CN108535179B - Mechanical property testing platform for linear reciprocating shearing motion of particulate matter - Google Patents
Mechanical property testing platform for linear reciprocating shearing motion of particulate matter Download PDFInfo
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- CN108535179B CN108535179B CN201810390837.XA CN201810390837A CN108535179B CN 108535179 B CN108535179 B CN 108535179B CN 201810390837 A CN201810390837 A CN 201810390837A CN 108535179 B CN108535179 B CN 108535179B
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- 239000013618 particulate matter Substances 0.000 title claims abstract description 48
- 238000012360 testing method Methods 0.000 title claims abstract description 27
- 238000010008 shearing Methods 0.000 title claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 50
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 239000011236 particulate material Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 230000003213 activating effect Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000002245 particle Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract 1
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 238000002474 experimental method Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/02—Measuring coefficient of friction between materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
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Abstract
The invention relates to a mechanical property testing platform for linear reciprocating shearing motion of particulate matter, which comprises a loading box for loading the particulate matter to be tested, wherein an upper clamping plate is arranged in a loading mechanism and moves in a reciprocating manner along the horizontal direction; the lower plate that sets up below the punch holder is used for supporting the punch holder and with punch holder synchronous reciprocating motion, the punch holder is arranged with the punch holder clearance and is connected through pressure sensor between the two, pressure sensor is used for gathering the power of the vertical direction of pressure of particulate matter effect in the vertical direction of punch holder, actuating mechanism is used for driving punch holder and lower plate horizontal direction reciprocating motion, the last tangential force sensor who is used for gathering, the sliding friction force of lower plate horizontal direction that is provided with of actuating mechanism, this experimental facilities is comparatively perfect, measuring result is comparatively accurate, can be accurate measure the coefficient of friction of particulate matter and the evolution process of the reciprocal shearing motion in-process particle system macroscopic mechanical properties of real-time supervision, in order to explore the complicated mechanical properties of particulate matter.
Description
Technical Field
The invention relates to the technical field of particulate matter test equipment, in particular to a particulate matter linear reciprocating shearing motion mechanical property test platform.
Background
The granular substance is a complex system formed by interaction of a large number of discrete solid particles, has a special movement law different from that of common solids and fluids, shows complex mechanical characteristics, and is one of the leading edges of solidification state physical research. Many natural disasters such as avalanches, debris flows, landslides and the like are closely related to the mechanical properties of the particulate matters, and the formation, triggering, slippage and the like of fracture zones of earthquake disasters are greatly dependent on the motion properties of the particulate matters. Shearing is a common movement mode in a particle system, is common in our life, and it is also one of the hot spots in scientific research to explore the mechanical properties of particle substances in the shearing process.
In the mechanical research experiment equipment for the particulate matter, a general experiment device is simple and crude, particularly in the shearing motion process, only a single shearing process can be measured mostly, and the change process of the macroscopic mechanical property of the particulate matter in the reciprocating process cannot be obtained.
Disclosure of Invention
The purpose of the invention is: the novel testing platform for the mechanical properties of the linear reciprocating shearing motion of the particulate matter is provided, the friction coefficient of the particulate matter can be accurately measured, and the evolution process of the macroscopic mechanical properties of a particulate system in the reciprocating shearing motion process can be monitored in real time, so that the complex mechanical properties of the particulate matter can be explored.
In order to achieve the purpose, the invention adopts the technical scheme that:
a mechanical property testing platform for linear reciprocating shearing motion of particulate matter,
a cartridge for loading a particulate material to be tested;
the upper clamping plate is arranged in the charging mechanism and moves back and forth along the horizontal direction;
the lower clamping plate is arranged below the upper clamping plate and used for supporting the upper clamping plate and synchronously reciprocating with the upper clamping plate;
the lower clamping plate and the upper clamping plate are arranged in a clearance mode and are connected through a pressure sensor, and the pressure sensor is used for collecting the pressure of the upper clamping plate and the lower clamping plate in the vertical direction;
the driving mechanism is used for driving the upper clamping plate and the lower clamping plate to reciprocate in the horizontal direction;
and a tangential force sensor for acquiring the sliding friction force of the upper clamping plate and the lower clamping plate in the horizontal direction is arranged on the driving mechanism.
