A cement stabilized crushed stone base compaction detection device and detection method

Abstract

The present invention discloses a cement stabilized gravel base compaction detection device and a detection method thereof, and the present invention relates to the technical field of cement stabilized gravel base compaction detection. The cement stabilized gravel base compaction detection device and the detection method thereof, by integrating the sand filling part and the drilling part on the rotating adjustment part, can directly perform the in-situ sand filling operation by rotating after completing the drilling sampling of the water-stable base, and through the cooperation of the rotating driving part, the height adjusting part and the accelerating component, can not only provide the drilling part with a rotating driving force, but also realize the uniform sand spreading of the sand filling part, with a high degree of automation, can realize the weighing of the wet weight and dry weight of the water-stable base sample, and the weighing of the weight of the sand filling part before and after the sand filling, thereby realizing the direct calculation of the compaction of the water-stable base, convenient operation, effectively reducing manual intervention, and more convenient to use.

Description

Technical Field

[0001] The invention relates to the technical field of cement stabilized crushed stone base compaction degree detection, in particular to a cement stabilized crushed stone base compaction degree detection device and a detection method thereof. Background Art

[0002] Cement stabilized crushed stone base is made of graded crushed stone as aggregate, with a certain amount of cementitious materials and sufficient mortar volume to fill the gaps between aggregates, and spread and compacted according to the principle of interlocking. Its compaction is close to density, and its strength mainly depends on the interlocking principle between crushed stones. At the same time, there is enough mortar volume to fill the gaps between aggregates. It has high initial strength, and the strength increases with age and quickly forms a board body, so it has high strength, good impermeability and frost resistance. After cement stabilized crushed stone is alive, it will not be muddy in rain, and the surface is solid, which is an ideal base material for high-grade pavement.

[0003] During the laying process of cement-stabilized gravel base, compaction control is very important. Conventional methods for testing the compaction of cement-stabilized gravel base include sand filling method, nuclear moisture density meter test, hammer method, etc. However, the compaction test methods using moisture density meter test and hammer method are not certified by industry standards. After the test, they need to be calibrated compared with the results of the sand filling method. However, the existing traditional sand filling method involves many tools and is not easy to integrate. The steps of switching tools for measurement are cumbersome, and manual digging is inefficient, which is not conducive to the rapid and orderly progress of highway construction.

[0004] For example, a cement-stabilized gravel base compaction control device with application number 202022132096.0 integrates a weighing platform, a soil drilling device and a sand filling device into one through a frame, so that the compaction degree detection of the cement-stabilized gravel base by the sand filling method can be carried out in an orderly and fast manner. However, after drilling the soil, the frame needs to be moved to realize the sand filling operation of the sand filling device.

[0005] Based on the retrieval of the above information, it can be seen that when the sand injection method is used to detect the compaction degree of cement-stabilized gravel base, a large amount of manual intervention is still required, the operation is relatively inconvenient, and the compaction degree cannot be directly and effectively calculated. The excavated samples also need to be dried, which makes the sample preservation difficult and affects the calculation accuracy of the compaction degree. For this reason, a cement-stabilized gravel base compaction degree detection device and a detection method are proposed. The compaction degree calculation of the cement-stabilized gravel base can be realized without a mobile device. The calculation accuracy is high and the operation is more convenient. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention provides a cement-stabilized gravel base compaction detection device and a detection method thereof, which solves the problems of the existing sand injection method having serious manual intervention and being unable to timely and effectively calculate the compaction of the cement-stabilized gravel base, which has a negative impact on the calculation accuracy of the compaction.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a cement-stabilized gravel base compaction detection device, comprising a base plate and a detection bracket fixedly installed on the top of the base plate, the detection bracket is provided with a height adjustment member, the movable end of the height adjustment member is provided with a rotation adjustment member, the top and bottom of the rotation adjustment member are respectively provided with a sand filling member and a drilling member, the interior of the rotation adjustment member is also provided with a rotation driving member, the rotation driving member is used in conjunction with the sand filling member and the drilling member, and the detection bracket is also provided with an acceleration component used in conjunction with the rotation driving member, the acceleration component is used in conjunction with the height adjustment member.

[0008] In order to facilitate the drilling operation and the sand filling operation, the present invention is further configured as follows: the height adjustment member includes an electric telescopic rod, the electric telescopic rod is fixedly mounted on the top of the detection bracket, the telescopic end of the electric telescopic rod passes through the detection bracket and is fixedly mounted with a push plate, and the front and rear sides of the bottom of the push plate are respectively fixedly mounted with a first vertical plate and a second vertical plate;

[0009] Two auxiliary rods are fixedly installed on the top of the push plate, and the top ends of the two auxiliary rods both penetrate the push plate and are fixedly connected with a handle.

[0010] In order to achieve smooth switching between drilling operation and sand filling operation, the present invention is further configured as follows: the rotary adjustment member includes a stepper motor, the stepper motor is fixedly mounted on the front of the first vertical plate, and the output end of the stepper motor passes through the first vertical plate and is fixedly mounted with a rotary box;

[0011] The bottom and the top of the rotating box are respectively penetrated and fixedly mounted with a first docking sleeve and a second docking sleeve.

[0012] In order to facilitate the drilling operation, the present invention is further configured as follows: the drilling member includes a drill barrel, the top of the drill barrel is fixedly connected to an assembly rod, one end of the assembly rod passes through a first docking barrel and is fixedly connected to a first chuck by a bolt, and the bottom of the first docking barrel is fixedly connected to the top of the drill barrel;

[0013] A first spline groove is formed on the top of the assembly rod;

[0014] The top of the base plate is provided with a positioning hole matched with the outer circumference of the drill tube.

[0015] In order to facilitate the timely and effective weighing of the wet weight and dry weight of the cement-stabilized gravel base sample after drilling sampling, the present invention is further configured as follows: a first weighing ring is sleeved and fixedly installed on the outer periphery of the first docking tube, a plurality of guide rods are penetrated and slidably installed on the top of the drill tube, a metal tube is fixedly connected to the bottom ends of the plurality of guide rods, the outer periphery of the metal tube is in sliding contact with the inner wall of the drill tube, the top end of the guide rod is fixedly connected to a limit plate, a buffer spring is sleeved on the outer periphery of the guide rod, and the two ends of the buffer spring are respectively in contact with the limit plate and the opposite side of the drill tube;

[0016] A heating plate is also embedded on the top of the drill tube.

[0017] In order to ensure the smooth progress of drilling, the present invention is further configured as follows: the rotary drive member includes a servo motor, the output end of the servo motor is fixedly connected to a spline shaft through a coupling, the servo motor is fixedly installed with a back plate through bolts, the back of the back plate is fixedly connected to a rotating shaft, and the rear end of the rotating shaft is fixedly connected to a square plate;

[0018] The back of the rotating box is provided with a long groove adapted to the rotating shaft, the surface of the second vertical plate is provided with a square groove adapted to the square plate, a reinforcing rod is fixedly connected between the top and the bottom of the inner cavity of the square groove, and the reinforcing rod is arranged through the square plate;

[0019] The spline shaft is used in conjunction with the first spline groove.

[0020] In order to realize convenient cooperation and separation of the rotating driving member with the first spline groove and the second spline groove described below, the present invention is further configured as follows: the acceleration component includes a waist plate and a U-shaped frame, the first tooth plates are fixedly installed on both sides of the U-shaped frame, and the rotation of the waist plate is equipped with two small gears and two large gears, the two large gears are respectively meshed with the two small gears, and the two small gears are respectively meshed with the two first tooth plates, and the two sides of the back of the second vertical plate are fixedly connected with the second tooth plates through connecting rods, and the two second tooth plates are respectively used in conjunction with the two large gears, and the bottom of the waist plate is fixedly installed with an L-shaped plate, and the surface of the L-shaped plate is fixedly connected with a vertical rod, the top of the vertical rod passes through the U-shaped frame, the outer periphery of the vertical rod is sleeved with a first return spring, and the two ends of the first return spring are respectively fixedly connected to the bottom of the U-shaped frame and the surface of the L-shaped plate;

[0021] The waist plate is fixedly mounted on the detection bracket, the U-shaped frame is sleeved and fixedly mounted on both sides of the square plate, and the top end of the vertical rod also penetrates the square plate and extends to the top of the square plate.

[0022] In order to facilitate sand filling, the present invention is further configured as follows: the sand filling part includes a sand filling cylinder, the sand filling cylinder is fixedly installed on the top of the second docking cylinder, the bottom of the inner cavity of the sand filling cylinder is fixedly connected to a second weighing ring, the top of the second weighing ring is fixedly installed with a surrounding ring and a plurality of blocking rods, the plurality of blocking rods are arranged inside the surrounding ring, and the outer periphery of the surrounding ring is in sliding contact with the inner wall of the sand filling cylinder, the outer peripheries of the plurality of blocking rods are jointly sleeved with a blocking turntable, the surrounding ring is arranged below the blocking turntable, the outer periphery of the blocking turntable is in sliding contact with the interior of the sand filling cylinder, the bottom of the blocking turntable is fixedly connected with a support rod, the bottom end of the support rod sequentially passes through the second weighing ring and the sand filling cylinder, and is fixedly connected with a spline column, the outer periphery of the support rod is also sleeved with a second return spring, and the two ends of the second return spring are respectively fixedly connected to the side opposite to the sand filling cylinder and the spline column;

[0023] The sand filling cylinder is also used in conjunction with the positioning hole.

[0024] In order to ensure the uniformity of sand filling, the present invention is further configured as follows: the bottom of the inner cavity of the second butt-jointing sleeve is clamped with a second chuck through a plurality of auxiliary bolts, a sleeve rod is fixedly installed inside the second chuck through bolts, a second spline groove matching the spline shaft is opened at the bottom of the sleeve rod, and the second spline groove is used in conjunction with the spline column;

[0025] One side of the sand filling cylinder is also connected with an inclined pipe, the outer periphery of the inclined pipe is sleeved and threadedly mounted with a sealing cover, and the surface of the surrounding ring is provided with a docking port connected with the inclined pipe.

[0026] The present invention provides a cement stabilized macadam base compaction detection device and detection method thereof, which has the following beneficial effects:

[0027] (1) The present invention integrates the sand filling component and the drilling component on the rotating adjustment component. After the drilling sampling of the water-stable base layer is completed, the in-situ sand filling operation can be directly performed by rotation. The cooperation of the rotating drive component, the height adjustment component and the acceleration component can not only provide a rotational driving force for the drilling component, but also realize the uniform sand spreading of the sand filling component. While the degree of automation is high, the wet weight and dry weight of the water-stable base layer sample can be weighed, as well as the weight of the sand filling component before and after sand filling, thereby realizing the direct calculation of the compaction degree of the water-stable base layer. While the operation is convenient, it effectively reduces manual intervention and is more convenient to use.

[0028] (2) The present invention provides conditions for measuring the wet weight of the water-stable base sample after it falls into the metal cylinder through the coordinated arrangement of the first weighing ring, the metal cylinder, the guide rod, the limit plate and the buffer spring, and realizes the measurement of its dry weight through the arrangement of the heating plate. The weight before and after sand spreading is measured through the arrangement of the second weighing ring and the surrounding ring.

[0029] (3) The present invention realizes the separation of the sealing turntable and the sealing rod when the spline shaft is inserted into the second spline groove through the arrangement of the spline column, the support rod, the second return spring, the sealing rod and the sealing turntable, thereby facilitating the falling of the standard sand. Moreover, after the spline shaft is separated from the second spline groove, the sealing turntable is automatically sealed by the sealing rod under the action of the second return spring.

[0030] (4) The present invention can realize the rapid descent of the first tooth plate during the descent of the second vertical plate by cooperating with the first tooth plate, the second tooth plate, the small gear and the large gear, and then accelerate the descent of the spline shaft on the servo motor by cooperating with the U-shaped frame, the square plate, the rotating shaft and the back plate to ensure that the spline shaft is effectively inserted into the first spline groove or the second spline groove, and through the arrangement of the L-shaped plate, the first return spring and the vertical rod, it is ensured that the spline shaft can be smoothly inserted into the first spline groove or the second spline groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0032] Figure 2 It is a schematic diagram of the connection between the substrate and the detection support structure of the present invention;

[0033] Figure 3 It is a schematic diagram of the connection between the detection bracket and the height adjustment member structure of the present invention;

[0034] Figure 4 It is a schematic diagram of the connection between the height adjustment member and the rotation adjustment member structure of the present invention;

[0035] Figure 5 It is a schematic diagram of the connection between the rotating box, the square slot and the rotating driving member structure of the present invention;

[0036] Figure 6 It is a schematic diagram of the connection between the rotary drive member and the acceleration assembly structure of the present invention;

[0037] Figure 7 It is a schematic diagram of the connection between the second vertical plate, the square groove, the reinforcement rod and the second tooth plate structure of the present invention;

[0038] Figure 8 It is a schematic diagram of the connection between the second butt joint sleeve and the sand filling piece structure of the present invention;

[0039] Fig. 9 It is a schematic diagram of the expansion of the second chuck, sleeve rod, second spline groove, blocking rotary plate, support rod, spline column and second return spring structure of the present invention;

[0040] Fig.10 It is a schematic diagram of the connection between the first docking sleeve and the drilling member structure of the present invention;

[0041] Fig.11It is a connection diagram of the drill tube, the assembly rod, the first chuck, the first spline groove, the guide rod, the metal tube, the limit plate and the buffer spring structure of the present invention.

[0042] In the figure:

[0043] 1. substrate; 101. positioning hole;

[0044] 2. Detection bracket;

[0045] 3. Height adjustment member; 301. Electric telescopic rod; 302. Push plate; 303. First vertical plate; 304. Second vertical plate; 305. Auxiliary rod; 306. Handle; 307. Square groove;

[0046] 4. Rotary adjustment member; 401. Stepping motor; 402. Rotary box; 403. First docking sleeve; 404. Second docking sleeve; 405. First weighing ring; 406. Auxiliary bolt; 407. Second chuck; 408. Sleeve rod; 409. Second spline groove; 4010. Long groove;

[0047] 5. Sand filling part; 501. Sand filling cylinder; 502. Second weighing ring; 503. Encircling ring; 504. Blocking rod; 505. Blocking turntable; 506. Support rod; 507. Spline column; 508. Second return spring; 509. Inclined tube; 5010. Sealing cover; 5011. Docking port;

[0048] 6. Drilling member; 601. Drill barrel; 602. Assembly rod; 603. First chuck; 604. First spline groove; 605. Guide rod; 606. Metal cylinder; 607. Limit plate; 608. Buffer spring; 609. Heating plate;

[0049] 7. Rotating drive member; 701. Servo motor; 702. Spline shaft; 703. Back plate; 704. Rotating shaft; 705. Square plate; 706. Reinforcement rod;

[0050] 8. Acceleration assembly; 801. Waist plate; 802. U-shaped frame; 803. First tooth plate; 804. Small gear; 805. Large gear; 806. Second tooth plate; 807. L-shaped plate; 808. Vertical pole; 809. First return spring. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0052] See also Figure 1-11 , the embodiment of the present invention provides the following technical solutions:

[0053] Embodiment 1: A cement-stabilized gravel base compaction detection device comprises a base plate 1, a detection bracket 2, a height adjustment member 3, a rotation adjustment member 4, a drilling member 6 and an acceleration assembly 8, wherein the detection bracket 2 is composed of four vertical rods and a horizontal frame, the four vertical rods are fixedly installed around the bottom of the horizontal frame, and the bottom ends of the four vertical rods are fixedly installed on the top of the base plate 1, and a positioning hole 101 is opened on the top of the base plate 1.

[0054] As a preferred solution, in order to facilitate the adjustment of the height of the drilling member 6 relative to the water-stable base layer, the height adjustment member 3 includes an electric telescopic rod 301, which is electrically connected to an external power supply and controlled by a control switch. The electric telescopic rod 301 is fixedly installed on the top of the detection bracket 2, and the telescopic end of the electric telescopic rod 301 passes through the detection bracket 2 and is fixedly installed with a push plate 302. The front and rear sides of the bottom of the push plate 302 are respectively fixedly installed with a first vertical plate 303 and a second vertical plate 304. In order to facilitate the carrying of the device, the push plate 302 Two auxiliary rods 305 are fixedly installed on the top, and the top ends of the two auxiliary rods 305 pass through the push plate 302 and are fixedly connected with a handle 306. The rotating adjustment member 4 includes a stepper motor 401, which is electrically connected to an external power supply and controlled by a control switch. The stepper motor 401 is fixedly installed on the front side of the first vertical plate 303, and the output end of the stepper motor 401 passes through the first vertical plate 303 and is fixedly installed with a rotating box 402. The bottom of the rotating box 402 passes through and is fixedly installed with a first docking tube 403.

[0055] As a preferred embodiment, the drilling member 6 includes a drill tube 601, wherein the outer periphery of the drill tube 601 is adapted to the positioning hole 101, and an assembly rod 602 is fixedly connected to the top of the drill tube 601, one end of the assembly rod 602 passes through the first docking tube 403, and is fixedly connected to the first chuck 603 by bolts, and the bottom of the first docking tube 403 is fixedly connected to the top of the drill tube 601. In order to facilitate the smooth drilling and sampling of the drill tube 601, the rotating drive member 7 includes a servo motor 701, and the servo motor 701 is electrically connected to the external power supply, and is controlled by The servo motor 701 is controlled by a control switch, the output end of the servo motor 701 is fixedly connected to the spline shaft 702 through a coupling, the top of the assembly rod 602 is provided with a first spline groove 604, the spline shaft 702 and the first spline groove 604 are used in conjunction with the servo motor 701, and a back plate 703 is fixedly installed by bolts, the back of the back plate 703 is fixedly connected to a rotating shaft 704, and the rear end of the rotating shaft 704 is fixedly connected to a square plate 705, so that the spline shaft 702 and the first spline groove 604 can be conveniently matched by moving the square plate 705 for lifting.

[0056] As a preferred solution, in order to achieve automatic plug-in cooperation between the spline shaft 702 and the first spline groove 604, a long groove 4010 adapted to the rotating shaft 704 is opened on the back of the rotating box 402, and a square groove 307 adapted to the square plate 705 is opened on the surface of the second vertical plate 304. A reinforcing rod 706 is fixedly connected between the top and bottom of the inner cavity of the square groove 307, and the reinforcing rod 706 is arranged through the square plate 705. The acceleration component 8 includes a waist plate 801 and a U-shaped frame 802. The first tooth plate 803 is fixedly installed on both sides of the U-shaped frame 802. The waist plate 801 is rotatably installed with two small gears 804 and two large gears 805. The two large gears 805 are respectively meshed with the two small gears 804, and the two small gears 804 are respectively meshed with the two first tooth plates 803. In coordination, both sides of the back of the second vertical plate 304 are fixedly connected with the second tooth plates 806 through connecting rods, and the two second tooth plates 806 are respectively used in conjunction with the two large gears 805, an L-shaped plate 807 is fixedly installed at the bottom of the waist plate 801, and a vertical rod 808 is fixedly connected to the surface of the L-shaped plate 807, and the top of the vertical rod 808 passes through the U-shaped frame 802, and the outer periphery of the vertical rod 808 is sleeved with a first return spring 809, and the two ends of the first return spring 809 are respectively fixedly connected to the bottom of the U-shaped frame 802 and the surface of the L-shaped plate 807, the waist plate 801 is fixedly installed on the two vertical rods set on the rear side of the detection bracket 2, the U-shaped frame 802 is sleeved and fixedly installed on both sides of the square plate 705, and the top of the vertical rod 808 also passes through the square plate 705 and extends to the top of the square plate 705.

[0057] As a preferred solution, in order to facilitate the measurement of the wet weight of the removed sample, a first weighing ring 405 is sleeved and fixedly installed on the outer periphery of the first docking tube 403. The first weighing ring 405 serves as a weighing sensor for weight weighing. A plurality of guide rods 605 are penetrated and slidably installed on the top of the drill barrel 601. The bottom ends of the plurality of guide rods 605 are commonly fixedly connected with a metal tube 606. The outer periphery of the metal tube 606 is in sliding contact with the inner wall of the drill barrel 601. The top of the guide rod 605 is fixedly connected with a limit plate 607. The outer periphery of the guide rod 605 is also sleeved with a buffer spring 608. The two ends of the buffer spring 608 are respectively in contact with the limit plate 607 and the opposite side of the drill barrel 601. In order to achieve the measurement of dry weight, a heating plate 609 is also embedded in the top of the drill barrel 601. The heating plate 609 is electrically connected to an external power supply and controlled by a control switch.

[0058] In this embodiment, after completing the sample collection, the drill tube 601 is turned over to face the opening upward, and the sample is smashed into the metal tube to achieve the wet weight measurement. With the heating of the heating plate 609, when the weight measured by the first weighing ring 405 no longer changes, the dry weight measurement is achieved.

[0059] Embodiment 2: This embodiment is an improvement of the previous embodiment. It is a device for detecting the compaction degree of a cement-stabilized gravel base layer, and further includes a sand-filling component 5. The sand-filling component 5 includes a sand-filling cylinder 501. The sand-filling cylinder 501 is also used in conjunction with the positioning hole 101. The sand-filling cylinder 501 is fixedly mounted on the top of the second docking cylinder 404. A second weighing ring 502 is fixedly connected to the bottom of the inner cavity of the sand-filling cylinder 501. The second weighing ring 502 is used as a weighing sensor for weight weighing. A surrounding ring 503 and a plurality of blocking rods 504 are fixedly mounted on the top of the second weighing ring 502. The plurality of blocking rods 504 are arranged inside the surrounding ring 503, and the outer periphery of the surrounding ring 503 is in sliding contact with the inner wall of the sand-filling cylinder 501. The outer peripheries of the plurality of blocking rods 504 are jointly sleeved with a blocking rotary The sealing turntable 505 is provided with a plurality of material holes matched with the sealing rod 504, and the edge part of the top of the inner cavity of the material hole and the bottom of the sealing rod 504 are both chamfered to facilitate the plug-in cooperation between the sealing rod 504 and the sealing turntable 505. The surrounding ring 503 is arranged below the sealing turntable 505, and the outer periphery of the sealing turntable 505 is in sliding contact with the inside of the sand filling cylinder 501. The bottom of the sealing turntable 505 is fixedly connected with a support rod 506, and the bottom end of the support rod 506 passes through the second weighing ring 502 and the sand filling cylinder 501 in turn, and is fixedly connected with a spline column 507. The outer periphery of the support rod 506 is also sleeved with a second return spring 508, and the two ends of the second return spring 508 are respectively fixedly connected to the side opposite to the sand filling cylinder 501 and the spline column 507.

[0060] As a preferred solution, in order to achieve uniform spreading of standard sand, a second docking sleeve 404 is passed through and fixedly installed on the top of the rotating box 402, and a second chuck 407 is clamped on the bottom of the inner cavity of the second docking sleeve 404 through a plurality of auxiliary bolts 406. Figure 8 As shown, while the end of the second chuck 407 is limited by the auxiliary bolt 406, the smooth rotation of the second chuck 407 can also be ensured, the interior of the second chuck 407 is fixed with a sleeve rod 408 by bolts, and the bottom of the sleeve rod 408 is provided with a second spline groove 409 that is compatible with the spline shaft 702, and the second spline groove 409 is used in conjunction with the spline column 507.

[0061] Further explanation, in order to realize convenient replenishment of standard sand, one side of the sand filling cylinder 501 is also connected to an inclined tube 509, the outer periphery of the inclined tube 509 is sleeved and threadedly installed with a sealing cover 5010, and the surface of the surrounding ring 503 is provided with a docking port 5011 connected to the inclined tube 509.

[0062] The advantage of the second embodiment over the first embodiment is that the sand filling operation can be implemented during the weighing of the wet weight and dry weight of the water-stable base sample, and the sand filling mass can be calculated by subsequently turning the sand filling cylinder 501 180 degrees.

[0063] The detection method of the cement stabilized crushed stone base compaction detection device specifically comprises the following steps:

[0064] S1. The base plate 1 is placed on the cement-stabilized gravel base to be tested by the hand-held handle 306, the positioning hole 101 is aligned with the sampling point, the electric telescopic rod 301 is started, the electric telescopic rod 301 is extended, and the push plate 302 is pushed to move the first vertical plate 303 and the second vertical plate 304 downward, the first vertical plate 303 drives the stepping motor 401 to move the rotating box 402 downward, and the rotating box 402 drives the first docking tube 403 to move the drill tube 601 downward;

[0065] S2. During the downward movement of the drill tube 601, the servo motor 701 is controlled to drive the spline shaft 702 to rotate at a low speed. During the downward movement of the second vertical plate 304, the second tooth plate 806 is driven to move downward. When the second tooth plate 806 moves to mesh with the large gear 805, as the second tooth plate 806 continues to descend, the large gear 805 drives the small gear 804 to accelerate the rotation. The small gear 804 drives the first tooth plate 803 to make the U-shaped frame 802 press the first return spring 809 downward. The U-shaped frame 802 drives the square plate 705 to make the rotating shaft 704 drive the back plate 703 to descend. The back plate 703 drives the servo motor 701 to move downward, so that the spline shaft 702 is inserted into the first spline groove 604, until the first tooth plate 803 is no longer meshed with the small gear 804.

[0066] At this time, the spline shaft 702 drives the assembly rod 602 to rotate the drill tube 601. As the electric telescopic rod 301 continues to extend, the drill tube 601 passes through the positioning hole 101 to drill and sample the sampling point.

[0067] S3. After completing the drilling sampling at the set depth, turn off the servo motor 701, control the electric telescopic rod 301 to retract, and the electric telescopic rod 301 drives the push plate 302 to reset, so that the drill tube 601 drives the cement-stabilized gravel base sample to be tested to rise and leave the positioning hole 101, leaving a test pit at the sampling point;

[0068] During the process, the second vertical plate 304 drives the second tooth plate 806 to rise, the second tooth plate 806 drives the large gear 805 to make the small gear 804 rotate in the opposite direction, the small gear 804 drives the first tooth plate 803 to make the U-shaped frame 802 rise, the U-shaped frame 802 drives the square plate 705 to make the rotating shaft 704 drive the back plate 703 to rise, the back plate 703 drives the servo motor 701 to move upward, so that the spline shaft 702 is separated from the first spline groove 604, and during the process, the first reset spring 809 is reset;

[0069] S4, record the weight A of the second weighing ring 502 at this time, control the stepper motor 401 to rotate one-half of a circle, the stepper motor 401 drives the rotating box 402 to rotate, the rotating box 402 drives the first docking tube 403 and the second docking tube 404 to rotate, so that the opening of the sand filling tube 501 faces the positioning hole 101, and the drill tube 601 drives the cement stabilized gravel base sample to be tested to move to the top of the rotating box 402, and the sample is dried:

[0070] The sample of cement-stabilized gravel base to be tested is hit to scatter inside the metal cylinder 606. At this time, the metal cylinder 606 drives the guide rod 605 to make the limit plate 607 drop and fall on the first weighing ring 405. The weight at this time is weighed and recorded as the wet weight B of the sample. Then the heating plate 609 is started. The heating plate 609 heats the metal cylinder 606. The metal cylinder 606 dries the sample of cement-stabilized gravel base to be tested. When the weight weighed by the first weighing ring 405 no longer changes, the weight at this time is recorded as the dry weight C of the sample.

[0071] S5. During the sample drying process, the servo motor 701 is started to rotate at a low speed, and the electric telescopic rod 301 is controlled to extend, so that the spline shaft 702 is inserted into the second spline groove 409, and the sand filling tube 501 enters the positioning hole 101. In this process, the spline shaft 702 squeezes the spline column 507, and the spline column 507 squeezes the second return spring 508, and pushes the blocking turntable 505 down through the support rod 506, so that the blocking turntable 505 is separated from the blocking rod 504. At this time, the standard sand inside the sand filling tube 501 passes through the blocking turntable 505 and falls into the detection pit through the positioning hole 101. During the process, the servo motor 701 drives the spline shaft 702 to rotate the sleeve rod 408, the sleeve rod 408 drives the spline column 507 to rotate the support rod 506, the support rod 506 drives the plugging turntable 505 to rotate, and the standard sand is rotated and sprinkled into the detection pit. When the standard sand no longer falls, the servo motor 701 is turned off, the electric telescopic rod 301 is controlled to shrink, and the electric telescopic rod 301 drives the push plate 302 to reset, so that the sand filling cylinder 501 is separated from the positioning hole 101. During the process, the second reset spring 508 is reset, pushing the spline column 507 to pull the support rod 506 to reset the plugging turntable 505. At this time, the standard sand no longer falls;

[0072] After the sample drying process in S4 is completed, the stepper motor 401 is controlled to rotate half a circle, so that the opening of the sand filling tube 501 faces upward, and the weight D weighed by the second weighing ring 502 is recorded at this time, and the compaction degree of the current sampling point is calculated: ;

[0073] In the formula, is the compaction degree, is the standard sand density, It is the maximum dry density of standard sand.

[0074] As an expanded explanation, in order to facilitate the smooth insertion and matching of the spline shaft 702 with the first spline groove 604 and the second spline groove 409 , the ends of the spline shaft 702 and the second spline groove 409 are chamfered.

[0075] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0076] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the compaction degree of a cement-stabilized crushed stone base layer, comprising a base plate (1) and a detection bracket (2) fixedly mounted on the top of the base plate (1), characterized in that: The detection bracket (2) is provided with a height adjustment member (3), the movable end of the height adjustment member (3) is provided with a rotation adjustment member (4), the top and bottom of the rotation adjustment member (4) are provided with a sand filling member (5) and a drilling member (6) respectively, the rotation adjustment member (4) is further provided with a rotation drive member (7) inside, the rotation drive member (7) is used in conjunction with the sand filling member (5) and the drilling member (6), and the detection bracket (2) is further provided with an acceleration component (8) used in conjunction with the rotation drive member (7), the acceleration component (8) is used in conjunction with the height adjustment member (3); The height adjustment member (3) comprises an electric telescopic rod (301), the electric telescopic rod (301) being fixedly mounted on the top of the detection bracket (2), the telescopic end of the electric telescopic rod (301) passing through the detection bracket (2) and being fixedly mounted with a push plate (302), and the front and rear sides of the bottom of the push plate (302) being fixedly mounted with a first vertical plate (303) and a second vertical plate (304) respectively; Two auxiliary rods (305) are fixedly mounted on the top of the push plate (302); the top ends of the two auxiliary rods (305) both penetrate the push plate (302) and are fixedly connected to a handle (306); The rotary adjustment member (4) comprises a stepper motor (401), the stepper motor (401) is fixedly mounted on the front side of the first vertical plate (303), and the output end of the stepper motor (401) passes through the first vertical plate (303) and is fixedly mounted with a rotary box (402); The bottom and top of the rotating box (402) are respectively penetrated by and fixedly mounted with a first docking tube (403) and a second docking tube (404); The drilling member (6) comprises a drill tube (601), the top of the drill tube (601) is fixedly connected to an assembly rod (602), one end of the assembly rod (602) passes through a first docking tube (403) and is fixedly connected to a first chuck (603) via a bolt, and the bottom of the first docking tube (403) is fixedly connected to the top of the drill tube (601); A first spline groove (604) is formed on the top of the assembly rod (602); A positioning hole (101) adapted to the outer circumference of the drill tube (601) is provided on the top of the base plate (1); A first weighing ring (405) is sleeved and fixedly installed on the outer circumference of the first docking tube (403); a plurality of guide rods (605) are penetrated and slidably installed on the top of the drill tube (601); the bottom ends of the plurality of guide rods (605) are commonly and fixedly connected to a metal tube (606); the outer circumference of the metal tube (606) is in sliding contact with the inner wall of the drill tube (601); the top end of the guide rod (605) is fixedly connected to a limit plate (607); a buffer spring (608) is sleeved on the outer circumference of the guide rod (605); and both ends of the buffer spring (608) are in contact with the limit plate (607) and the opposite side of the drill tube (601) respectively. A heating plate (609) is also embedded on the top of the drill tube (601); The sand filling component (5) comprises a sand filling cylinder (501), the sand filling cylinder (501) being fixedly mounted on the top of the second docking cylinder (404), and a second weighing ring (502) being fixedly connected to the bottom of the inner cavity of the sand filling cylinder (501).

2. A cement stabilized macadam base compaction detection device according to claim 1, characterized in that: The rotary drive member (7) comprises a servo motor (701), the output end of the servo motor (701) being fixedly connected to a spline shaft (702) via a coupling, the servo motor (701) being fixedly mounted to a back plate (703) via bolts, the back of the back plate (703) being fixedly connected to a rotating shaft (704), and the rear end of the rotating shaft (704) being fixedly connected to a square plate (705); The back of the rotating box (402) is provided with a long groove (4010) adapted to the rotating shaft (704); the surface of the second vertical plate (304) is provided with a square groove (307) adapted to the square plate (705); a reinforcing rod (706) is fixedly connected between the top and bottom of the inner cavity of the square groove (307), and the reinforcing rod (706) passes through the square plate (705); The spline shaft (702) is used in conjunction with the first spline groove (604).

3. A cement stabilized macadam base compaction detection device according to claim 2, characterized in that: The acceleration assembly (8) comprises a waist plate (801) and a U-shaped frame (802), wherein first toothed plates (803) are fixedly mounted on both sides of the U-shaped frame (802), and the waist plate (801) is rotatably mounted with two small gears (804) and two large gears (805), wherein the two large gears (805) are respectively meshed with the two small gears (804), and the two small gears (804) are respectively meshed with the two first toothed plates (803), and the second vertical plate (304) is fixedly connected with second toothed plates (803) on both sides of the back thereof via connecting rods. A tooth plate (806), and the two second tooth plates (806) are respectively used in conjunction with the two large gears (805); an L-shaped plate (807) is fixedly installed at the bottom of the waist plate (801); a vertical rod (808) is fixedly connected to the surface of the L-shaped plate (807); the top of the vertical rod (808) passes through the U-shaped frame (802); a first return spring (809) is sleeved on the outer periphery of the vertical rod (808); and two ends of the first return spring (809) are respectively fixedly connected to the bottom of the U-shaped frame (802) and the surface of the L-shaped plate (807); The waist plate (801) is fixedly mounted on the detection bracket (2), the U-shaped frame (802) is sleeved and fixedly mounted on both sides of the square plate (705), and the top end of the vertical rod (808) also penetrates the square plate (705) and extends to the top of the square plate (705).

4. A cement stabilized macadam base compaction detection device according to claim 3, characterized in that: A surrounding ring (503) and a plurality of blocking rods (504) are fixedly mounted on the top of the second weighing ring (502). The plurality of blocking rods (504) are arranged inside the surrounding ring (503), and the outer periphery of the surrounding ring (503) is in sliding contact with the inner wall of the sand filling cylinder (501). A blocking turntable (505) is commonly sleeved on the outer periphery of the plurality of blocking rods (504). The surrounding ring (503) is arranged below the blocking turntable (505). The bottom of the plugging turntable (505) is fixedly connected to a support rod (506) in sliding contact with the inside of the sand filling cylinder (501), the bottom end of the support rod (506) passes through the second weighing ring (502) and the sand filling cylinder (501) in sequence, and is fixedly connected to a spline column (507), and the outer periphery of the support rod (506) is also sleeved with a second return spring (508), and the two ends of the second return spring (508) are respectively fixedly connected to the side opposite to the sand filling cylinder (501) and the spline column (507); The sand filling cylinder (501) is also used in conjunction with the positioning hole (101).

5. A cement stabilized macadam base compaction detection device according to claim 4, characterized in that: The bottom of the inner cavity of the second docking tube (404) is clamped with a second chuck (407) via a plurality of auxiliary bolts (406); a sleeve rod (408) is fixedly installed inside the second chuck (407) via bolts; a second spline groove (409) matching the spline shaft (702) is formed at the bottom of the sleeve rod (408); and the second spline groove (409) is used in conjunction with the spline column (507); One side of the sand filling cylinder (501) is also connected to an inclined tube (509), the outer circumference of the inclined tube (509) is sleeved with a sealing cover (5010) threadedly mounted, and the surface of the surrounding ring (503) is provided with a docking port (5011) connected to the inclined tube (509).

6. A cement stabilized macadam base compaction detection device according to claim 5, characterized in that: The detection method of the cement stabilized crushed stone base compaction detection device specifically comprises the following steps: S1, using a hand-held handle (306), the base plate (1) is placed on the cement-stabilized gravel base to be tested, the positioning hole (101) is aligned with the sampling point, the electric telescopic rod (301) is started, the electric telescopic rod (301) is extended, and the push plate (302) is pushed to move the first vertical plate (303) and the second vertical plate (304) downward, the first vertical plate (303) drives the stepping motor (401) to move the rotating box (402) downward, and the rotating box (402) drives the first docking tube (403) to move the drill tube (601) downward; S2. During the downward movement of the drill tube (601), the servo motor (701) is controlled to drive the spline shaft (702) to rotate at a low speed. During the downward movement of the second vertical plate (304), the second tooth plate (806) is driven to move downward. When the second tooth plate (806) moves to mesh with the large gear (805), as the second tooth plate (806) continues to descend, the large gear (805) drives the small gear (804) to rotate faster, and the small gear (804) is driven to rotate faster. 4) driving the first tooth plate (803) to cause the U-shaped frame (802) to press the first return spring (809) downward, the U-shaped frame (802) drives the square plate (705) to cause the rotating shaft (704) to drive the back plate (703) to descend, and the back plate (703) drives the servo motor (701) to move downward, so that the spline shaft (702) is inserted into the first spline groove (604), until the first tooth plate (803) is no longer meshed with the pinion (804); At this time, the spline shaft (702) drives the assembly rod (602) to rotate the drill tube (601), and as the electric telescopic rod (301) continues to extend, the drill tube (601) passes through the positioning hole (101) to drill holes at the sampling points for sampling; S3, after completing the drilling sampling at the set depth, the servo motor (701) is turned off, the electric telescopic rod (301) is controlled to retract, and the electric telescopic rod (301) drives the push plate (302) to reset, so that the drill tube (601) drives the cement-stabilized crushed stone base sample to be tested to rise and leave the positioning hole (101), leaving a test pit at the sampling point; During the process, the second vertical plate (304) drives the second tooth plate (806) to rise, the second tooth plate (806) drives the large gear (805) to make the small gear (804) rotate in the opposite direction, the small gear (804) drives the first tooth plate (803) to make the U-shaped frame (802) rise, the U-shaped frame (802) drives the square plate (705) to make the rotating shaft (704) drive the back plate (703) to rise, the back plate (703) drives the servo motor (701) to move upward, so that the spline shaft (702) is separated from the first spline groove (604), and during the process, the first reset spring (809) is reset; S4, recording the weight A weighed by the second weighing ring (502) at this time, controlling the stepping motor (401) to rotate one-half of a circle, the stepping motor (401) drives the rotating box (402) to rotate, the rotating box (402) drives the first docking tube (403) and the second docking tube (404) to rotate, so that the opening of the sand filling tube (501) faces the positioning hole (101), and the drill tube (601) drives the sample of the cement-stabilized crushed stone base to be tested to move to the top of the rotating box (402), and the sample is dried: The sample of cement-stabilized crushed stone base to be tested is hit to scatter inside the metal cylinder (606). At this time, the metal cylinder (606) drives the guide rod (605) to make the limit plate (607) descend and fall on the first weighing ring (405). The weight at this time is weighed and recorded as the wet weight B of the sample. Then, the heating plate (609) is started. The heating plate (609) heats the metal cylinder (606). The metal cylinder (606) dries the sample of cement-stabilized crushed stone base to be tested. When the weight weighed on the first weighing ring (405) no longer changes, the weight at this time is recorded as the dry weight C of the sample. S5. During the sample drying process, the servo motor (701) is started to rotate at a low speed, and the electric telescopic rod (301) is controlled to extend, so that the spline shaft (702) is inserted into the second spline groove (409), and the sand filling tube (501) enters the positioning hole (101). During this process, the spline shaft (702) squeezes the spline column (507), and the spline column (507) squeezes the second return spring (508), and pushes the blocking turntable (505) down through the support rod (506), so that the blocking turntable (505) is separated from the blocking rod (504). At this time, the standard sand inside the sand filling tube (501) passes through the blocking turntable (505) and falls into the detection pit through the positioning hole (101). The process In the process, the servo motor (701) drives the spline shaft (702) to rotate the sleeve rod (408), the sleeve rod (408) drives the spline column (507) to rotate the support rod (506), the support rod (506) drives the plugging turntable (505) to rotate, and the standard sand is rotated and sprinkled into the detection pit. When the standard sand no longer falls, the servo motor (701) is turned off, the electric telescopic rod (301) is controlled to shrink, and the electric telescopic rod (301) drives the push plate (302) to reset, so that the sand filling tube (501) is separated from the positioning hole (101). During the process, the second reset spring (508) is reset, pushing the spline column (507) to pull the support rod (506) to reset the plugging turntable (505), and at this time, the standard sand no longer falls; After the sample drying process in S4 is completed, the stepper motor (401) is controlled to rotate one-half of a circle so that the opening of the sand filling tube (501) faces upward, and the weight D weighed by the second weighing ring (502) at this time is recorded to calculate the compaction degree of the current sampling point.

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