CN110656703B - Multifunctional sliding shoe sliding post-top construction device for non-rail interface - Google Patents
Multifunctional sliding shoe sliding post-top construction device for non-rail interface Download PDFInfo
- Publication number
- CN110656703B CN110656703B CN201810694568.6A CN201810694568A CN110656703B CN 110656703 B CN110656703 B CN 110656703B CN 201810694568 A CN201810694568 A CN 201810694568A CN 110656703 B CN110656703 B CN 110656703B
- Authority
- CN
- China
- Prior art keywords
- sliding
- sliding shoe
- track
- limiting plate
- column
- Prior art date
- 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.)
- Active
Links
Images
Classifications
-
- 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
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
-
- 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
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
- E04B2001/3588—Extraordinary methods of construction, e.g. lift-slab, jack-block using special lifting or handling devices, e.g. gantries, overhead conveying rails
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention relates to the field of on-site preparation, transportation or processing of building materials or building components, in particular to a multifunctional sliding shoe sliding through column top construction device without a track interface. The utility model provides a multi-functional piston shoes that is used for no track interface slide and cross capital construction equipment, includes concrete column (10) and concrete beam (11), characterized by: the device is characterized by further comprising a rail clamping device (1), a sliding track (2), a hydraulic oil pipe (3), a hydraulic ejector (4), a jack fixing frame (5), a sliding shoe fixing limiting plate (61), a sliding shoe detachable limiting plate (62), a sliding shoe (7), a sliding shoe bottom plate (8), a column top limiting plate (9), a jack (12) and a chain block (13), wherein the column top limiting plate (9) is fixed at the top of the concrete column (10); the sliding track (2) is fixed on the concrete beam (11); the sliding shoes (7) are movably arranged on the sliding track (2) through sliding shoe bottom plates (8). The invention is convenient to use and maintain.
Description
Technical Field
The invention relates to the field of on-site preparation, transportation or processing of building materials or building components, in particular to a multifunctional sliding shoe sliding through column top construction device without a track interface.
Background
In recent years, space structure span is increasingly large, modeling is increasingly novel and unique, structure is also increasingly complex, and traditional construction process can not meet construction requirements. The construction of large-span space structures has gradually adopted a novel process of installing sliding special equipment. Although the sliding condition is considered thoroughly when the steel structure slides, a plurality of uncontrollable factors still exist in the sliding process and pass through a trackless interface, and the problems of rail gnawing, deviation and the like of the sliding shoe are easy to occur.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a building construction process which is convenient to use and maintain and improves the construction efficiency, and the invention discloses a multifunctional sliding shoe sliding column-top construction device for a non-rail interface.
The invention achieves the purpose by the following technical scheme:
the utility model provides a multi-functional piston shoe that is used for no track interface slides and crosses capital construction equipment, includes concrete column and concrete beam, and the concrete beam is fixed on concrete column, characterized by horizontally: also comprises a rail clamping device, a sliding rail, a hydraulic oil pipe, a hydraulic ejector, a jack fixing frame, a sliding shoe fixing limit plate, a sliding shoe detachable limit plate, a sliding shoe bottom plate, a column top limit plate, a jack and a chain block,
a column top limiting plate is fixed at the top of the concrete column; the sliding rail is fixed on the concrete beam, and the elevation of the interface in the sliding advancing direction is lower than that of the rear part at the joint of the sliding rail or the replacement sliding interface in the laying process of the sliding rail, so that the sliding rail is in the trend of a lower step;
the sliding shoe is movably arranged on the sliding track through a sliding shoe bottom plate, a sliding shoe fixing limiting plate and a sliding shoe detachable limiting plate are arranged on two sides of the sliding shoe along the direction of the sliding track, the sliding shoe fixing limiting plate is fixedly welded on the sliding shoe, the sliding shoe detachable limiting plate is detachably arranged on the sliding shoe fixing limiting plate through a bolt-nut assembly, the sliding shoe detachable limiting plate is provided with a chamfer with the radius of R at one side close to the track in the sliding direction of the sliding shoe, and the sliding shoe bottom plate is provided with chamfers with the radius of R in the sliding direction of a contact surface with the sliding track and two sides;
a jack fixing frame is arranged on the sliding shoe, the jack is arranged on the jack fixing frame, the jacking end of the jack props against the sliding shoe, and when the sliding shoe moves to the column top of the concrete column along the sliding track, the bottom of the jack is movably arranged on the column top of the concrete column through a liner backing plate and a round steel roller;
the rail clamping device is clamped on the sliding rail and is connected with the sliding shoe through a hydraulic ejector, and the hydraulic ejector is connected with the oil storage tank through a hydraulic oil pipe;
the chain block is connected with a rail clamping device.
