CN113661824B

CN113661824B - Cutting, irrigating and grass mowing machine with function head convenient and rapid to replace

Info

Publication number: CN113661824B
Application number: CN202010412997.7A
Authority: CN
Inventors: 倪祖根
Original assignee: Suzhou Kingclean Precision Machinery Co Ltd
Current assignee: Suzhou Kingclean Precision Machinery Co Ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2023-06-20
Anticipated expiration: 2040-05-15
Also published as: CN113661824A

Abstract

The invention relates to a cutting and irrigating grass trimmer with a function head convenient to replace quickly, which comprises: the gear box is provided with an output shaft, and a fixing piece is arranged on the gear box; the quick-change connector is provided with a first position and a second position on the fixing piece, when the fixing piece is positioned at the first position, the fixing piece is clamped into the quick-change connector, and when the fixing piece is positioned at the second position, the fixing piece can be separated from the quick-change connector; the locking mechanism is locked with the gear box when the fixing piece is positioned at the first position; and when the fixing piece is positioned at the first position, the output shaft is connected with the connecting shaft of the functional head. When installing new function head, insert the mounting and have the second position of the quick change joint of new function head, switch the mounting to the first position again, make quick change joint and gear box joint to through locking mechanical system with quick change joint and gear box locking, accomplish the function head and be connected with the gear box, the operation of changing the function head is succinct convenient, need not to use auxiliary extracting tool, promotes user's use experience greatly.

Description

Cutting, irrigating and grass mowing machine with function head convenient and rapid to replace

Technical Field

The invention relates to a gardening tool, in particular to a cutting, irrigating and grass mowing machine with a function head convenient and rapid to replace.

Background

The grass cutting and irrigating machine is used for trimming lawns, gardens, shrubs and the like, and the principle is that power is generated through a gear box to drive a functional head to rotate for cutting grass or irrigating. The cutting and irrigating grass trimmer needs to use different functional heads when trimming different objects, such as assembling a grass trimming head when trimming lawns and assembling a cutting and irrigating head when trimming shrubs. When switching the functional heads, the functional heads mounted on the gear box are required to be detached and new functional heads are required to be mounted, and the detaching and mounting processes usually require tools such as a spanner, a screwdriver or an electric screwdriver, so that the detaching and mounting processes are very troublesome.

Disclosure of Invention

Based on this, it is necessary to provide a mower to solve the problem of complicated switching operation of the functional head, so as to change the functional head conveniently and adapt to different situations.

A cutting and irrigating grass trimmer with a quick-change functional head, comprising:

the gear box is provided with an output shaft, and a fixing piece is arranged on the gear box;

the quick-change connector is provided with a first position and a second position on the quick-change connector, when the fixing piece is positioned at the first position, the fixing piece is clamped into the quick-change connector, and when the fixing piece is positioned at the second position, the fixing piece can be separated from the quick-change connector;

the locking mechanism is arranged on the quick-change connector, and is locked with the gear box when the fixing piece is positioned at the first position;

the function head is fixed on the quick-change connector, the function head is provided with a connecting shaft, and when the fixing piece is positioned at the first position, the output shaft is connected with the connecting shaft.

The function head of the grass cutting and irrigating machine is arranged on the quick-change connector and is connected with the output shaft of the gear box, and the output shaft can drive the function head to rotate to realize the grass cutting or irrigation operation when rotating. When the functional head is ready to be switched, the fixing piece is switched from the first position to the second position, so that the fixing piece is separated from the quick-change connector, and the quick-change connector and the functional head are detached. When installing new function head, insert the mounting and have the second position of the quick change joint of new function head, switch the mounting to the first position again, make quick change joint and gear box joint to through locking mechanical system with quick change joint and gear box locking, accomplish the function head and be connected of gear box, the operation of changing the function head is succinct convenient, need not to use extracting tool such as spanner, screwdriver, has promoted user's use experience greatly.

In one embodiment, a sliding clamping groove is formed in the quick-change connector along the circumferential direction, and the fixing piece is clamped in from one end of the sliding clamping groove and slides to the other end along the sliding clamping groove; the fixing piece is located at the first position when being clamped into the clamping groove, and the fixing piece is located at the second position when being slid to the end portion of the sliding clamping groove. When the functional head is disassembled and installed, the position of the fixing piece is switched to be an important ring, and when the quick-change connector is rotated relative to the gear box, the fixing piece can be switched between the first position and the second position, and the position of the fixing piece is switched through rotation, so that the functional head is convenient and easy to operate without a disassembling tool, and the functional head is convenient to replace.

In one embodiment, the fixing member has a rod body and a tip connected to the rod body, and the sliding clamping groove includes: the first inserting groove is used for inserting the end head, the first sliding groove is used for sliding the rod body, the first inserting groove is communicated with the first sliding groove, and the fixing piece is located at a second position when the end head is inserted into the first inserting groove; when the rod body is screwed into the end part of the first sliding groove, the fixing piece is located at the first position.

In one embodiment, the quick-change connector comprises: the casing, establish locating plate in the casing, first insertion groove with first sliding tray is seted up on the casing, set up on the locating plate: a second insertion groove corresponding to the first insertion groove, and a second sliding groove corresponding to the first sliding groove; the positioning plate is provided with a first height and a second height, the second insertion groove is formed in the first height, the second sliding groove extends from the first height to the second height along the screwing direction of the rod body, and the second height is lower than the first height. When the end of the fixing piece is inserted into the first inserting groove, the second inserting groove is also penetrated at the same time, the rod body of the fixing piece penetrates through the first inserting groove and the second inserting groove at the same time, the end is positioned below the second inserting groove, a certain gap is formed between the end of the fixing piece and the locating plate rather than between the end of the fixing piece and the locating plate in order to ensure smooth sliding of the fixing piece, and the fixing piece is prevented from entering the second inserting groove to cause the fixing piece to be unable to slide in the first sliding groove and the second sliding groove. When the rod body slides to the end parts of the first sliding groove and the second sliding groove, the rod body is propped against one ends of the first sliding groove and the second sliding groove, and a certain gap is reserved between the end head and the positioning plate, so that the position between the quick-change connector and the gear box along the axial direction of the rod body is easy to appear. In this embodiment, since the second sliding groove extends from top to bottom, the end of the rod body abuts against the protrusion of the positioning plate when the rod body slides to the end position of the second sliding groove, i.e. the first position, and in the sliding process of the fixing piece, the protrusion on the positioning plate fills the gap between the end and the positioning plate, so that the situation that the axis movement of the fixing piece occurs when the fixing piece is in the first position, and the output shaft of the gear box is in contact fit with the connector of the functional head is avoided.

In one embodiment, a supporting portion is disposed in the housing, the supporting portion is disposed at the bottom of the positioning plate, and the supporting portion, the second insertion groove and a portion corresponding to the second sliding groove are hollowed out to form a sliding space for sliding of the fixing piece. The supporting part supports the positioning plate, and leaves a sliding space for the end head of the fixing piece to slide, so that the stress intensity of the quick-connection end head is enhanced, and meanwhile, the production material is saved.

In one embodiment, the gear box is provided with a locking groove along the radial direction, and the locking mechanism comprises:

the locking cavity is arranged on the quick-change connector;

the locking rod penetrates through the locking cavity, and when the fixing piece is located at the first position, the locking rod is opposite to the locking groove;

and the elastic piece is arranged in the locking cavity and is used for applying elastic force inserted into the locking groove to the locking rod. The engagement of the fixing member with the housing fixes the gear case and the housing in the axial direction of the gear case, and the fixing mechanism locks the gear case in the radial direction of the gear case.

In one embodiment, the locking lever comprises: the rod body penetrates through the locking cavity, and the displacement piece is arranged in the locking cavity and connected with the rod body, and the displacement piece is propped against the elastic piece. The mounting is located the first position, and the locking lever aligns with the locking groove this moment, and under the elastic force effect of elastic component, the locking lever gets into the locking inslot automatically and accomplishes the locking, has realized cutting the installation of filling head and quick change joint on the gear box, need not the user and carries out locking operation and can accomplish by oneself, has reduced user's operation burden greatly.

In one embodiment, the locking mechanism further comprises: cover the cover body in locking chamber, the cover body with locking chamber sliding connection, the locking lever is keeping away from one side of gear box has the pole tail end, pole tail end card goes into the cover body, the cover body is being kept away from when the gear box direction slides the body of rod is followed the locking groove is pulled out.

In one embodiment, the quick-change connector further comprises: and the bearing is fixed on the inner ring of the shell, and the connecting shaft of the functional head is arranged in the bearing.

In one embodiment, the connecting shaft is provided with a protruding ring, and the protruding ring is erected on the top of the bearing. The connecting shaft can not be separated from the bearing, and meanwhile, the upper end of the connecting shaft is exposed in the cavity of the shell and can be connected with the output shaft.

Drawings

FIG. 1 is a schematic diagram of a gearbox with a grass-mowing head in an embodiment;

FIG. 2 is a schematic view of a joint with a cutting head mounted on a gearbox in one embodiment;

FIG. 3 is an exploded view of a gear box and quick-change coupling according to one embodiment;

FIG. 4 is a schematic view showing a structure of a fixing member on a quick-change connector according to an embodiment;

FIG. 5 is an exploded view of a quick-change connector according to an embodiment, which mainly shows the internal structure of the quick-change connector;

FIG. 6 is a schematic structural view of a positioning plate and a supporting portion of a quick-change connector according to an embodiment;

FIG. 7 is a schematic diagram of a positioning plate according to an embodiment;

FIG. 8 is a schematic view of the internal structure of the locking mechanism according to one embodiment;

FIG. 9 is a cross-sectional view of a locking mechanism in one embodiment.

Wherein: 1. a gear box; 11. an output shaft; 12. a skirt edge; 121. a locking groove; 13. a fixing member; 14. an embedding part; 131. a rod body; 132. an end head; 2. a quick-change joint; 21. a housing; 211. a cavity; 22. a first insertion groove; 23. a first sliding groove; 24. a positioning plate; 25. a second insertion groove; 26. a second sliding groove; 27. a protrusion; 28. a support part; 29. a bearing; 3. a functional head; 31. a connecting shaft; 32. grass cutting head; 33. cutting the irrigation head; 4. a locking mechanism; 41. a locking cavity; 42. a locking lever; 421. a lever body; 422. a displacement member; 423. a rod tail end; 43. an elastic member; 44. a cover body.

Detailed Description

The present invention will be further described in detail with reference to the drawings and the detailed description, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the detailed description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The first embodiment of the present invention relates to a mowing and mowing machine with a function head convenient and quick to replace, which is used for trimming lawns, gardens, shrubs and the like, wherein the mowing and mowing machine needs to use different function heads 3 when trimming different objects, as shown in fig. 1, 2 and 3, the mowing head 32 is assembled when trimming lawns, and the mowing head 33 is assembled when trimming shrubs. When other trimming demands are met, the functional head 3 can be other types of functional heads, and the functional heads are not limited to the cutting and irrigating head 33 and the grass cutting head 32, when the functional heads 3 are switched, the functional heads 3 mounted on the gear box 1 need to be detached and new functional heads 3 are mounted, and the detaching and mounting processes usually need tools such as a spanner, a screwdriver or an electric screwdriver, so that the detaching and mounting processes are very troublesome.

The grass cutting and irrigating machine in the embodiment can conveniently replace the functional head 3, so that a disassembling tool is not needed, and the disassembling method and the disassembling operation are convenient. As shown in fig. 2 and 3, the mowing and irrigating grass cutter in the present embodiment includes: a gear box 1, a quick-change connector 2, a functional head 3 and a locking mechanism 4. The functional head 3 is arranged on the quick-change connector 2, the locking mechanism 4 locks the quick-change connector 2 on the gear box 1, and the functional head 3 is connected with the output shaft 11 of the gear box 1 after the quick-change connector 2 is arranged on the gear box 1. When the functional head 3 is replaced, the quick-change connector 2 with a new functional head 3 is only required to be mounted on the gear box 1 by releasing the locking of the locking mechanism 4.

As shown in fig. 3, the quick-change connector 2 has an annular housing 21, a cavity 211 is formed in the middle of the annular housing 21, the functional head 3 has a connecting shaft 31, the connecting shaft 31 is located in the cavity 211 of the annular housing 21, and when the quick-change connector 2 is mounted on the gear box 1, an output shaft 11 of the gear box 1 enters the cavity 211 to be connected with the connecting shaft 31 of the functional head 3, so that the gear box 1 can drive the functional head 3 to rotate.

The bottom of gear box 1 forms shirt rim 12, offsets with the up end of annular casing 21, wherein wears to be equipped with mounting 13 on the shirt rim 12, and mounting 13 can be stud, as shown in fig. 3 through 5, and mounting 13 includes body of rod 131 and establishes the end 132 on body of rod 131 both ends, has seted up the slip joint groove along the axial on the terminal surface of annular casing 21, and the slip joint groove includes: a first insertion groove 22, and a first sliding groove 23 communicating with the first insertion groove 22. Wherein the first insertion groove 22 may be a circular groove, the first sliding groove 23 is a waist-shaped groove, and the inner diameter of the first insertion groove 22 is larger than the width of the first sliding groove 23. The end 132 of the fixing member 13 may be inserted into the first insertion groove 22 but not directly into the first sliding groove 23, and the width of the first sliding groove 23 is greater than or equal to the outer diameter of the rod 131, so that the rod 131 may slide in the first sliding groove 23. When the quick-change connector 2 is installed, firstly, the end head 132 of the fixing piece 13 is inserted into and passes through the first insertion groove 22, and the rod body 131 of the fixing piece 13 is positioned in the first insertion groove 22, and the position is a second position of the fixing piece 13 on the quick-change connector 2; next, the quick-change connector 2 is rotated, so that the rod body 131 of the fixing member 13 slides in the first sliding groove 23, and the fixing member 13 slides to the end of the first sliding groove 23, where the position is the first position of the fixing member 13 on the quick-change connector 2. When the fixing piece 13 is positioned at the first position, the output shaft 11 of the gear box 1 enters the cavity 211 of the annular shell 21 and is connected with the connecting shaft 31 in the cavity 211; then, when the fixing member 13 is located at the first position on the quick-change connector 2, the quick-change connector 2 is locked on the gear case 1 by the fixing mechanism, and the installation of the quick-change connector 2 and the functional head 3 on the gear case 1 is completed. When the quick-change connector 2 and the functional head 3 are integrated, the fixing piece 13 is switched between the first position and the second position when the functional head 3 is disassembled and assembled, locking and unlocking of the quick-change connector 2 on the gear box 1 can be realized, the sliding clamping groove is matched with the fixing piece 13 in structure, the fixing piece 13 can be mutually switched between the first position and the second position when the quick-change connector 2 and the gear box 1 relatively rotate, the position for rotating and switching the fixing piece 13 is convenient and easy, a disassembling tool is not needed, the disassembly and assembly steps of the functional head are convenient, and the disassembly and assembly time is saved. In this embodiment, three fixing members 13 are equidistantly disposed on the skirt 12, and at the same time, three first insertion grooves 22 and three first sliding grooves 23 are also formed on the upper end surface of the housing 21, and one fixing member 13 corresponds to one first insertion groove 22 and one first sliding groove 23. The three fixing pieces 13 are simultaneously clamped into the first sliding grooves 23, so that the clamping stability of the gear box 1 and the quick-change connector 2 is improved.

As shown in fig. 5, 6 and 7, the quick-change connector 2 further includes: a positioning plate 24 provided in the housing 21, the positioning plate 24 being provided with a second insertion groove 25 corresponding to the first insertion groove 22 and a second sliding groove 26 corresponding to the first sliding groove 23; the positioning plate 24 is formed with a protrusion 27 having a first height and a second height, the second insertion groove 25 is located at the first height, and the second sliding groove 26 extends from the first height to the second height along the screwing direction of the rod body 131, and the second height is lower than the first height. That is, in this embodiment, the extending direction of the second sliding groove 26 extends from top to bottom, when the end 132 of the fixing element 13 is inserted into the first inserting groove 22, the second inserting groove 25 is penetrated at the same time, the rod 131 of the fixing element 13 penetrates through the first inserting groove 22 and the second inserting groove 25 at the same time, and the end 132 is located below the second inserting groove 25, so that a certain gap is necessarily formed between the end 132 of the fixing element 13 and the positioning plate 24, rather than between the end 132 and the positioning plate 24, in order to ensure smooth sliding of the fixing element 13, and prevent the end 132 from entering the second inserting groove 25 and causing the fixing element 13 to be unable to slide in the first sliding groove 23 and the second sliding groove 26. When the rod body 131 slides to the end parts of the first sliding groove 23 and the second sliding groove 26, the rod body 131 is abutted against one ends of the first sliding groove 23 and the second sliding groove 26, and a certain gap is still reserved between the end head 132 and the positioning plate 24, so that a position along the axial direction of the rod body 131 is easy to appear between the quick-change connector 2 and the gear case 1. In the present embodiment, since the second sliding groove 26 extends from top to bottom, when the rod body 131 slides to the end position of the second sliding groove 26, i.e. the first position, the end 132 will abut against the protrusion 27 of the positioning plate 24, and during the sliding process of the fixing member 13, the protrusion 27 on the positioning plate 24 fills the gap between the end 132 and the positioning plate 24, so as to avoid the occurrence of axial movement of the fixing member 13 in the first position, which results in contact and cooperation between the output shaft 11 of the gearbox 1 and the connector of the functional head 3.

In addition, a supporting portion 28 is disposed in the housing 21, the supporting portion 28 is disposed at the bottom of the positioning plate 24, and a portion of the supporting portion 28 corresponding to the second insertion groove 25 and the second sliding groove 26 is hollowed out to form a sliding space for sliding the fixing member 13. The supporting portion 28 supports the positioning plate 24, and leaves a sliding space for sliding the end 132 of the fixing member 13, so that the stress intensity of the quick-connection end 132 is enhanced, and meanwhile, the production material is saved.

As shown in fig. 4, the quick-change connector 2 further includes: the bearing 29 is arranged on the inner ring of the shell 21, the connecting shaft 31 of the functional head 3 is arranged in the bearing 29, wherein the inner ring of the shell 21 is provided with a convex 27 with a fixed pattern, and the fixed pattern enables the bearing 29 to be in interference fit with the shell 21, so that the bearing 29 is tightly embedded into the inner ring of the shell 21. The connecting shaft 31 of the functional head 3 is a stepped shaft, a protruding ring is arranged at the upper end of the connecting shaft 31, the protruding ring is coaxial with the connecting shaft 31 and has an outer diameter larger than that of the connecting shaft 31, the protruding ring is arranged at the top of the bearing 29, so that the connecting shaft 31 cannot be separated from the bearing 29, and meanwhile, the upper end of the connecting shaft 31 is exposed in the cavity 211 of the shell 21 and can be connected with the output shaft 11. The connection mode between the connection shaft 31 and the output shaft 11 may be many, for example, by respectively arranging a male coupling and a female coupling on the connection shaft 31 and the output shaft 11, in this embodiment, the output shaft 11 is a spline shaft, a spline hole is formed on the connection shaft 31, and when the quick-change joint 2 is mounted on the gear box 1, the output shaft 11 is inserted into the spline hole of the connection shaft 31, so as to realize synchronous rotation of the connection shaft 31 and the output shaft 11.

It should be noted that, as shown in fig. 2, the gear case 1 protrudes downwards to form the embedded portion 14, when the quick-change connector 2 is mounted on the gear case 1, the embedded portion 14 enters the cavity 211 in the quick-change connector 2, the cavity 211 is filled, vibration between the gear case 1 and the quick-change connector 2 is avoided, a sealing ring can be sleeved on the embedded portion 14 to seal the quick-change connector 2, and dust or sundries are prevented from entering the cavity 211, so that the connection between the connecting shaft 31 and the output shaft 11 is prevented from being affected.

As is clear from the above, the engagement of the fixing member 13 and the housing 21 fixes the gear case 1 and the housing 21 in the axial direction of the gear case 1, and the fixing mechanism locks the gear case 1 in the radial direction of the gear case 1. The skirt 12 of the gear case 1 is provided with a locking groove 121 in the radial direction, and the locking mechanism 4 includes, with reference to fig. 2 and 8: the locking cavity 41 arranged on the shell 21, the locking rod 42 penetrating through the locking cavity 41 and the elastic piece 43 connected with the locking rod 42 are arranged, when the fixing piece 13 is located at the first position on the quick-change connector 2, the locking groove 121 is opposite to the locking rod 42, the elastic piece 43 pushes the locking rod 42 to be clamped into the locking groove 121 due to restoring force, the locking mechanism 4 locks the quick-change connector 2 and the gear box 1 in the radial direction, relative rotation between the quick-change connector 2 and the gear box 1 is prevented, axial locking between the quick-change connector 2 and the gear box 1 is realized through cooperation of the fixing piece 13 and the first inserting groove 22 and the first sliding groove 23 on the quick-change connector 2, and relative movement between the quick-change connector 2 and the gear box 1 is prevented, so that overall locking between the quick-change connector 2 and the gear box 1 is realized, and relative movement or rotation between the quick-change connector 2 and the gear box 1 is prevented.

Referring to fig. 8 and 9, the locking cavity 41 is hollow, the locking rod 42 penetrates through the locking cavity 41, and both ends of the locking rod 42 are located outside the locking cavity 41, and the elastic member 43 may be a spring or other elastic member 43, which is only exemplified by a spring in the present embodiment, and is not limited specifically. The lock lever 42 includes: the rod body 421 penetrating the locking cavity 41 and the displacement piece 422 arranged in the locking cavity 41, wherein the displacement piece 422 is connected with the rod body 421 and extends in the radial direction of the rod body 421, one end of the elastic piece 43 is abutted against the inner wall of the locking cavity 41, the other end of the elastic piece 43 is abutted against the displacement piece 422, and the elastic piece 43 applies a force towards the direction of the gear box 1 to the displacement piece 422 and the locking rod 42. When the fixing piece 13 is in the second position, the locking rod 42 abuts against the skirt 12 under the action of the elastic piece 43, when the fixing piece 13 rotates to the first position, the locking rod 42 is opposite to the locking groove 121, and the locking rod 42 enters the locking groove 121 under the pushing of the elastic piece 43 to complete the clamping connection, so that the gear box 1 is locked.

The locking mechanism 4 further includes: the cover body 44 covering the locking cavity 41, the cover body 44 is slidably connected with the locking cavity 41, one end of the rod body 421, which is far away from the gear box 1 and protrudes out of the locking cavity 41, is a rod tail end 423, the rod tail end 423 is clamped into the cover body 44, and when the cover body 44 is pulled in a direction away from the gear box 1, the locking rod 42 is driven to move in a direction away from the gear box 1, so that the locking rod 42 is pulled out of the locking groove 121. The lock mechanism 4 is unlocked from the gear case 1. The unlocking of the gear box 1 and the quick-change connector 2 can be realized by pulling the cover body 44, the operation is convenient and quick, and the replacement time of the functional head 3 is saved.

The functional head 3 and the quick-change connector 2 in the present embodiment are integrally provided, and when a cutting object needs to be replaced, the quick-change connector 2 with a new functional head 3 may be replaced on the gear case 1. For example, the quick-change connector 2 with the grass-cutting head 32 is installed on the gear box 1, the grass-cutting head 32 is replaced by the cutting head 33, the cover 44 of the hand-held locking mechanism 4 is pulled outwards, the locking rod 42 is pulled out of the locking groove 121 of the skirt 12 of the gear box 1, the rotation locking of the quick-change connector 2 and the gear box 1 is released, either the gear box 1 or the quick-change connector 2 is rotated, the fixing piece 13 is switched from the first position to the second position, the fixing piece 13 penetrates through the first inserting groove 22 and the second inserting groove 25 when in the second position, at the moment, the fixing piece 13 can be pulled out from the first inserting groove 22 and the second inserting groove 25, and meanwhile, the output shaft 11 is contacted with the spline of the connecting shaft 31 in a matched mode, so that the grass-cutting head 32 and the quick-change connector 2 are detached on the gear box 1. The quick-change connector 2 with the cutting and irrigating head 33 is installed on the gear box 1, the fixing piece 13 is inserted into and penetrates through the first insertion groove 22 of the quick-change connector 2, the fixing piece 13 is rotated to the end part of the first sliding groove 23, the fixing piece 13 is positioned at the first position, the locking rod 42 is aligned with the locking groove 121 at the moment, and under the elastic force of the elastic piece 43, the locking rod 42 automatically enters the locking groove 121 to complete locking, so that the installation of the cutting and irrigating head 33 and the quick-change connector 2 on the gear box 1 is realized.

From the above, the grass cutting and irrigating machine in the embodiment is quite convenient to operate when the functional head is replaced, does not need any disassembly tool, is simple and quick to operate, and can greatly improve the use experience of a user during use.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. The utility model provides a convenient quick replacement function head cut irrigate grass trimmer which characterized in that includes:

the gear box (1), the gear box (1) is provided with an output shaft (11), and a fixing piece (13) is arranged on the gear box (1);

the quick-change connector (2), the fixing piece (13) is provided with a first position and a second position on the quick-change connector (2), when the fixing piece (13) is positioned at the first position, the fixing piece (13) is clamped into the quick-change connector (2), and when the fixing piece (13) is positioned at the second position, the fixing piece (13) can be separated from the quick-change connector (2); the fixture enables rotation of the gearbox (1) relative to the quick-change coupling (2) by going from a first position to a second position, or vice versa, the quick-change coupling (2) further comprising: casing (21), establish locating plate (24) in casing (21), sliding joint groove has been seted up along circumference on quick change joint (2), sliding joint groove includes: the first inserting groove (22) for inserting the end head (132) of the fixing piece (13), the first sliding groove (23) for sliding the rod body (131) of the fixing piece (13), the first inserting groove (22) and the first sliding groove (23) are formed in the shell (21), and the positioning plate (24) is formed with: a second insertion groove (25) corresponding to the first insertion groove (22) and a second sliding groove (26) corresponding to the first sliding groove (23), wherein the shell (21) is provided with a supporting part (28), the supporting part (28) is arranged at the bottom of the positioning plate (24), and the supporting part (28) is hollowed out with the second insertion groove (25) and the second sliding groove (26) to form a sliding space for the fixing piece (13) to slide; the locking mechanism (4) is arranged on the quick-change connector (2), and when the fixing piece (13) is positioned at the first position, the locking mechanism (4) realizes the locking of the quick-change connector (2) and the gear box (1) in the radial direction;

the functional head (3) is fixed on the quick-change connector (2) and is provided with a connecting shaft (31), when the fixing piece (13) is positioned at the first position, the output shaft (11) is connected with the connecting shaft (31), and the output shaft (11) drives the functional head (3) to rotate; when the fixing member (13) is in the second position, the output shaft (11) is disconnected from the connecting shaft (31).

2. A harvester according to claim 1, characterized in that the fixing member (13) is snapped in from one end of the sliding snap groove and rotated along the sliding snap groove to the other end; the fixing piece (13) is located at the first position when being clamped into the sliding clamping groove, and the fixing piece (13) is located at the second position when being slid to the end portion of the sliding clamping groove.

3. The machine according to claim 2, characterized in that said fixed member (13) has said shank (131) and said head (132) connected to said shank (131), said first insertion slot (22) being in communication with said first sliding slot (23), said fixed member (13) being in a second position when said head (132) is inserted into said first insertion slot (22); when the rod body (131) is screwed into the end part of the first sliding groove (23), the fixing piece (13) is located at the first position.

4. A harvesting, irrigating and mowing machine according to claim 3, characterized in that a protrusion (27) is formed on the positioning plate (24), so that the positioning plate (24) has a first height and a second height, the second insertion groove (25) is provided on the first height, the second sliding groove (26) extends from the first height to the second height along the screwing direction of the rod body (131), and the second height is lower than the first height.

5. A harvester according to any one of claims 1-4, characterized in that the gearbox (1) is provided with a locking groove (121) in a radial direction, the locking mechanism (4) comprising:

a locking cavity (41) arranged on the quick-change connector (2);

a locking rod (42) penetrating the locking cavity (41), wherein when the fixing piece (13) is positioned at the first position, the locking rod (42) is opposite to the locking groove (121);

an elastic member (43) provided in the lock chamber (41) and applying an elastic force to the lock lever (42) inserted into the lock groove (121).

6. The mowing and mowing machine according to claim 5, wherein the locking bar (42) comprises: the rod body (421) penetrates through the locking cavity (41), and the displacement piece (422) is arranged in the locking cavity (41) and connected with the rod body (421), and the displacement piece (422) is propped against the elastic piece (43).

7. The mowing and mowing machine according to claim 6, wherein the locking mechanism (4) further comprises: cover the cover body (44) of locking chamber (41), the cover body (44) with locking chamber (41) sliding connection, locking lever (42) are keeping away from one side of gear box (1) has pole tail end (423), pole tail end (423) card is gone into cover body (44), cover body (44) are keeping away from when gear box (1) direction slides will pole body (421) follow in locking groove (121).

8. The mowing and mowing machine according to claim 4, characterized in that the quick-change coupling (2) further comprises: and a bearing (29) fixed on the inner ring of the shell (21), wherein the connecting shaft (31) of the functional head (3) is arranged in the bearing (29).

9. The machine according to claim 8, characterized in that the connecting shaft (31) is provided with a protruding ring, which is mounted on top of the bearing (29).