CN109083842B - High-pressure pneumatic motor - Google Patents
High-pressure pneumatic motor Download PDFInfo
- Publication number
- CN109083842B CN109083842B CN201810893970.7A CN201810893970A CN109083842B CN 109083842 B CN109083842 B CN 109083842B CN 201810893970 A CN201810893970 A CN 201810893970A CN 109083842 B CN109083842 B CN 109083842B
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- Prior art keywords
- air inlet
- air
- cylinder
- flashboard
- outer cover
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C1/00—Rotary-piston machines or engines
- F01C1/30—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/04—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents of internal-axis type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
Abstract
The invention relates to a high-pressure pneumatic motor which comprises a cylinder, a rotor and a high-pressure air storage tank, wherein the rotor is rotatably arranged in the cylinder through a support shaft and is coaxially arranged with the cylinder, four outer covers are arranged along the circumferential direction of the cylinder, an air inlet flashboard is arranged in each outer cover in a sliding manner, a resetting mechanism and a lubricating mechanism are arranged between the air inlet flashboards and the outer covers, the high-pressure air storage tank is positioned outside the cylinder and is communicated with the inside of the outer covers through an air inlet pipe to drive the air inlet flashboards to slide, three air inlet bulges are uniformly arranged in the circumferential direction of the rotor, and each air inlet bulge is integrally formed. The invention has the advantages that: the rotor has the advantages of no need of lubrication by a large amount of lubricating oil, no need of cooling, lower rotating speed, simple production process, simplified structure, reduced production cost, raised temperature, raised air pressure and contribution to the rotation of the rotor.
Description
Technical Field
The invention relates to a high-pressure pneumatic motor.
Background
The engine in the current market is generally a piston type or impeller type engine, and for lubricating oil adopted by the piston type engine, the required lubricating oil quantity is large, the structure is complex, and a heat dissipation facility corresponding to heat dissipation needs to be equipped; the impeller type impeller has the disadvantages of low horsepower, high abrasion, energy waste and high production cost.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a high-pressure pneumatic motor, and the technical scheme of the invention is as follows:
the high-pressure pneumatic machine comprises a cylinder, a rotor and a high-pressure air storage tank, wherein the rotor is fixed on a supporting shaft through a mounting plate, the supporting shaft is rotatably arranged in the cylinder, the rotor and the cylinder are coaxially arranged, four outer covers are arranged along the circumferential direction of the cylinder, an air inlet flashboard is arranged in each outer cover in a sliding manner, a reset mechanism and a lubricating mechanism are arranged between the air inlet flashboard and the outer covers, the high-pressure air storage tank is positioned outside the cylinder and communicated with the inside of the outer covers through an air inlet pipe to drive the air inlet flashboard to slide, three air inlet bulges are uniformly arranged in the circumferential direction of the rotor and are integrally formed and comprise an arc part, an inclined plane part and a plane part which are sequentially arranged, and the arc part is used for driving the air inlet flashboard to move upwards to close an air outlet seam of; a space is formed between the inclined plane part and the cylinder body; the plane part is provided with a sealing plate mounting groove, a sealing mechanism is arranged in the sealing plate mounting groove, and air flow coming out of the air outlet seam blows to the plane part; four pressure relief holes are formed in the end cover at one end of the cylinder body, and an included angle of 90 degrees is formed between every two adjacent pressure relief holes.
The air inlet pipe is annularly arranged, an air inlet is formed in each outer cover, two branch pipes are arranged at the air inlet, the other end of one branch pipe is located on one side of the outer cover, the other end of the other branch pipe is located on the other side of the outer cover, and the two branch pipes are communicated with the inside of the outer cover; an arc-shaped groove is formed in the upper end face of the air inlet flashboard and used for receiving air flow entering from the air inlet pipe; the two sides of the arc-shaped groove are provided with air inlet long holes which are arranged along the vertical direction, and the air outlet seam of the air inlet flashboard is communicated with the air inlet long holes.
The reset mechanism comprises mounting grooves arranged on two sides of the air inlet flashboard, a core pipe is mounted in each mounting groove, the lower end of each core pipe is spaced from the air inlet flashboard, a reset spring is sleeved on each core pipe, the lower end of each reset spring is connected to the air inlet flashboard, the upper end of each reset spring is connected to a gasket fixed on the outer cover, and a cotter pin is mounted at the upper end of each core pipe after penetrating through the gasket; the lower end surface of the air inlet flashboard is provided with a flashboard bearing, and the flashboard bearing is in rolling contact with the air inlet bulge; the air outlet seam of the air inlet flashboard is close to the bottom of the air inlet flashboard.
The lubricating mechanism comprises an oil injection channel arranged on the outer cover, the outer end of the oil injection channel is communicated with the lubricating oil tank, the inner end of the oil injection channel is communicated with an oil storage cavity in the outer cover, a roller cavity communicated with the oil storage cavity is further arranged in the outer cover, a roller is rotatably arranged in the roller cavity, and the roller is in rolling fit with the air inlet flashboard.
A driving big gear is arranged on the supporting shaft, a rotating shaft is rotatably arranged on one end cover of the cylinder, a driven small gear meshed with the driving big gear is arranged at the inner end of the rotating shaft, and the outer end of the rotating shaft penetrates through the end cover and is in transmission connection with the clutch; the clutch drives a recovery air pump to operate to recover air, and the recovery air pump is communicated with the high-pressure air storage tank.
The sealing mechanism comprises a sealing plate which is arranged in a sealing plate mounting groove through a spring, and the sealing plate is in contact with the inner wall of the cylinder body.
The included angle between two adjacent gas-facing bulges is 120 degrees; the contained angle between two adjacent enclosing covers is 90, the seam of giving vent to anger be 0.2mm apart from the bottom of flashboard, highly be greater than 0.2 mm's position at arc portion, will the flashboard jack-up that admits air, the seam of giving vent to anger that makes the flashboard of admitting air closes.
The two oil storage cavities are arranged up and down and are communicated with each other; each oil storage cavity is communicated with a ball cavity.
One end of the supporting shaft extends out of the barrel body and then is connected with one end of the speed increaser through a universal joint or a spline, and the other end of the speed increaser is connected with the gearbox.
The bottom of the arc part of one of the air-facing protrusions forms an included angle of 30-30.2 degrees with the side part of the adjacent plane part.
The invention has the advantages that: the rotor has the advantages of no need of lubrication by a large amount of lubricating oil, no need of cooling, lower rotating speed, simple production process, simplified structure, reduced production cost, raised temperature, raised air pressure and contribution to the rotation of the rotor.
Drawings
Fig. 1 is a schematic view of the main structure of the present invention.
Fig. 2 is a schematic structural view of the reset mechanism in fig. 1.
Fig. 3 is a side view of the intake shutter in fig. 1.
Fig. 4 is a top view of fig. 3.
FIG. 5 is a schematic view of the relationship between the outer cover (with the inlet shutter plate in the outer cover first moved downward) and the pressure relief vent of FIG. 1.
Detailed Description
The invention will be further described with reference to specific embodiments, and the advantages and features of the invention will become apparent as the description proceeds. These examples are illustrative only and do not limit the scope of the present invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications may be made without departing from the spirit and scope of the invention.
Referring to fig. 1 to 5, the present invention relates to a high pressure pneumatic motor, which comprises a cylinder 4, a rotor 5 and a high pressure gas storage tank, wherein the rotor mounting plate is fixed on a support shaft, the support shaft is rotatably mounted in the cylinder 4, the rotor and the cylinder 4 are coaxially arranged, four outer covers 13 (a first outer cover, a second outer cover, a third outer cover and a fourth outer cover) are mounted along the circumferential direction of the cylinder 4, an air inlet shutter 3 is slidably mounted in each outer cover 13, a reset mechanism and a lubrication mechanism are mounted between the air inlet shutter 3 and the outer covers 13, the high pressure gas storage tank is positioned outside the cylinder 4, is communicated with the inner part of the outer cover 13 through an air inlet pipe 1, and drives the air inlet shutter 3 to slide, three gas inlet protrusions are uniformly arranged along the circumferential direction of the rotor 5, each gas inlet protrusion is integrally formed, and comprises an arc-shaped part 6 which is sequentially arranged, The inclined plane part 7 and the plane part 8, the arc part 6 is used for driving the air inlet gate plate to move upwards and closing an air outlet seam of the air inlet gate plate; a space is formed between the inclined surface part 7 and the cylinder body 4; a sealing plate mounting groove is formed in the plane portion 8, a sealing mechanism is arranged in the sealing plate mounting groove, and air flow from the air outlet seam blows to the plane portion; the end cover at one end of the cylinder 4 is provided with four pressure relief holes 26 (a first pressure relief hole, a second pressure relief hole, a third pressure relief hole and a fourth pressure relief hole are uniformly arranged along the circumferential direction), and an included angle of 90 degrees is formed between every two adjacent pressure relief holes.
The air inlet pipe 1 is annularly arranged, an air inlet is formed in each outer cover 13, two branch pipes 2 are arranged at the air inlet, the other end of one branch pipe 2 is located on one side of the outer cover 13, the other end of the other branch pipe 2 is located on the other side of the outer cover 13, and the two branch pipes 2 are communicated with the inside of the outer cover 13; an arc-shaped groove 20 is formed in the upper end face of the air inlet shutter 3 and used for receiving air flow entering from the air inlet pipe 1; the two sides of the arc-shaped groove 20 are provided with air inlet long holes 22 which are arranged along the vertical direction, and the air outlet seam 23 of the air inlet flashboard 3 is communicated with the air inlet long holes 22.
The reset mechanism comprises mounting grooves 24 arranged at two sides of the air inlet flashboard 3, a core pipe 16 is mounted in each mounting groove 24, the lower end of each core pipe 16 is spaced from the air inlet flashboard 3, a reset spring 17 is sleeved on each core pipe 16, the lower end of each reset spring 17 is connected to the air inlet flashboard 3, the upper end of each reset spring 17 is connected to a gasket fixed on the outer cover 13, and an open pin is mounted at the upper end of each core pipe 16 after penetrating through the gasket; the lower end surface of the air inlet flashboard 3 is provided with a flashboard bearing 19, and the flashboard bearing 19 is in rolling contact with the air inlet bulge; the air outlet slit of the air inlet shutter 3 is close to the bottom of the air inlet shutter 3.
The lubricating mechanism comprises an oil filling channel arranged on the outer cover 13, the outer end of the oil filling channel is communicated with a lubricating oil tank, the inner end of the oil filling channel is communicated with an oil storage cavity 15 in the outer cover 13, a roller cavity 14 communicated with the oil storage cavity is further arranged in the outer cover, a roller is rotatably arranged in the roller cavity 14, and the roller 14 is in rolling fit with the air inlet gate plate 3 to lubricate the air inlet gate plate.
A driving big gear 11 is arranged on the supporting shaft, a rotating shaft is rotatably arranged on one end cover of the cylinder 4, a driven small gear 12 meshed with the driving big gear 11 is arranged at the inner end of the rotating shaft, and the outer end of the rotating shaft penetrates through the end cover to be in transmission connection with the clutch; the clutch drives a recovery air pump to operate to recover air, and the recovery air pump is communicated with the high-pressure air storage tank.
The sealing mechanism comprises a sealing plate 9 arranged in a sealing plate mounting groove through a spring 10, and the sealing plate 9 is contacted with the inner wall of the cylinder 4.
The included angle between two adjacent gas-facing bulges is 120 degrees; the contained angle between two adjacent enclosing covers is 90, the seam of giving vent to anger be 0.2mm apart from the bottom of flashboard, highly be greater than 0.2 mm's position at arc portion, will the flashboard jack-up that admits air, the seam of giving vent to anger that makes the flashboard of admitting air closes. The bottom of the arc part of one air-facing bulge and the side part of the adjacent plane part form an included angle (an angle a in figure 1) of 30-30.2 degrees; when the air outlet seam of the air inlet flashboard is positioned on the rotor, the air outlet seam is exposed out of the cylinder by 0.2-0.3 mm, when the arc part of the air inlet bulge slides to the air inlet flashboard, the air is cut off at an angle a of 30-30.2 degrees, and the highest height of the arc part is 0.3-0.5 mm.
The two oil storage cavities are arranged up and down and are communicated with each other; each oil storage cavity is communicated with a ball cavity.
One end of the supporting shaft extends out of the cylinder body 4 and then is connected with one end of a speed increaser through a universal joint or a spline, and the other end of the speed increaser is connected with a gearbox.
The working principle of the invention is as follows: when a high-pressure air outlet pipe provides an air source, air flow enters the outer covers through the air inlet pipe, at the moment, the air inlet flashboards of the first outer covers are pushed to move downwards, the air inlet flashboards in the other three outer covers are limited by the air inlet bulges, the air outlet seams are in a closed state, when the air flow blows to the arc-shaped grooves on the air inlet flashboards in the first outer covers, the air inlet flashboards are pushed to move downwards, meanwhile, 2-3mm air outlet seams are leaked after the air inlet flashboards fall on the surface of the rotor, the air flow is blown to the air outlet seams of the air inlet flashboards, when the air flow comes out from the air outlet seams, the plane parts adjacent to the air inlet flashboards are pushed to realize the rotation of the rotor, when the plane parts rotate over the air inlet flashboards of the second outer covers, the air outlet seams of the second air inlet flashboards move downwards to discharge air, the air outlet seams of the first air inlet flashboards move upwards to close, and, the pressure difference of the two sides of the gas inlet bulge is realized, and the continuous rotation of the rotor is realized.
Claims (10)
1. The high-pressure pneumatic machine is characterized by comprising a cylinder, a rotor and a high-pressure air storage tank, wherein the rotor is fixed on a supporting shaft through a mounting plate, the supporting shaft is rotatably arranged in the cylinder, the rotor and the cylinder are coaxially arranged, four outer covers are arranged in the circumferential direction of the cylinder, an air inlet flashboard is arranged in each outer cover in a sliding manner, a reset mechanism and a lubricating mechanism are arranged between the air inlet flashboards and the outer covers, the high-pressure air storage tank is positioned outside the cylinder and communicated with the inside of the outer covers through an air inlet pipe to drive the air inlet flashboards to slide, three air inlet bulges are uniformly arranged in the circumferential direction of the rotor, each air inlet bulge is integrally formed and comprises an arc part, an inclined plane part and a flat plane part which are sequentially arranged, and the arc part is used for driving the air inlet flashboards to move upwards to close an; a space is formed between the inclined plane part and the cylinder body; the plane part is provided with a sealing plate mounting groove, a sealing mechanism is arranged in the sealing plate mounting groove, and air flow coming out of the air outlet seam blows to the plane part; four pressure relief holes are formed in the end cover at one end of the cylinder body, and an included angle of 90 degrees is formed between every two adjacent pressure relief holes.
2. The high-pressure pneumatic motor as claimed in claim 1, wherein the inlet duct is annular, an inlet opening is provided at each outer cover, two branch ducts are provided at the inlet opening, one of the branch ducts has the other end located at one side of the outer cover, the other of the branch ducts has the other end located at the other side of the outer cover, and the two branch ducts are both communicated with the inside of the outer cover; an arc-shaped groove is formed in the upper end face of the air inlet flashboard and used for receiving air flow entering from the air inlet pipe; the two sides of the arc-shaped groove are provided with air inlet long holes which are arranged along the vertical direction, and the air outlet seam of the air inlet flashboard is communicated with the air inlet long holes.
3. The high pressure pneumatic motor according to claim 1, wherein the return mechanism comprises mounting grooves formed at both sides of the inlet shutter, a core tube is mounted in each mounting groove, the lower end of the core tube is spaced from the inlet shutter, a return spring is sleeved on the core tube, the lower end of the return spring is connected to the inlet shutter, the upper end of the return spring is connected to a gasket fixed on the outer cover, and a cotter pin is mounted at the upper end of the core tube after passing through the gasket; the lower end surface of the air inlet flashboard is provided with a flashboard bearing, and the flashboard bearing is in rolling contact with the air inlet bulge; the air outlet seam of the air inlet flashboard is close to the bottom of the air inlet flashboard.
4. The high pressure pneumatic motor as claimed in claim 1, wherein said lubricating mechanism includes a grease channel formed in the outer cover, an outer end of the grease channel being in communication with the grease reservoir, an inner end of the grease channel being in communication with the grease reservoir in the outer cover, and a roller chamber formed in the outer cover and in communication with the grease reservoir, the roller being rotatably mounted in the roller chamber, the roller being in rolling engagement with said inlet shutter.
5. The high-pressure pneumatic motor as claimed in claim 1, wherein a driving gearwheel is mounted on the supporting shaft, a rotating shaft is rotatably mounted on one end cover of the cylinder, a driven pinion engaged with the driving gearwheel is mounted at the inner end of the rotating shaft, and the outer end of the rotating shaft penetrates through the end cover and is in transmission connection with the clutch; the clutch drives a recovery air pump to operate to recover air, and the recovery air pump is communicated with the high-pressure air storage tank.
6. The high-pressure pneumatic motor as claimed in any one of claims 1 to 5, wherein the sealing mechanism comprises a sealing plate mounted by a spring in a sealing plate mounting groove, the sealing plate being in contact with the inner wall of the cylinder.
7. The high-pressure pneumatic machine according to claim 6, wherein the angle between two adjacent air-facing protrusions is 120 °; the contained angle between two adjacent enclosing covers is 90, the seam of giving vent to anger be 0.2mm apart from the bottom of flashboard, highly be greater than 0.2 mm's position at arc portion, will the flashboard jack-up that admits air, the seam of giving vent to anger that makes the flashboard of admitting air closes.
8. The high-pressure pneumatic motor as claimed in claim 4, wherein said oil storage chambers are two, arranged one above the other and in communication with each other; each oil storage cavity is communicated with a ball cavity.
9. The high-pressure pneumatic motor as claimed in claim 7, wherein one end of the supporting shaft extends out of the cylinder and is connected with one end of a speed increaser through a universal joint or a spline, and the other end of the speed increaser is connected with a gear box.
10. The high pressure pneumatic motor of claim 7, wherein the base of the arcuate portion of an inlet lobe forms an angle of 30-30.2 ° with the side of the adjacent planar portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/070321 WO2019149030A1 (en) | 2018-02-02 | 2019-01-04 | High-pressure pneumatic machine |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018101054990 | 2018-02-02 | ||
| CN201810105499.0A CN108331753A (en) | 2018-02-02 | 2018-02-02 | High pressure gas motivation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109083842A CN109083842A (en) | 2018-12-25 |
| CN109083842B true CN109083842B (en) | 2020-06-26 |
Family
ID=62927746
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810105499.0A Pending CN108331753A (en) | 2018-02-02 | 2018-02-02 | High pressure gas motivation |
| CN201810893970.7A Active CN109083842B (en) | 2018-02-02 | 2018-08-08 | High-pressure pneumatic motor |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810105499.0A Pending CN108331753A (en) | 2018-02-02 | 2018-02-02 | High pressure gas motivation |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN108331753A (en) |
| WO (1) | WO2019149030A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331753A (en) * | 2018-02-02 | 2018-07-27 | 刘永祥 | High pressure gas motivation |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS575502A (en) * | 1980-06-11 | 1982-01-12 | Teruyasu Mochizuki | Rotor type rotary machine |
| CN1014920B (en) * | 1989-02-22 | 1991-11-27 | 浙江工学院 | Wobble-wheel fluid engine |
| US5174742A (en) * | 1992-02-03 | 1992-12-29 | Snap-On Tools Corporation | Rotary air motor with curved tangential vanes |
| DE10311773A1 (en) * | 2003-03-18 | 2004-09-30 | Imris, Pavel, Dr. | Compressed air motor for use as e.g. radial engine, window blind motor, sliding vane motor, gear motor, has electric current tubes whose open ends are in tangential relation to stator, and which are bent about driveshaft |
| DE20306866U1 (en) * | 2003-04-28 | 2003-07-31 | Bernau Klaus Juergen | Rotary swing piston motor, using an oxyhydrogen fuel mixture, has a center pressure zone at the rotor and structured piston shapes to seal their swing chambers on a maximum possible swing angle |
| CN2729319Y (en) * | 2004-08-20 | 2005-09-28 | 沈阳工业学院 | Hole pneumatic motor |
| CN101397914A (en) * | 2007-09-24 | 2009-04-01 | 陈军 | Novel mass flow blade mechanism |
| JP5993579B2 (en) * | 2012-02-14 | 2016-09-14 | 株式会社大林組 | Sediment pressure pump, shield machine, and shield method for construction work |
| CN204921047U (en) * | 2015-09-02 | 2015-12-30 | 黄敬平 | Ratchet formula pneumatic motor |
| CN108331753A (en) * | 2018-02-02 | 2018-07-27 | 刘永祥 | High pressure gas motivation |
-
2018
- 2018-02-02 CN CN201810105499.0A patent/CN108331753A/en active Pending
- 2018-08-08 CN CN201810893970.7A patent/CN109083842B/en active Active
-
2019
- 2019-01-04 WO PCT/CN2019/070321 patent/WO2019149030A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN109083842A (en) | 2018-12-25 |
| CN108331753A (en) | 2018-07-27 |
| WO2019149030A1 (en) | 2019-08-08 |
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