present invention provides a brake control system for a roller cone drill, comprising: the hydraulic control system comprises a first hydraulic pump, a mode control valve and a brake device, wherein the first hydraulic pump is connected with the brake device through the mode control valve; a check valve is arranged on an oil way between the first hydraulic pump and the mode control valve; a braking unlocking electromagnetic valve is arranged on an oil way between the mode control valve and the brake device;
when the drilling machine needs to walk, the mode control valve is switched to a drilling machine walking mode, hydraulic oil is conducted through the braking unlocking electromagnetic valve to enter the braking device, and the braking device is unlocked.
Compared with the existing brake control system of the rotary drill, the brake control system of the rotary drill is additionally provided with the one-way valve, so that the problem of unstable brake unlocking pressure is solved; and a brake unlocking electromagnetic valve is added, so that the problem that the roller-bit drill is easy to slide down a slope is solved.
Furthermore, the braking and unlocking electromagnetic valve is connected with an oil tank of the rotary drill, and a throttler is arranged on an oil path between the braking and unlocking electromagnetic valve and the oil tank. Through setting up the flow controller, eliminated when the rig stops suddenly in the walking process, the pressure impact that the brake unblock pressure release brought in the twinkling of an eye avoids causing track inefficacy from this.
Further, the braking unlocking electromagnetic valve is a two-position three-way electromagnetic valve.
Furthermore, a double-speed electromagnetic valve is further arranged in the brake control system, an inlet of the double-speed electromagnetic valve is connected with the brake unlocking electromagnetic valve, and an outlet of the double-speed electromagnetic valve is respectively connected with a control port of a hydraulic walking motor of the rotary drill rig, so that double-speed walking control of the rotary drill rig is realized. When the ground is flat, the drilling machine runs at a high speed; when the ground conditions are poor or the drilling machine moves in a narrow space, the drilling machine walks at a slow speed, and is safer and more accurate.
Further, the double-speed electromagnetic valve is a two-position three-way electromagnetic valve.
Further, the first hydraulic pump is an auxiliary hydraulic pump of the rotary drill rig.
In a second aspect, the utility model further provides a roller bit drilling machine, the roller bit drilling machine comprises the brake control system of the roller bit drilling machine, the brake is stable, and the roller bit drilling machine is not prone to slipping, so that the abrasion of brake pads is reduced, and potential safety hazards are reduced.
Drawings
FIG. 1 is a schematic block diagram of a brake control system of a conventional rotary drill rig;
FIG. 2 is a schematic block diagram of a brake control system of a roller cone drill according to an embodiment of the utility model.
The figure shows that: 1. an oil tank; 2. a first hydraulic pump; 3. a fan motor; 4. a mode control valve; 5. a first brake device; 6. a second brake device; 7. a second hydraulic pump; 8. a third hydraulic pump; 9. a pressure reducing valve; 10. a one-way valve; 11. a brake unlocking solenoid valve; 12. a restrictor; 13. a double-speed electromagnetic valve; 14. a first hydraulic travel motor; 15. and a second hydraulic travel motor.
Detailed Description
The utility model is further described with reference to the following examples and the accompanying drawings. It is noted that the terms "first", "second", and the like in the embodiments are for convenience of description only and are not to be construed as limiting the number, nature, and the like.
FIG. 1 shows a schematic block diagram of a brake control system of a conventional rotary drill rig. Referring to fig. 1, the hydraulic oil at the outlet of the first hydraulic pump 2 is divided into two paths, the first path enters the fan motor 3 to drive the fan to rotate, and the other path provides control oil to the track brake system and enters the brake device. The control oil passes through the pressure reducing valve 9 and the mode control valve 4 in sequence and enters a drilling mode control part or a control cavity of a brake device. The first hydraulic pump 2 is an auxiliary hydraulic pump of a rotary drill rig, and the mode control valve 4 is a two-position four-way electromagnetic valve. And when the oil pump is in a default state, the mode control valve 4 is not electrified, and the oil is controlled to enter a drilling mode control part to activate the drilling function of the roller-bit drill. When the mode control valve 4 is electrified, control oil enters a control cavity of the brake device, the brake function of the roller-bit drilling machine is unlocked, and the walking function of the drilling machine is activated.
