CN108718756B - Use method of double-stretching stroke type branch and leaf scissors suitable for gardens - Google Patents
Use method of double-stretching stroke type branch and leaf scissors suitable for gardens Download PDFInfo
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- CN108718756B CN108718756B CN201810318522.4A CN201810318522A CN108718756B CN 108718756 B CN108718756 B CN 108718756B CN 201810318522 A CN201810318522 A CN 201810318522A CN 108718756 B CN108718756 B CN 108718756B
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000005520 cutting process Methods 0.000 claims abstract description 40
- 238000010008 shearing Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 10
- 230000008602 contraction Effects 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000013016 damping Methods 0.000 description 2
- 238000013138 pruning Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G3/00—Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
- A01G3/08—Other tools for pruning, branching or delimbing standing trees
Abstract
The invention relates to a using method of a double-stretching stroke type branch and leaf shear suitable for gardens, which uses the double-stretching stroke type branch and leaf shear suitable for gardens and comprises a handheld shell, a low-load elastic tool, a heavy-load elastic tool and a shearing device; the using method comprises the following steps: step 1, adjusting the position; step 2, pre-clamping branches; step 3, cutting branches 5; and 4, resetting. The invention relates to a using method of a double-stretching stroke type branch and leaf shear suitable for gardens, which comprises the steps of cutting branches in advance through a cutting wheel disc, and driving a movable cross arm to move downwards by pulling an adjusting round rod downwards until the branches are sheared; the descending process of the round rod is adjusted into two steps, so that the function of better adapting to branch shearing is realized.
Description
Technical Field
The invention relates to the technical field of garden instruments, in particular to a using method of a double-stretching stroke type branch and leaf shear suitable for gardens.
Background
In the landscaping construction process, branches and leaves of trees need to be trimmed. The traditional branch and leaf scissors simply shear through the shearing stress of two hinged scissor arms, but the method is time-consuming and labor-consuming and has low efficiency.
The prior art scheme carries out automatic improvement to traditional scissors structure, sets up cutting runner or the supplementary cutting of chain saw on arbitrary scissors arm. However, in the cutting process, since the cutting speeds of the two scissor arms are not easy to control, the cutting wheel or the chain saw does not cut the branches and leaves in advance, but the scissor arms cut rapidly, so that the cutting wheel or the chain saw is stuck and cannot cut effectively.
Therefore, a branch and leaf scissors is needed to be designed, the closing process of the scissor arms is divided into two parts, the first part is the stage from preliminary closing of the scissor arms to preliminary contact with the branches and leaves, and the stage can be provided with smaller damping so as to facilitate quick operation; the second part is the process that the cutting rotating wheel cuts branches and leaves on one side and the scissor arm slowly cuts, and in the stage, in order to avoid the cutting rotating wheel being blocked, larger damping can be arranged, so that the whole process is slow and controllable.
Disclosure of Invention
In order to solve the technical problems in the background technology, the invention provides a double-stretching stroke type branch and leaf scissors suitable for gardens, branches are cut in advance through a cutting wheel disc, and then a movable cross arm is driven to move downwards by pulling an adjusting round rod downwards until the branches are cut; the descending process of the round rod is adjusted into two steps, so that the function of better adapting to branch shearing is realized.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a use method of a double-stretching stroke type branch and leaf shear suitable for gardens is characterized by comprising the following steps:
a double-stretching stroke type branch and leaf scissors suitable for gardens is used, and comprises a handheld shell, a low-load elastic tool, a heavy-load elastic tool and a shearing device;
the hand held housing includes:
the cross section of the rectangular rod body is rectangular;
the rectangular inner cavity is arranged on the upper half part of the rectangular rod body, the upper end of the rectangular inner cavity is provided with a circular upper opening, and the lower end of the rectangular inner cavity is provided with a circular lower opening;
the low-load ammunition tool is used for providing low elasticity, and comprises:
the first primary barrel comprises a first barrel cover which is arranged on the upper half part of the rectangular inner cavity in a sliding manner, a first cover hole which is arranged in the middle of the first barrel cover, a first bump which is arranged on the inner wall of the first cover hole, a first barrel wall which is arranged at the lower end of the first barrel cover, and a first limiting hole which is arranged on the side surface of the first barrel wall along the axial direction;
the first sub-cylinder is slidably inserted into the first cylinder wall, a first limiting block inserted into the first limiting hole is arranged at the upper end of the side wall of the first sub-cylinder, and a first concave ring is arranged at the lower edge of the outer wall of the first sub-cylinder;
the inner wall of the upper internal threaded pipe is uniformly provided with first convex rings inserted in the first concave rings in the circumferential direction, and the lower edge of the inner wall of the upper internal threaded pipe is also provided with a torque plug;
the upper external threaded pipe is in threaded connection with the inner wall of the upper internal threaded pipe and is sleeved on the first sub-cylinder, and an upper rectangular plate which is attached to the rectangular inner cavity and is limited to rotate is arranged on the upper edge of the upper external threaded pipe;
the first pressure spring is sleeved on the first cylinder wall, the upper end of the first pressure spring is abutted against the first cylinder cover, and the lower end of the first pressure spring is abutted against the upper rectangular plate;
under a normal state, the first pressure spring acts on the upper rectangular plate to drive the upper external threaded pipe, the upper internal threaded pipe and the first sub-cylinder to move downwards, so that the first limiting block is clamped at the lower end of the first limiting hole;
the heavy-duty bullet utensil is used for providing higher elasticity, the heavy-duty bullet utensil includes:
the second primary barrel comprises a second barrel cover which is arranged on the lower half part of the rectangular inner cavity in a sliding manner, a second cover hole which is arranged in the middle of the second barrel cover, a second barrel wall which is arranged at the lower end of the second barrel cover, and a second limiting hole which is axially arranged on the side surface of the second barrel wall;
the second sub-cylinder is slidably inserted into the second cylinder wall, a second limiting block inserted into a second limiting hole is arranged at the upper end of the side wall of the second sub-cylinder, and a second concave ring is arranged at the lower edge of the outer wall of the second sub-cylinder;
the inner wall of the lower internal thread pipe is uniformly provided with second convex rings inserted in the second concave rings in the circumferential direction, the lower end of the lower internal thread pipe is provided with an annular lower bottom, and the lower end of the annular lower bottom is provided with an adjusting cylinder penetrating through the circular lower opening;
the lower external threaded pipe is in threaded connection with the lower internal threaded pipe and is sleeved on the second sub-cylinder, and a lower rectangular plate which is attached to the rectangular inner cavity and is limited to rotate is arranged on the upper edge of the lower external threaded pipe;
the second pressure spring is sleeved on the second cylinder wall, the upper end of the first pressure spring is abutted against the second cylinder cover, and the lower end of the first pressure spring is abutted against the lower rectangular plate;
under a normal state, the second pressure spring acts on the lower rectangular plate to drive the lower external threaded pipe, the lower internal threaded pipe and the second sub-cylinder to move downwards, so that the second limiting block is clamped at the lower end of the second limiting hole;
the stiffness coefficient of the second pressure spring is not lower than five times of the stiffness coefficient of the first pressure spring;
the shearing apparatus includes:
the fixed cross arm is fixedly arranged above the front end face of the rectangular rod body, a cutting wheel disc driven by a motor is arranged on the fixed cross arm, and the motor is electrically connected with a power supply through a switch;
the adjusting round rod sequentially penetrates through the circular upper opening, the first cover hole, the first sub-cylinder, the second cover hole, the second sub-cylinder and the circular lower opening from top to bottom and then extends out to the rear end of the rectangular rod body, an annular transmission groove is formed in the adjusting round rod at the position corresponding to the first bump, a torque slot is axially formed in the adjusting round rod at the position corresponding to the torque plug, and an adjusting pull ring is arranged at the lower end of the adjusting round rod;
the movable cross arm is arranged at the upper end of the adjusting round rod, and the lower end face of the movable cross arm is provided with an accommodating groove for accommodating the cutting wheel disc;
