Impact angle adjusting device for impact testing machine

Abstract

The application belongs to the technical field of speed loading, and discloses an impact angle adjusting device of an impact testing machine. The device comprises a pit and an adjustable base, wherein: the pit is a hollow cube, the upper surface of the pit is provided with a support, the support is matched with a rotating shaft on the side of the impact testing machine, on one hand, the support supports the impact testing machine, on the other hand, the impact testing machine rotates around the rotating shaft; the adjustable base is used for adjusting the impact angle of the impact testing machine; the adjustable base comprises a support, a first angle adjusting unit and a second angle adjusting unit, the first angle adjusting unit and the second angle adjusting unit both comprise a circular arc seat and a support frame, the upper surface of the circular arc seat is an arc-shaped track, the lower surface of the support frame is an arc-shaped bottom surface, the arc-shaped bottom surface is matched with the arc-shaped track, the position of the support frame is adjusted by sliding on the arc-shaped track, and the angle of the impact testing machine is adjusted in this way. Through the application, the problem of angle adjustment of the impact testing machine in the impact experiment is solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of speed loading, and more particularly relates to an impact angle adjusting device of an impact testing machine. BACKGROUND

[0002] An impact simulation testing machine can provide the required speed for key index testing of ice and snow sports such as short track speed skating, ice hockey and freestyle skiing. The short track speed skating, ice hockey and other sports in the horizontal plane are referred to as horizontal plane sports, which require a human body collision speed of not more than 12 m / s and a collision mass of not more than 80 Kg. The freestyle skiing and other sports in the inclined plane are referred to as inclined plane sports, which require a landing point speed of 4 m / s horizontally, a vertical component of 13.52 m / s, a total speed of about 14 m / s, and a collision mass of not more than 80 Kg. The angle between the inclined plane and the horizontal plane can be adjusted, and the maximum angle is 82°. According to the requirements of the impact simulation testing machine in different scenarios such as freestyle skiing, short track speed skating and ice hockey, the core of the impact simulation testing machine is an acceleration device. The acceleration device needs to accelerate the human body or related limbs to the required index. Due to engineering limitations, high requirements are put forward for the acceleration device.

[0003] Traditional acceleration driving modes such as free fall, pendulum, screw nut, hydraulic and pneumatic have the limitations of large structure, difficulty in implementation or low speed. Obviously, these driving modes are not suitable for acceleration devices. Therefore, a linear energy storage type impact testing machine is selected as the impact main body. In order to adapt to different test environments and sites, the impact testing machine also needs to be equipped with a corresponding impact angle adjusting device. SUMMARY

[0004] In view of the above defects or improvement needs of the prior art, the present application provides an impact angle adjusting device of an impact testing machine, which solves the problem of angle adjustment of the impact testing machine in the impact experiment.

[0005] To achieve the above-mentioned purpose, according to one aspect of the present application, an impact angle adjusting device of an impact testing machine is provided, which comprises a pit and an adjustable base, wherein:

[0006] The pit is a hollow cube, and a support is arranged on the upper surface of the pit. The support cooperates with a rotating shaft on the side of the impact testing machine. On the one hand, the support supports the impact testing machine, and on the other hand, the impact testing machine rotates around the rotating shaft. The adjustable base is used to adjust the impact angle of the impact testing machine.

[0007] The adjustable base includes a bracket, a first angle adjustment unit that fits against the side of the impact testing machine, and a second angle adjustment unit that fits against the bottom surface of the impact testing machine. Both the first and second angle adjustment units include an arc-shaped seat and a support frame. The upper surface of the arc-shaped seat is an arc-shaped track, and the lower surface of the support frame is set as an arc-shaped bottom surface. The arc-shaped bottom surface cooperates with the arc-shaped track. By sliding the support frame on the arc-shaped track, the position of the impact testing machine can be adjusted, thereby adjusting the angle of the impact testing machine.

[0008] More preferably, the arc length and central angle of the arc track of the first angle adjustment unit are the same as those of the arc bottom surface, and the arc length of the arc track of the second angle adjustment unit is greater than the arc length of the arc bottom surface.

[0009] More preferably, both the first angle adjustment unit and the second angle unit are provided with a stop block. When the position of the support frame is determined, the stop block locks the position of the support frame, thereby locking the angle of the impact testing machine.

[0010] More preferably, the bottom of the pit is provided with a ground rail, and the adjustable base moves along the ground rail to separate from the impact testing machine.

[0011] More preferably, the support is provided with an anti-rotation pin to prevent the impact testing machine from rotating during operation.

[0012] More preferably, a landing platform is also connected to the lower side of the adjustable base. After the impacted object is launched by the impact testing machine, it lands on the landing platform and slides down the landing platform.

[0013] More preferably, the bottom of the landing platform is provided with a support rod, the height of which is adjustable to adjust the tilt angle of the landing platform.

[0014] According to another aspect of the present invention, an application of the impact angle adjustment device of the impact testing machine described above in a simulated ice and snow project is provided.

[0015] In summary, the technical solutions conceived by this invention have the following beneficial effects compared with the prior art:

[0016] 1. This invention employs an adjustable base to flexibly adjust the impact angle of the impact testing machine, meeting the requirements of different impact angles. The arc fit between the arc base and the support frame facilitates fine angle adjustment (the arc fit provides smooth rotation within a very small angle range) and improves the matching accuracy between parts, facilitating assembly and reducing wear. Furthermore, the arc fit provides a more uniform load-bearing capacity, avoiding failures caused by localized stress concentration, thereby increasing the reliability and stability of the system.

[0017] 2. In this invention, a first angle unit and a second angle unit work together to adjust the impact angle. The first angle adjustment unit is equivalent to an active mechanism that controls the impact angle, while the second angle adjustment unit is equivalent to a driven mechanism that needs to be perpendicular to the former. The arc track of the first angle adjustment unit is larger to increase the contact area with the impact testing machine, while the arc track of the second angle adjustment unit is smaller because of the structural limitations of the impact testing machine to prevent interference with other structures.

[0018] 3. The pit and landing platform in this invention are designed to simulate actual ice and snow sports scenarios. On this basis, the slide rail and pivot support in the pit are special structures designed to facilitate the angle adjustment of the adjustable base. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the external structure of the impact angle adjustment device provided in the embodiments of this application;

[0020] Figure 2 This is a schematic diagram of the internal structure of the impact angle adjustment device provided in the embodiments of this application;

[0021] Figure 3 This is a schematic diagram of the pit structure according to an embodiment of this application;

[0022] Figure 4 This is a schematic diagram of the structure of the rotating shaft support according to an embodiment of this application;

[0023] Figure 5 This is a schematic diagram of the adjustable base according to an embodiment of this application;

[0024] Figure 6 This is a schematic diagram of the arc-shaped angle adjustment device according to an embodiment of this application;

[0025] Figure 7 This is a schematic diagram of the impact testing machine according to an embodiment of this application;

[0026] Figure 8 This is a schematic diagram of the landing platform according to an embodiment of this application;

[0027] Figure 9 This is a schematic diagram of the structure of the horizontal base according to an embodiment of this application.

[0028] In all the accompanying drawings, the same reference numerals are used to denote the same elements or structures, wherein:

[0029] 1-Pit, 2-Adjustable base, 3-Landing platform, 4-Impact testing machine, 5-Bracket, 6-First angle adjustment unit, 7-Second angle adjustment unit, 8-Arc seat, 9-Support frame, 10-Arc track, 11-Arc bottom surface, 12-Stop block, 13-Ground rail, 14-Anti-rotation pin, 15-Support rod, 16-Support, 17-Rotating shaft. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0031] An impact angle adjustment device for an impact testing machine 4 includes: a pit 11, with a ground track 13 laid at the bottom of the pit 1 and supports 16 symmetrically installed on both sides of the ground; an adjustable base 2, with track wheels installed at the bottom of the adjustable base 2, and a first angle adjustment unit 6 and a second angle adjustment unit 7 respectively installed on the inner bottom surface and the inner side surface; the impact testing machine 4 is a linear energy storage type testing machine, with rotating shafts 17 symmetrically installed on the left and right sides; and a landing platform 3 with lockable universal wheels installed at the bottom and a special material covered on the top to simulate the landing environment.

[0032] Preferably, a ground track 13 is laid at the bottom of the pit 1 to house the adjustable base 2 and the landing platform 3, while also facilitating the movement of the adjustable base 2, which is equipped with track wheels, along the ground track 13. Supports 16 are symmetrically installed on both sides of the pit 1 to support the impact testing machine 4. The main body of the testing machine can rotate around the support to adjust the impact angle. Anti-rotation pins 14 are installed on both sides of the support 16 to prevent the impact testing machine 4 from rotating during operation.

[0033] like Figure 5 As shown, the adjustable base 2 is welded with channel steel, covered with steel plates on the upper and lower sides, and reinforced with reinforcing ribs to enhance rigidity. The bottom of the adjustable base 2 is equipped with track wheels, which can slide along the track in the pit 1. The first angle adjustment unit 6 and the second angle adjustment unit 7 can adjust the impact angle of the impact testing machine 4. Both the first angle adjustment unit 6 and the second angle adjustment unit 7 are composed of an arc seat 8, a stop block 12, and a support frame 9. The arc seat 8 is fixed to the adjustable base 2. The upper surface of the arc seat 8 is an arc track 10, and the lower bottom surface of the support frame 9 is an arc bottom surface 11. The arc bottom surface 11 cooperates with the arc track 10 and slides on the arc track 10. The two can slide relative to each other to adjust the impact angle. The stop block 12 is used to lock the arc seat 8 and the support frame 9 to fix the impact angle.

[0034] like Figure 7As shown, the impact testing machine 4 is a linear energy storage type impact testing machine, and the impact energy stored therein has a simple functional relationship with the displacement of the elastic element, which is easy to achieve quantitative control. The left and right sides of the impact testing machine 4 are symmetrically mounted with rotating shafts 17, which pass through the center of gravity of the impact testing machine 4 and provide support for the impact testing machine 4.

[0035] like Figure 8 As shown, landing platform 3 is made of aluminum profile and covered with a 20mm thick high-speed dry snow blanket (low-density high-pressure polyethylene) to simulate a snow surface. Eight locking casters are installed at the bottom. The tilt angle of landing platform 3 can be adjusted by turning a knob to adjust the height of the support rod 15.

[0036] The impact angle adjustment device provided by this invention achieves its function as follows:

[0037] First, determine the impact angle according to the test requirements. Install the landing platform 3 and the adjustable base 2 in the pit 1. Next, place the rotating shaft 17 of the impact testing machine 4 on the supports 16 on both sides of the pit 1. Move the adjustable base 2 so that its inner bottom surface and inner side support frame 9 are both in contact with and supported by the impact testing machine 4. Then, adjust the first angle adjustment unit 6 and the second angle adjustment unit 7 to make the impact angle (the impact angle is consistent with the angle of the first angle adjustment unit; the first angle adjustment unit is equivalent to an active mechanism that controls the impact angle, while the second angle adjustment unit is equivalent to a driven mechanism and needs to be perpendicular to the former) and lock it using the stop block 12. Next, fix the adjustable base 2 and insert the anti-rotation pin, thus completing the preparation before the impact test. When it is necessary to adjust the impact angle, simply loosen the anti-rotation pin and the stop block 12 to make the adjustment.

[0038] It should be noted that when performing horizontal impacts, the adjustable base 2 can be directly used as follows: Figure 9 The flat plate structure shown.

[0039] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An impact angle adjustment device for an impact testing machine, characterized in that, The device includes a pit (1) and an adjustable base (2), wherein: The pit (1) is a hollow cube with a support (16) on its upper surface. The support (16) cooperates with the rotating shaft (17) on the side of the impact testing machine. On the one hand, the support (16) supports the impact testing machine (4), and on the other hand, the impact testing machine (4) rotates around the rotating shaft (17). The adjustable base (2) is used to adjust the impact angle of the impact testing machine (4). The adjustable base (2) includes a bracket (5), a first angle adjustment unit (6) mounted on the bracket and in contact with the side of the impact testing machine, and a second angle adjustment unit (7) in contact with the bottom of the impact testing machine. The first angle adjustment unit (6) and the second angle adjustment unit (7) each include an arc seat (8) and a support frame (9). The upper surface of the arc seat (8) is an arc track (10), and the lower surface of the support frame (9) is an arc bottom surface (11). The arc bottom surface cooperates with the arc track (10). The position of the support frame (9) is adjusted by sliding on the arc track (10), thereby adjusting the angle of the impact testing machine. The arc length and central angle of the arc track (10) of the first angle adjustment unit (6) are the same as those of the arc bottom surface (11), and the arc length of the arc track (10) of the second angle adjustment unit (7) is greater than that of the arc bottom surface (11). The bottom of the pit (1) is provided with a ground rail (13), and the adjustable base (2) moves along the ground rail (13) to separate from the impact testing machine; The support (16) is provided with an anti-rotation pin (14) to prevent the impact testing machine from rotating during operation; The adjustable base (2) is also connected to a landing platform (3) at its lower side. After the impacted object is launched by the impact testing machine, it lands on the landing platform (3) and slides down the landing platform (3). The bottom of the landing platform (3) is provided with a support rod (15), the height of which is adjustable to adjust the tilt angle of the landing platform (3); The impact testing machine can provide the necessary speed for testing key indicators of wearable equipment in ice and snow sports; the impact testing machine is a linear energy storage type impact testing machine.

2. The impact angle adjustment device of the impact testing machine as described in claim 1, characterized in that, Both the first angle adjustment unit (6) and the second angle adjustment unit are provided with a stop block (12). When the position of the support frame (9) is determined, the stop block (12) locks the position of the support frame (9) to lock the angle of the impact testing machine.

3. The application of the impact angle adjustment device of the impact testing machine according to any one of claims 1-2 in a simulated ice and snow project.

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