Falling-off prevention structure for main air hose

Abstract

The utility model discloses an anti-disengaging and anti-clamping structure for a main air hose, and belongs to the field of railway vehicle parts. The main air hose anti-disengaging and clamping structure comprises a connecting plate and two fixing rings fixed to the two ends of the connecting plate, and the fixing rings are used for being arranged on transition joints at the two ends of a main air hose connector in a sleeving mode and forming limiting with the transition joints. Through a series of elaborately designed assemblies and connection modes, the main air hose anti-disengaging structure effectively solves the problem that a main air hose connector possibly disengages accidentally in the using process, and the stability and safety of a system are ensured.

Description

Technical Field

[0001] The utility model belongs to the field of rail vehicle parts and specifically relates to a main air hose anti-dropping and carding structure. Background Art

[0002] Main air hose connector 1 (such as Figure 1 The main air hose 8 is an important part of the railway locomotive vehicle system, which is mainly used to connect the main air hose 8 between locomotive vehicles to realize the transmission and supply of compressed air (main air). The main air is mainly used for equipment and facilities such as air springs, plug doors, and toilets.

[0003] When the main air hose connector is disconnected, it will affect the normal operation of the locomotive air supply and the air supply of equipment and facilities such as vehicle air springs and toilets. After disconnection, the main air hose droops below the rail surface and is easy to hit the equipment and facilities on the track. It is easy to get caught and pulled off when passing through the turnout. When the hose connector is left at the turnout point, it affects the normal operation of the turnout and may cause the train to derail. If the main air hose is found to be disconnected during the journey, it is necessary to stop the train temporarily to deal with it, which seriously interferes with the normal production and transportation order of the railway.

[0004] Through the investigation of the anti-detachment status of the main air hose connectors in each station section, there are mainly three ways:

[0005] The first is the lying-flat type. Without taking any anti-opening measures, the main air hose may be detached.

[0006] The second is the bundling type. It uses iron wire or cable ties to bind, which has limited anti-detachment ability and is inconvenient to install and disassemble. It can solve the problem of detachment to a certain extent, but it cannot solve the problem of the main air hose drooping and hitting the equipment in the track or being pulled off after detachment.

[0007] The third is the connection type. The main air hose is equipped with a fixing ring and then connected with wire. This connection method cannot prevent the hoses from being disconnected, but can only ensure that the main air hose does not hit the equipment between the tracks after being disconnected.

[0008] In order to ensure the safe operation of buses, there is an urgent need for a main air hose connector anti-detachment measure to address the potential safety hazard of the main air hose connector detaching during daily use of buses, so as to ensure that the main air hose connector will no longer detach when passing through a small radius curve without wind pressure when leaving the warehouse, or be hit by foreign objects on the way and detached. Utility Model Content

[0009] In view of the shortcomings of the prior art, the utility model innovatively proposes a main air hose anti-dropping structure. The main air hose anti-dropping structure effectively solves the problem of accidental dropout of the main air hose connector during use through a series of carefully designed components and connection methods, ensuring the stability and safety of the system.

[0010] In order to solve the above technical problems, the utility model is implemented through the following technical solutions:

[0011] A main air hose anti-dropping structure comprises a connecting plate and two fixing rings fixed at both ends of the connecting plate. The fixing rings are used to be sleeved on transition joints at both ends of a main air hose connector and form a limit therewith.

[0012] Preferably, the fixing ring and the transition joint are both polygonal structures, and the fixing ring and the transition joint cannot rotate relative to each other after being assembled.

[0013] Preferably, the fixing ring and the transition joint are both hexagonal structures.

[0014] Preferably, the head and tail ends of the fixing ring are connected by a first fastener to form a connecting ear extending outward, and the first fastener is installed at the inner end of the connecting ear.

[0015] Preferably, the first fastener comprises a screw, a nut, a flat washer and a spring washer, and the screw is provided with a cotter pin for preventing it from falling off.

[0016] Preferably, the connecting plate and the fixing ring are connected and fixed by a second fastener, and the second fastener is installed on the outer end of the connecting ear.

[0017] Preferably, the second fastener comprises a fixing pin and a flat washer, and the fixing pin is provided with a split pin for preventing it from falling off.

[0018] Preferably, an anti-drop chain is connected between the fixing ring and the second fastener.

[0019] Preferably, the length of the connecting plate is adapted to the distance between the two ends of the main air hose connector.

[0020] Preferably, the connecting plate, the fixing ring, the first fastener, the second fastener and the anti-drop chain are all made of stainless steel.

[0021] Compared with the prior art, the utility model has the following significant advantages:

[0022] (1) The utility model has a simple structural design, adopts basic geometric shapes (such as hexagons) and common fastening elements (such as screws, nuts, and fixing pins), and does not require modification of the original vehicle equipment, which not only reduces manufacturing costs but also facilitates large-scale production and maintenance.

[0023] (2) The fixing ring and transition joint of the utility model adopt a polygonal structure (preferably a hexagonal structure) to ensure that the two cannot rotate relative to each other after assembly, thereby effectively limiting the movement range of the connector and preventing disengagement due to rotation under vibration or external force.

[0024] (3) The utility model ensures a stable connection between the fixing ring and the connecting plate and between the fixing ring and the transition joint by setting the first fastener (including screws, nuts, flat washers, spring washers and split pins) and the second fastener (fixing pins, flat washers and split pins), thereby improving the anti-slip performance. In particular, the use of split pins can maintain a tight state even under long-term vibration or external impact, preventing the fasteners from loosening or falling off.

[0025] (4) The addition of the anti-drop chain in the present invention has the effect of preventing the fixing pin from being lost.

[0026] (5) The utility model uses stainless steel as the main material, which ensures that the entire structure has good corrosion resistance and a long working life. Especially when used outdoors or in harsh environments, it can effectively resist the erosion of environmental factors, reduce maintenance costs, and improve the overall reliability and durability of the system.

[0027] In summary, the main air hose anti-dropping card structure realizes a low-cost and high-efficiency anti-dropping solution through its innovative design, which not only improves the safety and stability of the system, but also takes into account the convenience and economy of maintenance. It is an effective improvement on the shortcomings of existing technologies. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the assembly structure of the main air hose connector in the background technology.

[0029] Figure 2 It is a structural schematic diagram of the anti-dropping structure of the main air hose of the utility model.

[0030] Figure 3 It is a structural schematic diagram of the fixing ring of the utility model.

[0031] Figure 4 It is a structural schematic diagram of the connecting plate of the utility model.

[0032] Figure numerals: 1. main air hose connector; 101. transition joint; 2. connecting plate; 3. fixing ring; 301. connecting ear; 4. first fastener; 401. screw; 402. nut; 403. first flat washer; 404. spring washer; 5. second fastener; 501. fixing pin; 502. second flat washer; 6. cotter pin; 7. anti-drop chain; 8. main air hose. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the utility model, the preferred implementation scheme of the utility model is described below in conjunction with specific embodiments. However, it should be understood that the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, the omission of some well-known structures and their descriptions in the drawings is understandable. The positional relationship described in the drawings is only used for illustrative purposes and cannot be understood as a limitation on this patent.

[0034] The utility model discloses an anti-dropping structure for improving the connection stability and safety of a main air hose. The structure is ingeniously designed and effectively prevents the hose from accidentally falling off during use. The structure is suitable for various occasions where an airtight connection needs to be ensured, such as the connection and maintenance of the main air duct in a rail transit vehicle braking system.

[0035] like Figure 2-Figure 4 As shown, a main air hose anti-dropping structure includes a connecting plate 2 and two fixing rings 3, the two fixing rings 3 are fixed at both ends of the connecting plate 2, and the fixing rings 3 are used to be sleeved on the transition joints 101 at both ends of the main air hose connector 1 and form a limit therewith.

[0036] The connecting plate 2 is used as a basic supporting component, and its length design needs to match the distance between the two ends of the main air hose connector 1 to provide a stable installation platform for the entire anti-detachment structure.

[0037] The fixing ring 3 is located at both ends of the connecting plate 2 and is specially designed to fit tightly on the transition joint 101 at both ends of the main air hose connector 1. In particular, the fixing ring 3 and the transition joint 101 both adopt a polygonal structure (for example, a hexagonal structure), which can prevent the relative rotation of the two after assembly, thereby enhancing the stability of the connection.

[0038] The first and second ends of the fixing ring 3 are connected by the first fastener 4 to form a connecting ear 301 extending outward, and the first fastener 4 is installed at the inner end of the connecting ear 301. The first fastener 4 includes a screw 401, a nut 402, a first flat washer 403 and a spring washer 404, and a cotter pin 6 for preventing slipping is installed on the screw 401. The first fastener 4 is used to connect the two ends of the fixing ring 3 and form a connecting ear 301 extending outward. This assembly includes a screw 401, a nut 402, a first flat washer 403 and a spring washer 404, and the screw 401 is equipped with a cotter pin 6, which further enhances the anti-loosening ability. The second fastener 5 firmly binds the fixing ring 3 to the connecting plate 2 through the outer end of the connecting ear 301. This part includes a fixing pin 501 and a second flat washer 502, and the cotter pin 6 is also used to prevent the fixing pin 501 from accidentally slipping out.

[0039] An anti-drop chain 7 is connected between the fixing ring 3 and the second fastener 5. The anti-drop chain 7 is connected between the fixing ring 3 and the fixing pin 501 as an additional safety measure to prevent the fixing pin 501 from being lost.

[0040] All components, including the connecting plate 2, the fixing ring 3, the first fastener 4, the second fastener 5 and the anti-drop chain 7, are made of stainless steel to ensure corrosion resistance and strength for long-term use and adapt to various harsh environments.

[0041] In the embodiment, a method for assembling a main air hose anti-dropping structure is as follows:

[0042] Prepare materials: Select stainless steel materials of appropriate size and specification, cut the connecting plate 2 according to the design drawing, and process it into a predetermined length to ensure that it can cover both ends of the main air hose connector 1.

[0043] Processing the fixing ring 3: Based on the size of the transition joint 101, a fixing ring 3 with a hexagonal cross-section is manufactured to ensure that it can fit closely to the surface of the transition joint 101 and has enough internal space for assembly.

[0044] Assemble the first fastener 4: preset holes at both ends of the fixing ring 3, pass the screw 401 through the inner end of the connecting ear 301, and fasten it with a nut 402, a first flat washer 403 and a spring washer 404; install the cotter pin 6 through the reserved hole at the head of the screw 401 to complete the anti-rotation and anti-loosening settings.

[0045] Connect the fixing ring 3 and the connecting plate 2: Use the second fastener 5, i.e., the fixing pin 501 and the second flat washer 502, to fix the fixing ring 3 to the outer ends of the connecting ears 301 at both ends of the connecting plate 2; similarly, install the cotter pin 6 on the fixing pin 501 to ensure the firmness of the overall structure.

[0046] Install the anti-drop chain 7: Hang the stainless steel anti-drop chain 7 between the fixing ring 3 and the second fastener 5 as an additional safety backup to maintain the integrity of the structure in case the fastener fails.

[0047] Inspection and installation: After completing the above steps, conduct a strict inspection on the entire anti-dropping structure to confirm that all components are properly fastened, move smoothly and without interference, and then install it in the appropriate position of the main air hose connector to ensure accurate docking with the transition joint 101.

[0048] Through the above-mentioned design and implementation steps, the anti-dropping structure of the main air hose of the present invention not only provides a reliable connection guarantee, but also takes into account the convenience in actual operation and the simplicity of maintenance. It is an ideal solution for improving the safety performance of the main air system.

[0049] According to the description and drawings of the utility model, those skilled in the art can easily manufacture or use the anti-dropping structure of the main air hose of the utility model, and can produce the positive effects recorded in the utility model.

[0050] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationships are based on the orientation or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in conjunction with the drawings and according to specific circumstances.

[0051] Unless otherwise specified and limited, in the present invention, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A main air hose anti-dropping structure, characterized in that: It comprises a connecting plate (2) and two fixing rings (3) fixed at two ends of the connecting plate (2); the fixing rings (3) are used to be sleeved on transition joints (101) at two ends of a main air hose connector (1) and form a limit position therewith.

2. The main air hose anti-dropping structure according to claim 1 is characterized in that: The fixing ring (3) and the transition joint (101) are both polygonal structures, and the fixing ring (3) and the transition joint (101) cannot rotate relative to each other after being assembled.

3. The main air hose anti-dropping structure according to claim 2 is characterized in that: The fixing ring (3) and the transition joint (101) are both hexagonal structures.

4. The main air hose anti-dropping structure according to claim 1 is characterized in that: The head and tail ends of the fixing ring (3) are connected by a first fastener (4) to form a connecting ear (301) extending outwards, and the first fastener (4) is installed at the inner end of the connecting ear (301).

5. The main air hose anti-dropping structure according to claim 4 is characterized in that: The first fastener (4) comprises a screw (401), a nut (402), a first flat washer (403) and a spring washer (404), and the screw (401) is provided with a cotter pin (6) for preventing it from falling off.

6. The main air hose anti-dropping structure according to claim 1 is characterized in that: The connecting plate (2) and the fixing ring (3) are connected and fixed via a second fastener (5), and the second fastener (5) is installed on the outer end of the connecting ear (301).

7. The main air hose anti-dropping structure according to claim 6 is characterized in that: The second fastener (5) comprises a fixing pin (501) and a second flat washer (502), and the fixing pin (501) is additionally provided with a split pin (6) for preventing it from falling off.

8. The main air hose anti-dropping structure according to claim 1 is characterized in that: An anti-drop chain (7) is connected between the fixing ring (3) and the second fastener (5).

9. The main air hose anti-dropping structure according to claim 1 is characterized in that: The length of the connecting plate (2) is adapted to the distance between the two ends of the main air hose connector (1).

10. The main air hose anti-dropping structure according to any one of claims 1 to 9, characterized in that: The connecting plate (2), the fixing ring (3), the first fastener (4), the second fastener (5) and the anti-drop chain (7) are all made of stainless steel.

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