the using method comprises the following steps:
the hand-held shell is held by hands and the position of the hand-held shell is adjusted, so that the tree branches are positioned between the fixed cross arm and the movable cross arm;
turning on a switch, and starting a motor to enable a cutting wheel disc to rotate;
under a normal state, the sum of the lengths of the low-load projectile apparatus and the heavy-load projectile apparatus in the vertical direction is equal to the length of the rectangular inner cavity;
the adjusting pull ring is grasped by a hand and the adjusting round rod is driven to move downwards quickly relative to the handheld shell;
the transmission groove acts on the first bump to drive the first female cylinder to overcome the acting force of the first pressure spring to move downwards until the first female cylinder abuts against the upper end face of the upper rectangular plate, and at the moment, the low-load projectile tool contracts to the shortest;
because the stiffness coefficient of the second pressure spring is not lower than five times of the stiffness coefficient of the first pressure spring, the contraction distance of the heavy-load projectile apparatus is smaller than that of the low-load projectile apparatus;
the movable cross arm descends along with the adjusting round rod until the cutting wheel disc stays at a position 5mm-50mm above the tree branch;
continuously grabbing the adjusting pull ring by hand to drive the adjusting round rod to move downwards relative to the handheld shell;
the transmission groove acts on the first bump to drive the low-load bullet and the second female cylinder to overcome the resistance of the second pressure spring to move downwards;
because the stiffness coefficient of the second pressure spring is not lower than five times of the stiffness coefficient of the first pressure spring, pulling the adjusting pull ring is more laborious relative to the step 2;
the movable cross arm continues to move downwards along with the adjusting round rod, and the branches are cut off by the cutting wheel disc;
and step 4, resetting:
and when the adjusting pull ring is loosened, the heavy-load elastic tool and the light-load elastic tool are relaxed to drive the adjusting round rod and the movable cross arm to reset.
Furthermore, the adjusting pull ring is a rectangular frame body.
The invention has the beneficial effects that:
the invention relates to a using method of a double-stretching stroke type branch and leaf shear suitable for gardens.
The invention relates to a using method of a double-stretching stroke type branch and leaf shear suitable for gardens, wherein the descending process of an adjusting round rod is divided into two steps, and the function of better adapting to branch shearing is realized:
in the branch pre-clamping stage, the low-load cartridge is contracted until the first primary barrel abuts against the upper end face of the upper rectangular plate, and at the moment, the low-load cartridge is contracted to be shortest; because the stiffness coefficient of the second pressure spring is not lower than five times of the stiffness coefficient of the first pressure spring, the contraction distance of the heavy-load projectile apparatus is smaller than that of the low-load projectile apparatus; in the pre-branch clamping stage, the contraction of the low-load elastic tool enables the adjusting round rod and the movable cross arm to descend rapidly until the cutting wheel disc stays at the position 5mm-50mm above the branches.
In the branch cutting stage, the low-load elastic tool cannot be contracted, and only the heavy-load elastic tool is contracted. Because the stiffness coefficient of the second pressure spring is at least five times that of the first pressure spring, the adjustment round rod is pulled downwards, and therefore the labor is wasted compared with the tree branch pre-clamping stage.
According to the using method of the double-stretching stroke type branch and leaf scissors suitable for gardens, the resistance mutation of the adjusting round rod is pulled to know in advance that the cutting wheel disc is about to cut branches, and the problem that the adjusting round rod is pulled down and the cross arm is moved quickly to cause the cutting wheel disc to cut into the branches quickly and be blocked is avoided; and great resistance itself also can slow down the speed that the user continues to pull down to a certain extent, just is fit for the required slow descending rhythm of cutting rim plate cutting branch this moment, reaches the effect of pressing from both sides the branch in advance fast and cutting the branch slowly.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a sectional view of an embodiment of the leaf shears.
Fig. 2 is a sectional view of an embodiment of the pruning shears.
Fig. 3 is a cross-sectional view of an embodiment of the leaf shears.
Fig. 4 is a sectional view taken along line a-a of fig. 1.
Fig. 5 is an enlarged schematic view of part B of fig. 2.
In the figure:
1. the handheld shell comprises a handheld shell, 11 a rectangular rod body, 12a rectangular inner cavity, 12a circular upper opening and 12b circular lower opening;
2. the low-load bullet comprises a low-load bullet, 21, a first female cylinder, 21a, a first cylinder cover, 21b, a first cover hole, 21c, a first bump, 21d, a first cylinder wall, 21e, a first limiting hole, 22, a first sub-cylinder, 22a, a first limiting block, 22b, a first concave ring, 23, an upper internal threaded pipe, 23a, a first concave ring, 23b, a torque plug, 24, an upper external threaded pipe, 24a, an upper rectangular plate and 25, a first pressure spring;
3. the heavy-duty bullet tool comprises a heavy-duty bullet tool, 31, a second female cylinder, 31a, a second cylinder cover, 31b, a second cover hole, 31c, a second cylinder wall, 31d, a second limiting hole, 32, a second secondary cylinder, 32a, a second limiting block, 32b, a second concave ring, 33, a lower internal threaded pipe, 33a, a second convex ring, 33b, an annular lower bottom, 33c, an adjusting cylinder, 34, a lower external threaded pipe, 34a, a lower rectangular plate and 35, and a second pressure spring;
4. the cutting device comprises a cutting device, 41, a fixed cross arm, 41a, a cutting wheel disc, 42, an adjusting round rod, 42a, a transmission groove, 42b, a torque slot, 42c, an adjusting pull ring and 43, a movable cross arm;
5. and (5) branch.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A use method of a double-stretching stroke type branch and leaf shear suitable for gardens is characterized by comprising the following steps:
a double-stretching stroke type branch and leaf scissors suitable for gardens is used, and comprises a handheld shell 1, a low-load elastic tool 2, a heavy-load elastic tool 3 and a shearing device 4;
the hand held housing 1 includes:
a rectangular rod body 11 having a rectangular cross section;
the rectangular inner cavity 12 is arranged at the upper half part of the rectangular rod body 11, the upper end of the rectangular inner cavity 12 is provided with a circular upper opening 12a, and the lower end of the rectangular inner cavity 12 is provided with a circular lower opening 12 b;
the low-load projectile 2 is used for providing low elastic force, and the low-load projectile 2 comprises:
the first female cylinder 21 comprises a first cylinder cover 21a slidably arranged at the upper half part of the rectangular inner cavity 12, a first cover hole 21b arranged at the middle part of the first cylinder cover 21a, a first convex block 21c arranged on the inner wall of the first cover hole 21b, a first cylinder wall 21d arranged at the lower end of the first cylinder cover 21a, and a first limiting hole 21e axially arranged on the side surface of the first cylinder wall 21 d;
the first sub-cylinder 22 is slidably inserted into the first cylinder wall 21d, a first limiting block 22a inserted into the first limiting hole 21e is arranged at the upper end of the side wall of the first sub-cylinder 22, and a first concave ring 22b is arranged at the lower edge of the outer wall of the first sub-cylinder 22;
the inner wall of the upper internal threaded pipe 23 is circumferentially and uniformly provided with first convex rings 23a inserted in the first concave rings 22b, and the lower edge of the inner wall of the upper internal threaded pipe 23 is also provided with a torque plug 23 b;
the upper external threaded pipe 24 is in threaded connection with the inner wall of the upper internal threaded pipe 23 and is sleeved on the first sub-cylinder 22, and an upper rectangular plate 24a which is attached to the rectangular inner cavity 12 and is further limited to rotate is arranged on the upper edge of the upper external threaded pipe 24;
the first pressure spring 25 is sleeved on the first cylinder wall 21d, the upper end of the first pressure spring 25 is abutted with the first cylinder cover 21a, and the lower end of the first pressure spring 25 is abutted with the upper rectangular plate 24 a;
under a normal state, the first pressure spring 25 acts on the upper rectangular plate 24a to drive the upper external threaded pipe 24, the upper internal threaded pipe 23 and the first sub-cylinder 22 to move downwards, so that the first limiting block 22a is clamped at the lower end of the first limiting hole 21 e;
the heavy-duty bullet tool 3 is used for providing a high elastic force, and the heavy-duty bullet tool 3 includes:
the second female cylinder 31 comprises a second cylinder cover 31a arranged at the lower half part of the rectangular inner cavity 12 in a sliding manner, a second cover hole 31b arranged at the middle part of the second cylinder cover 31a, a second cylinder wall 31c arranged at the lower end of the second cylinder cover 31a, and a second limit hole 31d arranged on the side surface of the second cylinder wall 31c along the axial direction;
the second sub-cylinder 32 is slidably inserted into the second cylinder wall 31c, a second limit block 32a inserted into the second limit hole 31d is arranged at the upper end of the side wall of the second sub-cylinder 32, and a second concave ring 32b is arranged at the lower edge of the outer wall of the second sub-cylinder 32;
a second convex ring 33a inserted into the second concave ring 32b is uniformly distributed on the inner wall of the lower internal threaded pipe 33 in the circumferential direction, an annular lower bottom 33b is arranged at the lower end of the lower internal threaded pipe 33, and an adjusting cylinder 33c penetrating through the circular lower opening 12b is arranged at the lower end of the annular lower bottom 33 b;
the lower external threaded pipe 34 is in threaded connection with the lower internal threaded pipe 33 and is sleeved on the second sub-cylinder 32, and a lower rectangular plate 34a which is attached to the rectangular inner cavity 12 and is limited to rotate is arranged on the upper edge of the lower external threaded pipe 34;
the second pressure spring 35 is sleeved on the second cylinder wall 31c, the upper end of the first pressure spring 25 is abutted against the second cylinder cover 31a, and the lower end of the first pressure spring is abutted against the lower rectangular plate 34 a;
under a normal state, the second pressure spring 35 acts on the lower rectangular plate 34a to drive the lower outer threaded pipe 34, the lower inner threaded pipe 33 and the second sub-cylinder 32 to move downwards, so that the second limiting block 32a is clamped at the lower end of the second limiting hole 31 d;
the stiffness coefficient of the second pressure spring 35 is not less than five times of the stiffness coefficient of the first pressure spring 25;
the shearing device 4 comprises:
the fixed cross arm 41 is fixedly arranged above the front end face of the rectangular rod body 11, a cutting wheel disc 41a driven by a motor is arranged on the fixed cross arm 41, and the motor is electrically connected with a power supply through a switch;
the adjusting round rod 42 sequentially penetrates through the circular upper opening 12a, the first cover hole 21b, the first sub-cylinder 22, the second cover hole 31b, the second sub-cylinder 32 and the circular lower opening 12b from top to bottom and then extends out to the rear end of the rectangular rod body 11, an annular transmission groove 42a is formed in the position, corresponding to the first bump 21c, of the adjusting round rod 42, a torque slot 42b is formed in the position, corresponding to the torque plug 23b, of the adjusting round rod 42 in the axial direction, and an adjusting pull ring 42c is arranged at the lower end of the adjusting round rod 42;
a movable cross arm 43 arranged at the upper end of the adjusting round rod 42, wherein the lower end surface of the movable cross arm 43 is provided with a containing groove for containing the cutting wheel disc 41 a;
the using method comprises the following steps:
holding the hand-held housing 1 and adjusting its position so that the branches 5 are located between the fixed crossbar 41 and the mobile crossbar 43;
turning on the switch, starting the motor to rotate the cutting wheel 41 a;
under a normal state, the sum of the lengths of the low-load projectile device 2 and the heavy-load projectile device 3 in the vertical direction is equal to the length of the rectangular inner cavity 12;
the adjusting pull ring 42c is grasped by hand and the adjusting round rod 42 is driven to move downwards rapidly relative to the handheld shell 1;
the transmission groove 42a acts on the first bump 21c to drive the first female cylinder 21 to move downwards against the action force of the first pressure spring 25 until the first female cylinder 21 abuts against the upper end face of the upper rectangular plate 24a, and at the moment, the low-load projectile apparatus 2 contracts to the shortest;
because the stiffness coefficient of the second pressure spring 35 is not lower than five times of the stiffness coefficient of the first pressure spring 25, the contraction distance of the heavy-load projectile apparatus 3 is smaller than that of the low-load projectile apparatus 2;
the movable cross arm 43 descends along with the adjusting round rod 42 until the cutting wheel disc 41a stays at the position 5mm-50mm above the branch 5;
the adjusting pull ring 42c is continuously grasped by hands, and the adjusting round rod 42 is driven to move downwards relative to the handheld shell 1;
the transmission groove 42a acts on the first bump 21c to drive the low-load projectile gear 2 and the second primary barrel 31 to overcome the resistance of the second pressure spring 35 to move downwards;
since the stiffness coefficient of the second compression spring 35 is not lower than five times of the stiffness coefficient of the first compression spring 25, pulling the adjusting pull ring 42c is more laborious compared with the step 2;
the movable cross arm 43 continues to descend along with the adjusting round rod 42, and the tree branches 5 are cut off by the cutting wheel disc 41 a;
and step 4, resetting:
and (3) loosening the adjusting pull ring 42c, and expanding the heavy-load bullet 3 and the light-load bullet 2 to drive the adjusting round rod 42 and the movable cross arm 43 to reset.
Further, the adjusting pull ring 42c is a rectangular frame.
The pruning shears can be pre-adjusted before being used, and the pre-adjusting method comprises the following steps:
the adjusting pull ring 42c is rotated to drive the adjusting round rod 42 to rotate, and the torque slot 42b acts on the torque plug 23b to drive the upper internal threaded pipe 23 to rotate;
the upper rectangular plate 24a and the upper external thread pipe 24 cannot rotate because the upper rectangular plate 24a is acted by the rectangular inner cavity 12;
the upper internal threaded pipe 23 drives the upper external threaded pipe 24 to move in the vertical direction;
adjusting the distance between the first cylinder wall 21d and the upper rectangular plate 24a under a normal state, namely adjusting the limit contraction stroke of the low-load projectile device 2;
rotating the part of the adjusting cylinder 33c exposed at the lower end of the rectangular rod body 11 to drive the lower internal threaded pipe 33 to rotate;
the lower rectangular plate 34a and the lower external thread pipe 34 cannot rotate because the lower rectangular plate 34a is acted by the rectangular inner cavity 12;
the lower internally threaded tube 33 drives the lower externally threaded tube 34 to move in the vertical direction;
and adjusting the distance between the lower end of the second cylinder wall 31c and the lower rectangular plate 34a under the normal state, namely adjusting the limit contraction stroke of the heavy-duty bullet device 3.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (2)
1. A use method of a double-stretching stroke type branch and leaf shear suitable for gardens is characterized by comprising the following steps:
a double-stretching stroke type branch and leaf scissors suitable for gardens is used, and comprises a handheld shell (1), a low-load elastic tool (2), a heavy-load elastic tool (3) and a shearing device (4);
the hand-held housing (1) comprises:
a rectangular rod body (11) having a rectangular cross section;
the rectangular inner cavity (12) is arranged at the upper half part of the rectangular rod body (11), the upper end of the rectangular inner cavity (12) is provided with a circular upper opening (12 a), and the lower end of the rectangular inner cavity (12) is provided with a circular lower opening (12 b);
the low-load bullet (2) is used for providing low elasticity, and the low-load bullet (2) comprises:
the first female cylinder (21) comprises a first cylinder cover (21 a) which is slidably arranged on the upper half part of the rectangular inner cavity (12), a first cover hole (21 b) which is arranged in the middle of the first cylinder cover (21 a), a first convex block (21 c) which is arranged on the inner wall of the first cover hole (21 b), a first cylinder wall (21 d) which is arranged at the lower end of the first cylinder cover (21 a), and a first limiting hole (21 e) which is axially arranged on the side surface of the first cylinder wall (21 d);
the first sub-cylinder (22) is slidably inserted into the first cylinder wall (21 d), a first limiting block (22 a) inserted into a first limiting hole (21 e) is arranged at the upper end of the side wall of the first sub-cylinder (22), and a first concave ring (22 b) is arranged on the lower edge of the outer wall of the first sub-cylinder (22);
the inner wall of the upper internal threaded pipe (23) is circumferentially and uniformly provided with first convex rings (23 a) inserted in the first concave rings (22 b), and the lower edge of the inner wall of the upper internal threaded pipe (23) is also provided with torque plugs (23 b);
the upper external threaded pipe (24) is in threaded connection with the inner wall of the upper internal threaded pipe (23) and is sleeved on the first sub-cylinder (22), and an upper rectangular plate (24 a) which is attached to the rectangular inner cavity (12) and is further limited to rotate is arranged on the upper edge of the upper external threaded pipe (24);
the first pressure spring (25) is sleeved on the first cylinder wall (21 d), the upper end of the first pressure spring (25) is abutted against the first cylinder cover (21 a), and the lower end of the first pressure spring (25) is abutted against the upper rectangular plate (24 a);
under a normal state, the first pressure spring (25) acts on the upper rectangular plate (24 a) to drive the upper external threaded pipe (24), the upper internal threaded pipe (23) and the first sub-cylinder (22) to move downwards, so that the first limiting block (22 a) is clamped at the lower end of the first limiting hole (21 e);
the heavy-load bullet tool (3) is used for providing high elasticity, and the heavy-load bullet tool (3) comprises:
the second female cylinder (31) comprises a second cylinder cover (31 a) which is slidably arranged at the lower half part of the rectangular inner cavity (12), a second cover hole (31 b) which is arranged at the middle part of the second cylinder cover (31 a), a second cylinder wall (31 c) which is arranged at the lower end of the second cylinder cover (31 a), and a second limiting hole (31 d) which is axially arranged at the side surface of the second cylinder wall (31 c);
the second sub-cylinder (32) is slidably inserted into the second cylinder wall (31 c), a second limiting block (32 a) inserted into a second limiting hole (31 d) is arranged at the upper end of the side wall of the second sub-cylinder (32), and a second concave ring (32 b) is arranged at the lower edge of the outer wall of the second sub-cylinder (32);
a second convex ring (33 a) inserted in the second concave ring (32 b) is circumferentially and uniformly distributed on the inner wall of the lower internal thread pipe (33), an annular lower bottom (33 b) is arranged at the lower end of the lower internal thread pipe (33), and an adjusting cylinder (33 c) penetrating through the circular lower opening (12 b) is arranged at the lower end of the annular lower bottom (33 b);
the lower external threaded pipe (34) is in threaded connection with the lower internal threaded pipe (33) and sleeved on the second sub-cylinder (32), and a lower rectangular plate (34 a) which is attached to the rectangular inner cavity (12) and is limited to rotate is arranged on the upper edge of the lower external threaded pipe (34);
the second pressure spring (35) is sleeved on the second cylinder wall (31 c), the upper end of the first pressure spring (25) is abutted against the second cylinder cover (31 a), and the lower end of the first pressure spring is abutted against the lower rectangular plate (34 a);
under a normal state, the second pressure spring (35) acts on the lower rectangular plate (34 a) to drive the lower external threaded pipe (34), the lower internal threaded pipe (33) and the second sub-cylinder (32) to move downwards, so that the second limiting block (32 a) is clamped at the lower end of the second limiting hole (31 d);
the stiffness coefficient of the second pressure spring (35) is not less than five times of the stiffness coefficient of the first pressure spring (25);
the shearing device (4) comprises:
the fixed cross arm (41) is fixedly arranged above the front end face of the rectangular rod body (11), a cutting wheel disc (41 a) driven by a motor is arranged on the fixed cross arm (41), and the motor is electrically connected with a power supply through a switch;
the adjusting round rod (42) sequentially penetrates through the circular upper opening (12 a), the first cover hole (21 b), the first sub-cylinder (22), the second cover hole (31 b), the second sub-cylinder (32) and the circular lower opening (12 b) from top to bottom and then extends out to the rear end of the rectangular rod body (11), an annular transmission groove (42 a) is formed in the position, corresponding to the first bump (21 c), of the adjusting round rod (42), a torque slot (42 b) which is axially arranged is formed in the position, corresponding to the torque plug (23 b), of the adjusting round rod (42), and an adjusting pull ring (42 c) is arranged at the lower end of the adjusting round rod (42);
the movable cross arm (43) is arranged at the upper end of the adjusting round rod (42), and the lower end face of the movable cross arm (43) is provided with a containing groove for containing the cutting wheel disc (41 a);
the using method comprises the following steps:
step 1, adjusting the position:
holding the hand-held housing (1) and adjusting the position thereof so that the branches (5) are located between the fixed cross arm (41) and the movable cross arm (43);
turning on a switch, starting a motor to rotate a cutting wheel disc (41 a);
under a normal state, the sum of the lengths of the low-load projectile (2) and the heavy-load projectile (3) in the vertical direction is equal to the length of the rectangular inner cavity (12);
step 2, pre-clamping branches (5):
the adjusting pull ring (42 c) is grasped by a hand and the adjusting round rod (42) is driven to move downwards and rapidly relative to the handheld shell (1);
the transmission groove (42 a) acts on the first bump (21 c) to drive the first female cylinder (21) to move downwards against the action force of the first pressure spring (25) until the first female cylinder (21) abuts against the upper end face of the upper rectangular plate (24 a), and at the moment, the low-load projectile apparatus (2) contracts to the shortest;
the stiffness coefficient of the second compression spring (35) is not lower than five times of the stiffness coefficient of the first compression spring (25), so that the contraction distance of the heavy-load bullet tool (3) is smaller than that of the low-load bullet tool (2);
the movable cross arm (43) descends along with the adjusting round rod (42) until the cutting wheel disc (41 a) stays at a position 5mm-50mm above the tree branch (5);
step 3, cutting the branches (5):
continuously grabbing the adjusting pull ring (42 c) by hand to drive the adjusting round rod (42) to move downwards relative to the handheld shell (1);
the transmission groove (42 a) acts on the first bump (21 c) to drive the low-load bullet (2) and the second primary cylinder (31) to overcome the resistance of the second pressure spring (35) to move downwards;
because the stiffness coefficient of the second pressure spring (35) is not lower than five times of the stiffness coefficient of the first pressure spring (25), pulling the adjusting pull ring (42 c) is more laborious compared with the step 2;
the movable cross arm (43) continues to move downwards along with the adjusting round rod (42), and the tree branches (5) are cut off by the cutting wheel disc (41 a);
and step 4, resetting:
and (3) loosening the adjusting pull ring (42 c), and expanding the heavy-load elastic tool (3) and the light-load elastic tool (2) to drive the adjusting round rod (42) and the movable cross arm (43) to reset.
2. The use method of the double-stretching stroke type branch and leaf scissors suitable for gardens as claimed in claim 1, wherein the method comprises the following steps: the adjusting pull ring (42 c) is a rectangular frame body.
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| CN201810318522.4A CN108718756B (en) | 2018-04-11 | 2018-04-11 | Use method of double-stretching stroke type branch and leaf scissors suitable for gardens |
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| CN108718756B true CN108718756B (en) | 2020-11-24 |
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| US4224739A (en) * | 1978-08-08 | 1980-09-30 | Frank Emblidge | Pruning tool with flexible headpole connection |
| GB2048751A (en) * | 1979-05-02 | 1980-12-17 | Fiskars Ab Oy | Pruning Device |
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| CN101536650A (en) * | 2009-04-20 | 2009-09-23 | 浙江快利工具有限公司 | High attitude shear |
| CN106665143A (en) * | 2016-12-14 | 2017-05-17 | 宁波鸿坤电器有限公司 | Pruner |
| CN206547412U (en) * | 2017-03-09 | 2017-10-13 | 广东电网有限责任公司清远供电局 | Gao Zhiju |
| CN107494001A (en) * | 2017-09-01 | 2017-12-22 | 安徽双鹿车业有限公司 | A kind of electric fruit tree scissors |
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2018
- 2018-04-11 CN CN201810318522.4A patent/CN108718756B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1099948A (en) * | 1965-08-27 | 1968-01-17 | New Draulics Inc | Hydraulically operated pruner |
| US4224739A (en) * | 1978-08-08 | 1980-09-30 | Frank Emblidge | Pruning tool with flexible headpole connection |
| GB2048751A (en) * | 1979-05-02 | 1980-12-17 | Fiskars Ab Oy | Pruning Device |
| FR2482660A1 (en) * | 1980-05-19 | 1981-11-20 | Juillet Hubert | Motor driven hand held secateurs - has pistol grip carrying cylinder with piston connected by piston rod to linkage attached to blades |
| CN101536650A (en) * | 2009-04-20 | 2009-09-23 | 浙江快利工具有限公司 | High attitude shear |
| CN106665143A (en) * | 2016-12-14 | 2017-05-17 | 宁波鸿坤电器有限公司 | Pruner |
| CN206547412U (en) * | 2017-03-09 | 2017-10-13 | 广东电网有限责任公司清远供电局 | Gao Zhiju |
| CN107494001A (en) * | 2017-09-01 | 2017-12-22 | 安徽双鹿车业有限公司 | A kind of electric fruit tree scissors |
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| Publication number | Publication date |
|---|---|
| CN108718756A (en) | 2018-11-02 |
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