CN115112482A - Pressure testing device for elastic material - Google Patents
Pressure testing device for elastic material Download PDFInfo
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- CN115112482A CN115112482A CN202210912270.4A CN202210912270A CN115112482A CN 115112482 A CN115112482 A CN 115112482A CN 202210912270 A CN202210912270 A CN 202210912270A CN 115112482 A CN115112482 A CN 115112482A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/062—Special adaptations of indicating or recording means with mechanical indicating or recording means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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Abstract
The invention discloses a pressure testing device for an elastic material, which comprises a pressure loading mechanism, an upper pressure sensor, an elastic material fixing support, a lower pressure sensor and a plurality of supporting rods, wherein the pressure loading mechanism is connected with the elastic material fixing support and is used for driving the elastic material fixing support to move up and down; the upper pressure sensor is fixed between the pressure loading mechanism and the elastic material fixing support; the elastic material fixing bracket is used for fixing the elastic material to be tested on the lower surface of the elastic material fixing bracket; the plurality of support rods are fixed below the elastic material fixing support, and the support rods can move in the height direction and the horizontal direction; one or more downward pressure sensors distributed along the length direction of the supporting rods are fixed on the upper surface of each supporting rod, and the downward pressure sensors are used for detecting the bearing pressure of the bearing surfaces of the supporting rods when the pressure loading mechanism presses the elastic material to be tested to the downward pressure sensors. The invention can test the performance of elastic materials in different shapes and materials in different scenes.
Description
Technical Field
The invention relates to the technical field of testing devices, in particular to a pressure testing device for an elastic material.
Background
The existing common elastic material testing method is that a material to be tested is placed on a platform plane, and a servo motor drives a pressure plate to move up and down to test the relevant performances of the elastic material, including compression ratio, permanent deformation and the like, so that the performance of the material can be measured. However, for some stepped products, the pressure distribution of each step is difficult to be simulated when the elastic material is pressed, and meanwhile, the compression life of the elastic material is difficult to be measured quickly, and a related platform needs to be developed specially and additionally to perform related experiments, so that the cost is increased, and the subsequent universality is not strong.
Disclosure of Invention
Aiming at the defects of the prior art, the invention innovatively provides the pressure testing device for the elastic material, which can quickly test the pressure distribution condition of the plane elastic material and the special-shaped surface elastic material, thereby testing the performance of the elastic material under different scenes and having strong universality; the upper pressure sensor is used for reading the output pressure of the pressure loading mechanism, and the lower pressure sensor is used for reading the bearing pressure of the upper bearing surface of the upper pressure sensor, so that the mechanical property of the elastic material is accurately obtained; through setting up a plurality of bracing pieces and a plurality of pressure sensor down, the performance of measurable elastic material different positions department to can be used to the detection of step type product correlation property.
In order to achieve the technical purpose, the invention discloses a pressure testing device for an elastic material, which comprises a pressure loading mechanism, an upper pressure sensor, an elastic material fixing support, a lower pressure sensor and a plurality of supporting rods,
the pressure loading mechanism is connected with the elastic material fixing support and is used for driving the elastic material fixing support to move up and down;
the upper pressure sensor is fixed between the pressure loading mechanism and the elastic material fixing support and used for detecting the output pressure of the pressure loading mechanism;
the elastic material fixing bracket is used for fixing the elastic material to be tested on the lower surface of the elastic material fixing bracket;
the plurality of support rods are fixed below the elastic material fixing support and used for supporting the lower pressure sensor, and the support rods can move in the height direction and the horizontal direction;
one or more downward pressure sensors arranged along the length direction of the supporting rod are fixed on the upper surface of each supporting rod, and the downward pressure sensors are used for detecting the bearing pressure of the bearing surfaces of the downward pressure sensors when the pressure loading mechanism presses the elastic material to be tested downwards.
Furthermore, the pressure loading mechanism and the elastic material fixing support can slide back and forth relative to the supporting rod.
The pressure loading mechanism is fixed on the support plate, a pressurizing part of the pressure loading mechanism moves up and down relative to the support plate, and the support rod is fixedly connected with the rack.
