Front-rear suspension structure of mower capable of avoiding rear cover and front-rear mower

Abstract

The utility model discloses a mower front-rear suspension structure capable of avoiding a rear cover and a front-rear mower, and belongs to the field of mowers. The front and rear suspension structure of the mower comprises a suspension body, the suspension body is provided with a front suspension assembly and a rear suspension assembly, the lower portion of the rear suspension assembly is provided with an extension arm extending towards the rear side, and the end of the extension arm is downwards provided with a rear lower suspension piece. The height of the rear lower suspension piece is consistent with or basically consistent with the height of the front lower suspension piece of the front suspension assembly. The utility model further discloses the front and rear mowing machine. A suspension point is moved outwards through the extension arm on one side, and an avoiding space capable of being provided with a rear cover is formed below the extension arm, so that a large-size rear cover can also be arranged on a front-rear mower, and a cutter shaft of the mower can be conveniently maintained, and a blade can be conveniently replaced; meanwhile, the extension arm is used for arranging the suspension part, the consistency of the front suspension height and the rear suspension height can be kept, the universality of the front suspension and the rear suspension is guaranteed, and the use requirements of front installation and rear installation of the front-rear mower are met.

Description

Technical Field

[0001] The utility model relates to a lawn mower, and more particularly to a front and rear suspension structure of a lawn mower capable of avoiding a rear cover and a front and rear lawn mower. Background Art

[0002] Heavy-duty lawn mowers are usually installed on agricultural vehicles such as tractors. According to different installation methods, there are generally front-mounted lawn mowers, rear-mounted lawn mowers, and front and rear-mounted lawn mowers. As the name suggests, front and rear-mounted lawn mowers are lawn mowers that can be installed in the front or rear, usually by setting up front and rear suspensions.

[0003] Due to the structural limitations of the front and rear suspension, traditional front and rear mowers do not have space for a rear cover, which affects the maintenance of the mower shaft and the replacement of the blade. At present, some front and rear mowers have raised one side of the front and rear suspension to make room for the installation of the rear cover, but this design has the following disadvantages:

[0004] 1) Since the suspension points on both sides of the front and rear suspension have height requirements, the above design raises the position of one side of the suspension point, making the suspension heights on the front and rear sides different, affecting the versatility of the suspension, and even causing the lawn mower to lose its front and rear functionality and can only be installed in the front or rear.

[0005] 2) Due to the height requirements of the suspension points on both sides of the front and rear suspensions, the above design has limited lifting height for the suspension points on one side, so the space left is also limited, resulting in only a smaller rear cover to be installed, and the opening angle is also easily affected by the suspension, which greatly weakens the actual use of the rear cover and makes it lack of practical value. Summary of the invention

[0006] 1. Technical problems to be solved by the utility model

[0007] The purpose of the utility model is to overcome the above-mentioned shortcomings of the existing front and rear lawn mowers, and to provide a front and rear suspension structure of a lawn mower that can avoid a rear cover and a front and rear lawn mower. The technical solution of the utility model is adopted, and the front and rear suspension structures are improved. The suspension point is moved outwards through an extension arm on one side, and an avoidance space for setting the rear cover is formed under the extension arm, so that the front and rear lawn mowers can also be provided with a large-sized rear cover, which is convenient for maintaining the blade shaft of the lawn mower and replacing the blade; at the same time, the extension arm is used to set the suspension part, which can maintain the consistency of the front and rear suspension heights, ensure the versatility of the front and rear suspensions, and meet the front and rear installation requirements of the front and rear lawn mowers.

[0008] 2. Technical solution

[0009] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is:

[0010] The utility model discloses a front and rear suspension structure for a lawn mower capable of avoiding a rear cover, comprising a suspension body, wherein the suspension body comprises a front suspension assembly and a rear suspension assembly, wherein the lower parts of the front suspension assembly and the rear suspension assembly both comprise mounting parts for connecting with the hood of the lawn mower, and the lower part of the rear suspension assembly comprises an extension arm extending rearward, and a rear lower suspension piece is downwardly arranged at the end part of the extension arm, and the height of the rear lower suspension piece is the same or substantially the same as the height of the front lower suspension piece of the front suspension assembly.

