CN111829882A - Universal testing machine - Google Patents
Universal testing machine Download PDFInfo
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- CN111829882A CN111829882A CN202010785323.1A CN202010785323A CN111829882A CN 111829882 A CN111829882 A CN 111829882A CN 202010785323 A CN202010785323 A CN 202010785323A CN 111829882 A CN111829882 A CN 111829882A
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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
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
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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
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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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
- G01N2203/0017—Tensile
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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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a universal testing machine.A moving mechanism is fixedly arranged on a fixed frame and is connected with a detection platform in a driving way; the lifting mechanism is fixedly arranged in the fixed frame and is connected with the cross beam in a driving way; the first testing assembly is arranged on the cross beam; the first testing component comprises a tension sensor and a drawing head; the tension sensor is connected with the cross beam in a sliding manner, one end of the drawing head is movably connected with the tension sensor, and the other end of the drawing head is detachably connected with the drawing block; the base material test block comprises a plurality of tested units; the units to be tested are distributed on the same surface of the base material test block. Adopt above-mentioned universal tester, a substrate test block surface can make the multiunit unit by survey, and substrate test block surface flatness intensity uniformity is good, improves the accuracy and the validity of testing data, and the one-time installation test improves the detection efficiency to the unit by survey up to a plurality of units by survey.
Description
Technical Field
The invention relates to the technical field of material testing equipment, in particular to a universal testing machine.
Background
The universal material testing machine is also called a universal tensile machine or an electronic tensile machine, and adopts an independent servo loading system and a high-precision broadband electro-hydraulic servo valve to ensure high precision, high efficiency, low noise and quick response of the system; and an independent hydraulic clamping system is adopted, so that the low-noise stable operation of the system is ensured, and the sample is firmly clamped and does not slip in the test process. The universal material testing machine adopts a microcomputer control full-digital broadband electro-hydraulic servo valve to drive a precise hydraulic cylinder, and a microcomputer control system automatically controls a plurality of modes of testing force, displacement and deformation to complete the tensile, compression and bending tests of a sample.
The universal testing machine commonly used in the market at present has the following defects: only one base material test block can be filled, only one tested unit can be manufactured by one base material test block, the base material test block needs to be refilled once each test is carried out, and the equipment detection efficiency is low; because only one tested unit can be manufactured by one substrate test block, the number of the substrate test blocks to be manufactured is large, the uniformity of the surface flatness strength of the substrate test blocks is low, and the accuracy and the effectiveness of measured data are influenced.
Disclosure of Invention
In order to solve the technical problems that in the prior art, only one tested unit is manufactured on a base material test block, so that the detection efficiency of the universal testing machine is low, and because only one tested unit is manufactured on the base material test block, more base material test blocks need to be manufactured, the uniformity of the surface flatness strength of the base material test blocks is low, and the accuracy and the effectiveness of measured data are influenced. The embodiment of the invention provides a universal testing machine, which has the following specific technical scheme:
the embodiment of the invention provides a universal testing machine, which comprises: the device comprises a detection platform, a fixed frame, a lifting mechanism, a moving mechanism, a first test component, a base material test block, a cross beam, a drawing block and a controller;
the moving mechanism is fixedly arranged on the fixed frame, is in driving connection with the detection platform and drives the detection platform to move back and forth; the detection surface of the detection platform is parallel to the horizontal plane; the lifting mechanism is fixedly arranged in the fixed frame and is in driving connection with the cross beam; the first testing assembly is arranged on the cross beam; the first testing assembly is positioned above the detection platform, and the lifting mechanism drives the cross beam to move up and down along the direction vertical to the horizontal plane;
the first testing assembly comprises a tension sensor and a drawing head; the tension sensor is connected with the cross beam in a sliding mode, the drawing head is arranged at the bottom of the tension sensor, one end of the drawing head is movably connected with the tension sensor, and the other end of the drawing head is detachably connected with the drawing block;
the base material test block is detachably connected with the detection platform and comprises a plurality of units to be detected; the tested units are distributed on the same surface of the base material test block; the size of the bottom surface of the drawing block is matched with the size of the unit to be tested;
the controller is connected with the lifting mechanism, the moving mechanism and the tension sensor in a control mode.
Optionally, the lifting mechanism includes a driving motor, a first lead screw, a second lead screw, a driving gear, a first gear, a second gear, a bearing support, a first bearing support, and a second bearing support;
the driving gear is arranged at the working end of the driving motor, the driving gear is respectively in driving connection with the first gear and the second gear, the first gear is fixed on the first lead screw, and the axis of the first gear is collinear with the axis of the first lead screw; the second gear is fixed on the second lead screw, and the axis of the second gear is collinear with the axis of the second lead screw; the axis of the first lead screw is parallel to the axis of the second lead screw, and the axis of the first lead screw is perpendicular to the detection surface of the detection platform; the bearing support is arranged at the bottom of the fixing frame, and two bearings which are respectively matched with the bottom of the first lead screw and the bottom of the second lead screw are fixedly arranged on the bearing support; the first bearing support is arranged at the top of the first lead screw, and a bearing is arranged at the joint of the first lead screw and the first bearing support; the second bearing support is arranged at the top of the second lead screw, and a bearing is arranged at the joint of the second lead screw and the second bearing support;
one end of the cross beam is in threaded connection with the first lead screw, the other end of the cross beam is in threaded connection with the second lead screw, and in the process that the first lead screw and the second lead screw rotate simultaneously, the cross beam moves up and down in the direction perpendicular to the horizontal plane.
