A branch sawing machine

Abstract

The present invention discloses a branch sawing machine, which includes a branch sawing machine body. A cutting depth maintaining structure is arranged on the cutting saw chain of the branch sawing machine body. The cutting depth maintaining structure includes at least two abutting parts, which are used to stabilize the position of the branch and ensure that the cutting depth is within the designed range. At least one of the abutting parts is arranged at a position exceeding the top of the cutting saw chain to facilitate abutting and stabilizing the branch. The branch sawing machine provided by the present invention first cuts a protection incision under the branch to avoid unnecessary damage to the tree trunk. After placing the branch sawing machine at the cutting position, the position of the branch is stabilized by the abutting parts to prevent the branch from shaking during the cutting process, etc. It can ensure that the cutting depth is neither too deep nor too shallow and always remains within the designed range. The cutting saw chain will not get stuck, with high working efficiency, long service life, and broad market application prospects.

Description

Technical Field

[0001] The present invention belongs to the technical field of branch sawing machines, and particularly relates to a branch sawing machine. Background Art

[0002] When pruning branches, in order to ensure that the trunk is not damaged, a protective cut must be made at a certain distance from the trunk at the lower part of the branch. For all chain saws currently sold on the market, when cutting the protective cut, either the chain saw has to be turned over for use, or the upper chain of the chain saw is directly used for cutting. This operation is very unsafe, inconvenient to operate, and the cutting depth is not easy to control. If the cutting is too deep, the chain will be clamped, and if the cutting is too shallow, it will not play a role in protecting the trunk. If the protective cut is not made, when the branch breaks, the lower part is likely to tear the trunk, causing a destructive impact on the trunk. Summary of the Invention

[0003] In order to solve the problems in the prior art, the purpose of the present invention is to provide a branch sawing machine.

[0004] To achieve the above purpose and reach the above technical effects, the technical solution adopted by the present invention is as follows:

[0005] A branch sawing machine includes a branch sawing machine body, and a cutting depth maintaining structure is provided on the branch sawing machine body. The cutting depth maintaining structure includes at least two abutting parts for stabilizing the position of the branch and ensuring that the cutting depth is within the designed range. At least one of the abutting parts is arranged at a position exceeding the top of the cutting saw chain to facilitate abutting and stabilizing the branch.

[0006] Further, at least one of the abutting parts has a vertex angle, and the angle of the vertex angle is flexibly selected according to actual needs.

[0007] Further, the minimum horizontal distance between two adjacent abutting parts in the cutting depth maintaining structure is 8 mm.

[0008] Further, the minimum vertical distance between the abutting part arranged at a position exceeding the top of the cutting saw chain and the vertex position of the cutting saw chain is 12.5 mm.

[0009] Further, the cutting depth maintaining structure includes two opposite abutting parts, and there is a transitional connection between the two abutting parts, such as an arc transitional connection. The two abutting parts are respectively an abutting part A and an abutting part B. The abutting part A is arranged at a position exceeding the top of the cutting saw chain, and the top of the abutting part A has a vertex angle or a sharp angle to facilitate better contact with the branch to be cut and stabilize the branch.

[0010] Further, the cutting depth maintaining structure is arranged on one side of the cutting saw chain of the branch sawing machine body.

[0011] Further, the sawing branch machine body is connected with a guide plate, a cutting saw chain, a driving sprocket, a motor and a holding handle. The cutting saw chain is installed in the groove of the guide plate, the driving sprocket is meshed with the cutting saw chain, a power switch connected to the motor and a trigger connected to the power switch are arranged on the holding handle. The trigger starts the motor by pressing the power switch. The motor is connected to the driving sprocket and drives the cutting saw chain to move in the groove of the guide plate through the driving sprocket to complete the cutting operation.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] The present invention discloses a sawing branch machine, which includes a sawing branch machine body. A cutting depth maintaining structure is arranged on the cutting saw chain of the sawing branch machine body. The cutting depth maintaining structure includes at least two abutting parts, which are used for stabilizing the position of the branch and ensuring that the cutting depth is within the designed range. At least one of the abutting parts is arranged at a position exceeding the top of the cutting saw chain to facilitate abutting and stabilizing the branch. The sawing branch machine provided by the present invention first cuts a protection incision under the branch to avoid unnecessary damage to the tree trunk. After placing the sawing branch machine at the cutting position, the position of the branch is stabilized by the abutting parts to prevent the branch from shaking during the cutting process, etc. It can ensure that the cutting depth is neither too deep nor too shallow and always remains within the designed range. The cutting saw chain will not get stuck, the working efficiency is high, the service life is long, and the market application prospect is broad. Description of the Drawings

[0014] Figure 1 is a structural schematic diagram of the present invention;

[0015] Figure 2 is a top view of the present invention;

[0016] Figures 3 - 4 are respectively partial enlarged structural schematic diagrams of the cutting depth maintaining structure of the present invention;

[0017] Figure 5 is a state diagram of the sawing branch machine of the present invention before cutting a branch;

[0018] Figure 6 is a state diagram of the sawing branch machine of the present invention after cutting a branch;

[0019] Figure 7 is a structural schematic diagram of the holding handle of Embodiment 1 of the present invention in a rotatable and adjustable state; wherein, Figure 7 a is a structural schematic diagram of the holding handle of Embodiment 1 of the present invention after rotating to the right, Figure 7 b is an initial structural schematic diagram of the holding handle of Embodiment 1 of the present invention without rotation, Figure 7 c is a structural schematic diagram of the holding handle of Embodiment 1 of the present invention after rotating to the left;

[0020] Figure 8Schematic diagram of the rotary adjustment knob and the anti-self-locking knob in Embodiment 1 of the present invention;

[0021] Figures 9 - 10 Schematic diagrams respectively showing the structure of the rotary adjustment knob when not locked when the trigger is in the natural release state in Embodiment 1 of the present invention;

[0022] Figure 11 Schematic diagram showing the structure of the rotary adjustment knob when locked when the trigger is in the pressing operation state in Embodiment 1 of the present invention;

[0023] Figure 12 Schematic diagram showing the structure of the rotary adjustment knob when not locked when the anti-self-locking knob is in the natural release state in Embodiment 1 of the present invention; wherein, Figure 12 a - 12b are respectively schematic diagrams of the structure of the rotary adjustment knob when not locked;

[0024] Figure 13 For the present invention Figure 12 Partial enlarged view of the positional relationship between the anti-self-locking knob and the rotary adjustment knob when the anti-self-locking knob is in the natural release state in the present invention;

[0025] Figure 14 Schematic diagram showing the structure of the rotary adjustment knob when locked when the anti-self-locking knob is pressed to the state of releasing the trigger in Embodiment 1 of the present invention; Figure 14 a - 14b are respectively schematic diagrams of the structure of the rotary adjustment knob when locked; Figure 14 c - 14d are respectively diagrams of the positional relationship between the anti-self-locking knob and the rotary adjustment knob when the anti-self-locking knob is pressed to the state of releasing the trigger;

[0026] Figure 15 For the present invention Figure 14 Enlarged view of c in the present invention;

[0027] Figure 16 For the present invention Figure 14 Enlarged view of d in the present invention;

[0028] Wherein, 1, cutting saw chain; 1 - 1, tree branch; 2, abutting part A; 3, abutting part B; 4, guide plate; 5, driving sprocket; 6, motor; 7, holding handle; 8, power switch; 9, trigger; 10, transmission system; 11, rotary adjustment knob; 12, reset elastic member; 13, first protrusion; 14, locking mechanism; 15, second protrusion; 16, anti-self-locking knob; 17, limiting part. Detailed implementation manners

[0029] The embodiments of the present invention will be elaborated in detail below, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making the protection scope of the present invention more clearly defined.

[0030] As Figures 1 - 6As shown in the figure, a branch sawing machine includes a branch sawing machine body, which includes a cutting saw chain 1, a guide plate 4, a driving sprocket 5, a motor 6 and a holding handle 7. The cutting saw chain 1 is installed in the groove of the guide plate 4. The driving sprocket 5 meshes with the cutting saw chain 1. A power switch 8 connected to the motor 6 and a trigger 9 connected to the power switch 8 are provided on the holding handle 7. The trigger 9 starts the motor 6 by pressing the power switch 8. The motor 6 is connected to the driving sprocket 5 through a transmission system 10 (transmission gears). After the motor 6 starts, power is transmitted to the driving sprocket 5 through the transmission system 10, and then the cutting saw chain 1 is driven to move in the groove of the guide plate 4 by driving the driving sprocket 5 to complete the cutting operation. A cutting depth maintaining structure is provided on the cutting saw chain 1 of the branch sawing machine body. The cutting depth maintaining structure includes at least two abutting parts connected in a transition manner. The position of the branch 1-1 to be cut is stabilized through the abutting parts and the cutting depth is ensured to be within the designed range. At least one abutting part is arranged at a position exceeding the top of the cutting saw chain 1 to facilitate abutting and stabilizing the branch 1-1.

[0031] As a more preferred embodiment, at least one abutting part (top) has a vertex angle or a sharp angle, which is convenient for piercing into the tree when cutting thick trees and better stabilizes the position of the branch 1-1.

[0032] As a more preferred embodiment, the minimum horizontal distance between two adjacent abutting parts in the cutting depth maintaining structure is 8 mm.

[0033] As a more preferred embodiment, the minimum vertical distance between the abutting part arranged at a position exceeding the top of the cutting saw chain and the vertex position of the cutting saw chain 1 is 12.5 mm.

[0034] As a more preferred embodiment, the cutting depth maintaining structure of the branch sawing machine of the present invention includes two opposite abutting parts, which are arc-connected between the two abutting parts. The two abutting parts are respectively an abutting part A 2 and an abutting part B 3. The abutting part A2 is arranged at a position exceeding the top of the cutting saw chain 1. The top of the abutting part A 2 has a vertex angle or a sharp angle, which is convenient for better contacting with the branch 1-1 to be cut and stabilizing the branch 1-1.

[0035] The working principle of the motor 6 driving the cutting saw chain 1 of the present invention is the same as that of the prior art, and existing equipment can be used as long as it is ensured that the cutting saw chain 1 can operate normally.

[0036] The present invention can design the holding handle 7 and the branch sawing machine body into an integral structure according to actual needs. At this time, the holding handle 7 is immovable. The present invention can also design the holding handle 7 to be rotatably adjustable relative to the branch sawing machine body, which is convenient for users to find the best cutting angle and improves accessibility.

[0037] The working principle of the present invention is as follows:

[0038] First, a protective opening is cut below the branch 1-1 to be cut to prevent the entire tree trunk from suffering unnecessary damage. After the branch saw disclosed in the present invention is placed at the cutting position of the branch 1-1, the position of the branch 1-1 is stabilized by the interference portion of the cutting depth maintaining structure to prevent the branch 1-1 from shaking during the cutting process. The motor 6 is started by pressing the trigger 9. The motor 6 drives the drive sprocket 5 through the transmission system 10 and then drives the cutting saw chain 1 to move in the groove of the guide plate 4 to start the cutting operation. The branch 1-1 is broken at the branch tearing opening and disconnected at the protective opening without tearing off other branches. The cutting process is neat and tidy, the incision depth is neither too deep nor too shallow, and is always kept within the design range. The cutting saw chain 1 will not get stuck, the working efficiency is high, and the service life is long.

[0039] Example 1

[0040] like Figures 1 - 16 As shown, a branch sawing machine includes a branch sawing machine body, and the branch sawing machine body includes a cutting saw chain 1, a guide plate 4, a driving sprocket 5, a motor 6 and a gripping handle 7. The cutting saw chain 1 is installed in the groove of the guide plate 4, and the driving sprocket 5 is meshed with the cutting saw chain 1. The gripping handle 7 is provided with a power switch 8 connected to the motor 6 and a trigger 9 connected to the power switch 8. The trigger 9 starts the motor 6 by pressing the power switch 8. The motor 6 is connected to the driving sprocket 5 through a transmission system 10 (transmission gear). After the motor 6 is started, the driving sprocket 5 is driven by the transmission system 10 and then drives the cutting saw chain 1 to move in the groove of the guide plate 4 to perform a cutting operation. The cutting saw chain 1 of the branch sawing machine body is provided with a cutting depth maintaining structure, and the cutting depth maintaining structure includes two opposing abutting parts, and the two abutting parts are connected in an arc shape, which is used to stabilize the position of the branch 1-1 and ensure that the incision depth is within the designed range. The two abutting parts are respectively abutting part A 2 and abutting part B 3. The abutting part A 2 has a top angle or a sharp corner, which is convenient for piercing into the branch 1-1 when cutting thick branches, and better stabilizes the position of the branch 1-1.

[0041] The minimum horizontal distance between the interference part A2 and the interference part B3 in the cutting depth maintaining structure is 8 mm, and the minimum vertical distance between the interference part A2 and the top position of the cutting saw chain 1 is 12.5 mm.

[0042] The working principle of the motor 6 of the present invention driving the cutting saw chain 1 is the same as that of the prior art, and the existing equipment can be used, and it is only necessary to ensure that the cutting saw chain 1 can operate normally.

[0043] To facilitate the user in finding the optimal cutting angle and improve accessibility, the holding handle 7 of the first embodiment can perform a rotational adjustment movement relative to the sawing branch machine body. More specifically, a rotational adjustment knob 11, a reset elastic member 12, a locking mechanism 14, and an anti-self-locking knob 16 are also provided on the sawing branch machine body. The rotational adjustment knob 11 forms an interlock with at least one of the anti-self-locking knob 16 and the trigger 9 to ensure that there is only one and only one state between the operating state of the sawing branch machine and the rotatable movement state of the holding handle 7. When the trigger 9 presses the power switch 8 to turn on or off the power, there is only one and only one state between the operating state of the sawing branch machine and the rotatable movement state of the holding handle 7. A reset elastic member 12 is provided between the rotational adjustment knob 11 and the holding handle 7. The reset elastic member 12 is a spring and is used for the reset function.

[0044] A rotating shaft can be vertically provided at one end of the sawing branch machine body close to the holding handle 7, so that the holding handle 7 rotates relative to the sawing branch machine body around the rotating shaft. The rotating shaft can be used as an independent component, or the rotating shaft can be not provided. It only needs to ensure that a rotation axis 18 is formed on the sawing branch machine body to facilitate the holding handle 7 to rotate left or right relative to the sawing branch machine body around the rotation axis 18.

[0045] A first protrusion 13 adapted to the locking mechanism 14 is provided on the rotational adjustment knob 11. The locking mechanism 14 of the first embodiment can be designed into structures such as meshing teeth or locking grooves provided on the side of the saw chain mechanism close to the holding handle 4 as needed. When the first protrusion 11 is clamped on the locking mechanism 14, the rotational adjustment knob 11 is locked, and the holding handle 4 is in a locked state and cannot perform a rotational adjustment movement.

[0046] A second protrusion 15 is also provided on the rotational adjustment knob 11. Two transition-connected limiting portions 17 that face each other and are adapted to the second protrusion 15 are provided on the anti-self-locking knob 16. The locking of the rotational adjustment knob 11 is achieved by the limiting portion 17 abutting against the second protrusion 15. When the second protrusion 15 moves in the groove between the two limiting portions 17, the rotational adjustment knob 11 is not locked by the anti-self-locking knob 16.

[0047] The rotational adjustment knob 11 of the first embodiment can drive the holding handle 4 to rotate together, or can be designed not to rotate together with the holding handle 4. The rotational adjustment knob 11 can perform a rotational movement or a translational movement. The locking mechanism 14 can be designed on the saw chain mechanism or on the holding handle 4. It only needs to ensure that the locking mechanism 14 can lock the rotational adjustment knob 11 and can control whether the holding handle 4 can rotate relative to the saw chain mechanism by whether the rotational adjustment knob 7 is locked or not.

