Blade fracture toughness test fixture

Abstract

The utility model discloses a blade fracture toughness test fixture, which relates to the fixture field, and comprises a pedestal, four corners of the top of the pedestal are fixedly connected with a top plate through vertical rods, the lower part of the top plate is provided with a pressing assembly for testing a blade, a channel is reserved in the pedestal, the side wall of the pedestal is fixedly connected with a motor, and the top of the pedestal is fixedly connected with the motor. And an output shaft of the motor is in transmission connection with a first threaded rod, the first threaded rod is rotationally connected with the channel, the outer ring of the first threaded rod is in threaded connection with a moving plate, and a splash-proof assembly is installed at the top of the moving plate. According to the utility model, the second threaded rod is twisted to drive the square block and the pressing block to move up and down, so that the blades with different thicknesses can be conveniently clamped and tested, meanwhile, the end walls of the blades with different lengths are clamped and limited through the opposite movement of the two arched frames, and the two end parts of the blades abut against the end walls of the arched frames; and it is ensured that the blade does not shift to affect the test result during processing.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of fixture, concretely relates to a blade fracture toughness test fixture. BACKGROUND

[0002] The main purpose of blade fracture toughness test is to evaluate the ability of blade material to resist crack formation and propagation when subjected to external force, and this test is crucial to ensure the reliability and durability of the blade during use.

[0003] When testing, the blade needs to be clamped, and the existing clamping device has the following problems when in use: the existing clamping device is mostly exposed, and when clamping the blade for testing, the blade may break during testing, causing debris to splash and affecting the safety of workers.

[0004] Therefore, it is necessary to invent a blade fracture toughness test fixture to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a blade fracture toughness test fixture to solve the problem of the existing clamping device being mostly exposed, which may cause the blade to break during testing, causing debris to splash and affecting the safety of workers.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme: a blade fracture toughness test fixture, including pedestal, the top four corners of the pedestal are fixedly connected with top plate through stand, and the lower part of the top plate is provided with a pressing assembly for testing the blade, the inside of the pedestal is reserved with a channel, the side wall of the pedestal is fixedly connected with a motor, and the output shaft of the motor is drivingly connected with a threaded rod one, the threaded rod one is rotatably connected with the channel, and the outer circle of the threaded rod one is threadedly connected with a moving plate, the top of the moving plate is provided with a splash-proof assembly, and the splash-proof assembly is provided with a clamping assembly.

[0007] Preferably, the pressing assembly comprises a gas cylinder embedded in the inside of the top plate, the lower end of the gas cylinder is fixedly connected with a horizontal plate, the lower end of the horizontal plate is fixedly connected with a pressing plate, and the inside of the horizontal plate is slidingly installed with an extension plate through a spring in the movable cavity, the gas cylinder drives the pressing plate to descend for testing the blade.

[0008] Preferably, the extension plate is provided with two pieces, and the two pieces of extension plate are symmetrically arranged on the left and right sides with the horizontal plate center axis as the symmetry axis, and the opposite end walls of the two pieces of extension plate are fixedly connected with the two ends of the spring;

[0009] The lower end of the two extension plates is provided with an inclined surface, and the extension plate is provided with a T-shaped structure, so that the total length of the extension plate can be adjusted, the device is suitable for clamping and testing blades with different lengths, and the fragments during the testing process cannot splash out and affect the workers.

[0010] Preferably, the outer ring of the threaded rod one is reserved with two sections of threads with different screw directions, the two moving plates are connected with the two sections of threads in a threaded manner, and the outer walls of the two moving plates are attached to the inner walls of the channels and are connected in a sliding manner.

[0011] Preferably, the splash-proof assembly comprises a vertical plate fixedly connected with the surface of the pedestal, and the internal cavity of the vertical plate is slidably connected with two symmetrically arranged horizontal arch-shaped frames, so that the testing of the blade is implemented in a closed environment.

[0012] Preferably, the clamping assembly comprises a vertical groove one reserved in the internal cavity of one of the arch-shaped frames, the internal cavity of the vertical groove one is slidably connected with a square block through a threaded rod two, the square block is fixedly connected with a pressing block, the pressing block and a fixed block are clamped and arranged with the blade to be tested, and the fixed block is fixedly connected with the opposite end walls of the two arch-shaped frames, so as to facilitate clamping and processing of blades with different thicknesses.

[0013] Preferably, the upper and lower end walls of the square block are fixedly connected with baffles, the baffles are slidably connected with a vertical groove two, and the vertical groove two is communicated with the vertical groove one.

[0014] In the above technical solution, the technical effects and advantages of the utility model are provided:

[0015] 1. The utility model discloses a threaded rod two is twisted to drive the square block and the pressing block to realize the up-down movement of position, so as to facilitate the clamping test of blades with different thicknesses, and the opposite movement of the two arch-shaped frames clamps and limits the end walls of blades with different lengths, the two end portions of the blade abut against the end walls of the arch-shaped frame, so as to ensure that the blade does not shift during the working operation and affect the test result.

