A grass comb with replaceable blades

Abstract

The application relates to a grass combing machine facilitating replacement of blades, and belongs to the technical field of grass combing machines. The grass combing machine comprises a mounting shell, a driving mechanism arranged on the mounting shell and a cutting mechanism in transmission connection with the driving mechanism, the cutting mechanism comprises a cutting support, two groups of cutting blades slidably arranged on the cutting support, a sliding assembly for driving the cutting blades to slide and a connecting assembly for connecting the cutting blades and the driving mechanism, the cutting support is provided with a first sliding channel and a second sliding channel for mounting the two groups of cutting blades respectively, the first sliding channel and the second sliding channel are arranged in a staggered mode, the cutting support is provided with a driving groove at the connection position of the first sliding channel and the second sliding channel, and the connecting assembly is arranged on the opposite sides of the driving groove. The application has the effect of improving the blade switching efficiency of the grass combing machine.

Description

Technical Field

[0001] This application relates to the field of grass combing machine technology, and in particular to a grass combing machine with easily replaceable blades. Background Technology

[0002] With social progress, people's demands for the quality of their living environment are constantly increasing, and the green area of ​​roadsides and parks continues to expand. In order to maintain the best condition of lawns, timely maintenance and cleaning are necessary. As a highly efficient garden tool, lawn deers are easy to operate and can effectively complete the grooming and cleaning of grasses and shrubs.

[0003] Existing hay combs generally include a drive mechanism, a working mechanism, an operating mechanism, and a safety mechanism. The drive mechanism includes an engine and a transmission device, while the working mechanism includes cutting blades connected to the transmission device and a hay collection box for collecting hay clippings. In use, the engine is started, driving the cutting blades to rotate, and the resulting hay clippings are drawn into the hay collection box.

[0004] The aforementioned lawn comb also has drawbacks, such as the need to change the cutting blades according to different lawn conditions during use, and the current disassembly requires manual use of tools such as screwdrivers, making disassembly and replacement rather cumbersome. Summary of the Invention

[0005] In order to improve the blade switching efficiency of a grass comber, this application provides a grass comber with easy blade replacement.

[0006] The grass comber provided in this application, which facilitates blade replacement, adopts the following technical solution: A grass comber with easy-to-change blades includes a mounting housing, a drive mechanism disposed on the mounting housing, and a cutting mechanism that is drively connected to the drive mechanism. The cutting mechanism includes a cutting bracket, two sets of cutting blades slidably mounted on the cutting bracket, a sliding assembly for driving the cutting blades to slide, and a connecting assembly for connecting the cutting blades and the drive mechanism. The cutting bracket is provided with a first slide rail and a second slide rail for mounting the two sets of cutting blades respectively. The first slide rail and the second slide rail are staggered. The cutting bracket is provided with a drive groove at the connection between the first slide rail and the second slide rail. The connecting assembly is disposed on opposite sides of the drive groove.

[0007] By adopting the above technical solution, the cutting blade is slidably installed on the cutting bracket, and a sliding component is set to drive its sliding. At the same time, the cutting bracket is provided with staggered first and second sliding tracks and a drive groove. According to the lawn mowing requirements, the required cutting blade is moved to the drive groove through the sliding component. Connecting components are set on opposite sides of the drive groove to achieve a fixed connection between the cutting blade and the drive structure. The above makes the replacement of the cutting blade more convenient and avoids the tedious disassembly and replacement by manually using tools such as screwdrivers.

[0008] Optionally, the cutting blade includes a cutting shaft, cutting discs spaced apart on the cutting shaft, and a connecting end disposed at the end of the cutting shaft. The inner walls of the first slide and the second slide are both provided with limiting grooves for arranging the connecting end.

[0009] By adopting the above technical solution, the structural composition of the cutting blade is specifically disclosed. The connecting end has a limiting groove, which makes the cutting blade more stable when sliding in the first and second slides of the cutting bracket, reducing the probability of the cutting blade deviating during the sliding process, thereby improving the smoothness of cutting blade replacement.

[0010] Optionally, the sliding assembly includes a sliding drive, an output screw connected to the output shaft of the sliding drive, a sliding drive block threaded onto the output screw, and a connector disposed on the sliding drive block. The connector includes a connector drive and a connector rod disposed on the output shaft of the connector drive, and the connecting end has a connector slot for the connector rod to be inserted.

[0011] By adopting the above technical solution, the sliding component can be used to realize the sliding of the cutting blade on the cutting bracket. The position of the cutting blade can be precisely controlled by the cooperation of the output screw and the sliding drive block. At the same time, the sliding drive and the cutting blade can be easily connected by inserting the plug rod into the plug slot, which can realize the self-sliding of the cutting blade.

[0012] Optionally, the cutting bracket is provided with two sets of sliding components, which are located on the outer side walls of the first and second slides respectively. The cutting bracket is provided with detection sensors on both sides of the drive groove to detect whether the insertion groove corresponds to the insertion rod.

[0013] By adopting the above technical solution and using detection sensors to monitor the correspondence between the insertion slot and the insertion rod, it can be ensured that the sliding assembly drives the cutting blade to slide accurately to the appropriate position, thereby improving the accuracy and convenience of cutting blade replacement.

[0014] Optionally, both the first slide and the second slide are provided with limiting components at the ends away from the drive groove. The limiting component includes a limiting box, a limiting spring disposed in the limiting box, and a limiting block connected to the limiting spring. The limiting block is provided with a driving inclined surface on the side facing the drive groove.

[0015] By adopting the above technical solution, when installing and replacing the cutting blade, the limiting spring and limiting block of the limiting component, together with the driving inclined surface of the limiting block, enable the cutting blade to be installed and positioned more smoothly in the first and second slides, thereby improving the stability of the cutting blade.

[0016] Optionally, the limiting member is rotatably mounted on the cutting bracket, and both the first slide and the second slide have rotation clearance grooves for the limiting member to rotate. The cutting bracket is provided with a rotation drive member for driving the two sets of limiting members to rotate.

[0017] By adopting the above technical solution, the limiting component can rotate in the rotation relief groove under the drive of the rotation drive component, flexibly adjusting the position of the limiting component. When the cutting blade is replaced, it automatically slides down into the drive groove, which facilitates the blade replacement operation and improves the replacement efficiency.

[0018] Optionally, the connecting component includes a first connector disposed at one end of the drive groove, a second connector disposed at the other end of the drive groove, and a push rod for pushing the first connector; The first connector includes a connecting housing disposed on the mounting housing, a rotary bearing disposed on the connecting housing, and a first connecting rod. The first connecting rod includes a pushing part and a connecting part. The connecting part has a first positioning groove for arranging the connecting ends. A positioning seat for arranging another set of connecting ends is rotatably mounted on the mounting housing.

[0019] By adopting the above technical solution, the first and second connecting parts of the connecting assembly cooperate, and the push rod pushes the first connecting part, the connection between the cutting blade and the drive mechanism can be conveniently realized. The first positioning groove and the positioning seat can position the connecting end of the cutting blade, thereby making the installation of the cutting blade more stable.

[0020] Optionally, a transmission rod is slidably mounted inside the cutting shaft. The connection end near the first connector is the first end, and the connection end near the second connector is the second end. The first end has a first through hole for one end of the transmission rod to be arranged. The other end of the transmission rod and the second end are fixedly connected. The second connector has a plug hole for the second end to be inserted.

[0021] By adopting the above technical solution, when the cutting blade slides into the drive groove, the push rod pushes the push part, causing the transmission rod to move toward the drive mechanism. The second end and the second connector are inserted and engaged, thereby realizing the connection between the cutting blade and the drive mechanism.

[0022] In summary, this application includes at least one of the following beneficial technical effects: The cutting blade is slidably mounted on the cutting bracket. The cutting blade is driven to slide by the sliding component, which makes it easy to replace the cutting blade and avoids the tedious disassembly of traditional manual tools such as screwdrivers. The cutting bracket is equipped with staggered first and second slides, and a drive groove is provided at the connection point. Together with the connecting components, it can achieve stable installation and transmission connection of the cutting blade. The connecting components include a first connector, a second connector, and a push rod, which can effectively connect the cutting blades to the drive mechanism, ensuring power transmission and completing the combing work. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0024] Figure 2 This is a schematic diagram of the drive mechanism and cutting blade according to an embodiment of this application.

[0025] Figure 3 This is a cross-sectional schematic diagram of the cutting mechanism according to an embodiment of this application.

[0026] Figure 4 This is a schematic diagram of the outer side of the cutting bracket according to an embodiment of this application.

[0027] Figure 5 This is a cross-sectional schematic diagram of the guide structure according to an embodiment of this application.

[0028] Figure 6 This is a cross-sectional schematic diagram of the limiting member according to an embodiment of this application.

[0029] Figure 7 This is a schematic diagram of the structure of the first connector in an embodiment of this application.

[0030] Figure 8 This is a schematic diagram of the structure of the second connector in an embodiment of this application.

[0031] Explanation of reference numerals in the attached drawings: 1. Mounting housing; 11. Drive wheel; 12. Handle; 13. Positioning seat; 2. Drive mechanism; 21. Drive source; 22. Transmission structure; 3. Cutting mechanism; 31. Cutting bracket; 311. First slide rail; 3111. Limiting slide groove; 3112. Guide slide ridge; 3113. Mounting groove; 312. Second slide rail; 313. Drive groove; 314. Blade clearance groove; 315. Sliding strip hole; 316. Limiting component; 3161. Limiting box; 3162. Limiting spring; 3163. Limiting block; 3164. Drive inclined surface; 317. Rotation drive component; 318. Rotating seat; 319. Erection plate; 32. Cutting blade; 321. Cutting shaft; 3211. Insertion groove; 322. Cutting blade; 323. Connecting end; 3231. Guide groove; 324. Transmission rod; 33. Sliding assembly; 331. Sliding drive component; 332. Output screw; 333. Sliding drive block; 334. Connector; 3341. Connecting drive component; 3342. Connecting rod; 34. Connecting assembly; 341. First connector; 3411. Connecting housing; 3412. Rotary bearing; 3413. First connecting rod; 34131. Pushing part; 34132. Connecting part; 34133. Positioning groove; 34134. Pushing inclined surface; 34135. First through hole; 342. Second connector; 3421. Second connecting rod; 3422. Connecting hole; 343. Push rod; 35. Detection sensor. Detailed Implementation

[0032] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Since the embodiments disclosed in this invention can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0033] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0034] This application discloses a grass comber with easily replaceable blades.

[0035] Reference Figure 1 and Figure 2A grass comber with easily replaceable blades includes a mounting housing 1, a drive mechanism 2, and a cutting mechanism 3. The mounting housing 1 serves as the mounting base for mounting the drive mechanism 2 and the cutting mechanism 3. The drive mechanism 2 includes a drive source 21 and a transmission structure 22 connected to the output shaft of the drive source 21. The drive source 21 can be an electric motor or a gasoline engine, as is common in the art. The transmission structure 22 is a gear and belt drive, with the drive gear of the drive source 21 and the drive gear of the transmission structure 22 coaxially fixed. The cutting mechanism 3 is fixed to the driven gear of the transmission structure 22. To facilitate movement of the mounting housing 1, the bottom of the mounting housing 1 has two sets of drive wheels 11 for movement, and the top of the mounting housing 1 has a handle 12 for the operator to grip. A control button for starting the drive source 21 is mounted on the handle 12.

[0036] Reference Figure 1 and Figure 3 The cutting mechanism 3 includes a cutting bracket 31, two sets of cutting blades 32 slidably mounted on the cutting bracket 31, a sliding assembly 33 for driving the cutting blades 32 to slide, and a connecting assembly 34 for connecting the cutting blades 32 and the transmission structure 22. The cutting bracket 31 is fixed to the mounting housing 1 by bolts or welding. The front side of the mounting housing 1 has a mounting through hole for mounting the cutting bracket 31, and the top outer edge of the cutting bracket 31 has an erection plate 319 that overlaps the opening of the mounting through hole.

[0037] The cutting bracket 31 is an inverted equilateral triangle frame. The two adjacent sides inside it have a first slide 311 and a second slide 312 respectively. The first slide 311 and the second slide 312 are both arranged at an inclination along the height direction. The cutting bracket 31 is provided with a drive groove 313 for arranging the cutting blade 32 at the bottom connection of the first slide 311 and the second slide 312. The axis of the drive groove 313 is arranged coaxially with the driven gear. The connecting component 34 is provided at the end of the drive groove 313.

[0038] Combination Figure 2 and Figure 4 Two sets of cutting blades 32 are slidably arranged in the first slide rail 311 and the second slide rail 312, respectively. Each cutting blade 32 includes a cutting shaft 321, cutting pieces 322 evenly spaced along the axial direction of the cutting shaft 321, and a connecting end 323 disposed at the end of the cutting shaft 321. Both ends of the inner walls of the first slide rail 311 and the second slide rail 312 are provided with limiting grooves 3111 adapted to the connecting end 323, and blade clearance grooves 314 arranged on the inner sidewalls to accommodate the cutting blades 32.

[0039] Two sets of sliding components 33 are provided on the cutting bracket 31. The sliding components 33 are used to realize the tilting and sliding of the cutting blade 32. Different blades are controlled to slide into the drive groove 313 according to the trimming requirements, and the cutting blade 32 is connected to the drive mechanism 2 through the connecting component 34. The sliding component 33 includes a sliding drive 331, an output screw 332 connected to the output shaft of the sliding drive 331, a sliding drive block 333 threadedly installed on the output screw 332, and a connector 334 disposed on the sliding drive block 333.

[0040] The sliding drive component 331 is a miniature motor, with its output shaft and output screw 332 coaxially fixed. The sliding drive block 333 and the output screw 332 are threadedly engaged, and the tilt angle of the output screw 332 is consistent with the tilt angle of the first slide rail 311. The outer side of the cutting bracket 31 has a limiting slide rail to restrict the rotation of the sliding drive block 333, so that the sliding drive block 333 can slide down along the tilt direction of the first slide rail 311. The connector 334 includes a connector drive component 3341 mounted on the sliding drive block 333 and a connector rod 3342 disposed at the output end of the connector drive component 3341.

[0041] The side wall of the cutting shaft 321 has insertion slots 3211 for inserting the insertion rod 3342. The insertion slots 3211 are spaced circumferentially along the axis of the cutting shaft 321. In this application, the cutting shaft 321 has two sets of symmetrically arranged insertion slots 3211. The cutting bracket 31 has sliding slots 315 corresponding to the insertion slots 3211. The insertion drive 3341 is a prior art push-pull electromagnet, which is connected to the power supply of the drive source 21. The insertion rod 3342 and the armature of the insertion drive 3341 are fixedly connected, and the sliding of the armature is controlled by the connection of the power supply. The cutting bracket 31 is also provided with a detection sensor 35 in the first slide rail 311 and the second slide rail 312. The detection sensor 35 detects whether the insertion slot 3211 corresponds to the sliding slot 315. The detection sensor 35 can be a photoelectric sensor. If the insertion slot 3211 and the sliding bar hole 315 correspond, the insertion drive 3341 is directly energized and the insertion rod 3342 is inserted into the insertion slot 3211; if the insertion slot 3211 and the sliding bar hole 315 do not correspond, the drive mechanism 2 drives the cutting blade 32 to rotate until the insertion slot 3211 and the sliding bar hole 315 correspond.

[0042] Reference Figure 5 and Figure 6 The first slide rail 311 and the second slide rail 312 are also provided with guide structures at both ends away from the sliding strip hole 315. The guide structure includes a guide slide rib 3112 provided in the limiting slide groove 3111 and a guide slide groove 3231 provided in the side wall of the connecting end 323. The guide slide groove 3231 is an annular groove evenly opened on the outer edge of the connecting end 323.

[0043] The first slide rail 311 and the second slide rail 312 are further provided with limiting members 316 at the ends away from the drive groove 313. The limiting members 316 can ensure that the cutting blade 32 is always at the top of the slide rail, reducing the probability of the cutting blade 32 sliding down. The limiting member 316 includes a limiting box 3161, a limiting spring 3162 disposed in the limiting box 3161, and a limiting block 3163 connected to the limiting spring 3162.

[0044] The cutting bracket 31 has a mounting groove 3113 for sliding the limiting box 3161, and the mounting groove 3113 is formed in the side wall of the limiting slide groove 3111. The limiting box 3161 has a mounting chamber for arranging the limiting spring 3162 and the limiting block 3163. The two ends of the limiting spring 3162 are respectively fixed to the bottom wall of the mounting chamber and the limiting block 3163. The limiting block 3163 also has a driving inclined surface 3164 on the side facing the driving groove 313. By setting the driving inclined surface 3164, when the sliding assembly 33 drives the cutting blade 32 to move along the first slide 311 or the second slide 312, the connecting end 323 abuts against the driving inclined surface 3164, causing the limiting block 3163 to slide as a whole into the mounting cavity. When the connecting end 323 moves to the top of the limiting block 3163, the limiting block 3163 resets under the action of the connecting spring, thereby providing support for the connecting end 323.

[0045] To enable the cutting blade 32 to automatically slide into the drive groove 313, a rotation drive 317 is provided on the outer side of the cutting bracket 31 to release the support of the limiting member 316 on the cutting blade 32. The limiting box 3161 is rotatably mounted on the cutting bracket 31. The limiting box 3161 has a rotating shaft on both side walls outside the limiting slide groove 3111. The cutting bracket 31 has a rotating seat 318 for arranging the rotating shaft. The cutting bracket 31 has a rotation clearance groove in the limiting slide groove 3111 for the limiting box 3161 to rotate, so that after the limiting box 3161 rotates to a vertical position, the limiting block 3163 disengages from the drive groove 313, ensuring that the cutting blade 32 can automatically fall along the slide. The rotation drive 317 is a rotary motor, and its output shaft and the rotating shaft are connected by gear transmission.

[0046] Reference Figure 7 and Figure 8 The connecting assembly 34 is used to realize the transmission connection between the cutting blade 32 and the drive mechanism 2. The connecting assembly 34 includes a first connecting member 341, a second connecting member 342, and a push rod 343. The first connecting member 341 includes a connecting housing 3411 disposed on the mounting housing 1, a rotary bearing 3412 mounted on the connecting housing 3411, and a first connecting rod 3413.

[0047] The first connecting rod 3413 includes a pushing part 34131 and a connecting part 34132. The connecting part 34132 has a positioning groove 34133 for the connecting end 323 to slide down. A rotary bearing 3412 is sleeved on the outside of the connecting part 34132. The pushing part 34131 has a pushing inclined surface 34134 for the pushing rod 343 to push. The pushing part 34131 is also sleeved with a reset elastic element for driving it to reset. The pushing rod 343 is slidably mounted on the mounting housing 1 along the height direction. The pushing rod 343 slides downward, and its end abuts against the pushing inclined surface 34134, driving the entire pushing part 34131 to move toward the drive mechanism 2.

[0048] A transmission rod 324 is slidably mounted inside the cutting shaft 321. The connecting end 323 near the first connecting member 341 is defined as the first end, and the connecting end 323 near the second connecting member 342 is defined as the second end. The first end has a first through hole 34135 through which one end of the transmission rod 324 passes. The first through hole 34135 and the connecting part 34132 are inserted into each other, allowing the first connecting rod 3413 to push the transmission rod 324. The other end of the transmission rod 324 is fixedly connected to the second end, and the two are rotatably engaged, so that rotation of the connecting end 323 will not cause the transmission rod 324 to rotate.

[0049] The overall structure of the second connector 342 is the same as that of the first connector 341, and it has a second connecting rod 3421 that is coaxially fixed with the drive mechanism 2. The end of the second connecting rod 3421 is provided with a plug hole 3422 for inserting a second end, and the cross-section of the second end is rectangular.

[0050] The implementation principle of a lawn comber with easy blade replacement according to the embodiment of this application is as follows: Select the required cutting blade 32 according to the weed condition of the lawn, start the rotation drive component 317 of the corresponding slide, so that the support of the limiting block 3163 on the connecting end 323 is released, and the cutting blade 32 automatically falls into the drive groove 313 under the action of the guide structure, so that the first end and the second end are respectively arranged in the positioning groove 34133 of the first connecting rod 3413 and the second connecting rod 3421. Press the push rod 343, so that the first connecting rod 3413 moves towards the transmission rod 324, the first connecting rod 3413 and the first end are inserted and engaged, and the second connecting rod 3421 and the second end are inserted and engaged. At this time, the drive mechanism 2 can drive the cutting blade 32 to rotate. When the blade needs to be replaced, the push rod 343 is released from its limit on the first connecting rod 3413, so that the first connecting rod 3413 and the transmission rod 324 are reset. Then the sliding assembly 33 is activated to move the cutting blade 32 upward along the first slide rail 311 or the second slide rail 312. The limiting member 316 provides automatic support for the connecting end 323.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A grass comber with easily replaceable blades, comprising a mounting housing (1), a drive mechanism (2) disposed in the mounting housing (1), and a cutting mechanism (3) drively connected to the drive mechanism (2), characterized in that, The cutting mechanism (3) includes a cutting bracket (31), two sets of cutting blades (32) slidably mounted on the cutting bracket (31), a sliding assembly (33) for driving the cutting blades (32) to slide, and a connecting assembly (34) for connecting the cutting blades (32) and the driving mechanism (2). The cutting bracket (31) is provided with a first slide rail (311) and a second slide rail (312) for the two sets of cutting blades (32) to be installed respectively. The first slide rail (311) and the second slide rail (312) are staggered. The cutting bracket (31) is provided with a driving groove (313) at the connection between the first slide rail (311) and the second slide rail (312). The connecting assembly (34) is provided on opposite sides of the driving groove (313). The cutting blade (32) includes a cutting shaft (321), cutting discs (322) spaced apart on the cutting shaft (321), and a connecting end (323) disposed at the end of the cutting shaft (321). The inner walls of the first slide (311) and the second slide (312) are provided with limiting grooves (3111) for the connecting end (323) to be arranged. The sliding assembly (33) includes a sliding drive (331), an output screw (332) connected to the output shaft of the sliding drive (331), a sliding drive block (333) threaded onto the output screw (332), and a connector (334) disposed on the sliding drive block (333). The connector (334) includes a connector drive (3341) and a connector rod (3342) disposed on the output shaft of the connector drive (3341). The connecting end (323) has a connector slot (3211) for the connector rod (3342) to be inserted.

2. A grass comber with easily replaceable blades according to claim 1, characterized in that, The cutting bracket (31) is provided with two sets of sliding components (33). The two sets of sliding components (33) are located on the outer side walls of the first slide (311) and the second slide (312) respectively. The cutting bracket (31) is provided with detection sensors (35) on both sides of the drive groove (313) to detect the insertion groove (3211). The detection sensors (35) detect whether the insertion groove (3211) corresponds to the insertion rod (3342).

3. A grass comber with easily replaceable blades according to claim 1, characterized in that, The first slide (311) and the second slide (312) are both provided with limiting members (316) at the ends away from the drive groove (313). The limiting member (316) includes a limiting box (3161), a limiting spring (3162) disposed in the limiting box (3161), and a limiting block (3163) connected to the limiting spring (3162). The limiting block (3163) is provided with a driving inclined surface (3164) on the side facing the drive groove (313).

4. A grass comber with easily replaceable blades according to claim 3, characterized in that, The limiting member (316) is rotatably mounted on the cutting bracket (31). The first slide (311) and the second slide (312) both have rotation clearance grooves for the limiting member (316) to rotate. The cutting bracket (31) is provided with a rotation drive member (317) for driving the two sets of limiting members (316) to rotate.

5. A grass comber with easily replaceable blades according to claim 1, characterized in that, The connecting assembly (34) includes a first connector (341) disposed at one end of the drive groove (313), a second connector (342) disposed at the other end of the drive groove (313), and a push rod (343) for pushing the first connector (341). The first connector (341) includes a connecting housing (3411) disposed on the mounting housing (1), a rotary bearing (3412) disposed on the connecting housing (3411), and a first connecting rod (3413). The first connecting rod (3413) includes a pushing part (34131) and a connecting part (34132). The connecting part (34132) has a first positioning groove for arranging the connecting end (323). A positioning seat (13) for arranging another set of connecting ends (323) is rotatably mounted on the mounting housing (1).

6. A grass comber with easily replaceable blades according to claim 5, characterized in that, A transmission rod (324) is slidably installed inside the cutting shaft (321). The connecting end (323) near the first connector (341) is the first end, and the connecting end (323) near the second connector (342) is the second end. The first end has a first through hole (34135) for one end of the transmission rod (324) to be arranged. The other end of the transmission rod (324) and the second end are fixedly connected. The second connector (342) has a plug hole (3422) for the second end to be inserted.

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