Road and bridge compactness test detection device

Abstract

The invention discloses a road and bridge compactness test detection device, and relates to the technical field of compactness detection. The rotary pressing assembly is fixed through the supporting frame; the mounting assembly is arranged below the rotary pressing assembly, a sampling barrel is arranged below the mounting assembly, two C-shaped separation blades are fixedly mounted on the inner wall of the lower end of the sampling barrel, a separation assembly is arranged above the C-shaped separation blades, and the separation assembly comprises two first servo motors and two second servo motors. According to the road and bridge compactness test detection device, the pressure sensor is arranged, when the sampling barrel is completely placed into a soil layer, the sampling barrel is completely filled with soil, at the moment, the soil in the sampling barrel extrudes and makes contact with the pressure sensor, a PLC receives a pressure signal and controls a first servo motor and a second servo motor to be started, and the pressure sensor is started; therefore, the bottom of the soil in the sampling barrel is cut.

Description

Technical Field

[0001] The invention relates to the technical field of compaction detection, and in particular to a road and bridge compaction test detection device. Background Art

[0002] Compactness is one of the key indicators for roadbed and pavement construction quality inspection, and is also one of the main control items for roadbed and pavement construction quality inspection. It represents the compaction condition after on-site compaction. The higher the compaction, the greater the density, and the better the overall performance of the material. Compactness is also called compaction coefficient. For roadbed and pavement base: compaction refers to the ratio of the actual dry density achieved on site to the maximum dry density obtained by the indoor standard compaction test, expressed as a percentage.

[0003] After searching, a Chinese patent with the announcement number CN 211043075 U mentioned a road and bridge compaction test detection device, including a U-shaped seat, a through hole is opened on the bottom inner wall of the U-shaped seat, a detection gravity ball is arranged in the through hole, a pointed rod is fixedly connected to the bottom of the detection gravity ball, and the four corners of the bottom of the U-shaped seat are rotatably installed with walking wheels, the top of the detection gravity ball is fixedly connected to a T-shaped rod, and a lifting plate is provided on the sliding sleeve of the T-shaped rod, and the lifting plate sliding sleeve is arranged on the U-shaped seat, and the bottom of the lifting plate and the inner side of the bottom of the T-shaped rod are fixedly connected with the same compression spring. The utility model has a reasonable design and is easy to use. Through the cooperation of the scale and the first pointer, it is convenient to automatically drive the detection gravity ball to rise and apply different sizes of downward rebound force to it for downward smashing detection, and it is convenient to adjust the initial height position of the detection gravity ball according to actual needs, so as to facilitate on-site detection, save time and effort, and be convenient for use.

[0004] The above-mentioned device uses a method of dropping a heavy object to hit the soil layer to observe the degree of depression of the soil layer, and further judges the compaction of the soil by the degree of depression. In actual use, this testing method has a large error and cannot accurately judge the compaction of the soil. Therefore, the above-mentioned device needs to be improved. Summary of the invention

[0005] The purpose of the present invention is to provide a road and bridge compaction test detection device to solve the problems raised in the above background technology.

[0006] To solve the above problems, the technical solutions adopted by the present invention are as follows:

[0007] A road and bridge compaction test detection device, comprising

[0008] Support frame;

[0009] A rotating pressing assembly, wherein the rotating pressing assembly is fixed by a supporting frame;

[0010] An installation component is arranged below the rotating pressing component, a sampling barrel is arranged below the installation component, two C-shaped baffles are fixedly installed on the inner wall of the lower end of the sampling barrel, a separation component is arranged above the C-shaped baffle, the separation component comprises two first servo motors and two second servo motors, a first connecting shaft is fixedly connected to the output end of the first servo motor, a second connecting shaft is fixedly connected to the output end of the second servo motor, a first arc-shaped blade is fixedly installed on the outer wall of the first connecting shaft, and a second arc-shaped blade is fixedly installed on the outer wall of the second connecting shaft;

[0011] Among them, the bottom wall of the sampling tube is provided with two first mounting parts and two second mounting parts, and the adjacent first mounting part and the second mounting part and the other first mounting part and the second mounting part are axially symmetrically arranged, the first servo motor is fixedly arranged on the first mounting part, and the second servo motor is fixedly arranged on the second mounting part. The height of the first mounting part is greater than the height of the second mounting part to ensure that the first arc-shaped blade and the second arc-shaped blade perform staggered cutting.

