CN216660762U - Device is put to pipeline for highway engineering - Google Patents
Device is put to pipeline for highway engineering Download PDFInfo
- Publication number
- CN216660762U CN216660762U CN202122858546.9U CN202122858546U CN216660762U CN 216660762 U CN216660762 U CN 216660762U CN 202122858546 U CN202122858546 U CN 202122858546U CN 216660762 U CN216660762 U CN 216660762U
- Authority
- CN
- China
- Prior art keywords
- block
- base plate
- buckle
- pipeline
- fixedly connected
- 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.)
- Expired - Fee Related
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 48
- 238000004804 winding Methods 0.000 claims abstract description 30
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 11
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010276 construction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
Landscapes
- Sewage (AREA)
Abstract
The utility model relates to the technical field of highway engineering equipment, in particular to a pipeline placing device for highway engineering. The technical problems that the road surface is not flat, the fixing is inconvenient, the pipeline with different thicknesses is suitable, and the fixing is not stable are solved. In order to solve the technical problems, the utility model provides a pipeline placing device for highway engineering, which mainly comprises a base plate, a clamping mechanism, a reinforcing mechanism, an adjusting mechanism and a clamping mechanism, wherein the size of the pipeline placing device can be adjusted according to different thicknesses by controlling the lengths of two hydraulic jacks, the applicability is wide, the device can adapt to bottom surfaces with different heights by controlling the overall lengths of a plurality of thread sleeves and thread columns, mobile equipment can be formed by the base plate and universal wheels, the pipeline transportation is convenient, the whole equipment is simple in structure, good in fixing effect and high in flexibility, a rope winding roller can tighten a rope to fix the pipeline by using a connecting rod, the operation is labor-saving, the pipeline is further fixed, the fixing effect is good, and the operation is simple.
Description
Technical Field
The utility model relates to the technical field of highway engineering equipment, in particular to a pipeline placing device for highway engineering.
Background
Highway engineering, which refers to the work of investigation, measurement, design, construction, maintenance, management and the like of a highway structure, and comprises the steps of trench excavation; leveling the foundation and constructing a foundation cushion; installing a pipe; constructing an open caisson; backfilling, wherein pipelines are usually placed near dug pipeline pits in engineering and are arranged in a straight line along with the road, so that the pipelines can be directly installed in the later period conveniently, the used pipelines need to be provided with pipeline placing devices, the pipelines can be placed and fixed conveniently, and accidents caused by the rolling of the pipelines are avoided.
The prior patent (publication number: CN211073557U) discloses a highway engineering pipeline placing frame, which comprises a fixing plate, wherein one side of the fixing plate is provided with a sliding groove, the inside of the sliding groove is connected with a sliding block in a sliding manner, the middle part of the top of the sliding block is fixedly connected with a first supporting column, the top of the fixing plate is fixedly connected with a second supporting column, and the outer surfaces of the first supporting column and the second supporting column are fixedly connected with a fixing column. The inventor finds that the following problems in the prior art are not solved well in the process of realizing the scheme: 1. the device is inconvenient to take and cannot adjust the clamping plate according to the thickness of the pipeline; 2. the device has poor flexibility, is very inconvenient to use and has large limitation when the road is uneven during the construction of the road; 3. the device has poor effect of fixing the pipeline, easily causes the pipeline to roll off in the moving process, damages the pipeline and even causes accidents.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a pipeline placing device for highway engineering, which solves the problem of inconvenient use due to uneven road surface in the background technology by arranging an adjusting mechanism.
In order to achieve the purpose, the utility model provides the following technical scheme: a device is put to pipeline for highway engineering, includes base plate, clamping mechanism, reinforcing mechanism, guiding mechanism and block mechanism.
Reinforcing mechanism and clamping mechanism are installed at the top of base plate, a plurality of guiding mechanism and a plurality of block mechanism are installed to the bottom of base plate.
The adjusting mechanism comprises a rotating piece, a first connecting block, a universal wheel, a threaded column and a threaded sleeve, wherein the first connecting block is installed at the bottom of the rotating piece in a rotating mode, the universal wheel is installed on the surface of one side of the first connecting block, the threaded column is fixedly connected to the center of the bottom surface of the first connecting block, and the threaded sleeve is sleeved at the bottom end of the threaded column in a rotating mode.
The clamping mechanism comprises a third connecting block, a first semi-ring block, a second semi-ring block, a first clamping block and a second clamping block, the bottom end of the third connecting block is fixedly connected with the first semi-ring block, the bottom of the first semi-ring block is hinged with the second semi-ring block, the bottom surface of one end of the first semi-ring block is fixedly connected with the first clamping block, and the top surface of one end of the second semi-ring block is fixedly connected with the second clamping block.
Clamping mechanism includes hydraulic buffer, hydraulic ram, dwang, side splint and end backing block, the top fixedly connected with hydraulic buffer of base plate, the both sides that the top of base plate is close to hydraulic buffer all rotate and install the dwang, two the equal fixed mounting in a side surface top that the dwang is close to hydraulic buffer has the side splint, one side that the base plate is close to two dwang all rotates installs the hydraulic ram, two the one end that the base plate was kept away from to the hydraulic ram rotates respectively and installs a side surface at two dwang of correspondence.
Reinforcing mechanism includes knot piece, axis of rotation, support frame, wire winding roller and teeth of a cogwheel buckle, the top fixed mounting of base plate has knot piece and two support frames, two the support frame rotates and installs the axis of rotation, the fixed cover has connect the wire winding roller in the axis of rotation, a side surface top fixed mounting of support frame has the second connecting block, rotate on the second connecting block and install the teeth of a cogwheel buckle, the equidistance is equipped with a plurality of teeth of a cogwheel on the wire winding roller, the teeth of a cogwheel meshing on the teeth of a cogwheel buckle is connected on the wire winding roller.
Preferably, the bottom surface fixedly connected with of base plate rotates a plurality of pieces, and is a plurality of rotate the piece and be the rectangle distribution, the equal fixed mounting in both sides surface central point of base plate puts and pulls the piece.
Preferably, a first handle is fixedly connected to the outer surface of one side wall of the threaded sleeve, a limiting plate is fixedly connected to the surface of the bottom end of the threaded sleeve, and a fixing needle is fixedly mounted at the bottom of the limiting plate.
Preferably, a bolt hole is formed between the first buckling block and the second buckling block, and a clamping bolt is inserted and installed in the bolt hole.
Preferably, a bottom support block is fixedly installed at the top end of the hydraulic buffer, and rubber pads are fixedly installed on the bottom support block and one side surfaces of the two side clamping plates.
Preferably, install the torsional spring on the teeth of a cogwheel buckle, one side fixed surface of teeth of a cogwheel buckle has the third handle, one side fixed surface of second connecting block is close to the top fixed mounting of third handle and is stopped the piece.
Preferably, one end of the rotating shaft penetrates through one side plate of the supporting frame and is provided with a plurality of circular insertion holes, connecting rods are movably inserted into the circular insertion holes, and a second handle is fixedly mounted at one end, far away from the rotating shaft, of each connecting rod.
Preferably, a rope is fixedly wound on the rope winding roller, and one end, far away from the rope winding roller, of the rope is fixedly installed on the rope buckle block.
Compared with the prior art, the utility model has the beneficial effects that:
(1) the clamping mechanism is arranged, the two rotating rods are controlled to push the side clamping plates to clamp the pipeline by controlling the lengths of the two hydraulic jacks, the size of the pipeline can be adjusted according to different thicknesses of the pipeline, the clamping force is controlled by the hydraulic jacks, and the applicability is wide;
(2) the pipeline traction device is provided with the adjusting mechanism, the overall length of the plurality of thread sleeves and the thread columns is controlled by rotating the first handle, the pipeline traction device is suitable for bottom surfaces with different heights, when the pipeline traction device needs to move, the pipeline is lifted by the aid of auxiliary crane equipment, the rotary thread sleeves are clamped between the first semi-ring block and the second semi-ring block and fixed by the clamp bolts, the base plate and the universal wheels form movable equipment, the pipeline transportation is facilitated, the whole equipment is simple in structure, good in fixing effect and high in flexibility, and the traction device can be connected with the external traction equipment to move the pipeline through the traction piece;
(3) the reinforcing mechanism is arranged, the connecting rod is inserted into the insertion hole in the rotating shaft, the rope is sleeved on a pipeline to be reinforced, the connecting rod is rotated through the second handle, the connecting rod drives the rotating shaft to rotate, the rope winding roller tightens the rope, the gear teeth buckle is clamped with the rope winding roller under the action of the torsion spring, the rope winding roller cannot loosen the rope, when the connecting rod rotates to the bottom and cannot rotate continuously, the connecting rod is drawn out to replace the circular insertion hole in the top of the support frame to rotate continuously, and the lever type rope winding mechanism is labor-saving in operation due to the lever principle, further reinforces the fixation of the pipeline, and is good in fixing effect and simple in operation.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic front view of the clamping mechanism of the present invention;
FIG. 3 is a schematic top view of the reinforcement mechanism of the present invention;
FIG. 4 is a left side view of the engaging mechanism of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 1A;
fig. 6 is a schematic view of a portion of the enlarged structure at B in fig. 3 according to the present invention.
In the figure: 1. a base plate; 2. a rotating member; 3. a universal wheel; 4. a first connection block; 5. a threaded post; 6. a first handle; 7. a threaded sleeve; 8. a fixing pin; 9. a traction member; 10. a support frame; 11. a rotating shaft; 12. a gear tooth buckle is arranged; 13. a second handle; 14. a connecting rod; 15. a third handle; 16. a second connecting block; 17. a rope winding roller; 18. a bottom support block; 19. a rubber pad; 20. a side clamping plate; 21. rotating the rod; 22. A hydraulic buffer; 23. a rope; 24. a hydraulic jack; 25. a rope buckle block; 26. a limiting plate; 27. a first semi-ring block; 28. a third connecting block; 29. a first buckle block; 30. a second buckle block; 31. fastening a bolt; 32. a second half ring block; 33. a torsion spring; 34. a stop block.
Detailed Description
Referring to fig. 1-6, an embodiment of the present invention is shown: a device is put to pipeline for highway engineering, includes base plate 1, clamping mechanism, reinforcing mechanism, guiding mechanism and block mechanism.
Reinforcing mechanism and clamping mechanism are installed at the top of base plate 1, and a plurality of guiding mechanism and a plurality of block mechanism are installed to the bottom of base plate 1, can select to be four.
Guiding mechanism is including rotating piece 2, first connecting block 4, universal wheel 3, screw thread post 5 and thread bush 7, rotates the bottom of piece 2 and rotates and install first connecting block 4, and one side surface mounting of first connecting block 4 has universal wheel 3, and fixedly connected with screw thread post 5 is located at the bottom surface center of first connecting block 4, and the screw thread bush 7 has been cup jointed in the bottom rotation of screw thread post 5.
The clamping mechanism comprises a third connecting block 28, a first semi-ring block 27, a second semi-ring block 32, a first clamping block 29 and a second clamping block 30, the bottom end of the third connecting block 28 is fixedly connected with the first semi-ring block 27, the bottom of the first semi-ring block 27 is hinged with the second semi-ring block 32, the bottom surface of one end of the first semi-ring block 27 is fixedly connected with the first clamping block 29, and the top surface of one end of the second semi-ring block 32 is fixedly connected with the second clamping block 30.
Clamping mechanism includes hydraulic buffer 22, hydraulic ram 24, dwang 21, side splint 20 and collet piece 18, the top fixedly connected with hydraulic buffer 22 of base plate 1, the both sides that the top of base plate 1 is close to hydraulic buffer 22 are all rotated and are installed dwang 21, the equal fixed mounting in a side surface top that two dwang 21 are close to hydraulic buffer 22 has side splint 20, one side that base plate 1 is close to two dwang 21 is all rotated and is installed hydraulic ram 24, the one end that base plate 1 was kept away from to two hydraulic rams 24 rotates respectively and installs a side surface at two dwang 21 of correspondence.
Reinforcing mechanism includes knot piece 25, axis of rotation 11, support frame 10, wire winding roller 17 and teeth of a cogwheel buckle 12, the top fixed mounting of base plate 1 has knot piece 25 and two support frames 10, two support frames 10 rotate and install axis of rotation 11, the fixed cover has connect wire winding roller 17 in the axis of rotation 11, a side surface top fixed mounting of support frame 10 has second connecting block 16, rotate on the second connecting block 16 and install teeth of a cogwheel buckle 12, equidistant a plurality of teeth of a cogwheel that are equipped with on the wire winding roller 17.
Specifically, the bottom surface fixedly connected with of base plate 1 rotates a plurality of pieces 2, and a plurality of pieces 2 that rotate are the rectangle and distribute.
Specifically, a first handle 6 is fixedly connected to the outer surface of one side wall of the threaded sleeve 7, a limiting plate 26 is fixedly connected to the bottom end surface of the threaded sleeve 7, a fixing needle 8 is fixedly mounted at the bottom of the limiting plate 26, and the fixing needle 8 is convenient to insert into the bottom surface of the construction section, so that stability is improved.
Specifically, a latch hole is formed between the first buckling block 29 and the second buckling block 30, a clamping bolt 31 is inserted and installed in the latch hole, and the first buckling block 29 and the second buckling block 30 are conveniently clamped through the clamping bolt 31.
Specifically, the top end of the hydraulic buffer 22 is fixedly provided with a bottom support block 18, one side surfaces of the bottom support block 18 and the two side clamping plates 20 are respectively and fixedly provided with a rubber pad 19, and the surface of the pipeline is protected from being damaged when being clamped through the rubber pads 19.
Specifically, the surface center positions of the two sides of the base plate 1 are fixedly provided with traction pieces 9, and the traction pieces 9 are externally connected with equipment to facilitate movement.
Specifically, a torsion spring 33 is mounted on the gear tooth buckle 12, a third handle 15 is fixedly mounted on one side surface of the gear tooth buckle 12, and a stop block 34 is fixedly mounted on one side surface of the second connecting block 16 close to the top of the third handle 15.
Specifically, one end of the rotating shaft 11 runs through a side plate of the support frame 10 and is provided with a plurality of circular jacks, the connecting rod 14 is movably inserted into each circular jack, the connecting rod 14 is far away from one end of the rotating shaft 11 and is fixedly provided with a second handle 13, the connecting rod 14 is rotated through the second handle 13, and the rope winding roller 17 is rotated and tightened through the switching of the circular jacks.
Specifically, a rope 23 is fixedly wound on the rope winding roller 17, one end of the rope 23 far away from the rope winding roller 17 is fixedly installed on the rope buckle block 25, and the pipeline is reinforced through the rope 23.
Specifically, the gear teeth on the rope winding roller 17 are meshed with the gear teeth on the gear teeth buckle 12, and the gear teeth on the rope winding roller 17 are meshed with the gear teeth on the gear teeth buckle 12, so that the gear teeth buckle 12 fixes the rope winding roller 17 and cannot be loosened.
The hydraulic jack 24 in the application is externally connected with a hydraulic source, when the device for placing the pipelines for the highway engineering is used, the number of the device is increased according to the length of the pipelines, generally at least two hydraulic jacks are needed, the first handle 6 is respectively rotated according to different field conditions, the overall length of the plurality of thread sleeves 7 and the thread columns 5 is controlled, the device is suitable for bottom surfaces with different heights, the two rotating rods 21 are controlled to push the side clamping plates 20 to clamp the pipelines by controlling the length of the two hydraulic jacks 24, the size can be adjusted according to pipelines with different thicknesses, the applicability is wide, the connecting rod 14 is inserted into the jack on the rotating shaft 11, the pipelines needing to be reinforced are sleeved with the rope 23, the connecting rod 14 is rotated by the second handle 13, the connecting rod 14 drives the rotating shaft 11 to rotate, the rope winding roller 17 tightens up the rope 23, the gear tooth buckle 12 is clamped with the rope winding roller 17 under the action of the torsion spring 33, and the rope winding roller 17 cannot loosen the rope 23, when the connecting rod 14 rotates to the bottom and can not continue to rotate, take out the connecting rod 14 and change the circular jack at the top of the support frame 10 and continue to rotate, because of the lever principle, the operation is comparatively laborsaving, further strengthen the fixed of pipeline, it is fixed effectual, the operation is simple, when needing to remove, through supplementary loop wheel equipment, lift up the pipeline, rotatory thread bush 7 block is between first semi-ring piece 27 and second semi-ring piece 32, it is fixed through the trip 31, movable equipment has been constituteed with the universal wheel 3 to base plate 1, be convenient for the transportation of pipeline, whole equipment structure is simple, it is fixed effectual, the flexibility is high, can remove the pipeline through the external tractive equipment of tractive piece 9.
Claims (10)
1. The utility model provides a device is put to pipeline for highway engineering which characterized in that: comprises a base plate, a clamping mechanism, a reinforcing mechanism, an adjusting mechanism and a clamping mechanism;
the top of the base plate is provided with a reinforcing mechanism and a clamping mechanism, and the bottom of the base plate is provided with a plurality of adjusting mechanisms and a plurality of clamping mechanisms;
the adjusting mechanism comprises a rotating piece, a first connecting block, a universal wheel, a threaded column and a threaded sleeve, wherein the first connecting block is rotatably installed at the bottom of the rotating piece, the universal wheel is installed on the surface of one side of the first connecting block, the threaded column is fixedly connected to the center of the bottom surface of the first connecting block, and the threaded sleeve is rotatably sleeved at the bottom end of the threaded column;
clamping mechanism includes hydraulic buffer, hydraulic ram, dwang, side splint and end backing block, the top fixedly connected with hydraulic buffer of base plate, the both sides that the top of base plate is close to hydraulic buffer all rotate and install the dwang, two the equal fixed mounting in a side surface top that the dwang is close to hydraulic buffer has the side splint, one side that the base plate is close to two dwang all rotates installs the hydraulic ram, two the one end that the base plate was kept away from to the hydraulic ram rotates respectively and installs a side surface at two dwang of correspondence.
2. The pipe placement device for road engineering of claim 1, wherein: the clamping mechanism comprises a third connecting block, a first semi-ring block, a second semi-ring block, a first buckle block and a second buckle block, the bottom end of the third connecting block is fixedly connected with the first semi-ring block, the bottom of the first semi-ring block is hinged with the second semi-ring block, the bottom surface of one end of the first semi-ring block is fixedly connected with the first buckle block, and the top surface of one end of the second semi-ring block is fixedly connected with the second buckle block.
3. The pipe placement device for road engineering of claim 1, wherein: reinforcing mechanism includes knot piece, axis of rotation, support frame, wire winding roller and teeth of a cogwheel buckle, the top fixed mounting of base plate has knot piece and two support frames, two the support frame rotates and installs the axis of rotation, the fixed cover has connect the wire winding roller in the axis of rotation, a side surface top fixed mounting of support frame has the second connecting block, rotate on the second connecting block and install the teeth of a cogwheel buckle, the equidistance is equipped with a plurality of teeth of a cogwheel on the wire winding roller, the teeth of a cogwheel meshing on the teeth of a cogwheel buckle is connected on the wire winding roller.
4. The pipe placement device for road engineering of claim 1, wherein: the bottom surface fixedly connected with of base plate rotates a plurality of pieces, and is a plurality of rotate the piece and be the rectangle distribution, the both sides surface central point of base plate puts equal fixed mounting and pulls the piece.
5. The pipe placement device for road engineering of claim 1, wherein: the outer surface of one side wall of the threaded sleeve is fixedly connected with a first handle, the bottom end surface of the threaded sleeve is fixedly connected with a limiting plate, and the bottom of the limiting plate is fixedly provided with a fixing needle.
6. The pipe placement device for road engineering of claim 2, wherein: a bolt hole is formed between the first buckling block and the second buckling block, and a clamping bolt is inserted and installed in the bolt hole.
7. The pipe placement device for road engineering of claim 1, wherein: the hydraulic buffer is characterized in that a bottom support block is fixedly arranged at the top end of the hydraulic buffer, and rubber pads are fixedly arranged on the bottom support block and one side surfaces of the two side clamping plates.
8. The pipe placement device for road engineering of claim 3, wherein: install the torsional spring on the teeth of a cogwheel buckle, one side fixed surface of teeth of a cogwheel buckle installs the third handle, one side fixed surface of second connecting block is close to the top fixed mounting of third handle and has the stopper.
9. The pipe placement device for road engineering of claim 3, wherein: one end of the rotating shaft penetrates through one side plate of the supporting frame and is provided with a plurality of circular insertion holes, connecting rods are movably inserted into the circular insertion holes, and a second handle is fixedly arranged at one end, far away from the rotating shaft, of each connecting rod.
10. The pipe placing device for road engineering as claimed in claim 3, wherein: the rope is fixedly wound on the rope winding roller, and one end, far away from the rope winding roller, of the rope is fixedly installed on the rope buckle block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122858546.9U CN216660762U (en) | 2021-11-19 | 2021-11-19 | Device is put to pipeline for highway engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122858546.9U CN216660762U (en) | 2021-11-19 | 2021-11-19 | Device is put to pipeline for highway engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216660762U true CN216660762U (en) | 2022-06-03 |
Family
ID=81784370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122858546.9U Expired - Fee Related CN216660762U (en) | 2021-11-19 | 2021-11-19 | Device is put to pipeline for highway engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216660762U (en) |
-
2021
- 2021-11-19 CN CN202122858546.9U patent/CN216660762U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111620258A (en) | A pipe laying fixing device for hydraulic and hydroelectric engineering | |
| CN213655896U (en) | Jacking device for river-crossing and pipe-jacking construction of prestressed steel cylinder concrete pipe | |
| CN216660762U (en) | Device is put to pipeline for highway engineering | |
| CN114753871A (en) | Tunnel secondary lining longitudinal water stop belt mounting device and mounting method thereof | |
| CN101713253A (en) | Prestressed carbon cloth reinforced tensioner | |
| CN110743987B (en) | Steel wire rope straightening and maintaining device | |
| CN217603498U (en) | Combined pipeline mounting tool | |
| CN113503170B (en) | Positioning and forming integrated machine for tunnel arch-shaped steel bars | |
| CN215160846U (en) | Plateau belt pumping unit moves quick-witted device | |
| CN215974573U (en) | Adjustable lifting appliance for lifting template | |
| CN111064115B (en) | Rod porcelain insulator replacing device | |
| CN210827442U (en) | Pile construction equipment under soft basic road surface | |
| CN219912035U (en) | Pipeline burying structure | |
| CN219754114U (en) | Building wall body reinforcing apparatus that rectifies | |
| CN220953389U (en) | Precast pile hammering device for prefabricated frame jacking construction | |
| CN219712564U (en) | Concrete spigot-and-socket pipe installation fastening device | |
| CN217894970U (en) | Crane upright post reinforcing device | |
| CN219586858U (en) | Municipal administration outer network drainage pipe engineering backfills and props device in advance | |
| CN214006581U (en) | Longitudinal bar reinforcing structure convenient to install | |
| CN220245333U (en) | Quick installation device of pipeline | |
| CN216863404U (en) | Hydraulic opening and closing device for box culvert and pipe gallery | |
| CN215971680U (en) | Novel concrete drain pipe transports device | |
| CN116289911B (en) | Reinforcing bearing method for tubular pile | |
| CN216892732U (en) | Quick restoration formwork device of drain pipe | |
| CN220452923U (en) | Pipeline tensioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220603 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |