CN210487539U

CN210487539U - Shearing vibration experimental device for particulate matter

Info

Publication number: CN210487539U
Application number: CN201921252491.3U
Authority: CN
Inventors: 黄晨阳; 于洋
Original assignee: Beihang University
Current assignee: Beihang University
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2020-05-08
Anticipated expiration: 2029-08-02

Abstract

The present disclosure relates to a shear vibration experimental apparatus for particulate matter, including: the fixed support comprises a plurality of supporting legs (11) and an annular object placing table (12) fixedly connected above the plurality of supporting legs (11); an annular shearing section comprising an inner cylinder (21) and an outer cylinder (22), the inner cylinder (21) and the outer cylinder (22) being rotatably connected to the inside and outside of the object table (12), respectively, an annular shearing chamber (25) for containing the particulate matter being formed between the inner cylinder (21) and the outer cylinder (22); and a vibrating section including a bottom plate (31) which is provided at the bottom of the annular shearing chamber (25) and can vibrate up and down. Through above-mentioned technical scheme, this openly provided shear vibration experimental apparatus of particulate matter can solve and can't apply the technical problem on particulate matter material simultaneously with annular shear excitation and vibration excitation.

Description

Shearing vibration experimental device for particulate matter

Technical Field

The disclosure relates to the field of scientific experiments, in particular to a shearing vibration experiment device for granular substances.

Background

At present, most of experiment tables for researching the dynamic behavior of the particulate matter are in a single energy input form, or in a parallel plate or annular (inner ring rotating and outer ring fixed) shearing mode, or in an excitation mode of a piston or a vibration table.

The parallel plate shearing device applies a shearing action with a continuously reversed direction to particles in a certain closed system, and cannot be used for researching the influence of continuous shearing in a constant direction on the particles; the annular shearing device with the inner ring rotating and the outer ring fixed has limited research content because the speed of a shear band with a certain radius is not zero. In addition, because most of the existing experiment tables for the kinetic behavior of the particulate matter are in a single energy input form, the experimental research which can be carried out is limited.

SUMMERY OF THE UTILITY MODEL

The purpose of this disclosure is to provide a shear vibration experimental apparatus of particulate matter, this shear vibration experimental apparatus of particulate matter can solve and can't apply the technical problem on particulate matter material simultaneously with the vibration excitation annular shear excitation.

In order to achieve the above object, the present disclosure provides a shear vibration experiment apparatus for a particulate matter, comprising: the fixed support comprises a plurality of support legs and an annular object placing table fixedly connected above the plurality of support legs; an annular shearing part which comprises an inner cylinder and an outer cylinder, wherein the inner cylinder and the outer cylinder are respectively and rotatably connected with the inner side and the outer side of the object placing table, and an annular shearing chamber for containing the granular substances is formed between the inner cylinder and the outer cylinder; and the vibrating part comprises a bottom plate which is arranged at the bottom of the annular shearing chamber and can vibrate up and down.

Optionally, the annular cutout comprises: the first bearing is connected to the inner side of the object placing table, the first bearing comprises a first inner ring and a first outer ring which can rotate relatively, the first outer ring is fixedly connected with the inner side of the object placing table, and the inner cylinder is fixedly connected with the first inner ring; and the second bearing is connected to the outer side of the object placing table, the second bearing comprises a second inner ring and a second outer ring which can rotate relatively, the second inner ring is fixedly connected with the outer side of the object placing table, and the outer cylinder is fixedly connected with the second outer ring.

Optionally, a plurality of first glue nails are circumferentially arranged below the first outer ring, and the first outer ring is fixedly connected to the inner side of the object placing table through the plurality of first glue nails; the lower side of the second inner ring is provided with a plurality of third rubber nails along the circumferential direction, and the second inner ring is fixedly connected with the outer side of the object placing table through a plurality of third rubber nails.

Optionally, the bottom plate is fixedly connected to the upper surfaces of the first outer ring and the second inner ring.

Optionally, a plurality of second glue nails are circumferentially arranged above the first inner ring, and the inner wall of the inner cylinder is tightly propped against the outer side faces of the plurality of second glue nails, so that the inner cylinder and the first inner ring are relatively fixed; and a plurality of fourth rubber nails are arranged above the second outer ring along the circumferential direction, and the outer wall of the outer cylinder is tightly propped against the inner side surfaces of the plurality of fourth rubber nails, so that the outer cylinder and the second outer ring are relatively fixed.

Optionally, the device further comprises a first driving element for driving the inner cylinder to rotate and a second driving element for driving the outer cylinder to rotate, the first driving element is a first motor, an output end of the first motor is sleeved with a first rotating wheel so as to drive the first inner ring to rotate through the first rotating wheel, the second driving element is a second motor, and an output end of the second motor is sleeved with a second rotating wheel so as to drive the second outer ring to rotate through the second rotating wheel.

Optionally, the first runner and the second runner are rubber rings respectively.

Optionally, the first motor and the second motor are motors capable of bidirectional output, and an electronic governor is connected to the first motor and the second motor.

Optionally, a vibration motor is connected to the bottom surface of the bottom plate.

Optionally, the bottom plate superposes on putting the thing platform top, put the thing platform and seted up and dodge the hole in order to with vibrating motor installs on the bottom plate.

Through above-mentioned technical scheme, the fixed bolster among this particulate matter's the shearing vibration experimental apparatus that this disclosure provided can be fixed on the experiment platform through anchor clamps or other heavy objects, and the annular on the fixed bolster puts the thing platform and can be used for installing annular shearing portion and vibration portion. The inner cylinder and the outer cylinder of the annular shearing part are rotatably connected to the inner side and the outer side of the object placing table respectively so as to enclose an annular shearing chamber, the granular substances are placed in the annular shearing chamber, and annular shearing excitation can be applied to the granular substances through rotation of the inner cylinder and the outer cylinder. The bottom plate of the vibrating part is arranged at the bottom of the annular shearing chamber, and when the bottom plate vibrates up and down, the vibrating part can apply vibration excitation to the granular materials in the annular shearing chamber. In addition, since both the inner and outer cylinders are capable of rotating, the inner and outer cylinders can be rotated in opposite directions to null the velocity of the shear band at a radius in the annular shear chamber, or one of the inner and outer cylinders can be stationary while the other is rotating, thus providing various forms of annular shear excitation of the particulate matter in the annular shear chamber. Because bottom plate, inner cylinder, outer cylinder mutually noninterfere when the motion, consequently, the shear vibration experimental apparatus of particulate matter that this disclosure provided can be according to the experiment needs, applys vibration excitation and annular shear excitation simultaneously to particulate matter, or applys one of vibration excitation and annular shear excitation to particulate matter to the extension is through the experimental content that the shear vibration experimental apparatus that this disclosure provided can go on, enlarges this experimental apparatus's application scope.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a schematic view of an angle of an experimental apparatus for shear vibration of particulate matter in an embodiment of the present disclosure;

FIG. 2 is a schematic view of another angle of a shear vibration experimental apparatus for particulate matter in an embodiment of the present disclosure;

FIG. 3 is a front view of a shear vibration experimental apparatus of particulate matter in an embodiment of the present disclosure;

FIG. 4 is a top view of an apparatus for shear vibration testing of particulate matter in an embodiment of the present disclosure;

fig. 5 is a top view of the placement table with the first bearing and the second bearing of the apparatus for shear vibration testing of particulate matter according to the embodiment of the present disclosure.

Description of the reference numerals

11-supporting legs, 12-object placing table, 121-avoiding hole, 21-inner cylinder, 22-outer cylinder, 23-first bearing, 231-first inner ring, 232-first outer ring, 233-first ball, 24-second bearing, 25-annular shearing chamber, 241-second inner ring, 242-second outer ring, 243-second ball, 31-bottom plate, 41-first motor, 411-first rotating wheel, 42-second motor, 421-second rotating wheel, 5-vibrating motor, 61-first glue nail, 62-second glue nail, 63-third glue nail and 64-fourth glue nail.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, the use of the directional words such as "upper and lower" in the case where no description is made to the contrary generally means the upper and lower in the normal use state of the apparatus for testing shear vibration of particulate matter provided in the present disclosure; "inner and outer" refer to the inner and outer relative to the contour of the respective component. The terms "first," "second," and the like, as used in this disclosure, are intended to distinguish one element from another, and not necessarily for sequential or importance. In addition, when the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated.

According to the specific embodiment of the present disclosure, there is provided a shear vibration experiment apparatus for particulate matter, including a fixed bracket, an annular shearing portion and a vibration portion, wherein the fixed bracket includes a plurality of support legs 11 and an annular object placing table 12 fixedly connected above the plurality of support legs 11, the annular shearing portion includes an inner cylinder 21 and an outer cylinder 22, the inner cylinder 21 and the outer cylinder 22 are rotatably connected to the inner side and the outer side of the object placing table 12, an annular shearing chamber 25 for containing particulate matter is formed between the inner cylinder 21 and the outer cylinder 22, and the vibration portion includes a bottom plate 31 disposed at the bottom of the annular shearing chamber 25, as shown in fig. 1, 2 and 4. Wherein, the central axes of the inner cylinder 21, the outer cylinder 22, the bottom plate 31 and the object placing table 12 are collinear.

Through above-mentioned technical scheme, the fixed bolster among the shearing vibration experimental apparatus of particulate matter that this disclosure provided can be fixed on the experiment platform through anchor clamps or other heavy objects, and annular thing platform 12 of putting on the fixed bolster can be used for installing annular shearing portion and vibration portion. Wherein the inner cylinder 21 and the outer cylinder 22 of the annular shearing portion are rotatably connected to the inner side and the outer side of the object placing table 12, respectively, so as to enclose an annular shearing chamber 25, and the particulate matter is placed in the annular shearing chamber 25, and the annular shearing excitation can be applied to the particulate matter by the rotation of the inner cylinder 21 and the outer cylinder 22. The bottom plate 31 of the vibrating section is provided at the bottom of the annular shearing chamber 25, and when the bottom plate vibrates up and down, it is possible to apply a vibration excitation to the particulate matter in the annular shearing chamber 25. In addition, since both the inner cylinder 21 and the outer cylinder 22 are capable of rotating, the inner cylinder 21 and the outer cylinder 22 may rotate in opposite directions to null the velocity of the shear band at a radius in the annular shear chamber 25, or one of the inner cylinder 21 and the outer cylinder 22 may rotate while the other is stationary, thus providing various forms of annular shear stimulation to the particulate matter in the annular shear chamber 25. Because the bottom plate 31, the inner cylinder 21 and the outer cylinder 22 do not interfere with each other when moving, the shear vibration experimental apparatus for particulate matter provided by the present disclosure can simultaneously apply vibration excitation and annular shear excitation to the particulate matter or apply one of vibration excitation and annular shear excitation to the particulate matter according to experimental needs, so as to expand experimental contents that can be performed by the shear vibration experimental apparatus provided by the present disclosure, and expand the application range of the experimental apparatus.

