CN117661532A - Roadbed layer compactness detection sampler and sampling method - Google Patents

Abstract

The invention relates to the technical field of roadbed layer compactness detection, in particular to a roadbed layer compactness detection sampler and a roadbed layer compactness detection sampling method. According to the invention, the base soil cleaning mechanism is arranged at the bottom of the base, the base soil loosened due to the pressure of the cutting ring can be pushed and cleaned when the cutting ring cuts the road base layer through the base soil cleaning mechanism, and the base soil is pushed to a direction far away from the cutting ring by matching with the arrangement of the vertical pushing component in the base soil cleaning mechanism, so that the base soil is prevented from moving into holes generated during cutting ring sampling, and errors generated during cutting ring sampling are reduced.

Description

Roadbed layer compactness detection sampler and sampling method

Technical Field

The invention relates to the technical field of roadbed layer compactness detection, in particular to a roadbed layer compactness detection sampler and a roadbed layer compactness detection sampling method.

Background

The compaction degree of the roadbed is one of key indexes for detecting the construction quality of the roadbed and the road surface, firstly taking a soil sample before compaction to send to a laboratory to measure the dry density when the soil sample is at the optimal water content, which is the maximum dry density of a sample, then taking the sample after compaction to measure the actual dry density, dividing the actual dry density by the maximum dry density to obtain the actual compaction degree of soil, and comparing the actual dry density with the compaction degree specified by a standard to know whether the compaction degree of the soil reaches the quality standard;

publication number "CN219886764U" discloses a highway engineering roadbed layer compactness detection device, including two sets of bases, two sets of the top of base all is provided with the side board, two sets of the side board is close to each other one side be provided with the roadbed layer detection component jointly. When the device is used for sampling, firstly, annular cutting is carried out on a sampling road base layer through rotation of the perforated ring, then, cutting and crushing are carried out on foundation soil in a sampling area through the cutter, and further, in the sampling and crushing process, the inner wall of a hole is isolated through protection of the perforated ring and preferential annular cutting, so that the phenomenon of damaging the inner wall of the hole cannot occur when the foundation soil in the hole of the road base layer is sampled;

the above device has the following drawbacks:

1. when the device is used for punching and crushing the sampling road base layer through the hole-punching ring, the foundation soil around the hole can move towards the inside of the hole after being subjected to pressure, and the foundation soil can be stacked in the hole to influence the sampling result when the sampling is carried out through the ring cutter subsequently;

2. the device is fixed through the mode that the base directly contacted with the road bed layer when using, but lacks holistic location structure when using on some slope road base surfaces, and the whole base of base can take place the displacement because of gravity when using to lead to the sample to appear the error.

Disclosure of Invention

The invention aims to provide a roadbed layer compactness detection sampler and a roadbed layer compactness detection sampling method, so as to solve the problem that loose foundation soil influences ring cutter sampling.

In order to achieve the above purpose, the present invention provides the following technical solutions:

the utility model provides a road bed lamination solidity detects sampler, includes the base, the fixed support that is provided with in top of base, be provided with the cutting ring sampling mechanism on the support, the cutting ring sampling mechanism is used for cutting the road basic layer and takes a sample, the bottom of base is provided with foundation soil clearance mechanism, foundation soil clearance mechanism is used for clearing up the foundation soil that produces when cutting the road basic layer to the cutting ring, the side of base is provided with positioning mechanism, positioning mechanism is used for improving holistic stability, positioning mechanism is connected with foundation soil clearance mechanism cooperation, positioning mechanism is fixed whole at first, makes base and road bed layer parallel contact, then passes through cutting ring sampling mechanism drives the cutting ring road basic layer in the inside of base, cutting ring sampling mechanism can also drive foundation soil clearance mechanism action through positioning mechanism drives the foundation soil that produces when cutting ring road basic layer, prevents that foundation soil and sample from mixing and appearing the error.

Preferably, the foundation soil cleaning mechanism comprises an outer gear ring, a connecting rod and a scraping plate, wherein the outer gear ring is rotationally arranged on the side face of the base, a plurality of connecting rods are equidistantly distributed at the bottom of the outer gear ring, the scraping plate is arranged at the bottom of the connecting rod and is in contact with the bottom of the base, the outer gear ring drives the scraping plate to synchronously rotate through the connecting rod when rotating, so that foundation soil around the ring cutter is pushed by the scraping plate in a rotating mode, and the scraping plate pushes the foundation soil in a direction away from the ring cutter through a vertical pushing component, so that the foundation soil is prevented from interfering with the sampling process of the ring cutter.

Preferably, the vertical pushing component comprises a pushing plate, a traction block, a sliding chute, a rotating shaft, a guide groove and a guide block, wherein the sliding chute is formed in the surface of the scraping plate, the pushing plate is fixed on the surface of the traction block, the traction block is arranged inside the sliding chute and slides on the surface of the rotating shaft in a sliding manner, the rotating shaft rotates on the inner wall of the sliding chute, the guide groove is spirally arranged on the surface of the rotating shaft, the guide block is fixed on the inner wall of the traction block and is connected with the guide groove in a matched manner, and the traction block is driven to linearly move in the sliding chute through the matching of the guide groove and the guide block during rotation of the rotating shaft, so that the traction block drives the pushing plate to synchronously move, and the foundation soil driven by the scraping plate is pushed towards the direction far away from the cutting ring through a pushing and matching reciprocating structure of the pushing plate.

Preferably, the reciprocating structure comprises a torsion spring, a first gear, a groove and gear teeth, wherein the first gear is fixed at one end of the rotating shaft and rotates in the scraper blade, the groove is formed in the bottom of the base, the gear teeth are arranged in the groove and are connected with the first gear in a matched mode, the torsion spring is fixed between the first gear and the sliding groove and is sleeved on the surface of the rotating shaft, the scraper blade can drive the first gear to rotate on the surface of the gear teeth when rotating, at the moment, the first gear drives the rotating shaft to rotate in the traction block, the torsion spring deforms and stores energy, and when the first gear rotates to an area where the gear teeth are not arranged in the groove, the torsion spring releases energy to drive the rotating shaft to reversely rotate, so that reciprocating movement of the push plate is achieved.

Preferably, the positioning mechanism comprises a motor, a driving shaft, a sleeve, a fixed foot and a second gear, wherein the motor is arranged between the base and the support and is in spline connection with the driving shaft, one end of the driving shaft rotates on the surface of the base, the other end of the driving shaft is connected with the sleeve capable of vertically and reciprocally moving, the second gear is fixed on the surface of the sleeve, the fixed foot is arranged at the bottom of the sleeve, the motor drives the sleeve to rotate through the driving shaft, and the sleeve drives the fixed foot to rotate, so that the fixed foot gradually extends towards the inside of the roadbed layer to realize fixation of the whole body until the bottom of the base contacts with the roadbed layer.

Preferably, the cutting ring sampling mechanism comprises a cylinder, an extrusion block, a protection cylinder, a connecting plate, a guide rod, a push rod, a connecting arm, a partition plate and a circular frame, wherein the cylinder is arranged at the top of the support, the extrusion block is fixed at the output end of the cylinder, a plurality of guide rods are fixed at the top of the extrusion block through the connecting plate, one end of each guide rod is elastically movably provided with the push rod through a first spring, the connecting arm is fixed on the surface of the sleeve and is movably connected with the surface of the base, the top end of the connecting arm is elastically movably connected with the base through a second spring, the circular frame is fixed at the bottoms of the plurality of push rods, the protection cylinder is concentrically arranged in the circular frame, and the partition plate is fixed inside the protection cylinder and divides the protection cylinder into a sampling cavity and an extrusion cavity, and the elastic coefficient of the first spring is larger than that of the second spring.

Preferably, the surface of the driving shaft is provided with a guide part, the inner wall of the sleeve is provided with a track matched with the guide part, the inner wall of the sleeve is fixed with a limiting rod, and a limiting cavity matched with the limiting rod is formed in the driving shaft.

A sampling method comprising the steps of:

s1, integrally positioning, namely firstly placing a base on a roadbed layer, placing a cutting ring into a sampling cavity, then starting a motor, driving a driving shaft to rotate by the motor, driving a sleeve to rotate by the driving shaft through cooperation between a guide part and a track, and driving fixing feet to rotate by the sleeve, wherein the fixing feet can gradually enter the roadbed layer to fix the whole body when rotating;

s2, sampling a roadbed layer, starting an air cylinder, wherein the air cylinder drives an extrusion block to move downwards, and the extrusion block can drive a circular frame to move synchronously through a connecting plate, a guide rod and a push rod when moving downwards, so that a protection cylinder is driven to move downwards synchronously through the circular frame, and the protection cylinder drives a cutting ring to move downwards horizontally, and at the moment, the extrusion block can push the cutting ring to cut the roadbed layer to sample through a partition plate in the extrusion cavity;

s3, foundation soil is cleaned, when the extrusion block pushes the ring cutter to sample, the circular frame extrudes the connecting arm, and as the elastic coefficient of the first spring is larger than that of the second spring, the second spring deforms first, so that the connecting arm drives the second gear to move downwards through the sleeve and to be matched with the outer gear ring, at the moment, the second gear can drive the outer gear ring to rotate, and the outer gear ring drives the scraping plate to rotate at the bottom of the base through the connecting rod when rotating, so that foundation soil around the ring cutter is cleaned.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the base soil cleaning mechanism is arranged at the bottom of the base, so that the base soil loosened due to the pressure of the cutting ring can be pushed and cleaned when the cutting ring cuts a road base layer, and the base soil is pushed in a direction away from the cutting ring by matching with the arrangement of the vertical pushing component in the base soil cleaning mechanism, so that the base soil is prevented from moving into holes generated during cutting ring sampling, and errors generated during cutting ring sampling are reduced;

2. according to the invention, the positioning mechanism is arranged on the side surface of the base, and the whole equipment can be fixed on the roadbed layer before the annular cutter is used for sampling, so that the bottom of the base can be horizontally attached to the surface of the roadbed layer under any condition, the perpendicularity of the annular cutter when cutting the roadbed layer is ensured, the whole equipment for cutting the roadbed layer by the annular cutter can be prevented from moving, and the error of the annular cutter during sampling is further reduced;

3. according to the invention, through the arrangement of the ring cutter sampling mechanism, the ring cutter can be used for cutting the road base layer to sample, and the foundation soil cleaning mechanism can be driven to clean the foundation soil around the ring cutter just when the ring cutter contacts the road base layer, so that even if the surrounding foundation soil is loosened when the ring cutter cuts the road base layer, the cutting process of the ring cutter is slow, the topography of a cut area is high and the cleaned area topography is low, so that the loosened foundation soil can move towards the cleaned area, and the foundation soil is prevented from influencing the sampling result of the ring cutter again.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

FIG. 1 is a schematic view of a main body view structure of the present invention;

FIG. 2 is a schematic view of the bottom view structure of the present invention;

FIG. 3 is a schematic view of the connection structure of the extrusion block and the protection cylinder of the present invention;

FIG. 4 is a schematic main structure of the foundation soil cleaning mechanism of the present invention;

FIG. 5 is a schematic view of the main structure of the vertical pushing assembly of the present invention;

FIG. 6 is a schematic diagram of the main structure of the positioning mechanism of the present invention;

FIG. 7 is a schematic diagram of the main structure of the groove and gear teeth of the present invention;

FIG. 8 is a schematic view of a connection structure of a push rod and a connecting arm according to the present invention;

fig. 9 is a schematic view of the connection structure of the driving shaft and the sleeve according to the present invention.

In the figure: 1. a base; 2. a bracket; 3. a ring cutter sampling mechanism; 31. a cylinder; 32. extruding a block; 33. a protective cylinder; 331. a sampling cavity; 332. an extrusion chamber; 34. a connecting plate; 35. a guide rod; 36. a push rod; 37. a connecting arm; 38. a partition plate; 39. a circular frame; 4. a foundation soil cleaning mechanism; 41. an outer ring gear; 42. a connecting rod; 43. a scraper; 5. a positioning mechanism; 51. a motor; 52. a drive shaft; 53. a sleeve; 54. a fixed foot; 55. a second gear; 6. a vertical pushing assembly; 61. a push plate; 62. a traction block; 63. a chute; 64. a rotating shaft; 65. a guide groove; 66. a guide block; 7. a reciprocating structure; 71. a torsion spring; 72. a first gear; 73. a groove; 74. gear teeth; 8. a first spring; 9. a second spring; 10. a guide part; 11. a track; 12. a limit rod; 13. and a limiting cavity.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 to 9, the present invention provides an embodiment: the utility model provides a road bed layer compactness detects sampler, including base 1, the fixed support 2 that is provided with in top of base 1, be provided with cutting ring sampling mechanism 3 on the support 2, cutting ring sampling mechanism 3 is used for cutting the road base layer and takes a sample, the bottom of base 1 is provided with foundation soil clearance mechanism 4, foundation soil clearance mechanism 4 is used for clearing up the foundation soil that produces when cutting ring cutting road base layer, the side of base 1 is provided with positioning mechanism 5, positioning mechanism 5 is used for improving holistic stability, positioning mechanism 5 is connected with foundation soil clearance mechanism 4 cooperation.

The positioning mechanism 5 is firstly used for fixing the whole body, so that the base 1 is in parallel contact with the roadbed layer, then the cutting ring is driven to cut the roadbed layer through the cutting ring sampling mechanism 3 in the base 1, the cutting ring sampling mechanism 3 can also drive the base soil cleaning mechanism 4 to act through the positioning mechanism 5, so that base soil generated when the cutting ring is used for cutting the roadbed layer through the base soil cleaning mechanism 4 is cleaned, and errors are prevented from occurring in mixing of the base soil and a sample.

As shown in fig. 1, 2 and 3, the foundation soil cleaning mechanism 4 comprises an outer gear ring 41, connecting rods 42 and scraping plates 43, the outer gear ring 41 is rotatably arranged on the side surface of the base 1, a plurality of connecting rods 42 are equidistantly distributed at the bottom of the outer gear ring 41, the scraping plates 43 are arranged at the bottom of the connecting rods 42 and are in contact with the bottom of the base 1, the outer gear ring 41 drives the scraping plates 43 to synchronously rotate through the connecting rods 42 during rotation, so that foundation soil around a ring cutter is pushed by the scraping plates 43 in a rotating mode, and the scraping plates 43 push the foundation soil in a direction away from the ring cutter through the vertical pushing component 6, so that the foundation soil is prevented from interfering with the sampling process of the ring cutter.

As shown in fig. 5, the vertical pushing component 6 includes a pushing plate 61, a traction block 62, a sliding groove 63, a rotating shaft 64, a guiding groove 65 and a guiding block 66, the sliding groove 63 is formed on the surface of the scraper 43, the pushing plate 61 is fixed on the surface of the traction block 62, the traction block 62 is slidably disposed in the sliding groove 63 and is slidably disposed on the surface of the rotating shaft 64, the rotating shaft 64 rotates on the inner wall of the sliding groove 63, the guiding groove 65 is spirally disposed on the surface of the rotating shaft 64, the guiding block 66 is fixed on the inner wall of the traction block 62 and is cooperatively connected with the guiding groove 65, the rotating shaft 64 drives the traction block 62 to linearly move in the sliding groove 63 through the cooperation of the guiding groove 65 and the guiding block 66, so that the traction block 62 drives the pushing plate 61 to synchronously move, the foundation soil driven by the scraper 43 is pushed in a direction far away from the ring cutter through a pushing cooperation reciprocating structure 7 of the pushing plate 61, the reciprocating structure 7 includes a torsion spring 71, a first gear 72, a groove 73 and a 74, the first gear 72 is fixed on one end of the rotating shaft 64 and rotates in the inner part of the scraper 64, the groove 73 is formed on the bottom of the base 1, and the gear teeth 74 are disposed in the groove 73 and are cooperatively connected with the first gear 72 and the surface of the torsion spring 63.

Specifically, when the scraper 43 rotates, the first gear 72 can be driven to rotate on the surface of the gear teeth 74, at this time, the first gear 72 drives the rotating shaft 64 to rotate in the traction block 62 and simultaneously deforms and stores energy in the torsion spring 71, and when the first gear 72 rotates to a region in the groove 73 where the gear teeth 74 are not arranged, the torsion spring 71 releases energy to drive the rotating shaft 64 to reversely rotate, so that the reciprocating movement of the push plate 61 is realized.

As shown in fig. 1, 2 and 6, the positioning mechanism 5 includes a motor 51, a driving shaft 52, a sleeve 53, a fixing foot 54 and a second gear 55, the motor 51 is disposed between the base 1 and the bracket 2 and is in spline connection with the driving shaft 52, one end of the driving shaft 52 rotates on the surface of the base 1, the other end of the driving shaft 52 is connected with the sleeve 53 capable of vertically reciprocating, the second gear 55 is fixed on the surface of the sleeve 53, the fixing foot 54 is disposed at the bottom of the sleeve 53, the motor 51 drives the sleeve 53 to rotate through the driving shaft 52, and the sleeve 53 drives the fixing foot 54 to rotate, so that the fixing foot 54 gradually extends towards the inside of the roadbed layer to achieve overall fixing until the bottom of the base 1 contacts with the roadbed layer.

As shown in fig. 1, 2 and 3, the ring cutter sampling mechanism 3 comprises a cylinder 31, an extrusion block 32, a protection cylinder 33, a connecting plate 34, a guide rod 35, a push rod 36, a connecting arm 37, a partition 38 and a circular frame 39, wherein the cylinder 31 is arranged at the top of the bracket 2, the extrusion block 32 is fixed at the output end of the cylinder 31, a plurality of guide rods 35 are fixed at the top of the extrusion block 32 through the connecting plate 34, and one end of each guide rod 35 is elastically and movably provided with the push rod 36 through a first spring 8.

Specifically, the connecting arm 37 is fixed on the surface of the sleeve 53 and movably connected to the surface of the base 1, the top end of the connecting arm 37 is elastically movably connected with the base 1 through the second spring 9, the circular frame 39 is fixed at the bottoms of the plurality of push rods 36, the protective cylinder 33 is concentrically arranged in the circular frame 39, the partition 38 is fixed inside the protective cylinder 33 and divides the protective cylinder 33 into a sampling cavity 331 and a pressing cavity 332, and the elastic coefficient of the first spring 8 is larger than that of the second spring 9.

It should be noted that, when the extrusion block 32 drives the connection arm 37 to move through the connection plate 34, the connection arm 37 drives the connection arm 37 to compress the second spring 9 first, then, as the extrusion block 32 continuously moves down, the connection arm 37 drives the guide rod 35 to compress the first spring 8 inside the push rod 36, when the extrusion block 32 is reset, the first spring 8 is reset, then, the second spring 9 is reset, that is, the separation of the first gear 72 and the outer gear ring 41 needs to be achieved when the extrusion block 32 is about to be completely reset, so that the foundation soil cleaning mechanism 4 will not stop working until the extrusion block 32 is about to be completely reset.

As shown in fig. 9, the surface of the driving shaft 52 is provided with a guide part 10, the inner wall of the sleeve 53 is provided with a track 11 matched with the guide part 10, the inner wall of the sleeve 53 is fixed with a limit rod 12, and the inside of the driving shaft 52 is provided with a limit cavity 13 matched with the limit rod 12.

Specifically, since the driving shaft 52 needs to drive the sleeve 53 to rotate, the engagement between the guide portion 10 and the rail 11 can be regarded as a spline connection between the driving shaft 52 and the sleeve 53, and the engagement between the guide portion 10 and the rail 11 enables the sleeve 53 to move linearly in the axial direction on the surface of the driving shaft 52, so that the first gear 72 is engaged with the outer gear ring 41, and the sleeve 53 can be prevented from being completely separated from the surface of the driving shaft 52 by the arrangement of the limit lever 12 and the limit chamber 13.

The invention also provides a sampling method, which comprises the following steps:

s1, integrally positioning, firstly placing a base 1 on a roadbed layer, placing a cutting ring into a sampling cavity 331, then starting a motor 51, enabling the motor 51 to drive a driving shaft 52 to rotate, enabling the driving shaft 52 to drive a sleeve 53 to rotate through cooperation between a guide part 10 and a track 11, enabling the sleeve 53 to drive a fixed foot 54 to rotate, and enabling the fixed foot 54 to gradually enter the roadbed layer to fix the whole when rotating, wherein because four fixed feet 54 are controlled by four independent motors 51, each fixed foot 54 can work independently, so that the base 1 can be horizontally and stably contacted with the roadbed layer, and the cutting ring can be sampled conveniently.

S2, roadbed layer sampling, starting the air cylinder 31, enabling the air cylinder 31 to drive the extrusion block 32 to move downwards, and enabling the extrusion block 32 to drive the circular frame 39 to move synchronously through the connecting plate 34, the guide rod 35 and the push rod 36 when moving downwards, so that the circular frame 39 drives the protection cylinder 33 to move downwards synchronously, and further the protection cylinder 33 drives the ring cutter to move downwards horizontally, and at the moment, the extrusion block 32 can push the ring cutter to cut the roadbed layer to sample through the partition plate 38 in the extrusion cavity 332.

S3, cleaning the foundation soil, when the extrusion block 32 pushes the ring cutter to sample, the circular frame 39 can extrude the connecting arm 37, and as the elastic coefficient of the first spring 8 is larger than that of the second spring 9, the second spring 9 is deformed firstly, so that the connecting arm 37 drives the second gear 55 to move downwards through the sleeve 53 and to be matched with the outer gear ring 41, at the moment, the second gear 55 can drive the outer gear ring 41 to rotate, and when the outer gear ring 41 rotates, the connecting rod 42 drives the scraping plate 43 to rotate at the bottom of the base 1, so that the foundation soil around the ring cutter is cleaned.

Working principle: the ring cutter is placed in the sampling cavity 331, the whole body is placed on the surface of the roadbed layer through the four fixing feet 54, then the motor 51 is started, the driving shaft 52 is driven to rotate through the motor 51, the driving shaft 52 drives the fixing feet 54 to rotate through the sleeve 53, and as the surface of the fixing feet 54 is provided with the spiral blades, the bottom of the fixing feet 54 continuously drills into the roadbed layer during rotation until the bottom of the base 1 horizontally contacts with the surface of the roadbed layer, then the motor 51 is stopped, and the base 1 can play a supporting role on the surface of the roadbed layer.

At this time, the cylinder 31 is started, the extrusion block 32 is driven to move downwards by the cylinder 31, the extrusion block 32 can drive the circular frame 39 to move downwards synchronously by the connecting plate 34, the guide rod 35 and the push rod 36, and the circular frame 39 can drive the protective cylinder 33 and the ring knife at the bottom of the protective cylinder 33 to move synchronously when moving downwards until the circular frame 39 is contacted with the top of the base 1, at this time, the ring knife just completely submerges into the roadbed layer, and the top of the sampling cavity 331 is contacted with the top of the roadbed layer.

In the process of moving the extrusion block 32, the connecting plate 34 drives the push rod 36 to contact with the top of the connecting arm 37 through the guide rod 35, at this time, under the continuous downward pressing of the extrusion block 32, since the elastic coefficient of the first spring 8 is greater than that of the second spring 9, the connecting arm 37 firstly compresses the second spring 9 to deform, the bottom end of the connecting arm 37 can drive the sleeve 53 to move downwards on the surface of the driving shaft 52, so that the sleeve 53 drives the second gear 55 to move downwards to be meshed with the outer gear ring 41, then the motor 51 is started to rotate reversely, the motor 51 can drive the outer gear ring 41 to drive the scraper 43 to rotate through the connecting rod 42, so that the foundation soil around the ring is cleaned, at this time, the motor 51 drives the fixing feet 54 to rotate reversely, and the fixing feet 54 destroy the original structure in the holes drilled previously in the roadbed layer, so that the connection strength between the roadbed layer and the fixing feet 54 is reduced, the base 1 and the roadbed layer are separated conveniently, and the ring cutter is taken out conveniently.

The scraper 43 can drive the first gear 72 inside the scraper 43 to revolve in the groove 73 in the rotating process, and as the gear teeth 74 are arranged in the groove 73, the gear teeth 74 can drive the second gear 55 to rotate in the scraper 43, meanwhile, the second gear 55 can be matched with the scraper 43 to enable the torsion spring 71 to deform and store energy while rotating, the second gear 55 can drive the rotating shaft 64 to synchronously rotate in the rotating process, the rotating shaft 64 can be matched with the guide block 66 through the guide groove 65 formed in the surface of the rotating shaft 64 in the rotating process, the traction block 62 is driven by the guide block 66 to drive the push plate 61 to move towards the direction close to the second gear 55, and after the second gear 55 is separated from the surface of the gear teeth 74, the torsion spring 71 is reset to release energy, and then the rotating shaft 64 is driven to reversely rotate, so that the push plate 61 moves towards the direction far away from the second gear 55, and in the process, the push plate 61 realizes reciprocating movement perpendicular to the direction of the scraper 43, so that the foundation soil pushed by the scraper 43 is pushed towards the direction far away from the ring cutter.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides a road bed layer compactness detects sampler, includes base (1), its characterized in that: the road foundation cutting machine is characterized in that a support (2) is fixedly arranged at the top of the base (1), a cutting ring sampling mechanism (3) is arranged on the support (2), the cutting ring sampling mechanism (3) is used for cutting a road base layer for sampling, a foundation soil cleaning mechanism (4) is arranged at the bottom of the base (1), the foundation soil cleaning mechanism (4) is used for cleaning foundation soil generated when the cutting ring cuts the road base layer, a positioning mechanism (5) is arranged on the side face of the base (1), the positioning mechanism (5) is used for improving overall stability, and the positioning mechanism (5) is connected with the foundation soil cleaning mechanism (4) in a matched mode;

the positioning mechanism (5) is used for fixing the whole body, enabling the base (1) to be in parallel contact with the roadbed layer, then enabling the base (1) to be internally provided with the cutting ring sampling mechanism (3) for driving the cutting ring to cut the roadbed layer, enabling the cutting ring sampling mechanism (3) to be capable of driving the foundation soil cleaning mechanism (4) to act through the positioning mechanism (5), cleaning foundation soil generated when the cutting ring is used for cutting the roadbed layer through the foundation soil cleaning mechanism (4), and preventing errors from occurring when the foundation soil is mixed with a sample.

2. The roadbed layer solidity detection sampler according to claim 1, wherein: the foundation soil cleaning mechanism (4) comprises an outer gear ring (41), connecting rods (42) and scraping plates (43), wherein the outer gear ring (41) is rotatably arranged on the side surface of the base (1), a plurality of connecting rods (42) are equidistantly distributed at the bottom of the outer gear ring (41), and the scraping plates (43) are arranged at the bottom of the connecting rods (42) and are in contact with the bottom of the base (1);

the external gear ring (41) drives the scraping plates (43) to synchronously rotate through the connecting rods (42) when rotating, so that the foundation soil around the cutting ring is pushed by the scraping plates (43) in a rotating mode, and the scraping plates (43) push the foundation soil to a direction away from the cutting ring through the vertical pushing component (6), so that the foundation soil is prevented from interfering with the sampling process of the cutting ring.

3. The roadbed layer solidity detection sampler according to claim 2, wherein: the vertical pushing assembly (6) comprises a pushing plate (61), a traction block (62), a sliding groove (63), a rotating shaft (64), a guide groove (65) and a guide block (66), wherein the sliding groove (63) is formed in the surface of the scraping plate (43), the pushing plate (61) is fixed on the surface of the traction block (62), the traction block (62) is slidably arranged in the sliding groove (63) and is slidably arranged on the surface of the rotating shaft (64), the rotating shaft (64) rotates on the inner wall of the sliding groove (63), the guide groove (65) is spirally arranged on the surface of the rotating shaft (64), and the guide block (66) is fixed on the inner wall of the traction block (62) and is connected with the guide groove (65) in a matched mode.

When the rotating shaft (64) rotates, the traction block (62) is driven to linearly move in the sliding groove (63) through the cooperation of the guide groove (65) and the guide block (66), so that the traction block (62) drives the push plate (61) to synchronously move, and foundation soil driven by the scraping plate (43) is pushed to a direction far away from a cutting ring through the pushing cooperation reciprocating structure (7) of the push plate (61).

4. A roadbed layer solidity detection sampler according to claim 3, characterized in that: the reciprocating structure (7) comprises a torsion spring (71), a first gear (72), a groove (73) and gear teeth (74), wherein the first gear (72) is fixed at one end of the rotating shaft (64) and rotates in the scraper (43), the groove (73) is formed in the bottom of the base (1), the gear teeth (74) are arranged in the groove (73) and are connected with the first gear (72) in a matched mode, and the torsion spring (71) is fixed between the first gear (72) and the sliding groove (63) and sleeved on the surface of the rotating shaft (64);

the scraper blade (43) can drive the first gear (72) to rotate on the surface of the gear teeth (74) when rotating, at the moment, the first gear (72) drives the rotating shaft (64) to rotate in the traction block (62) and simultaneously enables the torsion spring (71) to deform and store energy, and when the first gear (72) rotates to an area in the groove (73) where the gear teeth (74) are not arranged, the torsion spring (71) releases energy to drive the rotating shaft (64) to reversely rotate, so that reciprocating movement of the push plate (61) is achieved.

5. The roadbed layer solidity detection sampler according to claim 1, wherein: the positioning mechanism (5) comprises a motor (51), a driving shaft (52), a sleeve (53), a fixed foot (54) and a second gear (55), wherein the motor (51) is arranged between the base (1) and the bracket (2) and is in spline connection with the driving shaft (52), one end of the driving shaft (52) rotates on the surface of the base (1), the other end of the driving shaft (52) is connected with the sleeve (53) capable of vertically and reciprocally moving, the second gear (55) is fixed on the surface of the sleeve (53), and the fixed foot (54) is arranged at the bottom of the sleeve (53);

the motor (51) drives the sleeve (53) to rotate through the driving shaft (52), and the sleeve (53) drives the fixing feet (54) to rotate, so that the fixing feet (54) gradually extend towards the inside of the roadbed layer, and the whole fixing is realized until the bottom of the base (1) is in contact with the roadbed layer.

6. The roadbed layer solidity detection sampler according to claim 5, wherein: the ring cutter sampling mechanism (3) comprises an air cylinder (31), an extrusion block (32), a protection cylinder (33), a connecting plate (34), a guide rod (35), a push rod (36), a connecting arm (37), a partition plate (38) and a circular frame (39), wherein the air cylinder (31) is arranged at the top of the bracket (2), the extrusion block (32) is fixed at the output end of the air cylinder (31), a plurality of guide rods (35) are fixed at the top of the extrusion block (32) through the connecting plate (34), and one end of each guide rod (35) is elastically and movably provided with the push rod (36) through a first spring (8);

the connecting arm (37) is fixed on the surface of the sleeve (53) and is movably connected to the surface of the base (1), the top end of the connecting arm (37) is elastically and movably connected with the base (1) through the second spring (9), the round frame (39) is fixed at the bottoms of the push rods (36), the protective cylinder (33) is concentrically arranged in the round frame (39), the partition plate (38) is fixed inside the protective cylinder (33) and divides the protective cylinder (33) into a sampling cavity (331) and an extrusion cavity (332), and the elastic coefficient of the first spring (8) is larger than that of the second spring (9).

7. The roadbed layer solidity detection sampler according to claim 6, wherein: the surface of drive shaft (52) is provided with guide part (10), the inner wall of sleeve (53) is provided with track (11) with guide part (10) complex, the inner wall of sleeve (53) is fixed with gag lever post (12), the inside of drive shaft (52) is provided with limit chamber (13) with gag lever post (12) complex.

8. A sampling method based on the roadbed layer solidity detection sampler according to any one of claims 1 to 7, characterized in that it comprises the following steps:

s1, integrally positioning, namely firstly placing a base (1) on a roadbed layer, placing a cutting ring into a sampling cavity (331), then starting a motor (51), driving a driving shaft (52) to rotate by the motor (51), driving a sleeve (53) to rotate by the driving shaft (52) through the matching between a guide part (10) and a track (11), driving a fixing foot (54) to rotate by the sleeve (53), and gradually fixing the whole body by the fixing foot (54) when rotating, wherein as the four fixing feet (54) are controlled by four independent motors (51), each fixing foot (54) can work independently, so that the base (1) can be horizontally and stably contacted with the roadbed layer to facilitate the sampling of the cutting ring;

s2, sampling a roadbed layer, starting an air cylinder (31), wherein the air cylinder (31) drives an extrusion block (32) to move downwards, and the extrusion block (32) can drive a circular frame (39) to move synchronously through a connecting plate (34), a guide rod (35) and a push rod (36) when moving downwards, so that a protection cylinder (33) is driven to move downwards synchronously through the circular frame (39), and the protection cylinder (33) drives a cutting ring to move downwards horizontally, and at the moment, the extrusion block (32) can drive the cutting ring to cut the roadbed layer to sample through a partition plate (38) in an extrusion cavity (332);

s3, foundation soil is cleaned, when the extrusion block (32) pushes the ring cutter to sample, the circular frame (39) can extrude the connecting arm (37), and as the elastic coefficient of the first spring (8) is larger than that of the second spring (9), the second spring (9) is deformed firstly, the connecting arm (37) drives the second gear (55) to move downwards through the sleeve (53) and is matched with the outer gear ring (41), at the moment, the second gear (55) can drive the outer gear ring (41) to rotate, and the outer gear ring (41) drives the scraper (43) to rotate at the bottom of the base (1) through the connecting rod (42) when rotating, so that foundation soil around the ring cutter is cleaned.