CN109441338B - Railway tunnel pneumatic rock drill flow divider and manufacturing method thereof - Google Patents
Railway tunnel pneumatic rock drill flow divider and manufacturing method thereof Download PDFInfo
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- CN109441338B CN109441338B CN201811298344.XA CN201811298344A CN109441338B CN 109441338 B CN109441338 B CN 109441338B CN 201811298344 A CN201811298344 A CN 201811298344A CN 109441338 B CN109441338 B CN 109441338B
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- 239000011435 rock Substances 0.000 title claims abstract description 39
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims description 93
- 239000010959 steel Substances 0.000 claims description 93
- 229910001220 stainless steel Inorganic materials 0.000 claims description 66
- 239000010935 stainless steel Substances 0.000 claims description 66
- 238000010276 construction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000005553 drilling Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 108010066057 cabin-1 Proteins 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- E21B1/00—Percussion drilling
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- Environmental & Geological Engineering (AREA)
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Abstract
The invention discloses a railway tunnel pneumatic rock drill diverter and a manufacturing method thereof, wherein the railway tunnel pneumatic rock drill diverter comprises a high-pressure water diverter for connecting a pneumatic rock drill and high-pressure water and a high-pressure air diverter for connecting the pneumatic rock drill and high-pressure air; the high-pressure water flow divider comprises a first flow dividing bin, first flow dividing pipes arranged on two sides of the first flow dividing bin and a first joint pipe arranged at the central shaft of the end part of the first flow dividing bin, and a drain pipe is arranged at one end of the first flow dividing bin, close to the bottom of the first flow dividing bin; the high-pressure air flow divider comprises a second flow dividing bin and second flow dividing pipes arranged on two sides of the second flow dividing bin, and a second joint pipe is arranged at the central shaft of the end part of the second flow dividing bin. The railway tunnel pneumatic rock drill flow divider adopting the structure and the manufacturing method thereof can enable high-pressure air and high-pressure water to be quickly connected with the pneumatic rock drill, and have the advantages of simple structure, convenience in operation, three-way pipes and rubber hoses which can be saved by adopting the flow divider, and lower manufacturing cost.
Description
Technical Field
The invention relates to the technical field of railway tunnel construction, in particular to a railway tunnel pneumatic rock drill flow divider and a manufacturing method thereof.
Background
At present, during the construction of a railway tunnel by a drilling and blasting method, most of drill holes are constructed by a pneumatic rock drill, in order to improve the construction speed of the drill holes, the drill holes of each working face basically start at the same time, high-pressure air and high-pressure water used by the pneumatic rock drill need to be led to a range of 50 meters away from a face, then the high-pressure air and the high-pressure water are connected by a rubber hose, and the high-pressure air and the high-pressure water are led to the face to be. Pneumatic rock drill adopts the rubber hose to connect with high-pressure air, high pressure water connection when tunnel excavation drilling before, leads to and adopts tee bend etc. to introduce respectively behind the face, causes near face a large amount of rubber hoses to appear, because connect not good probably to produce phenomena such as gas leakage, water leakage at any time simultaneously, the cooperation personnel that need are more, waste time and energy, influence the construction progress.
Disclosure of Invention
The invention aims to provide a railway tunnel pneumatic rock drill flow divider and a manufacturing method thereof, which can enable high-pressure air and high-pressure water to be quickly connected with a pneumatic rock drill, have simple structure and convenient operation, can save a three-way pipe and a rubber hose by adopting the flow divider, and have lower manufacturing cost.
In order to achieve the aim, the invention provides a railway tunnel pneumatic rock drill flow divider and a manufacturing method thereof, wherein the railway tunnel pneumatic rock drill flow divider comprises a high-pressure water flow divider for connecting a pneumatic rock drill and high-pressure water and a high-pressure air flow divider for connecting the pneumatic rock drill and high-pressure air;
the high-pressure water flow divider comprises a first flow dividing bin, first flow dividing pipes arranged on two sides of the first flow dividing bin and a first joint pipe arranged at the central shaft of the end part of the first flow dividing bin, and a drain pipe is arranged at one end of the first flow dividing bin, close to the bottom of the first flow dividing bin;
the high-pressure air flow divider comprises a second flow dividing bin and second flow dividing pipes arranged on two sides of the second flow dividing bin, and a second joint pipe is arranged at the central shaft of the end part of the second flow dividing bin.
Preferably, first shunt tubes include with first connecting pipe, first ball valve and the reducing pagoda connector that first reposition of redundant personnel storehouse is connected, the reducing pagoda connector with first ball valve is connected, first ball valve with first connecting pipe is connected, the diameter of first connecting pipe is greater than the diameter of reducing pagoda connector.
Preferably, the drain pipe comprises
Ball valve and
stainless steel seamless steel pipe, said
The stainless steel seamless steel tube is arranged in
Both ends of the ball valve, said
Ball valve and
the stainless steel seamless steel pipes are connected through turning threads.
Preferably, the second shunt tube include with the second connecting pipe that the second shunt storehouse is connected, with the second ball valve that the second connecting pipe is connected and with the third connecting pipe that the second ball valve is connected, the tip of third connecting pipe sets up connects the screw thread joint, the below of connecting the screw thread joint is provided with the end cap nut, the end cap nut is fixed on the third connecting pipe, the diameter of third connecting pipe with the diameter of second connecting pipe equals.
Preferably, the first shunt bin and the second shunt bin are both made of phi 180 seamless steel tubes, and two ends of the first shunt bin and the second shunt bin are welded and blocked through steel plates.
Preferably, the first joint pipe and the second joint pipe each include
Ball valve and
seamless steel pipe, said
The seamless steel tube is arranged in
Both ends of the ball valve, said
Ball valve and
the seamless steel pipes are connected through turning threads.
Preferably, the first connection pipe and the second connection pipe are both
Stainless steel seamless steel pipe.
A manufacturing method of a railway tunnel pneumatic rock drill flow divider comprises the following steps:
A. manufacturing a high-pressure water flow divider:
firstly, a first flow-dividing bin is manufactured, and the first flow-dividing bin is
A seamless steel pipe, the length of which is 40cm,
two ends of the seamless steel pipe are welded by adopting steel plates with the thickness of 5mm, so that a first diversion bin is obtained;
secondly, manufacturing a first shunt pipe, wherein the first shunt pipe consists of a first connecting pipe, a first ball valve and a variable-diameter pagoda connector, the first connecting pipe is connected with a first shunt bin, and the first connecting pipe is
A stainless steel seamless steel tube, which is made of stainless steel,
a stainless steel seamless steel pipe is welded in the through hole on the pipe wall of the first diversion bin, and the stainless steel seamless steel pipe is welded in the through hole on the pipe wall of the first diversion bin
The other end of the stainless steel seamless steel pipe is connected to a first ball valve through a screw thread, and the other end of the first ball valve is connected with a reducing pagoda connector;
making the first joint tube again by
Ball valve, two ends adopt
The stainless steel seamless steel pipes are connected with each other,
ball valve and
the stainless steel seamless steel pipes are connected by adopting a turning wire, the length of the turning wire is 5cm,
a stainless steel seamless steel pipe is fixed at one end of the first diversion bin;
finally, a drain pipe is manufactured by
Ball valve, two ends adopt
The stainless steel seamless steel pipes are connected with each other,
stainless steel seamless steel pipe and
the ball valves are connected by threading, the threading length is 5cm, and then the ball valves are connected by threading
A stainless steel seamless steel pipe is fixed at one end of the first diversion bin;
B. manufacturing a high-pressure air splitter:
firstly, a second flow-dividing bin is manufactured
A seamless steel pipe, the length of which is 40cm,
two ends of the seamless steel pipe are welded by adopting steel plates with the thickness of 5mm, and a second shunt bin is obtained;
secondly, manufacturing a second shunt pipe which comprises a second connecting pipe, a second ball valve and a second valveThree connecting pipes, the second connecting pipe is
A stainless steel seamless steel tube, which is made of stainless steel,
a stainless steel seamless steel pipe is welded in the through hole on the pipe wall of the second shunt chamber,
the stainless steel seamless steel pipe is connected with the second ball valve through a screw thread, the other end of the second ball valve is connected with a third connecting pipe, and the third connecting pipe is
The end part of the third connecting pipe is provided with a connecting screw thread joint, and a plug nut is arranged below the connecting screw thread joint;
finally, a second joint pipe is manufactured by
Ball valve, two ends adopt
The stainless steel seamless steel pipes are connected with each other,
ball valve and
the stainless steel seamless steel pipes are connected by adopting a turning wire, the length of the turning wire is 5cm,
and a stainless steel seamless steel pipe is fixed at one end of the second branch bin.
Preferably, the first ball valve and the second ball valve are both
Length of ball valve screw threadThe degree is 5cm, diameter hole on first reposition of redundant personnel storehouse and the second reposition of redundant personnel storehouse is 15 mm.
Preferably, the length of the connecting screw thread joint is 1.2cm, and the plug nut is a butterfly nut.
Therefore, the railway tunnel pneumatic rock drill flow divider adopting the structure and the manufacturing method thereof can enable high-pressure air and high-pressure water to be quickly connected with the pneumatic rock drill, and have the advantages of simple structure, convenience in operation, three-way pipes and rubber hoses which can be saved by adopting the flow divider, and lower manufacturing cost.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic diagram of the construction of a high pressure water diverter of the present invention;
FIG. 2 is a schematic structural view of a high pressure air splitter according to the present invention;
FIG. 3 is a schematic structural diagram of a first shunt tube according to the present invention;
fig. 4 is a schematic structural diagram of a second shunt tube according to the present invention.
Detailed Description
Examples
Fig. 1 is a schematic structural view of a high-pressure water diverter of the present invention, fig. 2 is a schematic structural view of a high-pressure air diverter of the present invention, and as shown in fig. 1 and fig. 2, the present invention provides a railway tunnel pneumatic rock drill diverter comprising a high-pressure water diverter connecting a pneumatic rock drill with high-pressure water and a high-pressure air diverter connecting the pneumatic rock drill with high-pressure air; the high-pressure water flow divider comprises a first flow dividing bin 1, first flow dividing pipes 2 arranged on two sides of the first flow dividing bin 1 and a first joint pipe 3 arranged at a central shaft at the end part of the first flow dividing bin 1, and a drain pipe 4 is arranged at one end of the first flow dividing bin 1, close to the bottom of the first flow dividing bin 1; the high-pressure air flow divider comprises a second flow dividing bin 5 and second flow dividing pipes 6 arranged on two sides of the second flow dividing bin 5, and a second joint pipe 7 is arranged at the central shaft of the end part of the second flow dividing bin 5.
Fig. 3 is a schematic structural diagram of the first shunt tube of the present invention, and as shown in the figure, the first shunt tube 2 includes a first connection tube 201 connected to the first shunt chamber 1, a first ball valve 202, and a variable diameter pagoda connector 203, the variable diameter pagoda connector 203 is connected to the first ball valve 202, the first ball valve 202 is connected to the first connection tube 201, and the diameter of the first connection tube 201 is greater than the diameter of the variable diameter pagoda connector 203.
The water discharge pipe 4 comprises
Ball valve 401 and
a stainless steel seamless steel tube 402 is provided,
the stainless steel seamless steel pipe 402 is arranged at
At both ends of the ball valve 401,
ball valve 401 and
the stainless steel seamless steel tubes 402 are connected by threading.
Fig. 4 is a schematic structural diagram of a second shunt tube according to the present invention, and as shown in the figure, the second shunt tube 6 includes a second connection tube 601 connected to the second shunt chamber 5, a second ball valve 602 connected to the second connection tube 601, and a third connection tube 603 connected to the second ball valve 602, a connection screw joint 604 is disposed at an end of the third connection tube 603, a plug nut 605 is disposed below the connection screw joint 604, the plug nut 605 is fixed on the third connection tube 603, and a diameter of the third connection tube 603 is equal to a diameter of the second connection tube 601. The first shunt cabin 1 and the second shunt cabin 5 are both made of phi 180 seamless steel tubes, and two ends of the first shunt cabin and the second shunt cabin are welded and blocked through steel plates.
The first joint pipe 3 and the second joint pipe 7 each include
Ball valve 301(701) and
the seamless steel tube 302(702),
the seamless steel pipe 302(702) is arranged in
At both ends of the ball valve 301(701),
ball valve 301(701) and
the seamless steel pipes 302(702) are connected by threading.
The first connection pipe 201 and the second connection pipe 601 are both
Stainless steel seamless steel pipe.
A manufacturing method of a railway tunnel pneumatic rock drill flow divider comprises the following steps:
A. manufacturing a high-pressure water flow divider:
firstly, a first flow-dividing bin is manufactured, and the first flow-dividing bin is
A seamless steel pipe, the length of which is 40cm,
two ends of the seamless steel pipe are welded by adopting steel plates with the thickness of 5mm, so that a first diversion bin is obtained;
then, a first shunt pipe is manufactured, wherein the first shunt pipe consists of a first connecting pipe, a first ball valve and a reducing pagoda connector, and the first shunt pipe is connected with the first connecting pipe through a first ball valveA connecting pipe is connected with the first shunt bin, and the first connecting pipe is
A stainless steel seamless steel tube, which is made of stainless steel,
a stainless steel seamless steel pipe is welded in a through hole on the pipe wall of the first diversion bin, the diameter hole is 15mm, and the stainless steel seamless steel pipe is welded in a through hole on the pipe wall of the first diversion bin, and the stainless steel seamless steel pipe is used for connecting the first diversion bin and the first diversion bin in
The other end of the stainless steel seamless steel pipe is connected with a first ball valve through a screw thread, the other end of the first ball valve is connected with a reducing pagoda connector, and the first ball valve is
The length of the screw thread of the ball valve is 5 cm;
making the first joint tube again by
Ball valve, two ends adopt
The stainless steel seamless steel pipes are connected with each other,
ball valve and
the stainless steel seamless steel pipes are connected by adopting a turning wire, the length of the turning wire is 5cm,
a stainless steel seamless steel pipe is fixed at one end of the first diversion bin;
finally, a drain pipe is manufactured by
Ball valve, two ends adopt
The stainless steel seamless steel pipes are connected with each other,
stainless steel seamless steel pipe and
the ball valves are connected by threading, the threading length is 5cm, and then the ball valves are connected by threading
A stainless steel seamless steel pipe is fixed at one end of the first diversion bin;
B. manufacturing a high-pressure air splitter:
firstly, a second flow-dividing bin is manufactured
A seamless steel pipe, the length of which is 40cm,
two ends of the seamless steel pipe are welded by adopting steel plates with the thickness of 5mm, and a second shunt bin is obtained;
secondly, manufacturing a second shunt pipe, wherein the second shunt pipe comprises a second connecting pipe, a second ball valve and a third connecting pipe, and the second connecting pipe is
A stainless steel seamless steel tube, which is made of stainless steel,
a stainless steel seamless steel pipe is welded in the through hole on the pipe wall of the second shunt chamber, the diameter hole is 15mm,
the stainless steel seamless steel pipe is connected with the second ball valve through a screw thread, the other end of the second ball valve is connected with a third connecting pipe, and the third connecting pipe is
The end part of the third connecting pipe is provided with a connecting screw thread joint with the length of 1.2cm, a plug nut is arranged below the connecting screw thread joint, the plug nut is a butterfly nut, and the second ball valve is a butterfly nut
The length of the screw thread of the ball valve is 5 cm;
finally, a second joint pipe is manufactured by
Ball valve, two ends adopt
The stainless steel seamless steel pipes are connected with each other,
ball valve and
the stainless steel seamless steel pipes are connected by adopting a turning wire, the length of the turning wire is 5cm,
and a stainless steel seamless steel pipe is fixed at one end of the second branch bin.
Therefore, the railway tunnel pneumatic rock drill flow divider adopting the structure and the manufacturing method thereof can enable high-pressure air and high-pressure water to be quickly connected with the pneumatic rock drill, and have the advantages of simple structure, convenience in operation, three-way pipes and rubber hoses which can be saved by adopting the flow divider, and lower manufacturing cost.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the invention without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides a railway tunnel pneumatic rock drill shunt which characterized in that:
comprises a high-pressure water shunt connecting a pneumatic rock drill and high-pressure water and a high-pressure air shunt connecting the pneumatic rock drill and high-pressure air;
the high-pressure water flow divider comprises a first flow dividing bin, first flow dividing pipes arranged on two sides of the first flow dividing bin and a first joint pipe arranged at the central shaft of the end part of the first flow dividing bin, and a drain pipe is arranged at one end of the first flow dividing bin, close to the bottom of the first flow dividing bin;
the high-pressure air flow divider comprises a second flow dividing bin and second flow dividing pipes arranged on two sides of the second flow dividing bin, and a second joint pipe is arranged at a central shaft of the end part of the second flow dividing bin;
the manufacturing method of the railway tunnel pneumatic rock drill flow divider comprises the following steps:
A. manufacturing a high-pressure water flow divider:
firstly, a first flow-dividing bin is manufactured, and the first flow-dividing bin is
A seamless steel pipe, the length of which is 40cm,
two ends of the seamless steel pipe are welded by adopting steel plates with the thickness of 5mm, so that a first diversion bin is obtained;
secondly, manufacturing a first shunt pipe, wherein the first shunt pipe consists of a first connecting pipe, a first ball valve and a variable-diameter pagoda connector, the first connecting pipe is connected with a first shunt bin, and the first connecting pipe is
A stainless steel seamless steel tube, which is made of stainless steel,
stainless steel seamless steel pipe is welded at first reposition of redundant personnel storehouse pipeIn the through hole on the wall, will
The other end of the stainless steel seamless steel pipe is connected to a first ball valve through a screw thread, and the other end of the first ball valve is connected with a reducing pagoda connector;
making the first joint tube again by
Ball valve, two ends adopt
The stainless steel seamless steel pipes are connected with each other,
ball valve and
the stainless steel seamless steel pipes are connected by adopting a turning wire, the length of the turning wire is 5cm,
a stainless steel seamless steel pipe is fixed at one end of the first diversion bin;
finally, a drain pipe is manufactured by
Ball valve, two ends adopt
The stainless steel seamless steel pipes are connected with each other,
stainless steel seamless steel pipe and
the ball valves are connected by threading, the threading length is 5cm, and then the ball valves are connected by threading
A stainless steel seamless steel pipe is fixed at one end of the first diversion bin;
B. manufacturing a high-pressure air splitter:
firstly, a second flow-dividing bin is manufactured
A seamless steel pipe, the length of which is 40cm,
two ends of the seamless steel pipe are welded by adopting steel plates with the thickness of 5mm, and a second shunt bin is obtained;
secondly, manufacturing a second shunt pipe, wherein the second shunt pipe comprises a second connecting pipe, a second ball valve and a third connecting pipe, and the second connecting pipe is
A stainless steel seamless steel tube, which is made of stainless steel,
a stainless steel seamless steel pipe is welded in the through hole on the pipe wall of the second shunt chamber,
the stainless steel seamless steel pipe is connected with the second ball valve through a screw thread, the other end of the second ball valve is connected with a third connecting pipe, and the third connecting pipe is
The end part of the third connecting pipe is provided with a connecting screw thread joint, and a plug nut is arranged below the connecting screw thread joint;
finally, a second joint pipe is manufactured by
Ball valve, two ends adopt
The stainless steel seamless steel pipes are connected with each other,
ball valve and
the stainless steel seamless steel pipes are connected by adopting a turning wire, the length of the turning wire is 5cm,
and a stainless steel seamless steel pipe is fixed at one end of the second branch bin.
2. The railway tunnel pneumatic rock drill diverter according to claim 1, wherein: first shunt tubes include with first connecting tube, first ball valve and the reducing pagoda connector that first reposition of redundant personnel storehouse is connected, the reducing pagoda connector with first ball valve is connected, first ball valve with first connecting tube is connected, the diameter of first connecting tube is greater than the diameter of reducing pagoda connector.
3. The railway tunnel pneumatic rock drill diverter according to claim 1, wherein: the drain pipe comprises
Ball valve and
stainless steel seamless steel pipe, said
The stainless steel seamless steel tube is arranged in
Both ends of the ball valve, said
Ball valve and
the stainless steel seamless steel pipes are connected through turning threads.
4. The railway tunnel pneumatic rock drill diverter according to claim 1, wherein: the second shunt tubes include with the second connecting pipe that the second shunt storehouse is connected, with the second ball valve that the second connecting pipe is connected and with the third connecting pipe that the second ball valve is connected, the tip of third connecting pipe sets up the connection screw thread and connects, the below of connecting the screw thread and connecting is provided with the end cap nut, the end cap nut is fixed on the third connecting pipe, the diameter of third connecting pipe with the diameter of second connecting pipe equals.
5. The railway tunnel pneumatic rock drill diverter according to claim 1, wherein: the first shunt bin and the second shunt bin are both made of phi 180 seamless steel tubes, and two ends of the first shunt bin and the second shunt bin are welded and blocked through steel plates.
6. The railway tunnel pneumatic rock drill diverter according to claim 1, wherein: the first joint pipe and the second joint pipe both comprise
Ball valve and
seamless steel pipe, said
The seamless steel tube is arranged in
Both ends of the ball valve, said
Ball valve and
the seamless steel pipes are connected through turning threads.
7. The railway tunnel pneumatic rock drill diverter according to claim 1, wherein: the first connecting pipe and the second connecting pipe are both
Stainless steel seamless steel pipe.
8. The railway tunnel pneumatic rock drill diverter according to claim 1, wherein: the first ball valve and the second ball valve are both
The ball valve, screw thread length 5cm, first reposition of redundant personnel storehouse with diameter hole on the second reposition of redundant personnel storehouse is 15 mm.
9. The railway tunnel pneumatic rock drill diverter according to claim 1, wherein: the length of the connecting screw thread joint is 1.2cm, and the plug nut is a butterfly nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811298344.XA CN109441338B (en) | 2018-11-02 | 2018-11-02 | Railway tunnel pneumatic rock drill flow divider and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811298344.XA CN109441338B (en) | 2018-11-02 | 2018-11-02 | Railway tunnel pneumatic rock drill flow divider and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109441338A CN109441338A (en) | 2019-03-08 |
| CN109441338B true CN109441338B (en) | 2020-08-07 |
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ID=65550550
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| CN201811298344.XA Active CN109441338B (en) | 2018-11-02 | 2018-11-02 | Railway tunnel pneumatic rock drill flow divider and manufacturing method thereof |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT262190B (en) * | 1964-08-11 | 1968-06-10 | Stabilator Ab | Method of knocking down the drill bit of a drill bit and drill bit |
| CN102797426B (en) * | 2012-08-29 | 2015-04-29 | 三一重型装备有限公司 | Water-supply device of rock drill and rock drill |
| CN203189232U (en) * | 2012-11-14 | 2013-09-11 | 中国建筑土木建设有限公司 | Air compressor diverter for tunnel construction |
| CN203614819U (en) * | 2013-11-07 | 2014-05-28 | 南京晨光森田环保科技有限公司 | High-pressure water distribution pipeline system |
| CN205447983U (en) * | 2016-01-06 | 2016-08-10 | 浙江蔡司管道科技有限公司 | Anti high -pressure water knockout drum |
| CN206129558U (en) * | 2016-11-02 | 2017-04-26 | 中国电建集团成都勘测设计研究院有限公司 | Integrated form air feed system for rock drill |
| CN206341676U (en) * | 2016-12-05 | 2017-07-21 | 安徽东方金桥农林科技股份有限公司 | A kind of treegarden irrigation water pipe branch apparatus |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20190514 Address after: 072750 Hebei Baoding Zhuozhou Guanyun Road China Railway 18 Bureau Group First Engineering Co., Ltd. Applicant after: THE 1ST ENGINEERING CO., LTD. OF CHINA RAILWAY 18TH BUREAU GROUP CO., LTD. Address before: 072750 Hebei Baoding Zhuozhou Guanyun Road China Railway 18 Bureau Group First Engineering Co., Ltd. Applicant before: Yao Xiaoning |
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