Fatigue experiment fixing device

Abstract

The utility model discloses a fatigue test fixing device, which relates to the technical field of fatigue testing machine accessories and comprises a controller and a test box, an air cylinder is fixedly mounted at the top end of the test box, the air cylinder penetrates through the top end of the test box and is fixedly connected with a compression ring, and a fixing component is arranged in the test box; the fixing assembly comprises a mounting rod, the mounting rod is fixedly mounted at the bottom end of the interior of the test box, a lower mold plate is fixedly mounted at the top end of the mounting rod, and guide rods are fixedly mounted on the two sides of the top end of the lower mold plate. According to the fatigue test fixing device, fatigue tests can be carried out on springs 8 of different specifications and sizes, the springs 8 can be effectively prevented from running off in the test process, the fatigue test can be carried out on tension springs 9, the applicability effect of the device is effectively improved, and the problems that a traditional fatigue test fixing device can only test springs 8 of a single specification and is poor in applicability are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fatigue testing machine accessory technical field, especially in kind of fatigue test fixed device. BACKGROUND

[0002] Spring 8 fatigue test is a kind of test method for evaluating spring 8 service life and durability, it simulates various load situations that spring 8 can experience in practical application, and the fatigue fracture of spring 8 is observed by cyclic loading;

[0003] The existing fatigue test fixed device groove size is single, only single spring 8 can be tested, and the device for fixing spring 8 needs to be replaced constantly to adapt to different spring 8, so the applicability is relatively poor, and it is time-consuming and laborious to operate. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of fatigue test fixed devices, which can effectively solve the technical problems in the background art.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:

[0006] A kind of fatigue test fixed device, including controller and test box, the top of the test box is fixedly installed with air cylinder, the air cylinder is fixedly connected with the pressure ring of the top of test box and penetrates, the test box is equipped with fixed assembly;

[0007] The fixed assembly includes mounting rod, the mounting rod is fixedly installed at the bottom of the inside of test box, the top of the mounting rod is fixedly installed with lower die plate, the both sides of the top of the lower die plate are fixedly installed with guide rod, the upper die plate is slidably installed on the surface of the guide rod, the recess is fixedly provided in the center position of the top of the lower die plate and the bottom of the upper die plate, the lower die plate and the upper die plate are equipped with anti-dropping structure, the anti-dropping structure includes adjusting rod, the two adjusting rods penetrate the center position of the lower die plate and the upper die plate respectively, the adjusting rod is connected with the lower die plate and the upper die plate through thread, and the adjusting rod is fixedly installed with adjusting air bag on the surface.

[0008] As a further scheme of the utility model, one end of the adjusting air bag is fixedly connected with the adjusting rod, and the other end is in close contact with the recess.

[0009] As a further scheme of the utility model, the mounting rod has four, and is located at the bottom of the lower die plate four corner positions.

[0010] As a further scheme of the utility model, the adjusting rod, the upper die plate and the compression ring are provided with a connecting structure, the connecting structure comprises a connecting seat, the connecting seat is fixedly installed at the top center position of the upper die plate, the surface of the mounting ring is provided with a connecting hole one at both sides, the surface of the compression ring is provided with a connecting hole two at both sides, a connecting rod is slidably connected in the connecting hole one and the connecting hole two, and the surface of the adjusting rod is provided with two mounting rings which are rotationally installed at the top.

[0011] As a further scheme of the utility model, the compression ring is internally provided with an opening, and the opening size is adaptively matched with the connecting seat.

[0012] As a further scheme of the utility model, the adjusting rod penetrates the connecting seat and is slidably connected with the connecting seat.

[0013] As a further scheme of the utility model, the mounting ring is a semicircular structure and is internally provided with an opening.

[0014] The utility model has the advantages as follows:

[0015] The fixing assembly and the anti-dropping structure are arranged, the springs 8 with different diameters can be fixed, the horizontal displacement of the springs 8 in the test process is prevented, the test data of the springs 8 is not inaccurate or the springs 8 run off, and the applicability of the device is effectively improved.

[0016] The connecting structure is arranged, the tension spring 9 can be fixed, the fatigue test of the tension spring 9 is carried out, the fixed die plate does not need to be replaced, the device can test the springs 8 with different diameters and can also carry out the fatigue test of the tension spring 9, and the applicability of the device is effectively improved. DRAWINGS

[0017] Figure 1 It is an overall structure schematic view of the fatigue test fixing device.

[0018] Figure 2 It is a fixing assembly split schematic view of the fatigue test fixing device.

[0019] Figure 3 It is an anti-dropping structure schematic view of the fatigue test fixing device.

[0020] Figure 4 It is a connecting structure schematic view of the fatigue test fixing device. Figure 3 It is an A area enlarged schematic view.

[0021] Figure 5 It is a connecting structure schematic view of the fatigue test fixing device.

[0022] Figure 6The utility model discloses a spring 8 fatigue test experimental schematic diagram of a fatigue experiment fixing device.

[0023] Figure 7 The utility model discloses a tension spring 9 fatigue test experimental schematic diagram of a fatigue experiment fixing device.

[0024] In the drawing: 1, controller, 2, test box, 3, air cylinder, 4, pressing ring, 5, fixed assembly, 6, anti -drop structure, 7, connecting structure, 8, spring, 9, tension spring, 501, mounting rod, 502, lower die plate, 503, recess, 504, guide rod, 505, upper die plate, 601, adjusting rod, 602, adjusting air bag, 701, mounting ring, 702, connecting seat, 703, connecting hole one, 704, connecting hole two, 705, connecting rod. Specific embodiments

[0025] In order to make the technical means, the creation features, the purposes and the effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0026] As Figures 1-7 Shown, a kind of fatigue experiment fixing device, including controller 1 and test box 2, the top of test box 2 is fixedly installed with air cylinder 3, air cylinder 3 is fixedly connected with pressing ring 4, which penetrates the top of test box 2, and fixed assembly 5 is equipped in test box 2.

[0027] Fixed assembly 5 includes mounting rod 501, and mounting rod 501 is fixedly installed at the inside bottom of test box 2, the top of mounting rod 501 is fixedly installed with lower die plate 502, the top of lower die plate 502 both sides is fixedly installed with guide rod 504, and upper die plate 505 is slidably installed on the surface of guide rod 504, recess 503 is fixedly provided in the center position of the top of lower die plate 502 and the bottom of upper die plate 505, and anti -drop structure 6 is equipped in lower die plate 502 and upper die plate 505, and anti -drop structure 6 includes adjusting rod 601, two adjusting rods 601 respectively penetrate the center position of lower die plate 502 and upper die plate 505, adjusting rod 601 is connected between lower die plate 502 and upper die plate 505 by screw thread, and adjusting air bag 602 is fixedly installed on the surface of adjusting rod 601.

[0028] In the embodiment, one end of adjusting air bag 602 is fixedly connected with adjusting rod 601, and the other end is in close contact with recess 503.

[0029] When adjusting rod 601 moves down, adjusting air bag 602 can be deformed, so as to become circular ring structure, and spring 8 can be fixed, to avoid horizontal displacement of spring 8.

[0030] In the embodiment, mounting rod 501 has four, and is located at the bottom of lower die plate 502 four corner positions.

[0031] The mounting rod 501 plays a supporting role, can better support the lower mold plate 502, and makes the lower mold plate 502 more stable.

[0032] In the embodiment, a connecting structure 7 is arranged between the adjusting rod 601, the upper mold plate 505 and the compression ring 4, the connecting structure 7 comprises a connecting seat 702, the connecting seat 702 is fixedly installed at the top center position of the upper mold plate 505, the surface of the mounting ring 701 is provided with connecting holes one 703 on both sides, the surface of the compression ring 4 is provided with connecting holes two 704 on both sides, the connecting holes one 703 and the connecting holes two 704 are slidably connected with a connecting rod 705, and the surface of the adjusting rod 601 is provided with two mounting rings 701 which are rotationally installed at the top end.

[0033] The connecting structure 7 can fix the tension spring 9, so that the fatigue test of the tension spring 9 can be performed, and the adaptability of the device is effectively improved.

[0034] In the embodiment, the compression ring 4 is internally provided with an opening, and the opening size is adaptively matched with the connecting seat 702.

[0035] The compression ring 4 will not be disturbed when performing the fatigue test on the upper mold plate 505, and the compression ring 4 and the connecting seat 702 can be tightly connected.

[0036] In the embodiment, the adjusting rod 601 penetrates through the connecting seat 702 and is slidably connected with the connecting seat 702.

[0037] The connecting seat 702 will not affect the work of the adjusting rod 601, and the adjusting rod 601 will not be disturbed by the connecting seat 702 when being displaced.

[0038] In the embodiment, the mounting ring 701 is a semicircular structure and is internally provided with an opening.

[0039] The mounting ring 701 can fix the tension spring 9 through the opening, so that the fatigue test of the tension spring 9 can be performed without replacing the mold plate.

[0040] It needs to be explained that the utility model discloses a fatigue test fixing device, when using, the spring 8 to be measured is placed into the recess 503 in the lower mould plate 502, the adjusting rod 601 is rotated, the adjusting air bag 602 is compressed, the adjusting air bag 602 is deformed, the inside lower end of the spring 8 is extruded, the horizontal displacement of the spring 8 is prevented, the displacement distance of the adjusting rod 601 can make the adjusting air bag 602 produce different deformation, so that the spring 8 of different diameters can be adapted, the upper mould plate 505 is placed on the guide rod 504, the lower mould plate 502 and the upper mould plate 505 are fixed to the spring 8 under the action of gravity, the upper end of the spring 8 is also fixed by rotating the adjusting rod 601, so that the spring 8 is prevented from running off, the cylinder 3 is started by the controller 1, the compression ring 4 is intermittently extruded to the upper mould, so that the fatigue test of the spring 8 can be carried out.

[0041] When the fatigue test of the tension spring 9 needs to be carried out, the compression ring 4 is in close contact with the upper mould plate 505 by the cylinder 3, the compression ring 4 and the connecting seat 702 are connected by inserting the connecting rod 705 into the connecting hole one 703 and the connecting hole two 704, the two ends of the tension spring 9 are connected in the mounting ring 701 by rotating the mounting ring 701 on the surface top end of the adjusting rod 601, the cylinder 3 is started, so that the tension spring 9 is in the fixed state, the intermittent movement of the upper mould plate 505 can be realized by the working of the cylinder 3, so that the fatigue test of the tension spring 9 can be carried out.

[0042] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by the person skilled in the art that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification only illustrate the principle of the utility model, under the premise of not departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall into the scope of the utility model claimed for protection. The scope of protection of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A fatigue test fixture, comprising a controller (1) and a test box (2), wherein a cylinder (3) is fixedly mounted on the top of the test box (2), and the cylinder (3) passes through the top of the test box (2) and is fixedly connected to a pressure ring (4), characterized in that: A fixing assembly (5) is provided in the test box (2); The fixing assembly (5) includes a mounting rod (501), the mounting rod (501) is fixedly mounted on the inner bottom end of the test box (2), a lower template (502) is fixedly mounted on the top end of the mounting rod (501), guide rods (504) are fixedly mounted on both sides of the top end of the lower template (502), an upper template (505) is slidably mounted on the surface of the guide rod (504), a groove (503) is fixedly opened at the top end of the lower template (502) and the center position of the bottom end of the upper template (505), and the lower template An anti-slip structure (6) is provided in the lower template (502) and the upper template (505), and the anti-slip structure (6) includes an adjusting rod (601). The two adjusting rods (601) respectively pass through the center positions of the lower template (502) and the upper template (505). The adjusting rod (601) is connected to the lower template (502) and the upper template (505) through threads. An adjusting airbag (602) is fixedly installed on the surface of the adjusting rod (601), and two rotatably installed mounting rings (701) are installed on the top of the surface of the adjusting rod (601).

2. A fatigue test fixture according to claim 1, characterized in that: One end of the regulating airbag (602) is fixedly connected to the regulating rod (601), and the other end is in close contact with the groove (503).

3. A fatigue test fixture according to claim 1, characterized in that: There are four mounting rods (501), which are located at the four corners of the bottom end of the lower template (502).

4. A fatigue test fixture according to claim 1, characterized in that: A connecting structure (7) is provided between the adjusting rod (601), the upper template (505) and the pressure ring (4), wherein the connecting structure (7) comprises a connecting seat (702), wherein the connecting seat (702) is fixedly installed at the top center position of the upper template (505), a connecting hole 1 (703) is provided on both sides of the surface of the mounting ring (701), and a connecting hole 2 (704) is provided on both sides of the surface of the pressure ring (4), and a connecting rod (705) is slidably connected in the connecting hole 1 (703) and the connecting hole 2 (704).

5. A fatigue test fixture according to claim 4, characterized in that: The pressure ring (4) is provided with an opening inside, and the size of the opening is adaptively matched with the connecting seat (702).

6. A fatigue test fixture according to claim 4, characterized in that: The adjusting rod (601) passes through the connecting seat (702) and is slidably connected to the connecting seat (702).

7. A fatigue test fixture according to claim 4, characterized in that: The mounting ring (701) is a semicircular structure with an opening in the center.

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