Auxiliary dismounting and mounting platform for turbine starter on airplane

Abstract

An auxiliary dismounting and mounting platform for a turbine starter on an airplane is provided with a flat car, a lifting mechanism, a longitudinal moving platform, a transverse moving platform and a rotating platform. The flat car and lifting mechanism comprises a moving trolley, an oil cylinder, a shear type lifting frame and a lifting platform, the bottom of the shear type lifting frame is assembled with an underframe of the moving trolley, the top of the shear type lifting frame is assembled with the lifting platform, the oil cylinder is assembled with the underframe of the moving trolley through a hinged support, and a telescopic arm of the oil cylinder is assembled with the shear type lifting frame in a hinged mode; the longitudinal moving platform and the transverse moving platform are each provided with a fixed frame, a moving frame and a moving frame driving assembly. The rotating platform is provided with a rotating seat and a bracket, the rotating seat and the transverse moving frame are assembled through a pivot shaft, and the bracket is assembled on the rotating seat. According to the utility model, the turbine starter can be well attached to a mounting rack at the belly of an airplane, so that the purposes of reducing the labor intensity of an operator and improving the working efficiency are achieved.

Description

Technical Field

[0001] This utility model relates to the field of aircraft maintenance technology, specifically to an auxiliary disassembly and assembly platform for aircraft turbine starters. Background Technology

[0002] During aircraft overhaul, performance testing of the turbine starter is one of the important maintenance items. Before testing the turbine starter, maintenance personnel need to remove the turbine starter mounted on the aircraft fuselage. After the testing is completed, the turbine starter is then reinstalled on the aircraft fuselage in its original position.

[0003] Traditional turbine starter assembly and disassembly methods require the cooperation of three to five maintenance personnel. Especially during turbine starter assembly, two to four personnel first lift the turbine starter, then continuously adjust its position to align it with the mounting bracket on the aircraft's belly, locating the installation point. Then, two to four personnel hold the turbine starter in place by lifting, while another personnel uses tools to secure it to the mounting bracket on the aircraft's belly. Because this process requires the cooperation of multiple personnel, and the lifting force of personnel in different positions is difficult to precisely control, it easily causes the turbine starter to collide with the aircraft. Furthermore, the disassembly and assembly process involves high labor intensity and low work efficiency, failing to meet the requirements for rapid assembly and disassembly, thus affecting the progress of aircraft overhaul work. Utility Model Content

[0004] This utility model provides an auxiliary assembly and disassembly platform for aircraft turbine starters. It aims to transport and position the turbine starter by coordinating a flatbed truck and lifting mechanism, a longitudinal moving platform, a lateral moving platform and a rotating platform, so that it fits snugly against the mounting bracket on the aircraft belly, thereby reducing the operator's labor intensity and improving work efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An auxiliary disassembly and assembly platform for an aircraft turbine starter includes a flatbed cart and lifting mechanism, a longitudinal moving platform, a lateral moving platform, and a rotating platform. The flatbed cart and lifting mechanism include a moving trolley, a hydraulic cylinder, a scissor lift, and a lifting platform. The moving trolley has a base frame; the bottom of the scissor lift is fitted to the base frame of the moving trolley, and the top of the scissor lift is fitted to the lifting platform. The hydraulic cylinder is fitted to the base frame of the moving trolley via a hinged bracket, and the telescopic arm of the hydraulic cylinder is hingedly assembled to the scissor lift. The longitudinal moving platform includes a longitudinal fixed frame, a longitudinal moving frame, and a longitudinal moving frame drive assembly. A fixed frame is installed on the lifting platform. A longitudinal moving frame is installed in the longitudinal fixed frame. The longitudinal moving frame moves left and right under the drive of the longitudinal moving frame drive assembly. The transverse moving platform has a transverse fixed frame, a transverse moving frame, and a transverse moving frame drive assembly. The transverse fixed frame is fixedly connected to the longitudinal moving frame. The transverse moving frame is installed in the transverse fixed frame. The transverse moving frame moves back and forth under the drive of the transverse moving frame drive assembly. The rotating platform has a rotating seat and a bracket. The rotating seat is assembled to the transverse moving frame through a pivot shaft. The bracket is mounted on the rotating seat.

[0007] The aforementioned aircraft turbine starter auxiliary assembly and disassembly platform has a mobile trolley with a base frame equipped with a longitudinal beam having a sliding groove structure, and a lifting platform with a sliding groove on its bottom surface. The bottom and top ends of the scissor lift are respectively hinged to the longitudinal beam of the base frame and the lifting platform, while the other ends of the bottom and top of the scissor lift are free ends. When the telescopic arm of the hydraulic cylinder moves, the bottom and top free ends of the scissor lift move left and right in the sliding groove of the longitudinal beam of the mobile trolley base frame and the sliding groove on the bottom surface of the lifting platform, thereby driving the lifting platform to move up and down.

[0008] The aforementioned aircraft turbine starter auxiliary disassembly and assembly platform has a square frame structure for the longitudinal fixed frame, the longitudinal moving frame, the transverse fixed frame, and the transverse moving frame. Slide grooves are provided on the inner sidewalls of the longitudinal fixed frame and the transverse fixed frame, and rollers are provided between the longitudinal moving frame and the longitudinal fixed frame, and between the transverse moving frame and the transverse fixed frame.

[0009] The aforementioned aircraft turbine starter auxiliary disassembly and assembly platform has a screw and nut transmission structure for both the longitudinal moving frame drive assembly and the lateral moving frame drive assembly. The screw is fitted with a threaded hole provided on the longitudinal or lateral fixed frame. A handwheel is provided at the outer end of the screw, and the inner end of the screw is fixedly connected to the longitudinal or lateral moving frame.

[0010] The aforementioned aircraft turbine starter auxiliary disassembly and assembly platform has transverse fixed frame connecting seats at the four corners of the longitudinal moving frame.

[0011] The aforementioned aircraft turbine starter auxiliary disassembly and assembly platform has a bearing installed between the lateral moving frame of the lateral moving platform and the rotating seat of the rotating platform.

[0012] The aforementioned aircraft turbine starter auxiliary disassembly and assembly platform has a detachable spring pin between the lateral moving frame of the lateral moving platform and the rotating seat of the rotating platform.

[0013] The aforementioned aircraft turbine starter auxiliary disassembly and assembly platform has a rotating platform with a wooden bracket, comprising two parts arranged on the left and right. The bracket is provided with a positioning groove that matches the structure of the aircraft turbine starter, and a protective pad is provided on the contact surface between the bracket and the aircraft turbine starter.

[0014] The aforementioned aircraft turbine starter auxiliary disassembly and assembly platform has casters at the four corners of the base frame of the mobile trolley, and at least one of the casters is equipped with a braking structure.

[0015] The aforementioned aircraft turbine starter auxiliary disassembly and assembly platform includes a mobile trolley equipped with a push-pull rod.

[0016] This invention provides an auxiliary assembly and disassembly platform for aircraft turbine starters. It includes a flatbed cart and a lifting mechanism, enabling the transport of the aircraft turbine starter between the inspection and disassembly / assembly stations via a moving trolley within the flatbed cart and lifting mechanism. The platform also incorporates a hydraulic cylinder, a scissor lift, and a lifting platform. The hydraulic cylinder drives the scissor lift, which in turn moves the lifting platform up and down. Furthermore, the invention includes a longitudinal moving platform, a lateral moving platform, and a rotating platform, allowing the aircraft turbine starter to be placed on a bracket on the rotating platform, enabling adjustment of the turbine starter at any position on a plane. Therefore, this invention ensures a good fit between the turbine starter and the mounting bracket on the aircraft belly during the assembly and disassembly process before and after aircraft turbine starter inspection, thereby reducing operator workload and improving work efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 yes Figure 1 K-direction view;

[0019] Figure 3 This is an exploded structural diagram of the main components of this utility model;

[0020] Figure 4 This is a schematic diagram of the flatbed truck and its lifting mechanism;

[0021] Figure 5 yes Figure 4 K-item view;

[0022] Figure 6 This is a schematic diagram of the longitudinal moving platform structure;

[0023] Figure 7 This is a schematic diagram of the structure of the lateral moving platform and the rotating platform;

[0024] Figure 8 This is a cross-sectional structural diagram of the lateral moving platform and the rotating platform.

[0025] Explanation of each label in the diagram:

[0026] 1 is a flatbed truck and lifting mechanism.

[0027] 1-1 is the base frame, 1-2 is the hydraulic cylinder, 1-3 is the scissor lift frame, 1-4 is the lifting platform, 1-5 is the push-pull rod, 1-6 is the caster, and 1-7 is the hinged bracket.

[0028] 2 is a longitudinal moving platform

[0029] 2-1 is the longitudinal fixed frame, 2-2 is the longitudinal moving frame, 2-3 is the longitudinal moving frame drive component, 2-4 is the transverse fixed frame connecting seat, and 2-5 is the roller;

[0030] 3 is a lateral movement platform

[0031] 3-1 is the horizontally fixed frame, 3-2 is the horizontally moving frame, and 3-3 is the horizontally moving frame driving component;

[0032] 4 is a rotating platform

[0033] 4-1 is the rotating seat, 4-2 is the bracket, 4-3 is the pivot shaft, 4-4 is the bearing, and 4-5 is the spring pin. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0035] See Figure 1 , Figure 2 , Figure 3 This utility model provides an auxiliary disassembly and assembly platform for aircraft turbine starters. It is equipped with a flatbed cart and lifting mechanism 1, a longitudinal moving platform 2, a lateral moving platform 3, and a rotating platform 4. During major overhauls of aircraft, the turbine starter can be transported between the disassembly and assembly station and the inspection station through the flatbed cart and lifting mechanism 1, and its height position can be adjusted. The longitudinal moving platform 2, the lateral moving platform 3, and the rotating platform 4 can adjust the front-back, left-right, and orientation of the turbine starter, thereby reducing the labor intensity of the operator and improving work efficiency.

[0036] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The auxiliary disassembly and assembly platform for aircraft turbine starters described in this utility model includes a mobile trolley, a hydraulic cylinder 1-2, a scissor lift frame 1-3, and a lifting platform 1-4 in its flatbed and lifting mechanism 1. The mobile trolley is equipped with a base frame 1-1 and a push-pull rod 1-5. A longitudinal beam with a sliding groove structure on the inner sidewall is provided on the base frame 1-1, and casters 1-6 are provided at the four corners of the base frame 1-1, with a braking structure provided on at least one of the casters. The bottom surface of the lifting platform 1-4 is provided with a sliding groove structure. The bottom end of the scissor lift frame 1-3 is hinged to the longitudinal beam of the base frame 1-1, and the top end of the scissor lift frame 1-3 is hinged to the lifting platform 1-4. The bottom and top ends of the scissor lift frame 1-3 are free ends, which can slide left and right in the sliding groove on the inner side wall of the longitudinal beam of the base frame and the sliding groove on the bottom surface of the lifting platform. The hydraulic cylinder 1-2 is fitted to the base frame 1-1 of the moving trolley through the hinge bracket 1-7, and the telescopic arm of the hydraulic cylinder 1-2 is hinged to the scissor lift frame 1-3.

[0037] See Figure 1 , Figure 2 , Figure 3 , Figure 6 The aircraft turbine starter auxiliary disassembly and assembly platform of this utility model has a longitudinal moving platform 2 with a longitudinal fixed frame 2-1, a longitudinal moving frame 2-2, and a longitudinal moving frame drive assembly 2-3. The longitudinal fixed frame 2-1 is installed on the lifting platform 1-4, and the longitudinal moving frame 2-2 is installed in the longitudinal fixed frame 2-1. Both the longitudinal fixed frame 2-1 and the longitudinal moving frame 2-2 are square frame structures, and a sliding groove is provided on the inner side wall of the longitudinal fixed frame 2-1. A roller 2-5 is provided between the longitudinal moving frame 2-2 and the longitudinal fixed frame 2-1. The longitudinal moving frame 2-2 moves left and right under the drive of the longitudinal moving frame drive assembly 2-3. The longitudinal moving frame drive assembly 2-3 is a screw and nut transmission structure. The screw is fitted with a threaded hole provided on the longitudinal fixed frame 2-1. A handwheel is provided at the outer end of the screw, and the inner end of the screw is fixedly connected to the longitudinal moving frame 2-2.

[0038] See Figure 1 , Figure 2 , Figure 3 , Figure 7 , Figure 8The aircraft turbine starter auxiliary disassembly and assembly platform of this utility model has a transverse moving platform 3 with a transverse fixed frame 3-1, a transverse moving frame 3-2, and a transverse moving frame drive assembly 3-3. The transverse fixed frame 3-1 is fixedly connected to the longitudinal moving frame 2-2. The transverse moving frame 3-2 is installed in the transverse fixed frame 3-1. Both the transverse fixed frame 3-1 and the transverse moving frame 3-2 are square frame structures, and a sliding groove is provided on the inner side wall of the transverse fixed frame 3-1. A roller (not shown in the figure, the roller structure and installation method are the same as the roller 2-5 in the longitudinal moving platform 2) is provided between the transverse fixed frame 3-1 and the transverse moving frame 3-2. The transverse moving frame 3-2 moves back and forth under the drive of the transverse moving frame drive assembly 3-3. The transverse moving frame drive assembly 3-3 is a lead screw and nut transmission structure. The lead screw is fitted with a threaded hole provided on the transverse fixed frame 3-1. A handwheel is provided at the outer end of the lead screw, and the inner end of the lead screw is fixedly connected to the transverse moving frame 3-2.

[0039] See Figure 1 , Figure 2 , Figure 3 , Figure 7 , Figure 8 The auxiliary assembly and disassembly platform for the aircraft turbine starter described in this utility model has a rotating platform 4 with a rotating seat 4-1 and a bracket 4-2. The rotating seat 4-1 is assembled with the transverse moving frame 3-2 via a pivot shaft 4-3. A bearing 4-4 ​​is provided between the transverse moving frame 3-2 and the rotating seat 4-1 of the transverse moving platform 3. The bracket 4-2 is assembled on the rotating seat 4-1. The bracket 4-2 is made of wood and includes two parts arranged on the left and right. The bracket 4-2 is provided with a positioning groove that matches the structure of the aircraft turbine starter, and a protective pad is provided on the contact surface between the bracket 4-2 and the aircraft turbine starter.

[0040] See Figure 1 , Figure 2 , Figure 7 , Figure 8 The aircraft turbine starter auxiliary disassembly and assembly platform of this utility model has a detachable spring pin 4-5 between the lateral moving frame 3-2 of the lateral moving platform 3 and the rotating seat 4-1 of the rotating platform 4. After the rotating platform 4 adjusts the placement posture of the turbine starter to the correct position, the rotating seat 4-1 and the lateral moving frame 3-2 can be fixedly connected by the spring pin 4-5 to realize the limiting function of the rotating seat 4-1.

[0041] See Figures 1 to 8When using this utility model to assist in the disassembly of the turbine starter on an aircraft, only two operators are needed to complete the disassembly. The specific operating steps are as follows: push the trolley directly under the turbine starter and brake the casters 1-6 on the base frame 1-1; rotate the rotating seat 4-1 of the rotating platform 4, visually align the bracket 4-2 with both sides of the turbine starter, and then control the hydraulic cylinder 1-2 to lift the longitudinal moving platform 2, the lateral moving platform 3, and the rotating platform 4 through the scissor lift until the bracket 4-2 contacts the turbine starter; then, one operator controls the turbine starter auxiliary disassembly platform to be in a fixed state, while the other operator begins to disassemble the turbine starter; after disassembly is completed, control the hydraulic cylinder 1-2 to lower the longitudinal moving platform 2, the lateral moving platform 3, and the rotating platform 4 to the set height through the scissor lift, then release the braked casters 1-6, and move the turbine starter to the designated position using the trolley. When using this utility model to assist in the assembly of a turbine starter on an aircraft, the turbine starter to be installed is placed on the bracket 4-2 of the rotating platform 4. The hydraulic cylinder 1-2 is activated, and the longitudinal moving platform 2, the lateral moving platform 3, and the rotating platform 4 are lowered below the turbine starter installation position on the aircraft via the scissor lift. Two people work together to push the turbine starter auxiliary assembly / disassembly platform below the turbine starter installation position on the aircraft. The casters 1-6 on the base frame 1-1 are braked, and the hydraulic cylinder 1-2 is activated. The longitudinal moving platform 2, the lateral moving platform 3, and the rotating platform 4 are then lowered via the scissor lift. 4. Lift the turbine starter until it is about 10 cm below the installation position. Fine-tune the position of the turbine starter by moving the longitudinal platform 2 and the transverse platform 3 to adjust the turbine starter to be directly below the installation position. Then, manually rotate the rotating platform 4 to adjust the attitude of the turbine starter. Finally, raise the turbine starter by moving the hydraulic cylinders 1-2 to make the turbine starter precisely aligned with the installation position. Then, one operator controls the turbine starter to keep the auxiliary disassembly and assembly platform in a fixed state while the other operator performs the installation. The installation of the turbine starter can be completed by the cooperation of two people.

Claims

1. An auxiliary disassembly and assembly platform for an aircraft turbine starter, characterized in that: The system includes a flatbed cart and lifting mechanism (1), a longitudinal moving platform (2), a transverse moving platform (3), and a rotating platform (4). The flatbed cart and lifting mechanism (1) includes a moving trolley, a hydraulic cylinder (1-2), a scissor lift frame (1-3), and a lifting platform (1-4). The moving trolley has a base frame (1-1). The bottom of the scissor lift frame (1-3) is fitted with the base frame (1-1) of the moving trolley, and the top of the scissor lift frame (1-3) is fitted with the lifting platform (1-4). The hydraulic cylinder (1-2) is fitted with the base frame (1-1) of the moving trolley via a hinged bracket (1-7), and the telescopic arm of the hydraulic cylinder (1-2) is hinged to the scissor lift frame (1-3). The longitudinal moving platform (2) includes a longitudinal fixed frame (2-1), a longitudinal moving frame (2-2), and a longitudinal moving frame drive assembly (2-3). The longitudinal fixed frame (2-1) is mounted on the lifting platform. 1-4) Above, a longitudinal moving frame (2-2) is installed in the longitudinal fixed frame (2-1), and the longitudinal moving frame (2-2) moves left and right under the drive of the longitudinal moving frame drive assembly (2-3); the transverse moving platform (3) is provided with a transverse fixed frame (3-1), a transverse moving frame (3-2) and a transverse moving frame drive assembly (3-3), the transverse fixed frame (3-1) is fixedly connected to the longitudinal moving frame (2-2), the transverse moving frame (3-2) is installed in the transverse fixed frame (3-1), and the transverse moving frame (3-2) moves back and forth under the drive of the transverse moving frame drive assembly (3-3); the rotating platform (4) is provided with a rotating seat (4-1) and a bracket (4-2), the rotating seat (4-1) and the transverse moving frame (3-2) are assembled through a pivot shaft (4-3), and the bracket (4-2) is assembled on the rotating seat (4-1).

2. The aircraft turbine starter auxiliary disassembly and assembly platform according to claim 1, characterized in that: The base frame (1-1) of the mobile trolley is provided with a longitudinal beam with a sliding groove structure; the bottom surface of the lifting platform (1-4) is provided with a sliding groove; the bottom and top ends of the scissor lift frame (1-3) are respectively hinged to the longitudinal beam of the base frame (1-1) and the lifting platform (1-4), and the other end of the bottom and top of the scissor lift frame (1-3) is a free end. When the telescopic arm of the hydraulic cylinder (1-2) moves, the bottom and top free ends of the scissor lift frame (1-3) move left and right in the sliding groove of the longitudinal beam of the mobile trolley base frame and the sliding groove of the bottom surface of the lifting platform, thereby driving the lifting platform (1-4) to move up and down.

3. The aircraft turbine starter auxiliary disassembly and assembly platform according to claim 2, characterized in that: The longitudinal fixed frame (2-1), the longitudinal moving frame (2-2), the transverse fixed frame (3-1), and the transverse moving frame (3-2) are all square frame structures. Sliding grooves are provided on the inner sidewalls of the longitudinal fixed frame (2-1) and the transverse fixed frame (3-1). Rollers (2-5) are provided between the longitudinal moving frame (2-2) and the longitudinal fixed frame (2-1), and between the transverse moving frame (3-2) and the transverse fixed frame (3-1).

4. The aircraft turbine starter auxiliary disassembly and assembly platform according to claim 3, characterized in that: Both the longitudinal moving frame drive assembly (2-3) and the transverse moving frame drive assembly (3-3) are screw and nut transmission structures. The screw is fitted with a threaded hole provided on the longitudinal fixed frame (2-1) or the transverse fixed frame (3-1). A handwheel is provided at the outer end of the screw, and the inner end of the screw is fixedly connected to the longitudinal moving frame (2-2) or the transverse moving frame (3-2).

5. The aircraft turbine starter auxiliary disassembly and assembly platform according to claim 3 or 4, characterized in that: A transverse fixed frame connecting seat (2-4) is provided at the four corners of the longitudinal moving frame (2-2).

6. The aircraft turbine starter auxiliary disassembly and assembly platform according to claim 5, characterized in that: A bearing (4-4) is provided between the transverse moving frame (3-2) of the transverse moving platform (3) and the rotating seat (4-1) of the rotating platform (4).

7. The aircraft turbine starter auxiliary disassembly and assembly platform according to claim 6, characterized in that: A detachable spring pin (4-5) is provided between the transverse moving frame (3-2) of the transverse moving platform (3) and the rotating seat (4-1) of the rotating platform (4).

8. The aircraft turbine starter auxiliary disassembly and assembly platform according to claim 7, characterized in that: The bracket (4-2) of the rotating platform (4) is made of wood and includes two parts arranged on the left and right. The bracket is provided with a positioning groove that matches the structure of the turbine starter on the aircraft, and a protective pad is provided on the contact surface between the bracket (4-2) and the turbine starter on the aircraft.

9. The aircraft turbine starter auxiliary disassembly and assembly platform according to claim 7, characterized in that: The mobile trolley is equipped with casters (1-6) at the four corners of the base frame (1-1), and a braking structure is installed on one of the casters.

10. The aircraft turbine starter auxiliary disassembly and assembly platform according to claim 7, characterized in that: The mobile trolley is equipped with push-pull rods (1-5).

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