CN110656910B - Slip casting connector - Google Patents
Slip casting connector Download PDFInfo
- Publication number
- CN110656910B CN110656910B CN201911013148.8A CN201911013148A CN110656910B CN 110656910 B CN110656910 B CN 110656910B CN 201911013148 A CN201911013148 A CN 201911013148A CN 110656910 B CN110656910 B CN 110656910B
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- Prior art keywords
- grouting
- slip casting
- head
- pipe
- connector
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- 238000007569 slipcasting Methods 0.000 title claims abstract description 88
- 238000006073 displacement reaction Methods 0.000 claims abstract description 8
- 239000003638 chemical reducing agent Substances 0.000 claims description 5
- 239000004519 grease Substances 0.000 description 17
- 235000014121 butter Nutrition 0.000 description 10
- 210000000078 claw Anatomy 0.000 description 10
- 210000002445 nipple Anatomy 0.000 description 9
- 238000004804 winding Methods 0.000 description 8
- 239000002002 slurry Substances 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 238000003032 molecular docking Methods 0.000 description 3
- 241000309551 Arthraxon hispidus Species 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention discloses a slip casting connector, comprising: the grouting device comprises a grouting pipe, a grouting machine connector and a connecting head, wherein one end of the grouting pipe is provided with the grouting machine connector, and the other end of the grouting pipe is provided with the connecting head which is used for connecting the grouting head; the slip casting outside of managing is located to sleeve subassembly, sleeve subassembly rotationally the cover, and can follow the axial displacement of slip casting pipe, including fixed connection's box spanner and sleeve pipe, along sleeve subassembly's axial, box spanner's terminal surface surpasss the terminal surface of connecing the head. The connector for grouting can be used for grouting operation of deep hole operation, and is more durable while realizing high-pressure large-flow grouting.
Description
Technical Field
The invention belongs to the field of grouting, and particularly relates to a connector for grouting.
Background
The traditional slip casting connector mainly comprises a grease head, and generally comprises a lower fixed sleeve, a gasket, a spring, a rubber pad, a fixed seat, a claw piece and an upper fixed sleeve; the upper fixing sleeve is internally provided with a conical hole, and the four claw sheets surround the fixing seat and are constrained in the inner conical hole of the upper fixing sleeve; the hollow rubber pad passes through the inner hole of the fixed seat to tightly press the hollow rubber pad under the action of the spring, so that the four claw sheets of the fixed seat are attached to the inner taper hole of the upper fixed sleeve to form a complete ring. When the grease filling machine is used, a grease nozzle of a grouting head is extruded into four claw sheets of a grease head, the claw sheets push the fixed seat compression spring under the extrusion of the grease nozzle, so that the four claw sheets are separated from the inner taper hole of the upper fixed sleeve, and the four claw sheets are opened to form a complete ring, so that the grease nozzle is directly pressed on the rubber pad through the claw sheets; when the grease nipple continues to extrude the rubber pad to contract, the four claw pieces are tightened along the inverted cone of the grease nipple due to the inverted cone structure of the grease nipple, the inverted cone of the grease nipple is firmly grasped, and the grease nipple and the rubber pad are tightly attached to form a closed grouting loop.
The connector for grouting forms a closed grouting loop by elastic compaction of a rubber pad in a grease head and a grease nipple, and generally the grouting pressure in the loop is about 0.3Mpa, so that high-pressure large-flow grouting cannot be realized; the rubber pad in the butter head can be damaged for a long time under the pressure impact of the slurry; chemical components in the slurry have a corrosive effect on the rubber pad, the damage of the rubber pad is also aggravated, and the butter head needs to be frequently disassembled to replace the rubber pad; the butter head and the grease nipple can be connected straightly when being connected, but because the four claw sheets in the butter head are extruded by the spring and the rubber mat, the inverted cone of the grease nipple is firmly grasped, the butter head can not be pulled out straightly when being disassembled, the butter head can be pulled out only by shaking the butter head in a large range, and the butter head is not suitable for operation in a deep hole and can only be used on an exposed traditional grouting needle head.
Therefore, a slip casting adapter that can be used for deep hole drilling and that can achieve high-pressure high-flow slip casting and is more durable is desired.
Disclosure of Invention
The invention aims to provide a connector for grouting, which solves the problems that a larger moving space is required during disassembly due to a connection locking mode of a grease head and a grease nipple when the traditional connector for grouting is used, the connector is only suitable for a traditional grouting head exposed on the surface of concrete and is not suitable for operation in a deep hole, and the connector is more durable while high-pressure large-flow grouting is realized.
In order to achieve the above object, the present invention provides a slip casting connector, comprising:
the grouting device comprises a grouting pipe, a grouting machine connector and a connecting head, wherein one end of the grouting pipe is provided with the grouting machine connector, the other end of the grouting pipe is provided with the connecting head, and the connecting head is used for connecting the grouting head;
the sleeve assembly, the sleeve assembly rotationally overlaps and locates the slip casting pipe is outside, and can follow the axial displacement of slip casting pipe, including fixed connection's box spanner and sleeve pipe, follow the axial of sleeve assembly, box spanner's terminal surface surpasses the terminal surface of connecing the head.
Preferably, connect the inside annular baffle that is equipped with of head, be equipped with the screw thread on the inner wall of head, the screw thread be used for with screw-thread fit on the first outer wall of slip casting works as connect the head with the slip casting head passes through during threaded connection, the tip of slip casting head inserts in annular baffle's the centre bore.
Preferably, the one end of slip casting pipe pass through slip casting pipe cap with slip casting machine joint connection, the slip casting pipe cap is equipped with the through-hole, the through-hole with slip casting pipe with slip casting machine connects the intercommunication.
Preferably, the grouting machine joint comprises a reducing joint and a pagoda joint, the small-diameter end of the pagoda joint is used for being connected to the grouting machine, and the large-diameter end of the pagoda joint is connected to the grouting pipe cover through the reducing joint.
Preferably, the grouting machine joint further comprises an anti-winding joint, and the pagoda joint is connected to the reducer union through the anti-winding joint.
Preferably, the grouting machine joint further comprises a ball valve, and the ball valve is arranged between the pagoda joint and the anti-winding joint.
Preferably, the sleeve assembly further comprises a sleeve cover and a hand wheel, the sleeve cover is sleeved on the grouting pipe cover and fixedly connected to the sleeve pipe, the hand wheel is sleeved on the sleeve cover, and the hand wheel can drive the sleeve cover to rotate.
Preferably, the sleeve cover is in threaded connection with the hand wheel and the sleeve pipe, and the sleeve cover can move along the axial direction of the grouting pipe cover.
Preferably, still include the first oilless bush, the first oilless bush is established locate the outer wall of connector head with between the inner wall of sleeve subassembly.
Preferably, the grouting pipe cover further comprises a second oilless bushing which is arranged between the outer wall of the grouting pipe cover and the sleeve pipe.
The invention has the beneficial effects that:
1. the connector adopts a double-sleeve design, a grouting pipe is arranged inside the connector, a sleeve pipe connected with a socket wrench is sleeved outside the connector, the connector is connected to a grouting head through a connecting head of the grouting pipe, the sleeve pipe is moved along the axial direction of the grouting pipe, the socket wrench is sleeved on a nut on the outer wall of the grouting head, a deep grouting head can be sent into a deep hole, the sleeve pipe is rotated to drive the sleeve wrench to rotate the nut, a rubber ring on the grouting head is extruded, the outer diameter of the rubber ring is expanded to fix the grouting head in the grouting hole, and the connector is convenient to operate and suitable for deep hole operation;
2. the outer walls of the connecting head and the grouting head are in threaded connection, after grouting is completed, the connecting head and the grouting head can be disconnected only by rotating the grouting pipe anticlockwise, the grouting connector is taken out along a straight line, the connector does not need to be rotated greatly, and the grouting connector is suitable for deep hole operation; the design of elastic connection of a butter head type rubber cushion is replaced, a hard connection mode of locking a grouting head by threads is directly adopted, an annular baffle is arranged in a connecting head, the end part of the grouting head is inserted into a central hole of the connecting head to form a closed grouting channel, and the connecting head is durable and can bear high-pressure large-flow grouting;
additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
Fig. 1 shows a schematic view of a docking station for deep grouting according to an embodiment of the invention.
Fig. 2 shows a schematic structural diagram of a connector for deep grouting according to an embodiment of the invention.
Fig. 3 shows an exploded view of a docking station for deep grouting according to an embodiment of the present invention.
Description of the reference numerals
1. A socket wrench; 2. a sleeve cover; 3. a quill tube; 4. a connector head; 5. a grouting pipe; 6. grouting a pipe cover; 7. a hand wheel; 8. a reducer union; 9. a pagoda joint; 10. a ball valve; 11. an anti-wind joint; 12. an oilless bushing.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The slip casting of the invention uses the interface unit, comprising:
the grouting device comprises a grouting pipe, a grouting machine connector and a connecting head, wherein one end of the grouting pipe is provided with the grouting machine connector, and the other end of the grouting pipe is provided with the connecting head which is used for connecting the grouting head;
the slip casting outside of managing is located to sleeve subassembly, sleeve subassembly rotationally the cover, and can follow the axial displacement of slip casting pipe, including fixed connection's box spanner and sleeve pipe, along sleeve subassembly's axial, box spanner's terminal surface surpasss the terminal surface of connecing the head.
Specifically, this ware of plugging into adopts the design of double-pipe, inside is the slip casting pipe, the sleeve pipe that is connected with box spanner is established to outside cover, connect into the head through the slip casting pipe and connect in the slip casting head, and along the axial displacement sleeve pipe of slip casting pipe, make the hexagon nut of slip casting head outer wall is located to the box spanner cover, can send deep slip casting head into the deep hole, and through rotating the sleeve pipe in order to drive the rotatory hexagon nut of box spanner, the overhead rubber circle of extrusion slip casting, make the external diameter inflation of rubber circle in order to be fixed in the slip casting hole with the slip casting head, and convenient for operation is applicable to the deep hole operation.
Furthermore, the slip casting connector is made of corrosion-resistant stainless steel with high hardness, can bear high pressure of slurry for a long time, can resist corrosion of chemical components in the slurry, greatly reduces damage probability and does not need to frequently replace vulnerable parts.
Further, the sleeve assembly outer tube has a diameter of 18mm, and commonly has lengths of 150mm, 370mm and 550m, which are respectively suitable for holes of three depths, and are selected according to the thickness of the building concrete.
As preferred scheme, connect the inside annular baffle that is equipped with of head, be equipped with the screw thread on the inner wall of connecting the head, the screw thread be used for with the first outer wall of slip casting screw-thread fit, when connecting the head and slip casting head and pass through threaded connection, the tip of slip casting head inserts in annular baffle's centre bore.
Specifically, the connecting head is in threaded connection with the outer wall of the grouting head, the connecting head can be disconnected from the grouting head only by rotating the grouting pipe anticlockwise after grouting is completed, the grouting connector is taken out along a straight line, the connector does not need to be rotated greatly, and the grouting connector is suitable for deep hole operation; the cushion elastic connection design of butter hair style has been banned, directly adopts the mode of the hard joint of screw thread locking slip casting head, and sets up the ring baffle in the connector, is that the tip of slip casting head inserts in its centre bore, forms airtight slip casting passageway, durable and can bear the large-traffic slip casting of high pressure.
As preferred scheme, the one end of slip casting pipe is connected with slip casting machine joint through slip casting pipe cap, and the slip casting pipe cap is equipped with the through-hole, and the through-hole communicates with slip casting pipe and slip casting machine joint.
Preferably, the grouting machine joint comprises a reducing joint and a pagoda joint, the small-diameter end of the pagoda joint is connected to the grouting machine, and the large-diameter end of the pagoda joint is connected to the grouting pipe cover through the reducing joint.
As the preferred scheme, the grouting machine joint further comprises an anti-winding joint, and the pagoda joint is connected to the reducing joint through the anti-winding joint.
Specifically, through setting up antiwind joint be convenient for the rotation of slip casting pipe, and then can drive the joint head rotation, make the outer wall screw thread of joint head inner wall and slip casting head lock each other.
As preferred scheme, the slip casting machine joint still includes the ball valve, and the ball valve sets up between pagoda joint and antiwind joint.
Specifically, the ball valve is arranged for cutting off the connection between the grouting machine and the grouting pipe, and grouting liquid in the grouting machine can be prevented from flowing out of the connecting pipe after the connector is disconnected from the grouting head.
As the preferred scheme, sleeve subassembly still includes sleeve cover and hand wheel, and slip casting tube cap and fixed connection in sleeve pipe are located to the sleeve cover, and the hand wheel cover is located on the sleeve cover, rotates the hand wheel and can drive the sleeve cover and rotate.
Specifically, pass through the sleeve pipe lid with the hand wheel and set up in the one end of the axial outside of the orientation slip casting hole of cover pipe, it is more convenient to rotate the cover pipe through the hand wheel.
As the preferred scheme, the sleeve cover is in threaded connection with the hand wheel and the sleeve pipe, and the sleeve cover can move along the axial direction of the grouting pipe cover.
Preferably, the oil-free sleeve further comprises a first oil-free bushing, and the first oil-free bushing is arranged between the outer wall of the connecting head and the inner wall of the sleeve assembly.
Preferably, the grouting pipe cover further comprises a second oilless bushing which is arranged between the outer wall of the grouting pipe cover and the sleeve pipe.
In particular, the oilless bushing acts as a wear protection.
Examples
Fig. 1 shows a schematic view of a docking apparatus for deep grouting according to the present embodiment; fig. 2 is a schematic structural view showing a connector for deep grouting according to the present embodiment; fig. 3 is an exploded view of the adaptor for deep grouting according to the present embodiment.
As shown in fig. 1 to 3, the slip casting connector includes:
one end of the grouting pipe 5 is connected with a grouting machine joint through a grouting pipe cover 6, a through hole is formed in the grouting pipe cover 6, the through hole is communicated with the grouting pipe 5 and the grouting machine joint, the grouting machine joint comprises an anti-winding joint 11, a ball valve 10, a reducing joint 8 and a pagoda joint 9, the small-diameter end of the pagoda joint 9 is used for being connected with the grouting machine, the large-diameter end of the pagoda joint 9 is connected with the anti-winding joint 11 through the ball valve 10, and the anti-winding joint 11 is connected with the grouting pipe cover 6 through the reducing joint 8; the other end of the grouting pipe 5 is provided with a connecting head 4 for connecting a grouting head, an annular baffle plate is arranged inside the connecting head 4, the inner wall of the connecting head 4 is provided with threads for matching with the threads on the outer wall of the grouting head, and when the connecting head 4 is connected with the grouting head through the threads, the end part of the grouting head is inserted into a central hole of the annular baffle plate; slip casting pipe 5 outside is located to the cover rotationally to the sleeve subassembly, and can follow the axial displacement of slip casting pipe 5, including fixed connection's box spanner 1 and sleeve pipe 3, along the axial of sleeve subassembly, the terminal surface of box spanner 1 can surpass the terminal surface of connecing and refuting head 4, the sleeve subassembly still includes sleeve cover 2 and hand wheel 7, slip casting pipe cover 6 and fixed connection in sleeve pipe 3 are located to sleeve cover 2 cover, sleeve cover 2 is located to hand wheel 7 cover, it can drive sleeve cover 2 and rotate to rotate hand wheel 7, sleeve cover 2 passes through threaded connection with hand wheel 7 and sleeve pipe 3, sleeve cover 2 can follow the axial displacement of slip casting pipe cover 6.
Wherein, be equipped with oilless bush 12 between the outer wall of connecing head 4 and the inner wall of sleeve subassembly and between the outer wall of slip casting tube cap 6 and the sleeve pipe 3 respectively.
The head of refuting through the slip casting pipe is connected in the slip casting head, and the axial displacement sleeve pipe along the slip casting pipe, make the hexagon nut of slip casting head outer wall be located to the box spanner cover, can send deep slip casting head into the deep hole, and through rotating the rotatory hexagon nut of box spanner in order to drive the box spanner, the overhead rubber circle of extrusion slip casting, make the external diameter inflation of rubber circle in order to be fixed in the slip casting hole with the slip casting head, high durability and convenient operation, the head of refuting adopts threaded connection with the outer wall of slip casting head, only need anticlockwise rotation slip casting pipe can break off the connection of refuting head and slip casting head after the slip casting is accomplished, take out the slip casting connector along the straight line, need not to rotate the connector by a wide margin, and be applicable to deep hole operation.
The advantages are that:
1. a special deep grouting connector is designed according to a deep grouting technology, is used in a deep grouting technology system of a concrete structure, realizes the use of a separated deep grouting head and the connector through tool equipment such as a special deep grouting head and a grouting machine, and can install a plurality of grouting heads in the same grouting hole to realize multi-layer and multi-material plugging operation.
2. The connector and the grouting head are in metal hard connection, so that high-pressure grouting is realized.
3. The connector for grouting is made of stainless steel, and the grouting head is made of aluminum alloy, so that the hardness of the grouting head is lower than that of the connector for grouting, and the damage probability of the connector for grouting is reduced.
4. Through the double cannula design, a clamping can send into the slip casting head deep hole in, can screw up slip casting head hexagon nut again, still accomplishes the effect of slip casting simultaneously.
5. The grouting connector is characterized in that a connection mode of the grouting head is locked by threads, the grouting pipe rotates anticlockwise in the deep hole to be disconnected, the grouting connector does not need to swing greatly, and the grouting connector is taken out along the axis.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (9)
1. A slip casting is with connector, its characterized in that includes:
the grouting device comprises a grouting pipe, a grouting machine connector and a connecting head, wherein one end of the grouting pipe is provided with the grouting machine connector, the other end of the grouting pipe is provided with the connecting head, and the connecting head is used for connecting the grouting head;
the grouting connector comprises a connecting head, a grouting head and a connecting sleeve, wherein the connecting head is cylindrical, an annular baffle is arranged inside the connecting head, threads are arranged on the inner wall of the connecting head and are used for being matched with the threads on the outer wall of the grouting head, and when the connecting head is connected with the grouting head through the threads, the end part of the grouting head is inserted into a central hole of the annular baffle;
the sleeve assembly, the sleeve assembly rotationally overlaps and locates the slip casting pipe is outside, and can follow the axial displacement of slip casting pipe, including fixed connection's box spanner and sleeve pipe, follow the axial of sleeve assembly, box spanner's terminal surface surpasses the terminal surface of connecing the head.
2. The connector for grouting according to claim 1, wherein the one end of the grouting pipe is connected to the joint of the grouting machine through a grouting pipe cover, and the grouting pipe cover is provided with a through hole which is communicated with the grouting pipe and the joint of the grouting machine.
3. The slip casting connector according to claim 2, wherein the slip casting connector comprises a reducer union and a pagoda union, a small diameter end of the pagoda union is used for connecting to a slip casting machine, and a large diameter end of the pagoda union is connected to the slip casting pipe cover through the reducer union.
4. The slip casting connector according to claim 3, wherein the slip casting joint further comprises an anti-wind joint, and the pagoda joint is connected to the reducer joint through the anti-wind joint.
5. The slip casting connector according to claim 4, wherein said slip casting connector further comprises a ball valve disposed between said pagoda connector and said anti-wind connector.
6. The connector for grouting according to claim 2, wherein the sleeve assembly further comprises a sleeve cover and a hand wheel, the sleeve cover is sleeved on the grouting pipe cover and fixedly connected to the sleeve pipe, the hand wheel is sleeved on the sleeve cover, and the hand wheel is rotated to drive the sleeve cover to rotate.
7. The slip casting connector according to claim 6, wherein the sleeve cover is screwed to the hand wheel and the sleeve pipe, and the sleeve cover is capable of moving in an axial direction of the slip casting pipe cover.
8. The connector for grouting according to claim 2, further comprising a first oilless bushing disposed between an outer wall of the connector head and an inner wall of the sleeve assembly.
9. The slip casting adapter according to claim 8, further comprising a second oilless bushing disposed between an outer wall of the slip casting pipe cover and the sleeve pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911013148.8A CN110656910B (en) | 2019-10-23 | 2019-10-23 | Slip casting connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911013148.8A CN110656910B (en) | 2019-10-23 | 2019-10-23 | Slip casting connector |
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| Publication Number | Publication Date |
|---|---|
| CN110656910A CN110656910A (en) | 2020-01-07 |
| CN110656910B true CN110656910B (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911013148.8A Active CN110656910B (en) | 2019-10-23 | 2019-10-23 | Slip casting connector |
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| CN (1) | CN110656910B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113738419B (en) * | 2021-09-02 | 2023-07-25 | 安徽佳乐矿山设备有限公司 | Hollow anchor rod propelling, installing and grouting device |
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| CN207906679U (en) * | 2018-02-01 | 2018-09-25 | 浙江方顿仪表阀门有限公司 | A kind of quick coupling |
| CN208899483U (en) * | 2018-08-09 | 2019-05-24 | 中铁八局集团昆明铁路建设有限公司 | A kind of steel pipe slip casting connector |
| CN209369847U (en) * | 2018-12-21 | 2019-09-10 | 泰安铭源节能科技有限公司 | A kind of hollow grouting cable anchor with connecing casting head fastly |
| CN209339648U (en) * | 2019-01-08 | 2019-09-03 | 重庆市十八土鑫诚灌浆防水工程有限公司 | A kind of grouting plug |
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| CN110656910A (en) | 2020-01-07 |
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