CN112065899A

CN112065899A - Manual brake operating device

Info

Publication number: CN112065899A
Application number: CN202010722536.XA
Authority: CN
Inventors: 詹永鹏
Original assignee: Guizhou Xinan Aviation Machinery Co Ltd
Current assignee: Guizhou Xinan Aviation Machinery Co Ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2020-12-11

Abstract

The invention discloses a manual brake operating device, which transmits operating force to a brake device through a gear rack mechanism, and applies smaller operating force and operating stroke to meet the requirements of larger brake load and stroke thereof through gear rack transmission. Has the functions of dynamic braking and stop braking. The brake locking device can lock the states of shutdown brake, emergency brake and loose brake respectively, and has a misoperation prevention measure. The brake and brake release signal monitoring and warning device has the functions of monitoring and warning brake and brake release signals.

Description

Manual brake operating device

Technical Field

The invention relates to the field of brake devices, in particular to a manual brake operating device for a brake system of an aircraft cockpit.

Background

When the aircraft is used for stopping and braking, emergency braking or rotor braking, a pilot pulls the brake handle to transmit force and displacement to the brake device, so that braking is realized.

Chinese patent CN207848258U discloses a brake operating device belonging to the technical field of petroleum and natural gas, which is a turbine brake operating device and a pumping unit device, and is composed of a turbine lifter, a mounting support, an adjusting pull rod, a crank assembly and a safety knife switch, wherein the worm lifter is used to drive the adjusting pull rod to move downwards, so that locking teeth on the safety knife switch are locked with the safety gear, the locking teeth and the safety gear are prevented from lateral deviation, and the brake effect is ensured. The turbine type brake operating device and the oil pumping unit are powered by a turbine lifter, and are not suitable for manual operation of a brake system of an aircraft cockpit.

Chinese patent CN208995041U discloses a brake operating device, which belongs to the technical field of petroleum well repairing equipment. The brake operating device consists of a bearing seat, a brake shaft, a crank arm 1, a pull rod, a pin, a brake handle sleeve, a brake handle, a connecting pin and a crank arm 2, wherein an automatic locking mechanism of the brake operating device comprises a lock tongue, a square sleeve, a thrust spring, a guide sleeve, a cylinder push block, a pneumatic control valve and a stop block. The brake control device is only suitable for petroleum workover rigs and is not suitable for manual control of the aircraft cockpit brake system.

Chinese patent CN110525641A discloses a heading and brake operating device. The brake operating device consists of a left pedal assembly, a right pedal assembly, a force adjusting mechanism assembly, a yawing rotating assembly and a base assembly. This course and brake operating device only is applicable to unmanned aerial vehicle, is not suitable for aircraft cockpit braking system manual control.

The prior art of the patent can not satisfy the manual brake control requirement of the aircraft cockpit braking system: small installation space, small swing space of the operating handle, large driving force and small operating force.

Disclosure of Invention

Object of the Invention

In order to solve the problems, the invention provides a manual brake operating device, which is used for meeting the requirements of a transporter and an aircraft on stopping and braking, emergency braking or rotor braking, and meeting the requirements of larger braking load and stroke thereof by applying smaller operating force and operating stroke; in order to avoid the brake loosening caused by misoperation after the brake is stopped, the emergency brake or the rotor brake, or the brake misoperation in the running and flying processes of the transporter and the aircraft, the manual brake operating device needs to take misoperation prevention measures.

Technical solution of the invention

A manual brake operating device transmits an operating force to a brake device through a rack and pinion mechanism.

Preferably, the device comprises a rack, the rack is connected with a moving part of the force transmission mechanism, and a gear meshed with the rack is fixed at one end of the rocker arm, the other end of the rocker arm is connected with the handle, and the gear can rotate in a centering mode when the handle is pulled.

Preferably, set up slottedly on the pull rod, the rocking arm passes the groove on the pull rod, has seted up spring mounting groove on the rocking arm, and spring mounting is in spring mounting groove, and the lockpin is installed in spring mounting groove and is set up in the spring below, has still seted up waist type hole on the rocking arm, and the trigger sets up in waist type downthehole and can move about along waist type hole, and waist type hole is located spring mounting groove top, and trigger, lockpin pass two holes on the pull rod after-fixing respectively.

Preferably, the brake control device further comprises a shell, the cover plate is connected with the shell, the lower portions of the gear and the rocker arm are located in an accommodating space, which is formed by the shell and the cover plate 23 in a surrounding mode, of the top opening, the gear is rotatably connected to the shell and the cover plate through a rotating shaft, three R grooves are formed in corresponding positions of the top surfaces of the shell and the cover plate, and when the lock pin is clamped in each R groove, the control device respectively achieves brake releasing locking, brake moving locking and stop brake locking on the brake control device.

Preferably, the electric brake device further comprises an electric connector fixed on the shell and the cover plate, the electric connector is electrically connected with a micro switch located in an accommodating space defined by the shell and the cover plate, and the micro switch is used for detecting whether the manual brake operating device is in a brake state or a brake releasing state, and monitoring and alarming a brake state signal.

Preferably, the coaxially arranged screw tube and the sleeve are connected to the shell through threads, and the rack can move in the inner holes of the screw tube and the sleeve.

Preferably, the sleeve is provided with an end cap at the end.

Preferably, the gear is riveted or keyed to the rocker arm.

Preferably, the rotating radius of the rocker arm is larger than that of the gear, and the gear is a sector gear.

Preferably, the dust cover is fixed on the shell.

The invention has the advantages that: the gear rack mechanism is used for transmission, and a small operation force and an operation stroke are applied to meet the requirements of a large brake load and a stroke thereof. Has the functions of dynamic braking and stop braking. The brake locking device can lock the states of shutdown brake, emergency brake and loose brake respectively, and has a misoperation prevention measure. The brake and brake release signal monitoring and warning device has the functions of monitoring and warning brake and brake release signals.

Drawings

Fig. 1 is a structural view of a manual brake operating device of the present invention.

Fig. 2 is a sectional view a-a of fig. 1.

Fig. 3 is a sectional view B-B of fig. 2.

Fig. 4 is a three-dimensional structural view of the handle portion.

Fig. 5 is a circuit diagram of the microswitch.

Fig. 6 is a structural view of the electrical connector.

In the figure, 1-rack, 2-solenoid, 3-gear, 4-sleeve, 5-end cap, 6-electric connector, 7-rivet, 8-microswitch, 9-dust cover, 10-rocker, 11-locknut, 12-rotating shaft, 13-shell, 14-lockpin, 15-spring, 16-pull rod, 17-trigger, 18-handle, 19-screw, 20-handle, 21-nut, 22-lockpin, 23-cover plate and 24-screw.

Detailed Description

The invention is realized by the following technical scheme.

A manual brake operating device is shown in figures 1, 2 and 3 and comprises a rack 1, a solenoid 2, a gear 3, a sleeve 4, an end cover 5, an electric connector 6, a rivet 7, a micro switch 8, a dust cover 9, a rocker arm 10, a locking nut 11, a rotating shaft 12, a shell 13, a locking pin 14, a spring 15, a pull rod 16, a trigger 17, a handle 18, a screw 19, a handle 20, a nut 21, a locking pin 22, a cover plate 23 and a screw 24.

The rack 1 is connected with a moving part of the force transmission mechanism and transmits the operating force applied to the handle 18 and the handle 20 to a brake device; the solenoid 2 is fixed on the shell 13 through threaded connection, and is used for installing and positioning the transmission mechanism and positioning and guiding the rack 1; the gear 3 is riveted with the rocker arm 10 through a rivet 7 to be rigidly connected, and the operating force is transmitted to the rack 1 through gear transmission; the sleeve 4 is fixed on the shell 13 through threaded connection and used for positioning and guiding the rack, so that potential safety hazards caused by external movement of the rack 1 are avoided; the electric connector 6 is used for transmitting a signal detected by the microswitch 8; the microswitch 8 is used for detecting whether the manual brake operating device is in a brake state or a brake release state, monitoring and alarming a brake state signal, and improves the use safety. The dust cover 9 is used for preventing foreign matters from falling into the brake operating device; the screws 24 are used to fix the dust cover 9 to the housing 13; the rocker arm 10 is used for connecting the handle 18, the handle 20 and the gear 3, and the rotating radius of the rocker arm 10 is larger than that of the gear 3 so as to reduce the operating force; the locking nut 11 is used for fastening the rotating shaft 12 to avoid axial movement of the rotating shaft 12; the rotating shaft 12 is used for mounting and positioning the gear 3; the shell 13 and the cover plate 23 are used for mounting the rack 1, the solenoid 2, the sleeve 4, the electric connector 6, the microswitch 8, the dust cover 9 and the rotating shaft 12 and supporting load, and three R grooves are respectively designed on the shell 13 and the cover plate 23 and used for performing brake releasing locking, dynamic brake locking and stop brake locking on the brake operating device; as shown in fig. 4, a groove on the pull rod 16 is mounted on the rocker arm 10 corresponding to the thickness of the rocker arm 10, the lock pin 14 passes through a hole on the pull rod 16 and a spring mounting groove on the rocker arm 10 to position the pull rod 16, the lock pin 22 is screwed to axially position the lock pin 14, the pull rod 16 is rotated to expose the spring mounting groove on the rocker arm 10, the spring 15 is mounted in the spring mounting groove, and the lock pin 14 is positioned below the spring 15; reversely rotating the pull rod 16 to contain the rocker arm 10 into a groove on the pull rod 16 and positioning the spring 15; the trigger 17 passes through a kidney-shaped hole on the rocker arm 10 and a hole on the pull rod 16, the kidney-shaped hole is positioned above the spring mounting groove, and the nut 21 is used for axial positioning; the pull rod 16 and the lock pin 22 perform brake release locking, brake actuation locking and parking brake locking on the brake operating device; the pull rod 16 transmits unlocking force applied to the trigger 17 and the nut 21 by a driver to the lock pin 14, the spring 15 and the lock pin 22 to unlock; the handle 18 and the handle 20 are connected into a control handle through a screw 19.

When the brake is required, the handle 18 and the handle 20 are held, the trigger 17 and the nut 21 are lifted by fingers, the trigger 17 moves upwards along the kidney-shaped hole on the rocker arm 10, the force acting on the trigger 17 and the nut 21 is transmitted to the lock pin 14 and the lock pin 22 through the pull rod 16, and the lock pin 22 moves upwards along the spring mounting groove on the rocker arm 10 to compress the spring 15; the lock pin 14 and the lock pin 22 move upwards to be separated from the R grooves on the shell 13 and the cover plate 23, and the handle 18 and the handle 20 are pulled to rotate anticlockwise. After the locking pin 14 and the locking pin 22 are arranged in R grooves in the shell 13 and the cover plate 23, the trigger 17 and the nut 21 are released, the handle 18 and the handle 20 are pulled continuously, and the rocker arm 10 and the gear 3 rotate anticlockwise. The rack 1 rotates anticlockwise along with the gear 3 and moves rightwards, and the operating force is transmitted to the brake device through the force transmission mechanism, so that braking is realized. When the lock pin 14 and the lock pin 22 reach the brake block locking R groove on the shell 13 and the cover plate 23, the spring 15 pushes the lock pin 14 and the lock pin 22 into the R groove to realize brake block locking. When the parking brake is required to be carried out, the handle 18 and the handle 20 are held, the trigger 17 and the nut 21 are lifted by fingers, the trigger 17 moves upwards along a groove on the rocker arm 10, the force acting on the trigger 17 and the nut 21 is transmitted to the locking pin 14 and the locking pin 22 through the pull rod 16, and the locking pin 22 moves upwards along a spring mounting groove on the rocker arm 10 to compress the spring 15; the lock pin 14 and the lock pin 22 move upwards to be separated from the R grooves on the shell 13 and the cover plate 23, the handle 18 and the handle 20 are continuously pulled to rotate anticlockwise, when the lock pin 14 and the lock pin 22 reach the stop brake locking R groove on the shell 13 and the cover plate 23, the spring 15 pushes the lock pin 14 and the lock pin 22 into the R groove, and stop brake locking is achieved. When the brake needs to be released, the handle 18 and the handle 20 are held, the trigger 17 and the nut 21 are lifted by fingers, the rocker arm 10 and the gear 3 are pushed to rotate anticlockwise, the rack 1 moves leftwards along with the clockwise rotation of the gear 3, the acting force acting on the brake device is released, and the brake is released. When the rocker arm 10 rotates to a brake releasing position, the spring 15 pushes the lock pin 14 and the lock pin 22 into the R groove, and brake releasing locking is achieved. As can be seen from fig. 1, in order to actuate the braking device to perform braking, the actuating force to be applied is the product of the actuating force of the braking device and the rotating radius of the gear 3 divided by the rotating radius of the rocker arm 10, the actuating force is required to be constant, the magnitude of the actuating force is in direct proportion to the rotating radius of the gear 3 and in inverse proportion to the rotating radius of the rocker arm 10, and the larger the rotating radius of the gear 3 is, the larger the actuating force is; the larger the radius of rotation of the rocker arm 10, the smaller the required operating force. In order to drive the brake device, the rack 1 needs to move a certain distance, the rotation radian of the rocker arm 10 is related to the stroke of the rack 1 and the rotation radius of the gear 3, the ratio of the stroke of the rack 1 to the rotation radius of the gear 3 is increased along with the increase of the stroke of the rack 1 and is reduced along with the increase of the rotation radius of the gear 3. In order to reduce the operating force, according to actual requirements, the rotating radius of the rocker arm 10 is designed to be larger than that of the gear 3 on the premise of meeting the stroke requirement.

Referring to fig. 5, which is a circuit diagram of one embodiment of microswitch 8, microswitch 8 is mounted within the rotor brake operator. In the figure, N and NC are normally closed terminals, and the end C is in a braking state when being communicated with the end N (NC); n0 and N01 are normally open terminals, and the C end and the N0(N01) end are in a brake releasing state when being connected. The pin definition of one embodiment of the electrical connector 6 is shown in fig. 6. In a brake releasing state, the rocker arm 10 pushes the contact of the microswitch 8, the C end is communicated with the N0(N02) end, a brake releasing signal is sent to a helicopter control system, and the brake monitoring and warning functions are realized. When braking is needed, the rocker arm 10 is separated from a brake releasing position, the contact of the micro switch 8 returns to a normal state, the C end and the N (NC) end of the micro switch 8 are closed, a brake signal is sent to a helicopter control system, and the brake monitoring and warning functions are realized. The microswitch 8 and the electrical connector 6 can be selected as required.

TABLE 1 Pin definition of Electrical connector

Stitch pin	Color of wiring	Wire definition
				1	Red wine	Microswitch C terminal
2	Black colour	Microswitch N terminal
			3	Blue (B)	Microswitch N0 terminal
4	White colour (Bai)	Microswitch NC end
			5	Yellow colour	Microswitch N02 terminal
6		Reservation

The gear 3 and the rocker arm 10 are not limited to be rigidly connected by riveting, and the linkage of the gear I and the rocker arm 10 can also be realized by key transmission; the micro switch 8 is not limited to being activated by the rocker arm 10, and may be activated by the gear 3 and the rack 1. Any modification made on the basis of the present invention falls within the scope of the present invention.

The manual brake operating device transmits operating force to the rack through the transmission of the gear rack mechanism, drives the rack to move linearly, and transmits the operating force to the brake device. On the premise of meeting the installation space and the handle swinging space, the length of the rocker arm is increased, and the operating force can be greatly reduced; the manual brake control device is designed with brake release locking, brake moving locking and brake halt locking, so that brake release, brake moving and brake halt switching caused by misoperation is avoided, and accidents are prevented; the manual brake operating device is provided with the microswitch, so that brake state signals are monitored and alarmed, and the use safety is improved.

The above-mentioned embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the same, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention. The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.

Claims

1. A manual brake operating device is characterized in that the device transmits operating force to a brake device through a gear rack mechanism.

2. A hand brake actuator according to claim 1, characterised in that the device comprises a toothed rack (1), the toothed rack (1) being connected to the moving part of the force transmission mechanism, a toothed wheel (3) engaging with the toothed rack (1), the toothed wheel (3) being fixed to one end of a rocker arm (10), the other end of the rocker arm (10) being connected to a handle, the toothed wheel (3) being capable of rotating concentrically when the handle is pulled.

3. The hand brake operating device according to claim 2, wherein the pull rod (16) is provided with a groove, the rocker arm (10) passes through the groove on the pull rod (16), the rocker arm (10) is provided with a spring mounting groove, the spring (15) is mounted in the spring mounting groove, the lock pin is mounted in the spring mounting groove and arranged below the spring, the rocker arm (10) is further provided with a kidney-shaped hole, the trigger (17) is arranged in the kidney-shaped hole and can move up and down along the kidney-shaped hole, the kidney-shaped hole is arranged above the spring mounting groove, and the trigger (17) and the lock pin respectively pass through two holes on the pull rod (16) and then are fixed.

4. A hand brake operating device according to claim 3, further comprising a housing (13), wherein the cover plate (23) is connected to the housing (13), the lower portions of the gear (3) and the rocker arm (10) are located in a containing space surrounded by the housing (13) and the cover plate (23) and having an open top, the gear (3) is rotatably connected to the housing (13) and the cover plate (23) through the rotating shaft (12), three R grooves are formed in corresponding positions of top surfaces of the housing (13) and the cover plate (23), and when the lock pin is locked in each R groove, the operating device respectively realizes brake release locking, brake actuation locking and brake stop locking of the brake operating device.

5. A hand brake operating device according to claim 4, further comprising an electrical connector (6) fixed to the housing (13) and the cover plate (23), wherein the electrical connector (6) is electrically connected to a micro switch (8) located in a receiving space enclosed by the housing (13) and the cover plate (23), and the micro switch (8) is used for detecting whether the hand brake operating device is in a braking state or a released braking state, and monitoring and alarming a braking state signal.

6. A hand brake actuation device according to claim 4, wherein the coaxially disposed solenoid (2) and sleeve (4) are threadedly connected to the housing (13) and the rack (1) is movable within the internal bores of the solenoid (2) and sleeve (4).

7. A hand brake actuator according to claim 7, characterised in that the sleeve (4) is terminated with an end cap (5).

8. A hand brake operating device according to claim 1, characterised in that the gear wheel (3) is riveted or keyed to the rocker arm (10).

9. A hand brake actuation device according to any one of claims 1 to 8, characterised in that the swing arm (10) has a radius of rotation greater than the radius of rotation of the gear wheel (3), the gear wheel (3) being a sector gear.

10. A hand brake actuation device according to any one of claims 1 to 8, further comprising a dust cover (9) secured to the housing (13).