Shearing test tool capable of being used in liquid nitrogen and liquid helium ultralow temperature environment

Abstract

The utility model discloses a shear test tool capable of being used in liquid nitrogen and liquid helium ultralow temperature environments, and relates to the technical field of tool equipment. The shear test tool capable of being used in the liquid nitrogen and liquid helium ultralow-temperature environment comprises a base, two material carrying frames are symmetrically arranged over the middle of the base, a shear plate is arranged between the two material carrying frames and located over the two material carrying frames, the shear test tool further comprises two supporting assemblies, and the two supporting assemblies are arranged on the base. The two supporting assemblies are arranged on the two sides of the middle position of the top surface of the base correspondingly, the two material carrying frames are connected with the middles of the top surfaces of the two supporting assemblies in a clamped mode correspondingly, and the supporting assemblies are used for limiting and supporting the material carrying frames; according to the utility model, the shearing test can be carried out on workpieces of different models, so that the convenience of the tool in use can be improved, the use range of the tool can be widened, and the use cost of the tool can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling equipment, in particular to a shear test tooling which can be used in liquid nitrogen and liquid helium ultra-low temperature environments. Background Art

[0002] A shear test fixture is a tool or device used to test the shear performance of materials or structures under stress. Shear testing is a common mechanical testing method used to evaluate the mechanical properties of materials or structures such as strength, stiffness and deformation under shear loading. However, when conducting shear tests in ultra-low temperature environments such as liquid nitrogen and liquid helium, specially designed shear test fixtures are required to ensure that the test equipment can still operate normally under extremely low temperature conditions and reliably obtain test data.

[0003] However, the existing shear test tooling that can be used in liquid nitrogen and liquid helium ultra-low temperature environments is not convenient for lifting and shearing workpieces of different models, which increases the cost of the workpiece shear test. Therefore, we propose a shear test tooling that can be used in liquid nitrogen and liquid helium ultra-low temperature environments to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a shear test fixture that can be used in liquid nitrogen and liquid helium ultra-low temperature environments, which solves the problem of inconvenience in lifting and shearing workpieces of different models, thereby increasing the cost of workpiece shear testing.

[0005] To achieve the above purpose, the utility model is implemented by the following technical solutions: a shear test fixture that can be used in a liquid nitrogen and liquid helium ultra-low temperature environment, comprising a base, two material carriers are symmetrically arranged just above the middle of the base, a shear plate is arranged between the two material carriers and just above them, and also includes:

[0006] A lifting assembly, wherein two lifting assemblies are provided, and the two lifting assemblies are respectively arranged on both sides of the middle position of the top surface of the base, and the two material carriers are respectively connected with the middle part of the top surface of the two lifting assemblies by snapping, and the lifting assembly is used for limiting the support of the material carriers;

[0007] Convex slide grooves, two of which are provided, and the two convex slide grooves are respectively opened on both sides of the top surface of the base, and the bottoms of both ends of the lifting component are respectively connected by the inner cavities of the two convex slide grooves, and the convex slide grooves are used to provide sliding support for the lifting component; and

[0008] A lifting assembly is arranged on the top surface of the shear plate, and is used to adjust the position height of the shear plate.

[0009] Preferably, the lifting assembly includes a vertical plate, a locking groove for locking the material carrier is provided in the middle of the top surface of the vertical plate, and positioning parts are provided on both sides of the bottom surface of the vertical plate, and the two positioning parts are respectively slidably connected to the two convex sliding grooves.

[0010] Preferably, the positioning portion comprises a convex sliding block disposed in the inner cavity of the convex sliding groove, and one side of the top surface of the convex sliding block is fixedly connected to one side of the bottom surface of the vertical plate;

[0011] A first screw hole is provided on one side of the top surface of the convex sliding block, and a first positioning screw is rotatably connected to the inner cavity of the first screw hole.

[0012] Preferably, pin holes are provided on both sides of the bottom surface of the vertical plate, pin columns are inserted into the inner cavities of the two pin holes, and the two pin columns are respectively connected to one side of the top surface of the convex sliding blocks on the two positioning parts.

