CN207295724U - A kind of concrete deep-water device for casting - Google Patents
A kind of concrete deep-water device for casting Download PDFInfo
- Publication number
- CN207295724U CN207295724U CN201721101748.6U CN201721101748U CN207295724U CN 207295724 U CN207295724 U CN 207295724U CN 201721101748 U CN201721101748 U CN 201721101748U CN 207295724 U CN207295724 U CN 207295724U
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- Prior art keywords
- pipe
- cylindrical cabin
- wall
- rotating wheel
- guide pipe
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- Expired - Fee Related
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- 239000004567 concrete Substances 0.000 title claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 238000005266 casting Methods 0.000 title abstract 2
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 36
- 239000010959 steel Substances 0.000 claims description 36
- 238000004804 winding Methods 0.000 claims description 28
- 239000000725 suspension Substances 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 6
- 230000010412 perfusion Effects 0.000 abstract description 5
- 238000001125 extrusion Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011376 self-consolidating concrete Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Underground Or Underwater Handling Of Building Materials (AREA)
Abstract
The utility model discloses a kind of concrete deep-water device for casting, including conduit and supercharging assist system, conduit is used for concrete perfusion, supercharging assist system includes cylindrical compartment, air pump, first forcing pipe and sealing mechanism, the outside diameter of cylindrical compartment is less than the internal diameter of conduit, the bottom end closure of cylindrical compartment, top is open, and the bottom of cylindrical compartment offers the first through hole passed through for the first forcing pipe, first forcing pipe is connected with air pump, sealing mechanism is nested with the outside of cylindrical compartment, after cylindrical compartment is inserted in conduit, the sealing mechanism sealing cylinder gap between wall and pipe inner wall out of my cabin, one end of first forcing pipe provides gas pressure through first through hole for conduit.The continuous placing of concrete deep-water can be realized using the utility model by concrete extrusion excessive in conduit into compartment.
Description
Technical Field
The utility model belongs to the technical field of public road bridge beam engineering, especially, relate to a deep water concrete perfusion device.
Background
In order to meet the increasing demands of traffic channels, roads and railway bridges across rivers and seas are continuously developed, and the span is also continuously improved. The large-span bridge needs a large foundation, especially for middle and downstream areas of large rivers such as Yangtze river and yellow river with deep running water and thick silt, a steel cofferdam with the depth of dozens of meters or even hundreds of meters is needed, or a double-layer steel cylinder is directly made, and a stiffening rib is additionally arranged between two layers of steel plates. The diameter of the outer steel cylinder is from tens of meters to twenty meters, the outer steel cylinder is equally divided into a plurality of compartments, and the gap between two layers of steel plates is filled with underwater concrete, wherein the width of the gap is 1 m-2 m, and the length of each compartment is 6 m-15 m. The depth of water of tens meters or even over hectometer, the workman can't carry out the concrete vibration, but two-layer steel sheet clearance is less, and the steel sheet clearance has set up a large amount of stiffening ribs again, this has brought very big difficulty for the pouring of concrete, adopt the fabulous self-compaction concrete of mobility usually, through arranging the pipe (general diameter is about 30 cm) of bulkhead intermediate position in to the bottom transport, the pipe often will be arranged in 2m ~ 6m below the concrete top surface, prevent the perfusion in-process, mix with external moisture and enter the concrete.
However, practical experience has shown that in such high water depths, when there is no concrete or only a small amount of concrete above the pipe opening, the self-compacting concrete flows out of the pipe opening with little difficulty, but the resistance to flow from the pipe opening to both sides is so great that the concrete is deposited in a conical or elliptical cone around the pipe opening. Once the flow of concrete at the duct mouth is blocked, the pressure of the concrete descending in the duct will necessarily increase, with the result that the concrete fills only the interior of the duct. The conduit with the depth of more than one hundred meters and the inner diameter of 30cm can store 10m in the conduit3Once the conduit is filled with concrete, the concrete is difficult to smoothly flow out from the bottom of the conduit opening, and at the moment, the upper opening of the conduit is vibrated by a vibration hammer, but the effect is poor; or the guide pipe is integrally lifted, which inevitably causes discontinuity of upper and lower concrete, and seriously influences the engineering quality.
It will thus be seen that the prior art is susceptible to further improvements and enhancements.
SUMMERY OF THE UTILITY MODEL
The utility model provides a deep water concrete filling device for avoiding the defects of the prior art. The device can realize the continuous pouring of concrete and ensure the smooth pouring process.
The utility model discloses the technical scheme who adopts does:
the utility model provides a deep water concrete perfusion device, including pipe and pressure boost boosting system, the pipe is used for the perfusion concrete, pressure boost boosting system includes the cylinder cabin, the air pump, first forcing pipe and sealing mechanism, the external diameter in cylinder cabin is less than the internal diameter of pipe, the bottom in cylinder cabin is sealed, the top is uncovered, and the bottom in cylinder cabin sets up the first through-hole that supplies first forcing pipe to pass, first forcing pipe links to each other with the air pump, sealing mechanism sets up the outside in cylinder cabin, the back in the pipe is put into to the cylinder cabin, sealing mechanism seals the clearance between cylinder cabin outer wall and the pipe inner wall, the one end of first forcing pipe is passed first through-hole and is provided gas pressure for the pipe.
Sealing mechanism includes gasbag and second forcing pipe, and the gasbag cover is put in the outside in cylindrical cabin, and the one end of second forcing pipe links to each other with the air pump, sets up the second through-hole that supplies the other end of second forcing pipe to pass on the lateral wall in cylindrical cabin, back in the pipe is put into to pressure boost boosting system, the second forcing pipe passes behind the second through-hole and is linked together with the gasbag and for the gasbag supplies with gas, until the gasbag hugs closely pipe inner wall and cylindrical cabin outer wall.
The pressurization boosting system further comprises an air bag limiting mechanism, the air bag limiting mechanism comprises an upper baffle plate and a lower baffle plate, the upper baffle plate is sleeved on the outer side of the upper portion of the cylindrical cabin and fixedly connected with the outer wall of the cylindrical cabin, the lower baffle plate is sleeved on the outer side of the lower portion of the cylindrical cabin and fixedly connected with the outer wall of the cylindrical cabin, and the air bag is located between the upper baffle plate and the lower baffle plate.
After the pressurization boosting system is arranged in the guide pipe, the distance between the outer side wall of the upper baffle and the inner wall of the guide pipe opposite to the upper baffle is 3-4 mm, and the distance between the outer side wall of the lower baffle and the inner wall of the guide pipe opposite to the lower baffle is 3-4 mm.
And a first pressure gauge is arranged on the first pressurizing pipe.
And a second pressure gauge is arranged on the second pressurizing pipe.
The deepwater concrete pouring device further comprises a suspension system used for driving the pressurization boosting system to lift, the suspension system comprises a cantilever, a steel wire rope and a steel wire rope rolling and releasing mechanism, the steel wire rope rolling and releasing mechanism comprises a rope winding rotating wheel and a plurality of auxiliary rotating wheels, the rope winding rotating wheel is arranged on the cantilever, the auxiliary rotating wheels are sequentially arranged, one end of the steel wire rope is fixed on the rope winding rotating wheel, the other end of the steel wire rope passes through each auxiliary rotating wheel and then is connected with the pressurization boosting system, each auxiliary rotating wheel is rotatably connected with the cantilever, the rope winding rotating wheel is installed on the cantilever through a rotating wheel shaft, the rotating wheel shaft comprises a rotating rod and a fixing rod which are mutually connected, when the rope winding rotating wheel is located at the rotating rod, the rope winding rotating wheel rotates around the rotating rod to achieve winding and unwinding of the steel.
Since the technical scheme is used, the utility model discloses the beneficial effect who gains does:
utilize the utility model discloses can detect at any time and calculate the volume of reserving of interior concrete of pipe to in time leave too much concrete extrusion lobe with the pipe memory, in order to realize pouring in succession of concrete, the going on smoothly of guarantee engineering construction.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic partial structural view of the suspension system of the present invention.
Fig. 3 is a schematic view of the connection between the steel wire rope and the hanging ring of the present invention.
Fig. 4 is an assembly cross-sectional view of the rotating frame and the fixed frame of the present invention.
Fig. 5 is an axonometric view of the transfer axle of the present invention.
Wherein,
1. the device comprises a guide pipe 2, an upper baffle 3, an air bag 4, a lower baffle 5, a first pressure pipe 6, a second pressure pipe 71, a first hanging ring 72, a second hanging ring 8, a steel wire rope 81, a general rope 82, a branch rope 9, a first pressure gauge 10, an air pump 11, a second pressure gauge 12, a fixed frame 13, a rotating frame 131, a cylinder 14, a cantilever 15, a steel wire rope lantern ring 16, a buckle 17, a rotating wheel shaft 171, a fixed rod 172, a rotating rod 18, an auxiliary rotating wheel 19, a rope collecting rotating wheel 20, a cylinder cabin 21 and a cabin cover
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments, but the present invention is not limited to these embodiments.
As shown in fig. 1 to 5, the deepwater concrete pouring device comprises a guide pipe 1 and a pressurization boosting system, wherein the guide pipe 1 is used for pouring concrete, and the pressurization boosting system comprises a cylindrical cabin 20, an air pump 10, a first pressurization pipe 5 and a sealing mechanism. The outer diameter of the cylindrical cabin 20 is smaller than the inner diameter of the guide pipe 1, the bottom end of the cylindrical cabin 20 is closed, the top end of the cylindrical cabin 20 is open, and a first through hole for the first pressure pipe 5 to pass through is formed in the bottom end of the cylindrical cabin 20. The first pressurizing pipe 5 is connected to an air pump 10. The first pressure pipe 5 is provided with a first pressure gauge 9.
The sealing mechanism is sleeved outside the cylindrical cabin 20, after the cylindrical cabin 20 is placed in the guide pipe 1, the sealing mechanism seals a gap between the outer wall of the cylindrical cabin 20 and the inner wall of the guide pipe 1, and one end of the first pressure pipe 5 penetrates through the first through hole to provide gas pressure for the guide pipe 1. Specifically, the sealing mechanism comprises a gas bag 3 and a second pressurizing pipe 6, and the gas bag 3 is sleeved outside the cylindrical cabin 20. One end of the second pressurizing pipe 6 is connected to an air pump 10. And a second pressure gauge 11 is arranged on the second pressurizing pipe 6. A second through hole for the other end of the second pressure pipe 6 to pass through is formed on the side wall of the cylindrical cabin 20. After the pressurization boosting system is arranged in the catheter 1, the second pressurization pipe 6 penetrates through the second through hole and then is communicated with the air bag 3 and supplies air for the air bag 3 until the air bag 3 is tightly attached to the inner wall of the catheter 1 and the outer wall of the cylindrical cabin 20.
The pressurization boosting system further comprises an air bag limiting mechanism, the air bag limiting mechanism comprises an upper baffle 2 and a lower baffle 4, the upper baffle 2 is sleeved on the outer side of the upper portion of the cylindrical cabin 20 and fixedly connected with the outer wall of the cylindrical cabin 20, the lower baffle 4 is sleeved on the outer side of the lower portion of the cylindrical cabin 20 and fixedly connected with the outer wall of the cylindrical cabin 20, and the air bag 3 is located between the upper baffle and the lower baffle. The upper baffle and the lower baffle can be fixedly connected with the outer wall of the cylindrical cabin 20 in a welding mode. After the pressurization boosting system is arranged in the guide pipe 1, the distance between the outer side wall of the upper baffle plate 2 and the inner wall of the guide pipe 1 opposite to the upper baffle plate is 3-4 mm, and the distance between the outer side wall of the lower baffle plate 4 and the inner wall of the guide pipe 1 opposite to the lower baffle plate is 3-4 mm.
The deepwater concrete pouring device further comprises a suspension system for driving the pressurization boosting system to lift, the suspension system comprises a cantilever 14, a steel wire rope 8 and a steel wire rope rolling and releasing mechanism, and the steel wire rope rolling and releasing mechanism comprises a rope winding rotating wheel 19 arranged on the cantilever 14 and a plurality of auxiliary rotating wheels 18 which are sequentially arranged.
As shown in fig. 1 and 2, one end of the steel wire rope 8 is fixed on the rope winding wheel, the other end of the steel wire rope passes through each auxiliary wheel 18 and then is connected with the boosting and boosting system, and each auxiliary wheel 18 is rotatably connected with the cantilever 14. Specifically speaking: the steel wire rope 8 comprises a main rope 81 and a plurality of branch ropes 82, a hatch cover 21 fixedly connected with the cylindrical hatch 20 is arranged at the top of the cylindrical hatch 20, a third through hole for a first pressure pipe 5 to pass through and a fourth through hole for a second pressure pipe 6 to pass through are formed in the hatch cover 21, a first hanging ring 71 used for connecting the main rope 81 is fixedly connected to the top end of the hatch cover 21, one end of the main rope 81 is connected with the first hanging ring 71, and the other end of the main rope 81 is fixed on the rope collecting rotating wheel 19 after passing through each auxiliary rotating wheel 18; the top ends of the upper baffle 2, the hatch cover 21 or the cylindrical cabin 20 are uniformly provided with a plurality of second hanging rings 72 for connecting the branch ropes 28, the second hanging rings 72 are distributed at equal angles on the top ends of the upper baffle 2, the hatch cover 21 or the cylindrical cabin 20 so as to ensure the balance of the boosting and boosting system in the lifting or lowering process, the lower parts of the branch ropes 82 are connected with the second hanging rings 72, and the upper parts of the branch ropes are connected with the main rope 81. In order to avoid the reduction of the service life of the steel wire rope 8 caused by the abrasion between the main rope 81 and the first hanging ring 71 and between the branch rope 82 and the second hanging ring 72 in the lifting process, as shown in fig. 3, steel wire rope lantern rings 15 are arranged at the tail parts of the main rope 81 and the branch rope 82, the steel wire rope lantern rings 15 are sleeved on the first hanging ring and the second hanging ring, and the main rope 81 and the branch rope 82 are connected and fixed with the steel wire rope lantern rings 15 through buckles 16 shown in fig. 3.
As shown in fig. 2 and 5, the rope winding wheel 19 is mounted on the cantilever 14 through the wheel shaft 17, the wheel shaft 17 includes a rotating rod 172 and a fixing rod 171 connected to each other, when the rope winding wheel 19 is located at the rotating rod 172, the rope winding wheel 19 rotates around the rotating rod 172 to wind and unwind the steel wire rope 8, and when the rope winding wheel 19 is located at the fixing rod 171, the rope winding wheel 19 does not rotate to achieve the standing of the steel wire rope 8. Specifically speaking: receive the gyration central point of rope runner 19 and put and open and have a square through hole, the cross-section of dwang 172 is circular, and the cross-section of dead lever 171 is square, receives rope runner 19 central point and puts the internal diameter of square through hole and be greater than the external diameter of dwang 172, receives rope runner 19 central point and puts the internal diameter of square through hole and slightly be greater than the external diameter of dead lever 171 but can not rotate around dead lever 171. Therefore, when the rope winding wheel 19 is positioned on the rotating rod 172, the rope winding wheel 19 can freely rotate around the rotating rod 172; when the rope winding wheel 19 is located on the fixing rod 171, the rope winding wheel 19 does not rotate, and the rope winding wheel 19 is fixed.
As shown in fig. 1 and 4, the suspension system further includes a rotating frame 13 and a fixed frame 12 for rotating the suspension arm 14. The cantilever 14 is arranged at the top end of the rotating frame 13, and the cantilever 14 is detachably connected with the rotating frame 13. For example, a bolted connection may be used between the boom 14 and the turret 13. The rotating frame 13 is disposed on the fixed frame 12 and can rotate around the fixed frame 12, specifically, a convex cylinder 131 can be fixedly connected to the bottom of the rotating frame 13, a concave cylinder hole is disposed on the upper portion of the fixed frame 12, and the rotating frame 13 is inserted into the cylinder hole of the fixed frame 12 through the cylinder 131, so that the rotating frame 13 can rotate freely around the fixed frame 12.
When the deepwater concrete pouring device is used for pouring concrete, firstly, the boosting system is hung into the guide pipe 1 by the suspension system, then the rope retracting rotating wheel 19 is moved to the fixed rod 171, so that the position of the boosting system in the guide pipe 1 is fixed, and the air bag 3 is inflated by the air pump 10 and the second pressurizing pipe 6 until the air bag 3 is tightly attached to the inner wall of the guide pipe 1 and the outer wall of the cylindrical cabin 20; secondly, pressurizing the conduit 1 by using the air pump 10 and the first pressurizing pipe 5, calculating the volume of the concrete reserved in the conduit 1 by observing the pressure value of the first pressure gauge 9, and extruding the concrete into the compartment; after the extrusion process is finished, the rope winding rotating wheel 19 is moved to the rotating rod 172, the rope winding rotating wheel 9 is rotated to wind the steel wire rope 8, so that the boosting system is lifted out of the guide pipe 1, after the boosting system is lifted out, the rotating frame 13 is rotated to enable the boosting system to be lifted to one side of the guide pipe 1 (the concrete is not prevented from being poured into the guide pipe 1), and then the concrete is continuously poured into the guide pipe 1. And when the concrete in the conduit 1 has poor flowing, continuously repeating the steps.
The deep water concrete pouring device detects the position of concrete and extrudes the concrete through the pressure values of the first pressure pipe 5 and the first pressure gauge 9 according to the following principle: the first pressure gauge 9 is connected with the first pressure pipe 5, and the first pressure pipe 5 is communicated with the interior of the conduit 1, therefore, the pressure value detected by the first pressure gauge 9 is the pressure value in the interior of the conduit, according to the air pressure P1 input by the air pump 10 and the input volume V1, because the air temperature is the same under the environment, the air pressure in the conduit 1 can read P2 according to the first pressure gauge, then P2 is detected1V1＝P2V2The volume V of the gas in the conduit 1 can be determined2And further obtain the volume of concrete reserved in the guide pipe 1, thereby achieving the purpose of detecting the position of the concrete in the guide pipe 1. The utility model discloses a first forcing pipe 5 pressurizes pipe 1 inside, can reach the purpose to the downward extrusion of concrete in the pipe 1.
The parts not mentioned in the utility model can be realized by adopting or using the prior art for reference.
Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (7)
1. The deep water concrete pouring device is characterized by comprising a guide pipe and a pressurizing boosting system, wherein the guide pipe is used for pouring concrete, the pressurizing boosting system comprises a cylindrical cabin, an air pump, a first pressure pipe and a sealing mechanism, the outer diameter of the cylindrical cabin is smaller than the inner diameter of the guide pipe, the bottom end of the cylindrical cabin is closed, the top end of the cylindrical cabin is open, a first through hole for the first pressure pipe to pass through is formed in the bottom end of the cylindrical cabin, the first pressure pipe is connected with the air pump, the sealing mechanism is sleeved on the outer side of the cylindrical cabin, after the cylindrical cabin is placed into the guide pipe, the sealing mechanism seals a gap between the outer wall of the cylindrical cabin and the inner wall of the guide pipe, and one end of the first pressure pipe passes through the first through hole.
2. The deep water concrete pouring device according to claim 1, wherein the sealing mechanism comprises an air bag and a second pressure pipe, the air bag is sleeved outside the cylindrical cabin, one end of the second pressure pipe is connected with the air pump, a second through hole for the other end of the second pressure pipe to pass through is formed in the side wall of the cylindrical cabin, after the pressurization boosting system is placed in the guide pipe, the second pressure pipe passes through the second through hole and is communicated with the air bag and supplies air to the air bag until the air bag is tightly attached to the inner wall of the guide pipe and the outer wall of the cylindrical cabin.
3. The deep water concrete pouring device according to claim 2, wherein the pressurization boosting system further comprises an air bag limiting mechanism, the air bag limiting mechanism comprises an upper baffle plate and a lower baffle plate, the upper baffle plate is sleeved on the outer side of the upper part of the cylindrical cabin and fixedly connected with the outer wall of the cylindrical cabin, the lower baffle plate is sleeved on the outer side of the lower part of the cylindrical cabin and fixedly connected with the outer wall of the cylindrical cabin, and the air bag is positioned between the upper baffle plate and the lower baffle plate.
4. The deep water concrete pouring device according to claim 3, wherein after the pressurizing and boosting system is placed in the guide pipe, the distance between the outer side wall of the upper baffle and the inner wall of the guide pipe opposite to the upper baffle is 3-4 mm, and the distance between the outer side wall of the lower baffle and the inner wall of the guide pipe opposite to the lower baffle is 3-4 mm.
5. The deep water concrete pouring device according to claim 1, wherein a first pressure gauge is arranged on the first pressure pipe.
6. The deep water concrete pouring device according to claim 2, wherein a second pressure gauge is provided on the second pressure pipe.
7. The deep water concrete pouring device according to any one of claims 1 to 6, wherein the deep water concrete pouring device further comprises a suspension system for driving the boosting system to ascend and descend, the suspension system comprises a cantilever, a steel wire rope and a steel wire rope rolling and releasing mechanism, the steel wire rope rolling and releasing mechanism comprises a rope winding rotating wheel and a plurality of auxiliary rotating wheels which are sequentially arranged, the rope winding rotating wheel is arranged on the cantilever, one end of the steel wire rope is fixed on the rope winding rotating wheel, the other end of the steel wire rope passes through each auxiliary rotating wheel and then is connected with the boosting system, each auxiliary rotating wheel is rotatably connected with the cantilever, the rope winding rotating wheel is arranged on the cantilever through a rotating wheel shaft, the rotating wheel shaft comprises a rotating rod and a fixed rod which are connected with each other, when the rope winding rotating wheel is positioned at the rotating rod, the rope winding rotating wheel rotates around the rotating rod to realize winding and unwinding of the, the rope-retracting rotating wheel can not rotate to realize the standing of the steel wire rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721101748.6U CN207295724U (en) | 2017-08-30 | 2017-08-30 | A kind of concrete deep-water device for casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721101748.6U CN207295724U (en) | 2017-08-30 | 2017-08-30 | A kind of concrete deep-water device for casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207295724U true CN207295724U (en) | 2018-05-01 |
Family
ID=62439102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721101748.6U Expired - Fee Related CN207295724U (en) | 2017-08-30 | 2017-08-30 | A kind of concrete deep-water device for casting |
Country Status (1)
| Country | Link |
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| CN (1) | CN207295724U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107503352A (en) * | 2017-08-30 | 2017-12-22 | 青岛林川工程技术咨询有限公司 | A kind of concrete deep-water device for casting |
-
2017
- 2017-08-30 CN CN201721101748.6U patent/CN207295724U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107503352A (en) * | 2017-08-30 | 2017-12-22 | 青岛林川工程技术咨询有限公司 | A kind of concrete deep-water device for casting |
| CN107503352B (en) * | 2017-08-30 | 2022-08-23 | 青岛路桥建设集团有限公司 | Deep water concrete filling device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180501 Termination date: 20180830 |