Sampling device for detecting compaction degree of highway base course

Abstract

The utility model discloses a highway base layer compactness detection sampling device, and relates to the technical field of highway construction detection, the highway base layer compactness detection sampling device comprises a bottom plate and vertical plates, the two vertical plates are fixedly arranged on the upper surface of the bottom plate, the upper ends of the two vertical plates are fixedly provided with a top plate, and the middle parts of the bottom plate and the top plate are respectively provided with a through groove; a hydraulic cylinder is fixedly arranged on the upper surface of the top plate, a push plate is fixedly arranged at the tail end of a piston rod of the hydraulic cylinder, a motor is fixedly arranged on the lower surface of the push plate, a connecting rod is fixedly connected to the output end of the motor, a wedge-shaped groove is formed in the side wall of the lower end of the connecting rod, and a sampling head abuts against the lower end of the connecting rod. A wedge-shaped block is fixedly arranged at the upper end of the sampling head, and the wedge-shaped block is clamped with the wedge-shaped groove; a limiting mechanism for limiting the front-back movement of the sampling head is arranged on the side wall of the connecting rod. According to the utility model, the sampling head can be efficiently and conveniently replaced, and continuous and repeated sampling work can be conveniently carried out.

Description

Technical Field

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

[0002] When a highway is being paved, it is necessary to take samples of the compaction of the highway base layer for testing. The testing structure can be used to determine whether the paving of the highway base layer is firm and whether it is in compliance with the current highway usage.

[0003] Among them, the announcement number CN203129119U discloses a highway base compaction detection sampling device, including a support plate, a support leg, a screw, a nut and a sampling barrel, which is characterized in that a nut is arranged at the center above the support plate, the screw passes through the nut and the support plate to connect with the sampling barrel, a rotating handle is arranged at the top of the screw, a support leg is arranged below the support plate, and a circular stabilizing plate is arranged below the support leg. There are still defects in this technical solution:

[0004] In this technical solution, the sampling barrel is fixedly connected to the screw rod, so it is inconvenient to disassemble the sampling barrel. When continuous sampling is required, the sample in the sampling barrel needs to be taken out first, which is very cumbersome, time-consuming and labor-intensive, affecting the efficiency of the sampling work. Utility Model Content

[0005] In view of the problems existing in the existing highway base compaction detection sampling device mentioned above, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a highway base compaction detection sampling device, which solves the problem that the sampling cylinder and the screw are fixedly connected in the highway base compaction detection sampling device in the prior art, making it inconvenient to disassemble the sampling cylinder. When continuous multiple samplings are required, the samples in the sampling cylinder need to be taken out first, which is very cumbersome, time-consuming and labor-intensive, and affects the efficiency of the sampling work.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A road base compaction detection sampling device comprises a bottom plate and a vertical plate, wherein two vertical plates are fixedly arranged on the upper surface of the bottom plate, a top plate is fixedly arranged on the upper ends of the two vertical plates, and a through groove is opened in the middle of the bottom plate and the top plate;

[0009] A hydraulic cylinder is fixedly arranged on the upper surface of the top plate, a push plate is fixedly arranged at the end of the piston rod of the hydraulic cylinder, a motor is fixedly arranged on the lower surface of the push plate, a connecting rod is fixedly connected to the output end of the motor, a wedge-shaped groove is provided on the lower end side wall of the connecting rod, a sampling head is abutted against the lower end of the connecting rod, a wedge-shaped block is fixedly arranged on the upper end of the sampling head, and the wedge-shaped block is clamped with the wedge-shaped groove;

[0010] The side wall of the connecting rod is provided with a limiting mechanism for limiting the forward and backward movement of the sampling head.

[0011] Preferably, the limiting mechanism includes a fixed ring and a movable ring, the fixed ring is fixedly sleeved on the outer wall of the connecting rod, the movable ring is movably sleeved on the outer wall of the connecting ring, connecting blocks are fixedly provided on both sides of the movable ring, sliding rods are movably sleeved inside both ends of the fixed ring, the lower end of the sliding rod is fixedly connected to the connecting block, a spring is movably sleeved on the rod wall of the sliding rod, and the two ends of the spring are respectively fixedly connected to the corresponding connecting block and the fixed ring, and the movable ring is in conflict with the upper surface of the sampling head.

[0012] Preferably, the lower surface of the sampling head is serrated, so that it can be inserted into the ground more smoothly.

[0013] Preferably, universal wheels with foot brakes are provided on both sides of the lower surface of the base plate to facilitate moving and fixing the equipment.

[0014] Preferably, limiting rods are fixedly provided on both sides of the upper surface of the push plate, and through holes are opened on the upper surface of the top plate and on both sides of the hydraulic cylinder. The upper ends of the two limiting rods pass through the corresponding through holes, which can limit the push plate so that the push plate can slide stably.

[0015] Preferably, the outer wall of the movable ring is provided with anti-slip textures to increase the friction between the hand and the movable ring and prevent slipping when pulling.

[0016] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0017] 1. The utility model drives the sampling head to rotate by a motor, and at the same time the piston rod of the hydraulic cylinder extends to move the sampling head downward, so that the sampling head rotates into the inside of the road, and then the piston rod of the hydraulic cylinder contracts to drive the sampling head to reset, so that the sampling work can be realized.

[0018] 2. In the utility model, the movable ring is pulled upward to move away from the outer side of the wedge-shaped groove, thereby releasing the limit on the wedge-shaped block, and the wedge-shaped block is pulled forward and out of the wedge-shaped groove, thereby completing the disassembly of the sampling head.

[0019] 3. The utility model inserts the wedge-shaped block on the top of the new sampling head into the wedge-shaped groove, then loosens the movable ring, and the spring force pushes the movable block downward, so that the movable ring cover is arranged on the outside of the wedge-shaped groove, and the wedge-shaped block is limited, thus completing the installation of the new sampling head. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the structure of a highway base compaction detection sampling device proposed by the utility model;

[0022] Figure 2 for Figure 1 A schematic diagram of the structure of the middle part A is enlarged;

[0023] Figure 3 for Figure 2 A three-dimensional view of the middle connecting rod.

[0024] Description of reference numerals:

[0025] 1. Bottom plate; 2. Vertical plate; 3. Top plate; 4. Hydraulic cylinder; 5. Push plate; 6. Limit rod; 7. Motor; 8. Sampling head; 9. Connecting rod; 10. Wedge block; 11. Universal wheel; 12. Fixed ring; 13. Movable ring; 14. Connecting block; 15. Sliding rod; 16. Spring. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] The utility model embodiment discloses a highway base compaction detection sampling device.

[0028] Reference Figure 1-3 A road base compaction detection sampling device comprises a bottom plate 1 and a vertical plate 2, wherein the two vertical plates 2 are fixedly arranged on the upper surface of the bottom plate 1, and a top plate 3 is fixedly arranged on the upper ends of the two vertical plates 2, through grooves are provided in the middle of the bottom plate 1 and the top plate 3, and universal wheels 11 with foot brakes are provided on both sides of the lower surface of the bottom plate 1 to facilitate the movement and fixing of the equipment;

[0029] A hydraulic cylinder 4 is fixedly arranged on the upper surface of the top plate 3, a push plate 5 is fixedly arranged at the end of the piston rod of the hydraulic cylinder 4, a motor 7 is fixedly arranged on the lower surface of the push plate 5, a connecting rod 9 is fixedly connected to the output end of the motor 7, a wedge-shaped groove is provided on the lower end side wall of the connecting rod 9, a sampling head 8 is abutted against the lower end of the connecting rod 9, the lower surface of the sampling head 8 is serrated, so that the sampling head 8 can smoothly enter the ground, a wedge-shaped block 10 is fixedly arranged on the upper end of the sampling head 8, and the wedge-shaped block 10 is clamped with the wedge-shaped groove;

[0030] The motor 7 drives the sampling head 8 to rotate, and at the same time the piston rod of the hydraulic cylinder 4 extends, so that the sampling head 8 moves downward, so that the sampling head 8 rotates into the inside of the road, and then the piston rod of the hydraulic cylinder 4 contracts, driving the sampling head 8 to reset, that is, the sampling work can be realized.

[0031] In order to facilitate the limiting and releasing of the wedge block 10, refer to Figure 1-3 The side wall of the connecting rod 9 is provided with a limiting mechanism for limiting the forward and backward movement of the sampling head 8. The limiting mechanism includes a fixed ring 12 and a movable ring 13. The fixed ring 12 is fixedly sleeved on the outer wall of the connecting rod 9, and the movable ring 13 is movably sleeved on the outer wall of the connecting ring. Connecting blocks 14 are fixedly provided on both sides of the movable ring 13. Slide rods 15 are movably sleeved inside both ends of the fixed ring 12. The lower end of the slide rod 15 is fixedly connected to the connecting block 14. The rod wall of the slide rod 15 is movably sleeved with a spring 16. The two ends of the spring 16 are respectively fixedly connected to the corresponding connecting block 14 and the fixed ring 12. The movable ring 13 conflicts with the upper surface of the sampling head 8. The outer wall of the movable ring 13 is provided with anti-slip textures to increase the friction between the hand and the movable ring 13 and try to prevent slipping during pulling;

[0032] Pull up the movable ring 13 to move it away from the outside of the wedge-shaped groove, that is, release the limit on the wedge block 10, pull the wedge block 10 forward and pull it out of the wedge-shaped groove, and complete the disassembly of the sampling head 8. Insert the wedge block 10 on the top of the new sampling head 8 into the wedge-shaped groove, and then release the movable ring 13. The elastic force of the spring 16 pushes the movable block 13 downward, so that the movable ring 13 covers the outside of the wedge-shaped groove, limits the wedge block 10, and completes the installation of the new sampling head 8.

[0033] In order to enable the push plate 5 to move stably, refer to Figure 1-3 Limit rods 6 are fixedly arranged on both sides of the upper surface of the push plate 5, and through holes are opened on the upper surface of the top plate 3 and on both sides of the hydraulic cylinder 4. The upper ends of the two limit rods 6 pass through the corresponding through holes, which can limit the push plate 5 so that the push plate 5 can move stably.

[0034] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A road base compaction detection sampling device, comprising a bottom plate (1) and a vertical plate (2), characterized in that: The two vertical plates (2) are fixedly arranged on the upper surface of the bottom plate (1), the top plate (3) is fixedly arranged on the upper ends of the two vertical plates (2), and the middle parts of the bottom plate (1) and the top plate (3) are both provided with through grooves; A hydraulic cylinder (4) is fixedly arranged on the upper surface of the top plate (3), a push plate (5) is fixedly arranged at the end of the piston rod of the hydraulic cylinder (4), a motor (7) is fixedly arranged on the lower surface of the push plate (5), a connecting rod (9) is fixedly connected to the output end of the motor (7), a wedge-shaped groove is provided on the lower end side wall of the connecting rod (9), a sampling head (8) is abutted against the lower end of the connecting rod (9), a wedge-shaped block (10) is fixedly arranged on the upper end of the sampling head (8), and the wedge-shaped block (10) is clamped in the wedge-shaped groove; The side wall of the connecting rod (9) is provided with a limiting mechanism for limiting the forward and backward movement of the sampling head (8).

2. The highway base compaction detection sampling device according to claim 1 is characterized in that: The limiting mechanism comprises a fixed ring (12) and a movable ring (13), wherein the fixed ring (12) is fixedly sleeved on the outer wall of the connecting rod (9), and the movable ring (13) is movably sleeved on the outer wall of the connecting ring. Connecting blocks (14) are fixedly arranged on both sides of the movable ring (13), and sliding rods (15) are movably sleeved inside both ends of the fixed ring (12), and the lower end of the sliding rod (15) is fixedly connected to the connecting block (14), and the rod wall of the sliding rod (15) is movably sleeved with a spring (16), and the two ends of the spring (16) are respectively fixedly connected to the corresponding connecting block (14) and the fixed ring (12), and the movable ring (13) is in conflict with the upper surface of the sampling head (8).

3. The highway base compaction detection sampling device according to claim 1 is characterized in that: The lower surface of the sampling head (8) is sawtooth-shaped.

4. The highway base compaction detection sampling device according to claim 1 is characterized in that: Universal wheels (11) with foot brakes are arranged on both sides of the lower surface of the base plate (1).

5. The highway base compaction detection sampling device according to claim 1 is characterized in that: Limit rods (6) are fixedly arranged on both sides of the upper surface of the push plate (5), and through holes are opened on the upper surface of the top plate (3) and on both sides of the hydraulic cylinder (4), and the upper ends of the two limit rods (6) pass through the corresponding through holes.

6. The highway base compaction detection sampling device according to claim 2 is characterized in that: The outer wall of the movable ring (13) is provided with anti-slip patterns.

Images