CN102288095A - Box type measurement device for slide angle of scattered material and measurement method thereof - Google Patents

Abstract

The invention discloses a box-type measuring device for the sliding angle of bulk materials and a measuring method thereof, which belong to the field of precision measurement and include an outer shell, an inner box, a supporting plate, a base and a lifting mechanism. There is a rotatable pallet inside the outer shell, and the rotation of the pallet is controlled by the lifting mechanism set between the base and the pallet. There is a partition in the inner box, and the inner box is placed on the pallet. Change the inclination angle of the internal box to make the measured bulk material in the internal box produce a sliding angle, and the angle of repose of the measured bulk material can be measured through the angle ruler. The invention is fast and practical, can directly read the number of sliding angles, has a simple structure, and is economical and practical. The invention is easy to operate, and can perform level adjustment, tilt angle adjustment, and angle measurement at the same time; it can realize multi-speed, multi-angle, and multi-mode lifting schemes, and can measure the sliding angle of bulk materials very quickly.

Description

A box-type measuring device for sliding angle of bulk materials and its measuring method

technical field

The present invention relates to the field of precision measurement, in particular, it is a box-type measuring device for the sliding angle of bulk materials and its measuring method, which can be used to measure the inclination angle (sliding angle) produced by the sliding of bulk materials, and observe the The local and global movement trends of bulk material flow failure.

Background technique

At present, there are many measurement devices for the natural angle of repose and sliding angle of bulk materials. Among them, the angle of repose refers to the angle between the free surface and the horizontal plane when the free surface of the accumulation of bulk materials is in the limit state of equilibrium in the gravitational field. It is slightly smaller than the slip angle at which the landslide begins to slide; the slip angle is the smallest slope angle (measured from the horizontal) at which any loose material such as soil or debris begins to slide.

For example, the patent number is ZL20071007141.6 for the sandy soil static angle of repose measuring instrument and the patent is ZL20092015880.4 for the dune sand sand angle of repose rapid testing device. However, when the former measures the sliding angle of bulk materials, the integrity of the device is not strong, and the structure is exposed. When the inclination angle is adjusted, the angle changes are very uneven, which is inconvenient to intuitively control, and the measurement range is very limited. In the latter case, when the angle of repose is measured by the fixed funnel method, other factors interfere to a certain extent, especially the impact of the drop impulse on the result. And most of the current measuring devices are manual, which cannot be adjusted very slowly, and there is no integral, convenient and quick reading method.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies and defects of the prior art, and propose a sliding corner box measuring device for bulk materials and a measuring method thereof.

The present invention is a box-type measuring device for the sliding angle of bulk materials, comprising an outer shell, an inner box, a pallet, a base, and a lifting mechanism;

Wherein, the outer casing is a vertical rectangular cylindrical structure installed on the base. A supporting board baffle is installed on one side inner wall of the outer shell, and a supporting board is arranged horizontally in the outer housing. At least one observation port is opened on the two adjacent sides of the side where the board is located, so that the inside of the external casing can be observed through the observation port. The pallet rotating shaft is perpendicular to the two adjacent sides where the pallet baffle is located. The supporting plate in the horizontal state is overlapped with the supporting plate baffle, and the supporting plate is limited by the supporting plate baffle. The supporting plate rotating shaft is close to the side opposite to the side where the supporting plate baffle is located; a baffle is fixedly installed on the supporting plate, and the baffle is perpendicular to the supporting plate and parallel to the side where the supporting plate baffle is located.

The inner box is a rectangular cylindrical structure with a closed bottom, placed on the pallet, and located between the baffle plate and the side where the support plate is located. The inner box is made of transparent material. A partition A and a partition B are vertically installed on the inner bottom surface of the inner box. The partitions A and B are parallel to each other, and both are parallel to the side of the inner box. The two vertical sides of the partition A and the partition B are fixedly connected to the opposite side surfaces of the inner box body. The height of the partition A is greater than that of the partition B, and both are smaller than the height of the inner box. The distance from the partition A to the side inner wall where the support plate is located is smaller than the distance from the partition B to the side inner wall of the outer casing where the support plate is located.

The lifting mechanism includes a bracket rotating bearing, a motor mounting seat, a motor, a lead screw, a lead screw connecting frame and a controller; wherein, the bracket rotating bearing is pivotally connected between the two sides of the external housing, and the bracket rotating bearing is fixedly installed There is a motor mounting seat, and a motor is installed on the motor mounting seat, and the motor is a linear motor. One end of the lead screw is connected to the lead screw connecting frame, and the lead screw connecting frame is fixedly connected to the bottom of the supporting plate, and is located between the baffle plate and the side of the support plate; the other end of the lead screw is threaded to the output end of the motor, or passes through the The output end of the motor and the motor mount. A controller is installed on the base to control the operation of the motor.

At least three leveling screws are evenly installed on the edge of the base in the circumferential direction, and the height of the leveling screws can ensure the level of the outer shell through the knob.

Based on the measurement method of the above-mentioned sliding corner box type measurement device for bulk materials, it is realized through four steps:

Step 1: Adjust the level of the bottom surface of the external shell through the leveling screw;

Step 2: Put bulk materials in the inner box;

Step 3: Change the inclination angle of the internal box;

Start the controller, control the linear motor to work, drive the lead screw to move linearly, and cooperate with the lead screw and the lead screw connecting frame to lift the supporting plate. At this time, the inclination angle of the inner box changes, and the bulk material overflows from the space between the side wall of the inner box adjacent to the partition A and the partition A, and enters into the space between the partition A and the partition B and the partition B and the partition B In the space adjacent to the side wall of the inner box.

Step 4: Measure the sliding angle of the bulk material.

Through the angle ruler, one side of the angle ruler is parallel to the pallet, and the other side is parallel to the inclined surface generated by the sliding of the bulk material, and the data of the angle ruler is read.

The advantages of the present invention are:

(1) The present invention can perform horizontal adjustment, tilt angle adjustment, and angle measurement at the same time, and the external box adopts an integrated design, which can effectively prevent interference from other factors;

(2) The invention is easy to operate. By installing partitions of different heights in the inner box, the bulk material to be measured in the inner box can slide multiple times during the rotation of the pallet, which is convenient for the operator in one process. In , multiple sliding angle measurements are taken;

(3) The present invention can realize a multi-speed, multi-angle, and multi-mode lifting scheme through the precise control of the motor, and can measure the sliding angle of bulk materials very quickly.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the device of the present invention;

Fig. 2 is a cross-sectional view of the device structure of the present invention;

Fig. 3 is the structural sectional view in the experiment of device of the present invention;

Fig. 4 is a partial enlarged view of the connection between the leading screw and the leading screw support in the device of the present invention;

Fig. 5 is the connection schematic diagram of leading screw and motor in the device of the present invention;

Fig. 6 is a flow chart of assay method of the present invention;

Fig. 7 is a schematic diagram of the position of the angle ruler when measuring the sliding angle of the bulk material in the present invention.

In the picture:

1-Outer shell 2-Inner box 3-Pallet 4-Base

5-Elevating mechanism 6-Angle ruler 101-Observation port 201-Partition A

202-Separator B 301-Pallet shaft 302-Pallet baffle 303-Baffle

401-leveling screw 501-bracket rotating bearing 502-motor mount 503-motor

504-Lead screw 505-Lead screw connection frame 506-Controller

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings.

The present invention is a box-type measurement device for sliding angle of bulk materials, comprising an outer casing 1, an inner box 2, a supporting plate 3, a base 4 and a lifting mechanism 5, as shown in Fig. 1 and Fig. 2 .

Wherein, the outer housing 1 is a rectangular cylindrical structure with a closed bottom, and a rectangular viewing port 101 is symmetrically opened above the front and rear sides of the outer housing 1, and the left side, the right side and the top side of the viewing port 101 are close to the side. The left side, the right side and the top side, and the observation port 101 is sealed by transparent glass or plastic, so that it can pass through the observation port 101 to observe the inside of the external housing 1. The outer housing 1 is horizontally provided with a supporting plate 3 that is equal in size to the horizontal section inside the outer housing. The supporting plate 3 is connected between the front and rear sides of the outer housing 1 through the supporting plate rotating shaft 301. The supporting plate rotating shaft 301 is close to the outer housing. The left side of the body 1 is perpendicular to the front side and the rear side of the outer shell 1, and is located below the horizontal plane where the bottom edge of the viewing port 101 is located. Thus the pallet 3 can rotate inside the outer casing 1 with the rotation of the pallet rotating shaft 301 . A pallet baffle 302 is installed on the right side of the outer casing 1, the pallet 3 in the horizontal state overlaps with the pallet baffle 302, and the pallet 302 in the horizontal state is used to align the pallet in the horizontal state. 3 limit supports, so that the supporting plate 3 will not continue to rotate to the right. In the above structure, the supporting plate 3 in the horizontal state is coplanar with the horizontal plane where the bottom edge of the viewing port 101 is located. A baffle 303 is installed on the supporting plate 3 , and the baffle 303 is perpendicular to the supporting plate 3 and parallel to the left side of the outer casing 1 .

The inner box 2 is a rectangular structure, made of transparent glass or plastic, placed on the pallet 3, and located between the baffle plate 303 and the right side of the inner box 2 . A partition A201 and a partition B202 are vertically installed in the inner box 2, and the vertical sides of the partition A201 and the partition B202 are respectively connected to the opposite sides of the inner box 2, and the height of the partition A201 is greater than that of the partition B202 the height of. The partition A201 and the partition B202 are located on the bottom surface of the inner box body 2 , on two trisectors parallel to the left side and the right side of the inner box body 2 . The distance between the partition A201 and the inner wall of the right side of the outer casing 1 is smaller than the distance between the partition B202 and the inner wall of the right side of the outer casing 1 . When the pallet 3 is lifted, the inner box body 2 will slide on the pallet 3 to the left of the outer shell 1 due to gravity, and the sliding inner box body 2 will be limited by the baffle plate 303 on the pallet 3, As shown in Figure 3.

The lifting mechanism 5 includes a bracket rotating bearing 501 , a motor mounting base 502 , a motor 503 , a lead screw 504 , a lead screw connecting frame 505 and a controller 506 . Wherein, the front and rear sides of the outer casing 1 are pivotally connected with a bracket rotating bearing 501 , and the bracket rotating bearing 501 is parallel to the supporting plate rotating shaft 301 . A motor mount 502 is fixedly installed on the bracket rotating bearing 501 , and the motor mount 502 can rotate with the rotation of the bracket rotating bearing 501 . A motor 503 is installed on the motor mounting base 502, and the motor 503 is a linear motor. The output end of the motor 503 is threadedly connected to one end of the lead screw 504, and the other end of the lead screw 504 is connected to the lead screw connecting frame 505. 504 can move linearly with the rotation of the output end of the motor 503; the lead screw connecting frame 505 is close to the right side of the outer casing 1 and is fixedly connected with the bottom of the supporting plate 3. The controller is installed on the bottom surface and is used to drive the linear motor to work. The linear motor drives the lead screw to move, thus the supporting plate 3 is lifted up or flattened down by the linear motion of the lead screw 504 . When the supporting plate 3 was lifted, the lead screw connecting frame 505 would produce a displacement to the left, and the bracket rotating bearing 501 would rotate to the left, driving the motor mount 502 and the motor 503 to rotate to the left together, and the lead screw 504 would also rotate to the left. The same motor 503 rotates to the left, which can offset the leftward displacement produced by the screw connecting frame 505. The screw connection frame 505 is a "U"-shaped frame composed of two side bars 505a and a bottom bar 505b, the two side bars 505a are vertically connected to the bottom of the supporting plate 3, the bottom bar 505b is parallel to the supporting plate 3, and A lead screw 504 is connected, as shown in FIG. 4 , the rotation of the lead screw in the axial direction can be restricted through the bottom rod. The length of the leading screw 504 is determined according to the angle at which the supporting plate 3 needs to be inclined. If the angle at which the supporting plate 3 needs to be inclined is relatively large, then a longer leading screw 504 is needed, so that the leading screw 504 is threaded with the output end of the motor 3. One end of the connection may extend downward through the motor mount 502, as shown in FIG. 5 .

At least three leveling screws 401 are uniformly installed on the periphery of the base 4 , and the height of the leveling screws 401 can ensure the level of the outer shell through the knob.

The present invention also proposes a measurement method based on the above-mentioned measurement device, which is realized through the following four steps, as shown in Figure 6:

Step 1: Adjust the level of the bottom surface of the outer shell 1;

The outer casing 1 is adjusted by the leveling screw 401, and the level is measured by the angle ruler until the air bubble of the angle ruler is centered.

Step 2: Put the bulk material to be measured in the inner box 2;

Put the bulk material to be tested in the space between the partition A201 in the inner box 2 and the right side wall of the inner box 2, so that the bulk material is in a natural accumulation state. The position where the bulk material is put into the inner box 2 can be determined according to the needs of the experiment.

Step 3: According to the needs of measurement, change the inclination angle of the inner box 2;

Start the controller 506, control the motor 503 to work through the controller 506 to make the lead screw 504 move linearly, and cooperate with the lead screw connecting frame 505 through the lead screw 504 to lift the right end of the supporting plate 3; at this time, the inclination angle of the inner box 2 changes , the bulk material overflows from the space between the partition A201 and the right side wall of the inner box body 2, and enters the space between the partition A201 and the partition B202, the bulk material in the space between the partition A201 and the partition B202 The material can continue to overflow into the space between the partition B202 and the left side wall of the inner box body 2 .

Step 4: Measure the sliding angle of the bulk material;

One side of the angle ruler 6 is parallel to the supporting plate 3, and the other side is parallel to the inclined surface produced by the sliding of the bulk material. At this time, the number displayed on the angle ruler 6 is the sliding angle of the bulk material.

Claims (3)

1. A box-type measuring device for the sliding angle of bulk materials, characterized in that: it includes an outer casing, an inner box, a pallet, a base and a lifting mechanism; Wherein, the outer shell is a vertical rectangular cylindrical structure, installed on the base; one side inner wall of the outer shell is equipped with a supporting board baffle, and a supporting plate is horizontally arranged in the outer housing, and the supporting plate is connected to the shaft through the supporting plate rotating shaft. Between the two side inner walls adjacent to the side where the pallet baffle is located, at least one observation port is opened on the two adjacent sides of the side where the pallet baffle is located; The two sides are vertical; the supporting plate in the horizontal state is overlapped with the supporting plate baffle, and the supporting plate is limited by the supporting plate baffle; the rotating shaft of the supporting plate is close to the side opposite to the side where the supporting plate baffle is located; A baffle is fixedly installed, and the baffle is perpendicular to the supporting plate and parallel to the side of the supporting plate where the baffle is located; The internal box is a rectangular cylindrical structure with a closed bottom, placed on the pallet between the baffle and the side where the pallet baffle is located; the internal box is made of transparent material; the inner surface of the bottom of the internal box is vertical A partition A and a partition B are installed; the partition A and the partition B are parallel to each other, and both are parallel to the side of the inner box body; the two vertical sides of the partition A and the partition B are opposite to the inner box body The side is fixed; the height of partition A is greater than that of partition B, and both are smaller than the height of the inner box; the distance between partition A and the inner wall of the side where the pallet baffle is located is smaller than that of partition B to the outer shell where the pallet baffle is located The distance from the side wall of the body; The lifting mechanism includes a bracket rotating bearing, a motor mounting seat, a motor, a lead screw, a screw connecting frame and a controller; wherein, the bracket rotating bearing is pivotally connected between the two sides of the outer housing, and the bracket rotating bearing is connected to the The rotating shaft of the supporting plate is parallel; the motor mounting base is fixedly installed on the rotating bearing of the bracket, and the motor is installed on the motor mounting base, and the motor is a linear motor; The bottom of the plate is fixed, located between the baffle and the side where the baffle is located; the other end of the screw is screwed to the output end of the motor, or passes through the output end of the motor and the motor mounting seat; the controller is installed on the base, It is used to control the operation of the motor; at least 3 leveling screws are evenly installed on the edge of the base in the circumferential direction. 2. A box-type measuring device for the sliding angle of bulk materials as claimed in claim 1, wherein the screw connecting frame is a "U"-shaped frame composed of two side bars and a bottom bar, The two side bars are vertically connected to the bottom of the supporting plate, the bottom bar is parallel to the supporting plate, and the shaft is connected with a lead screw. 3. based on claim 1 a kind of assay method for the box-type assay device for bulk material sliding angle, realize by four steps: Step 1: Adjust the level of the bottom surface of the external shell through the leveling screw; Step 2: Put bulk materials in the inner box; Step 3: Change the inclination angle of the internal box; Start the controller, control the linear motor to work, drive the lead screw to move in a straight line, and lift the pallet through the cooperation of the lead screw and the lead screw connecting frame; at this time, the inclination angle of the internal box changes, and the bulk material is adjacent to the partition A overflow in the space between the inner box side wall and the partition A, and enter the space of the inner box side wall adjacent to the partition A and the partition B and the partition B and the partition B; Step 4: Measure the sliding angle of the bulk material; Through the angle ruler, one side of the angle ruler is parallel to the pallet, and the other side is parallel to the inclined surface generated by the sliding of the bulk material, and the data of the angle ruler is read.

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