CN112889454B - Foldable large-scale mowing equipment with height adjusting function - Google Patents

Abstract

The invention discloses a foldable large-scale mowing device with a height adjusting function, and belongs to the field of mowers. The main body part of the foldable large-scale mowing equipment comprises a middle hood assembly and side hood assemblies on two sides, folding oil cylinders are respectively arranged between the middle hood assembly and the side hood assemblies on the two sides, supporting wheel assemblies are arranged at the rear parts of the middle hood assembly and the side hood assemblies, height adjusting oil cylinders are arranged between the middle hood assembly and middle wheel frames, the middle wheel frames are connected with the side wheel frames on the two sides through linkage connecting rod assemblies, and height adjusting connecting rods are further arranged between the middle wheel frames and the traction assemblies. The folding transportation can be carried out under the condition that the mower is guaranteed to have a large cutting width, the linkage adjustment of the ground clearance of the mower is realized, the height adjusting mechanism is ingenious in design, simple and compact in structure, flexible and convenient to adjust, high in adaptability to complex environments, and the working efficiency and the use flexibility of the large mower are greatly improved.

Description

Foldable large-scale mowing equipment with height adjusting function

Technical Field

The present invention relates to a lawn mower, and more particularly, to a foldable large-sized mowing apparatus having a height adjusting function.

Background

With the development of economy and the improvement of living standard of people, the requirements of people on environmental greening are higher and higher, the quantity of lawn owned by cities and other areas is more and more, and the problem is further brought that the requirements of lawn maintenance are higher and higher, so that the requirements of mowing equipment are increased increasingly. Because the lawn area is generally great, the work load of adopting current small-size mowing equipment to mow is very big, and the work efficiency of mowing also is very low. Therefore, a plurality of large mowing devices are available on the market at present, and are specially used for maintaining and trimming large-area lawns and lawns, and the large mowing devices are poor in adaptability to rugged terrains due to wide mowing widths, and have much inconvenience in transition transportation.

Through search, Chinese patent number ZL201520584500.4 discloses a lawn mower which comprises a frame, a mowing mechanism and a transmission mechanism; the frame comprises a main bracket and auxiliary brackets which are rotatably arranged on two sides of the main bracket through hinges, an air spring is connected between the main bracket and the auxiliary brackets, and rollers are arranged at the tail ends of the main bracket and the auxiliary brackets; the mowing mechanism is arranged on the auxiliary support and comprises a cutter head shaft which is rotatably arranged on the auxiliary support, the cutter head shaft is vertical to the upper end surface and the lower end surface of the auxiliary support, the head part of the cutter head shaft extends downwards to the outside of the auxiliary support, and a mowing blade is fixed at the head part; the transmission mechanism comprises a driving shaft, a driven shaft and a motor, the driving shaft is connected with the motor, and the driving shaft and the driven shaft are connected with the cutter head shaft through gears in a meshed mode. This patent application adopts the design of big width of cut, and utilizes gas spring to connect mutual articulated main support and auxiliary stand for prune the lawn that the area is big and can adapt to different topography. But the cutting width is wide, and the auxiliary bracket does not have the folding function, so that the transportation at a transition place is inconvenient.

In view of the above-mentioned problems of large mowing equipment such as the above-mentioned mower, which is inconvenient to transport in a transition due to a wide swath width, there are mowers with adjustable swath width or foldable swaths. The retractable mower disclosed in the chinese patent No. ZL201620857372.0 includes a suspension frame connected to a tractor, a fixing base plate connected to the suspension frame, a middle gear box disposed on the fixing base plate, and two mowing devices respectively disposed on both sides of the fixing base plate, wherein the middle gear box is provided with an input shaft connected to a power output shaft of the tractor, both sides of the middle gear box are respectively provided with output long shafts, the mowing devices include a support plate, a side gear box disposed above the support plate, and a mowing tool disposed below the support plate, the two output long shafts respectively penetrate through the two side gear boxes, an output end of the side gear box is connected to the mowing tool, the fixing base plate is provided with two oil cylinders, piston rods of the two oil cylinders are respectively connected to the two support plates, the fixing base plate is provided with a guide rail shaft, and the two support plates are respectively provided with sleeves matched with the guide rail shaft. The lawn mower of this patent application is for cutting the lawn mower of the scalable regulation of width, its both sides backup pad can inwards or outside flexible regulation, in order to change the width of cutting the width, the transportation of conveniently changing around, there is the structure complicacy in the mode of this flexible width of regulation, and be difficult to realize according to the topography function of floatingly mowing at the certain limit, cut grass the width that needs to shorten to special topography, bring inconvenience for the operation of lawn mower like this, and adopt the short width to cut grass and lead to the problem that work efficiency reduces again. As also disclosed in chinese patent No. ZL201820862693.9, "a foldable mower" includes a main cutter head, and a suspension arm, a spline shaft, a gear box, and a main cutter shaft that are provided on the main cutter head, the main cutter shaft being provided with a main cutter, and further including an auxiliary cutter head that is connected to the main cutter shaft in a foldable manner, the main cutter head being further provided with an auxiliary cutter shaft, the auxiliary cutter shaft being provided with an auxiliary cutter shaft, the auxiliary cutter shaft and the auxiliary cutter shaft being respectively located on both sides of the main cutter shaft, and the auxiliary cutter shaft and the main cutter shaft being respectively provided thereon; the spline shaft and the input end of the gear box, the output end of the gear box and the main cutter shaft and the slave cutter shaft, and the main cutter shaft and the auxiliary cutter shaft are connected through synchronous belts. The lawn mower of this patent application is the lawn mower that changes the width of mowing through folding mode, but it can only unilateral folding, and need take off the drive belt when folding, complex operation to also do not have the function of floating mowing, unable self-adaptation topography variation.

In addition, such large-scale mowing equipment often lacks the height adjusting function of mowing, the ground clearance of a cutter head cannot be adjusted, and although some mowers are designed with the height adjusting function of the ground clearance, most mowers are hung on a support for height adjustment, and a large-size support needs to be designed in such a way, so that the mower is complex and bulky in structure, large in self weight, heavy in work and high in energy consumption.

Disclosure of Invention

1. Technical problems to be solved by the invention

The invention aims to provide foldable large-scale mowing equipment with a height adjusting function, and aims to solve the defects that an existing large-scale mowing equipment is complex and bloated in mowing height adjusting structure, inconvenient in transition transportation and the like.

2. Technical scheme

In order to achieve the purpose, the technical scheme provided by the invention is as follows:

the invention relates to a foldable large-scale mowing device with a height adjusting function, which comprises a hood, a transmission mechanism and a mowing mechanism, wherein the hood comprises a middle hood component and side hood components which are rotatably arranged at two sides of the middle hood component through a foldable rotating shaft, the middle hood component and the side hood components are respectively provided with the mowing mechanism, the transmission mechanism is arranged on the hood and is in transmission connection with each mowing mechanism through a universal transmission shaft, a foldable oil cylinder for driving the side hood components to be overturned and folded is respectively arranged between the middle hood component and the side hood components at the two sides, the front end of the middle hood component is rotatably provided with a traction component, the rear end of the middle hood component is rotatably provided with a middle wheel carrier, the middle wheel carrier is provided with a middle rear supporting wheel, and the rear ends of the side hood components are rotatably provided with side wheel carriers, the side wheel carrier on be equipped with the side rear support wheel, middle aircraft bonnet subassembly and middle wheel carrier between be equipped with the altitude mixture control hydro-cylinder, middle wheel carrier be connected through linkage link assembly between the side wheel carrier of both sides, middle wheel carrier and draw the subassembly between still be equipped with the altitude mixture control connecting rod, middle aircraft bonnet subassembly, draw the subassembly, the altitude mixture control connecting rod and middle wheel carrier constitute four-bar linkage for drive the synchronous swing of subassembly and adjust the front end height when the altitude mixture control hydro-cylinder control middle wheel carrier rotates the regulation rear end height.

Further, linkage link assembly include the connecting rod and locate the connecting rod end spare at connecting rod both ends, the connecting rod at least with the connecting rod end spare axial rotation of one end be connected, the one end of connecting rod articulated mutually with the centre wheel carrier through the connecting rod end spare that corresponds the end, the other end of connecting rod articulated mutually with the side wheel carrier through the connecting rod end spare that corresponds the end, and the axis of connecting rod is mutually perpendicular with the articulated axis of the connecting rod end spare at both ends.

Furthermore, two ends of the middle wheel frame are hinged to the rear part of the middle hood assembly through a middle wheel frame rotating shaft, a wheel frame swing arm is arranged in the middle of the middle wheel frame, and a piston rod of the height adjusting oil cylinder is hinged to the wheel frame swing arm; the front part of the middle hood assembly is provided with a front hinge seat, and the traction assembly is hinged with the front hinge seat; the front end of the height adjusting connecting rod is hinged with the traction assembly, and the rear end of the height adjusting connecting rod is hinged with the middle wheel frame.

Furthermore, the rear end of the height adjusting connecting rod is hinged with the middle wheel frame through a connecting block, wherein the connecting block is hinged with the middle wheel frame, and the height adjusting connecting rod is connected with the connecting block through an adjustable nut.

Furthermore, two ends of the folding oil cylinder are respectively hinged with the middle hood assembly and the side hood assembly, and the hinged part of the folding oil cylinder and the middle hood assembly or the side hood assembly is connected by adopting a long waist hole sliding structure.

Furthermore, the side hood assembly is provided with a folding oil cylinder hinge seat used for being hinged with the folding oil cylinder, the long waist hole sliding structure comprises a waist-shaped hole arranged on the folding oil cylinder hinge seat and a pin shaft arranged at the end part of a piston rod of the folding oil cylinder, and the pin shaft is in sliding fit with the waist-shaped hole.

Furthermore, the transmission mechanism comprises a transfer case, a middle transmission shaft, a middle right-angle gear box, a side transmission shaft and a side right-angle gear box, the transfer case is arranged on the middle hood assembly and is provided with an input shaft and three output shafts, the middle output shaft of the transfer case is in transmission connection with the middle right-angle gear box on the middle hood assembly through the middle transmission shaft, and the middle right-angle gear box is in transmission connection with the mowing mechanism at the bottom of the middle hood assembly; output shafts on two sides of the transfer case are in transmission connection with side right-angle gear boxes on corresponding side hood assemblies through side transmission shafts respectively, the side right-angle gear boxes are in transmission connection with mowing mechanisms at the bottoms of the side hood assemblies, and the side transmission shafts are universal telescopic transmission shafts.

Furthermore, the mowing mechanism is a cutter head assembly arranged at the bottoms of the middle hood assembly and the side hood assembly, and grass blocking curtains are further arranged on the sides of the middle hood assembly and the side hood assembly.

Furthermore, the traction assembly is of a triangular structure, and a quick-connection joint for connecting a tractor is arranged at the front end of the traction assembly.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:

(1) the invention relates to a foldable large-scale mowing device with a height adjusting function, the main body part of the mowing device consists of a middle hood component and side hood components which are rotatably arranged at two sides of the middle hood component through a foldable rotating shaft, folding oil cylinders for driving the side hood components to turn and fold are respectively arranged between the middle hood component and the side hood components at the two sides, supporting wheel components are arranged at the rear parts of the middle hood component and the side hood components, a height adjusting oil cylinder is arranged between the middle hood component and a middle wheel frame, the middle wheel frame is connected with the side wheel frames at the two sides through a linkage connecting rod component, a height adjusting connecting rod is also arranged between the middle wheel frame and a traction component, and the middle hood component, the traction component, the height adjusting connecting rod and the middle wheel frame form a four-bar mechanism, the height adjusting oil cylinder is used for controlling the middle wheel frame to rotate to adjust the height of the rear end and simultaneously driving the traction assembly to synchronously swing to adjust the height of the front end; the height adjusting mechanism is ingenious in design, simple and compact in structure, flexible and convenient to adjust, high in adaptability to complex environments, and capable of greatly improving the working efficiency and the use flexibility of the large-scale mower;

(2) the invention relates to a foldable large-scale mowing device with a height adjusting function, which comprises a linkage connecting rod and connecting rod end pieces arranged at two ends of the connecting rod, wherein the connecting rod is axially and rotatably connected with the connecting rod end piece at least at one end; the linkage connecting rod assembly is adopted to realize the connection of the middle wheel frame and the side wheel frames at the two sides, the side wheel frames at the two sides can be synchronously driven to move together when the middle wheel frame is used for height adjustment, the synchronous height adjustment of the machine covers at the two sides is realized, the folding motion and the terrain-imitating floating motion of the two groups of side machine cover assemblies can not be influenced by the axial rotation of the connecting rod, the structural design is simple and compact, and the motion stability is good;

(3) according to the foldable large mowing equipment with the height adjusting function, the height adjusting oil cylinder controls the middle wheel carrier to swing by utilizing the wheel carrier swing arm to adjust the height of the rear end of the mower, meanwhile, the height adjusting connecting rod is utilized to drive the traction assembly to swing at the front part of the middle hood assembly to adjust the height of the front end of the mower, the ground clearance adjustment of mowing mechanisms on three different hood assemblies can be realized by only one group of height adjusting oil cylinders, and the height adjustment is stable and reliable;

(4) according to the foldable large-scale mowing equipment with the height adjusting function, the rear end of the height adjusting connecting rod is hinged with the middle wheel carrier through the connecting block, the connecting block is hinged with the middle wheel carrier, the height adjusting connecting rod is connected with the connecting block through the adjustable nut, the effective length of the height adjusting connecting rod can be adjusted through the adjustable nut, the initial position of the four-bar mechanism can be adjusted conveniently, meanwhile, the maximum ground clearance of the mower can be improved through the length adjustment of the height adjusting connecting rod, and the transition passing performance of the mower is improved;

(5) according to the foldable large mowing equipment with the height adjusting function, two ends of the folding oil cylinder are respectively hinged with the middle hood assembly and the side hood assembly, the hinged positions of the folding oil cylinder and the middle hood assembly or the side hood assembly are connected by the long-waist-hole sliding structure, the side hood assemblies on two sides can have certain movement allowance by utilizing the long-waist-hole sliding structure, terrain-imitating mowing operation can be performed according to the height of the ground, and the working flexibility of the large mowing equipment is improved;

(6) according to the foldable large mowing equipment with the height adjusting function, the folding oil cylinder hinge seat used for being hinged with the folding oil cylinder is arranged on the side edge hood assembly, the long waist hole sliding structure comprises a waist-shaped hole arranged on the folding oil cylinder hinge seat and a pin shaft arranged at the end part of the piston rod of the folding oil cylinder, and the pin shaft is in sliding fit with the waist-shaped hole;

(7) according to the foldable large-scale mowing equipment with the height adjusting function, the transmission mechanism is in transmission connection with the corresponding mowing mechanism by adopting the three-output-shaft transfer case and the transmission shaft, the transmission is stable and reliable, and the transmission efficiency is high; the side transmission shaft is a universal telescopic transmission shaft, can adapt to terrain-imitating floating movement of the side hood assembly, and greatly improves the working stability of the mowing equipment;

(8) according to the foldable large-scale mowing equipment with the height adjusting function, the mowing mechanism is the cutter head assembly arranged at the bottoms of the middle hood assembly and the side hood assembly, the grass blocking curtains are further arranged on the side edges of the middle hood assembly and the side hood assembly, three groups of cutters are utilized for independent and synchronous mowing operation, grass chopping is prevented from splashing around by the grass blocking curtains, and mowing efficiency and stability are achieved;

(9) according to the foldable large-scale mowing equipment with the height adjusting function, the traction assembly is of the triangular structure, and the quick-connection joint for connecting the tractor is arranged at the front end of the traction assembly, so that the mowing equipment can be connected with the tractor quickly.

Drawings

FIG. 1 is an angled perspective view of a large foldable mowing device with height adjustment according to the present invention;

FIG. 2 is another perspective view of a foldable large mowing device with height adjustment according to the present invention;

FIG. 3 is an enlarged view of the structure at K in FIG. 1;

FIG. 4 is an enlarged plan view of the structure of FIG. 1 at M;

FIG. 5 is a top view of a foldable large mowing apparatus with height adjustment according to the present invention;

FIG. 6 is a side view of a foldable large mowing apparatus with height adjustment according to the present invention;

fig. 7 is a schematic view of the height adjustment principle of the foldable large-sized mowing device with the height adjustment function according to the invention.

The reference numerals in the schematic drawings illustrate:

1. an intermediate hood assembly; 1-1, a front hinge seat; 2. a side hood assembly; 2-1, folding an oil cylinder hinged seat; 2-1a, a waist-shaped hole; 3. a folding rotating shaft; 4. a traction assembly; 5. folding the oil cylinder; 5-1, a piston rod; 5-1a, a pin shaft; 6. an intermediate wheel carrier; 6-1, a middle wheel carrier rotating shaft; 6-2, wheel carrier swing arm; 7. a middle rear support wheel; 8. a side wheel carrier; 8-1, a side wheel carrier rotating shaft; 9. a lateral rear support wheel; 10. a linkage connecting rod assembly; 10-1, a connecting rod; 10-2, connecting rod end piece; 11. a transfer case; 12. an intermediate transmission shaft; 13. an intermediate right angle gear box; 14. a side drive shaft; 15. a side right-angle gear box; 16. a height adjusting oil cylinder; 17. a height adjustment link; 18. a grass blocking curtain; 19. a cutter head assembly.

Detailed Description

For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

[ examples ]

Referring to fig. 1 to 7, the foldable large-scale mowing equipment with the height adjusting function of the embodiment includes a hood, a transmission mechanism and mowing mechanisms, wherein the hood includes a middle hood assembly 1 and side hood assemblies 2 rotatably mounted on two sides of the middle hood assembly 1 through a foldable rotating shaft 3, the mowing mechanisms are respectively arranged on the middle hood assembly 1 and the side hood assemblies 2, the transmission mechanism is arranged on the hood and is in transmission connection with the mowing mechanisms through a universal transmission shaft, the side hood assemblies 2 can be turned and folded on the middle hood assembly 1, and the transmission mechanism drives the mowing mechanisms to rotate to mow. Folding oil cylinders 5 for driving the side hood assemblies 2 to turn and fold are respectively arranged between the middle hood assembly 1 and the side hood assemblies 2 on the two sides, the telescopic direction of the folding oil cylinders 5 is preferably perpendicular to the axial direction of the folding rotating shaft 3, so that the middle hood assembly 1 and the side hood assemblies 2 form a triangular structure through the folding oil cylinders 5, the side hood assemblies 2 can be driven to turn and fold or turn and unfold around the folding rotating shaft 3 through the telescopic motion of the folding oil cylinders 5, and in order to stably fix the side hood assemblies 2 after being folded, hydraulic locks can be arranged on the folding oil cylinders 5; the front end of the middle hood component 1 is rotatably provided with a traction component 4, the rear end of the middle hood component 1 is rotatably provided with a middle wheel carrier 6, the middle wheel carrier 6 is provided with a middle rear support wheel 7, specifically, two sides of the middle wheel carrier 6 can be respectively provided with one middle rear support wheel 7, the rear end of the side hood component 2 is rotatably provided with a side wheel carrier 8, the side wheel carrier 8 is provided with a side rear support wheel 9, and specifically, one side of the side wheel carrier 8 close to the outside can be provided with a side rear support wheel 9; a height adjusting oil cylinder 16 is arranged between the middle hood assembly 1 and the middle wheel frame 6, the telescopic direction of the height adjusting oil cylinder 16 is preferably perpendicular to the rotating axis of the middle wheel frame 6, so that the middle hood assembly 1 and the middle wheel frame 6 also form a triangular structure through the height adjusting oil cylinder 16, the middle wheel frame 6 can be driven to swing at the rear part of the middle hood assembly 1 through the telescopic motion of the height adjusting oil cylinder 16, and the middle rear supporting wheel 7 is further driven to move up and down; the middle wheel frame 6 is connected with the side wheel frames 8 at the two sides through a linkage connecting rod assembly 10, and when the height adjusting oil cylinder 16 drives the middle rear supporting wheel 7 to move up and down, the linkage connecting rod assembly 10 synchronously drives the side rear supporting wheels 9 at the two sides to move up and down, so that the rear height adjustment of the mowing equipment is realized; in order to synchronize the front and rear height adjustment of the mowing equipment, a height adjusting connecting rod 17 is further arranged between the middle wheel frame 6 and the traction assembly 4, and the middle hood assembly 1, the traction assembly 4, the height adjusting connecting rod 17 and the middle wheel frame 6 form a four-bar mechanism which is used for driving the traction assembly 4 to synchronously swing to adjust the front end height while the height adjusting oil cylinder 16 controls the middle wheel frame 6 to rotate to adjust the rear end height. Namely, in the swinging process of the middle wheel frame 6, the height adjusting connecting rod 17 can drive the traction component 4 to synchronously swing at the front end of the middle hood component 1, so that the synchronous height adjustment of the front part of the mowing equipment is realized. The utility model provides a collapsible large-scale mowing equipment with altitude mixture control function, its main part comprises middle aircraft bonnet subassembly 1 and 2 triplexes of side aircraft bonnet subassembly through folding pivot 3 rotation installation in middle aircraft bonnet subassembly 1 both sides, can fold the transportation under the circumstances that the assurance lawn mower has the large width of cut, utilize four-bar linkage and linkage link assembly to realize the liftoff height linkage of lawn mower triplex simultaneously and adjust, altitude mixture control mechanism design benefit, moreover, the steam generator is simple and compact in structure, it is nimble convenient to adjust, strong adaptability to complex environment, the work efficiency and the use flexibility of large-scale lawn mower have been improved by a wide margin.

As shown in fig. 3, in the present embodiment, the linkage link assembly 10 includes a connecting rod 10-1 and connecting rod end pieces 10-2 disposed at two ends of the connecting rod 10-1, the connecting rod 10-1 is axially and rotatably connected to at least one connecting rod end piece 10-2 at one end, one end of the connecting rod 10-1 is hinged to the middle wheel frame 6 through the corresponding connecting rod end piece 10-2, the other end of the connecting rod 10-1 is hinged to the side wheel frame 8 through the corresponding connecting rod end piece 10-2, and an axis of the connecting rod 10-1 is perpendicular to a hinge axis of the connecting rod end pieces 10-2 at two ends. The linkage connecting rod assembly 10 is adopted to realize the connection of the middle wheel frame 6 and the side wheel frames 8 on the two sides, the side wheel frames 8 on the two sides can be synchronously driven to move together when the middle wheel frame 6 is subjected to height adjustment, the synchronous height adjustment of the machine covers on the two sides is realized, the folding movement and the terrain-imitating floating movement of the two groups of side machine cover assemblies 2 can not be influenced by utilizing the axial rotation of the connecting rod 10-1, the structural design is simple and compact, and the movement stability is good. In order to make the linkage connecting rod assembly 10 rotate more stably and flexibly, the axis of the connecting rod 10-1 is preferably coplanar with the axis of the folding rotating shaft 3 on the corresponding side, so that the transmission between the middle wheel frame 6 and the side wheel frames 8 on the two sides is more stable.

As shown in fig. 3, 6 and 7, in this embodiment, two ends of the middle wheel frame 6 are hinged to the rear portion of the middle hood assembly 1 through a middle wheel frame rotating shaft 6-1, two ends of the side wheel frame 8 are hinged to the rear portion of the side hood assembly 2 through a side wheel frame rotating shaft 8-1, a wheel frame swing arm 6-2 is arranged in the middle of the middle wheel frame 6, a piston rod of the height adjusting cylinder 16 is hinged to the wheel frame swing arm 6-2, and a cylinder body of the height adjusting cylinder 16 is hinged to the middle hood assembly 1; the front part of the middle hood component 1 is provided with a front hinge seat 1-1, and the traction component 4 is hinged with the front hinge seat 1-1; the front end of the height adjusting connecting rod 17 is hinged with the traction component 4, and the rear end of the height adjusting connecting rod 17 is hinged with the middle wheel frame 6. Specifically, as shown in fig. 6 and 7, a hinge point of the traction assembly 4 and the front hinge seat 1-1 is a, a hinge point of the height adjustment link 17 and the traction assembly 4 is B, the hinge point B is located below the hinge point a on the traction assembly 4, the hinge point between the intermediate wheel frame 6 and the intermediate hood assembly 1 is C, that is, the axis of the intermediate wheel frame rotating shaft 6-1 is the hinge point C, the hinge point between the height adjustment link 17 and the intermediate wheel frame 6 is D, and the hinge points a-B-D-C sequentially form a four-bar linkage. In fig. 7, when the height adjusting cylinder 16 extends, the wheel frame swing arm 6-2 drives the middle wheel frame 6 to rotate clockwise around the hinge point C, so that the middle rear supporting wheel 7 moves downward relative to the middle hood assembly 1, and the height adjusting link 17 pulls the traction assembly 4 to rotate counterclockwise around the hinge point a, so that the connection point of the traction assembly 4 and the tractor also moves downward relative to the middle hood assembly 1, and the ground clearance of the middle hood assembly 1 is further increased; conversely, the height adjusting cylinder 16 is contracted to drive the intermediate rear support wheel 7 and the traction assembly 4 to form the state shown in fig. 6, so that the ground clearance of the intermediate hood assembly 1 is reduced. By adopting the mowing height adjusting mechanism, the height adjusting oil cylinder 16 controls the middle wheel carrier 6 to swing by utilizing the wheel carrier swing arm 6-2 to adjust the height of the rear end of the mower, meanwhile, the height adjusting connecting rod 17 is utilized to drive the traction assembly 4 to swing at the front part of the middle hood assembly 1 to adjust the height of the front end of the mower, the height of the mowing mechanisms on three different hood assemblies from the ground can be adjusted by only one group of height adjusting oil cylinders 16, and the height adjustment is stable and reliable.

In addition, in this embodiment, the rear end of the height adjusting connecting rod 17 is hinged to the intermediate wheel frame 6 through a connecting block, wherein the connecting block is hinged to the intermediate wheel frame 6, the height adjusting connecting rod 17 is connected to the connecting block through an adjustable nut, specifically, the rear end of the height adjusting connecting rod 17 can be designed to be a threaded section, a through hole for penetrating through the rear end of the height adjusting connecting rod 17 is formed in the connecting block, nuts are arranged on two sides of the connecting block at the rear end of the height adjusting connecting rod 17, and the position of the height adjusting connecting rod 17 on the connecting block can be changed through adjustment of the front and rear nuts of the connecting block, so that the effective length of the height adjusting connecting rod 17 is changed. The effective length of the height adjusting connecting rod 17 can be adjusted by utilizing the adjustable nut, the initial position adjustment of the four-bar mechanism is facilitated, meanwhile, the maximum ground clearance of the mower can be improved by utilizing the length adjustment of the height adjusting connecting rod 17, and the transition passing performance of the mower is improved.

In the large foldable mowing equipment with the height adjusting function, the side hood assembly 2 further has a terrain-imitating mowing function, as shown in fig. 1 and 4, two ends of the folding cylinder 5 are respectively hinged with the middle hood assembly 1 and the side hood assembly 2, and the hinged part of the folding cylinder 5 and the middle hood assembly 1 or the side hood assembly 2 is connected by a long waist hole sliding structure. The long waist hole sliding structure is utilized to enable the side hood assemblies 2 on two sides to have certain movement allowance, terrain-imitating mowing operation can be carried out according to the height of the ground, and the working flexibility of large mowing equipment is improved. Specifically, a folding oil cylinder hinge seat 2-1 used for being hinged with a folding oil cylinder 5 is arranged on the side hood assembly 2, the long waist hole sliding structure comprises a waist-shaped hole 2-1a arranged on the folding oil cylinder hinge seat 2-1 and a pin shaft 5-1a arranged at the end part of a piston rod 5-1 of the folding oil cylinder 5, the pin shaft 5-1a is in sliding fit with the waist-shaped hole 2-1a (as shown in fig. 4), and a cylinder body of the folding oil cylinder 5 is hinged with the middle hood assembly 1. The long waist hole sliding structure has the advantages of simple structure and convenience in assembly and manufacture.

As shown in fig. 1, 2 and 5, in the present embodiment, the transmission mechanism includes a transfer case 11, an intermediate transmission shaft 12, an intermediate right-angle gear case 13, a side transmission shaft 14 and a side right-angle gear case 15, the transfer case 11 is mounted on the intermediate hood assembly 1, the transfer case 11 has an input shaft and three output shafts, a power output shaft of the tractor is in transmission connection with the input shaft of the transfer case 11, the intermediate output shaft of the transfer case 11 is in transmission connection with the intermediate right-angle gear case 13 on the intermediate hood assembly 1 through the intermediate transmission shaft 12, and the intermediate right-angle gear case 13 is in transmission connection with the mowing mechanism at the bottom of the intermediate hood assembly 1; output shafts on two sides of the transfer case 11 are in transmission connection with side right-angle gear boxes 15 on the corresponding side hood assemblies 2 through side transmission shafts 14 respectively, and the side right-angle gear boxes 15 are in transmission connection with mowing mechanisms at the bottoms of the side hood assemblies 2; the middle transmission shaft 12 is a universal transmission shaft, and the side transmission shaft 14 is a universal telescopic transmission shaft. The transmission mechanism adopts the three-output-shaft transfer case 11 and the transmission shaft to be in transmission connection with the corresponding mowing mechanism, so that the transmission is stable and reliable, and the transmission efficiency is high; the side transmission shaft 14 is a universal telescopic transmission shaft, can adapt to the terrain-imitating floating motion of the side hood assembly 2, and greatly improves the working stability of the mowing equipment. The transfer case 11, the middle transmission shaft 12, the middle right-angle gear box 13, the side transmission shaft 14 and the side right-angle gear box 15 are all conventional products, and the specific structural principle thereof is not described herein again.

As shown in fig. 6, in the present embodiment, the grass cutting mechanism is a cutter head assembly 19 disposed at the bottom of the middle hood assembly 1 and the side hood assembly 2, and grass blocking curtains 18 are further disposed at the sides of the middle hood assembly 1 and the side hood assembly 2. Specifically, the cutter head assembly 19 can adopt the structures such as flail knives of the existing mower, the grass blocking curtain 18 can be formed by chains and is arranged on the peripheral sides of the middle hood assembly 1 and the side hood assembly 2, three groups of cutter heads are used for independent and synchronous mowing operation, the grass blocking curtain 18 is used for preventing broken grass from splashing, and mowing efficiency and stability are achieved.

As shown in fig. 1 and 2, the towing assembly 4 in this embodiment is preferably of a triangular structure for better structural stability, and a quick coupling for connecting a tractor is provided at the front end of the towing assembly 4, which can adopt an existing connection structure. The middle hood assembly 1 and the side hood assembly 2 may be formed by bending and welding metal plates, a downward flange structure is formed by bending the outer side of the side hood assembly 2, and the side hood assembly 2 is supported by a side rear support wheel 9 at the rear end thereof.

The foldable large-scale mowing equipment with the height adjusting function is connected with a tractor by using a quick connector of the traction assembly 4 during working, the tractor drags the mowing equipment, an input shaft of the transfer case 11 is connected with an output shaft of the tractor through a universal shaft, and the folding oil cylinder 5 and the height adjusting oil cylinder 16 are connected with a hydraulic control system of the tractor. The output shaft of the tractor divides power into three paths for transmission through the transfer case 11, drives the cutter head assembly 19 on the middle hood assembly 1 to rotate through the middle transmission shaft 12 and the middle right-angle gear box 13 respectively, drives the cutter head assembly 19 on the side hood assembly 2 to rotate through the side transmission shaft 14 and the side right-angle gear box 15, and drives the whole large-scale mowing equipment to move for mowing operation with large mowing breadth by utilizing the tractor. When the mowing height needs to be adjusted, the height adjusting oil cylinder 16 stretches and retracts to drive the middle wheel carrier 6 to swing, so that the middle rear supporting wheel 7 moves up and down relative to the middle hood assembly 1, meanwhile, the linkage connecting rod assembly 10 drives the side wheel carrier 8 at the rear end of the side hood assembly 2 to swing synchronously, the side rear supporting wheel 9 is driven to move up and down relative to the side hood assembly 2 synchronously, meanwhile, the middle wheel carrier 6 drives the traction assembly 4 to swing up and down in the same direction through the height adjusting connecting rod 17, the height adjustment of the front part of the middle hood assembly 1 is achieved, and the ground clearance adjustment of the cutter head assembly 19 of the whole mowing equipment is further completed. When the multifunctional lawn mower works on complex terrains, the folding oil cylinder 5 is provided with a long waist hole sliding structure, so that the side hood assembly 2 can do pitching motion in a certain range relative to the middle hood assembly 1, and the lawn mowing operation can be realized in the terrains. When transportation needs to be carried out, the folding oil cylinder 5 is contracted to drive the side hood assemblies 2 at two sides to be turned and folded upwards, so that the transverse size of the mowing equipment is reduced; in order to improve the passing ability, the effective length of the height adjusting connecting rod 17 can be adjusted through an adjustable nut at the rear end of the height adjusting connecting rod 17, so that the middle rear supporting wheel 7 further lifts the middle hood assembly 1, and the passing ability of the transition of the mowing equipment is improved.

The foldable large-scale mowing equipment with the height adjusting function can be folded and transported under the condition that a large mowing range of the mower is guaranteed, meanwhile, the linkage adjustment of the ground clearance of three parts of the mower is realized by utilizing the four-bar linkage mechanism and the linkage connecting rod assembly, the height adjusting mechanism is ingenious in design, simple and compact in structure, flexible and convenient to adjust, high in adaptability to complex environments, and the working efficiency and the use flexibility of the large mower are greatly improved. The multifunctional lawn mower has the terrain-imitating function, can perform terrain-imitating mowing operation according to the height of the ground, and improves the working flexibility of large-scale mowing equipment.

It will be understood that when an element is referred to as being "secured 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 as used herein are for illustrative purposes only and do not represent the only embodiments.

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 is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The present invention and its embodiments have been described above schematically, and the description is not intended to be limiting, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims (8)

1. The utility model provides a collapsible large-scale mowing equipment with height control function, includes aircraft bonnet, drive mechanism and mowing mechanism, the aircraft bonnet include middle aircraft bonnet subassembly (1) and rotate through folding pivot (3) and install in side aircraft bonnet subassembly (2) of middle aircraft bonnet subassembly (1) both sides, middle aircraft bonnet subassembly (1) and side aircraft bonnet subassembly (2) on be equipped with mowing mechanism respectively, drive mechanism locate on the aircraft bonnet to be connected its characterized in that through universal drive shaft and each mowing mechanism transmission: the folding oil cylinders (5) used for driving the side hood assemblies (2) to turn and fold are respectively arranged between the middle hood assembly (1) and the side hood assemblies (2) on two sides, the traction assembly (4) is arranged at the front end of the middle hood assembly (1) in a rotating mode, the middle wheel frame (6) is arranged at the rear end of the middle hood assembly (1) in a rotating mode, the middle wheel frame (6) is provided with a middle rear supporting wheel (7), the rear end of the side hood assembly (2) is provided with a side wheel frame (8) in a rotating mode, the side wheel frame (8) is provided with a side rear supporting wheel (9), a height adjusting oil cylinder (16) is arranged between the middle hood assembly (1) and the middle wheel frame (6), the middle wheel frame (6) is connected with the side wheel frames (8) on two sides through a linkage connecting rod assembly (10), and a height adjusting connecting rod (17) is further arranged between the middle wheel frame (6) and the traction assembly (4), the middle hood assembly (1), the traction assembly (4), the height adjusting connecting rod (17) and the middle wheel frame (6) form a four-bar mechanism, and the four-bar mechanism is used for driving the traction assembly (4) to synchronously swing to adjust the height of the front end while the height adjusting oil cylinder (16) controls the middle wheel frame (6) to rotate to adjust the height of the rear end; the linkage connecting rod assembly (10) comprises a connecting rod (10-1) and connecting rod end pieces (10-2) arranged at two ends of the connecting rod (10-1), the connecting rod (10-1) is at least connected with the connecting rod end pieces (10-2) at one end in an axial rotating mode, one end of the connecting rod (10-1) is hinged to the middle wheel carrier (6) through the connecting rod end pieces (10-2) at the corresponding ends, the other end of the connecting rod (10-1) is hinged to the side wheel carrier (8) through the connecting rod end pieces (10-2) at the corresponding ends, and the axis of the connecting rod (10-1) is perpendicular to the hinged axis of the connecting rod end pieces (10-2) at the two ends.

2. A large foldable mowing apparatus with height adjustment according to claim 1, wherein: the two ends of the middle wheel frame (6) are hinged to the rear part of the middle hood assembly (1) through a middle wheel frame rotating shaft (6-1), a wheel frame swinging arm (6-2) is arranged in the middle of the middle wheel frame (6), and a piston rod of the height adjusting oil cylinder (16) is hinged to the wheel frame swinging arm (6-2); the front part of the middle hood assembly (1) is provided with a front hinge seat (1-1), and the traction assembly (4) is hinged with the front hinge seat (1-1); the front end of the height adjusting connecting rod (17) is hinged with the traction component (4), and the rear end of the height adjusting connecting rod (17) is hinged with the middle wheel carrier (6).

3. A large foldable mowing apparatus with height adjustment function according to claim 2, wherein: the rear end of the height adjusting connecting rod (17) is hinged with the middle wheel carrier (6) through a connecting block, wherein the connecting block is hinged with the middle wheel carrier (6), and the height adjusting connecting rod (17) is connected with the connecting block through an adjustable nut.

4. A large foldable mowing apparatus with height adjustment according to any one of claims 1 to 3, wherein: the two ends of the folding oil cylinder (5) are respectively hinged with the middle hood assembly (1) and the side hood assembly (2), and the hinged position of the folding oil cylinder (5) and the middle hood assembly (1) or the side hood assembly (2) is connected through a long waist hole sliding structure.

5. A large foldable mowing apparatus with height adjustment according to claim 4, wherein: the side aircraft bonnet subassembly (2) on be equipped with and be used for with folding hydro-cylinder (5) articulated folding hydro-cylinder articulated seat (2-1) mutually, long waist hole sliding structure including locating waist shape hole (2-1 a) on folding hydro-cylinder articulated seat (2-1) and locating round pin axle (5-1 a) of folding hydro-cylinder (5) piston rod (5-1) tip, round pin axle (5-1 a) and waist shape hole (2-1 a) sliding fit.

6. A large foldable mowing apparatus with height adjustment according to claim 4, wherein: the transmission mechanism comprises a transfer case (11), a middle transmission shaft (12), a middle right-angle gear box (13), a side transmission shaft (14) and a side right-angle gear box (15), the transfer case (11) is installed on the middle hood assembly (1), the transfer case (11) is provided with an input shaft and three output shafts, the middle output shaft of the transfer case (11) is in transmission connection with the middle right-angle gear box (13) on the middle hood assembly (1) through the middle transmission shaft (12), and the middle right-angle gear box (13) is in transmission connection with a mowing mechanism at the bottom of the middle hood assembly (1); output shafts on two sides of the transfer case (11) are in transmission connection with side right-angle gear boxes (15) on corresponding side hood assemblies (2) through side transmission shafts (14), the side right-angle gear boxes (15) are in transmission connection with a mowing mechanism at the bottoms of the side hood assemblies (2), and the side transmission shafts (14) are universal telescopic transmission shafts.

7. A large foldable mowing apparatus with height adjustment according to claim 6, wherein: mowing mechanism for locate cutter head subassembly (19) of middle aircraft bonnet subassembly (1) and side aircraft bonnet subassembly (2) bottom, the side of middle aircraft bonnet subassembly (1) and side aircraft bonnet subassembly (2) still be equipped with and keep off grass curtain (18).

8. A large foldable mowing apparatus with height adjustment function according to claim 7, wherein: the traction assembly (4) is of a triangular structure, and a quick connector used for connecting a tractor is arranged at the front end of the traction assembly (4).

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