CN102748054A - Hydraulic bracket pushing mechanism and hydraulic bracket - Google Patents
Hydraulic bracket pushing mechanism and hydraulic bracket Download PDFInfo
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- CN102748054A CN102748054A CN2012102281284A CN201210228128A CN102748054A CN 102748054 A CN102748054 A CN 102748054A CN 2012102281284 A CN2012102281284 A CN 2012102281284A CN 201210228128 A CN201210228128 A CN 201210228128A CN 102748054 A CN102748054 A CN 102748054A
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Abstract
The invention provides a hydraulic bracket pushing mechanism, which is used for pushing a hydraulic bracket. The hydraulic bracket pushing mechanism comprises a pedestal, a pushing oil cylinder, a pushing rod, a pedestal gap bridge and a pedestal lifting device, wherein one end of the pushing oil cylinder is connected with the pedestal; one end of the pushing rod is connected with the pushing oil cylinder in a matching way; the pedestal gap bridge is arranged on the pedestal; one end of the pedestal lifting device is rotatablely connected with the pushing oil cylinder, and the other end of the pedestal lifting device is rotatablely connected with the pedestal; when the hydraulic bracket works, the pedestal lifting device is slantwise arranged on the pedestal gap bridge; when the hydraulic bracket is pushed, the pedestal lifting device is driven by the pushing oil cylinder to erect and the pedestal is lifted by the pedestal lifting device. The invention also provides the hydraulic bracket. According to the technical scheme provided by the invention, the pedestal lifting oil cylinder can be slantwise arranged and automatically lifted to perform pedestal lifting operation through a triangular pedestal lifting connecting rod, the structure is simple, the occupied space is small, and the problem of difficulty in pushing of the hydraulic bracket of thin coal seam is solved.
Description
Technical field
The present invention relates to the machinery equipment in coal mining field, more specifically, relate to a kind of hydraulic support thrust gear and hydraulic support.
Background technology
At present, China combines the technology of adopting and reaches its maturity aspect the thinner seam exploitation.But for fully mechanized mining supporter, because row's coal space is little, run into base plate than weak seam, base plate shale rock stratum fills up base easily, causes moving difficulty, increases the workload that the workman clears up coal slime.
The medium-thickness seam hydraulic support can solve through setting up bottom raising mechanism easily, but for Bracket in Thin Coal Seam, because spatial constraints can't be provided with traditional bottom lifting device.
China has verified the coal reserves girdle and has accounted for more than 46%, and thin seam mining plays an important role for keeping coal production to satisfy the national economic development.
Therefore, hydraulic support for low coal seam causes coal slime to stop up the middle-grade and moving difficulty of base because of bottom lifting device can't be set, and becomes those skilled in the art's problem demanding prompt solution.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of hydraulic support thrust gear, can realize lifting the end and passing operation of hydraulic support for low coal seam, it is little to take up room.In addition, the present invention also provides a kind of hydraulic support.
In view of this, the invention provides a kind of hydraulic support thrust gear, be used to pass hydraulic support, comprise base, passing oil cylinder, pusher rod, base gap bridge and bottom lifting device, an end of said passing oil cylinder is connected with said base; One end of said pusher rod and said passing oil cylinder are connected; Said base is passed a bridge and is installed on the said base; One end of said bottom lifting device and said passing oil cylinder are rotationally connected, and the other end of said bottom lifting device and said base are rotationally connected; When said hydraulic support was worked, said bottom lifting device tilted to be positioned on the said base gap bridge; When passing said hydraulic support, the said bottom lifting device of said passing hydraulic oil cylinder driving is to vertically, and said bottom lifting device lifts said base.
Technical scheme provided by the invention, hydraulic support is not when moving, and bottom lifting device tiltedly rides on the gap bridge of base, and it is little to take up room; When passing hydraulic support, pusher rod is stretched out, and bottom lifting device rises automatically; Hydraulic support foundation is lifted; Can successfully realize moving frame, solve existing hydraulic support for low coal seam, cause coal slime to stop up the middle-grade problem with moving difficulty of base because of bottom lifting device can't be set.This bottom lifting device is simple in structure, is convenient to processing and manufacturing and installation.
