CN219179116U - Bearing ratio measuring device for highway subgrade and road surface on-site detection - Google Patents
Bearing ratio measuring device for highway subgrade and road surface on-site detection Download PDFInfo
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- CN219179116U CN219179116U CN202223469646.3U CN202223469646U CN219179116U CN 219179116 U CN219179116 U CN 219179116U CN 202223469646 U CN202223469646 U CN 202223469646U CN 219179116 U CN219179116 U CN 219179116U
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- rod
- bearing ratio
- hydraulic jack
- highway subgrade
- site detection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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Abstract
The utility model discloses a bearing ratio measuring device for road subgrade and road surface on-site detection, which comprises a steel bar beam, wherein a hydraulic jack is sleeved on the steel bar beam, a jacking rod below the hydraulic jack is tightly jacked on a stress ring, the lower part of the stress ring is tightly jacked on a penetrating rod, the lower end of the penetrating rod is tightly jacked on the road surface, mounting rods are fixed at two ends of the penetrating rod, a dial indicator is inwards screwed and fixed on the mounting rods through outer tightening nuts, guide rods are also sleeved on the steel bar beam, the guide rods are symmetrically arranged at two sides of the hydraulic jack, and sliding sleeves are sleeved on the rod bodies of the guide rods in a sliding mode. The measuring device structure can better improve the vertical concentricity of the jack ejector rod and the penetrating rod, ensure that the on-site bearing ratio measuring work is normally carried out, and simultaneously improve the accuracy of measuring results.
Description
Technical Field
The utility model relates to the technical field of highway pavement bearing ratio measuring equipment, in particular to a bearing ratio measuring device for on-site detection of highway subgrade and pavement.
Background
California load-bearing ratio CBR California bearing ratio is a test method proposed by California in the United states to assess the load-bearing capacity of a base material. The load bearing capacity is characterized by the capacity of the material to resist local load indentation deformation, and the CBR value is expressed as a percentage of the relative value using the load bearing capacity of standard crushed stones as a standard. This method was also used later to assess the strength of the soil matrix. Because of the simple testing method of CBR and low equipment cost, the method is widely applied in a plurality of countries. The CBR method is adopted to determine the thickness of the asphalt pavement, and the asphalt pavement has a matched chart, is very convenient to apply and is popular with engineering technicians. Instrument for determining california load ratio (CBR): consists of a frame, a loading device, a force measuring device, a penetration rod, a dial indicator and the like.
In the prior art, in the use process of the bearing ratio measuring device for highway subgrade and road surface on-site detection, the penetrating rod is pressurized by the jack and can displace downwards, and due to the existence of the stress ring, the ejector rod of the jack is difficult to be concentric and coaxial with the penetrating rod vertically in practice, so that uneven stress on the top of the penetrating rod can cause inclination of the penetrating rod, inaccurate measuring results can be caused, and even bearing ratio measurement fails.
Disclosure of Invention
The utility model aims to provide a bearing ratio measuring device for on-site detection of highway subgrade and road surfaces, which has the advantages that the structure of the measuring device can better improve the vertical concentricity of a jack ejector rod and a penetrating rod, ensure that the on-site bearing ratio measuring work is normally carried out, and improve the accuracy of measuring results.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a highway subgrade road surface is with bearing ratio measuring device, includes the reinforcing bar crossbeam, reinforcing bar crossbeam on the cover be equipped with hydraulic jack, hydraulic jack below the ejector pin jack tightly on stress ring, stress ring below jack tightly on the penetration rod, penetration rod lower extreme jack tightly at road surface, penetration rod both ends all be fixed with the installation pole, the installation pole on inwards screw up through the tightening nut in the outside and be fixed with the percentage table, reinforcing bar crossbeam on still the cover be equipped with the guide bar, guide bar symmetry set up in hydraulic jack both sides position department, guide bar pole body slip cover be equipped with sliding sleeve, sliding sleeve medial surface inwards be connected with semicircular clamping frame through the connecting rod, semicircular clamping frame pass through bolted connection together and clamp in the ejector pin periphery, guide bar body on the cover be equipped with fixed sleeve, fixed sleeve screw up on the guide bar through outside bolt, fixed sleeve on the front and back symmetry position department all be equipped with the bar baffle, bar baffle in bar baffle lateral surface position department behind the bar.
