High-precision road surface compactness manual detector

Abstract

The utility model discloses a high-precision road surface compaction degree manual detector, and relates to the technical field of road surface compaction detection. Comprising a sand filling cylinder body, a limiting base plate, a filtering assembly and an adjusting assembly, a material guiding plate is arranged in the sand filling cylinder body, a connecting circular plate is arranged in the sand filling cylinder body, a plurality of sets of material guiding through holes are formed in the surface of the connecting circular plate in a penetrating mode, and a filtering net is embedded in the bottom of the filtering assembly; the sand filling cylinder body is located above the limiting base plate, the filtering assembly is located at the center of the interior of the sand filling cylinder body and detachably connected with the sand filling cylinder body, and the adjusting assembly is located at the center of the interior of the filtering assembly. According to the utility model, the problem that the detection accuracy is reduced due to the influence on the test result because sand materials enter the test hole at the same time and are easy to accumulate is solved.

Description

Technical Field

[0001] This utility model relates to the field of road compaction testing technology, specifically a high-precision manual road compaction tester. Background Technology

[0002] Compaction degree is one of the key indicators for testing the construction quality of road subgrade and pavement. Common methods for measuring compaction include the ring cutter method, sand cone method, and nuclear density meter method. The sand cone method involves replacing the volume of a test hole with a uniform amount of sand, which must fall freely into the hole without subsequent manual mixing. The sand cone is the primary instrument for measuring compaction using this method.

[0003] A search revealed that in the prior art, patent announcement number CN216484474U, patent date 2022-05-10, entitled "A Compaction Degree Testing Device," which improves testing efficiency, includes a sand-filling cylinder and a base plate. The base plate has an alignment hole in its center. The sand-filling cylinder includes a cylinder body and a support ring disposed at the bottom of the cylinder body. A positioning post is provided on the base plate, and the positioning post has a positioning groove communicating with the alignment hole and used to accommodate the support ring. The support ring has a circular structure and includes a positioning hole. When the support ring abuts against the bottom of the positioning groove, the positioning hole and the alignment hole are coaxial. A limiting member is provided between the positioning post and the support ring to prevent circumferential rotation of the support ring within the positioning groove. The positioning post is provided with a positioning component to prevent axial movement of the support ring when it is engaged in the positioning groove. This application allows for convenient installation of the sand-filling cylinder onto the base plate, thereby improving testing efficiency.

[0004] Based on the search of patent numbers, and combined with the shortcomings of existing technologies, the following findings were made;

[0005] When the aforementioned application involves introducing sand into the test hole, the sand will accumulate and bulge as the operator guides it in, which will affect the accuracy of the quality detection of the introduced sand. Furthermore, the aforementioned application does not fix the base plate, and repeated testing can easily move the position of the base plate, resulting in offset, which will also affect the subsequent test results. Utility Model Content

[0006] To address the problems mentioned in the background art, the purpose of this utility model is to provide a high-precision manual road compaction tester, which has the advantage of fixing the position of the limiting plate to prevent the limiting plate from shifting due to repeated testing, thereby affecting the accuracy of the calibration hole and the test position. It also solves the problem that sand material entering the test hole at the same time tends to accumulate in one place, affecting the test results and thus reducing the accuracy of the test.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-precision manual road compaction tester, comprising a sand-filling cylinder body, a limiting base plate, a filter assembly, and an adjustment assembly. The sand-filling cylinder body has a guide plate inside and a connecting circular plate inside. The surface of the connecting circular plate has several sets of guide holes. A filter screen is embedded at the bottom of the filter assembly. A scraper is provided inside the filter assembly, and the scraper is slidably attached to the surface of the filter screen. The sand-filling cylinder body is located above the limiting base plate. The filter assembly is located at the center of the sand-filling cylinder body and is detachably connected to the sand-filling cylinder body. The adjustment assembly is located at the center of the filter assembly.

[0008] As a preferred embodiment of the present invention, a calibration hole is provided at the center of the inner bottom of the limiting substrate, an arc-shaped limiting member is provided at the inner bottom of the limiting substrate, and two sets of limiting slots are symmetrically provided on the surface of the arc-shaped limiting member, and a set of connecting blocks is provided at the center of each of the opposite side walls of the limiting substrate.

[0009] As a preferred embodiment of this utility model, a set of fixing bolts is provided through the surface of each of the two sets of connecting blocks, a support ring is provided on the surface of the sand filling cylinder body, a transparent observation window is embedded in the surface of the sand filling cylinder body, and two sets of lifting handles are symmetrically provided on the top of the outer wall of the sand filling cylinder body.

[0010] As a preferred embodiment of this utility model, the top of the sand filling cylinder body is provided with a material inlet, the guide plate is a funnel-shaped structure, and the guide plate does not contact the inner wall of the sand filling cylinder body. A limiting circular groove is provided on the top of the guide plate.

[0011] In a preferred embodiment of this invention, the connecting circular plate is connected to the bottom of the outer surface of the guide plate, and several sets of guide holes are arranged in a circular array with the central axis of the connecting circular plate as the center. The top of the filter assembly is fitted to the bottom of the connecting circular plate.

[0012] As a preferred embodiment of this utility model, the inner wall of the sand filling cylinder body is provided with two sets of locking blocks. The two sets of locking blocks are symmetrically arranged with the central axis of the sand filling cylinder body as the center, and the two sets of locking blocks are movably locked with the bottom end of the filter assembly.

[0013] As a preferred embodiment of this utility model, the filter screen has a circular structure, the adjustment component is located at the center of the bottom of the filter component, the surface of the adjustment component is provided with a limiting groove, and the filter component is provided with a moving rod inside, one end of the moving rod being slidably fitted and connected to the inside of the limiting groove.

[0014] In a preferred embodiment of this invention, the scraper is located at the bottom end of the moving rod, and an adjusting rod is provided through the top end of the adjusting assembly. One end of the adjusting rod is connected to one end of the moving rod, and the other end of the adjusting rod extends through the limiting groove to the top of the sand filling cylinder body.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model uses a cone-shaped guide plate to divert the poured sand. The sand is diverted by the guide plate into several sets of guide holes, which are evenly spaced to further divert the sand. This solves the problem that sand entering the test hole at the same time tends to accumulate in one place, affecting the test results and reducing the accuracy of the test. It achieves the effect of improving the practicality of the equipment while improving the accuracy of the test.

[0017] 2. This utility model, through the setting of two sets of snap-fit ​​blocks, can limit and support the filter assembly and the guide plate, and facilitate the removal of the guide plate and the filter assembly from the inside of the sand filling cylinder body, thereby improving the efficiency of equipment disassembly and installation, making it easier for users to remove and clean the filter assembly and the guide plate from the equipment, reducing the error of the next test, and improving the practicality of the equipment.

[0018] 3. This utility model uses a support ring and an arc-shaped limiting component to engage and fix the sand filling cylinder body and the limiting plate. By matching the protrusion on the surface of the support ring with the limiting groove on the surface of the arc-shaped limiting component, the movement or rotation of the sand filling cylinder body can be prevented during the sand filling process. The setting of the connecting block and fixing bolt can fix the position of the limiting plate, preventing the limiting plate from shifting during repeated testing, thus affecting the accuracy of the calibration hole and the detection position, and facilitating users to perform repeated test operations. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the sand-filling cylinder body of this utility model;

[0021] Figure 3 This is a cross-sectional schematic diagram of the main structure of the sand-filling cylinder of this utility model;

[0022] Figure 4 This is a three-dimensional structural diagram of the filter assembly of this utility model.

