CN201753587U - Aperture hydraulic clamper - Google Patents
Aperture hydraulic clamper Download PDFInfo
- Publication number
- CN201753587U CN201753587U CN2010202912038U CN201020291203U CN201753587U CN 201753587 U CN201753587 U CN 201753587U CN 2010202912038 U CN2010202912038 U CN 2010202912038U CN 201020291203 U CN201020291203 U CN 201020291203U CN 201753587 U CN201753587 U CN 201753587U
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- Prior art keywords
- hydraulic
- slips
- drill string
- aperture
- clamping
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Abstract
The utility model discloses an aperture hydraulic clamper comprising at least two clamping mechanisms which are both installed on a clamping body, the bottom plate of the clamping body being provided with a drill string hole through which a drill string passes, wherein the clamping mechanism contains a hydraulic cylinder, inclined bricks and slips, the piston rod of the hydraulic cylinder being capable of driving the inclined bricks to move along the central shaft of the drill string hole, above and below the slips being provided respectively an upper stop block for limiting the upper stop block upward movement and a lower stop block for limiting the upper stop block downward movement, the effect surface of the inclined bricks and the effect surface of the slips being in engagement with each other so that the inclined bricks can push the slips to move along the radial direction of the central shaft of the drill string hole when moving along the central shaft of the drill string hole. The aperture hydraulic clamper of the utility model has the advantages of large clamp force, reliable clamping, bearing capability of large reverse torque, easy change of slips, wide application to drill strings of different specifications and convenient maintenance.
Description
Technical field
The utility model relates to a kind of aperture of using on the geology rock core slewing drilling machine and clamps the drill string device.
Background technology
At present, the aperture hydraulic gripper that uses on the geology rock core slewing drilling machine mainly contains hydraulic connecting rod wooden horse formula clamper and hydraulic pressure deadweight type clamper, wherein, this hydraulic connecting rod wooden horse formula clamper mainly is stretching out or the drive link mechanism drive cam rotation of withdrawing by hydraulic cylinder piston rod, and the rotation of the off-centre by cam clamps or unclamps drill string, and this kind clamper has processed complex, part is many and the big inadequately defective of clamping force; This hydraulic pressure deadweight type clamper has 2 hydraulic jacks, and rely on the flexible drive slips of oil cylinder piston bar to move up and down along the inclined-plane, and then unclamp or clamp drill string, when this kind hydraulic gripper is in meta at the operation valve of hydraulic jack, produce clamping force by drill string weight fully, therefore, it is little clamping force to occur in the hole under the shallow and/or lightweight situation of drill string, the reaction torque that can bear is also little, and insecure problem of working, and the slips of this kind clamper need move up and down with piston rod, and inconvenience is taken out and changed.
The utility model content
The purpose of this utility model is in order to address the above problem, a kind of simple in structure, reliable clamping to be provided, and is easy to change the aperture hydraulic gripper of slips.
The technical solution adopted in the utility model is:
A kind of aperture hydraulic gripper comprises at least two cover clamping mechanisms, and described clamping device is installed on the clamping body, has the drill string hole of passing for drill string on the base plate of described clamping body; Described clamping device comprises hydraulic jack, skewback and slips, and the piston rod of described hydraulic jack can drive skewback and move along the central axis direction in drill string hole; The above and below of described slips is respectively arranged with limits its upper limit spare that moves up and down and lower limit part; The acting surface of described skewback and the acting surface of slips are the inclined-plane that is fitted to each other, and make skewback can promote slips when the central axis direction along the drill string hole moves and move along the radial direction of the central axis in drill string hole.
Preferably, this aperture hydraulic gripper comprises two cover clamping mechanisms, respectively as left clamping device and right clamping device, and the cambered surface that be no more than 1/2 circumference of the clamping face that is used for the clamping drill string of described slips for surrounding drill string.
