CN214545672U - Combined expansion type grass mowing module - Google Patents

Abstract

The utility model provides a combined expansion type grass mowing module, which comprises a bow-supporting type main grass mowing module, a plurality of bow-supporting type side-connected grass mowing modules and/or bow-supporting type side-connected avoiding grass mowing modules, wherein the bow-supporting type side-connected grass mowing modules can be detachably inserted at one side or two sides of the bow-supporting type main grass mowing module, the bow-supporting type side-connected grass mowing modules can be connected end to end, and the bow-supporting type side-connected avoiding grass mowing modules can be detachably inserted on the bow-supporting type main grass mowing module and/or the bow-supporting type side-connected grass mowing module; also provided with a rope winding and unwinding device, a steel wire rope and a pulley component. The utility model discloses can select the best module combination according to the operation environment, can adapt to the field of multiple line spacing, the operating efficiency is high, beat careless height-adjustable, simple structure, be convenient for pull and intelligent control.

Description

Combined expansion type grass mowing module

Technical Field

The utility model relates to a towed machine field of beating grass particularly, relates to a module of beating grass of combination extension formula.

Background

Among the prior art, towed grass cutter does not possess the modular combination extended functionality, and is relatively poor to the different row spacing adaptability of crops, and the operating efficiency is difficult for promoting, and the effect of beating the grass head and pasting the ground is not good.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, provide a module is beaten to combination extension formula.

In order to realize the above-mentioned purpose, the embodiment of the utility model provides a modular extension formula module of beating grass is provided, it includes that a bow holds in the palm formula owner and beats the grass module, a plurality of bow holds in the palm formula side and connects the module of beating grass and/or bow and hold in the palm the formula side and dodge the module of beating grass, the bow holds in the palm formula side and beats the grass module and can dismantle the grafting and hold in the palm one side or both sides that the module of beating grass was main at the bow, but bow holds in the palm formula side and beat the head and the tail connection between the grass module, bow holds in the palm the formula side and connects to dodge the module of beating grass and can dismantle the grafting and beat the grass module at bow and hold in the palm formula main module of beating grass and/or bow and hold in the palm the formula side and beat the grass module.

Preferably, bow holds in the palm formula owner and beats the grass module and includes bow and hold in the palm formula head and the body frame body of beating grass, the body frame body is equipped with at least one body frame ear seat joint, trailer joint, side jack and spring locating pin on the body frame body and constitutes, and wherein, the trailer joint is established at the middle part of body frame body, and the both ends at the body frame body are established to the side jack, and spring locating pin establishes on the body frame ear seat joint and on the body frame body of side jack place end, bow holds in the palm formula head of beating grass and articulates through the hub lug seat on it and the body frame ear seat joint on the body frame body.

Preferably, bow holds in the palm formula side module of beating grass includes bow and holds in the palm formula head of beating grass and side connection support body, the side connection support body is equipped with a side bearer ear seat joint, side plug, side jack and spring locating pin on the side bearer body and constitutes, and wherein, the one end at the side bearer body is established to the side plug, and the other end at the side bearer body is established to the side jack, and spring locating pin establishes on the side bearer ear seat joint and on the side bearer body of side jack place end, the bow holds in the palm formula head of beating grass and connects articulatedly through the hub lug on it with the side bearer ear seat joint on the side connection support body.

Preferably, the module of beating grass is dodged in bow formula side joint includes bow formula side joint support body, the electronic head of beating grass of straight connecting rod, spring locating pin, swing subassembly and the spring of beating grass, the electronic head of beating grass of straight connecting rod passes through spring locating pin to be connected on bow formula side joint support body, the swing middle part and the bow formula side joint support body of beating the subassembly of beating grass are connected, spring coupling is beaten the one end of subassembly and bow and is held in the palm between the formula side joint support body in the swing.

Preferably, the bow holds in the palm formula side connection support body and beats the grass subassembly connecting axle including the hub connection side plug, installation pole, spacing fender protruding, bow support, spring joint and swing, the one end of installation pole is articulated with the one end of hub connection side plug, and the other end is equipped with communicating vertical hole and horizontal hole, and the horizontal hole is used for being connected with spring locating pin, and the lower extreme in vertical hole is beaten the grass subassembly connecting axle with the swing and is beaten the one end of grass subassembly connecting axle and bow support and be connected to the swing is beaten the grass subassembly connecting axle concentric with vertical hole, and the lower part that the bow held in the palm is perpendicular with the installation pole, spacing fender is protruding to be established the lower extreme at the installation pole, spring joint connects spacing fender is protruding.

Preferably, the swing grass mowing assembly comprises an electric bent connecting rod grass mowing head and an avoiding contact rod, the electric bent connecting rod grass mowing head is formed by fixedly connecting a bent connecting rod with a hole on an electric motor of the electric grass mowing head, the electric bent connecting rod grass mowing head is respectively connected with a spring and the swing grass mowing assembly connecting shaft through the hole in the bent connecting rod, and the avoiding contact rod is fixedly connected to the bent connecting rod.

Preferably, the straight-connecting-rod electric grass mowing head is formed by fixedly connecting a straight connecting rod with a hole on a motor of the electric grass mowing head, and the straight-connecting-rod electric grass mowing head is connected with a vertical hole of an installation rod of the bow-support type side support body through the straight connecting rod.

Preferably, the bow-supporting type main grass mowing module is further provided with a rope winding and unwinding device, a steel wire rope and a pulley assembly, the rope winding and unwinding device and the pulley assembly are fixedly connected to the main frame body of the bow-supporting type main grass mowing module, the steel wire rope is guided by the pulley assembly, and two ends of the steel wire rope are respectively and fixedly connected to the rope winding and unwinding device and a rope joint of the bow-supporting type grass mowing head.

Preferably, the bow-support type side grass mowing module is further provided with a steel wire rope and a pulley assembly, the pulley assembly is fixedly connected to the side frame body of the bow-support type side grass mowing module, one end of the steel wire rope is fixedly connected to a rope joint of the bow-support type grass mowing head, and the other end of the steel wire rope penetrates through the pulley assembly to be connected with the rope winding and unwinding device.

Preferably, the rope winding and unwinding device comprises a motor, a reverse double-twist wheel and a twist wheel frame, wherein the reverse double-twist wheel is formed by meshing two groups of pulleys provided with teeth and holes through the teeth, one group of pulleys provided with the teeth and the holes are connected to the twist wheel frame through a shaft, the other group of pulleys provided with the teeth and the holes are fixedly connected with the motor shaft through a shaft hole of the pulleys, and one surface of the twist wheel frame is fixedly connected to a motor shell at the end of the motor shaft.

Owing to adopted above technical scheme, the utility model has the advantages of:

1. the utility model has the modularized combination expansion function, and can select the best module combination according to the operation environment, thereby not only having better adaptability, but also effectively improving the operation efficiency;

2. each grass mowing head of the utility model can adapt to the real-time relief of the landform along with the respective supporting bow support, and the grass mowing effect on the ground is better;

3. the utility model discloses no complicated transmission structure, simple reliable connect the power module of unmanned car through trailer articulate, wire and can realize the intelligent control of the operation of beating grass.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of an example 1 of a combined extended mowing module according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an example 1 of a bow-type main mowing module according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a main frame provided in an embodiment of the present invention;

fig. 4 is a schematic structural view of an example 1 of a bow-type grass mowing head according to an embodiment of the present invention;

fig. 5 is a schematic structural view of an example 2 of a bow-type grass mowing head according to an embodiment of the present invention;

fig. 6 is a schematic view of a spring positioning pin according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a bow-supporting side-connected avoidance grass mowing module according to an embodiment of the present invention;

FIG. 8 is a schematic view of the present invention taken along the line A of FIG. 7;

fig. 9 is a schematic view of a bracket body of a bow-type side joint according to an embodiment of the present invention;

FIG. 10 is a schematic top view of a swing mowing assembly according to an embodiment of the present invention;

FIG. 11 is a schematic side view of the electric grass-mowing head with straight connecting rods according to the embodiment of the present invention;

fig. 12 is a schematic structural diagram of an example 2 of a combined extended mowing module according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of an example 1 of a bow-type side-connected grass mowing module according to an embodiment of the present invention;

fig. 14 is a schematic top view of a side frame according to an embodiment of the present invention;

FIG. 15 is a schematic view of the side frame body B of FIG. 13 according to the present invention;

fig. 16 is a schematic structural diagram of an example 2 of a bow-supporting main mowing module according to an embodiment of the present invention;

fig. 17 is a schematic structural diagram of an example 2 of a bow-supporting type side-connected grass mowing module according to an embodiment of the present invention;

fig. 18 is a schematic view of a rope reel provided in an embodiment of the present invention;

fig. 19 is a schematic structural diagram of a pulley assembly according to an embodiment of the present invention;

fig. 20 is a schematic structural diagram of an example 3 of a combined extended mowing module according to an embodiment of the present invention;

fig. 21 is a schematic structural diagram of an example 4 of a combined extended mowing module according to an embodiment of the present invention.

In the figure: 1. an aperture; 2. a spring positioning pin; 3. a shaft; 4. a wire rope; 5. a side jack; 6. an electric grass cutting head; 7. bow-shaped supporting type grass mowing heads; 8. a main frame body; 9. side-connected frame bodies; 10. the bow-shaped support type side-connected avoidance grass mowing module; 20. a rope takeup and payoff device; 30. a sheave assembly; 40. teeth; 50. a wire; 71. the shaft is connected with the lug seat; 72. a rope joint; 81. a trailer hitch; 82. a main frame body; 83. a main frame ear seat joint; 91. a side plug; 92. a side frame body; 93. a side frame ear mount joint; 101. the bow-shaped side connects the frame body; 1011. a side plug is connected with the shaft; 1012. mounting a rod; 1013. a limiting block is convex; 1014. carrying out bow support; 1015. a spring joint; 1016. a connecting shaft of the swinging grass mowing assembly; 102. a straight connecting rod electric grass mowing head; 1021. a straight connecting rod; 103. swinging the mowing assembly; 1031. bending the connecting rod to drive the grass mowing head; 10311. bending the connecting rod; 1032. avoiding the feeler lever; 104. a spring; 201. an electric motor; 202. a reverse double-reel; 203. a winch frame; 301. a pulley yoke; 302. a pulley; 100. the bow-shaped support type main grass mowing module; 200. the bow-shaped supporting type side connects the grass mowing module.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated device or element must have a specific position, be constructed and operated in a specific orientation, and thus, should not be interpreted as a limitation of the present invention.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

Referring to fig. 1, 12, 21, the utility model discloses a modular extension formula module of beating grass, it includes that a bow holds in the palm formula owner and beats grass module 100, a plurality of bow holds in the palm formula side and connects module 200 and/or bow and hold in the palm formula side and dodge module 10 of beating grass, bow holds in the palm formula side and beats grass module 200 and can dismantle the grafting in bow holds in the palm one side or both sides that formula owner beat grass module 100, but bow holds in the palm formula side and beat between the grass module 200 end to end connection, bow holds in the palm formula side and connects to dodge module 10 of beating grass and can dismantle the grafting in bow holds in the palm formula owner and beat grass module 100 and/or bow and hold in the palm formula side and beat grass module 200.

The specific embodiments will now be described as follows:

one, refer to fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, the utility model discloses a bow holds in the palm formula owner and beats grass module 100 includes that the bow holds in the palm formula and beat grass head 7 and main frame body 8, main frame body 8 is equipped with at least one main frame ear seat joint 83, trailer joint 81, side jack 5 and spring locating pin 2 constitution on main frame body 82, wherein, trailer joint 81 establishes the middle part at main frame body 82, and side jack 5 establishes the both ends at main frame body 82, and spring locating pin 2 establishes on main frame ear seat joint 83 and on the main frame body 82 of side jack 5 place end, bow holds in the palm formula and beats grass head 7 and is connected the upper end constitution at electronic grass head 6 by the one end that the bow that is equipped with hub lug seat 71 holds in the palm formula, and beat grass head 7 and articulate through the main frame ear seat joint 83 on the main frame body 8 of hub lug seat 71 on it.

Secondly, referring to fig. 4, 5, 6, 13, 14, 15, the bow-supported side-connected grass mowing module 200 of the present invention includes a bow-supported grass mowing head 7 and a side-connected frame 9, wherein the side-connected frame 9 is formed by a side frame ear seat joint 93, a side plug 91, a side plug hole 5 and a spring positioning pin 2 on a side frame body 92, the side plug 91 is disposed at one end of the side frame body 92, the side plug hole 5 is disposed at the other end of the side frame body 92, the spring positioning pin 2 is disposed on the side frame ear seat joint 93 and the side frame body 92 at the end of the side plug hole 5, and the bow-supported grass mowing head 7 is hinged to the side frame ear seat joint 93 on the side-connected frame body 9 through a shaft-connected ear seat 71 thereon.

Thirdly, refer to fig. 1, fig. 6, fig. 7, fig. 8, the utility model provides a bow holds in the palm formula side and dodges module 10 of beating grass includes bow holds in the palm formula side and connects support body 101, the electronic head 102 of beating grass of straight connecting rod, spring locating pin 2, the swing subassembly 103 and the spring 104 of beating grass, the electronic head 102 of beating grass of straight connecting rod passes through spring locating pin 2 to be connected on bow holds in the palm formula side connects support body 101, the swing subassembly 103 of beating grass the middle part and bow hold in the palm formula side connect support body 101 to pass through the bearing and be connected, the spring 1014 is connected and is being beaten the one end of subassembly 103 and bow hold in the palm between formula side connects support body 101 in the swing.

Fourthly, refer to fig. 8 and 9, the bow-type side-connected frame body 101 of the present invention includes a shaft-connected side plug 1011, a mounting rod 1012, a limit stop protrusion 1013, a bow support 1014, a spring joint 1015 and a swing grass-mowing assembly connecting shaft 1016, wherein one end of the mounting rod 1012 is hinged to one end of the shaft-connected side plug 1011, the other end is provided with a vertical hole 1 and a horizontal hole 1 which are communicated with each other, the horizontal hole 1 is used for being connected with a spring positioning pin 2, the lower end of the vertical hole 1 is connected with the swing grass-mowing assembly connecting shaft 1016 and one end of the bow support 1014, the swing grass-mowing assembly connecting shaft 1016 is concentric with the vertical hole 1, the lower part of the bow support 1014 is perpendicular to the mounting rod 1012, the limit stop protrusion 1013 is arranged at the lower end of the mounting rod 1012, and the spring joint 1015 is connected to the limit stop protrusion 1013.

Fifthly, referring to fig. 7, fig. 8, fig. 9 and fig. 10, the swing grass mowing assembly 103 of the present invention comprises a curved connecting rod electric grass mowing head 1031 and an avoiding contact rod 1032, wherein the curved connecting rod electric grass mowing head 1031 is formed by a curved connecting rod 10311 fixedly connected with a hole 1 on a motor of the electric grass mowing head 6, the curved connecting rod electric grass mowing head 1031 is respectively connected with a spring 104 and a swing grass mowing assembly connecting shaft 1016 through the hole 1 on the curved connecting rod 10311, and the avoiding contact rod 1032 is fixedly connected on the curved connecting rod 10311.

Sixthly, referring to fig. 8, 9 and 11, the electric grass-mowing head 102 with the straight connecting rod of the present invention is formed by fixedly connecting the straight connecting rod 1021 with the hole 1 to the motor of the electric grass-mowing head 6, and the electric grass-mowing head 102 with the straight connecting rod is connected with the vertical hole 1 of the mounting rod 1012 of the bow-supporting side-connected frame body 101 through the straight connecting rod 1021.

Seventhly, refer to fig. 2, fig. 5, fig. 16, fig. 19, the utility model discloses a bow holds in the palm still to be equipped with rope winding and unwinding device 20, wire rope 4 and loose pulley assembly 30 on the main module 100 of beating grass of formula that holds in the palm of the arch, rope winding and unwinding device 20 and loose pulley assembly 30 all fixed connection are on bow holds in the palm the main frame body 8 of main module 100 of beating grass of formula, wire rope 4 passes through loose pulley assembly 30's direction, both ends fixed connection respectively on rope winding and unwinding device 20 and bow holds in the palm the rope joint 72 of formula head 7 of beating grass.

Eighthly, refer to fig. 5, fig. 13, fig. 14, fig. 17, fig. 19 and fig. 20, the utility model discloses a bow holds in the palm still to be equipped with wire rope 4 and loose pulley assembly 30 on formula side junction grass mowing module 200, loose pulley assembly 30 fixed connection holds in the palm on the side bearer body 92 of formula side grass mowing module 200 in the bow, wire rope 4's one end fixed connection is on the rope joint 72 of bow holds in the palm formula grass mowing head 7, and the other end passes loose pulley assembly 30 and is used for connecting rope receiving and releasing ware 20.

Ninthly, referring to fig. 18, the rope winding and unwinding device 20 of the present invention includes a motor 201, a reverse double-reel 202 and a reel frame 203, the reverse double-reel 202 is formed by engaging two sets of pulleys provided with teeth 40 and holes 1 through teeth 40, wherein a set of shaft 3 provided with the pulleys of the teeth 40 and the holes 1 is connected to the reel frame 203, the other set of pulleys provided with the teeth 40 and the holes 1 is fixedly connected to the shaft 3 of the motor 201 through the shaft holes thereof, and one surface of the reel frame 203 is fixedly connected to the housing of the motor 201 at the end of the shaft 3 of the motor 201.

Tenthly, referring to fig. 1, fig. 2, fig. 7, fig. 12, fig. 13 and fig. 21, when the grass-mowing operation is performed on the field with narrow row spacing crops, the bow-support type grass-mowing head 7 can be selectively hinged on the corresponding main frame ear seat joint 83 of the bow-support type main grass-mowing module 100 according to the row spacing of the crops; when grass mowing operation is performed on a farmland with wide row spacing crops, the side plug 91 of the bow-support type side grass mowing module 200 can be inserted into the side inserting hole 5 of the main frame body 8 and then locked by the spring positioning pin 2 at one end or two ends of the bow-support type main grass mowing module 100, and when the grass mowing module is to be widened continuously to further improve the grass mowing efficiency, the bow-support type side grass mowing module 200 can be connected to the bow-support type side grass mowing module 200 continuously according to the connection mode; when the grass is needed to be cut among the plants of the fruit trees, the bow-support type side-avoiding grass cutting module 10 can be connected to the bow-support type main grass cutting module 100 and/or the bow-support type side grass cutting module 200 according to the connection mode.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides a module of grass is beaten to combination extension formula which characterized in that: including a bow hold in the palm formula owner module of beating grass, a plurality of bow hold in the palm formula side and connect the module of beating grass and/or bow hold in the palm formula side and dodge the module of beating grass, bow hold in the palm formula side and connect the module of beating grass can dismantle the grafting in bow hold in the palm one side or both sides that the module of beating grass was main to beat grass, but bow hold in the palm formula side and connect end to end between the module of beating grass, bow hold in the palm formula side and connect the module of beating grass can dismantle the grafting in bow hold in the palm formula owner module of beating grass and/or bow hold in the palm the formula side and connect the module of beating grass.

2. The combined extended mowing module according to claim 1, wherein: the bow-supporting type main grass mowing module comprises a bow-supporting type grass mowing head and a main frame body, wherein the main frame body is provided with at least one main frame lug seat joint, a trailer joint, side insertion holes and spring positioning pins on the main frame body, the trailer joint is arranged in the middle of the main frame body, the side insertion holes are arranged at two ends of the main frame body, the spring positioning pins are arranged on the main frame lug seat joint and the main frame body at the side insertion hole, and the bow-supporting type grass mowing head is hinged to the main frame lug seat joint on the main frame body through a shaft connection lug seat on the bow-supporting type grass mowing head.

3. The combined extended mowing module according to claim 1, wherein: the bow holds in the palm formula side module of beating grass includes bow and holds in the palm formula head of beating grass and side joint support body, the side joint support body is equipped with a side bearer ear seat joint, side plug, side jack and spring locating pin on the side bearer body and constitutes, and wherein, the one end at the side bearer body is established to the side plug, and the other end at the side bearer body is established to the side jack, and spring locating pin establishes on the side bearer ear seat joint and on the side bearer body of side jack place end, the bow holds in the palm formula head of beating grass and connects articulatedly through the hub connection ear seat on it and the side bearer ear seat on the side joint support body.

4. The combined extended mowing module according to claim 1, wherein: bow and hold in the palm formula side and join in marriage module of beating grass and include bow hold in the palm formula side joint support body, the electronic head of beating grass of straight connecting rod, spring location pin, swing and beat subassembly and spring of beating grass, the electronic head of beating grass of straight connecting rod is connected on bow holds in the palm formula side joint support body through spring location pin, the swing is beaten the middle part of subassembly and is held in the palm the formula side joint support body with the bow and be connected, spring coupling is beaten the one end of subassembly and bow and is held in the palm between the formula side joint support body in the swing.

5. The combined extended mowing module according to claim 4, wherein: bow and hold in the palm formula side joint support body and include that the axle links side plug, installation pole, spacing fender are protruding, bow and hold in the palm, spring joint and swing are beaten the subassembly connecting axle that grass, the one end of installation pole is articulated with the one end of axle linking side plug, and the other end is equipped with communicating vertical hole and horizontal hole, and the horizontal hole is used for being connected with spring locating pin, and the lower extreme in vertical hole is beaten the subassembly connecting axle with the swing and is connect with the one end that the arch held in the palm to the subassembly connecting axle is beaten grass in the swing with vertical hole concentric, the lower part that the arch held in the palm is perpendicular with the installation pole, spacing fender is protruding to be established the lower extreme at the installation pole, spring joint connects in spacing fender is protruding.

6. The combined extended mowing module according to claim 4, wherein: the swing grass mowing assembly comprises a bent connecting rod electric grass mowing head and an avoidance contact rod, the bent connecting rod electric grass mowing head is formed by a bent connecting rod with a hole fixedly connected to an electric motor of the electric grass mowing head, the bent connecting rod electric grass mowing head is connected with a spring and the swing grass mowing assembly connecting shaft through the hole in the bent connecting rod respectively, and the avoidance contact rod is fixedly connected to the bent connecting rod.

7. The combined extended mowing module according to claim 4, wherein: the straight connecting rod electric grass mowing head is formed by fixedly connecting a straight connecting rod with a hole on a motor of the electric grass mowing head, and the straight connecting rod electric grass mowing head is connected with a vertical hole of an installation rod of a bow-support type side connection frame body through the straight connecting rod.

8. The combined extended mowing module according to claim 2, wherein: the bow-type main grass mowing module is also provided with a rope retracting device, a steel wire rope and a pulley assembly, the rope retracting device and the pulley assembly are fixedly connected to a main frame body of the bow-type main grass mowing module, the steel wire rope is guided by the pulley assembly, and two ends of the steel wire rope are respectively fixedly connected to the rope retracting device and a rope joint of the bow-type grass mowing head.

9. The combined extended mowing module according to claim 3, wherein: the bow-supporting type side grass mowing module is further provided with a steel wire rope and a pulley assembly, the pulley assembly is fixedly connected to the side frame body of the bow-supporting type side grass mowing module, one end of the steel wire rope is fixedly connected to a rope joint of the bow-supporting type grass mowing head, and the other end of the steel wire rope penetrates through the pulley assembly and is connected with the rope winding and unwinding device.

10. The combined extended mowing module according to claim 8, wherein: the rope winding and unwinding device comprises a motor, a reverse double-twisting wheel and a twisting wheel frame, wherein the reverse double-twisting wheel is formed by meshing two groups of pulleys provided with teeth and holes through the teeth, one group of pulleys provided with the teeth and the holes are connected to the twisting wheel frame through a shaft, the other group of pulleys provided with the teeth and the holes are fixedly connected with the motor shaft through a shaft hole of the pulleys, and one surface of the twisting wheel frame is fixedly connected to a motor shell at the end of the motor shaft.

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