CN203716888U - Clamping power tongs for use in off-angle drilling - Google Patents
Clamping power tongs for use in off-angle drilling Download PDFInfo
- Publication number
- CN203716888U CN203716888U CN201320804938.XU CN201320804938U CN203716888U CN 203716888 U CN203716888 U CN 203716888U CN 201320804938 U CN201320804938 U CN 201320804938U CN 203716888 U CN203716888 U CN 203716888U
- Authority
- CN
- China
- Prior art keywords
- punch
- clamper
- roller
- caliper
- tongs
- 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
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 25
- 210000000080 chela (arthropods) Anatomy 0.000 claims description 15
- 238000004080 punching Methods 0.000 claims description 13
- 230000033001 locomotion Effects 0.000 claims description 7
- 239000012530 fluid Substances 0.000 abstract description 9
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 206010043183 Teething Diseases 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 1
Landscapes
- Clamps And Clips (AREA)
Abstract
The utility model discloses a pair of clamping power tongs for use in off-angle drilling. A tongs body assembly is constructed by connecting main clamping tongs 1, back clamping tongs 2, clamping oil cylinders 3 and 3', a positioning frame 10, a limiting roller 11, support plates 12 and 12', roller wheels 13 and 13', a righting roller 14 and a floating spring 15; between the axial directions of the main clamping tongs 1 and the back clamping tongs 2, the two pairs of tongs are constrained through the limiting roller 11 and the roller wheels 13 and 13' respectively to be kept in parallel; a sealing cavity A is formed between a tongs body 105 and a cover plate 107 to realize closed type transmission of a gear, so that the gear is prevented from being eroded by drilling fluid; between the radial directions of the main clamping tongs 1 and the back clamping tongs 2, inclined tongs bodies are kept in a centered state and can rotate relatively through the righting roller 14; the tongs body assembly is arranged in a tongs body cage 4, and moves up and down in a movable bracket 5 along with the tongs body cage 4; the movable bracket 5 is fixed in a fixed bracket 6 to enter and exit. Through remote control of hydraulic and pneumatic systems, movable adjustment and clamping of the clamping positions of off-angle drilling pipe columns are realized, and clamping operation is finished.
Description
Technical field
The utility model relates to and unloads the rushing in button Power Tong, particularly off-angle drilling engineering for above unloading a kind of off-angle drilling punching button Power Tong of tubing string screw thread of tubing string screw thread on a kind of, belongs to petroleum equipment design and manufacturing technology field.
Background technology
In existing straight well drilling engineering, Power Tong is suspended on vertical derrick by outstanding rope, between Power Tong and outstanding rope, is connected with oil cylinder, makes Power Tong energy lifting certain altitude implement to unload the operation of tubing string screw thread by hoist cylinder.In the vertical derrick of rig, have open platform, handled easily personnel stand on the other implementation and operation of Power Tong; On raised platform around a well, there is the convenient space that cylinder is installed, by the parallel propelling movement Power Tong of cylinder, tubing string is implemented to punching button or spinner, then return original place and do not hinder shaft mouth operation.In the operation of parallel propelling movement Power Tong, drilling fluid is difficult for entering caliper thereby does not affect Power Tong normal operation.And inclination derrick does not only have the platform of handled easily, and the space of installation Power Tong is also narrower and small, does not possess the service condition of straight well rig Power Tong.Along with the fast development of oblique brill technology, requiring must be with drilling tool tilt operation with the supporting Power Tong of slant rig; In the time that punch main clamper and punch back clamper center of gravity are not on same center of gravity line, can ensure that two pincers are parallel; Drilling fluid very easily fill with in the situation that, can stand drilling fluid invasion and attack and not affect normal use; Lifting is unloaded the operation of tubing string screw thread on implementing within the specific limits; Can after operation is complete, return, not affect normal handling drilling tool.Tilt rig has top driving force, completes tubing string spinner, and on it, the tight and shackle of button punching is unclamped and detained Power Tong by punching and complete.
Summary of the invention
Existing can not be used for slant rig for the Power Tong on straight well rig supporting, the purpose of this utility model be to provide a kind of be applicable to slant rig supporting rush button Power Tong.
To achieve these goals, the technical solution of the utility model is: punching button Power Tong for a kind of off-angle drilling, comprise punch main clamper 1, punch back clamper 2, punch oil cylinder 3 and 3 ', caliper cage 4, support 5 moves about, fixed support 6, hoist cylinder 7, lever 8, push cylinder 9, locating rack 10, spacing roller 11, gripper shoe 12 and 12 ', roller 13 and 13 ', righting roller 14, floating spring 15, wherein punch main clamper 1, punch back clamper 2, punch oil cylinder 3 and 3 ', locating rack 10, spacing roller 11, gripper shoe 12 and 12 ', roller 13 and 13 ', righting roller 14, floating spring 15 links together and forms caliper assembly, punch main clamper 1 and punch oil cylinder 3 and 3 ' piston rod be connected, punch back clamper 2 and punch oil cylinder 3 and 3 ' cylinder body be connected, locating rack 10 is fixed on punch back clamper 2, and locating rack 10 is provided with spacing roller 11, gripper shoe 12 and 12 ' be fixed on punch main clamper 1, and gripper shoe 12 and 12 ' be above respectively equipped with roller 13 and 13 ', between punch main clamper 1 and punch back clamper 2, be provided with righting roller 14 and floating spring 15, floating spring 15 floats on punch back clamper 2 punch main clamper 1, can or screw out with the precession of tubing string screw thread and float, caliper assembly is placed in caliper cage 4, wherein projection 201 is equipped with in punch back clamper 2 both sides, bottom, caliper cage 4 is fixed with spring 402, when work, projection 201 compresses a side spring 402, punch back clamper 2 can rotate on a small quantity with respect to caliper cage 4, works complete, and spring 402 promotes projection 201 resets punch back clamper 2, caliper cage 4 is in and moves about in support 5, hoist cylinder 7 upper end piston rods are connected with caliper cage 4 by lever 8, and the cylinder body lower end of hoist cylinder 7 is hinged on moves about on support 5, caliper cage 4 is provided with roller 401, under hoist cylinder 7 promotes, can move up and down along the rail groove moving about on support 5, the support 5 that moves about is provided with roller 501, pushing under the propelling movement of cylinder 9, can advance or retreat along the rail groove on fixed support 6, fixed support 6 is used for being supported on derrick of slant-hole drilling rig, keeps the rotation centerline of punch main clamper 1 with tiltedly drilling pipe post center line is parallel, between the axial direction of punch main clamper 1 and punch back clamper 2, by arrange spacing roller 11 and roller 13 and 13 ', retrain respectively punch main clamper 1 and punch back clamper 2, realize keeping parallelism still under the operating mode that two pincers tilt at caliper, its radially between, by righting roller 14 is set, realizes two pincers and coaxially can relatively rotate, the binding clip of punch main clamper 1, punch back clamper 2 is planet pawl formula clamping body, planet pawl rotating shaft 101 one end are fixed with planetary gear 102, the other end is fixed with planet pawl 106, and tooth bar plunger A110 promotes duplicate gear 104 and idle wheel 105 drives planet pawl 106 rotating in same directions, punch main clamper 1, the each travelling gear of punch back clamper 2 are in the A of annular seal space separately forming between caliper 105 and cover plate 107 becomes closed-type cylindrical gearing, not only in chamber, keep good lubrication, and outside chamber, drilling fluid can not be invaded, the upper button of punch main clamper 1, punch back clamper 2 or shackle switching are controlled by knob gear axle 109, and knob gear axle 109 is driven and turned to by tooth bar plunger B111, realizes Long-distance Control.
The utility model is placed in caliper assembly in caliper cage 4, and can rotate on a small quantity with respect to caliper cage 4, and can automatically reset, ensure under tubing string and the motionless state of derrick, the reliable clamping tubing string of punch back clamper 2, caliper cage 4 can be on the support 5 that moves about be interior under hoist cylinder 7 effects, lower movement, the support 5 that moves about can advance or retreat with respect to fixed support 6 by pushing cylinder 9 effects, caliper assembly is under inclination operating mode, pass through liquid, baric systerm is to hoist cylinder 7, push the Long-distance Control of cylinder 9, thereby realize, caliper assembly rushes tightly with respect to button on oblique drilling pipe post and shackle is washed open, and clamping position capable of regulating.
