Roadbed compactness detection device

Abstract

The utility model discloses a roadbed compactness detection device, which belongs to the technical field of road detection and comprises an equipment main body, and a detection mechanism and a locking component are mounted on the equipment main body. The detection mechanism comprises a drilling assembly and a sand filling assembly, and the drilling assembly and the sand filling assembly are both installed on the top of the equipment body. By means of the mode, the effect of preventing equipment from moving in the drilling process is achieved through the locking assembly, sand in a barrel is pressed tightly through the sand filling assembly in the sand filling process, and the accuracy of a detection result is improved.

Description

Technical Field

[0001] This utility model relates to the field of road inspection technology, specifically to a roadbed compaction testing device. Background Technology

[0002] Subgrade compaction degree refers to the ratio of the dry density of compacted soil or other road construction materials to the standard maximum dry density, expressed as a percentage. Subgrade compaction degree is one of the key indicators for quality inspection of subgrade and pavement construction, characterizing the density status after on-site compaction. Higher compaction degree means greater density and better overall material performance. Subgrade compaction degree is a quality control indicator for earthwork projects. First, a soil sample before compaction is sent to the laboratory to determine its dry density at its optimum moisture content; this is the maximum dry density of the sample. Then, a sample after compaction is taken to determine its actual dry density. Dividing the actual dry density by the maximum dry density gives the actual compaction degree of the soil. Comparing this number with the compaction degree specified in the standard allows us to determine whether the soil compaction degree has met the quality standard.

[0003] For example, Chinese patent CN217758682U discloses a soil-rock mixed fill roadbed compaction testing device, including a support base, a drilling rig and a drill bit. The support base has support columns fixed at the four corners of its bottom. Through the rotatable design of the rotating base plate, after the drilling rig and drill bit have completed drilling, the sand outlet can be rotated to the top of the hole. Opening the sand outlet allows the sand inside the sand storage box to be discharged into the hole. When performing sand filling testing, the support base needs to be moved to perform sand filling.

[0004] However, the technology has the following problems: when the fill material is uneven, the test results will be biased and the compaction degree of the roadbed cannot be accurately measured.

[0005] Based on this, this utility model designs a roadbed compaction degree detection device to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a roadbed compaction degree detection device.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A roadbed compaction testing device includes a main body, on which a testing mechanism and a locking component are installed;

[0009] The testing mechanism includes a drilling assembly and a sand-filling assembly, both of which are installed on the top of the main body of the equipment.

[0010] Furthermore, the main body of the device includes a trolley body, a handrail, a first through hole, a second through hole, and a square groove. The top left side of the trolley body is fixedly connected to the bottom of the handrail. The top center of the trolley body has a first through hole and a second through hole. The top center of the trolley body, near the second through hole, has a square groove. The first through hole is located to the left of the second through hole, and the square groove communicates with the second through hole and is located in front of the second through hole.

[0011] Furthermore, the drilling assembly, sand filling assembly, and locking assembly are all installed on the trolley body, the handrail is connected to the locking assembly, and the second through hole and square groove are connected to the sand filling assembly.

[0012] Furthermore, the drilling assembly includes a linear module slide, a slide bar, a crossbar, a rotary drilling rig, and a gravity sensor. The linear module slide is fixedly installed on the left front end of the top of the trolley body, the slide bar is fixedly installed on the left rear end of the trolley body, the output end of the linear module slide is fixedly connected to the front end of the crossbar, the rear end of the crossbar is slidably connected to the front side of the slide bar, the gravity sensor is fixedly installed at the bottom middle of the crossbar, and the rotary drilling rig is fixedly installed at the sensing end of the gravity sensor.

