CN110026947A - A kind of tool and its application method of angle steel flange air hose fastening bolt - Google Patents
A kind of tool and its application method of angle steel flange air hose fastening bolt Download PDFInfo
- Publication number
- CN110026947A CN110026947A CN201910376711.1A CN201910376711A CN110026947A CN 110026947 A CN110026947 A CN 110026947A CN 201910376711 A CN201910376711 A CN 201910376711A CN 110026947 A CN110026947 A CN 110026947A
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- Prior art keywords
- supporting plate
- bolt
- angle steel
- drawstring
- outer sleeve
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
Abstract
The present invention relates to a kind of tools of angle steel flange air hose fastening bolt, installation for bolt, bolt includes hexagonal bolt head, including supporting plate and pressure pin, the evenly spaced card slot offered for placing bolt head and being adapted to bolt head size, the bottom of the supporting plate are hinged with the pressure pin for being used to support supporting plate on the top surface of the supporting plate.By the way that bolt to be placed in card slot, bolt is held up by supporting plate, is able to solve the fixed problem of flange blast pipe bolt at narrow space, the present invention is with high security, easy to operate and the advantages of convenient for bolt installation.
Description
Technical field
The present invention relates to the technical fields of construction, more particularly, to a kind of tool of angle steel flange air hose fastening bolt
And its application method.
Background technique
Vertical shaft is a kind of well shape pipeline that hole wall is upright.Flange blast pipe can be set in vertical shaft sometimes for changing with external world's ventilation
The effect of gas.Flange blast pipe when installing mutually is spliced to form by more piece flange blast pipe, and flange blast pipe stitching portion is provided with angle steel
Flange, it is evenly spaced on angle steel flange to offer screw hole, the flange blast pipe mutually spliced is fixed by bolt.
Existing, when flange blast pipe is installed in vertical shaft, two sides of flange blast pipe can be arranged close to the inner wall of vertical shaft,
So such situation, since space is small, can not will be located in the middle angle steel flange and be fixed using bolt when progress bolt is fixed,
Especially vertical shaft is steel plate wall or concrete walls and when wall is constructed prior to flange blast pipe, flange blast pipe close to the side of wall without
Method utilizes the case where bolt fastening more prominent.Currently, encountering such case in construction, it is usually used manually in flange blast pipe
Inner utilization sealant seals flange blast pipe stitching portion gluing.
Prior art among the above has the following deficiencies: since vertical shaft air duct is generally very long, from flange blast pipe top
It hangs people down toward flange blast pipe seam crossing to break sealant there are severe compromises, and does not meet existing construction quality accident specification
It is required that.
Summary of the invention
The first purpose of the invention is to provide a kind of tools of angle steel flange air hose fastening bolt, solve due to vertical shaft
Air duct is generally very long, hangs people from flange blast pipe top and beats sealant asking there are severe compromise down toward flange blast pipe seam crossing
Topic, with high security, it is easy to operate and convenient for bolt installation the advantages of.
Foregoing invention purpose of the invention has the technical scheme that
A kind of tool of angle steel flange air hose fastening bolt, for the installation of bolt, bolt includes hexagonal bolt head, including supporting plate
And pressure pin, the evenly spaced card offered for placing bolt head and being adapted to bolt head size on the top surface of the supporting plate
Slot, the bottom of the supporting plate are hinged with the pressure pin for being used to support supporting plate.
By using above-mentioned technical proposal, in the local mounting flange air hose of narrow space, bolt is had into bolt head
One end be placed in card slot vertically, then using pressure pin hold up supporting plate, angle steel flange supporting plate being moved at small gap
Bolt is passed through screw hole, is then fixed bolt using the fastening appliance that can be stretched out in gap by lower section, with high security,
It is easy to operate and convenient for bolt installation the advantages of.
The present invention is further arranged to: the both ends of the supporting plate are respectively arranged with drawstring, and being arranged on the drawstring can
It buckles along drawstring mobile spring, is buckled along the drawstring to supporting plate direction mobile spring, snak link can be connected to and be located at support
Supporting plate is hung on object between plate and snak link and is fixed.
By using above-mentioned technical proposal, supporting plate can temporarily be hung by snak link and drawstring and be fixed on angle steel flange
On, manpower can be saved, avoids staff from acting on always and supports supporting plate on pressure pin.
The present invention is further arranged to: the snak link includes outer sleeve, inner rod and reset spring, the outer sleeve one
End opening, the other end are closed, and sliding sleeve is equipped with inner rod in the outer sleeve, and the inner rod can not be detached from outer sleeve, described
It is provided in outer sleeve for by the reset spring of inner rod ejection outer sleeve, described reset spring one end to press against outer sleeve bottom
Portion, the other end press on the inner sleeve rod；
The perforation at left and right sides of outer sleeve is offered along horizontal direction on the side wall of the outer sleeve, the inner rod
The via hole through inner rod two sides is offered on side wall, the drawstring passes through via hole and perforation.
By using above-mentioned technical proposal, drawstring is passed through perforation and via hole makes snak link to supporting plate by inner rod is being pressed against
Direction is mobile, and when snak link is connected on angle steel flange, trip spring button, and snak link fastens on drawstring, and supporting plate is hanged
Extension is fixed on angle steel flange, can save manpower, is avoided staff from acting on always and is supported supporting plate on pressure pin.
The present invention is further arranged to: circumferentially outside sleeve inner extends to form limit for the open end of the outer sleeve
Ring, the inner rod pass through stop collar insertion outer sleeve in, in the inner rod on the side wall of the lower section of via hole circumferentially
Direction extends outward to form the annular protrusion being set in outside inner rod, and the bottom that the annular protrusion is connected to stop collar can
Inner rod is prevented to be detached from outer sleeve.
By using above-mentioned technical proposal, the bottom that annular protrusion is connected to stop collar can prevent the work in reset spring
Under, inner rod is detached from outer sleeve, and snak link is made to lose fastening effect.
The present invention is further arranged to: the pressure pin is positioned close to one end of supporting plate.
By using above-mentioned technical proposal, when pressure pin props up supporting plate, pressure pin supports one end of supporting plate, and hold in the palm supporting plate
One end far from pressure pin, moves up supporting plate, keeps supporting plate stability more preferable.
The present invention is further arranged to: cooperation, which screws the bolt use, fastening appliance, and the fastening appliance includes tight
Solid rod and the fastener head for being detachably connected on anchorage bar one end, the fastener head are offered far from one end of anchorage bar for putting
Set the holding tank of nut；The anchorage bar offers the clamping slot through anchorage bar opposite sides close to one end of fastener head, institute
The one end for stating fastener head connection anchorage bar is installed with the fixture block that can be caught in clamping slot, and the fixture block is matched with clamping slot magnetic force
It closes.
It by using above-mentioned technical proposal, is tightened, is increased from nut of the flange blast pipe upper end to lower part by anchorage bar
Big operating space, it is more convenient.
The present invention is further arranged to: the both ends of the supporting plate are offered through the hole that sockets of supporting plate upper and lower surface, described
Drawstring passes through and sockets hole and be fixed on supporting plate.
By using above-mentioned technical proposal, facilitates and socket drawstring at the both ends of supporting plate respectively.
A second object of the present invention is to provide a kind of application methods of angle steel flange air hose fastening bolt tool, including with
Lower step:
S1, bolt is placed in card slot vertically with one end of bolt head；
S2, the lower section that supporting plate is moved to flange blast pipe stitching portion angle steel flange, pressure pin, which holds up supporting plate, to be made in bolt insertion screw hole, support
Bar supports supporting plate, and drawstring is passed through to the screw hole of flange blast pipe stitching portion, and drawstring is made to pass through the screw hole on flange blast pipe top, is drawing
Snak link is installed on rope；Snak link is moved down, snak link is made to be connected to the upper surface of flange blast pipe top angle steel flange, will be held in the palm
Plate suspension fix, unclamp pressure pin, using fastening appliance by nut tightening on bolt；
S3, snak link is removed from drawstring, supporting plate is taken out from the lower section of flange blast pipe stitching portion.
By using above-mentioned technical proposal, bolt is temporarily fixed on supporting plate, bolt is then inserted into spiral shell using supporting plate
It is fixed in hole, there is simple process, easy to operate, highly-safe advantage.
The present invention is further arranged to: by pulling downward on pressure pin for supporting plate under flange blast pipe stitching portion in step S3
It takes out side.
By using above-mentioned technical proposal, operated in narrow space more convenient.
In conclusion advantageous effects of the invention are as follows:
1. bolt is temporarily fixed on supporting plate, then bolt is inserted into screw hole using supporting plate and is fixed, there is technique letter
It is single, it is easy to operate, it is highly-safe and the advantages of convenient for bolt installation；
2. can be fixed temporarily supporting plate by the way that drawstring and snak link are arranged on supporting plate, manpower is saved, work people is avoided
Member, which acts on always, supports supporting plate on pressure pin.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of protrusion supporting plate and drawbar of the invention；
Fig. 3 is the structural schematic diagram of protrusion snak link of the invention；
Fig. 4 is the cross-sectional view of snak link of the invention；
Fig. 5 is the structural schematic diagram of protrusion fastening appliance of the invention.
In figure, 1, flange blast pipe；2, angle steel flange；21, screw hole；3, bolt；31, bolt head；4, supporting plate；41, card slot；5,
Pressure pin；6, drawstring；7, snak link；71, outer sleeve；711, it perforates；712, stop collar；72, inner rod；721, via hole；722, ring
Shape protrusion；73, reset spring；8, fastening appliance；81, anchorage bar；82, fastener head；83, holding tank；84, clamping slot；85, block
Block.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Referring to Fig.1, the application is provided with what more piece was mutually spliced for installing angle steel flange air hose in vertical shaft in vertical shaft
Flange blast pipe 1, the stitching portion of 1 upper and lower ends of flange blast pipe are installed with angle steel flange 2, evenly spaced on angle steel flange 2 to open up
There is the screw hole 21 being adapted to bolt 3, bolt 3 is equipped in screw hole 21 and fixes adjacent flange blast pipe 1, bolt 3 includes fixed
Hexagonal bolt head 31 in 3 one end of bolt.
Embodiment one:
It referring to Figures 1 and 2, is a kind of tool of angle steel flange air hose fastening bolt disclosed by the invention, including supporting plate 4 and pressure pin
5, the evenly spaced card slot 41 offered for placing bolt head 31 on the top surface of supporting plate 4, between adjacent card slot 41 between
Away from identical as 21 spacing of screw hole adjacent on angle steel flange 2, card slot 41 is in regular hexagon, and size is adapted with bolt head 31.It is holding in the palm
The bottom of plate 4 is hinged with pressure pin 5, and pressure pin 5 is arranged close to one end of supporting plate 4.
It is placed in card slot 41 in use, one end by bolt 3 with bolt head 31 is vertical, rotation pressure pin 5 and supporting plate 4
Angle is at an acute angle, can be held up supporting plate 4 by pressure pin 5, when holding up supporting plate 4, one end of hand steered supporting plate 4 is cooperated to make supporting plate 4
Balance is kept, mobile pallet 4 to the lower section of angle steel flange 2 makes bolt 3 be directed at screw hole 21, moves up supporting plate 4, inserts bolt 3
Enter screw hole 21, nut is fixed on bolt 3 from the top of flange blast pipe 1 using fastening appliance 8, finally by supporting plate 4 from angle steel
It is taken out below flange 2, the bolt 3 at 2 both ends of angle steel flange is fixed.
Referring to Fig.1, due in fastening bolt 3, needing a staff to be fixed on supporting plate 4 all the time by pressure pin 5
The lower section of angle steel flange 2, more troublesome, waste of manpower are respectively arranged with drawstring 6 at the both ends of supporting plate 4, and the both ends of supporting plate 4 are opened
Equipped with hole is socketed, drawstring 6 passes through and sockets the both ends that hole is fixed at supporting plate 4.Being arranged on drawstring 6 can move along drawstring 6
Dynamic snak link 7 buckles 7 to 4 direction mobile spring of supporting plate along drawstring 6, snak link 7 can be connected to positioned at supporting plate 4 and bullet
Supporting plate 4 is hung on object between spring button 7 and is fixed.In use, the drawstring 6 that 4 both ends of supporting plate are arranged in is worn by screw hole 21
It crosses angle steel flange 2 and is placed through the screw hole 21 on 1 top of upper flange air hose straight up always, snak link 7 is set in drawing
On rope 6, drawstring 6 is tensed, 7 is buckled along 6 mobile spring of drawstring to 4 direction of supporting plate, snak link 7 is made to be connected to the top of angle steel flange 2
On end face, trip spring button 7, snak link 7 is fastened on drawstring 6, and the suspension of supporting plate 4 is fixed on angle steel flange 2.
Referring to Fig. 3 and Fig. 4, snak link 7 includes outer sleeve 71, inner rod 72 and reset spring 73,71 one end of outer sleeve
Opening, the other end are closed, and sliding sleeve is equipped with inner rod 72 in outer sleeve 71, and inner rod 72 can not be detached from outer sleeve 71, outside
The reset spring 73 that inner rod 72 is ejected to outer sleeve 71 is provided in sleeve 71,73 one end of reset spring presses against outer sleeve 71
Bottom, the other end presses against one end that inner rod 72 protrudes into outer sleeve 71.Along horizontal direction on the side wall of outer sleeve 71
The perforation 711 at left and right sides of sleeve is offered, offers the via hole through 72 two sides of inner rod on the side wall of inner rod 72
721, drawstring 6 passes through via hole 721 and perforation 711.
The open end of outer sleeve 71 circumferentially forms stop collar 712 to 71 internal stretch of outer sleeve, and inner rod 72 passes through
Stop collar 712 is inserted into outer sleeve 71, in the shape that circumferentially extends outwardly on the side wall of 721 lower section of via hole in inner rod 72
At the fixed annular protrusion 722 being set in outside inner rod 72, the bottom that annular protrusion 722 is connected to stop collar 712 can prevent
Only inner rod 72 is detached from outer sleeve 71.In use, drawstring 6 passes through perforation 711 and via hole 721, under the action of reset spring 73,
Inner rod 72 is ejected to outside outer sleeve 71, so that perforation 711 and via hole 721 is misplaced, drawstring 6 is clamped in and wears by snak link 7
At 721 occlusion of hole 711 and via hole.
In use, drawstring 6 is first passed through angle steel flange 2 by screw hole 21, supporting plate 4 is moved up, bolt 3 is made to be inserted into screw hole
In 21, and tense drawstring 6.Drawstring 6 is passed through perforation 711 and via hole 721 makes snak link 7 to supporting plate 4 by inner rod 72 is being pressed against
Direction is mobile, and when snak link 7 is connected on angle steel flange 2, trip spring button 7, and snak link 7 fastens on drawstring 6, will hold in the palm
The suspension of plate 4 is fixed on angle steel flange 2.Manpower can be saved, staff is avoided to act on support supporting plate 4 on pressure pin 5 always.
Referring to Fig. 5, fastening appliance 8 includes anchorage bar 81 and fastener head 82, and anchorage bar 81 is T-shaped, and diameter is slightly less than screw hole
21 diameter, anchorage bar 81 can pass through screw hole 21, be removably connected with fastener head 82, fastener head 82 in the lower end of anchorage bar 81
Lower end offer the holding tank 83 for placing nut, holding tank 83 is hexagonal, and size is adapted with nut.Anchorage bar 81
Bottom end offer the cuboid clamping slot 84 through 81 opposite sides of anchorage bar in the center of anchorage bar 81, in fastener head
82 one end far from holding tank 83 are installed with fixture block 85, and fixture block 85 is adapted to 84 size of clamping slot, fixture block 85 and 84 magnetic of clamping slot
Force-fitting, fixture block 85 are caught in clamping slot 84 and fastener head 82 are fixed on anchorage bar 81.
In use, nut is placed in holding tank 83, anchorage bar 81 is infused out of the top of flange blast pipe 1 screw hole 21
To down through, then fastener head 82 is fixed on anchorage bar 81, make nut be aligned bolt 3, rotation anchorage bar 81 screw spiral shell
Mother.
Embodiment two:
For a kind of application method of angle steel flange air hose fastening bolt tool provided by the invention, comprising the following steps:
S1, bolt 3 is placed in card slot 41 vertically with one end of bolt head 31 and is fixed.
S2, supporting plate 4 is held up using pressure pin 5, and one end of hand steered supporting plate 4 makes supporting plate 4 keep balance, supporting plate 4 is mobile
To assembled flange blast pipe, splice at flange blast pipe for 2 lower section of angle steel flange.Supporting plate 4 is moved to the lower section of angle steel flange 2, it will
Drawstring 6 passes through the screw hole 21 at 2 docking of angle steel flange, and snak link 7 is installed on drawstring 6, and bolt 3 is then directed at angle steel flange
The screw hole 21 of 2 stitching portions, moving up supporting plate 4 makes bolt 3 be inserted into screw hole 21.Pressure pin 5 supports supporting plate 4, tenses drawstring 6, downwards
Mobile spring button 7 makes snak link 7 be connected to the upper surface of angle steel flange 2, and supporting plate 4 is hung and is fixed, and pressure pin 5 is unclamped, using tight
Gu utensil 8 is by nut tightening on bolt 3.
S3, snak link 7 is removed from drawstring 6, by pulling downward on pressure pin 5 for supporting plate 4 under flange blast pipe stitching portion
It takes out side.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (9)
1. a kind of tool of angle steel flange air hose fastening bolt is used for the installation of bolt (3), bolt (3) includes hexagonal bolt head
(31), it is characterised in that: including supporting plate (4) and pressure pin (5), evenly spaced offer is used on the top surface of the supporting plate (4)
The card slot (41) placing bolt head (31) and being adapted to bolt head (31) size, the bottom of the supporting plate (4) are hinged with for branch
The pressure pin (5) of bracketing plate (4).
2. a kind of tool of angle steel flange air hose fastening bolt according to claim 1, it is characterised in that: the supporting plate
(4) both ends are respectively arranged with drawstring (6), and (7), edge can be buckled along drawstring (6) mobile spring by being arranged on the drawstring (6)
The drawstring (6) buckle (7) to supporting plate (4) direction mobile spring, snak link (7) can be connected to positioned at supporting plate (4) and bullet
Supporting plate (4) are hung on object between spring button (7) and are fixed.
3. a kind of tool of angle steel flange air hose fastening bolt according to claim 2, it is characterised in that: the snak link
It (7) include outer sleeve (71), inner rod (72) and reset spring (73), the outer sleeve (71) is open at one end, other end closing,
The interior sliding sleeve of the outer sleeve (71) is equipped with inner rod (72), and the inner rod (72) can not be detached from outer sleeve (71), described outer
The reset spring (73) for inner rod (72) to be ejected to outer sleeve (71), the reset spring (73) are provided in sleeve (71)
One end presses against outer sleeve (71) bottom, and the other end presses against on inner rod (72)；
The perforation at left and right sides of outer sleeve (71) is offered along horizontal direction on the side wall of the outer sleeve (71)
(711), the via hole (721) through inner rod (72) two sides is offered on the side wall of the inner rod (72), the drawstring (6)
Across via hole (721) and perforation (711).
4. a kind of tool of angle steel flange air hose fastening bolt according to claim 3, it is characterised in that: the outer sleeve
(71) open end circumferentially forms stop collar (712) to outer sleeve (71) internal stretch, and the inner rod (72) passes through limit
Position ring (712) is inserted into outer sleeve (71), in circumferentially square on the side wall of the lower section of via hole (721) on the inner rod (72)
It is set in the external annular protrusion (722) of inner rod (72) to extending outward to form, the annular protrusion (722) is connected to limit
The bottom of ring (712) can prevent inner rod (72) to be detached from outer sleeve (71).
5. a kind of tool of angle steel flange air hose fastening bolt according to claim 1, it is characterised in that: the pressure pin
(5) it is positioned close to one end of supporting plate (4).
6. a kind of tool of angle steel flange air hose fastening bolt according to claim 1, it is characterised in that: the supporting plate
(4) both ends are offered through the hole that sockets of supporting plate (4) upper and lower surface, and the drawstring (6), which passes through, to be socketed hole and be fixed on supporting plate (4)
On.
7. a kind of tool of angle steel flange air hose fastening bolt according to claim 1, it is characterised in that: cooperation screws institute
Stating bolt (3) use has fastening appliance (8), and the fastening appliance (8) includes anchorage bar (81) and is detachably connected on fastening
The fastener head (82) of bar (81) one end, the fastener head (82) offer far from the one end of anchorage bar (81) for placing nut
Holding tank (83)；The anchorage bar (81) offers the card through anchorage bar (81) opposite sides close to the one end of fastener head (82)
One end of tight slot (84), fastener head (82) connection anchorage bar (81) is installed with the fixture block that can be caught in clamping slot (84)
(85), the fixture block (85) and clamping slot (84) magnetic force cooperate.
8. a kind of application method of angle steel flange air hose fastening bolt tool, which comprises the following steps:
S1, bolt (3) are placed in card slot (41) vertically with the one end of bolt head (31)；
S2, the lower section that supporting plate (4) is moved to flange blast pipe (1) stitching portion angle steel flange (2), pressure pin (5), which holds up supporting plate (4), makes spiral shell
Bolt (3) is inserted into screw hole (21), and pressure pin (5) supports supporting plate (4), and drawstring (6) are passed through to the screw hole of flange blast pipe (1) stitching portion
(21), and drawstring (6) is made to pass through the screw hole (21) on flange blast pipe (1) top, snak link (7) is installed on drawstring (6)；To moving down
Dynamic snak link (7), make snak link (7) be connected to the upper surface of flange blast pipe (1) top angle steel flange (2), and supporting plate (4) are hung
It is fixed, unclamp pressure pin (5), using fastening appliance (8) by nut tightening on bolt (3)；
S3, snak link (7) are removed from drawstring (6), supporting plate (4) is taken out from the lower section of flange blast pipe stitching portion.
9. a kind of application method of angle steel flange air hose fastening bolt tool according to claim 8, it is characterised in that: step
Supporting plate (4) is taken out from the lower section of flange blast pipe stitching portion by pulling downward on pressure pin (5) in rapid S3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910376711.1A CN110026947B (en) | 2019-05-07 | 2019-05-07 | Tool for fastening bolt of angle steel flange air pipe and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910376711.1A CN110026947B (en) | 2019-05-07 | 2019-05-07 | Tool for fastening bolt of angle steel flange air pipe and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110026947A true CN110026947A (en) | 2019-07-19 |
| CN110026947B CN110026947B (en) | 2020-10-09 |
Family
ID=67241472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910376711.1A Active CN110026947B (en) | 2019-05-07 | 2019-05-07 | Tool for fastening bolt of angle steel flange air pipe and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110026947B (en) |
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| CN112376849A (en) * | 2020-11-30 | 2021-02-19 | 北京城建道桥建设集团有限公司 | Vertical ventilation pipe installed in narrow space and construction method |
| CN112847190A (en) * | 2020-12-31 | 2021-05-28 | 北京中瑞和电气有限公司 | Flange butt joint device of high-speed pressure relief explosion-proof valve |
| CN114413068A (en) * | 2021-12-21 | 2022-04-29 | 华北冶建工程建设有限公司 | Pipe fastening device and method |
| CN116551627A (en) * | 2023-07-11 | 2023-08-08 | 中建安装集团有限公司 | Intelligent construction device and method for vertical air duct flange bolts in narrow space |
| CN117718566A (en) * | 2024-02-08 | 2024-03-19 | 北京建工集团有限责任公司 | High-precision welding construction method for stainless steel air pipes |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112376849A (en) * | 2020-11-30 | 2021-02-19 | 北京城建道桥建设集团有限公司 | Vertical ventilation pipe installed in narrow space and construction method |
| CN112847190A (en) * | 2020-12-31 | 2021-05-28 | 北京中瑞和电气有限公司 | Flange butt joint device of high-speed pressure relief explosion-proof valve |
| CN114413068A (en) * | 2021-12-21 | 2022-04-29 | 华北冶建工程建设有限公司 | Pipe fastening device and method |
| CN114413068B (en) * | 2021-12-21 | 2024-03-08 | 华北冶建工程建设有限公司 | Pipeline fastening device and method |
| CN116551627A (en) * | 2023-07-11 | 2023-08-08 | 中建安装集团有限公司 | Intelligent construction device and method for vertical air duct flange bolts in narrow space |
| CN116551627B (en) * | 2023-07-11 | 2023-11-21 | 中建安装集团有限公司 | Intelligent construction device and method for vertical air duct flange bolts in narrow space |
| CN117718566A (en) * | 2024-02-08 | 2024-03-19 | 北京建工集团有限责任公司 | High-precision welding construction method for stainless steel air pipes |
| CN117718566B (en) * | 2024-02-08 | 2024-07-05 | 北京建工集团有限责任公司 | High-precision welding construction method for stainless steel air pipes |
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|---|---|
| CN110026947B (en) | 2020-10-09 |
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Effective date of registration: 20200706 Address after: 100000, 1, lotus road, Xicheng District, Beijing Applicant after: BEIJING CONSTRUCTION ENGINEERING GROUP Co.,Ltd. Applicant after: BCEG ROAD & BRIDGE CONSTRUCTION GROUP Co.,Ltd. Address before: 100000, 1, lotus road, Xicheng District, Beijing Applicant before: BEIJING CONSTRUCTION ENGINEERING GROUP Co.,Ltd. |
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