Clamping device for simply supported beam impact test

Abstract

The utility model discloses a clamping device for a simply supported beam impact test, which comprises an impact tester body, and the impact tester body is provided with an impact pendulum bob and a sample preparation mounting seat; the clamping seats are mounted on the sample preparation mounting seats respectively and comprise outer shells, and the outer shells are provided with middle guide holes; the electric push rods are arranged at the front end and the rear end of the middle guide hole and are respectively provided with a rubber pressing head which is used for pressing a prepared sample; the horizontal detection bolt is arranged on the outer shell and is positioned on the upper side of the middle guide hole; the organ type shield is mounted on the outer shell, is positioned on the lower side of the middle guide hole and is connected with the electric push rod; the air blowing nozzle is arranged in the outer shell and located on the upper side of the electric push rod. The two clamping seats are arranged on the left side and the right side, the simply supported beam is arranged in the middle guide hole in a penetrating mode, the front electric push rod and the rear electric push rod are compacted, fastened and locked through the rubber pressing head, the air blowing nozzle is matched with the organ type protective cover, damaged scraps can be blown out, cleaning is completed, and the device is convenient to use, practical, stable and efficient.

Description

Technical Field

[0001] This utility model belongs to the field of simply supported beam impact testing technology, specifically, it relates to a clamping device for simply supported beam impact testing. Background Technology

[0002] A simply supported beam impact testing machine is a testing device used to determine the impact toughness of simply supported beams. It typically uses a support on a platform to fix both ends of the test specimen, and then uses a pendulum to conduct the impact test. In existing simply supported beam impact testing machines, the specimen is usually placed directly against a stop, and then the pendulum impacts from another direction. After the specimen is impacted, it will splash, posing a safety hazard if not handled properly, and collecting the specimen is also inconvenient. Alternatively, clamps may be set on the jaws of the specimen support, but the jaws are mostly tightened manually with knobs. The clamping force is inconsistent during manual operation, which can easily affect the impact test results. Furthermore, the fixed jaw position has poor adjustability, resulting in insufficient overall test accuracy. Utility Model Content

[0003] In view of this, the technical problem to be solved by this utility model is to provide a clamping device for impact testing of simply supported beams, so as to avoid the trouble of poor clamping effect of simply supported beam specimens in the past, which easily affects the accuracy of impact testing.

[0004] To solve the above-mentioned technical problems, this utility model discloses a clamping device for a simply supported beam impact test, which includes:

[0005] The impact testing apparatus body includes an impact pendulum and a sample preparation mounting base. The sample preparation mounting base is configured with two sets of left and right sets arranged opposite each other for clamping the sample, and the impact pendulum passes through the middle of the sample preparation mounting base. It also includes:

[0006] The clamping seats are respectively installed on the sample preparation mounting base for fastening both ends of the sample. The clamping seats include an outer shell with a central guide hole; electric push rods installed on the outer shell and located at the front and rear ends of the central guide hole, each electric push rod having a rubber pressure head facing the center of the central guide hole, the rubber pressure head being used to press the sample; a horizontal detection bolt set on the outer shell and located on the upper side of the central guide hole; an accordion-style cover installed on the outer shell and located on the lower side of the central guide hole, the accordion-style cover being connected to the electric push rod; and an air nozzle set on the outer shell and located on the upper side of the electric push rod, the air nozzle facing the central guide hole.

[0007] According to one embodiment of the present invention, the bottom of the clamping seat is mounted on the sample mounting seat via a shock-absorbing pad, and the shock-absorbing pad is configured as a double-layer rubber pad.

[0008] According to one embodiment of the present invention, the surface of the rubber pressure head is formed into an inwardly concave arc shape.

[0009] According to one embodiment of the present invention, the aforementioned intermediate guide hole is circular, and a portion of the accordion-style protective cover is exposed.

[0010] According to one embodiment of the present invention, the accordion-style cover is U-shaped and its side is fitted with the inner wall of the outer shell.

[0011] Compared with the prior art, the present invention can achieve the following technical effects:

[0012] By setting two clamping seats on the left and right, the simply supported beam is inserted into the middle guide hole, and the front and rear electric push rods use rubber pressure heads to compact and tighten it, thus completing the locking. The air nozzle, together with the accordion-style protective cover, can blow away broken debris, thus completing the cleaning. It is convenient, practical, stable and efficient.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the above-mentioned technical effects at the same time. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the body of the simply supported beam impact tester according to an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of a clamping device for impact testing of a simply supported beam according to an embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the internal structure of the clamping device for impact testing of a simply supported beam according to an embodiment of this utility model.

[0018] Attached Figure Labels

[0019] Impact testing instrument body 10, impact pendulum 11, sample preparation mounting base 20, clamping base 30, outer shell 31, intermediate guide hole 32, electric push rod 33, rubber indenter 34, horizontal testing bolt 35, bellows-style protective cover 36, air nozzle 37, shock-absorbing pad 40. Detailed Implementation

[0020] The following will describe in detail the implementation of this utility model with reference to the accompanying drawings and embodiments, so that the implementation of this utility model can be fully understood and carried out based on how technical means are used to solve technical problems and achieve technical effects.

[0021] Please refer to Figures 1 to 3 , Figure 1 This is a schematic diagram of the body of the simply supported beam impact tester according to an embodiment of the present invention; Figure 2 This is a schematic diagram of a clamping device for impact testing of a simply supported beam according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the internal structure of the clamping device for impact testing of a simply supported beam according to an embodiment of this utility model.

[0022] As shown in the figure, a clamping device for a simply supported beam impact test includes: an impact testing instrument body 10, which has an impact pendulum 11 and a sample preparation mounting base 20. The sample preparation mounting base 20 is configured in two sets, left and right, and is arranged opposite to each other for clamping the sample, with the impact pendulum 11 passing through the middle of the sample preparation mounting base 20; it also includes clamping seats 30, which are respectively installed on the sample preparation mounting base 20 for fastening both ends of the sample. The clamping seats 30 include an outer shell 31, which has a central guide hole 32; the clamping seats 30 are installed on the outer shell 31. The electric push rods 33 are located at both ends of the intermediate guide hole 32. Each electric push rod 33 has a rubber pressure head 34 facing the center of the intermediate guide hole 32. The rubber pressure head 34 is used to press the sample. A horizontal detection bolt 35 is set on the outer shell 31 and located on the upper side of the intermediate guide hole 32. An accordion-style cover 36 is installed on the outer shell 31 and located on the lower side of the intermediate guide hole 32. The accordion-style cover 36 is connected to the electric push rod 33. An air nozzle 37 is set inside the outer shell 31 and located on the upper side of the electric push rod 33. The air nozzle 37 faces the intermediate guide hole 32.

[0023] In one embodiment of this utility model, the impact testing instrument body 10 is a commonly used simply supported beam impact testing instrument. It completes the impact test by placing the sample of the simply supported beam on the sample mounting base 20 and impacting it with the impact pendulum 11, thereby detecting strength, impact resistance, etc. This utility model will not elaborate on the impact testing instrument body 10 here.

[0024] Previous impact testing apparatuses had simple structures, with some simply placing the sample directly onto the sample mounting base 20 without a clamping mechanism, which could cause sample splashing. Others used bench vises, which were bulky, had poor adjustability, occupied space, and made operation cumbersome. This invention provides a clamping seat 30 on the sample mounting base 20 for clamping, improving the convenience and stability of operation.

[0025] Specifically, the clamping seat 30 has an outer shell 31, with a central guide hole 32 for inserting the sample to complete the clamping. Inside the outer shell 31 are two opposing electric push rods 33, which clamp the sample. The electric push rods 33 have protruding rubber pressure heads 34 at their front ends for flexible contact. The upper end of the outer shell 31 has a horizontal detection bolt 35 for positioning the upper part of the sample, calibrating the height of both ends, and locking the upper end. An accordion-style protective cover 36 is located at the lower end of the clamping opening, receiving the electric push rods 33 connecting both ends. It is retractable and used to collect broken debris. Finally, an air nozzle 37 is used to blow out the debris. The front end of the air nozzle 37 is a corrugated flexible hose for easy adjustment of direction. For illustration purposes, it is shown at both ends with its mouth aligned with the upper side of the accordion-style protective cover 36, allowing pressure to blow out the debris from the central guide hole 32.

[0026] The clamping seat 30 of this utility model is mounted on the sample mounting seat 20 by a shock-absorbing pad 40 at its bottom, and the shock-absorbing pad 40 is set as a double-layer rubber pad to provide cushioning.

[0027] Preferably, the surface of the rubber pressure head 34 is concave arc-shaped for stable clamping.

[0028] In one embodiment, the central guide hole 32 is circular and exposes part of the accordion-style protective cover 36 to facilitate the blowing out of debris.

[0029] In addition, the accordion-style cover 36 is U-shaped and its sides fit snugly against the inner wall of the outer shell 31. It can also be equipped with a guide rail-like sliding groove for tight installation and strong practicality.

[0030] In summary, this utility model uses two clamping seats 30 on the left and right sides to insert a simply supported beam into the middle guide hole. The front and rear electric push rods 33 are pressed and tightened by the rubber pressure head 34 to complete the locking. The air nozzle 37, together with the accordion-style protective cover 36, can blow away broken debris to complete the cleaning. It is convenient, practical, stable and efficient.

[0031] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A clamping device for a simply supported beam impact test, comprising an impact testing instrument body, the impact testing instrument body having an impact pendulum and a sample preparation mounting base, the sample preparation mounting base being configured in two sets, left and right, arranged opposite each other for clamping a sample, and the impact pendulum passing through the middle of the sample preparation mounting base; characterized in that, Also includes: A clamping seat is installed on the sample preparation mounting base to fasten both ends of the sample. The clamping seat includes an outer shell with a central guide hole; electric push rods installed on the outer shell and located at the front and rear ends of the central guide hole, each electric push rod having a rubber pressure head facing the center of the central guide hole, the rubber pressure head being used to press the sample; a horizontal detection bolt disposed on the outer shell and located above the central guide hole; an accordion-style cover installed on the outer shell and located below the central guide hole, the accordion-style cover being connected to the electric push rod; and an air nozzle disposed on the outer shell and located above the electric push rod, the air nozzle facing the central guide hole.

2. The clamping device for impact testing of a simply supported beam according to claim 1, characterized in that, The clamping seat is mounted on the sample preparation mounting seat via a shock-absorbing pad, and the shock-absorbing pad is configured as a double-layer rubber pad.

3. The clamping device for impact testing of a simply supported beam according to claim 1, characterized in that, The surface of the rubber indenter is concave arc-shaped.

4. The simple supported beam impact test clamping device according to claim 1, characterized by The central guide hole is circular and exposes part of the accordion-style cover.

5. The clamping device for impact testing of a simply supported beam according to claim 1, characterized in that, The accordion-style cover is U-shaped and its sides fit snugly against the inner wall of the outer shell.

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