CN110006569A - A kind of push-bench friction testing device - Google Patents
A kind of push-bench friction testing device Download PDFInfo
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- CN110006569A CN110006569A CN201910314435.6A CN201910314435A CN110006569A CN 110006569 A CN110006569 A CN 110006569A CN 201910314435 A CN201910314435 A CN 201910314435A CN 110006569 A CN110006569 A CN 110006569A
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- soil body
- push
- test specimen
- plug head
- body sample
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0061—Force sensors associated with industrial machines or actuators
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention provides a kind of push-bench friction testing device, consider the various factors such as environmental pressure, soil pressure, water content of soil, preferably simulate real operating condition, soil body sample is wrapped up using flexible membrane simultaneously, guarantee the integrality of soil body sample, and micropore is provided with outside flexible membrane, the permeability of the practical soil body is simulated, keeps test data more acurrate.
Description
Technical field
The present invention relates to a kind of friction testing devices, are filled more particularly to a kind of push-bench with friction testing
It sets.
Background technique
Pipe Jacking is a kind of common underground no-dig laying pipelines technique, for open-cut of slotting, construction effect
Rate is high, pollutes small.During jacking construction, the friction for needing pipeline to overcome the surrounding soil body could advance.Due to the surrounding soil body
Frictional resistance it is big, during existing jacking construction, need using lubricant reduce frictional resistance, the effect of lubricant drag reduction
It is related with pressure suffered by the injection pressure of lubricant, the property of the surrounding soil body and the soil body etc., for different constructions
Environment needs to select the injection pressure of suitable lubricant, this is extremely beneficial for design mistake.
Since push pipe machine equipment is huge, on-line testing is more difficult, for different construction environments, for the ease of design and construction
Scheme needs to carry out simulation test, simulates the opposite sliding between push pipe and the soil body using test device, obtains the note of lubricant
Enter pressure, optimize the resistance reducing performance of lubricant, provides experimental basis for Specific construction.But existing simulating test device is more simple
Single, precision is poor, and the friction testing between push pipe and the soil body is inaccurate.
Summary of the invention
The present invention is to provide a kind of push-bench that accuracy is high use to avoid above-mentioned existing deficiencies in the technology
Friction testing device, can be improved measurement accuracy, provide more accurate experimental basis for Specific construction.
The present invention adopts the following technical scheme that in order to solve the technical problem
A kind of push-bench friction testing device, the friction testing device include columnar test shell, test shell
Upper end be provided with upper end cover, the lower end for testing shell is provided with lower cover, and test test specimen is placed on lower cover, tests test specimen
Including flexible membrane, soil body sample, pipeline test specimen, upper plug head, lower end cap, flexible membrane wraps up soil body sample and upper plug head, flexible membrane
Surface is provided with micropore, and the top of lower cover is arranged in lower end cap, and Piping specimen is arranged above lower end cap, and soil body sample is in pipe
The top of road test specimen, upper plug head are arranged in the top of soil body sample, and lower cover, lower end cap are provided with lubrication in pipeline test specimen
Agent injection channel, lubricant injection pipe extend to the soil body by the lubricant injection channel in lower cover, lower end cap, pipeline test specimen
The intersection of sample and pipeline test specimen, liquid injection channel is also provided in upper plug head, and liquid injecting tube passes through in upper plug head
Liquid injection channel extend to the intersection of soil body sample and upper plug head, be equipped with piston rod, piston rod in the middle part of upper end cover
End be connected with the first load transducer, the end of the first load transducer is also connected with the first bearing plate, the first bearing plate
It is contacted with upper plug head, gas injection channel is additionally provided in upper end cover, the gas injection channel in upper end cover connects gas source, upper end
It covers and is additionally provided with exhaust passage, exhaust passage is connected to exhaust valve；It further include push action cylinder, push action cylinder passes through push rod to pipe
Road test specimen applies thrust, and the end of push rod is connected with the second load transducer, and the end of the second load transducer is also connected with the
Two bearing plates, the second bearing plate are abutted with the side wall of pipeline test specimen.
As a preferred solution, the intersection of soil body sample and upper plug head is provided with hole plate, is used for liquid
In the infiltration soil body sample of the liquid of injection channel more evenly.
As a preferred solution, lubricant control valve is additionally provided on lubricant flow in pipes.
