A piezoelectric ceramic stiffness measurement device

Abstract

The present invention relates to the technical field of stiffness measuring devices, and more specifically discloses a piezoelectric ceramic stiffness measuring device, comprising a box shell, a box cover is provided on the top of the box shell, a box body bottom plate is fixedly connected to the bottom of the box shell, a box opening is provided on the side wall of the box shell, a protruding block is provided at the box opening, a hinged lifting mechanism is provided at the bottom of the box shell, a supporting mechanism is provided on the top of the hinged lifting mechanism, pressure plates are provided on both sides of the supporting mechanism, and a light reflection system is movably connected to the inner side of the pressure plate. The present invention is provided with a light reflection device, and the light is irradiated onto a rotating mirror and reflected onto a scale, thereby utilizing the sensitivity of light reflection, and converting the deformation variable of the experimental ceramic with a small variable into a huge variable of movement after the light is reflected, which is conducive to realizing the magnified observation of the ceramic deformation, reducing the experimental error, and improving the accuracy of the experiment.

Description

Technical Field

[0001] The present invention relates to the technical field of stiffness measuring devices, and more specifically to a piezoelectric ceramic stiffness measuring device. Background Art

[0002] Piezoelectric ceramics are an information functional ceramic material that can convert mechanical energy and electrical energy into each other. It has multiple properties such as piezoelectricity, dielectricity and elasticity, which makes it widely applicable in various application fields. It is widely used in various fields, and the requirements for various performances of piezoelectric ceramics in production are also very prominent. Among them, stiffness is an important performance indicator, so the measurement method of the stiffness of piezoelectric ceramics is very important.

[0003] The general measurement method of the stiffness of piezoelectric ceramics is to measure the stiffness of piezoelectric ceramics through the piezoelectric effect and the principle of stress-strain relationship. The piezoelectric ceramic sample is first fixed on the measuring equipment and ensured to be evenly stressed. Electrodes are installed at both ends of the sample to apply voltage and measure charge changes. A voltage source is used to apply a constant voltage to the piezoelectric ceramic sample and monitor the displacement changes caused by it. Alternatively, a force gauge is used to apply a constant external force to the sample and monitor the charge changes caused by it. The displacement or charge change data of the piezoelectric ceramic sample under different voltages or external forces are recorded, and a voltage-displacement curve or an external force-charge curve is drawn according to the recorded data. The stiffness of the piezoelectric ceramic is calculated by analyzing the curve.

[0004] The current general measurement method for the stiffness of piezoelectric ceramics is relatively sensitive in the measurement process. Sensitive factors such as temperature, humidity, vibration, etc., changes in these conditions may affect the accuracy of the measurement results, and require special equipment for applying voltage and detecting charge changes. The requirements for external experimental conditions are also very high, and the test results are not entirely accurate. In addition, during the experiment, the pressure applied to the piezoelectric ceramics may be too high, causing the piezoelectric ceramics to break. In this case, after the piezoelectric ceramics are broken, the experimenter generally uses manual cleaning, and machine cleaning cannot be achieved. In addition, the length of cleaning time varies from person to person, affecting the subsequent experimental progress. Summary of the invention

[0005] In order to overcome the above defects of the prior art, the present invention provides a piezoelectric ceramic stiffness measurement device to solve the problems existing in the above background technology.

[0006] The present invention provides the following technical solutions: a piezoelectric ceramic stiffness measuring device, comprising a box shell, a box cover is provided on the top of the box shell, a hinged lifting mechanism is provided on the bottom of the box shell, a cylinder is provided on the bottom of the box shell, an elastic mechanism is provided on the bottom of the box shell, a support mechanism is provided on the top of the hinged lifting mechanism, pressure plates are provided on both sides of the support mechanism, a reflection system is movably connected to the inner side of the pressure plate, a force column is fixedly connected to the outer wall of the pressure plate, a cleaning mechanism is provided on the top of the pressure plate, and a feeding mechanism is provided on the front side of the hinged lifting mechanism;

[0007] Furthermore, the articulated lifting mechanism includes an articulated block, the bottom end of the articulated block is fixedly connected to the bottom of the box shell, the articulated block is hinged to one end of a hinged rod, a support track is provided under the support mechanism, the other end of the articulated rod is slidably connected to the straight groove of the support track, another articulated rod is hinged to the middle part of the articulated rod, the upper end of the articulated rod is hinged to the articulated block, the other end of the articulated rod is hinged to a roller, and the roller is rollingly connected to the bottom of the box shell.

