CN201474629U - Drilling tool clamping device - Google Patents
Drilling tool clamping device Download PDFInfo
- Publication number
- CN201474629U CN201474629U CN2009203031237U CN200920303123U CN201474629U CN 201474629 U CN201474629 U CN 201474629U CN 2009203031237 U CN2009203031237 U CN 2009203031237U CN 200920303123 U CN200920303123 U CN 200920303123U CN 201474629 U CN201474629 U CN 201474629U
- Authority
- CN
- China
- Prior art keywords
- bearing ring
- force bearing
- drilling tool
- clamping device
- connects
- 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 drilling tool clamping device, which comprises a bracket (1), a clamping body (3), a guide rod (4), a hydraulic cylinder (12), a first force bearing ring (5) and a second force bearing ring (6). The guide rod (4) passes through the bracket (1). One end of the guide rod (4) is connected with the first force bearing ring (5) and at the same time the other end thereof is connected with the second force bearing ring (6). The inner side face of the bracket (1) is connected with at least two lining bodies (2). When sliding downwards, the clamping body (3) draws together towards the center under the guide action of the inclined plane of the lining body (2). The utility model has simple structure and smart design and can prevent the clamped drilling tool from sliding when the work pressure of the hydraulic cylinder is inadequate and the clamping surface is abraded.
Description
Technical field
The utility model belongs to the oil drilling and extracting equipment technical field, relates to a kind of clamping device that is used for drilling tool specifically.
Background technology
Drilling tool clamping device in oil drilling and extracting equipment is used for that drilling rod moves, transportation clamps, keep drilling rod, prevents that drilling rod from waving in moving process, sliding.Present clamping device mainly is made up of hydraulic cylinder and swing arm, and swing arm and hydraulic cylinder all are installed on the big arm of master of manipulator, and wherein swing arm is connected with the big arm of manipulator master by the bearing pin mode, and can be around the rotational that connects bearing pin; The tail end of hydraulic cylinder connects by the bearing pin mode and leads on the big arm, and the hydraulic cylinder piston head end links to each other by the bearing pin mode with swing arm.Working method: during clamping, hydraulic cylinder stretches out, and promotes the motion of swing arm and hydraulic cylinder piston head end connecting portion, and by leverage, the other end of swing arm just compresses tubing string, and the frictional force that produces by thrust clamps tubing string.When unclamping, hydraulic cylinder is regained, and drives the end swing arm withdrawal that links to each other, and by leverage, the other end perk of swing arm is opened, and unclamps tubing string.
Present drilling tool clamping device exists following problems: working an end after the time, because the operating pressure deficiency that hydraulic cylinder leakage of oil or other reasons cause, or clamping surface often contacts under the situation that causes wearing and tearing with tubing string in the swing arm, the frictional force that will make clamping device produce is not enough to overcome the gravity of tubing string, the big arm of winner is lifted or when mobile, the phenomenon of sliding takes place in the drilling tool that is held.
The utility model content
The purpose of this utility model has provided a kind of can effectively preventing and has caused the drilling tool that is held that the clamping device that is used for drilling tool that slides takes place in reasons such as hydraulic cylinder works insufficient pressure, clamping surface wearing and tearing.
The technical solution of the utility model is as follows:
A kind of drilling tool clamping device comprises support, cramping body, guide peg, hydraulic cylinder, first force bearing ring and second force bearing ring; Described guide peg passes described support, and the other end connected second force bearing ring when end of described guide peg connected first force bearing ring; The medial surface of described support is connected with at least 2 lining bodies, and the inner surface of described lining body is the inclined-plane, and the inner surface of described lining body has chute; The back side of described cramping body has the inclined-plane that contacts with the inner surface of described lining body, and the back side of described cramping body connects slide rail, and described slide rail is connected with the chute of described lining body; When described cramping body during to lower slider, under the guide effect of the inclined-plane of described lining body simultaneously in draw close; One end of described cramping body connects first journal stirrup, and the soffit of first force bearing ring connects second journal stirrup, and described first journal stirrup and connecting rod one end flexibly connect, and described second journal stirrup and the described connecting rod other end flexibly connect; The other end was connected with described second force bearing ring when one end of described hydraulic cylinder connected the lower surface of described support.
Adopt said structure, when reasons such as hydraulic cylinder works insufficient pressure, clamping surface wearing and tearing cause the drilling tool that is held that the situation of slip takes place, under the inclined-plane guide effect, inside motion when moving downward, cramping body also takes place, utilizing the gravity conversion of drilling tool self that drilling tool is further applied chucking power promptly adopts the wedging principle to clamp drilling tool, make it have certain auto-lock function, the wedging drilling tool prevents the further slip of drilling tool to a certain extent
The inner surface of described cramping body connects the tooth body.
Described support, described first force bearing ring and described second force bearing ring are arc.
Described support, described first force bearing ring and described second force bearing ring are semicircular ring.
Described support is connected with 4 described guide pegs.
The outer seat middle part of described semi-round ring shape is furnished with 2 guide pegs, and 1 guide peg is all arranged at two ends.
Described support has groove, on the sidewall of described groove locating hole is arranged.
Beneficial effect: the utility model is simple in structure, be skillfully constructed, and can effectively prevent former thereby cause the drilling tool that is held to slide in hydraulic cylinder works insufficient pressure, clamping surface wearing and tearing etc.
Description of drawings
The utility model will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 leads the lateral view behind the big arm for the utility model is installed in;
Fig. 3 is the partial enlarged drawing of cramping body and inner lining body annexation in the utility model;
Fig. 4 is installed in the rear elevation of leading on the big arm for the utility model.
The specific embodiment
Embodiment: shown in Fig. 1,2,3,4, a kind of drilling tool clamping device comprises support 1, cramping body 3, guide peg 4, hydraulic cylinder 12, first force bearing ring 5 and second force bearing ring 6; Described guide peg 4 passes described support 1, and the other end connected second force bearing ring 6 when an end of described guide peg 4 connected first force bearing ring 5; The medial surface of described support 1 is connected with at least 2 lining bodies 2, and the inner surface of described lining body 2 is the inclined-plane, and the inner surface of described lining body 2 has chute 7; The back side of described cramping body 3 has the inclined-plane that contacts with the inner surface of described lining body 2, and the back side of described cramping body 3 connects slide rail 8, and described slide rail 8 is connected with the chute 7 of described lining body 2; When described cramping body 3 during to lower slider, under the guide effect of the inclined-plane of described lining body 2 simultaneously in draw close; The soffit that one end of described cramping body 3 connects first journal stirrup, 9, the first force bearing rings 5 connects second journal stirrup 10, and described first journal stirrup 9 flexibly connects with connecting rod 11 1 ends, and described second journal stirrup 10 flexibly connects with described connecting rod 11 other ends; The other end was connected with described second force bearing ring 6 when one end of described hydraulic cylinder 12 connected the lower surface of described support 1.The inner surface of described cramping body 3 connects tooth body 13.Described support 1, described first force bearing ring 5 and described second force bearing ring 6 are arc.Described support 1, described first force bearing ring 5 and described second force bearing ring 6 are semicircular ring.Described support 1 is connected with 4 described guide pegs 4.Outer seat 1 middle part of described semi-round ring shape is furnished with 2 guide pegs 4, and 1 guide peg 4 is all arranged at two ends.Described support 1 has groove 14, and locating hole 15 is arranged on the sidewall of described groove 14.
Claims (7)
1. drilling tool clamping device, it is characterized in that: this device comprises support (1), cramping body (3), guide peg (4), hydraulic cylinder (12), first force bearing ring (5) and second force bearing ring (6); Described guide peg (4) passes described support (1), and the other end connected second force bearing ring (6) when an end of described guide peg (4) connected first force bearing ring (5); The medial surface of described support (1) is connected with at least 2 lining bodies (2), and the inner surface of described lining body (2) is the inclined-plane, and the inner surface of described lining body (2) has chute (7); The back side of described cramping body (3) has the inclined-plane that contacts with the inner surface of described lining body (2), and the back side of described cramping body (3) connects slide rail (8), and described slide rail (8) is connected with the chute (7) of described lining body (2); When described cramping body (3) during to lower slider, under the inclined-plane guide effect of described lining body (2) simultaneously in draw close; One end of described cramping body (3) connects first journal stirrup (9), the soffit of first force bearing ring (5) connects second journal stirrup (10), described first journal stirrup (9) flexibly connects with connecting rod (11) one ends, and described second journal stirrup (10) flexibly connects with described connecting rod (11) other end; The other end was connected with described second force bearing ring (6) when one end of described hydraulic cylinder (12) connected the lower surface of described support (1).
2. a kind of drilling tool clamping device according to claim 1 is characterized in that: the inner surface of described cramping body (3) connects tooth body (13).
3. a kind of drilling tool clamping device according to claim 1 is characterized in that: described support (1), described first force bearing ring (5) and described second force bearing ring (6) are arc.
4. a kind of drilling tool clamping device according to claim 1 is characterized in that: described support (1), described first force bearing ring (5) and described second force bearing ring (6) are semicircular ring.
5. according to claim 3 or 4 described a kind of clamping devices that are used for drilling tool, it is characterized in that: described support (1) is connected with 4 described guide pegs (4).
6. a kind of clamping device that is used for drilling tool according to claim 5 is characterized in that: the outer seat of described semi-round ring shape (1) middle part is furnished with 2 guide pegs (4), and 1 guide peg (4) is all arranged at two ends.
7. according to claim 1 or 3 described a kind of clamping devices that are used for drilling tool, it is characterized in that: described support (1) has groove (14), and locating hole (15) is arranged on the sidewall of described groove (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203031237U CN201474629U (en) | 2009-05-13 | 2009-05-13 | Drilling tool clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203031237U CN201474629U (en) | 2009-05-13 | 2009-05-13 | Drilling tool clamping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201474629U true CN201474629U (en) | 2010-05-19 |
Family
ID=42410877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203031237U Expired - Fee Related CN201474629U (en) | 2009-05-13 | 2009-05-13 | Drilling tool clamping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201474629U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863783A (en) * | 2019-11-30 | 2020-03-06 | 孙庆云 | Sucker rod centralizer convenient to installation |
-
2009
- 2009-05-13 CN CN2009203031237U patent/CN201474629U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863783A (en) * | 2019-11-30 | 2020-03-06 | 孙庆云 | Sucker rod centralizer convenient to installation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20160513 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |