Portable bamboo cutting chain saw and configuration method of motor, saw chain and guide plate of portable bamboo cutting chain saw

Abstract

The invention discloses a portable bamboo cutting chain saw and a configuration method of a motor, a saw chain and a guide plate of the portable bamboo cutting chain saw. The portable bamboo cutting chain saw comprises a saw main body, wherein the saw main body comprises a guide plate, a saw chain and a driving device; the saw chain comprises a plurality of transmission chain pieces, a plurality of cutting tooth chain pieces, a plurality of connecting pieces and a chain shaft. The plurality of transmission chain sheets are arranged at intervals in pairs; the multiple cutting tooth chain pieces are connected between every two adjacent transmission chain pieces, and every two adjacent cutting tooth chain pieces are alternately distributed on the opposite sides of the transmission chain pieces. The multiple connecting pieces are located on the opposite sides of the multiple tooth cutting chain pieces correspondingly. The chain shafts are used for connecting the tooth cutting chain pieces, the transmission chain pieces and the connecting pieces together, so that the tooth cutting chain pieces are arranged on the multiple transmission chain pieces more compactly, dense tooth pitches are formed, the cutting speed is increased, the saw clamping phenomenon is reduced, the flatness of the cut surface is improved, the tearing phenomenon of the bamboo wall surface is reduced, and the cutting quality is improved. In the configuration method, the reasonable motor power and rotating speed effectively avoid the tearing or blocking phenomenon on the surface of the bamboo wood.

Description

Technical Field

[0001] The present invention relates to the technical field of bamboo felling equipment, in particular to a portable bamboo felling chain saw and a configuration method of a motor, a saw chain and a guide plate in the portable bamboo felling chain saw. Background Art

[0002] my country's bamboo forests are primarily distributed in the hilly southern region, characterized by complex terrain, high mountains, and deep valleys. These areas encompass a variety of terrain types, including flat land, gentle slopes, and steep slopes. Bamboo forests in this region are scattered across a wide range of areas, and infrastructure (such as forest roads and power supply) is relatively underdeveloped. Particularly in these mountainous and steep areas, bamboo harvesting, logging, and transportation still rely on traditional manual labor. This is not only labor-intensive but also prevents a significant amount of mature bamboo from being brought down from the mountains, resulting in a significant waste of resources.

[0003] As the aging of the population becomes increasingly obvious and labor costs continue to rise, there is an urgent need to develop advanced and practical bamboo felling, timber collection and transportation machinery based on the resources and terrain characteristics of the southern hilly bamboo areas, so as to reduce labor intensity, improve the efficiency of bamboo felling, timber collection and transportation, and effectively reduce production safety risks and labor costs.

[0004] Because bamboo primarily grows in the hilly and mountainous regions of southern China, large and medium-sized felling machinery cannot be used, and felling is largely done manually. However, manual felling presents problems such as low efficiency, uneven cuts, high labor intensity, and a dangerous working environment. Although a few regions have tried to use small portable equipment such as oil saws and electric shears to replace traditional machetes, these devices increase the weight of workers when going up and down the mountain, reduce their flexibility, and cannot prevent workers from bending and squatting for long periods of time. Therefore, they have not yet been widely used. As labor costs continue to rise, labor costs account for almost two-thirds of the cost of each ton of bamboo purchased by bamboo companies. Therefore, there is an urgent need to develop a safe, efficient, and quality-guaranteed felling device to improve felling efficiency, reduce labor costs, and improve working conditions.

[0005] It's worth noting that conventional chainsaws, used for cutting wood, are often used to cut bamboo. Unlike wood, bamboo's unique macroscopic and microscopic structure: thin, hollow walls with a smooth surface lacks transverse cellular structures (such as wood rays) that provide transverse binding force. Furthermore, the vascular bundles composed of longitudinal cells are strong, resilient, and difficult to sever. Consequently, bamboo often tears when cut. This is primarily due to the chain of conventional chainsaws failing to quickly sever the surface fibers upon contact, leading to tearing.

[0006] Although existing general-purpose chainsaws for cutting wood (such as lithium electric saws or oil saws) can cut wood quickly, when cutting bamboo, the chainsaw has problems such as large guide bars and chains, wide saw paths, low rotation speed, and insufficient power matching. In addition, bamboo is hollow and has strong longitudinal fiber toughness, resulting in slow cutting speed, easy saw jamming, and uneven cutting surface, which can easily cause tearing of the bamboo wall surface, greatly affecting the cutting quality.

[0007] Furthermore, due to the heavy weight, large guide bar, and wide chain of ordinary wood chainsaws, energy consumption is high. In bamboo forests with high mountains, deep valleys, and steep slopes, operation is inconvenient, the operator's labor intensity is high, and the safety risks are high.

[0008] Therefore, there is an urgent need for a portable bamboo felling chain saw designed specifically for bamboo felling operations to increase cutting speed, reduce saw jamming, improve the flatness of the cut surface, reduce the tearing phenomenon on the bamboo wall surface, and improve cutting quality. Summary of the Invention

[0009] In order to solve the technical problems that existing general chainsaws have in cutting bamboo, such as slow cutting speed, easy saw jamming, uneven cutting surface, and easy tearing of bamboo wall surface, which has a great impact on cutting quality, the purpose of the present invention is to provide a portable bamboo felling chain saw and its configuration method of motor, saw chain and guide plate, aiming to increase cutting speed, reduce saw jamming, improve the flatness of cutting surface, reduce tearing of bamboo wall surface, and improve cutting quality.

[0010] The technical solutions provided by the present invention are as follows: A portable bamboo felling chain saw comprises a saw body, the saw body comprising a guide plate, a saw chain and a drive device, the guide plate being arranged at the front end of the saw body, the saw chain being wound around the outer periphery of the guide plate, and the drive device being used to drive the saw chain to rotate along the outer periphery of the guide plate; the saw chain comprises: Multiple transmission chain plates are arranged at intervals of two; A plurality of cutting chain plates are respectively connected between two adjacent transmission chain plates, and the two adjacent cutting chain plates are alternately distributed on opposite sides of the transmission chain plates; a plurality of connecting pieces, respectively located on opposite sides of the plurality of cutting chain pieces; The chain shaft is used to connect the cutting chain plate, the transmission chain plate and the connecting plate together.

[0011] Furthermore, the cutting tooth chain piece is configured as an anti-rebound cutting tooth chain piece; And / or, the transmission chain plate is configured as an anti-rebound transmission chain plate; And / or, the connecting piece is configured as an anti-rebound connecting piece.

[0012] Further, the length of the guide plate is set to 10 inches; And / or, the driving device is a motor, and the rotation speed of the motor is set to 12000-15000 r / min; And / or, the pitch of the saw chain is set to 6.35 mm, the thickness of the transmission chain is set to 1.1 mm, and the tooth shape of the cutting chain is set to circular arc teeth.

[0013] Furthermore, the portable bamboo felling chain saw also includes an adjustable telescopic rod, which is detachably connected to the saw body.

[0014] Furthermore, the saw body further comprises a battery mounting seat, and the battery mounting seat is arranged at the rear end of the saw body; The front end of the adjustable telescopic rod is hinged with a connecting base, and the battery mounting seat can be detachably mounted on the connecting base.

[0015] Furthermore, a locking buckle is provided on the connection base, and the battery mounting base is locked on the connection base by the locking buckle.

[0016] Furthermore, the rear end of the adjustable telescopic rod is connected to a handle, and the adjustable telescopic rod is rotatable relative to the handle.

[0017] Furthermore, a start button is provided on the handle, and a battery installation portion is provided at the rear end of the handle.

[0018] In another aspect, the present invention further provides a method for configuring a motor, a saw chain, and a guide plate in a portable bamboo felling chain saw, comprising the following steps: Motor configuration: including motor power configuration and motor speed configuration; Saw chain configuration: including saw chain model configuration, saw chain quality configuration, saw chain cutting efficiency configuration and saw chain sharpness protection period configuration. The saw chain model configuration includes transmission chain thickness configuration, tooth pitch configuration and tooth profile configuration; Guide bar configuration: including the configuration of guide bar length, guide bar groove depth and guide bar groove width.