Preferably, this aperture hydraulic gripper also comprises hydraulic lock, drilling rig hydraulic system is squeezed into high-pressure and hydraulic oil through the hydraulic lock and first hydraulic line big chamber of each hydraulic jack, or high-pressure and hydraulic oil is squeezed into the loculus of each hydraulic jack through hydraulic lock and second hydraulic line, wherein, high-pressure and hydraulic oil enters big chamber or loculus and can promote piston rod respectively and move in the central axis direction upper edge in drill string hole opposite directions.
Preferably, described skewback is provided with pilot hole, described pilot hole and the feather key sliding connection that is connected on the clamping body, and described skewback and piston rod are fixed together with bolt by junction plate.
Preferably, the sidewall of described clamping body is provided with along the guide rail on the central axis direction in drill string hole, and described skewback is provided with the chute that is slidingly installed with guide rail.
Preferably, described upper limit spare is an end band convex shoulder, the gear shaft of other end band locating hole, and described gear shaft penetrates the clamping body, and described gear shaft is removably mounted on the clamping body by insert stop pin in its locating hole.
Preferably, described slips is provided with the handle that is used for taking out from the clamping body slips.
Preferably, the clamping face of described slips is provided with the hard alloy blocks that is used to strengthen chucking power.
Preferably, described aperture hydraulic gripper also comprises the aperture seat on the orifice plates that is used to be packed in rig or board, and described clamping body freely is placed in the seat of aperture.
The beneficial effects of the utility model are: it is big that aperture of the present utility model hydraulic gripper has clamping force, and reliable clamping can be born the advantage of big reaction torque; In addition, also have slips and be easy to change, can adapt to the drill string that clamps different size, and advantage easy to maintenance.
Description of drawings
Fig. 1 looks schematic diagram for the master of aperture described in the utility model hydraulic gripper, and Fig. 1 has carried out partial cutaway;
Fig. 2 is the schematic top plan view of aperture described in the utility model hydraulic gripper, and Fig. 2 has carried out partial cutaway;
Fig. 3 is the front view of slips among Fig. 1 and 2;
Fig. 4 is the vertical view of Fig. 3;
Fig. 5 is the right view of Fig. 3.
The specific embodiment
As illustrated in fig. 1 and 2, aperture of the present utility model hydraulic gripper comprises at least two cover clamping mechanisms, all clamping devices are installed on the clamping body 7, has the drill string hole of passing for drill string on the base plate of this clamping body 7, in the present embodiment, the central axis direction with the drill string hole is set at vertical direction.This clamping device comprises hydraulic jack 2, skewback 3 and slips 6, and wherein, this hydraulic jack 2 is packed on the clamping body 7, and the piston rod of hydraulic jack 2 can drive skewback 3 in the vertical directions and move up and down; The top of slips is provided with limits its upper limit spare that moves upward 5, and the below of slips is provided with limits the lower limit part 12 that it moves downward; The acting surface 31 of this skewback 3 and the inclined-plane of the acting surface of slips 6 65 for being fitted to each other, make skewback 3 when moving up and down, promote the in the radial direction motion of slips 6 at drill string, and then when radially inwardly moving, slips 6 clamps drill string by its clamping face, and when radially outwards moving, unclamp drill string, wherein, shown in Fig. 2 to 5, the acting surface 31 of this skewback 3 and the acting surface 65 of slips 6 all can be the plane, can certainly be the cambered surface that is fitted to each other.
In the present embodiment, as illustrated in fig. 1 and 2, this aperture hydraulic gripper comprises two cover clamping mechanisms, respectively as left clamping device 1a and right clamping device 1b, as shown in Figure 4, the cambered surface that be no more than 1/2 circumference of clamping face 65 for surrounding drill string of slips 6.
