Multifunctional vehicle door inspection tool for urban rail vehicle

Abstract

The utility model relates to the technical field of urban rail transit engineering detection, in particular to a multifunctional vehicle door inspection tool for urban rail vehicles, which comprises a main body rod piece and a main ruler rod, an angle ruler plate is arranged on the top end surface of the main body rod piece, a movable plate is arranged on the top end surface of the main ruler rod, and a large straight screwdriver is arranged at the end part of the top end surface of the angle ruler plate. A square key rod is arranged on the surface of the bottom end of the main body rod piece, a small straight screwdriver is arranged at the end of the surface of one side of the movable plate piece, a movable ruler is arranged on the surface of the main ruler rod, a cross screwdriver is arranged on the surface of the bottom end of the movable ruler, and a wedge-shaped filler gauge is arranged at the end of the surface of the inner side of the main ruler rod. And diversified requirements of different vehicle maintenance scenes can be met. Through the highly integrated design, the tool greatly reduces the time of selecting, placing and replacing the tool by a maintainer in the maintenance process, so that the overall efficiency of vehicle inspection and debugging is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of urban rail transit engineering inspection technology, and in particular to a multi-functional door inspection tool for urban rail vehicles. Background Technology

[0002] A search of existing Chinese patent document CN217359022U discloses a testing fixture for the locking function of urban rail vehicle doors. The fixture includes a telescopic frame, a first pressure plate, and a second pressure plate. The telescopic frame includes a thrust generator and a telescopic rod. The thrust generator is located at one end of the telescopic rod and pushes the first pressure plate. The second pressure plate is located at the other end of the telescopic rod. By adjusting the telescopic rod, the first and second pressure plates come into contact with the door. The thrust generator generates an axial thrust on the first pressure plate. When the thrust generator outputs the required thrust for the test reaches the set value, it stops outputting the thrust. The testing personnel then test the door locking force and strength. The entire testing process uses this fixture, eliminating the need for traditional, entirely manual testing methods.

[0003] A search of existing Chinese patent document CN218343513U reveals a maintenance platform for urban rail vehicle doors, comprising multiple double-wheeled main canopies; these canopies are interconnected to form a detachable operating platform; footboards are laid on the operating platform; each double-wheeled main canopy has a support frame on its side to prevent the platform from tipping over, and the support frame has an adjustable angle; a protective railing is installed on the side of the operating platform away from the vehicle body; and 45-degree inclined ladders are installed at both ends of the operating platform, with one end of the ladder connected to the vehicle body to be inspected. This device provides a maintenance platform with a large operating space and high load-bearing capacity during overhaul.

[0004] The main function of urban rail vehicle door inspection tools is to detect and ensure the safety of the doors when closed. Traditional door inspection and debugging processes are very difficult. Workers need to use dozens of different inspection and debugging tools, each with varying specifications and uses. Due to the large number of tools, carrying them is extremely inconvenient. Furthermore, during maintenance, the selection of suitable tools, finding storage locations, and frequent tool changes waste a significant amount of valuable time, severely impacting work efficiency. Utility Model Content

[0005] The technical problem this invention aims to solve is to overcome the shortcomings of existing technologies and provide a multi-functional door inspection tool for urban rail vehicles. This tool addresses the significant difficulties encountered in traditional door inspection and debugging processes. Workers typically need dozens of different inspection and debugging tools, each with varying specifications and uses. The sheer number of tools makes them extremely inconvenient to carry. Furthermore, during maintenance, the selection of suitable tools, finding suitable locations, and frequent tool changes waste considerable time, severely impacting work efficiency.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] This utility model discloses a multi-functional door inspection tool for urban rail vehicles, comprising a main rod and a main ruler rod. An angle ruler plate is provided on the top surface of the main rod, and a movable plate is provided on the top surface of the main ruler rod. The angle ruler plate and the movable plate are connected and fixed by a fixing pin, and corresponding holes are provided in the middle of both the angle ruler plate and the movable plate. A large flathead screwdriver is provided at the end of the top surface of the angle ruler plate, and a lifting hole is provided in the middle of the large flathead screwdriver. A square key rod is provided on the bottom surface of the main rod, and a small flathead screwdriver is provided at the end of one side surface of the movable plate. A movable scale is provided on the surface of the main ruler rod, and a limit groove is provided on the inner side of the movable scale surface. The movable scale is connected and fixed to the main ruler rod surface by a slot through the limit groove. A Phillips head screwdriver is provided on the bottom surface of the movable scale, and a wedge-shaped feeler gauge is provided at the end of the inner surface of the main ruler rod.

[0008] As a further description of the above technical solution:

[0009] The main rod, angle ruler plate, and square key rod are integrated into one piece. The angle ruler plate has a fan-shaped angle scale on its surface. The angle ruler plate and the large flathead screwdriver are fixedly connected. The large flathead screwdriver has a circular hollowed-out mounting hole in the middle.

[0010] As a further description of the above technical solution:

[0011] The main ruler rod and the movable plate are connected as a single unit, and the movable plate and the small flathead screwdriver are connected and fixed by an L-shaped rod. The main ruler rod and the movable scale are fixed by a limiting groove and a locking groove, and the movable scale can move horizontally.

[0012] As a further description of the above technical solution:

[0013] Both the main scale rod and the movable scale have graduation marks on one side surface, and the movable scale and the Phillips screwdriver are fixedly connected. The main scale rod and the wedge gauge are fixedly connected, and the wedge gauge has graduation marks on one side surface.

[0014] This utility model has the following beneficial effects:

[0015] This invention integrates multiple inspection and debugging tools into a single unit, meeting the diverse needs of different vehicle maintenance scenarios. Through its highly integrated design, this tool significantly reduces the time maintenance personnel spend selecting, placing, and replacing tools during the maintenance process, thereby effectively improving the overall efficiency of vehicle inspection and debugging. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a front view schematic diagram of the overall structure of this utility model;

[0019] Figure 3 This is a rear view schematic diagram of the overall structure of this utility model;

[0020] Figure 4 This is a right-side view of the overall structure of this utility model;

[0021] Figure 5 This is a left-side view of the overall structure of this utility model;

[0022] Figure 6 This is a schematic diagram showing the overall structure of this utility model disassembled;

[0023] In the diagram: 1. Main rod; 2. Main ruler rod; 3. Angle ruler plate; 4. Movable plate; 5. Fixing pin; 6. Large flathead screwdriver; 7. Lifting hole; 8. Square key rod; 9. Small flathead screwdriver; 10. Movable ruler; 11. Limiting groove; 12. Slot; 13. Phillips screwdriver; 14. Wedge gauge. Detailed Implementation

[0024] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0025] In the attached diagram, all identical reference numerals refer to the same components.

[0026] Example 1

[0027] Reference Figure 1-6This utility model provides an embodiment of a multi-functional door inspection tool for urban rail vehicles, comprising a main rod 1 and a main ruler rod 2. An angle ruler plate 3 is provided on the top surface of the main rod 1, and a movable plate 4 is provided on the top surface of the main ruler rod 2. The angle ruler plate 3 and the movable plate 4 are connected and fixed by a fixing pin 5. Corresponding holes are provided in the middle of both the angle ruler plate 3 and the movable plate 4. A large flathead screwdriver 6 is provided at the end of the top surface of the angle ruler plate 3, and a lifting hole 7 is provided in the middle of the large flathead screwdriver 6. A square key rod 8 is provided on the bottom surface of the main rod 1. A small flathead screwdriver 9 is provided at the end of one side surface of the movable plate 4. A movable ruler 10 is provided on the surface of the main ruler rod 2, and a limiting groove 11 is provided on the inner side of the movable ruler 10. The movable ruler 10 is connected and fixed to the main ruler rod 2 by a slot 12 on the surface of the main ruler rod 2 through the limiting groove 11. A Phillips screwdriver 13 is provided on the bottom surface of the movable ruler 10, and a wedge gauge 14 is provided at the end of the inner surface of the main ruler rod 2.

[0028] The main rod 1, angle ruler plate 3, and square key rod 8 are integrated into one piece. The angle ruler plate 3 has a fan-shaped angle scale on its surface. The angle ruler plate 3 and the large flathead screwdriver 6 are fixedly connected. The lifting hole 7 in the middle of the large flathead screwdriver 6 is a circular hollow design.

[0029] The main ruler rod 2 and the movable plate 4 are connected as one piece, and the movable plate 4 and the small flathead screwdriver 9 are connected and fixed by an L-shaped rod. The main ruler rod 2 and the movable scale 10 are fixed by a limiting groove 11 and a slot 12, and the movable scale 10 can move horizontally.

[0030] Both the main scale rod 2 and the movable scale 10 have graduation marks on one side surface. The movable scale 10 and the Phillips screwdriver 13 are fixedly connected. The main scale rod 2 and the wedge gauge 14 are fixedly connected. The wedge gauge 14 has graduation marks on one side surface surface.

