CN115284167A - Bearing box base frame grinding nonstandard equipment and using method thereof - Google Patents
Bearing box base frame grinding nonstandard equipment and using method thereof Download PDFInfo
- Publication number
- CN115284167A CN115284167A CN202210664724.0A CN202210664724A CN115284167A CN 115284167 A CN115284167 A CN 115284167A CN 202210664724 A CN202210664724 A CN 202210664724A CN 115284167 A CN115284167 A CN 115284167A
- Authority
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- China
- Prior art keywords
- transverse
- lead screw
- base frame
- bearing box
- oil pump
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- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000010720 hydraulic oil Substances 0.000 claims description 32
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 4
- 238000005553 drilling Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/27—Work carriers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/34—Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/02—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables
- B24B47/04—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables by mechanical gearing only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/22—Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
The invention relates to the field of grinding of bearing box base frames, in particular to a bearing box base frame grinding nonstandard device and a using method thereof, aiming at solving the problems that more than two workers are needed to cooperate when one bearing box base frame is ground by manpower, the consumed time is long, and the occupied time of a crane is long.
Description
Technical Field
The invention relates to the field of grinding of bearing box base frames, in particular to non-standard grinding equipment for a bearing box base frame and a using method thereof.
Background
The bearing box body needs to support the rotor of the key part of the steam turbine, the installation requirement is high, the contact area of the contact surface of the box body and the base frame is required to be more than 75% during processing, the contact is uniform, and the spots in the range of 25 multiplied by 25 reach 3-5 points. The requirement cannot be met by means of machining, in order to meet the contact requirement in a factory at the present stage, the bottom surface of the bearing box faces upwards to be in counterpoint grinding with the base frame, the counterpoint grinding is mainly realized by pushing the base frame by a worker, the base frame is large in size and heavy in weight, and even under the necessary assistance of a crane, the labor intensity of the worker is also high. And rely on the manual work to grind a bearing box base frame and need two above workman cooperations, consuming time for a long time, it is also longer to occupy the crane time.
Disclosure of Invention
The invention discloses the following purposes: the invention provides non-standard grinding equipment for a bearing box base frame and a using method thereof, aiming at solving the problems that more than two workers are needed to cooperate to grind one bearing box base frame manually, the consumed time is long, and the occupied time of a crane is long.
The invention is realized by the following scheme:
a bearing box base frame grinding nonstandard equipment comprises a feeding mechanism, a clamp, a hydraulic oil pump, a hydraulic pump station, a connecting disc and a magnetic sucker;
the clamp is arranged on the feeding mechanism, the hydraulic oil pump is fixed in the clamp, the front part of the hydraulic oil pump is connected with the connecting disc, and the connecting disc is connected with the magnetic sucker.
Further, the hydraulic oil pump is detachably connected with the clamp.
Still further, the feeding mechanism comprises a base station, a longitudinal slide rod, a longitudinal lead screw, a transverse slide rail and a transverse lead screw;
the vertical fixing of vertical litter is on the base station, and vertical lead screw is vertical to be fixed at the lateral part of vertical litter, and vertical lead screw and vertical litter interval set up, horizontal slide rail and vertical litter sliding connection, and horizontal slide rail and vertical lead screw threaded connection, horizontal lead screw sets up on horizontal slide rail, and is equipped with vertical motor and horizontal motor on the horizontal slide rail, vertical motor passes through gear and vertical lead screw connection, and vertical motor control horizontal slide rail reciprocates along vertical lead screw, and horizontal motor control horizontal lead screw rotates.
Furthermore, the clamp is connected with the transverse sliding rail in a sliding mode, and the clamp is connected with the transverse lead screw in a threaded mode.
A use method of a bearing box base frame grinding nonstandard equipment comprises the following steps:
the method comprises the following steps: placing the bottom surface of the bearing box upwards on a workbench and fixing;
step two: placing the base platform on the workbench and fixing;
step three: hoisting the base frame onto the bearing box to make the lapping plane of the base frame coincide with the lapping plane of the bearing box;
step four: starting a longitudinal motor, and driving a longitudinal lead screw to enable a transverse slide rail to longitudinally move on a longitudinal slide rod until the height of the magnetic suction cup is consistent with that of the base frame;
step five: starting a transverse motor, and driving a clamp hoop to transversely move on a transverse guide rail by a transverse lead screw until the magnetic suction disc is attached to the plane of the side surface of the base frame;
step six: starting the magnetic sucker to suck the base frame by the magnetic sucker;
step seven: starting a hydraulic pump station matched with the hydraulic oil pump, and adjusting parameters of the hydraulic pump station to control the round-trip speed and the stroke of the hydraulic oil pump;
step eight: and starting the automatic reversing function of the hydraulic oil pump to realize the reciprocating grinding work of the base frame on the bearing box.