In order to realize reliable grip, can be described hydraulic jack 2 configuration hydraulic lock 9, promptly the high-pressure and hydraulic oil of drilling rig hydraulic system enters the big chamber of all hydraulic oil cylinder 2 through hydraulic lock 9 by first hydraulic line 10; Or, enter the loculus of all hydraulic oil cylinder 2 by second hydraulic line 8 through hydraulic lock 9, wherein, high-pressure and hydraulic oil enters big chamber and can promote piston rod and move straight up, can promote piston rod and moves straight down and enter loculus.By these hydraulic lock 9 lockable piston rods, forbid that piston rod withdraws automatically, like this, and no matter hole dark or money, drill string weight is big or little, and slips 6 can both clamp drill string reliably.
In addition, the self-locking of piston rod is realized at the inclination angle of acting surface 65 that can also be by design slips 6, even the inclination angle of slips is less than or equal to the angle of friction of 3 of slips 6 and skewbacks.
For skewback 3 is moved on the direction of regulation, this skewback is provided with pilot hole, this pilot hole is slidingly matched with the feather key 4 that is connected on the clamping body 7, this feather key 4 bears the radial reaction force when slips 6 clamps drill string, and this skewback 3 links together with bolt by junction plate with piston rod.In addition, the guide rail 11 of vertical direction can also be set on the sidewall of described clamping body 7, and skewback is provided with the chute that is slidingly installed with guide rail 11, further to guarantee the directionality of skewback, in addition, can also avoid it to twist.
Described upper limit spare 5 can be installed on the sidewall of clamping body 7, and can take off from clamping body 7 easily, as illustrated in fig. 1 and 2, this upper limit spare can an end band convex shoulder, the gear shaft of one end band locating hole, gear shaft is penetrated clamping body 7 back realize the location, and can from clamping body 7, take off gear shaft after stop pin 51 extracted by in locating hole, inserting stop pin 51.After taking off gear shaft, just desirablely go out slips 6 and change, therefore, aperture described in the utility model hydraulic gripper can adapt to the drill string that clamps different size.
Shown in Fig. 3 to 5, for the ease of taking out slips 6, this slips 6 can be provided with handle 61, in addition, in order to increase chucking power, a plurality of hard alloy blocks 62 can be set on the clamping face of this slips.
Using aperture of the present utility model hydraulic gripper, this clamping body 7 freely is placed in the aperture seat 1, and aperture seat 1 is fixed on by securing member on the orifice plates of rig or board, and this aperture seat 1 is used to bear turns round the reaction torque that produces when unloading drill string.
For the aperture hydraulic gripper shown in Fig. 1 to 5, when needs clamp drill string, the piston rod of two hydraulic jacks 2 stretches out, and drives two skewbacks 3 and moves straight up along feather key 4, and the acting surface of two skewbacks 3 is when moving upward, contact respectively with the acting surface of corresponding slips 6 separately, order about two slips 6 upwards and radially inwardly motion, owing to have gear shaft 5 to be positioned at the top of slips 6, therefore, slips 6 can only radially inwardly move, thereby can clamp drill string.When unclamping, piston rod withdrawal, skewback 3 moves straight down along feather key 4, the acting surface of skewback 3 and and the acting surface of corresponding separately slips 6 between produce the gap, slips 6 will radially outwards move back, and promptly unclamps drill string.
After long-term the use, more serious wearing and tearing may appear in the acting surface of slips 6, at this moment, only need can normally use by welding steel on the acting surface of slips, keep in repair very convenient.
Being the utility model preferred embodiment only in sum, is not to be used for limiting practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modification, all should belong to technology category of the present utility model.
Claims (9)
1. an aperture hydraulic gripper comprises at least two cover clamping mechanisms, and described clamping device is installed on the clamping body, has the drill string hole of passing for drill string on the base plate of described clamping body; It is characterized in that: described clamping device comprises hydraulic jack, skewback and slips, and the piston rod of described hydraulic jack can drive skewback and move along the central axis direction in drill string hole; The above and below of described slips is respectively arranged with limits its upper limit spare that moves up and down and lower limit part; The acting surface of described skewback and the acting surface of slips are the inclined-plane that is fitted to each other, and make skewback can promote slips when the central axis direction along the drill string hole moves and move along the radial direction of the central axis in drill string hole.