In order to enable the inner cylinder 21 and the outer cylinder 22 to rotate relative to the object placing table 12, the annular cutout portion may include a first bearing 23 and a second bearing 24, the first bearing 23 is connected to the inner side of the object placing table 12 and includes a first inner ring 231 and a first outer ring 232 capable of rotating relative to each other, the first outer ring 232 is fixedly connected to the inner side of the object placing table 12, the inner cylinder 21 is fixedly connected to the first inner ring 231, the second bearing 24 is connected to the outer side of the object placing table 12 and includes a second inner ring 241 and a second outer ring 242 capable of rotating relative to each other, the second inner ring 241 is fixedly connected to the outer side of the object placing table 12, and the outer cylinder 22 is fixedly connected to the second outer ring 242, as shown with reference to fig. 2. The first balls 233 are disposed between the first inner ring 231 and the first outer ring 232, and because the first outer ring 232 is fixedly connected to the inner side of the object placing table 12, the first inner ring 231 can rotate relative to the first outer ring 232 and the object placing table 12 through the first balls 233, so that the inner cylinder 21 fixedly connected to the upper side of the first inner ring 231 can rotate relative to the object placing table 12. And the second ball 243 is disposed between the second inner ring 241 and the second outer ring 242, and since the second inner ring 241 is fixedly connected to the outer side of the object placing table 12, the second outer ring 242 can rotate relative to the second inner ring 241 and the object placing table 12 via the second ball 242, so that the outer cylinder 22 fixedly connected above the second outer ring 242 can rotate relative to the object placing table 12.

In embodiments of the present disclosure, the fixed connection between the first outer ring 232 and the inside of the object table 12 and the fixed connection between the second inner ring 241 and the outside of the object table 12 may be configured in any suitable manner. Optionally, referring to fig. 1 to 5, a plurality of first glue nails 61 may be disposed circumferentially below the first outer ring 232, the first outer ring 232 is fixedly connected to the inner side of the object placing table 12 through the plurality of first glue nails 61, and the first glue nails 61 are disposed below the first outer ring 232, so that the first glue nails 61 can be prevented from entering the annular shearing chamber 25 above to interfere with particulate matter. The lower part of the second inner ring 241 can be provided with a plurality of third glue nails 63 along the circumferential direction, the second inner ring 241 is fixedly connected to the outer side of the object placing table 12 through the plurality of third glue nails 63, the third glue nails 63 are arranged below the second inner ring 241, and the third glue nails 63 can be prevented from entering the annular shearing chamber 25 above to interfere with the particulate matters.

In order to prevent the vibration of the bottom plate 31 from interfering with the rotation of the inner and

outer cylinders

21 and 22, the bottom plate 31 may be fixedly coupled to the upper surfaces of the first and second

outer rings

232 and 241, as shown in fig. 1, 2, and 4. The inner and outer rings of the bottom plate 31 are fixedly connected to the first and second

outer rings

232 and 241, respectively, so that the bottom plate 31 is not in contact with the inner and

outer cylinders

21 and 22.

In particular embodiments of the present disclosure, the fixed connection between the first inner ring 231 and the inner cylinder 21 and the fixed connection between the second outer ring 242 and the outer cylinder 22 may be configured in any suitable manner. Optionally, referring to fig. 1 to 5, a plurality of second glue nails 62 may be circumferentially disposed above the first inner ring 231, the inner wall of the inner cylinder 21 abuts against the outer side surfaces of the plurality of second glue nails 62 to radially limit the inner cylinder 21, and the inner cylinder 21 is circumferentially limited and axially limited by static friction force, so that the inner cylinder 21 and the first inner ring 231 are relatively fixed, and when the first inner ring 231 drives the second glue nails 62 to rotate, the inner cylinder 21 can rotate together with the first inner ring 231 and the second glue nails 62 under the action of the static friction force between the first inner ring 231 and the second glue nails 62. The top of second outer lane 242 can be provided with a plurality of fourth glue nails 64 along circumference, the outer wall of outer cylinder 22 is tight with the medial surface top of a plurality of fourth glue nails 64, it is radial spacing to carry out outer cylinder 22, and carry out circumference spacing and axial spacing to outer cylinder 22 through static friction power, thereby make relatively fixed between outer cylinder 22 and the second outer lane 242, when second outer lane 242 drives fourth glue nail 64 and rotates, outer cylinder 22 can be under the effect of the static friction power between with fourth glue nail 64, rotate along with second outer lane 242 and fourth glue nail 64.

In order to drive the inner cylinder 21 and the outer cylinder 22 to rotate, the shear vibration experiment apparatus for particulate matter provided by the present disclosure may further include a first driving member for driving the inner cylinder 21 to rotate and a second driving member for driving the outer cylinder 22 to rotate.

In particular embodiments of the present disclosure, the first and second drivers may be configured in any suitable manner. Alternatively, referring to fig. 1 to 4, the first driving member may be a first motor 41, an output end of the first motor 41 is sleeved with a first rotating wheel 411 to drive the first inner ring 231 to rotate through the first rotating wheel 411, the second driving member may be a second motor 42, and an output end of the second motor 42 is sleeved with a second rotating wheel 421 to drive the second outer ring 242 to rotate through the second rotating wheel 421. The first motor 41 and the second motor 42 can be respectively powered by LiPo batteries of 3S 2200mAh, so as to simplify the structure of the experimental device, and the experimental device can operate without depending on a 220v power supply, and is highly mobile. The first motor 41 and the second motor 42 may drive the first inner ring 231 and the second outer ring 242 to rotate, respectively, thereby driving the inner cylinder 21 and the outer cylinder 22 to rotate, such that the rotations of the inner cylinder 21 and the outer cylinder 22 are independent of each other, providing multiple annular shear excitation patterns for the particulate matter in the annular shear chamber 25.

In particular embodiments of the present disclosure, first wheel 411 and second wheel 421 may be configured in any suitable manner. Alternatively, as shown in fig. 1 to 4, the first rotating wheel 411 and the second rotating wheel 421 may be rubber rings respectively, so as to drive the first inner ring 231 and the second outer ring 242 to rotate through the static friction force, and when the experimental device is installed, only the rubber rings need to be tightly pressed against the first inner ring 231 and the second outer ring 242 respectively, so that the structure and the installation process of the experimental device can be simplified. In addition, the first and

second pulleys

411 and 421 may be further configured as driving gears connected to output ends of the first and

second motors

41 and 42, respectively, and the first and second

inner rings

231 and 242 may be configured as driven gears capable of meshing with the first and

second pulleys

411 and 421, respectively, such that the first and

second pulleys

411 and 421 rotate the first and second

inner rings

231 and 242, respectively, through gear transmission. The present disclosure is not so limited.

In order to make the rotation direction and the rotation speed of the inner cylinder 21 and the outer cylinder 22 adjustable, the first motor 41 and the second motor 42 may be motors capable of bidirectional output, and electronic governors are connected to the first motor 41 and the second motor 42. Wherein, electronic governor can with electrically transfer controller communication connection, the experimenter can be through adjusting the knob of electrically transferring the controller for electrically transfer controller can output signal for electronic governor, thereby can adjust the rotational speed and the turning to of first motor 41 and second motor 42 respectively. Meanwhile, the electric tuning controller can be connected with the single chip microcomputer to realize the detection of the rotating speed, and in the later period of the experiment, the single chip microcomputer can be used for replacing the electric tuning controller, directly giving out a required rotating speed function, inputting signals to the electronic speed regulator, and further controlling the rotating speed and the rotating direction of the first motor 41 and the second motor 42.

In order to enable the bottom plate 31 to vibrate up and down, a vibration motor 5 may be connected to the bottom surface of the bottom plate 31, and as shown in fig. 2 and 3, a plurality of vibration motors 5 may be connected to the bottom surface of the bottom plate 31 to apply vibration excitations of different strengths to the particulate matter in the annular shearing chamber 25 by turning on different numbers of vibration motors 5. In addition, the vibration motor 5 can be powered by a dry battery, so that the structure of the experimental device is simplified, the operation of the experimental device is independent of a 220v power supply, and the mobility is strong.

In order to fixedly connect the vibration motor 5 to the bottom surface of the bottom plate 31, the bottom plate 31 may be stacked above the object table 12, the object table 12 is opened with an escape hole 121 to mount the vibration motor 5 on the bottom plate 31, and the vibration motor 5 can directly transmit the vibration excitation to the particulate matter in the annular shearing chamber 25 through the bottom plate 31.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. A shear vibration testing apparatus for particulate matter, comprising:

the fixed support comprises a plurality of supporting legs (11) and an annular object placing table (12) fixedly connected above the plurality of supporting legs (11),

an annular shearing section comprising an inner cylinder (21) and an outer cylinder (22), said inner cylinder (21) and said outer cylinder (22) being rotatably connected to the inside and outside of said object table (12), respectively, an annular shearing chamber (25) for containing said particulate matter being formed between said inner cylinder (21) and said outer cylinder (22), and

and a vibrating part which comprises a bottom plate (31) which is arranged at the bottom of the annular shearing chamber (25) and can vibrate up and down.

2. A shear vibration testing apparatus for particulate matter according to claim 1, wherein said annular shearing section comprises:

the first bearing (23) is connected to the inner side of the object placing table (12), the first bearing (23) comprises a first inner ring (231) and a first outer ring (232) which can rotate relatively, the first outer ring (232) is fixedly connected with the inner side of the object placing table (12), and the inner cylinder (21) is fixedly connected with the first inner ring (231); and

the second bearing (24) is connected to the outer side of the object placing table (12), the second bearing (24) comprises a second inner ring (241) and a second outer ring (242) which can rotate relatively, the second inner ring (241) is fixedly connected with the outer side of the object placing table (12), and the outer cylinder (22) is fixedly connected to the second outer ring (242).

3. The experimental apparatus for shearing and vibrating particulate matter as defined in claim 2, wherein a plurality of first glue nails (61) are circumferentially arranged below the first outer ring (232), and the first outer ring (232) is fixedly connected to the inner side of the object placing table (12) through the plurality of first glue nails (61);

a plurality of third rubber nails (63) are arranged below the second inner ring (241) along the circumferential direction, and the second inner ring (241) is fixedly connected to the outer side of the object placing table (12) through the plurality of third rubber nails (63).

4. A shear vibration testing apparatus for particulate matter according to claim 3, wherein said bottom plate (31) is fixedly attached above said first outer ring (232) and said second inner ring (241).

5. The experimental device for the shear vibration of the particulate matter according to claim 2, wherein a plurality of second glue nails (62) are circumferentially arranged above the first inner ring (231), and the inner wall of the inner cylinder (21) is tightly pressed against the outer side surfaces of the plurality of second glue nails (62), so that the inner cylinder (21) and the first inner ring (231) are relatively fixed;

a plurality of fourth rubber nails (64) are circumferentially arranged above the second outer ring (242), and the outer wall of the outer cylinder (22) is tightly pressed against the inner side surfaces of the fourth rubber nails (64), so that the outer cylinder (22) and the second outer ring (242) are relatively fixed.

6. The experimental apparatus for shear vibration of particulate matter as claimed in claim 2, further comprising a first driving member for driving said inner cylinder (21) to rotate and a second driving member for driving said outer cylinder (22) to rotate, wherein said first driving member is a first motor (41), an output end of said first motor (41) is sleeved with a first rotating wheel (411) to drive said first inner ring (231) to rotate through said first rotating wheel (411), said second driving member is a second motor (42), an output end of said second motor (42) is sleeved with a second rotating wheel (421) to drive said second outer ring (242) to rotate through said second rotating wheel (421).

7. A shear vibration testing apparatus for particulate matter according to claim 6, wherein said first runner (411) and said second runner (421) are rubber rings, respectively.

8. The apparatus for testing the shear vibration of particulate matter according to claim 6, wherein said first motor (41) and said second motor (42) are bi-directionally outputable motors, and electronic governors are connected to said first motor (41) and said second motor (42).

9. A shear vibration testing apparatus for particulate matter according to claim 1, wherein a vibration motor (5) is connected to the bottom surface of said bottom plate (31).

10. Apparatus for testing the shear vibration of particulate matter according to claim 9, wherein said base plate (31) is superimposed above said platform (12), said platform (12) being provided with relief holes (121) for mounting said vibration motor (5) to said base plate (31).