CN111504794A - Fabric bursting strength appearance - Google Patents
Fabric bursting strength appearance Download PDFInfo
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- CN111504794A CN111504794A CN202010335993.3A CN202010335993A CN111504794A CN 111504794 A CN111504794 A CN 111504794A CN 202010335993 A CN202010335993 A CN 202010335993A CN 111504794 A CN111504794 A CN 111504794A
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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
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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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
- 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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- 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
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a fabric bursting strength instrument, which comprises a workbench, a cylinder, a compression ring, an elastic membrane, a hydraulic device and a pressure detection device, wherein the workbench is provided with a plurality of cylinders; the end part of the piston rod of the air cylinder horizontally faces the hydraulic device, the end part of the piston rod of the air cylinder is fixedly provided with a transparent cover, the opening of the transparent cover faces the hydraulic device, and the pressing ring is fixed with the opening edge of the transparent cover; a hydraulic box is fixed on the workbench, a top pressing groove communicated with the interior of the hydraulic box is formed in the side wall of the hydraulic box, the elastic membrane is vertically fixed in the top pressing groove and seals the hydraulic box, and the surface of one side, far away from the interior of the hydraulic box, of the elastic membrane is flush with the outer side wall, provided with the top pressing groove, of the hydraulic box; the hydraulic device and the pressure detection device are both arranged in the hydraulic tank; still be equipped with air exhaust device on the workstation, air exhaust device is including setting up vacuum pump and the connecting pipe on the workstation, and connecting pipe one end is fixed and the intercommunication with the vacuum pump entry, and the other end is fixed with the translucent cover outer wall and communicates with the translucent cover is inside. The invention has the effect of improving the detection precision of the bursting strength of the fabric.
Description
Technical Field
The invention relates to the technical field of detection, in particular to a fabric bursting strength instrument.
Background
The phenomenon that the fabric bulges, expands and then breaks under the load action vertical to the plane of the fabric is called bursting, and the bursting strength of the fabric is an important mechanical index of the fabric. The experimental method for detecting the bursting strength of the fabric mainly comprises a pin bursting method and an elastic diaphragm method, wherein the elastic diaphragm method mainly adopts a fabric bursting strength instrument, as shown in fig. 1, the conventional fabric bursting strength instrument comprises a workbench B1, a machine shell B2 arranged on the workbench B1, a cylinder B3 fixed on the machine shell B2, a press ring B4 fixed on the end part of a piston rod of the cylinder B3, an elastic diaphragm B5 arranged on the workbench B1 and positioned on the lower side of the press ring B4, a hydraulic device B6 arranged in the workbench B1 and used for constantly applying liquid pressure under the elastic diaphragm B5, and a pressure detection device B7 arranged in the hydraulic device B6 and used for detecting the hydraulic pressure applied to the elastic diaphragm B5. When the bursting strength of the fabric is detected, the fabric is arranged on the elastic film B5, then the air cylinder B3 is started, the press ring B4 is driven to move downwards and press the fabric tightly, the fabric is attached to the workbench B1 and the elastic film B5, then the hydraulic device B6 is started, the elastic film B5 is enabled to be constantly bulged upwards, and therefore the surface of the fabric is bulged upwards until the fabric is burst. In the above process, the pressure detecting device B7 detects the pressure exerted on the elastic membrane B5 by the hydraulic device B6 when the fabric is burst, thereby detecting the burst strength of the fabric.
The above prior art solutions have the following drawbacks: in the detection process, the surface of the fabric far away from the elastic membrane is still acted by air pressure, so that partial action of the fabric on the elastic membrane is counteracted, the difference between the detection data and the real bursting strength of the fabric is larger, and the test detection data are inaccurate.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a fabric bursting strength instrument which has the effect of improving the detection precision of the fabric bursting strength.
The above object of the present invention is achieved by the following technical solutions:
a fabric bursting strength instrument comprises a workbench, a cylinder fixed on the workbench, a press ring fixed on the end part of a piston rod of the cylinder, an elastic membrane arranged on the workbench, a hydraulic device arranged on the workbench and used for applying liquid pressure on one side of the elastic membrane, and a pressure detection device arranged on the workbench and used for detecting the hydraulic pressure applied to the elastic membrane; the end part of the piston rod of the air cylinder horizontally faces the hydraulic device, a transparent cover is fixed at the end part of the piston rod of the air cylinder, an opening of the transparent cover faces the hydraulic device, and the pressing ring is fixed with an opening edge of the transparent cover; a hydraulic tank is fixed on the workbench, a jacking groove communicated with the interior of the hydraulic tank is formed in the side wall, close to the air cylinder, of the hydraulic tank, the elastic membrane is vertically fixed in the jacking groove and seals the hydraulic tank, and the surface of one side, far away from the interior of the hydraulic tank, of the elastic membrane is flush with the outer side wall, provided with the jacking groove, of the hydraulic tank; the hydraulic device and the pressure detection device are both arranged in the hydraulic tank; still be equipped with air exhaust device on the workstation, air exhaust device including set up in vacuum pump and connecting pipe on the workstation, connecting pipe one end with the vacuum pump entry is fixed and the intercommunication, the other end with the translucent cover outer wall is fixed and with the inside intercommunication of translucent cover.
By adopting the technical scheme, when the bursting strength of the fabric is detected, an operator pastes the fabric on the side wall of the hydraulic tank, so that the fabric covers the elastic membrane and is adhered to the elastic membrane, the air cylinder is started at the moment to drive the transparent cover and the pressing ring to move towards the hydraulic tank until the pressing ring presses the fabric and abuts against the elastic membrane, the vacuum pump is started to extract air in the transparent cover until the interior of the transparent cover is in a vacuum environment, then the hydraulic device applies hydraulic pressure to the elastic membrane in the hydraulic tank, so that the elastic membrane props against the fabric and bulges towards the interior of the transparent cover until the fabric bursts, and meanwhile, the pressure detection device detects the hydraulic value of the elastic membrane, so that the pressure value when the fabric bursts is measured, namely the bursting strength of the fabric; in the process, one side of the fabric, which is far away from the elastic membrane, is in a vacuum environment when the fabric is burst, so that the side of the fabric, which is far away from the elastic membrane, is not acted by external force, and the jacking action of the elastic membrane, which is borne by the fabric when the fabric is burst, is not counteracted by the external force, thereby improving the detection precision of burst strength of the fabric; in addition, the fabric is vertically arranged during detection, so that the influence of the self gravity of the fabric on the detection value of the bursting strength of the fabric is avoided, and the accuracy of detecting the bursting strength of the fabric is improved.
The present invention in a preferred example may be further configured to: the connecting pipe is a stainless steel round pipe, and the workbench is provided with an installation plate in sliding connection with the workbench; the vacuum pump with mounting panel upper surface is fixed, just the mounting panel for the moving direction of workstation with the moving direction of cylinder piston rod is unanimous.
Through adopting above-mentioned technical scheme, the connecting pipe adopts the stainless steel pipe, and the laminating of connecting pipe inner wall and jam when preventing that the vacuum pump from extracting air in the translucent cover, and when the translucent cover was driven by the cylinder, the connecting pipe removed thereupon, and drive vacuum pump and mounting panel slide to make the vacuum pump be connected with it all the time when the translucent cover removed.
The present invention in a preferred example may be further configured to: an inflating cavity surrounding the opening of the transparent cover is formed in the frame of the pressing ring, and a rubber sheet ring is fixed on the end face of the pressing ring attached to the fabric; the end face of the compression ring, which is connected with the rubber sheet ring, is provided with a circular seam communicated with the inflating cavity, the circular seam is arranged around the opening of the transparent cover, and the rubber sheet ring covers the opening, close to the outside of the compression ring, of the circular seam; and the compression ring is also provided with a vent pipe, one end of the vent pipe is communicated with the inside of the inflating cavity, and the other end of the vent pipe is communicated with the outlet of the vacuum pump.
Through adopting above-mentioned technical scheme, when the vacuum pump started, the air in the vacuum pump extraction foul smell translucent cover let in the intracavity of inflating through the breather pipe, then the air of the intracavity of inflating withstands the rubber sheet circle through the circumferential weld to make the surface of rubber sheet circle contact circumferential weld bulge towards the hydraulic pressure case, make the rubber sheet circle further support tightly with the hydraulic pressure case lateral wall, further strengthened the leakproofness between clamping ring and the hydraulic pressure case lateral wall.
The present invention in a preferred example may be further configured to: the air extractor also comprises a transfer case fixed on the mounting plate, a constant pressure plug made of rubber is embedded and fixed on the side wall of the transfer case, and a pinhole communicated with the inside and the outside of the transfer case is arranged on the constant pressure plug; two semicircular blocks which are integrally formed with the constant pressure plug are fixed in the needle hole, the arc-shaped surfaces of the semicircular blocks are attached and fixed with the inner wall of the needle hole, and the rectangular surfaces of the two semicircular blocks are attached and abutted with each other; one end of the vent pipe, which is far away from the compression ring, is communicated with the transit box, and a communicating pipe is connected between the transit box and the outlet of the vacuum pump.
