NL2036750A - Subgrade compactness detection device - Google Patents

Subgrade compactness detection device Download PDF

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Publication number
NL2036750A
NL2036750A NL2036750A NL2036750A NL2036750A NL 2036750 A NL2036750 A NL 2036750A NL 2036750 A NL2036750 A NL 2036750A NL 2036750 A NL2036750 A NL 2036750A NL 2036750 A NL2036750 A NL 2036750A
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Netherlands
Prior art keywords
compaction
plate
measuring
degree
column
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NL2036750A
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Dutch (nl)
Inventor
Huo Zhipeng
Zhang Xiong
Sun Mengqing
Zhang Yang
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Yanan Universtity
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Application filed by Yanan Universtity filed Critical Yanan Universtity
Publication of NL2036750A publication Critical patent/NL2036750A/en

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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D1/00Investigation of foundation soil in situ
    • E02D1/08Investigation of foundation soil in situ after finishing the foundation structure
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Soil Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

of the invention The invention belongs to the field of road construction, in particular to a subgrade compactness detection device, which comprises a base placed on the subgrade surface to be detected, a compaction mechanism comprises a test slot arranged on the base, and a 5 compaction plate is placed in the test slot; through the work of pulley mechanism, the hammer mechanism is controlled to fall downward or rise upward, and the impact force of the striking plate piece is balanced on the compaction plate through the auxiliary guidance of the column and the reduction of contact friction; after receiving the feedback of force, the tester installed on the striking plate piece carries out numerical conversion of compactness 10 data, repeats the above steps for multiple measurements, and takes the average value of multiple data as the final data of compactness detection, thus solving the problem that manual measurement is prone to errors; the design of the calibration mechanism can analyze the distance of the compaction plate sinking into the subgrade surface layer under a single impact by changing the position of the high point of the calibration piece in the front 15 and back photos, and provide displacement reference data except the force feedback data of the tester.

Description

Yan’an University (CN) 23/115 NL
Subgrade compactness detection device
Technical Field
The invention relates to the field of road construction, in particular to a subgrade compactness detection device.
Background Technology
Subgrade compactness is one of the key indicators of subgrade and pavement construction quality inspection, which indicates the density status after site compaction. The higher the compactness, the higher the density, and the better the overall performance of the material. Traditional inspection usually adopts ring knife methad, sand filling method and nuclear densitometer method, etc., which needs to sample the subgrade, thus causing site damage, which has great limitations. The new frequency spectrum type subgrade compactness rapid tester is a testing instrument that uses the impact of a falling hammer to make the soil rebound, and uses the low frequency to measure the response value of the soil to get the subgrade compactness, and it has little damage to the subgrade in the detection area.
The prior art has the following problems: 1. When testing the subgrade compactness by using the frequency spectrum type subgrade compactness rapid tester, it is necessary to keep the balance of the impact force of the striking plate piece on the compaction plate every time, and the number of times of striking is not less than three times. Most of the existing striking devices manually drop the striking plate piece, and there are hidden dangers in the falling force and falling direction, which leads to a large error in the detected data and affects the judgment of the workers on the compactness. 2. When the striking plate piece impacts the compaction plate, it will press down at the subgrade. In the subsequent inspection, the impact force of the contact of the compaction plate is unbalanced due to the increase of the falling distance of the striking plate piece, and the measured data has a large error, which affects the judgment of the staff on the compactness.
Description of the Invention (1) Objective of the invention
In order to solve the technical problems existing in the background technology, the invention provides a subgrade compactness detection device, which assists in guiding during the falling and hammering action of the striking plate piece, ensures the single-point hammering to improve the accuracy of detection data, and the setting of the calibration mechanism can obtain the displacement distance of the compaction plate to obtain the reference amount of compactness, and assists in controlling the falling distance of the striking plate piece to ensure the balance of compaction impact force, and has the characteristics of convenient use and accurate measurement. (2) Technical scheme
In order to solve the above technical problems, the invention provides a subgrade compactness detection device, which comprises a base placed on the subgrade surface to be detected, a compaction mechanism comprising a test slot arranged on the base, and a compaction plate is placed in the test slot;
A through column is arranged above the test slot, and a guide table is arranged at the corner of the column; the inner wall of the guide table is provided with a chute; the side edge of the chute is formed with a flange strip;
The pulley mechanism comprises a suspension arranged above the column; the lower part of the suspension is provided with a fixed pulley; the lower part of the fixed pulley is provided with a protruding rope hook, and a movable pulley is arranged below; the bottom of the fixed pulley is provided with a hanger, and one side of the movable pulley is provided with a wheel disc spindle bracket mounted on the base; a winding wheel disc is arranged in the wheel disc spindle bracket, and a rope shaft penetrates between the two; one end of the rope shaft is connected to the output end of the driving device, and the outer wall is coiled with ropes passing through the fixed pulley and the movable pulley in turn;
A hammer mechanism comprises a hanging plate installed at the bottom of the hanger, and a striking plate piece is installed below the hanging plate; the top of the striking plate piece is provided with a tester, and the corner of the hanging plate is provided with a protruding bearing frame; a rotatable bearing is installed in the bearing frame.
