CN114034457B

CN114034457B - Drum-type impact test device and method for block slot key impact

Info

Publication number: CN114034457B
Application number: CN202111345583.8A
Authority: CN
Inventors: 马沁巍; 马少鹏; 邢同振; 易亚楠; 尹延春
Original assignee: Beijing Institute of Technology BIT
Current assignee: Beijing Institute of Technology BIT
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2022-09-13
Anticipated expiration: 2041-11-15
Also published as: CN114034457A

Abstract

The invention discloses a drum-type collision test device and a test method for block slot key collision, wherein the drum-type collision test device for the block slot key collision comprises: the first block is in contact with the first side roller and the first middle roller, a groove is formed at an included angle formed by one side of the first block, which is far away from the first side roller, and one side of the first block, which is far away from the second side plate, and the first middle roller and the groove are not overlapped in the direction perpendicular to the plane of the first side plate; the second block body is in contact with the second side roller and the second middle roller, a square key is arranged on one side, away from the second side roller, of the second block body, and a connecting line of the center point of the groove and the center point of the square key is perpendicular to the third direction; the propelling device is arranged on the second side plate and used for providing kinetic energy for the first block. The moving direction of the first block body is limited by the first side roller and the first middle roller, and the moving direction of the second block body is limited by the second side roller and the second middle roller, so that the collision condition is more in line with the engineering practice.

Description

Drum-type impact test device and method for block slot key impact

Technical Field

The invention relates to the technical field of block impact tests, in particular to a drum-type impact test device and a drum-type impact test method for block slot key impact.

Background

The reactor core of the high-temperature gas-cooled reactor adopts a fuel ball bed structure and uses graphite as a moderator and a structural material, and the specific method is to use a large graphite brick to build a circular ring structure as the reactor core structure, and the inside of the reactor core is filled with graphite fuel balls capable of generating high temperature of about 1000 ℃. Under the action of loads such as earthquake, airflow and the like, the graphite brick components serving as the core structure are always subjected to an instant dynamic load impact, and in the process, the graphite bricks forming the ball bed collide in three modes: positive impact, oblique impact and impact of graphite brick with connecting piece key, pin and tenon.

If the collision causes the core structure to be damaged, the operation of the nuclear reactor can be stopped and even a nuclear fuel leakage accident can occur. In order to ensure the safe operation of the graphite ball bed, finite element analysis must be performed on the whole loading process according to the actual working conditions. The premise of numerical simulation is that the dynamic response characteristics of the graphite component in the collision process are deeply known, namely, the speed change, the collision recovery coefficient (rebound coefficient), the collision contact duration and other dynamic parameters of the graphite bricks before and after the collision are obtained through experiments, the equivalent spring stiffness coefficient and the damping coefficient between the graphite bricks are obtained, and the deep mechanism of the collision is researched and discussed.

The block collision indoor test device mainly comprises an air rail device, a shuffle board platform and a swing arm collision table. The graphite brick for testing has large mass, and the air rail device cannot provide large buoyancy; although bearings can be added on two sides of a collision track of the shuffle board to control the direction, the friction force between the graphite brick and the shuffle board is related to the mass, and the friction force between the graphite brick with large mass and the shuffle board cannot be ignored. Moreover, the air rail device and the shuffle board are suitable for the positive collision or the oblique collision of the graphite blocks, and the graphite blocks are easy to rotate when the block slot keys are collided, so that the translation speed of the blocks after collision is influenced. Though the block body can be prevented from rotating when the slot key collides by the swing arm collision table, an additional clamp needs to be fixed on the graphite brick, and the collision effect can be influenced.

Therefore, it is an urgent need to provide a drum-type impact testing apparatus and a testing method for block slot key impact.

Disclosure of Invention

In view of this, the invention provides a drum-type impact test device and a drum-type impact test method for block slot key impact.

In one aspect, the present invention provides a drum-type impact test apparatus for block slot key impact, comprising:

the box body comprises side plates and a bottom plate, the side plates are connected with the bottom plate, the side plates comprise a first side plate, a second side plate, a third side plate and a fourth side plate which are connected in sequence, the first side plate and the third side plate are oppositely arranged along a first direction, the second side plate and the fourth side plate are oppositely arranged along a second direction, and the second direction is vertical to the first direction; the bottom plate is provided with a convex strip extending along the second direction, one end of the convex strip is connected with the second side plate, and the other end of the convex strip is connected with the fourth side plate; a first displacement sensor and a second displacement sensor are arranged on one side, close to the second side plate, of the fourth side plate;

a first slide rail extending in the first direction is arranged on one side, close to the fourth side plate, of the second side plate, one end of the first slide rail is connected with the first side plate, the other end of the first slide rail is connected with the third side plate, the first slide rail comprises a first slide rail A and a first slide rail B which are arranged in parallel, and the first slide rail B is positioned on one side, close to the convex strip, of the first slide rail A; the second side plate comprises a virtual center line extending in a third direction, the third direction is perpendicular to the first direction and the second direction, a second slide rail extending in the first direction is further arranged on one side, close to the fourth side plate, of the second side plate, the second slide rail is located between the first slide rail A and the first slide rail B, one end of the second slide rail is connected with the first side plate, the other end of the second slide rail extends to the virtual center line, the second slide rail comprises a second slide rail A and a second slide rail B which are arranged in parallel, and the second slide rail A is located on one side, close to the first slide rail A, of the second slide rail B; a third slide rail extending in the first direction is further arranged on one side, close to the fourth side plate, of the second side plate, the third slide rail is located between the first slide rail A and the first slide rail B, one end of the third slide rail is connected with the third side plate, the other end of the third slide rail extends to the virtual center line, the third slide rail comprises a third slide rail A and a third slide rail B which are arranged in parallel, and the third slide rail A is located on one side, close to the first slide rail A, of the third slide rail B; a fourth slide rail, a fifth slide rail and a sixth slide rail are arranged on one side, close to the second side plate, of the fourth side plate, the fourth slide rail comprises a fourth slide rail A and a fourth slide rail B which are arranged in parallel, and the fourth slide rail is arranged symmetrically to the first slide rail; the fifth slide rail comprises a fifth slide rail A and a fifth slide rail B which are arranged in parallel, and the fifth slide rail and the second slide rail are symmetrically arranged; the sixth slide rail comprises a sixth slide rail A and a sixth slide rail B which are arranged in parallel, and the sixth slide rail and the third slide rail are symmetrically arranged; the first displacement sensor is not overlapped with the fourth slide rail, the fifth slide rail and the sixth slide rail along the direction vertical to the plane of the fourth side plate; the second displacement sensor is not overlapped with the fourth slide rail, the fifth slide rail and the sixth slide rail;

the roller comprises a first rod, a second rod and a plurality of rotating rollers which are arranged in sequence, wherein the first rod, the second rod and the plurality of rotating rollers are arranged oppositely;

the rollers comprise a first bottom roller, a second bottom roller, a first side roller, a second side roller, a first middle roller and a second middle roller; the first rod of the first bottom drum is connected with the first side plate, and the second rod of the first bottom drum is connected with the convex strip; the first rod of the second bottom roller is connected with the third side plate, and the second rod of the second bottom roller is connected with the convex strip; one end of the first rod in the first side roller is connected with the first sliding rail in a sliding mode, the other end of the first rod in the first side roller is connected with the fourth sliding rail in a sliding mode, one end of the second rod in the first side roller is connected with the first sliding rail in a sliding mode, and the other end of the second rod in the first side roller is connected with the fourth sliding rail in a sliding mode; one end of the first rod in the second side roller is connected with the first sliding rail in a sliding mode, the other end of the first rod in the second side roller is connected with the fourth sliding rail A in a sliding mode, one end of the second rod in the second side roller is connected with the first sliding rail B in a sliding mode, and the other end of the second rod in the second side roller is connected with the fourth sliding rail B in a sliding mode; one end of the first rod of the first middle roller is connected with the second sliding rail A in a sliding mode, the other end of the first rod of the first middle roller is connected with the fifth sliding rail A in a sliding mode, one end of the second rod of the first middle roller is connected with the second sliding rail B in a sliding mode, and the other end of the second rod of the first middle roller is connected with the fifth sliding rail B in a sliding mode; one end of the first rod of the second middle roller is connected with the third slide rail A in a sliding mode, the other end of the first rod of the second middle roller is connected with the sixth slide rail A in a sliding mode, one end of the second rod of the second middle roller is connected with the third slide rail B in a sliding mode, and the other end of the second rod of the second middle roller is connected with the sixth slide rail B in a sliding mode;

a first block, one side of which is in contact with the first side roller, wherein the first block is provided with a first notch which is in contact with the first middle roller, a groove is arranged at an included angle formed by one side of the first block, which is far away from the first side roller, and one side of the first block, which is far away from the second side plate, the first block is provided with a first acceleration sensor, and the first middle roller and the groove are not overlapped in a direction perpendicular to the plane of the first side plate; the first block and the first displacement sensor at least partially overlap in a direction perpendicular to a plane of the second side plate;

a second block, one side of which is in contact with the second side roller, the second block having a second notch, the second notch being in contact with the second middle roller, a square key being disposed on a side of the second block away from the second side roller, a line connecting a center point of the groove and a center point of the square key being perpendicular to the third direction, the second block having a second acceleration sensor, the second block being at least partially overlapped with the second displacement sensor along a direction perpendicular to a plane where the second side plate is disposed;

and the propelling device is arranged on the second side plate, is positioned between the first slide rail and the second slide rail and is used for providing kinetic energy for the first block.

Preferably, along the third direction, the height of the square key is less than or equal to the height of the groove.

Preferably, the propulsion device comprises a reaction frame, the reaction frame comprises a third rod and a fourth rod which are oppositely arranged, the third rod and the fourth rod extend in the second direction and penetrate through the second side plate, one ends of the third rod and the fourth rod, which are close to the first block, are connected with the first baffle, and one ends of the third rod and the fourth rod, which are far away from the first block, are connected with the second baffle;

the propulsion device further comprises at least two springs, wherein the springs are compression springs, are positioned between the first baffle and the second side plate and are respectively sleeved outside the third rod and the fourth rod;

the propelling device further comprises a wedge block and a jack, the jack is located between the second baffle and the second side plate, the jack is connected with the second side plate, one end of the wedge block is connected with the second baffle, and the other end of the wedge block is connected with the jack.

Preferably, one side of the first block body, which is far away from the bottom plate, is sprayed with first speckles, and one side of the second block body, which is far away from the bottom plate, is sprayed with second speckles;

the high-speed camera is arranged on one side, away from the bottom plate, of the first block, and the photographing range of the high-speed camera covers the first speckles and the second speckles.

Preferably, a distance between any two adjacent turning rollers in the drum is smaller than a radius of the turning rollers.

Preferably, a first dynamic strain gauge is connected between the first acceleration sensor and the first block; and a second dynamic strain gauge is connected between the second acceleration sensor and the second block.

In another aspect, the invention provides a drum-type impact test method for block slot key impact, which adopts any one of the drum-type impact test devices for block slot key impact, and performs the test according to the following steps:

placing said first block against said propulsion means; placing the second block in spaced relation to the fourth side panel; adjusting the first side roller and the first middle roller to clamp the first block, and adjusting the second side roller and the second middle roller to clamp the second block, so that the groove and the square key are at least partially overlapped in a direction perpendicular to a plane where the second side plate is located;

debugging the first displacement sensor, the second displacement sensor, the first acceleration sensor and the second acceleration sensor;

setting a preset speed of the first block;

starting the propulsion device, converting potential energy of the propulsion device into kinetic energy of the first block, and moving the first block along the direction of the second side plate pointing to the fourth side plate;

when the groove of the first block collides with the square key of the second block, the first block stops moving, the second block moves along the direction of the second side plate pointing to the fourth side plate, the first displacement sensor records the moving distance of the first block, the second displacement sensor records the moving distance of the second block, the first acceleration sensor records the acceleration of the first block, and the second acceleration sensor records the acceleration of the second block;

and after the second block body is static, obtaining the kinetic energy variation between the first block body and the second block body according to the movement distance of the first block body, the movement distance of the second block body, the acceleration of the first block body and the acceleration of the second block body.

Preferably, the adopted roller type collision test device for block slot key collision comprises:

the propulsion device comprises a reaction frame, the reaction frame comprises a third rod and a fourth rod which are oppositely arranged, the third rod and the fourth rod extend in the second direction and penetrate through the second side plate, one ends, close to the first block, of the third rod and one ends, close to the first block, of the fourth rod are connected with the first baffle, and one ends, far away from the first block, of the third rod and one ends, far away from the first block, of the fourth rod are connected with the second baffle;

the pushing device further comprises a wedge-shaped block and a jack, the jack is located between the second baffle and the second side plate, the jack is connected with the second side plate, one end of the wedge-shaped block is connected with the second baffle, and the other end of the wedge-shaped block is connected with the jack;

setting a preset speed of the first block; activating the propulsion device to convert potential energy of the propulsion device to kinetic energy of the first mass, comprising:

calculating the compression amount of the spring according to the preset speed;

installing the wedge-shaped block, enabling one end of the wedge-shaped block to be connected with the second baffle, enabling the other end of the wedge-shaped block to be connected with the jack, enabling the spring to be in an original state, loading the jack, compressing the spring, and stopping loading after the compression amount is met;

and rapidly detaching the wedge-shaped block, and enabling the spring to recover the original state to convert the elastic potential energy of the spring into the kinetic energy of the first block body.

a first speckle is sprayed on one side, away from the bottom plate, of the first block body, and a second speckle is sprayed on one side, away from the bottom plate, of the second block body;

the high-speed camera is arranged on one side, away from the bottom plate, of the first block, and the photographing range of the high-speed camera covers the first speckles and the second speckles;

and the high-speed camera acquires images at preset time intervals, and the deformation quantity of the first block body and the second block body is judged by comparing the state changes of the first speckle and the second speckle in two adjacent images.

Compared with the prior art, the drum-type collision test device and the test method for block slot key collision provided by the invention at least realize the following beneficial effects:

1. according to the drum-type collision test device and the test method for block slot key collision, one side of a first block is in contact with a first side roller, and the other side of the first block is in contact with a first middle roller; one side of the second block body is contacted with the second side roller, and the other side of the second block body is contacted with the second middle roller. The moving direction of the first block is limited by the first side roller and the first middle roller, the moving direction of the second block is limited by the second side roller and the second middle roller, the second block of the first block is fixed without an additional clamp, the test accuracy and the collision effect cannot be influenced, and the collision condition is more in line with the engineering practice. Because the moving direction of the first block body and the second block body is limited, the groove of the first block body cannot be laterally turned and cannot rotate when colliding with the square key of the second block body.

2. The drum-type collision test device and the test method for block slot key collision, provided by the invention, have the advantages that the propelling device is used for providing kinetic energy for the first block, the propelling device can provide large load to ensure the initial acceleration of the first block with large mass, and the collision test of the first block with large mass and the second block with large mass is realized.

3. According to the drum-type collision test device and the test method for block slot key collision, one end of a first rod in a first side roller is connected with a first sliding rail in a sliding mode, the other end of the first rod is connected with a fourth sliding rail in a sliding mode, one end of a second rod in the first side roller is connected with a first sliding rail in a sliding mode, and the other end of the second rod in the first side roller is connected with a fourth sliding rail in a sliding mode; one end of a first rod in the second side roller is connected with a first sliding rail in a sliding manner, the other end of the first rod in the second side roller is connected with a fourth sliding rail A in a sliding manner, one end of a second rod in the second side roller is connected with a first sliding rail B in a sliding manner, and the other end of the second rod in the second side roller is connected with a fourth sliding rail B in a sliding manner; one end of a first rod of the first middle roller is connected with a second sliding rail A in a sliding mode, the other end of the first rod of the first middle roller is connected with a fifth sliding rail A in a sliding mode, one end of a second rod of the first middle roller is connected with a second sliding rail B in a sliding mode, and the other end of the second rod of the first middle roller is connected with a fifth sliding rail B in a sliding mode; one end of a first rod of the second middle roller is connected with the third sliding rail A in a sliding mode, the other end of the first rod of the second middle roller is connected with the sixth sliding rail A in a sliding mode, one end of a second rod of the second middle roller is connected with the third sliding rail B in a sliding mode, and the other end of the second rod of the second middle roller is connected with the sixth sliding rail B in a sliding mode. First side cylinder, second side cylinder, first middle part cylinder and second middle part cylinder all can move along the second direction, and the restriction that first block and second block can all be carried out through the position of removing first side cylinder, second side cylinder, first middle part cylinder and second middle part cylinder to not unidimensional first block and second block, and the suitability is more extensive.

Of course, it is not necessary for any product in which the present invention is practiced to achieve all of the above-described technical effects simultaneously.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is a top view of a roller impact testing apparatus for block slot key impact according to the present invention;

FIG. 2 is a cross-sectional view taken along line A-A' of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B' of FIG. 1;

FIG. 4 is a cross-sectional view taken along line C-C' of FIG. 1;

FIG. 5 is a schematic illustration of a first block and a second block during a collision;

FIG. 6 is a flow chart of a drum-type crash test method for block slot key impact provided by the present invention;

1-box body, 2-side plate, 3-bottom plate, 4-first side plate, 5-second side plate, 6-third side plate, 7-fourth side plate, 8-convex strip, 9-first displacement sensor, 10-second displacement sensor, 11-first slide rail, 12-first slide rail, 13-first slide rail, 14-virtual central line, 15-second slide rail, 16-second slide rail, 17-second slide rail, 18-third slide rail, 19-third slide rail, 20-third slide rail, 21-fourth slide rail, 22-fifth slide rail, 23-sixth slide rail, 24-fourth slide rail, 25-fourth slide rail, 26-fifth slide rail, 27-fifth slide rail, 28-sixth slide rail, 29-sixth sliding rail b, 30-rollers, 31-first rod, 32-second rod, 33-rotating roller, 34-first bottom roller, 35-second bottom roller, 36-first side roller, 37-second side roller, 38-first middle roller, 39-second middle roller, 40-first block, 41-groove, 42-first acceleration sensor, 43-second block, 44-square key, 45-second acceleration sensor, 46-propulsion device, 47-reaction frame, 48-third rod, 49-fourth rod, 50-first baffle, 51-second baffle, 52-spring, 53-wedge, 54-jack, 55-first speckle, 56-second speckle, 57-high speed camera, 58-first gap, 59-second gap, X-first direction, Y-second direction, Z-third direction.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Referring to fig. 1 to 5, fig. 1 is a top view of a drum type collision test device for block slot key collision according to the present invention; FIG. 2 is a cross-sectional view taken along line A-A' of FIG. 1; FIG. 3 is a cross-sectional view taken along line B-B' of FIG. 1; FIG. 4 is a cross-sectional view taken along line C-C' of FIG. 1; fig. 5 is a schematic diagram of a collision process of a first block and a second block, and illustrates a specific embodiment of the roller type collision test device for block slot key collision provided by the invention, and the roller type collision test device comprises: a box 1, a roller 30, a first block 40, a second block 43 and a propulsion device 46.

The box body 1 comprises side plates 2 and a bottom plate 3, the side plates 2 are connected with the bottom plate 3, the side plates 2 comprise a first side plate 4, a second side plate 5, a third side plate 6 and a fourth side plate 7 which are sequentially connected, the first side plate 4 and the third side plate 6 are oppositely arranged along a first direction X, the second side plate 5 and the fourth side plate 7 are oppositely arranged along a second direction Y, and the second direction Y is perpendicular to the first direction X; the bottom plate 3 is provided with a convex strip 8 extending along the second direction Y, one end of the convex strip 8 is connected with the second side plate 5, and the other end is connected with the fourth side plate 7; a first displacement sensor 9 and a second displacement sensor 10 are arranged on one side, close to the second side plate 5, of the fourth side plate 7;

a first slide rail 11 extending in the first direction X is arranged on one side of the second side plate 5 close to the fourth side plate 7, one end of the first slide rail 11 is connected with the first side plate 4, the other end of the first slide rail 11 is connected with the third side plate 6, the first slide rail 11 comprises a first slide rail a 12 and a first slide rail b 13 which are arranged in parallel, and the first slide rail b 13 is positioned on one side of the first slide rail a 12 close to the convex strip 8; the second side plate 5 comprises a virtual center line 14 extending in a third direction Z, the third direction Z is respectively perpendicular to the first direction X and the second direction Y, one side, close to the fourth side plate 7, of the second side plate 5 is further provided with a second slide rail 15 extending in the first direction X, the second slide rail 15 is located between the first slide rail A12 and the first slide rail B13, one end of the second slide rail 15 is connected with the first side plate 4, the other end of the second slide rail extends to the virtual center line 14, the second slide rail 15 comprises a second slide rail A16 and a second slide rail B17 which are arranged in parallel, and the second slide rail A16 is located on one side, close to the first slide rail A12, of the second slide rail B17; a third slide rail 18 extending in the first direction X is further arranged on one side of the second side plate 5 close to the fourth side plate 7, the third slide rail 18 is located between the first slide rail a 12 and the first slide rail b 13, one end of the third slide rail 18 is connected to the third side plate 6, the other end of the third slide rail 18 extends to the virtual center line 14, the third slide rail 18 comprises a third slide rail a 19 and a third slide rail b 20 which are arranged in parallel, and the third slide rail a 19 is located on one side of the third slide rail b 20 close to the first slide rail a 12; a fourth slide rail 21, a fifth slide rail 22 and a sixth slide rail 23 are arranged on one side, close to the second side plate 5, of the fourth side plate 7, the fourth slide rail 21 comprises a fourth slide rail A24 and a fourth slide rail B25 which are arranged in parallel, and the fourth slide rail 21 and the first slide rail 11 are symmetrically arranged; the fifth slide rail 22 comprises a fifth slide rail A26 and a fifth slide rail B27 which are arranged in parallel, and the fifth slide rail 22 and the second slide rail 15 are symmetrically arranged; the sixth slide rail 23 comprises a sixth slide rail A28 and a sixth slide rail B29 which are arranged in parallel, and the sixth slide rail 23 and the third slide rail 18 are symmetrically arranged; the first displacement sensor 9 has no overlap with the fourth slide rail 21, the fifth slide rail 22 and the sixth slide rail 23 in a direction perpendicular to the plane of the fourth side plate 7; the second displacement sensor 10 does not overlap with the fourth slide rail 21, the fifth slide rail 22 and the sixth slide rail 23;

the roller 30 comprises a first rod 31, a second rod 32 and a plurality of rotating rollers 33 which are arranged in sequence, wherein the first rod 31 is connected with one end of each rotating roller 33, and the second rod 32 is connected with the other end of each rotating roller 33;

the drum 30 includes a first bottom drum 34, a second bottom drum 35, a first side drum 36, a second side drum 37, a first middle drum 38, and a second middle drum 39; the first rod 31 of the first bottom roller 34 is connected with the first side plate 4, and the second rod 32 of the first bottom roller 34 is connected with the convex strip 8; the first rod 31 of the second bottom roller 35 is connected with the third side plate 6, and the second rod 32 of the second bottom roller 35 is connected with the convex strip 8; one end of a first rod 31 in the first side roller 36 is connected with a first slide rail A12 in a sliding manner, the other end of the first rod is connected with a fourth slide rail A24 in a sliding manner, one end of a second rod 32 in the first side roller 36 is connected with a first slide rail B13 in a sliding manner, and the other end of the second rod is connected with a fourth slide rail B25 in a sliding manner; one end of a first rod 31 in a second side roller 37 is connected with a first sliding rail A12 in a sliding manner, the other end of the first rod is connected with a fourth sliding rail A24 in a sliding manner, one end of a second rod 32 in the second side roller 37 is connected with a first sliding rail B13 in a sliding manner, and the other end of the second rod is connected with a fourth sliding rail B25 in a sliding manner; one end of a first rod 31 of the first middle roller 38 is connected with the second sliding rail A16 in a sliding manner, the other end of the first rod is connected with the fifth sliding rail A26 in a sliding manner, one end of a second rod 32 of the first middle roller 38 is connected with the second sliding rail B17 in a sliding manner, and the other end of the second rod is connected with the fifth sliding rail B27 in a sliding manner; one end of a first rod 31 of the second middle roller 39 is connected with the third slide rail A19 in a sliding way, the other end of the first rod is connected with the sixth slide rail A28 in a sliding way, one end of a second rod 32 of the second middle roller 39 is connected with the third slide rail B20 in a sliding way, and the other end of the second rod is connected with the sixth slide rail B29 in a sliding way; the first side roller 36, the second side roller 37, the first middle roller 38 and the second middle roller 39 can move along the second direction Y, and the first block 40 and the second block 43 with different sizes can be limited by moving the positions of the first side roller 36, the second side roller 37, the first middle roller 38 and the second middle roller 39, so that the applicability is wider. Of course, the first side roller 36 may be fixed, and the first middle roller 38, the second middle roller 39, and the second side roller 37 may move in the first direction X; or the second side roller 37 is arranged to be fixed, and the first side roller 36, the first middle roller 38 and the second middle roller 39 move along the first direction X; also or alternatively, the first middle roller 38 is provided to be fixed in position, and the first side roller 36, the second middle roller 39 and the second side roller 37 are moved in the first direction X; also or the second middle roller 39 is fixed, the first side roller 36, the first middle roller 38 and the second side roller 37 can move along the first direction X, and the function of limiting the moving direction of the first block 40 and the second block 43 can be satisfied.

