A high-strength mounting housing for a lawnmower

Abstract

A high-strength mounting housing for a lawnmower belongs to the technical field of lawnmower equipment. Two inner support plates are symmetrically arranged before and after a through-hole inside the housing. The middle part of the inner support plate is an arc shape concentric with the through-hole, conforming to the contour of the mounting components. This efficiently converts the concentrated load at the center into pressure distributed to both sides of the inner support plates, providing direct and reliable reinforcement support for the core mounting area. The inner support plates are secured by first pins through mating pin holes on their folded edges and mounting pin holes on the sides of the housing, transferring force laterally to the robust side shell surface. The force is longitudinally distributed to the bottom surface of the housing through support plate connection holes at the bottom of the inner support plates, connection holes at the bottom of the housing, and an L-shaped connecting plate, greatly avoiding stress concentration. The inner support plates are tightly fitted to the side walls of the housing through folded edges and connected to the bottom of the housing through the L-shaped connecting plate, forming a high-rigidity internal spatial frame with the housing walls, significantly enhancing the overall torsional and deformation resistance.

Description

Technical Field

[0001] This utility model belongs to the technical field of lawnmower equipment, specifically relating to a high-strength mounting housing for a lawnmower. Background Technology

[0002] Existing housings may be simple open box structures lacking effective internal reinforcement. When heavy mowing components (such as blades and motors) are installed through the central through-hole and operate continuously, the enormous downward pull and vibration can cause deformation, sinking, or even cracking of the bottom of the housing, especially the area around the through-hole. Lawn mowers are subjected to uneven lateral impact forces during operation. The two side shells of existing housings may be just flat plates simply connected to the bottom, lacking a structure that can effectively resist torsional deformation. This can cause the entire housing to "float" or slightly twist under stress, affecting the concentricity of the drive shaft and accelerating the wear of parts. Summary of the Invention

[0003] The present invention aims to solve the technical problems existing in the prior art and provide a high-strength mounting housing for lawnmowers.

[0004] The above-mentioned technical problems of this utility model are mainly solved by the following technical solution: a high-strength mounting housing for a lawnmower, comprising a mounting housing, wherein the mounting housing is open at the top and has a structure that is smaller at the front and larger at the back, and is generally in the shape of an isosceles trapezoid; a through hole is provided at the bottom of the mounting housing, the through hole being located at the center of the mounting housing; the mounting housing includes two symmetrically arranged side shell surfaces, and two sets of mounting pin holes are provided on the side shell surfaces; a bottom connecting hole is provided on the bottom surface of the mounting housing on both the front and rear sides of the through hole; two inner support plates are symmetrically arranged inside the mounting housing on both the front and rear sides of the through hole, and the left and right sides of the inner support plates are provided with mating pin holes corresponding to the mounting pin holes; a first pin is connected between the mating pin holes and the mounting pin holes.

[0005] Preferably, the inner support plate has a support plate connecting hole at the bottom of the middle position; the inner support plate is connected to the bottom surface of the mounting housing by an L-shaped connecting plate, and a second pin is connected between the support plate connecting hole, the bottom connecting hole and the L-shaped connecting plate.

[0006] Preferably, the upper end of the mounting housing is tapered inward; both the left and right sides of the inner support plate are provided with folded edges that fit against the side shell surface of the mounting housing, and the mating pin hole is located on the folded edge.

[0007] Preferably, the middle position of the inner support plate is arc-shaped, and the center of the arc coincides with the center of the through hole.

[0008] Preferably, reinforcing ribs are provided in the inner cavities at both the front and rear ends of the mounting housing.

[0009] The beneficial effects of this utility model are as follows: two inner support plates are symmetrically arranged before and after the through hole inside the shell. The middle part of the plate is an arc shape with the same center as the through hole, which perfectly matches the outline of the mounting component. This can efficiently convert the central concentrated load into pressure that is distributed to both sides of the inner support plate, providing direct and reliable reinforcement support for the core mounting area.

[0010] The first pin secures the inner support plate to the robust side shell by connecting the mating pin holes on the folded edges on both sides with the mounting pin holes on the side of the shell, thus transferring the force laterally to the solid side shell surface. The second pin secures the inner support plate to the bottom shell by connecting the support plate at the bottom, the connecting hole at the bottom of the shell, and the L-shaped connecting plate, thus dispersing the force longitudinally to the bottom surface of the shell, which greatly avoids stress concentration.

[0011] The inner support plate fits tightly against the shell sidewall through a folded edge and is connected to the bottom of the shell through an L-shaped connecting plate, so that the inner support plate and the shell wall together form a highly rigid internal space frame, which significantly enhances the overall torsional and deformation resistance.

[0012] The shell adopts an isosceles trapezoidal structure that tapers at the top, which inherently provides excellent stability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of a structure of the L-shaped connecting plate of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the second pin and the bottom connecting hole of this utility model.

[0016] In the diagram: 1. Mounting housing; 2. Through hole; 3. Side shell surface; 4. Mounting pin hole; 5. Bottom connecting hole; 6. Inner support plate; 7. Mating pin hole; 8. First pin; 9. Support plate connecting hole; 10. L-shaped connecting plate; 11. Second pin; 12. Folded edge; 13. Reinforcing rib. Detailed Implementation

[0017] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0018] Example: A high-strength mounting housing for a lawnmower, such as Figures 1-3As shown, the device includes a mounting housing, which is open at the top and has a front-to-back shape, forming an isosceles trapezoid. A through hole is located at the bottom of the mounting housing, at its center. The mounting housing includes two symmetrically arranged side shells, each with two sets of mounting pin holes. A bottom connection hole is located on the bottom surface of the mounting housing on both sides of the through hole. Two symmetrically arranged inner support plates are located inside the mounting housing on both sides of the through hole, each with mating pin holes corresponding to the mounting pin holes on its left and right sides. A first pin connects the mating pin holes to the mounting pin holes.

[0019] The inner support plate has a support plate connecting hole at the bottom of the middle position; the inner support plate is connected to the bottom surface of the mounting shell by an L-shaped connecting plate, and a second pin is connected between the support plate connecting hole, the bottom connecting hole and the L-shaped connecting plate.

[0020] The upper end of the mounting housing tapers inward; both the left and right sides of the inner support plate are provided with folded edges that fit against the side shell surface of the mounting housing, and the mating pin hole is located on the folded edge.

[0021] The middle position of the inner support plate is arc-shaped, and the center of the arc coincides with the center of the through hole.

[0022] Reinforcing ribs are provided in the inner cavities at both the front and rear ends of the mounting housing.

[0023] The principle of this utility model is as follows: the cutter head assembly is installed through the through hole at the bottom center. Its weight and the main downward load of the operation are first applied to the area around the through hole. Two inner support plates symmetrically arranged in front of and behind the through hole directly receive and support the load with their arc-shaped center. The arc design is concentric with the through hole, which ensures the centering and stability of the load transfer.

[0024] The load is transmitted to both sides through the inner support plate to the side wings with folded edges. The folded edges are fastened to the mounting pin holes on the side of the shell by the first pin, effectively transmitting the force to the robust side shell surface, thereby resisting lateral deformation.

[0025] The load is transmitted downward through the support plate connection hole at the bottom of the inner support plate. The upper end of the L-shaped connecting plate is fixed to the connection hole by a second pin, and the lower end is fixed to the bottom connection hole at the bottom of the shell by another second pin, thereby guiding the force longitudinally to the larger shell bottom plate and avoiding local depression of the bottom plate.

[0026] The inner support plate, folded edge, L-shaped connecting plate and shell are connected by pins to form a high-rigidity internal space frame, which greatly improves the overall bending and torsional stiffness of the shell.

[0027] The isosceles trapezoidal structure of the shell, which is smaller at the front and larger at the back, and the design of the top tapering inward, enhance the structural stability.

[0028] The reinforcing ribs further strengthen the weak areas at the front and rear ends of the shell and change the natural frequency of the structure, effectively suppressing vibration and resonance during operation.

[0029] Finally, it should be noted that the above embodiments are merely representative examples of this utility model. Obviously, this utility model is not limited to the above embodiments and can have many variations. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model should be considered to fall within the protection scope of this utility model.

Claims

1. A high strength mounting housing for a lawnmower comprising a mounting housing characterised in that: The mounting housing is open at the top and has a front-to-back shape, forming an isosceles trapezoid. A through hole is located at the center of the mounting housing. The mounting housing includes two symmetrically arranged side shells with two sets of mounting pin holes. A bottom connection hole is located on the bottom surface of the mounting housing on both sides of the through hole. Two symmetrically arranged inner support plates are located inside the mounting housing on both sides of the through hole, and each inner support plate has a mating pin hole corresponding to the mounting pin hole on its left and right sides. A first pin connects the mating pin hole and the mounting pin hole.

2. A high strength mounting housing for a lawnmower as claimed in claim 1, characterised in that: The inner support plate has a support plate connecting hole at the bottom of the middle position; the inner support plate is connected to the bottom surface of the mounting shell by an L-shaped connecting plate, and a second pin is connected between the support plate connecting hole, the bottom connecting hole and the L-shaped connecting plate.

3. A high-strength mounting housing for a lawn mower as defined in claim 1, characterized in that: The upper end of the mounting housing tapers inward; both the left and right sides of the inner support plate are provided with folded edges that fit against the side shell surface of the mounting housing, and the mating pin hole is located on the folded edge.

4. A high-strength mounting housing for a lawn mower as defined in claim 1, characterized in that: The middle position of the inner support plate is arc-shaped, and the center of the arc coincides with the center of the through hole.

5. A high-strength mounting housing for a lawn mower as defined in claim 1, characterized in that: Reinforcing ribs are provided in the inner cavities at both the front and rear ends of the mounting housing.

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