CN110501379A - A kind of bearing internal external lasso and roller contact thermal conductivity measuring system and measurement method - Google Patents
A kind of bearing internal external lasso and roller contact thermal conductivity measuring system and measurement method Download PDFInfo
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- CN110501379A CN110501379A CN201910397762.2A CN201910397762A CN110501379A CN 110501379 A CN110501379 A CN 110501379A CN 201910397762 A CN201910397762 A CN 201910397762A CN 110501379 A CN110501379 A CN 110501379A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
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Abstract
The invention discloses a kind of bearing internal external lassos and roller contact thermal conductivity measuring system and measurement method, heat-flow meter and lower heat-flow meter is respectively set in the contact position of the cylindrical roller and raceway of outer ring and inside race raceway, at least one receiving portion I is arranged in the raceway of outer ring at the upper heat-flow meter, for temperature element I to be arranged, the inside race raceway is arranged and the equal number of receiving portion II of described accommodation section I at the lower heat-flow meter, for temperature element II to be arranged, the lower surface of the inside race is connected with cooling back installation, heating element is arranged in the upper surface of the outer collar.Present apparatus structure is simple, design is reasonable, the variation of cylinder roller bearing heat flow is measured by hot-fluid, true cylinder roller bearing heat environment is simulated, while cooling back installation is provided with compression pump and throttle valve, controls cooling performance by coutroi velocity, this method is based on thermodynamic argument, the transfer mode of heat is analyzed, simple, great reference value is calculated.
Description
Technical field
The present invention relates to machinery fields, specifically, being related to a kind of bearing internal external lasso and roller contact thermal conductivity measuring system
And measurement method.
Background technique
Cylinder roller bearing is for example for lathe, such as turntable, protractor, main shaft bearing or similar application, wherein weight
What is wanted is high rigidity and high working speed.Cylinder roller bearing is for example implemented to two column cylinder roller bearings or using two
The cylinder roller bearing halfbody of the opposed installation of a single-column type constructs.Rolling element is guided by retainer, that is to say, that each
A ball is contained in the corresponding recess portion of retainer.Here, commonly used comb-shaped retainer, they have open recess portion, In
Ball can be caught in recess portion when equipment.Retainer usually guides on the edge or rolling element of inner ring or outer ring itself.On side
In the case that edge guides, the acting surface of additional processing edge side is needed.Furthermore corresponding structure space must be provided, to realize
Exterior guiding on a wherein edge.However this in corresponding design bearing there is not necessarily always.It is rolling
In the case that body guides, corresponding high-cost retainer structure is set, the retainer structure is just flexible and unstable originally
There is corresponding rolling element clamping part in the retainer recess portion of comb-shaped retainer.
When lathe works, cylinder roller bearing and machine tool chief axis friction generate a large amount of thermal energy, meeting after thermal energy accumulation
Have an adverse effect to bearing and even destroy, it is therefore necessary to research be made for the heat exchange property of cylinder roller bearing, to do
Corresponding heat dissipating method out.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of bearing internal external lasso and roller contact thermal conductivity measuring system, this
Apparatus structure is simple, and design rationally, the variation of angular contact ball bearing heat flow is measured by hot-fluid, simulates true corner connection
Ball bearing heat environment is touched, while cooling back installation is provided with compression pump and throttle valve, controls by coutroi velocity cold
But performance, the second purpose are to propose the measurement method based on the present apparatus, and this method is based on thermodynamic argument, analyze the biography of heat
Mode is passed, simple, great reference value is calculated.
The purpose of the present invention is what is be achieved through the following technical solutions:.
A kind of bearing internal external lasso and roller contact thermal conductivity measuring system, including cylinder roller bearing, the cylindrical roller
Bearing includes sequentially connected outer collar, cylindrical roller and inside race, and the raceway of outer ring and inside race raceway form use
In the space of setting cylindrical roller, heat is respectively set in the contact position of the cylindrical roller and raceway of outer ring and inside race raceway
At least one receiving portion I is arranged in flowmeter and lower heat-flow meter, the raceway of outer ring at the upper heat-flow meter, surveys for being arranged
Warm element I, the inside race raceway are arranged and the equal number of receiving portions II of described accommodation section I, use at the lower heat-flow meter
In setting temperature element II, the lower surface of the inside race is connected with cooling back installation, the upper surface setting of the outer collar
Heating element.
Further, the upper surface of the heating element is connected with insulating layer.
Further, the insulating layer, heating element, outer collar and inside race are closely connect by the realization of at least one connector
Touching.
Further, the connector includes 1 screw rod and at least two bolt.
Further, described accommodation section I and receiving portion II is welding hole.
Further, the cooling back installation includes the radiator and ring pipe that vertical direction is sequentially arranged, the annular
Pipe includes pond top and pond lower part in vertical direction, and the pond top is provided with compressor and throttle valve, the pond lower part setting
In cooling bay.
Further, nitrogen is set inside the ring pipe, water-ethylene glycol coolant liquid is set inside the cooling bay.
Further, the temperature element I and temperature element II are thermocouple.
Further, the measurement method specifically:
Step 1: the heat flow that upper heat-flow meter measures and the heat flow that lower heat-flow meter measures are made into poor, as Q；
Step 2: the temperature that temperature element I and temperature element II are measured makees poor, as Δ T；
Step 3: Q and Δ T are brought into formula one, find out coefficient of heat transfer Hc。
Further, the formula one are as follows:
Ac: the contact area of roller and inside race and outer collar.
The beneficial effects of the present invention are:
Present apparatus structure is simple, and design rationally, the variation of cylinder roller bearing heat flow is measured by hot-fluid, is simulated
True cylinder roller bearing heat environment, while cooling back installation is provided with compression pump and throttle valve, passes through coutroi velocity
And then cooling performance is controlled, this method is based on thermodynamic argument, analyzes the transfer mode of heat, calculates simple, great reference price
Value.
Other advantages, target and feature of the invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.Target and other advantages of the invention can be wanted by following specification and right
Book is sought to be achieved and obtained.
Detailed description of the invention
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
The detailed description of one step, in which:
Attached drawing 1 is schematic structural view of the invention；
Attached drawing 2 is this method flow chart；
Attached drawing 3 is the experiment value of stainless steel SS304 compared with simulation value；
Attached drawing 4 is the experiment value of carbon steel compared with simulation value.
Specific embodiment
Hereinafter reference will be made to the drawings, and a preferred embodiment of the present invention will be described in detail.It should be appreciated that preferred embodiment
Only for illustrating the present invention, rather than limiting the scope of protection of the present invention.
The invention proposes a kind of bearing internal external lassos and roller contact thermal conductivity measuring system, as shown in Figure 1, including cylinder
Roller bearing, cylinder roller bearing include sequentially connected outer collar 1, cylindrical roller 2 and inside race 3, raceway of outer ring 14 with
Inside race raceway 15 forms the space for cylindrical roller 2 to be arranged, cylindrical roller 2 and raceway of outer ring 14 and inside race raceway
15 contact position is respectively set heat-flow meter 4 and lower heat-flow meter 5, and the contact surface of cylindrical roller 2 and raceway of outer ring 14 is above to connect
The contact surface of contacting surface, cylindrical roller 2 and inside race raceway 15 is lower contact surface, and upper heat-flow meter 4 and lower heat-flow meter 5 are respectively used to examine
The heat flow of flow measurement excessively upper contact surface and lower contact surface, raceway of outer ring 14 are installed 6 welding holes at upper heat-flow meter 4, are used
In setting thermocouple 9, the temperature measured is denoted as T respectively1、T2、T3、T4、T5、T6, inside race raceway 15 pacifies at lower heat-flow meter 5
Dress and 6 welding holes, for thermocouple 9 to be arranged, the temperature measured is denoted as T respectively7、T8、T9、T10、T11And T12, welding hole it is straight
Diameter is 0.64mm, and depth is 2.5mm, and the distance that the thermocouple 9 of inside race 3 is popped one's head in apart from lower contact surface is not more than 0.5mm,
The thermocouple 10 of outer collar 1 is popped one's head in is not more than 0.5mm at a distance from upper contact surface, and heating element is arranged in the upper surface of outer collar 1,
The present embodiment is electric heater 6.
The lower surface of inside race 3 is connect by radiator 16 with cooling back installation, and cooling back installation includes ring pipe
12, ring pipe 12 includes pond top 121 and pond lower part 122 in vertical direction, and pond top 121 is provided with compressor 10 and throttle valve
11, pond lower part 122 is set in cooling bay 13, nitrogen is arranged inside ring pipe 12, setting water-ethylene glycol is cold inside cooling bay 13
But liquid.Compressor 10 is for providing the ring pipe power that 12 inside nitrogen recycles inside ring pipe 12, and throttle valve 11 is for adjusting
Save the flowing velocity of nitrogen, and then the exchange capability of heat of control loop cooling system.
As a further improvement, the upper surface of electric heater 6 is connected with insulating layer 7, the loss of heat is prevented.
As a further improvement, outer collar 1, inside race 3, insulating layer 7 are connected with electric heater 6 by 2 screw bolts
Part 8 connects, and outer collar 1, inside race 3, insulating layer 7 and electric heater 6 is made to be fixed as one, and connector 8 includes screw rod 81 and sets
The bolt 82 at 8 both ends of screw rod is set, screw rod 17 passes through outer collar 1, inside race 3, insulating layer 7 and electric heater 6, by adjusting spiral shell
Bolt 82 and then the compaction degree for adjusting outer collar 1 and inside race 3, the axial load applied by bolt 17 and screw rod 9, make inside race
3, outer collar 1, upper heat-flow meter 4, lower heat-flow meter 5 and cylindrical roller 2 fit closely together.
As a further improvement, for the accuracy of test result, when installation, the bottom end of thermocouple 9 is wound it is primary, with
Reduce the loss of thermal energy.
The invention also provides based on a kind of bearing internal external lasso and roller contact thermal conductivity measuring system as described above
Measurement method, measurement method specifically:
Step 1: making poor, as Q for the heat flow that upper heat-flow meter measures and the heat flow that lower heat-flow meter measures,
Q=QOutside-QIt is interior
Step 2: the temperature that temperature element I and temperature element II are measured makees poor, as Δ T；
Δ T=T1-T6+T2-T7+T3-T8+T4-T9+T5-T10+T11-T12
Step 3: Q and Δ T are brought into formula one, find out coefficient of heat transfer Hc
Ac: the contact area of cylindrical roller and inside race and outer collar.
I.e. are as follows:
Adjust throttle valve 11 aperture, continue to measure, and by weight of method as above carries out to get arrive the coefficient of heat transfer
Changing rule.Measurement result is as shown in Figures 3 and 4, in finite element modelling and experimental result, either carbon steel or stainless
Steel, thermal contact resistance and contact conductane increase with the increase of contact pressure.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of the technical program, should all be covered in the present invention
Scope of the claims in.
Claims (10)
1. a kind of bearing internal external lasso and roller contact thermal conductivity measuring system, including cylinder roller bearing, the cylindrical roller axis
It contracts and includes sequentially connected outer collar, cylindrical roller and inside race, the raceway of outer ring is formd with inside race raceway and is used for
The space of cylindrical roller is set, it is characterised in that: cylindrical roller contact with raceway of outer ring and inside race raceway punishment
At least one receiving portion I above She Zhi be set at the upper heat-flow meter for heat-flow meter and lower heat-flow meter, the raceway of outer ring,
For temperature element I to be arranged, the inside race raceway is arranged and the equal number of appearances of described accommodation section I at the lower heat-flow meter
Receive portion II, for being arranged temperature element II, the lower surface of the inside race is connected with cooling back installation, the outer collar it is upper
Heating element is arranged in surface.
2. a kind of bearing internal external lasso according to claim 1 and roller contact thermal conductivity measuring system, it is characterised in that: institute
The upper surface for stating heating element is connected with insulating layer.
3. a kind of bearing internal external lasso according to claim 2 and roller contact thermal conductivity measuring system, it is characterised in that: institute
It states insulating layer, heating element, outer collar and inside race and close contact is realized by least one connector.
4. a kind of bearing internal external lasso according to claim 3 and roller contact thermal conductivity measuring system, it is characterised in that: institute
Stating connector includes 1 screw rod and at least two bolt.
5. a kind of bearing internal external lasso according to claim 1 and roller contact thermal conductivity measuring system, it is characterised in that: institute
Stating receiving portion I and receiving portion II is welding hole.
6. a kind of bearing internal external lasso according to claim 1 and roller contact thermal conductivity measuring system, it is characterised in that: institute
Stating cooling back installation includes the radiator and ring pipe that vertical direction is sequentially arranged, and the ring pipe includes pond in vertical direction
Top and pond lower part, the pond top are provided with compressor and throttle valve, and the pond lower part is set in cooling bay.
7. a kind of bearing internal external lasso according to claim 6 and roller contact thermal conductivity measuring system, it is characterised in that: institute
It states and nitrogen is set inside ring pipe, water-ethylene glycol coolant liquid is set inside the cooling bay.
8. a kind of bearing internal external lasso according to claim 1 and roller contact thermal conductivity measuring system, it is characterised in that: institute
Stating temperature element I and temperature element II is thermocouple.
9. a kind of based on a kind of bearing internal external lasso a method as claimed in any one of claims 1-8 and roller contact thermal conductivity measuring system
Measurement method, it is characterised in that: the measurement method specifically:
Step 1: the heat flow that upper heat-flow meter measures and the heat flow that lower heat-flow meter measures are made into poor, as Q；
Step 2: the temperature that temperature element I and temperature element II are measured makees poor, as Δ T；
Step 3: Q and Δ T are brought into formula one, find out coefficient of heat transfer Hc。
10. the measurement method of a kind of bearing internal external lasso and roller contact thermal conductivity measuring system according to claim 9,
It is characterized in that: the formula one are as follows:
Ac: the contact area of roller and inside race and outer collar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910397762.2A CN110501379A (en) | 2019-05-14 | 2019-05-14 | A kind of bearing internal external lasso and roller contact thermal conductivity measuring system and measurement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910397762.2A CN110501379A (en) | 2019-05-14 | 2019-05-14 | A kind of bearing internal external lasso and roller contact thermal conductivity measuring system and measurement method |
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| Publication Number | Publication Date |
|---|---|
| CN110501379A true CN110501379A (en) | 2019-11-26 |
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ID=68585684
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910397762.2A Pending CN110501379A (en) | 2019-05-14 | 2019-05-14 | A kind of bearing internal external lasso and roller contact thermal conductivity measuring system and measurement method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112730511A (en) * | 2020-12-28 | 2021-04-30 | 合肥工业大学 | Detection device and method for measuring wall surface heat transfer coefficient of air duct |
Citations (5)
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| CN2833585Y (en) * | 2005-07-19 | 2006-11-01 | 东华大学 | Tester for heat conduction performance of protection fabric |
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| CN108828007A (en) * | 2018-08-31 | 2018-11-16 | 重庆大学 | A kind of annular face contacts surface interface contact conductane measuring device |
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2019
- 2019-05-14 CN CN201910397762.2A patent/CN110501379A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| CN2833585Y (en) * | 2005-07-19 | 2006-11-01 | 东华大学 | Tester for heat conduction performance of protection fabric |
| CN201212878Y (en) * | 2008-03-10 | 2009-03-25 | 中国农业大学 | Heat conducting coefficient measurement device |
| CN104535609A (en) * | 2014-12-26 | 2015-04-22 | 怡维怡橡胶研究院有限公司 | Device for determining heat-conductivity coefficient |
| CN108931551A (en) * | 2018-05-31 | 2018-12-04 | 重庆大学 | A kind of surface of solids engaging portion contact conductane measuring device |
| CN108828007A (en) * | 2018-08-31 | 2018-11-16 | 重庆大学 | A kind of annular face contacts surface interface contact conductane measuring device |
Non-Patent Citations (4)
| Title |
|---|
| JIALAN LIU 等: "Thermal contact resistance between bearing inner ring and shaft journal", 《INTERNATIONAL JOURNAL OF THERMAL SCIENCES》 * |
| KATSUHIKO NAKAJIMA: "Thermal contact resistance between balls and rings of a bearing under axial, radial, and combined loads", 《JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER》 * |
| RUIFENG DOU 等: "Effects of contact pressure, interface temperature, and surface roughness on thermal contact conductance between stainless steel surfaces under atmosphere condition", 《INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER》 * |
| 刘志全 等: "高速圆柱滚子轴承的热分析模型", 《机械科学与技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112730511A (en) * | 2020-12-28 | 2021-04-30 | 合肥工业大学 | Detection device and method for measuring wall surface heat transfer coefficient of air duct |
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Application publication date: 20191126 |
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