A sampling device for detecting compaction of highway roadbed and pavement

Abstract

The invention discloses a sampling device for detecting the compaction degree of a highway roadbed and pavement, and relates to the technical field of sampling for roadbed detection, comprising a sampling vehicle, a cylinder being fixedly mounted on the top of the sampling vehicle, a hydraulic column being fixedly mounted on the surface of the sampling vehicle, a hydraulic rod being fixedly mounted on the surface of the hydraulic column, a support plate being fixedly mounted on the surface of the sampling vehicle, a rotating motor being fixedly mounted on the bottom of the output end of the hydraulic rod, a drill bit slidingly penetrating the inner and outer walls of the support plate, an output end of the rotating motor being fixedly mounted on the top of the drill bit, a hollow box being fixedly mounted on the top of the support plate, and a telescopic rod being fixedly mounted on the top of the support plate, and after the arc plate moves, a reset spring is used to reset the free end of the telescopic rod to move toward the top, so as to prevent the drill bit from being knocked against by rapid contraction, causing the internal sample to fall off and making it impossible to complete the sampling.

Description

Technical Field

[0001] The invention relates to the technical field of roadbed detection sampling, in particular to a sampling device for detecting the compactness of a highway roadbed and pavement. Background Art

[0002] The compaction test of highway subgrade and pavement is an important part of ensuring road quality. Usually, compaction test is achieved through sampling. The sampling device needs to be able to effectively obtain representative samples from the subgrade or pavement for subsequent laboratory or field testing.

[0003] The patent with patent announcement number CN216999636U relates to a sampling device for detecting the compaction degree of highway roadbed and pavement, including a base plate, the four corners of the bottom of the base plate are fixedly connected to universal wheels, the top of the base plate is fixedly installed with a support frame, the top of the support frame is fixedly connected with a first electric cylinder, the first electric cylinder passes through the top of the support frame, and the movable end of the first electric cylinder is fixedly connected with a mounting box in the support frame, the annular plate is pushed by the second electric cylinder, and the wear-resistant pad at the bottom of the annular plate fits tightly with the ground to prevent the device from moving when in use, the movable end of the first electric cylinder pushes the mounting box to move, the motor in the mounting box drives the sampling tube to rotate, the rotating sampling tube samples the highway roadbed and pavement, the water pump transports water in the water tank to the annular tube, the water outlet of the annular tube sprays out, dust is reduced during sampling, and a protective cover is set to cover the sampling point, and the dust and the mixture of water and ash are covered to prevent the dust and the mixture from scattering.

[0004] In the above patent, water is sprayed out through the outlet of the annular tube to reduce dust during sampling, and a protective cover is set on the sampling site to cover the dust and the mixture of water and ash to prevent the dust and the mixture from scattering. However, after the drill bit completes the sampling, a bump may occur when taking out the sample, which may cause the sample to fall and become unable to be taken out, affecting the detection progress. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a sampling device for detecting the compaction degree of a highway roadbed and pavement, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A sampling device for detecting the compaction degree of a highway roadbed and pavement, comprising a sampling vehicle, a cylinder is fixedly installed on the top of the sampling vehicle, a hydraulic column is fixedly installed on the surface of the sampling vehicle, a hydraulic rod is fixedly installed on the surface of the hydraulic column, and a protective device, a sample collecting device and a supporting device are arranged on the top of the sampling vehicle;

[0007] The protective device includes: a support plate, a rotating motor, a drill bit, a hollow box, a telescopic rod, a flat plate, a limit plate, a sliding block, an arc plate, a No. 1 spring, a top plate and an arc block. The support plate is fixedly mounted on the surface of the sampling vehicle, the rotating motor is fixedly mounted on the bottom of the output end of the hydraulic rod, the drill bit slides through the inner and outer walls of the support plate, the output end of the rotating motor is fixedly mounted on the top of the drill bit, the hollow box is fixedly mounted on the top of the support plate, the telescopic rod is fixedly mounted on the top of the support plate, the flat plate is fixedly mounted on the top of the free end of the telescopic rod, and the limit plate is fixedly mounted At the top of the flat plate, the sliding block is slidably installed on the inner wall of the hollow box, the curved plate is fixedly installed between the sliding blocks, the No. 1 spring is arranged between the curved plate and the hollow box, the top plate is fixedly installed on the top of the hollow box, a square hole is provided on the surface of the hollow box, the curved surface block is fixedly installed on the circumferential surface of the drill bit, and after the curved plate moves, it is reset by the reset spring to drive the free end of the telescopic rod to move toward the top, the free end of the telescopic rod moving toward the top will drive the flat plate to move toward the top, the movement of the flat plate will drive the limit plate to move toward the top, and the limit plate will re-limit the curved plate after moving toward the top.

