A low temperature dynamic fatigue testing machine

Abstract

The utility model discloses a low temperature dynamic fatigue testing machine relates to test equipment technical field, including testing machine box, the top of testing machine box is linked with hydraulic telescopic link, and the telescopic end of hydraulic telescopic link is linked with crosspiece, and the top of testing machine box test bin is linked with top plate, and the bottom of top plate and the top of crosspiece all are linked with support, and the device can drive moving block displacement and compress spring through pulling out the protruding block, to place the test product between moving block and clamping block easily, and the spring automatic reset pushes moving block to realize the pre -fixing of product after loosening protruding block, and the clamping process is simplified significantly, and the operation difficulty is reduced, and then through the adjusting bolt drive trapezoidal block movement, utilize the slope and make two clamping blocks synchronous reverse movement, push moving block and end block closely and abut to compress spring completely, and realize two -way fast locking of test product, and the clamping efficiency is improved greatly.

Description

Technical Field

[0001] This utility model belongs to the field of testing equipment technology, and specifically relates to a low-temperature dynamic fatigue testing machine. Background Technology

[0002] The low-temperature dynamic fatigue testing machine is a professional device used to test the fatigue resistance of materials or structures in low-temperature environments. It can dynamically load the specimen under simulated low-temperature conditions and evaluate its durability under cyclic loading. In the process of testing the mechanical properties of materials, the clamping and fixing of the test specimen is a key factor affecting the accuracy and efficiency of the test.

[0003] Traditional clamps typically use bolts to tighten the clamping blocks, which is cumbersome to operate and increases the difficulty of clamping, resulting in low testing efficiency. In addition, they lack pre-fixation function, and the sample is prone to shifting before formal locking. To solve the above problems, we provide a low-temperature dynamic fatigue testing machine. Utility Model Content

[0004] The purpose of this invention is to provide a low-temperature dynamic fatigue testing machine to solve the problems mentioned in the background art. Traditional clamps usually use bolts to tighten the clamping blocks, which is cumbersome to operate, increases the difficulty of clamping, and leads to low testing efficiency. At the same time, they lack pre-fixing function, and the sample is easy to shift before formal locking.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a low-temperature dynamic fatigue testing machine, including a testing machine box, a hydraulic telescopic rod is bolted to the top of the testing machine box, a crossbar is bolted to the telescopic end of the hydraulic telescopic rod, a top plate is bolted to the top of the testing chamber of the testing machine box, and brackets are bolted to the bottom of the top plate and the top of the crossbar, and a clamping mechanism is provided inside the bracket. The clamping mechanism includes a fixed block, an adjusting bolt is threaded inside the fixed block, a trapezoidal block is sleeved on the surface of the adjusting bolt, clamping blocks are slidably connected to the inclined surfaces on both sides of the trapezoidal block, an end block is bolted to the surface of the fixed block, a sliding rod is slidably sleeved inside the end block, a moving block is bolted to one end of the sliding rod, and a spring is sleeved on the surface of the sliding rod.

[0006] Preferably, the inside of the bracket is bolted to the fixed block, one side of the end block has a round hole adapted to the spring, and both the front and back of the movable block are bolted with protrusions, and the surface of the protrusions is provided with anti-slip texture.

[0007] Preferably, a round rod is bolted to both the front and back of the trapezoidal block, and a through groove adapted to the round rod is opened inside the bracket, with the surface of the round rod slidably connected to the through groove.

[0008] Preferably, the equipment compartment of the test chamber is bolted with a refrigeration device, the cold air outlet of the refrigeration device is connected to an air duct, the test compartment of the test chamber is provided with an air outlet, and the other end of the air duct is connected to the air outlet through a guide shroud.

[0009] Preferably, the front of the test chamber is hinged with a door, a female buckle is bolted to one side of the door, and a male buckle that matches the female buckle is bolted to one side of the test chamber.

[0010] This utility model has the following beneficial effects: This device allows the moving block to shift and compress the spring by pulling the protrusion, thus easily placing the test product between the moving block and the clamping block. After releasing the protrusion, the spring automatically resets and pushes the moving block to pre-fix the product, significantly simplifying the clamping process and reducing the difficulty of operation. Then, by adjusting the bolt, the trapezoidal block is moved, and the inclined plane makes the two clamping blocks move synchronously in opposite directions, which not only pushes the moving block and the end block to tightly abut against each other to fully compress the spring, but also achieves bidirectional and rapid locking of the test product, greatly improving the clamping efficiency. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the box door opening of this utility model; Figure 3 This is a front sectional view of the box door of this utility model when it is open; Figure 4 This is a three-dimensional schematic diagram of a partial structure of this utility model; Figure 5 This is a three-dimensional schematic diagram of a partial structure of this utility model; Figure 6 This is an exploded view of a partial structure of this utility model; Figure 7 This is a three-dimensional schematic diagram of a partial structure of this utility model.

[0012] Reference numerals: 1. Test chamber; 2. Hydraulic telescopic rod; 3. Horizontal frame; 4. Top plate; 5. Support; 6. Clamping mechanism; 61. Fixing block; 62. Adjusting bolt; 63. Trapezoidal block; 64. Clamping block; 65. End block; 66. Sliding rod; 67. Moving block; 68. Spring; 7. Round rod; 8. Through groove; 9. Refrigeration device; 10. Air duct; 11. Air outlet; 12. Chamber door; 13. Female buckle; 14. Female buckle. Detailed Implementation

[0013] The present invention will be further described in detail below with reference to the accompanying drawings.

[0014] Example 1:

[0015] refer to Figure 1-7 A low-temperature dynamic fatigue testing machine includes a test chamber 1, a hydraulic telescopic rod 2 is bolted to the top of the test chamber 1, a crossbeam 3 is bolted to the telescopic end of the hydraulic telescopic rod 2, a top plate 4 is bolted to the top of the test chamber of the test chamber 1, and brackets 5 are bolted to the bottom of the top plate 4 and the top of the crossbeam 3. A clamping mechanism 6 is provided inside the brackets 5. The clamping mechanism 6 includes a fixed block 61, an adjusting bolt 62 is threadedly connected to the inside of the fixed block 61, a trapezoidal block 63 is sleeved on the surface of the adjusting bolt 62, clamping blocks 64 are slidably connected to the inclined surfaces on both sides of the trapezoidal block 63, an end block 65 is bolted to the surface of the fixed block 61, a slide rod 66 is slidably sleeved inside the end block 65, a moving block 67 is bolted to one end of the slide rod 66, and a spring 68 is sleeved on the surface of the slide rod 66.

[0016] Specifically, the telescopic end of the hydraulic telescopic rod 2 extends into the interior of the test chamber of the test chamber 1. The top plate 4 has a through hole for the telescopic end of the hydraulic telescopic rod 2. The fixed block 61 has a threaded hole for the adjusting bolt 62. The trapezoidal block 63 has sliders fixedly connected to both sides. The clamping block 64 has a slope for the trapezoidal block 63 on one side. The slope of the trapezoidal block 63 has a groove for the slider. The clamping block 64 slides on one side of the trapezoidal block 63 through the groove. The end block 65 has a sliding hole for the sliding rod 66. The hydraulic telescopic rod 2 can drive the crossbeam 3 to perform a fatigue test on the test product by tensile reset.

[0017] refer to Figure 6 The bracket 5 is bolted to the fixed block 61. One side of the end block 65 has a round hole that matches the spring 68. By setting the round hole, the spring 68 can be easily compressed into its interior. The front and back of the moving block 67 are bolted with protrusions, and the surface of the protrusions is provided with anti-slip texture. By setting the protrusions, the moving block 67 can be easily pulled, and by setting the anti-slip texture, it can also play an anti-slip role.

[0018] refer to Figure 1 The trapezoidal block 63 is bolted with round rods 7 on both the front and back sides. The bracket 5 has a through groove 8 that matches the round rod 7 inside. The surface of the round rod 7 is slidably connected to the through groove 8. By setting the round rod 7 and the through groove 8, the trapezoidal block 63 can move up and down stably.

[0019] refer to Figure 3 The equipment compartment of the test chamber 1 is bolted with a refrigeration device 9. By setting the refrigeration device 9, the test chamber of the test chamber 1 is kept at a low temperature. The cold air outlet of the refrigeration device 9 is connected to the air duct 10. The test chamber of the test chamber 1 is provided with an air outlet 11. The other end of the air duct 10 is connected to the air outlet 11 through a guide hood. The guide hood can be used in conjunction with the air outlet 11.

[0020] refer to Figure 1The front of the test chamber 1 is hinged with a door 12. A female buckle 13 is bolted to one side of the door 12, and a male buckle 14 that matches the female buckle 13 is bolted to one side of the test chamber 1. By setting the female buckle 13 and the male buckle 14, it is easy to close and lock the door 12.

[0021] Brief description of the usage process: The user can pull the protrusion to move the moving block 67. Then, the moving block 67 drives the slide rod 66 to slide inside the end block 65. At the same time, the moving block 67 compresses the spring 68. Then, place one end of the test product between the moving block 67 and the clamping block 64. Then, release the protrusion to allow the spring 68 to return to its original position and drive the moving block 67 to pre-fix the test product. Then, turn the adjusting bolt 62 to move the trapezoidal block 63. At the same time, the trapezoidal block 63 drives the round rod 7 to slide inside the through groove 8. The trapezoidal block 63 pushes the two clamping blocks 64 to move in opposite directions through the inclined surface. At the same time, the clamping blocks 64 push the moving block 67 to abut against the end block 65, so that the spring 68 is compressed into the round hole. This can effectively facilitate the pre-fixation and quick clamping of the test product.

[0022] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A low-temperature dynamic fatigue testing machine, comprising a testing chamber (1), wherein a hydraulic telescopic rod (2) is bolted to the top of the testing chamber (1), a crossbar (3) is bolted to the telescopic end of the hydraulic telescopic rod (2), and a top plate (4) is bolted to the top of the testing chamber of the testing chamber (1), characterized in that: The bottom of the top plate (4) and the top of the cross frame (3) are both bolted with brackets (5), and the inside of the brackets (5) is provided with a clamping mechanism (6). The clamping mechanism (6) includes a fixed block (61), an adjusting bolt (62) is threaded inside the fixed block (61), a trapezoidal block (63) is sleeved on the surface of the adjusting bolt (62), clamping blocks (64) are slidably connected to the inclined surfaces on both sides of the trapezoidal block (63), an end block (65) is bolted to the surface of the fixed block (61), a slide rod (66) is slidably sleeved inside the end block (65), a moving block (67) is bolted to one end of the slide rod (66), and a spring (68) is sleeved on the surface of the slide rod (66).

2. The low-temperature dynamic fatigue testing machine according to claim 1, characterized in that: The bracket (5) is bolted to the fixed block (61) inside. One side of the end block (65) is provided with a round hole that matches the spring (68). The front and back of the moving block (67) are both bolted with protrusions, and the surface of the protrusions is provided with anti-slip texture.

3. The low-temperature dynamic fatigue testing machine according to claim 1, characterized in that: The trapezoidal block (63) has a round rod (7) bolted to both the front and back sides. The bracket (5) has a through groove (8) that matches the round rod (7) inside. The surface of the round rod (7) is slidably connected to the through groove (8).

4. The low-temperature dynamic fatigue testing machine according to claim 1, characterized in that: The equipment compartment of the test chamber (1) is bolted with a refrigeration device (9), the cold air outlet of the refrigeration device (9) is connected to a duct (10), the test compartment of the test chamber (1) is provided with an air outlet (11), and the other end of the duct (10) is connected to the air outlet (11) through a guide shroud.

5. A low-temperature dynamic fatigue testing machine according to claim 1, characterized in that: The front of the test chamber (1) is hinged with a door (12), and a female buckle (13) is bolted to one side of the door (12). A female buckle (14) that matches the female buckle (13) is bolted to one side of the test chamber (1).

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