Riding type mower

Abstract

The invention relates to a riding type mower, and belongs to the technical field of mowers. The riding type mower comprises a mowing vehicle frame, a walking mechanism, a cutting mechanism and an operating mechanism for an operator to ride, the mowing vehicle frame comprises a first vehicle frame and a second vehicle frame, and a hinge structure is arranged between the first vehicle frame and the second vehicle frame. The walking mechanism comprises front wheels arranged on the first frame, rear wheels arranged on the second frame and a driving source arranged on the second frame, the cutting mechanism is arranged at the bottom of the front side of the first frame, and the operating mechanism comprises an operating panel used for controlling steering of the front wheels. The operation board and the hinge structure are connected through a transmission amplification structure. The turning flexibility of the mower is improved.

Description

Technical Field

[0001] The present application relates to the technical field of lawn mowers, and in particular to a riding lawn mower. Background Art

[0002] A lawn mower is a highly efficient gardening machine. According to the mode of travel, lawn mowers can be divided into handheld, push-type, ride-on, etc. Among them, ride-on lawn mowers have crawler or wheel drive designs to adapt to different terrains, while providing a comfortable riding experience, and are particularly suitable for efficient mowing operations in large lawns and farms.

[0003] Existing riding lawn mowers generally include a mowing frame, a traveling mechanism for driving the mowing frame, a cutting mechanism disposed on the mowing frame, an engine, etc. The current cutting mechanism is usually arranged in the middle or rear of the mowing frame, so that the mower cannot cut when encountering a narrow gap. However, if the cutting mechanism is arranged at the front side of the mowing frame, it is difficult to turn the front wheels of the mowing frame, and it is cumbersome to pass through a narrow passage. Summary of the invention

[0004] In order to improve the turning flexibility of a lawn mower, the present application provides a riding lawn mower.

[0005] The present application provides a riding lawn mower adopting the following technical solution: A riding lawn mower comprises a lawn mower frame, a traveling mechanism, a cutting mechanism and an operating mechanism for an operator to ride on, the lawn mower frame comprises a first frame and a second frame, an articulated structure is arranged between the first frame and the second frame, the traveling mechanism comprises a front wheel arranged on the first frame, a rear wheel arranged on the second frame and a driving source arranged on the second frame, the cutting mechanism is arranged at the front bottom of the first frame, the operating mechanism comprises an operating panel for controlling the steering of the front wheels, and the operating panel and the articulated structure are connected via a transmission amplification structure.

[0006] By adopting the above technical solution, the first frame and the second frame are connected by a hinge structure, and the cutting mechanism is arranged on the front side of the first frame, so that the lawn mower can cope with irregular areas more flexibly, which is convenient for the driver to check the mowing effect. By setting the transmission amplification structure, the force of the driver turning the operating disk is amplified, making the steering of the front wheel more convenient and improving the mobility of the lawn mower.

[0007] Optionally, the articulated structure includes a steering wheel disposed on the second frame, a fixed pin sleeve fixed on the steering wheel, and a fixed pin disposed on the first frame, and the steering wheel and the transmission amplification structure are transmission-connected.

[0008] By adopting the above technical solution, the structural composition of the articulated structure is disclosed. The articulated structure includes a fixed pin sleeve, a steering wheel and a fixed latch. The transmission amplification structure connects the steering wheel and the operating panel to enhance the rotation flexibility of the articulated structure.

[0009] Optionally, the transmission amplification structure includes a steering valve arranged at the end of the operating rod, a transmission chain meshed with the steering valve, and transmission gears arranged on both sides of the bottom of the first frame, and the two ends of the transmission chain are respectively meshed with the steering valve and the steering wheel.

[0010] By adopting the above technical solution, the operating panel drives the steering valve to rotate, and the rotating valve drives the transmission chain to rotate. The other end of the transmission chain cooperates with the steering wheel. The outer diameter of the transmission gear is smaller than the outer diameter of the steering wheel, so that the steering wheel can generate a larger torque. The mutual rotation of the two frames is realized through the rotation of the steering wheel, thereby realizing the steering and U-turn of the frame.

