CN216358057U

CN216358057U - Road shoulder mower

Info

Publication number: CN216358057U
Application number: CN202123037880.4U
Authority: CN
Inventors: 王仕强; 王铁良; 门大智; 迟树廷
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-06
Filing date: 2021-12-06
Publication date: 2022-04-22
Anticipated expiration: 2031-12-06

Abstract

The utility model discloses a road shoulder mower which comprises a power device and a cutting device, wherein the cutting device is arranged on the front side of the power device through a suspension mechanism and is connected with the power device through a transmission mechanism; the transmission mechanism comprises a swing ring box, the output end of the swing ring box is connected with a movable knife connecting rod, and the movable knife connecting rod is connected with the cutting device; the suspension mechanism comprises a front suspension rack and a rear suspension rack, the cutting device is arranged at the bottom of the front suspension rack, and the rear suspension rack is arranged on the power device; the front suspension frame is provided with a cutting knife oil cylinder, and the output end of a telescopic rod of the cutting knife oil cylinder is connected with the cutting device; the road shoulder mower disclosed by the utility model can realize mechanized high-efficiency mowing, greatly reduces the labor intensity of road maintenance workers, saves time and labor, improves the mowing quality and mowing efficiency of weeds, reduces the mowing cost, and is more economical and practical.

Description

Road shoulder mower

Technical Field

The utility model relates to a cutting device, in particular to a road shoulder mower.

Background

The land-big-thing spotters in China are vast and the roads are all over the country. Along with the lengthening and quality improvement of high-grade roads in China, the auxiliary standards on two sides of the road shoulders are also improved. The northeast area has a small population, long village distance and long highway line, and is very unfavorable for road maintenance; when the large snow covers the weeds in summer and grows in a bunch in winter, the road shoulders on the two sides can be cared up and can be disorderly shielded if not cleaned in time, and particularly surrounding villagers are grazed at the place, so that traffic accidents are easily caused. The conventional solution at present aiming at the situation is that road maintenance workers cut roadside weeds by the backpack type manual mower, the backpack type manual shoulder mower is widely applied to road maintenance machinery, but the backpack type manual shoulder mower has the following defects in the operation process: the backpack type manual road shoulder mower comprises an engine, a connecting rod bracket, a weeding part and other parts, has heavier dead weight which is more than 8 kilograms, and has great labor intensity because a road maintenance worker carries the mower on the back for mowing; secondly), the knapsack manual road shoulder mower has low mowing quality, and the mowing machine is manually carried on the knapsack to manually control to mow so that the cut stubbles are difficult to level; thirdly), the knapsack type manual road shoulder mower has low mowing efficiency, and each person can averagely perform mowing operation of about 2000 square meters every day; fourthly) the cost of adopting artifical curb lawn mower of backpack to mow is higher, and gasoline engine operating cost is higher to the machine need set up safety device in order to guarantee the security of artifical use. Therefore, there is a need for a lawn mower that can kill weeds mechanically and has high mowing efficiency.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides a road shoulder mower.

In order to solve the technical problems, the utility model adopts the technical scheme that: a road shoulder mower comprises a power device and a cutting device, wherein the cutting device is arranged on the front side of the power device through a suspension mechanism and is connected with the power device through a transmission mechanism; the transmission mechanism comprises a swing ring box, a swing ring shaft is arranged in the swing ring box, a cutting knife belt pulley is arranged at the input end of the swing ring shaft, and the cutting knife belt pulley is connected with the power device through belt transmission; the swing ring shaft is sleeved with a swing ring, the outer side of the swing ring is provided with a swing ring fork, the output end of the swing ring fork is connected with a movable knife connecting rod, and the movable knife connecting rod is connected with the cutting device;

the suspension mechanism comprises a front suspension rack and a rear suspension rack, the cutting device is arranged at the bottom of the front suspension rack, and the rear suspension rack is arranged on the power device; a pull rod is hinged between the front suspension rack and the rear suspension rack, a rotatable support sleeve shaft is arranged at the top of the rear suspension rack, a suspension arm is fixedly arranged at the end part of the support sleeve shaft, and the suspension arm is connected with the pull rod through a suspension rod; a lifting arm is fixedly arranged in the middle of the support sleeve shaft, a lifting oil cylinder is fixedly arranged on the rear suspension frame, and the output end of a telescopic rod of the lifting oil cylinder is hinged with the lifting arm; the front suspension frame is provided with a cutting knife oil cylinder, and the output end of a telescopic rod of the cutting knife oil cylinder is connected with the cutting device.

Furthermore, the power device comprises a tractor, the transmission mechanism also comprises a middle wheel, and the middle wheel is arranged on the rear suspension rack; the output end of the engine of the tractor is connected with a belt pulley, the belt pulley is connected with an intermediate wheel through belt transmission, and the intermediate wheel is connected with a cutting knife belt pulley positioned outside a swing ring box through a transmission belt.

The cutting device comprises a cutting knife and a cutting table, the cutting table is arranged below the swing ring box, a cutting table supporting frame is fixedly arranged at one end of the cutting table, and a cutting table pin shaft is arranged at the top end of the cutting table supporting frame;

a cutting knife supporting frame is fixedly arranged at one end of the cutting knife, a supporting pipe sleeve is arranged at the top end of the cutting knife supporting frame, and the supporting pipe sleeve is arranged outside the header pin shaft to connect the cutting knife and the header together;

the cutter is provided with a cutter bar, and the other end of the cutter bar is hinged with the output end of the movable cutter connecting rod.

Furthermore, a clutch device is arranged below the transmission belt and comprises a clutch wheel and a clutch stay wire, and the clutch wheel is positioned between the intermediate wheel and the cutting knife belt pulley; the clutch wheel is arranged on the clutch wheel bracket, and the other end of the clutch wheel bracket is hinged on the front suspension bracket;

the clutch stay wire comprises a stay wire core shaft and a stay wire sleeve, the stay wire sleeve is sleeved outside the stay wire core shaft, and a stay wire locking head A and a stay wire locking head B are respectively arranged at two ends of the stay wire core shaft; a stay wire buckle A matched with the stay wire locking head A is arranged on the side wall of the clutch wheel bracket, and the stay wire locking head A is clamped in the stay wire buckle A to connect one end of the stay wire core shaft with the clutch wheel bracket; a stay wire buckle B matched with the stay wire locking head B is arranged on the outer wall of the support pipe sleeve, and the stay wire locking head B is clamped in the stay wire buckle B to connect the other end of the stay wire core shaft with the cutting knife;

the outer sides of the two ends of the stay wire sleeve are respectively provided with a stay wire support A and a stay wire support B, the stay wire support A is fixedly arranged on the front suspension frame, and the stay wire support B is fixedly arranged on the header support frame.

Furthermore, the swing ring is sleeved on the swing ring shaft through a swing shaft sleeve, and a swing ring bearing is arranged between the swing shaft sleeve and the swing ring.

Furthermore, a head of the swing fork shaft is fixedly arranged at the lower part of the swing ring fork, a swing arm is fixedly arranged on the head of the swing fork shaft, and the output end of the swing arm is positioned at the outer side of the box body of the swing ring box and is connected with the movable knife connecting rod.

Furthermore, the front part of the tractor is provided with a front suspension cross beam, and a rear suspension rack of the suspension mechanism is connected to a frame of the tractor through the front suspension cross beam.

Furthermore, a hydraulic support arm is fixedly arranged on the upper surface of the cutting knife, and the output end of a telescopic rod of the cutting knife oil cylinder is hinged with the hydraulic support arm.

The road shoulder mower disclosed by the utility model can realize mechanized high-efficiency mowing, greatly reduces the labor intensity of road maintenance workers, saves time and labor, improves the mowing quality and mowing efficiency of weeds, reduces the mowing cost, and is more economical and practical.

Drawings

Fig. 1 is a schematic structural diagram of a road shoulder mower of the utility model.

Fig. 2 is a left side view of fig. 1.

Fig. 3 is a top view of fig. 1.

Fig. 4 is a side view of fig. 1.

Fig. 5 is a schematic structural diagram of the wobble-ring box.

Fig. 6 is a side view of fig. 5.

Fig. 7 is a sectional view taken along line B-B of fig. 5.

Fig. 8 is a schematic view of the suspension mechanism.

Fig. 9 is a right side view of fig. 8.

Fig. 10 is a front view of fig. 8.

Fig. 11 is a schematic structural view of a clutch cable.

Fig. 12 is a partially enlarged schematic view of the clutch device of fig. 4.

Fig. 13 is a schematic structural view of the cutting device.

FIG. 14 is a partial enlarged view of the relationship between the cutting knife and the hydraulic support arm, the knife bar, the support sleeve, and the pull string fastener B in FIG. 13.

Fig. 15 is a schematic structural view of the swing ring fork.

In the figure: 1. a cutting device; 2. a suspension mechanism; 3. a swing ring box; 4. a movable knife connecting rod; 5. a cutter belt pulley; 6. a pendulum shaft; 7. a swinging ring; 8. a swing ring fork; 9. a front suspension frame; 10. a rear suspension rack; 11. supporting a quill; 12. a lifting arm; 13. a suspension arm; 14. a pull rod; 15. a boom; 16. a lift cylinder; 17. a cutter oil cylinder; 18. a swing shaft sleeve; 19. a wobble ring bearing; 20. a head of the swing fork shaft; 21. swinging arms; 22. cutting; 23. a header; 24. a header pin shaft; 25. a tractor; 27. a belt pulley; 28. an intermediate wheel; 29. a transmission belt; 30. a clutch wheel; 31. a clutch wheel support; 32. a pull wire is clutched; 33. hanging a front cross beam; 34. a header support frame; 35. a wire drawing mandrel; 36. a wire sleeve; 37. a stay wire locking head A; 38. a stay wire locking head B; 39. a wire drawing buckle A; 40. a cutting knife supporting frame; 41. a support sleeve; 42. a cutter bar; 43. a stay wire buckle B; 44. a stay wire bracket A; 45. a stay wire bracket B; 46. a hydraulic support arm; 47. a weight box; 48. and (4) a pin.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the road shoulder mower comprises a power device and a cutting device 1, wherein the cutting device 1 is arranged on the front side of the power device through a suspension mechanism 2, and the cutting device 1 is connected with the power device through a transmission mechanism. The power plant includes a tractor 25 which serves as the main support and power source for the shoulder mower of the present invention.

The front part of the tractor 25 is provided with a front suspension cross beam 33; the hanging mechanism 2 comprises a front hanging rack 9 and a rear hanging rack 10, the rear hanging rack 10 is connected to a rack of the tractor through a front hanging beam 33, the cutting device 1 is arranged at the bottom of the front hanging rack, and a weight box 47 is further arranged on the other side of the bottom of the front hanging rack 9 and used for balancing the weight of the cutting device 1; a pull rod 14 is hinged between the front suspension rack 9 and the rear suspension rack 10, a rotatable supporting sleeve shaft 11 is arranged at the top of the rear suspension rack 10, a suspension arm 13 is fixedly arranged at the end part of the supporting sleeve shaft, and the suspension arm is connected with the pull rod through a suspension rod 15; a lifting arm 12 is fixedly arranged in the middle of the support sleeve shaft 11, a lifting oil cylinder 16 is fixedly arranged on the rear suspension frame 10, and the output end of a telescopic rod of the lifting oil cylinder is hinged with the lifting arm 12; the telescopic rod of the lifting oil cylinder 16 extends or retracts to drive the lifting arm 12 to rise or fall, and further drive the front suspension frame 9 to rise or fall, so that the position of the whole cutting device 1 in the vertical direction can be adjusted. The front suspension frame 9 is provided with a cutting knife oil cylinder 17, and the output end of a telescopic rod of the cutting knife oil cylinder is connected with the cutting device 1.

The transmission mechanism comprises a swing ring box 3 and an intermediate wheel 28, a swing ring shaft 6 is arranged in the swing ring box 3, a cutting knife belt pulley 5 is arranged at the input end of the swing ring shaft 6, and the cutting knife belt pulley is connected with the power device through belt transmission; the swing ring shaft 6 is sleeved with a swing ring 7, the swing ring 7 is sleeved on the swing ring shaft 6 through a swing shaft sleeve 18, and a swing ring bearing 19 is arranged between the swing shaft sleeve and the swing ring. The outer side of the swing ring is provided with a swing ring fork 8, the lower part of the swing ring fork 8 is fixedly provided with a swing fork shaft head 20, a swing arm 21 is fixedly arranged on the swing fork shaft head, and the output end of the swing arm 21 is positioned on the outer side of the box body of the swing ring box and is connected with the movable knife connecting rod. The swinging ring box 3 of the road shoulder mower is horizontally arranged, the swinging ring fork 8 is vertical to the ground, and the swinging arm 21 horizontally swings.

The cutting device 1 comprises a cutting knife 22 and a cutting table 23, the cutting table 23 is arranged below the swing ring box, a knife bar 42 is arranged on the cutting knife 22, and the other end of the knife bar is hinged with the output end of the movable knife connecting rod 4 through a pin 48. A header support frame 34 is fixedly arranged at one end of the header, and a header pin shaft 24 is arranged at the top end of the header support frame; a cutting knife support frame 40 is fixedly arranged at one end of the cutting knife 22, a support pipe sleeve 41 is arranged at the top end of the cutting knife support frame, and the support pipe sleeve 41 is sleeved outside the header pin shaft 24 to connect the cutting knife and the header together; the support sleeve 41 is coaxial with the pin 48.

The upper surface of the cutting knife is fixedly provided with a hydraulic support arm 46, the output end of a telescopic rod of the cutting knife oil cylinder is hinged with the hydraulic support arm 46, the telescopic rod of the cutting knife oil cylinder extends out or retracts to drive the cutting knife to rotate in the vertical direction around a hinged joint of the hydraulic support arm 46 and the telescopic rod of the cutting knife oil cylinder, and the cutting knife oil cylinder drives the cutting knife to rotate to a horizontal state when the cutting knife is about to perform mowing operation; the cutting knife oil cylinder 17 drives the cutting knife to rotate in the vertical direction, and the cutting table rotates synchronously with the cutting knife.

The transmission mechanism further comprises an intermediate wheel 28, which is arranged on the rear suspension 10; the output end of the engine of the tractor 25 is connected with a belt pulley 27, the belt pulley 27 is connected with an intermediate wheel 28 through belt transmission, and the intermediate wheel 28 is connected with a cutting knife belt pulley 5 positioned outside the swing ring box through a transmission belt 29.

A clutch device is arranged below the transmission belt 29 and comprises a clutch wheel 30 and a clutch pull wire 32, and the clutch wheel is positioned between the intermediate wheel 28 and the cutting knife belt wheel 5; the clutch wheel 30 is arranged on the clutch wheel bracket 31, and the other end of the clutch wheel bracket is hinged on the front suspension bracket 9;

the clutch stay wire 32 comprises a stay wire mandrel 35 and a stay wire sleeve 36, the stay wire sleeve is sleeved outside the stay wire mandrel, the stay wire sleeve is a flexible pipe, and the stay wire mandrel can slide in the stay wire sleeve.

The two ends of the stay wire core shaft 35 are respectively provided with a stay wire locking head A37 and a stay wire locking head B38; a stay wire buckle A39 matched with the stay wire locking head A37 is arranged on the side wall of the clutch wheel bracket 31, and the stay wire locking head A is clamped in the stay wire buckle A to connect one end of the stay wire core shaft 35 with the clutch wheel bracket 31; a stay wire buckle B43 matched with the stay wire locking head B38 is arranged on the outer wall of the support pipe sleeve 41, and the stay wire locking head B is clamped in the stay wire buckle B to connect the other end of the stay wire core shaft with the cutting knife 22;

the outer sides of the two ends of the stay wire sleeve 36 are respectively provided with a stay wire bracket A44 and a stay wire bracket B45, the stay wire bracket A44 is fixedly arranged on the front suspension bracket 9, and the stay wire bracket B45 is fixedly arranged on the header support frame 34.

The clutch device is in linkage fit with the cutting device and the cutting knife oil cylinder, when the cutting device is driven by the cutting knife oil cylinder to rotate to a horizontal state to perform weed cutting operation, the clutch wheel of the clutch device moves upwards to push the transmission belt 29 tightly, so that power can be transmitted to the cutting knife belt pulley from the middle wheel, and the swing ring box can drive the cutting knife to horizontally reciprocate to realize weed cutting; when the cutting device does not work, the cutting device is driven by the cutting knife oil cylinder to rotate upwards, at the moment, the clutch wheel of the clutch device moves downwards and does not push against the transmission belt 29, the transmission belt 29 is in a loose state, the power of the middle wheel is not transmitted to the swing ring box, and the cutting knife stops reciprocating swing.

The working method of the road shoulder mower comprises the following steps: when the shoulder mower is about to cut weeds, the telescopic rod of the cutting knife oil cylinder 17 extends out to drive the cutting knife 22 to rotate downwards to be in a horizontal state around the hinged point of the hydraulic support arm 46 and the telescopic rod of the cutting knife oil cylinder; meanwhile, the cutting knife 22 rotates downwards to drive the supporting pipe sleeve 41 fixed at the end part of the supporting pipe sleeve to rotate anticlockwise, so as to drive the stay wire buckle B43 fixed on the supporting pipe sleeve 41 to rotate anticlockwise, the stay wire buckle B43 moves towards the direction far away from the clutch wheel bracket 31, the stay wire buckle B pulls the stay wire mandrel 35 through the stay wire locking head B clamped in the stay wire buckle B, so that the stay wire mandrel 35 slides in the stay wire sleeve 36, the clutch wheel bracket 31 is pulled and lifted through the stay wire locking head A37 clamped in the stay wire buckle A39 at the other end of the stay wire mandrel 35, so that the clutch wheel bracket drives the clutch wheel 30 arranged at the end part of the stay wire mandrel to move upwards, the clutch wheel 30 moves upwards to jack the transmission belt 29, and the transmission belt 29 is tensioned to enable power to be transmitted from the intermediate wheel 28 to the cutting knife belt wheel 5 through the transmission belt; the engine of the tractor 25 is started, the engine drives the belt pulley 27 to rotate, the belt pulley 27 drives the middle wheel 28 to rotate through belt transmission, the middle wheel 28 drives the cutting knife belt pulley 5 to rotate through the transmission belt 29, the cutting knife belt pulley 5 rotates to drive the swing ring shaft 6 to rotate, and the rotating motion is converted into reciprocating swing motion under the matching action of the swing ring sleeved on the swing ring shaft and the swing ring fork on the outer side of the swing ring shaft, so that the reciprocating swing of the swing arm in the horizontal direction is realized; the swing arm is connected with the cutting knife through the movable knife connecting rod and the knife bar, so that the swing ring box drives the cutting knife to swing and cut weeds in a reciprocating mode in the horizontal direction; when the position of the whole cutting device in the vertical direction needs to be adjusted, the telescopic rod of the lifting oil cylinder 16 extends out or retracts to drive the whole cutting device 1 to move downwards or upwards in the vertical direction to adjust the position of the cutting knife.

When the mower stops mowing, the telescopic rod of the cutting knife oil cylinder 17 retracts to drive the cutting knife to rotate upwards, the cutting knife drives the supporting pipe sleeve 41 to rotate clockwise, the stay wire buckle B on the supporting pipe sleeve rotates clockwise, the distance between the stay wire buckle B and the clutch wheel bracket is reduced, the stay wire mandrel slides in the stay wire sleeve, the clutch wheel bracket moves downwards under the action of the gravity of the clutch wheel 30 and does not push against the transmission belt 29, the transmission relation between the middle wheel and the cutting knife belt pulley is relieved when the transmission belt is in a loose state, and the swing ring box stops driving the cutting knife to swing horizontally.

The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make variations, modifications, additions or substitutions within the technical scope of the present invention.

Claims

1. A curb lawn mower which characterized in that: the cutting device comprises a power device and a cutting device (1), wherein the cutting device (1) is arranged on the front side of the power device through a suspension mechanism (2), and the cutting device (1) is connected with the power device through a transmission mechanism; the transmission mechanism comprises a swing ring box (3), a swing ring shaft (6) is arranged in the swing ring box (3), a cutting knife belt pulley (5) is arranged at the input end of the swing ring shaft (6), and the cutting knife belt pulley is connected with the power device through belt transmission; a swing ring (7) is sleeved on the swing ring shaft (6), a swing ring fork (8) is arranged on the outer side of the swing ring, the output end of the swing ring fork is connected with a movable knife connecting rod (4), and the movable knife connecting rod is connected with the cutting device (1);

the suspension mechanism (2) comprises a front suspension rack (9) and a rear suspension rack (10), the cutting device (1) is arranged at the bottom of the front suspension rack, and the rear suspension rack is arranged on the power device; a pull rod (14) is hinged between the front suspension rack (9) and the rear suspension rack (10), a rotatable support sleeve shaft (11) is arranged at the top of the rear suspension rack (10), a suspension arm (13) is fixedly arranged at the end part of the support sleeve shaft, and the suspension arm is connected with the pull rod through a suspension rod (15); a lifting arm (12) is fixedly arranged in the middle of the support sleeve shaft (11), a lifting oil cylinder (16) is fixedly arranged on the rear suspension rack (10), and the output end of a telescopic rod of the lifting oil cylinder is hinged with the lifting arm (12); the front suspension frame (9) is provided with a cutting knife oil cylinder (17), and the output end of a telescopic rod of the cutting knife oil cylinder is connected with the cutting device (1).

2. The shoulder mower of claim 1 wherein: the power device comprises a tractor (25), the transmission mechanism further comprises a middle wheel (28), and the middle wheel is arranged on the rear suspension rack (10); the output end of an engine of the tractor (25) is connected with a belt pulley (27), the belt pulley (27) is connected with an intermediate wheel (28) through belt transmission, and the intermediate wheel (28) is connected with a cutting knife belt pulley (5) positioned outside the swing ring box through a transmission belt (29).

3. The shoulder mower of claim 2 wherein: the cutting device (1) comprises a cutting knife (22) and a cutting table (23), the cutting table (23) is arranged below the swing ring box, a cutting table supporting frame (34) is fixedly arranged at one end of the cutting table, and a cutting table pin shaft (24) is arranged at the top end of the cutting table supporting frame;

a cutting knife supporting frame (40) is fixedly arranged at one end of the cutting knife (22), a supporting pipe sleeve (41) is arranged at the top end of the cutting knife supporting frame, and the supporting pipe sleeve (41) is sleeved outside the header pin shaft (24) to connect the cutting knife and the header together;

a cutter bar (42) is arranged on the cutting knife (22), and the other end of the cutter bar is hinged with the output end of the movable knife connecting rod (4).

4. The shoulder mower of claim 3 wherein: a clutch device is arranged below the transmission belt (29), the clutch device comprises a clutch wheel (30) and a clutch pull wire (32), and the clutch wheel is positioned between the middle wheel (28) and the cutting knife belt pulley (5); the clutch wheel (30) is arranged on a clutch wheel bracket (31), and the other end of the clutch wheel bracket is hinged to the front suspension rack (9);

the clutch stay wire (32) comprises a stay wire mandrel (35) and a stay wire sleeve (36), the stay wire sleeve is sleeved outside the stay wire mandrel, and two ends of the stay wire mandrel (35) are respectively provided with a stay wire locking head A (37) and a stay wire locking head B (38); a stay wire buckle A (39) matched with the stay wire locking head A (37) is arranged on the side wall of the clutch wheel support (31), and the stay wire locking head A is clamped in the stay wire buckle A to connect one end of the stay wire core shaft (35) with the clutch wheel support (31); a stay wire buckle B (43) matched with the stay wire locking head B (38) is arranged on the outer wall of the support pipe sleeve (41), and the stay wire locking head B is clamped in the stay wire buckle B to connect the other end of the stay wire mandrel with the cutting knife (22);

the outer sides of the two ends of the stay wire sleeve (36) are respectively provided with a stay wire support A (44) and a stay wire support B (45), the stay wire support A (44) is fixedly arranged on the front suspension rack (9), and the stay wire support B (45) is fixedly arranged on the header support frame (34).

5. The shoulder mower of claim 1 wherein: the swing ring (7) is sleeved on the swing ring shaft (6) through a swing shaft sleeve (18), and a swing ring bearing (19) is arranged between the swing shaft sleeve and the swing ring.

6. The shoulder mower of claim 5 wherein: the lower part of the swing ring fork (8) is fixedly provided with a swing fork shaft head (20), a swing arm (21) is fixedly arranged on the swing fork shaft head, and the output end of the swing arm (21) is positioned on the outer side of the box body of the swing ring box and is connected with the movable knife connecting rod.

7. The shoulder mower of claim 2 wherein: the front part of the tractor (25) is provided with a front suspension beam (33), and a rear suspension rack (10) of the suspension mechanism (2) is connected to the frame of the tractor through the front suspension beam (33).

8. The shoulder mower of claim 3 wherein: the upper surface of the cutting knife (22) is fixedly provided with a hydraulic support arm (46), and the output end of a telescopic rod of the cutting knife oil cylinder (17) is hinged with the hydraulic support arm (46).