Single-power-source double-chain aviation crane device

Abstract

The utility model discloses a single-power-source double-chain aviation crane device and relates to the technical field of cranes. According to the technical scheme, the device comprises a lifting mechanism, a walking mechanism and a flexible shaft. The lifting mechanism is flexibly connected with the walking mechanism through a flexible shaft and used for transmitting torque. A motor assembly is arranged in the lifting mechanism. The transmission structure of the single-power-source double-transmission-chain air freight crane, which is provided by the utility model, is compact in structure and simple and convenient to switch, is provided for the air freight crane.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical crane technical field, especially relates to a single power source double chain aviation crane device. BACKGROUND

[0002] At present, the power mode of the aviation cargo crane is divided into lifting working mode and walking working mode, and each working mode of the aviation cargo crane requires interlocking, that is, the walking working is locked when the lifting working, and the lifting working is locked when the walking working. The utility model adopts the planetary composite transmission mechanism to make the lifting working mode and the walking working mode share the same power source, and each working mode of the crane is switched through a plurality of electromagnetic brakes, which reduces the weight of the whole system on the one hand, and improves the number of components of the control system on the other hand, thereby realizing the optimization of the electrical system on the aircraft control system, improving the safety of the aviation cargo crane, reducing the overall structure weight, and realizing the low-clearance design structure. SUMMARY

[0003] The utility model discloses a kind of single power source double transmission chain aviation cargo crane transmission structures for aviation cargo crane, which is compact in structure, and switching is easy.

[0004] Therefore, according to an aspect of the utility model embodiment, a single power source double chain aviation crane device is provided, which comprises: a lifting mechanism 1, a walking mechanism 2 and a flexible shaft 3; the lifting mechanism 1 and the walking mechanism 2 are flexibly connected through the flexible shaft 3 for torque transmission; the lifting mechanism 1 is provided with a motor assembly 4, which includes a walking route electromagnetic brake 4-1, a lifting route electromagnetic brake 4-2, a first speed reducer 4-3, a second speed reducer 4-4, and a motor 4-5. The output shaft of the motor 4-5 is connected with the second speed reducer 4-4, and the second speed reducer 4-4 is connected with the lifting route electromagnetic brake 4-2. The device includes a lifting transmission route and a walking transmission route. By switching the walking route electromagnetic brake 4-1 and the lifting route electromagnetic brake 4-2, the motor assembly 4 can realize two working states sharing a single power source.

[0005] Optionally, the walking route electromagnetic brake 4-1 and the lifting route electromagnetic brake 4-2 are normally closed electromagnetic clutches.

[0006] Optionally, when lifting, the walking route electromagnetic brake 4-1 is in a braking state; when walking, the lifting route electromagnetic brake 4-2 is in a braking state.

[0007] Optionally, the second speed reducer 4-4 is provided with an NGW planetary speed reduction mechanism, including a sun gear, a planet carrier 11 and a ring gear 12, when the ring gear 12 is fixed, the torque output of the sun gear is output to the planet carrier 11 end, when the planet carrier 11 is fixed, the torque of the sun gear is output to the output end of the ring gear 12; the output shaft of the motor 4-5 is connected with the sun gear of the NGW planetary speed reduction mechanism, and the planet carrier 11 of the NGW planetary speed reduction mechanism is connected with the walking route electromagnetic brake 4-1.

[0008] Optionally, the lifting mechanism 1 further comprises a third speed reducer 5 and a winding drum assembly 6.

[0009] Optionally, when the device is in lifting operation, the walking route electromagnetic brake 4-1 in the walking transmission route is in the braking state, when the motor assembly 4 is driven, the sun gear of the second speed reducer 4-4 connected therewith drives the output end of the planet carrier 11, drives the third speed reducer 5 to drive the output end of the winding drum assembly 6, and the lifting and lowering functions are realized.

[0010] Optionally, when the device is in walking operation, the lifting route electromagnetic brake 4-2 in the lifting transmission route is in the braking state, when the motor assembly 4 is driven, the sun gear of the second speed reducer 4-4 connected therewith drives the output end of the ring gear 12, thereby driving the output end of the walking mechanism 2, and the walking function is realized.

[0011] Optionally, the walking mechanism 2 comprises a gear transmission mechanism 7 and a walking trolley 8; the soft shaft 3 is connected with the gear transmission mechanism 7 to transmit torque to the gear transmission mechanism 7, and the gear transmission mechanism 7 is connected with the walking trolley 8 to transmit torque to the walking trolley 8.

[0012] Optionally, the universal adapter mechanism 9 is further provided with bevel gears at both ends, and the bevel gears are connected with a plurality of walking trolleys 8.

[0013] Optionally, the motor 4-5 serves as a power source of the aerial crane transmission structure, is provided with a power-off brake, and provides a braking torque after being positioned.

[0014] Compared with the prior art, the utility model has the following beneficial technical effects:

[0015] By adopting the planetary composite transmission mechanism, the lifting operation mode and the walking operation mode share the same power source, the electromagnetic brake is installed in the transmission structure, the transmission route in the structure can be switched, a single power source can meet the use demand, the braking reliability and safety of the aerial cargo crane are improved, the overall structure weight is reduced, the priority height of the aerial cargo crane is reduced through the flexible connection of the lifting-walking transmission route, the low-clearance design structure is realized, and the operation reliability of the aerial cargo crane and the utilization rate of the cabin space are improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of a single power source double-chain aviation crane device according to the utility model;

[0017] Figure 2 is a transmission principle schematic view of a single power source double-chain aviation crane device according to the utility model;

[0018] Figure 3 is a structural schematic view of a second speed reducer of a single power source double-chain aviation crane device according to the utility model;

[0019] Figure 4 is a structural section view of the second speed reducer of the aviation crane in the utility model

[0020] Figure 5 is a working equivalent principle view of a walking mechanism of the aviation crane in the utility model;

[0021] Figure 6 is a working equivalent principle view of a lifting mechanism of the aviation crane in the utility model;

[0022] Explanation of reference signs:

[0023] 1-lifting mechanism, 2-walking mechanism, 3-soft shaft; 4-motor assembly, 5-third speed reducer, 6-winding drum assembly, 4-1 electromagnetic brake, 4-2 electromagnetic brake, 4-3 first speed reducer, 4-4 second speed reducer, 4-5 motor, 7-gear transmission mechanism, 8-walking trolley, 9-universal adapter mechanism, 1-1-lifting mechanism shell, 2-1-walking mechanism shell, 11-planet carrier, 12-toothed ring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] As Figure 1 and Figure 2As shown, the present invention provides a single-power-source, dual-chain aerial crane device, comprising a hoisting mechanism 1, a traveling mechanism 2, and a flexible shaft 3. The hoisting mechanism 1 and the traveling mechanism 2 are flexibly connected via the flexible shaft 3 for torque transmission. The flexible shaft 3 has a certain bending capacity and a large deformation range, and is internally equipped with a shaft core and other components, providing the necessary conditions for the single power source arrangement onboard. The hoisting mechanism 1 is equipped with a motor assembly 4, which includes a traveling electromagnetic brake 4-1, a hoisting electromagnetic brake 4-2, a first reducer 4-3, a second reducer 4-4, and a motor 4-5. The output shaft of the motor 4-5 is linked to the second reducer 4-4, which in turn is linked to the hoisting electromagnetic brake 4-2. The device includes a hoisting transmission path and a traveling transmission path. By switching between the traveling electromagnetic brake 4-1 and the hoisting electromagnetic brake 4-2, the motor assembly 4 can operate in two different operating modes, sharing a single power source. The stop ends of the traveling electromagnetic brake 4-1 and the hoisting electromagnetic brake 4-2 are both mounted on the hoisting mechanism housing 1-1. The walking mechanism 2 is connected to the motor assembly 4 of the lifting mechanism 1 through a flexible shaft 3. The flexible connection with the lifting-walking transmission line can effectively reduce the overall height of the air cargo crane and realize a low-headroom design structure.

[0026] Furthermore, based on the characteristics of the aerial crane's lifting and traveling operations, the traveling route electromagnetic brake 4-1 and the hoisting route electromagnetic brake 4-2 are normally closed electromagnetic clutches. The aerial crane's transmission structure features two transmission paths: the hoisting path and the traveling path. By switching the electromagnetic clutch, the aerial crane's motor assembly 4 can share a single power source for both operating modes.

[0027] Furthermore, during the lifting operation, the electromagnetic brake 4-1 of the travel route is in a braking state; during the traveling operation, the electromagnetic brake 4-2 of the lifting route is in a braking state, thereby achieving the reliability and stability of the interlocking of the various working modes of the air cargo crane.

[0028] Furthermore, if Figure 3 As shown, the second reducer 4-4 is provided with an NGW planetary reduction mechanism, including a sun gear, a planet carrier 11 and a ring gear 12. When the ring gear 12 is fixed, the torque of the sun gear is output to the end of the planet carrier 11. When the planet carrier 11 is fixed, the sun gear torque is output to the output end of the ring gear 12. The output shaft of the motor 4-5 is linked with the sun gear of the NGW planetary reduction mechanism, and the planet carrier 11 of the NGW planetary reduction mechanism is linked with the walking path electromagnetic brake 4-1.

[0029] Furthermore, the lifting mechanism 1 also includes a third reducer 5 and a reel assembly 6 .

[0030] Furthermore, when the device is in lifting operation, the walking route electromagnetic brake 4-1 in the walking transmission route is in a braking state. When the motor assembly 4 is driven, the sun gear of the second reducer 4-4 connected thereto drives the output end of the planetary frame 11, drives the output end of the third reducer 5 to drive the drum assembly 6, and realizes the lifting and lowering functions.

[0031] Furthermore, when the device is moving, the lifting route electromagnetic brake 4-2 in the lifting transmission route is in a braking state. When the motor assembly 4 is driven, the sun gear of the second reducer 4-4 connected thereto drives the output end of the ring gear 12, thereby driving the output end of the walking mechanism 2 to realize the walking function.

[0032] Furthermore, the traveling mechanism 2 includes a gear transmission mechanism 7 and a traveling pulley 8. The flexible shaft 3 is linked with the gear transmission mechanism 7 to transmit torque to the gear transmission mechanism 7, and the gear transmission mechanism 7 is linked with the traveling pulley 8 to transmit torque to the traveling pulley 8. The gear transmission mechanism 7 and the traveling pulley 8 are installed in the traveling mechanism housing 2-1.

[0033] Furthermore, it also includes a universal transfer mechanism 9, with bevel gears at both ends of the universal transfer mechanism 9, which are linked to multiple walking pulleys 8. The universal transfer mechanism adopts a universal joint transmission to change the axis transmission.

[0034] Furthermore, the motor 4-5 of the motor assembly 4 serves as the power source of the transmission structure of the aerial crane and is provided with a power-off brake to provide a braking torque after it is in place; when lifting heavy objects, the hovering lifting transmission electromagnetic clutch 4-2 is in a braking state, and the power-off brake of the motor 4-5 can achieve a multi-redundancy design to improve the safety of the braking operation.

[0035] Furthermore, the traveling mechanism 2 and the flexible shaft 3 are fixed by docking via flanges, and the shaft core of the flexible shaft 3 is docked and installed via a bearing on the traveling mechanism housing 2 - 1 .

[0036] Example 1

[0037] like Figure 2 As shown, the aerial crane traveling mechanism 2 is connected to the lifting mechanism 1 through a flexible shaft 3. The flexible connection with the lifting-traveling transmission route can effectively reduce the overall height of the aerial cargo crane and realize a low-headroom design structure.

[0038] Example 2

[0039] like Figure 2As shown, the walking mechanism 2 is coupled with the lifting mechanism 1 through the flexible shaft 3, and the flexible coupling of the lifting-walking transmission route can effectively reduce the overall height of the aerial cargo crane, and realize the low-clearance design structure. The flexible shaft 3 has a certain bending ability and a large deformation, and is internally provided with a shaft core and the like. The flexible shaft 3 provides necessary conditions for the on-machine single power source arrangement.

[0040] Embodiment 3

[0041] As shown in Figure 2 and Figure 6 When the aerial crane is lifting, the electromagnetic clutch 4-1 in the walking transmission route is in a braking state. When the motor assembly 4 is driven, the sun gear 10 of the second reducer 4-4 fixedly connected thereto drives the output end of the planet carrier 11, thereby driving the output end of the third reducer 5 and the drum assembly 6, to realize the lifting and lowering functions of the heavy object.

[0042] Embodiment 4

[0043] As shown in Figures 3-4 The second reducer 4-4 is composed of a sun gear (not shown in the figure), a planet carrier 11 and a ring gear 12. When the ring gear 12 is fixed, the sun gear torque can be output to the planet carrier 11 end. When the planet carrier 11 is fixed, the sun gear torque can be output to the output end of the ring gear 12. When the aerial crane is walking, the electromagnetic clutch 4-2 in the lifting transmission route is in a braking state. The planet carrier of the NGW planet is fixed, the center wheel input torque and the ring gear output principle are adopted. When the motor assembly 4 is driven, the sun gear 10 of the reducer II 4-4 fixedly connected thereto drives the output end of the ring gear 12, thereby driving the output end of the walking mechanism 2, to realize the walking function of the aerial crane. The output shaft of the motor 4-5 is connected with the sun gear 10 of the NGW planetary reducer mechanism 4-4-1 of the reducer II 4-4. The planet carrier 11 of the NGW planetary reducer mechanism 4-4-1 is connected in series with the electromagnetic brake 4-1. The stop ends of the electromagnetic clutches 4-1 and 4-2 are fixedly connected with the lifting mechanism housing 1-1.

[0044] Embodiment 5

[0045] As shown in Figure 2 and Figure 5As shown, when the aerial crane is walking, the electromagnetic clutch 4-2 in the lifting transmission route is in the braking state, when the motor assembly 4 is driven, the sun gear of the second reduction gear 4-4 is driven, the corresponding driving gear ring 12 output end, so as to drive the output end of the walking mechanism 2, realize the walking function of the aerial crane. The output shaft of the motor 4-5 is connected with the sun gear of the NGW planetary reduction mechanism of the second reduction gear 4-4, and the planet carrier 11 of the NGW planetary reduction mechanism is connected with the electromagnetic brake 4-1 in series. The walking mechanism 2 is connected with the lifting mechanism 1 through the flexible shaft 4, and the flexible connection of the lifting-walking transmission route can effectively reduce the overall height of the aerial cargo crane, and realizes the low clearance design structure. The flexible shaft 3 has certain bending ability and large deformation, and is provided with shaft core and other components inside, and the flexible shaft 3 provides necessary conditions for the on-machine single power source arrangement.

[0046] The above is only a specific embodiment of the present application, which is described in detail, and the part not described in detail is the conventional technology. However, the protection scope of the present application is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. The protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A single power source dual chain aircraft tug device, characterized by, The device comprises a lifting mechanism (1), a walking mechanism (2) and a flexible shaft (3); the lifting mechanism (1) and the walking mechanism (2) are flexibly connected through the flexible shaft (3) for torque transmission; a motor assembly (4) is arranged in the lifting mechanism (1); the motor assembly (4) comprises a walking route electromagnetic brake (4-1), a lifting route electromagnetic brake (4-2), a first speed reducer (4-3), a second speed reducer (4-4) and a motor (4-5); the motor (4-5) serves as a power source, and an output shaft thereof is connected with the second speed reducer (4-4); the second speed reducer (4-4) is switchable between being connected with the lifting route electromagnetic brake (4-2) and being connected with the first speed reducer (4-3); the first speed reducer (4-3) is connected with the walking route electromagnetic brake (4-1); the device comprises a lifting transmission route and a walking transmission route; the motor assembly (4) realizes two working states by switching the second speed reducer (4-4) with the first speed reducer (4-3) and the lifting route electromagnetic brake (4-2), and shares a single power source. The walking route electromagnetic brake (4-1) and the lifting route electromagnetic brake (4-2) are normally closed electromagnetic clutches.

2. The apparatus of claim 1, wherein, During lifting work, the walking route electromagnetic brake (4-1) is in a braking state; during walking work, the lifting route electromagnetic brake (4-2) is in a braking state.

3. The apparatus of claim 1, wherein, The second speed reducer (4-4) is provided with an NGW planetary speed reduction mechanism, which comprises a sun gear, a planet carrier (11) and a ring gear (12); when the ring gear (12) is fixed, the torque of the sun gear is output to the planet carrier (11); when the planet carrier (11) is fixed, the torque of the sun gear is output to the output end of the ring gear (12); the output shaft of the motor (4-5) is connected with the sun gear of the NGW planetary speed reduction mechanism; the planet carrier (11) of the NGW planetary speed reduction mechanism is connected with the first speed reducer (4-3).

4. The apparatus of claim 3, wherein, The lifting mechanism (1) further comprises a third speed reducer (5) and a winding drum assembly (6), and the third speed reducer (5) and the winding drum assembly (6) are connected.

5. The apparatus of claim 4, wherein, During lifting work of the device, the walking route electromagnetic brake (4-1) in the walking transmission route is in a braking state; when the motor assembly (4) is driven, the sun gear of the second speed reducer (4-4) connected therewith drives the output end of the planet carrier (11), drives the third speed reducer (5) and drives the output end of the winding drum assembly (6), so as to realize lifting and lowering functions.

6. The apparatus of claim 5, wherein, During walking work of the device, the lifting route electromagnetic brake (4-2) in the lifting transmission route is in a braking state; when the motor assembly (4) is driven, the sun gear of the second speed reducer (4-4) connected therewith drives the output end of the ring gear (12), so as to drive the output end of the walking mechanism (2) and realize walking function.

7. The apparatus of claim 6, wherein, The walking mechanism (2) comprises a gear transmission mechanism (7) and a walking trolley (8); the flexible shaft (3) is connected with the gear transmission mechanism (7) to transmit torque to the gear transmission mechanism (7); the gear transmission mechanism (7) is connected with the walking trolley (8) to transmit torque to the walking trolley (8).

8. The apparatus of claim 1, wherein, ​ 9. The apparatus of claim 8, wherein, Also include the universal adapter mechanism (9), the universal adapter mechanism (9) both ends are provided with bevel gears, and a plurality of walking trolley (8) linkage.

10. The apparatus of claim 1, wherein, The motor (4-5) is the power source of the aerial crane transmission structure, is provided with a power-off brake, and provides the braking torque after reaching the position.

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