CN205614121U - Labor -saving bolt cutter - Google Patents
Labor -saving bolt cutter Download PDFInfo
- Publication number
- CN205614121U CN205614121U CN201620460224.5U CN201620460224U CN205614121U CN 205614121 U CN205614121 U CN 205614121U CN 201620460224 U CN201620460224 U CN 201620460224U CN 205614121 U CN205614121 U CN 205614121U
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- Prior art keywords
- hole
- arm
- joint arm
- labor
- cutter head
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Abstract
The utility model provides a labor -saving bolt cutter, including the tool bit, ally oneself with arm and handle, the tool bit is connected with the upper end that allies oneself with the arm, the handle is connected with the lower extreme that allies oneself with the arm, it includes left -wing federation's arm to ally oneself with the arm, the first right side allies oneself with the arm and the second right side allies oneself with the arm, the upper end of left -wing federation's arm is equipped with the left tool bit connecting hole that is connected with left tool bit from a left side to the right side in proper order, first hole and second hole, the lower extreme of left -wing federation's arm is connected with the handle, the right tool bit connecting hole that the first right upper end that allies oneself with the arm was equipped with the third hole and was connected with right tool bit, bolted connection between first hole and the third hole, the lower extreme that the first right side allies oneself with the arm is equipped with the slot hole, the upper end that the second right side allies oneself with the arm is equipped with the fourth hole, bolted connection between fourth hole and the second hole, the middle part that the second right side allies oneself with the arm is equipped with the round pin shaft hole, through the round pin hub connection between round pin shaft hole and the slot hole, the round pin axle can be followed the slot hole and slided, the lower extreme that the second right side allies oneself with the arm is connected with the handle. The utility model discloses simple structure, laborsaving effect is obvious, is the scope of cuting in -process power 64 of traditional bolt cutter 92%.
Description
Technical field
This utility model belongs to hand-operated tools field, especially relates to a kind of labor-saving bolt cutter.
Background technology
Bolt clipper, is a kind of instrument for cutting off metal wire rod, bar etc..The cutter head of bolt clipper is by high duty alloy steel
Becoming, have high hardness and toughness, can cut off the material that hardness is higher, its cutting edge is sharp, wear-resisting, and shearing resistance is little, uses height
The firm bolt of intensity, coordinates stop nut, all through special thermal treatment.
Bolt clipper is mainly made up of cutter head, joint arm and handle, and cutter head and joint arm are connected with each other by screw, and handle is arranged
In the end of joint arm, two cutter heads are movably connected by two clamping plate by bolt, and two joint arms are mutual also by screw
Connect.Its operation principle is: when needing to shear object, opening two handles and joint arm, two cutter heads the most and then open, by object
Putting between the cutting edge of two cutter heads, the most firmly close, two cutter heads the most and then close up, until being cut off by object.By
In said structure, although joint arm has certain leverage, it is possible to reach labour-saving function, but what bolt clipper can reach
Shearing force is directly proportional to the length of handle.When bar is very hard or diameter is the biggest, the power needed for shearing is the biggest, long-time work
The labor intensity made is very big, and existing traditional bolt clipper the most all exists this defect.
Application number: 200910047543.8 disclose a kind of labor-saving bolt cutter, including be made up of left caliper and right caliper body
Caliper, the jaw being made up of upper jaw and lower jaw, the handle being made up of upper handle and lower handle, lever, guide rail, wedge, lead
Groove, push button, tension spring, stage clip, return spring and caging bolt.This bolt clipper can cut the most continuously, it is achieved that singlehanded behaviour
Make, have simultaneously lightweight, volume is little, labour-saving advantage.
Application number: 201510725175.3 disclose a kind of folding bolt clipper, are made up of cutter head, joint arm and handle, cutter head
Being connected with each other by screw with joint arm, handle is arranged on the end of joint arm, and two clamping plate are by bolt by two cutter head activities even
Being connected together, two joint arms are connected with each other also by screw, and joint arm includes front joint arm and rear joint arm, and rear joint arm is hinged on front joint arm
On, the front end face of described rear joint arm is provided with latch, after latch is movably arranged in rear joint arm, and the front end of latch is stretched out
The front end face of joint arm, is provided with, in the rear end face of described front joint arm, the pin hole matched with latch.It uses spring and latch
Mode realize the locking between front joint arm and rear joint arm, and coordinating by the rear end face of latch and front joint arm, it is achieved that
Autopatching between front joint arm and rear joint arm and locking, simple in construction, folding convenient.
Utility model content
The purpose of this utility model is to provide a kind of reasonable in design, simple in construction, low cost, easily manufacture, easy to use, province
The obvious labor-saving bolt cutter of power effect.
