Maintenance platform for aircraft drive generator

Abstract

The invention discloses a maintenance platform for an aircraft drive generator. The maintenance platform comprises a support frame and a maintenance platform, the bearing platform is provided with a through hole, and the bearing platform is configured to support and drive the generator; the linkage box body is arranged on the supporting frame, the linkage box body is rotationally connected with the bearing platform, the linkage box body comprises a gear set, and the gear set rotates to drive the bearing platform to rotate. The bearing platform supports the driving generator and drives the bearing platform to rotate through the communication box body, so that the bearing platform drives the driving generator to rotate, the number of workers is reduced, the strength of the workers is reduced, and maintenance and overhaul work of the driving generator can be completed.

Description

Technical Field

[0001] This invention relates to the field of aircraft generator maintenance and repair technology, and in particular to a maintenance platform for aircraft-driven generators. Background Technology

[0002] The integrated drive generator is the generator used in the current mainstream fleet of aircraft (B737 / A320). It supplies power to the entire aircraft, with a rated voltage of 115V and a frequency of 400Hz, and is located at the tail end of the aircraft's engines. The engine's kinetic energy is transferred to the rotating shaft of the integrated drive generator via the accessory gearbox. Through the principle of electromagnetic induction, the integrated drive generator converts kinetic energy into electrical energy to power the entire aircraft. As a crucial component of the aircraft, the quality of the integrated drive generator directly affects flight safety. The integrated drive generator is a single unit, containing a speed control device and a generator assembly. The speed control device converts the varying engine speed into a constant speed, which is then supplied to the generator, resulting in a constant output frequency. The integrated drive generator is a single, sealed component, operating as a separate sub-component on the aircraft.

[0003] When a fault occurs and the generator needs to be brought in for repair, the entire integrated drive generator needs to be disassembled to repair its internal sub-components. After the generator is fully reassembled and tested, it can be released for shipment and reinstalled on the aircraft. According to the manufacturer's repair manual, when disassembling the integrated drive generator, the rotating shaft and sealing surfaces must be removed beforehand. The generator is then supported by the chuck's flat surface to complete the internal disassembly. Static testing is required after disassembly; repeated disassembly increases the number of static tests, affecting disassembly and assembly efficiency. The integrated drive generator weighs 50-90 kg, and due to its high lubricating oil content and smooth surface, single-person handling or flipping can easily cause injury or damage to components. At least two employees are required to handle the handling and flipping of components, increasing labor intensity. Furthermore, the frequent flipping of the integrated drive generator during repair and maintenance can easily cause scratches and wear. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] In view of this, the present invention provides a maintenance platform for an aircraft drive generator, wherein, in addition to the support platform in the maintenance platform supporting the drive generator, the rotation of the support platform is driven by the connecting box, thereby realizing the rotation of the drive generator by the support platform, reducing the number of workers and reducing the intensity of workers, so as to complete the maintenance and repair work of the drive generator.

[0006] Specifically, the following technical solutions are included: This invention provides a maintenance platform for aircraft-driven generators, the maintenance platform comprising: Support frame; A support platform, wherein the support platform is provided with through holes, and the support platform is configured to support a drive generator; A linkage housing is mounted on the support frame and is rotatably connected to the bearing platform. The linkage housing includes a gear set, and the rotation of the gear set drives the rotation of the bearing platform.

[0007] Optionally, the maintenance platform further includes: An observation component is movably mounted on the support frame, located below the support platform, and configured to observe the appearance of the drive generator.

[0008] Optionally, the observation component includes: magnifier; A reflector is disposed on the outer periphery of the magnifying glass, and the reflector extends from the edge of the magnifying glass toward the supporting platform, and the angle between the reflector and the magnifying glass is an obtuse angle; A connecting rod is fixedly connected to a magnifying glass at one end and hinged to the support frame at the other end. The connecting rod includes a plurality of first rods, and adjacent first rods are hinged to each other.

[0009] Optionally, a first hinge axis is provided between adjacent first rods, and a second hinge axis is provided between the connecting rod and the support frame, with the first hinge axis and the second hinge axis being arranged crosswise.

[0010] Optionally, the support frame includes: a first crossbeam, a second crossbeam, and a connecting beam connecting the first crossbeam and the second crossbeam. The connecting beam is provided with a support beam, and the support beam is provided with the linkage box and the bearing platform. The first crossbeam is provided with a first traveling wheel on the side opposite to the support beam, and the second crossbeam is provided with a support leg on the side opposite to the support beam. The second crossbeam is also provided with a support walking assembly.

[0011] Optionally, the second crossbeam is provided with a mounting bracket, the mounting bracket having a slot, and the supporting walking assembly includes: A first lifting rod has a first handle fixedly provided at one end. The first lifting rod is provided with a moving rod and a first sliding groove, and the moving rod moves within the first sliding groove. The first lifting rod is also provided with a locking block and a second sliding groove, and the locking block moves within the second sliding groove. The locking block is connected to the moving rod via a connecting rod, and the locking block matches the locking groove. The connecting rod is located inside the first lifting rod, and a lifting shaft is provided at the end of the locking block opposite to the connecting rod. At least part of the lifting shaft is located inside the first lifting rod. The second lifting rod passes through the second crossbeam. The second lifting rod is connected to the second traveling wheel via a wheel seat. The end of the second lifting rod away from the second traveling wheel is hinged to the end of the lifting shaft away from the connecting rod. When the locking block is located inside the locking slot, the second walking wheel is in contact with the ground; when the locking block is located outside the locking slot, the supporting leg is in contact with the ground.

[0012] Optionally, the support platform includes a first plate and a second plate connected to each other. The first plate is connected to the linkage housing, and the second plate is configured to support the drive generator. The first plate is provided with multiple positioning holes. The maintenance platform also includes a positioning component, which includes: A connecting frame is fixedly connected to the support frame, and the connecting frame is provided with a connecting hole, the axis of which is parallel to the axis of the positioning hole; A movable pin includes a handrail, a second rod, a third rod, and a pin. The handrail is connected to the second rod. The end of the second rod away from the handrail is hinged to the connecting frame. The third rod is hinged to the connection between the second rod and the handrail. The end of the third rod away from the second rod is hinged to the pin. The pin is configured to move within the connecting hole.

[0013] Optionally, the linkage housing includes: Box body; A gear set is disposed inside the housing and is connected to the support platform via a connecting shaft; A rocker arm, at least part of which is located within the housing, is connected to the gear set. Rotation of the rocker arm drives the gear set to rotate, which in turn drives the support platform to rotate. The rocker arm is configured to move within the housing.

[0014] Optionally, the rocker arm includes a drive lever and a second handle, and a connecting arm connecting the drive lever and the second handle; the gear set includes: The first external bevel gear is mounted on the drive rod; A second external bevel gear is disposed on the drive rod. The second external bevel gear and the first external bevel gear are coaxially disposed, and the diameter of the first external bevel gear is smaller than the diameter of the second external bevel gear. A third external bevel gear is disposed on the connecting shaft, and the third external bevel gear meshes with the first external bevel gear. An internal bevel gear is disposed on the connecting shaft and meshes with the second external bevel gear; The active rod is perpendicular to the connecting shaft, and the distance between the third external bevel gear and the internal bevel gear is greater than the distance between the first external bevel gear and the second external bevel gear.

[0015] Optionally, the maintenance platform further includes: A tool tray, mounted below the support platform via a support frame, is configured to hold the required tools.

[0016] This invention provides a maintenance platform for an aircraft drive generator. The platform includes a support frame, a carrying platform, and a linkage housing. The carrying platform supports the drive generator and has a through hole for the drive generator's rotating shaft and seal. The drive generator's housing is fixedly connected to the carrying platform via a chuck. The carrying platform is rotatably connected to the linkage housing. The drive generator rotates through a gear set within the linkage housing. The rotating shaft is parallel to the axis of the through hole, while the shaft of the carrying platform driving the drive generator is perpendicular to the axis of the through hole. The linkage housing drives the entire carrying platform and the drive generator to rotate, eliminating the need for manual handling and turning, reducing the number of workers and their workload, saving time and effort. The carrying platform's rotation of the drive generator allows for multi-angle observation of leakage on the rotating shaft and seal, improving the test quality of the drive generator and enhancing maintenance efficiency and quality. When the drive generator needs testing, the maintenance platform can be moved to the testing position, avoiding repeated movement of the drive generator, reducing worker workload, and improving worker efficiency.

[0017] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a maintenance platform according to an embodiment of the present invention; Figure 2 This is a schematic diagram of an observation component according to an embodiment of the present invention; Figure 3This is a schematic diagram of a support walking assembly according to an embodiment of the present invention; Figure 4 This is a schematic diagram of a positioning component according to an embodiment of the present invention; Figure 5 This is a schematic diagram of a gear set according to an embodiment of the present invention.

[0020] in, Figures 1 to 5 The correspondence between the reference numerals and component names in the attached drawings is as follows: 100 Maintenance platform, 110 Support frame, 111 First crossbeam, 112 Second crossbeam, 113 Connecting beam, 114 Support beam, 115 First traveling wheel, 116 Support leg, 117 Card seat, 120 Load-bearing platform, 121 First plate, 122 Second plate, 123 Reinforcing plate, 130 Linkage box, 131 First external bevel gear, 132 Second external bevel gear, 133 Third external bevel gear, 134 Internal bevel gear, 135 Connecting shaft, 140 Observation assembly, 141 Magnifying glass, 142 Reflector, 143 Connecting rod, 1431 First rod, 143 2 First hinge shaft, 1433 Second hinge shaft, 150 Positioning assembly, 151 Connecting frame, 152 Connecting hole, 153 Handrail, 154 Second rod, 155 Third rod, 156 Pin, 160 Support walking assembly, 161 First lifting rod, 162 First handle, 163 First slide groove, 164 Moving rod, 165 Second slide groove, 166 Locking block, 167 Linking rod, 168 Lifting shaft, 169 Second lifting rod, 1610 Second walking wheel, 170 Tool tray, 180 Rocker arm, 181 Active rod, 182 Second handle, 183 Connecting arm. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Before providing a further detailed description of the embodiments of the present invention, the directional terms used in the embodiments of the present invention, such as "upper part", "lower part" and "side part", are not intended to limit the scope of protection of the present invention.

[0023] To make the technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0024] like Figures 1 to 5 As shown, one embodiment of the present invention provides a maintenance platform for an aircraft-driven generator, the maintenance platform 100 comprising: Support frame 110; The support platform 120 has through holes and is configured to support the drive generator. The linkage housing 130 is mounted on the support frame 110. The linkage housing 120 is rotatably connected to the bearing platform 120. The linkage housing 130 includes a gear set, and the rotation of the gear set drives the rotation of the bearing platform 120.

[0025] The maintenance platform 100 includes a support frame 110, a bearing platform 120, and a linkage housing 130. The bearing platform supports the drive generator. The bearing platform 120 has a through hole for the drive generator's rotating shaft to be exposed and sealed. The drive generator's housing is fixedly connected to the bearing platform 120 via a chuck. The bearing platform 120 is rotatably connected to the linkage housing 130. The drive generator is rotated by the linkage of the gear set inside the linkage housing 130. The rotating shaft is parallel to the axis of the through hole, and the rotating shaft of the bearing platform 120 that drives the drive generator is perpendicular to the axis of the through hole. The linkage housing 130 drives the entire support platform 120 and the drive generator on it to rotate, eliminating the need for manual handling and turning, reducing the number of workers and their workload, and saving time and effort. The rotation of the drive motor driven by the support platform 120 allows for multi-angle observation of leakage on the rotating shaft and sealing surface, improving the testing quality of the drive generator, as well as the efficiency and quality of its maintenance and repair. When the drive generator needs to be tested, it can be moved to the testing position via the maintenance platform 100, avoiding repeated movement of the drive generator, reducing the labor intensity of workers, and improving their work efficiency.

[0026] Specifically, the maintenance platform 100 of this application can test whether the sealing surface of the drive generator is leaking. There may be leakage at non-vertical angles. By driving the load-bearing platform 120 and the drive generator on it to rotate together through the linkage box 130, the leakage situation at various angles can be observed, thus improving the test quality of leakage at the sealing surface of the drive generator. Since the drive generator is large in size and heavy in weight, it is not easy to move or turn over. With the assistance of the maintenance platform 100, one worker can complete the movement and turning of the drive generator, effectively saving manpower and time and effort.

[0027] In one feasible implementation, the maintenance platform 100 further includes: The observation component 140 is movably mounted on the support frame 110 and is located below the support platform 120. The observation component 140 is configured to observe the appearance of the drive generator.

[0028] By observing the configuration of the component 140, when the rotating shaft of the driving generator is facing downwards, the leakage situation can be observed through the component 140. When a detailed inspection of the sealing surface is required, a magnifying glass can be used for observation, thereby improving the reliability of the observation.

[0029] In one feasible implementation, such as Figure 2 As shown, the observation component 140 includes: Magnifying glass 141; A reflector 142 is disposed on the outer periphery of a magnifying glass 141, and the reflector 142 extends from the edge of the magnifying glass 141 toward the support platform 120, and the angle between the reflector 142 and the magnifying glass 141 is an obtuse angle. The connecting rod 143 is fixedly connected to the magnifying glass 141 at one end and hinged to the support frame 110 at the other end. The connecting rod 143 includes a plurality of first rods 1431, and adjacent first rods 1431 are hinged to each other.

[0030] In ordinary observation, some angles and positions that are difficult to observe can be observed through the reflector 142; when detailed observation is required, it can be observed through the magnifying glass 141. At this time, a reflector 142 is set around the magnifying glass 142 to enhance the lighting effect. By reflecting external light into the magnifying glass 141, the brightness and clarity during observation are improved, further enhancing the efficiency of magnified observation.

[0031] It should be noted that the observation component 140 is typically positioned between the support platform 120 and the tool tray 170. One end of the connecting rod 143 is connected to the magnifying glass 141, while the other end is hinged to the support beam 114 of the support frame 110. This means the connecting rod 143 can drive the observation component 140 to rotate within a first plane between the support platform 120 and the tool tray 170, allowing observation of leakage and cracking of the drive generator corresponding to this first plane. The connecting rod 143 may include multiple hinged first rods 1431. This hinged arrangement of multiple first rods 1431 expands the observation range of the magnifying glass 141 and the reflector 142, enabling the magnifying glass 141 to observe the drive generator within a second plane, which is angled to the first plane.

[0032] For example, this application uses two or three first rods 1431 connected to each other, which expands the observation range of the observation component 140 while avoiding an overly complex installation structure and improving the assembly efficiency of the maintenance platform.

[0033] In one feasible implementation, a first hinge shaft 1432 is provided between adjacent first rods 1431, and a second hinge shaft 1433 is provided between connecting rod 143 and support frame 110, with the first hinge shaft 1432 and the second hinge shaft 1433 arranged crosswise.

[0034] Since the second plane is angled relative to the first plane, the first hinge axis 1432 formed between adjacent first rods 1431 is... Figure 1 In the direction from inside to outside, the second hinge shaft 1433 formed between the connecting rod 143 and the support frame 110 is... Figure 1 The vertical direction may not be perfectly vertical; it may be slightly tilted, but this does not affect the basic vertical setting of the first hinge axis 1432 and the second hinge axis 1433, i.e., their cross-setting.

[0035] In one feasible implementation, such as Figure 1 As shown, the support frame 110 includes: a first crossbeam 111, a second crossbeam 112, and a connecting beam 113 connecting the first crossbeam 111 and the second crossbeam 112. A support beam 114 is provided on the connecting beam 113. A linkage box 130 and a bearing platform 120 are provided on the support beam 114. A first traveling wheel 115 is provided on the side of the first crossbeam 111 away from the support beam 114. A support leg 116 is provided on the side of the second crossbeam 112 away from the support beam 114. A support traveling assembly 160 is also provided on the second crossbeam 112.

[0036] The support frame 110, through the arrangement of the first crossbeam 111 and the second crossbeam 112, provides stability through support and also offers an effective placement position for the maintenance platform 100 to move and be fixed in a certain location, ensuring the stability of the maintenance platform 100. The connecting beam 113 further improves the stability of the maintenance platform 100's movement and fixation, and also provides a placement carrier for the support beam 114, improving the overall feasibility of the support frame 110. The connecting shaft 135 of the linkage housing 130 extends out of the support beam 114 and connects to the bearing platform 120. At this time, multiple protrusions or grooves can be provided on the connecting shaft 135, and correspondingly, grooves or protrusions are provided in the holes on the bearing platform 120. Through the matching of multiple grooves and protrusions, the bearing platform 120 and the linkage housing 130 can be detachably connected.

[0037] For example, the support frame 110 of this application can be made of stainless steel, which can ensure that the load-bearing weight reaches 250kg, while also preventing the support frame 110 from rusting, thereby improving the service life and load-bearing weight stability and reliability of the support frame 110.

[0038] It should be noted that when the first traveling wheel 115 and the support leg 116 are on the ground at the same time, the maintenance platform 100 is in a fixed position; when the support traveling component 160 and the first traveling wheel 115 are on the ground, the maintenance platform 100 is in a movable state, which improves the flexibility of the maintenance platform 100.

[0039] In one feasible implementation, such as Figure 3 As shown, the second crossbeam 112 is provided with a mounting bracket 117, and the mounting bracket 117 is provided with a slot, supporting the walking assembly 160 including: A first lifting rod 161 has a first handle 162 fixedly provided at one end. A moving rod 164 and a first sliding groove 163 are passed through the first lifting rod 161. The moving rod 164 moves within the first sliding groove 163. A locking block 166 and a second sliding groove 165 are also passed through the first lifting rod 161. The locking block 166 moves within the second sliding groove 165. The locking block 166 is connected to the moving rod 164 through a connecting rod 167. The locking block 166 matches the locking groove. The connecting rod 167 is located inside the first lifting rod 161. A lifting shaft 168 is provided at the end of the locking block 166 away from the connecting rod 167. At least part of the lifting shaft 168 is located inside the first lifting rod 161. The second lifting rod 169 passes through the second crossbeam 112. The second lifting rod 169 is connected to the second traveling wheel 1610 through a wheel seat. The end of the second lifting rod 169 away from the second traveling wheel 1610 is hinged to the end of the lifting shaft 168 away from the connecting rod 167. When the locking block 166 is inside the slot, the second traveling wheel 1610 is in contact with the ground; when the locking block 166 is outside the slot, the support leg 116 is in contact with the ground.

[0040] The first lifting rod 161 is hollow, facilitating the placement of subsequent components. A first handle 162 is fixedly connected to one end of the first lifting rod 161, allowing operators to apply force when operating the support and walking assembly 160. A movable rod 164 is positioned near the first handle 162 relative to the locking block 166. Operators hold the first handle 162 and then hook the movable rod 164 within the first slide groove 163, moving it towards the first handle 162. This, through the connecting rod 167 connected to the movable rod 164, sequentially moves the locking block 166 and the lifting shaft 168 towards the first handle 162. The locking block 166 is limited by the second slide groove 165. The lifting shaft 168 moves upward within the hollow, thereby moving the second lifting rod 169 and the second walking wheel 1610, which are hinged to it, upward. This causes the second walking wheel 1610 to move away from the ground, allowing the support leg 116 to contact the ground. This ensures the maintenance platform 100 is in a fixed position and stably supported, without affecting the inspection and observation of the drive generator. Then, the locking block 166 moves out of the slot and rotates toward the support beam 114. Then, the first lifting rod 161 is placed on the connecting beam 113. At this time, the locking block 166 is always located at the end of the second slide groove 165 near the first handle 162, which is limited by the edge of the locking seat 117 facing the support beam 114. This makes the second lifting rod 169 and the second traveling wheel 1610 in a lifting state. After the first lifting rod 161 is lowered, the lifting shaft 168 and the second lifting rod 169 are set at an angle under the action of hinge, which further makes the second traveling wheel 1610 away from the ground, improving the reliability and stability of the support leg 116.

[0041] Understandably, the second crossbeam 112 has a passageway to facilitate the movement of the second lifting rod 169 within it. Simultaneously, when the first lifting rod 161 is lowered and the lifting shaft 168 is hinged at an angle to the second lifting rod 169, it provides support and limits the second lifting rod 169, improving the operational feasibility of the supporting walking assembly 160. The mounting base 117 consists of a pair of parallel flat plates, with both the first and second lifting rods 161 located within them. This provides rotational space for the lowering of the first lifting rod 161 and enhances the balance and stability of its support. Corresponding slots are provided on the pair of flat plates, with the locking block 166 fitting into the slots with a clearance fit. A slope is provided on the side of the pair of flat plates facing the support beam 114 to facilitate smoother movement of the locking block 166, avoiding jamming caused by right angles and ensuring the smoothness of the first lifting rod 161's lowering.

[0042] It should be noted that when the maintenance platform 100 needs to be moved, the first lifting rod 161 can be rotated away from the support beam 114 until the locking block 166 comes above the slot. Under the action of gravity (or when the worker releases the lever), the locking block 166 engages with the slot. Then, the locking block 166 is positioned at the lower end of the second slide rail 165, and the moving rod 164 is positioned at the lower end of the first slide rail 163. This causes the lifting shaft 168 and the second lifting rod 169 to move away from the first handle 162, making the second traveling wheel 1610 contact the ground. The support leg 116 is then lifted, allowing the maintenance platform 100 to move to the desired position. One second traveling wheel 1610 and two first traveling wheels 115 form a triangular support, improving the stability of movement.

[0043] For example, the first travel wheel 115 and the second travel wheel 1610 are both omnidirectional wheels, and at least one omnidirectional wheel can be an omnidirectional wheel equipped with a brake module, which can prevent the movement of the omnidirectional wheel when temporarily parking.

[0044] In one feasible implementation, such as Figure 4 As shown, the support platform 120 includes a first plate 121 and a second plate 122 connected to each other. The first plate 121 is connected to the linkage housing 130, and the second plate 122 is configured to support the drive generator. The first plate 121 is provided with multiple positioning holes. The maintenance platform 100 also includes a positioning assembly 150, which includes: The connecting frame 151 is fixedly connected to the support frame 110. The connecting frame 151 is provided with a connecting hole 152, and the axis of the connecting hole 152 is set parallel to the axis of the positioning hole. The movable pin includes a handrail 153, a second rod 154, a third rod 155, and a pin 156. The handrail 153 is connected to the second rod 151. The end of the second rod 154 away from the handrail 153 is hinged to the connecting frame 151. The third rod 155 is hinged to the connection between the second rod 154 and the handrail 153. The end of the third rod 155 away from the second rod 154 is hinged to the pin 156. The pin 156 is configured to move within the connecting hole 152.

[0045] The first plate 121 and the second plate 122 of the support platform 120 are typically arranged vertically. The first plate 121 has a hole for connecting the connecting shaft 135 of the linkage housing 130. The rotation of the gears inside the linkage housing 130 drives the rotation of the generator on the entire support platform 120 and the second plate 122, enabling the generator to rotate at various angles. A reinforcing plate 123 is usually provided at the connection between the first plate 121 and the second plate 122. The reinforcing plate 123 improves the load-bearing capacity of the support platform 120, thereby supporting and rotating the generator. Different chucks are used depending on the generator. After the chuck engages with the generator, it is then connected to the second plate 122. The chuck and the second plate 122 have multiple holes through which screws pass, connecting the chuck to the second plate 122, i.e., the support platform 120, and thus connecting the support platform 120 to the generator. The drive generator housing and chuck can be bolted together, or a chuck matching the shape of the drive generator housing can be used to connect the chuck and the drive generator. By simply changing different chucks, the support platform 120 can support and connect different drive generators.

[0046] It should be noted that when the bearing platform 120 drives the drive generator to rotate, and when it needs to be observed and repaired after rotating to a certain angle, the rotation angle of the bearing platform 120 can be positioned by the positioning component 150, so that the drive generator is fixed at that angle. Usually, ten positioning holes are set on the circumference of the first plate 121 with the rotation axis of the bearing platform 120 as the center. Generally, the repair of the drive generator can be completed by observing and inspecting from ten angles. The included angle between the center lines of two adjacent positioning holes is 36°. By inserting the positioning component 150 into the positioning hole, the angle of the bearing platform 120 can be fixed.

[0047] Specifically, by pulling the handrail 153 to move away from the connecting frame 151, the second rod 154 rotates with the connecting frame 151, and the angle between the third rod 155 and the support frame 151 increases. That is, the end of the third rod 155 that is hinged to the second rod 154 moves away from the support frame 151, and the pin 156 moves in the connecting hole 152 towards the second rod 154. This shortens the length of the pin 156 extending out of the support frame 151, disengages the pin 156 from the positioning hole, and allows the bearing platform 120 to rotate freely. When it is necessary to fix the support platform 120, the handrail 153 is pushed to move closer to the connecting frame 151. Then, the ends of the second rod 154 and the third rod 155 near the handrail 153 move towards the support frame 151. That is, the angle between the second rod 154 and the third rod 155 and the support frame 150 becomes smaller. This pushes the pin 156 to move outward through the connecting hole 152 to the outside of the support frame 151, increasing the length of the pin 156 protruding from the support frame 151. This allows the pin 156 to be inserted into the positioning hole, thereby fixing the rotation angle of the support platform 120.

[0048] It is understandable that the connecting frame 151 of the positioning component 150 is fixed on the support beam 114, so that the positioning component 150 can approach the first plate 121 of the bearing platform 120, thereby realizing the effective connection between the pin 156 on the positioning component 150 and the positioning hole on the first plate 121.

[0049] In one feasible implementation, the linkage housing 130 includes: Box body; The gear set is installed inside the housing and is connected to the support platform 120 via the connecting shaft 135. The rocker arm 180, at least part of which is located inside the housing, is connected to the gear set. When the rocker arm 180 rotates, it drives the gear set to rotate, and the gear set drives the support platform 120 to rotate. The joystick 180 is configured to move within the housing.

[0050] The box body is fixed on the support beam 114. The box body and the bearing platform 120 are located on both sides of the support beam 114. The gear set is set inside the box body, and the connecting shaft 135 extends out of the box body after connecting part of the gear set. The connecting shaft 135 extending out of the box body is plugged into the first plate 121 of the bearing platform 120, or it can be directly fixed. The plugged connection can also be disassembled, making it easier to disassemble the linkage box body 130 and the bearing platform 120 separately.

[0051] It should be noted that the gear set has two different transmission ratios, which allows the two different transmission ratios to have different speeds, thus enabling the speed adjustment of the bearing platform 120.

[0052] In one feasible implementation, such as Figure 5 As shown, the joystick 180 includes a drive lever 181 and a second handle 182, and a connecting arm 183 connecting the drive lever 181 and the second handle 182. The gear set includes: The first external bevel gear 131 is mounted on the drive rod 181; The second external bevel gear 132 is mounted on the drive rod 181. The second external bevel gear 132 and the first external bevel gear 131 are coaxially mounted, and the diameter of the first external bevel gear 131 is smaller than the diameter of the second external bevel gear 132. The third external bevel gear 133 is disposed on the connecting shaft 135, and the third external bevel gear 133 meshes with the first external bevel gear 131; An inner bevel gear 134 is mounted on a connecting shaft 135 and meshes with a second outer bevel gear 132. The drive rod 181 is perpendicular to the connecting shaft 135, and the distance between the third outer bevel gear 133 and the inner bevel gear 134 is greater than the distance between the first outer bevel gear 131 and the second outer bevel gear 132.

[0053] It should be noted that the drive lever 181, connecting arm 183, and second handle 182 are Z-shaped. Rotation of the second handle 182 drives the drive lever 181 to rotate, which in turn drives the first external bevel gear 131 and the second external bevel gear 132 on the drive lever 181 to rotate. Since the distance between the third external bevel gear 133 and the inner bevel gear 134 is greater than the distance between the first external bevel gear 131 and the second external bevel gear 132, when the rocker arm 180 is pushed into the housing, the first external bevel gear 131 and the third external bevel gear 133 mesh, and simultaneously... The second external bevel gear 132 separates from the internal bevel gear 134. At this time, only the transmission ratio of the first external bevel gear 131 and the third external bevel gear 133 is used for transmission. In this application, the diameter of the first external bevel gear 131 is larger than the diameter of the third external bevel gear 133. Therefore, the large gear drives the small gear, and the connecting shaft 135 connected to the third external bevel gear 133 rotates faster, realizing the rapid rotation of the bearing platform 120. At the same time, the meshing of the first external bevel gear 131 and the third external bevel gear 133 also has a certain limiting effect on the movement of the rocker arm 180 into the housing. When the rocker arm 180 is pulled outward from the housing body, the second external bevel gear 132 meshes with the internal bevel gear 134, while the first external bevel gear 131 and the third external bevel gear 133 disengage. At this time, only the transmission ratio of the second external bevel gear 132 and the internal bevel gear 134 is used for transmission. In this application, the diameter of the second external bevel gear 132 is larger than the diameter of the first external bevel gear 131, while the diameter of the second external bevel gear 132 is smaller than the diameter of the internal bevel gear 134. This results in a smaller gear driving a larger gear, causing the connecting shaft 135 connected to the internal bevel gear 134 to rotate more slowly, thus achieving a slower rotation of the support platform 120. Simultaneously, the meshing of the second external bevel gear 132 and the internal bevel gear 134 also limits the movement of the rocker arm 180 outward from the housing body; that is, the rocker arm 180 can only reciprocate between the third external bevel gear 133 and the internal bevel gear 134. This allows for different rotational speeds of the support platform 120, improving the applicability of the maintenance platform 100.

[0054] In other words, the rocker arm 180 can adjust the speed of the connecting shaft 135 at different positions within the housing, thereby enabling the adjustment of the speed of the bearing platform 100. When the drive generator needs to rotate quickly, the rocker arm 180 is pushed further into the housing. When the drive generator needs to rotate slowly, the rocker arm 180 is pulled slightly outward from the housing, improving the flexibility of the bearing platform 100's rotation.

[0055] Understandably, the first external bevel gear 131 and the second external bevel gear 132 are fixed to the drive rod 181, and the third external bevel gear 133 and the internal bevel gear 134 are fixed to the connecting shaft 135. The connecting shaft 135 is rotatably connected to the housing body. Thus, the drive rod 180 drives the connecting shaft 135 to rotate through the gear set, thereby driving the rotation of the bearing platform 120 on the connecting shaft 135. The larger the gear, the more teeth it has, and thus different speed ratios can be used to achieve changes in speed. A slide rail can be provided on the housing body, and a slider can be provided on the drive rod 181. The slider and the slide rail cooperate to ensure the smooth movement of the drive rod 181 on the housing body. Lubricating oil can be added to avoid wear caused by reciprocating movement and to improve the service life of the linkage housing 130.

[0056] In one feasible implementation, the maintenance platform 100 further includes: Tool tray 170 is positioned below support platform 130 via a support frame and is configured to hold the required tools.

[0057] The maintenance platform 100 is also equipped with a tool tray 170, which can hold commonly used tools and / or fixtures for convenient use by staff and to save space. The tool tray 170 can be fixed to the support beam 114 and the first crossbeam 111 via a support frame. The tool tray 170 can also be configured to move on the support beam 114. A slide rail can be provided on the support beam 114, and an electric slider can be installed on the tool tray 170. The position of the electric slider on the slide rail is controlled by a circuit to change the height of the tool tray 170 to suit different working positions. Alternatively, a pulley can be installed inside the support beam 114, and a crank can be installed outside the support beam 114. A steel wire rope is wound around the crank, and the free end of the steel wire rope passes around the pulley and connects to the tool tray 170. The length of the steel wire rope outside is controlled by rotating the crank, thereby controlling the height of the tool tray 170. At this time, a limit block can be set on the tool tray 170, and a limit groove is set on the support beam 114. This allows the tool tray 170 to move within the limit groove, preventing the swaying of the steel wire rope from affecting the stability of the tool tray 170's movement.

[0058] Specifically, if a single repair of the drive generator fails to completely resolve the fault, a secondary repair is required. Normally, this involves removing the rotating shaft and seal, flipping the drive generator over, and placing it on a workbench. After the secondary repair, the entire drive generator needs to be flipped over again, and the rotating shaft and seal reinstalled. The rotating shaft and seal are crucial components for the drive generator's operation, requiring high precision in their mating parts; repeated disassembly and reassembly can easily cause scratches and wear. After the secondary installation, the drive generator needs to be moved to a mobile platform for transportation and static sealing testing, consuming significant manpower. Currently, when testing for leakage at the rotating shaft seal surface, the testing method only allows placing the drive generator on the workbench and observing only a few lateral placement points. However, in actual work, leakage may occur even at non-perpendicular angles. There is currently no method for observing leakage from all angles, nor is there a method for detailed inspection of critical locations, affecting maintenance safety.

[0059] Using the maintenance platform 100 of this application, when the drive generator is under maintenance or undergoing secondary repair, the drive generator is removed from the test bench and installed onto the maintenance platform 100 to complete the repair. The bearing platform 120 is rotated by the rocker arm 180, making the second plate 122 substantially parallel to the flange surface of the drive generator, facilitating the movement of the drive generator onto the second plate 122. The through-hole on the second plate 122 is larger than the dimensions of the rotating shaft and the seal, facilitating observation and disassembly for inspection and maintenance. The second plate 122 is connected or snapped to the flange of the drive generator via a chuck, and the second plate 122 and the chuck are fixedly connected by multiple bolts, enabling the rotation of the bearing platform 120 to drive the rotation of the drive generator. Rotate the rocker arm 180 again to make the rotation axis of the drive generator turn downward. This rotation can be done slowly, that is, the rocker arm 180 is pulled outward. The second external bevel gear 132 meshes with the internal bevel gear 134, making the rotation of the support platform 120 more stable. When the drive generator rotates to the required position, the pin 156 of the positioning component 150 is inserted into the positioning hole of the first plate 121 to achieve the positioning of the support platform 120 and the drive generator. The tool tray 170 carries the required tools. At this time, the moving rod 164 on the first lifting rod 161 of the supporting walking assembly 160 is lifted upward, which in turn drives the connecting rod 167, the locking block 166, the lifting shaft 168 and the second lifting rod 169 to move upward. After the first lifting rod 161 is lowered, the second walking wheel 1610 moves upward and away from the ground. At this time, the support leg 116 contacts the ground, realizing the stable support of the maintenance platform 100. When it is necessary to move the maintenance platform 100, the first lifting rod 161 is operated in reverse, so that the locking block 166 moves back into the slot of the card seat 117. At this time, the moving rod 164, the connecting rod 167, the locking block 166, the lifting shaft 168 and the second lifting rod 169 move downward, so that the second walking wheel 1610 contacts the ground. At this time, the support leg 117 leaves the ground, realizing the movement of the maintenance platform 100.

[0060] After the drive generator is repaired, the easily worn rotating shaft and seal are suspended in the air, i.e., inside the through hole, without point-to-surface contact with any object, reducing wear caused by the disassembly and assembly of the rotating shaft and seal during maintenance. Using the maintenance platform 100 of this application also reduces the number of static tests. Specifically, during drive generator repair (which may or may not require shaft disassembly), static tests are necessary if the shaft is disassembled. If the drive generator is repaired on a table instead of on the maintenance platform 100 of this application, the rotating shaft cannot stand upright on the table (requiring shaft disassembly), leading to more shaft disassembly and thus more static tests. This application reduces the occurrence of static tests, thereby improving maintenance efficiency. Furthermore, maintenance personnel also need to perform some tests during repairs; the maintenance platform 100 allows for direct movement of the drive generator, avoiding wear caused by manual reciprocating handling. The drive generator can be rotated within a 360° range by rotating the rocker arm 180, avoiding the difficulty of flipping it on a tabletop. During the inspection, the presence of oil leaks can be observed through the magnifying glass 141 and the reflector 142, which improves the reliability and convenience of observation. After the repair is completed, the drive generator can be moved to the test platform. The repair platform 100 of this application can better connect with the test platform. By adjusting the angle of the drive generator with the rocker arm 180 so that the lifting point is upward, the connection between the drive generator and the test platform can be achieved by rotating the overhead crane and the support platform 120, reducing manual handling and dragging, and reducing the number of workers and the labor intensity.

[0061] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "a plurality" refers to two or more unless otherwise expressly defined.

[0062] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only.

[0063] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A maintenance platform for aircraft-driven generators, characterized in that, The maintenance platform includes: Support frame; A support platform, wherein the support platform is provided with through holes, and the support platform is configured to support a drive generator; A linkage housing is mounted on the support frame and is rotatably connected to the bearing platform. The linkage housing includes a gear set, and the rotation of the gear set drives the rotation of the bearing platform.

2. The maintenance platform for aircraft-driven generators according to claim 1, characterized in that, The maintenance platform also includes: An observation component is movably mounted on the support frame, located below the support platform, and configured to observe the appearance of the drive generator.

3. The maintenance platform for aircraft-driven generators according to claim 2, characterized in that, The observation component includes: magnifier; A reflector is disposed on the outer periphery of the magnifying glass, and the reflector extends from the edge of the magnifying glass toward the supporting platform, and the angle between the reflector and the magnifying glass is an obtuse angle; A connecting rod is fixedly connected to a magnifying glass at one end and hinged to the support frame at the other end. The connecting rod includes a plurality of first rods, and adjacent first rods are hinged to each other.

4. The maintenance platform for aircraft-driven generators according to claim 3, characterized in that, A first hinge shaft is provided between adjacent first rods, and a second hinge shaft is provided between the connecting rod and the support frame. The first hinge shaft and the second hinge shaft are arranged crosswise.

5. The maintenance platform for aircraft-driven generators according to claim 1, characterized in that, The support frame includes: a first crossbeam, a second crossbeam, and a connecting beam connecting the first crossbeam and the second crossbeam. The connecting beam is provided with a support beam, and the support beam is provided with the linkage box and the bearing platform. The first crossbeam is provided with a first traveling wheel on the side away from the support beam, and the second crossbeam is provided with a support leg on the side away from the support beam. The second crossbeam is also provided with a support walking component.

6. The maintenance platform for aircraft-driven generators according to claim 5, characterized in that, The second crossbeam is provided with a mounting bracket, and the mounting bracket is provided with a slot. The supporting walking assembly includes: A first lifting rod has a first handle fixedly provided at one end. The first lifting rod is provided with a moving rod and a first sliding groove, and the moving rod moves within the first sliding groove. The first lifting rod is also provided with a locking block and a second sliding groove, and the locking block moves within the second sliding groove. The locking block is connected to the moving rod via a connecting rod, and the locking block matches the locking groove. The connecting rod is located inside the first lifting rod, and a lifting shaft is provided at the end of the locking block opposite to the connecting rod. At least part of the lifting shaft is located inside the first lifting rod. The second lifting rod passes through the second crossbeam. The second lifting rod is connected to the second traveling wheel via a wheel seat. The end of the second lifting rod away from the second traveling wheel is hinged to the end of the lifting shaft away from the connecting rod. When the locking block is located inside the locking slot, the second walking wheel is in contact with the ground; when the locking block is located outside the locking slot, the supporting leg is in contact with the ground.

7. The maintenance platform for aircraft-driven generators according to claim 5, characterized in that, The support platform includes a first plate and a second plate connected to each other. The first plate is connected to the linkage housing, and the second plate is configured to support the drive generator. The first plate is provided with multiple positioning holes. The maintenance platform also includes a positioning component, which includes: A connecting frame is fixedly connected to the support frame, and the connecting frame is provided with a connecting hole, the axis of which is parallel to the axis of the positioning hole; A movable pin includes a handrail, a second rod, a third rod, and a pin. The handrail is connected to the second rod. The end of the second rod away from the handrail is hinged to the connecting frame. The third rod is hinged to the connection between the second rod and the handrail. The end of the third rod away from the second rod is hinged to the pin. The pin is configured to move within the connecting hole.

8. The maintenance platform for aircraft-driven generators according to claim 1, characterized in that, The linkage housing includes: Box body; A gear set is disposed inside the housing and is connected to the support platform via a connecting shaft; A rocker arm, at least part of which is located within the housing, is connected to the gear set. Rotation of the rocker arm drives the gear set to rotate, which in turn drives the support platform to rotate. The rocker arm is configured to move within the housing.

9. The maintenance platform for aircraft-driven generators according to claim 8, characterized in that, The rocker arm includes a drive lever and a second handle, and a connecting arm connecting the drive lever and the second handle; the gear set includes: The first external bevel gear is mounted on the drive rod; A second external bevel gear is disposed on the drive rod. The second external bevel gear and the first external bevel gear are coaxially disposed, and the diameter of the first external bevel gear is smaller than the diameter of the second external bevel gear. A third external bevel gear is disposed on the connecting shaft, and the third external bevel gear meshes with the first external bevel gear. An internal bevel gear is disposed on the connecting shaft and meshes with the second external bevel gear; The active rod is perpendicular to the connecting shaft, and the distance between the third external bevel gear and the internal bevel gear is greater than the distance between the first external bevel gear and the second external bevel gear.

10. The maintenance platform for an aircraft-driven generator according to any one of claims 1 to 9, characterized in that, The maintenance platform also includes: A tool tray, mounted below the support platform via a support frame, is configured to hold the required tools.

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