The utility model is parallel by spacing roller 11 and roller 13 and 13 ' retrain respectively two pincers between the axial direction of punch main clamper 1 and punch back clamper 2, punch main clamper 1 and punch back clamper 2 radially between, by righting roller 14 is set, make two pincers under the operating mode tilting, still keeping parallelism centering and can relatively rotating, reaches the object that button punching is tight and shackle is washed open.
The utility model, also by the annular seal space A structure forming between caliper 105 and cover plate 107, makes travelling gear form closed-type cylindrical gearing, thereby has solved caliper under inclination operating mode, the easy etch travelling gear of drilling fluid problem.
Brief description of the drawings
Fig. 1 is main TV structure schematic diagram of the present utility model;
Fig. 2 is plan structure schematic diagram of the present utility model;
Fig. 3 is A-A sectional structure schematic diagram in Fig. 1, and punch back clamper 2 is with respect to a small amount of schematic diagram rotating of caliper cage 4;
Fig. 4 is the main TV structure schematic diagram of caliper assembly of the present utility model;
Fig. 5 is caliper assembly plan structure schematic diagram of the present utility model;
Fig. 6 is the gear transmission structure schematic diagram of the utility model punch main clamper 1, punch back clamper 2;
Fig. 7 is the utility model punch main clamper 1, punch back clamper 2 binding clip planet pawl formula clamping structure schematic diagrames;
Fig. 8 is B-B cross section sectional structure schematic diagram in Fig. 4;
Fig. 9 is C-C spin crossover sectional structure schematic diagram in Fig. 5;
Figure 10 is D-D cross section sectional structure schematic diagram in Fig. 5;
Figure 11 is the hydraulic control process principle figure of the utility model hydraulic control system;
Figure 12 is the gas control process principle figure of the utility model pneumatic control system.
At Fig. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, in 12: 1 punch main clamper, 101 planet pawl rotating shafts, 102 planetary gears, 103 idle wheels, 104 duplicate gears, 105 calipers, 106 planet pawls, 107 cover plates, 108 control backing pin, 109 knob gear axles, 110 tooth bar plunger A, 111 tooth bar plunger B, 2 punch back clampers, 201 projections, 3 and 3 ' punch oil cylinder, 4 caliper cages, 401 rollers, 402 springs, 5 supports that move about, 501 rollers, 6 fixed supports, 7 hoist cylinders, 8 levers, 9 push cylinder, 10 locating racks, 11 spacing rollers, 12 and 12 ' gripper shoe, 13 and 13 ' roller, 14 righting rollers, 15 floating springs, a mudhole, A annular seal space, F1 is upper button or shackle switching control valve, F2 is caliper assembly lift valve, F3 is main back-up tong clamping and release control valve, F4 is punch oil cylinder control valve, YB is hydraulic gage, NB is torque meter, ZKG is shackle conversion and control oil cylinder on main pincers, BKG is shackle conversion and control oil cylinder on back-up tong, ZG is that main pincers planet pawl drives oil cylinder, BG is that back-up tong planet pawl drives oil cylinder, Y is overflow valve, QB is atmospheric pressure table, F5 is for pushing cylinder control valve.
Detailed description of the invention
As shown in Fig. 1,2,4,5,10, punch main clamper 1, punch back clamper 2, punch oil cylinder 3 and 3 ', locating rack 10, spacing roller 11, gripper shoe 12 and 12 ', roller 13 and 13 ', righting roller 14, floating spring 15 link together and form caliper assembly; Punch oil cylinder 3 and 3 ' piston rod be connected with punch main clamper 1, its cylinder body is hinged on punch back clamper 2, two punch oil cylinders 3 and 3 ' push away one and draw, and punch main clamper 1 and punch back clamper 2 are produced relative rotation, and implement tubing string punching button; Caliper assembly is placed in caliper cage 4, and caliper cage 4 is provided with roller 401 and can moves up and down along the track of the support 5 that moves about; The support 5 that moves about is connected with the piston rod that pushes cylinder 9, pushes cylinder 9 cylinder bodies and is supported in fixed support 6 rear portions, and roller 501 is housed on the support 5 that moves about can advance or retreat movement along the track of fixed support 6; Hoist cylinder 7 bases are hinged on and move about on support 5, and its piston rod is connected with lever 8, and lever 8 one end are connected with caliper cage 4 upper ends, and hoist cylinder 7 is flexible, and band moving caliper cage 4 moves up and down in support 5 moving about; Fixed support 6 is arranged on derrick of slant-hole drilling rig, keeps binding clip rotation centerline parallel with tubing string axis.
As shown in Figure 3, projection 201 is contained in respectively punch back clamper 2 both sides, bottom, projection 201 both sides are connected with the spring 402 being contained on caliper cage 4, and spring 402 precommpression make punch back clamper 2 rotate on a small quantity and can automatically reset under spring 402 effects relative to caliper cage 4.
As shown in Fig. 4,5,6,7,10, the binding clip of punch main clamper 1, punch back clamper 2 is planet pawl formula clamping structure, therefore only describe in detail as an example of punch main clamper 1 example: planet pawl rotating shaft 101 one end are fixed with planetary gear 102, the other end is fixed with planet pawl 106, tooth bar plunger A110 promotes duplicate gear 104 and idle wheel 105 drives planet pawl 106 rotating in same directions, planet pawl 106 is clamped or unclamp tubing string; On duplicate gear 104, be provided with and control backing pin 108, knob gear axle 109 end breach directions determine to control the rotation direction of backing pins 108, also just control punch main clamper 1, punch back clamper 2 is that upper clip is tight or shackle clamps; Tooth bar plunger B111 drive knob gear shaft 109 commutates, and the upper button or the shackle that realize punch main clamper 1, punch back clamper 2 are switched; The rotation space rear portion of planet pawl 106 is provided with mudhole a, makes to enter the discharge of taking advantage of a situation of fluid foreign material in caliper 105; The annular seal space A forming between caliper 105 and cover plate 107, ensures each travelling gear closed-type cylindrical gearing, and good lubrication, is not affected by drilling fluid.
As shown in Fig. 4,5,8,9, between the axial direction of punch main clamper 1 and punch back clamper 2, by being fixed on locating rack 10 on punch back clamper 2 and the spacing roller 11 of locating rack 10 upper ends, and be fixed on the roller 13,13 of gripper shoe 12 on punch main clamper 1,12 ' bottom ', retrain respectively punch main clamper 1 and punch back clamper 2 and realize under the operating mode that two pincers tilt at caliper still keeping parallelism; Radially, by righting roller 14 is set, realizes two pincers and coaxially can relatively rotate.
As shown in figure 11, constituted the hydraulic control flow process of Long-distance Control by Hydraulic Elements.
As shown in figure 12, constituted the gas control flow process of Long-distance Control by pneumatic element.
Concrete operations are as follows: in the time of button on caliper assembly or shackle, first handle the upper button shown in Figure 11 or shackle switching control valve F1, start on main pincers shackle conversion and control oil cylinder BKG on shackle conversion and control oil cylinder ZKG and back-up tong, drive knob gear axle 109 to rotate, make punch main clamper 1, punch back clamper 2 in upper button or shackle work condition state; Handle the cylinder control valve F5 shown in Figure 12 and push caliper assembly to tubing string, atmospheric pressure table QB shows that it pushes pressure size; Handle caliper assembly lift valve F2, make punch main clamper planet pawl aim at fillet of tool joint pins; Handle main back-up tong clamping and release control valve F3, make the planet pawl 106 teething contact tubing strings in punch main clamper 1, punch back clamper 2; Manipulate again punch oil cylinder control valve F4, button or shackle punching button in enforcement, hydraulic gage YB shows its actual pressure size, torque meter NB shows its punching button torque value, when upper, shackle, according to upper, shackle torque demand regulation relief valve Y pressure size, link closely or wash open after screw thread, handle main back-up tong clamping and release control valve F3 and make the planet pawl 106 in punch main clamper 1, punch back clamper 2 withdraw tubing string; Manipulate again punch oil cylinder control valve F4, make punch main clamper 1 be returned to initial position, handle caliper assembly lift valve F2, make caliper assembly drop to extreme lower position; Finally handle propelling movement cylinder control valve F5 and make caliper assembly return original position, change by slant rig top and drive spinner, complete once upper button or shackle operation, it rushes button process is Long-distance Control.
