CN200952363Y - Hydraulic clamp for gas drainage drilling machine - Google Patents
Hydraulic clamp for gas drainage drilling machine Download PDFInfo
- Publication number
- CN200952363Y CN200952363Y CN 200620111455 CN200620111455U CN200952363Y CN 200952363 Y CN200952363 Y CN 200952363Y CN 200620111455 CN200620111455 CN 200620111455 CN 200620111455 U CN200620111455 U CN 200620111455U CN 200952363 Y CN200952363 Y CN 200952363Y
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- China
- Prior art keywords
- slips
- base
- drainage
- gas extraction
- base plate
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- Expired - Lifetime
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Abstract
A hydraulic clamp holder for a firedamp pump drainage drill comprises a base seat 11, a bracket 6, a slip 4 and a hydrocylinder 2. The bracket 6 is arranged with a base plate 6a and two lateral plates 6b and 6c, which are fixedly weld on the base seat 6 with the same inclination angles. The cross section of the bracket 6 is in equilateral triangle shape generally. The base plate 6a is arranged on the base seat 11 by screw bolts 1. The base plate 6a of the bracket 6 and the two lateral plates 6b and 6c are arranged with the hydrocylinders 2 by screw nuts 5. The piston rod of each hydrocylinder 2 is correspondingly connected with a slip 4. Three slips are distributed in a circle circumference evenly and the geometrical centers of the clamping parts of the three slips are coincident with each other. The utility model has the advantages of more reliable holding of the drill pipe, usage safety, less driller vibration, adjustable center height of the holder, convenient and fast dismounting operation of the slips and online adjustment of the drill pipe center in usage.
Description
Technical field
The utility model belongs to the drilling equipment technical field of soil layer or rock, specifically, relates to a kind of hydraulic gripper for gas extraction, drainage and discharge driller.
Background technology
Gas extraction, drainage and discharge driller is mainly used in and bores gas exhaust discharge hole, fluid injection fire-fighting hole, coal-bed flooding hole, protrusion-dispelling pressure relief vent, geological prospecting hole or other engineering hole under the coal mine, hydraulic gripper is the critical component in the rig, be installed in the frame front end, be used for drilling rod guiding and clamping drilling rod.As shown in Figure 1, traditional hydraulic gripper for gas extraction, drainage and discharge driller mainly is made of base 11, housing 15, piston 16 and slips 4, slips 4 is installed on the piston 16, in housing 15, be symmetrically set with two pistons 16 and two slips 4, the retaining part of slips 4 is semicircular arc, its operating principle is: about two slips 4 under the hydraulic oil effect, does mobilely in opposite directions by piston 16 separately, finish the clamping of drilling rod or unclamp.Because housing 15 is the mounting bracket of slips 4, it is again the hydraulic jack of piston 16, need to be provided with sealing ring 18 between piston 16 and housing 15 inwalls and between end cap 17 and the housing 15, in use sealing ring 18 lost efficacy easily and caused leakage, made the clamping force of slips 4 not reach design load, added and had only symmetrical two slips 4 in the housing 15, slips 4 only acts on the drilling rod from both direction, frictional force between them is less, thereby causes clamping unreliable, easily causes security incident; It is synchronous that the motion of two slips 4 is difficult to reach, the center and the drill power head center of usually causing clamper two slips 4 to form are inconsistent, cause the drilling rod center of the drilling rod of interpolation and clamp holder clamping inconsistent, the centering difficulty, simultaneously, also the connecting thread between the destructible drilling rod has increased the vibration of rig, even drilling rod is fractureed.In addition, slips 4 is positioned at housing, the dismounting inconvenient operation of slips 4.
The utility model content
It is reliable that problem to be solved in the utility model provides a kind of clamping, safe in utilization, and rig vibration is little, and the dismounting of slips is hydraulic gripper for gas extraction, drainage and discharge driller more easily.
For solving the problems of the technologies described above, hydraulic gripper for gas extraction, drainage and discharge driller of the present utility model includes base and slips, and support is installed on the base, three slips that are circularly and evenly distributed are installed on support, and all independently hydraulic jack is coupled to there being one for each slips.
Owing to adopt three slips to be used on the drilling rod at the masterpiece of circumferencial direction with identical size, slips is bigger to the frictional force that drilling rod produces, and the geometric center of three slips retaining parts of easier assurance overlaps with the drill power head center, reduces the vibration of rig, avoids drilling rod to be fractureed.The hydraulic jack that three slips are used dependable performance respectively independently guaranteed the constant of clamping force, thereby the power of guaranteeing to act in the use on the drilling rod can reach design load all the time as power source.
As preference, above-mentioned support has a base plate and two side plates, biside plate is fixed on the base plate with identical inclination angle, three slips are installed in respectively on base plate and two side plates, the geometric center of three slips retaining parts overlaps, and the support cross section is equilateral triangle substantially, and is simple in structure, easy for installation, the more convenient operation of dismounting slips.
As another preference, be provided with wedge between above-mentioned base and the support, one end of wedge is extended with journal stirrup, be connected with the adjusting bolt with nut on the journal stirrup, one end of adjusting bolt matches with the screwed hole on the base, and bolt is regulated in rotation, by the ramp effect between wedge and frame bottom or the base, just can play the effect of regulating the clamper centre-height, to adapt to the variation at drilling rod center in the use.
The beneficial effects of the utility model are: reliable clamping, and safe in utilization, the clamper centre-height is adjustable, and the vibration of rig is little, and the dismounting of slips is easy to operate, quick.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the structural representation of traditional rig with hydraulic gripper.
Fig. 2 is a structural representation of the present utility model.
Fig. 3 is the A-A sectional view of Fig. 2.
Fig. 4 is the schematic cross-sectional view of arc slips 4 among the embodiment.