Has the advantages that:
the nonstandard equipment and the using method have the advantages that the nonstandard equipment and the using method can be used for grinding the bearing box and the base frame, not only can meet the contact requirements of drawings on the planes of the bearing box and the base frame, but also can liberate the productivity of workers, improve the production efficiency and release the capacity of a crane. The method can be used for popularizing the grinding and processing procedures of similar products in the future.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of a bearing housing pedestal grinding nonstandard equipment of the present invention;
FIG. 2 is a top view of FIG. 1;
fig. 3 is a left side view of fig. 1.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
For the convenience of understanding the embodiments of the present invention, the following description will be further explained by taking several specific embodiments as examples in conjunction with the drawings, and the embodiments are not to be construed as limiting the embodiments of the present invention.
This embodiment is described with reference to fig. 1 to 3:
the first embodiment is as follows: a bearing box base frame grinding nonstandard equipment comprises a feeding mechanism 1, a clamp 2, a hydraulic oil pump 3-1, a hydraulic pump station 3-2, a connecting disc 4 and a magnetic sucker 5;
the clamping hoop 2 is arranged on the feeding mechanism 1, the hydraulic oil pump 3-1 is fixed in the clamping hoop 2, the front part of the hydraulic oil pump 3-1 is connected with the connecting disc 4, and the connecting disc 4 is connected with the magnetic sucking disc 5.
In the present embodiment: the feeding mechanism adopts a radial drilling machine without a drill bit and a drill bit bracket, taking the invention as an example, the ZJA3725 multiplied by 8/1 movable universal radial drilling machine is adopted, the clamp is arranged on the feeding mechanism, the hydraulic oil pump is clamped by the clamp, the hydraulic oil pump is controlled by a hydraulic pump station, the switching of the feeding direction of the hydraulic oil pump can be automatically or manually realized, the hydraulic pressure can be adjusted by adjustment,
the ZJA 3725/1 mobile universal radial drilling machine is modified, and four sets of tool accessories, namely a set of hydraulic oil pump, a magnetic suction cup, a set of clamp and a set of connecting disc, are added. The four sets of tool accessories are matched for use, and the grinding work of the bearing box and the base frame can be realized.
The hydraulic oil pump is used for realizing the reciprocating motion of the pushing base frame. The reciprocating stroke of the hydraulic oil pump is adjustable, the grinding requirement of the base frame is met, the matching pump station of the hydraulic oil pump can automatically or manually realize the switching of the feeding direction of the hydraulic oil pump, and the reciprocating speed of the hydraulic oil pump can be adjusted through adjustment.
The magnetic sucker is connected to the hydraulic oil pump through the connecting disc, and the magnetic sucker can be opened to suck the base frame by adjusting the position of the handle during working. The magnetic force sucking disc is the permanent magnetism sucking disc form, and the biggest pulling force that takes off satisfies the requirement that promotes the bed frame, and the functionality can be guaranteed. The rate at which the oil pump reciprocates.
The second embodiment is as follows: the utility model provides a bearing box bed frame grinds nonstandard equipment, hydraulic oil pump 3-1 and clip 2 can dismantle the connection.
Other embodiments are the same as the first embodiment.
The third concrete implementation mode: a bearing box base frame grinding nonstandard equipment is disclosed, wherein a feeding mechanism 1 comprises a base 1-1, a longitudinal slide rod 1-2, a longitudinal lead screw 1-3, a transverse slide rail 1-4 and a transverse lead screw 1-5;
the longitudinal sliding rod 1-2 is vertically fixed on the base platform 1-1, the longitudinal lead screw 1-3 is vertically fixed on the side portion of the longitudinal sliding rod 1-2, the longitudinal lead screw 1-3 and the longitudinal sliding rod 1-2 are arranged at intervals, the transverse slide rail 1-4 is connected with the longitudinal sliding rod 1-2 in a sliding mode, the transverse slide rail 1-4 is connected with the longitudinal lead screw 1-3 in a threaded mode, the transverse lead screw 1-5 is arranged on the transverse slide rail 1-4, the transverse slide rail 1-4 is provided with a longitudinal motor and a transverse motor, the longitudinal motor is connected with the longitudinal lead screw 1-3 through a gear, the longitudinal motor controls the transverse slide rail 1-4 to move up and down along the longitudinal lead screw 1-3, and the transverse motor controls the transverse lead screw 1-5 to rotate.
In the present embodiment:
other embodiments are the same as the first embodiment.
The fourth concrete implementation mode: a bearing box base frame grinding nonstandard device is characterized in that a clamping hoop 2 is connected with transverse sliding rails 1-4 in a sliding mode, and the clamping hoop 2 is connected with transverse lead screws 1-5 in a threaded mode.
In the present embodiment: the clamp is arranged on the transverse sliding rail and used for fixing the hydraulic oil pump, and the X-axis position can be adjusted by means of the original transverse screw rod of the movable rocker drill.
Other embodiments are the same as the third embodiment.
The fifth concrete implementation mode: a use method of a bearing box base frame grinding nonstandard equipment comprises the following steps:
the method comprises the following steps: the bottom surface of the bearing box 7 is upward, and the bearing box is placed on a workbench 8 and fixed;
step two: placing the base station 1-1 on the workbench 8 and fixing;
step three: hoisting the base frame 6 to the bearing box 7 to ensure that the lapping plane of the base frame 6 is superposed with the lapping plane of the bearing box 7;
step four: starting a longitudinal motor, and driving a longitudinal lead screw 1-3 to enable a transverse sliding rail 1-4 to longitudinally move on a longitudinal sliding rod 1-2 until the height of a magnetic suction cup 5 is consistent with that of a base frame 6;
step five: starting a transverse motor, and driving a clamping hoop 2 to transversely move on a transverse guide rail 1-4 by a transverse lead screw 1-5 until a magnetic sucker 5 is attached to the plane of the side surface of a base frame 6;
step six: starting the magnetic sucker 5 to make the magnetic sucker suck the base frame 6;
step seven: starting a hydraulic pump station 3-2 matched with the hydraulic oil pump 3-1, and adjusting parameters of the hydraulic pump station 3-2 to control the reciprocating speed and the stroke of the hydraulic oil pump 3-1;
step eight: and starting the automatic reversing function of the hydraulic oil pump 3-1 to realize the reciprocating grinding work of the base frame 6 on the bearing box 7.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. The utility model provides a bearing box bed frame grinds nonstandard equipment which characterized in that: the device comprises a feeding mechanism (1), a clamp (2), a hydraulic oil pump (3-1), a hydraulic pump station (3-2), a connecting disc (4) and a magnetic sucker (5);
the clamp (2) is arranged on the feeding mechanism (1), the hydraulic oil pump (3-1) is fixed in the clamp (2), the front part of the hydraulic oil pump (3-1) is connected with the connecting disc (4), and the connecting disc (4) is connected with the magnetic sucker (5).
2. The bearing housing pedestal grinding nonstandard equipment of claim 1, characterized in that: the hydraulic oil pump (3-1) is detachably connected with the clamp (2).
3. The bearing housing pedestal grinding nonstandard equipment of claim 1, characterized in that: the feeding mechanism (1) comprises a base platform (1-1), a longitudinal sliding rod (1-2), a longitudinal lead screw (1-3), a transverse slide rail (1-4) and a transverse lead screw (1-5);
the vertical sliding rod (1-2) is vertically fixed on the base platform (1-1), the vertical lead screw (1-3) is vertically fixed on the side portion of the vertical sliding rod (1-2), the vertical lead screw (1-3) and the vertical sliding rod (1-2) are arranged at intervals, the transverse slide rail (1-4) is connected with the vertical sliding rod (1-2) in a sliding mode, the transverse slide rail (1-4) is connected with the vertical lead screw (1-3) in a threaded mode, the transverse lead screw (1-5) is arranged on the transverse slide rail (1-4), a longitudinal motor and a transverse motor are arranged on the transverse slide rail (1-4), the longitudinal motor is connected with the vertical lead screw (1-3) through a gear, the longitudinal motor controls the transverse slide rail (1-4) to move up and down along the vertical lead screw (1-3), and the transverse motor controls the transverse lead screw (1-5) to rotate.
4. The bearing housing pedestal grinding nonstandard equipment of claim 1, characterized in that: the clamp (2) is connected with the transverse sliding rail (1-4) in a sliding mode, and the clamp (2) is connected with the transverse lead screw (1-5) in a threaded mode.
