CN112412716B

CN112412716B - Automatic power-off storage device

Info

Publication number: CN112412716B
Application number: CN202011113054.0A
Authority: CN
Inventors: 李平; 王栋; 华方伍; 王康; 左小涛
Original assignee: Wuhan Huazhong Tianjing Tongshi Technology Co ltd
Current assignee: Wuhan Huazhong Tianjing Tongshi Technology Co ltd
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2022-09-06
Anticipated expiration: 2040-10-16
Also published as: CN112412716A

Abstract

The invention discloses an automatic power-off storage device, which comprises a load gear, a driving motor, an electromagnetic brake, a first driven gear and a winding spring, wherein the load gear is arranged on a load and rotates around a main shaft, the driving motor, the electromagnetic brake, the first driven gear and the winding spring are arranged on a machine body, the winding spring is provided with a second driven gear, an anti-rotation gear is arranged at the lower right part of the second driven gear, mechanical energy is stored in the power-on process through the winding of the winding spring, and after the power of equipment is off, the load is automatically rotated to a storage state through the stored mechanical energy, so that a glass window is effectively protected.

Description

Automatic power-off storage device

Technical Field

The invention belongs to the technical field of photoelectricity, and particularly relates to an automatic power-off storage device for airborne photoelectric equipment.

Background

The airborne photoelectric equipment can roll up hard objects such as ground stones and the like in the takeoff and landing stages of the carrier, damage is caused to window glass of the photoelectric equipment, and the imaging effect is influenced. Therefore, the general airborne photoelectric equipment has a collection function, and under the normal working condition, the glass window is rotated to a collection position through the original driving motor, namely, the window glass is rotated to the vertical upward direction for protection.

However, the window glass cannot be stored in case of unexpected power failure or inconvenient power on.

One method for solving the problems is to design a large-capacity energy storage capacitor, store electric energy and use the electric energy after power failure, but the energy required for storing a load is relatively large, and for an onboard product, the weight, the volume and the reliability of the onboard product are difficult to meet after the large-capacity energy storage capacitor is configured.

Disclosure of Invention

In view of the above improved requirements of the prior art, the present invention provides an automatic power-off storage device with small size, light weight, low cost and high reliability.

The technical scheme adopted by the invention for solving the technical problems is as follows: an automatic power-off collecting device comprises a load rotating around a machine body through a main shaft, a glass window arranged on the load, a load gear arranged on the load and rotating around the main shaft, a driving motor, an electromagnetic brake, a first driven gear and a winding spring, wherein the driving motor, the electromagnetic brake, the first driven gear and the winding spring are arranged on the machine body, the winding spring is provided with a second driven gear, an anti-rotation gear is arranged on the lower right side of the second driven gear, an output shaft of the driving motor is meshed with the first driven gear through a right-angle gear, the first driven gear and the second driven gear are respectively meshed with the load gear, a winding spring protection plate is arranged between the load gear and the winding spring and is fixedly connected with the winding spring, a separation rod is arranged on the outer edge part of the load gear, a base plate rotating around a pin shaft is further arranged on the machine body, one end of the base plate is connected with an extension spring, and the outer edge part of the base plate is close to the end of the electromagnetic brake, one end is meshed with the second driven gear or the anti-rotation gear through the tooth part.

The automatic power-off storage device is characterized in that two sides of the anti-rotation gear are respectively provided with a limiting block.

According to the automatic power-off collection device, the rotation angle of the rotation-preventing gear around the machine body is defined as theta 1, the rotation angle of the load gear when the separating rod contacts the coil spring protection plate until the separating rod is completely separated is defined as theta 2, and the theta 1 is larger than the theta 2.

The invention has the beneficial effects that: the energy is stored in the coil spring by the driving motor, and then the spring, the electromagnetic brake and the anti-rotation gear are used for separating and keeping the power-off automatic collection device from the load; after the system is powered off, the electromagnetic brake is unlocked, so that the power-off automatic collection device is meshed with the load gear, and the load is turned to a collection state through the coil spring, thereby realizing the power-off automatic collection function. The whole device is small in size and light in weight, and is low in cost and higher in reliability compared with a driving mode through an energy storage capacitor. The device is suitable for various airborne photoelectric products.

Drawings

FIG. 1 is a schematic view of the construction of the present invention (see-through treatment of the coil spring shields);

FIG. 2 is an enlarged schematic view of the load gear and coil spring portion of the present invention;

FIG. 3 is a schematic illustration of the stowed state (upper limit state) of the present invention;

FIG. 4 is a schematic view of the lower limit state of the present invention (see-through process of coil spring cover).

The various reference numbers are: 1-electromagnetic brake, 2-extension spring, 3-bottom plate, 4-pin shaft, 5-coil spring, 6-second driven gear, 7-anti-rotation gear, 8-limiting block, 9-coil spring protection plate, 10-load gear, 11-first driven gear, 12-separation rod, 13-glass window, 14-load, 15-driving motor, 16-machine body, 17-main shaft.

Detailed Description

The invention is further described with reference to the following figures and examples.

Referring to fig. 1 and 2, the automatic power-off storage device disclosed by the invention comprises a load 14 (photoelectric device) rotating around a machine body 16 through a main shaft 17 and a glass window 13 arranged on the load 14, wherein a load gear 10 is arranged on the load 14 and rotates around the main shaft 17, a driving motor 15, an electromagnetic brake 1, a first driven gear 11 and a rolling spring 5 are respectively arranged on the machine body 16, a second driven gear 6 is arranged on the rolling spring 5, an anti-rotation gear 7 is arranged at the lower right side of the second driven gear 6, an output shaft of the driving motor 15 is meshed with the first driven gear 11 through a right-angle gear, the first driven gear 11 and the second driven gear 6 are respectively meshed with the load gear 10, a rolling spring guard plate 9 is arranged between the load gear 10 and the rolling spring 5, the rolling spring guard plate 9 is tightly connected with the rolling spring 5, a separation rod 12 is arranged at the outer edge part of the load gear 10, the machine body 16 is further provided with a pin shaft 4 and a bottom plate 3 rotating around the pin shaft 4, one end of the bottom plate 3 is connected with an extension spring 2, the outer edge part of the end part of the bottom plate is close to the brake rod end of the electromagnetic brake 1, and the other end of the bottom plate is meshed with a second driven gear 6 or an anti-rotation gear 7 through a tooth part.

When a driving motor 15 is electrified to work, the automatic power-off storage device drives a load gear 10 to rotate clockwise through a first driven gear 11 so as to drive a second driven gear 6 to rotate anticlockwise, so that a coil spring 5 is tightened to start energy storage; when the load gear 10 rotates, the separating rod 12 is driven to rotate to push the coil spring protection plate 9 to be far away, meanwhile, the bottom plate 3 is driven to rotate clockwise around the pin shaft 4, the tooth part at one end of the bottom plate 3 is meshed with the anti-rotation gear 7 and does not move, the extension spring 2 at the other end is stretched for energy storage, the second driven gear 6 is disengaged from the load gear 10 and is switched to be meshed with the anti-rotation gear 7, and at the moment, the coil spring 5 stops being tightened and keeps in an energy storage state; when the load gear 10 continues to rotate until the end outer edge part of the extension spring 2 of the bottom plate 3 is electrified, the extended brake lever of the electromagnetic brake 1 is clamped, and the coil spring 5 and the load gear 10 are kept in a separated state; when the system is powered off or is powered off accidentally, the brake rod of the electromagnetic brake 1 is automatically contracted when the system is powered off, one end of the bottom plate 3 is not limited by the brake rod any more, the bottom plate rotates anticlockwise around the pin shaft 4 under the action of the extension spring 2, the other end of the bottom plate is disengaged from the anti-rotation gear 7 and is switched to be engaged with the load gear 10, the load gear 10 rotates anticlockwise under the action of the torsion of the coil spring 5 to drive the load 14 to rotate to a storage state, the protection window 13 of the load 14 faces upwards to be in a protection state, and the power-off automatic storage function of the airborne photoelectric equipment is achieved.

Two sides of the anti-rotation gear 7 are respectively provided with a limiting block 8 which can prevent the anti-rotation gear 7 from rotating under the torsion action of the coil spring, but the anti-rotation gear 7 has a certain angle of activity amount theta 1, the activity angle theta 1 is larger than an angle theta 2 from just contacting the coil spring guard plate 9 to complete separation of the separation rod 12, and the second driven gear 6 is meshed with the load gear 10 and the anti-rotation gear 7 simultaneously in the process. Theta 1 is larger than theta 2, so that the rotation of the automatic power-off storage device in the process of switching and meshing is ensured, and the locking is avoided.

Because the energy storage process of the coil spring 5 is that the coil spring rotates to the lower limit position (shown in figure 4) from the storage state (shown in figure 3) and is a full stroke, but the coil spring is at a random position when the coil spring is powered off and is stored, the storage stroke is smaller than the energy storage stroke, and the torsion force is continuously increased after the coil spring is used for many times. The proper tension of the extension spring 2 is selected, and when the torsion of the coil spring 5 is overloaded, the load gear 10 can automatically separate from the second driven gear 6 under the action of the driving motor 15, so that slipping is realized, and the phenomenon that the torsion of the coil spring 5 is too large and fails after multiple uses is avoided.

It will be understood by those skilled in the art that the foregoing is only an exemplary embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, since various modifications, substitutions and improvements within the spirit and scope of the invention are possible and within the scope of the appended claims.

Claims

1. An automatic power-off storage device comprises a load (14) and a glass window (13), wherein the load (14) rotates around a machine body (16) through a main shaft (17), and the glass window (13) is arranged on the load (14), and is characterized in that: the energy storage device is characterized by further comprising a load gear (10) arranged on a load (14) and rotating around a spindle (17), and a driving motor (15), an electromagnetic brake (1), a first driven gear (11) and a rolling spring (5) arranged on a machine body (16), wherein a second driven gear (6) is arranged on the rolling spring (5), an anti-rotation gear (7) is arranged below the second driven gear (6), an output shaft of the driving motor (15) is meshed with the first driven gear (11) through a right-angle gear, the first driven gear (11) and the second driven gear (6) are respectively meshed with the load gear (10), the driving motor (15) drives the load gear (10) to rotate clockwise through the first driven gear (11) when in electrified work to drive the second driven gear (6) to rotate anticlockwise so as to enable the rolling spring (5) to be tightened up to start energy storage, a rolling spring protection plate (9) is arranged between the load gear (10) and the rolling spring (5), the spring rolling protection plate (9) is fixedly connected with a spring (5), a separation rod (12) is arranged at the outer edge part of the load gear (10), a pin shaft (4) and a bottom plate (3) rotating around the pin shaft (4) are further arranged on the machine body (16), one end of the bottom plate (3) is connected with an extension spring (2), the outer edge part of the end part of the bottom plate is close to the braking rod end of the electromagnetic brake (1), and the other end of the bottom plate is meshed with a second driven gear (6) or an anti-rotation gear (7) through a tooth part; when the load gear (10) rotates, the separating rod (12) is driven to rotate to push the coil spring protection plate (9) to be far away, meanwhile, the bottom plate (3) is driven to rotate clockwise around the pin shaft (4), the tooth part at one end of the bottom plate (3) is meshed with the anti-rotation gear (7), the extension spring (2) at the other end is stretched for energy storage, the second driven gear (6) is disengaged from the load gear (10) and is switched to be meshed with the anti-rotation gear (7), the coil spring (5) stops tightening and keeps in an energy storage state, when the load gear (10) continues to rotate to the outer edge part of the end of the extension spring (2) of the bottom plate (3), the extension brake rod of the electromagnetic brake (1) is clamped, and the coil spring (5) and the load gear (10) keep in a separated state; when the system is powered off or is powered off accidentally, the power-off brake rod of the electromagnetic brake (1) automatically contracts, one end of the bottom plate (3) rotates anticlockwise around the pin shaft (4) under the action of the extension spring (2), the other end of the bottom plate is disengaged from the engagement of the anti-rotation gear (7) and is switched to be engaged with the load gear (10), and the load gear (10) rotates anticlockwise under the torsion action of the rolling spring (5) to drive the load (14) to rotate to a storage state.

2. The automatic power-off storage device as claimed in claim 1, wherein the rotation-preventing gear (7) has a stopper (8) on each side.

3. The automatic power-off storage device as claimed in claim 2, wherein the rotation-preventing gear (7) rotates around the body (16) by an angle θ 1, and the rotation angle of the load gear (10) when the separating rod (12) contacts the coil spring guard (9) until the separating rod is completely separated is θ 2, then θ 1 > θ 2.