Lawn mower transmission Lawn mower transmission

Abstract

The utility model relates to a mower transmission device, and the mower transmission device includes front axle transmission structure, rear axle transmission structure, driving pulley, passive pulley A, transmission belt A, horizontal shaft A, universal joint coupling A, passive pulley B, transmission belt B, hydraulic walking device, universal joint coupling B, passive pulley A is connected with driving pulley through transmission belt A, passive pulley B is connected with driving pulley through transmission belt B, passive pulley B is connected with the input end of hydraulic walking device, hydraulic walking device has two output ends, one output end is connected with rear axle transmission structure, and the other output end is connected with front axle transmission structure through universal joint coupling B, the utility model makes mower cutter head rotation, frame movement share power source, reduces the overall weight of mower, reduces the energy consumption of mower.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of mower, in particular to a mower transmission device. BACKGROUND

[0002] Mower refers to the machine used for trimming lawn. The current mower style is generally divided into two kinds, handheld mower and riding mower. The handheld mower mainly relies on human power to move, so the mowing efficiency is low and the labor burden is large. The riding mower usually sets up a four-wheel frame. The four-wheel frame can be driven to move. A liftable cutter head is arranged at the bottom of the four-wheel frame to trim the lawn during the movement of the frame. The riding mower of the prior art sets up two power sources. One power source drives the four-wheel frame to move. The other power source drives the cutter head to rotate. Generally, the power source driving the four-wheel frame to move is an engine. The power source driving the cutter head to rotate is an electric motor. The two power sources are also matched with corresponding storage batteries. Therefore, the two power sources increase the overall weight of the four-wheel frame and the overall energy consumption of the mower. SUMMARY

[0003] The utility model aims at solving the above-mentioned problem and provides a mower transmission device.

[0004] The technical scheme of the utility model is: a mower transmission device comprises a front axle transmission structure, a rear axle transmission structure, a driving pulley, a driven pulley A, a transmission belt A, a horizontal shaft A, a universal joint coupling A, a driven pulley B, a transmission belt B, a hydraulic walking device and a universal joint coupling B. The front axle transmission structure is used for outputting torque to the front wheels on both sides of the frame. The driving pulley is drivingly connected with the power source of the mower to obtain power torque. The driven pulley A is connected with the driving pulley through the transmission belt A to obtain a certain power torque. The horizontal shaft A is rotationally connected with the frame of the mower. One end of the horizontal shaft A is coaxially fixedly connected with the driven pulley A. The other end of the horizontal shaft A is drivingly connected with the cutter head of the mower through the universal joint coupling A. The power torque obtained by the driven pulley A is output to the cutter head of the mower through the horizontal shaft A and the universal joint coupling A to drive the cutter head to rotate. The universal joint coupling A can compensate the axis offset between the horizontal shaft A and the cutter head. The driven pulley B is connected with the driving pulley through the transmission belt B to obtain a certain power torque. The driven pulley B is connected with the input end of the hydraulic walking device to transmit the power torque to the hydraulic walking device. The hydraulic walking device has two output ends. One output end is connected with the rear axle transmission structure to drive the rear axle transmission structure to work. The other output end is connected with the front axle transmission structure through the universal joint coupling B to drive the front axle transmission structure to work. The hydraulic walking device, also known as HST (hydrostatic transmission), is a whole type hydraulic stepless speed change device. It can be directly connected in the power transmission chain of the chassis running system to realize stepless speed change and is widely used in engineering machinery and agricultural machinery.

[0005] Preferably, the cutter head of the mower is a lifting cutter head capable of lifting and lowering; the universal joint coupling A is a multi-section telescopic anti-disengagement universal joint coupling capable of certain axial telescoping to adapt to the lifting of the cutter head; the multi-section telescopic anti-disengagement universal joint coupling is a mature technology, and the multi-section telescopic anti-disengagement universal joint coupling with the authorization announcement number CN222163293U is a kind of universal joint coupling that can not only transmit torque but also axially telescopic.

[0006] Preferably, the transmission device of the mower further comprises a right-angle reducer; the right-angle reducer is arranged at the top of the cutter head; the input end of the right-angle reducer is connected with the end of the universal joint coupling A; the output end of the right-angle reducer is connected with the cutter head; the right-angle reducer can change the transmission direction, so that the torque output by the universal joint coupling B is better transmitted to the cutter head.

[0007] Preferably, the input end of the hydraulic walking device is arranged horizontally and rearward; a fan is coaxially and fixedly connected to the outer end of the input end of the hydraulic walking device; when the input end of the hydraulic walking device rotates, the fan also rotates to dissipate heat for the hydraulic walking device.

[0008] Further, the transmission device of the mower further comprises a horizontal shaft B and a universal joint coupling C; the horizontal shaft B is rotatably connected with the middle part of the mower frame; the rear end of the horizontal shaft B is connected with the universal joint coupling B; the front end of the horizontal shaft B is connected with the front axle transmission structure through the universal joint coupling C; the horizontal shaft B and the universal joint coupling C cooperate with each other to fold the transmission chain from the hydraulic walking device to the front axle transmission structure upward, so as to avoid interference with the lifting cutter head.

[0009] Further, the transmission device of the mower further comprises a horizontal sleeve; the horizontal sleeve is fixedly connected with the middle part of the mower frame; the horizontal shaft B is rotatably connected with the horizontal sleeve; the horizontal sleeve supports the horizontal shaft B to improve the stability of the horizontal shaft B when rotating.

[0010] Further, the transmission device of the mower further comprises a vertical bearing B; the vertical bearing B is sleeved in the horizontal sleeve; the circumferential side surface of the horizontal shaft B is connected with the inner ring of the vertical bearing B; the vertical bearing B can reduce the rotating resistance of the horizontal shaft B.

[0011] Preferably, the driving pulley, the driven pulley A, the transmission belt A, the driven pulley B and the transmission belt B are vertically arranged; in this way, the transmission belt A and the transmission belt B are stably clamped into the corresponding wheel grooves of the driving pulley, the driven pulley A and the driven pulley B; when transmitting, the transmission belt A and the transmission belt B are less worn.

[0012] Preferably, the transmission device of the mower further comprises two vertical bearings A; the vertical bearings A are installed at both ends of the horizontal shaft A; the vertical bearings A can reduce the rotating resistance of the horizontal shaft A.

[0013] The mower transmission device has the following advantages.

[0014] (1) The utility model provides a set of transmission device, makes the cutter head rotation and frame movement of mower can share same power source, thereby effectively reduces the overall load of mower, reduces the energy consumption of mower, and the transmission chain of driving cutter head rotation, the transmission chain of driving frame movement are independent, are favorable to the maintenance of two transmission chains respectively, when cutter head fails, the whole frame cannot be driven to move.

[0015] (2) The active pulley, passive pulley A, transmission belt A, passive pulley B and transmission belt B are vertically arranged, so that the transmission belt A and the transmission belt B are stably clamped into the corresponding wheel grooves of the active pulley, the passive pulley A and the passive pulley B, and the transmission belt A and the transmission belt B are less worn during transmission. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the installation schematic view of the mower transmission device of the utility model;

[0017] Figure 2 is Figure 1 the I enlarged view;

[0018] Figure 3 is Figure 1 the side view;

[0019] Figure 4 is Figure 3 the A-A sectional view;

[0020] Figure 5 is Figure 4 the B-B sectional view;

[0021] Figure 6 is Figure 4 the C-C sectional view;

[0022] In the drawing: 00. frame, 01. power source, 02. cutter head,

[0023] 1. front axle transmission structure, 2. rear axle transmission structure, 3. active pulley, 4. passive pulley A, 5. transmission belt A, 6. horizontal shaft A, 7. universal joint coupling A, 8. passive pulley B, 9. transmission belt B, 10. hydraulic walking device, 11. universal joint coupling B, 12. right-angle speed reducer, 13. fan, 14. horizontal shaft B, 15. universal joint coupling C, 16. horizontal sleeve, 17. vertical bearing B, 18. vertical bearing A. DETAILED DESCRIPTION

[0024] Example one: refer to Figures 1-6The mowing machine transmission device comprises a front axle transmission structure 1, a rear axle transmission structure 2, a driving pulley 3, a driven pulley A 4, a transmission belt A 5, a horizontal shaft A 6, a universal joint coupling A 7, a driven pulley B 8, a transmission belt B 9, a hydraulic walking device 10, a universal joint coupling B 11, the front axle transmission structure 1 is used for outputting torque to the front wheels on both sides of the vehicle frame 00, the front axle transmission structure 1 is used for outputting torque to the front wheels on both sides of the vehicle frame 00, the driving pulley 3 is drivingly connected with a power source 01 of the mowing machine, and power torque is obtained, the driven pulley A 4 is connected with the driving pulley 3 through the transmission belt A 5, so that certain power torque is obtained, the horizontal shaft A 6 is rotationally connected with the vehicle frame 00 of the mowing machine, one end is coaxially fixedly connected with the driven pulley A 4, and the other end is drivingly connected with a cutter head 02 of the mowing machine through the universal joint coupling A 7, the power torque obtained by the driven pulley A 4 is output to the cutter head 02 of the mowing machine through the horizontal shaft A 6 and the universal joint coupling A 7, and the cutter head 02 is driven to rotate, the universal joint coupling A 7 can compensate the axis offset between the horizontal shaft A 6 and the cutter head 02, the driven pulley B 8 is connected with the driving pulley 3 through the transmission belt B 9, so that certain power torque is obtained, the driven pulley B 8 is connected with the input end of the hydraulic walking device 10, and the power torque is transmitted to the hydraulic walking device 10, the hydraulic walking device 10 has two output ends, one output end is connected with the rear axle transmission structure 2, so that the rear axle transmission structure 2 is driven to work, and the other output end is connected with the front axle transmission structure 1 through the universal joint coupling B 11, so that the front axle transmission structure 1 is driven to work.

[0025] Compared with the prior art, the utility model provides a set of transmission device, makes the cutter head 02 of mowing machine can rotate and the vehicle frame 00 can move can share same power source 01, thereby effectively reduces the overall load of mowing machine, reduces the energy consumption of mowing machine, and the transmission chain of driving the cutter head 02 to rotate and the transmission chain of driving the vehicle frame 00 to move are independent of each other, are favorable to the maintenance of two transmission chains respectively, and when the cutter head 02 fails, the whole vehicle frame 00 cannot be driven to move.

[0026] The engine is used as the power source 01 in the embodiment, the engine is installed at the rear end of the mowing machine, and the output end of the engine is coaxially fixedly connected with the driving pulley 3.

[0027] The cutter head 02 of the lawnmower is a lifting cutter head 02, which can be raised and lowered; the universal joint coupling A7 is a multi-section telescopic anti-detachment universal joint coupling, which can perform a certain axial extension and contraction to adapt to the raising and lowering of the cutter head 02; this multi-section telescopic anti-detachment universal joint coupling is an existing mature technology. The utility model patent multi-section telescopic anti-detachment universal joint coupling with authorization announcement number CN222163293U is a universal joint coupling that can transmit torque and perform axial extension and contraction.

[0028] The lawnmower transmission device also includes a right-angle reducer 12; the right-angle reducer 12 is located on top of the cutter head 02; the input end of the right-angle reducer 12 is connected to the end of the universal joint coupling A 7; the output end of the right-angle reducer 12 is connected to the cutter head 02; the right-angle reducer 12 can change the transmission direction, so that the torque output by the universal joint coupling B 11 can be better transmitted to the cutter head 02.

[0029] The input end of the hydraulic walker 10 is horizontally arranged facing backward; a fan 13 is coaxially fixed to the outer end of the input end of the hydraulic walker 10; when the input end of the hydraulic walker 10 rotates, the fan 13 also rotates to dissipate heat from the hydraulic walker 10.

[0030] The lawnmower transmission device also includes a horizontal shaft B14 and a universal joint coupling C15; the horizontal shaft B14 is rotatably connected to the middle of the lawnmower frame; the rear end of the horizontal shaft B14 is connected to the universal joint coupling B11; the front end of the horizontal shaft B14 is connected to the front axle transmission structure 1 through the universal joint coupling C15; the horizontal shaft B14 and the universal joint coupling C15 cooperate to fold the transmission chain from the hydraulic walker 10 to the front axle transmission structure 1 upward to avoid interference with the lifting cutter head 02.

[0031] The lawnmower transmission device also includes a horizontal sleeve 16; the horizontal sleeve 16 is fixedly connected to the middle of the lawnmower frame; the horizontal shaft B 14 is rotatably connected to the horizontal sleeve 16; the horizontal sleeve 16 supports the horizontal shaft B 14 and improves the stability of the horizontal shaft B 14 when rotating.

[0032] The lawnmower transmission also includes a vertical bearing B17; the vertical bearing B17 is fitted inside the horizontal sleeve 16; the circumferential side of the horizontal shaft B14 is connected to the inner ring of the vertical bearing B17; the vertical bearing B17 can reduce the rotational resistance of the horizontal shaft B14.

[0033] The driving pulley 3, driven pulley A 4, transmission belt A 5, driven pulley B 8, and transmission belt B 9 are all vertically arranged; in this way, transmission belt A 5 and transmission belt B 9 are stably engaged in the corresponding grooves of the driving pulley 3, driven pulley A 4, and driven pulley B 8; during transmission, the wear on transmission belt A 5 and transmission belt B 9 is less.

[0034] The working principle of the embodiment is as follows: the power torque obtained by the passive pulley A 4 from the driving pulley 3 is output to the mower cutterhead 02 through the horizontal shaft A 6 and the universal joint coupling A 7, so as to drive the cutterhead 02 to rotate; the universal joint coupling A 7 can compensate the axis offset between the horizontal shaft A 6 and the cutterhead 02; the passive pulley B 8 obtains the power torque from the driving pulley 3 and delivers it to the hydraulic walking device 10, so as to drive the rear axle transmission structure 2 and the front axle transmission structure 1 to work, and enable the vehicle frame 00 to be driven to move; the driving pulley 3, the passive pulley A 4, the transmission belt A 5, the passive pulley B 8 and the transmission belt B 9 are all vertically arranged; in this way, the transmission belt A 5 and the transmission belt B 9 are stably clamped into the corresponding wheel grooves of the driving pulley 3, the passive pulley A 4 and the passive pulley B 8; during transmission, the transmission belt A 5 and the transmission belt B 9 are less abraded.

[0035] Embodiment two: Embodiment two is basically the same as Embodiment one, and the same parts will not be described again. The difference is that the mower transmission device further comprises two vertical bearings A 18; the vertical bearings A 18 are installed at both ends of the horizontal shaft A 6; the vertical bearings A 18 can reduce the rotation resistance of the horizontal shaft A 6.

Claims

1. A lawnmower transmission device, characterized in that, The system includes a front axle drive structure, a rear axle drive structure, a drive pulley, a driven pulley A, a transmission belt A, a horizontal shaft A, a universal joint coupling A, a driven pulley B, a transmission belt B, a hydraulic drive unit, and a universal joint coupling B. The drive pulley is connected to the power source of the lawnmower. The driven pulley A is connected to the drive pulley via the transmission belt A. The horizontal shaft A is rotatably connected to the lawnmower frame, with one end coaxially fixed to the driven pulley A and the other end connected to the lawnmower's cutter head via the universal joint coupling A. The driven pulley B is connected to the drive pulley via the transmission belt B. The driven pulley B is connected to the input end of the hydraulic drive unit. The hydraulic drive unit has two output ends; one output end is connected to the rear axle drive structure; the other output end is connected to the front axle drive structure via the universal joint coupling B.

2. The lawnmower transmission device according to claim 1, characterized in that: The lawnmower's blade is a lifting blade; the universal joint coupling A is a multi-section telescopic anti-detachment universal joint coupling.

3. The lawnmower transmission device according to claim 1, characterized in that: It also includes a right-angle reducer; the right-angle reducer is located on top of the cutter head; the input end of the right-angle reducer is connected to the end of the universal joint coupling; the output end of the right-angle reducer is connected to the cutter head.

4. The lawnmower transmission device according to claim 1, characterized in that: The input end of the hydraulic walker is horizontally positioned facing backward; a fan is coaxially fixed to the outer end of the input end of the hydraulic walker.

5. The lawnmower transmission device according to claim 2, characterized in that: It also includes horizontal shaft B and universal joint coupling C; horizontal shaft B is rotatably connected to the middle of the lawnmower frame; the rear end of horizontal shaft B is connected to universal joint coupling B; the front end of horizontal shaft B is connected to the front axle drive structure through universal joint coupling C.

6. The lawnmower transmission device according to claim 5, characterized in that: It also includes a horizontal sleeve; the horizontal sleeve is fixedly connected to the middle of the lawnmower frame; and the horizontal shaft B is rotatably connected to the horizontal sleeve.

7. The lawnmower transmission device according to claim 6, characterized in that: It also includes a vertical bearing B; the vertical bearing B is fitted inside a horizontal sleeve; the circumferential side of the horizontal shaft B is connected to the inner ring of the vertical bearing B.

8. The lawnmower transmission device according to claim 1, characterized in that: The driving pulley, driven pulley A, transmission belt A, driven pulley B, and transmission belt B are all vertically arranged.

9. The lawnmower transmission device according to claim 1, characterized in that: It also includes two vertical bearings; these vertical bearings are mounted at both ends of the horizontal shaft.

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