The invention also has the following features:
the plate surfaces of the upper clamping plate and the lower clamping plate are horizontally arranged at intervals in parallel, supporting mechanisms are arranged on the plate surfaces at two ends of the lower clamping plate, and normal force sensors are arranged below the supporting mechanisms.
The loading box is rectangular, through holes are formed in the box walls on the two sides of the loading box, the upper clamping plate and the lower clamping plate extend out of the through holes and are arranged in a clearance with the upper hole wall and the lower hole wall of the through holes, and the supporting mechanism is arranged on the outer sides of the box walls on the two sides of the loading box.
The working area of the pressure sensor is of a wafer-shaped structure, the pressure sensor is vertically arranged, the upper end and the lower end of the pressure sensor are respectively abutted to the upper plate surface and the lower plate surface of the upper plate and the lower plate, and the two pressure sensors are arranged along the length direction of the upper plate and the lower plate at intervals.
The abutting end of the pressure sensor and the upper clamping plate is provided with a rubber gasket.
The supporting mechanism comprises supporting balls arranged on box walls on two sides of the charging box, the supporting balls are fixed at the upper end of a normal force sensor, and the normal force sensor is fixed at the upper end of the vertical adjusting die table.
The driving mechanism comprises a connecting plate, a floating pin is arranged at the plate end of the connecting plate, the floating pin is vertically arranged in the first through hole and the second through hole in a penetrating mode, and the aperture of the first through hole and the aperture of the second through hole are larger than the rod diameter of the floating pin.
The actuating mechanism is including setting up on the adjustment mould platform on the workstation, the one end of connecting plate is fixed on the adjustment mould platform, be provided with servo motor on the workstation, servo motor's output shaft is provided with the lead screw, the lead screw cooperates with the nut of adjustment mould platform, the length direction level of lead screw just is parallel with the connecting plate, still be provided with displacement sensor on the workstation, displacement sensor is shaft-like and parallel with the lead screw, displacement sensor's the directional adjustment mould platform of rod end.
The testing method for the mechanical property of the shear motion of the particulate matter adopts the platform for testing the mechanical property of the linear reciprocating shear motion of the particulate matter, and comprises the following steps:
the first step is as follows: placing two pressure sensors on the upper plate surface of a lower clamping plate, covering the upper clamping plate above the two pressure sensors, extending an assembly formed by the upper clamping plate, the lower clamping plate and the two pressure sensors out of through holes formed in box walls on two sides of a charging box, and enabling the lower clamping plate to be arranged on supporting balls of a supporting mechanism, so that the lower clamping plate is in contact with the supporting balls;
the second step is that: adjusting the vertical adjusting die table to enable the upper clamping plate and the plate surface of the upper clamping plate to be in a horizontal state, and simultaneously ensuring that an assembly formed by the upper clamping plate, the upper clamping plate and the two pressure sensors is in clearance arrangement with each part of the charging box;
the third step: putting the granular materials into the loading box, and enabling the granular materials to be submerged on the upper plate surface of the upper clamping plate;
the fourth step: adjusting the vertical adjusting module to enable the upper clamping plate to be in contact with the supporting ball of the supporting mechanism;
the fifth step: adjusting the adjusting die table to enable the connecting plate to be in horizontal contact with the upper end of the tangential force sensor, fixing the connecting plate at the upper end of the tangential force sensor by using a bolt, and fixing the tangential force sensor on the adjusting die table;
and a sixth step: applying a heavy object to the position of the box opening of the loading box, and starting a driving mechanism to enable an assembly formed by the upper clamping plate, the lower clamping plate and the two pressure sensors to move back and forth in the horizontal direction;
the seventh step: the data collected by the pressure sensor, the normal force sensor, the tangential force sensor and the displacement sensor are connected with a computer through a collection card, and the computer is used for obtaining the mechanical property data of the shearing movement of the particulate matter.
Compared with the prior art, the invention has the beneficial effects that: the experimental equipment is relatively perfect, the measurement result is relatively accurate, the friction coefficient of the particulate matter can be accurately measured, and the change of a particulate system in the reciprocating shearing motion process can be monitored in real time, so that the complex mechanical property of the particulate matter can be explored.
