CN208653817U - Experimental rig for tyre strip pull-out test - Google Patents
Experimental rig for tyre strip pull-out test Download PDFInfo
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- CN208653817U CN208653817U CN201821538011.5U CN201821538011U CN208653817U CN 208653817 U CN208653817 U CN 208653817U CN 201821538011 U CN201821538011 U CN 201821538011U CN 208653817 U CN208653817 U CN 208653817U
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- chamber
- tyre strip
- testpieces
- out test
- tyre
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Abstract
The utility model discloses the experimental rigs for tyre strip pull-out test, it solves the problems, such as that pull-out test apparatus structure is complicated in the prior art, with convenient for observation, the beneficial effect of data needed for pull-out test can effectively be obtained, its scheme is as follows: the experimental rig for tyre strip pull-out test, including chamber, geotechnical filling is set inside chamber；Tyre strip testpieces, loaded in chamber geotechnical filling, the quantity of tyre strip testpieces is several, and tyre strip testpieces is connect with drawing mechanism, to be extracted tyre strip testpieces out from chamber geotechnical filling by drawing mechanism；Reaction frame is arranged lifting part between chamber geotechnical filling top and reaction frame, the first tension-compression sensor connected to the controller is installed between lifting part and reaction frame.
Description
Technical field
The utility model relates to technical field of civil, more particularly to the test dress for tyre strip pull-out test
It sets.
Background technique
In recent years, as transportation business is increasingly flourishing, the quantity of all kinds of automobiles is sharply increased, resulting from waste and old
The quantity of tire is growing day by day.According to incompletely statistics, the U.S. needs to handle per year over 200015000 waste tire, adds and takes
Greatly per year over 2008000000, per year over 20000000, current China has become global first giant tyre producing country for South Korea,
Tire production amount reaches more than 300,000,000, and the yield of waste tire reaches more than 200,000,000.Incident shadow severe caused by environment
The loud and wasting of resources how to be effectively treated and using these tires, becomes the problem of whole world is considered as instantly.
Tire is made of by vulcanized rubber and high tensile steel wire, and tensile strength is high, anti-friction performance is good, flexibility and durable
Property excellent equal (even if having use up as the service life that automobile tire uses, excellent mechanical property is still had), these characteristics are proper
The most important several aspects of reinforcement material characteristic requirements are met well.Therefore, engineers propose a kind of new processing side
Method --- tire reinforcement.
Currently not yet about the special pull-out test of tyre strip, standardizes and the pull-out test of earth working material is also only given
One range, does not provide specific size and test method (refers to specification " geosynthetics test procedure " (SL235-
2012) the 32 drawing rubs test in).
Pull-out test is one kind of soil test, tests the test of pulled object and adjacent material interface parameter.In order to grind
Study carefully ceramic-metal bond characteristic, foreign countries have formulated the testing standard of relevant direct shear test and pull-out test, and China's formulation is " geotechnological
Synthetic material test procedure " (SL235-2012) also all using direct shear test and pull-out test as its basic skills.Generally, it is considered that
Direct shear test is chiefly used in the lesser geosynthetics of rigidity, and geosynthetics biggish for rigidity, generallys use
Pull-out test determines its interface parameter.
The principle of pull-out test is rubbing action, by applying direct stress, makes closely to tie between muscle material and the soil body (sand body)
It closes, to resist external force (pulling capacity) using the stiction on interface each other.Pull-out test application is very wide: such as measurement reinforced earth
The interface parameter of rib tape and soil, the interface parameter of measurement geosynthetics (grid/cell compartment) and soil, measurement anchor pole in barricade
With the relevant parameter of native interface parameter, measurement anchor plate.But structure is complicated for existing experimental rig, complicated for operation, and measurement is quasi-
Exactness is lower, and the device without being directed to tyre strip pull-out test, carries out pull-out test to tyre strip according to the prior art,
It is unable to accurately control, control influences test effect.
Therefore, it is necessary to carry out new researching and designing to the experimental rig for tyre strip pull-out test to draw for tyre strip
Pull out test.
Utility model content
In order to overcome the shortcomings of existing tyre strip pull-out test technology, the utility model is provided to be tried for tyre strip drawing
The experimental rig tested, it is easy to operate, laborsaving, be easily installed, it must can effectively measure test data needed for pull-out test.
