Floating suspension type mower

Abstract

The utility model discloses a floating suspension type mower which comprises a frame body, a supporting arm which is arranged on the frame body and can rotate around the advancing direction of the frame body, a cutter rest is arranged on the supporting arm, a fixed cutter and a movable cutter are arranged on the cutter rest, and the floating suspension type mower further comprises a driving air cylinder or a driving hydraulic cylinder and a vertical floating mechanism. The driving air cylinder or the driving hydraulic cylinder is connected with the supporting arm and can drive the supporting arm to rotate around the frame body. The vertical floating mechanism comprises a first elastic component, a first rotary supporting seat and a first floating rod, the first elastic component is basically vertically arranged, the first floating rod is movably connected with the supporting arm, the first elastic component stores energy and abuts against the first rotary supporting seat, and the first floating rod penetrates through the first elastic component and the first rotary supporting seat and rotates along with the supporting arm. According to the floating suspension type mower, the cutter rest and the supporting arm are arranged in a floating suspension mode, the cutter rest can be folded, the turning radius is small, walking is flexible and convenient, the structure is simple, the requirement for tractor power is low, installation is convenient, vibration of the cutter rest is small, and the ground clearance is large.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a floating suspension type lawn mower. Background Art

[0002] As we all know, harvesting machinery occupies an important position in agricultural machinery and equipment. There are many types of harvesting machinery, including lawn mowers and pole-shaped harvesters. Most of their working principles are that the harvester's cutter performs a plane linear reciprocating motion to cut down the pole-shaped crops for subsequent processing. Most of the existing lawn mowers are door-type structures, which have high strength but a large turning radius and are not flexible to walk. At the same time, most lawn mowers do not have the ability to imitate shapes. When facing pits and protrusions, the cutter is easy to directly and rigidly contact with the protrusions, causing the cutter to deform or damage the cutter. In addition, the common lawn mowers with profiling functions or floating functions are generally more complex in structure, and the processing and daily maintenance costs are high. In addition, most of the existing lawn mowers do not have running wheels and are usually fixed to the tractor through a three-point suspension. Therefore, the power required for the lawn mower to walk and run is relatively large, and the tractor power requirements are high. In addition, the three-point installation is not very convenient, and at least two people are required to complete the fixed connection with the tractor, and the operation is relatively cumbersome. In addition, the angle adjustment of the mower directly affects its adaptability. The angle of the mower of a common lawn mower is usually a fixed value or the adjustment is cumbersome, which makes the adaptability poor or adjustment difficult when harvesting fallen crops, and the user experience is poor. For example, the utility model patent with application number 202110977867.2 is named Self-propelled Rotary Wide-width Mower and the utility model patent with application number 202221792296.1 is named Mower. Both have the above problems. Utility Model Content

[0003] The utility model aims to provide a floating suspension type lawn mower, in which a blade holder and a support arm are floatingly suspended and the blade holder can be folded, a small turning radius, flexible walking, a simple structure, low tractor power requirements, convenient installation, small blade holder vibration, and high ground clearance.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A floating suspension lawn mower comprises a frame, on which is provided a support arm which can rotate around the direction of travel of the frame, on which is provided a tool holder, on which is provided a fixed tool and a movable tool, and further comprises a driving cylinder or a driving hydraulic cylinder and a vertical floating mechanism, wherein the driving cylinder or the driving hydraulic cylinder is connected to the support arm and can drive the support arm to rotate around the frame; the vertical floating mechanism comprises a first elastic component which is basically vertically arranged, a first rotating support seat and a first floating rod which is movably connected to the support arm, the first elastic component stores energy and rests against the first rotating support seat, the first floating rod passes through the first elastic component and the first rotating support seat and rotates with the support arm; when the support arm rotates from bottom to top, the first floating rod tends to move upward and drives the first rotating support seat to rotate with it while stretching the first elastic component, and when the support arm rotates from top to bottom, the first floating rod tends to move downward and drives the first rotating support seat to rotate with it while compressing the first elastic component.

[0006] Preferably, it further comprises a walking mechanism, wherein the walking mechanism comprises walking wheels arranged on both sides of the frame.

[0007] Preferably, it also includes a transverse floating mechanism, which includes a second elastic component, a second universal support seat and a second floating rod movably connected to the support arm, the second elastic component stores energy and rests on the second universal support seat, the second floating rod passes through the second elastic component and the second universal support seat and rotates with the support arm in a vertical plane basically consistent with the walking direction of the frame, and the first floating rod is universally movably connected to the support arm.

[0008] Preferably, a fixed seat is provided at the distal end of the support arm, the frame is connected to an external tractor, a power input shaft connected to a power output shaft of the external tractor is provided on the frame, the power input shaft is connected to an eccentric connecting rod mechanism via a transmission mechanism, the eccentric connecting rod mechanism is arranged on the fixed seat and the eccentric connecting rod mechanism is connected to the movable knife; the power input shaft drives the movable knife to perform reciprocating motion via the transmission mechanism and the eccentric connecting rod mechanism, the fixed seat is hinged to the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder, and the fixed seat can perform rotational motion around the axis when driven by the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder, thereby driving the knife holder to perform rotational motion around the axis.

[0009] Preferably, a limiting component is provided on the support arm, and when the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder contracts to drive the fixed seat and the tool holder to rotate toward the side near the frame body until the tool holder approaches a vertical state, the fixed seat resists the limiting component, and the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder continues to contract to drive the support arm to rotate upward.

[0010] Preferably, the limiting component includes a fixed position arranged at the distal end of the support arm, and a fixing pin corresponding to the fixed position is provided on the fixing seat, the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder contracts to drive the fixing seat and the tool holder to rotate toward the near frame body side, and then drives the fixing pin to rotate until the fixing pin is inserted in the fixed position, and the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder continues to contract to drive the support arm to rotate upward; the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder extends to drive the fixing pin to disengage from the fixed position, and the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder continues to extend to drive the fixing seat and the tool holder to rotate toward the far frame body side; or a fixing pin is provided at the distal end of the support arm, and a fixed position corresponding to the fixing pin is provided on the fixing seat.

[0011] Preferably, an arc-shaped slide plate is provided on the fixed seat, and the first floating rod and the second floating rod are universally hinged at the middle part of the support arm or near the tool holder side; the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder contracts and the fixed seat rotates, thereby driving the arc-shaped slide plate and the tool holder to rotate.

[0012] Preferably, both the first elastic component and the second elastic component are return springs, and spring limiters are provided at the ends of the first elastic component and the second elastic component far from the support arms.

[0013] Preferably, the end of the driving cylinder remote cylinder rod or the driving hydraulic cylinder remote hydraulic cylinder rod is hinged on the frame, and a rotating shaft is provided on both sides of the first rotating support seat, and the rotating shaft can be rotatably fixed on the frame. A first limiting hole is provided on the first rotating support seat for the first floating rod to radially pass through, and the first floating rod drives the first rotating support seat to rotate through the first limiting hole and slide along the first limiting hole.

[0014] Preferably, a spherical hinge is provided on the second universal support seat, a second limiting hole for the second floating rod to pass through is provided on the spherical hinge, a long hole is provided on the support arm, and the end of the second floating rod is hinged on the long hole.

[0015] Preferably, the support arm is hinged on the frame body, a fixing ring is provided on the frame body, the frame body is connected to an external tractor via the fixing ring, and the hinge point between the support arm and the frame body is higher than the fixing ring.

[0016] Preferably, the support arm is fixed to the frame body by threaded connection with a connecting seat, the support arm is hinged to the connecting seat, a long arc-shaped hole is provided on the connecting seat or the frame body, and the connecting seat is threadedly connected to the frame body through the long arc-shaped hole.

[0017] Further preferably, the transmission mechanism is a belt drive, and the eccentric connecting rod mechanism includes an eccentric shaft, a connecting rod and a rocker arm. An eccentric shaft through hole is provided on the fixed seat, and the small shaft end of the eccentric shaft passes through the eccentric shaft through the hole and is rotatably connected to the transmission mechanism. The large shaft end of the eccentric shaft cooperates with the end cover through a first bearing, and the large shaft end of the eccentric shaft is provided with an eccentric shaft end that cooperates with the connecting rod; the eccentric shaft end is hingedly connected to one end of the connecting rod through a second bearing, and the other end of the connecting rod is hingedly connected to the middle and lower part of the rocker arm; the upper end of the rocker arm is hingedly connected to the fixed seat through a third bearing, and the lower end of the rocker arm is provided with a tool holder mounting hole, and the tool holder is mounted on the tool holder mounting hole.

[0018] In the above technical scheme, by setting a first elastic component to store energy and rest against the first rotating support seat, the first floating rod passes through the first elastic component and the first rotating support seat and rotates with the support arm to realize vertical floating of the support arm and the tool holder, and then when the support arm rotates from bottom to top, the first floating rod tends to move upward and drives the first rotating support seat to rotate with it while stretching the elastic component. When the support arm rotates from top to bottom, the first floating rod tends to move downward and drives the first rotating support seat to rotate with it while compressing the elastic component, thereby realizing the contour-like vertical suspension of the tool holder and the support arm and providing auxiliary support to the support arm. In this way, when facing a raised obstacle, the tool holder and the support arm tend to lift upward, thereby reducing deformation or damage to the support arm, the tool holder, the fixed knife and the movable knife. By setting a transverse floating mechanism, it can adapt to the up and down floating of the support arm and provide further auxiliary support to the support arm, prevent the far end of the support arm from being deformed too much, and realize single-arm suspension of the support arm instead of the previous gate structure. The limiting component on the support arm is combined to make the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder contract to drive the fixed seat and the tool holder to rotate toward the side near the frame body until the tool holder approaches a vertical state. The fixed seat resists the limiting component to form a whole with the tool holder and the fixed seat. In this way, the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder continues to contract to drive the support arm to rotate upward, so that the tool holder can be retracted, the turning radius is further reduced, and walking is more flexible. By arranging traveling wheels on both sides of the frame, the frame is further supported. The rolling friction of the traveling wheels and the support to the frame further reduce the power demand of the tractor. The floating suspension mower and the tractor can be installed by simply hanging the fixing ring on the tractor and then plugging the power output shaft of the external tractor with the power input shaft. The installation is extremely convenient, and the hinge point between the support arm and the frame is higher than the fixing ring, the ground clearance is high, and the ability to pass through obstacles or uneven ground is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the floating suspension mower (operating state diagram);

[0020] Figure 2 This is a schematic diagram of the floating suspension lawn mower (schematic diagram of the blade holder being folded);

[0021] Figure 3 It is a schematic diagram of the exploded state of the vertical floating mechanism;

[0022] Figure 4 It is a schematic diagram of the exploded state of the lateral floating mechanism;

[0023] Figure 5 It is a schematic diagram of the eccentric connecting rod mechanism;

[0024] Figure 6 It is a schematic diagram of the eccentric connecting rod mechanism (excluding the rocker arm and the connecting rod rocker arm articulated shaft);

[0025] Figure 7 It is a schematic diagram of the rear view structure of the connecting seat. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings:

[0027] like Figures 1 to 7As shown, the floating suspension lawn mower comprises a frame body 1 of a frame structure, on which are provided a support arm 2 which can rotate in a direction consistent with the moving direction of the frame body, a driving cylinder 3 or a driving hydraulic cylinder and a vertical floating mechanism 4, on which are provided a knife holder 5, on which are provided a fixed knife and a moving knife, the frame body 1 is connected to an external tractor, on which is provided a power input shaft 11 connected to a power output shaft of the external tractor, the power input shaft 11 is connected to an eccentric connecting rod mechanism 9 or a crank slider mechanism via a transmission mechanism, and the eccentric connecting rod mechanism is connected to the moving knife, so that the power input shaft 11 drives the moving knife to do reciprocating motion via the transmission mechanism and the eccentric connecting rod mechanism to achieve mowing. The end of the distal cylinder rod 31 of the driving cylinder 3 or the distal hydraulic cylinder rod of the driving hydraulic cylinder is hinged on the frame body 1, and the other end is connected to the support arm 2 and can drive the support arm 2 to rotate around the frame body 1, so that the support arm 2 rises or falls, thereby adjusting the height of the tool holder 5; the vertical floating mechanism 4 includes a first elastic component 41 basically vertically arranged, a first rotating support seat 42 and a first floating rod 43 movably connected to the support arm 2, wherein the first elastic component 4 preferably stores energy of a reset spring and rests on the first rotating support seat 42, and the first floating rod 43 passes through the first elastic component 41 and the first rotating support seat 42 and rotates with the support arm 2. Specifically, a rotating shaft 44 can be provided on both sides of the first rotating support seat 42, and the rotating shaft 44 can be rotatably fixed on the frame body 1. A first limiting hole 45 for the first floating rod 43 to radially pass through can be provided on the first rotating support seat 42. In this way, the first floating rod 43 passes through the first elastic component 41, radially passes through the first limiting hole 45, and then is movably connected with the support arm 2. The first floating rod 43 can be movably connected with the support arm 2 by two mutually vertical hinges or directly connected to the support arm 2 in a universal direction. In this way, the first floating rod 43 drives the first rotating support seat 42 to rotate through the first limiting hole 45 and realizes sliding along the first limiting hole 45. When the support arm or the tool holder encounters an obstacle, the support arm 2 tends to rotate from bottom to top, and the first floating rod 43 tends to move upward to drive the first rotating support seat 42 to rotate and stretch the elastic component 41; when the support arm or the tool holder encounters a pit, the support arm 2 tends to rotate from top to bottom, and the first floating rod 43 tends to move downward to drive the first rotating support seat 42 to rotate and compress the elastic component 41, so that the tool holder 5 and the support arm 2 are vertically suspended in a contoured manner, and the vertical floating mechanism 4 plays an auxiliary supporting role for the support arm, so that when facing a raised obstacle, the tool holder and the support arm tend to lift upward, avoiding the support arm, the tool holder, the fixed blade and the moving blade from hard contact with the raised obstacle, reducing the deformation or damage of the support arm, the tool holder, the fixed blade and the moving blade. In this embodiment, the floating suspension mower also includes a walking mechanism 6, and the walking mechanism 6 includes walking wheels 61 arranged on both sides of the frame 1, and the walking wheels 61 further support the frame 1, and the rolling friction of the walking wheels and the support of the frame further reduce the power demand of the external tractor.In one embodiment, the floating suspension lawn mower also includes a lateral floating mechanism 7, which includes a second elastic component 71, a second universal support seat 72 and a second floating rod 73 movably connected to the support arm 2. The second elastic component 71 preferably stores energy in a reset spring and rests on the second universal support seat 72. The second floating rod 73 passes through the second elastic component 71 and the second universal support seat 72 and rotates with the support arm 2 in a vertical plane that is basically consistent with the walking direction of the frame 1. The second floating rod 73 is movably connected to the support arm 2 in a universal direction. In this way, the up and down rotation of the support arm 2 drives the second floating rod 73 to rotate accordingly, and then under the action of the second universal support seat 72, the second elastic component 71 is compressed or stretched, which adapts to the up and down floating of the support arm while further assisting the support arm to prevent excessive deformation of the far end of the support arm, thereby realizing single-arm suspension of the support arm instead of the previous gate structure. Specifically, a spherical hinge 74 can be provided on the second universal support seat 72, and a second limiting hole 75 for the second floating rod 73 to pass through can be provided on the spherical hinge 74. A long hole 76 for supporting the second floating rod 73 can be provided on the support arm 2. The end of the second floating rod 73 is hinged on the long hole 76, and the second floating rod 73 slides along the long hole 76 to adapt to the up and down floating of the support arm. A spring limiting 77 is provided at the far end of the first elastic component and the second elastic component, which can be threadedly connected and fixed to the far end of the first floating rod 43 and the second floating rod 73 by a nut to act as a spring limiting 74, so as to conveniently adjust the floating amount and floating elasticity of the vertical floating mechanism 4 and the horizontal floating mechanism 7.

[0028] In a preferred embodiment, a fixed seat 8 is provided at the far end of the support arm 2, and an eccentric connecting rod mechanism 9 is arranged on the fixed seat 8. The fixed seat 8 is hinged with the cylinder rod 31 of the driving cylinder 3 or the hydraulic cylinder rod of the driving hydraulic cylinder. The fixed seat 8 can rotate around the axis under the drive of the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder, thereby driving the tool holder to rotate around the axis, so that the tool holder is retracted from being close to the horizontal to being close to the vertical. Further, a limiting component (not shown in the drawings) is provided on the support arm 2, so that the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder contracts to drive the fixed seat and the tool holder to rotate toward the side close to the frame body until the tool holder approaches the vertical state, the fixed seat 8 abuts against the limiting component, the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder continues to contract to drive the support arm 2 to rotate upward, and the fixed seat 8 and the tool holder are lifted upward accordingly. The limiting component may include a fixed position (not shown in the drawings) arranged at the far end of the support arm 2, and a fixed pin (not shown in the drawings) corresponding to the fixed position is arranged on the fixed seat 8, and the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder contracts to drive the fixed seat and the tool holder to rotate toward the near frame body, and then drives the fixed pin to rotate until the fixed pin is inserted in the fixed position, so that the tool holder and the fixed seat are integrated, so that the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder continues to contract to drive the support arm to rotate upward, so that the tool holder can be folded, the turning radius is further reduced, and walking is more flexible. This structure is widely used in the wall hanging clamps of mops and brooms, and will not be described in detail here. Similarly, the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder is extended to drive the fixing pin out of the fixed position, the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder continues to extend to drive the fixing seat and the knife holder to rotate toward the side of the remote frame body, so as to realize the deployment of the knife holder, the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder continues to extend to drive the fixing seat and the knife holder to continue to rotate toward the side of the remote frame body, so as to realize the harvesting of crops in the groove; or a fixing pin is provided at the far end of the support arm, and a fixed position corresponding to the fixing pin is provided on the fixing seat, and the cylinder rod of the driving cylinder or The hydraulic cylinder rod of the driving hydraulic cylinder contracts and drives the fixed seat and the tool holder to rotate toward the near frame body side, and then drives the fixed pin to rotate until the fixed pin is inserted in the fixed position, so that the tool holder and the fixed seat are integrated. The cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder continues to contract and can drive the support arm to rotate upward, so that the tool holder is retracted; the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder extends and drives the fixed pin to disengage from the fixed position. The cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder continues to extend and drives the fixed seat and the tool holder to rotate toward the far frame body side.

[0029] In a preferred embodiment, an arc-shaped slide plate 81 is also provided on the fixed seat 8 to support the tool holder, so that the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder contracts and rotates the fixed seat, thereby driving the arc-shaped slide plate and the tool holder to rotate. The first floating rod and the second floating rod are preferably universally hinged in the middle of the support arm or near the tool holder side to avoid excessive floating of the first floating rod and the second floating rod, which causes excessive vibration during operation, or too small floating of the first floating rod and the second floating rod to play a floating and supporting role.

[0030] In a preferred embodiment, the support arm 2 is hinged on the frame 1 to enable the support arm 2 to rotate around the moving direction of the frame. A fixing ring 12 is hinged on the frame 1, and the frame is connected to an external tractor through the fixing ring 12. In this way, only the fixing ring 12 is connected to the tractor, and then the power output shaft of the external tractor is plugged into the power input shaft 11, so that the floating suspension mower and the tractor can be installed. The installation is extremely convenient. At the same time, due to the support of the walking wheel, the process of supporting the floating suspension mower is omitted, so one person can achieve convenient installation. Furthermore, the hinge point between the support arm 2 and the frame is higher than the fixing ring 12, and the ground clearance is further increased to 12cm-18cm, and the ability to pass through obstacles or uneven ground is further improved.

[0031] In a preferred embodiment, the support arm 2 is threadedly connected to the frame body 1 through a connecting seat 21, and the support arm 2 is hinged to the connecting seat 21. A long arc-shaped hole 22 is provided on the connecting seat 21 or the frame body 1. The connecting seat 21 is threadedly connected to the frame body 1 through the long arc-shaped hole 22. The connecting seat rotates around the long arc-shaped hole 22, and the support arm rotates accordingly. The angles of the knife holder 5, the fixed knife and the movable knife and the crops to be cut are adjusted accordingly, thereby achieving the harvesting of fallen crops.

[0032] In a preferred embodiment, the transmission mechanism is a belt transmission 91, and the above-mentioned eccentric connecting rod mechanism includes an eccentric shaft 82, a connecting rod 83 and a rocker arm 84. An eccentric shaft through hole is provided on the fixed seat 8, and the small shaft end of the eccentric shaft passes through the eccentric shaft through hole and is rotatably connected to the transmission mechanism. The large shaft end of the eccentric shaft cooperates with the end cover 85 through a first bearing, and the large shaft end of the eccentric shaft is provided with an eccentric shaft end 86 that cooperates with the connecting rod, and the center of the eccentric shaft end is the first axis; the eccentric shaft end is hingedly connected to one end of the connecting rod 83 through a second bearing, and the other end of the connecting rod is hingedly connected to the middle and lower part of the rocker arm 84 through a connecting rod rocker arm hinge shaft 87 The connecting rod and the rocker arm are connected, and the hinge center of the connecting rod and the rocker arm is the second axis; the upper end of the rocker arm is hingedly connected to the upper end hinge shaft 88 of the rocker arm provided at the upper end of the fixed seat through the third bearing, and the hinge center of the upper end of the rocker arm is the third axis. The lower end of the rocker arm is provided with a tool holder mounting hole 89, and the tool holder is installed on the tool holder mounting hole; the first axis to the second axis is the first center distance, the first axis to the third axis is the second center distance, and the second axis to the third axis is the third center distance. The ratio range of the second center distance to the first center distance is 1.7 to 1.9, and the ratio range of the third center distance to the first center distance is 1.75 to 1.85. The first center distance is 110.00 to 120.00 mm, the second center distance is 213.00 to 217.00 mm, and the third center distance is 205.00 to 210.00 mm. The other end of the connecting rod is hingedly connected to the middle and lower part of the rocker arm to replace the original hinge structure of the other end of the connecting rod and the middle part of the rocker arm. The rocker arm is a V-shaped structure. The rocker arm size is designed to be the smallest while meeting the requirements of the reciprocating motion stroke of the moving blade, thereby achieving the smallest size design of the whole machine, thereby minimizing the vibration of the whole machine, improving the work efficiency by increasing the belt drive speed, and extending the service life of the parts, making it easier to promote and apply in the market. This part of the structure can directly adopt an eccentric rocker arm reciprocating mower drive device disclosed in application number CN202221434204.2, or a corresponding structure in a tractor-mounted reciprocating mower disclosed in patent number ZL201920198625.1, so it will not be described here.

[0033] In the above technical solution, the fixing ring 12 is connected to the tractor, and then the power output shaft of the external tractor is plugged into the power input shaft 11, so that the installation of the floating suspension type lawn mower and the tractor can be realized, and the installation is extremely convenient. When the floating suspension type lawn mower needs to move (when not mowing) or needs to bypass a large obstacle, the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder contracts to drive the fixed seat and the knife holder to rotate toward the near frame body side, and then drives the fixed pin to rotate until the fixed pin is inserted in the fixed position, so that the knife holder and the fixed seat are integrated, and the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder continues to contract to drive the support arm to rotate upward, so that the knife holder is retracted, the turning radius is further reduced, and walking is more flexible. When mowing is required, the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder extends to drive the fixing pin out of the fixed position, and the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder continues to extend to drive the fixed seat and the knife holder to rotate toward the far frame body side, so that the knife holder is unfolded. When the support arm or the tool holder encounters an obstacle, the support arm 2 tends to rotate from bottom to top, and the first floating rod 43 tends to move upward, driving the first rotating support seat 42 to rotate and stretching the elastic component 41; when the support arm or the tool holder encounters a pit, the support arm 2 tends to rotate from top to bottom, and the first floating rod 43 tends to move downward, driving the first rotating support seat 42 to rotate and compressing the elastic component 41, so that the tool holder 5 and the support arm 2 are vertically suspended in a contoured manner, and the vertical floating mechanism 4 plays an auxiliary supporting role for the support arm, and the support arm 2 rotates up and down to drive the second floating rod 73 to rotate, and then compress or stretch the second elastic component 71 under the action of the second universal support seat 72, so as to adapt to the floating of the support arm up and down, and further assist the support arm to prevent the support arm from deforming too much at the far end. The cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder continues to extend, driving the fixed seat and the tool holder to continue to rotate toward the far side of the frame, so as to harvest the crops in the groove.

[0034] This embodiment is only an illustration of the concept and implementation of the utility model, and does not limit it. Under the concept of the utility model, technical solutions that have not been substantially changed are still within the scope of protection.

Claims

1. A floating suspension lawn mower, comprising a frame, a support arm rotatable around the frame travel direction is provided on the frame, a knife holder is provided on the support arm, a fixed knife and a movable knife are provided on the knife holder, characterized in that: It also includes a driving cylinder or a driving hydraulic cylinder and a vertical floating mechanism, wherein the driving cylinder or the driving hydraulic cylinder is connected to the support arm and can drive the support arm to rotate around the frame; the vertical floating mechanism includes a first elastic component that is basically vertically arranged, a first rotating support seat, and a first floating rod that is movably connected to the support arm, the first elastic component stores energy and rests on the first rotating support seat, the first floating rod passes through the first elastic component and the first rotating support seat and rotates with the support arm; when the support arm rotates from bottom to top, the first floating rod tends to move upward and drives the first rotating support seat to rotate with it while stretching the first elastic component, and when the support arm rotates from top to bottom, the first floating rod tends to move downward and drives the first rotating support seat to rotate with it while compressing the first elastic component.

2. The floating suspension lawn mower according to claim 1, characterized in that: It also includes a walking mechanism, which includes walking wheels arranged on both sides of the frame.

3. The floating suspension lawn mower according to claim 1 or 2, characterized in that: It also includes a lateral floating mechanism, which includes a second elastic component, a second universal support seat and a second floating rod movably connected to the support arm. The second elastic component stores energy and rests on the second universal support seat. The second floating rod passes through the second elastic component and the second universal support seat and rotates with the support arm in a vertical plane that is basically consistent with the walking direction of the frame. The second floating rod is universally movably connected to the support arm.

4. The floating suspension lawn mower according to claim 1 or 2, characterized in that: A fixed seat is provided at the far end of the support arm, the frame is connected to an external tractor, a power input shaft connected to a power output shaft of the external tractor is provided on the frame, the power input shaft is connected to an eccentric connecting rod mechanism via a transmission mechanism, the eccentric connecting rod mechanism is arranged on the fixed seat and the eccentric connecting rod mechanism is connected to the movable knife; the power input shaft drives the movable knife to perform reciprocating motion via the transmission mechanism and the eccentric connecting rod mechanism, the fixed seat is hinged to the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder, the fixed seat can perform rotational motion around the axis when driven by the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder, thereby driving the knife holder to perform rotational motion around the axis.

5. The floating suspension lawn mower according to claim 4, characterized in that: A limiting component is provided on the support arm. When the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder contracts to drive the fixed seat and the tool holder to rotate toward the side near the frame body until the tool holder approaches a vertical state, the fixed seat abuts against the limiting component, and the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder continues to contract to drive the support arm to rotate upward.

6. The floating suspension lawn mower according to claim 5, characterized in that: The limiting component includes a fixed position arranged at the far end of the support arm, a fixing pin corresponding to the fixed position is provided on the fixing seat, the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder contracts to drive the fixing seat and the tool holder to rotate toward the near frame body side, and then drives the fixing pin to rotate until the fixing pin is inserted in the fixed position, the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder continues to contract to drive the support arm to rotate upward; the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder extends to drive the fixing pin to disengage from the fixed position, the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder continues to extend to drive the fixing seat and the tool holder to rotate toward the far frame body side; or a fixing pin is provided at the far end of the support arm, and a fixed position corresponding to the fixing pin is provided on the fixing seat.

7. The floating suspension lawn mower according to claim 4, characterized in that: An arc-shaped slide plate is provided on the fixed seat, and the first floating rod and the second floating rod are universally hinged at the middle part of the support arm or near the tool holder side; the cylinder rod of the driving cylinder or the hydraulic cylinder rod of the driving hydraulic cylinder contracts and the fixed seat rotates, thereby driving the arc-shaped slide plate and the tool holder to rotate.

8. The floating suspension lawn mower according to claim 2, characterized in that: The first elastic component and the second elastic component are both return springs, and spring limiters are provided at the ends of the first elastic component and the second elastic component far from the support arms.

9. The floating suspension lawn mower according to claim 1 or 2, characterized in that: The end of the driving cylinder remote cylinder rod or the driving hydraulic cylinder remote hydraulic cylinder rod is hinged on the frame, and rotating shafts are provided on both sides of the first rotating support seat, and the rotating shafts can be rotatably fixed on the frame. A first limiting hole for the first floating rod to radially pass through is provided on the first rotating support seat, and the first floating rod drives the first rotating support seat to rotate through the first limiting hole and slide along the first limiting hole.

10. The floating suspension lawn mower according to claim 3, characterized in that: A spherical hinge is provided on the second universal support seat, a second limiting hole for the second floating rod to pass through is provided on the spherical hinge, a long hole is provided on the support arm, and the end of the second floating rod is hinged on the long hole.

11. The floating suspension lawn mower according to claim 1 or 2, characterized in that: The support arm is hinged on the frame body, a fixing ring is hinged on the frame body, the frame body is connected to an external tractor through the fixing ring, and the hinge point between the support arm and the frame body is higher than the fixing ring.

12. The floating suspension lawn mower according to claim 1 or 2, characterized in that: The support arm is fixed on the frame body through a connecting seat threaded connection, the support arm is hinged to the connecting seat, a long arc-shaped hole is provided on the connecting seat or the frame body, and the connecting seat is threadedly connected to the frame body through the long arc-shaped hole.

13. The floating suspension lawn mower according to claim 4, characterized in that: The transmission mechanism is a belt drive, and the eccentric connecting rod mechanism includes an eccentric shaft, a connecting rod and a rocker arm. An eccentric shaft through hole is provided on the fixed seat, and the small shaft end of the eccentric shaft passes through the eccentric shaft through the hole and is rotatably connected to the transmission mechanism. The large shaft end of the eccentric shaft cooperates with the end cover through a first bearing, and the large shaft end of the eccentric shaft is provided with an eccentric shaft end that cooperates with the connecting rod; the eccentric shaft end is hingedly connected to one end of the connecting rod through a second bearing, and the other end of the connecting rod is hingedly connected to the middle and lower part of the rocker arm; the upper end of the rocker arm is hingedly connected to the fixed seat through a third bearing, and the lower end of the rocker arm is provided with a tool holder mounting hole, and the tool holder mounting hole is connected to the movable knife.

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