In technique scheme, preferably, said bottom lifting device comprises to be lifted end connecting rod and lifts end oil cylinder, and said base is provided with lifts lower supporter, and a said end of lifting end oil cylinder is installed in said lifting on the end connecting rod; A said end and the said passing oil cylinder of lifting end connecting rod is rotationally connected; The said other end and the said base of lifting end connecting rod is rotationally connected; The said other end of lifting end oil cylinder matches with the said lower supporter of lifting.
Lift end connecting rod and play the effect of lifting end oil cylinder of supporting, can also will lift end oil cylinder through the passing oil cylinder simultaneously and rise automatically, the convenient hydraulic support of passing; Lifting lower supporter can make base be lifted with the force transmission of lifting end oil cylinder to base, reduces the workload that the workman clears up coal slime, reduces labor strength, conveniently moves frame, enhances productivity.
In technique scheme, preferably, the said end connecting rod structure triangular in shape of lifting, each place, angle of said triangular structure is provided with first installing hole, second installing hole and the 3rd installing hole respectively.
Like this; Installing hole is conveniently lifted end connecting rod and is passed oil cylinder, lifts being rotationally connected of end oil cylinder, base; The also suitable and linkage that can transfer of triangular structure can be transformed into the power of horizontal direction the power of vertical direction, thereby realize lifting automatically the function at the end simultaneously.
In technique scheme; Preferably; The said end connecting rod of lifting comprises: con-rod only, gasket ring, clamping plate, pasting board and otic placode, said gasket ring are arranged at an end of said con-rod only, and said gasket ring is rotationally connected through said first installing hole and a said end of lifting end oil cylinder; Said clamping plate, pasting board and said otic placode are installed on the other end of said con-rod only, and an end of said clamping plate is connected with said pasting board, and the side of said pasting board is provided with said otic placode, and said otic placode is rotationally connected through the inner reinforced plate of second installing hole and said base; The 3rd end of said con-rod only is rotationally connected through said the 3rd installing hole and said passing oil cylinder.
Like this, the structure design of lifting end connecting rod is more reasonable, and intensity is high, can satisfy connection request.
In technique scheme, preferably, the said lower supporter of lifting comprises: cover plate, ear seat and key seat, and said cover plate is fixedly connected with said base; Said ear seat is fixedly mounted on the said cover plate; Said key seat is fixedly mounted on the said ear seat; Said key seat is provided with the pin-and-hole that matches with said ear seat.
Like this, can well the power of lifting end oil cylinder be passed to base, realize lifting the function at the end, simultaneously simple in structure, to be convenient to make and install, structural strength is high.
In technique scheme, preferably, said cover plate is provided with horizontal U type groove, and said ear seat is provided with vertical U type groove.
Laterally U type groove can conveniently be lifted end oil cylinder and lift the cooperation between the lower supporter, avoids lifting end oil cylinder and bumps when lower supporter cooperates and interfere with lifting, and reduces fault rate, guarantees that the safety of lifting end operation carries out smoothly.
In technique scheme; Preferably; Said passing oil cylinder comprises to be lifted end cylinder barrel and is arranged at said lifting and lifts end piston rod in the end cylinder barrel, and a said end of lifting end cylinder barrel matches with said ear seat, and a said end and the said end connecting rod of lifting of lifting end piston rod is rotationally connected.
Like this, be convenient to pass the installation of oil cylinder on hydraulic support, will lift end cylinder barrel simultaneously and be installed in upside and outside, also be convenient to carry out checking maintenance, can in time find the trouble point, improve maintenance efficiency, guarantee to pass and lift carrying out smoothly of end operation lifting end cylinder barrel.
In technique scheme, preferably, the said end cylinder barrel of lifting is provided with latch, and said latch is installed in said vertical U type groove, and fixes through lock pin.
Like this, can realize lifting end cylinder barrel easily and lift being connected of lower supporter, easy for installation, power transmission is effective, and is simultaneously simple in structure, reduces and makes and installation cost.
In technique scheme; Preferably; The said end oil cylinder of lifting comprises and lifts end cylinder barrel and be arranged at said lifting and lift end piston rod in the end cylinder barrel that a said end of lifting end piston rod matches with said ear seat, and a said end and the said end connecting rod of lifting of lifting end cylinder barrel is rotationally connected.
