CN108708549A - A kind of telescopic tubing connected fastener - Google Patents
A kind of telescopic tubing connected fastener Download PDFInfo
- Publication number
- CN108708549A CN108708549A CN201810786979.8A CN201810786979A CN108708549A CN 108708549 A CN108708549 A CN 108708549A CN 201810786979 A CN201810786979 A CN 201810786979A CN 108708549 A CN108708549 A CN 108708549A
- Authority
- CN
- China
- Prior art keywords
- retainer ring
- fastener
- box body
- tubing
- retainer
- 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.)
- Granted
Links
- 238000009434 installation Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 2
- 238000011017 operating method Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 4
- 230000007812 deficiency Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G7/00—Connections between parts of the scaffold
- E04G7/02—Connections between parts of the scaffold with separate coupling elements
- E04G7/06—Stiff scaffolding clamps for connecting scaffold members of common shape
- E04G7/20—Stiff scaffolding clamps for connecting scaffold members of common shape for ends of members only, e.g. for connecting members in end-to-end relation
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
A kind of telescopic tubing connected fastener, including box body (1), sliding rail (2), rack (3), gear (4), roll adjustment button (5), retainer ring (6), retainer ring fastener (7), retainer ring connector (8)；Sliding rail (2) is mounted on the inside of box body (1) longwell；Rack (3) is mounted on sliding rail (2)；Gear (4) and two racks (3) while engaging installation；Roll adjustment button (5) is installed with gear (4) cooperation；Retainer ring connector (8) passes through the rectangular opening (11) that the cassette bottom of box body (1) diagonally opens up, the top of the bottom and retainer ring (6) of connection rack (3)；Roll adjustment button (5) is rotated, two racks (2) drive two retainer rings (6) to be moved in the opposite direction along sliding rail (2) respectively, and the spacing between tubing end is adjusted, and realize that scalable overlap joint is fixed.The present invention is beautiful and generous, and installing and dismounting is simple, can avoid joint material waste, saves construction cost, improves construction efficiency.
Description
Technical field
The invention belongs to technical field of building construction, are related to a kind of telescopic tubing connected fastener.
Background technology
Currently, in construction projects, lightweight tubing overlaps fixed temporarily when, connector mostly uses greatly conventional method and is overlapped
It is fixed, such as using the diameter casing bigger than caliber heat or mode is bound using tied silk, these methods are often to pipe
Material end causes to damage, and the materials such as casing after hot melt do not have the value utilized again mostly, thus result in waste of resources, and
And appearance is not good enough, cannot meet aesthetic, and can not achieve when there is different overlap joint pitch requirements when tubing overlaps fixed
Overlap joint spacing is adjusted flexibly.
Invention content
In response to the problems existing in the prior art, the purpose of the present invention is to provide a kind of telescopic fixed dresses of tubing overlap joint
It sets.The present invention is beautiful and generous, it can be achieved that fixed to the overlap joint of different tube diameters, different materials tubing, and overlapping spacing can be flexible
Adjustment, meet it is different overlap joint spacing overlap joints fix require, compensate for when tubing overlaps at the construction field (site) there is deficiency；
The present invention is installed using the telescopic tubing connected fastener that is easily assembled, dismantles, dismantles simple and fast, saved labor, kept away
Exempt from joint material waste, saved construction cost, improves construction efficiency.
To achieve the above object, the technical solution adopted by the present invention is：A kind of telescopic tubing connected fastener,
It is characterized in that, including box body, sliding rail, rack, gear, roll adjustment button, retainer ring, retainer ring fastener, retainer ring connector；
It is equipped with sliding rail on the inside of two longwells of the box body, two sliding rails are mutually parallel, and in same level；In box body
Cassette bottom it is diagonal, the rectangular opening for passing through and moving left and right for retainer ring connector is offered along long side；
There are two the racks, is separately mounted on two sliding rails and keeps sawtooth opposite；
The gear is located between box body center, two racks, engages installation simultaneously with two racks, center is equipped with axis hole；
The roll adjustment button is located above box body, and sprocket drive spindle, the gear shaft lower part and tooth is arranged in bottom center vertically downward
The shaft hole matching of wheel is fixedly mounted；
There are two the retainer rings, is located at below box body, and facing each other and with box body cassette bottom is vertical, flat with two shortwalls of box body
Row, the setting of each retainer ring bottom are symmetrically arranged on the free end and pass through and fasten for retainer ring fastener there are two free end
The through-hole of retainer ring；
There are two the retainer ring connectors, is each passed through two rectangular openings, and the bottom for being located at part and rack above cassette bottom can
Dismantling connection, be located at cassette bottom below part connect with the top side detachable of retainer ring, while guarantee two retainer rings it is facing each other and
It is vertical with the cassette bottom of box body, parallel with two shortwalls of box body；
The retainer ring fastener passes through the through-hole, the free end of fastening clamping ring bottom.
Further, described two retainer ring connectors are L-shaped, and horizontal ends are located at below cassette bottom, block respectively with two
The top side detachable of circle connects, and vertical end is each passed through two rectangular openings of cassette bottom and two racks are detachably connected.
Preferably, tightening latch is provided at the top of the retainer ring vertically upward, the lower end of the tightening latch and retainer ring top are solid
Fixed connection；The retainer ring connector horizontal ends bottom center is provided with the screw thread with the tightening latch upper end cooperation installation at the top of retainer ring
Hole.
Further, the gear shaft and axis hole are fixedly mounted by pin key.
Further, box cover is additionally provided at the top of the box body, box cover is provided centrally with roll adjustment button axis hole, the roll adjustment button
It is installed by the roll adjustment button axis hole and gear cooperation.
Further, the retainer ring is arc or rectangle, and the overlap joint that can be used for arc tubing or rectangle pipe material is fixed.
Further, the retainer ring fastener includes fastening bolt and fastening nut.
Further, the fastening nut is wing nut.
Further, the box body size is：Length × width × height=300mm × 80mm × 16mm；The rack size is：It is long
× height=20mm × 10mm.
Further, it is additionally provided with liner on the inside of the retainer ring, for protecting tubing end from wearing and preventing tubing from sliding
It moves, rotation.
A kind of installation and application of telescopic tubing connected fastener of the present invention specifically includes following operation step
Suddenly.
S01, retainer ring position is adjusted：Roll adjustment button is rotated, adjusts two retainer rings to suitable position.
S02, fixed tubing：The retainer ring fastener of retainer ring bottom is unclamped, will wait that overlapping fixed tubing end is inserted into card
Circle, tightens retainer ring fastener.
S03, tubing overlap joint spacing adjustment：Roll adjustment button is rotated, two racks drive two retainer rings along sliding rail to opposite respectively
Direction movement, you can adjust the spacing between overlapped tubing end, realize that the scalable overlap joint of tubing is fixed.
S04, dismounting tubing：The retainer ring fastener of retainer ring bottom is unclamped, tubing is removed into retainer ring, tightens retainer ring fastening
Part.
S05, dismounting tubing overlap fixing component：Retainer ring is rotated, the tightening latch at the top of retainer ring is made to be detached with retainer ring connector, is blocked
Circle is detached with retainer ring connector and box body.
Beneficial effects of the present invention.
1, the technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide simple in structure, construction efficiency
A kind of telescopic tubing connected fastener and its installation and application high, that be easily installed dismounting, improve construction efficiency.
2, retainer ring of the present invention is set as rectangle or arc, and different tube diameters, different shape and different villages expects pipe material may be implemented
Overlap joint fix, the scope of application is wider.
3, the invention avoids coupling pipe elements waste of material, construction cost has been saved.
4, being adjusted flexibly for overlap joint spacing can be achieved in the present invention, and the overlap joint fixation for meeting different overlap joint spacing requires.
5, the present invention is beautiful and generous.
Description of the drawings
Fig. 1 is a kind of mounting structure schematic diagram of telescopic tubing connected fastener described in the embodiment of the present invention 1.
Fig. 2 is a kind of upward view of telescopic tubing connected fastener described in the embodiment of the present invention 2.
Fig. 3 is a kind of left view of telescopic tubing connected fastener described in the embodiment of the present invention 1.
Fig. 4 is a kind of box body, gear and the rack of telescopic tubing connected fastener described in the embodiment of the present invention 1
Vertical view.
Fig. 5 is a kind of box body of telescopic tubing connected fastener, retainer ring connector master described in the embodiment of the present invention 1
View.
Parts, position and number in figure：
1- box bodys, 11- rectangular openings, 2- sliding rails, 3- racks, 4- gears, 41- axis holes, 5- roll adjustments button, 51- gear shafts, 6- retainer rings,
The free ends 61-, 62- through-holes, 63- tightening latches, 7- retainer rings fastener, 71- fastening bolts, 72- fastening nuts, 8- retainer rings connector,
81- threaded holes, 82- slots, 9- box covers, 91- roll adjustment button axis holes.
Specific implementation mode
Technical scheme of the present invention is described in detail below in conjunction with the accompanying drawings, but present disclosure is not limited to
This.
Embodiment 1：
As shown in Fig. 1,3-5, a kind of telescopic tubing connected fastener of the invention, which is characterized in that including box body 1,
Sliding rail 2, rack 3, gear 4, roll adjustment button 5, retainer ring 6, retainer ring fastener 7, retainer ring connector 8；On the inside of 1 two longwells of the box body
It is equipped with sliding rail 2, two sliding rails 2 are mutually parallel, and in same level；It is diagonal in the cassette bottom of box body 1, it is opened up along long side
There is the rectangular opening 11 for passing through and moving left and right for retainer ring connector 8；There are two the racks 3, is separately mounted on two sliding rails 2
And keep sawtooth opposite；The gear 4 is located between 1 center of box body, two racks 3, and installation is engaged simultaneously with two racks 3,
Center is equipped with axis hole 41；The roll adjustment button 5 is located at 1 top of box body, and sprocket drive spindle 51 is arranged in bottom center vertically downward, described
51 lower part of gear shaft and the cooperation of axis hole 41 of gear 4 are fixedly mounted；There are two the retainer rings 6, is located at 1 lower section of box body, mutually just
Pair and it is vertical with the cassette bottom of box body 1, parallel with two shortwalls of box body 1, the setting of 6 bottom of each retainer ring there are two free end 61,
The through-hole 62 that simultaneously fastening clamping ring 6 is passed through for retainer ring fastener 7 is symmetrically arranged on the free end 61；The retainer ring connector 8
There are two, two rectangular openings 11 are each passed through, the part and the bottom of rack 3 above cassette bottom are detachably connected, and are located at box
The part of beneath side is connect with the top side detachable of retainer ring 6, at the same ensure two retainer rings 6 it is facing each other and with the cassette bottom of box body 1
Vertically, parallel with two shortwalls of box body 1；The retainer ring fastener 7 passes through the through-hole 62, the freedom of 6 bottom of fastening clamping ring
End 61.
Described two retainer ring connectors 8 are L-shaped, and horizontal ends are located at below cassette bottom, respectively with the top of two retainer rings 6
Portion is detachably connected, and vertical end is each passed through two rectangular openings 11 of cassette bottom 1 and two racks 3 are detachably connected.
6 top of the retainer ring is provided with tightening latch 63 vertically upward, and the lower end of the tightening latch 63 and 6 top of the retainer ring are fixed
Connection；8 horizontal ends bottom of retainer ring connector center is provided with the screw thread with 63 upper end of the tightening latch cooperation installation at 6 top of retainer ring
Hole 81.
The gear shaft 51 and axis hole 41 are fixedly mounted by pin key.
The top of the box body 1 is additionally provided with box cover 9, and box cover 9 is provided centrally with roll adjustment button axis hole 91, the roll adjustment button 5
It is installed by the roll adjustment button axis hole 91 and the cooperation of gear 4.
The retainer ring 6 is arc, and the overlap joint that can be used for arc tubing is fixed.
The retainer ring fastener 7 includes fastening bolt 71 and fastening nut 72.
The fastening nut 72 is wing nut.
1 size of the box body is：Length × width × height=300mm × 80mm × 16mm；3 size of the rack is：Long × high=
20mm×10mm。
A kind of installation and application of telescopic tubing connected fastener of the present invention specifically includes following operation step
Suddenly.
S01, retainer ring position is adjusted：Roll adjustment button 5 is rotated, adjusts two retainer rings 6 to suitable position.
S02, fixed tubing：The retainer ring fastener 7 of 6 bottom of retainer ring is unclamped, will wait that overlapping fixed tubing end is inserted into
Retainer ring 6 tightens retainer ring fastener 7.
S03, tubing overlap joint spacing adjustment：Rotate roll adjustment button 5, two racks 3 drive respectively two retainer rings 6 along sliding rail 2 to
Opposite direction movement, you can the spacing between the tubing end that adjusts that overlapped realizes that the scalable overlap joint of tubing is fixed.
S04, dismounting tubing：The retainer ring fastener 7 of 6 bottom of retainer ring is unclamped, tubing is removed into retainer ring 6, it is tight to tighten retainer ring
Firmware 7.
S05, dismounting tubing overlap fixing component：Retainer ring 6 is rotated, the tightening latch 63 at 6 top of retainer ring is made to divide with retainer ring connector 8
From retainer ring 6 is detached with retainer ring connector 8 and box body 1.
Embodiment 2：
A kind of telescopic tubing connected fastener of the present invention is on the basis of embodiment 1, and 6 inside of the retainer ring is also
It is provided with rubber packing, for protecting tubing end from wearing and preventing tubing sliding, rotation.
Its installation and application is the same as embodiment 1.
Embodiment 3：
As shown in Fig. 2, a kind of telescopic tubing connected fastener of the present invention, is card on the basis of embodiment 1
8 horizontal ends bottom of circle connector center is additionally provided with slot 82, and threaded hole 81 is located at the center of slot 82.The purpose that slot 82 is arranged is just
Tightening latch 63 in 6 top of retainer ring is installed with the cooperation of threaded hole 81.
Its installation and application is the same as embodiment 1.
The above is only presently preferred embodiments of the present invention, not to limit the present invention interest field.It is any with this
The technical solution or any technical person familiar with the field that the interest field that claim is covered is implemented utilize
The method content of the disclosure above makes the scheme of many possible changes and modifications, all belongs to the scope of protection of the present invention.
Claims (10)
1. a kind of telescopic tubing connected fastener, which is characterized in that including box body (1), sliding rail (2), rack (3), tooth
Take turns (4), roll adjustment button (5), retainer ring (6), retainer ring fastener (7), retainer ring connector (8)；
It is equipped with sliding rail (2) on the inside of (1) two longwell of the box body, two sliding rails (2) are mutually parallel, and are located at same level
On；It is diagonal in the cassette bottom of box body (1), the rectangular opening (11) for passing through and moving left and right for retainer ring connector (8) is offered along long side；
There are two the racks (3), is separately mounted on two sliding rails (2) and keeps sawtooth opposite；
The gear (4) is located at box body (1) center, between two racks (3), and two racks (3) while engaging installation, center
Equipped with axis hole (31)；
The roll adjustment button (5) is located above box body (1), and sprocket drive spindle (41), the gear is arranged in bottom center vertically downward
Axis (41) lower part and axis hole (31) cooperation of gear (4) are fixedly mounted；
There are two the retainer rings (6), is located at below box body (1), facing each other and vertical with the cassette bottom of box body (1) and box body (1)
Two shortwalls it is parallel, the setting of each retainer ring (6) bottom is symmetrically arranged on the free end (61) there are two free end (61)
The through-hole (62) of simultaneously fastening clamping ring (6) is passed through for retainer ring fastener (7)；
There are two the retainer ring connectors (8), is each passed through two rectangular openings (11), is located at the part above cassette bottom and rack
(3) bottom is detachably connected, and is located at the part below cassette bottom and is connect with the top side detachable of retainer ring (6)；
The retainer ring fastener (7) passes through the through-hole (62), the free end (61) of fastening clamping ring (6) bottom.
2. a kind of telescopic tubing connected fastener as described in claim 1, which is characterized in that described two retainer rings connect
Fitting (8) is L-shaped, and horizontal ends are located at below cassette bottom, are connect respectively with the top side detachable of two retainer rings (6), erects
Straight end is each passed through two rectangular openings (11) of cassette bottom (1) and two racks (3) are detachably connected.
3. a kind of telescopic tubing connected fastener as claimed in claim 2, which is characterized in that retainer ring (6) top
Portion is provided with tightening latch (63) vertically upward, is fixedly connected at the top of the lower end of the tightening latch (63) and the retainer ring (6)；The retainer ring
Connector (8) horizontal ends bottom center is provided with the threaded hole (81) with tightening latch (63) upper end cooperation installation at the top of retainer ring (6).
4. a kind of telescopic tubing connected fastener as described in claim 1, which is characterized in that the gear shaft (4)
It is fixedly mounted by pin key with axis hole (31).
5. a kind of telescopic tubing connected fastener as described in claim 1, which is characterized in that the box body (1)
Top is additionally provided with box cover (9), and box cover (9) is provided centrally with roll adjustment button axis hole (91), and the roll adjustment button (5) passes through the roll adjustment
Button axis hole (91) is installed with gear (4) cooperation.
6. a kind of telescopic tubing connected fastener as described in claim 1, which is characterized in that the retainer ring (6) is
Arc or rectangle.
7. a kind of telescopic tubing connected fastener as described in claim 1, which is characterized in that the retainer ring fastener
(7) include fastening bolt (71) and fastening nut (72), the fastening nut (72) is wing nut.
8. a kind of telescopic tubing connected fastener as described in claim 1, which is characterized in that box body (1) ruler
It is very little to be：Length × width × height=300mm × 80mm × 16mm；Rack (3) size is：Length × height=20mm × 10mm.
9. a kind of telescopic tubing connected fastener as described in claim 1, which is characterized in that in the retainer ring (6)
Side is additionally provided with liner.
10. a kind of application method of the telescopic tubing connected fastener described in claim 1-9, which is characterized in that packet
Include following operating procedure：
S01, retainer ring position is adjusted：Roll adjustment button is rotated, adjusts two retainer rings (6) to suitable position；
S02, fixed tubing：The retainer ring fastener (7) of retainer ring bottom is unclamped, will wait that overlapping fixed end socket of pipe fitting is inserted into retainer ring
(6), retainer ring fastener (7) is tightened；
S03, tubing overlap joint spacing adjustment：Roll adjustment button (5) is rotated, two racks (3) drive two retainer rings (6) along sliding rail respectively
(2) it moves in the opposite direction, you can adjust the spacing between overlapped tubing end, realize that the scalable overlap joint of tubing is solid
It is fixed；
S04, dismounting tubing：The retainer ring fastener (7) of retainer ring (6) bottom is unclamped, tubing is removed into retainer ring, tightens retainer ring fastening
Part (7)；
S05, dismounting tubing overlap fixing component：Retainer ring (6) is rotated, the tightening latch (63) at the top of retainer ring (6) and retainer ring connector are made
(7) it detaches, retainer ring (6) is detached with retainer ring connector (7) and box body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810786979.8A CN108708549B (en) | 2018-07-18 | 2018-07-18 | Telescopic pipe lap joint fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810786979.8A CN108708549B (en) | 2018-07-18 | 2018-07-18 | Telescopic pipe lap joint fixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108708549A true CN108708549A (en) | 2018-10-26 |
| CN108708549B CN108708549B (en) | 2024-03-08 |
Family
ID=63874965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810786979.8A Active CN108708549B (en) | 2018-07-18 | 2018-07-18 | Telescopic pipe lap joint fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108708549B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939030A (en) * | 2019-12-14 | 2020-03-31 | 成都轨道建设管理有限公司 | Pull rod structure capable of quickly adjusting track gauge and track gauge adjusting method |
| CN113958583A (en) * | 2021-11-24 | 2022-01-21 | 王立志 | Fastening piece |
| CN114214948A (en) * | 2021-12-20 | 2022-03-22 | 中铁三局集团广东建设工程有限公司 | Bridge stand column positioning device |
| CN114263344A (en) * | 2022-01-13 | 2022-04-01 | 中煤第三建设（集团）有限责任公司 | Sliding formwork platform for conical shell scaffold construction |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09165908A (en) * | 1995-12-18 | 1997-06-24 | Yoneyama Kogyo Kk | Hanger rail for movable scaffold |
| KR200408593Y1 (en) * | 2005-11-09 | 2006-02-13 | 정래진 | Fixing device for reinforcing rod union |
| CN107143133A (en) * | 2017-05-12 | 2017-09-08 | 苏州鑫飞鹰工程机械科技有限公司 | Scaffolding steel pipe joint |
| CN207067649U (en) * | 2017-07-31 | 2018-03-02 | 北京微美云息软件有限公司 | A kind of ceiling holding holography 3D projector devices |
| CN208618785U (en) * | 2018-07-18 | 2019-03-19 | 中建中新建设工程有限公司 | A kind of telescopic tubing connected fastener |
-
2018
- 2018-07-18 CN CN201810786979.8A patent/CN108708549B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09165908A (en) * | 1995-12-18 | 1997-06-24 | Yoneyama Kogyo Kk | Hanger rail for movable scaffold |
| KR200408593Y1 (en) * | 2005-11-09 | 2006-02-13 | 정래진 | Fixing device for reinforcing rod union |
| CN107143133A (en) * | 2017-05-12 | 2017-09-08 | 苏州鑫飞鹰工程机械科技有限公司 | Scaffolding steel pipe joint |
| CN207067649U (en) * | 2017-07-31 | 2018-03-02 | 北京微美云息软件有限公司 | A kind of ceiling holding holography 3D projector devices |
| CN208618785U (en) * | 2018-07-18 | 2019-03-19 | 中建中新建设工程有限公司 | A kind of telescopic tubing connected fastener |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939030A (en) * | 2019-12-14 | 2020-03-31 | 成都轨道建设管理有限公司 | Pull rod structure capable of quickly adjusting track gauge and track gauge adjusting method |
| CN113958583A (en) * | 2021-11-24 | 2022-01-21 | 王立志 | Fastening piece |
| CN113958583B (en) * | 2021-11-24 | 2024-03-01 | 河北展宇机电科技有限公司 | Fastening piece |
| CN114214948A (en) * | 2021-12-20 | 2022-03-22 | 中铁三局集团广东建设工程有限公司 | Bridge stand column positioning device |
| CN114263344A (en) * | 2022-01-13 | 2022-04-01 | 中煤第三建设（集团）有限责任公司 | Sliding formwork platform for conical shell scaffold construction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108708549B (en) | 2024-03-08 |
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