CN102848125A - Combined type mountain internal clamp capable of being positioned quickly and accurately - Google Patents
Combined type mountain internal clamp capable of being positioned quickly and accurately Download PDFInfo
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- CN102848125A CN102848125A CN201210259497XA CN201210259497A CN102848125A CN 102848125 A CN102848125 A CN 102848125A CN 201210259497X A CN201210259497X A CN 201210259497XA CN 201210259497 A CN201210259497 A CN 201210259497A CN 102848125 A CN102848125 A CN 102848125A
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- vehicle frame
- driving wheel
- support arm
- sliding sleeve
- brake shoes
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Abstract
A combined type mountain internal clamp capable of being positioned quickly and accurately comprises an ascending safety guaranteeing vehicle, a clamp body, an air storage tank and a descending safety guaranteeing vehicle, wherein a first connecting ring is installed on one side of the clamp body, the other side of the clamp body is connected with one side of the air storage tank through a hinge, a second connecting ring is arranged on the other side of the air storage tank, a first hoisting machine is installed inside a first vehicle frame, a wire rope on the first hoisting machine is connected with the first connecting ring, a second hoisting machine is installed inside a third vehicle frame, and a wire rope on the second hoisting machine is connected with the second connecting ring. The combined type mountain internal clamp capable of being positioned quickly and accurately is effectively applicable to occasions with large gradients, good in reliability and capable of eliminating safety hazards.
Description
Technical field
The present invention relates to construction equipment in a kind of pipeline, especially a kind of internal clamp.
Background technology
Pneumatic internal clamp is to be used in the pipeline welding construction, and group is right rapidly to the pipe mouth of pipe to treat group to two from steel duct with radial load, and satisfies a kind of special-purpose machinery of pipeline welding requirement.It is driving and the operation that realizes equipment take compressed air as power source.Existing pipeline internal clamp can not walking when the gradient surpasses 30 °.When the upward trend walking, because the control mode of brake control valve and the interlocking of walking control valve causes the parking poor reliability, in addition, the slide slope occurs easily during descending, very large potential safety hazard is arranged.When the gradient was arranged, existing very difficult in pipeline opening adjustment position to mouthpart, efficient was low.
Summary of the invention
The deficiency that can not be applicable to the larger occasion of the gradient, poor reliability, have potential safety hazard in order to overcome existing pneumatic internal clamp, the invention provides a kind of effectively be applicable to the larger occasion of the gradient, reliability good, eliminate safe hidden trouble can quick pinpoint combined type mountain region internal clamp.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of can quick pinpoint combined type mountain region internal clamp, comprise upward slope safety guarantee car, to mouthpart main body, air accumulator and descending safety guarantee car; A described side to the mouthpart main body is installed the first connecting ring, and described opposite side to the mouthpart main body is connected with a side of air accumulator by hinge, and the opposite side of described air accumulator is provided with the second connecting ring; Wherein,
Described upward slope safety guarantee car comprises the first vehicle frame, the first driving wheel and pawl, arrange 3 the first driving wheels and 3 pawls on described the first vehicle frame, radial distribution is that 3 the first driving wheels and 3 pawls are all symmetrical about Y-axis, the first driving wheel is installed in an end of the first driving wheel support arm by a bearing pin, the middle part of described the first driving wheel support arm is installed in rotation on the first gyroaxis, described the first gyroaxis is fixedly mounted on the first vehicle frame, the other end of described the first driving wheel support arm connects with the first sliding sleeve by hinge, and described the first driving wheel is connected with the first drive unit; Described pawl is installed in connecting rod one end, the middle part of described connecting rod is installed in rotation on the second gyroaxis, described the second gyroaxis is fixedly mounted on the first vehicle frame, and the other end of described connecting rod is installed on the vehicle frame, mounting spring on the connecting rod between described the second gyroaxis and the first vehicle frame; Described the first sliding sleeve slidably is sleeved on the hollow shaft, and described hollow shaft is fixedly mounted on the vehicle frame, and described electric pushrod is positioned at hollow shaft, and the moved end of described electric pushrod and the interlock of described the first sliding sleeve; The first hoist engine is installed in described the first vehicle frame, and the cable wire on described the first hoist engine is connected with described the first connecting ring;
