CN109530337B - Automatic blowing-cleaning system for inner cavity of engine cylinder body - Google Patents
Automatic blowing-cleaning system for inner cavity of engine cylinder body Download PDFInfo
- Publication number
- CN109530337B CN109530337B CN201910034105.1A CN201910034105A CN109530337B CN 109530337 B CN109530337 B CN 109530337B CN 201910034105 A CN201910034105 A CN 201910034105A CN 109530337 B CN109530337 B CN 109530337B
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- Prior art keywords
- blowing
- frame body
- cylinder
- roller way
- material blocking
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- 238000004140 cleaning Methods 0.000 title abstract description 16
- 238000007664 blowing Methods 0.000 claims abstract description 143
- 239000000428 dust Substances 0.000 claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims description 49
- 239000000463 material Substances 0.000 claims description 36
- 230000000903 blocking effect Effects 0.000 claims description 30
- 238000002955 isolation Methods 0.000 claims description 12
- 238000000605 extraction Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 238000010926 purge Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 230000009471 action Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005266 casting Methods 0.000 description 2
- 238000010408 sweeping Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0326—Using pulsations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0328—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid by purging the pipe with a gas or a mixture of gas and liquid
Abstract
The invention discloses an automatic blowing-off system for an inner cavity of an engine cylinder body, which comprises a frame body arranged in a blowing-sucking room; a compressed air source with a valve is arranged on the frame body, a blowing roller way conveying device for conveying an engine cylinder body is arranged below the frame body, a top blowing device is arranged on the frame body above a blowing station of the blowing roller way conveying device, and a side blowing device is arranged on the frame body on one side of the blowing station of the blowing roller way conveying device; the compressed air source is communicated with the top blowing device and the side blowing device through pipelines. The invention has simple structure and convenient use. The engine cylinder body is cleaned in a pulse mode by the top blowing device and the side blowing device and through simulating the horizontal, inclined and rotary actions of manual blowing, the blowing effect is good, and the cleaning efficiency is greatly improved. The top blowing device and the side blowing device can be flexibly adjusted, and the application range is wide. The manual operation is replaced by mechanical cleaning, so that the problems of dust pollution and noise pollution brought to operators by cleaning operation are avoided.
Description
Technical Field
The invention relates to the technical field of casting cleaning, in particular to an automatic blowing and cleaning system for an inner cavity of an engine cylinder body.
Background
After the engine cylinder body casting is subjected to annealing aging treatment, grinding, vibration decoring and shot blasting treatment, more dust is stored in the inner cavity of the cylinder body, and the dust can influence the post-process processing of the cylinder body if the dust is not cleaned. Cleaning the dust in the inner cavity of the cylinder body generally sweeps the interior of the cylinder body by dry compressed air through a blowing nozzle, dust and noise pollution can be generated in the sweeping and cleaning process, and in order to prevent the dust and the noise from polluting the environment, the cleaning of the inner cavity of the cylinder body generally operates in a closed environment. The operating personnel work under the confined environment that is full of dust and noise, must wear heavy personal protection articles for use, and the operating personnel action is inflexible to cause work inefficiency, dust and noise also cause very big injury to workman's mind and body simultaneously.
Disclosure of Invention
The invention aims to provide an automatic blowing system for an inner cavity of an engine cylinder body, which is used for automatically cleaning the inner cavity of the cylinder body.
In order to achieve the above purpose, the present invention may adopt the following technical scheme:
The invention relates to an automatic blowing-off system for an inner cavity of an engine cylinder body, which comprises a frame body arranged in a blowing-sucking room; a compressed air source with a valve is arranged on the frame body, a blowing roller way conveying device for conveying an engine cylinder body is arranged below the frame body, a top blowing device is arranged on the frame body above a blowing station of the blowing roller way conveying device, and a side blowing device is arranged on the frame body positioned on one side of the blowing station of the blowing roller way conveying device; the compressed air source is communicated with the top blowing device and the side blowing device through pipelines.
An electromagnetic pulse valve is arranged on the pipeline.
The blowing-off roller conveying device comprises a conveying roller driven by a power source, and a material blocking device and a centering positioning mechanism are arranged below the conveying roller.
The material blocking device comprises a material blocking arm, the middle of the material blocking arm is hinged with the frame body below the conveying roller way, the bottom of the material blocking arm is hinged with the end part of a piston rod of a material blocking cylinder arranged on the frame body, and the top of the material blocking arm extends to the upper part of the conveying roller way.
The centering positioning mechanism comprises a rotating shaft arranged below a blowing station of the blowing roller way conveying device, a gear is arranged on the rotating shaft, left and right racks are respectively meshed with the two sides of the gear in parallel, the left and right racks are respectively connected with left and right sliding plates, and the left and right sliding plates are respectively connected with piston rods of left and right cylinders arranged on the frame body; the upper parts of the left sliding plate and the right sliding plate extend to the upper part of the conveying roller way.
The top blowing device comprises a top blowing lifting mechanism arranged above the frame body, an air pipe is horizontally arranged at the bottom of the top blowing lifting mechanism, and a plurality of top blowing nozzles are arranged below the air pipe in a spaced communication mode.
The side-blowing device comprises a side-blowing frame, a side-blowing lifting mechanism is arranged on the side-blowing frame, a horizontal moving mechanism is arranged above the side-blowing lifting mechanism, and a side-blowing mechanism is arranged at the moving end part of the horizontal moving mechanism.
The side blowing mechanism comprises a fixed seat arranged at the moving end part of the horizontal moving mechanism, an inclined air cylinder is arranged on the fixed seat, mounting plates are respectively arranged at two ends of the fixed seat, a rotating shaft is arranged between the mounting plates, an inclined arm is arranged on the rotating shaft at the position of the inclined air cylinder, and the end part of the inclined arm is hinged with a piston cylinder of the inclined air cylinder; the rotary shaft is provided with a plurality of blowing nozzle seats at intervals, each blowing nozzle seat is hinged with a side blowing nozzle, each side blowing nozzle is provided with a blowing nozzle rotating arm, the rotary shaft is provided with a rotary cylinder, a piston cylinder of the rotary cylinder is provided with a rotary rotating arm, a connecting rod parallel to the rotary shaft is arranged above the rotary shaft, and the upper ends of the blowing nozzle rotating arm and the rotary rotating arm are hinged with the connecting rod.
The frame body is covered with the dustproof isolation cover that is connected with the frame body the dustproof isolation cover top is provided with the extraction opening dustproof isolation cover bottom has seted up the dust fall mouth.
The dust falling port is arranged below the blowing station of the blowing roller conveyor, the dust falling port is obliquely provided with a material guide plate, and the bottom of the material guide plate is provided with a dust conveyor.
The invention has the advantages of simple structure and convenient use. The engine cylinder body is cleaned in a pulse mode and simulated by the top blowing device and the side blowing device through horizontal, inclined and rotary actions of manual blowing, the blowing effect is good, the cleaning automation of the inner cavity of the cylinder body is realized, and the cleaning efficiency is greatly improved. Meanwhile, the top blowing device and the side blowing device can be flexibly adjusted, can adapt to cylinder bodies with different specifications, and are wide in application range. The manual operation is replaced by mechanical cleaning, so that the problems of dust pollution and noise pollution brought to operators by cleaning operation are avoided. The cylinder body is positioned in a mechanical centering mode by adopting the material blocking device and the centering positioning mechanism, so that the positioning is accurate and the action is reliable.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a right side view of fig. 1.
Fig. 3 is a schematic view of the side-blowing apparatus of fig. 1.
Fig. 4 is a schematic view of the side-blowing mechanism in fig. 3.
Fig. 5 is a right side view of fig. 4.
Fig. 6 is a top view of fig. 5.
FIG. 7 is a schematic view of the centering mechanism of the present invention.
Fig. 8 is a bottom view of fig. 7.
Fig. 9 is a schematic view of the structure of the stopper of the present invention.
Detailed Description
As shown in fig. 1-9, the automatic blowing-off system for the inner cavity of the engine cylinder body comprises a frame body 1 arranged in a blowing-sucking room; a compressed air source 3 with a valve 2 is arranged on the frame body 1, a blowing roller way conveying device 5 for conveying an engine cylinder body 4 is arranged below the frame body 1, a top blowing device 6 is arranged on the frame body 1 positioned above a blowing station of the blowing roller way conveying device 5, and a side blowing device 7 is arranged on the frame body 1 positioned on one side of the blowing station of the blowing roller way conveying device 5; the compressed air source 3 is communicated with the top blowing device 6 and the side blowing device 7 through a pipeline 8; an electromagnetic pulse valve is arranged on the pipeline 8; the blowing-off roller conveying device 5 comprises a conveying roller 501 driven by a power source, and a material blocking device 9 and a centering positioning mechanism 10 are arranged below the conveying roller 501; the material blocking device 9 comprises a material blocking arm 901, the middle part of the material blocking arm 901 is hinged with the frame body 1 below the conveying roller way 501, the bottom of the material blocking arm 901 is hinged with the end part of a piston rod of a material blocking cylinder 902 arranged on the frame body 1, and the top of the material blocking arm 901 extends to the upper part of the conveying roller way 501; the centering and positioning mechanism 10 comprises a rotating shaft 1001 arranged below a blowing station of the blowing roller conveyor 5, a gear 1002 is arranged on the rotating shaft 1001, left and right racks 1003 and 1004 are respectively meshed with two sides of the gear 1002 in parallel, the left and right racks 1003 and 1004 are respectively connected with left and right sliding plates 1005 and 1006, and the left and right sliding plates 1005 and 1006 are respectively connected with piston rods of left and right cylinders 1007 and 1008 arranged on the frame body 1; the upper parts of the left sliding plate 1005 and the right sliding plate 1006 extend above the conveying roller way 501; the top blowing device 6 comprises a top blowing lifting mechanism 601 arranged above the frame body 1, an air pipe 602 is horizontally arranged at the bottom of the top blowing lifting mechanism 601, and a plurality of top blowing nozzles 603 are communicated and arranged below the air pipe 602 at intervals; the side-blowing device 7 comprises a side-blowing frame 701, wherein a side-blowing lifting mechanism 702 is arranged on the side-blowing frame 701, a horizontal moving mechanism 703 is arranged above the side-blowing lifting mechanism 702, and a side-blowing mechanism 704 is arranged at the moving end part of the horizontal moving mechanism 703; the side blowing mechanism 704 comprises a fixed base 7041 arranged at the moving end part of the horizontal moving mechanism 703, an inclined air cylinder 7042 is arranged on the fixed base 7041, mounting plates 7043 are respectively arranged at two ends of the fixed base 7041, a rotating shaft 7044 is arranged between the mounting plates 7043, an inclined arm 7045 is arranged on the rotating shaft 7044 positioned at the position of the inclined air cylinder 7042, and the end part of the inclined arm 7045 is hinged with a piston cylinder of the inclined air cylinder 7042; a plurality of blowing nozzle holders 7046 are arranged on the rotating shaft 7044 at intervals, side blowing nozzles 7047 are hinged to each blowing nozzle holder 7046, a blowing nozzle rotating arm 7048 is arranged on each side blowing nozzle 7047, a rotating cylinder 7049 is arranged on the rotating shaft 7044, a rotating arm 7050 is arranged on a piston cylinder of the rotating cylinder 7049, a connecting rod 7051 parallel to the rotating shaft 7044 is arranged above the rotating shaft 7044, and the upper ends of the blowing nozzle rotating arm 7048 and the rotating arm 7050 are hinged to the connecting rod 7051; a dustproof isolation cover 11 connected with the frame body 1 is arranged on the outer cover of the frame body 1, an air extraction opening 12 is arranged at the top of the dustproof isolation cover 11, and a dust falling opening is arranged at the bottom of the dustproof isolation cover 11; the dust falling port is formed below the blowing station of the blowing roller conveyor device 5, the dust falling port is obliquely provided with a material guide plate 13, and a dust conveyor is arranged at the bottom of the material guide plate 13.
The blowing-off roller way conveying device 5 is used for conveying and accurately positioning the cylinder body 4; the side blowing device 7 is used for blowing and cleaning the inner part of the side edge of the cylinder body 4, has the functions of vertical and horizontal movement, and the side blowing mechanism 704 has the functions of inclination and rotation; the top blowing device 6 sweeps and cleans the interior of the cylinder body 4 through a hole at the top of the cylinder body 4; the compressed air source 3 provides stable and sufficient compressed air for blowing for the top blowing device 6 and the side blowing device 7; the dust-proof isolation cover 11 realizes isolation of the purging mechanism from the external space and prevents dust from diffusing to the surrounding environment.
When the device is adopted to blow the inner cavity of the cylinder body, the device comprises the following operations:
Starting a compressed air source 3, starting a blowing roller conveying device 5 to convey the engine cylinder body 4 to a blowing station, and accurately positioning the engine cylinder body 4 by a material blocking device 9 and a centering positioning mechanism 10 on the blowing roller conveying device 5: when a piston rod of the material blocking cylinder 902 extends out, the material blocking arm 901 rotates upwards by taking the middle part as a circle center, the top of the material blocking arm 901 extends above the conveying roller way 501 to block the movement of a workpiece, and the end part of the cylinder body 4 is positioned; when the material blocking cylinder 902 is retracted, the upper part of the material blocking arm 901 rotates downwards, and the cylinder body 4 can move forwards; when piston rods of left and right cylinders 1007 and 1008 of centering and positioning mechanism 10 are contracted, left and right sliding plates 1005 and 1006 move towards the middle under the drive of left and right cylinders 1007 and 1008, and synchronous movement of left and right sliding plates 1005 and 1006 is realized under the action of left and right racks 1003 and 1004 which are respectively engaged with two sides of gear 1002 in parallel, so that accurate positioning of cylinder 4 is realized;
The side blowing lifting mechanism 702 of the side blowing device 7 is a lifting plate driven by a lifting cylinder, a guide column is arranged at the top of the side blowing frame 701, and the lifting plate is sleeved on the guide column through a guide sleeve; the horizontal moving mechanism 703 is a horizontal cylinder arranged on the lifting plate, the side blowing mechanism 704 is connected with the end part of a piston rod of the horizontal cylinder through the fixed seat 7041, the side blowing mechanism 704 is moved forwards through the horizontal moving mechanism 703, the side blowing nozzle 7047 is sent into a side hole of the cylinder body 4, and when the inclined cylinder 7042 stretches, the inclined arm 7045 drives the rotating shaft 7044 to rotate and drives the blowing nozzle seat 7046 to synchronously rotate, so that the side blowing nozzle 7047 is inclined by a certain angle; meanwhile, the rotary cylinder 7049 works to drive the connecting rod 7051 to swing, so that the side blowing nozzle 7047 can swing back and forth within a certain angle range, meanwhile, the electromagnetic pulse valve also works in a pulse mode, and the side blowing nozzle 7047 can sweep the cylinder body 4 at the side surface, so that the side sweeping requirement of the cylinder body 4 is met;
After the side surface blowing is finished, a top blowing lifting mechanism 601 of a top blowing device 6 starts to move downwards, the top blowing lifting mechanism 601 is a top lifting cylinder, a piston rod of the top blowing lifting mechanism drives an air pipe 602 to move downwards, a top blowing nozzle 603 enters a hole of a cylinder body 4, an electromagnetic pulse valve also works in a pulse mode, and the inner cavity of the cylinder body 4 is cleaned at the top;
after the top purging is completed, the material blocking arm 901 of the material blocking device 9 moves downwards, the centering and positioning mechanism 10 is opened, the conveying roller way 501 starts to work to remove the cleaned cylinder body 4, and meanwhile, the next cylinder body 4 is sent to a blowing station, so that the cycle is performed.
Dust isolation cover 11 isolates the dust that sweeps out in a relatively confined space, and the dust in the air purifies through the external dust remover that extraction opening 12 connects, and heavy dust granule is led the dust into the trench through stock guide 13, is sent to by the dust conveyer and blows outside the clear room.
Claims (6)
1. An automatic blowing-off system for an inner cavity of an engine cylinder body comprises a frame body arranged in a blowing-sucking room; the method is characterized in that: a compressed air source with a valve is arranged on the frame body, a blowing roller way conveying device for conveying an engine cylinder body is arranged below the frame body, a top blowing device is arranged on the frame body above a blowing station of the blowing roller way conveying device, and a side blowing device is arranged on the frame body positioned on one side of the blowing station of the blowing roller way conveying device; the compressed air source is communicated with the top blowing device and the side blowing device through pipelines;
the blowing-off roller conveying device comprises a conveying roller driven by a power source, and a material blocking device and a centering positioning mechanism are arranged below the conveying roller;
The centering positioning mechanism comprises a rotating shaft arranged below a blowing station of the blowing roller way conveying device, a gear is arranged on the rotating shaft, left and right racks are respectively meshed with the two sides of the gear in parallel, the left and right racks are respectively connected with left and right sliding plates, and the left and right sliding plates are respectively connected with piston rods of left and right cylinders arranged on the frame body; the upper parts of the left sliding plate and the right sliding plate extend to the upper part of the conveying roller way;
the side blowing device comprises a side blowing frame, a side blowing lifting mechanism is arranged on the side blowing frame, a horizontal moving mechanism is arranged above the side blowing lifting mechanism, and a side blowing mechanism is arranged at the moving end part of the horizontal moving mechanism;
The side blowing mechanism comprises a fixed seat arranged at the moving end part of the horizontal moving mechanism, an inclined air cylinder is arranged on the fixed seat, mounting plates are respectively arranged at two ends of the fixed seat, a rotating shaft is arranged between the mounting plates, an inclined arm is arranged on the rotating shaft at the position of the inclined air cylinder, and the end part of the inclined arm is hinged with a piston cylinder of the inclined air cylinder; the rotary shaft is provided with a plurality of blowing nozzle seats at intervals, each blowing nozzle seat is hinged with a side blowing nozzle, each side blowing nozzle is provided with a blowing nozzle rotating arm, the rotary shaft is provided with a rotary cylinder, a piston cylinder of the rotary cylinder is provided with a rotary rotating arm, a connecting rod parallel to the rotary shaft is arranged above the rotary shaft, and the upper ends of the blowing nozzle rotating arm and the rotary rotating arm are hinged with the connecting rod.
2. The automatic blow-down system for an engine block cavity of claim 1, wherein: an electromagnetic pulse valve is arranged on the pipeline.
3. The automatic blow-down system for an engine block cavity of claim 1, wherein: the material blocking device comprises a material blocking arm, the middle of the material blocking arm is hinged with the frame body below the conveying roller way, the bottom of the material blocking arm is hinged with the end part of a piston rod of a material blocking cylinder arranged on the frame body, and the top of the material blocking arm extends to the upper part of the conveying roller way.
4. The automatic blow-down system for an engine block cavity of claim 1, wherein: the top blowing device comprises a top blowing lifting mechanism arranged above the frame body, an air pipe is horizontally arranged at the bottom of the top blowing lifting mechanism, and a plurality of top blowing nozzles are arranged below the air pipe in a spaced communication mode.
5. The automatic blow-down system for an engine block cavity of claim 1, wherein: the frame body is covered with the dustproof isolation cover that is connected with the frame body the dustproof isolation cover top is provided with the extraction opening dustproof isolation cover bottom has seted up the dust fall mouth.
6. The automatic engine block cavity purge system of claim 5, wherein: the dust falling port is arranged below the blowing station of the blowing roller conveyor, the dust falling port is obliquely provided with a material guide plate, and the bottom of the material guide plate is provided with a dust conveyor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910034105.1A CN109530337B (en) | 2019-01-15 | 2019-01-15 | Automatic blowing-cleaning system for inner cavity of engine cylinder body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910034105.1A CN109530337B (en) | 2019-01-15 | 2019-01-15 | Automatic blowing-cleaning system for inner cavity of engine cylinder body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109530337A CN109530337A (en) | 2019-03-29 |
| CN109530337B true CN109530337B (en) | 2024-05-03 |
Family
ID=65835428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910034105.1A Active CN109530337B (en) | 2019-01-15 | 2019-01-15 | Automatic blowing-cleaning system for inner cavity of engine cylinder body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109530337B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113953292B (en) * | 2021-09-16 | 2023-05-02 | 安徽誉特双节能技术有限公司 | Device for purging inner cylinder during overhauling of steam turbine |
| CN113996596B (en) * | 2021-10-29 | 2023-07-07 | 摩西智能工业股份有限公司 | Flexible slag blowing equipment for cylinder body |
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-
2019
- 2019-01-15 CN CN201910034105.1A patent/CN109530337B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101194110B1 (en) * | 2012-04-16 | 2012-10-29 | 주식회사 피알 | Coolant and air blowing washing device for engine cylinder block |
| KR101194099B1 (en) * | 2012-07-06 | 2012-10-24 | 주식회사 피알 | Washing device for automotive engine cylinder head and adaptor plate using shifting and tilting |
| CN106111628A (en) * | 2016-08-24 | 2016-11-16 | 大连现代辅机开发制造有限公司 | Electromotor workpiece compressed air cleaning process and compressed air cleaning machine thereof |
| CN206168877U (en) * | 2016-08-31 | 2017-05-17 | 庆铃汽车（集团）有限公司 | Oblique oilhole of cylinder body main oil gallery sweeps device |
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| CN109530337A (en) | 2019-03-29 |
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