Air-drop system platform traction walking device with auxiliary loading / unloading capacity

Abstract

The invention discloses an air-drop system cargo platform traction walking device with auxiliary loading / unloading capacity. Comprising a front wheel device, a main wheel device, a bearing wheel device and a jack (2), the front wheel device is a full-bridge wheel device with a traction steering piece and is connected with the front end of the cargo platform main body; the main wheel devices are of a half-bridge structure and are symmetrically installed on the two sides of the cargo platform system. The bearing wheel devices are of half-bridge structures and are symmetrically mounted at the tail end of the platform system; and the jacks (2) can be connected to different positions of the platform main body through connecting pieces. According to the large-tonnage heavy-loading air-drop system loading and unloading machine, the blank of a large-tonnage heavy-loading air-drop system loading and unloading machine in China is filled up, and a large-tonnage heavy-loading platform system can walk on a flat road in a short-distance traction mode at the speed not larger than 10 km / h; and the large-tonnage heavy loading platform system can be assisted in loading and unloading when the air-drop loading machine hoisting equipment does not meet the loading and unloading capacity of the large-tonnage heavy loading air-drop system.

Description

Technical Field

[0001] The invention belongs to the technical field of heavy-duty airdrop, and specifically, is a device for traction and walking of a cargo platform of an airdrop system with the capability of assisting loading / unloading. Background Art

[0002] At present, there is only a walking device for the 12-ton heavy-duty airdrop system in China, which can only meet the walking needs of the 12-ton cargo platform; and it can only realize the walking function, and cannot realize loading and unloading.

[0003] For the large-tonnage heavy-duty airdrop system, its weight is much greater than that of the 12-ton heavy-duty airdrop system, reaching 20 tons, and its cargo platform size has increased from the original 4-meter cargo platform to 6-meter. The significant increase in weight and size makes it difficult to design its cargo platform walking device according to the existing technical form.

[0004] At the same time, due to the limitations of the characteristics of the large-tonnage cargo platform, it is impossible to use a general loading and unloading platform truck for loading and unloading. The walking device needs to have the ability to assist in loading and unloading. The existing walking device design technology cannot achieve this function. Summary of the invention

[0005] The object of the present invention is to provide a device for traction and walking of a cargo platform of an airdrop system with the capability of assisting loading / unloading.

[0006] The technical solution to achieve the purpose of the present invention is: a device for traction and walking of the cargo platform of an airdrop system with the ability to assist loading / unloading, the device comprising a front wheel device, a main wheel device, a load-bearing wheel device and a jack; the front wheel device is a full-bridge wheel device with a traction steering device, connected to the front end of the cargo platform body; the main wheel device is a half-bridge structure, symmetrically installed on both sides of the cargo platform system; the load-bearing wheel device is a half-bridge structure, symmetrically installed at the rear end of the cargo platform system; the jack can be connected to different positions of the cargo platform body through a connecting piece.

[0007] Further, the front wheel device comprises a traction rod, a pair of connecting brackets, two pairs of first wheel devices connected by the connecting brackets, a quick-release pin connected to the traction rod, and four quick-release pins connected to the brackets;

[0008] The towing rod is connected to the connecting bracket through a quick-release pin, and the connecting bracket is connected to the front of the cargo platform body through four quick-release pins; the two main beams of the connecting bracket are connected to the two first wheel devices through four quick-release pins to form a full-bridge wheel structure; the towing rod has a steering function.

[0009] Furthermore, the main wheel device includes a half-axle, a pair of second wheel devices, and a quick-release pin connected to the half-axle; the second wheel device can be inserted into the mounting holes in the middle of both sides of the cargo platform body through the half-axle, and positioned by the quick-release pin connected to it.

[0010] Furthermore, the load-bearing wheel device includes a half-axle, a third wheel device, and a quick-release pin connected to the half-axle; the third wheel device is inserted into the mounting holes at the rear of both sides of the cargo platform body through the half-axle, and is positioned by the quick-release pin connected to it.

[0011] Furthermore, the connecting part of the jack is divided into two parts, the high part is used for lifting and lowering when installing and removing the main wheel device, and the low part is used for lifting and lowering when installing and removing the front wheel device and the load-bearing wheel device; a fourth wheel device is provided on the bottom side of the jack.

[0012] Compared with the prior art, the present invention has significant advantages: currently, large-tonnage cargo platforms in China cannot be lifted by airdrop carriers, and the present invention not only has the ability to tow and move large-tonnage cargo platforms, but can also assist large-tonnage cargo platforms in loading and unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front wheel device.

[0014] Figure 2 It is the main wheel device.

[0015] Figure 3 This is a diagram of a load-bearing wheel arrangement.

[0016] Figure 4 It's a jack.

[0017] Figure 5 This is the general assembly drawing of the cargo platform.

[0018] Figure 6 The jack's lower connecting ear is connected to the rear interface of the cargo platform.

[0019] Figure 7 The first step is to install the load-bearing wheel device.

[0020] Figure 8 The installation of the load-bearing wheel device is completed.

[0021] Fig. 9 The jack's lower connecting ear is connected to the front interface of the cargo platform.

[0022] Fig.10 Install the front wheel device.

[0023] Fig.11 The front wheel device is installed.

[0024] Fig.12 The high connecting ear of the jack is connected to the rear interface of the cargo platform.

[0025] Fig.13 It is to install the main wheel device.

[0026] Fig.14This is a picture of the main wheel device after installation. DETAILED DESCRIPTION

[0027] The present invention designs a walking device suitable for large-tonnage heavy-duty airdrop, so that the large-tonnage heavy-duty cargo platform system can be towed and walked over a short distance at a speed not exceeding 10km / h on a flat road and has the ability to assist the cargo platform system in loading and unloading. The present invention is a new type of walking device that can be adapted to large-tonnage airdrop cargo platforms and meet their technical index requirements such as weight, size, loading and unloading.

[0028] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0029] The present invention mainly realizes the functions of traction, loading and unloading through a traveling device, and the traveling device comprises: one front wheel device, two main wheel devices, two load-bearing wheel devices and two jacks.

[0030] The walking device comprises a front wheel device, a main wheel device, a load-bearing wheel device, and a jack 2.

[0031] Front wheel device( Figure 1 ) is a full-bridge wheel device with a traction steering component, which is connected to the front end of the cargo platform body. The front wheel device can realize traction and steering functions. The front wheel device includes a traction rod 1, a pair of connecting brackets 2, two pairs of first wheel devices 3 connected by the connecting brackets, a quick release pin 4 connected to the traction rod, and four quick release pins 4 connected to the brackets.

[0032] The traction rod 1 of the front wheel device is connected to the connecting bracket 2 through a quick-release pin to achieve the functions of quick disassembly, traction and steering.

[0033] The connecting bracket 2 of the front wheel device is connected to the front part of the cargo platform body (the front part along the heading, the same below) through four quick-release pins 4, which can realize the quick disassembly and assembly function; the two main beams of the connecting bracket 2 are connected to the two pairs of first wheel devices 3 to form a full-bridge wheel structure; the connecting bracket 2 contains a steering structure, and the steering function can be realized through the traction rod.

[0034] The wheel device of the front wheel device is connected to the connecting bracket through a wheel axle, so as to realize the walking function.

[0035] Main wheel device ( Figure 2 ) is a half-bridge structure, installed on both sides of the cargo platform system. The main wheel device is used for the main load-bearing during traction. It includes a half-axle 5, a pair of second wheel devices 6, and a quick-release pin 4 connected to the half-axle.

[0036] The half-axle 5 of the main wheel device can be inserted into the mounting holes in the middle of both sides of the cargo platform body, and positioned by a quick-release pin connected to it, thereby realizing the quick disassembly and assembly function.

[0037] The second wheel device 6 of the main wheel device is inserted into the mounting holes in the middle of both sides of the cargo platform body through the wheel axle to realize the walking function.

[0038] Loading wheel device ( Figure 3 ) is a half-bridge structure installed at the tail end of the cargo platform system. The load-bearing wheel device is used for auxiliary support when towing the machine or pulling the machine off. It includes a half-axle 7, a third wheel device 8, and a quick-release pin 4 connected to the half-axle.

[0039] The half-axle 7 of the load-bearing wheel device can be inserted into the mounting holes at the rear of both sides of the cargo platform body, and positioned by a quick-release pin connected to it, so as to realize the function of quick disassembly and assembly.

[0040] The third wheel device 8 of the load-bearing wheel device is inserted into the mounting holes at the rear of both sides of the cargo platform body through the wheel axle to realize the walking function.

[0041] Jack 2( Figure 4 ) is a purely mechanical structure for size transmission, which contains two gears, fast and slow. It can be connected to different positions of the cargo platform body through connecting parts. By manually shaking the handle, the function of lifting the cargo platform body can be realized.

[0042] The connecting parts of the jack are divided into two parts, high and low. The high part is used for lifting and lowering when installing and removing the main wheel device, and the low part is used for lifting and lowering when installing and removing the front wheel device and the load-bearing wheel device.

[0043] The bottom side of the jack contains a wheel device. After the jack is tilted to make the wheel device contact the ground, it is pushed or dragged manually.

[0044] The jack has two gears, fast and slow. The slow gear corresponds to situations with heavier loads, and the fast gear corresponds to situations with no load or lighter loads.

[0045] The installation of the walking device should be carried out in the order of first installing the load-bearing wheel device, then installing the front wheel device, and finally installing the main wheel device (see Figure 5 ).

[0046] 1) Install the load-bearing wheel device

[0047] At the rear of the ready cargo platform (10) (fixed towing lock direction), adjust the two jacks to the appropriate height, and use the low connection ear pieces on the jack (11) shell to connect to the corresponding interface at the rear of the cargo platform. Operators work together to ensure synchronization as much as possible, and lift the rear of the cargo platform to a height of about 400mm off the ground ( Figure 6 The operator rolls a load-bearing wheel device (12) onto the traveling device installation tool (14) loaded on the hydraulic forklift (13), and adjusts the half-axle to be basically parallel to the ground through the installation tool; adjusts the hydraulic forklift so that the wheel axle is basically aligned with the axis of the loading wheel installation hole on the cargo platform (see Figure 7). Operate the jack to make fine adjustments to the lifting and lowering, and push the hydraulic forklift simultaneously to fully insert the half-axle of the load-bearing wheel device into the installation hole; pay attention to the direction of the lugs on the half-axle to ensure that they can match the lugs on the cargo platform body. Slightly adjust the depth of the wheel axle insertion to make the mounting lugs of the load-bearing wheel correspond to the two holes of the mounting lugs on the cargo platform, and insert the quick-release pin to fix it. This completes the installation of one load-bearing wheel device (see Figure 8 ). Repeat the above steps to complete the installation of another load-bearing wheel device. The operator cooperates with the jack to lower the jack. During the lowering process, the wheel block is used to limit the forward and backward rolling of the load-bearing wheel. After the jack is lowered to a stress-free state, the jack is removed from the cargo platform.

[0048] 2) Install the front wheel device

[0049] Transfer the jack (11) to the front of the cargo platform (10) (unlocking device end), adjust the two jacks to the appropriate height, and use the low connection ear pieces on the jack housing to connect them to the corresponding interfaces on the front of the cargo platform body (see Fig. 9 Connect the towing rod to the front wheel device (15) connecting bracket, and turn the towing rod so that the two wheels are as vertical as possible to the main beam of the connecting bracket (see Fig.10 ). Push the front wheel device so that the grooves at the ends of the two upper connecting arms of the front wheel device connecting bracket match the corresponding ears of the cargo platform body, and fix them with quick-release pins; the operators work together to ensure synchronization as much as possible, and lift the front of the cargo platform to a height of about 400mm from the ground. During the lifting process, make the grooves at the ends of the two lower connecting arms of the front wheel device connecting bracket match the corresponding ears of the cargo platform body, and fix them with quick-release pins (see Fig.11 ). The operators work together to operate the jack, lower the jack to a stress-free state, and remove the jack.

[0050] 3) Install the main wheel device

[0051] Move the wheel chocks to the front wheel device, move the jacks to the middle of both sides of the cargo platform, adjust the two jacks to the appropriate height, and use the high connection ears on the jack housing to connect them to the cargo platform body (see Fig.12 The operators work together to ensure synchronization as much as possible and raise the main wheel mounting hole to a height of about 1200 mm from the ground. The operator rolls a main wheel device (16) onto the travel device mounting tool loaded on the hydraulic forklift, and uses the mounting tool to adjust the half shaft to be basically parallel to the ground; adjust the hydraulic forklift so that the wheel axle is basically aligned with the axis of the main wheel mounting hole on the cargo platform (see Fig.13 ). Operate the jack to make fine adjustments to the lifting and lowering, and simultaneously push the hydraulic forklift to fully insert the main wheel device into the installation hole; pay attention to the direction of the ear piece on the half shaft to ensure that it can match the ear piece on the cargo platform body. Slightly adjust the depth of the wheel axle insertion to make the mounting ear piece of the load-bearing wheel correspond to the two holes of the mounting ear of the cargo platform, and insert the quick release pin to fix it. At this point, the installation of one main wheel device (16) is completed (see Fig.14 ). Repeat the above steps to complete the installation of another main wheel device. The operator cooperates to lower the jack, and during the lowering process, the wheel block is used to limit the main wheel from rolling forward and backward. After the jack is lowered to a stress-free state, the jack is removed from the cargo platform.

[0052] 4) Traction walking

[0053] The towing rod of the front wheel device is rigidly connected to the tractor with a total towing mass of 25t or more. The turning angle during towing is not greater than 35°, or the road width is not less than 16m. The towing speed is not greater than 10m / s.

[0054] 5) Disassembly of traction equipment and traveling device

[0055] The steps for disassembling the traction loader and traveling device are as follows:

[0056] a) Use the winch to pull the cargo platform onto the cargo bridge, and use the traction rod on the front wheel to control the moving direction of the cargo platform; until the main wheel device of the cargo platform is suspended; remove the main wheel device from the cargo platform. Move the wheel chocks at any time during the process of pulling the cargo platform. Whenever the cargo platform stops moving, the wheel chocks should be placed at the rear and bottom of the load-bearing wheel device;

[0057] b) Continue to use the winch to pull the cargo platform onto the cargo bridge until the front wheel of the cargo platform passes the transfer pulley on the inclined platform by about 1500mm;

[0058] c) Use two mooring chains in the onboard equipment to tie the cargo platform to the mooring connector on the cargo hold floor. Release the steel cable of the electric winch;

[0059] d) Raise the ramp, and when the front wheel of the cargo platform is suspended in the air, remove the front wheel assembly. When completing this operation, note that the wheel chock should support the wheel assembly of the load-bearing wheel assembly;

[0060] e) Flip the guide pulley in front of the cargo platform downward to the working position (rotate 90°), lock it with the pin at the long end of the release cable, and use a fuse to make an 8-shaped safety;

[0061] f) Lower the aircraft ramp by 6°, tighten the steel cable of the electric winch, and remove the mooring chain from the cargo platform;

[0062] g) Continue to pull the cargo platform. When the center of gravity of the cargo platform passes through the transfer pulley, the cargo platform should fall onto the roller track.

[0063] At this time, the guide pulley in front of the cargo platform should be engaged with the central guide rail section with the upper edge cut off. Continue to move the cargo platform until its load-bearing wheel assembly is approximately 1100mm from the rear edge of the ramp;

[0064] h) Use two mooring chains to tie the cargo platform to the mooring joints on the cargo hold floor. Loosen the steel cable of the electric winch, remove the load-bearing wheel device from the cargo platform, and remove the wheel chocks.

[0065] The present invention has been tested on the ground for dozens of times. The traveling device can be installed smoothly and disassembled smoothly after walking. There is no obvious damage or deformation of the components. The movable parts move smoothly and have high reliability. There are no faults such as poor actuation and jamming, and the expected effect has been achieved.

Claims

1. A device for traction and walking of cargo platform of airdrop system with auxiliary loading / unloading capability, characterized in that: The device comprises a front wheel device, a main wheel device, a load-bearing wheel device and a jack (2); The front wheel device is a full-bridge wheel device with a traction steering component, which is connected to the front end of the cargo platform body; the main wheel device is a half-bridge structure, which is symmetrically installed on both sides of the cargo platform system; the load-bearing wheel device is a half-bridge structure, which is symmetrically installed at the rear end of the cargo platform system; the jack (2) can be connected to different positions of the cargo platform body through a connecting piece.

2. The device for traction and walking of the cargo platform of the airdrop system with the auxiliary loading / unloading capability according to claim 1 is characterized in that: The front wheel device comprises a traction rod (1), a pair of connecting brackets (2), two pairs of first wheel devices (3) connected via the connecting brackets, a quick-release pin (4) connected to the traction rod (1), and four quick-release pins (4) connected to the brackets (2); The traction rod (1) is connected to the connecting bracket (2) via a quick release pin (4), and the connecting bracket (2) is connected to the front part of the cargo platform body via four quick release pins (4); two main beams of the connecting bracket (2) are connected to two pairs of first wheel devices (3) via four quick release pins (4) to form a full-bridge wheel structure; the traction rod (1) has a steering function.

3. The device for traction and walking of the cargo platform of the airdrop system with the auxiliary loading / unloading capability according to claim 1 is characterized in that: The main wheel device comprises a half-axle (5), a pair of second wheel devices (6), and a quick-release pin (4) connected to the half-axle (5); the second wheel device (6) can be inserted into the mounting holes in the middle of both sides of the cargo platform body through the half-axle (5) and positioned by the quick-release pin (4) connected to it.

4. The device for traction and walking of the cargo platform of the airdrop system with the auxiliary loading / unloading capability according to claim 1 is characterized in that: The load-bearing wheel device comprises a half-axle (7), a third wheel device (8), and a quick-release pin (4) connected to the half-axle; the third wheel device (8) is inserted into the mounting holes at the rear of both sides of the cargo platform body through the half-axle (7) and is positioned by the quick-release pin (4) connected to it.

5. The device for traction and walking of the cargo platform of the airdrop system with the auxiliary loading / unloading capability according to claim 1 is characterized in that: The connecting piece of the jack (2) is divided into two parts, the high part is used for lifting when installing and removing the main wheel device, and the low part is used for lifting when installing and removing the front wheel device and the load-bearing wheel device; the bottom side of the jack (2) is provided with a fourth wheel device (9).

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