[0031] Specifically, its structure comprises a main rod 1, a main ruler rod 2, an angle ruler plate 3, a movable plate 4, a fixing pin 5, a large flathead screwdriver 6, a lifting hole 7, a square key rod 8, a small flathead screwdriver 9, a movable ruler 10, a limit stop groove 11, a slot 12, a Phillips screwdriver 13, and a wedge gauge 14, forming a multi-functional door inspection tool for urban rail vehicles. This tool integrates seven commonly used basic inspection tools: a square key, a flathead screwdriver, a Phillips screwdriver, a small screwdriver, a retractable ruler, an angle ruler, and a wedge gauge 14. The tool has magnetic properties, allowing it to be firmly attached during door inspection and adjustment, preventing slippage and further ensuring ease of operation and safety. The entire unit can be unfolded or folded. It is connected and fixed via the main rods on both sides of the main rod 1 and the main ruler rod 2, the main body of the angle ruler plate 3, and the movable plate 4, all secured by the fixing pin 5. The fixing pin 5 is cylindrical and allows for free rotation. When measuring angles, rotate the sector-shaped angle ruler 3 so that its two edges align with the included angle of the workpiece. Since the sector-shaped angle ruler 3 is marked with angle graduations, the workpiece angle can be determined by reading the value of the relative position of the scale and the main body. This process utilizes the basic principle of angle measurement, achieving angle quantification through the correspondence between the scale markings and the actual angle. A telescopic ruler is formed by the main ruler rod 2 and the movable ruler 10. The inner limiting groove 11 of the movable ruler 10 moves with the slot 12, allowing the movable ruler 10 to slide along the main ruler rod 2. It is marked with precise graduations. When measuring length, slide the movable ruler 10 so that one end aligns with one end of the workpiece and the other end aligns with the other end. The workpiece length is determined by reading the graduations of the movable ruler 10 and the main ruler rod 2. This principle is similar to ruler measurement, but the sliding structure improves the flexibility of aligning with different workpieces. The screwdrivers include a large flathead screwdriver 6, a small flathead screwdriver 9, and a Phillips head screwdriver 13. The large flathead screwdriver 6 features a standard flathead tip shape and can be used to tighten flathead screws; the small flathead screwdriver 9 can be used to tighten small-sized flathead screws; and the Phillips head screwdriver 13 has a Phillips head and is suitable for Phillips head screws. All three screwdriver tips are made of high-strength alloy steel, offering high hardness, good wear resistance, and the ability to withstand significant torque. The tools or devices can be suspended from display racks or other locations via the mounting hole 7 for easy display, retrieval, and management. The square key lever 8 can be used to open devices equipped with square keyholes. The wedge gauge 14 is used to measure the width of narrow gaps in urban rail vehicle doors; its accuracy is 0.1 mm, with precise graduations to meet various gap measurement needs. This highly integrated design of the multi-functional door inspection tool for urban rail vehicles effectively reduces the time maintenance personnel spend selecting, placing, and replacing tools during maintenance, improving inspection and debugging efficiency.

[0032] Working principle: The angle gauge 3 can be used to check whether the installation angle of the car door relative to the vehicle body meets the design standards. The accuracy of the door installation angle directly affects the normal opening and closing action, sealing performance, and compatibility with other components. For example, different types of doors, such as concealed doors and external doors, have specific angle requirements during installation. Measuring with the angle gauge 3 ensures the accurate installation position of the door, avoiding problems such as door jamming and poor sealing caused by angle deviation.

[0033] The extendable ruler formed by the main ruler 2 and the movable scale 10 is used to measure the length, width, thickness, and other dimensional parameters of the car door and related components. For example, it can measure the swing-out dimensions of the car door to check whether it meets the design specifications and ensure that the door can move freely. At the same time, it can also measure the dimensions of some key components in the door lock device and door operator system to determine whether they have exceeded the tolerance range due to wear or deformation. If they do, it may affect the normal function of the car door and requires repair or replacement.

[0034] Large flathead screwdrivers (6) and small flathead screwdrivers (9) are used for screws with flathead slots on some parts of subway car doors, used to fix components such as door panel trim and small electrical component housings. The flathead screwdrivers are compatible with these screws, allowing for tightening or loosening by rotation, facilitating the disassembly and installation of related components by maintenance personnel. Prying open components: During maintenance, it is sometimes necessary to pry open components with clips, such as the clips on the door trim panels. The flathead screwdriver can be inserted into the clip gaps using its flat head, and the component can be separated with appropriate prying force, facilitating the inspection and repair of the internal structure of the door. However, care must be taken to avoid damaging the component. Adjusting component position: For components requiring fine-tuning, the flathead screwdriver can be used as an auxiliary tool, gently prying or pushing the component to achieve the appropriate installation position or working state.

[0035] The Phillips head screwdriver 13 is used for removing and installing screws: Phillips head screws are common in subway car door structures and are used to fix key components such as door operating systems and door lock devices. The Phillips head screwdriver 13 can precisely fit these screws, allowing maintenance personnel to tighten or loosen them to complete the installation, removal, replacement, or fastening of components, ensuring the normal operation of all systems in the car door. Tightening critical connection points: The normal operation of the car door depends on the stable connections between its components. The Phillips head screwdriver 13 can be used to tighten screws at critical connection points to the appropriate torque, ensuring the reliability of the connection and preventing door malfunctions caused by loose screws, such as shaking or abnormal noises during door opening and closing.

[0036] The wedge gauge 14 can measure gaps in car door components, such as the gaps between different parts of the door, like the gap between the door and the door frame, or between door panels. Accurately measuring these gaps can help determine whether the door has deformed or worn over long-term use, ensuring good sealing when the door is closed and preventing malfunctions such as reduced sound and heat insulation due to excessive gaps, or malfunctions such as friction and interference between components due to insufficient gaps.

[0037] The square key bar 8 is used in the following scenarios:

[0038] 1. Emergency Door Unlocking: Viewed from the outside of the subway car, each car typically has one emergency entrance device on each side, operated with a four-way key (commonly 7x7). In emergencies such as fires or power outages that prevent the doors from opening normally, staff can use the four-way key to activate the external emergency unlocking function. The principle is that the four-way key rotates a specific component, releasing the lock's one-way constraint on the screw, thus releasing the lock and allowing staff to manually open the doors to guide passengers in emergency evacuation and ensure their safety.

[0039] 2. Isolating Faulty Doors: If a door malfunctions (such as a door mechanism failure or electrical fault), to prevent the malfunctioning door from affecting the normal operation of the subway and passenger safety, staff can use a four-way key to turn the isolation locking device located in the door mechanism. This mechanically locks the drive mechanism and simultaneously triggers a limit switch, sending a signal to the control system that the door is isolated and locked. This cuts off the door's circuit, isolating the malfunctioning door and preventing it from operating unexpectedly during operation. At this time, the malfunctioning door cannot open or close normally, and the train can continue to the terminal station or designated location for repairs.

[0040] 3. Open the equipment cabinet door, etc.

[0041] When a train malfunctions, staff can use the four-way key to open the doors of various equipment cabinets and then operate the switches on the relevant equipment to handle the problem. For example, this can be used to inspect, debug, or repair electrical and communication equipment. In addition, the four-way key can also be used to open doors to specific areas such as the driver's cab, facilitating staff access to those work areas.

[0042] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-functional door inspection tool for urban rail vehicles, comprising a main rod (1) and a main ruler rod (2), characterized in that, An angle ruler plate (3) is provided on the top surface of the main rod (1), and a movable plate (4) is provided on the top surface of the main rod (2). The angle ruler plate (3) and the movable plate (4) are connected and fixed by a fixing pin (5). Corresponding holes are provided in the middle of the angle ruler plate (3) and the movable plate (4). A large flathead screwdriver (6) is provided at the end of the top surface of the angle ruler plate (3), and a lifting hole (7) is provided in the middle of the large flathead screwdriver (6). The bottom surface of the main rod (1) The surface is provided with a square key bar (8), and a small flathead screwdriver (9) is provided at the end of one side surface of the movable plate (4). The surface of the main ruler (2) is provided with a movable scale (10), and a limit stop groove (11) is provided on the inner side of the surface of the movable scale. The limit stop groove (11) is connected and fixed to the groove (12) on the surface of the main ruler (2). A cross screwdriver (13) is provided on the bottom surface of the movable scale (10), and a wedge gauge (14) is provided at the end of the inner surface of the main ruler (2).

2. The multi-functional door inspection tool for urban rail vehicles according to claim 1, characterized in that, The main rod (1) is integrated with the angle ruler plate (3) and the square key rod (8). The angle ruler plate (3) has a fan-shaped angle scale on its surface. The angle ruler plate (3) and the large flathead screwdriver (6) are fixedly connected. The hoisting hole (7) in the middle of the large flathead screwdriver (6) is a circular hollow design.

3. The multi-functional door inspection tool for urban rail vehicles according to claim 1, characterized in that, The main ruler rod (2) and the movable plate (4) are connected as a whole, and the movable plate (4) and the small flathead screwdriver (9) are connected and fixed by an L-shaped rod. The main ruler rod (2) and the movable ruler (10) are fixed by a limiting groove (11) and a slot (12), and the movable ruler (10) can move horizontally.

4. The multi-functional door inspection tool for urban rail vehicles according to claim 1, characterized in that, The main ruler (2) and the movable ruler (10) are both provided with scale marks on one side surface, and the movable ruler (10) and the Phillips screwdriver (13) are fixedly connected. The main ruler (2) and the wedge gauge (14) are fixedly connected, and the wedge gauge (14) is provided with scale marks on one side surface.

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