CN108617230B

CN108617230B - Height adjusting mechanism of hand-push type mower for gardens

Info

Publication number: CN108617230B
Application number: CN201810274325.7A
Authority: CN
Inventors: 段沛荣; 吴鑫; 理查德旺斯
Original assignee: Individual
Current assignee: Xiamen Changyuan Garden Co ltd
Priority date: 2018-03-29
Filing date: 2018-03-29
Publication date: 2020-03-13
Anticipated expiration: 2038-03-29
Also published as: CN108617230A

Abstract

According to the height adjusting mechanism and the locking mechanism of the hand-push type mower for gardens, the cutting mechanism is arranged in front of the lower section of the frame, the cutting mechanism is movably mounted on the frame and can slide along the vertical direction relative to the frame, the height adjusting mechanism comprises the long rod and the short rod, the bottom of the long rod is hinged to the top of the cutting mechanism, the bottom of the short rod is hinged to the rear of the lower section of the frame, the top of the short rod is hinged to the middle section of the long rod, and the projections of the long rod and the short rod along the vertical direction are overlapped. The invention has the advantages that the height adjustment is realized mainly through the lever action of the long rod and manual driving without the cooperation of other power systems, so the structure is simpler, more efficient and more practical, and the whole weight of the mower is lighter after the power system is saved, thereby reducing the physical consumption of workers.

Description

Height adjusting mechanism of hand-push type mower for gardens

Technical Field

The invention relates to the field of mowers, in particular to a height adjusting structure of a hand-push type mower for gardens.

Background

With the increase of urban greening area, the lawn industry rises rapidly, the maintenance of the lawn is a matter which consumes physical power, in the past, the lawn is mowed by manually holding tools such as a sickle, and the like, but the lawn is gradually eliminated due to overhigh labor cost and large labor amount. With the development of mechanization, mowers, also called weeders, lawnmowers, lawn trimmers, etc., have been invented. The mower is a mechanical tool for trimming lawn and vegetation, and is composed of cutter head, engine, walking wheels, walking mechanism, blades, handrail and control unit. The cutter head is arranged on the travelling wheel, the engine is arranged on the cutter head, the blade is arranged on the output shaft of the engine, the blade is greatly improved in speed by utilizing the high-speed rotation of the engine, the operation time of weeding workers is saved, and a large amount of manpower resources are reduced.

CN204443111U discloses a hand-push type mowing vehicle, which comprises a frame, a cutting mechanism and a height adjusting mechanism, wherein the height of the mowing machine is determined by the ground clearance of a blade, the height adjusting mechanism comprises a frame, a cutting mechanism and a height adjusting mechanism, the height adjusting mechanism comprises two groups of lifting rods which are respectively arranged at two sides of the frame and used for supporting an upper vehicle plate to lift, a lifting cylinder which is arranged at one side of the frame and used for driving the lifting rods to lift and a speed reducer which is fixed on the upper surface of a lower vehicle plate and used for transmitting power, the height adjusting mechanism is arranged between the upper vehicle plate and the lower vehicle plate of the frame, an included angle α between a first supporting rod and a second supporting rod which are hinged in a crossed mode is changed under the effect of the lifting cylinder, the distance between the upper vehicle plate and the lower vehicle plate is changed so as to realize the lifting of the upper vehicle plate, and meanwhile, the cutting mechanism connected to the lower surface of the upper vehicle plate is lifted and lifted along with the upper vehicle plate.

The mower has the advantages of wide application range, convenience in use and good stability, but the power of the mower mainly applies the air cylinder, the power is transmitted to the connecting rod through the lifting air cylinder to move up and down, the reducer transmits the power to the connecting rod to enable the connecting rod to move horizontally, the rollers of the two second supporting rods are driven to roll in the sliding grooves, so that the included angle α between the first supporting rod and the second supporting rods is changed, in order to be matched with the air cylinder, a pneumatic system is required to be installed on the frame to be used for providing air source for the air cylinder and controlling the action of the air cylinder, the size and the mass of the whole pneumatic system are quite large compared with those of a movable mower, the mower is difficult to walk through manual pushing, the control precision is low due to the fact that the air cylinder is adopted for driving, finally, the effective positioning effect is lacked, the establishment of the included angle α between the first supporting rod and the second supporting rod is completely controlled by the telescopic distance of the lifting air cylinder, and after the included angle α is established.

Disclosure of Invention

The invention aims to provide a hand-push type mower for gardens, which aims to solve the problems in the background technology.

