A roadbed compaction testing device for highway engineering

Abstract

The present invention discloses a roadbed compaction detection device for highway engineering, including a fixed plate and a positioning component, a sampling component and a collecting component, wherein the upper surface of the fixed plate is fixedly connected with a fixing frame, one side of the top of the fixing frame and the same side of the fixed plate are fixedly connected with an extension plate, and both sides of the lower surface of the fixed plate are fixedly connected with a fixing seat, and a locking groove is provided inside the fixing seat. The present invention provides a sampling component, while sampling the roadbed, does not destroy the density of the sampled soil, and controls the sampling amount to be the same each time; provides a positioning component, automatically fixes the device while sampling, and automatically extends out at the end of sampling to meet the walking requirements of the device; provides a collecting component, automatically squeezes and collects the sampled soil after sampling, and does not interfere with the movement of the sampling component, and can take the sampled soil sample at any time.

Description

Technical Field

[0001] The invention relates to the technical field of road engineering detection equipment, in particular to a roadbed compaction detection device for highway engineering. Background Art

[0002] Highway engineering subgrade compaction testing equipment is a device used to detect and evaluate the compaction of the subgrade during highway construction. The compaction of the subgrade is one of the key indicators affecting the quality of highway engineering, which is directly related to the bearing capacity, stability and service life of the subgrade. The role of the compaction testing equipment is to ensure that the construction quality of the subgrade meets the design requirements by conducting real-time and accurate testing of the density of the subgrade material.

[0003] After searching, the Chinese patent with publication number CN113250609B, through the method of connecting the push rod on the drill bit, when the drill bit is lowered, the push rod pushes the rotating block to rotate, so that the wheel body is separated from the roadbed surface, the side of the rotating block contacts the roadbed surface, the rotating block forms support for the detection equipment, the contact area between the detection equipment and the ground is increased, the stability is greatly improved, and there is no need to use additional fixing devices or hand-held methods, which can avoid the problem of additional damage to the roadbed surface caused by the drill bit or the fixed anchor, and the accuracy of drilling is improved. By setting a sleeve and opening a sealed accordion cover on the sleeve, it can play a guiding role for the sliding rod, and the peripheral side of the spiral receiving plate on the drill bit is close to the inner wall of the sleeve but not in contact, ensuring that after the drill bit is lowered, when the drill bit is lifted, the sample can enter the sleeve, and then the drill bit can be rotated to send the sample to the collection drying box for detection in layers, which can improve the accuracy of the detection.

[0004] However, in the process of sampling the roadbed through a drill bit in the above-mentioned patent, the drill bit will damage the density of the roadbed material, resulting in deviations in the quality of soil samples during multiple sampling processes. At this time, the density of the collected soil samples is not representative; on the other hand, during the sampling process, when the soil samples are collected in the sleeve, even if they are introduced into the collection and drying box through a scraper, a part of the soil sample will still remain in the sleeve, which will cause errors in the subsequent dry density test results. Summary of the invention

[0005] The purpose of the present invention is to provide a highway engineering roadbed compaction detection device, which has the advantages of multi-point sampling and classified collection, and solves the problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a roadbed compaction detection device for highway engineering, comprising a fixed plate and a positioning component inside the fixed plate, a sampling component arranged just above the fixed plate, and a collecting component arranged on one side of the fixed plate, wherein the upper surface of the fixed plate is fixedly connected with a fixed frame, one side of the top of the fixed frame and the same side of the fixed plate are fixedly connected with an extension plate, both sides of the lower surface of the fixed plate are fixedly connected with a fixed seat, a locking groove for the positioning component to be extended and retracted is provided inside the fixed seat, a telescopic rod is fixedly connected to the lower surface of the extension plate located at the position of the fixed frame, a limiting ring is fixedly connected to the bottom end of the telescopic rod, and a guide block is fixedly connected to the position of the limiting ring near the telescopic rod;

[0007] The sampling assembly includes a drilling mechanism for achieving roadbed destruction and an opening and closing mechanism for completing soil sample collection. The drilling mechanism passes through and is screwed to the middle section of the fixing frame. The opening and closing mechanism is located inside the drilling mechanism and is intermittently transmission-connected to the positioning assembly and the collecting assembly respectively.