Described the mouthpart main body is comprised counterpart active section and walking section certainly, described certainly walking section comprises the second vehicle frame, road wheel, the second driving wheel and brake shoes, arrange successively 2 road wheels, the second driving wheel, brake shoes and 2 road wheels along the central axis direction of vehicle frame on described the second vehicle frame, be positioned at the lower semi-circular of the second vehicle frame from the axle road wheel that looks up, the second driving wheel and brake shoes are positioned at the upper semi-circle of the second vehicle frame; Radial distribution is that 2 road wheels are symmetrical about Y-axis, road wheel is installed on the second vehicle frame, the second driving wheel is installed in an end of the second driving wheel support arm by a bearing pin, the middle part of described the second driving wheel support arm is installed in rotation on the 3rd gyroaxis, described the 3rd gyroaxis is fixedly mounted on the second vehicle frame, the other end of described the second driving wheel support arm connects with the second sliding sleeve by hinge, and described the second driving wheel is connected with the second drive unit; Brake shoes is installed in an end of brake shoes support arm by a bearing pin, the middle part of described brake shoes support arm is installed in rotation on the 4th gyroaxis, described the 4th gyroaxis is fixedly mounted on the second vehicle frame, and the other end of described brake shoes support arm connects with the 3rd sliding sleeve by hinge; The described second and the 3rd sliding sleeve slidably is sleeved on the second central shaft, described second with the 3rd sliding sleeve be used for to promote second and the flexible telescoping mechanism of the 3rd sliding sleeve be connected; Described counterpart active section is fixedly connected with traveller, and described traveller is slidably mounted in the sleeve pipe, and described sliding sleeve is fixedly mounted on the side of the second vehicle frame, and described traveller is connected with the piston rod of cylinder;
Described descending safety guarantee car comprises the 3rd vehicle frame, the 3rd driving wheel and brake shoes, arrange 3 the 3rd driving wheels and 3 brake shoes on described the 3rd vehicle frame, radial distribution is that 3 the 3rd driving wheels and 3 brake shoes are all symmetrical about Y-axis, the 3rd driving wheel is installed in an end of the 3rd driving wheel support arm by a bearing pin, the middle part of described the 3rd driving wheel support arm is installed in rotation on the 5th gyroaxis, described the 5th gyroaxis is fixedly mounted on the 3rd vehicle frame, the other end of described the 3rd driving wheel support arm connects with the 4th sliding sleeve by hinge, and described the 3rd driving wheel is connected with the 3rd drive unit; Brake shoes is installed in an end of brake shoes support arm by a bearing pin, the middle part of described brake shoes support arm is installed in rotation on the 6th gyroaxis, described the 6th gyroaxis is fixedly mounted on the 3rd vehicle frame, and the other end of described brake shoes support arm connects with the 4th sliding sleeve by hinge; Described the 4th sliding sleeve slidably is sleeved on the hollow shaft, and described hollow shaft is fixedly mounted on the 3rd vehicle frame, and described electric pushrod is positioned at hollow shaft, and the moved end of described electric pushrod and the interlock of described the 3rd sliding sleeve; The second hoist engine is installed in described the 3rd vehicle frame, and the cable wire on described the second hoist engine is connected with described the second connecting ring.
Further, described the first, the 3rd drive unit is motor (stepper motor or servomotor), and described the second drive unit is the gas motor.
Further again, described telescoping mechanism comprises the first cylinder and the second cylinder, and two cylinders all are installed in mouthpart main stand axle center and are oppositely disposed in the central shaft two ends, and the first cylinder piston rod is connected with the second sliding sleeve; The second cylinder also is installed in the mouthpart frame central, and the second cylinder piston rod is connected with the 3rd sliding sleeve.
The circular arc compartment of terrains such as the outside of described air accumulator arrange three rollers.
Beneficial effect of the present invention is mainly manifested in: effectively be applicable to the larger occasion of the gradient, reliability good, eliminate safe hidden trouble, mouth of pipe place location efficiency is high, accurately.
Description of drawings
Fig. 1 be can quick pinpoint combined type mountain region internal clamp structure chart.
Fig. 2 is the structure chart of upward slope safety guarantee car.
Fig. 3 is the axial view of Fig. 2.
Fig. 4 is the structure chart to the mouthpart main body.
