Driving mechanism for crawler walking chassis, crawler walking chassis and snow sweeper

Abstract

The utility model provides a driving mechanism for a crawler walking chassis, the crawler walking chassis and a snow sweeper, and the driving mechanism for the crawler walking chassis comprises a driving motor module fixed on a frame and provided with a rotating shaft; the crawler belt modules are fixed on the two sides of the frame; the force bearing module is fixed on the crawler belt module; and the driving wheel set is rotatably installed on the force bearing module, the driving wheel set is connected with the tail end of the rotating shaft, the driving wheel set synchronously rotates along with the rotating shaft, and a gap is reserved between the driving wheel set and the rotating shaft in the radial direction. Therefore, the motor shaft serving as a rotating shaft does not bear radial force, and the damage probability of the motor shaft and the design and strength requirements of the motor shaft are reduced to a certain extent.

Description

Technical Field

[0001] This application relates to the field of power tool technology, and more particularly to a drive mechanism for a tracked chassis, a tracked chassis, and a snowplow. Background Technology

[0002] In existing tracked chassis, the drive motor is mounted on the frame or body. The motor shaft of the drive motor is connected to an adapter flange, which in turn connects to the drive wheel to form the drive mechanism. Alternatively, the motor shaft of the drive motor is directly connected to the drive wheel, with the drive wheel and adapter flange forming a single unit to create the drive mechanism. The guide wheels, track rollers, and other components of the tracked chassis are fixed to the frame or body, and the tracks mesh with the drive wheel, guide wheels, and track rollers. After the tracks are installed and secured, the drive mechanism can propel the tracks.

[0003] In related technologies, tracks need to be tensioned during installation to ensure they have a certain preload and do not slip or misalign during movement. The track tension is directly proportional to the overall machine mass, such as... Figure 1 As shown, the track tension is directly borne by the motor shaft, which results in a significant radial force on the motor bearings. In the event of collisions, falls, or other abnormal situations, the impact force transmitted to the motor shaft is far greater than the track tension, causing even greater radial forces on the motor bearings. This increases the likelihood of motor shaft damage and necessitates higher strength requirements for the motor shaft. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a drive mechanism for a tracked chassis, a tracked chassis, and a snow sweeper, so as to solve the problems of easy damage and increased strength requirements of the motor shaft of the drive mechanism for the tracked chassis due to the radial force.

[0005] To achieve the above objectives, the first aspect of this application provides a drive mechanism for a tracked chassis, comprising: a drive motor module fixed to a frame, the drive motor module having a rotating shaft; a track module fixed to both sides of the frame; a load-bearing module fixed to the track module; and a drive wheel assembly rotatably mounted on the load-bearing module, the drive wheel assembly being connected to the end of the rotating shaft, the drive wheel assembly rotating synchronously with the rotating shaft, and a radial clearance between the drive wheel assembly and the rotating shaft.

[0006] Furthermore, the load-bearing module includes a load-bearing flange and a bearing. The outer ring of the bearing is connected to the load-bearing flange, and the inner ring of the bearing is connected to the drive wheel assembly. The inner ring of the bearing rotates with the drive wheel assembly, and the outer ring of the bearing and the inner ring of the bearing can rotate relative to each other.

[0007] Further, the track module comprises an inner track clamp, the load bearing module is fixed on the inner track clamp, and the inner track clamp is located between the load bearing module and the vehicle frame.

[0008] Further, the track module comprises an inner track clamp, an outer track clamp, a track, a guide wheel, a supporting wheel and a tensioning mechanism, the inner track clamp is arranged close to the vehicle frame, the outer track clamp is arranged away from the vehicle frame, the track is located between the inner track clamp and the outer track clamp, the load bearing module, the guide wheel and the supporting wheel are installed on the inner track clamp, the drive wheel set comprises a drive wheel, the drive wheel, the guide wheel and the supporting wheel are engaged with the track, and the tensioning mechanism is configured to move the position of the guide wheel.

[0009] Further, the track module is detachably connected with the vehicle frame.

[0010] Further, the drive motor module is installed in a warehouse body, and the warehouse body is installed on the vehicle frame.

[0011] Further, the drive motor module comprises a drive motor and a motor flange, and the drive motor is detachably connected with the warehouse body through the motor flange.