However, the existing brake control system of the roller cone drilling machine has many problems in the actual working process, wherein the main problems are as follows:
(1) the problem of unstable braking: in the walking process, when walking resistance is suddenly increased or an engine switch is manually switched to a low idle speed, the engine has the instant speed drop phenomenon, so that the output flow of the first hydraulic pump 2 is instantly reduced, and the outlet pressure of the first hydraulic pump 2 is instantly reduced to a small value. The brake unlocking pressure is reduced instantaneously, the instant suction phenomenon of the brake pad occurs, and the walking hydraulic pump does not stop the output flow, so that huge impact force is generated to act on the brake device, and the crawler belt is damaged.
(2) The problem of slope slipping is as follows: in a walking mode, the mode control valve 4 is electrified in advance to unlock a brake device, then the walking hydraulic pump outputs flow to drive the drilling machine to walk, and time difference exists between the two actions. Once the brakes are unlocked, the drill may slip uncontrollably, especially when the drill is on a slope, presenting a significant safety hazard.
The present invention addresses the above-mentioned problems and provides a solution. FIG. 2 shows a functional block diagram of a brake control system of a roller cone drill in an embodiment of the present invention. Referring to fig. 2, in an embodiment, a brake control system of a rotary drill includes a first hydraulic pump 2, a mode control valve 4, and a brake device, wherein the first hydraulic pump 2 is connected to the brake device through the mode control valve 4. A check valve 10 is provided on an oil path between the first hydraulic pump 2 and the mode control valve 4, and a brake release solenoid valve 11 is provided on an oil path between the mode control valve 4 and the brake device. Therefore, the hydraulic oil at the outlet of the first hydraulic pump 2 is divided into two paths to the direction, the first path enters the fan motor to drive the fan to rotate, and the other path provides control oil for the track brake system. The control oil enters a control cavity of the brake device through a pressure reducing valve 9, a one-way valve 10, a mode control valve 4 and a brake unlocking electromagnetic valve 11 in sequence.
In the roller drill, since there are two tracks, the brake device includes a first brake device 5 and a second brake device 6, the traveling hydraulic pump includes a second hydraulic pump 7 and a third hydraulic pump 8, and the traveling hydraulic motor includes a first hydraulic traveling motor 14 and a second hydraulic traveling motor 15. The first brake device 5 is used for controlling the braking or unlocking state of a first hydraulic walking motor 14 of the roller-bit drill, the second brake device 6 is used for controlling the braking or unlocking state of a second hydraulic walking motor 15 of the roller-bit drill, and the braking and unlocking electromagnetic valve 11 is respectively connected with the first brake device 5 and the second brake device 6. After the first brake device 5 and the second brake device 6 are unlocked, the second hydraulic pump 7 drives the first hydraulic walking motor 14 to rotate, the third hydraulic pump 8 drives the second hydraulic walking motor 15 to rotate, and the drilling machine walks.
Compared with the existing brake control system of the roller bit drilling machine, the embodiment of the utility model is improved in two aspects. Firstly, a one-way valve 10 is arranged on an oil path between the first hydraulic pump 2 and the mode control valve 4, so that the problem of unstable brake pressure is solved. When the pressure at the outlet of the first hydraulic pump 2 drops instantly, the one-way valve 10 can keep the pressure inside the brake device in the closed channel, so that the brake unlocking pressure is not influenced, and the failure of a track of the drilling machine is avoided.