[0011] Optionally, the driving source includes a hydraulic drive axle and an engine, the input end of the hydraulic drive axle and the output end of the engine are transmission connected, the hydraulic drive axle is provided with two groups of hydraulic delivery pipes, and the two groups of hydraulic delivery pipes are respectively connected to the input end and output end of the steering valve.

[0012] By adopting the above technical solution, the hydraulic drive axle and the steering valve are connected to provide additional hydraulic kinetic energy for the steering valve, so that the mechanical hydraulic power steering of the transmission amplification structure has sufficient power, compact structure, lower energy consumption and lower manufacturing cost.

[0013] Optionally, the axis distance from the front wheel to the steering wheel is A, and the axis distance from the rear wheel to the steering wheel is B; When A is greater than B, ; When B is greater than A, .

[0014] By adopting the above technical solution, the articulation ratio between the front wheels and the rear wheels is controlled within 6% and 10%, which can make the turning flexibility of the lawn mower through narrow curves reliable.

[0015] Optionally, the cutting mechanism includes a cutting disc, multiple groups of cutting rotating seats rotatably mounted on the cutting disc, a cutting blade fixed to the cutting rotating seat, a first cutting belt connecting the multiple groups of cutting rotating seats, and a second cutting belt connecting the rotating seat and a driving source.

[0016] By adopting the above technical solution, the cutting disc and the first frame are fixed, the first cutting belt synchronously connects multiple groups of cutting rotating seats, the cutting blades of one group of cutting rotating seats are driven to rotate through the second cutting belt, and then the other two groups of cutting blades are driven to rotate through the cutting rotating seat.

[0017] Optionally, the cutting rotating seat includes a main rotating seat and a driven rotating seat, and both the main rotating seat and the driven rotating seat are provided with a first transmission disk for mounting the first cutting belt, and the main selection seat is also provided with a second transmission disk coaxial with the first rotating disk, and the second transmission disk is connected to the driving source.

[0018] By adopting the above technical solution, the first cutting belt is installed on the first transmission disk of the two rotating seats, thereby realizing the synchronous rotation of the three groups of cutting rotating seats, and the two ends of the second cutting belt are respectively connected to the second transmission disk and the driving source to realize the rotation of the three groups of cutting rotating seats as a whole.

[0019] Optionally, a transmission seat is rotatably installed at the bottom of the steering wheel, the transmission seat and the steering wheel are coaxially arranged, and a first rotating disk and a second rotating disk are sequentially arranged on the transmission seat along the axis, the first transmission disk and the first rotating disk are transmission connected, and the second rotating disk and the output end of the engine are transmission connected via the second cutting belt.

[0020] By adopting the above technical solution, the transmission seat and the steering wheel are coaxially arranged, that is, the transmission connection point of the first cutting belt and the second cutting belt is coaxial with the steering wheel, which helps to improve the stability of the chain transmission and reduce the vibration and deviation of the transmission chain during the transmission process.

[0021] Optionally, the cutting mechanism further includes a cutting adjustment assembly, which includes a first adjustment disk for adjusting the first cutting band and a second adjustment disk for adjusting the second cutting band, the first adjustment disk being provided with a first adjustment elastic member, and the second adjustment disk being provided with a second adjustment elastic member.

[0022] By adopting the above technical solution and setting the cutting adjustment component, the first adjustment disk and the second adjustment disk respectively adjust the tension of the first cutting belt and the second cutting belt to ensure that the belt maintains appropriate tightness during the transmission process. By setting two adjusting elastic parts, the tension of the tensioning wheel can be automatically adjusted according to different loads and belt wear conditions.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: The application adopts the arrangement of the articulated structure and the transmission amplification structure, so that the driver can turn the operating plate more labor-savingly, the steering of the front wheel is easier, and the mobility of the lawn mower is improved; The present application connects the hydraulic drive axle and the steering valve, so that when the engine drives the hydraulic drive axle, it can provide additional hydraulic kinetic energy to the steering valve, so that the transmission amplification structure mechanical hydraulic power steering has sufficient power, compact structure, lower energy consumption and manufacturing cost; The present application helps to improve the stability of the entire lawn mower by coaxially arranging the transmission seat and the steering wheel, while the steering of the frame has a lower impact on the cutting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0025] Figure 2 It is an exploded schematic diagram of the hinged structure of an embodiment of the present application.

[0026] Figure 3 It is a schematic diagram of the overall side structure of an embodiment of the present application.

[0027] Figure 4 It is a schematic diagram of the top structure of the first frame of an embodiment of the present application.

[0028] Figure 5 It is a schematic diagram of the bottom structure of the first frame of an embodiment of the present application.

[0029] Figure 6 It is a schematic structural diagram of the driving source and the bottom of the second frame in an embodiment of the present application.

[0030] Figure 7 It is a schematic diagram of the top structure of the cutting mechanism of the embodiment of the present application.

[0031] Figure 8 It is a schematic diagram of the bottom structure of the cutting mechanism of the embodiment of the present application.

[0032] Explanation of the reference numerals: 1. mowing frame; 11. first frame; 111. fixing pin; 112. mounting plate; 1121. positioning plate; 1122. mounting through hole; 12. second frame; 121. steering wheel; 1211. arc strip; 122. fixing pin sleeve; 123. angle bracket; 13. transmission seat; 131. first rotating disk; 132. second rotating disk; 2. walking mechanism; 21. front wheel; 22. rear wheel; 23. driving source; 231. hydraulic drive axle; 2311. driving pulley; 232. engine; 2321. output pulley; 3. cutting mechanism; 31. cutting blade; 311. positioning column; 312. fixing groove; 32. cutting rotating seat; 321. rotating shaft ; 322, fixing ring; 323, first transmission disc; 324, second transmission disc; 33, cutting blade; 34, first cutting belt; 35, second cutting belt; 36, first adjusting disc; 361, first adjusting plate; 362, first adjusting elastic member; 37, second adjusting disc; 38, second adjusting plate; 381, second adjusting elastic member; 39, auxiliary wheel; 4, operating mechanism; 41, seat; 42, operating disc; 421, turntable; 422, steering rod; 43, operating rod; 5, transmission amplification structure; 51, steering valve; 511, steering gear ring; 52, transmission chain; 53, transmission gear; 531, first transmission gear; 532, second transmission gear; 533, third transmission gear. DETAILED DESCRIPTION

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present invention can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0034] The following is combined with Figure 1-8 This application is described in further detail.

[0035] The embodiment of the present application discloses a riding lawn mower.

[0036] Reference Figure 1A riding lawn mower comprises a lawn mowing frame 1, a walking mechanism 2, a cutting mechanism 3 and an operating mechanism 4.

[0037] Reference Figure 1 and Figure 2 The mowing frame 1 includes a first frame 11 and a second frame 12, and the first frame 11 and the second frame 12 are fixedly connected by a hinge structure. The operating mechanism 4 is integrally mounted on the first frame 11. The walking mechanism 2 includes a front wheel 21 provided on the first frame 11, a rear wheel 22 provided on the second frame 12, and a driving source 23 provided on the second frame 12 and used to drive the rear wheel 22.

[0038] The hinge structure includes a steering wheel 121 disposed on the second frame 12 facing the first frame 11 , a fixing pin sleeve 122 disposed coaxially with the steering wheel 121 , and a fixing pin 111 disposed on the first frame 11 and used to be inserted into the fixing pin sleeve 122 .

[0039] A folded angle bracket 123 is provided on one side of the second frame 12, and the folded angle of the folded angle bracket 123 faces the first frame 11. The fixing pin sleeve 122 is fixed to the folded angle of the folded angle bracket 123 by welding. The steering wheel 121 is fixed to the bottom of the folded angle bracket 123, and two groups of arc strips 1211 are symmetrically arranged along the axis of the bottom of the steering wheel 121. The outer side of the arc strip 1211 has an arc arrangement groove.

[0040] The end of the first frame 11 is fixedly mounted with a mounting plate 112, and the cross section of the mounting plate 112 is U-shaped. The mounting plate 112 has two upper and lower positioning plates 1121. The upper and lower positioning plates 1121 both have mounting through holes 1122 that penetrate the end surfaces on both sides. The mounting through holes 1122 and the fixing pin sleeve 122 are coaxially arranged.

[0041] The fixing pin 111 passes through the upper positioning piece 1121 and is inserted into the fixing pin sleeve 122 , thereby realizing a hinged connection between the mounting piece 112 and the fixing pin sleeve 122 .

[0042] Reference Figure 3 The axial distance from the front wheel 21 to the steering wheel 121 is A, and the axial distance from the rear wheel 22 to the steering wheel 121 is B.

[0043] When A is greater than B, ; When B is greater than A, .

[0044] Reference Figure 4 and Figure 5The operating mechanism 4 includes a seat 41 disposed on the top of the first frame 11 and for a user to sit on, an operating panel 42 rotatably mounted on the first frame 11, and an operating rod 43 located on one side of the seat 41. The operating panel 42 includes a turntable 421 and a steering rod 422 connected to the turntable 421. The steering rod 422 and the hinge structure are connected through a transmission amplification structure 5.

[0045] The transmission amplification structure 5 includes a steering valve 51 disposed at the end of the steering rod 422, a transmission chain 52 meshed with the steering valve 51, and a transmission gear 53 disposed at the bottom of the first frame 11. The steering valve 51 is provided with a steering gear ring 511 meshed with the transmission chain 52.

[0046] The transmission gears 53 are symmetrically arranged in three groups along the axis of the length of the first frame 11, wherein the first transmission gear 531 and the second transmission gear 532 are located on the same horizontal straight line, the third transmission gear 533 is located in the middle of the first frame 11, and the axis of the third transmission gear 533 is perpendicular to the bearing of the first transmission gear 531.

[0047] The transmission chain 52 extends from the third transmission gear 533 to the arcuate bar 1211 of the steering wheel 121, so that the transmission chain 52 is arranged in the arcuate arrangement groove. The transmission chain 52 and the arcuate arrangement groove are meshed and matched. When the operator turns the steering wheel 121, the steering force is amplified and transmitted to the transmission chain 52 through the steering valve 51, and then the steering wheel 121 is driven to rotate through the transmission chain 52, so that the first frame 11 and the second frame 12 are relatively rotated along the axis of the fixed pin sleeve 122, thereby realizing the rotation of the first frame 11.

[0048] Reference Figure 2 and Figure 6 The driving source 23 includes a hydraulic drive axle 231 and an engine 232. The hydraulic drive axle 231 is fixed to the second frame 12. The hydraulic drive axle 231 is provided with two sets of hydraulic delivery pipelines for communicating with the steering valve 51. The two sets of hydraulic delivery pipelines are defined as a first hydraulic delivery pipeline and a second hydraulic delivery pipeline. The two ends of the first hydraulic delivery pipeline are respectively communicated with the fluid output end of the hydraulic drive axle 231 and the input end of the steering valve 51, and the two ends of the second hydraulic delivery pipeline are respectively communicated with the fluid return end of the hydraulic drive axle 231 and the output end of the steering valve 51.

[0049] The hydraulic drive axle 231 is connected to the rear wheel 22 to drive the rear wheel 22 to rotate. A driving pulley 2311 is provided at the input end of the hydraulic drive axle 231. The engine 232 is an existing diesel or gasoline engine 232, and an output pulley 2321 is fixed to the output shaft of the engine 232. The output pulley 2321 and the driving pulley 2311 of the hydraulic drive axle 231 are connected by belt transmission. While the engine 232 drives the rear wheel 22 to rotate, it also provides pressure output for the flow of hydraulic oil, so that the operator can better rotate the operating disk 42, which is more labor-saving and more convenient for vehicle steering.

[0050] Combination Figure 7 and Figure 8 The cutting mechanism 3 includes a cutting disc 31 fixed to the front side of the first frame 11, a plurality of cutting rotating seats 32 rotatably mounted on the cutting disc 31, a cutting blade 33 fixedly mounted on the cutting rotating seat 32, a first cutting belt 34 connecting the plurality of cutting rotating seats 32, and a second cutting belt 35 connected to the driving source 23.

[0051] The cutting blade disc 31 is in the shape of a triangular disc, and is fixed to the first frame 11 by bolts. The bottom of the cutting blade disc 31 has three cutting areas, which are arranged in a triangular shape and are interconnected.

[0052] The cutting rotating seat 32 is rotatably mounted on the central axis of the cutting area, and the cutting rotating seat 32 includes a rotating shaft 321, a fixing ring 322 sleeved on the rotating shaft 321, and a first transmission disc 323 fixed to the top of the rotating shaft 321. The top of the rotating shaft 321 passes through the cutting disc, and the first transmission disc 323 is coaxially fixed to the top of the rotating shaft 321. The cutting blade 33 is fixed to the bottom of the rotating shaft 321 by bolts and washers.

[0053] The fixing ring 322 is located at the bottom of the cutting blade disc 31. Both ends of the fixing ring 322 are limitedly installed on the rotating shaft 321 and fixedly connected to the cutting blade disc 31 by bolts. The first cutting belt 34 is a belt, which drives and connects the first transmission disk 323 of the three groups of cutting rotating seats 32. Among them, the top of the cutting blade disc 31 is provided with a first adjustment disk 36 for adjusting the tension of the first cutting belt 34. The side wall of the first adjustment disk 36 extends to form a first adjustment plate 361, and the first adjustment elastic member 362 is fixed on the first adjustment plate 361. The top of the cutting blade disc 31 is fixed with a positioning column 311 for fixing the other end of the first adjustment elastic member 362.

[0054] The three groups of cutting rotating seats 32 are defined as two driven rotating seats and one main rotating seat. The main rotating seat and the driven rotating seat have the same overall structure, and the difference between the two is that the main rotating seat is coaxially fixed with a second transmission disk 324 on the top of the first transmission disk 323.

[0055] The bottom of the lower positioning piece 1121 of the first frame 11 is rotatably mounted with a transmission seat 13, and the transmission seat 13 and the steering wheel 121 are coaxially arranged. A first rotating disk 131 and a second rotating disk 132 are sequentially arranged along the axis on the transmission seat 13. The first rotating disk 131 and the second transmission disk 324 are connected by a second cutting belt 35, and the second rotating disk 132 and the output pulley 2321 of the engine 232 are connected by a belt drive.

[0056] The top of the cutting blade disc 31 is also provided with a second adjusting disc 37 for adjusting the tension of the second cutting belt 35 and a second adjusting plate 38 for fixing the second adjusting disc 37. A second adjusting elastic member 381 is fixed on the second adjusting plate 38, and a fixing groove 312 for mounting the other end of the second adjusting elastic member 381 is provided on the cutting blade disc 31.

[0057] In order to improve the stability during mowing, the cutting disc 31 is further provided with an auxiliary wheel 39 on the side away from the first frame 11. The auxiliary wheel 39 is fixed to the cutting disc 31 through a bracket, and the bottom of the auxiliary wheel 39 and the front wheel 21 are located in the same horizontal plane.

[0058] The implementation principle of a riding lawn mower in an embodiment of the present application is as follows: when the driver sits on the seat 41 and the operating dial 421 is rotated, the input and output of hydraulic oil is realized between the steering valve 51 and the hydraulic drive axle 231, and the steering valve 51 drives the transmission chain 52 to transmit the transmission, and the transmission chain 52 amplifies the force and transmits it to the steering wheel 121, so that the two frames produce relative rotation, thereby realizing the turning operation of the vehicle.

[0059] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A riding lawn mower, comprising a lawn mower frame (1), a walking mechanism (2), a cutting mechanism (3), and an operating mechanism (4) for an operator to ride on, characterized in that: The mowing frame (1) comprises a first frame (11) and a second frame (12), wherein an articulated structure is arranged between the first frame (11) and the second frame (12), wherein the walking mechanism (2) comprises a front wheel (21) arranged on the first frame (11), a rear wheel (22) arranged on the second frame (12), and a driving source (23) arranged on the second frame (12), wherein the cutting mechanism (3) is arranged at the front bottom of the first frame (11), and the operating mechanism (4) comprises an operating panel (42) for controlling the steering of the front wheel (21), wherein the operating panel (42) and the articulated structure are connected via a transmission amplification structure (5).

2. A riding lawn mower according to claim 1, characterized in that: The hinged structure comprises a steering wheel (121) arranged on the second frame (12), a fixed pin sleeve (122) fixed on the steering wheel (121), and a fixed latch pin (111) arranged on the first frame (11); the steering wheel (121) is transmission-connected to the transmission amplification structure (5).

3. A riding lawn mower according to claim 2, characterized in that: The transmission amplification structure (5) comprises a steering valve (51) arranged at the end of the operating panel (42), a transmission chain (52) meshing with the steering valve (51), and a transmission gear (53) arranged at both sides of the bottom of the first frame (11), the two ends of the transmission chain (52) respectively meshing with the steering valve (51) and the steering wheel (121), and the outer diameter of the transmission gear (53) is smaller than the steering wheel (121).

4. A riding lawn mower according to claim 3, characterized in that: The driving source (23) comprises a hydraulic drive bridge (231) and an engine (232); an input end of the hydraulic drive bridge (231) is drivingly connected to an output end of the engine (232); the hydraulic drive bridge (231) is provided with two groups of hydraulic delivery pipelines, and the two groups of hydraulic delivery pipelines are respectively connected to the input end and the output end of the steering valve (51).

5. The riding lawn mower according to claim 2, characterized in that: The axial distance between the front wheel (21) and the steering wheel (121) is A, and the axial distance between the rear wheel (22) and the steering wheel (121) is B; When A is greater than B, ; When B is greater than A, .

6. A riding lawn mower according to claim 4, characterized in that: The cutting mechanism (3) comprises a cutting disc (31) fixed to the first frame (11), a plurality of cutting rotating seats (32) rotatably mounted on the cutting disc (31), a cutting blade (33) fixed to the cutting rotating seats (32), a first cutting belt (34) connecting the plurality of cutting rotating seats (32), and a second cutting belt (35) connecting one of the cutting rotating seats (32) and a driving source (23).

7. A riding lawn mower according to claim 6, characterized in that: The cutting rotating seat (32) comprises a main rotating seat and a driven rotating seat, each of which is provided with a first transmission disk (323) for mounting the first cutting belt (34), and the main rotating seat is also provided with a second transmission disk (324) which is coaxial with the first rotating disk (131) and for mounting the second cutting belt (35), and the second transmission disk (324) is in driving connection with the driving source (23).

8. A riding lawn mower according to claim 7, characterized in that: A transmission seat (13) is rotatably mounted at the bottom of the steering wheel (121); the transmission seat (13) and the steering wheel (121) are coaxially arranged; a first rotating disk (131) and a second rotating disk (132) are sequentially arranged on the transmission seat (13) along the axis; the first transmission disk (323) is transmission-connected to the first rotating disk (131); and the second rotating disk (132) is transmission-connected to the output end of the engine (232) via the second cutting belt (35).

9. The riding lawn mower according to claim 5, characterized in that: The cutting mechanism (3) further comprises a cutting adjustment assembly, the cutting adjustment assembly comprising a first adjustment disk (36) for adjusting the first cutting belt (34) and a second adjustment disk (37) for adjusting the second cutting belt (35), the first adjustment disk (36) being provided with a first adjustment elastic member (362), and the second adjustment disk (37) being provided with a second adjustment elastic member (381).

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