CN109540784B - Rock interface sliding friction coefficient measuring device - Google Patents
Rock interface sliding friction coefficient measuring device Download PDFInfo
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- CN109540784B CN109540784B CN201910027627.9A CN201910027627A CN109540784B CN 109540784 B CN109540784 B CN 109540784B CN 201910027627 A CN201910027627 A CN 201910027627A CN 109540784 B CN109540784 B CN 109540784B
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- walking device
- heater
- sample holder
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- sensor
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- 239000011435 rock Substances 0.000 title claims abstract description 43
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 3
- 230000004907 flux Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/02—Measuring coefficient of friction between materials
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a rock interface sliding friction coefficient measuring device, which belongs to the technical field of friction coefficient measurement and comprises an instrument shell, a heater, a temperature controller, a rock sample holder, a temperature sensor, a ball screw, a torque sensor, a motor, a feed screw, a pressurizing handle, a walking device shell, a walking device upper cover, a pressure sensor, an ice sample holder, a disc spring, a data recorder and a low-temperature test box.
Description
Technical Field
The invention relates to a device for measuring sliding friction coefficient of an iceberg interface, and belongs to the technical field of friction coefficient measurement.
Background
Glacier bottom slip is one of the important causes of glacier disasters caused by glacier jump. In addition, the reliability of the sea level ascent prediction model also depends largely on the sliding characteristics at the rock interface. However, the sliding characteristics of the iceberg interface obtained by in situ observation and measurement of drilling, tunneling, etc. have very large limitations in both time and space, which also makes the substrate sliding characteristics of the iceberg interface currently poorly known.
Disclosure of Invention
In order to solve the defects of the existing technology for measuring the sliding friction coefficient of the rock interface, the device is simple in structure and convenient to use, and can measure the sliding friction coefficient of the rock interface under the conditions of different pressures, temperatures, stratum conditions, geothermal flux and relative speeds.
The invention adopts the following technical scheme: an iceberg interface sliding friction coefficient measuring device, characterized by comprising: the device comprises an instrument shell, a heater, a temperature controller, a rock sample holder, a temperature sensor, a ball screw, a torque sensor, a motor, a light bar, a pressure screw, a pressure handle, a walking device shell, a walking device upper cover, a pressure sensor, an ice sample holder, a disc spring, a data recorder and a low-temperature test box, wherein the walking device upper cover is arranged on the walking device shell, and a threaded through hole is formed in the middle of the walking device upper cover; the pressure screw passes through a threaded through hole on the upper cover of the walking device and is in threaded connection with the threaded through hole, the upper end of the pressure screw is fixedly connected with the pressure handle, the pressure screw and the ice sample holder are coaxially arranged, and a pressure sensor is arranged between the lower end face of the pressure screw and the upper end face of the ice sample holder; the ice sample holder is in contact connection with the walking device shell through a disc spring, a temperature sensor is arranged on the ice sample holder, and the ice sample holder is used for holding an ice sample so that the ice sample and the walking device shell synchronously move; the walking device shell is arranged on the instrument shell through a ball screw and a feed beam; the heater is fixed on the instrument shell, and a temperature controller is arranged on the heater; the rock sample clamp is used for clamping the rock sample and the heater so that the rock sample is attached to the heater; an output shaft of the motor is connected with the ball screw through a torque sensor; the data recorder is respectively connected with the pressure sensor, the temperature sensor and the torque sensor through connecting wires;
the instrument shell, the heater, the temperature controller, the rock sample holder, the temperature sensor, the ball screw, the light bar, the pressurizing screw, the pressurizing handle, the walking device shell, the walking device upper cover, the pressure sensor, the ice sample holder and the disc spring are arranged in the low-temperature test box.
Further, the heater is a silicon rubber heater or a cast aluminum heater.
Wherein, the connecting wire for connecting pressure sensor is connected with pressure sensor through the central passageway of pressurization lead screw.
Through the design scheme, the invention has the following beneficial effects: the device for measuring the sliding friction coefficient of the rock interface can simulate the conditions of different rock thickness, geothermal flux, stratum condition, rock temperature and relative speed, and according to the definition of the sliding friction coefficient, the sliding friction coefficient of the rock interface under the pressure condition of the quasi-glacier substrate and the stratum condition is tested, so that the controllability of the test is improved, the test is comprehensive, the test cost is low, and the sliding characteristic of the rock interface can be truly reflected to meet the requirements of different glacier researches.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a undue limitation of the invention, in which:
FIG. 1 is a schematic diagram of a device for measuring sliding friction coefficient of an ice rock interface in an embodiment of the invention;
fig. 2 is a cross-sectional view taken along A-A of fig. 1.
The figures are marked as follows: 1-instrument shell, 2-heater, 3-temperature controller, 4-rock sample, 5-rock sample holder, 6-ice sample, 7-temperature sensor, 8-ball screw, 9-torque sensor, 10-motor, 11-light bar, 12-pressure screw, 13-pressure handle, 14-walking device shell, 15-walking device upper cover, 16-pressure sensor, 17-ice sample holder, 18-disc spring, 19-data recorder, 20-low temperature test box.
Detailed Description
In order to more clearly illustrate the present invention, the present invention will be further described with reference to preferred embodiments and the accompanying drawings. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and that this invention is not limited to the details given herein.
The invention provides a device for measuring sliding friction coefficient of an ice rock interface, which is shown in fig. 1 and 2, and comprises an instrument shell 1, a heater 2, a temperature controller 3, a rock sample holder 5, a temperature sensor 7, a ball screw 8, a torque sensor 9, a motor 10, a light bar 11, a pressurizing screw 12, a pressurizing handle 13, a walking device shell 14, a walking device upper cover 15, a pressure sensor 16, an ice sample holder 17, a disc spring 18, a data recorder 19 and a low-temperature test box 20, wherein the walking device upper cover 15 is arranged on the walking device shell 14, and a threaded through hole is formed in the middle of the walking device upper cover 15; the pressurizing lead screw 12 passes through a threaded through hole on the upper cover 15 of the walker and is in threaded connection with the threaded through hole, the upper end of the pressurizing lead screw 12 is fixedly connected with the pressurizing handle 13, the pressurizing lead screw 12 and the ice sample holder 17 are coaxially arranged, and a pressure sensor 16 is arranged between the lower end surface of the pressurizing lead screw 12 and the upper end surface of the ice sample holder 17; the ice sample holder 17 is in contact connection with the walking device shell 14 through a disc spring 18, a temperature sensor 7 is arranged on the ice sample holder 17, the ice sample holder 17 is used for holding the ice sample 6 so that the ice sample 6 and the walking device shell 14 synchronously move, and the temperature sensor 7 is used for detecting the temperature of the ice sample 6; the walking device shell 14 is arranged on the instrument shell 1 through the ball screw 8 and the feed beam 11; the heater 2 is fixed on the instrument shell 1, the temperature controller 3 is arranged on the heater 2, and the heater 2 adopts a silicon rubber heater or a cast aluminum heater; the rock sample holder 5 is used for clamping the rock sample 4 and the heater 2, so that the rock sample 4 is attached to the heater 2; an output shaft of the motor 10 is connected with the ball screw 8 through a torque sensor 9; the data recorder 19 is respectively connected with the pressure sensor 16, the temperature sensor 7 and the torque sensor 9 through connecting wires, wherein the connecting wires for connecting the pressure sensor 16 are connected with the pressure sensor 16 through a central channel of the pressurizing lead screw 12; in addition to the motor 10, torque sensor 9 and data logger 19, other components are placed in a low temperature test chamber 20.
The working engineering of the ice rock interface sliding friction coefficient measuring device provided by the invention is as follows: setting the internal temperature of the low-temperature test box 20 according to the temperature of the measured ice sample 6, installing the ice sample 6 in the ice sample holder 17 when the temperature in the low-temperature test box 20 is stable, clamping the rock sample 4 and the heater 2 through the rock sample holder 5, and fixing the whole formed by the bonding of the rock sample 4 and the heater 2 on the instrument shell 1; the position of the ice sample 6 is adjusted by rotating the pressurizing handle 13 until the ice sample 6 contacts the rock sample 4, and the pressurizing handle 13 is continuously rotated until the reading of the pressure sensor 16 reaches a set value; the heating state of the heater 2 is controlled by the temperature controller 3, when the temperature reaches a set value, the data recorder 19 is turned on, the motor 10 is turned on to drive the torque sensor 9 and the ball screw 8 to rotate, so that the walking device shell 14 is driven to move, and the ice sample 6 slides on the surface of the rock sample 4; the friction coefficient between the ice sample 6 and the rock sample 4 can be calculated according to the torque value measured by the torque sensor 9 recorded in the data recorder 19, the normal stress between the ice sample 6 and the rock sample 4 measured by the pressure sensor 16 and the distance between the central shaft of the ball screw 8 and the central shaft of the ice sample 4; the components of the rock sample 4 are changed by adjusting the internal temperature of the low-temperature test chamber 20, the heating temperature of the heater 2, the positive stress applied by the pressurizing screw 12 and the relative sliding speed of the rock controlled by the rotation speed of the motor 10, so that the thickness of different ice layers, geothermal flux and stratum conditions can be simulated, the sliding friction coefficient of the ice-rock interface under the conditions of different ice layer temperatures and relative speeds can be measured, the test is comprehensive, the test cost is low, and the sliding characteristic of the ice-rock interface can be truly reflected.
In summary, according to the definition of the sliding friction coefficient, the sliding friction coefficient of the rock interface under the quasi-glacier base pressure condition and the stratum condition is tested, so that the controllability of the test is improved, and the requirements of different glacier researches are met.
Claims (1)
1. An iceberg interface sliding friction coefficient measuring device, characterized by comprising: the device comprises an instrument shell, a heater, a temperature controller, a rock sample holder, a temperature sensor, a ball screw, a torque sensor, a motor, a light bar, a pressure screw, a pressure handle, a walking device shell, a walking device upper cover, a pressure sensor, an ice sample holder, a disc spring, a data recorder and a low-temperature test box, wherein the walking device upper cover is arranged on the walking device shell, and a threaded through hole is formed in the middle of the walking device upper cover; the pressure screw passes through a threaded through hole on the upper cover of the walking device and is in threaded connection with the threaded through hole, the upper end of the pressure screw is fixedly connected with the pressure handle, the pressure screw and the ice sample holder are coaxially arranged, and a pressure sensor is arranged between the lower end face of the pressure screw and the upper end face of the ice sample holder; the ice sample holder is in contact connection with the walking device shell through a disc spring, a temperature sensor is arranged on the ice sample holder, and the ice sample holder is used for holding an ice sample so that the ice sample and the walking device shell synchronously move; the walking device shell is arranged on the instrument shell through a ball screw and a feed beam; the heater is fixed on the instrument shell, and a temperature controller is arranged on the heater; the rock sample clamp is used for clamping the rock sample and the heater so that the rock sample is attached to the heater; an output shaft of the motor is connected with the ball screw through a torque sensor; the data recorder is respectively connected with the pressure sensor, the temperature sensor and the torque sensor through connecting wires;
the instrument shell, the heater, the temperature controller, the rock sample holder, the temperature sensor, the ball screw, the light bar, the pressurizing screw, the pressurizing handle, the walking device shell, the walking device upper cover, the pressure sensor, the ice sample holder and the disc spring are arranged in the low-temperature test box;
the heater is a silicon rubber heater or a cast aluminum heater;
the connecting wire for connecting the pressure sensor is connected with the pressure sensor through the central channel of the pressurizing lead screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910027627.9A CN109540784B (en) | 2019-01-11 | 2019-01-11 | Rock interface sliding friction coefficient measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910027627.9A CN109540784B (en) | 2019-01-11 | 2019-01-11 | Rock interface sliding friction coefficient measuring device |
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| Publication Number | Publication Date |
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| CN109540784A CN109540784A (en) | 2019-03-29 |
| CN109540784B true CN109540784B (en) | 2024-03-08 |
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| CN201910027627.9A Active CN109540784B (en) | 2019-01-11 | 2019-01-11 | Rock interface sliding friction coefficient measuring device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110346278A (en) * | 2019-08-23 | 2019-10-18 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of can ice dynamic friction coefficient measuring device and its application method |
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|---|---|---|---|---|
| DE2243394A1 (en) * | 1972-09-04 | 1974-03-14 | Weser Ag | DEVICE FOR MEASURING THE FRICTION FORCE BETWEEN BODIES MADE OF ANY MATERIAL AND ICE |
| KR20090081988A (en) * | 2008-01-25 | 2009-07-29 | 삼성중공업 주식회사 | Ice abrasion tester |
| CN101556238A (en) * | 2009-05-11 | 2009-10-14 | 中国船舶重工集团公司第七二五研究所 | Device and method for testing linear reciprocating sliding friction and abrasion |
| JP2010249693A (en) * | 2009-04-16 | 2010-11-04 | Bridgestone Corp | On-ice friction tester and on-ice friction test method using the same |
| KR101066065B1 (en) * | 2010-03-24 | 2011-09-20 | 한국생산기술연구원 | Measuring apparatus for the coefficient of friction |
| CN108844893A (en) * | 2018-09-10 | 2018-11-20 | 武汉轻工大学 | A kind of dynamic friction coefficient measurement method |
| CN209280537U (en) * | 2019-01-11 | 2019-08-20 | 吉林大学 | A kind of aqualite Surface active component measuring friction coefficient device |
-
2019
- 2019-01-11 CN CN201910027627.9A patent/CN109540784B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2243394A1 (en) * | 1972-09-04 | 1974-03-14 | Weser Ag | DEVICE FOR MEASURING THE FRICTION FORCE BETWEEN BODIES MADE OF ANY MATERIAL AND ICE |
| KR20090081988A (en) * | 2008-01-25 | 2009-07-29 | 삼성중공업 주식회사 | Ice abrasion tester |
| JP2010249693A (en) * | 2009-04-16 | 2010-11-04 | Bridgestone Corp | On-ice friction tester and on-ice friction test method using the same |
| CN101556238A (en) * | 2009-05-11 | 2009-10-14 | 中国船舶重工集团公司第七二五研究所 | Device and method for testing linear reciprocating sliding friction and abrasion |
| KR101066065B1 (en) * | 2010-03-24 | 2011-09-20 | 한국생산기술연구원 | Measuring apparatus for the coefficient of friction |
| CN108844893A (en) * | 2018-09-10 | 2018-11-20 | 武汉轻工大学 | A kind of dynamic friction coefficient measurement method |
| CN209280537U (en) * | 2019-01-11 | 2019-08-20 | 吉林大学 | A kind of aqualite Surface active component measuring friction coefficient device |
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| Title |
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| 冰层取心回转钻进模拟实验台的设计与测试;陈云望;曹品鲁;龙翔;陈宝义;杨成;;探矿工程(岩土钻掘工程)(第05期);全文 * |
| 浅层电动机械钻具设计及其冰屑螺旋输送理论研究;洪嘉琳;《中国博士学位论文全文数据库 工程科技Ⅰ辑》;全文 * |
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