Hobbing cutter type mower with double speed regulation function

Abstract

The invention discloses a hob type mower with a double-speed regulation function. A power part of the hob type mower is provided with a two-gear speed regulation structure and has an emergency escape function. When the density is greatly increased and the resistance of the hob mechanism is greatly increased, the current is increased accordingly, the controller controls the reciprocating swing mechanism to swing rapidly according to the increase of the current, and the reciprocating swing mechanism drives a second ratchet wheel assembly to rotate back and forth in a second wheel disc through a rack during swing; and the second ratchet wheel assembly continuously achieves tooth skipping and reversely rotates after tooth skipping, so that the driving force and the speed of a second wheel disc are increased, the situation that the resistance is increased is dealt with, when the situation of jamming occurs, all motors are stopped through a controller, powerful escape is conducted through a rotating cylinder, and after escape is finished, the second ratchet wheel assembly is driven to rotate. And continuously switching to the motor driving mode.

Description

Technical Field

[0001] The present invention relates to the field of intelligent agricultural power machinery, and particularly to a hob-type mower with a dual speed regulation function. Background Art

[0002] ‌The crawler-type mower drives the cutter head to rotate through a gasoline engine or an electric motor for mowing. At present, the crawler-type mowers on the market are flexible in walking, have strong passability, and can be equipped with a remote controller for control.

[0003] However, in the actual use process, due to the different densities of the grasslands and the existence of weeds or miscellaneous trees in some grasslands, and the stems of the weeds or miscellaneous trees are relatively thick and generally exist in groups. In this case, when the mower is working, its load is affected by the grassland density, weeds or miscellaneous trees. The existing technology usually uses a single motor drive for mowing, and its speed is only achieved through the rotation speed of the motor. And the maximum power of the motor is certain. When encountering the situation of increased load, it is often impossible to adjust the speed and increase the output torque to adapt, which will cause the cutter to be stuck and the current of the circuit to increase, burning out the motor. In summary, it is urgent to design a power system that can adjust the speed and increase the output torque to cope with the situation of increased load. Summary of the Invention

[0004] Based on the deficiency that in the prior art, when the mower is mowing, it is unable to increase the torque output while increasing the speed when encountering the situation of increased density, weeds, or miscellaneous trees, which is likely to cause jamming and burning out the motor, the present invention provides a hob-type mower with a dual speed regulation function.

[0005] The technical solution adopted by the present invention to solve the above technical problems is as follows: A hob-type mower with a dual speed regulation function, comprising: A frame mechanism, which is used to support and install the mower components; A traveling mechanism, which is arranged on the frame mechanism and is used for traveling; A hob mechanism, which is rotatably arranged on the front side of the frame mechanism and is used for mowing; It further includes a hob drive mechanism, and the hob drive mechanism includes: A rotating shaft, which is rotatably arranged on the frame mechanism; A first wheel disc, which is fixed to one end of the rotating shaft and has a ratchet groove at its end; A first ratchet assembly, whose output end is arranged in the ratchet groove and is rotationally matched with the rotating shaft, and it drives the first wheel disc to rotate counterclockwise through the rotation of a rotating cylinder; A hydraulic station, which is used to provide a power source for the rotating cylinder; A second wheel disc, which is fixed to the other end of the rotating shaft and has ratchet grooves at both ends; A second ratchet assembly, the output end of which is disposed in a ratchet groove on one side of the second wheel disc and rotatably engaged with the rotating shaft, and the output end of which has a first gear; A speed regulating mechanism comprising a double-layer gear and a reciprocating swing mechanism, wherein the reciprocating swing mechanism swings back and forth about a rotating shaft and has an arc-shaped rack thereon, the rack meshing with one layer of the double-layer gear, and the other layer of the double-layer gear meshing with the first gear; A third ratchet assembly, the output end of which is disposed in the ratchet groove on the other side of the second wheel disc and is rotatably engaged with the rotating shaft, and the output end of which has a second gear; a driving motor, which is in transmission connection with the second gear to drive the second wheel to rotate counterclockwise; The transmission mechanism has one end of the rotating shaft passing through the second wheel disc and is connected to the hob mechanism through the transmission mechanism.

[0006] Preferably, the reciprocating swing mechanism includes a first motor, a turntable arranged at the output end of the first motor, a first connecting rod rotatably arranged at an eccentric position of the turntable, and a second connecting rod rotatably connected to the first connecting rod, the second connecting rod is rotatably arranged on a rotating shaft and a rack is arranged on the second connecting rod.

[0007] Preferably, the ratchet grooves include a circular groove and a ratchet groove arranged on the side wall of the groove, and the first ratchet assembly, the second ratchet assembly and the third ratchet assembly all include a rotating plate and a pawl arranged at both ends of the rotating disk and reset by a torsion spring, and the pawl extends into the ratchet groove.

[0008] Preferably, a set of walking mechanisms are provided at the front and rear, and each set includes a driving wheel, a tensioning frame provided on the frame mechanism, a tensioning wheel provided on the tensioning frame, and a track provided on the driving wheel and the tensioning wheel, wherein the two driving wheels are respectively provided on the first wheel disc and the second wheel disc.

[0009] Preferably, the frame mechanism comprises a first mounting shaft and a second mounting shaft located at the front and rear sides respectively, and the tensioning frame comprises: a rear mounting plate disposed on the second mounting shaft; A rotating frame, the middle of which is rotatably mounted on the rear mounting plate, with a tensioning wheel provided on each side; A first swing frame, one end of which is rotatably connected to the first mounting shaft, and the other end of which has an upper fork and a lower fork; A second swing frame, one end of which is rotatably connected to the second mounting shaft, and the other end of which has an upper fork and a lower fork, and the middle portion of which is rotatably engaged with the middle portion of the first swing frame, a shock absorber is provided between the two upper forks, and a front mounting plate is rotatably provided on the two lower forks, and a tensioning wheel is provided on both sides of the front mounting plate; The wheel axle is arranged on the upper side of the frame mechanism and has a tensioning wheel at its end.

[0010] Preferably, the roller mechanism includes two mounting plates arranged on the first mounting shaft and rollers rotatably arranged on the two mounting plates, a circular cutter disc arranged on the roller, and a plurality of rollers arranged on the cutter disc and distributed in a circular array, one end of the roller passes through the mounting plate and is connected to the rotating shaft through a transmission mechanism.

[0011] Preferably, the rotary cylinder and the drive motor are arranged on one of the mounting bracket plates, and the output end of the drive motor is connected to the second gear through a gear meshing.

[0012] Preferably, the first motor is fixed to the first mounting shaft via a mounting base.

[0013] Preferably, two support plates are provided on the first mounting shaft, and the rotating shaft is rotatably arranged on the support plates through bearings.

[0014] Preferably, the frame mechanism has two vertical plates located between the two side tracks, the two vertical plates are spaced apart and have arc tops on their tops, a hydraulic station is provided in the gap between the two vertical plates and the arc tops of the two bottom plates are used to install top covers.

[0015] Compared with the prior art, the advantages of the present invention are as follows: when the density increases significantly, resulting in a significant increase in the resistance of the hob mechanism, the current will increase accordingly, and the controller controls the reciprocating swing mechanism to swing rapidly according to the increase in the current. When it swings, the rack drives the second ratchet assembly to rotate back and forth in the second wheel, so that the second ratchet assembly continuously jumps teeth and rotates in the opposite direction after jumping teeth, thereby increasing the driving force for the second wheel and also increasing the speed, so as to cope with the situation of increased resistance. When a jam occurs, the controller stops each motor and uses the rotating cylinder to force it out of trouble. After the escape is completed, it continues to switch to the motor drive mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 以下将结合附图和优选实施例来对本发明进行进一步详细描述,但是本领域技术人员将领会的是,这些附图仅是出于解释优选实施例的目的而绘制的,并且因此不应当作为对本发明范围的限制。 Furthermore, unless otherwise specified, the drawings only represent conceptually the composition or construction of the described object and may include exaggerated displays, and the drawings are not necessarily drawn to scale.

[0017] Figure 1 A side view of the present application; Figure 2 and 3 A perspective view of this application; Figure 4 This is a schematic diagram of the structure of the driving wheel and frame mechanism of this application; Figure 5Schematic structural diagram of the hob driving mechanism and the frame mechanism of the present application; Figure 6 Schematic structural diagram of the hob driving mechanism and the hob mechanism of the present application; Figures 7-9 All are three-dimensional diagrams of the hob driving mechanism of the present application; In the figure: 01, tension pulley; 02, driving wheel; 03, first swing frame; 031, lower fork; 032, front mounting plate; 04, frame mechanism; 041, first mounting shaft rod; 0411, mounting frame plate; 0412, support plate; 042, second mounting shaft rod; 05, second swing frame; 06, upper fork; 07, shock absorber; 08, rear mounting plate; 081, rotating frame; 09, crawler; 010, axle; 10, hob mechanism; 100, roller shaft; 101, circular cutter head; 102, hob; 20, hydraulic station; 30, traveling mechanism; 40, hob driving mechanism; 401, first ratchet assembly; 4010, first wheel disc; 4011, rotating cylinder; 402, second ratchet assembly; 4020, second wheel disc; 4021, first gear; 4022, reciprocating swing mechanism; 40221, first motor; 40222, turntable; 40223, first connecting rod; 40224, second connecting rod; 40225, rack; 40226, double-layer gear; 403, third ratchet assembly; 4031, driving motor; 4032, gear; 4033, second gear; 404, groove; 405, ratchet groove; 406, rotating plate; 407, ratchet pawl; 001, rotating shaft; 50, transmission mechanism. Detailed implementation manners

