Rail steering wheel mechanism

Abstract

The application discloses a track steering wheel mechanism, which comprises a track, a trolley main body, a motor module and a power wheel module, the motor module is arranged at the front and rear ends of the trolley main body, the power wheel module comprises a power wheel and a universal joint coupling, one side of the power wheel is provided with a circular groove one, the bottom of the circular groove one is provided with a circular groove two, a cross roller bearing is nested in the circular groove one, a steering fixed frame is fixed to one side of the cross roller bearing, one end of the universal joint coupling is fixedly connected with a rotating shaft of a speed reducer, and the other end extends to the bottom of the circular groove two and is fixedly connected with the power wheel through bolts. The track steering wheel mechanism is advanced in design and convenient to use, the overall structure becomes compact, the occupied space is very small, the design can well adapt to the height requirement of equipment, and the height of the overall equipment can be lowered by changing the wheel diameter.

Description

Technical Field

[0001] This invention belongs to the field of rail vehicle steering technology, and specifically relates to a rail steering wheel mechanism. Background Technology

[0002] Rail vehicles are increasingly widely used in public transportation, workshop transportation, and other fields. The steering wheel structure is an integral part of rail vehicles and has a significant impact on the safety and stability of rail vehicle transportation. Currently, steering wheel structures typically employ either a double-rail unpowered or a single-rail powered structure. The double-rail unpowered steering mechanism is low-cost and reliable, but the track cost is high. The single-rail powered steering mechanism is complex and expensive. Furthermore, the unpowered steering mechanism has poor matching between the steering angle and the track, which is not conducive to controlling the track width to reduce costs. At the same time, insufficient steering angle matching significantly increases vehicle running resistance, increases wheel slippage, and reduces vehicle operating efficiency and driving stability.

[0003] Currently, commercially available track-mounted trolleys require a main wheel box, with the rotary joint for rotation and steering being a cylindrical rotating module located on top of the main wheel box. This rotating module is relatively large, resulting in a high overall height for the trolley, making it unsuitable for scenarios with height requirements. Therefore, there is an urgent need to design a track steering wheel mechanism to solve these problems. Summary of the Invention

[0004] The purpose of this invention is to provide a track steering wheel mechanism to solve the problems existing in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a track steering wheel mechanism, comprising:

[0006] track;

[0007] The main body of the trolley is set on one side of the track;

[0008] The motor module is located at the front and rear ends of the main body of the vehicle. The motor module includes a mounting box, a reducer and a servo motor located inside the mounting box, and a rotating frame located on one side of the mounting box.

[0009] The power wheel module includes a power wheel and a universal joint coupling. A circular groove 1 is provided on one side of the power wheel, and a circular groove 2 is provided at the bottom of the circular groove 1. A cross roller bearing is nested in the circular groove 1. A steering bracket is fixed to one side of the cross roller bearing. A steering bearing is provided between the steering bracket and the rotating bracket. One end of the universal joint coupling is fixedly connected to the shaft of the reducer, and the other end extends to the bottom of the circular groove 2 and is fixedly connected to the power wheel by bolts.

[0010] Furthermore, the top two sides of the track are integrally designed with raised plates.

[0011] Furthermore, guide rail mounting plates are fixed on both sides of the steering bracket, and the ends of the two guide rail mounting plates extend to the front and rear sides of their corresponding power wheels. Two guide wheels are fixed to the ends of the guide rail mounting plates in an alternating manner, and both guide wheels are located between two convex plates.

[0012] Furthermore, the rotating frame is fixed to the mounting box on the side facing the track by bolts. The longitudinal section of the rotating frame is a U-shaped structure with a rotation of °. The center of the rotating frame is provided with a through hole with a diameter not less than the outer diameter of the reducer shaft.

[0013] Furthermore, the rotating frame, the steering fixing frame, and the steering bearing are connected by a steering shaft, and there are two steering shafts in total, with the central axes of the two steering shafts coinciding.

[0014] Furthermore, the steering bracket is a bowl-shaped structure with an opening at the bottom, and one end of the steering bracket is fixedly connected to the inner ring of the crossed roller bearing by bolts.

[0015] Furthermore, the drive wheel is fixedly connected to the outer ring of the crossed roller bearing by bolts.

[0016] Furthermore, the central axes of the drive wheel, the crossed roller bearing, the steering bracket, and the universal joint coupling extending to the bottom of the circular groove are aligned.

[0017] Furthermore, a rubber tire is fitted and fixed to the outer surface of the power wheel.

[0018] The technical effects and advantages of this invention are as follows: The track steering wheel mechanism is advanced in design, compact in structure, and easy to use. By directly concealing some parts of the steering mechanism, such as the crossed roller bearing and universal joint coupling, inside the drive wheel, the overall structure becomes compact and occupies very little space. In addition, by designing the steering shaft on the side of the drive wheel rather than on the top of the drive wheel, this design is well adaptable to the height requirements of the equipment. The overall height of the equipment can be reduced intuitively by changing the wheel diameter. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a detailed structural drawing of the power wheel module of the present invention;

[0021] Figure 3 This is a detailed structural view of the power wheel module of the present invention without crossed roller bearings from another angle;

[0022] Figure 4 This is a schematic diagram of the structure of the crossed roller bearing of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the steering fixing frame of the present invention;

[0024] Figure 6 This is a schematic diagram of the universal joint coupling of the present invention;

[0025] Figure 7 This is a schematic diagram of the power wheel of the present invention.

[0026] In the diagram: 100, track; 101, convex plate; 200, trolley body; 300, motor module; 301, mounting box; 302, reducer; 303, servo motor; 304, rotating frame; 400, power wheel module; 401, power wheel; 4011, circular groove one; 4012, circular groove two; 402, crossed roller bearing; 403, steering fixing frame; 404, universal joint coupling; 405, steering bearing; 406, steering shaft; 407, guide rail mounting plate; 408, guide wheel; 409, rubber tire. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] This invention provides, for example Figure 1-7 The track steering wheel mechanism shown includes:

[0031] Track 100;

[0032] The trolley body 200 is set on one side of the track 100;

[0033] The motor module 300 is located at the front and rear ends of the trolley body 200. The motor module 300 includes a mounting box 301, a reducer 302 and a servo motor 303 located inside the mounting box 301, and a rotating frame 304 located on one side of the mounting box 301. The reducer 302 and the servo motor 303 are connected by a drive. The reducer 302 plays the role of reducing speed and increasing output torque, which can better transmit the power of the servo motor 303 to the drive wheel 401.

[0034] The power wheel module 400 includes a power wheel 401 and a universal joint coupling 404. A circular groove 4011 is provided on one side of the power wheel 401, and a circular groove 4012 is provided at the bottom of the circular groove 4011. A crossed roller bearing 402 is nested within the circular groove 4011. A steering bracket 403 is fixed to one side of the crossed roller bearing 402. A steering bearing 405 is provided between the steering bracket 403 and the rotating bracket 304, allowing relative rotation between them. One end of the universal joint coupling 404 is fixedly connected to the shaft of the reducer 302, and the other end extends to the bottom of the circular groove 4012 and is fixedly connected to the power wheel 401 with bolts. This allows the reducer 302 to drive the universal joint coupling 404 to rotate, thereby driving the power wheel 401 to rotate and providing power for the operation of the trolley body 200.

[0035] In addition, the top of the track 100 has two integrally designed protruding plates 101, which can guide and limit the drive wheel 401, so that the drive wheel 401 can always run along the track 100.

[0036] Specifically, guide rail mounting plates 407 are fixed on both sides of the steering mounting bracket 403. The ends of the two guide rail mounting plates 407 extend to the front and rear sides of their corresponding power wheels 401. Two guide wheels 408 are fixed to the ends of the guide rail mounting plates 407 in an alternating manner. Both guide wheels 408 are located between two protruding plates 101. When the power wheel 401 travels to the turning point of the track 100, the guide wheel 408 on one side is squeezed by the protruding plate 101 and transmits the squeezing force to the power wheel 401. Since a steering bearing 405 is provided between the rotating bracket 304 and the steering mounting bracket 403, the entire power wheel module 400 can rotate around the steering shaft 406 as the axis, thereby realizing the steering function.

[0037] It is worth mentioning that the rotating frame 304 is fixed to the mounting box 301 on the side facing the track 100 by bolts. The longitudinal section of the rotating frame 304 is a U-shaped structure with a 90° rotation, which facilitates the connection between the rotating frame 304 and the power wheel module 400. The center of the rotating frame 304 is provided with a through hole with a diameter not less than the outer diameter of the shaft of the reducer 302, which facilitates the shaft of the reducer 302 to pass through the rotating frame 304 and connect to the universal joint coupling 404.

[0038] Specifically, the rotating frame 304, the steering fixing frame 403 and the steering bearing 405 are connected by a steering shaft 406. There are two steering shafts 406, and the central axis of the two steering shafts 406 coincides with the central axis of the steering fixing frame 403, so as to ensure that the entire power wheel module 400 is more stable when rotating around the steering shaft 406.

[0039] It should be noted that the steering bracket 403 is a bowl-shaped structure with an opening at the bottom. One end of the steering bracket 403 is fixedly connected to the inner ring of the crossed roller bearing 402 by bolts, so that when the universal joint coupling 404 drives the drive wheel 401 to rotate, the steering bracket 403 will not rotate axially together, thus facilitating the connection of the steering bracket 403 and the rotating frame 304.

[0040] Specifically, the drive wheel 401 is fixedly connected to the outer ring of the crossed roller bearing 402 by bolts, ensuring a stable connection between the drive wheel 401 and the crossed roller bearing 402.

[0041] It is important to note that the central axes of the drive wheel 401, the crossed roller bearing 402, the steering bracket 403, and the universal joint coupling 404 extending to the bottom of the circular groove 4012 are aligned, ensuring that the drive wheel 401 can operate smoothly.

[0042] Specifically, a rubber tire 409 is fitted and fixed to the outer surface of the drive wheel 401, which helps to reduce the wear of the drive wheel 401 and at the same time makes the noise of the car body 200 lower when running.

[0043] Working principle: When using this track steering wheel mechanism, the servo motor 303 is started first. The servo motor 303 transmits power to the universal joint coupling 404 through the reducer 302. Since one end of the universal joint coupling 404 is fixedly connected to the drive wheel 401 by bolts, the drive wheel 401 can be driven to rotate through the universal joint coupling 404. The rotating frame 304 is connected to the steering fixed frame 403 through the steering bearing 405 and the steering shaft 406, so that the entire drive wheel module 400 can rotate around the steering shaft 406 as the axis, realizing the steering function. The track steering wheel mechanism is advanced in design, compact in structure, and easy to use. By directly concealing some parts of the steering mechanism, such as the crossed roller bearing 402 and the universal joint coupling 404, inside the drive wheel 401, the overall structure becomes compact and occupies very little space. In addition, by designing the steering shaft 406 on the side of the drive wheel 401 rather than on top of the drive wheel 401, this design is well adaptable to the height requirements of the equipment. The overall height of the equipment can be reduced intuitively by changing the wheel diameter.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A track steering wheel mechanism, characterized in that, include: Track (100); The trolley body (200) is disposed on one side of the track (100); The motor module (300) is disposed at the front and rear ends of the trolley body (200). The motor module (300) includes a mounting box (301), a reducer (302) and a servo motor (303) disposed inside the mounting box (301), and a rotating frame (304) disposed on one side of the mounting box (301). A power wheel module (400) includes a power wheel (401) and a universal joint coupling (404). A circular groove (4011) is provided on one side of the power wheel (401), and a circular groove (4012) is provided at the bottom of the circular groove (4011). A cross roller bearing (402) is nested in the circular groove (4011). A steering bracket (403) is fixed on one side of the cross roller bearing (402). A steering bearing (405) is provided between the steering bracket (403) and the rotating bracket (304). One end of the universal joint coupling (404) is fixedly connected to the shaft of the reducer (302), and the other end extends to the bottom of the circular groove (4012) and is fixedly connected to the power wheel (401) by bolts.

2. The track steering wheel mechanism according to claim 1, characterized in that: The top of the track (100) has integrally designed protruding plates (101) on both sides.

3. The track steering wheel mechanism according to claim 2, characterized in that: The steering bracket (403) has guide rail mounting plates (407) fixed on both sides respectively. The ends of the two guide rail mounting plates (407) extend to the front and rear sides of their corresponding power wheels (401). The ends of the guide rail mounting plates (407) are staggered with two guide wheels (408), and the two guide wheels (408) are located between two convex plates (101).

4. The track steering wheel mechanism according to claim 1, characterized in that: The rotating frame (304) is fixed to the mounting box (301) on the side facing the track (100) by bolts. The longitudinal section of the rotating frame (304) is a U-shaped structure with a 90° rotation. The center of the rotating frame (304) is provided with a through hole with a diameter not less than the outer diameter of the shaft of the reducer (302).

5. The track steering wheel mechanism according to claim 1, characterized in that: The rotating frame (304), the steering fixing frame (403) and the steering bearing (405) are connected by a steering shaft (406). There are two steering shafts (406), and the central axes of the two steering shafts (406) coincide.

6. The track steering wheel mechanism according to claim 1, characterized in that: The steering bracket (403) is a bowl-shaped structure with an opening at the bottom. One end of the steering bracket (403) is fixedly connected to the inner ring of the crossed roller bearing (402) by bolts.

7. The track steering wheel mechanism according to claim 1, characterized in that: The drive wheel (401) is fixedly connected to the outer ring of the crossed roller bearing (402) by bolts.

8. The track steering wheel mechanism according to claim 1, characterized in that: The central axes of the drive wheel (401), the crossed roller bearing (402), the steering bracket (403), and the universal joint coupling (404) extending to the bottom of the circular groove II (4012) coincide.

9. The track steering wheel mechanism according to claim 1, characterized in that: A rubber tire (409) is fitted and fixed to the outer surface of the power wheel (401).

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