Lawn mower lifting structure

Abstract

The utility model relates to the technical field of agricultural machinery, in particular to a hay mower lifting structure which comprises a walking mechanism, the walking mechanism is provided with a rack in a fixed structure mode, the rack is provided with swing arms in a hinged structure mode, two swing arms arranged in parallel form a group, and the two groups of swing arms are arranged on the left side and the right side of the rack respectively; the rack is provided with a power mechanism used for driving the swing arm to rotate around the hinge point of the swing arm and the rack. A connecting rod is arranged on the lower portion of the swing arm in a hinged structure mode and provided with a platform in a hinged structure mode. The rack is provided with a limiting piece in a fixed structure mode, the limiting piece is connected with the vertical rod in a sliding structure mode, the lower portion of the vertical rod is connected with the platform in a fixed structure mode, and the vertical rod can play a role in guiding the platform to ascend and descend in the vertical direction. Through the design of the vertical rod and the connecting rod, it is guaranteed that the swing arm can drive the platform to ascend and descend in the vertical direction through the connecting rod, front and back space occupation is reduced, then the weight of a mower body is reduced, power output is reduced, and economical efficiency is improved.

Description

Technical field:

[0001] The present application relates to the technical field of agricultural machinery, and in particular to a lifting structure of a lawn mower. Background technology:

[0002] Chinese invention patent application with application number 202010179429.7 - A wheeled liftable disc lawn mower, comprising a chassis running device, a mowing device and two sets of height adjustment devices; the chassis running device comprises a front axle, a rear axle, a frame, running wheels and a running power mechanism; the mowing device comprises a frame, a cutting knife and a drive mechanism; the height adjustment device comprises two parallel connecting rods, a connecting rod and an electric push rod; each connecting rod is provided with three hinge points, including an upper hinge point, a middle hinge point and a lower hinge point; the lower hinge point is hinged to the frame, and the middle hinge point is hinged to the frame; the two ends of the connecting rod are respectively hinged to the two upper hinge points; one end of the electric push rod is hinged to the frame, and the other end is hinged to one of the upper hinge points of the connecting rod.

[0003] The height adjustment device of the lawn mower drives the mowing device up and down through a quadrilateral connecting rod structure, which also causes the mowing device to move forward and backward while moving up and down, resulting in an overall frame that is too large, increasing the weight of the lawn mower, and increasing energy consumption and cost. Utility model content:

[0004] To solve the above technical problems, the present invention provides a lawn mower lifting structure, which solves the technical problem that the existing lifting structure needs to move forward and backward while lifting, resulting in an oversized overall frame, increasing energy consumption and cost. To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A lawn mower lifting structure, comprising:

[0006] The walking mechanism has a frame arranged in a fixed structure;

[0007] The swing arm is connected to the frame in an articulated structure. Two parallel swing arms form a group, and the two groups of swing arms are respectively arranged on the left and right sides of the frame;

[0008] A power mechanism for driving the swing arm to rotate around a hinge point with the frame, the power mechanism being connected to the frame;

[0009] Connecting rod, the upper part of the connecting rod is connected to the lower part of the swing arm in a hinged structure;

[0010] The platform is connected to the connecting rod in an articulated structure;

[0011] The vertical pole serves as a guide for the platform to rise and fall vertically, and the vertical pole is connected to the platform in a fixed structure;

[0012] The limiting member is connected to the vertical rod in a sliding structure, and the limiting member is connected to the frame in a fixed structure.

[0013] Furthermore, the traveling mechanism is a crawler chassis or a wheeled chassis.

[0014] Furthermore, the power mechanism includes a support seat, an electric push rod and a connecting arm. The support seat is arranged on the upper end surface of the frame in a fixed structure manner. The support seat is connected to the electric push rod in a hinged structure manner. The other end of the electric push rod is connected to the connecting arm in a hinged structure manner. The connecting arm is connected to the swing arm in a hinged structure manner.

[0015] Furthermore, the limiting member includes a sleeve and a connecting member, and the sleeve is fixedly connected to the frame through the connecting member;

[0016] The vertical rod is sleeved in the sleeve and connected with the sleeve through a sliding structure.

[0017] Furthermore, a positioning nut is provided on the vertical rod at the upper portion of the sleeve in a threaded engagement manner.

[0018] Furthermore, a plurality of through holes are vertically spaced apart at the lower portion of the swing arm;

[0019] The connecting rod is detachably connected to one of the through holes via a bolt.

[0020] The beneficial effects of the present invention are as follows: through the design of the vertical rod and the connecting rod, the swing arm is ensured to be able to lift and lower the platform vertically through the connecting rod driving mechanism, thereby reducing the space occupied in the front and rear, thereby reducing the weight of the lawn mower body, thereby reducing power output and improving economy.

[0021] When the height does not need to be adjusted for a long time, the platform can be hung on the frame through the vertical pole by cooperating with the positioning nut and the limit piece, and the hanging height can also be adjusted through the through hole, which reduces the force on the electric push rod and increases its service life. Even if the electric push rod fails, the height adjustment of the lawn mower can be ensured by cooperating with the limit piece, the vertical pole and the positioning nut, thereby improving practicality. Description of the drawings:

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0023] Figure 2 It is a schematic structural diagram of an embodiment of the present utility model.

[0024] In the picture:

[0025] 1. Traveling mechanism, 2. Frame, 3. Swing arm, 4. Connecting rod, 5. Platform, 6. Vertical pole, 7. Limiting piece, 71. Sleeve, 72. Connecting piece, 8. Support seat, 9. Electric push rod, 10. Connecting arm, 11. Positioning nut, 12. Through hole. Specific implementation method:

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will now be described in further detail with reference to the accompanying drawings and the following examples so that the public can better understand the implementation method of the present invention. The specific implementation scheme of the present invention is as follows:

[0027] A lawn mower lifting structure is characterized by including a walking mechanism 1, wherein the walking mechanism 1 is provided with a frame 2 in a fixed structure, and the frame 2 is provided with a swing arm 3 in an articulated structure. Two parallel swing arms 3 form a group, and the two groups of swing arms 3 are respectively provided on the left and right sides of the frame 2; the frame 2 is provided with a power mechanism for driving the swing arm 3 to rotate around the hinge point with the frame 2; the lower part of the swing arm 3 is provided with a connecting rod 4 in an articulated structure, and the connecting rod 4 is provided with a platform 5 in an articulated structure; the frame 2 is provided with a limit member 7 in a fixed structure, and the limit member 7 is connected to the vertical rod 6 in a sliding structure. The lower part of the vertical rod 6 is connected to the platform 5 in a fixed structure, and the vertical rod 6 can guide the platform 5 in the vertical lifting. Through the design of the vertical rod 6 and the connecting rod 4, it is ensured that the swing arm 3 drives the platform 5 to be lifted vertically through the connecting rod 4, reducing the space occupied in the front and rear, thereby reducing the weight of the lawn mower body, thereby reducing power output and improving economy.

[0028] Specifically, the walking mechanism 1 is a crawler chassis or a wheeled chassis. In this embodiment, it is a crawler chassis to meet the mobility requirements of various complex terrains. A mowing device is installed on the platform 5, which is a prior art and will not be described in detail.

[0029] It should be noted that the power mechanism includes a support base 8, an electric push rod 9 and a connecting arm 10. The support base 8 is arranged on the upper end surface of the frame 2 in a fixed structure manner. The support base 8 is connected to the electric push rod 9 in a hinged structure manner. The other end of the electric push rod 9 is connected to the connecting arm 10 in a hinged structure manner. The connecting arm 10 is connected to the swing arm 3 in a hinged structure manner. The electric push rod 9 is used to push the connecting arm 10 to move, and then the connecting arm 10 pushes the swing arm 3 to rotate around the hinge point with the frame 2 to realize the lifting and lowering of the lower part.

[0030] Specifically, the limiting member 7 includes a sleeve 71 and a connecting member 72. The sleeve 71 is fixedly connected to the frame 2 through the connecting member 72. The vertical rod 6 is sleeved in the sleeve 71 and connected to the sleeve 71 through a sliding structure to ensure that the vertical rod 6 moves vertically.

[0031] Furthermore, the vertical rod 6 on the upper part of the sleeve 71 is provided with a positioning nut 11 through threaded engagement. When the height adjustment is not required for a long time, the platform 5 is hung on the frame 2 through the vertical rod 6 by cooperating with the positioning nut 11 and the limiter 7, thereby reducing the force on the electric push rod 9 and improving its service life.

[0032] A plurality of through holes 12 are vertically spaced apart at the lower portion of the swing arm 3 , and the connecting rod 4 is detachably connected to one of the through holes 12 by a bolt. The hanging height of the platform 5 can be adjusted through the through hole 12 , thereby increasing the adjustment range and improving practicality.

[0033] The working principle and working process of this utility model are as follows:

[0034] Under normal working conditions, the height of the platform 5 from the ground is adjusted, and the electric push rod 9 is started. The electric push rod 9 pushes the connecting arm 10 to move, and then the connecting arm 10 pushes the swing arm 3 to rotate around the hinge point with the frame 2. Due to the limitation of the vertical rod 6 on the platform 5, when the lower part of the swing arm 3 pulls the connecting rod 4 to move upward, the angle between the connecting rod 4 and the swing arm 3 becomes smaller, and then the connecting rod 4 pulls the platform 5 upward. At the same time, the vertical rod 6 also moves upward and moves relative to the sleeve 71 until it reaches the predetermined height.

[0035] If the electric push rod 9 fails, it is removed; the positioning nut 11 is engaged with the thread of the vertical rod 6, and the positioning nut 11 is rotated to adjust the length of the vertical rod 6 on the upper part of the sleeve 71, thereby adjusting the height of the platform 5.

[0036] In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "left", "right", "front", "back", "lower left", "upper right", "outer", "clockwise", "counterclockwise", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Although the present invention has been described based on a limited number of embodiments, those skilled in the art, with the benefit of the above description, should understand that other embodiments are conceivable within the scope of the present invention described herein.

Claims

1. A lawn mower lifting structure, characterized in that: include: A walking mechanism (1), wherein the walking mechanism (1) is provided with a frame (2) in a fixed structure manner; A swing arm (3), the swing arm (3) is connected to the frame (2) in a hinged structure, two parallel swing arms (3) form a group, and the two groups of swing arms (3) are respectively arranged on the left and right sides of the frame (2); A power mechanism for driving the swing arm (3) to rotate about a hinge point with the frame (2), the power mechanism being connected to the frame (2); A connecting rod (4), the upper portion of the connecting rod (4) is connected to the lower portion of the swing arm (3) in a hinged structure; A platform (5), wherein the platform (5) is connected to the connecting rod (4) in an articulated structure; A vertical rod (6) serves as a guide for the platform (5) to be lifted and lowered vertically, and the vertical rod (6) is connected to the platform (5) in a fixed structure; The limiting member (7) is connected to the vertical rod (6) in a sliding structure, and the limiting member (7) is connected to the frame (2) in a fixed structure.

2. The lawn mower lifting structure according to claim 1, characterized in that: The walking mechanism (1) is a crawler chassis or a wheeled chassis.

3. The lawn mower lifting structure according to claim 1, characterized in that: The power mechanism comprises a support seat (8), an electric push rod (9) and a connecting arm (10); the support seat (8) is arranged on the upper end surface of the frame (2) in a fixed structure manner; the support seat (8) and the electric push rod (9) are connected in an articulated structure manner; the other end of the electric push rod (9) is connected in an articulated structure manner to the connecting arm (10); and the connecting arm (10) is connected in an articulated structure manner to the swing arm (3).

4. The lawn mower lifting structure according to claim 1, characterized in that: The limiting member (7) includes a sleeve (71) and a connecting member (72), and the sleeve (71) is fixedly connected to the frame (2) via the connecting member (72); The vertical rod (6) is sleeved in the sleeve (71) and connected to the sleeve (71) via a sliding structure.

5. The lawn mower lifting structure according to claim 4, characterized in that: The vertical rod (6) on the upper part of the sleeve (71) is provided with a positioning nut (11) through a threaded engagement manner.

6. The lawn mower lifting structure according to claim 5, characterized in that: The lower portion of the swing arm (3) is provided with a plurality of through holes (12) spaced apart vertically; The connecting rod (4) is detachably connected to one of the through holes (12) via a bolt.

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