Cart capable of preventing maintenance tools from being lost
By integrating pressure-sensitive plates, audible and visual warning devices, and airbags into the aircraft maintenance trolley, the problems of tool loss and collision damage are solved, achieving tool protection and preventing loss.
Patent Information
- Application Number
- CN202520154860.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-01-23
AI Technical Summary
Existing aircraft maintenance trolleys lack tool loss protection structures, which means that tools need to be re-customized when they are lost, delaying maintenance tasks.
Design a trolley to prevent the loss of maintenance tools. It uses a pressure-sensitive plate and an audible and visual alarm combined with an airbag device. The pressure-sensitive plate detects the placement of tools and alarms when they are missing, while the airbag device protects the tools when they are stored.
It effectively reminds users of missing tools, prevents tools from being lost, and protects tools from collision damage during storage, thereby improving maintenance efficiency.
Smart Images

Figure CN223736056U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aviation maintenance, specifically to a trolley for preventing the loss of maintenance tools. Background Technology
[0002] Aircraft maintenance trolleys are specially designed for aircraft maintenance work, primarily used for storing and transporting maintenance tools and spare parts. They are suitable for use in airports, airline maintenance departments, and similar locations. They help maintenance personnel complete aircraft maintenance tasks efficiently, improving work efficiency.
[0003] Because the tools used in aircraft maintenance are custom-made, if any are lost, there are two problems: on the one hand, the need to re-customize the tools, and on the other hand, the delay in aircraft maintenance tasks. Currently, the trolleys used for aircraft maintenance lack a structure to prevent tools from being lost, which is a deficiency. Utility Model Content
[0004] (I) Purpose of the utility model
[0005] To address the technical problems existing in the background art, this utility model proposes a trolley to prevent the loss of maintenance tools, which features enclosed storage of maintenance tools and anti-loss early warning.
[0006] (II) Technical Solution
[0007] To solve the above-mentioned technical problems, this utility model provides a trolley to prevent the loss of maintenance tools, including a symmetrically arranged base and a cross plate. The base and the cross plate are connected by a support column. A protruding handrail is formed at one end of the support column near the cross plate. Casters for walking are installed at the bottom corner of the base.
[0008] A tool table is installed above the horizontal plate, and a screen is installed at one end of the tool table;
[0009] The toolbox mechanism includes toolboxes spaced apart on the tool table. Each toolbox has a built-in pressure-sensitive plate and a movable lid. A transparent observation window is installed in the middle of the lid, and an audible and visual alarm is installed on the top.
[0010] The cylinder mechanism includes a cylinder mounted at the rear of the toolbox, with a movable piston rod mounted at the output end of the cylinder, and the other end of the piston rod connected to the box cover via a connecting rod.
[0011] Preferably, the maintenance tools are placed within the area enclosed by the toolbox and the box cover.
[0012] Preferably, the upper part of the pressure-sensitive plate is in contact with the maintenance tool, and the pressure-sensitive plate is connected to the audible and visual alarm signal.
[0013] Preferably, the piston rod and the connecting rod are combined in a U-shape, and the lid moves synchronously with the combined assembly.
[0014] Preferably, the inner cavity of the lid holds an airbag device, which is an elastic structure that deforms when inflated or deflated.
[0015] Preferably, the inclined section of the toolbox is a sponge component.
[0016] The above-mentioned technical solution of this utility model has the following beneficial technical effects:
[0017] 1. If the repair tools are not placed in the tool box after the repair is completed, the pressure-sensitive plate will not be pressed down by the repair tools. When there is a lack of contact pressure, the sound and light alarm will be activated to remind the user to pay attention to the missing repair tools and improve the ability to prevent the repair tools from being lost.
[0018] 2. The toolbox features an openable, enclosed design with an airbag system, which protects the tools during storage and effectively prevents damage from collisions when the cart is moved. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the toolbox mechanism of this utility model;
[0021] Figure 3 This is a cross-sectional view of the toolbox mechanism of this utility model.
[0022] Figure label:
[0023] 11. Base; 12. Support column; 13. Horizontal plate; 14. Handrail; 15. Casters; 2. Tool table; 3. Screen; 41. Tool box; 42. Pressure-sensitive plate; 43. Box lid; 44. Observation window; 45. Audible and visual alarm; 51. Cylinder; 52. Piston rod; 53. Connecting rod; 6. Airbag device. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.
[0025] like Figure 1-3As shown, the present invention proposes a trolley to prevent the loss of maintenance tools, including a symmetrically arranged base 11 and a horizontal plate 13. The base 11 and the horizontal plate 13 are connected by a support column 12. A protruding handrail 14 is formed at one end of the support column 12 near the horizontal plate 13. Casters 15 for walking are installed at the bottom corner of the base 11.
[0026] A tool table 2 is installed above the horizontal plate 13, and a screen 3 is installed at one end of the tool table 2;
[0027] The toolbox mechanism includes toolboxes 41 spaced apart on the tool table 2. The toolboxes 41 have built-in pressure-sensitive plates 42 and are equipped with movable lids 43. A transparent observation window 44 is installed in the middle of the lids 43 and an audible and visual alarm 45 is installed on the top.
[0028] The cylinder mechanism includes a cylinder 51 installed at the rear of the toolbox 41. A movable piston rod 52 is installed at the output end of the cylinder 51, and the other end of the piston rod 52 is connected to the box cover 43 via a connecting rod 53.
[0029] It should be noted that the area enclosed by the tool box 41 and the lid 43 contains repair tools. Multiple independent tool box mechanisms are set on the tool table 2 to store different repair tools.
[0030] In this embodiment, when performing maintenance work, the trolley is pushed to the maintenance area by the bottom casters 15. When the maintenance tools are retrieved, the piston rod 52 is driven by the cylinder 51 to extend upward, which drives the box cover 43 connected by the connecting rod 53 to lift upward, exposing the maintenance tools for retrieval.
[0031] When the repair tools are not placed in the tool box 41 after use, the pressure-sensitive plate 42 is not pressed down by the repair tools. Under normal storage conditions, the upper part of the pressure-sensitive plate 42 is in contact with the repair tools. The pressure-sensitive plate 42 is connected to the sound and light alarm 45. When there is a lack of contact pressure, the sound and light alarm 45 will provide sound and light alarm indication to remind the user to pay attention to the missing repair tools and improve the ability to prevent the repair tools from being lost.
[0032] It is understandable that the piston rod 52 and connecting rod 53 are combined in a "U-shaped" structure, and the cover 43 moves synchronously with the combined structure.
[0033] To further protect the repair tools, the inner cavity of the cover 43 holds an airbag device 6. The airbag device 6 is an elastic structure that can be inflated and deflated. When the repair tools are placed in the tool box 41, the cover 43 and the tool box 41 are closed. The pressure-sensitive plate 42 detects the repair tools stored on top. At this time, the airbag device 6 is supplied with air by an external air source device to inflate and deform, sealing the gap between the repair tools and the storage area, thus solving the problem of the repair tools colliding with the storage gap due to the shaking of the trolley.
[0034] It is understandable that the inclined section of the toolbox 41 is a sponge component, and the maintenance tools are embedded in the sponge component under the action of gravity, thus being externally surrounded and protected.
[0035] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.
Claims
1. A cart for preventing loss of service tools, characterized by, It comprises a symmetrically arranged base (11) and a horizontal plate (13), the base (11) and the horizontal plate (13) are connected by a support column (12), the support column (12) is formed with a convex handrail (14) near one end of the horizontal plate (13), the bottom corner of the base (11) is provided with a walking caster (15); A tool table (2) is installed above the horizontal plate (13), one end of the tool table (2) is provided with a screen (3); The tool box mechanism comprises a tool box (41) installed on the tool table (2) in a spaced manner, the tool box (41) is internally provided with a pressure-sensitive plate (42), and is provided with a movable box cover (43) on the top, the middle part of the box cover (43) is provided with a transparent observation window (44), and the upper part is provided with an audible and visual alarm (45); The cylinder mechanism comprises a cylinder (51) installed at the back of the tool box (41), the output end of the cylinder (51) is provided with a movable piston rod (52), the other end of the piston rod (52) is connected to the box cover (43) through a connecting rod (53).
2. A cart for preventing loss of service tools as defined in claim 1, wherein The tool box (41) and the box cover (43) enclose an interval in which repair tools are placed.
3. The cart of claim 1, wherein, The upper part of the pressure-sensitive plate (42) is in contact with the repair tools, and the pressure-sensitive plate (42) is signal connected with the audible and visual alarm (45).
4. The cart of claim 1, wherein, The combination of the piston rod (52) and the connecting rod (53) is in a "U-shaped" structure, and the box cover (43) moves synchronously with the combination.
5. The cart of claim 1, wherein, The inner cavity of the box cover (43) holds an air bag device (6), and the air bag device (6) is an elastic structure that can change shape when inflated and deflated.
6. The cart of claim 1, wherein, The inclined section of the tool box (41) is a sponge member.