CN110215936A - Testpieces lifting and liquid nitrogen case opening and closing device in high temperature and immersing in liquid nitrogen Alternating Test - Google Patents
Testpieces lifting and liquid nitrogen case opening and closing device in high temperature and immersing in liquid nitrogen Alternating Test Download PDFInfo
- Publication number
- CN110215936A CN110215936A CN201910490629.1A CN201910490629A CN110215936A CN 110215936 A CN110215936 A CN 110215936A CN 201910490629 A CN201910490629 A CN 201910490629A CN 110215936 A CN110215936 A CN 110215936A
- Authority
- CN
- China
- Prior art keywords
- liquid nitrogen
- upper cover
- testpieces
- slip lid
- drawstring
- Prior art date
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L1/00—Enclosures; Chambers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
Abstract
The invention discloses testpieces lifting and liquid nitrogen casees in a kind of high temperature and immersing in liquid nitrogen Alternating Test to be opened and closed automatic device, including motor driven part, testpieces elevating mechanism, liquid nitrogen case switching mechanism three parts；Motor driving part point includes motor, shaft coupling, crossing cabin axis, retarder, output shaft；Testpieces elevating mechanism includes upper cover retracting wheel, upper cover reverse wheel, upper cover drawstring, upper cover, guide rod, suspension strop, testpieces；Liquid nitrogen case switching mechanism includes slip lid retracting wheel, slip lid drawstring, liquid nitrogen case, slideway, slip lid, slip lid reverse wheel, weight drawstring, weight；The present invention only drives and completes simultaneously testpieces lifting action and liquid nitrogen case on-off action with a motor and avoids colliding because of the problems such as software or sensor from hardware view；Without design electronic component in experiment casing, motor is designed in outside chamber as any temperature-sensitive components, facilitates observation and debugging and the reliability of whole device can be improved.
Description
Technical field
The invention belongs to environmental tests and space flight and aviation interleaving techniques field, and specifically, the invention mainly relates in height
The automatic device of testpieces lifting and the opening and closing of liquid nitrogen case is realized in mild immersing in liquid nitrogen Alternating Test.
Background technique
In environmental test and field of aerospace, thermal cycling test provides temperature alternating environment, is that examination Product environment is suitable
The important means of answering property.Thermal cycling test generally uses temperature and humidity cyclic test case to realize that wherein the acquisition of low temperature is often through machine
Tool refrigeration and auxiliary liquid nitrogen refrigerating, but -100 DEG C can only be generally arrived, it is feasible in engineering for the temperature lower than -150 DEG C
Relatively inexpensive method almost only has immersing in liquid nitrogen, needs to place liquid nitrogen case in temperature and humidity cyclic test case.And with space flight
The application environment of aeronautical product is increasingly extreme and severe, and lower than -150 DEG C of low temperature, demand is more and more in thermal cycling test,
The occasion for needing to be simulated low temperature environment with immersing in liquid nitrogen is also more and more.
But using in the thermal cycling test of immersing in liquid nitrogen simulation low temperature, testpieces needs to soak in hot environment and liquid nitrogen
Bubble environment constantly switches, and realizes that this process not only takes time and effort by manpower, but also due to needing to open temperature and humidity cyclic test
Case and liquid nitrogen case, may cause that temperature control failure, liquid nitrogen quickly volatilize, testpieces collides with, operator's scald frostbite or even liquid
The material risks such as nitrogen asphyxia.Therefore design it is a set of may be implemented testpieces lifting and liquid nitrogen case opening and closing automatic device very must
It wants, wherein testpieces lifting action realizes the offer ring of the hot environment and the offer of liquid nitrogen case that provide in temperature and humidity cyclic test case
It is switched fast in border, liquid nitrogen case on-off action then in order to ensure closing liquid nitrogen case in time after testpieces lifting in place, avoids liquid
Nitrogen excessively volatilizees.
Design the Major Difficulties of testpieces lifting and liquid nitrogen case opening and closing automatic device in high temperature and immersing in liquid nitrogen Alternating Test
It is how to coordinate testpieces lifting action and liquid nitrogen case on-off action and avoids colliding, in addition, in addition, temperature and humidity recycles
Bad environments in chamber, Ying Jinliang avoid the electronic components such as motor, sophisticated sensor from working in the case, to improve entire dress
The reliability set.
