High-frequency fatigue testing machine with adjustable clamp

Abstract

The utility model relates to the technical field of engineering testing, in particular to a high-frequency fatigue testing machine with an adjustable clamp, which comprises a base, the lower end of the base is fixedly connected with an electromagnetic vibration exciter, a column body is fixedly connected in the base in a penetrating manner, and the output end of the electromagnetic vibration exciter is fixedly connected with the end part of the column body. Cylinders are fixedly connected to the upper end of the base and the lower end of the upper plate correspondingly, and a plurality of clamping blocks are distributed on the inner walls of the cylinders in an annular array mode. An upper plate is pushed by a hydraulic cylinder to slide upwards, then the lower end of a material is placed in a cylinder arranged at the upper end of a base, the upper plate is pushed by the hydraulic cylinder to slide downwards, so that the upper end of the material slides into a cylinder arranged at the lower end of the upper plate, an annular plate is manually rotated, a gear block drives a gear to rotate, and a screw rod is driven by the gear to rotate; and through the multiple clamping blocks which slide in a matched mode and the upper plate which slides in the longitudinal direction, the materials of different sizes can be clamped and fixed conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering testing, in particular to a high-frequency fatigue testing machine with an adjustable fixture. Background Technique

[0002] The high-frequency fatigue testing machine simulates the high-frequency vibration and fatigue damage suffered by materials during actual use by applying high-frequency cyclic loads to specimens, so as to evaluate the fatigue performance, fatigue life, crack propagation and other characteristics of materials. It is widely used in the fields of aviation, aerospace, automotive, rail transit, energy, etc., and is of great significance for ensuring product quality and safety.

[0003] Most of the existing high-frequency fatigue testing machines adopt a fixed fixture design, which means that they cannot easily adapt to specimens of different sizes and shapes. This design limits the versatility and flexibility of the testing machine, making it necessary for users to replace the entire set of fixtures when testing multiple materials or specimens, increasing the testing cost and time. Content of the Utility Model

[0004] The purpose of the utility model is to provide a high-frequency fatigue testing machine with an adjustable fixture, and through this device, the effect of facilitating the clamping of materials of different sizes is realized, so as to solve the problem that it is not convenient to clamp materials of different sizes in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A high-frequency fatigue testing machine with an adjustable fixture, including a base, an electromagnetic vibrator is fixedly connected to the lower end of the base, a cylinder is fixedly connected through the base, the output end of the electromagnetic vibrator is fixedly connected to the end of the cylinder, a plurality of hydraulic cylinders are fixedly connected to the upper end of the base, an upper plate is fixedly connected to the upper ends of the plurality of hydraulic cylinders together, cylinder columns are fixedly connected to both the upper end of the base and the lower end of the upper plate, and a plurality of clamping blocks are arranged in an annular array on the inner wall of the cylinder column.

[0007] Preferably, a screw rod is rotatably connected inside the cylinder column, the screw rod is in threaded rotation connection with the clamping block, and a gear is fixedly connected to the end of the screw rod.

[0008] Preferably, an annular plate is rotatably connected to the side wall of the cylinder column, a groove is arranged on the inner wall of the annular plate, a plurality of tooth blocks are arranged at the bottom of the groove, the plurality of tooth blocks are arranged in an annular array, and the side wall of the gear is meshed with the tooth blocks.

[0009] Preferably, a plurality of convex blocks are arranged in an annular array on the side wall of the annular plate, a rod body is slidably connected through the convex block, and a plate is fixedly connected to the end of the rod body.

[0010] Preferably, a spring is fixedly connected to the upper end of the bump, the end of the spring is fixedly connected to the plate, and the spring is sleeved outside the rod body.

[0011] Preferably, clamping grooves are annularly and arrayedly distributed at the upper end of the base and the lower end of the upper plate, and the rod body is slidably connected to the clamping grooves.

[0012] Compared with the prior art, the advantages of the present utility model are as follows:

[0013] 1. The hydraulic cylinder is used to push the upper plate to slide upward. Then, the operator places the lower end of the material into the cylinder column arranged at the upper end of the base. At the same time, the lower end of the material is attached to the upper end of the column body. The hydraulic cylinder is used to push the upper plate to slide downward, so that the upper end of the material slides into the cylinder column arranged at the lower end of the upper plate. By manually rotating the ring plate, the toothed block drives the gear to rotate. The gear drives the screw rod to rotate, so that the clamping block slides horizontally, thereby clamping and fixing the material. At the same time, through a plurality of clamping blocks that cooperate with each other and slide and the upper plate that slides longitudinally, it is convenient to clamp and fix materials of different sizes.

[0014] 2. After the material is clamped and fixed, the elastic force of the spring is used to pull the plate, so that the plate drives the rod body to slide downward. The lower end of the rod body slides into the clamping groove. The cooperation between the rod body and the clamping groove limits the ring plate, thereby preventing the ring plate from rotating during the fatigue test of the material, resulting in loosening of the clamping block on the material and affecting the accuracy of the fatigue test of the material. Description of the Drawings

[0015] Figure 1 It is a front view external structure schematic diagram of a high-frequency fatigue testing machine with an adjustable fixture proposed by the present utility model.

[0016] Figure 2 It is a side view sectional structure schematic diagram of a high-frequency fatigue testing machine with an adjustable fixture proposed by the present utility model.

[0017] Figure 3 It is an external structure schematic diagram of the ring plate of a high-frequency fatigue testing machine with an adjustable fixture proposed by the present utility model.

[0018] In the figure: 1 base, 2 electromagnetic vibrator, 3 column body, 4 cylinder column, 5 clamping block, 6 ring plate, 7 groove, 8 toothed block, 9 screw rod, 10 gear, 11 bump, 12 rod body, 13 plate, 14 spring, 15 clamping groove, 16 hydraulic cylinder, 17 upper plate. Detailed Embodiment

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0020] Reference Figures 1-3 Figures 1-3 , a high-frequency fatigue testing machine with an adjustable fixture, includes a base 1. An electromagnetic vibrator 2 is fixedly connected to the lower end of the base 1. A column 3 is fixedly connected through the interior of the base 1. The output end of the electromagnetic vibrator 2 is fixedly connected to the end of the column 3. A plurality of hydraulic cylinders 16 are fixedly connected to the upper end of the base 1. An upper plate 17 is fixedly connected to the upper ends of the plurality of hydraulic cylinders 16. Cylindrical columns 4 are fixedly connected to both the upper end of the base 1 and the lower end of the upper plate 17. A plurality of clamping blocks 5 are arranged in a circular array on the inner wall of the cylindrical column 4. By pushing the upper plate 17 to slide upward through the hydraulic cylinder 16, then the operator places the lower end of the material inside the cylindrical column 4 provided at the upper end of the base 1. At the same time, the lower end of the material is attached to the upper end of the column 3. By pushing the upper plate 17 to slide downward through the hydraulic cylinder 16, the upper end of the material slides into the cylindrical column 4 provided at the lower end of the upper plate 17. Then the plurality of clamping blocks 5 slide inside the cylindrical column 4, thereby clamping and fixing the material. After the material is clamped and fixed, the electromagnetic vibrator 2 operates to generate vibration, and the vibration is transmitted to the material through the column 3, thereby performing a fatigue test on the material.

[0021] A screw rod 9 is rotatably connected inside the cylindrical column 4. The screw rod 9 is in threaded rotation connection with the clamping block 5. A gear 10 is fixedly connected to the end of the screw rod 9. By driving the screw rod 9 to rotate through the gear 10, the clamping block 5 slides horizontally.

[0022] A ring plate 6 is rotatably connected to the side wall of the cylindrical column 4. A groove 7 is provided on the inner wall of the ring plate 6. A plurality of tooth blocks 8 are provided at the bottom of the groove 7. The plurality of tooth blocks 8 are arranged in a circular array. The side wall of the gear 10 meshes with the tooth blocks 8. By manually rotating the ring plate 6, the tooth blocks 8 drive the gear 10 to rotate.

[0023] A plurality of convex blocks 11 are arranged in a circular array on the side wall of the ring plate 6. A rod body 12 is slidably connected through the interior of the convex block 11. A plate 13 is fixedly connected to the end of the rod body 12. The rod body 12 is limited by the provided plate 13.

[0024] A spring 14 is fixedly connected to the upper end of the convex block 11. The end of the spring 14 is fixedly connected to the plate 13. The spring 14 is sleeved outside the rod body 12. By the elasticity of the spring 14, the plate 13 is pulled, so that the plate 13 drives the rod body 12 to slide downward.

[0025] Card slots 15 are arranged in a circular array on both the upper end of the base 1 and the lower end of the upper plate 17. The rod body 12 is slidably connected to the card slots 15. After the material is clamped and fixed, the ring plate 6 is limited by the cooperation between the rod body 12 and the card slots 15.

[0026] In the present utility model, the hydraulic cylinder 16 is used to push the upper plate 17 to slide upward. Then, the operator places the lower end of the material inside the cylinder column 4 provided at the upper end of the base 1. At the same time, the lower end of the material is in contact with the upper end of the column body 3. The hydraulic cylinder 16 is used to push the upper plate 17 to slide downward, so that the upper end of the material slides into the cylinder column 4 provided at the lower end of the upper plate 17. By manually rotating the ring plate 6, the toothed block 8 drives the gear 10 to rotate. The gear 10 drives the screw rod 9 to rotate, so that the clamping block 5 slides horizontally, thereby clamping and fixing the material.

[0027] After the material is clamped and fixed, the elastic force of the spring 14 is used to pull the plate 13, so that the plate 13 drives the rod body 12 to slide downward. The lower end of the rod body 12 slides into the clamping groove 15. The cooperation between the rod body 12 and the clamping groove 15 limits the ring plate 6. The electromagnetic vibrator 2 operates to generate vibration, and the vibration is transmitted to the material through the column body 3, thereby performing a fatigue test on the material.

[0028] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent replacements or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A high-frequency fatigue testing machine with an adjustable fixture, characterized in that, It includes a base (1), a electromagnetic vibrator (2) is fixedly connected to the lower end of the base (1), a cylinder (3) is fixedly connected through the interior of the base (1), the output end of the electromagnetic vibrator (2) is fixedly connected to the end of the cylinder (3), a plurality of hydraulic cylinders (16) are fixedly connected to the upper end of the base (1), an upper plate (17) is fixedly connected to the upper ends of the plurality of hydraulic cylinders (16) together, cylinder columns (4) are fixedly connected to both the upper end of the base (1) and the lower end of the upper plate (17), and a plurality of clamping blocks (5) are arranged in a circular array on the inner wall of the cylinder column (4).

2. The high-frequency fatigue testing machine with an adjustable fixture according to claim 1, characterized in that, A screw rod (9) is rotatably connected to the interior of the cylinder column (4), the screw rod (9) is in threaded rotation connection with the clamping blocks (5), and a gear (10) is fixedly connected to the end of the screw rod (9).

3. The high-frequency fatigue testing machine with an adjustable fixture according to claim 2, characterized in that, A ring plate (6) is rotatably connected to the side wall of the cylinder column (4), a groove (7) is arranged on the inner wall of the ring plate (6), a plurality of tooth blocks (8) are arranged at the bottom of the groove (7), the plurality of tooth blocks (8) are arranged in a circular array, and the side wall of the gear (10) is meshed with the tooth blocks (8).

4. The high-frequency fatigue testing machine with an adjustable fixture according to claim 3, characterized in that, A plurality of convex blocks (11) are arranged in a circular array on the side wall of the ring plate (6), a rod body (12) is slidably connected through the interior of the convex block (11), and a plate (13) is fixedly connected to the end of the rod body (12).

5. The high-frequency fatigue testing machine with an adjustable fixture according to claim 4, characterized in that, A spring (14) is fixedly connected to the upper end of the convex block (11), the end of the spring (14) is fixedly connected to the plate (13), and the spring (14) is sleeved outside the rod body (12).

6. The high-frequency fatigue testing machine with an adjustable fixture according to claim 4, characterized in that, Card slots (15) are arranged in a circular array on both the upper end of the base (1) and the lower end of the upper plate (17), and the rod body (12) is slidably connected to the card slots (15).

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