Transfer trolley for key and heavy parts of helicopter

Abstract

The utility model discloses a helicopter key and heavy part transfer trolley which comprises a frame, a handle and wheels, the handle is located at one end of the frame, the four wheels are located at four feet of the bottom of the frame respectively, the frame sequentially comprises a top layer, a middle layer and a bottom layer from top to bottom, and trace buffer plates are laid on the top layer and the bottom layer respectively. A plurality of trace grooves are formed in the trace buffer plate and used for embedding and placing the heavy parts in the corresponding shapes, the trace grooves in the bottom layer are larger than the trace grooves in the top layer, so that the heavy parts capable of being placed on the bottom layer are larger than the heavy parts capable of being placed on the top layer, and each trace groove is provided with a corresponding part identifier; the number of the middle layer can be one or more, a plurality of cross beams are arranged on the middle layer at intervals, a plurality of semicircular grooves are formed in the cross beams at intervals, and the semicircular grooves are used for limiting and placing cylindrical heavy parts; the bottom layer can be one layer or multiple layers. The transfer trolley can meet the requirements of safe storage, transfer and efficient counting of pull rods, rocker arms, supports and bolts at the same time.

Description

Technical Field

[0001] This utility model belongs to the field of aircraft maintenance equipment technology, and in particular relates to a helicopter critical parts transfer vehicle. Background Technology

[0002] With the rapid development of my country's aerospace industry, the precision requirements for aircraft components are constantly increasing, leading to a greater awareness of component protection. Critical components in helicopters play a vital role in aircraft performance and condition; even minor damage can have a significant impact on flight performance and seriously endanger flight safety. As a highly precise and complex aircraft, helicopters have numerous components with complex structures and diverse sizes. Even a seemingly insignificant nick or crack in an ordinary component can seriously jeopardize flight safety. Therefore, protecting helicopter components is crucial, and protecting critical components is of paramount importance.

[0003] In existing helicopter repair processes, critical components, including levers, rocker arms, and bolts, are typically disassembled from the helicopter and placed on racks around the aircraft before being transferred to the next stage of repair. This process has the following drawbacks:

[0004] (1) Significant security loopholes: The shelves used temporarily for storing critical parts did not take into full consideration the specific size and unique shape of the parts at the beginning of the design. For cylindrical parts, such as pull rods and drive shafts, it is difficult to keep them stable on the shelves, and they are very easy to roll and fall, which can cause irreparable damage.

[0005] (2) Worrying work efficiency: Key components need to be placed on shelves first, and after all parts are disassembled, they are transferred to the next process for repair. During this process, the staff have to repeatedly count the components. Since there are many key components on the helicopter, there are hundreds of them in total, and they are different in size and shape. During the transfer and handover, the staff usually carry them by hand to the next process workshop. The repaired parts are then carried to the work area by the staff. The repeated counting process and unnecessary secondary handling process, as well as the problem of the placement of parts after the handover, increase the cost of 6S management, and cause a lot of waste of human and time resources, which greatly increases the production cost. Moreover, the probability of human error is quite high, and the back-and-forth transfer is prone to bumps and knocks, which is not conducive to counting the quantity.

[0006] (3) High risk of transportation: During transportation, due to the complex and ever-changing road conditions, bumps and undulations are unavoidable. In addition, the lack of effective protective tooling for cylindrical parts causes the parts to roll and collide with each other frequently in the transportation vehicle, which greatly increases the risk of damage to the parts.

[0007] Existing technologies have not yet effectively solved the above-mentioned technical problems, so it is particularly important to develop a mechanism that can effectively protect and efficiently transfer critical components of aircraft. Utility Model Content

[0008] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a helicopter heavy parts transport vehicle with good protection and easy sorting and counting.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0010] A helicopter-mounted critical component transport vehicle includes a frame, handles, and wheels. The handles are located at one end of the frame, and there are four wheels located at the four feet at the bottom of the frame. The frame consists of a top layer, a middle layer, and a bottom layer from top to bottom. The top and bottom layers are each covered with a shaped buffer plate. The shaped buffer plate has multiple shaped grooves for fitting and placing critical components of corresponding shapes. The shaped grooves in the bottom layer are larger than those in the top layer, and each shaped groove has a corresponding part label. The middle layer can be one or more layers, and it is provided with multiple adjustable-spaced crossbeams. The crossbeams have multiple semi-circular grooves for positioning and placing cylindrical critical components. The bottom layer can be one or more layers.

