CN201314211Y - Single-cylinder power-assisted clamp holder - Google Patents
Single-cylinder power-assisted clamp holder Download PDFInfo
- Publication number
- CN201314211Y CN201314211Y CNU2008202280098U CN200820228009U CN201314211Y CN 201314211 Y CN201314211 Y CN 201314211Y CN U2008202280098 U CNU2008202280098 U CN U2008202280098U CN 200820228009 U CN200820228009 U CN 200820228009U CN 201314211 Y CN201314211 Y CN 201314211Y
- Authority
- CN
- China
- Prior art keywords
- oil cylinder
- slip spider
- clamper
- oil
- clamp holder
- 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 provides a single-cylinder power-assisted clamp holder, which comprises slip seats, slips, an oil cylinder body and an cylinder body cap, wherein a piston is connected with a piston rod in the inner cavity of the oil cylinder body; the slip seats are mounted on a sliding track of the clamp holder; auxiliary springs are arranged between the slip seats; the slips are installed in the slip seats; the oil cylinder body is connected with the slip seats through joint bolts; and main springs are arranged among the oil cylinder body, the piston rod and a washer. The utility model utilizes the double action theory of oil cylinders, and adopts a single oil cylinder to fulfill the two functions of loosening and power-assisted clamping of the clamp holder, that is, the thrust force generated by pressure oil entering the cavity with the piston rod realizes the loosening of the clamp holder; and the thrust force generated by pressure oil entering the cavity without the piston rod is superimposed with the tension of the main springs, so as to guarantee a reliable clamping on an in-the-hole drill rod.
Description
Technical field
The utility model relates to a kind of hydraulic single-cylinder power-assisted clamping device, particularly is applicable to the hydraulic gripper on the all-hydraulic drill with interlock function.
Background technology
In the prior art, hydraulic gripper in the past can be divided into normally closed type and two kinds open in usual by its slips at idle state.
The normally closed type clamper clamps by spring, and oil cylinder unclamps.The size of its clamping force depends on the tension force that spring produces.For guaranteeing enough clamping forces, need big specification or more spring.When unclamping clamper, need further compression spring, therefore need the oil cylinder of the big section of configuration or improve opening pressure to produce bigger thrust.So just cause the physical dimension of clamper to increase.Other has a kind of compound clamper, adopts two independent oil cylinders, and an oil cylinder is used to unclamp clamper, a clamping force that is used to increase spring, its complex structure, cost height.
Clamper open in usual with oil cylinder clamp, spring unclamps, simple in structure than normally closed type clamper, but its maximum shortcoming is when the device fails oil pressure disappears, clamping force is disappearance at once also, therefore, it should creep on the rig of nearly horizontal drilling and use.
Hydraulic gripper is as one of main executing agency of all-hydraulic drill, and when the basic demand of its proposition was the clamping drilling rod, action was wanted rapidly, and enough clamping forces are arranged.Specifically, two kinds of situations are arranged again: the one, when unloading the drilling rod screw thread, guarantee not produce relative slip between the drilling rod that is held and the slips.When drilling tool has the interlock function, require the opening and closing movement of clamper and chuck to coordinate, to guarantee all the time that promptly one of them clamps drilling rod after, another mechanism unclamps again.The 2nd, when oil pressure disappeared suddenly during rig used, clamper should be able to promptly be clamped drilling rod, effectively prevents drilling rod slippage or " drilling string not well braked " under the deadweight effect, causes drilling accident easily.This point is being bored vertical or extremely important during high inclination-angle boring.
Summary of the invention
The purpose of this utility model is to overcome above deficiency, provides a kind of opening pressure lower, the single cylinder power-assisted clamper that hydraulic system efficient is high.Usually be fixed on rig and feed the front end of fuselage, be used for fixing in the hole and bore, it combines the big advantage of clamp holder clamping power open in usual that spring clamps the safe and reliable and oil pressure clamping that normally closed type clamper and compound hydraulic gripper etc. are had, and also has compact conformation, easy to assembly simultaneously.
The purpose of this utility model realizes by following measure: single cylinder power-assisted clamper comprises slip spider 7, slip spider 10, slips 11, cylinder block 3 and cylinder body lid 1, it is characterized in that: have piston rod 4 to connect piston 2 in cylinder block 3 inner chambers, slip spider is installed on the clamper slide rail, slips is installed in the slip spider, cylinder block 3 is connected with slip spider 10 by connecting bolt 8, between cylinder block 3 and piston rod 4 and the packing ring 6 main spring 5 is housed, can adjust the size of spring tension by adjusting nut, main spring 5 acts on movable slip spider 7 one ends, and the rodless cavity that forms in the oil cylinder connects oil pressure source.
Be provided with auxiliary spring 9 between the above-mentioned slip spider 10.
Utilize the double acting principle of oil cylinder, adopt single oil cylinder, finish that clamper unclamps and power-assisted clamps two kinds of functions, its primary structure is to use an oil cylinder to finish power-assisted to step up and unclamp two kinds of functions of slips.When pressure oil enters cylinder rod chamber, produce thrust, to realize that clamper unclamps; When entering oil cylinder rodless cavity, pressure oil produces thrust, with the tension force superposition of main spring 5, to guarantee reliably drilling rod in the holes for clamping.
The utility model is on the basis of normally closed type clamper, makes full use of the double acting of oil cylinder, but not two oil cylinders.Determine the tension force of main spring according to the condition of drilling tool not slippage in vertical drilling, the spring that just closely may use small-sized under the situation that can satisfy clamping force is as application of force source, thereby created condition for the appearance and size that reduces clamper.When drilling rod is unloaded in gyrator counter-rotating, there is pressure oil to enter oil cylinder rodless cavity and produces thrust, with the tension force superposition of main spring, to guarantee reliably drilling rod in the holes for clamping.When unclamping, the thrust of oil cylinder only need overcome the tension force of main spring, and opening pressure is lower, has improved the efficient of hydraulic system.On the rig that the interlock function is arranged, this clamper cooperate with oild chuck can guarantee first clamping, after the coordination of unclamping.
The utility model operating principle is: when pressure oil entered cylinder rod chamber, under the effect of pressure oil, piston 2 moved compression main spring 5, by the effect of connecting rod 8 and auxiliary spring 9, movable slip spider 7 is moved to the left simultaneously, and clamper unclamps.When the oil cylinder oil return, under main spring 5 tension force effects, piston 2 moves right, and compresses auxiliary spring 9 simultaneously, and movable slip spider 7 moves right, and makes clamp holder clamping.When gyrator reverses, there is pressure oil to enter oil cylinder rodless cavity and produces thrust, this moment, the clamping force of clamper was the thrust sum of the tension force and the oil cylinder rodless cavity of main spring 5, can clamp drilling rod reliably when guaranteeing shackle.When the gyrator stall, the oil cylinder rodless cavity releasing pressure automatically, thrust disappears, and only keeps the tension force of main spring 5, continues to clamp drilling rod.
Description of drawings
Accompanying drawing of the present utility model has:
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Embodiment 1: with reference to accompanying drawing 1 is an embodiment of the present utility model, this clamper comprises slip spider 7, slip spider 10, slips 11, cylinder block 3 and cylinder body lid 1, there is piston rod 4 to connect piston 2 in cylinder block 3 inner chambers, slip spider is installed on the clamper slide rail, be provided with auxiliary spring 9 between the slip spider, slips is installed in the slip spider, cylinder block 3 is connected with slip spider 10 by connecting bolt 8, between cylinder block 3 and piston rod 4 and the packing ring 6 main spring 5 is housed, can adjust the size of spring tension by adjusting nut, main spring 5 acts on movable slip spider 7 one ends, and the rodless cavity that oil cylinder forms connects oil pressure source.Its primary structure is to use an oil cylinder to finish power-assisted to step up and unclamp two kinds of functions of slips, utilize the double acting principle of oil cylinder, adopt single oil cylinder, finish that clamper unclamps and power-assisted clamps two kinds of functions, when entering oil cylinder rodless cavity, pressure oil produces thrust, with the tension force superposition of main spring 5, to guarantee reliably drilling rod in the holes for clamping.
Claims (2)
1, a kind of single cylinder power-assisted clamper, comprise slip spider (7), slip spider (10), slips (11), cylinder block (3) and cylinder body lid (1), it is characterized in that: have piston rod (4) to connect piston (2) in cylinder block (3) inner chamber, slip spider is installed on the clamper slide rail, slips is installed in the slip spider, cylinder block (3) is connected with slip spider (10) by connecting bolt (8), between cylinder block (3) and piston rod (4) and the packing ring (6) main spring (5) is housed, main spring (5) acts on movable slip spider (7) one ends, and the rodless cavity that oil cylinder forms connects oil pressure source.
2, single cylinder power-assisted clamper according to claim 1 is characterized in that being provided with between the described slip spider (10) auxiliary spring (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202280098U CN201314211Y (en) | 2008-12-25 | 2008-12-25 | Single-cylinder power-assisted clamp holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202280098U CN201314211Y (en) | 2008-12-25 | 2008-12-25 | Single-cylinder power-assisted clamp holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201314211Y true CN201314211Y (en) | 2009-09-23 |
Family
ID=41126004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202280098U Expired - Fee Related CN201314211Y (en) | 2008-12-25 | 2008-12-25 | Single-cylinder power-assisted clamp holder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201314211Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196469A (en) * | 2014-08-27 | 2014-12-10 | 桂林市华力重工机械有限责任公司 | Drill rod clamp mechanism |
| CN105317386A (en) * | 2014-06-25 | 2016-02-10 | 上海金泰工程机械有限公司 | Single-oil-cylinder automatic-resetting drill rod holder |
-
2008
- 2008-12-25 CN CNU2008202280098U patent/CN201314211Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317386A (en) * | 2014-06-25 | 2016-02-10 | 上海金泰工程机械有限公司 | Single-oil-cylinder automatic-resetting drill rod holder |
| CN104196469A (en) * | 2014-08-27 | 2014-12-10 | 桂林市华力重工机械有限责任公司 | Drill rod clamp mechanism |
| CN104196469B (en) * | 2014-08-27 | 2016-03-16 | 桂林市华力重工机械有限责任公司 | A kind of drill steel clamping mechanism |
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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: 20090923 Termination date: 20121225 |