[0013] Furthermore, the sand-filling assembly includes a mounting plate, an electric cylinder, a sand bucket, a pressing plate, a convex plate, a motor, a threaded rod, a threaded block, and a push-pull cover. The mounting plate is fixedly installed on the right side of the trolley body and is located above the second through hole. The electric cylinder is fixedly installed on the top of the mounting plate, with its output end vertically sliding through the top of the mounting plate and fixedly connected to the pressing plate. The sand bucket is slidably connected within the second through hole, and the pressing plate is slidably connected within the sand bucket. The convex plate is fixedly installed on the inner side of the front end of the mounting plate. The motor is fixedly installed on the bottom of the convex plate, with its output end vertically downward and fixedly connected to the top of the threaded rod. The bottom of the threaded rod is inserted into the square groove and rotatably connected to the inner bottom wall of the square groove. One end of the threaded block is fixedly connected to the sand bucket, and the other end of the threaded block is threadedly connected to the threaded rod. The threaded block is slidably connected within the square groove. One end of the push-pull cover slides through the bottom side wall of the sand bucket and extends into the interior of the sand bucket, and the push-pull cover is slidably connected to the sand bucket.

[0014] Furthermore, the diameter of the borehole of the rotary drilling rig is equal to the diameter of the sand bucket.

[0015] Furthermore, the locking assembly includes a pressure rod, a spring, a rotating rod, a connecting rod, a slot, and a locking ring. Through holes are provided on both sides of the top left side of the trolley body. The bottoms of the two pressure rods are inserted into the two through holes and slidably connected. A spring is fitted on the outer side of the bottom of each pressure rod. One end of the spring is fixedly connected to the top of the trolley body, and the other end of the spring is fixedly connected to the bottom side wall of the pressure rod. Connecting rods are fixedly connected to the bottom of both sides of the handrail. A rotating rod is rotatably connected to the bottom of each connecting rod, and the bottom of the connecting rod is rotatably connected to the middle of the rotating rod. The right sides of the two rotating rods are respectively in contact with the tops of the two pressure rods. A slot is provided on the bottom left side of each rotating rod. Locking rings are slidably fitted on the outer sides of both ends of the handrail, and the slots can engage with the locking rings.

[0016] Furthermore, the bottom of the pressure bar is tapered.

[0017] Compared with the prior art, the advantages of this utility model are as follows:

[0018] In use, the main body of the device is moved to the testing location, the locking component is used to fix the main body of the device, the drilling component drills a hole in the foundation to be tested, and after the drilling component finishes drilling, the sand filling component is aligned with the hole and sand is poured into the hole to test the compaction degree of the roadbed.

[0019] This invention prevents equipment from moving during drilling by using a locking component, and compresses the sand inside the bucket during the sand filling process, thereby improving the accuracy of the test results. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This utility model provides a three-dimensional roadbed compaction testing device. Figure 1 ;

[0022] Figure 2 This is a front view of a roadbed compaction testing device according to the present invention;

[0023] Figure 3 This utility model provides a three-dimensional roadbed compaction testing device. Figure 2 ;

[0024] Figure 4 This utility model provides a three-dimensional roadbed compaction testing device. Figure 3 ;

[0025] Figure 5 For along Figure 2 A sectional view along the AA direction;

[0026] Figure 6 This is a perspective view of the sand bucket of this utility model.

[0027] The labels in the diagram represent:

[0028] 1. Equipment body 11. Trolley body 12. Handrail 13. First through hole 14. Second through hole 15. Square groove 2. Detection mechanism 21. Drilling assembly 211. Linear module slide 212. Slide rod 213. Crossbar 214. Rotary drilling rig 215. Gravity sensor 22. Sand filling assembly 221. Mounting plate 222. Electric cylinder 223. Sand bucket 224. Pressing plate 225. Protruding plate 226. Motor 227. Threaded rod 228. Threaded block 229. Push-pull cover 3. Locking assembly 31. Pressure rod 32. Spring 33. Rotating rod 34. Connecting rod 35. Groove 36. Locking ring. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0031] Example 1

[0032] In some embodiments, please refer to the appendix to the instruction manual. Figure 1-6 A roadbed compaction testing device includes a main body 1, a testing mechanism 2 and a locking component 3 installed on the main body 1. The testing mechanism 2 includes a drilling component 21 and a sand filling component 22, both of which are installed on the top of the main body 1.

[0033] In use, the main body 1 of the device is moved to the testing location, the locking component 3 is used to fix the main body 1 of the device, the drilling component 21 drills a hole in the foundation to be tested, after the drilling component 21 has finished drilling, the sand filling component 22 is aligned with the hole, and the sand filling component 22 fills sand into the hole to test the compaction degree of the roadbed.

[0034] This invention prevents equipment from moving during drilling and compresses the sand inside the bucket during sand filling, thereby improving the accuracy of test results.

[0035] Example 2

[0036] In some embodiments, such as Figure 1-6 As shown, in a preferred embodiment of the present invention, the main body 1 of the device includes a trolley body 11, a handrail 12, a first through hole 13, a second through hole 14, and a square groove 15. The top left side of the trolley body 11 is fixedly connected to the bottom of the handrail 12. The first through hole 13 and the second through hole 14 are provided in the top middle of the trolley body 11. The square groove 15 is provided in the top middle of the trolley body 11 and near the second through hole 14. The first through hole 13 is located to the left of the second through hole 14. The square groove 15 communicates with the second through hole 14 and is located in front of the second through hole 14.

[0037] Among them, the drilling component 21, the sand filling component 22, and the locking component 3 are all installed on the trolley body 11, the handrail 12 is connected to the locking component 3, and the second through hole 14 and the square groove 15 are both connected to the sand filling component 22.

[0038] The drilling assembly 21 includes a linear module slide 211, a slide bar 212, a crossbar 213, a rotary drilling rig 214, and a gravity sensor 215. The linear module slide 211 is fixedly installed on the left front end of the top of the trolley body 11, and the slide bar 212 is fixedly installed on the left rear end of the trolley body 11. The linear module slide 211 and the slide bar 212 are arranged opposite to each other. The crossbar 213 is disposed between the linear module slide 211 and the slide bar 212. The output end of the linear module slide 211 is fixedly connected to the front end of the crossbar 213, and the rear end of the crossbar 213 is slidably connected to the front side of the slide bar 212. The gravity sensor 215 is fixedly installed at the bottom middle part of the crossbar 213, and the rotary drilling rig 214 is fixedly installed at the sensing end of the gravity sensor 215. The rotary drilling rig 214 adopts a conventional and mature structure in the art.

[0039] The sand-filling assembly 22 includes a mounting plate 221, an electric cylinder 222, a sand bucket 223, a pressing plate 224, a protruding plate 225, a motor 226, a threaded rod 227, a threaded block 228, and a push-pull cover 229. The mounting plate 221 is fixedly installed on the right side of the trolley body 11 and is located above the second through hole 14. The electric cylinder 222 is fixedly installed on the top of the mounting plate 221, with its output end vertically sliding through the top of the mounting plate 221 and fixedly connected to the pressing plate 224. The sand bucket 223 is slidably connected within the second through hole 14, and the pressing plate 224 is slidably connected within the sand bucket 223. The protruding plate 226... 5. The motor 226 is fixedly installed on the inner side of the front end of the mounting plate 221. The output end of the motor 226 is fixedly connected to the top of the threaded rod 227. The bottom of the threaded rod 227 is inserted into the square groove 15 and rotatably connected to the inner bottom wall of the square groove 15. One end of the threaded block 228 is fixedly connected to the sand bucket 223. The other end of the threaded block 228 is threadedly connected to the threaded rod 227. The threaded block 228 is set in the square groove 15 for limiting and sliding connection. One end of the push-pull cover 229 slides through the bottom side wall of the sand bucket 223 and extends into the interior of the sand bucket 223. The push-pull cover 229 is slidably connected to the sand bucket 223. The drilling diameter of the rotary drilling rig 214 is equal to the diameter of the sand bucket 223.

[0040] The trolley body 11 is pushed to a suitable position by pushing the handle 12, and then the trolley body 11 is fixed by the locking component 3. Then the linear module slide 211 is started, the gravity sensor 215 records the mass of the rotary drilling rig 214, the output end of the linear module slide 211 drives the crossbar 213 to move downward, the crossbar 213 drives the rotary drilling rig 214 to move downward, and then the crossbar 213 drives the rotary drilling rig 214 to move downward through the first through hole 13 to drill the roadbed surface. After the rotary drilling rig 214 finishes drilling, the linear module slide 211 drives the crossbar 213 to drive the rotary drilling rig 214 to rise. At this time, the gravity sensor 215 measures the total mass of the rotary drilling rig 214 and the soil inside. The mass of the soil is equal to the total mass of the rotary drilling rig 214 and the soil inside minus the mass of the rotary drilling rig 214. Then the worker checks the water content of the soil inside the rotary drilling rig 214.