2. aperture according to claim 1 hydraulic gripper, it is characterized in that: comprise two cover clamping mechanisms, as left clamping device and right clamping device, the clamping face that is used for the clamping drill string of described slips is the cambered surface that is no more than 1/2 circumference that can surround drill string respectively.
3. aperture according to claim 1 hydraulic gripper, it is characterized in that: also comprise hydraulic lock, drilling rig hydraulic system is squeezed into high-pressure and hydraulic oil through the hydraulic lock and first hydraulic line big chamber of each hydraulic jack, or high-pressure and hydraulic oil is squeezed into the loculus of each hydraulic jack through hydraulic lock and second hydraulic line, wherein, high-pressure and hydraulic oil enters big chamber or loculus and can promote piston rod respectively and move in the central axis direction upper edge in drill string hole opposite directions.
4. according to claim 1,2 or 3 described aperture hydraulic grippers, it is characterized in that: described skewback is provided with pilot hole, described pilot hole and the feather key sliding connection that is connected on the clamping body, described skewback and piston rod are fixed together with bolt by junction plate.
5. aperture according to claim 4 hydraulic gripper is characterized in that: the sidewall of described clamping body is provided with along the guide rail on the central axis direction in drill string hole, and described skewback is provided with the chute that is slidingly installed with guide rail.
6. according to claim 1,2 or 3 described aperture hydraulic grippers, it is characterized in that: described upper limit spare is an end band convex shoulder, the gear shaft of other end band locating hole, described gear shaft penetrates the clamping body, and described gear shaft is removably mounted on the clamping body by insert stop pin in its locating hole.
7. aperture according to claim 6 hydraulic gripper is characterized in that: described slips is provided with the handle that is used for taking out from the clamping body slips.
8. according to claim 1,2 or 3 described aperture hydraulic grippers, it is characterized in that: the clamping face of described slips is provided with the hard alloy blocks that is used to strengthen chucking power.
9. according to claim 1,2 or 3 described aperture hydraulic grippers, it is characterized in that also comprise the aperture seat on the orifice plates that is used to be packed in rig or board, described clamping body freely is placed in the seat of aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202912038U CN201753587U (en) | 2010-08-13 | 2010-08-13 | Aperture hydraulic clamper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202912038U CN201753587U (en) | 2010-08-13 | 2010-08-13 | Aperture hydraulic clamper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201753587U true CN201753587U (en) | 2011-03-02 |
Family
ID=43621319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202912038U Expired - Fee Related CN201753587U (en) | 2010-08-13 | 2010-08-13 | Aperture hydraulic clamper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201753587U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110646285A (en) * | 2019-10-09 | 2020-01-03 | 河南理工大学 | Tensile compression testing device for strain in material |
-
2010
- 2010-08-13 CN CN2010202912038U patent/CN201753587U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110646285A (en) * | 2019-10-09 | 2020-01-03 | 河南理工大学 | Tensile compression testing device for strain in material |
| CN110646285B (en) * | 2019-10-09 | 2022-02-08 | 河南理工大学 | Tensile compression testing device for strain in material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: CHINESE GEOLOGICAL SCIENCE SURVEY TECHNOLOGY INST Effective date: 20120313 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120313 Address after: 065000 Langfang golden city of Hebei province Guangyang District Road No. 77 Patentee after: Geological Minerals Langfang Juli Geotechnical Engineering Technology Development Co., Ltd. Address before: 065000 Langfang golden city of Hebei province Guangyang District Road No. 77 Co-patentee before: Chinese Geological Science Survey Technology Inst Patentee before: Geological Minerals Langfang Juli Geotechnical Engineering Technology Development Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110302 Termination date: 20160813 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |