CN206497657U - A kind of engineering mechanics collision test device - Google Patents

Abstract

The utility model discloses an engineering mechanics impact test device, which comprises a fixed plate, an impact plate, an impact test outer shell and a test table top. A guide rail is installed on the test table between the fixed plate and the impact plate, and the impact test shell is slid on the guide rail. A spring is installed inside the impact test shell, and one end of the spring is fixed on the impact test shell. The other end of the body wall is fixed on the sliding plate. The engineering mechanics impact test device has a simple structure and is easy to operate, and can accurately measure the maximum impact force generated in the impact test of the outer body of the impact test. The test operation is simple and convenient, and the test is accurate. High precision, easy for engineering mechanics students to observe, more vividly display the whole process of crash test, suitable for engineering mechanics teaching.

Description

A crash test device for engineering mechanics

technical field

The utility model relates to the technical field of engineering mechanics, in particular to an engineering mechanics collision test device.

Background technique

Engineering Mechanics is a discipline that cultivates the basic theoretical knowledge of mechanics, calculation and experiment ability, and guarantees to be engaged in various engineering (such as machinery, civil engineering, materials, energy, transportation, aviation, ships, water conservancy, chemical industry, etc.) The relevant scientific research, technology development, engineering design and mechanics teaching work are going on smoothly. In order to analyze the structure test more accurately and vividly, it can be simulated by the test device. In engineering mechanics, crash test is the most basic and effective method to check structural performance, and it is widely used in vehicle test engineering. The intuitive expression of the strength after completion, therefore, needs to be simulated with the help of test equipment to meet the test requirements.

Utility model content

The purpose of this utility model is to provide an engineering mechanics collision test device to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the utility model provides the following technical solutions:

An engineering mechanics impact test device, comprising a fixed plate, an impact plate, an impact test shell and a test table top, the bottom of the test table is equipped with table legs, the top of the test table is equipped with a fixed plate and an impact plate, the fixed A guide rail is installed on the test table between the board and the impact plate, and an impact test shell is slidably arranged on the guide rail. A spring is installed inside the impact test shell, and one end of the spring is fixed on the inner wall of the impact test shell and the other end Fixed on the sliding plate, the sliding plate is slidably set in the impact test shell, the spring is set on the side of the sliding plate close to the fixed plate, the side of the sliding plate close to the impact plate is connected to the impact bar, and the impact bar passes through the impact test shell The upper through hole is connected to the impact head, the top of the impact test shell is provided with a guide groove, and an indicator needle is slid inside the impact test shell, and a baffle plate is installed on the top of the impact test shell close to the fixed plate. The fixed plate is connected to the L-shaped gear bar through a shaft pin. A traction plate is installed on the top of the impact test shell near the impact plate. The traction plate is connected with a traction line, and the end of the traction line is hung with a counterweight through a hook.

As a further solution of the present invention: the fixed plate and the impact plate are respectively vertically fixed at both ends of the test table top and the fixed plate and the impact plate are arranged in parallel.

As a further solution of the present utility model: the bottom of the impact test shell is provided with a chute matching the guide rail, the cross section of the guide rail is a T-shaped structure, the cross section of the chute is a C-shaped structure, and the upper end of the guide rail is clamped in the chute , the number of the guide rails and the chute is two and symmetrically distributed on both sides of the bottom of the impact test shell.

As a further solution of the utility model: the guide groove is a long slot hole and is arranged along the sliding direction of the sliding plate, and the impact test shell outside the guide groove is provided with a force scale line.

As a further solution of the utility model: the tip of the indicator needle points to the force scale line, the indicator needle is fixed on the push block, the push block is set in the guide groove and is slidably set along the guide groove, the push block is arranged above the spring and the push block The bottom end touches the slide plate.

As a further solution of the utility model: the traction line horizontally passes through the through hole at the upper end of the impact plate and is placed on the fixed guide pulley, and the fixed guide pulley is installed on the upper side of the impact plate.

Compared with the prior art, the utility model has the beneficial effects that: the engineering mechanics impact test device has a simple structure and is easy to operate, can accurately measure the maximum impact force generated in the impact test of the impact test shell, and the test operation is simple Convenient, high test accuracy, easy for engineering mechanics students to observe, more vividly display the entire process of the crash test, suitable for engineering mechanics teaching and use.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the structural representation of the chute in the utility model.

In the figure: 1-table leg, 2-fixed plate, 3-baffle plate, 4-shaft pin, 5-L-shaped gear lever, 6-strength scale line, 7-guide groove, 8-push block, 9-indicator needle , 10-sliding plate, 11-traction plate, 12-impact head, 13-traction line, 14-through hole, 15-guiding fixed pulley, 16-impact plate, 17-hook, 18-counterweight, 19-spring , 20-impact test shell, 21-impact rod, 22-guide rail, 23-test tabletop, 24-chute.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1～2, in the utility model embodiment, a kind of engineering mechanics impact test device, comprises fixed plate 2, impact plate 16, impact test shell 20 and test desktop board 23, described test table board 23 bottoms are installed There are table legs 1, and a fixed plate 2 and an impact plate 16 are installed on the top of the test desktop plate 23, and the fixed plate 2 and the impact plate 16 are respectively vertically fixed at the two ends of the test table plate 23 and the fixed plate 2 and the impact plate 16 are arranged in parallel, A guide rail 22 is installed on the test desktop board 23 between the fixed plate 2 and the impact plate 16, and the impact test shell 20 is slidably arranged on the guide rail 22, and the bottom of the impact test shell 20 is provided with a matching guide rail 22. The chute 24, the cross section of the guide rail 22 is a T-shaped structure, the cross section of the chute 24 is a C-shaped structure, the upper end of the guide rail 22 is clamped in the chute 24, and the number of the guide rail 22 and the chute 24 is two and symmetrical Distributed on both sides of the bottom of the impact test shell 20 , increasing the stability of the impact test shell 20 sliding on the guide rail 22 .

A spring 19 is installed inside the impact test outer shell 20. One end of the spring 19 is fixed on the inner wall of the impact test outer shell 20 and the other end is fixed on the sliding plate 10. The sliding plate 10 is slidably arranged in the impact test outer shell 20. The spring 19 is arranged on the side of the sliding plate 10 close to the fixed plate 2, the side of the sliding plate 10 close to the impact plate 16 is connected with the impact rod 21, and the impact rod 21 passes through the through hole on the impact test shell 20 to connect the impact head 12, the impact The top of the test shell 20 is provided with a guide groove 7, the guide groove 7 is a long slot and arranged along the sliding direction of the sliding plate 10, the impact test shell 20 outside the guide groove 7 is provided with a force scale line 6, and the impact test shell In the body 20, an indicator needle 9 is slidably arranged, and the tip of the indicator needle 9 points to the strength scale line 6. The indicator needle 9 is fixed on the push block 8, and the push block 8 is set in the guide groove 7 and is slidably arranged along the guide groove 7. The push block 8 It is arranged above the spring 19 and the bottom end of the push block 8 is in contact with the sliding plate 10 .

The scale value on the force scale line 6 is equal to the required spring force value when the spring 19 is compressed to just below the corresponding scale.

A baffle plate 3 is installed on the top of the impact test housing 20 near the end of the fixed plate 2, and the fixed plate 2 on the upper side of the baffle plate 3 is connected to the L-shaped gear lever 5 through the shaft pin 4. When the L-shaped gear lever 5 blocks the baffle plate At 3 o'clock, the impact test outer shell 20 is fixed and cannot move away from the fixed plate 2; the top of the impact test outer shell 20 is equipped with a traction plate 11 near the impact plate 16, and the traction plate 11 is connected to the traction line 13, and the traction The line 13 horizontally passes through the through hole 14 on the upper end of the impact plate 16 and is placed on the fixed guide pulley 15. The fixed guide pulley 15 is installed on the upper side of the impact plate 16, and the end of the traction line 13 is hung with a counterweight 18 by a hook 17.

The height of the through hole 14 from the bottom end of the table leg 1 is greater than the length of the pulling line 13 .

The working principle of the utility model is: the engineering mechanics impact test device has a simple structure and is easy to operate. The L-shaped gear bar 5 blocks the baffle plate 3, and under the elastic force of the spring 19, the sliding plate 10 slides to the end of the impact test outer shell 20 close to the impact plate 16, and then exerts force to slide the indicator needle 9 to the impact plate 16 side and make the The push block 8 collides with the sliding plate 10, and then the counterweight 18 is suspended on the end of the traction line 13 through the hook 17. When testing, the L-shaped gear lever 5 is turned upward, and the L-shaped gear lever 5 is separated from the baffle plate 3. Under the traction of the wire 13, the impact test outer shell 20 slides rapidly along the guide rail 22 until the impact head 12 hits the impact plate 16. During the impact, the sliding plate 10 compresses the spring 19 to slide on the impact test outer shell 20, and at the same time, the sliding plate 10 pushes The push block 8 and the indicator pin 9 slide in the guide groove 7, and the last position where the indicator pin 9 stays is the maximum impact force generated in the impact test of the outer casing 20 of the impact test. The test operation is simple and convenient, the test accuracy is high, and it is convenient for engineering mechanics. Students observe and more vividly display the entire process of the crash test, which is suitable for the teaching of engineering mechanics.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to fall within the scope of the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only includes an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (6)

1. An engineering mechanics crash test device, comprising a fixed plate, a crash plate, an impact test shell and a test table top, is characterized in that, the bottom of the test table is equipped with table legs, and the top of the test table is equipped with a fixed plate and An impact plate, a guide rail is installed on the test table between the fixed plate and the impact plate, and an impact test shell is slid on the guide rail. A spring is installed inside the impact test shell, and one end of the spring is fixed on the impact test shell. The other end of the inner wall of the housing is fixed on the sliding plate, the sliding plate is slidably set in the impact test housing, the spring is set on the side of the sliding plate close to the fixed plate, the side of the sliding plate close to the impact plate is connected to the impact bar, and the impact bar Pass through the through hole on the impact test outer shell to connect the impact head. The top of the impact test outer shell is provided with a guide groove, and an indicator needle is slid inside the impact test outer shell. A baffle plate is installed on the top of the impact test outer shell near the fixed plate. , the fixed plate on the upper side of the baffle is connected to the L-shaped gear rod through a shaft pin, and the top of the impact test shell is installed with a traction plate near the end of the impact plate. heavy block. 2 . The crash test device for engineering mechanics according to claim 1 , wherein the fixed plate and the impact plate are respectively vertically fixed to the two ends of the test table, and the fixed plate and the impact plate are arranged in parallel. 3 . 3. A kind of engineering mechanics impact test device according to claim 1, characterized in that, the bottom of the impact test shell is provided with a chute matching the guide rail, the section of the guide rail is a T-shaped structure, and the section of the chute is It is a C-shaped structure, and the upper end of the guide rail is clamped in the chute, and the number of the guide rail and the chute is two, and they are symmetrically distributed on both sides of the bottom of the impact test shell. 4. A kind of engineering mechanics crash test device according to claim 1, characterized in that, the guide groove is a strip-shaped slot hole and is arranged along the sliding direction of the sliding plate, and the impact test outer shell outside the guide groove is provided with Velocity scale. 5. A kind of engineering mechanics crash test device according to claim 1, characterized in that, the tip of the indicator needle points to the strength scale line, the indicator needle is fixed on the push block, and the push block is set in the guide groove and along the guide groove In the sliding setting, the push block is arranged above the spring and the bottom end of the push block touches the slide plate. 6. A crash test device for engineering mechanics according to claim 1, wherein the traction line passes horizontally through the through hole at the upper end of the impact plate and is placed on the fixed guide pulley, and the fixed guide pulley is installed on the upper side of the impact plate .