Stretching tool of electronic fatigue testing machine

Abstract

The utility model relates to the technical field of electronic fatigue testing machines, in particular to an electronic fatigue testing machine stretching tool which comprises a fatigue testing machine stretching body, a U-shaped vertical frame is fixedly connected to the upper side of the fatigue testing machine stretching body, a threaded rotating shaft is rotationally connected to the inner side face of the U-shaped vertical frame, and a lifting plate is connected to the outer surface of the threaded rotating shaft in a threaded mode. According to the utility model, rubber strips at the two groups of displacement clamping plates and rubber convex blocks at the two rotating plates can be used for clamping the periphery of a workpiece in an attached manner, so that the workpiece to be subjected to a tensile test can be further stably clamped, and the tensile test can be safely and stably carried out; the clamping stability of the stretching tool of the electronic fatigue testing machine is improved, meanwhile, when the lifting plate on the threaded rotating shaft moves downwards to stretch the workpiece, the pressure sensor can be used for obtaining stretching parameters borne by the workpiece, and an electronic fatigue test of the workpiece is carried out in sequence.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic fatigue testing machine technical field, concretely is a kind of electronic fatigue testing machine tensile tool. BACKGROUND

[0002] Electronic fatigue testing machine is a kind of instrument for material and component fatigue performance test, with high precision, high efficiency, high repeatability and high reliability etc., it not only can simulate the fatigue behavior of material under long time, complex stress condition, but also can provide scientific basis for product durability design, material performance evaluation and failure analysis.

[0003] Prior art discloses patent application number "CN202221216446.4", a metal material tensile fatigue testing machine, including base and the lower beam being arranged on base and the upper beam being arranged above lower beam, upper beam is equipped with upper chuck, lower beam is equipped with lower chuck, upper beam and lower beam are equipped with protection mechanism;Protection mechanism includes multiple turn plates being rotatably arranged on lower beam and being spaced around lower chuck and multiple stoppers being slidably arranged on upper beam for keeping multiple turn plates vertical state;Not only can prevent the splash of metal material breakage from causing harm or injury to the experimenters or equipment outside, but also easy to store and convenient to use.

[0004] The tensile fatigue testing machine can only prevent the splash of metal material breakage, but in actual use, since electronic fatigue testing machine tensile tool can only simply clamp the two ends of workpiece, the workpiece is not fixed firmly, so that the tensile test cannot be carried out safely and stably, thereby affecting the stability of tensile tool clamping workpiece, and it is inconvenient to use. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of electronic fatigue testing machine tensile tool to solve the problems raised in the above background.

[0006] The utility model can be realized by the following technical solutions:

[0007] A kind of electronic fatigue testing machine tensile tool, including fatigue testing machine pull main body, the upper side of fatigue testing machine pull main body is fixedly connected with U type vertical frame, the inner side of U type vertical frame is rotatably connected with threaded shaft, the outer surface of threaded shaft is threadedly connected with lifting plate, the upper side of lifting plate is installed with the two U type plates of symmetrical arrangement, the inner side of two U type plates is rotatably connected with turn plate;

[0008] The inner side of the two rotating plates is connected with rubber protrusions, the first spring is arranged and connected between the two rotating plates and the U-shaped plate, the upper side of the U-shaped vertical frame is fixedly installed with a pressure sensor, the top end of the inside of the U-shaped vertical frame is slidably connected with a movable seat, the lower side of the pressure sensor is connected with a circular ring, the upper side of the movable seat is fixedly connected with a hook, the lower side of the movable seat is installed with a first fixing seat, and the upper side of the lifting plate is fixedly connected with a second fixing seat.

[0009] Preferably, the first fixing seat and the second fixing seat are both internally rotatably connected with double-head threaded rotating rods, the outer surfaces of the two double-head threaded rotating rods are both threadedly connected with two symmetrically arranged displacement clamping plates, the inner sides of the four displacement clamping plates are all arrayed with rubber strips, the interiors of the first fixing seat and the second fixing seat are both connected with two connecting rods, the outer surfaces of the two connecting rods are slidably connected with the interiors of the displacement clamping plates, the front sides of the double-head threaded rotating rods penetrate through the first fixing seat and the second fixing seat and extend to the front sides of the first fixing seat and the second fixing seat, and the front sides of the two double-head threaded rotating rods are both installed with operating hand wheels.

[0010] Preferably, the lower side of the lifting plate is fixedly connected with a first circular seat, the lower side of the first circular seat is threadedly connected with a threaded top seat, the upper side of the main body of the fatigue testing machine is fixedly connected with a second circular seat, and the upper side of the second circular seat is threadedly connected with a threaded bottom seat.

