CN202207834U - High-performance shearing blade - Google Patents

Abstract

The utility model relates to a high-performance shearing blade. The surface shape of the shearing blade is like a round-cornered T-shaped flat piece, a first mounting hole is arranged at the end part of a tool face in the position of the middle vertical part of the round-cornered T, a second mounting hole is arranged at the end part of the tool face on one side of the transverse part of the round-cornered T, a cutting edge is arranged on one side of the tool face on the other side of the transverse part of the round-cornered T, and serrated teeth are arranged on the other side which is opposite to the cutting edge. The section shape of the cutting edge is as follows: one surface is a plane, the other surface comprises two slopes which are connected, the angle between the first slope which is next to the line of the cutting edge and the plane is large, and the surface width of the first slope is small; and the angle between the other second slope and the plane is small, and the surface width of the second slope is large. The capability of the shearing blade is improved from that capable of shearing phi 28 round steel to that capable of sharing phi 32 round steel, and the performance is improved by 30.6%; a blank of shearing 20, 45, 38CrSi, 42CrMo and other types of steel is filled up, and the high-performance shearing blade can fully meet emergency shearing demands during rescue process against sheared materials with the hardness below HRC22.

Description

The high-performance shearing blade

Technical field

The utility model belongs to the working end of rescuing break-in tool, particularly a kind of high-performance shearing blade.

Background technology

The hydraulic relief break-in tool is applied to car accident, house collapse, and the scene of fire, or in the natural calamity such as earthquake, be used for cutting off various steel rods and thin-walled steel plate. can be equipped with People's Armed Police, highway fast reaction rescue group to fire brigade.Tool weight and the volume equipped on original instrument are big, can only cut the Q235 steel rod of Φ 28, can not cut hard material, use and the subject matter operated restricted bigger.Do not have this type of applied range at present abroad yet, and can cut the cutter of hard material.

The utility model content

The utility model technical problem to be solved is: a kind of high-performance shearing blade is provided.

The technical scheme of the utility model is:

A kind of high-performance shearing blade; It is characterized in that: the surface topography of this shearing blade is flat of the T shape of a fillet; There is first installing hole a perpendicular knife face end in the middle of fillet T shape; There is second installing hole knife face end in the T of fillet shape one a horizontal side, is cutting edge in a side of the T of fillet shape one horizontal opposite side knife face, and the sawtooth tooth is arranged on the opposite side on cutting edge opposite.

Sawtooth tooth on the opposite side on said cutting edge opposite has two.

The section configuration of said cutting edge is: one side is the plane, and another side is made up of two inclined-planes that join, and first inclined-plane and the angle between the plane that are close to the cutting edge line are big, and the first chamfered surface width is little; Angle between another second inclined-plane and the plane is little, and the second chamfered surface width is big.

The utility model effect is:

Its ability of this high-performance shearing blade is brought up to and can be cut off φ 32 round steel by cutting off φ 28 round steel, and performance improves 30.6%; Filled up 20,45,38CrSi, the shearing of steel grades such as 42CrMo is blank; Shearing blade in the past can only be cut the Q235 of no hardness, and this high-performance shearing blade can be cut off the material of the hardness below the HRC22, can satisfy the emergent shearing demand in the rescue process fully.

Description of drawings

Fig. 1 is a high-performance shearing blade contour structures sketch map

Fig. 2 is the sectional drawing of the cutting edge of high-performance shearing blade

Fig. 3 is to use the high-performance shearing blade that complete machine cutter sketch map is installed

The specific embodiment

A kind of high-performance shearing blade as shown in Figure 1; The surface topography of this shearing blade is flat of the T shape of a fillet; There is first installing hole 1 a perpendicular knife face end in the middle of fillet T shape; There is second installing hole 2 knife face end in the T of fillet shape one a horizontal side, is cutting edge 3 in a side of the T of fillet shape one horizontal opposite side knife face, and sawtooth tooth 4 is arranged on the opposite side on cutting edge opposite.

Sawtooth tooth on the opposite side on said cutting edge opposite has two.

The section configuration of said cutting edge as shown in Figure 2 is: one side is plane 5, and another side is made up of two inclined-planes that join, and first inclined-plane 6 and the angle between the plane that are close to the cutting edge line are big, and the first chamfered surface width is little; Angle between another second inclined-plane 7 and the plane is little, and the second chamfered surface width is big.

The technical problem that this high-performance shearing blade will solve is:

1. structure optimization is increased work efficiency, and is contained on the cutter, can shear the Q235 bar of Φ 32mm;

2. optimization of material, raising can be cut off scope, is contained on cutter 8 (see figure 3)s, can shear the middle low carbon steel and the middle low-carbon alloy steel of no hardness;

3. Optimization of Heat Treatment improves the hardness range of application of material, can shear stiffness HRC22 with interior bar;

The technical scheme that this high-performance shearing blade adopts:

1. adopt the brand-new concave arc structural design theory of your kind effort research, reach more a high proportion of efficient output-index;

2. select for use your kind effort applying for the BJ-DL-1 material of patent of invention, reach the scope that expansion can be sheared material;

To the BJ-DL01 material, adopt special Technology for Heating Processing, reach the scope that enlarges shearing material hardness.

Claims (3)

1. high-performance shearing blade; It is characterized in that: the surface topography of this shearing blade is flat of the T shape of a fillet; There is first installing hole a perpendicular knife face end in the middle of fillet T shape; There is second installing hole knife face end in the T of fillet shape one a horizontal side, is cutting edge in a side of the T of fillet shape one horizontal opposite side knife face, and the sawtooth tooth is arranged on the opposite side on cutting edge opposite.

2. a kind of high-performance shearing blade according to claim 1 is characterized in that: the sawtooth tooth on the opposite side on said cutting edge opposite has two.

3. a kind of high-performance shearing blade according to claim 1; It is characterized in that: the section configuration of said cutting edge is: one side is the plane; Another side is made up of two inclined-planes that join, and first inclined-plane and the angle between the plane that are close to the cutting edge line are big, and the first chamfered surface width is little; Angle between another second inclined-plane and the plane is little, and the second chamfered surface width is big.

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