Sampling device for detecting compaction degree of highway base course

Abstract

The utility model discloses a highway base layer compactness detection sampling device, which relates to the field of road construction and comprises a drill cylinder, a first cavity and a second cavity are arranged in the cylinder wall of the drill cylinder, a sleeve is sleeved on the top of the drill cylinder in a sliding manner, the cylinder wall of the sleeve is positioned in the first cavity, and a plurality of elastic steel sheets which are circumferentially distributed at equal intervals are fixedly connected to the bottom of the sleeve. The elastic steel sheet extends into the second cavity, a push-pull mechanism used for driving the sleeve to move relative to the drilling barrel is arranged on the bearing plate, and a squeezing and pushing mechanism used for pushing out a sample in the drilling barrel is installed on the push-pull mechanism. After the drilling barrel completes soil drilling and sampling, the push-pull mechanism drives the sleeve to move downwards, the sleeve drives the elastic steel sheets to move downwards, and the elastic steel sheets are extruded and bent and then seal the bottom end of the drilling barrel, so that a sample is prevented from falling off in the upward moving process of the drilling barrel, and the integrity of the sample is ensured; the sample in the drill cylinder is pushed out through the extruding and pushing mechanism, the drill cylinder does not need to be opened manually, operation is more convenient, and the possibility that the sample is broken is reduced.

Description

Technical Field

[0001] The utility model relates to the field of road construction, in particular to a highway base compaction detection sampling device. Background Art

[0002] The compaction quality of the highway base is one of the important indicators of road construction quality. Only by fully compacting the roadbed and pavement structure layer can the strength, rigidity, stability and flatness of the roadbed and pavement be guaranteed, thereby extending the service life of the roadbed and pavement. When paving a highway, it is necessary to sample and test the compaction of the highway base to determine whether the paving of the highway base is firm and whether it meets the current highway usage conditions.

[0003] In the prior art, sampling is basically performed by drilling into the roadbed with a drill tube, which is composed of two semi-cylinders. After sampling, the staff needs to disassemble the drill tube and then open the drill tube to take out the sample. Since the disassembly and assembly of the drill tube is troublesome, the sampling efficiency is low. The patent document with announcement number CN220394489U discloses a highway base compaction detection sampling device. When taking materials, the control key is manually controlled to make the forward and reverse screws drive. In this state, the screw sleeves on both sides of the periphery will carry the respective sampling half-cylinders below to cooperate with the upper sliding rod to operate relatively away, so that the samples inside the two sampling half-cylinders will fall naturally by gravity in an unrestrained state, which is more portable than manual material taking.

[0004] However, when the drill barrel drives the sample upward, due to the opening at the bottom of the drill barrel, part of the bottom of the sample may fall out, especially for samples with low compaction. The sample is not well formed in the drill barrel, resulting in incomplete sampling. After the drill barrel is separated into two halves, the free fall of the sample may cause the sample to break, affecting the integrity of the sample and being unfavorable to the test results. Utility Model Content

[0005] The purpose of the utility model is to provide a highway base compaction detection sampling device in order to solve the above problems.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0007] A highway base compaction detection sampling device comprises a base, a first U-shaped frame is fixed on the top of the base, a bearing plate is slidably connected between two side walls of the first U-shaped frame, a drill barrel is rotatably connected to the front end of the bearing plate, a lifting mechanism for driving the bearing plate to move up and down is arranged on the first U-shaped frame, a power mechanism for driving the drill barrel to rotate is arranged on the bearing plate, a first cavity and a second cavity are opened in the barrel wall of the drill barrel, the first cavity is located above the second cavity and are connected to each other, the top end opening of the first cavity is located at the top of the drill barrel, the bottom end opening of the second cavity is located on the inner wall of the drill barrel, the second cavity forms an arc bend in the barrel wall of the drill barrel, a sleeve is slidably sleeved on the top of the drill barrel, the barrel wall of the sleeve is located in the first cavity, a plurality of elastic steel sheets equidistantly distributed around the circumference are fixedly connected to the bottom of the sleeve, the elastic steel sheets extend into the second cavity, a push-pull mechanism for driving the sleeve to move relative to the drill barrel is arranged on the bearing plate, and a squeezing mechanism for pushing out the sample in the drill barrel is installed on the push-pull mechanism.

[0008] Preferably, the push-pull mechanism includes a third U-shaped frame, the third U-shaped frame is fixedly connected to the top of the bearing plate, the top of the third U-shaped frame is fixedly connected to a hydraulic cylinder, the output shaft of the hydraulic cylinder is fixedly connected to a push-pull plate, and the push-pull plate is fixedly connected to the rear side of the sleeve.

[0009] Preferably, the squeezing and pushing mechanism includes a fourth U-shaped frame, the fourth U-shaped frame is fixedly connected to the top of the third U-shaped frame, a squeezing and pushing motor is fixedly connected to the top of the fourth U-shaped frame, the output shaft of the squeezing and pushing motor is fixedly connected to the second screw rod, the outside of the second screw rod is connected to a sleeve by a thread, the sleeve passes through the third U-shaped frame and the top wall of the sleeve, the bottom end of the sleeve extends into the interior of the drill barrel and is fixedly connected to a push plate, the push plate is fitted with the inner wall of the drill barrel, the sleeve is slidably connected to the third U-shaped frame, and the sleeve and the top wall of the drill barrel are both provided with through holes for the sleeve to pass through.

[0010] Preferably, the lifting mechanism includes a lifting motor, which is fixedly connected to the top of the first U-shaped frame. The output shaft of the lifting motor is fixedly connected to the first screw rod, which passes through the supporting plate. The bottom end of the first screw rod is rotatably connected to the base. The top of the supporting plate is fixedly connected to a connecting block, which is threadedly connected to the first screw rod.

[0011] Preferably, the power mechanism includes a second U-shaped frame, the second U-shaped frame is fixedly connected to the rear end of the top of the supporting plate, the top of the second U-shaped frame is fixedly connected to a power motor, the output shaft of the power motor is fixedly connected to a driving pulley, the driving pulley is connected to a driven pulley through a belt, and the driven pulley is fixedly connected to the drill barrel.

[0012] Preferably, a roller is installed at the bottom of the base, and a handle is installed at the rear end of the top of the base.

[0013] The beneficial effect is that when the drill barrel completes drilling and sampling, the push-pull mechanism drives the sleeve to move downward, and the sleeve drives the elastic steel sheet to move downward. Multiple elastic steel sheets are squeezed and bent and then the bottom end of the drill barrel is closed, thereby preventing the sample from falling during the upward movement of the drill barrel and ensuring the integrity of the sample; the sample in the drill barrel is pushed out by the squeezing and pushing mechanism, and the drill barrel does not need to be opened manually, which is more convenient to operate and reduces the possibility of sample breakage.

[0014] The additional technical features and advantages of the present invention will be more clearly explained in the following description, or can be understood through the specific practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0016] Figure 1 It is a stereoscopic diagram of a highway base compaction detection sampling device described in the utility model;

[0017] Figure 2 It is a left view of a highway base compaction detection sampling device described in the utility model;

[0018] Figure 3 It is a three-dimensional diagram of the lifting mechanism of a highway base compaction detection sampling device described in the utility model;

[0019] Figure 4 It is a three-dimensional diagram of the power mechanism of a highway base compaction detection sampling device described in the utility model;

[0020] Figure 5 It is a stereoscopic diagram of a squeezing and pushing mechanism of a highway base compaction detection and sampling device described in the utility model;

[0021] Figure 6 It is a left view of the push-pull mechanism of a highway base compaction detection sampling device described in the utility model;

[0022] Figure 7 It is a front side cross-sectional view of a drill tube and a casing of a highway base compaction detection and sampling device described in the utility model;

[0023] Figure 8 The utility model is a highway base compaction detection sampling device Figure 7 A magnified view of the structure at center;

[0024] Fig. 9 It is a top view of the closed state of the elastic steel sheet of the highway base compaction detection sampling device described in the utility model.

[0025] The accompanying drawings are marked as follows: 1. base; 101. roller; 102. handle; 2. first U-shaped frame; 3. bearing plate; 4. drill tube; 401. first cavity; 402. second cavity; 403. sleeve; 404. elastic steel sheet; 5. lifting mechanism; 501. lifting motor; 502. first screw rod; 503. connecting block; 6. power mechanism; 601. second U-shaped frame; 602. power motor; 603. driving pulley; 604. driven pulley; 7. push-pull mechanism; 701. third U-shaped frame; 702. hydraulic cylinder; 703. push-pull plate; 8. squeezing and pushing mechanism; 801. fourth U-shaped frame; 802. squeezing and pushing motor; 803. second screw rod; 804. sleeve; 805. push plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0028] The utility model is further described below in conjunction with the accompanying drawings:

[0029] like Figure 1-Figure 9 As shown, a highway base compaction detection sampling device includes a base 1, a roller 101 is installed at the bottom of the base 1 to facilitate the movement of the sampling device, a handle 102 is installed at the top rear end of the base 1, a first U-shaped frame 2 is connected to the top of the base 1 by screws, and a bearing plate 3 is slidably connected between the two side walls of the first U-shaped frame 2. Specifically, protruding blocks are arranged on both sides of the bearing plate 3, and sliding grooves are opened on the two inner side walls of the first U-shaped frame 2. The protruding blocks are slidably fitted in the sliding grooves, which play a limiting and guiding role in the up and down movement of the bearing plate 3. A drill barrel 4 is rotatably connected to the front end of the bearing plate 3, and a lifting mechanism 5 for driving the bearing plate 3 to move up and down is arranged on the first U-shaped frame 2. When the bearing plate 3 moves up and down, it will drive the drill barrel 4 to move up and down, and a power mechanism 6 for driving the drill barrel 4 to rotate is arranged on the bearing plate 3.

[0030] A first cavity 401 and a second cavity 402 are provided in the wall of the drill tube 4. The first cavity 401 is located above the second cavity 402 and are interconnected. The top opening of the first cavity 401 is located at the top of the drill tube 4, and the bottom opening of the second cavity 402 is located on the inner wall of the drill tube 4. The second cavity 402 forms an arc in the wall of the drill tube 4. A sleeve 403 is slidably sleeved on the top of the drill tube 4. The drill tube 4 and the sleeve 403 can rotate and move axially relative to each other. The wall of the sleeve 403 is located in the first cavity 401. A plurality of elastic steel sheets 404 equidistantly distributed around the circumference are fixedly connected to the bottom of the sleeve 403. The elastic steel sheets 404 extend into the second cavity 401. 2, when the sleeve 403 moves downward relative to the drill tube 4, the sleeve 403 drives the elastic steel sheet 404 to move. Under the guiding action of the second cavity 402, the elastic steel sheet 404 is squeezed and bent and extends into the drill tube 4. Multiple elastic steel sheets 404 are finally closed to seal the bottom of the drill tube 4, so that the sample in the drill tube 4 can be prevented from falling, and the elastic steel sheet 404 can cut the bottom of the sample flat, which is beneficial to the subsequent use of the sample and can better ensure the integrity of the sample. A push-pull mechanism 7 for driving the sleeve 403 to move relative to the drill tube 4 is provided on the bearing plate 3, and a squeezing mechanism 8 for pushing the sample out of the drill tube 4 is installed on the push-pull mechanism 7.

[0031] The push-pull mechanism 7 includes a third U-shaped frame 701, which is connected to the top of the bearing plate 3 by bolts. A hydraulic cylinder 702 is connected to the top of the third U-shaped frame 701 by bolts. The output shaft of the hydraulic cylinder 702 is fixedly connected to a push-pull plate 703. The push-pull plate 703 is fixedly connected to the rear side of the sleeve 403. The push-pull plate 703 drives the sleeve 403 to move up and down by the extension and retraction of the hydraulic cylinder 702.

[0032] The squeezing and pushing mechanism 8 includes a fourth U-shaped frame 801, which is connected to the top of the third U-shaped frame 701 by bolts, and a squeezing and pushing motor 802 is connected to the top of the fourth U-shaped frame 801 by bolts, and the output shaft of the squeezing and pushing motor 802 is fixedly connected to the second screw rod 803, and the second screw rod 803 is externally connected to a sleeve 804 by a thread, and the sleeve 804 passes through the third U-shaped frame 701 and the top wall of the sleeve 403, and the bottom end of the sleeve 804 extends into the interior of the drill tube 4 and is fixedly connected to a push plate 805, and the push plate 805 is fitted with the inner wall of the drill tube 4, and the sleeve 804 is slidably connected to the third U-shaped frame 701. Specifically, a convex strip is fixedly connected to the outer wall of the sleeve 804, and the sleeve 804 uses the convex strip to slide with the third U-shaped frame 701, so that the sleeve 804 can only move up and down, and the sleeve 403 and the top wall of the drill tube 4 are both provided with through holes for the sleeve 804 to pass through.

[0033] The lifting mechanism 5 includes a lifting motor 501, which is connected to the top of the first U-shaped frame 2 by bolts. The output shaft of the lifting motor 501 is fixedly connected to the first screw rod 502, which passes through the supporting plate 3. The bottom end of the first screw rod 502 is rotatably connected to the base 1, and the top of the supporting plate 3 is fixedly connected to a connecting block 503, which is threadedly connected to the first screw rod 502.

[0034] The power mechanism 6 includes a second U-shaped frame 601, which is connected to the top rear end of the supporting plate 3 by bolts, and the top of the second U-shaped frame 601 is connected to a power motor 602 by bolts, and the output shaft of the power motor 602 is fixedly connected to a driving pulley 603, and the driving pulley 603 is connected to a driven pulley 604 by a belt, and the driven pulley 604 is fixedly connected to the drill barrel 4.

[0035] Working principle: When in use, the power motor 602 drives the active pulley 603 and the driven pulley 604 to rotate, and the driven pulley 604 drives the drill barrel 4 to rotate, and the lifting motor 501 drives the first screw rod 502 to rotate, and the first screw rod 502 drives the connecting block 503 to move downward, and the connecting block 503 drives the supporting plate 3 to move downward, and the supporting plate 3 drives the drill barrel 4 to move downward for drilling soil sampling. When the sampling is completed, the rotation of the drill barrel 4 is stopped, and then the hydraulic cylinder 702 drives the sleeve 403 to move downward through the push-pull plate 703, and the sleeve 403 drives the elastic steel sheet 404 to move downward relative to the drill barrel 4. Under the guiding action of the second cavity 402, the elastic steel sheet 404 bends and extends into the inside of the drill barrel 4. After multiple elastic steel sheets 404 are closed, the bottom end of the drill barrel 4 is closed, thereby preventing the sample from falling, and then the lifting motor 501 is reversed to make the supporting plate 3 drive the drill barrel 4 to move upward.

[0036] When it is necessary to take out the sample in the drill barrel 4, the staff prepares to receive the sample at the bottom of the drill barrel 4, and then moves the sleeve 403 upward relative to the drill barrel 4, the elastic steel sheet 404 re-enters the second cavity 402, the bottom end of the drill barrel 4 is opened, and the second screw rod 803 is driven to rotate by the squeezing and pushing motor 802, the second screw rod 803 drives the sleeve 804 to move downward, the sleeve 804 drives the push plate 805 to move downward, and the push plate 805 pushes the sample in the drill barrel 4 out.

[0037] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A road base compaction detection sampling device, comprising a base (1), characterized in that: A first U-shaped frame (2) is fixed on the top of the base (1); a bearing plate (3) is slidably connected between two side walls of the first U-shaped frame (2); a drill tube (4) is rotatably connected to the front end of the bearing plate (3); a lifting mechanism (5) for driving the bearing plate (3) to move up and down is provided on the first U-shaped frame (2); a power mechanism (6) for driving the drill tube (4) to rotate is provided on the bearing plate (3); a first cavity (401) and a second cavity (402) are provided in the wall of the drill tube (4); the first cavity (401) is located above the second cavity (402) and is connected to each other; a top opening of the first cavity (401) is located at the top of the drill tube (4); and a second cavity (402) is provided in the wall of the drill tube (4); 02) has a bottom opening located on the inner wall of the drill barrel (4), the second cavity (402) forms an arc-shaped bend in the wall of the drill barrel (4), a sleeve (403) is slidably sleeved on the top of the drill barrel (4), the wall of the sleeve (403) is located in the first cavity (401), a plurality of elastic steel sheets (404) equidistantly distributed in a circle are fixedly connected to the bottom of the sleeve (403), the elastic steel sheets (404) extend into the second cavity (402), a push-pull mechanism (7) for driving the sleeve (403) to move relative to the drill barrel (4) is provided on the bearing plate (3), and a squeezing mechanism (8) for pushing out the sample in the drill barrel (4) is installed on the push-pull mechanism (7).

2. A highway base compaction detection sampling device according to claim 1, characterized in that: The push-pull mechanism (7) comprises a third U-shaped frame (701), the third U-shaped frame (701) is fixedly connected to the top of the bearing plate (3), a hydraulic cylinder (702) is fixedly connected to the top of the third U-shaped frame (701), an output shaft of the hydraulic cylinder (702) is fixedly connected to a push-pull plate (703), and the push-pull plate (703) is fixedly connected to the rear side of the sleeve (403).

3. A highway base compaction detection sampling device according to claim 2, characterized in that: The squeezing and pushing mechanism (8) comprises a fourth U-shaped frame (801), the fourth U-shaped frame (801) is fixedly connected to the top of the third U-shaped frame (701), a squeezing and pushing motor (802) is fixedly connected to the top of the fourth U-shaped frame (801), the output shaft of the squeezing and pushing motor (802) is fixedly connected to a second screw rod (803), the second screw rod (803) is externally connected to a sleeve (804) by a thread, the sleeve (804) passes through the third U-shaped frame (701) and the top wall of the sleeve (403), the bottom end of the sleeve (804) extends into the interior of the drill tube (4) and is fixedly connected to a push plate (805), the push plate (805) is in contact with the inner wall of the drill tube (4), the sleeve (804) is slidably connected to the third U-shaped frame (701), and the top walls of the sleeve (403) and the drill tube (4) are both provided with through holes for the sleeve (804) to pass through.

4. A highway base compaction detection sampling device according to claim 1, characterized in that: The lifting mechanism (5) comprises a lifting motor (501), the lifting motor (501) is fixedly connected to the top of the first U-shaped frame (2), the output shaft of the lifting motor (501) is fixedly connected to a first screw rod (502), the first screw rod (502) passes through the bearing plate (3), the bottom end of the first screw rod (502) is rotatably connected to the base (1), the top of the bearing plate (3) is fixedly connected to a connecting block (503), and the connecting block (503) is threadedly connected to the first screw rod (502).

5. A highway base compaction detection sampling device according to claim 1, characterized in that: The power mechanism (6) comprises a second U-shaped frame (601), the second U-shaped frame (601) being fixedly connected to the top rear end of the bearing plate (3), a power motor (602) being fixedly connected to the top of the second U-shaped frame (601), an output shaft of the power motor (602) being fixedly connected to a driving pulley (603), the driving pulley (603) being connected to a driven pulley (604) via a belt, and the driven pulley (604) being fixedly connected to the drill tube (4).

6. A highway base compaction detection sampling device according to claim 1, characterized in that: A roller (101) is installed at the bottom of the base (1), and a handle (102) is installed at the rear end of the top of the base (1).

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