[0011] Preferably, in the aforementioned helicopter heavy component transfer vehicle, the shaped buffer plate is an EVA foam rubber composite board.

[0012] Preferably, in the aforementioned helicopter heavy component transport vehicle, the inner surface of the groove is provided with anti-slip texture.

[0013] Preferably, the outer perimeter of the top, middle and bottom layers of the aforementioned helicopter heavy parts transport vehicle is equipped with detachable rubber blocks, and the inward-facing side of the rubber blocks is provided with anti-slip texture.

[0014] Preferably, in the aforementioned helicopter heavy parts transport vehicle, the frame is made of lightweight aluminum alloy profiles with anodized surface treatment.

[0015] Preferably, in the aforementioned helicopter heavy component transport vehicle, the frame is smaller at the top and larger at the bottom, so that the area of ​​the top layer, middle layer and bottom layer increases sequentially.

[0016] Preferably, in the aforementioned helicopter heavy component transfer vehicle, the spacing of the crossbeams is adjustable from 200mm to 600mm.

[0017] Preferably, in the aforementioned helicopter-mounted heavy parts transfer vehicle, each tracking groove is equipped with a detection element for detecting whether an item is placed in the tracking groove, and a corresponding alarm light is provided next to the tracking groove, the alarm light being connected to the detection element.

[0018] Preferably, the helicopter-mounted heavy component transport vehicle also includes a controller and a display. The controller is connected to the detection element and the display respectively, and is used to receive detection information and transmit the detection results to the display. The controller and the display are detachably mounted on one end of the frame opposite to the handle.

[0019] Preferably, in the aforementioned helicopter critical component transfer vehicle, a camera is installed above the intermediate layer. The camera is connected to a controller, which has an image recognition function to cooperate with the camera to identify critical components placed in the intermediate layer.

[0020] Compared with the prior art, the advantages of this utility model are:

[0021] (1) The helicopter critical parts transfer vehicle of this utility model, through its multi-layer design and the combination of shape-guided buffer plates and adjustable-spaced crossbeams, can simultaneously meet the needs of orderly storage of tie rods, rocker arms, supports, and bolts, and facilitate transfer and inventory. Since the tie rods of the helicopter control and transmission systems vary in length, longer tie rods can be placed in the middle layer through two to three crossbeams, while smaller tie rods, rocker arms, and supports that need to be placed stably are placed on the top layer, and larger and heavier ones are placed on the bottom layer. The shape-guided buffer plates on the top and bottom layers are all carved with grooves of appropriate depth according to the precise contours of the parts, fundamentally avoiding the risk of parts rolling. The shape-guided grooves on the top layer are designed to be smaller than those on the bottom layer, so that small parts are placed on the top layer and larger and heavier parts are placed on the bottom layer. This makes the center of gravity of the transfer vehicle lower and more stable, preventing tipping and avoiding bumps and scratches during handling or storage. This better meets the protection requirements of critical parts of the helicopter control and transmission systems during the transfer process with other workshops.

[0022] (2) Due to the large number of levers, rocker arms, and supports in the helicopter control and transmission system, totaling hundreds of parts, it is necessary to count all disassembled parts during the disassembly and assembly stage to ensure the smooth completion of the entire stage without any omissions. At the same time, it is also necessary to count the number of handover parts conveniently and quickly when handing over to other workshops, in accordance with the requirements of visual management. The helicopter critical parts transfer vehicle of this utility model can greatly facilitate the staff's counting and daily management work by setting up exclusive identification for each part at each storage point, covering key information such as system ownership, model details, and color differentiation. During the transfer process, one person can safely transfer and count the critical parts, and place the parts reasonably and orderly on the transfer vehicle, which meets the requirements of workshop 6S management. The labor cost and 6S management cost are effectively controlled, which is highly consistent with the workshop visual management standard and helps enterprises reduce costs and increase efficiency.

[0023] (3) The helicopter critical parts transfer vehicle of this utility model has top and bottom shaped buffer plates that are customized according to the size and shape characteristics of different critical parts. The shaped buffer plates that match the critical parts can be customized according to the specific model of the helicopter. Therefore, the transfer vehicle can be widely used in various helicopter maintenance scenarios by cooperating with specific shaped buffer plates.

[0024] (4) The helicopter critical parts transfer vehicle of this utility model can quickly locate empty positions and count the number of critical parts by setting corresponding detection elements and alarm lights for each groove.