Preferably, the striking plate piece, the column and the compaction plate are arranged in parallel, and each structure is centrally symmetrical.
Preferably, the edge of the bearing is attached to the clamping surfaces of the chute and the flange strip, and the bearing slides relative to the chute.
Preferably, the end of the rope far from the rope shaft is fixed on the rope hook.
Preferably, the movable pulley rises or falls synchronously with the winding and unwinding of the rope, and the falling distance of the movable pulley relative to the fixed pulley is an impact distance.
Preferably, the side wall of the column is provided with a notch, and the specification of the notch is greater than that of the compaction plate.
Preferably, the compaction mechanism further comprises a calibration support formed at the edge of the compaction plate, and a calibration piece for assisting calibration is formed at the top of the calibration support.
Preferably, the calibration mechanism comprises a distance adjusting track arranged onthe base, and a sliding piece is slidably installed in the distance adjusting track; the top of the sliding piece is provided with a high-speed camera; an optical lens is formed on the end face of the high-speed camera facing the notch of the column.
Preferably, the two sides of the high-speed camera are symmetrically provided with protruding stoppers, and the high-speed camera and the movable end face of the distance- adjusting rail are locked by the stoppers.
Preferably, the terminal equipment wirelessly connected with the high-speed camera is in communication connection with the driving device.
The technical scheme of the invention has the following beneficial technical effects. 1. Through the work of pulley mechanism, the hammer mechanism is controlled to fall downward or rise upward, and the impact force of the striking plate piece is balanced on the compaction plate through the auxiliary guidance of the column and the reduction of contact friction; after receiving the feedback of force, the tester installed on the striking plate piece carries out numerical conversion of compactness data, repeats the above steps for multiple measurements, and takes the average value of multiple data as the final data of compactness detection, thus solving the problem that manual measurement is prone to errors. 2. The design of the calibration mechanism can analyze the distance of the compaction plate sinking into the subgrade surface layer under a single impact by changing the position of the high point of the calibration piece in the front and back photos, and provide displacement reference data except the force feedback data of the tester. 3. According to the change of displacement reference data, send an instruction to the driving device to unwind the rope, so that the striking plate piece under the hanger and the compaction plate have the same impact time interval each time, ensure that the impact force of the striking plate piece is constant, prevent the impact distance change caused by the subsidence of the compaction plate from affecting the impact force, and keep the data measured by the tester accurate.
Brief Description of the Drawings
Fig. 1 is a schematic structural diagram of the present invention;
Fig. 2 is a partial structural diagram of the present invention;
Fig. 3 is a schematic diagram of the matching structure of the compaction mechanism and the column of the present invention;
Fig. 4 is a schematic diagram of the separation structure of the compaction plate and the base of the present invention;
Fig. 5 is a schematic diagram of the separation structure of the calibration mechanism of the present invention;
Fig. 8 is a schematic diagram of the implementation of the present invention.
Reference numerals: 1. base; 2. column; 21. guide table; 22. chute; 23. flange strip; 31. test slot; 32. compaction plate; 33. calibration support; 34. calibration piece; 41. suspension; 42. fixed pulley, 43. rope hook; 44. movable pulley; 45. hanger; 46. rope; 47. wheel disc spindle bracket; 48. winding wheel disc; 49. driving device; 51. hanging plate; 52. tester; 53. striking plate piece; 54. bearing frame; 55. bearing; 61. distance-adjusting rail; 62. sliding piece; 63. stopper; 64. high-speed camera; 65. optical lens.