The technical solution of the utility model is: labor-saving bolt cutter, and including cutter head, joint arm and handle, cutter head is upper with joint arm
End is connected, and handle is connected with the lower end of joint arm, and described joint arm includes Left-wing Federation's arm, the first right joint arm and the second right joint arm, institute
The upper end stating Left-wing Federation's arm is sequentially provided with left cutter head connecting hole, the first hole and the second hole being connected with left cutter head from left to right, left
The lower end of joint arm is connected with handle, and the upper end of the first right joint arm is provided with the 3rd hole and the right cutter head being connected with right cutter head is connected
Hole, between the first hole with the 3rd hole, bolt is connected, and the lower end of the first right joint arm is provided with elongated hole, and the upper end of the second right joint arm is provided with
Four holes, between the 4th hole and the second hole, bolt is connected, and the middle part of the second right joint arm is provided with pin shaft hole, logical between pin shaft hole and elongated hole
Crossing bearing pin to connect, bearing pin can slide along elongated hole, and the lower end of the second right joint arm is connected with handle.
When shearing bar, force and left handle and right handles end respectively, drive Left-wing Federation's arm and the first right joint arm, second
Right joint arm rotates, and Left-wing Federation's arm and the first right joint arm axle in Left-wing Federation's arm the first hole rotates；Second right joint arm is around Left-wing Federation's arm the 3rd hole
Interior axle rotates；Second right joint arm pin shaft hole slided in the first right joint arm lower end elongated hole by bearing pin drive the first right joint arm around
In Left-wing Federation's arm the first hole, axle rotates, until cutting off bar.In shear history, left grip portion rotation angle range be 45 to
3 °, right handles part rotation angle range is 90 to 3 °.Opening procedure is with shear history antithesis.In above-mentioned motor process,
First right link arm and the second right link arm axle with left link arm diverse location respectively is connected, and the first right link arm and the second right link arm
Connected by pin slide, here it is effort-saving mechanism of the present utility model.
Setting left side handle part stress respectively as F0, the arm of force is L0；Right handles part stress is F, and the arm of force is L；Second
Right joint arm the 4th hole site stress is F1, and the arm of force is L1；First long hole site, right joint arm lower end stress is F2, and the arm of force is L2；Power
The angle of F1, F2 is α.According to the interaction principle of power, set left side handle part and maintain static, only analyze dextral handle portion
Give power state.
Set the rotating torque shearing bar handle position required input as M0=F0*LO
The input rotating torque that the design handle position produces is: M=F*L
According to lever principle: M1=M, i.e. F1*L1=F*L (1)
The rotating torque shearing workpiece output is: M2=F2*L2
The required condition met cut off by workpiece: M0=M=M2, i.e. FO*L0=F*L=F2*L2
F0*L0=F1*L1=F2*L2 (2) is obtained by (1)
F2=F1* │ cos α │ (3) is obtained by the force analysis figure of Fig. 8
F0*L0=F1* │ cos α │ * L2 is drawn by (2), (3)
∴ F1=F0*L0/L2* │ cos α │ (4)
F*L=F0*L0*L1/L2* │ cos α │ is obtained by (1), (4)
∴ F=F0*L0*L1/L*L2* │ cos α │
Setting L0, L, L1 according to different size and be different definite value, mutual relation is set as:
L=(0.93-0.97) * L0
∴ F=F0*L0*L1/ (0.93-0.97) * L0*L2* │ cos α │
=(1.03-1.07) * F0*L1/L2* │ cos α │
Wherein L2 is variable, and along with pliers opening amount size variation, α angle changes, and the size of L2 changes the most therewith, α angle
Spending the biggest, L1/L2 ratio is the biggest, and α angle is the least, and L1/L2 ratio is the least.
Limit the excursion of L2 as between (1.3-1.6) * L1, limit the excursion of α as-15 ° to 30 °, i.e. │ cos α
│ value is 0.87-1.
Take ultimate value respectively to calculate, as α=30 degree, L2=1.3L1, when taking F=1.07*F0*L1/L2* │ cos α │, F=
1.07*F0*L1/1.3*L1*0.87=0.95*F0
As α=0 degree, L2=1.6L1, when taking F=1.03*F0*L1/L2* │ cos α │,
F=1.03*F0*L1/1.6*L1*1=0.64*F0
So it is change that the design interrupts line tweezer labor-saving effect in shear history, power is in the range of tradition bolt clipper
Between 64-92%.
Preferably, described left cutter head connecting hole and right cutter head connecting hole are symmetricly set on the both sides of labor-saving bolt cutter center line,
Described first hole is positioned on the center line of labor-saving bolt cutter, and described second hole is positioned on the right of the center line of labor-saving bolt cutter.
Described second hole is positioned at the lower right in the first hole, and described second hole is positioned at the lower left of right cutter head connecting hole.
Distance between first hole and pin shaft hole is equal to 1.3-1.6 times of second hole spacing with pin shaft hole.
First hole, the 4th hole and bearing pin constitute a triangle, along with bearing pin slides along elongated hole, and the folder with bearing pin as summit
Angle excursion is-15 ° to 30 °.
The width of described elongated hole closes with the diameter compatible of bearing pin.
Described Left-wing Federation arm includes two parallel planes, and two parallel planes are arranged on the upper end of Left-wing Federation's arm, put down for two
The lower end of the plane of row is connected, and left cutter head connecting hole, the first hole and the second hole are separately positioned in two parallel planes, left
3rd hole of cutter head lower end and the first right joint arm is respectively provided with between two planes.
Described first right joint arm includes that two parallel planes and a mid-plane, two parallel planes are arranged on first right side
The upper right side of joint arm, two parallel plane lower-left ends are connected with mid-plane, right cutter head connecting hole be arranged on two parallel
In plane, the 3rd hole and elongated hole are arranged in mid-plane, and the lower end of right cutter head is arranged between two parallel planes.
Described second right joint arm includes two parallel planes and mid-plane, and mid-plane is arranged in the second right joint arm
End, two plane-parallel upper ends are connected with the lower end of mid-plane, and two plane-parallel lower ends are connected, and the 4th hole sets
Putting in mid-plane, pin shaft hole is arranged on two parallel planes, the 4th hole between two planes of Left-wing Federation's arm, first
The mid-plane of right joint arm is arranged between two parallel planes of the second right joint arm.
Described cutter head also includes that left cutter head and right cutter head are movably connected in one by bolt by two pressing plates, two pressing plates
Rise.
This utility model has the advantage that with good effect: this utility model labor-saving bolt cutter is reasonable in design, structure is tight
Gathering, easy to use, labor-saving effect is obvious, has simple in construction, is convenient to process and mount, and it is excellent that processing cost is low, production efficiency is high etc.
Point.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model labor-saving bolt cutter
Fig. 2 is Left-wing Federation's arm front view of this utility model labor-saving bolt cutter
Fig. 3 is Left-wing Federation's arm side view of this utility model labor-saving bolt cutter
Fig. 4 is the first right joint arm front view of this utility model labor-saving bolt cutter
Fig. 5 is the first right joint arm side view of this utility model labor-saving bolt cutter
Fig. 6 is the second right joint arm front view of this utility model labor-saving bolt cutter
Fig. 7 is the second right joint arm side view of this utility model labor-saving bolt cutter
Fig. 8 is the force state force analysis schematic diagram of this utility model labor-saving bolt cutter
In figure:
1, cutter head 2, Left-wing Federation's arm 3, first right joint arm the 4, second right joint arm 5, handle
11, left cutter head 12, right cutter head 13, pressing plate 21, left cutter head connecting hole the 22, first hole
23, the second hole 32, hole the 31, the 3rd, right cutter head connecting hole 33, elongated hole 34, bearing pin
41, the 4th hole 42, pin shaft hole
Detailed description of the invention
As it is shown in figure 1, this utility model labor-saving bolt cutter, including cutter head 1, joint arm and handle 5, cutter head 1 is upper with joint arm
End is connected, and handle 5 is connected with the lower end of joint arm, and joint arm includes Left-wing Federation's arm the 2, first right joint arm 3 and the second right joint arm 4, left
The upper end of joint arm 2 is sequentially provided with left cutter head connecting hole the 21, first hole 22 and the second hole being connected with left cutter head 11 from left to right
23, the lower end of Left-wing Federation's arm 2 is connected with handle 5, and the upper end of the first right joint arm 3 is provided with the 3rd hole 31 and is connected with right cutter head 12
Right cutter head connecting hole 32, between the first hole 22 and the 3rd hole 31, bolt is connected, and the lower end of the first right joint arm 3 is provided with elongated hole 33,
The upper end of the second right joint arm 4 is provided with the 4th hole 41, and between the 4th hole 41 with the second hole 23, bolt is connected, in the second right joint arm 4
Portion is provided with pin shaft hole 42, is connected by bearing pin 34 between pin shaft hole 42 with elongated hole 33, and bearing pin 34 can slide along elongated hole 33, and second is right
The lower end of joint arm 4 is connected with handle 5.
When shearing bar, force and left handle and right handles end respectively, drive Left-wing Federation arm 2 and the first right joint arm 3, the
Two right joint arms 4 rotate, and Left-wing Federation's arm 2 and the first right joint arm 3 axle in Left-wing Federation's arm 1 first hole 22 rotates；Second right joint arm 4 is around the Left-wing Federation
In arm 2 the 3rd hole 31, axle rotates；Second right joint arm 4 pin shaft hole 42 is slided in the first right joint arm 3 lower end elongated hole 33 by bearing pin 34
Move and drive the first right joint arm 3 axle in Left-wing Federation's arm 2 first hole 22 to rotate, until cutting off bar.In shear history, left handle
Part rotation angle range is 45 to 3 °, and right handles part rotation angle range is 90 to 3 °.Opening procedure is with shear history just
On the contrary.In above-mentioned motor process, the first right link arm 3 with the second right link arm 4 respectively axle with left link arm 2 diverse location be connected,
And the first right link arm 3 is slidably connected by bearing pin 34 with the second right link arm 4.
Preferably, left cutter head connecting hole 21 and right cutter head connecting hole 32 are symmetricly set on the both sides of labor-saving bolt cutter center line,
First hole 22 is positioned on the center line of labor-saving bolt cutter, and the second hole 23 is positioned on the right of the center line of labor-saving bolt cutter.
Further, the second hole 23 is positioned at the lower right in the first hole 22, and the second hole 22 is positioned at a left side for right cutter head connecting hole 32
Lower section.
Distance between first hole 22 and pin shaft hole 42 is equal to the 1.3-1.6 in the second hole 23 with the spacing of pin shaft hole 42
Times.
First hole 41, hole the 22, the 4th and bearing pin 34 constitute a triangle, along with bearing pin 34 slides along elongated hole 33, with bearing pin
34 is that the variable angle scope on summit is-15 ° to 30 °.
The width of elongated hole 33 closes with the diameter compatible of bearing pin 34.
Left-wing Federation's arm 2 includes two parallel planes, and two parallel planes are arranged on the upper end of Left-wing Federation's arm 2, and two parallel
The lower end of plane be connected, left cutter head connecting hole the 21, first hole 22 is separately positioned on two parallel planes with the second hole 23
On, the 3rd hole 31 of left cutter head 11 lower end and the first right joint arm 3 is respectively provided with between two planes.
Further, the first right joint arm 3 includes two parallel planes and a mid-plane, and two parallel planes are arranged on
The upper right side of the first right joint arm 3, two parallel plane lower-left ends are connected with mid-plane, and right cutter head connecting hole 32 is arranged on two
In individual parallel plane, the 3rd hole 31 and elongated hole 33 are arranged in mid-plane, the lower end of right cutter head 12 be arranged on two parallel
Between plane.
Second right joint arm 4 includes two parallel planes and mid-plane, and mid-plane is arranged on the second right joint arm 4 upper end,
Two plane-parallel upper ends are connected with the lower end of mid-plane, and two plane-parallel lower ends are connected, and the 4th hole 41 sets
Putting in mid-plane, pin shaft hole 42 is arranged on two parallel planes, the 4th hole 41 be positioned at Left-wing Federation's arm 2 two planes it
Between, the mid-plane of the first right joint arm 4 is arranged between two parallel planes of the second right joint arm 4.
Cutter head 1 can also include that two clamping plate 13, two clamping plate 13 pass through bolt by movable to left cutter head 11 and right cutter head 12
Link together.
The work process of this example: when shearing bar, force and the end of left handle with right handles, drive the Left-wing Federation respectively
Arm 2 rotates with first right joint arm the 3, second right joint arm 4, and Left-wing Federation's arm 2 and the first right joint arm 3 be axle rotation in Left-wing Federation's arm 2 first hole 22
Turn；Second right joint arm 3 axle in Left-wing Federation's arm 2 the 3rd hole 23 rotates；Second right joint arm 4 pin shaft hole 42 is right first by bearing pin 34
Slide in joint arm 3 lower end elongated hole 33 and drive the first right joint arm 3 axle in Left-wing Federation's arm 2 first hole 22 to rotate, until cutting off bar.
Above an embodiment of the present utility model is described in detail, but described content is the most of the present utility model
Preferred embodiment, it is impossible to be considered for limiting practical range of the present utility model.All made according to this utility model application range
Impartial change and improvement etc., within all should still belonging to patent covering scope of the present utility model.
