CN207958941U - A kind of subgrade and pavement rebound deflection experiment bearing - Google Patents
A kind of subgrade and pavement rebound deflection experiment bearing Download PDFInfo
- Publication number
- CN207958941U CN207958941U CN201721876856.0U CN201721876856U CN207958941U CN 207958941 U CN207958941 U CN 207958941U CN 201721876856 U CN201721876856 U CN 201721876856U CN 207958941 U CN207958941 U CN 207958941U
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- Prior art keywords
- lever
- subgrade
- holder
- rebound deflection
- frame
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- 238000002474 experimental method Methods 0.000 title claims abstract description 21
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003550 marker Substances 0.000 claims abstract description 9
- 238000006073 displacement reaction Methods 0.000 claims abstract description 7
- 239000007787 solid Substances 0.000 claims 1
- 238000013461 design Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000002929 anti-fatigue Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Abstract
The utility model discloses a kind of subgrade and pavement rebound deflection experiment bearings,Including main body,The inside left of the main body is equipped with preceding lever,Rear lever is equipped on the right side of the body interior,The left lower of the preceding lever is equipped with fixed tripod,The inside left of the preceding lever is equipped with displacement sensor,The lower part of the preceding lever is installed with laser pickoff,The junction lower part of the preceding lever and rear lever is connected with supporting rack,The lower part of support frame as described above is equipped with pedestal,The right upper portion of lever is equipped with vertical marker post after described,The right side of the vertical marker post is equipped with connecting plate,The left upper portion of the connecting plate is equipped with dial gauge,It is fixedly connected with holder on the right side of the connecting plate,The holder is internally provided with lifting shaft,The bottom of the holder is equipped with A-frame,The top of the A-frame is equipped with and screws bolt,The left-hand face of the holder is equipped with ladder support plate.The subgrade and pavement rebound deflection experiment seat structure is simple, practical function.
Description
Technical field
The utility model belongs to rebound deflection experimental technique field, and in particular to a kind of subgrade and pavement rebound deflection experiment use
Bearing.
Background technology
Roadbed refers to requiring the banded structure object as road bed built, road according to route allocation and certain technology
Base is linear structure object made of being built with soil or building stones.It subjects ground dead weight and the road surface gravity of itself, and by road
The traffic load that face is transmitted to is the important component of entire highway construction.
Roadbed, by the structure for the direct supporting track for filling or excavating and formed, also referred to as circuit substructure.Roadbed with
Bridge, tunnel are connected, and collectively form circuit.Roadbed is different according to the orographic condition residing for it, and there are two types of citation forms：Embankment and road
Moat is commonly called as embankment and excavation.
Rebound deflection refers to that roadbed or road surface generate vertical deformation under specified load effect, can restore after unloading
Part deformation.Road surface rebound deflection amount not only reflects the overall stiffness and intensity of road structure, but also and road surface
Use state there are certain usual rebound deflection values of inner link are bigger, the plastic deformation of pavement structure is also bigger (just
Degree is poor), while anti-fatigue performance is also poor, it is difficult to bear heavy traffic flow；Otherwise then the anti-fatigue performance of pavement structure is good, and energy
Heavier volume of traffic is born in addition, rebound deflection is also easy to test, therefore the Analyzing Design Procedures for Asphalt Pavement that China is existing, used
Design deflection is the design objective of road surface overall stiffness and is acted on down with standard axle load that road table rebound deflection value Ls is no more than full
Sufficient pavement usage state and the road surface designed curve and sink value Ld of design life requirement are as design standard:Ls is less than or equal to
Ld.A kind of facilitate now is needed to carry out rebound deflection experiment holder.
Utility model content
The purpose of this utility model is to provide a kind of subgrade and pavement rebound deflection experiment bearings, to solve above-mentioned background
The problem of being proposed in technology.
To achieve the above object, the utility model provides the following technical solutions：A kind of subgrade and pavement rebound deflection experiment use
The inside left of bearing, including main body, the main body is equipped with preceding lever, rear lever is equipped on the right side of the body interior, before described
The left lower of lever is equipped with fixed tripod, and the inside left of the preceding lever is equipped with displacement sensor, under the preceding lever
Portion is installed with laser pickoff, and the lower part of the laser pickoff is fixedly connected with laser emitter, the preceding lever with
The junction lower part of lever is connected with supporting rack afterwards, and the lower part of support frame as described above is equipped with pedestal, the right upper portion of the rear lever
Equipped with vertical marker post, the right side of the vertical marker post is equipped with connecting plate, and the left upper portion of the connecting plate is equipped with dial gauge, described
Holder is fixedly connected on the right side of connecting plate, the holder is internally provided with lifting shaft, and the bottom of the holder is equipped with triangle branch
Frame, the top of the A-frame, which is equipped with, screws bolt, and the left-hand face of the holder is equipped with ladder support plate.
Preferably, the preceding lever is set as 2 with rear lever length ratio:1.
Preferably, the dial gauge includes automatic button, watch core, percentage dial plate, pointer, and the percentage dial plate is arranged hundred
The outside of table, watch core is divided to be arranged at the center of percentage dial plate, the automatic button is arranged in the top of percentage dial plate, the pointer
Interval is equidistantly arranged around the interior surface of percentage dial plate.
Preferably, the pedestal includes base body, strut, cross bar, and the strut is arranged at left and right sides of the lower part of pedestal, institute
It states cross bar to be arranged at the middle part of strut, the base body is arranged at the top of strut.
Preferably, the A-frame is equipped with 3 sub-stents, and the angle between 3 sub-stents is set as 60 degree.
Preferably, the outer surface for screwing bolt is equipped with screw thread, 3 branches for screwing bolt and A-frame
Frame is connected by threads turn.
The technique effect and advantage of the utility model：1, the subgrade and pavement rebound deflection experiment seat structure is simple, work(
It can be practical；By the transmitting of laser and again receive to measure real-time range, experimental result is more accurate, test method more section
It learns；
2, the height of dial gauge can be controlled by the lifting of internal stent lifting shaft and does not influence measurement angle, more had
Effect；
3, screw the connection type of bolt and A-frame and structure design so that pedestal is carried out more steady when experiment measures,
Be conducive to being normally carried out for experiment.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the dial gauge structural schematic diagram of the utility model；
Fig. 3 is the schematic diagram of base structure of the utility model.
In figure：1, main body；2, displacement sensor；3, fixed tripod；4, laser pickoff；5, laser emitter；6, pedestal；
601, base body；602, strut；603, cross bar；7, supporting rack；8, preceding lever；9, rear lever；10, ladder support plate；11, dial gauge；
111, automatic button；112, watch core；113, percentage dial plate；114, pointer；12, vertical marker post；13, connecting plate；14, holder；
15, lifting shaft；16, bolt is screwed；17, A-frame.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
The utility model provides a kind of subgrade and pavement rebound deflection experiment bearing as shown in Figure 1, Figure 2 and Figure 3, packet
Main body 1 is included, the inside left of the main body 1 is equipped with preceding lever 8, and 1 inner right side of the main body is equipped with rear lever 9, the preceding thick stick
The left lower of bar 8 is equipped with fixed tripod 3, and the inside left of the preceding lever 8 is equipped with displacement sensor 2, the preceding lever 8
Lower part be installed with laser pickoff 4, the lower part of the laser pickoff 4 is fixedly connected with laser emitter 5, before described
The junction lower part of lever 8 and rear lever 9 is connected with supporting rack 7, and the lower part of support frame as described above 7 is equipped with pedestal 6, the rear thick stick
The right upper portion of bar 9 is equipped with vertical marker post 12, and the right side of the vertical marker post 12 is equipped with connecting plate 13, a left side for the connecting plate 13
Upper lateral part is equipped with dial gauge 11, and the right side of the connecting plate 13 is fixedly connected with holder 14, and the holder 14 is internally provided with liter
Axis 15 drops, and the bottom of the holder 14 is equipped with A-frame 17, and the top of the A-frame 17, which is equipped with, screws bolt 16, described
The left-hand face of holder 14 is equipped with ladder support plate 10.
Specifically, the preceding lever 8 is set as 2 with 9 length ratio of rear lever:1.
Specifically, the dial gauge 11 includes automatic button 111, watch core 112, percentage dial plate 113, pointer 114, described hundred
Branch dial 113 is arranged in the outside of dial gauge 11, and watch core 112 is arranged in the center of percentage dial plate 113, the automatic button 111
It is arranged on the top of percentage dial plate 113, the pointer 114 is spaced the equidistant interior surface for being arranged around percentage dial plate 113.
Specifically, the pedestal 6 includes base body 601, strut 602, cross bar 603, the strut 602 is arranged in pedestal 6
At left and right sides of lower part, the cross bar 603 is arranged at the middle part of strut 602, and the base body 601 is arranged at the top of strut 602.
Specifically, the A-frame 17 is equipped with 3 sub-stents, the angle between 3 sub-stents is set as 60 degree.
Specifically, the outer surface for screwing bolt 16 is equipped with screw thread, screw bolt 16 and A-frame 17 3
Sub-stent is connected by threads turn.
