CN201609744U - Shearing knife - Google Patents

Abstract

The utility model discloses a shearing knife which comprises a cutting knife arranged on a base. A clamping device matched with the base is mounted at the upper part of the base; the clamping device comprises a clamping plate with one end hinged with the upper part of the base; the clamping plate is clamped with the upper part of the base through a torsion spring; and a support arm is hinged at the lower part of the base. The support arm is arranged at the lower part of the base, so as to greatly enhance the stability of the base; hinge arrangement ensures that the support arm can be supported open and also can be folded on the side of the base, and the operation is very convenient; and by adopting the structure, the shearing knife has reasonable structure and high shearing efficiency, can avoid slipping, and is suitable for being used in shearing reinforcement or iron wires, particularly suitable for cutting more reinforcement or iron wires at one time, thereby contributing to the improvement on shearing efficiency.

Description

A kind of shear knife

Technical field

The utility model relates to a kind of shear knife.

Background technology

Shear knife is a kind of common shearing instrument.At present, people often use relatively large shear knife when wire objects such as shear reinforcement, iron wire, this shear knife generally comprises a base, the chopper hinged with base is installed on the base, when using this shear knife to carry out the rupturing operation of reinforcing bar or iron wire, need earlier chopper to be started, then reinforcing bar or iron wire are placed on the base, final force is pushed chopper, by the shearing force between chopper and the base reinforcing bar or iron wire are cut off, operate very simply, use very extensive.But the weak point of traditional shear knife is, chopper is when beginning shear reinforcement or iron wire, chopper to reinforcing bar or iron wire can produce one along the base upper edge to the thrust of extending away from the chopper direction, like this, reinforcing bar or iron wire can slide to the direction away from chopper on base, cause shearing failure, at this moment, to need shear several times or tramp with one's feet reinforcing bar or iron wire, shear efficiency is lower more.

The utility model content

The technical problems to be solved in the utility model be at above-mentioned deficiency provide a kind of rational in infrastructure, can prevent to skid a kind of shear knife that shear efficiency is high.

For solving the problems of the technologies described above, this shear knife comprises the chopper that is installed on the base, and its design feature is: base top is equipped with the clamping device that cooperates with base.

The shear knife of this structure by clamp structure realize preventing to skid, shear efficiency is high.

Clamp structure is meant the clamping device that is arranged on the base, this clamping device is used with base, when needing shear reinforcement or iron wire class article, chopper is lifted, again reinforcing bar or iron wire are placed on the base, with clamping device reinforcing bar or iron wire and base are clamped together then, like this, reinforcing bar or iron wire just are held, at last, pull chopper to the reinforcing bar or the iron wire direction application of force, because reinforcing bar or iron wire are held, therefore, even the chopper alignment applies external force, reinforcing bar or iron wire can not skid, and firmly press chopper and reinforcing bar or iron wire can be cut off, and need not to tramp with one's feet reinforcing bar or iron wire are sheared, it is auxiliary also to need not other people, operate very simply, cut into the power height, help to improve shear efficiency.

As a kind of implementation, described clamping device comprises the clamping plate of an end and base upper articulation, and clamping plate is clamped together by torsion spring and base top.

The clamping force of this clamping device is provided by torsion spring, and under the elastic force effect of torsion spring, clamping plate tightly is pressed in base top, clamping plate one end and base upper articulation, therefore, in use, earlier with clamping plate along jointed shaft is cocked come after, reinforcing bar or iron wire are placed into the base upper edge, unclamp clamping plate then, like this, clamping plate is just under the elastic force effect of torsion spring, reinforcing bar or iron wire tightly are pressed on the base, press chopper and can disposable reinforcing bar or iron wire be cut off, skidding can not occur.

As improvement, the base lower hinge has support arm.

Use shear knife when carrying out shearing manipulation, generally all need bigger external force, therefore when the chopper incision, base can shake, and influences operator's application of force, and especially when shearing than bar reinforcement, this defective is more obvious.After the base bottom is provided with support arm, can strengthen the stability of base greatly, hinged setting can be supported support arm and come, and also support arm can be closed to the base avris, and operation is very easy.

In sum, adopt the shear knife of this structure, rational in infrastructure, can prevent to skid, the shear efficiency height uses when being fit to shear reinforcement or iron wire, uses when being particluarly suitable for more reinforcing bar of disposable shearing or iron wire, helps to improve shear efficiency.

Description of drawings

In conjunction with the accompanying drawings the utility model is described in further details:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 overlooks the structural representation of state for the utility model.

Among the figure: 1 is base, and 2 is chopper, and 3 is clamping plate, and 4 is torsion spring, and 5 is support arm, and 6 is projection, and 7 is reference column, and 8 are rotating shaft.

The specific embodiment

As shown in Figure 1, structural representation for this utility model, this shear knife comprises base 1, base 1 is rectangular-shaped, base 1 upper surface is provided with the cut groove that is provided with along base 1 length direction, cut groove one end is hinged with chopper 2, and chopper 2 fits together with cut groove one sidewall, and this cut groove side wall upper part is provided with the blade corresponding with chopper 2.As shown in Figure 2, overlook the structural representation of state for this utility model, base 1 one lateral wall tops are provided with the rotating shaft vertical with sidewall 8, be set with clamping plate 3 in the rotating shaft, the cover holding position of rotating shaft 8 and clamping plate 3 is positioned at an end of clamping plate 3, clamping plate 3 can rotate along rotating shaft 8, be set with torsion spring 4 in the rotating shaft 8, one end of torsion spring 4 is pressed on the clamping plate 3, also is installed with reference column 7 on base 1 sidewall, and the other end of torsion spring 4 is pressed on the reference column 7, like this, clamping plate 3 is just pressed to base 1 under the elastic force effect of torsion spring 4, spacing in order to realize, the end of clamping plate 3 is provided with the projection 6 that is pressed in base 1 upper edge.Base 1 lower hinge has support arm 5, can strengthen the stability of base 1 after support arm 5 launches, and helps the operator to carry out shearing manipulation.

Claims (3)

1. a shear knife comprises the chopper (2) that is installed on the base (1), it is characterized in that: base (1) top is equipped with the clamping device that cooperates with base (1).

2. shear knife as claimed in claim 1 is characterized in that: described clamping device comprises the clamping plate (3) of an end and base (1) upper articulation, and clamping plate (3) is clamped together by torsion spring (4) and base (1) top.

3. shear knife as claimed in claim 1 or 2 is characterized in that: base (1) lower hinge has support arm (5).

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