CN110979712A

CN110979712A - Automatic locking and unlocking mechanism for lifting platform

Info

Publication number: CN110979712A
Application number: CN201911213358.1A
Authority: CN
Inventors: 倪小川; 王成德; 徐瑞; 秦贞超; 刘轲
Original assignee: Beijing Institute of Specialized Machinery
Current assignee: Beijing Institute of Specialized Machinery
Priority date: 2019-12-02
Filing date: 2019-12-02
Publication date: 2020-04-10
Anticipated expiration: 2039-12-02
Also published as: CN110979712B

Abstract

The invention relates to the field of unmanned aerial vehicle transportation and launching recovery, and discloses an automatic locking and unlocking mechanism for a lifting platform. The mechanism comprises an upper part and a lower part, wherein the upper part comprises an embracing ring, a rotating shaft, a torsional spring and an outer frame; the lower part comprises a limiting groove and a supporting seat, and the limiting groove is fixed on the supporting seat; the upper part is connected with the tray of the lifting platform through the outer frame, and the lower part is connected with the bottom fixing platform of the lifting platform through the supporting seat. According to the invention, the locking mechanism is arranged into an upper part and a lower part and is respectively connected with the moving tray and the bottom fixing platform of the lifting platform, and the locking and unlocking of the hoop are realized by utilizing the torsion spring and the limiting structure and through the contact and separation of the upper part and the lower part under the driving of the lifting of the platform tray, so that the requirements of automatic locking and unlocking are met, an additional automatic control mechanism is not needed, and the cost is reduced.

Description

Automatic locking and unlocking mechanism for lifting platform

Technical Field

The invention relates to the field of unmanned aerial vehicle transportation and launching recovery, in particular to an automatic locking and unlocking mechanism for a lifting platform.

Background

The lifting platform locking mechanism applied in the existing unmanned aerial vehicle transportation, launching and recovery system is mainly of a manual structure, and the locking and unlocking actions of the unmanned aerial vehicle are completed by manual operation of personnel; although other small parts of automatic control mechanisms can complete the automatic locking and unlocking functions of the unmanned aerial vehicle, the control system and the structure are complex, and the cost is high.

Disclosure of Invention

The invention aims to solve the technical problem of providing an automatic locking and unlocking mechanism for a lifting platform, which realizes the reliable locking of an unmanned aerial vehicle or other equipment during transportation in a cabin, the quick automatic unlocking when the unmanned aerial vehicle is lifted out of the cabin through the lifting platform and reduces the cost.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

an automatic locking and unlocking mechanism for a lifting platform comprises an upper part and a lower part, wherein the upper part comprises an embracing ring, a rotating shaft, a torsional spring and an outer frame; the lower part comprises a limiting groove and a supporting seat, and the limiting groove is fixed on the supporting seat;

the upper part is connected with a tray of the lifting platform through an outer frame, and the lower part is connected with a bottom fixing platform of the lifting platform through a supporting seat;

when the unmanned aerial vehicle is recovered, the tray of the lifting platform descends to be close to the bottom fixing platform, the upper part of the lifting platform is in contact with the lower part of the lifting platform and is pressed tightly, the limiting groove of the lower part of the lifting platform is inserted into the outer frame and is in close contact with the embracing ring, the embracing ring overcomes the torsional spring force to gradually close inwards around the rotating shaft under the constraint of the limiting groove until the structure of the unmanned aerial vehicle is completely locked in the embracing ring by the embracing ring;

when unmanned aerial vehicle takes off, lift platform's tray rises, and with the separation of bottom fixed platform, upper portion and lower part separation, the spacing groove of lower part breaks away from in the frame of upper portion, has lost the restraint of spacing groove in the lower part, and the armful ring revolutes the axial both sides under the torsional spring force effect of torsional spring and opens, and locking mechanism unblock this moment, unmanned aerial vehicle structure in the armful ring removes the restraint.

The unmanned aerial vehicle is required to be rapidly and automatically locked and unlocked on a lifting platform and is limited by cost, according to the motion characteristics of the lifting platform and by combining a mature mechanical structure, a locking mechanism is arranged into an upper part and a lower part and is respectively connected with a motion tray and a bottom fixed platform of the lifting platform, and by utilizing a torsion spring and a limiting structure, the clasps are closed and opened by the contact and separation of the upper part and the lower part which are completed under the driving of the lifting of the platform tray, so that the requirements of automatic locking and unlocking are met; and an additional automatic control mechanism is not needed, so that the cost is reduced.

Drawings

FIG. 1 is a schematic diagram of the mechanism of the present invention, (a) upper and lower parts, (b) upper part, and (c) lower part;

FIG. 2 is a schematic view of the locking state of the mechanism of the present invention;

fig. 3 is a schematic view of the mechanism of the present invention in an unlocked state.

In the figure: 1-upper part, 2-lower part, 3-embracing ring, 4-torsion spring, 5-rotating shaft, 6-outer frame, 7-limiting groove and 8-supporting seat.

Detailed Description

The preferred embodiments of the present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1, 2 and 3, the automatic locking and unlocking mechanism for the lifting platform comprises an upper part 1 and a lower part 2, wherein the upper part is connected with a tray of the lifting platform and moves along with the tray, and mainly comprises a hoop 3, a rotating shaft 5, a torsion spring 4 and an outer frame 6, two ends of the rotating shaft 5 are fixed on the outer frame 6, the torsion spring 4 is sleeved on the rotating shaft 5, and the hoop 3 is opened towards two sides around the rotating shaft 5 under the action of the torsion spring force of the torsion spring 4; the lower part is connected with the bottom fixing platform and is kept fixed, and the lower part comprises a limiting groove 7 and a supporting seat 8, wherein the limiting groove 7 is fixed on the supporting seat 8.

Wherein the upper part 1 is connected with a tray of the lifting platform through an outer frame 6, and the lower part 2 is connected with a bottom fixing platform of the lifting platform through a supporting seat 8.

When unmanned aerial vehicle retrieved, lift platform's tray descends, is close to with bottom fixed platform, and upper portion 1 compresses tightly with lower part 2 contact, and lower part 2 spacing groove 7 inserts in frame 6, with embracing 3 in close contact with of ring, embraces ring 3 and overcomes torsional spring power and revolute 5 gradually inwards closed under the restraint of spacing groove 7, until embracing 3 complete with the skid locking of unmanned aerial vehicle structure in embracing ring, locking mechanism locks this moment.

When unmanned aerial vehicle takes off, lift platform's tray rises, and with the separation of bottom fixed platform, upper portion 1 separates with lower part 2, breaks away from in the frame 6 of upper portion 1 from lower part 2's spacing groove 7, has lost the restraint of spacing groove 7 in lower part 2, embraces ring 3 and revolutes 5 to both sides and open under torsional spring 4's torsional spring power, and locking mechanism unblock this moment embraces the sled of the unmanned aerial vehicle structure in the ring 3 and removes the restraint.

Unmanned aerial vehicle is in the transportation, and lift platform's tray is in the position that is close to with bottom fixed platform, and unmanned aerial vehicle passes through locking mechanism to be fixed on lift platform. When a tray bearing the unmanned aerial vehicle ascends, the upper part and the lower part of the locking mechanism are gradually separated, the hooping of the locking mechanism is automatically and quickly opened under the action of the torsion spring, and the unmanned aerial vehicle is unlocked to take off; when unmanned aerial vehicle fell back to lift platform, when the tray descended, locking mechanism's upper portion compressed tightly gradually with lower part, and locking mechanism's spacing groove overcomes the torsional spring power and makes the armful ring closed, and unmanned aerial vehicle retrieves the locking. This process is simple effective, fixed reliable, only realizes unmanned aerial vehicle's automatic locking and unblock through mechanical structure, does not need artificial operation, low cost, and the reliability is high, has shortened unmanned aerial vehicle lift, the operating time of transmission recovery.

Claims

1. The mechanism is characterized by comprising an upper part (1) and a lower part (2), wherein the upper part (1) comprises an embracing ring (3), a rotating shaft (5), a torsion spring (4) and an outer frame (6), two ends of the rotating shaft (5) are fixed on the outer frame (6), the torsion spring (4) is sleeved on the rotating shaft (5), and the embracing ring (3) is opened towards two sides around the rotating shaft (5) under the action of the torsion spring force of the torsion spring (4); the lower part (2) comprises a limiting groove (7) and a supporting seat (8), and the limiting groove (7) is fixed on the supporting seat (8);

the upper part (1) is connected with a tray of the lifting platform through an outer frame (6), and the lower part (2) is connected with a bottom fixing platform of the lifting platform through a supporting seat (8);

when the unmanned aerial vehicle is recovered, a tray of the lifting platform descends and is close to the bottom fixing platform, the upper part (1) is in contact with and pressed against the lower part (2), a limiting groove (7) of the lower part (2) is inserted into the outer frame (6) and is in close contact with the embracing ring (3), the embracing ring (3) overcomes the torsional spring force to close inwards around the rotating shaft (5) gradually under the constraint of the limiting groove (7) until the embracing ring (3) completely locks the unmanned aerial vehicle structure in the embracing ring, and the locking mechanism is locked at the moment;

when unmanned aerial vehicle takes off, lift platform's tray rises, with the separation of bottom fixed platform, upper portion (1) and lower part (2) separation, spacing groove (7) of lower part (2) break away from in frame (6) of upper portion (1), the restraint of spacing groove (7) in lower part (2) has been lost, it opens to both sides to revolute pivot (5) under the torsional spring power of torsional spring (4) to embrace ring (3), the unblock of locking mechanism this moment, the unmanned aerial vehicle structure in embracing ring (3) is relieved the restraint.