CN113277073A - Mechanical energy taking mechanism and self-energy-feeding brake device - Google Patents
Mechanical energy taking mechanism and self-energy-feeding brake device Download PDFInfo
- Publication number
- CN113277073A CN113277073A CN202110734579.4A CN202110734579A CN113277073A CN 113277073 A CN113277073 A CN 113277073A CN 202110734579 A CN202110734579 A CN 202110734579A CN 113277073 A CN113277073 A CN 113277073A
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- gear
- shaft
- mechanical energy
- reduction gear
- airplane wheel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/32—Alighting gear characterised by elements which contact the ground or similar surface
- B64C25/42—Arrangement or adaptation of brakes
- B64C25/44—Actuating mechanisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/02—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with mechanical assistance or drive
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Transportation (AREA)
- Aviation & Aerospace Engineering (AREA)
- Gear Transmission (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a mechanical energy taking mechanism, which comprises: the device comprises an accelerating gear, a gear shaft, a first reducing gear, a second reducing gear and an output shaft, wherein an external meshing accelerating gear set is formed between the accelerating gear and the gear end of the gear shaft; the first reduction gear is fixed on the shaft of the gear shaft; an external meshing reduction gear set is formed between the second reduction gear and the first reduction gear, and the second reduction gear is fixed on the output shaft. The mechanical fetching mechanism provided by the invention has the advantages of compact structure, high power-weight ratio and high reliability, can be suitable for the fields of brake systems of any airplanes, automobiles and industrial machines, can adjust the transmission ratio and the center distance by adjusting the tooth number and the modulus of two groups of gear sets according to the space size limitation of installation occasions, and meets the requirements of output rotating speed and installation requirements.
Description
Technical Field
The invention relates to the technical field of brake systems, in particular to a mechanical energy taking mechanism and a self-energy-feeding brake device.
Background
The aircraft brake system is an important component of a modern aircraft, is mainly used for dissipating kinetic energy of the aircraft during ground running, ensures braking stop of the aircraft, prevents wheels from being excessively worn, can cooperate with other airborne systems to realize turning, parking and the like of the aircraft, and is an important system for ensuring the safety of take-off and landing of the aircraft.
At present, aircraft braking system generally relies on the concentrated hydraulic source of host computer, carry brake actuator through intensive long pipeline, there are hydraulic pressure spare part many, the pipeline layout is difficult and complicated, the weight is heavy, run and leak difficult problems such as, and electric brake has the motor to generate heat greatly, the redundancy configuration is difficult, maturity low scheduling problem, and self-feeding can brake equipment retrieves and utilizes the dissipated energy of aircraft braking process heavy wheel, convert aircraft wheel high-speed pivoted kinetic energy into hydraulic energy when landing, directly supply with brake actuator and use, accomplish the brake function of aircraft, how to realize extracting energy from high-speed pivoted wheel is self-feeding can brake equipment's first prerequisite.
Disclosure of Invention
In order to solve at least one of the above technical problems, the present disclosure provides a mechanical energy taking mechanism and a self-energy-feeding brake device.
In a first aspect, an embodiment of the present invention provides a mechanical energy taking mechanism, where the mechanical energy taking mechanism includes: the device comprises an accelerating gear, a gear shaft, a first reducing gear, a second reducing gear and an output shaft, wherein an external meshing accelerating gear set is formed between the accelerating gear and the gear end of the gear shaft; the first reduction gear is fixed on the shaft of the gear shaft; an external meshing reduction gear set is formed between the second reduction gear and the first reduction gear, and the second reduction gear is fixed on the output shaft.
Optionally, at least one bearing is provided on the gear shaft.
Optionally, the shaft end of the gear shaft is provided with an external thread, and the first reduction gear is fastened on the shaft of the gear shaft through a self-locking nut in a threaded connection mode.
Optionally, one end of the output shaft is provided with an external thread, the other end of the output shaft is provided with a spline, and the second reduction gear is screwed and fastened on the shaft of the output shaft through a lock nut and the external thread.
Optionally, at least one bearing is provided on the output shaft.
Optionally, a support pad is provided between the second reduction gear and at least one bearing on the output shaft.
In a second aspect, the present invention provides a self-energy-feeding braking device, which includes the mechanical energy-taking mechanism in the first aspect.
Optionally, the self-feeding brake device further comprises: the mechanical energy taking mechanism comprises an airplane wheel hub and a fastening screw, and an accelerating gear of the mechanical energy taking mechanism is fixedly connected to the airplane wheel hub through the fastening screw.
Optionally, the self-feeding brake device further comprises: the airplane wheel brake device comprises an airplane wheel brake shell, a gear shaft is arranged and positioned in the airplane wheel brake shell, a hole shoulder is arranged on the airplane wheel brake shell, and the hole shoulder on the airplane wheel brake shell corresponds to a bearing on the gear shaft.
Optionally, the self-feeding brake device further comprises: the output shaft of the airplane wheel actuator valve block is arranged and positioned in the airplane wheel actuator valve block, a hole shoulder is arranged on the airplane wheel actuator valve block, and the hole shoulder on the airplane wheel actuator valve block corresponds to the bearing on the gear shaft.
Compared with the prior art, the invention has at least the following beneficial effects:
the mechanical fetching mechanism provided by the invention has the advantages of compact structure, high power-weight ratio and high reliability, can be suitable for the fields of brake systems of any airplanes, automobiles and industrial machines, can adjust the transmission ratio and the center distance by adjusting the tooth number and the modulus of two groups of gear sets according to the space size limitation of installation occasions, and meets the requirements of output rotating speed and installation requirements.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are 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 mechanical energy-taking mechanism according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a self-energy-feeding braking device based on a mechanical energy-taking mechanism according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention, and based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a mechanical energy extraction mechanism, including: accelerating gear 1, fastening screw 2, gear shaft 3, left bearing 4, right bearing 5, first reducing gear 6, self-locking nut 7, lock nut 8, little bearing 9, supporting pad 10, second reducing gear 11, big bearing 12 and output shaft 13.
As shown in fig. 2, the mechanical energy-taking mechanism provided by the embodiment of the present invention is installed in a wheel, and an accelerating gear 1 and a wheel hub 14 are connected and fixed by a fastening screw 6 to limit axial movement. The gear shaft 3 is installed and positioned in the wheel brake housing 15 through the left bearing 4 and the right bearing 5, and the output shaft 13 is installed and positioned in the wheel actuator valve block 16 through the small bearing 9 and the large bearing 12.
Constitute external toothing acceleration gear set between the gear of accelerating gear 1 and gear shaft 3, first reduction gear 6 is spacing to be installed on gear shaft 3 through the boss, and 3 axle head excircles of gear shaft set up the external screw thread, carry out the threaded connection through self-locking nut 7 and fasten, and the hole of installing left bearing 4, right bearing 5 on the wheel brake casing 15 is provided with hole shoulder 17 for left bearing 4, right bearing 5, first reduction gear 6, gear shaft 3 are at axial fixity.
An output shaft 13 is arranged and positioned in a wheel actuator valve block 16 through a small bearing 9 and a large bearing 12, a second reduction gear 11 is arranged on the output shaft 13 in a limiting mode through a boss, and the second reduction gear 11 and the first reduction gear 6 form a group of external meshing reduction gear sets. The outer circle of the left end of the output shaft 13 is provided with an external thread, the external thread is connected and fastened through a locking nut 8 in a threaded manner, and a hole shoulder 18 is arranged in a hole for installing the small bearing 9 and the large bearing 12 on the valve block 16 of the wheel actuator, so that the small bearing 9, the supporting pad 10, the second reduction gear 11, the large bearing 12 and the output shaft 13 are axially fixed. The right end of the output shaft 13 is provided with a spline for transmitting the extracted kinetic energy of the wheel to a hydraulic pump of a terminal user, and the mechanical energy taking function of the self-feeding energy-taking brake device is realized.
It should be noted that, in the above embodiments, two bearings, i.e. the left bearing 4 and the right bearing 5, are disposed on the gear shaft, but in different embodiments, the number and size of the bearings can be adjusted according to the space size limitation of the installation place of the mechanical energy taking mechanism, the length of the gear shaft, and other factors. Similarly, in the above embodiment, two bearings, namely the small bearing 9 and the large bearing 12, are provided on the output shaft, but in different embodiments, the number and size of the bearings can be adjusted according to the space size limitation of the installation place of the mechanical energy taking mechanism, the length of the output shaft, and other factors.
Let the number of teeth of the accelerating gear 1 be Z1The number of gear teeth of the gear shaft 3 is Z2Modulus of m1The number of teeth of the first reduction gear 6 is Z3The number of teeth of the second reduction gear 11 is Z4Modulus of m2The rotating speed of the rotating shaft of the airplane wheel is naThe rotational speed of the gear shaft is nbThe rotational speed of the output shaft is ncThe gears of the accelerating gear 1 and the gear shaft 3 form an accelerating gear set, and the transmission ratio of the accelerating gear set
Center distance of
The first reduction gear 6 and the second reduction gear 11 form a reduction gear set with a transmission ratio of
Center distance of
When the landing wheel of the airplane lands on the ground, the wheel hub rotates along with the tire at a high speed, and the brake actuator valve block 16 and the brake housing 15 are relatively static and in a stationary state. The huge kinetic energy is converted into mechanical energy of the airplane wheel to form circumferential rotary motion with certain rotating speed and torque, and the rotating speed is naBecause the accelerating gear 1 is rigidly connected with the wheel hub 14 through the fastening screw 2, the accelerating gear 1 synchronously performs circumferential rotary motion, and the rotating speed is na. The rotational speed is transmitted to the gear shaft 3 via the acceleration gear set, the rotational speed of which is
The first reduction gear 6 is rigidly connected with the gear shaft 3 through a boss, belongs to the same shaft system, and meets the principle of equal rotating speed, namely the rotating speed is
The rotational speed is transmitted to the second reduction gear 11 through the reduction gear set, the rotational speed of which
The output shaft 13 is rigidly connected with the second reduction gear 11 through a boss, belongs to the same shaft system, and meets the principle of equal rotating speed, namely the rotating speed output by the output shaft
The output shaft 13 then transmits the rotational speed and torque to the hydraulic pump through a spline at the right end. In the process, the rotating speed of the airplane wheel is transmitted to the hydraulic pump of an end user through the mechanical energy taking mechanism, and the function of mechanically extracting and outputting the energy of the airplane wheel by the self-energy-feeding brake device is realized.
The mechanical energy taking gear mechanism can be suitable for various airplanes and automobile tires to take and output mechanical energy, and the center distance a of the speed increasing gear and the speed reducing gear set is adjusted according to the size of the space structure of the tire1、a2And adjusting the tooth number z of the two pairs of gears according to the use requirement, thereby realizing the output of different rotating speeds. To the design that the mechanical energy mechanism is got to completion in extremely narrow and small wheel inner space to the embodiment, the mechanical energy that has certain rotational speed and moment of torsion when landing the aircraft wheel high speed rotation draws out to provide the hydraulic pump and use, rotational speed and moment of torsion can transmit for the terminal hydraulic pump through two sets of gear sets, and the hydraulic pump converts the mechanical energy of input into hydraulic energy output, acts on for braking system actuator, realizes the braking function.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a" does not exclude the presence of other similar elements in a process, method, article, or apparatus that comprises the element.
Finally, it is to be noted that: the above description is only a preferred embodiment of the present invention, and is only used to illustrate the technical solutions of the present invention, and not to limit the protection scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. A mechanical energy extraction mechanism, characterized in that, this mechanical energy extraction mechanism includes: the device comprises an accelerating gear, a gear shaft, a first reducing gear, a second reducing gear and an output shaft, wherein an external meshing accelerating gear set is formed between the accelerating gear and the gear end of the gear shaft; the first reduction gear is fixed on the shaft of the gear shaft; an external meshing reduction gear set is formed between the second reduction gear and the first reduction gear, and the second reduction gear is fixed on the output shaft.
2. The mechanical energy extraction mechanism of claim 1, wherein at least one bearing is disposed on the gear shaft.
3. The mechanical energy taking mechanism as claimed in claim 1, wherein the shaft end of the gear shaft is provided with an external thread, and the first reduction gear is screwed and fastened on the shaft of the gear shaft through a self-locking nut.
4. The mechanical energy taking mechanism as claimed in claim 1, wherein the output shaft has an external thread at one end and a spline at the other end, and the second reduction gear is fastened to the shaft of the output shaft by being screwed to the external thread through a lock nut.
5. The mechanical energy extraction mechanism of claim 1, wherein the output shaft is provided with at least one bearing.
6. The mechanical energy extraction mechanism of claim 5, wherein a support pad is provided between the second reduction gear and at least one bearing on the output shaft.
7. A self-powered braking device, characterised in that it includes a mechanical energy pick-up mechanism as claimed in any one of claims 1 to 6.
8. The self-energizing braking device as claimed in claim 7, further comprising: the mechanical energy taking mechanism comprises an airplane wheel hub and a fastening screw, and an accelerating gear of the mechanical energy taking mechanism is fixedly connected to the airplane wheel hub through the fastening screw.
9. The self-energizing braking device as claimed in claim 7, further comprising: the airplane wheel brake device comprises an airplane wheel brake shell, a gear shaft is arranged and positioned in the airplane wheel brake shell, a hole shoulder is arranged on the airplane wheel brake shell, and the hole shoulder on the airplane wheel brake shell corresponds to a bearing on the gear shaft.
10. The self-energizing braking device as claimed in claim 7, further comprising: the output shaft of the airplane wheel actuator valve block is arranged and positioned in the airplane wheel actuator valve block, a hole shoulder is arranged on the airplane wheel actuator valve block, and the hole shoulder on the airplane wheel actuator valve block corresponds to the bearing on the gear shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110734579.4A CN113277073B (en) | 2021-06-30 | 2021-06-30 | Mechanical energy taking mechanism and self-energy-feeding brake device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110734579.4A CN113277073B (en) | 2021-06-30 | 2021-06-30 | Mechanical energy taking mechanism and self-energy-feeding brake device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113277073A true CN113277073A (en) | 2021-08-20 |
| CN113277073B CN113277073B (en) | 2023-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110734579.4A Active CN113277073B (en) | 2021-06-30 | 2021-06-30 | Mechanical energy taking mechanism and self-energy-feeding brake device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2931527A1 (en) * | 2008-05-21 | 2009-11-27 | Bosch Gmbh Robert | Self-powered braking device e.g. disk brake, for vehicle, has cam contacted with friction lining to push lining against braking surface, where drag force caused by friction of lining on braking surface is absorbed by reaction device |
| CN101786448A (en) * | 2010-03-19 | 2010-07-28 | 张坤 | Air pressure type braking energy recovery and auxiliary startup system |
| CN204605540U (en) * | 2015-03-12 | 2015-09-02 | 河北极度新能源科技有限公司 | A kind of energy-saving reduction apparatus of battery-driven car |
| CN105366040A (en) * | 2015-11-18 | 2016-03-02 | 北京航空航天大学 | Double-switch-valve-based self-powdering brake apparatus and system |
| CN109915543A (en) * | 2018-09-28 | 2019-06-21 | 唐山鼎石汽车制造有限公司 | Electric loader brake energy recycles transmission mechanism |
-
2021
- 2021-06-30 CN CN202110734579.4A patent/CN113277073B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2931527A1 (en) * | 2008-05-21 | 2009-11-27 | Bosch Gmbh Robert | Self-powered braking device e.g. disk brake, for vehicle, has cam contacted with friction lining to push lining against braking surface, where drag force caused by friction of lining on braking surface is absorbed by reaction device |
| CN101786448A (en) * | 2010-03-19 | 2010-07-28 | 张坤 | Air pressure type braking energy recovery and auxiliary startup system |
| CN204605540U (en) * | 2015-03-12 | 2015-09-02 | 河北极度新能源科技有限公司 | A kind of energy-saving reduction apparatus of battery-driven car |
| CN105366040A (en) * | 2015-11-18 | 2016-03-02 | 北京航空航天大学 | Double-switch-valve-based self-powdering brake apparatus and system |
| CN109915543A (en) * | 2018-09-28 | 2019-06-21 | 唐山鼎石汽车制造有限公司 | Electric loader brake energy recycles transmission mechanism |
Non-Patent Citations (1)
| Title |
|---|
| 刘晓超等: "飞机新原理电液自馈能刹车系统设计与优化", 《航空学报》 * |
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| CN113277073B (en) | 2023-01-20 |
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