Sand filling instrument for detecting compactness
By introducing the design of bucket cover and ball valve switch in the sand filling instrument, combined with the upper and lower cone structures, the problems of residual sand storage bucket and inconvenient movement are solved, and the efficient use of standard sand and the convenience of testing are achieved.
Patent Information
- Application Number
- CN202422829621.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-11-20
AI Technical Summary
The sand storage bucket of the existing sand filling instrument retains some standard sand after the sand is released, resulting in low utilization rate, and the open design easily leads to sand loss and inconvenience in movement.
A sand storage bucket with a bucket cover and a ball valve switch was designed, combined with an upper and lower cone structure to ensure that the standard sand does not spill during movement and falls freely into the test pit during the test.
It improves the utilization rate of standard sand, avoids the loss of sand and the inconvenience during the movement process, and ensures the accuracy and convenience of test data.
Smart Images
Figure CN223332996U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of soil compaction detection, in particular to a sand filling instrument for compaction detection. Background Art
[0002] The sand filling method is an important method for testing soil compaction. It is used to test the quality of various undisturbed soils and backfill soils and is a key indicator for determining backfill compaction quality. Sand filling instruments are commonly used for compaction testing. Although the descriptions of sand filling instruments vary within industry standards, the principles are the same: the test pit volume is calculated using standard sand, the wet density of the excavated soil is calculated from the soil mass, the dry density is calculated from the moisture content, and finally the compaction degree is calculated from the maximum dry density.
[0003] Taking the Highway Geotechnical Test Code (JTG 3430-2020) as an example, the sand filling method can be used to determine soil density on-site when the maximum particle size of the roadbed soil does not exceed 60mm. The sand filling bucket in this specification consists of two parts: an upper sand storage bucket and a lower inverted conical funnel. A thin iron plate is installed between the funnel and the sand storage bucket to switch. When the circular hole in the thin iron plate aligns with the circular holes in the sand storage bucket and funnel, standard sand can fall freely, completing the test pit filling.
[0004] Based on the above preparation process, when conducting the compaction test, other containers need to be used and a sufficient amount of standard sand needs to be brought to the site for testing. Since the bottom of the sand storage bucket is a horizontal plate, some sand will not be able to fall freely into the test pit on the plate. Therefore, in order to complete the test, more standard sand needs to be added to the sand storage bucket. In addition, the existing sand storage bucket is an open container, which brings inconvenience to the test when moving or accidentally knocking over. Utility Model Content
[0005] In view of the above situation, in order to overcome the defects of the existing technology, the utility model provides a sand filling instrument for compaction detection. Through this design, it effectively solves the problems of the existing sand storage bucket having some standard sand remaining in the bucket after the sand is released, the low utilization rate of the standard sand in the bucket, and the open design of the sand storage bucket, which easily causes the bucket to tip over or the sand to be lost.
[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: the present invention comprises a barrel body, the barrel body is provided with a sand injection port and a sand outlet, a barrel cover that cooperates with the barrel body is provided at the sand injection port, a base plate and a calibration tank are provided below the sand outlet, the calibration tank is a coverless structure, the base plate is located between the calibration tank and the barrel body, a flow guide component is provided at the sand outlet below the barrel body, and the flow guide component is located above the base plate;
[0007] The flow guide assembly includes an upper cone and a lower cone, the upper cone and the lower cone are fixedly connected, a sand guide hole is connected between the upper cone and the lower cone, and a ball valve switch is matched in the sand guide hole.
[0008] Preferably, two symmetrically distributed handles are fixedly connected to the barrel body, and the handles are located below the sand injection port.
[0009] The sand filling instrument for compaction detection is characterized in that the upper cone is a funnel structure and the lower cone is an inverted funnel structure.
[0010] Preferably, the slope of the upper cone is smaller than the slope of the lower cone.
[0011] Preferably, a sealing gasket is sleeved inside the barrel cover, and the diameter of the sealing gasket is the same as the outer diameter of the barrel body.
[0012] Preferably, a control rod is fixedly connected to the ball valve switch, and the control rod is located outside the barrel body.
[0013] Compared with the prior art, the present invention has the following outstanding advantages:
[0014] The utility model is provided with a bucket cover on the upper end of the sand storage bucket and a ball valve switch on the lower end of the sand storage bucket, so that the sand storage bucket can be easily sealed to store standard sand, the movement of the sand filling instrument is convenient, and the trouble caused by accidentally knocking over the sand filling instrument can be avoided.
[0015] The upper cone at the bottom of the sand storage bucket of the utility model adopts a conical design with an appropriate angle, which can maximize the use of the standard sand in the storage bucket and eliminates the need to carry an additional large container to store the standard sand. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the top structure of the utility model.
[0017] Figure 2 For this utility model Figure 1 Schematic cross-section of AA.
[0018] Numbers in the figure: 1. Barrel cover; 2. Handle; 3. Barrel body; 4. Upper cone; 5. Ball valve switch; 6. Lower cone; 7. Base plate; 8. Calibration tank. DETAILED DESCRIPTION
[0019] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0020] Please see the attached Figure 1-2 The present embodiment is a sand filling instrument for compaction detection: it includes a barrel body 3, the barrel body 3 is provided with a sand injection port and a sand outlet port, the sand injection port is provided with a barrel cover 1 that cooperates with the barrel body 3, and a base plate 7 and a calibration tank 8 are provided below the sand outlet port. The calibration tank 8 is a coverless structure, the base plate 7 is located between the calibration tank 8 and the barrel body 3, and a guide component is provided at the sand outlet port below the barrel body, and the guide component is located above the base plate 7; the guide component includes an upper cone 4 and a lower cone 6, the upper cone 4 and the lower cone 6 are fixedly connected, and a sand guide hole is connected between the upper cone 4 and the lower cone 6, and a ball valve switch 5 is provided in the sand guide hole.
[0021] The sand storage bucket is composed of seven parts: the first part is the sand storage bucket on the upper side, and the second part is the calibration tank 8 on the lower side. The sand storage bucket is composed of a bucket cover 1, a handle 2, a barrel body 3, an upper cone 4, a ball valve switch 5, a lower cone 6 and a base plate 7. The sand storage bucket is made of iron sheet as a whole. The barrel body 3 is cylindrical in appearance. The bucket cover 1 is located at the sand injection port at the upper end of the barrel body 3. The bucket cover 1 can be opened. In order to achieve a sealing effect between the bucket cover 1 and the barrel body 3, a rubber sealing gasket is installed inside the bucket cover 1. At the same time, the bucket cover 1 and the barrel body 3 can be connected by interference fit, or mutually matching thread grooves can be provided on the bucket cover 1 and the barrel body 3 for threaded connection to ensure the sealing effect of the bucket cover 1 on the barrel body 3. The upper cone 4 and the lower cone 6 are placed in opposite directions. The upper cone 4 has a gentler slope and the lower cone 6 has a larger slope. The ball valve switch 5 is located at the base of the cone tip of the two cones. The ball valve switch 5 is controlled To ensure the flow of standard sand, a handle 2 is provided on the outside of the barrel body 3, and the two handles 2 are symmetrically distributed at 180 degrees, which is convenient for carrying the barrel body 3. A hole groove with the same inner diameter as the barrel body 3 is opened in the middle of the base plate 7. The cross-section of the base plate 7 is a circular or square structure. When filling the test pit with sand, the base plate 7 is placed on the test pit and the barrel body 3 is placed on the base plate 7. This facilitates the collection of samples and standard sand in the test pit. The calibration tank 8 does not need to be carried during the test pit experiment. The calibration tank 8 is used when determining the density of standard sand in indoor experiments. The inner hole of the calibration tank 8 is the same diameter as the inner hole of the barrel body 3. The calibration tank 8 is made of iron sheet with a certain rigidity, which can maintain its shape for a long time and is not easy to deform. Further, in order to facilitate the placement of the base plate 7 between the barrel body 3 and the calibration tank 8, the lower end of the barrel body 3 and the upper end of the calibration tank 8 are provided with outwardly protruding eaves, which facilitate the coordination of the barrel body 3, the base plate 7 and the calibration tank 8 when in the laboratory.
[0022] After the standard sand is added into the sand storage bucket from the sand injection port, the bucket cover 1 is closed. During the movement, the standard sand can be kept from spilling out. After it is placed on the test pit, the bucket cover 1 is opened, and then the ball valve switch 5 is opened. The upper and lower parts are connected to the air to ensure that the standard sand can fall freely. The upper cone 4 has a certain slope to ensure that all the standard sand can fall into the test pit. The standard sand in the sand storage bucket can be fully utilized. The calibration tank 8 is used to calibrate the density of the standard sand to provide data for test calculations.
[0023] The specific implementation process of this utility model is based on the "Highway Geotechnical Test Code" (JTG 3430-2020):
[0024] 1. Determine the mass of the standard sand in the lower cone 6;
[0025] 2. Standard sand density calibration;
[0026] 3. Before going to the site for testing, fill the sand storage bucket with standard sand and close the bucket cover 1. This is the amount of standard sand required for the field test;
[0027] 4. After arriving at the site, conduct the test in accordance with the specifications. When placing the sand storage bucket on the test pit, the bucket cover 1 must be opened to prevent the standard sand from falling freely due to air pressure.
[0028] 5. After the test is completed, carefully take out the standard sand from the test pit, process it, and add it into the sand storage bucket through the bucket cover 1 for the next test.
[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A sand filling instrument for compaction detection, characterized by: The invention comprises a barrel body (3), wherein the barrel body (3) is provided with a sand injection port and a sand outlet, a barrel cover (1) matched with the barrel body (3) is provided at the sand injection port, a base plate (7) and a calibration tank (8) are matched below the sand outlet, and the calibration tank (8) is a coverless structure, the base plate (7) is located between the calibration tank (8) and the barrel body (3), and a flow guide component is provided at the sand outlet below the barrel body (3), and the flow guide component is located above the base plate (7); The flow guide assembly comprises an upper cone (4) and a lower cone (6), wherein the upper cone (4) and the lower cone (6) are fixedly connected, a sand guide hole is connected between the upper cone (4) and the lower cone (6), and a ball valve switch (5) is fitted in the sand guide hole.
2. A sand filling instrument for compaction detection according to claim 1, characterized in that: Two symmetrically distributed handles (2) are fixedly connected to the barrel body (3), and the handles (2) are located below the sand injection port.
3. The sand filling instrument for compaction detection according to claim 1, characterized in that: Therefore, the upper cone (4) is a funnel structure, and the lower cone (6) is an inverted funnel structure.
4. The sand filling instrument for compaction detection according to claim 3, characterized in that: The slope of the upper cone (4) is smaller than the slope of the lower cone (6).
5. The sand filling instrument for compaction detection according to claim 1, characterized in that: The barrel cover (1) is provided with a sealing gasket, and the diameter of the sealing gasket is the same as the outer diameter of the barrel body (3).
6. The sand filling instrument for compaction detection according to claim 2, characterized in that: A control rod is fixedly connected to the ball valve switch (5), and the control rod is located outside the barrel body (3).