The concrete scheme of experimental rig for tyre strip pull-out test is as follows:
For the experimental rig of tyre strip pull-out test, including chamber, geotechnical filling is set inside chamber；
Tyre strip testpieces, loaded in chamber geotechnical filling, the quantity of tyre strip testpieces is several, and tyre strip
Testpieces is connect with drawing mechanism, to be extracted tyre strip testpieces out from chamber geotechnical filling by drawing mechanism；
Reaction frame, is arranged lifting part at the top of chamber geotechnical filling between reaction frame, lifting part and reaction frame it
Between the first tension-compression sensor connected to the controller is installed.
By the setting of the first tension-compression sensor, it can effectively control what lifting part applied geotechnical filling in chamber
Load magnitude, it is simple and convenient, and also whole installation is simple, and it is easy to operate, counter-force is generated to soil to reaction frame using lifting part
Work filler is further applied load, without being additionally further applied load, so that overall structure setting is simple.
Further, the lifting part is jack.
Further, the drawing mechanism includes straight line driving mechanism, and straight line driving mechanism is connect with telescopic rod, telescopic rod
It is connect by fixture with the tyre strip testpieces.
Further, the fixture and the telescopic rod connect end equipped with the second tension-compression sensor, the second tension-compression sensor with
The controller connection.
Further, the fixture includes the clamping plate of upper layer and lower layer interval set distance setting, the sky between two laminated planks
Between for clamping the tyre strip testpieces, and pass through fastener connection, clamping plate after two laminated plank clamping wheel tire testpieces
It is all made of steel plate, is respectively provided with aperture between upper and lower two steel plate, after setting test material, above and below bolt or screw tightening
Two clamping plates guarantee tyre strip testpieces during the drawing process with fixture without relative displacement, and fixture side clamps tyre strip testpieces,
Threaded hole is arranged in the other side, is tightened up and down by bolt, bolt and nut is set to the two sides of tyre strip testpieces.
Further, two laminated plank sides are commonly connected to connecting plate, and connecting plate is connect with the second tension-compression sensor, and second
Tension-compression sensor is connect with the telescopic rod, and pulling capacity of the setting of the second tension-compression sensor for during obtaining test is big
Small, pulling capacity is the interface parameter for measuring tyre strip testpieces, i.e., anti-pull-out property when tyre strip is embedded in filler, in other words
It is frictional behaviour, in terms of reinforced earth bulkhead.
Further, the reaction frame includes set on the lower support of chamber bottom and above chamber geotechnical filling
Reaction beam, lower support and reaction beam connect by being set to the bracket of chamber two sides, reaction beam and the lifting part energy
Enough contact settings, chamber bottom and pedestal are connected, and lower branch stays at the lower section of pedestal；There are multiple holes of different height for bracket
Position, for adjusting counter-force depth of beam, power is transmitted to reaction beam by jack, during jack is gradually lifted, entire counter-force
Frame is jacked up, until the head-to-foot seat of lower support of lower part.And chamber is linked together with pedestal, lower support and reaction beam are formed certainly
Counter-force.
Further, two sides cradle top is attached by upper support.
Further, the second movable plate is installed in chamber setting outlet, exit activity, and chamber is tried in tyre strip
Inlet porting at part, the guide rail of the setting of entrance two sides and fixture cooperation are tested, inlet activity is installed the first movable plate and is used for
Prevent geotechnical filling from flowing out, the setting of guide rail is moved horizontally for fixture holding.After the completion of test, the second movable plate is opened,
For the geotechnical filling in removal chamber, the first movable plate is opened, for placing tyre strip testpieces.First movable plate sum
Second movable plate and chamber are articulated and connected.
Further, the chamber side is made of transparent or semitransparent material, can observe soil during the test
Work material, that is, sand plane of fracture situation, and inside chamber around four sides altitude scale slot, when controlling compactness
Height control.
The test method of experimental rig for tyre strip pull-out test, the specific steps are as follows:
1) geotechnical filling type and corresponding compactness, moisture content are determined according to operating condition of test, determines tyre strip testpieces
Overlying burden determines the placement quantity and spacing of tyre strip testpieces；
2) it is close that setting is calculated in the compaction in layers geotechnical filling in chamber, expansion flat top surface after every lamination reality
Tyre strip testpieces, tyre strip testpieces and drawing mechanism is arranged after being densified to setting height in geotechnical filling height under solidity
Connection；
3) continue compaction in layers geotechnical filling to required operating condition height, cover board is set after the completion of compacting, is set at the top of cover board
Lifting part is set, then the first tension-compression sensor is set at the top of lifting part, lifting part increases until covering lotus on needed for reaching
It carries；
4) start drawing mechanism, drive the extraction of tyre strip testpieces, control is conveyed information to by the first tension-compression sensor
Device, and observe the situation of change of geotechnical filling in chamber；
5) after the completion of testing, removal lifting part, removal geotechnical filling；
6) operating condition of test 1) is changed the step, step 2)-step 5) is repeated.
Compared with prior art, the utility model has the beneficial effects that
1) the utility model applies upper load by reaction frame, can adjust counter-force depth of beam, front entrance as needed
Timely removal filler after the completion of capable of adjusting the placement situation of earth working material with outlet and test, operates convenient laborsaving, two activities
Sand is dropped out from gap during the setting of plate can be effectively prevented test.
2) the utility model can be carried out the pull-out test under a variety of materials, can adjust the placement situation of material, and fixture can have
Effect places the relative displacement of material and fixture during the drawing process；By the organic glass of side wall, plane of fracture situation can be observed,
The failure mechanism and force value size that can be applied to probe into soil during pull-out test, provide new test side for " pull-out test "
Method.
3) the utility model passes through the setting of the first tension-compression sensor, is further applied load convenient for determination to geotechnical filling, leads to
The setting of the second tension-compression sensor is crossed, convenient for determining the force value size destroyed in pull-out test.
4) the utility model is able to achieve the pulling capacity measurement of tire test part, determines earth working material load and pulling capacity size
Relationship, for waste tire be applied to practice preferable guidance being provided.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is the main view of the utility model experimental rig；
Fig. 2 is the top view of the utility model experimental rig；
Fig. 3 is the side view of the utility model experimental rig；
Fig. 4 is the utility model experimental rig reaction frame schematic diagram；
Fig. 5 is figure on front side of the utility model chamber；
Fig. 6 is the utility model fixture schematic diagram；
Wherein, 1-1, poly (methyl methacrylate) plate, 1-2, backward baffle, 1-3, left side are to baffle, to baffle before 1-4,2, reaction frame,
3, pedestal, the 4, second movable plate, the 5, first movable plate, 6, tyre strip testpieces, 7, entrance, 8, outlet, 9, guide rail, 10, fixture,
11, the second tension-compression sensor, 12, telescopic rod, 13, gearbox, 14, motor, 15, reaction beam, 16, lower support, 17, upper support.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As background technique is introduced, the deficiencies in the prior art, in order to solve technical problem as above, this Shen
It please propose the experimental rig for tyre strip pull-out test.
In a kind of typical embodiment of the application, as shown in Figure 1, it is used for the experimental rig of tyre strip pull-out test,
Including chamber, geotechnical filling is set inside chamber；Tyre strip testpieces (cuts from waste tire and is obtained, being will be in tire
The non-two side portions cutting gained in portion part), tyre strip testpieces is loaded in chamber geotechnical filling, the quantity of tyre strip testpieces
For several, and tyre strip testpieces is connect with drawing mechanism, with by drawing mechanism by tyre strip testpieces from chamber soil
It is extracted out in work filler；Lifting part, lifting part and counter-force is arranged between chamber geotechnical filling top and reaction frame in reaction frame
First tension-compression sensor connected to the controller is installed between frame.
Chamber is rectangular frame structure, right-hand apron, the backward baffle 1-2, left side constituted including poly (methyl methacrylate) plate 1-1
Baffle 1-3 and forward direction baffle 1-4, four block baffles are whole after being welded to one another to be welded together with pedestal 3, the top setting of chamber
Opening can pass through the situation of change of geotechnical filling inside transparent organic glass plate observation experiment case during test.
As shown in figure 3, the backward bottom baffle 1-2 is equipped with outlet 8 and the second movable plate 4 of rectangle, the second movable plate 4 and examination
Tryoff is detachably connected that (or sliding slot is arranged in chamber side, and the second movable plate and the first movable plate are set to sliding slot by screw
Inside moved, the movable plate that fagging is used to support after closure is respectively set in sliding slot two sides of the bottom), during being compacted filler
It closes, it is openable after the completion of test to be used for removal filler.
As shown in figure 5, being equipped with the first movable plate of entrance 7 and muti-piece of rectangle in the middle part of forward direction baffle 1-4, different first is living
Movable plate synchronizing moving forms the dodge gate of different in width, and what it is according to the width of tyre strip testpieces or tyre strip testpieces is
Single or double items, corresponding the first movable plate opened in corresponding width range, the first movable plate can also be one piece, the first movable plate
It can be moved up and down relative to chamber.
Both sides are equipped with guide rail 9 in the middle part of forward direction baffle 1-4, are arranged before guide rail 9 is prominent to baffle 1-4, clamp ends are in guide rail 9
Surface (can) move back and forth, and fixture 10 is made to keep moving horizontally during the drawing process not tilting.
As shown in Figure 1, the guide rail surface placing clamp 10 of forward direction baffle 1-4, tyre strip testpieces 6 is placed in fixture 10,
Wherein, tyre strip testpieces 6 can be a strip, and fixture bolt is set to the tyre strip testpieces side two sides for clamping, alternatively, wheel
Tire testpieces is two strips, and two strip interval set distances are arranged, and are connected in the middle part of two strips by short tyre strip, for surveying
The drawing property of the tyre strip of one group of connection is measured, fixture 10 is clamped by key screw tyre strip testpieces 6, and Fig. 6 is the fixture
Schematic diagram.Connecting plate is arranged in 10 leading portion of fixture, and connecting plate is linked together by screw with the second tension-compression sensor 11, and second draws
Pressure sensor leading portion welds together with telescopic rod 12.Telescopic rod 12 is controlled by motor 14 and is moved forward or back, and by gearbox 15
Control the velocity of rotation of motor 14.
Reaction frame 2 is placed at left and right sides of chamber, the concrete condition of reaction frame is as shown in Figure 4.Reaction frame 2 includes setting
Bracket in chamber two sides, and the reaction beam 15, lower support 16 and upper support 17, bracket and the counter-force that are supported by bracket
Beam, lower support and upper support pass through together with screw connection, can adjust the height of three at any time as needed.It is carried out in test
When, jack is placed again after placing cover board at the top of geotechnical filling, then place the first tension-compression sensor on it, jack is gradually
Reaction beam is arrived on top after lifting, and entire reaction frame is gradually being lifted the head-to-foot seat of rami posterior inferior support meeting, counter-force is being formed, needed for providing
Overlying burden.
First tension-compression sensor and the second tension-compression sensor are connect with controller respectively, and controller is programmable PLC control
Device, and the controller is connect with display, controller also can be replaced computer computer, for the storage record to data.
The test method of experimental rig based on pull-out test, the specific steps are as follows:
1) the first movable plate and the second movable plate are closed, geotechnical filling type and corresponding compacting are determined according to operating condition of test
Degree, moisture content, determine overlying burden, determine placement quantity, the spacing of tyre strip testpieces.
2) compaction in layers geotechnical filling is intended to leveling top surface after every lamination reality.It is calculated under certain compactness
Packed height after being densified to front openings height according to this highl stratification, opens the first movable plate 5, places setting as needed
The tyre strip testpieces 6 of quantity, tyre strip testpieces 6 have the thickness of setting.Telescopic rod 12 is controlled by motor 14 to advance to
Destination locations measure length (or every time test before control the length be certain value), phase of the tyre strip testpieces 6 in chamber
Spacing and tyre strip testpieces itself width between adjacent tyre strip testpieces 6, it is living by multiple first at mobile front side entrance 7
Movable plate 5 makes opening only leave the space for placing tyre strip testpieces.
3) continue compaction in layers filler to required operating condition height, cover board is covered after the completion of compacting, places jack, then thousand
The first tension-compression sensor is placed on jin top, rises jack until overlying burden needed for applying to earth working material.
4) start motor by required rate, motor drives the extraction of tyre strip testpieces, starts pull-out test, pass through organic glass
Glass plate observes geotechnical filling situation of change, collects test data by computer software, peak value whereabouts setting ratio occurs to curve
After (for example the 90% of peak value), automatic or manual stops motor rotation, food preservation test data.
5) removal jack load takes out cover board, by rear openings removal filler, unclamps fixture and takes out test material
Material.
6) according to experimental program, change operating condition, repeat above-mentioned 1) -5), complete entire test operation.
It selects the sand that average grain diameter is 0.25~0.5mm to carry on the back filling material as wall, dries and guarantee that its moisture content is
0%.Test sand tests to obtain basic mechanical by related soil test according to highway earthwork test rule (JTG E40-2007)
Parameter is as shown in table 1:
The test of table 1 basic mechanical performance of sand
Present embodiment study of tire item-Soil Interface attribute testing, designing the depth of fill according to operating condition of test is 40cm, point
4 layers are filled；Every layer of required quality of banketing is calculated according to test requirements document compactness 70%, using rubber hammer static pressure.It has been compacted two layers
After place tyre strip, adjust length and spacing and record, with clamp tyre strip testpieces.Continue after being compacted two layers next
Cover board is covered, jack, sensor are placed, starts to carry out pull-out test, data are collected and recorded by computer software.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (9)
1. being used for the experimental rig of tyre strip pull-out test characterized by comprising
Geotechnical filling is arranged in chamber, chamber inside；
Tyre strip testpieces, loaded in chamber geotechnical filling, the quantity of tyre strip testpieces is several, and tyre strip is tested
Part is connect with drawing mechanism, to be extracted tyre strip testpieces out from chamber geotechnical filling by drawing mechanism；
Reaction frame is arranged lifting part between chamber geotechnical filling top and reaction frame, pacifies between lifting part and reaction frame
Fill the first tension-compression sensor connected to the controller.
2. the experimental rig according to claim 1 for tyre strip pull-out test, which is characterized in that the lifting part
For jack.
3. the experimental rig according to claim 1 for tyre strip pull-out test, which is characterized in that the drawing mechanism
Including straight line driving mechanism, straight line driving mechanism is connect with telescopic rod, and telescopic rod passes through fixture and the tyre strip testpieces
Connection.
4. the experimental rig according to claim 3 for tyre strip pull-out test, which is characterized in that the fixture and institute
It states telescopic rod and connects end equipped with the second tension-compression sensor, the second tension-compression sensor is connect with the controller.
5. the experimental rig according to claim 3 for tyre strip pull-out test, which is characterized in that the fixture includes
The clamping plate of upper layer and lower layer interval set distance setting, the space between two laminated planks are used to clamp the tyre strip testpieces,
And two pass through fastener after laminated plank clamping wheel tire testpieces and connect.
6. the experimental rig according to claim 5 for tyre strip pull-out test, which is characterized in that two laminated plank sides
It is commonly connected to connecting plate, connecting plate is connect with the second tension-compression sensor, and the second tension-compression sensor is connect with the telescopic rod.
7. the experimental rig according to claim 1 for tyre strip pull-out test, which is characterized in that the reaction frame packet
The lower support set on chamber bottom and the reaction beam above chamber geotechnical filling are included, lower support and reaction beam are by setting
Bracket in chamber two sides connects, and reaction beam can contact setting with the lifting part, and chamber bottom and pedestal are solid
Even, lower branch stays at the lower section of pedestal；
Further, two sides cradle top is attached by upper support.
8. the experimental rig according to claim 3 for tyre strip pull-out test, which is characterized in that the chamber is set
Set outlet, the second movable plate is installed in exit activity, chamber inlet porting at tyre strip testpieces, the setting of entrance two sides with
The first movable plate is installed in the guide rail of the fixture cooperation, inlet activity.
9. the experimental rig according to claim 1 for tyre strip pull-out test, which is characterized in that the chamber side
Portion is made of transparent or semitransparent material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821538011.5U CN208653817U (en) | 2018-09-19 | 2018-09-19 | Experimental rig for tyre strip pull-out test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821538011.5U CN208653817U (en) | 2018-09-19 | 2018-09-19 | Experimental rig for tyre strip pull-out test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208653817U true CN208653817U (en) | 2019-03-26 |
Family
ID=65793052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821538011.5U Expired - Fee Related CN208653817U (en) | 2018-09-19 | 2018-09-19 | Experimental rig for tyre strip pull-out test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208653817U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163915A (en) * | 2018-09-19 | 2019-01-08 | 山东大学 | Experimental rig and method for tyre strip pull-out test |
| CN110044698A (en) * | 2019-04-19 | 2019-07-23 | 郑州大学 | A kind of soil nailing pull-out test case and soil nailing pull-out test device |
-
2018
- 2018-09-19 CN CN201821538011.5U patent/CN208653817U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163915A (en) * | 2018-09-19 | 2019-01-08 | 山东大学 | Experimental rig and method for tyre strip pull-out test |
| CN110044698A (en) * | 2019-04-19 | 2019-07-23 | 郑州大学 | A kind of soil nailing pull-out test case and soil nailing pull-out test device |
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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: 20190326 Termination date: 20190919 |