CN215301571U - Cutter head assembly and mower - Google Patents
Cutter head assembly and mower Download PDFInfo
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- CN215301571U CN215301571U CN202121480674.8U CN202121480674U CN215301571U CN 215301571 U CN215301571 U CN 215301571U CN 202121480674 U CN202121480674 U CN 202121480674U CN 215301571 U CN215301571 U CN 215301571U
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Abstract
The utility model is suitable for the field of mowers, and provides a cutter head assembly and a mowers, wherein the cutter head assembly comprises: the first fluted disc is driven by a motor to rotate, and first teeth arranged in a ring shape are arranged on the first fluted disc; the cutter head is provided with second insections which are annularly arranged and can be meshed with the first insections; the elastic piece is arranged on the cutter head and provides pre-tightening force for the engagement of the second insections and the first insections. According to the embodiment of the utility model, when the cutter head is not clamped, the first tooth pattern is meshed with the second tooth pattern, the motor drives the cutter head to rotate, when the cutter head is clamped, the cutter head and the second tooth pattern cannot rotate, but the first tooth pattern and the first tooth pattern can break away from the pre-tightening force of the elastic part to rotate under the driving of the motor, so that the first tooth pattern and the second tooth pattern are meshed and separated, the motor can normally rotate, the phenomena of overlarge current or machine halt and the like caused by motor blockage are prevented, an overload protection effect is realized, and the working efficiency of the mower is improved.
Description
Technical Field
The utility model belongs to the field of mowers, and particularly relates to a cutter head assembly and a mower.
Background
Lawn mowers (Lawn mowers) are also known as weed trimmers, lawnmowers, Lawn trimmers, and the like. A mower (or a mowing robot) is a mechanical tool for trimming lawns, vegetations and the like, and comprises a chassis, a mower body, a cutter head assembly, a travelling mechanism and a control part, wherein the mower body and the cutter head assembly are arranged on the chassis, and the travelling mechanism, a handrail and the control part are arranged on the mower body.
The cutter head assembly comprises a motor, a cutter head is arranged on an output shaft of the motor, and the high-speed rotation of the motor is utilized to drive a blade on the cutter head to rotate for mowing so as to replace manual mowing, so that the operation of workers is not needed, the operation time of weeding workers is saved, and a large amount of manpower resources are reduced.
However, when the lawn mower works on uneven or deep grass, the cutter head is easily stuck by the raised part (including the local protruded ground, small stones and the like) on the ground or the dense deep grass, so that the motor current and the load of the lawn mower are too large, the shutdown phenomenon occurs, and the working efficiency of the lawn mower is affected.
SUMMERY OF THE UTILITY MODEL
The utility model provides a cutter head assembly, and aims to solve the problem that a cutter head is easy to clamp.
The utility model is thus realized, a cutterhead assembly, comprising:
a motor base;
the motor is arranged on the motor base;
the first fluted disc is fixedly connected with an output shaft of the motor and driven by the motor to rotate, and first teeth arranged in a ring shape are arranged on the first fluted disc;
the cutter head is provided with second insections which are annularly arranged and can be meshed with the first insections;
and the elastic piece is arranged on the cutter head and provides pretightening force for the meshing of the second insections and the first insections.
Furthermore, a second fluted disc is arranged on one side, facing the first fluted disc, of the cutter head, and the second fluted disc is provided with the second flutes.
Furthermore, still first anticreep piece of fixedly connected with on the output shaft of motor, second fluted disc middle part is provided with the confession the via hole that the output shaft of motor passed, be provided with the flange on the via hole lateral wall, the flange is located first fluted disc with between the first anticreep piece, elastic component one end elasticity is supported and is leaned on the flange is kept away from first insection one side, and other end elasticity is supported and is leaned on first anticreep piece.
Furthermore, a convex ring is arranged in the middle of the first fluted disc, one end of the first anti-falling part is abutted against the convex ring, and a clamp spring is arranged at the other end of the first anti-falling part.
Furthermore, the elastic element is a spring and is sleeved on the outer circumference of the convex ring.
Furthermore, a protruding part is arranged on the periphery of one side of the first anti-falling part abutted against the elastic part, and the elastic part is positioned in the protruding part.
Furthermore, the elastic piece is an extension spring, one end of the elastic piece is connected with the cutter head after the elastic piece is extended, and the other end of the elastic piece is connected with the first fluted disc.
Furthermore, still fixedly connected with second anticreep piece on the output shaft of motor, the blade disc is located first fluted disc with between the second anticreep piece, elastic component one end elasticity supports and leans on the blade disc, and other end elasticity supports and leans on the second anticreep piece.
Still further, the cutter head assembly further comprises a cutter head cover installed on the motor base.
The utility model also provides a mower which comprises a mower chassis, a mower body and the cutter head assembly, wherein the motor base is arranged on the mower chassis.
The embodiment of the utility model is provided with the first insection and the second insection which are meshed with each other, and is also provided with the elastic piece which is meshed with the second insection and provides a pretightening force, when the cutter head is not clamped, the first insection is meshed with the second insection, the motor can drive the cutter head to rotate, when the cutter head is clamped, although the cutter head and the second insection cannot rotate, the first fluted disc and the first insection can break away the pretightening force of the elastic piece to rotate under the driving of the motor, so that the first insection is meshed with the second insection, the motor can normally rotate, the phenomena of overlarge current or machine halt and the like caused by motor blockage are prevented, the overload protection effect is achieved, and the working efficiency of the mower is improved.
Drawings
FIG. 1 is a perspective view of a lawn mower provided by the present invention;
FIG. 2 is a perspective view of the cutterhead assembly provided by the present invention;
FIG. 3 is an exploded view of the cutterhead assembly provided by the present invention;
FIG. 4 is a partial cross-sectional view of the cutterhead assembly provided by the present invention;
fig. 5 is an enlarged view of a portion a in fig. 4.
In the figure, 100, a cutter head assembly; 10. a motor base; 20. a motor; 30. a first fluted disc; 31. a first insection; 32. a convex ring; 40. a cutter head; 41. a blade; 50. an elastic member; 60. a cutter head cover; 70. a second fluted disc; 71. a second insection; 72. a via hole; 73. a flange; 80. a first drop prevention member; 81. a protrusion portion; 90. a clamp spring; 200. a lawn mower chassis.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further 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 utility model and are not intended to limit the utility model.
The present invention provides a cutter head assembly comprising: the first fluted disc is fixedly connected with an output shaft of the motor and driven by the motor to rotate, and first teeth arranged in a ring shape are arranged on the first fluted disc; the cutter head is provided with second insections which are annularly arranged and can be meshed with the first insections; and the elastic piece is arranged on the cutter head and provides pretightening force for the meshing of the second insections and the first insections. The embodiment of the utility model is provided with the first insection and the second insection which are meshed with each other, and is also provided with the elastic piece which is meshed with the second insection and provides a pretightening force, when the cutter head is not clamped, the first insection is meshed with the second insection, the motor can drive the cutter head to rotate, when the cutter head is clamped, although the cutter head and the second insection cannot rotate, the first fluted disc and the first insection can break away the pretightening force of the elastic piece to rotate under the driving of the motor, so that the first insection is meshed with the second insection, the motor can normally rotate, the phenomena of overlarge current or machine halt and the like caused by motor blockage are prevented, the overload protection effect is achieved, and the working efficiency of the mower is improved.
Example one
As shown in fig. 1, the present invention further provides a lawn mower, which includes a lawn mower chassis 200, a lawn mower body (not shown), and the above-mentioned cutter head assembly 100, wherein the motor base 10 is mounted on the lawn mower chassis 200.
As shown in fig. 2-5, the cutterhead assembly 100 includes:
a motor base 10;
a motor 20 disposed on the motor base 10;
the first fluted disc 30 is fixedly connected with an output shaft of the motor 20 and driven by the motor 20 to rotate, and first teeth 31 which are annularly arranged are arranged on the first fluted disc 30;
the cutter head 40 is provided with second insections 71, and the second insections 71 are annularly arranged and can be meshed with the first insections 31;
and the elastic piece 50 is arranged on the cutter head 40 and provides pretightening force for the meshing of the second insections 71 and the first insections 31.
Wherein, the motor base 10 is installed on the lawn mower chassis 200 for fixing the motor 20. An output shaft of the motor 20 extends out of the motor base 10 and is fixedly connected to the first gear disc 30, and the motor 20 can drive the first gear disc 30 and the first tooth pattern 31 to rotate. The second insection 71 is directly or indirectly arranged on the cutter head 40 and meshed with the first insection 31, the first insection 31 and the second insection 71 are annularly arranged to form a circular ring gear, an output shaft of the motor 20 is positioned at the center of the circle, and when the motor 20 drives the first insection 31 to rotate, the second insection 71 and the cutter head 40 can be driven to rotate. A plurality of blades 41 are uniformly distributed on the periphery of the cutter head 40 and used for mowing when the cutter head 40 rotates. The cutter head assembly 100 further comprises a cutter head cover 60 mounted on the motor base 10, wherein the cutter head cover 60 is used for protecting the cutter head 40 and the blades 41 and can be fixedly mounted on the motor base 10. The elastic element 50 can be directly or indirectly arranged on the cutter disc 40 and provides pre-tightening force for the meshing of the second insections 71 and the first insections 31.
When the mower works on grasslands such as flat ground and flat sloping ground, no obstacles interfere with the rotation of the cutter head 40, and the motor 20 can drive the cutter head 40 to rotate by meshing the first insections 31 with the second insections 71. When obstacles such as grass protrusions interfere with the rotation of the cutter head 40, the cutter head 40 is locked and cannot rotate, and because the first insection 31 and the second insection 71 are meshed through the pretightening force of the elastic piece 50, the pretightening force is the restoring elastic force after the elastic piece 50 is stretched or the restoring elastic force after the elastic piece 50 is compressed, when the first insection 31 rotates under the driving of the motor 20, the rotating force of the motor 20 acts on an insection inclined plane to generate a pushing force towards the elastic piece 50, the pushing force is opposite to the pretightening force, the pushing force further stretches or compresses the elastic piece 50 to separate the first insection 31 from the second insection 71, so that the first insection 31 can continue to rotate under the condition that the second insection 71 cannot rotate, at the moment, the maximum load of the motor 20 only needs to be larger than the pushing force of the elastic piece 50 until the second insection 71 is disengaged from the first insection 31, the phenomenon that the motor 20 is overloaded and the phenomenon that the motor 20 is blocked to rotate due to the fact that the motor 20 cannot rotate after the cutter head 40 is clamped, so that current is overlarge or the machine stops is avoided.
In the embodiment of the utility model, the first insection 31 and the second insection 71 which are meshed are arranged, the elastic member 50 which is used for providing a pretightening force by the meshing of the second insection 71 and the first insection 31 is also arranged, when the cutter head 40 is not clamped, the first insection 31 and the second insection 71 are meshed, the motor 20 can drive the cutter head 40 to rotate, when the cutter head 40 is clamped, although the cutter head 40 and the second insection 71 cannot rotate, the first fluted disc 30 and the first insection 31 can break away from the pretightening force of the elastic member 50 and rotate under the driving of the motor 20, so that the first insection 31 and the second insection 71 are meshed and separated, the motor 20 can normally rotate, the phenomena of overlarge current or machine halt and the like caused by the motor 20 being blocked are prevented, an overload protection effect is achieved, and the working efficiency of the mower is improved.
Example two
In an alternative embodiment of the present invention, as shown in fig. 3-5, a second cog 70 is disposed on a side of the cutter head 40 facing the first cog 30, and the second cog 71 is disposed on the second cog 70.
The second toothed disc 70 may be mounted to the cutter disc 40 on the side facing the first toothed disc 30 or may be integrally formed with the cutter disc 40 on the side facing the first toothed disc 30. The second gear 70 and the cutter head 40 are divided into two parts, so that the processing difficulty of the second gear 70 and the cutter head 40 can be simplified, and the cost can be reduced.
Furthermore, a first anti-release member 80 is fixedly connected to the output shaft of the motor 20, a through hole 72 through which the output shaft of the motor 20 passes is formed in the middle of the second gear plate 70, a flange 73 is formed on the side wall of the through hole 72, the flange 73 is located between the first gear plate 30 and the first anti-release member 80, one end of the elastic member 50 elastically abuts against one side of the flange 73, which is far away from the first insection 31, and the other end elastically abuts against the first anti-release member 80.
In this embodiment, the first anti-slip member 80 is fixed on the output shaft, as the first gear plate 30, and the distance between the first anti-slip member 80 and the first gear plate 30 is fixed, and the output shaft of the motor 20 passes through the through hole 72 of the second gear plate 70, so that the second gear plate 70 can slide between the first anti-slip member 80 and the first gear plate 30, and the elastic member 50 is disposed between the flange 73 side away from the first tooth pattern 31 and the first anti-slip member 80, so that the second gear plate 70 is abutted against the first gear plate 30, and a pre-tightening force is provided for the engagement between the second tooth pattern 71 and the first tooth pattern 31, thereby engaging the second tooth pattern 71 with the first tooth pattern 31.
The elastic member 50 in this embodiment is a compression spring or a resilient plate, and when the elastic member 50 is located between the flange 73 and the first anti-slip member 80, it is in a compressed state, and its elastic restoring force pushes the cutter head 40 toward the first fluted disc 30, so as to provide a pre-tightening force for the engagement between the second flutes 71 and the first flutes 31. When obstacles such as grass protrusions interfere with the rotation of the cutter head 40, the cutter head 40 is locked and cannot rotate, when the first insection 31 rotates under the driving of the motor 20, the rotating force of the motor 20 acts on an insection inclined plane to generate a thrust force towards the elastic member 50, the thrust force is opposite to the pretightening force, the thrust force further compresses the elastic member 50 to separate the first insection 31 from the second insection 71, and therefore, the first insection 31 can continue to rotate under the condition that the second insection 71 cannot rotate.
Furthermore, a convex ring 32 is disposed in the middle of the first fluted disc 30, one end of the first anti-slip member 80 abuts against the convex ring 32, and the other end is provided with a clamp spring 90. Because the output shaft of the motor 20 is generally cylindrical, smooth in surface and free of stress surface, in the embodiment of the present invention, the protruding ring 32 is arranged to abut against one end of the first anti-falling part 80, and then the snap spring 90 abuts against the other end of the first anti-falling part 80, so that the first anti-falling part 80 is fixed, and the installation is simple.
Further, the elastic member 50 is a spring, and is disposed on the outer circumference of the protruding ring 32. In this embodiment, the elastic member 50 is a spring, and the end portion of the elastic member is circular, so that when the spring is compressed to provide a pre-tightening force for the engagement between the second insection 71 and the first insection 31, the engagement force between the annular second insection 71 and the first insection 31 can be uniformly distributed, thereby preventing the second insection 71 and the first insection 31 from being dislocated or eccentric when engaged.
Further, a protrusion 81 is provided at a side circumference of the first anti-slip member 80 abutting against the elastic member 50, and the elastic member 50 is located in the protrusion 81. The protrusion 81 may be a protruding ring or a plurality of blocks distributed in a ring shape, and is used for limiting the elastic member 50 and preventing the elastic member 50 from sliding away from the center of the output shaft under the action of external force.
EXAMPLE III
In another optional embodiment of the present invention, a second toothed disc 70 is disposed on a side of the cutter disc 40 facing the first toothed disc 30, the second toothed disc 71 is disposed on the second toothed disc 70, the elastic element 50 is an extension spring, one end of the extension spring is connected to the cutter disc 40, the other end of the extension spring is connected to the first toothed disc 30, and the extension spring pulls the cutter disc 40 toward the first toothed disc 30, so that the second toothed disc 71 is meshed with the first toothed disc 31.
When obstacles such as grass protrusions interfere with the rotation of the cutter head 40, the cutter head 40 is locked and cannot rotate, when the first insection 31 rotates under the driving of the motor 20, the rotating force of the motor 20 acts on an insection inclined plane to generate a thrust force towards the elastic member 50, the thrust force is opposite to the pretightening force, the thrust force further stretches the elastic member 50 to separate the first insection 31 from the second insection 71, and therefore, the first insection 31 can continue to rotate under the condition that the second insection 71 cannot rotate.
Example four
In another alternative embodiment of the present invention, a second anti-disengaging member (not shown in the drawings) is further fixedly connected to the output shaft of the motor 20, the cutter plate 40 is located between the first fluted disc 30 and the second anti-disengaging member, and one end of the elastic member 50 elastically abuts against the cutter plate 40, and the other end elastically abuts against the second anti-disengaging member.
Specifically, the middle portion of the cutter head 40 protrudes toward the first fluted disc 30, so that the middle portion of the cutter head 40 has an inner concave cavity which is upward from the bottom, and the elastic member 50 and the second anti-slip member are located in the inner concave cavity and are higher than the blades 41. The second anti-slip member structure may be the same as the first anti-slip member 80, and the first gear 30 and the second anti-slip member are fixed to each other.
The elastic member 50 in this embodiment is a compression spring or a spring, and when the elastic member 50 is located between the cutter 40 and the second anti-slip member, it is in a compressed state, and its elastic restoring force pushes the cutter 40 toward the first fluted disc 30, so as to provide a pre-tightening force for the engagement between the second teeth 71 and the first teeth 31. When obstacles such as grass protrusions interfere with the rotation of the cutter head 40, the cutter head 40 is locked and cannot rotate, when the first insection 31 rotates under the driving of the motor 20, the rotating force of the motor 20 acts on an insection inclined plane to generate a thrust force towards the elastic member 50, the thrust force is opposite to the pretightening force, the thrust force further compresses the elastic member 50 to separate the first insection 31 from the second insection 71, and therefore, the first insection 31 can continue to rotate under the condition that the second insection 71 cannot rotate.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An impeller assembly, comprising:
a motor base;
the motor is arranged on the motor base;
the first fluted disc is fixedly connected with an output shaft of the motor and driven by the motor to rotate, and first teeth arranged in a ring shape are arranged on the first fluted disc;
the cutter head is provided with second insections which are annularly arranged and can be meshed with the first insections;
and the elastic piece is arranged on the cutter head and provides pretightening force for the meshing of the second insections and the first insections.
2. The cutterhead assembly of claim 1, wherein a second toothed disc is provided on the side of the cutterhead facing the first toothed disc, the second toothed disc being provided on the second toothed disc.
3. The cutter head assembly according to claim 2, wherein a first anti-release member is further fixedly connected to the output shaft of the motor, a through hole for the output shaft of the motor to pass through is formed in the middle of the second gear plate, a flange is arranged on a side wall of the through hole and located between the first gear plate and the first anti-release member, one end of the elastic member is elastically abutted against one side of the flange, which is far away from the first tooth pattern, and the other end of the elastic member is elastically abutted against the first anti-release member.
4. The cutterhead assembly of claim 3, wherein a collar is disposed in the middle of the first chainring, and the first anti-slip member has one end abutting against the collar and the other end provided with a snap spring.
5. The cutterhead assembly of claim 4, wherein said resilient member is a spring disposed about the outer circumference of said nose ring.
6. The cutterhead assembly of claim 3, wherein a side peripheral edge of said first anti-slip member against which said resilient member abuts is provided with a projection in which said resilient member is located.
7. The cutterhead assembly of claim 2, wherein the resilient member is an extension spring, and is connected at one end to the cutterhead and at the other end to the first toothed disc after being extended.
8. The cutterhead assembly of claim 1, wherein a second anti-disengaging member is further fixedly connected to the output shaft of the motor, the cutterhead is located between the first fluted disc and the second anti-disengaging member, one end of the elastic member elastically abuts against the cutterhead, and the other end of the elastic member elastically abuts against the second anti-disengaging member.
9. The cutterhead assembly of claim 1, further comprising a cutterhead cover mounted on the motor base.
10. A lawnmower comprising a mower chassis, a mower body and a cutter head assembly according to any one of claims 1 to 9, wherein the motor mount is mounted on the mower chassis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121480674.8U CN215301571U (en) | 2021-06-30 | 2021-06-30 | Cutter head assembly and mower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121480674.8U CN215301571U (en) | 2021-06-30 | 2021-06-30 | Cutter head assembly and mower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215301571U true CN215301571U (en) | 2021-12-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121480674.8U Active CN215301571U (en) | 2021-06-30 | 2021-06-30 | Cutter head assembly and mower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215301571U (en) |
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2021
- 2021-06-30 CN CN202121480674.8U patent/CN215301571U/en active Active
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