[0008] Preferably, the positioning assembly includes a transmission gear ring that penetrates and is limitedly rotatably connected to the center of the fixed plate to realize intermittent transmission connection with the drilling mechanism, the outer contours on both sides of the transmission gear ring are meshed and transmission-connected with transmission wheels, and the transmission wheel also penetrates and is rotationally connected to the inside of the fixed plate, the axis of the transmission wheel is threaded with a threaded shaft, and the threaded shaft penetrates and is rotationally connected to the fixed plate, the bottom end of the threaded shaft is fixedly connected to a positioning plate, and the positioning plate is slidingly connected to the inner contour of a locking groove of a fixed seat by a spline limiting lifting, the lower surface of the positioning plate is penetrated and limitedly rotatably connected with a steering wheel, and the size of the steering wheel corresponds to the opening size of the locking groove of the fixed seat, and the bottom end of the steering wheel is rotationally connected to a traveling wheel by a connecting rod.

[0009] Preferably, the drilling mechanism includes a fixed shaft fixedly connected to the lower surface of the middle section of the top end of the fixed frame, the bottom end of the fixed shaft is fixedly connected to a push plate, the outer contour of the fixed shaft is sleeved with a threaded sleeve driven by a motor, and the threaded sleeve passes through and is screwed to the middle section of the fixed frame, the bottom end of the threaded sleeve is fixedly connected to a material storage barrel, and the material storage barrel is sleeved on the outer contour of the push plate, the bottom end of the material storage barrel is limitedly rotatably connected to a cone head for completing the roadbed breaking operation, and an offset groove is provided on the side of the outer contour of the bottom end of the material storage barrel close to the collecting component.

[0010] Preferably, the opening and closing mechanism includes an inner gear ring which is limitedly rotatably connected to the inner contour of the bottom end of the storage barrel, and the bottom end of the inner gear ring is fixedly connected to the cone head, an outer gear rack is fixedly connected to the outer contour of the inner gear ring, and the ratio of the length of the outer gear rack to the opening length of the offset groove is one to two, a plurality of inner gears which are equally spaced and distributed are meshed and transmission-connected on the inner contour of the inner gear ring, a locating pin passes through and is fixedly connected to the axis of the inner gear, the locating pin passes through and is limitedly rotatably connected to the storage barrel, a plurality of opening and closing plates are fixedly connected to the outer contour of the bottom end of the locating pin, and the plurality of opening and closing plates are assembled together into a regular hexagonal plate.

[0011] Preferably, the arc center angle of the outer rack on the inner gear ring is consistent with the angle between two adjacent positioning pins.

[0012] Preferably, the collecting assembly includes a positioning roller that passes through and is limitedly rotatably connected between the two extension plates, the top end of the positioning roller is fixedly connected with a pitch tooth, and the pitch teeth are distributed around the positioning roller at equal intervals, the extension plate located at the fixed frame position and passed through by the positioning roller is provided with a pitch groove on the inner contour, and the pitch groove and the pitch teeth correspond to each other, a guide ring is fixedly connected to the outer contour of the middle section of the positioning roller, a synchronous wheel is fixedly connected to the outer contour of the positioning roller near the middle section, and the synchronous wheel is intermittently meshed and transmission-connected with the outer rack, a plurality of collecting barrels distributed around at equal intervals are fixedly connected to the outer contour of the bottom end of the positioning roller through a connecting rod, and the capacity of the collecting barrel is the same as the volume of the part inside the storage barrel between the pushing plate and the opening and closing plate.

[0013] Preferably, the guide ring is composed of a plurality of inclined plates fixedly connected to the outer contour of the positioning roller by connecting rods, distributed in an annular manner with equal intervals and staggered up and down, and a guide groove is provided between two adjacent inclined plates of the guide ring and the guide groove corresponds to the size of the guide block.

[0014] Preferably, the number of pitch teeth, guide ring inclined plates and positioning pins are the same and the number of collecting barrels is half of the positioning pins. The pitch teeth and guide ring inclined plates are staggered and the staggered angle is half of the pitch tooth size angle.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention provides a sampling assembly to sample the roadbed without destroying the density of the sampled soil, and at the same time controls the sampling volume to be the same each time, thereby reducing the probability of errors in subsequent test results caused by losses and destructive effects generated during the sampling process.