The technical scheme of the invention is as follows: including frame, cutting mechanism, height control mechanism and locking mechanism, cutting mechanism locates the hypomere the place ahead of frame, and cutting mechanism movable mounting is on the frame, and cutting mechanism can for the frame slides along vertical direction, and height control mechanism includes stock and quarter butt, and the stock bottom articulates cutting mechanism's top, and the bottom of quarter butt articulates the hypomere rear of frame, the top of quarter butt articulate the middle section at the stock, and stock and quarter butt overlap along the projection of vertical direction mutually, and the top of stock can use the quarter butt to drive the cutting mechanism who connects in the stock bottom for supporting under the external drive for the frame makes elevating movement, and locking mechanism fixes on the frame, locking mechanism with cutting mechanism cooperatees and is used for fixing a position to cutting mechanism.

In a preferred embodiment of the present invention, the frame includes a main frame and an armrest; the main frame comprises a plurality of square tubes, a plurality of corner connectors and bolts are arranged among the square tubes, and the square tubes are connected into a whole through the corner connectors and the bolts to form the main frame with a horizontal frame structure; the main frame is provided with four wheels; the handrail includes a plurality of pipes, is equipped with a plurality of angle sign indicating numbers and bolt between a plurality of pipes, and a plurality of pipes pass through the angle sign indicating number, the bolt is even as an organic whole, the handrail passes through the angle sign indicating number, the bolt fastening is on the main frame to the handrail sets up to the main frame rear slope upwards.

In a preferred embodiment of the invention, the cutting mechanism comprises an upper support plate, a lower support plate, an engine, a blade and four connecting columns, wherein the upper support plate and the lower support plate are arranged at intervals up and down, the four connecting columns are distributed between the upper support plate and the lower support plate in a matrix manner, the bottoms of the connecting columns are welded on the lower support plate, the tops of the connecting columns are fixed on the upper support plate through bolts, the engine is fixed on the upper end surface of the lower support plate, the blade is arranged below the lower support plate, a main shaft of the engine is arranged downwards, the main shaft of the engine penetrates below the lower support plate, and the blade is fixed on the.

In a preferred embodiment of the present invention, the cutting mechanism is disposed inside the main frame, the lower supporting plate has outer edges extending to two sides of the main frame, and the outer edges and the square tubes at two sides below the main frame form a limit fit.

In a preferred embodiment of the present invention, the cutting mechanism is disposed inside the main frame, a total of four guiding sleeves are disposed on the inner side of the square tube on two sides above the main frame, the guiding sleeves are fixed on the square tube through bolts, the four guiding sleeves are respectively disposed corresponding to one connecting column, the connecting column is inserted into the guiding sleeves, and the connecting column and the guiding sleeves form a guiding fit.

In a preferred embodiment of the invention, the locking mechanism comprises four locking discs in total arranged on the upper end surfaces of square tubes on two sides above the main frame, the square tubes are provided with vertical shafts for mounting the locking discs, and the locking discs are rotatably arranged on the vertical shafts; every locking dish all corresponds a spliced pole setting, all is equipped with the tooth's socket that sets up along self axial on every spliced pole, and the outer border of locking dish can block and in the tooth's socket, has seted up the unblock breach on the outer border of locking dish, and locking mechanism is still including being used for the drive four synchronous pivoted drive arrangement of locking dish, drive arrangement are used for driving four locking dishes and rotate, make the outer border block of locking dish in the tooth's socket of spliced pole separately, perhaps make the unblock breach of locking dish intersect with the spliced pole in the ascending projection of vertical side.

In a preferred embodiment of the present invention, the driving device includes four synchronizing wheels, a synchronizing belt and a driving motor, the four synchronizing wheels are integrally formed on one locking disc respectively, the synchronizing belt is connected to the four synchronizing wheels, and the driving motor is fixed on the main frame and is in transmission connection with any one of the locking discs.

In a preferred embodiment of the present invention, four traction wheels are disposed outside the four synchronous wheels, the traction wheels are rotatably disposed on the main frame, and the synchronous belt is sleeved on the four traction wheels.

The invention provides a hand-push type mower for gardens through improvement, which has the following improvements and advantages compared with the prior art:

the height adjustment is realized mainly through the lever action of the long rod and through manual driving, and other power systems are not needed for matching, so that the structure is simpler, more efficient and more practical, and the whole weight of the mower is lighter after the power system is saved, and the physical consumption of workers can be reduced; the cutting mechanism is also provided with a locking mechanism, the cutting mechanism can be positioned after the height of the cutting mechanism is established, the locking mechanism drives four locking discs to synchronously rotate through a driving motor, the locking discs can be clamped with or separated from the cutting mechanism to realize locking or unlocking, and the driving motor can be kept in the current state after the cutting mechanism is positioned and is powered off, so that unnecessary energy consumption is avoided.

Drawings

The invention is further explained below with reference to the figures and examples:

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1, and is also a structural schematic diagram of the locking mechanism of the present invention in a locked state;

FIG. 3 is an enlarged view at B in FIG. 1;

FIG. 4 is a schematic side view of the present invention;

FIG. 5 is a schematic plan view of the cutting mechanism of the present invention at a lower elevation;

FIG. 6 is a schematic plan view of the cutting mechanism of the present invention at a higher elevation;

FIG. 7 is a schematic diagram comparing FIGS. 5 and 6;

FIG. 8 is a schematic perspective view of the cutting mechanism of the present invention at a higher elevation;

FIG. 9 is an enlarged view taken at C in FIG. 8, and is also a structural schematic view of the locking mechanism of the present invention in an unlocked state;

description of reference numerals:

the cutting machine comprises a frame 1, a main frame 1a, a square pipe 1a1, an armrest 1b, a round pipe 1b1, an angle connector 1c, a cutting mechanism 2, an upper supporting plate 2a, a lower supporting plate 2b, an outer edge 2b1, an engine 2c, a blade 2d, a connecting column 2e, a tooth groove 2e1, a height adjusting mechanism 3, a long rod 3a, a short rod 3b, a locking mechanism 4, a locking disc 4a, an unlocking notch 4a1, a vertical shaft 4b, a guide sleeve 5, a synchronizing wheel 6a, a synchronizing belt 6b, a driving motor 6c and a traction wheel 6 d.

Detailed Description

The present invention will be described in detail with reference to fig. 1 to 9, and the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a hand-push type mower for gardens through improvement, as shown in figures 1-9, comprising a frame 1, a cutting mechanism 2, a height adjusting mechanism 3 and a locking mechanism 4, wherein the cutting mechanism 2 is arranged in front of the lower section of the frame 1, the cutting mechanism 2 is movably arranged on the frame 1, the cutting mechanism 2 can slide along the vertical direction relative to the frame 1, the height adjusting mechanism 3 comprises a long rod 3a and a short rod 3b, the bottom of the long rod 3a is hinged on the top of the cutting mechanism 2, the bottom of the short rod 3b is hinged behind the lower section of the frame 1, the top of the short rod 3b is hinged on the middle section of the long rod 3a, the projections of the long rod 3a and the short rod 3b along the vertical direction are overlapped, the top of the long rod 3a can drive the cutting mechanism 2 connected on the bottom of the long rod 3a to move up and down relative to the frame 1 by using the short rod 3b as a support, the locking mechanism 4 is fixed on the frame 1, and the locking mechanism 4 is matched with the cutting mechanism 2 to be used for positioning the position of the cutting mechanism 2.

The principle of the invention is as follows: install the activity of cutting mechanism 2 on frame 1, make cutting mechanism 2 slide along vertical direction with frame 1 relatively, can go up and down promptly, cutting mechanism 2's lift power is provided through high adjustment mechanism 3, high adjustment mechanism 3 comprises stock 3a and quarter butt 3b, when carrying out height control, pull stock 3a top through the manual work, make the top of stock 3a use quarter butt 3b for supporting the perk or pushing down, through lever principle, drive cutting mechanism 2 of stock 3a bottom for frame 1 is vertical ascending or descending, make hand propelled mowing car can adjust mowing height. Compared with the prior art, the height adjustment of the mower is realized by manual driving mainly through the lever action of the long rod 3a and does not need the cooperation of other power systems, so that the mower is simpler, more efficient and more practical in structure, and the whole weight of the mower is lighter after the power system is omitted, thereby reducing the physical consumption of workers. The invention is additionally provided with a locking mechanism 4, which is positioned after the height of the cutting mechanism 2 has been established.

Referring to fig. 1 and 4, the frame 1 includes a main frame 1a and an armrest 1 b; the main frame 1a comprises a plurality of square tubes 1a1, a plurality of corner connectors 1c and bolts are arranged among the square tubes 1a1, and the square tubes 1a1 are connected into a main frame 1a with a horizontal frame structure through the corner connectors 1c and the bolts; four wheels are installed on the main frame 1 a; the handrail 1b comprises a plurality of round pipes 1b1, a plurality of corner connectors 1c and bolts are arranged among the round pipes 1b1, the round pipes 1b1 are connected into a whole through the corner connectors 1c and the bolts, the handrail 1b is fixed on the main frame 1a through the corner connectors 1c and the bolts, and the handrail 1b is arranged obliquely upwards towards the rear of the main frame 1 a. The frame 1 of the invention is assembled by adopting the square pipe 1a1 and the round pipe 1b1, and is simpler, more practical and more portable in structure.

Referring to fig. 1 and 8, cutting mechanism 2 includes backup pad 2a, bottom suspension fagging 2b, engine 2c, blade 2d and four spliced poles 2e, go up backup pad 2a and bottom suspension fagging 2b and separate the setting from top to bottom, four spliced pole 2e is the matrix distribution between last backup pad 2a and bottom suspension fagging 2b, and the welding of spliced pole 2e bottom is in on bottom suspension fagging 2b, the bolt fastening is passed through at spliced pole 2e top on last backup pad 2a, and engine 2c is fixed on bottom suspension fagging 2b up end, and the bottom suspension fagging 2b below is located to blade 2d, and the main shaft of engine 2c sets up down, and the main shaft of engine 2c is worn to bottom suspension fagging 2b below, and blade 2d is fixed on the main shaft. The blade 2d is driven by the engine 2c to rotate at a high speed, so that cutting is realized.

Referring to fig. 1 and 8, the cutting mechanism 2 is disposed inside the main frame 1a, the lower support plate 2b is provided with outer edges 2b1 extending towards two sides of the main frame 1a, and the outer edges 2b1 form a limit fit with the square tubes 1a1 on two sides below the main frame 1 a; because the lifting of the cutting mechanism 2 is controlled by the long rod 3a, when the top of the long rod 3a is pulled by a user to tilt, the tilting angle is too large, so that the cutting mechanism 2 descends too low, and the blade 2d is impacted on the ground, and the design meaning of the outer edge 2b1 is that when the cutting mechanism 2 descends to a certain height, the outer edges 2b1 on the two sides of the lower supporting plate 2b abut against the square tubes 1a1 on the two sides below the main frame 1a, so that the damage of the blade 2d caused by the contact of the cutting mechanism 2 with the ground can be avoided.

Referring to fig. 1 and 2, inside cutting mechanism 2 located main frame 1a, the square pipe 1a1 inboard of main frame 1a top both sides was equipped with four uide bushing 5 in total, and uide bushing 5 passes through the bolt fastening on square pipe 1a1, four uide bushing 5 correspond a spliced pole 2e setting respectively, and spliced pole 2e alternates on uide bushing 5, and spliced pole 2e constitutes the direction cooperation with uide bushing 5, leads through uide bushing 5 to cutting mechanism 2's lift.

Referring to fig. 1, 2, 8 and 9, the locking mechanism 4 includes a total of four locking discs 4a arranged on the upper end surface of a square tube 1a1 on two sides above a main frame 1a, a vertical shaft 4b for mounting the locking discs 4a is arranged on the square tube 1a1, and the locking discs 4a are rotatably arranged on the vertical shaft 4 b; each locking disc 4a is arranged corresponding to one connecting column 2e, each connecting column 2e is provided with a tooth groove 2e1 arranged along the axial direction of the locking disc 4a, the outer edge 2b1 of each locking disc 4a can be clamped in the tooth groove 2e1, the outer edge 2b1 of each locking disc 4a is provided with an unlocking notch 4a1, and the locking mechanism 4 further comprises a driving device for driving the four locking discs 4a to synchronously rotate; the driving device is used for driving the four locking discs 4a to rotate, so that the outer edges 2b1 of the locking discs 4a are clamped in the tooth grooves 2e1 of the connecting columns 2e respectively, and the cutting mechanism 2 is locked and cannot lift in the state; the driving device is also used for driving the four locking discs 4a to rotate, so that the unlocking notches 4a1 of the locking discs 4a are intersected with the projection of the connecting column 2e in the vertical direction, namely the locking discs 4a are separated from the connecting column 2e, and the cutting mechanism 2 can freely lift and descend in the state.

Specifically, drive arrangement includes four synchronizing wheels 6a, a hold-in range 6b and a driving motor 6c, four synchronizing wheel 6a is integrated into one piece respectively on a locking dish 4a, and hold-in range 6b is connected on four synchronizing wheels 6a, and driving motor 6c fixes on main frame 1a and is connected with arbitrary locking dish 4a transmission, and driving motor 6c drives certain synchronizing wheel 6a and rotates, and synchronizing wheel 6a rotates and drives the motion of hold-in range 6b, and hold-in range 6b drives another three synchronizing wheel 6a and rotates, and then makes four locking dishes 4a rotate together.

Specifically, four traction wheels 6d are arranged outside the four synchronous wheels 6a, the traction wheels 6d are rotatably arranged on the main frame 1a, the synchronous belts 6b are sleeved on the four traction wheels 6d, and the traction wheels 6d are used for expanding a belt and avoiding the engine 2c of the cutting mechanism 2.

As shown in fig. 1, 2, 4 and 5, in the working state of the present invention, the driving motor 6c of the locking mechanism 4 is in the non-working state, and the locking disc 4a is ensured to be clamped in the tooth space 2e1 by the self-locking capability of the driving motor 6c, so as to position the cutting mechanism 2, and the positioning mechanism cannot freely lift.

The invention comprises the following specific operation steps during height adjustment:

(1) driving motor 6c starts, drive certain synchronizing wheel 6a and rotate, synchronizing wheel 6a rotates and drives the motion of hold-in range 6b, hold-in range 6b drives another three synchronizing wheel 6a and rotates, and then make four locking discs 4a together rotate, it is crossing with spliced pole 2e at the ascending projection of vertical side until locking disc 4 a's unblock breach 4a1, driving motor 6c closes, locking disc 4a removes the locking to spliced pole 2e, and then make cutting mechanism 2 can slide through spliced pole 2e and uide bushing 5's cooperation.

(2) Locking dish 4a removes the locking back to spliced pole 2e, pulls stock 3a top through the manual work, makes the top of stock 3a use quarter butt 3b for supporting the perk or push down, through lever principle, drives cutting mechanism 2 of stock 3a bottom for 1 vertical rising of frame or decline make the hand propelled car of mowing can adjust the height of mowing.

(3) After the adjustment is completed, the cutting mechanism is restarted to drive a certain synchronous wheel 6a to rotate, the synchronous wheel 6a rotates to drive a synchronous belt 6b to move, the synchronous belt 6b drives another three synchronous wheels 6a to rotate, and then the four locking discs 4a rotate together until the outer edges 2b1 of the locking discs 4a are clamped in the tooth grooves 2e1 of the connecting columns 2e, the driving motor 6c is turned off, and the cutting mechanism 2 is positioned.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a height adjustment mechanism of hand propelled lawn mower for gardens which characterized in that: the height adjusting mechanism (3) comprises a long rod (3 a) and a short rod (3 b), the bottom of the long rod (3 a) is hinged to the top of the cutting mechanism (2), the bottom of the short rod (3 b) is hinged to the rear of the lower section of the frame (1), the top of the short rod (3 b) is hinged to the middle section of the long rod (3 a), the long rod (3 a) and the short rod (3 b) are overlapped along the projection of the vertical direction, the top of the long rod (3 a) can drive the cutting mechanism (2) connected to the bottom of the long rod (3 a) to move up and down relative to the frame (1) by taking the short rod (3 b) as a support under the driving of external force, the locking mechanism (4) is fixed on the frame (1), and the locking mechanism (4) is matched with the cutting mechanism (2) to position the cutting mechanism (2); the locking mechanism (4) comprises four locking discs (4 a) in total arranged on the upper end surfaces of square tubes (1 a 1) on two sides above the main frame (1 a), a vertical shaft (4 b) for mounting the locking discs (4 a) is arranged on each square tube (1 a 1), and the locking discs (4 a) are rotatably arranged on the vertical shaft (4 b); each locking disc (4 a) is arranged corresponding to one connecting column (2 e), each connecting column (2 e) is provided with a tooth groove (2 e 1) which is arranged along the axial direction of the locking disc (4 a), the outer edge (2 b 1) of each locking disc (4 a) can be clamped in the tooth groove (2 e 1), the outer edge (2 b 1) of each locking disc (4 a) is provided with an unlocking notch (4 a 1) along the upper edge, each locking mechanism (4) further comprises a driving device which is used for driving the four locking discs (4 a) to synchronously rotate, and the driving device is used for driving the four locking discs (4 a) to rotate, so that the outer edge (2 b 1) of each locking disc (4 a) is clamped in the tooth groove (2 e 1) of each connecting column (2 e), or the unlocking notches (4 a 1) of each locking disc (4 a) are intersected with the projection of each connecting column (2 e) in the vertical direction.