Fig. 5 is the axial view of Fig. 4.
Fig. 6 is the structure of gas storage tank figure.
Fig. 7 is the axial view of Fig. 6.
Fig. 8 is the structure chart of descending safety guarantee car.
Fig. 9 is the axial view of Fig. 8.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
With reference to Fig. 1～Fig. 9, a kind of can quick pinpoint combined type mountain region internal clamp, this combined type mountain region pipeline internal clamp is that 4 sections of ABCD are combined by code name, as shown in Figure 1, the A section is upward slope safety guarantee car, and the B section is to the mouthpart main body, and the C section is air accumulator, the D section is descending safety guarantee car, and the B section connects by hinge 38 with the C section.
The A section safety guarantee car of can walking to go up a slope voluntarily as shown in Figure 2, has cylinder cage type vehicle frame 1, the hollow shaft 2 that install at place, vehicle frame axle center, and there is slidable sliding sleeve 3 its outside, and transmission mechanism is arranged symmetrically with around hollow shaft.This car is by battery 4 power supplies, and controller 5 is controlled.The hoist engine 15 that servomotor 16 drives is installed in the car.
If when being fixed on electric pushrod 8 retraction on the central shaft, promote sliding sleeve 3 the wheel support arm is rotated, driving wheel is along with the motion of wheel support arm is pressed on the duct wall.When motor 14 rotates, drive by synchronous belt mechanism 15, thereby traction vehicle frame 1 is walked at pipeline internal.When electric pushrod 8 stretches out, sliding sleeve 3 is along with the pulling wheel support arm of returning of electric pushrod 8 makes driving wheel break away from duct wall.
The B section is to the mouthpart main body, as shown in Figure 4, is divided into the running part of counterpart operate portions 18 and back thereof from function, and the traveller 19 of connection is arranged on the counterpart operate portions, and sliding sleeve 20 is arranged on the running part, and two parts connect with sliding sleeve by traveller.From Z-direction, the three pairs of travellers with slide on the circumference uniform.Cylinder 23 promotes traveller 19 by connecting plate 22 can move relative to running part the counterpart operate portions.Has cylinder cage type vehicle frame 21 from running part, along arranging successively two caterpillar type tavelling wheels 24, two crawler type driving wheels 25, two brake shoes 26 and two caterpillar type tavelling wheels 24 on the Z-direction vehicle frame, radial distribution as shown in Figure 5, the angle of two road wheels is 120 ° and symmetrical about Y-axis, the angle of two driving wheels (two brake shoes) also is 120 ° and symmetrical about Y-axis, and the angle of driving wheel and road wheel is 60 °.4 road wheels are directly installed on the vehicle frame.Two driving wheels are installed in respectively an end of driving wheel support arm 31 by bearing pin, the driving wheel support arm can rotate around the gyroaxis that is fixed on the vehicle frame, and the other end of support arm connects with sliding sleeve 29 by hinge.Gas motor 32 is installed on the frame, on gas motor drive shaft, wheel support arm gyroaxis and the live axle sprocket wheel is installed, and by the chain transmission power is delivered on the driving wheel from the gas motor, and vehicle frame has been installed 2 cover driving wheel and support arms thereof.Two brake shoes are installed in respectively an end of brake shoes support arm 33 by bearing pin, the brake shoes support arm can rotate around the gyroaxis that is fixed on the vehicle frame, and the other end of brake shoes support arm connects with sliding sleeve 34 by hinge.
C section air accumulator 39 provides compressed air, roller 40 radial distribution above it as shown in Figure 7, each takes turns angle also is 120 ° and symmetrical about Y-axis.
The D section safety guarantee car of can going down hill voluntarily as shown in Figure 8, comprises being cylinder cage type frame 41 that there is hollow shaft 45 at the vehicle frame center, and there is slidable sliding sleeve 46 its outside, and transmission mechanism is arranged symmetrically with around hollow shaft.This car is by battery 43 power supplies, and controller 43 is controlled, and the hoist engine 55 that servomotor 56 drives is installed.
