CN-117227994-B - Wheel holding device of aircraft tractor

CN117227994BCN 117227994 BCN117227994 BCN 117227994BCN-117227994-B

Abstract

The invention discloses a wheel holding device of an aircraft tractor, which comprises a vehicle body, a base turntable, a bearing bottom plate, a mechanical arm and a clamping push plate, wherein the base turntable is transversely arranged in an opening and is in sliding connection with the inner side surface of the opening so that the base turntable can rotate around the center of the base turntable along the circumferential direction of the opening, and when the aircraft is held tightly and the base turntable is fixed into a whole, the following of the aircraft and the tractor can be realized, and the operation and the control are simple. The bearing bottom plate, the mechanical arm and the clamping push plate are matched with each other, so that the bearing surface of the bearing bottom plate is inclined in an initial state, the rear end of the bearing bottom plate can be in contact with the lower part of the machine wheel, the bearing surface of the bearing bottom plate is horizontal to support the machine wheel in a proper position, the machine wheel is stably transited to the bearing bottom plate and lifted, the working process is stable, in addition, the lifting height of the machine wheel is determined by the height of a rotating shaft where the bearing bottom plate is turned over, and compared with the prior art, the lifting height of the machine wheel can be higher, and the application range is wider.

Inventors

TANG JIE
LIU YUHAO
LU XIN
ZHANG WEI
WANG LIWEN

Assignees

中国民航大学

Dates

Publication Date: 20260512
Application Date: 20220606

Claims (10)

1. The wheel holding device of the aircraft tractor is characterized by comprising a vehicle body, a base turntable, a bearing bottom plate, a mechanical arm and a clamping push plate; the rear end of the vehicle body is inwards recessed to form an opening, and the inner side surface of the opening is an arc surface; The base turntable is transversely arranged in the opening and is in sliding connection with the inner side surface of the opening so that the base turntable can rotate around the center of the base turntable along the circumferential direction of the opening, and the rear end of the base turntable is provided with an avoidance opening; The rear part of the bearing bottom plate is positioned at the avoidance port and hinged to the base turntable, a first hydraulic cylinder is hinged to the table top of the base turntable, the output end of the first hydraulic cylinder is connected with the bearing bottom plate to drive the bearing bottom plate to turn over, the bearing surface of the bearing bottom plate is inclined in an initial state, the rear end of the bearing bottom plate can be contacted with the lower part of the machine wheel, and the bearing surface of the bearing bottom plate is horizontal to support the machine wheel in a in-place state; The mechanical arm comprises a first connecting rod, a second connecting rod and a clamping rod which are hinged in sequence, wherein the first connecting rod is hinged to the table top of the base turntable, the mechanical arm further comprises a second hydraulic cylinder driving the first connecting rod to swing back and forth, a third hydraulic cylinder driving the second connecting rod to swing back and forth and a fourth hydraulic cylinder driving the clamping rod to rotate towards the middle, the clamping push plate is connected with the clamping rod to rotate along with the clamping rod, and the clamping push plate clamps a machine wheel with the front part of the bearing bottom plate in place.
2. The wheel holding device of an aircraft tractor according to claim 1, wherein a rotating motor is arranged on the clamping rod, and a motor shaft of the rotating motor is fixedly connected with the clamping push plate.
3. The wheel holding device of the aircraft tractor according to claim 1, wherein the bearing bottom plate sequentially comprises a shovel plate, a supporting plate and a baffle plate, wherein the shovel plate, the supporting plate and the baffle plate are formed by bending from back to front, a bending part between the shovel plate and the supporting plate is positioned at the avoidance opening and hinged to the base turntable, and the clamping push plate and the baffle plate clamp the aircraft wheel in place.
4. A wheel unit for an aircraft tractor according to claim 3, wherein the baffle is of a bent configuration.
5. The wheel holding device of an aircraft tractor according to claim 1, wherein the load bearing surface of the load bearing floor is provided with a force sensor, the clamping surface of the clamping push plate is provided with a first angle of rotation sensor, and the force sensor cooperates with the first angle of rotation sensor to detect the clamping force on the aircraft wheel and feed back to the control system of the aircraft tractor.
6. The wheel clasping device of an aircraft tractor according to claim 1, wherein the base turntable is provided with a second rotation angle sensor, and the second rotation angle sensor detects rotation angle data of the aircraft wheel when the aircraft wheel turns and feeds the rotation angle data back to a control system of the aircraft tractor.
7. An aircraft tractor wheel mounting according to claim 1, wherein one of the outer periphery of the base turntable and the inner side of the opening is provided with a projection, the other of the two is provided with a groove extending circumferentially along the opening, and the projection is slidably provided in the groove.
8. An aircraft tractor wheel mounting according to claim 7, wherein a slide base is mounted in the recess, and the projection is provided with a slide rail co-operating with the slide base.
9. An aircraft tractor wheel holding device according to claim 1, wherein the clamping surface of the clamping pusher is cambered to clamp the wheel.
10. The wheel holding apparatus of an aircraft tractor according to claim 1, wherein the clamping surface of the clamping pusher is provided with anti-skid bumps.

Description

Wheel holding device of aircraft tractor Technical Field The invention relates to the technical field of aircraft tractors, in particular to a wheel holding device of an aircraft tractor. Background Before entering the runway, the aircraft needs to slide for a long distance, and the aircraft slides by means of air reverse thrust generated by a jet engine, so that the fuel consumption is excessive, and in order to save the cost, the aircraft is usually pulled or pushed by a tractor to move. In addition, the general aircraft has no reverse gear function, so that the tractor is more important in the ground movement process of the aircraft. At present, tractors are mainly divided into a rod-type aircraft tractor and a rodless aircraft tractor according to different traction modes, and compared with a rodless aircraft tractor, the rodless aircraft tractor has the advantages of no need of matching with a traction rod, small turning radius and low running cost. The existing wheel holding device of the rodless aircraft tractor is complex in structure and serious in vibration phenomenon in the working process, so that stability is not strong, lifting height of the aircraft wheel is limited, the influence on aircraft safety is generally considered, and the aircraft wheel cannot be lifted by more than 30 cm by utilizing the existing wheel holding device, so that applicability is poor. Disclosure of Invention The invention aims to provide a wheel holding device of an aircraft tractor, which is used for solving the problems of low stability, limited lifting height and the like of the existing wheel holding device. The wheel holding device comprises a vehicle body, a base turntable, a bearing bottom plate, a mechanical arm and a clamping push plate, wherein the rear end of the vehicle body is inwards sunken to form an opening, the inner side surface of the opening is an arc surface, the base turntable is transversely arranged in the opening and is in sliding connection with the inner side surface of the opening so that the base turntable can rotate around the center of the base turntable along the circumferential direction of the opening, an avoidance opening is formed in the rear end of the base turntable, the rear part of the bearing bottom plate is positioned at the avoidance opening and is hinged to the base turntable, a first hydraulic cylinder is hinged to the table top of the base turntable, the output end of the first hydraulic cylinder is connected with the bearing bottom plate to drive the bearing bottom plate to overturn, the bearing surface of the bearing bottom plate is inclined in an initial state and the rear end of the bearing bottom plate can be contacted with the lower part of the machine wheel, the bearing bottom plate is horizontal to support the machine wheel in a state, the mechanical arm is respectively positioned at the left side and right side of the bearing bottom plate, the mechanical arm comprises a first connecting rod, a second connecting rod and a clamping rod which are sequentially hinged, the first connecting rod is hinged to the table top of the base turntable, the mechanical arm is hinged to the first connecting rod, the second connecting rod is also comprises a second connecting rod and a clamping rod which is hinged to the first connecting rod and drives the second connecting rod to the front of the clamping bottom plate to rotate in a state and the clamping bottom plate to rotate along with the first clamping bottom plate. The invention provides a wheel holding device of an aircraft tractor, which comprises a vehicle body, a base turntable, a bearing bottom plate, a mechanical arm and a clamping push plate. The base turntable is transversely arranged in the opening and is in sliding connection with the inner side face of the opening so that the base turntable can rotate around the center of the base turntable along the circumferential direction of the opening, when the aircraft wheel is held tightly and is fixed into a whole with the base turntable, the follow-up of the aircraft and the tractor can be realized, the forward and backward actions of the aircraft can be driven by the tractor, the whole turning action of the tractor is controlled by controlling the rotation of the aircraft wheel, the turning process is controlled by an aircraft driver, the manpower is saved, the operation is simple, the possibility of accidents is reduced, and the safety of the traction is ensured. The rear part of the bearing bottom plate is hinged to the base turntable at the avoidance opening, the bearing bottom plate is driven to overturn by the first hydraulic cylinder, the bearing surface of the bearing bottom plate is inclined and the rear end of the bearing bottom plate can be in contact with the lower part of the wheel, so that the friction force between the wheels and the bottom surface of the tractor is increased by using part of the mass of the airplane, the oil consumption is reduced, the ser