CN105388024B - A suspension bracket dynamic impact test tool - Google Patents

Abstract

The invention relates to a suspension bracket dynamic impact test tool, which relates to a suspension bracket test tool, comprising a suspension bracket mounting seat for installing the suspension bracket, an impact transmission shaft installed and matched with the suspension bracket, an impact bearing structure and limiting structure, the shock bearing structure includes two support plates on both sides of the suspension bracket connected with the shock transmission shaft and a web connecting the two support plates together for limiting the impact The limiting structure for bearing the rotation of the structure is located between the mounting seat of the suspension bracket and the impact bearing structure. The present invention provides a method to obtain the impact of a single structure during a vehicle collision by performing a single test in the early stage of product development. Tooling for failure deformation and structural mechanical properties.

Description

A suspension bracket dynamic impact test tool

technical field

The invention relates to a suspension bracket testing tool; in particular, it relates to a suspension bracket dynamic impact testing tool.

Background technique

Car frontal collision is the most frequent type of safety accident, and a large part of the development of car safety performance is invested in the development of frontal collision safety performance. In the process of vehicle collision, the fracture and deformation of some main structures will have a great impact on the collision results, such as the fracture of the engine mount. However, the existing technical conditions are difficult to accurately simulate the fracture behavior of casting structures such as engine mounts. The conventional method is to define the mount not to break at the early stage of design or to define a specific time mount failure based on experience. It will greatly reduce the accuracy of vehicle collision simulation.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a tooling that can perform a single test in the early stage of product development to obtain the impact failure deformation and structural mechanical properties of a single structure during a vehicle collision.

In order to achieve the above effects, the present invention provides a suspension bracket dynamic impact test tool, including a suspension bracket mounting seat for installing the suspension bracket, an impact transmission shaft mounted and matched with the suspension bracket, an impact bearing structure and Limiting structure, the impact bearing structure includes two support plates on both sides of the suspension bracket connected with the impact transmission shaft and a web connecting the two support plates together, for limiting the impact bearing structure The rotating limiting structure is located between the mounting seat of the suspension bracket and the impact bearing structure.

Further, the anti-rotation guide structure includes a guide portion located on the mounting seat of the suspension bracket and an anti-rotation member located on the impact-bearing structure to cooperate with it; the cooperation of the guide portion and the anti-rotation member can prevent impact bearing When the structure is impacted, it will not rotate relative to the suspension bracket. At the same time, after the impact-bearing structure is deformed by the impact, the anti-rotation member can slide in the guide part to adapt to the deformation of the impact-bearing structure, and it also avoids the impact-bearing structure to limit the impact. At the same time, the cooperation of the guide part and the anti-rotation part can weaken the effect of the impact force in other directions on the suspension bracket.

Further, the guide part is a chute opened on the side wall of the mounting seat of the suspension bracket, and the anti-rotation member is a slider matched with the chute; the chute is opened on the mounting seat of the suspension bracket, and the structure is Simple.

Further, the guide portion is a slide rail connected to the mounting seat of the suspension bracket, and the anti-rotation member is a guide shoe matched with the slide rail, which has a simple structure and is easy to purchase.

Further, the slider is a guide rod passing through the two support plates of the impact bearing structure, and both ends of the guide rod extend into the chute; the guide rod is used as the slider, and the structure is simple.

Further, the two ends of the shock transmission shaft are provided with axial limiters. The arrangement of the limiters can prevent the shock transfer shaft from moving away from the suspension bracket or the shock bearing structure after the shock transfer shaft is impacted by the outside world.

Further, the axial limit member is a limit stop pin connected to both ends of the impact transmission shaft; the limit stop pin is arranged to facilitate disassembly and replacement, and at the same time, it can meet the axial limit of the impact transmission shaft.

Further, the axial limiting member is screwed to limit blocks at both ends of the impact transmission shaft; the screwed connection is convenient and reliable.

Further, a horizontal adjustment washer is arranged between the suspension bracket and the suspension bracket mounting seat, and the setting of the horizontal adjustment washer can adjust the horizontal arrangement of the suspension bracket to reach the level of the suspension bracket after the actual installation. layout location.

Further, the mounting seat of the suspension bracket is provided with a fixing hole for connecting the mounting seat of the suspension bracket to the collision trolley; utilization.

The beneficial effects of the present invention are as follows: the present invention realizes the simulated collision of a single suspension bracket by replacing the suspension bracket, thereby obtaining the impact failure deformation of the single suspension bracket to obtain its structural mechanical properties, and applying it to the vehicle crash model It can effectively improve the collision simulation accuracy of the whole vehicle in the early design stage, saving design time and development cost; at the same time, it can also provide a good experimental environment for dynamic performance testing, ensure the reliability of the test, and provide possible results for the later finite element simulation. According to the experimental data of the letter, at the same time, the suspension brackets of different types and structures can be simulated crash tests by replacing the suspension brackets.

Description of drawings

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments:

Fig. 1 is the structural schematic diagram of the suspension bracket mounting seat;

Fig. 2 is the structural schematic diagram of the impact bearing structure;

Figure 3 is a schematic diagram of the connection structure of the impact transmission shaft and the limit stop pin;

4 is a schematic diagram of the overall structure of the suspension bracket;

5 is a schematic diagram of the overall mechanism of a suspension bracket dynamic impact test tool of the present invention;

Fig. 6 is the movement schematic diagram of this tooling;

In the figure: 1-shock transmission shaft, 2-shock bearing structure, 21-support plate, 22-connection hole, 23-web plate, 3-suspension bracket, 31-installation hole, 32-base, 4-suspension bracket Mounting seat, 41-connecting plate, 42-fixing hole, 43-chute, 5-guide rod, 6-bolt, 7-level adjustment washer, 8-limit stopper pin, 9-collision trolley, 10-collision barrier .

specific embodiment

The invention is a suspension bracket dynamic impact test tool, which is mainly used for the simulation test of a single suspension bracket in the early stage of product development, so as to obtain the structure of the suspension bracket through the impact failure deformation of the single suspension bracket in the collision test. mechanical properties.

A suspension bracket dynamic impact test tool includes an impact transmission shaft 1, an impact bearing structure 2, a suspension bracket 3, a suspension bracket mounting seat 4, and a limit structure; the structure of the suspension bracket 3 is shown in Figure 1. A mounting hole 31 for matching with the impact transmission shaft 1 is reserved on the mounting bracket 3, and a base 32 for mounting and matching with the mounting seat 4 of the mounting bracket is provided at the bottom of the mounting bracket 3; Slot-shaped, a connecting plate 41 is provided at one end of the groove, the suspension bracket mounting seat 4 is installed on the collision trolley 9 through the fixed holes 42 reserved on the connecting plate 41, and the impact bearing structure 2 includes two parallel to each other. The support plates 21, two parallel support plates 21 are provided with connecting holes 22 matched with the impact transmission shaft 1, and the two support plates 21 are connected by a web 23 perpendicular to them. The suspension bracket mounting seat 4 is installed on the collision trolley 9 through the fixing hole 42, and the base 32 of the suspension bracket 3 and the bottom of the groove of the suspension bracket mounting seat 4 are connected and fixed by bolts 6. In order to make the base 32 level, on the base A horizontal adjustment washer 7 is arranged under the 32; an impact transmission shaft 1 is arranged in the mounting hole 31 of the suspension bracket 3, and an impact bearing structure 2 is installed on both sides of the mounting hole 31 on the impact transmission shaft 1. The impact bearing structure The two support plates 21 of 2 are respectively located on both sides of the installation hole 31. In order to prevent the shock transmission shaft 1 from being detached from the suspension bracket 3 or the shock bearing structure 2, a limit stop pin 8 is provided at both ends of the shock transmission shaft 1. Since the force test of the suspension bracket 3 is the horizontal force of the suspension bracket 3 in the normal use and installation state, a limiting structure is provided to eliminate the rotation of the impact bearing structure 2 due to gravity or collision vibration; the limiting structure includes A guide rod 5 passing through the two support plates 21 of the impact bearing structure 2, and two opposite sliding grooves 43 opened on the two inner walls of the groove of the suspension bracket mounting base 4. The sliding grooves 43 extend horizontally and guide Both ends of the rod 5 extend into the chute 43 and can move along the chute 43 under the driving force of the impact bearing structure 2 being deformed by force.

The above-mentioned limiting structure can also be other structures, as long as it can move horizontally under the force of deformation of the impact-bearing structure 2, and at the same time can support and prevent the rotation of the impact-bearing structure 2. For example, the limiting structure includes: The slide rail and its matching slider, the slide rail is installed on the two opposite parallel vertical surfaces of the groove of the suspension bracket mounting seat 4, and the slider is installed on the impact bearing structure 2; or the positions of the two are interchanged, and the slide The block is installed on the mounting seat 4 of the suspension bracket, and the guide rail is installed on the impact bearing structure 2 .

As mentioned above, limit stop pins 8 are arranged at both ends of the shock transmission shaft 1 to prevent the shock transmission shaft 1 from being detached from the suspension bracket 3 or the shock receiving structure 2. Of course, this structure can also be other structures, as long as it can reach the correct position. The limit of the shock transmission shaft 1 is sufficient. For example, a limit block protrudes from one end of the shock transmission shaft 1, and a limit pin is used at the other end; a limit block protrudes from one end of the shock transmission shaft 1, and a threaded connection position, etc., or both ends are screwed with limit blocks, etc.

Referring to FIG. 6 , the test simulation of a suspension bracket dynamic impact test tool of the present invention, the collision trolley 9 installed with the tool of the present invention drives the tool to move to the right to hit the collision barrier 10 , and the impact bearing structure 2 is perpendicular to the collision barrier 10 In the collision, the impact bearing structure 2 receives the force of the collision barrier 10 and transmits the impact force to the impact transmission shaft 1, and the impact transmission shaft 1 acts on the suspension bracket 3, thereby realizing the simulation of a single suspension bracket 3 in the crash test. The simulation of the impact failure deformation of the system can obtain its structural mechanical properties, so as to facilitate the later optimization of its structure.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, some modifications and improvements can be made without departing from the concept of the present invention, and these should also be regarded as the present invention. The scope of protection, these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims (6)

1. A suspension bracket dynamic impact test tool, characterized in that it comprises a suspension bracket mounting seat (4) for installing a suspension bracket (3), an impact transmission that is installed and matched with the suspension bracket (3) A shaft (1), an impact bearing structure (2) and an anti-rotation guide structure, the impact bearing structure (2) includes two supports on both sides of the suspension bracket (3) connected to the impact transmission shaft (1) The plate (21) and the web (23) connecting the two support plates (21) together, the anti-rotation guide structure for restricting the rotation of the impact bearing structure (2) is located at the mounting seat of the suspension bracket (4) and the impact bearing structure (2); The anti-rotation guide structure includes a guide portion located on the suspension bracket mounting seat (4) and an anti-rotation member located on the impact bearing structure (2) to cooperate with it; The guide portion is a chute (43) opened on the side wall of the suspension bracket mounting seat (4), and the anti-rotation member is a slider matched with the chute (43); or the guide portion is a slide rail connected to the suspension bracket mounting seat (4), and the anti-rotation member is a guide shoe matched with the slide rail; Axial limiting members are provided at both ends of the impact transmission shaft (1). 2. The suspension bracket dynamic impact test tool according to claim 1, wherein the slider is a guide rod (5) passing through the two support plates (21) of the impact bearing structure (2). , both ends of the guide rod (5) extend into the chute (43). 3. The suspension bracket dynamic impact test tool according to claim 1, characterized in that, the axial limit member is a limit stop pin (8) connected to both ends of the impact transmission shaft (1). 4. The suspension bracket dynamic impact test tool according to claim 1, characterized in that, the axial limiter is a limiter block threadedly connected at both ends of the impact transmission shaft (1). 5. The suspension bracket dynamic impact test tool according to claim 1, characterized in that, a level adjustment washer (7) is provided between the suspension bracket (3) and the suspension bracket mounting seat (4). ). 6 . The suspension bracket dynamic impact test tool according to claim 1 , wherein the suspension bracket mounting seat ( 4 ) is provided with a device for connecting the suspension bracket mounting seat ( 4 ) to the collision trolley ( 6 . 9) on the fixing hole (42).

Images