Vertical gravity falling body testing device

Abstract

The utility model discloses a vertical gravity falling body testing device, which relates to the technical field of falling body testing equipment and comprises a main frame, a plurality of fixed protection plates are fixedly mounted on the outer side of the main frame, a movable protection plate is movably mounted at the lower position of one side of the main frame, and two guide rails are fixedly mounted on two sides in the main frame. A winch is fixedly installed at the top of the main frame and electrically connected with an external control computer through a cable, a lifting mechanism is arranged among the four guide rails and comprises a bottom plate, two stand columns are fixedly installed at the top of the bottom plate, and two cross beams are fixedly connected between the two stand columns. The two mounting columns and the air cylinder are arranged on the bottom plate and matched with the clamping mechanism, and the clamping mechanism is composed of the clamping mechanism body, the mounting base, the mounting plate, the mounting frame, the connecting block and the like, so that test articles with different sizes and different outer contour structures can be quickly clamped and fixed, meanwhile, the test articles can be quickly released, and the test efficiency is improved. And the accuracy of test data is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of falling body testing equipment, in particular to a vertical gravity falling body testing device. Background Art

[0002] Gravity drop test equipment is a precision instrument used to measure gravity-related parameters. The equipment usually includes a stable release mechanism to ensure that the test object obtains a consistent initial speed and direction at the initial moment. At the same time, it is equipped with a high-precision measurement system to capture key parameters such as displacement, speed and time during the object's fall. Through the measurement and analysis of these parameters, key data such as gravitational acceleration and absolute gravity value can be calculated;

[0003] For example, the Chinese utility model patent disclosed by announcement number CN209280491U: a miniaturized heavy object free fall test device, which is simple and flexible to use. The height of the free fall of the object can be set according to the needs, and the impact test can be carried out on protective equipment such as safety helmets and safety shoes. The first organic protective glass and the second organic protective glass can not only observe the process of the free fall experiment, but also protect people's safety, thereby improving the convenience of using the equipment. In addition, when the test object is lifted and released, the application uses an electromagnetic clutch to control the baffle to flip downward, thereby realizing the falling of the test object. However, since the baffle flips downward, the action of flipping the baffle itself may not be completed instantly, which will lead to uncertainty in the moment of object release. This uncertainty will directly affect the measurement of the falling time, because the slight difference in the starting time will be magnified during the high-speed falling process, resulting in errors in the parameters such as the final calculated gravitational acceleration. At the same time, the release structure cannot achieve limit fixation of test objects of different sizes. Utility Model Content

[0004] The purpose of the utility model is to provide a vertical gravity drop test device, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A vertical gravity fall test device comprises a main frame, a plurality of fixed protective plates are fixedly installed on the outside of the main frame, a movable protective plate is movably installed at the lower position of one side of the main frame, two guide rails are fixedly installed on both sides of the main frame, a winch is fixedly installed on the top of the main frame, the winch is electrically connected to an external control computer through a cable, a lifting mechanism is arranged between the four guide rails, the lifting mechanism comprises a base plate, two columns are fixedly installed on the top of the base plate, two cross beams are fixedly connected between the two columns, two sliders are also fixedly installed on both sides of the base plate, two mounting columns are fixedly installed on the top of the base plate, a clamping mechanism is arranged on one side of the mounting column, the clamping mechanism comprises a mounting seat and a clamping frame, the clamping frame also comprises a mounting plate and a mounting frame, the mounting plate and the mounting frame are fixedly connected to each other and fixedly installed on one side of the mounting seat, and the base plate is movably installed between the four guide rails through four sliders.

[0007] As a further preferred embodiment of the present invention, the winch is a double winding wheel structure, and the tops of the two cross beams are respectively connected to the winding wheels on one side of the winch through connecting ropes.

[0008] As a further preferred solution of the utility model, cylinders are fixedly mounted on opposite sides of the two mounting columns, and the cylinders are connected to an external air pump through a pipeline.

[0009] As a further preferred embodiment of the present invention, an embedding groove is provided at the center position of the mounting seat, and a mounting hole is provided at the center position of the inner side of the embedding groove. The mounting seat is installed on the output end of the corresponding mounting column through the mounting hole and fixed by a nut. With the help of the setting of the mounting seat, the entire clamping frame can be installed on the output end of the corresponding cylinder, and the setting of the embedding groove can enable the nut to be embedded in the embedding groove without affecting the installation of the mounting plate.

[0010] As a further preferred embodiment of the present invention, a plurality of first fixing seats are fixedly installed on the inner side of the installation frame, a connecting block is provided at the center position of the installation frame, a plurality of second fixing seats are fixedly installed on the outer side of the connecting block, and the first fixing seats are connected to the corresponding second fixing seats via tension springs.

[0011] As a further preferred embodiment of the present invention, the mounting frame and the mounting plate are fixedly connected by four connecting rods, and screws are inserted between the mounting plate, the mounting frame and the connecting rods and fixedly mounted on one side of the mounting seat. Through the setting of the connecting block, the tension spring and the mounting frame, objects of different sizes can be clamped and fixed. At the same time, stable clamping of objects with different outer contour structures can also be achieved.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model discloses a vertical gravity drop test device, wherein two mounting columns and a cylinder are arranged on a base plate, and cooperate with a clamping mechanism, and the clamping mechanism is composed of a clamping mechanism, a mounting seat, a mounting plate, a mounting frame, a connecting block and other components, and can quickly clamp and fix test items of different sizes and different outer contour structures, and at the same time realize rapid release of the test items, thereby ensuring the accuracy of the test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the lifting mechanism structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the clamping mechanism of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the clamping frame of the utility model;

[0018] Figure 5 It is a cross-sectional view of the mounting seat of the utility model.

[0019] In the figure: 1. main frame; 2. fixed protective plate; 3. movable protective plate; 4. guide rail; 5. winch; 6. lifting mechanism; 7. bottom plate; 8. column; 9. crossbeam; 10. slider; 11. clamping mechanism; 12. mounting seat; 13. clamping frame; 14. mounting plate; 15. mounting frame; 16. connecting block; 17. mounting column; 18. cylinder; 19. embedding groove; 20. mounting hole; 21. first fixed seat; 22. second fixed seat; 23. tension spring; 24. connecting rod. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figure 1-Figure 5As shown, a vertical gravity fall test device provided by the utility model comprises a main frame 1, a plurality of fixed protective plates 2 are fixedly installed on the outer side of the main frame 1, a movable protective plate 3 is movably installed at the lower position of one side of the main frame 1, two guide rails 4 are fixedly installed on both sides of the main frame 1, a winch 5 is fixedly installed on the top of the main frame 1, the winch 5 is electrically connected to an external control computer through a cable, a lifting mechanism 6 is arranged between the four guide rails 4, the lifting mechanism 6 comprises a bottom plate 7, two columns 8 are fixedly installed on the top of the bottom plate 7, two cross beams 9 are fixedly connected between the two columns 8, two sliders 10 are also fixedly installed on both sides of the bottom plate 7, two mounting columns 17 are fixedly installed on the top of the bottom plate 7, a clamping mechanism 11 is arranged on one side of the mounting column 17, the clamping mechanism 11 comprises a mounting seat 12 and a clamping frame 13, the clamping frame 13 also comprises a mounting plate 14 and a mounting frame 15, the mounting plate 14 and the mounting frame 15 are fixedly connected to each other and fixedly installed on one side of the mounting seat 12, and the bottom plate 7 is movably installed between the four guide rails 4 through four sliders 10.

[0022] like Figure 1-Figure 2 As shown, the winch 5 is a double winding wheel structure, and the tops of the two cross beams 9 are connected to the winding wheels on one side of the winch 5 through connecting ropes, and cylinders 18 are fixedly installed on the opposite sides of the two mounting columns 17, and the cylinders 18 are connected to the external air pump through pipelines;

[0023] like Figure 2-Figure 5 As shown, an embedding groove 19 is provided at the center position of the mounting seat 12, and a mounting hole 20 is provided at the center position of the inner side of the embedding groove 19. The mounting seat 12 is inserted and installed on the output end of the corresponding mounting column 17 through the mounting hole 20 and fixed by a nut. With the arrangement of the mounting seat 12, the entire clamping frame 13 can be installed on the output end of the corresponding cylinder 18, and the provision of the embedding groove 19 enables the nut to be embedded in the embedding groove 19 without affecting the installation of the mounting plate 14. A plurality of first fixing seats 21 are fixedly installed on the inner side of the mounting frame 15, and a connecting block 16 is provided at the center position of the mounting frame 15. A plurality of second fixing seats 22 are fixedly installed on the outside of the connecting block 16, the first fixing seat 21 is connected to the corresponding second fixing seat 22 by a tension spring 23, the mounting frame 15 and the mounting plate 14 are fixedly connected by four connecting rods 24, and screws are inserted and installed between the mounting plate 14, the mounting frame 15, and the connecting rods 24 and fixedly installed on one side of the mounting seat 12. Through the arrangement of the connecting block 16, the tension spring 23, and the mounting frame 15, objects of different sizes can be clamped and fixed, and at the same time, stable clamping of objects with different outer contour structures can be achieved.

[0024] It should be noted that the utility model is a vertical gravity drop test device. When performing a drop test on an object, the test object can be placed between two mounting frames 15. Then, two cylinders 18 are started by controlling a computer or a handheld terminal. Thus, the two cylinders 18 respectively and synchronously push the corresponding mounting seats 12 relative to each other, thereby causing the two mounting seats 12 to respectively move the mounting plate 14 and the mounting frame 15 on one side relative to each other. Thus, the test object can be clamped and fixed by the two mounting frames 15. If the outer contour of the test object has a special-shaped structure or a spherical structure, the connecting block 16 can be directly used to connect with the mounting frame 15. The multiple tension springs 23 connected to the frame 15 are deformed in accordance with the outer contour of the test object, thereby ensuring that the spherical or irregular test objects can be clamped. Then, the winch 5 is started so that the winding wheels on both sides of the winch 5 will reel in the connecting ropes connected to the corresponding crossbeams 9, so that the base plate 7 moves up between the four guide rails 4 through the sliders 10 on both sides. When the base plate 7 drives the test object to move to the specified height, the output ends of the two cylinders 18 can be synchronously retracted, so that the installation frame 15 or the connecting block 16, the tension spring 23 and the test object are quickly separated, so that the test object can fall through the through groove in the base plate 7.

[0025] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A vertical gravity drop test device, characterized in that: The invention comprises a main frame (1), a plurality of fixed protective plates (2) are fixedly installed on the outside of the main frame (1), a movable protective plate (3) is movably installed at a lower position on one side of the main frame (1), two guide rails (4) are fixedly installed on both sides of the main frame (1), a winch (5) is fixedly installed on the top of the main frame (1), the winch (5) is electrically connected to an external control computer via a cable, a lifting mechanism (6) is arranged between the four guide rails (4), the lifting mechanism (6) comprises a bottom plate (7), two columns (8) are fixedly installed on the top of the bottom plate (7), and a fixed connection is formed between the two columns (8). Two cross beams (9) are fixedly connected, two sliders (10) are fixedly installed on both sides of the bottom plate (7), two mounting columns (17) are fixedly installed on the top of the bottom plate (7), a clamping mechanism (11) is arranged on one side of the mounting column (17), the clamping mechanism (11) comprises a mounting seat (12) and a clamping frame (13), the clamping frame (13) further comprises a mounting plate (14) and a mounting frame (15), the mounting plate (14) and the mounting frame (15) are fixedly connected to each other and fixedly installed on one side of the mounting seat (12), and the bottom plate (7) is movably installed between four guide rails (4) through four sliders (10).

2. A vertical gravity drop test device according to claim 1, characterized in that: The hoist (5) is a double winding wheel structure, and the tops of the two cross beams (9) are respectively connected to the winding wheels on one side of the hoist (5) via connecting ropes.

3. A vertical gravity drop test device according to claim 1, characterized in that: Cylinders (18) are respectively fixedly mounted on opposite sides of the two mounting columns (17), and the cylinders (18) are connected to an external air pump via a pipeline.

4. A vertical gravity drop test device according to claim 3, characterized in that: An embedding groove (19) is provided at the center position inside the mounting seat (12), a mounting hole (20) is provided at the center position inside the embedding groove (19), and the mounting seat (12) is installed on the output end of the corresponding mounting column (17) through the mounting hole (20) and fixed by a nut.

5. A vertical gravity drop test device according to claim 1, characterized in that: A plurality of first fixing seats (21) are fixedly mounted on the inner side of the installation frame (15); a connecting block (16) is provided at a central position inside the installation frame (15); a plurality of second fixing seats (22) are fixedly mounted on the outer side of the connecting block (16); and the first fixing seats (21) are connected to corresponding second fixing seats (22) via tension springs (23).

6. A vertical gravity drop test device according to claim 5, characterized in that: The mounting frame (15) and the mounting plate (14) are fixedly connected via four connecting rods (24), and screws are inserted and installed between the mounting plate (14), the mounting frame (15) and the connecting rods (24) and fixedly mounted on one side of the mounting seat (12).

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