As a preferred solution, liquid injection control valve is additionally provided on liquid injecting tube.
As a preferred solution, lubricant injection pump is additionally provided on lubricant flow in pipes.
As a preferred solution, pipeline test specimen is concrete material.
Beneficial effects of the present invention are as follows:
1, friction testing arrangement of the invention considers the various factors such as environmental pressure, soil pressure, water content of soil, preferably
Real operating condition is simulated, while wrapping up soil body sample using flexible membrane, guarantees the integrality of soil body sample, and in flexible membrane peripheral hardware
It is equipped with micropore, the permeability of the practical soil body is simulated, keeps test data more acurrate.
2, the present invention makes the soil sample that infiltrates into of liquid more evenly try body, more by the way that hole plate is arranged on soil body sample top
Good control water content.
3, the present invention makes the distance of push action cylinder movement setting, acquires pushing away for push action cylinder by changing lubricant pressure
Power peak value can preferably compare the frictional force under different pressures lubricating oil operating condition.
4, the present invention draws frictional force and lubricant pressure curve, by changing lubricant pressure to moisten in engineering practice
The setting of lubrication prescription pressure provides foundation.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Appended drawing reference in figure be respectively as follows: 1- test shell, 2- lower cover, 3- upper end cover, 4- lower end cap, 5- upper plug head,
6- hole plate, 7- soil body sample, 8- flexible membrane, 9- pipeline test specimen, 10- lubricant control valve, 11- exhaust valve, the first load of 12-
Sensor, the first bearing plate of 13-, 14- piston rod, the second bearing plate of 15-, the second load transducer of 16-, the injection control of 17- liquid
Valve processed, 18- push rod, 19- gas source.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
Friction testing device of the invention includes columnar test shell 1, and the upper end of test shell 1 is provided with upper end cover
3, the lower end of test shell 1 is provided with lower cover 2, and test test specimen is placed on lower cover 2, and test test specimen includes flexible membrane 8, soil
Body sample 7, pipeline test specimen 9, upper plug head 5, lower end cap 4, flexible membrane 8 wraps up soil body sample 7 and upper plug head 5,8 surface of flexible membrane are set
It is equipped with micropore, the top of lower cover 2 is arranged in lower end cap 4, and pipeline test specimen 9 is concrete material, and the setting of Piping specimen 9 is lower stifled
First 2 top, for soil body sample 7 in the top of pipeline test specimen 9, the top of soil body sample, lower cover 2, lower end cap is arranged in upper plug head 5
4, lubricant injection channel is provided in pipeline test specimen 9, lubricant injection pipe passes through lower cover 2, lower end cap 4, pipeline test specimen 9
Interior lubricant injection channel extends to the intersection of soil body sample 7 and pipeline test specimen 9, is also provided with liquid in upper plug head 5
Injection channel, liquid injecting tube extend to the boundary of soil body sample 7 Yu upper plug head 5 by the liquid injection channel in upper plug head 5
Place, the middle part of upper end cover 3 are equipped with piston rod 14, and the end of piston rod 14 is connected with the first load transducer 12, the first load
The end of sensor 12 is also connected with the first bearing plate 13, and the first bearing plate 13 is contacted with upper plug head 5, also set up in upper end cover 3
There is gas injection channel, the gas injection channel in upper end cover 3 connects gas source 19, is additionally provided with exhaust passage on upper end cover 3, arranges
Gas channel is connected to exhaust valve 11；It further include push action cylinder, push action cylinder applies thrust to pipeline test specimen 9 by push rod 18, pushes away
The end of bar 18 is connected with the second load transducer 16, and the end of the second load transducer 16 is also connected with the second bearing plate 15,
Second bearing plate 15 is abutted with the side wall of pipeline test specimen 9.
The intersection of soil body sample 7 and upper plug head 5 is provided with hole plate 6, for injecting liquid into the liquid in channel more
It is uniform to penetrate into soil body sample 7, and for the ease of controlling pressure, lubricant control is additionally provided on lubricant flow in pipes
Valve is additionally provided with liquid injection control valve on liquid injecting tube, for the ease of injecting lubricant, also sets on lubricant flow in pipes
It is equipped with lubricant injection pump.
