Repose angle tester

Abstract

The utility model discloses a repose angle tester which comprises a support, a funnel, a measuring table and a water adding device. The support comprises a base, a vertical rod arranged on the base and provided with scales on the surface, and a transverse rod slidably connected with the vertical rod. The funnel is connected with the cross rod, and the position of the funnel is adjusted by sliding the cross rod in the vertical rod; the measuring table is arranged on the base, and the center of the detection surface of the measuring table is aligned with the center of the funnel; the water adding device comprises a water tank, a water tank sleeving the outer side of the measuring table, and a guide pipe connecting the water tank and the water tank; in addition, a scale is further arranged below the discharge hole of the funnel; and the scale is aligned with the center of a conical tip formed by the sample on the detection surface. According to the technical scheme, the water adding device and the ruler are arranged, so that the stability of the sample in the measuring table can be kept to the maximum extent in the two states under the condition that the repose angle measurement of the sample in the air drying state and the repose angle measurement of the sample in the underwater state are met at the same time, and the test error is reduced.

Description

Technical Field

[0001] This application relates to the field of measuring instruments, and more specifically, to an angle of repose measuring instrument. Background Technology

[0002] The angle of repose test is one of the important test contents of geotechnical engineering testing, which includes determining the angle of repose of non-cohesion soil in air-dried and underwater conditions.

[0003] However, during the experiment using the existing angle of repose measuring instrument, it is necessary to manually control the distance between the funnel and the sample. This operation is prone to errors. Furthermore, when measuring the underwater angle of repose, it is necessary to manually submerge the disc containing the sample into the water. During this process, the disc is prone to shaking, and the sample is in a critical equilibrium state, which may cause some of the sample to become unstable and slip, thus causing errors.

[0004] Therefore, how to design an instrument for measuring the angle of repose and reduce the error during measurement has become a problem that needs to be solved in this field. Utility Model Content

[0005] In view of this, this application proposes a solution for a repose angle measuring instrument.

[0006] This application provides a repose angle measuring instrument, which includes: a support, a funnel, a measuring platform, and a water adding device;

[0007] The support includes: a base, an upright post disposed on the base and having a scale on its surface, and a crossbar slidably connected to the upright post;

[0008] The funnel is connected to the crossbar, and the position of the funnel is adjusted by sliding the funnel in the upright through the crossbar.

[0009] The measuring platform is mounted on the base, and the center of the measuring platform's detection surface is aligned with the center of the funnel.

[0010] The water supply device includes: a water tank, a water trough fitted outside the measuring platform, and a conduit connecting the water trough and the water tank;

[0011] Furthermore, a scale is provided below the outlet of the funnel, and the scale is aligned with the center of the cone tip formed by the sample on the detection surface.

[0012] Preferred:

[0013] The base is perpendicular to the upright, and the crossbar is perpendicular to the upright.

[0014] More preferably, one end of the crossbar is provided with a sliding nut and a lock, the crossbar is slidably connected to the upright through the sliding nut and fixed by the lock.

[0015] More preferably, the measuring stage includes: a pedestal and a disk;

[0016] One side of the disc is fixedly connected to one side of the platform, and the other side of the platform is fixedly connected to the base.

[0017] More preferably, the platform is detachably and fixedly connected to the disk.

[0018] More preferably, the pedestal is cylindrical, and the diameter of the pedestal is smaller than the diameter of the disk.

[0019] More preferably, the base is plate-shaped, and the side length of the base is greater than the diameter of the disk.

[0020] More preferably, the side length of the water tank is smaller than the side length of the base, but larger than the diameter of the disc.

[0021] Preferably, the conduit includes a control valve, which controls the flow rate of water from the water tank to the water trough by opening and closing the control valve.

[0022] Preferably, the length of the scale is 1 centimeter.

[0023] This application provides an angle of repose measuring instrument, which includes a support, a funnel, a measuring platform, and a water adding device. A scale is provided below the funnel. By setting the water adding device and the scale, the stability of the sample in the measuring platform can be maximized in both the air-dried state and the underwater state of the sample, thereby reducing the measurement error.

[0024] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application, and the illustrative embodiments and descriptions thereof are used to explain this application. In the drawings:

[0026] Figure 1 This is a schematic diagram of the repose angle measuring instrument according to a preferred embodiment of this application.

[0027] Attached Figure Numbers: 1-Support; 11-Base; 12-Upright Post; 13-Horizontal Bar; 14-Sliding Nut; 2-Function Funnel; 21-Scale; 31-Stool; 32-Disc; 41-Water Tank; 42-Water Sink; 43-Conduit. Detailed Implementation

[0028] The technical solution of this application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] like Figure 1 As shown, the angle of repose measuring instrument provided in this application includes: a support 1, a funnel 2, a measuring platform, and a water adding device. The support 1 is used to mount the funnel 2 and the measuring platform. The sample falls into the measuring platform through the funnel 2, and the angle of repose of the sample is measured by detecting the state of the sample in the measuring platform.

[0030] The support 1 includes: a base 11, a vertical rod 12 disposed on the base 11 and having graduations on its surface, and a horizontal rod 13 slidably connected to the vertical rod 12. The graduations on the vertical rod 12 record the position of the horizontal rod 13 within the vertical rod 12. The funnel 2 is connected to the horizontal rod 13, and the position of the funnel 2 is adjusted and recorded by sliding within the vertical rod 12 via the horizontal rod 13, thus adjusting and recording the position and height at which the sample falls. Furthermore, the base 11 and the vertical rod 12 are perpendicular to each other, and the horizontal rod 13 is also perpendicular to the vertical rod 12, allowing the sample in the funnel 2 to fall vertically. Meanwhile, the end of the crossbar 13 connected to the upright 12 is provided with a sliding nut 14 and a lock (not shown in the figure). The crossbar 13 is vertically slidably connected to the upright 12 through the sliding nut 14 and fixed by the lock. That is, when the crossbar 13 is subjected to a thrust along the axis of the upright 12, it can move smoothly along the axis of the upright 12. When it is not subjected to a thrust, it can be locked and fixed to the upright 12 by the lock under its own weight.

[0031] A measuring platform is mounted on base 11, with the center of its detection surface aligned with the center of funnel 2. This allows the sample to fall from the outlet of funnel 2 into the center of the detection surface of the measuring platform for subsequent measurement. The measuring platform includes a pedestal 31 and a disc 32. The disc 32 can be considered the detection surface of the measuring platform; one side is fixedly connected to one side of the pedestal 31, while the other side of the pedestal 31 is fixedly connected to base 11. The pedestal 31 is cylindrical, allowing the disc 32 to be a certain distance from the base. Meanwhile, base 11 is plate-shaped, with a side length greater than the diameter of the disc 32, and the diameter of the pedestal 31 smaller than the diameter of the disc 32. When the sample falls from funnel 2, it lands in the center of disc 32.

[0032] In a preferred embodiment, the platform 31 and the disc 32 are detachably fixedly connected, and the user can select a disc 32 of appropriate size to receive the sample as needed.

[0033] In addition, to simultaneously measure the angle of repose in both the air-dried and underwater states, the angle of repose measuring instrument provided in this application also includes a water-adding device. This device includes a water tank 41, a water trough 42 fitted outside the measuring platform, and a conduit 43 connecting the water trough 42 and the water tank 41. The side length of the water trough 42 is smaller than the side length of the base 11 and larger than the diameter of the disc 32, allowing the disc 32 to be completely contained within the water trough 42. When measuring the angle of repose in the air-dried state, there is no need to add water to the water trough 42 fitted outside the measuring platform, ensuring the sample falling into the measuring platform remains air-dried. However, when measuring the angle of repose in the underwater state, water needs to be slowly added from the water tank 41 to the water trough 42 fitted outside the measuring platform through the conduit 43 until it reaches a suitable level, ensuring the sample falling into the measuring platform is underwater. By comparing the angle of repose in the air-dried state and the underwater state, the test of the sample can be performed more effectively.

[0034] In a preferred embodiment, the conduit 43 includes a control valve (not shown) that controls the flow rate of water from the water tank 41 to the water trough 42 by opening and closing the control valve.

[0035] Furthermore, in order to better control the distance between the sample drop outlet in the funnel 2 and the landing point of the disc 32, this application also provides a scale 21 below the discharge outlet of the funnel 2. The scale 21 is aligned with the center of the cone tip formed by the sample falling onto the detection surface. During measurement, the scale 21 is used to keep the distance between the discharge outlet of the funnel 2 and the cone tip formed by the sample at a fixed value. This can better control the height of the sample drop and reduce the error that may be caused by manual operation.

[0036] In a preferred embodiment, the length of the scale 21 is not less than 1 cm. During measurement, the scale 21 is used to keep the distance between the outlet of the funnel 2 and the cone tip formed by the sample always at 1 cm.

[0037] Below, in a specific embodiment, the process of measuring the angle of repose of a sample using the angle of repose measuring instrument of this application is described.

[0038] During the measurement process, first place the support 1 stably, select the appropriate model of the disc 32 according to the sample type, place the disc 32 on the platform 31, adjust the funnel 2 so that the scale 21 below the funnel 2 contacts the disc 32, record the scale ① at the junction of the sliding nut 14 and the upright 12 of the support 1, and make the center of the funnel 2, the platform 31 and the disc 32 on the same vertical line. Pour the air-dried sample into funnel 2, open the bottom of funnel 2 to allow the sample to leak out, and simultaneously push the sliding nut 14 to slide it upward along the upright 12 of the support 1. At the same time, ensure that the scale 21 below funnel 2 just touches the cone tip formed by the sample. When the cone formed by the sample completely covers the disk 32, record the scale ② at the junction of the sliding nut 14 and the upright 12 of the support 1. Subtract scale ① from scale ② to obtain the height of the sample cone in the air-dried state. Based on the height of the sample cone and the diameter of the disk 32, the angle of repose of the sample in the air-dried state can be calculated.

[0039] When it is necessary to determine the angle of repose of the underwater sample, the conduit 43 should be opened to allow water in the water tank 41 to slowly flow into the water trough 42. When the water level reaches the top of the sample cone, the sliding nut 14 should be pushed so that the scale 21 below the funnel 2 just contacts the cone tip formed by the sample. The scale ③ at the junction of the sliding nut 14 and the upright 11 of the support 1 should be recorded. The height of the sample cone in the underwater state can be obtained by subtracting the scale ① from the scale ③. The angle of repose of the sample in the underwater state can be determined based on the height of the sample cone and the diameter of the disk 32.

[0040] This application provides an angle of repose measuring instrument, which includes a support, a funnel, a measuring platform, and a water adding device. A scale is provided below the funnel. By setting the water adding device and the scale, the stability of the sample in the measuring platform can be maximized in both the air-dried state and the underwater state of the sample, thereby reducing the measurement error.

[0041] The preferred embodiments of the present application are described in detail above. However, the present application is not limited to the specific details of the above embodiments. Within the technical concept of the present application, various simple modifications can be made to the technical solution of the present application, and these simple modifications all fall within the scope of protection of the present application.

[0042] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner unless there is any contradiction. In order to avoid unnecessary repetition, this application will not further describe various possible combinations.

[0043] Furthermore, various different embodiments of this application can be combined in any way, as long as they do not violate the spirit of this application, they should also be regarded as the content disclosed by this utility model.

Claims

1. A repose angle measuring instrument, characterized in that, The angle of repose measuring instrument includes: a support, a funnel, a measuring platform, and a water filling device; The support includes: a base, an upright post disposed on the base and having a scale on its surface, and a crossbar slidably connected to the upright post; The funnel is connected to the crossbar, and the position of the funnel is adjusted by sliding the funnel in the upright through the crossbar. The measuring platform is mounted on the base, and the center of the measuring platform's detection surface is aligned with the center of the funnel. The water supply device includes: a water tank, a water trough fitted outside the measuring platform, and a conduit connecting the water trough and the water tank; Furthermore, a scale is provided below the outlet of the funnel, and the scale is aligned with the center of the cone tip formed by the sample on the detection surface.

2. The repose angle measuring instrument according to claim 1, characterized in that: The base is perpendicular to the upright, and the crossbar is perpendicular to the upright.

3. The repose angle measuring instrument according to claim 2, characterized in that, One end of the crossbar is provided with a sliding nut and a lock. The crossbar is slidably connected to the upright through the sliding nut and fixed by the lock.

4. The repose angle measuring instrument according to claim 2, characterized in that, The measuring platform includes: a pedestal and a disc; One side of the disc is fixedly connected to one side of the platform, and the other side of the platform is fixedly connected to the base.

5. The repose angle measuring instrument according to claim 4, characterized in that, The platform is detachably and fixedly connected to the disk.

6. The repose angle measuring instrument according to claim 4, characterized in that, The platform is cylindrical, and the diameter of the platform is smaller than the diameter of the disk.

7. The repose angle measuring instrument according to claim 6, characterized in that, The base is plate-shaped, and the side length of the base is greater than the diameter of the disk.

8. The repose angle measuring instrument according to claim 7, characterized in that, The side length of the water tank is smaller than the side length of the base, but larger than the diameter of the disc.

9. The repose angle measuring instrument according to claim 1, characterized in that, The conduit includes a control valve, which controls the flow rate of water from the water tank to the water trough by opening and closing the control valve.

10. The repose angle measuring instrument according to claim 1, characterized in that, The length of the scale is not less than 1 centimeter.

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