Chassis walking mechanism of tractor

Abstract

The invention relates to the field of agricultural machinery, in particular to a chassis traveling mechanism of a tractor, which is characterized in that crawler belts are symmetrically arranged on two sides of a frame along the width direction, a plurality of crawler teeth are arranged on the peripheral surfaces of the crawler belts, and a crawler belt cleaning mechanism is arranged on the frame above the crawler belts and comprises a cleaning shaft which is driven by a power device and rotates around the axis of the cleaning shaft; a spiral plate is fixedly installed on the cleaning shaft, the screw pitch of the spiral plate is consistent with the distance between every two adjacent crawler teeth, a plurality of protruding toothed plates are evenly arranged on the side, away from the cleaning shaft, of the spiral plate at intervals in the length direction of the spiral plate, and the toothed plate located at the bottom of the spiral plate extends into the position between every two adjacent crawler teeth. And in the rotating process of the spiral plate, the toothed plate rotating to the bottom of the spiral plate alternately enters the space between the two adjacent crawler teeth, and the soil compacted between the two crawler teeth is loosened and scraped through the toothed plate.

Description

Technical Field

[0001] The invention relates to the field of agricultural machinery, and in particular to a chassis traveling mechanism of a tractor. Background Art

[0002] Crawler tractors are also called "track tractors" or "crawler tractors". When in operation, they climb or move by the pushing action of the crawler tracks. The crawler tracks will come into contact with the ground soil during the movement and cause a certain degree of adhesion. If the continuously adhered soil is not removed in time, it will gradually fill the gaps between the crawler teeth, resulting in reduced friction between the crawler tracks and the ground, resulting in weak grip and slippage, which seriously affects the tractor's ability to pass and work efficiency.

[0003] In the prior art, the invention patent with application number CN202411337474.5 discloses a crawler robot chassis that is adaptive to mountainous roads, including a chassis frame and transmission tracks symmetrically arranged on both sides of the chassis frame, and a double-sided cleaning mechanism for simultaneously cleaning the inner and outer sides of the transmission tracks is arranged above the transmission tracks, and the double-sided cleaning mechanism includes a dual-axis motor fixedly connected to the upper surface of the chassis frame, and bidirectional screw rods are symmetrically fixedly connected to the motor shafts on both sides of the dual-axis motor, and the upper row of brushes and the lower row of brushes are arranged to simultaneously scrape off the adhesions on the inner and outer surfaces of the transmission tracks.

[0004] The above application uses a brush to clean the track. Although it can reduce the adhesion of mud on the track to a certain extent, the cleaning effect of the brush is limited and it is unable to efficiently remove the attachments compacted in the gaps between the grouser teeth. Summary of the invention

[0005] The object of the present invention is to provide a chassis walking mechanism of a tractor, which can loosen and scrape the soil between two grousers through the tooth plate on the spiral plate, so as to solve the defects mentioned in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A chassis walking mechanism of a tractor comprises a frame, wherein the frame is symmetrically provided with crawlers on both sides along the width direction, a plurality of crawlers are evenly spaced on the outer peripheral surface of the crawler around its length direction, a crawler cleaning mechanism is provided on the frame located above the crawler, the crawler cleaning mechanism comprises a cleaning shaft driven by a power device and rotating around its own axis, a spiral plate is fixedly mounted on the cleaning shaft, the pitch of the spiral plate is consistent with the spacing between two adjacent crawlers, a plurality of protruding tooth plates are evenly spaced around the length direction of the spiral plate on the side away from the cleaning shaft, and the tooth plate located at the bottom of the spiral plate extends between two adjacent crawlers.

[0007] As a further improvement, the cleaning shaft is parallel to the length direction of the crawler track located therebelow.

[0008] As a further improvement, a hook portion is provided at one end of the tooth plate away from the spiral plate, and the hook portion extends along the axial direction of the cleaning shaft. The axial dimension of the hook portion along the cleaning shaft is smaller than the gap between two adjacent grousers.

[0009] As a further improvement, a coil spring is connected between two adjacent tooth plates or between two adjacent hook-shaped portions.

[0010] As a further improvement, two groups of cleaning brush assemblies are provided on the cleaning shaft along its axial direction, and the cleaning brush assembly includes a brush plate fixedly mounted on the cleaning shaft, and the brush plate is provided with bristles for cleaning the track; the spiral plate is located between the two groups of cleaning brush assemblies.

[0011] As a further improvement, the cleaning shaft is rotatably mounted on a movable frame, and the movable frame is driven by a driving device and reciprocates along the width direction of the crawler track.

[0012] As a further improvement, a fixed frame is fixedly installed on the frame, and the movable frame is slidably installed on the fixed frame; the driving device includes an electric push rod installed on the fixed frame, the output end of the electric push rod extends out along the axial direction of the cleaning shaft and is fixedly installed with a movable plate, the movable plate is provided with an inclined groove, and a sliding column matching the inclined groove is fixedly installed on the movable frame, when the movable plate moves along the axial direction of the cleaning shaft, the inclined groove acts on the sliding column and drives the movable frame to move along the width direction of the track.

[0013] As a further improvement, one end of the cleaning shaft is drivingly connected to the power device.

[0014] As a further improvement, support shafts that can slide along the axial direction are respectively provided at both ends of the cleaning shaft, the support shafts are coaxially arranged with the cleaning shaft, the support shafts are rotatably mounted on the movable frame, one of the support shafts is transmission-connected to the power device; springs are respectively connected between the cleaning shaft and the two support shafts.

[0015] As a further improvement, a coaxially arranged rotating wheel is fixedly mounted on the cleaning shaft, and a closed curved groove is arranged around the outer peripheral surface of the rotating wheel. A sliding pin matching the curved groove is fixedly mounted on the movable frame. When the cleaning shaft rotates, the sliding pin acts on the curved groove and drives the cleaning shaft to reciprocate along its own axial direction. The cleaning shaft drives the tooth plate to reciprocate along the axial direction of the cleaning shaft between two adjacent grouser teeth.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In the process of the spiral plate rotating, the tooth plate rotated to the bottom of the spiral plate alternately enters between two adjacent grousers, and the tooth plate loosens and scrapes the soil compacted between the two grousers, and cooperates with the cleaning brush assemblies arranged at the front and rear ends of the cleaning shaft, thereby achieving a better cleaning effect on the crawler. The present invention can effectively increase the range of the tooth plate to scrape away the dirt between the grousers by providing a hook-shaped portion at the end of the tooth plate, and at the same time, a coil spring is provided between two adjacent hook-shaped portions. When the tooth plate and the hook-shaped portion loosen the dirt between the two grousers, the coil spring can further remove the dirt between the two grousers over a large range, thereby improving the cleaning efficiency of the crawler track. In the process of the cleaning shaft driving the spiral plate to rotate, the movable frame drives the cleaning shaft and the spiral plate to reciprocate left and right along the width direction of the track, thereby increasing the cleaning range of the track cleaning mechanism and further improving the cleaning efficiency; In the present application, when the cleaning shaft rotates, the sliding pin acts on the curved groove and drives the cleaning shaft to reciprocate along its own axial direction. The cleaning shaft drives the spiral plate to reciprocate slightly along the axial direction of the cleaning shaft. The small reciprocating motion of the spiral plate is used to shake off the dirt stuck to the tooth plate, the hook-shaped part and the spiral spring, thereby improving the cleaning efficiency of the crawler track. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 is a schematic structural diagram of Embodiment 1 of the present invention; Figure 2 is a schematic structural diagram of the bottom of the fender according to the first embodiment of the present invention; Figure 3 is a schematic structural diagram of a fixing frame according to a first embodiment of the present invention; Figure 4 is a schematic structural diagram of a cleaning shaft according to a first embodiment of the present invention; Figure 5 Schematic diagram of the structure of the spiral plate of the first embodiment of the present invention; Figure 6 is an exploded schematic diagram of a fixing frame according to the first embodiment of the present invention; Figure 7 is a schematic structural diagram of a cleaning shaft according to a second embodiment of the present invention; Figure 8is an exploded schematic diagram of a cleaning shaft according to a second embodiment of the present invention; Fig. 9 It is a schematic structural diagram of a rotating wheel according to a second embodiment of the present invention.

[0019] In the figure: 1-frame; 2-wheel frame; 3-support wheel group; 4-driving wheel; 5-track; 6-grouser; 7-mudguard; 8-fixed frame; 9-movable frame; 10-cleaning shaft; 11-support; 12-drive box; 13-cleaning motor; 14-spiral plate; 15-tooth plate; 16-hook; 17-spiral spring; 18-cleaning brush assembly; 19-brush plate; 20-bristles; 21-side plate; 22-slide rod; 23-slide sleeve; 24-electric push rod; 25-guide rail; 26-movable plate; 27-bevel groove; 28-slide column; 29-support shaft; 30-square column; 31-square groove; 32-spring; 33-rotor; 34-curved groove; 35-slide pin; 36-support rod; 37-rubber dust cover. DETAILED DESCRIPTION

[0020] 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. Example

[0021] like Figures 1 to 6 As shown, a chassis travel mechanism of a tractor comprises a frame 1, and a track frame 2 is respectively fixed or welded to the left and right sides of the frame 1 in the width direction by bolts, and a supporting wheel group 3 is provided on the track frame 2. The left and right sides of the frame 1 are also respectively provided with a driving wheel 4 located above the track frame 2, and the driving wheel 4 is connected to the engine or the motor, and a track 5 is sleeved on the outer side of the supporting wheel group 3 and the driving wheel 4 located on the same side. The outer peripheral surface of the track 5 is evenly spaced around the length direction thereof, and the grouser 6 extends left and right along the width direction of the track 5. A mud guard 7 is provided above the track 5, and the mud guard 7 is fixedly mounted on the track frame 2 through a supporting rod 36. A track cleaning mechanism is provided at the bottom of the mud guard 7, and the track cleaning mechanism is located above the corresponding track 5.

[0022] Specifically, if Figure 2 and Figure 3As shown, a fixed frame 8 is fixedly installed at the bottom of the fender 7 by bolts, a movable frame 9 is slidably installed at the bottom of the fixed frame 8, and a cleaning shaft 10 driven by a power device and rotating around its own axis is provided at the bottom of the movable frame 9. A support 11 is fixedly installed at the bottom of the front end of the movable frame 9 by bolts, and a drive box 12 is fixedly installed at the bottom of the rear end. The front end of the cleaning shaft 10 is rotatably installed on the support 11 through a bearing, and the rear end is rotatably installed on the front side wall of the drive box 12; the power device is specifically a cleaning motor 13 installed in the drive box 12 by bolts, and the rotating shaft of the cleaning motor 13 is connected to the rear end of the cleaning shaft 10 by a gear pair, and the cleaning motor 13 drives the cleaning shaft 10 to rotate when working.

[0023] like Figure 4 and Figure 5 As shown, a spiral plate 14 is welded on the outer circumference of the cleaning shaft 10, and the pitch of the spiral plate 14 is consistent with the spacing between two adjacent grousers 6. A plurality of protruding tooth plates 15 are evenly spaced around the length direction of the spiral plate 14 on the side away from the cleaning shaft 10. The tooth plates 15 extend in the direction away from the cleaning shaft 10. The tooth plates 15 are integrally formed on the spiral plate 14, and the tooth plates 15 located at the bottom of the spiral plate 14 extend between two adjacent grousers 6. The rotation speed of the cleaning shaft 10 is related to the rotation speed of the crawler 5. When the crawler 5 is running, the cleaning motor 13 drives the cleaning shaft 10 and the spiral plate 14 to rotate, so as to prevent the spiral plate 14 from interfering with the movement of the grousers 6 on the crawler 5. During the rotation of the spiral plate 14, the tooth plates 15 rotating to the bottom of the spiral plate 14 alternately enter between two adjacent grousers 6, and the tooth plates 15 loosen and scrape the soil compacted between the two grousers 6.

[0024] The cleaning shaft 10 is parallel to the length direction of the crawler track 5 located therebelow. In the present embodiment, the crawler track 5 located at the top is tilted with the front end lower and the rear end higher. The cleaning shaft 10 is also tilted with the front end lower and the rear end higher. Thus, the multiple tooth plates 15 rotating to the bottom of the spiral plate 14 can all enter the gaps between the grouser teeth 6, thereby improving the cleaning efficiency of the crawler track 5.

[0025] like Figure 5 As shown, in this embodiment, one end of the tooth plate 15 away from the spiral plate 14 is bent to one side to form a hook-shaped portion 16, and the hook-shaped portion 16 extends along the axial direction of the cleaning shaft 10. The setting of the hook-shaped portion 16 can effectively increase the range of action of the tooth plate 15 to scrape the mud between the grousers 6, thereby improving the cleaning efficiency of the crawler 5. The axial dimension of the hook-shaped portion 16 along the cleaning shaft 10 is smaller than the gap between two adjacent grousers 6, so as to avoid the hook-shaped portion 16 from scraping the side wall of the grouser 6 during the rotation process, thereby reducing the wear on the crawler 5.

[0026] A coil spring 17 is connected between two adjacent tooth plates 15 or between two adjacent hook portions 16. In this embodiment, a hanging hole is provided on the hook portion 16, and the coil spring 17 is connected between two adjacent hook portions 16, and both ends of the coil spring 17 are respectively hung in the hanging holes of the corresponding hook portions 16. During the rotation of the spiral plate 14, when the tooth plate 15 and the hook portion 16 enter between two adjacent grousers 6 and loosen the soil compacted between the two grousers 6, the coil spring 17 can then further remove the soil between the two grousers 6 in a large range, further improving the cleaning efficiency of the crawler 5.

[0027] Two groups of cleaning brush assemblies 18 are provided on the cleaning shaft 10 along its axial direction. The cleaning brush assembly 18 includes a brush plate 19 fixedly mounted on the cleaning shaft 10. A plurality of brush plates 19 are evenly spaced around the circumference of the cleaning shaft 10. The brush plates 19 are provided with bristles 20 for cleaning the track 5. The bristles 20 may be steel wire bristles. When the cleaning shaft 10 rotates, the bristles 20 are driven to clean the outer surface of the track 5. The brush plate 19 is arc-shaped and fixedly mounted on the cleaning shaft 10 by bolts, so that the bristles 20 can be replaced after being worn. The spiral plate 14 is located between the two groups of cleaning brush assemblies 18. In actual use, the outer surface of the track 5 is firstly cleaned by the cleaning brush assembly 18 located at the front end of the cleaning shaft 10 to remove the dirt and debris that are not firmly attached to the track 5; then the spiral plate 14 is used to loosen and scrape off the dirt compacted between the grouser teeth 6; finally, the outer surface of the track 5 is further cleaned by the cleaning brush assembly 18 located at the rear end of the cleaning shaft 10 to thoroughly remove the dirt attached between the grouser teeth 6, which has a better cleaning effect on the track 5.

[0028] like Figure 3 As shown, in this embodiment, the fixed frame 8 is provided with downwardly bent side plates 21 on both sides along the width direction of the crawler 5, and a slide bar 22 extending left and right along the width direction of the crawler 5 is fixedly installed between the two side plates 21 by bolts. Two slide bars 22 are provided along the axial direction of the cleaning shaft 10, and the front and rear ends of the movable frame 9 are respectively fixedly installed with slide sleeves 23 by bolts. The slide sleeves 23 are slidably installed on the corresponding slide bars 22 to support and guide the movable frame 9. In addition, retractable rubber dust covers 37 are also respectively provided on the slide bars 22 on the opposite sides of the slide sleeves 23 to prevent the muddy water thrown up by the crawler 5 from splashing onto the slide bars 22.

[0029] The movable frame 9 is driven by a driving device and reciprocates left and right along the width direction of the crawler 5. Figure 6As shown, the driving device includes an electric push rod 24 installed on the top of the fixed frame 8 by bolts, and the output end of the electric push rod 24 extends forward and obliquely downward along the axial direction of the cleaning shaft 10; two guide rails 25 arranged opposite to each other left and right along the width direction of the track 5 are fixedly installed on the top of the fixed frame 8 by bolts, and a movable plate 26 sliding along the axial direction of the cleaning shaft 10 is installed between the two guide rails 25, and the output end of the electric push rod 24 is fixedly connected to the movable plate 26 by bolts, and the movable plate 26 can be driven to move forward and backward along the axial direction of the cleaning shaft 10 through the extension and retraction of the electric push rod 24. A vertically penetrating inclined groove 27 is provided on the movable plate 26. The length direction of the inclined groove 27 is inclined relative to the cleaning shaft 10. The middle part of the fixed frame 8 is hollowed out. A sliding column 28 matching the inclined groove 27 is welded on the top of the movable frame 9. The sliding column 28 is perpendicular to the movable plate 26 and the upper end of the sliding column 28 extends into the inclined groove 27. When the movable plate 26 moves along the axial direction of the cleaning shaft 10, the inclined groove 27 acts on the sliding column 28 and drives the movable frame 9 to move along the width direction of the track 5.

[0030] In the process of the cleaning shaft 10 driving the spiral plate 14 to rotate, the reciprocating telescopic movement of the electric push rod 24 drives the movable plate 26 to reciprocate back and forth along the axial direction of the cleaning shaft 10, and then the inclined groove 27 on the movable plate 26 acts on the sliding column 28 and drives the movable frame 9 to reciprocate left and right along the width direction of the track 5. The movable frame 9 drives the cleaning shaft 10 and the spiral plate 14 to reciprocate left and right along the width direction of the track 5, thereby increasing the cleaning range of the track cleaning mechanism for the track 5 and improving the cleaning efficiency. Example

[0031] like Figures 7 to 9 As shown, the difference between this embodiment and the first embodiment is that the front and rear ends of the cleaning shaft 10 are respectively provided with a support shaft 29 that can slide along its axial direction, the support shaft 29 is coaxially arranged with the cleaning shaft 10, and the ends of the two support shafts 29 that are close to each other are respectively integrally formed with a coaxially arranged square column 30, and the front and rear ends of the cleaning shaft 10 are respectively provided with a square groove 31 that matches the square column 30, and the square column 30 is inserted into the corresponding square groove 31 to prevent the support shaft 29 and the cleaning shaft 10 from rotating relative to each other; the support shaft 29 at the front end is rotatably mounted on the support 11 through a bearing, and the support shaft 29 at the rear end is rotatably mounted on the front side wall of the drive box 12 and the support shaft 29 at the rear end is connected to the cleaning motor 13 through a gear pair, and the cleaning motor 13 drives the support shaft 29 at the rear end to rotate when working, and then the support shaft 29 at the rear end drives the cleaning shaft 10 to rotate through the square column 30. A spring 32 is provided between the end of the square column 30 away from the corresponding support shaft 29 and the inner wall of the square groove 31 to reduce the clearance of the axial movement of the cleaning shaft 10.

[0032] The cleaning shaft 10 is provided with a coaxially arranged rotating wheel 33 fixedly mounted on one end thereof. A closed curved groove 34 is arranged around the outer circumference of the rotating wheel 33. The curved groove 34 is wavy in shape. A sliding pin 35 matching the curved groove 34 is welded or fixedly mounted by bolts on the bottom of the movable frame 9. The sliding pin 35 is perpendicular to the axis of the rotating wheel 33 and the lower end of the sliding pin 35 extends into the curved groove 34. When the cleaning shaft 10 rotates, the sliding pin 35 acts on the curved groove 34 and drives the cleaning shaft 10 to reciprocate along its own axial direction. The cleaning shaft 10 drives the spiral plate 14 to reciprocate along the axial direction of the cleaning shaft 10 with a small amplitude. At the same time, the spiral plate 14 drives the tooth plate 15, the hook-shaped portion 16 and the spiral spring 17 to reciprocate along the axial direction of the cleaning shaft 10 between two adjacent crawler teeth 6. With the help of the small reciprocating motion of the spiral plate 14 along the axial direction of the cleaning shaft 10, the soil adhered to the tooth plate 15, the hook-shaped portion 16 and the spiral spring 17 is shaken off, thereby improving the cleaning efficiency of the crawler track 5.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A chassis travel mechanism of a tractor, comprising a frame, wherein crawlers are symmetrically arranged on both sides of the frame along the width direction, a plurality of grousers are evenly spaced around the outer circumference of the crawler along the length direction thereof, and a crawler cleaning mechanism is arranged on the frame above the crawler, characterized in that: The track cleaning mechanism includes a cleaning shaft driven by a power device and rotating around its own axis, a spiral plate is fixedly mounted on the cleaning shaft, the pitch of the spiral plate is consistent with the spacing between two adjacent grousers, a side of the spiral plate away from the cleaning shaft is provided with a plurality of protruding tooth plates evenly spaced around its length, and the tooth plate located at the bottom of the spiral plate extends between two adjacent grousers.

2. A chassis traveling mechanism of a tractor according to claim 1, characterized in that: The cleaning shaft is parallel to the length direction of the crawler belt located therebelow.

3. A chassis traveling mechanism of a tractor according to claim 1, characterized in that: A hook portion is provided at one end of the tooth plate away from the spiral plate. The hook portion extends along the axial direction of the cleaning shaft. The axial dimension of the hook portion along the cleaning shaft is smaller than the gap between two adjacent grousers.

4. A chassis traveling mechanism of a tractor as claimed in claim 3, characterized in that: A coil spring is connected between two adjacent tooth plates or between two adjacent hook-shaped parts.

5. The chassis traveling mechanism of a tractor according to claim 1, characterized in that: The cleaning shaft is provided with two groups of cleaning brush assemblies along its axial direction. The cleaning brush assemblies include a brush plate fixedly mounted on the cleaning shaft, and the brush plate is provided with bristles for cleaning the track. The spiral plate is located between the two groups of cleaning brush assemblies.

6. The chassis traveling mechanism of a tractor according to claim 1, characterized in that: The cleaning shaft is rotatably mounted on a movable frame, and the movable frame is driven by a driving device and reciprocates along the width direction of the crawler.

7. A chassis traveling mechanism of a tractor as claimed in claim 6, characterized in that: A fixed frame is fixedly installed on the frame, and the movable frame is slidably installed on the fixed frame; the driving device includes an electric push rod installed on the fixed frame, the output end of the electric push rod extends out along the axial direction of the cleaning shaft and is fixedly installed with a movable plate, the movable plate is provided with an inclined groove, and a sliding column matching the inclined groove is fixedly installed on the movable frame, when the movable plate moves along the axial direction of the cleaning shaft, the inclined groove acts on the sliding column and drives the movable frame to move along the width direction of the track.

8. The chassis traveling mechanism of a tractor according to claim 6, characterized in that: One end of the cleaning shaft is drivingly connected to the power device.

9. A chassis traveling mechanism of a tractor as claimed in claim 6, characterized in that: The two ends of the cleaning shaft are respectively provided with support shafts that can slide along the axial direction thereof, the support shaft is coaxially arranged with the cleaning shaft, the support shaft is rotatably mounted on the movable frame, one of the support shafts is transmission-connected to the power device; springs are respectively connected between the cleaning shaft and the two support shafts.

10. A chassis traveling mechanism of a tractor as claimed in claim 9, characterized in that: A coaxially arranged rotating wheel is fixedly mounted on the cleaning shaft, and a closed curved groove is arranged around the outer peripheral surface of the rotating wheel. A sliding pin matching the curved groove is fixedly mounted on the movable frame. When the cleaning shaft rotates, the sliding pin acts on the curved groove and drives the cleaning shaft to reciprocate along its own axial direction, and the cleaning shaft drives the tooth plate to reciprocate along the axial direction of the cleaning shaft between two adjacent grousers.

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