[0008] Furthermore, the supporting mechanism includes a support plate, which is fixedly connected to the top of the articulated lifting mechanism, a material drop ladder is hinged on the side of the support plate close to the feeding mechanism, a stop block is fixedly connected to this side of the support plate, and the stop block is located above the ladder surface of the material drop ladder, a Y-shaped support column is provided above the side of the support plate close to the feeding mechanism, an elastic mechanism is provided below the material drop ladder, an L-shaped block is fixedly connected to the corner side of the support plate where the material drop ladder is located, the cross bar of the L-shaped block extends from the open slot, and the vertical bar of the L-shaped block is fixedly connected to a rack.

[0009] Furthermore, the feeding mechanism includes a gear, which is meshed with a rack, the gear key is connected to a screw, the screw and worm gear are connected to a material receiving box, the opening of the material receiving box is opposite to the opening of the material dropping ladder, a guide rail is provided under the material receiving box, and pillars are provided at both ends of the screw.

[0010] Furthermore, the pressure plate includes a pressure plate body, a plate surface of which is provided with an open groove, the pressure plate body is fixedly connected to the box shell via a connecting rod, and an L-shaped baffle is fixedly connected to the inner side of the pressure plate body.

[0011] Furthermore, the cleaning mechanism includes an articulated oblique block, a pressure plate body is provided below the cleaning mechanism, the articulated oblique block is in a triangular inclined shape, the high side bottom angle of the articulated oblique block is hinged to a corner of the pressure plate body on the side away from the feeding mechanism, a rotating track is fixedly connected to the top of the articulated oblique block, a support rod is fixedly connected to the low side of the articulated oblique block close to the feeding mechanism, the support rod is fixedly connected to the articulated oblique blocks on both sides, the support rod is located directly above the Y-shaped support column, and a rolling brush is rollingly connected to the internal straight groove of the rotating track.

[0012] Furthermore, the elastic mechanism includes a sleeve, which is barrel-shaped, and a pressure rod is sleeved inside the sleeve. The pressure rod includes a vertical rod located outside the sleeve and a protrusion located inside the sleeve, and the size of the protrusion is larger than the opening size of the sleeve. A spring is sleeved inside the sleeve, and the protrusion of the pressure rod is above the spring.

[0013] Furthermore, the rolling brush includes a mounting groove, and bristles are installed inside the mounting groove.

[0014] Furthermore, the light reflection system includes a fixed plate, which is rollingly connected to the rotating mirror through a bearing, and a T-shaped suspension frame is fixedly connected below the rotating mirror, and the two ends of the T-shaped suspension frame are equal in length, and the two ends of the T-shaped suspension frame are fixedly connected to suspension balls.

[0015] Technical effects and advantages of the present invention:

[0016] 1. The present invention is provided with a light reflecting device, which irradiates light onto a rotating mirror and reflects it onto a scale, thereby utilizing the sensitivity of light reflection and converting the deformation variable of the experimental ceramic with a tiny variable into a huge variable of movement after the light is reflected. This is conducive to realizing the magnified observation of the ceramic deformation, reducing the experimental error and improving the accuracy of the experiment.

[0017] 2. The present invention is provided with a flippable articulated bevel block, which is in a triangular or trapezoidal shape with one side higher than the other. When the support plate rises, the articulated bevel block is driven to rotate, thereby driving the rolling brush connected to it to rotate, thereby cleaning the support plate, realizing two actions with one power source, and effectively saving an extra power source. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a top view of the overall structure of the present invention.

[0020] Figure 3 It is a cross-sectional view of the overall structure of the present invention.

[0021] Figure 4 It is a schematic diagram of the structure of the present invention without the box shell.

[0022] Figure 5 It is a structural schematic diagram of another angle of the present invention without the box shell.

[0023] Figure 6 It is a schematic structural diagram of the cleaning mechanism of the present invention when it is raised.

[0024] Figure 7It is a schematic diagram of the enlarged structure of point a of the present invention.

[0025] Figure 8 It is a schematic diagram of the enlarged structure of point b of the present invention.

[0026] Fig. 9 It is a cross-sectional view of the light reflection system of the present invention.

