Support of drop hammer testing machine

Abstract

The utility model provides a drop weight testing machine support, which belongs to the technical field of testing devices and comprises a supporting seat, an abutting assembly and a clamping assembly, an impact area is arranged on the supporting seat, an impact channel is arranged in the impact area, the abutting assembly is arranged on one side of the supporting seat in the impact area and comprises two abutting blocks arranged on two sides of the impact channel, and the clamping assembly is arranged on the supporting seat. The two abutting blocks are used for abutting against the convex side face of the arc-shaped sample, the clamping assembly is arranged on the other side, located in the impact area, of the supporting base, is opposite to the abutting assemblies and comprises two ejection blocks arranged on the two sides of the impact channel and a driving component, and the driving component is used for driving the two ejection blocks to move and abut against the concave side face of the arc-shaped sample. And the arc-shaped sample is fixed above the impact channel. According to the drop hammer testing machine support provided by the utility model, an arc-shaped sample can be directly fixed on the drop hammer testing machine support, and the material performance of the arc-shaped sample does not change before a test, so that the test result is accurate.

Description

Technical Field

[0001] This utility model belongs to the field of testing device technology, and more specifically, it relates to a support for a drop hammer test machine. Background Technology

[0002] A drop weight testing machine is a device used for impact testing. It calculates the absorbed work of the impact specimen by measuring the potential energy difference before and after the impact of the pendulum. It is suitable for determining the impact resistance of various pipes and plates, as well as impact testing of reinforced concrete components. Drop weight testing machines are generally equipped with a drop weight support, such as... Figure 1 As shown, a common drop weight testing machine support includes two locking blocks 100, with a locking groove 101 at the upper end of each block 100. The two locking blocks 100 are spaced apart along a straight line, and a channel for the hammer head 300 to pass through is provided between them. In use, the two ends of the sample 200 are locked in the locking grooves 101 on the two locking blocks 100, with the middle of the sample 200 suspended. During the test, the hammer head 300 impacts the middle of the sample 200 from top to bottom. In practical applications, the above-mentioned drop weight testing machine support is only suitable for flat plate type samples. However, the drop weight test sample for welded pipes is a transverse sample of the pipe body, which is an arc-shaped sample with a certain degree of curvature. In order to conduct the impact test, the arc-shaped sample needs to be flattened before the drop weight testing machine support can be used. However, the arc-shaped sample will undergo cold work hardening when flattened, which will reduce the plasticity and toughness of the material, resulting in changes in the properties of the sample and deviations in the test results. Therefore, it is necessary to develop a drop weight testing machine support suitable for arc-shaped samples of welded pipes. Utility Model Content

[0003] The purpose of this invention is to provide a drop weight tester support, which aims to solve the problem of inaccurate test results when using existing drop weight tester supports to test arc-shaped samples of welded pipes.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a support for a drop weight testing machine, comprising:

[0005] A support base, wherein the support base is provided with an impact zone for supporting the arc-shaped sample, and the impact zone is provided with an impact channel for the hammer to pass through;

[0006] An abutment assembly is disposed on the support base and located on one side of the impact zone. The abutment assembly includes two abutment blocks disposed on both sides of the impact channel. The two abutment blocks are used to abut the convex side of the arc-shaped sample.

[0007] A clamping assembly is disposed on the support base and located on the other side of the impact zone, opposite to the abutment assembly. The clamping assembly includes two top blocks disposed on both sides of the impact channel and a driving component. The driving end of the driving component is connected to the two top blocks and is used to drive the two top blocks to move toward the abutment assembly to press against the concave side of the arc-shaped sample and fix the arc-shaped sample above the impact channel.

[0008] In one possible implementation, the abutment block has an inclined surface at one end facing the clamping assembly. The inclined surface is inclined from the outer edge to the inner edge toward the side away from the clamping assembly. The inclined surface is used to abut against the convex side of the arc-shaped sample.

[0009] In one possible implementation, the top block has a spherical surface at one end facing the abutment assembly, the spherical surface being used to abut against the concave side of the arc-shaped specimen.

[0010] In one possible implementation, the abutment block is detachably connected to the support base.

[0011] In one possible implementation, an abutment replacement component is also included, which comprises multiple sets of replacement blocks, each set containing two replacement blocks of different lengths. The support base of the replacement blocks is detachably connected to replace the abutment blocks to accommodate arc-shaped specimens with different wall thicknesses.

[0012] In one possible implementation, the support base is provided with a square column, and the abutment block is provided with a square hole that runs vertically through it. The abutment block is inserted into the square column through the square hole.

[0013] In one possible implementation, the driving end of the driving component is provided with a connecting block, and the two top blocks are connected to the connecting block.

[0014] In one possible implementation, the support base is provided with a T-shaped groove along the line connecting the abutment component and the clamping component, and the connecting block is provided with a T-shaped slider corresponding to the T-shaped groove. The T-shaped slider is inserted into the T-shaped groove and slides in the T-shaped groove.

[0015] In one possible implementation, the abutting block and the top block located on the same side are staggered.

[0016] The beneficial effects of the drop weight testing machine support provided by this utility model are as follows: Compared with the prior art, during impact testing, the arc-shaped specimen is placed in the impact zone on the support, with the middle part of the arc-shaped specimen suspended above the impact channel. The convex side of the arc-shaped specimen abuts against two abutment blocks located on one side of the impact zone. Then, by activating the driving component, two top blocks located on the other side of the impact zone are moved towards the arc-shaped specimen, abutting against the concave side of the arc-shaped specimen. This fixes the arc-shaped specimen on the impact zone, allowing the hammer to impact it. Furthermore, the drop weight testing machine support provided by this utility model eliminates the need to flatten the arc-shaped specimen before testing; the specimen can be directly fixed on the support, and the material properties of the arc-shaped specimen remain unchanged before testing, thus ensuring accurate test results. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the support structure of a drop weight testing machine in the prior art;

[0019] Figure 2 A top view of a drop weight testing machine support provided in an embodiment of this utility model;

[0020] Figure 3 For along Figure 2 Cross-sectional view of line AA in the middle.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Support base; 2. Impact zone; 3. Impact channel; 4. Abutment block; 41. Inclined surface; 5. Top block; 6. Drive component; 7. Square column; 8. Connecting block; 81. T-shaped slider; 9. T-shaped groove; 10. Arc-shaped specimen; 100. Locking block; 101. Locking groove; 200. Specimen; 300. Hammer head. Detailed Implementation

[0023] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0025] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] Please see Figures 2 to 3 The present invention provides a drop hammer test machine support. The drop hammer test machine support includes a support base 1, an abutment assembly, and a clamping assembly. The support base 1 has an impact zone 2 for supporting an arc-shaped specimen 10. The impact zone 2 has an impact channel 3 for the hammer head to pass through. The abutment assembly is located on the support base 1 and within the impact zone 2 on one side. The abutment assembly includes two abutment blocks 4 located on both sides of the impact channel 3, which abut against the convex side of the arc-shaped specimen 10. The clamping assembly is located on the support base 1 and within the impact zone 2 on the other side, opposite to the abutment assembly. The clamping assembly includes two top blocks 5 located on both sides of the impact channel 3 and a driving component 6. The driving end of the driving component 6 is connected to the two top blocks 5 and drives the two top blocks 5 to move towards the abutment assembly, pressing against the concave side of the arc-shaped specimen 10, thus fixing the arc-shaped specimen 10 above the impact channel 3.

[0028] This utility model provides a drop weight testing machine support. Compared with the prior art, during impact testing, the arc-shaped specimen 10 is placed in the impact zone 2 on the support base 1, with the middle part of the arc-shaped specimen 10 suspended above the impact channel 3. The convex side of the arc-shaped specimen 10 abuts against two abutment blocks 4 located on one side of the impact zone 2. Then, by activating the driving component 6, two top blocks 5 located on the other side of the impact zone 2 are moved towards the arc-shaped specimen 10, so that the two top blocks 5 abut against the concave side of the arc-shaped specimen 10, thereby fixing the arc-shaped specimen 10 on the impact zone 2, allowing the hammer to impact the arc-shaped specimen 10. This drop weight testing machine support eliminates the need to flatten the arc-shaped specimen 10 before testing; the arc-shaped specimen 10 can be directly fixed on the drop weight testing machine support, and the material properties of the arc-shaped specimen 10 do not change before testing, thus ensuring accurate test results.

[0029] In some embodiments, please refer to Figures 2 to 3 The support base 1 is a rectangular block structure. The impact zone 2 is the entire upper surface of the support base 1. A through groove is provided in the middle of the upper surface of the support base 1, running vertically through the support base 1. The left end of the through groove passes through the left side wall of the support base 1. The width of the through groove is greater than the width of the hammer on the testing machine. The hammer can move freely up and down in the through groove. The through groove is the impact channel 3.

[0030] In this embodiment, please refer to Figures 2 to 3 Two abutment blocks 4 are located on the left side of the upper end face of the support base 1 along the length direction and are symmetrically arranged on both sides of the impact channel 3 in the width direction. In this embodiment, the driving component 6 is a cylinder. The cylinder is fixed on the right side of the upper end face of the support base 1 along the length direction. The actuating end of the cylinder is set towards the two abutment blocks 4. A connecting block 8 is provided on the actuating end of the cylinder. Two top blocks 5 are fixed on the end face of the connecting block 8 away from the cylinder. In this embodiment, the two top blocks 5 are symmetrical to each other and correspond to the two abutment blocks 4. There is a clamping space for placing the arc-shaped sample 10 between the abutment blocks 4 and the top blocks 5. It should be noted that the clamping space is located above the impact channel 3. In application, the arc-shaped sample 10 is placed in the clamping space, so that the convex side of the arc-shaped sample 10 abuts against the two abutment blocks 4. Then, the cylinder is activated to drive the two top blocks 5 to press against the concave side of the arc-shaped sample 10, thus fixing the arc-shaped sample 10 above the impact channel 3. During the test, the hammer head breaks the arc-shaped sample 10 from top to bottom and passes through the impact channel 3.

[0031] In this embodiment, the abutment block 4 and the top block 5 located on the same side are staggered. This arrangement makes the force points on both sides of the arc-shaped sample 10 staggered, avoiding the mutual cancellation of forces, thereby improving the clamping and fixing effect.

[0032] In some embodiments, please refer to Figures 2 to 3 To ensure reliable contact between the abutment block 4 and the arc-shaped specimen 10, an inclined surface 41 is provided at the end of the abutment block 4 facing the top block 5. The inclined surface 41 is inclined from the outer edge to the inner edge away from the top block 5. This arrangement forms a V-shaped groove between the two inclined surfaces 41 on the two abutment blocks 4. During operation, the arc-shaped specimen 10 abuts against the two inclined surfaces 41, which is equivalent to being stuck in the aforementioned V-shaped groove. On the one hand, this provides positioning for the arc-shaped specimen 10, and on the other hand, the inclined surface 41 contacts the convex side of the arc-shaped specimen 10, forming a line-surface fit. This reduces the contact stress between the abutment block 4 and the arc-shaped specimen 10, making the abutment relationship between the abutment block 4 and the arc-shaped specimen 10 reliable.

[0033] In this embodiment, please refer to Figures 2 to 3 A spherical surface is provided at one end of the top block 5 facing the abutment block 4. When in use, the spherical surface abuts against the concave side of the arc-shaped sample 10. Through the above arrangement, the contact stress between the top block 5 and the arc-shaped sample 10 is also reduced, making the abutment relationship between the top block 5 and the arc-shaped sample 10 reliable.

[0034] In some embodiments, please refer to Figures 2 to 3 The abutment block 4 and the support base 1 are detachably connected. Specifically, a square column 7 is provided on the support base 1 at the position corresponding to the abutment block 4. A square hole is provided on the abutment block 4, which is connected vertically. The square hole is adapted to the size of the square column 7. In use, the abutment block 4 can be inserted into the square column 7 with the help of the square hole. The insertion and cooperation between the square column 7 and the square hole can prevent the abutment block 4 from rotating during use.

[0035] In practical applications, due to the different wall thicknesses of different types of welded pipes, arc-shaped specimens 10 with different wall thicknesses will also exist during testing. In order to ensure that the center of the arc-shaped specimens 10 with different wall thicknesses can be aligned with the center of the hammer head during testing, the drop hammer test machine support provided in this application is also provided with abutment replacement components. The abutment replacement components include multiple sets of replacement blocks, with two replacement blocks in each set. The structure of the replacement blocks is the same as that of the abutment block 4, except that there is a difference in length. In this embodiment, the length specification of the replacement block corresponds to the wall thickness specification of the arc-shaped specimen. The replacement block support 1 is detachably connected. In application, when the wall thickness of the arc-shaped specimen 10 changes, the abutment block 4 is replaced with a replacement block corresponding to its specification for testing. The length difference between the replacement block and the abutment block 4 compensates for the wall thickness difference of the arc-shaped specimen 10. In this way, the center of the arc-shaped specimen can be aligned with the center of the hammer head.

[0036] In some embodiments, please refer to Figures 2 to 3A T-shaped groove 9 is provided on the support base 1 along the line connecting the abutment component and the clamping component, i.e., its length direction. A T-shaped slider 81 is provided on the connecting block 8 corresponding to the T-shaped groove 9. The T-shaped slider 81 is inserted into the T-shaped groove 9 and slides in the T-shaped groove 9. By setting the T-shaped groove 9 and the T-shaped slider 81, the connecting block 8 is slidably set on the support base 1, so that the support base 1 supports the connecting block 8, which facilitates the cylinder to drive the connecting block 8.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A support for a drop hammer testing machine, characterised in that, include: The support base (1) is provided with an impact zone (2) for supporting the arc-shaped sample (10), and the impact zone (2) is provided with an impact channel (3) for the hammer to pass through. The abutting component is provided on the support base (1) and located on one side of the impact zone (2). The abutting component includes two abutting blocks (4) provided on both sides of the impact channel (3). The two abutting blocks (4) are used to abut the convex side of the arc-shaped sample (10). A clamping assembly is provided on the support base (1) and located on the other side of the impact zone (2), opposite to the abutment assembly. The clamping assembly includes two top blocks (5) provided on both sides of the impact channel (3) and a driving component (6). The driving end of the driving component (6) is connected to the two top blocks (5) and is used to drive the two top blocks (5) to move toward the abutment assembly and press against the concave side of the arc-shaped sample (10) to fix the arc-shaped sample (10) above the impact channel (3).

2. A support for a drop hammer testing machine as defined in claim 1, wherein The abutment block (4) has an inclined surface (41) at one end facing the clamping assembly. The inclined surface (41) is inclined from the outer edge to the inner edge toward the side away from the clamping assembly. The inclined surface (41) is used to abut against the convex side of the arc-shaped sample (10).

3. A support for a drop hammer testing machine as defined in claim 1, wherein The top block (5) has a spherical surface at one end facing the abutment component, which is used to abut against the concave side of the arc-shaped sample (10).

4. A support for a drop hammer testing machine as defined in claim 1 wherein, The abutment block (4) is detachably connected to the support base (1).

5. A support for a drop hammer testing machine as defined in claim 4 wherein, It also includes an abutment replacement component, which includes multiple sets of replacement blocks, each set of which has two replacement blocks, and each set of replacement blocks has a different length. The support base (1) of the replacement block is detachably connected and is used to replace the abutment block (4) to adapt to arc-shaped specimens (10) with different wall thicknesses.

6. A support for a drop hammer testing machine as defined in claim 4 wherein, The support base (1) is provided with a square column (7), and the abutment block (4) is provided with a square hole that runs through it from top to bottom. The abutment block (4) is inserted into the square column (7) through the square hole.

7. A support for a drop hammer testing machine as defined in claim 1 wherein, The driving end of the driving component (6) is provided with a connecting block (8), and the two top blocks (5) are connected to the connecting block (8).

8. A drop hammer machine support as defined in claim 7 wherein, The support base (1) is provided with a T-shaped groove (9) along the line connecting the abutment component and the clamping component. The connecting block (8) is provided with a T-shaped slider (81) corresponding to the T-shaped groove (9). The T-shaped slider (81) is inserted into the T-shaped groove (9) and slides in the T-shaped groove (9).

9. A support for a drop hammer testing machine as defined in claim 1 wherein, The abutting block (4) and the top block (5) located on the same side are staggered.

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