High-speed motor train unit hinge

Abstract

The utility model discloses a high-speed motor train unit hinge, which relates to the technical field of hinge accessories and comprises a mounting shaft, a first blade and a second blade, the first blade and the second blade are rotatably connected onto the mounting shaft, and the mounting shaft is provided with an upper limit portion for limiting the first blade and the second blade and a lower limit portion for limiting the first blade and the second blade. An oil containing cavity is formed in the upper limiting part, an oil outlet hole communicated with the oil containing cavity is formed in the bottom face of the upper limiting part, an oil distributing cavity communicated with the oil outlet hole is formed in the top face of the mounting shaft, an oil distributing channel extending in the radial direction of the mounting shaft is formed in the upper end of the mounting shaft, and the oil distributing channel is communicated with the oil distributing cavity. According to the built internal lubricating system, the volatilization loss of lubricating oil is reduced, and the lubricating period is remarkably prolonged, so that the frequency of checking and adding the lubricating oil by maintenance personnel is greatly reduced, the maintenance burden is fundamentally reduced, the consumption of manpower and material resources is reduced, and the train operation cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of hinge accessories technology, specifically a high-speed train hinge. Background Technology

[0002] During the operation of high-speed trains, the hinge, as a key articulated component, plays a crucial role in the normal operation of the train. It not only needs to withstand the mechanical stress caused by frequent opening and closing movements, but also needs to maintain a stable working state in complex operating environments. Currently, high-speed train hinges typically adopt a rotating shaft connection structure to achieve their flexible rotation function.

[0003] However, existing high-speed train hinges have revealed numerous problems in actual use. Generally, lubricating oil is applied to the outside of the shaft to reduce friction between the hinge and the shaft. However, with the long-term, high-intensity operation of high-speed trains, the lubricating oil gradually evaporates or runs out. Once the lubricating oil is insufficient, the wear between the hinge and the shaft will increase dramatically. This excessive wear not only damages the structural integrity of the hinge itself and reduces its service life, but also generates noise, affecting the smoothness of train operation and passenger comfort.

[0004] To maintain the proper functioning of the folding mechanism and ensure the safe and efficient operation of high-speed trains, staff need to regularly inspect the folding mechanism and add lubricating oil as needed. However, this process undoubtedly increases the burden of folding mechanism maintenance, consuming significant manpower and material resources, affecting the normal operational efficiency of the train, and increasing operating costs. Moreover, in actual maintenance, due to the long operating lines and frequent train services of high-speed trains, the time available for maintenance personnel is often very limited, further increasing the difficulty of maintenance work.

[0005] In view of the above, this application is hereby submitted. Utility Model Content

[0006] The purpose of this invention is to provide a high-speed train folding mechanism to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, this utility model provides a high-speed train folding liner, comprising a mounting shaft and a first blade and a second blade rotatably connected thereto. The mounting shaft is provided with an upper limit portion and a lower limit portion for limiting the first and second blades. An oil-containing cavity is formed inside the upper limit portion, and an oil outlet hole communicating with the oil-containing cavity is formed on the bottom surface of the upper limit portion. An oil distribution cavity communicating with the oil outlet hole is formed on the top surface of the mounting shaft. An oil distribution channel extending radially is provided at the upper end of the shaft, which communicates with the oil distribution chamber. A bimetallic strip is also installed on the bottom surface of the upper limit part. A sealing plug inserted into the oil outlet hole is installed on the bimetallic strip. The outer wall of the sealing plug fits against the inner wall of the oil outlet hole. An oil supply channel communicating with the oil distribution chamber is provided on the sealing plug. In the initial state of the bimetallic strip, the sealing plug blocks the oil outlet hole. After the bimetallic strip is heated and deformed, it pushes the sealing plug to move into the oil receiving chamber, so that the oil supply channel communicates with the oil receiving chamber.

[0008] Furthermore, multiple oil distribution channels are provided, and the multiple oil distribution channels are equidistantly distributed along the circumference of the mounting shaft. The outer wall of the mounting shaft is also provided with flow channels corresponding to the multiple oil distribution channels one by one.

[0009] Furthermore, the flow channel extends axially along the mounting shaft, and the depth of the flow channel is 1-2 mm.

[0010] Furthermore, an oil injection hole is provided on the side wall of the upper limit part, which is arranged radially thereon. The oil injection hole is connected to the oil receiving cavity, and a sealing bolt for sealing and plugging is provided inside the oil injection hole.

[0011] Furthermore, the outer wall of the sealing bolt is provided with an external thread, and the inner wall of the oil injection hole is provided with an internal thread that matches it.

[0012] Furthermore, a heat-conducting wire is provided inside the mounting shaft, the heat-conducting wire extends axially along the mounting shaft, and the top end of the heat-conducting wire is connected to a bimetallic strip.

[0013] Furthermore, multiple heat-conducting wires are provided, and the multiple heat-conducting wires are distributed at intervals inside the mounting shaft.

[0014] Furthermore, the upper limit portion is integrally formed on the top end of the mounting shaft, and the lower limit portion is threadedly connected to the lower part of the mounting shaft.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. In this utility model, when the high-speed train is running and the temperature at the folding section rises, the heat is transferred to the heat-conducting wire through the mounting shaft, and then to the bimetallic strip. Since the bimetallic strip is composed of two metals with different coefficients of thermal expansion, it bends and deforms after being heated, pushing the sealing plug to move into the oil cavity. The lubricating oil flows out from the oil cavity, thus achieving lubrication at the connection between the mounting shaft and the blade. This design constructs an intelligent temperature-controlled lubrication mechanism to ensure that the folding section can still be fully lubricated under high-temperature conditions, effectively reducing the wear of the folding section under high-temperature conditions and improving the adaptability and reliability of the folding section under complex temperature conditions.

[0017] 2. In this utility model, multiple oil channels are equidistantly distributed along the circumference of the mounting shaft, which can evenly disperse the lubricating oil flowing out of the oil distribution chamber to all directions of the mounting shaft. The flow channels on the outer wall of the mounting shaft, which correspond one-to-one with the oil channels, guide the lubricating oil to flow along the axial direction of the mounting shaft, expand the lubrication coverage area, and ensure that all parts of the mounting shaft and the blade in contact receive sufficient lubrication. This avoids excessive local wear caused by uneven lubrication, comprehensively improves the wear resistance of the hinge, extends the service life of the hinge, and provides a strong guarantee for the stable operation of the hinge of the high-speed train under long-term and high-intensity operation. Attached Figure Description

[0018] Figure 1 This is a front view structural diagram of the present utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the mounting shaft in this utility model;

[0020] Figure 3 This is a front view schematic diagram of the mounting shaft in this utility model;

[0021] Figure 4 For along Figure 3 A schematic diagram of the cross-sectional structure along the center section AA;

[0022] Figure 5 for Figure 4 Enlarged view of the structure at point A in the middle.

[0023] In the diagram: 1. Mounting shaft; 2. First blade; 3. Second blade; 4. Upper limit position; 5. Lower limit position; 6. Flow channel; 7. Heat-conducting wire; 8. Oil chamber; 9. Sealing bolt; 10. Oil distribution chamber; 11. Oil distribution channel; 12. Bimetallic strip; 13. Sealing plug; 14. Oil supply channel. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-5 This utility model provides a technical solution: a high-speed train folding mechanism, including a mounting shaft 1 and a first blade 2 and a second blade 3 rotatably connected thereto. The mounting shaft 1 is provided with an upper limit part 4 and a lower limit part 5 for limiting the first blade 2 and the second blade 3. An oil receiving cavity 8 is opened inside the upper limit part 4, and an oil outlet hole communicating with the oil receiving cavity 8 is opened on the bottom surface of the upper limit part 4. An oil distribution cavity 10 communicating with the oil outlet hole is opened on the top surface of the mounting shaft 1, and a radially extending distribution cavity is opened at the upper end of the mounting shaft 1. Oil passage 11, oil distribution passage 11 is connected to oil distribution chamber 10, and a bimetallic strip 12 is installed on the bottom surface of the upper limit part 4. A sealing plug 13 is installed on the bimetallic strip 12 and inserted into the oil outlet hole. The outer wall of the sealing plug 13 is in contact with the inner wall of the oil outlet hole. An oil supply channel 14 connected to the oil distribution chamber 10 is opened on the sealing plug 13. In the initial state of the bimetallic strip 12, the sealing plug 13 blocks the oil outlet hole. After the bimetallic strip 12 is heated and deformed, it pushes the sealing plug 13 to move into the oil receiving chamber 8 so that the oil supply channel 14 is connected to the oil receiving chamber 8.

[0026] Specifically, the mounting shaft 1 carries the first blade 2 and the second blade 3, enabling the flap rotation. The upper limit part 4 and the lower limit part 5 restrict the blade rotation range. Under normal conditions, the bimetallic strip 12 is in its initial state, and the sealing plug 13 tightly seals the oil outlet, preventing the lubricating oil in the oil cavity 8 from flowing out. When the high-speed train operates, causing the temperature at the flap to rise, the heat is transferred through the mounting shaft 1 to the heat-conducting wire 7, and then to the bimetallic strip 12. Since the bimetallic strip 12 is composed of two metals with different coefficients of thermal expansion, it bends and deforms after being heated, pushing the sealing plug 13 into the oil cavity 8. At this time, the oil supply channel 14 on the sealing plug 13 connects to the oil cavity 8, and the lubricating oil flows from the oil cavity 8 sequentially through the oil outlet, the oil supply channel 14, the oil distribution cavity 10, and the oil distribution channel 11, achieving lubrication at the connection between the mounting shaft 1 and the blade. This design constructs an intelligent temperature-controlled lubrication mechanism. Under normal temperature conditions, it prevents unexplained leakage and evaporation of lubricating oil, reducing lubricating oil consumption. When the temperature rises, lubrication is automatically activated to ensure that the hinges are adequately lubricated even under high-temperature conditions. This effectively reduces wear on the hinges in high-temperature environments, improves the adaptability and reliability of the hinges under complex temperature conditions, ensures stable operation of the hinges in high-speed trains, and extends the service life of the hinges.

[0027] See Figure 5Multiple oil distribution channels 11 are provided, and the multiple oil distribution channels 11 are distributed at equal intervals along the circumference of the mounting shaft 1. The outer wall of the mounting shaft 1 is also provided with flow channels 6 corresponding to the multiple oil distribution channels 11.

[0028] Specifically, multiple oil distribution channels 11 are equidistantly distributed along the circumference of the mounting shaft 1, which can evenly distribute the lubricating oil flowing from the oil distribution chamber 10 to all directions of the mounting shaft 1. The flow channels 6 on the outer wall of the mounting shaft 1, which correspond one-to-one with the oil distribution channels 11, guide the lubricating oil to flow along the axial direction of the mounting shaft 1, expand the lubrication coverage area, and ensure that all parts of the mounting shaft 1 in contact with the blades are adequately lubricated. This avoids excessive local wear caused by uneven lubrication, comprehensively improves the wear resistance of the folding, extends the service life of the folding, and provides a strong guarantee for the stable operation of the high-speed train folding under long-term and high-intensity operation.

[0029] See Figure 1 The flow channel 6 extends axially along the mounting shaft 1, and the depth of the flow channel 6 is 1-2mm.

[0030] Specifically, the flow channel 6 extends axially along the mounting shaft 1, and its depth of 1-2 mm ensures smooth flow of lubricating oil within the flow channel 6 without weakening the structural strength of the mounting shaft 1 due to excessive depth. During the hinge rotation process, the lubricating oil continuously lubricates the contact area between the mounting shaft 1 and the blade within the flow channel 6. The optimized design of the flow channel 6 with its reasonable depth improves the lubricating oil delivery path, maintaining the structural stability of the mounting shaft 1 while ensuring lubrication effectiveness. This enhances the reliability of the hinge during high-speed train operation, reduces hinge failures caused by structural damage, and lowers operational risks.

[0031] See Figure 5 An oil injection hole is provided on the side wall of the upper limit part 4, which is arranged radially therein. The oil injection hole is connected to the oil receiving cavity 8, and a sealing bolt 9 is provided inside the oil injection hole for sealing and plugging it.

[0032] Specifically, the oil filling hole on the side wall of the upper limit part 4 is used to replenish lubricating oil into the oil chamber 8. The sealing bolt 9 normally seals the oil filling hole to prevent lubricating oil leakage and the entry of external impurities into the oil chamber 8. During maintenance, lubricating oil can be injected by unscrewing the sealing bolt 9. This sealable oil filling design allows maintenance personnel to conveniently replenish lubricating oil when needed, while effectively preventing lubricating oil leakage and impurity intrusion during daily operation. This ensures the clean and stable operation of the internal lubrication system, extends the service life of the lubricating oil, reduces maintenance frequency, and lowers maintenance costs.

[0033] The outer wall of the sealing bolt 9 is provided with external threads, and the inner wall of the oil injection hole is provided with internal threads that are compatible with it.

[0034] Specifically, the external thread on the outer wall of the sealing bolt 9 and the internal thread on the inner wall of the oil filling hole cooperate with each other to achieve a tight connection and good seal. When maintenance personnel tighten the sealing bolt 9, the threaded rotation causes it to be screwed into or out of the oil filling hole. The threaded connection sealing method is simple to operate and highly reliable, making it convenient for maintenance personnel to replenish lubricating oil. The good sealing performance ensures the normal operation of the internal lubrication system, prevents lubricating oil leakage or impurities from entering due to poor sealing, and improves the stability and reliability of the hinge lubrication system.

[0035] See Figure 4 and Figure 5 A heat-conducting wire 7 is provided inside the mounting shaft 1. The heat-conducting wire 7 extends axially along the mounting shaft 1, and the top end of the heat-conducting wire 7 is connected to the bimetallic strip 12.

[0036] Specifically, the heat-conducting wire 7 extending axially inside the mounting shaft 1 can quickly sense temperature changes at different parts of the mounting shaft 1 and rapidly transfer heat to the bimetallic strip 12, providing a basis for the bimetallic strip 12 to respond according to temperature changes. The efficient thermal conductivity of the heat-conducting wire 7 ensures that the bimetallic strip 12 can sense temperature changes in a timely manner, thereby accurately triggering the adjustment of the lubrication system, realizing a rapid response to different temperature conditions, ensuring that the folding can obtain appropriate lubrication in various temperature environments, and improving the adaptability of the folding in complex environments.

[0037] See Figure 4 and Figure 5 Multiple heat-conducting wires 7 are provided, and the multiple heat-conducting wires 7 are distributed at intervals inside the mounting shaft 1.

[0038] Specifically, multiple heat-conducting wires 7 spaced apart inside the mounting shaft 1 can more comprehensively and quickly sense temperature changes in different areas of the mounting shaft 1. Compared to a single heat-conducting wire 7, it can more accurately reflect the overall temperature status of the mounting shaft 1 and transfer heat to the bimetallic strip 12, improving the comprehensiveness and accuracy of temperature sensing. This allows the bimetallic strip 12 to adjust the lubrication system more promptly and accurately according to temperature changes, ensuring that the hinge always receives proper lubrication under complex temperature conditions, further enhancing the service life and operational stability of the hinge.

[0039] See Figure 2 The upper limit part 4 is integrally formed on the top of the mounting shaft 1, and the lower limit part 5 is threadedly connected to the lower part of the mounting shaft 1.

[0040] Specifically, the upper limit part 4 is integrally formed at the top of the mounting shaft 1, enhancing the firmness and integrity of the connection between the two, reducing connection gaps, and preventing impurities from entering. The lower limit part 5 is threadedly connected to the lower part of the mounting shaft 1, facilitating installation and disassembly. The position of the lower limit part 5 can be adjusted according to actual needs, precisely controlling the rotation range of the first blade 2 and the second blade 3. The integrally formed upper limit part 4 improves structural strength and stability, reducing the risk of failure due to loose connections. The threaded lower limit part 5 increases the convenience of installation and maintenance. Maintenance personnel can flexibly adjust the limit position according to the actual use of the folding mechanism, ensuring the folding mechanism operates in optimal condition and improving its versatility and maintainability.

[0041] Working principle: The folding mechanism of this high-speed train uses the mounting shaft 1 as the core load-bearing structure, which rotatably connects the first blade 2 and the second blade 3 to realize the opening and closing action of the folding mechanism. The upper limit part 4 and the lower limit part 5 are respectively set at the top and bottom of the mounting shaft 1, precisely limiting the rotation range of the blades and ensuring that the folding mechanism operates within a safe and specified angle range.

[0042] In terms of lubrication, the oil cavity 8 inside the upper limit part 4 serves as a storage place for lubricating oil. Under normal conditions, the bimetallic strip 12 is in its initial position, and the sealing plug 13 tightly seals the oil outlet to prevent lubricating oil leakage. When the high-speed train runs and the temperature of the folding part rises, the heat-conducting wire 7 inside the mounting shaft 1 quickly senses the temperature change and transfers the heat to the bimetallic strip 12. Because the bimetallic strip 12 is made of two metals with different coefficients of thermal expansion, it bends and deforms when heated, pushing the sealing plug 13 to move into the oil cavity 8, so that the oil supply channel 14 on the sealing plug 13 is connected to the oil cavity 8. At this time, the lubricating oil passes through the oil outlet, the oil supply channel 14, the oil distribution cavity 10 in sequence, and then through the oil distribution channels 11 that are equidistantly distributed along the circumference of the mounting shaft 1. Finally, it flows along the corresponding flow channel 6 on the outer wall of the mounting shaft 1 to achieve all-round lubrication of the connection between the mounting shaft 1 and the blade. When the temperature drops, the bimetallic strip 12 returns to its original state, the sealing plug 13 re-seals the oil outlet, and the lubricating oil supply stops. In addition, the oil injection hole and sealing bolt 9 on the side wall of the upper limit part 4 form an oil injection sealing system, which facilitates the replenishment of lubricating oil during maintenance.

[0043] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes in form and detail may be made to the present invention without departing from the spirit and scope of the appended claims.

Claims

1. A high-speed train folding mechanism, comprising a mounting shaft (1) and a first blade (2) and a second blade (3) rotatably connected thereto, characterized in that: The mounting shaft (1) is provided with an upper limit stop (4) for limiting the first blade (2) and the second blade (3) and a lower limit stop (5). The upper limit stop (4) has an oil receiving cavity (8) inside. The bottom surface of the upper limit stop (4) has an oil outlet hole communicating with the oil receiving cavity (8). The top surface of the mounting shaft (1) has an oil distribution cavity (10) communicating with the oil outlet hole. The upper end of the mounting shaft (1) has an oil distribution channel (11) extending radially therefrom. The oil distribution channel (11) communicates with the oil distribution cavity (10). The upper limit stop (4) has an oil distribution channel (11) extending radially therefrom. The oil distribution channel (11) communicates with the oil distribution cavity (10). A bimetallic strip (12) is also installed on the bottom surface of part (4). A sealing plug (13) is installed on the bimetallic strip (12) and inserted into the oil outlet hole. The outer wall of the sealing plug (13) is in contact with the inner wall of the oil outlet hole. An oil supply channel (14) communicating with the oil distribution chamber (10) is opened on the sealing plug (13). In the initial state of the bimetallic strip (12), the sealing plug (13) blocks the oil outlet hole. After the bimetallic strip (12) is heated and deformed, it pushes the sealing plug (13) to move into the oil receiving chamber (8) so that the oil supply channel (14) communicates with the oil receiving chamber (8).

2. The folding mechanism of a high-speed train as described in claim 1, characterized in that: The oil distribution channel (11) is provided in multiple ways. The multiple oil distribution channels (11) are distributed equidistantly along the circumference of the mounting shaft (1). The outer wall of the mounting shaft (1) is also provided with flow channels (6) corresponding to the multiple oil distribution channels (11).

3. The folding mechanism of a high-speed train as described in claim 2, characterized in that: The flow channel (6) extends axially along the mounting shaft (1), and the depth of the flow channel (6) is 1-2 mm.

4. The folding mechanism of a high-speed train as described in claim 1, characterized in that: The upper limit part (4) has an oil injection hole arranged radially on its side wall. The oil injection hole is connected to the oil receiving cavity (8). The inside of the oil injection hole is provided with a sealing bolt (9) for sealing and plugging it.

5. A high-speed train folding liner as described in claim 4, characterized in that: The outer wall of the sealing bolt (9) is provided with an external thread, and the inner wall of the oil injection hole is provided with an internal thread that matches it.

6. The folding mechanism of a high-speed train as described in claim 1, characterized in that: A heat-conducting wire (7) is provided inside the mounting shaft (1). The heat-conducting wire (7) extends axially along the mounting shaft (1), and the top end of the heat-conducting wire (7) is connected to the bimetallic strip (12).

7. A high-speed train folding liner as described in claim 6, characterized in that: Multiple heat-conducting wires (7) are provided, and the multiple heat-conducting wires (7) are distributed at intervals inside the mounting shaft (1).

8. A high-speed train folding liner as described in claim 1, characterized in that: The upper limit part (4) is integrally formed on the top of the mounting shaft (1), and the lower limit part (5) is threaded to the lower part of the mounting shaft (1).

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