EP4697928A1

EP4697928A1 - A mowing.machine and a mowing mechanism

Info

Publication number: EP4697928A1
Application number: EP25724233.9A
Authority: EP
Inventors: Lubomír DVORÁK; Pavel VONDRÁCEK
Original assignee: Dvorak Svahove Sekacky sro
Current assignee: Dvorak Svahove Sekacky sro
Priority date: 2024-04-24
Filing date: 2025-03-24
Publication date: 2026-02-25
Also published as: WO2025223586A1

Abstract

The present invention relates to a mowing machine and a mowing device for machines for mowing, especially grass. The essence of the mowing machine consists in that at least one mowing mechanism is placed in the frame (18) of the mowing machine and that the inner shaft (14) of the mowing mechanism is fixed to said frame (18), wherein the mowing mechanism is provided with a drive shaft (2) and an inner shaft (14), while the drive shaft (2), on which the body (1) of the mowing mechanism is mounted, is connected to at least two connecting rods (4), a centering part (3) and a pinion (12), wherein the connecting rods (4) are connected to the lower blade (6) and the upper blade (7), which are slidably mounted on the rotary arms (8), which are connected to the body (1) of the mowing mechanism, and wherein the pinion (12) is in contact with the satellites (11) of the crown wheel (10), which are mutually connected by a carrier (13), said carrier (13) being firmly connected to the inner shaft (14). The essence of the mowing mechanism is that it is provided with a drive shaft (2) and an inner shaft (14), wherein the drive shaft (2), on which the body (1) of the mowing device is mounted, is connected to at least two connecting rods (4), a centering part (3) and a pinion (12), wherein the connecting rods (4) are connected to the lower blade (6) and the upper blade (7), which are slidably mounted on the rotary arms (8), which are connected to the body (1) of the mowing mechanism, and wherein the pinion (12) is in contact with the satellites (11) of the crown wheel (10), which are mutually connected by a carrier (13), said carrier (13) being firmly connected to the inner shaft (14).

Description

A mowing .machine and a mowing mechanism

Technical Field

The present invention relates to a mowing machine and a mowing mechanism for mowing machines for mowing, in particular grass material . The mowing machine and mowing mechanism can also be used for cutting bushes and hedges and in agricultural production, in particular in vegetable growing, orchards and vi ticulture .

Background Art

Almost every mower manufacturer supplies its mowers with a mowing mechanism of its own design and manufacture, or uses mowing mechanisms manufactured for general use by multiple mower manufacturers or specialized suppliers of mower accessories .

Various mowing machines and dif ferent mowing mechanisms are used for mowing, especially grass . For example, single-rotor or multi-rotor rotary mowing mechanisms , which are used in a number of variants , for example , single-rotor with freely floating blades . For the same purposes , mowing heads with plastic blades , string mowing heads , combined mower blades , counter-rotating mower blades , finger mower blades, disc rotary mechanisms, drum and spindle mowers, and other systems are also used.

The basic disadvantage of the above-mentioned mower s and mowing mechanisms is the high energy consumption of the drive due to high friction losses in the mower drums and mower rotors, and also the high consumption of string in string mower heads.

The mowing mechanisms of mowing machines often do not cut the grass. but only break it, the damaged stems turn yellow and dry out, which leads to a deterioration in the condition of the mowed grass area . Rotating parts, especially the blades of the mowing mechanisms, operate at high speeds, which causes the mowing machines to be noisy.

Mowing machines that operate at high speeds require demanding operator safety measures , as they are a source of bounced solid objects, most often stones

Moreover, these processes are often harmful to insects in the grass. The high speed of the rotating parts lifts insects from the substrate and often Injures or destroys them.

The mowing mechanisms of individual manufacturers are usually designed for a given specific device and cannot be used universally, let alone on machines from other manufacturers. Summary of the i nvention

The above-ment ioned problems of the prior art are eliminated by the solution according to the present invention, the subj ect of which lies in the fact that at least one mowing mechanism is placed in the frame of the mowing machine and that the inner shaft. of the mowing mechanism is f ixed to said frame, wherein the mowing mechanism is provided with a drive sha ft and an inner shaft, while the drive shaft, on which the body of the mowing mechanism is placed, is connected to at least two connecting rods , a centering part and a pinion, wherein the connect ing rods are connected to the lower blade and the upper blade, which are slidably mounted on the rotary arms , which are connected to the body of the mowing mechanism, and where the pinion is in contact with the satellites of the crown wheel , which are mutually connected by a carrier, said carrier being firmly connected to the inner shaf t .

Two or more mowing mechanisms can be mounted in the mowing machine frame using arms or a mowing arm

The inner shaft i s preferably fixed in the frame of the mowing machine by means of a friction clutch .

The drive shaft of the mowing mechanism, which is mounted in the frame of the mowing machine via at least one bearing , is connected to the engine by a gear .

The present invention also provides a mowing mechanism for mowing machines, which is provided with a drive shaf t and an inner shaft , wherein the drive shaf t, on which the mowing mechanism body is mounted, is connected to at least two connecting rods , a centering part and a pinion , where the connecting rods are connected to the lower blade and the upper blade, which are slidably mounted on the rotary arms , which are connected to the mowing mechanism body, and wherein the pinion is in contact with the satellites of the crown wheel, which are interconneeded by a carrier said carrier bei ng firmly connected to the inner shaft .

The inner shaft is mounted inside the drive shaft in the upper bear ing, and in the body of the mowing mechanism the inner shaft is mounted in a sliding case .

The connecting rods are connected to the lower blade and the upper blade by means of the drawbar, wherein the stone of the drawbar fits into the recesses of the lower blade and the upper blade .

The lower blade and the upper blade are connected- to the rotary arms by guide pins that pass through grooves and are fixed in the arms .

The guide pins are preferably provided with a cylindri cal shoulder which, by contacting the lower surface of the upper opening in the rotary arm, defines a clearance for sliding mounting of the upper blades on the lower blades and a clearance for sliding mounting of the lower blades on the rotary arm .

The drive shaft, centering part and both connecting rods are interconnected with the mowing mechanism body by an upper flange, which is equipped with lower bearings . The carrier with satellites and the pinion, which is mounted on the inner shaft, are enclosed in the mowing mechanism body by the lower flange .

Mowing and cutting using the rotating and oscillating counter- rotating movement of the mowing blades mounted in the mowing mechanism of the mowing machine according to the present invention ensures high - quality mowing of grass , cutting of bushes and hedges , including some work in agricultural production .

Thanks to the combined rotating and osci llating counter- rotating movement , the mowing blades actually mow and cut the material , the material i s not "broke" and torn apart .

The cut ends do not turn yellow and do not dry out , they are green and grow immediately a f ter treatment . The rotating movement of the mowing mechanism works at low speeds , so insects hidden in the grass material are not destroyed . Low speeds do not li ft insects from the substrate and the mowing blades do not destroy them

By ut il ising the rotat ing and oscillating counter-rotating motion of the mowing blades , there is no need for high peripheral speeds as with rotating blades only, which rather damage individual stems but do not mow . To cut the stem of grass according to the present invention, there is no need for high peripheral speeds on the blade edge as with rotary mowers , the proposed mowing mechanism mows mainly by oscillating counter-rotating motion of the mowing blades

The mowing machine or device is very quiet , in part thanks to its low speed . The power requirement of the mower motor is very low, so there is significant energy saving . In the case of a mower bar with a length of 800 mm, the power consumption is 500 W and the usable mowing t irrie is up to 10 hours per battery charge . The entire mewing device is des igned as universal, with the possibility of fitting it into various types of mowing machines , only with dimensional adj ustment of the drive shaft and inner shaft .

The solution according to the present invention cons iderably improves the sa fety of the operator of the mowing machine , because due to the low speed, solid obj ects , especially stones , are not expel led by the mowing machine outs ide the mowing area itself For this reason, there is no need to provide special , expensive technical safety measures .

The arrangement according to the invention enables easy rotation of the mowing blades around their longitudinal axis during servicing and thus the use of their double-sided grinding .

Brief Description of the Drawings

An exemplary embodiment of the invention is shown in the attached figures , where

Fig . 1 shows a schematic axonometric view of the mowing mechanism,

Fig - 2 shows a schematic view of the connecting rods and drawbars ensuring the recti linea r counter-rotating movement of the mowing blades and

Fig . 3 shows a schematic view of the planetary gears ensuring the rotary movement of the mowing blades , Fig . 4 shows the drive shaft assembly with connecting rods , pinion, centering part and mowing blade drawbars ,

Fig . 5 a shows a longitudinal section of the drive shaft and the centering part in an alternative where the drive shaft and the centering part are separate parts,

Fig . 5 b Shows a longitudinal section of the drive shaft and the centering part in an alternative where the drive shaft and the centering part are f ormed as one part ,

Fig . 6 shows the inner shaft with the carrier and satell ites a friction clutch and a lever for locking the carrier,

Fig . 7 shows a cross-section of the mowing mechanism,

Fig . 8 shows the lower and upper blades in front view,

Fig . 9 shows a cross-section of the blade a long the section l ine A-A from rig . 8 ,

Fig . 10 snows schematical ly one of the possible embodiments of the placement of the mowing mechanism in a mowing machine ,

Fig . 11 shows schematically one of the possible embodiments of the placement of the mowing mechanism in a mowing machine with a forward mowing mechanism,

Fig . 12 shows schematically one of the possible embodiments of the placement of the mowing mechanism on the arm of a trimmer Fig . 13 shows schematically one of the possible embodiments of the placement of the mowing mechanism in a mowi ng machine. which is a brush cutter .

Detailed Description of the invention

According to the present invention, a mowing machine and a mowing mechanism have been developed the essence of which lies in the combination of rotary and oscillating counter-rotat ing movement of the mowing blades of the mowing mechanism of the proposed machine . Both movements are derived from the drive of one shaft which is driven by the motor 19 of the mowing machine .

The inner shaft 14 of the mowing mechanism is fixed in the frame 18 of the mowing machine , wherein the mowing mechanism is provided with a drive shaft 2 and an inner shaf t 14 , while the drive shaft 2, on which the mowing mechanism body 3. is mounted, is connected to at least two connecting rods 4 , acentering part 3 and a pinion 12 , where the connecting rods 4 are connected to the lower blade. 6 and the upper blade 7 which are slidably mounted on the rotary a rms 8 , which are connected to the mowing mechanism body 1 , and wherein the pinion 12 is in contact with the satellites 11 of the crown wheel 10 , which are mutually connected by a carrier 13 , said carrier being firmly connected to the inner shaft 14 .

The inner shaft 14 is preferably fixed in the frame 18 of the mowing machine by means of a friction clutch 15 . The drive shaft 2 of the mowing mechanism, which is mounted in the f rame 18 of the mowing machine via at least one bearing 21 , is connected by a transmission 20 , preferably a bel t transmission, to the motor 19

The mowing machine 37 may be a lawnmower, brush cutter 35 , tractor 36 or s imilar device, and multiple mowing mechanisms may be mounted on one mowing machines 37 by means of an arm 33 or a mowing a rm 34 as shown schematically in Fig . 11 and Fig. 12 .

The subj ect of the invention lies in the combination of the rotary movement of the mowing blades 6, 7 and the cutting, which is ensured by the counter-rotating oscillating movement of the mowing blades 6, 7 along the s traight line . The rotary movement of the mowing blades 6 , 7 is derived from the drive of the drive shaft 2 , the carrier 13 , the planetary gear set , the body 1 and the rotary arm 8. The oscillating counter-rotating movement of the mowing blades 6 , 7 is derived from the drive of the drive shaft 2 the centering part 3 , the connecting rods 4 and the drawbars 5 . The drive of the drive sha ft 2 is ensured by the motor 19 of the mowing mechanism .

It is not important what kind of motor the mowing mechanism according to this invention will be powered by . It can be powe red by an electric motor with a cable connection to a socket , an electric motor with 3 battery drive, an internal combustion engine or a combination or other types of motors .

In an exemplary embodiment of the present invention, one size of the mowing mechanism is used with a cutting width of 800 mm a power input of 500 W, and a usable mowing time of up to 10 hours per battery charge. Low speeds of the mowing mechanism. are achieved by a transmission from the drive pulley 17 via the drive shaft 2. to the planetary gear formed by the pinion 12, the satellites 11, the carrier 13 to the crown wheel 10, which ensures the rotational movement of the mowing mechanism.. The speed range of the mowing mechanism ranges from 200 to 400 revolutions per minute

The site of the mowing mechanism can be easily adapted to the mowed or trimmed environment, i . e . the mowed area, hedge or specific dimensions of the bush, and the mowing mechan.i sm can be m a n u f a c t u r e d with different cutting widths and the mowing mechanism can be built into a suitable carrier, based solely on the knowledge of an ordinary field expert.

The torque from the motor 19 of the mowing mechanism is supplied via ths drive pulley 17 to the drive shaft 2.

The drive shaft 2 is mounted via bearings 21 in the mowing machine frame 18. The mowing mechanism body 1i s mounted via lower bearings 22 on the drive shaft 2. The inner shaft 14 is guided through the drive shaft 2, wh ich is formed as a machined tube.

The inner shaft 14 serves to mechanically secure the movement of the carrier 13. The inner shaft 14 is guided in the upper bearing 23, which is being mounted in the drive shaft 2, and in the mowing mechanism body 1, the inner shaft 14 is mounted in a sliding case 24, and is firmly connected to the carrier 13 of the satellites 11.

The fixed connection of the inner shaft 14 with the carrier 13 of the satellites 11 can be made by welding, by attaching to a groove and a tongue, by means of a splined shaft or by other known technical measures. The carrier 13 is secured by means of an inner shaft 14 and a friction clutch 15 , located at the upper end of the inner shaft 14 , by a lever 16, which is anchored to the frame 18 of the mowing machine . The friction clutch 15 ensures the safety of the device especially in the event of increased resistance on the carrier 13 or on the pinion 12 , the clutch slips and prevents damage to parts of the mowing mechanism.

The frict ion clutch 15 can be replaced by another technical measure with the possibi lity of slipping under excessive load, but it does not have to be installed in the machine , because even wi thout the said technical measure, the mowing mechanism per forms all the above functions wi thout restrictions .

The body 1 of the mowing mechanism covers, protects and serves to accommodate the mowing mechanism drive , which consis ts of a centering part 3 , connecting rods 4 and drawbars 5 of both pai rs of lower blades 6 and upper blades 7 . The lower blades 6 and upper blades 7 are identical , only placed opposite each other so that the stones 25 of the drawbars 5 fit into the recesses 31 in the upper blade 7 and lower blade 6 .

The lower blades 6 and the upper blades in the exemplary embodiment, are made of Hardox type steel . The thickness of the blades is variable according to their length, but in the exemplary embodiment, when the cutting bar reaches a length of 800 mm, the thickness of the blades is 3 mm .

The sharpening angle of the cutting edge of both blades is about 45 ° , as can be seen from Fig 7 . At the ends of the drawbars 5 , stones 25 of unequal length are formed, which balance the height of the connecting rods 4 .

The stones 25 are inserted into the holes in the connecting reds 4 and into the recesses 31 of the lower blades 6 and the upper blades 7.

The rotational movement of the 1 owe r blades 6 and the upper blades 7 is derived from a planetary gear, which consis ts of a pinion 12 , which is mounted on the drive shaft 2 and transmits the rotational movement by means of satellites 11 , mounted on a carrier 13 , to a gear crown wheel 10 formed with internal gearing in the body 1 of mowing mechanism . The cantilevered body 1 of the mowing mechanism rotates together with the rotary arms 8 attached to the body 1 and the lower blades 6. and upper blades 7 , whi c h are slidably mounted on said arms .

The lower mowing blades 6. and the upper mowing blades 7 have double-sided edges . I f one side of the edge of either the lower mowing blades 6 or the upper mowing blades 7 becomes blunt , the blades can simply be disconnec ted from the drawbars 5 and the blunt blades are replaced with sharp ones

The blades are replaced by sliding the stones 25 of the drawbars 5 out of the holes 27 of the connecting rods 4 and out of the recesses 31 of the lower blades 6. or the upper blades 7 and af ter releasing the guide pins 9 from the grooves 26 of the lower blades 6 and the upper blades and after releasing the screw connection with the rotary arm 8 . After that , it is possible to turn the blades 180 ° around their longitudinal axis , or to replace the lower blades 6 with ths upper blades 7 or to replace the blades completely and continue mowing with a sharp blade . The lower blade 6 and the upper blade 7 slide on the rotary arm 8 , the rotary arm 8 being the s ame length as the distance from the vertical axis of the mowing mechanism to the end of the mowing blade at the moment of maximum extension of the upper blade The lower blade 6. and the upper blade 7 are guided and locked agains t each other on the rota ry arm 8 by means of guide pins 9 . The guide pins 9 pass through grooves 26 in the lower blade 6 and the upper blade 7 and are further screwed into threaded holes 30 in the rotary arm. 8 so as to al low oscillating movement of the upper blade 7 and the lower blade 6 along each other and of the 1 owe r blade 6 along the rotary arm 8., as can be seen from Fig 6.

The clearance required for the movement of the upper blade 7 and the lower blade 6 along each other and of the lower blade y along the rotary arm 8 is given by the cyl indri cal shoulder 32 of the guide pin 9. The cylindrical shoulder 32 of the guide pin 9 abuts the lower surface of the upper hole in the rotary arm 8 , and the contact thus defined which is realized by screwing the lower part of the guide pin 9 into the threaded holes 30 of the rotary arm 8 , determines such clearance between the lower blade 6 and the upper blade 7 and between the lower blade 6 and the rotary arm 8 , so that these parts slide smoothly over each other . The friction surfaces of the lower blade y and the upper blade 7, as wel l as the friction surf aces of the lower blade 6 along the rotary arm 8 , are not lubricated .

The rectil inear counter-rotating movement of the lower blade 6 and the upper blade is ensured by the centering part 3 screwed onto the drive shaf t 9 as can be seen in Fig 5a, or the centering part 3 may be an integral part of the drive shaft 2 , as shown in Fig . 5 b The connecting rods 4 also participate in the rectilinear counter- rotating movement of the lower blade 6 and the upper blade 7 , said connecting rods being only inserted between the parts of the centering part 3 and through the connection of the connecting rods 4 with the mowing blades 6 , 7 by means of the drawbar 5.

The rotary movement of the mowing blades is derived from the planetary gear located in the body 1 of the mowing mechanism . The planetary gear consists of a pin ion 12 mounted on the drive shaf t 2 , the rotary movement of the pinion 12 being transmitted by means of satell 11 to the gear crown wheel 10 farmed m the body 1 of the mowing mechani sm .

The body 1 of the mowing mechanism, together with the drawbars 5 and the rotary arms 8 rotates the lower blade 6 and the upper blade 7

The assembly of the mowing me chan ism is carried out in the following manner . The drawbars 5 are inserted into the holes in the peripheral shell of the body 1 , the connecting rods 4 are pushed onto the centering part 3 and the drive shaft 2 is screwed on , as shown in Fig 4 ,

Fig . 5a and Fig . 5b . The resulting assembly group consisting of the drive shaft 2, both centering parts 3 and both connecting rods 4 is inserted into the center of the body 1 and the individual connecting rods 4 are pushed onto the stones 25 of both drawbars 5

The assembly group consisting of the drive shaft 2 , the centering parts 3 , or the dr ive shaft 2 wh i ch forms a single part with the centering part 3 and both connecting rods 4 , is secured in the body 1 by means of the upper flange 28 with the lower bearings 22 . The pinion 12 is put on the lower part of the drive shaft 2 . The planetary gear consisting of the carrier 13 , the satellites 11 and the inner shaft 14 is assembled separately . The planetary gear thus assembled is inserted between the pinion 12 and the crown wheel 10 . The body 1. is enclosed with the lower flange 29. The arms 8 are mounted on the body 1 . The lower blades 6 and the upper blades 7 are mounted on the rotary a rms 8 and secured by screwing the guide pins 9 into the threaded holes 30 in the rota ry arms 8 . The drawbars 5 are fitted into the grooves of the lower blades 6 and the upper blades 7 .

The entire assembled unit is inserted into the upper bearings 23 located .in the mowing machine frame 18 . The drive pulley 17 i s fitted onto the dr i ve shaft 2 . The friction clutch 15 is fitted onto the inner shaft 14 and the lever 16 is secured to the mowing machine frame 18 .

Industrial _Applicabilit y

The mowing machine and mowing mechanism; according to the present invention is advantageously usable as a garden machinery machine and in similar devices and is designed as universal with the poss ibil ity of use in various designs of mowers and various manufacturers

The mowing mechani sm according to the present invent ion is particularly applicable to lawn mowers , brush cutters , or a mowing arm, at special structure designed and manufactured for the object or envi ronment being cut or trimmed . It can be used for cutting grass , for trimming bushes and hedges , and in agricultural production, especially in vegetable growing, orchards , and viticulture . List of reference signs

1 Body

Drive shaf t

3 Centering part

4 Connecting rod

5 Drawbar

6 Lower blade

7 Upper blade g Rotary arm

9 Guide pin

10 Crown wheel

11 Satellite

12 Pinion

13 Carrier

14 Inner shaft

15 Friction clutch

16 Lever

17 Drive pul ley

18 Frame

19 Motor

20 Transmission

21 Bearing

22 Lower bearing

23 Upper bearing

24 Sliding case

25 Stone 26 Groove

27 Hole

28 Upper f lange

29 Lower flange

30 Threaded holes

31 Recess

32 Cyl inder shoul der

33 Arm.

34 Mowing arm

35 Brush cutter

36 Tractor

37 Mowing machine

Claims

1. A mowing machine, characterized in that at least one mowing mechanism is mounted in the frame (18) or the mowing machine and that an inner shaft (14) of the mowing mechanism is fixed to said frame (18) , wherein the mowing mechanism is provided with a drive shaft (2) and an inner shaft (14) wherein the drive shaft (2) , on which the body (1) of the mowing mechanism. is mounted, is connected to at least two connecting rods (4 ) , a centering part (3) and a pinion (12) , wherein the connecting rods (4) are connected to the lower blade (6) and the upper blade (7), which are slidably mounted on the rotary arms (8) , which are connected to the body (1) of the mowing mechanism, and wherein the pinion (12) is in contact with the satellites (11) of the crown wheel (10) , wh ich are mutual ly connected by a carrier (13), said carrier (13) being f i rml y connected to the inner shaft (14) .

2. A mowing machine according to claim 1, character! zed in that two or more mowing mechanisms are mounted in the frame (18) of the mowing machine -by means of ams (33) or a mowing arm (34) .

3. A mowing machine according to claim 1, characterized in that the inner shaft (14) is fixed in the frame (18) of the mowing machine by means of a friction clutch (15) .

4. A mowing machine according to claim 1, characterized in that the drive shaft (2) of the mowing mechanism, which is mounted in the frame (18) of the mowing machine via at least one bearing (21) , is connected to the motor (19) by a transmission (20) .

5. A mowing mechanism, characterised in that it is provided with a drive shaft (2) and an inner shaft (14), wherein the drive shaft (2) on which the body (1) of the mowing mechanism is mounted, is connected to at least two connecting rods (4) , a centering part (3) and a pinion (12) , wherein the connecting rods (4) are connected to a lower blade (6) and an upper blade (7) , wh ioh are s 1 i dab 1 y mounted on rotary arms (8) , which are connected to the body (1) of the mowing mechanism, and wherein the pinion (12) is in contact with the satellites (11) of the crown wheel (10) , which are mutually connected by a carrier (13) , said car rier (13) being' firmly connected to the inner shaft (14) .

6 A mowing mechanism according to claim 5 , characterized in that the inner shaft. (14) is mounted inside the drive shaft (2) in the upper bearing (23 ) , and that in the body (1) o f the mowing mechanism the inner shaft (14) is mounted, in a sliding case (24) .

7. A mowing mechanism according to claim 5, characterized in that the connecting rods (4) are connected to the lower blade (6) and the upper blade (7) by a drawbar (5) wherein the stone (25) of the drawbar (5) fits into the recess (31) of the lower blade (6) and the upper blade (7) .

8. A mowing mechanism according to claim 5, characterized in that the lower blade (6) and the upper blade (7) are connected to the rotary arms (8) by guide pins (9) which pass through grooves (26) and are fixed in the arms (8) .

9. A mowing mechanism according to claim 8, characterized in that. the guide pins (9) are provided with a cylindrical shoulder (32) , which. by contact with the lower surface of the upper opening in the rotary arm { 8 ) , defines a clearance for sliding mounting of the upper blades (7) on the lower blades (6) and a clearance f or sliding mount ing of the 1 owe r blades (6) an the rotary arm (8) .

10 A mowing mechanism according to claim 5, characterized in that the drive shaft (2) , the centering part (3) , and both connecting rods (4) are mutually connected to the body (1) of the mowing mechanism by an upper flange (28) , which is provided with lower bearings (22) .

11. A mowing mechanism according to claim 5, characterized in that the carrier (13) with the satellites (11) and the pinion (12) , which is mounted on the inner shaft (14 ) , are enclosed in the body (1) of the mowing mechanism by the lower flange (29) .