Bimorphic bamboo cutting saw and using method thereof

Abstract

The invention discloses a bimorphic bamboo cutting saw and a using method thereof.The bimorphic bamboo cutting saw comprises a bamboo cutting saw body, a saw chain guide plate, an operating handle assembly mechanism and a chip removal mechanism, the operating handle assembly mechanism enables the bamboo cutting saw to have a cutting mode and a material making mode, the cutting mode is used for cutting a whole bamboo, and the material making mode is used for pruning the bamboo, breaking through bamboo joints and slicing the bamboo; operators do not need to carry various tools to enter the bamboo forest, and operation complexity and transition burden are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of sawing tools, and particularly relates to a dual-mode bamboo felling saw and its usage method. Background Art

[0002] China is one of the countries with the richest bamboo resources in the world, enjoying unique bamboo resources. Due to the relatively short growth cycle of bamboo, it can be an ideal material choice for sustainable development.

[0003] Currently, bamboo is generally felled by a chain saw. Due to the strength and toughness of bamboo, when an operator fells bamboo, in order to ensure sufficient feeding force for sawing the bamboo and prevent slipping during the sawing process, the operator needs to operate with both hands. After the whole bamboo is sawn, pruning is required. Existing pruning tools usually rely on tools such as machetes. Bamboo felling workers need to carry multiple tools into the bamboo forest for operation, increasing the complexity of the operation and the burden of transferring.

[0004] Therefore, in order to facilitate the felling and pruning of bamboo, a bamboo felling saw that can fell and prune bamboo is needed. Summary of the Invention

[0005] The purpose of the present invention is to provide a dual-mode bamboo felling saw and its usage method to solve the problems in the background art that existing operators need to hold the bamboo felling saw with both hands and need to carry multiple tools into the bamboo forest, increasing the complexity of the operation and the burden of transferring.

[0006] To achieve the above purpose, the present invention provides a dual-mode bamboo felling saw, including a bamboo felling saw main body, a sawing component, an operating handle component mechanism, and a chip removal mechanism; the sawing component is installed on the bamboo felling saw main body; the operating handle component mechanism includes an operating handle component rotatably installed on the bamboo felling saw main body, a rotation switching structure installed on the operating handle component, and the operating handle component can be rotated through the rotation switching structure; the chip removal mechanism is installed on the bamboo felling saw main body and is used for discharging the chips generated during the felling process; there are a felling mode and a timber processing mode for the operating handle component mechanism and the sawing component; the felling mode is used for sawing the whole bamboo. When taking the bamboo felling saw through the operating handle component mechanism, the sawing surface of the sawing component is parallel to the horizontal plane; the timber processing mode is used for pruning the sawn whole bamboo, punching through bamboo joints, and cutting bamboo materials. When taking the bamboo felling saw in the same posture through the operating handle component mechanism, the sawing surface of the sawing component forms an angle with the horizontal plane.

[0007] Optionally, the sawing assembly includes a guide plate mounted on the bamboo felling saw body and a saw chain mounted on the guide plate; the bamboo felling saw body includes a box body, a fuel tank mounted on the box body, a first space is formed between the fuel tank and the box body, and a power source connected to a power supply is provided in the first space. The power source is connected to the saw chain and can drive the saw chain to move to saw the sawn timber.

[0008] Optionally, a detachable baffle assembly is pivotally mounted on the box body, and the detachable baffle assembly can rotate around the pivot center; a traction and reset mechanism connected to the detachable baffle assembly is mounted on the box body, and the traction and reset mechanism is used to provide a reset force for the detachable baffle assembly; the detachable baffle assembly also has a felling mode and a bucking mode.

[0009] When the detachable baffle assembly is in the felling mode, the detachable baffle assembly and the guide plate form a scissor structure. The detachable baffle assembly is located on the side where the saw chain moves towards the bamboo felling saw body, and the distance between the detachable baffle assembly and the guide plate decreases from the end of the guide plate far from the bamboo felling saw body towards the bamboo felling saw body. At this time, the guide plate can be driven to move back and forth by operating the handle assembly, so that the saw chain can saw the whole bamboo.

[0010] When the detachable baffle assembly is in the bucking mode, the detachable baffle assembly is located on the side where the saw chain moves away from the bamboo felling saw body. At this time, the guide plate can be driven to move up and down by operating the handle assembly, so that the saw chain can trim the sawn whole bamboo.

[0011] Optionally, the bamboo felling saw body further includes a controller located in the first enclosed space, an oil pump and a sprocket mounted on the output shaft of the power source, an upper fuel tank and a lower fuel tank mounted on the lower fuel tank, and a fuel tank cover assembly mounted on the upper fuel tank and the lower fuel tank.

[0012] Optionally, the sprocket meshes with the saw chain; a filter screen is provided on the inlet pipe of the oil pump, and a third space is formed in the fuel tank, and the third space is communicated with the inlet pipe of the oil pump.

[0013] Optionally, a first fixed shaft and a second fixed shaft are provided on the box body. The number of the second fixed shafts is not less than two and are respectively located on both sides of the bamboo felling saw body; a power supply connector is provided on the box body, and a connecting wire is mounted on the power supply connector.

[0014] Optionally, a circular groove or / and a cylindrical convex block for movably connecting with the handle assembly are formed at the front end and / or the rear end of the box body and the fuel tank; the detachable baffle assembly includes a baffle, a quick-release structure provided on the baffle and the second fixed shaft, and the baffle is detachably hooked on any second fixed shaft through the quick-release structure and rotates around the second fixed shaft.

[0015] Optionally, the detachable baffle assembly can be detachably mounted on any second fixed shaft, and the detachable baffle assembly can rotate around the second fixed shaft; a replacement cylinder is sleeved on the other second fixed shaft without a baffle mounted thereon.

[0016] Optionally, the box body is provided with a heat dissipation inlet hole communicating with the first sealing area, and an air filter and an air filter cover are installed on the heat dissipation inlet hole; the traction and reset mechanism includes a fixed pin shaft, a traction connection block and a reset elastic member; the fixed pin shaft is installed on the baffle.

[0017] Optionally, the traction connection block is movably installed on the bamboo cutting saw main body, a chute is provided on the traction connection block, the chute includes a traction groove, a transition groove communicating with the traction groove, a limit groove provided at one end of the transition groove away from the traction groove, and the fixed pin shaft moves in the chute; one end of the reset elastic member is fixed on the traction connection block, and the other end is fixedly installed on the first fixed shaft.

[0018] Optionally, the operation handle assembly includes a first handle movably installed on the bamboo cutting saw main body, a drive switch installed on the first handle, and the first handle is provided with the rotation and switching structure.

[0019] Optionally, a second space is provided on the first handle, and the drive switch and the rotation and switching structure are installed in the second space.

[0020] Optionally, the first handle includes a right handle and a left handle joined to the right handle, and the second space is formed by the splicing of the left handle and the right handle.

[0021] Optionally, the drive switch includes a trigger and a trigger control button, and a trigger switch corresponding to the trigger is installed in the second space.

[0022] Optionally, the operation handle assembly further includes a second handle installed on the first handle and movably connected to the bamboo cutting saw main body, and the second handle can also be provided with the rotation and switching structure.

[0023] Optionally, the rotation and switching structure includes a handle locking block, a handle locking elastic member, and a handle locking switch; the handle locking block includes a limiting portion, a connecting portion provided on the limiting portion, a matching portion provided on the side surface of the connecting portion, a matching hole provided on the matching portion, a slot provided on the connecting portion, the first handle, and / or the second handle is movably connected to the connecting portion.

[0024] Optionally, one end of the handle locking elastic member is connected to the handle locking block, and the other end is connected to the first handle; the handle locking switch is provided with a plug block adapted to the slot; a plurality of card slots are provided on the lower fuel tank and the box body, the card slots correspond to the handle locking block, and the card slots are distributed at intervals around the rotation and switching structure.

[0025] Optionally, the handle locking elastic member is sleeved on the matching portion.

[0026] Optionally, a flow deflector is provided on the side wall of the fuel tank.

[0027] Optionally, a first flow deflector is provided on the lower fuel tank, or a second flow deflector is installed on the upper fuel tank.

[0028] The present invention also provides a method for using a dual-mode bamboo felling saw, the steps are as follows: First step, switch the operating handle assembly mechanism and the detachable baffle assembly to the felling mode; Second step, start the bamboo felling saw, and make the sawing assembly move back and forth to saw the bamboo; Third step, move the bamboo felling saw close to the bamboo to be sawn, and make the bamboo located between the sawing assembly and the baffle; Fourth step, stop the bamboo felling saw, and switch the operating handle assembly mechanism to the timber processing mode; Fifth step, start the bamboo felling saw again, and prune and cut the bamboo sawn in the third step.

[0029] Compared with the prior art, the present invention provides a dual-mode bamboo felling saw and a method for using the same, which have the following beneficial effects: For the dual-mode bamboo felling saw and the method for using the same, through the setting of the operating handle assembly mechanism, the bamboo felling saw has a felling mode and a timber processing mode. The felling mode is used for cutting whole bamboo, and the timber processing mode is used for bamboo pruning, punching bamboo joints and slicing bamboo. The operator does not need to carry a variety of tools into the bamboo forest, reducing the operation complexity and the burden of transferring sites.

[0030] In addition, through the setting of the detachable traction mechanism of the present invention, in cooperation with the sawing assembly, the bamboo felling saw can achieve a feeding action similar to that of scissors during the bamboo felling process. In cooperation with the traction reset mechanism, the friction generated when the saw chain saws the bamboo can be used to make the saw chain move forward, so that the bamboo moves towards the main body of the bamboo felling saw, enabling the saw chain to cut into the bamboo, thereby significantly improving the bamboo felling efficiency and reducing the manpower consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0032] Figure 2 is a schematic diagram of the structure of the bamboo felling saw of the present invention.

[0033] Figure 3 is a schematic diagram of the structure of the bamboo felling saw in another working mode of the present invention.

[0034] Figure 4 is an exploded view of the bamboo felling saw of the present invention.

[0035] Figure 5 is a cross-sectional view of the bamboo felling saw of the present invention.

[0036] Figure 6 It is a schematic structural diagram of the rotation switching mechanism of the present invention.

[0037] Figure 7 It is a schematic structural diagram of the box body and the lower fuel tank of the present invention.

