Swing arm type front wheel mechanism for zero-turning lawn car

Abstract

The swing arm type front wheel mechanism comprises two fixing columns and a machine body, swing rods are installed at the bottoms of the two fixing columns, the two swing rods are rotationally connected with eccentric shafts, wheels are fixedly installed on the surfaces of the two eccentric shafts in a sleeved mode, and connecting boxes are fixedly installed on the opposite sides of the two fixing columns. According to the swing arm type front wheel mechanism for the zero-turning lawn vehicle, by arranging the cross beam, the main shaft and the like, when a pit occurs in the lawn and one wheel sinks into the pit, the wheel can drive the cross beam to incline through the fixing column, the connecting box, the main shaft and the like, and by arranging the four limiting rods, the inclination amplitude of the cross beam can be limited; by means of the arrangement, even if the wheels sink into the pit, the machine body is not affected, then the mowing efficiency of the mowing machine is guaranteed, high practicability is achieved, and through the arrangement of the disassembly and assembly structure, maintenance of the cross beam is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of lawn mowers, in particular to a swing arm type front wheel mechanism for a zero-turn lawn mower. Background Art

[0002] A lawn mower, also known as a lawn car, includes a body, a drive axle, wheels, and a mechanical brake device. There is a mowing device at the bottom of the body. The power source of the lawn car is a solar panel carport and a battery pack. The lawn car has the advantages of no noise and exhaust pollution, low cost, and low failure rate. Lawn cars are often used for mowing garden lawns.

[0003] In the current market, since there are usually mud pits, puddles and other potholes on uncut lawns, the wheels of a lawn mower will sink into the potholes when passing through the potholes, causing the entire vehicle to tilt, which may affect the quality of mowing at the least and may cause the vehicle to overturn in severe cases. Therefore, a swing-arm front wheel mechanism for a zero-turn lawn mower is proposed to solve the above problem. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a swing arm front wheel mechanism for a zero-turn lawn mower which can prevent the lawn mower from tilting as a whole and thus affecting the mowing efficiency.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a swing-arm front wheel mechanism for a zero-turn lawn vehicle, comprising two fixed columns and a fuselage, characterized in that: a swing arm is installed at the bottom of the two fixed columns, the interiors of the two swing arms are rotatably connected with eccentric shafts, the surfaces of the two eccentric shafts are fixedly sleeved with wheels, connecting boxes are fixedly installed on opposite sides of the two fixed columns, disassembly structures are provided inside the two connecting boxes, the two connecting boxes are connected to a crossbeam through the disassembly structure, a fixed block is fixedly connected to the top of the fuselage, a main shaft is rotatably connected to the middle position of the front side of the fuselage, and four limit rods are fixedly installed on the front side of the fuselage.

[0008] Furthermore, the disassembly and assembly structure comprises a bidirectional threaded rod, which is rotatably mounted on the inner bottom wall of the connection box, and has two moving blocks threadedly sleeved on the surface of the bidirectional threaded rod.

[0009] Furthermore, a rotating block is fixedly installed on the top of the bidirectional threaded rod, and a clamping rod is fixedly installed on the right side of the two moving blocks.

[0010] Furthermore, the surface of the crossbeam is provided with a plurality of slots, and the plurality of slots are all matched with the clamping rod.

[0011] Furthermore, a rotating hole is opened in the middle of the crossbeam, and the main shaft and four limiting rods penetrate the crossbeam and the fixed block and extend to the outside of the fixed block.

[0012] Furthermore, the four limit rods are arranged in groups of two, and the two groups of limit rods are respectively close to the upper end and the lower end of the crossbeam.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] The swing-arm front wheel mechanism of the zero-turn lawn mower is provided with a crossbeam, a main shaft, etc. When a pit appears on the grass and one of the wheels falls into the pit, the wheel will drive the crossbeam to tilt through a fixed column, a connecting box, a main shaft, etc., and the tilting range of the crossbeam can be limited by the provision of four limit rods, thereby reducing the influence on the wheel that has not fallen into the pit. Through the above-mentioned provision, even if the wheel falls into the pit, the body of the machine will not be affected, thereby ensuring its mowing efficiency and having high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a plan front view of the utility model;

[0017] Figure 2 It is a plan side view of the utility model;

[0018] Figure 3 This is an internal cross-sectional view of the connection box of the utility model.

[0019] In the figure: 1. fixed column; 2. rocker arm; 3. eccentric shaft; 4. wheel; 5. connection box; 6. disassembly and assembly structure; 601. bidirectional threaded rod; 602. moving block; 603. clamping rod; 7. crossbeam; 8. main shaft; 9. fixed block; 10. limit rod; 11. fuselage. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3In this embodiment, a swing arm type front wheel mechanism for a zero-turn lawn vehicle comprises two fixed columns 1 and a fuselage 11. A swing arm 2 is installed at the bottom of the two fixed columns 1. The two swing arms 2 are rotatably connected to eccentric shafts 3. Wheels 4 are fixedly sleeved on the surfaces of the two eccentric shafts 3. A connecting box 5 is fixedly installed on the opposite side of the two fixed columns 1. A disassembly structure 6 is arranged inside the two connecting boxes 5. The two connecting boxes 5 are connected to a crossbeam 7 through the disassembly structure 6. A fixing block 9 is fixedly connected to the top of the fuselage 11. A main shaft 8 is rotatably connected to the middle of the right side of the fuselage 11. Four limit rods 10 are fixedly installed on the right side of the fuselage 11.

[0022] A rotary block is fixedly installed on the top of the two-way threaded rod 601, and the rotary block is provided to facilitate the rotation of the two-way threaded rod 601. A clamping rod 603 is fixedly installed on the right side of the two moving blocks 602. Through grooves are opened on the tops of the two connecting boxes 5. The through grooves are provided to facilitate the two clamping rods 603 to extend out of the connecting box 5. When in use, the two-way threaded rod 601 is rotated by the rotary block to make the two moving blocks 602 move relative to each other, and the two moving blocks 602 drive the two clamping rods 603 to be inserted into the clamping grooves of the crossbeam 7 for fixation.

[0023] A number of slots are provided on the surface of the beam 7, and all of the slots are compatible with the clamping rod 603. A rotating hole is provided in the middle of the beam 7 to facilitate the rotation of the main shaft 8 in the beam 7. The main shaft 8 and four limit rods 10 can pass through the beam 7 and the fixed block 9 and extend to the outside. The four limit rods 10 are grouped in pairs, and the two groups of limit rods 10 are respectively located at the upper end and the lower end of the beam 7. The setting of the limit rods 10 can limit the up and down displacement of the beam 7.

[0024] When implementing, follow these steps:

[0025] 1) First, one of the wheels 4 falls into the pit, and the wheel 4 drives the crossbeam 7 to tilt through the fixed column 1, the main shaft 8, etc.;

[0026] 2) Then, four limit rods 10 are provided to limit the inclination range of the cross beam 7;

[0027] To sum up, the swing-arm front wheel mechanism of the zero-turn lawn mower is provided with a crossbeam 7, a main shaft 8, etc. When a pothole appears on the lawn, when one of the wheels 4 falls into the pothole, the wheel 4 will drive the crossbeam 7 to tilt through the fixed column 1, the connecting box 5, the main shaft 8, etc., and the inclination amplitude of the crossbeam 7 can be limited by the provision of four limit rods 10, thereby reducing the influence on the wheel 4 that has not fallen into the pothole. Through the above-mentioned provision, even if the wheel 4 falls into the pothole, the main body 11 will not be affected, thereby ensuring its mowing efficiency and having high practicality.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A swing arm front wheel mechanism for a zero-turn lawn vehicle, comprising two fixing columns (1) and a body (11), characterized in that: The bottom of the two fixed columns (1) is equipped with a rocker (2), the interior of the two rocker arms (2) is rotatably connected to an eccentric shaft (3), the surfaces of the two eccentric shafts (3) are fixedly sleeved with wheels (4), the opposite sides of the two fixed columns (1) are fixedly equipped with a connection box (5), the interior of the two connection boxes (5) is provided with a disassembly structure (6), the two connection boxes (5) are connected to a crossbeam (7) via the disassembly structure (6), the top of the fuselage (11) is fixedly connected to a fixed block (9), the middle position of the front side of the fuselage (11) is rotatably connected to a main shaft (8), and the front side of the fuselage (11) is fixedly equipped with four limit rods (10).

2. The swing arm front wheel mechanism for a zero-turn lawn vehicle according to claim 1, characterized in that: The disassembly and assembly structure (6) comprises a bidirectional threaded rod (601), the bidirectional threaded rod (601) is rotatably mounted on the inner bottom wall of the connection box (5), and two moving blocks (602) are threadedly mounted on the surface of the bidirectional threaded rod (601).

3. The swing arm front wheel mechanism for a zero-turn lawn vehicle according to claim 2, characterized in that: A rotating block is fixedly mounted on the top of the bidirectional threaded rod (601), and a clamping rod (603) is fixedly mounted on the right side of the two moving blocks (602).

4. The swing arm front wheel mechanism for a zero-turn lawn vehicle according to claim 1, characterized in that: The surface of the cross beam (7) is provided with a plurality of slots, and the plurality of slots are all matched with the clamping rod (603).

5. The swing arm front wheel mechanism for a zero-turn lawn vehicle according to claim 1, characterized in that: A rotating hole is provided in the middle of the cross beam (7), and the main shaft (8) and four limiting rods (10) penetrate the cross beam (7) and the fixing block (9) and extend to the outside of the fixing block (9).

6. The swing arm front wheel mechanism for a zero-turn lawn vehicle according to claim 1, characterized in that: The four limiting rods (10) are arranged in groups of two, and the two groups of limiting rods (10) are respectively close to the upper end and the lower end of the crossbeam (7).

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