Claims (9)
1. labor-saving bolt cutter, including cutter head, joint arm and handle, cutter head is connected with the upper end of joint arm, handle and the lower end of joint arm
It is connected, it is characterised in that: described joint arm includes Left-wing Federation's arm, the first right joint arm and the second right joint arm, the upper end of described Left-wing Federation arm
It is sequentially provided with left cutter head connecting hole, the first hole and the second hole being connected with left cutter head, the lower end of Left-wing Federation's arm and hands from left to right
Handle is connected, and the upper end of the first right joint arm is provided with the 3rd hole and the right cutter head connecting hole being connected with right cutter head, the first hole and the
Between three holes, bolt connects, and the lower end of the first right joint arm is provided with elongated hole, and the upper end of the second right joint arm is provided with the 4th hole, the 4th hole with
Between second hole, bolt connects, and the middle part of the second right joint arm is provided with pin shaft hole, is connected by bearing pin between pin shaft hole with elongated hole, pin
Axle can slide along elongated hole, and the lower end of the second right joint arm is connected with handle.
Labor-saving bolt cutter the most according to claim 1, it is characterised in that: described left cutter head connecting hole and right cutter head connecting hole
Being symmetricly set on the both sides of labor-saving bolt cutter center line, described first hole is positioned on the center line of labor-saving bolt cutter, described second position, hole
On the right of the center line of labor-saving bolt cutter.
Labor-saving bolt cutter the most according to claim 2, it is characterised in that: described second hole is positioned at the lower right in the first hole,
Described second hole is positioned at the lower left of right cutter head connecting hole.
Labor-saving bolt cutter the most according to claim 3, it is characterised in that: the distance between the first hole and pin shaft hole is equal to the
1.3-1.6 times of the spacing of two holes and pin shaft hole.
Labor-saving bolt cutter the most according to claim 4, it is characterised in that: the first hole, the 4th hole and bearing pin constitute one three
Dihedral, along with bearing pin slides along elongated hole, the variable angle scope with bearing pin as summit is-15 ° to 30 °.
Labor-saving bolt cutter the most according to claim 5, it is characterised in that: the width of described elongated hole and the diameter compatible of bearing pin
Close.
7. according to the labor-saving bolt cutter described in claim 1-6 any one, it is characterised in that: described Left-wing Federation arm includes that two are put down
The plane of row, two parallel planes are arranged on the upper end of Left-wing Federation's arm, and the lower end of two parallel planes is connected, and left cutter head is even
Connect hole, the first hole and the second hole to be separately positioned in two parallel planes, left cutter head lower end and the 3rd hole of the first right joint arm
It is respectively provided with between two planes.
Labor-saving bolt cutter the most according to claim 6, it is characterised in that: described first right joint arm includes two parallel planes
With a mid-plane, two parallel planes are arranged on the upper right side of the first right joint arm, and two parallel plane lower-left ends are with middle
Plane is connected, and right cutter head connecting hole is arranged in two parallel planes, and the 3rd hole and elongated hole are arranged in mid-plane, right
The lower end of cutter head is arranged between two parallel planes.
Labor-saving bolt cutter the most according to claim 7, it is characterised in that: described second right joint arm includes two parallel planes
And mid-plane, mid-plane is arranged on the second right joint arm upper end, the lower end phase of two plane-parallel upper ends and mid-plane
Connecting, two plane-parallel lower ends are connected, and the 4th hole is arranged in mid-plane, and pin shaft hole is arranged on two parallel planes
On, the 4th hole is between two planes of Left-wing Federation's arm, and the mid-plane of the first right joint arm is arranged on two of the second right joint arm
Between parallel plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620460224.5U CN205614121U (en) | 2016-05-18 | 2016-05-18 | Labor -saving bolt cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620460224.5U CN205614121U (en) | 2016-05-18 | 2016-05-18 | Labor -saving bolt cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205614121U true CN205614121U (en) | 2016-10-05 |
Family
ID=57024763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620460224.5U Expired - Fee Related CN205614121U (en) | 2016-05-18 | 2016-05-18 | Labor -saving bolt cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205614121U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105834509A (en) * | 2016-05-18 | 2016-08-10 | 威海市威力高档工具有限公司 | Labor-saved bolt cutter |
-
2016
- 2016-05-18 CN CN201620460224.5U patent/CN205614121U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105834509A (en) * | 2016-05-18 | 2016-08-10 | 威海市威力高档工具有限公司 | Labor-saved bolt cutter |
| WO2017197545A1 (en) * | 2016-05-18 | 2017-11-23 | 威海市威力高档工具有限公司 | Labour-saving bolt cutter |
| CN105834509B (en) * | 2016-05-18 | 2018-06-05 | 威海市威力高档工具有限公司 | Labor-saving bolt cutter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161005 Termination date: 20200518 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |