WO1999034922A1

WO1999034922A1 - A jaw crusher

Info

Publication number: WO1999034922A1
Application number: PCT/CN1999/000003
Authority: WO
Inventors: Kangping Zheng
Original assignee: Wu, Yaohui
Priority date: 1998-01-08
Filing date: 1999-01-07
Publication date: 1999-07-15
Also published as: AU1867099A

Abstract

The invention relates to a jaw crusher, including a frame (1), a flywheel (5) rotationally supported on the frame (1) by an eccentric shaft (6), two crushing mechanisms (21, 22) which have the same structure and symmetrically separately arranged in two sides of the axis of the shaft (6). The crushing capability and efficiency of the crusher can be increased because there are two crushing chambers in the crusher and the free-running stroke of the eccentric shaft is relieved.

Description

A jaw crusher

technical field

The present invention relates to a type crusher, comprising: a body; a flywheel rotatably supported on the body through an eccentric shaft.

Background technique

For a long time, people have made various improvements to the jaw crushing process equipment, thus forming two series of products: complex swing and simple swing. Complex oscillating crushers are widely used due to their simple structure and low price. In terms of technology, this kind of crusher adopts advanced auxiliary impact plate and hydraulic adjustment and protection devices, so it has high technical content in structure, convenient operation, and a certain improvement in crushing efficiency. However, the operating mechanism has the disadvantages of complex structure, high maintenance cost, and high cost. The key is that this kind of crusher has no obvious improvement in reducing energy consumption and increasing production, and it cannot get rid of the state of intermittent work, and has no outstanding advantages in the case of increasing energy costs.

The current jaw crushers only have one set of crushing mechanism, and according to the law of circular motion, when the eccentric shaft acts on the movable jaw plate driven by the flywheel to make it swing left and right, the swing amplitude to both sides is the same. At the same time, the force is the same. In this way, only one side of the existing jaw crusher is doing work, while the swing of the other side becomes an idling stroke.

Contents of the invention

The object of the present invention is to provide a jaw crusher, which eliminates the idling stroke of the eccentric shaft during the operation of the crusher.

In order to achieve the purpose of the above invention, the technical solution according to the present invention provides a jaw crusher, including: a body; a flywheel rotatably supported on the body through an eccentric shaft; Crushing mechanisms on both sides of the wheel axis.

The crushing mechanism includes a movable jaw swingably suspended on the machine body by a suspension pestle, an eccentric shaft passes through the upper part of the movable jaw to be movably supported on the eccentric shaft, the lower part of the movable jaw is connected to one end of the push plate Hinged, the other end of the push plate is connected to the movable jaw One end of the upper connecting rod is hinged, and the connecting rod is guided by the slide rail or guide roller on the center cage; a pair of fixed jaw plates, the upper end of the fixed collar plate is hingedly connected with the body, and the lower end is supported on the body through a protective push plate Above; the movable jaw further includes a slider arranged at the eccentric position of the eccentric shaft and slidingly connected with the movable jaw, and the other end of the connecting pestle is fixedly connected with the slider.

Needle rollers are arranged between the slide block and the groove on the inner side of the upper end of the matching movable jaw plate. A backing plate is provided at the hinged position of the movable jaw plate and the push plate or the hinged position of the connecting pestle and the described push plate. A liner plate is provided at the position where the lower end area of the fixed jaw plate or the inner side of the lower end of the body are respectively hinged with the two ends of the protection push plate.

The crushing mechanism includes a movable jaw plate movably supported on the eccentric shaft by an eccentric shaft passing through its upper part, the lower part of the movable jaw plate is hinged to one end of the push plate, and the other end of the push plate is hinged to the On the center cage on the bottom, there are a pair of fixed jaws, the upper end of the fixed jaws is hingedly connected with the body, and the lower end is supported on the body through a protective push plate; There are rolling bearings.

A backing plate is provided at the hinged position of the movable jaw plate and the push plate or the hinged position of the connecting rod and the push plate. A backing plate is provided at the position where the lower end area of the fixed jaw plate or the inner side of the lower end of the body are respectively hinged with the two ends of the protection push plate.