Furthermore, the support plate is connected with the rack in a sliding mode through a sliding assembly, the sliding assembly comprises a sliding rail and a sliding block, one of the sliding rail and the sliding block is fixed to the support plate, the other of the sliding rail and the sliding block is fixed to the rack, and a sliding rail clamp is fixed to the support plate.
The lower end of the guide mechanism is fixedly connected with the elastic material fixing support, and the guide mechanism is connected with the supporting plate in a vertical sliding mode.
Furthermore, the guide mechanism comprises two guide shafts which are parallel to each other, the two guide shafts are distributed on two sides of the pressure loading mechanism, a guide hole for the guide shaft to pass through is formed in the support plate, and the guide shafts slide up and down in the guide hole under the driving of the pressure loading mechanism.
Furthermore, the two end parts of the supporting rod are provided with internal thread holes, the axial direction of the internal thread holes is along the length direction of the supporting rod, the two side surfaces of the rack are provided with a plurality of fastening holes for fastening bolts to pass through along the height direction and the horizontal direction, the fastening bolts are matched with the internal thread holes, and the height and the horizontal position of the supporting rod are adjusted by selecting the fastening holes through which the fastening bolts pass.
Furthermore, the elastic material fixing device further comprises a reset connecting mechanism, and the reset connecting mechanism is used for connecting a pressurizing part of the pressure loading mechanism and the elastic material fixing support to enable the pressure loading mechanism to drive the elastic material fixing support to move upwards.
Further, the reset connecting piece includes spacing post and carriage, the carriage with elastic material fixed bolster fixed connection, spacing post is the step form, the less post tip of spacing post external diameter is connected with pressure loading mechanism, spacing hole has been seted up on the carriage, spacing pot head is established on the less post of spacing post external diameter, the aperture of spacing hole is less than the external diameter of the great post of spacing post external diameter.
Furthermore, foot cups are fixed at four corners of the bottom of the rack.
The invention has the beneficial effects that:
the pressure testing device for the elastic material can quickly test the pressure distribution conditions of the plane elastic material and the special-shaped surface elastic material, so that the performance of the elastic material under different scenes can be tested, and the universality is strong; the upper pressure sensor is used for reading the output pressure of the pressure loading mechanism, and the lower pressure sensor is used for reading the bearing pressure of the upper bearing surface of the upper pressure sensor, so that the mechanical property of the elastic material is accurately obtained; through setting up a plurality of bracing pieces and a plurality of down force transducer, the performance of measurable elastic material different positions department to can be used to the detection of step type product correlation performance.
Drawings
Fig. 1 is a schematic structural view of a pressure testing apparatus for an elastic material according to an embodiment of the present invention.
Fig. 2 is a schematic view of the apparatus for pressure testing an elastic material according to the embodiment of the present invention, except for the front side of the frame.
FIG. 3 is a schematic view of the apparatus for pressure testing an elastic material according to an embodiment of the present invention, with the side plate of the frame removed.
In the figure, the position of the upper end of the main shaft,
1. a frame; 2. a control system; 3. a pressure loading mechanism; 4. a guide mechanism; 41. a guide shaft; 5. an upper pressure sensor; 6. an elastic material fixing bracket; 7. a down force sensor; 8. a load-bearing platform; 9. a support bar; 10. a support plate; 11. a sliding assembly; 111. a slide rail; 112. a slider; 12. a slide rail clamp; 13. fastening holes; 14. a limiting column; 15. a connecting frame; 16. a foot cup.
Detailed Description
The present invention provides a pressure testing device for elastic material, which is explained and explained in detail below with reference to the attached drawings.
The embodiment specifically discloses a pressure testing device for an elastic material (hereinafter referred to as a pressure testing device), as shown in fig. 1, the pressure testing device comprises a pressure loading mechanism 3, an upper pressure sensor 5, an elastic material fixing support 6, a lower pressure sensor 7 and a plurality of supporting rods 9, wherein the pressure loading mechanism 3 is connected with the elastic material fixing support 6 and is used for driving the elastic material fixing support 6 to move up and down; the upper pressure sensor 5 is fixed between the pressure loading mechanism 3 and the elastic material fixing support 6 and used for detecting the output pressure of the pressure loading mechanism 3; the elastic material fixing bracket 6 is used for fixing the elastic material to be tested on the lower surface of the elastic material fixing bracket; a plurality of support rods 9 are fixed below the elastic material fixing support 6 and used for supporting the lower pressure sensor 7, and the support rods 9 can move in the height direction and the horizontal direction; one or more lower pressure sensors 7 arranged along the length direction of each supporting rod 9 are fixed on the upper surface of each supporting rod 9, and each lower pressure sensor 7 is used for detecting the bearing pressure of the bearing surface of the corresponding lower pressure sensor 7 when the pressure loading mechanism 3 presses the elastic material to be tested down to the corresponding lower pressure sensor 7.
The pressure testing device of the embodiment further comprises a frame 1 for supporting the pressure loading mechanism 3 and the supporting rod 9, wherein the frame 1 comprises a frame and a side plate fixed on the side part of the frame. As shown in fig. 1 and 2, a support plate 10 is fixed above the frame 1, the pressure loading mechanism 3 is fixed on the support plate 10, and a pressurizing part of the pressure loading mechanism 3 moves up and down relative to the support plate 10; in this embodiment, the pressure loading mechanism 3 is an electric cylinder, a servo motor of the electric cylinder is fixed above the support plate 10, the servo motor is fixedly connected with the support plate, an expansion link of the electric cylinder can extend and retract up and down, and the expansion link of the electric cylinder is located below the support plate 10 and penetrates into a frame of the frame 1.
As shown in fig. 1 and 2, in the present embodiment, the upper pressure sensor 5 is fixed on the upper surface of the elastic material fixing support 6, the upper pressure sensor 5 is located below the pressure loading mechanism 3, the elastic material fixing support 6 fixes the elastic material to be tested on the lower surface thereof, and the elastic material can be adhered to the lower surface of the elastic material fixing support 6 by an adhesive method. When the pressure loading mechanism 3 loads the downward pressure, the pressing part of the pressure loading mechanism 3 firstly contacts with the upper pressure sensor 5, and then continues to press downward to make the elastic material fixing bracket 6 move downward, and the upper pressure sensor 5 is used for detecting the output pressure of the pressure loading mechanism 3.
In some preferred embodiments, the pressure testing apparatus further includes a guiding mechanism 4, the guiding mechanism 4 is used for guiding the pressure loading mechanism 3 to apply downward pressure, the lower end of the guiding mechanism 4 is fixedly connected with the elastic material fixing support 6, so that the pressure loading mechanism applies stable and uniform pressure to the elastic material, the guiding mechanism 4 is driven to move downward while the pressure loading mechanism presses the elastic material fixing support, and the guiding mechanism plays a guiding role, so that the pressure loading mechanism 3 stably presses downward.
The guide mechanism 4 is connected with the support plate 10 in a vertically sliding manner, in this embodiment, the guide mechanism 4 includes two guide shafts 41 parallel to each other, the two guide shafts 41 are distributed on two sides of the pressure loading mechanism 3, preferably, the two guide shafts 41 are symmetrically distributed on two sides of the pressure loading mechanism 3, the guide shafts 41 are parallel to the telescopic rods of the electric cylinders, the support plate 10 is provided with guide holes for the guide shafts 41 to pass through, the lower ends of the guide shafts 41 are fixedly connected with the upper surface of the elastic material fixing bracket, the guide shafts 41 slide downwards in the guide holes under the driving of the pressure loading mechanism 3, the two guide shafts 41 are symmetrically distributed and move downwards at the same time, so that the left side and the right side of the elastic material fixing bracket are kept balanced, and the stress of the elastic material is uniform. The length of guiding axle 41 is greater than the biggest flexible stroke of electric jar telescopic link, avoids the telescopic link all to slide in the below of backup pad 10, can't reset, can't play the guide effect when testing next time. The top of the guide shaft 41 can also be provided with a limiting block with an outer diameter larger than the guide hole, so as to play a limiting role.
In this embodiment, the fixing groove is formed on the upper surface of the elastic material fixing support 6, the upper pressure sensor 5 is fixed in the fixing groove, and the bearing surface of the upper pressure sensor 5 protrudes out of the notch of the fixing groove.
The testing device of the embodiment further comprises a reset connecting mechanism, wherein the reset connecting mechanism is used for connecting the pressurizing part of the pressure loading mechanism and the elastic material fixing support to enable the pressure loading mechanism to drive the elastic material fixing support to move upwards, so that reset is realized, and preparation is made for next testing.
As shown in fig. 1 and 2, the reset connection mechanism includes a reset column 14 and a connection frame 15, the connection frame is fixedly connected to the elastic material fixing support 6, the connection frame 15 is in an inverted U shape and is fixedly connected to the upper surface of the elastic material fixing support 6, the connection frame 15 is erected above the fixing groove and is located above the upper pressure sensor 5, and two ends of the connection frame 15 straddle two sides of the fixing groove of the elastic material fixing support 6. The limiting column 14 is step-shaped, the end part of the column with the smaller outer diameter of the limiting column 14 is connected with the pressurizing part of the pressure loading mechanism, the outer diameter of the column above the limiting column 14 is smaller than that of the column below, the top of the limiting column 14 is fixedly connected with the bottom of the telescopic rod of the electric cylinder, the top of the connecting frame 15 is provided with a limiting hole, the limiting hole is sleeved on the column with the smaller outer diameter of the limiting column 14, and the aperture of the limiting hole is smaller than that of the column with the larger outer diameter of the limiting column 14. The length of the column body with the smaller outer diameter of the limiting column 14 is not less than the maximum telescopic stroke of the telescopic rod of the electric cylinder; the maximum cross section of the limiting column 14 is smaller than or equal to the cross section of the upper pressure sensor 5, so that when the telescopic rod of the electric cylinder is pressed down, the limiting column 14 can completely act on the upper end of the upper pressure sensor 5, and the problem that the output pressure of the electric cylinder measured by the upper pressure sensor 5 is inaccurate due to the fact that the limiting column 14 is supported on the elastic material fixing support 6 around the fixing groove is avoided. In the process of pressing down the electric cylinder, the telescopic rod of the electric cylinder drives the limit column 14 to contact the upper pressure sensor 5 firstly and then press down the elastic material fixing support 6, so that the guide shaft 41 connected with the elastic material fixing support 6 further slides downwards in the guide hole; after the completion of pushing down, the telescopic link of electric jar withdraws, because the external diameter of the great cylinder of spacing post 14 external diameter is greater than the aperture in spacing hole, can drive the carriage 15 and elastic material fixed bolster 6 and rise and reset to drive guiding axle 41 and also reset, prepare for next test, can realize continuous test.
The step-shaped limiting column 14 of the embodiment can be composed of a stud and a nut, the nut is in threaded connection with the lower portion of the bolt, the top of the bolt is fixedly connected with the bottom of the telescopic rod of the electric cylinder, the portion, located outside the nut, of the bolt serves as a cylinder with a smaller outer diameter and is arranged in the limiting hole in a penetrating mode, and the nut is located below the connecting frame 15 and used for pressing down the pressure sensor 5. The stud and the nut are used as the limiting column 14, so that the installation and the disassembly are convenient.
As shown in fig. 3, a plurality of support rods 9 are fixed below the elastic material fixing support 6, the support rods 9 can move in both height direction and horizontal direction, in this embodiment, the plurality of support rods 9 can be arranged in parallel in the horizontal direction, and by adjusting the height of each support rod, the upper surfaces of the plurality of support rods 9 are in the same plane to form a support plane or a support step plane; when the upper surfaces of the supporting rods 9 are positioned on the same plane, the pressure testing device is suitable for the pressure test of a plane elastic material; when step surfaces are formed among the plurality of supporting rods 9, the pressure testing device is suitable for pressure testing of the elastic material with the special-shaped surface, can simulate various scene tests, and is high in universality. The movement of the support bars 9 in the horizontal direction allows to adjust the horizontal position of the forming support surface with respect to the elastic material to be tested, and also the relative position and distance between the support bars, and thus the shape of the forming support surface. One or more lower pressure sensors 7 arranged along the length direction of the supporting rod 9 are fixed on the upper surface of each supporting rod 9, and a bearing platform 8 is correspondingly fixed above each lower pressure sensor 7; when the elastic material to be tested is driven by the elastic material fixing support 6 to move downwards and is pressed to the lower pressure sensor 7, the lower pressure sensor 7 can measure the bearing force borne by the bearing platform 8 above the lower pressure sensor. When a plurality of lower pressure sensors 7 are fixed on the support rod 9, the pressure born by the elastic material at different positions can be tested, the pressure distribution condition is known, and the elastic performance of the elastic material at different positions can be further tested.
A plurality of fixing grooves are formed in the supporting rods 9 along the length direction, the lower pressure sensors 7 are fixed in the corresponding fixing grooves, and the number of the lower pressure sensors 7 fixed on each supporting rod 9 is set according to the size of the elastic material and actual test requirements.
The internal thread hole has all been seted up to two tip of bracing piece 9, and the axial in internal thread hole all is equipped with a plurality of fastening holes 13 that supply fastening bolt to pass along direction of height and horizontal direction along the length direction of bracing piece 9, two sides of frame 1 (on the curb plate promptly), and fastening bolt matches with the internal thread hole, adjusts the height and the horizontal position of bracing piece 9 through the fastening hole 13 of selecting fastening bolt to pass. Fastening holes 13 are formed in the side plates on the left side and the right side of the frame, and fastening bolts penetrate through the fastening holes 13 and then are in threaded connection with internal thread holes in the end portions of the supporting rods 9. After all the support rods 9 are fixed, a support plane or a support step surface is formed for simulating different scenes. The whole process is convenient to adjust and install, and the universality is high.
The testing process of the testing device of the embodiment for testing the performance of the elastic material can be controlled by the control system 2, the pressure loading mechanism 3, the upper pressure sensor 5 and the lower pressure sensor 7 are respectively electrically connected with the control system 2, the control system 2 is used for controlling parameters such as a pressing stroke, a pressing speed, pressing times and the like of the pressure loading mechanism 3, and the control system 2 receives pressure values measured by the upper pressure sensor 5 and the lower pressure sensor 7 and carries out corresponding calculation to obtain the performance of the elastic material to be tested. The control system 2 of the embodiment adopts a control system of the existing pressure testing device, has an automatic programming page, can set the pressure value of each pressing, the repeated pressing times and the frequency, can calculate the material performance according to the pressure value, such as resilience, maximum compression ratio and the like, can automatically draw the curves of elasticity and material deformation, and can also test the service life and aging curve changes of a single elastic material under the pressing condition.
The testing arrangement accessible control system 2 automatic control of this embodiment, and the drive mechanism of cooperation electric jar realizes closed-loop servo control, and the precision degree of pressure stroke is higher, increases simultaneously and goes up pressure sensor 5 cooperation and use, ability accurate control thrust size.
In some embodiments, the supporting plate 10 is slidably connected to the frame 1, so as to drive the pressure loading mechanism 3, the elastic material fixing bracket 6 and the guiding mechanism 4 on the supporting plate 10 to slide relative to the frame 1, and adjust the relative position between the elastic material fixing bracket 6 and the supporting rod 9, i.e. adjust the pressed position of the elastic material to be tested. In this embodiment, the supporting plate 10 is slidably connected to the frame 1 through a sliding assembly 11, the sliding assembly 11 includes a sliding rail 111 and a sliding block 112, one of the sliding rail 111 and the sliding block 112 is fixed on the supporting plate 10, the other of the sliding rail 111 and the sliding block 112 is fixed on the frame 1, and the sliding rail clamp 12 is fixed on the supporting plate 10. The lower surface of the supporting plate 10 is fixed with a slide rail 111, the slide block 112 is fixed on the upper surface of the rack 1, the slide block 112 is clamped into a slide groove of the slide rail 111, the supporting plate 10 is moved to enable the slide rail 111 to slide along the slide block 112, the slide rail clamp 12 is fixed on the lower surface of the supporting plate 10 and located in front of the slide rail 111, the slide rail 111 is locked and slides, the supporting plate 10 slides to a specified position and then is locked and slid through the slide rail clamp 12, stability during pressure testing is guaranteed, and slipping of the slide rail 111 is avoided. Or, the slide block 112 is fixed on the lower surface of the support plate 10, the slide rail 111 is fixed on the upper surface of the frame 1, the slide rail clamp 12 is fixed on the lower surface of the support plate 10 and located in front of the slide block 112, the slide block 112 is clamped into the slide groove of the slide rail 111, the support plate 10 is moved so that the slide block 112 slides along the slide rail 111, and the support plate 10 is locked at a designated position by the slide rail clamp 12.
As shown in fig. 1 to 3, two ends of the supporting rod are connected to the left and right sides of the frame, and the sliding rail 111 and the sliding block 112 are disposed perpendicular to the supporting rod, so that the pressure loading mechanism 3, the elastic material fixing bracket 6, and the guiding mechanism can slide in a direction perpendicular to the supporting rod, and adjust a pressed position of the elastic material to be tested.
The four corners at the bottom of the frame 1 are fixed with the foot cups 16 to ensure the balance of the testing device.
The following illustrates the process of using the test device of this embodiment to perform the resilience of an elastic material:
the first step is as follows: fixing an elastic material to be tested on the lower surface of the elastic material fixing support through a double-sided adhesive tape, and ensuring that the plane of the elastic material is flat after the adhesive is well adhered;
the second step: inputting the thickness, the compression ratio and the compression speed of the elastic material in the control system 2, and controlling to start a single test;
the third step: the electric cylinder applies downward pressure according to the control of the control system 2, the downward pressing elastic material fixing support 6 presses the elastic material to the downward pressure sensor, and the downward pressing is stopped after a preset compression ratio is reached;
the fourth step: the test is completed, the output pressure of the electric cylinder measured by the upper pressure sensor 5 is transmitted to the control system 2, the bearing pressure of the bearing platform 8 measured by the lower pressure sensor 7 is transmitted to the control system 2, the resilience force of the elastic material at the specified compression ratio is calculated by the control system 2 according to the two pressure values, and a curve graph of the resilience force and the deformation quantity of the material in the compression process of the elastic material can be drawn and derived.
The following illustrates the procedure of the maximum compression ratio test of the elastic material using the test apparatus of this embodiment:
the first step is as follows: fixing the elastic material to be tested on the lower surface of the elastic material fixing support through a double-sided adhesive tape, and ensuring the flat surface of the elastic material after the adhesive is well adhered;
the second step is that: inputting the thickness and the compression speed of the elastic material in the control system 2;
the third step: the electric cylinder applies a downward pressure at a slow speed according to the control of the control system 2, the elastic material fixing support 6 is pressed downward to press the elastic material to the downward pressure sensor, and the downward pressure is stopped when the pressure measured by the downward pressure sensor 7 is not changed any more;
the fourth step: and (4) completing the test, measuring the thickness of the elastic material at the moment, and calculating to obtain the maximum compression ratio of the elastic material.
The following illustrates the process of using the test apparatus of this example to perform elastomeric material re-use performance and compression life tests:
the first step is as follows: fixing an elastic material to be tested on the lower surface of the elastic material fixing support through a double-sided adhesive tape, and ensuring that the plane of the material is flat after the adhesive is well adhered;
the second step is that: inputting the thickness, the compression ratio, the compression frequency and the compression times of the elastic material in the control system 2, and controlling the continuous operation through the control system 2 to carry out continuous testing;
the third step: the electric cylinder is pressed down and reset according to parameters preset by the control system 2, continuous testing is carried out, after the testing is finished, the elastic material is placed at normal temperature and stands for 30 minutes, and then the thickness change of the elastic material is tested, so that the coarse compression deformation rate is converted;
the fourth step: and (3) deriving a curve graph of the pressure change values and times of the upper pressure sensor 5 and the different lower pressure sensors 7, and reading the resilience change condition of the elastic material corresponding to the same time point of the material compression period in the set movement times, so as to measure the elastic failure condition of the material.
Before testing, the number of the support rods 9 and the height and horizontal position of the support rods 9 are adjusted according to the testing requirements and the shape and size of the elastic material, the size and area of the support surface correspondingly formed by the number of the support rods 9 are adjusted, the support surface correspondingly formed by the height of the support rods 9 is a plane or a step surface, and the shape of the support surface is adjusted according to the testing requirements. When the height difference between the supporting rods 9 is zero, the supporting surface is a plane and is used for measuring the relationship between the upper and lower resilience force and the deformation quantity of the plane elastic material; the control system 2 can be repeatedly executed and can be used for judging the stability of the relationship between the resilience force and the deformation quantity; when the height difference between the supporting rods 9 is not zero, the pressure distribution condition of the elastic material with the special-shaped surface can be measured, a plurality of step surfaces can be established to establish a curve of the upper rebound force and the lower rebound force and the deformation, and the control system 2 can be repeatedly executed and can be used for judging the stability of the relation between the rebound force and the deformation.
The number and the positions of the lower pressure sensors 7 on the supporting surface formed by the supporting rods 9 are set according to test requirements, and the lower pressure sensors 7 at different positions can test the performance of the elastic material at different positions. The control system 2 can accurately acquire the position information of the lower pressure sensor 7 and acquire the information of the compression ratio, the rebound force/compression ratio curve and the like of the elastic material at the position.
The testing device of the embodiment can quickly measure the pressure distribution condition of the plane elastic material and the special-shaped surface elastic material and the material performance of the material, such as resilience, maximum compression ratio, the compression service life of the material and the like; the testing device can simulate the use conditions of the elastic material in different scenes, has strong compatibility, is convenient to operate and use, can adjust and set relevant parameters according to the requirements of the testing device, and has strong flexibility.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the description herein, references to the description of the term "the present embodiment," "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and simplifications made in the spirit of the present invention are intended to be included in the scope of the present invention.
Claims (10)
1. A pressure testing device for elastic materials is characterized by comprising a pressure loading mechanism (3), an upper pressure sensor (5), an elastic material fixing support (6), a lower pressure sensor (7) and a plurality of supporting rods (9),
the pressure loading mechanism (3) is connected with the elastic material fixing support (6) and is used for driving the elastic material fixing support (6) to move up and down;
the upper pressure sensor (5) is fixed between the pressure loading mechanism (3) and the elastic material fixing support (6) and is used for detecting the output pressure of the pressure loading mechanism (3);
the elastic material fixing bracket (6) is used for fixing the elastic material to be tested on the lower surface of the elastic material fixing bracket;
the plurality of supporting rods (9) are fixed below the elastic material fixing support (6) and used for supporting the lower pressure sensor (7), and the supporting rods (9) can move in the height direction and the horizontal direction;
every the upper surface of bracing piece (9) is fixed with one or more and arranges along bracing piece (9) length direction push down force transducer (7), push down force transducer (7) are used for pressure loading mechanism (3) will await measuring elastic material pushes down to detect the bearing pressure of self loading face when push down force transducer (7).
2. The device for pressure testing of elastomeric materials according to claim 1, characterized in that said pressure loading means (3) and said elastomeric material fixing support (6) are both slidable with respect to said supporting bar (9).
3. The device for testing the pressure of the elastic material according to claim 2, further comprising a frame (1) for supporting the pressure loading mechanism (3) and the support rod (9), wherein a support plate (10) is fixed above the frame (1), the support plate (10) is slidably connected with the frame (1), the pressure loading mechanism (3) is fixed on the support plate (10), a pressurizing part of the pressure loading mechanism (3) moves up and down relative to the support plate (10), and the support rod (9) is fixedly connected with the frame (1).
4. The device for testing the pressure of the elastic material according to claim 3, wherein the supporting plate (10) is slidably connected to the frame (1) through a sliding assembly (11), the sliding assembly (11) comprises a sliding rail (111) and a sliding block (112), one of the sliding rail (111) and the sliding block (112) is fixed on the supporting plate (10), the other of the sliding rail (111) and the sliding block (112) is fixed on the frame (1), and a sliding rail clamp (12) is fixed on the supporting plate (10).
5. The device for testing the pressure of the elastic material according to claim 3 or 4, further comprising a guide mechanism (4), wherein the guide mechanism (4) is used for guiding the pressure loading mechanism (3) to apply downward pressure, the lower end of the guide mechanism (4) is fixedly connected with the elastic material fixing bracket (6), and the guide mechanism (4) is connected with the support plate (10) in a vertically sliding manner.
6. The device for testing the pressure of the elastic material according to claim 5, wherein the guide mechanism (4) comprises two guide shafts (41) parallel to each other, the two guide shafts (41) are distributed on two sides of the pressure loading mechanism (3), a guide hole for the guide shaft (41) to pass through is formed in the support plate (10), and the guide shaft (41) is driven by the pressure loading mechanism (3) to slide up and down in the guide hole.
7. The pressure testing device for the elastic material according to claim 3, wherein the two ends of the supporting rod (9) are provided with internal threaded holes, the axial direction of the internal threaded holes is along the length direction of the supporting rod (9), the two side surfaces of the rack (1) are provided with a plurality of fastening holes (13) for fastening bolts to pass through along the height direction and the horizontal direction, the fastening bolts are matched with the internal threaded holes, and the height and the horizontal position of the supporting rod (9) are adjusted by selecting the fastening holes (13) through which the fastening bolts pass.
8. The device for testing the pressure of an elastic material according to claim 1, further comprising a reset connection mechanism for connecting the pressing portion of the pressure loading mechanism and the elastic material fixing bracket so that the pressure loading mechanism drives the elastic material fixing bracket to move upward.
9. The device for testing the pressure of the elastic material according to claim 8, wherein the reset connecting piece comprises a limiting column (14) and a connecting frame (15), the connecting frame (15) is fixedly connected with the elastic material fixing support (6), the limiting column (14) is step-shaped, the end part of the column with the smaller outer diameter of the limiting column (14) is connected with the pressurizing part of the pressure loading mechanism, a limiting hole is formed in the connecting frame (15), the limiting hole is sleeved on the column with the smaller outer diameter of the limiting column (14), and the diameter of the limiting hole is smaller than the outer diameter of the column with the larger outer diameter of the limiting column (14).
10. Device for pressure testing of elastic materials according to claim 3, characterized in that the four corners of the bottom of the frame (1) are fixed with a foot cup (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210912270.4A CN115112482A (en) | 2022-07-29 | 2022-07-29 | Pressure testing device for elastic material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210912270.4A CN115112482A (en) | 2022-07-29 | 2022-07-29 | Pressure testing device for elastic material |
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| CN202210912270.4A Pending CN115112482A (en) | 2022-07-29 | 2022-07-29 | Pressure testing device for elastic material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115628976A (en) * | 2022-10-24 | 2023-01-20 | 陈松涛 | Building material strength detection system and detection method |
| CN116007795A (en) * | 2023-03-22 | 2023-04-25 | 山东万邦建筑科技有限公司 | Pressure testing mechanism and pressure adjusting device for phase-change energy storage material |
-
2022
- 2022-07-29 CN CN202210912270.4A patent/CN115112482A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115628976A (en) * | 2022-10-24 | 2023-01-20 | 陈松涛 | Building material strength detection system and detection method |
| CN115628976B (en) * | 2022-10-24 | 2023-07-28 | 中嘉(广东)工程检测有限公司 | Building material strength detection system and detection method |
| CN116007795A (en) * | 2023-03-22 | 2023-04-25 | 山东万邦建筑科技有限公司 | Pressure testing mechanism and pressure adjusting device for phase-change energy storage material |
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