A telescopic feller head with easy branch removal

Abstract

The application discloses a telescopic wood cutting machine head convenient for branch removal, which comprises a branch removal end, a cutting end arranged below the branch removal end, and a telescopic sliding device connecting the branch removal end and the cutting end; the branch removal end comprises a first mounting bottom plate, a fixed knife holder, a first grabbing device and a grabbing wheel device arranged on the side surface of the first mounting bottom plate from top to bottom; the fixed knife holder, the first grabbing device and the grabbing wheel device are connected with the first mounting plate through welding; the cutting end comprises a second mounting bottom plate, a second grabbing device and a cutting device arranged on the side surface of the second mounting bottom plate from top to bottom; the second grabbing device and the cutting device are connected with the second mounting plate through welding; the telescopic sliding device comprises a fixed frame, and the fixed frame is connected with the first mounting bottom plate through welding; the application has stable and practical structure, can quickly and accurately remove branches and cut off the tree trunk of large-size or thick trees, improves work efficiency, saves a large amount of labor, and improves the safety of operators.

Description

Technical Field

[0001] This invention belongs to the field of logging equipment technology, and in particular relates to a telescopic logging head that facilitates branch removal. Background Technology

[0002] With the progress of the times and the development of science and technology, the application of wood processing is increasing. Wood processing is the processing of wood as raw material, mainly using mechanical or chemical methods. Its products still retain the basic characteristics of wood. In the forestry industry, the wood processing industry and the chemical processing of forest products are both downstream industries of forest harvesting and transportation, and are important sectors for the comprehensive utilization of wood resources.

[0003] Currently, in the process of felling trees, it is necessary to cut the trunk and remove small branches to facilitate later transportation and processing. The traditional logging method is to cut down trees manually, which is not only inefficient and difficult to operate, but also very dangerous. In addition, existing logging machines are prone to jamming when removing branches from some large and severely bent trees, causing damage to both the trees and the equipment. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of traditional logging methods, which rely on manual felling, resulting in low work efficiency, difficult felling operations, and significant dangers. Furthermore, existing logging machines are prone to jamming when removing branches from large and severely bent trees, causing damage to both the trees and the equipment. This invention provides a telescopic logging head that facilitates branch removal.

[0005] The present invention achieves the above-mentioned objective through the following technical solution: including a branch removal end, a cutting end provided below the branch removal end, and the branch removal end and the cutting end being connected by a telescopic sliding device;

[0006] Except for the branch end, there is a first mounting base plate. On one side of the first mounting base plate, from top to bottom, there are a fixed knife holder, a first gripper and a gripping wheel device. The fixed knife holder, the first gripper and the gripping wheel device are all connected to the first mounting plate by welding.

[0007] The cutting end includes a second mounting base plate. A second gripper and a cutting device are arranged sequentially from top to bottom on one side of the second mounting base plate. The second gripper and the cutting device are both connected to the second mounting base plate by welding.

[0008] The telescopic sliding device includes a fixed frame, which is welded to a first mounting base plate. The fixed frame contains longitudinally symmetrical slide rails in an "I" shape, which pass through the bottom of the fixed frame and connect to a second mounting base plate. A reinforcing plate is located between the ends of the two slide rails and on the side of the second mounting plate, and is welded to the second mounting plate. Several rollers are longitudinally arranged between the slide rails and the fixed frame. Several first clamping rollers are longitudinally arranged on the upper surface of the slide rails. Clamping rollers are transversely arranged between the first clamping rollers, and are connected to the fixed frame via rolling bearings. A second clamping roller is located at the junction of the slide rails and the fixed frame. A first hydraulic cylinder is longitudinally arranged in the middle of the fixed frame. A fixing rod is transversely arranged at one end of the first hydraulic cylinder, passing through the fixed frame. The other end of the first hydraulic cylinder passes through the fixed frame and connects to the reinforcing plate.

[0009] Furthermore, the edge of the fixed blade holder has a protrusion, which can be used to initially remove branches.

[0010] Furthermore, the first gripper includes a first connecting plate, a second connecting plate below the first connecting plate, and a fixing rod between both ends of the first and second connecting plates. An arc-shaped gripper is provided on the outer diameter surface of each of the two fixing rods, and a blade is provided on the inner side of the arc-shaped gripper. The arc-shaped gripper is connected to the fixing rod via a rolling bearing. A second hydraulic cylinder is provided between one end of each arc-shaped gripper and the fixing rod. One end of the second hydraulic cylinder is rotatably connected to the arc-shaped gripper, and the other end is rotatably connected to the fixing rod. The first and second connecting plates are welded to the mounting base plate. The first and second grippers have the same structure and can further remove branches from the tree trunk.

[0011] Furthermore, the clamping device includes a third connecting plate located below the second connecting plate. A fixing rod passes through the second connecting plate and extends to the third connecting plate. Symmetrically arranged double-layered arc-shaped grips are provided between the two ends of the third and second connecting plates. Each double-layered arc-shaped grip contains several rollers, which are connected to the double-layered arc-shaped grips via roller shafts. The double-layered arc-shaped grips are rotatably connected to the fixing rod. A connecting shaft is provided between one end of each of the two double-layered arc-shaped grips. A third hydraulic cylinder is provided between the two connecting shafts, with both ends of the third hydraulic cylinder rotatably connected to the two connecting shafts respectively. A synchronous connecting rod is provided between the upper surfaces of the two double-layered arc-shaped grips, which can guide and lock the tree in place.

[0012] Furthermore, the cutting device includes a saw box, with a cutting motor located at one end of the saw box. The cutting motor drive shaft passes through the saw box, and a cutting saw is located inside the saw box. The cutting saw and the cutting motor are connected via the drive shaft. A first fixed shaft is located on the lower surface of the cutting saw end, and a second fixed shaft is located on the lower surface inside the saw box. A fourth hydraulic cylinder is located between the first and second fixed shafts. One end of the fourth hydraulic cylinder is rotatably connected to the first fixed shaft, and the other end of the fourth hydraulic cylinder is rotatably connected to the second fixed shaft, which facilitates the cutting of tree trunks.

[0013] Furthermore, the inner side of the arc-shaped gripper on the second gripper is equipped with anti-slip teeth, which can improve the gripping force of the second gripper on the tree trunk.

[0014] Furthermore, the upper surfaces of the first, second, and third connecting plates are all equipped with dust covers to prevent tree debris from entering the device and affecting its operation.

[0015] Furthermore, the synchronous linkage includes a first linkage, with a second linkage at both ends of the first linkage. One end of the second linkage is rotatably connected to a fixed rod, and the other end of the second linkage is rotatably connected to a connecting shaft. Both ends of the first linkage are rotatably connected to the second linkage, which can play a role in synchronizing the movement of the clamping wheel device, so that the clamping wheel can clamp the tree trunk tightly.

[0016] Beneficial effects: This invention has a reasonable design, simple and stable structure, and strong practicality. The first and second grippers can open and close via the action of the second hydraulic cylinder. The gripping wheel device can also open and close synchronously via the action of the third hydraulic cylinder and the synchronous connecting rod. This allows the tree trunk to be gripped first. At this time, the cutting motor drives the cutting saw to cut off the bottom of the trunk, allowing the trunk to be lifted up. The second gripper is equipped with anti-slip teeth to firmly hold the trunk. At this time, the first hydraulic cylinder pushes the branch removal end upward, and the blades on the fixed blade holder and the first gripper can remove branches from the trunk. The gripping wheel device plays a guiding and rolling role. After the branch removal is completed, the first hydraulic cylinder retracts, and through the cooperation of the slide rail, rollers, first clamping wheel, second clamping wheel, and clamping roller, the cutting end is precisely pulled up. At this time, the cutting saw is ejected by the action of the fourth hydraulic cylinder, cutting off the branched tree trunk. This process is repeated until the entire trunk is removed. This not only saves manual felling and reduces labor costs, but also improves work efficiency. Moreover, this invention removes branches by pulling the trunk, so it can effectively remove branches from thicker or larger trunks. The branch removal is smooth, protecting the trees and equipment, and improving the safety of operators. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the exploded structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the branch end structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the cutting end structure of the present invention;

[0021] Figure 5 This is a schematic diagram of the telescopic sliding device of the present invention.

[0022] In the diagram: 1-Removal end, 2-Cutting end, 3-Telescopic sliding device;

[0023] 101-First mounting base plate, 102-Fixed tool holder, 103-First gripper, 104-Grip wheel device;

[0024] 201-Second mounting base plate, 202-Second gripper, 203-Cutting device;

[0025] 301-Fixed frame, 302-Slide rail, 303-Reinforcing plate, 304-Roller, 305-First clamping wheel, 306-Clamping roller, 307-Second clamping wheel, 308-First hydraulic cylinder, 309-Fixed rod. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0028] Combination Figures 1 to 5 The telescopic logging head shown is for easy branch removal, including a branch removal end 1, a cutting end 2 below the branch removal end 1, and the branch removal end 1 and the cutting end 2 are connected by a telescopic sliding device 3.

[0029] The branch end 1 includes a first mounting base plate 101. On one side of the first mounting base plate 101, a fixed knife holder 102, a first gripper 103 and a gripper wheel device 104 are arranged sequentially from top to bottom. The fixed knife holder 102, the first gripper 103 and the gripper wheel device 104 are all connected to the first mounting plate 101 by welding.

[0030] The cutting end 2 includes a second mounting base plate 201. A second gripper 202 and a cutting device 203 are arranged sequentially from top to bottom on one side of the second mounting base plate 201. The second gripper 202 and the cutting device 203 are both connected to the second mounting base plate 201 by welding.

[0031] The telescopic sliding device 3 includes a fixed frame 301, which is welded to the first mounting base plate 101. Slide rails 302 are longitudinally symmetrically arranged inside the fixed frame 301. The slide rails 302 are I-shaped and pass through the bottom end of the fixed frame 301, connecting to the second mounting base plate 201. A reinforcing plate 303 is provided between the ends of the two slide rails 302 and on the side of the second mounting plate 201, and is welded to the second mounting plate 201. Several rollers 304 are longitudinally arranged between the slide rails 302 and the fixed frame 301. The slide rail 302 has a plurality of first clamping wheels 305 longitudinally arranged on its upper surface. Clamping rollers 306 are arranged transversely between the first clamping wheels 305. The clamping rollers 306 are connected to the fixed frame 301 through rolling bearings. A second clamping wheel 307 is provided at the junction of the slide rail 302 and the fixed frame 301. A first hydraulic cylinder 308 is longitudinally arranged in the middle of the fixed frame 301. A fixing rod 309 is arranged transversely at one end of the first hydraulic cylinder 308. The fixing rod 309 passes through the fixed frame. The other end of the first hydraulic cylinder 308 passes through the fixed frame 301 and is connected to the reinforcing plate 303.

[0032] The fixed blade holder 102 has a protrusion on one edge for initial branch removal. The first gripper 103 includes a first connecting plate, with a second connecting plate below it. Fixed rods are located between both ends of the first and second connecting plates. Arc-shaped grippers are located on the outer diameter surfaces of both fixed rods, with blades on their inner surfaces. The arc-shaped grippers are connected to the fixed rods via rolling bearings. Second hydraulic cylinders are located between one end of each arc-shaped gripper and the fixed rod. One end of the second hydraulic cylinder is rotatably connected to the arc-shaped gripper, and the other end is rotatably connected to the fixed rod. Both the first and second connecting plates are connected to the mounting base plate. Through welding, the first gripper 103 and the second gripper 202 have the same structure, which can further remove branches from the tree trunk. The gripping wheel device 104 includes a third connecting plate, which is located below the second connecting plate. A fixing rod passes through the second connecting plate and extends to the third connecting plate. Double-layer arc-shaped grips are symmetrically arranged between the two ends of the third connecting plate and the second connecting plate. Each of the two double-layer arc-shaped grips has several rollers inside. The rollers are connected to the double-layer arc-shaped grips through roller shafts. The double-layer arc-shaped grips are rotatably connected to the fixing rod. A connecting shaft is provided between one end of each of the two double-layer arc-shaped grips. A third hydraulic cylinder is provided between the two connecting shafts. The two ends of the third hydraulic cylinder are respectively connected to... Two connecting shafts are rotatably connected, and a synchronous connecting rod is provided between the upper surfaces of the two double-layer arc-shaped grippers, which can guide and lock the tree. The cutting device 203 includes a saw box, a cutting motor is provided on the upper part of one end of the saw box, the drive shaft of the cutting motor passes through the saw box, a cutting saw is provided inside the saw box, the cutting saw and the cutting motor are connected by the drive shaft, a first fixed shaft is provided on the lower surface of the end of the cutting saw, a second fixed shaft is provided on the lower surface inside the saw box, a fourth hydraulic cylinder is provided between the first fixed shaft and the second fixed shaft, one end of the fourth hydraulic cylinder is rotatably connected to the first fixed shaft, and the other end of the fourth hydraulic cylinder is rotatably connected to the second fixed shaft, which can facilitate... To facilitate the cutting of tree trunks, the inner side of the arc-shaped gripper 202 is provided with anti-slip teeth, which can improve the gripping force of the second gripper 202 on the tree trunk. The upper surface of the first connecting plate, the second connecting plate and the third connecting plate are all provided with dust covers to prevent tree debris from entering the device and affecting the operation of the equipment. The synchronous linkage includes a first linkage, with a second linkage at both ends. One end of the second linkage is rotatably connected to the fixed rod, and the other end of the second linkage is rotatably connected to the connecting shaft. The rotatable connection between both ends of the first linkage and the second linkage can play a role in synchronizing the movement of the gripping wheel device 104, so that the gripping wheel can grip the tree trunk tightly.

[0033] Working principle: The present invention includes a branch removal end 1, a cutting end 2 below the branch removal end 1, and the branch removal end 1 and the cutting end 2 are connected by a telescopic sliding device 3;

[0034] The branch end 1 includes a first mounting base plate 101. On one side of the first mounting base plate 101, a fixed knife holder 102, a first gripper 103 and a gripper wheel device 104 are arranged sequentially from top to bottom. The fixed knife holder 102, the first gripper 103 and the gripper wheel device 104 are all connected to the first mounting plate 101 by welding.

[0035] The cutting end 2 includes a second mounting base plate 201. A second gripper 202 and a cutting device 203 are arranged sequentially from top to bottom on one side of the second mounting base plate 201. The second gripper 202 and the cutting device 203 are both connected to the second mounting base plate 201 by welding.

[0036] The telescopic sliding device 3 includes a fixed frame 301, which is welded to the first mounting base plate 101. Slide rails 302 are longitudinally symmetrically arranged inside the fixed frame 301. The slide rails 302 are I-shaped and pass through the bottom end of the fixed frame 301, connecting to the second mounting base plate 201. A reinforcing plate 303 is provided between the ends of the two slide rails 302 and on the side of the second mounting plate 201, and is welded to the second mounting plate 201. Several rollers 304 are longitudinally arranged between the slide rails 302 and the fixed frame 301. Several first clamping rollers 305 are longitudinally arranged on the upper surface of the slide rails 302. Clamping rollers 306 are transversely arranged between the first clamping rollers 305, and are connected to the fixed frame 301 via rolling bearings. A second clamping wheel 307 is provided at the junction of the fixed frame 301 and the fixed frame 302. A first hydraulic cylinder 308 is longitudinally provided in the middle of the fixed frame 301. A fixing rod 309 is provided laterally at one end of the first hydraulic cylinder 308. The fixing rod 309 passes through the fixed frame. The other end of the first hydraulic cylinder 308 passes through the fixed frame 301 and is connected to the reinforcing plate 303. One edge of the fixed knife holder 102 has a protrusion, which can initially remove branches. The first gripper 103 includes a first connecting plate. A second connecting plate is provided below the first connecting plate. A fixing rod is provided between both ends of the first connecting plate and the second connecting plate. An arc-shaped gripper is provided on the outer diameter surface of both fixing rods. A blade is provided on the inner side of the arc-shaped gripper. The arc-shaped gripper is connected to the fixing rod through a rolling bearing. A fixing rod is provided between one end of each arc-shaped gripper and the fixing rod. The second hydraulic cylinder has one end rotatably connected to the arc-shaped gripper, and the other end rotatably connected to the fixed rod. The first and second connecting plates are welded to the mounting base plate. The first gripper 103 and the second gripper 202 have the same structure and can further remove branches from the tree trunk. The wheel-holding device 104 includes a third connecting plate located below the second connecting plate. The fixed rod passes through the second connecting plate to the third connecting plate. Double-layered arc-shaped grippers are symmetrically arranged between the two ends of the third and second connecting plates. Each double-layered arc-shaped gripper contains several rollers, which are connected to the double-layered arc-shaped grippers via roller shafts. The double-layered arc-shaped grippers are rotatably connected to the fixed rod. A connecting shaft is provided between one end of each of the two double-layered arc-shaped grippers, and a third hydraulic cylinder is provided between the two connecting shafts. The hydraulic cylinders are rotatably connected at both ends to two connecting shafts. A synchronous connecting rod is provided between the upper surfaces of the two double-layered arc-shaped grippers, which can guide and lock the tree. The cutting device 203 includes a saw box, with a cutting motor located at one end. The cutting motor drive shaft passes through the saw box, and a cutting saw is located inside the saw box. The cutting saw and the cutting motor are connected via the drive shaft. A first fixed shaft is located on the lower surface of the cutting saw end, and a second fixed shaft is located on the lower surface inside the saw box. A fourth hydraulic cylinder is located between the first and second fixed shafts. One end of the fourth hydraulic cylinder is rotatably connected to the first fixed shaft, and the other end is rotatably connected to the second fixed shaft, facilitating the cutting of the tree trunk. Anti-slip teeth are provided on the inner surface of the arc-shaped grippers on the second gripper 202.The second gripper 202 can improve its gripping force on the tree trunk. The upper surfaces of the first, second, and third connecting plates are all equipped with dust covers to prevent tree debris from entering the device and affecting its operation. The synchronous linkage includes a first linkage with second linkages at both ends. One end of the second linkage is rotatably connected to a fixed rod, and the other end is rotatably connected to a connecting shaft. The rotatable connection of both ends of the first linkage to the second linkage synchronizes the movement of the gripping wheel device 104, enabling the gripping wheel to grip the tree trunk tightly. The first gripper 103 and the second gripper 202 can open and close via the action of the second hydraulic cylinder. The gripping wheel device 104 can also open and close synchronously via the action of the third hydraulic cylinder and the synchronous linkage. This allows the tree trunk to be gripped first, at which point the cutting motor drives the cutting saw to cut off the bottom of the trunk, allowing the trunk to be lifted. The second gripper 202 is equipped with anti-slip teeth. The tree trunk is firmly held in place. At this point, the first hydraulic cylinder pushes the branch-removing end 1 upwards. The blades on the fixed blade holder 102 and the first gripper 103 can remove branches from the trunk. The gripping wheel device 104 serves as a guide and rolling mechanism. After branch removal, the first hydraulic cylinder retracts, and through the cooperation of the slide rail 302, roller 304, first clamping wheel 305, second clamping wheel 307, and clamping roller 306, the cutting end 2 is precisely pulled upwards. At this time, the cutting saw is ejected by the action of the fourth hydraulic cylinder, cutting off the branched section of the tree. This process continues until the entire trunk has been branched. This not only saves manual felling, conserving a significant amount of labor and improving work efficiency, but also, because the invention removes branches by pulling the trunk, it is particularly effective for thicker or larger trunks. The branch removal is smooth, protecting the trees and equipment, and improving the safety of the operators.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A telescopic logging head for easy branch removal, characterized in that: It includes a branch removal end, and a cutting end is provided below the branch removal end. The branch removal end and the cutting end are connected by a telescopic sliding device. The branch removal end includes a first mounting base plate, and a fixed blade holder, a first gripper and a gripping wheel device are arranged sequentially from top to bottom on one side of the first mounting base plate. The fixed blade holder, the first gripper and the gripping wheel device are all connected to the first mounting base plate by welding. The cutting end includes a second mounting base plate. A second gripper and a cutting device are arranged sequentially from top to bottom on one side of the second mounting base plate. The second gripper and the cutting device are both connected to the second mounting base plate by welding. The telescopic sliding device includes a fixed frame, which is welded to the first mounting base plate. The fixed frame contains longitudinally symmetrical slide rails in an "I" shape, which pass through the bottom of the fixed frame and connect to the second mounting base plate. A reinforcing plate is provided between the ends of the two slide rails and on the side of the second mounting base plate, which is welded to the second mounting base plate. A plurality of rollers are longitudinally arranged between the slide rails and the fixed frame. A plurality of first clamping rollers are longitudinally arranged on the upper surface of the slide rails. Clamping rollers are transversely arranged between the first clamping rollers, and the clamping rollers are connected to the fixed frame via rolling bearings. A second clamping roller is provided at the junction of the slide rails and the fixed frame. A first hydraulic cylinder is longitudinally arranged in the middle of the fixed frame. A first fixing rod is transversely arranged at one end of the first hydraulic cylinder, passing through the fixed frame. The other end of the first hydraulic cylinder passes through the fixed frame and connects to the reinforcing plate. The first gripper includes a first connecting plate, a second connecting plate below the first connecting plate, and a second fixing rod between each end of the first connecting plate and the second connecting plate. An arc-shaped gripper is provided on the outer diameter surface of each of the two second fixing rods, and a blade is provided on the inner side of each arc-shaped gripper. The arc-shaped gripper is connected to the second fixing rod via a rolling bearing. A second hydraulic cylinder is provided between one end of each of the two arc-shaped grippers and the second fixing rod. One end of the second hydraulic cylinder is rotatably connected to the arc-shaped gripper, and the other end of the second hydraulic cylinder is rotatably connected to the second fixing rod. The first connecting plate and the second connecting plate are both welded to the mounting base plate. The first gripper and the second gripper have the same structure. The wheel-holding device includes a third connecting plate located below the second connecting plate. The second fixing rod passes through the second connecting plate and extends to the third connecting plate. Double-layer arc-shaped grips are symmetrically arranged between the two ends of the third connecting plate and the second connecting plate. Each of the two double-layer arc-shaped grips has several rollers inside. The rollers are connected to the double-layer arc-shaped grips via roller shafts. The double-layer arc-shaped grips are rotatably connected to the second fixing rod. A connecting shaft is provided between one end of each of the two double-layer arc-shaped grips. A third hydraulic cylinder is provided between the two connecting shafts. The two ends of the third hydraulic cylinder are rotatably connected to the two connecting shafts respectively. A synchronous connecting rod is provided between the upper surfaces of the two double-layer arc-shaped grips.

2. The telescopic logging head for easy branch removal according to claim 1, characterized in that: The fixed tool holder has a protrusion on one edge.

3. The telescopic logging head for easy branch removal according to claim 2, characterized in that: The cutting device includes a saw box, a cutting motor is provided above one end of the saw box, the drive shaft of the cutting motor passes through the saw box, a cutting saw is provided inside the saw box, the cutting saw is connected to the cutting motor through the drive shaft, a first fixed shaft is provided on the lower surface of the end of the cutting saw, a second fixed shaft is provided on the lower surface inside the saw box, a fourth hydraulic cylinder is provided between the first fixed shaft and the second fixed shaft, one end of the fourth hydraulic cylinder is rotatably connected to the first fixed shaft, and the other end of the fourth hydraulic cylinder is rotatably connected to the second fixed shaft.

4. A telescopic logging head for easy branch removal according to claim 3, characterized in that: The inner side of the arc-shaped gripper on the second gripper is provided with anti-slip teeth.

5. A telescopic logging head for easy branch removal according to claim 4, characterized in that: The upper surface of the first connecting plate, the second connecting plate and the third connecting plate are all provided with dust covers.

6. A telescopic logging head for easy branch removal according to claim 5, characterized in that: The synchronous linkage includes a first linkage, with a second linkage at both ends of the first linkage. One end of the second linkage is rotatably connected to the second fixed rod, and the other end of the second linkage is rotatably connected to the connecting shaft. Both ends of the first linkage are rotatably connected to the second linkage.

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