Steering wheel transmission mechanism and heavy-duty flatcar

Abstract

This disclosure provides a steering wheel transmission mechanism and a heavy-duty flatcar. The steering wheel transmission mechanism includes a support base, a steering wheel assembly, a driven steering wheel, a transmission wheel set, and a steering drive assembly. The steering wheel assembly is mounted on the support base and rotatably connected to the support base. The driven steering wheel is mounted on the steering wheel assembly and has the same axis of rotation as the steering wheel assembly. The steering drive assembly is mounted on the support base and located on the outer periphery of the steering wheel assembly. The transmission wheel set is rotatably mounted on the support base and is respectively connected to the power output ends of the driven steering wheel and the steering drive assembly, so that the steering wheel assembly can rotate relative to the support base with the driven steering wheel about the axis of rotation. Since the steering drive assembly is mounted on the support base, it will not move with the steering wheel assembly, thereby reducing the wear or loosening of the power supply pipes or lines connected to the steering drive assembly.

Description

Technical Field

[0001] This disclosure relates to the technical field of heavy-duty handling equipment, and in particular to a steering wheel transmission mechanism and a heavy-duty flatcar. Background Technology

[0002] With the rapid development of industries such as industrial manufacturing, logistics warehousing, and port transportation, heavy-duty handling equipment, such as heavy-duty AGVs and heavy-duty flatcars, has been widely used. Since the load of heavy-duty handling equipment is usually in the ton range or above, most manufacturers currently use a steering wheel drive device, such as the one provided in Chinese patent document CN108163045B, to achieve smooth steering by driving the steering wheel through the steering mechanism. However, due to the structural design of the heavy-duty hydraulic drive wheel, the steering component will shift around the steering wheel when the steering wheel is turning. At this time, the power supply pipes or lines connected to the steering component will be pulled along with it. Over time, the power supply pipes or lines connected to the steering component are prone to wear or loosening, ultimately leading to unstable steering power supply and increased failure rate of the heavy-duty handling equipment. Utility Model Content

[0003] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a steering wheel transmission mechanism and a heavy-duty flatcar that can stably turn and bend.

[0004] The purpose of this disclosure is achieved through the following technical solution:

[0005] A steering wheel transmission mechanism, comprising:

[0006] A support base for mounting on the bottom of a transport vehicle frame;

[0007] A steering wheel assembly, which is mounted on the support base; the steering wheel assembly is used to carry and transport the support base;

[0008] The steering wheel transmission mechanism also includes a steering driven wheel, a transmission wheel set, and a steering drive assembly;

[0009] The steering wheel assembly is rotatably connected to the support base; the driven steering wheel is mounted on the steering wheel assembly and has the same axis of rotation as the steering wheel assembly; the steering drive assembly is mounted on the support base and is located on the outer periphery of the steering wheel assembly; the transmission wheel set is rotatably mounted on the support base, and the transmission wheel set is respectively connected to the power output end of the driven steering wheel and the steering drive assembly, so that the steering drive assembly drives the steering wheel assembly to rotate axially according to the axis of rotation.

[0010] In some embodiments, the transmission wheel assembly has a driving transmission wheel section and a driven transmission wheel section coaxially arranged. The driving transmission wheel section is driven to the power output end of the steering drive assembly, and the driven transmission wheel section is driven to the rudder driven wheel.

[0011] In some embodiments, the active drive wheel is gear-driven connected to the power output end of the steering drive assembly; or,

[0012] The active drive wheel is belt-driven connected to the power output end of the steering drive assembly; or...

[0013] The active drive wheel is connected to the power output end of the steering drive assembly via a chain drive.

[0014] In some embodiments, the driven drive wheel is geared to the rudder driven wheel; or...

[0015] The driven drive wheel is connected to the driven rudder wheel via a belt drive; or...

[0016] The driven drive wheel is connected to the rudder driven wheel via a chain drive.

[0017] In some embodiments, the transmission wheel assembly further includes a rotating shaft portion coaxially arranged with the drive transmission wheel portion; the rotating shaft portion is embedded in the mounting hole of the support base and rotatably connected to the inner wall of the mounting hole.

[0018] In some embodiments, the rotating shaft is located between the driving drive wheel and the driven drive wheel, and the rotating shaft is connected to the inner wall of the mounting hole via a bearing.

[0019] In some embodiments, the transmission wheel assembly includes a driving gear, a driven gear, and a rotating central shaft; the rotating central shaft passes through the support base and is rotatably connected to the support base; the driven gear is fixed to the first end of the rotating central shaft and meshes with the teeth on the outer periphery of the steering wheel driven wheel; the driving gear is fixed to the second end of the rotating central shaft and meshes with the drive gear of the steering drive assembly.

[0020] In some embodiments, the steering drive assembly includes a rotary driver and a drive gear; the rotary driver is fixedly mounted on the support base, and the drive gear is fixedly mounted on the power output shaft of the rotary driver.

[0021] In some embodiments, the steering wheel assembly includes a steering bracket, a hydraulic actuator, and a heavy-duty wheel; the steering bracket is rotatably connected to the bottom of the support base, and the steering driven wheel is fixed to the support base; the hydraulic actuator is mounted on the steering bracket, and the heavy-duty wheel is fixedly mounted on the power output shaft of the hydraulic actuator.

[0022] A heavy-duty flatcar includes a transport frame and a steering wheel transmission mechanism according to any of the above embodiments; the support base is mounted on the bottom of the transport frame.

[0023] Compared with the prior art, this disclosure has at least the following advantages:

[0024] In the aforementioned steering transmission mechanism, the steering drive assembly mounted on the support base is located on the outer periphery of the steering wheel assembly. By rotatably connecting the transmission wheel set, also mounted on the support base, to the power output ends of the steering driven wheel and the steering drive assembly, the steering drive assembly drives the transmission wheel set to rotate, which in turn drives the steering driven wheel to rotate. Simultaneously, since the steering wheel assembly rotatably connected to the support base and the steering driven wheel mounted on it share the same axis of rotation, the steering wheel assembly can rotate relative to the support base about its axis of rotation, following the steering driven wheel. The steering drive assembly, being mounted on the support base, does not shift with the steering wheel assembly, thus reducing wear or loosening of the power supply lines or conduits connected to the steering drive assembly, ultimately improving the steering power supply stability of the aforementioned steering transmission mechanism. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a steering wheel transmission mechanism according to an embodiment of the present disclosure;

[0027] Figure 2 for Figure 1 A cross-sectional view of the steering wheel transmission mechanism shown;

[0028] Figure 3 for Figure 2 The enlarged view shown at point A in the middle;

[0029] Figure 4 for Figure 1 An exploded view of the steering wheel transmission mechanism shown.

[0030] Figure 5 This is a schematic diagram of the structure of a heavy-duty flatcar according to another embodiment of the present disclosure.

[0031] Figure label:

[0032] 100. Steering wheel transmission mechanism; 200. Carrier frame; 210. Lifting guide component;

[0033] 110. Support base; 1101. Mounting pivot hole; 1102. Guide groove; 1110. Bearing; 1120. Assembly ring;

[0034] 120. Steering wheel assembly; 1210. Steering bracket; 1220. Hydraulic actuator; 1230. Heavy-duty wheel;

[0035] 130. Steering wheel driven wheel;

[0036] 140. Transmission wheel assembly; 1410. Driving transmission wheel section; 1420. Driven transmission wheel section; 1430. Rotating shaft section;

[0037] 150. Steering drive assembly; 1510. Rotary drive; 1520. Drive gear. Detailed Implementation

[0038] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0039] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0041] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments:

[0042] Please see Figure 1 and Figure 2 One embodiment of the steering wheel transmission mechanism 100 includes a support base 110, a steering wheel assembly 120, a steering driven wheel 130, a transmission wheel set 140, and a steering drive assembly 150. The support base 110 is used to be mounted on the bottom of the carrier frame 200. The steering wheel assembly 120 is mounted on the support base 110. The steering wheel assembly 120 is used to carry and transport the support base 110. The steering wheel assembly 120 is rotatably connected to the support base 110. The steering driven wheel 130 is mounted on the steering wheel assembly 120 and has the same rotation axis O as the steering wheel assembly 120. The steering drive assembly 150 is mounted on the support base 110 and is located in the outer peripheral direction of the steering wheel assembly 120. The transmission wheel set 140 is rotatably mounted on the support base 110 and is respectively connected to the power output end of the steering driven wheel 130 and the steering drive assembly 150, so that the steering drive assembly 150 drives the steering wheel assembly 120 to rotate axially according to the rotation axis O.

[0043] It is understood that since the steering drive assembly 150 mounted on the support base 110 is located on the outer periphery of the steering wheel assembly 120, the transmission wheel set 140 rotatably mounted on the support base 110 is connected to the power output end of the steering wheel driven wheel 130 and the steering drive assembly 150 respectively, so that the steering drive assembly 150 can drive the transmission wheel set 140 to rotate, and the transmission wheel set 140 in turn drives the steering wheel driven wheel 130 to rotate. Meanwhile, since the steering wheel assembly 120, which is rotatably connected to the support base 110, and the steering driven wheel 130 mounted on the steering wheel assembly 120 have the same axis of rotation O, the steering wheel assembly 120 can rotate relative to the support base 110 with the steering driven wheel 130 about the axis of rotation O. The steering drive assembly 150, which is mounted on the support base 110, will not move with the steering wheel assembly 120, thereby reducing the wear or loosening of the power supply pipes or lines connected to the steering drive assembly 150, and ultimately improving the steering power supply stability of the steering transmission mechanism 100.

[0044] Please see Figure 2 and Figure 3In some embodiments, the transmission wheel assembly 140 has a coaxially arranged active transmission wheel 1410 and driven transmission wheel 1420. Specifically, the active transmission wheel 1410 and the driven transmission wheel 1420 rotate coaxially. The active transmission wheel 1410 is driven to the power output end of the steering drive assembly 150, and the driven transmission wheel 1420 is driven to the rudder driven wheel 130. It is understood that, since the drive wheel assembly 140 has a coaxially arranged active drive wheel 1410 and driven drive wheel 1420, by connecting the power output end of the steering drive assembly 150 to the active drive wheel 1410, the steering drive assembly 150 can drive the drive wheel assembly 140 to rotate through the active drive wheel 1410. Simultaneously, the driven drive wheel 1420 is connected to the rudder driven wheel 130, so that the driven drive wheel 1420 can rotate with the drive wheel assembly 140 and drive the rudder driven wheel 130. Finally, the rudder wheel assembly 120 rotates smoothly relative to the support base 110 with the rudder driven wheel 130 about the rotation axis O.

[0045] The active drive wheel 1410 can be connected to the power output end of the steering drive assembly 150 in at least the following ways:

[0046] Please see Figure 2 and Figure 3 In this embodiment, the active drive wheel 1410 is connected to the power output end of the steering drive assembly 150 via gear transmission. It can be understood that stable transmission is achieved by engaging the teeth of the active drive wheel 1410 with the drive gear 1520 of the steering drive assembly 150.

[0047] In one embodiment, the active drive pulley 1410 is belt-driven connected to the power output end of the steering drive assembly 150. It can be understood that the active drive pulley 1410 is a pulley structure, and by means of a drive belt fitted around the outer periphery of the active drive pulley 1410 and the outer periphery of the drive pulley of the steering drive assembly 150, stable transmission between the active drive pulley 1410 and the drive wheel of the steering drive assembly 150 can be achieved.

[0048] In another embodiment, the active drive wheel 1410 is connected to the power output end of the steering drive assembly 150 via a chain drive. It can be understood that the active drive wheel 1410 is a sprocket structure, and by having a drive chain fitted around the outer periphery of the active drive wheel 1410 and the outer periphery of the drive sprocket of the steering drive assembly 150, stable transmission between the active drive wheel 1410 and the drive sprocket of the steering drive assembly 150 can be achieved.

[0049] The driven drive wheel 1420 can be connected to the rudder driven wheel 130 in at least the following ways:

[0050] Please see Figure 2 and Figure 3 In this embodiment, the driven transmission wheel 1420 is connected to the rudder driven wheel 130 by gear transmission. It can be understood that stable transmission is achieved by meshing the teeth of the driven transmission wheel 1420 with the teeth of the rudder driven wheel 130.

[0051] In one embodiment, the driven drive pulley 1420 is connected to the rudder driven pulley 130 by a belt drive. It is understood that both the driven drive pulley 1420 and the rudder driven pulley 130 are pulley structures. By having a drive belt fitted around the outer periphery of the driven drive pulley 1420 and the rudder driven pulley 130, stable transmission between the driven drive pulley 1420 and the rudder driven pulley 130 can be achieved.

[0052] In another embodiment, the driven drive wheel 1420 is connected to the rudder driven wheel 130 by a chain drive. It can be understood that both the driven drive wheel 1420 and the rudder driven wheel 130 are sprocket structures. By having a drive chain fitted around the outer periphery of the driven drive wheel 1420 and the rudder driven wheel 130, stable transmission between them can be achieved.

[0053] Please see Figure 3 In some embodiments, the transmission wheel assembly 140 further includes a rotating shaft portion 1430, which is coaxially arranged with the driving transmission wheel portion 1410. Specifically, the rotating shaft portion 1430 and the driving transmission wheel portion 1410 rotate coaxially. The rotating shaft portion 1430 is embedded in the mounting hole 1101 of the support base 110 and rotatably connected to the inner wall of the mounting hole 1101. It can be understood that since the rotating shaft portion 1430 and the driving transmission wheel portion 1410 are coaxially arranged, the rotating shaft portion 1430 and the driven transmission wheel portion 1420 are also coaxially arranged. By embedding the rotating shaft portion 1430 in the mounting hole 1101 of the support base 110, the transmission wheel assembly 140 can be securely mounted on the support base 110, and the driven transmission wheel portion 1420, the rotating shaft portion 1430, and the driven transmission wheel portion 1420 can maintain coaxial rotation.

[0054] Please see Figure 2 and Figure 3In this embodiment, the rotating shaft portion 1430 is located between the driving transmission wheel portion 1410 and the driven transmission wheel portion 1420, and the rotating shaft portion 1430 is connected to the inner wall of the mounting hole 1101 via a bearing 1110. It can be understood that, since the rotating shaft portion 1430 is located between the driving transmission wheel portion 1410 and the driven transmission wheel portion 1420, when the driving transmission wheel portion 1410 and the driven transmission wheel portion 1420 are subjected to force, the rotating shaft portion 1430 can balance the force on the transmission wheel assembly 140. Simultaneously, the bearing 1110 connects the rotating shaft portion 1430 to the inner wall of the mounting hole 1101, thereby maintaining smooth rotation between the transmission wheel assembly 140 and the support base 110. Specifically, the rotating shaft portion 1430 is rotatably connected to the inner wall of the mounting hole 1101 via the bearing 1110. The inner ring of the bearing 1110 is fixedly sleeved on the rotating shaft portion 1430, and the outer ring of the bearing 1110 is fixedly connected to the inner wall of the mounting hole 1101.

[0055] Please see Figure 2 and Figure 3 In some embodiments, the transmission wheel assembly 140 includes a drive gear, a driven gear, and a rotating central shaft; the rotating central shaft passes through and is rotatably connected to the support base 110; the driven gear is fixed to the first end of the rotating central shaft and meshes with the teeth on the outer periphery of the rudder driven wheel 130; the drive gear is fixed to the second end of the rotating central shaft and meshes with the drive gear 1520 of the steering drive assembly 150. It can be understood that by having the driven gear fixed to the first end of the rotating central shaft mesh with the teeth on the outer periphery of the rudder driven wheel 130, and the drive gear fixed to the second end of the rotating central shaft mesh with the drive gear 1520 of the steering drive assembly 150, the steering drive assembly 150 can drive the transmission wheel assembly 140 to rotate the rudder driven wheel 130 axially, ultimately causing the rudder wheel assembly 120 to smoothly turn relative to the support base 110 with the rudder driven wheel 130 about the rotation axis O.

[0056] Please see Figure 2 In this embodiment, the transmission wheel assembly 140 is located between the rudder driven wheel 130 and the steering drive assembly 150. The diameter of the driving gear is larger than that of the driven gear, which reduces the outer diameter of the rudder driven wheel 130 and increases the overall speed ratio. The transmission ratio between the driving gear and the driven gear is 2:1.

[0057] Please see Figure 3In some embodiments, the steering drive assembly 150 includes a rotary driver 1510 and a drive gear 1520; the rotary driver 1510 is fixedly mounted on the support base 110, and the drive gear 1520 is fixedly mounted on the power output shaft of the rotary driver 1510. It is understood that by fixing the drive gear 1520 to the power output shaft of the rotary driver 1510 on the support base 110, the rotary driver 1510 can drive the drive gear 1520 to rotate. The drive gear 1520 meshes with the drive gear of the transmission gear set 140, and the driven gear of the transmission gear set 140 drives the rudder driven wheel 130 to rotate axially.

[0058] Please see Figure 3 and Figure 4 In some embodiments, the steering wheel assembly 120 includes a steering bracket 1210, a hydraulic actuator 1220, and a heavy-duty wheel 1230. The steering bracket 1210 is rotatably connected to the bottom of the support base 110, and the steering driven wheel 130 is fixedly mounted on the support base 110. The hydraulic actuator 1220 is mounted on the steering bracket 1210, and the heavy-duty wheel 1230 is fixedly mounted on the power output shaft of the hydraulic actuator 1220. It is understood that because the hydraulic actuator 1220 is mounted on the steering bracket 1210 and the heavy-duty wheel 1230 is fixedly mounted on the power output shaft of the hydraulic actuator 1220, the heavy-duty wheel 1230 can be driven to rotate by the hydraulic actuator 1220, so that the heavy-duty wheel 1230 can carry and transport goods on the support base 110 via the steering bracket 1210. Meanwhile, the steering bracket 1210 is rotatably connected to the bottom of the support base 110, and the rudder driven wheel 130 is fixed on the support base 110, so that the rudder driven wheel 130 and the steering bracket 1210 can rotate synchronously about the rotation axis O, thereby realizing the smooth steering of the steering wheel assembly 120 relative to the support base 110. The bottom of the support base 110 is fixedly provided with an assembly ring 1120, and the rudder driven wheel 130 is slidably sleeved on the outside of the assembly ring 1120.

[0059] Please see Figures 1 to 5This disclosure also provides a heavy-duty flatcar, including a transport frame 200 and a steering wheel transmission mechanism 100 of any of the above embodiments; a support base 110 is mounted on the bottom of the transport frame 200. It can be understood that by applying the steering wheel transmission mechanism 100 of this disclosure to a heavy-duty flatcar, since the steering drive assembly 150 mounted on the support base 110 is located on the outer periphery of the steering wheel assembly 120, by rotatably connecting the transmission wheel set 140 mounted on the support base 110 to the steering wheel driven wheel 130 and the power output end of the steering drive assembly 150 respectively, the steering drive assembly 150 can drive the transmission wheel set 140 to rotate, and the transmission wheel set 140 in turn drives the steering wheel driven wheel 130 to rotate. Meanwhile, since the steering wheel assembly 120, which is rotatably connected to the support base 110, and the rudder driven wheel 130 mounted on the steering wheel assembly 120 have the same axis of rotation O, the steering wheel assembly 120 can rotate relative to the support base 110 with the rudder driven wheel 130 about the axis of rotation O. The steering drive assembly 150, because it is mounted on the support base 110, will not shift with the steering wheel assembly 120, thereby reducing wear or loosening of the power supply pipes or lines connected to the steering drive assembly 150, ultimately improving the steering power supply stability of the steering transmission mechanism 100. A lifting guide 210 is mounted on the carrier frame 200, and the lifting guide 210 is slidably disposed within the guide groove 1102 on the support base 110.

[0060] Compared with the prior art, this disclosure has at least the following advantages:

[0061] The aforementioned steering transmission mechanism 100, since the steering drive assembly 150 mounted on the support base 110 is located on the outer periphery of the steering wheel assembly 120, allows the transmission wheel set 140, which is rotatably mounted on the support base 110, to be connected to the power output end of the steering driven wheel 130 and the steering drive assembly 150 respectively. This enables the steering drive assembly 150 to drive the transmission wheel set 140 to rotate, and the transmission wheel set 140 in turn drives the steering driven wheel 130 to rotate. Meanwhile, since the steering wheel assembly 120, which is rotatably connected to the support base 110, and the steering driven wheel 130 mounted on the steering wheel assembly 120 have the same axis of rotation O, the steering wheel assembly 120 can rotate relative to the support base 110 with the steering driven wheel 130 about the axis of rotation O. The steering drive assembly 150, which is mounted on the support base 110, will not move with the steering wheel assembly 120, thereby reducing the wear or loosening of the power supply pipes or lines connected to the steering drive assembly 150, and ultimately improving the steering power supply stability of the steering transmission mechanism 100.

[0062] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A steering wheel transmission mechanism, comprising: A support base for mounting on the bottom of a transport vehicle frame; A steering wheel assembly, the steering wheel assembly being mounted on the support base; The steering wheel assembly is used to carry and transport the support base; The steering transmission mechanism is characterized in that it further includes a rudder driven wheel, a transmission wheel set, and a steering drive assembly; The steering wheel assembly is rotatably connected to the support base; the driven steering wheel is mounted on the steering wheel assembly and has the same axis of rotation as the steering wheel assembly; the steering drive assembly is mounted on the support base and is located on the outer periphery of the steering wheel assembly; the transmission wheel set is rotatably mounted on the support base, and the transmission wheel set is respectively connected to the power output end of the driven steering wheel and the steering drive assembly, so that the steering drive assembly drives the steering wheel assembly to rotate axially according to the axis of rotation.

2. A quadrant steering transmission mechanism according to claim 1, characterised in that, The transmission wheel assembly has a driving transmission wheel section and a driven transmission wheel section arranged coaxially. The driving transmission wheel section is driven to the power output end of the steering drive assembly, and the driven transmission wheel section is driven to the rudder driven wheel.

3. A quadrant steering transmission mechanism according to claim 2, characterised in that, The active drive wheel is connected to the power output end of the steering drive assembly via gear transmission; or... The active drive wheel is belt-driven connected to the power output end of the steering drive assembly; or... The active drive wheel is connected to the power output end of the steering drive assembly via a chain drive.

4. The tiller steering transmission of claim 2, wherein The driven transmission wheel is connected to the driven rudder wheel via a gear transmission; or... The driven drive wheel is connected to the driven rudder wheel via a belt drive; or... The driven drive wheel is connected to the rudder driven wheel via a chain drive.

5. The tiller steering transmission of claim 2, wherein, The transmission wheel assembly also has a rotating shaft portion, which is coaxially arranged with the active transmission wheel portion; the rotating shaft portion is embedded in the mounting hole of the support base and rotatably connected to the inner wall of the mounting hole.

6. A quadrant steering transmission mechanism according to claim 5, wherein The rotating shaft is located between the driving drive wheel and the driven drive wheel, and the rotating shaft is connected to the inner wall of the mounting hole via a bearing.

7. The tiller turning transmission mechanism according to claim 1, characterized in that The transmission wheel assembly includes a driving gear, a driven gear, and a rotating central shaft; the rotating central shaft passes through the support base and is rotatably connected to the support base; the driven gear is fixed at the first end of the rotating central shaft and meshes with the teeth on the outer circumference of the rudder driven wheel; The drive gear is fixed to the second end of the rotating central shaft and meshes with the drive gear of the steering drive assembly.

8. A quadrant steering transmission mechanism according to claim 7, characterised in that, The steering drive assembly includes a rotary driver and a drive gear; the rotary driver is fixedly mounted on the support base, and the drive gear is fixedly mounted on the power output shaft of the rotary driver.

9. The tiller steering transmission of claim 1, wherein, The steering wheel assembly includes a steering bracket, a hydraulic actuator, and a heavy-duty wheel; the steering bracket is rotatably connected to the bottom of the support base, and the steering driven wheel is fixed on the support base; the hydraulic actuator is mounted on the steering bracket, and the heavy-duty wheel is fixedly mounted on the power output shaft of the hydraulic actuator.

10. A heavy load flat car characterized by, The rudder wheel steering transmission mechanism as claimed in any one of claims 1 to 9 is included in a carrier frame, and the support base is mounted on the bottom of the carrier frame.

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