Caliper assembly lift valve F2 has lifting speed-regulating function; Main back-up tong clamping and release control valve F3 has pressure regulation and string compression functions, its string compression functions can make punch oil cylinder 3 and 3 ' drive oil cylinder ZG, back-up tong planet pawl driving oil cylinder BG simultaneously to boost or step-down with driving the main pincers planet pawl that planet pawl 106 clamps, pressure is consistent, and strengthens planet pawl 106 and clamps reliability; The commutation of upper button or shackle switching control valve F1 does not change oil pressure sprue direction.
The utility model is the rolling structure in the rail groove of support 5 that moves about by the roller 401 on caliper cage 4, and realization moves up and down; The rolling structure of the roller 501 moving about on support 5 in the rail groove of fixed support 6, realizes and advances or retreat, thereby met, caliper assembly is transferred under inclination operating mode and the needs of lifting.
The utility model is between punch main clamper 1 and the axial direction of punch back clamper 2, by being fixedly connected on the spacing roller 11 of locating rack 10 upper ends on punch back clamper 2 and being fixed on gripper shoe 12 on punch main clamper 1 and the roller 13 and 13 of 12 ' bottom ', retrain respectively punch main clamper 1 and punch back clamper 2, realize two pincers keeping parallelism and alleviate punch oil cylinder piston rod additional force still in the situation that caliper tilts; Radially, by being arranged on the righting roller 14 between punch main clamper 1 and punch back clamper 2, realizing two pincers coaxially and can relatively rotate.
The utility model, also by the annular seal space A structure forming between caliper 105 and cover plate 107, makes travelling gear form closed-type cylindrical gearing, thereby has solved caliper under inclination operating mode, the easy etch travelling gear of drilling fluid problem.
Claims (3)
1. a punching button Power Tong for off-angle drilling, comprise punch main clamper (1), punch back clamper (2), punch oil cylinder (3) and (3 '), caliper cage (4), support (5) moves about, fixed support (6), hoist cylinder (7), lever (8), push cylinder (9), locating rack (10), spacing roller (11), gripper shoe (12) and (12 '), roller (13) and (13 '), righting roller (14), floating spring (15), wherein punch main clamper (1), punch back clamper (2), punch oil cylinder (3) and (3 '), locating rack (10), spacing roller (11), gripper shoe (12) and (12 '), roller (13) and (13 '), righting roller (14), floating spring (15) links together and forms caliper assembly, punch main clamper (1) is connected with the piston rod of (3 ') with punch oil cylinder (3), and punch back clamper (2) is connected with the cylinder body of (3 ') with punch oil cylinder (3), locating rack (10) is fixed on punch back clamper (2), locating rack (10) is provided with spacing roller (11), it is upper that gripper shoe (12) and (12 ') are fixed on punch main clamper (1), is respectively equipped with roller (13) and (13 ') on gripper shoe (12) and (12 '), between punch main clamper (1) and punch back clamper (2), be provided with righting roller (14) and floating spring (15), floating spring (15) floats on punch back clamper (2) punch main clamper (1), can or screw out with the precession of tubing string screw thread and float, it is characterized in that:
Described caliper assembly is placed in caliper cage (4), caliper cage (4) is in the support that moves about (5), hoist cylinder (7) upper end piston rod is connected with caliper cage (4) by lever (8), and the cylinder body lower end of hoist cylinder (7) is hinged on the support that moves about (5); Caliper cage (4) is provided with roller (401), under hoist cylinder (7) promotes, can move up and down along the rail groove on the support that moves about (5); The support (5) that moves about is provided with roller (501), pushing under the propelling movement of cylinder (9), can advance or retreat along the rail groove on fixed support (6);
Between the axial direction of described punch main clamper (1) and punch back clamper (2), by spacing roller (11) and roller (13) and (13 ') are set, retrain respectively punch main clamper (1) and punch back clamper (2), realize keeping parallelism still under the operating mode that two pincers tilt at caliper; Radially, by righting roller (14) is set, realizes two pincers and coaxially can relatively rotate;
The binding clip of described punch main clamper (1), punch back clamper (2) is planet pawl formula clamping structure, planet pawl rotating shaft (101) one end is fixed with planetary gear (102), the other end is fixed with planet pawl (106), and it is respectively by tooth bar plunger A(110) promotion duplicate gear (104) and idle wheel (105) drive planet pawl (106) rotating in same direction;
Described punch main clamper (1), the each travelling gear of punch back clamper (2) are in the annular seal space separately (A) forming between caliper (105) and cover plate (107) becomes closed-type cylindrical gearing.
2. punching button Power Tong for a kind of off-angle drilling as claimed in claim 1, it is characterized in that: the upper button of described punch main clamper (1), punch back clamper (2), shackle are switched by knob gear axle (109) and controlled, and knob gear axle (109) is by tooth bar plunger B(111) drive and turn to.
3. punching button Power Tong for a kind of off-angle drilling as claimed in claim 1, it is characterized in that: between described punch back clamper (2) and caliper cage (4), be connected with spring (402) by projection (201), punch back clamper (2) can rotate on a small quantity with respect to caliper cage (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320804938.XU CN203716888U (en) | 2013-12-10 | 2013-12-10 | Clamping power tongs for use in off-angle drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320804938.XU CN203716888U (en) | 2013-12-10 | 2013-12-10 | Clamping power tongs for use in off-angle drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203716888U true CN203716888U (en) | 2014-07-16 |
Family
ID=51156053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320804938.XU Expired - Fee Related CN203716888U (en) | 2013-12-10 | 2013-12-10 | Clamping power tongs for use in off-angle drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203716888U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939035A (en) * | 2013-12-10 | 2014-07-23 | 盐城特达钻采设备有限公司 | Drilling power tongs for inclined well drilling |
-
2013
- 2013-12-10 CN CN201320804938.XU patent/CN203716888U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939035A (en) * | 2013-12-10 | 2014-07-23 | 盐城特达钻采设备有限公司 | Drilling power tongs for inclined well drilling |
| CN103939035B (en) * | 2013-12-10 | 2016-05-25 | 盐城特达钻采设备有限公司 | Punching button Power Tong for a kind of off-angle drilling |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111852332A (en) | Automatic rod adding drilling machine with drill rod box | |
| CN103233687B (en) | Automatic drill pipe assembly and disassembly mechanism of trenchless horizontal directional drilling machine | |
| CN108049828B (en) | It is a kind of can automatic rod drill pipe storage | |
| CN204163447U (en) | The quick flat bed device of multi-storied garage lift platform | |
| CN100569626C (en) | Hydraulic pressure turn-over device of large-scale component | |
| CN103939035B (en) | Punching button Power Tong for a kind of off-angle drilling | |
| CN108248479B (en) | Lifting walking forbidding hydraulic system of lifting pipe transporting vehicle | |
| CN106368200B (en) | The hydraulic bolt jacking system of self-elevating ocean platform | |
| CN201061884Y (en) | Mechanical hand for extracting and transferring drilling rod | |
| CN107877486A (en) | A kind of intelligent piping lane monitoring device with autonomous function | |
| CN203716888U (en) | Clamping power tongs for use in off-angle drilling | |
| CN203295047U (en) | Grab bucket | |
| CN103321612B (en) | Water salvaging type drainage and gas production machine | |
| CN207844999U (en) | Fully-mechanized mining working whole group hydraulic support boom hoisting | |
| CN111472697A (en) | Automatic operation device for minor workover | |
| CN102704725A (en) | Two-layer inclined lifting and transferring parking device | |
| CN102966318B (en) | Marine riser hoisting device | |
| CN105114012B (en) | The safe elevator of automatic protection | |
| CN207142747U (en) | A kind of hydraulic elevator platform of detachable slide rail | |
| CN206830087U (en) | One kind automation drilling rod handler | |
| CN201448062U (en) | Fast moving drilling machine derrick | |
| CN210770672U (en) | Pipeline stop device for hydraulic engineering | |
| CN103628716B (en) | garage lifting platform hydraulic four-wheel braking device | |
| CN104251126A (en) | Well mouth test blowout preventer of water injection well | |
| CN211550966U (en) | Novel crane fixing support |
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: 20140716 |