CN108443390A - A kind of production of electronic components shock absorption buffering mechanism - Google Patents
A kind of production of electronic components shock absorption buffering mechanism Download PDFInfo
- Publication number
- CN108443390A CN108443390A CN201810442362.4A CN201810442362A CN108443390A CN 108443390 A CN108443390 A CN 108443390A CN 201810442362 A CN201810442362 A CN 201810442362A CN 108443390 A CN108443390 A CN 108443390A
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- CN
- China
- Prior art keywords
- damping
- piston
- electronic components
- production
- shock absorption
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
- F16F9/19—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein with a single cylinder and of single-tube type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F6/00—Magnetic springs; Fluid magnetic springs, i.e. magnetic spring combined with a fluid
- F16F6/005—Magnetic springs; Fluid magnetic springs, i.e. magnetic spring combined with a fluid using permanent magnets only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a kind of production of electronic components shock absorption buffering mechanisms, including pedestal, the first damping device, main supporting table, right telescopic rod and left telescopic rod, it is characterised in that：It is welded and fixed on the pedestal and the first damping device is installed, it is installed with main supporting table on the upside of the top board, the downside center of the main supporting table is installed with piston rod C, the base upper surface center is mounted by means of screws with holder, internal stent is equipped with third damping chamber, and third damping intracavitary portion is slidably fitted with piston C.The noise problem during production of electronic components is effectively avoided, the health of staff is protected to greatly improve the effect of damping, buffering by the above multi-buffer damping.
Description
Technical field
The present invention relates to electronic field, specifically a kind of production of electronic components shock absorption buffering mechanism.
Background technology
Electronic component is the basis for forming electronic product, understands the type of common electronic component, properity and can be just
Really select is to learn, grasp the basic of electronic technology.Common electronic component has：Resistance, capacitance, inductance, potentiometer, transformer
Deng for mounting means, conventional mounting (also known as through-hole dress i.e. DI P) being divided at present and surface is installed two major classes and (is also known as
SMT or SMD).Triode, diode are known as electronic device.
Corresponding production instrument is often used in production of electronic components, production instrument will produce largely in process
Noise, seriously affect the health of operating personnel.
Invention content
The purpose of the present invention is to provide a kind of production of electronic components shock absorption buffering mechanisms, to solve above-mentioned background technology
The problem of middle proposition.
To achieve the above object, the present invention provides the following technical solutions：
A kind of production of electronic components shock absorption buffering mechanism, including it is pedestal, the first damping device, main supporting table, right flexible
Bar and left telescopic rod are welded and fixed on the pedestal and are equipped with the first damping device, and the first damping device inner hub location is opened
There are the first damping chamber, the first damping intracavitary portion to be slidably fitted with piston A, if being provided at left and right sides of the first damping chamber lower part
Group stomata is done, ventilation channel is also provided on first damping device, piston rod A, the piston are welded on the upside of the piston A
Top board is fixedly connected with by screw on bar A, piston rod B, B points of piston rod are also mounted by means of screws on the downside of top board
Not Wei Yu piston rod A the left and right sides, be additionally provided with the second damping chamber, the second damping intracavitary at left and right sides of first damping device
Portion is slidably fitted with the other side piston B, piston B and piston rod B and is weldingly connected, and is also installed on the downside of the piston B several
Magnet in group, the second damping bottom of chamber portion are also installed with magnet under several groups；It is installed with main branch on the upside of the top board
Platform is supportted, the downside center of the main supporting table is installed with piston rod C, and the base upper surface center passes through spiral shell
Nail is installed with holder, and internal stent is equipped with third damping chamber, and third damping intracavitary portion is slidably fitted with piston C.
As a further solution of the present invention：First is connected on the downside of the piston A between the first damping bottom of chamber portion to subtract
Shake spring.
As further scheme of the invention：The stomata is placed equidistant between circular through hole and each group stomata.
As further scheme of the invention：The ventilation channel side is connected to stomata, ventilation the channel other side with
External world's connection.
As further scheme of the invention：The piston rod A is straight up and between the first damping device shell
It is slidably connected.
As further scheme of the invention：The upper magnet is corresponding with lower magnet, and upper magnet and lower pole of magnet
Property is identical.
It is bolted to connection between main supporting table and top board as described in the present invention further scheme.
As further scheme of the invention：It is fixed and is connected by tapping screw between the piston rod C and main supporting table
It connects.
As further scheme of the invention：Is connected between the downside and third damping bottom of chamber portion of the piston C
Two damping springs, the second damping spring are provided with three to four groups.
As further scheme of the invention：It is respectively articulated with left telescopic rod and the right side at left and right sides of the piston rod C
The other end of telescopic rod, left telescopic rod and right telescopic rod is also hingedly mounted on holder.
Compared with prior art, the beneficial effects of the invention are as follows：When top board is under pressure, to drive piston rod A
It is pushed with piston rod B, piston rod A bands piston A is moved downward, since the effect of the first damping spring is made to play damping
With, while during piston A declines, the air in the first damping chamber middle and lower part cavity is oppressed by stomata and by taking a breath
Channel discharges, and piston A simultaneously gradually blocks stomata during declining, and causes the quantity of stomata fewer and fewer, from
And keep the speed of discharge gas slower and slower, to effectively avoid piston A declines are too fast from leading to the deformation of the first damping spring, influence
Service life of first damping spring, while when piston A is in rebound, needing from ambient inlet air, due to stomata negligible amounts, from
And it can also play the role of slowly springing back；While decline also piston rod B can decline top board, and piston rod B, which drives, to live
Plug B is moved downward, to which the gas inside the upper magnet of compression is to play the role of buffering, while upper magnet and lower magnet polarities
It is identical also to play the role of damping, buffering to keep upper magnet and lower magnet mutually exclusive, to further increase buffering effect
Fruit；When top board receives pressure, while it being pressed down against piston rod C, the downward pressurizing piston C of piston rod C, while under piston C
Side is equipped with the second damping spring, plays the role of damping, buffering, while right telescopic rod and left telescopic rod can also play damping, buffering
Effect production of electronic components mistake to greatly improve the effect of damping, buffering, is effectively avoided by the above multi-buffer damping
Noise problem in journey protects the health of staff.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of production of electronic components shock absorption buffering mechanism.
Fig. 2 is a kind of structural schematic diagram of the first damping device in production of electronic components shock absorption buffering mechanism.
Fig. 3 is the structural schematic diagram that the first portions damping device A amplify in a kind of production of electronic components shock absorption buffering mechanism.
In figure：1- pedestals, the first damping devices of 2-, the first dampings of 3- chamber, the first damping springs of 4-, 5- piston A, 6- pistons
Bar A, 7- top board, 8- stomatas, 9- ventilation channel, the second damping chamber of 10- piston rods B, 11-, the upper magnet of 12- pistons B, 13-,
The main supporting table of magnet, 15-, 16- piston rod C, 17- holder, 18- third dampings chamber, the second damping bullet of 19- pistons C, 20- under 14-
The right telescopic rod of spring, 21-, the left telescopic rods of 22-.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig.1-3, a kind of production of electronic components shock absorption buffering mechanism, including it is pedestal 1, the first damping device 2, main
Supporting table 15, right telescopic rod 21 and left telescopic rod 22 are welded and fixed on the pedestal 1 and are equipped with the first damping device 2, and first subtracts
Shake 2 inner hub location of device is provided with the first damping chamber 3, and 3 internal slide of the first damping chamber is equipped with piston A5, the downsides piston A5
The first damping spring 4 is connected between 3 bottom of the first damping chamber, if being provided at left and right sides of 3 lower part of the first damping chamber
Dry group stomata 8, stomata 8 are placed equidistant between circular through hole and each group stomata 8, are also provided with and change on first damping device 2
Gas channel 9, ventilation 9 side of channel are connected to stomata 8, and ventilation 9 other side of channel is in communication with the outside, welding on the upside of the piston A5
There are piston rod A6, piston rod A6 to be slidably connected straight up and between 2 shell of the first damping device, leads on the piston rod A6
It crosses screw and is fixedly connected with top board 7,7 downside of top board is also mounted by means of screws with piston rod B10, B10 points of piston rod
Not Wei Yu piston rod A6 the left and right sides, the left and right sides of first damping device 2 is additionally provided with the second damping chamber 11, the second damping
11 internal slide of chamber is equipped with the other side piston B12, piston B12 and piston rod B10 and is weldingly connected, on the downside of the piston B12 also
Magnet 13 in several groups are installed with, 11 bottom of the second damping chamber is also installed with magnet 14 under several groups, upper magnet 13
It is corresponding with lower magnet 14, and upper magnet 13 is identical as lower 14 polarity of magnet；When top board 7 is under pressure, to drive work
Stopper rod A6 and piston rod B10 is pushed, and piston rod A6 bands piston A5 is moved downward, due to the first damping spring 4 effect to
Cushioning effect is played, while during piston A5 declines, the air oppressed in 3 middle and lower part cavity of the first damping chamber passes through gas
Hole 8 is simultaneously discharged by ventilation channel 9, and piston A5 simultaneously gradually blocks stomata 8 during declining, and leads to stomata 8
Quantity it is fewer and fewer, to keep the speed of discharge gas slower and slower, too fast lead to the to effectively avoid piston A5 from declining
One damping spring 4 deforms, and influences the service life of the first damping spring 4, while when piston A5 is in rebound, needs empty from external world's sucking
Gas, due to 8 negligible amounts of stomata, to can also play the role of slowly springing back；Top board 7 can also make piston rod while decline
B10 declines, and piston rod B10 drives band piston B12 to move downward, so that the gas compressed inside upper magnet 13 is slow to play
The effect of punching, while upper magnet 13 is identical as lower 14 polarity of magnet to keep upper magnet 13 and lower magnet 14 mutually exclusive, also can
Play the role of damping, buffering, to further increase buffering effect.
7 upside of the top board is installed with main supporting table 15, solid by bolt between main supporting table 15 and top board 7
The downside center of fixed connection, the main supporting table 15 is installed with piston rod C16, piston rod C16 and main supporting table 15
Between be fixedly connected by tapping screw, 1 upper surface center of the pedestal is mounted by means of screws with holder 17, holder
17 are internally provided with third damping chamber 18, and 18 internal slide of third damping chamber is equipped with piston C19, the downside of piston C19 and third
The second damping spring 20 is connected between 18 bottom of damping chamber, the second damping spring 20 is provided with three to four groups, the piston rod
Left telescopic rod 22 and right telescopic rod 21, the other end of left telescopic rod 22 and right telescopic rod 21 have been respectively articulated at left and right sides of C16
It is also hingedly mounted on holder 17, when top board 7 receives pressure, while being pressed down against piston rod C16, piston rod C16 is downward
Pressurizing piston C19, while the downside of piston C19 is equipped with the second damping spring 20, plays the role of damping, buffering, while right flexible
Bar 21 and left telescopic rod 22 can also play the role of damping, buffering, by the above multi-buffer damping, to greatly improve damping
The effect of buffering effectively avoids the noise problem during production of electronic components, protects the health of staff.
The present invention operation principle be：When top board 7 is under pressure, to drive under piston rod A6 and piston rod B10
Pressure, piston rod A6 band piston A5 are moved downward, due to the effect of the first damping spring 4 to play cushioning effect, while
During piston A5 declines, the air in 3 middle and lower part cavity of the first damping chamber is oppressed by stomata 8 and by ventilation channel 9
It discharging, piston A5 simultaneously gradually blocks stomata 8 during declining, and causes the quantity of stomata 8 fewer and fewer, to
Keep the speed of discharge gas slower and slower, to effectively avoid piston A5 declines are too fast the first damping spring 4 is caused to deform, influences
Service life of first damping spring 4, while when piston A5 is in rebound, needing from ambient inlet air, due to 8 quantity of stomata compared with
It is few, to can also play the role of slowly springing back；While decline also piston rod B10 can decline top board 7, piston rod B10
Band piston B12 is driven to move downward, to which the gas inside compression above magnet 13 is to play the role of buffering, while upper magnetic
Iron 13 is identical as lower 14 polarity of magnet to keep upper magnet 13 and lower magnet 14 mutually exclusive, can also play the work of damping, buffering
With to further increase buffering effect；When top board 7 receives pressure, while it being pressed down against piston rod C16, piston rod C16
Downward pressurizing piston C19, while the downside of piston C19 is equipped with the second damping spring 20, plays the role of damping, buffering, while right
Telescopic rod 21 and left telescopic rod 22 can also play the role of damping, buffering, by the above multi-buffer damping, to greatly improve
The effect of damping, buffering effectively avoids the noise problem during production of electronic components, protects the health of staff.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (10)
1. a kind of production of electronic components shock absorption buffering mechanism, including pedestal (1), the first damping device (2), main supporting table
(15), right telescopic rod (21) and left telescopic rod (22), it is characterised in that：It is welded and fixed on the pedestal (1) and is equipped with first and subtracts
Device (2) is shaken, the first damping device (2) inner hub location is provided with the first damping chamber (3), first damping chamber (3) internal slide
Piston A (5) is installed, several groups stomata (8), first damping are provided at left and right sides of the first damping chamber (3) lower part
It is also provided with ventilation channel (9) on device (2), is welded with piston rod A (6) on the upside of the piston A (5), on the piston rod A (6)
It is fixedly connected with top board (7) by screw, piston rod B (10), piston are also mounted by means of screws on the downside of top board (7)
Bar B (10) is located at the left and right sides of (6) piston rod A, and the second damping is additionally provided at left and right sides of first damping device (2)
Chamber (11), second damping chamber (11) internal slide are equipped with piston B (12), and piston B (12) is welded with piston rod B (10) other side
It is connected, magnet in several groups (13), the also fixed peace in second damping chamber (11) bottom is also installed on the downside of the piston B (12)
Equipped with magnet under several groups (14)；It is installed with main supporting table (15), the main supporting table (15) on the upside of the top board (7)
Downside center be installed with piston rod C (16), pedestal (1) the upper surface center is fixedly mounted by screw
There are holder (17), holder (17) to be internally provided with third damping chamber (18), third damping chamber (18) internal slide is equipped with piston C
(19)。
2. a kind of production of electronic components shock absorption buffering mechanism according to claim 1, it is characterised in that：The piston A
(5) it is connected with the first damping spring (4) between downside and first damping chamber (3) bottom.
3. a kind of production of electronic components shock absorption buffering mechanism according to claim 1, it is characterised in that：The stomata
(8) it is placed equidistant between circular through hole and each group stomata (8).
4. a kind of production of electronic components shock absorption buffering mechanism according to claim 1, it is characterised in that：The ventilation is logical
Road (9) side is connected to stomata (8), and ventilation channel (9) other side is in communication with the outside.
5. a kind of production of electronic components shock absorption buffering mechanism according to claim 1, it is characterised in that：The piston rod
A (6) is slidably connected straight up and between the first damping device (2) shell.
6. a kind of production of electronic components shock absorption buffering mechanism according to claim 1, it is characterised in that：The upper magnet
(13) corresponding with lower magnet (14), and upper magnet (13) is identical as lower magnet (14) polarity.
7. a kind of production of electronic components shock absorption buffering mechanism according to claim 1, it is characterised in that：The main support
It is bolted to connection between platform (15) and top board (7).
8. a kind of production of electronic components shock absorption buffering mechanism according to claim 1, it is characterised in that：The piston rod
It is fixedly connected by tapping screw between C (16) and main supporting table (15).
9. a kind of production of electronic components shock absorption buffering mechanism according to claim 1, it is characterised in that：The piston C
(19) the second damping spring (20), the second damping spring (20) setting are connected between downside and third damping chamber (18) bottom
There are three to four groups.
10. a kind of production of electronic components shock absorption buffering mechanism according to claim 1, it is characterised in that：The piston
Left telescopic rod (22) and right telescopic rod (21), left telescopic rod (22) and right telescopic rod have been respectively articulated at left and right sides of bar C (16)
(21) the other end is also hingedly mounted on holder (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810442362.4A CN108443390A (en) | 2018-05-10 | 2018-05-10 | A kind of production of electronic components shock absorption buffering mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810442362.4A CN108443390A (en) | 2018-05-10 | 2018-05-10 | A kind of production of electronic components shock absorption buffering mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108443390A true CN108443390A (en) | 2018-08-24 |
Family
ID=63202857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810442362.4A Pending CN108443390A (en) | 2018-05-10 | 2018-05-10 | A kind of production of electronic components shock absorption buffering mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108443390A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110560573A (en) * | 2019-10-11 | 2019-12-13 | 顾丽娟 | sheet metal stamping device with good heat dissipation effect |
| CN110778643A (en) * | 2019-11-14 | 2020-02-11 | 徐州市康恒机械有限公司 | Protection device for engineering machinery |
| CN110811914A (en) * | 2019-12-09 | 2020-02-21 | 中南百草原集团有限公司 | Method for extracting sperm from strong cattle |
| CN111110393A (en) * | 2019-12-09 | 2020-05-08 | 中南百草原集团有限公司 | Bovine semen extraction method |
| CN114893532A (en) * | 2022-04-24 | 2022-08-12 | 江苏科曼赛特减振器有限公司 | Shock absorber with magnetic spring |
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| CN105278636A (en) * | 2015-10-28 | 2016-01-27 | 林荣耀 | Computer equipment transporter |
| CN107202225A (en) * | 2017-06-06 | 2017-09-26 | 于法周 | A kind of adjustable for height train axle process equipment base |
| CN206592437U (en) * | 2016-10-17 | 2017-10-27 | 新昌县镜岭镇胜泰轴承配件厂 | A kind of bearing block with shock-absorbing function |
| CN207225283U (en) * | 2017-09-13 | 2018-04-13 | 承德石油高等专科学校 | A kind of automobile buffer beam with slowly rebound |
| CN207278772U (en) * | 2017-08-21 | 2018-04-27 | 昆明市农业机械技术推广站 | A kind of dual vibration damper for agricultural machinery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105278636A (en) * | 2015-10-28 | 2016-01-27 | 林荣耀 | Computer equipment transporter |
| CN206592437U (en) * | 2016-10-17 | 2017-10-27 | 新昌县镜岭镇胜泰轴承配件厂 | A kind of bearing block with shock-absorbing function |
| CN107202225A (en) * | 2017-06-06 | 2017-09-26 | 于法周 | A kind of adjustable for height train axle process equipment base |
| CN207278772U (en) * | 2017-08-21 | 2018-04-27 | 昆明市农业机械技术推广站 | A kind of dual vibration damper for agricultural machinery |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110560573A (en) * | 2019-10-11 | 2019-12-13 | 顾丽娟 | sheet metal stamping device with good heat dissipation effect |
| CN110778643A (en) * | 2019-11-14 | 2020-02-11 | 徐州市康恒机械有限公司 | Protection device for engineering machinery |
| CN110811914A (en) * | 2019-12-09 | 2020-02-21 | 中南百草原集团有限公司 | Method for extracting sperm from strong cattle |
| CN111110393A (en) * | 2019-12-09 | 2020-05-08 | 中南百草原集团有限公司 | Bovine semen extraction method |
| CN110811914B (en) * | 2019-12-09 | 2022-01-11 | 中南百草原集团有限公司 | Method for extracting sperm from strong cattle |
| CN111110393B (en) * | 2019-12-09 | 2022-08-09 | 中南百草原集团有限公司 | Bovine semen extraction method |
| CN114893532A (en) * | 2022-04-24 | 2022-08-12 | 江苏科曼赛特减振器有限公司 | Shock absorber with magnetic spring |
| CN114893532B (en) * | 2022-04-24 | 2023-11-17 | 江苏科曼赛特减振器有限公司 | Shock absorber with magnetic spring |
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Application publication date: 20180824 |
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