The multifunctional sliding shoe sliding post-top construction device for the non-track interface is characterized in that: the top of the concrete column is connected with the column top limiting plate through a stiffening plate, and the height difference of adjacent interfaces at the splicing part of the sliding tracks is 3-5 mm.
When the invention is used, in order to prevent the phenomenon that the front end plate edge of the sliding shoe bottom plate and the sliding rail gnaw the rail, a chamfer with the radius of R is made in the advancing direction of the contact surface of the sliding shoe bottom plate and the sliding rail; similarly, when the sliding shoe slides on the top of the concrete column, the advancing directions of the contact surfaces of the sliding shoe and the sliding shoe fixing limit plate and the sliding shoe detachable limit plate are chamfered with the radius of R;
when the sliding interfaces are replaced at the joints of two sliding rails or other positions, the elevation of the next interface is lower than that of the previous interface, and the height difference is generally 3-5 mm, so that the sliding boots are in a downward step trend when passing through, and the rail gnawing phenomenon is prevented;
welding a sliding shoe fixing limiting plate and a sliding shoe detachable limiting plate at a certain distance from the sliding track along the parallel direction of the sliding track at the front end and the rear end of the sliding direction of the sliding shoe; dismantling the detachable sliding shoe limiting plate when the sliding shoe slides to the front of the top of the concrete column, replacing the limiting function of the detachable sliding shoe limiting plate with the column top limiting plate, and recovering the detachable sliding shoe limiting plate after the sliding shoe passes through the top of the concrete column;
column top limiting plates are arranged on two sides of the column top of the concrete column; the distance between the column positioning limiting plate and the sliding shoe is equal to the distance between the sliding shoe detachable limiting plate and the sliding track, a stiffening plate can be arranged on the outer side of the column top limiting plate to enhance the strength of the column top limiting plate, the sliding shoe detachable limiting plate cannot be used when the sliding shoe slides to the column top of the concrete column, and the sliding shoe detachable limiting plate needs to be detached before sliding to the column top of the concrete column, so that the length of the column top limiting plate needs to be prolonged, the column top limiting plate can effectively play a role in limiting the sliding shoe after the sliding shoe detachable limiting plate is detached, and the sliding shoe detachable limiting plate is recovered after the sliding shoe passes through the column top of the concrete column;
the jack is arranged on the sliding shoe and used as a jacking device, the jack is specially erected for preventing or treating abnormal conditions in the sliding process, and the jack needs to synchronously perform sliding work after being erected and jacked, so that a base plate and a round steel roller can be placed at the bottom of the jack for reducing the friction force between the jack and the supporting surface at the top of the concrete column, and the sliding friction force is converted into rolling friction force.
The invention discloses a construction device for a steel structure to slide through a post top without a track interface, which solves the problems of large friction force, easy rail gnawing and the like of a sliding shoe through the track interface by detaching a sliding track limiting plate and using a jack to assist the sliding shoe to slide through the post top; meanwhile, the sliding shoe is easy to handle when the rail gnawing condition occurs, and the phenomenon that the sliding shoe is greatly laterally deviated when the sliding shoe slides to the top of the column can not occur.
The invention has the following beneficial effects:
1. chamfers with the radius of R are arranged on the contact surfaces of the sliding shoe bottom plate and the rail and the like, so that the rail gnawing probability is greatly reduced;
2. the unloading-free sliding process subtracts the complex unloading work after the sliding is in place;
3. the skid shoe is provided with the detachable limiting plate, so that the limiting plate can be detached in time when passing through the positions such as the railless interface column head and the like, and the front limiting plate and the rear limiting plate can be recovered conveniently after sliding through the section;
4. the non-track interface post top limiting plate is arranged, so that the limiting effect of the sliding shoe can be effectively achieved after the sliding shoe limiting plate cannot be used and removed;
5. when the rail gnawing condition is prevented or treated, a jacking jack is erected, a round steel rolling rod is placed at the bottom of the jack, and the sliding friction force of the jack is changed into rolling friction force. The problem of rail gnawing is simply and effectively treated.
6. The crawler lifts the rail clamping device and the hydraulic ejector by using a chain block in a non-track section, and recovers after sliding through the section.
Drawings
FIG. 1 is a front view of the present invention without the skid shoe slipping in front of the concrete column;
FIG. 2 is a view from A-A of FIG. 1;
FIG. 3 is an enlarged view of a portion of area A of FIG. 1;
FIG. 4 is a partial enlarged view of area B of FIG. 2;
FIG. 5 is a front view of the present invention with the slipper shoes slipped over the concrete column;
FIG. 6 is a view from the B-B direction of FIG. 5;
FIG. 7 is an enlarged view of a portion of the area C in FIG. 5;
FIG. 8 is a front view of the present invention after the slipper has slipped over the concrete column;
FIG. 9 is a view from the C-C direction of FIG. 8;
fig. 10 is a partially enlarged view of a region D in fig. 9.
Detailed Description
The invention is further illustrated by the following specific examples.
Example 1
The utility model provides a multi-functional piston shoe that is used for no track interface slides and crosses capital construction equipment, includes rail clamping device 1, slide track 2, hydraulic pressure oil pipe 3, hydraulic ram pusher 4, jack mount 5, piston shoe fixed limiting plate 61, the removable limiting plate 62 of piston shoe, piston shoe 7, piston shoe bottom plate 8, capital limiting plate 9, concrete column 10, concrete roof beam 11, jack 12 and chain block 13, as shown in fig. 1 ~ 10, the concrete structure is:
the concrete column 10 is vertically fixed on the ground, the top of the concrete column 10 is welded and fixed with the column top limiting plate 9, and the concrete beam 11 is horizontally fixed on the concrete column 10; the sliding rail 2 is fixed on the concrete beam 11, and the elevation of the interface in the sliding advancing direction is lower than that of the rear part at the joint of the sliding rail 2 or the replacement sliding interface in the laying process of the sliding rail 2, so that the sliding rail 2 is in the trend of a lower step;
the sliding shoe 7 is movably arranged on the sliding track 2 through a sliding shoe bottom plate 8, a sliding shoe fixing limiting plate 61 and a sliding shoe detachable limiting plate 62 are arranged on two sides of the sliding shoe 7 along the direction of the sliding track 2, wherein the sliding shoe fixing limiting plate 61 is fixedly welded on the sliding shoe 7, the sliding shoe detachable limiting plate 62 is detachably arranged on the sliding shoe fixing limiting plate 61 through a bolt-nut assembly, a chamfer with the radius of R is formed in one side, close to the track, of the sliding shoe 7 in the sliding direction of the sliding shoe detachable limiting plate 62, and chamfers with the radius of R are arranged on the sliding shoe bottom plate 8 in the sliding direction and two sides of a contact surface (such as a contact surface with a column top limiting plate 9 arranged on a concrete column 10) with the sliding;
a jack fixing frame 5 is arranged on the sliding shoe 7, a jack 12 is arranged on the jack fixing frame 5, the jacking end of the jack 12 props against the sliding shoe 7, and when the sliding shoe 7 moves to the column top of the concrete column 10 along the sliding track 2, the bottom of the jack 12 is movably arranged on the column top of the concrete column 10 through a gasket backing plate 14 and a round steel roller 15;
the rail clamping device 1 is clamped on the sliding rail 2, the rail clamping device 1 is connected with a sliding shoe 7 through a hydraulic ejector 4, and the hydraulic ejector 4 is connected with an oil storage tank through a hydraulic oil pipe 3;
the chain block 13 is connected with the rail clamping device 1.
In this embodiment: the top of the concrete column 10 is connected with the column top limiting plate 9 through a stiffening plate, and the height difference of adjacent interfaces at the splicing part of the sliding track 2 is 3-5 mm.
In the use of the present embodiment, the sliding shoe 7 is not slid to the front of the concrete column 10 as shown in fig. 1 to 4, the arrow a in fig. 1, the arrow b in fig. 3, and the arrow c in fig. 4 all indicate the sliding direction of the sliding shoe 7, the sliding shoe 7 is slid to the concrete column 10 as shown in fig. 5 to 7, and the sliding shoe 7 is slid to the rear of the concrete column 10 as shown in fig. 8 to 9;
in order to prevent the phenomenon that the front end plate edge of the sliding shoe bottom plate 8 and the sliding rail 2 gnaw the rail, a chamfer with the radius of R is formed in the advancing direction of the contact surface of the sliding shoe bottom plate 8 and the sliding rail 2; similarly, when the top of the concrete column 10 slides, the forward directions of the contact surfaces of the sliding shoes 7 and the sliding shoe fixing limit plates 61 and the sliding shoe detachable limit plates 62 are chamfered with the radius of R;
when the joints of the two sliding tracks 2 or other sliding interfaces are replaced, the elevation of the latter interface is lower than that of the former interface, and the height difference is generally 3-5 mm, so that the sliding shoes 7 are in a downward step trend when passing through, and the rail gnawing phenomenon is prevented;
welding a sliding shoe fixing limit plate 61 and a sliding shoe detachable limit plate 62 at the front end and the rear end of the sliding shoe 7 in the sliding direction at a certain distance from the sliding rail 2 along the direction parallel to the sliding rail 2; when the sliding shoes 7 slide to the front of the top of the concrete column 10, the sliding shoe detachable limiting plates 62 are detached, the column top limiting plates 9 are used for replacing the limiting function of the sliding shoe detachable limiting plates 62, and the sliding shoe detachable limiting plates 62 are recovered after the sliding shoes 7 pass through the top of the concrete column 10;
column top limiting plates 9 are arranged on two sides of the column top of the concrete column 10; the distance between the column positioning limiting plate 9 and the sliding shoe 7 is equal to the distance between the sliding shoe detachable limiting plate 62 and the sliding track 2, in order to enhance the strength of the column top limiting plate 9, a stiffening plate can be arranged on the outer side of the column top limiting plate 9, and the sliding shoe detachable limiting plate 62 cannot be used when the sliding shoe 7 slides to the top of the concrete column 10, and the sliding shoe detachable limiting plate 62 needs to be detached before sliding to the top of the concrete column 10, so the length of the column top limiting plate 9 needs to be prolonged, the column top limiting plate 9 can effectively limit the sliding shoe 7 after the sliding shoe detachable limiting plate 62 is detached, and the sliding shoe detachable limiting plate 62 is recovered after the sliding shoe 7 passes through the top of the concrete column 10;
a jack 12 is arranged on the sliding shoe 7 and serves as a jacking device, when the sliding is to prevent or treat abnormal conditions, the jack 12 is specially erected, and the jack 12 needs to synchronously slide after being erected and jacked, so that in order to reduce the friction force between the jack 12 and the top supporting surface of the concrete column 10, a backing plate 14 and a round steel roller 15 can be placed at the bottom of the jack 12, and the sliding friction force is converted into rolling friction force.
Claims (2)
1. The utility model provides a multi-functional piston shoes that are used for no track interface slide and cross capital construction equipment, includes concrete column (10) and concrete beam (11), and the top of concrete column (10) is no track interface, and concrete beam (11) are fixed on concrete column (10) horizontally, characterized by: also comprises a rail clamping device (1), a sliding track (2), a hydraulic oil pipe (3), a hydraulic pushing device (4), a jack fixing frame (5), a sliding shoe fixing limiting plate (61), a sliding shoe detachable limiting plate (62), a sliding shoe (7), a sliding shoe bottom plate (8), a column top limiting plate (9), a jack (12) and a chain block (13),
a column top limiting plate (9) is fixed at the top of the concrete column (10); the sliding rail (2) is fixed on the concrete beam (11), and the elevation of the interface in the sliding advancing direction is lower than that of the rear part at the joint of the sliding rail (2) or the replacement sliding interface in the laying process of the sliding rail (2), so that the sliding rail (2) is in the trend of a lower step;
the sliding shoes (7) are movably arranged on the sliding track (2) through a sliding shoe bottom plate (8), sliding shoe fixing limiting plates (61) and sliding shoe detachable limiting plates (62) are arranged on the two sides of the sliding shoes (7) along the direction of the sliding track (2), the sliding shoe fixing limiting plates (61) are welded and fixed on the sliding shoes (7), the sliding shoe detachable limiting plates (62) are detachably arranged on the sliding shoe fixing limiting plates (61) through bolt-nut assemblies, chamfering with the radius R is conducted on one side, close to the track, of the sliding shoe detachable limiting plates (62) in the sliding direction of the sliding shoes (7), and chamfering with the radius R is conducted on the sliding shoe bottom plate (8) in the sliding direction of a contact surface with the sliding track (2) and on the two sides;
a jack fixing frame (5) is arranged on the sliding shoe (7), the jack (12) is arranged on the jack fixing frame (5), the jacking end of the jack (12) jacks the sliding shoe (7), and when the sliding shoe (7) moves to the column top of the concrete column (10) along the sliding track (2), the bottom of the jack (12) is movably arranged at the column top of the concrete column (10) through a gasket backing plate (14) and a round steel roller (15);
the rail clamping device (1) is clamped on the sliding rail (2), the rail clamping device (1) is connected with a sliding shoe (7) through a hydraulic ejector (4), and the hydraulic ejector (4) is connected with an oil storage tank through a hydraulic oil pipe (3);
the chain block (13) is connected with the rail clamping device (1).
2. The multi-functional slipper skid-over-post construction apparatus for trackless interfaces of claim 1, wherein: the top of the concrete column (10) is connected with the column top limiting plate (9) through a stiffening plate, and the height difference of adjacent interfaces at the splicing part of the sliding track (2) is 3-5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810694568.6A CN110656703B (en) | 2018-06-29 | 2018-06-29 | Multifunctional sliding shoe sliding post-top construction device for non-rail interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810694568.6A CN110656703B (en) | 2018-06-29 | 2018-06-29 | Multifunctional sliding shoe sliding post-top construction device for non-rail interface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110656703A CN110656703A (en) | 2020-01-07 |
| CN110656703B true CN110656703B (en) | 2021-06-01 |
Family
ID=69027551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810694568.6A Active CN110656703B (en) | 2018-06-29 | 2018-06-29 | Multifunctional sliding shoe sliding post-top construction device for non-rail interface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110656703B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116692525B (en) * | 2023-08-03 | 2023-10-24 | 南通泰胜蓝岛海洋工程有限公司 | Sea wind pipe pile bidirectional transferring equipment and ship-on transferring method thereof |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03244741A (en) * | 1990-02-20 | 1991-10-31 | Harumoto Tekkosho:Kk | Method for laying member |
| CN2866438Y (en) * | 2006-02-22 | 2007-02-07 | 宝山钢铁股份有限公司 | Bidirectional self-locking hydraulic creeper |
| CN201151951Y (en) * | 2007-11-30 | 2008-11-19 | 北京市机械施工有限公司 | Full-automatic marching type reverse force support |
| CN201486155U (en) * | 2009-09-03 | 2010-05-26 | 上海同新机电控制技术有限公司 | Track self-adaptive hydraulic rail clamping device |
| CN202865994U (en) * | 2011-12-02 | 2013-04-10 | 中国建筑股份有限公司 | Numerical-control hydraulic pressure sliding construction creeprail device |
| CN102912990B (en) * | 2012-10-19 | 2015-04-22 | 中冶天工上海十三冶建设有限公司 | Sliding shoe for sliding construction of steel structure |
| CN104295101B (en) * | 2014-10-22 | 2016-03-30 | 中国建筑第八工程局有限公司 | Trussed construction slippage discharge mechanism |
| CN205100116U (en) * | 2015-10-27 | 2016-03-23 | 中铁十局集团济南铁路工程有限公司 | Device that push away is pushed up along curvilinear path |
| CN106192770B (en) * | 2016-09-20 | 2018-04-03 | 江苏京沪重工有限公司 | A kind of portable type is used for the sliding pushing tow system and its gliding method of bridge steel structural unit |
-
2018
- 2018-06-29 CN CN201810694568.6A patent/CN110656703B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110656703A (en) | 2020-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109210274B (en) | Pipe jacking pipeline butt joint device and method | |
| CN107738056B (en) | Positioning fixture for automatic welding of angle steel of civil air defense door frame | |
| CN111501574B (en) | Steel plate girder S plane linear guide-beam-free split parallel pushing construction method | |
| CN110656703B (en) | Multifunctional sliding shoe sliding post-top construction device for non-rail interface | |
| CN103982200B (en) | Slide rail Mobile steel mould trolley in tunneling boring | |
| CN210948747U (en) | Fully-mechanized mining working face two-lane circulating movable type advanced support hydraulic support | |
| CN105863710A (en) | Stepping movement type track device | |
| CN213359435U (en) | Concrete type sliding device for steel structure capable of preventing rail clamping and rail gnawing | |
| CN214834720U (en) | Tool type unilateral formwork system | |
| CN110206156B (en) | Jacking system of jacking formula building roof platform | |
| CN208203298U (en) | A kind of big punching block of rail type side wall | |
| CN102839578A (en) | Construction method for manually longitudinally moving temporary beam in reinforcing multi-track line by use of D type temporary beam | |
| CN215522211U (en) | Auxiliary tool for concrete pipe support construction | |
| CN112647976B (en) | Lining trolley for dovetail type large-section tunnel and construction method thereof | |
| CN211230300U (en) | Automatic hydraulic tongs | |
| CN203579170U (en) | Vertical column cylinder disassembly machine | |
| CN210217757U (en) | Overlength lining cutting platform truck | |
| CN109667608B (en) | Tunnel pin-connected panel secondary lining hunch portion section of jurisdiction jacking device | |
| JP3263033B2 (en) | Bridge support device for railroad work vehicle for sleeper replacement | |
| CN220432074U (en) | Auxiliary limiting frame for pouring special-shaped T beam | |
| CN205840326U (en) | A kind of stair template fixing device | |
| JP4956331B2 (en) | Bridge girder replacement method | |
| CN219449116U (en) | Derailment restorer of tunnel construction rail transport vehicle | |
| CN111996917B (en) | Use method of hinge joint reinforcing steel bar adjusting device between prefabricated hollow plate beams | |
| CN215672260U (en) | Shield tunnel seals kicking block stop device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |