Frame structure of riding type mower

Abstract

The utility model discloses a frame structure of a riding type mower. The frame structure solves the problems that an existing frame of the riding type mower is low in precision, large in transportation size and high in production and maintenance cost. The vehicle frame structure of the riding type mower comprises a first vehicle frame and a second vehicle frame, a machine shell of the riding type mower is installed on the first vehicle frame, a walking mechanism and a working mechanism of the riding type mower are installed on the second vehicle frame, the first vehicle frame is of an annular bending forming structure, and the second vehicle frame is of an annular bending forming structure. The second frame is of a rectangular frame structure, and the first frame and the second frame are detachably and fixedly connected. According to the frame structure disclosed by the utility model, the first frame and the second frame can be transported separately, so that the transportation convenience is improved; meanwhile, the second frame can be universal, so that the research and development cost, the production cost and the maintenance cost are reduced; in addition, the second frame is of a rectangular frame structure, so that the overall precision of the frame and the matching precision of all components installed on the frame can be improved.

Description

Technical Field

[0001] This utility model relates to the field of riding lawnmower technology, and in particular to the frame structure of riding lawnmowers. Background Technology

[0002] The frame of a ride-on lawnmower is used to mount the walking mechanism, cutting blade, seat, steering wheel, brake pedal, accelerator pedal, and housing of the ride-on lawnmower.

[0003] For example, in the Chinese utility model patent application with publication number CN206181843U, entitled "Lawn Mower Frame and Electric Lawn Mower with the Frame", the frame includes an upper tube frame and a lower tube frame, both of which are made of bent and welded metal round tubes, and the upper tube frame and the lower tube frame are connected by welding through a support tube.

[0004] In the above solution, the upper and lower tube frames are formed by bending and connected by welding, resulting in insufficient overall precision of the frame; at the same time, the frame welded into one piece is large in size and inconvenient to transport; secondly, the production, installation and subsequent maintenance costs of the frame are high. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art by proposing a frame structure for a ride-on lawnmower, so as to solve the problems of low frame precision, large transportation volume and high production and maintenance costs of existing ride-on lawnmowers.

[0006] To achieve the above technical objectives, the present invention proposes a frame structure for a ride-on lawnmower, comprising a first frame and a second frame. The housing of the ride-on lawnmower is mounted on the first frame, and the walking mechanism and working mechanism of the ride-on lawnmower are mounted on the second frame. The first frame is a ring-shaped bent structure, and the second frame is a rectangular frame structure. The first frame and the second frame are detachably fixedly connected.

[0007] The frame structure of this utility model allows for separate transportation of the first and second frames due to their detachable connection, thereby reducing the overall size of the frame structure and improving transportation convenience. Furthermore, since the first frame is used to mount the machine housing, the second frame is universal for different lawnmower models, reducing research and development and production costs. It also eliminates the need to replace the entire frame for some maintenance work, lowering maintenance costs. Additionally, the rectangular frame structure of the second frame helps improve the overall precision of the frame and the fitting precision between the components mounted on it.

[0008] Preferably, the first frame is provided with a positioning plate, which is connected to the second frame by fasteners.

[0009] By adopting the aforementioned technical solution, a positioning plate is provided on the first frame, which enables the first frame, which is compatible with different models of housings, to be connected with a second frame of the same size, thereby achieving the universality of the second frame between different models.

[0010] Preferably, at least three sets of positioning plates are provided, and the at least three sets of positioning plates are respectively located at the front, middle and rear of the first frame and respectively connected to the front, middle and rear of the second frame.

[0011] By adopting the aforementioned technical solution, the first frame is connected to the second frame at the front, middle and rear. On the one hand, this improves the reliability of the connection between the first frame and the second frame, and on the other hand, it makes the connection position between the first frame and the second frame more accurate.

[0012] Preferably, the positioning plate is connected to the housing by fasteners.

[0013] By adopting the aforementioned technical solution, the connection between the positioning plate and the housing avoids the need for an additional connection structure on the first frame to connect with the housing, thereby reducing costs.

[0014] Preferably, the first frame includes a front frame and a rear frame, the seat of the riding lawnmower is mounted on the rear frame, the pedals of the riding lawnmower are located in the front frame, and the horizontal height of the rear frame is higher than that of the front frame.

[0015] The aforementioned technical solution enables the first chassis to provide the operator with a good sitting posture and a good field of vision.

[0016] Preferably, the rear frame is located above the second frame, and a storage space for accommodating the battery pack is formed between the rear frame and the second frame. The second frame is provided with a battery pack fixing beam at a position corresponding to the rear frame.

[0017] By adopting the aforementioned technical solution, a storage space for the battery pack is formed between the second frame and the rear frame, allowing the lawnmower's battery pack to be properly stored and ensuring the stability of the battery pack storage. At the same time, the battery pack fixing beam on the second frame can also increase the strength of the second frame and improve its stability.

[0018] Preferably, the second frame is provided with a steering wheel mounting bracket and a pedal bearing beam at a position corresponding to the front frame.

[0019] By adopting the aforementioned technical solution, by setting a steering wheel fixing bracket and a pedal bearing beam on the second frame, on the one hand, the steering wheel and pedal of the lawnmower can be supported to ensure the stability of the steering wheel and pedal; on the other hand, the steering wheel fixing bracket and the pedal bearing beam can also increase the strength of the second bracket and improve the stability of the second frame.

[0020] Preferably, a transition frame with bending is connected between the front frame and the rear frame, and the bending angle between the transition frame and the front frame and the bending angle between the transition frame and the rear frame are both acute angles.

[0021] By adopting the aforementioned technical solution, the bending transition frame improves the connection strength between the front frame and the transition frame, and between the rear frame and the transition frame, thereby increasing the structural strength of the rear frame and improving the support performance of the rear frame for the seat.

[0022] Preferably, the second frame includes two longitudinal beams and several crossbeams, the crossbeams being connected between the two longitudinal beams.

[0023] By adopting the aforementioned technical solution, the second frame is connected by longitudinal beams and transverse beams to form a rectangular frame structure, which can improve the structural strength of the second frame and thus improve its support capacity for the first frame, as well as the lawnmower's casing, walking mechanism, and working mechanism.

[0024] Preferably, the second frame is provided with a front anti-collision beam that extends out of the front of the first frame, and the second frame is provided with a tow hook that extends out of the rear of the first frame.

[0025] Using the aforementioned technical solution, the anti-collision beam can protect the first frame and the machine casing from damage when the lawnmower collides while it is moving; the tow hook provides the lawnmower with a certain towing capacity and can also help the lawnmower get out of trouble when it gets stuck.

[0026] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the vehicle frame in an embodiment of the present utility model;

[0028] Figure 2 This is an exploded view of the vehicle frame in an embodiment of this utility model;

[0029] Figure 3 This is a side view of the vehicle frame in an embodiment of the present invention.

[0030] Figure label:

[0031] 100. First frame; 110. Positioning plate; 111. Positioning hole; 112. Mounting hole; 120. Front frame; 130. Rear frame; 140. Transition frame; 150. Support beam.

[0032] 200. Second frame; 210. Longitudinal beam; 220. Crossbeam; 221. Battery pack mounting beam; 222. Pedal bearing beam; 223. Steering wheel mounting bracket; 230. Tow hook. Detailed Implementation

[0033] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" or "several" means two or more, unless otherwise expressly defined.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] like Figure 1 , Figure 2As shown in the embodiment of this utility model, the frame structure of the riding lawnmower includes a first frame 100 and a second frame 200. The housing of the riding lawnmower is installed on the first frame 100, and the walking mechanism and working mechanism of the riding lawnmower are installed on the second frame 200. The first frame 100 is a ring-shaped bent structure, and the second frame 200 is a rectangular frame structure. The first frame 100 and the second frame 200 are detachably fixedly connected.

[0038] The walking mechanism includes a steering wheel, steering wheels, drive wheels, a brake pedal, an accelerator pedal, and a drive motor that drives the drive wheels to rotate. The working mechanism includes a cutting blade, a lifting assembly for controlling the raising and lowering of the cutting blade, and a drive assembly for driving the cutting blade to rotate.

[0039] Because springback occurs during the bending process of pipe fittings, the bending of the frame will introduce certain errors. For closed-loop bending structures, welding at the joints will cause material deformation due to heat, further increasing the frame error and making it difficult to guarantee the frame's precision. Since lawnmower housings are typically made of engineering plastics, which have a certain deformation capacity, they can absorb some errors. Therefore, designing the first frame 100 as a bent, closed-loop structure to connect the lawnmower housing helps reduce the cost of the first frame 100. The second frame 200 is used to install the walking mechanism and working mechanism of the ride-on lawnmower. To ensure the relative position and fitting accuracy between the working parts, the second frame 200 is a rectangular frame structure, which can be formed by welding channel steel, square steel, angle steel, etc., using tooling. Designing the second frame 200 as a rectangular frame structure avoids the additional errors introduced by bending, improving the precision of the second frame 200. Since the walking mechanism and working mechanism of the riding lawnmower are mounted on the second frame 200, the improved precision of the second frame 200 can improve the matching precision between the various working parts of the lawnmower.

[0040] In this embodiment, the main body of the first frame 100 is a closed ring-shaped bent structure.

[0041] In some other embodiments, the main body of the first frame 100 may also be a bent ring-shaped semi-open structure, with the front or rear end of the first frame 100 being open.

[0042] The frame structure of this utility model allows for separate transportation of the first frame 100 and the second frame 200 due to their detachable and fixed connection. This reduces the overall size of the frame structure and improves transportation convenience. Furthermore, since the first frame 100 is used to mount the machine housing, the second frame 200 is universally compatible with different lawnmower models, reducing research and development and production costs. It also eliminates the need to replace the entire frame for some maintenance work, lowering maintenance costs. Additionally, the rectangular frame structure of the second frame 200 helps improve the overall precision of the frame and the fitting precision between the components mounted on it, reducing assembly difficulty and saving costs.

[0043] In one embodiment, such as Figure 2 As shown, the second frame 200 includes two longitudinal beams 210 and several crossbeams 220, with the crossbeams 220 connected between the two longitudinal beams 210.

[0044] The longitudinal beams 210 can be made of channel steel, square steel, or other profiles, while the crossbeams can be made of channel steel, square steel, angle steel, steel plates, or other profiles. The longitudinal beams 210 and crossbeams 220 are welded together using tooling to form the second frame 200.

[0045] The second frame 200 is connected by longitudinal beams 210 and cross beams 220 to form a rectangular frame structure, which can improve the structural strength of the second frame 200, thereby improving the support capacity for the first frame 100 and the lawnmower's housing, walking mechanism, and working mechanism.

[0046] In one embodiment, the front of the second frame 200 is provided with a crash beam (not shown) that extends out of the front of the first frame 100, and the rear of the second frame 200 is provided with a tow hook 230 that extends out of the rear of the first frame 100.

[0047] The anti-collision beam is welded to the front of the second frame 200, and the trailer hitch 230 is welded to the rear of the second frame 200.

[0048] The anti-collision beam can protect the first frame 100 and the machine casing from damage when the lawnmower is in motion and a collision occurs; the tow hook 230 provides the lawnmower with a certain towing capacity and can also help the lawnmower get out of trouble when it gets stuck.

[0049] In one embodiment, such as Figure 1 , Figure 2 As shown, the first frame 100 includes a front frame 120 and a rear frame 130. The seat of the riding lawnmower is mounted on the rear frame 130, the pedals of the riding lawnmower are located in the front frame 120, and the horizontal height of the rear frame 130 is higher than that of the front frame 120.

[0050] In this embodiment, the rear frame 130 includes tubing located on the left and right sides along the length of the first frame 100, and a support beam 150 for supporting the seat or the seat spring is connected between the two tubing.

[0051] In this embodiment, the pedals are used by the operator to control the movement of the lawnmower, as well as its acceleration, deceleration, and stopping. The pedals include a brake pedal and an accelerator pedal. The rear frame 130 is at a higher horizontal height than the front frame 120, so that the seat position is higher than the pedal position. This allows the first frame 100 to provide the operator with a good seating posture and good visibility.

[0052] In one embodiment, such as Figures 1 to 3 As shown, a transition frame 140 with bending transition is connected between the front frame 120 and the rear frame 130. The bending angle between the transition frame 140 and the front frame 120 and the bending angle between the transition frame 140 and the rear frame 130 are both acute angles.

[0053] In this embodiment, the bending angle between the transition frame 140 and the front frame 120 is α1, and the bending angle between the transition frame 140 and the rear frame 130 is α2. α1 and α2 are approximately 45°.

[0054] Because the bending angles between the transition frame 140 and the front frame 120, and between the transition frame 140 and the rear frame 130, are both acute angles, the bending deformation between the transition frame 140 and the front frame 120, and between the transition frame 140 and the rear frame 130, is not significant. This avoids excessively large bending angles that could lead to excessively thin pipe walls at the bending points. Bending also increases the structural strength of the transition frame 140 and the front frame 120, and between the transition frame 140 and the rear frame 130.

[0055] This design, with its bending transition frame 140, enhances the connection strength between the front frame 120 and the transition frame 140, and between the rear frame 130 and the transition frame 140, thereby increasing the structural strength of the rear frame 130 and improving its support performance for the seat.

[0056] In one embodiment, such as Figures 1 to 3 As shown, the rear frame 130 is located above the second frame 200, and a storage space for accommodating the battery pack is formed between the rear frame 130 and the second frame 200. The second frame 200 is provided with a battery pack fixing beam 221 at the corresponding position of the rear frame 130.

[0057] Among them, the battery pack fixing beam 221 is one or more of a plurality of crossbeams 220.

[0058] By creating a storage space between the second frame 200 and the rear frame 130 to accommodate the battery pack, the lawnmower's battery pack can be properly stored, ensuring the stability of the battery pack storage. At the same time, the battery pack fixing beam 221 installed on the second frame 200 can also increase the strength of the second frame 200 and improve its stability.

[0059] In one embodiment, such as Figure 1 , Figure 2 As shown, the second frame 200 is provided with a steering wheel fixing bracket 223 and a pedal bearing beam 222 at the corresponding positions of the front frame 120.

[0060] Among them, the steering wheel fixing bracket 223 and the pedal bearing beam 222 are one or more of a plurality of crossbeams 220.

[0061] By installing a steering wheel mounting bracket 223 and a pedal bearing beam 222 on the second frame 200, on the one hand, the steering wheel and pedal of the lawnmower can be supported to ensure the stability of the steering wheel and pedal; on the other hand, the steering wheel mounting bracket 223 and the pedal bearing beam 222 can also increase the strength of the second support and improve the stability of the second frame 200.

[0062] In one embodiment, such as Figure 1 , Figure 2 As shown, the first frame 100 is provided with several positioning plates 110, and the positioning plates 110 are connected to the second frame 200 by fasteners.

[0063] The positioning plate 110 is positioned by a positioning fixture and then welded to the first frame 100, thereby fixing the relative positions of the positioning plates 111 and facilitating the connection between the first frame 100 and the second frame 200 of the same size. The fasteners are screws and nuts. The screw shank passes through the positioning hole 111 and the second frame 200, and the screw is screwed into the nut to detachably fix the first frame 100 and the second frame 200.

[0064] The shape of the first frame 100 is designed to fit the housing of different models, while the positioning plate 110 is used to connect the first frame 100 of different sizes with the second frame 200 of the same size, so that the second frame 200 can be universal.

[0065] By providing a positioning plate 110 on the first frame 100, the first frame 100, which is adapted to different models of housings, can be connected to the second frame 200 of the same size, thereby realizing the universality of the second frame 200 between different models.

[0066] In one embodiment, such as Figure 1 , Figure 2As shown, at least three sets of positioning plates 110 are provided, and the at least three sets of positioning plates 110 are respectively provided at the front, middle and rear of the first frame 100 and respectively connected to the front, middle and rear of the second frame 200.

[0067] This configuration allows the first frame 100 to be connected to the second frame 200 at the front, middle, and rear. On the one hand, it improves the reliability of the connection between the first frame 100 and the second frame 200. On the other hand, it also makes the connection position between the first frame 100 and the second frame 200 more accurate.

[0068] In one embodiment, such as Figure 1 , Figure 2 As shown, the positioning plate 110 is connected to the housing by fasteners.

[0069] The positioning plate 110 is also provided with a mounting hole 112 for connecting to the housing. The housing and the mounting hole 112 are detachably fixedly connected by fasteners, namely screws and nuts.

[0070] In this way, by connecting the positioning plate 110 to the housing, the need for an additional connection structure to the housing on the first frame 100 is avoided, thereby reducing costs.

[0071] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A frame structure of a riding mower, comprising a first frame and a second frame, a machine case of the riding mower being mounted to the first frame, a traveling mechanism and a working mechanism of the riding mower being mounted to the second frame, characterized in that, The first frame is a ring-shaped bent structure, and the second frame is a rectangular frame structure. The first frame and the second frame are detachably fixedly connected.

2. The frame structure as described in claim 1, characterized in that, The first frame is provided with several positioning plates, which are connected to the second frame by fasteners.

3. The frame structure as described in claim 2, characterized in that, The plurality of positioning plates are provided in at least three sets, and the at least three sets of positioning plates are respectively provided in the front, middle and rear of the first frame and respectively connected to the front, middle and rear of the second frame.

4. The frame structure as described in claim 2, characterized in that, The positioning plate is connected to the housing by fasteners.

5. The frame structure as described in claim 1, characterized in that, The first frame includes a front frame and a rear frame, the seat of the riding lawnmower is mounted on the rear frame, the pedals of the riding lawnmower are located in the front frame, and the horizontal height of the rear frame is higher than that of the front frame.

6. The frame structure as described in claim 5, characterized in that, The rear frame is located above the second frame, and a storage space for accommodating the battery pack is formed between the rear frame and the second frame. The second frame is provided with a battery pack fixing beam at a position corresponding to the rear frame.

7. The frame structure as described in claim 5, characterized in that, The second frame is provided with a steering wheel mounting bracket and a pedal bearing beam at the corresponding position to the front frame.

8. The frame structure as described in claim 5, characterized in that, A bending transition frame connects the front frame and the rear frame. The bending angle between the transition frame and the front frame, and the bending angle between the transition frame and the rear frame are both acute angles.

9. The frame structure as described in claim 1, characterized in that, The second frame includes two longitudinal beams and several crossbeams, the crossbeams being connected between the two longitudinal beams.

10. The frame structure as described in claim 1, characterized in that, The second frame is provided with a front anti-collision beam that extends out of the front of the first frame, and the second frame is provided with a trailer hitch that extends out of the rear of the first frame.

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