Aircraft maintenance working ladder power traction device

Abstract

The utility model discloses a power traction device for an aircraft maintenance working ladder, which belongs to the field of power moving devices and comprises a tractor, a lifting mechanism and a hook mechanism, the lifting mechanism is mounted on the tractor, the tractor is used for driving the lifting mechanism to move, the hook mechanism comprises a connecting seat and a locking piece, one end of the connecting seat is connected with the lifting mechanism, and the other end of the connecting seat is connected with the locking piece. The lifting mechanism is used for driving the connecting seat to lift, the other end of the connecting seat is provided with a hook groove into which a bottom cross beam of the working ladder extends, the locking piece is movably mounted at the other end of the connecting seat, and the locking piece is used for limiting the bottom cross beam of the working ladder in the hook groove. The power traction device for the aircraft maintenance working ladder can save manpower and material resources, can be matched with bottom cross beams of the working ladder with different heights and bottom cross beams of the working ladder with different thicknesses, can be smoothly connected with large, medium and small working ladders, and effectively saves the cost for purchasing multiple sets of working ladders.

Description

Technical Field

[0001] This utility model relates to the field of powered mobile device technology, and in particular to a powered traction device for an aircraft maintenance work ladder. Background Technology

[0002] With the rapid development of my country's aviation industry, various aircraft models have begun mass production. As production increases, the requirements for aircraft maintenance tools (especially aircraft maintenance ladders) in terms of structure, operation, and safety are becoming increasingly stringent. Aircraft ladders are ground support equipment used to provide ground services for aircraft and play a vital role in aircraft maintenance and other operations. Aircraft ladders come in various types, but most are manually operated, resulting in high labor costs. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a power traction device for an aircraft maintenance work ladder. The connecting seat in the hook mechanism can be connected to the bottom crossbeam of the work ladder and then locked with a locking device. The lifting mechanism drives the hook mechanism to rise and fall, so that the bottom crossbeam of the work ladder can be easily engaged into the hook groove of the connecting seat. The traction vehicle drives the lifting mechanism to move, thereby pulling the work ladder to move, which can save manpower and material resources.

[0004] A powered traction device for an aircraft maintenance work ladder according to an embodiment of the present utility model includes:

[0005] Tractor;

[0006] A lifting mechanism is installed on the tractor vehicle, which is used to move the lifting mechanism.

[0007] The hook mechanism includes a connecting seat and a locking member. One end of the connecting seat is connected to the lifting mechanism, which is used to drive the connecting seat to rise and fall. The other end of the connecting seat is provided with a hook groove for the bottom crossbeam of the working ladder to extend into. The locking member is movably installed on the other end of the connecting seat and is used to limit the bottom crossbeam of the working ladder within the hook groove.

[0008] A powered traction device for an aircraft maintenance ladder according to an embodiment of the present invention has at least the following beneficial effects:

[0009] The connecting seat connects to the bottom crossbeam of the work ladder, and the locking mechanism secures the bottom crossbeam into the hook slot, ensuring a tight connection between the work ladder and the connecting seat. The lifting mechanism raises and lowers the hook mechanism, allowing the bottom crossbeam of the work ladder to engage with the hook slot of the connecting seat. The tractor moves the lifting mechanism, thereby pulling the work ladder, saving manpower and resources.

[0010] The lifting mechanism can drive the connecting seat to rise and fall, allowing the device to be adapted to bottom crossbeams of different heights on the work ladder. The locking part is movably connected to the connecting seat, allowing the hook mechanism to be adapted to bottom crossbeams of different thicknesses on the work ladder. It has great adaptability and can be smoothly connected to work ladders of all sizes, effectively saving the cost of purchasing multiple sets.

[0011] According to some embodiments of the present invention, the locking component includes a cover plate, a locking screw, and a locking nut. The locking screw is installed on the connecting seat near the hook groove. The cover plate is provided with a through hole for the locking screw to pass through. The locking nut is threadedly connected to the locking screw. The cover plate is located above the hook groove, and the locking nut abuts against the side of the cover plate away from the connecting seat.

[0012] According to some embodiments of the present invention, the lifting mechanism includes a lifting drive assembly, a lifting screw, a lifting nut, a lifting connector, a lifting slider, and a lifting guide rail. The lifting screw is rotatably connected to the tractor vehicle, the lifting drive assembly is connected to the lifting screw, and the lifting drive assembly is used to drive the lifting screw to rotate. The lifting nut is threadedly connected to the lifting screw. The lifting guide rail is installed on the tractor vehicle, the lifting slider is slidably connected to the lifting guide rail, and the lifting connector connects the lifting nut, the lifting slider, and the connecting seat.

[0013] According to some embodiments of the present invention, the lifting drive assembly includes a handwheel.

[0014] According to some embodiments of the present invention, the lifting connector is hinged to the connecting seat and the axial direction of the hinge axis is vertical.

[0015] According to some embodiments of the present invention, the lifting mechanism further includes a ratchet assembly, which includes an outer ratchet, a pawl, and an elastic element. The ratchet assembly is used to lock the lifting screw so that the lifting connector will not descend due to gravity. The outer ratchet is mounted on the lifting screw, the middle part of the pawl is hinged to the tractor, and the elastic element connects the pawl and the tractor. The elastic element is used to drive one end of the pawl to extend into the tooth groove of the outer ratchet.

[0016] According to some embodiments of this utility model, the lifting mechanism is located behind the tractor in the direction of travel, a crash barrier is provided in front of the tractor in the direction of travel, a three-color light is provided above the tractor, the three-color light is configured to emit an alarm light signal when the crash barrier touches a foreign object, and a horn is provided inside the tractor, the horn is configured to emit an alarm sound signal when the crash barrier touches a foreign object.

[0017] According to some embodiments of this utility model, the tractor is provided with a traveling wheel, a drive motor, a first directional wheel and a second directional wheel below it. The drive motor is installed at the front of the tractor and is connected to the traveling wheel for transmission. The drive motor is used to drive the traveling wheel to rotate so as to move the tractor. The first directional wheel and the second directional wheel are installed at the rear of the tractor and are spaced apart along the width direction of the tractor.

[0018] According to some embodiments of this utility model, the tractor is equipped with a storage battery, which is electrically connected to the drive motor. The tractor is equipped with a charging port, a touch control screen, and control buttons. The touch control screen is used to indicate the moving speed and turning angle. The control buttons include a switch knob, a start button, an emergency stop button, and a reset button.

[0019] According to some embodiments of this utility model, a manual remote control is also included. A remote control receiving module is provided inside the tractor. The manual remote control is communicatively connected to the remote control receiving module. The manual remote control remotely controls the tractor to move forward, backward, turn, and accelerate or decelerate.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 This is a schematic diagram of the structure of the power traction device for the aircraft maintenance work ladder according to an embodiment of the present invention. Figure 1 ;

[0023] Figure 2 for Figure 1 Enlarged view of A in the middle;

[0024] Figure 3 for Figure 1 Enlarged view of B in the middle;

[0025] Figure 4 This is a schematic diagram of the structure of the power traction device for the aircraft maintenance work ladder according to an embodiment of the present invention. Figure 2 ;

[0026] Figure 5 This is a schematic diagram of the structure of the power traction device for the aircraft maintenance work ladder according to an embodiment of the present invention. Figure 3 .

[0027] Icon labels:

[0028] 100. Tractor; 110. Anti-collision strip; 120. Tri-color light; 130. Drive motor; 131. Traveling wheel; 140. First directional wheel; 150. Second directional wheel; 160. Charging port cover; 170. Touch control screen; 180. Control button; 190. Lifting ring;

[0029] 200. Lifting mechanism; 210. Lifting drive assembly; 220. Lifting screw; 230. Lifting nut; 240. Lifting connector; 250. Lifting slider; 260. Lifting guide rail; 270. Ratchet assembly; 271. External ratchet; 272. Pawl; 273. Elastic element; 274. Ratchet bracket;

[0030] 300. Hook mechanism; 310. Connecting seat; 311. Hook groove; 320. Locking element; 321. Cover plate; 322. Locking screw; 323. Locking nut. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] Please see Figure 1 and Figure 2 This utility model discloses a power traction device for an aircraft maintenance work ladder, comprising a traction vehicle 100, a lifting mechanism 200, and a hook mechanism 300. The lifting mechanism 200 is mounted on the traction vehicle 100, and the traction vehicle 100 is used to move the lifting mechanism 200. The hook mechanism 300 includes a connecting seat 310 and a locking member 320. One end of the connecting seat 310 is connected to the lifting mechanism 200, and the lifting mechanism 200 is used to drive the connecting seat 310 to rise and fall. The other end of the connecting seat 310 is provided with a hook groove 311, which is used for the bottom crossbeam of the work ladder to extend into. The locking member 320 is movably mounted on the other end of the connecting seat 310, and the locking member 320 is used to confine the bottom crossbeam of the work ladder within the hook groove 311.

[0035] The connecting seat 310 can connect to the bottom crossbeam of the work ladder, and the locking member 320 locks the bottom crossbeam of the work ladder in the hook groove 311, ensuring a tight connection between the work ladder and the connecting seat 310. The lifting mechanism 200 drives the hook mechanism 300 to rise and fall, making it easy for the bottom crossbeam of the work ladder to engage in the hook groove 311 of the connecting seat 310. The tractor 100 drives the lifting mechanism 200 to move, thereby pulling the work ladder, which can save manpower and material resources.

[0036] The lifting mechanism 200 can drive the connecting seat 310 to rise and fall, so that the device can be adapted to the bottom crossbeams of different heights of the work ladder. The locking part 320 is movably connected to the connecting seat 310, so that the hook mechanism 300 can be adapted to the bottom crossbeams of different thicknesses of the work ladder. It has great adaptability and can be successfully connected to work ladders of large, medium and small sizes, effectively saving the cost of purchasing multiple sets.

[0037] In some embodiments, see Figure 1 The locking component 320 includes a cover plate 321, a locking screw 322, and a locking nut 323. The locking screw 322 is mounted on the connecting seat 310 near the hook groove 311. The cover plate 321 has a through hole through which the locking screw 322 passes. The locking nut 323 is threadedly connected to the locking screw 322. The cover plate 321 is located above the hook groove 311, and the locking nut 323 abuts against the side of the cover plate 321 away from the connecting seat 310. When the hook mechanism 300 is connected to the aircraft ladder, the bottom crossbeam of the ladder is engaged in the hook groove 311. The cover plate 321 is used to hold the bottom crossbeam of the ladder in place, and then the locking nut 323 is used to lock it in place, preventing the bottom crossbeam of the ladder from dislodging from the hook groove 311.

[0038] In some embodiments, see Figure 1 and Figure 2The lifting mechanism 200 includes a lifting drive assembly 210, a lifting screw 220, a lifting nut 230, a lifting connector 240, a lifting slider 250, and a lifting guide rail 260. The lifting screw 220 is rotatably connected to the tractor 100. The lifting drive assembly 210 is connected to the lifting screw 220 and drives the lifting screw 220 to rotate. The lifting nut 230 is threadedly connected to the lifting screw 220. The lifting guide rail 260 is mounted on the tractor 100. The lifting slider 250 is slidably connected to the lifting guide rail 260. The lifting connector 240 connects the lifting nut 230, the lifting slider 250, and the connecting seat 310.

[0039] The lifting guide rail 260 is aligned with the axis of the lifting screw 220, both being vertical. The lifting connector 240 connects the lifting nut 230 and the lifting slider 250. The lifting slider 250 is slidably connected to the lifting guide rail 260, preventing the lifting nut 230 from rotating around the lifting screw 220. When the lifting drive assembly 210 drives the lifting screw 220 to rotate, the lifting screw 220 drives the lifting nut 230 to rise and fall, thereby driving the lifting connector 240 to rise and fall, and in turn driving the connecting seat 310 to rise and fall.

[0040] In some embodiments, see Figure 1 and Figure 2 The lifting drive assembly 210 includes a handwheel. Manually turning the handwheel drives the lifting screw 220, making operation convenient. The lifting drive assembly 210 can also be a drive motor.

[0041] In some embodiments, see Figure 1 The lifting connector 240 is hinged to the connecting seat 310, and the axis of the hinge is vertical. The hinge between the lifting connector 240 and the connecting seat 310 can reduce the resistance when the tractor 100 turns, making it easier for the tractor 100 to turn smoothly.

[0042] In some embodiments, see Figure 1 and Figure 3 The lifting mechanism 200 also includes a ratchet assembly 270, which is used to lock the lifting screw 220 to prevent the lifting connector 240 from descending due to gravity. The ratchet assembly 270 includes a ratchet bracket 274, an outer ratchet 271, a pawl 272, and an elastic element 273. The outer ratchet 271 is mounted on the lifting screw 220, the ratchet bracket 274 is mounted on the tractor 100, the middle part of the pawl 272 is hinged to the ratchet bracket 274, and the elastic element 273 connects the pawl 272 and the ratchet bracket 274. The elastic element 273 is used to drive one end of the pawl 272 into the tooth groove of the outer ratchet 271.

[0043] Under normal conditions, the lifting connector 240, lifting slider 250, lifting nut 230, and connecting seat 310 tend to descend to the bottom under gravity. The ratchet assembly 270 restricts the free rotation of the lifting screw 220, preventing the lifting connector 240, lifting slider 250, lifting nut 230, and connecting seat 310 from descending to the bottom under normal conditions.

[0044] When it is necessary to use the handwheel to rotate the lifting screw 220, the handwheel can rotate normally when the rotation direction of the handwheel is opposite to the direction in which the pawl 272 restricts the rotation of the outer ratchet 271; when the rotation direction of the handwheel is the same as the direction in which the pawl 272 restricts the rotation of the outer ratchet 271, the other end of the pawl 272 can be manually moved to pull the pawl 272 out of the tooth groove of the outer ratchet 271, and then the handwheel can be rotated.

[0045] In some embodiments, see Figure 1 and Figure 4 The lifting mechanism 200 is located behind the tractor 100 in the direction of travel. A crash barrier 110 is installed in front of the tractor 100 in the direction of travel. A tri-color light 120 is installed above the tractor 100. When the crash barrier 110 touches an object, the tri-color light 120 emits an alarm light signal. A horn is installed inside the tractor 100; when the crash barrier 110 touches an object, the horn emits an alarm sound signal. Since the work ladder often needs to be moved to achieve the optimal placement, and sometimes a high work ladder may create blind spots, the crash barrier 110, the tri-color light 120, and the horn effectively prevent direct contact between the work ladder and objects such as aircraft, reducing the risk of damage.

[0046] In some embodiments, see Figure 1 and Figure 5 The tractor unit 100 is equipped with a drive motor 130, traveling wheels 131, a first directional wheel 140, and a second directional wheel 150. The drive motor 130 is mounted at the front of the tractor unit 100 and is connected to the traveling wheels 131. The drive motor 130 drives the traveling wheels 131 to rotate, thereby moving the tractor unit 100. The first directional wheel 140 and the second directional wheel 150 are mounted at the rear of the tractor unit 100 and are spaced apart along the width of the tractor unit 100. The traveling wheels 131 provide power and can rotate at any angle. Together with the first directional wheels 140 and the second directional wheels 150, they provide three-point support, ensuring the smooth movement of the tractor unit 100.

[0047] In some embodiments, see Figure 1 and Figure 4The tractor unit 100 is equipped with a battery, which is electrically connected to the drive motor 130, providing power to the drive motor 130. The tractor unit 100 is equipped with a charging port, a touch control screen 170, and control buttons 180. A charging port cover 160 is provided at the charging port. The control buttons 180 include a power switch knob, a start button, an emergency stop button, and a reset button. The touch control screen 170 provides a clear and intuitive display of parameters, allowing operators to easily understand the device's movement speed and turning angle, facilitating safe control.

[0048] In some embodiments, see Figure 1 The aircraft maintenance work ladder power traction device also includes a manual remote control. A remote control receiver module is installed inside the traction vehicle 100. The manual remote control communicates with the remote control receiver module, allowing it to control the traction vehicle 100 to move forward, backward, turn, and accelerate / decelerate. The traction vehicle 100 is equipped with lifting rings 190 for easy transport. Remote-controlled power drive saves manpower and resources, especially for large work ladders that require multiple people to move; this device can operate independently, effectively saving manpower.

[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An aircraft maintenance work ladder power traction device, characterized by, The utility model relates to a kind of lifting device for working ladder, including: Tow vehicle; Lifting mechanism, mounted on the tow vehicle, the tow vehicle is used to drive the lifting mechanism moves; Hook mechanism, including connecting seat and locking piece, one end of the connecting seat is connected with the lifting mechanism, the lifting mechanism is used to drive the connecting seat to lift, the other end of the connecting seat is provided with the hook slot for the bottom crossbeam of working ladder to extend into, the locking piece is movably mounted on the other end of the connecting seat, the locking piece is used to limit the bottom crossbeam of working ladder in hook slot.

2. An aircraft maintenance ladder power traction device as defined in claim 1, wherein, The locking piece includes cover plate, locking screw and locking nut, the locking screw is installed on the connecting seat near the hook slot position, the cover plate is provided with through hole for the locking screw to pass through, the locking nut is threadedly connected with the locking screw, the cover plate is located above the hook slot, and the locking nut is abutted on the side of the cover plate away from the connecting seat.

3. An aircraft maintenance ladder power tow device as defined in claim 1 wherein, The lifting mechanism includes lifting drive assembly, lifting screw, lifting nut, lifting connecting piece, lifting slider and lifting guide rail, the lifting screw is rotatably connected on the tow vehicle, the lifting drive assembly is connected with the lifting screw, the lifting drive assembly is used to drive the lifting screw to rotate, the lifting nut is threadedly connected with the lifting screw, the lifting guide rail is installed on the tow vehicle, the lifting slider is slidably connected on the lifting guide rail, and the lifting connecting piece is connected with the lifting nut, the lifting slider and the connecting seat.

4. An aircraft maintenance ladder power tow device as defined in claim 3 wherein, The lifting drive assembly includes hand wheel.

5. An aircraft maintenance ladder power tow device as defined in claim 3 wherein, The lifting connecting piece is hinged with the connecting seat, and the axial direction of the hinge shaft is vertical direction.

6. An aircraft maintenance ladder power tow device as defined in claim 3 wherein, The lifting mechanism further includes ratchet assembly, the ratchet assembly is used to lock the lifting screw so that the lifting connecting piece does not descend due to gravity, the ratchet assembly includes outer ratchet, pawl and elastic member, the outer ratchet is installed on the lifting screw, the middle part of the pawl is hinged with the tow vehicle, the elastic member is connected with the pawl and the tow vehicle, and the elastic member is used to drive one end of the pawl to extend into the tooth groove of the outer ratchet.

7. An aircraft maintenance ladder power tow device as defined in claim 1 wherein, The lifting mechanism is arranged behind the advancing direction of the tow vehicle, the front of the advancing direction of the tow vehicle is provided with anti-collision strip, the upper of the tow vehicle is provided with three-color light, the three-color light is configured to emit alarm light signal when the anti-collision strip touches external object, the inside of the tow vehicle is provided with horn, and the horn is configured to emit alarm sound signal when the anti-collision strip touches external object.

8. An aircraft maintenance ladder power tow device as defined in claim 1 wherein, The lower of the tow vehicle is provided with driving motor, walking wheel, first directional wheel and second directional wheel, the driving motor is installed in front of the tow vehicle, the driving motor is drivingly connected with the walking wheel, the driving motor is used to drive the walking wheel to rotate to drive the tow vehicle to move, the first directional wheel and the second directional wheel are installed behind the tow vehicle, and the first directional wheel and the second directional wheel are arranged along the width direction of the tow vehicle.

9. An aircraft maintenance ladder power tow device as defined in claim 8 wherein, The traction vehicle is internally provided with a battery, the battery is electrically connected with the driving motor, the traction vehicle is provided with a charging port, a touch control screen and control buttons, the touch control screen is used for indicating the moving speed and the turning angle, and the control buttons include a switch knob, a start button, an emergency stop button and a reset button.

10. An aircraft maintenance ladder power tow device as defined in claim 1 wherein, A manual remote controller is further included, a remote control receiving module is arranged in the traction vehicle, the manual remote controller is in communication connection with the remote control receiving module, and the manual remote controller remotely controls the traction vehicle to move forward, move backward, turn and accelerate or decelerate.

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