CN214450018U

CN214450018U - Hand-push type bracket for loading and unloading aircraft wheels

Info

Publication number: CN214450018U
Application number: CN202120276472.5U
Authority: CN
Inventors: 娄金涛; 孙明虎; 陈雨; 张万顺; 井俊岗
Original assignee: Xian Aviation Brake Technology Co Ltd
Current assignee: Xian Aviation Brake Technology Co Ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2021-10-22
Anticipated expiration: 2031-01-29

Abstract

A hand-push type bracket for loading and unloading an aircraft wheel comprises a supporting plate, a roller shaft, a roller assembly and a conical sleeve. The supporting plate comprises a frame and a supporting rod. The shaft sleeve is positioned at one end of the supporting plate; the two supporting rods are parallel to each other and form an airplane wheel clamping groove, roller mounting grooves are formed between the two supporting rods and the frame of the frame on one side where the supporting rods are located, and the two roller assemblies are located in the roller assembly mounting grooves respectively. A push rod is mounted on the shaft sleeve. The axle sleeve is internally provided with an axle, and a pair of rollers are arranged at two ends of the axle. The invention is suitable for mounting and dismounting the aviation brake wheel assembly with the tire on the undercarriage, and can also be used for the non-brake wheel, thereby improving the convenience of mounting the wheel, saving time and labor, reducing the requirement on the operation level of personnel, and effectively reducing the maintenance working intensity and time of the airplane.

Description

Hand-push type bracket for loading and unloading aircraft wheels

Technical Field

The invention relates to the field of use and maintenance of aircraft wheels, in particular to an auxiliary tool for moving, mounting and dismounting aircraft wheels in an airport.

Background

An aircraft brake wheel typically consists of a wheel assembly and a brake assembly. When the brake wheels are installed on the landing gear of the airplane, ground service personnel fix the brake device on the landing gear and then install the wheel assemblies on the brake device to form the brake wheels. When the brake wheel is used, a movable brake disc on the brake device is matched with a guide rail of the wheel assembly and synchronously rotates relative to the landing gear shaft, and a static brake disc on the brake device is static relative to the landing gear shaft. When the aircraft brake, the dynamic and static brake discs are pressed mutually under the action of the piston to generate braking torque, thereby realizing the braking of the aircraft.

In order to enable the wheel assembly to rotate along with the wheel assembly and ensure the realization of the braking function, when the wheel assembly is installed, a group of convex keys uniformly distributed on the inner circumference of the opening end of the wheel assembly are required to be inserted into the grooves of the movable brake disc, so that the wheel assembly needs to be rotated in advance, and the convex keys of the wheel assembly and the grooves of the movable brake disc are aligned and then installed. When the ground crew works, the wheel assembly is lifted and sleeved on the landing gear shaft by manpower, or the wheel assembly is jacked up by using a crow bar. If the raised keys on the wheel assembly and the dynamic brake disc grooves are not aligned, the wheel assembly needs to be put down and reinstalled after the position is adjusted on the ground. After the aircraft wheel assembly is additionally provided with tires, the weight of the aircraft wheel assembly usually reaches 50 kg-100 kg, the aircraft wheel assembly is very inconvenient to carry and adjust the installation position only by manpower, and personnel injury or the structure of the aircraft wheel assembly is easy to collide and damage during installation. The space near the landing gear of the airplane is narrow relative to other parts of the airplane, and cannot accommodate too many ground service personnel and large tools.

Disclosure of Invention

The invention provides a hand-push type bracket for loading and unloading an aircraft wheel, aiming at solving the problems of inconvenient operation, difficult position adjustment and labor waste when the aircraft wheel with a tire is installed.

The invention comprises a supporting plate, a roller shaft, a roller assembly and a conical sleeve. The supporting plate is of a frame-shaped structure and comprises a frame, a shaft sleeve and a supporting rod. The supporting plate is positioned at one end of the supporting plate; two parallel supporting rods are arranged in the frame of the supporting plate; an airplane wheel clamping groove is formed between the two supporting rods, a roller mounting groove is formed between the two supporting rods and the frame of the frame on one side where the two supporting rods are located, and the two roller assemblies are located in the roller assembly mounting groove respectively. A push rod is mounted on the shaft sleeve. The axle sleeve is internally provided with an axle, and a pair of rollers are arranged at two ends of the axle.