[0016] 2. Meanwhile, during the descending process of the extension plate, the two extension plates are inwardly contracted under the blocking force of the arch-shaped frame, and then the extension plate and the horizontal plate are completely and smoothly entered into the area surrounded by the two arch-shaped frames, so that the horizontal plate and the extension plate realize the closed treatment of the top of the working area, and the fragments during the working process of the blade are avoided from splashing. DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings needed in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments described in the utility model, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0018] Figure 1 It is the whole structure perspective view of the utility model;

[0019] Figure 2 It is the inside structure perspective view of the utility model's cross plate (partially cut state);

[0020] Figure 3 It is the inside structure perspective view of the utility model's whole structure (except top plate);

[0021] Figure 4 It is the inside structure perspective view of the utility model's arch frame (partially cut state).

[0022] Mark explanation:

[0023] 1, pedestal; 2, stand; 3, top plate; 4, down pressure assembly; 401, air cylinder; 402, cross plate; 403, extension plate; 404, spring; 405, movable cavity; 406, pressing plate; 5, channel; 6, motor; 7, threaded rod one; 8, moving plate; 9, splash-proof assembly; 901, vertical plate; 902, arch frame; 10, clamping assembly; 101, vertical groove one; 102, block; 103, pressing block; 104, fixed block; 105, threaded rod two; 106, baffle; 107, vertical groove two. Specific implementation

[0024] In order to make the technical personnel of the prior art better understand the technical scheme of the utility model, the utility model will be introduced in further detail below in conjunction with the drawings.

[0025] The utility model provides a kind of blade fracture toughness test fixture, as shown in Figures 1-4 It is the inside structure perspective view of the utility model's cross plate (partially cut state); It is the inside structure perspective view of the utility model's whole structure (except top plate); It is the inside structure perspective view of the utility model's arch frame (partially cut state).

[0026] Down pressure assembly 4 includes air cylinder 401 that is embeddedly installed in the inside of top plate 3, and the lower end of air cylinder 401 is fixedly connected with cross plate 402, the lower end of cross plate 402 is fixedly connected with pressing plate 406, and the movable cavity 405 in the inside of cross plate 402 is slidably installed with extension plate 403 in the inside, air cylinder 401 drives the descent of cross plate 402 to drive the descent of pressing plate 406 synchronously to test the blade.

[0027] The two extension plates 403 are symmetrically arranged with the center axis of the horizontal plate 402 as the symmetry axis, and the opposite end walls of the two extension plates 403 are fixedly connected with the two ends of the spring 404; the lower end of the two extension plates 403 is an inclined surface, and the extension plate 403 is a "T" shape, which ensures that the total length of the extension plate 403 can be adjusted. When the horizontal plate 402 drives the extension plate 403 to descend, the inclined surface of the lower end of the extension plate 403 with a longer unfolding length abuts against the two arched frames 902. In the process of descending of the extension plate 403, the two extension plates 403 are inwardly contracted by the force blocked by the arched frames 902, and then the extension plate 403 and the horizontal plate 402 completely and smoothly enter the area surrounded by the two arched frames 902. In this way, the horizontal plate 402 and the extension plate 403 realize the closed processing of the top of the working area, avoiding the splashing of debris during the blade operation.

[0028] To ensure the formation of the closed area, the outer circle of the threaded rod one 7 is reserved with two sections of threads with different screw directions, the two moving plates 8 are threadedly connected with the two sections of threads, and the outer walls of the two moving plates 8 are in close contact with the inner walls of the channel 5 and are slidably connected. The splash-proof assembly 9 includes a vertical plate 901 fixedly connected with the surface of the pedestal 1, and the inner cavity of the vertical plate 901 slidably connects two horizontally arranged arched frames 902, and the arched frames 902 are fixedly connected with the moving plates 8. In this way, when the motor 6 drives the threaded rod one 7 to rotate, the two arched frames 902 can move towards each other or move away from each other, so that the end walls of the two arched frames 902 are in contact with the end walls of the blades with different lengths and clamp and limit the blades, and the formation of the splash-proof area during the machining operation is facilitated.

[0029] To facilitate the clamping and testing of the blade, the clamping assembly 10 includes a vertical groove one 101 reserved in the inner side of one arched frame 902, and the inner side of the vertical groove one 101 is threadedly and slidably connected with a square block 102 through a threaded rod two 105, and the square block 102 is fixedly connected with a pressing block 103. The blade to be tested is clamped and installed between the pressing block 103 and a fixed block 104 fixedly connected with the opposite end walls of the two arched frames 902, so as to facilitate the clamping and machining of blades with different thicknesses. The upper and lower end walls of the square block 102 are fixedly connected with baffles 106, and the baffles 106 are slidably connected with a vertical groove two 107 which is in communication with the vertical groove one 101. The up-and-down movement of the square block 102 is realized by twisting the threaded rod two 105, so that the gap between the pressing block 103 and the fixed block 104 is adjusted, facilitating the clamping and testing of blades with different thicknesses. At the same time, the two ends of the blade are placed on the surfaces of the two fixed blocks 104, and the two ends of the blade abut against the end walls of the arched frames 902, so as to ensure that the blade will not be displaced during the machining operation and affect the test results.

[0030] Working principle: when using a blade fracture toughness test fixture, first twist the threaded rod two 105 so that the block 102 inside the vertical groove one 101 up and down movement drives the pressure block 103 to achieve the position of the up and down movement, in turn, the gap size between the pressure block 103 and the fixed block 104 is adjusted, so that the pressure block 103 and the corresponding position of the fixed block 104 can be conveniently clamped for testing of blades of different thickness, while the two ends of the blade are placed on the surface of the two fixed blocks 104, start the motor 6 to drive the threaded rod one 7 to rotate, the moving plate 8 connected with the threaded rod one 7 in different directions is driven to move towards or away from each other, so that the end wall of the two arch-shaped frames 902 is in contact with the end wall of the blade of different length and clamps the blade, the two ends of the blade are in contact with the end wall of the arch-shaped frame 902, which ensures that the blade will not be displaced during the operation and affect the test result, while the two extension plates 403 are blocked by the force of the arch-shaped frame 902 and move inward, and then the extension plate 403 is stretched to enter the area surrounded by the two arch-shaped frames 902, so that the horizontal plate 402 and the extension plate 403 realize the sealing treatment of the top of the operation area, avoid the splashing of the blade during the operation, and the fragments fall to the ground through the through slot 5 for subsequent cleaning and collection.

[0031] The above only describes some exemplary embodiments of the present application by way of illustration, without doubt, for ordinary skilled in the art, without departing from the spirit and scope of the present application, the described embodiments can be modified in various ways. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the present application.

Claims

1. A blade fracture toughness test jig comprising a base (1) characterised in that, The top four corners of the pedestal (1) are fixedly connected with the top plate (3) through the vertical rod (2), and the lower portion of the top plate (3) is provided with the downward pressing assembly (4) for testing the blade, the inside of the pedestal (1) is reserved with the channel (5), the side wall of the pedestal (1) is fixedly connected with the motor (6), and the output shaft of the motor (6) is drivingly connected with the threaded rod one (7), the threaded rod one (7) is rotatably connected with the channel (5), and the outer ring of the threaded rod one (7) is threadedly connected with the moving plate (8), the top of the moving plate (8) is provided with the splash-proof assembly (9), and the splash-proof assembly (9) is provided with the clamping assembly (10).

2. A blade fracture toughness test fixture according to claim 1, wherein, The downward pressing assembly (4) comprises the air cylinder (401) which is embeddedly installed in the inside of the top plate (3), the lower end of the air cylinder (401) is fixedly connected with the horizontal plate (402), the lower end of the horizontal plate (402) is fixedly connected with the pressing plate (406), and the movable cavity (405) in the inside of the horizontal plate (402) is slidably installed with the extension plate (403) through the spring (404).

3. A blade fracture toughness test fixture according to claim 2, wherein, The two extension plates (403) are symmetrically arranged on the left and right sides with the horizontal plate (402) as the symmetry axis, and the opposite end walls of the two extension plates (403) are fixedly connected with the two ends of the spring (404). The lower ends of the two extension plates (403) are inclined surfaces, and the extension plates (403) are "T"-shaped.

4. A blade fracture toughness test fixture according to claim 1, wherein, The outer ring of the threaded rod one (7) is reserved with two sections of threads with different screw directions, the two moving plates (8) are threadedly connected with the two sections of threads, and the outer walls of the two moving plates (8) are in close contact with the inner walls of the channel (5) and are slidably connected.

5. A blade fracture toughness test fixture according to claim 1 wherein, The splash-proof assembly (9) comprises the vertical plate (901) which is fixedly connected with the surface of the pedestal (1), and the inside of the vertical plate (901) is slidably connected with the two horizontally-arched frames (902) which are symmetrically arranged.

6. A blade fracture toughness test jig according to claim 5, wherein, The clamping assembly (10) comprises the vertical groove one (101) which is reserved in the inside of one of the horizontally-arched frames (902), the inside of the vertical groove one (101) is threadedly and slidably connected with the square block (102) through the threaded rod two (105), the square block (102) is fixedly connected with the pressing block (103), the pressing block (103) and the fixed block (104) are clampedly installed with the blade to be tested, and the fixed block (104) is fixedly connected with the opposite end walls of the two horizontally-arched frames (902).

7. A blade fracture toughness test jig according to claim 6, wherein, The upper and lower end walls of the square block (102) are fixedly connected with the baffles (106), the baffles (106) are slidably connected with the vertical groove two (107), and the vertical groove two (107) is in communication with the vertical groove one (101).

Images