Suspension method and suspension device for shaft drive motor of built-in bogie

Abstract

The invention discloses a suspension method and a suspension device for a shaft drive motor of a built-in bogie, the built-in bogie adopts the shaft drive motor which directly transmits torque to a wheel pair, the shaft drive motor is sleeved on an axle in a hanging manner by adopting a hoisting beam parallel to the axle, and two ends of the hoisting beam are respectively contacted with a primary suspension spring; inertial load of the traction motor is directly transmitted to the primary spring and the framework, the lower portion of the driving motor is connected with a cross beam of the framework through a counter-acting force beam, and torsion counter-acting force acts on the cross beam of the framework through the counter-acting force beam. The connection points between the hoisting beam and the shaft drive motor, between the shaft drive motor and the counter-acting force beam and between the counter-acting force beam and the cross beam of the framework are all connected through rubber nodes, the bogie suspension structure is effectively simplified, the stress state is good, and the motor suspension reliability is high.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit vehicle bogies, and in particular to a suspension method and a suspension device for an axle-driven motor of a built-in bogie. Background Art

[0002] The bogie is a running device that supports the train body and can rotate relative to the train body. It usually includes a frame, axle box device, a spring damping device, a drive motor, a transmission device and a basic brake device.

[0003] Traditional drive motors are divided into two types of suspension: body suspension and frame suspension. The body suspension method suspends the motor on the car body and transmits the torque to the wheelset through the universal shaft and gearbox. The frame suspension method suspends the motor on the bogie frame and transmits the torque to the wheelset through the coupling and gearbox. The body suspension method has a more complex transmission system structure and a larger volume, so the mainstream rail train motor suspension is frame suspension.

[0004] With the development of motor technology, shaft-driven motors have emerged that can be mounted on the axle and transmit torque directly to the wheelset through a coupling, eliminating the gearbox, greatly simplifying the structure of the transmission device and reducing its weight. The shaft-driven motor also needs to be suspended on the frame, which is essentially a frame-suspended type;

[0005] The above-mentioned traditional frame-mounted motor suspension is essentially a cantilever beam installed on the frame beam. The center of gravity of the shaft-driven motor is much farther from the frame beam than the traditional frame-mounted motor. The increase in the length of the cantilever beam will inevitably cause the problem of insufficient strength of the mounting seat on the frame beam. In order to solve this problem, the usual practice is to strengthen the motor mounting seat on the frame beam or add end beams to the frame to change the motor suspension from a cantilever beam to a simply supported beam. Both methods will cause the structure of the bogie to become complicated and increase the weight. In addition, the traditional motor suspension first transfers the motor torsional reaction force and inertial load to the frame beam, and then transfers it to the side beam through the lateral side beam connection, and then transfers the lateral and longitudinal loads to the primary positioning device, and the vertical load to the primary spring. The load transmission line is long and rugged, and a stronger structure is required to meet the strength requirements. Summary of the invention

[0006] The purpose of the present invention is to overcome the defects of the prior art and provide a method and a suspension device for suspending an axle-driven motor of a built-in bogie, which can reduce the weight of the bogie, simplify the structure and improve the reliability.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] The present invention discloses a method for suspending a built-in bogie shaft-driven motor;

[0009] In this method, the built-in bogie adopts an axle drive motor that directly transmits torque to the wheelset. The axle drive motor is mounted on the axle in the form of a suspension using a hoisting beam parallel to the axle. Both ends of the hoisting beam are respectively in contact with a series of suspension springs, directly transmitting the inertial load of the traction motor to the series of springs and the frame. The lower part of the drive motor is connected to the crossbeam of the frame through a reaction beam, and the torsional reaction force is applied to the crossbeam of the frame through the reaction beam. The connection points between the hoisting beam and the axle drive motor, the axle drive motor and the reaction beam, and the reaction beam and the crossbeam of the frame are all connected by rubber nodes.

[0010] Furthermore, the lifting beam is placed directly above the motor, and the shaft drive motor is suspended in the form of two lifting points, the two lifting points are distributed at both ends of the top of the shaft drive motor, and the center points of the two lifting points coincide with the lateral position of the center of gravity of the shaft drive motor.

[0011] Furthermore, two reaction force beams are used and are symmetrically arranged at both ends of the shaft drive motor, and the end of the reaction force beam connected to the shaft drive motor is located below the central axis of the shaft drive motor.

[0012] The present invention provides a suspension device for realizing the above-mentioned internal bogie axle-driven motor suspension method, comprising: a motor mounted on the axle;

[0013] A suspension beam mounted above the motor and arranged parallel to the axle; and

[0014] Reaction rod;

[0015] Wherein, a suspension connection point is arranged in the middle of the suspension beam, and the connection point is connected to the motor through a rubber suspension beam node, and mounting planes in contact with a series of suspension springs are formed at both ends of the suspension beam, and the series of suspension springs are provided with a connection structure connecting the suspension beam and the frame;

[0016] Both ends of the reaction force rod are equipped with rubber reaction force nodes, and are respectively connected to the motor connection point arranged on the motor and the crossbeam connection point arranged on the crossbeam of the frame through the reaction force nodes.

[0017] Furthermore, the connection structure is a positioning pin arranged on the upper part of the first-order suspension spring, and the positioning pin passes through the pin hole at the end of the suspension beam and is connected with the pin hole of the frame.

[0018] Furthermore, a first node mounting hole penetrating the suspension beam is provided in the middle of the suspension beam, the mounting hole is interference fit with the node of the rubber suspension beam, and both ends of the node of the rubber suspension beam are connected with the motor bolts.

[0019] Furthermore, mounting holes penetrating the reaction force rod are provided at both ends of the reaction force rod, the mounting holes are interference fit with the rubber reaction force node, and both ends of the rubber reaction force node are connected with the motor and the crossbeam bolts of the frame.

[0020] Furthermore, the suspension beam and the reaction rod are both made of low-density and high-strength metal materials.

[0021] In the above technical solution, the present invention provides a method and a suspension device for suspending a built-in bogie shaft drive motor, which have the following beneficial effects:

[0022] The present invention arranges a suspension beam just above the shaft drive motor, the motor is suspended on the suspension beam through a rubber node, the suspension beam is connected to a series of suspension springs through a connecting pin and is positioned and connected to the frame, and at the same time, the lower part of the motor is connected to the frame crossbeam through a reaction force rod. Compared with the traditional drive motor suspension structure, the suspension device has a simplified structure and a good stress state, solves the problems of complex bogie suspension structure and heavy weight, can realize lightweight frame, simplifies the structure of the existing motor suspension system, reduces weight, and improves the reliability of the motor suspension. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a structural schematic diagram of a built-in bogie axle drive motor suspension device disclosed in the present invention;

[0025] Figure 2 It is a schematic diagram of the installation of the end of a suspension beam of a built-in bogie axle drive motor suspension device disclosed by the present invention between a primary spring and a frame;

[0026] Figure 3 The invention discloses a schematic diagram of installing a built-in bogie shaft drive motor suspension device on a frame.

[0027] Description of reference numerals:

[0028] 1. Suspension beam; 2. Suspension node; 3. Reaction rod; 4. Reaction node; 5. Motor; 6. Primary suspension spring; 7. Frame; 8. Locating pin. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] See also Figure 1 As shown;

[0031] A method for suspending an axle drive motor of an internal bogie is invented. In this method, the internal bogie adopts an axle drive motor that directly transmits torque to a wheel pair. The axle drive motor is mounted on the axle in a hanging form by a hoisting beam parallel to the axle. Both ends of the hoisting beam are respectively in contact with a series of suspension springs to directly transmit the inertial load of the traction motor to the series of springs and a frame. The lower part of the drive motor is connected to a crossbeam of the frame through a reaction beam, and a torsional reaction force is applied to the crossbeam of the frame through the reaction beam. The connection points between the hoisting beam and the axle drive motor, the axle drive motor and the reaction beam, and the reaction beam and the crossbeam of the frame are all connected by rubber nodes.

[0032] In the method, a hoisting beam is arranged directly above the shaft drive motor, the shaft drive motor is hung on the hoisting beam through a rubber node, and the hoisting beam is directly connected to a series of suspension springs and is connected to the frame at the same time. The lower part of the shaft drive motor is directly connected to the frame crossbeam through a reaction beam, which simplifies the bogie structure and has a good stress state, effectively solves the problem of complex bogie suspension structure and heavy weight, and can achieve the purpose of lightweighting the frame. At the same time, rubber nodes are used at the connection points between the hoisting beam and the shaft drive motor, the shaft drive motor and the reaction beam, and the reaction beam and the frame crossbeam, which can provide reasonable suspension stiffness for the motor suspension.

[0033] Preferably, the hoisting beam is placed directly above the shaft drive motor, and the shaft drive motor is suspended in the form of two suspension points, the two suspension points are distributed at both ends of the top of the shaft drive motor, and the center points of the two suspension points coincide with the lateral position of the center of gravity of the shaft drive motor, thereby avoiding the generation of additional torque, and the suspension points use rubber nodes to effectively alleviate the mutual influence of vibration on the shaft drive motor and the hoisting beam, two reaction force beams are used, and are symmetrically arranged at both ends of the shaft drive motor, the end of the reaction force beam connected to the shaft drive motor is located below the central axis of the shaft drive motor, the farther the connection end of the reaction force beam and the shaft drive motor is from the suspension point of the hoisting beam, the smaller the reaction force, and the other end of the reaction force beam is connected to the crossbeam of the frame;

[0034] See also Figure 1 As shown:

[0035] A suspension device for realizing the above-mentioned internal bogie axle drive motor suspension method is invented, comprising:

[0036] A motor 5 mounted on the axle, a suspension beam 1 mounted above the motor 5 and arranged parallel to the axle, and two reaction rods 3;

[0037] Among them, motor 5 is a shaft drive motor that directly transmits torque to the wheelset;

[0038] A suspension connection point is provided in the middle of the suspension beam 1, and the connection point is connected to the motor 5 through the rubber suspension beam node 2. The motor 5 is suspended from two points at the ends of the motor 5. The motor 5 is located in the middle of the suspension beam 1. The two ends of the suspension beam 1 form a mounting plane (such as Figure 2 As shown), the mounting plane is located on the primary suspension spring 6 of the bogie, and the primary suspension spring 6 is provided with a connecting structure connecting the suspension beam 1 and the frame 7, and the installation and accurate positioning of the suspension beam 1 are achieved through the connecting structure;

[0039] Both ends of the reaction force rod 3 are installed with rubber reaction force nodes 4, and are respectively connected to the motor connection point set on the motor 5 and the beam connection point set on the beam of the frame 7 through the reaction force nodes 4:

[0040] Specifically, the motor suspension device directly transmits the inertial load (the load caused by the weight of the motor) of the motor 5 to a series of suspension springs 6 and a frame 7 through a suspension beam 1, and at the same time applies the torsional reaction force to the frame crossbeam through the reaction rod 3, thereby achieving structural simplification, good stress state, and lightweight of the frame. In addition, the suspension beam 1 and the reaction rod 3 are both low-density and high-strength metal materials. Specifically, the lifting beam and the reaction beam are cast with aluminum-based composite materials with low-density characteristics to achieve the purpose of weight reduction, and the suspension beam 1 and the reaction rod 3 are connected by rubber nodes to provide reasonable suspension stiffness for the motor suspension.

[0041] See also Figure 2 As shown:

[0042] The connecting structure is a locating pin 8 arranged on the upper part of the primary suspension spring 6. The locating pin 8 passes through the pin hole at the end of the suspension beam 1 and the pin hole of the frame 7 for connection. The suspension beam 1 is positioned and connected with the primary suspension spring 6 and the frame 7 through the locating pin 8, which not only realizes the installation of the suspension beam 1 but also realizes the accurate positioning of the suspension beam 1.

[0043] A first node mounting hole penetrating the suspension beam 1 is provided in the middle of the suspension beam 1, and the mounting hole is interference-fitted with the rubber suspension beam node 2. Both ends of the rubber suspension beam node 2 are bolted to the motor 5, so that the motor 5 is suspended just below the middle of the suspension beam 1;

[0044] See also Figure 3 As shown:

[0045] Both ends of the reaction rod 3 are provided with mounting holes penetrating the reaction rod 3, the mounting holes are interference fit with the rubber reaction node 4, and both ends of the rubber reaction node 4 are connected with the motor 5 and the crossbeam bolts of the frame 7, so the structure is stable and the connection is reliable.

[0046] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A method for suspending a built-in bogie shaft drive motor, characterized in that: In this method, the built-in bogie adopts an axle drive motor that directly transmits torque to the wheelset. The axle drive motor is mounted on the axle in the form of a suspension using a hoisting beam parallel to the axle. Both ends of the hoisting beam are respectively in contact with a series of suspension springs, directly transmitting the inertial load of the traction motor to the series of springs and the frame. The lower part of the drive motor is connected to the crossbeam of the frame through a reaction beam, and the torsional reaction force is applied to the crossbeam of the frame through the reaction beam. The connection points between the hoisting beam and the axle drive motor, the axle drive motor and the reaction beam, and the reaction beam and the crossbeam of the frame are all connected by rubber nodes.

2. A method for suspending a built-in bogie shaft drive motor according to claim 1, characterized in that ； The lifting beam is placed directly above the motor, and the shaft drive motor is suspended in the form of two lifting points. The two lifting points are distributed at both ends of the top of the shaft drive motor, and the center points of the two lifting points coincide with the lateral position of the center of gravity of the shaft drive motor.

3. The method for suspending a built-in bogie shaft drive motor according to claim 1, characterized in that ； Two reaction force beams are used and are symmetrically arranged at both ends of the shaft drive motor, and the end of the reaction force beam connected to the shaft drive motor is located below the central axis of the shaft drive motor.

4. A suspension device for realizing the internal bogie axle drive motor suspension method according to claim 1, characterized in that: include: A motor (5) mounted on the axle; A suspension beam (1) installed above the motor (5) and arranged parallel to the axle; as well as Reaction rod (3); A suspension connection point is provided in the middle of the suspension beam (1), and the connection point is connected to the motor (5) via a rubber suspension beam node (2); mounting planes in contact with a series of suspension springs (6) are formed at both ends of the suspension beam (1), and the series of suspension springs (6) are provided with a connection structure connecting the suspension beam (1) and a frame (7); Both ends of the reaction force rod (3) are equipped with rubber reaction force nodes (4), and are respectively connected to a motor connection point provided on the motor (5) and a crossbeam connection point provided on the crossbeam of the frame (7) through the reaction force nodes (4).

5. The suspension device of the internal bogie shaft drive motor suspension method according to claim 4 is characterized in that ； The connection structure is a positioning pin (8) arranged on the upper part of the primary suspension spring (6), and the positioning pin (8) passes through the pin hole at the end of the suspension beam (1) and is connected with the pin hole of the frame (7).

6. The suspension device of the internal bogie shaft drive motor suspension method according to claim 4 is characterized in that ； A first node mounting hole penetrating the suspension beam (1) is provided in the middle of the suspension beam (1); the mounting hole is interference-fitted with the rubber suspension beam node (2); and both ends of the rubber suspension beam node (2) are bolt-connected to the motor (5).

7. The suspension device of the internal bogie shaft drive motor suspension method according to claim 4, characterized in that; Both ends of the reaction force rod (3) are provided with mounting holes penetrating the reaction force rod (3); the mounting holes are interference fit with the rubber reaction force node (4); and both ends of the rubber reaction force node (4) are connected to the motor (5) and the crossbeam bolts of the frame (7).

8. The suspension device of the internal bogie shaft drive motor suspension method according to claim 4 is characterized in that ； The suspension beam (1) and the reaction force rod (3) are both made of low-density and high-strength metal materials.

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