[0011] Preferably, the rear side of the lifting plate is fixedly provided with a fixed plate, the upper side of the fixed plate is installed with an electric push rod, the upper side of the electric push rod is fixedly connected with a U-shaped top plate, and the lower side of the U-shaped top plate is connected with two mounting blocks for extruding the rotating plate.

[0012] Preferably, the upper side of the main body of the fatigue testing machine is installed with two symmetrically arranged supporting plates, one side of each of the two supporting plates is slidably connected with a rubber clamping block, one side of the rubber clamping block penetrates through the supporting plate and extends to the other side of the supporting plate, and the second spring is fixedly connected between each of the two rubber clamping blocks and the supporting plate.

[0013] Preferably, the inner side of the U-shaped vertical frame is installed with two parallelly arranged limiting vertical rods, the outer surfaces of the two limiting vertical rods are slidably connected with the interior of the lifting plate, the upper side of the threaded rotating shaft penetrates through the U-shaped vertical frame and extends to the upper side of the U-shaped vertical frame, the upper side of the threaded rotating shaft is fixedly connected with a servo motor through a motor mounting plate, and the hook is hung in the interior of the circular ring.

[0014] The utility model discloses the beneficial effect that:

[0015] 1. The utility model discloses a rubber strip at two displacement clamping plates and rubber bumps at two rotating plates can be attached and clamped to the periphery of a workpiece, for further stable clamping of the workpiece to be stretched for tensile test, so that the tensile test is carried out safely and stably, and the stability of the electronic fatigue testing machine tensile tool clamping is improved, and when the lifting plate on the threaded rotating shaft moves downward to stretch the workpiece, the pressure sensor can be used to obtain the stretching parameters of the workpiece, and the electronic fatigue test of the workpiece is carried out accordingly.

[0016] 2. The utility model discloses another workpiece is placed above the threaded base, when the lifting plate on the threaded rotating shaft moves downward, the threaded top base at the lifting plate can compress the workpiece on the threaded base, so that the stress condition of the workpiece when stretching or compressing can be simulated, so that the durability of the product is judged, and the two rubber clamping blocks provided with the second spring also clamp and fix the workpiece when compressing, ensuring the safety during the test. DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced, and obviously, other drawings can be obtained by the person skilled in the art without creative labor on the premise of not paying the creative labor.

[0018] Figure 1 It is the whole structure schematic diagram of the utility model;

[0019] Figure 2 It is the installation schematic diagram of the threaded rotating shaft and the lifting plate in the utility model; Figure 1

[0020] Figure 3 It is the installation schematic diagram of the circular ring and the hook in the utility model; Figure 2

[0021] Figure 4 It is the structure schematic diagram of the rotating plate, rubber bump and first spring in the utility model; Figure 1

[0022] Figure 5 It is the installation schematic diagram of the threaded top base and threaded base in the utility model; Figure 1 Marked as follows in the drawing:

[0023]

[0024] ​​​​1. Fatigue testing machine pull body; 2. U-shaped vertical frame; 3. Threaded rotating shaft; 4. Limiting vertical rod; 5. Lifting plate; 6. Pressure sensor; 7. Ring; 8. Movable seat; 9. Hook; 10. First fixed seat; 11. Second fixed seat; 12. Double-headed threaded rotating rod; 13. Displacement clamp; 14. Rubber strip; 15. U-shaped plate; 16. Rotating plate; 17. First spring; 18. Rubber protrusion; 19. Connecting rod; 20. Operating handwheel; 21. First round seat; 22. Threaded top seat; 23. Second round seat; 24. Threaded base; 25. Fixed plate; 26. Electric push rod; 27. U-shaped top plate; 28. Mounting block; 30. Support plate; 31. Rubber clamp; 32. Second spring; 66. Servo motor. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figures 1 to 5 As shown, an electronic fatigue testing machine tensile fixture includes a fatigue testing machine tensile body 1, a U-shaped vertical frame 2 fixedly connected to the upper side of the fatigue testing machine tensile body 1, a threaded shaft 3 rotatably connected to the inner side of the U-shaped vertical frame 2, a lifting plate 5 threadedly connected to the outer surface of the threaded shaft 3, two symmetrically arranged U-shaped plates 15 installed on the upper side of the lifting plate 5, and a rotating plate 16 rotatably connected to the inner side of each of the two U-shaped plates 15.

