CN215525387U

CN215525387U - Metal thin film sheet bending fatigue measuring device

Info

Publication number: CN215525387U
Application number: CN202121219651.1U
Authority: CN
Inventors: 严小琳; 吴江
Original assignee: Nanjing Yongzhi Laser Technology Co ltd
Current assignee: Nanjing Yongzhi Laser Technology Co ltd
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2022-01-14
Anticipated expiration: 2031-06-02

Abstract

The utility model belongs to the technical field of fatigue tests of practical metal materials, and particularly relates to a metal thin film sheet bending fatigue measuring device which comprises a machine body, wherein an upper clamping plate is arranged inside an upper U-shaped clamping head, a first knob is arranged below the upper U-shaped clamping head, a first screw rod is fixedly connected to the upper end surface of the first knob, L-shaped clamping heads are fixedly connected to the left side and the right side of the upper end surface of a base, a lower clamping plate is arranged inside each of the two L-shaped clamping heads, two second knobs are arranged above the two L-shaped clamping heads, and second screw rods are fixedly connected to the lower ends of the four second knobs, so that the problems that when a metal grinding sheet sample is clamped and fixed, the metal grinding sheet sample is prevented from being damaged, and mounting holes for inserting bolts are difficult to align quickly are solved, the speed of quickly clamping and fixing the metal grinding sheet sample is improved, and the efficiency of the compression fatigue test of the metal grinding sheet sample is improved, and the problem that the clamping blocks and the bolts are easy to lose after disassembly is avoided.

Description

Metal thin film sheet bending fatigue measuring device

Technical Field

The utility model relates to the technical field of fatigue tests of practical metal materials, in particular to a device for measuring bending fatigue of a metal film sheet.

Background

The diaphragm type compressor is also called as a diaphragm type compressor, is a type of reciprocating compressor in a positive displacement compressor, adopts hydraulic drive diaphragm, consists of a hydraulic system and a gas compression system, a piston moving forward enables hydraulic oil to impact the bottom of the diaphragm to extrude a cavity and discharge process gas, a metal diaphragm is clamped between two clamps with high precision, a sealing coil is arranged around the metal diaphragm and fastened by bolts, and the metal diaphragm has good sealing property; the air cavity part in the film cavity does not need to be lubricated, so that the compressed air is not polluted; the high-pressure compression can be realized, and the high-pressure compression can be widely applied to laboratory research, petroleum and gas industries, chemical industries, metallurgical industries, pharmaceutical industries and electric power industries at present, wherein a metal diaphragm is a vulnerable part, the fatigue performance of the metal diaphragm is a key factor for determining the service life of the diaphragm, when the diaphragm is selected, a periodic load test needs to be carried out on the metal diaphragm in order to test the reliability of the metal diaphragm, when the diaphragm is subjected to bending cyclic load, the surface layer is the tensile and compressive cyclic load, but the tensile and compressive fatigue test can not replace the bending fatigue, the stress of the material is changed along with the thickness when the material is subjected to the bending load, and the surface layer has the maximum stress; the thicker bending direction has a certain shear stress, when the diaphragm is thinner, the stress state of the diaphragm is a plane stress state (the upper and lower surface layers are unstressed free surfaces), in order to simulate the stress state of the compressor in actual service to the maximum extent, a symmetrical bending fatigue test needs to be carried out on the metal diaphragm, the stress state in the material test is calculated by utilizing the elasticity mechanics, and an S-N curve is obtained by combining the fatigue cycles.

CN104677749B discloses a device and a method for measuring bending fatigue of metal thin film sheet of diaphragm compressor, wherein when clamping and fixing a metal grinding sheet sample, a bolt needs to pass through the metal grinding sheet sample, and further damage is easily caused to the metal grinding sheet sample, and it is inconvenient to align the mounting hole for inserting the bolt quickly, so that the speed of clamping and fixing the metal grinding sheet sample quickly is reduced, and the clamp block and the bolt are easily lost after disassembly.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the background art, the utility model provides a metal thin film sheet bending fatigue measuring device which has the characteristics of preventing damage to a metal grinding sheet sample when the metal grinding sheet sample is clamped and fixed and preventing the problem that an installation hole which is convenient for inserting a bolt is difficult to align quickly, improving the speed of clamping and fixing the metal grinding sheet sample quickly, improving the efficiency of testing the metal grinding sheet sample for the compressive fatigue resistance, and avoiding the problem that a clamping block and the bolt are easy to lose after being disassembled.

In order to achieve the purpose, the utility model provides the following technical scheme: a metal thin film sheet bending fatigue measuring device comprises a machine body, wherein an upper U-shaped chuck and a base are arranged inside the machine body, the base is positioned below the upper U-shaped chuck, an upper clamping plate is arranged inside the upper U-shaped chuck, a first knob is arranged below the upper U-shaped chuck, a first screw rod is fixedly connected to the upper end face of the first knob, the upper end of the first screw rod penetrates through the upper U-shaped chuck and extends into the upper U-shaped chuck, a first movable block is movably connected to the upper end face of the first screw rod, the upper end face of the first movable block is fixedly connected with the lower end face of the upper clamping plate, L chucks are fixedly connected to the left side and the right side of the upper end face of the base, lower clamping plates are arranged inside the two L chucks, second movable blocks are fixedly connected to the upper end faces of the two lower clamping plates, two second knobs are arranged above the two L chucks, the lower ends of the four second knobs are fixedly connected with second screw rods, and the four second screw rods respectively penetrate through the two L-shaped chucks and are movably connected with the upper end faces of the four second movable blocks.

In order to conveniently drive the base to move back and forth and to be matched with and clamped and fixed by the upper U-shaped chuck, and the base moves to the front inside the machine body to clamp and fix two ends of the metal grinding sheet sample, the operation is convenient, as the preferable preference of the metal film sheet bending fatigue measuring device disclosed by the utility model, the bottom inside the machine body is provided with the groove, the rear end inside the groove is provided with the bearing seat, the front end surface of the machine body is connected with the bearing sleeve in a penetrating manner, the front part of the bearing sleeve is provided with the handle, the rear end surface of the handle is fixedly connected with the threaded rod, the rear end of the threaded rod penetrates through the bearing sleeve and is movably connected with the front end surface of the bearing seat, the outer side wall of the threaded rod is movably connected with the movable seat, and the upper end surface of the movable seat is fixedly connected with the lower end surface of the base.

In order to adjust the height of the upper U-shaped chuck conveniently according to the height of the metal abrasive disc sample, the device for measuring the bending fatigue of the metal thin film sheet is preferably used, wherein an installation block is installed at the top end inside the machine body, an electric control telescopic rod is installed on the lower end face of the installation block, and the lower end face of the electric control telescopic rod is detachably connected with the upper end face of the upper U-shaped chuck.

In order to conveniently limit the forward and backward movement of the movable seat and improve the stability of the forward and backward movement of the movable seat, the device for measuring the bending fatigue of the metal thin film sheet is preferably provided with the sliding grooves at the left and right sides in the groove, the sliding blocks are connected in the two sliding grooves in a sliding manner, and the opposite ends of the two sliding blocks are fixedly connected with the left and right sides of the movable seat respectively.

In order to avoid the problem that the hands of the inspector are easy to slip from the grip, the outer side wall of the grip is preferably fixedly connected with a rubber anti-slip sleeve.

In order to improve the stability of the device when the device is placed on the ground, the lower end face of the machine body is preferably fixedly connected with four anti-skid support legs which are uniformly distributed.

In order to facilitate the control of the opening and closing of the electric control telescopic rod, the metal film sheet bending fatigue measuring device is preferably provided with a switch arranged on the right side of the machine body, and the switch is electrically connected with the electric control telescopic rod.

Compared with the prior art, the utility model has the beneficial effects that:

1. the metal film sheet bending fatigue measuring device comprises a base, a first screw, a second screw, a third screw, a fourth screw, a fifth screw, a sixth screw, a fifth screw, a sixth screw, a fifth screw, a sixth screw, a fifth screw, a sixth screw, a fifth screw, a sixth screw, a sixth, a fifth screw, a fifth, a sixth, a fifth screw, a sixth, a fifth, a sixth, a fifth, a sixth, a fifth, a sixth, a fifth, a sixth, a fifth, a sixth, a fifth, a sixth, a fifth, the speed of clamping and fixing the metal abrasive disc sample is increased, the efficiency of testing the compressive fatigue of the metal abrasive disc sample is improved, and the problem that the clamping blocks and the bolts are lost easily after disassembly is solved.

2. This kind of metal film piece bending fatigue measuring device, when the fixed centre gripping metal abrasive disc sample in base upper end, hold the handle, it is rotatory to drive the threaded rod, the sliding seat is the antedisplacement, it removes to the inside the place ahead of the organism of the installation centre gripping of being convenient for to drive the base, after installing the centre gripping to the metal abrasive disc sample, the above-mentioned step of reverse operation, it removes supreme U type chuck department and carries out the centre gripping location to metal abrasive disc sample middle part to drive the base, thereby reached and conveniently driven base back-and-forth movement and last U type chuck cooperation fixed effect, and before the base removes the inside to the organism, be convenient for when fixed to the both ends centre gripping of metal abrasive disc sample operate.

3. This kind of metal film piece bending fatigue measuring device, the base that drives preliminary fixed metal abrasive disc sample moves back behind supreme U type chuck front lower place, according to the height of metal abrasive disc sample, opens automatically controlled telescopic link, the inside top and the metal abrasive disc sample rear end of U type chuck are neat in the drive, and rotatory threaded rod drives metal abrasive disc sample and moves in supreme U type chuck, thereby reached convenient effect according to U type chuck height on the altitude mixture control of metal abrasive disc sample.

To sum up, this kind of metal film piece bending fatigue measuring device has and prevents to cause the damage and prevent to be convenient for the problem that bolt male mounting hole is difficult to quick alignment to metal abrasive disc sample when fixed to metal abrasive disc sample centre gripping, has improved the fixed speed of the quick centre gripping of metal abrasive disc sample, has improved the efficiency to metal abrasive disc sample resistance to compression fatigue test to avoid dismantling the characteristics of the easy problem of losing of back clamp splice and bolt.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a cross-sectional view of a device for measuring bending fatigue of a metal thin film sheet according to the present invention;

FIG. 2 is a left side sectional view of the housing of the present invention;

FIG. 3 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;

fig. 4 is a structural view of the upper U-shaped clamp of the present invention.

In the figure, 1, a machine body; 101. mounting blocks; 102. an electric control telescopic rod; 103. an upper U-shaped chuck; 104. an upper splint; 105. a first knob; 106. a first screw; 107. a first movable block; 2. a groove; 201. a grip; 202. a bearing seat; 203. a bearing housing; 204. a threaded rod; 205. a movable seat; 206. a chute; 207. a slider; 208. a rubber anti-slip sleeve; 3. a base; 301. an L-shaped chuck; 302. a second knob; 303. a lower splint; 304. a second screw; 305. a second movable block; 4. anti-skid support legs; 5. and (4) switching.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1-4, the present invention provides the following technical solutions: a metal thin film sheet bending fatigue measuring device comprises a machine body 1, an upper U-shaped chuck 103 and a base 3 are arranged inside the machine body 1, the base 3 is located below the upper U-shaped chuck 103, an upper clamping plate 104 is arranged inside the upper U-shaped chuck 103, a first knob 105 is arranged below the upper U-shaped chuck 103, a first screw 106 is fixedly connected to the upper end surface of the first knob 105, the upper end of the first screw 106 penetrates through the upper U-shaped chuck 103 and extends into the upper U-shaped chuck 103, a first movable block 107 is movably connected to the upper end surface of the first screw 106, the upper end surface of the first movable block 107 is fixedly connected to the lower end surface of the upper clamping plate 104, L-shaped chucks 301 are fixedly connected to the left side and the right side of the upper end surface of the base 3, lower clamping plates 303 are arranged inside the two L-shaped chucks 301, second movable blocks 305 are fixedly connected to the upper end surfaces of the two lower clamping plates 303, two second knobs 302 are arranged above the two L-shaped chucks 301, the lower ends of the four second knobs 302 are fixedly connected with second screws 304, and the four second screws 304 respectively penetrate through the two L-shaped chucks 301 and are movably connected with the upper end faces of the four second movable blocks 305.

In this embodiment: when the metal grinding sheet sample is subjected to compression fatigue testing, two ends of the metal grinding sheet sample are placed in front of two L-shaped chucks 301 and attached to the upper end face of a base 3, then four second knobs 302 are held by hands respectively, the second knobs 302 are screwed downwards, a second screw 304 drives a lower clamping plate 303 to clamp and fix the two ends of the metal grinding sheet sample to the upper end face of the base 3, then the middle part of the metal grinding sheet sample enters the upper U-shaped chuck 103 from the front of the upper U-shaped chuck 103, the upper end face of the metal grinding sheet sample is attached to the top end of the upper U-shaped chuck 103, then a first knob 105 is held by a hand and screwed upwards, a first screw 106 drives an upper clamping plate 104 to move upwards and attach to the lower end of the metal grinding sheet sample, the middle part of the metal grinding sheet sample is clamped and fixed, and the problems that damage to the metal grinding sheet sample is prevented when the metal grinding sheet sample is clamped and fixed and a mounting hole for facilitating bolt insertion is difficult to align quickly are solved, the speed of clamping and fixing the metal abrasive disc sample is increased, the efficiency of testing the compressive fatigue of the metal abrasive disc sample is improved, and the problem that the clamping blocks and the bolts are lost easily after disassembly is solved.

As a technical optimization scheme of the utility model, the bottom end inside the machine body 1 is provided with the groove 2, the rear end inside the groove 2 is provided with the bearing seat 202, the front end surface of the machine body 1 is connected with the bearing sleeve 203 in a penetrating manner, the handle 201 is arranged in front of the bearing sleeve 203, the rear end surface of the handle 201 is fixedly connected with the threaded rod 204, the rear end of the threaded rod 204 passes through the bearing sleeve 203 and is movably connected with the front end surface of the bearing seat 202, the outer side wall of the threaded rod 204 is movably connected with the movable seat 205, and the upper end surface of the movable seat 205 is fixedly connected with the lower end surface of the base 3.

In this embodiment: when the fixed centre gripping metal abrasive disc sample in base 3 upper end, hold handle 201, it is rotatory to drive threaded rod 204, sliding seat 205 moves forward, it moves to the inside the place ahead of the organism 1 of the installation centre gripping of being convenient for to drive base 3, after installing the centre gripping to the metal abrasive disc sample, the above-mentioned step of reverse operation, it carries out the centre gripping location to metal abrasive disc sample middle part to drive the supreme U type chuck 103 department of base 3 removal, thereby reached and conveniently driven 3 back-and-forth movement of base and the fixed effect of last U type chuck 103 cooperation centre gripping, and before base 3 removed the inside of organism 1, be convenient for the operation when fixed to the both ends centre gripping of metal abrasive disc sample.

As a technical optimization scheme of the utility model, the top end inside the machine body 1 is provided with the mounting block 101, the lower end surface of the mounting block 101 is provided with the electric control telescopic rod 102, and the lower end surface of the electric control telescopic rod 102 is detachably connected with the upper end surface of the upper U-shaped chuck 103.

In this embodiment: the model of the electric control telescopic rod 102 is as follows: MAL4025, drive the base 3 of preliminary fixed metal abrasive disc sample and move backward to behind the front lower place of the last U type chuck 103, according to the height of metal abrasive disc sample, open automatically controlled telescopic link 102, drive the inside top and the metal abrasive disc sample rear end parallel and level of U type chuck 103, and rotatory threaded rod 204 drives the metal abrasive disc sample and moves to in the last U type chuck 103, thereby reached convenient effect according to U type chuck 103 height on the altitude mixture control of metal abrasive disc sample.

As a technical optimization scheme of the utility model, the left side and the right side of the inside of the groove 2 are both provided with sliding grooves 206, the insides of the two sliding grooves 206 are both connected with sliding blocks 207 in a sliding manner, and the opposite ends of the two sliding blocks 207 are respectively fixedly connected with the left side and the right side of the movable seat 205.

In this embodiment: when the movable seat 205 moves back and forth, the two sliding blocks 207 are located in the two sliding grooves 206 and slide back and forth, so that the back and forth movement of the movable seat 205 is limited conveniently, and the stability of the movable seat 205 during the back and forth movement is improved.

As a technical optimization scheme of the utility model, the outer side wall of the handle 201 is fixedly connected with a rubber anti-slip sleeve 208.

In this embodiment: when the inspector holds the grip 201, the problem that the hand of the inspector is easy to slip from the grip 201 is avoided through the rubber anti-slip sleeve 208.

As a technical optimization scheme of the utility model, the lower end surface of the machine body 1 is fixedly connected with four evenly distributed anti-skidding support legs 4.

In this embodiment: when the device is placed on the ground, the stability of the device when placed on the ground is improved by the four anti-slip support legs 4.

As a technical optimization scheme of the present invention, a switch 5 is installed on the right side of the machine body 1, and the switch 5 is electrically connected with the electric control telescopic rod 102.

In this embodiment: the switch 5 is pressed, so that the electric control telescopic rod 102 is conveniently controlled to be opened and closed.

The working principle and the using process of the utility model are as follows: when the metal grinding sheet sample is subjected to compression fatigue test, the handle 201 is held by a hand, the threaded rod 204 is driven to rotate, the movable seat 205 moves forwards to drive the base 3 to move to the front inside the machine body 1 convenient for installation and clamping, the two sliding blocks 207 are positioned in the two sliding grooves 206 to slide forwards and backwards simultaneously, the base 3 is driven to move to the upper U-shaped chuck 103 to clamp and position the middle part of the metal grinding sheet sample, the two ends of the metal grinding sheet sample are put into and attached to the upper end surface of the base 3 from the front of the two L-shaped chucks 301, then the four second knobs 302 are respectively held by the hand and are screwed downwards, the second screw 304 drives the lower clamping plate 303 to clamp and fix the two ends of the metal grinding sheet sample to the upper end surface of the base 3, after the metal grinding sheet sample is installed and clamped, the base 3 is driven to move backwards, the base 3 which primarily fixes the metal grinding sheet sample is driven to move backwards to the front lower part of the upper U-shaped chuck 103, according to the height of the metal grinding sheet sample, the electric control telescopic rod 102 is started by pressing the switch 5, the inner top end of the upper U-shaped chuck 103 is driven to be parallel and level with the rear end of the metal grinding sheet sample, the threaded rod 204 is rotated to drive the metal grinding sheet sample to move into the upper U-shaped chuck 103, the upper end face of the metal grinding sheet sample is attached to the inner top end of the upper U-shaped chuck 103, then the first knob 105 is held by a hand and screwed upwards, the first screw 106 drives the upper clamping plate 104 to move upwards and attach to the lower end of the metal grinding sheet sample, and the middle of the metal grinding sheet sample is clamped and fixed.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a metal film piece bending fatigue measuring device, includes organism (1), its characterized in that: an upper U-shaped chuck (103) and a base (3) are arranged in the machine body (1), the base (3) is located below the upper U-shaped chuck (103), an upper clamping plate (104) is arranged in the upper U-shaped chuck (103), a first knob (105) is arranged below the upper U-shaped chuck (103), a first screw (106) is fixedly connected to the upper end face of the first knob (105), the upper end of the first screw (106) penetrates through the upper U-shaped chuck (103) and extends into the upper U-shaped chuck (103), a first movable block (107) is movably connected to the upper end face of the first screw (106), the upper end face of the first movable block (107) is fixedly connected with the lower end face of the upper clamping plate (104), L chucks (301) are fixedly connected to the left side and the right side of the upper end face of the base (3), and lower clamping plates (303) are arranged in the L chucks (301), two equal fixedly connected with second movable block (305) of up end of lower plate (303), two the top of L chuck (301) all is provided with two second knobs (302), four the equal fixedly connected with second screw rod (304) of lower extreme of second knob (302), four second screw rod (304) run through two L chucks (301) respectively and with the up end swing joint of four second movable blocks (305).

2. A device for measuring bending fatigue of a metallic foil according to claim 1, wherein: the utility model discloses a bearing frame, including organism (1), bearing frame (202), bearing housing (203) and bearing frame (204), the preceding terminal surface through connection of organism (1), the place ahead of bearing housing (203) is provided with handle (201), the rear end face fixedly connected with threaded rod (204) of handle (201), the rear end of threaded rod (204) pass bearing housing (203) and with the preceding terminal surface swing joint of bearing frame (202), the lateral wall swing joint of threaded rod (204) has sliding seat (205), the up end of sliding seat (205) and the lower terminal surface fixed connection of base (3).

3. A device for measuring bending fatigue of a metallic foil according to claim 1, wherein: the novel electric-control telescopic handle is characterized in that an installation block (101) is installed at the top end of the interior of the machine body (1), an electric-control telescopic rod (102) is installed on the lower end face of the installation block (101), and the lower end face of the electric-control telescopic rod (102) is detachably connected with the upper end face of an upper U-shaped chuck (103).

4. A device for measuring bending fatigue of a metallic foil according to claim 2, wherein: spout (206) have all been seted up to the inside left and right sides of recess (2), two equal sliding connection in inside of spout (206) has slider (207), two the one end that slider (207) is relative respectively with the left and right sides fixed connection of sliding seat (205).

5. A device for measuring bending fatigue of a metallic foil according to claim 2, wherein: the outer side wall of the handle (201) is fixedly connected with a rubber anti-slip sleeve (208).

6. A device for measuring bending fatigue of a metallic foil according to claim 1, wherein: the lower end face of the machine body (1) is fixedly connected with four anti-skidding support legs (4) which are uniformly distributed.

7. A device for measuring bending fatigue of a metallic foil according to claim 3, wherein: a switch (5) is installed on the right side of the machine body (1), and the switch (5) is electrically connected with the electric control telescopic rod (102).