CN216492035U - Lifting device and mower - Google Patents
Lifting device and mower Download PDFInfo
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- CN216492035U CN216492035U CN202122995242.7U CN202122995242U CN216492035U CN 216492035 U CN216492035 U CN 216492035U CN 202122995242 U CN202122995242 U CN 202122995242U CN 216492035 U CN216492035 U CN 216492035U
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- 230000007246 mechanism Effects 0.000 claims abstract description 164
- 230000008878 coupling Effects 0.000 claims abstract description 64
- 238000010168 coupling process Methods 0.000 claims abstract description 64
- 238000005859 coupling reaction Methods 0.000 claims abstract description 64
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 230000003139 buffering effect Effects 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 2
- 244000025254 Cannabis sativa Species 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 11
- 230000033001 locomotion Effects 0.000 abstract description 8
- 230000008859 change Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 230000003028 elevating effect Effects 0.000 description 4
- 238000009966 trimming Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003351 stiffener Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000013138 pruning Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
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Abstract
The application provides a lifting device and a mower, wherein the lifting device comprises a driving mechanism, a lifting mechanism and a cutting unit, the lifting mechanism is in transmission connection with the driving mechanism, the cutting unit is connected with the lifting mechanism, the driving mechanism drives the cutting unit to move to a preset height through the lifting mechanism, so that the cutting unit can trim grass conveniently, the lifting mechanism is provided with a coupling mechanism, the coupling mechanism is provided with a rotation angle range which can freely rotate around the axis of the driving shaft, the driving shaft is used for rotating to exceed the rotation angle range, the connecting mechanism is driven to swing through the coupling mechanism, so that the connecting mechanism drives the cutting unit to realize lifting, the distances between the cutting unit and the ground in different terrains are always equal, meanwhile, the coupling mechanism can prevent the cutting unit from driving the driving shaft to rotate in the up-and-down movement process, so that the driving mechanism is protected.
Description
Technical Field
The application belongs to the technical field of outdoor operation equipment, and particularly relates to a lifting device and a mower.
Background
In golf courses, turf for football fields, green fields for farms, and green fields for courtyards, etc., a mower is regularly used for trimming. The mower is provided with a cutting unit, and the cutting unit is used for cutting grass blades with a certain height.
The lawn mower is mainly used for mowing and sweeping a lawn, and comprises a cutting unit, a motor, a transmission unit, a control unit and a control unit, wherein the cutting unit is arranged on the transmission unit, the cutting unit is arranged on the cutting unit, the cutting unit is arranged on the transmission unit, the cutting unit is arranged on the cutting unit, and the cutting unit is arranged on the transmission unit.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of this application is to provide a elevating gear and lawn mower, can change and adjust cutting unit apart from ground height according to the landform for lawn mower can prune out the meadow of co-altitude to different landforms.
To achieve the above object, a first aspect of the present application provides a lifting device, including:
a drive mechanism having a drive shaft;
the lifting mechanism comprises a coupling mechanism and a connecting mechanism, the coupling mechanism is connected with the driving shaft, the connecting mechanism is connected with the coupling mechanism, and the connecting mechanism is used for connecting a cutting unit of the mower;
the coupling mechanism is provided with a rotation angle range which freely rotates around the axis of the driving shaft, and the driving shaft is used for driving the connecting mechanism to swing through the coupling mechanism when rotating to exceed the rotation angle range, so that the connecting mechanism drives the cutting unit to realize lifting.
In one embodiment, the connecting mechanism is arranged along the radial direction of the driving shaft and is provided with a first connecting end and a second connecting end which are opposite;
the coupling mechanism is connected between the driving shaft and the first connecting end in a transmission mode, and the second connecting end is used for being in rotary connection with the cutting unit.
In one embodiment, the coupling mechanism comprises:
the first fixing piece is fixedly connected to the driving shaft;
and the second fixing piece is connected with the first fixing piece, and a rotating clearance is formed between the second fixing piece and the first fixing piece, so that the second fixing piece can rotate around the axis of the driving shaft in a preset rotating angle range relative to the first fixing piece.
In one embodiment, the first fixing member is provided with a clearance groove, and the clearance groove is provided with a first abutting end and a second abutting end which are opposite to each other along the rotation direction of the first fixing member;
the second fixing piece is provided with a limiting block, the limiting block is contained in the clearance groove, and the arc length between the first abutting end and the second abutting end is larger than that of the limiting block along the rotation direction of the first fixing piece.
In one embodiment, the second fixing member is provided with a clearance groove, and the clearance groove is provided with a first abutting end and a second abutting end which are opposite to each other along the rotation direction of the first fixing member;
the first fixing piece is provided with a limiting block, the limiting block is contained in the clearance groove, and the arc length between the first abutting end and the second abutting end is larger than that of the limiting block along the rotation direction of the first fixing piece.
In one embodiment, the first fixing member includes a cylinder structure and a disc structure connected to the cylinder structure;
the cylinder structure is provided with a fixing hole, the fixing hole penetrates through the cylinder structure along the axial direction of the cylinder structure, the fixing hole is coaxial with the driving shaft and is sleeved on the driving shaft, and the second fixing piece is sleeved on the cylinder structure;
the clearance groove is arranged on one side of the disc body structure facing the second fixing piece, and the limiting block is arranged on one side of the second fixing piece facing the first fixing piece.
In one embodiment, the connection mechanism comprises:
the main arm beam is connected to the second fixing part at one end and is rotatably connected to the cutting unit at the other end;
and one end of the main arm beam is rotatably connected to the driving mechanism, the other end of the main arm beam is rotatably connected to the cutting unit, and the length of the auxiliary arm beam is equal to that of the main arm beam and is spaced from and parallel to the main arm beam.
In one embodiment, the connecting mechanism further includes an elastic member, one end of which is connected to the main arm beam and the other end of which is connected to the sub-arm beam, for buffering the main arm beam when the cutting unit moves in the height direction.
In one embodiment, the attachment mechanism further comprises a stiffener;
the connecting mechanisms are symmetrical along a direction perpendicular to the rotating axis of the driving shaft, and the reinforcing piece is connected to the two main arm beams;
alternatively, the reinforcing member is connected to both of the sub-arm beams.
The embodiment of the application provides a lifting device has following beneficial effect at least:
the lifting device provided by the embodiment of the application is applied to a mower, and the coupling mechanism has a rotation angle range which can freely rotate around the axis of the driving shaft, so that when the driving shaft rotates to exceed the rotation angle range of the coupling mechanism, the coupling mechanism drives the connecting mechanism to swing, the connecting mechanism drives the cutting unit to lift, and the cutting unit moves to a preset height which is a certain height away from the ground, so that the cutting unit can conveniently perform the next operation; meanwhile, the coupling mechanism has a rotation angle range which freely rotates around the axis of the driving shaft, the mower drives the lifting device to move on the ground, the cutting unit can move up and down along the height direction according to the change of the terrain to adapt to different terrains, the distances between the cutting unit and the ground in different terrains are always equal, and the coupling mechanism can prevent the cutting unit from driving the driving shaft to rotate in the up-and-down movement process within the rotation angle range of the free rotation, so that the driving mechanism is protected.
In another aspect, the present application provides a lawn mower comprising:
a drive base;
the lifting device is connected to the driving base and driven by the driving base to move on the ground.
The lawn mower that this application embodiment provided has following beneficial effect at least:
according to the mower provided by the embodiment of the application, the driving mechanism in the lifting device is fixed on the driving base of the mower, the cutting unit is connected with the driving shaft of the driving mechanism through the coupling mechanism and the connecting mechanism in the lifting device, and in the process that the driving base drives the cutting unit to trim grasslands, the driving shaft adjusts the cutting unit to the preset working height through the coupling mechanism and the connecting mechanism in the lifting device, so that the cutting unit can trim the grasslands on the ground conveniently; meanwhile, the coupling mechanism has a rotation angle range which can freely rotate around the axis of the driving shaft, so that the coupling mechanism can allow the cutting unit to move up and down in the height direction according to the change of the terrain and the landform so as to adapt to different terrains, and ensure that the distances between the cutting unit and the ground in different terrains are always equal, so that the heights of the cutting unit and the ground are always consistent, and further ensure that the heights of grass blades on the grasslands trimmed by the cutting unit in different terrains and landforms are the same; in the process that the cutting unit moves up and down in the height direction, the coupling mechanism can prevent the cutting unit from driving the driving shaft to rotate in the process of moving up and down in the rotating angle range of free rotation, and therefore the driving mechanism is protected.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a first schematic structural diagram of a lawn mower according to an embodiment of the present disclosure;
fig. 2 is a schematic structural view of a mower according to an embodiment of the present application;
fig. 3 is a first schematic structural diagram of a lifting device according to an embodiment of the present disclosure;
fig. 4 is a second schematic structural diagram of the lifting device according to the embodiment of the present application;
fig. 5 is a schematic structural diagram three of the lifting device provided in the embodiment of the present application;
fig. 6 is an exploded schematic view of a lifting device according to an embodiment of the present disclosure;
FIG. 7 is a first schematic structural diagram of a position sensor according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of a position sensor according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of a first fixing element according to an embodiment of the present application;
fig. 10 is a first schematic structural diagram of a second fixing element according to an embodiment of the present application;
fig. 11 is a second schematic structural diagram of a second fixing element provided in the embodiment of the present application.
Wherein, in the figures, the respective reference numerals:
10. a drive mechanism; 11. A fixed mount; 12. A drive motor;
13. a speed reducer; 20. A lifting mechanism; 30. A coupling mechanism;
31. a first fixing member; 32. A second fixing member; 33. A slot;
34. a limiting block; 35. Fastening a bolt; 40. A connecting mechanism;
41. a main arm beam; 42. A secondary arm beam; 43. An elastic member;
44. a reinforcement; 50. A cutting unit; 60. A position sensor;
61. a Hall sensor; 62. A magnet member; 63. An absolute position encoder;
70. a drive base;
131. a drive shaft; 311. A barrel structure; 312. A disc body structure;
431. a spring; 3111. A fixing hole; 3121. A threaded through hole;
s1, a first connecting end; s2, a second connecting end; s3, a first abutting end;
s4, a second abutting end.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically defined otherwise.
In golf courses, turf for football fields, green fields for farms, and green fields for courtyards, etc., a mower is regularly used for trimming. The mower is provided with a cutting unit, and the cutting unit is used for cutting grass blades with a certain height.
The lawn mower is designed in a structure that a cutting unit in the lawn mower cannot adjust the height distance between the cutting unit and the ground according to real-time change of landform and landform, so that the height of the lawn mower after being trimmed cannot be aligned with the height of the lawn mower after being trimmed on flat ground when the lawn mower travels in a hilly and/or pot-land area.
Therefore, an object of the embodiment of the application is to provide a lifting device and a mower, so as to solve the technical problem that the height distance between the mower and the ground cannot be adjusted according to the real-time change of the terrain and the features in the prior art.
Referring to fig. 3 to 5, a lifting device according to an embodiment of the present application will be described.
The embodiment of the application provides a lifting device, which comprises a driving mechanism 10, a lifting mechanism 20 and a cutting unit 50. The drive mechanism 10 has a drive shaft 131; the lifting mechanism 20 comprises a coupling mechanism 30 and a connecting mechanism 40, the coupling mechanism 30 is connected with the driving shaft 131, the connecting mechanism 40 is connected with the coupling mechanism 30, and the connecting mechanism 40 is used for connecting with the cutting unit 50 of the mower. The coupling mechanism 30 has a rotation angle range which is freely rotated around the axis of the driving shaft 131, and the driving shaft 131 is used for driving the connecting mechanism 40 to swing through the coupling mechanism 30 when rotating to exceed the rotation angle range, so that the connecting mechanism 40 drives the cutting unit 50 to realize lifting.
As the coupling mechanism 30 has a rotation angle range that freely rotates around the axis of the driving shaft 131, when the driving shaft 131 rotates to a position beyond the rotation angle range of the coupling mechanism 30, the coupling mechanism 30 drives the connecting mechanism 40 to swing, so that the connecting mechanism 40 drives the cutting unit 50 to lift, and the cutting unit 50 moves to a preset height with a certain height from the ground, so that the cutting unit 50 can trim grass blades on the grassland in the next step; meanwhile, since the coupling mechanism 30 has a rotation angle range that freely rotates around the axis of the driving shaft 131, when the mower drives the lifting device to move on the ground, the cutting unit 50 can move up and down along the height direction according to the change of the terrain to adapt to different terrains, and it is ensured that the distances between the cutting unit 50 and the ground in different terrains are always equal, and the coupling mechanism 30 can prevent the cutting unit 50 from driving the driving shaft 131 to rotate in the up and down movement process within the rotation angle range that freely rotates, thereby protecting the driving mechanism 10.
Specifically, in the embodiment of the present application, referring to fig. 3 to 7, the driving mechanism 10 includes a fixing frame 11, a driving motor 12, and a speed reducer 13, the speed reducer 13 is connected to a motor shaft of the driving motor 12 in a transmission manner, and the driving shaft 131 is disposed inside the speed reducer 13. The driving shaft 131 is driven by the motor shaft of the driving motor 12 and rotates in a first direction, wherein the first direction is clockwise in fig. 3 to 7, and the second direction is counterclockwise in fig. 3 to 7. The driving shaft 131 rotates along the first direction to drive the coupling mechanism 30 and the connecting mechanism 40 to rotate along the first direction, and the coupling mechanism 30 and the connecting mechanism 40 use the rotation center of the driving shaft 131 as the rotation axis to drive the cutting unit 50 to rotate along the first direction to a preset height above the ground, so that the cutting unit 50 can trim the grass blades.
In one embodiment of the present application, the coupling mechanism 40 is arranged in a radial direction of the driving shaft 131 and has opposite first and second coupling ends S1 and S2. The coupling mechanism 30 is drivingly connected between the driving shaft 131 and the first connecting end S1, and the second connecting end S2 is rotatably connected to the cutting unit 50.
Specifically, in the embodiment of the present application, referring to fig. 4 to 6, the coupling mechanism 30 is drivingly connected between the driving shaft 131 and the first connecting end S1, the cutting unit 50 is rotatably connected to the second connecting end S2, and the rotation axis of the rotation connection portion of the cutting unit 50 and the second connecting end S2 is parallel to the rotation of the driving shaft 131, so that the cutting unit 50 is kept perpendicular to the ground under the action of its own gravity. When the driving shaft 131 outputs the driving force, since the coupling mechanism 30 has a rotation angle range that freely rotates around the axis of the driving shaft 131, when the driving shaft 131 rotates to exceed the rotation angle range of the coupling mechanism, the driving shaft 131 drives the coupling mechanism 30 to rotate along the first direction, and the coupling mechanism drives the connecting mechanism 40 to swing, so that the connecting mechanism 40 drives the cutting unit 50 to move to a preset height, so that the cutting unit 50 can trim grass blades on the ground.
In the process of trimming grass blades on the ground by the cutting unit 50, due to a change in terrain, for example, a ground with a hillock or a hollow, in order to adapt to the change in terrain, the cutting unit 50 may be raised or lowered in the height direction, in the process of raising or lowering the cutting unit 50 in the height direction by the cutting unit 50, the cutting unit 50 drives the connecting mechanism 40 to rotate around the axis of the driving shaft 131 to respectively raise or lower in the second direction or the first direction, and the connecting mechanism 40 drives the coupling mechanism 30 to rotate within the rotation angle range thereof relative to the driving shaft 131, so that the coupling mechanism 30 blocks the transmission of the raising or lowering motion of the cutting unit 50 to the driving shaft 131 through the connecting mechanism 40.
In one embodiment of the present application, the coupling mechanism 30 includes a first fixing member 31 and a second fixing member 32, the first fixing member 31 being fixedly connected to the driving shaft 131; the second fixing member 32 is connected to the first fixing member 31 with a rotational play formed between the second fixing member 32 and the first fixing member 31 so that the second fixing member 32 can rotate relative to the first fixing member 31 within a predetermined rotational angle range about the axis of the driving shaft 131.
Specifically, referring to fig. 6, in the process that the cutting unit 50 moves up and down along the height direction to adapt to the terrain change, the cutting unit 50 drives the connecting mechanism 40 to swing around the axis of the driving shaft 131 along the first direction and the second direction, respectively, and when the connecting mechanism 40 swings around the axis of the driving shaft 131, because a rotational play is formed between the first fixing member 31 and the second fixing member 32, the connecting mechanism 40 drives the second fixing member 32 to rotate around the axis of the driving shaft 131 relative to the first fixing member 31 within a range of a preset angle, so that the movement of the cutting unit 50 along the height direction is blocked from being transmitted to the second fixing member 32 through the connecting mechanism 40, and then transmitted to the first fixing member 31 and the driving shaft 131 through the second fixing member 32.
In one embodiment of the present application, the first mount 31 is provided with a play slot 33, and the play slot 33 has a first abutting end S3 and a second abutting end S4 opposite to each other in the rotating direction of the first mount 31; the second fastener 32 has a stopper 34, the stopper 34 is received in the slot 33, and the arc length between the first abutting end S3 and the second abutting end S4 is greater than the arc length of the stopper 34 along the rotation direction of the first fastener 31.
Specifically, in the embodiment of the present application, referring to fig. 6 and 9 to 11, the first fixing member 31 includes a cylinder structure 311 and a disc structure 312 connected to the cylinder structure 311. The cylindrical structure 311 has a fixing hole 3111, and the fixing hole 3111 penetrates the cylindrical structure 311 in the axial direction of the cylindrical structure 311. The fixing hole 3111 is coaxial with the driving shaft 131 and is sleeved on the driving shaft 131. The disc structure 312 is fixed on the driving shaft 131 by the fastening bolt 35, a threaded through hole 3121 is provided on the disc structure 312, the threaded through hole 3121 penetrates through the disc structure 312 along the radial direction of the disc structure 312, and the fastening bolt 35 is screwed in the threaded through hole 3121 and abuts against the driving shaft 131 through the threaded through hole 3121, so as to fix the first fixing member 31 on the driving shaft 131. The second fixing member 32 is sleeved on the cylindrical structure 311, and the second fixing member 32 is rotatably connected with the cylindrical structure 311.
The clearance groove 33 is disposed on a side of the disc body structure 312 facing the second fixing member 32, and the limiting block 34 is disposed on a side of the second fixing member 32 facing the disc body structure 312, so that the limiting block 34 is accommodated in the clearance groove 33. In the rotation direction of the first fixing member 31, the arc length between the first abutting end S3 and the second abutting end S4 of the clearance groove 33 is greater than the arc length of the stopper 34, and when the stopper 34 is accommodated in the clearance groove 33, the stopper 34 and the first abutting end S3 and the second abutting end S4 of the clearance groove 33 are both spaced apart from each other, so that a rotational play is provided between the second fixing member 32 and the first fixing member 31, and the second fixing member 32 can rotate relative to the first fixing member 31 within a predetermined rotational angle range around the axis of the driving shaft 131.
After the rotation angle of the driving shaft 131 is greater than the preset rotation angle range of the coupling mechanism 30, the first abutting end S3 or the second abutting end S4 of the clearance groove 33 abuts against the limiting block 34, so that the first fixing member 31 can drive the second fixing member 32 to rotate, the second fixing member 32 drives the connecting mechanism 40 to swing along the first direction or the second direction, and the connecting mechanism 40 drives the cutting unit 50 to move to the preset height.
When the cutting unit 50 is lifted or lowered in the height direction due to the deformation of the ground, the cutting unit 50 drives the connecting mechanism 40 to swing in the second direction or the first direction around the axis of the driving shaft 131, the connecting mechanism 40 drives the second fixing member 32 to rotate in the second direction or the first direction around the axis of the driving shaft 131, and at this time, the limit block 34 on the second fixing member 32 moves between the first abutting end S3 and the second abutting end S4 of the clearance groove 33, so that the rotation of the second fixing member 32 is blocked and the rotation of the first fixing member 31 is driven.
In another embodiment of the present application, the clearance groove 33 is disposed on a side of the second fixing member 32 facing the first fixing member 31, and the stopper 34 is disposed on a side of the disc structure 312 facing the second fixing member 32.
In one embodiment of the present application, the connection mechanism 40 includes a main arm beam 41 and a sub arm beam 42. Wherein one end of the main arm beam 41 is connected to the second fixing member 32 and the other end is rotatably connected to the cutting unit 50. One end of the sub-arm beam 42 is rotatably connected to the driving mechanism 10, and the other end is rotatably connected to the cutting unit 50, and the length of the sub-arm beam 42 is equal to the length of the main arm beam 41, and is spaced apart from and parallel to the main arm beam 41.
Specifically, in the embodiment of the present application, referring to fig. 4 to 7, the number of the main arm beam 41 and the sub arm beam 42 is two, both ends of the driving shaft 131 are driving ends, and the two main arm beams 41 and the two sub arm beams 42 are symmetrical with respect to the driving motor 12. One end of the main arm beam 41 is connected to the second fixing element 32, the other end is rotatably connected to the cutting unit 50, the driving shaft 131 drives the first fixing element 31 to rotate, so that the first fixing element 31 drives the second fixing element 32 to rotate, and the second fixing element 32 drives the main arm beam 41 to rotate, so that the main arm beam 41 drives the cutting unit 50 to a preset height. The sub-arm beam 42 is disposed in parallel with the main arm beam 41 to improve stability of the link mechanism 40 when driving the cutting unit 50.
In one embodiment of the present application, the connection mechanism 40 further includes an elastic member 43, and the elastic member 43 has one end connected to the main arm beam 41 and the other end connected to the sub-arm beam 42 for buffering the main arm beam 41 when the cutting unit 50 moves in a direction perpendicular to the preset working plane.
Specifically, referring to fig. 4 to 5, in the embodiment of the present application, the elastic member 43 is a spring 431, one end of the spring 431 is connected to the main arm beam 41, the other end is connected to the sub-arm beam 42, and the spring 431 is disposed in an inclined manner, and an inclined direction of the spring 431 is adjusted according to the weight of the cutting unit 50.
When the link mechanism 40 swings down in the height direction and the cutting unit 50 has a large mass, the spring 431 is inclined toward the driving mechanism 10 side. When the cutting unit 50 drives the connecting mechanism 40 to move downwards in the height direction, the spring 431 is stretched along with the downward swing of the connecting mechanism 40, so that an upward pulling force is applied to the lower main arm beam 41 to reduce the downward swing speed of the main arm beam 41, and the cutting unit 50 is prevented from colliding with the ground during the downward swing.
And when the weight of the cutting unit 50 is light, the spring is inclined toward the side of the cutting unit 50. In the process that the cutting unit 50 drives the connecting mechanism 40 to move downwards in the height direction, when the connecting mechanism 40 moves downwards rapidly to enable the cutting unit 50 to be attached to the ground rapidly or the connecting mechanism 40 keeps the cutting unit 50 in the state of being attached to the ground, the spring 431 applies pulling force to the auxiliary arm beam 42, so that the connecting mechanism 40 can swing downwards rapidly, and the connecting mechanism 40 is maintained in a swinging-down posture to counteract the influence caused by the upward and downward swinging of the connecting mechanism 40 under the action of inertia force.
In one embodiment of the present application, the attachment mechanism 40 further includes a stiffener 44; the reinforcing member 44 is attached to the two main arm beams 41, or the reinforcing member 44 is attached to the two sub arm beams 42.
Specifically, in the embodiment of the present application, referring to fig. 4 and 6, the reinforcing member 44 is X-shaped such that the reinforcing member 44 has four fixed ends, and the four fixed ends of the reinforcing member 44 are fixed to the sub-arm beams 42 located on both sides of the driving mechanism 10, so as to improve the strength of the entire connecting mechanism 40.
In another embodiment of the present application, four fixed ends of the reinforcing member 44 are fixed to the main arm beams 41 located on both sides of the driving mechanism 10.
In one embodiment of the present application, the rotary device further includes a position sensor 60 for sensing the position of movement of the linkage 40. Initially, the connecting mechanism 40 and the cutting unit 50 are at the highest point, at which time the cutting unit 50 is at a zero position, wherein the cutting unit 50 is at the zero position as shown in fig. 4 and 5. The motor shaft of the rotating motor is rotated by a predetermined angle so that the driving shaft 131 drives the coupling mechanism 30 and the connecting mechanism 40 drives the cutting unit 50 to move to a predetermined working height, as shown in fig. 3 and 6.
Specifically, in an embodiment of the present application, referring to fig. 7, the position sensor 60 includes a hall sensor 61 disposed on a housing of the driving motor 12 and a magnet member 62 disposed on the sub-arm beam 42, the hall sensor 61 is electrically connected to the driving motor 12 and used for sensing the magnet member 62, when the lifting device is started, the connecting mechanism 40 is located at the highest position, at this time, the position of the magnet member 62 corresponds to the position of the hall sensor 61, and the hall sensor 61 senses the magnet member 62, the hall sensor 61 converts the zero position of the connecting mechanism 40 into a zero position electric signal and transmits the zero position electric signal to the driving motor 12, the driving motor 12 makes the motor shaft drive the driving shaft 131 to rotate along the first direction according to the zero position of the connecting mechanism 40 as a reference point, so that the driving shaft 131 drives the coupling mechanism 30 and the connecting mechanism 40 to drive the cutting unit 50 to move to a preset working height, the stop rotation of the driving motor 12, the cutting unit 50 trims the grass leaves on the grassland, and after the grass is trimmed, the lifting device is closed, and at this time, the driving motor 12 rotates in the second direction, and the cutting unit 50 is moved to the initial position.
In another embodiment of the present application, referring to FIG. 8, the position sensor 60 is an absolute position encoder 63 disposed on the drive motor 12. Motor absolute position encoder 63 and driving motor 12 electric connection are used for the turned angle of the motor shaft of induction drive motor 12, the rotatory angle of presetting of input in motor absolute position encoder 63, rotate to when rotatory angle of presetting at the motor shaft of driving motor 12, driving motor 12 stall, cutting unit 50 is repaiied the grass leaf on the meadow, after pruning the completion to the meadow, close this elevating gear, and driving motor 12 rotates along the second direction this moment, and make cutting unit 50 move to initial position.
Another aspect of the present application provides a lawn mower including a drive base 70, a lifting device, and a cutting unit 50. Wherein, elevating gear is the elevating gear that the implementation provided. The lifting device is connected to the driving base 70, and the driving base 70 drives the lifting device to move on the ground.
Referring to fig. 1 and 2, in the lawn mower provided in the embodiment of the present application, the driving mechanism 10 in the lifting device is fixed to a driving base 70 of the lawn mower, the cutting unit 50 is connected to a driving shaft 131 of the driving mechanism 10 through a coupling mechanism 30 and a connecting mechanism 40 in the lifting device, and during the process that the driving base 70 drives the cutting unit 50 to trim the lawn, the driving shaft 131 adjusts the cutting unit 50 to a preset working height through the coupling mechanism 30 and the connecting mechanism 40 in the lifting device, so that the cutting unit 50 can trim the lawn on the ground; meanwhile, since the coupling mechanism 30 has a rotation angle range that freely rotates around the axis of the driving shaft 131, the coupling mechanism 30 can allow the cutting unit 50 to move up and down in the height direction according to the change of the terrain and the landform to adapt to different terrains, and ensure that the distances between the cutting unit 50 and the ground in different terrains are always equal, so that the heights of the cutting unit 50 and the ground are always the same, thereby ensuring that the heights of grass blades on the grass trimmed by the cutting unit 50 in different terrains and landforms are the same; during the up-and-down movement of the cutting unit 50 in the height direction, and the coupling mechanism 30 can prevent the cutting unit 50 from driving the driving shaft 131 to rotate during the up-and-down movement within the rotation angle range of free rotation, so as to protect the driving mechanism 10.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.
Claims (10)
1. A lifting device is applied to a mower and is characterized by comprising:
a drive mechanism having a drive shaft;
the lifting mechanism comprises a coupling mechanism and a connecting mechanism, the coupling mechanism is connected with the driving shaft, the connecting mechanism is connected with the coupling mechanism, and the connecting mechanism is used for connecting a cutting unit of the mower;
the coupling mechanism is provided with a rotation angle range which freely rotates around the axis of the driving shaft, and the driving shaft is used for driving the connecting mechanism to swing through the coupling mechanism when rotating to exceed the rotation angle range, so that the connecting mechanism drives the cutting unit to realize lifting.
2. The lifting device as claimed in claim 1, wherein the coupling mechanism is arranged in a radial direction of the drive shaft and has a first coupling end and a second coupling end which are opposed;
the coupling mechanism is connected between the driving shaft and the first connecting end in a transmission mode, and the second connecting end is used for being in rotary connection with the cutting unit.
3. The lifting device as claimed in claim 2, wherein the coupling mechanism comprises:
the first fixing piece is fixedly connected to the driving shaft;
and the second fixing piece is connected with the first fixing piece, and a rotating clearance is formed between the second fixing piece and the first fixing piece, so that the second fixing piece can rotate around the axis of the driving shaft in a preset rotating angle range relative to the first fixing piece.
4. The lifting device as claimed in claim 3, wherein the first fixing member is provided with a clearance groove having opposite first and second abutment ends in a rotational direction of the first fixing member;
the second fixing piece is provided with a limiting block, the limiting block is contained in the clearance groove, and the arc length between the first abutting end and the second abutting end is larger than that of the limiting block along the rotation direction of the first fixing piece.
5. The lifting device as claimed in claim 3, wherein the second fixing member is provided with a clearance groove having opposite first and second abutment ends in a rotational direction of the first fixing member;
the first fixing piece is provided with a limiting block, the limiting block is contained in the clearance groove, and the arc length between the first abutting end and the second abutting end is larger than that of the limiting block along the rotation direction of the first fixing piece.
6. The lift device of claim 4, wherein the first mount includes a cylindrical structure and a disc structure coupled to the cylindrical structure;
the cylinder structure is provided with a fixing hole, the fixing hole penetrates through the cylinder structure along the axial direction of the cylinder structure, the fixing hole is coaxial with the driving shaft and is sleeved on the driving shaft, and the second fixing piece is sleeved on the cylinder structure;
the clearance groove is arranged on one side of the disc body structure facing the second fixing piece, and the limiting block is arranged on one side of the second fixing piece facing the first fixing piece.
7. The lift device recited by claim 6 wherein said coupling mechanism comprises:
the main arm beam is connected to the second fixing part at one end and is rotatably connected to the cutting unit at the other end;
and one end of the main arm beam is rotatably connected to the driving mechanism, and the other end of the main arm beam is rotatably connected to the cutting unit.
8. The lifting device as claimed in claim 7, wherein the connection mechanism further comprises an elastic member having one end connected to the main arm beam and the other end connected to the sub-arm beam for buffering the main arm beam when the cutting unit moves in the height direction.
9. The lift device of claim 8, wherein the attachment mechanism further comprises a reinforcement member;
the connecting mechanisms are symmetrical along a direction perpendicular to the rotating axis of the driving shaft, and the reinforcing piece is connected to the two main arm beams;
alternatively, the reinforcing member is connected to both of the sub-arm beams.
10. A lawn mower, comprising:
a drive base;
the lifting device as claimed in any one of claims 1 to 9, which is connected to the driving base and moves on the ground by the driving base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122995242.7U CN216492035U (en) | 2021-11-30 | 2021-11-30 | Lifting device and mower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122995242.7U CN216492035U (en) | 2021-11-30 | 2021-11-30 | Lifting device and mower |
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| Publication Number | Publication Date |
|---|---|
| CN216492035U true CN216492035U (en) | 2022-05-13 |
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| CN202122995242.7U Active CN216492035U (en) | 2021-11-30 | 2021-11-30 | Lifting device and mower |
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| CN (1) | CN216492035U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115367661A (en) * | 2022-08-08 | 2022-11-22 | 歌尔股份有限公司 | Lifting mechanism |
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2021
- 2021-11-30 CN CN202122995242.7U patent/CN216492035U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115367661A (en) * | 2022-08-08 | 2022-11-22 | 歌尔股份有限公司 | Lifting mechanism |
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Address after: 518000 Factory Building 401, Runheng Industrial Plant 1, Fuyuan Road, Zhancheng Community, Fuhai Street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Zhenghao Innovation Technology Co.,Ltd. Country or region after: China Address before: Building E, 1st Floor, Jiehe Industrial City, Shuitian Community, Shiyan Street, Bao'an District, Shenzhen Patentee before: Shenzhen Zhenghao Innovation Technology Co.,Ltd. Country or region before: China |