CN201915868U - Slip recess with guide chutes - Google Patents
Slip recess with guide chutes Download PDFInfo
- Publication number
- CN201915868U CN201915868U CN2010206681507U CN201020668150U CN201915868U CN 201915868 U CN201915868 U CN 201915868U CN 2010206681507 U CN2010206681507 U CN 2010206681507U CN 201020668150 U CN201020668150 U CN 201020668150U CN 201915868 U CN201915868 U CN 201915868U
- Authority
- CN
- China
- Prior art keywords
- slip
- skewed slot
- slip recess
- leading
- pipe column
- 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 slip recess with guide chutes. The body of the slip recess is a cylinder with a hollow cylindrical cavity; a plurality of guide chutes which are axially and symmetrically distributed are arranged on an inner cylindrical surface of the hollow cylindrical cavity; two lateral surfaces of each guide chute are mutually parallel and are parallel to a center line of the hollow cylindrical cavity; a bottom surface of each guide chute is an inclined surface; larger openings of the two symmetrical inclined planes are arranged at the lower end of the body; and small openings are formed at the upper end of the body. By changing a slip recess structural form of a slip, the slip can be effectively used for clamping a pipe column, the function of the slip for clamping the pipe column can be enhanced and the reliability of the slip for clamping the pipe column can be improved; toothed plate supports are embedded into the guide chutes of the slip recess so as to enhance the motion restriction of the toothed plate supports in the circumferential direction; the inclined planes of the toothed plate supports are completely contacted with the inclined planes in the guide chutes of the slip recess; and the slip recess has functions of self-locking and transmitting the torsion to the pipe column, so that the effective clamping can be achieved. In addition, the slip recess has thefunction of transmitting the torsion to the pipe column through the toothed plate supports.
Description
Technical field
The utility model is that the slip spider that especially provides a kind of band to lead skewed slot relates to drilling well, well workover tubing string clamping device, belongs to the petroleum machinery technical field to the improvement of existing slip spider structure.
Background technology
In the petroleum machinery technical field.Current conventional slips in usefulness, its slip spider structure is the cylinder with hollow cone chamber.The major diameter in hollow cone chamber is in the slip spider lower end, and minor diameter is in the slip spider upper end.The dental lamina holder that studs with dental lamina is placed in the hollow cone chamber.The lateral surface of dental lamina holder is an outer conical surface, and the coning angle of its outer conical surface equates with the coning angle of slip spider hollow cone chamber internal conical surface.The dental lamina holder moves both vertically from bottom to top along the center line in hollow cone chamber under the effect of hydraulic cylinder.The outer conical surface of dental lamina holder is slided from the slip spider lower end to the slip spider upper end along the internal conical surface of slip spider, makes the external surface of the dental lamina intrados tooth of dental lamina holder near tubing string, realizes undergauge and clamps oil pipe.But the dental lamina holder outer conical surface of this slips and slip spider internal conical surface be not constraint in a circumferential direction.In addition, the axial displacement of dental lamina holder makes its outer conical surface can not contact fully with the slip spider internal conical surface.Cause the dental lamina holder on internal conical surface, to move along the internal conical surface circumference, make slips clamping tubing string unreliable around the slip spider center line.
Summary of the invention
The slip spider that the utility model provides a kind of band to lead skewed slot can make the effective clamping tubing string of slips, for overcoming the mutual constraint between the dental lamina holder in use of conventional slips and the slip spider and contacting the problem that exists.
Technical solution adopted in the utility model is as follows: the body of slip spider is the cylinder with hollow cylinder chamber, offering some skewed slots of axially leading on the inner cylinder face in hollow cylinder chamber is symmetrically distributed, each two sides of leading skewed slot is parallel to each other and is parallel with hollow cylinder chamber center line, the bottom surface of leading skewed slot is the inclined-plane, and the angle of slope of inclined-plane and hollow cylinder chamber center line is a=5 ~ 15 degree; The big opening on two symmetrical inclined-planes is in the lower end of body, and little opening is in the upper end of body.
The described skewed slot of leading is 4 symmetrical cross distribution.
Described bottom surface of leading skewed slot is plane or geometries such as arc surface or prismatic surface.
The utility model is common to traveling slip or stationary slip as slip spider.
