Power generation device for collecting vibration energy of bogie

Abstract

The utility model discloses a power generation device capable of collecting vibration energy of a bogie. The power generation device is used for transmitting vibration between a swing bolster of the bogie of a railway wagon and the bogie. Receiving the transmitted bidirectional vibration motion, and converting the motion into continuous rotation motion in the same direction; abnormal impact vibration which accidentally occurs and is far larger than normal conditions can be directly consumed, and damage and influence on whole power generation equipment are avoided. The speed increasing mechanism is used for increasing the speed of rotary motion so as to adapt to the working characteristics of the generator and improve the energy collection efficiency; electricity is generated through rotation motion, and collected vibration energy is finally converted into electric energy; the collected vibration energy comes from vibration between a swing bolster and a side frame of a bogie in the running process of a railway wagon, and the vibration energy is originally absorbed by a vibration reduction part of the bogie of the wagon, so that the loss of traction force of the locomotive is not caused, the vibration reduction load of a vibration reduction structure can be reduced, and other equipment and parts of the wagon are not influenced.

Description

Technical Field

[0001] The present application belongs to the technical field of power supply for railway freight cars, and in particular, relates to a power generation device for collecting vibration energy of a bogie. Background Art

[0002] Railway freight cars have not yet been equipped with effective power supply devices due to the particularity of their application conditions, which has resulted in many mature control technologies, such as ECP braking systems, electronic anti-skid devices, axle temperature detection equipment, etc., being unable to be used on railway freight cars;

[0003] There are two ways to power railway freight cars: centralized power supply and independent power supply for each car;

[0004] Since the re-marshaling of railway freight cars is very frequent and the marshaling of cars is very random, the use of centralized power supply will generate a huge workload of cable disconnection during freight car operations;

[0005] Currently, the independent power supply methods for a single vehicle include shaft drive power generation and wind power generation, but both will increase the traction loss of the locomotive, and shaft drive power generation will also destroy the dynamic balance of the railway freight car axle system. Utility Model Content

[0006] One of the purposes of the present application is to provide a method for generating electricity by collecting vibration energy of a bogie, wherein the collected vibration energy is derived from the vibration between the bolster and the side frame of the bogie during the operation of a railway freight car. Such vibration energy is originally intended to be absorbed by the vibration-damping components of the vehicle bogie, so it not only does not cause loss of locomotive traction, but also can reduce the vibration-damping load of the vibration-damping structure, and has no effect on other equipment and components of the vehicle.

[0007] In order to solve the technical problem that the centralized power supply method for railway freight cars in the prior art generates a huge amount of cable disconnection work, the present application provides a power generation method for collecting bogie vibration energy, which comprises:

[0008] a vibration transmission step of transmitting the vibration between the bolster and the bogie of the railway freight car bogie;

[0009] The motion conversion step can receive the transmitted bidirectional vibration motion and convert such motion into continuous rotational motion in the same direction, thereby improving the energy collection efficiency;

[0010] The energy-limiting treatment step of the power generation part can directly consume the abnormal impact and vibration energy that is much greater than the normal situation, thus avoiding damage and impact on the overall power generation equipment;

[0011] The speed-increasing step uses a compact speed-increasing mechanism to increase the speed of the rotational motion so as to adapt to the working characteristics of the generator and improve the energy collection efficiency;

[0012] The power generation step uses the accelerated rotational motion to generate electricity, and the collected vibration energy is ultimately converted into electrical energy.

[0013] A second object of the present application is to provide a power generation device for collecting vibration energy of a bogie, which comprises a bolster, a side frame, a rack and a device housing, wherein the bolster vibrates relative to the side frame;

[0014] The rack is mounted on the bolster;

[0015] The device housing is installed on the side frame, and the device housing is installed with a gear shaft and a generator. The outer end of the gear shaft is connected to a gear, and the inner end is connected to a two-way conversion unit; the gear and the rack are meshed with each other; the two-way conversion unit is connected to the generator; wherein the two-way conversion unit includes a one-way bearing 1 and a one-way bearing 2, the one-way bearing 1 and the one-way bearing 2 are sleeved in the inner section of the gear shaft at an interval, and the one-way bearing 1 and the one-way bearing 2 are installed in reverse, the one-way bearing 1 is sleeved on the outer periphery of the one-way bearing 1, the one-way bearing 2 is sleeved on the outer periphery of the one-way bearing 2, and also includes a bevel gear 3, the bevel gear 1 and the bevel gear 3 are meshed with each other, the bevel gear 2 and the bevel gear 3 are meshed with each other, the bevel gear 3 is sleeved on the upper end of the transmission shaft, and the lower end of the transmission shaft is connected to the generator.

[0016] Furthermore, the present application provides a power generation device for collecting bogie vibration energy, which also includes a torque limiter, which is installed between the transmission shaft and the generator input shaft; the bevel gear three is connected to the torque limiter through a coupling structure, and when an impact vibration far greater than normal occurs at the front end, the torque limiter structure can consume excess vibration impact energy to avoid damage to the entire power generation equipment and keep the torque of the rear end power generation equipment within an appropriate range.

[0017] Furthermore, the present application provides a power generation device for collecting bogie vibration energy, which also includes a planetary gearbox, which is installed between the torque limiter and the generator input shaft; the torque limiter transmits the rotational motion to the planetary gearbox through a coupling structure, and uses a compact planetary gear structure to increase the speed of the rotational motion, so that the output rotational speed is within a section with higher generator utilization efficiency, thereby improving the energy collection efficiency.

[0018] Compared with the prior art, the present application has the following advantages: the vibration energy collected in the present application comes from the vibration between the bolster and the side frame of the bogie during the operation of the railway freight car. This type of vibration energy is originally intended to be absorbed by the vibration reduction components of the vehicle bogie, so it will not only not cause the loss of locomotive traction, but also reduce the vibration reduction load of the vibration reduction structure, and has no effect on other original equipment and components of the vehicle;

[0019] The utility model can be flexibly applied to each independent railway freight car, belonging to a single-car independent power supply mode, and will not generate a huge workload of cable disconnection in freight car operation like a centralized power supply mode;

[0020] In the motion conversion step of the utility model, two positive and negative one-way bearings and bevel gear 1 and bevel gear 2 on a gear shaft are used, which can not only convert linear motion into rotational motion, but also have the function of converting vibrations in different directions of up and down into continuous rotational motion in the same direction, and has the advantages of simple structure and high energy utilization efficiency; under the action of vibration, the bolster of the bogie moves up and down relative to the side frame, and when moving downward, it drives the one-way bearing 1 gear to transfer energy, and when moving upward, it becomes the right one-way bearing 2 gear to transfer energy, and finally converted into continuous rotational motion output in the same direction through bevel gear 3. This method can not only improve the vibration conversion efficiency, but also reduce the impact vibration and machine damage in the motion conversion process;

[0021] In the energy limiting step of the utility model, the torque limiter is used to directly consume the abnormal impact vibration energy that is far greater than the normal situation, thereby avoiding damage and impact on the rear-end power generation structure and the entire equipment;

[0022] In the speed-increasing step of the utility model, a compact speed-increasing mechanism is adopted, which can not only reduce the occupied space, but also better adapt to the working characteristics of the generator and improve the power generation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model is a schematic diagram of the structure of a device for generating electricity by collecting vibration energy of a bogie.

[0024] Among them: 1. Rack; 2. Gear shaft; 3. Bevel gear 1; 4. One-way bearing 1; 5. Bevel gear 2; 6. One-way bearing 2; 7. Bevel gear 3; 8. Torque limiter; 9. Planetary gearbox; 10. Generator; 11. Device housing. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the equipment or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection 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.

[0028] The following combination Figure 1 The specific implementation methods of the utility model are described in detail, and the technical effects that can be achieved by the utility model are further explained.

[0029] Figure 1 In the figure, the vibration transmission mechanism includes a rack 1 and a device housing 11, the motion conversion mechanism includes a gear shaft 2, a bevel gear 1 3, a one-way bearing 1 4, a bevel gear 2 5, a one-way bearing 2 6 and a bevel gear 3 7, the torque limiting mechanism includes a torque limiter 8 and a coupling structure, the speed increasing mechanism includes a planetary gearbox 9 and a coupling structure, and the power generation mechanism includes a generator 10 and a coupling structure.

[0030] The utility model is a method for collecting and generating electricity from the vibration energy of a bogie during the operation of a railway freight car. In this embodiment, a rack 1 of a vibration transmission mechanism and a device housing 11 are respectively fixed on the bolster and the side frame of the bogie, a gear and a rack 1 are matched on the left side of a gear shaft 2, and a pair of positive and negative one-way bearings 1 and 2 are installed on the right side. The one-way bearings 1 and 2 are respectively matched with bevel gears 1 and 2 5, and the bevel gears 1 and 2 5 are matched with bevel gears 3 and 7 from the left and right sides, respectively. The bevel gears 3 and 7 are connected with a torque limiter 8 through a coupling structure, and the torque limiter 8 is connected with a planetary gearbox 9 through a coupling structure, and the output end of the planetary gearbox 9 is connected with a generator 10 through a coupling structure;

[0031] During the operation of railway freight cars, the vibration generated by the vehicle will cause the bolster to move up and down relative to the side frame, driving the rack 1 and the device housing 11 to produce relative movement. When the rack 1 moves upward relatively, it will drive the gear shaft 2 connected thereto to rotate clockwise (seen from the left), and drive the left-side one-way bearing 14 and the bevel gear 13 tightly matched therewith to rotate in the same direction, and then through the connection between the bevel gear 13 and the bevel gear 3 7, it is converted into the bevel gear 3 7 to rotate clockwise (seen from top to bottom), and the one-way bearing 2 6 on the right side rotates idly due to the one-way action and does not transmit force; when the rack 1 moves downward relatively, it will drive the gear shaft 2 connected thereto to rotate counterclockwise (seen from the left), and The one-way bearing 2 6 on the right side and the bevel gear 2 5 tightly matched therewith are driven to rotate in the same direction, and then the bevel gear 2 5 is connected with the bevel gear 3 7 to convert it into a clockwise (viewed from top to bottom) rotation. The one-way bearing 1 4 on the left side is idle and does not transmit force due to the one-way action. In this way, no matter whether the vibration direction of the front end is upward or downward, the rotation direction of the bevel gear 3 7 finally converted to the front end of the generator 10 is a continuous clockwise rotation direction. This can not only improve the efficiency of vibration energy collection, but also make the product run more smoothly, and will not cause pulse impact on the product and difficulty in energy collection (only intermittent one-way collection) due to frequent reversing.

[0032] The bevel gear is connected to the torque limiter 8 through a coupling structure. When an impact vibration far greater than normal occurs at the front end, the excess vibration impact energy can be consumed through the torque limiter 8 structure to avoid damage to the entire power generation equipment and keep the torque of the rear-end power generation equipment within an appropriate range.

[0033] The torque limiter 8 transmits the rotational motion to the planetary gearbox 9 through the coupling structure, and accelerates the rotational motion by using the compact planetary gear structure, so that the output rotational speed is within the section with higher utilization efficiency of the generator 10, thereby improving the energy collection efficiency.

[0034] The planetary gearbox 9 transmits the accelerated rotational motion to the generator 10 through the coupling structure to generate electricity, converting the collected vibration energy into electrical energy, thus completing the power generation step.

[0035] Through the above steps, the whole process of collecting vibration energy of railway freight car bogie to generate electricity is completed.

[0036] The details not described in the present invention are all known technologies to those skilled in the art.

[0037] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A power generation device for collecting vibration energy of a bogie, comprising a bolster and a side frame, wherein the bolster vibrates relative to the side frame, characterized in that: Also includes a rack and a device housing; The rack is mounted on the bolster; The device housing is installed on the side frame, and the device housing is installed with a gear shaft and a generator. The outer end of the gear shaft is connected to a gear, and the inner end is connected to a two-way conversion unit; the gear and the rack are meshed with each other; the two-way conversion unit is connected to the generator; wherein the two-way conversion unit includes a one-way bearing 1 and a one-way bearing 2, the one-way bearing 1 and the one-way bearing 2 are sleeved in the inner section of the gear shaft at an interval, and the one-way bearing 1 and the one-way bearing 2 are installed in reverse, the one-way bearing 1 is sleeved on the outer periphery of the one-way bearing 1, the one-way bearing 2 is sleeved on the outer periphery of the one-way bearing 2, and also includes a bevel gear 3, the bevel gear 1 and the bevel gear 3 are meshed with each other, the bevel gear 2 and the bevel gear 3 are meshed with each other, the bevel gear 3 is sleeved on the upper end of the transmission shaft, and the lower end of the transmission shaft is connected to the generator.

2. The power generation device for collecting bogie vibration energy according to claim 1, characterized in that: A torque limiter is also included, and the torque limiter is installed between the transmission shaft and the generator input shaft.

3. The power generation device for collecting bogie vibration energy according to claim 2, characterized in that: A planetary gearbox is also included, and the planetary gearbox is installed between the torque limiter and the generator input shaft.

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