By adopting the technical scheme, when the vacuum pump is started, the vacuum pump pumps air in the transparent cover into the transfer box through the communicating pipe, then high-pressure air in the transfer box is pumped into the inflating cavity through the vent pipe, when the air pressure in the inflating cavity is too high, the air pressure in the transfer box is consistent with the air pressure in the inflating cavity, and at the moment, the high-pressure air in the transfer box enters the needle hole and presses the two semicircular blocks, so that a gap is generated between the surfaces of the two semicircular blocks, the high-pressure air in the transfer box flows out of the transfer box through the needle hole, a part of air pressure in the transfer box and the inflating cavity is released, the air pressure in the inflating cavity is prevented from being too high, the effect of limiting the upper limit of the air pressure in the inflating cavity is achieved, and the phenomenon that the rubber ring is deformed too much to affect the fitting of the rubber ring and the outer side wall of the hydraulic box is; in addition, the arrangement of the transfer box provides enough accommodating space for the air quantity in the transparent cover.
The present invention in a preferred example may be further configured to: an elastic strip is arranged in the constant-pressure plug, one end of the elastic strip penetrates through the inner wall of the needle hole and penetrates into the semicircular block, and the other end of the elastic strip is arranged in the constant-pressure plug and fixed with the constant-pressure plug; the number of the elastic strips is two, and the two elastic strips are respectively connected with the two semicircular blocks.
Through adopting above-mentioned technical scheme, when the transfer incasement is in the high pressure, the high-pressure air oppression semicircle piece of transfer incasement, make the elastic strip bending deformation in the semicircle piece, thereby make and produce the gap between the semicircle piece, and when the atmospheric pressure reduction of transfer incasement answers a definite value, the elastic strip resumes deformation, make two semicircle pieces laminate again, prevent that the air of transfer incasement from continuing to reveal, thereby the atmospheric pressure of inflating the intracavity has been maintained, make the rubber sheet circle and pneumatic cylinder lateral wall paste tightly, guarantee the leakproofness.
The present invention in a preferred example may be further configured to: the hydraulic device comprises a hydraulic cylinder fixed in the hydraulic tank and a piston plate fixed on the end part of a piston rod of the hydraulic cylinder, the piston plate and the hydraulic tank are movably sealed and matched in a sliding manner, and the piston plate is vertical to the inner wall of the elastic membrane, and hydraulic oil is filled between the piston plate and the inner side wall of the hydraulic tank, which is provided with a jacking groove; the pressure detection device comprises a detection pipe vertically arranged on the hydraulic box and a pressure sensor fixedly arranged at the upper end of the detection pipe, the lower end of the detection pipe is fixed on the upper surface of the hydraulic box and communicated with the interior of the hydraulic box, and the detection pipe is filled with hydraulic oil in the hydraulic box.
Through adopting above-mentioned technical scheme, when the pneumatic cylinder started, the piston plate of the piston rod drive hydraulic pressure incasement of pneumatic cylinder removed, compressed the hydraulic oil between piston plate and the elastic membrane, thereby make the elastic membrane be close to the surface in the hydraulic pressure incasement and receive the high pressure effect and bulge, thereby play the bulging effect to the fabric, meanwhile, the hydraulic oil of hydraulic pressure incasement gets into the detecting tube, thereby make pressure sensor detect the hydraulic pressure in the detecting tube, can calculate the hydraulic pressure in the hydraulic pressure incasement and the hydraulic pressure value that the complex film received.
The present invention in a preferred example may be further configured to: the measuring device comprises a telescopic long box which horizontally penetrates through the transparent cover and is fixed with the transparent cover, a Z-shaped rod arranged in the transparent cover and a top plate which is arranged in the transparent cover and is attached to the surface, away from the elastic film, of the fabric, and the axis of the pressing ring penetrates through the top plate; a piston block is slidably mounted in the telescopic long box, one end of the Z-shaped rod is fixed with the surface of the top plate far away from the fabric, the other end of the Z-shaped rod penetrates through the end face of one end of the telescopic long box, which is positioned in the transparent cover, and is fixed with the piston block, and the Z-shaped rod and the telescopic long box are movably sealed; the telescopic long box is filled with stable water, the length direction of the telescopic long box is parallel to the driving direction of the piston rod of the air cylinder, and the sliding direction of the piston block relative to the telescopic long box is consistent with the length direction of the telescopic long box; and one end of the Z-shaped rod penetrating into the telescopic long box is provided with scales used for measuring the moving distance of the Z-shaped rod.
Through adopting above-mentioned technical scheme, when the complex film is bloated, with the fabric of complex film laminating swell, withstand the top piece and promote the top piece and remove towards the cylinder direction, thereby make Z shape pole drive piston block remove, at this moment, stable water in the flexible long box has the damping effect to the piston block, prevent that the piston block from removing because inertia, and when the fabric bursts, the top piece does not receive the exogenic action, the piston block stops to remove, the displacement distance of Z shape pole can be taken notes to the scale on the Z shape pole this moment, be the bursting distance of fabric promptly.
In summary, the invention includes at least one of the following beneficial technical effects:
when the bursting strength of the fabric is detected, an operator pastes the fabric on the side wall of the hydraulic tank to enable the fabric to cover the elastic membrane and be adhered to the elastic membrane, the air cylinder is started at the moment to drive the transparent cover and the pressing ring to move towards the hydraulic tank until the pressing ring presses the fabric and abuts against the elastic membrane, then the vacuum pump is started to extract air in the transparent cover until the interior of the transparent cover is in a vacuum environment, then the hydraulic device applies hydraulic pressure to the elastic membrane in the hydraulic tank to enable the elastic membrane to prop the fabric to bulge towards the interior of the transparent cover until the fabric bursts, and meanwhile, the pressure detection device detects the hydraulic value of the elastic membrane, so that the pressure value when the fabric bursts is measured, and the pressure value is the bursting strength of the fabric; in the process, one side of the fabric, which is far away from the elastic membrane, is in a vacuum environment when the fabric is burst, so that the side of the fabric, which is far away from the elastic membrane, is not acted by external force, and the jacking action of the elastic membrane, which is borne by the fabric when the fabric is burst, is not counteracted by the external force, thereby improving the detection precision of burst strength of the fabric;
when the vacuum pump is started, the vacuum pump extracts air in the odor transparent cover and leads the air into the inflating cavity through the vent pipe, and then the air in the inflating cavity props against the rubber sheet ring through the annular seam, so that the surface of the rubber sheet ring, which is in contact with the annular seam, bulges towards the hydraulic tank, the rubber sheet ring is further propped against the outer side wall of the hydraulic tank, and the sealing property between the compression ring and the outer side wall of the hydraulic tank is further enhanced;
when the vacuum pump starts, the air in the vacuum pump extraction translucent cover is gone into the transfer case through communicating pipe pump, then the high-pressure air in the transfer case goes into the intracavity of inflating through the breather pipe pump, and when the atmospheric pressure of the intracavity of inflating was too high, the atmospheric pressure in the transfer case is unanimous with the atmospheric pressure of the intracavity of inflating, the high-pressure air in the transfer case got into the pinhole and oppresses two semicircle pieces this moment, thereby make the surface that two semicircle pieces laminated each other produce the clearance, thereby make the high-pressure air in the transfer case flow out the transfer case through the pinhole, some atmospheric pressure in transfer case and the intracavity of inflating has been released, prevent to inflate the atmospheric pressure of intracavity too high, the effect of the interior atmospheric pressure upper limit of chamber of inflating of injecing has been injectd, prevent that the deformation of rubber circle piece is too big and influence the laminating of rubber circle and hydraulic tank lateral.
Drawings
Fig. 1 is a schematic structural diagram of a conventional fabric bursting strength instrument.
FIG. 2 is a schematic diagram of the embodiment.
Fig. 3 is an external configuration diagram of the embodiment.
Fig. 4 is an enlarged schematic view at a in fig. 2.
Fig. 5 is a schematic view of the structure of the constant-pressure plug.
Fig. 6 is a schematic structural view of the telescopic long box.
Reference numerals: b1, a workbench; b2, a shell; b3, air cylinder; b4, a pressure ring; b5, an elastic film; b6, a hydraulic device; b7, a pressure detection device; 1. a work table; 11. a fixing plate; 12. a hydraulic tank; 2. a cylinder; 3. a transparent cover; 4. pressing a ring; 41. inflating an air cavity; 42. performing circular sewing; 43. a rubber sheet ring; 5. an elastic film; 6. a hydraulic device; 61. a hydraulic cylinder; 62. a piston plate; 7. a pressure detection device; 71. a detection tube; 72. a pressure sensor; 8. an air extraction device; 81. mounting a plate; 82. a vacuum pump; 83. a transfer box; 831. a constant pressure plug; 832. a pinhole; 833. a semicircular block; 834. an elastic strip; 84. a connecting pipe; 85. a communicating pipe; 86. a breather pipe; 9. a measuring device; 91. a telescopic long box; 911. a piston block; 912. water passing holes; 92. a Z-shaped bar; 93. a topsheet.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 2, the fabric bursting strength instrument disclosed by the invention comprises a workbench 1, a cylinder 2, a transparent cover 3, a compression ring 4, an elastic membrane 5, a hydraulic device 6, a pressure detection device 7, an air extraction device 8 and a measurement device 9. Referring to fig. 3, the worktable 1 is a rectangular table, the length direction of the worktable is horizontal, a fixing plate 11 and a hydraulic tank 12 are arranged on the worktable 1, the fixing plate 11 is rectangular plate-shaped, the fixing plate 11 is vertically arranged, and the bottom surface of the fixing plate 11 is fixed with the upper surface of the worktable 1. The cylinder 2 is disposed on one side of the fixing plate 11 and fixed to a surface of the fixing plate 11, and a piston rod end of the cylinder 2 penetrates the fixing plate 11 and is disposed on the other side of the fixing plate 11. The hydraulic tank 12 is rectangular and is disposed on one side of the fixing plate 11 away from the cylinder 2, the bottom surface of the hydraulic tank 12 is fixed to the upper surface of the worktable 1, and the end of the piston rod of the cylinder 2 faces the hydraulic tank 12. The transparent cover 3 is of a bowl-shaped structure and is made of toughened glass, the transparent cover 3 is arranged between the fixing plate 11 and the hydraulic tank 12, the opening of the transparent cover 3 faces the hydraulic tank 12 downwards, and the center of the outer surface of the transparent cover 3 is fixed with the end part of the piston rod of the air cylinder 2. The press ring 4 is annular, one end face of which is fixed with the opening end face of the transparent cover 3, and the other end face faces the hydraulic tank 12. As shown in fig. 4, an inflating cavity 41 is formed in the frame of the pressing ring 4, the inflating cavity 41 is an annular cavity, the cross section of the inflating cavity 41 is circular, and the inflating cavity 41 is disposed around the annular frame of the pressing ring 4. The end face of the pressing ring 4 close to the hydraulic tank 12 is provided with a circular seam 42, an opening of the circular seam 42 is circular, the circular seam extends around the frame of the pressing ring 4, and the circular seam 42 is communicated with the inner wall of the inflating cavity 41. The surface of the pressing ring 4 provided with the annular seam 42 is fixed with a rubber sheet ring 43, the rubber sheet ring 43 is in a circular ring sheet structure and made of elastic rubber, the rubber sheet ring is attached to the pressing ring 4, and the rubber sheet ring 43 seals the opening of the annular seam 42. The lateral wall that hydraulic pressure case 12 is close to translucent cover 3 has seted up the top indent, and the opening in top indent is circular, its inside wall intercommunication with hydraulic pressure case 12, and the axis in top indent coincides with the axis of clamping ring 4. Elastic membrane 5 is common part among the current fabric bursting strength appearance, and elastic membrane 5 is circular slice, and elastic membrane 5 sets up in the overhead pressing groove, and elastic membrane 5's circular edge is fixed with the arc inner wall in overhead pressing groove, and in addition, elastic membrane 5 keeps away from one side surface in hydraulic tank 12 and sets up the lateral wall in overhead pressing groove with hydraulic tank 12 and flushes.
Referring to fig. 2, the hydraulic device 6 includes a hydraulic cylinder 61 and a piston plate 62, the hydraulic cylinder 61 is disposed in the hydraulic tank 12 and fixed to an inner side wall of the hydraulic tank 12 away from the fixed plate 11, a piston rod of the hydraulic cylinder 61 faces the knock groove, and an axis of the piston rod of the hydraulic cylinder 61 coincides with an axis of the knock groove. The piston plate 62 is rectangular plate-shaped and vertically arranged in the hydraulic tank 12, and the four edges of the piston plate 62 are respectively matched with the four inner side walls of the hydraulic tank 12 parallel to the piston rod of the hydraulic cylinder 61 in a sliding manner and movably sealed, and in addition, the end part of the piston rod of the hydraulic cylinder 61 and the center of the plate surface of the piston plate 62 far away from the top pressing groove are fixed. Furthermore, hydraulic oil is provided in the hydraulic tank 12, and the hydraulic oil fills the space in the hydraulic tank 12, which is located in the piston plate 62 and away from the hydraulic cylinder 61, so that the surface of the elastic membrane 5, which is away from the fabric, is in contact with the hydraulic oil. The pressure detection device 7 comprises a detection pipe 71 and a pressure sensor 72, wherein the detection pipe 71 is in a circular pipe shape, the axis of the detection pipe 71 is vertical, the lower end of the detection pipe 71 penetrates through the upper surface of the hydraulic tank 12 and is communicated with the inner top surface of the hydraulic tank 12, and in addition, hydraulic oil in the hydraulic tank 12 is filled into the detection pipe 71. The pressure sensor 72 is fixedly installed at the upper end of the detection pipe 71 and is used for detecting the hydraulic pressure value of the hydraulic oil in the detection pipe 71. When the hydraulic cylinder 61 is started, the piston rod of the hydraulic cylinder 61 drives the piston plate 62 in the hydraulic tank 12 to move, hydraulic oil between the piston plate 62 and the elastic membrane 5 is compressed, so that the surface of the elastic membrane 5, which is close to the hydraulic tank 12, is bulged under the action of high pressure, so that the fabric is bulged, meanwhile, the hydraulic oil in the hydraulic tank 12 enters the detection pipe 71, so that the pressure sensor 72 detects the hydraulic pressure in the detection pipe 71, and the hydraulic pressure in the hydraulic tank 12 and the hydraulic value borne by the composite membrane can be calculated.
Referring to fig. 3, the air extractor 8 includes a mounting plate 81, a vacuum pump 82, a transfer case 83, a connection pipe 84, a communication pipe 85, and a breather pipe 86. The mounting plate 81 is a rectangular plate horizontally disposed on the table 1, and the bottom surface of the mounting plate 81 is slidably connected to the upper surface of the table 1, and the sliding direction of the mounting plate 81 coincides with the driving direction of the piston rod of the cylinder 2. The vacuum pump 82 is disposed on the mounting plate 81 and fixed to the upper surface of the mounting plate 81. The transfer case 83 is rectangular box-shaped, the transfer case 83 is disposed on the mounting plate 81, and the bottom surface of the transfer case 83 is fixed to the upper surface of the mounting plate 81. The connection pipe 84 is a stainless steel circular pipe, one end of which is fixed to the outer wall of the transparent cover 3 and is communicated with the inside of the transparent cover 3, and the other end of which is fixed to and communicated with the inlet of the vacuum pump 82. The connection pipe 85 is a stainless steel circular pipe, one end of which is fixed to and connected to an outlet of the vacuum pump 82, and the other end of which is fixed to the outer side wall of the transfer box 83 near the vacuum pump 82 and connected to the inside of the transfer box 83. The vent pipe 86 is a flexible pipe, one end of which is fixed to the outer arc surface of the compression ring 4 and communicates with the pumping chamber 41, and the other end of which is fixed to the outer side wall of the transfer case 83 remote from the vacuum pump 82 and communicates with the inside of the transfer case 83. The outer side wall of one end of the transit box 83 is provided with a round hole which penetrates through the side wall of the transit box 83, and a constant-pressure plug 831 is arranged in the round hole as shown in a combined figure 5. The constant pressure plug 831 is in a circular block shape and made of rubber, the cylindrical surface of the constant pressure plug 831 is fixed with the inner wall of the circular hole, and the end surfaces of the two ends of the constant pressure plug 831 are respectively flush with the two sides of the side wall of the transfer case 83. The end face of the constant-pressure plug 831 is provided with a pinhole 832, the opening of the pinhole 832 is circular, the axis of the pinhole 832 is coincident with the axis of the constant-pressure plug 831, and the pinhole 832 penetrates through the constant-pressure plug 831. The inner of the pinhole 832 is provided with a semicircular block 833, the semicircular block 833 is in a semicircular block shape and is made of rubber, the axis of the semicircular block 833 is overlapped with the axis of the pinhole 832, the arc-shaped surface of the semicircular block 833 is fixed with the inner wall of the pinhole 832 and is integrally formed, the number of the semicircular blocks 833 is two, the axes of the two semicircular blocks 833 are overlapped, and the rectangular surfaces of the two semicircular blocks 833 are attached and abutted. An elastic strip 834 is further arranged in the constant-pressure plug 831, the elastic strip 834 is in a rectangular strip shape and is made of a copper sheet, one end of the elastic strip 834 penetrates through the arc-shaped surface of the semicircular block 833 and is fixed with the semicircular block 833, the other end of the elastic strip 834 penetrates through the inner wall of the pinhole 832 and penetrates into the constant-pressure plug 831, and in addition, the elastic strip 834 is fixed with the constant-pressure plug 831. The number of the elastic strips 834 is two, and the two elastic strips 834 are respectively connected with the two semicircular blocks 833.
Referring to fig. 2, the measuring device 9 includes a telescopic long box 91, a Z-shaped rod 92 and a top plate 93, the telescopic long box 91 is a rectangular long box, the length direction of the telescopic long box 91 is horizontal and parallel to the driving direction of the piston rod of the cylinder 2, the telescopic long box 91 penetrates through the transparent cover 3 and is fixed with the transparent cover 3, and the telescopic long box 91 is filled with stable water. Referring to fig. 6, still be equipped with piston block 911 in the flexible long box 91, piston block 911 is rectangular block shape, the surface that its four places meet slides the cooperation with the flexible long box 91 four inner walls that are on a parallel with 2 piston rod drive directions of cylinder respectively, and piston block 911 perpendicular to flexible long box 91 has seted up on the surface and has crossed the water hole 912, crosses the water hole 912 and runs through piston block 911, and crosses the opening of water hole 912 and be circular for piston block 911 can slide in flexible long box 91. The cross-section of Z shape pole 92 is the rectangle, and it is the Z shape, and Z shape pole 92 one end level is run through the one end terminal surface that flexible long box 91 is located the translucent cover 3 and is fixed with piston block 911 in penetrating flexible long box 91, and the Z shape pole 92 other end extends towards clamping ring 4, and Z shape pole 92 and flexible long box 91 activity are sealed to prevent that the stable water in the flexible long box 91 from flowing out. The top sheet 93 is in a circular sheet shape, the axis of the top sheet 93 coincides with the axis of the pressing ring 4, the center of the surface of the top sheet 93, which is far away from the cylinder 2, is fixed with one end of the Z-shaped rod 92, which is far away from the telescopic long box 91, and the top sheet 93 is attached to the surface of the fabric at the initial detection. The horizontal end of the Z-shaped rod 92 close to the long telescopic box 91 is provided with scales for measuring the distance of the Z-shaped rod 92 penetrating into the long telescopic box 91, namely the distance for pushing the top plate 93 to move when the fabric is burst.
The implementation principle of the embodiment is as follows: when the bursting strength of the fabric is detected, an operator pastes the fabric on the side wall of the hydraulic tank 12 to enable the fabric to cover the elastic membrane 5 and be attached to the elastic membrane 5, at the moment, the air cylinder 2 is started to drive the transparent cover 3 and the press ring 4 to move towards the hydraulic tank 12 until the press ring 4 presses the fabric and abuts against the fabric, then the vacuum pump 82 is started, the vacuum pump 82 extracts air in the odor transparent cover 3 and leads the air into the inflating cavity 41 through the vent pipe 86, then the air in the inflating cavity 41 abuts against the rubber sheet ring 43 through the annular seam 42, so that the surface of the rubber sheet ring 43, which is in contact with the annular seam 42, bulges towards the hydraulic tank 12, the rubber sheet ring 43 further abuts against the outer side wall of the hydraulic tank 12, the sealing performance between the press ring 4 and the outer side wall of the hydraulic tank 12 is further enhanced, the inside of the transparent cover 3 is in a vacuum environment, then the hydraulic device 6 applies hydraulic pressure to the elastic, the elastic membrane 5 is enabled to prop against the fabric and bulge towards the inside of the transparent cover 3 until the fabric is burst, and meanwhile, the pressure detection device 7 detects the hydraulic pressure value borne by the elastic membrane 5, so that the pressure value when the fabric is burst is measured, namely the burst strength of the fabric; in the process, one side of the fabric, which is far away from the elastic membrane 5, is in a vacuum environment when the fabric is burst, so that one side of the fabric, which is far away from the elastic membrane 5, is not subjected to the action of external force, the jacking action of the elastic membrane 5, which is received by the fabric when the fabric is burst, is not counteracted by the external force, and the detection precision of the burst strength of the fabric is improved.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (7)
1. The utility model provides a fabric bursting strength appearance, includes workstation (1), is fixed in cylinder (2) on workstation (1), is fixed in clamping ring (4) on cylinder (2) piston rod tip, sets up elasticity membrane (5) on workstation (1), set up in be used for on workstation (1) and apply hydraulic means (6) of fluid pressure and set up pressure measurement device (7) that are used for detecting elasticity membrane (5) hydraulic pressure that receives on workstation (1), its characterized in that: the end part of a piston rod of the cylinder (2) horizontally faces the hydraulic device (6), a transparent cover (3) is fixed at the end part of the piston rod of the cylinder (2), an opening of the transparent cover (3) faces the hydraulic device (6), and the pressing ring (4) is fixed with the opening edge of the transparent cover (3); a hydraulic tank (12) is fixed on the workbench (1), a jacking groove communicated with the interior of the hydraulic tank (12) is formed in the side wall, close to the cylinder (2), of the hydraulic tank (12), the elastic membrane (5) is vertically fixed in the jacking groove and seals the hydraulic tank (12), and the surface, away from the interior of the hydraulic tank (12), of one side of the elastic membrane (5) is flush with the outer side wall, provided with the jacking groove, of the hydraulic tank (12); the hydraulic device (6) and the pressure detection device (7) are both arranged in the hydraulic tank (12); still be equipped with air exhaust device (8) on workstation (1), air exhaust device (8) including set up in vacuum pump (82) and connecting pipe (84) on workstation (1), connecting pipe (84) one end with vacuum pump (82) entry is fixed and the intercommunication, the other end with translucent cover (3) outer wall is fixed and with translucent cover (3) inside intercommunication.
2. The fabric bursting strength instrument of claim 1, wherein: the connecting pipe (84) is a stainless steel round pipe, and a mounting plate (81) which is connected with the workbench (1) in a sliding manner is arranged on the workbench (1); vacuum pump (82) with mounting panel (81) upper surface is fixed, just mounting panel (81) for the moving direction of workstation (1) with the moving direction of cylinder (2) piston rod is unanimous.
3. The fabric bursting strength instrument of claim 2, wherein: an air inflating cavity (41) arranged around the opening of the transparent cover (3) is formed in the frame of the pressing ring (4), and a rubber sheet ring (43) is fixed on the end face of the pressing ring (4) attached to the fabric; the end face of the pressing ring (4) connected with the rubber sheet ring (43) is provided with a circular seam (42) communicated with the inflating cavity (41), the circular seam (42) is arranged around the opening of the transparent cover (3), and the rubber sheet ring (43) covers the opening of the circular seam (42) close to the outside of the pressing ring (4); an air pipe (86) is further arranged on the compression ring (4), one end of the air pipe (86) is communicated with the inside of the inflating cavity (41), and the other end of the air pipe is communicated with an outlet of the vacuum pump (82).
4. The fabric bursting strength instrument of claim 3, wherein: the air extraction device (8) further comprises a transfer box (83) fixed on the mounting plate (81), a constant-pressure plug (831) made of rubber is embedded and fixed on the side wall of the transfer box (83), and a pinhole (832) communicated with the inside and the outside of the transfer box (83) is formed in the constant-pressure plug (831); two semicircular blocks (833) which are integrally formed with the constant-pressure plug (831) are fixed in the pinhole (832), the arc surfaces of the semicircular blocks (833) are attached to and fixed with the inner wall of the pinhole (832), and the rectangular surfaces of the two semicircular blocks (833) are attached to and abutted against each other; one end, far away from the compression ring (4), of the vent pipe (86) is communicated with the transfer box (83), and a communicating pipe (85) is connected between the transfer box (83) and an outlet of the vacuum pump (82).
5. The fabric bursting strength instrument of claim 4, wherein: an elastic strip (834) is arranged in the constant-pressure plug (831), one end of the elastic strip (834) penetrates through the inner wall of the pinhole (832) and penetrates into the semicircular block (833), and the other end of the elastic strip (834) is arranged in the constant-pressure plug (831) and is fixed with the constant-pressure plug; the number of the elastic strips (834) is two, and the two elastic strips (834) are respectively connected with the two semicircular blocks (833).
6. The fabric bursting strength instrument of claim 5, wherein: the hydraulic device (6) comprises a hydraulic cylinder (61) fixed in the hydraulic tank (12) and a piston plate (62) fixed at the end part of a piston rod of the hydraulic cylinder (61), the piston plate (62) and the hydraulic tank (12) are movably sealed and matched in a sliding manner in a way of being vertical to the inner wall of the elastic membrane (5), and hydraulic oil is filled between the piston plate (62) and the inner side wall of the hydraulic tank (12) provided with a top pressure groove; pressure measurement (7) including vertical set up in detection tube (71) and fixed mounting on hydraulic tank (12) in pressure sensor (72) of detection tube (71) upper end, detection tube (71) lower extreme with hydraulic tank (12) upper surface is fixed and with the inside intercommunication of hydraulic tank (12), just be full in detection tube (71) hydraulic tank (12) in the hydraulic tank (12) hydraulic oil.
7. The fabric bursting strength instrument of claim 1, wherein: the measuring device (9) is arranged on the transparent cover (3), the measuring device (9) comprises a telescopic long box (91) which horizontally penetrates through the transparent cover (3) and is fixed with the transparent cover (3), a Z-shaped rod (92) arranged in the transparent cover (3) and a top plate (93) which is arranged in the transparent cover (3) and is attached to the surface, away from the elastic film (5), of the fabric, and the axis of the press ring (4) penetrates through the top plate (93); a piston block (911) is arranged in the telescopic long box (91) in a sliding mode, one end of the Z-shaped rod (92) is fixed with the surface, far away from the fabric, of the top plate (93), the other end of the Z-shaped rod (92) penetrates through the end face, located in the transparent cover (3), of the telescopic long box (91) and is fixed with the piston block (911), and the Z-shaped rod (92) and the telescopic long box (91) are movably sealed; the telescopic long box (91) is filled with stable water, the length direction of the telescopic long box (91) is parallel to the driving direction of the piston rod of the air cylinder (2), and the sliding direction of the piston block (911) relative to the telescopic long box (91) is consistent with the length direction of the telescopic long box (91); and scales used for measuring the moving distance of the Z-shaped rod (92) are arranged at one end of the Z-shaped rod (92) penetrating into the telescopic long box (91).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010335993.3A CN111504794A (en) | 2020-04-25 | 2020-04-25 | Fabric bursting strength appearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010335993.3A CN111504794A (en) | 2020-04-25 | 2020-04-25 | Fabric bursting strength appearance |
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| Publication Number | Publication Date |
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| CN111504794A true CN111504794A (en) | 2020-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010335993.3A Withdrawn CN111504794A (en) | 2020-04-25 | 2020-04-25 | Fabric bursting strength appearance |
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| CN (1) | CN111504794A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111982732A (en) * | 2020-08-26 | 2020-11-24 | 广东顺德安众强薄膜有限公司 | Agricultural film tensile resistance to compression integration detection device that leaks |
| CN113109157A (en) * | 2021-03-25 | 2021-07-13 | 河北广宸建筑工程检测有限公司 | Static bursting strength test system and test method |
| CN113295507A (en) * | 2021-04-23 | 2021-08-24 | 西安石油大学 | Petrochemical machinery pipeline strength detection device |
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