[0017] 2. The present invention sets a positioning component to automatically fix the device while sampling, and automatically extends it at the end of sampling to meet the walking requirements of the device, thereby further reducing the operating difficulty of the device and improving its use efficiency.

[0018] 3. The present invention provides a collection component to automatically squeeze and collect the sampled soil after sampling, while not interfering with the movement of the sampling component. The soil sample after sampling can be taken at any time, further improving the convenience of the equipment to ensure its user experience. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 It is a cross-sectional view of the main structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the connection relationship between the fixing plate and the positioning assembly of the present invention;

[0022] Figure 4 This is an exploded schematic diagram of the positioning assembly structure of the present invention;

[0023] Figure 5 It is a schematic diagram of the connection relationship between the fixing frame and the sampling assembly of the present invention;

[0024] Figure 6 This is an exploded schematic diagram of the sampling assembly structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the connection relationship between the fixing frame and the collecting assembly of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of the collection component of the present invention;

[0027] Fig. 9 It is the overall workflow diagram of the present invention.

[0028] In the figure: 1. fixed plate; 11. fixed frame; 12. extension plate; 13. fixed seat; 14. telescopic rod; 15. limit ring; 16. guide block; 2. transmission gear ring; 21. transmission wheel; 22. threaded shaft; 23. positioning plate; 24. steering wheel; 25. travel wheel; 3. fixed shaft; 31. push plate; 32. threaded sleeve; 33. storage barrel; 34. cone head; 35. offset groove; 4. inner gear ring; 41. outer rack; 42. positioning pin; 43. inner gear; 44. opening and closing plate; 5. positioning roller; 51. pitch tooth; 52. guide ring; 53. synchronous wheel; 54. collecting barrel; 55. guide groove. DETAILED DESCRIPTION

[0029] 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. Embodiment 1:

[0030] See also Figures 1 to 9 The present invention provides a technical solution: a roadbed compaction detection device for highway engineering, comprising a fixed plate 1 and a positioning component inside the fixed plate 1, a sampling component arranged just above the fixed plate 1, and a collecting component arranged on one side of the fixed plate 1, characterized in that: a fixed frame 11 is fixedly connected to the upper surface of the fixed plate 1, an extension plate 12 is fixedly connected to one side of the top of the fixed frame 11 and the same side of the fixed plate 1, a fixed seat 13 is fixedly connected to both sides of the lower surface of the fixed plate 1, a locking groove for the positioning component to be extended and retracted is provided inside the fixed seat 13, a telescopic rod 14 is fixedly connected to the lower surface of the extension plate 12 located at the position of the fixed frame 11, a limiting ring 15 is fixedly connected to the bottom end of the telescopic rod 14, and a guide block 16 is fixedly connected to the position of the outer contour of the limiting ring 15 near the telescopic rod 14;

[0031] The sampling assembly includes a drilling mechanism for achieving roadbed destruction and an opening and closing mechanism for completing soil sample collection. The drilling mechanism passes through and is screwed to the middle section of the fixing frame 11. The opening and closing mechanism is located inside the drilling mechanism and is intermittently transmission-connected to the positioning assembly and the collecting assembly respectively.

[0032] In this device, the fixed plate 1 and the fixed frame 11 together form an overall supporting structure, the extension plate 12 provides limiting fixation for the collecting component, the telescopic rod 14, the limiting ring 15 and the guide block 16 cooperate together to realize the driving operation of the collecting component, and the fixed seat 13 cooperates with the positioning component to realize the equipment locking operation during the sampling process.