[0011] Furthermore, the front suspension assembly includes a front bracket, two groups of front lower suspension members are correspondingly provided at the lower part of the front bracket, and a front upper suspension member is provided at the upper part of the front bracket, forming a three-point suspension mechanism;

[0012] The rear suspension assembly includes a rear bracket, two extension arms are symmetrically provided at the lower part of the rear bracket, a rear lower suspension piece is correspondingly provided at the end of each extension arm, and a rear upper suspension piece is provided at the upper part of the rear bracket, forming a three-point suspension mechanism;

[0013] The front bracket and the rear bracket are fixedly connected via a connecting bridge.

[0014] Furthermore, the rear bracket is connected to the extension arm on the corresponding side to form a triangular structure.

[0015] Furthermore, the mounting portion of the front suspension assembly is a front sliding sleeve that can be slidably mounted on a corresponding guide rod of the lawn mower hood, and the mounting portion of the rear suspension assembly is a rear sliding sleeve that can be slidably mounted on a corresponding guide rod of the lawn mower hood.

[0016] Furthermore, the height of the rear sliding sleeve is higher than that of the front sliding sleeve.

[0017] Furthermore, guide rings which are slidably matched with the corresponding guide rods are provided in the front sliding sleeve and the rear sliding sleeve.

[0018] The utility model discloses a front and rear mounted lawn mower, comprising a hood assembly, a commutator, a transmission shaft, a transmission box and a knife shaft assembly, wherein the commutator is mounted on the upper part of the hood assembly, the transmission box is arranged on one side of the hood assembly, the commutator is connected to the transmission box through the transmission shaft, the knife shaft assembly is mounted in the hood assembly and cooperates with the transmission box in transmission, and also comprises the above-mentioned front and rear mounted suspension structure of the lawn mower which can avoid the rear cover, the front and rear mounted suspension structure of the lawn mower is mounted on the upper part of the hood assembly, a rear opening is provided on the hood assembly on the side where the rear suspension assembly is located, a rear cover plate for opening or closing the rear opening is installed on the hood assembly, and the rear cover plate is located below the extension arm.

[0019] Furthermore, the upper edge of the rear cover is rotatably mounted on the upper side of the hood assembly via a hinge shaft, and a handle is also provided on the rear cover.

[0020] Furthermore, a front guide rod is provided on the front side of the hood assembly, and a rear guide rod is provided on the rear side of the hood assembly. The height of the rear guide rod on the hood assembly is higher than the height of the front guide rod on the hood assembly. The lower part of the front suspension assembly is slidably arranged on the front guide rod, and the lower part of the rear suspension assembly is slidably arranged on the rear guide rod. A side shift hydraulic cylinder capable of controlling the lateral sliding of the suspension body is also provided between the hood assembly and the suspension body.

[0021] Furthermore, side sliding plates are respectively provided on the left and right sides of the hood assembly; and a rear cover fixing hole is also reserved on one side of the hood assembly for fixing the rear cover after the rear cover is opened.

[0022] 3. Beneficial effects

[0023] Compared with the existing known technologies, the technical solution provided by the utility model has the following beneficial effects:

[0024] (1) The front and rear suspension structure of the lawn mower capable of avoiding the rear cover of the utility model comprises a suspension body, the suspension body having a front suspension assembly and a rear suspension assembly, the lower parts of the front suspension assembly and the rear suspension assembly both having a mounting part for connecting with the hood of the lawn mower, the lower part of the rear suspension assembly having an extension arm extending rearward, the end part of the extension arm being downwardly provided with a rear lower suspension part, the height of the rear lower suspension part being consistent or substantially consistent with the height of the front lower suspension part of the front suspension assembly; by improving the front and rear suspension structure, the suspension point is moved outward by the extension arm on one side, and an avoidance space for setting the rear cover is formed under the extension arm, so that the front and rear lawn mowers can also be provided with a large-sized rear cover, which is convenient for the maintenance of the lawn mower blade shaft and the replacement of the blade; at the same time, by using the extension arm to set the suspension part, the consistency of the front and rear suspension heights can be maintained, the versatility of the front and rear suspensions is ensured, and the use requirements of the front and rear lawn mowers for front and rear installation are met;

