Angle-adjustable lopper saw

Abstract

The utility model discloses an angle-adjustable lopper saw which comprises an operating rod, an electric chain saw arranged at the upper end of the operating rod and an operating handle arranged at the lower end of the operating rod and used for controlling the electric chain saw to work, and the operating handle is provided with a trigger used for controlling the electric chain saw to work and a battery used for supplying power. The electric chain saw comprises a fixed shell fixedly arranged at the upper end of the operating rod in a sleeving mode, a rotating shell rotationally connected with the fixed shell, a rotating shaft installed in the rotating shell, a driving chain wheel, a gear disc and a chain plate, wherein the driving chain wheel and the gear disc are fixedly installed on the periphery of the rotating shaft, and the chain plate is fixed in the rotating shell and extends out of the rotating shell. The saw chain is installed on the periphery of the chain plate, bypasses the driving chain wheel and is meshed with the driving chain wheel, the motor is arranged in the fixed shell, the bevel gear is installed on a shaft body of the motor and is meshed with the gear disc, the locking structure is used for locking the fixed shell and the rotating shell which are relatively adjusted in angle together, and the outer shell is arranged on the periphery of the rotating shell. The shell further wraps the driving chain wheel and a part of the chain plate.

Description

Technical field:

[0001] The utility model relates to the technical field of electric tool products, in particular to a high-branch saw with adjustable angle. Background technology:

[0002] A high branch saw refers to a high-position branch pruning saw, also known as a lawn mower or a motorized sickle. It is one of the garden machinery commonly used for pruning trees in landscaping. It is a garden machinery with main application areas including landscaping, courtyard maintenance, road clearing, forest fire prevention, crop harvesting, etc.

[0003] The Chinese invention patent application with patent application number 202111383707.1 discloses a high-branch saw. The high-branch saw includes an operating rod, a saw head assembly and an alarm assembly. The operating rod is made of insulating material. The saw head assembly is arranged at one end of the operating rod, and the saw head assembly can cut high branches. The alarm assembly includes a sensor and an alarm. The sensor is arranged at the end of the operating rod where the saw head assembly is arranged, and the alarm is arranged at the other end of the operating rod, and the signal is connected to the sensor. When the saw head assembly approaches the live line, the sensor can sense the live line and transmit the sensing signal to the alarm. The alarm activates the alarm to remind the operator that he is about to approach the live line, thereby protecting the operator's personal safety. In addition, the alarm is arranged at the end of the operating rod away from the saw head assembly, which is closer to the operator, so that the operator can hear the alarm sound more clearly, preventing the noise of the saw head assembly when cutting trees from drowning out the alarm sound.

[0004] The saw head assembly is directly fixedly connected to the operating rod, so that the angle between the saw head assembly and the operating rod cannot be adjusted, resulting in the high branch saw being inconvenient to reach into branches with tricky angles for cutting, causing great trouble to the user.

[0005] In view of this, the inventors propose the following technical solutions. Utility model content:

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a high-branch saw with adjustable angle.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions: the angle-adjustable high-branch saw includes an operating rod, an electric chain saw arranged at the upper end of the operating rod, an operating handle arranged at the lower end of the operating rod and used to control the operation of the electric chain saw, the operating handle is provided with a trigger for controlling the operation of the electric chain saw and a battery for power supply, the electric chain saw includes a fixed shell fixedly sleeved on the upper end of the operating rod, a rotating shell rotatably connected to the fixed shell, a rotating shaft installed in the rotating shell, and a drive sprocket and a gear plate fixedly installed on the periphery of the rotating shaft, a chain plate fixed in the rotating shell and extending outside the rotating shell, a saw chain installed on the periphery of the chain plate and passing around the drive sprocket to engage with the drive sprocket, a motor arranged in the fixed shell, a bevel gear installed on the shaft of the motor and engaged with the gear plate, a locking structure for locking the fixed shell and the rotating shell after the angle is relatively adjusted, and an outer shell arranged on the periphery of the rotating shell, the outer shell also wraps the drive sprocket and a part of the chain plate.

[0008] Furthermore, in the above technical solution, circular windows are provided at both upper and lower ends of the fixed shell, and circular protrusions are provided at both upper and lower ends of the rotating shell. The circular protrusions pass through the circular windows and extend out of the circular windows to form a rotatable connection.

[0009] The cam is secured to a position adjacent to the first locking tooth, and the cam is secured to a position adjacent to the first locking tooth, wherein the cam is secured to a position adjacent to the first locking tooth.

[0010] Furthermore, in the above technical solution, a threaded hole is provided at the upper end of the bolt; the knob is provided with a countersunk hole, a gasket is provided in the countersunk hole, and the screw passes through the gasket and is spirally fixed to the threaded hole of the bolt that penetrates the lower end of the countersunk hole.

[0011] Furthermore, in the above technical solution, a circular slide groove and an anti-slip slide groove located outside the circular slide groove and having an L-shaped cross-section are provided at the upper end of the first lock tooth plate; a convex ring is provided at the lower end of the knob, and the convex ring is placed in the convex ring; a slider protruding outward and having an L-shape is provided at the outer edge of the lower end of the knob, and the slider extends into the anti-slip slide groove.

[0012] Furthermore, in the above technical solution, the spring is an annular sheet structure, which has a plurality of first arc-shaped protrusions protruding upward and second arc-shaped protrusions protruding downward that are connected in sequence. The first arc-shaped protrusions are in contact with the lower end surface of the first lock tooth plate, and the second arc-shaped protrusions are in contact with the upper end surface of the circular protrusion.

[0013] Furthermore, in the above technical solution, the fixed shell includes an upper fixed shell and a lower fixed shell that are butted up and down and fixedly connected by screws; the rotating shell includes an upper rotating shell and a lower rotating shell that are butted up and down and fixedly connected by screws; the outer shell includes an upper shell and a lower shell that are butted up and down and fixedly connected by screws.

[0014] Furthermore, in the above technical solution, an oil tank is provided inside the shell, the cover of the oil tank is exposed outside the shell, and a protective bar is provided outside the rotating shell, and the protective bar is placed outside the cover to protect the cover.

[0015] Furthermore, in the above technical solution, a branch hook for hooking branches is provided on the outside of the rotating shell.

[0016] Furthermore, in the above technical solution, a protective cover is further provided at the lower end of the operating handle, and the protective cover covers the periphery of the battery and forms a gap.

[0017] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: the present invention can adjust the angle of the chain plate relative to the operating rod by rotating the rotating shell relative to the fixed shell, and after the angle is adjusted, the locking structure locks the fixed shell and the rotating shell with the adjusted angle together, so that the chain plate forms a better angle relative to the operating rod, so that the chain plate can be extended into branches with tricky angles for cutting, thereby efficiently sawing off the branches, completing the work, meeting the use requirements, and having extremely strong market competitiveness. Description of the drawings:

[0018] Figure 1 It is a three-dimensional diagram of the utility model;

[0019] Figure 2 It is a partial perspective view of the electric chain saw of the present utility model;

[0020] Figure 3 Figure 2 is a three-dimensional representation of the locking structure after it has been disassembled;

[0021] Figure 4 It is a three-dimensional exploded view of the electric chain saw of the utility model;

[0022] Figure 5 It is a three-dimensional diagram of the first locking tooth plate in the utility model;

[0023] Figure 6 It is a three-dimensional diagram of the knob in the utility model;

[0024] Figure 7 It is a cross-sectional view of the electric chain saw of the present utility model; Specific implementation method:

[0025] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0026] See Figure 1-7 As shown, an angle-adjustable high-branch saw comprises an operating rod 1, an electric chain saw 2 arranged at the upper end of the operating rod 1, and an operating handle 3 arranged at the lower end of the operating rod 1 and used to control the operation of the electric chain saw 2. The operating handle 3 is provided with a trigger 31 for controlling the operation of the electric chain saw 2 and a battery 32 for powering the electric chain saw 2. When working, the user can hold the operating handle 3 and the operating rod 1 by hand, bring the electric chain saw 2 close to the branches on the tree, and pull the trigger 31 to drive the electric chain saw 2 to work, thereby sawing off the branches and achieving the purpose of pruning.

[0027] The electric chain saw 2 includes a fixed shell 21 fixedly mounted on the upper end of the operating rod 1, a rotating shell 22 rotatably connected to the fixed shell 21, a rotating shaft 23 installed in the rotating shell 22, and a drive sprocket 24 and a gear plate 25 fixedly mounted on the periphery of the rotating shaft 23, a chain plate 26 fixed in the rotating shell 22 and extending out of the rotating shell 22, a saw chain 201 installed on the periphery of the chain plate 26 and passing around the drive sprocket 24 to engage with the drive sprocket 24, a motor 202 arranged in the fixed shell 21, a bevel gear 203 mounted on the shaft of the motor 202 and engaged with the gear plate 25, a locking structure 27 for locking the fixed shell 21 and the rotating shell 22 together after the angle is adjusted relative to each other, and an outer shell 28 arranged on the periphery of the rotating shell 22, the outer shell 28 also covering a part of the drive sprocket 24 and the chain plate 26. When the angle of the rotating shell 22 and the fixed shell 21 does not need to be adjusted, the locking structure 27 locks the fixed shell 21 and the rotating shell 22 together, so that the chain plate 26 cannot rotate, so that the motor 202 cooperates with the bevel gear 203 to drive the sprocket plate 25 to rotate. When the gear plate 25 rotates, it drives the rotating shaft 23 and the drive sprocket 24 to rotate, thereby driving the saw chain 201 around the chain plate 26 to rotate, thereby achieving the sawing operation; when the angle of the rotating shell 22 and the fixed shell 21 needs to be adjusted, the locking structure 27 is unlocked to rotate the rotating shell 22 relative to the fixed shell 21, thereby adjusting the angle of the chain plate 26 relative to the operating rod 1, and after the angle is adjusted, the locking structure 27 locks the fixed shell 21 and the rotating shell 22 with the adjusted angle together, thereby ensuring that the chain plate 26 forms a better angle with the operating rod 1, so that the chain plate 26 can extend into the branches with tricky angles for cutting, thereby efficiently sawing the branches, completing the work, meeting the use requirements, and having strong market competitiveness.

[0028] The upper and lower ends of the rotating shaft 23 are installed in the rotating shell 22 through bearings.

[0029] The fixed shell 21 is provided with circular windows 211 at both the upper and lower ends, and the rotating shell 22 is provided with circular protrusions 221 at both the upper and lower ends. The circular protrusions 221 pass through the circular windows 211 and extend out of the circular windows 211 to form a rotatable connection, thereby ensuring that the rotating shell 22 can stably rotate relative to the fixed shell 21.

[0030] The specific structure of the locking structure 27 is as follows: the locking structure 27 includes a first locking tooth 271 provided on the periphery of the circular window 211 at the upper end of the fixed shell 21, a first locking tooth plate 273 which is sleeved on the polygonal protrusion 272 at the upper end of the circular protrusion 221 and can move up and down, a spring 274 provided between the upper end surface of the circular protrusion 221 and the lower end surface of the first locking tooth plate 273, and a knob 275 rotatably mounted on the first locking tooth plate 273, a bolt 276 provided on the upper end of the rotating shell 22 and extending out of the upper end surface of the polygonal protrusion 272, and a nut 278 fixed in the knob 275 and screwed together with the bolt 276. Placed in the circular window 211, the lower end of the first locking tooth plate 273 is provided with a second locking tooth 2731 adapted to the first locking tooth 271. When the knob 275 is rotated to drive the nut 278 to move upward relative to the bolt 276, the first locking tooth plate 273 is pushed upward relative to the fixed housing 21 under the elastic action of the spring 274, so that the second locking tooth 2731 is disengaged from the first locking tooth 271, and the state is unlocked; when the knob 275 is rotated to drive the nut 278 to move downward relative to the bolt 276, the knob 275 presses the first locking tooth plate 273 downward and compresses the spring 274, so that the second locking tooth 2731 engages with the first locking tooth 271, and the state is locked.

[0031] A threaded hole is provided at the upper end of the bolt 276; the knob 275 is provided with a countersunk hole 2751, and a gasket 2752 is provided in the countersunk hole 2751. The screw 2753 passes through the gasket 2752 and is screwedly fixed to the threaded hole of the bolt 276 that penetrates the lower end of the countersunk hole 2751, so that the knob 275 is rotatably installed above the rotating shell 22 and can prevent the knob 275 from detaching.

[0032] The outer edge of the lower end of the knob 275 is provided with an outwardly protruding and L-shaped slider 2755, which extends into the anti-slip groove 2733, thereby not only ensuring the stability of relative rotation, but also playing the role of preventing separation.

[0033] The upper end of the first lock tooth plate 273 is provided with a circular groove 2732 and an anti-slip groove 2733 with an L-shaped cross-section and located on the outside of the circular groove 2732. The lower end of the knob 275 is provided with a convex ring 2754, and the convex ring 2754 is placed in the convex ring 2754, so as to ensure that the knob 275 can rotate relative to the first lock tooth plate 273 without shaking, and the convex ring 2754 also serves to support the first lock tooth plate 273 downward, so that the first lock tooth plate 273 can be stably pressed down later, so that the second locking teeth 2731 of the first lock tooth plate 273 are engaged with the first locking teeth 271.

[0034] The spring 274 is an annular sheet structure, which has a plurality of first arc-shaped protrusions 2741 protruding upward and second arc-shaped protrusions 2742 protruding downward, which are connected in sequence. The first arc-shaped protrusions 2741 are in contact with the lower end surface of the first lock tooth plate 273, and the second arc-shaped protrusions 2742 are in contact with the upper end surface of the circular protrusion 221. It can have good elasticity and is easy to assemble.

[0035] The fixed shell 21 includes an upper fixed shell 204 and a lower fixed shell 205 that are connected by screws. The rotating shell 22 includes an upper rotating shell 206 and a lower rotating shell 207 that are connected by screws. The outer shell 28 includes an upper shell 208 and a lower shell 209 that are connected by screws.

[0036] An oil tank 281 is provided inside the outer shell 28, and a cover 282 of the oil tank 281 is exposed outside the outer shell 28, and a protective bar 222 is provided outside the rotating shell 22. The protective bar 222 is placed on the outside of the cover 282 to protect the cover 282, which can effectively prevent the cover 282 from being accidentally touched during use of the present invention, thereby avoiding the phenomenon of accidentally opening the cover 282.

[0037] The outside of the rotating shell 22 is provided with a branch hook 223 for hooking branches. When the utility model cuts a branch and the branch does not fall down in time, the cut branch can be hooked down through the branch hook 223, which is more convenient to use.

[0038] The lower end of the operating handle 3 is also provided with a protective cover 33, which covers the periphery of the battery 32 and forms a gap. During use, since the overall weight of the utility model is relatively heavy and requires the user to lift it for use, after a period of use, it is very likely that the force control during the lowering process of the utility model is not good, and the lower end of the operating handle 3 will quickly rush to the ground. At this time, since the lower end of the operating handle 3 is also provided with a protective cover 33, the protective cover 33 at the lower end of the operating handle 3 will first contact the ground, preventing the lower end of the operating handle 3 (with the battery) from directly contacting the ground, thereby effectively protecting the battery and the entire operating handle 3. The lower end of the protective cover 33 is also provided with a rubber pad 331, which can act as a buffer and provide better protection.

[0039] In summary, the present invention can adjust the angle of the chain plate 26 relative to the operating rod 1 by rotating the rotating shell 22 relative to the fixed shell 21, and after the angle is adjusted, the locking structure 27 locks the fixed shell 21 and the rotating shell 22 with the adjusted angle together, so that the chain plate 26 forms a better angle relative to the operating rod 1, so that the chain plate 26 can be extended into branches with tricky angles for cutting, thereby efficiently sawing off branches, completing the work, meeting the use requirements, and having extremely strong market competitiveness.

[0040] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made based on the structure, features and principles described in the scope of the patent application of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A high-branch saw with adjustable angle, comprising an operating rod (1), an electric chain saw (2) arranged at the upper end of the operating rod (1), an operating handle (3) arranged at the lower end of the operating rod (1) and used to control the operation of the electric chain saw (2), the operating handle (3) being provided with a trigger (31) for controlling the operation of the electric chain saw (2) and a battery (32) for powering the electric chain saw, characterized in that: The electric chain saw (2) comprises a fixed shell (21) fixedly sleeved on the upper end of the operating rod (1), a rotating shell (22) rotatably connected to the fixed shell (21), a rotating shaft (23) installed in the rotating shell (22), a driving sprocket (24) and a gear plate (25) fixedly installed on the periphery of the rotating shaft (23), a chain plate (26) fixed in the rotating shell (22) and extending outside the rotating shell (22), and a chain plate (26) installed on the periphery of the chain plate (26) and bypassing the driving sprocket (24) to engage with the driving sprocket. A saw chain (201) meshed with a driven sprocket (24), a motor (202) disposed in the fixed housing (21), a bevel gear (203) mounted on the shaft of the motor (202) and meshed with a gear plate (25), a locking structure (27) for locking the fixed housing (21) and the rotating housing (22) together after the angles are adjusted relative to each other, and a housing (28) disposed on the periphery of the rotating housing (22), wherein the housing (28) also encloses a portion of the driving sprocket (24) and the chain plate (26).

2. The angle-adjustable high-branch saw according to claim 1, characterized in that: The fixed shell (21) is provided with circular windows (211) at both upper and lower ends, and the rotating shell (22) is provided with circular protrusions (221) at both upper and lower ends. The circular protrusions (221) pass through the circular windows (211) and extend out of the circular windows (211) to form a rotatable connection.

3. The angle-adjustable high-branch saw according to claim 2, characterized in that: The locking structure (27) includes a first locking tooth (271) provided on the periphery of a circular window (211) at the upper end of the fixed shell (21), a first locking tooth plate (273) sleeved on a polygonal convex portion (272) at the upper end of the circular convex portion (221) and movable up and down, a spring (274) provided between the upper end surface of the circular convex portion (221) and the lower end surface of the first locking tooth plate (273), a knob (275) rotatably mounted on the first locking tooth plate (273), a bolt (276) provided on the upper end of the rotating shell (22) and extending out of the upper end surface of the polygonal convex portion (272), and a nut (278) fixed in the knob (275) and screwed with the bolt (276). The spring (274) is placed in the circular window (21 1), a second locking tooth (2731) adapted to the first locking tooth (271) is provided at the lower end of the first locking tooth plate (273); when the knob (275) is rotated to drive the nut (278) to move upward relative to the bolt (276), the first locking tooth plate (273) is pushed upward relative to the fixed shell (21) under the elastic action of the spring (274), so that the second locking tooth (2731) is disengaged from the first locking tooth (271), and the state is unlocked; when the knob (275) is rotated to drive the nut (278) to move downward relative to the bolt (276), the knob (275) presses the first locking tooth plate (273) downward and compresses the spring (274), so that the second locking tooth (2731) is engaged with the first locking tooth (271), and the state is locked.

4. The angle-adjustable high-branch saw according to claim 3, characterized in that: The upper end of the bolt (276) is provided with a threaded hole; the knob (275) is provided with a countersunk hole (2751), a gasket (2752) is provided in the countersunk hole (2751), and a screw (2753) passes through the gasket (2752) and is screwedly fixed to the threaded hole of the bolt (276) that penetrates the lower end of the countersunk hole (2751).

5. The angle-adjustable high-branch saw according to claim 3, characterized in that: The upper end of the first locking tooth plate (273) is provided with a circular sliding groove (2732) and an anti-slip sliding groove (2733) located outside the circular sliding groove (2732) and having an L-shaped cross-section; the lower end of the knob (275) is provided with a convex ring (2754), and the convex ring (2754) is placed in the convex ring (2754); the outer edge of the lower end of the knob (275) is provided with a slider (2755) protruding outward and having an L-shape, and the slider (2755) extends into the anti-slip sliding groove (2733).

6. The angle-adjustable high-branch saw according to claim 3, characterized in that: The spring (274) is an annular sheet structure, which has a plurality of first arc-shaped protrusions (2741) protruding upward and second arc-shaped protrusions (2742) protruding downward, which are connected in sequence. The first arc-shaped protrusions (2741) are in contact with the lower end surface of the first lock tooth plate (273), and the second arc-shaped protrusions (2742) are in contact with the upper end surface of the circular protrusion (221).

7. The angle-adjustable high-branch saw according to any one of claims 1 to 6, characterized in that: The fixed shell (21) includes an upper fixed shell (204) and a lower fixed shell (205) that are butted up and down and fixedly connected by screws; the rotating shell (22) includes an upper rotating shell (206) and a lower rotating shell (207) that are butted up and down and fixedly connected by screws; and the outer shell (28) includes an upper shell (208) and a lower shell (209) that are butted up and down and fixedly connected by screws.

8. The angle-adjustable high-branch saw according to any one of claims 1 to 6, characterized in that: An oil tank (281) is provided inside the housing (28), a cover (282) of the oil tank (281) is exposed outside the housing (28), and a protective bar (222) is provided outside the rotating shell (22), the protective bar (222) being placed outside the cover (282) to protect the cover (282).

9. The angle-adjustable high-branch saw according to any one of claims 1 to 6, characterized in that: The rotating shell (22) is provided with a branch hook (223) on the outside for hooking branches.

10. The angle-adjustable high-branch saw according to any one of claims 1 to 6, characterized in that: A protective cover (33) is also provided at the lower end of the operating handle (3), and the protective cover (33) covers the periphery of the battery (32) and forms a gap.

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