Shearing device, pruner boom and garden pruner

Abstract

The application discloses a shearing device, a pruning machine cantilever and a garden pruning machine, wherein the shearing device comprises a fixed seat, a first shear arranged on the fixed seat, the first shear having a first blade, a second shear movably arranged on the fixed seat, the second shear having a second blade, the second blade being close to the first blade to shear when the second shear is close to the first shear, the second blade being away from the first blade when the second shear is away from the first shear, a driving mechanism connected with the second shear to drive the second shear to be close to or away from the first shear, and a rotating mechanism connected with the fixed seat to drive the fixed seat to rotate. The shearing device can generate a larger shearing force, and can improve shearing efficiency and reduce labor cost.

Description

Technical Field

[0001] This invention relates to the field of garden construction technology, specifically to a shearing device, a pruning cantilever, and a garden pruning machine. Background Technology

[0002] Gardeners often use aerial pruning shears to trim the branches of garden trees, ensuring that the trunk height and branch length are appropriate, reducing the obstruction of the branches and leaves to the driver's view, and making it easier for people to rest in the shade.

[0003] During the pruning of tree branches at height, gardeners need to control the shear blades of the aerial pruning shears through the power-enhancing mechanism, and the shear blades work together to prune the branches.

[0004] However, due to the limited strength of garden staff, it is impossible to cut thick branches using aerial pruning tools. Furthermore, the labor intensity of garden staff is high during the process of pruning aerial branches, requiring multiple garden staff to work together, resulting in high labor costs and low pruning efficiency. Summary of the Invention

[0005] The present invention aims to at least partially solve one of the technical problems in the related art.

[0006] Therefore, in a first aspect, embodiments of the present invention provide a shearing device that can generate a large shearing force and improve shearing efficiency while reducing labor costs.

[0007] Secondly, embodiments of the present invention provide a pruning cantilever that includes the shearing device as described in the first aspect above.

[0008] Thirdly, embodiments of the present invention provide a garden trimmer including the trimmer cantilever as described in the second aspect above.

[0009] A shearing device according to a first aspect of the present invention includes: a fixed base, a first shear, a second shear, a driving mechanism, and a rotating mechanism. The first shear is disposed on the fixed base and has a first cutting edge; the second shear is movably disposed on the fixed base and has a second cutting edge. When the second shear approaches the first shear, the second cutting edge approaches the first cutting edge to perform shearing; when the second shear moves away from the first shear, the second cutting edge moves away from the first cutting edge. The driving mechanism is connected to the second shear to drive the second shear to approach and move away from the first shear; the rotating mechanism is connected to the fixed base to drive the fixed base to rotate.

[0010] The shearing device of the first aspect of the present invention drives a first shear and a second shear to approach each other to cut branches via a drive mechanism, generating a large shearing force, thereby enabling the cutting of relatively thick branches. During the shearing process, the workload of gardeners is low, and the pruning efficiency is high. Furthermore, the shearing device of the first aspect of the present invention allows for adjustment of the first and second shears via a rotation mechanism, facilitating gardeners to cut appropriate parts of the branches during the pruning process, thereby further improving pruning efficiency.

[0011] In some embodiments, the driving mechanism is a first hydraulic cylinder, the fixed base includes a fixed cylinder with a fixed hole, the first hydraulic cylinder is disposed in the fixed hole, the second shear is connected to the first telescopic end of the first hydraulic cylinder, and the first telescopic end performs telescopic movement to drive the second shear to move closer to or away from the first shear.

[0012] In some embodiments, the shearing device further includes a guide rod, the fixed base includes a sliding portion connected to the fixed cylinder, the sliding portion is provided with a groove, the groove is connected to the outside at both ends of the guide rod in the length direction, the guide rod is movably disposed in the groove, the first end of the guide rod is connected to the first telescopic end, the second end of the guide rod is connected to the second shear, the first shear is located between the first end and the second end in the length direction of the guide rod, the first shear is disposed in the sliding portion, the groove is open at the end where the first shear is located, the length direction of the guide rod is consistent with the length direction of the groove, the first telescopic end performs telescopic movement to drive the second shear to move closer to or away from the first shear in the length direction of the guide rod, a retaining ring is provided on the outer peripheral wall of the fixed cylinder, and the end of the sliding portion near the first telescopic end in the length direction of the guide rod abuts against the retaining ring.

[0013] In some embodiments, the shearing device further includes a positioning disk, the fixed seat is rotatably disposed on the positioning disk, the rotary mechanism includes a rotary motor, the rotary motor is connected to the positioning disk, the positioning disk is provided with a positioning hole, the output shaft of the rotary motor passes through the positioning hole, and the output shaft is connected to the fixed seat to drive the fixed seat to rotate around the rotation axis of the output shaft.

[0014] In some embodiments, the rotary mechanism further includes a fixed disk, the rotary motor is connected to the fixed disk, the fixed disk is connected to the positioning disk, and the shearing device further includes a retaining ring, the retaining ring including a fixing part and a retaining ring part, the fixing part being fixedly connected to the fixing seat, the retaining ring part being rotatably disposed on the edge of the positioning disk, the positioning disk being located between the retaining ring part and the fixing seat in the thickness direction of the positioning disk, the retaining ring part and the fixed disk being located on the same side of the positioning disk, the retaining ring part being provided with a retaining ring hole, and the fixed disk being disposed in the retaining ring hole.

[0015] In some embodiments, the fixing base includes a connecting plate, the connecting plate being provided with a rotating groove connected to the output shaft, the connecting plate being provided with a plurality of first threaded holes along the circumferential direction of the output shaft, and the fixing part being provided with a plurality of second threaded holes along the circumferential direction of the output shaft, the second threaded holes corresponding one-to-one with the first threaded holes, the first threaded holes and the second threaded holes engaging with each other via threaded components to fix the fixing part to the fixing base.

[0016] In some embodiments, the slewing mechanism further includes a connecting plate, a connecting rod, a bucket connecting rod, and a fourth hydraulic cylinder. The third end of the connecting plate is connected to the positioning plate, the fourth end of the connecting plate is hinged to the connecting rod, the fifth end of the bucket connecting rod is hinged to the connecting plate, and the fifth end of the bucket connecting rod is located between the third end and the fourth end to drive the connecting plate to rotate about the hinge axis between the fourth end and the connecting rod. The fourth telescopic end of the fourth hydraulic cylinder is connected to the sixth end of the bucket connecting rod.

[0017] In some embodiments, the slewing mechanism further includes a rotating rod, one end of which is hinged to the sixth end of the bucket connecting rod, and the other end of which is hinged to the connecting rod.

[0018] A second aspect embodiment of the trimmer arm of the present invention includes: a connecting arm, a shearing device as described in the first aspect above, and a second hydraulic cylinder. The shearing device is rotatably disposed on the connecting arm; the second hydraulic cylinder is disposed on the connecting arm, and the second telescopic end of the second hydraulic cylinder is connected to the shearing device to drive the shearing device to rotate relative to the connecting arm.

[0019] The pruning arm of the second aspect embodiment of the present invention drives the first and second shears to approach each other to cut branches via a drive mechanism, generating a large shearing force, thus enabling the cutting of relatively thick branches. During the pruning process, the workload of gardeners is low, and the pruning efficiency is high. Furthermore, the first and second shears are adjusted via a rotary mechanism, allowing gardeners to cut appropriate parts of the branches during the pruning process, further improving pruning efficiency. The second telescopic end of the second hydraulic cylinder extends and retracts to drive the shearing device to rotate around the hinge axis between the shearing device and the connecting arm, thereby adjusting the positions of the first and second shears to meet the shearing requirements, further improving pruning efficiency.

[0020] A garden pruning machine according to a third aspect of the present invention includes: a drive assembly, a pruning machine body, a pruning machine cantilever as described in the second aspect above, and a third hydraulic cylinder. The pruning machine body is rotatably disposed on the drive assembly; the pruning machine cantilever is rotatably disposed on the pruning machine body; and the third telescopic end of the third hydraulic cylinder is connected to the pruning machine cantilever to drive the pruning machine cantilever to rotate relative to the pruning machine body.

[0021] The garden pruning machine of the third aspect of the present invention drives the first and second shears to approach each other to cut branches via a drive mechanism, generating a large shearing force, thereby enabling the cutting of relatively thick branches. During the pruning process, the workload of gardeners is low, and the pruning efficiency is high. Furthermore, the first and second shears are adjusted via a rotary mechanism, allowing gardeners to cut appropriate parts of the branches during the pruning process, further improving pruning efficiency. The second telescopic end of the second hydraulic cylinder extends and retracts to drive the shearing device to rotate around the hinge axis between the shearing device and the connecting arm, thereby adjusting the positions of the first and second shears to meet the pruning requirements, further improving pruning efficiency. The pruning machine body is rotatable relative to the drive assembly, allowing the shearing device to rotate around the drive assembly, further adjusting the positions of the first and second shears to meet the positional requirements for cutting branches. The third telescopic end of the third hydraulic cylinder extends and retracts to drive the pruning machine cantilever to raise or lower, further adjusting the positions of the first and second shears to meet the positional requirements for cutting branches. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a garden trimming machine according to an embodiment of the present invention.

[0023] Figure 2 This is a partial schematic diagram of the cantilever arm of the trimmer according to an embodiment of the present invention.

[0024] Figure 3This is a schematic diagram of the fixing base and the first shear in an embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the fixing ring according to an embodiment of the present invention.

[0026] Figure label:

[0027] 1. Fixed base; 2. First shear; 3. Second shear; 4. Drive mechanism; 5. Rotation mechanism; 6. Connecting arm; 7. Second hydraulic cylinder; 8. Drive assembly; 9. Trimmer body; 10. Third hydraulic cylinder;

[0028] 11. Fixed cylinder; 111. Fixed hole; 112. Retaining ring; 12. Sliding part; 121. Slide groove; 13. Fixed retaining ring; 131. Fixed part; 1311. Second threaded hole; 132. Retaining ring part; 1321. Retaining ring hole; 14. Connecting plate; 141. First threaded hole; 142. Rotating groove;

[0029] 21. First cutting edge;

[0030] 31. Second cutting edge; 32. Guide rod; 321. First end; 322. Second end;

[0031] 41. First hydraulic cylinder; 411. First telescopic end; 412. First fixed end;

[0032] 51. Positioning plate; 511. Positioning hole; 52. Rotary motor; 521. Output shaft; 53. Fixed plate; 54. Connecting plate; 541. Third end; 542. Fourth end; 55. Connecting rod; 56. Bucket connecting rod; 561. Fifth end; 562. Sixth end; 57. Rotating rod; 58. Fourth hydraulic cylinder; 581. Fourth telescopic end; 582. Fourth fixed end;

[0033] 71. Second telescopic end; 72. Second fixed end;

[0034] 101. Third telescopic end; 102. Third fixed end. Detailed Implementation

[0035] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0036] The shearing device of the first aspect of the present invention, the pruning cantilever of the second aspect of the present invention, and the garden pruning machine of the third aspect of the present invention are described below with reference to the accompanying drawings.

[0037] The shearing device according to the first aspect of the present invention, such as Figure 1 and Figure 2As shown, the assembly includes a fixed base 1, a first shear 2, a second shear 3, a drive mechanism 4, and a rotation mechanism 5. The first shear 2 is mounted on the fixed base 1 and has a first blade 21. The second shear 3 is movably mounted on the fixed base 1 and has a second blade 31. When the second shear 3 approaches the first shear 2, the second blade 31 approaches the first blade 21 to perform cutting; when the second shear 3 moves away from the first shear 2, the second blade 31 moves away from the first blade 21. The drive mechanism 4 is connected to the second shear 3 to drive the second shear 3 to approach and move away from the first shear 2. The rotation mechanism 5 is connected to the fixed base 1 to drive the fixed base 1 to rotate.

[0038] When it is necessary to cut branches, the rotating mechanism 5 drives the fixed base 1 to rotate so that the first shear 2 and the second shear 3 are in a suitable position to cut the branches. The driving mechanism 4 drives the second shear 3 to move closer to the first shear 2 so that the second blade 31 moves closer to the first blade 21 to cut the branches.

[0039] After the branch is cut, the second shear 3 is driven away from the first shear 2 by the drive mechanism 4, and the fixed base 1 is driven to rotate by the rotation mechanism 5 so that the first shear 2 and the second shear 3 are in the next position suitable for cutting the branch.

[0040] The shearing device of the first aspect of the present invention drives a first shear and a second shear to approach each other to cut branches via a drive mechanism, generating a large shearing force, thereby enabling the cutting of relatively thick branches. During the shearing process, the workload of gardeners is low, and the pruning efficiency is high. Furthermore, the shearing device of the first aspect of the present invention allows for adjustment of the first and second shears via a rotation mechanism, facilitating gardeners to cut appropriate parts of the branches during the pruning process, thereby further improving pruning efficiency.

[0041] In some embodiments, such as Figure 1 and Figure 2 As shown, the driving mechanism 4 is a first hydraulic cylinder 41, the fixed base 1 includes a fixed cylinder 11, the fixed cylinder 11 is provided with a fixed hole 111, the first hydraulic cylinder 41 is provided in the fixed hole 111, the second shear 3 is connected to the first telescopic end 411 of the first hydraulic cylinder 41, the first telescopic end 411 performs telescopic movement to drive the second shear 3 to approach or move away from the first shear 2.

[0042] The second shear 3 is driven to approach the first shear 1 by the telescopic action of the first telescopic end 411 to cut the tree branch. During the cutting process, the first hydraulic cylinder 41 drives the second shear 3 to generate a cutting force of up to 15 tons, which can cut thick tree branches.

[0043] It should be noted that the shearing force generated by the first hydraulic cylinder 41 driving the second shear 3 to reach 15 tons means that the kilogram force generated by the first hydraulic cylinder 41 driving the second shear 3 to reach 15 tons.

[0044] Specifically, such as Figure 1 and Figure 2 As shown, the first fixed end 412 is disposed in the fixed hole 111 and fixed in the fixed cylinder 11 so that the first telescopic end 411 can drive the second shear 3 to cut the branch.

[0045] Optionally, the first hydraulic cylinder 41 is an oil cylinder.

[0046] In some embodiments, such as Figure 1 , Figure 2 and Figure 3 As shown, the shearing device also includes a guide rod 32. The fixed base 1 includes a sliding part 12, which is connected to the fixed cylinder 11. The sliding part 12 is provided with a groove 121. The guide rod 32 is movably disposed in the groove 121. The two ends of the groove 121 in the length direction of the guide rod 32 are connected to the outside so that the first end 321 and the second end 322 of the guide rod 32 can be located outside the groove 121. The first end 321 and the second end 322 are the two opposite ends of the guide rod 32 in the length direction of the guide rod 32. The first end 321 of the guide rod 32 is connected to the first telescopic end 411, and the second end 322 of the guide rod 32 is connected to the second shear 3 so as to drive the second shear 3 to move.

[0047] The first shear 2 is located between the first end 321 and the second end 322 along the length of the guide rod 32. The first shear 2 is disposed on the sliding part 12. The groove 121 is open at the end where the first shear 2 is located to avoid interference with the second shear 3. That is, the groove 121 is open at the end where the first shear 2 is located to avoid hindering the movement of the first shear 2 as the second shear 3 approaches or moves away from the first shear 2. The length direction of the guide rod 32 is consistent with the length direction of the groove 121. The first telescopic end 411 performs telescopic movement to drive the second shear 3 to approach or move away from the first shear 2 along the length direction of the guide rod 32. That is, the first telescopic end 411 drives the guide rod 32 to slide relative to the groove 121 along the length direction of the guide rod 32 to drive the second shear 3 to approach or move away from the first shear 2 along the length direction of the guide rod 32.

[0048] A retaining ring 112 is provided on the outer peripheral wall of the fixed cylinder 11, and the sliding part 12 abuts against the retaining ring 112 at one end of the guide rod 32 near the first telescopic end 411 in the length direction.

[0049] The first hydraulic cylinder 41 drives the second shear 3 to generate a large shearing force. When the first shear 2 and the second shear 3 are shearing, the first shear 2 exerts a force on the sliding part 12. The retaining ring 112 abuts against the sliding part 12 at the end of the guide rod 32 near the first telescopic end 411 in the length direction to bear the force of the first shear 2.

[0050] As an example, the length direction of the guide rod 32 is as follows: Figure 1 As shown at point A in the middle.

[0051] Specifically, such as Figure 1 and Figure 3 As shown, the first shear 1 and the sliding part 12 are integrally formed parts.

[0052] In some embodiments, the shearing device further includes a positioning disk 51, a fixed seat 1 is rotatably disposed on the positioning disk 51, and a rotary mechanism 5 includes a rotary motor 52 connected to the positioning disk 51. The positioning disk 51 is provided with a positioning hole 511, and the output shaft 521 of the rotary motor 52 passes through the positioning hole 511. The output shaft 521 is connected to the fixed seat 1 to drive the fixed seat 1 to rotate around the rotation axis of the output shaft 521, thereby enabling the first shear 2 and the second shear 3 to rotate around the rotation axis of the output shaft 521, so that the positions of the first shear 2 and the second shear 3 in the circumferential direction of the rotation axis of the output shaft 521 can be adjusted.

[0053] In other words, the positioning disk 51 is connected to the rotary motor 52 to fix the rotary motor 52. When the rotary motor 52 drives the fixed seat 1 to rotate, the fixed seat 1 rotates relative to the positioning disk 51.

[0054] When cutting branches, the first shears 2 and the second shears 3 are moved away from each other, and the rotation axis of the output shaft 521 of the rotary motor 52 corresponds to the branch. The rotary motor 52 is driven to adjust the position of the first shears 2 and the second shears 3 in the circumferential direction of the rotation axis of the output shaft 521 so that the first shears 2 and the second shears 3 are in a suitable position for cutting branches.

[0055] In some embodiments, such as Figure 1 , Figure 2 and Figure 4 As shown, the rotary mechanism 5 also includes a fixed disk 53, the rotary motor 52 is connected to the fixed disk 53, the fixed disk 53 is connected to the positioning disk 51, and the shearing device also includes a fixed retaining ring 13. The fixed retaining ring 13 includes a fixed part 131 and a retaining ring part 132. The fixed part 131 is fixedly connected to the fixed seat 1, and the retaining ring part 132 is rotatably disposed on the edge of the positioning disk 51. The positioning disk 51 is located between the retaining ring part 132 and the fixed seat 1 in the thickness direction of the positioning disk 51. The retaining ring part 132 and the fixed disk 53 are located on the same side of the positioning disk 51. The retaining ring part 132 is provided with a retaining ring hole 1321, and the fixed disk 53 is disposed in the retaining ring hole 1321.

[0056] The retaining ring 132 abuts against the edge of the positioning disk 51 so that the positioning disk 51 is fixed between the retaining rings 132. When the rotary motor 52 drives the fixed base 1 to rotate, the retaining ring 13 and the fixed base 1 rotate relative to the positioning disk 51.

[0057] The fixed plate 53 is connected to the positioning plate 51 and the fixed plate 53 is located in the retaining ring hole 1321. That is to say, the fixed plate 53 and the rotary motor 52 can be removed by disconnecting the connection between the fixed plate 53 and the positioning plate 51, which facilitates the installation and disassembly of the rotary motor 52.

[0058] Specifically, such as Figure 1 As shown, two retaining rings 13 are provided. Each retaining ring 13 fixes half of the circumference of the positioning disk 51. The two retaining rings 13 cooperate with each other so that the two ring portions 132 abut against the edge of the positioning disk 51, thereby fixing the positioning disk 51 between the ring portions 132. This can prevent the rotary motor 52 and the fixed disk 53 from interfering with the retaining rings 13 during the installation process, and facilitates the installation or removal of the retaining rings 13, thereby facilitating the installation or removal of the positioning disk 51.

[0059] In some embodiments, such as Figure 1 and Figure 2 As shown, the fixed base 1 includes a connecting plate 14, which is provided with a rotating groove 142. The rotating groove 142 is connected to the output shaft 521 so that the output shaft 521 can drive the fixed base 1 to rotate around the output axis of the rotating shaft 521. The connecting plate 14 is provided with a plurality of first threaded holes 141 along the circumferential direction of the output shaft 521. The fixed part 131 is provided with a plurality of second threaded holes 1311 along the circumferential direction of the output shaft 521. The second threaded holes 1311 correspond one-to-one with the first threaded holes 141. The first threaded holes 141 and the second threaded holes 1311 are engaged with each other by threaded parts so that the fixed part 131 is fixedly connected to the fixed base 1. That is, the connecting plate 14 is threadedly connected to the fixed part 131.

[0060] Specifically, such as Figure 3 As shown, the connecting plate 14, the fixed cylinder 11, the sliding part 12 and the first shear 2 are integrally formed parts.

[0061] In some embodiments, the slewing mechanism 5 further includes a connecting plate 54, a connecting rod 55, a bucket connecting rod 56, and a fourth hydraulic cylinder 58. The third end 541 of the connecting plate 54 is connected to the positioning plate 51, the fourth end 542 of the connecting plate 54 is hinged to the connecting rod 55, the fifth end 561 of the bucket connecting rod 56 is hinged to the connecting plate 54, and the fifth end 561 of the bucket connecting rod 56 is located between the third end 541 and the fourth end 542 to drive the connecting plate 54 to rotate about the hinge axis between the fourth end 542 and the connecting rod 55. The fourth telescopic end 581 of the fourth hydraulic cylinder 58 is connected to the sixth end 562 of the bucket connecting rod 56.

[0062] The third end 541 and the fourth end 542 are the two opposite ends of the connecting plate 54 along its length. The fifth end 561 and the sixth end 562 are the two opposite ends of the bucket connecting rod 56 along its length.

[0063] The fifth end 561 of the bucket connecting rod 56 is located between the third end 541 and the fourth end 542 in the length direction of the connecting plate 54 to drive the connecting plate 54 to rotate around the hinge axis of the fourth end 542 and the connecting rod 55, thereby driving the first shear 2 and the second shear 3 to rotate around the hinge axis of the fourth end 542 and the connecting rod 55, so that the position of the first shear 2 and the second shear 3 in the circumferential direction of the hinge axis of the fourth end 542 and the connecting rod 55 can be adjusted.

[0064] Specifically, such as Figure 1 As shown, the fourth fixed end 582 of the fourth hydraulic cylinder 58 is disposed on the connecting rod 55.

[0065] Furthermore, such as Figure 2 and Figure 4 As shown, there are two connecting plates 54, which are located on both sides of the rotary motor 52. There are also two bucket connecting rods 56, one of which is hinged to one connecting plate 54 and the other is hinged to another connecting plate 54, thereby increasing the stability of the bucket connecting rods 56 when driving the connecting plates 54 to move.

[0066] In some embodiments, the slewing mechanism 5 further includes a rotating rod 57, one end of which is hinged to the sixth end 562 of the bucket connecting rod 56, and the other end of which is hinged to the connecting rod 55.

[0067] When the fourth telescopic end 581 retracts, during the movement of the bucket connecting rod 56, the sixth end 562 tends to approach the hinge axis between the corresponding other end of the rotating rod 57 and the connecting rod 55. The connecting rod 55 supports the sixth end 562 of the bucket connecting rod 56, so that the hinge axis between the corresponding other end of the rotating rod 57 and the connecting rod 55 and the sixth end 562 of the bucket connecting rod 56 maintain a fixed distance, thus preventing the sixth end 562 from approaching the hinge axis between the corresponding other end of the rotating rod 57 and the connecting rod 55 during the movement of the bucket connecting rod 56, making the movement of the bucket connecting rod 56 more stable.

[0068] Furthermore, if the sixth end 562 approaches the hinge axis between the corresponding other end of the rotating rod 57 and the connecting rod 55 during the movement of the bucket connecting rod 56, the partial contraction action of the fourth telescopic end 581 when it retracts will be used to drive the sixth end 562 to approach the hinge axis between the corresponding other end of the rotating rod 57 and the connecting rod 55. In other words, the contraction action that drives the sixth end 562 to approach the hinge axis between the corresponding other end of the rotating rod 57 and the connecting rod 55 is an ineffective contraction action. In other words, when the sixth end 562 approaches the hinge axis between the corresponding other end of the rotating rod 57 and the connecting rod 55 during the movement of the bucket connecting rod 56, the fourth telescopic end 581 needs to retract a longer distance so that the rotation angle of the connecting plate 54 around the hinge axis between the fourth end 542 and the connecting rod 55 is equal to the rotation angle of the connecting plate 54 around the hinge axis between the fourth end 542 and the connecting rod 55 when a fixed distance is maintained between the hinge axis between the corresponding other end of the rotating rod 57 and the connecting rod 55 and the sixth end 562 of the bucket connecting rod 56.

[0069] In other words, the connecting rod 55 can also reduce the retraction distance of the fourth telescopic end 581.

[0070] When the fourth telescopic end 581 extends, during the movement of the bucket connecting rod 56, the sixth end 562 tends to move away from the hinge axis between the corresponding other end of the rotating rod 57 and the connecting rod 55. The connecting rod 55 supports the sixth end 562 of the bucket connecting rod 56, so that the hinge axis between the corresponding other end of the rotating rod 57 and the connecting rod 55 and the sixth end 562 of the bucket connecting rod 56 maintain a fixed distance, thus preventing the sixth end 562 from moving away from the hinge axis between the corresponding other end of the rotating rod 57 and the connecting rod 55 during the movement of the bucket connecting rod 56, making the movement of the bucket connecting rod 56 more stable.

[0071] Furthermore, if the sixth end 562 moves away from the hinge axis between the corresponding other end of the rotating rod 57 and the connecting rod 55 during the movement of the bucket connecting rod 56, the partial extension of the fourth telescopic end 581 will be used to drive the sixth end 562 away from the hinge axis between the corresponding other end of the rotating rod 57 and the connecting rod 55. In other words, the extension action acting on the sixth end 562 to drive it away from the hinge axis between the corresponding other end of the rotating rod 57 and the connecting rod 55 is an ineffective extension action. During the movement, when the sixth end 562 moves away from the hinge axis between the corresponding other end of the rotating rod 57 and the connecting rod 55, the fourth telescopic end 581 needs to extend a longer distance so that the rotation angle of the connecting plate 54 around the hinge axis between the fourth end 542 and the connecting rod 55 is equal to the rotation angle of the connecting plate 54 around the hinge axis between the fourth end 542 and the connecting rod 55 when a fixed distance is maintained between the hinge axis between the corresponding other end of the rotating rod 57 and the connecting rod 55 and the sixth end 562 of the bucket connecting rod 56.

[0072] In other words, the connecting rod 55 can also reduce the extension distance of the fourth telescopic end 581.

[0073] A pruning machine cantilever according to a second aspect of the present invention includes: a connecting arm 6 and a shearing device as described in the first aspect, and a second hydraulic cylinder 7. The shearing device is rotatably disposed on the connecting arm 6; the second hydraulic cylinder 7 is disposed on the connecting arm 6, and the second telescopic end 71 of the second hydraulic cylinder 7 is connected to the shearing device to drive the shearing device to rotate relative to the connecting arm 6.

[0074] The pruning arm of the second aspect of the present invention includes the pruning device as described in the first aspect. The first shear 2 and the second shear 3 are driven close together by the drive mechanism 4 to prune branches, generating a large shearing force, thus enabling the pruning of relatively thick branches. During the pruning process, the workload of gardeners is low, and the pruning efficiency is high. Furthermore, the first shear 2 and the second shear 3 are adjusted by the rotation mechanism 5, facilitating gardeners to prune appropriate parts of the branches during the pruning process, thereby further improving pruning efficiency.

[0075] The second telescopic end 71 of the second hydraulic cylinder 7 extends and retracts to drive the shearing device to rotate around the hinge axis between the shearing device and the connecting arm 6, thereby adjusting the position of the first shear 2 and the second shear 3 to meet the shearing requirements and further improve the trimming efficiency.

[0076] Specifically, such as Figure 1 As shown, the second fixed end 72 of the second hydraulic cylinder 7 is fixed to the connecting arm 6.

[0077] The pruning arm of the second aspect embodiment of the present invention drives the first and second shears to approach each other to cut branches via a drive mechanism, generating a large shearing force, thus enabling the cutting of relatively thick branches. During the pruning process, the workload of gardeners is low, and the pruning efficiency is high. Furthermore, the first and second shears are adjusted via a rotary mechanism, allowing gardeners to cut appropriate parts of the branches during the pruning process, further improving pruning efficiency. The second telescopic end of the second hydraulic cylinder extends and retracts to drive the shearing device to rotate around the hinge axis between the shearing device and the connecting arm, thereby adjusting the positions of the first and second shears to meet the shearing requirements, further improving pruning efficiency.

[0078] A garden trimmer according to a third aspect of the present invention includes: a drive assembly 8, a trimmer body 9, and a trimmer cantilever and a third hydraulic cylinder 10 as described in the second aspect above. The trimmer body 9 is rotatably disposed on the drive assembly 8; the trimmer cantilever is rotatably disposed on the trimmer body 9; the third telescopic end 101 of the third hydraulic cylinder 10 is connected to the trimmer cantilever to drive the trimmer cantilever to rotate relative to the trimmer body 9.

[0079] The garden pruning machine of the third aspect of the present invention includes a pruning arm as described in the second aspect above. A drive mechanism 4 drives a first shear 2 and a second shear 3 to approach each other to prune branches, generating a large shearing force, thus enabling the pruning of relatively thick branches. During the pruning process, the workload of gardeners is low, and the pruning efficiency is high. Furthermore, the first shear 2 and the second shear 3 are adjusted by a rotation mechanism 5, facilitating gardeners to prune appropriate parts of the branches during the pruning process, thereby further improving pruning efficiency.

[0080] The second telescopic end 71 of the second hydraulic cylinder 7 extends and retracts to drive the shearing device to rotate around the hinge axis between the shearing device and the connecting arm 6, thereby adjusting the position of the first shear 2 and the second shear 3 to meet the shearing requirements and further improve the trimming efficiency.

[0081] The main body 9 of the pruning machine is rotatable relative to the drive assembly 8, so that the cutting device can rotate around the drive assembly 8, thereby further adjusting the position of the first shear 2 and the second shear 3 to meet the position requirements for cutting branches.

[0082] The third telescopic end 101 of the third hydraulic cylinder 10 performs telescopic movement to drive the pruning machine arm to lift or lower, further adjusting the position of the first shear 2 and the second shear 3 to meet the position requirements for cutting branches.

[0083] Specifically, such as Figure 1 As shown, the third telescopic end 101 is connected to the connecting arm 6 to drive the trimmer cantilever to lift or lower.

[0084] Furthermore, such as Figure 1 As shown, the third fixed end 102 of the third hydraulic cylinder 10 is fixed to the drive assembly 8.

[0085] Optionally, the second hydraulic cylinder 7, the third hydraulic cylinder 10, and the fourth hydraulic cylinder 58 are all oil cylinders.

[0086] The garden pruning machine of the third aspect of the present invention drives the first and second shears to approach each other to cut branches via a drive mechanism, generating a large shearing force, thereby enabling the cutting of relatively thick branches. During the pruning process, the workload of gardeners is low, and the pruning efficiency is high. Furthermore, the first and second shears are adjusted via a rotary mechanism, allowing gardeners to cut appropriate parts of the branches during the pruning process, further improving pruning efficiency. The second telescopic end of the second hydraulic cylinder extends and retracts to drive the shearing device to rotate around the hinge axis between the shearing device and the connecting arm, thereby adjusting the positions of the first and second shears to meet the pruning requirements, further improving pruning efficiency. The pruning machine body is rotatable relative to the drive assembly, allowing the shearing device to rotate around the drive assembly, further adjusting the positions of the first and second shears to meet the positional requirements for cutting branches. The third telescopic end of the third hydraulic cylinder extends and retracts to drive the pruning machine cantilever to raise or lower, further adjusting the positions of the first and second shears to meet the positional requirements for cutting branches.

[0087] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0088] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0089] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0090] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0091] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0092] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A shearing device, characterized by, The utility model relates to a shearing device, including: A fixed seat, the fixed seat includes a fixed cylinder; First scissors, the first scissors are arranged in the fixed seat, and the first scissors have a first blade; Second scissors, the second scissors are movably arranged in the fixed seat, and the second scissors have a second blade, when the second scissors are close to the first scissors, the second blade is close to the first blade to shear, when the second scissors are away from the first scissors, the second blade is away from the first blade; Driving mechanism, the driving mechanism is a first hydraulic cylinder, the second scissors are connected with the first telescopic end of the first hydraulic cylinder so as to drive the second scissors to be close to or away from the first scissors; Rotary mechanism, the rotary mechanism is connected with the fixed seat to drive the fixed seat to rotate; Guide rod, the fixed seat includes a sliding part, the sliding part is connected with the fixed cylinder, the sliding part is provided with a sliding groove, the two ends of the sliding groove in the length direction of the guide rod are communicated with the outside, the guide rod is movably arranged in the sliding groove, the first end of the guide rod is connected with the first telescopic end, the second end of the guide rod is connected with the second scissors, the first scissors are located between the first end and the second end in the length direction of the guide rod, the first scissors are arranged in the sliding part, the sliding groove is open at one end where the first scissors are located, the length direction of the guide rod is consistent with the length direction of the sliding groove, the first telescopic end carries out telescopic motion to drive the second scissors to be close to or away from the first scissors in the length direction of the guide rod, the outer peripheral wall of the fixed cylinder is provided with a retaining ring, one end of the sliding part close to the first telescopic end in the length direction of the guide rod is abutted with the retaining ring.

2. The shearing device of claim 1, wherein The fixed cylinder is provided with a fixed hole, and the first hydraulic cylinder is arranged in the fixed hole.

3. The shearing device of claim 1, wherein, Further including a positioning disc, the fixed seat is rotatably arranged in the positioning disc, the rotary mechanism includes a rotary motor, the rotary motor is connected with the positioning disc, the positioning disc is provided with a positioning hole, the output shaft of the rotary motor is arranged in the positioning hole, and the output shaft is connected with the fixed seat so as to drive the fixed seat to rotate around the rotation axis of the output shaft.

4. The shearing device of claim 3, wherein The rotary mechanism further includes a fixed disc, the rotary motor is connected with the fixed disc, the fixed disc is connected with the positioning disc, the shearing device further includes a fixed snap ring, the fixed snap ring includes a fixed part and a snap ring part, the fixed part is fixedly connected with the fixed seat, the snap ring part is rotatably arranged at the edge of the positioning disc, the positioning disc is located between the snap ring part and the fixed seat in the thickness direction of the positioning disc, the snap ring part and the fixed disc are located on the same side of the positioning disc, the snap ring part is provided with a snap ring hole, and the fixed disc is arranged in the snap ring hole.

5. The shearing device of claim 4, wherein, The fixing base comprises a connecting disc provided with a rotating groove connected with the output shaft, the connecting disc is provided with a plurality of first threaded holes in the circumferential direction of the output shaft, the fixing part is provided with a plurality of second threaded holes in the circumferential direction of the output shaft, the second threaded holes correspond to the first threaded holes one by one, and the first threaded holes and the second threaded holes are matched with each other through threaded members so as to fixedly connect the fixing part with the fixing base.

6. The shearing device of claim 3, wherein The slewing mechanism further comprises a connecting plate, a connecting rod, a bucket connecting rod and a fourth hydraulic cylinder, the third end of the connecting plate is connected with the positioning disc, the fourth end of the connecting plate is hinged with the connecting rod, the fifth end of the bucket connecting rod is hinged with the connecting plate, the fifth end of the bucket connecting rod is located between the third end and the fourth end to drive the connecting plate to rotate around the fourth end and the hinged axis of the connecting rod, and the fourth telescopic end of the fourth hydraulic cylinder is connected with the sixth end of the bucket connecting rod.

7. The shearing device of claim 6, wherein, The slewing mechanism further comprises a rotating rod, one end of the rotating rod is hinged with the sixth end of the bucket connecting rod, and the other end of the rotating rod is hinged with the connecting rod.

8. A pruner boom, characterized by, It comprises: a connecting arm; The shearing device according to any one of claims 1-7 is rotatably arranged on the connecting arm; a second hydraulic cylinder arranged on the connecting arm, and a second telescopic end of the second hydraulic cylinder is connected with the shearing device to drive the shearing device to rotate relative to the connecting arm.

9. A garden trimmer, characterized by It comprises: a driving assembly; a trimmer body rotatably arranged on the driving assembly; The trimmer boom according to claim 8 is rotatably arranged on the trimmer body; a third hydraulic cylinder, and a third telescopic end of the third hydraulic cylinder is connected with the trimmer boom to drive the trimmer boom to rotate relative to the trimmer body.

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