Optionally, the moving mechanism includes a rotating motor, a driving gear, a driven gear, a rotating shaft, two driving wheels, two driven wheels, a first rail, and a second rail; the first track and the second track are laid between two side walls of the fixed frame, the first track and the second track are arranged in parallel, the rotating motor is fixed at the bottom of the detection platform, the driving gear is arranged at the working end of the rotating motor, the driving gear is meshed with the driven gear, the driven gear is fixed on the rotating shaft, the axis of the rotating shaft is collinear with the axis of the driven gear, one end of the rotating shaft is fixedly connected with one driving wheel, the other end of the rotating shaft is fixedly connected with the other driving wheel, a rotating shaft support is rotatably connected with the rotating shaft, and the rotating shaft support is fixedly arranged at the bottom of the detection platform; the two driven wheels are respectively and rotatably connected to the bottom of the detection platform, and the detection platform moves back and forth under the driving action of the rotating motor and the limitation of the two driving wheels and the two driven wheels on the first track and the second track; the first rail and the second rail limit the rotating shaft to move along the direction vertical to the horizontal plane.
Optionally, a sliding block is arranged at the top of the tension sensor, a sliding groove matched with the sliding block is formed in the beam, the sliding block is connected with the sliding groove in a sliding manner, the tension sensor is connected with the sliding block in a threaded manner, and the tension sensor is connected with the drawing head in a threaded manner.
Optionally, a connecting groove is formed in the top of the drawing block, and the drawing head is clamped in the connecting groove.
Optionally, an external thread is arranged on the outer side wall of the drawing head, an internal thread is arranged at the top of the drawing block, the external thread is matched with the internal thread, and the drawing head is in threaded connection with the drawing block.
Optionally, the pull-out device further comprises a connecting piece, one end of the connecting piece is in threaded connection with the tension sensor, and the other end of the connecting piece is connected with the pull-out head in a clamping mode.
Optionally, the test device further comprises a second test component; the second testing component comprises a spoke type sensor, a first clamp and a second clamp; the spoke type sensor is fixedly arranged at the top of the fixing frame, and the first clamp is detachably connected with the spoke type sensor; the second clamp is arranged at the top of the cross beam and is positioned under the first clamp.
Optionally, at least two second test assemblies are included, and the spoke sensors in any two second test assemblies have different ranges.
Optionally, the device comprises at least two first testing assemblies, and each first testing assembly is connected with the beam in a sliding manner; the span is different between the tension sensors in any two first test assemblies.
The embodiment of the invention provides a universal testing machine, which comprises: the device comprises a detection platform, a fixed frame, a lifting mechanism, a moving mechanism, a first test component, a base material test block, a cross beam, a drawing block and a controller; the moving mechanism is fixedly arranged on the fixed frame, is in driving connection with the detection platform and drives the detection platform to move back and forth; the detection surface of the detection platform is parallel to the horizontal plane; the lifting mechanism is fixedly arranged in the fixed frame and is connected with the cross beam in a driving way; the first testing assembly is arranged on the cross beam; the first testing assembly is positioned above the detection platform, and the lifting mechanism drives the cross beam to move up and down along the direction vertical to the horizontal plane; the first testing component comprises a tension sensor and a drawing head; the pull sensor is connected with the cross beam in a sliding manner, the drawing head is arranged at the bottom of the pull sensor, one end of the drawing head is movably connected with the pull sensor, and the other end of the drawing head is detachably connected with the drawing block; the base material test block is detachably connected with the detection platform and comprises a plurality of units to be detected; all the tested units are distributed on the same surface of the base material test block; the size of the bottom surface of the drawing block is matched with the size of the unit to be measured; the controller is connected with the lifting mechanism, the moving mechanism and the tension sensor in a control mode.
In practical application, a substrate test block with a preset size is selected, a preset number of units to be tested are arranged on the substrate test block, a drawing block is adhered to cement mortar in the units to be tested in a preset adhesion mode, a controller controls a lifting mechanism to work, the lifting mechanism drives a cross beam to move up and down until the cross beam moves to a position where a drawing head and the drawing block can be connected, a user selects a preset sample block to be tested, the controller controls a moving mechanism to drive a detection platform to move, the preset drawing block and the drawing head are located on the same vertical face, the user manually slides a first test assembly to enable the first test assembly to move right above the preset drawing block and connect the drawing head and the drawing block, then the controller controls the lifting mechanism to move upwards, the cross beam moves upwards along with the upward movement of the lifting mechanism, at the moment, the drawing head draws the sample block to be tested, and the tension sensor is stressed and outputs a tension value until the drawing head separates the sample to be measured from the substrate test block, and the tension value of the tension sensor in the drawing process is obtained, so that the drawing test is completed. By adopting the universal testing machine provided by the embodiment of the invention, only one substrate test block needs to be manufactured, a plurality of groups of tested units can be manufactured on the surface of the substrate test block, the uniformity of the surface flatness strength of the substrate test block is good, the accuracy and the effectiveness of detection data are greatly improved, the test is carried out once until a plurality of tested units are tested, the detection efficiency of the tested units is greatly improved, and the preparation time of the substrate test block required by detection is greatly shortened.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a schematic structural diagram of a universal tester provided in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another universal testing machine provided in the embodiment of the present invention;
FIG. 3 is a schematic view of a partial structure of a universal testing machine according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a cross beam and a first testing assembly according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a moving mechanism according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a connector according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a universal testing machine provided with two sets of first testing components according to an embodiment of the present invention;
fig. 8 is a schematic view of a connection structure between a first rail and a driving wheel according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of a control connection of a controller according to an embodiment of the present invention;
FIG. 10 is a schematic structural diagram of another universal testing machine according to an embodiment of the present invention.
Fig. 11 is a schematic view of a connection structure between a substrate test block and a detection platform according to an embodiment of the present invention.
Reference numerals:
the device comprises a detection platform 1, a fixed frame 2, a base material test block 3, a cross beam 4, a drawing block 5, a controller 6, a tension sensor 7, a drawing head 8, a tested unit 9, a driving motor 10, a first lead screw 11, a second lead screw 12, a driving gear 13, a first gear 14, a second gear 15, a bearing support 16, a first bearing support 17, a second bearing support 18, a bearing 19, a rotating motor 20, a driving gear 21, a driven gear 22, a rotating shaft 23, two driving wheels 24, two driven wheels 25, a first track 26, a second track 27, a rotating shaft support 28, a sliding block 29, a sliding groove 30, a connecting groove 31, a connecting piece 32, a spoke type sensor 33, a first clamp 34, a second clamp 35, a steel sheet 36, a pressing plate 37 and an upright column bolt 38.
Detailed Description
The technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention.
Referring to fig. 1 to 9, an embodiment of the present invention provides a universal testing machine, including: the device comprises a detection platform 1, a fixed frame 2, a lifting mechanism, a moving mechanism, a first test component, a base material test block 3, a cross beam 4, a drawing block 5 and a controller 6; the moving mechanism is fixedly arranged on the fixed frame 2, is in driving connection with the detection platform 1, and drives the detection platform 1 to move back and forth; the detection surface of the detection platform 1 is parallel to the horizontal plane; the lifting mechanism is fixedly arranged in the fixed frame 2 and is in driving connection with the cross beam 4; the first testing assembly is arranged on the cross beam 4; the first testing assembly is positioned above the detection platform 1, and the lifting mechanism drives the cross beam 4 to move up and down along the direction vertical to the horizontal plane; the first testing component comprises a tension sensor 7 and a drawing head 8; the tension sensor 7 is connected with the cross beam 4 in a sliding mode, the drawing head 8 is arranged at the bottom of the tension sensor 7, one end of the drawing head 8 is movably connected with the tension sensor 7, and the other end of the drawing head 8 is detachably connected with the drawing block 5; the base material test block 3 is detachably connected with the detection platform 1, and the base material test block 3 comprises a plurality of units to be detected 9; the units to be tested 9 are distributed on the same surface of the base material test block 3; the size of the bottom surface of the drawing block 5 is matched with the size of the unit to be tested 9; the controller 6 is connected with the lifting mechanism, the moving mechanism and the tension sensor 7 in a control mode.
The controller 6 may be a PLC programmable controller 6; the lifting structure can be any structure which can realize lifting and can be controlled by the PLC controller 6, the moving mechanism can be any structure which can realize moving and can be controlled by the PLC controller 6, the substrate test block 3 can be selected according to the actual test requirements of a user, for example, when the user needs to test the bonding performance of the substrate of the insulation board, the user can select the substrate test block 3 to be made of the insulation board material, when the user needs to test the bonding performance of the cement substrate, the user can select the substrate test block 3 to be made of insulation mortar or waterproof mortar, concretely, the user can prepare the substrate test block 3 according to the material tested by the user, it can be understood that the preparation method of the substrate test block 3 belongs to the conventional technical means in the field, for example, when the substrate test block 3 is made of the insulation board, a user can directly select a required insulation board and cut the insulation board into a preset size, for example, the insulation board is cut into a square block of 40cm by 40cm, and a plurality of tested units 9 are arranged on the insulation board after cutting, the tested units 9 can be square grooves of 40mm by 40mm, certainly, grooves of other sizes or shapes, the specific user can select the units according to actual conditions, the tested units 9 can be uniformly distributed or randomly distributed on the base material test block 3, it is required to ensure that the tested units 9 are all independent individuals, the tested units 9 are not influenced by each other, then, cement mortar is placed in the tested units on the insulation board by using a cement mortar mold, cement mortar with preset standards can be prepared in advance, wherein the preset standards can refer to the conventional cement standards in the field, after the cement mortar is coated in the unit to be tested 9, the maintenance is performed for a predetermined period, for example, the maintenance is required for 10 days in the air, after the maintenance is completed, the pulling block 5 is bonded to the cement mortar in the unit to be tested 9 by using the glue, and after the bonding is completed, the pulling test can be performed by using the universal testing machine provided in this embodiment. The outer dimension of the cement mortar mould can be 70mm by 70mm, and the inner dimension is 40mm by 40 mm; similarly, when the bonding strength between the cement mortar and the cement base material needs to be measured, the existing conventional method can be selected to prepare the base material test block made of the cement material, and then the cement mortar is arranged in the unit to be measured 9 on the base material test block by using the preparation method. Please refer to fig. 11, when the heat insulation board is soft, the soft heat insulation board is first cut into a substrate test block with a size required by a user, and the process of mounting the substrate test block on the detection platform may be implemented as follows: arranging 6 upright bolts 38 on a detection platform in advance, utilizing the existing pressing plates 37 to press four corners of a base material test block, remaining two upright bolts 38 at two opposite sides of the base material test block for use, manufacturing a steel sheet 36 with a preset size, the predetermined size may be 20-20mm, two through holes are opened at both ends of the steel sheet 36, which is adapted to the outer diameter of the above-mentioned stud bolt 38, the above-mentioned two stud bolts 38 to be used are respectively passed through the above-mentioned two holes, the steel plate 36 is fixed to the column bolt 38 by a conventional nut, and by using the rigidity of the steel plate 36, the method can effectively carry out compression joint on the insulation board with soft texture, avoids the problems that in the drawing test process, when the drawing block 5 positioned in the middle of the heat-insulating plate is drawn due to the soft texture of the heat-insulating plate, the heat-insulating plate deforms, so that the accuracy of a detection result is influenced; of course, the number of the steel sheets 36 may be selected by a user according to actual conditions, and two steel sheets 36 may be provided, or a plurality of steel sheets 36 may be provided, only if the position of the unit to be measured 9 cannot be affected by the arrangement of the steel sheets 36, that is, the number and arrangement of the unit to be measured 9 cannot be affected, and the width of the steel sheets 36 needs to be smaller than the distance between two adjacent units to be measured 9.
The above illustrates how to prepare the base material test block and the size of the base material test block, but, of course, in this embodiment, the size of the unit 9 to be tested and the size of the base material test block 3 are not limited, and for example, when the bonding strength between the tile and the cement base material test block is tested, the size of the unit 9 to be tested may be 50mm by 50mm or 45mm by 90 mm.
It should be noted that the tension sensor 7 is an "S" type tension sensor 7, and can be obtained by direct purchasing, for example, the "S" type tension sensor 7 produced by beijing linois cheng corporation, and it is sufficient to directly purchase the "S" type tension sensor 7 to be applied to the scheme of this embodiment, it is understood that each manufacturer that generates the tension sensor 7 is equipped with a system or device for collecting the detection value of its tension sensor 7, that is, in this embodiment, it is sufficient to directly purchase a data obtaining system adapted to the "S" type tension sensor 7, and the "S" type tension sensor 7 can realize the function of communication with the data obtaining system through the existing data transmission line.
It should be noted that one end of the drawing head 8 is movably connected with the tension sensor 7, the connection mode may be threaded connection, an external thread is arranged at the end of the drawing head 8, the external thread is adapted to a threaded hole at the bottom of the tension sensor 7, and the drawing head 8 is directly screwed into the tension sensor 7; the other end of the drawing head 8 is detachably connected with the drawing block 5, the connection mode can be that an external thread is arranged at the end part of the drawing head 8, a thread blind hole is formed at the top of the drawing block 5, the drawing head 8 utilizes the external thread to be in threaded connection with the thread blind hole, the above-mentioned scheme of detaching and connecting is realized, the connection mode can also be that a clamping groove is formed at the top of the drawing block 5, the drawing block can be seen in the attached drawing 3, the end part of the drawing head 8 is arranged into a connecting block, and the connecting block is clamped into the clamping groove.
Specifically, a base material test block 3 with a predetermined size is selected, and a predetermined number of units to be tested 9 are arranged on the base material test block 3, where the predetermined number may be determined according to actual needs of a user, for example, when 6 tensile test data need to be acquired, 6 units to be tested 9 are arranged on the base material test block 3, the 6 units to be tested 9 may have the same or different sizes, in the setting process, the 6 units to be tested 9 may be uniformly distributed on the surface of the base material test block 3, and the size of the sample to be tested may be 40mm × 40 mm; the method comprises the steps of bonding a pulling block 5 on cement mortar in a tested unit 9 by a preset bonding mode, wherein the preset bonding mode can be that the pulling block 5 is bonded on the cement mortar in the tested unit 9 by using the purchased existing bonding glue directly, the embodiment does not limit the bonding glue specifically, a controller 6 controls a lifting mechanism to work, the lifting mechanism drives a cross beam 4 to move up and down until the cross beam stops moving to a position where a pulling head 8 and the pulling block 5 can be connected, a user selects a preset sample speed to be tested, the controller 6 controls a moving mechanism to drive a detection platform 1 to move, so that the preset pulling block 5 and the pulling head 8 are positioned on the same vertical plane, the user manually slides a first test component, the first test component is moved to be right above the preset pulling block 5, the pulling head 8 is connected with the pulling block 5, and then, the controller 6 controls the lifting mechanism to move upwards, the cross beam 4 moves upwards along with the lifting mechanism to move upwards, at the moment, the drawing head 8 draws the sample to be measured, the tension sensor 7 is stressed and outputs a tension value until the drawing head 8 separates the sample to be measured from the substrate test block 3, the tension value of the tension sensor 7 in the drawing process is obtained, and then the drawing test is completed. By adopting the universal testing machine provided by the embodiment of the invention, only one substrate test block 3 needs to be manufactured, a plurality of groups of tested units 9 can be manufactured on the surface of one substrate test block 3, the uniformity of the surface flatness and the strength of the substrate test block 3 is good, the accuracy and the effectiveness of detection data are greatly improved, the test is carried out once until a plurality of tested units 9 are tested, the detection efficiency of the tested units 9 is greatly improved, and the preparation time of the substrate test block 3 required by detection is greatly shortened.
In a specific embodiment, the lifting mechanism comprises a driving motor 10, a first lead screw 11, a second lead screw 12, a driving gear 13, a first gear 14, a second gear 15, a bearing support 16, a first bearing support 17 and a second bearing support 18; the driving gear 13 is arranged at the working end of the driving motor 10, the driving gear 13 is respectively connected with the first gear 14 and the second gear 15 in a driving manner, the first gear 14 is fixed on the first lead screw 11, and the axis of the first gear 14 is collinear with the axis of the first lead screw 11; the second gear 15 is fixed on the second lead screw 12, and the axis of the second gear 15 is collinear with the axis of the second lead screw 12; the axis of the first lead screw 11 is parallel to the axis of the second lead screw 12, and the axis of the first lead screw 11 is perpendicular to the detection surface of the detection platform 1; the bearing support 16 is arranged at the bottom of the fixed frame 2, and two bearings 19 which are respectively matched with the bottom of the first lead screw 11 and the bottom of the second lead screw 12 are fixedly arranged on the bearing support 16; the first bearing bracket 17 is arranged at the top of the first lead screw 11, and a bearing 19 is arranged at the joint of the first lead screw 11 and the first bearing bracket 17; the second bearing bracket 18 is arranged at the top of the second lead screw 12, and a bearing 19 is arranged at the joint of the second lead screw 12 and the second bearing bracket 18; one end of the cross beam 4 is in threaded connection with the first lead screw 11, the other end of the cross beam is in threaded connection with the second lead screw 12, and in the process that the first lead screw 11 and the second lead screw 12 rotate simultaneously, the cross beam 4 moves up and down in the direction perpendicular to the horizontal plane.
Specifically, in this embodiment, the controller 6 controls the driving motor 10 to rotate, the driving motor 10 drives the driving gear 13 disposed at the working end to rotate, the driving gear 13 is connected to the first gear 14 and the second gear 15 in a driving manner, in practical applications, the driving gear 13 may be connected to the first gear 14 and the second gear 15 in a driving manner through a transfer gear, or may be connected to the first gear 14 and the second gear 15 in a driving manner through a gear box, under the driving action of the driving gear 13, the first gear 14 and the second gear 15 rotate in the same direction or in different directions, when the first gear 14 and the second gear 15 rotate in the same direction, the thread directions of the first lead screw 11 and the second lead screw 12 are the same, and when the first gear 14 and the second gear 15 rotate in different directions, the thread directions of the first lead screw 11 and the second lead screw 12 are opposite, specifically, when the first gear 14 and the second gear 15 rotate, in the process of driving the first lead screw 11 and the second lead screw 12 to rotate, the cross beam 4 can horizontally rotate upwards or downwards; the bearing support 16 is used for fixing a bearing 19, a bearing 19 for limiting the axial movement of the first lead screw 11 is arranged on the bottom side wall of the first lead screw 11, and the bearing 19 is fixed on the bearing support 16, it should be noted that the outer side wall of the bearing 19 is fixed on the bearing support 16, the inner side wall of the bearing 19 is fixedly connected with the first lead screw 11, similarly, the bearing 19 is fixedly connected on the top side wall of the first lead screw 11, the bearing 19 is fixed on the first bearing support 17, the first bearing support 17 is fixed on the top of the fixing frame 2, so as to further limit the displacement of the first lead screw 11 along the axial direction thereof, during the working process, under the driving action of the driving gear 13, the first lead screw 11 rotates with the axial line of the bearing 19 as the axial line, similarly, the second lead screw 12 is arranged by adopting the same principle as that the first lead screw 11 is arranged, so as to ensure that the second lead screw 12 is driven by the driving gear 13, rotating along the axis thereof; the first lead screw 11 and the second lead screw 12 rotate synchronously, and then the cross beam 4 in threaded connection with the first lead screw 11 and the second lead screw 12 is driven to move up and down. The controller 6 is used for controlling the driving motor 10 to rotate, which belongs to the conventional technical means in the field, and the embodiment does not specifically limit the type and model of the driving motor 10; the control method of the controller 6 for controlling the drive motor 10 is not limited.
In one embodiment, the moving mechanism includes a rotating motor 20, a driving gear 21, a driven gear 22, a rotating shaft 23, two driving wheels 24, two driven wheels 25, a first rail 26, and a second rail 27; the first rail 26 and the second rail 27 are laid between two side walls of the fixed frame 2, the first rail 26 and the second rail 27 are arranged in parallel, the rotating motor 20 is fixed at the bottom of the detection platform 1, the driving gear 21 is arranged at the working end of the rotating motor 20, the driving gear 21 is meshed with the driven gear 22, the driven gear 22 is fixed on the rotating shaft 23, the axis of the rotating shaft 23 is collinear with the axis of the driven gear 22, one end of the rotating shaft 23 is fixedly connected with one driving wheel 24, the other end of the rotating shaft 23 is fixedly connected with the other driving wheel 24, a rotating shaft support 28 is rotatably connected with the rotating shaft 23, and the rotating shaft support 28 is fixedly arranged at the bottom of the detection platform 1; the two driven wheels 25 are respectively connected to the bottom of the detection platform 1 in a rotating manner, and the detection platform 1 moves back and forth under the driving action of the rotating motor 20 and the limitation of the two driving wheels 24 and the two driven wheels 25 on the first track 26 and the second track 27.
Specifically, when the detection platform 1 needs to move, the controller 6 controls the rotating motor 20 to rotate clockwise or counterclockwise, the motor rotates to drive the driving gear 21 to rotate, the driving gear 21 engages with the driven gear 22, the driven gear 22 rotates under the driving action of the driving gear 21, because the driven gear 22 is fixedly connected with the rotating shaft 23, the rotating shaft 23 is rotatably connected with the rotating shaft support 28, that is, the rotating shaft 23 can rotate on the rotating shaft support 28, the rotating shaft support 28 is fixed on the bottom surface of the detection platform 1, two driving wheels 24 are respectively arranged at two ends of the rotating shaft 23, the rotating shaft 23 drives the two driving wheels 24 to rotate under the rotation of the rotating motor 20, two driven wheels 25 capable of rotating are further arranged on the bottom surface of the detection platform 1, the arrangement mode can be that the two driven wheels 25 are respectively rotatably connected to the bottom of the detection platform 1, or can be rotatably connected to the bottom surface of the detection platform 1 through a, in this embodiment, it is not specifically limited that, under the limiting action of the first rail 26 and the second rail 27, the detection platform 1 moves back and forth along the first rail 26, it should be noted that, the first rail 26 and the second rail 27 limit the driving wheel 24 and the driven wheel 25 to only roll on the rails, please refer to fig. 8, the specific structure may be that the first rail 26 is set as a side rail, the driving wheel 24 and the driven wheel 25 are clamped in the first rail 26, and the driving wheel 24 and the driven wheel 25 are limited to move in a direction perpendicular to the horizontal plane, so as to ensure that the detection platform 1 is not pulled up during the pulling test, and similarly, the second rail 27 may be set in the same manner as the second rail 27.
In a specific embodiment, referring to fig. 4, a sliding block 29 is disposed at the top of the tension sensor 7, a sliding groove 30 adapted to the sliding block 29 is disposed inside the cross beam 4, the sliding block 29 is slidably connected to the sliding groove 30, the tension sensor 7 is in threaded connection with the sliding block 29, and the tension sensor 7 is in threaded connection with the drawing head 8. It should be noted that, in this embodiment, two or three first testing assemblies may be provided, and when two first testing assemblies are provided, two sets of corresponding sliding blocks 29 may be provided, a sliding groove 30 is formed at the bottom of the cross beam 4, and the two sliding blocks 29 with the tension sensors 7 are placed in the same sliding groove 30, and in the actual use process, which tension sensor 7 needs to be adopted, that is, which pressure sensor needs to be moved; when three first testing assemblies are arranged, two sliding grooves 30 can be formed in the bottom of the cross beam 4, one sliding groove 30 is provided with two sliding blocks 29, and the other sliding groove 30 is provided with one sliding block 29; it should be noted that the thickness of the "S" type tension sensor 7 used in this embodiment is small, and in the use process, the "S" type tension sensor 7 may be rotated to a position where the occupied space is small, that is, a position where the thickness direction of the "S" type tension sensor 7 is parallel to the length direction of the cross beam 4, and through actual inspection, at this time, the thickness of the "S" type tension sensor 7 does not affect the detection of other "S" type sensors; it should be noted that, in this embodiment, when two "S" type sensors are provided, the detection ranges of the two "S" type sensors are different, and in the actual drawing test process, the sensor is easily damaged due to too small range selection, the accuracy is poor due to too large range, and the data discreteness is large; the actual tension required by the measured unit 9 is optimally selected to fall between 20% and 80% of the measuring range of the sensor, and the accuracy of measured data can be effectively improved by selecting a proper measuring range; for example, when a user detects the bonding strength of the insulation board substrate, it can be known from the common knowledge in the art that the bonding strength between mortar and the insulation board in an external wall insulation system is about 0.1-0.2MPa, the bonding strength between mortar and a cement substrate is 0.4-0.6MPa, the bonding strength between waterproof mortar and a cement substrate in JC/T984 is required to be 0.8-1.2MPa, and the like, and different standards are added to define different bonding areas (40 × 40mm, 50 × 50mm, 100 × 100mm, 45 × 95mm) between the tested unit and the substrate. In conclusion, in the scheme of the embodiment, the tension sensors 7 and 3 with different measuring ranges are arranged, the adaptive measuring ranges can be selected according to the tension of different base materials, the accuracy and the effectiveness of detection data are improved, and the applicability of the test equipment to the detection of the tested units 9 of different base materials and other building materials is greatly improved.
In one embodiment, referring to fig. 4, a connecting groove 31 is disposed at the top of the drawing block 5, and the drawing head 8 is clamped in the connecting groove 31.
In a specific embodiment, an external thread is arranged on the outer side wall of the drawing head 8, an internal thread is arranged on the top of the drawing block 5, the external thread is matched with the internal thread, and the drawing head 8 is in threaded connection with the drawing block 5.
In a specific embodiment, please refer to fig. 4, the apparatus further includes a connecting member 32, one end of the connecting member 32 is connected to the tension sensor 7 by a screw thread, and the other end is connected to the drawing head 8 by a snap-fit connection.
In practical application, a connecting piece 32 is arranged between the tension sensor 7 and the drawing head 8, the connecting piece 32 is connected below the tension sensor 7, and the tension sensor 7 and the drawing head 8 do not need to be screwed for many times in the using process, so that the damage probability of the tension sensor 7 is reduced; when the pulling head 8 is in threaded connection with the pulling block 5, the pulling head 8 needs to be repeatedly screwed in the connection process, and then the pulling head 8 and the tension sensor 7 need to be repeatedly screwed, after the pulling head 8 and the pulling block 5 are screwed down, the connecting thread between the pulling head 8 and the tension sensor 7 needs to be loosened a little, so that the connecting piece 32 is arranged, the thread between the pulling head 8 and the tension sensor 7 does not need to be repeatedly screwed, and the service life of the tension sensor 7 is prolonged.
In one embodiment, the test device further comprises a second test component; the second testing assembly comprises a spoke sensor 33, a first clamp 34 and a second clamp 35; the spoke type sensor 33 is fixedly arranged at the top of the fixed frame 2, and the first clamp 34 is detachably connected with the spoke type sensor 33; the second clamp 35 is disposed on top of the beam 4, and the second clamp 35 is located directly below the first clamp 34.
Specifically, the second test component is arranged for detecting the endurance effect of the net-shaped structure, in the using process, one side of the net-shaped structure is fixed at the first clamp 34, the side opposite to the side is fixed at the second clamp 35, the controller 6 controls the cross beam 4 to move downwards, the net-shaped structure is stressed, and at the moment, the spoke-type sensor 33 arranged at the top of the fixing frame 2 is stressed, so that the maximum bearing force of the net-shaped structure is detected; it should be noted that, the first fixture 34, the second fixture 35 and the spoke sensor 33 are provided in a set, in this embodiment, a plurality of sets of the second testing assemblies may be provided, the ranges of the spoke sensors 33 in none of the sets of the testing assemblies are all different, and those skilled in the art can select the ranges according to actual situations, and combine conventional knowledge, for example, when the mesh structure to be detected is a fiber mesh structure, the spoke sensors 33 with the ranges adapted to the mesh structure may be selected, so as to improve the accuracy of the detection data of the spoke sensors 33.
As a further optimization, please refer to fig. 10, when a plurality of sets of the second testing assemblies are arranged, the first setting may be that two spoke sensors 33 with different measuring ranges are arranged on the top of the fixing frame, correspondingly, two second clamps 35 are arranged on the top of the cross beam, and the spoke sensors 33 correspond to the second clamps 35 one by one; the clamp is loaded on the cross beam and can be arranged in the middle of the cross beam, the sliding groove is formed in the top of the fixing frame, the sliding block is arranged in the sliding groove, the spoke type sensor 33 is in threaded connection with the sliding block, the sliding block moves in the sliding groove along the length direction of the cross beam, in practical application, two sliding blocks can be arranged, each sliding block is in threaded connection with one spoke type sensor 33, the measuring ranges of the two spoke type sensors 33 are different, and the setting principle is the same as that of the tension sensor.
In one embodiment, at least two second test assemblies are included, with the spoke sensors 33 in any two second test assemblies having different span.
In this embodiment, another implementation manner of the second testing assembly is further provided, in which a compression-resistant assembly is disposed at the top of the beam, and the compression-resistant assembly includes a compression-resistant clamp, a pressure plate and a pressure sensor; the compression-resistant clamp is arranged at the top of the cross beam, and the compression plate and the pressure sensor which are matched with the compression-resistant clamp are arranged below the top of the fixing frame, so that the compression-resistant test of the cement mortar series products can be completed; certainly, a plurality of sets of the compression-resistant clamp assemblies can be arranged, the measuring ranges of the pressure sensors in each set of the assemblies are different, and the accuracy of the compression-resistant test result can be improved; of course, those skilled in the art should understand that the above-mentioned compression-resisting assembly is replaced by an anti-bending assembly, that is, the universal testing machine provided in this embodiment can be used for performing an anti-bending test, it should be noted that, the universal testing machine provided in this embodiment is used for replacing the clamps with different functions to achieve different detection effects, specifically, based on the area between the cross beam and the top of the fixing frame, the detection tests on different items are achieved in this area by using the existing clamping mold and the existing mold mounting method, and all belong to the protection scope of this application.
In one embodiment, the device comprises at least two first testing assemblies, and each first testing assembly is respectively connected with the cross beam 4 in a sliding manner; the span is different between the tension sensors 7 in any two first test assemblies.
The embodiment of the invention provides a universal testing machine, which comprises: the device comprises a detection platform 1, a fixed frame 2, a lifting mechanism, a moving mechanism, a first test component, a base material test block 3, a cross beam 4, a drawing block 5 and a controller 6; the moving mechanism is fixedly arranged on the fixed frame 2, the moving mechanism is connected with the detection platform 1 in a driving mode, and the moving mechanism drives the detection platform 1 to move back and forth; the detection surface of the detection platform 1 is parallel to the horizontal plane; the lifting mechanism is fixedly arranged in the fixed frame 2 and drives the connecting beam 4; the first testing assembly is arranged on the cross beam 4; the first testing component is positioned above the detection platform 1, and the lifting mechanism drives the beam 4 to move up and down along the direction vertical to the horizontal plane; the first testing component comprises a tension sensor 7 and a drawing head 8; the tension sensor 7 is connected with the cross beam 4 in a sliding mode, the drawing head 8 is arranged at the bottom of the tension sensor 7, one end of the drawing head 8 is movably connected with the tension sensor 7, and the other end of the drawing head 8 is detachably connected with the drawing block 5; the base material test block 3 is detachably connected with the detection platform 1, and the base material test block 3 comprises a plurality of units to be detected 9; the units 9 to be tested are distributed on the same surface of the base material test block 3; the size of the bottom surface of the drawing block 5 is matched with the size of the unit to be measured 9; the controller 6 is connected with the lifting mechanism, the moving mechanism and the tension sensor 7 in a control mode.
In practical application, a substrate test block 3 with a predetermined size is selected, a predetermined number of units to be tested 9 are arranged on the substrate test block 3, a drawing block 5 is adhered to cement mortar in the units to be tested 9 in a predetermined adhesion mode, a controller 6 controls a lifting mechanism to work, the lifting mechanism drives a beam 4 to move up and down until the beam moves to a position where a drawing head 8 and the drawing block 5 can be connected, a user selects a predetermined sample to be tested, the controller 6 controls a moving mechanism to drive a detection platform 1 to move, the predetermined drawing block 5 and the drawing head 8 are located on the same vertical plane, the user manually slides a first test component, the first test component moves to a position right above the predetermined drawing block 5 and connects the drawing head 8 and the drawing block 5, then the controller 6 controls the lifting mechanism to move upwards, and the beam 4 moves upwards along with the lifting mechanism, at this moment, the drawing head 8 draws the sample to be measured, the tension sensor 7 is stressed and outputs a tension value until the drawing head 8 separates the sample to be measured from the substrate test block 3, the tension value of the tension sensor 7 in the drawing process is obtained, and then the drawing test is completed. By adopting the universal testing machine provided by the embodiment of the invention, only one substrate test block 3 needs to be manufactured, a plurality of groups of tested units 9 can be manufactured on the surface of one substrate test block 3, the uniformity of the surface flatness and the strength of the substrate test block 3 is good, the accuracy and the effectiveness of detection data are greatly improved, the test is carried out once until a plurality of tested units 9 are tested, the detection efficiency of the tested units 9 is greatly improved, and the preparation time of the substrate test block 3 required by detection is greatly shortened.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. A universal testing machine, comprising: the device comprises a detection platform, a fixed frame, a lifting mechanism, a moving mechanism, a first test component, a base material test block, a cross beam, a drawing block and a controller;
the moving mechanism is fixedly arranged on the fixed frame, is in driving connection with the detection platform and drives the detection platform to move back and forth; the detection surface of the detection platform is parallel to the horizontal plane; the lifting mechanism is fixedly arranged in the fixed frame and is in driving connection with the cross beam; the first testing assembly is arranged on the cross beam; the first testing assembly is positioned above the detection platform, and the lifting mechanism drives the cross beam to move up and down along the direction vertical to the horizontal plane;
the first testing assembly comprises a tension sensor and a drawing head; the tension sensor is connected with the cross beam in a sliding mode, the drawing head is arranged at the bottom of the tension sensor, one end of the drawing head is movably connected with the tension sensor, and the other end of the drawing head is detachably connected with the drawing block;
the base material test block is detachably connected with the detection platform and comprises a plurality of units to be detected; the tested units are distributed on the same surface of the base material test block; the size of the bottom surface of the drawing block is matched with the size of the unit to be tested;
the controller is connected with the lifting mechanism, the moving mechanism and the tension sensor in a control mode.
2. The universal testing machine as claimed in claim 1, wherein the lifting mechanism comprises a driving motor, a first lead screw, a second lead screw, a driving gear, a first gear, a second gear, a bearing support, a first bearing support, a second bearing support;
the driving gear is arranged at the working end of the driving motor, the driving gear is respectively in driving connection with the first gear and the second gear, the first gear is fixed on the first lead screw, and the axis of the first gear is collinear with the axis of the first lead screw; the second gear is fixed on the second lead screw, and the axis of the second gear is collinear with the axis of the second lead screw; the axis of the first lead screw is parallel to the axis of the second lead screw, and the axis of the first lead screw is perpendicular to the detection surface of the detection platform; the bearing support is arranged at the bottom of the fixing frame, and two bearings which are respectively matched with the bottom of the first lead screw and the bottom of the second lead screw are fixedly arranged on the bearing support; the first bearing support is arranged at the top of the first lead screw, and a bearing is arranged at the joint of the first lead screw and the first bearing support; the second bearing support is arranged at the top of the second lead screw, and a bearing is arranged at the joint of the second lead screw and the second bearing support;
one end of the cross beam is in threaded connection with the first lead screw, the other end of the cross beam is in threaded connection with the second lead screw, and in the process that the first lead screw and the second lead screw rotate simultaneously, the cross beam moves up and down in the direction perpendicular to the horizontal plane.
3. The universal testing machine as claimed in claim 1, wherein the moving mechanism comprises a rotating motor, a driving gear, a driven gear, a rotating shaft, two driving wheels, two driven wheels, a first track, and a second track; the first track and the second track are laid between two side walls of the fixed frame, the first track and the second track are arranged in parallel, the rotating motor is fixed at the bottom of the detection platform, the driving gear is arranged at the working end of the rotating motor, the driving gear is meshed with the driven gear, the driven gear is fixed on the rotating shaft, the axis of the rotating shaft is collinear with the axis of the driven gear, one end of the rotating shaft is fixedly connected with one driving wheel, the other end of the rotating shaft is fixedly connected with the other driving wheel, a rotating shaft support is rotatably connected with the rotating shaft, and the rotating shaft support is fixedly arranged at the bottom of the detection platform; the two driven wheels are respectively and rotatably connected to the bottom of the detection platform, and the detection platform moves back and forth under the driving action of the rotating motor and the limitation of the two driving wheels and the two driven wheels on the first track and the second track; the first rail and the second rail limit the rotating shaft to move along the direction vertical to the horizontal plane.
4. The universal testing machine as claimed in claim 1, wherein a slide block is disposed on the top of the tension sensor, a sliding groove adapted to the slide block is disposed in the beam, the slide block is slidably connected to the sliding groove, the tension sensor is in threaded connection with the slide block, and the tension sensor is in threaded connection with the drawing head.
5. The universal testing machine as claimed in claim 1, wherein a connecting groove is provided at the top of the drawing block, and the drawing head is snapped into the connecting groove.
6. The universal testing machine as claimed in claim 1, wherein an external thread is provided on the outer side wall of the drawing head, an internal thread is provided on the top of the drawing block, the external thread is adapted to the internal thread, and the drawing head is in threaded connection with the drawing block.
7. The universal testing machine as claimed in claim 1, further comprising a connecting member, wherein one end of the connecting member is connected with the tension sensor in a threaded manner, and the other end of the connecting member is connected with the drawing head in a clamping manner.
8. The universal testing machine of claim 1, further comprising a second test assembly; the second testing component comprises a spoke type sensor, a first clamp and a second clamp; the spoke type sensor is fixedly arranged at the top of the fixing frame, and the first clamp is detachably connected with the spoke type sensor; the second clamp is arranged at the top of the cross beam and is positioned under the first clamp.
9. The universal tester of claim 8, comprising at least two second test assemblies, wherein the spoke sensors in any two second test assemblies have different ranges.
10. The universal testing machine as claimed in claim 1, characterized by comprising at least two first testing assemblies, each of which is slidably connected with the cross beam; the span is different between the tension sensors in any two first test assemblies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010785323.1A CN111829882A (en) | 2020-08-06 | 2020-08-06 | Universal testing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010785323.1A CN111829882A (en) | 2020-08-06 | 2020-08-06 | Universal testing machine |
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| CN111829882A true CN111829882A (en) | 2020-10-27 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112945746A (en) * | 2021-02-02 | 2021-06-11 | 北京精诚恒通工程技术检测有限公司 | Universal testing machine free of replacing clamp |
| CN112985974A (en) * | 2021-02-04 | 2021-06-18 | 深圳市金致卓科技有限公司 | Be used for PCB board pin welding to draw testing arrangement |
| CN113006168A (en) * | 2021-03-26 | 2021-06-22 | 北京市政路桥股份有限公司 | Construction method stake shaped steel draws and rubs and hinders standardized testing arrangement convenient to settle |
| CN113219057A (en) * | 2021-05-12 | 2021-08-06 | 铁科检测有限公司 | Automatic detection device for filling layer of high-speed railway track slab |
| CN113686682A (en) * | 2021-09-14 | 2021-11-23 | 宁波勤邦新材料科技有限公司 | Online detection device for base film of solar backboard and working method of online detection device |
| CN113740156A (en) * | 2021-08-23 | 2021-12-03 | 科大讯飞股份有限公司 | Drawing test fixture and method |
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2020
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112945746A (en) * | 2021-02-02 | 2021-06-11 | 北京精诚恒通工程技术检测有限公司 | Universal testing machine free of replacing clamp |
| CN112985974A (en) * | 2021-02-04 | 2021-06-18 | 深圳市金致卓科技有限公司 | Be used for PCB board pin welding to draw testing arrangement |
| CN113006168A (en) * | 2021-03-26 | 2021-06-22 | 北京市政路桥股份有限公司 | Construction method stake shaped steel draws and rubs and hinders standardized testing arrangement convenient to settle |
| CN113219057A (en) * | 2021-05-12 | 2021-08-06 | 铁科检测有限公司 | Automatic detection device for filling layer of high-speed railway track slab |
| CN113740156A (en) * | 2021-08-23 | 2021-12-03 | 科大讯飞股份有限公司 | Drawing test fixture and method |
| CN113740156B (en) * | 2021-08-23 | 2024-02-13 | 科大讯飞股份有限公司 | Drawing test fixture and method |
| CN113686682A (en) * | 2021-09-14 | 2021-11-23 | 宁波勤邦新材料科技有限公司 | Online detection device for base film of solar backboard and working method of online detection device |
| CN113686682B (en) * | 2021-09-14 | 2024-05-28 | 宁波勤邦新材料科技股份有限公司 | Online detection device for solar backboard base film and working method thereof |
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