[0025] (5) The helicopter critical parts transfer vehicle of this utility model can realize intelligent and visual summary and inventory of helicopter critical parts by adding a controller and a display, which greatly improves the efficiency of transfer and handover between different departments. The controller and display can be detached and installed, which is convenient to configure and use according to the needs of the site.

[0026] (6) The helicopter heavy parts transfer vehicle of this utility model can accurately identify the shape of the parts by combining the image recognition of the camera and the controller, which solves the problem of the inconvenience of fixed-point detection of parts on the middle layer crossbeam and realizes intelligent, visual and efficient inventory of all areas of the transfer vehicle. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the helicopter critical parts transfer vehicle in a specific embodiment of this utility model.

[0028] Figure 2 This is a simplified schematic diagram of the traceable buffer plate of the helicopter critical parts transfer vehicle in a specific embodiment of this utility model.

[0029] Figure 3 This is a schematic diagram of the detection and control circuit connection of the helicopter critical parts transfer vehicle in a specific embodiment of this utility model.

[0030] Legend: 1. Frame; 11. Top layer; 12. Middle layer; 121. Crossbeam; 1211. Semi-circular groove; 13. Bottom layer; 14. Rubber stop; 2. Handlebar; 3. Wheel; 4. Trace-guided buffer plate; 41. Trace groove; 411. Detection element; 412. Warning light; 42. Part label; 5. Controller; 6. Display; 7. Camera. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and specific preferred embodiments, but this does not limit the scope of protection of the present invention.

[0032] Explanation of technical terms:

[0033] Tie rod: mainly composed of bearings with handles at both ends and a rod body, used to transmit the force given by the driver to the point of force application.

[0034] Rocker arm: A mechanical structure that is connected by levers, whose main function is to transmit power or change the direction of force.

[0035] Figure 1 This invention illustrates a specific embodiment of a helicopter critical component transport vehicle, comprising a frame 1, handles 2, and wheels 3. The handles 2 are located at one end of the frame 1, and there are four wheels 3, located at the four feet at the bottom of the frame 1. The frame 1 comprises, from top to bottom, a top layer 11, a middle layer 12, and a bottom layer 13. The top layer 11 and the bottom layer 13 are respectively covered with shaped buffer plates 4, which have multiple shaped grooves 41 for fitting and placing critical components of corresponding shapes. The shaped grooves 41 of the bottom layer 13 are larger than those of the top layer 11, so that the critical components that can be placed in the bottom layer 13 are larger than those that can be placed in the top layer 11. Each shaped groove 41 has a corresponding part identification 42. The middle layer 12 can be one or more layers, and multiple crossbeams 121 are spaced apart in the middle layer 12. Multiple semi-circular grooves 1211 are spaced apart on the crossbeams 121 for limiting the placement of cylindrical critical components. The bottom layer 13 can be one or more layers.

[0036] Specifically, the helicopter-mounted heavy parts transfer vehicle in this embodiment is divided into four layers, each with a clearly defined function. The top layer 11 is equipped with a carefully customized, patterned buffer plate 4, such as... Figure 2 As shown, the first layer is a high-density EVA shaped foam board, 50mm thick, with a Shore hardness of 60±5. It features shaped grooves 41, specifically designed to accommodate small components such as tie rods, rocker arms, supports, and bolts, ensuring their stability during transport. The second and third layers are intermediate layers 12, each with four crossbeams 121 spaced apart. Semi-circular grooves 1211 are precisely carved into the crossbeams 121. This design is particularly suitable for storing longer tie rods, effectively preventing displacement and collisions during transport. The spacing between the crossbeams 121 in the intermediate layer 12 is adjustable, ranging from 200mm to 600mm. The fourth layer is the bottom layer 13, on which a patterned buffer plate 4 is laid. The material is the same as the patterned buffer plate 4 of the top layer 11, and a second patterned groove 41 is opened. The groove depth is 15mm to 20mm, with a 2mm gap reserved, which can place some larger parts. The bottom of the frame 1 uses a combination of two directional wheels and two omnidirectional wheels. The combination of directional wheels and omnidirectional wheels has a load-bearing capacity of ≥500kg, giving the transfer vehicle flexible and convenient movement characteristics, and enabling it to move freely in complex workshop environments.

[0037] The transfer vehicle in this embodiment, through its multi-layer design and the combination of shape-guided buffer plates 4 and adjustable-spaced crossbeams 121, can simultaneously meet the needs of orderly storage of tie rods, rocker arms, supports, and bolts, facilitating transfer and inventory. The shape-guided buffer plates 4 on both the top layer 11 and the bottom layer 13 are carved with appropriately deep grooves according to the precise contours of the parts, fundamentally avoiding the risk of parts rolling. The shape-guided grooves 41 on the top layer 11 are designed to be smaller than those on the bottom layer 13, allowing smaller parts to be placed on the top layer 11 and larger, heavier parts on the bottom layer 13. This lowers the center of gravity of the transfer vehicle, making it more stable and preventing tipping. This better meets the protective requirements of critical components in helicopter control and transmission systems during transfer and handover to other workshops. Each storage point is clearly marked with a unique part identification label, covering key information such as system affiliation, model details, and color differentiation, greatly facilitating the inventory, handover, and daily management work of the staff.

[0038] In this embodiment, the inner surface of the groove 41 is provided with anti-slip texture to avoid the risk of rolling and falling of the heavy parts, and can better maintain the stability of the parts during the transportation process.

[0039] In this embodiment, detachable rubber blocks 14 are installed on the periphery of the top layer 11, the middle layer 12, and the bottom layer 13. The inward-facing side of the rubber blocks 14 is provided with anti-slip texture. Detachable rubber blocks 14 are installed on the periphery of each layer of the transfer vehicle, and anti-slip texture is added to the contact surface of the parts to make its coefficient of friction ≥0.6.

[0040] In this embodiment, the frame 1 is made of lightweight aluminum alloy profile with anodized surface treatment. When selecting materials, the inventors of this application conducted material property studies on aluminum alloy, plastic, steel, wood, etc., and ultimately decided to use lightweight aluminum alloy profile with anodized surface treatment. This simultaneously satisfies the characteristics of being lightweight, environmentally friendly, having good cushioning and shock absorption, corrosion resistance, easy to form, possessing certain compressive strength, and low cost. Most of the heavy components on helicopters are also made of aluminum alloy (Ly12).

[0041] In this embodiment, the traceable buffer plates 4 of the top layer 11 and the bottom layer 13 are both EVA foam rubber composite boards. EVA foam + rubber composite materials can be ordered from the market; they are lightweight, have high specific strength, can absorb impact loads, have excellent cushioning and shock absorption performance, heat insulation performance, and excellent electrical insulation performance. They are also corrosion-resistant, mildew-resistant, and highly durable, while being easy to mold, providing a comprehensive protective barrier for parts to prevent damage from drops and impacts. Standard stainless steel fasteners are used for the connectors. The transport vehicle consists of four layers, including a pair of omnidirectional wheels and a pair of directional wheels at the bottom, with overall dimensions of 120cm long, 83cm wide, and 113cm high.

[0042] In this embodiment, the frame 1 is smaller at the top and larger at the bottom, so that the area of ​​the top layer 11, the middle layer 12 and the bottom layer 13 increases sequentially. The design of being smaller at the top and larger at the bottom helps to maintain a stable center of gravity and avoid tipping over, making the transport vehicle more stable and reliable when stationary or in operation.

[0043] In this embodiment, the spacing of the crossbeams 121 can be adjusted from 200mm to 600mm, and the flexible spacing adjustment can be applied to rods of different lengths.

[0044] In this embodiment, a further improvement is made: a detection element 411 is provided in each trace slot 41 to detect whether an item is placed in the trace slot 41. A corresponding alarm light 412 is provided next to the trace slot 41, and the alarm light 412 is connected to the detection element 411. In this embodiment, the detection element 411 adopts a mechanical contact switch, such as a tactile switch similar in principle to a keyboard key. When the trace slot 41 is empty, the circuit is connected, and the alarm light 412 is lit. When an item is placed in the trace slot 41, pressing the contact switch disconnects the circuit, and the alarm light 412 is off. During inventory, the alarm light 412 is lit only in the positions where no parts are placed, thus enabling quick location and inventory. The alarm light 412 and the part identification 42 are combined into one design, making the panel layout simpler and clearer.

[0045] Of course, in other embodiments, the detection element 411 can also be other existing detection elements 411, such as infrared reflection sensors or pressure sensors. These detection elements 411 can achieve good detection results, but the cost is slightly higher than that of mechanical contact switches.

[0046] In this embodiment, as further improved, such as Figure 3 As shown, the transfer vehicle also includes a controller 5 and a display 6. The controller 5 is connected to the detection element 411 and the display 6 respectively, and is used to receive detection information and transmit the detection results to the display 6. The controller 5 and the display 6 are detachably mounted on one end of the frame 1 opposite to the handle 2. The controller 5 can be a conventional PLC, and the display 6 can also be a conventional display 6. In this embodiment, with the support of the controller 5 and the display 6, intelligent and visual inventory of critical components of helicopters can be realized, which greatly improves the efficiency of transfer and handover between different departments. The controller 5 and the display 6 are detachable and easy to configure and use according to on-site needs.

[0047] In this embodiment, a further improvement is made by installing cameras 7 above the intermediate layer 12, specifically on the lower surface of the top layer 11 and the lower surface of the second layer, respectively. These cameras 7 are used to acquire images of items placed on the crossbeams 121 of the second and third layers. The cameras 7 are connected to the controller 5. In this improved solution, the controller 5 has image recognition capabilities, used in conjunction with the cameras 7 to identify the components placed on the intermediate layer 12. Based on existing image processing algorithms from the OpenCV library, images of the intermediate layer 12 are acquired through visual detection, and background subtraction and contour analysis are performed to output the detection results. Of course, in other embodiments, other existing image processing algorithms can also be used. This embodiment, through the image recognition cooperation of the cameras 7 and the controller 5, can accurately identify the shape of components, solving the problem of inconvenient fixed-point detection of parts on the crossbeams 121 of the intermediate layer 12.

[0048] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A helicopter-mounted heavy parts transfer vehicle, characterized in that: The vehicle includes a frame (1), handlebars (2), and wheels (3). The handlebars (2) are located at one end of the frame (1). There are four wheels (3), located at the four feet at the bottom of the frame (1). The frame (1) consists of a top layer (11), a middle layer (12), and a bottom layer (13) from top to bottom. The top layer (11) and the bottom layer (13) are respectively covered with shape-marking buffer plates (4). The shape-marking buffer plates (4) have multiple shape-marking grooves (41) for fitting and placing corresponding shapes. The shape of the key component; the groove (41) of the bottom layer (13) is larger than the groove (41) of the top layer (11), and each groove (41) is provided with a corresponding part mark (42); the middle layer (12) can be one or more layers, and the middle layer (12) is provided with multiple adjustable beams (121) at intervals, and multiple semi-circular grooves (1211) are provided on the beams (121) at intervals for limiting the placement of cylindrical key components; the bottom layer (13) can be one or more layers.

2. The helicopter heavy parts transfer vehicle according to claim 1, characterized in that: The tactile buffer plate (4) is an EVA foam rubber composite plate.

3. The helicopter heavy parts transfer vehicle according to claim 1, characterized in that: The inner surface of the groove (41) is provided with anti-slip texture.

4. The helicopter heavy parts transfer vehicle according to claim 1, characterized in that: The outer perimeter of the top layer (11), the middle layer (12) and the bottom layer (13) are all equipped with detachable rubber blocks (14), and the inward side of the rubber blocks (14) is provided with anti-slip texture.

5. The helicopter heavy parts transfer vehicle according to claim 1, characterized in that: The frame (1) is made of lightweight aluminum alloy profile and the surface is anodized.

6. The helicopter heavy parts transfer vehicle according to claim 1, characterized in that: The frame (1) is smaller at the top and larger at the bottom, so that the area of ​​the top layer (11), the middle layer (12) and the bottom layer (13) increases sequentially.

7. The helicopter heavy parts transfer vehicle according to claim 1, characterized in that: The spacing of the crossbeam (121) can be adjusted from 200mm to 600mm.

8. The helicopter heavy parts transfer vehicle according to any one of claims 1 to 7, characterized in that: Each trace slot (41) is equipped with a detection element (411) for detecting whether an item is placed in the trace slot (41). A corresponding alarm light (412) is provided next to the trace slot (41), and the alarm light (412) is connected to the detection element (411).

9. The helicopter heavy parts transfer vehicle according to claim 8, characterized in that: It also includes a controller (5) and a display (6), the controller (5) being connected to the detection element (411) and the display (6) respectively, for receiving detection information and transmitting the detection results to the display (6); the controller (5) and the display (6) are detachably mounted on one end of the frame (1) opposite to the handle (2).

10. The helicopter heavy parts transfer vehicle according to claim 9, characterized in that: A camera (7) is mounted on the top of the intermediate layer (12). The camera (7) is connected to a controller (5). The controller (5) has an image recognition function and is used to cooperate with the camera (7) to identify the critical components placed on the intermediate layer (12).

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