[0038] Figure 8 It is a schematic structural diagram of the traction and reset mechanism of the present invention.

[0039] Figure 9 It is an installation schematic diagram of the detachable baffle assembly of the present invention.

[0040] Figure 10 It is a disassembly schematic diagram of the detachable baffle assembly of the present invention.

[0041] Figure 11 It is the present invention Figure 10 A partial enlarged view at position A in

[0042] Figure 12 It is a disassembly schematic diagram of the quick-release structure of the present invention.

[0043] Figure 13 It is a schematic diagram of the cooperation between the second fixed shaft and the ball of the present invention.

[0044] Figure 14 It is a schematic diagram of the ball limiting structure of the present invention.

[0045] Figure 15 It is a schematic structural diagram of the upper fuel tank of the air filter cover of the present invention.

[0046] Figure 16 It is a disassembly schematic diagram of the overall structure in Embodiment 2 of the present invention.

[0047] Figure 17 It is an installation schematic diagram of the deflector in Embodiment 2 of the present invention.

[0048] Figure 18 It is an installation schematic diagram of the chip deflector in Embodiment 3 of the present invention.

[0049] Figure 19 It is a schematic diagram of the connection between the operating handle assembly and the front end of the bamboo cutting saw main body in Embodiment 4 of the present invention.

[0050] Figure 20 It is the present invention Figure 19 A schematic diagram of the operating handle assembly in

[0051] Figure 21 It is a schematic diagram of the connection between the operating handle assembly and the rear end of the bamboo cutting saw main body in Embodiment 4 of the present invention.

[0052] Figure 22 It is the present inventionFigure 21 Schematic diagram of the middle operating handle assembly.

[0053] Identifications in the figure: 1. Bamboo cutting saw main body; 11. Box body; 110. First fixed shaft; 111. Second fixed shaft; 112. Power connection head; 113. Connecting wire; 114. Replacement cylinder; 115. Heat dissipation inlet hole; 116. Air filter; 117. Air filter cover; 1171. Chip blocking plate; 12. Lower fuel tank; 121. First flow guiding cover; 13. Power source; 14. Controller; 15. Oil pump; 151. Filter screen filter; 16. Sprocket; 17. Upper fuel tank; 171. Second flow guiding cover; 18. Fuel tank cover assembly; 19. Hook; 2. Sawing assembly; 21. Guide plate; 22. Saw chain; 3. Detachable baffle assembly; 31. Baffle; 32. Quick release structure; 320. Ball limiting structure; 3201. Cover plate; 3202. Eccentric rotating shaft; 3203. Rotating disk; 3204. Contact plate; 3205. Contact mounting groove; 3206. Contact spring; 3207. Slide block; 322. Mounting hole group; 3221. First through hole; 3222. Second through hole; 323. Fixed sleeve; 3231. Jack; 3232. Movable hole; 3233. Slot; 3234. Rotation limiting groove; 324. Ball; 325. Rotation limiting ring; 3251. Limiting block; 326. Snap ring; 3261. Fixed insertion block; 327. Limiting groove; 328. Chute; 329. Torsion spring; 4. Operating handle assembly mechanism; 41. Operating handle assembly; 42. Rotation switching structure; 421. Card slot; 423. Handle locking block; 4231. Limiting part; 4232. Connecting part; 4233. Matching part; 4234. Matching hole; 4235. Slot; 424. Handle locking elastic part; 425. Handle locking switch; 4251. Insertion block; 43. First handle; 431. Left handle; 432. Right handle; 433. Deputy handle; 44. Second handle; 45. Drive switch; 451. Trigger; 452. Trigger control button; 453. Trigger switch; 5. Chip removal mechanism; 51. Side cover plate; 511. Chip guiding plate; 52. First chip removal port; 53. Second chip removal port; 54. Chip prevention cover; 6. Power supply; 7. Traction reset mechanism; 71. Fixed pin shaft; 72. Traction connecting block; 721. Traction groove; 722. Transition groove; 723. Limiting groove; 73. Reset elastic part; 8. Rubber pad; 9. Upper cover. Detailed implementation mode

[0054] The following is a detailed description in combination with the drawings and specific implementations. Many specific details are set forth in the following description in order to fully understand this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the connotation of this utility model. Therefore, this utility model is not limited by the specific embodiments disclosed below.

[0055] A dual - form bamboo saw and its usage invention of the present application can be applicable to occasions where it is necessary to frequently change postures for sawing lumber, etc. Of course, it can also be used in other similar application scenarios. Below, a detailed description of a dual - form bamboo saw will be given.

[0056] Refer to the attached Figure 1 — Figure 15 As shown in the figure, it shows a structural schematic diagram of a preferred embodiment of a dual - form bamboo saw of the present application. This dual - form bamboo saw includes a bamboo - felling saw main body 1, a sawing assembly 2 installed on the bamboo - felling saw main body, a detachable baffle assembly 3 installed on the bamboo - felling saw main body 1, an operating handle assembly mechanism 4 installed on the bamboo - felling saw main body 1, a chip - discharging mechanism 5 installed on the bamboo - felling saw main body 1, a power source 6 for providing electric energy, a traction and reset mechanism 7 installed on the bamboo - felling saw main body 1 and the detachable baffle assembly 3, and a rubber pad 8 installed at the bottom of the bamboo - felling saw main body 1.

[0057] Refer to the attached Figure 1 — Figure 15 As shown in the figure, in the present invention, the bamboo - felling saw main body 1 includes a box body 11, a fuel tank installed on the box body 11. This fuel tank includes a lower fuel tank 12, an upper fuel tank 17 installed on the lower fuel tank 12, and a fuel - tank cover assembly 18 installed on the upper fuel tank 17. And a first space is formed between the box body 11 and the lower fuel tank 12. A power source 13 is provided in this first space. The box body 11 is provided with a first fixed shaft 110 and a second fixed shaft 111. The number of the second fixed shafts 111 is not less than two and they are respectively located on both sides of the bamboo - felling saw main body 1. A controller 14 located in the first enclosed space, an oil pump 15 and a driving sprocket 16 installed on the output shaft of the power source 13. The driving sprocket 16 meshes with the saw chain 22; a filter screen filter 151 is provided on the inlet pipe of the oil pump 15. A third space is formed between the lower fuel tank 12 and the upper fuel tank 17, and this third space is connected to the inlet pipe of the oil pump 15; the box body 11 is provided with a power - connection head 112, and a connecting wire 113 is installed on this power - connection head 112, and this connecting wire 113 is connected to the power source 6; the front and rear ends of the box body 11 and the lower fuel tank 12 are respectively spliced to form an annular groove and a cylindrical convex block for movably connecting with the operating handle assembly 41. It should be particularly noted that the power source 13 can be a motor. The front end of the lower fuel tank 12 is provided with a heat - dissipation outlet hole. In the present application, the flow of the heat - dissipating air is driven by the rotation of the outer rotor in the motor serving as the power source 13 to drive the air to flow in a single direction, and in cooperation with the first deflector 121 integrally formed on the lower fuel tank 12 to guide the air, further ensuring the air to flow in a single direction.

[0058] Through the setting of the second fixed shaft 111 and the limitation of the quantity and position of the second fixed shaft 111, the position of the baffle 31 can be ensured to be replaced according to the required sawing form of the bamboo saw; through the setting of the power connection head 112, it is used to provide a connection port for the connecting wire 113, so that the power supply 6 can be connected to the power source 13 to provide power for the power source 13; through the setting of the filter screen filter 151, it is used to filter the lubricating oil entering the oil pump 15; it should be particularly noted that the connecting wire 113 can adopt a telescopic spiral wire, and the power supply 6 can adopt a mobile backpack power supply.

[0059] Refer to the appendix Figure 5 and Figure 8 As shown, in the present invention, the sawing assembly 2 includes a guide plate 21 installed on the bamboo cutting saw main body 1 and a saw chain 22 installed on the guide plate 21; wherein, the power source 13 can drive the saw chain 22 to move through the driving sprocket 16 to saw the sawn timber.

[0060] Refer to the appendix Figure 5 , Figure 9 — Figure 14 As shown, in the present invention, the detachable baffle assembly 3 includes a baffle 31, a quick-release structure 32 arranged on the baffle 31 and the second fixed shaft 111, and the baffle 31 is detachably installed on any second fixed shaft 111 through the quick-release structure 32 and rotates around the second fixed shaft 111.

[0061] Among them, the quick-release structure 32 includes a mounting hole group 322 arranged on the baffle 31, a fixed sleeve 323 installed in the mounting hole group 322, a ball 324 movably installed on the fixed sleeve 323, a rotary limit ring 325 and a snap ring 326 installed on the fixed sleeve 323, a limit groove 327 arranged on the second fixed shaft 111 corresponding to the ball 324, a sliding groove 328 arranged in the mounting hole group 322 corresponding to the ball 324, a torsion spring 329 with one end connected to the fixed sleeve 323 and the other end connected to the baffle 31, and a ball limit structure 320 installed on the baffle 31 for limiting the ball 324.

[0062] Through the provision of the mounting hole group 322, the present invention is used to provide a mounting position for the fixing sleeve 323, enabling the baffle 31 to be mounted on the second fixed shaft 111; through the provision of the ball 324, it is used to connect the fixing sleeve 323, the second fixed shaft 111 and the baffle 31, and enabling the baffle 31 to rotate around the fixing sleeve 323; through the provision of the rotation limiting ring 325 and the snap ring 326, the fixing sleeve 323 is fixedly installed in the mounting hole group 322 of the baffle 31; through the provision of the limiting groove 327, in cooperation with the ball 324, the second fixed shaft 111 can be connected to the fixing sleeve 323; through the provision of the sliding groove 328, it is used to connect the ball 324 to the fixing sleeve 323; through the provision of the torsion spring 329, it is used to provide a restoring force for the baffle 31.

[0063] Refer to the appendix Figure 10 — Figure 14 As shown, in the present invention, the mounting hole group 322 includes a first through hole 3221 and second through holes 3222 provided at both ends of the first through hole 3221; the fixing sleeve 323 is provided with a jack 3231, a movable hole 3232, a slot 3233 and a rotation limiting groove 3234. The jack 3231 is adapted to the second fixed shaft 111 and is communicated with the movable hole 3232. The ball 324 is located in the movable hole 3232. The slot 3233 and the rotation limiting groove 3234 are communicated with each other and are arranged in an L shape; the rotation limiting ring 325 is provided with a limiting block 3251 adapted to the rotation limiting groove 3234, and the limiting block 3251 enters the rotation limiting groove 3234 through the slot 3233; the snap ring 326 is provided with a fixed insert block 3261 adapted to the fixed slot 3233; the ball limiting structure 320 includes a cover plate 3201 mounted on the baffle 31, an eccentric rotating shaft 3202 mounted on the baffle 31, a rotating disk 3203 mounted on the eccentric rotating shaft 3202 and penetrating through the cover plate 3201, a contact plate 3204 provided on the rotating disk 3203, a contact mounting groove 3205 provided on the baffle 31, a contact spring 3206 with one end mounted in the contact mounting groove 3205, and a slider 3207 mounted on the other end of the contact spring 3206 and tightly attached to the outer wall of the fixing sleeve 323. The slider 3207 is in contact with the contact plate 3204.

[0064] The working principle of the quick-release structure 32 of the present invention is as follows: First, place the ball 324 in the movable hole 3232 of the fixed sleeve 323, then insert the fixed sleeve 323 into the mounting hole group 322, and then install the fixed sleeve 323 on the baffle 31 by fitting the rotary limit ring 325 with the limit block 3251. Subsequently, insert the fixed insertion block 3261 on the snap ring 326 into the fixed slot 3233, thereby installing the fixed sleeve 323 on the baffle 31. Then install the ball limit structure 320. Specifically, after installing the slider 3207 and the abutting spring 3206, insert the other end of the abutting spring 3206 into the abutting mounting groove 3205, then install the rotary disk 3203, and finally complete the installation of the ball limit structure 320 through the cover plate 3201. Finally, insert the second fixed shaft 111 into the insertion hole 3231. The second fixed shaft 111 pushes the ball 324 to move outward, pushing the slider 3207 to move until the second fixed shaft 111 reaches the specified position. The ball 324 enters the limit groove 327 through the abutting spring 3206, and the ball 324 can rotate in the sliding groove 328.

[0065] Refer to the attached Figure 5 As shown, in the present invention, the operating handle assembly mechanism 4 includes an operating handle assembly 41 rotatably mounted on the bamboo cutting saw main body 1, and a rotary switching structure 42 mounted on the operating handle assembly 41. Among them, the operating handle assembly 41 includes a first handle 43 and a second handle 44, a drive switch 45 mounted on the first handle 43, and the rotary switching structure 42 is provided on the first handle 43 and / or the second handle 44.

[0066] In the present invention, by setting the operating handle assembly 41 as the first handle 43 and the second handle 44, it is convenient to install the operating handle assembly 41 on the bamboo cutting saw main body 1. Through the setting of the rotary switching structure 42, it is used to fix the first handle 43 and the second handle 44 to the bamboo cutting saw main body 1 to prevent the operating handle assembly 41 from rotating during use. In this application, one of the first handle 43 and the second handle 44 is provided with the rotary switching structure 42, and of course, both can be provided with the rotary switching structure 42.

[0067] Refer to the attached Figure 3 — Figure 5 As shown, in the present invention, the first handle 43 includes a right handle 432 and a left handle 431 joined to the right handle 432. A second space is formed between the left handle 431 and the right handle 432. The drive switch 45 and the rotary switching structure 42 are installed in the second space. A deputy handle 433 is installed on the left handle 431.

[0068] In the present invention, through the setting of splicing the right handle 432 and the left handle 431, a space is formed between the right handle 432 and the left handle 431, providing an installation space for the drive switch 45; through the setting of the auxiliary handle 433, it is convenient for the operator to apply an external force.

[0069] Refer to the appendix Figure 5 As shown, in the present invention, the drive switch 45 includes a trigger 451 and a trigger control button 452. A power switch connected to the power supply 6 is installed on the first handle 43, and a trigger switch 453 corresponding to the trigger 451 is installed in the second space. It should be particularly noted that the trigger control button 452 abuts against one end of the trigger 451, that is, when the trigger control button 452 is not pressed, the trigger 451 cannot be pulled, thus ensuring the safety of the chainsaw; through the setting of the trigger switch 453, the trigger switch 453 abuts against the other end of the trigger 451. After the trigger is pulled, the trigger switch 453 is pressed to send a signal to the controller 14 for chainsaw pneumatic operation.

[0070] Refer to the appendix Figure 5 — Figure 7 As shown, in the present invention, the rotary switching structure 42 includes a handle locking block 423, a handle locking elastic member 424 sleeved on the handle locking block 423, and a handle locking switch 425 installed on the handle locking block 423; wherein, the handle locking block 423 includes a limiting portion 4231, a connecting portion 4232 provided on the limiting portion 4231, a mating portion 4233 provided on the side of the connecting portion 4232, a mating hole 4234 provided on the mating portion 4233, and a slot 4235 provided on the connecting portion 4232; the handle locking elastic member 424 is sleeved on the mating portion 4233, and one end of the handle locking elastic member 424 corresponds to the mating hole 4234, and the other end is connected to the first handle 43; the handle locking switch 425 is provided with a plug 4251 adapted to the slot 4235. It should be particularly noted that a plurality of card slots 421 are provided on the lower fuel tank 12 and the box body 11, the card slots 421 correspond to the handle locking block 423, and the card slots 421 are distributed at intervals around the rotary switching structure 42; specifically, in this application, a first card slot and a second card slot are provided, the included angle between the first card slot and the second card slot is 90°, and the first card slot is provided on the lower fuel tank 12, and the second card slot is formed by splicing the lower fuel tank 12 and the box body 11. Of course, a plurality of card slots 421 can be set according to user needs to meet the multi-angle cutting needs of customers.

[0071] Through the arrangement of multiple card slots 421, there are at least two mating positions for the handle locking block 423, and at least two fixed positions for the operating handle assembly mechanism 4, so that the usage form of the bamboo saw can be changed; through the arrangement of the limiting part 4231, it is used for clamping and mating with the card slot 421; through the arrangement of the connecting part 4232, it is movably connected with the rotating shaft in the first handle 43, so that the limiting part 4231 can rotate and cooperate with the first card slot or the second card slot; through the arrangement of the mating hole 4234, one end of the handle locking elastic part 424 is fixed; through the arrangement of the slot 4235 and the plug 4251, the handle locking switch 425 can drive the handle locking block 423 to rotate.

[0072] Refer to the appendix Figure 4 、 Figure 5 、 Figure 9 and Figure 15 As shown in the figures, in the present invention, a replacement cylinder 114 is sleeved on the second fixed shaft 111 of the baffle 31; a heat dissipation inlet hole 115 communicating with the first sealing area is provided on the box body 11, and an air filter 116 and an air filter cover 117 are installed on the heat dissipation inlet hole 115.

[0073] Through the arrangement of the air filter cover 117 and the air filter 116, the present invention is used for secondary filtering of the heat dissipation air, avoiding sawdust from entering the first sealing area, reducing the cleaning frequency of the operator, and improving work efficiency; it should be particularly noted that anti-chip plates 1171 are staggered on the inner wall of the air filter cover 117, which can effectively reduce the air flow rate, block large particle sawdust in the air, and reduce the filtering pressure of the air filter 116.

[0074] Refer to the appendix Figure 4 and Figure 9 As shown in the figures, in the present invention, the chip removal mechanism 5 includes a side cover plate 51 arranged on the upper side of the bamboo saw main body 1, a first chip removal port 52 and a second chip removal port 53 arranged on the side cover plate 51, and a chip prevention cover 54 installed on the second chip removal port 53, and the chip removal directions of the first chip removal port 52 and the second chip removal port 53 are perpendicular to each other, so as to ensure effective chip removal in both forms of the bamboo saw, that is, the sawdust is mainly discharged from the chip removal port by gravity. Therefore, two chip removal ports in different directions need to be opened to ensure that in each form, there is a chip removal port facing the ground.

[0075] Refer to the appendix Figure 8As shown, in the present invention, the traction and reset mechanism 7 includes a fixed pin shaft 71 installed on the baffle 31, a traction connection block 72 installed on the bamboo cutting saw main body 1, and a reset elastic member 73 with one end installed on the traction connection block 72 and the other end installed on the first fixed shaft 110. Among them, the traction connection block 72 is provided with a chute adapted to the fixed pin shaft 71, and the chute includes a traction groove 721, a transition groove 722 communicating with the traction groove 721, and a limit groove 723 provided at one end of the transition groove 722 away from the traction groove 721.

[0076] In the present invention, through the setting of the fixed pin shaft 71, it is used to connect the baffle 31 and the traction connection block 72; through the setting of the reset elastic member 73, it is used to provide traction and reset elastic force to ensure that the baffle 31 is in close contact with the sawn timber, so that the sawn timber is in close contact with the saw chain 22, and the reset elastic member 73 can be a spring; through the setting of the traction groove 721, the movement track of the baffle 31 is limited; through the setting of the transition groove 722, the traction groove 721 and the limit groove 723 are separated, so that the fixed pin shaft 71 cannot enter the limit groove 723 during use, and the fixed pin shaft 71 needs to be intervened by the operator to cooperate with the limit groove 723; through the setting of the limit groove 723, it is used to rotate the baffle 31, and when no operation is required, the baffle 31 is fixedly stored.

[0077] Refer to the appendix Figure 1 — Figure 15 As shown, the present invention also provides a method for using a dual - form bamboo cutting saw, and the specific steps are as follows: The first step is to switch the baffle 31 and the operation handle assembly mechanism 4 to the logging mode; specifically, install the baffle 31 on the side of the saw chain 22 facing the bamboo cutting saw main body 1, and snap the handle locking block 423 in the operation handle assembly mechanism 4 into one of the card slots 421, that is, the first card slot. The second step is to press the trigger control button 452, and after pressing the trigger control button 452, pull the trigger 451. The trigger 451 presses the trigger switch 453, and the trigger switch 453 sends a signal to the controller 14. The controller 14 drives the power source 13 to work, and the power source 13 drives the saw chain 22 to move through the sprocket 16, so that the saw chain 22 can saw the sawn timber.

[0078] Step 3: Move the activated bamboo cutting saw closer to the bamboo material so that the bamboo material is located between the saw chain 22 and the baffle 31. Guided by the baffle 31, the bamboo material moves towards the scissor connection point of the baffle 31 and the saw chain 22, that is, towards the main body 1 of the bamboo cutting saw. When the bamboo material just comes into contact with the saw chain 22, check for a moment whether there is a rebound situation. At this time, the bamboo material is blocked by the baffle 31 and remains in contact with the saw chain 22, enabling the saw chain 22 to cut the bamboo material. When the baffle 31 is subjected to the rebound impact force, the baffle 31 buffers and absorbs the impact force through the torsion spring 329 and the reset elastic member 73 in the traction reset mechanism 7 to ensure the close contact between the baffle 31 and the bamboo material. After the saw chain 22 comes into contact with the bamboo material, the cutting force of the saw chain 22 on the bamboo material is directed towards the operator, and the direction of the reaction force of the cutting force is away from the operator. At the same time, the baffle 31 exerts a force on the bamboo material to push it towards the saw chain 22. Therefore, the reaction force of the cutting force can be used as the feeding force, enabling the operator to reduce the application of the feeding force and lower the labor intensity of the operator while ensuring the cutting efficiency. During the cutting process, according to the size of the bamboo material, the angle between the guide plate 21 and the baffle is 10° to 150°; Step 4: Release the trigger 451. At this time, the trigger control button 452 resets and abuts against the trigger 451 to prevent accidental touch of the trigger 451. At this time, the operator rotates the handle locking block 423 through the handle locking switch 425 in the handle assembly mechanism 4, separating the handle locking block 423 from the first card slot. At this time, the operator rotates the handle assembly mechanism 4 to make the handle locking block 423 enter the second card slot to complete the switching of the handle assembly mechanism 4. Subsequently, the baffle 31 is disassembled through the quick-release structure 32 and installed on the second fixed shaft 111 at the other end of the main body 1 of the bamboo cutting saw. Briefly speaking, first cancel the abutment of the ball limiting structure 320 on the slider 3207 and make the ball 324 contact the slider 3207, and then pull out the baffle 31. It should be particularly noted that the order between the position replacement of the baffle 31 and the rotation of the handle assembly mechanism 4 can be changed; Step 5: Start the equipment again and prune and cut the bamboo material through the saw chain; In Step 3, the angle between the guide plate 21 and the baffle can be 20° to 90°.

[0079] Embodiment 2 Refer to the appendix Figure 16 and Figure 17 As shown, the difference between this embodiment and the above embodiment is that in this embodiment, an upper cover 9 is installed on the upper fuel tank 17, and a second deflector 171 is installed on the upper fuel tank 17 through a bolt connection member. The second deflector 171 is located between the upper fuel tank 17 and the upper cover 9 and is used to guide the air driven by the outer rotor of the power source 13.

[0080] Embodiment 3 Refer to the appendixFigure 17 As shown in the figure, the difference between this embodiment and the above embodiment is that in this embodiment, a chip guide plate 511 is installed on the side cover plate 51. The chip guide plate 511 is used to guide the sawdust so that the sawdust enters the first chip discharge port 52 or the second chip discharge port 53, avoiding the random movement of the sawdust on the side cover plate 51 due to the airflow of the saw chain 22, improving the chip discharge effect, improving the heat dissipation effect of the saw chain 22, and prolonging the service life of the saw chain 22.

[0081] Embodiment 4 Refer to the appendix Figure 18 — Figure 21 As shown in the figure, the difference between this embodiment and the above embodiment is that in this embodiment, the operation handle assembly 41 includes a first handle 43 movably connected to the bamboo cutting saw main body 1, a drive switch 45 installed on the first handle 43, and the rotation switching structure 42 is installed on the first handle 43.

[0082] The operation handle assembly 41 of this embodiment only has the first handle 43, and the first handle 43 is connected to the bamboo cutting saw main body 1 through the rotation switching structure 42; the use of the second handle 44 is reduced, and the use cost is lowered. The above embodiments are illustrative of the present application, not restrictive of the present application. Any simple transformation of the present application belongs to the protection scope of the present application.

Claims

1. A dual-mode bamboo cutting saw, characterized in that, It includes a bamboo cutting saw main body (1), a sawing component (2), an operating handle component mechanism (4), and a chip removal mechanism (5); The sawing component (2) is installed on the bamboo cutting saw main body (1); The operating handle component mechanism (4) includes an operating handle component (41) rotatably installed on the bamboo cutting saw main body (1), and a rotation switching structure (42) installed on the operating handle component (41). The operating handle component (41) can be rotated through the rotation switching structure (42); The chip removal mechanism (5) is installed on the bamboo cutting saw main body (1) and is used to discharge the chips generated during the cutting process; The operating handle component mechanism (4) and the sawing component (2) have a logging mode and a bucking mode; The logging mode is used for sawing the whole bamboo. When holding the bamboo cutting saw through the operating handle component mechanism (4), the sawing surface of the sawing component (2) is parallel to the horizontal plane; The bucking mode is used for pruning, punching bamboo joints, and cutting bamboo materials of the sawn whole bamboo. When holding the bamboo cutting saw in the same posture through the operating handle component mechanism (4), the sawing surface of the sawing component (2) forms an angle with the horizontal plane.

2. The dual-mode bamboo cutting saw according to claim 1, characterized in that, The sawing component (2) includes a guide plate (21) installed on the bamboo cutting saw main body (1) and a saw chain (22) installed on the guide plate (21); The bamboo cutting saw main body (1) includes a box body (11), a fuel tank installed on the box body (11). A first space is formed between the fuel tank and the box body (11). A power source (13) connected to the power supply (6) is provided in the first space. The power source (13) is connected to the saw chain (22) and can drive the saw chain (22) to move for sawing the sawn timber; A detachable baffle component (3) is pivotally installed on the box body (11), and the detachable baffle component (3) can rotate around the pivot center; A traction reset mechanism (7) connected to the detachable baffle component (3) is installed on the box body (11), and the traction reset mechanism (7) is used to provide a reset force for the detachable baffle component (3).

3. The double-morphology bamboo-cutting saw according to claim 2, wherein, The bamboo cutting saw main body (1) further includes a controller (14) located in the first enclosed space, an oil pump (15) and a sprocket (16) installed on the output shaft of the power source (13); The sprocket (16) meshes with the saw chain (22); a filter screen filter (151) is provided on the inlet pipe of the oil pump (15). A third space is provided in the fuel tank, and the third space is communicated with the inlet pipe of the oil pump (15).

4. The double-morphology bamboo-cutting saw according to claim 2, wherein, A first fixed shaft (110) and a second fixed shaft (111) are provided on the box body (11). The number of the second fixed shafts (111) is not less than two and are respectively located on both sides of the bamboo cutting saw main body (1); A power supply connector (112) is provided on the box body (11), and a connecting wire (113) is installed on the power supply connector (112); At the front end, or / and, the rear end of the box body (11) and the oil box body, a circular ring groove, or / and, a cylindrical convex block for movably connecting with the operating handle component (41) is formed by splicing; The detachable baffle assembly (3) includes a baffle (31) and a quick-release structure (32) provided on the baffle (31) and the second fixed shaft (111). The baffle (31) is detachably mounted on any second fixed shaft (111) through the quick-release structure (32) and rotates around the second fixed shaft (111).

5. The dual-mode bamboo cutting saw according to claim 4, characterized in that, The detachable baffle assembly (3) is detachably mounted on any second fixed shaft (111), and the detachable baffle assembly (3) can rotate around the second fixed shaft (111); The traction and reset mechanism (7) includes a fixed pin shaft (71), a traction connection block (72), and a reset elastic member (73); The fixed pin shaft (71) is mounted on the baffle (31); The traction connection block (72) is movably mounted on the bamboo cutting saw main body (1). A chute is provided on the traction connection block (72). The chute includes a traction groove (721), a transition groove (722) communicating with the traction groove (721), and a limit groove (723) provided at one end of the transition groove (722) away from the traction groove (721). The fixed pin shaft (71) moves in the chute; One end of the reset elastic member (73) is fixed on the traction connection block (72), and the other end is fixedly mounted on the first fixed shaft (110).

6. The dual-mode bamboo cutting saw according to claim 1, characterized in that, The operation handle assembly (41) includes a first handle (43) movably mounted on the bamboo cutting saw main body (1) and a drive switch (45) mounted on the first handle (43). The first handle (43) is provided with the rotation switching structure (42).

7. The dual-mode bamboo cutting saw according to claim 6, wherein A second space is provided on the first handle (43), and the drive switch (45) and the rotation switching structure (42) are mounted in the second space; The drive switch (45) includes a trigger (451) and a trigger control button (452). A trigger switch (453) corresponding to the trigger (451) is mounted in the second space; The operation handle assembly (41) further includes a second handle (44) mounted on the first handle (43) and movably connected to the bamboo cutting saw main body (1). The second handle (44) may also be provided with the rotation switching structure (42).

8. The dual-mode bamboo cutting saw according to claim 6, wherein The rotation switching structure (42) includes a handle locking block (423), a handle locking elastic member (424), and a handle locking switch (425); The handle locking block (423) includes a limit portion (4231), a connection portion (4232) provided on the limit portion (4231), a cooperation portion (4233) provided on the side surface of the connection portion (4232), a cooperation hole (4234) provided on the cooperation portion (4233), and a slot (4235) provided on the connection portion (4232). The first handle (43), and / or, the second handle (44) is movably connected to the connection portion (4232); One end of the handle locking elastic member (424) is connected to the handle locking block (423), and the other end is connected to the first handle (43); The handle locking switch (425) is provided with a plug (4251) adapted to the slot (4235); A plurality of card slots (421) are provided on the lower fuel tank and the box body (11), the card slots (421) correspond to the handle locking blocks (423), and the card slots (421) are distributed at intervals around the rotation switching structure (42).

9. The dual-mode bamboo cutting saw according to claim 2, characterized in that, A flow guide cover is provided on the side wall of the fuel tank.

10. A method for using a dual-mode bamboo cutting saw according to any one of claims 1 to 9, characterized in that, It includes the following steps: First step, switch the operating handle assembly mechanism (4) to the felling mode; Second step, start the bamboo saw, move the bamboo saw close to the bamboo to be sawn, and place the bamboo between the sawing assembly (2) and the baffle (31); Third step, the operator saws the bamboo through the sawing assembly (2); Fourth step, stop the bamboo saw, and switch the operating handle assembly mechanism (4) to the bucking mode; Fifth step, start the bamboo saw again, and trim and cut the bamboo sawn in the third step.

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