CN117136704B - Backpack mower - Google Patents
Backpack mower Download PDFInfo
- Publication number
- CN117136704B CN117136704B CN202311161366.2A CN202311161366A CN117136704B CN 117136704 B CN117136704 B CN 117136704B CN 202311161366 A CN202311161366 A CN 202311161366A CN 117136704 B CN117136704 B CN 117136704B
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- Prior art keywords
- connecting arm
- transmission
- shaft
- power
- output shaft
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- 230000005540 biological transmission Effects 0.000 claims abstract description 97
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 238000003756 stirring Methods 0.000 description 14
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
- A01D34/67—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis hand-guided by a walking operator
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
- A01D34/67—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis hand-guided by a walking operator
- A01D34/68—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis hand-guided by a walking operator with motor driven cutters or wheels
- A01D34/69—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis hand-guided by a walking operator with motor driven cutters or wheels with motor driven wheels
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
- A01D34/76—Driving mechanisms for the cutters
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
- A01D34/82—Other details
- A01D34/824—Handle arrangements
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D69/00—Driving mechanisms or parts thereof for harvesters or mowers
- A01D69/06—Gearings
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D69/00—Driving mechanisms or parts thereof for harvesters or mowers
- A01D69/08—Clutches
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Harvester Elements (AREA)
Abstract
The invention discloses a backpack mower, which is provided with a double-form backpack frame, wherein three connecting arms are unfolded when pushing, and are connected with a first connecting arm through sliding pipe sleeves in a threaded manner to form a support so as to keep the unfolded form of the connecting arms; finally, in the pushing state, the electromagnetic clutch controls the power output to the traveling wheel set so as to achieve the effect of automatic traveling of the mower. The invention provides a pushing mode and a carrying mode for the mower to adapt to the advancing and transporting of flat and non-flat pavement, in addition, the length of the transmission device can be adjusted in the using process of different modes, thereby improving the using convenience.
Description
Technical Field
The present invention relates to mowers, and more particularly to a backpack mower.
Background
Modern landscaping vegetation not only comprises greening lawns, but also comprises dwarf Cong Mu and shrubs, and various vegetation are designed according to level collocation to present different shapes. In order to ensure the aesthetic property and the uniformity of urban landscaping, the urban landscaping needs to be trimmed regularly, and the trimming equipment is a mower, so that the electric mower for the landscaping, which circulates in the market, is mainly divided into a backpack type and a push type.
The backpack mower needs to be carried for a long time in the use process, so that the burden of a user can be increased when the backpack mower is used, and the backpack mower is not suitable for long-time use; when the pushing type road surface or the step is uneven in the using or transporting process, the pushing type road surface or the step needs to be manually carried, and the volume and the mass of the transmission part, the pushing frame and the main machine part are large, so that the manual carrying is extremely laborious.
Disclosure of Invention
Based on the fact that both the backpack type mower and the push type mower in the prior art are in a single-form mode, the backpack type mower cannot be interchanged between the two modes, and therefore cannot adapt to the defects of uneven pavement or grasslands in transportation and use.
The technical scheme adopted for solving the technical problems is as follows:
The utility model provides a backpack lawn mower, includes power device, frame and transmission, and power device is engine or motor, and power device sets up in the frame, and transmission's one end is connected with power device's output, and transmission's the other end is provided with rotary cutter, and the frame includes:
the power device is fixed on the top of the support base, and the output end of the power device extends to the concave cavity;
The double-form backpack frame comprises a left connecting arm, a right connecting arm and two sliding tube sleeves with internal threads, wherein the left connecting arm and the right connecting arm are identical in structure, the sliding tube sleeves are respectively sleeved on the left connecting arm and the right connecting arm in a sliding manner, each of the left connecting arm and the right connecting arm comprises a first connecting arm fixed on a supporting base, a second connecting arm connected on the first connecting arm in a rotating manner and a third connecting arm connected on the second connecting arm in a rotating manner, external threads are arranged on the first connecting arm, the sliding tube sleeves slide downwards and can be in threaded connection with the first connecting arm, and the length of the sliding tube sleeves is larger than the sum of the lengths of the first connecting arm and the second connecting arm;
the braces are provided with two straps which are respectively fixed on the two third connecting arms;
The walking structure comprises a walking wheel set arranged on the supporting base.