[0033] The drilling mechanism completes the breaking of the roadbed, and then the opening and closing mechanism completes the soil sampling operation of the equipment. During the sampling process, the opening and closing mechanism realizes its opening process through the structural cooperation of the collecting component. Further, the opening and closing mechanism drives the positioning component to work synchronously, and the positioning component completes the locking operation of the equipment; then, after the drilling mechanism moves to the lowest end, it rotates in the opposite direction. At this time, the opening and closing mechanism is squeezed by the roadbed soil and the friction force causes it to move relative to the drilling mechanism, and the opening and closing mechanism closes to complete the soil sampling work; during the resetting process of the drilling mechanism and the opening and closing mechanism, the opening and closing mechanism completes the reverse process of the above movement again. At this time, the positioning component releases the lock on the equipment, and the collecting component controls the opening and closing component to open again. Then, under the squeezing of the drilling mechanism, the soil falls into the collecting component to complete the sampling process. Embodiment 2:

[0034] See also Figure 5-Figure 6 This embodiment further illustrates the following on the basis of the first embodiment:

[0035] The drilling mechanism includes a fixed shaft 3 fixedly connected to the lower surface of the middle section of the top end of the fixed frame 11, and the bottom end of the fixed shaft 3 is fixedly connected to a push plate 31. A threaded sleeve 32 driven by a motor is sleeved on the outer contour of the fixed shaft 3, and the threaded sleeve 32 passes through and is screwed to the middle section of the fixed frame 11. A material storage barrel 33 is fixedly connected to the bottom end of the threaded sleeve 32, and the material storage barrel 33 is sleeved on the outer contour of the push plate 31. The bottom end of the material storage barrel 33 is rotationally limited and connected to a cone head 34 for completing the roadbed breaking operation. An offset groove 35 is provided on the side of the outer contour of the bottom end of the material storage barrel 33 close to the collecting component.

[0036] The opening and closing mechanism includes an inner gear ring 4 which is connected to the inner contour of the bottom end of the storage barrel 33 for limited rotation, and the bottom end of the inner gear ring 4 is fixedly connected to the cone head 34, an outer rack 41 is fixedly connected to the outer contour of the inner gear ring 4, and the ratio of the length of the outer rack 41 to the opening length of the offset groove 35 is one to two, a plurality of inner gears 43 which are equally spaced and distributed are meshed and transmission-connected on the inner contour of the inner gear ring 4, a positioning pin 42 passes through and is fixedly connected to the axis of the inner gear 43, the positioning pin 42 passes through and is connected to the storage barrel 33 for limited rotation, a plurality of opening and closing plates 44 are fixedly connected to the outer contour of the bottom end of the positioning pin 42, and the plurality of opening and closing plates 44 are assembled together into a regular hexagonal plate.

[0037] The arc center angle of the outer rack 41 on the inner gear ring 4 is consistent with the angle between two adjacent positioning pins 42 .

[0038] When the equipment is running, the driving motor drives the threaded sleeve 32 to rotate. At this time, under the action of the threaded connection between the threaded sleeve 32 and the middle section of the fixed frame 11, the rotation of the threaded sleeve 32 will cause it to extend downward, and the material storage barrel 33, the cone head 34 and the opening and closing mechanism as a whole will synchronize the threaded sleeve 32 to extend downward. At this time, since the opening and closing mechanism is not subjected to other external forces, the opening and closing mechanism rotates synchronously with the material storage barrel 33 and is in a closed state.

[0039] As the threaded sleeve 32 rotates and extends downward, the limit ring 15 and the guide block 16 move downward synchronously and stretch the telescopic rod 14. At this time, the guide block 16 gradually contacts the positioning assembly and drives the collecting assembly to rotate a fixed angle. While the collecting assembly rotates, it is in a process of meshing with the outer rack 41. Therefore, the collecting assembly drives the outer rack 41 and the inner gear ring 4 to rotate synchronously at a fixed angle. At this time, relative rotation occurs between the outer rack 41 and the storage barrel 33, and the outer rack 41 rotates along the offset groove 35. The outer rack 41 further drives the positioning pin 42 and the inner gear 43 to rotate. The inner gear 43 synchronously drives the opening and closing plates 44 to rotate so that the opening and closing plates 44 open to each other. At this time, the opening and closing mechanism completes its opening process.

[0040] Subsequently, the opening and closing mechanism continues to rotate downward and extend synchronously with the storage barrel 33. When the cone head 34 contacts the roadbed, its cone surface design drives its rotation through the storage barrel 33 to effectively complete the breaking operation of the roadbed. At this time, part of the roadbed soil is collected inside the cone head 34. Since the cone surface of the cone head 34 is set outward, the density of the soil sample collected inside the cone head 34 is not destroyed, thereby further ensuring the sampling quality of the equipment.