[0008] According to the above technical solution, a reset spring is arranged inside the telescopic rod, the arc-shaped plate contacts the drill bit, and the free end of the telescopic rod is reset by the reset spring.

[0009] According to the above technical solution, the limiting plate is in contact with the arc plate, the arc surface block is in contact with the limiting plate, and the arc plate is limited by the limiting plate.

[0010] According to the above technical scheme, the sample collecting device includes: a screw, a sliding groove, a spiral groove, a collar, a tray, a square block, a slider, a transmission block and a U-shaped rod. The screw slides through the inner and outer walls of the support plate, the screw is fixedly installed at the bottom of the plate, the sliding groove is arranged on the circumferential surface of the screw, the spiral groove is arranged on the circumferential surface of the screw, the collar is slidably installed on the inner walls of the spiral groove and the sliding groove, the tray is fixedly installed on the circumferential surface of the collar, the square block is fixedly installed on the bottom of the support plate, the slider is slidably installed on the inner wall of the square block, the transmission block is fixedly installed on the surface of the slider, and the U-shaped rod is fixedly installed on the bottom of the slider. The rotation of the tray will drive the transmission block to move to the top, the movement of the transmission block to the top will drive the slider to move to the top, the movement of the slider to the top will drive the U-shaped rod to move to the top, and the U-shaped rod will contact the tray after moving to the top.

[0011] According to the above technical solution, a No. 2 spring is arranged between the slider and the square block, the U-shaped rod is in contact with the bottom of the tray, and the slider is driven to reset by the No. 2 spring.

[0012] According to the above technical scheme, the supporting device includes: a storage box, a sliding rod, a splint, a limit block, a seesaw, a circular block, a cross plate and an adjusting block, the storage box is fixedly mounted on the surface of the supporting plate, the sliding rod is slidably mounted on the inner wall of the storage box, the surfaces of the storage box and the sliding rod are provided with limit holes, the splint is fixedly mounted on a side of the storage box close to the square block, the limit block is rotatably mounted between the splints, the seesaw rotates and passes through the inner and outer walls of the square block, the circular block is fixedly mounted on one end of the seesaw close to the storage box, the cross plate rotates and passes through the inner and outer walls of the sliding rod, the top and bottom of the cross plate are fixedly mounted with a No. 3 spring, the adjusting block is fixedly mounted on one end of the No. 3 spring away from the cross plate, the sliding rod moving toward the bottom will drive the cross plate to move toward the bottom, the cross plate moving toward the bottom will drive the No. 3 spring to move toward the bottom, the No. 3 spring moving toward the bottom will drive the adjusting block to move toward the bottom, and the adjusting block moving toward the bottom will contact the ground.

[0013] According to the above technical solution, a torsion spring is arranged between the limit block and the clamping plate, the circular block contacts the limit block, and the limit block is driven to reset by the torsion spring.

[0014] According to the above technical solution, a No. 4 spring is arranged between the slide bar and the storage box, the limit block is in contact with the limit hole, and the slide bar is driven to reset by the No. 4 spring.

[0015] The present invention provides a sampling device for detecting the compaction degree of a highway roadbed and pavement. It has the following beneficial effects:

[0016] (1) The invention increases the friction between the arc plate and the drill bit, thereby increasing the resistance when the drill bit moves toward the top, so that the drill bit can only move slowly when moving toward the top, thereby preventing the drill bit from shrinking quickly and causing the drill bit to collide, causing the internal sample to fall and making it impossible to complete the sampling, thereby improving the stability of the device during operation. After the limit plate moves toward the top, the arc plate will be re-limited, so that the arc plate and the drill bit will no longer contact after the drill bit completes the sampling, thereby preventing the device from being damaged due to excessive resistance when the drill bit takes samples again, thereby improving the protection effect of the device.

[0017] (2) In the present invention, after the tray is rotated 180 degrees, it will be at the bottom of the drill bit. After the drill bit completes drilling and sampling, the tray will hold up the sample, making it easier for the staff to pick up the sample and improving work efficiency. When the slider moves toward the top, the U-shaped rod will move toward the top. After the U-shaped rod moves toward the top, it will contact the tray. The U-shaped rod will support the tray to prevent the tray from falling due to being too heavy, thereby improving the practicality of the device.

[0018] (3) This invention, after the slide bar loses its limit, it is reset by the No. 4 spring and drives the slide bar to move toward the bottom. When the slide bar moves toward the bottom, it will come into contact with the ground, thereby improving the stability of the device during operation and the accuracy of sampling. When the adjustment block moves toward the bottom, it will come into contact with the ground, thereby increasing the ground contact area of ​​the device. The deformation of the No. 3 spring allows the device to adapt to different terrains, and sampling can be performed in various terrains, thereby improving the diversity of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the positional relationship between the cylinder and the sampling vehicle of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the protective device of the present invention;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the hollow box of the present invention;

[0023] Figure 5 This is a schematic diagram of the cross-sectional structure of the support plate of the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the sample collecting device of the present invention;

[0025] Figure 7 It is a schematic diagram of the structure of the supporting device of the present invention.

[0026] In the figure: 1. sampling vehicle; 2. cylinder; 3. hydraulic column; 4. hydraulic rod; 51. support plate; 52. rotating motor; 53. drill bit; 54. hollow box; 55. telescopic rod; 56. flat plate; 57. limit plate; 58. sliding block; 59. arc plate; 510. spring No. 1; 511. top plate; 512. arc surface block; 61. screw rod; 62. sliding groove; 63. spiral groove; 64. collar; 65. tray; 66. square block; 67. slider; 68. transmission block; 69. U-shaped rod; 610. spring No. 2; 71. storage box; 72. slide rod; 73. splint; 74. limit block; 75. seesaw; 76. round block; 77. horizontal plate; 78. adjustment block; 79. spring No. 3; 710. spring No. 4. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 4 An embodiment of the present invention is: a sampling device for detecting the compaction degree of a highway roadbed and pavement, comprising a sampling vehicle 1, a cylinder 2 is fixedly installed on the top of the sampling vehicle 1, a hydraulic column 3 is fixedly installed on the surface of the sampling vehicle 1, a hydraulic rod 4 is fixedly installed on the surface of the hydraulic column 3, a protective device is arranged on the top of the sampling vehicle 1, and the protective device comprises: a support plate 51, a rotating motor 52, a drill bit 53, a hollow box 54, a telescopic rod 55, a flat plate 56, a limit plate 57, a sliding block 58, an arc plate 59, a No. 1 spring 510, a top plate 511 and an arc surface block 512, the support plate 51 is fixedly installed on the surface of the sampling vehicle 1, the rotating motor 52 is fixedly installed on the bottom of the output end of the hydraulic rod 4, the drill bit 53 slides through the inner and outer walls of the support plate 51, the output end of the rotating motor 52 is fixedly installed on the top of the drill bit 53, and the hollow box 54 is fixedly installed on the top of the support plate 51 The telescopic rod 55 is fixedly mounted on the top of the support plate 51, the flat plate 56 is fixedly mounted on the top of the free end of the telescopic rod 55, the limit plate 57 is fixedly mounted on the top of the flat plate 56, the sliding block 58 is slidably mounted on the inner wall of the hollow box 54, the arc plate 59 is fixedly mounted between the sliding blocks 58, the No. 1 spring 510 is arranged between the arc plate 59 and the hollow box 54, the top plate 511 is fixedly mounted on the top of the hollow box 54, and a square hole is opened on the surface of the hollow box 54. The arc block 512 is fixedly mounted on the circumferential surface of the drill bit 53, so that the drill bit 53 can only move slowly when moving to the top, preventing the drill bit 53 from shrinking quickly, which will cause the drill bit 53 to collide, causing the internal sample to fall and making it impossible to complete the sampling, thereby improving the stability of the device during operation, preventing the drill bit 53 from being damaged due to excessive resistance when sampling again, and improving the protection effect of the device.

[0029] A return spring is arranged inside the telescopic rod 55 , and the arc plate 59 contacts the drill bit 53 , and the return spring drives the free end of the telescopic rod 55 to return to its original position.

[0030] The limiting plate 57 contacts the arc plate 59 , and the arc surface block 512 contacts the limiting plate 57 , so that the arc plate 59 is limited by the limiting plate 57 .

[0031] When the present embodiment is working, the hydraulic rod 4 is started, the output end of the hydraulic rod 4 moves toward the bottom, driving the rotating motor 52 to move toward the bottom, the rotating motor 52 is started, the output end of the rotating motor 52 rotates to drive the drill bit 53 to rotate, the drill bit 53 rotates and moves toward the bottom to drill the road surface, the drill bit 53 moves toward the bottom to drive the arc block 512 to move toward the bottom, the arc block 512 moves toward the bottom to contact the flat plate 56, the arc block 512 moves to drive the flat plate 56 to move toward the bottom, the flat plate 56 moves toward the bottom to drive the limit plate 57 to move The bottom moves, and the limit plate 57 moves to the bottom and no longer contacts the arc plate 59. After the limit plate 57 no longer contacts the arc plate 59, the arc plate 59 loses its limit. After the arc plate 59 loses its limit, it is reset by the No. 1 spring 510 to drive the arc plate 59 to move in the direction of the drill bit 53. The movement of the arc plate 59 will contact the drill bit 53. After the arc plate 59 contacts the drill bit 53, the friction between the arc plate 59 and the drill bit 53 increases. After the friction between the arc plate 59 and the drill bit 53 increases, the resistance when the drill bit 53 moves to the top increases. , so that the drill bit 53 can only move slowly when moving toward the top, to prevent the drill bit 53 from shrinking quickly and causing the drill bit 53 to collide and cause the internal sample to fall, resulting in the inability to complete the sampling, and to improve the stability of the device during operation. After the drill bit 53 completes drilling, the output end of the hydraulic rod 4 moves toward the top, which will drive the drill bit 53 to move toward the top, and the drill bit 53 moving toward the top will drive the arc block 512 to move toward the top. When the arc block 512 moves toward the top, it will contact the arc plate 59, and the arc block 512 moving toward the top will push the arc plate 59 away from the drill bit 5 3. After the arc plate 59 moves, it is reset by the reset spring and drives the free end of the telescopic rod 55 to move toward the top. The free end of the telescopic rod 55 moving toward the top will drive the flat plate 56 to move toward the top. The movement of the flat plate 56 will drive the limiting plate 57 to move toward the top. After the limiting plate 57 moves toward the top, the arc plate 59 will be re-limited, so that the arc plate 59 and the drill bit 53 are no longer in contact after the drill bit 53 completes sampling, thereby preventing the device from being damaged due to excessive resistance when the drill bit 53 takes samples again, thereby improving the protection effect of the device.

[0032] See also Figure 1-Figure 7On the basis of the above embodiment, in another embodiment of the present invention, a sample collecting device and a supporting device are arranged on the top of the sampling vehicle 1, wherein the sample collecting device comprises: a screw rod 61, a sliding groove 62, a spiral groove 63, a collar 64, a tray 65, a square block 66, a slider 67, a transmission block 68 and a U-shaped rod 69, the screw rod 61 slides through the inner and outer walls of the support plate 51, the screw rod 61 is fixedly installed at the bottom of the flat plate 56, the sliding groove 62 is provided on the circumferential surface of the screw rod 61, the spiral groove 63 is provided on the circumferential surface of the screw rod 61, the collar 64 is slidably installed on the spiral groove 64, and the screw rod 61 is fixedly installed on the bottom of the flat plate 56. The tray 65 is fixedly mounted on the circumferential surface of the collar 64, so that after the drill bit 53 completes drilling and sampling, the tray 65 will lift the sample, which is convenient for the staff to take and improve work efficiency. The square block 66 is fixedly mounted on the bottom of the support plate 51, and the slider 67 is slidably mounted on the inner wall of the square block 66. The transmission block 68 is fixedly mounted on the surface of the slider 67, and the U-shaped rod 69 is fixedly mounted on the bottom of the slider 67. The U-shaped rod 69 will support the tray 65 to prevent the tray 65 from falling due to being too heavy, thereby improving the practicability of the device.

[0033] A No. 2 spring 610 is provided between the slider 67 and the square block 66 , and the U-shaped rod 69 contacts the bottom of the tray 65 , and the No. 2 spring 610 drives the slider 67 to reset.

[0034] The supporting device includes: a storage box 71, a slide bar 72, a clamping plate 73, a limit block 74, a seesaw 75, a circular block 76, a cross plate 77 and an adjusting block 78. The storage box 71 is fixedly mounted on the surface of the supporting plate 51, the slide bar 72 is slidably mounted on the inner wall of the storage box 71, and the surfaces of the storage box 71 and the slide bar 72 are provided with limit holes. The clamping plate 73 is fixedly mounted on a side of the storage box 71 close to the square block 66, the limit block 74 is rotatably mounted between the clamping plates 73, the seesaw 75 rotates through the inner and outer walls of the square block 66, and the circular block 76 is fixedly mounted on one end of the seesaw 75 close to the storage box 71, which improves the stability of the device during operation and the accuracy of sampling. The horizontal plate 77 rotates and passes through the inner and outer walls of the slide bar 72. The top and bottom of the horizontal plate 77 are fixedly mounted with No. 3 springs 79. The adjustment block 78 is fixedly mounted on the end of the No. 3 spring 79 away from the horizontal plate 77, which increases the ground contact area of ​​the device. The deformation of the No. 3 spring 79 allows the device to adapt to different terrains, and sampling can be performed on various terrains, thereby improving the diversity of the device.

[0035] A torsion spring is provided between the limit block 74 and the clamping plate 73 , and the circular block 76 contacts the limit block 74 , and the limit block 74 is driven to reset by the torsion spring.

[0036] A No. 4 spring 710 is provided between the slide bar 72 and the storage box 71 , and the limit block 74 is in contact with the limit hole, and the slide bar 72 is driven to reset by the No. 4 spring 710 .

[0037] When the present embodiment is working, the flat plate 56 moves toward the top, which drives the screw rod 61 to move toward the top. The screw rod 61 moves toward the top, which drives the spiral groove 63 to move toward the top. The spiral groove 63 moves toward the top, which drives the collar 64 to rotate 180 degrees. The rotation of the collar 64 drives the tray 65 to rotate 180 degrees. After the tray 65 rotates 180 degrees, it will be at the bottom of the drill bit 53, so that after the drill bit 53 completes drilling and sampling, the tray 65 will lift the sample, which is convenient for the staff to take and improve the work efficiency. When the flat plate 56 moves toward the bottom, it drives the screw rod 61 to move toward the bottom. The movement of the screw rod 61 drives the spiral groove 63 to move toward the bottom. The spiral groove 63 moves to the bottom. The movement of the bottom will drive the ring 64 to rotate 180 degrees. After the ring 64 rotates 180 degrees, it will drive the tray 65 to rotate 180 degrees. After the tray 65 rotates, it will no longer block the drill bit 53 from moving to the bottom, and will not hinder the drill bit 53 from taking samples normally. The rotation of the tray 65 will contact the transmission block 68. The rotation of the tray 65 will drive the transmission block 68 to move toward the top. The movement of the transmission block 68 to the top will drive the slider 67 to move toward the top. The movement of the slider 67 to the top will drive the U-shaped rod 69 to move toward the top. After the U-shaped rod 69 moves to the top, it will contact the tray 65. The U-shaped rod 69 will support the tray 65 to prevent the tray 65 from falling due to being too heavy, thereby improving the practicability of the device.

[0038] When the locking cam 75 is in the unlocked position, the locking cam 73 will be in the unlocked position, and the locking cam 73 will be in the unlocked position, so that the locking cam 73 will be locked.

[0039] 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 sampling device for detecting the compaction degree of a highway roadbed and pavement, comprising a sampling vehicle (1), characterized in that: A cylinder (2) is fixedly mounted on the top of the sampling vehicle (1), a hydraulic column (3) is fixedly mounted on the surface of the sampling vehicle (1), a hydraulic rod (4) is fixedly mounted on the surface of the hydraulic column (3), and a protective device, a sample collecting device and a supporting device are arranged on the top of the sampling vehicle (1); The protective device comprises: a support plate (51), a rotating motor (52), a drill bit (53), a hollow box (54), a telescopic rod (55), a flat plate (56), a limit plate (57), a sliding block (58), an arc plate (59), a No. 1 spring (510), a top plate (511) and an arc surface block (512), wherein the support plate (51) is fixedly mounted on the surface of the sampling vehicle (1), the rotating motor (52) is fixedly mounted on the bottom of the output end of the hydraulic rod (4), the drill bit (53) slides through the inner and outer walls of the support plate (51), the output end of the rotating motor (52) is fixedly mounted on the top of the drill bit (53), and the hollow box (54) is fixedly mounted on the support plate (5 1), the telescopic rod (55) is fixedly mounted on the top of the support plate (51), the flat plate (56) is fixedly mounted on the top of the free end of the telescopic rod (55), the limit plate (57) is fixedly mounted on the top of the flat plate (56), the sliding block (58) is slidably mounted on the inner wall of the hollow box (54), the arc plate (59) is fixedly mounted between the sliding blocks (58), the first spring (510) is arranged between the arc plate (59) and the hollow box (54), the top plate (511) is fixedly mounted on the top of the hollow box (54), a square hole is opened on the surface of the hollow box (54), and the arc surface block (512) is fixedly mounted on the circumferential surface of the drill bit (53).

2. A sampling device for detecting compaction of a highway subgrade and pavement according to claim 1, characterized in that: A return spring is arranged inside the telescopic rod (55), and the arc-shaped plate (59) is in contact with the drill bit (53).

3. A sampling device for detecting compaction of a highway roadbed and pavement according to claim 2, characterized in that: The limiting plate (57) contacts the arc plate (59), and the arc surface block (512) contacts the limiting plate (57).

4. A sampling device for detecting compaction of a highway roadbed and pavement according to claim 3, characterized in that: The sample collecting device comprises: a screw rod (61), a sliding groove (62), a spiral groove (63), a collar (64), a tray (65), a square block (66), a slider (67), a transmission block (68) and a U-shaped rod (69), wherein the screw rod (61) slides through the inner and outer walls of the support plate (51), the screw rod (61) is fixedly mounted on the bottom of the flat plate (56), the sliding groove (62) is provided on the circumferential surface of the screw rod (61), and the spiral groove (63) is provided on the screw rod. The sleeve (64) is slidably mounted on the inner wall of the spiral groove (63) and the sliding groove (62), the tray (65) is fixedly mounted on the circumferential surface of the sleeve (64), the square block (66) is fixedly mounted on the bottom of the support plate (51), the slider (67) is slidably mounted on the inner wall of the square block (66), the transmission block (68) is fixedly mounted on the surface of the slider (67), and the U-shaped rod (69) is fixedly mounted on the bottom of the slider (67).

5. A sampling device for detecting compaction of a highway subgrade and pavement according to claim 4, characterized in that: A No. 2 spring (610) is provided between the sliding block (67) and the square block (66), and the U-shaped rod (69) is in contact with the bottom of the tray (65).

6. A sampling device for detecting compaction of a highway roadbed and pavement according to claim 5, characterized in that: The supporting device comprises: a storage box (71), a slide bar (72), a clamping plate (73), a limit block (74), a seesaw (75), a circular block (76), a horizontal plate (77) and an adjusting block (78), wherein the storage box (71) is fixedly mounted on the surface of the supporting plate (51), the slide bar (72) is slidably mounted on the inner wall of the storage box (71), the surfaces of the storage box (71) and the slide bar (72) are both provided with limit holes, and the clamping plate (73) is fixedly mounted on the storage box (71) near the square block (66) ), the limit block (74) is rotatably mounted between the clamping plates (73), the seesaw (75) is rotatably mounted through the inner and outer walls of the square block (66), the circular block (76) is fixedly mounted on one end of the seesaw (75) close to the storage box (71), the horizontal plate (77) is rotatably mounted through the inner and outer walls of the slide rod (72), the top and bottom of the horizontal plate (77) are fixedly mounted with a No. 3 spring (79), and the adjustment block (78) is fixedly mounted on one end of the No. 3 spring (79) away from the horizontal plate (77).

7. A sampling device for detecting compaction of a highway roadbed and pavement according to claim 6, characterized in that: A torsion spring is provided between the limit block (74) and the clamping plate (73), and the circular block (76) is in contact with the limit block (74).

8. A sampling device for detecting compaction of a highway roadbed and pavement according to claim 7, characterized in that: A No. 4 spring (710) is provided between the slide bar (72) and the storage box (71), and the limit block (74) is in contact with the limit hole.

Images