[0018] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are only descriptive and exemplary, and should not be construed as limiting the protection scope of the present invention.

[0019] It should be noted that similar reference numerals denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it may not be further defined and explained in subsequent drawings. Embodiment

[0020] This embodiment mainly elaborates on the title of a hob-type lawn mower with a dual speed regulation function, specifically as follows: A hob-type lawn mower with a dual speed regulation function, as Figures 1-9 shown, includes: A frame mechanism 04, which is used to support and install lawn mower components; A traveling mechanism 30, which is arranged on the frame mechanism 04 and is used for traveling; A hob mechanism 10, which is rotatably arranged on the front side of the frame mechanism 04 and is used for mowing grass; Also included is a hob drive mechanism 40, which includes: The rotating shaft 001 is rotatably mounted on the frame mechanism 04; The first wheel 4010 is fixed to one end of the rotating shaft 001 and has a ratchet groove at its end; The first ratchet assembly 401 has an output end disposed in the ratchet groove and rotatably engaged with the rotating shaft 001 and is driven to rotate by the rotating cylinder 4011 to drive the first wheel 4010 to rotate counterclockwise; The hydraulic station 20 is used to provide a power source for the rotary cylinder 4011; The second wheel 4020 is fixed to the other end of the rotating shaft 001 and has ratchet grooves at both ends; The second ratchet assembly 402 has an output end disposed in a ratchet groove on one side of the second wheel disc 4020 and rotatably engaged with the rotating shaft 001, and has a first gear 4021 at its output end; The speed regulating mechanism includes a double-layer gear 40226 and a reciprocating swing mechanism 4022. The reciprocating swing mechanism 4022 swings back and forth about the rotation axis 001 and has an arc-shaped rack 40225 thereon. The rack 40225 meshes with one gear layer of the double-layer gear 40226. The other gear layer of the double-layer gear 40226 meshes with the first gear 4021. The third ratchet assembly 403 has an output end disposed in the ratchet groove on the other side of the second wheel disc 4020 and rotatably engaged with the rotating shaft 001, and has a second gear 4033 at its output end; The driving motor 4031 is in driving connection with the second gear 4033 to drive the second wheel 4020 to rotate counterclockwise; The transmission mechanism 50, one end of the rotating shaft 001 passes through the second wheel disc 4020 and is connected to the hob mechanism 10 through the transmission mechanism 50. The transmission mechanism 50 is a combination of a sprocket and a chain or a pulley and a synchronous belt. In addition, if the hob mechanism 10 needs to rotate clockwise, a gear set can be set on the rotating shaft 001 and the mounting frame plate 0411 to change the rotation direction and then drive the hob mechanism 10 to rotate through the transmission mechanism 50. This solution needs to be controlled in conjunction with a controller. When the density increases significantly, resulting in a significant increase in the resistance of the hob mechanism 10, the current will increase accordingly. The controller controls the reciprocating swing mechanism 4022 to swing rapidly according to the increase in the current. When it swings, it drives the second ratchet assembly 402 to rotate back and forth in the second wheel disc 4020 through the rack 40225, so that the second ratchet assembly 402 continuously jumps teeth and rotates in the opposite direction after jumping teeth, thereby increasing the driving force for the second wheel disc 4020 and also increasing the speed - increasing the speed requires that the second ratchet assembly 402 and the first ratchet assembly 401 driving the second wheel disc 4020 have a difference in rotation speed, so as to cope with the situation where the resistance increases. When a jam occurs, the controller controls the rotating cylinder 4011 to forcefully escape. The two motors can be stopped during the escape process. After the escape is completed, it continues to switch to the motor drive mode.

[0021] Preferably, the reciprocating swing mechanism 4022 includes a first motor 40221, a turntable 40222 arranged at the output end of the first motor 40221, a first connecting rod 40223 rotatably arranged at an eccentric position of the turntable 40222, and a second connecting rod 40224 rotatably connected to the first connecting rod 40223, the second connecting rod 40224 is rotatably arranged on the rotating shaft 001 and the rack 40225 is arranged on the second connecting rod 40224.

[0022] Preferably, the ratchet grooves each include a circular groove 404 and a ratchet groove 405 provided on the sidewall of the groove 404. The first ratchet assembly 401, the second ratchet assembly 402, and the third ratchet assembly 403 each include a rotating plate 406 and pawls 407 provided at both ends of the rotating plate 406 and reset by a torsion spring. The pawls 407 extend into the ratchet groove 405. The rotating plate 406 and the pawl 407 are the respective output ends, and the first gear 4021 and the second gear 4033 are respectively provided on their respective rotating plates 406.

[0023] Preferably, a set of walking mechanism 30 is provided at the front and rear, and each set includes a driving wheel 02, a tensioning frame provided on the frame mechanism 04, a tensioning wheel 01 provided on the tensioning frame, and a track 09 mounted on the driving wheel 02 and the tensioning wheel 01, wherein the two driving wheels 02 are respectively provided on the first wheel disc 4010 and the second wheel disc 4020.

[0024] Preferably, the frame mechanism 04 includes a first mounting shaft rod 041 and a second mounting shaft rod 042 located at the front side and the rear side respectively. The tensioning frame includes: A rear mounting plate 08 which is arranged on the second mounting shaft rod 042; A rotating frame 081, the middle part of which is rotatably arranged on the rear mounting plate 08, and a tensioning wheel 01 is arranged on each side thereof; A first swing frame 03, one end of which is rotatably connected to the first mounting shaft rod 041, and the other end thereof has an upper fork 06 and a lower fork 031; A second swing frame 05, one end of which is rotatably connected to the second mounting shaft rod 042, and the other end thereof has an upper fork 06 and a lower fork 031, and the middle part thereof is rotatably matched with the middle part of the first swing frame 03. A shock absorber 07 is arranged between the two upper forks 06. A front mounting plate 032 is rotatably arranged on the two lower forks 031, and a tensioning wheel 01 is arranged on each side of the front mounting plate 032; A wheel shaft 010 which is arranged on the upper side of the frame mechanism 04 and a tensioning wheel 01 is arranged at the end thereof.

[0025] Preferably, the hob mechanism 10 includes two mounting frame plates 0411 arranged on the first mounting shaft rod 041, a roller shaft 100 rotatably arranged on the two mounting frame plates 0411, a circular cutter head 101 arranged on the roller shaft 100, and a plurality of hobs 102 arranged on the cutter head 101 and distributed in a circular array. One end of the roller shaft 100 penetrates through the mounting frame plate 0411 and is in transmission connection with the rotating shaft 001 through a transmission mechanism 50.

[0026] Preferably, the rotary cylinder 4011 and the driving motor 4031 are arranged on one of the mounting frame plates 0411, and the output end of the driving motor 4031 is in transmission connection through meshing with a second gear 4033 by a gear 4032.

[0027] Preferably, the first motor 40221 is fixed to the first mounting shaft rod 041 through a mounting seat.

[0028] Preferably, two support plates 0412 are arranged on the first mounting shaft rod 041, and the rotating shaft 001 is rotatably arranged on the support plates 0412 through bearings.

[0029] Preferably, the frame mechanism 04 has two vertical plates located between the two crawler belts 09 on both sides. The two vertical plates are arranged at intervals and an arc top is arranged at the top thereof. A hydraulic station 20 is arranged at the gap between the two vertical plates, and the arc tops of the two bottom plates are used for installing a top cover.

[0030] It should be noted that the hydraulic station is driven by a power supply to maintain the required pressure. The double-layer gear 40226 is rotatably arranged on one of the support plates 0412; all the ratchet mechanisms for driving the rotating shaft 001 to rotate drive the rotating shaft 001 to rotate counterclockwise, and this counterclockwise rotation is based on the front view perspective.

[0031] The above has introduced in detail the title of the hob mower with dual speed regulation function provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the present invention and its core idea. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A hob-type lawn mower with a dual speed regulation function, comprising: A frame mechanism for supporting and installing lawn mower components; A traveling mechanism disposed on the frame mechanism for traveling; A hob mechanism rotatably disposed on the front side of the frame mechanism for mowing grass; Characterized in that it further comprises a hob drive mechanism, and the hob drive mechanism includes: A rotating shaft rotatably disposed on the frame mechanism; A first disc fixed to one end of the rotating shaft and having a ratchet groove at its end; A first ratchet assembly, the output end of which is disposed in the ratchet groove and is rotationally engaged with the rotating shaft, and is driven to rotate by a rotating cylinder to drive the first disc to rotate counterclockwise; A hydraulic station for providing a power source for the rotating cylinder; A second disc fixed to the other end of the rotating shaft, and having ratchet grooves at both ends thereof; A second ratchet assembly, the output end of which is disposed in the ratchet groove on one side of the second disc and is rotationally engaged with the rotating shaft, and the output end has a first gear; A speed regulation mechanism including a double-layer gear and a reciprocating swing mechanism. The reciprocating swing mechanism reciprocally swings around the rotating shaft and has an arc-shaped rack thereon. The rack is engaged with one layer of the gears of the double-layer gear, and the other layer of the gears of the double-layer gear is engaged with the first gear; A third ratchet assembly, the output end of which is disposed in the ratchet groove on the other side of the second disc and is rotationally engaged with the rotating shaft, and the output end has a second gear; A drive motor drivingly connected to the second gear to drive the second disc to rotate counterclockwise; A transmission mechanism, one end of the rotating shaft penetrates through the second disc and is drivingly connected to the hob mechanism through the transmission mechanism.

2. The hob mower with dual speed regulation function according to claim 1, characterized in that, The reciprocating swing mechanism includes a first motor, a turntable disposed at the output end of the first motor, a first connecting rod rotatably disposed at an eccentric position of the turntable, and a second connecting rod rotatably connected to the first connecting rod. The second connecting rod is rotatably disposed on the rotating shaft and the rack is disposed on the second connecting rod.

3. The hob-type lawn mower with a dual speed regulation function according to claim 1, characterized in that, The ratchet grooves all include a circular groove and a ratchet groove disposed on the side wall of the groove. The first ratchet assembly, the second ratchet assembly and the third ratchet assembly all include a rotating plate and ratchet claws disposed at both ends of the rotating disc and reset by torsion springs. The ratchet claws extend into the ratchet grooves.

4. The hob-type mower with a dual speed regulation function according to claim 1, characterized in that, One set of traveling mechanisms is provided at the front and the rear respectively, and each traveling mechanism includes a driving wheel, a tensioning frame disposed on the frame mechanism, a tensioning wheel disposed on the tensioning frame, and a crawler sleeved on the driving wheel and the tensioning wheel. Two of the driving wheels are respectively disposed on the first disc and the second disc.

5. The hob-type lawn mower with a dual speed regulation function according to claim 4, characterized in that, The frame mechanism includes a first mounting shaft rod and a second mounting shaft rod located at the front side and the rear side respectively. The tensioning frame includes: A rear mounting plate disposed on the second mounting shaft rod; A rotating frame, the middle part of which is rotatably disposed on the rear mounting plate, and each side thereof is provided with a tensioning wheel; A first swing frame, one end of which is rotatably connected to the first mounting shaft rod, and the other end has an upper fork and a lower fork; A second swing frame, one end of which is rotatably connected to the second mounting shaft rod, and the other end has an upper fork and a lower fork, and the middle part thereof is rotationally engaged with the middle part of the first swing frame. A shock absorber is provided between the two upper forks, and a front mounting plate is rotatably disposed on the two lower forks, and a tensioning wheel is provided on each side of the front mounting plate; A wheel shaft disposed on the upper side of the frame mechanism and having a tensioning wheel at its end.

6. The hob-type mower with a dual speed regulation function according to claim 5, characterized in that, The roller cutter mechanism includes two mounting plates arranged on the first mounting shaft, a roller rotatably arranged on the two mounting plates, a circular cutter disc arranged on the roller, and a plurality of roller cutters arranged on the cutter disc and distributed in a circular array. One end of the roller passes through the mounting plate and is connected to the rotating shaft through a transmission mechanism.

7. The hob-type lawn mower with a dual speed regulation function according to claim 6, characterized in that, The rotary cylinder and the driving motor are arranged on one of the mounting bracket plates, and the output end of the driving motor is connected to the second gear through meshing of the gear.

8. The hob-type mower with a dual speed regulation function according to claim 5, characterized in that, The first motor is fixed on the first mounting shaft through a mounting seat.

9. The hob-type lawn mower with a dual speed regulation function according to claim 5, characterized in that, Two supporting plates are arranged on the first mounting shaft, and the rotating shaft is rotatably arranged on the supporting plates through bearings.

10. The hob-type mower with a dual speed regulation function according to claim 1, characterized in that, The frame mechanism has two vertical plates located between the crawlers on both sides. The two vertical plates are spaced apart and have arc tops on their tops. A hydraulic station is provided in the gap between the two vertical plates, and the arc tops of the two bottom plates are used to install top covers.

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