A groove impact testing device

Abstract

This utility model belongs to the technical field of safety net impact resistance testing, specifically a chute impact testing device, including a test platform and a mounting frame, and an impact ball for testing the safety net on the mounting frame. An arc-shaped stainless steel chute is fixed to the test platform via a fixing plate. A guardrail is hinged to the upper end of the stainless steel chute to keep the impact ball stationary at the top of the chute. This utility model solves the problem of many uncertainties in safety net impact testing on the market and reduces errors during testing. It enables the release of the test ball at a fixed height and stationary position to test the safety net, thereby improving the accuracy and reliability of test data and laying a foundation for safe production through precise experiments.

Description

Technical Field

[0001] This utility model belongs to the field of safety net impact resistance testing technology, and in particular relates to a chute impact testing device. Background Technology

[0002] Safety nets are protective equipment used to prevent fall injuries. They have a wide range of applications and are mostly used in various high-altitude operations, especially in the construction of various high-altitude buildings.

[0003] During work at heights, falls can cause injuries of varying degrees, the severity of which varies depending on the distance of the fall, ranging from minor disability to death. Therefore, testing the impact resistance of safety nets is particularly important.

[0004] However, the impact resistance test for safety nets on the market only requires raising the test ball to a fixed height and then releasing it freely. Therefore, there are many uncertainties and unavoidable errors in the test process, such as whether the release height meets the standard, whether the initial velocity is 0, and whether the release is smooth.

[0005] The current standard only requires the use of a smooth steel ball with a diameter of 500±10mm and a mass of 100±1kg for testing, and to lift it to a certain height during the test. However, in actual application, it is difficult to achieve a high lifting height with a smooth and uniform sphere, the actual lifting height is difficult to define, and it cannot be guaranteed that the sphere is stationary before release.

[0006] To address the aforementioned problems, this application proposes a chute impact testing device. Utility Model Content

[0007] The purpose of this invention is to provide a chute impact testing device that solves the problems mentioned in the background art.

[0008] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0009] This utility model relates to a chute impact testing device, comprising a test platform and a mounting frame, and an impact ball for testing a safety net on the mounting frame. An arc-shaped stainless steel chute is fixed on the test platform by a fixing plate, and a guard plate is hinged to the upper end of the stainless steel chute to keep the impact ball stationary at the top of the stainless steel chute.

[0010] Furthermore, the stainless steel chute has a U-shaped cross-section and a step on the top inner side, the distance between the step and the railing being less than the diameter of the impact ball.

[0011] Furthermore, the upper end of the stainless steel chute is fixed with a bearing seat that is hinged to the guardrail, and the other end of the guardrail and the stainless steel chute are provided with a pin to horizontally lock the guardrail on the stainless steel chute.

[0012] Furthermore, the panel has a through hole, the stainless steel slide has a positioning hole relative to the bearing seat, and the pin passes through the through hole and is inserted into the positioning hole.

[0013] Furthermore, a pull ring is fixed to the other end of the pin.

[0014] Furthermore, the impact ball has a groove, and a lifting lug is fixed in the groove.

[0015] Furthermore, a staircase is provided on the side of the test platform.

[0016] This utility model has the following beneficial effects:

[0017] This invention addresses the numerous uncertainties in current safety net impact testing methods and reduces errors during testing. It enables the release of a test ball from a fixed height and at a stationary position to test the safety net, thereby improving the accuracy and reliability of test data and laying a foundation for safe production through precise experiments. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model;

[0020] Figure 2 for Figure 1 A structural diagram viewed from below;

[0021] Figure 3 for Figure 1 A schematic diagram of the structure of a ball falling freely in mid-air.

[0022] Figure 4 for Figure 1 A structural diagram viewed from the right;

[0023] Figure 5 A structural diagram showing the disassembled connection of the stainless steel chute, impact ball, and guardrail.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] In the diagram: 1. Test bench; 11. Fixing plate; 12. Staircase; 2. Stainless steel chute; 21. Step; 22. Shaft seat; 23. Positioning hole; 3. Mounting bracket; 31. Safety net; 4. Impact ball; 41. Sinking trough; 42. Lifting lug; 5. Balustrade; 51. Through hole; 6. Pin; 61. Pull ring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Please see Figure 1 - Figure 5 As shown, this utility model is a chute impact testing device, including a test platform 1 and a mounting frame 3, and an impact ball 4 for testing the safety net 31 on the mounting frame 3. The impact ball 4 is a uniform steel ball with a diameter of 500mm and a mass of 100kg.

[0029] An arc-shaped stainless steel chute 2 is fixed on the test bench 1 by a fixing plate 11. A guardrail 5 is hinged to the upper end of the stainless steel chute 2 to keep the impact ball 4 stationary at the top of the stainless steel chute 2.

[0030] Specifically, the stainless steel chute 2 has a U-shaped cross section. In order to prevent the impact ball 4 from falling when it is stationary, a step 21 is provided on the top of the inner side of the stainless steel chute 2. The distance between the step 21 and the guardrail 5 is smaller than the diameter of the impact ball 4, thereby ensuring that the impact ball 4 is stationary before the test.

[0031] Specifically, the upper end of the stainless steel slide 2 is fixed with a bearing 22 and hinged to the railing 5. The stainless steel slide 2 has a reserved space for the railing 5 to rotate downward through the hinge point between the bearing 22 and the railing 5. That is to say, when the pin 6 is disengaged, the railing 5 can automatically rotate downward under the action of gravity. The other end of the railing 5 and the stainless steel slide 2 are provided with a pin 6 to horizontally lock the railing 5 on the stainless steel slide 2.

[0032] Specifically, the guardrail 5 has a through hole 51, and the stainless steel slide 2 has a positioning hole 23 relative to the bearing 22. The pin 6 passes through the through hole 51 and is inserted into the positioning hole 23. At this time, the guardrail 5 is in a horizontal fixed state on the stainless steel slide 2, which is used to intercept the impact ball 4 to a stationary state.

[0033] Furthermore, in order to facilitate the release of the locking pin 6, a pull ring 61 is fixed to the other end of the pin 6. In actual use, a steel wire rope can pass through the pull ring 61, and the pin 6 can be released from the through hole 51 and the positioning hole 23 by pulling with a tower crane or manually. The steel wire rope can extend the operating distance and ensure safety.

[0034] Specifically, the impact ball 4 has a groove 41, and a lifting lug 42 is fixed in the groove 41. In this embodiment, the inward groove 41 will not affect the normal rolling of the impact ball 4, and the welded and fixed lifting lug 42 facilitates the lifting by the tower crane.

[0035] Furthermore, for ease of maintenance, a staircase 12 is provided on the side of the test bench 1; at the same time, to ensure safety, a guardrail is provided on the top of the test bench 1.

[0036] A specific application of this embodiment is as follows: Before the test begins, the hook on the tower crane is passed through the lifting lug 42 and raised to a higher height. The impact ball 4 is placed between the step 21 and the railing 5. At this time, since the gap between the step 21 and the railing 5 is smaller than the diameter of the impact ball 4, it can be ensured that the impact ball 4 is in a stationary state, that is, the initial velocity is 0. The hook on the tower crane is then detached, and the wire rope is passed through the pull ring 61 and hung on the tower crane hook.

[0037] At the start of the experiment, the pull ring 61 is pulled by the tower crane to disengage the pin 6 from the positioning hole 23 and the through hole 51. At this time, the guardrail 5 rotates downward along the bearing 22 under gravity, and the impact ball 4 is released from the stationary state. After passing through the stainless steel slide 2, it impacts the safety net 31 installed on the mounting frame 3 at a horizontal speed to test the impact resistance of the safety net 31.

[0038] In the description of this specification, references to terms such as "an embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A chute impact testing apparatus, comprising a test bench (1) and a mounting frame (3), and an impact ball (4) for testing a safety net (31) on the mounting frame (3), characterized in that: The test bench (1) is fixed with an arc-shaped stainless steel chute (2) by a fixing plate (11). The upper end of the stainless steel chute (2) is hinged with a guard plate (5) to keep the impact ball (4) stationary at the top of the stainless steel chute (2).

2. The chute impact testing device according to claim 1, characterized in that: The stainless steel chute (2) has a U-shaped cross section and a step (21) is provided on the top of the inner side. The distance between the step (21) and the railing (5) is less than the diameter of the impact ball (4).

3. The chute impact testing device according to claim 1, characterized in that: The upper end of the stainless steel slide (2) is fixed with a bearing seat (22) and hinged to the guardrail (5). The other end of the guardrail (5) and the stainless steel slide (2) are provided with a pin (6) to horizontally lock the guardrail (5) on the stainless steel slide (2).

4. The chute impact testing device according to claim 3, characterized in that: The panel (5) has a through hole (51), and the stainless steel slide (2) has a positioning hole (23) relative to the bearing (22). The pin (6) passes through the through hole (51) and is inserted into the positioning hole (23).

5. The chute impact testing device according to claim 4, characterized in that: The other end of the pin (6) is fixed with a pull ring (61).

6. The chute impact testing device according to claim 1, characterized in that: The impact ball (4) has a sinker (41) and a lifting lug (42) is fixed in the sinker (41).

7. The chute impact testing device according to claim 1, characterized in that: A staircase (12) is provided on the side of the test bench (1).

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