Improved branch sawing mechanism

Abstract

An improved branch sawing mechanism comprises a clamping shell provided with a groove on one side, and a saw wheel is arranged in the clamping shell and partially exposed from the groove to cut the bamboo branch. A protective shell is coaxially and resettable rotatably arranged in the clamping shell. When sawing the branch, the protective shell cooperates with the groove to clamp the bamboo branch. One side of the groove is provided with a first clamping part, and the protective shell is provided with a second clamping part. The first clamping part is provided with a first stop block on the side opposite to the second clamping part, and the second clamping part is provided with a second stop block on the side opposite to the first clamping part. The saw wheel is connected and driven by a gear meshing transmission structure and a driving motor, and the rotation direction of the saw wheel is from the second clamping part to the first clamping part. Compared with the prior art, the present application can quickly and cleanly cut off bamboo branches of different lengths and thicknesses, whether fresh or dry, and can be easily handled.

Description

Technical Field

[0001] This invention belongs to the field of sawing machine technology, and specifically relates to an improved sawing mechanism. Background Technology

[0002] A tree saw is a mechanical device used for pruning tree branches, typically consisting of a power source, transmission mechanism, blades, and operating handle. Tree saws can be categorized based on the type of blade, such as chainsaws, reciprocating saws, and circular saws, each with its own advantages and disadvantages. Existing tree saws are highly efficient at cutting general tree branches, but they present significant problems when cutting bamboo. Bamboo branches have high elasticity and toughness, easily bouncing during the cutting process, causing the blades to fail to penetrate the bamboo properly, or resulting in broken bamboo that scatters and injures people. These problems not only affect the effectiveness of the tree saw but also increase the safety risks for the user. Therefore, there is still considerable room for improvement in existing tree saws for cutting bamboo.

[0003] Therefore, based on some of the situations in the prior art described above, this application has made further designs and improvements. Summary of the Invention

[0004] To address the shortcomings of the existing technology, this invention provides a highly efficient, safe, and convenient bamboo sawing mechanism that can cut bamboo branches, which can greatly assist in bamboo forest management and bamboo product processing.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution.

[0006] An improved bamboo sawing mechanism includes a clamping housing with a groove on one side, and a saw wheel partially protruding from the groove for cutting bamboo branches is installed inside the clamping housing. A protective shell is coaxially and rotatably mounted within the clamping housing, repositioned to a fixed position. During sawing, the protective shell engages with the groove to clamp the bamboo branch.

[0007] A first clamping part is provided on one side of the groove, and a second clamping part is provided on the protective shell. The first clamping part has a first stop on its side opposite to the second clamping part, and the second clamping part has a second stop on its side opposite to the first clamping part. When the protective shell is opened, a limiting clamping area is formed between the saw wheel, the first stop, and the second stop.

[0008] The saw wheel is connected to the drive motor through a gear meshing transmission structure, and the saw wheel rotates from the second clamping part to the first clamping part.

[0009] In a preferred embodiment, the first stop is connected to a first limiting block, and the first clamping portion has a first sliding groove for the first limiting block to slide in. A first adjusting screw extending into the first sliding groove is provided on the first clamping portion, passing through the first limiting block and threadedly fitted to it. The second stop is connected to a second limiting block, and the second clamping portion has a second sliding groove for the second limiting block to slide in. A second adjusting screw extending into the second sliding groove is provided on the second clamping portion, passing through the second limiting block and threadedly fitted to it. This allows the first and second stops to be adjusted according to the diameter of the bamboo branch, ensuring that the bamboo branch remains within the limiting clamping area.

[0010] In a preferred embodiment, the clamping housing has a cavity for accommodating the saw wheel, and the cavity communicates with the first sliding groove. The cavity has a discharge hole for ejecting sawdust. When sawing branches, sawdust entering the cavity or the first sliding groove can be ejected through the discharge hole.

[0011] In a preferred embodiment, the bottom of the second slide groove is provided with a trough that communicates with the lower surface of the second clamping part, so that the sawdust entering the second slide groove during sawing can be discharged from the trough, thus preventing the sawdust from accumulating in the second slide groove.

[0012] In a preferred embodiment, both the exposed ends of the first and second adjusting screws are provided with cylindrical adjusting knobs, and the adjusting knobs are provided with anti-slip textures. This allows the first or second stop to be conveniently and accurately adjusted and positioned.

[0013] In a preferred embodiment, the maximum diameter of the bamboo branch being cut is 6cm, and the maximum sliding stroke of the first and second slides is 3cm, so that the sawing mechanism can cut bamboo branches with a diameter of less than 6cm.

[0014] In a preferred embodiment, the first stop has a first surface facing the limiting clamping area, and the first surface is recessed inward. When sawing, the bamboo branch, driven by the saw wheel, can move towards the second stop under the limiting action of the first surface.

[0015] In a preferred embodiment, the extension line of the concave arc of the first surface is perpendicular to the opposite surface of the first clamping part, and the diameter of the arc is 3cm, so as to ensure that the bouncing bamboo stick bounces towards the second stop and prevents the bamboo stick from popping out of the limiting clamping area.

[0016] In a preferred embodiment, the second stop has a second surface facing the limiting clamping area. The second surface protrudes outward, causing the bamboo branch that bounces to the second surface to bounce toward the saw wheel, preventing the bamboo branch from jumping out of the limiting clamping area.

[0017] In a preferred embodiment, the first or second block is provided with a guide surface for guiding the bamboo branch into the limiting clamping area.

[0018] Compared with the prior art, this application has the following beneficial effects:

[0019] 1. Capable of cutting bamboo branches. The bamboo saw can quickly and cleanly cut bamboo branches of different lengths and thicknesses, whether fresh or dried, and can be easily processed.

[0020] 2. The clamping range can be adjusted according to the diameter of the bamboo branch. The bamboo saw has an adjustable clamping device that can automatically adjust the clamping force and range according to the diameter of the bamboo branch, ensuring that the bamboo branch will not slip or be damaged.

[0021] 3. The saw wheel will not jam when sawing branches. The branch saw uses a high-speed rotating saw wheel, which can effectively cut the fibers of bamboo branches and will not jam or break as easily as ordinary saw blades. Attached Figure Description

[0022] Figure 1 A three-dimensional schematic diagram of the sawing mechanism and mounting base after assembly.

[0023] Figure 2 A schematic diagram of the internal structure of the sawing mechanism and mounting base after assembly.

[0024] Figure 3 A cross-sectional view of the internal structure after the sawing mechanism and mounting base are assembled.

[0025] Figure 4 This is an explosion diagram of a sawing mechanism.

[0026] Figure 5 This is a schematic diagram of the bottom structure of the mounting base.

[0027] Figure 6 This is a schematic diagram of the structure of the first clamping part.

[0028] Figure 7 This is a schematic diagram of the second clamping part.

[0029] Figure 8 This is a schematic diagram of the structure in the limiting clamping area.

[0030] Figure 9 This is a schematic diagram showing the cooperation between the first clamping part and the second clamping part.

[0031] The following is an explanation of the markings in the accompanying drawings:

[0032] 1. Clamping housing; 11. Bottom housing; 12. Cover housing; 13. Saw wheel; 14. Protective housing; 15. Assembly plate; 151. Buckle hole; 16. Pressing block; 17. U-shaped elastic strip; 18. Fixing protrusion; 19. Throwout hole;

[0033] 20. First clamping part; 21. First stop block; 211. First surface; 22. First limiting block; 23. First slide groove; 24. First adjusting screw;

[0034] 30. Second clamping part; 31. Second stop block; 311. Second surface; 32. Second limiting block; 33. Second slide groove; 34. Second adjusting screw; 35. Leakage groove;

[0035] 40. First drive shaft; 41. Torque reset component; 42. First gear; 43. Second drive shaft; 44. Second gear; 45. Third drive shaft; 46. Third meshing component; 47. Fourth drive shaft; 471. Eccentric connecting groove; 48. Fourth gear;

[0036] 50. Drive motor; 51. Output gear; 52. Sixth meshing component; 53. Fifth gear; 531. Eccentric protrusion; 54. Fifth transmission shaft; 55. Telescopic reset component;

[0037] 60. Adjustment knob; 61. Guide surface;

[0038] 7. Mounting base; 71. Clip; 72. Fixing groove. Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0040] In the following embodiments, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0041] In the description of this invention, it should be understood that terms such as center, longitudinal, transverse, length, width, thickness, upper, lower, front, rear, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, counterclockwise, etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing and simplifying the description of this invention; therefore, they should not be construed as limiting this invention. Furthermore, terms such as first, second, etc., 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 shown. In the description of this invention, unless otherwise expressly specified and limited, terms such as installation, connection, linking, etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] refer to Figures 1 to 9 An improved bamboo sawing mechanism includes a clamping housing 1 with a groove on one side, and a saw wheel 13 partially protruding from the groove for cutting bamboo branches is installed inside the clamping housing 1. A protective shell 14 is coaxially mounted with the saw wheel 13 and rotatably reset within the clamping housing 1. During sawing, the protective shell 14 engages with the groove to clamp the bamboo branch.

[0043] A first clamping part 20 is provided on one side of the groove, and a second clamping part 30 is provided on the protective shell 14. The first clamping part 20 has a first stop 21 on its side opposite to the second clamping part 30, and the second clamping part 30 has a second stop 31 on its side opposite to the first clamping part 20. When the protective shell 14 is opened, a limiting clamping area is formed between the saw wheel 13, the first stop 21, and the second stop 31. The saw wheel 13 is connected to the drive motor 50 via a gear meshing transmission structure. The saw wheel 13 rotates from the second clamping part 30 towards the first clamping part 20.

[0044] refer to Figure 9 The direction of rotation of the saw wheel 13 is shown as marked a. After entering the limiting clamping area, the bamboo branch moves towards the first clamping part 20 under the drive of the saw wheel 13. Then, blocked by the first stop 21, it bounces towards the second clamping part 30 along path b. Then, blocked by the second stop 31, it bounces back to the saw wheel 13 along path c. In the above process, the surface fibers of the bamboo branch are gradually cut by the saw wheel 13 until the bamboo branch is successfully sawn off.

[0045] The clamping housing 1 includes a bottom shell 11 and a cover shell 12, which are fixed together by threaded assembly. The gear meshing transmission structure is as follows: it includes a first drive shaft 40, on which the saw wheel 13 and the protective shell 14 are mounted. The first drive shaft 40 is connected to the bottom shell 11 and the cover shell 12 by bearing connection. A torque reset member 41 is installed between the protective shell 14 and the first drive shaft 40. Preferably, the torque reset member 41 is a torsion spring, with one end inserted into the first drive shaft 40 and the other end inserted into the protective shell 14. The protective shell 14 can protect the saw wheel 13 and allows the limiting clamping area to adaptively adjust according to the diameter of the stuck branch. When the branch is sawn, the protective shell 14 is reset with the help of the torque reset member 41.

[0046] An assembly plate 15 is also installed inside the clamping housing 1. The assembly plate 15 is equipped with a second drive shaft 43 fixed with a second gear 44, a third drive shaft 45 fixed with a third meshing member 46, and a fourth drive shaft 47 fixed with a fourth gear 48. A first drive shaft 40 is mounted on the assembly plate 15, and a first gear 42 is mounted on the first drive shaft 40. The first gear 42, second gear 44, third meshing member 46, and fourth gear 48 are sequentially meshed and connected for transmission. The sawing mechanism is driven by power from the fourth gear 48. The third meshing member 46 includes a third large tooth and a third small tooth coaxially arranged. The third large tooth meshes with the fourth gear 48, and the third small tooth meshes with the second gear 44.

[0047] The sawing mechanism described in this application is mounted on a mounting base 7. The mounting base 7 houses a drive motor 50 for driving the sawing mechanism. The drive motor 50 is powered by an external power supply or a battery pack. The drive motor 50 is connected to an output gear 51, which meshes with a sixth meshing member 52. The sixth meshing member 52 meshes with a fifth gear 53. The drive motor 50 transmits power to the fifth gear 53. The sixth meshing member 52 includes a sixth large tooth and a sixth small tooth arranged coaxially. The sixth large tooth meshes with the output gear 51, and the sixth small tooth meshes with the fifth gear 53. An eccentric protrusion 531 is provided on one end face of the fifth gear 53. The fourth transmission shaft 47 has a connecting portion for mounting with the mounting plate 15, and the connecting portion has an eccentric connecting groove 471 adapted to fit the eccentric protrusion 531. When the sawing mechanism and the mounting base 7 are assembled, the fifth gear 53 transmits power to the fourth transmission shaft 47 to drive the sawing mechanism to rotate. The fifth gear 53 is provided with a fifth transmission shaft 54, and the fifth transmission shaft 54 ​​is provided with a telescopic reset member 55 that abuts between the fifth gear 53 and the clamping housing 1, so that the sawing mechanism and the mounting base 7 do not need to be aligned when assembled, and the sawing mechanism can be conveniently and quickly assembled on the mounting base 7.

[0048] Specifically, this application also includes a quick-release structure: pressing blocks 16 are mounted on both sides of the clamping housing 1, the pressing blocks 16 extend into the clamping housing 1 and have slots in the extended portion, and a U-shaped elastic strip 17 is installed between the slots of the two pressing blocks 16. A buckle 71 is provided at the bottom of the mounting base 7, and a buckle hole 151 is provided on the mounting plate 15 for the buckle 71 to extend into. When the sawing mechanism is assembled and fixed with the mounting base 7, the buckle 71 extends into the buckle hole 151 and abuts against the U-shaped elastic strip 17 for fixation. The user can easily and quickly detach the sawing mechanism from the mounting base 7 by pressing the pressing blocks 16. A fixing groove 72 is provided at the bottom of the mounting base 7, and a fixing protrusion 18 that mates with the slot is provided on one side of the clamping housing 1, ensuring a firm and stable assembly between the sawing mechanism and the mounting base 7.

[0049] Preferably, the U-shaped elastic strip 17 is a metal strip with excellent resilience and high hardness, so as to simultaneously meet the requirements of low manual pressing force and no deformation of the buckle 71 during assembly. The telescopic reset component 55 is a metal spring.

[0050] As a specific embodiment, based on the above embodiment, the first stop 21 and the second stop 31 are configured to be adjustable according to the diameter of the bamboo branch. The specific structure is as follows: The first stop 21 is connected to a first limiting block 22, and the first clamping part 20 has a first sliding groove 23 for the first limiting block 22 to slide. The first clamping part 20 is provided with a first adjusting screw 24 extending into the first sliding groove 23, which passes through the first limiting block 22 and is threadedly fitted to it. The second stop 31 is connected to a second limiting block 32, and the second clamping part 30 has a second sliding groove 33 for the second limiting block 32 to slide. The second clamping part 30 is provided with a second adjusting screw 34 extending into the second sliding groove 33, which passes through the second limiting block 32 and is threadedly fitted to it. This allows the first stop 21 and the second stop 31 to be adjusted according to the diameter of the bamboo branch, ensuring that the bamboo branch remains within the limiting clamping area.

[0051] To prevent sawdust generated during sawing from accumulating inside the clamping housing 1 and hindering the operation of other structures, the clamping housing 1 is provided with a cavity to accommodate the saw wheel 13, which communicates with the first sliding groove 23. The cavity is provided with a discharge hole 19 for ejecting sawdust. During sawing, sawdust entering the cavity or the first sliding groove 23 can be ejected through the discharge hole 19. The bottom of the second sliding groove 33 is provided with a drainage groove 35 communicating with the lower surface of the second clamping part 30, allowing sawdust entering the second sliding groove 33 during sawing to leak out through the drainage groove 35, preventing sawdust from accumulating inside the second sliding groove 33.

[0052] Furthermore, both the exposed ends of the first adjusting screw 24 and the second adjusting screw 34 are equipped with cylindrical adjusting knobs 60, and the adjusting knobs 60 are rimmed with anti-slip textures. This allows the first stop block 21 or the second stop block 31 to be conveniently and accurately adjusted and positioned. The maximum diameter of the bamboo branch to be cut is 6cm, and the maximum sliding stroke of the first slide groove 23 and the second slide groove 33 is 3cm, enabling the sawing mechanism to cut bamboo branches with a diameter of less than 6cm.

[0053] As a specific embodiment, based on the above embodiment, the first stop 21 is provided with a first surface 211 facing the limiting clamping area, and the first surface 211 is concave inward. When sawing, the bamboo branch that bounces after being driven by the saw wheel 13 can move towards the second stop 31 under the limiting action of the first surface 211. The extension line of the concave arc of the first surface 211 is perpendicular to the opposite surface of the first clamping part 20, and the diameter of the arc is 3cm, so as to ensure that the bouncing bamboo branch bounces towards the second stop 31 and prevents the bamboo branch from jumping out of the limiting clamping area. The second stop 31 is provided with a second surface 311 facing the limiting clamping area, and the second surface 311 is convex outward, so that the bamboo branch that bounces to the second surface 311 bounces towards the saw wheel 13 and prevents the bamboo branch from jumping out of the limiting clamping area.

[0054] In order to enable the bamboo branch to enter the limiting clamping area smoothly, the first block 21 or the second block 31 is provided with a guide surface 61 for guiding the bamboo branch into the limiting clamping area. The guide surface 61 is used to guide the bamboo branch into the limiting clamping area.

[0055] The scope of protection of this invention includes, but is not limited to, the above embodiments. The scope of protection of this invention is defined by the claims. Any substitutions, modifications, or improvements to this technology that are easily conceived by those skilled in the art fall within the scope of protection of this invention.

Claims

1. An improved sawing mechanism, characterized in that, The device includes a clamping housing (1) with a groove on one side, and a saw wheel (13) that is partially exposed from the groove for cutting bamboo branches is installed inside the clamping housing (1); a protective shell (14) is installed inside the clamping housing (1) in a coaxial and rotatable manner with respect to the saw wheel (13). A first clamping part (20) is provided on one side of the groove, and a second clamping part (30) is provided on the protective shell (14). The first clamping part (20) has a first stop (21) on the side opposite to the second clamping part (30), and the second clamping part (30) has a second stop (31) on the side opposite to the first clamping part (20). When the protective shell (14) is opened, a limiting clamping area is formed between the saw wheel (13), the first stop (21), and the second stop (31). The saw wheel (13) is connected to the drive motor (50) through a gear meshing transmission structure. The saw wheel (13) rotates from the second clamping part (30) to the first clamping part (20). The first stop (21) is provided with a first surface (211) facing the limiting clamping area. The first surface (211) is recessed inward. The second stop (31) is provided with a second surface (311) facing the limiting clamping area. The second surface (311) is protruding outward.

2. The improved sawing mechanism according to claim 1, characterized in that, The first stop (21) is connected to the first limiting block (22), and the first clamping part (20) is provided with a first sliding groove (23) for the first limiting block (22) to slide; the first clamping part (20) is provided with a first adjusting screw (24) extending into the first sliding groove (23), and the first adjusting screw (24) passes through the first limiting block (22) and is threadedly assembled with the first limiting block (22); The second stop (31) is connected to the second limiting block (32), and the second clamping part (30) is provided with a second sliding groove (33) for the second limiting block (32) to slide; the second clamping part (30) is provided with a second adjusting screw (34) extending into the second sliding groove (33), and the second adjusting screw (34) passes through the second limiting block (32) and is threadedly assembled with the second limiting block (32).

3. The improved sawing mechanism according to claim 2, characterized in that, The clamping housing (1) has a cavity for accommodating the saw wheel (13), and the cavity is connected to the first sliding groove (23); the cavity is provided with a discharge hole (19) for discharging sawdust.

4. An improved sawing mechanism according to claim 2, characterized in that, The bottom of the second slide (33) is provided with a trough (35) that communicates with the lower surface of the second clamping part (30).

5. An improved sawing mechanism according to claim 2, characterized in that, Both the first adjusting screw (24) and the second adjusting screw (34) have cylindrical adjusting knobs (60) at their exposed ends, and the adjusting knobs (60) are provided with anti-slip textures.

6. An improved sawing mechanism according to claim 2, characterized in that, The maximum diameter of the bamboo branch being cut is 6cm, and the maximum sliding stroke of the first groove (23) and the second groove (33) is 3cm.

7. An improved sawing mechanism according to claim 1, characterized in that, The extension line of the concave arc of the first surface (211) is perpendicular to the opposite surface of the first clamping part (20), and the diameter of the arc is 3cm.

8. An improved sawing mechanism according to claim 1, characterized in that, The first stop (21) or the second stop (31) is provided with a guide surface (61) for guiding the bamboo branch into the limiting clamping area.

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