Secondly, a brake unlocking electromagnetic valve 11 is arranged on an oil path between the mode control valve 4 and the brake device, the brake unlocking electromagnetic valve 11 is a two-position three-way electromagnetic valve, and the problem of slope slipping is solved by additionally arranging the brake unlocking electromagnetic valve 11. In the traveling mode, the mode control valve 4 is energized in advance to deliver pressure oil to the inlet of the brake release solenoid valve 11. But the brake release solenoid valve 11 normally closes the hydraulic oil passage to the brake device. When the walking hydraulic pump starts to output flow to drive the drilling machine to walk, the brake unlocking electromagnetic valve 11 is electrified at the same time, and the brake device is unlocked at the moment. The two actions occur simultaneously, so that the drilling machine cannot slide, the slope sliding is avoided, and the potential safety hazard is reduced.
Further, when the drilling machine stops suddenly in the walking process, the walking hydraulic pump and the brake unlocking electromagnetic valve 11 are powered off simultaneously, and the brake unlocking pressure is released instantly. The reset time of the swash plate of the walking hydraulic pump is longer than that of the valve core of the electromagnetic valve, so that instant pressure impact to a brake device can occur, and the crawler belt can also be caused to lose efficacy. Therefore, in the embodiment of the present invention, an orifice 12 is provided in the oil passage between the brake-release solenoid valve 11 and the oil tank 1. The throttle 12 is provided to solve the above-mentioned problems, and the throttle 12 can control the time of releasing the unlocking pressure to eliminate the above-mentioned pressure shock.
The existing roller-cone drilling machine does not have a double-speed walking function actually. The double-speed walking is that when the ground is flat, the drilling machine walks at high speed; when the ground conditions are poor or the drilling machine moves in a narrow space, the drilling machine walks at a slow speed, and is safer and more accurate. Therefore, in the embodiment of the present invention, one two-speed solenoid valve 13 is provided, and the two-speed solenoid valve 13 is a two-position three-way solenoid valve. The inlet of the double-speed electromagnetic valve 13 is connected with the braking unlocking electromagnetic valve 11, the outlet is respectively connected with the control ports of the first hydraulic walking motor 14 and the second hydraulic walking motor 15, and the oil drainage port is connected with the oil tank 1. It should be noted that the brake unlocking solenoid valve 11 has two branches, one branch is directly connected to the brake device, and the other branch is provided with the two-speed solenoid valve 13. A two-position three-way double-speed electromagnetic valve is added, control oil is taken from a brake system, and the double-speed walking function of the drilling machine is realized. When the double-speed electromagnetic valve 13 is not electrified, hydraulic control oil only enters a brake device, and the drilling machine is in a low-speed walking mode; when the double-speed electromagnetic valve is electrified, hydraulic control oil simultaneously enters the brake device and the control ports of the two hydraulic traveling motors, and the drilling machine is in a high-speed traveling mode.
The above examples are only preferred embodiments of the present invention, it should be noted that: it will be apparent to those skilled in the art that various modifications and equivalents can be made without departing from the spirit of the utility model, and it is intended that all such modifications and equivalents included within the scope of the claims be interpreted as included within the scope of the utility model.
Claims (7)
1. A brake control system for a rotary drill rig, comprising: the hydraulic control system comprises a first hydraulic pump (2), a mode control valve (4) and a brake device, wherein the first hydraulic pump (2) is connected with the brake device through the mode control valve (4); a one-way valve (10) is arranged on an oil path between the first hydraulic pump (2) and the mode control valve (4); a brake unlocking electromagnetic valve (11) is arranged on an oil way between the mode control valve (4) and the brake device;
when the drilling machine needs to walk, the mode control valve (4) is switched to a drilling machine walking mode, hydraulic oil is conducted through the brake unlocking electromagnetic valve (11) to enter the brake device, and the brake device is unlocked.
2. The brake control system of the roller cone drilling machine according to claim 1, characterized in that the brake unlocking electromagnetic valve (11) is connected with an oil tank (1) of the roller cone drilling machine, and a throttle (12) is arranged on an oil path between the brake unlocking electromagnetic valve (11) and the oil tank (1).