This structure can realize lifting the effect at the end equally, and easy for installation, and fault rate is low.
In addition, the present invention also provides a kind of hydraulic support, comprises above-mentioned hydraulic support thrust gear.
The technique scheme that the present invention proposes has following beneficial effect:
Hydraulic support is not when moving, and bottom lifting device tiltedly rides on the gap bridge of base, and it is little to take up room; When passing hydraulic support, pusher rod is stretched out, and bottom lifting device rises automatically; Hydraulic support foundation is lifted; Can successfully realize moving frame, solve existing hydraulic support for low coal seam, cause coal slime to stop up the middle-grade problem with moving difficulty of base because of bottom lifting device can't be set; Through the setting that a triangle is lifted end connecting rod, just accomplish turning to of force direction; Simple in structure, low cost of manufacture can effectively reduce production costs.
Description of drawings
Fig. 1 is the structural representation according to hydraulic support thrust gear one embodiment according to the invention;
Fig. 2 is the schematic top plan view of structure shown in Figure 1;
Fig. 3 is a structural representation of lifting lower supporter in the structure shown in Figure 1;
Fig. 4 is a structural representation of lifting end connecting rod in the structure shown in Figure 1.
Wherein, the corresponding relation between Reference numeral and the component names is among Fig. 1 to Fig. 4:
1 base 2 is passed oil cylinders 4 bases 5 pusher rod of passing a bridge
31 lift end connecting rod 310 con-rod onlys 311 gasket rings 312 clamping plate
313 pasting boards, 314 otic placodes
32 lift lower supporter 320 second installing holes 321 cover plates 322 ear seats
323 key seats, 3211 horizontal U type groove 3221 vertical U type grooves
33 lift end oil 331 lifts end cylinder barrel 332 and lifts end piston rod
330 the 3rd installing holes, 340 first installing holes
The specific embodiment
In order to make those skilled in the art understand technical scheme of the present invention better, the present invention is further specified below in conjunction with accompanying drawing and embodiment.Need to prove that under the situation of not conflicting, the application's embodiment and the characteristic among the embodiment can make up each other.
A lot of details have been set forth in the following description so that make much of the present invention; But; The present invention can also adopt and be different from other modes described here and implement, and therefore, protection scope of the present invention does not receive the restriction of following disclosed specific embodiment.
To shown in Figure 4, the invention provides a kind of hydraulic support thrust gear like Fig. 1, be used to pass hydraulic support, comprise base 1, passing oil cylinder 2, pusher rod 5, base gap bridge 4 and bottom lifting device, an end of said passing oil cylinder 2 is connected with said base 1; One end of said pusher rod 5 and said passing oil cylinder 2 are connected; Said base gap bridge 4 is installed on the said base 1; One end of said bottom lifting device and said passing oil cylinder 2 are rotationally connected, and the other end of said bottom lifting device and said base 1 are rotationally connected; When said hydraulic support was worked, said bottom lifting device tilted to be positioned on the said base gap bridge 4; When passing said hydraulic support, said passing oil cylinder 2 drives said bottom lifting device to vertically, and said bottom lifting device lifts said base 1.
Technical scheme provided by the invention, hydraulic support is not when moving, and bottom lifting device tiltedly rides on the gap bridge of base, and it is little to take up room; When passing hydraulic support, pusher rod is stretched out, and bottom lifting device rises automatically; Hydraulic support foundation is lifted; Can successfully realize moving frame, solve existing hydraulic support for low coal seam, cause coal slime to stop up the middle-grade problem with moving difficulty of base because of bottom lifting device can't be set.This bottom lifting device is simple in structure, is convenient to processing and manufacturing and installation.
Preferably, in the present embodiment, said bottom lifting device comprises to be lifted end connecting rod 31 and lifts end oil cylinder 33, and said base 1 is provided with lifts lower supporter 32, and a said end of lifting end oil cylinder 33 is installed in said lifting on the end connecting rod 31; A said end and the said passing oil cylinder 2 of lifting end connecting rod 31 is rotationally connected; The said other end and the said base 1 of lifting end connecting rod 31 is rotationally connected; The said other end of lifting end oil cylinder 33 matches with the said lower supporter 32 of lifting.
Lift end connecting rod and play the effect of lifting end oil cylinder of supporting, can also will lift end oil cylinder through the passing oil cylinder simultaneously and rise automatically, the convenient hydraulic support of passing; Lifting lower supporter can make base be lifted with the force transmission of lifting end oil cylinder to base, reduces the workload that the workman clears up coal slime, reduces labor strength, conveniently moves frame, enhances productivity.
In the present embodiment, a said end and the said passing oil cylinder 2 of lifting end connecting rod 31 is rotationally connected; The said other end and the said base 1 of lifting end connecting rod 31 is rotationally connected; The said other end of lifting end oil cylinder 33 matches with the said lower supporter 32 of lifting.
Like this, just be equivalent to the linkage that can transfer with lifting end connecting rod, can utilize the power of the horizontal movement of passing oil cylinder, will lift end oil cylinder and prop up, that carries out vertical direction lifts end action, design ingenious, conserve space.
As shown in Figure 4, said end connecting rod 31 structures triangular in shape of lifting, the place, each angle of said triangular structure is provided with first installing hole 340, second installing hole 320 and the 3rd installing hole 330 respectively.
Like this; Installing hole is conveniently lifted end connecting rod and is passed oil cylinder, lifts being rotationally connected of end oil cylinder, base; The also suitable and linkage that can transfer of triangular structure can be transformed into the power of horizontal direction the power of vertical direction, thereby realize lifting automatically the function at the end simultaneously.
Preferably; The said end connecting rod 31 of lifting comprises: con-rod only 310, gasket ring 311, clamping plate 312, pasting board 313 and otic placode 314; Said gasket ring 311 is arranged at an end of said con-rod only 310, and said gasket ring 311 is rotationally connected with a said end of lifting end oil cylinder 33 through said first installing hole 340; Said clamping plate 312, pasting board 313 and said otic placode 314 are installed on the other end of said con-rod only 310; One end of said clamping plate 312 is connected with said pasting board 313; The side of said pasting board 313 is provided with said otic placode 314, and said otic placode 314 is rotationally connected through the inner reinforced plate of second installing hole 320 with said base 1; The 3rd end of said con-rod only 310 is rotationally connected with said passing oil cylinder 2 through said the 3rd installing hole 330.
Like this, the structure design of lifting end connecting rod is more reasonable, and intensity is high, can satisfy connection request.
As shown in Figure 3, the said lower supporter 32 of lifting comprises: cover plate 321, ear seat 322 and key seat 323, and said cover plate 321 is fixedly connected with said base 1; Said ear seat 322 is fixedly mounted on the said cover plate 321; Said key seat 323 is fixedly mounted on the said ear seat 322; Said key seat 323 is provided with the pin-and-hole that matches with said ear seat 322.
Like this, can well the power of lifting end oil cylinder be passed to base, realize lifting the function at the end, simultaneously simple in structure, to be convenient to make and install, structural strength is high.
Further, said cover plate 321 is provided with horizontal U type groove 3211, and said ear seat 322 is provided with vertical U type groove 3221.
Laterally U type groove can conveniently be lifted end oil cylinder and lift the cooperation between the lower supporter, avoids lifting end oil cylinder and bumps when lower supporter cooperates and interfere with lifting, and reduces fault rate, guarantees that the safety of lifting end operation carries out smoothly.
In the present embodiment; Said passing oil cylinder 33 comprises to be lifted end cylinder barrel 331 and is arranged at said lifting and lifts end piston rod 332 in the end cylinder barrel 331; A said end of lifting end cylinder barrel 331 matches with said ear seat 322, and a said end and the said end connecting rod 31 of lifting of lifting end piston rod 332 is rotationally connected.
Like this, be convenient to pass the installation of oil cylinder on hydraulic support, will lift end cylinder barrel simultaneously and be installed in upside and outside, also be convenient to carry out checking maintenance, can in time find the trouble point, improve maintenance efficiency, guarantee to pass and lift carrying out smoothly of end operation lifting end cylinder barrel.
The said end cylinder barrel 331 of lifting is provided with latch, and said latch is installed in said vertical U type groove 3221, and fixes through lock pin.
Like this, can realize lifting end cylinder barrel easily and lift being connected of lower supporter, easy for installation, power transmission is effective, and is simultaneously simple in structure, reduces and makes and installation cost.
