A mechanical ejection device for a small fire escape bottle

Abstract

The present invention discloses a mechanical ejection device for a small fire escape bottle, belonging to the technical field of fire fighting equipment. The device comprises an ejection tube, a cam, a driving motor, a motor support frame, a base, a launching frame, a guide rod, a spring, a push plate, a roller, an L-shaped storage trough and an electric ejector. The working principle is as follows: the driving motor drives the cam to rotate, and the roller is squeezed through the eccentric profile of the cam, thereby driving the push plate to move downward along the ejection tube and compressing the spring; when the roller contacts the limit position of the cam profile, the cam continues to rotate, and the cam suddenly loses contact with the roller. At this time, the spring quickly resets, and the escape bottle is instantly ejected by elastic force; then the electric ejector descends, and the escape bottle is automatically loaded by its own gravity, and then the electric ejector is lifted up to complete an action cycle. The escape bottle is automatically loaded by utilizing the periodic change of the profile when the cam rotates and the telescopic characteristics of the spring, and the telescopic electric ejector is coordinated to realize the function of continuously ejecting the escape bottle.

Description

Technical field:

[0001] The invention belongs to the technical field of firefighting equipment, and in particular relates to a mechanical ejection device for a small firefighting escape bottle. The device can continuously eject the firefighting escape bottle and can be applied to a firefighting robot. Background technology:

[0002] As a new type of fire-fighting tool, a small fire escape bottle is easy to use, has a fast fire-fighting speed and good effect. However, during use, since the escape bottle itself has a certain weight, firefighters will consume a lot of physical strength in the process of throwing the escape bottle, which increases the difficulty of firefighting operations. Firefighters still need to work on site, which still poses a certain threat to the personal safety of firefighters. With the emergence of firefighting robots, in order to further ensure the fire-fighting effect, in addition to solving the automatic water spraying function, it is also urgent to equip a mechanical device that can automatically and continuously launch fire escape bottles. At present, there are almost no firefighting robots designed for ejection escape bottles, and there is a great development prospect. Most of the existing ejection devices need to be manually loaded to be continuously fired, and some adopt the strategy of multiple launch tubes to realize the continuous firing function, resulting in the overall device being too large and not suitable for firefighting robots. The present invention provides a mechanical ejection device for a small fire escape bottle, which utilizes the periodic change of the profile when the cam rotates and the telescopic characteristics of the spring, and cooperates with the telescopic electric ejector to automatically load the escape bottle, so as to realize the function of continuously ejecting a small fire escape bottle. Summary of the invention:

[0003] The object of the present invention is to provide a mechanical ejection device for a small fire escape bottle, which includes an ejection tube 1, a cam 2, a drive motor 3, a motor support frame 4, a base 5, a launching frame 6, a guide rod 7, a spring 8, a push plate 9, a roller 10, an L-shaped storage trough 11 and an electric ejector 12.

[0004] The ejection tube 1 is a hollow structure, and the upper end of the ejection tube 1 is an open semi-cylindrical chamber, so that the escape bottle 12 can smoothly roll into the chamber at the upper end of the ejection tube 1. There is a hole in the middle of the tail of the semi-cylindrical chamber of the ejection tube 1 for the guide rod 7 to pass through. A slide groove is opened on the right side of the middle of the chamber of the ejection tube 1. The ejection tube 1 is installed on the launch frame 6, and the angle between the axis of the ejection tube 1 and the horizontal plane of the mounting base 5 is 45°;

[0005] The cam 2 has a comma shape, and there is a section along the radius at the point where the curvature radius of the cam 2 is the largest. The eccentricity of the cam 2 matches the compression amount of the spring 8. The cam 2 is connected to the output shaft of the drive motor 3, and the drive motor 3 is fixed on the motor support frame 4, and the motor support frame 4 is installed on the base 5.

[0006] The launching frame 6 is composed of two circular support columns with a high front and a low rear, and the launching frame 6 is fixed on the base 5. The spring 8, the guide rod 7 and the push plate 9 are arranged in the semi-cylindrical chamber of the ejection tube 1; the upper end of the guide rod 7 is vertically fixedly connected to the push plate 9, and the guide rod 7 passes through the spring 8 and the middle hole at the tail of the ejection tube 1; the lower end of the spring 8 is fixedly connected to the bottom of the ejection tube 1; a connecting shaft is provided on the right side of the push plate 9, and the connecting shaft is located in the slide groove on the right side of the ejection tube 1; the roller 10 is installed on the right end of the connecting shaft, and the cam 2 rotates to push the roller 10 to drive the connecting shaft to slide downward along the slide groove on the right side of the ejection tube 1, thereby driving the push plate 9 to move downward along the chamber of the ejection tube 1 and compress the spring 8.

[0007] The bottom plane of the L-shaped storage tank 11 is connected to the semi-circular bore end face on the upper side of the ejection tube 1 and the angle between the two is 135°. The L-shaped storage tank 11 is arranged at the upper end of the support column of the launch frame 6. A number of escape bottles 13 are stored in the L-shaped storage tank 11 in sequence. Two synchronously retractable electric push rods 12 are provided at the bottom end of the L-shaped storage tank 11. When the electric push rod 12 retracts, the escape bottle 13 can roll into the semi-cylindrical bore of the ejection tube 1 by itself due to its own gravity. The entire mechanical ejection device is installed on the body of the fire fighting robot through the base 5. Description of the drawings:

[0008] Figure 1 It is a structural schematic diagram of a mechanical ejection device of a small fire escape bottle of the present invention;

[0009] FIG. 2( a ) is a schematic diagram of the initial stage of the ejection process of the mechanical ejection device of the present invention;

[0010] FIG2( b ) is a schematic diagram of the spring energy storage stage of the ejection process of the mechanical ejection device of the present invention;

[0011] FIG2( c ) is a schematic diagram of the completion of spring energy storage during the ejection process of the mechanical ejection device of the present invention;

[0012] FIG. 2( d ) is a schematic diagram of the ejection of the escape bottle during the ejection process of the mechanical ejection device of the present invention.

[0013] In the figure: 1: ejection tube; 2: cam; 3: driving motor; 4: motor support frame; 5: base; 6: launching frame; 7: guide rod; 8: spring; 9: push plate; 10: roller; 11: L-shaped storage trough; 12: electric push rod; 13: escape bottle. Specific implementation method:

[0014] The present invention provides a mechanical ejection device for a small fire escape bottle, which utilizes the periodic change of the profile when the cam rotates and the expansion and contraction characteristics of the spring, and cooperates with the expansion and contraction of the electric ejector rod to automatically load the escape bottle, thereby realizing the function of continuously ejecting the escape bottle.

[0015] Its working principle is: when the driving motor 3 is started and drives the cam 2 to rotate, the cam 2 will contact the roller 10, as shown in Figure 2(a); the cam 2 squeezes the roller 10 through its eccentric profile, thereby driving the connecting shaft of the push plate 9 to move along the slide groove on the right side of the ejection tube 1, thereby driving the push plate 9 to move down along the bore of the ejection tube 1 and compressing the spring 8; the guide rod 7 will constrain the freedom of the push plate 9 to prevent the push plate 9 from shifting in posture, and the middle hole at the tail of the ejection tube 1 is used to limit the freedom of the guide rod 7 so that the guide rod 7 can only slide up and down, and the push plate 9 moves downward along the bore of the ejection tube 1, and the escape bottle 13 will also move downward along the bore of the ejection tube 1 along the push plate 9 by its own gravity, as shown in Figure 2( b); the cam 2 continues to move downward along the chamber of the ejection tube 1 with the push plate 9 and compresses the spring 8. When the roller 10 moves to the extreme position of the cam 2 profile, as shown in FIG2(c), the spring 8 is at the maximum compression stroke; as the cam 2 continues to move, the cam 2 will suddenly lose contact with the roller 10, and the spring 8 will quickly reset, relying on the elastic force to instantly eject the escape bottle 13, as shown in FIG2(d); then the electric push rod 12 first descends, and one of the escape bottles 13 in the L-shaped storage tank 11 is automatically loaded into the upper chamber of the ejection tube by its own gravity, and the electric push rod 12 is lifted up again to block the remaining escape bottles 13 in the L-shaped storage tank 11, completing an action cycle. By utilizing the periodic change of the profile when the cam 2 rotates and the telescopic characteristics of the spring 8, and cooperating with the telescopic movement of the electric push rod 12 to automatically load the escape bottle 13, the function of continuously ejecting the escape bottle 13 can be realized.

Claims

1. A mechanical ejection device for a small fire escape bottle, characterized in that The mechanical ejection device comprises an ejection tube (1), a cam (2), a driving motor (3), a motor support frame (4), a base (5), a launching frame (6), a guide rod (7), a spring (8), a push plate (9), a roller (10), an L-shaped material storage trough (11) and an electric ejector (12); the ejection tube (1) is a hollow structure, the upper end of the ejection tube (1) is an open semi-cylindrical bore, a through hole is provided in the middle of the tail of the semi-cylindrical bore of the ejection tube (1), a sliding groove is provided on the right side of the middle of the semi-cylindrical bore of the ejection tube (1), the ejection tube (1) is installed on the launching frame (6), and the axis of the ejection tube (1) is connected to the mounting base. (5) the angle between the horizontal planes is 45°; the cam (2) is comma-shaped, a section along the radius is provided at the maximum curvature radius of the cam (2), and the eccentricity of the cam (2) matches the compression amount of the spring (8); the cam (2) is connected to the output shaft of the drive motor (3), the drive motor (3) is fixed on the motor support frame (4), and the motor support frame (4) is installed on the base (5); the launching frame (6) is composed of two circular supporting columns with a higher front and a lower rear, and the launching frame (6) is fixed on the base (5); the spring (8), the guide rod (7) and the push plate (9) The guide rod (7) is arranged in the semi-cylindrical bore of the ejection tube (1), the upper end of the guide rod (7) is vertically fixedly connected to the push plate (9), and the guide rod (7) passes through the spring (8) and the through hole in the middle of the tail of the semi-cylindrical bore of the ejection tube (1); the lower end of the spring (8) is fixedly connected to the bottom of the ejection tube (1); a connecting shaft is arranged on the right side of the push plate (9), and the connecting shaft is located in the slide groove on the right side of the ejection tube (1); the roller (10) is installed on the right end of the connecting shaft, and the cam (2) rotates to push the roller (10) to drive the connecting shaft to slide downward along the slide groove on the right side of the ejection tube (1), thereby driving the push plate (9) to slide along the slide groove on the right side of the ejection tube (1). The semi-cylindrical bore of the ejection tube (1) moves downward and compresses the spring (8); the bottom plane of the L-shaped material storage trough (11) is connected to the end surface of the semi-circular bore on the upper side of the ejection tube (1) and the angle between the two is 135°; the L-shaped material storage trough (11) is arranged at the upper end of the support column of the launch frame (6); a plurality of escape bottles (13) are stored in the L-shaped material storage trough (11) in sequence; two electric push rods (12) that can be synchronously extended and retracted are provided at the bottom end of the L-shaped material storage trough (11); when the electric push rod (12) retracts, the escape bottle (13) can roll into the semi-cylindrical bore of the ejection tube (1) by its own gravity.

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