The mower in this solution has the following two states:
backpack state: the mower is placed on the side, the sliding tube sleeve is slid to the third connecting arm (the sliding tube sleeve is required to be staggered with the braces to avoid shielding the braces), the second connecting arm and the third connecting arm face the bottom of the mower and are fixed on the clamping piece, and finally the mower is backed up.
And in a pushing state, the first connecting arm, the second connecting arm and the third connecting arm are completely unfolded to the longest state, then the sliding pipe sleeve is slid downwards, the sliding pipe sleeve is connected with the first connecting arm in a threaded manner, and the sliding pipe sleeve can move forwards and backwards through a walking structure at the moment.
The transmission device comprises:
the outer sleeve is detachably fixed on the frame, can be used in a pushing state when being held by hand after being detached, can also be used when being carried on the back, is generally used for pushing when being fixed, is internally provided with a first axial hole extending axially, one end of the outer sleeve is provided with an annular chute extending axially, and the end part of the other end is provided with a transmission hose;
the inner sleeve is inserted into the annular chute, and the middle part of the inner sleeve is provided with a second axial hole extending axially;
The first transmission shaft is arranged in the first shaft hole and supported by a bearing, one end of the first transmission shaft is connected with the output end of the power device through a transmission hose, the other end of the first transmission shaft is provided with a connecting groove, and the groove wall of the connecting groove is provided with an internal spline;
The second transmission shaft is arranged in the second shaft hole and supported by the bearing, one end of the second transmission shaft is provided with an external spline, and the end of the second transmission shaft extends into the connecting groove and is in sliding connection with the first transmission shaft;
The machine head is fixed at the outer end part of the inner sleeve, a first bevel gear and a second bevel gear are meshed in the machine head, the first bevel gear is connected with the other end of the second transmission shaft, a threaded mounting shaft is arranged on the second bevel gear, and a rotary cutter is sleeved on the mounting shaft and locked through a bolt;
The adjusting frame comprises a pull rod frame with one end fixed on the outer wall of the inner sleeve and a limit seat with a screw hole arranged on the outer sleeve, wherein a bar-shaped hole extending along the axial direction of the inner sleeve is arranged on the pull rod frame, and a limit bolt penetrating through the bar-shaped hole and in threaded connection with the limit seat is arranged at the bar-shaped hole. In this scheme through pulling the alignment jig and locking, adjustable transmission's length generally needs to shorten transmission's length when pushing away, increases the stability in the use, and needs to adjust transmission's length according to user's height under handheld state.
Specifically, the concave cavity of the support base is provided with a power input base body, an output shaft of the power device extends into the power input base body, a transmission hose is fixed on the power input base body, and an internal transmission structure is in transmission connection with the power input shaft. The scheme outputs power of the power device to the transmission device through the transmission hose.
Specifically, the walking wheelset includes two front wheels that are connected through preceding pivot and two rear wheels that are connected through the rear axle, and front axle and rear axle transversely run through the support base and rotate with the support base and be connected.