The utility model is when practical application, and the dental lamina holder that studs with dental lamina is placed on of the present utility model leading in the skewed slot, and the two sides of dental lamina holder are parallel with the two sides of leading skewed slot, and both are slidingly matched; The lateral surface of dental lamina holder is the inclined-plane, and equates with the angle of slope, inclined-plane of leading skewed slot.The inclined-plane of dental lamina holder contacts entirely with the inclined-plane of leading skewed slot; On the opposite on dental lamina holder inclined-plane, inlaying dental lamina, the uniform intrados tooth of the inner cylinder face of dental lamina; Dental lamina holder under the effect of hydraulic cylinder leading in the skewed slot along the hollow cylinder chamber centerline direction move both vertically from bottom to top.Under the outer ramp effect of leading inclined-plane and dental lamina holder in the skewed slot of slip spider, make the external surface of the dental lamina intrados tooth of dental lamina holder, realize that undergauge also clamps oil pipe, and brought into play inclined-plane reinforcement and locking effect near tubing string.
Good effect of the present utility model is: the method with the slip spider form of structure that changes slips realizes the effective clamping tubing string of slips, can strengthen the function of the clamping tubing string of slips, improves the reliability of slips clamping tubing string; The dental lamina holder is embedded in leading of slip spider has increased the dental lamina holder at the circumferencial direction kinematic constraint in the skewed slot; The inclined-plane of dental lamina holder contacts fully with the interior inclined-plane of skewed slot of leading of slip spider; Possessed self-locking and, make clamping more effective, and possessed by the function of dental lamina holder to the tubing string transfer torque to the function of tubing string transfer torque.
Description of drawings:
Fig. 1 is the utility model structure principle chart; Fig. 2 is the sectional view of Fig. 1.
Wherein, 1 body; 2, hollow cylinder chamber; 3, lead skewed slot; 4, inclined-plane.
The specific embodiment:
According to shown in Figure 1, body 1 of the present utility model is for having the cylinder in hollow cylinder chamber 2, what offer 4 axial symmetrical cross distribution on the inner cylinder face in hollow cylinder chamber 2 leads skewed slot 3, each two sides of leading skewed slot 3 is parallel to each other and is parallel with hollow cylinder chamber 2 center lines, the bottom surface of leading skewed slot 3 is inclined-plane 4, and inclined-plane 4 is a=10 degree with the angle of slope of hollow cylinder chamber 2 center lines; The big opening on two symmetrical inclined-planes 4 is in the lower end of body 1, and little opening is in the upper end of body 1.Described inclined-plane 4 of leading skewed slot 3 also can be geometries such as arc surface or prismatic surface for the plane.
Claims (3)
1. a band is led the slip spider of skewed slot, it is characterized in that: the body of slip spider is the cylinder with hollow cylinder chamber, on the inner cylinder face in hollow cylinder chamber, offer the skewed slot of leading of some axial symmetrical distributions, each two sides of leading skewed slot is parallel to each other and is parallel with hollow cylinder chamber center line, the bottom surface of leading skewed slot is the inclined-plane, and the angle of slope of inclined-plane and hollow cylinder chamber center line is a=5 ~ 15 degree; The big opening on two symmetrical inclined-planes is in the lower end of body, and little opening is in the upper end of body.
2. band according to claim 1 is led the slip spider of skewed slot, it is characterized in that: leading skewed slot is 4 symmetrical cross distribution.
3. band according to claim 1 is led the slip spider of skewed slot, it is characterized in that: described bottom surface of leading skewed slot is plane or arc surface or prismatic surface geometry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206681507U CN201915868U (en) | 2010-12-20 | 2010-12-20 | Slip recess with guide chutes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206681507U CN201915868U (en) | 2010-12-20 | 2010-12-20 | Slip recess with guide chutes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201915868U true CN201915868U (en) | 2011-08-03 |
Family
ID=44415670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206681507U Expired - Fee Related CN201915868U (en) | 2010-12-20 | 2010-12-20 | Slip recess with guide chutes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201915868U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899260A (en) * | 2014-04-17 | 2014-07-02 | 胡勇 | Clamping body with three slopes distributed in X-shaped mode and two-way self-locking slip |
| CN104005720A (en) * | 2014-05-20 | 2014-08-27 | 山东三田临朐石油机械有限公司 | Multi-functional slips flashboard |
-
2010
- 2010-12-20 CN CN2010206681507U patent/CN201915868U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899260A (en) * | 2014-04-17 | 2014-07-02 | 胡勇 | Clamping body with three slopes distributed in X-shaped mode and two-way self-locking slip |
| CN104005720A (en) * | 2014-05-20 | 2014-08-27 | 山东三田临朐石油机械有限公司 | Multi-functional slips flashboard |
| CN104005720B (en) * | 2014-05-20 | 2016-06-01 | 山东三田临朐石油机械有限公司 | A kind of multifunction card block brake plate |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110803 Termination date: 20191220 |