[0048] When the trigger 9 is in the natural release state, the power switch 8 on the grip handle 7 is turned off, the sawing machine is not powered on and does not start, and cutting operations cannot be performed at this time. The trigger 9 has no position restriction on the rotation adjustment knob 11, and the rotation adjustment knob 11 is in the free adjustment state. The rotation adjustment knob 11 can be freely operated, and the rotation adjustment knob 11 is disengaged from the locking engagement of the locking mechanism 14 and the anti-self-locking button 16. The grip handle 7 is in a rotatable movement state, and the position of the grip handle 7 can be adjusted arbitrarily. The rotation adjustment knob 11 is not locked by the trigger 9, the anti-self-locking button 16, and the locking mechanism 14. The grip handle 7 rotates left and right around the rotation axis 18 relative to the sawing machine body or the guide plate 4 for adjusting the angle between the grip handle 7 and the cutting surface, facilitating the operator to find a suitable cutting angle. The reset is achieved through the reset elastic member 12. During the rotation process, the trigger 9 cannot be operated, and the sawing machine remains in the non-start state.

[0049] Figure 11 This is a schematic structural diagram of the rotation adjustment knob 11 being locked when the trigger 9 of Embodiment 1 is in the pressed operation state. When the trigger 9 is in the pressed operation state, the trigger 9 presses the power switch 8 on the grip handle 7 to turn on the power, and the sawing machine is in the running state. The top of the trigger 9 abuts against the bottom of the rotation adjustment knob 11, and the rotation adjustment knob 11 is locked by the trigger 9 and the locking mechanism 14. The first protrusion 13 is interlocked with the locking mechanism 14, as Figure 11 marked within the black circle in the figure. At this time, the grip handle 7 is in the locked state and cannot perform the rotation adjustment movement, and the position of the grip handle 7 is fixed.

[0050] When the first protrusion 13 on the rotation adjustment knob 11 is stuck on the locking mechanism 14, the rotation adjustment knob 11 is locked. At this time, the grip handle 7 is in the locked state and the angular position cannot be adjusted, avoiding safety accidents caused by accidentally operating the position of the grip handle 7 when the sawing machine is running and improving the use safety.

[0051] When the anti-self-locking button 16 is in the natural release state, the trigger 9 is locked, and the trigger 9 is in the natural release state. The sawing machine is not powered on and does not start. At this time, the rotation adjustment knob 11 can move in the groove between the two opposing limiting portions 17. The limiting portion 17 of the anti-self-locking button 16 does not limit the movement of the rotation adjustment knob 11. The rotation adjustment knob 11 is not locked by the trigger 9, the anti-self-locking button 16, and the locking mechanism 14. At this time, the grip handle 7 is in a rotatable movement state for adjusting the angle between the grip handle 7 and the cutting surface, and the anti-self-locking button 16 cannot be operated during the rotation process, and the sawing machine is not powered on and started.

[0052] When the anti-self-locking button 16 is pressed to the trigger release state, the power switch 8 on the holding handle 7 is controlled by the trigger 9 to connect or disconnect the power supply, which is used to control the start and stop of the branch saw. When the anti-self-locking button 16 is pressed to the trigger release state and the power switch 8 on the holding handle 7 is controlled by the trigger 9 to connect the power supply, the branch saw starts. The anti-self-locking button 16 abuts against the bottom of the rotary adjustment knob 11, and the limiting portion 17 of the anti-self-locking button 16 abuts against the second protrusion 15 at the bottom of the rotary adjustment knob 11. At this time, the locking mechanism 14 and the anti-self-locking button 16 jointly lock the rotary adjustment knob 11, restricting the movement of the rotary adjustment knob 11. After the rotary adjustment knob 11 is locked, it cannot be operated normally and always remains in the locked position. The holding handle 7 cannot rotate and adjust relative to the branch saw body, and the position of the holding handle 7 is fixed, but the branch saw is in a normal operating state, ensuring safety in use.

[0053] When the branch saw of the present invention cuts branches and the like, the appropriate cutting angle can be selected by adjusting the angle of the holding handle 7 relative to the cutting surface according to actual needs, completely avoiding cutting objects such as falling branches, and can also perform reverse operation, cutting closer to the ground, with strong accessibility and high practical value.

[0054] The working principle of the present invention is as follows:

[0055] First, cut a protection opening under the branch to be cut to avoid unnecessary damage to the tree trunk. After placing the branch saw disclosed in the present invention at the cutting position of the branch, the position of the branch is stabilized by the abutting portion of the cutting depth maintaining structure to prevent the branch from shaking during the cutting process. By pressing the trigger 9, the motor 6 is started. The motor 6 drives the driving sprocket 5 through the transmission system 10 and then drives the cutting saw chain 1 to move in the groove of the guide plate 4, starting the operation of cutting the branch. The branch breaks at the branch tear opening and disconnects at the protection opening, without tearing other branches incidentally. The cutting process is clean and neat. The cutting depth is neither too deep nor too shallow and always remains within the designed range. The cutting saw chain 1 will not get stuck, with high working efficiency and long service life. The position of the holding handle 7 can be rotated and adjusted according to actual needs to find the best cutting angle.

[0056] For the parts not described in detail in the present invention, the prior art can be adopted and will not be elaborated herein.

[0057] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A branch sawing machine, characterized in that, It includes a tree branch sawing machine body, and a cutting depth maintaining structure is arranged on the tree branch sawing machine body. The cutting depth maintaining structure includes at least two abutting parts, which are used to stabilize the position of the tree branch and ensure that the cutting depth is within the designed range. At least one of the abutting parts is arranged at a position exceeding the top of the cutting saw chain to facilitate abutting and stabilizing the tree branch; At least one of the abutting parts has a vertex angle; The minimum horizontal distance between two adjacent abutting parts in the cutting depth maintaining structure is 8 mm; The minimum vertical distance between the abutting part arranged at a position exceeding the top of the cutting saw chain and the vertex position of the cutting saw chain is 12.5 mm; The cutting depth maintaining structure is arranged on one side of the cutting saw chain of the tree branch sawing machine body. The cutting depth maintaining structure includes two opposite abutting parts, and the two abutting parts are connected by an arc transition. The two abutting parts are respectively an abutting part A and an abutting part B. The abutting part A is arranged at a position exceeding the top of the cutting saw chain, and the top of the abutting part A has a vertex angle or a sharp angle, which is convenient for better contacting and stabilizing the tree branch to be cut; The tree branch sawing machine body is connected with a guide plate, a cutting saw chain driving sprocket, a motor and a holding handle. The cutting saw chain is installed in the groove of the guide plate, the driving sprocket is meshed with the cutting saw chain, a power switch connected to the motor and a trigger connected to the power switch are arranged on the holding handle. The trigger starts the motor by pressing the power switch. The motor is connected to the driving sprocket and drives the cutting saw chain to move in the groove of the guide plate through the driving sprocket to complete the cutting operation; First, cut a protection opening under the tree branch to be cut to avoid unnecessary damage to the whole tree trunk. After placing the tree branch sawing machine at the cutting position of the tree branch, stabilize the position of the tree branch through the abutting part of the cutting depth maintaining structure to prevent the tree branch from shaking during the cutting process. Start the motor by pressing the trigger. The motor drives the driving sprocket through the transmission system and then drives the cutting saw chain to move in the groove of the guide plate to start the cutting operation. The tree branch breaks at the tree branch tearing opening and disconnects at the protection opening, without tearing other tree branches incidentally. The cutting process is clean and neat. The cutting depth is neither too deep nor too shallow and always remains within the designed range. The cutting saw chain will not get stuck. The working efficiency is high and the service life is long.

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