Double-mode bamboo saw

Abstract

This utility model discloses a dual-mode bamboo saw, including a bamboo 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 saw to have a harvesting mode and a processing mode. The harvesting mode is used to cut whole bamboo, and the processing mode is used to prune bamboo branches, open bamboo nodes, and slice bamboo. Operators do not need to carry multiple tools into the bamboo forest, reducing the complexity of operations and the burden of relocation.

Description

Technical Field

[0001] This utility model relates to the field of sawing tools, specifically to a dual-form bamboo felling method. Background Technology

[0002] China is one of the world's richest countries in bamboo resources, possessing unique advantages. Bamboo's short growth cycle makes it an ideal material choice for sustainable development.

[0003] Currently, bamboo is typically felled using chainsaws. Due to the strength and toughness of bamboo, operators need to use both hands to ensure sufficient feed force and prevent slippage during sawing. After sawing the whole bamboo, pruning is required. However, existing pruning tools usually rely on machetes, requiring bamboo cutters to carry multiple tools into the bamboo forest, increasing the complexity of the operation and the burden of relocation.

[0004] Therefore, in order to facilitate the felling and pruning of bamboo, there is a need to provide a bamboo saw that can fell and prune bamboo. Utility Model Content

[0005] The purpose of this invention is to propose a dual-mode bamboo saw to solve the problems in the prior art where operators need to hold the bamboo saw with both hands and carry multiple tools into the bamboo forest, increasing the complexity of the operation and the burden of relocation.

[0006] To achieve the above objectives, this utility model proposes a dual-mode bamboo saw, including a bamboo saw body, a sawing component, an operating handle assembly, and a chip removal mechanism. The sawing component is mounted on the bamboo saw body. The operating handle assembly includes an operating handle rotatably mounted on the bamboo saw body and a rotation switching structure mounted on the operating handle, allowing the operating handle to rotate. The chip removal mechanism is mounted on the bamboo saw body and is used to remove chips generated during the cutting process. The operating handle assembly and the sawing component have a harvesting mode and a timber processing mode. In the harvesting mode, the bamboo saw is used to cut whole bamboo. When the bamboo saw is picked up through the operating handle assembly, the sawing surface of the sawing component is parallel to the horizontal plane. In the timber processing mode, the bamboo saw is used to prune, remove nodes, and cut into segments after the bamboo has been cut. When the bamboo saw is picked up through the operating handle assembly in the same posture, 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 saw body and a saw chain mounted on the guide plate; the bamboo saw body includes a housing and an oil tank mounted on the housing, with a first space formed between the oil tank and the housing, and a power source connected to a power source is provided in the first space, which is connected to the saw chain and can drive the saw chain to move and saw the timber.

[0008] Optionally, a detachable baffle assembly is pivotally mounted on the housing, which can rotate about the pivot center; a traction reset mechanism connected to the detachable baffle assembly is mounted on the housing, which is used to provide a reset force for the detachable baffle assembly; the detachable baffle assembly also exists in both logging and timber processing modes.

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

[0010] When the detachable baffle assembly is in the material processing mode, the detachable baffle assembly is located on the side of the saw chain away from the main body of the bamboo cutting saw. At this time, the guide plate can be moved up and down by operating the handle assembly, so that the saw chain can trim the whole bamboo after sawing.

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

[0012] Optionally, the sprocket meshes with the saw chain; the oil pump inlet pipe is equipped with a filter screen, and the oil tank has a third space that is connected to the oil pump inlet pipe.

[0013] Optionally, the housing is provided with a first fixed shaft and a second fixed shaft, the number of which is not less than two, and they are respectively located on both sides of the bamboo saw body; the housing is provided with a power connector, and a connecting wire is installed on the power connector.

[0014] Optionally, the front end and / or rear end of the housing and the oil tank are spliced ​​to form an annular groove and / or a cylindrical protrusion for movably connecting with the operating handle assembly; the detachable baffle assembly includes a baffle, a quick-release structure disposed on the baffle and a second fixed shaft, the baffle being detachably hooked onto either of the second fixed shafts via the quick-release structure and rotating about the second fixed shafts.

[0015] Optionally, the detachable baffle assembly can be detachably mounted on either of the second fixed shafts, and the detachable baffle assembly can rotate about the second fixed shaft; a replacement cylinder is fitted on another second fixed shaft that is not fitted with a baffle.

