Adjustable garden engineering felling saw

Abstract

The application provides an adjustable garden engineering felling saw, which solves the problem of high operation difficulty of the felling saw, and comprises a holding part, a cutting part is installed at the front end of the holding part, a saw blade is fixed to the cutting part through a quick-release assembly, a positioning base is installed to the cutting part through a movable assembly, and a clamping assembly is installed to the positioning base. The application has the advantages of low operation difficulty and good cutting quality.

Description

Technical Field

[0001] This invention belongs to the field of garden tool technology, specifically relating to an adjustable garden engineering logging saw. Background Technology

[0002] A garden logging saw is a tool commonly used in gardening operations for cutting and felling trees. It is powered by a mixture of gasoline and engine oil or by electricity. Whether fuel-powered or electric, the basic working principle of a garden logging saw is that a power unit drives a saw chain to move in a high-speed circular motion around a guide plate. The sharp cutting edges of the saw chain continuously cut into the tree, gradually sawing it off through this continuous cutting action. In actual use, it requires a high level of operator skill, and precise cutting positioning demands a high level of expertise. Furthermore, existing chainsaws pose a significant safety hazard during cutting operations, and improper operation can easily lead to personal injury.

[0003] To address the shortcomings of existing technologies, people have conducted long-term explorations and proposed various solutions. For example, Chinese patent literature discloses a garden saw for garden maintenance [202110569934.7], which includes a saw blade and a fixing mechanism. The fixing mechanism includes fixing blocks. The saw blade is set on the upper end face of the fixing mechanism and is located between two fixing blocks. The cutting edge of the saw blade is on the same plane as the bottom of the fixing block. A handle is installed at the tail end of the saw blade. A through hole is opened in the middle of each of the two fixing blocks. A pull rod is installed inside each of the two through holes. A limit block is installed at the end of each pull rod away from the handle. A connecting plate is provided at the other end of each pull rod, and the two pull rods are symmetrically installed on the connecting plate. The connecting plate is located directly below the handle.

[0004] The above solution addresses the safety issues of chainsaws to some extent, but it still has many shortcomings, such as inconvenient cutting and positioning, and high skill requirements for operators. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a reasonably designed, easy-to-position adjustable garden logging saw for cutting operations.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an adjustable garden engineering logging saw, including a gripping part, a cutting part installed at the front end of the gripping part, a saw blade fixed to the cutting part by a quick-release component, a positioning base installed on the cutting part by a movable component, and an engagement component installed on the positioning base.

[0007] In the aforementioned adjustable garden logging saw, an unlocking component that is linked to a positioning base is provided between the gripping part and the cutting part, and the engaging component is located on the side of the positioning base away from the cutting part.

[0008] In the aforementioned adjustable garden logging saw, the unlocking component includes an unlocking button mounted on the grip, an elastic reset component installed between the unlocking button and the grip, the unlocking button being rotatably connected to a linkage crossbar via a linkage swing arm, the linkage crossbar extending axially along the cutting section and having balance swing arms rotatably mounted at both ends between the linkage crossbar and the cutting section, the linkage crossbar having positioning teeth arranged axially opposite to the positioning base, the positioning base having positioning grooves for the positioning teeth to be inserted, and the two sides of the positioning base being slidably connected to the cutting section.

[0009] In the aforementioned adjustable garden logging saw, the interlocking assembly includes interlocking plates mounted on positioning bases. The positioning bases and interlocking plates are arranged in pairs. Nested telescopic cylinders connect the positioning bases, and return springs are installed inside the telescopic cylinders. Guide openings are provided between the ends of the interlocking plates.

[0010] In the aforementioned adjustable garden logging saw, the bite plate has bite teeth on one side opposite to the bite plate, the positioning base has a built-in gear ratchet, the bite plate is slidably connected to the positioning base and has a bite rack that meshes with the gear ratchet, an elastic reset component is installed between the bite plate and the positioning base, and the pawl inside the gear ratchet is movably connected to an unlocking protrusion that extends into the positioning groove.