[0025] (2) The front and rear suspension structures of the lawn mower capable of avoiding the rear cover of the utility model both adopt a three-point suspension mechanism for the front suspension assembly and the rear suspension assembly, and the front bracket and the rear bracket are fixedly connected by a connecting bridge, so the structure is firm and reliable; and the rear bracket is connected to the extension arm on the corresponding side to form a triangular structure, which ensures the structural strength of the extension arm and improves the reliability of the suspension connection of the rear suspension assembly;

[0026] (3) The front and rear suspension structure of the lawn mower that can avoid the rear cover of the utility model has a rear sleeve that is higher than the front sleeve, which can make more space to facilitate the installation of a larger rear cover, while ensuring that the rear cover has a larger flip angle, further facilitating the maintenance of the blade shaft and replacement of the blade of the lawn mower;

[0027] (4) The front and rear suspension structures of the lawn mower that can avoid the rear cover of the utility model are provided with guide rings in the front and rear sliding sleeves that are slidably matched with the corresponding guide rods, thereby ensuring the smoothness and stability of the side sliding of the front and rear suspensions on the lawn mower;

[0028] (5) The front and rear lawn mower of the utility model adopts the front and rear lawn mower suspension structure capable of avoiding the rear cover, making it possible to set the rear cover of the front and rear lawn mower, greatly facilitating the maintenance of the front and rear lawn mower and improving the practicality of the front and rear lawn mower;

[0029] (6) The upper edge of the rear cover of the front and rear lawn mower of the utility model is rotatably mounted on the upper side of the hood assembly through a hinge shaft, and a handle is also provided on the rear cover, so that the rear cover can be flipped open stably and conveniently;

[0030] (7) The front and rear lawn mower of the utility model has a front guide rod on the front side of the hood assembly, and a rear guide rod on the rear side of the hood assembly. The height of the rear guide rod on the hood assembly is higher than the height of the front guide rod on the hood assembly. A side shift hydraulic cylinder capable of controlling the lateral sliding of the suspension body is also provided between the hood assembly and the suspension body, thereby forming a side shiftable front and rear lawn mower, which is convenient for adjusting the mowing position.

[0031] (8) The front and rear lawn mower of the utility model is provided with side sliding plates on the left and right sides of the hood assembly, thereby ensuring the working stability of the lawn mower and reducing the moving resistance of the lawn mower;

[0032] (9) The front and rear mounted lawn mower of the present invention has a rear cover fixing hole reserved on one side of the hood assembly for fixing the rear cover after the rear cover is opened. When in use, the user can use bolts to fix the rear cover in an open state as needed to facilitate grass removal at the rear. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a three-dimensional structural schematic diagram of the front and rear suspension structure of the lawn mower capable of avoiding the rear cover of the utility model;

[0034] Figure 2 It is a schematic diagram of the disassembled structure of the front and rear suspension structure of the lawn mower capable of avoiding the rear cover of the utility model;

[0035] Figure 3 It is a side structural schematic diagram of the front and rear suspension structure of the lawn mower capable of avoiding the rear cover of the utility model;

[0036] Figure 4 It is a three-dimensional structural schematic diagram of the front and rear lawn mower of the utility model;

[0037] Figure 5 It is a schematic diagram of the disassembled structure of the rear cover plate and the hood assembly of the front and rear lawn mower of the utility model;

[0038] Figure 6 This is a schematic diagram of the rear cover of the front and rear lawn mower of the present invention in an open state;

[0039] Figure 7 The utility model is a schematic diagram of the rear cover of the front and rear lawn mower in the closed state.

[0040] Explanation of the symbols in the schematic diagram:

[0041] 10. Suspension body; 11. Front suspension assembly; 11-1. Front bracket; 11-2. Front upper suspension member; 11-3. Front lower suspension member; 11-4. Front sliding sleeve; 12. Rear suspension assembly; 12-1. Rear bracket; 12-2. Rear upper suspension member; 12-3. Extension arm; 12-4. Rear lower suspension member; 12-5. Rear sliding sleeve; 13. Connecting bridge; 14. Guide ring;

[0042] 20. Hood assembly; 20A. Rear opening; 21. Mounting plate; 22. Front guide rod; 23. Rear guide rod; 24. Rear cover plate; 24-1. Articulated shaft; 24-2. Handle; 25. Side slide plate; 26. Rear cover fixing hole; 26A. Fixing bolt.

