A heavy skid steer lawnmower

Abstract

This application relates to the field of lawnmower technology, specifically disclosing a heavy-duty skid-steer lawnmower, which includes a frame housing, a rotating tube, and a rotating part; two rotating parts are provided and respectively installed inside both ends of the rotating tube, and multiple blades are installed on the circumference of the rotating tube; the rotating part includes a fixed plate, a mounting plate, a sleeve, a bearing, and elastic sealing rings; the fixed plate is connected to the inner wall of the rotating tube, and a rotating shaft is connected to the side of the fixed plate; the mounting plate is detachably connected to the inner wall of the end of the frame housing, and the sleeve is connected to the side of the mounting plate near the rotating tube; the outer ring of the bearing is fixedly connected to the inner wall of the sleeve, and the inner ring of the bearing is fixedly connected to the circumference of the rotating shaft; the rotating shaft passes through the end of the frame housing and an oil nozzle is installed on its end face; two elastic sealing rings are provided and respectively located on both sides of the bearing, and the elastic sealing rings seal between the inner ring of the sleeve and the circumference of the rotating shaft; an oil passage is provided inside the rotating shaft to connect the oil nozzle and the space between the two elastic sealing rings. This application has the effect of extending the service life of the bearing.

Description

Technical Field

[0001] This application relates to the field of lawnmower technology, and in particular to a heavy-duty skid steer lawnmower. Background Technology

[0002] In agricultural production, landscaping, and wasteland reclamation, large areas of shrubs and weeds often need to be cleared. Heavy-duty lawnmowers, as efficient clearing equipment, are increasingly in demand. Currently, most heavy-duty lawnmowers on the market are towed by tractors and rely primarily on rotating blades to cut shrubs. However, in actual use, existing heavy-duty lawnmowers still have many technical shortcomings, making it difficult to meet the requirements of efficient and stable operation.

[0003] The rotating tube of a heavy-duty lawnmower drives the blades to rotate. When cutting shrubs, the rotating tube and blades bear a significant load, causing the bearings at both ends of the rotating tube to operate under high load for extended periods. Under high load, the bearings are prone to severe friction, which not only accelerates wear but also causes a rapid increase in bearing temperature. This high-temperature environment easily causes the lubricating oil inside the bearing to deteriorate and fail, further reducing its lubrication effect and creating a vicious cycle of "accelerated wear - increased temperature - lubrication failure." This severely shortens the bearing's lifespan and increases equipment maintenance costs and downtime. Utility Model Content

[0004] In order to extend the service life of bearings, this application provides a heavy-duty skid mower.

[0005] The heavy-duty skid-steer lawnmower provided in this application adopts the following technical solution:

[0006] A heavy-duty skid mower includes a frame housing, a rotating tube, and a rotating part. The rotating tube is rotatably disposed between the two ends of the frame housing. Two rotating parts are provided and respectively installed inside the two ends of the rotating tube. Multiple blades are detachably connected to the circumference of the rotating tube. The rotating part includes a fixed plate, a mounting plate, a sleeve, a bearing, and elastic sealing rings. The fixed plate is connected to the inner wall of the rotating tube, and a rotating shaft is connected to the side of the fixed plate, extending out of the rotating tube. The mounting plate is detachably connected to the inner wall of the end of the frame housing, and the sleeve is connected to the side of the mounting plate near the rotating tube. The outer ring of the bearing is fixedly connected to the inner wall of the sleeve, and the inner ring of the bearing is fixedly connected to the circumference of the rotating shaft. The rotating shaft passes through the end of the frame housing and has an oil nozzle installed on its end face. Two elastic sealing rings are provided and respectively located on both sides of the bearing. The elastic sealing rings seal between the inner ring of the sleeve and the circumference of the rotating shaft. An oil passage is provided inside the rotating shaft, communicating between the oil nozzle and the space between the two elastic sealing rings.

[0007] Optionally, the bearing is a self-aligning ball bearing.

[0008] Optionally, the traction mechanism is mounted on the frame housing for tractor towing the frame housing; the traction mechanism includes an upper slide bar, a lower slide bar, a U-shaped suspension, and a connecting plate; both ends of the upper slide bar are connected to the top surface of the frame housing via plates, and both ends of the lower slide bar are connected to the top surface of the frame housing via plates. The lower slide bar is closer to the forward direction of the frame housing and is positioned lower than the upper slide bar; two lower slide frames are slidably connected to the lower slide bar, and both ends of the U-shaped suspension are connected to the two lower slide frames; an upper slide frame is slidably connected to the upper slide bar, one end of the connecting plate is connected to the upper slide frame, and the other end of the connecting plate is connected to the middle position of the U-shaped suspension; the U-shaped suspension is used to connect to the rear end of the tractor; a hydraulic cylinder is mounted on the side of one of the lower slide frames near the other lower slide frame, and the piston rod end of the hydraulic cylinder is connected to the top surface of the frame housing via a plate.

[0009] Optionally, the transmission mechanism is mounted on the frame housing and is used to drive the rotating tube to rotate; the transmission mechanism includes a drive shaft, a drive pulley, a driven pulley, and a transmission belt; a side plate at one end of the frame housing extends upward, the drive shaft is arranged parallel to the top surface of the frame housing, the drive shaft passes through the side plate and is rotatably connected to the side of the side plate; the drive pulley is connected to the end of the drive shaft that passes through the side plate, the driven pulley is coaxially connected to the end of one of the rotating shafts, and the transmission belt is wound around the drive pulley and the driven pulley; a gearbox is mounted on the frame housing to transmit the power output from the tractor's rear power shaft to the drive shaft.

[0010] Optionally, connecting plates are connected to both ends of the frame housing, the connecting plates are located on the side of the frame housing opposite to the forward direction, a leveling roller is rotatably connected between the two connecting plates, and the leveling roller contacts the ground; a scraper is connected between the two connecting plates, the scraper is used to scrape off the soil adhering to the leveling roller.

[0011] Optionally, the side panels at both ends of the frame housing that are far apart from each other are connected to support plates, and the bottom of the support plates is bent at 90° and supported on the ground.

[0012] Optionally, the frame housing has an open discharge port on the side opposite to the forward direction, and a rear cover plate is connected to the top of the frame housing, with the rear cover plate located above the discharge port; a guide plate is connected between the two ends inside the frame housing, with the guide plate located at the top of the frame housing and above the cutter head.

[0013] Optionally, the back of the cutter head is integrally formed with reinforcing ribs.

[0014] Optionally, the plurality of cutter heads are evenly distributed along the axis of the rotating tube and are staggered between adjacent cutter heads.

[0015] Optionally, the cutter head is detachably connected to the circumference of the rotating tube by bolts.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] 1. Heavy-duty lawnmowers are typically used for clearing bushes. The rotating tube, which drives the blades, bears a greater load, increasing the load on the bearings at both ends of the rotating tube. This leads to increased friction and wear between the bearings, causing them to overheat. Overheating can degrade the lubricating oil. By installing grease fittings at the ends of the shaft, lubricating oil is injected into these fittings and flows through oil channels to the space between two elastic sealing rings. The lubricating oil fills the bearing periphery, providing lubrication and increasing heat dissipation. This prevents excessive wear due to overload and extends the bearing's lifespan.

[0018] 2. When encountering bushes at the edges, due to the limitations of the tractor's shape, it is difficult for the tractor to pull the lawnmower to the edge. Therefore, the hydraulic cylinder drives the piston rod to reciprocate. Since the piston rod is fixed to the frame housing, the hydraulic cylinder and frame housing move. The frame housing drives the upper slide rod to slide in the upper sliding frame, and the lower slide rod to slide in the lower sliding frame, so that the entire frame housing can slide left and right, allowing the frame housing to extend beyond the tractor's size range, thereby clearing the bushes at the edges.

[0019] 3. Since the blade needs to cut shrubs, it requires a high level of strength. Adding reinforcing ribs can enhance the strength of the blade and prevent it from being damaged. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the heavy-duty skid steer lawnmower according to an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the heavy-duty skid mower according to an embodiment of this application from another perspective;

[0022] Figure 3 This is a partial cross-sectional structural schematic diagram of the heavy-duty skid mower according to an embodiment of this application;

[0023] Figure 4 yes Figure 3 A magnified structural diagram of part A in the middle.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Frame housing; 11. Side plate; 12. Gearbox; 13. Discharge port; 14. Rear cover plate; 2. Rotating tube; 21. Cutting head; 211. Reinforcing rib; 3. Rotating part; 31. Fixing plate; 311. Rotating shaft; 3111. Oil passage; 32. Mounting plate; 33. Sleeve; 34. Bearing; 35. Elastic sealing ring; 36. Oil nozzle; 4. Traction mechanism; 41. Upper slide bar; 411. Upper sliding frame; 42. Lower slide bar; 421. Lower sliding frame; 43. U-shaped suspension; 44. Connecting plate; 45. Oil cylinder; 5. Transmission mechanism; 51. Transmission shaft; 52. Drive pulley; 53. Driven pulley; 54. Conveyor belt; 6. Connecting plate; 61. Leveling roller; 62. Scraper; 7. Support plate. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0027] This application discloses a heavy-duty skid-steer lawnmower. (Refer to...) Figure 1-4 The heavy-duty skid mower includes a frame housing 1, a rotating tube 2, a rotating part 3, a traction mechanism 4, and a transmission mechanism 5. The rotating tube 2 is rotatably disposed between the two ends of the frame housing 1. Two rotating parts 3 are provided and installed in the two ends of the rotating tube 2 respectively. The rotating part 3 includes a fixing plate 31, a mounting plate 32, a sleeve 33, a bearing 34, and an elastic sealing ring 35. The fixing plate 31 is connected to the inner wall of the rotating tube 2, and a rotating shaft 311 is integrally formed on the side of the fixing plate 31, extending out of the rotating tube 2. The mounting plate 32 is detachably connected to the inner wall of the end of the frame housing 1. The sleeve 33 is connected to the side of the mounting plate 32 near the rotating tube 2 and is located inside the rotating tube 2. The bearing 34 is a self-aligning ball bearing 34, and the outer ring of the bearing 34 is fixedly connected to the sleeve 33. The inner ring of the bearing 34 is fixedly connected to the circumference of the rotating shaft 311. The rotating shaft 311 passes through the end of the frame housing 1 and has an oil nozzle 36 installed on its end face. Two elastic sealing rings 35 are provided, located on both sides of the bearing 34 respectively. The elastic sealing rings 35 seal between the inner ring of the sleeve 33 and the circumference of the rotating shaft 311. An oil passage 3111 is provided inside the rotating shaft 311 to connect the oil nozzle 36 and the space between the two elastic sealing rings 35. Multiple cutter heads 21 are detachably connected to the circumference of the rotating tube 2. The multiple cutter heads 21 are evenly distributed along the axial direction of the rotating tube 2, and adjacent cutter heads 21 are staggered. The traction mechanism 4 is installed on the frame housing 1 and is used by the tractor to traction the frame housing 1. The transmission mechanism 5 is installed on the frame and is used to drive the rotating tube 2 to rotate.

[0028] Heavy-duty lawnmowers are typically used for clearing bushes. The rotating tube 2, which drives the blade 21, bears a greater load. This increases the load on the bearings 34 at both ends of the rotating tube 2, leading to increased friction and wear between the bearings 34 and causing them to heat up. This heat can cause the lubricating oil to deteriorate. By installing an oil nozzle 36 at the end of the rotating shaft 311, lubricating oil is injected into the nozzle 36. The lubricating oil flows through the oil passage 3111 to the space between the two elastic sealing rings 35, filling the circumference of the bearing 34. This provides lubrication to the bearing 34, increases heat dissipation, prevents excessive wear due to excessive load, and extends the service life of the bearing 34.

[0029] The traction mechanism 4 includes an upper slide bar 41, a lower slide bar 42, a U-shaped suspension 43, a connecting plate 44, and a hydraulic cylinder 45. The two ends of the upper slide bar 41 are connected to the top surface of the frame housing 1 via plates, and the two ends of the lower slide bar 42 are also connected to the top surface of the frame housing 1 via plates. The lower slide bar 42 is closer to the forward direction of the frame housing 1 than the upper slide bar 42, and its position is lower than that of the upper slide bar 41. Two lower sliding frames 421 are slidably connected to the lower slide bar 42, and the two ends of the U-shaped suspension 43... It is connected to two lower sliding frames 421; the upper sliding frame 411 is slidably connected to the upper sliding rod 41, one end of the connecting plate 44 is connected to the upper sliding frame 411, and the other end of the connecting plate 44 is connected to the middle position of the U-shaped suspension 43; the U-shaped suspension 43 is used to connect to the rear end of the tractor; the end of the oil cylinder 45 away from the piston rod is installed on the side of one of the lower sliding frames 421 near the other lower sliding frame 421, and the piston rod end of the oil cylinder 45 is connected to the top surface of the frame housing 1 through a plate.

[0030] When encountering bushes at the edges, the tractor's shape makes it difficult to pull the lawnmower to the edge. Therefore, the hydraulic cylinder 45 drives the piston rod to reciprocate. Since the piston rod is fixed to the frame housing 1, the hydraulic cylinder 45 moves the frame housing 1. The frame housing 1 drives the upper slide rod 41 to slide in the upper slide frame 411, and the lower slide rod 42 to slide in the lower slide frame 421. This allows the entire frame housing 1 to slide left and right, extending the frame housing 1 beyond the tractor's size range, thus clearing the bushes at the edges.

[0031] The transmission mechanism 5 includes a drive shaft 51, a drive pulley 52, a driven pulley 53, and a transmission belt 54. The side plate 11 at one end of the frame housing 1 extends upward. The drive shaft 51 is arranged parallel to the top surface of the frame housing 1. The drive shaft 51 passes through the side plate 11 and is rotatably connected to the side of the side plate 11. The drive pulley 52 is connected to the end of the drive shaft 51 that passes through the side plate 11. The driven pulley 53 is coaxially connected to the end of one of the rotating shafts 311. The transmission belt 54 is wound around the drive pulley 52 and the driven pulley 53. A gearbox 12 is installed on the frame housing 1 to transmit the power output from the rear power shaft of the tractor to the drive shaft 51.

[0032] When the tractor pulls the lawnmower, the power shaft at the rear of the tractor transmits power to the drive shaft 51 through the gearbox 12, which in turn drives the drive pulley 52, the driven pulley 53, the rotating shaft 311 and the rotating tube 2 to rotate, so that the blade 21 can perform the grass-cutting action.

[0033] Connecting plates 6 are connected to both ends of the frame housing 1. The connecting plates 6 are located on the side of the frame housing 1 away from the forward direction. A leveling roller 61 is rotatably connected between the two connecting plates 6. The leveling roller 61 contacts the ground. A scraper 62 is connected between the two connecting plates 6. The scraper 62 is used to scrape off the mud adhering to the leveling roller 61.

[0034] After the lawnmower cuts the shrubs, the land where the shrubs were cut is prone to being uneven. The leveling roller 61 rolls over the land, and under the slight pressure of the lawnmower's own weight or the traction mechanism 4, the land is flattened by the downward pressing action. During the process of the leveling roller 61 flattening the land, soil sticks to the leveling roller 61, and the scraper 62 scrapes off the soil to ensure the smoothness of the surface of the leveling roller 61.

[0035] Support plates 7 are connected to the sides of the side plates 11 at both ends of the rack housing 1 that are far apart from each other. The bottom of the support plates 7 is bent at 90° and supported on the ground. The rack housing 1 is supported on the ground by the support plates 7. The bottom area of ​​the support plates 7 is larger than the bottom area of ​​the side plates 11, providing a larger support surface and making the rack housing 1 slide more smoothly.

[0036] An open discharge port 13 is provided on the side of the frame housing 1 away from the forward direction. A rear cover plate 14 is connected to the top of the frame housing 1, and the rear cover plate 14 is located above the discharge port 13. A guide plate is connected between the two ends inside the frame housing 1. The guide plate is located at the top of the frame housing 1 and above the cutter head 21.

[0037] When the blade 21 cuts the weeds, under the action of centrifugal force and guided by the guide plate, the shrubs are thrown out of the discharge port 13, avoiding the accumulation of the cut shrubs at the leveling roller 61 and blocking the discharge of weeds.

[0038] The back of the blade 21 is integrally formed with reinforcing ribs 211. Since the blade 21 is cutting shrubs, it requires a large strength. The reinforcing ribs 211 can enhance the strength of the blade 21 and make it less prone to damage.

[0039] The implementation principle of a heavy-duty skid steer lawnmower according to an embodiment of this application is as follows: Heavy-duty lawnmowers are usually used to clear bushes. The rotating tube 2 drives the blade 21 to bear a greater load, which increases the load on the bearings 34 at both ends of the rotating tube 2. This increases the friction and wear between the bearings 34, causing the bearings 34 to heat up. The heat from the bearings 34 can easily cause the lubricating oil to deteriorate. By setting an oil nozzle 36 at the end of the rotating shaft 311, lubricating oil is injected into the oil nozzle 36. The lubricating oil flows through the oil passage 3111 to the space between the two elastic sealing rings 35. The lubricating oil fills the periphery of the bearings 34, which not only provides lubrication for the bearings 34 but also increases the heat dissipation of the bearings 34, preventing the bearings 34 from being worn excessively due to excessive load and extending the service life of the bearings 34.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A heavy duty skid steer mower characterized by: The system includes a frame housing (1), a rotating tube (2), and a rotating part (3). The rotating tube (2) is rotatably disposed between the two ends of the frame housing (1). Two rotating parts (3) are provided and respectively installed inside the two ends of the rotating tube (2). Multiple cutter heads (21) are detachably connected to the circumference of the rotating tube (2). The rotating part (3) includes a fixing plate (31), a mounting plate (32), a sleeve (33), a bearing (34), and an elastic sealing ring (35). The fixing plate (31) is connected to the inner wall of the rotating tube (2). A rotating shaft (311) is connected to the side of the fixing plate (31) and extends out of the rotating tube (2). The mounting plate (32) is detachably connected to the end of the frame housing (1). The inner wall of the sleeve (33) is connected to the side of the mounting plate (32) near the rotating tube (2); the outer ring of the bearing (34) is fixedly connected to the inner wall of the sleeve (33), and the inner ring of the bearing (34) is fixedly connected to the circumference of the rotating shaft (311); the rotating shaft (311) passes through the end of the frame housing (1) and has an oil nozzle (36) installed on its end face; two elastic sealing rings (35) are provided and are located on both sides of the bearing (34), and the elastic sealing rings (35) seal between the inner ring of the sleeve (33) and the circumference of the rotating shaft (311); the rotating shaft (311) is provided with an oil passage (3111) that connects the oil nozzle (36) and the space between the two elastic sealing rings (35).

2. The heavy-duty skid-steer mower of claim 1, wherein; The bearing (34) is a self-aligning ball bearing (34).

3. The heavy-duty skid-steer mower of claim 1, wherein: The frame housing (1) is equipped with a traction mechanism (4) for tractor towing the frame housing (1); the traction mechanism (4) includes an upper slide rod (41), a lower slide rod (42), a U-shaped suspension (43), and a connecting plate (44); the two ends of the upper slide rod (41) are connected to the top surface of the frame housing (1) by plates, and the two ends of the lower slide rod (42) are connected to the top surface of the frame housing (1) by plates. The lower slide rod (42) is closer to the forward direction of the frame housing (1) and is at a lower position than the upper slide rod (41); two lower sliding frames (421) are slidably connected to the lower slide rod (42). The two ends of the U-shaped suspension (43) are connected to the two lower sliding frames (421); the upper sliding frame (411) is slidably connected to the upper sliding rod (41), one end of the connecting plate (44) is connected to the upper sliding frame (411), and the other end of the connecting plate (44) is connected to the middle position of the U-shaped suspension (43); the U-shaped suspension (43) is used to connect to the tail end of the tractor; one of the lower sliding frames (421) is equipped with a hydraulic cylinder (45) near the side of the other lower sliding frame (421), and the piston rod end of the hydraulic cylinder (45) is connected to the top surface of the frame housing (1) through a plate.

4. The heavy-duty skid-steer mower of claim 1, wherein: A transmission mechanism (5) for driving the rotating tube (2) to rotate is installed on the frame housing (1); the transmission mechanism (5) includes a drive shaft (51), a driving pulley (52), a driven pulley (53), and a transmission belt (54); a side plate (11) at one end of the frame housing (1) extends upward, the drive shaft (51) is arranged parallel to the top surface of the frame housing (1), the drive shaft (51) passes through the side plate (11) and is rotatably connected to the side plate (54). 11) Side view; the drive pulley (52) is connected to the end of the drive shaft (51) that passes through the side plate (11), the driven pulley (53) is coaxially connected to the end of one of the shafts (311), and the transmission belt (54) is wound around the drive pulley (52) and the driven pulley (53); a gearbox (12) is installed on the frame housing (1) for transmitting the power output from the rear power shaft of the tractor to the drive shaft (51).

5. The heavy-duty skid-steer lawnmower according to claim 1, characterized in that: The frame housing (1) is connected to two connecting plates (6) at both ends. The connecting plates (6) are located on the side of the frame housing (1) away from the forward direction. A leveling roller (61) is rotatably connected between the two connecting plates (6) and the leveling roller (61) contacts the ground. A scraper (62) is connected between the two connecting plates (6) and the scraper (62) is used to scrape off the soil adhering to the leveling roller (61).

6. The heavy-duty skid-steer lawnmower according to claim 1, characterized in that: The side plates (11) at both ends of the frame housing (1) are connected to support plates (7) that are far apart from each other. The bottom of the support plates (7) is bent at 90° and supported on the ground.

7. The heavy-duty skid-steer lawnmower according to claim 1, characterized in that: An open discharge port (13) is provided on the side of the frame housing (1) away from the forward direction. A rear cover plate (14) is connected to the top of the frame housing (1) and the rear cover plate (14) is located above the discharge port (13). A guide plate is connected between the two ends inside the frame housing (1) and the guide plate is located at the top of the frame housing (1) and above the cutter head (21).

8. The heavy-duty skid-steer lawnmower according to claim 1, characterized in that: The back of the blade (21) is integrally formed with reinforcing ribs (211).

9. The heavy-duty skid-steer lawnmower according to claim 1, characterized in that: The multiple cutter heads (21) are evenly distributed along the axial direction of the rotating tube (2) and are staggered between adjacent cutter heads (21).

10. The heavy-duty skid-steer lawnmower according to claim 1, characterized in that: The cutter head (21) is detachably connected to the circumference of the rotating tube (2) by bolts.

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