CN212834946U - Highway subgrade compactness short-term test device - Google Patents
Highway subgrade compactness short-term test device Download PDFInfo
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- CN212834946U CN212834946U CN202021583562.0U CN202021583562U CN212834946U CN 212834946 U CN212834946 U CN 212834946U CN 202021583562 U CN202021583562 U CN 202021583562U CN 212834946 U CN212834946 U CN 212834946U
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- rod body
- compaction
- hammer
- bearing plate
- compaction hammer
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Abstract
The utility model discloses a highway subgrade compactness rapid detection device, the handle is arranged at the top of a rod body, the compaction hammer is nested and connected with the rod body, the compaction hammer can slide up and down along the rod body, a bearing plate is arranged below the compaction hammer, and a depth gauge is arranged on the bearing plate; the rod body is also provided with a limiting ring with a bolt, the rod body is provided with a graduated scale, and the limiting ring can slide up and down on the rod body along the graduated scale; the rod body is also provided with a vertical hanging hammer and positioning scales; the compaction hammer is characterized in that auxiliary handles are arranged on two sides of the compaction hammer, a linear bearing for reducing resistance is embedded in the middle of the compaction hammer, and the linear bearing is embedded on the rod body. This application adopts the loading board, hits the compound mode of real hammer and the body of rod, and the easy production operation is answered to the structure letter, and this device can be fast convenient test on-the-spot compactness, masters the compaction condition on-the-spot constantly, has both saved the manpower, the operation of being convenient for again, improves work efficiency simultaneously.
Description
Technical Field
The utility model relates to a road detection field, concretely relates to highway subgrade compactness short-term test device.
Background
Compaction, also known as compaction, refers to the ratio of the dry density of soil or other road material after compaction to the standard maximum dry density, expressed as a percentage. The compaction quality of the roadbed and the road surface is one of the most important internal indexes for the construction quality management of road engineering. The strength, rigidity, stability and flatness of the roadbed and the pavement can be ensured only by fully compacting the roadbed and the pavement structure layer, so that the service life of the roadbed and the pavement is prolonged. The field compaction quality of the roadbed pavement is expressed by the degree of compaction. For roadbed soil and road base, the degree of compaction is the ratio of the dry density actually achieved at the construction site to the maximum dry density obtained in an indoor standard compaction test. The existing method for testing the compaction degree of the roadbed comprises a pit digging and sand filling square method and a circular knife method. Although the two methods are good, the use process has certain limitations, and particularly in the construction process of the roadbed of a low-grade highway (rural road or village road), the construction site conditions are poor, the test detection equipment is backward, the professional literacy of constructors (many local farmers) is low, the requirements of the roadbed construction can not be met far away, the compaction effect of the roadbed construction can not be tested accurately and quickly, and serious hidden dangers are brought to the engineering quality.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model aims at providing a simple structure easily operates's highway subgrade compactness short-term test device.
In order to realize the technical purpose, the utility model discloses a scheme is: a rapid detection device for road subgrade compactness comprises a rod body, a handle and a compaction hammer, wherein the handle is arranged at the top of the rod body, the compaction hammer is connected with the rod body in a nested manner and can slide up and down along the rod body, a bearing plate is further arranged below the compaction hammer, and a depth gauge is arranged on the bearing plate;
the rod body is also provided with a limiting ring with a bolt, the rod body is provided with a graduated scale, and the limiting ring can slide up and down on the rod body along the graduated scale;
the rod body is also provided with a vertical hanging hammer and positioning scales;
the compaction hammer is characterized in that auxiliary handles are arranged on two sides of the compaction hammer, a linear bearing for reducing resistance is embedded in the middle of the compaction hammer, and the linear bearing is embedded on the rod body.
Preferably, the bottom of the rod body is welded on the bearing plate.
Preferably, the bearing plate is of a cylindrical structure, the thickness of the bearing plate is 3.5-6.5cm, the diameter of the bearing plate is greater than or equal to 10.0cm, and the area of the bearing plate is greater than that of the compaction hammer.
Preferably, the distance between the limiting ring and the compaction hammer is greater than or equal to 50 cm.
Preferably, the central part of the bearing plate is provided with a positioning groove, the bottom of the rod body can be installed on the positioning groove in an embedded mode, and the lateral surface of the bearing plate is further provided with a horizontal bubble ruler.
The beneficial effects of the utility model are that, this application adopts the combination mode of loading board, ramming hammer and body of rod, the structure is simple and easy to produce and operate, this device can test the on-the-spot compactness fast and conveniently, grasp the on-the-spot compaction condition constantly, not only save manpower, but also convenient to operate, improve work efficiency at the same time; install perpendicular drop hammer on the body of rod of this application simultaneously, can accurately judge the straightness that hangs down of the body of rod, hit real hammer internally mounted simultaneously and have linear bearing, can guarantee to hit real hammer straight line vertical whereabouts process resistance minimum, increase equipment stability.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the specific embodiment of the present invention is a device for rapidly detecting the compaction degree of a road subgrade, comprising a rod body 1, a handle 2 and a compaction hammer 3, wherein the handle 2 is installed at the top of the rod body 1, the compaction hammer 3 is nested with the rod body 1, the compaction hammer 3 can slide up and down along the rod body 1, a bearing plate 4 is further disposed below the compaction hammer 3, and a depth gauge 5 is disposed on the bearing plate 4;
the rod body 1 is also provided with a limiting ring 7 with a bolt 6, a graduated scale 8 is arranged on the rod body 1, and the limiting ring 7 can slide up and down on the rod body 1 along the graduated scale 8;
the rod body 1 is also provided with a vertical hanging hammer 9 and a positioning scale 10;
the two sides of the compaction hammer 3 are provided with auxiliary handles 11, the middle of the compaction hammer 3 is embedded with a linear bearing 12 for reducing resistance, and the linear bearing 12 is embedded on the rod body 1.
The rod body 1 is welded on the bearing plate 4. When the rod body is welded with the bearing plate, only one operator is needed to complete the welding, but the rod body still slightly inclines at the moment because the ground is hard to guarantee the absolute level.
In order to ensure the stability of the operation, the bearing plate 4 is a cylindrical structure, the thickness of the bearing plate is 3.5-6.5cm, the diameter of the bearing plate is more than or equal to 10.0cm, and the area of the bearing plate is more than that of the compaction hammer. The distance between the limiting ring 7 and the compaction hammer 3 is more than or equal to 50 cm.
The bearing plate 4 central part is provided with constant head tank 13, body of rod 1 bottom can the embedded installation on constant head tank 13, the bearing plate 4 side still is provided with horizontal bubble chi 14. Because the bearing plate and the rod body are designed separately, the rod body can be held and adjusted to be in a vertical state by an operator, but two persons are required to operate together; meanwhile, the separation design is convenient to disassemble and transport.
When in use, a broom or a brush is used for cleaning the road surface near the measuring point, and the area is not less than 30 cm multiplied by 30 cm. Placing the bearing plate in an area after designated cleaning, and adjusting the bearing plate to be as horizontal as possible; adjust the spacing ring to the assigned position, an operator grips the regulation body of rod through the handle and is vertical state, and perpendicular sash weight indicates on location scale 0 this moment, and another operator lifts and hits real hammer to spacing ring department free fall 10 times, moves away from testing arrangement, adopts two steel rulers to adopt the cross method, measures the deformation depth of the soil under the loading board, also can read out the deformation depth through the scale on the loading board. According to the method, the same area is tested in parallel for 3 times, and the measuring point distance is 3-5 m. And the same three measuring points are operated by the same group of detection personnel, the pile number of the middle measuring point is recorded as the testing position, and the field compactness is calculated according to the comparison relation.
The device adopts a combination mode of the bearing plate, the compaction hammer and the rod body, has a simple structure, is easy to produce and operate, can quickly and conveniently test the field compaction degree, constantly master the field compaction condition, saves manpower, is convenient to operate, and simultaneously improves the working efficiency; install perpendicular drop hammer on the body of rod of this application simultaneously, can accurately judge the straightness that hangs down of the body of rod, hit real hammer internally mounted simultaneously and have linear bearing, can guarantee to hit real hammer straight line vertical whereabouts process resistance minimum, increase equipment stability.
The above, only do the preferred embodiment of the present invention, not used to limit the present invention, all the technical matters of the present invention should be included in the protection scope of the present invention for any slight modification, equivalent replacement and improvement of the above embodiments.
Claims (5)
1. The utility model provides a highway subgrade compactness short-term test device which characterized in that: the compaction hammer comprises a rod body, a handle and a compaction hammer, wherein the handle is arranged at the top of the rod body, the compaction hammer is connected with the rod body in a nested manner, the compaction hammer can slide up and down along the rod body, a bearing plate is further arranged below the compaction hammer, and a depth gauge is arranged on the bearing plate;
the rod body is also provided with a limiting ring with a bolt, the rod body is provided with a graduated scale, and the limiting ring can slide up and down on the rod body along the graduated scale;
the rod body is also provided with a vertical hanging hammer and positioning scales;
the compaction hammer is characterized in that auxiliary handles are arranged on two sides of the compaction hammer, a linear bearing for reducing resistance is embedded in the middle of the compaction hammer, and the linear bearing is embedded on the rod body.
2. The device for rapidly detecting the compaction degree of the roadbed of the highway according to claim 1, wherein the device comprises: the bottom of the rod body is welded on the bearing plate.
3. The device for rapidly detecting the compaction degree of the roadbed of the highway according to claim 1, wherein the device comprises: the bearing plate is of a cylindrical structure, the thickness of the bearing plate is 3.5-6.5cm, the diameter of the bearing plate is larger than or equal to 10.0cm, and the area of the bearing plate is larger than that of the compaction hammer.
4. The device for rapidly detecting the compaction degree of the roadbed of the highway according to claim 1, wherein the device comprises: the distance between the limiting ring and the compaction hammer is more than or equal to 50 cm.
5. The device for rapidly detecting the compaction degree of the roadbed of the highway according to claim 1, wherein the device comprises: the bearing plate is characterized in that a positioning groove is formed in the center of the bearing plate, the bottom of the rod body can be installed on the positioning groove in an embedded mode, and a horizontal bubble ruler is further arranged on the side face of the bearing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021583562.0U CN212834946U (en) | 2020-08-03 | 2020-08-03 | Highway subgrade compactness short-term test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021583562.0U CN212834946U (en) | 2020-08-03 | 2020-08-03 | Highway subgrade compactness short-term test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212834946U true CN212834946U (en) | 2021-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021583562.0U Active CN212834946U (en) | 2020-08-03 | 2020-08-03 | Highway subgrade compactness short-term test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212834946U (en) |
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2020
- 2020-08-03 CN CN202021583562.0U patent/CN212834946U/en active Active
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