The present apparatus is in use, by gas source by gas injection channel, to be filled with gas in test shell, by gas injection valve
The intracorporal pressure of shell is tested with the exhaust valve co- controlling on exhaust passage, to simulate soil body environmental pressure；By controlling liquid
Liquid is injected to soil body sample in injection channel, and then controls the water content of soil body sample；By piston rod to soil body sample top
Application loading force, to simulate the practical pressure loading being subject to of the soil body；Influence for test lubricant pressure to test specimen frictional force,
Setting pressure is injected to the intersection of soil body sample 7 and pipeline test specimen 9 by lubricant injection channel using lubricant injection pump
Lubricant, starting push action cylinder push pipeline test specimen 9 move to nominal distance, after it is moved to nominal distance, measurement is pushed away
The thrust of power cylinder and time: by the thrust variation of the second load transducer record reasoning oil cylinder, push action cylinder movement is recorded
To the time of nominal distance and the thrust peak value of push action cylinder, change the injection pressure of lubricant, is pushed away under recording accordingly
Power cylinder moves to the time of nominal distance and the thrust peak value of push action cylinder, draws out friction resistance curve, is engineering practice
The setting of middle lubricant pressure provides foundation.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (6)
1. a kind of push-bench friction testing device, the friction testing arrangement includes columnar test shell, tests shell
Upper end be provided with upper end cover, the lower end for testing shell is provided with lower cover, and test test specimen is placed on lower cover, tests test specimen
Including flexible membrane, soil body sample, pipeline test specimen, upper plug head, lower end cap, flexible membrane wraps up soil body sample and upper plug head, flexible membrane
Surface is provided with micropore, and the top of lower cover is arranged in lower end cap, and Piping specimen is arranged above lower end cap, and soil body sample is in pipe
The top of road test specimen, upper plug head are arranged in the top of soil body sample, and lower cover, lower end cap are provided with lubrication in pipeline test specimen
Agent injection channel, lubricant injection pipe extend to the soil body by the lubricant injection channel in lower cover, lower end cap, pipeline test specimen
The intersection of sample and pipeline test specimen, liquid injection channel is also provided in upper plug head, and liquid injecting tube passes through in upper plug head
Liquid injection channel extend to the intersection of soil body sample and upper plug head, be equipped with piston rod, piston rod in the middle part of upper end cover
End be connected with the first load transducer, the end of the first load transducer is also connected with the first bearing plate, the first bearing plate
It is contacted with upper plug head, gas injection channel is additionally provided in upper end cover, the gas injection channel in upper end cover connects gas source, upper end
It covers and is additionally provided with exhaust passage, exhaust passage is connected to exhaust valve；It further include push action cylinder, push action cylinder passes through push rod to pipe
Road test specimen applies thrust, and the end of push rod is connected with the second load transducer, and the end of the second load transducer is also connected with the
Two bearing plates, the second bearing plate are abutted with the side wall of pipeline test specimen.
2. a kind of push-bench as described in claim 1 friction testing device, in the intersection of soil body sample and upper plug head
It is provided with hole plate, for injecting liquid into the infiltration soil body sample of the liquid in channel more evenly.
3. a kind of push-bench as described in claim 1 friction testing device, profit is additionally provided on lubricant flow in pipes
Lubrication prescription control valve.
4. a kind of push-bench as described in claim 1 friction testing device, liquid note is additionally provided on liquid injecting tube
Enter control valve.
5. a kind of push-bench as described in claim 1 friction testing device, profit is additionally provided on lubricant flow in pipes
Lubrication prescription injection pump.
6. a kind of push-bench as described in claim 1 friction testing device, pipeline test specimen is concrete material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910314435.6A CN110006569A (en) | 2019-04-18 | 2019-04-18 | A kind of push-bench friction testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910314435.6A CN110006569A (en) | 2019-04-18 | 2019-04-18 | A kind of push-bench friction testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110006569A true CN110006569A (en) | 2019-07-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910314435.6A Pending CN110006569A (en) | 2019-04-18 | 2019-04-18 | A kind of push-bench friction testing device |
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| CN (1) | CN110006569A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113720510A (en) * | 2021-08-24 | 2021-11-30 | 中国地质大学（武汉） | Intelligent pipe jacking pipe circumference friction resistance measuring method based on film pressure sensor |
| CN114279612A (en) * | 2022-03-08 | 2022-04-05 | 华东交通大学 | System and method for testing frictional resistance of jacking pipe |
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| US3798962A (en) * | 1972-04-19 | 1974-03-26 | Atomic Energy Commission | Method for predicting movements of structural members emplaced in the earth |
| DE2535794A1 (en) * | 1974-08-12 | 1976-02-26 | Fondasol Tech Avignon Sa | MEASURING DEVICE FOR A PENETROMETER |
| CN101271056A (en) * | 2008-05-15 | 2008-09-24 | 上海交通大学 | Testing device for friction coefficient between underground pipe line and soil body |
| CN101592574A (en) * | 2009-06-30 | 2009-12-02 | 三峡大学 | Triaxial creep tester of unsaturated soil |
| MX2010006307A (en) * | 2010-06-09 | 2011-12-15 | Jose Martin Gallo Aguilar | Arm of gravitational inertia geared to accelerate and friction soil particles. |
| CN102636430A (en) * | 2012-05-04 | 2012-08-15 | 上海交通大学 | Indoor simulation experiment system for pipe-jacking grouting drag reduction |
| CN202628107U (en) * | 2012-06-25 | 2012-12-26 | 江苏银旭隧道机械有限公司 | Water injection device for earth pressure balance pipe-jacking machine |
| CN103076230A (en) * | 2013-02-05 | 2013-05-01 | 重庆交通大学 | Test method and test device of mechanical properties of soil-structure contact surface |
| CN107389449A (en) * | 2017-08-03 | 2017-11-24 | 中南大学 | A kind of filling in mine material compression property experimental provision and its experimental method |
| CN108593464A (en) * | 2018-08-02 | 2018-09-28 | 中南大学 | A kind of test method of pile-soil interface shearing mechanical characteristic |
-
2019
- 2019-04-18 CN CN201910314435.6A patent/CN110006569A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3798962A (en) * | 1972-04-19 | 1974-03-26 | Atomic Energy Commission | Method for predicting movements of structural members emplaced in the earth |
| DE2535794A1 (en) * | 1974-08-12 | 1976-02-26 | Fondasol Tech Avignon Sa | MEASURING DEVICE FOR A PENETROMETER |
| CN101271056A (en) * | 2008-05-15 | 2008-09-24 | 上海交通大学 | Testing device for friction coefficient between underground pipe line and soil body |
| CN101592574A (en) * | 2009-06-30 | 2009-12-02 | 三峡大学 | Triaxial creep tester of unsaturated soil |
| MX2010006307A (en) * | 2010-06-09 | 2011-12-15 | Jose Martin Gallo Aguilar | Arm of gravitational inertia geared to accelerate and friction soil particles. |
| CN102636430A (en) * | 2012-05-04 | 2012-08-15 | 上海交通大学 | Indoor simulation experiment system for pipe-jacking grouting drag reduction |
| CN202628107U (en) * | 2012-06-25 | 2012-12-26 | 江苏银旭隧道机械有限公司 | Water injection device for earth pressure balance pipe-jacking machine |
| CN103076230A (en) * | 2013-02-05 | 2013-05-01 | 重庆交通大学 | Test method and test device of mechanical properties of soil-structure contact surface |
| CN107389449A (en) * | 2017-08-03 | 2017-11-24 | 中南大学 | A kind of filling in mine material compression property experimental provision and its experimental method |
| CN108593464A (en) * | 2018-08-02 | 2018-09-28 | 中南大学 | A kind of test method of pile-soil interface shearing mechanical characteristic |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113720510A (en) * | 2021-08-24 | 2021-11-30 | 中国地质大学（武汉） | Intelligent pipe jacking pipe circumference friction resistance measuring method based on film pressure sensor |
| CN113720510B (en) * | 2021-08-24 | 2022-07-19 | 中国地质大学（武汉） | Intelligent pipe jacking pipe circumference friction resistance measuring method based on film pressure sensor |
| CN114279612A (en) * | 2022-03-08 | 2022-04-05 | 华东交通大学 | System and method for testing frictional resistance of jacking pipe |
| CN114279612B (en) * | 2022-03-08 | 2022-05-10 | 华东交通大学 | System and method for testing frictional resistance of jacking pipe |
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Application publication date: 20190712 |