CN210555556U - Random folding boarding ladder retracting device for transport airplane - Google Patents
Random folding boarding ladder retracting device for transport airplane Download PDFInfo
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- CN210555556U CN210555556U CN201921617528.8U CN201921617528U CN210555556U CN 210555556 U CN210555556 U CN 210555556U CN 201921617528 U CN201921617528 U CN 201921617528U CN 210555556 U CN210555556 U CN 210555556U
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Abstract
The utility model belongs to aircraft airstair mechanical device field, concretely relates to transportation type aircraft is folding airstair winding and unwinding devices at random. The escalator support frame can horizontally move along the escalator track, and comprises a support frame main body, a motor driving device, a lead screw driving assembly, a lead screw assembly and a gear driving assembly, wherein the motor driving device is fixedly connected with the support frame main body, the motor driving device is respectively fixedly connected with the lead screw driving assembly and the gear driving assembly, the lead screw driving assembly is fixedly connected with the lead screw assembly, the lead screw assembly is respectively fixed on two sides of the motor driving device, the lead screw assembly is fixedly connected with the support frame main body and is arranged in parallel with the escalator track, a rack is arranged on the escalator track, and the rack is meshed with the gear driving assembly. The utility model provides a complicated operation smooth poor fault rate high problem of nature of structure among the prior art.
Description
Technical Field
The utility model belongs to aircraft airstair mechanical device field, concretely relates to transportation type aircraft is folding airstair winding and unwinding devices at random.
Background
The random airstairs are self-carried airstairs on helicopters or airplanes, and can complete the boarding or leaving of passengers and aircrews under the condition of not using ground equipment. The random airstairs usually have two states of being folded and unfolded, wherein the airstairs and the aircrafts can get on and off the helicopter or airplane when being unfolded, and the airstairs are stored in the fuselage when being folded.
The random folding airstairs retracting device is a driving device for folding and unfolding the random folding airstairs, and has the requirements of reliable structure and smooth operation. The state of the existing randomly-folded boarding ladder retracting device for domestic transport airplanes is as follows: the structure is complicated, the operation fluency is poor, the failure rate is high, and the reliability is influenced.
The invention content is as follows:
the utility model provides a transportation type aircraft random folding airstair winding and unwinding devices has solved prior art mesostructure complicacy, and the operation smoothness nature is poor, problem that the fault rate is high.
The utility model discloses a realize through following technical scheme:
a randomly folded boarding ladder retracting device for a transport airplane comprises a boarding ladder bracket and a boarding ladder track, wherein the boarding ladder bracket can horizontally move along the boarding ladder track, the boarding ladder bracket comprises a bracket main body, a motor driving device, a lead screw driving assembly, a lead screw assembly and a gear transmission assembly, the motor driving device is fixedly connected with the bracket main body, the motor driving device is fixedly connected with the lead screw driving assembly and the gear transmission assembly respectively, the lead screw driving assembly is fixedly connected with the lead screw assembly, the lead screw assembly is fixed on two sides of the motor driving device respectively, the lead screw assembly is fixedly connected with the bracket main body and is arranged in parallel with the boarding ladder track, and a rack is arranged on the boarding ladder track and is meshed with the gear transmission assembly.
Further, the motor driving device comprises a motor, a speed reducer and a speed reducer support, wherein the motor is installed on the speed reducer and is integrally fixed on the bracket main body through the speed reducer support.
Furthermore, the screw drive assembly comprises a screw drive shaft, a drive shaft coupler and a right-angle gear steering device, an output shaft at the lower end of the speed reducer is fixedly connected with the screw drive shaft through the drive shaft coupler, and the other end of the screw drive shaft is fixedly connected with an input shaft of the right-angle gear steering device.
Furthermore, the screw assembly comprises a screw shaft coupler, a ball screw and a support, an output shaft of the right-angle gear steering gear is fixedly connected with a screw shaft of the ball screw through the screw shaft coupler, and a screw nut of the ball screw is fixedly connected with the support.
Furthermore, the gear transmission assembly comprises a gear shaft coupler and a gear shaft, and an output shaft at the upper end of the speed reducer is fixedly connected with the gear shaft through the gear shaft coupler.
Further, the airstair track comprises a track main body and a rack, wherein the rack is fixed on the track main body and is meshed with a gear shaft on the airstair bracket.
Compared with the prior art, the utility model discloses following profitable technological effect has:
(1) the utility model discloses a rack and the design of the engaged with slip mode of gear shaft for its winding and unwinding devices accuracy improves, and stability is better.
(2) The utility model discloses a bilateral lead screw drive's design for receive and release more stably, the dynamics is better, has improved the reliability of whole device.
Description of the drawings:
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic sectional view of the present invention;
fig. 3 is a schematic rear view of the present invention;
FIG. 4 is a schematic view of the present invention showing the unfolding effect;
fig. 5 is a schematic view of the folding effect of the present invention.
Description of reference numerals:
300-airstair bracket, 301-bracket body, 302-motor, 303-reducer, 304-reducer bracket, 305-gear shaft coupling, 306-gear shaft, 307-right angle gear steering gear, 308-screw shaft coupling, 309-ball screw, 311-bracket, 312-screw shaft, 313-shaft coupling, 400-airstair track, 401-track body, 402-rack.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
As shown in fig. 1, a randomly folding boarding ladder retracting device for a transport airplane is characterized in that: the escalator guide rail comprises an escalator bracket 300 and an escalator rail 400, wherein the escalator bracket 300 can horizontally move along the escalator rail 400, the escalator bracket 300 comprises a bracket main body 301, a motor driving device, a lead screw transmission assembly, a lead screw assembly and a gear transmission assembly, the motor driving device is fixedly connected with the bracket main body 301, the motor driving device is fixedly connected with the lead screw transmission assembly and the gear transmission assembly respectively, the lead screw transmission assembly is fixedly connected with the lead screw assembly, the lead screw assembly is fixed on two sides of the motor driving device respectively, the lead screw assembly is fixedly connected with the bracket main body 301 and arranged in parallel with the escalator rail 400, a rack 402 is arranged on the escalator rail 400, and the rack 402 is meshed with the gear transmission assembly.
Further, the motor driving device includes a motor 302, a reducer 303, and a reducer bracket 304, where the motor 302 is mounted on the reducer 303 and integrally fixed to the bracket body 301 through the reducer bracket 304.
Further, the screw drive assembly comprises a screw drive shaft 312, a drive shaft coupler 313 and a right-angle gear steering device 307, an output shaft at the lower end of the speed reducer 303 is fixedly connected with the screw drive shaft 312 through the drive shaft coupler 313, and the other end of the screw drive shaft 312 is fixedly connected with an input shaft of the right-angle gear steering device 307. The motor 302 is connected with an input shaft of a speed reducer 303, and two output shafts with different transmission ratios are arranged at the upper end and the lower end of the speed reducer;
further, the screw assembly includes a screw coupling 308, a ball screw 309 and a bracket 311, an output shaft of the right-angle gear steering 307 is fixedly connected with a screw shaft of the ball screw 309 through the screw coupling 308, and a screw nut of the ball screw 309 is fixedly connected with the bracket 311.
Further, the gear transmission assembly comprises a gear shaft coupler 305 and a gear shaft 306, and an output shaft at the upper end of the speed reducer 303 is fixedly connected with the gear shaft coupler 305 and the gear shaft 306.
Further, the airstair rail 400 includes a rail body 401 and a rack 402, the rack 402 is fixed on the rail body 401, and the rack 402 is engaged with the gear shaft 306 on the airstair bracket 300.
Two specific tracks are arranged on two sides of the bracket main body 301 to assist a folding device of the randomly folded airstairs to complete the unfolding and folding of the airstairs. An output shaft at the upper end of the speed reducer 303 is fixedly connected with a gear shaft through a gear shaft coupler to drive the gear shaft to rotate, and the gear shaft is meshed with a rack on the airstair track to drive the airstair bracket and the folding device of the random folding airstair to horizontally move along the airstair track; the output shaft at the lower end of the speed reducer is fixedly connected with the input shaft of the lead screw transmission shaft and the right-angle gear steering gear through the transmission shaft coupler, the output shaft of the right-angle gear steering gear is fixedly connected with the lead screw shaft of the ball screw through the lead screw coupler, and the rotation of the output shaft at the lower end of the speed reducer drives the lead screw shaft to rotate, so that the support fixedly connected with the lead screw nut is driven to horizontally move relative to the bracket main body.
The embodiments given above are preferred examples for implementing the present invention, and the present invention is not limited to the above-described embodiments. Any non-essential addition and replacement made by the technical features of the technical solution of the present invention by those skilled in the art all belong to the protection scope of the present invention.
Claims (6)
1. The utility model provides a transportation class aircraft random folding airstair winding and unwinding devices which characterized in that: the escalator guide rail comprises an escalator bracket (300) and an escalator rail (400), wherein the escalator bracket (300) can horizontally move along the escalator rail (400), the escalator bracket (300) comprises a bracket main body (301), a motor driving device, a lead screw transmission assembly, a lead screw assembly and a gear transmission assembly, the motor driving device is fixedly connected with the bracket main body (301), the motor driving device is fixedly connected with the lead screw transmission assembly and the gear transmission assembly respectively, the lead screw transmission assembly is fixedly connected with the lead screw assembly, the lead screw assembly is fixed on two sides of the motor driving device respectively, the lead screw assembly is fixedly connected with the bracket main body (301) and arranged in parallel with the escalator rail (400), a rack (402) is arranged on the escalator rail (400), and the rack (402) is meshed with the gear transmission assembly.
2. The randomly folded boarding ladder retraction device for transport-type aircraft according to claim 1, characterized in that: the motor driving device comprises a motor (302), a speed reducer (303) and a speed reducer support (304), wherein the motor (302) is installed on the speed reducer (303) and is integrally fixed on the bracket main body (301) through the speed reducer support (304).
3. The randomly folded boarding ladder retraction device for transport-type aircraft according to claim 2, characterized in that: the lead screw drive assembly comprises a lead screw drive shaft (312), a drive shaft coupler (313) and a right-angle gear steering device (307), an output shaft at the lower end of the speed reducer (303) is fixedly connected with the lead screw drive shaft (312) through the drive shaft coupler (313), and the other end of the lead screw drive shaft (312) is fixedly connected with an input shaft of the right-angle gear steering device (307).
4. The randomly folded boarding ladder retraction device for transport-type aircraft according to claim 3, characterized in that: the screw assembly comprises a screw shaft coupling (308), a ball screw (309) and a support (311), an output shaft of the right-angle gear steering gear (307) is fixedly connected with a screw shaft of the ball screw (309) through the screw shaft coupling (308), and a screw nut of the ball screw (309) is fixedly connected with the support (311).
5. The randomly folded boarding ladder retraction device for transport-class airplane as claimed in claim 4, wherein: the gear transmission assembly comprises a gear shaft coupler (305) and a gear shaft (306), and an output shaft at the upper end of the speed reducer (303) is fixedly connected with the gear shaft (306) through the gear shaft coupler (305).
6. The randomly folded boarding ladder retraction device for transport-class airplane as claimed in claim 5, wherein: the airstair rail (400) comprises a rail main body (401) and a rack (402), wherein the rack (402) is fixed on the rail main body (401), and the rack (402) is meshed with a gear shaft (306) on the airstair bracket (300).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921617528.8U CN210555556U (en) | 2019-09-26 | 2019-09-26 | Random folding boarding ladder retracting device for transport airplane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921617528.8U CN210555556U (en) | 2019-09-26 | 2019-09-26 | Random folding boarding ladder retracting device for transport airplane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210555556U true CN210555556U (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921617528.8U Active CN210555556U (en) | 2019-09-26 | 2019-09-26 | Random folding boarding ladder retracting device for transport airplane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210555556U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2756856C1 (en) * | 2021-03-30 | 2021-10-06 | Акционерное общество "Национальный центр вертолетостроения им. М.Л. Миля и Н.И. Камова" (АО "НЦВ Миль и Камов") | Folding helicopter ladder |
-
2019
- 2019-09-26 CN CN201921617528.8U patent/CN210555556U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2756856C1 (en) * | 2021-03-30 | 2021-10-06 | Акционерное общество "Национальный центр вертолетостроения им. М.Л. Миля и Н.И. Камова" (АО "НЦВ Миль и Камов") | Folding helicopter ladder |
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