Height-adjustable free falling body testing machine

Abstract

The utility model discloses a height-adjustable free falling body testing machine, which relates to the technical field of falling experiments and comprises a stand column support, the stand column support comprises four supporting rods distributed in a rectangular shape, the top of the stand column support is fixedly connected with a connecting frame, and the connecting frame is connected with a lifting push rod motor. The lifting push rod motor is connected with an encoder and a stroke limiting device, and the output end of the lifting push rod motor is connected with a lifting plate. During use, the lifting push rod motor is arranged and is matched with the encoder, so that the lifting height of the lifting plate driven by the lifting push rod motor can be flexibly increased, the height of the release assembly can be flexibly adjusted, and a free fall test can be performed on a product at various different heights; and the falling height and the impact strength which can be borne by the product during falling can be more accurately detected, so that the flexibility of the free falling body testing machine and the accuracy of a testing result are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drop experiments, in particular to a height-adjustable free-fall testing machine. Background Art

[0002] A free fall tester, also known as a drop tester, is used to simulate the state of a product falling from a height to the ground, thereby understanding the damage to the product and evaluating the drop height and impact strength that the product can withstand when falling.

[0003] Based on the drop height and impact strength that the product can withstand when falling, as measured during the drop test, operating procedures for the transportation and installation of related products can be formulated to ensure that the product is at a relatively safe height during the entire transportation or installation process, thereby avoiding serious damage to the product due to falling during transportation or installation.

[0004] The principle of a drop test is to lift a product to a specified height and then let it freely fall onto a hard, flat surface to assess the product's ability to withstand vertical impact. However, the test height of existing free-fall testers is fixed, but in order to obtain more accurate test results, the height of the product's free fall needs to be constantly adjusted. This results in poor flexibility of the free-fall tester and reduces the accuracy of the test results. Utility Model Content

[0005] The purpose of the present utility model is to provide a height-adjustable free fall testing machine to solve the problem in the above-mentioned background technology that the existing free fall testing machine cannot flexibly adjust the height of the product's free fall, resulting in poor flexibility of the free fall testing machine and reduced accuracy of the test results.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a height-adjustable free-fall testing machine, comprising a column bracket, the column bracket comprising four support rods distributed in a rectangular shape, a connecting frame fixedly connected to the top of the column bracket, a lifting push rod motor connected to the connecting frame, an encoder and a stroke limit device connected to the lifting push rod motor, a lifting plate connected to the output end of the lifting push rod motor, a guide assembly provided on the column bracket, the lifting plate connected to the guide assembly, and a release assembly connected to the lifting plate;

[0007] The guide assembly is used to guide the lifting plate to move up and down along the four support rods of the column bracket;

[0008] The release assembly is used to release the product from a preset height to allow it to fall freely.

[0009] Preferably, the guide assembly includes two groups of wear-resistant guide shoes distributed symmetrically on the left and right, the two groups of wear-resistant guide shoes are connected to the lifting plate, and the two groups of wear-resistant guide shoes are respectively fitted with the close sides of the two pairs of support rods. The advantage of this arrangement is that through the guiding effect of the two groups of wear-resistant guide shoes, the product can be stably lifted and lowered along the height direction of the column bracket, ensuring that the free fall test is carried out safely and stably, thereby improving the practicality and reliability of the testing machine.

[0010] Preferably, the guide assembly also includes a fixing frame, and the number of each group of wear-resistant guide shoes is two. The top of the fixing frame is fixedly connected to the bottom surfaces of the two upper wear-resistant guide shoes, and the bottom of the fixing frame is fixedly connected to the top surfaces of the two lower wear-resistant guide shoes. The lifting plate is fixedly connected to the top of the fixing frame. The advantage of this arrangement is that the structural stability and firmness of the guide assembly can be improved by fixing the fixing frame and the two groups of wear-resistant guide shoes. In this way, it can be ensured that the guide assembly can stably support the lifting plate and the release assembly and reliably guide the lifting plate and the release assembly, thereby ensuring that the product falling height adjustment work is carried out stably and reliably, thereby improving the reliability and stability of the testing machine.

[0011] Preferably, the release assembly includes a placement plate fixedly connected to the front of the lifting plate, and the release assembly also includes a transverse push rod motor fixedly connected to the top of the lifting plate. The output end of the transverse push rod motor is fixedly connected to a push plate, and the push plate is located above the lifting plate. The push plate is pushed forward by the transverse push rod motor, and the push plate will push the product to fall from the placement plate. In this way, it is only necessary to place the product at a suitable position on the top of the placement plate to ensure smooth free fall movement of the product. This can simplify the test operation of the testing machine and effectively improve the test efficiency of the testing machine.

[0012] Preferably, the release assembly also includes two guide bars fixedly connected to the placement plate symmetrically on the left and right, and the length direction of the guide bars is parallel to the length direction of the placement plate. The release assembly also includes a positioning guide sleeve fixedly connected to the top of the placement plate, and the push rod of the transverse push rod motor is movably sleeved in the positioning guide sleeve.

[0013] Preferably, the top of the lifting push rod motor is hinged to the connecting frame through a pin, the top of the lifting plate is fixedly connected to a lifting ring, and the output end of the lifting push rod motor is hinged to the lifting ring. The advantage of this arrangement is that the lifting push rod motor, the connecting frame and the lifting plate can all rotate at a certain angle. In this way, when the connecting frame and the column bracket are slightly swung and deformed during testing, the lifting push rod motor can still stably and reliably drive the lifting plate to rise and fall, and at the same time avoid the lifting push rod motor from being subjected to torsional force due to the deformation of the connecting frame and the column bracket, thereby ensuring the safety of the lifting push rod motor and further improving the reliability of the testing machine.

[0014] In summary, the technical effects and advantages of the utility model are:

[0015] 1. In the present invention, by setting up a lifting push rod motor and cooperating with an encoder, the height of the lifting plate driven by the lifting push rod motor can be flexibly increased, thereby being able to flexibly adjust the height of the release component. In this way, the product can be free-fall tested at various heights, and the falling height and impact strength that the product can withstand when falling can be more accurately detected, thereby improving the flexibility of the free-fall testing machine and the accuracy of the test results.

[0016] 2. In the present invention, the fixed frame is fixedly connected to the two sets of wear-resistant guide shoes, which can improve the structural stability and firmness of the guide assembly. In this way, it can be ensured that the guide assembly can stably support the lifting plate and the release assembly and reliably guide the lifting plate and the release assembly, thereby ensuring that the product falling height adjustment work is carried out stably and reliably, thereby improving the reliability and stability of the testing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a structural diagram of a height-adjustable free-fall testing machine in an embodiment of the present utility model;

[0019] Figure 2 This is a rear view of a height-adjustable free-fall testing machine in an embodiment of the present utility model;

[0020] Figure 3 This is a right side view of a height-adjustable free-fall testing machine in an embodiment of the present utility model;

[0021] Figure 4 In the embodiment of the present utility model Figure 1 A magnified schematic diagram of point A in the middle;

[0022] Figure 5 In the embodiment of the present utility model Figure 1 Enlarged schematic diagram of point B in the middle.

[0023] In the figure: 1. Column bracket; 2. Connecting frame; 3. Lifting push rod motor; 31. Latch; 32. Lifting ring; 4. Lifting plate; 5. Guide assembly; 51. Wear-resistant guide shoe; 52. Fixing frame; 6. Release assembly; 61. Placement plate; 62. Horizontal push rod motor; 63. Push plate; 64. Guide bar; 65. Positioning guide sleeve. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Example 1

[0026] Please refer to Figure 1-Figure 5 The height-adjustable free-fall tester shown includes a column bracket 1, which includes four support rods distributed in a rectangular shape. The top of the column bracket 1 is fixedly connected to a connecting frame 2, to which a lifting push rod motor 3 is connected. The lifting push rod motor 3 is connected to an encoder and a travel limit device. The output end of the lifting push rod motor 3 is connected to a lifting plate 4. The machine also includes a guide assembly 5 provided on the column bracket 1, the lifting plate 4 is connected to the guide assembly 5, and the lifting plate 4 is connected to a release assembly 6.

[0027] The guide assembly 5 is used to guide the lifting plate 4 to move up and down along the four support rods of the column bracket 1;

[0028] The release assembly 6 is used to release the product from a preset height to allow it to fall freely.

[0029] refer to Figure 1-Figure 5 The guide assembly 5 includes two groups of wear-resistant guide shoes 51 symmetrically distributed on the left and right. The two groups of wear-resistant guide shoes 51 are connected to the lifting plate 4. The two groups of wear-resistant guide shoes 51 are respectively fitted with the side surfaces close to the two pairs of support rods. Preferably, the wear-resistant guide shoes 51 are made of wear-resistant material.

[0030] Specifically, through the guiding effect of the two sets of wear-resistant guide shoes 51, the product can be stably raised and lowered along the height direction of the column bracket 1, ensuring that the free fall test is carried out safely and stably, thereby improving the practicality and reliability of the testing machine.

[0031] refer to Figure 1 、 Figure 4 and Figure 5The guide assembly 5 also includes a fixing frame 52, and the number of each group of wear-resistant guide shoes 51 is two. The top of the fixing frame 52 is fixedly connected to the bottom surface of the two upper wear-resistant guide shoes 51, and the bottom of the fixing frame 52 is fixedly connected to the top surface of the two lower wear-resistant guide shoes 51. The lifting plate 4 is fixedly connected to the top of the fixing frame 52.

[0032] Specifically, by fixing the fixing frame 52 to the two sets of wear-resistant guide shoes 51, the structural stability and firmness of the guide assembly 5 can be improved, so that the guide assembly 5 can stably support the lifting plate 4 and the release assembly 6 and reliably guide the lifting plate 4 and the release assembly 6, thereby ensuring that the product falling height adjustment work is carried out stably and reliably, thereby improving the reliability and stability of the testing machine.

[0033] The wear-resistant guide shoe 51 is a rectangular plate with guide grooves at the two corners of the rectangular plate near the support rod. The guide grooves fit the two side surfaces of the adjacent support rods, ensuring that the wear-resistant guide shoe 51 can stably guide the lifting and lowering action of the lifting plate 4, thereby improving the reliability of the testing machine.

[0034] refer to Figure 4 and Figure 5 The release assembly 6 includes a placement plate 61 fixedly connected to the front of the lifting plate 4. The release assembly 6 also includes a transverse push rod motor 62 fixedly connected to the top of the lifting plate 4. The transverse push rod motor 62 is connected to a travel limit device. The output end of the transverse push rod motor 62 is fixedly connected to a push plate 63. The push plate 63 is located above the lifting plate 4. The push plate 63 is pushed forward by the transverse push rod motor 62, and the push plate 63 will push the product to fall from the placement plate 61. In this way, you only need to place the product at a suitable position on the top of the placement plate 61 to ensure that the product's free fall movement is smooth. This can simplify the test operation of the testing machine and effectively improve the test efficiency of the testing machine.

[0035] refer to Figure 1 and Figure 5 The release assembly 6 further includes two guide bars 64 symmetrically fixedly connected to the placement plate 61, and the length direction of the guide bars 64 is parallel to the length direction of the placement plate 61. The release assembly 6 further includes a positioning guide sleeve 65 fixedly connected to the top of the placement plate 61, and the push rod of the horizontal push rod motor 62 is movably sleeved in the positioning guide sleeve 65;

[0036] Placing the product on the two guide bars 64 can reduce the friction between the product and the top of the placement plate 61, ensuring that the push plate 63 can smoothly push the product off the placement plate 61, so that the testing work can be carried out smoothly.

[0037] refer to Figure 1 and Figure 4The top of the lifting push rod motor 3 is hinged to the connecting frame 2 through a pin 31, and the top of the lifting plate 4 is fixedly connected to a lifting ring 32, and the output end of the lifting push rod motor 3 is hinged to the lifting ring 32.

[0038] Specifically, the lifting push rod motor 3 can rotate at a certain angle with the connecting frame 2 and the lifting plate 4. In this way, when the connecting frame 2 and the column bracket 1 are slightly swung and deformed during testing, the lifting push rod motor 3 can still stably and reliably drive the lifting plate 4 to rise and fall, and at the same time avoid the lifting push rod motor 3 from being subjected to torsional force due to the deformation of the connecting frame 2 and the column bracket 1, thereby ensuring the safety of the lifting push rod motor 3 and further improving the reliability of the testing machine.

[0039] Working principle: During the test, the product to be tested is stably placed on the top surface of the two guide bars 64, and then the lifting height of the lifting push rod motor 3 is set by the encoder. Then the lifting push rod motor 3 cooperates with the guide component 5 to drive the lifting plate 4 to move upward along the column bracket 1 to the set height, and then the horizontal push rod motor 62 is started to push the push plate 63 forward until the product to be tested is pushed down from the placement plate 61, and then the falling height and impact resistance that the product can withstand are evaluated based on the damage of the product after falling freely to the ground.

[0040] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A height-adjustable free-fall testing machine, comprising a column support (1), characterized in that: The column bracket (1) comprises four supporting rods distributed in a rectangular shape, the top of the column bracket (1) is fixedly connected to a connecting frame (2), the connecting frame (2) is connected to a lifting push rod motor (3), the lifting push rod motor (3) is connected to an encoder and a stroke limit device, the output end of the lifting push rod motor (3) is connected to a lifting plate (4), and further comprises a guide assembly (5) provided on the column bracket (1), the lifting plate (4) is connected to the guide assembly (5), and the lifting plate (4) is connected to a release assembly (6); The guide assembly (5) is used to guide the lifting plate (4) to move up and down along the four support rods of the column bracket (1); The release assembly (6) is used to release the product from a preset height to allow it to fall freely.

2. The height-adjustable free-fall testing machine according to claim 1, characterized in that: The guide assembly (5) comprises two groups of wear-resistant guide shoes (51) symmetrically distributed on the left and right sides, the two groups of wear-resistant guide shoes (51) being connected to the lifting plate (4), and the two groups of wear-resistant guide shoes (51) being respectively fitted with the adjacent side surfaces of the two pairs of support rods.

3. The height-adjustable free-fall testing machine according to claim 2, characterized in that: The guide assembly (5) further includes a fixing frame (52), the number of each group of the wear-resistant guide shoes (51) is two, the top of the fixing frame (52) is fixedly connected to the bottom surfaces of the two upper wear-resistant guide shoes (51), the bottom of the fixing frame (52) is fixedly connected to the top surfaces of the two lower wear-resistant guide shoes (51), and the lifting plate (4) is fixedly connected to the top of the fixing frame (52).

4. The height-adjustable free-fall testing machine according to claim 3, characterized in that: The release assembly (6) includes a placement plate (61) fixedly connected to the front of the lifting plate (4), and the release assembly (6) also includes a transverse push rod motor (62) fixedly connected to the top of the lifting plate (4). The output end of the transverse push rod motor (62) is fixedly connected to a push plate (63), and the push plate (63) is located above the lifting plate (4).

5. The height-adjustable free-fall testing machine according to claim 4, characterized in that: The release assembly (6) further includes two guide bars (64) fixedly connected to the placement plate (61) in a left-right symmetrical manner, wherein the length direction of the guide bars (64) is parallel to the length direction of the placement plate (61). The release assembly (6) further includes a positioning guide sleeve (65) fixedly connected to the top of the placement plate (61), and the push rod of the transverse push rod motor (62) is movably sleeved in the positioning guide sleeve (65).

6. A height-adjustable free-fall testing machine according to any one of claims 1 or 5, characterized in that: The top of the lifting push rod motor (3) is hinged to the connecting frame (2) via a latch (31), a lifting ring (32) is fixedly connected to the top of the lifting plate (4), and the output end of the lifting push rod motor (3) is hinged to the lifting ring (32).

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