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CN-121970593-A - Wide riding mower

CN121970593ACN 121970593 ACN121970593 ACN 121970593ACN-121970593-A

Abstract

A wide riding mower comprises a mower body, a bottom cover arranged at the bottom of the mower body, a containing cavity, driving shafts, at least two driving shafts, at least one intermediate shaft, a tension pulley and an impeller, wherein the bottom cover is internally provided with a rotary driving piece, the containing cavity is provided with a material outlet, the driving shafts are rotatably connected to the bottom cover, at least two driving shafts are arranged at intervals, the driving wheels are arranged at the upper ends of the driving shafts, the cutting blades are arranged at the lower ends of the driving shafts, the intermediate shaft is arranged between any two adjacent driving shafts and is rotatably connected to the bottom cover, the tension pulley and the impeller are arranged on the intermediate shaft, the annular driving belt sequentially winds around all the driving wheels and the tension pulley from the output end of the rotary driving piece, the containing cavity is provided with a guide cover at a position between the adjacent driving shafts, the guide cover comprises an air inlet and an air outlet, and the impeller drives air to blow to the material outlet through the guide cover through rotation, so that the material at the position between the adjacent driving shafts blows to the material outlet, and the material outlet is effectively improved under the premise that additional power is not required.

Inventors

  • WU JUN
  • YE XIAOBO
  • YE MING

Assignees

  • 宁波大叶园林设备股份有限公司

Dates

Publication Date
20260505
Application Date
20260409

Claims (9)

  1. 1. A wide-width riding mower, comprising: a vehicle body (1) in which a rotation driving element (2) is incorporated; The bottom cover (3) is arranged at the bottom of the vehicle body (1), the bottom cover (3) is provided with a containing cavity (31) with a downward opening, and a discharge opening (32) is arranged at the left side or the right side of the containing cavity (31); The driving shafts (4) are rotationally connected to the bottom cover (3) by taking the vertical direction as an axis, at least two driving shafts (4) are distributed at intervals along the left-right direction, the upper ends of the driving shafts (4) are provided with driving wheels (42), the lower ends of the driving shafts extend to the lower part of the accommodating cavity (31), and the lower ends of the driving shafts (4) are provided with cutting blades (41); At least one intermediate shaft (5) is arranged between any two adjacent driving shafts (4), the intermediate shaft (5) is rotationally connected to the bottom cover (3) by taking the vertical axis as an axis, and the intermediate shaft (5) is provided with a tensioning wheel (51) with the same height relative to the driving wheel (42) and an impeller (52) positioned below the tensioning wheel (51); an endless belt (6) which is wound around all the driving wheels (42) and the tensioning wheel (51) in sequence from the output end of the rotary driving member (2); the position of the accommodating cavity (31) between the adjacent driving shafts (4) is provided with a guide cover (7), the guide cover (7) is positioned on the upper portion of the accommodating cavity (31) and comprises an air inlet (71) communicated to the lower portion of the corresponding impeller (52) and an air outlet (72) facing the discharge port (32), and the impeller (52) drives air to be blown to the discharge port (32) through the guide cover (7) through rotation.
  2. 2. The broad width riding mower according to claim 1, wherein the intermediate shaft (5) is rotatably connected to the upper side of the bottom cover (3) through a bearing, the tension wheel (51) and the impeller (52) are respectively located at the upper part and the lower part of the intermediate shaft (5), the bottom cover (3) is provided with a vent hole (33) penetrating downwards to the accommodating cavity (31) at a position corresponding to the lower part of the impeller (52), and the vent hole (33) is connected with the air inlet (71) of the air guide cover (7).
  3. 3. The broad width riding mower according to claim 2, wherein the guide cover (7) is hemispherical, the end face side of the guide cover (7) faces upwards and is connected to the inner top wall of the accommodating cavity (31), the spherical side of the guide cover (7) faces downwards, the air inlet (71) is formed in the upper side of the guide cover (7), and the air outlet (72) is strip-shaped and formed in the side, facing the discharge opening (32), of the guide cover (7).
  4. 4. A broad width riding mower according to any one of claims 1-3, wherein the housing cavity (31) is provided with sleeves (8) which are sleeved on the outer side of the driving shaft (4) one by one correspondingly, the upper ends of the sleeves (8) are connected to the inner top wall of the housing cavity (31) and the lower ends extend to the lower part of the housing cavity (31), the upper ends of the driving shaft (4) are rotatably connected with the bottom cover (3) through bearings, and the lower ends are rotatably connected with the lower sides of the sleeves (8) through bearings.
  5. 5. The broad width riding mower as claimed in claim 4, wherein the lower end of the driving shaft (4) is connected to the middle of the corresponding cutting blade (41), the two ends of the cutting blade (41) are respectively provided with a blade section (411), and the blade sides of the two blade sections (411) are opposite to each other.
  6. 6. The broad width riding mower of claim 5, wherein the blade back side of the blade section (411) is provided with upwardly curved guide vanes (412).
  7. 7. A broad width riding mower as claimed in claim 1, wherein the rotary drive member (2) comprises a driving wheel (21) and a motor/engine for driving the driving wheel (21) in rotation, the belt (6) being wound around all the driving wheels (42) and tensioning wheel (51) in turn by the driving wheel (21).
  8. 8. The broad width riding mower as claimed in claim 1 or 7, wherein the diameter of the tensioning wheel (51) is smaller than the diameter of the driving wheel (42).
  9. 9. The broad width riding mower of claim 1, wherein the drive shafts (4) are three, with the middle drive shaft (4) being forward of the left and right drive shafts (4).

Description

Wide riding mower Technical Field The invention relates to the technical field of mowers, in particular to a wide riding mower. Background Riding mower is generally used as an efficient garden maintenance device in a scene such as a garden, a municipal green space, a large lawn, etc. where a large-area work is required. The main structure of the riding mower comprises a vehicle body for an operator to drive and a bottom cover arranged at the bottom of the vehicle body. The bottom cover is internally provided with a containing cavity with a downward opening, and a plurality of cutting blades are arranged in the containing cavity along the width direction of the vehicle body. When mowing operation is performed, an operator drives the vehicle body to advance, forage higher than the cutting blade is cut off by the cutting blade rotating at a high speed, and moves towards a discharge hole arranged on one side of the bottom cover under the action of centrifugal air flow generated by rotation of the cutting blade, and finally is discharged to a grass collecting device through the discharge hole or directly spread on the lawn surface. The "swath" of a riding mower, also referred to as the "cutting width", refers to the total transverse width of all cutterheads that are available for cutting in a single operation of the mower. Because riding mowers tend to have a large work area, the efficiency of mowing is highly desirable. To improve the efficiency of the operation, it is common practice to increase the width of the mower, i.e. by increasing the size of the cutting blades, increasing the spacing between adjacent blades, or directly increasing the number of cutting blades. However, as the number of cutting blades increases, as well as the size of the individual blades and the spacing between the blades, the distance that the forage moves from the position being cut to the discharge opening increases accordingly. During this process, the air flow generated by the rotation of the cutting blade itself can be significantly diffused and attenuated in the spaced area between adjacent blades, resulting in a significant shortage of air flow pushing force in that area. This results in a lack of sufficiently strong and directional air flow to continue pushing the fodder towards the discharge opening when it is cut, affecting the efficiency of the mower and the fodder collection effect. Disclosure of Invention The invention aims to solve the problems that in the prior art, air flow generated by a cutting blade of a mower can be diffused and weakened in a spacing area, so that pushing force is insufficient, and cut forage cannot be timely and smoothly discharged to a discharge hole. In order to solve the above problems, the present invention provides a wide riding mower, comprising: A vehicle body in which a rotation driving member is incorporated; The bottom cover is arranged at the bottom of the vehicle body and is provided with a containing cavity with a downward opening, and a discharge hole is arranged at the left side or the right side of the containing cavity; The driving shafts are rotationally connected to the bottom cover by taking the vertical direction as an axis, at least two driving shafts are distributed at intervals along the left-right direction, the upper ends of the driving shafts are provided with driving wheels, the lower ends of the driving shafts extend to the lower part of the accommodating cavity, and the lower ends of the driving shafts are provided with cutting blades; at least one intermediate shaft is arranged between any two adjacent driving shafts, the intermediate shaft is rotationally connected with the bottom cover by taking the vertical direction as an axis, and the intermediate shaft is provided with a tensioning wheel with equal height relative to the driving wheel and an impeller positioned below the tensioning wheel; an annular driving belt sequentially winds all the driving wheels and the tensioning wheels from the output end of the rotary driving piece; the air inlet is communicated with the lower part of the impeller, the air outlet is arranged at the position, between the adjacent driving shafts, of the accommodating cavity, and the impeller drives air to be blown to the discharge port through the air guide cover through rotation. Compared with the prior art, the scheme is characterized in that the intermediate shaft is additionally arranged between the adjacent driving shafts, the tension pulley on the intermediate shaft can tension the driving belt between the adjacent driving wheels, so that better power transmission of the driving belt to the driving wheel is realized, the tension pulley can rotate under the action of the driving belt, the intermediate shaft and the impeller are further rotated, the impeller can drive gas to blow to the discharge opening through the guide cover through rotation, and therefore forage at the position between the adjacent driving shafts is blown to t