A quick deflation device for a pneumatic impact table

Abstract

The present invention provides a rapid deflation device for a pneumatic impact table, the rapid deflation device comprising an airbag, an upper plate of the airbag connected to the upper side of the airbag, a lower plate of the airbag connected to the lower side of the airbag, and an airbag sealing plate arranged on the upper side of the upper plate of the airbag, the airbag sealing plate being arranged on the lower side of the lower cover of the impact cylinder, and being used to seal the lower end opening of the lower chamber of the impact cylinder, and the airbag sealing plate being able to move up and down with the inflation and deflation of the airbag. The rapid deflation device for a pneumatic impact table of the present invention can prevent the lower chamber of the impact cylinder from being blocked when the tabletop impacts at high speed, thereby realizing the function of rapid deflation, making the tabletop fall more smoothly and having greater impact energy.

Description

Technical Field

[0001] The invention relates to an impact test of a mechanical environment test technology, and in particular to a rapid air release device of a pneumatic impact table. Background Art

[0002] Pneumatic shock test equipment is mainly used for mechanical environmental testing of products. It simulates the impact environment that the product may suffer during use, loading and unloading, and transportation, and assesses the functional reliability and structural integrity of the product under this impact environment.

[0003] Generally, the gas of pneumatic impact test equipment is fed in and out through an intake valve and an exhaust valve during the impact process. However, the high-acceleration pneumatic vertical impact table is driven by full air pressure. During the impact process, the impact energy is very large and the speed is fast. The exhaust through the ordinary quick exhaust valve port can no longer meet the requirements. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a rapid air-deflation device for a pneumatic impact table.

[0005] In order to solve the above technical problems, the present invention provides a rapid deflation device for a pneumatic impact platform, wherein the rapid deflation device includes an airbag, an airbag upper plate connected to the upper side of the airbag, an airbag lower plate connected to the lower side of the airbag, and an airbag sealing plate arranged on the upper side of the airbag upper plate. The airbag sealing plate is arranged on the lower side of the lower cover of the impact cylinder and is used to seal the lower end opening of the lower chamber of the impact cylinder. The airbag sealing plate can move up and down with the inflation and deflation of the airbag.

[0006] Preferably, a pilot quick exhaust valve for deflation of the airbag is also installed on the lower plate of the airbag, and the quick exhaust valve is used to exhaust the airbag when the impact platform falls.

[0007] Preferably, a plurality of springs are arranged between the lower cover of the impact cylinder and the upper plate of the airbag, the upper end of the spring acts on the lower cover of the impact cylinder, and the lower end of the spring acts on the upper plate of the airbag. When the airbag is in an inflated state, the airbag sealing plate seals the lower cavity of the impact cylinder, and the spring is in a compressed state.

[0008] Preferably, the rapid deflation device also includes a plurality of airbag tie rods, the upper ends of the airbag tie rods are connected to the lower cover of the impact cylinder, the lower ends of the airbag tie rods are fixedly connected to the lower plate of the airbag, the airbag tie rods pass through the upper plate of the airbag, and the upper plate of the airbag can slide up and down along the airbag tie rods.

[0009] Preferably, a plurality of the airbag tie rods are arranged along the circumference of the airbag, and the spring is sleeved on the airbag tie rods.

[0010] Preferably, the pilot quick exhaust valve is controlled by a solenoid valve, and the solenoid valve is used to control the pilot quick exhaust valve to deflate the airbag when the impact platform falls.

[0011] Preferably, the upper portion of the airbag is connected to the upper plate of the airbag by screws, the upper plate of the airbag is connected to the sealing plate of the airbag by screws, and the lower portion of the airbag is connected to the lower plate of the airbag by screws.

[0012] The rapid air release device of the pneumatic impact table of the present invention can prevent air blockage in the lower cavity of the impact cylinder when the table top impacts at high speed, thereby realizing the function of rapid air release, making the table top fall more smoothly and having greater impact energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the rapid deflation device of the present application.

[0014] Among them: 1. impact cylinder lower cover; 2. spring; 3. airbag sealing plate; 4. pilot quick exhaust valve; 5. airbag lower plate; 6. airbag; 7. airbag upper plate; 8. airbag pull rod; 9. lower chamber inflation port; 10. impact cylinder lower chamber. DETAILED DESCRIPTION

[0015] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0016] like Figure 1 As shown, the present invention provides a quick deflation device for a pneumatic impact platform, the quick deflation device includes an airbag 6, an airbag upper plate 7 connected to the upper side of the airbag 6, an airbag lower plate 5 connected to the lower side of the airbag 6, and an airbag sealing plate 3 arranged on the upper side of the airbag upper plate 7. The airbag sealing plate 3 is arranged on the lower side of the impact cylinder lower cover 1 and is used to seal the lower end opening of the impact cylinder lower chamber 10. The airbag sealing plate 3 can move up and down with the inflation and deflation of the airbag 6.

[0017] A pilot quick exhaust valve 4 for deflation of the airbag 6 is also installed on the airbag lower plate 5, and the quick exhaust valve is used to exhaust the airbag 6 when the impact platform falls. The pilot quick exhaust valve 4 is controlled by a solenoid valve, and the solenoid valve is used to control the pilot quick exhaust valve 4 to deflate the airbag 6 when the impact platform falls.

[0018] A plurality of springs 2 are also provided between the impact cylinder lower cover 1 and the airbag upper plate 7. The upper end of the spring 2 acts on the impact cylinder lower cover 1, and the lower end of the spring 2 acts on the airbag upper plate 7. When the airbag 6 is in an inflated state, the airbag sealing plate 3 seals the impact cylinder lower chamber 10, and the spring 2 is in a compressed state. The quick deflation device also includes a plurality of airbag tie rods 8. The upper end of the airbag tie rod 8 is connected to the impact cylinder lower cover 1, and the lower end of the airbag tie rod 8 is fixedly connected to the airbag lower plate 5. The airbag tie rod 8 passes through the airbag upper plate 7, and the airbag upper plate 7 can slide up and down along the airbag tie rod 8. The plurality of airbag tie rods 8 are arranged circumferentially along the airbag 6, and the spring 2 is sleeved on the airbag tie rod 8. The stability of the overall structure of the quick deflation device is ensured.

[0019] The process of implementing rapid deflation: when the impact platform falls, the pilot quick exhaust valve 4 exhausts the airbag 6, and the air pressure in the airbag 6 decreases. At this time, the pressure in the lower chamber 10 of the impact cylinder is greater than the pressure of the airbag 6, so that the airbag sealing plate 3 is separated from the lower cover 1 of the impact cylinder, and the lower chamber 10 of the impact cylinder is exhausted.

[0020] If the spring 2 is not provided, when the airbag 6 and the impact cylinder lower chamber 10 are exhausted at the same time, the pressure inside the two will form a balance at a certain moment of exhaust, which will cause the separation opening between the airbag sealing plate 3 and the impact cylinder lower cover 1 to be unable to be fully opened, and the gas in the impact cylinder lower chamber 10 cannot be quickly released. Now due to the effect of the spring 2, when the airbag 6 is originally inflated, the spring 2 will be subjected to an upward pre-pressure. When the airbag 6 is exhausted, the spring 2 releases the pre-pressure, and a downward force is applied to the airbag upper plate 7 through the spring 2. The separation opening between the airbag sealing plate 3 and the impact cylinder lower cover 1 is enlarged, which can ensure that the gas in the impact cylinder lower chamber 10 is quickly discharged.

[0021] The rapid deflation device of the pneumatic impact table of the present invention can prevent air blockage in the lower chamber 10 of the impact cylinder when the table top impacts at high speed, thereby realizing the function of rapid deflation, making the table top fall more smoothly and having greater impact energy.

[0022] The above-described embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or changes made by those skilled in the art based on the present invention are within the protection scope of the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. A rapid deflation device for a pneumatic impact table, characterized in that: The rapid deflation device comprises an airbag, an airbag upper plate connected to the upper side of the airbag, an airbag lower plate connected to the lower side of the airbag, and an airbag sealing plate arranged on the upper side of the airbag upper plate. The airbag sealing plate is arranged on the lower side of the impact cylinder lower cover and is used to seal the lower end opening of the impact cylinder lower chamber. The airbag sealing plate can move up and down with the inflation and deflation of the airbag. A plurality of springs are further arranged between the impact cylinder lower cover and the airbag upper plate, the upper end of the spring acts on the impact cylinder lower cover, and the lower end of the spring acts on the airbag upper plate. When the airbag is in an inflated state, the airbag sealing plate seals the impact cylinder lower cavity, and the spring is in a compressed state. When the airbag is exhausted, the spring releases the pre-pressure, and a downward force is applied to the upper plate of the airbag through the spring, so that the opening separating the airbag sealing plate from the lower cover of the impact cylinder is enlarged, and the gas in the lower chamber of the impact cylinder is discharged; A pilot quick exhaust valve for deflation of the airbag is also installed on the lower plate of the airbag, and the quick exhaust valve is used to exhaust the airbag when the impact platform falls; The method of rapid deflation includes: when the impact platform falls, the pilot quick exhaust valve exhausts the airbag, the air pressure in the airbag decreases, and the pressure in the lower chamber of the impact cylinder is greater than the airbag pressure, so that the airbag sealing plate is separated from the lower cover of the impact cylinder, and the lower chamber of the impact cylinder is exhausted.

2. The rapid deflation device according to claim 1, characterized in that: The rapid deflation device also includes multiple airbag tie rods, the upper ends of the airbag tie rods are connected to the lower cover of the impact cylinder, the lower ends of the airbag tie rods are fixedly connected to the lower plate of the airbag, the airbag tie rods pass through the upper plate of the airbag, and the upper plate of the airbag can slide up and down along the airbag tie rods.

3. The rapid deflation device according to claim 2, characterized in that: A plurality of the airbag tie rods are arranged along the circumference of the airbag, and the spring is sleeved on the airbag tie rods.

4. The rapid deflation device according to claim 1, characterized in that: The pilot quick exhaust valve is controlled by a solenoid valve, and the solenoid valve is used to control the pilot quick exhaust valve to deflate the airbag when the impact platform falls.

5. The rapid deflation device according to claim 1, characterized in that: The upper part of the airbag is connected to the upper plate of the airbag through screws, the upper plate of the airbag is connected to the sealing plate of the airbag through screws, and the lower part of the airbag is connected to the lower plate of the airbag through screws.

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