Specific Implementation Methods
In order to make the objective, technical scheme and advantages of the present invention more clear, the present invention will be further described in detail with reference to specific embodiments and figures. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention.
Embodiment 1
As shown in Figs. 1-6, the subgrade compactness detection device provided by the invention comprises a base 1 placed on the subgrade surface to be detected, and a compaction mechanism comprises a test slot 31 arranged on the base 1; a compaction plate 32 is placed inside the test slot 31.
A through column 2 is arranged above the test slot 31, and a guide table 21 is arranged at the corner of the column 2; the inner wall of the guide table 21 is provided with a chute 22; the side edge of the chute 22 is formed with a raised flange strip 23.
The pulley mechanism comprises a suspension 41 arranged above the column 2; a fixed pulley 42 is installed at the lower part of the suspension 41, a protruding rope hook 43 is installed at the lower part of the fixed pulley 42, and a movable pulley 44 is arranged below; a hanger 45 is installed at the bottom of the fixed pulley 42; one side of the movable pulley 44 is provided with a wheel disc spindle bracket 47 installed on the base 1, and a winding wheel disc 48 is installed in the wheel disc spindle bracket 47, with a rope shaft passing between them; one end of the rope shaft is connected to the output end of the driving device 49, and the outer wall is coiled with a rope 46 which passes through the fixed pulley 42 and the movable pulley 44 in turn; one end of the rope 46 far away from the rope shaft is fixed on the rope hook 43.
The hammer mechanism comprises a hanging plate 51 installed at the bottom of the 5 hanger 45, and a striking plate piece 53 is installed below the hanging plate 51; a tester 52 is arranged at the top of the striking plate piece 53, and a protruding bearing frame 54 is arranged at the corner of the hanging plate 51; a rotatable bearing 55 is installed in the bearing frame 54.
It should be noted that the striking plate piece 53, the column 2 and the compaction plate 32 are arranged in parallel. The striking plate piece 53 slides downward along the inner cavity of the column 2, and the falling striking plate piece 53 impacts downward on the surface of the compaction plate 32. Because the structures are centrally symmetrical, the forces at each contact point are balanced.
In this embodiment, the hammer mechanism is controlled to fall down or rise up through the operation of the pulley mechanism. The following falling process is taken as an example: the rope 48 coiled on the rope shaft in the winding wheel disc 48 is loosened, and the movable pulley 44 moves to the end far away from the fixed pulley 42 under the action of the rope 46. The hammer mechanism connected with the hanger 45 on the movable pulley 44 begins to fall, and the specifications of the hanging plate 51 and the top opening of the column 2 match, and when falling, it enters the inner cavity of the column 2, and at this time, the bearing 55 installed on the bearing frame 54 at the corner of the hanging plate 51 enters the guide table 21; the edge of the bearing 55 is attached to the clamping surfaces of the chute 22 and the flange strip 23, and the bearing 55 rotates along the bearing frame 54 while sliding relative to the chute 22 during contact with the chute 22. In the process of falling, the friction force at the contact position between the hanging plate 51 and the column 2 is dispersed by the rotation of the bearing 55, so that the striking plate piece 53 in the bottom keeps a constant impact force to impact the compaction plate 32; the compaction plate 32 drops down to subgrade test layer along test slot 31, and tester 52 installed on striking plate piece 53 receives force feedback and performs numerical conversion of compaction data.
The above steps are repeated for multiple measurements, and the average value of multiple data is taken as the final data of compactness detection.
As shown in Figs. 1-2, the movable pulley 44 rises or falls synchronously with the winding and unwinding of the rope 46, and the falling distance of the movable pulley 44 relative to the fixed pulley 42 is the impact distance. When the fixed pulleys and movable pulleys are assembled into a pulley block for use, the number of strands of rope 46 bypassing the movable pulley 44 can be increased, so that the resistance can be shared on more strands of rope 46, thus achieving the objective of saving labor, and the lifting of the striking plate piece 53 is convenient in the labor-saving state. It should be noted that when the movable pulley 44 falls, it is not affected by the fixed pulley 42, so that the striking plate piece 53 can impact the compaction plate 32 at a constant distance.