[0041] Then, locking component 3 unlocks the trolley body 11, pushes the trolley body 11, aligns the second through hole 14 with the hole, and then locks the trolley body 11 back in place using locking component 3; then, the sand bucket 223 is filled with the weighed sand, and the electric cylinder 222 is activated. The output end of the electric cylinder 222 drives the pressing plate 224 to move downward, and the pressing plate 224 compacts the sand in the sand bucket 223, thus achieving the effect of pressing the sand evenly and making the test results more accurate;

[0042] Then the motor 226 starts, driving the threaded rod 227 to rotate. The threaded rod 227 drives the threaded block 228 to move downwards, and the threaded block 228 drives the sand bucket 223 to move downwards until the bottom of the sand bucket 223 contacts the ground, at which point the motor 226 stops. Then, the push-pull cover 229 is pulled by hand, and the sand enters the hole from the sand bucket 223. After the hole is filled, the bottom of the sand bucket 223 is closed using the push-pull cover 229.

[0043] The mass of sand in the cavity is equal to the mass of sand when it was filled into the bucket minus the mass of sand remaining in the bucket after filling. The wet density of the subgrade soil can be calculated by dividing the total mass of excavated soil by the mass of sand in the cavity and then multiplying by the density of standard sand. The dry density is equal to wet density / 1 + 0.01 * water content. The compaction degree is equal to the dry density of the soil / maximum dry density of the soil * 100%. The compaction degree of the subgrade can be calculated from this.

[0044] Example 3

[0045] In some embodiments, such as Figure 1-6 As shown, in a preferred embodiment of this utility model, the locking assembly 3 includes a pressure rod 31, a spring 32, a rotating rod 33, a connecting rod 34, a slot 35, and a locking ring 36. Through holes are provided on both sides of the top left side of the trolley body 11. The bottoms of the two pressure rods 31 are inserted into the two through holes and slidably connected. A spring 32 is sleeved on the outer side of the bottom of each pressure rod 31. One end of the spring 32 is fixedly connected to the top of the trolley body 11, and the other end of the spring 32 is fixedly connected to the bottom side wall of the pressure rod 31. Connecting rods 34 are fixedly connected to the bottom of both sides of the handrail 12. A rotating rod 33 is rotatably connected to the bottom of each connecting rod 34, and the bottom of the connecting rod 34 is rotatably connected to the middle of the rotating rod 33. The right sides of the two rotating rods 33 are respectively in contact with the tops of the two pressure rods 31. A slot 35 is provided on the bottom left side of each rotating rod 33. Locking rings 36 are slidably sleeved on the outer sides of both ends of the handrail 12, and the slots 35 can engage with the locking rings 36. The bottom of the pressure rod 31 is conical, making it easy to insert into the soil.

[0046] When the trolley body 11 is moved to the appropriate position, the worker lifts the left side of the rotating rod 33 upwards. At this time, the rotating rod 33 rotates around the bottom of the connecting rod 34, and the right side of the rotating rod 33 will press down on the pressure rod 31, causing the bottom of the pressure rod 31 to insert into the soil. Then, the locking ring 36 is moved to the slot 35, so that the locking ring 36 engages with the slot 35, thereby locking the rotating rod 33 and fixing the trolley. Moreover, the locking ring 36 can only engage in the slot 35 after the left side of the rotating rod 33 is lifted upwards, thus preventing the left side of the rotating rod 33 from moving downwards.

