Double-source driving steering system and train double-source driving steering device thereof

Abstract

The utility model discloses a double-source drive steering system and a train double-source drive steering device thereof, and relates to the technical field of virtual rail train steering systems. A rotating shaft is arranged in the transition mounting seat, and worm gear teeth are arranged on the periphery of the rotating shaft; the transmission shaft is arranged between the steering wheel and the transition mounting seat and is used for transmitting the rotating motion and the torque of the steering wheel to the rotating shaft; the steering motor is arranged at the side part of the transition mounting seat, and an output shaft of the steering motor is meshed with the rotating shaft to form a worm and gear structure; the axle is used for driving a hub of a vehicle to rotate; and the steering gear is arranged between the rotating shaft and the axle and used for transmitting the torque of the rotating shaft to the axle. According to the device, the compatibility problem of the steering system on active control and passive control can be solved, the arrangement scheme of the steering system is optimized, and the occupied space is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of virtual track train steering system, and more specifically, to a dual-source drive steering device for a train. In addition, it also relates to a dual-source drive steering system comprising the dual-source drive steering device for a train. Background Art

[0002] In the related technologies, the super virtual rail train combines the characteristics of rail transit and road traffic, adopts a multi-section marshaling and rubber-wheel bearing mode, and has become a new choice for small and medium-sized cities in medium and low-capacity transportation. Most virtual rail trains use a multi-axis cooperative steering control system to achieve the rear wheel trajectory following the front wheel trajectory. In order to achieve dual-end driving, the steering systems of the head and tail axles must be compatible with the active steering controlled by the driver's steering wheel when serving as the head end and the passive steering controlled by the multi-axis cooperative steering control system when serving as the tail end. However, there are still problems with the compatibility of the steering systems of the head and tail axles with active control and passive control, and the steering system structure is relatively complex and requires a large space.

[0003] In summary, how to solve the compatibility problem of the steering system for active control and passive control, and how to optimize the layout of the steering system to reduce the occupied space are problems that need to be urgently solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a dual-source drive steering device for a train, which can solve the compatibility problem of the steering system for active control and passive control, and the steering system and optimize the layout scheme to reduce the occupied space.

[0005] Another object of the utility model is to provide a dual-source drive steering system including the above-mentioned train dual-source drive steering device.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A dual-source driven steering device for a train, comprising:

[0008] steering wheel;

[0009] A transition mounting seat, in which a rotating shaft is arranged, and the outer periphery of the rotating shaft is provided with worm gear teeth;

[0010] A transmission shaft, which is disposed between the steering wheel and the transition mounting seat, and is used to transmit the rotational motion and torque of the steering wheel to the rotating shaft;

[0011] A steering motor is arranged on the side of the transition mounting seat, and the output shaft of the steering motor is meshed with the rotating shaft to form a worm gear structure;

[0012] The axle is used to drive the wheel hub of the vehicle to rotate;

[0013] A steering gear is arranged between the rotating shaft and the axle, and is used for transmitting the torque of the rotating shaft to the axle.

[0014] In one embodiment, a plurality of the transmission shafts are sequentially connected between the steering wheel and the transition mounting seat, and a steering column is provided between two adjacent transmission shafts.

[0015] In one embodiment, a steering motor is provided on one side of the transition mounting seat;

[0016] Or the steering motors are respectively provided on both sides of the transition mounting seat.

[0017] In one embodiment, the steering gear comprises a recirculating ball steering gear or a rack and pinion steering gear.

[0018] In one embodiment, the invention further comprises a battery for supplying power to the steering motor.

[0019] In one embodiment, both ends of the axle are respectively hinged to a connecting rod assembly, and the connecting rod assembly is used to be hinged to a central axis of the wheel hub.

[0020] In one embodiment, one side of the steering gear is hinged to one end of a transition rod, and the other end of the transition rod is hinged to the connecting rod assembly.

[0021] A dual-source drive steering system comprises: a dual-source drive steering device for a train as described in any one of the above items and a wheel hub, wherein the wheel hub is arranged at both ends of an axle.

[0022] When using the dual-source drive steering device for trains provided by the utility model, the driver can turn the steering wheel, and the rotational motion of the steering wheel can be transmitted to the shaft of the transition mounting seat through the transmission shaft. At this time, the steering motor does not run, and the output shaft of the steering motor (similar to a worm) is not locked, and the output shaft can rotate synchronously with the shaft. Then, the rotational motion and torque of the shaft can be transmitted to the axle through the steering gear, and finally, the wheel hub of the vehicle can rotate circumferentially under the rotation of the axle, realizing the vehicle driving operation and active steering operation.

[0023] In addition, since the output shaft of the steering motor (similar to a worm) is meshed with the rotating shaft to form a worm gear structure, during use, the steering motor can also be controlled to output torque to rotate the output shaft, and then the worm gear structure can be used to affect the rotation of the rotating shaft in the transition mounting seat, and then the rotating shaft in the transition mounting seat transmits the rotational motion and torque to the steering gear, and the steering gear transmits the torque to the axle, and finally, the wheel hub of the vehicle can rotate circumferentially under the rotation of the axle, realizing the vehicle driving operation and passive steering operation.

[0024] The torque transmission of the steering wheel and the torque transmission of the steering motor in the device share a set of steering actuators (including a worm gear structure and a steering gear). The device has a compact structure and occupies a small space. In addition, the device can effectively solve the compatibility problem of the steering systems of the fore and aft shafts for active control and passive control.

[0025] In summary, the dual-source drive steering device for trains provided by the utility model can solve the compatibility problem of the steering system with active control and passive control, and the steering system and the optimized layout scheme can reduce the occupied space.

[0026] In addition, the utility model also provides a dual-source drive steering system including the above-mentioned dual-source drive steering device for trains. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0028] Figure 1 This is a schematic diagram of the structure of the dual-source drive steering device for trains provided by the utility model;

[0029] Figure 2 It is a connection diagram of the transition mounting seat and the steering motor;

[0030] Figure 3 It is a schematic diagram of the structure of the worm gear structure.

[0031] Figure 1-Figure 3 middle:

[0032] 1 is a steering wheel, 2 is a transition mounting seat, 21 is a rotating shaft, 22 is a worm gear, 3 is a transmission shaft, 4 is a steering motor, 41 is an output shaft, 5 is an axle, 6 is a steering gear, 7 is a connecting rod assembly, 8 is a transition rod, and 9 is a wheel hub. DETAILED DESCRIPTION

[0033] 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.

[0034] The core of the utility model is to provide a dual-source drive steering device for trains, which can solve the compatibility problem of the steering system for active control and passive control, and the steering system and optimize the layout scheme to reduce the occupied space. Another core of the utility model is to provide a dual-source drive steering system including the above-mentioned dual-source drive steering device for trains.

[0035] Please refer to Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of the dual-source drive steering device for trains provided by the utility model; Figure 2 It is a connection diagram of the transition mounting seat and the steering motor; Figure 3 It is a schematic diagram of the structure of the worm gear structure.

[0036] This specific embodiment provides a train dual-source drive steering device, including:

[0037] Steering wheel 1;

[0038] A transition mounting seat 2, in which a rotating shaft 21 is arranged, and a worm gear 22 is arranged on the outer periphery of the rotating shaft 21;

[0039] The transmission shaft 3 is disposed between the steering wheel 1 and the transition mounting seat 2. The transmission shaft 3 is used to transmit the rotational motion and torque of the steering wheel 1 to the rotating shaft 21:

[0040] The steering motor 4 is arranged on the side of the transition mounting seat 2, and the output shaft 41 of the steering motor 4 is meshed with the rotating shaft 21 to form a worm gear structure;

[0041] Axle 5, which is used to drive the wheel hub 9 of the vehicle to rotate;

[0042] The steering gear 6 is disposed between the rotating shaft 21 and the axle 5 , and is used to transmit the torque of the rotating shaft 21 to the axle 5 .

[0043] It should be noted that the rotating shaft 21 and the transmission shaft 3 are coaxially connected, and the two rotate synchronously to transmit torque and rotational motion. In addition, a worm gear structure can be formed between the output shaft 41 and the rotating shaft 21 to achieve torque transmission. Figure 3 In actual use, the shape, structure, size, position, etc. of the steering wheel 1, the transition mounting seat 2, the transmission shaft 3, the steering motor 4, the axle 5 and the steering gear 6 can be determined according to actual conditions and actual needs.

[0044] When using the dual-source drive steering device for trains provided by the utility model, the driver can turn the steering wheel 1, and the rotational motion of the steering wheel 1 can be transmitted to the rotating shaft 21 of the transition mounting seat 2 through the transmission shaft 3. At this time, the steering motor 4 does not run, and the output shaft 41 (similar to the worm) of the steering motor 4 is not locked, and the output shaft 41 can rotate synchronously with the rotating shaft 21. Then, the rotational motion and torque of the rotating shaft 21 can be transmitted to the axle 5 through the steering gear 6. Finally, the wheel hub 9 of the vehicle can rotate circumferentially under the rotation of the axle 5, realizing the vehicle driving operation and active steering operation.

[0045] In addition, since the output shaft 41 (similar to a worm) of the steering motor 4 is meshed with the rotating shaft 21 to form a worm gear structure, during use, the steering motor 4 can also be controlled to operate to output torque to rotate the output shaft 41, and then the rotating shaft 21 in the transition mounting seat 2 can be affected by the worm gear structure to rotate, and then the rotating shaft 21 in the transition mounting seat 2 transmits the rotational motion and torque to the steering gear 6, and the steering gear 6 transmits the torque to the axle 5, and finally, the wheel hub 9 of the vehicle can rotate circumferentially under the rotation of the axle 5, so as to realize the vehicle driving operation and passive steering operation.

[0046] In the device, the torque transmission of the steering wheel 1 and the torque transmission of the steering motor 4 share a set of steering actuators (including a worm gear structure and a steering gear 6). The device has a compact structure and occupies a small space. In addition, the device can effectively solve the compatibility problem of the steering system of the fore and aft shafts for active control and passive control.

[0047] In summary, the dual-source drive steering device for trains provided by the utility model can solve the compatibility problem of the steering system with active control and passive control, and the steering system and the optimized layout scheme can reduce the occupied space.

[0048] In one embodiment, a plurality of transmission shafts 3 are sequentially connected between the steering wheel 1 and the transition mounting seat 2, and a steering column is arranged between two adjacent transmission shafts 3. Figure 1 As shown, multiple transmission shafts 3, rotating shafts 21 and axles 5 can cooperate in movement to transmit torque, thereby realizing multi-axis coordinated steering control operation.

[0049] In one embodiment, a steering motor 4 is provided on one side of the transition mounting seat 2; or steering motors 4 are provided on both sides of the transition mounting seat 2, and the structure is as follows: Figure 2 If two steering motors 4 are arranged on the transition mounting seat 2, one can be used and the other can be kept as a backup, so as to increase the service life of the device.

[0050] It should be noted that the steering motor 4 arranged on the transition mounting seat 2 is used to control the rotation of the worm, and torque transmission is realized through the output shaft 41 of the steering motor 4 and the rotating shaft 21 in the transition mounting seat 2 (the outer periphery of the rotating shaft 21 is provided with worm gear teeth 22), and then, the torque of the steering motor 4 is transmitted to the axle 5 through the steering gear 6.

[0051] In one embodiment, the steering gear 6 includes a recirculating ball steering gear 6 or a rack and pinion steering gear 6. That is, in actual use, the type of the steering gear 6 can be selected according to actual conditions and actual needs, and it is only necessary to ensure that the steering gear 6 can realize the torque transmission of the rotating shaft 21 in the transition mounting seat 2.

[0052] It should be noted that the rotational motion and torque of the steering wheel 1 can be transmitted to the rotating shaft 21 in the transition mounting seat 2 through the steering column and the transmission shaft 3. In addition, the steering motor 4 can also generate torque and then transmit it to the rotating shaft 21 in the transition mounting seat 2. Since the rotating shaft 21 of the transition mounting seat 2 is connected to the steering gear 6, the steering gear 6 can transmit the steering torque to the axle 5 to achieve active steering operation or passive steering operation.

[0053] In one embodiment, a battery for supplying power to the steering motor 4 is also included.

[0054] It should be noted that when the axle 5 serves as the main axle, the driver controls the rotation of the wheel hub 9 of the axle 5 by turning the steering wheel 1. At this time, the battery does not power the steering motor 4 because it does not receive the ignition signal from the heretic. When the steering motor 4 has no power supply, there is no torque output to the worm (output shaft 41). However, the worm is not locked and can move synchronously with the drive shaft 3. That is, the steering operation of the axle 5 at this time is achieved by the driver controlling the steering wheel 1. When the axle 5 serves as the tail axle, as the driver's cab completes the vehicle ignition, the battery powers the steering motor 4, and the steering motor 4 outputs torque according to the steering signal output by the multi-axis collaborative steering control system, thereby controlling the steering of the axle 5.

[0055] The working mode switching of the steering system of the device during end-to-end driving is directly controlled by the ignition signal in the driver's cab, and the control logic is simple and clear, which can effectively solve the problem of switching between active steering and passive steering of the fore and aft axles during end-to-end driving.

[0056] In order to further illustrate the steering operation provided by the present invention, an example is given below.

[0057] like Figure 1 As shown, the turning angle of the steering wheel 1 is transmitted to the rotating shaft 21 in the transition mounting seat 2 through the steering column and the transmission shaft 3. Figure 2 and Figure 3As shown, the worm (output shaft 41) of the steering motor 4 meshes with the worm gear 22 on the outer periphery of the transmission shaft 3 to form a worm gear structure. The steering motor 4 can output torque to rotate the worm, and the rotation of the rotating shaft 21 in the transition mounting seat 2 is affected by the worm gear structure. The rotating shaft 21 in the transition mounting seat 2 is connected to the steering gear 6 to transmit the torque output by the steering wheel 1 or the steering motor 4 to the hydraulic steering system of the axle 5 to realize the rotation of the wheel.

[0058] When the axle 5 is used as the tail end, after the driver at the head end ignites the engine, the controller in the driver's cab issues a command to close the switch between the battery and the steering motor 4, and the battery supplies power to the two steering motors 4 at the tail end. Then, the controller can calculate based on the multi-axis coordinated steering algorithm and the steering conditions of the wheels of other axles, and output control instructions to the steering motor 4 at the tail end. The steering motor 4 outputs torque according to the control instruction, and rotates the shaft 21 in the transition mounting seat 2 through the worm gear structure, so that the wheel rotates to the specified angle. At this time, the steering wheel 1 is unmanned, and the steering wheel 1, its steering column and the transmission shaft 3 are in a follow-up state.

[0059] In one embodiment, both ends of the axle 5 are respectively hinged to the connecting rod assembly 7, and the connecting rod assembly 7 is used to be hinged to the central axis of the wheel hub 9. Therefore, when the axle 5 rotates, the two wheel hubs 9 can be driven to rotate synchronously to realize the driving and steering operations of the vehicle.

[0060] In one embodiment, one side of the steering gear 6 is hinged to one end of the transition rod 8, and the other end of the transition rod 8 is hinged to the connecting rod assembly 7, so as to realize the connection between the steering gear 6 and the connecting rod assembly 7 through the transition rod 8, thereby ensuring that the torque of the steering gear 6 can be transmitted to the axle 5.

[0061] In addition to the above-mentioned dual-source drive steering device for trains, the present invention further provides a dual-source drive steering system including the dual-source drive steering device for trains disclosed in the above-mentioned embodiments, and the dual-source drive steering system includes: any of the above-mentioned dual-source drive steering devices for trains and a wheel hub 9, wherein the wheel hub 9 is arranged at both ends of the axle 5. The structures of other parts of the dual-source drive steering system are referred to the prior art, and will not be described in detail herein.

[0062] This patent is based on the traditional hydraulic power steering system, and introduces the electronic steering based on the multi-axis coordinated steering system into the steering control of the axle 5. The torque transmission of the steering wheel 1 and the torque transmission of the steering motor 4 share a set of steering actuators, and the arrangement of the steering motor 4 on the transition mounting seat 2 is compact and occupies a small space. The start and stop of the steering motor 4 is controlled by the ignition signal of the different end, and the logic is simple. When driving at the opposite end, it automatically switches to the mode where the steering is controlled by the rotating shaft 21 of the steering motor 4.

[0063] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referenced to each other. Any combination of all embodiments provided by the utility model is within the protection scope of this utility model and will not be described in detail here.

[0064] The dual-source drive steering system and the dual-source drive steering device for trains provided by the utility model are introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A dual-source driven steering device for a train, characterized in that: include: Steering wheel (1); A transition mounting seat (2) is provided with a rotating shaft (21) therein, and a worm gear (22) is provided on the outer periphery of the rotating shaft (21); a transmission shaft (3), which is arranged between the steering wheel (1) and the transition mounting seat (2), and the transmission shaft (3) is used to transmit the rotational motion and torque of the steering wheel (1) to the rotating shaft (21); A steering motor (4) is arranged on the side of the transition mounting seat (2), and an output shaft (41) of the steering motor (4) is meshed with the rotating shaft (21) to form a worm gear structure; An axle (5) for driving a wheel hub (9) of the vehicle to rotate; A steering gear (6) is arranged between the rotating shaft (21) and the axle (5), and the steering gear (6) is used to transmit the torque of the rotating shaft (21) to the axle (5).

2. The train dual-source drive steering device according to claim 1, characterized in that: A plurality of transmission shafts (3) are sequentially connected between the steering wheel (1) and the transition mounting seat (2), and a steering column is provided between two adjacent transmission shafts (3).

3. The train dual-source drive steering device according to claim 1, characterized in that: A steering motor (4) is provided on one side of the transition mounting seat (2); Or the steering motors (4) are respectively provided on both sides of the transition mounting seat (2).

4. The train dual-source drive steering device according to claim 1, characterized in that: The steering gear (6) comprises a recirculating ball steering gear (6) or a rack and pinion steering gear (6).

5. The train dual-source drive steering device according to any one of claims 1 to 4, characterized in that: It also includes a battery for supplying power to the steering motor (4).

6. The train dual-source drive steering device according to any one of claims 1 to 4, characterized in that: Both ends of the axle (5) are respectively hinged to a connecting rod assembly (7), and the connecting rod assembly (7) is used to be hinged to a central axis of the wheel hub (9).

7. The dual-source driven steering device for trains according to claim 6, characterized in that: One side of the steering gear (6) is hinged to one end of a transition rod (8), and the other end of the transition rod (8) is hinged to the connecting rod assembly (7).

8. A dual-source drive steering system, characterized in that: include: The train dual-source drive steering device and wheel hub (9) as described in any one of claims 1 to 7, wherein the wheel hub (9) is arranged at both ends of the axle (5).

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