[0012] Further, the drive wheel set comprises a drive wheel and a drive adapter flange, the drive wheel is fixedly connected with the drive adapter flange, the drive adapter flange is in transmission connection with the rotating shaft, and the drive adapter flange is rotatably connected with the load bearing module.

[0013] The second aspect of the present application provides a track walking chassis comprising the drive mechanism for the track walking chassis according to the first aspect of the present application.

[0014] The third aspect of the present application provides a snow sweeper comprising the track walking chassis according to the second aspect of the present application.

[0015] In the drive mechanism for the track walking chassis, the track walking chassis and the snow sweeper provided in the embodiments of the present application, the drive mechanism comprises a drive motor module, a track module, a load bearing module and a drive wheel set, the drive motor module is fixed on the vehicle frame, the track module is fixed on both sides of the vehicle frame, the load bearing module is fixed on the track module and is configured to bear the radial force from the track; the drive wheel set is rotatably installed on the load bearing module, the drive wheel set is connected with the end of the rotating shaft of the drive motor module, the drive wheel set rotates synchronously with the rotating shaft, and a gap is left between the drive wheel set and the rotating shaft in the radial direction, so that the rotating shaft only transmits torque and does not bear radial force, the probability of damage of the motor shaft as the rotating shaft is reduced to a certain extent, the service life of the motor is prolonged, the design and strength requirements of the motor shaft are reduced, and the cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the application or the related art, the drawings needed to be used in the embodiments or the related art description will be briefly introduced. Obviously, the drawings in the following description only embody the embodiments of the application, and for those skilled in the art, other drawings can be obtained without creative effort based on these drawings.

[0017] Figure 1 It is a force schematic diagram of the motor shaft of the prior art;

[0018] Figure 2 It is a perspective view of the track walking chassis without the bin body of the embodiment of the application;

[0019] Figure 3 It is a perspective view of the track walking chassis with the bin body of the embodiment of the application;

[0020] Figure 4 It is a side view of Figure 3 ;

[0021] Figure 5 It is a top view of Figure 3 ;

[0022] Figure 6 It is a front view of Figure 3 ;

[0023] Figure 7 It is a partial exploded view of the track walking chassis of the embodiment of the application;

[0024] Figure 8 It is a sectional view of the track walking chassis with the bin body of the embodiment of the application;

[0025] Figure 9 It is a partial enlarged view of Figure 8 ;

[0026] Figure 10 It is another sectional view of the track walking chassis with the bin body of the embodiment of the application;

[0027] Figure 11 It is a partial enlarged view of Figure 10 ;

[0028] Figure 12 It is an overall exploded view of the track walking chassis of the embodiment of the application.

[0029] The following is the explanation of the reference signs of the drawings:

[0030] 100, track walking chassis;

[0031] 200, driving mechanism;

[0032] 211, rotating shaft; 212, driving motor; 213, motor flange;

[0033] 220, track module; 221, inner track clamping plate; 222, outer track clamping plate; 223, track; 224, guide wheel; 225, tension bolt; 226, guide wheel adapter flange; 227, guide wheel rotating shaft; 228, guide wheel bearing;

[0034] 231, force flange; 232, bearing;

[0035] 241, driving wheel; 242, driving adapter flange;

[0036] 300, vehicle frame;

[0037] 400, bin body; 410, upper bin body; 420, lower bin body;

[0038] 500, transmission flat square. DETAILED DESCRIPTION

[0039] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0040] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be understood as the common meanings understood by those with ordinary skills in the art to which the present application belongs. The terms "first", "second" and similar terms used in the embodiments of the present application do not represent any order, number or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar terms mean that the elements or objects before the terms cover the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right" and the like are only used to represent relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships may also change accordingly.

[0041] The driving mechanism for the track walking chassis, the track walking chassis and the snow blower provided by the embodiments of the present application can prevent the motor bearing from bearing radial force, and to some extent, reduce the probability of damage of the motor shaft and the design and strength requirements of the motor shaft.

[0042] Some embodiments of the present application provide a track walking chassis 100, such as Figure 2As shown, the tracked chassis 100 comprises a driving mechanism 200 and a frame 300 for the tracked chassis 100, and the driving mechanism 200 is mounted on the frame 300.

[0043] In some embodiments, as shown in Figures 3-6 As shown, the tracked chassis 100 further comprises a bin body 400, wherein the bin body 400 is mounted on the frame 300. As shown in Figure 3 and Figure 6 As shown in the embodiment, the bin body 400 can be divided into an upper bin body 410 and a lower bin body 420, and the opening of the upper bin body 410 is correspondingly buckled with the opening of the lower bin body 420 to form the bin body 400. In other embodiments, the bin body 400 can adopt other forms such as an integrally formed bin body, a bin body formed by buckling the lower bin body 420 with a cover plate, and the like, and the embodiment is not limited thereto.

[0044] Some embodiments of the present application provide a driving mechanism 200 for the tracked chassis 100, as shown in Figure 2 As shown, the driving mechanism 200 comprises a driving motor module, a track module 220, a force bearing module, and a driving wheel set. After the whole machine is assembled, the driving motor module is fixed on the frame 300, the track module 220 is fixed on both sides of the frame 300, and the force bearing module is fixed on the track module 220. As shown in Figures 7-12 As shown, the driving motor module has a rotating shaft 211, the driving wheel set is rotatably mounted on the force bearing module, the driving wheel set is connected with the end of the rotating shaft 211, the driving wheel set rotates synchronously with the rotating shaft 211, and a gap is left between the driving wheel set and the rotating shaft 211 in the radial direction. The embodiment increases the force bearing module and configures it to bear the radial force from the track 223, so that only the torque is transmitted by the rotating shaft 211 of the driving motor module, and the radial force from the track 223 is not borne, wherein the radial force from the track 223 includes the track tension and the impact force transmitted by the track 223 to the force bearing module when abnormal conditions such as collision and falling occur. Thus, the probability of damage to the rotating shaft 211 can be reduced to some extent, the service life of the product is prolonged, the design and strength requirements of the rotating shaft 211 can be reduced to some extent, and the cost is reduced. It should be noted that the rotating shaft 211 in the embodiment is a motor shaft. In other embodiments, the rotating shaft 211 can also be adapted to other forms such as a speed reducer output shaft and the like, which are suitable for driving the driving wheel set to rotate, and the like, which are not limited herein.

[0045] In some embodiments, as shown in Figures 8-11As shown, the force bearing module includes a force bearing flange 231 and a bearing 232, the outer ring of the bearing 232 is connected with the force bearing flange 231, the inner ring of the bearing 232 is connected with the driving wheel set, the inner ring of the bearing 232 rotates with the driving wheel set, and the outer ring of the bearing 232 is rotatable relative to the inner ring of the bearing 232, at this time, the radial force from the track 223 is borne by the bearing 232. Among them, the number of bearings 232 can be one or more, and multiple bearings 232 are arranged continuously or at intervals along the axial direction of the force bearing flange 231. For example, as shown in Figure 2 As shown, the force bearing module in this embodiment includes two bearings 232 and the two bearings 232 are arranged at intervals. In other embodiments, the number of bearings 232 included in the force bearing module can also be other numbers, for example, 3, 4, 6, etc. In other embodiments, the bearings 232 included in the force bearing module can also be arranged continuously.

[0046] In some embodiments, as shown in Figure 7 , Figure 8 , Figure 10 , Figure 11 and Figure 12 , the track module 220 includes a track inner clamping plate 221, the force bearing module is fixed on the track inner clamping plate 221, and the track inner clamping plate 221 is located between the force bearing module and the vehicle frame 300. This arrangement is conducive to forming a separate module for the track module 220.

[0047] In some embodiments, as shown in Figure 7 and Figure 8 , the track module 220 includes a track inner clamping plate 221, a track outer clamping plate 222, a track 223, a guide wheel 224, a load wheel, and a tensioning mechanism. The track inner clamping plate 221 is arranged close to the vehicle frame 300, the track outer clamping plate 222 is arranged away from the vehicle frame 300, the track 223 is located between the track inner clamping plate 221 and the track outer clamping plate 222, the force bearing module, the guide wheel 224, and the load wheel are installed on the track inner clamping plate 221, the driving wheel set includes a driving wheel 241, the driving wheel 241, the guide wheel 224, and the load wheel are engaged with the track 223, and the tensioning mechanism is configured to move the position of the guide wheel 224. During installation, after the track 223 is engaged with the driving wheel 241, the guide wheel 224, and the load wheel, the track outer clamping plate 222 is fixed and locked, and then by adjusting the tensioning mechanism, the guide wheel 224 can be moved to a suitable position, at this time, the track 223 has a corresponding tensioning force, and each part is fixed, thereby forming a separate track module.

[0048] It should be noted that, compared with the implementation manner in the related art in which the guide wheel 224, the load wheel, and other parts are fixed on the vehicle frame 300, the force bearing module, the guide wheel 224, and the load wheel are installed on the track inner clamping plate 221 in this embodiment, which is conducive to forming a separate module for the track module 220.

[0049] Specifically, in the embodiment, the guide wheel 224 and the supporting wheel can be installed on the track inner clamping plate 221 through a rotating shaft. In other embodiments, the guide wheel 224 and the supporting wheel can also be installed on the track inner clamping plate 221 through other connection modes. Specifically, in the embodiment, as shown in Figure 7 , the tensioning mechanism can include a tensioning bolt 225. In other embodiments, the tensioning mechanism can also be implemented as other structures capable of achieving the tensioning function. Specifically, in the embodiment, as shown in Figure 7 , the tensioning mechanism is arranged close to the guide wheel. In other embodiments, the tensioning mechanism can also be arranged close to the driving wheel, or between the guide wheel and the driving wheel.

[0050] As shown in Figure 7 and Figure 12 , the track module 220 further includes a guide wheel adapter flange 226, a guide wheel rotating shaft 227, and a guide wheel bearing 228. The guide wheel 224 is connected with the guide wheel rotating shaft 227 through the guide wheel adapter flange 226, and the guide wheel bearing 228 is sleeved on the guide wheel rotating shaft 227. In the embodiment, the number of guide wheel bearings 228 is two, one guide wheel bearing 228 is located between the guide wheel 224 and the track inner clamping plate 221, and the other guide wheel bearing 228 is located between the guide wheel 224 and the track outer clamping plate 222. In other embodiments, the number of guide wheel bearings 228 can also be set according to actual needs, which is not limited in the present specification.

[0051] In some embodiments, the track module 220 and the vehicle frame 300 are detachably connected, including but not limited to screw connection, pin connection, key connection and other connection modes, so that the driving mechanism 200 for the tracked chassis has greater expandability in the later stage. Only the size of the connecting bracket needs to be changed, and the entire tracked chassis can be changed to form a universal chassis.

[0052] In some embodiments, as shown in Figure 8 and Figure 10 , the driving motor module is installed in the bin body 400 and is installed on the vehicle frame 300 with the bin body 400. In the embodiment, the driving motor 212 can be independently installed with the bin body 400, which is conducive to the sealing design of the driving motor 212.

[0053] In some embodiments, in combination with Figure 6 , Figure 8 and 10, the driving motor module includes a driving motor 212 and a motor flange 213. The driving motor 212 is detachably connected with the bin body 400 through the motor flange 213. That is, the driving motor 212 is fixed on the bin body 400 through the motor flange 213.

[0054] In some embodiments, as shown in Figures 8-11As shown, the driving wheel set comprises a driving wheel 241 and a driving adapter flange 242, the driving wheel 241 is fixedly connected with the driving adapter flange 242, the driving adapter flange 242 is in transmission connection with the rotating shaft 211, the driving adapter flange 242 leaves a gap between the rotating shaft 211 of the driving motor module in the radial direction, and the driving adapter flange 242 is rotatably connected with the force bearing module. In the embodiment, as shown, the driving adapter flange 242 is in transmission connection with the rotating shaft 211 through the transmission flat square 500. In other embodiments, the driving adapter flange 242 can also be in transmission connection with the rotating shaft 211 through other transmission connection modes such as meshing transmission. Figures 8-11

[0055] Some embodiments of the present application also provide a tracked chassis 100, which comprises the driving mechanism 200 for the tracked chassis 100 provided by the above-described embodiments. Sensors, work heads and other parts can be installed on the tracked chassis 100, and by installing different work heads at different positions such as front, rear, top and bottom of the tracked chassis 100, a machine with different functions can be composed. At the same time, the size of the tracked chassis 100 can be changed by adjusting the size of the frame 300 of the driving mechanism 200, so as to adapt to different work heads.

[0056] In some embodiments of the present application, the machine can be implemented as a snow sweeper, which comprises the tracked chassis 100 provided by the above-described embodiments and at least one work head installed on the tracked chassis 100, the at least one work head being configured to cooperate with the tracked chassis 100 to realize the snow sweeping function. In other embodiments of the present application, the machine can also be implemented as a mower, a sweeper, a patrol robot, a delivery robot and the like.

[0057] According to the description of the above-described embodiments, in the driving mechanism 200 for the tracked chassis 100, the tracked chassis 100 and the snow sweeper described in the embodiments of the present application, the driving mechanism 200 comprises a driving motor module, a track module 220, a force bearing module and a driving wheel set, the driving motor module is fixed on the frame 300, the track module 220 is fixed on both sides of the frame 300, the force bearing module is fixed on the track module 220 and is configured to bear the radial force from the track 223; the driving wheel set is rotatably installed on the force bearing module, the driving wheel set is connected with the end of the rotating shaft 211 of the driving motor module, the driving wheel set rotates synchronously with the rotating shaft 211, and a gap is left between the driving wheel set and the rotating shaft 211 in the radial direction, so that the rotating shaft 211 only transmits torque and does not bear radial force, to a certain extent, the probability of damage of the motor shaft as the rotating shaft 211 is reduced, the service life of the motor is prolonged, the design and strength requirements of the motor shaft are also reduced, and the cost is reduced.

[0058] ​Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the embodiments of this application as described above, which are not provided in the details for the sake of brevity.

[0059] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description.

[0060] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A drive mechanism for a track undercarriage, characterized in that, The drive motor module is fixed on the vehicle frame (300), and has a rotating shaft (211). The track module (220) is fixed on both sides of the vehicle frame (300). The force bearing module is fixed on the track module (220). The drive wheel set is rotatably installed on the force bearing module, and is connected with the end of the rotating shaft (211). The force bearing module includes a force bearing flange (231) and a bearing (232), the outer ring of the bearing (232) is connected with the force bearing flange (231), the inner ring of the bearing (232) is connected with the drive wheel set, the inner ring of the bearing (232) rotates with the drive wheel set, and the outer ring of the bearing (232) is relatively rotatable with the inner ring of the bearing (232).

2. The drive mechanism for a track undercarriage of claim 1, wherein, The track module (220) includes a track inner clamping plate (221), the force bearing module is fixed on the track inner clamping plate (221), and the track inner clamping plate (221) is located between the force bearing module and the vehicle frame (300).

3. The drive mechanism for a track undercarriage of claim 1, wherein, The track module (220) includes a track inner clamping plate (221), a track outer clamping plate (222), a track (223), a guide wheel (224), a carrier wheel and a tensioning mechanism, the track inner clamping plate (221) is arranged close to the vehicle frame (300), the track outer clamping plate (222) is arranged away from the vehicle frame (300), the track (223) is located between the track inner clamping plate (221) and the track outer clamping plate (222), the force bearing module, the guide wheel (224) and the carrier wheel are installed on the track inner clamping plate (221), the drive wheel set includes a drive wheel (241), the drive wheel (241), the guide wheel (224) and the carrier wheel are engaged with the track (223), and the tensioning mechanism is configured to move the position of the guide wheel (224).

4. The drive mechanism for a track undercarriage of claim 1, wherein, The track module (220) is detachably connected with the vehicle frame (300).

5. The drive mechanism for a track undercarriage of claim 1, wherein, The drive motor module is installed in a warehouse body (400), and the warehouse body (400) is installed on the vehicle frame (300).

6. The drive mechanism for a track undercarriage of claim 1, wherein, The drive motor module includes a drive motor (212) and a motor flange (213), and the drive motor (212) is detachably connected with the warehouse body (400) through the motor flange (213).

7. The drive mechanism for a track undercarriage of claim 6, wherein, The drive wheel set includes a drive wheel (241) and a drive adapter flange (242), the drive wheel (241) is fixedly connected with the drive adapter flange (242), the drive adapter flange (242) is in transmission connection with the rotating shaft (211), and the drive adapter flange (242) is rotatably connected with the force bearing module.

8. The drive mechanism for a track undercarriage of claim 1, wherein, The drive mechanism (200) for the track walking chassis (100) is described in any one of claims 1-8.

9. A track undercarriage characterized by, The track walking chassis (100) is described in claim 9.

10. A snow thrower characterized by, ​

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