[0047] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for detecting the degree of compaction of a roadbed, comprising a device body (1), characterized in that: The main body (1) of the equipment is equipped with a detection mechanism (2) and a locking component (3); The detection mechanism (2) includes a drilling assembly (21) and a sand filling assembly (22), both of which are installed on the top of the main body (1). The main body of the equipment (1) includes a trolley body (11), a handrail (12), a first through hole (13), a second through hole (14), and a square groove (15). The top left side of the trolley body (11) is fixedly connected to the bottom of the handrail (12). The top middle of the trolley body (11) is provided with a first through hole (13) and a second through hole (14). The top middle of the trolley body (11) and near the second through hole (14) is provided with a square groove (15). The first through hole (13) is located to the left of the second through hole (14). The square groove (15) is connected to the second through hole (14) and is located in front of the second through hole (14). The drilling assembly (21), sand filling assembly (22) and locking assembly (3) are all installed on the trolley body (11), the handrail (12) is connected to the locking assembly (3), and the second through hole (14) and square groove (15) are both connected to the sand filling assembly (22); The drilling assembly (21) includes a linear module slide (211), a slide bar (212), a crossbar (213), a rotary drilling rig (214), and a gravity sensor (215). The linear module slide (211) is fixedly installed on the left front end of the top of the trolley body (11), the slide bar (212) is fixedly installed on the left rear end of the trolley body (11), the output end of the linear module slide (211) is fixedly connected to the front end of the crossbar (213), the rear end of the crossbar (213) is slidably connected to the front side of the slide bar (212), the gravity sensor (215) is fixedly installed at the bottom middle part of the crossbar (213), and the rotary drilling rig (214) is fixedly installed at the sensing end of the gravity sensor (215). The sand-filling assembly (22) includes a mounting plate (221), an electric cylinder (222), a sand bucket (223), a pressing plate (224), a protruding plate (225), a motor (226), a threaded rod (227), a threaded block (228), and a push-pull cover (229). The mounting plate (221) is fixedly installed on the right side of the trolley body (11), and the mounting plate (221) is located above the second through hole (14). The electric cylinder (222) is fixedly installed on the top of the mounting plate (221). The output end of the electric cylinder (222) slides vertically through the top of the mounting plate (221) and is fixedly connected to the pressing plate (224). The sand bucket (223) is slidably connected inside the second through hole (14). The pressing plate (224) is slidably connected inside the sand bucket (223). The protruding plate (225) 225) is fixedly installed on the inner side of the front end of the mounting plate (221). The motor (226) is fixedly installed on the bottom of the convex plate (225). The output end of the motor (226) is vertically downward and fixedly connected to the top of the threaded rod (227). The bottom of the threaded rod (227) is inserted into the square groove (15) and rotatably connected to the inner bottom wall of the square groove (15). One end of the threaded block (228) is fixedly connected to the sand bucket (223). The other end of the threaded block (228) is threadedly connected to the threaded rod (227). The threaded block (228) is set in the square groove (15) for limiting sliding connection. One end of the push-pull cover (229) slides through the bottom side wall of the sand bucket (223) and extends into the interior of the sand bucket (223). The push-pull cover (229) is slidably connected to the sand bucket (223). The diameter of the borehole of the rotary drilling rig (214) is equal to the diameter of the sand bucket (223); The locking assembly (3) includes a pressure rod (31), a spring (32), a rotating rod (33), a connecting rod (34), a slot (35), and a locking ring (36). Through holes are provided on both sides of the top left side of the trolley body (11). The bottoms of the two pressure rods (31) are inserted into the two through holes and slidably connected. A spring (32) is fitted on the outer side of the bottom of each pressure rod (31). One end of the spring (32) is fixedly connected to the top of the trolley body (11), and the other end of the spring (32) is fixedly connected to the bottom side wall of the pressure rod (31). Fixed connection, both sides of the bottom of the handrail (12) are fixedly connected to the connecting rod (34), the bottom of each connecting rod (34) is rotatably connected to the rotating rod (33), and the bottom of the connecting rod (34) is rotatably connected to the middle of the rotating rod (33). The right side of the two rotating rods (33) is respectively in contact with the top of the two pressure rods (31). The bottom left side of each rotating rod (33) is provided with a slot (35). The outer sides of both ends of the handrail (12) are slidably fitted with locking rings (36), and the slots (35) can be engaged with the locking rings (36). The bottom of the pressure bar (31) is conical.

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