[0043] 30. Commutator; 40. Drive shaft; 50. Transmission box. DETAILED DESCRIPTION

[0044] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the drawings and embodiments.

[0045] [Example 1]

[0046] This embodiment discloses a front and rear suspension structure of a lawn mower that can avoid the rear cover. Figures 1 to 3As shown, the front and rear suspension structure of the lawn mower includes a suspension body 10, and the suspension body 10 has a front suspension component 11 and a rear suspension component 12. The lower parts of the front suspension component 11 and the rear suspension component 12 both have a mounting portion for connecting to the hood of the lawn mower. The front suspension component 11 is located at the front side of the lawn mower, and the rear suspension component 12 is located at the rear side of the lawn mower. When the front suspension component 11 is used to install the lawn mower, the lawn mower is installed in the rear position; when the rear suspension component 12 is used to install the lawn mower, the lawn mower is installed in the front position. The lower part of the rear suspension component 12 has an extension arm 12-3 extending to the rear side, and the end of the extension arm 12-3 is downwardly provided with a rear lower suspension member 12-4, and the height of the rear lower suspension member 12-4 is consistent or substantially consistent with the height of the front lower suspension member 11-3 of the front suspension component 11. By improving the front and rear suspension structures, the suspension point is moved outward by using the extension arm 12-3, and an avoidance space for setting a rear cover is formed under the extension arm 12-3, so that the front and rear lawn mowers can also be provided with a large-size rear cover, which is convenient for maintaining the lawn mower shaft and replacing the blade; at the same time, the extension arm 12-3 is used to set the suspension parts, so that the consistency of the front and rear suspension heights can be maintained, the versatility of the front and rear suspensions is guaranteed, and the front and rear installation requirements of the front and rear lawn mowers are met.

[0047] like Figure 1 and Figure 2 As shown, in this embodiment, the front suspension assembly 11 includes a front bracket 11-1, two groups of front lower suspension members 11-3 are correspondingly provided at the lower part of the front bracket 11-1, and a front upper suspension member 11-2 is provided at the upper part of the front bracket 11-1, forming a three-point suspension mechanism; the rear suspension assembly 12 includes a rear bracket 12-1, two extension arms 12-3 are symmetrically provided at the lower part of the rear bracket 12-1, and the end of each extension arm 12-3 is correspondingly provided with a rear lower suspension member 12-4, and a rear upper suspension member 12-2 is provided at the upper part of the rear bracket 12-1, forming a three-point suspension mechanism; the front bracket 11-1 and the rear bracket 12-1 are fixedly connected by a connecting bridge 13. The above-mentioned suspension main body structure is adopted, and the structure is firm and reliable. Specifically, the front bracket 11-1 and the rear bracket 12-1 can both be in an inverted "U" shape, the front bracket 11-1 is a metal plate welded part, and the rear bracket 12-1 and the extension arm 12-3 are an integral metal plate welded part. The connecting bridge 13 is a metal lining plate, and its two ends can be fixedly connected to the front bracket 11-1 and the rear bracket 12-1 by bolts. In addition, in order to improve the structural strength of the extension arm 12-3, the rear bracket 12-1 is connected with the extension arm 12-3 on the corresponding side to form a triangular structure. The triangular structure has better stability, ensures the structural strength of the extension arm 12-3, and improves the suspension connection reliability of the rear suspension assembly 12.

[0048] catch Figure 1 and Figure 2As shown, in this embodiment, the mounting portion of the front suspension component 11 is a front sleeve 11-4 that can be slidably mounted on the corresponding guide rod of the lawn mower hood, and the mounting portion of the rear suspension component 12 is a rear sleeve 12-5 that can be slidably mounted on the corresponding guide rod of the lawn mower hood, forming a suspension structure that can be laterally displaced. The front sleeve 11-4 can be integrally welded to the lower end of the front bracket 11-1, and the rear sleeve 12-5 can be integrally welded to the lower end of the rear bracket 12-1, and the extension arm 12-3 extends outward from the rear sleeve 12-5. The two ends of the front sleeve 11-4 connect the lower end of the front bracket 11-1, and the two ends of the rear sleeve 12-5 connect the lower end of the rear bracket 12-1, so that the structural strength of the front suspension component 11 and the rear suspension component 12 is better. Figure 3 As shown, the height of the rear sleeve 12-5 is higher than that of the front sleeve 11-4, that is, there is a height difference H between the front sleeve 11-4 and the rear sleeve 12-5. In this way, by appropriately lifting the rear sleeve 12-5 upward, the mounting portion where the rear suspension assembly 12 is connected to the lawn mower is moved upward, which can make more space to facilitate the installation of a larger rear cover, while ensuring that the flip angle of the rear cover is larger, further facilitating the maintenance of the blade shaft of the lawn mower and the replacement of the blade.

[0049] Reference Figure 2 As shown, guide rings 14 that slide with the corresponding guide rods are provided in the front sleeve 11-4 and the rear sleeve 12-5. The guide rings 14 can be respectively set at both ends of the front sleeve 11-4 and the rear sleeve 12-5. The guide rings 14 are used to ensure the smoothness and stability of the side sliding of the front and rear suspensions on the lawn mower.

[0050] [Example 2]

[0051] This embodiment discloses a front and rear lawn mower. Figure 4As shown, the front and rear lawn mower comprises a hood assembly 20, a commutator 30, a transmission shaft 40, a transmission box 50 and a cutter shaft assembly. The hood assembly 20 may be a metal welded part. The commutator 30 is mounted on the upper part of the hood assembly 20. The commutator 30 has two front and rear opposite input shafts and an output shaft arranged at 90 degrees. When the lawn mower is installed in the front or rear position, the corresponding input shafts of the commutator 30 are used for power transmission connection respectively; the transmission box 50 is arranged on one side of the hood assembly 20, and a transmission box 50 may be arranged inside the transmission box 50. A belt transmission mechanism, a chain transmission mechanism, or a gear transmission mechanism is provided, the commutator 30 is connected to the transmission box 50 through the transmission shaft 40, that is, the output shaft of the commutator 30 is connected to the input shaft of the transmission box 50 through the transmission shaft 40, and the cutter shaft assembly is installed in the hood assembly 20 and is matched with the transmission box 50, that is, one end of the cutter shaft assembly is connected to the output end of the transmission box 50, so that the power is sequentially transmitted to the cutter shaft assembly through the commutator 30, the transmission shaft 40, and the transmission box 50, driving the cutter shaft assembly to rotate and cut grass. The cutter shaft assembly has a plurality of blades, which is similar to the structure of the existing lawn mower and will not be described in detail here. Different from the existing front and rear lawn mowers, the front and rear lawn mower of this embodiment also includes the front and rear lawn mower suspension structure capable of avoiding the rear cover of the above-mentioned embodiment 1, which is installed on the upper part of the hood assembly 20, and the hood assembly 20 is provided with a rear opening 20A on the side where the rear suspension assembly 12 is located, and the hood assembly 20 is provided with a rear cover plate 24 for opening or closing the rear opening 20A, and the rear cover plate 24 is located below the extension arm 12-3. The adoption of the above-mentioned front and rear lawn mower suspension structure capable of avoiding the rear cover makes it possible to set the rear cover plate 24 on the front and rear lawn mower, which greatly facilitates the maintenance work of the front and rear lawn mower and improves the practicality of the front and rear lawn mower.

[0052] like Figure 5 As shown, in this embodiment, the upper edge of the rear cover plate 24 is rotatably mounted on the upper side of the hood assembly 20 via a hinge shaft 24-1, and a handle 24-2 is also provided on the rear cover plate 24, so that the rear cover plate 24 can be flipped up and opened stably and conveniently. Figure 6 The rear cover 24 is shown in an open state. Figure 7 The figure shows the closed state of the rear cover 24. Due to the avoidance design of the front and rear suspension structures, the size of the rear cover 24 can be designed to be larger and the opening angle is larger, which greatly improves the maintenance convenience of the front and rear lawn mowers.