One side of the first block 40 is in contact with the first side roller 36, the first block 40 is provided with a first notch 58, the first notch 58 is in contact with the first middle roller 38, a groove 41 is arranged at an included angle formed by one side of the first block 40, which is far away from the first side roller 36, and one side of the first block 40, which is far away from the second side plate 5, the first block 40 is provided with a first acceleration sensor 42, and the first middle roller 38 and the groove 41 are not overlapped in a direction perpendicular to the plane of the first side plate 4; the first block 40 at least partially overlaps the first displacement sensor 9 in a direction perpendicular to the plane of the second side plate 5;

one side of the second block 43 is in contact with the second side roller 37, the second block 43 is provided with a second notch 59, the second notch 59 is in contact with the second middle roller 39, one side of the second block 43, which is far away from the second side roller 37, is provided with a square key 44, a connecting line of a central point of the groove 41 and a central point of the square key 44 is vertical to the third direction Z, the second block 43 is provided with a second acceleration sensor 45, and the second block 43 and the second displacement sensor 10 are at least partially overlapped along a direction vertical to the plane of the second side plate 5;

specifically, the position of the groove 41 is preferably at the central position of the first block 40 on the side close to the third side plate 6; the shapes of the groove 41 and the square key 44 are only rectangular in this embodiment, and may be set to other shapes, which may be adjusted according to actual needs.

The first side roller 36 and the first middle roller 38 limit the moving direction of the first block 40, the second side roller 37 and the second middle roller 39 limit the moving direction of the second block 43, no additional clamp is needed for fixing the second block 43 of the first block 40, the test accuracy and the collision effect are not affected, and the collision condition is more in line with the engineering practice. Due to the limited moving direction of the first block 40 and the second block 43, when the groove 41 of the first block 40 collides with the square key 44 of the second block 43, the first block does not roll over and does not rotate.

The propelling device 46 is disposed on the second side plate 5 and located between the first slide rail 12 and the second slide rail 15, for providing kinetic energy to the first block 40. The propulsion device 46 can provide a larger load to ensure the initial acceleration of the first mass 40, and the collision test of the first mass 40 and the second mass 43 is realized.

Note that, in order to make the overall structure more clear, the structures of the first bottom roll 34, the second bottom roll 35, and the rib 8 are not illustrated in fig. 1. In fig. 1 to 5, only the first middle roller 38 and the second middle roller 39 are shown to be arranged alternately, the first block 40 is provided with a first notch 58 matched with the first middle roller 38, and the first notch 58 is located on the side of the first block 40 away from the first side plate 4; the second block 43 is provided with a second notch 59 matched with the second middle roller 39, the second notch is located on one side of the second block 43 far away from the third side plate 6, so that the distance between the first block 40 and the second block 43 can be effectively reduced when the first block 40 collides with the second block 43, and of course, the relative positions between the first block 40 and the first middle roller 38 and the relative positions between the second block 43 and the second middle roller 39 can be set as required without limitation. The first displacement sensor 9 and the second displacement sensor 10 may be a pull-wire type displacement sensor, a potentiometer type displacement sensor, an inductive type displacement sensor, an auto-scaler, a capacitive type displacement sensor, an eddy current type displacement sensor, a hall type displacement sensor, or the like, which is not limited and can be adjusted according to actual requirements. The first acceleration sensor 42 and the second acceleration sensor 45 may be of a capacitive type, an inductive type, a strain type, a piezoresistive type, a piezoelectric type, or the like, and are not limited thereto, and may be adjusted according to actual needs. In this embodiment, it is preferable that the heights of the first side roller 36 and the second side roller 37 in the third direction Z are greater than the heights of the first block 40 and the second block 43 in the third direction Z, so as to ensure that the first block 40 and the second block 43 are driven to run smoothly.

Specifically, referring to the relative positions of the first block 40 and the second block 43 in fig. 1, the groove 4132 is provided at a position where the first block 40 is close to the second block 43, assuming that the surface of the drum 30 is smooth, ignoring the influence of air resistance and the like. The material of the first block 40 and the second block 43 can be adjusted freely, and in this embodiment, the material of the first block 40 and the second block 43 is preferably graphite. The propelling device 46 provides kinetic energy to the first block 40, so that the first block 40 moves along the direction from the second side plate 5 to the fourth side plate 7, when the first block 40 collides with the second block 43, the first block 40 and the second block 43 perform kinetic energy conversion, and study on the space-time evolution law of speed and the like is performed.

In some alternative embodiments, with continued reference to fig. 1-5, the height of the square key 44 is equal to or less than the height of the groove 41 along the third direction Z.

It can be understood that, when the height of the square key 44 in the third direction Z is less than or equal to the height of the groove 41 in the third direction Z, the square key 44 is engaged with the groove 41 when the first block 40 collides with the second block 43, and one side of the square key 44 close to the second side plate 5 is in contact with one side of the groove 41 close to the second side plate 5.

In some alternative embodiments, with continued reference to fig. 1 to 5, the propulsion device 46 comprises a reaction frame 47, the reaction frame 47 comprises a third rod 48 and a fourth rod 49 which are oppositely arranged, the third rod 48 and the fourth rod 49 extend in the second direction Y and both extend through the second side plate 5, one end of the third rod 48 and one end of the fourth rod 49 close to the first block 40 are both connected with the first baffle 50, and one end of the third rod 48 and one end of the fourth rod 49 far from the first block 40 are both connected with the second baffle 51;

the propulsion device 46 further comprises at least two springs 52, wherein the springs 52 are compression springs 52, are positioned between the first baffle 50 and the second side plate 5, and are respectively sleeved outside the third rod 48 and the fourth rod 49;

the propulsion device 46 further comprises a wedge-shaped block 53 and a jack 54, the jack 54 is located between the second baffle 51 and the second side plate 5, the jack 54 is connected with the second side plate 5, one end of the wedge-shaped block 53 is connected with the second baffle 51, and the other end of the wedge-shaped block is connected with the jack 54.

It will be appreciated that the spring 52 may be replaced by other structures capable of calculating the spring force so as to accurately control the applied spring force, the angle of the slope of the wedge 53 is smaller than the friction angle of the wedge 53, and since the spring 52 is compressed by loading the jack 54, a larger potential energy is provided, and a larger acceleration is provided even if the mass of the first block 40 is larger.

In some alternative implementations, with continued reference to fig. 1-5, the first block 40 is painted with a first speckle 55 on the side away from the bottom plate 3, and the second block 43 is painted with a second speckle 56 on the side away from the bottom plate 3;

the high-speed camera 57 is arranged on one side, far away from the bottom plate 3, of the first block body 40, and the photographing range of the high-speed camera 57 covers the first speckles 55 and the second speckles 56.

It can be understood that the first displacement sensor 9, the second displacement sensor 10, the first acceleration sensor 42, the second acceleration sensor 45, the first dynamic strain gauge, the second dynamic strain gauge and the high-speed camera 57 are provided, the monitoring accuracy is ensured by matching the first speckle 55 and the second speckle 56, and the deformation process of the first block 40 and the second block 43 can also be explored through the first speckle 55 and the second speckle 56 photographed by the high-speed camera 57. Wherein the first displacement sensor 9 and the second displacement sensor 10 are used for monitoring the displacement and the speed of the first block 40 and the second block 43; a first acceleration sensor 42 and a second acceleration sensor 45 are respectively adhered to the first block 40 and the second block 43 and used for monitoring the acceleration change of the first block 40 and the second block 43; the high-speed camera 57 takes overhead shots of the black and white speckle fields on the upper surfaces of the first and

second blocks

40 and 43, and analyzes the displacement fields on the upper surfaces of the first and

second blocks

40 and 43 by using a digital speckle processing technique.

In some alternative embodiments, with continued reference to fig. 1-5, the distance between any two adjacent turning rollers 33 in the drum 30 is less than the radius of the turning rollers 33.

It is understood that the distance between any two adjacent rotating rollers 33 in the drum 30 can be adjusted according to practical situations, and is not limited herein, but the setting of the distance between any two adjacent rotating rollers 33 in the drum 30 to be smaller than the radius of the rotating rollers 33 can effectively avoid the first block 40 and the second block 43 from being jammed due to the excessive distance between two adjacent rotating rollers 33.

In some alternative embodiments, with continued reference to fig. 1 and 5, a first dynamic strain gauge (not shown) is connected between the first acceleration sensor 42 and the first block 40; a second dynamic strain gauge (not shown) is connected between the second acceleration sensor 45 and the second block 43.

It can be understood that, since the data collected by the first acceleration sensor 42 and the second acceleration sensor 45 are dynamic and the first block 40 and the second block 43 may vibrate when colliding, the arrangement of the first dynamic strain gauge connected to the first acceleration sensor 42 and the second dynamic strain gauge connected to the second acceleration sensor 45 facilitates the detection of the change in the acceleration of the first block 40 and the second block 43.

Referring to fig. 6, fig. 6 is a flowchart of a drum-type impact test method for block slot key impact according to the present invention, which illustrates a specific embodiment of the drum-type impact test method for block slot key impact according to the present invention, and includes:

the roller type collision test device for the block slot key collision in any one embodiment is adopted, and the test is carried out according to the following steps:

s201: placing the first block 40 so that the first block 40 is adjacent to the propulsion device 46; placing the second block 43 such that the second block 43 is spaced from the fourth side plate 7; the first side roller 36 and the first middle roller 38 are adjusted to clamp the first block 40, and the second side roller 37 and the second middle roller 39 are adjusted to clamp the second block 43, so that the groove 41 and the square key 44 at least partially overlap in the direction perpendicular to the plane of the second side plate 5;

s202: debugging the first displacement sensor 9, the second displacement sensor 10, the first acceleration sensor 42 and the second acceleration sensor 45;

s203: setting a preset speed of the first block 40;

s204: activating the propulsion device 46 to convert the potential energy of the propulsion device 46 into the kinetic energy of the first block 40, wherein the first block 40 moves along the direction that the second side plate 5 points to the fourth side plate 7;

s205: when the groove 41 of the first block 40 collides with the square key 44 of the second block 43, the first block 40 stops moving, the second block 43 moves in a direction in which the second side plate 5 is directed to the fourth side plate 7, the first displacement sensor 9 records the moving distance of the first block 40, the second displacement sensor 10 records the moving distance of the second block 43, the first acceleration sensor 42 records the acceleration of the first block 40, and the second acceleration sensor 45 records the acceleration of the second block 43;

s206: after the second block 43 is stationary, the kinetic energy variation between the first block 40 and the second block 43 is obtained according to the movement distance of the first block 40, the movement distance of the second block 43, the acceleration of the first block 40, and the acceleration of the second block 43.

In step S206, not only the amount of change in kinetic energy between the first block 40 and the second block 43, but also kinetic parameters such as the coefficient of restitution (spring back coefficient) of the first block 40 and the second block 43 before and after the collision and the duration of the collision contact can be obtained through experiments, and further the stiffness coefficient and the damping coefficient of the equivalent spring 52 between the graphite bricks can be obtained, and the deep mechanism of the collision can be studied and studied.

In some optional embodiments, the drum-type collision test device for block slot key collision is adopted, and comprises:

the propulsion device 46 comprises a reaction frame 47, the reaction frame 47 comprises a third rod 48 and a fourth rod 49 which are oppositely arranged, the third rod 48 and the fourth rod 49 extend along the second direction Y and both penetrate through the second side plate 5, one ends of the third rod 48 and the fourth rod 49, which are close to the first block 40, are both connected with the first baffle 50, and one ends of the third rod 48 and the fourth rod 49, which are far away from the first block 40, are both connected with the second baffle 51;

the propulsion device 46 further comprises a wedge-shaped block 53 and a jack 54, the jack 54 is located between the second baffle 51 and the second side plate 5, the jack 54 is connected with the second side plate 5, one end of the wedge-shaped block 53 is connected with the second baffle 51, and the other end of the wedge-shaped block is connected with the jack 54;

setting a preset speed of the first block 40;

specifically, activating the propulsion device 46 in step S204 converts potential energy of the propulsion device 46 into kinetic energy of the first mass 40, including:

calculating the compression amount of the spring 52 according to the preset speed;

installing a wedge-shaped block 53, enabling one end of the wedge-shaped block 53 to be connected with the second baffle 51, enabling the other end of the wedge-shaped block 53 to be connected with a jack 54, enabling the spring 52 to be in an original state, loading the jack 54 to compress the spring 52, and stopping loading after the compression amount is met;

the wedge block 53 is rapidly removed, and the spring 52 is restored to the original state, so that the elastic potential energy of the spring 52 is converted into the kinetic energy of the first block body 40.

The inclined angle of the wedge block 53 is smaller than the friction angle of the material of the wedge block 53, and the compressed spring 52 can rebound instantly after the wedge block 53 is removed, so that the active collision block has a certain initial speed, the compression value of the spring 52 can be calculated and determined according to actual test requirements, and the jack 54 can accurately control the compression amount of the spring 52.

the side, far away from the bottom plate 3, of the first block body 40 is coated with a first speckle 55, and the side, far away from the bottom plate 3, of the second block body 43 is coated with a second speckle 56;

the high-speed camera 57 is arranged on one side, far away from the bottom plate 3, of the first block body 40, and the photographing range of the high-speed camera 57 covers the first speckles 55 and the second speckles 56;

specifically, the high-speed camera 57 acquires images at preset time intervals, and determines the deformation amount of the first block 40 and the second block 43 by comparing the state changes of the first speckle 55 and the second speckle 56 in two adjacent images.

According to the embodiment, the drum-type collision test device and the drum-type collision test method for block slot key collision provided by the invention at least have the following beneficial effects:

1. according to the drum-type impact test device and the drum-type impact test method for block slot key impact, one side of a first block is in contact with a first side roller, and the other side of the first block is in contact with a first middle roller; one side of the second block body is contacted with the second side roller, and the other side of the second block body is contacted with the second middle roller. The moving direction of the first block is limited by the first side roller and the first middle roller, the moving direction of the second block is limited by the second side roller and the second middle roller, the second block of the first block is fixed without an additional clamp, the test accuracy and the collision effect cannot be influenced, and the collision condition is more in line with the engineering practice. Because the moving direction of the first block body and the second block body is limited, the groove of the first block body cannot be laterally turned and cannot rotate when colliding with the square key of the second block body.

3. According to the drum-type collision test device and the test method for block slot key collision, one end of a first rod in a first side roller is connected with a first sliding rail in a sliding mode, the other end of the first rod is connected with a fourth sliding rail in a sliding mode, one end of a second rod in the first side roller is connected with a first sliding rail in a sliding mode, and the other end of the second rod in the first side roller is connected with a fourth sliding rail in a sliding mode; one end of a first rod in the second side roller is connected with the first sliding rail in a sliding mode, the other end of the first rod in the second side roller is connected with the fourth sliding rail A in a sliding mode, one end of a second rod in the second side roller is connected with the first sliding rail B in a sliding mode, and the other end of the second rod in the second side roller is connected with the fourth sliding rail B in a sliding mode; one end of a first rod of the first middle roller is connected with a second sliding rail A in a sliding mode, the other end of the first rod of the first middle roller is connected with a fifth sliding rail A in a sliding mode, one end of a second rod of the first middle roller is connected with a second sliding rail B in a sliding mode, and the other end of the second rod of the first middle roller is connected with a fifth sliding rail B in a sliding mode; one end of a first rod of the second middle roller is connected with the third sliding rail A in a sliding mode, the other end of the first rod of the second middle roller is connected with the sixth sliding rail A in a sliding mode, one end of a second rod of the second middle roller is connected with the third sliding rail B in a sliding mode, and the other end of the second rod of the second middle roller is connected with the sixth sliding rail B in a sliding mode. First side cylinder, second side cylinder, first middle part cylinder and second middle part cylinder all can move in the second direction, and the restriction of first block and second block can all be carried out through the position of removing first side cylinder, second side cylinder, first middle part cylinder and second middle part cylinder to the first block and the second block of not unidimensional, and the suitability is more extensive.

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A drum-type bump test device for block slot key collision, characterized by comprising:

the box body comprises side plates and a bottom plate, the side plates are connected with the bottom plate, the side plates comprise a first side plate, a second side plate, a third side plate and a fourth side plate which are sequentially connected, the first side plate and the third side plate are oppositely arranged along a first direction, the second side plate and the fourth side plate are oppositely arranged along a second direction, and the second direction is perpendicular to the first direction; the bottom plate is provided with a convex strip extending along the second direction, one end of the convex strip is connected with the second side plate, and the other end of the convex strip is connected with the fourth side plate; a first displacement sensor and a second displacement sensor are arranged on one side, close to the second side plate, of the fourth side plate;

a first slide rail extending in the first direction is arranged on one side, close to the fourth side plate, of the second side plate, one end of the first slide rail is connected with the first side plate, the other end of the first slide rail is connected with the third side plate, the first slide rail comprises a first slide rail A and a first slide rail B which are arranged in parallel, and the first slide rail B is located on one side, close to the convex strip, of the first slide rail A; the second side plate comprises a virtual center line extending in a third direction, the third direction is respectively perpendicular to the first direction and the second direction, a second slide rail extending in the first direction is further arranged on one side, close to the fourth side plate, of the second side plate, the second slide rail is located between the first slide rail A and the first slide rail B, one end of the second slide rail is connected with the first side plate, the other end of the second slide rail extends to the virtual center line, the second slide rail comprises a second slide rail A and a second slide rail B which are arranged in parallel, and the second slide rail A is located on one side, close to the first slide rail A, of the second slide rail B; a third slide rail extending in the first direction is further arranged on one side, close to the fourth side plate, of the second side plate, the third slide rail is located between the first slide rail A and the first slide rail B, one end of the third slide rail is connected with the third side plate, the other end of the third slide rail extends to the virtual center line, the third slide rail comprises a third slide rail A and a third slide rail B which are arranged in parallel, and the third slide rail A is located on one side, close to the first slide rail A, of the third slide rail B; a fourth slide rail, a fifth slide rail and a sixth slide rail are arranged on one side, close to the second side plate, of the fourth side plate, the fourth slide rail comprises a fourth slide rail A and a fourth slide rail B which are arranged in parallel, and the fourth slide rail is arranged symmetrically to the first slide rail; the fifth slide rail comprises a fifth slide rail A and a fifth slide rail B which are arranged in parallel, and the fifth slide rail and the second slide rail are symmetrically arranged; the sixth slide rail comprises a sixth slide rail A and a sixth slide rail B which are arranged in parallel, and the sixth slide rail and the third slide rail are symmetrically arranged; the first displacement sensor is not overlapped with the fourth slide rail, the fifth slide rail and the sixth slide rail along the direction vertical to the plane of the fourth side plate; the second displacement sensor is not overlapped with the fourth slide rail, the fifth slide rail and the sixth slide rail along the direction vertical to the plane of the fourth side plate;

the rollers comprise a first bottom roller, a second bottom roller, a first side roller, a second side roller, a first middle roller and a second middle roller; the first rod of the first bottom drum is connected with the first side plate, and the second rod of the first bottom drum is connected with the convex strip; the first rod of the second bottom roller is connected with the third side plate, and the second rod of the second bottom roller is connected with the convex strip; one end of the first rod in the first side roller is connected with the first sliding rail in a sliding mode, the other end of the first rod in the first side roller is connected with the fourth sliding rail in a sliding mode, one end of the second rod in the first side roller is connected with the first sliding rail in a sliding mode, and the other end of the second rod in the first side roller is connected with the fourth sliding rail in a sliding mode; one end of the first rod in the second side roller is connected with the first sliding rail in a sliding mode, the other end of the first rod in the second side roller is connected with the fourth sliding rail A in a sliding mode, one end of the second rod in the second side roller is connected with the first sliding rail B in a sliding mode, and the other end of the second rod in the second side roller is connected with the fourth sliding rail B in a sliding mode; one end of the first rod of the first middle roller is connected with the second slide rail A in a sliding manner, the other end of the first rod of the first middle roller is connected with the fifth slide rail A in a sliding manner, one end of the second rod of the first middle roller is connected with the second slide rail B in a sliding manner, and the other end of the second rod of the first middle roller is connected with the fifth slide rail B in a sliding manner; one end of the first rod of the second middle roller is connected with the third slide rail A in a sliding manner, the other end of the first rod of the second middle roller is connected with the sixth slide rail A in a sliding manner, one end of the second rod of the second middle roller is connected with the third slide rail B in a sliding manner, and the other end of the second rod of the second middle roller is connected with the sixth slide rail B in a sliding manner;

a first block, one side of which is in contact with the first side roller, wherein the first block is provided with a first notch which is in contact with the first middle roller, a groove is arranged at an included angle formed by one side of the first block, which is far away from the first side roller, and one side of the first block, which is far away from the second side plate, the first block is provided with a first acceleration sensor, and the first middle roller and the groove are not overlapped in a direction perpendicular to the plane of the first side plate; the first block and the first displacement sensor at least partially overlap along a direction perpendicular to a plane of the second side plate;

a second block, one side of which is in contact with the second side roller, wherein the second block is provided with a second notch, the second notch is in contact with the second middle roller, one side of the second block, which is far away from the second side roller, is provided with a square key, a connecting line of a central point of the groove and a central point of the square key is vertical to the third direction, the second block is provided with a second acceleration sensor, and the second block and the second displacement sensor are at least partially overlapped along a direction vertical to a plane where the second side plate is located;

2. The drum-type impact test device for block and slot key impact according to claim 1, wherein the height of the square key is less than or equal to the height of the groove along the third direction.

3. The drum-type impact test device for block and slot key impact according to claim 1, wherein the propulsion device comprises a reaction frame, the reaction frame comprises a third rod and a fourth rod which are oppositely arranged, the third rod and the fourth rod extend along the second direction and both penetrate through the second side plate, one ends of the third rod and the fourth rod, which are close to the first block, are both connected with the first baffle, and one ends of the third rod and the fourth rod, which are far away from the first block, are both connected with the second baffle;

4. The drum-type collision test device for block slot key collision according to claim 1, wherein a first speckle is sprayed on one side of the first block, which is far away from the bottom plate, and a second speckle is sprayed on one side of the second block, which is far away from the bottom plate;

5. The drum-type impact test device for block slot key impact according to claim 1, wherein the distance between any two adjacent turning rollers in the drum is smaller than the radius of the turning rollers.

6. The drum-type impact test device for block slot key impact according to claim 1, characterized in that a first dynamic strain gauge is connected between the first acceleration sensor and the first block; and a second dynamic strain gauge is connected between the second acceleration sensor and the second block.

7. A roller type impact test method for block slot key impact, which is characterized in that the roller type impact test device for block slot key impact, according to any one of claims 1-6, is adopted to carry out the test according to the following steps:

placing said first block against said propulsion means; placing the second block with a space from the fourth side plate; adjusting the first side roller and the first middle roller to clamp the first block, and adjusting the second side roller and the second middle roller to clamp the second block, so that the groove and the square key are at least partially overlapped in a direction perpendicular to a plane where the second side plate is located;

setting a preset speed of the first block;

starting the propelling device, converting potential energy of the propelling device into kinetic energy of the first block, wherein the first block moves along the direction of the second side plate pointing to the fourth side plate;

8. The drum-type impact test method for block slot key impact according to claim 7, characterized in that, the adopted drum-type impact test device for block slot key impact comprises:

calculating the compression amount of the spring according to the preset speed;

installing the wedge-shaped block, enabling one end of the wedge-shaped block to be connected with the second baffle, enabling the other end of the wedge-shaped block to be connected with the jack, loading the jack to compress the spring when the spring is in an original state, and stopping loading after the compression amount is met;

9. The drum-type impact test method for block slot key impact according to claim 7, characterized in that, the adopted drum-type impact test device for block slot key impact comprises: