CN218788333U - Stroke protection device - Google Patents

Abstract

The utility model relates to a stroke protection field of screw drive hatch door. Which proposes a stroke protection device. The device includes: camshaft (2), cam subassembly (3) and micro-gap switch subassembly (7), wherein: a cam component (3) is fixed on the camshaft (2); when the cam component (3) rotates, the micro switch component (7) is triggered. The utility model discloses a different angles come controlgear's operating stroke between at least one cam stroke high point, through decelerator, solved the problem that main drive speed is too high in order to the unable setting of angle, improved the stroke of hatch door motion accuracy of control and the reliability that the task was accomplished that targets in place.

Description

Stroke protection device

Technical Field

The utility model belongs to the stroke protection field of screw drive hatch door relates to a gear reduction unit and mechanism that micro-gap switch output signal was pressed to cam.

Background

At present, the stroke control of screw-driven cabin doors (such as aircraft doors) generally adopts in-place switches installed at two ends of a working stroke to directly output in-place signals to an electrical control system, but because in some special cases, such as: due to the mechanical structure and space limitations, switches cannot be directly mounted in place at both ends of the operating position of the device. In the process of signal feedback, a reasonable cam contact device is arranged according to the angle formed by converting the working distance, and meanwhile, the requirement of reducing the high-speed main transmission speed to a preset speed is met, so that the safety and controllability of the triggering process of the microswitch are ensured

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem:

in the process of signal feedback, a reasonable cam contact device is required to be arranged through the angle formed by converting the working distance, and meanwhile, the requirement of reducing the high-speed main transmission speed to a preset speed is met, otherwise, the safety and controllability of the triggering process of the microswitch cannot be guaranteed.

The utility model provides a stroke protection device, include:

the device comprises a shell 1, wherein a cam shaft 2 and a microswitch component 7 are arranged in the shell 1;

a cam component 3 is fixed on the camshaft 2;

rotation of the cam assembly 3 triggers the microswitch assembly 7.

When the equipment is in the working stroke in place, the stroke high points on the cam are touched through the rotating direction of the cam shaft and then press the micro switch assembly, and after the equipment stroke is controlled in place, the cam assembly rotates in the opposite direction and touches the micro switch through different stroke high points.

Further, the cam assembly 3 comprises at least one cam 3-1, the microswitch assembly 7 comprises at least one microswitch 7-1, and the number of the microswitches is consistent with the number of the cams. The number of the cams corresponds to the control points of the equipment, and the angle between the high points of the cam stroke corresponds to the in-place distance set in the device, so that the requirement of in-place control of the system in a single circle is met.

Furthermore, at least one stroke high point is arranged on the cam 3-1 and used for triggering the corresponding microswitch 7-1.

Further, a speed reduction mechanism 5 is included, and the speed reduction mechanism 5 is connected to one side of the camshaft 2. The speed of the input shaft is converted from high speed to low speed by the speed reducing mechanism, the safety and controllability of the triggering process of the microswitch are guaranteed, and meanwhile, the speed reducing ratio of the speed reducing mechanism can be set according to different working distances and is adaptive to working environments under various conditions.

Further, a bracket 8 is provided on the housing 1, and the reduction mechanism 5 is mounted on the housing 1 through the bracket 8.

Furthermore, the speed reducing mechanism 5 adopts one-stage or multi-stage planetary speed reducing gears, and each stage of planetary speed reducing mechanism has the same size and structure and shares the same gear ring.

Further, a U-shaped spring piece 6 is arranged between the cam component 3 and the micro-switch component 7, and the micro-switch component 7 is triggered through the U-shaped spring piece 6.

Further, an observation disc 4 is fixed on the other side of the camshaft 2, scales are marked on the observation disc 4, and when the scales rotate to the corresponding arrow of the shell 1, the engineering equipment is indicated to run to the stroke end point.

The utility model discloses a different angles come controlgear's operating stroke between the cam stroke high point, through decelerator, have solved the too high problem that can't set up with the angle of final drive speed, have improved the stroke of hatch door motion accuracy of control and the reliability of task completion that targets in place.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a stroke protection device according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a stroke protection device according to an embodiment of the present invention.

Wherein: the device comprises a shell 1, a cam shaft 2, a cam assembly 3, an observation disc 4, a speed reducing mechanism 5, a U-shaped spring piece 6, a micro switch assembly 7, a support 8, a micro switch 7-1 and a cam 3-1.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention.

Features and illustrative embodiments of various aspects of the invention are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. The present invention is in no way limited to any specific arrangement and method set forth below, but rather covers any improvements, substitutions and modifications of structures, methods and devices without departing from the spirit of the present invention. In the drawings and the following description, well-known structures and techniques are not shown to avoid unnecessarily obscuring the present invention.

It should be noted that, in case of conflict, the embodiments and features of the embodiments of the present invention may be combined with each other, and the embodiments may be referred to and cited as each other. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Fig. 1 is a schematic structural diagram of a stroke protection device according to an embodiment of the present invention; fig. 2 is a schematic diagram of a stroke protection device according to an embodiment of the present invention. Wherein, the left side view of fig. 2 is a schematic diagram of counterclockwise rotation; the right side view of fig. 2 is a clockwise rotation schematic.

Referring to a structural schematic diagram 1 and a principle schematic diagram 2, the novel stroke protection device mainly comprises: the device comprises a shell 1, a cam shaft 2, a cam assembly 3, an observation disc 4, a speed reducing mechanism 5, a U-shaped spring piece 6, a micro-switch assembly 7 and a bracket 8.

Wherein: a cam component 3 is fixed on the camshaft 2; rotation of the cam assembly 3 triggers the microswitch assembly 7. The cam assembly 3 comprises at least one cam 3-1; the microswitch assembly 7 comprises at least one microswitch 7-1; the number of the micro switches 7-1 is consistent with the number of the cams 3-1. At least one stroke high point is arranged on the cam 3-1; the high point of travel triggers the corresponding microswitch 7-1. The speed reduction mechanism 5 is connected to one side of the camshaft 2. An observation disc 4 is fixed on the other side of the camshaft 2, and scales are marked on the observation disc 4. A bracket 8 is arranged on the shell 1; the reduction mechanism 5 is mounted on the housing 1 via a bracket 8. The speed reducing mechanism 5 adopts one-stage or multi-stage planetary speed reducing gears, and each stage of planetary speed reducing mechanism has the same size and structure and shares the same gear ring. A U-shaped spring piece 6 is arranged between the cam component 3 and the micro-switch component 7, and the micro-switch component 7 is triggered through the U-shaped spring piece 6.

In some embodiments, a cam assembly 3 is secured to the camshaft 2, and rotation of the cam assembly 3 triggers a microswitch assembly 7. When the cam assembly rotates clockwise/anticlockwise, the cam assembly touches the microswitch through different stroke high points.

In some embodiments, the cam assembly 3 includes at least one cam 3-1 and the microswitch assembly 7 includes at least one microswitch 7-1, the number of microswitches corresponding to the number of cams. At least one stroke high point is arranged on the cam 3-1 and used for triggering the corresponding microswitch 7-1.

In some embodiments, the reduction mechanism 5 is connected to one side of the camshaft 2. The casing 1 is provided with a bracket 8, and the speed reducing mechanism 5 is installed on the casing 1 through the bracket 8. The speed reduction mechanism 5 adopts a one-stage or multi-stage planetary speed reduction gear mechanism. Through one-stage or multi-stage gear reduction, reasonable angles corresponding to the movement stroke of the cabin door are set, and the working stroke of equipment corresponding to the stroke high-point included angle of the single-circle inner cam is achieved. A U-shaped spring piece 6 is arranged between the cam component 3 and the micro-switch component 7, and the micro-switch component 7 is triggered through the U-shaped spring piece 6. An observation disc 4 is fixed on the other side of the camshaft 2, and scales are marked on the observation disc 4.

It should be noted that the above-mentioned flow operations may be combined and applied in different degrees, and for simplicity, implementation manners of various combinations are not described again, and those skilled in the art may flexibly adjust the sequence of the above-mentioned operation steps according to actual needs, or flexibly combine the above-mentioned steps, and the like.

It should be noted later that: the above embodiments are only used to illustrate the technical solutions of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the protection scope of the present invention.

Claims (3)

1. A stroke protector, comprising:

the device comprises a shell (1) and a bracket (8), wherein the bracket (8) is arranged on the lower half part of the outer side of the shell (1);

a speed reducing mechanism (5) is arranged in the support (8), the speed reducing mechanism (5) comprises a plurality of stages of planetary speed reducing gears, and each stage of planetary speed reducing mechanism has the same size and structure and shares the same gear ring;

a cam shaft (2) is arranged below the inner part of the shell (1), a cam component (3) and an observation disc (4) are sleeved on the cam shaft (2), and scales are marked on the observation disc (4);

a micro switch assembly (7) is arranged above the cam assembly (3), a U-shaped spring piece (6) is arranged between the cam assembly (3) and the micro switch assembly (7), and the micro switch assembly (7) is triggered through the U-shaped spring piece (6);

the camshaft (2) extends outwards and penetrates through the shell (1), and the speed reducing mechanism (5) is sleeved on the camshaft (2) inside the support (8).

2. The stroke protection device of claim 1, wherein:

the cam component (3) comprises at least one cam (3-1);

the micro switch assembly (7) comprises at least one micro switch (7-1);

the number of the micro switches (7-1) is consistent with that of the cams (3-1).

3. The stroke protection device of claim 2, wherein:

at least one stroke high point is arranged on the cam (3-1);

the high point of the travel triggers the corresponding microswitch (7-1).

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