5. The use method of the bearing box base frame grinding nonstandard equipment is characterized by comprising the following steps of: it comprises the following steps:
the method comprises the following steps: the bottom surface of the bearing box (7) is upward, and the bearing box is placed on a workbench (8) and fixed;
step two: placing the base station (1-1) on a workbench (8) and fixing;
step three: hoisting the base frame (6) to the bearing box (7) to enable the lapping plane of the base frame (6) to be superposed with the lapping plane of the bearing box (7);
step four: starting a longitudinal motor, and driving a longitudinal lead screw (1-3) to enable a transverse slide rail (1-4) to longitudinally move on a longitudinal slide rod (1-2) until the height of a magnetic suction cup (5) is consistent with that of a base frame (6);
step five: starting a transverse motor, and driving a clamp (2) to transversely move on a transverse guide rail (1-4) by a transverse lead screw (1-5) until a magnetic sucker (5) is attached to the plane of the side surface of a base frame (6);
step six: starting the magnetic sucker (5) to enable the magnetic sucker to suck the base frame (6);
step seven: starting a hydraulic pump station (3-2) matched with the hydraulic oil pump (3-1), and adjusting parameters of the hydraulic pump station (3-2) to control the reciprocating speed and the stroke of the hydraulic oil pump (3-1);
step eight: the automatic reversing function of the hydraulic oil pump (3-1) is started, and the reciprocating grinding work of the base frame (6) on the bearing box (7) is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210664724.0A CN115284167A (en) | 2022-06-13 | 2022-06-13 | Bearing box base frame grinding nonstandard equipment and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210664724.0A CN115284167A (en) | 2022-06-13 | 2022-06-13 | Bearing box base frame grinding nonstandard equipment and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115284167A true CN115284167A (en) | 2022-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210664724.0A Pending CN115284167A (en) | 2022-06-13 | 2022-06-13 | Bearing box base frame grinding nonstandard equipment and using method thereof |
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| CN (1) | CN115284167A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1507015A (en) * | 1975-04-07 | 1978-04-12 | Defibrator Ab | Device for preventing metallic contact and for determining and controlling the spacing between grinding members |
| JP2012161861A (en) * | 2011-02-04 | 2012-08-30 | Disco Corp | Processing machine |
| CN103722485A (en) * | 2013-12-27 | 2014-04-16 | 天津重型装备工程研究有限公司 | Automatic grinding and turnover device for sector plate of recoiling machine |
| CN204321819U (en) * | 2014-10-24 | 2015-05-13 | 安阳市睿恒数控机床有限公司 | A kind of electric pushrod is to grinding device |
| JP2016193480A (en) * | 2015-03-31 | 2016-11-17 | 株式会社東京精密 | Grinder |
| CN106425755A (en) * | 2016-06-30 | 2017-02-22 | 无锡前洲兴华机械有限公司 | Labor-saving grinding machine |
| CN207139531U (en) * | 2017-08-10 | 2018-03-27 | 浙江大东鞋业有限公司 | A kind of automatic grinding device |
| CN207873942U (en) * | 2018-01-04 | 2018-09-18 | 中车齐齐哈尔车辆有限公司 | Oilstone grinder |
| CN110524406A (en) * | 2019-08-12 | 2019-12-03 | 大连理工大学 | A kind of high-precision grinding flat plate is to grinding processing unit (plant) |
| CN212918893U (en) * | 2020-06-05 | 2021-04-09 | 中国第一汽车股份有限公司 | Pneumatic oilstone polishing tool |
-
2022
- 2022-06-13 CN CN202210664724.0A patent/CN115284167A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1507015A (en) * | 1975-04-07 | 1978-04-12 | Defibrator Ab | Device for preventing metallic contact and for determining and controlling the spacing between grinding members |
| JP2012161861A (en) * | 2011-02-04 | 2012-08-30 | Disco Corp | Processing machine |
| CN103722485A (en) * | 2013-12-27 | 2014-04-16 | 天津重型装备工程研究有限公司 | Automatic grinding and turnover device for sector plate of recoiling machine |
| CN204321819U (en) * | 2014-10-24 | 2015-05-13 | 安阳市睿恒数控机床有限公司 | A kind of electric pushrod is to grinding device |
| JP2016193480A (en) * | 2015-03-31 | 2016-11-17 | 株式会社東京精密 | Grinder |
| CN106425755A (en) * | 2016-06-30 | 2017-02-22 | 无锡前洲兴华机械有限公司 | Labor-saving grinding machine |
| CN207139531U (en) * | 2017-08-10 | 2018-03-27 | 浙江大东鞋业有限公司 | A kind of automatic grinding device |
| CN207873942U (en) * | 2018-01-04 | 2018-09-18 | 中车齐齐哈尔车辆有限公司 | Oilstone grinder |
| CN110524406A (en) * | 2019-08-12 | 2019-12-03 | 大连理工大学 | A kind of high-precision grinding flat plate is to grinding processing unit (plant) |
| CN212918893U (en) * | 2020-06-05 | 2021-04-09 | 中国第一汽车股份有限公司 | Pneumatic oilstone polishing tool |
Non-Patent Citations (1)
| Title |
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| 刘伟;童慧芬;李梅;李和仙;: "导轨自动刮研系统的设计与研究", 制造技术与机床, no. 01 * |
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Effective date of registration: 20230104 Address after: 150000 building 3, high tech production base, Nangang District, Harbin City, Heilongjiang Province Applicant after: HARBIN TURBINE Co.,Ltd. Applicant after: HADIAN POWER EQUIPMENT NATIONAL ENGINEERING RESEARCH CENTER CO.,LTD. Address before: 150046 No. three power road 345, Xiangfang District, Heilongjiang, Harbin Applicant before: HARBIN TURBINE Co.,Ltd. |
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Application publication date: 20221104 |
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