CN114215182A - Research on connection adjusting device of steel structure node - Google Patents
Research on connection adjusting device of steel structure node Download PDFInfo
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- CN114215182A CN114215182A CN202210012168.9A CN202210012168A CN114215182A CN 114215182 A CN114215182 A CN 114215182A CN 202210012168 A CN202210012168 A CN 202210012168A CN 114215182 A CN114215182 A CN 114215182A
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- clamping block
- block
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- driving
- plate
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B1/5825—Connections for building structures in general of bar-shaped building elements with a closed cross-section
- E04B1/5837—Connections for building structures in general of bar-shaped building elements with a closed cross-section of substantially circular form
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2406—Connection nodes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
Abstract
The invention discloses a research of a connection adjusting device of a steel structure node, belonging to the technical field of steel structures and comprising a main steel pipe column and a main clamping block, wherein the main clamping block is arranged in an Contraband shape, the main clamping block is arranged on the outer wall of the main steel pipe column through a fixing bolt, the middle part of the outer side of the main clamping block is provided with a fixing rod, the outer side of the main clamping block is symmetrically provided with two arc-shaped slide rails, two mounting plates are arranged between the two arc-shaped slide rails in a sliding manner, the middle parts of the two mounting plates are respectively and symmetrically and rotatably provided with an auxiliary clamping block, the auxiliary clamping block is also arranged in a Contraband shape, the middle part of each mounting plate is provided with a limiting component matched with the auxiliary clamping block, the middle parts of the two auxiliary clamping blocks are respectively provided with a clamping component, the height of the auxiliary clamping block is accurately adjusted through the mutual matching of the mounting plates and the arc-shaped slide rails, the height of the auxiliary clamping block is prevented from being adjusted by disassembling the main clamping block, the problem of main clamping block dismouting comparatively troublesome and be difficult to accurate height-adjusting is solved.
Description
Technical Field
The invention relates to the technical field of steel structures, in particular to research on a connection adjusting device of a steel structure node.
Background
The steel structure connection refers to the interconnection between steel structural members or components, and the steel structure connection is welded joint connection, bolted connection or riveted connection commonly used, and the riveted connection and the welded joint connection are generally used by factories, and on the workplace, in order to facilitate the installation and subsequent disassembly of workers, high-strength bolted connection is generally adopted.
Most of current steel construction connecting device realize the effect of quick installation dismantlement through setting up main grip block and vice grip block, but in the installation, be difficult to realize highly carrying out accurate regulation to vice grip block, need carry out coarse adjustment through the height of adjusting main grip block, the dismouting operation of main grip block is comparatively time-consuming and energy-consuming, in view of this, we propose a steel structure node's connection adjusting device's research.
Disclosure of Invention
The invention aims to: in order to solve the above-mentioned problems, a connection adjustment device for a steel structure joint has been proposed.
In order to achieve the purpose, the invention adopts the following technical scheme:
the research on the connection adjusting device of the steel structure node comprises a main steel pipe column and a main clamping block, wherein the main clamping block is arranged in a Contraband type mode, the main clamping block is installed on the outer wall of the main steel pipe column through a fixing bolt, a fixing rod is arranged in the middle of the outer side of the main clamping block, two arc-shaped slide rails are symmetrically arranged on the outer side of the main clamping block, two mounting plates are arranged between the two arc-shaped slide rails in a sliding mode, auxiliary clamping blocks are symmetrically and rotatably arranged in the middle of the two mounting plates, the auxiliary clamping blocks are also arranged in a Contraband type mode, limiting assemblies matched with the auxiliary clamping blocks are arranged in the middle of the mounting plates, and clamping assemblies are arranged in the middle of the two auxiliary clamping blocks;
the limiting component comprises a driving cavity arranged in the middle of the mounting plate, a first driving plate and a second driving plate which are symmetrically and slidably arranged in the middle of the driving cavity, a driving block is rotatably arranged between the first driving plate and the second driving plate, a first external threaded rod and a second external threaded rod are respectively arranged at two sides of the driving block, the first external threaded rod and the second external threaded rod have opposite spiral directions, lock nuts are sleeved at the middle parts of the first external threaded rod and the second external threaded rod, a first internal thread hole matched with the first external thread rod is arranged in the middle of one end of the first driving plate, the other end of the first driving plate penetrates out of the driving cavity and is arranged on a first abutting block matched with the fixed rod, a second internal threaded hole matched with the second external threaded rod is formed in the middle of one end of the second driving plate, the other end of the second driving plate penetrates out of the driving cavity and is provided with a second abutting block matched with the rotating shaft of the auxiliary clamping block;
clamping component locates the connecting plate at vice grip block middle part including sliding and rotates the dwang of locating the connecting plate middle part, one side that the mounting panel was kept away from to the connecting plate is equipped with the clamp plate, the dwang passes through the bearing and is connected with the connecting plate, the dwang upper end is equipped with the operation piece, the dwang lower extreme runs through out the connecting plate middle part and is equipped with the external screw thread section, the third internal thread hole with external screw thread section matched with is seted up at the pivot middle part of vice grip block.
As a further description of the above technical solution:
two the mounting panel both ends all are seted up with arc slide rail matched with smooth chamber.
As a further description of the above technical solution:
two arc slide rails pass through bolt fixed mounting in the main grip block outside, two arc slide rail both ends run through respectively into the sliding chamber and are equipped with the slider.
As a further description of the above technical solution:
the inner wall of the auxiliary clamping block is provided with a sliding groove matched with the connecting plate, and the middle part of the side wall of the auxiliary clamping block is rotationally and symmetrically provided with connecting bolts.
As a further description of the above technical solution:
and anti-skidding fine grains are arranged on the surface of one side, close to the auxiliary clamping block, of the pressing plate.
As a further description of the above technical solution:
first butt joint piece is the arc setting and is made by the rubber material with second butt joint piece.
As a further description of the above technical solution:
and one ends of the first driving plate and the second driving plate are respectively provided with an anti-slip gasket matched with the locking nut.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, the mounting plate is matched with the arc-shaped slide rail, so that the height of the auxiliary clamping block can be accurately adjusted, the problem that the main clamping block needs to be disassembled to adjust the height of the auxiliary clamping block is avoided, and the problems that the main clamping block is troublesome to disassemble and assemble and the height is difficult to accurately adjust are solved.
2. According to the invention, the limiting assembly is matched with the auxiliary clamping block, so that the angle of the auxiliary clamping block is adjusted, namely the steel pipe installation angle is adjusted, the effect of firmly and stably fixing the steel pipe is realized through the mutual matching of the clamping assembly and the auxiliary clamping block, and the stability of steel pipe installation is improved.
Drawings
Fig. 1 is an external view of a connection adjustment apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating an internal structure of a mounting plate provided according to an embodiment of the present invention;
FIG. 3 illustrates a schematic diagram of the structure at A in FIG. 2 according to an embodiment of the present invention;
FIG. 4 illustrates a top cross-sectional view of a clamp assembly structure provided in accordance with an embodiment of the present invention;
figure 5 illustrates a side cross-sectional view of a clamp assembly construction provided in accordance with an embodiment of the present invention.
Illustration of the drawings: 1. a main steel pipe column; 2. a main clamping block; 3. mounting a plate; 4. a secondary clamping block; 5. a limiting component; 501. a first drive plate; 502. a second drive plate; 503. a drive block; 504. a first externally threaded rod; 505. a second outer threaded rod; 506. a first abutment block; 507. a second abutment block; 508. locking a nut; 6. a clamping assembly; 601. a connecting plate; 602. rotating the rod; 603. pressing a plate; 7. an arc-shaped slide rail.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution:
the research on the connection adjusting device of the steel structure node comprises a main steel pipe column 1 and a main clamping block 2, wherein the main clamping block 2 is arranged in an Contraband type mode, the main clamping block 2 is installed on the outer wall of the main steel pipe column 1 through a fixing bolt, a fixing rod is arranged in the middle of the outer side of the main clamping block 2, two arc-shaped slide rails 7 are symmetrically arranged on the outer side of the main clamping block 2, two mounting plates 3 are arranged between the two arc-shaped slide rails 7 in a sliding mode, auxiliary clamping blocks 4 are symmetrically and rotatably arranged in the middle of the two mounting plates 3, the auxiliary clamping blocks 4 are also arranged in a Contraband type mode, limiting assemblies 5 matched with the auxiliary clamping blocks 4 are arranged in the middle of the mounting plates 3, and clamping assemblies 6 are arranged in the middle of the two auxiliary clamping blocks 4;
the limiting component 5 comprises a driving cavity arranged in the middle of the mounting plate 3, a first driving plate 501 and a second driving plate 502 symmetrically and slidably arranged in the middle of the driving cavity, a driving block 503 is rotatably arranged between the first driving plate 501 and the second driving plate 502, a first external threaded rod 504 and a second external threaded rod 505 are respectively arranged on two sides of the driving block 503, the spiral directions of the first external threaded rod 504 and the second external threaded rod 505 are opposite, a lock nut 508 is sleeved in the middle of each of the first external threaded rod 504 and the second external threaded rod 505, a first internal threaded hole matched with the first external threaded rod 504 is formed in the middle of one end of the first driving plate 501, the other end of the first driving plate 501 penetrates through the driving cavity and is arranged on a first abutting block 506 matched with a fixing rod, a second internal threaded hole matched with the second external threaded rod 505 is formed in the middle of one end of the second driving plate 502, the other end of the second driving plate 502 penetrates out of the driving cavity and is provided with a second abutting block 507 matched with the rotating shaft of the auxiliary clamping block 4;
clamping component 6 locates the connecting plate 601 at vice grip block 4 middle part including sliding and locates the dwang 602 at connecting plate 601 middle part with rotating, one side that mounting panel 3 was kept away from to connecting plate 601 is equipped with clamp plate 603, dwang 602 is connected with connecting plate 601 through the bearing, dwang 602 upper end is equipped with the operation piece, dwang 602 lower extreme runs through out connecting plate 601 middle part and is equipped with the external screw thread section, vice grip block 4's pivot middle part is seted up with external screw thread section matched with third internal thread hole.
Furthermore, two sliding cavities matched with the arc-shaped sliding rails 7 are formed in two ends of the mounting plate 3.
Further, two arc slide rail 7 passes through bolt fixed mounting in the 2 outsides of main grip block, two 7 both ends of arc slide rail run through respectively into the sliding chamber and be equipped with the slider for in practical application, make mounting panel 3 rotate around the dead lever along arc slide rail 7 for adjust the position of vice grip block 4.
Further, the inner wall of the auxiliary clamping block 4 is provided with a sliding chute matched with the connecting plate 601, and the middle part of the side wall of the auxiliary clamping block 4 is rotationally and symmetrically provided with connecting bolts; in practical application, the steel pipe is clamped and fixed through the connecting bolt, and the external thread section at the lower end of the rotating rod 602 is matched with the third internal thread hole, so that the connecting plate 601 stably slides in the sliding groove, and the pressing plate 603 presses on the surface of the clamped steel pipe.
Further, anti-skid fine lines are arranged on the surface of one side, close to the auxiliary clamping block 4, of the pressing plate 603; in practical application, the pressing plate 603 is in contact with the surface of the steel pipe clamped by the auxiliary clamping block 4, so that the clamping stability is further improved.
Further, the first abutting block 506 and the second abutting block 507 are both arc-shaped and made of rubber; in practical application, make first butt joint piece 506 bigger with dead lever surface butt area, the butt is more abundant, prevents effectively that mounting panel 3 from producing the motion for second butt joint piece 507 is bigger with vice grip block 4's pivot butt area, and the butt is more abundant, prevents effectively that vice grip block 4 from producing the rotation.
Further, one end of each of the first driving plate 501 and the second driving plate 502 is provided with an anti-slip washer matched with the locking nut 508; in practice, the locking nut 508 and the anti-slip washer are brought into abutment with each other, further restricting the rotation of the first externally threaded rod 504 and the second externally threaded rod 505.
The working principle is as follows: when the steel pipe installing device is used, a worker firstly installs the main clamping block 2 on the main steel pipe column 1 through the fixing bolt, so that the auxiliary clamping block 4 is initially installed in a specified height range, when a steel pipe needs to be installed, the worker firstly operates the driving block 503 in the middle of one of the installing plates 3, before the driving block 503 is rotated, the locking nuts 508 in the middle of the first external threaded rod 504 and the second external threaded rod 505 are sequentially unscrewed, then the driving block 503 is rotated to rotate the first external threaded rod 504 and the second external threaded rod 505, the first external threaded rod 504 and the second external threaded rod 505 rotate to respectively move the first driving plate 501 and the second driving plate 502, the first driving plate 501 and the second driving plate 502 move respectively to separate the first abutting block 506 from the second abutting block 507, at the moment, the installing plate 3 can rotate around the fixing rod along the arc-shaped slide rail 7, the installing plate 3 rotates to move the auxiliary clamping block 4, the auxiliary clamping block 4 moves to enable the auxiliary clamping block 4 to be at an accurate installation height, and meanwhile, when the angle of the auxiliary clamping block 4 needs to be adjusted, a worker can directly rotate the auxiliary clamping block 4 to adjust the installation angle under the condition that the position limitation of the auxiliary clamping block 4 is relieved;
after the adjustment is completed, the worker reversely rotates the driving block 503 to enable the first externally threaded rod 504 and the second externally threaded rod 505 to rotate, the first externally threaded rod 504 and the second externally threaded rod 505 rotate to enable the first driving plate 501 and the second driving plate 502 to move respectively, the first driving plate 501 moves to enable the first abutting block 506 to abut against the surface of the fixed rod to play a role in limiting the mounting plate 3, the second driving plate 502 moves to enable the second abutting block 507 to abut against the surface of the rotating shaft of the auxiliary clamping block 4 to play a role in limiting the auxiliary clamping block 4, and then the first externally threaded rod 504 and a locking nut 508 in the middle of the second externally threaded rod 505 are screwed tightly;
then the staff puts into vice grip block 4 middle part with the steel pipe that needs to install, screws up the connecting bolt in vice grip block 4 lateral wall middle part and fixes the steel pipe, then the staff rotates the operation piece and makes dwang 602 rotate, and dwang 602 rotates through the mutually supporting of external thread section and third internal thread hole for connecting plate 601 motion, and connecting plate 601 motion makes clamp plate 603 move and extrude the surface at the steel pipe, realizes the effect firm to the steel pipe.
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 person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. A research on a connection adjusting device of a steel structure node comprises a main steel pipe column (1) and a main clamping block (2), the main clamping block (2) is arranged in an Contraband shape, the main clamping block (2) is arranged on the outer wall of the main steel pipe column (1) through a fixing bolt, it is characterized in that a fixed rod is arranged in the middle of the outer side of the main clamping block (2), two arc-shaped slide rails (7) are symmetrically arranged on the outer side of the main clamping block (2), two mounting plates (3) are arranged between the two arc-shaped slide rails (7) in a sliding manner, auxiliary clamping blocks (4) are symmetrically and rotatably arranged in the middle of the two mounting plates (3), the auxiliary clamping blocks (4) are also arranged in an Contraband shape, the middle parts of the mounting plates (3) are provided with limiting assemblies (5) matched with the auxiliary clamping blocks (4), and the middle parts of the two auxiliary clamping blocks (4) are provided with clamping assemblies (6);
the limiting component (5) comprises a driving cavity arranged in the middle of the mounting plate (3), a first driving plate (501) and a second driving plate (502) which are symmetrically and slidably arranged in the middle of the driving cavity, a driving block (503) is arranged between the first driving plate (501) and the second driving plate (502) in a rotating mode, a first external threaded rod (504) and a second external threaded rod (505) are respectively arranged on two sides of the driving block (503), the spiral directions of the first external threaded rod (504) and the second external threaded rod (505) are opposite, locking nuts (508) are respectively sleeved in the middle of the first external threaded rod (504) and the second external threaded rod (505), a first internal threaded hole matched with the first external threaded rod (504) is formed in the middle of one end of the first driving plate (501), and the other end of the first driving plate (501) penetrates through the driving cavity and is arranged on a first abutting block (506) matched with a fixing rod, a second internal threaded hole matched with a second external threaded rod (505) is formed in the middle of one end of the second driving plate (502), and the other end of the second driving plate (502) penetrates through the driving cavity and is provided with a second abutting block (507) matched with a rotating shaft of the auxiliary clamping block (4);
clamping component (6) locate connecting plate (601) at vice grip block (4) middle part including sliding and rotate dwang (602) of locating connecting plate (601) middle part, one side that mounting panel (3) were kept away from in connecting plate (601) is equipped with clamp plate (603), dwang (602) are connected with connecting plate (601) through the bearing, dwang (602) upper end is equipped with the operation piece, dwang (602) lower extreme runs through out connecting plate (601) middle part and is equipped with the external screw thread section, the third internal thread hole with external screw thread section matched with has been seted up at the pivot middle part of vice grip block (4).
2. The research of a connection adjusting device of steel structure node according to claim 1, characterized in that, both ends of two said mounting plates (3) are equipped with the sliding cavity matching with the arc slide rail (7).
3. The research of the connection adjusting device of the steel structure node according to claim 1, characterized in that the two arc-shaped sliding rails (7) are fixedly installed at the outer side of the main clamping block (2) through bolts, and two ends of the two arc-shaped sliding rails (7) respectively penetrate through the sliding cavities and are provided with sliding blocks.
4. The research of the connection adjusting device of the steel structure node according to claim 1 is characterized in that the inner wall of the auxiliary clamping block (4) is provided with a sliding groove matched with the connecting plate (601), and the middle part of the side wall of the auxiliary clamping block (4) is rotationally and symmetrically provided with connecting bolts.
5. The research on the connection adjusting device of the steel structure node according to claim 1 is characterized in that the surface of one side of the pressing plate (603) close to the auxiliary clamping block (4) is provided with anti-skid fine lines.
6. The research on the connection adjusting device of the steel structure node as claimed in claim 1, wherein the first abutting block (506) and the second abutting block (507) are both arc-shaped and made of rubber.
7. The research on the connection adjusting device of the steel structure node is characterized in that one end of each of the first driving plate (501) and the second driving plate (502) is provided with an anti-slip washer matched with the locking nut (508).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210012168.9A CN114215182B (en) | 2022-01-06 | 2022-01-06 | Connection adjusting device of steel structure node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210012168.9A CN114215182B (en) | 2022-01-06 | 2022-01-06 | Connection adjusting device of steel structure node |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114215182A true CN114215182A (en) | 2022-03-22 |
| CN114215182B CN114215182B (en) | 2023-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210012168.9A Active CN114215182B (en) | 2022-01-06 | 2022-01-06 | Connection adjusting device of steel structure node |
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| Country | Link |
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| CN (1) | CN114215182B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116378227A (en) * | 2023-05-09 | 2023-07-04 | 华星钢构股份有限公司 | Metal connection structure with reinforced fatigue resistance |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112962788A (en) * | 2021-03-08 | 2021-06-15 | 四川华浩建筑工程有限公司 | Rigid connection node device for assembled H-shaped steel beam and steel column and installation method |
| CN112982665A (en) * | 2021-03-09 | 2021-06-18 | 中国十七冶集团有限公司 | Assembled steel structure node component and using method thereof |
| CN215166615U (en) * | 2021-04-13 | 2021-12-14 | 青岛恒星科技学院 | Steel construction assembled node structure |
-
2022
- 2022-01-06 CN CN202210012168.9A patent/CN114215182B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112962788A (en) * | 2021-03-08 | 2021-06-15 | 四川华浩建筑工程有限公司 | Rigid connection node device for assembled H-shaped steel beam and steel column and installation method |
| CN112982665A (en) * | 2021-03-09 | 2021-06-18 | 中国十七冶集团有限公司 | Assembled steel structure node component and using method thereof |
| CN215166615U (en) * | 2021-04-13 | 2021-12-14 | 青岛恒星科技学院 | Steel construction assembled node structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116378227A (en) * | 2023-05-09 | 2023-07-04 | 华星钢构股份有限公司 | Metal connection structure with reinforced fatigue resistance |
| CN116378227B (en) * | 2023-05-09 | 2023-08-22 | 华星钢构股份有限公司 | Metal connection structure with reinforced fatigue resistance |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114215182B (en) | 2023-09-08 |
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