CN209306886U - Super large caliber helical bellows contra-aperture device - Google Patents
Super large caliber helical bellows contra-aperture device Download PDFInfo
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- CN209306886U CN209306886U CN201821933887.XU CN201821933887U CN209306886U CN 209306886 U CN209306886 U CN 209306886U CN 201821933887 U CN201821933887 U CN 201821933887U CN 209306886 U CN209306886 U CN 209306886U
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Abstract
The utility model discloses super large caliber helical bellows contra-aperture devices, belong to pipeline construction field.The utility model is by being equipped with lifting device, motor, support rod, drive rod and universal wheel；Helical bellows are oriented to by universal wheel, while reducing friction of the helical bellows in transmit process.Drive rod is matched with helical bellows carries out horizontal transmission, realizes the mobile realization Dock With Precision Position of a small range in foundation pit.Lifting device carries out the movement of up and down direction to helical bellows, realizes helical bellows Dock With Precision Position.It is additionally provided with handwheel to move left and right support rod, prevents from damaging the outer wall of pipeline when pipeline transmits.Small range movement and Dock With Precision Position in foundation pit can be effectively solved using the utility model, pipeline docking time is reduced, reduces the risk of mechanical hoisting, and the problem that difficulty is big.
Description
Technical field
The invention belongs to pipeline construction fields, are specifically related to super large caliber helical bellows contra-aperture device.
Background technique
Currently, helical bellows as a kind of novel tube, are widely used in municipal administration, house construction engineering, often because of it
The particularity of material, it is more demanding to pipe end compressed gap in nozzle connection procedure, accomplish closed butt joint as far as possible, reduces between port
Gap.In construction, since super large caliber bellows volume is big, weight is big, pipeline butt time length, difficulty are big.Along with groove
Interior counterpart working space is narrow, and pipeline butt operation needs that lifting machine lifting cooperation for a long time, merging precision is low, construction safety wind
Danger is high, cost is big.Due to the own characteristic of helical bellows, it is not easy directly to carry out forceps horizontal pulling in the trench, and pipeline nozzle
Zhou Chang great is easily deformed, and quality of connection is not easy control.Therefore it is precisely right to the progress of its pipeline butt end to be badly in need of a kind of contra-aperture device
It connects.
Docking in order to solve super large caliber helical bellows is not accurate and is unable to a small range movement, pipeline butt time
Problem long, difficulty is big, long-time lifts cooperation, construction safety risk is high, cost is big, so proposing super large caliber helical corrugation
Pipe contra-aperture device.
Summary of the invention
The technical problem to be solved by the present invention is to the docking precision in order to solve super large caliber helical bellows it is low and
It is unable to that a small range is mobile, the pipeline butt time is long, difficulty is big, lifting cooperation for a long time, construction safety risk is high, cost is big
Problem, so proposing super large caliber helical bellows contra-aperture device and application method.For realizing helical bellows Dock With Precision Position,
The effectively save counterpart time, easy to operate, operating safety factor is high, at low cost and may be reused.
To achieve the goals above, the present invention uses following scheme: super large caliber helical bellows contra-aperture device, wherein
Including support rod, lifting device, fixed plate and wheel；Middle part at the top of the fixed plate offers square groove；The square groove
Bottom surface is fixedly connected with the bottom end of lifting device；Supporting plate is fixedly connected at the top of the lifting device；It is set at the top of the supporting plate
For cambered surface, and rectangular channel is offered in the centerline of cambered surface, is rotatably connected to drive rod in the rectangular channel；The one of the supporting plate
Side wall is fixedly connected with the motor including control switch；The drive rod runs through the rear end of supporting plate and passes with the output shaft band of motor
Dynamic connection；Universal wheel is fixedly connected at left and right sides of the supporting plate cambered surface；The rear and front end of the fixed plate and middle part
First sliding groove, second sliding slot and third sliding slot are not offered；The two sides inner wall of the first sliding groove upper and lower ends opens up limited
Position slot, the limiting slot of the upper and lower ends have been movably connected with the first rack gear and the second rack gear；The second sliding slot and third are sliding
Sliding block is connected in slot；Side, second rack gear of first rack gear far from the flank of tooth side and sliding block far from the flank of tooth
Reinforcing rod is fixedly connected between support rod；The support rod in first sliding groove, second sliding slot and third sliding slot
Between be fixedly connected with connecting rod；Transmission is combined with gear between first rack gear and the second rack gear；The gear is by setting
There is transmission shaft to be fixedly connected with handwheel through the front end of fixed plate；The rear and front end of the fixed plate bottom is fixedly connected to two
A wheel.
Further, the drive rod and universal wheel are made of rubber or plastic material.
Further, the outer surface of the drive rod is helical form, and the spiral is matched with the ripple of helical bellows；Institute
It states universal wheel to match with the ripple of helical bellows, and the bottom of universal wheel is equipped with and adjusts bolt；The universal wheel at least provided with
Six, it is located at the rear and front end and middle part of supporting plate.
Further, the lifting device is equipped with two groups, is located at the rear and front end of the bottom surface of square groove；Described in every group
Lifting device includes hinge connecting rod, hydraulic cylinder and connecting column, and there are two hinge connecting rod and connecting column be all provided with；Every group of two institutes
The bottom for stating hinge connecting rod is fixedly connected with sliding sleeve；It has been respectively fixedly connected with hydraulically extensible set at left and right sides of the sliding sleeve and has consolidated
Fixed set；Running through in the fixing sleeve has connecting rod；The top of the hinge connecting rod is fixedly connected with the bottom end of corresponding connecting column.
Further, the top of connecting column described in two groups is fixedly connected with the bottom end of supporting plate, fixing sleeve described in two groups
Outer wall is fixedly connected on the bottom surface of square groove；Hydraulic cylinder described in two groups is respectively positioned between corresponding two hydraulically extensibles set.
Further, the bottom surface of the square groove is connected with rectangular box；The inner wall and connecting rod of the rectangular box
End be fixedly connected；Bearing is connected with screw rod in the middle part of the lateral wall of the rectangular box；The fixed plate is by offering spiral shell
Pit is matched with screw rod, which is fixedly connected with regulating wheel far from one end of rectangular box.
Further, the screw rod is located at the lower section of second sliding slot.
Further, the fixed plate is equipped with dial close to the one side wall of handwheel.
Further, which is set as 53 ° -80 °.
The application method of super large caliber helical bellows contra-aperture device is also disclosed in the present invention, which is characterized in that including with
Lower step:
Step 1: the helical bellows contra-aperture device is hung to bottom of foundation ditch by crane；
Step 2: tabling look-up according to the diameter of helical bellows and finding the height of handwheel corresponding scale and universal wheel, then
The adjusting bolt of adjusting handle and universal wheel is in drive rod, universal wheel and helical bellows in same circle；Then by hanging
Helical bellows are hung between support rod by vehicle；
Step 3: push the helical bellows contra-aperture device move to helical bellows that distance is installed to interface
At 50-100mm；
The support rod at left and right sides of helical bellows is displaced outwardly a distance, helical corrugation Step 4: shaking handwheel
Pipe free-falling is contacted with universal wheel and drive rod；
Step 5: opening the control switch of motor, helical bellows are sent to apart from helical bellows to interface 20-
At 30mm；
Step 6: lifting device is respectively started and adjusts regulating wheel, up and down direction and right and left are carried out to helical bellows
To adjusting, make its with to interface guarantee in error range；
Step 7: it is laid with chock in the lower section of helical bellows after the completion of docking to helical bellows, it is lasting to be driven
Its helical bellows contra-aperture device is moved backward, is laid with chock in the center position of helical bellows, chock has been laid with
Cheng Hou resets lifting device, finally releases the helical bellows contra-aperture device, completes the mating operation of helical bellows.
Compared with prior art, the present invention can obtain following technical effect:
1, device support rod and horizontal plane proposed by the present invention are set as 53-80 °, are adapted to the bellows of multiple caliber,
Also meet the requirement of the foundation pit gradient simultaneously.And supporting element is equipped with elastic layer close to the side of bellows, plays to helical bellows
Buffer function, while effectively avoid bellows with supporting element contact position stress concentrate caused by deformation or damage.
2, it is fixedly connected with lifting device and supporting plate in fixed plate in the present invention, hydraulically extensible is covered by hydraulic cylinder and is applied
Sliding sleeve is displaced outwardly by pressure, and then realizes the movement to helical bellows in the vertical direction, facilitates helical bellows perpendicular
The upward Dock With Precision Position of histogram, structure is simple, easy to operate.Reduce operation difficulty and labour cost, save pipeline docking when
Between.The problem that the operating time for effectively avoiding tradition machinery lifting from occurring is long, pipeline butt difficulty is big.
3, motor proposed by the present invention is connect with drive rod V belt translation, convenient that small model is carried out in foundation pit to helical bellows
That encloses moves horizontally, and the outer surface of drive rod is set as helical form and the ripple of helical bellows matches, and is rubber or plastics
Material product effectively reduces the abrasion of helical corrugation tube outer surface, and then can precisely hold helical bellows in the horizontal direction
On movement, realize helical bellows Dock With Precision Position, can easily be realized by start and stop motor.Thoroughly solve to helicon
The unexcellent problem of joint quality caused by line pipe tradition machinery lifts.
4, supporting plate is equipped with universal wheel made of rubber or plastics in the present invention, rises helical bellows in lifting device and lifts
Afterwards, convenient to be used cooperatively to helical bellows being defined in the lateral direction with drive rod, at the same to helical bellows into
Transmission in row horizontal direction is oriented to, and is also reduced the friction to helical bellows at the same time, is prevented helical bellows
Outer surface friction leads to the effect of plumbing that is damaged and then influencing pipeline.
5, the present invention is equipped with the first rack gear, the second rack gear, gear and handwheel, is controlled by adjusting handle to support rod
Control on direction prevents support rod in pipeline transmit process from wearing to the outer wall of pipeline, while can carry out to inside and outside
Movement so that realize adapt to plurality of specifications helical bellows.It can also be according to the diameter and support rod of pipeline and horizontal plane
Angle tables look-up and finds handwheel corresponding scale value on dial handwheel is adjusted, while adjusting universal wheel, make universal wheel,
Drive rod, support rod and pipeline matching, facilitate and be hung to helical bellows, effectively save helical bellows docking time disappears
Except when helical bellows are in conveying or docking to the security risk of construction personnel.
Super large caliber helical bellows contra-aperture device proposed by the present invention and application method, it is easy to connect and flexible, for
Field condition is adaptable, and construction tool is simple, reusable, security performance is higher and reliable, saves a large amount of construction times
It is put into mechanical equipment and personnel, greatly reduces the cost of mechanical hoisting.
Detailed description of the invention
Fig. 1 is device overall structure diagram proposed by the present invention；
Fig. 2 is the scheme of installation of A supporting plates and lifting device in Fig. 1；
Fig. 3 is handwheel proposed by the present invention and structural schematic diagram whole after the installation of the first rack gear and the second rack gear；
Fig. 4 is the sectional view in Fig. 3 at B；
Fig. 5 is the structural schematic diagram of fixed plate proposed by the present invention；
Fig. 6 is the structural schematic diagram of lifting device of the invention.
In figure: 1, helical bellows, 2, support rod, 3, wheel, 4, supporting plate, 41, universal wheel, 42, drive rod, 5, liter act dress
It sets, 51, hinge connecting rod, 52, hydraulic cylinder, 53, connecting column, 54, fixing sleeve, 55, hydraulically extensible set, 6, connecting rod, 7, fixed plate,
71, square groove, 72, second sliding slot, 73, first sliding groove, 74, third sliding slot, 8, handwheel, 9, motor, 10, sliding sleeve, 11, adjusting
Wheel.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Embodiment 1:
As shown in figures 1 to 6, super large caliber helical bellows contra-aperture device proposed by the present invention, which is characterized in that including branch
Strut 2, lifting device 5, fixed plate 7 and wheel 3.
Lifting device 5 is equipped with two groups, is located at the rear and front end of the bottom surface of square groove 72；Every group of lifting device 5 wraps
Include hinge connecting rod 51, hydraulic cylinder 52 and connecting column 53, and there are two hinge connecting rod 51 and connecting column 53 be all provided with.Every group of two hinges
The bottom of connecting rod 51 is welded and connected with sliding sleeve 10, and the left and right sides of sliding sleeve 10 has been respectively fixedly connected with hydraulically extensible set 55 and has consolidated
Surely 54 are covered, running through in sliding sleeve 10 and fixing sleeve 54 has same connecting rod, and sliding sleeve 10 can be free to slide in connecting rod.Hinge connecting rod 51
Top be bolted with the bottom end of corresponding connecting column 53.The top of two groups of connecting columns 53 connects with the bottom end bolt of supporting plate 4
It connects, the bottom surface of two groups of fixing sleeves 54 and square groove 72 is welded to connect.Two groups of hydraulic cylinders 52 are respectively positioned on corresponding two and hydraulic stretch
Between contracting set 55.Since fixing sleeve 54 is fixed on the bottom surface of square groove 72, by hydraulic cylinder 52 to hydraulically extensible set 55 apply or
Reduce pressure, and then realizes that supporting plate 4 outward or medial movement, and then is risen or fallen, and then completed to helicon by sliding sleeve 10
The adjusting of line pipe 1 in above-below direction.
The middle part of fixed plate 7 offers square groove 72, and the bottom surface of square groove 72 slidably connects rectangular box, inner wall with
The end of connecting rod is welded, and bearing is connected with screw rod 12 in the middle part of lateral wall；The screw rod 12 is through fixed plate 7 and stretches out a part,
And one end far from rectangular box is welded and connected with regulating wheel 11.By adjusting the moving left and right to screw rod 12 of regulating wheel 11, together
When it is whole to lifting device 5 carry out left and right adjusting, be finally completed the adjusting of helical bellows 1 in the lateral direction, complete spiral
The Dock With Precision Position of bellows 1.
The middle part at 4 top of supporting plate is set as cambered surface, and offers arc groove in the centerline of cambered surface, rotation in the arc groove
It is connected with drive rod 42.The one side wall of supporting plate 4 is fixedly connected with the motor 9 including control switch, and drive rod 42 runs through fixed plate 7
Rear end connect with the output shaft V belt translation of motor 9.The two sides at 4 top of supporting plate are fixedly connected to universal wheel 41, drive rod 42
It is made of rubber or plastic material with universal wheel 41.The outer surface of drive rod 42 is helical form, and the wave with helical bellows 1
Line matching, universal wheel 41 are matched with the ripple of helical bellows 1, and the bottom of universal wheel 41 is equipped with and adjusts bolt.Pass through adjusting
The lifting of universal wheel 41 may be implemented in bolt, and then realizes and cooperate between the helical bellows 1 of different size.Universal wheel 41 is set
There are 8, is located at the rear and front end and middle part of supporting plate 4.The transmission that drive rod 42 is driven by motor 9, matches with universal wheel 41
It closes using and then realizes the transmission to helical bellows 1.Solution cannot carry out a small range to spiral shell in foundation pit in the prior art
Revolve the transmission of bellows 1.
The rear and front end and middle part of fixed plate 7 offer first sliding groove 73, second sliding slot 71 and third sliding slot 74, spiral shell respectively
Bar 12 is located at the lower section of second sliding slot 71.Sliding block, the first rack gear 21 are connected in second sliding slot 71 and third sliding slot 74
Far from being fixedly connected to reinforcing rod between the side of the flank of tooth, the second side of the rack gear 22 far from the flank of tooth and sliding block and support rod 2；
Connecting rod 6 is fixedly connected between support rod 2 in first sliding groove 73, second sliding slot 71 and third sliding slot 74.First is sliding
The two sides inner wall of 74 upper and lower ends of slot 73 and third sliding slot offers limiting slot, the limiting slot of the upper and lower ends company of sliding respectively
It is connected to the first rack gear 21 and the second rack gear 22.Side and second rack gear 22 side far from the flank of tooth of first rack gear 21 far from the flank of tooth
It is welded and connected with support rod 2, which is set as 53 ° -80 °.And first rack gear 21 and corresponding support
Reinforcing rod is fixedly connected between the second rack gear 22 and corresponding support rod 2 between bar 2.First rack gear 21 and the second rack gear
Transmission is combined with gear 81 between 22, and gear 81 is fixedly connected with handwheel 8 through fixed plate 7 by being equipped with transmission shaft.Rotate hand
First rack gear 21 and the second rack gear 42 move left and right and then realize that support rod 2 moves left and right by wheel 8, prevent in spiral
Bellows 1 causes to damage during conveying to pipeline outer wall.Fixed plate 7 is equipped with dial close to the one side wall of handwheel 8.It is logical
Correspondence scale of the handwheel 8 on dial is overregulated, and then adjusts the matching of support rod 2 and helical bellows 1, prevents support rod
2 cause abrasion to cause to influence its drainage performance with the outer walls of helical bellows 1.Can also according to the diameters of helical bellows 1 and
The angle of support rod 2 and horizontal plane tables look-up and finds the corresponding scale value on dial of handwheel 8 handwheel 8 is adjusted, adjusts simultaneously
Universal wheel 41 is saved, universal wheel 41, drive rod 42, support rod 2 and helical bellows 1 are matched.The bottom surface rear and front end of fixed plate 7
It is fixedly connected to two wheels.
Embodiment 2:
The application method of super large caliber helical bellows contra-aperture device is also disclosed in the present invention, which is characterized in that including with
Lower step:
Step 1: the helical bellows contra-aperture device is hung to bottom of foundation ditch by crane；
Step 2: table look-up according to the diameter of helical bellows 1 and find the height of 8 corresponding scale and universal wheel 41 of handwheel,
Then the adjusting bolt of adjusting handle 8 and universal wheel 41 makes drive rod 42, universal wheel 41 and helical bellows 1 be in same circle
It is interior；Then helical bellows 1 are hung between support rod 2 by crane；
Step 3: push the helical bellows contra-aperture device move to helical bellows 1 that distance is installed to interface
At 50-100mm；
The support rod 2 of 1 left and right sides of helical bellows is displaced outwardly a distance, helicon Step 4: shaking handwheel
1 free-falling of line pipe is contacted with universal wheel 41 and drive rod 42；
Step 5: opening the control switch of motor 9, helical bellows 1 are sent to apart from helical bellows 1 to interface
At 20-30mm；
Step 6: lifting device 5 is respectively started and adjusts regulating wheel 11, up and down direction and a left side are carried out to helical bellows 1
The adjusting of right direction guarantees that it in error range with to interface；
Step 7: it is laid with chock in the lower section of helical bellows 1 after the completion of docking to helical bellows 1, it is lasting to pass
It is dynamic to move backward its helical bellows contra-aperture device, it is laid with chock in the center position of helical bellows 1, chock is laid with
After the completion, lifting device 5 is resetted, finally releases the helical bellows contra-aperture device, complete the docking work of helical bellows 1
Make.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (9)
1. super large caliber helical bellows contra-aperture device, which is characterized in that including support rod (2), lifting device (5), fixed plate
(7) and wheel (3)；Middle part at the top of the fixed plate (7) offers square groove (72)；The bottom surface of the square groove (72) and liter are lifted
The bottom end of device (5) is fixedly connected；Supporting plate (4) are fixedly connected at the top of the lifting device (5)；At the top of the supporting plate (4)
It is set as cambered surface, and offers rectangular channel in the centerline of cambered surface, drive rod (42) are rotatably connected in the rectangular channel；The support
The one side wall of plate (4) is fixedly connected with the motor (9) including control switch；The drive rod (42) runs through the rear end of supporting plate (4)
And it is connect with the output shaft V belt translation of motor (9)；Universal wheel is fixedly connected at left and right sides of supporting plate (4) cambered surface
(41)；It is sliding that the rear and front end and middle part of the fixed plate (7) offer first sliding groove (73), second sliding slot (71) and third respectively
Slot (74)；The two sides inner wall of first sliding groove (73) upper and lower ends offers limiting slot, the limiting slot point of the upper and lower ends
It is not connected with the first rack gear (21) and the second rack gear (22)；Activity in the second sliding slot (71) and third sliding slot (74)
It is connected with sliding block；Side of first rack gear (21) far from the side of the flank of tooth, the second rack gear (22) far from the flank of tooth and sliding block with
Support rod is fixedly connected to reinforcing rod between (2)；In first sliding groove (73), second sliding slot (71) and third sliding slot (74)
The support rod (2) between be fixedly connected with connecting rod (6)；It is driven between first rack gear (21) and the second rack gear (22)
It is combined with gear (81)；The gear (81) is fixedly connected with handwheel through the front end of fixed plate (7) by being equipped with transmission shaft
(8)；The rear and front end of fixed plate (7) bottom is fixedly connected to two wheels.
2. super large caliber helical bellows contra-aperture device according to claim 1, which is characterized in that the drive rod (42)
It is made of rubber or plastic material with universal wheel (41).
3. super large caliber helical bellows contra-aperture device according to claim 2, which is characterized in that the drive rod (42)
Outer surface be helical form, and the spiral is matched with the ripple of helical bellows (1)；The universal wheel (41) and helical bellows
(1) ripple matching, and the bottom of universal wheel (41) is equipped with and adjusts bolt；The universal wheel (41) is at least provided with six, respectively
Positioned at the rear and front end and middle part of supporting plate (4).
4. super large caliber helical bellows contra-aperture device according to claim 1, which is characterized in that the lifting device
(5) two groups are equipped with, the rear and front end of the bottom surface of square groove (72) is located at；Lifting device described in every group (5) includes hinge
Connecting rod (51), hydraulic cylinder (52) and connecting column (53), and there are two hinge connecting rod (51) and connecting column (53) be all provided with；Every group two
The bottom of the hinge connecting rod (51) is fixedly connected with sliding sleeve (10)；It has been respectively fixedly connected at left and right sides of the sliding sleeve (10)
Hydraulically extensible set (55) and fixing sleeve (54)；Running through in the fixing sleeve (54) has connecting rod；The top of the hinge connecting rod (51)
It is fixedly connected with the bottom end of corresponding connecting column (53).
5. super large caliber helical bellows contra-aperture device according to claim 4, which is characterized in that connecting column described in two groups
(53) top is fixedly connected with the bottom end of supporting plate (4), and the outer wall of fixing sleeve described in two groups (54) is fixedly connected on square groove
(72) bottom surface；Hydraulic cylinder described in two groups (52) is respectively positioned between corresponding two hydraulically extensible sets (55).
6. super large caliber helical bellows contra-aperture device according to claim 1, which is characterized in that the square groove (72)
Bottom surface be connected with rectangular box；The inner wall of the rectangular box is fixedly connected with the end of connecting rod；The rectangular box
Lateral wall in the middle part of bearing be connected with screw rod (12)；The fixed plate (7) is matched by offering threaded hole with screw rod (12), should
Screw rod (12) is fixedly connected with regulating wheel (11) far from one end of rectangular box.
7. according to super large caliber helical bellows contra-aperture device according to claim 6, which is characterized in that the screw rod
(12) it is located at the lower section of second sliding slot (71).
8. super large caliber helical bellows contra-aperture device according to claim 1, which is characterized in that the fixed plate (7)
One side wall close to handwheel (8) is equipped with dial.
9. super large caliber helical bellows contra-aperture device according to claim 1, which is characterized in that the support rod (2) with
Horizontal plane angle is set as 53 ° -80 °.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821933887.XU CN209306886U (en) | 2018-11-22 | 2018-11-22 | Super large caliber helical bellows contra-aperture device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821933887.XU CN209306886U (en) | 2018-11-22 | 2018-11-22 | Super large caliber helical bellows contra-aperture device |
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| Publication Number | Publication Date |
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| CN209306886U true CN209306886U (en) | 2019-08-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109250650A (en) * | 2018-11-22 | 2019-01-22 | 中国十七冶集团有限公司 | Super large caliber helical bellows contra-aperture device and application method |
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2018
- 2018-11-22 CN CN201821933887.XU patent/CN209306886U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109250650A (en) * | 2018-11-22 | 2019-01-22 | 中国十七冶集团有限公司 | Super large caliber helical bellows contra-aperture device and application method |
| CN109250650B (en) * | 2018-11-22 | 2024-05-03 | 中国十七冶集团有限公司 | Ultra-large diameter helical bellows aligning device and use method thereof |
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