If when being fixed on electric pushrod 54 on the frame of center and stretching out to the right, promote sliding sleeve 46 the wheel support arm is rotated, driving wheel is along with the motion of wheel support arm is pressed on the duct wall, and makes brake shoes 48 break away from duct walls.When electric machine rotation 53, drive by synchronous belt mechanism 52, thereby traction vehicle frame 41 is walked at pipeline internal.When electric pushrod 54 is return, drive sliding sleeve 46 to left movement, pulling wheel support arm makes driving wheel break away from duct wall.If sliding sleeve continues to left movement, brake shoes stops walking device along with the motion of brake shoes support arm is pressed on the duct wall.
When each section combined, the hoist engine of A section upward slope safety guarantee car tightened up, and the A section abuts against with the B section; Two sections of BC are connected through the hinge; Hoist engine on the D section tightens up, and the D section abuts against with the C section.
When uphill gradient is larger, walk safely for ensureing whole engineering truck, the first step, the brake shoes 26 of C section is pressed on the duct wall, and whole engineering truck is stopped in the pipeline; Second step, upward slope safety guarantee car is forward walking independently, hoist engine 16 is put wirerope, three sections of BCD are motionless, when upward slope safety guarantee garage went to the pipeline end, connecting rod 11 stretched out pawl 10 outside the pipeline under the effect of spring force and keeps off on the ducting side edge, and approach switch 12 output control signals make upward slope safety guarantee car stop walking on the connecting rod 11 simultaneously, simultaneously, hoist engine 16 also stops to put wirerope; The 3rd step, three sections common upwards walkings of BCD, hoist engine 16 is received wirerope simultaneously.Because the fast self-locking device of similar car belt is arranged on the hoist engine 16, when occurring three sections of BCD to the trend that glides, the wirerope on the A section upward slope safety guarantee car can be with three sections pullings of back, thereby ensure that whole engineering truck can not be slipped to the pipeline depths.
When downward grades is larger, walk safely for ensureing whole engineering truck, second step, the brake shoes 48 of D section is pressed on the duct wall, and descending safety guarantee car is stopped in the pipeline; Second step, the B section is with the certainly walking of AC section, hoist engine 55 is put wirerope simultaneously, because the fast self-locking device of similar car belt is arranged on the hoist engine, when occurring three sections of ABC to the trend that glides, wirerope on the D section descending safety guarantee car can be with three sections pullings of front, thereby ensure that whole engineering truck can not be slipped to the pipeline depths.In the 3rd step, three sections walkings of ABC stop behind the pipeline opening target location, and the brake shoes 48 of D section descending safety guarantee car discharges, driving wheel 44 work walking downwards, and hoist engine 55 is received wirerope simultaneously.
During other situation, assembly can be not separated.
Claims (4)
- One kind can quick pinpoint combined type mountain region internal clamp, it is characterized in that: described combined type mountain region internal clamp comprises upward slope safety guarantee car, to mouthpart main body, air accumulator and descending safety guarantee car; A described side to the mouthpart main body is installed the first connecting ring, and described opposite side to the mouthpart main body is connected with a side of air accumulator by hinge, and the opposite side of described air accumulator is provided with the second connecting ring; Wherein,Described upward slope safety guarantee car comprises the first vehicle frame, the first driving wheel and pawl, arrange 3 the first driving wheels and 3 pawls on described the first vehicle frame, radial distribution is that 3 the first driving wheels and 3 pawls are all symmetrical about Y-axis, the first driving wheel is installed in an end of the first driving wheel support arm by a bearing pin, the middle part of described the first driving wheel support arm is installed in rotation on the first gyroaxis, described the first gyroaxis is fixedly mounted on the first vehicle frame, the other end of described the first driving wheel support arm connects with the first sliding sleeve by hinge, and described the first driving wheel is connected with the first drive unit; Described pawl is installed in connecting rod one end, the middle part of described connecting rod is installed in rotation on the second gyroaxis, described the second gyroaxis is fixedly mounted on the first vehicle frame, and the other end of described connecting rod is installed on the vehicle frame, mounting spring on the connecting rod between described the second gyroaxis and the