CN102140898B - Coiled tubing clamping device and injection head using same - Google Patents
Coiled tubing clamping device and injection head using same Download PDFInfo
- Publication number
- CN102140898B CN102140898B CN 201110066307 CN201110066307A CN102140898B CN 102140898 B CN102140898 B CN 102140898B CN 201110066307 CN201110066307 CN 201110066307 CN 201110066307 A CN201110066307 A CN 201110066307A CN 102140898 B CN102140898 B CN 102140898B
- Authority
- CN
- China
- Prior art keywords
- clamping block
- clamping
- clamping device
- grip block
- block
- 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.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/22—Handling reeled pipe or rod units, e.g. flexible drilling pipes
Abstract
The invention provides a coiled tubing clamping device and an injection head using the clamping device, belonging to the field of oil production and drilling equipment. The clamping device comprises a saddle-type clamping block, a clamping block seat and a gasket, wherein the saddle-type clamping block has a groove on the bottom; at least two pairs of hook blocks are arranged on the sidewall of the groove; the clamping block seat includes a hinge pin and a rolling shaft sleeve sheathed on the hinge pin; a position limiting stage and a bolt hole are arranged on the bottom of the clamping blockseat; bosses corresponding to the hook blocks of the clamping block are arranged on both sides of the bottom of the clamping block seat; and two through holes are formed on the lower part of the clamping block seat along the hinge pin direction. The injection head comprises an oil pipe clamping device and a transmission chain, wherein the oil pipe clamping device is mounted on the transmission chain through two hinge pin holes on the clamping block seat. The injection head is convenient in maintenance and has long service life by using the rolling shaft sleeve to substitute for a bearing. The clamping blocks are convenient in replacement, and have a large floating range so as to reduce the abrasion of the oil pipes during operation.
Description
Technical field
The present invention relates to the oil drilling and extracting equipment field, particularly a kind of coiled tubing clamping device also relates to the injection head that uses coiled tubing clamping device of the present invention.
Background technology
Injection head is the core component of continuous oil pipe device, and clamping device provides clamping force for injection head, for delivery of coiled tubing.There is following defective in employed grip block with rolling element on the injection head at present: the one, and the rolling bearing that uses on the clamping device, its application life is short, Maintenance Difficulty, lubricated inconvenience, this is this grip block major defect with rolling element; The 2nd, because the oil field shaft mouth size is various, employed coiled tubing size is also different, and normal wearing and tearing, and injection head needs often to change grip block when work, but used grip block adopts many places to fix at the clamping block, changes complicated.And adopt the fixing mode in many places to make the free gap of grip block on the clamping block less, the automatic adjustment when being unfavorable for grip block clamping oil pipe causes grip block large to the impact of oil pipe, to the serious wear of oil pipe.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of coiled tubing clamping device with the deficiency of the clamping device that overcomes above-mentioned present use.
In order to overcome the above problems, the present invention adopts following scheme:
A kind of coiled tubing clamping device, comprise saddle type grip block and clamping block, it is characterized in that: described saddle type grip block gap is fixed on the described clamping block, and namely saddle type grip block can in the vertical direction along the clamping oil pipe on the clamping block, have certain free gap.
Described clamping block comprises bearing pin and is set in Rolling bearing on the described bearing pin, described clamping block is along the bearing pin direction, be provided with for two through holes that are connected with injection head chain, the top of described clamping block is provided with three road dividing plates, is provided with for the pin shaft hole that bearing pin is installed at described dividing plate.
The back of described saddle type grip block is provided with groove, is provided with at least two pairs of hooked scarfs at the sidewall of groove; The described clamping block back side is provided be used to the limiting stand that limits described grip block position, bolt hole, and both sides are provided with the boss corresponding with the hooked scarf of described grip block.Grip block and clamping block be by described hooked scarf and the interlock of boss phase, and limit the grip block free gap by limiting stand and the bolt hole at the clamping block back side.
Further, corresponding boss is respectively three pairs on the hooked scarf of described grip block and the clamping block.
Further, the present invention also comprises the composite material pad that is padded between described grip block and the described clamping block, and described pad is provided with groove and the hole corresponding with the bottom limiting stand of described clamping block and bolt hole.
Further, the end of described bearing pin also is provided with circlip for shaft.