Summary of the invention
The purpose of the present invention is to provide testpieces lifting and liquid nitrogen casees in a kind of high temperature and immersing in liquid nitrogen Alternating Test to open
Close automatic device, wherein testpieces lifting action realizes that the hot environment provided in temperature and humidity cyclic test case and liquid nitrogen case mention
Switching in the immersion environment of confession, liquid nitrogen case on-off action then closes liquid nitrogen case in order to ensure timely after testpieces lifting in place,
Liquid nitrogen is avoided excessively to volatilize, the present invention coordinates testpieces lifting action and liquid nitrogen case on-off action from hardware design and avoids sending out
Raw collision, and motor is designed in outside chamber as any temperature-sensitive components in the present invention, is facilitated observation and debugging and be can be improved
The reliability of whole device.Core of the invention is to realize testpieces lifting action, liquid nitrogen case on-off action and above-mentioned two class
The designs such as hardware selection, spatial position and the connection relationship mutually coordinated are acted, and chamber and its temperature control and motor are matched
The control of set, the level monitoring of liquid nitrogen case and liquid supply device, the fixed installation of train etc. are not core of the invention, can be continued to use often
Rule technology, because the invention no longer elaborates these parts.
Present invention employs the following technical solutions:
Testpieces lifting and liquid nitrogen case are opened and closed automatic device, including motor driving part in high temperature and immersing in liquid nitrogen Alternating Test
Divide, testpieces elevating mechanism, liquid nitrogen case switching mechanism three parts, testpieces elevating mechanism and the setting of liquid nitrogen case switching mechanism are trying
Inside tryoff；The testpieces elevating mechanism furls wheel, upper cover reverse wheel, upper cover drawstring, upper cover, guide rod, suspension by upper cover
Rope, testpieces composition, wherein upper cover retracting wheel is connected on the power output shaft of motor driven part, on upper cover retracting wheel
It is wound with one end of upper cover drawstring, upper cover reverse wheel plays the role of the commutation to upper cover drawstring, makes the other end tune of upper cover drawstring
The whole top to upper cover is simultaneously connect with upper cover, and bondage has one end of suspension strop below upper cover, and other end bondage testpieces is described
One end of guide rod passes through upper cover and plays the guiding role to upper cover；The liquid nitrogen case switching mechanism is by slip lid retracting wheel, slip lid
Drawstring, liquid nitrogen case, slideway, slip lid, slip lid reverse wheel, weight drawstring, weight composition, wherein it is defeated to be connected in power for slip lid retracting wheel
On shaft, one end of slip lid drawstring is wound on slip lid retracting wheel, liquid nitrogen case and slideway are connected, and liquid nitrogen case side wall also secures institute
The other end for stating guide rod makes upper cover be movable to the purpose for playing sealing liquid nitrogen at liquid nitrogen box opening；Slideway and slip lid cooperate
And movable passageway is provided, slip lid be movable to played at liquid nitrogen box opening sealing liquid nitrogen purpose, slip lid in glide direction one
The other end bondage of side and slip lid drawstring, glide direction the other side and weight drawstring one end bondage, weight drawstring it is another
One end is connect with weight, and slip lid reverse wheel plays the role of the commutation to weight drawstring, make weight drawstring be adjusted to proper angle with
Weight connection.
Wherein, the motor driven part is made of motor, shaft coupling, crossing cabin axis, retarder, power output shaft, wherein
Motor provides power resources for whole device and power is transferred to crossing cabin axis by shaft coupling, and crossing cabin axis passes through experiment casing
Crossing cabin hole enters in chamber to be connected with exporting axis by retarder；
Wherein, the motor is operated according to the rule of " a direction operating, pause, opposite direction operating, pause ".
Wherein, the diameter of slip lid retracting wheel, the diameter of upper cover retracting wheel, slideway length, the adjustment of upper cover maximum lifting height
The testpieces lifting action and the liquid nitrogen case on-off action have specific velocity magnitude, reach and promote the testpieces
Slip lid is moved to again at the liquid nitrogen box opening after liquid nitrogen case out, and the testpieces is reduced at the liquid nitrogen box opening it
The effect that the preceding slip lid has been removed from the liquid nitrogen box opening thus is avoided that the testpieces lifting action and the liquid nitrogen
Case on-off action collides.
Wherein, slip lid retracting wheel, upper cover retracting wheel, the upper cover reverse wheel, the upper cover drawstring, described lead
Distinguish to the quantity of bar, the suspension strop, the slip lid drawstring, the slip lid reverse wheel, the weight drawstring, the weight
For one or more.
Wherein, the axis of the crossing cabin axis and the power output shaft can be parallel relation, vertical relation or random angle
Degree relationship.
Wherein, the upper cover drawstring, suspension strop, slip lid drawstring, weight drawstring can also be belt or chain material.
Wherein, the liquid nitrogen in the liquid nitrogen case, which also can according to need, changes other any liquid into.
Compared with prior art, the present invention having following prominent substantive distinguishing features and remarkable advantage:
The present invention only uses a motor while driving and completing testpieces lifting action and liquid nitrogen case on-off action, embodies
The thought of integrated design designs simple and practical；The present invention also from structure and mechanism design on coordinate testpieces lifting action and
Liquid nitrogen case on-off action simultaneously avoids colliding because of the problems such as software or sensor from hardware view；The present invention is in experiment casing
Electronic component is not designed, chamber vivo devices can be improved to the adaptability of the intracorporal harsh environment of chamber and reliable
Property；Motor is designed in outside chamber as any temperature-sensitive components in the present invention, facilitates observation and debugging and entire dress can be improved
The reliability set.
Detailed description of the invention
Fig. 1 is the schematic diagram that testpieces is raised to extreme higher position in the embodiment of the present invention 1；
Fig. 2 is the schematic diagram (hiding experiment casing) that testpieces is raised to extreme higher position in the embodiment of the present invention 1；
Fig. 3 is the schematic diagram that testpieces is reduced to extreme lower position in the embodiment of the present invention 1；
Fig. 4 is the schematic diagram (hiding experiment casing) that testpieces is reduced to extreme lower position in the embodiment of the present invention 1.
In figure: motor -1, shaft coupling -2, crossing cabin axis -3, retarder -4, output shaft -5, experiment casing -6, crossing cabin hole -7,
Upper cover retracting wheel -8, upper cover reverse wheel -9, upper cover drawstring -10, upper cover -11, guide rod -12, suspension strop -13, testpieces -14,
Slip lid retracting wheel -15, slip lid drawstring -16, liquid nitrogen case -17, slideway -18, slip lid -19, slip lid reverse wheel -20, weight drawstring -
21, weight -22.
Specific embodiment
The principle of the present invention, structure, feature are further detailed with reference to the accompanying drawing.
With reference to FIG. 1 to FIG. 4, embodiment shows testpieces lifting and liquid in a kind of high temperature and immersing in liquid nitrogen Alternating Test
Nitrogenous hood is opened and closed automatic device, including motor driven part, testpieces elevating mechanism, liquid nitrogen case switching mechanism three parts；The electricity
Machine drive part is made of motor 1, shaft coupling 2, crossing cabin axis 3, retarder 4, output shaft 5, wherein the motor 1 is whole device
Power resources are provided and power is transferred to by the crossing cabin axis 3 by the shaft coupling 2, the crossing cabin axis 3 passes through experiment casing 6
Crossing cabin hole 7 enter in chamber and connect with the output shaft 5 by the retarder 4；The testpieces elevating mechanism is by upper
Lid retracting wheel 8, upper cover reverse wheel 9, upper cover drawstring 10, upper cover 11, guide rod 12, suspension strop 13, testpieces 14 form, wherein institute
It states upper cover retracting wheel 8 to be connected on the output shaft 5, one end of the upper cover drawstring 10 is wound on the upper cover retracting wheel 8,
The upper cover reverse wheel 9 plays the role of the commutation to the upper cover drawstring 10, is adjusted to the other end of the upper cover drawstring 10
The top of the upper cover 11 is simultaneously connect with the upper cover 11, and the 11 lower section bondage of upper cover has one end of the suspension strop 13, institute
13 other end bondage testpieces 14 of suspension strop is stated, one end of the guide rod 12 passes through the upper cover 11 and plays to the upper cover 11
Guiding role；The liquid nitrogen case switching mechanism furls wheel 15, slip lid drawstring 16, liquid nitrogen case 17, slideway 18, slip lid by slip lid
19, slip lid reverse wheel 20, weight drawstring 21, weight 22 form, wherein slip lid retracting wheel 15 is connected in the output shaft 5
On, be wound with one end of the slip lid drawstring 16 on slip lid retracting wheel 15, the liquid nitrogen case 17 for store liquid nitrogen and with
The slideway 18 is connected, and 17 side wall of liquid nitrogen case also secures the other end of the guide rod 12, makes the upper cover 11 can be with
It is moved to the purpose that 17 opening of liquid nitrogen case plays sealing liquid nitrogen；The slideway 18, which matches to merge with the slip lid 19, provides shifting
Dynamic channel, 17 opening of liquid nitrogen case that the slip lid 19 is movable to play the purpose of sealing liquid nitrogen, and the slip lid 19 is in sliding side
To side and the slip lid drawstring 16 other end bondage, glide direction the other side and the weight drawstring 21 one end
Bondage, the other end of the weight drawstring 21 are connect with the weight 22, and the slip lid reverse wheel 20, which plays, draws the weight
The commutation effect of rope 21, makes the weight drawstring 21 be adjusted to proper angle and connect with the weight 22.
Wherein, the motor 1 is operated according to the rule of " a direction operating, pause, opposite direction operating, pause ".
Wherein, diameter, the diameter of upper cover retracting wheel 8, the cunning for taking turns 15 by rationally designing the slip lid retracting
18 length of road, 11 maximum lifting height of the upper cover can adjust 14 lifting action of testpieces and the liquid nitrogen case 17 opening and closing is dynamic
Make that there is specific velocity magnitude, reaches the slip lid 19 after the testpieces 14 is lifted out the liquid nitrogen case 17 and move again
To 17 opening of liquid nitrogen case, and the testpieces 14 is reduced to before 17 opening of liquid nitrogen case slip lid 19 from described
The effect that 17 opening of liquid nitrogen case is removed thus is avoided that 14 lifting action of testpieces and 17 on-off action of liquid nitrogen case hair
Raw collision.
Wherein, the slideway 18 is lubricated using ball, reduces the frictional resistance when slip lid 19 movement.
Wherein, the retarder 4, the slideway 18, the upper cover reverse wheel 9, the guide rod 12, slip lid commutation
It takes turns and is coated with lubricating grease at 20, reduce the frictional resistance for having relative motion position.
Wherein, slip lid retracting wheel 15 is 2, upper cover retracting wheel 8 is 2, the upper cover reverse wheel 9 is 4,
The upper cover drawstring 10 is 2, the guide rod 12 is 4, the suspension strop 13 is 2, the slip lid drawstring 16 is 2,
The slip lid reverse wheel 20 is 2, the weight drawstring 21 is 2, the weight 22 is 2, and such design can make to fill
It is more uniform and stable to set middle power transmitting, the testpieces 14, the upper cover 11, the slip lid 19 is avoided to shake, incline
Tiltedly and avoid the upper cover 11 that from cannot blocking 17 opening of liquid nitrogen case completely.
Wherein, the axis of the crossing cabin axis 3 and the output shaft 5 is vertical relation, and the retarder 4 subtracts for worm and gear
Fast device has self-locking effect, and the testpieces when motor suspends is avoided reversely motor to be pulled to rotate.
Although the detailed description and description of the specific embodiments of the present invention are given above, it should be noted that
We can carry out various equivalent changes and modification to above embodiment according to the concept of the present invention, and generated function is made
It, should all be within protection scope of the present invention when with the spirit still covered without departing from specification and attached drawing.
Claims (8)
1. testpieces lifting and liquid nitrogen case are opened and closed automatic device, including motor driving part in high temperature and immersing in liquid nitrogen Alternating Test
Divide, testpieces elevating mechanism, liquid nitrogen case switching mechanism three parts, testpieces elevating mechanism and the setting of liquid nitrogen case switching mechanism are trying
Inside tryoff；The testpieces elevating mechanism furls wheel, upper cover reverse wheel, upper cover drawstring, upper cover, guide rod, suspension by upper cover
Rope, testpieces composition, wherein upper cover retracting wheel is connected on the power output shaft of motor driven part, on upper cover retracting wheel
It is wound with one end of upper cover drawstring, upper cover reverse wheel plays the role of the commutation to upper cover drawstring, makes the other end tune of upper cover drawstring
The whole top to upper cover is simultaneously connect with upper cover, and bondage has one end of suspension strop below upper cover, and other end bondage testpieces is described
One end of guide rod passes through upper cover and plays the guiding role to upper cover；The liquid nitrogen case switching mechanism is by slip lid retracting wheel, slip lid
Drawstring, liquid nitrogen case, slideway, slip lid, slip lid reverse wheel, weight drawstring, weight composition, wherein it is defeated to be connected in power for slip lid retracting wheel
On shaft, one end of slip lid drawstring is wound on slip lid retracting wheel, liquid nitrogen case and slideway are connected, and liquid nitrogen case side wall also secures institute
The other end for stating guide rod makes upper cover be movable to the purpose for playing sealing liquid nitrogen at liquid nitrogen box opening；Slideway and slip lid cooperate
And movable passageway is provided, slip lid be movable to played at liquid nitrogen box opening sealing liquid nitrogen purpose, slip lid in glide direction one
The other end bondage of side and slip lid drawstring, glide direction the other side and weight drawstring one end bondage, weight drawstring it is another
One end is connect with weight, and slip lid reverse wheel plays the role of the commutation to weight drawstring, make weight drawstring be adjusted to proper angle with
Weight connection.
2. testpieces lifting and the automatic dress of liquid nitrogen case opening and closing in high temperature as described in claim 1 and immersing in liquid nitrogen Alternating Test
It sets, wherein the motor driven part is made of motor, shaft coupling, crossing cabin axis, retarder, power output shaft, wherein motor
Power resources are provided for whole device and power is transferred to by crossing cabin axis by shaft coupling, and crossing cabin axis passes through the crossing cabin of experiment casing
Hole enters in chamber to be connected with exporting axis by retarder.
3. testpieces lifting and the automatic dress of liquid nitrogen case opening and closing in high temperature as described in claim 1 and immersing in liquid nitrogen Alternating Test
It sets, wherein the motor is operated according to the rule of " a direction operating, pause, opposite direction operating, pause ".
4. testpieces lifting and the opening and closing of liquid nitrogen case in high temperature as described in any one of claims 1-3 and immersing in liquid nitrogen Alternating Test
Automatic device, wherein the diameter of slip lid retracting wheel, the diameter of upper cover retracting wheel, slideway length, the adjustment of upper cover maximum lifting height
The testpieces lifting action and the liquid nitrogen case on-off action have specific velocity magnitude, reach and promote the testpieces
Slip lid is moved to again at the liquid nitrogen box opening after liquid nitrogen case out, and the testpieces is reduced at the liquid nitrogen box opening it
The effect that the preceding slip lid has been removed from the liquid nitrogen box opening thus is avoided that the testpieces lifting action and the liquid nitrogen
Case on-off action collides.
5. testpieces lifting and the opening and closing of liquid nitrogen case in high temperature as described in any one of claims 1-3 and immersing in liquid nitrogen Alternating Test
Automatic device, wherein slip lid retracting wheel, upper cover retracting wheel, the upper cover reverse wheel, the upper cover drawstring, described
Guide rod, the suspension strop, the slip lid drawstring, the slip lid reverse wheel, the weight drawstring, the weight quantity divide equally
One or more are not.
6. testpieces lifting and the opening and closing of liquid nitrogen case in high temperature as described in any one of claims 1-3 and immersing in liquid nitrogen Alternating Test
Automatic device, wherein the axis of the crossing cabin axis and the output shaft is parallel relation, vertical relation or any angle relationship.
7. testpieces lifting and the opening and closing of liquid nitrogen case in high temperature as described in any one of claims 1-3 and immersing in liquid nitrogen Alternating Test
Automatic device, wherein the upper cover drawstring, suspension strop, slip lid drawstring, weight drawstring can also be belt or chain material.
8. testpieces lifting and the opening and closing of liquid nitrogen case in high temperature as described in any one of claims 1-3 and immersing in liquid nitrogen Alternating Test
Automatic device, wherein the liquid nitrogen in the liquid nitrogen case changes other any liquid into as needed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910490629.1A CN110215936B (en) | 2019-06-06 | 2019-06-06 | Device for lifting test piece and opening and closing liquid nitrogen box in high-temperature and liquid nitrogen soaking alternation test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910490629.1A CN110215936B (en) | 2019-06-06 | 2019-06-06 | Device for lifting test piece and opening and closing liquid nitrogen box in high-temperature and liquid nitrogen soaking alternation test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110215936A true CN110215936A (en) | 2019-09-10 |
| CN110215936B CN110215936B (en) | 2021-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910490629.1A Active CN110215936B (en) | 2019-06-06 | 2019-06-06 | Device for lifting test piece and opening and closing liquid nitrogen box in high-temperature and liquid nitrogen soaking alternation test |
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| CN (1) | CN110215936B (en) |
Cited By (2)
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| CN112276476A (en) * | 2020-11-09 | 2021-01-29 | 莫东强 | Liquid nitrogen cooling treatment equipment for engine cylinder sleeve |
| CN113466672A (en) * | 2021-09-06 | 2021-10-01 | 武汉盛为芯科技有限公司 | Ultra-low temperature laser chip aging detection device |
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| CN113466672A (en) * | 2021-09-06 | 2021-10-01 | 武汉盛为芯科技有限公司 | Ultra-low temperature laser chip aging detection device |
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| CN110215936B (en) | 2021-07-23 |
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