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CN110588603A - Operating handle mechanism of brake distribution valve for aircraft brake - Google Patents

Operating handle mechanism of brake distribution valve for aircraft brake Download PDF

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Publication number
CN110588603A
CN110588603A CN201910814677.1A CN201910814677A CN110588603A CN 110588603 A CN110588603 A CN 110588603A CN 201910814677 A CN201910814677 A CN 201910814677A CN 110588603 A CN110588603 A CN 110588603A
Authority
CN
China
Prior art keywords
handle
distribution valve
brake
shaft
operating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910814677.1A
Other languages
Chinese (zh)
Inventor
陈慧
鞠洪福
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guizhou Xinan Aviation Machinery Co Ltd
Original Assignee
Guizhou Xinan Aviation Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guizhou Xinan Aviation Machinery Co Ltd filed Critical Guizhou Xinan Aviation Machinery Co Ltd
Priority to CN201910814677.1A priority Critical patent/CN110588603A/en
Publication of CN110588603A publication Critical patent/CN110588603A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T7/00Brake-action initiating means
    • B60T7/02Brake-action initiating means for personal initiation
    • B60T7/08Brake-action initiating means for personal initiation hand actuated
    • B60T7/10Disposition of hand control

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

The invention discloses an operating handle mechanism of a brake distribution valve for an aircraft brake, which is an eccentric wheel mechanism, wherein an eccentric hole is arranged on a handle shaft, a mandrel is arranged in the eccentric hole, when the starting end of the handle rotates in a counterclockwise direction around the central point of the handle shaft by an L1 stroke, the handle shaft is driven to rotate, a mandril is driven to move by a stroke L2 along with the continuous increase of the curvature radius R1 of the handle shaft relative to the central point of the mandrel, and the mandril pushes a piston in the brake distribution valve to enable the piston to generate brake pressure. The operating handle mechanism can directly connect the operating pull rod to the operating handle, thereby reducing the operating switching mechanism, saving the cost, being convenient to install and disassemble and leading the product to have good maintainability.