[0012] Preferably, the support frame includes a base plate, support rods, a top plate and positioning rods, the base plate and the top plate are fixedly connected via a plurality of support rods, and one end of a plurality of positioning rods are fixedly connected to the inner wall of the top plate.

[0013] Preferably, two footrest groove plates are symmetrically and fixedly mounted on the outer wall of the base plate.

[0014] Preferably, the rotating pressing assembly includes an internal threaded barrel, a screw rod and a handle rod, the other ends of several of the positioning rods are fixedly connected to the outer wall of the internal threaded barrel, the screw rod is movably arranged in the internal threaded barrel, and the handle rod is fixedly arranged at the upper end of the screw rod.

[0015] Preferably, the installation assembly includes an insert rod, an insert barrel and a limit rod, the insert rod is fixedly arranged at the lower end of the screw rod, the lower end of the insert barrel is fixedly connected to the upper wall of the sampling barrel, the outer wall of the insert barrel is penetrated by a first hole, and the outer wall of the insert rod is penetrated by a second hole, when the insert rod is plugged and connected with the insert barrel, the limit rod is inserted into the first hole and the second hole for limiting.

[0016] Preferably, a magnetic suction cup is fixedly connected to the inner bottom wall of the sampling tube, and a metal scraper connected to the magnetic suction cup by magnetic adsorption is provided inside the sampling tube.

[0017] Preferably, the metal scraper is made of metal iron.

[0018] Preferably, two guide rods are symmetrically provided on the outer wall of the sampling tube, one side wall of the upper end of the guide rod is fixedly connected to the outer wall of the metal scraper, and the other side wall of the upper end of the guide rod is fixedly connected to a shift block.

[0019] Preferably, a mounting slot is provided on the bottom wall of the metal scraper, a pressure sensor is fixedly installed inside the mounting slot, wire holes are penetrated through the top wall of the sampling tube and the upper wall of the magnetic suction cup, a connecting wire is provided inside the wire hole, and one end of the connecting wire is connected to the pressure sensor.

[0020] Preferably, a PLC controller is fixedly mounted on the end of the handle rod, and the PLC controller is electrically connected to the first servo motor, the second servo motor and the pressure sensor.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention sets a pressure sensor. When the sampling tube is completely inserted into the soil layer, the interior of the sampling tube is completely filled with soil. At this time, the soil inside the sampling tube squeezes and contacts the pressure sensor. Further, the PLC controller receives the pressure signal and controls the start-up of the first servo motor and the second servo motor, thereby cutting the bottom of the soil inside the sampling tube.

[0023] When the personnel of the present invention lifts the sampling tube to above the soil layer by rotating the pressing assembly, in order to further facilitate the removal of the soil inside the sampling tube, the personnel can drive the guide rod and the metal scraper to move downward by pressing the two shifting blocks. At this time, the metal scraper is no longer magnetically adsorbed to the magnetic suction cup, so the soil inside the sampling tube is discharged, making it convenient for the personnel to intuitively observe the compaction condition of the soil in the soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall external structure of a road and bridge compaction test detection device;

[0025] Figure 2 It is an isometric structural schematic diagram of a road and bridge compaction test detection device;

[0026] Figure 3 It is a schematic diagram of the cross-sectional structure of a sampling tube of a road and bridge compaction test detection device;

[0027] Figure 4 It is a partial structural schematic diagram of a road and bridge compaction test detection device;

[0028] Figure 5 It is a partial structural schematic diagram of a road and bridge compaction test detection device;

[0029] Figure 6 A road and bridge compaction test device Figure 4 A partial enlarged view of point A in the middle.

