CN201823848U - Reinforcing bar shears - Google Patents
Reinforcing bar shears Download PDFInfo
- Publication number
- CN201823848U CN201823848U CN2010202666743U CN201020266674U CN201823848U CN 201823848 U CN201823848 U CN 201823848U CN 2010202666743 U CN2010202666743 U CN 2010202666743U CN 201020266674 U CN201020266674 U CN 201020266674U CN 201823848 U CN201823848 U CN 201823848U
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- CN
- China
- Prior art keywords
- force application
- application rod
- cutter head
- knife rest
- tool rest
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses reinforcing bar shears, which comprise a tool rest, a tool apron, a plurality of tool bits, two force application rods, two short rods, a beam and a central lead screw shaft. The tool rest is provided with an 'F'-shaped opening; a pair of parallel tool bits is arranged in the opening; one of the parallel tool bits is directly arranged on the tool rest while the other one is arranged on the tool apron; both the tool rest and the beam are provided with coaxial central holes; the central lead screw shaft fixedly connected with the tool apron penetrates through the central hole of the tool rest; the tool rest, one force application rod, one short rod, the beam, the other short rod, the other force application rod and the tool rest are sequentially hinged by pins into closed double four-bar linkage boosting mechanisms employing the central lead screw shaft as a symmetry axis; the ratio of the distance between two pin holes on each force application rod to the overall length of each force application rod ranges from 0.1 to 0.3; and the ratio of the length of each short rod to the length of each force application rod ranges from 0.1 to 0.15. The reinforcing bar shears have the advantages of reasonable structure, simple process, fine boosting effect, wide service range, low service cost, prolonged service life and the like.
Description
Technical field
The utility model relates to a kind of hand-operated tools, but especially relates to a kind of powerful reinforced shear of shear reinforcement.
Background technology
Existing general reinforced shear in use, in order when shearing, to make full use of the angle that maximum shear stress need be put into reinforcing bar two edges of a knife, after so repeatedly using, damage easily, the edge of a knife is local blunt herein herein, and whole cutter head just can not use, also just almost scrapped, and tiltedly the edge of a knife is inhomogeneous to action of steel bars power, and reinforcing bar is had the power of extrapolation, so also is difficult to make reinforcing bar be positioned at best operational position.In addition, fix because the regular reinforcement of every kind of series is cut maximum open-angle, its maximum bar diameter that can shear also is definite, when running into the bigger reinforcing bar of high strength more or diameter, just is difficult to incision, even chipping takes place.And because the restriction of structure, the force increasing ratio of mechanism not enough, cutting off reinforcing bar still needs bigger arm strength, under emergency, is not suitable for uses such as child old man.
The utility model content
It is more even that the purpose of this utility model provides a kind of application of force, the cutter head working position is easy to adjust, the parallel cutter head that is convenient for changing during damage, shearing work is wider, can adapt to the reinforcing bar of shearing more diameters, and reinforcement effect is more remarkable, and labour-saving reinforced shear more is to solve the technical problem of the existing correspondence of prior art.Above-mentioned technical problem is mainly solved by the following technical programs:
Disclosed a kind of reinforced shear of the present utility model, comprise a knife rest and a tool rest and some cutter heads, two force application rods, and two quarter butts and a crossbeam, a center screw axis, described knife rest have " F " type opening, and are provided with the cutter head that pair of parallel is arranged in opening, wherein a cutter head directly is provided with on the knife rest, and another cutter head is arranged on the described tool rest; Described knife rest and crossbeam all have coaxial centre bore; Described tool rest affixed described center screw axis pass the centre bore of described knife rest; Described knife rest, force application rod, quarter butt, crossbeam, quarter butt, force application rod, knife rest by the hinged successively formation sealing of pin and with the center screw axis be two four-bar mechanism force-increasing mechanisms of symmetry axis; And on the force application rod two pin-and-holes apart from the ratio of force application rod total length at 0.1-0.3, quarter butt and force application rod length ratio are 0.1-0.15 for value.Utilize lever principle, with the direction of the two parallel quarter butts pin joint by force application rod and knife rest, i.e. resistance arm design place goes to zero during design, thereby the power that applies on the force application rod is amplified, and secondly, utilizes two four-bar mechanisms once more power to be increased and is twice.
As preferably, a kind of reinforced shear, the end of described center screw axis and two engagements of the internal thread of a screwed pipe, the described screwed pipe other end be thin end, described thin end passes the centre bore on the described crossbeam, also establishes an adjustment handle on the thin end.Leading screw-nut body that rotation adjustment handle can drive leading screw and screwed pipe formation moves up and down the following cutter head on the tool rest in knife rest " F " type opening, to adapt to the reinforcing bar of shearing the different-diameter size.
As preferably, a kind of reinforced shear is characterized in that described cutter head is parallel slide block cutter head, is respectively equipped with T-slot on promptly described knife rest and the tool rest, matches with the back of cutter head.Like this after the cutting edge local damage, can work by the new cutting edge position of adjusting cutter head in the T-slot, treat convenient and swiftly to take off when whole cutting edge can not use and reface, prolonged the service life of reinforced shear so greatly, also alleviate the use cost of individual or unit, the most important thing is to make things convenient for the workpiece location.
As preferably, a kind of reinforced shear is characterized in that described force application rod is a hollow, and its end is provided with external screw thread and matches with spiral cover, and some alternative cutter heads are housed in the handle of hollow.Carry alternative cutter head, wait first wife's cutter head fully blunt after, can change immediately, prolonged the service life of reinforced shear greatly.
As preferably, a kind of reinforced shear, the cutting edge of described cutter head are coated with high hard wearing layer.Also can change the shearing needs that the higher cutter head of cutting edge hardness adapts to the high rigidity bar.
Therefore, the utlity model has rational in infrastructurely, technology is simple, and reinforcement effect is good, and the scope of application is wide, and use cost is low, and characteristics such as increase the service life.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of part spiral cover of the present utility model;
The schematic diagram of extreme position when Fig. 3 is work of the present utility model;
Fig. 4 is the right view of Fig. 3;
Fig. 5 is a stereogram of the present utility model.
Among the figure: 1, knife rest; 2, cutter head; 3, tool rest; 4, center screw axis; 5, screwed pipe; 6, quarter butt; 7, crossbeam; 8, adjust handle; 9, force application rod; 10, spiral cover.
The specific embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1: a kind of reinforced shear, comprise a knife rest 1 and tool rest 3 and some cutter heads 2, two force application rods 9, and two quarter butts 6 and a crossbeam 7, a center screw axis 4, described knife rest 1 have " F " type opening, and are provided with the cutter head 2 that pair of parallel is arranged in opening, wherein a cutter head directly is provided with on the knife rest 1, and another cutter head is arranged on the described tool rest 3; Described knife rest 1 and crossbeam 7 all have coaxial centre bore; Described tool rest 3 affixed described center screw axis 4 pass the centre bore of described knife rest 1; Described knife rest 1, force application rod 9, quarter butt 6, crossbeam 7, quarter butt 6, force application rod 9, knife rest 1 by the hinged successively formation sealing of pin and with center screw axis 4 be two four-bar mechanism force-increasing mechanisms of symmetry axis; And on the force application rod 9 two pin-and-holes apart from the ratio of force application rod total length about 0.1, quarter butt 6 is 0.125 with force application rod 9 length ratios.Utilize lever principle that the power that applies on the force application rod is amplified, secondly, utilize two four-bar mechanisms once more power to be increased and be twice.Described knife rest 1 has " F " type opening, and in opening, be provided with the cutter head 2 that pair of parallel is arranged, wherein going up cutter head directly is provided with on the knife rest 1, following cutter head is arranged on the tool rest 3, described tool rest 3 an affixed center screw axis 4 pass the centre bore of described knife rest 1, the screw thread of described center screw mandrel shaft end and the engagement of the internal thread of a screwed pipe 5, described screwed pipe 5 other ends be carefully to hold, its thin end passes the centre bore on the described crossbeam 7, also establishes one on the thin end and adjusts handle 8.Rotation adjustment handle can drive center screw axis 4 moves up and down the following cutter head on the tool rest 3 with leading screw-nut body that screwed pipe 5 constitutes in " F " of knife rest 1 type opening, to adapt to the reinforcing bar of shearing the different-diameter size.Because of the ultimate range between two cutter heads is 20mm, so this reinforced shear can be cut following all reinforcing bar or the similar bars of 20mm.
Embodiment 2: a kind of reinforced shear, comprise a knife rest 1 and two force application rods 9 that are symmetricly set on the knife rest both sides, described reinforced shear also includes two quarter butts 6 and crossbeam 7 of two cutter heads 2, symmetric arrangement, and 4, one of center screw axis are adjusted handle 8 and some connecting pins and screw; Described knife rest 1 and crossbeam 7 all have coaxial centre bore; Described knife rest 1, force application rod 9, quarter butt 6, crossbeam 7, quarter butt 6, force application rod 9, knife rest 1 are two four-bar mechanism force-increasing mechanisms of symmetry axis by the hinged successively formation sealing of pin and with the centre bore axis with crossbeam 7; And on the force application rod 9 two pin-and-holes apart from the ratio of force application rod total length about 0.2, quarter butt 6 and force application rod 9 length ratio values 0.1.Utilize lever principle that the power that applies on the force application rod 9 is amplified.Secondly, utilizing two four-bar mechanisms once more power to be increased is twice.Described knife rest 1 has " F " type opening, and in opening, be provided with the cutter head 2 that pair of parallel is arranged, wherein going up cutter head directly is provided with on the knife rest 1, following cutter head is arranged on the tool rest, described tool rest an affixed center screw axis 4 pass the centre bore of described knife rest 1, the internal thread engagement of a screw thread on the described center screw axis 4 and a screwed pipe 5, described screwed pipe 5 other ends be carefully to hold, described thin end passes the centre bore on the described crossbeam 7, also establishes one on the thin end and adjusts handle 8.Leading screw-nut body that rotation adjustment handle can drive leading screw and screwed pipe formation moves up and down the following cutter head on the tool rest in knife rest " F " type opening, to adapt to the reinforcing bar of shearing the different-diameter size.Because of the ultimate range between two cutter heads is 10mm, so this reinforced shear can be cut following all reinforcing bar or the similar bars of 10mm.
Embodiment 3: a kind of reinforced shear, its basic system is the same, and on the force application rod 9 two pin-and-holes apart from the ratio of force application rod total length about 0.3, quarter butt 6 and force application rod 9 length ratio values 0.15.Just cutter head 2 is parallel slide block cutter head, and ad hoc respectively on promptly described knife rest and the tool rest have a T-slot, matches with the back of cutter head.Like this after the cutting edge local damage, can work by the new cutting edge position of adjusting cutter head in the T-slot, treat convenient and swiftly to take off when whole cutting edge can not use and reface, prolonged the service life of reinforced shear so greatly, also alleviated the use cost of individual or unit.Described force application rod 9 is a hollow, reduced the manufacturing cost of reinforced shear like this, and it is in light weight, and have spiral cover 10 endways, also be furnished with alternative cutter head 2 in the force application rod of hollow, carry alternative cutter head, wait first wife's cutter head fully blunt after, can change immediately, prolong the service life of reinforced shear greatly.
Embodiment 4: a kind of reinforced shear, and the same 3 embodiment of its operation principle, the cutting edge that just is placed on the force application rod 9 interior alternative cutter heads 2 of hollow is coated with high hard wearing layer.Change the more cutter head of high rigidity like this, can shear the more bar of high rigidity.
In addition, the concrete mode that cooperates with parallel slide block cutter head on knife rest 1 and the tool rest 3 also can be changed as required, puts the pipe adjustment and executes boosting-rod 9 length and also can increase shearing force.But still in protection domain of the present utility model.The utlity model has rational in infrastructurely, technology is simple, and reinforcement effect is good, the shearing scope is wide, and use cost is low, and characteristics such as increase the service life, be suitable for unit and family and use, be applicable to that particularly fire disaster emergency cuts off the reinforcing bar of all kinds of burglary-resisting windows, make things convenient for personnel to flee from the disaster scene.
Claims (5)
1. reinforced shear, comprise a knife rest (1) and a tool rest (3) and some cutter heads (2), two force application rods (9), and two quarter butts (6) and a crossbeam (7), a center screw axis (4) is characterized in that described knife rest (1) has " F " type opening, and is provided with the cutter head (2) that pair of parallel is arranged in opening, wherein a cutter head directly is provided with on the knife rest (1), and another cutter head is arranged on the described tool rest (3); Described knife rest (1) and crossbeam (7) all have coaxial centre bore; Described tool rest (3) affixed described center screw axis (4) pass the centre bore of described knife rest (1); Described knife rest (1), force application rod (9), quarter butt (6), crossbeam (7), quarter butt (6), force application rod (9), knife rest (1) by the hinged successively formation sealing of pin and with center screw axis (4) be two four-bar mechanism force-increasing mechanisms of symmetry axis; And on the force application rod two pin-and-holes apart from the ratio of force application rod total length at 0.1-0.3, quarter butt and force application rod length ratio are 0.1-0.15 for value.
2. a kind of reinforced shear according to claim 1, it is characterized in that the end of described center screw axis (4) and internal thread two engagements of a screwed pipe (5), described screwed pipe (5) other end is thin end, thin end passes the centre bore on the described crossbeam (7), also establishes one on the thin end and adjusts handle (8).
3. reinforced shear according to claim 1 and 2 is characterized in that described cutter head (2) is parallel slide block cutter head, is respectively equipped with T-slot on promptly described knife rest and the tool rest, matches with the back of cutter head.
4. want 3 described reinforced shears according to right, it is characterized in that described force application rod (9) is a hollow, its end is provided with external screw thread and matches with spiral cover (10), and some alternative cutter heads (2) are housed in the handle of hollow.
5. want 4 described reinforced shears according to right, it is characterized in that the cutting edge of described alternative cutter head (2) is coated with high hard wearing layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202666743U CN201823848U (en) | 2010-07-16 | 2010-07-16 | Reinforcing bar shears |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202666743U CN201823848U (en) | 2010-07-16 | 2010-07-16 | Reinforcing bar shears |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201823848U true CN201823848U (en) | 2011-05-11 |
Family
ID=43962408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202666743U Expired - Fee Related CN201823848U (en) | 2010-07-16 | 2010-07-16 | Reinforcing bar shears |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201823848U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717146A (en) * | 2012-06-18 | 2012-10-10 | 李苗 | Door and window grate forcible entry escaping tool |
-
2010
- 2010-07-16 CN CN2010202666743U patent/CN201823848U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717146A (en) * | 2012-06-18 | 2012-10-10 | 李苗 | Door and window grate forcible entry escaping tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110511 Termination date: 20120716 |