[0023] In the diagram: 1. Sand filling cylinder body; 2. Limiting base plate; 3. Alignment hole; 4. Arc-shaped limiting component; 5. Limiting slot; 6. Connecting block; 7. Fixing bolt; 8. Lifting handle; 9. Inlet; 10. Support ring; 11. Guide plate; 12. Limiting circular groove; 13. Connecting circular plate; 14. Guide through hole; 15. Filter assembly; 16. Clip block; 17. Filter screen; 18. Adjustment assembly; 19. Limiting groove; 20. Moving rod; 21. Scraper; 22. Adjusting rotating rod; 23. Transparent observation window. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1 to 4 As shown, the present invention provides a high-precision manual road compaction tester, including a sand filling cylinder body 1, a limiting base plate 2, a filter assembly 15, and an adjustment assembly 18. The sand filling cylinder body 1 is located above the limiting base plate 2, and the bottom of the sand filling cylinder body 1 is attached to the limiting base plate 2. The filter assembly 15 is located at the internal center of the sand filling cylinder body 1, and the filter assembly 15 is detachably connected to the sand filling cylinder body 1. The adjustment assembly 18 is located at the internal center of the filter assembly 15.

[0026] refer to Figure 1 The limiting substrate 2 has a calibration hole 3 at the center of its inner bottom end, and an arc-shaped limiting member 4 at the inner bottom end of the limiting substrate 2. The central axis of the arc-shaped limiting member 4 coincides with the central axis of the calibration hole 3, and two sets of limiting slots 5 are symmetrically opened on the surface of the arc-shaped limiting member 4. A set of connecting blocks 6 is provided at the center of each of the opposite side walls of the limiting substrate 2.

[0027] Both sets of connecting blocks 6 are provided with a set of fixing bolts 7. The surface of the sand filling cylinder body 1 is provided with a support ring 10. The support ring 10 is located at the bottom end of the side wall of the sand filling cylinder body 1, and the support ring 10 is movably engaged with the arc-shaped limiting member 4. The surface of the sand filling cylinder body 1 is embedded with a transparent observation window 23. The transparent observation window 23 is located at the bottom end of the side wall of the sand filling cylinder body 1. Two sets of lifting handles 8 are symmetrically provided on the top of the outer wall of the sand filling cylinder body 1.

[0028] As a technical optimization of this utility model, by setting the arc-shaped limiting member 4 and by movably engaging the supporting ring 10 with the arc-shaped limiting member 4, the sand filling cylinder body 1 and the limiting base plate 2 can be limited and fixed. By fitting the protrusion on the surface of the supporting ring 10 with the limiting groove 5 on the surface of the arc-shaped limiting member 4, the movement or rotation of the sand filling cylinder body 1 during the sand filling process can be prevented. By setting the connecting block 6 and the fixing bolt 7, the position of the limiting base plate 2 can be fixed, preventing the limiting base plate 2 from shifting during repeated testing, thereby affecting the accuracy of the calibration hole 3 and the detection position.

[0029] refer to Figure 2 The top of the sand filling cylinder body 1 is provided with a feed inlet 9, and the inside of the sand filling cylinder body 1 is provided with a guide plate 11. The guide plate 11 has a funnel-shaped structure and does not contact the inner wall of the sand filling cylinder body 1. The top of the guide plate 11 is provided with a limiting circular groove 12, and the inside of the sand filling cylinder body 1 is provided with a connecting circular plate 13.

[0030] The connecting circular plate 13 is connected to the bottom of the outer surface of the guide plate 11. Several sets of guide holes 14 are opened through the surface of the connecting circular plate 13. The several sets of guide holes 14 are arranged in a ring array with the central axis of the connecting circular plate 13 as the center. The connecting circular plate 13 is located above the filter assembly 15. The top of the filter assembly 15 is attached to the bottom of the connecting circular plate 13.

[0031] As a technical optimization of this utility model, the guide plate 11 is designed with a cone-shaped structure to divert the poured sand, preventing it from accumulating in one place and affecting the test results. The sand is diverted by the guide plate 11 and enters the interior of several sets of guide holes 14, which are evenly distributed to further divert the sand and achieve uniform feeding.

[0032] refer to Figure 3 The inner wall of the sand filling cylinder body 1 is provided with two sets of snap-fit ​​blocks 16. The two sets of snap-fit ​​blocks 16 are symmetrically arranged with the central axis of the sand filling cylinder body 1 as the center. The two sets of snap-fit ​​blocks 16 are located at the inner center of the sand filling cylinder body 1, and the two sets of snap-fit ​​blocks 16 are movably snap-fitted to the bottom end of the filter assembly 15.

[0033] As a technical optimization of this utility model, by setting two sets of the snap-fit ​​blocks 16, the filter assembly 15 and the guide plate 11 can be limited and supported, and the guide plate 11 and the filter assembly 15 can be easily removed from the inside of the sand filling cylinder body 1, thereby improving the efficiency of equipment disassembly and installation.

[0034] refer to Figure 4 The bottom of the filter assembly 15 is embedded with a filter screen 17, which has a circular structure. The adjustment assembly 18 is located at the center of the bottom of the filter assembly 15. A limiting groove 19 is formed on the surface of the adjustment assembly 18. A moving rod 20 is provided inside the filter assembly 15. One end of the moving rod 20 is slidably fitted and connected to the inside of the limiting groove 19.

[0035] The filter assembly 15 has a scraper 21 inside, which is located at the bottom end of the moving rod 20 and is slidably attached to the surface of the filter screen 17. The top end of the adjustment assembly 18 is provided with an adjustment rod 22, one end of which is connected to one end of the moving rod 20, and the other end of which extends through the limiting groove 12 to the top of the sand filling cylinder body 1.

[0036] As a technical optimization of this utility model, through the setting of the scraper 21, when the sand enters the filter assembly 15 through several sets of the guide holes 14, the fine sand with uniform particles enters the test hole through the filter screen 17, while the larger sand particles remain on the surface of the filter screen 17. During the process of introducing the sand, the operator rotates the adjusting rod 22 to drive the moving rod 20 to rotate, thereby driving the scraper 21 to move in contact with the surface of the filter screen 17 to clean the accumulated sand and prevent the sand from accumulating in one place and causing difficulties in discharging.

[0037] The working principle and usage process of this utility model are as follows: During use, the operator first fixes the position of the limiting plate 2 using the connecting block 6 and the fixing bolt 7 to prevent the limiting plate 2 from shifting during repeated testing, thus affecting the accuracy of the calibration hole 3 and the detection position. Then, the supporting ring 10 and the arc-shaped limiting component 4 are movably engaged to fix the sand filling cylinder body 1 and the limiting plate 2. By engaging the protrusion on the surface of the supporting ring 10 with the limiting groove 5 on the surface of the arc-shaped limiting component 4, the movement or rotation of the sand filling cylinder body 1 during sand filling is prevented. The operator uses the cone-shaped guide plate 11 to divert the poured sand, preventing it from accumulating in one place inside the test hole and affecting the test results. The sand is diverted by the guide plate 11... The sand flows into the interior of several sets of guide holes 14, which are evenly spaced to further divert the sand. After the sand enters the filter assembly 15 through the several sets of guide holes 14, the fine sand with uniform particles enters the test hole through the filter screen 17, while the larger sand particles remain on the surface of the filter screen 17. During the sand introduction process, the operator rotates the adjusting rod 22 to drive the moving rod 20 to rotate, thereby driving the scraper 21 to move against the surface of the filter screen 17 to clean the accumulated sand and prevent the sand from accumulating in one place and causing difficulty in discharging. After completion, it is easy to remove the guide plate 11 and the filter assembly 15 from the interior of the sand filling cylinder body 1 and clean the filter assembly 15 and the guide plate 11.

[0038] In summary, this high-precision manual road compaction tester, through the cone-shaped guide plate 11, can divert the poured sand. The sand is diverted by the guide plate 11 into the interior of several sets of guide holes 14, which are evenly distributed to further divert the sand. This solves the problem that sand entering the test hole at the same time tends to accumulate in one place, affecting the test results and thus reducing the accuracy of the test.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision manual road compaction tester, comprising a sand-filling cylinder body (1), a limiting base plate (2), a filter assembly (15), and an adjustment assembly (18), characterized in that: The sand filling cylinder body (1) is provided with a guide plate (11) inside. The sand filling cylinder body (1) is provided with a connecting circular plate (13) inside. The surface of the connecting circular plate (13) is provided with several sets of guide holes (14). The bottom of the filter assembly (15) is embedded with a filter screen (17). The filter assembly (15) is provided with a scraper (21) inside. The scraper (21) is slidably attached to the surface of the filter screen (17). The sand filling cylinder body (1) is located above the limiting base plate (2). The filter assembly (15) is located at the center inside the sand filling cylinder body (1). The filter assembly (15) is detachably connected to the sand filling cylinder body (1). The adjusting component (18) is located at the center inside the filter assembly (15).

2. The high-precision manual pavement compaction tester according to claim 1, characterized in that: The limiting substrate (2) has a calibration hole (3) at the center of its inner bottom end. The limiting substrate (2) has an arc-shaped limiting member (4) at its inner bottom end. The surface of the arc-shaped limiting member (4) has two sets of limiting slots (5) symmetrically opened. The center of each of the opposite side walls of the limiting substrate (2) has a set of connecting blocks (6).

3. The high-precision manual pavement compaction tester according to claim 2, characterized in that: Both sets of connecting blocks (6) are provided with a set of fixing bolts (7) through their surfaces. The surface of the sand filling cylinder body (1) is provided with a support ring (10). The surface of the sand filling cylinder body (1) is embedded with a transparent observation window (23). The top of the outer wall of the sand filling cylinder body (1) is symmetrically provided with two sets of lifting handles (8).

4. The high-precision manual pavement compaction tester according to claim 1, characterized in that: The top of the sand filling cylinder body (1) is provided with a material inlet (9), the guide plate (11) is a funnel-shaped structure, and the guide plate (11) does not contact the inner wall of the sand filling cylinder body (1). The top of the guide plate (11) is provided with a limiting circular groove (12).

5. The high-precision manual pavement compaction tester according to claim 4, characterized in that: The connecting circular plate (13) is connected to the bottom of the outer surface of the guide plate (11). Several sets of guide holes (14) are arranged in a ring array with the central axis of the connecting circular plate (13) as the center. The top of the filter assembly (15) is fitted to the bottom of the connecting circular plate (13).

6. The high-precision manual pavement compaction tester according to claim 4, characterized in that: The inner wall of the sand filling cylinder body (1) is provided with two sets of snap-fit ​​blocks (16). The two sets of snap-fit ​​blocks (16) are symmetrically arranged with the central axis of the sand filling cylinder body (1) as the center, and the two sets of snap-fit ​​blocks (16) are movably snap-fitted to the bottom end of the filter assembly (15).

7. The high-precision manual pavement compaction tester according to claim 1, characterized in that: The filter screen (17) has a circular structure. The adjustment component (18) is located at the center of the bottom of the filter component (15). A limiting groove (19) is opened on the surface of the adjustment component (18). A moving rod (20) is provided inside the filter component (15). One end of the moving rod (20) is slidably connected to the inside of the limiting groove (19).

8. The high-precision manual pavement compaction tester according to claim 1, characterized in that: The scraper (21) is located at the bottom of the moving rod (20), and the top of the adjusting assembly (18) is provided with an adjusting rotating rod (22). One end of the adjusting rotating rod (22) is connected to one end of the moving rod (20), and the other end of the adjusting rotating rod (22) extends through the limiting circular groove (12) and extends to the top of the sand filling cylinder body (1).

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