Hydraulic steering device of aircraft tractor

Abstract

The utility model discloses a hydraulic steering device of an aircraft tractor, which relates to the technical field of hydraulic steering devices and comprises a fixing support, an assembly connecting frame is arranged on the outer side of the fixing support, and a stabilizing device is fixed on the outer side of the fixing support. The device is provided with a hydraulic steering mechanism, the angles of a rotating mounting frame and a second tire mounting frame can be adjusted, hydraulic steering of the aircraft tractor is conveniently completed, and therefore the stable hydraulic steering device is achieved, the requirements of the aircraft tractor in different scenes can be met, and the safety and maneuverability of the aircraft tractor are improved; the device is provided with the stabilizing device, after the corresponding face of the supporting stabilizing plate is attached to the corresponding installation portion of the outer side of the fixing support, the damper is a device used for reducing vibration and power loads, and by consuming or converting vibration energy, impact borne by a structure or a mechanical system is reduced, and the service life of the damper is prolonged. The stability of the connecting part after the fixing support is installed can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic steering device technical field, concretely is a kind of aircraft tractor hydraulic steering device. BACKGROUND

[0002] Rod type tractor is a kind of special traction rod matched with aircraft and connected with aircraft, and it is a special vehicle for aircraft traction operation, and aircraft traction rod is a special rod with buffer device and torsional shear device in the middle, which has the function of transmitting power and reducing the impact of tractor on aircraft. Aircraft tractor is a support equipment for towing aircraft on the ground of airport, and it can also be used to move aircraft components or aircraft during aircraft manufacturing process. During aircraft assembly process, considering energy and environmental protection, electric motor power system without waste gas emission and low noise is usually used.

[0003] Chinese patent discloses aircraft tractor electric control steering device (authorized announcement number CN 101700771 B), and the patent technology is provided with steering column and steering wheel fixed on steering column, encoder and brake are installed on steering column, controller is used to collect signal and output signal, angle sensor is installed on steering bridge, steering wheel inputs analog signal to controller through encoder, controller sends steering electric signal to electromagnetic valve for controlling steering according to obtained analog signal instruction, electromagnetic valve controls steering hydraulic cylinder after receiving electric signal, steering hydraulic cylinder pushes steering bridge to act, and steering angle of steering bridge is controlled. Angle sensor installed on steering bridge converts collected actual steering angle of steering bridge into electric signal, and simultaneously inputs electric signal to brake through controller, and brake generates corresponding proportional brake torque according to obtained electric signal.

[0004] However, the above-mentioned electric control steering device needs to be used with steering hydraulic cylinder during use, and the existing hydraulic steering device is inconvenient to use, which affects the steering effect. Therefore, the aircraft tractor hydraulic steering device is provided by the person skilled in the art to solve the problems in the above background technology. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of aircraft tractor hydraulic steering device to solve the problems in prior art.

[0006] An aircraft tractor hydraulic steering device, comprising a fixed support, a fitting connecting frame is arranged on the outer side of the fixed support, a stabilizing device is fixed on the outer side of the fixed support, a first mounting frame is fixed on one side of the fixed support, a first tire mounting frame is fixed on the end of the first mounting frame away from the fixed support, a second mounting frame is fixed on the side of the fixed support away from the first mounting frame, a hydraulic steering mechanism is arranged on the top of the second mounting frame, and a second tire mounting frame is connected to the outer side of the hydraulic steering mechanism.

[0007] The hydraulic steering mechanism comprises a cast iron support, a steering hydraulic cylinder is rotatably connected to the outer side of the cast iron support through a rotating shaft, a rotating connecting head is fixed to one end of the output shaft of the steering hydraulic cylinder, a rotating mounting frame is rotatably connected to the outer side of the rotating connecting head, a steering connecting head is fixed to the outer side of the rotating mounting frame, and a bottom support is fixed to the bottom of the steering connecting head.

[0008] As a further scheme of the utility model: the outer side of the bottom support is rotatably connected with a steering mounting head through a rotating shaft, the outer side of the steering mounting head is fixed with a steering transmission rod, the outer side of the steering hydraulic cylinder is fixed with a protective shell, the cast iron support and the fixed support are fixedly connected, and the rotating mounting frame and the second mounting frame are rotatably connected.

[0009] As a further scheme of the utility model: the outer side of the first tire mounting frame is fitted with a rotating frame, and the rotating frame is connected with one end of the steering transmission rod.

[0010] As a further scheme of the utility model: the stabilizing device comprises a fixed shell, a supporting spring is fixed to the inner wall of one side of the fixed shell, an installation connecting pad is arranged at one end of the supporting spring, a supporting stabilizing plate is fixed to one end of the supporting stabilizing plate, guide stabilizing blocks are fixed to the two ends of the installation connecting pad, a damper is arranged on the inner wall of one side of the fixed shell, a limiting sleeve is fixed to the inner wall of one side of the fixed shell, and a limiting block is fixed to the side of the installation connecting pad close to the supporting spring.

[0011] As a further scheme of the utility model: the fixed shell and the fixed support are fixedly connected, and the damper is fixedly connected between one end and the installation connecting pad.

[0012] As a further scheme of the utility model: a through hole is formed in the fixed shell, and the size of the through hole is matched with the size of the supporting stabilizing plate.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1、The device is provided with a hydraulic steering mechanism, which can adjust the angle of the rotating mounting frame and the second tire mounting frame, and conveniently complete the hydraulic steering of the aircraft tractor, so that a stable hydraulic steering device is realized, which can meet the needs of the aircraft tractor in different scenes and improve the safety and maneuverability of the aircraft tractor;

[0015] 2、The device is provided with a stabilizing device, when the fixed support and the assembly connecting frame are installed in the corresponding position of the aircraft tractor, the corresponding surface of the supporting stabilizing plate and the corresponding mounting part outside the fixed support are attached, and the damper is a device for reducing vibration and dynamic load, which reduces the impact on the structure or mechanical system by consuming or converting the energy of vibration, so as to improve the stability of the connecting part after the installation of the fixed support. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a perspective view of the hydraulic steering device of the aircraft tractor of the utility model;

[0017] Figure 2 It is a hydraulic steering mechanism structure schematic view of the hydraulic steering device of the aircraft tractor of the utility model;

[0018] Figure 3 It is a steering cylinder structure schematic view of the hydraulic steering device of the aircraft tractor of the utility model;

[0019] Figure 4 It is a stabilizing device structure schematic view of the hydraulic steering device of the aircraft tractor of the utility model.

[0020] Reference numerals in the drawing: 1, fixed support; 2, assembly connecting frame; 3, first mounting frame; 4, first tire mounting frame; 5, second mounting frame; 6, hydraulic steering mechanism; 61, cast iron support; 62, steering cylinder; 63, rotating connecting head; 64, rotating mounting frame; 65, steering connecting head; 66, bottom support; 67, steering mounting head; 68, steering transmission rod; 69, protective shell; 7, second tire mounting frame; 8, stabilizing device; 81, fixed shell; 82, supporting spring; 83, mounting connecting pad; 84, supporting stabilizing plate; 85, guiding stabilizing block; 87, damper; 88, limiting block; 89, limiting sleeve. DETAILED DESCRIPTION

[0021] Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0022] Please refer to Figures 1-3The utility model provides a hydraulic steering device for an aircraft tractor, comprising a fixed bracket 1, an assembly connecting bracket 2 being provided on the outer side of the fixed bracket 1, a stabilizing device 8 being fixed on the outer side of the fixed bracket 1, a first mounting bracket 3 being fixed on one side of the fixed bracket 1, a first tire mounting bracket 4 being fixed on an end of the first mounting bracket 3 away from the fixed bracket 1, a second mounting bracket 5 being fixed on a side of the fixed bracket 1 away from the first mounting bracket 3, a hydraulic steering mechanism 6 being provided on the top of the second mounting bracket 5, and a second tire mounting bracket 7 being connected to the outer side of the hydraulic steering mechanism 6;

[0023] The hydraulic steering mechanism 6 includes a cast iron bracket 61, the outer side of the cast iron bracket 61 is rotatably connected to the steering cylinder 62 via a rotating shaft, one end of the output shaft of the steering cylinder 62 is fixed with a rotating connector 63, the outer side of the rotating connector 63 is rotatably connected to a rotating mounting frame 64, the cast iron bracket 61 and the fixed bracket 1 are fixedly connected, the rotating mounting frame 64 is rotatably connected to the second mounting frame 5, the outer side of the rotating mounting frame 64 is fixed with a steering connector 65, the bottom of the steering connector 65 is fixed with a bottom bracket 66, the outer side of the bottom bracket 66 is rotatably connected to a steering mounting head 67 via a rotating shaft, the outer side of the steering mounting head 67 is fixed with a steering transmission rod 68, the outer side of the steering cylinder 62 is fixed with a protective shell 69, the outer side of the first tire mounting frame 4 is cooperated with a rotating frame, and the rotating frame is cooperated with one end of the steering transmission rod 68.

[0024] During use, when the device is performing hydraulic steering of the aircraft tractor, the steering cylinder is mainly composed of a pump, a valve, a cylinder body, a fuel tank, a pipeline, etc. The pump is responsible for converting the power input into hydraulic energy to drive the hydraulic cylinder body to move; the valve controls the hydraulic flow direction and adjusts the hydraulic pressure; the fuel tank stores hydraulic oil; the pipeline connects various components and transmits hydraulic oil. When the steering cylinder controls the steering, one side of the rotating mounting frame is moved by the output shaft of the steering cylinder. At this time, the rotating mounting frame and the second mounting frame are rotatably connected, and the angles of the rotating mounting frame and the second tire mounting frame can be adjusted. After adjustment, the bottom bracket is driven to rotate at the same time by the rotating mounting frame. The steering mounting head on the outside of the bottom bracket can drive the steering transmission rod angle adjustment, and the other end of the steering transmission rod drives the first tire mounting frame to rotate, thereby conveniently completing the hydraulic steering of the aircraft tractor, thereby realizing a stable hydraulic steering device, which can meet the needs of aircraft tractors in different scenarios.

[0025] See also Figure 1 and Figure 4The utility model provides a kind of airplane tractor hydraulic steering gear, stabilizing device 8 includes fixed shell 81, the inner wall of one side of fixed shell 81 is fixed with support spring 82, one end of support spring 82 is provided with installation connecting pad 83, the side of installation connecting pad 83 is fixed with support and pay special attention to 84, the inside of fixed shell 81 is equipped with through-hole, and the size of the through-hole is adapted to the size of support and pay special attention to 84, one end of support and pay special attention to 84 is fixed with support stabilizing plate 85, the both ends of installation connecting pad 83 are fixed with guide stabilizing block 86, the inner wall of one side of fixed shell 81 is provided with damper 87, fixed shell 81 and fixed support 1 are fixedly connected between, the one end of damper 87 and installation connecting pad 83 are fixedly connected, the inner wall of one side of fixed shell 81 is fixed with limit sleeve 89, the side of installation connecting pad 83 close to support spring 82 is fixed with limit block 88.

[0026] The device is used in the process, when fixed support and assembly connecting frame are installed in the corresponding position of airplane tractor, fixed shell is fixed on the outside of fixed support, the elastic force of support spring in fixed shell is provided to push installation connecting pad, let support and pay special attention to the outside of installation connecting pad support stabilizing plate stable support, guide stabilizing block plays the role of auxiliary guide, while the corresponding surface of support stabilizing plate and the outside of fixed support corresponding installation part are pasted, damper is a kind of device for reducing vibration and power load, it reduces the impact that structure or mechanical system receives by consuming or converting the energy of vibration.

[0027] Finally, it should be noted that: the above described only for the preferred embodiment of the utility model, and is not used to limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. An aircraft tractor hydraulic steering device comprising a fixed bracket (1), characterized in that, The outer side of the fixed support (1) is provided with an assembly connecting frame (2), the outer side of the fixed support (1) is fixedly provided with a stabilizing device (8), one side of the fixed support (1) is fixedly provided with a first mounting frame (3), one end of the first mounting frame (3) away from the fixed support (1) is fixedly provided with a first tire mounting frame (4), one side of the fixed support (1) away from the first mounting frame (3) is fixedly provided with a second mounting frame (5), the top of the second mounting frame (5) is provided with a hydraulic steering mechanism (6), and the outer side of the hydraulic steering mechanism (6) is connected with a second tire mounting frame (7). The hydraulic steering mechanism (6) comprises a cast iron support (61), a steering hydraulic cylinder (62) is rotatably connected to the outer side of the cast iron support (61) through a rotating shaft, a rotating connecting head (63) is fixed to one end of the output shaft of the steering hydraulic cylinder (62), a rotating mounting frame (64) is rotatably connected to the outer side of the rotating connecting head (63), a steering connecting head (65) is fixed to the outer side of the rotating mounting frame (64), and a bottom support (66) is fixed to the bottom of the steering connecting head (65).

2. An aircraft tug hydraulic steering apparatus as claimed in claim 1, wherein, The outer side of the bottom support (66) is rotatably connected with a steering mounting head (67) through a rotating shaft, the outer side of the steering mounting head (67) is fixed with a steering transmission rod (68), the outer side of the steering hydraulic cylinder (62) is fixed with a protective shell (69), the cast iron support (61) and the fixed support (1) are fixedly connected, and the rotating mounting frame (64) and the second mounting frame (5) are rotatably connected.

3. An aircraft tug hydraulic steering unit according to claim 2, wherein, The outer side of the first tire mounting frame (4) is fitted with a rotating frame, and the rotating frame is connected with one end of the steering transmission rod (68).

4. An aircraft tug hydraulic steering unit as claimed in claim 1, wherein, The stabilizing device (8) comprises a fixed shell (81), a supporting spring (82) is fixed to the inner wall of one side of the fixed shell (81), an installation connecting pad (83) is arranged at one end of the supporting spring (82), a supporting stabilizing plate (85) is fixed to one end of a supporting stabilizing block (84) fixed to one side of the installation connecting pad (83), guide stabilizing blocks (86) are fixed to both ends of the installation connecting pad (83), a damper (87) is arranged on the inner wall of one side of the fixed shell (81), a limiting sleeve (89) is fixed to the inner wall of one side of the fixed shell (81), and a limiting block (88) is fixed to one side of the installation connecting pad (83) close to the supporting spring (82).

5. An aircraft tug hydraulic steering unit according to claim 4 wherein, The fixed shell (81) and the fixed support (1) are fixedly connected, and one end of the damper (87) is fixedly connected with the installation connecting pad (83).

6. An aircraft tug hydraulic steering unit according to claim 4 wherein, A through hole is formed in the inner part of the fixed shell (81), and the size of the through hole is matched with the size of the supporting stabilizing block (84).

Images