Drawings
Fig. 1 and fig. 2 are schematic structural diagrams of two viewing angles of a mechanical property testing platform for linear reciprocating shearing motion of particulate matters;
FIG. 3 is a schematic structural view of the mechanical property testing platform for linear reciprocating shearing movement of particulate matter after being moved out of the driving mechanism;
FIG. 4 is a schematic structural diagram of the mechanical property testing platform for linear reciprocating shearing movement of particulate matter after being moved out of the driving mechanism and the upper clamping plate;
FIG. 5 is a schematic view showing the structure of the upper clamping plate, the lower clamping plate, the connecting plate and the cartridge;
FIG. 6 is a schematic structural view of a normal force sensor and a support mechanism.
Detailed Description
The invention will be further explained with reference to fig. 1 to 6:
the utility model provides a mechanical properties test platform of linear reciprocating shear motion of particulate matter which characterized in that:
a cartridge 10 for loading a particulate material to be tested;
an upper clamp plate 20 which is provided in the charging mechanism 10 and reciprocates in the horizontal direction;
a lower clamp plate 30 disposed below the upper clamp plate 20 for supporting the upper clamp plate 20 and reciprocating in synchronization with the upper clamp plate 20;
the lower clamping plate 30 and the upper clamping plate 20 are arranged in a clearance mode and connected through a pressure sensor 40, and the pressure sensor 40 is used for collecting the pressure of the upper clamping plate 20 and the lower clamping plate 30 in the vertical direction;
a driving mechanism for driving the upper and lower clamping plates 20 and 30 to reciprocate horizontally;
the driving mechanism is provided with a tangential force sensor 50 for collecting the sliding friction force of the upper splint 20 and the lower splint 30 in the horizontal direction;
as shown in fig. 1 and 2, the linear mechanical characteristic test of the particulate matter is actually performed by using two upper clamping plates 20 and lower clamping plates 30 arranged at intervals, and arranging a pressure sensor 40 in a gap between the upper clamping plates 20 and the lower clamping plates 30, so that when the particulate matter is loaded in the loading box 10, the particulate matter is in contact with the upper plate surface of the experimental plate 20 and the lower plate surface of the supporting plate 30, and thus, the vertical force transmitted to the experimental plate 20 and the supporting plate 30 by the particulate matter can be effectively collected;
in the process that the driving mechanism drives the upper clamping plate 20 and the lower clamping plate 30 to reciprocate in the horizontal direction, the tangential force sensor 50 can be used for acquiring the friction force generated when the particulate matter is applied to the experiment plate 20 and the supporting plate 30 to move horizontally, and the change characteristic of the friction coefficient between the particulate matter and the plane can be obtained through the mechanical signal data obtained by post-processing analysis;
the upper clamping plate 20 can be provided with different supporting surfaces, frosted surfaces, flat surfaces and the like according to actual test requirements, so that the friction coefficient change characteristics between the particulate matters and different flat surfaces and between the particulate matters can be obtained according to actual conditions.
As a preferable scheme of the present invention, the plate surfaces of the upper clamping plate 20 and the lower clamping plate 30 are arranged horizontally and parallelly at intervals, the lower plate surface at both ends of the lower clamping plate 30 is provided with a supporting mechanism 60, and a normal force sensor 70 is arranged below the supporting mechanism 60;
in order to realize effective support of the upper clamping plate 20 and the lower clamping plate 30, the normal force sensor 70 on the support mechanism 60 can be used for obtaining the support force of the support mechanism 60 on the lower clamping plate 30, the support force is a part of vertically separated particulate matter applied to the upper clamping plate 20, and the sum of the pressure value obtained by the normal force sensor 70 and the pressure value obtained by the pressure sensor 40 is the pressure applied to the upper clamping plate 20 by the particulate matter, so that the structure can effectively improve the accuracy of the vertical pressure value;
preferably, as shown in fig. 3 to 5, the cartridge 10 is rectangular, the cartridge 10 has through holes 11 formed in its two side walls, the upper and lower clamping plates 20 and 30 extend out of the through holes 11 and are spaced apart from the upper and lower walls of the through holes 11, and the supporting mechanisms 60 are disposed on the outer sides of the two side walls of the cartridge 10;
the supporting mechanism 60 is arranged on the outer side of the box walls on the two sides of the charging box 10, so that the two ends of the upper clamping plate 20 and the lower clamping plate 30 are supported, a gap is formed between the upper clamping plate 20 and the lower clamping plate 30 and the upper and lower hole walls of the through hole 11, the influence of the through hole 11 of the charging box 10 on the measuring result is avoided in the movement process, the normal force sensor 70 can also monitor the influence degree of the supporting mechanism 60 on the readings of the pressure sensors 40 pasted on the upper clamping plate 20 and the lower clamping plate 30, and the positions of the upper clamping plate 20 and the lower clamping plate 30 are adjusted through the readings of the normal force sensor 70.
