CN214296505U

CN214296505U - Towing pin locking device of aircraft tractor

Info

Publication number: CN214296505U
Application number: CN202120445217.9U
Authority: CN
Inventors: 黄小凡; 李洁; 宋协领
Original assignee: Chongqing Dahang Industry Co ltd
Current assignee: Chongqing Dahang Industry Co ltd
Priority date: 2021-03-01
Filing date: 2021-03-01
Publication date: 2021-09-28
Anticipated expiration: 2031-03-01

Abstract

The utility model relates to an aircraft tractor technical field, concretely relates to towing pin locking means of aircraft tractor, including fifth wheel, towing pin and actuating mechanism, actuating mechanism with the one end of towing pin is connected, the other end slidable of towing pin passes the fifth wheel, actuating mechanism is used for the drive the up-and-down motion of towing pin. The driving mechanism is used for controlling the traction pin to move up and down, so that a driver does not need to have two persons when inserting or taking out the traction pin into or from the traction rod of the tractor, and only needs to drive the tractor and control the driving mechanism; thereby saving manpower, improving efficiency and reducing the working intensity of personnel.

Description

Towing pin locking device of aircraft tractor

Technical Field

The utility model relates to an aircraft tractor technical field, concretely relates to towing pin locking means of aircraft tractor.

Background

Currently, taxiing of aircraft from taxiways to runways or aircraft landing from runways to tarmac requires the engine as a power source. When the airplane slides, a large amount of fuel oil needs to be consumed, and a large amount of carbon dioxide is discharged, so that energy is wasted, air is polluted, and fuel oil is wasted. Therefore, the taxis of the airplane between the taxiway and the parking apron are all dragged by the tractor.

The existing aircraft tractors are divided into rod tractors and rodless tractors; the towing pin of the existing rod towing vehicle needs to be manually pulled out and inserted in by a tool when in operation, so that two persons are needed to operate, namely one person is used for driving the aircraft towing vehicle, and the other person is pulled out or inserted in the aircraft towing pin, which causes the waste of personnel. The traction pin can be clamped when the traction pin is separated from the traction rod by the existing manual work, so that other tools are needed, the disassembling tool is complex, the disassembling time is long, and the efficiency is low.

Disclosure of Invention

The utility model discloses to need to drive the tractor alone and control the towing pin and lead to the extravagant problem of personnel at present when being connected aircraft tractor and aircraft with detached, provide an aircraft tractor's towing pin locking means.

In order to achieve the above purpose, the invention provides the following technical scheme:

the utility model provides an aircraft tractor's towing pin locking means, includes fifth wheel, towing pin and actuating mechanism, actuating mechanism with the one end of towing pin is connected, the other end slidable of towing pin passes the fifth wheel, actuating mechanism is used for the drive the up-and-down motion of towing pin.

Preferably, the driving mechanism comprises a rocker arm, a first connecting rod and a telescopic unit, the traction base comprises an upper base plate and a lower base plate, both the upper base plate and the lower base plate are provided with openings, and the traction pin is arranged in the openings in a sliding manner; the telescopic unit is arranged on the upper bottom plate; one end of the rocker arm is hinged with the telescopic unit, and the other end of the rocker arm is hinged with the traction pin; the upper plate is provided with a support rod, one end of the first connecting rod is hinged with the support rod, and the other end of the first connecting rod is hinged with the middle part of the rocker arm. Through the stretching out and retracting back of the telescopic unit, the connecting rod mechanism is realized through the first connecting rod, the rocker arm and the supporting rod, so that the stretching out and drawing back of the telescopic unit can be controlled only.

Preferably, the telescopic unit is a hydraulic oil cylinder or an electric screw rod, a base of the oil cylinder is installed on the traction seat, and the rocker arm is hinged to a piston of the oil cylinder. The telescopic unit can be a hydraulic oil cylinder, a traction pin is controlled in a hydraulic driving mode, or an electric screw rod mode is adopted, a sliding block with internal threads is installed on the rocker arm, and the rocker arm is lifted through the matching of the sliding block and the screw rod.

Preferably, the device further comprises a second connecting rod, and two ends of the second connecting rod are respectively hinged with the traction pin and the rocker arm. The tractor is probably the road surface can jolt at the in-process that pulls the aircraft and removes, and the towing pin can receive ascending power, in order to prevent that the towing pin from breaking away from with the traction lever on the tractor, consequently be equipped with the second connecting rod between towing pin and rocking arm, if the towing pin receives ascending power at the in-process of pulling, the one end that second connecting rod and towing pin are connected is upwards, and the position of rocking arm is motionless, and consequently the one end that second connecting rod and rocking arm are connected is downwards, just blocks to structure dead center position to deadly the towing pin card, make the towing pin can not continue upward movement.

Preferably, the hydraulic control system further comprises an electromagnetic directional valve, and a first oil inlet of the electromagnetic directional valve is connected with the hydraulic pump; the first oil outlet of the electromagnetic directional valve and the hydraulic pump are connected with an oil tank; the electromagnetic directional valve is a three-position four-way valve; and the oil inlet of the oil cylinder is connected with the second oil outlet of the electromagnetic directional valve, and the oil outlet of the oil cylinder is connected with the second oil inlet of the electromagnetic directional valve. The hydraulic oil cylinder is controlled by the three-position four-way electromagnetic directional valve, so that if the power supply of the electromagnetic directional valve is disconnected during fault, the oil cylinder is in an unloading state, and the traction pin can be pulled out and inserted in a manual mode.

Preferably, the hydraulic traction device further comprises a safety valve, two ends of the safety valve are respectively connected with the first oil inlet and the first oil outlet of the electromagnetic reversing valve, and the pressure of the oil cylinder can be adjusted through the safety valve, so that the push-pull force of the traction pin can be adjusted, and the traction device can be matched with traction devices with different sizes.

Preferably, a control end of the electromagnetic directional valve is connected with a first switch, and a second switch is further connected in series on the first switch. Install first switch and second switch in the driver's cabin, can alone realize the operation like this, in order to prevent that the driver maloperation from pressing the first switch, consequently be equipped with the second switch on control circuit, can control the solenoid directional valve only after pressing first switch and second switch simultaneously.

Compared with the prior art, the invention has the beneficial effects that: the driving mechanism is used for controlling the traction pin to move up and down, so that a driver does not need to have two persons when inserting or taking out the traction pin into or from the traction rod of the tractor, and only needs to drive the tractor and control the driving mechanism; thereby saving manpower. This application need not use other instruments with towing pin and traction lever separation, and the piece is all compared with pulling out with inserting of towing pin, has practiced thrift operating time, has improved efficiency, reduction personnel working strength.

Description of the drawings:

FIG. 1 is a schematic drawing of a kingpin pull-out configuration of the kingpin lock apparatus provided herein;

FIG. 2 is a schematic view of the structure of FIG. 1 with the kingpin inserted therein;

FIG. 3 is a schematic structural diagram of a towing pin locking device of the aircraft towing vehicle according to the present application in a towing state;

fig. 4 is a control schematic diagram of the oil cylinder.

The labels in the figure are: 1-a traction pin, 2-a traction seat, 21-an upper base plate, 22-a lower base plate, 3-a rocker arm, 4-an oil cylinder, 5-a second connecting rod, 6-a first connecting rod, 7-a supporting rod, 8-a hydraulic pump, 9-an electromagnetic directional valve, 91-a first oil inlet, 92-a first oil outlet, 93-a second oil inlet, 94-a second oil outlet, 10-a safety valve, 11-an oil tank and 12-a traction rod.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

The towing pin locking device provided by the application is suitable for a rod towing vehicle, and the towing vehicle is connected with an airplane through a towing rod 12. As shown in fig. 1, the present application provides a towing pin locking device of an aircraft towing vehicle, which comprises a towing seat 2, a towing pin 1 and a driving mechanism, wherein the driving mechanism is connected with one end of the towing pin 1, the other end of the towing pin 1 slidably passes through the towing seat 2, and the driving mechanism is used for driving the towing pin 1 to move up and down.

The driving mechanism comprises a rocker arm 3, a first connecting rod 6 and a telescopic unit, the traction base 2 comprises an upper bottom plate 21 and a lower bottom plate 22, and the upper bottom plate 21 and the lower bottom plate 22 are both connected with the tractor. The upper base plate 21 and the lower base plate 22 are both provided with holes, and the traction pin 1 is arranged in the holes in a sliding mode. The telescopic unit is mounted on the upper base plate 21; one end of the rocker arm 3 is hinged with the telescopic unit, and the other end of the rocker arm 3 is hinged with the traction pin 1; the upper base plate 21 is provided with a support rod 7, one end of the first connecting rod 6 is hinged to the support rod 7, and the other end of the first connecting rod 6 is hinged to the middle of the rocker arm 3. As shown in FIG. 1, sleeves are installed in the holes of the upper bottom plate 21 and the bottom plate, two ends of each sleeve exceed the upper bottom plate 21 and the lower bottom plate 22, the support rod 7 is L-shaped, and the support rod 7 is connected with the sleeves on the upper bottom plate 21.

The telescopic unit of this application adopts hydraulic hydro-cylinder 4, can also adopt the mode control rocking arm 3's of course of electric lead screw lift, if adopt electric lead screw then just establish the slider that has the internal thread at electric lead screw overcoat, articulate slider and rocking arm 3. For convenient control, the lifting of the rocker arm 3 is controlled by a hydraulic oil cylinder 4. In order to prevent the towing pin 1 from being separated from the towing bar 12 after being stressed, a second connecting rod 5 is arranged between the towing pin 1 and the rocker arm 3, and two ends of the second connecting rod 5 are respectively hinged with the towing pin 1 and the rocker arm 3. If the towing pin 1 is forced upwards in the towing process, the end of the second connecting rod 5 connected with the towing pin 1 is upwards, and the rocker arm 3 is not moved, so that the included angle between the second connecting rod 5 and the rocker arm 3 becomes smaller and is locked, and the towing pin 1 cannot move upwards continuously, as shown in fig. 3.

This application is controlled hydro-cylinder 4 through solenoid directional valve 9, through switch control solenoid directional valve 9 get electric and lose the electricity, with the switch mounting in the driver's cabin, make things convenient for the driver to move tractor while control switch, in order to prevent driver's maloperation, at home indoor location first switch and second switch, first switch and second switch are established ties, only first switch and second switch press simultaneously like this and just can operate solenoid directional valve 9.

A first oil inlet 91 of the electromagnetic directional valve 9 is connected with the hydraulic pump 8; the first oil outlet 92 of the electromagnetic directional valve 9 and the hydraulic pump 8 are both connected with the oil tank 11; an oil inlet of the oil cylinder 4 is connected with a second oil outlet 94 of the electromagnetic directional valve 9, and an oil outlet of the oil cylinder 4 is connected with a second oil inlet 93 of the electromagnetic directional valve 9. In order to prevent the control circuit of the electromagnetic directional valve 9 from being broken down, the electromagnetic directional valve 9 of the present application employs a three-position four-way valve, when the control circuit of the electromagnetic directional valve 9 is broken down, the power supply of the electromagnetic directional valve 9 is cut off, the oil in the oil cylinder 4 flows back to the oil tank 11, the oil cylinder 4 is in an unloading state, and the traction pin 1 can still be pulled out and inserted in by a manual mode. In order to adjust the pressure of the oil cylinder 4 conveniently, a safety valve 10 is connected between the first oil inlet 91 and the first oil outlet 92 of the electromagnetic directional valve 9. The top of the towing pin 1 is provided with a bracelet, so that the hand-operated hand-held device is convenient to hold.

The working process is as follows: when the traction rod 12 needs to be connected with the traction pin 1, the electromagnetic directional valve 9 is controlled, so that the oil cylinder 4 is retracted, and the rocker arm 3 moves the traction pin 1 upwards as shown in figure 1. The tow bar 12 is extended under the tow pin 1 and then the solenoid directional valve 9 is opened so that the cylinder 4 is extended and the tow pin 1 passes through the tow bar 12 as shown in fig. 2.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides an aircraft tractor's towing pin locking means, its characterized in that includes fifth wheel (2), towing pin (1) and actuating mechanism, actuating mechanism with the one end of towing pin (1) is connected, the other end slidable of towing pin (1) passes fifth wheel (2), actuating mechanism is used for the drive towing pin (1) up-and-down motion.

2. The tow pin locking device of an aircraft tractor according to claim 1, characterized in that the driving mechanism comprises a rocker arm (3), a first connecting rod (6) and a telescopic unit, the tow seat (2) comprises an upper base plate (21) and a lower base plate (22), both the upper base plate (21) and the lower base plate (22) are provided with an opening, and the tow pin (1) is slidably arranged in the opening; the telescopic unit is arranged on the upper bottom plate (21); one end of the rocker arm (3) is hinged with the telescopic unit, and the other end of the rocker arm (3) is hinged with the traction pin (1); the upper base plate (21) is provided with a support rod (7), one end of the first connecting rod (6) is hinged to the support rod (7), and the other end of the first connecting rod (6) is hinged to the middle of the rocker arm (3).

3. The tow pin locking arrangement of an aircraft tractor according to claim 2, characterised in that the telescopic unit is a hydraulic cylinder (4), the base of the cylinder (4) being mounted on the tow seat (2), the rocker arm (3) being hinged to the piston of the cylinder (4).

4. The tow pin locking arrangement of an aircraft tractor according to claim 2, characterized in that it further comprises a second link (5), the two ends of the second link (5) being hinged to the tow pin (1) and the rocker arm (3), respectively.

5. The tow pin locking device of an aircraft tractor according to claim 3, characterized by further comprising an electromagnetic directional valve (9), wherein a first oil inlet (91) of the electromagnetic directional valve (9) is connected with the hydraulic pump (8); the first oil outlet (92) of the electromagnetic directional valve (9) and the hydraulic pumps (8) are connected with an oil tank (11); the electromagnetic directional valve (9) is a three-position four-way valve; an oil inlet of the oil cylinder (4) is connected with a second oil outlet (94) of the electromagnetic directional valve (9), and an oil outlet of the oil cylinder (4) is connected with a second oil inlet (93) of the electromagnetic directional valve (9).

6. The tow pin locking device of an aircraft tractor according to claim 5, characterized in that a safety valve (10) is further included, and both ends of the safety valve (10) are respectively connected with the first oil inlet (91) and the first oil outlet (92) of the electromagnetic directional valve (9).

7. The tow pin locking device of an aircraft tractor according to claim 5, characterized in that the control end of the electromagnetic directional valve (9) is connected with a first switch, and a second switch is connected in series with the first switch.