KR20190107386A - Safety apparatus for jaw crusher - Google Patents

Abstract

The present invention relates to a jaw crusher safety device, which comprises: a fixed jaw to improve a structure of a toggle plate to prevent damage to the equipment due to an overload; a swing jaw which is spaced apart from the fixed jaw and pressurizes an object against the fixed jaw; a cheek plate for blocking both side ends between the fixed jaw and the swing jaw; a driving part for swinging the swing jaw; and a toggle plate for supporting a bottom end of the swing jaw, wherein the toggle plate has at least one side bent in the force transmission direction to form a bent portion.

Description

Jaw crusher safety device {SAFETY APPARATUS FOR JAW CRUSHER}

The present invention relates to a jaw crusher safety device for preventing breakage of the jaw crusher by overload.

In general, jaw crusher is a device that crushes to the desired size by applying a repeated impact force to the rock or concrete lumps.

The jaw crusher includes a fixed jaw and a swing jaw that is axially coupled to an eccentric shaft spaced apart from the center of rotation of the flywheel. Thus, the rock introduced through the upper inlet between the fixed jaw and the swing jaw is crushed and crushed between the swing jaw swinging against the fixed jaw is discharged to the bottom.

Between the fixed jaw and the bottom of the swing jaw there is an outlet through which the pulverization is discharged. The lower part of the jaw crusher supports the lower end of the swing jaw, and is provided with a gap adjusting part for adjusting the exit gap between the fixed jaw and the swing jaw.

The gap adjusting part includes a toggle plate that connects between the toggle block and the swing jaw installed in the main body and supports the bottom of the swing jaw. The toggle plate supports the bottom of the swing jaws, which are fitted to the exit gap, and deforms when the swing jaws are overloaded to prevent damage to the equipment.

For example, in addition to very hard ores, rigid materials such as iron will not fracture between the fixed jaws and the swing jaws, causing them to overload. In this case, the toggle plate must be deformed to absorb such an overload, but the conventional toggle plate is in the form of a plate did not properly cope with the overload. Thus, an important part of the equipment, such as a swing jaw or an eccentric shaft, is deformed and damaged by an overload.

The jaw crusher safety device is designed to improve the structure of the toggle plate to prevent damage to the equipment due to overload.

Safety device of the present embodiment, the fixed jaw, the swing jaw spaced apart from the fixed jaw by pressing the object against the fixed jaw, the cheek plate to block both sides between the fixed jaw and the swing jaw, the swing jaw A jaw crusher safety device including a drive unit for swinging and a toggle plate supporting a lower end of the swing jaw, wherein the toggle plate may have a structure in which at least one side is bent along a force transmission direction to form a bent portion.

The bent portion may be continuously formed along a direction perpendicular to the force transmission direction.

The curved portion may have a curved structure in an arc shape.

The curved portion may have a bent structure.

The bend may include a concave portion and a convex portion continuously connected.

The bent portion may form a waveform structure in which a plurality of recesses and convex portions are continuous.

As described above, according to the present embodiment, the toggle plate is more easily deformed against overload, thereby preventing shock from being absorbed or transmitted to the device, thereby preventing damage to the facility and ensuring safety.

1 is a schematic cross-sectional view showing a jaw crusher equipped with a safety device according to the present embodiment.
2 is a view showing a toggle plate of the jaw crusher according to the present embodiment.
3 and 4 are views showing a toggle plate of the jaw crusher according to another embodiment.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art can easily understand, the embodiments described below may be modified in various forms without departing from the concept and scope of the present invention. Where possible, the same or similar parts are represented using the same reference numerals in the drawings.

The terminology used below is merely to refer to specific embodiments, and is not intended to limit the present invention. As used herein, the singular forms “a,” “an,” and “the” include plural forms as well, unless the phrases clearly indicate the opposite. As used herein, the term "comprising" embodies a particular characteristic, region, integer, step, operation, element, and / or component, and other specific characteristics, region, integer, step, operation, element, component, and / or group. It does not exclude the presence or addition of.

All terms including technical terms and scientific terms used below have the same meaning as those commonly understood by those skilled in the art. Terms defined in advance are additionally interpreted to have a meaning consistent with the related technical literature and the presently disclosed contents, and are not interpreted in an ideal or very formal sense unless defined.

1 shows a jaw crusher according to the present embodiment, and FIG. 2 shows a toggle plate of the jaw crusher according to the present embodiment.

As shown in Figure 1, the jaw crusher 100 is a fixed jaw (20), the swing jaw is spaced apart in the fixed jaw (20), and the jaw crusher to press the object against the fixed jaw (20), fixed jaw It includes a cheek plate 40 for blocking both side ends between the 20 and the swing jaw 30, a drive for swinging the swing jaw 30, a toggle plate 50 for supporting the lower end of the swing jaw (30) can do. The jaw crusher is not limited to the above configuration and may be further provided with another configuration.

Fixing jaw 20 is fixed to the frame 10 forming the skeleton of the device. The swing jaw 30 is spaced apart from the fixed jaw 20. Between the fixed jaw 20 and the swing jaw 30 forms a space in which the object is introduced and crushed. The upper and lower ends of the fixed jaw 20 and the swing jaw 30 form the inlet of the object and the bottom forms an outlet through which the crushed matter is discharged.

In the following description, the vertical direction means the y-axis direction in FIG. 1, and the lateral direction means the z-axis direction. In FIG. 1, the x-axis direction is referred to as a front-rear direction. Cheek plates are installed at both side ends of the fixing jaw 20 and the swing jaw 30. Thus, the fixed jaw 20 and the swing jaw 30 and the cheek plate on both sides to form a space in which the object is crushed.

The fixed jaw 20 and the swing jaw 30 may be disposed to be inclined so that the front and rear intervals gradually narrow toward the lower portion from the inlet. Accordingly, the object in the form of a lump injected into a relatively large upper inlet gradually decreases in size as it is pressurized and moves downward, and finally is crushed to a size corresponding to the size of the lower outlet and discharged through the outlet.

The drive unit is for swinging the swing jaw 30, the flywheel 70 rotatably installed in the frame, a drive motor (not shown) for rotating the flywheel, the flywheel is installed away from the rotating shaft and the swing jaw 30 is It may include an eccentric shaft 72 is axially coupled.

Thus, when the drive motor is driven to rotate, the flywheel connected to the drive motor by a drive belt or the like is rotated. The swing jaw 30 is connected to the flywheel 70 via the eccentric shaft 72. When the flywheel 70 rotates, the swing jaw 30 moves up and down with respect to the fixed jaw 20 along the eccentric shaft. The rocking motion in the front and rear direction. Accordingly, the swing jaw 30 moves with respect to the fixed jaw 20 to press and crush the object introduced into the space therebetween.

The lower end of the swing jaw 30 is supported by the toggle plate 50. The toggle plate 50 is disposed in the front and rear direction at the rear of the bottom of the swing jaw 30 to support the swing jaw 30 to maintain a gap between the fixed jaw 20 and the bottom of the swing jaw 30 at a set value. One end of the toggle plate 50 is connected to the bottom of the swing jaw 30, the other end is connected to the toggle block 60 is installed on the frame 10. The toggle block 60 is adapted to adjust its position with respect to the frame 10. Thus, by moving the toggle block 60 in the vertical direction or the front and rear direction, it is possible to adjust the exit interval by adjusting the bottom position of the swing jaw 30 connected to the toggle plate 50.

The jaw crusher 100 may include a safety device for preventing damage to the device when overloaded by foreign matter such as very hard ore or scrap metal.

When the safety device is overloaded between the fixed jaw (20) and the swing jaw (30) is extended the gap of the swing jaw to the fixed jaw (20) to cushion the shock and the shock is transmitted to the important part of the installation To prevent them.

The safety device of this embodiment may have a structure in which the toggle plate 50 is bent when an overload is applied. To this end, the toggle plate 50 may have a structure in which at least one side of the toggle plate 50 is bent to form the bent portion 52.

2 illustrates a toggle plate according to the present embodiment.

As shown in FIG. 2, the toggle plate 50 may have a plate shape, and may have a structure in which a curved portion 52 that is curved along the x-axis direction of FIG. 2 is formed. In FIG. 2, both ends of the toggle plate 50 along the y-axis direction are ends connected to the swing jaw 30 and the toggle block 60, respectively, and are directions in which external force applied from the swing jaw 30 is transmitted. The toggle plate 50 may be formed with a bent portion 52 along the x-axis direction through which the force is transmitted.

Toggle plate 50 is formed of a material having its own rigidity, even if the bent portion 52 is formed, when the force is applied below the load set in the swing jaw 30 is supported by the back of the swing jaw (30) To perform the action.

In addition, when an overload is applied to the toggle plate 50 from the swing jaw 30, the bent portion 52 of the toggle plate 50 is bent and elastically deformed to absorb the overload. In addition, the bent portion 52 is a bent portion in a planar state, and when a greater overload is applied, the toggle plate 50 may be more easily broken at the bent portion 52. Thus, through the toggle plate 50 it is possible to block the transmission of the external force due to the overload over the main portion 56 of the device. Therefore, it is possible to prevent damage to important parts of the facility such as the eccentric shaft.

In the case of the conventional plate plate toggle plate 50, even if the overload is applied to the toggle plate 50 was not properly deformed could not absorb or block the external force. On the other hand, as mentioned, the toggle plate 50 of the present embodiment can be ensured the safety of the device by blocking the transmission of the overload as the bent portion 52 is more elastically deformed and easily broken against the overload.

In the present embodiment, the curved portion 52 may have a structure in which a cross section is curved in an arc shape. The curved radius of curvature of the bend 52 may be variously modified depending on the rigidity of the toggle plate 50 or the design conditions of the device. The bent portion 52 is formed by bending along the x-axis direction. The bends 52 are formed continuously along the direction perpendicular to the force transmission direction, that is, along the z-axis direction in FIG. 2. Thus, when viewed from the z-axis, the toggle plate 50 forms a bent cross section. In addition to the above structure, the bent portion 52 may be formed to be bent at an angle. This structure also allows the curved portion 52 to be deformed to overload easily deformed to absorb or block the impact.

The toggle plate 50 of the present embodiment may include a concave portion 56 and a convex portion 54 to which the bent portion 52 is continuously connected. Thus, the bent portion 52 is convexly curved concave portion 54 and concave downwardly concave portion 56 is formed contiguously to form a cross section, as if the English S-shape. As such, the bent portion 52 is formed by bending in two stages in the form of the recessed portion 56 and the convex portion 54, so that the upper and lower surfaces protrude upward and downward between both ends to achieve a balance. Thus, it is possible to increase the support force of the toggle plate 50 for the swing jaw (30). It is also double bent up and down, so that deformation can be made either way, making it possible to more reliably and effectively absorb and block the impact of overload.

Figure 3 shows another embodiment of the toggle plate, the bent portion 52 may be a structure that is curved throughout the toggle plate 50 along the x-axis direction. Such a structure may also absorb the external force while bending the elastic portion 52 formed as a whole, or may be deformed while blocking the transmission of the external force.

4 shows another embodiment of a toggle plate. In the toggle plate 50 of the present embodiment illustrated in FIG. 4, the recessed portions 56 and the convex portions 54 of the curved portions 52 may be alternately formed to form a wavy structure. In the present embodiment, a plurality of relatively small recesses 56 and convex portions 54 are continuously formed so that the shape of the toggle plate 50 is similar to that of the flat plate as a whole. Thus, it is possible to increase the support force of the toggle plate 50 for the swing jaw (30). In addition, the deformation is made through the plurality of recesses 56 and the convex portion 54, so that the impact against overload can be more reliably and effectively absorbed and blocked.

While the exemplary embodiments of the invention have been illustrated and described as described above, various modifications and other embodiments may be made by those skilled in the art. Such modifications and other embodiments will be considered and included in the appended claims without departing from the true spirit and scope of the invention.

10: frame 20: fixed jaw
30: Swing Jaw 40: Cheek Plate
50: toggle plate 52: bend
54: iron 56: the main part
60: toggle block 70: flywheel
72: eccentric shaft

Claims (6)

A fixed jaw, a swing jaw spaced apart from the fixed jaw to press and crush the object against the fixed jaw, the cheek plate to block both ends between the fixed jaw and the swing jaw, the drive for rocking the swing jaw, the swing Jaw crusher safety device that includes a toggle plate supporting the bottom of the jaw,
The toggle plate is a jaw crusher safety device formed at least one side bent along the direction of force transmission to form a bent portion. The method of claim 1,
The bend portion jaw crusher safety device continuously formed along the direction perpendicular to the force transmission direction. The method according to claim 1 or 2,
The bent portion jaw crusher safety device curved in the form of an arc. The method according to claim 1 or 2,
Jaw crusher safety device of the bent structure is bent. The method of claim 3, wherein
The bent portion jaw crusher safety device including a concave and concave portion continuously connected. The method of claim 5,
The bent portion jaw crusher safety device of the plurality of recesses and convex portion is continuous to form a waveform.

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