Certainly; Can also be: the said end oil cylinder 33 of lifting comprises and lifts end cylinder barrel 331 and be arranged at said lifting and lift end piston rod 332 in the end cylinder barrel 331; A said end of lifting end piston rod 332 matches with said ear seat 322, and a said end and the said end connecting rod 31 of lifting of lifting end cylinder barrel 331 is rotationally connected.
This structure can realize lifting the effect at the end equally, and easy for installation, and fault rate is low.
The operating principle of hydraulic support thrust gear of the present invention is following:
The front end of pusher rod 5 links to each other with the scraper plate machine, and the rear end is connected with the passing oil cylinder 2 of hydraulic support, passes oil cylinder 2 and is connected with an end of lifting end connecting rod 31, the other end of lifting end connecting rod 31 with lift end oil cylinder and link to each other.
Hydraulic support is when moving frame, and hydraulic support is fixed, and the passing oil cylinder 2 of hydraulic support promotes pusher rod 5 earlier and stretches out forward, and 5 of pusher rod promote the scraper plate machine and travel forward.
After the scraper plate machine moved into place, the scraper plate machine was fixed, the hydraulic jack oil-feed of pusher rod 5, and it is mobile together with the base 1 of hydraulic support to pass oil cylinder 2; When moving; Owing to pass oil cylinder 2 and lift end connecting rod 31 and link to each other; Begin to do divertical motion thereby lift end connecting rod 31, lift end oil cylinder and also become vertical state by heeling condition, lift end oil cylinder and just can also bring into play the effect of lifting the end because lifting turning to of end connecting rod 31; Lift more convenient and quicker when support is moved to support, reduced the manually-operated time.
In addition, the present invention also provides a kind of hydraulic support, comprises the hydraulic support thrust gear in the foregoing description.
The technical scheme that the present invention proposes has following beneficial effect:
Hydraulic support is not when moving, and bottom lifting device tiltedly rides on the gap bridge of base, and it is little to take up room; When passing hydraulic support, pusher rod is stretched out, and bottom lifting device rises automatically; Hydraulic support foundation is lifted; Can successfully realize moving frame, solve existing hydraulic support for low coal seam, cause coal slime to stop up the middle-grade problem with moving difficulty of base because of bottom lifting device can't be set; Through the setting that a triangle is lifted end connecting rod, just accomplish turning to of force direction; Simple in structure, low cost of manufacture can effectively reduce production costs.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a hydraulic support thrust gear is used to pass hydraulic support, it is characterized in that, comprises base (1), passing oil cylinder (2), pusher rod (5), base gap bridge (4) and bottom lifting device,
One end of said passing oil cylinder (2) is connected with said base (1);
One end of said pusher rod (5) and said passing oil cylinder (2) are connected;
Said base gap bridge (4) is installed on the said base (1);
One end of said bottom lifting device and said passing oil cylinder (2) are rotationally connected, and the other end of said bottom lifting device and said base (1) are rotationally connected;
When said hydraulic support was worked, said bottom lifting device tilted to be positioned on the said base gap bridge (4);
When passing said hydraulic support, said passing oil cylinder (2) drives said bottom lifting device to vertically, and said bottom lifting device lifts said base (1).
2. hydraulic support thrust gear according to claim 1 is characterized in that, said bottom lifting device comprises to be lifted end connecting rod (31) and lift end oil cylinder (33), and said base (1) is provided with lifts lower supporter (32),
A said end of lifting end oil cylinder (33) is installed in said lifting on the end connecting rod (31);
A said end and the said passing oil cylinder (2) of lifting end connecting rod (31) is rotationally connected;
The said other end and the said base (1) of lifting end connecting rod (31) is rotationally connected;
The said other end of lifting end oil cylinder (33) matches with the said lower supporter (32) of lifting.
3. hydraulic support thrust gear according to claim 2; It is characterized in that; Said end connecting rod (31) structure triangular in shape of lifting, each place, angle of said triangular structure is provided with first installing hole (340), second installing hole (320) and the 3rd installing hole (330) respectively.
4. hydraulic support thrust gear according to claim 3 is characterized in that, the said end connecting rod (31) of lifting comprising: con-rod only (310), gasket ring (311), clamping plate (312), pasting board (313) and otic placode (314),
Said gasket ring (311) is arranged at an end of said con-rod only (310), and said gasket ring (311) is rotationally connected through said first installing hole (340) and a said end of lifting end oil cylinder (33);
Said clamping plate (312), pasting board (313) and said otic placode (314) are installed on the other end of said con-rod only (310); One end of said clamping plate (312) is connected with said pasting board (313); The side of said pasting board (313) is provided with said otic placode (314), and said otic placode (314) is rotationally connected through the inner reinforced plate of second installing hole (320) with said base (1);
The 3rd end of said con-rod only (310) is rotationally connected through said the 3rd installing hole (330) and said passing oil cylinder (2).
5. hydraulic support thrust gear according to claim 4 is characterized in that, the said lower supporter (32) of lifting comprising: cover plate (321), ear seat (322) and key seat (323),
Said cover plate (321) is fixedly connected with said base (1);
Said ear seat (322) is fixedly mounted on the said cover plate (321);
Said key seat (323) is fixedly mounted on the said ear seat (322);
Said key seat (323) is provided with the pin-and-hole that matches with said ear seat (322).
6. hydraulic support thrust gear according to claim 5 is characterized in that, said cover plate (321) is provided with horizontal U type groove (3211), and said ear seat (322) is provided with vertical U type groove (3221).
7. hydraulic support thrust gear according to claim 6; It is characterized in that; Said passing oil cylinder (33) comprises lifting end cylinder barrel (331) and being arranged at said lifting lifts end piston rod (332) in the end cylinder barrel (331); A said end of lifting end cylinder barrel (331) matches with said ear seat (322), and a said end and the said end connecting rod (31) of lifting of lifting end piston rod (332) is rotationally connected.
8. hydraulic support thrust gear according to claim 7 is characterized in that, the said end cylinder barrel (331) of lifting is provided with latch, and said latch is installed in said vertical U type groove (3221), and fixes through lock pin.
9. hydraulic support thrust gear according to claim 6; It is characterized in that; The said end oil cylinder (33) of lifting comprises lifting end cylinder barrel (331) and being arranged at said lifting and lifts end piston rod (332) in the end cylinder barrel (331); A said end of lifting end piston rod (332) matches with said ear seat (322), and a said end and the said end connecting rod (31) of lifting of lifting end cylinder barrel (331) is rotationally connected.
10. a hydraulic support is characterized in that, comprises like each described hydraulic support thrust gear in the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210228128.4A CN102748054B (en) | 2012-07-03 | 2012-07-03 | Hydraulic bracket pushing mechanism and hydraulic bracket |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210228128.4A CN102748054B (en) | 2012-07-03 | 2012-07-03 | Hydraulic bracket pushing mechanism and hydraulic bracket |
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| CN102748054A true CN102748054A (en) | 2012-10-24 |
| CN102748054B CN102748054B (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210228128.4A Active CN102748054B (en) | 2012-07-03 | 2012-07-03 | Hydraulic bracket pushing mechanism and hydraulic bracket |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410547A (en) * | 2013-08-29 | 2013-11-27 | 郑州煤矿机械集团股份有限公司 | Thin seam hydraulic support for coal mines |
| CN107879287A (en) * | 2017-11-18 | 2018-04-06 | 山西浩业通用设备有限公司 | A kind of underground moving hydraulic support to supporting point device |
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| CN103410547B (en) * | 2013-08-29 | 2016-08-10 | 郑州煤矿机械集团股份有限公司 | Thin seam hydraulic support for coal mines |
| CN107879287A (en) * | 2017-11-18 | 2018-04-06 | 山西浩业通用设备有限公司 | A kind of underground moving hydraulic support to supporting point device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102748054B (en) | 2014-08-13 |
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Effective date of registration: 20170111 Address after: 413000 Yiyang high tech Zone in the eastern part of the New District of integrated services building, room 512, Hunan Patentee after: Yiyang science and Technology Achievement Transformation Service Center Patentee after: Sany Heavy Equipment Co.,Ltd. Address before: Yansai Lake Street 110027 economic and Technological Development Zone Liaoning city Shenyang province No. 31 Patentee before: Sany Heavy Equipment Co.,Ltd. |