Further, the circular arc of described saddle type grip block is provided with some grooves perpendicular to the clamping oil pipe.
Further, described Rolling bearing is Ceramic shaft sleeve.
The invention has the beneficial effects as follows: the one, use high-intensity pottery to wait the high-abrasive material axle sleeve to replace rolling bearing, need not to lubricate, the life-span is long, safeguards easily; The 2nd, owing to adopt block on the grip block, and adopt hooked scarf and boss to clamp and the bolt position limiting structure, it is very convenient to change grip block; Because larger gap arranged between block and caging bolt again, can grip block can be servo-actuated when oil pipe has displacement, avoid the rigid extruding to oil pipe.
The present invention also provides a kind of oil pipe injection head, it is characterized in that: comprise above-described coiled tubing clamping device.Concrete scheme is as follows:
A kind of oil pipe injection head comprises chain drive-belt, gripper shoe, push pedal, clamping cylinder, is characterized in: described oil pipe clamping device is installed on the described chain drive-belt.Clamping cylinder is fixed on the gripper shoe, described oil pipe clamping device is installed on the chain drive-belt, described push pedal is movably connected on the gripper shoe by connecting rod, the piston of clamping cylinder is pressed against described push pedal one side, and described push pedal another side is pressed on the rolling element of Holding seat of described oil pipe clamping device.When the oil pipe injection head was worked, push pedal compressed the oil pipe clamping device, and chain drive-belt drives the oil pipe clamping device oil pipe is fed forward, and Rolling bearing rolls at chain pressing plate.
The beneficial effect of this oil pipe injection head is: owing to adopt oil pipe clamping device of the present invention, need not lubricate, so that the maintenance of oil pipe injection head is more convenient, and because the servo-actuated gap of this grip block is large, can be at oil pipe when not being very straight, grip block is avoided the injured or wearing and tearing of oil pipe automatically with moving, the working life that has simultaneously also prolonged the oil pipe injection head, this injection head is very convenient when needs are changed the oil pipe clamping device in addition.
Description of drawings
Fig. 1 is the structural representation of coiled tubing clamping device of the present invention;
Fig. 2 is the grip block front view of coiled tubing clamping device of the present invention;
Fig. 3 is the grip block lateral view of coiled tubing clamping device of the present invention;
Fig. 4 is the clamping block front view of coiled tubing clamping device of the present invention;
Fig. 5 is the clamping block lateral view of coiled tubing clamping device of the present invention;
Fig. 6 is the pad front view of coiled tubing clamping device of the present invention.
Fig. 7 is a kind of oil pipe injection head schematic diagram of this employing coiled tubing clamping device of the present invention.
In Fig. 1-Fig. 6: 1, grip block, 2, pad, 3, bolt, 4, the clamping block, 5, Rolling bearing, 6, bearing pin, 7, circlip for shaft; 101, groove, 102, hooked scarf, 103, groove; 201, groove, 202, the hole; 401, pin shaft hole, 402, through hole, 403, boss, 404, bolt hole, 405, limiting stand, 406, dividing plate.
In Fig. 7: 5, Rolling bearing, 11, the oil pipe clamping device, 12, drive sprocket, 13, chain drive-belt, 14, gripper shoe, 15, push pedal, 16, clamping cylinder, 17, oil cylinder piston, 18, movable rod, 19, axle sleeve.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated:
Such as Fig. 1-shown in Figure 6: a kind of coiled tubing clamping device, comprise saddle type grip block 1 and clamping block 4, described saddle type grip block 1 gap is fixed on the described clamping block 4, be that saddle type grip block 1 can in the vertical direction along the clamping oil pipe on clamping block 4, have certain free gap, the left and right sides.
Described clamping block 4 comprises bearing pin 6 and is set in ceramic Rolling bearing 5 on the described bearing pin 6, clamping block 4 is along bearing pin 6 directions, be provided with for two through holes 402 that are connected with injection head chain, be provided with three road dividing plates 406 on the top of clamping block 4, be provided with for the pin shaft hole 401 that bearing pin 6 is installed at described dividing plate 406.
The back of described saddle type grip block 1 is provided with groove 103, is provided with three pairs of hooked scarfs 102 at the sidewall of groove 103; Described clamping block 4 back sides are provided be used to the limiting stand 405 that limits described grip block 1 position, bolt hole 404, and both sides are provided with the three pair boss 403 corresponding with the hooked scarf 102 of described grip block 1.Grip block 1 and clamping block 4 be by described hooked scarf 102 and boss 403 phase interlocks, and limit grip block 1 free gap by limiting stand 405 and the bolt hole 404 at clamping block 4 back sides, its flying height can avoid to add and hold the oil pipe injury.
The present invention also comprises the pad 2 that is padded between described grip block 1 and the described clamping block 4, described pad 2 is provided with groove 201 and the hole 202 corresponding with the bottom limiting stand 405 of described clamping block 4 and bolt hole 404, this pad can be to have flexible, wear-resisting composite material, such as materials such as polyurethane, abrasive rubbers.
End at bearing pin 6 also is provided with circlip for shaft 7.
Circular arc at saddle type grip block 1 is provided with some grooves 101 perpendicular to the clamping oil pipe, oil pipe is added hold stronger.
The present invention also provides a kind of injection head that adopts above-mentioned coiled tubing clamping device.Concrete scheme is as follows:
As shown in Figure 7: a kind of oil pipe injection head, comprise drive sprocket 12, chain drive-belt 13, gripper shoe 14, push pedal 15, clamping cylinder 16, described gripper shoe 14, clamping cylinder 16, push pedal 15 etc. are installed in the inside of described chain drive-belt 13 closed loop that forms.Be characterized in: the described oil pipe clamping device 11 of many groups is installed on the described chain drive-belt 13 continuously.Gripper shoe 14 is fixed on the frame of injection head, clamping cylinder 16 is fixed on the gripper shoe 14, described oil pipe clamping device 11 is installed on the chain drive-belt 13 by through hole 402, described push pedal 15 is connected on the gripper shoe 14 by movable rod 18, an end of movable rod is oscillating bearing in this example, be connected in the push pedal 15, the other end inserts in the axle sleeve 19 that is fixed on the gripper shoe 14, and movable rod 18 can slide at axle sleeve 19 with push pedal 15 stressing conditions.The oil cylinder piston 17 of clamping cylinder 16 is pressed against described push pedal 15 one sides, and described push pedal 15 another sides are pressed on the Rolling bearing 5 of Holding seat of described oil pipe clamping device 11.When the oil pipe injection head was worked, push pedal 14 compressed oil pipe clamping device 11, and drive sprocket 12 drives chain drive-belt 13, and drive oil pipe clamping device 11 oil pipe is fed forward, Rolling bearing 5 rolls in push pedal 15, and under the effect of two opposites, two saddle types grip block, oil pipe moves to direction initialization.
The above only is preferred embodiments of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement etc., all should be included within protection scope of the present invention.
Claims (7)
1. coiled tubing clamping device, comprise saddle type grip block (1) and clamping block (4), it is characterized in that: described saddle type grip block (1) is fixed on the described clamping block (4), described clamping block (4) comprises bearing pin (6) and is set in Rolling bearing (5) on the described bearing pin, described clamping block (4) is along bearing pin (6) direction, be provided with for two through holes (402) that are connected with injection head chain, the top of described clamping block (4) is provided with three road dividing plates (406), is provided with for the pin shaft hole (401) that bearing pin (6) is installed at described dividing plate (406); The back of described saddle type grip block is provided with groove (103), is provided with at least two pairs of hooked scarfs (102) at the sidewall of groove (103); Described clamping block (4) back side is provided be used to the limiting stand (405) that limits described grip block (1) position, bolt hole (404), both sides are provided with the boss (403) corresponding with the hooked scarf of described grip block (1), grip block (1) and clamping block (4) be by described hooked scarf (102) and boss (403) phase interlock, and limiting stand (405) and bolt hole (404) by the clamping block back side free gap that limits grip block (1).
2. coiled tubing clamping device according to claim 1, it is characterized in that: the hooked scarf (102) on the described saddle type grip block (1) and the boss (403) on the described clamping block (4) are respectively equipped with three pairs.
3. coiled tubing clamping device according to claim 1 and 2, it is characterized in that: also comprise the pad (2) that is padded between described grip block (1) and the described clamping block (4), described pad (2) is provided with groove (201) and hole (202) corresponding with the bottom limiting stand of described clamping block (4) and bolt hole.
4. coiled tubing clamping device according to claim 3, it is characterized in that: the end of described bearing pin (6) also is provided with circlip for shaft (7).
5. coiled tubing clamping device according to claim 4, it is characterized in that: the circular arc of described saddle type grip block (1) is provided with some grooves perpendicular to the clamping oil pipe (101).
6. coiled tubing clamping device according to claim 5, it is characterized in that: described Rolling bearing (5) is Ceramic shaft sleeve.
7. an oil pipe injection head is characterized in that: comprise such as each described coiled tubing clamping device of claim 1～6.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110066307 CN102140898B (en) | 2011-03-18 | 2011-03-18 | Coiled tubing clamping device and injection head using same |
| PCT/CN2011/071987 WO2012126169A1 (en) | 2011-03-18 | 2011-03-21 | Gripping device for coiled tubing and injector using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110066307 CN102140898B (en) | 2011-03-18 | 2011-03-18 | Coiled tubing clamping device and injection head using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102140898A CN102140898A (en) | 2011-08-03 |
| CN102140898B true CN102140898B (en) | 2013-04-17 |
Family
ID=44408664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110066307 Active CN102140898B (en) | 2011-03-18 | 2011-03-18 | Coiled tubing clamping device and injection head using same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102140898B (en) |
| WO (1) | WO2012126169A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11852001B2 (en) | 2019-09-13 | 2023-12-26 | Bj Energy Solutions, Llc | Methods and systems for operating a fleet of pumps |
| US11971028B2 (en) | 2023-05-25 | 2024-04-30 | Bj Energy Solutions, Llc | Systems and method for use of single mass flywheel alongside torsional vibration damper assembly for single acting reciprocating pump |
Families Citing this family (40)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704870B (en) * | 2012-04-19 | 2014-05-07 | 烟台杰瑞石油服务集团股份有限公司 | Coiled tubing clamping device and injection head using same |
| CN103510892A (en) * | 2012-06-27 | 2014-01-15 | 中国石油天然气集团公司 | Fixing structure capable of fast replacing clamping block for coiled tubing injection head |
| CN202900097U (en) | 2012-11-21 | 2013-04-24 | 烟台杰瑞石油服务集团股份有限公司 | Continuous oil pipe clamp mechanism |
| CN103884496B (en) * | 2012-12-20 | 2016-03-09 | 中国石油天然气集团公司 | Continuous tube injection head test simulation charger |
| CN103105264A (en) * | 2013-02-04 | 2013-05-15 | 侯如升 | Pressure meter mounting base for pressure testing machine |
| CN104251130A (en) * | 2013-06-28 | 2014-12-31 | 中国石油天然气集团公司 | Transmission device for providing injection force for sieve tube special for coal bed gas |
| CN104790890A (en) * | 2015-03-31 | 2015-07-22 | 南京晨光集团有限责任公司 | Coiled tubing four-drive injection head |
| CN105888586A (en) * | 2016-05-04 | 2016-08-24 | 马怡鑫 | Acid-proof semi-shaft |
| US11624326B2 (en) | 2017-05-21 | 2023-04-11 | Bj Energy Solutions, Llc | Methods and systems for supplying fuel to gas turbine engines |
| US11560845B2 (en) | 2019-05-15 | 2023-01-24 | Bj Energy Solutions, Llc | Mobile gas turbine inlet air conditioning system and associated methods |
| US10989180B2 (en) | 2019-09-13 | 2021-04-27 | Bj Energy Solutions, Llc | Power sources and transmission networks for auxiliary equipment onboard hydraulic fracturing units and associated methods |
| US11015536B2 (en) | 2019-09-13 | 2021-05-25 | Bj Energy Solutions, Llc | Methods and systems for supplying fuel to gas turbine engines |
| CA3092859A1 (en) | 2019-09-13 | 2021-03-13 | Bj Energy Solutions, Llc | Fuel, communications, and power connection systems and related methods |
| US11002189B2 (en) | 2019-09-13 | 2021-05-11 | Bj Energy Solutions, Llc | Mobile gas turbine inlet air conditioning system and associated methods |
| US11015594B2 (en) | 2019-09-13 | 2021-05-25 | Bj Energy Solutions, Llc | Systems and method for use of single mass flywheel alongside torsional vibration damper assembly for single acting reciprocating pump |
| CA3092865C (en) | 2019-09-13 | 2023-07-04 | Bj Energy Solutions, Llc | Power sources and transmission networks for auxiliary equipment onboard hydraulic fracturing units and associated methods |
| US10895202B1 (en) | 2019-09-13 | 2021-01-19 | Bj Energy Solutions, Llc | Direct drive unit removal system and associated methods |
| US11555756B2 (en) | 2019-09-13 | 2023-01-17 | Bj Energy Solutions, Llc | Fuel, communications, and power connection systems and related methods |
| CA3092829C (en) | 2019-09-13 | 2023-08-15 | Bj Energy Solutions, Llc | Methods and systems for supplying fuel to gas turbine engines |
| US11708829B2 (en) | 2020-05-12 | 2023-07-25 | Bj Energy Solutions, Llc | Cover for fluid systems and related methods |
| US10968837B1 (en) | 2020-05-14 | 2021-04-06 | Bj Energy Solutions, Llc | Systems and methods utilizing turbine compressor discharge for hydrostatic manifold purge |
| US11428165B2 (en) | 2020-05-15 | 2022-08-30 | Bj Energy Solutions, Llc | Onboard heater of auxiliary systems using exhaust gases and associated methods |
| US11208880B2 (en) | 2020-05-28 | 2021-12-28 | Bj Energy Solutions, Llc | Bi-fuel reciprocating engine to power direct drive turbine fracturing pumps onboard auxiliary systems and related methods |
| US11208953B1 (en) | 2020-06-05 | 2021-12-28 | Bj Energy Solutions, Llc | Systems and methods to enhance intake air flow to a gas turbine engine of a hydraulic fracturing unit |
| US10961908B1 (en) | 2020-06-05 | 2021-03-30 | Bj Energy Solutions, Llc | Systems and methods to enhance intake air flow to a gas turbine engine of a hydraulic fracturing unit |
| US11109508B1 (en) | 2020-06-05 | 2021-08-31 | Bj Energy Solutions, Llc | Enclosure assembly for enhanced cooling of direct drive unit and related methods |
| US11022526B1 (en) | 2020-06-09 | 2021-06-01 | Bj Energy Solutions, Llc | Systems and methods for monitoring a condition of a fracturing component section of a hydraulic fracturing unit |
| US11066915B1 (en) | 2020-06-09 | 2021-07-20 | Bj Energy Solutions, Llc | Methods for detection and mitigation of well screen out |
| US10954770B1 (en) | 2020-06-09 | 2021-03-23 | Bj Energy Solutions, Llc | Systems and methods for exchanging fracturing components of a hydraulic fracturing unit |
| US11028677B1 (en) | 2020-06-22 | 2021-06-08 | Bj Energy Solutions, Llc | Stage profiles for operations of hydraulic systems and associated methods |
| US11933153B2 (en) | 2020-06-22 | 2024-03-19 | Bj Energy Solutions, Llc | Systems and methods to operate hydraulic fracturing units using automatic flow rate and/or pressure control |
| US11939853B2 (en) | 2020-06-22 | 2024-03-26 | Bj Energy Solutions, Llc | Systems and methods providing a configurable staged rate increase function to operate hydraulic fracturing units |
| US11125066B1 (en) | 2020-06-22 | 2021-09-21 | Bj Energy Solutions, Llc | Systems and methods to operate a dual-shaft gas turbine engine for hydraulic fracturing |
| US11466680B2 (en) | 2020-06-23 | 2022-10-11 | Bj Energy Solutions, Llc | Systems and methods of utilization of a hydraulic fracturing unit profile to operate hydraulic fracturing units |
| US11473413B2 (en) | 2020-06-23 | 2022-10-18 | Bj Energy Solutions, Llc | Systems and methods to autonomously operate hydraulic fracturing units |
| US11220895B1 (en) | 2020-06-24 | 2022-01-11 | Bj Energy Solutions, Llc | Automated diagnostics of electronic instrumentation in a system for fracturing a well and associated methods |
| US11149533B1 (en) | 2020-06-24 | 2021-10-19 | Bj Energy Solutions, Llc | Systems to monitor, detect, and/or intervene relative to cavitation and pulsation events during a hydraulic fracturing operation |
| US11193360B1 (en) | 2020-07-17 | 2021-12-07 | Bj Energy Solutions, Llc | Methods, systems, and devices to enhance fracturing fluid delivery to subsurface formations during high-pressure fracturing operations |
| CN112983316B (en) * | 2021-04-22 | 2021-10-19 | 山东威盟石油机械有限公司 | Coiled tubing righting device |
| US11639654B2 (en) | 2021-05-24 | 2023-05-02 | Bj Energy Solutions, Llc | Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6189609B1 (en) * | 1998-09-23 | 2001-02-20 | Vita International, Inc. | Gripper block for manipulating coil tubing in a well |
| US6527055B1 (en) * | 2001-09-28 | 2003-03-04 | Coiled Tubing Solutions, Inc. | Thrust enhancement device for coiled tubing injectors |
| US6892810B2 (en) * | 2003-03-25 | 2005-05-17 | Halliburton Energy Services, Inc. | Gripper block for coiled tubing injector with variable tubing size capability |
| US8132617B2 (en) * | 2008-10-27 | 2012-03-13 | David Brian Magnus | Gripper block |
| CN201297134Y (en) * | 2008-11-27 | 2009-08-26 | 胜利油田高原石油装备有限责任公司 | A coiled tubing (pole) clamping block unit equipment |
| CN202055781U (en) * | 2011-03-18 | 2011-11-30 | 烟台杰瑞石油服务集团股份有限公司 | Coiled tubing clamping device and injection head utilizing same |
-
2011
- 2011-03-18 CN CN 201110066307 patent/CN102140898B/en active Active
- 2011-03-21 WO PCT/CN2011/071987 patent/WO2012126169A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11852001B2 (en) | 2019-09-13 | 2023-12-26 | Bj Energy Solutions, Llc | Methods and systems for operating a fleet of pumps |
| US11971028B2 (en) | 2023-05-25 | 2024-04-30 | Bj Energy Solutions, Llc | Systems and method for use of single mass flywheel alongside torsional vibration damper assembly for single acting reciprocating pump |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012126169A1 (en) | 2012-09-27 |
| CN102140898A (en) | 2011-08-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102140898B (en) | Coiled tubing clamping device and injection head using same | |
| CN202055781U (en) | Coiled tubing clamping device and injection head utilizing same | |
| CN102704870B (en) | Coiled tubing clamping device and injection head using same | |
| CN202000930U (en) | Floating clamping device for injection head of continuous oil pipe | |
| CN202655396U (en) | Hydraulic stretching straightening machine | |
| CN102728664A (en) | Hydraulic stretching machine | |
| CN102491087A (en) | Electronic element clamping and conveying mechanism | |
| CN202296408U (en) | A green brick clamping device of a setting machine | |
| CN201482802U (en) | Billet feeding stand | |
| CN102765430A (en) | Combined tensioning mechanism for caterpillar band | |
| CN205554695U (en) | Packagine machine lapel ware forming device | |
| CN201271696Y (en) | Forward erection wear resistant wedge mechanism | |
| KR101044650B1 (en) | Caisson carrier | |
| CN202527631U (en) | Steel bar clamping device | |
| CN202316613U (en) | Quick die replacing device for extruder | |
| CN207296889U (en) | A kind of rock drill propulsive mechanism | |
| CN203173286U (en) | Conveying belt wear-resistant support plate used in ceramic strickling, polishing and waxing production lines | |
| CN206010312U (en) | Valve body and the pallet carrying unit of rubber ring assemble mechanism | |
| CN202744766U (en) | Lining sliding plate for warp knitting machine | |
| CN202071915U (en) | Novel caterpillar belt tensioning mechanism | |
| CN202123128U (en) | Buffering device for straightener | |
| CN209492020U (en) | Multiple groups rope saw saw rope guide rail mechanism | |
| CN214140144U (en) | Industrial conveying chain long shaft replacement device | |
| CN207329486U (en) | Conveyer hydraulic damping plate | |
| CN201736330U (en) | Push-pull type rapid distributing mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Dong Inventor after: Yu Qingfeng Inventor after: Fang Jilei Inventor before: Li Gerui Inventor before: Yu Qingfeng Inventor before: Fang Jilei Inventor before: Liu Dong |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LI GERUI YU QINGFENG FANG JILEI LIU DONG TO: LIU DONG YU QINGFENG FANG JILEI |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |