CN110116113B - Automatic gear cleaning machine - Google Patents
Automatic gear cleaning machine Download PDFInfo
- Publication number
- CN110116113B CN110116113B CN201810833290.6A CN201810833290A CN110116113B CN 110116113 B CN110116113 B CN 110116113B CN 201810833290 A CN201810833290 A CN 201810833290A CN 110116113 B CN110116113 B CN 110116113B
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- Prior art keywords
- oil
- pipe
- hopper
- gear
- place
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- 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
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/022—Cleaning travelling work
-
- 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
- B08B5/023—Cleaning travelling work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
- B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
- B08B2203/0217—Use of a detergent in high pressure cleaners; arrangements for supplying the same
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- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention discloses an automatic gear cleaning machine which comprises a rack, a device A, a device B and a control part, wherein a cavity is formed in the rack; the device B comprises a recovery device, a suction device and a purification device, wherein the suction device comprises a bell mouth and a suction pipe, the bell mouth is higher than the product fixing device and is positioned at the rear side of the rack, one end of the suction pipe is connected with the bell mouth, the other end of the suction pipe is connected with the purification device, the purification device is used for separating oil mist generated in the cleaning process, the recovery device comprises a hopper and a hopper, the hopper is positioned below the product fixing device, and the hopper is positioned below the hopper; the invention solves the problem of poor cleaning effect of gears in large batch, avoids resource waste to a great extent due to the recovery of cleaning oil, and can automatically operate other processes except the process of manually disassembling the gears in the whole process by equipment, thereby shortening the time consumption of the production process and greatly improving the working efficiency.
Description
Technical Field
The invention relates to the field of mechanical automatic cleaning, in particular to an automatic gear cleaning machine.
Background
Automation refers to a process of realizing an expected target by automatic detection, information processing, analysis and judgment, and operation control according to the requirements of people in the processes of machine equipment, systems or production and management without direct participation of people or few people. Automation technology is widely used in industry, agriculture, military, scientific research, transportation, commerce, medical treatment, services, and home.
However, in the field of gear industry, because of the structural particularity of gears and the adhesion property of oil stains generated in machining engineering, the traditional gear cleaning method has four types:
firstly, manual cleaning, which employs a large number of staff to clean by using a brush at a small time;
second, high-pressure cleaning is a machine that uses a power device (motor, gasoline engine, diesel engine) to make a high-pressure plunger pump generate high-pressure water to wash the surface of an object. The dirt can be peeled off and washed away, so that the aim of cleaning the surface of an object is fulfilled;
thirdly, hydraulic cleaning is carried out, and pollutants generated or invaded during the manufacturing, assembling, using and maintaining processes of the hydraulic system are washed and filtered; the device can also be suitable for the regular maintenance and filtration of working oil;
and fourthly, spray cleaning, which is industrial cleaning equipment for washing the surface of an object by using water pressure. It can peel off and wash away dirt on the surface of workpiece to clean the surface of object.
However, the cleaning mode only has a good effect on cleaning small-batch gears, and has the problems of overhigh labor and resource cost, low cleaning quality and the like on cleaning large-batch gears.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide an automated gear washing machine.
In order to achieve the purpose, the invention adopts the following technical scheme:
an automated gear washing machine comprising:
the device comprises a frame, a clamping device and a control device, wherein a cavity is formed in the frame;
the device A comprises an oil conveying device, an air pipe and a product fixing device, wherein the oil conveying device comprises an oil tank, an oil pump and an oil pipe, the oil tank and the oil pump are positioned at the lower part of the cavity, the product fixing device is positioned above the oil tank, and the oil pipe is arranged in parallel with the air pipe and is positioned above the product fixing device;
the device B comprises a recovery device, a suction device and a purification device, wherein the suction device comprises a bell mouth and a suction pipe, the bell mouth is higher than the product fixing device and is positioned at the rear side of the rack, one end of the suction pipe is connected with the bell mouth, the other end of the suction pipe is connected with the purification device, the purification device is used for separating oil mist generated in the cleaning process, the recovery device comprises a hopper and a hopper, the hopper is positioned below the product fixing device, and the hopper is positioned below the hopper;
and the control part comprises a first driving device and an operation screen, and the first driving device is used for controlling the device B.
Further, the oil tank includes first oil tank and second oil tank, and first oil tank and second oil tank are abreast and separate with the division board, the oil pump includes first oil pump and second oil pump, and first oil pump parallels with the second oil pump, oil pipe includes first oil pipe and second oil pipe, and first oil pipe parallels with the second oil pipe. The invention adopts two-stage cleaning, and the arrangement of the oil pipes can have better cleaning effect.
Further, the air pipe comprises a first air pipe and a second air pipe, and the first air pipe and the second air pipe are arranged in parallel. The gas pipes are arranged in parallel, so that the gear can be more thoroughly flushed and cleaned.
Further, division board upper end still is equipped with first fixing base, first fixing base both ends are equipped with second fixing base and third fixing base respectively, are equipped with the rotation axis between second fixing base and third fixing base, and rotation axis both ends cover has first rotatory piece and the rotatory piece of second, and first rotatory piece is fixed with the hopper both ends respectively with the rotatory piece of second. The hopper of the invention can rotate, and ensures that the outlet direction of the hopper can respectively turn to the first oil tank and the second oil tank.
Further, the second fixing seat is further provided with a groove, a rack is arranged in the groove, the rack can slide in the groove, a gear is arranged above the rack, the gear is connected with the rack in a matched mode, and the gear is connected with the rotating shaft in a matched mode. Ensure that the rotating shaft can be driven by the gear to rotate.
Further, the first driving device is fixed with the rack and used for controlling the rack to slide. According to the invention, the first driving device controls the rack to slide and drives the gear to rotate, so that the hopper is controlled to rotate.
Furthermore, the lower ends of the air pipe and the oil pipe are provided with a supporting plate, the supporting plate is positioned above the oil pump, the lower end of the supporting plate is provided with a screw rod sleeved with a connecting block, and the connecting block is fixedly connected with the supporting plate. The connecting block moves back and forth due to the rotation of the screw rod, so that the air pipe and the oil pipe are driven to move back and forth, and a more thorough cleaning effect is achieved.
Further, one end of the screw rod is also connected with a motor. The motor of the invention drives the screw rod to rotate.
Furthermore, the upper ends of the air pipe and the oil pipe are also fixedly provided with in-place sensors, and the front side and the rear side of the cavity are respectively provided with a first in-place inductive switch and a second in-place inductive switch. The present invention can determine the back and forth stroke of the air pipe and the oil pipe because of the in-place sensor.
Furthermore, the control part is also provided with an operation screen which is arranged on the frame. The position of the operation screen is easy to operate and observe.
By adopting the preferred scheme, a large quantity of gears can be placed on the product fixing device, the cleaning of the gears is divided into two stages, the first oil tank and the first oil pipe are subjected to first-stage primary cleaning, the first air pipe blows air to blow the gears clean after the primary cleaning is finished, if the cleaning effect does not reach the expected effect, the step can be repeatedly carried out until the expected effect is reached, the liquid part of the oil sprayed by the oil pipe in the process flows into the first oil tank through the recovery device after the gears are cleaned, and the oil mist part enters the first oil tank after being processed by the purification device; the second oil tank and the second oil pipe are finally cleaned in the second stage, the second air pipe blows air to blow the gear clean after cleaning is finished, if the cleaning effect does not reach the expected effect, the step can be repeated until the expected effect is achieved, in the process, the liquid part of the oil sprayed by the oil pipe flows into the second oil tank through the recovery device after the gear is cleaned, and the oil mist part is treated by the purification device and then enters the first oil tank;
the invention solves the problem of poor cleaning effect of gears in large batch, avoids resource waste to a great extent due to the recovery of cleaning oil, and can automatically operate other processes except the process of manually disassembling the gears in the whole process by equipment, thereby shortening the time consumption of the production process and greatly improving the working efficiency.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
Fig. 2 is another overall structure diagram of an embodiment of the present invention.
Fig. 3 is a partial structural schematic diagram of an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a hopper device according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a hopper device according to an embodiment of the present invention.
Detailed Description
The invention will be described in further detail below with reference to the accompanying figures 1-5 and the detailed description of the invention, which are not intended to limit the invention.
Examples
An automated gear washing machine as shown in fig. 1-5, comprising:
the device comprises a frame 1, wherein a cavity is formed in the frame 1;
the device A comprises an oil conveying device 2, an air pipe 3 and a product fixing device 4, wherein the oil conveying device 2 comprises an oil tank, an oil pump and an oil pipe 23, the oil tank and the oil pump are positioned at the lower part of a cavity, the product fixing device 4 is positioned above the oil tank, and the oil pipe 23 is arranged in parallel with the air pipe 3 and is positioned above the product fixing device 4;
the device B comprises a recovery device 5, a suction device 6 and a purification device 7, wherein the suction device 6 comprises a bell mouth and a suction pipe, the bell mouth is higher than the product fixing device 4 and is positioned at the rear side of the rack 1, one end of the suction pipe is connected with the bell mouth, the other end of the suction pipe is connected with the purification device 7, the purification device 7 is used for separating oil mist generated in the cleaning process, the recovery device 5 comprises a hopper 51 and a hopper 52, the hopper 51 is positioned below the product fixing device 4, and the hopper 52 is positioned below the hopper 51;
and a control section 8 including a first driving device 81, the first driving device 81, and an operation panel, the first driving device 81 being used for controlling the device B.
In order to further optimize the implementation effect of the present invention, in another embodiment of the present invention, based on the foregoing, the oil tank includes a first oil tank 211 and a second oil tank 212, the first oil tank 211 is juxtaposed with the second oil tank 212 and separated by a partition plate 53, the oil pump includes a first oil pump 221 and a second oil pump 222, the first oil pump 221 is juxtaposed with the second oil pump 222, the oil pipe 23 includes a first oil pipe 231 and a second oil pipe 232, and the first oil pipe 231 is juxtaposed with the second oil pipe 232.
Further, the air tube 3 includes a first air tube 31 and a second air tube 32, and the first air tube 31 is juxtaposed to the second air tube 32.
Further, the upper end of the isolation plate 53 is further provided with a first fixing seat 54, two ends of the first fixing seat 54 are respectively provided with a second fixing seat 55 and a third fixing seat 56, a rotating shaft 57 is arranged between the second fixing seat 55 and the third fixing seat 56, two ends of the rotating shaft 57 are sleeved with a first rotating block 58 and a second rotating block 59, and the first rotating block 58 and the second rotating block 59 are respectively fixed with two ends of the hopper 52.
Further, the second fixing seat 55 is further provided with a groove, a rack 101 is arranged in the groove, the rack 101 is slidable in the groove, a first gear 102 is arranged above the rack 101, the first gear 102 is connected with the rack 101 in a matched manner, and the first gear 102 is connected with the rotating shaft 57 in a matched manner.
Further, the first driving device 81 is fixed to the rack 101 and is used for controlling the rack 101 to slide.
Further, the lower ends of the air pipe 3 and the oil pipe 23 are provided with a supporting plate, the supporting plate is positioned above the oil pump, the lower end of the supporting plate is provided with a screw rod sleeved with a connecting block, and the connecting block is fixedly connected with the supporting plate.
Further, one end of the screw rod is also connected with a motor 27.
Furthermore, the upper ends of the air pipe 3 and the oil pipe 23 are also fixed with in-place sensors, and the front side and the rear side of the cavity are respectively provided with a first in-place inductive switch and a second in-place inductive switch.
Further, the control part 8 is also provided with an operation screen which is arranged on the frame 1.
In conclusion, when the diesel oil cleaning device works, a large quantity of gears are placed on the product fixing device 4, poor diesel oil is filled in the first oil tank 211, clean diesel oil is filled in the second oil tank 212, the number of times of cleaning in the first stage and the second stage can be set through the operation screen, when the first stage is primary cleaning, the first oil pump 221 extracts the diesel oil from the first oil tank 211, sprays the diesel oil onto the gears through the first oil pipe 231 and can drive the sprayed gears to rotate, so that the gears are fully cleaned, meanwhile, the motor 27 such as the stepping motor 27 is started to drive the screw rod to rotate, so that the connecting block can move on the screw rod, the first oil pipe 231 moves, the in-place sensor starts from the first in-place induction switch, and reversely reaches the first in-place induction switch after reaching the second in-place induction switch to complete a diesel oil cleaning process;
then, the first oil pipe 231 is closed, the first air pipe 31 is started, the gear is subjected to an air blowing process and can be driven to rotate, so that the gear is completely cleaned, meanwhile, the stepping motor 27 drives the screw rod to rotate, so that the connecting block can move on the screw rod, the first air pipe 31 moves, the in-place sensor starts from the first in-place induction switch, the air blowing process is performed in a reverse direction after reaching the second in-place induction switch, and the air blowing process is performed five times under normal conditions;
during the primary cleaning process, the first driving device 81, such as an air cylinder, pushes the rack 101 according to the setting, the first gear 102 matched with the rack 101 rotates, the rotating shaft 57 is driven to rotate, the first rotating block 58 and the second rotating block 59 rotate, and the hopper 52 rotates, so that the outlet end of the hopper 52 is turned to the first oil tank 211;
the above is a primary cleaning process, if the expected cleaning effect is not achieved, the step needs to be repeated until the expected effect is achieved;
after the preliminary cleaning is finished, starting the second cleaning, wherein the second oil pump 222 extracts diesel oil from the second oil tank 212, sprays the diesel oil onto the gear through the second oil pipe 232 and can drive the sprayed gear to rotate, so that the gear is cleaned comprehensively, and meanwhile, the motor 27 such as the stepping motor 27 drives the screw rod to rotate, so that the connecting block can move on the screw rod, so that the second oil pipe 232 moves, the in-place sensor starts from the first in-place inductive switch, and reversely reaches the first in-place inductive switch after reaching the second in-place inductive switch to finish a diesel oil cleaning process;
then, the second oil pipe 232 is closed, the second air pipe 32 is started, the air blowing process is performed on the gear, the gear can be driven to rotate, the gear can be completely cleaned, meanwhile, the stepping motor 27 drives the screw rod to rotate, the connecting block can move on the screw rod, the second air pipe 32 moves, the in-place sensor starts from the first in-place induction switch, the air blowing process is performed when the in-place sensor reaches the second in-place induction switch, the air blowing process is performed in a reverse direction and then reaches the first in-place induction switch, and under the normal condition, the air blowing process is performed five times;
in the secondary cleaning process, the first driving device 81, such as an air cylinder, pulls the rack 101 according to the setting, the first gear 102 matched with the rack 101 rotates, the rotating shaft 57 is driven to rotate, the first rotating block 58 and the second rotating block 59 rotate, and the hopper 52 rotates, so that the outlet end of the hopper 52 is turned to the second oil tank 212;
the above is a secondary cleaning process, if the expected cleaning effect is not achieved, the step needs to be repeated until the expected effect is achieved;
during the whole cleaning process, the cleaning device 7 is in operation, the suction device 6, for example a bell mouth, sucks in the oil mist generated during the cleaning process and sends the oil mist to the cleaning device 7, so that the oil mist is separated, and the generated diesel oil is sent to the first oil tank 211.
In summary, the above-mentioned embodiments are only preferred embodiments of the present invention, and all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the present invention.
Claims (6)
1. An automated gear washing machine comprising:
the device comprises a rack (1), wherein a cavity is formed in the rack (1);
the device A comprises an oil conveying device (2), an air pipe (3) and a product fixing device (4), wherein the oil conveying device (2) comprises an oil tank, an oil pump and an oil pipe (23), the oil tank and the oil pump are positioned at the lower part of a cavity, the product fixing device (4) is positioned above the oil tank, and the oil pipe (23) is arranged in parallel with the air pipe (3) and is positioned above the product fixing device (4); the oil tank comprises a first oil tank (211) and a second oil tank (212), the first oil tank (211) and the second oil tank (212) are arranged in parallel and are separated by a partition plate (53), the oil pump comprises a first oil pump (221) and a second oil pump (222), the first oil pump (221) and the second oil pump (222) are arranged in parallel, the oil pipe (23) comprises a first oil pipe (231) and a second oil pipe (232), and the first oil pipe (231) and the second oil pipe (232) are arranged in parallel; the air pipe (3) comprises a first air pipe (31) and a second air pipe (32), and the first air pipe (31) and the second air pipe (32) are parallel;
the upper end of the isolation plate (53) is further provided with a first fixed seat (54), two ends of the first fixed seat (54) are respectively provided with a second fixed seat (55) and a third fixed seat (56), a rotating shaft (57) is arranged between the second fixed seat (55) and the third fixed seat (56), two ends of the rotating shaft (57) are sleeved with a first rotating block (58) and a second rotating block (59), and the first rotating block (58) and the second rotating block (59) are respectively fixed with two ends of the hopper (52);
the upper ends of the air pipe (3) and the oil pipe (23) are also fixed with in-place sensors, and the front side and the rear side of the cavity are respectively provided with a first in-place inductive switch and a second in-place inductive switch;
the device B comprises a recovery device (5), a suction device (6) and a purification device (7), wherein the suction device (6) comprises a bell mouth and a suction tube, the bell mouth is higher than the product fixing device (4) and is positioned on the rear side of the rack (1), one end of the suction tube is connected with the bell mouth, the other end of the suction tube is connected with the purification device (7), the purification device (7) is used for separating oil mist generated in the cleaning process, the recovery device (5) comprises a hopper (51) and a hopper (52), the hopper (51) is positioned below the product fixing device (4), and the hopper (52) is positioned below the hopper (51);
a control section (8) including a first driving device (81) and an operation panel, the first driving device (81) being used for controlling the device B;
in the first-stage cleaning process, the first driving device (81) drives the rotating shaft (57) to rotate so that the first rotating block (58) and the second rotating block (59) rotate to drive the hopper (52) to rotate, so that the outlet end of the hopper (52) is turned to the first oil tank (211); the first oil pump (221) extracts diesel oil from the first oil tank (211), sprays the diesel oil onto the gear through the first oil pipe (231) and can drive the sprayed gear to rotate, the first oil pipe (231) moves and starts from the first in-place induction switch with the in-place sensor, and reversely reaches the first in-place induction switch after reaching the second in-place induction switch so as to finish a diesel oil cleaning process; then, the first oil pipe (231) is closed, the first air pipe (31) is started, the gear is blown and can be driven to rotate, the first air pipe (31) moves to start from the first in-place inductive switch by the in-place sensor, and the first in-place inductive switch is reversely reached after the first air pipe reaches the second in-place inductive switch, so that a primary blowing process is realized; the blowing process is five times;
in the second-stage cleaning process, the first driving device (81) drives the rotating shaft (57) to rotate so that the first rotating block (58) and the second rotating block (59) rotate to drive the hopper (52) to rotate, so that the outlet end of the hopper (52) is turned to the second oil tank (212), the second oil pump (222) extracts diesel oil from the second oil tank (212), sprays the diesel oil onto the gear through the second oil pipe (232) and can drive the sprayed gear to rotate, the second oil pipe (232) moves and starts from the first in-place inductive switch with the in-place sensor, and reversely reaches the first in-place inductive switch after reaching the second in-place inductive switch so as to finish the diesel oil cleaning process; and then, the second oil pipe (232) is closed, the second air pipe (32) is started, the gear is subjected to an air blowing process and can be driven to rotate, the second air pipe (32) moves and starts from the first in-place inductive switch by the in-place inductor, and the air is blown once after arriving at the second in-place inductive switch and reversely arrives at the first in-place inductive switch, wherein the air blowing process is performed five times.
2. An automated gear washing machine as claimed in claim 1, wherein: the second fixing seat (55) is further provided with a groove, a rack (101) is arranged in the groove, the rack (101) can slide in the groove, a first gear (102) is arranged above the rack (101), the first gear (102) is connected with the rack (101) in a matched mode, and the first gear (102) is connected with the rotating shaft (57) in a matched mode.
3. An automated gear washing machine as claimed in claim 2, wherein: the first driving device (81) is fixed with the rack (101) and used for controlling the rack (101) to slide.
4. An automated gear washing machine according to claim 1, wherein: the lower ends of the air pipe (3) and the oil pipe (23) are provided with a supporting plate, the supporting plate is positioned above the oil pump, the lower end of the supporting plate is provided with a screw rod sleeved with a connecting block, and the connecting block is fixedly connected with the supporting plate.
5. An automated gear washing machine according to claim 4, wherein: one end of the screw rod is also connected with a motor (27).
6. An automated gear washing machine according to claim 1, wherein: the operation screen is arranged on the frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810833290.6A CN110116113B (en) | 2018-07-26 | 2018-07-26 | Automatic gear cleaning machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810833290.6A CN110116113B (en) | 2018-07-26 | 2018-07-26 | Automatic gear cleaning machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110116113A CN110116113A (en) | 2019-08-13 |
| CN110116113B true CN110116113B (en) | 2021-10-29 |
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ID=67519734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810833290.6A Active CN110116113B (en) | 2018-07-26 | 2018-07-26 | Automatic gear cleaning machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110116113B (en) |
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| CN107537687A (en) * | 2017-09-06 | 2018-01-05 | 田建珍 | A kind of batch (-type) mineral products iron ores particle concentration equipment |
| CN207188330U (en) * | 2017-08-29 | 2018-04-06 | 贵阳市第六医院有限公司 | A kind of medical cleaning sterilizing device of convenient use |
| CN207521984U (en) * | 2017-11-24 | 2018-06-22 | 无锡市喜德金属科技有限公司 | Welding tooling assists turnover device |
| CN207563337U (en) * | 2017-11-13 | 2018-07-03 | 陕西航天机电环境工程设计院有限责任公司 | A kind of cleaning machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993001008A1 (en) * | 1991-07-05 | 1993-01-21 | Soichiro Yamamoto | Parts washer |
| CN102397847A (en) * | 2010-09-10 | 2012-04-04 | 李世武 | Cleaning machine for dirty marks on screens |
| CN201862592U (en) * | 2010-11-25 | 2011-06-15 | 山东高密润达机油泵有限公司 | Automatic part cleaning machine |
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| CN105834161A (en) * | 2016-06-16 | 2016-08-10 | 湖北省新石器电陶科技有限公司 | Full automatic cleaning machine for vacuum switch tubes |
| CN206535811U (en) * | 2017-02-16 | 2017-10-03 | 深圳市德瑞安精密清洗设备有限公司 | Rotary spray cleaning machine |
| CN207188330U (en) * | 2017-08-29 | 2018-04-06 | 贵阳市第六医院有限公司 | A kind of medical cleaning sterilizing device of convenient use |
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| CN207521984U (en) * | 2017-11-24 | 2018-06-22 | 无锡市喜德金属科技有限公司 | Welding tooling assists turnover device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110116113A (en) | 2019-08-13 |
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