[0019] Furthermore, the motor configuration specifically includes the following steps: According to the age of the bamboo, its fiber characteristics and surface hardness, set the appropriate saw chain linear speed range; Select the appropriate motor power range based on the selected saw chain linear speed range and the weight requirements of the portable bamboo felling chain saw; select the appropriate motor rated power based on the selected motor power range and the lithium battery capacity range; According to the rated power of the selected motor, select the appropriate motor speed and torque combination.

[0020] Compared with the prior art, the portable bamboo felling chain saw provided by the embodiment of the present invention has at least the following technical effects: The portable bamboo felling chain saw includes a saw body, which includes a guide bar, a saw chain, and a drive device. The guide bar is arranged at the front end of the saw body, the saw chain is wound around the outer periphery of the guide bar, and the drive device is used to drive the saw chain to rotate along the outer periphery of the guide bar. The saw chain includes multiple transmission chain plates, multiple cutting chain plates, multiple connecting plates, and a chain shaft. The multiple transmission chain plates are arranged in pairs. The multiple cutting chain plates are respectively connected between two adjacent transmission chain plates, and the two adjacent cutting chain plates are respectively alternately distributed on opposite sides of the transmission chain plates. The multiple connecting plates are respectively located on opposite sides of the multiple cutting chain plates. The chain shaft is used to connect the cutting chain plates, the transmission chain plates, and the connecting plates together. This design alternately distributes the multiple cutting chain plates on opposite sides of the multiple transmission chain plates, making the arrangement of the cutting chain plates on the multiple transmission chain plates more compact, forming a close tooth pitch, and increasing the effective cutting area. This increases the sawing speed, reduces the sawing resistance and rebound force, and reduces the positive pressure required during the sawing process, thereby making it easier to hold and more convenient to operate. By optimizing the arrangement of the cutting teeth, the guide bar and saw chain are reduced in size, shortening the saw path. This not only increases the saw's rotational speed, but also reduces weight and energy consumption. This portable lithium-powered bamboo felling chain saw is particularly well-suited to the high mountains, deep ravines, and steep slopes found in the hilly bamboo regions of southern China. It effectively reduces operator workload, improves efficiency, and mitigates safety risks. Furthermore, this portable lithium-powered bamboo felling chain saw effectively reduces saw jamming, improves the smoothness of the cut surface, and reduces tearing of the bamboo wall, thereby improving cut quality.

[0021] The configuration of the motor, saw chain, and guide bar in a portable bamboo chain saw ensures adequate cutting force during the cutting process, effectively preventing tearing or jamming on the bamboo surface and ensuring a smooth and efficient cutting process. Furthermore, the proper configuration of the saw chain and guide bar improves cutting precision and stability, further optimizing cut quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A schematic diagram of the overall structure of a portable bamboo felling chain saw according to an embodiment of the present invention; Figure 2 This is a schematic structural diagram of a saw body according to an embodiment of the present invention; Figure 3 Schematic diagram of the structure of a saw chain in one embodiment of the present invention; Figure 4 for Figure 3 A partial enlarged schematic diagram of point A in the middle; Figure 5 This is a schematic structural diagram of an adjustable telescopic rod in one embodiment of the present invention; Figure 6 for Figure 5 A partial enlarged schematic diagram of point B in the middle; Figure 7 for Figure 5 A partial enlarged schematic diagram of point C in the middle; Figure 8 A flow chart of a method for configuring a motor, a saw chain, and a guide bar in a portable bamboo felling chain saw of the present invention; Figure 9 The figure is a flow chart of the motor configuration method in the portable bamboo felling chain saw of the present invention.

[0024] Figure numerals: 10, saw body; 11, guide plate; 12, saw chain; 121, transmission chain plate; 122, cutting tooth chain plate; 123, connecting plate; 124, chain shaft; 13, battery mounting seat; 20, adjustable telescopic rod; 21, connecting base; 22, locking buckle; 23, handle; 231, start button; 232, battery mounting part. DETAILED DESCRIPTION

[0025] To help those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention are clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0026] It should be noted that when an element is referred to as being “fixed on” or “set on” another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0027] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0029] It should be noted that the structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention.

[0030] Please refer to the attached Figure 1 To the attached Figure 7 As shown, one embodiment of the present invention provides a portable bamboo felling chain saw, comprising a saw body 10, the saw body 10 including a guide bar 11, a saw chain 12, and a drive device. The guide bar 11 is disposed at the front end of the saw body 10, the saw chain 12 is wound around the outer periphery of the guide bar 11, and the drive device is used to drive the saw chain 12 to rotate along the outer periphery of the guide bar 11. The saw chain 12 includes a plurality of transmission chain links 121, a plurality of cutting chain links 122, a plurality of connecting links 123, and a chain shaft 124. The plurality of transmission chain links 121 are spaced apart in pairs; the plurality of cutting chain links 122 are respectively connected between two adjacent transmission chain links 121, and the adjacent two adjacent cutting chain links 122 are respectively alternately distributed on opposite sides of the transmission chain links 121; the plurality of connecting links 123 are respectively located on opposite sides of the plurality of cutting chain links 122; and the chain shaft 124 is used to connect the cutting chain links 122, the transmission chain links 121, and the connecting links 123 together.

[0031] In this embodiment, the saw chain 12 includes a plurality of transmission links 121, a plurality of cutting links 122, a plurality of connecting links 123, and a chain shaft 124. The plurality of transmission links 121 are spaced apart in pairs. The plurality of cutting links 122 are connected between two adjacent transmission links 121, and the adjacent cutting links 122 are alternately located on opposite sides of the transmission links 121. The plurality of connecting links 123 are located on opposite sides of the plurality of cutting links 122. The chain shaft 124 is used to connect the cutting links 122, the transmission links 121, and the connecting links 123. This design alternately distributes the plurality of cutting links 122 on opposite sides of the plurality of transmission links 121, making the arrangement of the cutting links 122 on the plurality of transmission links 121 more compact, forming a close tooth pitch, increasing the effective cutting area, improving the sawing speed, reducing the sawing resistance and rebound force, and reducing the positive pressure required during the sawing process, thereby making it easier to hold and more convenient to operate. By optimizing the arrangement of the cutting tooth chain links 122, the dimensions of the guide plate 11 and saw chain 12 are reduced, shortening the saw path. This not only increases the chain saw's rotational speed, but also reduces weight and energy consumption. This portable lithium-powered bamboo felling chain saw is more suitable for the high mountains, deep ravines, and steep slopes found in the hilly bamboo areas of southern China. It effectively reduces operator workload, improves operational efficiency, and mitigates safety risks. Furthermore, this portable lithium-powered bamboo felling chain saw effectively reduces saw sticking, improves the smoothness of the cut surface, reduces tearing of the bamboo wall, and improves cut quality.

[0032] In some optional embodiments, the cutter chain 122 is configured as an anti-rebound cutter chain. Compared with traditional cutter chains, the anti-rebound cutter chain can effectively reduce the rebound phenomenon that may occur during operation, thereby improving the safety and stability of operation.

[0033] In some optional embodiments, the transmission chain 121 is configured as an anti-rebound transmission chain to improve the reliability of the portable bamboo felling chain saw and reduce potential risks to the operator caused by unexpected rebound.

[0034] In some optional embodiments, the connecting piece 123 is configured as an anti-rebound connecting piece. The use of the anti-rebound connecting piece can provide a more stable and secure connection between the various transmission chain pieces 121, further improving the safety and stability of the operation.

[0035] In some optional embodiments, the length of the guide plate 11 is set to 10 inches. After the corresponding lithium battery is combined with the chain saw, the overall weight is only 2 kg, which is portable and lightweight.

[0036] In some optional embodiments, the driving device is a motor, and the rotation speed of the motor is set to 12000-15000 r / min.

[0037] In some optional embodiments, the pitch of the saw chain 12 is set to 6.35 mm, the thickness of the transmission chain piece 121 is set to 1.1 mm, and the tooth shape of the cutting chain piece 122 is set to circular arc teeth.

[0038] In some optional embodiments, the portable bamboo chainsaw further includes an adjustable telescopic rod 20, which is detachably connected to the saw body 10. The adjustable telescopic rod 20 can be adjusted in length according to actual needs, allowing the operator to cut bamboo with the aid of the adjustable telescopic rod 20 without having to climb to high places, cliffs, or high ridges, saving time and effort. Furthermore, the bamboo chainsaw with the adjustable telescopic rod 20 can be extended and adjusted in angle as needed, making it suitable for sites with slopes ≤ 15°. This effectively eliminates the need for the operator to frequently bend or squat, improving bamboo felling efficiency and reducing safety risks during operation. The detachable connection between the adjustable telescopic rod 20 and the saw body 10 allows for easy removal when not in use, making it easier to carry and store. It should be noted that this portable bamboo chainsaw can be used not only for felling bamboo but also for operations such as hooking, decapping, and trimming bamboo during bamboo forest cultivation, enhancing its versatility and practicality.

[0039] In some optional embodiments, the saw body 10 further includes a battery mount 13, which is disposed at the rear end of the saw body 10 for mounting a lithium battery. The lithium battery serves as a power source and can provide power to the saw body 10 without using the adjustable telescopic rod 20. The front end of the adjustable telescopic rod 20 is hinged with a connecting base 21, and the battery mount 13 can be detachably mounted on the connecting base 21. The connecting base 21 can be rotated relative to the adjustable telescopic rod 20 so that the angle of the saw body 10 can be adjusted as needed, and the operator can better control the cutting angle, thereby improving the flexibility and accuracy of the operation. The angle adjustment range of the saw body 10 is 0 to 30°, but is not limited thereto.

[0040] In some optional embodiments, to ensure a stable connection between the battery mount 13 and the connection base 21, a locking buckle 22 is provided on the connection base 21, and the battery mount 13 is locked to the connection base 21 through the locking buckle 22. When disassembly is required, the operator only needs to simply operate the locking buckle 22 to remove the battery mount 13 from the connection base 21.

[0041] In some optional embodiments, the rear end of the adjustable telescopic rod 20 is connected to a handle 23, and the adjustable telescopic rod 20 is rotatable relative to the handle 23. The rotatable angle range of the adjustable telescopic rod 20 relative to the handle 23 is 0-90 degrees, but is not limited thereto.

[0042] In some optional embodiments, the handle 23 is provided with a start button 231 to facilitate the operator's quick start of the saw body 10. A battery mounting portion 232 is provided at the rear end of the handle 23 for receiving a lithium battery. This lithium battery, when used with the adjustable telescopic pole 20, can provide power to the saw body 10. Of course, the power source is not limited to the lithium battery installed in the battery mounting portion 13 or the battery mounting portion 232. A battery backpack can also be connected to power the bamboo chainsaw.

[0043] The portable bamboo felling chain saw has the following advantages: (1) Portable and lightweight: The entire device weighs only 2kg (including battery), making it easy to carry and operate.

[0044] (2) Efficient bamboo felling: The felling speed is fast. For a bamboo with a diameter of 15 cm, it only takes 3-5 seconds to complete the felling, and 10 bamboos can be felled per minute.

[0045] (3) Low energy consumption: The rated output power during bamboo felling is ≤1kw. It is equipped with a lithium battery pack or battery backpack and has a long battery life.

[0046] (4) Good bamboo felling effect: During the bamboo felling process, there is basically no tearing on the bamboo surface, the cutting speed is fast, the cross section is flat, and the saw is not easy to jam, which makes the guide bar and saw chain less worn and durable.

[0047] (5) High flexibility: Equipped with an adjustable telescopic rod, it supports free disassembly and assembly, and the telescopic length and angle can be adjusted according to actual needs, effectively reducing labor intensity, reducing operational safety risks, and effectively reducing bamboo felling costs.

[0048] The portable bamboo felling chainsaw provided in the above-mentioned embodiments is particularly suitable for the hilly bamboo-felling areas of southern China, characterized by complex terrain, high mountains and deep ravines, and relatively underdeveloped infrastructure such as forest roads and power supply. In this region, bamboo felling primarily relies on manual felling with a chopping knife, which presents a series of problems, including high labor intensity, low felling efficiency, high labor costs, and significant operational safety risks. To address these issues, the present embodiment has developed an adaptable bamboo felling chainsaw that features rapid felling speed, long battery life, excellent stability, and safety. This effectively replaces traditional felling methods using manual felling knives and chainsaws, improving not only felling efficiency but also reducing the overall cost of felling, enabling bamboo farmers and companies to achieve greater profit margins and enhance production efficiency.

[0049] The performance of a portable bamboo chainsaw, particularly the motor power and speed, is directly related to the quality of bamboo cutting. Proper motor power and speed ensure sufficient cutting force during the cutting process, effectively preventing tearing or jamming on the bamboo surface and ensuring a smooth and efficient cutting process. Furthermore, the proper configuration of the saw chain 12 and guide bar 11 helps improve cutting accuracy and stability, further optimizing cutting quality.

[0050] Therefore, please refer to the attached Figure 8 As shown, one embodiment of the present invention provides a method for configuring a motor, saw chain, and guide plate in a portable bamboo chain saw, aiming to optimize bamboo cutting performance. The configuration method includes the following steps: S1. Motor configuration: including motor power configuration and motor speed configuration; S2. Saw chain configuration: including saw chain model configuration, saw chain quality configuration, saw chain cutting efficiency configuration and saw chain sharpness protection period configuration. Saw chain model configuration includes transmission chain thickness configuration, tooth density configuration and tooth shape configuration; S3. Guide plate configuration: including the configuration of guide plate length, guide plate groove depth and guide plate groove width.

[0051] Please see the attached Figure 9 As shown, in some optional embodiments, the motor configuration specifically includes the following steps: S101. Setting an appropriate saw chain linear speed range based on the age, fiber characteristics, and surface hardness of the bamboo; S102. Selecting an appropriate motor power range based on the selected saw chain linear speed range and the weight requirement of the portable bamboo felling chain saw; selecting an appropriate motor rated power based on the selected motor power range and the lithium battery capacity range; S103. Select appropriate motor speed and torque matching values ​​according to the selected motor rated power.

[0052] Specifically, the age of the bamboo, its fiber properties, and its surface hardness directly impact its cutting performance. Bamboos of different ages exhibit varying fiber properties and surface hardness. For example, one-year-old bamboo has softer fibers, making it easier to cut; whereas five-year-old bamboo is more difficult to cut due to its thicker fibers and increased surface hardness. Furthermore, the bamboo's growth type (such as the scattered growth of moso bamboo and the clumping growth of cycads) also influences cutting performance. The rebound feel of the bamboo, the smoothness of the cut, and the presence of tearing or jamming on the surface are all important indicators for evaluating cutting quality.

[0053] In order to optimize the cutting effect, it is first necessary to set a suitable saw chain linear speed range based on the age of the bamboo, its fiber characteristics, and its surface hardness. The saw chain linear speed refers to the speed at which the saw chain moves along the guide bar when the portable bamboo felling chain saw is working. The saw chain linear speed is an important factor affecting the efficiency and quality of bamboo cutting. The appropriate saw chain linear speed can balance cutting efficiency and cutting quality, ensuring that while maintaining efficient cutting, damage to the bamboo surface or uneven cutting is avoided. Specifically, for soft bamboo (such as 1-year-old bamboo), a higher saw chain linear speed can be selected; for harder bamboo (such as 5-year-old bamboo), the saw chain linear speed should be reduced to avoid excessive friction and damage to the bamboo surface. Exemplarily, the saw chain linear speed is set to no less than 6m / s.

[0054] Secondly, motor power directly affects the weight of a portable bamboo chainsaw. Considering ease of use, the weight of a portable bamboo chainsaw should be kept below 1.5-2kg. To meet this weight requirement, a motor with an appropriate power range must be selected to ensure sufficient cutting force without adding excessive weight. After determining the motor power range, the battery life needs to be considered in conjunction with the capacity of the lithium battery (30-46V) to select the appropriate motor rated power. Furthermore, after determining the motor power, the motor speed and torque ratio must be further adjusted to achieve the optimal cutting effect. Optionally, the motor rated output power is 860W and the motor speed is 12,000 rpm.

[0055] In summary, by analyzing the fiber characteristics, surface hardness, and cutting difficulty of bamboo, and rationally configuring the motor power, speed, and torque, efficient and stable performance can be achieved during the cutting process, avoiding problems such as surface tearing and jamming, thereby improving the quality and efficiency of bamboo cutting.

[0056] Choosing the right saw chain is crucial when cutting bamboo. The right saw chain not only ensures a smooth cut but also effectively reduces burrs, cracks, and unevenness. Saw chain configuration includes factors such as chain model, quality, cutting efficiency, and sharpness protection period.

[0057] Common saw chain models include 1 / 4, 3 / 8LP, 325, 3 / 8, and 404. In one specific embodiment, the selected saw chain model is 1 / 4 (pitch 6.35mm), corresponding to a drive chain with a thickness of 1.1mm and arc-shaped teeth. The saw chain consists of multiple drive chains, cutting chain links, connecting links, and a chain shaft, with the cutting chain links alternating on both sides of the drive chain. This arrangement allows the cutting chain links to be more closely spaced, forming a dense tooth pitch, which allows for more precise breaking of the dense fiber structure of bamboo, improving cutting quality, reducing burrs, cracks, and unevenness, ultimately optimizing bamboo cutting results and enhancing the smoothness of subsequent processing.

[0058] Saw chain quality directly impacts the lifespan and durability of portable bamboo chainsaws. Key factors in determining saw chain quality include hardness, static breaking strength, disturbance, and material limit. Furthermore, the saw chain's cutting efficiency is closely related to motor power, guide bar length, chain performance, and the characteristics of the bamboo being cut. For example, the saw chain's cutting efficiency can be set to no less than 20 cm² / s, with a goal of 35 cm² / s being an acceptable setting.

[0059] The sharpness protection period of the saw chain is an important factor affecting the durability and stability of cutting. In order to ensure the continuous and stable cutting effect, the sharpness protection period of the saw chain should be no less than 5 hours.

[0060] The guide bar should be compatible with the saw chain. Guide bar configuration includes the guide bar length, guide bar groove depth, and guide bar groove width. The guide bar length can be determined based on the diameter of the bamboo being cut. For example, when cutting moso bamboo, a guide bar length of 150-300mm is generally selected, depending on the diameter of the bamboo (the diameter of the lowest part of the bamboo harvested in my country generally does not exceed 200mm). Specifically, a 10-inch guide bar (with an effective cutting length of up to 250mm) is recommended to meet the cutting requirements of bamboo of varying sizes. The guide bar groove depth and width can be appropriately selected based on the saw chain model. It is worth noting that each guide bar can usually be compatible with more than one saw chain model; for example, the same guide bar can be compatible with both 1 / 4 and 3 / 8LP saw chains. Furthermore, the guide bar length configuration should also consider its impact on the saw chain's linear speed. Generally speaking, larger and longer guide bars increase resistance and torque during cutting. With the same motor power, increasing the guide bar length will reduce the motor speed, resulting in a lower linear speed of the saw chain. Therefore, the guide bar length configuration needs to find a balance between cutting efficiency and cutting quality to ensure the best cutting quality and work efficiency.

[0061] In addition to guide plate length, guide plate groove depth, and guide plate groove width, other crucial indicators include hardness, thickness, and flatness. Specifically, the hardness of the guide plate must meet certain requirements to ensure it resists wear and deformation during intensive use. The hardness of the guide plate body should be no less than 38 HRC (Rockwell hardness), while the hardness of the guide rail surface should be no less than 53 HRC. This effectively improves the guide plate's wear resistance and extends its service life.

[0062] In order to obtain the optimal configuration of the portable bamboo felling chain saw motor, saw chain and guide bar, the following configuration combinations are listed.

[0063]

[0064] When using this configuration for bamboo cutting, with a motor rated at 860W, speeds of 12,000 and 15,000 rpm, a 10-inch guide bar, a 1 / 4 saw chain, a close pitch, and arc-shaped teeth, the cutting effect was optimal. The cut surface was smooth, with no tears in the bamboo, and no jamming during the cutting process, resulting in a smooth and efficient process.

[0065] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A portable bamboo felling chain saw, characterized in that: The saw comprises a main body, the main body comprising a guide plate, a saw chain and a driving device, the guide plate being arranged at the front end of the saw body, the saw chain being wound around the outer periphery of the guide plate, and the driving device being used to drive the saw chain to rotate along the outer periphery of the guide plate; the saw chain comprises: Multiple transmission chain plates are arranged at intervals of two; A plurality of cutting chain plates are respectively connected between two adjacent transmission chain plates, and the two adjacent cutting chain plates are alternately distributed on opposite sides of the transmission chain plates; a plurality of connecting pieces, respectively located on opposite sides of the plurality of cutting chain pieces; The chain shaft is used to connect the cutting chain plate, the transmission chain plate and the connecting plate together.

2. The portable bamboo felling chain saw according to claim 1, characterized in that: The cutting tooth chain piece is configured as an anti-rebound cutting tooth chain piece; And / or, the transmission chain plate is configured as an anti-rebound transmission chain plate; And / or, the connecting piece is configured as an anti-rebound connecting piece.

3. The portable bamboo felling chain saw according to claim 1, characterized in that: The length of the guide plate is set to 10 inches; And / or, the driving device is a motor, and the rotation speed of the motor is set to 12000-15000 r / min; And / or, the pitch of the saw chain is set to 6.35 mm, the thickness of the transmission chain is set to 1.1 mm, and the tooth shape of the cutting chain is set to circular arc teeth.

4. The portable bamboo felling chain saw according to claim 1, characterized in that: It also includes an adjustable telescopic rod, which is detachably connected to the saw body.

5. The portable bamboo felling chain saw according to claim 4, characterized in that: The saw body further includes a battery mounting seat, wherein the battery mounting seat is disposed at the rear end of the saw body; The front end of the adjustable telescopic rod is hinged with a connecting base, and the battery mounting seat can be detachably mounted on the connecting base.

6. The portable bamboo felling chain saw according to claim 5, characterized in that: The connection base is provided with a locking buckle, and the battery mounting base is locked on the connection base by the locking buckle.

7. The portable bamboo felling chain saw according to claim 6, characterized in that: The rear end of the adjustable telescopic rod is connected to a handle, and the adjustable telescopic rod is rotatable relative to the handle.

8. The portable bamboo felling chain saw according to claim 7, characterized in that: A start button is provided on the handle, and a battery installation portion is provided at the rear end of the handle.

9. A method for configuring a motor, a saw chain, and a guide plate in a portable bamboo felling chain saw, characterized in that: The following steps are involved: Motor configuration: including motor power configuration and motor speed configuration; Saw chain configuration: including saw chain model configuration, saw chain quality configuration, saw chain cutting efficiency configuration and saw chain sharpness protection period configuration. The saw chain model configuration includes transmission chain thickness configuration, tooth pitch configuration and tooth profile configuration; Guide bar configuration: including the configuration of guide bar length, guide bar groove depth and guide bar groove width.

10. The method for configuring the motor, saw chain and guide plate in a portable bamboo felling chain saw according to claim 9, characterized in that: The motor configuration specifically includes the following steps: According to the age of the bamboo, its fiber characteristics and surface hardness, set the appropriate saw chain linear speed range; Select the appropriate motor power range based on the selected saw chain linear speed range and the weight requirements of the portable bamboo felling chainsaw; select the appropriate motor rated power based on the selected motor power range and the lithium battery capacity range; According to the rated power of the selected motor, select the appropriate motor speed and torque combination.

Images