CN220383609U - Multi-cutter head full-coverage convenient grass mowing machine - Google Patents

Abstract

A multi-cutter head full-coverage convenient grass mowing machine solves the problem that a variable environment cannot be applied. The grass cutting machine comprises a supporting rod, a handle arranged at the upper end of the supporting rod, and an electric cutter head unit arranged at the lower end of the supporting rod, wherein the middle part of the supporting rod is a handheld part, an electric control circuit, a start-stop switch and a lithium battery are arranged on the handle, two gears meshed with each other are movably connected on the supporting rod through steel pins, an auxiliary rod piece is welded and fixed on the two gears respectively, the electric cutter head unit is arranged at the free end of the auxiliary rod piece, and one auxiliary rod piece is driven to rotate, namely the two auxiliary rod pieces are driven to synchronously act outwards or inwards; and a set of locking mechanism for locking the positions of the two gears is arranged on the supporting rod. The multi-bit grass cutter can start one, two or three units to work according to the requirement, so that the multi-bit grass cutter is suitable for different lawn environments.

Description

Multi-cutter head full-coverage convenient grass mowing machine

Technical Field

The utility model relates to the technical field of grass mowers widely used in expressway maintenance.

Background

In the maintenance work of the expressway, the short grass and shrubs in the side slope and the green belt need to be corrected, and through statistical analysis, the grass and the shrubs need to be respectively operated by using different cutters or saws. The portable grass trimmer of hand-held type is used at present, for single-head structure, need to change blade or saw bit in the tool bit module to different grasslands and shrubs, change blade operating time longer, and there is the risk.

On the other hand, the existing grass trimmer only has one cutter head, and in order to increase the cruising ability of the grass trimmer, the existing grass trimmer is provided with a lithium battery with large capacity, and the weight of the existing lithium battery module is more than three times that of the cutter head module after weighing, so that the problem that the head (cutter head) is light in weight and the foot (lithium battery) is heavy exists.

Disclosure of Invention

The utility model aims to develop a multi-cutter head full-coverage convenient grass trimmer, can start the grass trimmer head unit of different functions according to the environment of beating grass of difference to possess adjustable tool bit height, the function of angle, with efficiency and the progress that improves construction unit and carry out weeding operation.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a portable grass cutting machine of full cover of many tool bits, includes the bracing piece and installs the handle in the bracing piece upper end and install the electronic tool bit unit in the bracing piece lower extreme, is handheld position in the middle part of this bracing piece, wherein, be provided with electronic circuit, start-stop switch and lithium cell on the handle, its characterized in that: the support rod is movably connected with two gears meshed with each other through a steel pin, an auxiliary rod piece is welded and fixed on the two gears respectively, an electric cutter head unit is arranged at the free end of the auxiliary rod piece, and one auxiliary rod piece is driven to rotate, so that the two auxiliary rod pieces are driven to synchronously act outwards or inwards; and a set of locking mechanism for locking the positions of the two gears is arranged on the supporting rod.

Further, the locking mechanism comprises a push rod, a pressure spring and a sliding sleeve, wherein the lower end of the push rod is of a pointed structure, the pointed structure is provided with two arc-shaped surfaces which are attached to the outer contour surfaces of the gears, the arc-shaped surfaces are provided with tooth-shaped protrusions, the tooth-shaped protrusions are embedded into tooth grooves of the two meshed gears, and the two gears are locked through embedding.

Further, the other end of the push rod is provided with a pressure spring, the pressure spring is arranged in the inner cavity of the support rod, and the upper end of the pressure spring is matched with a stop block in the support rod; under the constraint of the pressure spring and the inner cavity wall of the supporting rod, the lower end tip-shaped structure of the pushing rod is firmly abutted against the conical space of the two gears.

Further, the sliding sleeve is sleeved on the outer side of the supporting rod, a sliding groove is formed in the pipe wall of the supporting rod corresponding to the sliding space where the sliding sleeve is located, and the sliding groove is a linear sliding groove and extends along the axial direction.

Further, a steel pin is arranged between the sliding sleeve and the push rod, the steel pin penetrates through the sliding sleeve, the push rod and the sliding groove, and the sliding sleeve and the push rod are fixedly connected into a whole through the steel pin.

Further, the handheld part is an annular hanging ring, the hanging ring is fixed on the supporting rod in a clamping mode and is fastened by a clamping bolt, and the position of the hanging ring is adjustable. Further, the supporting rods and the auxiliary rod pieces are stainless steel tubes.

Further, the cutters arranged in the three electric cutter head units are one or a combination of a plurality of nylon ropes, plastic cutters, stainless steel cutters or saw blades.

The beneficial effects of the utility model are as follows:

1. the construction efficiency is improved: the traditional grass trimmer uses a single blade, has limited effect in different environments, and needs to frequently replace a large piece for operation aiming at different use environments. The multi-bit grass cutter can start one, two or three units to work according to the requirement, so that the multi-bit grass cutter is suitable for different lawn environments. For example, nylon ropes and plastic blades are suitable for short grass, stainless steel blades are suitable for high-density lawns, saw blades are suitable for shrubs, and an operator can select appropriate unit modules for different lawn conditions through a change-over switch, so that grass cutting efficiency is improved.

2. Improving operability and adaptability: the multi-bit grass trimmer has the functions of adjusting the height of the bit and adjusting the angle, can be flexibly adjusted according to actual conditions, and is suitable for lawns with different heights. The construction method provides higher operability and adjustability for constructors, so that the construction method can be better adapted to different weeding scenes, and the efficiency of construction units is improved.

3. The cost and the resource utilization rate are reduced: because the grass trimmer can start different types of blades in real time according to actual conditions, the low-cost plastic blades can be selected for weeding the low grass without using the stainless steel blades with high wear resistance. Therefore, the performance advantages of blades with different materials and different structures are fully exerted, the maintenance cost of the grass trimmer is reduced, and the resources can be effectively utilized.

4. Protecting lawn ecology: the flexibility and the adjustability of the grass trimmer enable constructors to more accurately manage different types of lawns, and unnecessary injuries are avoided. The plastic blade can reduce the damage to the lawn ecology, and the stainless steel blade has a better mowing effect, so that the lawn is kept clean and healthy.

5. One-key switching can be realized through an electric control button switch, and convenience is high.

In summary, the grass trimmer can improve the working efficiency of a construction unit.

Drawings

Fig. 1 is a perspective view of the present utility model.

Fig. 2 is a front view of the present utility model.

Fig. 3 is a cross-sectional view (partial) of the present utility model.

Fig. 4 is a use state diagram of the present utility model.

In the figure:

10 supporting rods, 11 hand-held parts, 12 stop blocks,

20 an electric tool bit unit, 21 is connected in a hinged manner,

30 handles, 31 start-stop switches, 32 lithium batteries,

40 auxiliary rod pieces, 41 gears, 42 steel pins,

51 push rod, 511 pointed structure, 52 compression spring, 53 sliding sleeve, 54 spout, 55 steel pin.

Detailed Description

Referring to fig. 1 to 3, the grass trimmer is a multi-cutter head grass trimmer, is provided with three electric cutter head units, can be configured as required, and can adjust included angles among the three electric cutter head units. For example, stainless steel blades may be provided in the two side electric cutter units for mowing tall grass, while plastic blades may be provided in the middle electric cutter unit for mowing short grass.

And (3) a switching system: through the convenient blade switching system of design, the user can easily switch different unit modules to adapt to different grass cutting environment. For example, when it is desired to switch from cutting low grass to cutting high grass, the user simply switches to the middle stainless steel blade for actuation.

Tool bit height adjustment: in order to cope with different terrains and lawn heights, the height of the cutter head is adjustable, in particular, the height of the blade can be adjusted by a rotatable hinged connection between the electric cutter head unit and the support bar, i.e. by the hinged connection.

Tool bit angle adjustment is realized through adjusting the contained angle between three unit modules.

The electric tool bit unit can be selected and matched by a commercially available forming module.

The detailed description is made with reference to the accompanying drawings. The following improvements are made on the basis of the tradition:

the support rod 10 is a long rod, two ends of the support rod are respectively provided with an electric cutter head unit and a handle, so that a main body of the mower is formed, and one innovation is that the traditional single cutter head design is changed into a three-cutter head design.

The included angle between the three electric tool bit units 20 is adjustable, specifically, the three electric tool bit units are respectively marked as a main tool bit unit and a left tool bit unit and a right tool bit unit which are positioned at the left side and the right side, wherein, a supporting rod 10 corresponding to the main tool bit unit is a fixed rod, namely, the position is fixed, the supporting rod is also a hand-held rod of the grass cutting machine, the other end of the supporting rod 10 is a handle 30, an electric control circuit, a start-stop switch 31 and a lithium battery 32 are arranged on the handle 30, the start-stop switch is three, the electric drive modules in the three electric tool bit units are respectively controlled, the middle part of the supporting rod 10 is a hand-held part 11, the hand-held part is an annular lifting ring, the lifting ring is fixed on the supporting rod in a clamping mode and can be fastened through a clamping bolt, when the grass cutting tool is used, the right hand of an operator controls the handle and performs electric operation, and the left hand controls the lifting ring and the ground leaving height of a grass cutting blade, and referring to fig. 4.

The left and right cutter head units are respectively arranged on the auxiliary rod pieces 40 on two sides through the hinged connection 21, the other ends of the two auxiliary rod pieces 40 are respectively welded and fixed on one gear 41, the two gears are identical in size, the two gears 41 are rotatably arranged at the middle lower position of the supporting rod 10 through the steel pin 42, the two gears 41 are rotatable and are in a meshed state, it is easy to understand that one auxiliary rod piece is driven to rotate and can drive the two auxiliary rod pieces to synchronously move outwards or inwards, and the synchronous movement of the two driving units on two sides is realized. Namely, the asynchronous folding or synchronous opening action is realized, and the control of the spacing opening and closing of the three electric cutter head units is realized through the structure.

The locking mechanism for locking the two gears comprises a push rod 51, a pressure spring 52 and a sliding sleeve 53, wherein the lower end of the push rod 51 is provided with a pointed structure 511, and a conical space formed by meshing the two gears is formed on the pointed structure for fitting, that is, the pointed structure 511 is provided with two arc-shaped surfaces which are fit with the outer contour surfaces of the gears, the arc-shaped surfaces are provided with tooth-shaped protrusions, and the tooth-shaped protrusions can be embedded into tooth grooves of the two meshed gears and lock the two gears. The other end (upper end) of the push rod is provided with a pressure spring 52, the pressure spring is arranged in the inner cavity of the support rod, the upper end of the pressure spring is matched with a stop block 12 (the stop block is embedded in the inner cavity of the support rod and firmly bonded) in the support rod 10, and the push rod 51 is firmly abutted against conical spaces of two gears and meshed with the two gears under the restraint of the pressure spring and the inner cavity wall of the support rod, so that the position locking of the gears is realized. The sliding sleeve 53 is sleeved on the outer side of the corresponding supporting rod, a sliding groove 54 is formed in the pipe wall of the supporting rod (stainless steel pipe) corresponding to the sliding space where the sliding sleeve 53 is located, and the sliding groove is a linear sliding groove and extends along the axial direction. The steel pin 55 is arranged between the sliding sleeve and the push rod, and penetrates through the sliding sleeve, the push rod and the sliding groove, that is, the sliding sleeve and the push rod are fixedly connected into a whole through the steel pin, namely, the push rod can be operated and driven to slide upwards through sliding the sliding sleeve, the compression spring is compressed in the upward sliding process, the compression spring is compressed, the lower end of the push rod is separated from the two gears, the included angle beta of the two auxiliary rods 51 can be conveniently adjusted after the separation, otherwise, the push rod is reset under the action of the compression spring after the sliding sleeve is released, and the position locking of the two meshed gears is realized.

In the present technology, among three electric cutter head units, the following cutter blade combinations are arranged:

in combination, stainless steel blades can be arranged in the electric cutter head units at two sides for cutting tall grass and shrubs, and plastic blades can be arranged in the electric cutter head units in the middle for cutting short grass.

And in the second combination, the cutter heads at the two sides are provided with durable plastic blades, and the cutter heads in the middle are stainless steel blades. This design provides our grass trimmer with the ability to accommodate lawns and shrubs of different heights.

And thirdly, the cutter heads on the two sides are provided with durable nylon ropes (used as blades), and the middle cutter head adopts a stainless steel blade. This design provides our grass trimmer with the ability to accommodate lawns and shrubs of different heights.

In the combined use, the three electric tool bit units can respectively and independently control the work and can also synchronously work, wherein the synchronous work refers to the synchronous work of the three electric tool bit units, so that the construction unit can more efficiently perform weeding operation. The construction time can be saved, the labor intensity of constructors can be reduced, and the construction efficiency is greatly improved.

The grass trimmer is designed with the aim of convenient operation. The start and stop are controlled by the operation switch respectively, and the circuit switching is simple and easy to implement, so that a user can quickly prepare for work. Meanwhile, after the three cutter head units are applied, the overall weight and balance of the grass trimmer are optimized, so that the burden in operation is reduced, and the operability is improved.

In summary, the grass trimmer can improve the construction efficiency, save the cost, improve the working environment and increase the customization. Is paid attention to various construction units and agricultural and horticultural fields.

The above examples are provided for illustrating the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and those skilled in the art should not depart from the spirit of the present utility model in all kinds of modifications and improvements that fall within the scope of the present utility model as defined in the appended claims.

Claims (8)

1. The utility model provides a portable grass cutting machine of full cover of many tool bits, includes the bracing piece and installs the handle in the bracing piece upper end and install the electronic tool bit unit in the bracing piece lower extreme, is handheld position in the middle part of this bracing piece, wherein, be provided with electronic circuit, start-stop switch and lithium cell on the handle, its characterized in that: the support rod is movably connected with two gears meshed with each other through a steel pin, an auxiliary rod piece is welded and fixed on the two gears respectively, an electric cutter head unit is arranged at the free end of the auxiliary rod piece, and one auxiliary rod piece is driven to rotate, so that the two auxiliary rod pieces are driven to synchronously act outwards or inwards; and a set of locking mechanism for locking the positions of the two gears is arranged on the supporting rod.

2. The multi-cutter full-coverage convenient grass cutting machine according to claim 1, wherein the locking mechanism comprises a push rod, a pressure spring and a sliding sleeve, wherein the lower end of the push rod is of a pointed structure, the pointed structure is provided with two arc surfaces which are attached to the outer contour surfaces of gears, the arc surfaces are provided with tooth-shaped protrusions, the tooth-shaped protrusions are embedded into tooth grooves of two meshed gears, and the two gears are locked by the embedding.

3. The multi-cutter-head full-coverage convenient grass mower according to claim 2, wherein a pressure spring is arranged at the other end of the push rod, the pressure spring is arranged in an inner cavity of the support rod, and the upper end of the pressure spring is matched with a stop block in the support rod; under the constraint of the pressure spring and the inner cavity wall of the supporting rod, the lower end tip-shaped structure of the pushing rod is firmly abutted against the conical space of the two gears.

4. The multi-cutter-head full-coverage convenient grass mower according to claim 3, wherein the sliding sleeve is sleeved on the outer side of the supporting rod, a sliding groove is formed in the pipe wall of the supporting rod corresponding to the sliding space where the sliding sleeve is located, and the sliding groove is a linear sliding groove and extends along the axial direction.

5. The full-coverage portable grass cutter with multiple cutter heads according to claim 4, wherein a steel pin is arranged between the sliding sleeve and the push rod, the steel pin penetrates through the sliding sleeve, the push rod and the sliding chute, and the sliding sleeve and the push rod are fixedly connected into a whole through the steel pin.

6. The multi-cutter-head full-coverage convenient grass mower according to claim 1, wherein the handheld part is an annular hanging ring, the hanging ring is fixed on the supporting rod in a clamping mode, and is fastened by a clamping bolt and the position is adjustable.

7. The multi-cutter full-coverage convenient grass trimmer of claim 1, wherein the support bar and the auxiliary rod are stainless steel tubes.

8. The full-coverage portable grass cutter of claim 1, wherein the cutters mounted in the three electric cutter head units are one or a combination of more of nylon ropes, plastic cutters, stainless steel cutters or saw blades.