CN216218799U

CN216218799U - Front mower of tractor

Info

Publication number: CN216218799U
Application number: CN202122858235.2U
Authority: CN
Inventors: 田启春; 王志永
Original assignee: Changzhou Kafute Machinery Co ltd
Current assignee: Changzhou Kafute Machinery Co ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-04-08
Anticipated expiration: 2031-11-19

Abstract

The utility model relates to a leading lawn mower of tractor belongs to the technical field of lawn mower, and it includes the lawn mower casing, be equipped with the mechanism of mowing in the lawn mower casing, be equipped with actuating mechanism on the lawn mower casing, actuating mechanism is connected with the mechanism of mowing, the afterbody of lawn mower casing is equipped with two sets of suspension mechanism, suspension mechanism is connected with the draft arm of tractor front end. The application has the effect of being convenient for observe the operation.

Description

Front mower of tractor

Technical Field

The application relates to the field of mowers, in particular to a front-mounted mower of a tractor.

Background

The mower is a mechanical tool for trimming lawn, vegetation and the like, and mainly comprises a cutter head, an engine, traveling wheels, a traveling mechanism, blades and a control part. The lawn mower is widely applied to the field of weeding on roads, farms, gardens and the like, and provides power through the engine to automatically trim lawns and vegetations, so that the operation time of weeders is reduced, and a large amount of human resources are saved.

The lawn mower is generally detachably mounted on an agricultural tractor by adopting a suspension type mounting method, most of the existing agricultural lawn mowers are of a rear suspension type, and an operator needs to frequently return to observe and adjust the position of a mowing disc during operation, so that the existing agricultural lawn mowers are inconvenient.

SUMMERY OF THE UTILITY MODEL

In order to facilitate viewing operations, the present application provides a tractor front mower.

The application provides a leading lawn mower of tractor adopts following technical scheme:

a mower with a front-mounted tractor comprises a mower shell, wherein a mowing mechanism is arranged in the mower shell, a driving mechanism is arranged on the mower shell and connected with the mowing mechanism, two groups of hanging mechanisms are arranged at the tail of the mower shell and connected with a traction arm at the front end of the tractor.

By adopting the technical scheme, the driving mechanism is started and drives the mowing mechanism to operate. When the tractor moves, the traction arm drives the suspension mechanism to move, so that the mower shell is driven to move. In the moving process of the mower shell, the mowing mechanism trims lawn vegetation growing in a passing area, so that the aims of mowing and weeding are fulfilled. Through setting up the lawn mower casing in the front end of tractor, need not constantly to turn back the adjustment direction of advance, the observation operation of the operative employee of being convenient for.

Optionally, the suspension mechanism comprises two suspension plates and two suspension pins, the two suspension plates are arranged at the tail part of the mower shell, the two suspension pins penetrate between the two suspension plates, and the suspension pins are rotatably connected with one ends, far away from the tractor, of the traction arms.

Through adopting above-mentioned technical scheme, hang the round pin and couple together the trailing arm with hang the board, when the lawn mower casing was demolishd to needs, only need follow and hang the round pin of taking off on the board, can make the trailing arm and the completion of lawn mower casing break away from, make things convenient for the loading and unloading of lawn mower casing.

Optionally, two wear to be equipped with the offset between the board that hangs, the outside cover of offset is equipped with hangs nylon, it locates between two boards that hang to hang nylon, hang nylon and locate the top of trailing arm and with the top surface butt of trailing arm.

By adopting the technical scheme, when the traction arm is lifted upwards, the mower shell can be lifted conveniently; in addition, in the moving process of the mower shell, the traction arm is abutted to the suspension nylon, and the suspension nylon has good elasticity, so that the mower shell can float up and down in a small range, and the mowing effect is improved.

Optionally, walking wheels are arranged on two sides of the front end of the mower shell, height adjusting mechanisms are arranged on the walking wheels, and the height adjusting mechanisms are connected with the front end of the mower shell.

Through adopting above-mentioned technical scheme, the walking wheel is convenient for mow the removal of during operation lawn mower casing, and height adjustment mechanism can adjust the height of lawn mower casing apart from ground, and then adjusts the height of mowing, has improved lawn mower's suitability.

Optionally, the altitude mixture control structure includes spacer and connecting axle, the bottom of connecting axle is equipped with the link, the link rotates with the rotation center of walking wheel to be connected, the front end of lawn mower casing is equipped with the hanging beam, the one end fixed connection of lawn mower casing is kept away from with the hanging beam to the lateral wall of spacer, the outside of connecting axle is located to spacer and adjustment gasket sleeve cover, the top and the below of spacer are equipped with a plurality of adjustment gasket, the outside of connecting axle is located to spacer and adjustment gasket sleeve cover, the lateral wall top of connecting axle is inserted and is equipped with the fixed pin, the bottom of fixed pin and the top butt of the adjustment gasket of the top.

By adopting the technical scheme, when the height of the shell of the mower is adjusted, the fixing pin is firstly removed, the connecting shaft is pulled out of the spacer bush, the adjusting washer positioned below the spacer bush is adjusted according to the actual mowing height, and the adjusting washer above the spacer bush is adaptively adjusted, so that the purpose of adjusting the mowing height can be achieved.

Optionally, the mowing mechanism includes a cutter shaft and a plurality of blades, the cutter shaft is rotatably connected to a side wall of the mower housing, the blades are disposed on the cutter shaft, the plurality of blades are circumferentially disposed along the cutter shaft, a plurality of groups of blades are disposed along a length direction of the cutter shaft, and an end portion of the cutter shaft penetrates through the side wall of the mower housing and is connected to the driving mechanism.

By adopting the technical scheme, when the driving mechanism is started, the cutter shaft is driven to rotate, and the cutter shaft drives the blade to rotate. The blade is rotated to trim lawn vegetation, so that the aims of mowing and weeding are fulfilled.

Optionally, actuating mechanism includes gear box and driveshaft tube, the gear box is installed on the lawn mower casing, the external tractor's of input power supply of gear box, the output and the driveshaft tube coaxial fastening of gear box, the one end that the gearbox was kept away from to the driveshaft tube is worn out the lateral wall of lawn mower casing and is equipped with the action wheel, the action wheel is connected with from the driving wheel through the belt, follow the coaxial fastening of one end that driving wheel and arbor are close to the action wheel.

Through adopting above-mentioned technical scheme, when the power supply of tractor started, drive the gear box operation, the gear box drives the driveshaft tube and rotates, and the driveshaft tube drives the action wheel and rotates, and the action wheel drives from the driving wheel rotation, drives the arbor rotation from the driving wheel to realize the rotatory purpose of blade.

Optionally, be equipped with the take-up pulley between action wheel and the follow driving wheel, the take-up pulley is located the belt outside and contradicts with the belt, mower housing is equipped with the tensioning adjusting part who is used for adjusting the take-up pulley towards one side of take-up pulley.

Through adopting above-mentioned technical scheme, at the in-process that the lawn mower used for a long time, the belt can stretch gradually, carries out the tensioning through the tensioning wheel to the belt, improves the transmission efficiency of belt.

Optionally, the tensioning adjusting assembly includes a tensioning connecting plate, a tensioning spring and a tensioning bolt, the lower end of the tensioning connecting plate is rotatably connected with the side wall of the mower housing, the upper end of the tensioning connecting plate is connected with one end of the tensioning spring, the other end of the tensioning spring is fixedly connected with the tensioning bolt, the tensioning wheel is rotatably connected to one side of the tensioning connecting plate away from the mower housing, an ear plate is arranged on one side of the mower housing, which faces the tensioning wheel, the tensioning bolt penetrates out of the ear plate, a tensioning nut matched with the tensioning bolt is arranged on the outer side of the tensioning bolt, and one end of the tensioning nut, which faces the tensioning spring, is abutted against one side of the ear plate, which is away from the tensioning spring.

Through adopting above-mentioned technical scheme, the tensioning bolt is used for adjusting the tensioning degree of tensioning spring, when the tensioning wheel tensioning degree is not enough, adjusts the tensioning bolt for the tensioning bolt is kept away from the tensioning spring and is removed the setting back and screw up the tensioning nut, and the tensioning degree of tensioning spring improves this moment, and the tensioning effect of the tensioning wheel on the tensioning connecting plate to the belt also improves thereupon, the operation of the tensioning regulation of being convenient for.

Optionally, the bottom of the front end of the mower housing is provided with an anti-collision beam, and the anti-collision beam is arranged between the two travelling wheels.

Through adopting above-mentioned technical scheme, at the lawn mower casing in-process of marcing, the anticollision roof beam can push away barriers such as subaerial stone, reduces the barrier and leads to the fact the collision to the lawn mower casing to improve the life of lawn mower casing.

In summary, the present application includes at least one of the following beneficial technical effects:

the mower shell is arranged at the front end of the tractor, so that the moving direction does not need to be adjusted by continuously returning, and observation and operation of an operator are facilitated;

through the arrangement of the height adjusting mechanism, the height of the shell of the mower from the ground can be adjusted, so that the mowing height can be adjusted, and the applicability of the mower is improved;

in the process of using the lawn mower for a long time, the belt can be gradually stretched, and the belt is tensioned through the tensioning wheel, so that the transmission efficiency of the belt is improved.

Drawings

Fig. 1 is a schematic overall structure diagram embodying an embodiment of the present application.

Fig. 2 is a schematic structural view of a mowing mechanism embodying an embodiment of the present application.

Fig. 3 is a partially enlarged schematic view at a in fig. 1.

Fig. 4 is a partially enlarged schematic view at B in fig. 2.

Description of reference numerals: 1. a mower housing; 11. a traveling wheel; 12. a suspension beam; 13. an ear plate; 14. an anti-collision beam; 15. a grass baffle; 2. a mowing mechanism; 21. a cutter shaft; 22. a blade; 3. a drive mechanism; 31. a gear case; 32. a driving shaft tube; 33. a driving wheel; 34. a belt; 35. a driven wheel; 4. a suspension mechanism; 41. a suspension plate; 42. a suspension pin; 43. a contact pin; 44. hanging nylon; 5. a traction arm; 6. a height adjustment mechanism; 61. a spacer sleeve; 611. a nozzle tip; 62. a connecting shaft; 621. a fixing pin; 63. a connecting frame; 64. an adjusting washer; 7. a tension wheel; 71. a tension adjustment assembly; 711. tensioning the connecting plate; 712. tensioning the spring; 713. tensioning the bolt; 714. and tensioning the nut.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses leading lawn mower of tractor. Referring to fig. 1 and 2, the tractor front mower comprises a mower housing 1, a mowing mechanism 2 is arranged in the mower housing 1, a driving mechanism 3 is arranged on the mower housing 1, the driving mechanism 3 is connected with the mowing mechanism 2, two groups of suspension mechanisms 4 are arranged at the tail of the mower housing 1, and the suspension mechanisms 4 are connected with a traction arm 5 at the front end of a tractor.

When the mower is used, the driving mechanism 3 is started, and the driving mechanism 3 drives the mowing mechanism 2 to operate. The tractor is driven, so that the traction arm 5 of the tractor drives the suspension mechanism 4 to move, and the suspension mechanism 4 drives the mower shell 1 to move. In the moving process of the mower shell 1, the mowing mechanism 2 trims lawn vegetation growing in a passing area, so that the aims of mowing and weeding are fulfilled. Through setting up lawn mower casing 1 in the front end of tractor, need not constantly to turn back the adjustment direction of advance, the observation operation of the operative employee of being convenient for.

Referring to fig. 1, the suspension mechanism 4 includes two suspension plates 41 and two suspension pins 42, the two suspension plates 41 are fixedly connected to the tail portion of the mower housing 1, the suspension pins 42 are inserted between the two suspension plates 41, and the suspension pins 42 are rotatably connected to one end of the towing arm 5 away from the tractor. Therefore, the suspension pin 42 connects the traction arm 5 and the suspension plate 41, and when the mower housing 1 needs to be detached, the traction arm 5 can be separated from the mower housing 1 only by taking down the suspension pin 42 from the suspension plate 41, so that the mower housing 1 can be conveniently detached.

Referring to fig. 1, a contact pin 43 penetrates between two suspension plates 41, a suspension nylon 44 is sleeved outside the contact pin 43, the suspension nylon 44 is arranged between the two suspension plates 41, and the suspension nylon 44 is arranged above the draft arm 5 and contacts with the top surface of the draft arm 5. Thus, when the traction arm 5 is lifted upwards, the mower housing 1 can be lifted; in addition, during the moving process of the mower housing 1, the traction arm 5 is abutted against the suspension nylon 44, and the suspension nylon 44 has good elasticity, so that the mower housing 1 has small-range up-and-down floating, and the mowing effect is improved.

Referring to fig. 1 and 3, in order to facilitate movement of the mower housing 1 during mowing, both sides of the front end of the mower housing 1 are provided with road wheels 11. The walking wheel 11 is provided with a height adjusting mechanism 6, the height adjusting mechanism 6 comprises a spacer 61 and a connecting shaft 62, the bottom end of the connecting shaft 62 is fixedly connected with a connecting frame 63, and the rotating center of the walking wheel 11 is rotatably connected with the side wall of the connecting frame 63. The front end of the mower housing 1 is fixedly connected with a suspension beam 12, the side wall of a spacer 61 is fixedly connected with one end, far away from the mower housing 1, of the suspension beam 12, a plurality of adjusting washers 64 are arranged above and below the spacer 61, and the spacer 61 and the adjusting washers 64 are sleeved on the outer side of the connecting shaft 62. A fixing pin 621 is inserted into the top end of the side wall of the connecting shaft 62, and the bottom end of the fixing pin 621 abuts against the top end of the uppermost adjusting washer 64, and it should be noted that the sum of the number of the upper and lower adjusting washers 64 is always kept the same before and after the height adjustment. The oil nozzle 611 is fixedly connected to the outer side of the spacer 61, and the oil nozzle 611 is communicated with the inner wall of the spacer 61, so that lubricating oil can be dripped into the inner wall of the spacer 61 through the oil nozzle 611, friction between the spacer 61 and the connecting shaft 62 is reduced, damage to the spacer 61 and the connecting shaft 62 is reduced, and the service life of the spacer is prolonged.

When the height of the mower housing 1 needs to be adjusted, the fixing pin 621 is firstly removed, the connecting shaft 62 is pulled out from the spacer 61, the adjusting washer 64 positioned below the spacer 61 is adjusted according to the actual mowing height, and the adjusting washer 64 positioned above the spacer 61 is adaptively adjusted accordingly, so that the purpose of adjusting the mowing height can be achieved, and the applicability of the mower is improved. That is, if one adjusting washer 64 below the spacer 61 needs to be removed, the adjusting washer 64 above the spacer 61 needs to be added for compensation, so as to ensure that the bottom end of the fixing pin 621 is in contact with the top end of the uppermost adjusting washer 64, thereby reducing the occurrence of vertical sliding of the spacer 61 due to the absence of the upper adjusting washer 64.

Referring to fig. 1 and 2, the driving mechanism 3 includes a gear box 31 and a driving shaft tube 32, the gear box 31 is mounted on the mower housing 1, an input end of the gear box 31 is externally connected to a power source of a tractor, an output end of the gear box 31 is coaxially fixed with the driving shaft tube 32, and an end of the driving shaft tube 32, which is far away from the gear box 31, penetrates through a side wall of the mower housing 1 and is coaxially fixed with a driving wheel 33. The driving pulley 33 is connected to a driven pulley 35 via a belt 34, and the driven pulley 35 is connected to the mowing mechanism 2.

Referring to fig. 2, the mowing mechanism 2 includes a cutter shaft 21 and blades 22, the cutter shaft 21 is rotatably connected to a side wall of the mower housing 1, the blades 22 are fixedly connected to the cutter shaft 21, the blades 22 are provided in plural in a circumferential direction of the cutter shaft 21, plural groups of the blades 22 are provided in a length direction of the cutter shaft 21, and an end portion of the cutter shaft 21 near the driven wheel 35 penetrates through the side wall of the mower housing 1 and is coaxially fixed to the driven wheel 35.

Referring to fig. 1 and 2, when the power source of the tractor is started, the gear box 31 is driven to operate, the gear box 31 drives the driving shaft tube 32 to rotate, the driving shaft tube 32 drives the driving wheel 33 to rotate, the driving wheel 33 drives the driven wheel 35 to rotate, the driven wheel 35 drives the cutter shaft 21 to rotate, and the cutter shaft 21 drives the blade 22 to rotate. The blade 22 rotates to trim lawn vegetation, and the aims of mowing and weeding are achieved.

Referring to fig. 2 and 4, a tension pulley 7 is installed between the driving pulley 33 and the driven pulley 35, the tension pulley 7 is located outside the belt 34 and abuts against the belt 34, and a tension adjusting assembly 71 for adjusting the tension pulley 7 is provided on a side of the mower housing 1 facing the tension pulley 7. The tensioning adjusting assembly 71 comprises a tensioning connecting plate 711, a tensioning spring 712 and a tensioning bolt 713, wherein the lower end of the tensioning connecting plate 711 is rotatably connected with the side wall of the mower housing 1, the upper end of the tensioning connecting plate 711 is connected with one end of the tensioning spring 712, the other end of the tensioning spring 712 is fixedly connected with the tensioning bolt 713, the tensioning wheel 7 is rotatably connected with one side of the tensioning connecting plate 711 far away from the mower housing 1, one side of the mower housing 1 facing the tensioning wheel 7 is fixedly connected with an ear plate 13, the tensioning bolt 713 penetrates through the ear plate 13, a tensioning nut 714 matched with the tensioning bolt 713 is sleeved on the outer side of the tensioning bolt 713, and one end of the tensioning nut 714 facing the tensioning spring 712 is abutted against one side of the ear plate 13 far away from the tensioning spring 712.

During the long-term use of the mower, the belt 34 is gradually stretched, and the belt 34 is tensioned by the tensioning wheel 7, so that the conveying efficiency of the belt 34 can be improved. When the tensioning degree of the tensioning wheel 7 is insufficient, the tensioning bolt 713 is adjusted, so that the tensioning bolt 713 is arranged away from the tensioning spring 712 in a moving way, and then the tensioning nut 714 is tightened, at this moment, the tensioning degree of the tensioning spring 712 is improved, and the tensioning effect of the tensioning wheel 7 on the tensioning connecting plate 711 on the belt 34 is improved, thereby facilitating the operation of tensioning adjustment.

Referring to fig. 1, an anti-collision beam 14 is fixedly connected to the bottom of the front end of the mower housing 1, and the anti-collision beam 14 is arranged between two traveling wheels 11. In this way, the impact beam 14 can push away obstacles such as stones on the ground during the traveling of the mower housing 1, so that the impact of the obstacles on the mower housing 1 is reduced, and the service life of the mower housing 1 is prolonged.

Referring to fig. 2, in order to reduce the occurrence of the phenomenon that the grass clippings fly around in the mowing process, the grass blocking plates 15 are fixedly connected to the bottom of the front end and the bottom of the tail end of the mower housing 1, the length direction of the grass blocking plates 15 is consistent with the length direction of the cutter shaft 21, the grass blocking plates 15 are made of wear-resistant rubber, and the wear of the grass blocking plates 15 can be reduced in the advancing process.

The implementation principle of the leading lawn mower of tractor of this application embodiment does: when the mower is used, a power source of an externally connected tractor is started to drive the gear box 31 to operate, the gear box 31 drives the driving shaft pipe 32 to rotate, the driving shaft pipe 32 drives the driving wheel 33 to rotate, the driving wheel 33 drives the driven wheel 35 to rotate, the driven wheel 35 drives the cutter shaft 21 to rotate, and the cutter shaft 21 drives the blade 22 to rotate. During the movement of the mower housing 1, the rotating blade 22 trims lawn vegetation growing in the passing area, thereby achieving the purpose of mowing and weeding. Through setting up lawn mower casing 1 in the front end of tractor, need not constantly to turn back the adjustment direction of advance, the observation operation of the operative employee of being convenient for.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a leading lawn mower of tractor, includes lawn mower casing (1), be equipped with mowing mechanism (2) in lawn mower casing (1), be equipped with actuating mechanism (3) on lawn mower casing (1), actuating mechanism (3) are connected its characterized in that with mowing mechanism (2): the tail of the mower shell (1) is provided with two groups of suspension mechanisms (4), and the suspension mechanisms (4) are connected with a traction arm (5) at the front end of a tractor.

2. A tractor front mower as claimed in claim 1 wherein: the suspension mechanism (4) comprises two suspension plates (41) and two suspension pins (42), the two suspension plates (41) are arranged at the tail part of the mower shell (1), the suspension pins (42) are arranged between the two suspension plates (41) in a penetrating mode, and the suspension pins (42) are rotatably connected with one ends, far away from the tractor, of the traction arms (5).

3. A tractor front mower as claimed in claim 2 wherein: two wear to be equipped with between suspension plate (41) and offset pin (43), the outside cover of offset pin (43) is equipped with hangs nylon (44), hang nylon (44) and locate two suspension plate (41) between, hang nylon (44) locate the top of trailing arm (5) and with the top surface butt of trailing arm (5).

4. A tractor front mower as claimed in claim 1 wherein: the front end both sides of lawn mower casing (1) all are equipped with walking wheel (11), be equipped with height adjusting mechanism (6) on walking wheel (11), height adjusting mechanism (6) are connected with the front end of lawn mower casing (1).

5. A tractor front mower as claimed in claim 4 wherein: the height adjusting structure comprises a spacer bush (61) and a connecting shaft (62), the bottom end of the connecting shaft (62) is provided with a connecting frame (63), the connecting frame (63) is rotationally connected with the rotating center of the walking wheel (11), the front end of the mower shell (1) is provided with a suspension beam (12), the side wall of the spacer bush (61) is fixedly connected with one end of the suspension beam (12) far away from the mower shell (1), the spacer bush (61) and the adjusting washer (64) are sleeved outside the connecting shaft (62), a plurality of adjusting washers (64) are arranged above and below the spacer bush (61), the spacer bush (61) and the adjusting washer (64) are sleeved outside the connecting shaft (62), a fixing pin (621) is inserted at the top end of the side wall of the connecting shaft (62), and the bottom end of the fixing pin (621) is abutted to the top end of the uppermost adjusting washer (64).

6. A tractor front mower as claimed in claim 1 wherein: the mowing mechanism (2) comprises a cutter shaft (21) and blades (22), the cutter shaft (21) is rotatably connected with the side wall of the mower shell (1), the blades (22) are arranged on the cutter shaft (21), a plurality of blades (22) are arranged along the circumferential direction of the cutter shaft (21), a plurality of groups of blades (22) are arranged along the length direction of the cutter shaft (21), and one end part of the cutter shaft (21) penetrates out of the side wall of the mower shell (1) and is connected with the driving mechanism (3).

7. A tractor front mower as claimed in claim 6 wherein: actuating mechanism (3) include gear box (31) and driveshaft tube (32), install on lawn mower casing (1) gear box (31), the power supply of the external tractor of input of gear box (31), the output and driveshaft tube (32) coaxial fastening of gear box (31), the lateral wall of lawn mower casing (1) is worn out and is equipped with action wheel (33) to the one end that gearbox (31) were kept away from in driveshaft tube (32), action wheel (33) are connected with from driving wheel (35) through belt (34), follow one end coaxial fastening that driving wheel (33) are close to in driving wheel (35) and arbor (21).

8. A tractor front mower as claimed in claim 7 wherein: be equipped with take-up pulley (7) between action wheel (33) and follow driving wheel (35), take-up pulley (7) are located belt (34) outside and contradict with belt (34), lawn mower casing (1) is equipped with tensioning adjusting part (71) that are used for adjusting take-up pulley (7) towards one side of take-up pulley (7).

9. A tractor front mower as claimed in claim 8 wherein: the tension adjustment assembly (71) comprises a tension connection plate (711), a tension spring (712) and a tension bolt (713), the lower end of the tensioning connecting plate (711) is rotationally connected with the side wall of the mower shell (1), the upper end of the tension connecting plate (711) is connected with one end of a tension spring (712), the other end of the tension spring (712) is fixedly connected with a tension bolt (713), the tensioning wheel (7) is rotatably connected to one side of the tensioning connecting plate (711) far away from the mower shell (1), an ear plate (13) is arranged on one side of the mower shell (1) facing the tensioning wheel (7), the tensioning bolt (713) penetrates out of the lug plate (13), a tensioning nut (714) matched with the tensioning bolt (713) is arranged on the outer side of the tensioning bolt (713), one end of the tensioning nut (714) facing the tensioning spring (712) is abutted against one side of the lug plate (13) far away from the tensioning spring (712).

10. A tractor front mower as claimed in claim 4 wherein: the anti-collision mower is characterized in that an anti-collision beam (14) is arranged at the bottom of the front end of the mower shell (1), and the anti-collision beam (14) is arranged between the two travelling wheels (11).