[0027] Rubber protrusions 18 are connected to the inner sides of both rotating plates 16. The installation and use of rubber strips 14 and rubber protrusions 18 can increase the friction with the product, so as to clamp the product more firmly. A first spring 17 is connected in an array between the two rotating plates 16 and the U-shaped plate 15. A pressure sensor 6 is fixedly installed on the upper side of the U-shaped vertical frame 2. The pressure sensor 6 is model F01R00E016. When the product is pulled downward, the pressure sensor 6 located at the product will also be pulled, so that the pressure value of the product can be measured by the pressure sensor 6. A movable seat 8 is slidably connected to the top of the inside of the U-shaped vertical frame 2. A ring 7 is connected to the lower side of the pressure sensor 6. A hook 9 is fixedly connected to the upper side of the movable seat 8. A first fixed seat 10 is installed on the lower side of the movable seat 8. A second fixed seat 11 is fixedly connected to the upper side of the lifting plate 5.

[0028] The inner part of the first fixing base 10 and the second fixing base 11 is rotationally connected with a double-head threaded rotating rod 12, the outer surface of the two double-head threaded rotating rods 12 is threadedly connected with two symmetrically arranged displacement clamping plates 13, the inner side surface of the four displacement clamping plates 13 is arrayedly connected with rubber strips 14, the inner part of the first fixing base 10 and the second fixing base 11 is connected with two connecting rods 19, the outer surface of the two connecting rods 19 is slidingly connected with the inner part of the displacement clamping plate 13, the movement track of the displacement clamping plate 13 can be guided by the two connecting rods 19, so that the two displacement clamping plates 13 can be stably moved and adjusted to clamp and position the product, the front side of the double-head threaded rotating rod 12 penetrates through the first fixing base 10 and the second fixing base 11 and extends to the front side of the first fixing base 10 and the second fixing base 11, and the front side of the two double-head threaded rotating rods 12 is provided with an operating hand wheel 20.

[0029] The lower side of the lifting plate 5 is fixedly connected with a first circular seat 21, the lower side of the first circular seat 21 is threadedly connected with a threaded top seat 22, the upper side of the fatigue testing machine pulling main body 1 is fixedly connected with a second circular seat 23, and the upper side of the second circular seat 23 is threadedly connected with a threaded bottom seat 24.

[0030] The rear side of the lifting plate 5 is fixedly provided with a fixed plate 25, the upper side of the fixed plate 25 is provided with an electric push rod 26, the model of the electric push rod 26 is HB-DJ801, the upper side of the electric push rod 26 is fixedly connected with a U-shaped top plate 27, and the lower side of the U-shaped top plate 27 is connected with two mounting blocks 28 for extruding the rotating plate 16.

[0031] The upper side of the fatigue testing machine pulling main body 1 is provided with two symmetrically arranged supporting plates 30, one side of the two supporting plates 30 is slidingly connected with rubber clamping blocks 31, one side of the rubber clamping blocks 31 penetrates through the supporting plate 30 and extends to the other side of the supporting plate 30, and the second spring 32 is fixedly connected between the two rubber clamping blocks 31 and the supporting plate 30.

[0032] The inner side surface of the U-shaped vertical support 2 is provided with two parallelly arranged limiting vertical rods 4, the outer surface of the two limiting vertical rods 4 is slidingly connected with the inner part of the lifting plate 5, the movement track of the lifting plate 5 can be limited and guided by the two limiting vertical rods 4, the lifting plate 5 can be stably moved and adjusted so as to be subjected to tensile or compressive test, the upper side of the threaded rotating shaft 3 penetrates through the U-shaped vertical support 2 and extends to the upper side of the U-shaped vertical support 2, the upper side of the threaded rotating shaft 3 is fixedly connected with a servo motor 66 through a motor mounting plate, and the hook 9 is hung in the inner part of the circular ring 7.

[0033] The working principle of the electronic fatigue testing machine tensile tool provided by the utility model is as follows:

[0034] By the workpiece to be stretched test is placed between the first fixed seat 10 and the second fixed seat 11, then in turn rotate two operating hand wheel 20, so that the two double head screw rod 12 can be driven to rotate, let two displacement clamping plate 13 on the two double head screw rod 12 can move towards each other, so that the rubber strip 14 at two groups of displacement clamping plate 13 can be clamped on the front and back of the workpiece, then let the electric push rod 26 drive U-shaped top plate 27 to move down, so that the two mounting blocks 28 at U-shaped top plate 27 can extrude two rotating plates 16 mounted with first spring 17, let two rotating plates 16 rotate downward, so that the rubber bump 18 at two rotating plates 16 can be clamped to the left and right sides of the workpiece, for further stable clamping the workpiece to be stretched test, in order to safely and stably carry out the stretching test, improve the stability of the electronic fatigue testing machine stretching work clamping, at the same time, the output shaft of the servo motor 66 drives the threaded shaft 3 to rotate, so that the lifting plate 5 on the threaded shaft 3 can move downward to stretch the workpiece, so that the pressure sensor 6 can be used to obtain the stretching parameters of the workpiece, and the electronic fatigue test of the workpiece is carried out accordingly.

[0035] By placing another workpiece above the threaded base 24, the output shaft of the servo motor 66 drives the threaded shaft 3 to reverse, so that the lifting plate 5 on the threaded shaft 3 can move downward, so that the threaded top seat 22 at the lifting plate 5 can compress the workpiece on the threaded base 24, so that the stress condition of the workpiece during stretching or compression can be simulated, so as to judge the durability of the product, then the two rubber clamping blocks 31 mounted with the second spring 32 will also clamp and fix the workpiece during compression, to ensure the safety during test, at the same time, the threaded top seat 22 and the threaded base 24 are installed in threaded connection mode, convenient to install, so that the new threaded top seat 22 and the threaded base 24 can be replaced quickly.

[0036] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. An electronic fatigue testing machine tensile jig, comprising a fatigue testing machine tensile main body (1), characterized in that: The upper side of the fatigue testing machine pull main body (1) is fixedly connected with a U-shaped vertical frame (2), the inner side of the U-shaped vertical frame (2) is rotatably connected with a threaded rotating shaft (3), the outer surface of the threaded rotating shaft (3) is threadedly connected with a lifting plate (5), the upper side of the lifting plate (5) is mounted with two symmetrically arranged U-shaped plates (15), the inner side of each of the two U-shaped plates (15) is rotatably connected with a rotating plate (16); The inner side of each of the two rotating plates (16) is connected with a rubber protruding block (18), the space between each of the two rotating plates (16) and the U-shaped plate (15) is arrayed with a first spring (17), the upper side of the U-shaped vertical frame (2) is fixedly mounted with a pressure sensor (6), the top end inside the U-shaped vertical frame (2) is slidably connected with a movable seat (8), the lower side of the pressure sensor (6) is connected with a circular ring (7), the upper side of the movable seat (8) is fixedly connected with a hook (9), the lower side of the movable seat (8) is mounted with a first fixed seat (10), the upper side of the lifting plate (5) is fixedly connected with a second fixed seat (11).

2. The electronic fatigue testing machine tensile fixture of claim 1, wherein, The inside of each of the first fixed seat (10) and the second fixed seat (11) is rotatably connected with a double-headed threaded rotating rod (12), the outer surface of each of the two double-headed threaded rotating rods (12) is threadedly connected with two symmetrically arranged displacement clamping plates (13), the inner side of each of the four displacement clamping plates (13) is arrayed with a rubber strip (14), the inside of each of the first fixed seat (10) and the second fixed seat (11) is connected with two connecting rods (19), the outer surface of each of the two connecting rods (19) is slidably connected with the inside of the displacement clamping plate (13), the front side of the double-headed threaded rotating rod (12) penetrates through the first fixed seat (10) and the second fixed seat (11) and extends to the front side of the first fixed seat (10) and the second fixed seat (11), the front side of each of the two double-headed threaded rotating rods (12) is mounted with an operating hand wheel (20).

3. The electronic fatigue testing machine tensile fixture of claim 1, wherein, The lower side of the lifting plate (5) is fixedly connected with a first circular seat (21), the lower side of the first circular seat (21) is threadedly connected with a threaded top seat (22), the upper side of the fatigue testing machine pull main body (1) is fixedly connected with a second circular seat (23), the upper side of the second circular seat (23) is threadedly connected with a threaded bottom seat (24).

4. The electronic fatigue testing machine tensile fixture of claim 1, wherein, The rear side of the lifting plate (5) is fixedly provided with a fixed plate (25), the upper side of the fixed plate (25) is mounted with an electric push rod (26), the upper side of the electric push rod (26) is fixedly connected with a U-shaped top plate (27), the lower side of the U-shaped top plate (27) is connected with two mounting blocks (28) for extruding the rotating plate (16).

5. The electronic fatigue testing machine tensile fixture of claim 1, wherein, The upper side of the fatigue testing machine pull main body (1) is mounted with two symmetrically arranged support plates (30), one side of each of the two support plates (30) is slidably connected with a rubber clamping block (31), one side of the rubber clamping block (31) penetrates through the support plate (30) and extends to the other side of the support plate (30), each of the two rubber clamping blocks (31) and the support plate (30) is fixedly connected with a second spring (32).

6. The electronic fatigue testing machine tensile fixture of claim 1, wherein, The inner side of the U-shaped vertical frame (2) is provided with two limiting vertical rods (4) arranged in parallel, the outer surfaces of the two limiting vertical rods (4) are slidably connected with the inside of the lifting plate (5), the upper side of the threaded rotating shaft (3) extends through the U-shaped vertical frame (2) to the upper side of the U-shaped vertical frame (2), the upper side of the threaded rotating shaft (3) is fixedly connected with a servo motor (66) through a motor mounting plate, and the hook (9) is hung in the inside of the circular ring (7).

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