CN211697525U - Device for measuring influence of local heating on adhesion force - Google Patents
Device for measuring influence of local heating on adhesion force Download PDFInfo
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- CN211697525U CN211697525U CN201921701107.3U CN201921701107U CN211697525U CN 211697525 U CN211697525 U CN 211697525U CN 201921701107 U CN201921701107 U CN 201921701107U CN 211697525 U CN211697525 U CN 211697525U
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- glass cylinder
- heating
- soil body
- resistance wire
- soil
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Abstract
The utility model discloses a local heating is to survey device of adhesion influence, by a glass section of thick bamboo, rings, the stopper, the wooden frame, miniature camera head, the wiring wooden plug, the suspender, the sheetmetal, the heat conduction post, the resistance wire, the circular telegram clamp, the circular telegram line, the circular telegram connects, the soil body, the soil box, power and tensiometer are constituteed jointly, arrange the sheetmetal in glass bobbin bottom symmetry, the circular telegram clamp of two circular telegram lines is on the resistance wire before the experiment begins, and connect the circular telegram joint of the circular telegram line other end at the two poles of the power, after specific circular telegram time, make glass section of thick bamboo and soil body separation through the pulling force that the tensiometer applyed, survey the soil body adhesion change under the local heating effect to the soil body; the device realizes the function of local heating of the soil body, adopts the resistance wire as the heating material, can conveniently control different heating time or heating intensity, and is an effective means for researching the influence of local heating on the formation of mud cakes and the adhesion force of the soil body.
Description
Technical Field
The utility model belongs to the technical field of tunnel and underground works test instrument, in particular to survey device that local heating influences adhesion.
Background
In recent years, with the improvement of economic level and the acceleration of urbanization process, the shield construction technology of China is gradually developed. In the shield tunneling process of the shield tunneling machine, a cutter on a shield cutter head continuously acts with a soil body on a tunneling surface, a large amount of heat can be generated, and the heat can be quickly transmitted to the whole cutter head in a conduction mode. In the normal tunneling process of the shield cutterhead, the heat can be dissipated through a shield system or the surrounding soil body, and cannot cause great influence on the cutterhead. However, as the shield advances, mud cakes are formed on the surface of the cutter head and continuously increase, the hardening speed of the mud cakes is increased by the increase of the temperature, so that the cutting function of the cutter is reduced, eccentric wear is caused, and the torque of the cutter head is increased. Therefore, researching the influence rule of different temperatures on the adhesion of the mud cakes is an effective means for solving the problem of mud cake formation of the cutter head.
Currently, there are studies on adhesion measuring devices at home and abroad, such as: in the 50 s of the 20 th century, Foutaine developed a soil adhesion tester using metal disks as a measuring disk in the Investigation of the mechanism of soil adhesion. In 1984, the hydro-electric measuring type soil adhesion measuring instrument developed by Susan school of Industrial science, Jiangsu, Zhang Xian et al in hydro-electric measuring type soil adhesion measuring instrument provides a soil adhesion measuring instrument which adopts a hydraulic mechanism and a vertical guide post to continuously press and unload an interface in the vertical direction and adopts a resistance strain gauge cantilever beam type sensor to acquire adhesion data. In 1993, a soil adhesion measuring instrument developed in the utility model patent of soil adhesion measuring instrument by the Lu spring et al of Jilin university in 1993 adopts a combined measuring disc to solve the problem that the real adhesion cannot be measured (or cannot be measured accurately) when the soil adhesion is greater than the cohesion. In the middle and later period of the 90 s, Jilin university Lushao Fang, Shi Yao Wu et al introduced computer technology into the development of soil adhesion instrument in the article of multifunctional soil laboratory bench, and the automation of the soil adhesion instrument was primarily realized. In 2002, the Wangbushen of Jilin university can measure the soil adhesion force under different motion modes such as triangular waves, sine waves and the like by modifying an electronic universal testing machine in the text of 'research on soil adhesion characteristic test system', and in 2005, the Sullon of Jilin university makes further improvements on the sampling frequency, the control parameters and the like of the soil adhesion test system in the text of 'research on sampling frequency and control parameters of the soil adhesion characteristic test system'. However, the research of these adhesion force measuring devices cannot effectively test the change of the adhesion force under the influence of different heating times and heating strengths, and also does not relate to the heating of a special curved surface bottom by using a resistance wire, and the change of temperature by using the energization time and the energization strength to test the change of the adhesion force value and the change of the adhesion force along with the heating of the resistance wire under different heating times and heating strengths.
In order to overcome the defects, the utility model provides a local heating is to survey device of adhesion influence analyzes the soil body adhesion value under different circular telegram heating time and circular telegram heating intensity, obtains the change condition of soil body adhesion along with heating to the prevention and cure for blade disc caking cake provides effective analysis foundation.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a local heating is to survey device of adhesion influence. The method aims to solve the problem that in a test for measuring the soil body adhesion force, the adhesion force values at different temperatures are tested by controlling the heating of resistance wires at different positions, so that the rule that the soil body adhesion force changes along with the heating is achieved, and the method can be applied to the prevention and treatment engineering of the mud cake on a cutter head.
A device for measuring the influence of local heating on adhesion force comprises a glass cylinder 1, a hanging ring 2, a limiting block 3, a wood frame 4, a miniature camera 5, a wiring wooden plug 6, a hanging strip 7, a metal sheet 8, a heat conducting column 9, a resistance wire 10, an electrifying clamp 11, an electrifying wire 12, an electrifying connector 13, a soil body 14, a soil box 15, a power supply 16 and a tension meter 17, wherein the metal sheets are symmetrically arranged at the bottom of the glass cylinder, the electrifying clamp of the two electrifying wires is clamped on the resistance wire before a test is started, the electrifying connector at the other end of the electrifying wire is connected to two poles of the power supply, after a specific electrifying time, the glass cylinder is separated from the soil body through the tension applied by the tension meter, the change of the soil body adhesion force under the action of local heating on the soil body is measured, the function of local heating on the soil body is realized, the soil body adhesion, and providing analysis basis for the removal of the cutter disc mud cake.
The device for measuring the influence of local heating on the adhesion force is characterized in that 4 lifting holes are symmetrically formed in the position, 2cm away from the top end, of the upper portion of the glass cylinder 1, 4 wiring wooden plugs 6 are inserted into the lifting holes, and the lifting ring 2 is connected with the wiring wooden plugs 6 through high-temperature-resistant lifting belts 7; the limiting block 3 is fixed in the middle of the glass cylinder 1 by high-temperature-resistant glass cement at a position 6cm away from the top end; a central round hole is reserved in the center of the wooden frame 4, so that the electrified wire 12 can be conveniently connected with the power supply 16 through the round hole; meanwhile, four gaps are reserved on the wooden frame 4, so that the wooden frame 4 is prevented from touching the wiring wooden plug 6 when being pressed down in the glass cylinder 1; 4 miniature cameras 5 are symmetrically arranged on the wooden frame 4, so that the change conditions of water and soil on the surface of the soil 14 below the semi-cylinder on the bottom surface of the glass cylinder 1 in the whole heating process can be observed and recorded; the bottom of the glass cylinder 1 is provided with a strip-shaped metal sheet 8 which can be heated and is used for locally heating the bottom of the glass cylinder.
The device for measuring the influence of local heating on the adhesion force is characterized in that strip-shaped metal sheets 8 are symmetrically arranged at the bottom of the glass cylinder 1, and the metal sheets 8 are fixed at the bottom of the glass cylinder 1 through epoxy resin glue; the length of the right strip-shaped metal sheet 8 is half of the length of the left and bottom strip-shaped metal sheets 8 for comparative analysis; the heat conducting column 9 is arranged inside the glass cylinder 1 and connected with the metal sheet 8, and a round small hole is formed in the glass cylinder 1 at the connecting line, so that the heat conducting column 9 can pass through the round small hole conveniently; the heat conducting column 9 in the glass cylinder 1 is connected with the metal sheet 8, so that the resistance wire 10 is prevented from being wired from the soil, the disturbance to the soil body 14 is reduced, and the soil body sample preparation is more convenient; the resistance wire 10 is arranged on the heat conducting column 9, so that the resistance wire 10 can be conveniently conducted to the metal sheet 8 through the heat conducting column 9 when the power supply 16 heats the resistance wire 10.
The device for measuring the influence of local heating on the adhesion force is characterized in that a resistance wire 10 is selected as a heating device, and the heating degree of a soil body 14 is controlled by changing the heating time of a power supply 16 or adjusting the heating intensity of the power supply 16; the electrifying clamp 11 at one end of the electrifying wire 12 can select the resistance wire 10 at one position as connection, so that the local heating condition of the metal sheet 8 at different positions can be directly measured conveniently.
Advantageous effects
The utility model provides a local heating is to survey device of adhesion influence, the device include a glass section of thick bamboo 1, rings 2, stopper 3, wooden frame 4, miniature camera 5, wiring wooden plug 6, suspender 7, sheetmetal 8, heat conduction post 9, resistance wire 10, circular telegram and press from both sides 11, circular telegram line 12, circular telegram joint 13, soil body 14, soil box 15, power 16 and tensiometer 17. The device for measuring the influence of local heating on the adhesion force is characterized in that 4 lifting holes are symmetrically formed in the position, 2cm away from the top end, of the upper portion of the glass cylinder 1, 4 wiring wooden plugs 6 are inserted into the lifting holes, and the lifting ring 2 is connected with the wiring wooden plugs 6 through high-temperature-resistant lifting belts 7; the limiting block 3 is fixed in the middle of the glass cylinder 1 by high-temperature-resistant glass cement at a position 6cm away from the top end; a central round hole is reserved in the center of the wooden frame 4, so that the electrified wire 12 can be conveniently connected with the power supply 16 through the round hole; meanwhile, four gaps are reserved on the wooden frame 4, so that the wooden frame 4 is prevented from touching the wiring wooden plug 6 when being pressed down in the glass cylinder 1; 4 miniature cameras 5 are symmetrically arranged on the wooden frame 4, so that the change conditions of water and soil on the surface of the soil 14 below the semi-cylinder on the bottom surface of the glass cylinder 1 in the whole heating process can be observed and recorded; the bottom of the glass cylinder 1 is provided with a strip-shaped metal sheet 8 which can be heated and is used for locally heating the bottom of the glass cylinder. The method for testing the soil adhesion value by directly drawing through the device has the following beneficial effects:
(1) the measuring device for the influence of local heating on the adhesion selects the resistance wire as a heating material, so that the temperature can be controlled by changing the heating time and the heating strength of the resistance wire, and the heating degree of the soil body can be controlled.
(2) The glass cylinder is selected as a tension device, so that the micro camera can observe the change condition of the soil body under the local heating action through the glass cylinder conveniently; the determination of the positions of the 4 miniature cameras ensures that the miniature cameras can completely observe the change conditions of water and soil on the surface of the soil body on the bottom surface of the glass cylinder in the test process, and provides effective analysis basis for the test change rule.
(3) The heat conducting column arranged inside the glass cylinder is connected with the metal sheet, so that resistance wires are prevented from being wired in soil, disturbance to a soil body is reduced, and sample preparation of the soil body is more convenient.
(4) The metal sheets are symmetrically arranged at the bottom of the glass curved surface, and the lengths of the metal sheets on the two sides are different, so that the influence of local differential heating of the soil body on the soil body adhesion can be conveniently researched.
Drawings
FIG. 1 is a diagram of an apparatus for measuring the effect of local heating on adhesion provided by the present invention;
fig. 2 is a view showing an arrangement of the metal plate and the heat conductive pillars, wherein (a) is a front view, (b) is a left side view, and (c) is a bottom view;
FIG. 3 is a top view of a wooden frame;
description of reference numerals: the device comprises a glass tube 1, a hanging ring 2, a limiting block 3, a wood frame 4, a miniature camera 5, a wiring wood plug 6, a hanging strip 7, a metal sheet 8, a heat conducting column 9, a resistance wire 10, an electrifying clamp 11, an electrifying wire 12, an electrifying connector 13, a soil body 14, a soil box 15, a power supply 16, a tension meter 17 and a central round hole 18.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
A measuring device for measuring soil body adhesion force under a special curved surface by inverting a sample is composed of a glass cylinder 1, a lifting ring 2, a limiting block 3, a wood frame 4, a miniature camera 5, a wiring wood plug 6, a hanging strip 7, a metal sheet 8, a heat conducting column 9, a resistance wire 10, an electrifying clamp 11, an electrifying wire 12, an electrifying connector 13, a soil body 14, a soil box 15, a power supply 16 and a tension meter 17;
4 hanging holes are symmetrically formed in the upper portion of the glass cylinder 1 at a position 2cm away from the top end, 4 wiring wooden plugs 6 are inserted into the hanging holes, and the hanging ring 2 is connected with the wiring wooden plugs 6 through high-temperature-resistant hanging strips 7;
the limiting block 3 is fixed in the middle of the glass cylinder 1 by high-temperature-resistant glass cement at a position 6cm away from the top end;
a central round hole 18 is reserved in the center of the wooden frame 4, so that the electrified wire 12 can be conveniently connected with the power supply 16 through the round hole; meanwhile, four gaps are reserved on the wooden frame 4, so that the wooden frame 4 is prevented from touching the wiring wooden plug 6 when being pressed down in the glass cylinder 1;
4 miniature cameras 5 are symmetrically arranged on the wooden frame 4, so that the change conditions of water and soil on the surface of the soil 14 below the semi-cylinder on the bottom surface of the glass cylinder 1 in the whole heating process can be observed and recorded;
the bottom of the glass cylinder 1 is provided with a strip-shaped metal sheet 8 which can be heated and is used for locally heating the bottom of the glass cylinder.
The utility model discloses the principle and the implementation mode of the utility model are explained by applying the concrete embodiment, and the explanation of the above embodiment is only used for helping to understand the method and the core idea of the utility model; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be changes in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (3)
1. The device for measuring the influence of local heating on the adhesion is characterized by consisting of a glass cylinder (1), a lifting ring (2), a limiting block (3), a wooden frame (4), a miniature camera (5), a wiring wooden plug (6), a lifting belt (7), a metal sheet (8), a heat conducting column (9), a resistance wire (10), an electrifying clamp (11), an electrifying wire (12), an electrifying connector (13), a soil body (14), a soil box (15), a power supply (16) and a tension meter (17);
4 hanging holes are symmetrically formed in the upper portion of the glass cylinder (1) 2cm away from the top end, 4 wiring wooden plugs (6) are inserted into the hanging holes, and the hanging rings (2) are connected with the wiring wooden plugs (6) through high-temperature-resistant hanging strips (7);
the limiting block (3) is fixed in the middle of the glass cylinder (1) by high-temperature-resistant glass cement at a position 6cm away from the top end;
a central round hole is reserved in the center of the wooden frame (4), so that the electrified wire (12) can be conveniently connected with the power supply (16) through the round hole; meanwhile, four gaps are reserved on the wooden frame (4), so that the wooden frame (4) is prevented from touching the wiring wooden plug (6) when being pressed down in the glass cylinder (1);
4 micro cameras (5) are symmetrically arranged on the wooden frame (4), so that the change conditions of water and soil on the surface of a soil body (14) below the semi-cylinder of the bottom surface of the glass cylinder (1) in the whole heating process can be observed and recorded;
the bottom of the glass cylinder (1) is provided with a strip-shaped metal sheet (8) which can be heated and is used for locally heating the bottom of the glass cylinder.
2. The device according to claim 1, characterized in that the bottom of the glass cylinder (1) is symmetrically provided with strip-shaped metal sheets (8), and the metal sheets (8) are fixed at the bottom of the glass cylinder (1) through epoxy resin glue; the length of the right strip-shaped metal sheet (8) is half of the length of the left and bottom strip-shaped metal sheets (8) for comparative analysis;
the heat-conducting column (9) is arranged inside the glass cylinder (1) and connected with the metal sheet (8), and a round small hole is formed in the glass cylinder (1) at the connecting line, so that the heat-conducting column (9) can pass through the round small hole conveniently; the heat-conducting column (9) in the glass cylinder (1) is connected with the metal sheet (8), so that the resistance wire (10) is prevented from being wired from the soil, the disturbance to the soil body (14) is reduced, and the soil body sample preparation is more convenient;
the resistance wire (10) is arranged on the heat-conducting column (9), so that the resistance wire (10) can be conveniently conducted to the metal sheet (8) through the heat-conducting column (9) when the resistance wire (10) is heated by the power supply (16).
3. The device as claimed in claim 1, characterized in that the resistance wire (10) is selected as a heating device, and the heating degree of the soil body (14) is controlled by changing the heating time of the power supply (16) or adjusting the heating intensity of the power supply (16);
the electrifying clamp (11) at one end of the electrifying wire (12) can select the resistance wire (10) at one position as connection, so that the local heating conditions of the metal sheets (8) at different positions can be directly measured conveniently.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921701107.3U CN211697525U (en) | 2019-10-10 | 2019-10-10 | Device for measuring influence of local heating on adhesion force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921701107.3U CN211697525U (en) | 2019-10-10 | 2019-10-10 | Device for measuring influence of local heating on adhesion force |
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| Publication Number | Publication Date |
|---|---|
| CN211697525U true CN211697525U (en) | 2020-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921701107.3U Expired - Fee Related CN211697525U (en) | 2019-10-10 | 2019-10-10 | Device for measuring influence of local heating on adhesion force |
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| CN (1) | CN211697525U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596111A (en) * | 2019-10-10 | 2019-12-20 | 南京林业大学 | Device and method for measuring influence of local heating on adhesion |
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2019
- 2019-10-10 CN CN201921701107.3U patent/CN211697525U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596111A (en) * | 2019-10-10 | 2019-12-20 | 南京林业大学 | Device and method for measuring influence of local heating on adhesion |
| CN110596111B (en) * | 2019-10-10 | 2023-10-27 | 南京林业大学 | Device and method for measuring influence of local heating on adhesion |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201016 Termination date: 20211010 |