CN202741825U

CN202741825U - Compound lever type iron plate shear

Info

Publication number: CN202741825U
Application number: CN 201220448613
Authority: CN
Inventors: 张元青
Original assignee: Dalian Vocational and Technical College
Current assignee: Dalian Vocational and Technical College
Priority date: 2012-09-03
Filing date: 2012-09-03
Publication date: 2013-02-20
Anticipated expiration: 2022-09-03

Abstract

The utility model discloses a compound lever type iron plate shear which is composed of a tool rest pedestal, an upper tool rest, a lower tool rest, an upper blade, a lower blade, a connecting rod and a handle, wherein the lower blade is provided with three counter bores and fixed on the lower tool rest by using three countersunk head fastening bolts, and a cutting edge is horizontal upwards; a lower tool rest pillow plate is arranged below the lower blade, and the lower tool rest pillow plate is welded on the tool rest pedestal and the lower tool rest; and the connecting rod is composed of two steel plates which are same in shape and size, the lower end of the connecting rod is in articulated connection with the upper blade, and the upper end of the connecting rod is in articulated connection with the handle. When the iron plate shear is used, through taking an upper blade as a primary lever and taking the handle as a secondary lever, a compound lever is formed. The iron plate shear disclosed by the utility model has the advantages that the defects that other iron plate shearing tools are inconvenient to use, high in cost, large in noise and more in dust, raw materials are wasted, incisions are difficult to process, the thickness of a sheared iron plate is small, and the like are overcome, so that the iron plate shear is an ideal iron plate shearing tool for repair teams and fitter teams and the like for small processing factories, repairing departments, construction teams and factories.

Description

Composite lever formula Iron shears

Technical field the utility model relates to a kind of iron plate clipping tool, especially a kind of composite lever formula Iron shears.

Background technology is well-known, and the repairing teams and groups of existing small processing factory, repair shop, construction team and factory, pincers worker teams and groups etc. in the instrument that cutting iron plate is used, exist many defectives: use main equipment, and inconvenient, cost is high; Use abrasive wheel cutting machine, the one, noise is very large, dust is very large, and the 2nd, cause waste of raw materials; Use gas cutting can cause the reluctant trouble of otch; Use Manual knife to be difficult to reach the straight requirement of otch, and can not the thicker iron plate of cutting; Use general lever Iron shears, although can make otch straight, the iron plate thickness that can shear is also very limited.

The summary of the invention the purpose of this utility model is for above-mentioned said deficiency, the defectives such as the inconvenience, the cost that exist in the existing iron plate cutting technique are high, noise is large, dust is large, otch is difficult to process, shear effort, efficient is low have been overcome, provide a kind of use flexible, simple to operate, strong adaptability, high efficiency, blade are easy to dismantle, change and polishing, composite lever formula Iron shears safe to use, to satisfy people's use needs.

The utility model is comprised of knife rest pedestal, lower slide, upper tool post, cutter, bottom knife, connecting rod and handle, and bottom knife is provided with three counterbores, and is fixed on the lower slide with three countersunk head fastening bolts, and the blade level upwards; There is lower slide pillow plate the bottom knife below, and lower slide pillow plate is welded on knife rest pedestal and the lower slide.

Left side at lower slide and upper tool post, by upper lower slide connecting plate lower slide and upper tool post are welded together, and upper tool post and lower slide are in two parallel perpendiculars, the upper surface of connecting plate and the upper surface of lower slide are in a plane, and lower surface and upper tool post lower surface are in a plane.

Cutter and upper tool post form chain connection, and handle left end and upper tool post form chain connection, and connecting rod is that two block-shaped and measure-alike steel plates form, and the lower end of connecting rod and cutter formation hinge links, and the upper end of connecting rod and handle form hinge links.

Have groove on the upper tool post surface corresponding to cutter middle part vertical direction, the cutter tuning plate is installed in the groove.

After adopting said structure, during use, take cutter as the one-level lever, take handle as second lever, thereby the formation composite lever in the situation that do not increase decreased food, imposes same power, very large shearing force can be obtained, thicker iron plate can be sheared, and can people's complete operation.

The utility model has the advantages that: having remedied other iron plate clipping tool and used the deficiencies such as inconvenient, that cost is high, noise is large, dust is many, waste raw material, otch is difficult to process, the thickness of the iron plate of cutting is little, is the desirable iron plate crop tool of the repairing teams and groups, pincers worker teams and groups etc. of small processing factory, repair shop, construction team and factory.

Description of drawings Fig. 1 is front view of the present utility model.

Fig. 2 is left view of the present utility model.

Fig. 3 is the front view of the utility model pedestal and knife rest.

Fig. 4 is the left view of the utility model pedestal and knife rest.

Fig. 5 is the top view of the utility model knife rest.

Fig. 6 is the front view of the utility model bottom knife.

Fig. 7 is the front view of the utility model cutter.

Fig. 8 is the front view of the utility model connecting rod.

Fig. 9 is the structural representation of handle left end tapping.

Description of reference numerals

Lower slide connecting plate, 5 lower slides pillow plate, 6 cutters, 7 bottom knife, 8 cutter tuning plates, 9 connecting rods, 10 handles, 11 grooves on 1 knife rest pedestal, 2 lower slides, 3 upper tool posts, 4.

Specific embodiment the utility model is comprised of knife rest pedestal 1, lower slide 2, upper tool post 3, cutter 6, bottom knife 7, connecting rod 9 and handle 10.Bottom knife is provided with three counterbores, and is fixed on the lower slide with three countersunk head fastening bolts, and the blade level makes progress, and the setting of counterbore can guarantee that the bolt end face is concordant with the side of bottom knife after tightening; There is lower slide pillow plate 5 the bottom knife below, and lower slide pillow plate is welded on knife rest pedestal and the lower slide, and the effect of lower slide pillow plate is to prevent that bottom knife from moving down; Position vertical center, level at the corresponding bottom knife of lower slide are laid with two screwed holes, screw in respectively to adjust screw, and adjusting screw for these two can be used in conjunction with the cutter adjusting device, in order to regulate bottom knife and cutter, it is matched; Connecting rod is comprised of two block-shaped and measure-alike steel plates, and connecting rod connects cutter and handle.

In the left side of lower slide and upper tool post, by upper lower slide connecting plate 4 lower slide and upper tool post are welded together, and upper tool post and lower slide to be in two parallel perpendiculars, spacing is slightly larger than two blade thickness sums; The upper surface of connecting plate and the upper surface of lower slide in a plane, lower surface and upper tool post lower surface in a plane, and upper lower slide connecting plate up and down size be left large and right small so that iron plate do not stopped shearing forward when advancing, guarantee that otch is straight; Be provided with three circular holes at lower slide, and circular hole is corresponding with three counterbores on the bottom knife.

Be drilled with respectively circular hole in the cutter upper left corner and the upper right corner, bolt passes upper left corner circular hole, screws in the screwed hole at upper tool post middle part, after cutter can freely rotate again near upper tool post, the band top nut makes bolted on upper tool post, and cutter and upper tool post form chain connection; Left end at handle is drilled with first circular hole and second circular hole from left to right successively, the upper tool post upper right corner is processed with screwed hole, bolt passes first circular hole of handle left end, screw in screwed hole, after handle is close to upper tool post and can freely rotates again, the band top nut makes bolted on upper tool post, and handle left end and upper tool post form chain connection; Connecting rod is comprised of two block-shaped and measure-alike steel plates, upper and lower side is drilled with respectively circular hole, with bolt lower end circular hole and cutter upper right corner circle hole shape are in the hinge connection, make that second circle hole shape is in the hinge connection on upper end circular hole and the handle, each bolt will use two nuts, so far, connecting rod couples together cutter and handle, the size of connecting rod, so that when handle is in level, the cutter blade also keeps level, and connecting rod was in the upright position when position of second circular hole of handle left end should guarantee the handle level.

Before cutter is installed, must install in advance blade tuning plate 8, on upper tool post, vertically have groove 11, in the groove from top to bottom, evenly have four holes, first, the 3rd is circular hole, second, the 4th is processed into screwed hole, on the cutter tuning plate at position welding two double-screw bolts corresponding with two circular holes in the groove 11, two double-screw bolts pass corresponding circular hole separately, and two screwed holes on the groove are respectively with adjusting screw, after cutter installs, screw is adjusted in rotation, so that after cutter and bottom knife match, with the nut on the tight double-screw bolt, fix the cutter tuning plate.

The chain connection point that the cutter upper left corner and upper tool post form, as the fulcrum of the one-level lever of this composite lever formula Iron shears, the iron plate contact point of blade and shearing is stress point up and down, and the chain connection point of the cutter upper right corner and connecting rod is the point of application, so far, the one-level lever forms; The chain connection point of upper tool post and handle is the fulcrum of second lever, the chain connection point of handle and connecting rod is as the stress point of second lever, hand-held handle place is the point of application of second lever, so far, second lever forms, the suffered power of the stress point of second lever is delivered to by connecting rod on the point of application of one-level lever, and so far, the two-stage composite lever forms.On this basis, upper tool post is upwards amplified to the right, opened again a screwed hole in the upper right corner, load onto handle, with connecting rod the new handle of installing and original handle are linked again, handle originally only uses as second lever, so just can form three grades of composite levers, and the rest may be inferred, as long as appropriate design Iron shears physical dimension, the requirement of the composite human body application of force just can form multistage composite lever Iron shears, can make Iron shears once add the thickness of shearing iron plate.

During cutting iron plate, the right hand is held the right-hand member of handle, lifts, and left hand is handed iron plate, the position that will cut is placed between the blade of upper bottom knife, according to iron plate thickness, the right hand imposes suitable downward power, just iron plate can be cut off, so repeat, until iron plate is cut off fully.

Claims

1. composite lever formula Iron shears, composite lever formula Iron shears, formed by knife rest pedestal, lower slide, upper tool post, cutter, bottom knife, connecting rod and handle, it is characterized in that: bottom knife is provided with three counterbores, and be fixed on the lower slide with three countersunk head fastening bolts, the blade level is upwards; There is lower slide pillow plate the bottom knife below, and lower slide pillow plate is welded on knife rest pedestal and the lower slide.

2. a kind of composite lever formula Iron shears according to claim 1, it is characterized in that: in the left side of lower slide and upper tool post, by upper lower slide connecting plate lower slide and upper tool post are welded together, and upper tool post and lower slide are in two parallel perpendiculars, the upper surface of connecting plate and the upper surface of lower slide are in a plane, and lower surface and upper tool post lower surface are in a plane.

3. a kind of composite lever formula Iron shears according to claim 1, it is characterized in that: cutter and upper tool post form chain connection, handle left end and upper tool post form chain connection, connecting rod is that two block-shaped and measure-alike steel plates form, and the lower end of connecting rod and cutter form hinge links, and the upper end of connecting rod and handle form hinge links.

4. a kind of composite lever formula Iron shears according to claim 1 is characterized in that: have groove on the upper tool post surface corresponding to cutter middle part vertical direction, the cutter tuning plate is installed in the groove.