CN2242151Y

CN2242151Y - Shearing machine for shaped steel

Info

Publication number: CN2242151Y
Application number: CN 95229197
Authority: CN
Inventors: 尹常治; 王长松
Original assignee: University of Science and Technology Beijing USTB
Current assignee: University of Science and Technology Beijing USTB
Priority date: 1995-12-21
Filing date: 1995-12-21
Publication date: 1996-12-11
Anticipated expiration: 2005-12-21

Abstract

The utility model relates to a shearing machine for shaped steel, comprising a left and a right upright posts, a movable and a fixed cutters, an upper cover plate, a bottom board and a return mechanism. The upper cover plate (13) is provided with a pressure lever (2) which can slide along under the upper hole of the upper cover plate, the lower end of the pressure lever is provided with an inclined plane, and the inclined plane is contacted with the octagonal movable cutter (4). The upper cover plate is fixed with an upper slide block (12), the bottom board is fixed with a lower slide block (5), and the upper slide block (12) and the lower slide block (5) are respectively provided with inclined planes matched with the inclined plane of the movable cutter (4). The movable cutter can slide on the inclined planes, and the movable and the fixed cutters are fixed by lug bosses of the inclined planes of the upper slide block (12) and the lower slide block (5) and the grooves of the left and the right upright posts. The movable and the fixed cutters are fixed with a movable cutter head (3) and a fixed cutter head (8), the lower end of the left upright post (10) is provided with a spring (11) used for pushing the movable cutter (4) and resetting the pressure lever (2). The shearing machine having simple structure, uniform shearing force and stress, no impact, short shearing stroke and convenient replacement for the cutter head can be used for cutting shaped steel components in the industries of construction, metallurgy, shipbuilding, etc.

Description

A kind of joist shears

A kind of shaped steel shearing equipment is used to cut off section bar (worker, angle, channel-section steel).

At present, cut-out shaped steel generally makes sawed-off with a chainsaw, the oxygen cutting method, and the sawed-off section bar time of electric saw is long, and efficient is low, and noise is big; Oxygen cutting makes the section out-of-flatness, need process once more.

The plant-manufactured mechanical type angle steel of China cuts off equipment, and vertical direction is cut off angle steel, though overcome the shortcoming of above-mentioned two kinds of methods, shearing force is bigger, and equipment is heavy.

The utility model provides a kind of shearing force little, and device structure is simple, the joist shears that efficient is high.

These joist shears are made up of left and right column, moving, stationary knife, upper cover plate, base plate and gigback, and a depression bar that can slide up and down along the upper cover plate upper aperture is housed on upper cover plate, and there is an inclined-plane depression bar lower end, and this inclined-plane contacts with octagonal moving knife; Fix a top shoe at upper cover plate, fix a sliding block on the base plate, have respectively on top shoe, the sliding block one and moving knife on the inclined-plane that matches, inclined-plane, moving knife can slide along this inclined-plane, projection on top shoe, the sliding block inclined-plane and the groove on the left and right column are fixed moving, stationary knife, are fixed with dynamic cutter head, stationary knife head on moving, the stationary knife, in the left column lower end one spring assembly are housed, end chamfer contacts with the moving knife inclined-plane, is used to promote moving knife and depression bar resets.

It is best when the inclined-plane that the another embodiment of above-mentioned joist shears is depression bar (2) lower surfaces with moving knife (4) connects the inclined-plane of inclined-plane, sliding block (12) of the inclined-plane at angle, inclined-plane that spring assembly (11) contacts with moving knife, top shoe (5) and the moving knife (4) that slides therein is 45 °, 135 °.。

Another embodiment of above-mentioned joist shears is to adopt 30 °～50 ° dovetail structures at left column, right column, upper cover plate, base plate.

Another embodiment of above-mentioned joist shears is to connect an oil cylinder in the depression bar upper end.

Figure one is a front view of the present utility model;

Figure two is left view of the present utility model (analysing and observe);

Be described in further detail below in conjunction with accompanying drawing:

Left column 10, right column 9 are that 45 ° of dovetail structures are connected with upper cover plate 13, base plate 6, the piston vertical force of oil cylinder 1 imposes on depression bar 2, by the depression bar ramp, make external force direction change into 45 °, promote the moving knife 4 of octagon-shaped, four faces of moving knife are 45 ° and 135 ° of inclined-planes, be installed in 45 ° the slideway of top shoe 12, sliding block 5, move along 45 ° of directions, in the shear history, moving knife 4 offsets along 45 ° of directions and stationary knife 7, realizes shearing.Can change stationary knife head 8 according to different requirement, dynamic cutter head 3, finish once shear after, spring assembly 11 promotes moving knife and depression bar resets, and connects an oil cylinder in the depression bar upper end, oil cylinder is fixed on the upper cover plate.

Advantage of the present utility model:

These joist shears are simple in structure, in shear history, apply shearing along 45 ° of directions Power begins from the shaped steel two ends along 45 ° of directions pressurizations mobile shearing gradually, shear each Instantaneous, the length that cutting edge is cut off shaped steel is the part of shaped steel, thereby makes shearing force greatly Reduce, the corresponding power of motor of institute and weight of equipment also greatly reduce; Left and right column and upper Cover plate, base plate adopt 45 ° of dovetail structures to connect, and make level, vertical direction keep stable, Body dimension is littler, and has guaranteed intensity.

Claims

1. joist shears, form by left and right column, moving, stationary knife, upper cover plate, base plate and gigback, it is characterized in that: a depression bar (2) that can slide up and down along the upper cover plate upper aperture is housed on upper cover plate (13), there is an inclined-plane depression bar lower end, and this inclined-plane contacts with octagonal moving knife (4); Fix a top shoe (12) at upper cover plate, fix a sliding block (5) on the base plate, have respectively on top shoe (12), the sliding block (5) one and moving knife (4) on the inclined-plane that matches, inclined-plane, moving knife can slide along this inclined-plane, boss on top shoe (12), sliding block (5) inclined-plane and the groove on the left and right column are fixed moving, stationary knife, be fixed with dynamic cutter head (3), stationary knife head (8) on moving, the stationary knife, in left column (10) lower end one spring assembly (11) is housed, is used to promote moving knife (4) and depression bar (2) resets.

2. as the described joist shears of claim 1., it is characterized in that: depression bar (2) lower surface and moving knife (4) connect the inclined-plane of the inclined-plane at angle, inclined-plane that spring assembly (11) contacts with moving knife, top shoe (5), sliding block (12) and the inclined-plane of the moving knife (4) that slides therein best when being 45 °, 135 °.

3. as the described joist shears of claim 1.2, it is characterized in that: left column (9), right column (10) adopt 30 °～50 ° dovetail structures with upper cover plate (12), base plate (6).

4. joist shears as claimed in claim 3 is characterized in that: depression bar (2) upper end connects an oil cylinder (1).