Electric parking device for railway vehicle

Abstract

The utility model relates to the technical field of railway vehicle braking, and discloses an electric parking device for a railway vehicle, which comprises a supporting piece, a driving piece is arranged in the supporting piece in a sliding manner, a connector is fixed at the end part of the driving piece, one end of the connector is fixed on the driving piece, and a connecting piece is fixed at the other end of the connector; the end of the connecting piece is connected with a basic braking device, the supporting piece is further provided with an amplifying module facilitating operation and saving labor, a steering module used for changing the direction of force and a self-locking module used for locking, and the amplifying module, the steering module and the self-locking module are used for enabling the driving piece to slide and be locked and preventing a vehicle connected to the connecting piece from moving. The parking device is convenient to operate, time-saving and labor-saving, compared with a traditional mechanical holding type parking device, the parking device has the function of actively generating parking force and can not be influenced by original vehicle braking, secondary parking can be achieved after parking is relieved, meanwhile, compared with a transmission stepped parking locking structure, stepless locking is achieved through the structure, parking force loss is avoided after parking, and the parking device is safe and reliable. Parking efficiency is high, and safety and reliability are high; in addition, the parking locking force can be accurately controlled, and compared with traditional manual braking control through manual experience control, the parking locking force control device has congenital advantages and is high in safety and reliability.

Description

Technical Field

[0001] This application relates to the technical field of railway vehicle braking, and in particular to an electric parking brake for railway vehicles. Background Technology

[0002] The problem of railway vehicle runaway is a major railway safety issue. Currently, to ensure the safe parking of trains and prevent runaway, the anti-runaway measures adopted by railway freight cars both domestically and internationally are still the traditional methods of manually tightening the handbrake and placing anti-runaway wheel chocks. There are also methods that involve installing parking brakes, but the parking devices for railway freight cars on the market are mechanically retaining locking structures, which cannot actively generate parking force. Once released, they cannot be re-engaged before braking again. Furthermore, the existing structures are stepped locking mechanisms, resulting in a loss of parking force after parking.

[0003] Manual anti-slip operation has the following disadvantages: 1. The handbrake mechanism requires manual operation in each car when braking, and manual disengagement in each car when disengaging. This is inconvenient, time-consuming, and carries the risk of omission. 2. The anti-slip shoes are heavy and inconvenient to carry, resulting in long operation times, low efficiency, high labor intensity for operators, and high risk of personal safety. Furthermore, there is a possibility of omissions when disengaging, potentially causing accidents during vehicle operation. Utility Model Content

[0004] To address the problems of mechanical holding parking devices and manual anti-runaway operations mentioned above, this application provides an electric parking device for railway vehicles.

[0005] This application provides an electric parking device for railway vehicles, adopting the following technical solution: An electric parking device for railway vehicles includes a support member, a driving member slidably disposed within the support member, a connector fixed to the end of the driving member, one end of the connector fixed to the driving member, and the other end fixed to a connecting member, the end of the connecting member being connected to a basic braking device, and the support member further being provided with an amplification module for easy operation and labor saving, a steering module for changing the direction of force, and a self-locking module for locking, the amplification module, the steering module, and the self-locking module being used to make the driving member slide and lock and prevent the vehicle connected to the connecting member from moving.

[0006] By adopting the above technical solution, after the vehicle brakes to a stop, the drive source, under the combined action of the amplification module, steering module and self-locking module, causes the drive component to retract. The connecting component is connected to the basic braking device through the pulley block. After being tightened to the required value, the braking force on the wheels can be applied and maintained to realize the parking function. The electric parking brake can realize the function of the hand brake. It is convenient to operate, saves time and effort, and the locking force can be precisely controlled, making it safe and reliable.

[0007] Optionally, the amplification module, steering module, and self-locking module include a guide portion threadedly connected to the drive component, the guide portion guiding and driving the drive component, and the amplification module, steering module, and self-locking module further include a drive mechanism that rotates the guide portion and causes the drive component to move in a straight line.

[0008] By adopting the above technical solution, after the vehicle brakes to a stop, the control drive component retracts to lock the vehicle. When the vehicle brakes need to be released, the control drive component extends and the connecting component relaxes, which does not affect the release of the vehicle brakes.

[0009] Optionally, the support member is fixed with a mounting part, and the driving mechanism includes a worm wheel rotatably connected to the mounting part and a worm meshing with the worm wheel. The worm wheel has a mounting hole, and the end of the guide part is connected to a transmission part. The transmission part passes through the mounting hole, and the worm wheel is provided with a transmission key that drives the guide part to rotate synchronously. The driving mechanism also includes a driving component that rotates the worm wheel.

[0010] By adopting the above technical solution, the drive component drives the worm to rotate, the worm drives the worm wheel to rotate, and the worm wheel drives the transmission part and the guide part to rotate through the transmission key during the rotation, thereby controlling the extension and retraction of the connecting parts.

[0011] Optionally, the drive assembly includes a manual drive assembly and an electric drive assembly. The manual drive assembly includes a manual component detachably connected to the worm and driving the worm to rotate. The electric drive assembly includes a transmission gear coaxially fixed to the worm and a drive gear rotatably connected to the mounting part and meshing with the transmission gear. A power component that drives the drive gear to rotate is fixed on the mounting part.

[0012] By adopting the above technical solution, the power component drives the drive gear to rotate, the drive gear drives the transmission gear to rotate, thereby driving the corresponding worm and worm wheel to rotate, realizing the electrification control of the entire drive.

[0013] Optionally, the power component includes a rotary motor that rotates the drive gear, and the rotary motor is provided with a power input port for a mobile power source.

[0014] By adopting the above technical solution, the rotation of the drive gear can be controlled by connecting a mobile power supply carried by the carriage or by staff to the corresponding wiring port.

[0015] Optionally, a bearing is fixed inside the support member, and the drive member passes through the bearing.

[0016] By adopting the above technical solution, the bearing is used to limit and position the movement of the guide part, making the overall structure more stable and the movement of the guide part smoother.

[0017] Optionally, auxiliary bearings and auxiliary bearing seats for axial positioning of the worm gear are fixed on both sides of the axial direction.

[0018] By adopting the above technical solution, the auxiliary bearing and auxiliary bearing housing ensure that only torque is transmitted between the worm gear and the guide, and not axial force, thus guaranteeing the stability of the structure.

[0019] Optionally, the mounting section is provided with a cable connector that connects to the power source and facilitates external connection, through which the corresponding controller and display are connected.

[0020] By adopting the above technical solution, the controller and display are set up to facilitate data observation and control throughout the process.

[0021] In summary, this application includes at least one of the following beneficial technical effects: Before the advent of electric parking brakes, the main problems were difficulties in managing parking shoes, high manual braking intensity, and inaccurate operation. Existing mechanically held electric parking brakes could not actively generate parking force and had to rely on the application of existing braking force to maintain parking. Once parking was released, re-parking was impossible without applying brakes. Furthermore, traditional holding electric parking brakes have an organic locking structure, resulting in a loss of braking force after parking. With this electric parking brake, when the vehicle stops, the drive component retracts, and the connecting component connects to the base braking device via a pulley system. Once tightened to the required value, braking of the wheels is maintained, achieving the parking function. When the vehicle brake needs to be released, the drive component extends, and the connecting component loosens without affecting the release of the brakes. This application is easy to operate, saving time and effort. Compared with the traditional mechanical holding electric parking device, it has the function of actively generating parking force, which is not affected by the original vehicle brake. It can achieve secondary parking after the parking is released. At the same time, compared with the stepped transmission parking locking structure, this structure is a stepless locking structure, with no loss of parking force after parking, resulting in high parking efficiency and high safety and reliability. In addition, the parking locking force can be precisely controlled, which has an inherent advantage over the traditional manual experience-based handbrake control, and has high safety and reliability. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0023] Figure 2 This is a structural diagram used to illustrate the amplification module, steering module, and self-locking module.

[0024] Figure 3 This is a cross-sectional view of an embodiment of this application.

[0025] Reference numerals: 1. Support component; 2. Drive component; 3. Bearing; 4. Connector; 5. Connector; 6. Guide part; 7. Mounting part; 8. Worm gear; 9. Worm; 10. Mounting hole; 11. Keyway; 12. Transmission key; 13. Drive groove; 14. Manual component; 15. Transmission gear; 16. Drive gear; 23. Auxiliary bearing; 24. Auxiliary bearing housing; 25. Cable connector; 26. Transmission part. Detailed Implementation

[0026] The embodiments of this application are described in detail below, and examples of the embodiments are shown in the accompanying drawings.

[0027] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] This application discloses an electric parking device for railway vehicles, referring to... Figure 1 The system includes a hollow support member 1, within which a drive member 2 is slidably mounted. The drive member 2 is preferably a hollow trapezoidal nut. The inner wall of the support member 1 has a parallel surface that abuts against the plane of the drive member 2, ensuring that the drive member 2 does not rotate relative to the support member 1. A bearing 3 is fixed inside the support member 1, and the drive member 2 passes through the bearing 3, ensuring the smooth movement of the drive member 2. The support member 1 is preferably a cylindrical support cylinder, allowing the drive rod to slide axially along the support cylinder.

[0029] Reference Figure 1 and Figure 2 One end of the drive component 2 is located inside the support component 1, and the other end of the drive component 2 is fixed with a connector 4, preferably a fork-shaped push rod. One end of the connector 4 is fixed to the drive component 2, and the other end of the connector 4 is fixed with a connector 5, preferably a chain. The end of the connector 5 is connected to the basic braking device. After the vehicle stops, the drive component 2 is retracted, and the connector 5 is connected to the head of the basic braking device through a pulley system. After being tightened to the required value, the tread brake on the wheels can be applied and maintained to achieve the parking function. When the vehicle brake needs to be released, the drive component 2 is extended, and the connector 5 is released without affecting the release of the vehicle brake. The electric parking brake can realize the function of a handbrake, which is convenient to operate, saves time and effort, and the locking force can be precisely controlled, making it safe and reliable.

[0030] Reference Figure 2 and Figure 3 The support member 1 is also provided with an amplification module, a steering module and a self-locking module that allow the drive member 2 to slide along the axial direction of the support member 1. The amplification module is used to achieve the purpose of driving with less effort, the steering module is used to change the direction of force for easy operation, and the self-locking module is used to achieve locking. The amplification module, steering module and self-locking module include a guide part 6 that passes through the drive member 2 and is threadedly connected to the drive member 2. The amplification module, steering module and self-locking module also include a drive mechanism that rotates the guide part 6. During the rotation, the guide part 6 drives the drive member 2 to move in a straight line. The end of the support member 1 facing away from the connector 5 is fixed with a mounting part 7 by bolts. The mounting part 7 is preferably a mounting plate or a mounting box. The drive mechanism includes a worm gear 8 rotatably connected to the mounting part 7 and a worm 9 meshing with the worm gear 8. The worm gear 8 has a mounting hole 10 that passes through the worm gear 8. The guide part 6 is integrally formed with a transmission part 26. The transmission part is preferably a transmission rod. The transmission part 26 passes through the mounting hole 10. The worm gear 8 and the transmission part 26 have interconnected keyways 11. A transmission key 12 that causes the worm gear 8 to drive the guide part 6 to rotate is installed in the keyway 11.

[0031] Reference Figure 2 and Figure 3 The drive mechanism also includes a drive assembly for rotating the worm gear 8. The drive assembly includes a manual drive assembly and an electric drive assembly. A polygonal drive groove 13 is coaxially formed at the end of the worm 9. The manual drive assembly includes a manual component 14, preferably a wrench, whose end is inserted into and detachably connected to the drive groove 13. The manual component 14 acts on the worm 9, causing the worm 9 to drive the worm gear 8 to rotate. The electric drive assembly includes a transmission gear 15 coaxially fixed to the worm 9 and a drive gear 16 rotatably connected to the mounting part 7 and meshing with the transmission gear 15. A power component is fixed to the mounting part 7, including a fixedly mounted rotary motor. The output shaft of the rotary motor is coaxially fixed to the shaft of the drive gear 16. The rotary motor has a power port for a portable power supply. By connecting a portable power supply carried by the vehicle or by the operator to the corresponding power port, the rotation of the drive gear 16 can be controlled. Operators can select the appropriate drive assembly for their work based on the actual situation.

[0032] Reference Figure 2 and Figure 3 Auxiliary bearings 23 and auxiliary bearing seats 24 are fixed on both sides of the worm gear 8 to position the worm gear 8 axially. The arrangement of auxiliary bearings 23 and auxiliary bearing seats 24 ensures that only torque is transmitted between the worm gear 8 and the guide part 6, and not axial force, thus ensuring that the force of the pressure sensor 18 is consistent with the force of the guide part 6.

[0033] Reference Figure 1 and Figure 2The installation unit 7 is equipped with a cable connector 25 that connects to the power source and facilitates external connection. The corresponding controller and display are connected through the cable connector 25. In actual operation, the battery, controller, display and other components can be combined into a control box, which can be carried and operated according to the corresponding steps. It has functions such as displaying the parking force and parking status, and the release status. At the same time, it is equipped with functions such as anti-omission alarm to prevent errors and make the operation traceable.

[0034] The implementation principle of this application embodiment is as follows: After the vehicle stops, the drive component 2 is retracted by controlling it, and the connecting component 5 is connected to the basic braking device through the pulley group. After being tightened to the required value, the braking of the wheels can be maintained, realizing the parking function; when the vehicle braking needs to be released, the drive component 2 is extended by controlling it, and the connecting component 5 is relaxed, so as not to affect the release of the vehicle. This application is convenient to operate, saves time and effort. Compared with the traditional mechanical holding electric parking device, it has the function of actively generating parking force, which is not affected by the original vehicle braking. After the parking is released, it can realize secondary parking. At the same time, compared with the stepped transmission parking locking structure, this structure is a stepless locking structure, with no loss of parking force after parking, high parking efficiency, and high safety and reliability; in addition, the parking locking force can be precisely controlled, which has an inherent advantage over the traditional manual experience-controlled handbrake control, and has high safety and reliability.

[0035] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An electric parking brake for a railway vehicle, characterized by: The utility model provides a kind of brake device, including support (1), driving member (2) is arranged in the support (1) slidingly, connecting head (4) is fixed to the end of driving member (2), one end of connecting head (4) is fixed on driving member (2), connecting member (5) is fixed to the other end, the end of connecting member (5) is connected with base brake device, amplification module for facilitating operation and labor saving, steering module for changing the direction of force and self-locking module for locking are further provided on the support (1), and amplification module, steering module and self-locking module are used to make driving member (2) slide and lock and prevent the movement of vehicle connected to connecting member (5).

2. An electric parking brake for a railway vehicle as defined in claim 1, characterized in that: The amplification module, steering module and self-locking module include a guide portion (6) threadedly connected to the driving member (2), the guide portion (6) guiding and driving the driving member (2), and the amplification module, steering module and self-locking module further include a driving mechanism for rotating the guide portion (6) and linearly moving the driving member (2).

3. An electric parking brake for a railway vehicle as defined in claim 2, characterized in that: The support (1) is fixed with a mounting portion (7), and the driving mechanism includes a worm wheel (8) rotatably connected to the mounting portion (7) and a worm (9) engaged with the worm wheel (8), the worm wheel (8) is provided with a mounting hole (10), the end of the guide portion (6) is connected with a transmission portion (26), the transmission portion (26) is arranged in the mounting hole (10), the worm wheel (8) is provided with a transmission key (12) for synchronously rotating the transmission portion (26), and the driving mechanism further includes a driving assembly for rotating the worm wheel (8).

4. An electric parking brake for a railway vehicle as defined in claim 3, characterized in that: The driving assembly includes a manual driving assembly and an electric driving assembly, the manual driving assembly includes a manual member (14) detachably connected to the worm (9) and rotating the worm (9), the electric driving assembly includes a transmission gear (15) coaxially fixed to the worm (9), a driving gear (16) rotatably connected to the mounting portion (7) and engaged with the transmission gear (15), and the mounting portion (7) is fixed with a power member for rotating the driving gear (16).

5. An electric parking brake for a railway vehicle as defined in claim 4, characterized in that: The power member includes a rotating motor for rotating the driving gear (16), and the rotating motor is provided with an electricity inlet for a mobile power supply.

6. An electric parking brake for a railway vehicle as defined in claim 5, characterized in that: The support (1) is fixed with a bearing (3), and the driving member (2) is arranged in the bearing (3).

7. An electric parking brake for a railway vehicle as defined in claim 6, characterized in that: The worm wheel (8) is fixed with an auxiliary bearing (23) and an auxiliary bearing seat (24) on both axial sides of the worm wheel (8) for axially positioning the worm wheel (8).

8. An electric parking brake for a railway vehicle as defined in claim 7, characterized in that: The mounting portion (7) is provided with a cable joint (25) connected to a power source and facilitating connection with an external device, and a corresponding controller and a display are connected through the cable joint (25).

Images