Fig. 5 is the schematic cross-sectional view of V-arrangement slips 4 among the embodiment.
The specific embodiment
As Fig. 2, shown in Figure 3, hydraulic gripper for gas extraction, drainage and discharge driller of the present utility model, by base 11, support 6, slips 4 and hydraulic jack 2 are formed, support 6 has a base plate 6a and two side plate 6b, 6c, biside plate 6b is weldingly fixed on the base plate 6a with identical inclination angle with 6c, support 6 cross sections are equilateral triangle substantially, the base plate 6a of support 6 is installed on the base 11 by bolt 1, base plate 6a and two side plate 6b, with bolt 5 hydraulic jack 2 is installed respectively on the 6c, the piston rod correspondence of each hydraulic jack 2 is connected with a slips 4, three slips 4 are circularly and evenly distributed, and the geometric center of three slips 4 retaining parts overlaps.
Fig. 3 illustrates between base 11 and the support 6 and is provided with wedge 9, one end of wedge 9 is extended with journal stirrup 13, be connected with adjusting bolt 7 with nut 14 on the journal stirrup 13, one end of adjusting bolt 7 matches with the screwed hole on the base 11, bolt 7 is regulated in rotation, by the ramp effect between wedge 9 and support 6 bottoms or the base 11, just can play the effect of regulating the clamper centre-height, to adapt to the variation at drilling rod center in the use.
As shown in Figure 4, the retaining part of slips 4 becomes arcwall face, its radius is less than the drilling rod radius, arcwall face is provided with transverse concave groove 4a, transverse concave groove 4a has increased the frictional force of slips 4 with drilling rod, simultaneously make that also the dirt on drilling rod surface is held, guaranteed that also slips 4 and drilling rod are that rigidity contacts, to guarantee that chucking power is enough big.As shown in Figure 5, the retaining part cross section of slips 4 also can become V-arrangement, or makes the shape that other is convenient to reliable clamping.
The two ends that Fig. 2 illustrates support 6 are equipped with cover plate 8 and 10, two cover plates 8 and 10 pilot hole outer end are toroidal, thereby can guarantee that drilling rod enters support 6 smoothly, creeping into or getting out in the process, two cover plates 8 and 10 pilot hole play a supportive role to drilling rod, effectively reduce the vibration of drilling rod, realize steadily creeping into getting out.
Claims (6)
1, a kind of hydraulic gripper for gas extraction, drainage and discharge driller, comprise base (11) and slips (4), it is characterized in that: support (6) is installed on the described base (11), three slips (4) that are circularly and evenly distributed are installed on support (6), and all independently hydraulic jack (2) is coupled to there being one for each slips (4).
2, hydraulic gripper for gas extraction, drainage and discharge driller according to claim 1, it is characterized in that: described support (6) has a base plate (6a) and two side plates (6b, 6c), biside plate (6b, 6c) is fixed on the base plate (6a) with identical inclination angle, three slips (4) are installed in respectively on base plate (6a) and two side plates (6b, 6c), and the geometric center of three slips (4) retaining part overlaps.
3, hydraulic gripper for gas extraction, drainage and discharge driller according to claim 1 and 2, it is characterized in that: be provided with wedge (9) between described base (11) and the support (6), one end of wedge (9) is extended with journal stirrup (13), journal stirrup (13) is gone up with nut (14) and is connected with adjusting bolt (7), and an end of adjusting bolt (7) matches with the screwed hole on the base (11).
4, hydraulic gripper for gas extraction, drainage and discharge driller according to claim 3 is characterized in that: the retaining part of described slips (4) is an arcwall face, and its radius is less than the drilling rod radius, and arcwall face is provided with transverse concave groove (4a).
5, hydraulic gripper for gas extraction, drainage and discharge driller according to claim 3 is characterized in that: the retaining part cross section of described slips (4) is V-shaped.
6, hydraulic gripper for gas extraction, drainage and discharge driller according to claim 1 is characterized in that: the two ends of described support (6) are equipped with cover plate (8,10), and the pilot hole outer end of two cover plates (8,10) is toroidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620111455 CN200952363Y (en) | 2006-09-29 | 2006-09-29 | Hydraulic clamp for gas drainage drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620111455 CN200952363Y (en) | 2006-09-29 | 2006-09-29 | Hydraulic clamp for gas drainage drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200952363Y true CN200952363Y (en) | 2007-09-26 |
Family
ID=38810664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620111455 Expired - Lifetime CN200952363Y (en) | 2006-09-29 | 2006-09-29 | Hydraulic clamp for gas drainage drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200952363Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104956028B (en) * | 2012-12-21 | 2017-03-08 | 阿特拉斯·科普柯凿岩设备有限公司 | For the clamper of upsilonstring components manipulation device, for manipulating method, upsilonstring components device and the rock drilling machine of control clamper |
| CN115095285A (en) * | 2022-08-26 | 2022-09-23 | 桥封科技(成都)有限公司 | Pipe column clamping tile |
-
2006
- 2006-09-29 CN CN 200620111455 patent/CN200952363Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104956028B (en) * | 2012-12-21 | 2017-03-08 | 阿特拉斯·科普柯凿岩设备有限公司 | For the clamper of upsilonstring components manipulation device, for manipulating method, upsilonstring components device and the rock drilling machine of control clamper |
| US9732568B2 (en) | 2012-12-21 | 2017-08-15 | Atlas Copco Rock Drills Ab | Gripper for a drill string component handling device, method for manoeuvring a gripper, drill string component device and rock drill rig |
| CN115095285A (en) * | 2022-08-26 | 2022-09-23 | 桥封科技(成都)有限公司 | Pipe column clamping tile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20070926 Effective date of abandoning: 20060929 |