Rail brake motor cylinder

Abstract

The utility model discloses a rail brake motor cylinder. Comprising a motor, a planetary gear reducer, a push rod component, an energy storage mechanism and a push rod connector. The motor is connected with the planetary gear speed reducer, the planetary gear speed reducer is connected with the push rod component, the push rod component is sleeved with the energy storage mechanism, and the energy storage mechanism is connected with the push rod connector; the push rod component comprises a push rod, a push rod nut and a push rod sheath, the push rod sheath is arranged on the planetary gear speed reducer, the push rod is arranged in the push rod sheath, the push rod is connected with the planetary gear speed reducer, the push rod is sleeved with the push rod nut, the push rod nut is slidably sleeved with an energy storage mechanism, and the energy storage mechanism is located in the push rod sheath; the push rod is a lead screw with a self-locking function, and the energy storage mechanism stores energy through pressure of a push rod nut and a push rod connector when the motor works and releases the stored energy when the motor stops. Energy is stored through the belleville spring when the motor works, the self-locking function of the trapezoidal lead screw is matched, the stored energy is released after the motor stops, braking force of a fixed value is continuously output, stable output of a train braking cylinder is guaranteed, and the stability of train braking is guaranteed.

Description

Technical fields:

[0001] This utility model belongs to the field of rail train braking technology, and specifically relates to a rail brake motor cylinder. Background technology:

[0002] During the operation of a rail train, when braking is required, the train's brake cylinder will output a certain braking force to push the brake friction pads, which then contact the braking structure to achieve wheel braking.

[0003] When a train is braking to a stop or when it needs to maintain a certain braking force, the train brake cylinder not only needs to output braking force, but also needs to maintain this braking force. Therefore, the output stability requirement of the train brake cylinder is very high. How to ensure the stable output of the train brake cylinder is a problem that needs to be solved.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content:

[0005] The purpose of this utility model is to provide a track brake motor cylinder, thereby overcoming the defects in the prior art.

[0006] To achieve the above objectives, this utility model provides a track brake motor cylinder, including a motor, a planetary gear reducer, a push rod assembly, an energy storage mechanism, and a push rod connector. The motor is connected to the planetary gear reducer, the planetary gear reducer is connected to the push rod assembly, and an energy storage mechanism is fitted onto the push rod assembly, which is connected to the push rod connector. The push rod assembly includes a push rod, a push rod nut, and a push rod sleeve. The push rod sleeve is mounted on the planetary gear reducer, and a push rod is housed within the push rod sleeve. The push rod is connected to the planetary gear reducer, and a push rod nut is fitted onto the push rod. An energy storage mechanism is slidably fitted onto the push rod nut, and the energy storage mechanism is located within the push rod sleeve. The push rod is a lead screw with a self-locking function. The energy storage mechanism stores energy through the pressure of the push rod nut and the push rod connector when the motor is working, and releases the stored energy when the motor stops.

[0007] Preferably, in the technical solution, the push rod is a trapezoidal lead screw.

[0008] Preferably, in the technical solution, the energy storage mechanism includes a butterfly spring, a spring connecting sleeve, and an energy storage support sleeve. The spring connecting sleeve is slidably fitted onto the push rod nut. The butterfly spring is positioned between the push rod nut and the spring connecting sleeve. The spring connecting sleeve is connected to the energy storage support sleeve, and the energy storage support sleeve is connected to the push rod connector. A support member is provided at the end of the push rod sleeve, and the energy storage support sleeve is slidably connected to the support member. When the motor is working, the butterfly spring stores energy through the pressure of the push rod nut and the push rod connector, and releases the stored energy when the motor stops.

[0009] Preferably, in the technical solution, a tensile and compressive stress sensor is installed on the planetary gear reducer at the rear end of the push rod to monitor the reaction force applied by the energy storage mechanism to the push rod component in real time, thereby realizing the monitoring of the braking force output by the electric cylinder.

[0010] Preferably, in the technical solution, the connection points of each component of the track brake motor cylinder are sealed with double-layered self-locking anti-loosening washers, and auxiliary thread anti-loosening adhesive is used for secondary anti-loosening treatment.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The disc spring stores energy during motor operation, and in conjunction with the self-locking function of the trapezoidal lead screw, releases the stored energy after the motor stops, continuously outputting a fixed amount of braking force to ensure the stable output of the train brake cylinder and thus guarantee the stability of train braking. Attached image description:

[0013] Figure 1 This is a schematic diagram of the track brake motor cylinder structure of this utility model;

[0014] Figure 2 This is a top view of the track brake motor cylinder of this utility model;

[0015] Figure 3 for Figure 2 A sectional view along the AA direction. Detailed implementation method:

[0016] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0017] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0018] like Figure 1-3As shown, a track brake motor cylinder includes a motor 1, a planetary gear reducer 2, a push rod assembly 3, an energy storage mechanism 4, a push rod connector 5, and a tension / compression stress sensor 6. The motor 1 is connected to the planetary gear reducer 2, the planetary gear reducer 2 is connected to the push rod assembly 3, the push rod assembly 3 is fitted with the energy storage mechanism 4, and the energy storage mechanism 4 is connected to the push rod connector 5. The connections of each component of the track brake motor cylinder are sealed with double-layered self-locking anti-loosening washers, and secondary anti-loosening treatment is performed with auxiliary thread anti-loosening rubber. The push rod assembly 3 includes a trapezoidal lead screw 30, a push rod nut 31, and a push rod sleeve 32. The push rod sleeve 32 is disposed on the planetary gear reducer 2, and the trapezoidal lead screw 30 is disposed inside the push rod sleeve 32. The trapezoidal lead screw 30 is connected to the transmission gear set in the planetary gear reducer 2, and the push rod nut 31 is fitted on the trapezoidal lead screw 30.

[0019] The energy storage mechanism 4 includes a butterfly spring 40, a spring connecting sleeve 41, and an energy storage support sleeve 42. The spring connecting sleeve 41 is slidably fitted onto the push rod nut 31. The butterfly spring 40 is positioned between the push rod nut 31 and the spring connecting sleeve 41. The spring connecting sleeve 41 is connected to the energy storage support sleeve 42, and the energy storage support sleeve 42 is connected to the push rod connector 5. A support member 33 is provided at the end of the push rod sleeve 32, and the energy storage support sleeve 42 is slidably connected to the support member 33. When the motor 1 is working, the butterfly spring 40 stores energy through the pressure of the push rod nut 31 and the push rod connector 5, and releases the stored energy when the motor 1 stops.

[0020] A tensile and compressive stress sensor 6 is installed on the planetary gear reducer 2 at the rear end of the trapezoidal lead screw 30 to monitor the reaction force applied by the energy storage mechanism to the push rod component in real time, thereby realizing the monitoring of the braking force output by the electric cylinder.

[0021] When the train needs to stop or brake, or when it needs to be controlled at a certain braking force value, motor 1 starts. Motor 1, planetary gear reducer 2, trapezoidal lead screw 30, push rod nut 31, butterfly spring 40, spring connecting sleeve 41, energy storage support sleeve 42, and push rod joint 5 form a force transmission link. The braking force is transmitted to the trapezoidal lead screw 30 along the force transmission link. When the trapezoidal lead screw 30 rotates, the push rod nut 31 moves forward on the trapezoidal lead screw 30, which drives the butterfly spring 40, spring connecting sleeve 41, and energy storage support sleeve 42 to move towards the push rod joint 5. During the movement, the energy storage mechanism 4 comes into contact with the push rod joint 5. Since a load is applied in front of the push rod joint 5 (the brake gradually takes effect), and the load will gradually increase, the spring connecting sleeve 41 and energy storage support sleeve 42 are subjected to the reaction force of the push rod joint 5. The spring connecting sleeve 41 slides backward on the push rod nut 31 to compress the butterfly spring 40, and the butterfly spring 40 is compressed to store energy. When the set braking force is reached, motor 1 stops. At this time, trapezoidal lead screw 30 self-locks, and butterfly spring 40 releases the stored energy. Butterfly spring 40 continuously applies pressure to spring connecting sleeve 41 and energy storage support sleeve 42. Force-sensing spring connecting sleeve 41 and energy storage support sleeve 42 continuously act on push rod joint 5 to maintain the braking force and ensure the stability of train braking.

[0022] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A rail brake motor cylinder, characterized in that: It includes a motor, a planetary gear reducer, a push rod component, an energy storage mechanism, and a push rod joint; the motor is connected to the planetary gear reducer, the planetary gear reducer is connected to the push rod component, the push rod component is sleeved with an energy storage mechanism, and the energy storage mechanism is connected to the push rod joint; the push rod component includes a push rod, a push rod nut, and a push rod sleeve, the push rod sleeve is arranged on the planetary gear reducer, a push rod is arranged in the push rod sleeve, the push rod is connected to the planetary gear reducer, a push rod nut is sleeved on the push rod, the push rod nut is slidably sleeved with an energy storage mechanism, and the energy storage mechanism is located in the push rod sleeve; The push rod is a screw rod with a self-locking function. The energy storage mechanism stores energy through the pressure of the push rod nut and the push rod joint when the motor is working, and releases the stored energy when the motor stops.

2. The rail brake motor cylinder according to claim 1, characterized in that: The push rod uses a trapezoidal screw.

3. The rail brake motor cylinder according to claim 1, characterized in that: The energy storage mechanism includes a butterfly spring, a spring connecting sleeve, and an energy storage support sleeve. The spring connecting sleeve can be slidably mounted on the push rod nut. The butterfly spring is placed between the push rod nut and the spring connecting sleeve. The spring connecting sleeve is connected to the energy storage support sleeve, and the energy storage support sleeve is connected to the push rod joint. A support member is provided at the end of the push rod sleeve, and the energy storage support sleeve is slidably connected to the support member. When the motor is working, the butterfly spring stores energy through the pressure of the push rod nut and the push rod joint, and releases the stored energy when the motor stops.

4. The rail brake motor cylinder according to claim 1, characterized in that: A tensile and compressive stress sensor is arranged on the planetary gear reducer at the rear end of the push rod.

5. The rail brake motor cylinder according to claim 1, characterized in that: The joints of the rail brake motor cylinder components are sealed with double-stacked self-locking anti-loosening washers, and auxiliary thread anti-loosening glue is used for secondary anti-loosening treatment.

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