CN215179328U

CN215179328U - Impact device suitable for different size concrete test pieces

Info

Publication number: CN215179328U
Application number: CN202121534685.XU
Authority: CN
Inventors: 李长辉; 王启材; 韦志远; 吴堃; 陈宇; 陈雪芳
Original assignee: Civil Aviation University of China
Current assignee: Civil Aviation University of China
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2021-12-14
Anticipated expiration: 2031-07-07

Abstract

An impact device suitable for concrete samples of different sizes. The device comprises a lower bottom plate, a rotating wheel, an electric box, an upper top plate, a powered magnet, an outer upright post, a balance weight, a guide frame, a test piece baffle, a steel ball, a limiting ring, an upper cross beam, an inner upright post, a short upright post and a lower cross beam; the utility model has the advantages and positive effects that: the test piece baffle can be replaced according to the size of the concrete test piece to adapt to the concrete test piece, and the test piece baffle comprises but is not limited to a cube test piece, a prism test piece and a round cake test piece, wherein the side length or the diameter of the cube test piece is 100mm or 150 mm. In addition, the weight and the drop distance of the counterweight can be freely adjusted; the device also has the advantages of simple structure, low cost, good working stability, strong operability and the like.

Description

Impact device suitable for different size concrete test pieces

Technical Field

The utility model belongs to the technical field of the concrete shock resistance test, especially, relate to an impact device suitable for not unidimensional concrete sample.

Background

The concrete structure can bear dynamic loads such as impact in practical engineering application, and the impact load has the characteristics of short duration and high energy, so that the concrete structure can be seriously damaged, and how to measure the performance of the concrete structure under the impact load becomes the focus of attention of researchers at home and abroad. The existing test methods commonly used for measuring the impact resistance of the concrete structure comprise a drop hammer type impact test, an MTS test, an SHPB test, a light air cannon impact test, a pendulum bob test and the like, wherein the drop hammer type impact test method is simple to operate, low in manufacturing cost and free of energy consumption, but a common drop hammer impact device is only suitable for a concrete test piece with a fixed size, and only the impact device can be replaced if the impact test of test pieces with other sizes is carried out, so that the test universality is poor and the operation is complex.

Disclosure of Invention

In order to solve the problem, an object of the utility model is to provide a concrete test device that shocks resistance can be applicable to not unidimensional concrete sample.

In order to achieve the purpose, the utility model provides an impact device suitable for different size concrete samples includes lower plate, runner, electronic box, upper top plate, circular telegram magnet, outer column, counter weight, guide frame, sample baffle, steel ball, spacing ring, upper beam, inner column, short stand and bottom end rail; wherein, the upper top plate is horizontally arranged right above the lower bottom plate; the upper ends and the lower ends of the outer upright posts are respectively connected with the bottom surface of the upper top plate and the surface edge of the lower bottom plate at intervals; the upper ends and the lower ends of the two inner upright posts are respectively connected with the bottom surface of the upper top plate and the middle part of the surface of the lower bottom plate at intervals; two ends of the upper cross beam and the lower cross beam are respectively connected to the two inner upright posts in a movable manner; the two limiting rings are respectively sleeved on the parts, positioned above the upper cross beam, of the two inner stand columns and used for limiting the position of the upper cross beam; the electrified magnet is arranged on the bottom surface of the middle part of the upper cross beam; the balance weight is arranged in the middle of the lower cross beam; the electric box is arranged outside part of the outer upright post and is electrically connected with the electrified magnet; the rotating wheel is also arranged outside part of the outer upright post, a steel strand is wound in the groove, and the outer end of the steel strand penetrates through the upper top plate downwards after passing through a fixed point on the surface of the upper top plate and is connected with the middle part of the upper cross beam; the lower ends of the two short upright posts are fixed in the middle of the surface of the lower bottom plate at intervals; the test piece baffle plates are in a vertical state, the two test piece baffle plates are oppositely arranged, the lower ends of the two test piece baffle plates are detachably fixed in the middle of the surface of the lower base plate, and the positions of the inner upright column, the short upright column and the test piece baffle plates are staggered; two ends of the guide frame are respectively sleeved outside the two short upright posts, and the middle part of the guide frame is sunken downwards to form a groove; the lower part of the steel ball is arranged in the groove of the guide frame.

The test piece baffle is fixed on the lower base plate through nuts and has various specifications.

And a button for controlling the electrified magnet is arranged on the electric box.

And a leveling base is arranged on the bottom surface of the lower bottom plate.

And the lower end of the inner upright post is provided with a buffering and shockproof device.

The utility model has the advantages and positive effects that: the test piece baffle can be replaced according to the size of the concrete test piece to adapt to the concrete test piece, and the test piece baffle comprises but is not limited to a cube test piece, a prism test piece and a round cake test piece, wherein the side length or the diameter of the cube test piece is 100mm or 150 mm. In addition, the weight and the drop distance of the counterweight can be freely adjusted; the device also has the advantages of simple structure, low cost, good working stability, strong operability and the like.

Drawings

FIG. 1 is a perspective view of the impact device suitable for concrete samples of different sizes provided by the present invention;

FIG. 2 is a front view of the impact device structure suitable for concrete samples of different sizes provided by the present invention;

FIG. 3 is a structural side view of the impact device suitable for concrete samples of different sizes provided by the present invention;

fig. 4 is a top view of fig. 2.

Detailed Description

For further understanding of the contents, features and effects of the present invention, the following embodiments are exemplified and will be described in detail with reference to the accompanying drawings:

as shown in fig. 1 to 4, the utility model provides an impact device suitable for different size concrete samples includes a lower base plate 1, a runner 2, an electronic box 3, an upper top plate 4, a power-on magnet 5, an outer column 6, a counterweight 7, a guide frame 8, a sample baffle 9, a steel ball 10, a spacing ring 11, an upper cross beam 12, an inner column 13, a short column 14 and a lower cross beam 15; wherein, the upper top plate 4 is horizontally arranged right above the lower bottom plate 1; the upper ends and the lower ends of the outer upright posts 6 are respectively connected with the bottom surface of the upper top plate 4 and the surface edge of the lower bottom plate 1 at intervals; the upper ends and the lower ends of the two inner upright columns 13 are respectively connected with the bottom surface of the upper top plate 4 and the middle part of the surface of the lower bottom plate 1 at intervals; the two ends of the upper beam 12 and the lower beam 15 are respectively connected to the two inner upright columns 13 in a movable manner; the two limiting rings 11 are respectively sleeved on the parts, above the upper cross beam 12, of the two inner vertical columns 13 and used for limiting the position of the upper cross beam 12; the electrified magnet 5 is arranged on the bottom surface of the middle part of the upper cross beam 12; the counterweight 7 is arranged in the middle of the lower cross beam 15; the electric box 3 is arranged outside the partial outer upright post 6 and is electrically connected with the electrifying magnet 5; the rotating wheel 2 is also arranged outside part of the outer upright post 6, a steel strand is wound in a groove on the rotating wheel, and the outer end of the steel strand penetrates through the upper top plate 4 backwards and downwards through a fixed point on the surface of the upper top plate 4 and is connected with the middle part of the upper cross beam 12; the lower ends of the two short upright posts 14 are fixed in the middle of the surface of the lower bottom plate 1 at intervals; the test piece baffle plates 9 are in a vertical state, the two test piece baffle plates 9 are oppositely arranged, the lower ends of the two test piece baffle plates are detachably fixed in the middle of the surface of the lower base plate 1, and the positions of the inner upright columns 13, the short upright columns 14 and the test piece baffle plates 9 are staggered; two ends of the guide frame 8 are respectively sleeved outside the two short upright posts 14, and the middle part of the guide frame is sunken downwards to form a groove; the lower part of the steel ball 10 is arranged in the groove of the guide frame 8.

The specimen baffle 9 is fixed on the lower base plate 1 through nuts and has various specifications.

And a button for controlling the electrified magnet 5 is arranged on the electric box 3.

And a leveling base is arranged on the bottom surface of the lower bottom plate 1.

And a buffering and shockproof device is arranged at the lower end of the inner upright post 6.

Will now the utility model provides an impact device's theory of operation suitable for not unidimensional concrete sample explains as follows:

when the impact test is required to be carried out on the concrete sample, firstly, a tester selects a sample baffle plate 9 with a proper size according to the size of the concrete sample, then the lower ends of the two sample baffle plates 9 are fixed in the middle of the surface of the lower base plate 1 in an opposite mode by using nuts, and then the concrete sample is stably placed on the surface of the lower base plate 1 between the two sample baffle plates 9; then, the two ends of the guide frame 8 are respectively sleeved outside the two short upright posts 14 until the bottom of the guide frame 8 is contacted with the concrete sample; then the lower part of the steel ball 10 is arranged in the groove of the guide frame 8; pressing a button on the electric box 3 to enable the electrified magnet 5 to be in a working state; lifting the counterweight 7 together with the upper cross beam 12 by hand until the counterweight 7 is contacted with the lower surface of the electrified magnet 5, so that the counterweight 7 and the electrified magnet are absorbed into a whole; adjusting the size of the counterweight 7 according to the test requirement, then adjusting the heights of the energized magnet 5 and the counterweight 7 by a steel strand by using a method of rotating the rotating wheel 2 until a required drop distance is reached, wherein the drop distance is the distance between the position of the mass center of the counterweight 7 and the upper surface of the steel ball 10, and the position is used as an initial position; after the falling distance is determined, a pin is inserted to fix the rotating wheel 2; after the preparation work is finished, the button on the electric box 3 is pressed again to cut off the power of the electrified magnet 5, then the counterweight 7 is separated from the electrified magnet 5, then the steel ball 10 is hit by free falling body movement, and the steel ball 10 transmits the impact force to the concrete test piece through the guide frame 8; then, the counterweight 7 is lifted to the initial position again by hand, and the button on the electric box 3 is pressed to enable the electrified magnet 5 to be in the working state again so as to adsorb the counterweight 7; and finally, taking down the steel ball 10 and the guide frame 8, carefully observing the surface of the concrete sample, completing an impact test, repeating the steps until the concrete sample is cracked and damaged, and finishing the test. In addition, in the test process, the weight 7 adopted is 4-10.5kg, and 0.5kg is adjustable; the falling distance is 10-2000mm, and the 10mm is adjustable.

Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention, which is within the scope of the present invention.

Claims

1. The utility model provides an impact device suitable for not unidimensional concrete sample which characterized in that: the impact device suitable for the concrete samples with different sizes comprises a lower bottom plate (1), a rotating wheel (2), an electric box (3), an upper top plate (4), an electrified magnet (5), an outer upright post (6), a balance weight (7), a guide frame (8), a sample baffle plate (9), a steel ball (10), a limiting ring (11), an upper cross beam (12), an inner upright post (13), a short upright post (14) and a lower cross beam (15); wherein, the upper top plate (4) is horizontally arranged right above the lower bottom plate (1); the upper ends and the lower ends of the outer upright posts (6) are respectively connected with the bottom surface of the upper top plate (4) and the surface edge of the lower bottom plate (1) at intervals; the upper ends and the lower ends of the two inner upright posts (13) are respectively connected with the bottom surface of the upper top plate (4) and the middle part of the surface of the lower bottom plate (1) at intervals; two ends of the upper beam (12) and the lower beam (15) are respectively connected to the two inner upright columns (13) in a movable manner; the two limiting rings (11) are respectively sleeved on the parts, located above the upper cross beam (12), of the two inner vertical columns (13) and used for limiting the position of the upper cross beam (12); the electrified magnet (5) is arranged on the bottom surface of the middle part of the upper cross beam (12); the counterweight (7) is arranged in the middle of the lower cross beam (15); the electric box (3) is arranged outside part of the outer upright post (6) and is electrically connected with the electrifying magnet (5); the rotating wheel (2) is also arranged outside part of the outer upright post (6), a steel strand is wound in the groove, the outer end of the steel strand penetrates through the upper top plate (4) downwards after passing through a fixed point on the surface of the upper top plate (4) and is connected with the middle part of the upper cross beam (12); the lower ends of the two short upright posts (14) are fixed in the middle of the surface of the lower bottom plate (1) at intervals; the test piece baffle plates (9) are in a vertical state, the two test piece baffle plates (9) are oppositely arranged, the lower ends of the two test piece baffle plates are detachably fixed in the middle of the surface of the lower base plate (1), and the positions of the inner upright column (13), the short upright column (14) and the test piece baffle plates (9) are staggered; two ends of the guide frame (8) are respectively sleeved outside the two short upright posts (14), and the middle part of the guide frame is sunken downwards to form a groove; the lower part of the steel ball (10) is arranged in the groove of the guide frame (8).

2. The impact device suitable for concrete samples of different sizes according to claim 1, characterized in that: the test piece baffle (9) is fixed on the lower bottom plate (1) through nuts and has various specifications.

3. The impact device suitable for concrete samples of different sizes according to claim 1, characterized in that: and a button for controlling the electrified magnet (5) is arranged on the electric box (3).

4. The impact device suitable for concrete samples of different sizes according to claim 1, characterized in that: and a leveling base is arranged on the bottom surface of the lower bottom plate (1).

5. The impact device suitable for concrete samples of different sizes according to claim 1, characterized in that: and a buffering and shockproof device is arranged at the lower end of the inner upright post (13).