Height adjusting device of rear walking type edge trimmer

Abstract

The utility model belongs to the technical field of gardening equipment and facilities, and provides a height adjusting device of a rear walking type edge trimmer, which comprises a rotating arm, a connecting arm is arranged on one side of the rotating arm, the connecting arm is of an L-shaped structure, a pull rod assembly is arranged at one end, far away from the rotating arm, of the connecting arm, and a pull plate is arranged at one end, far away from a middle connecting sleeve, of the pull rod assembly. A long-strip-shaped adjusting hole is formed in the pulling plate, a screw rod connected with the back-walking type edge trimmer is arranged in the adjusting hole, two gaskets distributed on the two sides of the pulling plate are arranged on the screw rod, and a clamping handle is arranged at the end, away from the back-walking type edge trimmer, of the screw rod. The turning angles of the connecting arm and the rotating arm can be controlled by pulling the pull rod assembly, so that the elevation angle of the front wheel at the front end of the rear walking type edge trimmer is controlled, the purpose of controlling the working height of a cutter on the rear walking type edge trimmer is achieved, the edge trimming problem of lawns with different heights is solved, the design is reasonable, the structure is simple, adjustment is convenient, and practicability is high. The method is suitable for large-scale popularization.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of gardening equipment and facilities, especially relates to a height adjusting device of back walking type edging machine. BACKGROUND

[0002] Because the traditional manual lawn trimming mode has the problems of low efficiency and high intensity, most of the lawn management adopts motorized equipment to replace manual work. The lawn edging machine is used for trimming the side of the grass or plants at the boundary of the lawn, but the height of the lawn and the roadside is different, and the general lawn edging machine cannot adjust the height, so the utilization rate of the equipment in the actual trimming operation is affected.

[0003] At present, the existing patent CN206575840U discloses a lawn edging machine, which comprises a chassis, a handrail connected with the chassis, an engine and front and rear wheels mounted on the chassis, a cutter box mounted on one side of the chassis, a cutter fixed to one end of a rotating shaft in the cutter box, and a power output of the engine connected with the other end of the rotating shaft through a speed reduction mechanism; the mounting shaft of the front wheel is connected with the chassis through an adjustable rotary arm, and the height of the cutter box bottom fixed to one side of the chassis from the ground is adjusted through the adjustable rotary arm. The actual trimming height of the equipment can be adjusted by adjusting the rotary arm, but the adjustable rotary arm is inconvenient to operate and is not convenient to adjust, and the practicability needs to be improved to ensure the efficiency of the lawn trimming operation. UTILITY MODEL CONTENTS

[0004] In view of the technical problems existing in the above-mentioned lawn edging machine, the utility model provides a back walking type edging machine height adjusting device which is reasonable in design, simple in structure, convenient to adjust and high in practicability.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme that the utility model provides a back walking type edging machine height adjusting device, which comprises a rotary arm, one end of the rotary arm is used for being connected with the front wheel of the back walking type edging machine, one side of the rotary arm is provided with a connecting arm, the connecting arm is in L-shaped structure and the end away from the rotary arm of the connecting arm is provided with a pull rod assembly, the pull rod assembly is provided with a pull plate at the end away from the middle connecting sleeve, the pull plate is provided with a long strip-shaped adjusting hole, the adjusting hole is provided with a screw rod connected with the back walking type edging machine, the screw rod is provided with two gaskets distributed on both sides of the pull plate, and the screw rod is provided with a clamping handle threadedly connected with the end away from the back walking type edging machine.

[0006] As a preferred, the pull rod assembly comprises a lower pull rod connected with the connecting arm, the end of the lower pull rod is provided with a middle connecting sleeve, the middle connecting sleeve is provided with an upper pull rod, and the two ends of the middle connecting sleeve are provided with locking nuts for locking the upper pull rod, the lower pull rod and the middle connecting sleeve.

[0007] As preferred, screw holes are arranged on the connecting arm, and the side surface of the lower pull rod is provided with studs connected with the screw holes.

[0008] As preferred, the central track of the upper pull rod is Z-shaped.

