CN109089601B

CN109089601B - Manual branch saw

Info

Publication number: CN109089601B
Application number: CN201811111253.0A
Authority: CN
Inventors: 丁乃祥; 其他发明人请求不公开姓名
Original assignee: Gaoqing Power Supply Company State Grid Shandong Electric Power Co
Current assignee: GAOQING POWER SUPPLY COMPANY, STATE GRID SHANDONG ELECTRIC POWER Co.
Priority date: 2018-09-22
Filing date: 2018-09-22
Publication date: 2020-10-13
Anticipated expiration: 2038-09-22
Also published as: CN109089601A

Abstract

The invention relates to a manual branch saw, which belongs to the field of machinery and comprises a lifting cylinder, wherein the cross section of the lifting cylinder is rectangular, a saw blade is arranged in the lifting cylinder, the lower part of the lifting cylinder is fixed and communicated with an extension cylinder, the lower part of the extension cylinder is fixed and communicated with a shell, two pulleys are arranged at the joint of the extension cylinder and the shell, a reel is arranged in the shell through a shaft, the lower part of the saw blade is vertical to the saw blade to fix a vertical pin, a pull rope and a draw rope are respectively and fixedly connected to the vertical pin, the draw rope is fixed on the left side of the reel through a fixing device after passing through the extension cylinder and bypassing the pulley on the left side, and the manual branch saw is manually.

Description

Manual branch saw

Technical Field

The invention relates to a manual branch saw, and belongs to the field of machinery.

Background

When pruning branches, climbing operation is needed, and the tool which is often used at present is a chain saw or a power saw, and sometimes a hand saw. Chain saw and electric saw weight are great, and the operation of ascending a height is inconvenient, also receives the restriction of oil or electricity simultaneously, and outdoor operations can't in time supply the energy. The handsaw is portable, convenient for ascending, but laborious. At present, tools specially used for cutting branches at high positions are also available, the main structure of the tool is that a cutting part of an original chain saw or an original electric saw is separated from a power part, and a transmission part is lengthened, most of the weight is moved to the lower part, the weight of the cutting part is reduced as much as possible, and the tool is convenient to lift, but still heavy and not suitable for long-time operation.

Disclosure of Invention

According to the defects in the prior art, the technical problems to be solved by the invention are as follows: provided is a manual branch saw, which is manually operated, is not limited by energy, is light in weight, and is suitable for long-time outdoor use.

The invention relates to a manual branch saw, which comprises a lifting cylinder, wherein the cross section of the lifting cylinder is rectangular, a saw blade is arranged in the lifting cylinder, the lower part of the lifting cylinder is fixed and communicated with an extension cylinder, the lower part of the extension cylinder is fixed and communicated with a shell, two pulleys are arranged at the joint of the extension cylinder and the shell, a reel is arranged in the shell in a shaft mode, the lower part of the saw blade is vertical to the saw blade and is fixed with a vertical pin, a pull rope and a pull rope are respectively and fixedly connected to the vertical pin, the pull rope is fixed on the left side of the reel through a fixing device after passing through the extension cylinder and bypassing the pulley on the left side, a winding roller is arranged on the inner wall of the upper part of the lifting cylinder and is parallel to the saw blade, the pull rope firstly bypasses the winding roller upwards and then passes.

Circumference sets up the recess on the winding roll, and the stay cord winding prevents that the stay cord from shifting in the recess, and the position that the winding roll left end corresponds the saw blade tooth sword is the ladder roll form, and the diameter at this position is less than the diameter of other positions of winding roll promptly. Because in order to prevent the saw blade from being blocked, the tooth edges on the saw blade are usually inclined towards two sides in a staggered manner, the saw blade is inevitably contacted with the winding roller, the stepped roller-shaped winding roller can avoid the contact of the tooth edges and the winding roller, and the unnecessary abrasion of the saw blade and the winding roller is avoided.

The tail end of the blade side of the saw blade is smooth and protrudes out of the plane of the blade, and when the saw blade moves, the blade side is abutted against the smooth part to be contacted with the lifting cylinder, so that the blade is prevented from being worn.

The place that corresponds saw blade back and side on a section of thick bamboo inner wall of lifting sets up the bead, and the bead can prevent saw blade and a section of thick bamboo direct contact of lifting and wearing and tearing.

Fixing device includes the nut, and the nut is fixed on the reel, and the nut fit bolt in, the bolt is tangent with the reel edge, and bolt tail end center pin department fixes the swing handle, and the spacing section of thick bamboo is fixed to the bolt front end, sets up the stopper in the spacing section of thick bamboo, stopper and stay cord or drawstring tail end fixed connection, and spacing section of thick bamboo open end closes up, and the opening size of closing up department is less than the size of stopper, avoids the stopper to deviate from in the spacing section of thick bamboo. The bolt is rotated and fed in the nut, so that the tightness of the drawing rope and the pull rope can be adjusted.

The upper end of the lifting cylinder is provided with a stop lever, so that the shell can be pushed unconsciously when an operator shakes the crank, the saw blade is moved upwards and separated from the branch, and the stop lever is directly supported on the lower part of the branch, so that the saw blade can be prevented from moving upwards.

The handle is fixed on the shell, and the axis of the handle is parallel to that of the crank, so that the handle is convenient to grasp. When in operation, one hand grasps the handle and the other hand shakes the crank.

The shell is fixedly provided with a hook and a shoulder strap, the hook is hung on the waistband, and the shoulder strap is used for being carried on the shoulder to reduce the fatigue of the hand.

The lower part of the shell is a smooth arc surface, so that the human body cannot be hurt when the shell is in contact with the abdomen of the human body, the shell needs to be rotated up and down when the shell works, the arc surface can facilitate the shell to rotate around the contact, and the human body cannot be hurt because the arc surface has edges and corners like a plane.

For the saw blade with thinner thickness, the crease is folded in the working direction, the crease plays the role of a reinforcing rib, and the crease can not protrude out of the working area of the tooth blade to prevent the saw blade from being blocked in the cutting seam.

The working principle and the process are as follows:

the handle is held by one hand, the lifting cylinder is lifted to the branch to be cut, so that the saw blade is obliquely pressed on the branch, then the handle is rotated in a reciprocating manner and is rotated upwards, the reel is driven by the handle to rotate leftwards, the draw rope is further pulled, the saw blade is pulled downwards by the draw rope, the pull rope is pulled by the saw blade when the saw blade moves downwards, and the fixing position of the reel and the pull rope just rotates towards the moving direction of the pull rope, so that the action of drawing the saw is completed; the crank is reversed to complete the stretching and sawing action, and the working principle is consistent with the above. The pulley can keep apart the draw-off rope and stay cord with other parts, avoids wearing and tearing, and the vertical pin can be blockked by the winding roller, avoids taking out the saw blade.

Compared with the prior art, the invention has the beneficial effects that:

the manual branch saw is manually operated, is not limited by energy sources, is light in weight, and is suitable for being used outdoors for a long time.

Drawings

FIG. 1 is a schematic view of an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the embodiment A-A shown in FIG. 1;

FIG. 3 is a partial enlarged view of the embodiment B shown in FIG. 1.

In the figure: 1. a saw blade; 2. a stop lever; 3. a rib; 4. a winding roller; 5. pulling a rope; 6. drawing the rope; 7. a lifting cylinder; 8. an extension cylinder; 9. a pulley; 10. a reel; 11. hooking; 12. a handle; 13. a crank; 14. a harness; 15. a housing; 16. a nut; 17. a bolt; 18. turning a handle; 19. a limiting block; 20. a limiting cylinder.

Detailed Description

Embodiments of the invention are further described below with reference to the accompanying drawings:

as shown in figures 1-3, the manual branch saw of the invention comprises a lifting cylinder 7, the cross section of the lifting cylinder 7 is rectangular, a saw blade 1 is arranged in the lifting cylinder 7, the lower part of the lifting cylinder 7 is fixed and communicated with an extension cylinder 8, the lower part of the extension cylinder 8 is fixed and communicated with a shell 15, two pulleys 9 are arranged at the joint of the extension cylinder 8 and the shell 15, a winding wheel 10 is arranged in the shell 15, the lower part of the saw blade 1 is vertical to the saw blade 1 and is fixed with a vertical pin, a pull rope 5 and a pull rope 6 are respectively fixed on the vertical pin, the pull rope 6 passes through the extension cylinder 8, bypasses the pulley 9 at the left side and is fixed at the left side of the winding wheel 10 through a fixing device, a winding roller 4 is arranged on the inner wall at the upper part of the lifting cylinder 7, the winding roller 4 is parallel to the saw blade 1, the pull rope 5 firstly upwards bypasses the winding roller 4 and then passes through the extension, a crank 13 is fixed to the reel 10.

Circumference sets up the recess on the

winding roller

4, and 5 twines in the recess of stay cord prevent that stay cord 5 from shifting, and the position that 4 left ends of winding roller correspond 1 tooth sword of saw blade is the step roll form, and the diameter in this position is less than the diameter of 4 other positions of winding roller promptly. Since the teeth of the saw blade 1 are inclined to both sides alternately in order to prevent the saw blade 1 from being stuck, the saw blade 1 inevitably contacts the winding roller 4, and the stepped roller-shaped winding roller 4 can prevent the teeth from contacting the winding roller 4, thereby preventing the saw blade 1 and the winding roller 4 from being unnecessarily worn.

The tail end of the blade side of the saw blade 1 is smooth and protrudes out of the plane of the blade, when the saw blade 1 moves, the blade side is contacted with the lifting cylinder 7 by abutting against the smooth part, and the abrasion of the blade is avoided.

Set up bead 3 in the place that corresponds the back of saw blade 1 and side on a 7 inner walls of the section of thick bamboo that elevates, bead 3 can prevent that saw blade 1 from with a 7 direct contact of the section of thick bamboo that elevates wearing and tearing.

Fixing device includes nut 16, and nut 16 fixes on

reel

10, and 16 internal fit bolts 17 of nut, bolt 17 are tangent with reel 10 edge, and bolt 17 tail end center pin department fixes the swing handle 18, and the fixed spacing section of thick bamboo 20 of bolt 17 front end sets up stopper 19 in the spacing section of thick bamboo 20, stopper 19 and stay

cord

5 or 6 tail end fixed connection of drawstring, and 20 open ends of a spacing section of thick bamboo close up, and the opening size of closing up department is less than stopper 19's size, avoids stopper 19 to deviate from in the spacing section of thick bamboo 20. The bolt 17 is rotated and the bolt 17 is fed in the nut 16, so that the tightness of the draw-off rope 6 and the draw-off rope 5 can be adjusted.

The upper end of the lifting cylinder 7 is provided with the stop lever 2, when an operator shakes the crank 13, the shell 15 can be pushed unconsciously, so that the saw blade 1 moves upwards and is separated from the tree branches, and the stop lever 2 directly supports the lower parts of the tree branches, thereby preventing the saw blade 1 from moving upwards.

The handle 12 is fixed on the shell 15, and the axis of the handle 12 is parallel to the axis of the crank 13, so that the handle is convenient to grasp. In operation, the handle 12 is grasped with one hand and the crank 13 is shaken with the other hand.

The hook 11 and the shoulder strap 14 are fixed on the shell 15, the hook 11 is used for hanging on a waist belt, and the shoulder strap 14 is used for being carried on the shoulder to reduce the fatigue of hands.

The lower part of the shell 15 is a smooth arc surface, so that the human body cannot be hurt when the shell is in contact with the abdomen of the human body, the shell 15 needs to be rotated up and down when the shell is in work, the arc surface can facilitate the shell 15 to rotate around a contact point, and the human body cannot be hurt because the arc surface has edges and corners like a plane.

For the saw blade 1 with thinner thickness, the crease is folded in the working direction, the crease plays the role of a reinforcing rib, and the crease can not protrude out of the working area of the tooth blade to prevent the saw blade from being blocked in the cutting seam.

The working principle and the process are as follows:

the handle 12 is held by one hand, the crank 13 is held by the other hand, the lifting cylinder 7 is lifted to the branch to be cut, the saw blade 1 is pressed on the branch in an inclined mode, then the crank 13 is rotated in a reciprocating mode, the crank 13 is rotated upwards, the winding wheel 10 is driven by the crank 13 to rotate leftwards, the drawing rope 6 is further pulled, the saw blade 1 is pulled downwards by the drawing rope 6, the pull rope 5 is pulled by the saw blade 1 when the saw blade 1 moves downwards, and the fixing position of the winding wheel 10 and the pull rope 5 just rotates towards the moving direction of the pull rope 5 to finish the sawing action; the crank handle 13 is reversed to complete the stretching and sawing action, and the working principle is consistent with the above. The pulley 9 can isolate the draw-off rope 6 and the draw-off rope 5 from other parts, so that abrasion is avoided, the vertical pin can be blocked by the winding roller 4, and the saw blade 1 is prevented from being drawn out.

Claims

1. A manual branch saw which is characterized in that: comprises a lifting cylinder (7), the cross section of the lifting cylinder (7) is rectangular, a saw blade (1) is arranged in the lifting cylinder (7), the lower part of the lifting cylinder (7) is fixed and communicated with an extension cylinder (8), the lower part of the extension cylinder (8) is fixed and communicated with a shell (15), two pulleys (9) are arranged at the joint of the extension cylinder (8) and the shell (15), a reel (10) is arranged in the shell (15), the lower part of the saw blade (1) is vertical to the fixed vertical pin of the saw blade (1), a pull rope (5) and a pull rope (6) are respectively and fixedly connected on the vertical pin, the pull rope (6) passes through the extension cylinder (8), bypasses the pulley (9) at the left side and then is fixed at the left side of the reel (10) through a fixing device, a winding roller (4) is arranged on the inner wall at the upper part of the lifting cylinder (7), the winding roller (4) is parallel to the saw blade (1), the pull rope (5) firstly upwards, and the crank handle (13) is fixed on the rotating shaft of the reel (10) after bypassing the pulley (9) on the right side through a fixing device.

2. The manual branch saw of claim 1 wherein: the circumference sets up the recess on winding roller (4), and stay cord (5) winding is in the recess, prevents that stay cord (5) from shifting, and the position that winding roller (4) left end corresponds saw blade (1) tooth sword is the ladder roller form, and the diameter in this position is less than the diameter of winding roller (4) other positions promptly, owing to in order to prevent that saw blade (1) from being blocked, the tooth sword on saw blade (1) is crisscross slope to both sides usually.

3. The manual branch saw of claim 2 wherein: the tail end of the blade side of the saw blade (1) is smooth and protrudes out of the plane of the blade side, and when the saw blade (1) moves, the blade side is abutted against the smooth part and is contacted with the lifting cylinder (7).

4. The manual branch saw of claim 3 wherein: the inner wall of the lifting cylinder (7) is provided with a convex edge (3) corresponding to the back and the side of the saw blade (1).

5. The manual branch saw of claim 4 wherein: fixing device includes nut (16), nut (16) are fixed on reel (10), nut (16) fit-in bolt (17), bolt (17) are tangent with reel (10) edge, bolt (17) tail end center pin department fixes spiral handle (18), fixed spacing section of thick bamboo (20) of bolt (17) front end, set up stopper (19) in spacing section of thick bamboo (20), stopper (19) and stay cord (5) or drawstring (6) tail end fixed connection, spacing section of thick bamboo (20) open end binding off, the size that the opening size of binding off department is less than stopper (19), avoid stopper (19) to deviate from in spacing section of thick bamboo (20), swivel bolt (17), bolt (17) feed in nut (16), and then can adjust the elasticity degree of drawstring (6) and stay cord (5).

6. The manual branch saw of claim 5 wherein: the upper end of the lifting cylinder (7) is provided with a stop lever (2), when an operator shakes the crank (13), the shell (15) can be pushed unconsciously, so that the saw blade (1) moves upwards and is separated from branches, and the stop lever (2) directly abuts against the lower parts of the branches.

7. The manual branch saw of claim 6 wherein: the handle (12) is fixed on the shell (15), and the axis of the handle (12) is parallel to the axis of the crank (13).

8. The manual branch saw of claim 7 wherein: the shell (15) is fixed with a hook (11) and a back belt (14), the hook (11) is hung on the waistband, and the back belt (14) is used for being carried on the shoulder.

9. The manual branch saw of claim 8 wherein: the lower part of the shell (15) is a smooth cambered surface.