Operation principle：The subgrade and pavement rebound deflection experiment during use, by displacement sensor 2, is swashed with bearing
The measuring instruments such as optical transmitting set 5, laser pickoff 4 are mounted on the corresponding position of the holder, and autodeflectometer measures vehicle and detecting
Section is travelled with certain speed, and the flexure between the preceding lever 8 of test carriage and rear lever 9 below chassis, which is measured beam, to be put into
The front end of vehicle chassis and propping up is remained stationary as in ground, and when rear axle two-wheel gap passes through gauge head, flexure passes through displacement sensor 2 etc.
Device is automatically recorded, and at this moment, measurement beam is dragged, is dragged to next measuring point with two times of car speed, again and again
METHOD FOR CONTINUOUS DETERMINATION forward records the two times result of dial gauge 11, and rebound deflection can be obtained by passing record back computer calculating
Test result, to complete the use of the subgrade and pavement rebound deflection experiment bearing.
Finally it should be noted that：The above descriptions are merely preferred embodiments of the present invention, is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it still can be with technical scheme described in the above embodiments is modified, or to which part technical characteristic
Equivalent replacement is carried out, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (6)
1. a kind of subgrade and pavement rebound deflection experiment bearing, including main body (1), it is characterised in that：The inside of the main body (1)
Left side is equipped with preceding lever (8), and main body (1) inner right side is equipped with rear lever (9), and the left lower of the preceding lever (8) is set
There are fixed tripod (3), the inside left of the preceding lever (8) to be equipped with displacement sensor (2), the lower part of the preceding lever (8) is solid
Dingan County is equipped with laser pickoff (4), and the lower part of the laser pickoff (4) is fixedly connected with laser emitter (5), the preceding thick stick
The junction lower part of bar (8) and rear lever (9) is connected with supporting rack (7), and the lower part of support frame as described above (7) is equipped with pedestal (6), institute
The right upper portion for stating rear lever (9) is equipped with vertical marker post (12), and the right side of the vertical marker post (12) is equipped with connecting plate (13), institute
The left upper portion for stating connecting plate (13) is equipped with dial gauge (11), and holder (14) is fixedly connected on the right side of the connecting plate (13),
The holder (14) is internally provided with lifting shaft (15), and the bottom of the holder (14) is equipped with A-frame (17), the triangle
The top of holder (17), which is equipped with, screws bolt (16), and the left-hand face of the holder (14) is equipped with ladder support plate (10).
2. a kind of subgrade and pavement rebound deflection experiment bearing according to claim 1, it is characterised in that：The preceding lever
(8) 2 are set as with rear lever (9) length ratio:1.
3. a kind of subgrade and pavement rebound deflection experiment bearing according to claim 1, it is characterised in that：The dial gauge
(11) include automatic button (111), watch core (112), percentage dial plate (113), pointer (114), percentage dial plate (113) setting
Outside in dial gauge (11), watch core (112) setting exist in the center of percentage dial plate (113), automatic button (111) setting
The top of percentage dial plate (113), pointer (114) interval are equidistantly arranged around the interior surface of percentage dial plate (113).
4. a kind of subgrade and pavement rebound deflection experiment bearing according to claim 1, it is characterised in that：The pedestal
(6) include base body (601), strut (602), cross bar (603), strut (602) setting is in lower part of pedestal (6) or so two
Side, cross bar (603) setting is at the middle part of strut (602), top of base body (601) setting in strut (602).
5. a kind of subgrade and pavement rebound deflection experiment bearing according to claim 1, it is characterised in that：The triangle branch
Frame (17) is equipped with 3 sub-stents, and the angle between 3 sub-stents is set as 60 degree.
6. a kind of subgrade and pavement rebound deflection experiment bearing according to claim 1, it is characterised in that：It is described to screw spiral shell
The outer surface of bolt (16) is equipped with screw thread, and 3 sub-stents for screwing bolt (16) and A-frame (17) pass through threads turn
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721876856.0U CN207958941U (en) | 2017-12-28 | 2017-12-28 | A kind of subgrade and pavement rebound deflection experiment bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721876856.0U CN207958941U (en) | 2017-12-28 | 2017-12-28 | A kind of subgrade and pavement rebound deflection experiment bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207958941U true CN207958941U (en) | 2018-10-12 |
Family
ID=63730421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721876856.0U Expired - Fee Related CN207958941U (en) | 2017-12-28 | 2017-12-28 | A kind of subgrade and pavement rebound deflection experiment bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207958941U (en) |
-
2017
- 2017-12-28 CN CN201721876856.0U patent/CN207958941U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20181012 |