[0011] In the aforementioned adjustable garden logging saw, the movable components include movable grooves on both sides of the cutting section, the positioning base has a movable strip that is slidably connected to the movable grooves, and the cutting section has an indicator scale opposite to the positioning base.

[0012] In the aforementioned adjustable garden logging saw, the quick-release assembly includes a mounting plate movably installed inside the cutting section. The mounting plate has a mounting groove for inserting the saw blade. Several fixing bolts are threaded onto the mounting plate, passing through mounting holes at the ends of the saw blade. The fixing bolts are connected to a rotating handle.

[0013] In the aforementioned adjustable garden logging saw, a cutting motor is installed inside the grip section. The cutting motor is connected to a drive cylinder via a speed-changing gear set. The drive cylinder has a drive groove offset from its central axis on its side. A drive ring is rotatably installed in the drive groove. The drive ring has symmetrically arranged drive seats. One drive seat is rotatably connected to the end of the mounting plate via a drive swing arm, and the other drive seat is rotatably connected to the other end of the mounting plate via a synchronous connecting rod and another drive swing arm.

[0014] In the aforementioned adjustable garden logging saw, the grip has a built-in main control module and a detachable power module connected to the main control module. The grip is equipped with a switch button and a gear adjustment button connected to the main control module, and the main control module is connected to the cutting motor.

[0015] In the aforementioned adjustable garden logging saw, the outer side of the grip is covered with an anti-slip layer, and anti-slip stripes are distributed on the anti-slip layer. A protective coating is provided on the cutting part.

[0016] Compared with existing technologies, the advantages of this invention are as follows: the positioning base, together with the interlocking component, limits the logging saw and relatively fixes the cutting position, thereby reducing the difficulty of operation during cutting; the saw blade uses an electric drive to perform reciprocating motion cutting, which improves cutting efficiency while reducing labor costs, and can be switched between manual and automatic modes as needed; the saw blade can be flexibly disassembled and replaced, which facilitates daily maintenance and adapts to different working environments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0019] Figure 3 This is a partial cross-sectional view of the present invention;

[0020] Figure 4 This is another partial cross-sectional view of the present invention;

[0021] Figure 5 This is a partially enlarged schematic diagram of the present invention;

[0022] In the diagram, the components are: grip 1, main control module 11, power module 12, switch button 13, gear adjustment button 14, anti-slip layer 15, anti-slip stripes 16, protective coating 17, cutting part 2, quick-release assembly 3, mounting plate 31, mounting groove 32, fixing bolt 33, mounting hole 34, rotating handle 35, saw blade 4, movable assembly 5, movable groove 51, movable strip 52, indicator scale 53, positioning base 6, biting assembly 7, biting plate 71, telescopic cylinder 72, guide port 73, biting teeth 74, gear ratchet 75, biting rack 76, unlocking protrusion 77, unlocking assembly 8, unlocking button 81, linkage swing arm 82, linkage crossbar 83, balance swing arm 84, positioning teeth 85, positioning groove 86, cutting motor 9, speed change gear set 91, drive cylinder 92, drive groove 93, drive ring 94, drive seat 95, drive swing arm 96, and synchronous connecting rod 97. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] like Figure 1-5As shown, an adjustable garden logging saw includes a grip section 1 for the operator to hold, with a cutting section 2 mounted at the front end of the grip section 1. The grip section 1 and the cutting section 2 typically employ a modular structure for easy maintenance and adjustment. The cutting section 2 is secured to a saw blade 4 via a quick-release assembly 3. Unlike existing chainsaw structures, using a saw blade 4 effectively reduces operating costs and facilitates routine maintenance and adjustment. The cutting section 2 is mounted to a positioning base 6 via a movable assembly 5. An engaging assembly 7 is mounted on the positioning base 6. The positioning base 6, equipped with the engaging assembly 7, achieves relative positioning between the cutting section 2 and the tree to be cut. This ensures a fixed cutting direction during the reciprocating cutting motion of the saw blade 4, improving cutting quality while reducing operational difficulty.

[0025] Specifically, to enable flexible adjustment of the cutting position, an unlocking component 8, which is linked to the positioning base 6, is provided between the gripping part 1 and the cutting part 2. An engaging component 7 is located on the side of the positioning base 6 away from the cutting part 2. The unlocking component 8 unlocks the positioning base 6 and the cutting part 2, thereby adjusting their relative positions.

[0026] In detail, the unlocking component 8 is unlocked manually, including an unlocking button 81 mounted on the grip 1. A resilient reset element is installed between the unlocking button 81 and the grip 1. The unlocking button 81 is rotatably connected to a linkage crossbar 83 via a linkage arm 82. The linkage crossbar 83 extends axially along the cutting section 2, and balance arms 84 are rotatably mounted at both ends between the crossbar 83 and the cutting section 2. Positioning teeth 85 are arranged axially along the linkage crossbar 83, opposite to the positioning base 6. The positioning base 6 has positioning grooves 86 for the positioning teeth 85 to insert into. The two sides of the positioning base 6 are slidably connected to the cutting section 2. When the unlocking button 81 is pressed, the linkage crossbar 83 rises, separating the positioning teeth 85 from the positioning grooves 86. At this time, the positioning base 6 can slide axially along the cutting section 2 until it reaches the cutting area.

[0027] Furthermore, the interlocking assembly 7 clamps and fixes the tree branches, specifically including interlocking plates 71 installed on the positioning base 6. The positioning base 6 and the interlocking plates 71 are arranged in pairs, and nested telescopic cylinders 72 are connected between the positioning bases 6. A return spring is installed inside the telescopic cylinders 72, and guide openings 73 are opened between the ends of the interlocking plates 71. Under the action of the return spring, the interlocking plates 71 clamp the branches, and the saw blade 4 reciprocates between the interlocking plates 71 to cut.

[0028] Furthermore, to maintain the clamping force during saw blade cutting, the bite plate 71 has bite teeth 74 on the opposite side. The positioning base 6 has a built-in gear ratchet 75. The bite plate 71 is slidably connected to the positioning base 6 and has a bite rack 76 that meshes with the gear ratchet 75. An elastic reset element is installed between the bite plate 71 and the positioning base 6. An unlocking protrusion 77 is movably connected to the pawl inside the gear ratchet 75, extending into the positioning groove 86. The bite teeth 74 are engaged and fixed with the tree branches. As cutting progresses, the cutting position of the saw blade 4 deepens. The engagement of the gear ratchet 75 and the bite rack 76 ensures unidirectional movement of the bite plate 71 relative to the positioning base 6, thus preventing accidental disengagement of the saw blade 4 and resulting cutting deviation. This bite structure ensures that the saw blade 4 applies sufficient pressure to the tree, guaranteeing stable cutting movement.

[0029] In addition, the movable component 5 ensures that the position of the positioning base 6 can be flexibly adjusted, including movable grooves 51 provided on both sides of the cutting part 2, the positioning base 6 having movable strips 52 that are slidably connected to the movable grooves 51, and the cutting part 2 having an indicator scale 53 opposite to the positioning base 6. The indicator scale 53 mainly assists the positioning base 6 in positioning the cutting part.

[0030] Meanwhile, existing band saws typically use threaded fasteners for fixing, which makes disassembly and assembly cumbersome. In this embodiment, the quick-release assembly 3 includes a mounting plate 31 movably installed within the cutting section 2. The mounting plate 31 has a mounting groove 32 for inserting the saw blade 4. This mounting plate 31 provides support for the saw blade 4, preventing deformation during operation. Several fixing bolts 33 are threaded onto the mounting plate 31. The fixing bolts 33 pass through mounting holes 34 at the ends of the saw blade 4, and each fixing bolt 33 is connected to a rotating handle 35. Manually turning the rotating handle 35 disengages the fixing bolts 33 from the mounting holes 34, allowing for the replacement of the saw blade 4.

[0031] As can be seen, to improve cutting efficiency, a cutting motor 9 is installed inside the gripping part 1. The cutting motor 9 is connected to a drive cylinder 92 via a transmission gear set 91. The drive cylinder 92 has a drive groove 93 offset from its central axis on its side. The cutting motor 9 drives the drive cylinder 92 to rotate circumferentially. A drive ring 94 is rotatably installed in the drive groove 93. The drive ring 94 has symmetrically arranged drive seats 95. One drive seat 95 is rotatably connected to the end of the mounting plate 31 via a drive swing arm 96, and the other drive seat 95 is rotatably connected to the other end of the mounting plate 31 via a synchronous connecting rod 97 and another drive swing arm 96. When the drive cylinder 92 rotates, the drive ring 94 also periodically swings. The drive seats 95 on both sides drive the drive swing arms 96 to push and pull, thereby driving the mounting plate 31 and the saw blade 4 to move. The two drive seats 95 and the drive swing arms 96 provide sufficient traction force for the reciprocating motion of the saw blade 4. Under the limiting action of the positioning base 6 and the biting assembly 7, the saw blade 4 performs high-frequency cutting on the tree branches.

[0032] Clearly, the gripping part 1 has a built-in main control module 11, and a detachable power module 12 is installed on it. The power module 12 is connected to the main control module 11. The gripping part 1 is equipped with a switch button 13 and a gear adjustment button 14 connected to the main control module 11. The main control module 11 is connected to the cutting motor 9. The main control module 11 typically uses a DRV8870 driver chip to ensure precise control of the cutting motor 9.

[0033] Preferably, the outer side of the grip part 1 is covered with an anti-slip layer 15, and the anti-slip layer 15 is distributed with anti-slip stripes 16 to facilitate the operator's grip. The cutting part 2 is provided with a protective coating 17 to improve its waterproof effect and extend the overall service life of the logging saw.

[0034] In summary, the principle of this embodiment is as follows: the saw blade 4 inside the cutting part 2 is electrically driven to reciprocate for cutting, and the positioning base 6 on the cutting part 2 is fixed relative to the cutting part under the action of the biting component 7, so that the saw blade 4 moves smoothly relative to the cutting part, reducing the difficulty of the cutting operation.

[0035] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0036] Although this article extensively uses the following components: grip 1, main control module 11, power module 12, switch button 13, gear adjustment button 14, anti-slip layer 15, anti-slip stripes 16, protective coating 17, cutting part 2, quick-release assembly 3, mounting plate 31, mounting groove 32, fixing bolt 33, mounting hole 34, rotating handle 35, saw blade 4, movable assembly 5, movable groove 51, movable strip 52, indicator scale 53, positioning base 6, engagement assembly 7, engagement plate 71, extension The terms used include 72 (retractable cylinder), 73 (guide port), 74 (engaging teeth), 75 (gear ratchet), 76 (engaging rack), 77 (unlocking protrusion), 8 (unlocking component), 81 (unlocking button), 82 (linkage swing arm), 83 (linkage crossbar), 84 (balance swing arm), 85 (positioning teeth), 86 (positioning groove), 91 (cutting motor), 92 (speed transmission gear set), 93 (drive cylinder), 94 (drive groove), 95 (drive ring), 96 (drive seat), 97 (drive swing arm), and 98 (synchronous linkage), but the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. An adjustable garden logging saw, comprising a grip (1), wherein a cutting part (2) is mounted on the front end of the grip (1), and a saw blade (4) is fixed to the cutting part (2) by a quick-release assembly (3), characterized in that, The cutting part (2) is equipped with a positioning base (6) via a movable component (5), and an engagement component (7) is installed on the positioning base (6); the quick-release component (3) includes a mounting plate (31) movably installed inside the cutting part (2), the mounting plate (31) having a mounting groove (32) for inserting the saw blade (4), and a plurality of fixing bolts (33) threaded onto the mounting plate (31), the fixing bolts (33) passing through mounting holes (34) at the end of the saw blade (4), and the fixing bolts (33) being connected to a rotating handle (35); the gripping part (1) is equipped with a cutting part. The cutting motor (9) is connected to the drive cylinder (92) via a gear set (91). The drive cylinder (92) has a drive groove (93) offset from its central axis on its side. A drive ring (94) is rotatably installed in the drive groove (93). The drive ring (94) has symmetrically arranged drive seats (95). One of the drive seats (95) is rotatably connected to the end of the mounting plate (31) via a drive swing arm (96). The other drive seat (95) is rotatably connected to the other end of the mounting plate (31) via a synchronous connecting rod (97) and another drive swing arm (96).

2. The adjustable garden logging saw according to claim 1, characterized in that, An unlocking component (8) that is linked to the positioning base (6) is provided between the gripping part (1) and the cutting part (2), and the biting component (7) is provided on the side of the positioning base (6) away from the cutting part (2).

3. An adjustable garden logging saw according to claim 2, characterized in that, The unlocking component (8) includes an unlocking button (81) installed on the grip (1). An elastic reset member is installed between the unlocking button (81) and the grip (1). The unlocking button (81) is rotatably connected to a linkage crossbar (83) via a linkage swing arm (82). The linkage crossbar (83) extends axially along the cutting part (2) and has a balance swing arm (84) rotatably installed between its two ends and the cutting part (2). The linkage crossbar (83) has positioning teeth (85) arranged axially opposite to the positioning base (6). The positioning base (6) has a positioning groove (86) for the positioning teeth (85) to be inserted. The two sides of the positioning base (6) are slidably connected to the cutting part (2).

4. An adjustable garden logging saw according to claim 3, characterized in that, The occlusal assembly (7) includes an occlusal plate (71) mounted on a positioning base (6). The positioning base (6) and the occlusal plate (71) are arranged in pairs. The positioning bases (6) are connected to each other by nested telescopic cylinders (72). A return spring is installed inside the telescopic cylinders (72). A guide port (73) is opened between the ends of the occlusal plates (71).

5. An adjustable garden logging saw according to claim 4, characterized in that, The biting plate (71) has a biting tooth (74) on one side opposite to the positioning base (6). The positioning base (6) has a built-in gear ratchet (75). The biting plate (71) is slidably connected to the positioning base (6) and has a biting rack (76) that meshes with the gear ratchet (75). An elastic reset member is installed between the biting plate (71) and the positioning base (6). The pawl inside the gear ratchet (75) is movably connected to an unlocking protrusion (77). The unlocking protrusion (77) extends into the positioning groove (86).

6. An adjustable garden logging saw according to claim 3, characterized in that, The active component (5) includes active grooves (51) provided on both sides of the cutting part (2), the positioning base (6) has an active strip (52) that is slidably connected to the active grooves (51), and the cutting part (2) has an indicator scale (53) opposite to the positioning base (6).

7. An adjustable garden logging saw according to claim 1, characterized in that, The grip (1) has a built-in main control module (11), and the grip (1) is equipped with a detachable power module (12). The power module (12) is connected to the main control module (11). The grip (1) is provided with a switch button (13) connected to the main control module (11) and a gear adjustment button (14). The main control module (11) is connected to the cutting motor (9).

8. An adjustable garden logging saw according to claim 1, characterized in that, The grip (1) is covered with an anti-slip layer (15) on the outside, and anti-slip stripes (16) are distributed on the anti-slip layer (15). The cutting part (2) is provided with a protective coating (17).

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