[0016] Optionally, the housing is provided with a heat dissipation inlet that communicates with the first sealing area, and an air filter and an air filter cover are installed on the heat dissipation inlet; the traction reset mechanism includes a fixed pin, a traction connecting block and a reset elastic element; the fixed pin is installed on the baffle.

[0017] Optionally, the traction connecting block is movably mounted on the bamboo saw body. The traction connecting block is provided with a sliding groove, which includes a traction groove, a transition groove communicating with the traction groove, and a limiting groove provided at the end of the transition groove away from the traction groove. The fixing pin moves within the sliding groove. One end of the reset elastic element is fixed to the traction connecting block, and the other end is fixedly mounted on the first fixed shaft.

[0018] Optionally, the operating handle assembly includes a first handle movably mounted on the bamboo saw body, a drive switch mounted on the first handle, and the first handle having the aforementioned rotation switching structure.

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

[0020] Optionally, the first handlebar includes a right handlebar and a left handlebar that is joined together with the right handlebar, and the second space is formed by joining the left handlebar and the right handlebar.

[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 operating handle assembly also includes a second handle mounted on the first handle and movably connected to the bamboo saw body, the second handle having a rotary switching mechanism.

[0023] Optionally, the rotary switching structure includes a handle locking block, a handle locking elastic element, and a handle locking switch; the handle locking block includes a limiting part, a connecting part disposed on the limiting part, a mating part disposed on the side of the connecting part, a mating hole disposed on the mating part, a slot disposed on the connecting part, a first handle, and / or, a second handle movably connected to the connecting part.

[0024] Optionally, one end of the handle locking elastic element 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 that matches the slot; the lower oil tank and the tank body in the oil tank are provided with multiple slots, which correspond to the handle locking block, and the slots are distributed at intervals around the rotation switching structure.

[0025] Optionally, the handle locking spring is fitted onto the mating part.

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

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

[0028] The method of using this novel dual-mode bamboo saw is as follows:

[0029] The first step is to switch the operating handle assembly mechanism and the detachable baffle assembly to the harvesting mode;

[0030] The second step is to start the bamboo saw, so that the sawing component moves back and forth to saw the bamboo.

[0031] The third step is to bring the bamboo saw close to the bamboo to be cut, so that the bamboo is between the sawing components and the baffle.

[0032] Fourth step: Stop the bamboo saw and switch the operating handle assembly to the lumber-making mode;

[0033] The fifth step is to restart the bamboo saw and prune and cut the bamboo that was cut in the third step.

[0034] Compared with the prior art, this utility model provides a dual-form bamboo saw with the following advantages:

[0035] This dual-mode bamboo saw, through the mechanism of the operating handle assembly, enables the bamboo saw to have a harvesting mode and a timber processing mode. The harvesting mode is used to cut whole bamboo, and the timber processing mode is used for bamboo pruning, removing bamboo nodes and slicing bamboo. Operators do not need to carry multiple tools into the bamboo forest, reducing the complexity of operations and the burden of relocation.

[0036] In addition, the present invention, through the setting of a detachable traction mechanism, together with the sawing component, enables the bamboo saw to achieve a scissor-like feeding action during the bamboo felling process. With the traction and reset mechanism, the friction generated when the saw chain cuts the bamboo can be used to move the saw chain forward, thereby moving the bamboo towards the bamboo saw body and allowing the saw chain to cut into the bamboo, thus significantly improving bamboo felling efficiency and reducing manpower consumption. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0038] Figure 2 This is a schematic diagram of the structure of the bamboo saw of this utility model.

[0039] Figure 3 This is a structural schematic diagram of another working form of the present invention: a bamboo-cutting saw.

[0040] Figure 4This is a disassembly diagram of the bamboo-cutting saw of this utility model.

[0041] Figure 5 This is a cross-sectional view of the bamboo-cutting saw of this utility model.

[0042] Figure 6 This is a schematic diagram of the rotary switching mechanism of this utility model.

[0043] Figure 7 This is a structural schematic diagram of the housing and lower oil tank of this utility model.

[0044] Figure 8 This is a schematic diagram of the traction reset mechanism of this utility model.

[0045] Figure 9 This is an installation diagram of the detachable baffle assembly of this utility model.

[0046] Figure 10 This is a disassembly diagram of the detachable baffle assembly of this utility model.

[0047] Figure 11 This is a utility model Figure 10 A magnified view of a portion of point A in the middle.

[0048] Figure 12 This is a disassembly diagram of the quick-release structure of this utility model.

[0049] Figure 13 This is a schematic diagram of the cooperation between the second fixed shaft and the ball bearing of this utility model.

[0050] Figure 14 This is a schematic diagram of the ball bearing limiting structure of this utility model.

[0051] Figure 15 This is a schematic diagram of the structure of the air filter cover and oil tank of this utility model.

[0052] Figure 16 This is a disassembly diagram of the overall structure in Embodiment 2 of this utility model.

[0053] Figure 17 This is a schematic diagram of the installation of the flow guide in Embodiment 2 of this utility model.

[0054] Figure 18 This is a schematic diagram of the chip guide plate installation in Embodiment 3 of this utility model.

[0055] Figure 19 This is a schematic diagram showing the connection between the operating handle assembly and the front end of the bamboo saw body in Embodiment 4 of this utility model.

[0056] Figure 20 This is a utility model Figure 19 A schematic diagram of the control handle assembly.

[0057] Figure 21 This is a schematic diagram showing the connection between the operating handle assembly and the rear end of the bamboo saw body in Embodiment 4 of this utility model.

[0058] Figure 22 This is a utility model Figure 21 A schematic diagram of the control handle assembly.

[0059] The diagram shows: 1. Bamboo saw body; 11. Box body; 110. First fixed shaft; 111. Second fixed shaft; 112. Power connector; 113. Connecting cable; 114. Replacement cylinder; 115. Heat dissipation inlet; 116. Air filter; 117. Air filter cover; 1171. Chip baffle; 12. Lower oil tank; 121. First air guide; 13. Power source; 14. Controller; 15. Oil pump; 151. Filter screen; 16. Sprocket; 17. Upper oil tank; 171. Second air guide; 18. Oil tank cover assembly; 19. Hook; 2. Sawing Components; 21. Guide plate; 22. Saw chain; 3. Detachable baffle assembly; 31. Baffle; 32. Quick release structure; 320. Ball bearing limiting structure; 3201. Cover plate; 3202. Eccentric rotating shaft; 3203. Rotary disk; 3204. Abutment plate; 3205. Abutment mounting groove; 3206. Abutment spring; 3207. Slider; 322. Mounting hole assembly; 3221. First through hole; 3222. Second through hole; 323. Fixing sleeve; 3231. Insertion hole; 3232. Movable hole; 3233. Slot; 3234. Rotation limiting groove; 324 325. Ball bearing; 325. Rotary limiting ring; 3251. Limiting block; 326. Snap ring; 3261. Fixing insert; 327. Limiting groove; 328. Slide groove; 329. Torsion spring; 4. Operating handle assembly mechanism; 41. Operating handle assembly; 42. Rotary switching structure; 421. Snap groove; 423. Handle locking block; 4231. Limiting part; 4232. Connecting part; 4233. Mating part; 4234. Mating hole; 4235. Slot; 424. Handle locking elastic element; 425. Handle locking switch; 4251. Insert; 43. First hand 431. Left handle; 432. Right handle; 433. Auxiliary 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 guide plate; 52. First chip removal port; 53. Second chip removal port; 54. Chip guard cover; 6. Power supply; 7. Traction reset mechanism; 71. Fixed pin; 72. Traction connecting block; 721. Traction groove; 722. Transition groove; 723. Limiting groove; 73. Reset elastic element; 8. Rubber pad; 9. Top cover. Detailed Implementation

[0060] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, illustrates the present invention. Numerous specific details are set forth in the description below to provide a thorough understanding of the invention. However, the present invention 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 spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0061] The present application discloses a dual-form bamboo saw and its utility model, which can be applied to occasions where frequent changes in posture are required for sawing timber, and can also be used in other similar application scenarios. The following is a detailed description of a dual-form bamboo saw.

[0062] See appendix Figure 1 — Figure 15 The diagram shows a preferred embodiment of a dual-mode bamboo saw according to this application. This dual-mode bamboo saw includes a bamboo saw body 1, a sawing assembly 2 mounted on the bamboo saw body, a detachable baffle assembly 3 mounted on the bamboo saw body 1, an operating handle assembly 4 mounted on the bamboo saw body 1, a chip removal mechanism 5 mounted on the bamboo saw body 1, a power supply 6 for providing electrical energy, a traction reset mechanism 7 mounted on the bamboo saw body 1 and the detachable baffle assembly 3, and a rubber pad 8 mounted on the bottom of the bamboo saw body 1.

[0063] See appendix Figure 1 — Figure 15As shown, in this utility model, the bamboo saw body 1 includes a housing 11, an oil tank mounted on the housing 11, the oil tank including a lower oil tank 12, an upper oil tank 17 mounted on the lower oil tank 12, and an oil tank cover assembly 18 mounted on the upper oil tank 17. A first space is formed between the housing 11 and the lower oil tank 12. A power source 13 is provided in the first space. A first fixed shaft 110 and a second fixed shaft 111 are provided on the housing 11. There are at least two second fixed shafts 111, which are located on both sides of the bamboo saw body 1. A controller 14 is located in the first enclosed space and is mounted on the power source. The output shaft of the 13 includes an oil pump 15 and a drive sprocket 16, which mesh with the saw chain 22. The oil pump 15 has an oil inlet pipe equipped with a filter screen 151. A third space is formed between the lower oil tank 12 and the upper oil tank 17, and this third space is connected to the oil inlet pipe of the oil pump 15. The housing 11 has a power connector 112 with a connecting wire 113 connected to the power supply 6. The front and rear ends of the housing 11 and the lower oil tank 12 are respectively joined to form an annular groove and a cylindrical protrusion for movable connection with the operating handle assembly 41. It should be noted that the power source 13 can be a motor. The front end of the lower oil tank 12 has a heat dissipation vent. In this application, the airflow for heat dissipation is achieved by the rotation of the outer rotor of the motor (power source 13) driving the air to flow in one direction. This, combined with the first guide shroud 121 integrally formed with the lower oil tank 12, guides the air, further ensuring unidirectional airflow.

[0064] This invention, through the setting of the second fixed shaft 111 and the limitation of the number and position of the second fixed shaft 111, ensures that the position of the baffle 31 can be changed according to the required cutting shape of the bamboo saw; through the setting of the power connector 112, it is used to provide a connection port for the connecting cable 113, so that the power supply 6 can be connected to the power source 13 to provide power to the power source 13; through the setting of the filter screen 151, it is used to filter the lubricating oil entering the oil pump 15; it should be noted that the connecting cable 113 can be a telescopic spiral cable, and the power supply 6 can be a portable backpack power supply.

[0065] See appendix Figure 5 and Figure 8 As shown, in this utility model, the sawing assembly 2 includes a guide plate 21 installed on the bamboo saw 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 drive sprocket 16 to saw the saw material.

[0066] See appendix Figure 5 , Figure 9 — Figure 14As shown, in this utility model, the detachable baffle assembly 3 includes a baffle 31 and a quick-release structure 32 disposed on the baffle 31 and the second fixed shaft 111. The baffle 31 can be detachably installed on any of the second fixed shafts 111 and rotated around the second fixed shaft 111 via the quick-release structure 32.

[0067] The quick-release structure 32 includes a mounting hole group 322 on the baffle 31, a fixing sleeve 323 installed in the mounting hole group 322, a ball bearing 324 movably installed on the fixing sleeve 323, a rotation limiting ring 325 and a retaining ring 326 installed on the fixing sleeve 323, a limiting groove 327 on the second fixed shaft 111 corresponding to the ball bearing 324, a sliding groove 328 in the mounting hole group 322 corresponding to the ball bearing 324, a torsion spring 329 connected at one end to the fixing sleeve 323 and at the other end to the baffle 31, and a ball limiting structure 320 installed on the baffle 31 for limiting the ball bearing 324.

[0068] This invention provides an installation position for the fixing sleeve 323 through the mounting hole group 322, allowing the baffle 31 to be installed on the second fixing shaft 111; the ball bearing 324 connects the fixing sleeve 323, the second fixing shaft 111, and the baffle 31, allowing the baffle 31 to rotate around the fixing sleeve 323; the rotation limiting ring 325 and the retaining ring 326 fix the fixing sleeve 323 in the mounting hole group 322 of the baffle 31; the limiting groove 327, in conjunction with the ball bearing 324, connects the second fixing shaft 111 to the fixing sleeve 323; the sliding groove 328 connects the ball bearing 324 to the fixing sleeve 323; and the torsion spring 329 provides the restoring force for the baffle 31.

[0069] See appendix Figure 10 — Figure 14As shown, in this utility model, the mounting hole assembly 322 includes a first through hole 3221 and second through holes 3222 disposed at both ends of the first through hole 3221; the fixing sleeve 323 is provided with an insertion hole 3231, a movable hole 3232, a slot 3233, and a rotation limiting groove 3234. The insertion hole 3231 is adapted to the second fixing shaft 111 and communicates with the movable hole 3232. The ball bearing 324 is located in the movable hole 3232. The slot 3233 and the rotation limiting groove 3234 are interconnected and arranged in an L-shape; the rotation limiting ring 325 is provided with a limiting block 3251 adapted to the rotation limiting groove 3234. The limiting block 3251 enters the rotation limiting groove 3234 through the slot 3233. In the middle; the retaining ring 326 is provided with a fixing block 3261 adapted to the fixing 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 passing through the cover plate 3201, an abutment plate 3204 provided on the rotating disk 3203, an abutment mounting groove 3205 provided on the baffle 31, an abutment spring 3206 with one end installed in the abutment mounting groove 3205, and a slider 3207 mounted on the other end of the abutment spring 3206 and in close contact with the outer wall of the fixing sleeve 323, the slider 3207 being in contact with the abutment plate 3204.

[0070] The working principle of the quick-release structure 32 of this utility model is as follows: First, the ball bearing 324 is placed in the movable hole 3232 of the fixed sleeve 323. Then, the fixed sleeve 323 is inserted into the mounting hole group 322. Subsequently, the rotating limiting ring 325 is engaged with the rotating limiting ring 325 through the limiting block 3251, and the fixed sleeve 323 is installed on the baffle 31. Then, the fixing insert 3261 on the retaining ring 326 is inserted into the fixing slot 3233, thereby installing the fixed sleeve 323 on the baffle 31. Finally, the ball bearing limiting structure 320 is installed, specifically, the slider 3207 is installed. After installing the abutment spring 3206, the other end of the abutment spring 3206 is inserted into the abutment mounting groove 3205, and then the rotating disk 3203 is installed. Finally, the ball limiting structure 320 is installed through the cover plate 3201. Finally, the second fixed shaft 111 is inserted into the insertion hole 3231. The second fixed shaft 111 pushes the ball 324 to move outward and pushes the slider 3207 to move until the second fixed shaft 111 reaches the designated position. The ball 324 enters the limiting groove 327 through the abutment spring 3206, and the ball 324 can rotate in the slide groove 328.

[0071] See appendix Figure 5As shown, in this utility model, the operating handle assembly mechanism 4 includes an operating handle assembly 41 rotatably mounted on the bamboo saw body 1, and a rotation switching structure 42 mounted on the operating handle assembly 41; wherein, 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 first handle 43, and / or the second handle 44 are provided with the rotation switching structure 42.

[0072] This utility model simplifies the installation of the operating handle assembly 41 on the bamboo saw body 1 by setting the operating handle assembly 41 as a first handle 43 and a second handle 44. The rotation switching structure 42 is used to fix the first handle 43 and the second handle 44 to the bamboo saw 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 rotation switching structure 42, but of course, both can also be provided with the rotation switching structure 42.

[0073] See appendix Figure 3 — Figure 5 As shown, in this utility model, the first handle 43 includes a right handle 432 and a left handle 431 that is attached 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. An auxiliary handle 433 is installed on the left handle 431.

[0074] The present invention uses the joint design of the right handle 432 and the left handle 431 to form a space, providing installation space for the drive switch 45; the auxiliary handle 433 makes it easier for the operator to apply external force.

[0075] See appendix Figure 5 As shown, in this 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 noted that the trigger control button 452 abuts against one end of the trigger 451, that is, the trigger 451 cannot be pulled if the trigger control button 452 is not pressed, thereby 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, pressing the trigger switch 453 sends a signal to the controller 14 to pneumatically operate the chainsaw.

[0076] References Figure 5 — Figure 7As shown, in this utility model, the rotary switching structure 42 includes a handle locking block 423, a handle locking elastic member 424 fitted on the handle locking block 423, and a handle locking switch 425 installed on the handle locking block 423. The handle locking block 423 includes a limiting part 4231, a connecting part 4232 on the limiting part 4231, a mating part 4233 on the side of the connecting part 4232, a mating hole 4234 on the mating part 4233, and a slot 4235 on the connecting part 4232. The handle locking elastic member 424 is fitted on the mating part 4233, with one end corresponding to the mating hole 4234 and the other end connected to the first handle 43. The handle locking switch 425 has an insertion block 4251 adapted to the slot 4235. It should be noted that the lower oil tank 12 and the housing 11 are provided with multiple slots 421, which correspond to the handle locking block 423, and the slots 421 are distributed at intervals around the rotation switching structure 42. Specifically, this application provides a first slot and a second slot, wherein the included angle between the first slot and the second slot is 90°, and the first slot is set on the lower oil tank 12, and the second slot is formed by splicing the lower oil tank 12 and the housing 11. Of course, multiple slots 421 can be set according to user needs to meet the customer's multi-angle cutting needs.

[0077] This utility model, through the arrangement of multiple slots 421, ensures that the handle locking block 423 has at least two mating positions, and that the operating handle assembly mechanism 4 has at least two fixed positions, thereby allowing for changes in the usage form of the bamboo saw; the limiting part 4231 is used to engage with the slots 421; the connecting part 4232 is movably connected to the rotating shaft inside the first handle 43, allowing the limiting part 4231 to rotate and engage with the first or second slot; the mating hole 4234 is used to fix one end of the handle locking elastic member 424; and the slot 4235 and the insert 4251 allow the handle locking switch 425 to drive the handle locking block 423 to rotate.

[0078] See appendix Figure 4 , Figure 5 , Figure 9 and Figure 15 As shown, in this utility model, a replacement cylinder 114 is fitted on the second fixed shaft 111 of the baffle 31; the housing 11 is provided with a heat dissipation inlet 115 that communicates with the first sealing area, and an air filter 116 and an air filter cover 117 are installed on the heat dissipation inlet 115.

[0079] This utility model uses the air filter cover 117 and air filter 116 to perform secondary filtration of the heat dissipation air, preventing sawdust from entering the first sealed area, reducing the frequency of cleaning by operators, and improving work efficiency. It should be noted that the inner wall of the air filter cover 117 is provided with staggered chip blocking plates 1171, which can effectively reduce the airflow velocity, block large particles of sawdust in the air, and reduce the filtration pressure of the air filter 116.

[0080] See appendix Figure 4 and Figure 9 As shown, in this utility model, the chip removal mechanism 5 includes a side cover plate 51 disposed on the side of the bamboo saw body 1, a first chip removal port 52 and a second chip removal port 53 disposed on the side cover plate 51, and a chip-proof cover 54 installed on the second chip removal port 53. The chip removal directions of the first chip removal port 52 and the second chip removal port 53 are perpendicular to each other, thereby ensuring that the bamboo saw can effectively remove chips in both modes. That is, the sawdust is mainly discharged from the chip removal port by gravity. Therefore, it is necessary to open two chip removal ports in different directions to ensure that in each mode, there is a chip removal port facing the ground.

[0081] See appendix Figure 8 As shown, in this utility model, the traction reset mechanism 7 includes a fixed pin 71 mounted on the baffle 31, a traction connecting block 72 mounted on the bamboo saw body 1, and a reset elastic member 73 with one end mounted on the traction connecting block 72 and the other end mounted on the first fixed shaft 110; wherein, the traction connecting block 72 is provided with a sliding groove adapted to the fixed pin 71, the sliding groove including a traction groove 721, a transition groove 722 communicating with the traction groove 721, and a limiting groove 723 provided on the end of the transition groove 722 away from the traction groove 721.

[0082] This invention utilizes a fixed pin 71 to connect the baffle 31 to the traction connecting block 72; a reset elastic element 73 (which can be a spring) provides traction reset force to ensure the baffle 31 is tightly attached to the sawn timber and the saw chain 22; a traction groove 721 limits the movement trajectory of the baffle 31; a transition groove 722 separates the traction groove 721 and the limiting groove 723, preventing the fixed pin 71 from entering the limiting groove 723 during use, requiring operator intervention to engage the fixed pin 71 with the limiting groove 723; and the limiting groove 723 allows the baffle 31 to rotate, enabling it to be fixedly stored when not in use.

[0083] See appendix Figure 1 — Figure 15 As shown, the specific steps for using this utility model dual-mode bamboo saw are as follows:

[0084] The first step is to switch the baffle 31 and the operating handle assembly mechanism 4 to the harvesting mode; specifically, the baffle 31 is installed on the side of the saw chain 22 facing the bamboo saw body 1, and the handle locking block 423 in the operating handle assembly mechanism 4 is engaged in one of the slots 421, namely the first slot.

[0085] 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 cut the saw material.

[0086] The third step involves bringing the activated bamboo saw close to the bamboo, positioning it between the saw chain 22 and the baffle 31. Guided by the baffle 31, the bamboo moves towards the shear connection point between the baffle 31 and the saw chain 22, i.e., towards the bamboo saw body 1. When the bamboo first contacts the saw chain 22, a slight rebound is observed. At this point, the bamboo is blocked by the baffle 31, maintaining contact with the saw chain 22, allowing the saw chain 22 to cut the bamboo. When the baffle 31 experiences the rebound impact, it is counteracted by the torsion spring 329 and the reset elastic element 73 in the traction reset mechanism 7. The impact force is buffered and absorbed to ensure that the baffle 31 is in close contact with the bamboo. After the saw chain 22 contacts the bamboo, the sawing force of the saw chain 22 on the bamboo is directed towards the operator, while the reaction force of the sawing force is directed away from the operator. At the same time, the baffle 31 exerts a pushing force on the bamboo towards the saw chain 22. Therefore, the reaction force of the sawing force can be used as a feed force. Under the premise of ensuring sawing efficiency, the operator can reduce the application of feed force and reduce the labor intensity of the operator. Moreover, during the sawing process, the angle between the guide plate 21 and the baffle is 10° to 150° depending on the size of the bamboo.

[0087] Fourth step, release trigger 451. At this time, trigger control button 452 resets and engages trigger 451 to prevent accidental triggering. Then, the operator rotates handle locking block 423 via handle locking switch 425 in handle assembly mechanism 4, causing handle locking block 423 to separate from the first slot. The operator then rotates handle assembly mechanism 4 to move handle locking block 423 into the second slot, completing the switching of handle assembly mechanism 4. Subsequently, baffle 31 is removed via quick-release structure 32 and installed on the second fixed shaft 111 at the other end of bamboo saw body 1. Simply put, first cancel the engagement of ball limit structure 320 with slider 3207 and make ball 324 contact slider 3207, then pull out baffle 31. It should be noted that the order of changing the position of baffle 31 and rotating handle assembly mechanism 4 can be reversed.

[0088] The fifth step is to restart the equipment and use the chain saw to prune and cut the bamboo.

[0089] In the third step, the angle between the guide plate 21 and the baffle can be from 20° to 90°.

[0090] Example 2

[0091] See 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 oil tank 17, and a second guide shroud 171 is installed on the upper oil tank 17 by means of bolts. The second guide shroud 171 is located between the upper oil tank 17 and the upper cover 9 and is used to guide the air driven by the outer rotor of the power source 13.

[0092] Example 3

[0093] See appendix Figure 17 As shown, 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 saw chips and make them enter the first chip discharge port 52 or the second chip discharge port 53, so as to prevent the saw chips from moving randomly on the side cover plate 51 due to the airflow of the saw chain 22, improve the chip discharge effect, improve the heat dissipation effect of the saw chain 22, and extend the service life of the saw chain 22.

[0094] Example 4

[0095] See appendix Figure 18 — Figure 21 As shown, the difference between this embodiment and the above embodiment is that, in this embodiment, the operating handle assembly 41 includes a first handle 43 movably connected to the bamboo saw body 1, a drive switch 45 installed on the first handle 43, and a rotary switching structure 42 installed on the first handle 43.

[0096] In this embodiment, the operating handle assembly 41 only has a first handle 43, which is connected to the bamboo saw body 1 via a rotation switching structure 42; this reduces the use of the second handle 44 and lowers the operating cost.

[0097] The above embodiments are illustrative of this application and are not intended to limit this application. Any simple modifications to this application are within the protection scope of this application.

Claims

1. A dual-form bamboo-cutting saw, characterized in that, It includes the bamboo saw body (1), sawing assembly (2), operating handle assembly mechanism (4), and chip removal mechanism (5); The sawing assembly (2) is mounted on the bamboo saw body (1); The operating handle assembly (4) includes an operating handle assembly (41) rotatably mounted on the bamboo saw body (1), and a rotation switching structure (42) mounted on the operating handle assembly (41). The operating handle assembly (41) can be rotated through the rotation switching structure (42). The chip removal mechanism (5) is installed on the bamboo saw body (1) and is used to remove the chips generated during the cutting process; The operating handle assembly (4) and the sawing assembly (2) have a harvesting mode and a timber processing mode; The harvesting mode is used to saw whole bamboo. When the bamboo saw is held by the operating handle assembly mechanism (4), the sawing surface of the sawing assembly (2) is parallel to the horizontal plane. The material processing mode is used to prune, open up the bamboo nodes and cut the bamboo into sections after sawing. When the bamboo saw is held in the same posture by operating the handle assembly mechanism (4), the sawing surface of the sawing component (2) forms an angle with the horizontal plane.

2. The dual-morphology bamboo saw according to claim 1, characterized in that, The sawing assembly (2) includes a guide plate (21) mounted on the bamboo saw body (1) and a saw chain (22) mounted on the guide plate (21). The bamboo saw body (1) includes a box (11) and an oil tank installed on the box (11). A first space is formed between the oil tank and the box (11). A power source (13) connected to a power source (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 and cut the saw material. A detachable baffle assembly (3) is pivotally mounted on the housing (11), which can rotate about the center of the pivot. The housing (11) is equipped with a traction reset mechanism (7) that is connected to the detachable baffle assembly (3). The traction reset mechanism (7) is used to provide a reset force for the detachable baffle assembly (3).

3. The dual-morphology bamboo saw according to claim 2, characterized in that, The bamboo saw body (1) also 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); the oil pump (15) has a filter screen (151) on its oil inlet pipe, and the oil tank has a third space that is connected to the oil inlet pipe of the oil pump (15).

4. The dual-morphology bamboo saw according to claim 2, characterized in that, The box (11) is provided with a first fixed shaft (110) and a second fixed shaft (111). There are no fewer than two second fixed shafts (111), and they are located on both sides of the bamboo saw body (1). The housing (11) is provided with a power connector (112), and a connecting wire (113) is installed on the power connector (112). The front end and / or rear end of the housing (11) and the oil tank are spliced ​​together to form an annular groove and / or cylindrical protrusion for movably connecting with the operating handle assembly (41). The detachable baffle assembly (3) includes a baffle (31) and a quick-release structure (32) disposed on the baffle (31) and a second fixed shaft (111). The baffle (31) is detachably mounted on either the second fixed shaft (111) via the quick-release structure (32) and rotates around the second fixed shaft (111).

5. The dual-form bamboo 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 reset mechanism (7) includes a fixed pin (71), a traction connecting block (72), and a reset elastic element (73); The fixed pin (71) is mounted on the baffle (31); The traction connecting block (72) is movably installed on the bamboo saw body (1). The traction connecting block (72) is provided with a sliding groove, which includes a traction groove (721), a transition groove (722) connected to the traction groove (721), and a limiting groove (723) provided on the end of the transition groove (722) away from the traction groove (721). The fixing pin (71) moves in the sliding groove. One end of the reset elastic element (73) is fixed on the traction connecting block (72), and the other end is fixedly installed on the first fixed shaft (110).

6. The dual-form bamboo saw according to claim 2, characterized in that, The operating handle assembly (41) includes a first handle (43) movably mounted on the bamboo saw body (1), a drive switch (45) mounted on the first handle (43), and the first handle (43) is provided with the rotary switching structure (42).

7. The dual-morphology bamboo saw according to claim 6, characterized in that, The first handle (43) is provided with a second space, and the drive switch (45) and the rotary switching structure (42) are installed in the second space; The drive switch (45) includes a trigger (451) and a trigger control button (452), and a trigger switch (453) corresponding to the trigger (451) is installed in the second space. The operating handle assembly (41) also includes a second handle (44) mounted on the first handle (43) and movably connected to the bamboo saw body (1), the second handle (44) having a rotary switching structure (42).

8. The dual-morphology bamboo saw according to claim 6, characterized in that, The rotary switching structure (42) includes a handle locking block (423), a handle locking elastic element (424), and a handle locking switch (425). The handle locking block (423) includes a limiting part (4231), a connecting part (4232) provided on the limiting part (4231), a mating part (4233) provided on the side of the connecting part (4232), a mating hole (4234) provided on the mating part (4233), and a slot (4235) provided on the connecting part (4232). One end of the handle locking elastic element (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) that is compatible with the slot (4235). The oil tank and the tank body (11) are provided with multiple slots (421), which correspond to the handle locking block (423), and the slots (421) are distributed at intervals around the rotation switching structure (42).

9. The dual-morphology bamboo saw according to claim 8, characterized in that, The first handle (43) and / or the second handle (44) are movably connected to the connecting part (4232).

10. The dual-morphology bamboo saw according to claim 2, characterized in that, The side wall of the oil tank is equipped with a flow guide.

Images