The crusher according to the present invention includes an integral movable jaw, which is designed to be double-sided symmetrical. The symmetrical movable jaws and the fixed jaws on both sides of the body form two crushing chambers with the same function. During each rotation of the eccentric shaft, the two crushing chambers on both sides of the eccentric shaft work separately, that is, when the movable jaw swings to the left, the left crushing chamber crushes the material; similarly, when the movable jaw When swinging to the right, the crushing cavity on the right works. In this way, since there is no idle stroke during the rotation of the eccentric shaft, the crushing capacity of the crusher is effectively improved; the power of the machine is fully utilized.

In order to make the movable jaw plate transmit the force of the eccentric shaft to the greatest extent, maintain balance and stability in the swing, and reduce maintenance costs, the swing and manipulation mechanism is set in the movable jaw plate with the simplest structure, and the connecting rod and push plate With the cooperation of the cage, the movable jaw is manipulated so that It is very effective to convert the power from the eccentric shaft into continuous and uninterrupted crushing work. The bracket type cage installed in the center of the lower part of the body also plays a great role in improving the strength of the body like a beam. The guide roller or slide rail type cage can also support the connecting pestle and push plate well to make it work normally. According to the different materials to be crushed, through different configurations of connecting rods, push plates and cages, two different working modes of simple swing and complex swing can be realized, that is, simple swing and complex swing can be made. Crusher. In the so-called single swing crusher, the trajectory of the movable jaw plate is a linear reciprocating motion; while in the so-called complex swing crusher, the trajectory of the movable jaw plate is elliptical. The movement of the movable jaw plate in the crushing cavity is two parts up and down. During continuous operation, the crushing points are concentrated and the force bearing surface is small, thereby reducing the load on the eccentric shaft and making the operation of the crusher according to the present invention more stable.

The discharge adjustment device of the continuous working jaw crusher is set on the back of the fixed jaw plate, and is protected by a set of push plates from overload. Without stopping the machine, the discharge port can be increased or decreased by adjusting the adjusting lever equipped with bevel gear. When there are unbreakable objects in the crushing cavity, such as hard debris such as iron blocks, the push plate will break due to overload, thereby protecting other parts from being damaged. Compared with jaw crushers in the prior art, the continuous working jaw crusher according to the present invention is simpler in structure, and thus easier to repair and maintain.

Figure overview

The structure of the jaw crusher according to the present invention will be further described in detail in conjunction with the embodiments shown in the accompanying drawings, and other advantages and effects of the present invention will be further clarified along with the following description. in:

Fig. 1 shows a partial cross-sectional view of a single-oscillating continuous working jaw crusher according to the present invention, wherein the structure of connecting rods guided by slide rails is shown;

Figure 2 shows a sectional view of a complex oscillating continuous working jaw crusher according to the present invention;

Fig. 3 shows a partial sectional view of a simple oscillating continuous working jaw crusher according to the present invention, in which the structure of guiding the connecting rod with a guide roller bracket is highlighted. Description of Specific Embodiments

In the following description based on the drawings, the same reference numerals are used for the same components. As shown in Fig. 1, the working principle of the simple oscillating continuous working jaw crusher according to the present invention is the same as that of the prior art crushers. However, in order to achieve the purpose of the present invention, a pair of crushing chambers 21, 22 are provided in the embodiment shown in FIG. 1 . Since the structures of the two crushing chambers are symmetrical, only the crushing chamber on the right side of the figure is shown in section in Fig. 1 for the sake of clarity. As shown in the figure, the movable jaw plate 7 is swingably suspended or supported under the central bearing seat of the machine body 1 by a suspension rod 19. The movable jaw plate 7 is in an inverted V shape, and its inclined outer side is the working surface for crushing materials. The inner side of the V-shaped bottom is provided with a groove for cooperating with the slider 15, and the slider 15 is slidably arranged in the groove. In order to reduce the friction between the groove on the movable jaw 7 and the slider 15, a needle roller 18 is provided between the two. The upper end of a connecting rod 8 extending vertically downward is fixedly connected with the lower end of the slider 15. The connecting rod 8 is guided by the guide groove on the center cage 9, and moves up and down under the drive of the slider 15. At the lower part of the movable jaw 7, that is, the open side of the V shape, and the inner side of the movable jaw 7, there is a connecting part for receiving and hingedly connecting the push plate 10. A position for receiving the push plate 10 and being hingedly connected with it is also provided on the corresponding position of the connecting rod 8. Corresponding parts of the push plate 10 and the movable jaw plate 7 matched with it and the connecting pestle 8 are provided with an easily replaceable backing plate for reducing frictional force.

In the embodiment shown in Figure 1, the eccentric shaft 6 rotates under the drive of the flywheel 5, and when the maximum eccentricity of the eccentric shaft 6 is located at two points on the left and right in the horizontal direction shown in the figure, the slider 15 will push the movable jaw The upper end of the plate 7 swings left and right, that is, the left and right working surfaces of the movable plate 7 reciprocate in the horizontal direction, thereby squeezing and crushing the material to be crushed. When the eccentric shaft 6 rotates to the up and down position shown in the figure, the slide block 15 will push the connecting rod 8 to move up and down under the guidance of the guide rail on the center holder. The lower end of the connecting rod 8 drives the push plate 10 hinged thereto to move, thereby driving the lower end of the movable jaw plate 7 to swing left and right. It can be clearly seen from the figure that since the crusher according to the present invention adopts two crushing chambers, the movable jaw plate 7 is guaranteed to continuously swing in the two crushing chambers during the entire rotation process of the eccentric shaft 6, There is no idle travel. This structure ensures that the root The working efficiency of the crusher according to the invention is double that of the crusher in the prior art.

According to the present invention, the movable jaw plate 7 in the single-oscillating jaw crusher with continuous working barrel is suspended under the bearing seat on the machine body 1 through the suspension rod 19, so the eccentric shaft 6 basically does not bear the movable jaw during the working process. The weight of plate 7, but drives the upper and lower ends of movable jaw plate 7 to make it swing left and right by the slide block 15 that has connecting pestle 8. During one revolution of the eccentric shaft 6, its maximum eccentricity can be respectively located at the leftmost and rightmost horizontally, and the upper and lower limit positions in the vertical direction. Corresponding to these four limit positions, the upper left part, lower left part or upper right part, and lower right part of the movable jaw plate 7 are respectively in working state, that is, these parts work in turn. In this way, during the rotation of the eccentric shaft 6, there is always a point in the crusher that is in working condition, so the crushing points are concentrated and the load is small. The left or right swing of the movable jaw plate 7 forms a horizontal squeeze on the material, so that the geometric retention rate of the crushed product is high, the crushing vibration is small, the power loss is low, and the lining tooth plate 17 wears less, and finally prolongs the service life of the crusher.

The continuous working jaw crusher shown in Fig. 1 is a complex swinging crusher, that is, the movement track of the movable jaw plate 7 is an ellipse. As shown in the figure, in this embodiment, there is no connecting rod 8 as shown in FIG. The movable jaw plate 7 is supported by the eccentric part of the eccentric shaft 6. A needle roller 18 for reducing friction is also provided between the eccentric shaft 6 and the movable jaw 7. In this embodiment, one end of the push plate 10 is hinged to the central cage 9 fixed on the body 1.

When the flywheel 5 drives the eccentric shaft 6 to rotate, the upper end of the movable jaw plate 7 makes a circular motion, while its lower end makes an elliptical motion driven by the inclined push plate 10 and the beam-type central cage as fulcrums. In this embodiment, the crushing forces at the upper and lower ends of the movable jaw plate 7 of the continuously working jaw crusher are opposite during the swing. As shown in Figure 2, when the maximum eccentricity of the eccentric shaft 6 driven by the flywheel 5 is on the left side of the horizontal position in the figure, the lower end of the movable jaw plate 7 is in the middle position. When the eccentric shaft 6 continues to rotate from left to right (that is, clockwise) so that the maximum eccentricity is at the horizontal right side, the movable jaw 7 will swing to the right to the limit position under the joint action of the center cage and the push plate 10 and then return its median place. When the maximum eccentricity of the eccentric shaft 6 continues to rotate clockwise to the leftmost position, the movable jaw plate 7 also swings to the left end position and then returns to its middle position. Same as the above-mentioned simple swinging jaw crusher, in the process of one revolution of the eccentric shaft 6, one of the above-mentioned four positions is always in working state, so the flywheel 5 has no idling stroke, and the crushing work is continuous. Compared with the existing crusher, the advantage of the continuous working jaw crusher according to the present invention is that: Although the upper and lower ends of the movable jaw plate 7 move in the same direction, but the direction of force is opposite, so that the eccentric shaft 6 only bears half of the force. The crushing load, so its life can be extended. The complex swing of the movable jaw produces a combined effect of grinding and extrusion on the materials in the crushing cavity, which has a better effect on materials with high crushing hardness and no strict requirements for products.

Claims

right to

1. A jaw crusher, comprising: a body (1); a flywheel (5) rotatably supported on the body (1) through an eccentric shaft (6); it is characterized in that it also includes two groups of identical and symmetrical structures Crushing mechanisms arranged on both sides of the axis of the eccentric wheel (6)

(21, 22).

2. The jaw crusher according to claim 1, characterized in that, the crushing mechanism (21, 22) comprises a movable jaw plate ( 7), the eccentric shaft (6) passes through the upper part of the movable jaw plate (7) to be movably supported on the eccentric shaft (6), the lower part of the movable jaw plate (7) and the push plate

One end of (10) is hinged, the other end of the push plate (10) is hinged with one end of the connecting pestle (8) connected to the movable jaw plate (7), and the connecting rod (8) is held by the center cage (9) Guided by slide rails or guide rollers; a pair of fixed jaws (3), the upper end of the fixed jaws (3) is hingedly connected with the machine body (1), and its lower end is supported on the machine body by a protective push plate (2)

(1); the movable jaw (7) also includes a slider (15) arranged at the eccentric position of the eccentric shaft (6) and slidingly connected with the movable jaw (7), and the connecting rod (8 ) is fixedly connected with the slider (15).

3. The jaw crusher according to claim 2, characterized in that, a needle roller is provided between the sliding block (15) and the groove on the inner side of the upper end of the matching movable jaw plate (17).

4. The jaw crusher according to claim 2, characterized in that, at the hinged position of the movable jaw plate (17) and the push plate (10) or the connecting rod (8) and the push plate ( 10) A backing plate is provided at the hinged position.

5. The jaw crusher according to claim 2, characterized in that, the lower end area of the fixed jaw plate (3) or the inner side of the lower end of the machine body (1) are respectively hinged to the two ends of the protective push plate (2) There is a backing plate on the part.

6. The jaw crusher according to claim 1, characterized in that, the crushing mechanism (21, 22) includes an eccentric shaft (6) running through its upper part to be movably supported The movable jaw plate (7) supported on the eccentric shaft (6), the lower part of the movable jaw plate (7) is hinged to one end of the push plate (10), and the other end of the push plate (10) is hinged to the body (1 ) on the center cage (9) on the bottom, a pair of fixed jaw plates (3), the upper end of the fixed jaw plate (3) is hingedly connected with the body (1), and its lower end is supported on the body ( 1) above; a rolling bearing is provided between the movable jaw plate (7) and the eccentric shaft (6).

7. The jaw crusher according to claim 6, characterized in that, at the hinged position of the movable jaw plate (17) and the push plate (10) or the connecting rod (8) and the push plate ( 10) A backing plate is provided at the hinged position.

8. The jaw crusher according to claim 6, characterized in that, the lower end area of the fixed jaw plate (3) or the inner side of the lower end of the machine body (1) are respectively hinged to the two ends of the protective push plate (2) There is a backing plate on the part.