Rail steering wheel mechanism

Abstract

The invention discloses a track steering wheel mechanism which comprises a track, a trolley body, motor modules and power wheel modules, the motor modules are arranged at the front end and the rear end of the trolley body, each power wheel module comprises a power wheel and a universal joint coupler, a first circular groove is formed in one side of each power wheel, and a second circular groove is formed in the other side of each power wheel. A second circular groove is formed in the bottom of the first circular groove, a crossed roller bearing is embedded in the first circular groove, a steering fixing frame is fixed to one side of the crossed roller bearing, and one end of the universal joint coupler is fixedly connected with a rotating shaft of the speed reducer. And the other end extends to the bottom of the circular groove II and is fixedly connected with the power wheel through a bolt. 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 has a good adaptation environment for the height requirement of equipment, and the height of the overall equipment can be visually reduced by changing the wheel diameter.

Description

Technical Field

[0001] The invention belongs to the technical field of rail vehicle steering, and in particular relates to a rail steering wheel mechanism. Background Art

[0002] Rail vehicles are increasingly used in public transportation, workshop transportation and other fields. The steering wheel structure is one of the components of rail vehicles, which has an important impact on the safety and stability of rail vehicle transportation. At present, the steering wheel structure usually adopts a double-track unpowered or single-track powered structure. The double-track unpowered steering mechanism has low cost and reliable steering, but the track cost is high. The single-track powered steering mechanism has a complex structure and high cost. The steering angle of the unpowered steering mechanism is not well matched with the track, which is not conducive to controlling the track width and reducing costs. At the same time, when the steering angle is not well matched, the vehicle's driving resistance increases significantly, the wheel slip increases, and the vehicle's operating efficiency and driving stability decrease.

[0003] At present, the rail trolleys on the market need to have a main wheel box, and the rotating pair used for rotating steering is a cylindrical rotating module set on the top of the main wheel box. The rotating module is large in size, resulting in a relatively high overall height of the trolley, making the rail trolley unsuitable for some scenes with height requirements. Therefore, it is urgent to design a rail steering wheel mechanism to solve the above problem. Summary of the invention

[0004] The object of the present invention is to provide a track steering wheel mechanism to solve the problems existing in the above-mentioned background technology.

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

[0006] track;

[0007] A trolley body, wherein the trolley body is arranged on one side of the track;

[0008] A motor module, the motor module is arranged at the front and rear ends of the trolley body, the motor module comprises a mounting box, a reducer and a servo motor arranged inside the mounting box, and a rotating frame arranged on one side of the mounting box;

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

[0010] Furthermore, convex plates are integrally designed on both sides of the top of the track.

[0011] Furthermore, guide rail mounting plates are fixed on both sides of the steering fixed frame, and the ends of the two guide rail mounting plates extend to the front and rear sides of the corresponding power wheels respectively. Two guide wheels are staggeredly fixed on the ends of the guide rail mounting plates, and the two guide wheels are located between the two convex plates.

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

[0013] Furthermore, the rotating frame, the steering fixed frame and the steering bearing are connected via a steering shaft, and two steering shafts are provided, and the central axes of the two steering shafts coincide with each other.

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

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

[0016] Furthermore, the central axes of the power wheel, the cross roller bearing, the steering fixed frame and the universal joint coupling extending to the bottom of the second circular groove coincide with each other.

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

[0018] The technical effects and advantages of the present invention are as follows: the track steering wheel mechanism has advanced design, compact structure and is easy to use. By hiding some parts of the steering mechanism such as the cross roller bearing and the universal joint coupling directly inside the power wheel, the overall structure becomes compact and occupies very little space. In addition, by designing the steering shaft on the side of the power wheel rather than on the top of the power wheel, the design has good adaptability to the height requirements of the equipment, and the height of the overall equipment can be intuitively reduced by changing the wheel diameter. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

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

[0021] Figure 3 Another angle structural detail diagram of the power wheel module of the present invention without the cross roller bearing;

[0022] Figure 4 It is a schematic structural diagram of a cross roller bearing of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the steering fixed frame of the present invention;

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

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

[0026] In the figure: 100, track; 101, convex plate; 200, trolley body; 300, motor module; 301, installation box; 302, reducer; 303, servo motor; 304, rotating frame; 400, power wheel module; 401, power wheel; 4011, circular groove 1; 4012, circular groove 2; 402, cross roller bearing; 403, steering fixed frame; 404, universal joint coupling; 405, steering bearing; 406, steering shaft; 407, guide rail mounting plate; 408, guide wheel; 409, rubber tire. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] 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 device or element 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.

[0029] 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 indirectly connected 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.

[0030] The present invention provides Figure 1-7 A track steering wheel mechanism as shown in , comprising:

[0031] Track 100;

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

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

[0034] The power wheel module 400 includes a power wheel 401 and a universal joint coupling 404. A circular groove 1 4011 is provided on one side of the power wheel 401, and a circular groove 2 4012 is provided at the bottom of the circular groove 1 4011. A cross roller bearing 402 is nested in the circular groove 1 4011. A steering fixed frame 403 is fixed on one side of the cross roller bearing 402. A steering bearing 405 is provided between the steering fixed frame 403 and the rotating frame 304, so that the steering fixed frame 403 and the rotating frame 304 can rotate relative to each other. One end of the universal joint coupling 404 is fixedly connected to the rotating shaft of the reducer 302, and the other end extends to the bottom of the circular groove 2 4012 and is fixedly connected to the power wheel 401 by bolts, so that the reducer 302 can drive the universal joint coupling 404 to rotate, and then drive the power wheel 401 to rotate through the universal joint coupling 404, thereby providing power for the operation of the trolley body 200.

[0035] In addition, convex plates 101 are integrally designed on both sides of the top of the track 100 to guide and limit the power wheel 401 so that the power wheel 401 can always run along the track 100.

[0036] Specifically, guide rail mounting plates 407 are fixed on both sides of the steering fixed frame 403, and the ends of the two guide rail mounting plates 407 extend to the front and rear sides of the corresponding power wheel 401 respectively. Two guide wheels 408 are staggeredly fixed at the ends of the guide rail mounting plates 407, and the two guide wheels 408 are both located between the two convex 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 convex plate 101 and the squeezing force is transmitted to the power wheel 401. Since a steering bearing 405 is provided between the rotating frame 304 and the steering fixed frame 403, the entire power wheel module 400 can be rotated 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 side of the installation box 301 facing the track 100 by bolts. The longitudinal section of the rotating frame 304 is a U-shaped structure rotated 90°, which is convenient for the rotating frame 304 to be connected to the power wheel module 400. A through hole with a diameter not less than the outer diameter of the rotating shaft of the reducer 302 is provided at the center of the rotating frame 304, which is convenient for the rotating shaft of the reducer 302 to pass through the rotating frame 304 and be connected to the universal joint coupling 404.

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

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

[0040] Specifically, the power wheel 401 is fixedly connected to the outer ring of the cross roller bearing 402 by bolts, ensuring that the power wheel 401 and the cross roller bearing 402 are firmly connected.

[0041] It cannot be ignored that the central axes of the power wheel 401, the cross roller bearing 402, the steering bracket 403 and the universal joint coupling 404 extending to the bottom of the second circular groove 4012 coincide with each other, ensuring that the power wheel 401 can run smoothly.

[0042] Specifically, a rubber tire 409 is sleeved and fixed on the outer surface of the power wheel 401, which helps to reduce the wear of the power wheel 401 and can also reduce the noise when the trolley body 200 is running.

[0043] Working principle: When the track steering wheel mechanism is used, the servo motor 303 is started first, and 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 power wheel 401 by bolts, the power wheel 401 can be driven to rotate through the universal joint coupling 404, and 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 power wheel module 400 can rotate around the steering shaft 406 as the axis, thereby realizing the steering function. The track steering wheel mechanism has an advanced design, compact structure and is easy to use. By hiding some parts of the steering mechanism such as the cross roller bearing 402 and the universal joint coupling 404 directly inside the power 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 power wheel 401 instead of the top of the power wheel 401, the design has good adaptability to the height requirements of the equipment, and the height of the overall equipment can be intuitively reduced by changing the wheel diameter.

[0044] Finally, it should be noted that the above 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 aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A track steering wheel mechanism, characterized in that: include: track(100); A trolley body (200), wherein the trolley body (200) is arranged on one side of the track (100); A motor module (300), the motor module (300) being arranged at the front and rear ends of the trolley body (200), the motor module (300) comprising an installation box (301), a reducer (302) and a servo motor (303) arranged inside the installation box (301), and a rotating frame (304) arranged at one side of the installation box (301); A power wheel module (400), the power wheel module (400) comprising a power wheel (401) and a universal joint coupling (404), one side of the power wheel (401) being provided with a circular groove 1 (4011), the bottom of the circular groove 1 (4011) being provided with a circular groove 2 (4012), a cross roller bearing (402) being nested in the circular groove 1 (4011), a steering fixed frame (403) being fixed on one side of the cross roller bearing (402), a steering bearing (405) being provided between the steering fixed frame (403) and a rotating frame (304), one end of the universal joint coupling (404) being fixedly connected to a rotating shaft of a reducer (302), and the other end extending to the bottom of the circular groove 2 (4012) and being fixedly connected to the power wheel (401) by bolts.

2. The track steering wheel mechanism according to claim 1, characterized in that: The top two sides of the track (100) are integrally designed with convex plates (101).

3. The track steering wheel mechanism according to claim 2, characterized in that: Guide rail mounting plates (407) are fixed on both sides of the steering fixed frame (403), and the ends of the two guide rail mounting plates (407) extend to the front and rear sides of the corresponding power wheels (401) respectively. Two guide wheels (408) are staggeredly fixed on the ends of the guide rail mounting plates (407), and the two guide wheels (408) are both located between the 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 side of the installation box (301) facing the track (100) by bolts, the longitudinal section of the rotating frame (304) is a U-shaped structure rotated 90 degrees, and a through hole with a diameter not less than the outer diameter of the rotating shaft of the reducer (302) is provided at the center of the rotating frame (304).

5. The track steering wheel mechanism according to claim 1, characterized in that: The rotating frame (304), the steering fixed frame (403) and the steering bearing (405) are connected via a steering shaft (406). Two steering shafts (406) are provided, and the central axes of the two steering shafts (406) coincide with each other.

6. The track steering wheel mechanism according to claim 1, characterized in that: The steering fixed frame (403) is a bowl-shaped structure with a through opening at the bottom, and one end of the steering fixed frame (403) is fixedly connected to the inner ring of the cross roller bearing (402) by means of bolts.

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

8. The track steering wheel mechanism according to claim 1, characterized in that: The central axes of the power wheel (401), the cross roller bearing (402), the steering fixed frame (403) and the universal joint coupling (404) extending to the bottom of the second circular groove (4012) coincide with each other.

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

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