CN203603800U - Hot assembly device for connection between rod body of aluminum alloy drill rod and steel connector - Google Patents
Hot assembly device for connection between rod body of aluminum alloy drill rod and steel connector Download PDFInfo
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- CN203603800U CN203603800U CN201320843694.6U CN201320843694U CN203603800U CN 203603800 U CN203603800 U CN 203603800U CN 201320843694 U CN201320843694 U CN 201320843694U CN 203603800 U CN203603800 U CN 203603800U
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Abstract
The utility model discloses a hot assembly device for connection between a rod body of an aluminum alloy drill rod and a steel connector. The hot assembly device is composed of a steel connector heating mechanism, a feeding mechanism, a steel connector rotation mechanism, a rod body clamping mechanism, an internal cooling mechanism of the rod body of the aluminum alloy drill rod, an external cooling mechanism of the steel connector, a parameter detection mechanism and an experiment bench. The hot assembly device is used for assembling the rod body of the aluminum alloy drill rod and the steel connector. At the time of hot assembly, firstly, the steel connector is heated to a certain temperature to be expanded; secondly, the steel connector is screwed onto the rod body of the aluminum alloy drill rod in the hot state; thirdly, the steel connector is cooled; after cooling, the threaded connection portion can obtain certain pretightening force, and therefore the requirements that the aluminum alloy drill rod transmits torque and bears loads are met. According to the hot assembly device, hot assembly through the hot assembly device can be realized just through replacement of drill rod bodies and connectors on the same experiment bench, wherein the drill rod bodies are made of different materials and have different diameters, the connectors are made of different materials and have different diameters, and therefore connection strength and connection reliability are improved.
Description
Technical field
The utility model relates to a kind of aluminium drill pipe body of rod and is connected the hot apparatus for assembling using with steel joint.
Background technology
Reconnoitre in the drilling process of exploitation at geological prospecting, petroleum gas, coal, metal mine etc., all need to use drilling rod.Along with the increase of drilling depth, difficulty is also increasing, higher to the quality requirement of drilling rod.Aluminium drill pipe has the advantages such as density is little, specific strength is high, corrosion resistance is strong, along with its advantage of increase of drilling depth is more obvious, but its abrasion resistance is lower, and in drill-well operation, joint needs unloading frequently, therefore in the time that reality is used, generally aluminium alloy drill pipe body and steel joint are fitted together to formation drill string, bear unloading by steel joint and operate.Because aluminium alloys and steel are in the difference of the aspects such as modulus of elasticity, coefficient of thermal expansion, elongation per unit length, yield strength, often there is connecting insecure situation.The connection of the drilling rod body of rod and joint is also the weak link of drilling rod always.
The general method that the aluminium drill pipe body of rod is applied to certain moment of torsion and the assembling of steel joint that adopts, although the method application is wider, but there is its weak point, as in the time that aluminium drill pipe and steel joint relatively move along screw thread simultaneously, in the time reaching higher contact, still can not avoid local aluminium alloys and steel to link closely completely.In the time that the place of such fastening is a lot, in assembling process, be threaded and may be stuck, joint such in use procedure afterwards can damage.
Summary of the invention
A kind of aluminium drill pipe body of rod that provides of the purpose of this utility model is connected the hot apparatus for assembling using with steel joint.The utility model adopts hot apparatus for assembling to carry out the assembling of the aluminium drill pipe body of rod and steel joint.When heat assembling, first steel joint is heated to uniform temperature it is expanded, under hot state, be screwed to subsequently on the aluminium drill pipe body of rod, cooling to it subsequently, connection of thread can obtain certain pretightning force after cooling, meets the needs of aluminium drill pipe transmitting torque and bearing load.
The utility model is made up of cooling body, steel joint external refrigeration mechanism, parameter detecting mechanism and experimental stand in steel joint heating arrangements, feed mechanism, steel joint slew gear, body of rod clamping device, the aluminium drill pipe body of rod;
The induction heater of described steel joint heating arrangements is fixed on sliding support, and induction heater is connected with induction coil, and induction coil is sleeved on steel joint, can heat steel joint, after heating, can take out induction coil;
The handwheel of described feed mechanism is threaded connection on leading screw, the leading screw other end is fixed on experimental stand by leading screw fixed head, on leading screw, be connected with clasp nut, clasp nut top is connected with sliding support, slide block is fixed on below sliding support, slide block is connected with guide rail, can do rectilinear motion by guide rail, and guide rail is fixed on experimental stand;
Described steel joint slew gear is fixed on sliding support, the motor of steel joint slew gear is arranged on sliding support by fixed head, the output shaft sprocket wheel of motor is arranged on motor output shaft, chain winding is on output shaft sprocket wheel and power transmission shaft sprocket wheel, power transmission shaft sprocket wheel is fixed on by power transmission shaft and bearing support on the fixed head that is positioned at sliding support, power transmission shaft connects torque sensor, connection slip ring stationary pipes again, the slip ring stationary pipes other end connects reducer union, and be arranged on by bearing support on the installing plate that is positioned at sliding support, slip ring is arranged in slip ring stationary pipes, reducer union connects steel joint, steel joint underneath is equipped with rolling support, rolling support is connected on sliding support, rolling support can rotate with steel joint, play correcting effect, make steel joint guarantee parallelism.
Described body of rod clamping device is fixed on experimental stand by fixed base plate, body of rod clamping device clamps the aluminium drill pipe body of rod by three clamp screws on clamper, three clamp screws are arranged in same plane, equal angles is arranged, semicircle clamper is bolted to hold tightly clamper, semicircle clamper is connected and fixed base plate below by bolt, and can adjust the height of the aluminium drill pipe body of rod by adjusting bolt, with steel joint at same plane.
In the described aluminium alloys body of rod, the water tank of cooling body is placed on below experimental stand, water pump is communicated with water tank, water pump draws water from water tank, enter the intake tunnel of two cooled wall pipe by water inlet pipe, from the hydrophthalmia of intake tunnel, spray, be sprayed onto on the threaded area inwall of the aluminium drill pipe body of rod, rubber pad is placed in order to sealing in the two ends of two cooled wall pipe, make water enter return pipe by the discharge-channel of two cooled wall pipe again and return to water tank, form closed cycle, screen pack is set in water tank.
The submersible pump of described steel joint external refrigeration mechanism is placed in water tank, connects annular cooler by outer cooling water pipe, and annular cooler inwall is provided with hole for water spraying, and hole for water spraying circularizes arranges, and can carry out 360 ° of water sprays to steel joint cooling, forms circulation;
The recording instrument without paper of described parameter detecting mechanism is placed on the fixed base plate on experimental stand, parameter detecting mechanism by sensor the heating-up temperature in heating process, steel connector temperature, aluminium drill pipe body of rod temperature, coolant rate, upper button rotating speed, these key parameters of torque wrench moment collect in recording instrument without paper, detect in real time, on steel joint and the aluminium drill pipe body of rod, be furnished with temperature pick up.
The utility model adopts hot apparatus for assembling to carry out the assembling of the aluminium drill pipe body of rod and steel joint.When heat assembling, first steel joint is heated to uniform temperature it is expanded, under hot state, be screwed to subsequently on the aluminium drill pipe body of rod, cooling to it subsequently, connection of thread can obtain certain pretightning force after cooling, meets the needs of aluminium drill pipe transmitting torque and bearing load.
Specific works process of the present utility model is:
Steel joint heating arrangements of the present utility model is that steel joint is heated to the required temperature of assembling; Feed mechanism is heated at steel joint after the high temperature needing, and drives steel joint to advance to aluminium drill pipe body of rod direction, to steel joint front end face and aluminium drill pipe body of rod end contact, screw-threaded engagement; In the aluminium drill pipe body of rod, cooling body starts simultaneously, forms closed cycle by two cooled wall pipe, and cooling aluminium alloys body of rod inside prevents from, because the temperature that the steel joint of contact high temperature brings raises, causing the reduction of its strength of materials; Steel joint slew gear, after steel joint contacts with the aluminium drill pipe body of rod, makes the revolution of steel joint, along being threaded into the aluminium drill pipe body of rod, reaches counterface, forms reliably and connects; The centre-height of the body of rod clamping device capable of regulating aluminium drill pipe body of rod, makes itself and steel joint at same plane, and the fixing aluminium drill pipe body of rod; Steel joint external refrigeration mechanism provides cooling after assembling completes, and makes steel connector temperature drop to room temperature; And parameter detecting mechanism can be by sensor the heating-up temperature in whole process, coolant rate, steel connector temperature, aluminium drill pipe body of rod temperature, upper button rotating speed, these key parameters of torque wrench moment collect in recorder, detect in real time.
The beneficial effects of the utility model are:
Realize the reliable connection of aluminium drill pipe and steel joint by hot assemble method, steel connector temperature is raise, produce and expand, simultaneously at aluminium alloys body internal cooling, the temperature of the aluminium alloys body of rod is controlled in the scope of material license, realizes both secure fit, produce pretightning force.The utility model can, on same experimental stand, only by changing the drilling rod body of rod and the joint of unlike material and size, be realized its heat assembling, improves its bonding strength and reliability.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model.
Fig. 2 is top view of the present utility model.
Fig. 3 is left view of the present utility model.
Fig. 4 is schematic perspective view of the present utility model.
In figure: 1-steel joint heating arrangements; 11-induction heater; 12-heater coil; 13-steel joint; 2-feed mechanism; 21-handwheel; 22-leading screw; 23-clasp nut; 24-sliding support; 25-leading screw fixed head; 26-slide block; 27-guide rail; 3-slew gear; 31-motor; 32-output shaft sprocket wheel; 33-chain; 34-power transmission shaft sprocket wheel; 35-bearing support; 36-power transmission shaft; 37-torque sensor; 38-slip ring stationary pipes; 39-slip ring; 310-reducer union; 311-rolling support; 13-steel joint; 4-body of rod clamping device; 41-aluminium drill pipe body of rod; 42-clamp screws; 43-clamper; 44-semi-circular clamper; 45-fixed base plate; Cooling body in 5-aluminium drill pipe body of rod; 51-water tank; 52-water pump; 53-screen pack; 54-water inlet pipe; 55-return pipe; 56-two cooled wall pipe; 57-rubber pad; 6-steel joint external refrigeration mechanism; 61-submersible pump; 62-outer cooling water pipe; 63-annular cooler; 7-parameter detecting mechanism; 71-recording instrument without paper; 72-temperature pick up; 8-experimental stand.
The specific embodiment
The utility model is made up of cooling body 5, steel joint external refrigeration mechanism 6, parameter detecting mechanism 7 and experimental stand 8 in steel joint heating arrangements 1, feed mechanism 2, steel joint slew gear 3, body of rod clamping device 4, the aluminium drill pipe body of rod;
The induction heater 11 of described steel joint heating arrangements 1 is fixed on sliding support 24, and induction heater 11 is connected with induction coil 12, and induction coil 12 is sleeved on steel joint 13, can heat steel joint 13, after heating, can take out induction coil 12;
The handwheel 21 of described feed mechanism 2 is threaded connection on leading screw 22, leading screw 22 other ends are fixed on experimental stand by leading screw fixed head 25, on leading screw 22, be connected with clasp nut 23, clasp nut 23 tops are connected with sliding support 24, slide block 26 is fixed on below sliding support 24, slide block 26 is connected with guide rail 27, can do rectilinear motion by guide rail 27, and guide rail 27 is fixed on experimental stand 8;
Described steel joint slew gear 3 is fixed on sliding support 24, the motor 31 of steel joint slew gear 3 is arranged on sliding support 24 by fixed head, the output shaft sprocket wheel 32 of motor 31 is arranged on motor 31 output shafts, chain 33 windings are on output shaft sprocket wheel 32 and power transmission shaft sprocket wheel 34, power transmission shaft sprocket wheel 34 is fixed on the fixed head that is positioned at sliding support 24 by power transmission shaft 36 and bearing support 35, power transmission shaft 36 connects torque sensor 37, connection slip ring stationary pipes 38 again, slip ring stationary pipes 38 other ends connect reducer union 310, and be arranged on by bearing support on the installing plate that is positioned at sliding support 24, slip ring 39 is arranged in slip ring stationary pipes 38, reducer union 310 connects steel joint 13, steel joint 13 underneath are equipped with rolling support 311, rolling support 311 is connected on sliding support 24, rolling support 311 can rotate with steel joint 13, play correcting effect, make steel joint 13 guarantee parallelism.
Described body of rod clamping device 4 is fixed on experimental stand 8 by fixed base plate 45, body of rod clamping device 4 clamps the aluminium drill pipe body of rod 41 by three clamp screws 42 on clamper 43, three clamp screws 42 are arranged in same plane, equal angles is arranged, semicircle clamper 44 is bolted to hold tightly clamper 43, semicircle clamper 44 is connected and fixed base plate 45 below by bolt, and can adjust the height of the aluminium drill pipe body of rod 41 by adjusting bolt, with steel joint 13 at same plane.
In the described aluminium alloys body of rod, the water tank 51 of cooling body 5 is placed on below experimental stand 8, water pump 52 is communicated with water tank 51, water pump 52 draws water from water tank 51, enter the intake tunnel of two cooled wall pipe 56 by water inlet pipe 54, from the hydrophthalmia of intake tunnel, spray, be sprayed onto on the threaded area inwall of the aluminium drill pipe body of rod 41, rubber pad 57 is placed in order to sealing in the two ends of two cooled wall pipe 56, make water enter return pipe 55 by the discharge-channel of two cooled wall pipe 56 again and return to water tank 51, form closed cycle, screen pack 53 is set in water tank 51.
The submersible pump 61 of described steel joint external refrigeration mechanism 6 is placed in water tank 51, connect annular cooler 63 by outer cooling water pipe 62, annular cooler 63 inwalls are provided with hole for water spraying, and hole for water spraying circularizes arranges, can carry out 360 ° of water sprays to steel joint 13 cooling, form circulation;
The recording instrument without paper 71 of described parameter detecting mechanism 7 is placed on the fixed base plate 45 on experimental stand 8, parameter detecting mechanism 7 by sensor the heating-up temperature in heating process, steel joint 13 temperature, the aluminium drill pipe body of rod 41 temperature, coolant rate, upper button rotating speed, these key parameters of torque wrench moment collect in recording instrument without paper 71, detect in real time, on steel joint 13 and the aluminium drill pipe body of rod 41, be furnished with temperature pick up 72.
The course of work of the present utility model is:
Steel joint heating arrangements 1 uses induction heater 11, by heater coil 12, steel joint 13 is heated to temperature required.
Be heated to temperature required after, induction heater 11 is shut down, heater coil 12 is taken out, and feed mechanism 2 is started working, and rotates handwheel 21, drive leading screw 22 to rotate, drive sliding support 24 by leading screw 22 clasp nut 23 above, sliding support 24 does rectilinear motion by slide block 26 on guide rail 27, and steel joint 13 is close to the aluminium drill pipe body of rod 41, to steel joint 13 front end faces and the aluminium drill pipe body of rod 41 end contacts, screw-threaded engagement; Leading screw 22 is fixed on experimental stand 8 by leading screw fixed head 25.
In the aluminium alloys body of rod, cooling body 5 starts simultaneously, form closed cycle by two cooled wall pipe 56, water pump 52 draws water from water tank 51, enter the intake tunnel of two cooled wall pipe 56 by water inlet pipe 54, from the hydrophthalmia of intake tunnel, spray, be sprayed onto on the threaded area inwall of the aluminium drill pipe body of rod 41, rubber pad 57 is placed at the two ends of two cooled wall pipe 56, in order to sealing, make water enter return pipe 55 by the discharge-channel of two cooled wall pipe 56 again and return to water tank 51, form closed cycle, screen pack 53 is set in water tank 51, guarantee water quality.
Steel joint slew gear 3 is after steel joint 13 contacts with the aluminium drill pipe body of rod 41, motor 31 is by output shaft sprocket wheel 32, use chain 33 that gyration is passed to power transmission shaft sprocket wheel 34, by bearing support 35, power transmission shaft 36, use reducer union 310 to connect steel joint 13, make its revolution, along being threaded into the aluminium drill pipe body of rod 41, reach counterface, centre is separately provided with torque sensor 37, for detection of torque wrench moment, and slip ring 39, steel joint 13 temperature pick up 72 above can be spread out of holding wire in the time that steel joint 13 is rotating, and can not be wound, slip ring 39 connects reducer union 310 by slip ring stationary pipes 38 one end, and one end is connected with torque sensor 37, is fixed on sliding support 24 by bearing support.Steel joint 13 underneath are equipped with rolling support 311, can follow steel joint 13 and rotate, and play centralizing function, make steel joint keeping parallelism degree, are beneficial to assembling.
Body of rod clamping device 4 clamps the aluminium drill pipe body of rod 41 by three clamp screws 42 on clamper 43, carry out clamping holder 43 by semi-circular clamper 44, semicircle clamper 44 is bolted on fixed base plate 45, can adjust by adjusting bolt the height of the aluminium drill pipe body of rod,, and be fixed on test-bed by fixed base plate 45 at same plane with steel joint.
Steel joint external refrigeration mechanism 6 provides cooling after assembling completes, by being placed on water tank 51(and interior cooling sharing) inner submersible pump 61, extract water, current flow into annular cooler 63 by outer cooling water pipe 62, its inwall is provided with hole for water spraying, hole for water spraying circularizes arranges, and can carry out 360 ° of water sprays to steel joint cooling, good cooling results, make steel connector temperature drop to room temperature, form circulation, this circulation is for open circulation, needs in time toward supplementing water in water tank in assembling process.
Parameter detecting mechanism 7 can be by sensor the heating-up temperature in heating process, steel joint 13 temperature, the aluminium drill pipe body of rod 41 temperature, coolant rate, upper button rotating speed, these key parameters of torque wrench moment collect in recording instrument without paper 71, detect in real time, on steel joint 13 and the aluminium drill pipe body of rod 41, are furnished with temperature pick up 72.Whole mechanism is arranged on experimental stand 8, and compact in design takes up room little.
Steel joint heating arrangements 1 of the present utility model is assembled required temperature for steel joint 13 is heated to; Feed mechanism 2 is heated at steel joint 13 after the high temperature needing, and drives steel joint 13 to advance to the aluminium drill pipe body of rod 41 directions, to steel joint 13 front end faces and the aluminium drill pipe body of rod 41 end contacts, screw-threaded engagement; The aluminium drill pipe body of rod 41 interior cooling bodies 5 start simultaneously, form closed cycle by two cooled wall pipe, and cooling aluminium alloys body of rod inside prevents from, because the temperature that the steel joint of contact high temperature brings raises, causing the reduction of its strength of materials; Steel joint slew gear 3, after steel joint 13 contacts with the aluminium drill pipe body of rod 41, turns round steel joint 13, along being threaded into the aluminium drill pipe body of rod 41, reaches counterface, forms reliably and connects; The centre-height of the body of rod clamping device 4 capable of regulating aluminium drill pipe bodies of rod 41, makes itself and steel joint 13 at same plane, and the fixing aluminium drill pipe body of rod 41; Steel joint external refrigeration mechanism 6 provides cooling after assembling completes, and makes steel joint 13 temperature drop to room temperature; And parameter detecting mechanism 7 can be by sensor the heating-up temperature in whole process, coolant rate, steel joint 13 temperature, the aluminium drill pipe body of rod 41 temperature, upper button rotating speed, these key parameters of torque wrench moment collect in recorder, detect in real time.
Claims (1)
1. the aluminium drill pipe body of rod is connected the hot apparatus for assembling using with steel joint, it is characterized in that: be made up of cooling body (5), steel joint external refrigeration mechanism (6), parameter detecting mechanism (7) and experimental stand (8) in steel joint heating arrangements (1), feed mechanism (2), steel joint slew gear (3), body of rod clamping device (4), the aluminium drill pipe body of rod;
The induction heater (11) of described steel joint heating arrangements (1) is fixed on sliding support (24), induction heater (11) is connected with induction coil (12), induction coil (12) is sleeved on steel joint (13), can heat steel joint (13), after heating, take out induction coil (12);
The handwheel (21) of described feed mechanism (2) is threaded connection on leading screw (22), leading screw (22) other end is fixed on experimental stand by leading screw fixed head (25), on leading screw (22), be connected with clasp nut (23), clasp nut (23) top is connected with sliding support (24), slide block (26) is fixed on below sliding support (24), slide block (26) is connected with guide rail (27), can do rectilinear motion by guide rail (27), guide rail (27) is fixed on experimental stand (8);
Described steel joint slew gear (3) is fixed on sliding support (24), the motor (31) of steel joint slew gear (3) is arranged on sliding support (24) by fixed head, the output shaft sprocket wheel (32) of motor (31) is arranged on motor (31) output shaft, chain (33) winding is on output shaft sprocket wheel (32) and power transmission shaft sprocket wheel (34), power transmission shaft sprocket wheel (34) is fixed on the fixed head that is positioned at sliding support (24) by power transmission shaft (36) and bearing support (35), power transmission shaft (36) connects torque sensor (37), connection slip ring stationary pipes (38) again, slip ring stationary pipes (38) other end connects reducer union (310), and be arranged on by bearing support on the installing plate that is positioned at sliding support (24), slip ring (39) is arranged in slip ring stationary pipes (38), reducer union (310) connects steel joint (13), steel joint (13) underneath is equipped with rolling support (311), rolling support (311) is connected on sliding support (24), rolling support (311) can rotate with steel joint (13),
Described body of rod clamping device (4) is fixed on experimental stand (8) by fixed base plate (45), body of rod clamping device (4) clamps the aluminium drill pipe body of rod (41) by three clamp screws (42) on clamper (43), three clamp screws (42) are arranged in same plane, equal angles is arranged, semicircle clamper (44) is bolted to hold tightly clamper (43), semicircle clamper (44) is connected and fixed base plate (45) below by bolt, and can adjust the height of the aluminium drill pipe body of rod (41) by adjusting bolt, with steel joint (13) at same plane,
In the described aluminium alloys body of rod, the water tank (51) of cooling body (5) is placed on experimental stand (8) below, water pump (52) is communicated with water tank (51), water pump (52) draws water from water tank (51), enter the intake tunnel of two cooled wall pipe (56) by water inlet pipe (54), from the hydrophthalmia of intake tunnel, spray, be sprayed onto on the threaded area inwall of the aluminium drill pipe body of rod (41), rubber pad (57) is placed in order to sealing in the two ends of two cooled wall pipe (56), make water enter return pipe (55) by the discharge-channel of two cooled wall pipe (56) again and return to water tank (51), form closed cycle, screen pack (53) is set in water tank (51),
The submersible pump (61) of described steel joint external refrigeration mechanism (6) is placed in water tank (51), connect annular cooler (63) by outer cooling water pipe (62), annular cooler (63) inwall is provided with hole for water spraying, hole for water spraying circularizes arranges, can carry out 360 ° of water sprays to steel joint (13) cooling, form circulation;
The recording instrument without paper (71) of described parameter detecting mechanism (7) is placed on the fixed base plate (45) on experimental stand (8), parameter detecting mechanism (7) by sensor the heating-up temperature in heating process, steel joint (13) temperature, the aluminium drill pipe body of rod (41) temperature, coolant rate, upper button rotating speed, torque wrench moment collects in recording instrument without paper (71), on steel joint (13) and the aluminium drill pipe body of rod (41), is furnished with temperature pick up (72).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320843694.6U CN203603800U (en) | 2013-12-19 | 2013-12-19 | Hot assembly device for connection between rod body of aluminum alloy drill rod and steel connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320843694.6U CN203603800U (en) | 2013-12-19 | 2013-12-19 | Hot assembly device for connection between rod body of aluminum alloy drill rod and steel connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203603800U true CN203603800U (en) | 2014-05-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320843694.6U Withdrawn - After Issue CN203603800U (en) | 2013-12-19 | 2013-12-19 | Hot assembly device for connection between rod body of aluminum alloy drill rod and steel connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203603800U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643907A (en) * | 2013-12-19 | 2014-03-19 | 吉林大学 | Thermal assembly device used for connecting aluminium alloy drill rod body with steel joint |
| CN108607745A (en) * | 2016-12-27 | 2018-10-02 | 北京联合涂层技术有限公司 | The thermal spraying apparatus of workpiece inner wall spraying |
| CN112676870A (en) * | 2020-12-16 | 2021-04-20 | 中煤科工集团西安研究院有限公司 | Drill rod buckling device for machining drill rod spiral groove, drill rod loading and unloading system and method |
-
2013
- 2013-12-19 CN CN201320843694.6U patent/CN203603800U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643907A (en) * | 2013-12-19 | 2014-03-19 | 吉林大学 | Thermal assembly device used for connecting aluminium alloy drill rod body with steel joint |
| CN108607745A (en) * | 2016-12-27 | 2018-10-02 | 北京联合涂层技术有限公司 | The thermal spraying apparatus of workpiece inner wall spraying |
| CN112676870A (en) * | 2020-12-16 | 2021-04-20 | 中煤科工集团西安研究院有限公司 | Drill rod buckling device for machining drill rod spiral groove, drill rod loading and unloading system and method |
| CN112676870B (en) * | 2020-12-16 | 2021-11-30 | 中煤科工集团西安研究院有限公司 | Drill rod buckling device for machining drill rod spiral groove, drill rod loading and unloading system and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140521 Effective date of abandoning: 20150722 |
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| RGAV | Abandon patent right to avoid regrant |