[0041] When the threaded sleeve 32 rotates downward and extends to the lowest end, the drilling depth of the roadbed by the cone head 34 reaches the maximum. At this time, the control motor drives the threaded sleeve 32 to rotate in the opposite direction, and the threaded sleeve 32 begins to rotate upward in the opposite direction and shrink. The cone head 34 is squeezed and subjected to the friction of the roadbed soil, resulting in a stroke difference between it and the storage barrel 33. At this time, the cone head 34 drives the inner ring gear 4 to rotate in the opposite direction, and the inner ring gear 4 further drives the positioning pin 42 and the internal gear 43 and finally causes the opening and closing plate 44 to close again. At this time, the opening and closing mechanism is in a closed state, and the sampled soil is stored in the part inside the storage barrel 33 between the push plate 31 and the opening and closing plate 44.

[0042] During the upward reverse rotation and contraction of the threaded sleeve 32, the limit ring 15 and the guide block 16 move upward synchronously to drive the telescopic rod 14 to contract. At this time, the guide block 16 squeezes again and causes the collecting assembly to rotate a fixed angle. The collecting assembly drives the outer rack 41 and the inner gear ring 4 to rotate again. The outer rack 41 rotates along the offset groove 35 again, and the opening and closing mechanism opens again. Then the push plate 31 squeezes the sampled soil inside the storage barrel 33 and causes it to be squeezed downward and stored in the collecting assembly, and the sampling work is completed. Embodiment three:

[0043] See also Figure 3-Figure 4 This embodiment further illustrates the following on the basis of the second embodiment:

[0044] The positioning assembly includes a transmission gear ring 2 that penetrates and is limitedly rotatably connected to the center of the fixed plate 1 to achieve intermittent transmission connection with the drilling mechanism. The outer contours on both sides of the transmission gear ring 2 are meshed and transmission-connected with transmission wheels 21, and the transmission wheel 21 also penetrates and is rotationally connected to the inside of the fixed plate 1. The axis of the transmission wheel 21 is screwed with a threaded shaft 22, and the threaded shaft 22 penetrates and is rotationally connected to the fixed plate 1. The bottom end of the threaded shaft 22 is fixedly connected to a positioning plate 23, and the positioning plate 23 is slidingly connected to the inner contour of the locking groove of the fixed seat 13 through a spline limited lifting, the lower surface of the positioning plate 23 is penetrated and limitedly rotatably connected with a steering wheel 24, and the size of the steering wheel 24 corresponds to the opening size of the locking groove of the fixed seat 13, and the bottom end of the steering wheel 24 is rotationally connected to a traveling wheel 25 through a connecting rod.

[0045] During the rotation and lifting of the threaded sleeve 32, the inner ring gear 4 and the outer rack 41 move synchronously. Further, when the outer rack 41 descends to the point where it engages with the transmission ring gear 2, the threaded sleeve 32 drives the storage barrel 33, the outer rack 41 and the transmission ring gear 2 to rotate synchronously. The transmission ring gear 2 further drives the transmission wheel 21 to rotate. At this time, the transmission wheel 21 has a tendency to drive the threaded shaft 22 to rotate synchronously. Since the threaded shaft 22 is fixedly connected to the positioning plate 23, and the positioning plate 23 is connected to the fixed seat 13 through a spline lifting and sliding connection, the fixed seat 13 and the fixed plate 1 are in a fixed state and cannot rotate, that is, the positioning plate 23 and the threaded shaft 22 cannot rotate. At this time, the rotation of the transmission ring gear 2 causes the threaded shaft 22 to rise and fall synchronously.

[0046] Furthermore, the threaded shaft 22 drives the positioning plate 23, the steering wheel 24 and the traveling wheel 25 to rise and fall synchronously, and the lifting process is opposite to the lifting process of the threaded sleeve 32, that is, when the storage barrel 33 descends along with the threaded sleeve 32, the threaded shaft 22 drives the traveling wheel 25 to rise and is gradually stored in the locking groove of the fixed seat 13. At this time, the bottom end of the fixed seat 13 contacts the ground to realize the locking process of the equipment. When the storage barrel 33 rises along with the threaded sleeve 32, the threaded shaft 22 drives the traveling wheel 25 to descend and extend out of the fixed seat 13. At this time, the traveling wheel 25 contacts the ground. Through the limited rotation connection between the steering wheel 24 and the positioning plate 23, the traveling wheel 25 can drive the equipment to move in any direction. Embodiment 4:

[0047] See also Figure 7-Figure 8 This embodiment further illustrates the following on the basis of the second embodiment:

[0048] The collecting assembly includes a positioning roller 5 that penetrates and is limitedly rotatably connected between two extension plates 12, the top of the positioning roller 5 is fixedly connected with a pitch tooth 51, and the pitch teeth 51 are distributed around the positioning roller 5 at equal intervals, the inner contour of the extension plate 12 located at the position of the fixed frame 11 and penetrated by the positioning roller 5 is provided with a pitch groove, and the pitch groove and the pitch tooth 51 correspond to each other, a guide ring 52 is fixedly connected to the outer contour of the middle section of the positioning roller 5, a synchronous wheel 53 is fixedly connected to the outer contour of the positioning roller 5 near the middle section, and the synchronous wheel 53 is intermittently meshed and transmission-connected with the outer rack 41, a plurality of collecting barrels 54 that are distributed around at equal intervals are fixedly connected to the outer contour of the bottom end of the positioning roller 5 through a connecting rod, and the capacity of the collecting barrel 54 is the same as the volume of the part of the storage barrel 33 located between the pushing plate 31 and the opening and closing plate 44.

[0049] The guide ring 52 is composed of a plurality of inclined plates fixedly connected to the outer contour of the positioning roller 5 by connecting rods, which are evenly spaced and annularly distributed and staggered up and down. A guide groove 55 is provided between two adjacent inclined plates of the guide ring 52, and the guide groove 55 corresponds to the size of the guide block 16.

[0050] The number of the pitch teeth 51, the inclined plate of the guide ring 52 and the positioning pins 42 are all the same, and the number of the collecting barrels 54 is half of the positioning pins 42. The pitch teeth 51 and the inclined plate of the guide ring 52 are staggered, and the staggered angle is half of the size angle of the pitch teeth 51.

[0051] During the rotation and lifting of the threaded sleeve 32, the storage barrel 33 drives the limit ring 15 and the guide block 16 to rise and fall synchronously. At this time, relative movement occurs between the guide block 16 and the inclined plate of the guide ring 52. As the guide block 16 gradually approaches the inclined plate of the guide ring 52, it abuts against the surface of the inclined plate of the guide ring 52 and drives the guide ring 52 and the positioning roller 5 to rotate. When the positioning roller 5 rotates by a fixed angle, the contact between the guide block 16 and the inclined plate of the guide ring 52 is disengaged and extends into the guide groove 55. At this time, the lifting of the guide block 16 can no longer drive the guide ring 52 and the positioning roller 5 to rotate. At the same time, since the inclined plates of the guide ring 52 are all inclined in the same direction, that is, during the lifting and lowering of the threaded sleeve 32, each squeezing contact between the guide block 16 and the inclined plate of the guide ring 52 will cause the positioning roller 5 to rotate in the same direction by a fixed angle.

[0052] Furthermore, while the guide block 16 drives the guide ring 52 and the positioning roller 5 to rotate, the pitch teeth 51 rotate synchronously and disengage from the pitch groove of the extension plate 12. When the guide block 16 extends into the guide groove 55, due to the staggered arrangement between the pitch teeth 51 and the inclined plate of the guide ring 52 and the staggered angle being half of the dimension angle of the pitch teeth 51, the pitch teeth 51 and the pitch groove are not in an adapted position at this time. Therefore, when the guide block 16 disengages from the guide groove 55, the pitch teeth 51 engage with the pitch groove and drive the positioning roller 5 and the guide ring 52 to rotate a fixed angle again. This rotation angle is half of the dimension angle of the pitch teeth 51, thereby ensuring that during each lifting and lowering process of the guide block 16, it will always come into contact with the higher end of the inclined plate of the guide ring 52, thereby ensuring the intermittent rotation stability of the positioning roller 5 during the rotation and lifting process of the threaded sleeve 32.

[0053] It should be noted that when the positioning roller 5 rotates along with the guide ring 52, it drives the synchronous wheel 53 and the collecting barrel 54 to rotate at a fixed angle. Since the storage barrel 33 drives the guide block 16 to rise and fall until it contacts the guide ring 52, the outer rack 41 also contacts and engages with the synchronous wheel 53. At this time, the positioning roller 5 drives the synchronous wheel 53 to rotate, further causing the outer rack 41 and the inner gear ring 4 to rotate and cause relative rotation between them and the storage barrel 33, thereby completing the opening process of the opening and closing mechanism to ensure the smooth progress of the sampling work.

[0054] Furthermore, since the number of collecting barrels 54 is half of the guide ring 52, that is, the collecting barrel 54 rotates with the fixed angle of the positioning roller 5, it will cause the collecting barrel 54 to rotate to a position deviating from the cone head 34 during the descending process of the threaded sleeve 32. At this time, the threaded sleeve 32 descends along the gap between two adjacent collecting barrels 54, that is, the collecting barrel 54 does not interfere with the sampling operation of the sampling assembly on the roadbed; at the same time, when the threaded sleeve 32 rises, the collecting barrel 54 rotates again and rotates to the corresponding position of the cone head 34 to complete the storage of the sampled soil.

[0055] It should be noted that, during the rising process of the threaded sleeve 32, the rotation of the synchronous wheel 53 drives the outer rack 41 and the inner gear ring 4 to rotate synchronously and realizes the opening of the opening and closing mechanism. Along with the further rising of the threaded sleeve 32, the position height of the push plate 31 remains unchanged, that is, at this time, the push plate 31 begins to squeeze the sampled soil between the push plate 31 and the opening and closing plate 44 inside the storage barrel 33, and because the opening and closing plate 44 is in an open state at this time, the sampled soil is squeezed downward into the collecting barrel 54, thereby completing the storage of the sampled soil and at the same time scraping the inner wall of the threaded sleeve 32 to clean the adhering soil on its inner wall.

[0056] 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 roadbed compaction detection device for a highway engineering project, comprising a fixed plate (1) and a positioning component inside the fixed plate (1), a sampling component arranged directly above the fixed plate (1), and a collecting component arranged on one side of the fixed plate (1), characterized in that: The upper surface of the fixing plate (1) is fixedly connected to a fixing frame (11), one side of the top of the fixing frame (11) and the same side of the fixing plate (1) are fixedly connected to an extension plate (12), both sides of the lower surface of the fixing plate (1) are fixedly connected to a fixing seat (13), a locking groove for the positioning assembly to be extended and retracted is provided inside the fixing seat (13), a telescopic rod (14) is fixedly connected to the lower surface of the extension plate (12) located at the position of the fixing frame (11), a limiting ring (15) is fixedly connected to the bottom end of the telescopic rod (14), and a guide block (16) is fixedly connected to the outer contour of the limiting ring (15) at a position close to the telescopic rod (14); The sampling assembly comprises a drilling mechanism for achieving roadbed destruction and an opening and closing mechanism for completing soil sample collection, the drilling mechanism penetrates through and is screwed to the middle section of the fixing frame (11), and the opening and closing mechanism is located inside the drilling mechanism and is intermittently transmission-connected to the positioning assembly and the collecting assembly respectively; The positioning assembly comprises a transmission gear ring (2) which penetrates and is rotationally connected to the center of the fixed plate (1) to realize intermittent transmission connection with the drilling mechanism, the outer contours of both sides of the transmission gear ring (2) are meshed and transmission-connected with transmission wheels (21), and the transmission wheels (21) also penetrate and rotationally connect to the inside of the fixed plate (1), the axis of the transmission wheel (21) is threaded with a threaded shaft (22), and the threaded shaft (22) penetrates and is rotationally connected to the fixed plate (1), the bottom end of the threaded shaft (22) is fixedly connected to a positioning plate (23), and the positioning plate (23) is connected to the fixed plate (1) by a spline limit lifting and sliding connection. The positioning plate (23) is connected to the inner contour of the locking groove of the fixing seat (13); the lower surface of the positioning plate (23) is penetrated and limitedly rotatably connected to a steering wheel (24); the size of the steering wheel (24) corresponds to the opening size of the locking groove of the fixing seat (13); the bottom end of the steering wheel (24) is limitedly rotatably connected to a traveling wheel (25) through a connecting rod; the drilling mechanism comprises a fixed shaft (3) fixedly connected to the lower surface of the middle section of the top end of the fixing frame (11); the bottom end of the fixed shaft (3) is fixedly connected to a push plate (31); the outer contour of the fixed shaft (3) is sleeved with a threaded sleeve (32) driven by a motor and the threaded sleeve (32) is sleeved with a threaded sleeve (32) driven by a motor. The threaded sleeve (32) passes through and is screwed to the middle section of the fixed frame (11); the bottom end of the threaded sleeve (32) is fixedly connected to a material storage barrel (33), and the material storage barrel (33) is sleeved on the outer contour of the push plate (31); the bottom end of the material storage barrel (33) is limitedly rotatably connected to a cone head (34) for completing the roadbed breaking operation; a dislocation groove (35) is provided on the side of the outer contour of the bottom end of the material storage barrel (33) close to the collecting component; the opening and closing mechanism includes an inner gear ring (4) that is limitedly rotatably connected to the inner contour of the bottom end of the material storage barrel (33), and the bottom end of the inner gear ring (4) is fixedly connected to the cone head (34); the An external rack (41) is fixedly connected to the outer contour of the inner gear ring (4), and the ratio of the length of the external rack (41) to the opening length of the offset groove (35) is one to two. A plurality of internal gears (43) distributed around the inner contour of the inner gear ring (4) are meshed and transmission-connected thereto at equal intervals. A positioning pin (42) passes through and is fixedly connected to the axis of the internal gear (43). The positioning pin (42) passes through and is rotationally connected to the storage barrel (33). A plurality of opening and closing plates (44) are fixedly connected to the outer contour of the bottom end of the positioning pin (42), and the plurality of opening and closing plates (44) are assembled together to form a regular hexagonal plate.

2. A highway engineering roadbed compaction detection device according to claim 1, characterized in that: The collecting assembly comprises a positioning roller (5) penetrating and rotatably connected between two extension plates (12); a pitch tooth (51) is fixedly connected to the top of the positioning roller (5), and the pitch teeth (51) are distributed around the positioning roller (5) at equal intervals; a pitch groove is provided on the inner contour of the extension plate (12) at the position of the fixed frame (11) and penetrated by the positioning roller (5), and the pitch groove corresponds to the pitch tooth (51); a guide ring (52) is fixedly connected to the outer contour of the middle section of the positioning roller (5); a synchronous wheel (53) is fixedly connected to the outer contour of the positioning roller (5) near the middle section, and the synchronous wheel (53) is intermittently meshed and transmission-connected with the outer rack (41).

3. A highway engineering roadbed compaction detection device according to claim 2, characterized in that: The arc center angle of the outer gear rack (41) on the inner gear ring (4) is consistent with the included angle between two adjacent positioning pins (42).

4. A highway engineering roadbed compaction detection device according to claim 3, characterized in that: A plurality of collecting cylinders (54) are fixedly connected to the outer contour of the bottom end of the positioning roller (5) via a connecting rod and are distributed around the bottom end at equal intervals. The capacity of the collecting cylinders (54) is the same as the volume of the portion of the storage cylinder (33) located between the pushing plate (31) and the opening and closing plate (44).

5. A highway engineering roadbed compaction detection device according to claim 4, characterized in that: The guide ring (52) is composed of a plurality of inclined plates which are fixedly connected to the outer contour of the positioning roller (5) via connecting rods and are annularly distributed at equal intervals and staggered up and down. A guide groove (55) is provided between two adjacent inclined plates of the guide ring (52), and the guide groove (55) corresponds in size to the guide block (16).

6. A highway engineering roadbed compaction detection device according to claim 5, characterized in that: The number of the pitch teeth (51), the guide ring (52) inclined plate and the positioning pins (42) is the same, and the number of the collecting barrel (54) is half of the positioning pins (42). The pitch teeth (51) and the guide ring (52) inclined plate are staggered, and the staggered angle is half of the size angle of the pitch teeth (51).

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