first vehicle frame; Described the first sliding sleeve slidably is sleeved on the hollow shaft, and described hollow shaft is fixedly mounted on the vehicle frame, and described electric pushrod is positioned at hollow shaft, and the moved end of described electric pushrod and the interlock of described the first sliding sleeve; The first hoist engine is installed in described the first vehicle frame, and the cable wire on described the first hoist engine is connected with described the first connecting ring;Described the mouthpart main body is comprised counterpart active section and walking section certainly, described certainly walking section comprises the second vehicle frame, road wheel, the second driving wheel and brake shoes, arrange successively 2 road wheels, the second driving wheel, brake shoes and 2 road wheels along the central axis direction of vehicle frame on described the second vehicle frame, be positioned at the lower semi-circular of the second vehicle frame from the axle road wheel that looks up, the second driving wheel and brake shoes are positioned at the upper semi-circle of the second vehicle frame; Radial distribution is that 2 road wheels are symmetrical about Y-axis, road wheel is installed on the second vehicle frame, the second driving wheel is installed in an end of the second driving wheel support arm by a bearing pin, the middle part of described the second driving wheel support arm is installed in rotation on the 3rd gyroaxis, described the 3rd gyroaxis is fixedly mounted on the second vehicle frame, the other end of described the second driving wheel support arm connects with the second sliding sleeve by hinge, and described the second driving wheel is connected with the second drive unit; Brake shoes is installed in an end of brake shoes support arm by a bearing pin, the middle part of described brake shoes support arm is installed in rotation on the 4th gyroaxis, described the 4th gyroaxis is fixedly mounted on the second vehicle frame, and the other end of described brake shoes support arm connects with the 3rd sliding sleeve by hinge; The described second and the 3rd sliding sleeve slidably is sleeved on the second central shaft, described second with the 3rd sliding sleeve be used for to promote second and the flexible telescoping mechanism of the 3rd sliding sleeve be connected; Described counterpart active section is fixedly connected with traveller, and described traveller is slidably mounted in the sleeve pipe, and described sliding sleeve is fixedly mounted on the side of the second vehicle frame, and described traveller is connected with the piston rod of cylinder;Described descending safety guarantee car comprises the 3rd vehicle frame, the 3rd driving wheel and brake shoes, arrange 3 the 3rd driving wheels and 3 brake shoes on described the 3rd vehicle frame, radial distribution is that 3 the 3rd driving wheels and 3 brake shoes are all symmetrical about Y-axis, the 3rd driving wheel is installed in an end of the 3rd driving wheel support arm by a bearing pin, the middle part of described the 3rd driving wheel support arm is installed in rotation on the 5th gyroaxis, described the 5th gyroaxis is fixedly mounted on the 3rd vehicle frame, the other end of described the 3rd driving wheel support arm connects with the 4th sliding sleeve by hinge, and described the 3rd driving wheel is connected with the 3rd drive unit; Brake shoes is installed in an end of brake shoes support arm by a bearing pin, the middle part of described brake shoes support arm is installed in rotation on the 6th gyroaxis, described the 6th gyroaxis is fixedly mounted on the 3rd vehicle frame, and the other end of described brake shoes support arm connects with the 4th sliding sleeve by hinge; Described the 4th sliding sleeve slidably is sleeved on the hollow shaft, and described hollow shaft is fixedly mounted on the 3rd vehicle frame, and described electric pushrod is positioned at hollow shaft, and the moved end of described electric pushrod and the interlock of described the 3rd sliding sleeve; The second hoist engine is installed in described the 3rd vehicle frame, and the cable wire on described the second hoist engine is connected with described the second connecting ring.
- 2. as claimed in claim 1 can quick pinpoint combined type mountain region internal clamp, it is characterized in that: described the first, the 3rd drive unit is motor, and described the second drive unit is the gas motor.
- 3. as claimed in claim 1 or 2 can quick pinpoint combined type mountain region internal clamp, it is characterized in that: described telescoping mechanism comprises the first cylinder and the second cylinder, two cylinders all are installed in mouthpart main stand axle center and are oppositely disposed in the central shaft two ends, and the first cylinder piston rod is connected with the second sliding sleeve; The second cylinder also is installed in the mouthpart frame central, and the second cylinder piston rod is connected with the 3rd sliding sleeve.
