Supporting roller mechanism and mid-mounted mower

Abstract

This application relates to a support roller mechanism and a center-mounted lawnmower. The support roller mechanism supports and moves the body of the center-mounted lawnmower. The body includes a connecting block with a mounting sleeve. The mounting sleeve has multiple pairs of through holes spaced at different heights. The support roller mechanism includes a support cylinder for insertion into the mounting sleeve and a caster wheel connected to the bottom of the support cylinder. The support cylinder has multiple pairs of connecting holes spaced at different heights. A safety pin is detachably connected between the mounting sleeve and the support cylinder. The safety pin includes a limiting shaft that passes through both the through holes and the connecting holes, and anti-disengagement hooks connected to both ends of the limiting shaft. This invention allows the height of the center-mounted lawnmower to be adjusted and enables it to move in sync with the driving direction of the tractor.

Description

Technical Field

[0001] This application relates to the field of lawnmower technology, and more specifically, to a support roller mechanism and a centrally mounted lawnmower. Background Technology

[0002] Most existing mid-mounted lawnmower structures are typically supported by support rollers located at the bottom, and the lawnmower is moved by the rotation of the support rollers.

[0003] Conventional support roller structures have a relatively simple function, only supporting the angle of movement of the lawnmower. When matched and installed with a tractor, their support height cannot be effectively adjusted.

[0004] Meanwhile, in a mid-mounted lawnmower integrated with a tractor, the rollers cannot freely align with the tractor's driving direction. In this application state, it inevitably causes a concentration of compressive stress on the lawn, resulting in lawn compaction. Utility Model Content

[0005] The purpose of this application is to provide a support roller mechanism and a center-mounted lawnmower. The support roller mechanism enables the height of the center-mounted lawnmower to be adjusted, and at the same time enables the center-mounted lawnmower to follow the driving direction of the tractor, avoiding local pressure stress caused by a single direction of movement, thereby minimizing the crushing of the lawn.

[0006] To achieve the above objectives, in a first aspect, this utility model provides a supporting roller mechanism for supporting and moving the body of a centrally mounted lawnmower. The body includes a connecting block, and the connecting block is provided with an mounting sleeve. The mounting sleeve is provided with multiple pairs of through holes spaced at different heights.

[0007] The support roller mechanism includes a support cylinder for insertion into the mounting sleeve, and a universal wheel connected to the bottom of the support cylinder. The support cylinder is provided with multiple pairs of connection holes at varying heights.

[0008] A safety pin is detachably connected between the mounting sleeve and the support cylinder. The safety pin includes a limiting shaft that passes through both the through hole and the connection hole, and anti-disengagement hooks connected to both ends of the limiting shaft.

[0009] In an optional embodiment, the limiting shaft movably passes through the through hole and the connecting hole, and the anti-detachment hook includes a semi-circular surrounding structure.

[0010] In an optional embodiment, the limiting shaft includes a limiting post located at one end, and the through hole and the connecting hole have the same diameter and are smaller than the outer diameter of the limiting post.

[0011] In an optional embodiment, the caster wheel includes a roller connecting cylinder, a wheel fork, and a roller, with the wheel fork symmetrically connected to both sides of the roller connecting cylinder and the roller connected between the wheel forks.

[0012] In an optional embodiment, at least a portion of the support cylinder is inserted into the roller connecting cylinder, and wear-resistant bushings are installed at both the top and bottom ends of the roller connecting cylinder.

[0013] In an optional embodiment, the bottom end of the support cylinder protrudes from the wear-resistant bushing located at the bottom, and a support bearing is provided inside the roller connecting cylinder, the support bearing being disposed between the wear-resistant bushings.

[0014] In an optional embodiment, the outer ring of the support bearing is fixed inside the roller connecting cylinder, and the inner ring of the support bearing is clamped to the support cylinder.

[0015] In an optional embodiment, the connecting block extends upward from the outside of the body, and the bottom end of the mounting sleeve is not lower than the bottom wall of the body.

[0016] In an optional embodiment, auxiliary wheels are also included, which are distributed at the bottom of the body.

[0017] Secondly, this utility model provides a centrally mounted lawnmower, including the support roller mechanism described in any of the foregoing embodiments.

[0018] By matching the mounting sleeve and support sleeve, and with the safety pin connecting them, the height of the centrally mounted lawnmower can be easily adjusted.

[0019] The casters at the bottom of the support cylinder, included in the support roller mechanism, enable the centrally mounted lawnmower to move in the same direction as the tractor, thereby avoiding crushing the lawn under concentrated stress.

[0020] The support roller mechanism in this invention can ensure the safety of the machine body and the support roller mechanism while making the height easy to adjust, and prevent the limit shaft from separating between the mounting sleeve and the support cylinder.

[0021] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the installation structure of the roller support mechanism on the machine body in this application;

[0024] Figure 2 This is a schematic diagram of the bottom structure of a center-mounted lawnmower;

[0025] Figure 3 A schematic diagram of the split structure supporting the roller mechanism.

[0026] icon:

[0027] 1-Centered lawnmower; 11-Body; 12-Connecting block; 13-Mounting sleeve; 14-Through hole;

[0028] 2-Support cylinder; 21-Connecting hole;

[0029] 3-Swivel caster; 31-Roller connecting cylinder; 32-Wheel fork; 33-Roller; 34-Wear-resistant bushing;

[0030] 4-Safety pin; 41-Limit shaft; 42-Anti-disengagement hook; 43-Limit post;

[0031] 5-Auxiliary wheel. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for 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 application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" 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 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 application based on the specific circumstances.

[0035] See Figures 1-3 The support roller mechanism and the central mower 1 in this application mainly achieve relative adjustment of the support height of the central mower 1 by changing the structure of the support roller mechanism and its cooperation relationship with the body 11 of the central mower 1. At the same time, it enhances the convenience of height adjustment operation and ensures the stability and reliability of the connection between the central mower 1 and the support roller mechanism.

[0036] The supporting roller mechanism in this utility model is used to support and move the body 11 of the central mower 1. Specifically, the central mower 1 and the supporting roller mechanism are connected in a separate assembly relationship. More specifically, the central mower 1 is also integrated with the tractor. During the driving of the tractor, the central mower 1 moves synchronously with the tractor through the supporting roller mechanism.

[0037] On the one hand, the centrally mounted lawnmower 1 is supported at the bottom by the support roller mechanism. On the other hand, the centrally mounted lawnmower 1 can follow the tractor and move in the same direction under the synchronous movement of the support roller mechanism.

[0038] From the perspective of separate assembly, the body 11 of the central lawnmower 1 includes a connecting block 12, and an installation sleeve 13 is provided on the connecting block 12. The connecting block 12 and the installation sleeve 13 are mainly used to form the connecting base structure for supporting the roller mechanism. In order to facilitate separate assembly, the installation sleeve 13 is provided with multiple pairs of through holes 14 with high and low intervals.

[0039] Furthermore, the support roller mechanism includes a support cylinder 2 for insertion into the mounting sleeve 13, and a caster wheel 3 connected to the bottom of the support cylinder 2. The support cylinder 2 is provided with multiple pairs of connection holes 21 at varying heights.

[0040] By detachably connecting the safety pin 4 between the mounting sleeve 13 and the support cylinder 2, the support roller mechanism and the central lawnmower 1 can be assembled as a whole by simultaneously connecting the safety pin 4 on the mounting sleeve 13 and the support cylinder 2.

[0041] The safety pin 4 includes a limiting shaft 41 that passes through both the through hole 14 and the connecting hole 21. The function of the limiting shaft 41 is mainly to position the through holes 14 and the connecting hole 21 at different heights. Through the detachable connection of the safety pin 4, the height of the mounting sleeve 13 on the support cylinder 2 can be quickly adjusted, thereby adjusting the support height of the central lawnmower 1.

[0042] To ensure the stability and reliability of the two components being assembled simultaneously, the safety pin 4 also includes anti-disengagement hooks 42 connected to both ends of the limiting shaft 41. By setting the anti-disengagement hooks 42, a limiting and surrounding form can be formed on the limiting shaft 41, preventing the limiting shaft 41 from disengaging from the through hole 14 and the connecting hole 21.

[0043] In one specific embodiment, the limiting shaft 41 is movably threaded through the through hole 14 and the connecting hole 21, which facilitates quick threading. Meanwhile, the anti-detachment hooks 42 connected to both ends of the limiting shaft 41 include a semi-circular surrounding structure. Furthermore, the anti-detachment hooks 42 and the limiting shaft 41 that simultaneously thread through the through hole 14 and the connecting hole 21 form an integral D-shaped structure, which can ensure the stability and reliability of the limiting to the greatest extent.

[0044] More specifically, the limiting shaft 41 includes a limiting post 43 located at one end. The diameters of the through hole 14 and the connecting hole 21 are the same and smaller than the outer diameter of the limiting post 43. The diameter of the through portion of the limiting shaft 41 in the channel is smaller than the same diameter mentioned above. This facilitates the movable connection while effectively limiting the limiting post 43 exposed in the through hole 14 and the connecting hole 21 on one side in the axial direction.

[0045] The safety pin 4 in this utility model preferably has a D-type structure, which can meet the requirements of stable and reliable separate assembly of the support cylinder 2 and the mounting sleeve 13, while reducing costs.

[0046] In another specific embodiment, from the perspective of the structural composition of the caster wheel 3, the caster wheel 3 includes a roller connecting cylinder 31, a wheel fork 32 and a roller 33. The wheel fork 32 is symmetrically connected to both sides of the roller connecting cylinder 31, and the roller 33 is connected between the wheel forks 32.

[0047] Furthermore, the roller 33 is installed between the two wheel forks 32 via the roller 33 connecting shaft, and the roller connecting cylinder 31 is mainly used for the bottom of the support cylinder 2 to be inserted to realize the assembly between the support cylinder 2 and the universal wheel 3.

[0048] At least a portion of the bottom of the support cylinder 2 is inserted into the roller connecting cylinder 31, and wear-resistant bushings 34 are installed at both the top and bottom ends of the roller connecting cylinder 31. The wear-resistant bushings 34 and the openings at both ends of the top of the roller connecting cylinder 31 can be in an interference fit assembly relationship. The setting of the wear-resistant bushings 34 can alleviate the wear between the support cylinder 2 and the roller connecting cylinder 31, thereby extending the service life of the caster wheel 3.

[0049] The bottom end of the support cylinder 2 protrudes through the wear-resistant bushing 34 located at the bottom. The roller connecting cylinder 31 is provided with a support bearing (not shown in the figure) for assembly with the support cylinder 2. The support bearing is located between the wear-resistant bushings 34.

[0050] From an assembly perspective, the outer ring of the support bearing is fixed inside the roller connecting cylinder 31, and the inner ring of the support bearing is clamped to the support cylinder 2. Thus, the roller connecting cylinder 31, the wheel fork 32, and the roller 33 can rotate freely in a 360° direction relative to the support cylinder 2 when the support cylinder 2 is in a limited connection with the mounting sleeve 13, thereby enabling the centrally mounted lawnmower 1 to follow the tractor's direction of movement.

[0051] To ensure sufficient support height, the connecting block 12 extends upward at an angle from the outside of the body 11, providing a certain height space for the installation of the support roller mechanism.

[0052] Meanwhile, the bottom end of the mounting sleeve 13 is not lower than the bottom wall of the machine body 11. By using this setting method, combined with the support roller mechanism to raise and assemble the mounting sleeve 13, the support height of the support roller mechanism can be guaranteed to the greatest extent, preventing the bottom from rubbing.

[0053] In addition to the casters 3 installed on the main parts of the body 11, auxiliary wheels 5 are also installed at the bottom of the body 11. The auxiliary wheels 5 are distributed at the bottom of the body 11, which provides good assistance for the directional movement of the central lawnmower 1.

[0054] This utility model also provides a center-mounted lawnmower 1, including the support roller mechanism described above. By assembling the support roller mechanism at the bottom of the body 11 of the center-mounted lawnmower 1, the usage of the center-mounted lawnmower 1 can be improved to the greatest extent and the user experience can be enhanced.

[0055] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0056] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A support roller mechanism for supporting and moving the body of a centrally mounted lawnmower, characterized in that, The body includes a connecting block, and the connecting block is provided with an installation sleeve, and the installation sleeve is provided with multiple pairs of through holes at varying heights; The support roller mechanism includes a support cylinder for insertion into the mounting sleeve, and a universal wheel connected to the bottom of the support cylinder. The support cylinder is provided with multiple pairs of connection holes at varying heights. A safety pin is detachably connected between the mounting sleeve and the support cylinder. The safety pin includes a limiting shaft that passes through both the through hole and the connection hole, and anti-disengagement hooks connected to both ends of the limiting shaft.

2. The supporting roller mechanism according to claim 1, characterized in that, The limiting shaft is movably connected through the through hole and the connecting hole, and the anti-detachment hook includes a semi-circular surrounding structure.

3. The supporting roller mechanism according to claim 1, characterized in that, The limiting shaft includes a limiting post located at one end, and the through hole and the connecting hole have the same diameter and are smaller than the outer diameter of the limiting post.

4. The support roller mechanism according to any one of claims 1-3, characterized in that, The omnidirectional wheel includes a roller connecting cylinder, a wheel fork, and a roller. The wheel fork is symmetrically connected to both sides of the roller connecting cylinder, and the roller is connected between the wheel forks.

5. The supporting roller mechanism according to claim 4, characterized in that, At least a portion of the support cylinder is inserted into the roller connecting cylinder, and wear-resistant bushings are installed at both the top and bottom ends of the roller connecting cylinder.

6. The supporting roller mechanism according to claim 5, characterized in that, The bottom end of the support cylinder protrudes from the wear-resistant bushing located at the bottom, and a support bearing is provided inside the roller connecting cylinder, which is located between the wear-resistant bushings.

7. The supporting roller mechanism according to claim 6, characterized in that, The outer ring of the support bearing is fixed inside the roller connecting cylinder, and the inner ring of the support bearing is fixed to the support cylinder by a clamp.

8. The supporting roller mechanism according to claim 1, characterized in that, The connecting block extends upward from the outside of the machine body, and the bottom end of the mounting sleeve is not lower than the bottom wall of the machine body.

9. The supporting roller mechanism according to claim 1, characterized in that, It also includes auxiliary wheels, which are distributed at the bottom of the body.

10. A centrally mounted lawnmower, characterized in that, Includes the support roller mechanism as described in any one of claims 1-9.

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