As an example of the installation of the compaction plate 32 in the test slot 31, the side wall of the column 2 is provided with a notch, and the specification of the notch is larger than that of the compaction plate 32; the compaction plate 32 is placed in the test slot 31 at the contact position between the bottom of the column 2 and the base 1 along the notch of the column 2, and the auxiliary compaction plate 32 is in contact with the subgrade surface.
Embodiment 2
As shown in Figs. 3-6, the compaction mechanism also includes a calibration support 33 formed at the edge of the compaction plate 32, and a calibration piece 34 for assisting calibration is formed at the top of the calibration support 33.
The calibration mechanism comprises a distance-adjusting rail 61 arrange on the base 1, a sliding piece 62 is slidably installed in the distance-adjusting rail 81, a high-speed camera 64 is installed at the top of the sliding piece 62, and an optical lens 65 is formed on the end face of the high-speed camera 84 facing the notch of the column 2.
In another embodiment, the calibration support 33 at the edge of the compaction plate 32 is equipped with a calibration piece 34 for shooting and tracking by a high-speed camera 64. Because the optical lens 65 of the high-speed camera 64 can shoot the height change of the calibration piece 34 on the compaction plate 32 before and after the impact through the gap of the column 2, the distance of the compaction plate 32 sinking into the subgrade surface layer under a single impact can be analyzed by the high point position of the calibration piece 34 in the photos before and after, providing displacement reference data except the force feedback data of the tester 52.
In an alternative embodiment, the terminal equipment wirelessly connected to the high-speed camera 64 is in communication connection with the driving device 49; the reference data of the forward and backward displacement of the calibration piece 34 on the compaction plate 32 photographed by the high-speed camera 64 is obtained through the comparison of the terminal equipment, and the obtained displacement difference is transmitted to the controller of the driving device 49; the controller sends an instruction to the driving device 49 to unwind the rope 46, so that the distance between the striking plate piece 53 under the hanger 45 and the compaction plate 32 is always the same, so as to ensure that the impact force of the striking plate piece 53 is constant, prevent the impact distance from changing and affect the impact force due to the subsidence of the compaction plate 32 before and after, and keep the data measured by the tester 52 accurate.
It should be noted that the high-speed camera 64 is movably installed on the base 1, and can be slidably installed along the distance-adjusting rail 61, and is close to or far away from the notched part of the column 2, so that when the included angle between the optical lens 65 and the calibration piece 34 is about 30°, the average error in the "in-plane before and after taking photos" is the smallest, and The feedback difference between the distance before and after the compaction plate 32 sinks into the subgrade is the most accurate. Before each impact on the compaction plate 32, the included angle between the optical lens 65 and the calibration piece 34 is adjusted to be within the range of about 30° to ensure the accuracy of the displacement reference data.
In order to facilitate the positioning of the high-speed camera 64 after sliding, further, protruding stoppers 63 are symmetrically installed on both sides of the high-speed camera 64, and the high-speed camera 84 and the movable end face of the distance-adjusting rail 61 are locked by the stoppers 63.
Among them, the stopper 63 in the application is of a magnetic attraction structure, and the stopper 63 is adsorbed on the upper wall of the distance-adjusting rail 61, so that the position of the high-speed camera 64 can be limited without additional bolt structure, plug-in structure and fixing structure.
It should be understood that the above-mentioned specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute limitations of the present invention. Therefore, any modification, equivalent substitution, improvement, etc. made without departing from the spirit and scope of the invention should be included in the protection scope of the invention. Furthermore, that append claims of the present invention are intend to cover all changes and modifications that come within the scope and boundary of the appended claims, or the equivalents of such scope and boundaries.

