CN201546692U - Device for avoiding overpressure work of hydraulic drilling machine - Google Patents
Device for avoiding overpressure work of hydraulic drilling machine Download PDFInfo
- Publication number
- CN201546692U CN201546692U CN2009201258053U CN200920125805U CN201546692U CN 201546692 U CN201546692 U CN 201546692U CN 2009201258053 U CN2009201258053 U CN 2009201258053U CN 200920125805 U CN200920125805 U CN 200920125805U CN 201546692 U CN201546692 U CN 201546692U
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- CN
- China
- Prior art keywords
- oil circuit
- overflow valve
- hydraulic
- drilling machine
- work
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a device for avoiding overpressure work of a hydraulic drilling machine. A hydraulic pump (2), a throttle valve (3), a pressure gauge (4), a manual control switch (5) and an actuating element are connected in an oil circuit device in sequence; and the device is characterized in that an overflow valve (7) is arranged between the manual control switch (5) and an oil circuit of the actuating element. Since the overflow valve (7) is arranged between the manual control switch (5) and the actuating element in an oil circuit system, when a drill bit is under the condition of touching a soft coal bed or suddenly cuting off the water supply in the working process of the drilling machine, and the working pressure of the oil circuit rises to a certain limited value, namely, a working value of the overflow valve (7), the operating staff do not take any measures; at the moment, the overflow valve (7) is in operation, the oil circuit automatically releases the pressure, thereby excluding potential safety hazards and ensuring normal work of the hydraulic drilling machine.
Description
Technical field
The utility model relates to the oil pressure control field in hydraulic drill rig field, particularly hydraulic drill rig.
Background technology
In the exploration and mining process in colliery, hydraulic drill rig is widely used.Hydraulic drill rig comprises power section, control section and operating part, the hydraulic control that is used for colliery boring in the prior art partly comprises choke valve and switch, the hydraulic oil that promptly has certain pressure by hydraulic pump output, through the throttle valve control flow, flow to executive component hydraulic cylinder or hydraulic motor acting through switch control again, like this, in boring procedure, when drill bit runs into soft seam or cuts off the water suddenly, slag is difficult for discharging, the drill bit live load increases, and the pressure of oil circuit also increases thereupon, if at this moment the staff does not take measures, drill bit will take place to be thrusted, support around the rig is arrived to or drilling rod is supported curved, cause economic loss, even casualties.
Summary of the invention
At the deficiencies in the prior art, the utility model aims to provide the control device within a kind of limit that oil circuit pressure is controlled at automatically setting.
The technical solution of the utility model: the hydraulic pump in the oil circuit device, choke valve, pressure meter, manpower gauge tap and executive component connect in proper order, it is characterized in that, between the oil circuit of manpower gauge tap and executive component overflow valve are set.
Described executive component is hydraulic cylinder or hydraulic motor.
Owing to be provided with overflow valve between manpower gauge tap in oil piping system and the executive component, when rig in the course of the work, drill bit run into soft seam or the situation of cutting off the water suddenly under, the oil circuit operating pressure raises, be raised to certain limit value after, promptly reach the working value of overflow valve, promptly be that operating personnel do not take measures, overflow valve work at this moment, oil circuit automatically unloading, discharge potential safety hazard, guaranteed the operate as normal of hydraulic drill rig.
Description of drawings
Fig. 1 is the oil piping system figure of prior art;
Fig. 2 is the oil piping system figure of the utility model embodiment 1;
Fig. 3 is the oil piping system figure of the utility model embodiment 2;
In the accompanying drawing: 1-oil sump 2-oil pump 3-choke valve 4-pressure meter 5-manpower gauge tap 6-advances oil cylinder 7-overflow valve 8-hydraulic motor.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, in the oil piping system of prior art hydraulic drill rig, directly connect push action cylinder 6 after the manpower gauge tap 5, when oil circuit pressure raises, must could guarantee that the oil circuit oil pressure is normal by operating manpower gauge tap 5, if operating personnel's this moment are not on duty or do not notice this situation accident that will meet accident.
As shown in Figure 2, this is the utility model embodiment 1.Oil pump 2 is thrown the oil in the oil sump 1 into oil circuit by driven by motor, the pressure size is read by pressure meter 4 in the oil circuit, at first the flow in choke valve 3 control oil channel again through the 5 control work of manpower gauge tap, is provided with overflow valve 7 control oil pressure automatically at manpower gauge tap 5 and 6 of oil cylinders of propelling, rig in the course of the work like this, when load increases suddenly, oil circuit pressure increases, and the working value that reaches overflow valve 7 will automatically unloading, guaranteed the trouble free service of rig, stopped contingency and take place.Overflow valve 7 among the figure is a control overflow valve far away.
As shown in Figure 3, this is the utility model embodiment 2.Its oil piping system figure and embodiment's 1 is basic identical, and just executive component is a hydraulic motor after overflow valve 7.
Selecting for use according to rated pressure of overflow valve determines that can select different model, classification overflow valve for use, overflow valve connecting mode in oil circuit is not limited to embodiment in the utility model oil piping system.
Claims (4)
1. device that prevents the work of hydraulic drill rig superpressure, hydraulic pump in the oil circuit (2), choke valve (3), pressure meter (4), manpower gauge tap (5) and executive component order connect, it is characterized in that, overflow valve (7) is set between the oil circuit of manpower gauge tap and executive component.
2. a kind of device that prevents the work of hydraulic drill rig superpressure according to claim 1 is characterized in that, described overflow valve (7) is a control overflow valve far away.
3. a kind of device that prevents the work of hydraulic drill rig superpressure according to claim 1 is characterized in that, described executive component is for advancing oil cylinder (6)
4. a kind of device that prevents the work of hydraulic drill rig superpressure according to claim 1 is characterized in that, described executive component is hydraulic motor (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201258053U CN201546692U (en) | 2009-11-11 | 2009-11-11 | Device for avoiding overpressure work of hydraulic drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201258053U CN201546692U (en) | 2009-11-11 | 2009-11-11 | Device for avoiding overpressure work of hydraulic drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201546692U true CN201546692U (en) | 2010-08-11 |
Family
ID=42601866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201258053U Expired - Fee Related CN201546692U (en) | 2009-11-11 | 2009-11-11 | Device for avoiding overpressure work of hydraulic drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201546692U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200151A (en) * | 2011-06-14 | 2011-09-28 | 赵铁栓 | Flow control device and method for controlling hydraulic pump to output constant flow |
| CN103015963A (en) * | 2012-11-22 | 2013-04-03 | 浙江盾安精工集团有限公司 | Casing pipe cutter bit protective device of fully slewing drilling machine |
-
2009
- 2009-11-11 CN CN2009201258053U patent/CN201546692U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200151A (en) * | 2011-06-14 | 2011-09-28 | 赵铁栓 | Flow control device and method for controlling hydraulic pump to output constant flow |
| CN102200151B (en) * | 2011-06-14 | 2013-10-30 | 赵铁栓 | Method for controlling hydraulic pump to output constant flow according to flow control device |
| CN103015963A (en) * | 2012-11-22 | 2013-04-03 | 浙江盾安精工集团有限公司 | Casing pipe cutter bit protective device of fully slewing drilling machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20111111 |