[0013] Preferably, the outer wall surface of the vertical plate is provided with stabilizing wings in the middle, and the bottom ends of the two stabilizing wings are in contact with the top surface of the base.

[0014] Preferably, the lifting assembly comprises a pressing plate, and a seat for engaging the shear plate is provided in the middle of the bottom surface of the pressing plate;

[0015] The two side walls of the holder are each provided with a second screw hole, and the inner cavities of the two second screw holes are both rotatably connected with a second positioning screw;

[0016] A connecting frame is fixedly arranged in the middle of the top surface of the pressing plate.

[0017] Preferably, guide holes are opened at the four corners of the top surface of the pressure plate, guide columns are inserted into the inner cavities of the four guide holes, and the bottom ends of the four guide columns are connected to the top surface of the base.

[0018] Beneficial Effects

[0019] The utility model provides a shear test tool that can be used in liquid nitrogen and liquid helium ultra-low temperature environments. Compared with the prior art, it has the following beneficial effects:

[0020] The shear test fixture that can be used in liquid nitrogen and liquid helium ultra-low temperature environments can be fixed at a specified position through a base, and can also provide a space for opening two convex slides, so that the two convex slides can be installed on two lifting components, and then the two lifting components can be respectively engaged and installed on two carriers. When a shear test is required on a workpiece, the staff will first select a suitable type of carrier according to the shape of the workpiece, and then respectively plug the two carriers into the specified positions of the two lifting components, so that the lifting components can provide stable support for the carriers.

[0021] Then, by adjusting the position of the lifting component on the convex slide, the distance between the two material racks can be made convenient for subsequent shearing. Then the staff selects a suitable type of shear plate to install on the lifting component. Through the lifting component, an external drive device can be connected, and the shear plate can be driven synchronously under the operation of the drive device to shear the workpieces placed on the material racks in the ultra-low temperature environment of liquid nitrogen and liquid helium. By checking the driving force increased by the external drive device, the shear force of the workpiece in the ultra-low temperature environment of liquid nitrogen and liquid helium can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the side structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the lifting component of the utility model;

[0025] Figure 4 This is a schematic diagram of the explosion structure of the lifting component of the utility model;

[0026] Figure 5 This is a schematic diagram of the explosion structure of the positioning part of the utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the lifting component of the utility model.

[0028] In the figure: 1. base; 2. loading rack; 3. shear plate; 4. lifting assembly; 41. vertical plate; 42. engaging groove; 43. positioning portion; 431. convex slider; 432. first screw hole; 433. first positioning screw; 434. pin column; 44. stabilizing wing; 45. pin hole; 5. convex slide groove; 6. lifting assembly; 61. pressure plate; 62. holder; 63. second screw hole; 64. second positioning screw; 65. connecting frame; 66. guide hole; 67. guide column. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-2The utility model provides a technical solution: a shear test fixture that can be used in a liquid nitrogen and liquid helium ultra-low temperature environment, comprising a base 1, two loading racks 2 are symmetrically arranged just above the middle of the base 1, a shear plate 3 is arranged between the two loading racks 2 and just above them, and also comprises: a lifting assembly 4, two lifting assemblies 4 are arranged, the two lifting assemblies 4 are respectively arranged on both sides of the middle position of the top surface of the base 1, the two loading racks 2 are respectively connected by snapping with the middle of the top surfaces of the two lifting assemblies 4, the lifting assembly 4 is used to limit the support of the loading rack 2; a convex slide 5, two convex slides 5 are arranged, the two convex slides 5 are respectively opened on both sides of the top surface of the base 1, and the bottoms of the two ends of the lifting assembly 4 are respectively connected by the inner cavities of the two convex slides 5, and the convex slides 5 are used to provide sliding support for the lifting assembly 4; and a lifting assembly 6, the lifting assembly 6 is arranged on the top surface of the shear plate 3, and the lifting assembly 6 is used to adjust the position height of the shear plate 3;

[0031] Through the base 1, it can be fixed in the specified position and provide space for the two convex grooves 5, so that the two convex grooves 5 can be used to install the two lifting components 4, and then the two lifting components 4 can be respectively engaged and installed on the two loading racks 2. When it is necessary to perform a shear test on the workpiece, the staff will first select a suitable type of loading rack 2 according to the shape of the workpiece, and then insert the two loading racks 2 into the specified positions of the two lifting components 4 respectively, so that the lifting component 4 can provide a stable support for the loading rack 2, and then adjust the position of the lifting component 4 on the convex groove 5, so that the spacing between the two loading racks 2 is convenient for subsequent shearing, and then the staff will select a suitable type of shear plate 3 to be installed on the lifting component 6, and through the lifting component 6, it can not only be connected to an external driving device, but also can synchronously drive the shear plate 3 to shear the workpiece placed on the loading rack 2 in the ultra-low temperature environment of liquid nitrogen and liquid helium under the operation of the driving device, and by checking the driving force increased by the external driving device, the shear force of the workpiece in the ultra-low temperature environment of liquid nitrogen and liquid helium can be obtained.

[0032] See also Figure 1 , Figure 3-Figure 5The lifting component 4 includes a vertical plate 41, and a locking groove 42 for engaging the material carrier 2 is opened in the middle position of the top surface of the vertical plate 41. Positioning parts 43 are arranged on both sides of the bottom surface of the vertical plate 41. The two positioning parts 43 are respectively slidably connected with the two convex slide grooves 5. The positioning part 43 includes a convex sliding block 431 arranged in the inner cavity of the convex slide groove 5, and one side of the top surface of the convex sliding block 431 is fixedly connected to one side of the bottom surface of the vertical plate 41; a first screw hole 432 is opened on one side of the top surface of the convex sliding block 431, and a first positioning screw 433 is rotatably connected to the inner cavity of the first screw hole 432. Pin holes 45 are opened on both sides of the bottom surface of the vertical plate 41, and pins 434 are inserted in the inner cavities of the two pin holes 45. The two pins 434 are respectively connected to one side of the top surface of the convex sliding blocks 431 on the two positioning parts 43. The outer wall surface of the vertical plate 41 and the middle part are provided with stabilizing wings 44, and the bottom ends of the two stabilizing wings 44 are in contact with the top surface of the base 1;

[0033] The vertical plate 41 in the lifting assembly 4 can be placed on the top surface of the base 1 and can be mounted on the corresponding type of the material carrier 2 through the engaging groove 42, so as to provide a stable foundation for the material carrier 2, and can also be slidably installed in the two convex slide grooves 5 through the two convex slide blocks 431 respectively, and then the first positioning screw 433 in the inner cavity of the first screw hole 432 is rotated, so that the bottom end of the first positioning screw 433 can be against the bottom surface of the inner cavity of the convex slide groove 5, and then the convex slide block 431 can be engaged in the inner cavity of the convex slide groove 5, so as to achieve the purpose of installing and fixing the convex slide block 431. Pin holes 45 are provided on both sides of the surface of the part, and pin columns 434 are inserted into the inner cavities of the two pin holes 45. At the same time, the two pin columns 434 are respectively connected to one side of the top surface of the two convex sliders 431. Therefore, the pin holes 45 and the pin columns 434 can enhance the stability of the connection between the vertical plate 41 and the convex slider 431, thereby preventing the two from separating. The two stabilizing wings 44 can further enhance the stability of the vertical plate 41 placed on the top surface of the base 1. When shear tests are required for workpieces of different models, the position of the vertical plate 41 can be flexibly adjusted by loosening the first positioning screw 433, thereby increasing the range of use of the equipment.

[0034] See also Figure 1 , Figure 6 The lifting assembly 6 includes a pressing plate 61, and a base 62 for engaging the shear plate 3 is provided in the middle of the bottom surface of the pressing plate 61; second screw holes 63 are provided on both side walls of the base 62, and the inner cavities of the two second screw holes 63 are rotatably connected to second positioning screws 64; a connecting frame 65 is fixedly provided in the middle of the top surface of the pressing plate 61, and guide holes 66 are provided at the four corners of the top surface of the pressing plate 61, and guide columns 67 are inserted into the inner cavities of the four guide holes 66, and the bottom ends of the four guide columns 67 are connected to the top surface of the base 1;

[0035] Through the pressure plate 61 in the lifting assembly 6, the external driving device can be connected through the connecting frame 65, and the base 62 can be installed. Then, by rotating the second positioning screws 64 on the two second screw holes 63, the two second positioning screws 64 can be used to install and fix the shear plate 3 placed in the inner cavity of the base 62, thereby improving the stability of the shear plate 3 when used, so that the shear plate 3 can perform shear tests on the workpiece. Through the guide holes 66 and the guide columns 67, the pressure plate 61 can be guided up and down, thereby improving the stability of the lifting and lowering of the pressure plate 61, thereby ensuring the stability of the shearing of the workpiece by the shear plate 3.

[0036] During operation, the base 1 can be fixed at a designated position and provide a space for the two convex grooves 5, so that the two convex grooves 5 can be installed on the two lifting components 4, and then the two lifting components 4 can be respectively engaged and installed on the two material carriers 2. When a shear test is required on a workpiece, the staff will first select a suitable type of material carrier 2 according to the shape of the workpiece, and then respectively plug the two material carriers 2 into the designated positions of the two lifting components 4, so that the lifting components 4 can provide stable support for the material carriers 2, and then By adjusting the position of the lifting component 4 on the convex slide groove 5, the spacing between the two material carriers 2 can be made convenient for subsequent shearing. Then the staff selects a suitable type of shear plate 3 to be installed on the lifting component 6. Through the lifting component 6, an external driving device can be connected, and the shear plate 3 can be synchronously driven under the operation of the driving device to shear the workpiece placed on the material carrier 2 in the ultra-low temperature environment of liquid nitrogen and liquid helium. By checking the driving force increased by the external driving device, the shearing force of the workpiece in the ultra-low temperature environment of liquid nitrogen and liquid helium can be obtained.

[0037] The vertical plate 41 in the lifting assembly 4 can be placed on the top surface of the base 1 and can be mounted on the corresponding type of the material carrier 2 through the engaging groove 42, so as to provide a stable foundation for the material carrier 2, and can also be slidably installed in the two convex slide grooves 5 through the two convex slide blocks 431 respectively, and then the first positioning screw 433 in the inner cavity of the first screw hole 432 is rotated, so that the bottom end of the first positioning screw 433 can be against the bottom surface of the inner cavity of the convex slide groove 5, and then the convex slide block 431 can be engaged in the inner cavity of the convex slide groove 5, so as to achieve the purpose of installing and fixing the convex slide block 431. Pin holes 45 are provided on both sides of the surface of the part, and pin columns 434 are inserted into the inner cavities of the two pin holes 45. At the same time, the two pin columns 434 are respectively connected to one side of the top surface of the two convex sliders 431. Therefore, the pin holes 45 and the pin columns 434 can enhance the stability of the connection between the vertical plate 41 and the convex slider 431, thereby preventing the two from separating. The two stabilizing wings 44 can further enhance the stability of the vertical plate 41 placed on the top surface of the base 1. When shear tests are required for workpieces of different models, the position of the vertical plate 41 can be flexibly adjusted by loosening the first positioning screw 433, thereby increasing the range of use of the equipment.

[0038] Through the pressure plate 61 in the lifting assembly 6, the external driving device can be connected through the connecting frame 65, and the base 62 can be installed. Then, by rotating the second positioning screws 64 on the two second screw holes 63, the two second positioning screws 64 can be used to install and fix the shear plate 3 placed in the inner cavity of the base 62, thereby improving the stability of the shear plate 3 when used, so that the shear plate 3 can perform shear tests on the workpiece. Through the guide holes 66 and the guide columns 67, the pressure plate 61 can be guided up and down, thereby improving the stability of the lifting and lowering of the pressure plate 61, thereby ensuring the stability of the shearing of the workpiece by the shear plate 3.

[0039] In summary, the device can be used to perform shear tests on workpieces of different models, which can not only improve the convenience of using the tooling, but also increase its scope and cost of use.

[0040] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A shear test fixture that can be used in a liquid nitrogen and liquid helium ultra-low temperature environment, comprising a base (1), two material carriers (2) are symmetrically arranged just above the middle of the base (1), and a shear plate (3) is arranged between and just above the two material carriers (2), characterized in that: Also includes: A lifting assembly (4), wherein two lifting assemblies (4) are provided, and the two lifting assemblies (4) are respectively arranged on both sides of the middle position of the top surface of the base (1), and the two material carriers (2) are respectively connected to the middle of the top surfaces of the two lifting assemblies (4) by snapping, and the lifting assemblies (4) are used to limit the support of the material carriers (2); Convex slide grooves (5), two convex slide grooves (5) are provided, and the two convex slide grooves (5) are respectively opened on both sides of the top surface of the base (1), and the inner cavities of the two convex slide grooves (5) at the bottom of both ends of the supporting component (4) are respectively connected by sliding, and the convex slide grooves (5) are used to provide sliding support for the supporting component (4); as well as A lifting component (6), wherein the lifting component (6) is arranged on the top surface of the shear plate (3), and the lifting component (6) is used to adjust the position height of the shear plate (3).

2. The shear test fixture that can be used in liquid nitrogen and liquid helium ultra-low temperature environments according to claim 1, characterized in that: The lifting assembly (4) comprises a vertical plate (41), a locking groove (42) for locking the material carrier (2) is provided in the middle of the top surface of the vertical plate (41), and positioning parts (43) are provided on both sides of the bottom surface of the vertical plate (41), and the two positioning parts (43) are respectively slidably connected to the two convex sliding grooves (5).

3. The shear test fixture that can be used in liquid nitrogen and liquid helium ultra-low temperature environments according to claim 2, characterized in that: The positioning portion (43) comprises a convex sliding block (431) disposed in the inner cavity of the convex sliding groove (5), and one side of the top surface of the convex sliding block (431) is fixedly connected to one side of the bottom surface of the vertical plate (41); A first screw hole (432) is provided on one side of the top surface of the convex sliding block (431), and a first positioning screw (433) is rotatably connected to the inner cavity of the first screw hole (432).

4. The shear test fixture that can be used in liquid nitrogen and liquid helium ultra-low temperature environments according to claim 3, characterized in that: Pin holes (45) are provided on both sides of the bottom surface of the vertical plate (41), and pin columns (434) are inserted into the inner cavities of the two pin holes (45). The two pin columns (434) are respectively connected to one side of the top surface of the convex sliding blocks (431) on the two positioning parts (43).

5. The shear test fixture that can be used in liquid nitrogen and liquid helium ultra-low temperature environments according to claim 2, characterized in that: The outer wall surface of the vertical plate (41) is provided with stabilizing wings (44) in the middle, and the bottom ends of the two stabilizing wings (44) are in contact with the top surface of the base (1).

6. The shear test fixture that can be used in liquid nitrogen and liquid helium ultra-low temperature environments according to claim 1, characterized in that: The lifting assembly (6) comprises a pressing plate (61), and a clamping seat (62) for clamping the shear plate (3) is provided in the middle of the bottom surface of the pressing plate (61); Second screw holes (63) are provided on both side walls of the clamping seat (62), and the inner cavities of the two second screw holes (63) are rotatably connected with second positioning screws (64); A connecting frame (65) is fixedly arranged in the middle of the top surface of the pressing plate (61).

7. The shear test fixture that can be used in liquid nitrogen and liquid helium ultra-low temperature environments according to claim 6, characterized in that: Guide holes (66) are provided at the four corners of the top surface of the pressure plate (61), guide columns (67) are inserted into the inner cavities of the four guide holes (66), and the bottom ends of the four guide columns (67) are connected to the top surface of the base (1).

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