- 4. as claimed in claim 1 or 2 can quick pinpoint combined type mountain region internal clamp, it is characterized in that: the circular arc compartment of terrains such as the outside of described air accumulator arrange three rollers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210259497.XA CN102848125B (en) | 2012-07-25 | 2012-07-25 | Combined type mountain internal clamp capable of being positioned quickly and accurately |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210259497.XA CN102848125B (en) | 2012-07-25 | 2012-07-25 | Combined type mountain internal clamp capable of being positioned quickly and accurately |
Publications (2)
| Publication Number | Publication Date |
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| CN102848125A true CN102848125A (en) | 2013-01-02 |
| CN102848125B CN102848125B (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210259497.XA Active CN102848125B (en) | 2012-07-25 | 2012-07-25 | Combined type mountain internal clamp capable of being positioned quickly and accurately |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105234621A (en) * | 2015-10-21 | 2016-01-13 | 中国石油天然气集团公司 | Intelligent control method for downhill speed of butt-joint device and butt-joint device |
| CN105537844A (en) * | 2015-09-28 | 2016-05-04 | 成都焕越科技有限责任公司 | Pipeline interior opening abutment machine |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3633813A (en) * | 1969-03-21 | 1972-01-11 | Work Way Corp | Internal pipe lineup clamp |
| US3644977A (en) * | 1969-12-03 | 1972-02-29 | L Travis Valentine | Apparatus for aligning the ends of adjoining lengths of pipe |
| US3920171A (en) * | 1974-02-01 | 1975-11-18 | Crc Crose Int Inc | Apparatus for positioning and clamping pipes for welding |
| US4463938A (en) * | 1982-03-29 | 1984-08-07 | Dearman Timothy Charles | Internal clamping of pipes |
| US5538173A (en) * | 1995-01-10 | 1996-07-23 | Hummel; Jon C. | Expandable tool for holding aligning pipes to be welded |
| CN2719507Y (en) * | 2004-04-07 | 2005-08-24 | 陈炯 | In-pipe robot |
| CN101480770A (en) * | 2008-04-01 | 2009-07-15 | 冯岩 | Hydraulic pipeline inner butt-jointing device |
| CN202825094U (en) * | 2012-07-25 | 2013-03-27 | 浙江工业大学 | Combined mountain internal clamp capable of positioning rapidly and accurately |
-
2012
- 2012-07-25 CN CN201210259497.XA patent/CN102848125B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3633813A (en) * | 1969-03-21 | 1972-01-11 | Work Way Corp | Internal pipe lineup clamp |
| US3644977A (en) * | 1969-12-03 | 1972-02-29 | L Travis Valentine | Apparatus for aligning the ends of adjoining lengths of pipe |
| US3920171A (en) * | 1974-02-01 | 1975-11-18 | Crc Crose Int Inc | Apparatus for positioning and clamping pipes for welding |
| US4463938A (en) * | 1982-03-29 | 1984-08-07 | Dearman Timothy Charles | Internal clamping of pipes |
| US5538173A (en) * | 1995-01-10 | 1996-07-23 | Hummel; Jon C. | Expandable tool for holding aligning pipes to be welded |
| CN2719507Y (en) * | 2004-04-07 | 2005-08-24 | 陈炯 | In-pipe robot |
| CN101480770A (en) * | 2008-04-01 | 2009-07-15 | 冯岩 | Hydraulic pipeline inner butt-jointing device |
| CN202825094U (en) * | 2012-07-25 | 2013-03-27 | 浙江工业大学 | Combined mountain internal clamp capable of positioning rapidly and accurately |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105537844A (en) * | 2015-09-28 | 2016-05-04 | 成都焕越科技有限责任公司 | Pipeline interior opening abutment machine |
| CN105234621A (en) * | 2015-10-21 | 2016-01-13 | 中国石油天然气集团公司 | Intelligent control method for downhill speed of butt-joint device and butt-joint device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102848125B (en) | 2014-12-03 |
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Effective date of registration: 20191226 Address after: 314400 in huangwan town government, Haining City, Jiaxing City, Zhejiang Province Patentee after: Haining huangwan town Asset Management Co.,Ltd. Address before: 510000 unit 2414-2416, building, No. five, No. 371, Tianhe District, Guangdong, China Patentee before: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Effective date of registration: 20191226 Address after: 510000 unit 2414-2416, building, No. five, No. 371, Tianhe District, Guangdong, China Patentee after: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Address before: Hangzhou City, Zhejiang province 310014 City Zhaohui District Six Patentee before: Zhejiang University of Technology |
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