3. The brake control system of the roller-cone drill rig according to claim 1, characterized in that the brake unlocking solenoid valve (11) is a two-position three-way solenoid valve.
4. The brake control system of the rotary drill rig according to claim 1, wherein a two-speed electromagnetic valve (13) is further arranged in the brake control system, an inlet of the two-speed electromagnetic valve (13) is connected with the brake unlocking electromagnetic valve (11), and an outlet of the two-speed electromagnetic valve is respectively connected with a control port of a hydraulic walking motor of the rotary drill rig.
5. The brake control system of the rotary drill rig according to claim 4, wherein the two-speed solenoid valve (13) is a two-position three-way solenoid valve.
6. Brake control system of a roller cone drill rig according to any of claims 1-5, characterized in that the first hydraulic pump (2) is an auxiliary hydraulic pump of a roller cone drill rig.
7. A roller cone drill rig comprising a brake control system of a roller cone drill rig according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220509379.9U CN216734242U (en) | 2022-03-09 | 2022-03-09 | Brake control system of rotary drill rig and rotary drill rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220509379.9U CN216734242U (en) | 2022-03-09 | 2022-03-09 | Brake control system of rotary drill rig and rotary drill rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216734242U true CN216734242U (en) | 2022-06-14 |
Family
ID=81921828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220509379.9U Active CN216734242U (en) | 2022-03-09 | 2022-03-09 | Brake control system of rotary drill rig and rotary drill rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216734242U (en) |
-
2022
- 2022-03-09 CN CN202220509379.9U patent/CN216734242U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101649849B (en) | Brake circuit of hydraulic motor | |
| CN104061212B (en) | Electric hydraulic control running system for bracket carrier | |
| CN103807238B (en) | A kind of hydraulic control feeding system and hydraulic control feeding method | |
| CN105485066A (en) | Electro-hydraulic hybrid power drive system of tunneling machine and control method | |
| CN104528555A (en) | Main arm variable amplitude controlling system for crane and crane | |
| CN216734242U (en) | Brake control system of rotary drill rig and rotary drill rig | |
| CN109973452B (en) | Reverse braking control valve for hydraulic traveling system | |
| CN104290731A (en) | Work vehicle and method for controlling work vehicle | |
| CN215634045U (en) | Hydraulic system and paver | |
| CN102996138A (en) | Hydraulic control system of dust removal and outburst prevention integrated heading machine | |
| CN201952155U (en) | Mine winch preventing from magnifying slip | |
| JP2008169912A (en) | Drive control method and drive control device of hydraulically-driven vehicle | |
| CN113266612A (en) | Load sensitive control hydraulic system of pile driver | |
| CN210618141U (en) | Rail clamping rack rail locomotive parking braking system | |
| CN204324770U (en) | There is revolution hydraulic control system and the hoisting crane of sectional control function | |
| CN203783998U (en) | Hydraulic-controlfeeding system | |
| CN102674192A (en) | Mining high-speed slippage preventive winch | |
| CN112797041A (en) | Hydraulic motor bidirectional pressure control system and method thereof | |
| CN220220403U (en) | Auxiliary power-assisted hydraulic cartridge valve group system of seismic source vehicle | |
| CN214945345U (en) | Load sensitive control hydraulic system of pile driver | |
| CN211778303U (en) | Self-walking scissor type overhead working truck hydraulic system integrated control valve group | |
| CN220594561U (en) | Traction locomotive control system and traction locomotive | |
| CN105439018A (en) | Rotary hydraulic control system with segmented control function and crane | |
| CN215927952U (en) | Emergency braking system of engineering machinery vehicle and crawler excavator | |
| CN117267185A (en) | Engineering machinery and energy-saving control system for starting braking of slewing drive mechanism of engineering machinery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |