CN201555846U - Vibration sensing device used for detecting highway roadbed - Google Patents
Vibration sensing device used for detecting highway roadbed Download PDFInfo
- Publication number
- CN201555846U CN201555846U CN2009203125925U CN200920312592U CN201555846U CN 201555846 U CN201555846 U CN 201555846U CN 2009203125925 U CN2009203125925 U CN 2009203125925U CN 200920312592 U CN200920312592 U CN 200920312592U CN 201555846 U CN201555846 U CN 201555846U
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- upper casing
- piston
- plunger shaft
- pavement
- roadbed
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Abstract
The utility model relates to a roadbed and pavement quality detection technique, particularly to a vibration sensing device used for detecting highway roadbed, which is characterized in that the device comprises a base, an upper casing, a piston rod, a piston, a silicone rubber seal ring, a photoelectric reflection receiving circuit, liquid and a piston cavity; the bottom surface of the piston cavity is connected with the flat plate-type base as a whole through screws; the piston rod is fixed with the inner top surface of the upper casing into a whole; the piston extends into the piston cavity; the piston cavity is opened and extends outwards; the upper casing is opened at the lower part and extends inwards; and the part of the piston cavity extending outwards and the part of the upper casing extending inwards form an inverted structure, and the two parts are sealed through the silicone rubber seal ring. The device is suitable for the quality detection of roadbed and pavement of different structures.
Description
Technical field
The utility model relates to a kind of subgrade and pavement quality detection technology, particularly express highway roadbed detection vibrating sensing device.
Background technology
Subgrade and pavement detects the detection that is actually roadbed, pavement compaction quality, roadbed, pavement compaction quality are one of most important inherent indexs of highway engineering construction quality management, have only roadbed, road surface structare layer are carried out abundant compacting, the flatness on intensity, rigidity and the road surface on roadbed, road surface could be guaranteed, and the serviceable life of roadbed, pavement engineering can be guaranteed and prolong.
The existing a kind of method of the detection of pavement compaction quality is a sand replacement method, and sand replacement method utilizes the sand of single-size to remove to replace the volume in examination hole, and it is current method in common, and a lot of engineerings are all classified sand replacement method as the main method of on-site measurement density.This method can be used for testing the density of various soil or ground surface material, and its shortcoming is: need carry the sand of more amount, and the weighing number of times is more, so its test speed is slower.
The existing another kind of method of the detection of pavement compaction quality is a core cutter method, and core cutter method is the classic method of measure field density.The cutting ring volume that domestic custom adopts is generally 200cm
3, the about usually 5cm of cutting ring height.The density that records with core cutter method is the average density in the depth range of soil sample place in the cutting ring, and it can not represent the average density of whole rolling layers.Because rolling the density of soil layer generally reduces from top to bottom, if cutting ring is taken at the top of rolling layers, the numerical value that then obtains is often bigger than normal, if what cutting ring was got is the bottom of rolling layers, then the numerical value of gained will be obviously less than normal, with regard to the compactness of checking subgrade soils and road surface structare layer, what we needed is the mean pressure solidity of whole rolling layers, rather than certain a part of compactness in the rolling layers, therefore, when measuring the density of soil, should make gained density can represent the average density of whole rolling layers with core cutter method.Yet this is the comparison difficulty in actual detected; The soil that cutting ring is got is the soil in the middle of the rolling layers just, and the result of core cutter method gained just may be roughly the same with the result of sand replacement method.In addition, the core cutter method applicable surface is narrower, can't use for Stabilized Soil that contains pellet and laxity material.
Yet, reach detection subgrade and pavement quality by detecting the pavement compaction degree, this can not say something in some cases, subgrade and pavement compactness as water absorptivity subgrade and pavement compactness and common high-grade highway is also inequality, the latter is owing to the change of material, and its performance is extraordinary, but it at first answers the outstanding water absorptivity of tool affair, if and with the pavement compaction degree as standard, then be difficult to reach the subgrade and pavement compactness of common high-grade highway.
Summary of the invention
The purpose of this utility model provides a kind of express highway roadbed detection vibrating sensing device, so that be fit to the subgrade and pavement quality testing of different structure.
Technical scheme of the present utility model is to realize like this, express highway roadbed detection vibrating sensing device is characterized in that: it comprises pedestal a, upper casing b, piston rod c, piston d, silicone rubber O-ring e, photoelectric reflection receiving circuit f, liquid g and plunger shaft h; Plunger shaft h bottom surface and flat pedestal a connect as one by screw; The shell inner top surface of piston rod c and upper casing b is fixed as one; Piston d puts in the plunger shaft h, and plunger shaft h opening is protruding, and upper casing b under shed inwardly puts in, and the protruding position of plunger shaft h and upper casing b inwardly put in the position and form the reversal of the natural order of things structure, between seal by silicone rubber O-ring e.
The liquid g that is difficult for muddy is arranged in the described plunger shaft h, and there is floating body L on liquid g surface, and photoelectric reflection receiving circuit f is arranged on the floating body L.