Claims (10)

ConclusiesConclusions 1. Inrichting voor het meten van de verdichtingsgraad van een wegbed, met het kenmerk, dat de inrichting de volgende elementen omvat: - een basis (1), die op het te meten wegbedoppervlak wordt geplaatst, en een verdichtingsmechanisme, dat een testgoot (31) omvat, die op de basis (1) is aangebracht, waarbij in het binnenste van de testgoot (31) een verdichtingsplaat (32) is aangebracht; - een doorgaande zuil (2), die boven de testgoot (31) is geplaatst, waarbij op de hoek van de zuil (2) een geleidingsplaat (21) is aangebracht en de binnenwand van de geleidings- plaat (21) is voorzien van een goot (22), waarvan de zijrand is gevormd door een flensstrip (23); - een katrolmechanisme, dat een ophanging (41) omvat die boven de zuil (2) is aangebracht, waarvan de onderkant is voorzien van een vaste katrol (42) en de onderkant van de vaste katrol (42) is voorzien van een uitstekend touwhaakstuk (43), met daaronder een beweegbare katrol (44); de onderkant van de vaste katrol (42) is voorzien van een hangende drager (45); aan één zijde van de beweegbare katrol (44) is een op de basis (1) geplaatste wielasbeugel (47) gemonteerd, waarin een oprolwielschijf (48) is aangebracht; beide zijn verbonden door een touwas, waarvan één uiteinde is verbonden met de uitvoer van het aandrijfmechanisme (49), en een touw (46) dat achtereenvolgens door de vaste katrol (42) en de beweegbare katrol (44) loopt, wordt op de buitenwand gewonden. - een hamerinrichting, die een op de onderkant van de hangende drager (45) gemonteerde ophangplaat (51) omvat, waarbij onder de ophangplaat (51) een hamerplaat (53) is gemonteerd en aan de bovenkant van de hamerplaat (53) een meetsysteem (52) is aangebracht en de hoek van de ophangplaat (51) is voorzien van een een uitstekend lagerframe (54), waarin een roteerbaar lager (55) is geïnstalleerd.1. Device for measuring the degree of compaction of a road bed, characterized in that the device comprises the following elements: - a base (1), which is placed on the road bed surface to be measured, and a compaction mechanism, which includes a test trough (31 ) which is mounted on the base (1), wherein a compaction plate (32) is mounted in the interior of the test trough (31); - a continuous column (2), which is placed above the test trough (31), whereby a guide plate (21) is fitted on the corner of the column (2) and the inner wall of the guide plate (21) is provided with a gutter (22), the side edge of which is formed by a flange strip (23); - a pulley mechanism, comprising a suspension (41) arranged above the column (2), the bottom of which is provided with a fixed pulley (42) and the bottom of the fixed pulley (42) is provided with a projecting rope hook ( 43), with a movable pulley (44) underneath; the bottom of the fixed pulley (42) is provided with a hanging support (45); on one side of the movable pulley (44) a wheel axle bracket (47) placed on the base (1) is mounted, in which a roll-up wheel sheave (48) is arranged; both are connected by a rope shaft, one end of which is connected to the output of the driving mechanism (49), and a rope (46) passing successively through the fixed pulley (42) and the movable pulley (44) is placed on the outer wall injured. - a hammer device, which comprises a suspension plate (51) mounted on the underside of the hanging support (45), wherein a hammer plate (53) is mounted under the suspension plate (51) and a measuring system (53) is mounted on the top of the hammer plate (53). 52) is mounted and the corner of the mounting plate (51) is provided with a projecting bearing frame (54), in which a rotatable bearing (55) is installed. 2. Inrichting voor het meten van de verdichtingsgraad van een wegbed volgens conclusie 1, met het kenmerk, dat de hamerplaat (53), de zuil (2) en de verdichtingsplaat (32) parallel zijn geplaatst, en dat de structuren elk centraal symmetrisch zijn.Device for measuring the degree of compaction of a road bed according to claim 1, characterized in that the hammer plate (53), the column (2) and the compaction plate (32) are arranged in parallel, and in that the structures are each centrally symmetrical . 3. Inrichting voor het meten van de verdichtingsgraad van een wegbed volgens conclusie 1, met het kenmerk, dat de rand van het lager (55) is vastgemaakt aan de klemoppervlakken van de goot (22) en de flensstrip (23), en dat het lager (55) ten opzichte van de goot (22) kan schuiven.Device for measuring the degree of compaction of a roadbed according to claim 1, characterized in that the edge of the bearing (55) is attached to the clamping surfaces of the channel (22) and the flange strip (23), and in that it bearing (55) can slide relative to the gutter (22). 4. Inrichting voor het meten van de verdichtingsgraad van een wegbed volgens conclusie 1, met het kenmerk, dat het uiteinde van het touw (46) dat van de touwas af ligt is, bevestigd aan het touwhaakstuk (43).Device for measuring the degree of compaction of a road bed according to claim 1, characterized in that the end of the rope (46) lying away from the rope axis is attached to the rope hook piece (43). 5. Inrichting voor het meten van de verdichtingsgraad van een wegbed volgens conclusie 1, met het kenmerk, dat de beweegbare katrol (44) synchroon omhoog gaat of omlaag valt met het oprollen of afrollen van het touw (48), waarbij de neerwaartse afstand tussen de beweegbare katrol (44) en de vaste katrol (42) de impactafstand is.A device for measuring the degree of compaction of a roadbed according to claim 1, characterized in that the movable pulley (44) rises or falls synchronously with the winding or unwinding of the rope (48), the downward distance between the movable pulley (44) and the fixed pulley (42) is the impact distance. 6. Inrichting voor het meten van de verdichtingsgraad van een wegbed volgens conclusie 1, met het kenmerk, dat de zijwand van de zuil (2) is voorzien van een inkeping, waarbij de afmeting van de inkeping groter is dan de afmeting van de verdichtingsplaat (32).Device for measuring the degree of compaction of a road bed according to claim 1, characterized in that the side wall of the column (2) is provided with a notch, the size of the notch being larger than the size of the compaction plate ( 32). 7. Inrichting voor het meten van de verdichtingsgraad van een wegbed volgens conclusie 6, met het kenmerk, dat het verdichtingsmechanisme ook een kalibratiesteun (33) omvat, die aan de rand van de verdichtingsplaat (32) ie gevormd, waarbij aan de bovenkant van de kalibratiesteun (33) een hulpkalibratie-element (34) is gevormd voor assistentie bij het kalibreren.Device for measuring the degree of compaction of a road bed according to claim 6, characterized in that the compaction mechanism also comprises a calibration support (33) formed on the edge of the compaction plate (32), whereby at the top of the calibration support (33) an auxiliary calibration element (34) is formed to assist with calibration. 8. Inrichting voor het meten van de verdichtingsgraad van een wegbed volgens conclusie 7, met het kenmerk, dat het kalibratiemechanisme een hoogteverstellingsspoor (61) omvat, dat op de basis (1) is aangebracht, waarbij in het hoogteverstellingsspoor (61) een glijdend element (62) is aangebracht, waarvan de bovenkant is voorzien van een high- speed camera (64), waarbij de high-speed scamera (64) een optische lens (65) heeft, die op het uiteinde is gevormd dat naar de inkeping van de zuil (2) toe ligt.Device for measuring the degree of compaction of a road bed according to claim 7, characterized in that the calibration mechanism comprises a height adjustment track (61) arranged on the base (1), a sliding element in the height adjustment track (61) (62) is provided, the top of which is provided with a high-speed camera (64), the high-speed camera (64) having an optical lens (65) formed on the end that faces the notch of the column (2) is facing. 9. Inrichting voor het meten van de verdichtingsgraad van een wegbed volgens conclusie 8, met het kenmerk, dat er symmetrisch uitstekende begrenzingsstukken (63) zijn gemonteerd aan beide zijden van de high-speed scamera (64), waarbij de high-speed camera (64) is vergrendeld met het beweegbare eindvlak van het hoogteverstellingsspoor (61) door de begrenzingsstukken (63).Device for measuring the degree of compaction of a roadbed according to claim 8, characterized in that symmetrically projecting boundary pieces (63) are mounted on both sides of the high-speed camera (64), the high-speed camera (64) 64) is locked to the movable end surface of the height adjustment track (61) by the limit pieces (63). 10. Inrichting voor het meten van de verdichtingsgraad van een wegbed volgens conclusie 9, met het kenmerk, dat het draadloos verbonden eindapparaat van de high-speed camera (64) communicatief is verbonden met de aandrijfeenheid (49).Device for measuring the degree of compaction of a roadbed according to claim 9, characterized in that the wirelessly connected terminal of the high-speed camera (64) is communicatively connected to the drive unit (49).
NL2036750A 2023-03-06 2024-01-04 Subgrade compactness detection device NL2036750A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310206451.XA CN116201093A (en) 2023-03-06 2023-03-06 Roadbed compactness check out test set

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Publication number Priority date Publication date Assignee Title
CN116397614B (en) * 2023-06-08 2023-08-29 中国水利水电第七工程局有限公司 Automatic location compactness nondestructive test car
CN116793864B (en) * 2023-06-27 2024-04-02 郑晓明 Roadbed compactness detection method for road detection

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