[0030] In the figure: 1. sampling tube; 2. C-type baffle; 3. first servo motor; 4. second servo motor; 5. first connecting shaft; 6. second connecting shaft; 7. first arc-shaped blade; 8. second arc-shaped blade; 9. base plate; 10. support rod; 11. top plate; 12. positioning rod; 13. pedal groove plate; 14. internal threaded tube; 15. screw rod; 16. handle rod; 17. insertion rod; 18. insertion tube; 19. limit rod; 20. magnetic suction cup; 21. metal scraper; 22. guide rod; 23. shift block; 24. pressure sensor; 25. connecting line; 26. PLC controller. DETAILED DESCRIPTION

[0031] 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.

[0032] Embodiment 1:

[0033] See also Figure 1-Figure 6 As shown, the present invention is a road and bridge compaction test detection device, comprising a support frame;

[0034] The rotating pressing assembly is fixed by a supporting frame;

[0035] The mounting assembly is arranged below the rotating pressing assembly, and a sampling barrel 1 is arranged below the mounting assembly. Two C-shaped baffles 2 are fixedly installed on the inner wall of the lower end of the sampling barrel 1. A separation assembly is arranged above the C-shaped baffle 2. The separation assembly includes two first servo motors 3 and two second servo motors 4. The output end of the first servo motor 3 is fixedly connected to a first connecting shaft 5, and the output end of the second servo motor 4 is fixedly connected to a second connecting shaft 6. A first arc-shaped blade 7 is fixedly installed on the outer wall of the first connecting shaft 5, and a second arc-shaped blade 8 is fixedly installed on the outer wall of the second connecting shaft 6;

[0036] Among them, the bottom wall of the sampling tube 1 is provided with two first mounting parts and two second mounting parts, and the adjacent first mounting part and the second mounting part and the other first mounting part and the second mounting part are axially symmetrically arranged. The first servo motor 3 is fixedly arranged on the first mounting part, and the second servo motor 4 is fixedly arranged on the second mounting part. The height of the first mounting part is greater than the height of the second mounting part to ensure that the first arc-shaped blade 7 and the second arc-shaped blade 8 perform staggered cutting.

[0037] The support frame includes a base plate 9 , support rods 10 , a top plate 11 and positioning rods 12 . The base plate 9 and the top plate 11 are fixedly connected via a plurality of support rods 10 , and one end of a plurality of positioning rods 12 are fixedly connected to the inner wall of the top plate 11 .

[0038] Two footrest groove plates 13 are symmetrically and fixedly mounted on the outer wall of the base plate 9 .

[0039] The rotating pressing assembly includes an internal threaded barrel 14 , a screw rod 15 and a handle rod 16 . The other ends of the positioning rods 12 are fixedly connected to the outer wall of the internal threaded barrel 14 . The screw rod 15 is movably arranged in the internal threaded barrel 14 . The handle rod 16 is fixedly arranged at the upper end of the screw rod 15 .

[0040] As can be seen from the above, during use, the inspector places the device above the soil layer to be inspected, and then drives the screw 15 to rotate through the handle 16, and uses the characteristic that the screw 15 is movably arranged in the internal threaded tube 14 to drive the sampling tube 1 to rotate and press down, and further insert the sampling tube 1 into the soil layer. When the personnel observe that the sampling tube 1 is completely inserted into the soil layer, the staff drives the first servo motor 3 and the second servo motor 4, and further the first servo motor 3 and the second servo motor 4 respectively drive the first arc blade 7 and the second arc blade 8 to rotate, and further cut the bottom of the soil inside the sampling tube 1, so that the personnel can separate the soil inside the sampling tube 1 from the soil layer;

[0041] After separation, personnel can measure the compaction of the soil by the sand filling method in the soil pit. Since the soil in the pit is completely separated by the sampling tube 1, personnel do not need to clean the soil in the pit again, which further improves the detection efficiency of personnel.

[0042] Specifically, the installation assembly includes an insertion rod 17, an insertion tube 18 and a limiting rod 19. The insertion rod 17 is fixedly arranged at the lower end of the screw rod 15, and the lower end of the insertion tube 18 is fixedly connected to the upper wall of the sampling tube 1. A first plug hole is penetrated through the outer wall of the insertion tube 18, and a second plug hole is penetrated through the outer wall of the insertion rod 17. When the insertion rod 17 and the insertion tube 18 are plugged together, the limiting rod 19 is inserted into the first plug hole and the second plug hole for limiting.

[0043] As can be seen from the above, the sampling tube 1 can be provided with multiple volume specifications, which can be customized according to actual needs. By setting the installation components, it is convenient for personnel to select sampling tubes 1 of different specifications and volumes and install the sampling tubes 1. The structural design is user-friendly.

[0044] Embodiment 2:

[0045] Support frame;

[0046] The rotating pressing assembly is fixed by a supporting frame;

[0047] The mounting assembly is arranged below the rotating pressing assembly, and a sampling barrel 1 is arranged below the mounting assembly. Two C-shaped baffles 2 are fixedly installed on the inner wall of the lower end of the sampling barrel 1. A separation assembly is arranged above the C-shaped baffle 2. The separation assembly includes two first servo motors 3 and two second servo motors 4. The output end of the first servo motor 3 is fixedly connected to a first connecting shaft 5, and the output end of the second servo motor 4 is fixedly connected to a second connecting shaft 6. A first arc-shaped blade 7 is fixedly installed on the outer wall of the first connecting shaft 5, and a second arc-shaped blade 8 is fixedly installed on the outer wall of the second connecting shaft 6;

[0048] Among them, the bottom wall of the sampling tube 1 is provided with two first mounting parts and two second mounting parts, and the adjacent first mounting part and the second mounting part and the other first mounting part and the second mounting part are axially symmetrically arranged. The first servo motor 3 is fixedly arranged on the first mounting part, and the second servo motor 4 is fixedly arranged on the second mounting part. The height of the first mounting part is greater than the height of the second mounting part to ensure that the first arc-shaped blade 7 and the second arc-shaped blade 8 perform staggered cutting.

[0049] Depend on Figure 3-Figure 5 It can be known that a magnetic suction cup 20 is fixedly connected to the inner bottom wall of the sampling tube 1 , and a metal scraper 21 connected to the magnetic suction cup 20 by magnetic adsorption is provided inside the sampling tube 1 .

[0050] The metal scraper 21 is made of metal iron.

[0051] Two guide rods 22 are symmetrically provided on the outer wall of the sampling tube 1 . One side wall of the upper end of the guide rod 22 is fixedly connected to the outer wall of the metal scraper 21 , and the other side wall of the upper end of the guide rod 22 is fixedly connected to a shifting block 23 .

[0052] As can be seen from the above, when the personnel lift the sampling tube 1 to the top of the soil layer by rotating the pressing assembly, in order to further facilitate the removal of the soil inside the sampling tube 1, the personnel can press the two shifting blocks 23 to drive the guide rod 22 and the metal scraper 21 to move downward. At this time, the metal scraper 21 is no longer magnetically adsorbed to the magnetic suction cup 20, so the soil inside the sampling tube 1 is discharged, which is convenient for the personnel to intuitively observe the compaction of the soil in the soil.

[0053] And by driving the metal scraper 21 to move inside the sampling tube 1, it is convenient to scrape the inner wall of the sampling tube 1, and further facilitates the complete discharge of the soil adhering to the inner wall of the sampling tube 1. The humanized structural design avoids affecting the next soil sampling.