Preferably, the concave cavity of the support base is provided with a power input base body, and the power input base body is internally provided with:
a power plant output shaft driven by the power plant;
the first power output shaft is mutually perpendicular to the power device output shaft and is in transmission connection with the power device output shaft through a group of meshed bevel gears, and the output end of the first power output shaft is in transmission connection with the transmission hose;
The second power output shaft is arranged in the same direction as the power device output shaft, and an electromagnetic clutch for controlling the separation and the combination of the second power output shaft and the power device output shaft is arranged between the second power output shaft and the power device output shaft, and extends out of the power seat;
the two pulleys are respectively a first pulley and a second pulley, the first pulley is arranged on the second power output shaft, the second pulley is arranged in the concave cavity through the mounting frame, and the second pulley is provided with a shaft lever with a main bevel gear;
the belt is sleeved on the first belt pulley and the second belt pulley;
The transmission box is arranged at the concave cavity, one wheel shaft of the walking wheel set penetrates through the transmission box, a spur gear is arranged on the wheel shaft, the spur gear and the main bevel gear are both positioned in the transmission box, a transmission gear with bevel teeth and straight teeth is further arranged in the transmission box, and the bevel teeth and the spur teeth of the transmission gear are meshed with the main bevel gear and the spur gear respectively. In this scheme, power device's power not only is used for driving rotary cutter's rotation, and it is through the controllable output of electromagnetic clutch to the walking wheel, realizes the automatic walking of walking wheel.
Specifically, the first linking arm is cylindrical member, and its top is equipped with flat connecting portion, and the second linking arm both ends all are equipped with the U-shaped opening, and U-shaped open-ended both sides are equipped with the articulated shaft hole, and the articulated shaft sets up in the articulated shaft hole, and flat connecting portion of first linking arm connects in the articulated shaft middle part of second linking arm bottom.
Specifically, the third linking arm is cylindrical member, and its bottom is equipped with flat connecting portion, and this flat connecting portion connects in articulated shaft middle part.
The clamping piece comprises a clamping table arranged on the supporting base and a clamping ring arranged at the end part of the clamping table, the clamping ring comprises an outer circular ring and an inner circular ring with elasticity, the outer circular ring is a 3/4 circular ring, a sliding groove is formed in the inner wall of the outer circular ring, the inner circular ring is a 2/3 circular ring and is positioned in the embedded sliding groove, a stirring hole is formed in the sliding groove, stirring stripes are formed in the outer wall surface of the inner circular ring, and the inner circular ring can rotate in the sliding groove to seal an opening of the outer circular ring.
Preferably, the thickness of the inner ring is the same as the depth of the chute, and the diameter of the first connecting arm is the same as the inner diameter of the outer ring. During installation, the opening of the outer ring is broken off, then the inner ring is clamped into the sliding groove, after the third connecting arm is clamped into the outer ring, the third connecting arm is inserted into the stirring hole through the external stirring pin and stirs the inner ring, so that the inner ring rotates to the opening of the outer ring to seal the opening, stirring stripes on the inner ring are used for increasing friction, and sliding is avoided when stirring.
Specifically, be equipped with the clearance between slip tube cover and the third linking arm, slip tube cover hole top is equipped with two relative arc bosss, and the braces is located the clearance department between two arc bosss when slip tube cover slides, and is further, can be in the play of the clearance position trompil of two arc bosss for the pulling out of braces, and the trompil can avoid slip tube cover overlength to cause the shielding to the braces. When the arc boss is in a pushing state, the third connecting arm is supported, and excessive shaking of the third connecting arm is avoided.
Compared with the prior art, the invention has the advantages that: the invention provides a pushing mode and a carrying mode for the mower to adapt to the advancing and transporting of flat and non-flat pavement, in addition, the length of the transmission device can be adjusted in the use process of different modes, thereby improving the use convenience; in the pushing mode, the electromagnetic clutch can control the power output to the traveling wheel set so as to realize the automatic traveling of the mower.
Drawings
The invention will be described in further detail below in connection with the drawings and the preferred embodiments, but it will be appreciated by those skilled in the art that these drawings are drawn for the purpose of illustrating the preferred embodiments only and thus should not be taken as limiting the scope of the invention. Moreover, unless specifically indicated otherwise, the drawings are merely schematic representations, not necessarily to scale, of the compositions or constructions of the described objects and may include exaggerated representations.
FIG. 1 is a schematic view of a mower in a pushing state;
FIG. 2 is a schematic view of a mower of the present invention in a carrying state;
FIG. 3 is an exploded view of a dual-form back rest;
FIG. 4 is a schematic view of a structure of a dual-form backpack frame in a folded configuration;
FIG. 5 is a schematic diagram of the transmission mechanism;
FIG. 6 is a schematic structural view (internal) of the transmission;
FIG. 7 is a cross-sectional view of the inner sleeve and outer sleeve;
FIG. 8 is a schematic view of a mower bottom construction;
FIG. 9 is a schematic diagram of the internal transmission structure of the power input housing at the output end of the power device;
FIG. 10 is a schematic view of the internal drive portion of the transmission case;
FIG. 11 is a perspective view of the clip;
In the figure: 10. a power device; 101. an output shaft of the power device; 102. a first power take-off shaft; 103. a second power take-off shaft; 104. an electromagnetic clutch; 105. a first pulley; 106. a second pulley; 107. a belt; 108. a transmission gear; 109. a main bevel gear; 110. spur gears; 20. a frame; 201. a dual-form backpack frame; 2011. a first connecting arm; 2012. a second connecting arm; 2013. a third connecting arm; 2014. a sliding pipe sleeve; 2015. a clamping member; 20151. a clamping table; 20152. an outer ring; 20121, chute; 201122, a toggle hole; 20153. an inner ring; 202. a support base; 2021. a cavity; 2022. mounting a frame plate; 2023. a transmission case; 2024. a connecting seat; 2025. a handle; 30. a transmission device; 301. a transmission hose; 302. an outer sleeve; 3021. a first shaft hole; 3022. a circular chute; 303. an inner sleeve; 3031. a second shaft hole; 304. a machine head; 305. a pull rod holder; 3051. a bar-shaped hole; 306. a limit seat; 307. a limit bolt; 308. a first drive shaft; 309. a second drive shaft; 310. a first bevel gear; 311. a second bevel gear; 312. rotating the cutter; 40. a walking structure; 401. a wheel axle; 50. a brace.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the drawings, and those skilled in the art will appreciate that the descriptions are merely illustrative, exemplary, and should not be construed as limiting the scope of the present invention.
It should be noted that: like reference numerals denote like items in the following figures, and thus once an item is defined in one figure, it may not be further defined and explained in the following figures.
Examples
The title of the backpack mower is mainly described in the embodiment, and the title is specifically as follows:
1-11, including power device 10, frame 20 and transmission 30, power device 10 is engine or motor, and power device 10 sets up on frame 20, and the one end of transmission 30 is connected with the output of power device 10, and the other end of transmission 30 is provided with rotary cutter 312, and frame 20 includes:
The power device comprises a support base 202, wherein a concave cavity 2021 is formed in the bottom of the support base, a mounting frame plate 2022 is arranged at the concave cavity 2021, a plurality of opposite clamping pieces 2015 are arranged on the mounting frame plate 2022, two or four clamping pieces 2015 are arranged in general, the power device 10 is fixed on the top of the power device, and the output end of the power device 10 extends to the concave cavity 2021;
The dual-form backpack frame 201 comprises a left connecting arm, a right connecting arm and two slide tube sleeves 2014 with internal threads, wherein the left connecting arm and the right connecting arm have the same structure, the two slide tube sleeves are respectively sleeved on the left connecting arm and the right connecting arm in a sliding way, the left connecting arm and the right connecting arm respectively comprise a first connecting arm 2011 fixed on a supporting base 202, a second connecting arm 2012 rotationally connected on the first connecting arm 2011 and a third connecting arm 2013 rotationally connected on the second connecting arm 2012, external threads are arranged on the first connecting arm 2011, the slide tube sleeves 2014 slide downwards and can be in threaded connection with the first connecting arm 2011, and the length of the slide tube sleeves 2014 is larger than the sum of the lengths of the first connecting arm 2011 and the second connecting arm 2012;
two braces 50 respectively fixed to the two third connecting arms 2013;
the walking structure 40 includes a walking wheel set disposed on a support base 202.
The mower in this solution has the following two states:
backpack state: the mower is put on the side, the slide sleeve 2014 is slid to the third connecting arm 2013 (the slide sleeve 2014 is required to be staggered with the braces 50 to avoid shielding the braces 50), the second connecting arm 2012 and the third connecting arm 2013 face the bottom of the mower and the third connecting arm 2013 are fixed on the clamping piece 2015, and finally the mower is backed up, and the mower can be transported in the situations of being on a lawn level, going up and down steps and the like.
Pushing state, in which the first connecting arm 2011, the second connecting arm 2012 and the third connecting arm 2013 are completely unfolded to the longest state, then the sliding sleeve 2014 is slid downwards, and the sliding sleeve 2014 is in threaded connection with the first connecting arm 2011, at this time, the sliding structure 40 can be used for traveling and backing, and the mode is suitable for being used and pushed on a flat ground.
The transmission device comprises:
The outer sleeve 302 is detachably fixed on the support base 202 through the connecting seat 2024, the outer sleeve 302 can be held by hand for use after being detached, the outer sleeve is provided with the holding handle 2025, the outer sleeve can be used in a pushing state when being held by hand or can be used when being carried on the back, the outer sleeve is generally used for pushing during fixing, the inner part of the outer sleeve is provided with a first axial hole 3021 extending axially, one end of the outer sleeve is provided with an annular sliding groove 3022 extending axially, and the other end of the outer sleeve is provided with a transmission hose 301;
The inner sleeve 303 is inserted into the annular chute 3022, and the middle part of the inner sleeve is provided with a second axial hole 3022 extending axially;
The first transmission shaft 308 is arranged in the first shaft hole 3021 and supported by a bearing, one end of the first transmission shaft is connected with the output end of the power device 10 through the transmission hose 301, the other end of the first transmission shaft is provided with a connecting groove, and the groove wall of the connecting groove is provided with an internal spline;
The second transmission shaft 309 is disposed in the second shaft hole 3031 and supported by a bearing, one end of which is provided with an external spline and extends into the connecting slot to be slidingly connected with the first transmission shaft 308;
the machine head 304 is fixed at the outer end part of the inner sleeve 303, a first bevel gear 310 and a second bevel gear 311 which are meshed are arranged in the machine head, the first bevel gear 310 is connected with the other end of the second transmission shaft 309, a threaded mounting shaft is arranged on the second bevel gear 311, and a rotary cutter 312 is sleeved on the mounting shaft and locked by a bolt;
The adjusting frame comprises a pull rod frame 305 with one end fixed on the outer wall of the inner sleeve 303 and a limiting seat 306 with a screw hole arranged on the outer sleeve 302, a strip-shaped hole 3051 extending along the axial direction of the inner sleeve 303 is arranged on the pull rod frame 305, and a limiting bolt 307 penetrating through the strip-shaped hole 3051 and in threaded connection with the limiting seat 306 is arranged at the strip-shaped hole 3051. In this scheme, the length of the transmission device 30 can be adjusted by pulling and locking the adjusting frame, so that the length of the transmission device 30 is generally required to be shortened when pushing, the stability in the use process is increased, and the length of the transmission device 30 is required to be adjusted according to the height of a user in a handheld state.
Power take off scheme one:
A power input seat body is arranged at the concave cavity 2021 of the support base 202, the power device output shaft 101 extends into the power input seat body, the transmission hose 301 is fixed on the power input seat body, and an internal transmission structure is in transmission connection with the power input shaft. The scheme outputs the power of the power device 10 to the transmission device 30 through the transmission hose 301; the scheme does not provide power for the walking wheel set.
And a power output scheme II:
The walking wheel set comprises two front wheels connected through a front rotating shaft and two rear wheels connected through a rear wheel shaft, and the front wheel shaft and the rear wheel shaft transversely penetrate through the support base 202 and are rotatably connected with the support base 202.
A power input seat body is arranged at the concave cavity 2021 of the support base 202, and a power input seat body is internally provided with:
a power plant output shaft 101 driven by the power plant 10;
a first power output shaft 102 which is mutually perpendicular to the power unit output shaft 101 and is in transmission connection with the power unit output shaft 101 through a group of meshed bevel gears, and the output end of the first power output shaft 102 is in transmission connection with a transmission hose 301;
a second power output shaft 103, which is arranged in the same direction as the power unit output shaft 101 and is provided with an electromagnetic clutch 104 between the two to control the separation and the combination of the two, and the outer end of the second power output shaft extends out of the power seat body;
The two pulleys are respectively a first pulley 105 and a second pulley 106, the first pulley 105 is arranged on the second power output shaft 103, the second pulley 106 is arranged in the concave cavity 2021 through a mounting frame, and the second pulley 106 is provided with a shaft rod with a main bevel gear 109;
a belt 107, wherein the belt 107 is sleeved on the first belt pulley 105 and the second belt pulley 106;
The transmission case 2023 is arranged at the concave cavity 2021, one wheel axle 401 of the walking wheel set passes through the transmission case 2023, the wheel axle 401 is provided with a spur gear 110, the spur gear 110 and the main bevel gear 109 are both positioned in the transmission case 2023, a transmission gear 108 with bevel teeth and spur teeth is also arranged in the transmission case 2023, and the bevel teeth and the spur teeth of the transmission gear 108 are respectively meshed with the main bevel gear 109 and the spur gear 110. In this scheme, the power of the power device 10 is not only used for driving the rotation of the rotary cutter 312, but also is controllably output to the travelling wheels through the electromagnetic clutch 104, so as to realize the automatic travelling of the travelling wheels.
Specifically, the first connecting arm 2011 is a cylindrical rod, a flat connecting portion is arranged at the top of the first connecting arm 2011, U-shaped openings are formed in two ends of the second connecting arm 2012, hinge shaft holes are formed in two sides of each U-shaped opening, a hinge shaft is arranged in each hinge shaft hole, and the flat connecting portion of the first connecting arm 2011 is connected to the middle of the hinge shaft at the bottom of the second connecting arm 2012.
Specifically, the third connecting arm 2013 is a cylindrical rod, and a flat connecting portion is disposed at the bottom of the third connecting arm and connected to the middle of the hinge shaft.
The clamping member 2015 comprises a clamping table 20151 arranged on the supporting base 202 and a clamping ring arranged at the end part of the clamping table 20151, the clamping ring comprises an outer ring 20152 and an inner ring 20153 with elasticity, the outer ring 20152 is a 3/4 ring and is provided with a chute 20121 along the inner wall of the outer ring 20152, the inner ring 20153 is a 2/3 ring and is positioned in the chute 20121, the chute 20121 is provided with a stirring hole 201512, the outer wall surface of the inner ring 20153 is provided with stirring stripes, and the inner ring 20153 can rotate in the chute 20121 to seal the opening of the outer ring 20152.
Preferably, the thickness of the inner ring 20153 is the same as the depth of the chute 20121, and the diameter of the first connecting arm 2011 is the same as the inner diameter of the outer ring 20152. During installation, the opening of the outer ring 20152 is broken off, then the inner ring 20153 is clamped into the chute 20121, after the third connecting arm 2013 is clamped into the outer ring 20152, the third connecting arm is inserted into the stirring hole 201122 through an external stirring pin and stirs the inner ring 20153 to enable the inner ring 20153 to rotate to the opening of the outer ring 20152 to seal the opening, and stirring stripes on the inner ring 20153 are used for increasing friction to avoid sliding during stirring.
Specifically, a gap is formed between the sliding tube sleeve 2014 and the third connecting arm 2013, two opposite arc-shaped bosses are arranged at the top of an inner hole of the sliding tube sleeve 2014, the brace 50 is located at the gap between the two arc-shaped bosses when the sliding tube sleeve 2014 slides, further, holes can be formed in the gap between the two arc-shaped bosses for pulling out the brace 50, and the blocking of the brace 50 caused by overlong sliding tube sleeve 2014 can be avoided. When the arc-shaped boss is in a pushing state, the third connecting arm 2013 is supported, and excessive shaking of the third connecting arm 2013 is avoided.
It should be noted that, the power device 10 is internally provided with a controller, the controller is in wired control or wireless control, the end parts of the two first connecting arms are also provided with a U-shaped frame, when the controller is in wired control, the control gates are all arranged on the U-shaped frame, and the control gates are connected with the controller through control lines; when the controller is in wireless control, the controller is directly controlled by an external remote control. In addition, the power device 10 can be changed from an engine to a motor, and other parts are made of light materials, so that the weight of the whole machine is reduced.
While the foregoing has been provided to illustrate the principles and embodiments of the present invention, and while specific embodiments have been described herein, it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the principles and embodiments of the invention, the invention is defined in the appended claims.
Claims (9)
1. The utility model provides a backpack lawn mower, includes power device, frame and transmission, and power device sets up in the frame, and transmission's one end is connected with power device's output, and transmission's the other end is provided with rotary cutter, its characterized in that, the frame includes:
the power device is fixed on the top of the support base, and the output end of the power device extends to the concave cavity;
The double-form backpack frame comprises a left connecting arm, a right connecting arm and two sliding tube sleeves with internal threads, wherein the left connecting arm and the right connecting arm are identical in structure, the sliding tube sleeves are respectively sleeved on the left connecting arm and the right connecting arm in a sliding manner, each of the left connecting arm and the right connecting arm comprises a first connecting arm fixed on a supporting base, a second connecting arm connected on the first connecting arm in a rotating manner and a third connecting arm connected on the second connecting arm in a rotating manner, external threads are arranged on the first connecting arm, the sliding tube sleeves slide downwards and can be in threaded connection with the first connecting arm, and the length of the sliding tube sleeves is larger than the sum of the lengths of the first connecting arm and the second connecting arm;
the braces are provided with two straps which are respectively fixed on the two third connecting arms;
the walking structure comprises a walking wheel set arranged on the supporting base; the transmission device comprises:
The outer sleeve is detachably fixed on the frame, a first axial hole extending axially is formed in the outer sleeve, an annular chute extending axially is formed in one end of the outer sleeve, a transmission hose is arranged at the end of the other end of the outer sleeve, and an annular chute extending axially is formed in the other end of the outer sleeve;
the inner sleeve is inserted into the annular chute, and the middle part of the inner sleeve is provided with a second axial hole extending axially;
The first transmission shaft is arranged in the first shaft hole and supported by a bearing, one end of the first transmission shaft is connected with the output end of the power device through a transmission hose, the other end of the first transmission shaft is provided with a connecting groove, and the groove wall of the connecting groove is provided with an internal spline;
The second transmission shaft is arranged in the second shaft hole and supported by the bearing, one end of the second transmission shaft is provided with an external spline, and the end of the second transmission shaft extends into the connecting groove and is in sliding connection with the first transmission shaft;
The machine head is fixed at the outer end part of the inner sleeve, a first bevel gear and a second bevel gear are meshed in the machine head, the first bevel gear is connected with the other end of the second transmission shaft, a threaded mounting shaft is arranged on the second bevel gear, and a rotary cutter is sleeved on the mounting shaft and locked through a bolt;
The adjusting frame comprises a pull rod frame with one end fixed on the outer wall of the inner sleeve and a limit seat with a screw hole arranged on the outer sleeve, wherein a bar-shaped hole extending along the axial direction of the inner sleeve is arranged on the pull rod frame, and a limit bolt penetrating through the bar-shaped hole and in threaded connection with the limit seat is arranged at the bar-shaped hole.
2. The backpack mower of claim 1, wherein the power input seat is provided at a concave cavity of the support base, the power device output shaft extends into the power input seat, the transmission hose is fixed on the power input seat, and the internal transmission structure extends into the power input seat to be in transmission connection with the power input shaft.
3. The backpack mower of claim 1 wherein the running gear set comprises two front wheels connected by a front axle and two rear wheels connected by a rear axle, the front and rear axles extending transversely through and rotatably connected to the support base.
4. A backpack mower according to claim 3, wherein the concave cavity of the supporting base is provided with a power input seat body, and the power input seat body is internally provided with:
a power plant output shaft driven by the power plant;
the first power output shaft is mutually perpendicular to the power device output shaft and is in transmission connection with the power device output shaft through a group of meshed bevel gears, and the output end of the first power output shaft is in transmission connection with the transmission hose;
The second power output shaft is arranged in the same direction as the power device output shaft, and an electromagnetic clutch for controlling the separation and the combination of the second power output shaft and the power device output shaft is arranged between the second power output shaft and the power device output shaft, and extends out of the power seat;
the two pulleys are respectively a first pulley and a second pulley, the first pulley is arranged on the second power output shaft, the second pulley is arranged in the concave cavity through the mounting frame, and the second pulley is provided with a shaft lever with a main bevel gear;
the belt is sleeved on the first belt pulley and the second belt pulley;
The transmission box is arranged at the concave cavity, one wheel shaft of the walking wheel set penetrates through the transmission box, a spur gear is arranged on the wheel shaft, the spur gear and the main bevel gear are both positioned in the transmission box, a transmission gear with bevel teeth and straight teeth is further arranged in the transmission box, and the bevel teeth and the spur teeth of the transmission gear are meshed with the main bevel gear and the spur gear respectively.
5. The backpack mower of claim 1, wherein the first connecting arm is a cylindrical rod, a flat connecting part is arranged at the top of the first connecting arm, U-shaped openings are arranged at two ends of the second connecting arm, hinge shaft holes are formed in two sides of the U-shaped openings, the hinge shaft is arranged in the hinge shaft holes, and the flat connecting part of the first connecting arm is connected to the middle part of the hinge shaft at the bottom of the second connecting arm.
6. The backpack mower of claim 5 wherein the third connecting arm is a cylindrical bar member having a flat connecting portion at the bottom thereof, the flat connecting portion being connected to the middle portion of the hinge shaft.
7. The backpack mower of claim 1, wherein the clamping member comprises a clamping table arranged on the supporting base and a clamping ring arranged at the end part of the clamping table, the clamping ring comprises an outer ring and an inner ring with elasticity, the outer ring is a 3/4 ring and is provided with a sliding groove along the inner wall of the clamping ring, the inner ring is a 2/3 ring and is positioned in the sliding groove in an embedded manner, a poking hole is arranged at the sliding groove, poking stripes are arranged on the outer wall surface of the inner ring, and the inner ring can rotate in the sliding groove to seal the opening of the outer ring.
8. The backpack mower of claim 7 wherein the inner circular ring has the same thickness as the depth of the chute and the first connecting arm has the same diameter as the inner diameter of the outer circular ring.
9. The backpack mower of claim 1, wherein a gap is provided between the slide tube sleeve and the third connecting arm, two opposite arc-shaped bosses are provided at the top of the inner hole of the slide tube sleeve, and the back strap is positioned at the gap between the two arc-shaped bosses when the slide tube sleeve slides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311161366.2A CN117136704B (en) | 2023-09-08 | 2023-09-08 | Backpack mower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311161366.2A CN117136704B (en) | 2023-09-08 | 2023-09-08 | Backpack mower |
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| Publication Number | Publication Date |
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| CN117136704A CN117136704A (en) | 2023-12-01 |
| CN117136704B true CN117136704B (en) | 2024-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311161366.2A Active CN117136704B (en) | 2023-09-08 | 2023-09-08 | Backpack mower |
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| Country | Link |
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| CN (1) | CN117136704B (en) |
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| CN117136704A (en) | 2023-12-01 |
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Denomination of invention: Backpack lawn mower Granted publication date: 20240423 Pledgee: Baota Sub Branch of Zhejiang Wuyi Rural Commercial Bank Co.,Ltd. Pledgor: WUYI HAOYUAN HARDWARE PRODUCTS Co.,Ltd. Registration number: Y2024980036341 |