Adjustable chain saw grab hook

Abstract

The utility model belongs to the technical field of sawmill grapnels, and particularly relates to an adjustable chain saw grapnel which comprises a grapnel mechanism and a sawmilling mechanism, and the sawmilling mechanism is installed at the right end of the grapnel mechanism. When the adjustable chain saw grab hook is used for cutting an obliquely placed tree, a wood sawing machine is started to the position of the tree, then a grab hook mechanism is driven to move to the position of the tree, then an output shaft of a motor is started to rotate, and a circular shaft and a connecting column are made to rotate through transmission of a worm and a rotating rod; after the grapnel mechanism at the lower end rotates to be perpendicular to the horizontal angle of the tree, a first oil cylinder and a second oil cylinder are started, a left connecting plate and a right connecting plate are pushed to rotate, meanwhile, a rotating block rotates around a rotating shaft, and when the grapnel mechanism at the lower end is driven to rotate to the inclination removing angle which is the same as the tree inclination angle, the rotating block rotates; then the grabbing hook mechanism is driven to move to the outer end of the tree, the tree is grabbed, and finally the wood sawing mechanism is started to cut the grabbed tree.

Description

TECHNICAL FIELD

[0001] The utility model relates to sawmill grab hook technical field, concretely is adjustable oil saw grab hook. BACKGROUND

[0002] When sawing trees, it is necessary to use a grab hook to fix the tree, and then saw the tree through the sawing mechanism.

[0003] The existing grab hook is adjusted and fixed by manually adjusting two groups of grab hooks according to the size of the tree. Since the width of a tree gradually increases from top to bottom, manual adjustment is required repeatedly, which is inconvenient to use and reduces work efficiency. Therefore, we propose a grab hook for a log harvester with a sawing mechanism.

[0004] As disclosed in Chinese patent CN215912770U, a grab hook for a log harvester with a sawing mechanism, a connecting rod is pulled by an oil cylinder, and a fixed rod is fixed between the two groups of inner hook connecting plates. The inner hook connecting plate is pulled by the fixed rod, the inner hook seamless pipe is pulled by the inner hook connecting plate, the inner hook plate is driven by the inner hook seamless pipe to open, the outer hook connecting plate is pushed by the connecting rod, the outer hook plate is driven by the outer hook connecting plate to open, the tree is covered, the oil cylinder is controlled to shrink, the outer hook plate and the inner hook plate are driven to clamp the tree, and the tree is processed through the cooperation of the sawing mechanism. It saves labor, improves work efficiency and work quality.

[0005] However, the grab hook for the log harvester cannot be adjusted to different angles, so it cannot smoothly grab the trees that are inclined against the wall after felling.

[0006] Therefore, we urgently need to provide an oil saw grab hook with adjustable grabbing angle. INVENTION CONTENTS

[0007] The utility model aims at providing an adjustable oil saw grab hook to solve the problem that the grab hook for the log harvester cannot be adjusted to different angles, so it cannot smoothly grab the trees that are inclined against the wall after felling.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an adjustable oil saw grab hook, comprising a grab hook mechanism and a sawing mechanism, the sawing mechanism is installed at the right end of the grab hook mechanism, and the upper end of the grab hook mechanism is provided with an adjusting mechanism.

[0009] The adjusting mechanism comprises a rotating block mounted on the upper end of the grappling hook mechanism, the inner upper end of the rotating block is connected with a rotating shaft, the outer left side of the upper end of the rotating block is fixedly connected with a left connecting plate, the upper side of the left connecting plate is connected with a first oil cylinder, the outer right side of the upper end of the rotating block is fixedly connected with a right connecting plate, the upper side of the right connecting plate is connected with a second oil cylinder, the upper ends of the first oil cylinder and the second oil cylinder are connected with a connecting frame, and the upper end of the connecting frame is connected with a rotating unit.

[0010] Further improvement lies in that the rotating unit comprises a connecting column fixedly connected to the upper side of the connecting frame, the outer upper end of the connecting column is connected with a sleeve frame, the outer upper end of the connecting column is fixedly connected with a limiting ring, the inner side of the sleeve frame is fixedly connected with a fixed ring at the right front end, the inner side of the fixed ring is mounted with a motor, the rear end of the output shaft of the motor is fixedly connected with a worm, the rear end of the worm is fixedly connected with a rotating rod, a circular shaft is welded at the upper middle position of the connecting column, and the output shaft upper end of the circular shaft is fixedly connected with a worm wheel.

[0011] Further improvement lies in that the inner upper end of the rotating block is provided with a rotating hole at the middle position, the front and rear sides of the rotating shaft are fixedly connected with the front and rear ends of the inner side of the connecting frame, the outer side of the rotating shaft is rotationally connected with the inner side of the rotating hole, and the front and rear sides of the rotating block are slidingly connected with the front and rear ends of the inner side of the connecting frame, so that the rotating block can only rotate around the outer side of the rotating shaft of the inner side of the connecting frame.

[0012] Further improvement lies in that the upper side of the left connecting plate is hinged with the lower end of the output shaft of the first oil cylinder, the upper end of the first oil cylinder is hinged with the left side of the top end of the inner side of the connecting frame, the upper side of the right connecting plate is hinged with the lower end of the output shaft of the second oil cylinder, and the upper end of the second oil cylinder is hinged with the right side of the top end of the inner side of the connecting frame, so that when the first oil cylinder and the second oil cylinder are started, the output shaft of the first oil cylinder is extended, and at the same time the output shaft of the second oil cylinder is retracted, the left connecting plate and the right connecting plate can be pushed to rotate, and at the same time the rotating block rotates to the right around the rotating shaft.

[0013] Further improvement lies in that the inner lower end of the sleeve frame is provided with an annular groove, the outer upper end of the connecting column is rotationally connected with the inner lower end of the sleeve frame, and the outer side of the limiting ring is slidingly connected with the inner side of the annular groove, so that when the connecting column rotates relative to the sleeve frame, the limiting ring located on the outer surface of the connecting column slides along the inner side of the annular groove, so that the connecting column and the sleeve frame cannot move relative to each other in the vertical direction.

[0014] Further improvement lies in that the inner rear right end of the sleeve frame is provided with a circular hole, and the rear outer side of the rotating rod is rotationally connected with the inner side of the circular hole, so that when the motor is started and the output shaft thereof rotates to drive the worm to rotate, the rear end of the rotating rod connected with the worm rotates in the inner side of the circular hole.

[0015] Further improvement lies in that the worm and the worm wheel are engaged, so that when the output shaft of the starting motor rotates to drive the worm to rotate, the worm wheel is driven to rotate, and the circular shaft drives the connecting column at the lower end to rotate.

[0016] In summary, the application discloses an adjustable chainsaw grab hook.

[0017] The first oil cylinder and the second oil cylinder are started, the output shaft of the first oil cylinder is extended, the output shaft of the second oil cylinder is retracted, the left connecting plate and the right connecting plate are driven to rotate, and the rotating block rotates rightwards around the rotating shaft; similarly, the output shaft of the first oil cylinder is retracted, the output shaft of the second oil cylinder is extended, and the rotating block rotates leftwards around the rotating shaft, so that the grab hook mechanism at the lower end is driven to rotate to different inclination angles, so that the grab hook mechanism is adjusted to the same inclination angle of the tree when the tree is placed obliquely, and the tree placed obliquely is smoothly grabbed.

[0018] Further, the motor is started to drive the connecting column to rotate through the worm and the worm wheel, so that the grab hook mechanism at the lower end rotates, the grab hook mechanism is rotated to a suitable grabbing angle according to the angle of the tree placed in the horizontal direction, and the tree is smoothly grabbed, so that the tree grabbing work is more convenient and fast. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the overall structure of the adjusting mechanism of the utility model;

[0021] Figure 3 It is a schematic diagram of the internal structure of the connecting frame of the utility model;

[0022] Figure 4 It is a schematic diagram of the internal structure of the sleeve frame of the utility model.

[0023] In the drawing: 1, grab hook mechanism; 2, sawing mechanism; 301, rotating block; 302, rotating shaft; 303, left connecting plate; 304, first oil cylinder; 305, right connecting plate; 306, second oil cylinder; 307, connecting frame; 401, connecting column; 402, sleeve frame; 403, limiting ring; 404, fixed ring; 405, motor; 406, worm; 407, rotating rod; 408, circular shaft; 409, worm wheel. DETAILED DESCRIPTION

[0024] Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] Please refer to Figures 1-4 The utility model provides a technical scheme: an adjustable chainsaw grab hook, including grab hook mechanism 1 and sawing mechanism 2, sawing mechanism 2 installs in the right -hand member of grab hook mechanism 1, and the upper end of grab hook mechanism 1 is provided with adjusting mechanism.

[0026] Adjusting mechanism includes the rotating block 301 of installing in the upper end of grab hook mechanism 1, and the inside upper end of rotating block 301 is connected with the rotating shaft 302, and the left fixedly connected with left connecting plate 303 of rotating block 301 upper end outside, and the upper side of left connecting plate 303 is connected with first oil cylinder 304, and the right fixedly connected with right connecting plate 305 of rotating block 301 upper end outside, and the upper side of right connecting plate 305 is connected with second oil cylinder 306, and the upper end of first oil cylinder 304 and second oil cylinder 306 is connected with connecting frame 307, and the middle position of rotating block 301 inside upper end is set with rotating hole, and the front and back two sides of rotating shaft 302 are fixedly connected with the front and back two ends of connecting frame 307 inside lower side, and the outside of rotating shaft 302 is rotatably connected with the inside of rotating hole, and the front and back two sides of rotating block 301 are slidably connected with the front and back two ends of connecting frame 307 inside, so that rotating block 301 can only rotate around the outside of rotating shaft 302 inside connecting frame 307.

[0027] The upper side of left connecting plate 303 is hinged with the lower end of the output shaft of first oil cylinder 304, the upper end of first oil cylinder 304 is hinged with the left of the top end of connecting frame 307 inside, the upper side of right connecting plate 305 is hinged with the lower end of the output shaft of second oil cylinder 306, and the upper end of second oil cylinder 306 is hinged with the right of the top end of connecting frame 307 inside, so that when starting first oil cylinder 304 and second oil cylinder 306, the output shaft of first oil cylinder 304 is stretched out, and at the same time, the output shaft of second oil cylinder 306 is retracted, the left connecting plate 303 and the right connecting plate 305 can be pushed to rotate, and at the same time, the rotating block 301 rotates right around the rotating shaft 302, and similarly, when the output shaft of first oil cylinder 304 is retracted and the output shaft of second oil cylinder 306 is stretched out, the rotating block 301 can be driven to rotate left around the rotating shaft 302, and then through the adjusting mode, the grab hook mechanism 1 at the lower end can be driven to rotate to different inclination angles, so as to facilitate the grabbing of the trees placed at an inclination, and the grab hook mechanism 1 is also adjusted to the same angle as the trees, that is, the trees can be smoothly grabbed.

[0028] The upper end of the connecting frame 307 is connected with a rotating unit, the rotating unit comprises a connecting column 401 fixedly connected to the upper side of the connecting frame 307, a sleeve frame 402 connected to the outer side upper end of the connecting column 401, a limiting ring 403 fixedly connected to the outer side upper end of the connecting column 401, a ring-shaped groove is arranged on the inner side lower end of the sleeve frame 402, the outer side upper end of the connecting column 401 is rotationally connected with the inner side lower end of the sleeve frame 402, and the outer side of the limiting ring 403 is slidingly connected with the inner side of the ring-shaped groove, so that when the connecting column 401 rotates relative to the sleeve frame 402, the limiting ring 403 located on the outer surface of the connecting column 401 slides along the inner side of the ring-shaped groove, so that the connecting column 401 and the sleeve frame 402 cannot move relative to each other in the vertical direction.

[0029] The fixed ring 404 is fixedly connected to the inner side of the sleeve frame 402, the motor 405 is installed on the inner side of the fixed ring 404, the output shaft rear end of the motor 405 is fixedly connected with the worm 406, the rear end of the worm 406 is fixedly connected with the rotating rod 407, the rear end of the rotating rod 407 is rotationally connected with the inner side of the circular hole, and the rear end of the rotating rod 407 is rotationally connected with the inner side of the circular hole.

[0030] The circular shaft 408 is welded to the upper side of the connecting column 401, the output shaft upper end of the circular shaft 408 is fixedly connected with the worm gear 409, the worm 406 and the worm gear 409 are engaged, so that when the output shaft of the motor 405 is started to drive the worm 406 to rotate, the worm gear 409 is driven to rotate, the circular shaft 408 is driven to rotate, the connecting column 401 at the lower end is driven to rotate, and the claw mechanism 1 at the lower end is rotated, so that the claw mechanism 1 is rotated to the appropriate grabbing angle for grabbing according to the angle of the horizontal direction in which the tree is placed, so that the sawmill is not needed to be moved to be perpendicular to the tree, and the tree can be smoothly grabbed, so that the grabbing work of the tree is more convenient and fast.

[0031] Working principle: when cutting the tree which is placed in an inclined manner, firstly, the sawing machine is started to the tree, then the hook mechanism 1 is driven to move to the tree, then the motor 405 is started, the output shaft of the motor 405 rotates, the rotation is transmitted to the worm 406 and the rotating rod 407, so that the round shaft 408 and the connecting column 401 rotate, until the hook mechanism 1 at the lower end rotates to be perpendicular to the tree, then the first oil cylinder 304 and the second oil cylinder 306 are started, the left connecting plate 303 and the right connecting plate 305 are pushed to rotate, at the same time, the rotating block 301 rotates around the rotating shaft 302, until the hook mechanism 1 at the lower end rotates to the same angle as the inclined tree, then the hook mechanism 1 is driven to move to the outer end of the tree, the tree is grabbed, finally, the sawing mechanism 2 is started to cut the grabbed tree.

[0032] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

Claims

1. An adjustable chainsaw hook, comprising a hook mechanism (1) and a sawing mechanism (2), wherein the sawing mechanism (2) is mounted on the right end of the hook mechanism (1), characterized in that: An adjustment mechanism is provided at the upper end of the hook mechanism (1); The adjustment mechanism includes a rotating block (301) installed on the upper end of the hook mechanism (1). The upper end of the rotating block (301) is connected to a rotating shaft (302). A left connecting plate (303) is fixedly connected to the left side of the upper end of the rotating block (301). A first oil cylinder (304) is connected to the upper side of the left connecting plate (303). A right connecting plate (305) is fixedly connected to the right side of the upper end of the rotating block (301). A second oil cylinder (306) is connected to the upper side of the right connecting plate (305). A connecting frame (307) is connected to the upper end of the first oil cylinder (304) and the second oil cylinder (306). A rotating unit is connected to the upper end of the connecting frame (307).

2. The adjustable chainsaw hook according to claim 1, characterized in that: The rotating unit includes a connecting column (401) fixedly connected to the upper side of the connecting frame (307). A sleeve frame (402) is connected to the upper outer side of the connecting column (401). A limit ring (403) is fixedly connected to the upper outer side of the connecting column (401). A fixing ring (404) is fixedly connected to the right side of the front end inside the sleeve frame (402). A motor (405) is installed on the inner side of the fixing ring (404). A worm gear (406) is fixedly connected to the rear end of the output shaft of the motor (405). A rotating rod (407) is fixedly connected to the rear end of the worm gear (406). A round shaft (408) is welded to the middle position on the upper side of the connecting column (401). A worm wheel (409) is fixedly connected to the upper end of the output shaft of the round shaft (408).

3. The adjustable chainsaw hook according to claim 1, characterized in that: A rotating hole is provided at the middle position of the upper part of the rotating block (301). The front and rear sides of the rotating shaft (302) are fixedly connected to the front and rear ends of the inner side of the connecting frame (307). The outer side of the rotating shaft (302) is rotatably connected to the inner side of the rotating hole. The front and rear sides of the rotating block (301) are slidably connected to the front and rear ends of the inner side of the connecting frame (307).

4. An adjustable chainsaw hook according to claim 1, characterized in that: The upper side of the left connecting plate (303) is hinged to the lower end of the output shaft of the first oil cylinder (304), the upper end of the first oil cylinder (304) is hinged to the left side of the inner top of the connecting frame (307), the upper side of the right connecting plate (305) is hinged to the lower end of the output shaft of the second oil cylinder (306), and the upper end of the second oil cylinder (306) is hinged to the right side of the inner top of the connecting frame (307).

5. An adjustable chainsaw hook according to claim 2, characterized in that: The lower inner side of the sleeve frame (402) is provided with an annular groove, the outer side of the upper end of the connecting column (401) is rotatably connected to the lower inner side of the sleeve frame (402), and the outer side of the limiting ring (403) is slidably connected to the inner side of the annular groove.

6. An adjustable chainsaw hook according to claim 2, characterized in that: A circular hole is provided on the right side of the rear end of the sleeve (402), and the outer side of the rear end of the rotating rod (407) is rotatably connected to the inner side of the circular hole.

7. An adjustable chainsaw hook according to claim 2, characterized in that: The worm (406) and worm wheel (409) mesh.

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