In order to obtain accurate pressure signals, the working area of the pressure sensor 40 is of a wafer-shaped structure, the pressure sensor 40 is vertically arranged, the upper end and the lower end of the pressure sensor 40 are respectively abutted against the upper plate surface and the lower plate surface of the upper clamping plate 20 and the lower plate surface of the lower clamping plate 30, and two pressure sensors 40 are arranged at intervals along the length direction of the upper clamping plate 20 and the lower clamping plate 30;
the working area of the pressure sensor 40 is circular, and the pressure sensor 40 is adhered to the inner side of the upper clamping plate 20 (or the lower clamping plate 30);
furthermore, the abutting end of the pressure sensor 40 and the upper clamping plate 20 is provided with a rubber gasket, and the rubber gasket is used for uniformly transmitting the force applied to the upper clamping plate 20 and the lower clamping plate 30 to the pressure sensor 40 while being used for the upper clamping plate 20 and the lower clamping plate 30, so that the measurement accuracy is improved; in addition, the rubber gasket can also be used for conveniently adjusting the gap between the upper clamping plate 20 and the lower clamping plate 30;
the upper and lower clamping plates 20 and 30 are closed on both sides to prevent particulate matter from entering the gap between the upper and lower clamping plates 20 and 30.
Further, as shown in fig. 3 and 4, the supporting mechanism 60 includes supporting balls 61 provided on both side walls of the cartridge 10, the supporting balls 61 are fixed to upper ends of normal force sensors 70, and the normal force sensors 70 are fixed to upper ends of the vertical adjustment die stages 62;
the design of the supporting balls 61 can adjust the positions of the upper and lower clamping plates 20 and 30 by using the vertical adjusting die table 62, ensure the levelness of the upper and lower clamping plates 20 and 30 and make the movement more stable, thereby making the measured data more stable and accurate.
More preferably, as shown in fig. 2, 3 and 5, one end of each of the lower clamp plate 30 and the upper clamp plate 20 is provided with a first through hole 31 and a second through hole 21, the first through hole 31 and the second through hole 21 are arranged vertically and concentrically, the driving mechanism includes a connecting plate 80, a floating pin 81 is arranged at a plate end of the connecting plate 80, the floating pin 81 is vertically arranged in the first through hole 31 and the second through hole 21, and the aperture of the first through hole 31 and the aperture of the second through hole 21 are larger than the rod diameter of the floating pin 81;
the rod diameter of the floating pin 81 is smaller than the diameters of the first through hole 31 and the second through hole 21, so that the bearing force of the floating pin 81 on the lower clamping plate 30 and the upper clamping plate 20 in the vertical direction is avoided, the fact that the indication number of the pressure sensor 40 in the shearing box is not influenced by the connecting plate in the shearing motion process is guaranteed, and the floating pin 81 can directly penetrate through the first through hole 31 and the second through hole 21 to achieve reciprocating motion of the shearing box.
In order to realize the reciprocating movement of the lower clamping plate 30 and the upper clamping plate 20 in the horizontal direction, the driving mechanism comprises an adjusting die table 82 arranged on a workbench 90, the tangential force sensor 50 is fixed on the adjusting die table 82, one end of a connecting plate 80 is fixed on the tangential force sensor 50, a servo motor 83 is arranged on the workbench 90, an output shaft of the servo motor 83 is provided with a lead screw 831, the lead screw 831 is matched with a nut of the adjusting die table 82, the length direction of the lead screw 831 is horizontal and parallel to the connecting plate 80, a displacement sensor 84 is further arranged on the workbench 90, the displacement sensor 84 is in a rod shape and parallel to the lead screw 831, and the rod end of the displacement sensor 84 points to the adjusting die table 82;
the tangential force sensor 50 is a three-way force sensor, and the tangential force sensor 50 is only used for obtaining a mechanical signal in the horizontal direction, namely, the friction force generated when the particulate matter moves horizontally to the plane can be obtained;
the displacement sensor 84 is used for acquiring the distance of horizontal reciprocating movement of the assembly formed by the upper clamping plate 20, the lower clamping plate 30 and the two pressure sensors 40.
As shown in fig. 6, the vertical adjustment die table 62 includes a first support plate 621 fixed on the workbench 90, a guide rail is vertically arranged on the first support plate 621, a second support plate 622 is arranged on the guide rail, a support column 6221 is arranged on the second support plate 622, an adjustment support 623 is rotatably arranged on the first support plate 621, a ball 6231 is arranged at one end of the adjustment support 623, and abuts against the lower end of the support column 6221, and the other end of the adjustment support 623 abuts against the rod end of the adjustment screw 624;
by rotating the adjusting screw 624, the ball 6231 of the adjusting bracket 623 abuts against the lower end of the supporting column 6221, so that the height of the second supporting plate 622 can be adjusted, and the lower clamping plate 30 can be effectively supported.
The adjusting die table 82 can adjust the vertical direction of the connecting plate 80 to ensure that the lower clamping plate 30 and the upper clamping plate 20 reciprocate horizontally, and the lower clamping plate 30 and the upper clamping plate 20 are prevented from deflecting.
The above-described cartridge 10 and the support mechanism 60 are separately provided on a support table 100, and the support table 100 is capable of vertically adjusting the support mechanism 60 for vertical position adjustment of the support mechanism 60.
The following introduces a testing method for the mechanical property of the shear motion of the particulate matter, wherein the testing method adopts the platform for testing the mechanical property of the linear reciprocating shear motion of the particulate matter, and comprises the following steps:
the first step is as follows: placing two pressure sensors 40 on the upper plate surface of the lower clamp plate 30, covering the upper clamp plate 20 above the two pressure sensors 40, extending an assembly formed by the upper clamp plate 20, the lower clamp plate 30 and the two pressure sensors 40 out of the through holes 11 provided in the box walls on both sides of the cartridge 10, and causing the lower clamp plate 30 to be disposed on the support balls 61 of the support mechanism 60 such that the lower clamp plate 30 is in contact with the support balls 61;
the second step is that: adjusting the vertical adjusting die table 62 to enable the plate surfaces of the upper clamping plate 20 and the lower clamping plate 30 to be in a horizontal state, and simultaneously ensuring that an assembly formed by the upper clamping plate 20, the lower clamping plate 30 and the two pressure sensors 40 keeps a gap arrangement with each part of the charging box 10;
the third step: feeding the particulate matter into the cartridge 10 and causing the particulate matter to pass over the upper plate surface of the upper clamping plate 20;
the fourth step: adjusting the vertical adjustment module 62 such that the upper clamp plate 20 is in contact with the support balls 61 of the support mechanism 60;
the fifth step: adjusting the adjusting die table 82 to enable the connecting plate 80 to be in horizontal contact with the upper end of the tangential force sensor 50, fixing the connecting plate 80 to the upper end of the tangential force sensor 50 through bolts, and fixing the tangential force sensor 50 to the adjusting die table 82;
and a sixth step: applying a weight to the cartridge opening position of the cartridge 10, and activating the driving mechanism so that the assembly formed by the upper clamp plate 20, the lower clamp plate 30, and the two pressure sensors 40 is reciprocated horizontally;
the seventh step: the data collected by the pressure sensor 40, the normal force sensor 70, the tangential force sensor 50 and the displacement sensor 84 are connected with a computer through a collection card, and the computer is used for obtaining the mechanical property data of the shearing movement of the particulate matter.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The utility model provides a mechanical properties test platform of linear reciprocating shear motion of particulate matter which characterized in that:
a cartridge (10) for loading a particulate material to be tested;
an upper clamp plate (20) which is arranged in the charging mechanism (10) and reciprocates along the horizontal direction;
the lower clamping plate (30) is arranged below the upper clamping plate (20) and is used for supporting the upper clamping plate (20) and synchronously reciprocating with the upper clamping plate (20);
the lower clamping plate (30) and the upper clamping plate (20) are arranged in a clearance mode and are connected through a pressure sensor (40), and the pressure sensor (40) is used for collecting the pressure of the upper clamping plate (20) and the lower clamping plate (30) in the vertical direction;
the driving mechanism is used for driving the upper clamping plate (20) and the lower clamping plate (30) to reciprocate in the horizontal direction;
a tangential force sensor (50) for collecting the sliding friction force of the upper clamping plate (20) and the lower clamping plate (30) in the horizontal direction is arranged on the driving mechanism;
the plate surfaces of the upper clamping plate (20) and the lower clamping plate (30) are horizontally arranged at intervals in parallel, the lower plate surfaces at two ends of the lower clamping plate (30) are provided with supporting mechanisms (60), and normal force sensors (70) are arranged below the supporting mechanisms (60);
the loading box (10) is rectangular, through holes (11) are formed in the box walls on two sides of the loading box (10), the upper clamping plate (20) and the lower clamping plate (30) extend out of the through holes (11) and are arranged in a gap mode with the upper hole wall and the lower hole wall of the through holes (11), and the supporting mechanism (60) is arranged on the outer side of the box walls on two sides of the loading box (10).
2. The platform for testing mechanical properties of linear reciprocating shear motion of particulate matter according to claim 1, wherein: the working area of pressure sensor (40) is disk column structure, pressure sensor (40) are vertical arrange and about the end respectively with punch holder (20) and punch holder (30) about the face support by, pressure sensor (40) are provided with two along the length direction interval of punch holder (20) and punch holder (30).
3. The platform for testing mechanical properties of linear reciprocating shear motion of particulate matter according to claim 2, wherein: and a rubber gasket is arranged at the abutting end of the pressure sensor (40) and the upper clamping plate (20).
4. The platform for testing mechanical properties of linear reciprocating shear motion of particulate matter according to claim 1, wherein: the supporting mechanism (60) comprises supporting balls (61) arranged on box walls on two sides of the charging box (10), the supporting balls (61) are fixed at the upper end of a normal force sensor (70), and the normal force sensor (70) is fixed at the upper end of a vertical adjusting die table (62).
5. The platform for testing mechanical properties of linear reciprocating shear motion of particulate matter according to claim 2, wherein: one end of the lower clamping plate (30) and one end of the upper clamping plate (20) are respectively provided with a first through hole and a second through hole (31 and 21), the hole cores of the first through hole and the second through hole (31 and 21) are arranged vertically and coaxially, the driving mechanism comprises a connecting plate (80), a floating pin (81) is arranged at the plate end of the connecting plate (80), the floating pin (81) is vertically arranged in the first through hole and the second through hole (31 and 21) in a penetrating mode, and the aperture of the first through hole and the aperture of the second through hole (31 and 21) are larger than the rod diameter of the floating pin (81).
6. The platform for testing mechanical properties of linear reciprocating shear motion of particulate matter according to claim 5, wherein: actuating mechanism is including setting up on adjustment mould platform (82) on workstation (90), tangential force sensor (50) are fixed on adjustment mould platform (82), the one end of connecting plate (80) is fixed on tangential force sensor (50), be provided with servo motor (83) on workstation (90), the output shaft of servo motor (83) is provided with lead screw (831), the nut cooperation of lead screw (831) and adjustment mould platform (82), the length direction level of lead screw (831) just is parallel with connecting plate (80), still be provided with displacement sensor (84) on workstation (90), displacement sensor (84) are shaft-like and are parallel with lead screw (831), the directional adjustment mould platform (82) of rod end of displacement sensor (84).
7. The method for testing the mechanical property of the shearing motion of the particulate matter is characterized by comprising the following steps: the testing method adopts the testing platform for the mechanical property of the linear reciprocating shear motion of the granular substances as claimed in any one of claims 1 to 6, and comprises the following steps:
the first step is as follows: placing two pressure sensors (40) on the upper plate surface of a lower clamping plate (30), covering the upper clamping plate (20) above the two pressure sensors (40), extending an assembly formed by the upper clamping plate (20), the lower clamping plate (30) and the two pressure sensors (40) out of through holes (11) arranged on the box walls on two sides of a charging box (10), and enabling the lower clamping plate (30) to be arranged on supporting balls (61) of a supporting mechanism (60), so that the lower clamping plate (30) is in contact with the supporting balls (61);
the second step is that: adjusting a vertical adjusting die table (62) to enable the plate surfaces of the upper clamping plate (20) and the lower clamping plate (30) to be in a horizontal state, and simultaneously ensuring that an assembly formed by the upper clamping plate (20), the lower clamping plate (30) and the two pressure sensors (40) keeps gap arrangement with all parts of the charging box (10);
the third step: feeding the particulate matter into the cartridge (10) and causing the particulate matter to pass over the upper plate surface of the upper clamping plate (20);
the fourth step: adjusting the vertical adjustment module (62) so that the upper clamp plate (20) is in contact with a support ball (61) of the support mechanism (60);
the fifth step: adjusting the adjusting die table (82) to enable the connecting plate (80) to be in horizontal contact with the upper end of the tangential force sensor (50), fixing the connecting plate (80) at the upper end of the tangential force sensor (50) by using a bolt, and fixing the tangential force sensor (50) on the adjusting die table (82);
and a sixth step: applying a weight to the position of the cartridge opening of the cartridge (10), and activating the driving mechanism to make the assembly formed by the upper clamping plate (20), the lower clamping plate (30) and the two pressure sensors (40) move back and forth in the horizontal direction;
the seventh step: the data collected by the pressure sensor (40), the normal force sensor (70), the tangential force sensor (50) and the displacement sensor (84) are connected with a computer through a collection card, and the computer is used for obtaining the mechanical property data of the shearing movement of the particulate matter.
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| CN201810390837.XA CN108535179B (en) | 2018-04-27 | 2018-04-27 | Mechanical property testing platform for linear reciprocating shearing motion of particulate matter |
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| CN201810390837.XA CN108535179B (en) | 2018-04-27 | 2018-04-27 | Mechanical property testing platform for linear reciprocating shearing motion of particulate matter |
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| CN108535179A CN108535179A (en) | 2018-09-14 |
| CN108535179B true CN108535179B (en) | 2020-06-12 |
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| CN109799134B (en) * | 2019-03-18 | 2021-10-15 | 合肥工业大学 | Ultra-high precision friction and wear testing machine capable of carrying out in-situ observation on friction surface |
| CN110186816B (en) * | 2019-05-16 | 2024-02-27 | 中国地质大学（武汉） | Test device for testing microscopic dynamics characteristics of granular materials |
| CN111089783B (en) * | 2020-01-16 | 2021-03-30 | 中国科学院武汉岩土力学研究所 | Shearing box connecting device |
| CN114397197A (en) * | 2021-12-23 | 2022-04-26 | 东南大学 | Rock-soil micro-mechanical property tester |
| CN114812454B (en) * | 2022-05-31 | 2024-02-09 | 佛山市顺德区乐普达电机有限公司 | Motor casing end cover straightness depth of parallelism detector that hangs down |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006010414A (en) * | 2004-06-23 | 2006-01-12 | Kao Corp | Evaluation method of powder |
| CN101498651A (en) * | 2009-02-25 | 2009-08-05 | 西安交通大学 | Tester for single-particle intrusion into relative interface |
| CN102226751A (en) * | 2011-04-02 | 2011-10-26 | 合肥工业大学 | Friction tester for dense granules |
| CN102636428A (en) * | 2012-03-26 | 2012-08-15 | 北京农业智能装备技术研究中心 | Device and method for automatically testing granular fertilizer friction coefficient |
| CN204086058U (en) * | 2014-10-17 | 2015-01-07 | 湖南农业大学 | A kind of threshing element friction wear testing machine |
| CN104614292A (en) * | 2015-01-15 | 2015-05-13 | 河海大学 | Plane Couette shear test device |
-
2018
- 2018-04-27 CN CN201810390837.XA patent/CN108535179B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006010414A (en) * | 2004-06-23 | 2006-01-12 | Kao Corp | Evaluation method of powder |
| CN101498651A (en) * | 2009-02-25 | 2009-08-05 | 西安交通大学 | Tester for single-particle intrusion into relative interface |
| CN102226751A (en) * | 2011-04-02 | 2011-10-26 | 合肥工业大学 | Friction tester for dense granules |
| CN102636428A (en) * | 2012-03-26 | 2012-08-15 | 北京农业智能装备技术研究中心 | Device and method for automatically testing granular fertilizer friction coefficient |
| CN204086058U (en) * | 2014-10-17 | 2015-01-07 | 湖南农业大学 | A kind of threshing element friction wear testing machine |
| CN104614292A (en) * | 2015-01-15 | 2015-05-13 | 河海大学 | Plane Couette shear test device |
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