Further, one side of the hydraulic jack is provided with an operating rod.
Further, a dynamometer is arranged in the stress ring.
Furthermore, the inner side surface of the semicircular clamping frame is provided with annular anti-slip tooth grooves which are equidistantly spaced.
Further, the lower end of the penetrating rod penetrates through the rigid platform, the rigid platform is in a four-corner claw shape, the inner side face of each corner position is inwards connected with a supporting spring rod, the inner end of each supporting spring rod is connected with a pre-tightening pressing plate, the pre-tightening pressing plate is in a semicircular shape, the pre-tightening pressing plates are spliced in pairs to form an upper layer and a lower layer, and the pre-tightening pressing plates after the upper layer and the lower layer are spliced are staggered by ninety degrees and encircle the periphery of the lower end of the penetrating rod.
Compared with the prior art, the utility model has the following beneficial effects:
according to the utility model, the guide rod and the semicircular clamping frame structure are arranged, so that the push rod is guided and limited in the pressing direction, meanwhile, the strip-shaped baffle structure is arranged, the stress ring is limited in the steering direction, the pre-pressing plate structure below the penetrating rod is matched, the compression stability of the penetrating rod is improved, the vertical concentricity of the jack push rod and the penetrating rod is integrally improved, the normal operation of on-site bearing ratio measurement is ensured, and the accuracy of the measurement result is improved.
Drawings
FIG. 1 is a schematic view of the front structure of a measuring device according to the present utility model;
FIG. 2 is a schematic diagram of a connection structure of a semicircular clamping frame and a strip-shaped baffle of the measuring device;
FIG. 3 is a schematic diagram of the pre-compression plate assembly of the measuring device of the present utility model;
in the figure: 1. roadbed pavement; 2. a reinforcing steel bar beam; 3. a sleeve plate; 4. a hydraulic jack; 5. a push rod; 6. a stress ring; 7. penetrating the rod; 8. a rigid platform; 9. a guide rod; 10. a pre-tightening pressing plate; 11. a joystick; 12. a connecting rod; 13. a semicircular clamping frame; 14. a fixed sleeve; 15. a strip-shaped baffle; 16. supporting a spring rod; 17. and (5) a dial indicator.
Detailed Description
The utility model is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the utility model easy to understand.
As shown in fig. 1, in the prior art, hydraulic jack 4 is sleeved on steel bar beam 2, ejector pin 5 of hydraulic jack 4 below is tightly supported on stress ring 6, stress ring 6 below is tightly supported on penetrating rod 7, penetrating rod 7 lower extreme is tightly supported on road surface 1 surface, penetrating rod 7 both ends all are fixed with the installation pole, inwards screw up through the tightening nut in outside on the installation pole and be fixed with percentage table 17, this application is on the basis of prior art part, the additional design guide bar 9 structure, guide bar 9 passes through sleeve plate 3 symmetry setting in hydraulic jack 4 both sides position department, the slip sleeve is equipped with on the guide bar 9 pole body slip cover, the slip sleeve medial surface is inwards connected with semicircular clamping frame 13 through connecting rod 12, semicircular clamping frame 13 is in the same place through bolted connection and clamps at ejector pin 5 periphery, the cover is equipped with fixed sleeve 14 on the guide bar 9 pole body still, fixed sleeve 14 passes through outside bolt tightening and is fixed on guide bar 9, the front and back symmetry position department all is equipped with baffle 15 between fixed sleeve 14, baffle 15 stops in bar 6 front and back side position department.
As shown in fig. 3, the lower end of the penetrating rod 7 passes through the rigid platform 8, the rigid platform 8 is in a four-corner claw shape, the inner side surface of each corner position is connected with a supporting spring rod 16 inwards, the inner end of the supporting spring rod 16 is connected with a pre-tightening pressing plate 10, the pre-tightening pressing plate 10 is in a semicircular shape, the pre-tightening pressing plates 10 are spliced in pairs to form an upper layer and a lower layer, and the pre-tightening pressing plates 10 after the splicing of the upper layer and the lower layer are staggered for ninety degrees and encircle the periphery of the lower end of the penetrating rod 7.
When the hydraulic jack is used on site, the hydraulic jack 4 is operated through the operating rod 11 to work, the ejector rod 5 presses the stress ring 6, the stress ring 6 presses the penetrating rod 7, in the process, after the ejector rod 5 is clamped by the semicircular clamping frame 13, sliding sleeves at two ends slide on the guide rod 9 along with the ejector rod 5, the pressing direction of the ejector rod 5 is guided and limited, meanwhile, the bar-shaped baffle 15 structure is arranged, the steering of the stress ring 6 when being pressed is blocked and limited, the structure of the pre-pressing plate 10 below the penetrating rod 7 is matched, the pressing stability of the penetrating rod 7 is improved, the vertical coaxiality of the ejector rod 5 and the penetrating rod 7 of the jack 4 is integrally improved, the measuring accuracy is further improved, the error influence condition of pressed dislocation is relieved, and parameters are recorded through the dynamometer and the dial indicator 17, so that measured data is obtained.
Standard parts used in the utility model can be purchased from the market, special-shaped parts can be customized according to the description of the specification and the drawings, the specific connection modes of all parts adopt conventional means such as mature bolts, rivets and welding in the prior art, the machinery, the parts and the equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection modes in the prior art, so that the details are not described.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a highway subgrade road surface is on-spot to be detected with bearing ratio measuring device, includes the reinforcing bar crossbeam, reinforcing bar crossbeam on the cover be equipped with hydraulic jack, the ejector pin of hydraulic jack below jack tightly on stress ring, stress ring below jack tightly on the penetration pole, penetration pole lower extreme jack tightly at road surface, penetration pole both ends all be fixed with the installation pole, the installation pole on inwards screw up through the screw up nut in the outside and be fixed with percentage table, its characterized in that: the steel bar beam on still the cover be equipped with the guide bar, the guide bar symmetry set up in hydraulic jack both sides position department, guide bar pole body slide the cover and be equipped with sliding sleeve, sliding sleeve medial surface inwards be connected with semicircular clamping frame through the connecting rod, semicircular clamping frame pass through bolted connection together and the clamping is peripheral at the ejector pin, guide bar pole body on still the cover be equipped with fixed sleeve, fixed sleeve screw up through outside bolt and fix on the guide bar, fixed sleeve around symmetry position department all be equipped with bar baffle, bar baffle block around stress ring side position department.
2. The device for measuring the bearing ratio for on-site detection of highway subgrade and pavement according to claim 1, which is characterized in that: one side of the hydraulic jack is provided with an operating lever.
3. The device for measuring the bearing ratio for on-site detection of highway subgrade and pavement according to claim 1, which is characterized in that: and a dynamometer is arranged in the stress ring.
4. The device for measuring the bearing ratio for on-site detection of highway subgrade and pavement according to claim 1, which is characterized in that: the inner side surface of the semicircular clamping frame is provided with annular anti-slip tooth grooves which are equidistantly spaced.
5. The device for measuring the bearing ratio for on-site detection of highway subgrade and pavement according to claim 1, which is characterized in that: the lower end of the penetrating rod penetrates through the rigid platform, the rigid platform is in a four-corner claw shape, the inner side face of each corner position is inwards connected with a supporting spring rod, the inner end of each supporting spring rod is connected with a pre-tightening pressing plate, the pre-tightening pressing plate is in a semicircular shape, the pre-tightening pressing plates are spliced in pairs to form an upper layer and a lower layer, and the pre-tightening pressing plates formed by splicing the upper layer and the lower layer are staggered by ninety degrees and encircle the periphery of the lower end of the penetrating rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223469646.3U CN219179116U (en) | 2022-12-26 | 2022-12-26 | Bearing ratio measuring device for highway subgrade and road surface on-site detection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223469646.3U CN219179116U (en) | 2022-12-26 | 2022-12-26 | Bearing ratio measuring device for highway subgrade and road surface on-site detection |
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| CN219179116U true CN219179116U (en) | 2023-06-13 |
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| CN202223469646.3U Active CN219179116U (en) | 2022-12-26 | 2022-12-26 | Bearing ratio measuring device for highway subgrade and road surface on-site detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117213964A (en) * | 2023-11-07 | 2023-12-12 | 山东泰和城建发展有限公司 | Highway pavement bearing ratio measurement and detection device and detection method |
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2022
- 2022-12-26 CN CN202223469646.3U patent/CN219179116U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117213964A (en) * | 2023-11-07 | 2023-12-12 | 山东泰和城建发展有限公司 | Highway pavement bearing ratio measurement and detection device and detection method |
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