Fixing device for tensile test piece mold

Abstract

The utility model discloses a fixing device for a tensile test specimen mold, which relates to the technical field of tensile tests, and comprises a bottom groove shell and two groups of fixed clamping plates, the lower ends of the two groups of fixed clamping plates are fixedly connected with moving blocks, and the two groups of moving blocks are positioned in the bottom groove shell; reinforcing discs are arranged in the middles of the opposite sides of the two sets of fixing clamping plates, two sets of cambered surface grooves are formed in the two sets of fixing clamping plates, a first screw rod is arranged on the inner side of the bottom groove shell in a penetrating mode, clamping plates are arranged at the positions, close to the two sides, in the bottom groove shell, and the two sets of clamping plates are arranged on the periphery of the first screw rod in a sleeving mode; the fixing device has the advantages that the tensile test piece can be prevented from being separated from the fixing device in the tensile test process, the fastening and positioning functions of the tensile test piece are realized, the stability of the tensile test is improved, the combined mounting function of the fixing device is realized, and faulty parts can be conveniently and quickly replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of tensile testing, in particular to a fixing device for a tensile testing specimen mould. Background Art

[0002] Tensile test is a commonly used material mechanical property test method, which is used to evaluate important indicators such as tensile strength and fracture toughness of materials. When conducting a tensile test, it is usually necessary to stably fix the test specimen on the tensile testing machine through a fixture. The fixture for the tensile test specimen mold will greatly promote the development of the tensile test field, provide more reliable data support for material research and engineering applications, and promote the progress and development of material science and engineering technology.

[0003] After searching, the patent number is CN220625938U, which discloses a fixing device for a low-temperature tensile test specimen mold of a pavement sealant. The fixing method avoids the situation in which the test personnel's hands are fatigued due to the long pressing time after pouring the sealant, and avoids the situation in which the hands are burned by the sealant heated to a high temperature. The fixing method of simple rope bundling is avoided because the mold parts are easily displaced during the bundling process, and the need to repeatedly tighten and loosen the rope to correct the cavity size is avoided. The test personnel need to accumulate a certain amount of experience to produce a qualified specimen. However, when the existing fixing device for the tensile test specimen mold is used, the tensile test specimen is only simply positioned, so that the tensile test specimen is easily detached from the fixing device due to excessive tension, which greatly affects the tensile test process. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a fixing device for a tensile test specimen mold. When the existing fixing device for a tensile test specimen mold is in use, the tensile test specimen is only simply positioned, so that the tensile test specimen is easily separated from the fixing device due to excessive pulling force, which greatly affects the tensile test process.

[0005] In order to solve the above technical problems, the technical solution of the utility model is a fixing device for a tensile test specimen mold, including a bottom groove shell and two groups of fixed clamps, the lower ends of the two groups of fixed clamps are fixedly connected with moving blocks, and the two groups of moving blocks are located inside the bottom groove shell, reinforcement plates are provided at the middle positions of the opposite sides of the two groups of fixed clamps, and two groups of arc grooves are opened on the two groups of fixed clamps.

[0006] As a further solution of the utility model: a first screw is provided through the inner side of the bottom trough shell, and clamping plates are provided near both sides of the inside of the bottom trough shell, and two groups of the clamping plates are sleeved on the periphery of the first screw.

[0007] As a further solution of the utility model: a first threaded hole is penetrated through one side of the two groups of moving blocks, a symmetrical threaded section is arranged on the outer side of the first screw rod, and the two groups of moving blocks are threadedly connected to the first screw rod through the first threaded hole respectively.

[0008] As a further solution of the utility model: the two groups of reinforcement plates are fixedly connected with a second screw in the middle position of the back-to-back sides, the two groups of fixed clamps are penetrated with a second threaded hole in the middle position of the back-to-back sides, and the two groups of fixed clamps are threadedly connected with the two groups of second screws through the second threaded holes respectively.

[0009] As a further solution of the utility model: both sides of the two groups of the clamping plates are fixedly connected with mounting slide rods, the two inner walls of the bottom trough shell and the edge positions on both sides are provided with mounting slide grooves, the back-to-back sides of the two groups of the clamping plates are provided with first screw rings, and the outer sides of the two groups of the fixed clamping plates are provided with second screw rings.

[0010] As a further solution of the utility model: the four groups of installation slide rods are respectively located on the inner sides of the four groups of installation slide grooves, and the two groups of clamping plates are clamped with the bottom groove shell, and the two groups of the first screw rings are threadedly connected with the first screw rod.

[0011] As a further solution of the utility model: two groups of the second screw rods are respectively threadedly connected with two groups of the second screw rings.

[0012] The utility model adopts the above technical scheme, and has the following advantages compared with the prior art: by rotating the first screw between the two groups of clamping plates, the two groups of moving blocks are driven to move relative to each other along the bottom groove shell under the cooperation of the symmetrical threaded sections and the first threaded holes, thereby driving the two groups of fixed clamping plates to move relative to each other until the two groups of fixed clamping plates are initially tightly fitted with the test piece, and then the two groups of second screws are respectively rotated through the second threaded holes on the fixed clamping plates, thereby driving the two groups of reinforcement plates to move relative to each other until the two groups of reinforcement plates further fix the test piece, which can prevent the tensile test specimen from detaching from the fixing device during the tensile test, realizes the function of tightly fixing the tensile test specimen, and improves the stability of the tensile test.

[0013] The two sets of moving blocks are threadedly installed on the outside of the first screw rod through the first threaded hole, and then the two sets of mounting slide rods and two sets of mounting slide grooves are matched to make the two sets of clamping plates respectively fixed and installed on both sides of the inside of the bottom groove shell. At this time, the two sets of moving blocks are both located inside the bottom groove shell, and the two sets of first screw rings are threadedly connected to the two ends of the first screw rod, and then the two sets of second screws are respectively installed on the two sets of fixed clamping plates through the second threaded hole and the second screw ring, thereby realizing the combined installation function of the fixing device and facilitating the rapid replacement of faulty parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a fixing device for a tensile test specimen mold in an embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the connection structure of the bottom tank shell in the embodiment of the utility model;

[0016] Figure 3 This is a schematic diagram of the connection structure of the fixed splint in the embodiment of the utility model;

[0017] Figure 4 It is a top view of a fixing device for a tensile test specimen mold in an embodiment of the utility model.

[0018] In the figure: 1, bottom groove shell; 2, fixed splint; 3, moving block; 4, clamping plate; 5, first screw; 6, first threaded hole; 7, reinforcement plate; 8, second screw; 9, second threaded hole; 10, arc groove; 11, mounting slide rod; 12, mounting slide groove; 13, first screw ring; 14, second screw ring. DETAILED DESCRIPTION

[0019] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0020] Example 1, please refer to Figure 1-Figure 4 A fixing device for a tensile test specimen mold includes a bottom groove shell 1 and two groups of fixed splints 2. The lower ends of the two groups of fixed splints 2 are fixedly connected with moving blocks 3, and the two groups of moving blocks 3 are both located inside the bottom groove shell 1. Reinforcement plates 7 are provided at the middle positions of the opposite sides of the two groups of fixed splints 2, and two groups of arc grooves 10 are opened on the two groups of fixed splints 2.

[0021] A first screw 5 is provided through the inner side of the bottom trough shell 1, and clamping plates 4 are provided near both sides of the bottom trough shell 1. Two groups of clamping plates 4 are sleeved on the outer periphery of the first screw 5. A first threaded hole 6 is provided through one side of the two groups of moving blocks 3. Symmetrical threaded sections are provided on the outer side of the first screw 5, and the two groups of moving blocks 3 are threadedly connected to the first screw 5 through the first threaded holes 6, respectively.

[0022] In this embodiment, the first screw rod 5 is threadedly connected to the moving block 3 to facilitate the relative movement of the two sets of fixed clamping plates 2 .

[0023] The two groups of reinforcement plates 7 are fixedly connected with second screws 8 in the middle positions of the back-to-back sides. The two groups of fixed clamps 2 are penetrated with second threaded holes 9 in the middle positions of the back-to-back sides. The two groups of fixed clamps 2 are threadedly connected with the two groups of second screws 8 through the second threaded holes 9 respectively.

[0024] In this embodiment, the second screw rod 8 is threadedly connected to the fixed clamping plate 2 to facilitate the relative movement of the two groups of reinforcement plates 7 .

[0025] Specifically, by rotating the first screw 5 between the two groups of clamping plates 4, the two groups of movable blocks 3 are driven to move relative to each other along the bottom groove shell 1 with the cooperation of the symmetrical threaded sections and the first threaded holes 6, thereby driving the two groups of fixed clamping plates 2 to move relative to each other, until the two groups of fixed clamping plates 2 are initially tightly fitted with the specimen, and then the two groups of second screws 8 are respectively rotated through the second threaded holes 9 on the fixed clamping plates 2, thereby driving the two groups of reinforcement plates 7 to move relative to each other, until the two groups of reinforcement plates 7 further fix the specimen, which can prevent the tensile test specimen from detaching from the fixing device during the tensile test, realize the function of tightening and positioning the tensile test specimen, and improve the stability of the tensile test.

[0026] Example 2, please refer to Figure 1-Figure 4 A fixing device for a tensile test specimen mold, both sides of the two groups of clamping plates 4 are fixedly connected with mounting slide rods 11, the two inner walls of the bottom trough shell 1 and the edge positions on both sides are provided with mounting slide grooves 12, the back-to-back sides of the two groups of clamping plates 4 are provided with first screw rings 13, and the outer sides of the two groups of fixed clamping plates 2 are provided with second screw rings 14.

[0027] The four groups of mounting slide bars 11 are respectively located at the inner sides of the four groups of mounting slide grooves 12 , and the two groups of clamping plates 4 are both clamped with the bottom groove shell 1 , and the two groups of first screw rings 13 are both threadedly connected with the first screw rod 5 .

[0028] In this embodiment, two groups of mounting slide bars 11 and two groups of mounting slide grooves 12 cooperate to facilitate the installation and use of two groups of clamping plates 4 .

[0029] The two groups of second screw rods 8 are threadedly connected to the two groups of second screw rings 14 respectively.

[0030] In this embodiment, the second screw ring 14 is used to limit the position of the second screw rod 8.

[0031] Specifically, the two groups of moving blocks 3 are threadedly installed on the outside of the first screw rod 5 through the first threaded hole 6, and then the two groups of mounting slide rods 11 and the two groups of mounting slide grooves 12 are cooperated to make the two groups of clamping plates 4 respectively clamped and installed on both sides of the bottom groove shell 1. At this time, the two groups of moving blocks 3 are both located inside the bottom groove shell 1, and the two groups of first screw rings 13 are threadedly connected to the two ends of the first screw rod 5, and then the two groups of second screws 8 are respectively installed on the two groups of fixed clamping plates 2 through the second threaded hole 9 and the second screw ring 14, thereby realizing the combined installation function of the fixing device and facilitating the rapid replacement of faulty parts.

[0032] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A fixing device for a tensile test specimen mold, comprising a bottom tank shell (1), characterized in that: It also includes two groups of fixed splints (2), the lower ends of the two groups of fixed splints (2) are fixedly connected with moving blocks (3), and the two groups of moving blocks (3) are located inside the bottom tank shell (1), and reinforcement plates (7) are provided at the middle positions of the opposite sides of the two groups of fixed splints (2), and two groups of arc grooves (10) are opened on the two groups of fixed splints (2).

2. A fixing device for a tensile test specimen mold according to claim 1, characterized in that: A first screw rod (5) is provided through the inner side of the bottom trough shell (1), and clamping plates (4) are provided near both sides of the inner side of the bottom trough shell (1), and two groups of the clamping plates (4) are sleeved on the outer periphery of the first screw rod (5).

3. A fixing device for a tensile test specimen mold according to claim 2, characterized in that: A first threaded hole (6) is formed through one side of the two groups of moving blocks (3); a symmetrical threaded section is formed on the outer side of the first screw rod (5); and the two groups of moving blocks (3) are respectively threadedly connected to the first screw rod (5) through the first threaded hole (6).

4. A fixing device for a tensile test specimen mold according to claim 1, characterized in that: The middle positions of the two groups of reinforcement plates (7) facing each other are fixedly connected with second screw rods (8), the middle positions of the two groups of fixed clamping plates (2) facing each other are penetrated with second threaded holes (9), and the two groups of fixed clamping plates (2) are respectively threadedly connected with the two groups of second screw rods (8) through the second threaded holes (9).

5. A fixing device for a tensile test specimen mold according to claim 2, characterized in that: Both sides of the two groups of the clamping plates (4) are fixedly connected with mounting slide bars (11), and both inner walls of the bottom trough shell (1) and the edges of both sides are provided with mounting slide grooves (12), and the back-to-back sides of the two groups of the clamping plates (4) are provided with first screw rings (13), and the outer sides of the two groups of the fixed clamping plates (2) are provided with second screw rings (14).

6. A fixing device for a tensile test specimen mold according to claim 5, characterized in that: The four groups of mounting slide bars (11) are respectively located on the inner sides of the four groups of mounting slide grooves (12), and the two groups of clamping plates (4) are both clamped with the bottom groove shell (1), and the two groups of the first screw rings (13) are both threadedly connected with the first screw rod (5).

7. A fixing device for a tensile test specimen mold according to claim 4, characterized in that: The two groups of the second screw rods (8) are respectively threadedly connected to the two groups of second screw rings (14).

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