[0027] The accompanying drawings are marked as follows: 1. box shell; 101. box opening; 102. extension block; 103. box bottom plate; 2. box cover; 3. force column; 4. feeding mechanism; 401. pillar; 402. screw; 403. guide rail; 404. material receiving box; 405. gear; 5. pressure sensor; 6. light reflection system; 601. fixing plate; 602. rotating mirror; 603. T-type suspension bracket; 604. suspension ball; 605. bearing; 7. experimental ceramics; 8. cleaning mechanism; 801. rotating track; 802. rolling brush; 8021. mounting groove; 8022. Brush; 803, support rod; 804, articulated bevel block; 9, supporting mechanism; 901, blanking ladder; 902, L-shaped block; 903, rack; 904, stop block; 905, Y-shaped support column; 906, supporting track; 907, support plate; 10, elastic mechanism; 1001, spring; 1002, pressure rod; 1003, sleeve; 11, cylinder; 12, articulated lifting mechanism; 1201, articulated block; 1202, articulated rod; 1203, roller; 13, pressure plate; 1301, connecting rod; 1302, opening groove; 1303, L-shaped baffle; 1304, pressure plate body. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The piezoelectric ceramic stiffness measuring device involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0029] Reference Figure 1-3The present invention provides a piezoelectric ceramic stiffness measuring device, comprising a box cover 2 provided on the top of a box shell 1, a box opening 101 provided on the side wall of the box shell 1, a protruding block 102 provided at the box opening 101, a hinged lifting mechanism 12 provided at the bottom of the box shell 1, a cylinder 11 provided at the bottom of the box shell 1, an elastic mechanism 10 provided at the bottom of the box shell 1, a support mechanism 9 provided at the top of the hinged lifting mechanism 12, pressure plates 13 provided on both sides of the support mechanism 9, a light reflection system 6 movably connected to the inner side of the pressure plate 13, a force column 3 fixedly connected to the outer wall of the pressure plate 13, a cleaning mechanism 8 provided on the top of the pressure plate 13, a feeding mechanism 4 provided on the front side of the hinged lifting mechanism 12, and a pressure sensor 5 provided on the inner wall of the box shell 1 facing the pressure plate 13;

[0030] In this embodiment, it should be specifically explained that: the air cylinder 11 is connected to an external air pump, and the air intake pump continuously delivers the gas to the inside.

[0031] The main difference between this embodiment and the prior art is that this embodiment adopts, specifically, the sensitivity of light reflection is used to amplify the deformation of the piezoelectric ceramic during the pressure application process, so as to measure the deformation of the piezoelectric ceramic during the force application process, and the possible broken piezoelectric ceramic fragments are cleaned by the rolling brush 802 under the action of gravity during the flipping process of the cleaning mechanism 8, specifically, the light reflection system 6 and the cleaning mechanism 8;

[0032] The above structure is the main structure of this embodiment, which solves the problem of manual cleaning after the piezoelectric ceramics are broken and solves the problem of inaccurate measurement. The cylinder 11 is an existing structure, and the specific connection method of the cylinder 11 is not described in detail in this embodiment.

[0033] Reference Figure 4 The articulated lifting mechanism 12 includes an articulated block 1201, the bottom end of which is fixedly connected to the bottom of the box shell 1, the articulated block 1201 is hinged to one end of an articulated rod 1202, the other end of the articulated rod 1202 is slidably connected to the straight groove of the support rail 906, and another articulated rod 1202 is hinged to the middle part of the articulated rod 1202, the upper end of the articulated rod 1202 is articulated to the articulated block 1201 fixed on the support plate 907, and the other end is articulated to a roller 1203, and the roller 1203 is rollingly connected to the top surface of the bottom plate 103 of the box body.

[0034] In this embodiment, it is necessary to specifically explain that: the cylinder 11 pushes the support plate 907 to rise, and the support plate 907 drives the upper end of the hinged rod 1202 to rise. Since the left end of the hinged rod 1202 is fixedly connected, the roller 1203 slidingly connected to the bottom plate 103 of the box body slides toward the fixedly connected hinge block 1201, and the other end of the hinged rod 1202 slidingly connected to the straight groove of the support rail 906 also slides toward the fixedly connected hinge block 1201.

[0035] Reference Figure 5 The upper part of the articulated lifting mechanism 12 is fixedly connected to the support mechanism 9, and the support mechanism 9 includes a support plate 907. A material drop ladder 901 is hingedly connected to the side of the support plate 907 close to the feeding mechanism 4. A stopper 904 is fixedly connected to the side of the support plate 907. The stopper 904 is located above the ladder surface of the material drop ladder 901. A Y-shaped support column 905 is provided above the side of the support plate 907 close to the feeding mechanism 4. An elastic mechanism 10 is provided below the material drop ladder 901. When the material drop ladder 901 rotates to a horizontal position, it will be blocked by the stopper 904 to prevent the material drop ladder 901 from continuing to rise. The support plate 907 where the material drop ladder 901 is located An L-shaped block 902 is fixedly connected to the corner side of the device, and the horizontal bar of the L-shaped block 902 extends out from the opening groove 1302. The vertical bar of the L-shaped block 902 is fixedly connected to the rack 903. The rack 903 is meshingly connected to the gear 405. The gear 405 is key-connected with the screw 402. The screw 402 is worm-driven and connected to the material receiving box 404. The opening of the material receiving box 404 is opposite to the opening of the blanking ladder 901. A guide rail 403 is provided at the bottom of the material receiving box 404. Pillars 401 are provided at both ends of the screw 402. The screw 402 extends out from the box opening 101, and the pillar 401 at the other end is arranged on the upper top surface of the extending block 102.

[0036] In this embodiment, it is necessary to specifically explain that: when the support plate 907 descends and reaches a certain point, the support plate 907 will first touch the elastic mechanism 10, and under the elastic force of the elastic mechanism 10, it will become horizontal, and collide with the stop block 904 to produce vibration, so that the collected waste falls into the receiving box 404, and the support plate 907 continues to move downward, driving the rack 903 to move downward, and the rack 903 begins to mesh with the gear 405, and the gear 405 rotates to drive the screw 402 to rotate. Since the screw 402 is connected to the turbine of the receiving box 404, the receiving box 404 moves outward to discharge the waste.

[0037] Reference Figure 6 The pressure plate 13 includes a pressure plate body 1304, the plate surface of the pressure plate body 1304 is provided with an open groove 1302, the pressure plate body 1304 is fixedly connected to the box shell 1 through a connecting rod 1301, an L-shaped baffle 1303 is fixedly connected to the inner side of the pressure plate body 1304, and a cleaning mechanism 8 is provided above the pressure plate body 1304, the cleaning mechanism 8 includes a hinged oblique block 804, the hinged oblique block 804 is triangularly inclined, the high side bottom angle of the hinged oblique block 804 is hinged to a corner of the pressure plate body 1304 on the side away from the feeding mechanism 4, a rotating track 801 is fixedly connected to the top of the hinged oblique block 804, and a support rod 803 is fixedly connected to the low side of the hinged oblique block 804 close to the feeding mechanism 4, and the support rod 803 is fixedly connected to the hinged oblique blocks 804 on both sides, and the support rod 803 is located directly above the Y-shaped support column 905, and a rolling brush 802 is rollingly connected to the inner straight groove of the rotating track 801.

[0038] In this embodiment, it is necessary to specifically explain that: the cylinder 11 pushes the support plate 907 to move upward, and the Y-shaped support column 905 fixed on the support plate 907 also moves upward. When reaching a certain point, the concave point of the Y-shaped support column 905 contacts the support rod 803, driving the support rod 803 to lift upward, and the rotating track 801 and the hinged inclined block 804 fixedly connected thereto are also lifted upward. Because the hinged inclined block 804 is hinged to a corner of the pressure plate 13, the hinged inclined block 804 performs a flipping motion, and the rotating track 801 and the support rod 803 also perform a flipping motion. At this time, the movement trajectory of the support rod 803 is an arc, but until the support rod 803 moves to the highest point, the support rod 803 is always located at the Y-shaped support column 90 5, at the beginning, the rolling brush 802 under the action of gravity is located at the bottom of the rotating track 801, and as the rotating track 801 makes a flipping motion, one end at the bottom is lifted, and the rolling brush 802 rollingly connected to the rotating track 801 begins to roll to the other end, sweeping the broken experimental ceramic 7 fragments to the drop ladder 901, and when the rolling brush 802 rolls to the other end, the cleaning action is completed. At this time, the support plate 907 reaches the upper limit position, and the cylinder 11 pulls the support plate 907 downward, and the Y-shaped support column 905 also moves downward. The rotating track 801 and the articulated inclined block 804 make a return flipping motion under the action of gravity, and the rolling brush 802 also returns to the other end under the action of gravity.

[0039] Reference Figure 7 The elastic mechanism 10 includes a sleeve 1003, which is barrel-shaped. A pressure rod 1002 is sleeved inside the sleeve 1003. The pressure rod 1002 includes a vertical rod located outside the sleeve 1003 and a protrusion located inside the sleeve 1003. The size of the protrusion is larger than the opening size of the sleeve 1003 to prevent the pressure rod 1002 from leaking out of the sleeve 1003. A spring 1001 is sleeved inside the sleeve 1003, and the protrusion of the pressure rod 1002 is above the spring 1001.

[0040] In this embodiment, it should be specifically explained that: when the blanking ladder 901 squeezes the pressure rod 1002 from the outside, the protrusion of the pressure rod 1002 compresses the spring 1001 to deform. When the deformation force of the spring 1001 is greater than the sum of the masses of the protruding block 102 and the blanking ladder 901, the blanking ladder 901 is lifted upward.

[0041] Reference Figure 8 The rolling brush 802 includes a mounting groove 8021, and bristles 8022 are installed inside the mounting groove 8021.

[0042] In this embodiment, it should be specifically explained that: when the rolling brush 802 rotates, the bristles 8022 are driven to rotate, and the bristles 8022 fixedly connected to the rolling brush 802 have begun to contact the support plate 907, and the bristles 8022 begin to clean the experimental ceramics 7 on the support plate 907.

[0043] Reference Fig. 9 The light reflection system 6 includes a fixed plate 601, which is rollingly connected to a rotating mirror 602 through a bearing 605. A T-shaped suspension frame 603 is fixedly connected below the rotating mirror 602. Both ends of the T-shaped suspension frame 603 are of equal length. Both ends of the T-shaped suspension frame 603 are fixedly connected to suspension balls 604.

[0044] In this embodiment, it is necessary to specifically explain that: the hanging ball 604 at one end of the suspended light reflecting system 6 is placed on the L-shaped baffle 1303 and abuts against the inner wall of the corresponding side of the pressure plate 13, and the hanging ball 604 at the other end of the light reflecting system 6 is kept suspended in the air. After the light reflecting system 6 naturally comes to a stop, a thin light beam is irradiated on the mirror surface of the rotating mirror 602 of the light reflecting system 6 so that its reflected light can be reflected on a pre-prepared scale.

[0045] Working principle of the present invention:

[0046] The main problem solved by this embodiment is: using the sensitivity of light reflection to amplify the deformation of the piezoelectric ceramic during the pressure application process, to measure the deformation of the piezoelectric ceramic during the force application process, and to use the flipping of the rolling brush 802 under the action of gravity during the flipping of the cleaning mechanism 8 to clean the piezoelectric ceramic fragments that may be broken, thereby solving the problem of manual cleaning of piezoelectric ceramics after they are broken.

[0047] The specific steps are as follows:

[0048] First, open the box cover 2, place the experimental ceramic 7 between the two pressure plates 13 and on the support plate 907, start the cylinder 11, push the support plate 907, ensure that the force column 3 is facing the experimental ceramic 7 across the pressure plate 13, and the rack 903 is located obliquely above the gear 405 without contact, the drop mouth of the drop ladder 901 is facing the screw 402, and the force columns 3 on both sides begin to press and pre-tighten the two pressure plates 13, clamp the experimental ceramic 7 through the transfer of force, and place the hanging ball 604 of the suspended light reflection system 6 on the L-shaped baffle 1303 and press against it. Leaning against the inner wall on the corresponding side of the pressure plate 13, the hanging ball 604 at the other end of the light reflection system 6 remains suspended. After the light reflection system 6 is naturally still, a thin light beam is irradiated on the mirror surface of the rotating mirror 602 of the light reflection system 6 to reflect the light onto the pre-prepared scale. As the mirror surface of the rotating mirror 602 deflects, the scale on the scale can also change. The distance between the scale and the light reflection system 6 ensures that even if the mirror surface of the rotating mirror 602 is slightly deflected, the scale irradiated to the scale can move significantly, and the initial value of the scale is recorded.

[0049] Apply pressure to the force-applying column 3, and gradually increase the external force from zero, and the pressure value gradually increases until it reaches the predetermined maximum force value. Record the scale change of the scale under the condition of increasing pressure. Note that the scale change value of the scale must be recorded after the light reflection system 6 is stable, otherwise it will be invalid. By drawing a relationship curve between the input force and the displacement, the stiffness value of the experimental ceramic 7 is determined.

[0050] Assuming that the experimental ceramic 7 is broken during the pressure application process, the experiment is stopped immediately, and the large piece of unbroken experimental ceramic 7 is taken out. The cylinder 11 pushes the support plate 907 to move upward, and the Y-shaped support column 905 fixed on the support plate 907 also moves upward. When it reaches a certain point, the concave point of the Y-shaped support column 905 contacts the support rod 803, driving the support rod 803 to lift upward, and the rotating track 801 and the articulated bevel block 804 fixedly connected thereto are also lifted upward. Because the articulated bevel block 804 is hinged to a corner of the pressure plate 13, the articulated bevel block 804 flips over, and the rotating track 801 and the support rod 803 also flip over. At this time, the movement trajectory of the support rod 803 is an arc, but it will not move until the support rod 803 moves to the highest At this point, the support rod 803 is always located in the depression of the Y-shaped support column 905. At the beginning, the rolling brush 802 under the action of gravity is located at the bottom of the rotating track 801. As the rotating track 801 flips, one end at the bottom is lifted, and the rolling brush 802 rollingly connected to the rotating track 801 begins to roll toward the other end. At this time, the bristles 8022 fixedly connected to the rolling brush 802 have begun to contact the support plate 907. As the rolling brush 802 begins to roll toward the other end, the bristles 8022 form a cleaning action on the support plate 907, sweeping the broken experimental ceramic 7 fragments toward the drop ladder 901. When the rolling brush 802 rolls to the other end, the cleaning action is completed, and the support plate 907 reaches the upper limit position.

[0051] The cylinder 11 pulls the support plate 907 to move downward, and the Y-shaped support column 905 also moves downward. The rotating track 801 and the hinged inclined block 804 perform a return flipping motion under the action of gravity, and the rolling brush 802 also returns to the other end under the action of gravity. When the support plate 907 drops to a certain point, the bottom surface of the blanking ladder 901 contacts the top of the pressure rod 1002, and the protrusion of the pressure rod 1002 squeezes the spring 1001, and the elastic force of the spring 1001 is greater than the gravity of the blanking ladder 901. Since the blanking ladder 901 is hinged with the support plate 907, the support plate 907 is lifted upward and collides with the stopper 904, generating a shock force, causing the fragments of the experimental ceramic 7 in the support plate 907 to slide down into the material receiving box 404, completing the waste collection action;

[0052] The support plate 907 continues to move downward, driving the rack 903 to move downward, and the rack 903 begins to mesh with the gear 405. The gear 405 rotates and drives the screw 402 to rotate. Since the screw 402 is connected to the turbine of the material receiving box 404, the material receiving box 404 moves outward to discharge the waste.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A piezoelectric ceramic stiffness measuring device, comprising a box housing (1), characterized in that: The top of the box shell (1) is provided with a box cover (2), the bottom of the box shell (1) is provided with a box body bottom plate (103) fixedly connected thereto, the side wall of the box shell (1) is provided with a box opening (101), a protruding block (102) is provided at the box opening (101), the bottom of the box shell (1) is provided with a hinged lifting mechanism (12), the bottom of the box shell (1) is provided with a cylinder (11), the bottom of the box shell (1) is provided with an elastic mechanism (10), and the top of the hinged lifting mechanism (12) is provided with a supporting mechanism (9) , pressure plates (13) are provided on both sides of the support mechanism (9), the inner side of the pressure plate (13) is movably connected to a light reflection system (6), the outer wall of the pressure plate (13) is fixedly connected to a force column (3), the top of the pressure plate (13) is provided with a cleaning mechanism (8), the front side of the hinged lifting mechanism (12) is provided with a feeding mechanism (4), a pressure sensor (5) is provided on the inner wall of the box shell (1), the pressure sensor (5) is directly opposite to the pressure plate (13), and experimental ceramics (7) are placed between the pressure plates (13); The hinged lifting mechanism (12) comprises a hinge block (1201), the bottom end of the hinge block (1201) is fixedly connected to the bottom of the box shell (1), the hinge block (1201) is hinged to one end of a hinge rod (1202), a support track (906) is provided below the support mechanism (9), the other end of the hinge rod (1202) is slidably connected to a straight groove of the support track (906), another hinge rod (1202) is hinged to the middle of the hinge rod (1202), the upper end of the hinge rod (1202) is hinged to the hinge block (1201), and the other end of the hinge rod (1202) is hinged to a roller (1203), and the roller (1203) is rollingly connected to the top surface of the box body bottom plate (103); The support mechanism (9) comprises a support plate (907), the support plate (907) is fixedly connected to the top of the hinged lifting mechanism (12), a material drop ladder (901) is hingedly connected to the side of the support plate (907) close to the feeding mechanism (4), a stopper (904) is fixedly connected to the side of the support plate (907), the stopper (904) is located above the ladder surface of the material drop ladder (901), a Y-shaped support column (905) is provided above the side of the support plate (907) close to the feeding mechanism (4), an elastic mechanism (10) is provided below the material drop ladder (901), an L-shaped block (902) is fixedly connected to the corner side of the support plate (907) where the material drop ladder (901) is located, a crossbar of the L-shaped block (902) extends out of the opening slot (1302), and a vertical bar of the L-shaped block (902) is fixedly connected to a rack (903); The elastic mechanism (10) comprises a sleeve (1003), the sleeve (1003) is barrel-shaped, a pressure rod (1002) is sleeved inside the sleeve (1003), the pressure rod (1002) comprises a vertical rod located outside the sleeve (1003) and a convex block located inside the sleeve (1003), the size of the convex block is larger than the opening size of the sleeve (1003), a spring (1001) is sleeved inside the sleeve (1003), and the convex block of the pressure rod (1002) is above the spring (1001).

2. A piezoelectric ceramic stiffness measuring device according to claim 1, characterized in that: The feeding mechanism (4) comprises a gear (405), the gear (405) is meshingly connected with a rack (903), the gear (405) is key-connected with a screw (402), the screw (402) is worm-drivenly connected with a receiving box (404), the opening of the receiving box (404) is directly opposite to the opening of the material drop ladder (901), a guide rail (403) is provided below the receiving box (404), pillars (401) are provided at both ends of the screw (402), the screw (402) extends from the box opening (101), and the pillar (401) at the other end is provided on the upper top surface of the extending block (102).

3. A piezoelectric ceramic stiffness measuring device according to claim 1, characterized in that: The pressure plate (13) comprises a pressure plate body (1304), the plate surface of the pressure plate body (1304) is provided with an opening groove (1302), the pressure plate body (1304) is fixedly connected to the box shell (1) via a connecting rod (1301), and the inner side of the pressure plate body (1304) is fixedly connected with an L-shaped baffle (1303).

4. The piezoelectric ceramic stiffness measuring device according to claim 1, characterized in that: The cleaning mechanism (8) comprises an articulated inclined block (804), a pressure plate body (1304) is arranged below the cleaning mechanism (8), the articulated inclined block (804) is in a triangular inclined shape, the high side bottom angle of the articulated inclined block (804) is articulated to a corner of the pressure plate body (1304) on the side away from the feeding mechanism (4), a rotating track (801) is fixedly connected to the top of the articulated inclined block (804), a support rod (803) is fixedly connected to the low side of the articulated inclined block (804) close to the feeding mechanism (4), the support rod (803) is fixedly connected to the articulated inclined blocks (804) on both sides, the support rod (803) is located directly above the Y-shaped support column (905), and a rolling brush (802) is rollingly connected to the internal straight groove of the rotating track (801).

5. A piezoelectric ceramic stiffness measuring device according to claim 4, characterized in that: The rolling brush (802) comprises a mounting groove (8021), and bristles (8022) are mounted inside the mounting groove (8021).

6. The piezoelectric ceramic stiffness measuring device according to claim 1, characterized in that: The light reflection system (6) comprises a fixed plate (601), the fixed plate (601) being rollingly connected to a rotating mirror (602) via a bearing (605), a T-shaped suspension frame (603) being fixedly connected below the rotating mirror (602), the two ends of the T-shaped suspension frame (603) being of equal length, and a suspension ball (604) being fixedly connected to the two ends of the T-shaped suspension frame (603).

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