[0054] Embodiment three:

[0055] Support frame;

[0056] The rotating pressing assembly is fixed by a supporting frame;

[0057] The mounting assembly is arranged below the rotating pressing assembly, and a sampling barrel 1 is arranged below the mounting assembly. Two C-shaped baffles 2 are fixedly installed on the inner wall of the lower end of the sampling barrel 1. A separation assembly is arranged above the C-shaped baffle 2. The separation assembly includes two first servo motors 3 and two second servo motors 4. The output end of the first servo motor 3 is fixedly connected to a first connecting shaft 5, and the output end of the second servo motor 4 is fixedly connected to a second connecting shaft 6. A first arc-shaped blade 7 is fixedly installed on the outer wall of the first connecting shaft 5, and a second arc-shaped blade 8 is fixedly installed on the outer wall of the second connecting shaft 6;

[0058] Among them, the bottom wall of the sampling tube 1 is provided with two first mounting parts and two second mounting parts, and the adjacent first mounting part and the second mounting part and the other first mounting part and the second mounting part are axially symmetrically arranged. The first servo motor 3 is fixedly arranged on the first mounting part, and the second servo motor 4 is fixedly arranged on the second mounting part. The height of the first mounting part is greater than the height of the second mounting part to ensure that the first arc-shaped blade 7 and the second arc-shaped blade 8 perform staggered cutting.

[0059] refer to Figure 2 , Figure 4 and Figure 5 As shown, a mounting slot is provided on the bottom wall of the metal scraper 21, and a pressure sensor 24 is fixedly installed inside the mounting slot. A wire hole is penetrated through the top wall of the sampling tube 1 and the upper wall of the magnetic suction cup 20, and a connecting wire 25 is provided inside the wire hole, and one end of the connecting wire 25 is connected to the pressure sensor 24.

[0060] A PLC controller 26 is fixedly mounted on the end of the handle rod 16 , and the PLC controller 26 is electrically connected to the first servo motor 3 , the second servo motor 4 and the pressure sensor 24 .

[0061] As can be seen from the above, the PLC controller 26 has programmable capability, which can control the rotation angle of the output ends of the first servo motor 3 and the second servo motor 4, and further control the motion trajectory of the first curved blade 7 and the second curved blade 8, so as to prevent the first curved blade 7 and the second curved blade 8 from touching the inner wall of the sampling tube 1 during cutting;

[0062] Furthermore, by setting a pressure sensor 24, when the sampling tube 1 is completely inserted into the soil layer, the interior of the sampling tube 1 is completely filled with soil. At this time, the soil inside the sampling tube 1 squeezes and contacts the pressure sensor 24. Further, the PLC controller 26 receives the pressure signal and controls the start-up of the first servo motor 3 and the second servo motor 4, thereby cutting the bottom of the soil inside the sampling tube 1.

[0063] Embodiment 4:

[0064] This device is applied to actual scenes. After the personnel use the device to form a pit (test hole) on the surface of the soil layer, clean standard sand with a particle size of 0.30-0.60mm or 0.25-0.50mm is freely dropped from a certain height into the test hole. The volume of the test hole is measured according to the principle of constant unit weight, and the wet density of the filler in the test pit is obtained. After that, the dry density of the filler in the test hole is calculated according to the water content of the filler, and the compaction degree of the point is obtained by the ratio of the dry density to the maximum dry density of the material determined in the laboratory.

[0065] The standard parts used in the present invention can all be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0066] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0067] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0069] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0070] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0071] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A road and bridge compaction test detection device, characterized in that: include Support frame; A rotating pressing assembly, wherein the rotating pressing assembly is fixed by a supporting frame; A mounting assembly, the mounting assembly being arranged below the rotating pressing assembly, a sampling barrel (1) being arranged below the mounting assembly, two C-shaped baffles (2) being fixedly mounted on the inner wall of the lower end of the sampling barrel (1), a separation assembly being arranged above the C-shaped baffle (2), the separation assembly comprising two first servo motors (3) and two second servo motors (4), the output end of the first servo motor (3) being fixedly connected to a first connecting shaft (5), the output end of the second servo motor (4) being fixedly connected to a second connecting shaft (6), the outer wall of the first connecting shaft (5) being fixedly mounted to a first arc-shaped blade (7), and the outer wall of the second connecting shaft (6) being fixedly mounted to a second arc-shaped blade (8); The bottom wall of the sampling tube (1) is provided with two first mounting parts and two second mounting parts, and the adjacent first mounting part and the second mounting part are axially symmetrically arranged. The first servo motor (3) is fixedly arranged on the first mounting part, and the second servo motor (4) is fixedly arranged on the second mounting part. The height of the first mounting part is greater than the height of the second mounting part, so as to ensure that the first arc-shaped blade (7) and the second arc-shaped blade (8) perform staggered cutting.

2. A road and bridge compaction test detection device according to claim 1, characterized in that: The support frame comprises a base plate (9), a support rod (10), a top plate (11) and a positioning rod (12); the base plate (9) and the top plate (11) are fixedly connected via a plurality of support rods (10); one end of each of the plurality of positioning rods (12) is fixedly connected to the inner wall of the top plate (11).

3. A road and bridge compaction test detection device according to claim 2, characterized in that: The outer wall of the base plate (9) is symmetrically and fixedly mounted with two pedal groove plates (13).

4. A road and bridge compaction test detection device according to claim 2, characterized in that: The rotating pressing assembly comprises an internal threaded barrel (14), a screw rod (15) and a handle rod (16); the other ends of the plurality of positioning rods (12) are fixedly connected to the outer wall of the internal threaded barrel (14); the screw rod (15) is movably arranged in the internal threaded barrel (14); and the handle rod (16) is fixedly arranged on the upper end of the screw rod (15).

5. A road and bridge compaction test detection device according to claim 4, characterized in that: The mounting assembly comprises an insert rod (17), an insert tube (18) and a limit rod (19); the insert rod (17) is fixedly arranged at the lower end of the screw rod (15); the lower end of the insert tube (18) is fixedly connected to the upper wall of the sampling tube (1); a first plug hole is penetrated through the outer wall of the insert tube (18); a second plug hole is penetrated through the outer wall of the insert rod (17); when the insert rod (17) and the insert tube (18) are plugged and connected, the limit rod (19) is inserted into the first plug hole and the second plug hole for limiting.

6. A road and bridge compaction test detection device according to claim 1, characterized in that: A magnetic suction cup (20) is fixedly connected to the inner bottom wall of the sampling tube (1), and a metal scraper (21) connected to the magnetic suction cup (20) by magnetic attraction is provided inside the sampling tube (1).

7. A road and bridge compaction test detection device according to claim 6, characterized in that: The metal scraper (21) is made of metal iron.

8. A road and bridge compaction test detection device according to claim 6, characterized in that: The outer wall of the sampling tube (1) is symmetrically provided with two guide rods (22), one side wall of the upper end of the guide rod (22) is fixedly connected to the outer wall of the metal scraper (21), and the other side wall of the upper end of the guide rod (22) is fixedly connected to a shifting block (23).

9. A road and bridge compaction test detection device according to claim 6, characterized in that: The bottom wall of the metal scraper (21) is provided with a mounting slot hole, a pressure sensor (24) is fixedly installed inside the mounting slot hole, the top wall of the sampling tube (1) and the upper wall of the magnetic suction cup (20) are penetrated by wire holes, a connecting wire (25) is provided inside the wire hole, and one end of the connecting wire (25) is connected to the pressure sensor (24).

10. A road and bridge compaction test detection device according to claim 4, characterized in that: A PLC controller (26) is fixedly mounted on the end of the handle rod (16), and the PLC controller (26) is electrically connected to the first servo motor (3), the second servo motor (4) and the pressure sensor (24).

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