Connecting structure for mowing machine and mowing machine

Abstract

The utility model discloses a connecting structure for a mower and the mower. The device comprises a driving module, a first connecting pipe used for being connected with a mowing machine main machine and a second connecting pipe used for being connected with a mowing machine tool bit, the outer wall of the first connecting pipe is sleeved with a connecting shell, the second connecting pipe can stretch into the first connecting pipe, and grabbing hooks are symmetrically arranged on the left side and the right side of the connecting shell. Notches are symmetrically formed in the left side and the right side of the second connecting pipe, the grappling hooks correspond to and are matched with the notches in a one-to-one mode, and the driving module is used for driving the ends of the two grappling hooks to stretch into or stretch out of the corresponding notches. According to the utility model, the suitable cutter head of the cutting machine can be replaced according to different use scenes, and the cutting machine is convenient and lower in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of lawn mowers, in particular to a connecting structure for lawn mowers and the lawn mower. Background Art

[0002] Lawn mowers are very important for developing agricultural mechanization, improving work efficiency, and improving agricultural production efficiency in a large agricultural country like ours. As an important tool in agricultural production, lawn mowers have the most direct impact on the yield of crops. Lawn mowers with different blades are required in different scenarios, but in the existing technology, the mainframe of the lawn mower and the blade of the lawn mower are not removable. Users need to choose a lawn mower with a suitable blade according to the usage scenario, which is very inconvenient and more costly. Summary of the invention

[0003] In order to solve the above technical problems, the utility model provides a connection structure for a lawn mower and a lawn mower, which can replace the applicable cutting machine head according to different usage scenarios, which is convenient and has lower cost.

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

[0005] The utility model discloses a connection structure for a lawn mower, comprising a driving module, a first connecting pipe for connecting to a mainframe of the lawn mower, and a second connecting pipe for connecting to a cutter head of the lawn mower, wherein a connecting shell is sleeved on an outer wall of the first connecting pipe, the second connecting pipe can be inserted into the first connecting pipe, grabbing hooks are symmetrically arranged on left and right sides of the connecting shell, and notches are symmetrically arranged on left and right sides of the second connecting pipe, the grabbing hooks correspond to and match the notches one by one, and the driving module is used to drive the ends of the two grabbing hooks to extend into / out of the corresponding notches.

[0006] In this solution, the second connecting tube connected to the lawn mower cutter head is inserted into the first connecting tube connected to the lawn mower main body, and the driving module drives the grab hooks symmetrically arranged on the left and right sides of the connecting shell to rotate toward the second connecting tube until the end of the grab hook extends into the corresponding notch on the second connecting tube, thereby locking the second connecting tube.

[0007] Preferably, the driving module includes a slider, which can slide axially along the first connecting tube, and a rotating shaft is symmetrically arranged in the connecting shell, the rotating shaft is perpendicular to the first connecting tube, the rotating shaft corresponds to the grab hook one by one, and the grab hook can rotate laterally along the corresponding rotating shaft, and guide blocks are symmetrically arranged on the left and right sides of the slider, and a guide hole that penetrates the first connecting tube is arranged at the position corresponding to the guide block of the first connecting tube, and the direction of the guide hole is consistent with the direction of the first connecting tube, and the guide block can slide along the corresponding guide hole, and the first connecting tube is also symmetrically arranged on the left and right sides, and the guide block is connected to the corresponding grab hook through the corresponding transmission structure, and a locking module is also provided in the first connecting tube, and the locking module is used to lock / unlock the slider, and when the slider slides in the first connecting tube, the corresponding grab hook is driven to rotate through the transmission structure.

[0008] Preferably, the transmission structure includes a rack and a gear rotatably connected to a rotating shaft, the grab hook is fixedly connected to the gear, the guide block extends out of the guide hole and is fixedly connected to the rack on the corresponding side, the direction of the rack is consistent with the direction of the first connecting tube, and the rack is meshed with the gear.

[0009] Preferably, the driving module further comprises a spring disposed in the first connecting tube, one end of the spring is fixedly connected to the top end of the first connecting tube, and the other end of the spring is fixedly connected to the slider.

[0010] Preferably, the locking module includes a top ball releasing device and an elastic top column arranged on the top of the slider, the top of the elastic top column is a hemispherical surface, a limiting hole is provided at the top of the first connecting tube corresponding to the position of the elastic top column, and the top ball releasing device is used to press down the elastic top column located in the limiting hole.

[0011] Preferably, the top ball release device includes a release member reset module and an annular groove arranged on the outer wall of the first connecting tube, the limiting hole is located on the bottom surface of the annular groove, and a C-shaped release member is slidably connected in the annular groove. The release member reset module is used to reset the release member so that the release member no longer presses down the elastic top column.

[0012] After the second connecting tube is inserted into the first connecting tube, the front end of the second connecting tube drives the slider in the first connecting tube to slide forward along the first connecting tube. When the slider slides, the spring is squeezed to cause the spring to accumulate force and deform. At the same time, the slider drives the guide blocks on both sides to slide forward along the corresponding guide holes. The guide blocks drive the corresponding racks to slide forward and drive the corresponding gears to rotate through the corresponding racks. The gears drive the corresponding grab hooks to rotate backward, so that the ends of the grab hooks extend into the corresponding notches on the second connecting tube. At the same time, the elastic top column on the slider extends into the limiting hole, the cylindrical surface of the elastic top column contacts the limiting hole for limiting, and the hemispherical surface on the top of the elastic top column extends out of the limiting hole and is located in the annular groove. At this time, the first connecting tube and the second connecting tube are locked, and the cutting machine head is installed.

[0013] Preferably, the release member reset module includes a reset slider arranged on the front side of the release member, an arc-shaped slide groove is provided on the front side of the annular groove corresponding to the position of the reset slider, the reset slider can slide along the arc-shaped slide groove, and a reset spring is provided between the arc-shaped slide groove and the reset slider.

[0014] Rotate the release piece counterclockwise to press the elastic top column down. When the release piece rotates, it drives the reset slider to slide in the arc-shaped slide groove, squeezing the reset spring. After the release piece presses the elastic top column down, the spring pushes the slider to pop the second connecting tube out of the first connecting tube, so that the cutting machine head is disassembled, and then the release piece is released. The reset slider on the front side of the release piece slides to the right under the action of the reset spring, driving the release piece to reset, so that the release piece is no longer located above the limit hole.

[0015] Preferably, the connection housing is provided with hook notches symmetrically on the left and right, and the hook notches correspond to and match the hooks one by one. The hook notches can expand the rotation angle of the hooks on the connection housing.

[0016] Preferably, the grab hook comprises a connecting plate and an arc hook, wherein the arc hook is arranged at the rear side of the connecting plate, the front side of the connecting plate is fixedly connected to the gear on the corresponding side, and the front side of the notch is provided with a rounded surface, wherein the rounded surface matches the arc hook on the corresponding side. When the slider moves backward to eject the second connecting tube from the first connecting tube, the rounded surface abuts against the arc hook on the corresponding side, and the slider pushes the two grab hooks to rotate through the rounded surface.

[0017] The utility model provides a lawn mower, comprising a lawn mower main body, a plurality of lawn mower cutter heads and the above-mentioned connecting structure for the lawn mower, wherein the lawn mower main body and the lawn mower cutter heads are detachably connected via the connecting structure.

[0018] The beneficial effects of the utility model are as follows: the driving module can drive the ends of the two grab hooks to extend into / out of the corresponding notches on the second connecting tube, so that the second connecting tube is locked / unlocked with the first connecting tube; the top ball release device can press down the elastic top column located in the limiting hole; the grab hook notch can expand the rotation angle of the grab hook on the connecting shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the first connecting pipe in the utility model;

[0021] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0022] Figure 4 It is a structural schematic diagram of the slider in the utility model;

[0023] Figure 5 It is a structural schematic diagram of the grab hook in the utility model;

[0024] Figure 6 It is a structural schematic diagram of the transmission structure in the utility model;

[0025] Figure 7 It is a structural schematic diagram of the release member in the utility model;

[0026] Figure 8 It is a structural schematic diagram of the lawn mower in the utility model.

[0027] In the figure: 1. first connecting tube, 11. guide hole, 12. arc-shaped slide groove, 2. second connecting tube, 21. notch, 211. rounded surface, 3. connecting shell, 31. grab hook, 32. rotating shaft, 33. grab hook notch, 4. slider, 41. guide block, 5. gear, 51. rack, 52. spring, 6. top ball release device, 61. elastic top column, 62. annular groove, 63. release member, 7. release member reset module, 71. reset slider, 72. reset spring, 8. first lawn mower cutter head, 9. second lawn mower cutter head, 10. third lawn mower cutter head. DETAILED DESCRIPTION

[0028] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0029] Embodiment: A connection structure for a lawn mower according to this embodiment, such as Figures 1 to 7 As shown, it includes a driving module, a first connecting pipe 1 for connecting to a main body of the lawn mower, and a second connecting pipe 2 for connecting to a cutter head of the lawn mower. A connecting shell 3 is sleeved on the outer wall of the first connecting pipe 1, and the second connecting pipe 2 can be inserted into the first connecting pipe 1. Grabbing hooks 31 are symmetrically provided on the left and right sides of the connecting shell 3, and notches 21 are symmetrically provided on the left and right sides of the second connecting pipe 2. The grabbing hooks 31 correspond to and match the notches 21 one by one.

[0030] The driving module includes a slider 4, which can slide axially along the first connecting tube 1. A rotating shaft 32 is symmetrically arranged in the connecting shell 3. The rotating shaft 32 is perpendicular to the first connecting tube 1. The rotating shaft 32 corresponds to the grab hook 31 one by one. The grab hook 31 can rotate laterally along the corresponding rotating shaft 32. Guide blocks 41 are symmetrically arranged on the left and right sides of the slider 4. A guide hole 11 that penetrates the first connecting tube 1 is arranged at a position corresponding to the guide block 41 of the first connecting tube 1. The direction of the guide hole 11 is consistent with the direction of the first connecting tube 1. The guide block 41 can slide along the corresponding guide hole 11. Transmission structures are also symmetrically arranged on the left and right sides of the first connecting tube 1. The guide block 41 is connected to the corresponding grab hook 31 through the corresponding transmission structure. A locking module is also arranged in the first connecting tube 1.

[0031] The transmission structure includes a rack 51 and a gear 5 rotatably connected to the rotating shaft 32, the catch 31 is fixedly connected to the gear 5, the guide block 41 extends out of the guide hole 11 and is fixedly connected to the rack 51 on the corresponding side, the direction of the rack 51 is consistent with the direction of the first connecting tube 1, and the rack 51 is meshed with the gear 5. The driving module also includes a spring 52 arranged in the first connecting tube 1, one end of the spring 52 is fixedly connected to the top of the first connecting tube 1, and the other end of the spring 52 is fixedly connected to the slider 4.

[0032] The locking module includes a top ball release device 6 and an elastic top column 61 arranged on the top of the slider 4. The top of the elastic top column 61 is a hemispherical surface. A limiting hole is provided at the top of the first connecting tube 1 corresponding to the position of the elastic top column 61. The top ball release device 6 includes a release piece reset module 7 and an annular groove 62 arranged on the outer wall of the first connecting tube 1. The limiting hole is located on the annular groove 62. A C-shaped release piece 63 is slidably connected in the annular groove 62. The release piece reset module 7 includes a reset slider 71 arranged on the front side of the release piece 63. An arc-shaped slide groove 12 is provided on the front side of the annular groove 62 corresponding to the position of the reset slider 71. The reset slider 71 can slide along the arc-shaped slide groove 12. A reset spring 72 is provided between the arc-shaped slide groove 12 and the reset slider 71.

[0033] The connecting shell 3 is symmetrically provided with hook notches 33 , and the hook notches 33 correspond to and match the hooks 31 one by one.

[0034] The grab hook 31 includes a connecting plate 311 and an arc hook 312. The arc hook 312 is arranged on the rear side of the connecting plate 311. The front side of the connecting plate 311 is fixedly connected to the gear 5 on the corresponding side. The front side of the notch 21 is provided with a rounded surface 211, and the rounded surface 211 matches the arc hook 312 on the corresponding side.

[0035] When the first connecting tube needs to be connected to the second connecting tube, the second connecting tube connected to the lawn mower cutter head is inserted into the first connecting tube connected to the lawn mower main unit, and the front end of the second connecting tube drives the slider in the first connecting tube to slide forward along the first connecting tube. When the slider slides, the spring is squeezed to cause the spring to accumulate force and deform. At the same time, the slider drives the guide blocks on both sides to slide forward along the corresponding guide holes. The guide blocks drive the corresponding racks to slide forward and drive the corresponding gears to rotate through the corresponding racks. The gears drive the corresponding grab hooks to rotate backward, so that the arc-shaped hooks in the grab hooks extend into the corresponding notches on the second connecting tubes and resist against the rounded surfaces in the corresponding notches. At the same time, the elastic top column on the slider extends into the limiting hole, and the hemispherical surface on the top of the elastic top column extends out of the limiting hole and is limited by the limiting hole. At this time, the first connecting tube is locked with the second connecting tube, and the cutting machine cutter head is installed.

[0036] When it is necessary to unlock the first connecting tube and the second connecting tube, the releasing piece is rotated to the left to rotate counterclockwise around the annular groove. When the releasing piece rotates, the releasing piece is squeezed with the hemispherical surface on the top of the elastic top column, and the elastic top column is pressed down through the hemispherical surface, and then the spring recovers, and the force of the spring deformation is released to move the slider backward. When the slider moves backward, the hemispherical surface on the top of the elastic top column is squeezed with the inner tube wall of the first connecting tube, and the hemispherical surface drives the elastic top column to retract into the slider, and the sliding movement backward drives the racks on both sides to move backward, thereby driving the two grab hooks to rotate in the opposite direction so that the ends of the grab hooks extend out of the corresponding notches on the second connecting tube, and the slider moves backward to pop the second connecting tube out of the first connecting tube. At this time, the second connecting tube is unlocked from the first connecting tube.

[0037] When the release piece is rotated counterclockwise to the left, the release piece drives the reset slider to slide left in the arc-shaped slide groove, squeezing the reset spring. The release piece presses down the elastic top column and the rear spring pushes the slider to pop the second connecting tube out of the first connecting tube, so that the cutting machine head is disassembled. Then the release piece is released, and the reset slider on the front side of the release piece slides to the right under the action of the reset spring, driving the release piece to reset, so that the release piece is no longer located above the limit hole.

[0038] When the slider moves backward to eject the second connecting tube from the first connecting tube, the rounded surface abuts against the arc-shaped hook on the corresponding side, and the slider pushes the two grabbing hooks to rotate through the rounded surface.

[0039] A lawn mower according to this embodiment, such as Figure 8 As shown, it includes a main lawn mower body, a first lawn mower cutter head 8, a second lawn mower cutter head 9, a third lawn mower cutter head 10 and the above-mentioned connecting structure for the lawn mower. The main lawn mower body is detachably connected to the first lawn mower cutter head, the second lawn mower cutter head, and the third lawn mower cutter head through the connecting structure.

[0040] In this solution, the main engine of the lawn mower needs to replace different cutting machine heads to cope with different scenarios. When the cutting machine head needs to be installed, the second connecting tube connected to the lawn mower head is inserted into the first connecting tube connected to the main engine of the lawn mower. As the second connecting tube is inserted, the arc-shaped hook in the grab hook extends into the corresponding notch on the second connecting tube and abuts against the rounded surface in the corresponding notch. At this time, the first connecting tube and the second connecting tube are locked.

[0041] When the installed cutting machine head needs to be pushed out, the release piece is rotated to the left so that the release piece is squeezed with the hemispherical surface on the top of the elastic top column, pressing the elastic top column downward, and then the spring recovers, releasing the force of the spring deformation to move the slider backward. When the slider moves backward, the hemispherical surface on the top of the elastic top column is squeezed with the inner tube wall of the first connecting tube, and the hemispherical surface drives the elastic top column to retract into the slider, and while sliding backward, it drives the racks on both sides to move backward, thereby driving the two grab hooks to rotate in the opposite direction so that the ends of the grab hooks extend out of the corresponding notches on the second connecting tube, and the slider moves backward to pop the second connecting tube out of the first connecting tube. At this time, the second connecting tube is unlocked from the first connecting tube, the cutting machine head is pushed out completely, and other cutting machine heads can be installed in the first connecting tube.

Claims

1. A connection structure for a lawn mower, characterized in that: The invention comprises a driving module, a first connecting pipe (1) for connecting to a main body of a lawn mower, and a second connecting pipe (2) for connecting to a cutter head of the lawn mower, wherein a connecting shell (3) is sleeved on the outer wall of the first connecting pipe (1), the second connecting pipe (2) can be inserted into the first connecting pipe (1), grabbing hooks (31) are symmetrically arranged on the left and right sides of the connecting shell (3), and notches (21) are symmetrically arranged on the left and right sides of the second connecting pipe (2), the grabbing hooks (31) correspond to and match the notches (21) one by one, and the driving module is used to drive the ends of the two grabbing hooks (31) to extend into / out of the corresponding notches.

2. The connecting structure for a lawn mower according to claim 1, characterized in that: The driving module comprises a slider (4), the slider (4) being axially slidable along the first connecting tube (1), a rotating shaft (32) being symmetrically arranged in the connecting shell (3), the rotating shaft (32) being perpendicular to the first connecting tube (1), the rotating shaft (32) corresponding to the grab hook (31) in a one-to-one manner, the grab hook (31) being transversely rotatable along the corresponding rotating shaft (32), a guide block (41) being symmetrically arranged on the left and right sides of the slider (4), a guide block (41) penetrating the first connecting tube (1) being arranged at a position corresponding to the guide block (41) The guide hole (11) is arranged in a direction consistent with that of the first connecting tube (1); the guide block (41) can slide along the corresponding guide hole (11); transmission structures are symmetrically arranged on the left and right sides of the first connecting tube (1); the guide block (41) is connected to the corresponding grab hook (31) through the corresponding transmission structure; a locking module is also arranged in the first connecting tube (1); the locking module is used to lock / unlock the slider (4); when the slider slides in the first connecting tube, the corresponding grab hook is driven to rotate through the transmission structure.

3. The connecting structure for a lawn mower according to claim 2, characterized in that: The transmission structure comprises a rack (51) and a gear (5) rotatably connected to a rotating shaft (32); the grab hook (31) is fixedly connected to the gear (5); the guide block (41) extends out of the guide hole (11) and is fixedly connected to the rack (51) on the corresponding side; the direction of the rack (51) is consistent with the direction of the first connecting pipe (1); and the rack (51) is meshed with the gear (5).

4. The connecting structure for a lawn mower according to claim 2 or 3, characterized in that: The driving module further comprises a spring (52) arranged in the first connecting tube (1), one end of the spring (52) being fixedly connected to the top end of the first connecting tube (1), and the other end of the spring (52) being fixedly connected to the slider (4).

5. The connecting structure for a lawn mower according to claim 4, characterized in that: The locking module comprises a top ball release device (6) and an elastic top column (61) arranged on the top of the slider (4); the top of the elastic top column (61) is a hemispherical surface; a limiting hole is provided at the top of the first connecting tube (1) at a position corresponding to the elastic top column (61); and the top ball release device (6) is used to press down the elastic top column (61) located in the limiting hole.

6. The connecting structure for a lawn mower according to claim 5, characterized in that: The top ball release device (6) comprises a release member reset module (7) and an annular groove (62) arranged on the outer wall of the first connecting tube (1), the limiting hole is located on the bottom surface of the annular groove (62), a C-shaped release member (63) is slidably connected in the annular groove (62), and the release member reset module (7) is used to reset the release member (63) so that the release member (63) no longer presses down the elastic top column (61).

7. The connecting structure for a lawn mower according to claim 6, characterized in that: The release member reset module (7) comprises a reset slide block (71) arranged on the front side of the release member (63); an arcuate slide groove (12) is arranged on the front side of the annular groove (62) corresponding to the position of the reset slide block (71); the reset slide block (71) can slide along the arcuate slide groove (12); and a reset spring (72) is arranged between the arcuate slide groove (12) and the reset slide block (71).

8. The connecting structure for a lawn mower according to claim 1, characterized in that: The connection shell (3) is symmetrically provided with catch hook notches (33), and the catch hook notches (33) correspond to and match the catch hooks (31) one by one.

9. The connecting structure for a lawn mower according to claim 3, characterized in that: The grab hook (31) comprises a connecting plate (311) and an arc-shaped hook (312); the arc-shaped hook (312) is arranged on the rear side of the connecting plate (311); the front side of the connecting plate (311) is fixedly connected to the gear (5) on the corresponding side; the front side of the notch (21) is provided with a rounded surface (211); the rounded surface (211) matches the arc-shaped hook (312) on the corresponding side.

10. A lawn mower, comprising a main lawn mower body, a plurality of lawn mower heads, and a connecting structure for a lawn mower according to any one of claims 1 to 9, characterized in that: The lawn mower main body and the lawn mower cutter head are detachably connected via a connecting structure.

Images