[0053] catch Figures 4 to 7As shown, a front guide rod 22 is provided on the front side of the hood assembly 20, and a rear guide rod 23 is provided on the rear side of the hood assembly 20. The height of the rear guide rod 23 on the hood assembly 20 is higher than the height of the front guide rod 22 on the hood assembly 20. The lower part of the front suspension assembly 11 is slidably provided on the front guide rod 22, and the lower part of the rear suspension assembly 12 is slidably provided on the rear guide rod 23, that is, the front suspension assembly 11 is slidably provided on the front guide rod 22 through the front sliding sleeve 11-4, and the rear suspension assembly 12 is slidably provided on the rear guide rod 23 through the rear sliding sleeve 12-5, so that the suspension body 10 can slide left and right as a whole relative to the hood assembly 20. A side shift hydraulic cylinder capable of controlling the lateral sliding of the suspension body 10 is also provided between the hood assembly 20 and the suspension body 10. The relative position of the suspension body 10 and the hood assembly 20 can be controlled by the side shift hydraulic cylinder, forming a front and rear mower capable of side shifting, which is convenient for adjusting the mowing position. In order to facilitate the installation of the front guide rod 22 and the rear guide rod 23, a mounting plate 21 is also fixed on the hood assembly 20, one end of the front guide rod 22 and the rear guide rod 23 is fixed on the mounting plate 21, and the other end is fixed on the side wall of the transmission box 50, and the front guide rod 22 and the rear guide rod 23 are arranged in parallel.

[0054] In addition, if Figure 5 As shown, side slide plates 25 are respectively provided on the left and right sides of the hood assembly 20, and the front sides of the side slide plates 25 are tilted upward, thereby ensuring the working stability of the lawn mower and reducing the movement resistance of the lawn mower.

[0055] Reference Figure 4 and Figure 5 In this embodiment, rear cover fixing holes 26 are reserved on both sides of the hood assembly 20 for fixing the rear cover 24 after it is opened. When in use, the user can use bolts to fix the rear cover in an open state as needed to facilitate rear grass removal. Figure 6 The figure shows the state where the fixing bolt 26A is set in the fixing hole 26 of the rear cover. After the rear cover 24 is opened, the fixing bolt 26A can be used to fix the rear cover 24 so that the rear opening 20A remains open, which can increase the smoothness of grass discharge. When the rear cover 24 needs to be closed, the fixing bolt 26A can be unscrewed to form a Figure 7 In order to meet the requirements of relevant laws and regulations, the above-mentioned rear cover fixing hole 26 can be a reserved position hole, and the user can choose whether to punch a hole to make a bolt hole for installing the fixing bolt 26A.

[0056] The front and rear suspension structure of a lawn mower capable of avoiding a rear cover and the front and rear lawn mower of the utility model improve the front and rear suspension structure, move the suspension point outwards through an extension arm on one side, and form an avoidance space for setting the rear cover under the extension arm, so that the front and rear lawn mowers can also be provided with a large-sized rear cover, which is convenient for maintaining the blade shaft of the lawn mower and replacing the blade; at the same time, the extension arm is used to set the suspension part, so that the consistency of the front and rear suspension heights can be maintained, the versatility of the front and rear suspensions is guaranteed, and the use requirements of the front and rear lawn mowers for front and rear installation are met.

[0057] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in the field are inspired by it and design structural methods and embodiments similar to the technical solution without creative design without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A front and rear suspension structure for a lawn mower capable of avoiding a rear cover, comprising a suspension body (10), wherein the suspension body (10) comprises a front suspension component (11) and a rear suspension component (12), wherein the lower parts of the front suspension component (11) and the rear suspension component (12) each comprise a mounting portion for connecting to a hood of the lawn mower, and wherein: The lower part of the rear suspension assembly (12) has an extension arm (12-3) extending rearward, and the end of the extension arm (12-3) is provided with a rear lower suspension member (12-4) downward, and the height of the rear lower suspension member (12-4) is consistent with or substantially consistent with the height of the front lower suspension member (11-3) of the front suspension assembly (11).

2. The front and rear suspension structure of a lawn mower capable of avoiding a rear cover according to claim 1, characterized in that: The front suspension assembly (11) comprises a front bracket (11-1), two groups of front lower suspension members (11-3) are correspondingly arranged at the lower part of the front bracket (11-1), and a front upper suspension member (11-2) is arranged at the upper part of the front bracket (11-1), thereby forming a three-point suspension mechanism; The rear suspension assembly (12) comprises a rear bracket (12-1), two extension arms (12-3) are symmetrically arranged at the lower part of the rear bracket (12-1), a rear lower suspension member (12-4) is correspondingly arranged at the end of each extension arm (12-3), and a rear upper suspension member (12-2) is arranged at the upper part of the rear bracket (12-1), thereby forming a three-point suspension mechanism; The front bracket (11-1) and the rear bracket (12-1) are fixedly connected via a connecting bridge (13).

3. The front and rear suspension structure of a lawn mower capable of avoiding a rear cover according to claim 2, characterized in that: The rear support (12-1) is connected to the extension arm (12-3) on the corresponding side to form a triangular structure.

4. The front and rear suspension structure of a lawn mower capable of avoiding a rear cover according to claim 1, 2 or 3, characterized in that: The mounting portion of the front suspension component (11) is a front sliding sleeve (11-4) that can be slidably mounted on a corresponding guide rod of a lawn mower hood, and the mounting portion of the rear suspension component (12) is a rear sliding sleeve (12-5) that can be slidably mounted on a corresponding guide rod of a lawn mower hood.

5. The front and rear suspension structure of a lawn mower capable of avoiding a rear cover according to claim 4, characterized in that: The height of the rear sliding sleeve (12-5) is higher than the height of the front sliding sleeve (11-4).

6. The front and rear suspension structure of a lawn mower capable of avoiding a rear cover according to claim 4, characterized in that: The front sliding sleeve (11-4) and the rear sliding sleeve (12-5) are both provided with guide rings (14) which are slidably matched with the corresponding guide rods.

7. A front and rear lawn mower, comprising a hood assembly (20), a commutator (30), a transmission shaft (40), a transmission box (50) and a cutter shaft assembly, wherein the commutator (30) is mounted on the upper part of the hood assembly (20), the transmission box (50) is arranged on one side of the hood assembly (20), the commutator (30) is connected to the transmission box (50) through the transmission shaft (40), the cutter shaft assembly is mounted in the hood assembly (20) and is matched with the transmission box (50) in transmission, and is characterized in that: It also includes a front and rear suspension structure of a lawn mower that can avoid a rear cover as described in any one of claims 1 to 6, wherein the front and rear suspension structure of the lawn mower is installed on the upper part of a hood assembly (20), and a rear opening (20A) is provided on the hood assembly (20) on the side where the rear suspension assembly (12) is located, and a rear cover plate (24) for opening or closing the rear opening (20A) is installed on the hood assembly (20), and the rear cover plate (24) is located below the extension arm (12-3).

8. The front and rear lawn mower according to claim 7, characterized in that: The upper edge of the rear cover plate (24) is rotatably mounted on the upper side of the hood assembly (20) via a hinge shaft (24-1), and a handle (24-2) is also provided on the rear cover plate (24).

9. The front and rear lawn mower according to claim 7, characterized in that: The front side of the hood assembly (20) is provided with a front guide rod (22), and the rear side of the hood assembly (20) is provided with a rear guide rod (23); the height of the rear guide rod (23) on the hood assembly (20) is higher than the height of the front guide rod (22) on the hood assembly (20); the lower part of the front suspension assembly (11) is slidably arranged on the front guide rod (22), and the lower part of the rear suspension assembly (12) is slidably arranged on the rear guide rod (23); and a side shift hydraulic cylinder capable of controlling the lateral sliding of the suspension body (10) is also provided between the hood assembly (20) and the suspension body (10).

10. The front and rear lawn mower according to claim 7, 8 or 9, characterized in that: The left and right sides of the hood assembly (20) are also provided with side sliding plates (25) respectively; one side of the hood assembly (20) is also reserved with a rear cover fixing hole (26) for fixing the rear cover (24) after the rear cover (24) is opened.

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