Combined type delay reset driving device

Abstract

The utility model relates to a combined type delay reset driving device. The combined type driving mechanism matched with the cabin door is adopted, reliable transmission connection for closing and driving the cabin door and returning of the mechanism to the original position are achieved, the problem that the driving mechanism is impacted and damaged when the cabin door is opened is solved through an idle stroke protection mechanism, and meanwhile the driving mechanism is not damaged through electric and manual flexible connection. The utilization rate of the space in the cabin is increased, effective separation of manual driving and electric driving is achieved, and the reliability of completion of switching of multiple motion mode states of the cabin door driving mechanism is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to reset drive machinery technical field, especially relates to a combined type delay reset drive device. BACKGROUND

[0002] At present, the cabin door on the plane needs the cabin door drive mechanism to be used under two kinds of working conditions due to use demand, the cabin door drive mechanism realizes the cabin door closing and reset functions, first, when the plane cabin door is opened under the gravity of the medium, the mechanism has an idle stroke protection mechanism, should be able to avoid the irreversible damage of the water-tight cabin door to the drive mechanism when the water-tight cabin door is opened without power, also can realize the reset of the cabin door drive device, and the manual input of the cabin door drive mechanism and the switching of electric drive / hand drive place higher requirements on the operation space and installation position. SUMMARY

[0003] The utility model discloses a kind of combined type delay reset drive devices, drive mechanism uses idle stroke protection mechanism and electric drive-hand drive flexible coupling avoids the above problems, meets the use demand of various working conditions on the plane.

[0004] Therefore, according to an aspect of the utility model embodiment, a combined type delay reset drive device is provided, which comprises: an electric drive mechanism 1, a manual drive mechanism 2, an idle stroke protection mechanism 3, a flexible shaft 4 and a bevel gear 5;Wherein, the output interface of the manual drive mechanism 2 is connected to the input interface of the electric drive mechanism 1 through the flexible shaft 4, to realize flexible coupling transmission torque;The electric drive mechanism 1 and the idle stroke protection mechanism 3 are engaged through the bevel gear 5 to transmit torque, and the idle stroke protection mechanism 3 comprises a delay output shaft 21, a rotary reset idle stroke structure and a mechanical limiting stroke structure;The mechanical limiting stroke structure further comprises a bracket 3-2-1 and a limiting block 3-2-2, the inner ring of the bracket 3-2-1 comprises a plurality of wedge blocks, the bracket 3-2-1 limits the limiting block 3-2-2 through the side surface of the wedge block, the limiting block 3-2-2 rotates along the adjacent wedge block top circle, when the force is only transmitted to the mechanical limiting stroke structure, the limiting block 3-2-2 is connected with the delay output shaft 21, and the torque is transmitted out through the delay output shaft 21, the connecting key of the limiting block 3-2-2 and the delay output shaft 21 is a second included angle B, the connecting key of the plurality of limiting blocks 3-2-2 of the rotary reset idle stroke structure and the delay output shaft 21 is a first included angle A, the first included angle A is greater than the second included angle B, and the force drives the limiting block 3-2-2 of the delay output shaft 21 to touch the bracket 3-2-1.

[0005] Optionally, the electric drive mechanism 1 further comprises a speed reducer 6 and a motor 8, wherein the motor 8 is a power source of the speed reducer 6, and a power-off brake 11 is further provided to provide a limiting brake torque.

[0006] Optionally, the speed reducer 6 comprises a worm wheel 12, a worm 13 and a planetary assembly 14, the worm wheel 12 and the worm 13 are mutually self-locking, the worm wheel 12 is an outer circle worm wheel and an inner circle gear ring integrated thin wall structure, and simultaneously has the gear ring function of the planetary assembly 14.

[0007] Optionally, when the electric transmission route works, the motor 8 serves as a power source of electric transmission, drives the planetary assembly 14 of the speed reducer 6 to transmit torque to the bevel gear 5, and due to the self-locking characteristics of the worm wheel 12 and the worm 13, the working principle is equivalent to planetary transmission; when the motor stops, the electric drive mechanism 1 is in an electric braking state.

[0008] Optionally, when the manual transmission route works, the power-off brake 11 is braked, when the manual drive mechanism 2 inputs the input end of the worm wheel 12 and the worm 13 of the electric drive mechanism 1 through the soft shaft 4 connected thereto, thereby driving the output end of the planetary assembly 14, when the manual transmission stops, the load is in a braking state under the self-locking of the worm wheel 12 and the worm 13.

[0009] Optionally, the worm 13 is provided with pin holes at both ends, and the worm 13 is connected with the soft shaft 4 through the pin holes.

[0010] Optionally, when the bevel gear 5 rotates, the bevel gear 5 is butted and transmits torque to the delay output shaft 21 through a connecting key, when the bevel gear 5 rotates to perform the cabin door reset movement, the bevel gear set 5 is matched with the delay output shaft 21, and the idle stroke of the cabin door reset is met.

[0011] Optionally, the manual drive mechanism 2 further comprises a manual speed increaser 16 and a hand crank 19, wherein the hand crank 19 is inserted into the input end of the manual drive mechanism 2 corresponding to the cabin door, the torque is transmitted to the manual speed increaser 16 through the hand crank 19, and the soft shaft 4 drives the worm wheel 12 and the worm 13 of the electric drive mechanism 1.

[0012] The utility model adopts a combined drive mechanism suitable for cabin doors, realizes reliable connection and mechanism return to the original position of the transmission of the closed drive cabin door, solves the problem of impact damage to the drive mechanism when the cabin door is opened through the idle stroke protection mechanism, and through the flexible connection of the electric drive and the manual drive, the utilization rate of the cabin space is improved, the effective separation of the manual drive and the electric drive is realized, and the reliability of the completion of the state switching of various movement modes of the cabin door drive mechanism is improved. DRAWINGS

[0013] Figure 1 is the structural diagram of the combined anti-impact cabin door drive device of the utility model;

[0014] Figure 2 is the overall structural layout diagram of the utility model;

[0015] Figure 3Is the cabin door electric work transmission principle diagram of the utility model;

[0016] Figure 4 Is the cabin door manual work transmission principle diagram of the utility model;

[0017] Figure 5 Is the electric drive mechanism 1 reduction gear structure schematic diagram of the utility model;

[0018] Figure 6 Is the manual drive mechanism 1 structure schematic diagram of the utility model;

[0019] Figure 7-1 Is the empty stroke protection mechanism reset movement stroke principle schematic diagram of the utility model;

[0020] Figure 7-2 Is the empty stroke protection mechanism reset movement stroke structure schematic diagram of the utility model

[0021] Figure 8 Is the empty stroke protection mechanism structure form schematic diagram of the utility model;

[0022] Figure 9 Is the limit stroke structure form schematic diagram of the utility model;

[0023] Figure 10-1 Is the system opening movement load transmission schematic diagram of the utility model;

[0024] Figure 10-2 Is the system closing movement load transmission schematic diagram of the utility model;

[0025] Mark explanation:

[0026] 1-electric drive mechanism, 2-manual drive mechanism, 3-empty stroke protection mechanism, 4-soft shaft, 5-bevel gear, 21-delay output shaft, 3-2-1-bracket, 3-2-2-limit block, 11-power loss brake, 6-reducer, 7-reducer housing, 8-motor, 9-electric output shaft, 10-end cover, 12-worm, 13-worm, 14-planet assembly, 15-shaft core, 16-manual speedup device, 17-manual drive housing, 18-signal lamp, 19-hand crank, 20-U-shaped sheet. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] The utility model provides a kind of combined delay reset drive device, as shown in Figure 1-10-2 Manual drive mechanism 2 output interface is connected to electric drive mechanism 1 input interface by flexible shaft 4, and flexible coupling transmission torque is realized;Electric drive mechanism 1 and idle stroke protection mechanism 3 are engaged transmission torque by bevel gear 5, and idle stroke protection mechanism 3 includes delay output shaft 21, rotation reset idle stroke structure and mechanical limit stroke structure;Mechanical limit stroke structure further includes support 3-2-1 and limit stopper 3-2-2, and the inner ring of support 3-2-1 includes multiple wedge blocks, and support 3-2-1 is limited to limit stopper 3-2-2 by wedge block side face, limit stopper 3-2-2 rotates along adjacent wedge block top circle, when force is only transmitted to mechanical limit stroke structure, limit stopper 3-2-2 is connected with delay output shaft 21, and torque is transmitted out by delay output shaft 21, and the connection key of limit stopper 3-2-2 and delay output shaft 21 is second included angle B, and the connection key of multiple limit stoppers 3-2-2 of rotation reset idle stroke structure and delay output shaft 21 is first included angle A, and first included angle A is greater than second included angle B, and force drives delay output shaft 21 to touch the limit stopper 3-2-2 of support 3-2-1.

[0029] Further, electric drive mechanism 1 further includes speed reducer 6 and motor 8, wherein motor 8 is used as the power source of speed reducer 6, and power brake 11 is further provided to provide the braking torque after limiting.

[0030] Further, speed reducer 6 includes worm gear 12, worm 13 and planetary assembly 14, worm gear 12 and worm 13 are self-locking, and worm gear 12 is an integrated thin-wall structure of outer circle worm gear and inner tooth ring, and simultaneously has the function of the gear ring of planetary assembly 14.Worm 13 and connected flexible shaft 4 will not follow the movement in electric mode, and the switching of working mode by manual operation is avoided by self-locking;End cover 10 is used for adjusting the axial gap of worm 13, and worm gear 12 adopts the integrated thin-wall structure of outer circle worm gear and inner tooth ring, and simultaneously provides the function of the gear ring of planetary assembly 14, and both worm gear 12 and worm 13 adopt nitriding steel nitriding treatment to ensure wear resistance.

[0031] Further, when the electric transmission route works, motor 8 is used as the power source of electric transmission to drive planetary assembly 14 of speed reducer 6 to transmit torque to bevel gear 5, and the working principle is equivalent to planetary transmission because worm gear 12 and worm 13 have self-locking characteristics, and when motor stops, electric drive mechanism 1 is in electric braking state.

[0032] Further, when the manual transmission route works, the power-off brake 11 is engaged, when the manual drive mechanism 2 drives the worm wheel 12 and the worm 13 of the electric drive mechanism 1 through the soft shaft 4 connected thereto, the output end of the planetary assembly 14 is driven, when the manual transmission stops, the load is in the braking state under the self-locking of the worm wheel 12 and the worm 13.

[0033] Further, the worm 13 is provided with a pin hole at both ends, and the worm 13 is connected with the soft shaft 4 through the pin hole. The worm 13 is provided with the same pin hole at both ends, and the pin holes at both ends can correspond to different manual transmission routes and be connected to multiple manual drive mechanisms 2. The worm 13 is fixedly connected with the soft shaft 4 through the pin hole.

[0034] Further, when the bevel gear 5 rotates, the bevel gear 5 is butted and transmits torque with the delay output shaft 21 through the connecting key, when the bevel gear 5 rotates to perform the cabin door reset movement, the bevel gear set 5 matches the delay output shaft 21 to meet the idle stroke of the cabin door reset. When the bevel gear 5 rotates to perform the cabin door closing movement, the bevel gear 5 is butted and transmits torque with the delay output shaft 21 through the connecting key of its own structure, when the bevel gear 5 rotates to perform the cabin door reset movement, the bevel gear 5 and the delay output shaft 21 can meet the idle stroke requirement of the cabin door reset, and can avoid irreversible damage to the drive mechanism when the cabin door is opened without power. When the bevel gear 5 rotates to perform the cabin door closing movement, the bevel gear 5 is butted and transmits torque with the delay output shaft 21 through the connecting key of its own structure, and the aircraft cabin door is closed under the action of the delay output shaft 21.

[0035] Further, the manual drive mechanism 2 further comprises a manual speed increaser 16 and a hand crank 19, wherein the hand crank 19 is inserted into the input end of the manual drive mechanism 2 corresponding to the cabin door, the torque is transmitted to the manual speed increaser 16 through the hand crank 19, and the soft shaft 4 drives the worm wheel 12 and the worm 13 of the electric drive mechanism 1.

[0036] Further, the soft shaft 4 connects the output interface of the manual drive mechanism 2 to the input interface of the electric drive mechanism 1, the soft shaft 4 has a certain bending ability and a large deformation, and is provided with a shaft core 15 and other components inside, and the soft shaft 4 provides necessary conditions for flexible arrangement of manual operation space and on-board.

[0037] Embodiment

[0038] Referring to Figure 1 and Figure 2 , the combined anti-impact cabin door drive device comprises an electric drive mechanism 1, a manual drive mechanism 2 and an idle stroke protection mechanism 3; the electric drive mechanism 1 and the manual drive mechanism 2 are flexibly connected through a soft shaft 4;

[0039] Referring to Figure 3 and Figure 5When the combined anti-impact door drive device electric transmission route works, the motor 8 serves as the power source of electric transmission, driving the planetary assembly 14 to transmit torque to the bevel gear set 5. Since the worm gear 12 and the worm 13 have self-locking characteristics, their working principle is equivalent to planetary transmission, and finally the closing and resetting functions of the door can be realized. Therefore, when the motor stops and the brake is engaged, the entire mechanism is in an electric braking state. The worm gear 12 and the worm 13 input end of the electric drive mechanism 1 fixedly connected to the drive shaft 4 realize the manual closing and resetting function of the door.

[0040] Referring to Figure 4 When the manual transmission route works, the input end of the planetary assembly 14 is locked due to the engagement of the power-off brake 11 of the motor 8, so that the worm gear 12 and the worm 13 of the electric drive mechanism 1 transmit torque when the manual drive mechanism 2 drives the drive shaft 4, thereby driving the output end of the planetary assembly 14 to realize the closing and resetting function of the door. At the same time, when the manual work stops, the load is in a braking state under the self-locking characteristics of the worm gear 12 and the worm 13.

[0041] Referring to Figure 6 The manual drive mechanism 2 is composed of a manual speed increaser 16, a manual drive housing 17, and a signal lamp 18. The speed-up ratio of the manual speed increaser is usually designed according to the comprehensive speed-down ratio of the worm gear 12 and the worm 13 and the planetary speed-down ratio. The signal lamp 18 is used to display whether the door closing state is in place when the manual work is performed. The manual drive mechanism 2 has the function of driving any single door. When the door is manually driven, the hand crank 19 is inserted into the input end of the manual drive mechanism 2 corresponding to the door, and the manual force is transmitted to the manual speed increaser 16 through the hand crank. Further, the manual drive housing 17 of the manual drive mechanism 2 is provided with a U-shaped sheet 20, which can be used for the installation and fixation of the hand crank 19.

[0042] Referring to Figure 7-1 and Figure 7-2 The idle stroke protection mechanism 3 transmits torque through the delay output shaft 21. When the bevel gear set 5 rotates to perform the door closing movement, the bevel gear set 5 and the delay output shaft 21 are connected and transmit torque through the structure connection key.

[0043] Referring to Figure 8 、 Figure 9 、 Figure 10-1 and Figure 10-2When the bevel gear set 5 rotates to perform the cabin door resetting movement, because the cabin door movement stroke is in the protection range of the limiting stroke structure 3-2, the mechanical impact when the cabin door is opened cannot act on the electric drive mechanism 1, so that the irreversible damage to the drive mechanism can be avoided when the cabin door is opened without power. When the system is started, the delay output shaft 21 is subjected to system load movement, driving the limiting block 3-2-2 to rotate, and the limiting block 3-2-2 transmits the load to the aircraft structure through the wedge side of the support 3-2-1, so as to avoid damage to the electric mechanism; when the electric motor hooks the door, when the bevel gear set 5 rotates to perform the cabin door closing movement, the bevel gear set 5 and the delay output shaft 21 are connected through the self-structure connecting key and transmit the torque, and the aircraft cabin door is subjected to the action of the delay output shaft to realize the closing movement.

[0044] The above is only a specific embodiment of the present application, which is described in detail, and the part not described in detail is the conventional technology. However, the protection scope of the present application is not limited to this, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. The protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A combined delayed reset drive device, characterized in that, It comprises: Electric drive mechanism (1), manual drive mechanism (2), air travel protection mechanism (3), soft shaft (4) and bevel gear (5); wherein the output interface of manual drive mechanism (2) is connected to the input interface of electric drive mechanism (1) through soft shaft (4), realizes flexible coupling transmission torque; electric drive mechanism (1) and air travel protection mechanism (3) are engaged through bevel gear (5) transmission torque, air travel protection mechanism (3) includes delay output shaft (21), rotation reset air travel structure and mechanical limit travel structure;Mechanical limit travel structure further includes support (3-2-1) and limit block (3-2-2), the inner ring of support (3-2-1) includes a plurality of wedge blocks, support (3-2-1) is limited to limit block (3-2-2) through the side of wedge block, limit block (3-2-2) rotates along the adjacent wedge block top circle, when the force is only transmitted to mechanical limit travel structure, limit block (3-2-2) is connected with delay output shaft (21), and torque is transmitted out through delay output shaft (21), the connection key of limit block (3-2-2) and delay output shaft (21) is second included angle B, the connection key of a plurality of limit blocks (3-2-2) of rotation reset air travel structure and delay output shaft (21) is first included angle A, first included angle A is greater than second included angle B, force drives delay output shaft (21) to touch the limit block (3-2-2) of support (3-2-1).

2. The apparatus of claim 1, wherein, Electric drive mechanism (1) further includes reducer (6) and motor (8), wherein motor (8) is used as the power source of reducer (6), further provided with power-off brake (11), provides the brake torque after limiting.

3. The apparatus of claim 2, wherein, Reducer (6) includes worm wheel (12), worm (13) and planetary assembly (14), worm wheel (12) and worm (13) are mutually self-locking, worm wheel (12) is the outer circle worm gear and the inner tooth ring integral thin wall structure, simultaneously has the gear ring function of planetary assembly (14).

4. The apparatus of claim 3, wherein, When electric drive route works, motor (8) is used as the power source of electric drive, drives the planetary assembly (14) of reducer (6) to bevel gear (5) transmission torque, because worm wheel (12) and worm (13) have self-locking characteristics, its working principle is equivalent to planetary transmission, when motor stops, electric drive mechanism (1) is in electric brake state.

5. The apparatus of claim 3, wherein, When manual drive route works, power-off brake (11) is embraced brake, when manual drive mechanism (2) is connected through soft shaft (4), corresponding drive worm wheel (12) and worm (13) input end of electric drive mechanism (1), thereby drive the output end of planetary assembly (14), when manual drive stops, under the self-locking of worm wheel (12) and worm (13), is in brake state.

6. The apparatus of claim 3, wherein, Both ends of worm (13) are provided with pin holes, and worm (13) is connected with soft shaft (4) through the pin holes.

7. The apparatus of claim 3, wherein, When bevel gear (5) rotates, bevel gear (5) and delay output shaft (21) are butt jointed through connecting key and transmit torque, when bevel gear (5) rotates and executes cabin door reset movement, bevel gear (5) and delay output shaft (21) are matched, satisfy the air travel of cabin door reset.

8. The apparatus of claim 3, wherein, The manual driving mechanism (2) further comprises a manual speed increaser (16) and a hand crank (19), wherein the hand crank (19) is inserted into the input end of the manual driving mechanism (2) corresponding to the cabin door, and the torque is transmitted to the manual speed increaser (16) through the hand crank (19), so as to drive the worm gear (12) and the worm (13) of the electric driving mechanism (1) through the soft shaft (4).

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