CN219391669U

CN219391669U - Impact testing machine

Info

Publication number: CN219391669U
Application number: CN202320165316.0U
Authority: CN
Inventors: 何剑华
Original assignee: Shanghai Kewei Instrument Co ltd
Current assignee: Shanghai Kewei Instrument Co ltd
Priority date: 2023-02-02
Filing date: 2023-02-02
Publication date: 2023-07-21
Anticipated expiration: 2033-02-02

Abstract

The utility model discloses an impact testing machine, comprising: a drop hammer assembly for impacting the sample; the guide rod is in sliding connection with the drop hammer assembly and is used for limiting the sliding track of the drop hammer assembly; the upper end of the guide rod is fixed with a top plate, and the lower end of the guide rod is fixed with a bottom plate; a protective cover assembly is arranged around the guide rod and used for blocking the splashing of the scraps; a limiting mechanism is arranged on the bottom plate and used for limiting the drop hammer assembly; and a laser range finder is arranged at one end, close to the bottom plate, of the guide rod, and the limiting mechanism ascends or descends according to the detection result of the laser range finder. The bottom of the impact testing machine is provided with the protective cover, and scraps generated by impact are placed to splash around, and meanwhile, the scraps are collected, so that the cleaning is convenient; meanwhile, a limiting mechanism is added at the impact position, after the impact of the drop hammer to the sample is detected, the limiting mechanism is lifted to limit the impact rod, and the secondary impact is avoided to influence test data.

Description

Impact testing machine

Technical Field

The utility model relates to the field of material testing, in particular to an impact testing machine.

Background

The impact tester is a material tester for applying impact test force to a sample and performing impact test, and the drop hammer impact tester releases a drop hammer from a set height, and freely drops to impact the sample, and tests the sample after the completion of the test to obtain data, so that the drop track of the drop hammer needs to be limited, and the drop hammer is prevented from being incapable of impacting the sample.

At present, a common practical guide rail limits the sliding track of the drop hammer, so that the drop hammer drops down in the vertical direction to impact the sample; however, because the drop hammer or the materials of the samples are different, the drop hammer can rebound after impacting the samples, and secondary impact is carried out on the samples, so that the test data is influenced; meanwhile, when the drop hammer impacts the sample, scraps can be generated, after the test is finished, the sample needs to be cleaned, and the scraps can splash everywhere during impact, so that the collection and the cleaning are inconvenient.

Disclosure of Invention

In order to solve the above technical problems, the present utility model provides an impact testing machine, including: a drop hammer assembly for impacting the sample; the guide rod is in sliding connection with the drop hammer assembly and is used for limiting the sliding track of the drop hammer assembly; the upper end of the guide rod is fixed with a top plate, and the lower end of the guide rod is fixed with a bottom plate; a protective cover assembly is arranged around the guide rod and used for blocking the splashing of the scraps; a limiting mechanism is arranged on the bottom plate and used for limiting the drop hammer assembly; and a laser range finder is arranged at one end, close to the bottom plate, of the guide rod, and the limiting mechanism ascends or descends according to the detection result of the laser range finder.

Preferably: the guide rods are arranged in number, the drop hammer assembly comprises drop hammers and a connecting plate, the drop hammers are fixed below the connecting plate, two holes are formed in the connecting plate, and the two guide rods are connected through the two holes.

Preferably: when the limiting mechanism is contracted, the height of the limiting mechanism is smaller than the length of the drop hammer, and when the limiting mechanism is lifted, the height of the limiting mechanism is larger than the sum of the length of the drop hammer and the height of the sample.

Preferably: the protective cover assembly comprises two long plates and two short plates, wherein first grooves are formed in the two long plates, and two ends of the two short plates are respectively embedded into the first grooves.

Preferably: the bottom plate is provided with a second groove, and the bottoms of the two short plates are embedded into the second groove.

Preferably: the limiting mechanism comprises a limiting plate, and the limiting plate is arranged on the bottom plate.

Preferably: a push rod is arranged below the limiting plate.

Preferably: the push rod is installed in the bottom plate.

Preferably: the limiting mechanisms are arranged at two sides of the guide rods respectively.

Preferably: the distance between the two limiting mechanisms is smaller than the length of the connecting plate.

The utility model has the technical effects and advantages that:

the protective cover is added at the bottom of the impact testing machine to prevent fragments generated by impact from splashing everywhere, and meanwhile, the fragments are collected, so that the cleaning is convenient; meanwhile, a limiting mechanism is added at the impact position, after the impact of the drop hammer to the sample is detected, the limiting mechanism is lifted to limit the impact rod, and the secondary impact is avoided to influence test data.

Drawings

FIG. 1 is a schematic view of an impact tester according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a part of the structure of a testing machine according to an embodiment of the present application;

FIG. 3 is a front view of a testing machine provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of a limiting mechanism according to an embodiment of the present application.

In the figure:

1. a top plate; 2. a guide rod; 3. a drop hammer assembly; 4. a protective cover assembly; 5. a limiting mechanism; 6. a laser range finder; 101. a first groove; 102. a second groove; 501. a limiting plate; 502. a push rod.

Detailed Description

The utility model will be described in further detail with reference to the drawings and the detailed description. The embodiments of the utility model have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Referring to fig. 1-4, in this embodiment, an impact tester is provided, which includes a drop hammer assembly 3 for impacting a sample; the guide rod 2 is in sliding connection with the drop hammer assembly 3 and is used for limiting the sliding track of the drop hammer assembly 3, so that the drop hammer assembly 3 can drop an impact sample in the vertical direction, the impact position deviation is avoided, the test result is influenced, and in the embodiment, two guide rods 2 are arranged; the upper end of the guide rod 2 is fixed with a top plate 1, the lower end is fixed with a bottom plate, and a sample is placed at the center of the bottom plate and is on the same axis with the drop hammer assembly 3; the protective cover assembly 4 is arranged around the guide rod 2 and used for blocking the splashing of the scraps, so that the scraps can be collected and cleaned in the later period; a limiting mechanism 5 is arranged on the bottom plate and used for limiting the lowest falling height of the drop hammer assembly 3; the laser range finder 6 is installed to the one end that is close to the bottom plate on the guide bar 2, and stop gear 5 goes up or descends the motion that rises through laser range finder 6 testing result, in this embodiment, after laser range finder 6 detects that drop hammer subassembly 3 assaults the sample, stop gear 5 rises, is higher than the height of sample, stops it before drop hammer subassembly 3 secondary impact sample, prevents drop hammer subassembly 3 secondary impact sample, influences test data.

The drop hammer assembly 3 comprises a drop hammer and a connecting plate, wherein the drop hammer is fixed below the connecting plate, two holes are formed in the connecting plate, two guide rods 2 are connected through the two holes, the drop hammer falling process and principle are the prior art, and can be clearly understood by a person skilled in the art, and the description is omitted in the embodiment; before the first impact, i.e. when the limiting mechanism 5 is contracted, the height of the limiting mechanism 5 is smaller than the length of the drop hammer, and after the first impact, i.e. when the limiting mechanism 5 is lifted, the height of the limiting mechanism 5 is larger than the sum of the length of the drop hammer and the height of the sample.

The protective cover assembly 4 comprises two long plates and two short plates, the two long plates are provided with first grooves 101, two ends of the two short plates are respectively embedded into the first grooves 101 to enclose a sample, and when the sample is impacted by a drop hammer, fragments generated by impact can be blocked to prevent the fragments from splashing everywhere; the bottom plate is provided with a second groove 102, the bottoms of the two short plates are embedded into the second groove 102, and the two short plates can be detached from the second groove 102 and the first groove 101, so that the two short plates can be conveniently detached after the test is finished, and scraps can be cleaned; the limiting mechanisms 5 are arranged at two sides of the two guide rods 2 respectively; the distance between the two limiting mechanisms 5 is smaller than the length of the connecting plate, and the rising height is adjusted according to the height of the sample, in this embodiment, the limiting mechanisms 5 comprise limiting plates 501, and the limiting plates 501 are arranged on the bottom plate; the push rod 502 is installed to the below of limiting plate 501, and push rod 502 installs in the bottom plate, detects through laser rangefinder 6 whether drop hammer subassembly 3 has carried out the first time to the sample and strikeed, controls the flexible of push rod 502 to adjust the height at limiting plate 501 place, play the effect that prevents the secondary impact.

It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art and which are included in the embodiments of the present utility model without the inventive step, are intended to be within the scope of the present utility model. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.

Claims

1. An impact tester, comprising:

a drop hammer assembly (3) for impacting the sample;

the guide rod (2) is in sliding connection with the drop hammer assembly (3) and is used for limiting the sliding track of the drop hammer assembly (3);

the upper end of the guide rod (2) is fixed with a top plate (1), and the lower end is fixed with a bottom plate;

a protective cover assembly (4) is arranged around the guide rod (2) to prevent scraps from splashing;

a limiting mechanism (5) is arranged on the bottom plate and used for limiting the drop hammer assembly (3);

and a laser range finder (6) is arranged at one end, close to the bottom plate, of the guide rod (2), and the limiting mechanism (5) ascends or descends through the detection result of the laser range finder (6).

2. An impact tester according to claim 1, characterized in that the guide rods (2) are provided with 2, the drop hammer assembly (3) comprises a drop hammer and a connecting plate, the drop hammer is fixed below the connecting plate, two holes are formed in the connecting plate, and the two guide rods (2) are connected through the two holes.

3. An impact tester according to claim 2, characterized in that the height of the limit mechanism (5) is smaller than the drop hammer length when the limit mechanism (5) is contracted, and the height of the limit mechanism (5) is larger than the sum of the drop hammer length and the specimen height when the limit mechanism (5) is lifted.

4. An impact tester according to claim 1, wherein the protective cover assembly (4) comprises two long plates and two short plates, the two long plates are provided with first grooves (101), and two ends of the two short plates are respectively embedded into the first grooves (101).

5. An impact tester according to claim 4, wherein the bottom plate is provided with a second recess (102), and the bottoms of the two short plates are embedded in the second recess (102).

6. An impact tester according to claim 1, characterized in that the limit mechanism (5) comprises a limit plate (501), the limit plate (501) being arranged on the base plate.

7. The impact tester according to claim 6, wherein a push rod (502) is installed below the limiting plate (501).

8. An impact tester as claimed in claim 7, wherein the push rod (502) is mounted in the base plate.

9. An impact tester according to claim 2, characterized in that the limit mechanism (5) is provided in two, on one side of the two guide bars (2), respectively.

10. An impact tester according to claim 9, characterized in that the distance between two of the limit mechanisms (5) is smaller than the length of the connecting plate.