Demonstration and maintenance rack of aircraft main landing gear

Abstract

The utility model provides a demonstration and maintenance rack for a main landing gear of an airplane. The demonstration and maintenance rack comprises a base and a rack main body, the rack main body is fixedly mounted on the base; the rack body comprises stand columns and a top frame, the top frame is fixedly connected to the tops of the stand columns, a set of main beams are arranged in the middle of the top frame, and main shaft seats used for being rotationally connected with force bearing stand columns of an aircraft main landing gear are fixedly arranged on the main beams. A set of auxiliary beams are fixedly arranged on the side of the main beam, and auxiliary shaft seats used for being rotationally connected with a folding and unfolding mechanism of a main landing gear of the aircraft are fixedly arranged on the auxiliary beams. The main landing gear fixing device can fix the main landing gear for maintenance and demonstration.

Description

Technical Field

[0001] The utility model relates to the field of aviation maintenance equipment, in particular to a demonstration and maintenance platform for an aircraft main landing gear. Background Art

[0002] Aircraft landing gear is used for landing and walking, and is an important part of the aircraft. Among them, the aircraft landing gear is divided into the front landing gear located at the nose and the main landing gear located on both sides.

[0003] Main landing gear requires securing during routine maintenance. In maintenance workshops, during routine training for aircraft maintenance technicians, the main landing gear also needs to be secured for display and demonstration. This requires a device that can secure the main landing gear without obstructing maintenance and allowing for adequate movement. The prior art lacks a dedicated device for securing aircraft main landing gear. Utility Model Content

[0004] The purpose of the utility model is to provide a demonstration and maintenance stand for the main landing gear of an aircraft, in order to solve the problems existing in the prior art, so as to fix the main landing gear for maintenance and demonstration.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A demonstration and maintenance stand for an aircraft main landing gear comprises a base and a stand body; the stand body is fixedly mounted on the base;

[0007] The main body of the test stand includes a column and a top frame. The top frame is fixedly connected to the top of the column. A group of main beams are provided in the middle of the top frame. The main beams are fixed with main axle seats for rotationally connecting to the load-bearing pillars of the aircraft's main landing gear; a group of secondary beams are fixed on the sides of the main beams. The secondary beams are fixed with secondary axle seats for rotationally connecting to the retraction and extension mechanism of the aircraft's main landing gear.

[0008] Furthermore, it also includes a ramp for assisting the movement of the main landing gear of the aircraft; the ramp is fixed to the edge of the base and connected to the base.

[0009] Furthermore, the shaft hole of the secondary shaft seat is arranged obliquely to the shaft hole of the main shaft seat.

[0010] Furthermore, it also includes a bottom universal wheel; the bottom universal wheel is installed under the base.

[0011] Furthermore, it also includes an adjusting foot, which is installed under the base and is threadedly connected to the base.

[0012] Furthermore, notches are provided on both sides of the base; the notches are detachably connected to a maintenance platform via fixing pins.

[0013] The utility model discloses a demonstration and maintenance platform for the main landing gear of an aircraft, wherein the load-bearing pillars of the main landing gear are connected via a main shaft seat on the platform body, and a retracting and extending mechanism can be connected via a secondary shaft seat. There is sufficient space around the platform for maintenance operations and for daily demonstration and teaching. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a structural diagram of a demonstration and maintenance stand for aircraft main landing gear provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0015] The technical solution of the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. Example 1

[0016] like Figure 1 As shown, the present invention provides a demonstration and maintenance stand for aircraft main landing gear, which includes a base 1 and a stand body 2 ; the stand body 2 is fixedly mounted on the base 1 .

[0017] The gantry body 2 includes a column 3 and a top frame. The top frame is fixedly connected to the top of the column 3. A group of main beams 4 are provided in the middle of the top frame. The main beams 4 are fixed with a main shaft seat 5 for rotationally connecting to the load-bearing pillars of the main landing gear of the aircraft; a group of secondary beams 6 are fixed on the side of the main beams 4. The secondary beams 6 are fixed with a secondary shaft seat 7 for rotationally connecting to the retraction and extension mechanism of the main landing gear of the aircraft.

[0018] The main body 2 supports the aircraft's main landing gear via uprights 3. During operation, the top of the main landing gear's load-bearing struts is mounted on the main axle mount 5, and the end of the main landing gear's retraction and extension mechanism is mounted on the secondary axle mount 7. The main landing gear is then hoisted onto the main body 2. The main body 2's frame structure provides ample space, ensuring routine maintenance and inspection of the main landing gear. The main landing gear also serves a demonstration purpose, allowing for steering, retraction, and other demonstrations.

[0019] In order to facilitate the assembly, disassembly and transportation of the aircraft main landing gear, preferably, a ramp 8 is further included to assist in the movement of the aircraft main landing gear; the ramp 8 is fixed to the edge of the base 1 and connected to the base 1. The aircraft main landing gear can be pushed onto the base 1 via the ramp 8.

[0020] Furthermore, the shaft hole of the secondary shaft seat 7 is arranged to be inclined with respect to the shaft hole of the main shaft seat 5 so as to cooperate with the movement of the retraction and extension mechanism of the main landing gear of the aircraft.

[0021] In order to facilitate the overall transportation of the platform, preferably, it also includes a bottom universal wheel 9; the bottom universal wheel 9 is installed under the base 1. In conjunction with it, it also includes an adjustment foot 10, which is installed under the base 1 and is threadedly connected to the base 1.

[0022] The universal wheels 9 at the bottom allow the platform to be moved along with the aircraft's main landing gear, allowing for flexible positioning during use. This not only facilitates demonstrations but also facilitates routine maintenance and inspections. Once positioned correctly, the adjustable feet 10 can be rotated and extended to support the ground, securing the platform's position. Both the universal wheels 9 and the adjustable feet 10 are concealed by the base 1 and ramp 8, remaining hidden from view and preventing interference with routine maintenance.

[0023] Furthermore, notches are provided on both sides of the base 1; the notches are detachably connected to a maintenance platform 11 via fixing pins.

[0024] During maintenance, if the wheels on the aircraft's front landing gear need to be replaced, a specialized wheel-changing vehicle will assist in the operation. In this case, the overly wide base 1 can hinder the operation. To do this, the maintenance platform 11 can be removed to facilitate access for the wheel-changing vehicle through the gaps on both sides of the base 1. During routine inspections or demonstrations, the maintenance platform 11 provides a platform for maintenance technicians to stand on, preventing them from stepping on empty space.

[0025] Generally speaking, the bottom of the maintenance platform 11 is also equipped with bottom universal wheels 9 to facilitate movement. Alternatively, the maintenance platform 11 can be directly installed on the base 1 to fill the gap.

[0026] The aircraft main landing gear demonstration and maintenance stand of the present invention has a simple structure and low cost. The main landing gear is hoisted via the stand body 2, meeting basic needs such as fixation, display, and movement, thereby facilitating maintenance, inspection, demonstration, and teaching. Furthermore, the stand has universal wheels 9 at the bottom, allowing for free movement.

[0027] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A demonstration and maintenance platform for aircraft main landing gear, characterized by: It includes a base and a stand body; the stand body is fixedly installed on the base; The main body of the test stand includes a column and a top frame. The top frame is fixedly connected to the top of the column. A group of main beams are provided in the middle of the top frame. The main beams are fixed with main axle seats for rotationally connecting to the load-bearing pillars of the aircraft's main landing gear; a group of secondary beams are fixed on the sides of the main beams. The secondary beams are fixed with secondary axle seats for rotationally connecting to the retraction and extension mechanism of the aircraft's main landing gear.

2. The aircraft main landing gear demonstration and maintenance stand according to claim 1, characterized in that: It also includes a ramp for assisting the movement of the main landing gear of the aircraft; the ramp is fixed to the edge of the base and connected with the base.

3. The aircraft main landing gear demonstration and maintenance stand according to claim 1, characterized in that: The shaft hole of the secondary shaft seat is arranged obliquely to the shaft hole of the main shaft seat.

4. The aircraft main landing gear demonstration and maintenance stand according to any one of claims 1 to 3, characterized in that: The utility model also comprises a bottom universal wheel; the bottom universal wheel is installed under the base.

5. The aircraft main landing gear demonstration and maintenance stand according to claim 4, characterized in that: It also includes an adjusting foot, which is installed under the base and is threadedly connected to the base.

6. The aircraft main landing gear demonstration and maintenance stand according to any one of claims 1 to 3, characterized in that: Notches are provided on both sides of the base; the notches are detachably connected to a maintenance platform via fixing pins.

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