The central lines of the two support rods in the frame of the supporting plate are respectively vertical to the central line of the shaft sleeve; the central line of each roller assembly is respectively vertical to the central line of the shaft sleeve, and the two ends of each roller shaft are respectively fixedly connected with the frame of the frame.

The roller assembly comprises a roller and a conical sleeve. Two rollers are sleeved on the roller shaft and are in rotating fit with each other. The tapered sleeve is sleeved on the roller shaft and positioned at the front end of the roller assembly, and the end surface of the large end of the tapered sleeve is in contact with the end surface of each roller.

The inner diameter of the conical sleeve is the same as the outer diameter of the roller shaft, and the conical sleeve and the roller shaft are in clearance fit. The taper of the outer surface of the tapered sleeve is 10 deg..

The axial length of the conical sleeve is 9mm, the maximum outer diameter is 28mm, and the inner diameter is 21 mm.

The length of roller component mounting groove is 300mm, and the width is 60 mm.

The width of wheel draw-in groove is 120mm, and length is 300 mm.

The length of the wheel shaft is 80-100 mm longer than that of the shaft sleeve.

The length of the roller shaft is matched with that of the roller component mounting groove, and the outer diameter of the roller shaft is 20 mm. One end of the roller shaft is a conical section; the axial length of the conical section is 15mm, the taper is 19 degrees, and the diameter of the large end is 20 mm.

The invention is suitable for mounting and dismounting the aviation brake wheel assembly with the tire on the undercarriage, and can also be used for the non-brake wheel.

When the airplane wheel lifting device is operated, 1 person operates the handrail with the push rod supporting plate, one side of the supporting plate with the push rod supporting plate is attached to the ground, the other person moves the airplane wheel to the roller component, the airplane wheel is in a standing state, one side with the guide rail faces to the brake device, the handrail with the push rod supporting plate is operated, the airplane wheel is placed at the position aligned with the brake device, the airplane wheel is rotated by hands until the convex key of the airplane wheel component is aligned with the groove of the movable brake disc, and the airplane wheel is pushed to the lifting frame shaft, so that the airplane wheel lifting device is installed. And operating the handrail with the push rod supporting plate, and enabling the wheel bracket of the hand-push type loader to exit from the mounting position.

According to the lever principle and the roller structure, the convenience of mounting the airplane wheel is improved, time and labor are saved, the requirement on the operation level of personnel is lowered, and the maintenance work intensity and time of the airplane can be effectively reduced.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a side view of fig. 1.

Fig. 3 is a top view of fig. 1.

Fig. 4 is a schematic view of the construction of the axle.

Fig. 5 is a schematic structural view of the roller.

Fig. 6 is a schematic view of the structure of the drum shaft.

Fig. 7 is an assembly view of the drum.

Fig. 8 is a front view of a tapered sleeve.

Fig. 9 is a three-dimensional schematic view of a tapered sleeve.

Figure 10 is a schematic view of the assembly of the axle and the roller.

Fig. 11 is a schematic view of the assembly of the drum with the tapered sleeve.

Figure 12 is a schematic view of the inventive transshipment wheel.

Fig. 13 is a side view of fig. 12.

In the figure: 1. a push rod; 2. a support plate; 3. a shaft sleeve; 4. a handrail; 5. a wheel axle; 6. a roller; 7. a nut; 8. a drum shaft; 9, a roller; 10. a tapered sleeve; 11. a roller assembly; 12. a wheel.

Detailed Description

The present embodiment is a hand propelled carriage for outfield moving, turning, mounting and dismounting wheels comprising a pallet 2, rollers 6, a drum shaft 8, a drum assembly 11 and a tapered sleeve 10. The supporting plate 2 is of a frame-shaped structure and comprises a frame, a supporting rod and a shaft sleeve 3. The shaft sleeve 3 is positioned at one end of the supporting plate; two parallel supporting rods are arranged in the frame of the supporting plate, a roller mounting groove is formed between each supporting rod and the frame of the frame on the side where the supporting rod is located, and the two roller assemblies 11 are respectively located in the roller assembly mounting grooves. A push rod 1 is arranged on the shaft sleeve; the end of the push rod is provided with a handrail 4. The axle sleeve is internally provided with an axle 5, and a pair of rollers 6 are arranged at two ends of the axle.

The supporting plate 2 is 400mm in length, 400mm in width and 10mm in plate thickness. Two parallel support rods are arranged in the frame of the supporting plate, and the central lines of the support rods are respectively perpendicular to the central line of the shaft sleeve 3. A roller mounting groove is formed between the two support rods and the frame of the frame on one side, the two roller assemblies 10 are respectively positioned in the roller assembly mounting grooves, and two ends of a roller shaft 8 in each roller assembly are respectively fixedly connected with the frame of the frame; the central line of each roller assembly is respectively vertical to the central line of the shaft sleeve 3. An airplane wheel clamping groove is formed between the two supporting rods. In this embodiment, the width of wheel draw-in groove is 120mm, and length is 300 mm.

The roller assembly further comprises a roller 9 and a tapered sleeve 10. Two rollers are sleeved on the roller shaft and are in rotating fit with each other. The tapered sleeve 10 is sleeved on the roller shaft and positioned at the front end of the roller assembly, and the end face of the large end of the tapered sleeve is in contact with the end face of each roller. In this embodiment, the roller assembly mounting groove has a length of 300mm and a width of 60 mm.

The length of the shaft sleeve 3 is the same as the width of the supporting plate. In this embodiment, the length of the shaft sleeve is 400mm, the outer diameter is 50mm, and the inner diameter is 40 mm.

The lower end of the main rod of the handrail 4 is welded with the shaft sleeve, and forms an included angle of 135 degrees with the surface of the supporting plate. The upper end of the main rod is provided with a handle. The mobile jib and the handle of handrail are tubular structure, and length is 1400mm, and the external diameter is 20mm, and the internal diameter is 15 mm. And reinforcing ribs are respectively arranged at two ends of the main rod for supporting.

The wheel shaft 5 is of a tubular structure and is arranged in the shaft sleeve through a bearing; the outer circumferential surfaces of both ends of the wheel shaft are threaded surfaces for mounting the nut 7. The length of the wheel shaft is 80-100 mm longer than that of the shaft sleeve. In this embodiment, the length of the axle is 500mm, the outer diameter is 38mm, the inner diameter is 30mm, and the length of the thread surface is 40 mm.

The rollers 6 are sleeved on two ends of the wheel shaft and are fastened through the nuts 7.

The length of the roller shaft 8 is matched with that of the roller component mounting groove, and the outer diameter is 20 mm. One end of the roller shaft is a conical section; the axial length of this conical section is 15mm, and the tapering is 19, and the main aspects diameter is 20mm for guide wheel subassembly is transported to the layer board from ground.

The drum 9 is a tubular structure, and the length of the drum is less than that of the drum shaft 8. 250mm, 24mm inner diameter and 30mm maximum outer diameter. The tapered end cone section has an axial length of 11mm, a maximum outer diameter of 30mm and a taper of 5 ° for further guiding the wheel assembly onto the drum.

The conical sleeve 10 is a hollow rotary body, and the outer surface of the conical sleeve is a conical surface. The axial length of the conical sleeve is about 10 mm. The tapered sleeve has an inner diameter that is the same as the outer diameter of the drum shaft 8 and provides a clearance fit therebetween. The taper of the outer surface of the tapered sleeve is 10 degrees. The tapered sleeve is used for guiding the airplane wheel assembly to the tapered sleeve, is positioned between the roller tapered section and the roller shaft tapered section and has the function of transition taper. In this embodiment, the tapered sleeve has an axial length of 9mm, a maximum outer diameter of 28mm and an inner diameter of 21 mm.

During assembly, the roller 9 is mounted on the

roller shaft

8, 1 gasket is mounted on the non-tapered side of the roller shaft 8, and the tapered sleeve 11 is mounted at the tapered end to form the roller assembly 10. 2 roller assemblies 11 are welded in 2 slots on the pallet 2 with the push rod pallet 1, wherein the tapered ends of the roller assemblies are away from the handrail 3. Installing a wheel shaft 5 in the shaft sleeve 2 with the push rod supporting plate 1, wherein one end of the roller 6 with a step faces outwards; and is tightened with a nut 7. The invention is completed by assembly.

During operation, 1 person manipulates the handrail 4 with the push rod supporting plate 1, pastes one side of the supporting plate 2 with the push rod supporting plate 1 to the ground, and the other person 1 moves the wheel to the roller component 10, the wheel is in a standing state, one side with the guide rail faces to the brake device, manipulates the handrail 4 with the push rod supporting plate 1, places the wheel at a position aligned with the brake device, rotates the wheel by hand until a convex key of the wheel component is aligned with a groove of the movable brake disc, pushes the wheel to a lifting frame shaft, and the installation is completed. And operating the handrail 4 with the push rod supporting plate 1 to withdraw the wheel bracket of the hand-push type loader from the mounting position.

Claims

1. A hand-push type bracket for loading and unloading an aircraft wheel is characterized by comprising a supporting plate, a roller shaft, a roller assembly and a conical sleeve; the supporting plate is of a frame-shaped structure and comprises a frame, a shaft sleeve and a supporting rod; the shaft sleeve is positioned at one end of the supporting plate; two parallel supporting rods are arranged in the frame of the supporting plate; an airplane wheel clamping groove is formed between the two supporting rods, a roller mounting groove is formed between the two supporting rods and the frame of the frame on one side, and the two roller assemblies are respectively positioned in the roller assembly mounting grooves; a push rod is arranged on the shaft sleeve; the axle sleeve is internally provided with an axle, and a pair of rollers are arranged at two ends of the axle.

2. A push bracket for loading and unloading aircraft wheels according to claim 1, characterised in that the centre lines of the two support rods in the frame of the carrier are each perpendicular to the centre line of the bushing; the central line of each roller assembly is respectively vertical to the central line of the shaft sleeve, and the two ends of each roller shaft are respectively fixedly connected with the frame of the frame.

3. A push bracket for loading and unloading an aircraft wheel according to claim 1, characterised in that said roller assembly includes a roller and a tapered sleeve; the two rollers are sleeved on the roller shaft and are in running fit with each other; the tapered sleeve is sleeved on the roller shaft and positioned at the front end of the roller assembly, and the end surface of the large end of the tapered sleeve is in contact with the end surface of each roller.

4. A push bracket for loading and unloading aircraft wheels according to claim 3, characterised in that the internal diameter of said tapered sleeve is the same as the external diameter of said drum shaft, with a clearance fit between them; the taper of the outer surface of the tapered sleeve is 10 deg..

5. A push bracket for loading and unloading aircraft wheels according to claim 3, characterised in that the axial length of said tapered sleeve is 9mm, the maximum external diameter is 28mm and the internal diameter is 21 mm.

6. A push bracket for loading and unloading aircraft wheels according to claim 3, wherein the roller assembly mounting slot is 300mm in length and 60mm in width.

7. A push bracket for loading and unloading an aircraft wheel as claimed in claim 1, wherein said wheel slot has a width of 120mm and a length of 300 mm.

8. A push bracket for loading and unloading an aircraft wheel as claimed in claim 1, wherein said axle length is 80-100 mm longer than said sleeve.

9. A push bracket for loading and unloading an aircraft wheel according to claim 1, characterised in that the length of the roller shaft is adapted to the length of the roller assembly mounting groove, and the outer diameter is 20 mm; one end of the roller shaft is a conical section; the axial length of the conical section is 15mm, the taper is 19 degrees, and the diameter of the large end is 20 mm.