Principle of work of the present utility model and characteristics are: because the utility model is at first by placing the pick-up unit of subgrade and pavement in the standard roadbed, the travelling load of the utilization standard (vehicle weight that knows, engine model, Vehicle Speed) sets up a benchmark frequency spectrum from certain distance by the pick-up unit of placing subgrade and pavement in the standard roadbed, and then the travelling load of passing through standard is passed through unknown subgrade and pavement, be implanted with the pick-up unit of the subgrade and pavement under the standard subgrade and pavement under this subgrade and pavement, when passing through by the travelling load of measurement standard, the vibration signal of the vibration transducer of subgrade and pavement pick-up unit carries out spectrum analysis, be fine as the road of consistent survey explanation roadbed with the frequency spectrum of standard homogenous quantities, otherwise then defective in quality.The method that this detection gimmick and background technology provide has the difference of essence, and one can detect whenever and wherever possible, and detection speed is fast.Set up powerful analytic system easily and provide means for the quality transformation of subgrade and pavement.
Description of drawings
The utility model is described in further detail below in conjunction with the embodiment accompanying drawing.
Fig. 1 is the structural representation of the utility model embodiment 1;
Fig. 2 is the structural representation of the utility model embodiment 2.
Embodiment
As shown in Figure 1, it comprises pedestal a, upper casing b, piston rod c, piston d, silicone rubber O-ring e, photoelectric reflection receiving circuit f, liquid g and plunger shaft h.Plunger shaft h bottom surface and flat pedestal a connect as one by screw.The shell inner top surface of piston rod c and upper casing b is fixed as one; Piston d puts in the plunger shaft h, and plunger shaft h opening is protruding, and upper casing b under shed inwardly puts in, and the protruding position of plunger shaft h and upper casing b inwardly put in the position and form the reversal of the natural order of things structure, between seal by silicone rubber O-ring e.
The liquid g that is difficult for muddy is arranged in the plunger shaft h, and there is floating body L on liquid g surface, and photoelectric reflection receiving circuit f is arranged on the floating body L.
When travelling load is passed through, the vibration wave that produces acts on the pedestal a, further act on plunger shaft h bottom surface by pedestal a, make the liquid g fluctuation that is difficult for muddy is arranged in the plunger shaft h, fluctuation can make floating body L fluctuate thereupon, the reflected light that top photoelectric reflection receiving circuit f receives can change thereupon, and this variation is consistent with vibration wave.Therefore go out the vibration that travelling load acts on subgrade and pavement by detecting this catoptrical variation with regard to energy measurement, finally obtain rumble spectrum and distribute by Fourier transform.
Because the liquid g that is difficult for muddy is arranged in the plunger shaft h, liquid g has the good characteristics of servo-actuated, therefore obtain the vibration signal that travelling load acts on subgrade and pavement and have the good characteristics of dynamic by the fluctuation of measuring liquid g.But muddy of the problem that exists yes liquid g.Influence service time.
For this reason, a kind of scheme of variation changes the liquid g that is difficult for muddy into silicon rubber n as shown in Figure 2, and silicon rubber n surface is as floating body L.Photoelectric reflection receiving circuit f is arranged equally, thereon.When travelling load is passed through, the vibration wave that produces acts on the pedestal a, further act on plunger shaft h bottom surface by pedestal a, make silicon rubber n vibration in the plunger shaft h, vibration can make floating body L fluctuate thereupon, the reflected light that top photoelectric reflection receiving circuit f receives can change thereupon, and this variation is consistent with vibration wave.
Claims (2)
1. express highway roadbed detection vibrating sensing device is characterized in that: it comprises pedestal (a), upper casing (b), piston rod (c), piston (d), silicone rubber O-ring (e), photoelectric reflection receiving circuit (f), liquid (g) and plunger shaft (h); Plunger shaft (h) bottom surface and flat pedestal (a) connect as one by screw; The shell inner top surface of piston rod (c) and upper casing (b) is fixed as one; Piston (d) puts in the plunger shaft (h), plunger shaft (h) opening is protruding, upper casing (b) under shed inwardly puts in, and the protruding position of plunger shaft (h) and upper casing (b) inwardly put in the position and form the reversal of the natural order of things structure, between seal by silicone rubber O-ring (e).
2. according to the described express highway roadbed detection vibrating sensing device of claim 1, it is characterized in that: the liquid (g) that is difficult for muddy is arranged in the described plunger shaft (h), there is floating body (L) on liquid (g) surface, and photoelectric reflection receiving circuit (f) is arranged on the floating body (L).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203125925U CN201555846U (en) | 2009-10-15 | 2009-10-15 | Vibration sensing device used for detecting highway roadbed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203125925U CN201555846U (en) | 2009-10-15 | 2009-10-15 | Vibration sensing device used for detecting highway roadbed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201555846U true CN201555846U (en) | 2010-08-18 |
Family
ID=42615534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203125925U Expired - Fee Related CN201555846U (en) | 2009-10-15 | 2009-10-15 | Vibration sensing device used for detecting highway roadbed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201555846U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607788A (en) * | 2012-03-27 | 2012-07-25 | 西安航空技术高等专科学校 | Device and method for detecting vibration isolation performance consistency of oversized optical platform |
| CN104483082A (en) * | 2014-12-03 | 2015-04-01 | 长安大学 | Device for analyzing stability of embankment under effect of earthquake load and manufacturing method of device |
-
2009
- 2009-10-15 CN CN2009203125925U patent/CN201555846U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607788A (en) * | 2012-03-27 | 2012-07-25 | 西安航空技术高等专科学校 | Device and method for detecting vibration isolation performance consistency of oversized optical platform |
| CN104483082A (en) * | 2014-12-03 | 2015-04-01 | 长安大学 | Device for analyzing stability of embankment under effect of earthquake load and manufacturing method of device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20121015 |