[0009] Compared with the prior art, the height adjustment device for the rear walking type edging machine has the advantages and positive effects that:

[0010] 1. The height adjustment device for the rear walking type edging machine can control the angle of the connecting arm and the rotating arm by adjusting the relative matching position of the pull rod assembly and the screw rod, thereby controlling the angle of the front wheel at the front end of the rear walking type edging machine, and further controlling the working height of the cutter on the rear walking type edging machine, so as to meet the edging problem of the boundary of lawns with different heights, and the device has reasonable design, simple structure, is convenient to adjust and has high practicability, and is suitable for large-scale promotion. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0012] Figure 1 An exploded view of the height adjustment device for the rear walking type edging machine is provided for the embodiment.

[0013] Figure 2 A working diagram of the height adjustment device for the rear walking type edging machine on the rear walking type edging machine is provided.

[0014] Figure 3 A highest position working diagram of the height adjustment device for the rear walking type edging machine is provided.

[0015] Figure 4 A lowest position working diagram of the height adjustment device for the rear walking type edging machine is provided.

[0016] In the above drawings, 1 is a clamping handle, 2 is a gasket, 3 is an upper pull rod, 4 is a locking nut, 5 is a middle connecting sleeve, 6 is a lower pull rod, 7 is a rotating arm, 8 is a pull plate, 81 is an adjusting hole, 9 is a screw rod, 10 is a connecting arm, 11 is a stud, and 12 is a rear walking type edging machine. DETAILED DESCRIPTION

[0017] In order to enable the above objects, features and advantages of the present application to be clearer, further description will be made to the present application with reference to the drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict. For the convenience of description, the following will appear "up", "down", "left", "right" only indicate the same direction as the up, down, left and right of the drawings, and do not limit the structure.

[0018] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can be practiced in other manners different from those described herein, therefore, the present application is not limited to the specific embodiments disclosed in the following description.

[0019] Embodiments, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 The design of the device is matched with the rear walking type trimming machine, and the rear walking type trimming machine is composed of a supporting mechanism, a walking mechanism, a base, a transmission mechanism, a blade, a belt guard, a blade guard and a blade. The supporting mechanism, the base and the walking mechanism are the main supporting parts of the product, the engine is a power output element, the transmission part composed of the belt pulley and the belt drives the blade to rotate as a working part to complete the trimming work, and the belt and the blade high-speed rotating guard plays a safety protection role. On this basis, the height adjusting device of the rear walking type trimming machine provided by the present application comprises a rotating arm 7, one end of the rotating arm 7 is connected with the front wheel and the base of the rear walking type trimming machine 12, one end of the rotating arm 7 is connected with the base, the other end is connected with the front wheel shaft, and a connecting arm 10 is arranged on one side of the rotating arm 7, the connecting arm 10 is in L-shaped structure and an end away from the rotating arm 7 is provided with a pull rod assembly, the pull rod assembly is provided with a pull plate 8 at an end away from the middle connecting sleeve 5, the pull plate 8 is provided with a long strip-shaped adjusting hole 81, the adjusting hole 81 is provided with a screw rod 9 connected with the rear walking type trimming machine 12, the screw rod 9 is provided with two gaskets 2 distributed on both sides of the pull plate 8, and the screw rod 9 is provided with a clamping handle 1 threadedly connected with the screw rod 9 at an end away from the rear walking type trimming machine 12.

[0020] Specifically, the screwing depth of the clamping handle 1 with the screw rod 9 can affect the positioning effect of the pull rod assembly, the rotation of the clamping handle 1 to the direction close to the handrail structure can clamp the pull rod assembly on the handrail structure, and the rotation of the clamping handle 1 to the direction slightly away from the handrail structure can make the pull rod assembly have a certain activity freedom. By adjusting the relative matching position of the pull rod assembly and the screw rod 9, the rotation angle of the connecting arm 10 and the rotating arm 7 can be controlled, and the rotating arm 7 drives the front wheel to rotate around the shaft joint node on the base, so as to control the inclination angle of the front wheel at the front end of the rear walking type edging machine 12. Since the relative position of the edging tool and the base of the rear walking type edging machine 12 is unchanged, the height of the front wheel changes, the ground clearance of the front end of the base changes, and therefore the height of the edging tool changes, thereby achieving the purpose of controlling the working height of the tool on the rear walking type edging machine 12, and meeting the problem of edging the boundary of lawns of different heights. Under the premise that the clamping handle 1 is loosened, the upper pull rod 5 can be pushed back and forth in the adjustment range, the height can be freely adjusted to the most suitable height of the blade (80mm-50mm), the design is reasonable, the structure is simple, the adjustment is convenient, and the practicability is high.

[0021] In order to improve the utilization rate of the pull rod assembly, the pull rod assembly comprises a lower pull rod 6 connected with the connecting arm 10, the end of the lower pull rod 6 is provided with a middle connecting sleeve 5, the middle connecting sleeve 5 is provided with an upper pull rod 5, and the two ends of the middle connecting sleeve 5 are provided with locking nuts 4 for locking the upper pull rod 5, the lower pull rod 6 and the middle connecting sleeve 5. The upper pull rod 5 and the lower pull rod 6 can be inserted into the middle connecting sleeve 5 in a telescopic manner, and then locked by the locking nuts 4, or connected with the middle connecting sleeve 5 in a threaded connection manner. The combined length of the upper pull rod 5, the middle connecting sleeve 5 and the lower pull rod 6 can be adjusted and controlled by adjusting the relative positions of the three, so as to adjust the actual arm of the operating rotating arm 7, and then facilitate the height adjustment of the edging tool. Furthermore, the telescopic and adjustable pull rod assembly can be conveniently disassembled when the device is packed, so as to reduce the space required after the device is packed.

[0022] In order to conveniently connect the pull rod assembly and the connecting arm 10, the connecting arm 10 is provided with a screw hole, the side surface of the lower pull rod 6 is provided with a screw column 11 connected with the screw hole, the screw column 11 is welded with the lower pull rod 6, and the lower pull rod 6 is installed on the connecting arm 10 through the screw column 11 and the screw hole, and maintains a reasonable horizontal distance with the rotating arm 7, so as to meet the space overall planning requirement of the device and the rear walking type edging machine 12, and does not affect the transmission of the blade.

[0023] In order to improve the space matching effect of the pull rod assembly and the rear walking type trimming machine 12, and considering the force arm span requirement of the upper pull rod 5, the center trajectory of the upper pull rod 5 is Z-shaped, and a large slope fillet design is adopted at the length turning position of the upper pull rod 5, so that other mechanical parts on the rear walking type trimming machine 12 can be effectively avoided, and the basic requirement of the front and rear adjustment function of the pull rod assembly can be ensured.

[0024] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technology content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made on the basis of the technical essence of the present application to the above embodiments still belongs to the protection scope of the technical scheme of the present application.

Claims

1. A height adjustment device for a trailing trimmer, comprising a rotating arm, one end of which is adapted to be connected to a front wheel of the trailing trimmer, characterised in that, One side of the rotating arm is provided with a connecting arm, the connecting arm is in L-shaped structure and the end away from the rotating arm is provided with a pull rod assembly, the pull rod assembly is provided with a pull plate at the end away from the middle connecting sleeve, the pull plate is provided with a long strip-shaped adjusting hole, the adjusting hole is provided with a screw rod connected with the rear walking edge trimmer, the screw rod is provided with two gaskets distributed on both sides of the pull plate, and the screw rod is provided with a clamping handle screwed with the screw rod at the end away from the rear walking edge trimmer.

2. A height adjustment device for a trailing trimmer according to claim 1, wherein The pull rod assembly comprises a lower pull rod connected with the connecting arm, the end of the lower pull rod is provided with a middle connecting sleeve, the middle connecting sleeve is provided with an upper pull rod, and the two ends of the middle connecting sleeve are provided with locking nuts for locking the upper pull rod, the lower pull rod and the middle connecting sleeve.

3. A height adjustment device for a trailing trimmer according to claim 2, wherein The connecting arm is provided with a screw hole, and the side of the lower pull rod is provided with a screw post connected with the screw hole.

4. A height adjustment device for a trailing trimmer according to claim 3, wherein The central track of the upper pull rod is in Z-shaped structure.

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