Description

Operating handle mechanism of brake distribution valve for aircraft brake
Technical Field
The invention belongs to the field of helicopter wheel braking systems, and particularly relates to a brake distribution valve operating handle mechanism for an airplane brake.
Background
When the original aircraft brake system is used for stopping and braking, the operating lever of the brake distribution valve is operated to stop and brake, the operating lever mechanism is a lever mechanism and is connected with the operating line system through a conversion bracket, an operation conversion mechanism is required when the control lever mechanism is installed on an aircraft, the operation conversion mechanism is large in size (see figure 1), and the occupied space on the aircraft is large and the operation is complex. According to the use experience of other helicopters, once a product fails, the assembly and disassembly are difficult, and the maintainability is poor.
Disclosure of Invention
Object of the Invention
In order to solve the technical problems of large occupied space and complex operation when the original aircraft brake system is installed on an aircraft, the invention adopts the control handle mechanism, and the control wire system can be directly connected with the handle, so the operation is simple and convenient, the conversion links are reduced, and the occupied space is small.
Technical solution of the invention
In order to achieve the purpose, the invention adopts the following technical scheme:
the operating handle mechanism of the brake distribution valve for the aircraft brake is an eccentric wheel mechanism, an eccentric hole is formed in a handle shaft, a mandrel is installed in the eccentric hole, when the starting end of the handle rotates in the anticlockwise direction around the central point of the handle shaft by an L1 stroke, the handle shaft is driven to rotate, the ejector rod is driven to move by a stroke L2 along with the continuous increase of the curvature radius R1 of the central point of the handle shaft relative to the mandrel, and the ejector rod pushes a piston in the brake distribution valve to enable the piston to generate brake pressure.
Preferably, the handle is keyed to the handle shaft.
Preferably, a pair of needle bearings is provided between the spindle and the handle shaft.
Preferably, still include the handle casing, handle axle and dabber set up in the handle casing, and the handle sets up in handle casing one side.
Preferably, a pair of drawn cup needle bearings are provided between the handle shaft and the handle housing.
Preferably, the stem extends into the handle housing and through a radial bore in the handle shaft and spindle.
Preferably, there are two rams, the axis of which is perpendicular to the axis of the mandrel.
Preferably, gaps are arranged between the handle shaft and the hole on the mandrel and the mandril.
Preferably, the outer peripheral surface of one end of the handle shaft extending out of the handle is provided with a locking washer for preventing the handle shaft from falling off.
Preferably, an adjustment washer is provided between the end of the handle and the lock washer.
THE ADVANTAGES OF THE PRESENT INVENTION
The invention has the advantages that:
(1) reduction of manipulation switching mechanisms: the control handle is changed into an eccentric wheel structure from the original lever type control mechanism, and the control handle is designed on the side surface of the shell, so that the control pull rod can be directly connected to the control handle, the control conversion mechanism can be reduced, the cost is saved, the installation and the disassembly are convenient, and the product has good maintainability.
(2) Reducing the manual operating force: in order to meet the requirement of large-stroke rotation of the operating handle provided by a host machine, the operating handle adopts an eccentric wheel structure, and two pairs of bearings are added between two friction pairs in the eccentric wheel, so that the manual operating force is reduced from the original 160N to 60N.
Drawings
FIG. 1 is an external view of a modified front steering handle mechanism.
FIG. 2 is a side view of the operating handle mechanism of the brake distribution valve for an aircraft brake of the present invention.
Fig. 3 is a sectional view taken along line a-a of fig. 2.
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2
FIG. 5 is a schematic diagram of the operating handle mechanism of the brake distribution valve for an aircraft brake of the present invention.
In the figure: 1-handle shell, 2-handle, 3-lock washer, 4-adjusting washer, 5-handle shaft, 6-core shaft, 7-ejector rod, 8-drawn cup needle roller bearing, 9-needle roller bearing, 10-key.
Detailed Description
The detailed description of the embodiments of the present invention is provided in conjunction with the summary of the invention and the accompanying drawings.
The operating handle mechanism of the brake distribution valve for the aircraft brake is an eccentric wheel mechanism and comprises a handle shell 1, a handle 2, a locking washer 3, an adjusting washer 4, a handle shaft 5, a mandrel 6, an ejector rod 7, a drawn outer ring needle bearing 8, a needle bearing 9 and a key 10. Handle shaft 5 and dabber 6 set up in handle casing 1, and handle 2 sets up in handle casing 1 one side, and handle 2 passes through the key-type connection with handle shaft 5. Two push rods 7 extend into the handle shell and penetrate through radial holes of the handle shaft 5 and the mandrel 6, and the axis of each push rod 7 is perpendicular to the axis of the mandrel 6. Gaps are arranged between the holes on the handle shaft 5 and the core shaft 6 and the mandril 7. The outer peripheral surface of one end of the handle shaft 5 extending out of the handle 2 is provided with a locking washer 3 for preventing the handle shaft 5 from being disengaged. An adjusting washer 4 is arranged between the end part of the handle 2 and the locking washer 3. A pair of drawn cup needle roller bearings 8 are arranged between the handle shaft 5 and the handle housing 1, and a pair of needle roller bearings 9 are arranged between the mandrel 6 and the handle shaft 5, so that the hand operating force is reduced from the original 160N to 60N. The handle shaft 5 is provided with an eccentric hole, the mandrel 6 is arranged in the eccentric hole, when the starting end A of the handle 2 rotates in the anticlockwise direction around the central point O of the handle shaft by an L1 stroke, the handle shaft 5 is driven to rotate, the ejector rod 7 is driven to move by a stroke L2 along with the continuous increase of the curvature radius R1 of the handle shaft 5 relative to the central point O1 of the mandrel 6, and the ejector rod 7 pushes a piston in a brake distribution valve to enable the piston to generate brake pressure. The large-range rotary motion of the operating handle is changed into the linear motion of the small stroke of the mandril. In order to provide the traditional braking feeling for the pilot, the pilot needs to have a force feeling (but not a large force) and a displacement feeling during braking. When the helicopter is stopped and braked, the control handle is pulled, the brake distribution valve generates hydraulic pressure in direct proportion to the displacement of the control handle, and the hydraulic pressure is input into the airplane wheel brake device to brake. Therefore, the pilot can ensure that the operating force of the operating handle meets the requirement of ergonomics (not very large), and the stroke of the operating handle is in a certain proportion to that of the ejector rod 7.

Claims (10)

1. Aircraft brake is with operating handle mechanism of brake distribution valve, its characterized in that: the operating handle mechanism is an eccentric wheel mechanism, an eccentric hole is formed in a handle shaft (5), a mandrel (6) is installed in the eccentric hole, when the starting end of a handle (2) rotates for L1 stroke around the central point of the handle shaft in the anticlockwise direction, the handle shaft (5) is driven to rotate, the ejector rod (7) is driven to move for the stroke L2 along with the continuous increase of the curvature radius R1 of the central point of the handle shaft (5) relative to the mandrel (6), and the ejector rod (7) pushes a piston in a brake distribution valve to enable the piston to generate brake pressure.
2. The operating handle mechanism of a brake distribution valve for aircraft brakes of claim 1, wherein: the handle (2) is connected with the handle shaft (5) through a key.
3. The operating handle mechanism of a brake distribution valve for aircraft brakes of claim 1, wherein: a pair of needle bearings (9) is arranged between the mandrel (6) and the handle shaft (5).
4. The operating handle mechanism of a brake distribution valve for aircraft brakes of claim 1, wherein: the handle is characterized by further comprising a handle shell (1), a handle shaft (5) and a mandrel (6) are arranged in the handle shell (1), and the handle (2) is arranged on one side of the handle shell (1).
5. The operating handle mechanism of a brake distribution valve for aircraft brakes of claim 3, wherein: a pair of drawn cup needle roller bearings (8) is provided between the handle shaft (5) and the handle housing (1).
6. The operating handle mechanism of the brake distribution valve for aircraft brakes of claim 4, wherein: the mandril (7) extends into the handle shell and passes through the radial holes of the handle shaft (5) and the mandrel (6).
7. The operating handle mechanism of the brake distribution valve for aircraft brakes of claim 4, wherein: two ejector rods (7) are arranged, and the axes of the ejector rods (7) are vertical to the axis of the mandrel (6).
8. The operating handle mechanism of a brake distribution valve for aircraft brakes of claim 6, wherein: gaps are arranged between the holes on the handle shaft (5) and the core shaft (6) and the mandril (7).
9. The operating handle mechanism of the brake distribution valve for aircraft brakes of claim 4, wherein: the outer peripheral surface of one end of the handle shaft (5) extending out of the handle (2) is provided with a locking washer (3) for preventing the handle shaft (5) from falling off.
10. The operating handle mechanism of the brake distribution valve for aircraft brakes of claim 9, wherein: an adjusting washer (4) is arranged between the end part of the handle (2) and the locking washer (3).
CN201910814677.1A 2019-08-30 2019-08-30 Operating handle mechanism of brake distribution valve for aircraft brake Pending CN110588603A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910814677.1A CN110588603A (en) 2019-08-30 2019-08-30 Operating handle mechanism of brake distribution valve for aircraft brake

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910814677.1A CN110588603A (en) 2019-08-30 2019-08-30 Operating handle mechanism of brake distribution valve for aircraft brake

Publications (1)

Publication Number Publication Date
CN110588603A true CN110588603A (en) 2019-12-20

Family

ID=68856761

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910814677.1A Pending CN110588603A (en) 2019-08-30 2019-08-30 Operating handle mechanism of brake distribution valve for aircraft brake

Country Status (1)

Country Link
CN (1) CN110588603A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111996523A (en) * 2020-07-15 2020-11-27 国营芜湖机械厂 Deformation-preventing repair method for thin-wall shell of aircraft control handle
CN114735205A (en) * 2022-04-25 2022-07-12 贵州新安航空机械有限责任公司 Eccentric cam type operating handle mechanism

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB481946A (en) * 1936-09-21 1938-03-21 Bendix Ltd Improvements in or relating to the control of aircraft brakes
US6505714B1 (en) * 1998-10-24 2003-01-14 Meritor Heavy Vehicle Systems, Llc Parking-braking in vehicles
CN1579855A (en) * 2003-12-05 2005-02-16 桐乡市亚力实业公司 Disk type brake with parking brake mechanism
CN2921436Y (en) * 2006-06-13 2007-07-11 万安集团有限公司 Vehicle rear-wheels hydraulic running braking and mechanical parking braking float disc braker
CN103332179A (en) * 2013-06-26 2013-10-02 安徽江淮汽车股份有限公司 Unlocking mechanism for parking manual-control valve
CN203358352U (en) * 2013-06-27 2013-12-25 唐山铁通运力设备有限公司 Walking and braking integrated control handle for railroad hauling car
KR101524097B1 (en) * 2013-12-27 2015-06-01 동명대학교산학협력단 Method for manufacturing valve assembly for parking brake switch
CN211139292U (en) * 2019-08-30 2020-07-31 贵州新安航空机械有限责任公司 Operating handle mechanism of brake distribution valve for aircraft brake
CN214240754U (en) * 2020-12-25 2021-09-21 郑州日产汽车有限公司 Parking control mechanism
CN216269734U (en) * 2021-11-19 2022-04-12 良豪科技(惠州)有限公司 Hydraulic brake mechanism

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB481946A (en) * 1936-09-21 1938-03-21 Bendix Ltd Improvements in or relating to the control of aircraft brakes
US6505714B1 (en) * 1998-10-24 2003-01-14 Meritor Heavy Vehicle Systems, Llc Parking-braking in vehicles
CN1579855A (en) * 2003-12-05 2005-02-16 桐乡市亚力实业公司 Disk type brake with parking brake mechanism
CN2921436Y (en) * 2006-06-13 2007-07-11 万安集团有限公司 Vehicle rear-wheels hydraulic running braking and mechanical parking braking float disc braker
CN103332179A (en) * 2013-06-26 2013-10-02 安徽江淮汽车股份有限公司 Unlocking mechanism for parking manual-control valve
CN203358352U (en) * 2013-06-27 2013-12-25 唐山铁通运力设备有限公司 Walking and braking integrated control handle for railroad hauling car
KR101524097B1 (en) * 2013-12-27 2015-06-01 동명대학교산학협력단 Method for manufacturing valve assembly for parking brake switch
CN211139292U (en) * 2019-08-30 2020-07-31 贵州新安航空机械有限责任公司 Operating handle mechanism of brake distribution valve for aircraft brake
CN214240754U (en) * 2020-12-25 2021-09-21 郑州日产汽车有限公司 Parking control mechanism
CN216269734U (en) * 2021-11-19 2022-04-12 良豪科技(惠州)有限公司 Hydraulic brake mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111996523A (en) * 2020-07-15 2020-11-27 国营芜湖机械厂 Deformation-preventing repair method for thin-wall shell of aircraft control handle
CN114735205A (en) * 2022-04-25 2022-07-12 贵州新安航空机械有限责任公司 Eccentric cam type operating handle mechanism

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