Jaw crusher

Abstract

The utility model discloses a jaw crusher which comprises a crushing box, a fixed jaw plate is fixedly connected in the crushing box, a flywheel is rotatably connected to the crushing box, an eccentric shaft is fixedly connected to the flywheel, a movable jaw plate is rotatably connected to the eccentric shaft, two bases are fixedly connected to the two sides of the crushing box respectively, and movable seats are slidably connected to the bases. A piston rod of the air cylinder is fixedly connected with a pressing frame, and the pressing frame is slidably connected into a square hole formed in the side face of the crushing box. The utility model has the beneficial effects that the two pressing frames circularly press downwards, so that the problem of material returning during extrusion can be prevented, and meanwhile, the pressing frames press downwards, so that crushed stones can be improved, and the discharging efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of jaw crusher technology, and specifically to a jaw crusher. Background Technology

[0002] Jaw crushers, widely used in crushing equipment, consist of a movable jaw plate and a static jaw plate. The movement of the jaw plates simulates the crushing operation of materials. During the material handling process, the phenomenon of material flying out of the feed inlet without being squeezed is called backflow. The causes of backflow in jaw crushers are multifaceted. Since jaw crushers typically use conveyor belts for feeding, the material on the conveyor belt is usually coarse material that has undergone coarse processing, with significant differences in shape and size. Therefore, the feed rate of the conveyor belt cannot be guaranteed to be constant, resulting in inconsistent feeding. Overfeeding leads to material accumulation between the two jaw plates. Due to the certain opening angle between the two jaw plates, the stone material backflows upwards during the crushing process, which may even cause irreversible damage to the jaw plates, reducing the service life of the jaw crusher. At the same time, backflow affects the overall crushing efficiency of the jaw crusher, posing a problem. Utility Model Content

[0003] In view of the deficiencies in the existing technology, this utility model provides a jaw crusher to solve the existing problems.

[0004] This utility model is achieved through the following technical solution: a jaw crusher, including a crushing box, a fixed jaw plate fixedly connected inside the crushing box, a flywheel rotatably connected to the crushing box, an eccentric shaft fixedly connected to the flywheel, a movable jaw plate rotatably connected to the eccentric shaft, a base fixedly connected to each side of the crushing box, a movable seat slidably connected to the base, a cylinder fixedly connected to the movable seat, a pressure frame fixedly connected to the piston rod of the cylinder, and the pressure frame slidably connected to a square hole opened on the side of the crushing box.

[0005] Preferably, two mounting seats are fixedly connected to the base, an optical axis is fixedly connected between the two mounting seats, a lead screw is rotatably connected between the two mounting seats, the movable seat is slidably connected to the optical axis, and the movable seat is threadedly connected to the lead screw.

[0006] Preferably, a servo motor is fixedly connected to the base, a second gear is fixedly connected to the shaft of the servo motor, the second gear meshes with the first gear, and the first gear is fixedly connected to one end of the lead screw.

[0007] Preferably, the two pressure frames that are slidably connected on the crushing box are installed in a staggered manner and do not contact each other.

[0008] The beneficial effects of this utility model are reflected in the fact that the two pressure frames press down in a cycle, which can prevent the problem of material backflow during extrusion, and at the same time, the pressing down of the pressure frames can improve the discharge efficiency of crushed stone. Attached Figure Description

[0009] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0012] Figure 3 This is a top view of the structure of this utility model;

[0013] Figure 4 This utility model Figure 3 Cross-sectional view at point AA.

[0014] In the attached diagram, 1 is the servo motor, 2 is the first gear, 3 is the optical shaft, 4 is the pressure frame, 5 is the flywheel, 6 is the eccentric shaft, 7 is the moving jaw plate, 8 is the mounting base, 9 is the lead screw, 10 is the base, 11 is the crushing box, 12 is the fixed jaw plate, 13 is the cylinder, 14 is the moving seat, and 15 is the second gear. Detailed Implementation

[0015] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0016] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0017] For ease of explanation, spatial relative terms such as “up,” “down,” “left,” and “right” may be used herein to describe the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, an element described as being “down” of other elements or features would be positioned “up” of those other elements or features. Therefore, the exemplary term “down” can encompass both up and down orientations.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0019] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific implementation of this utility model will be described in detail below with reference to specific embodiments: such as Figures 1-4 The present invention is achieved through the following technical solution: A jaw crusher includes a crushing box 11, a fixed jaw plate 12 fixedly connected inside the crushing box 11, a flywheel 5 rotatably connected to the crushing box 11, an eccentric shaft 6 fixedly connected to the flywheel 5, and a movable jaw plate 7 rotatably connected to the eccentric shaft 6. This is a common jaw crusher. To clearly indicate the position of the pressure plate 4, the positions of the fixed jaw plate 12 and the movable jaw plate 7 are briefly described. A base 10 is fixedly connected to each side of the crushing box 11. A movable seat 14 is slidably connected to the base 10. A cylinder 13 is fixedly connected to the movable seat 14. The piston rod of the cylinder 13 is fixedly connected to the pressure frame 4. The pressure frame 4 is slidably connected in a square hole opened on the side of the crushing box 11. The pressure plate 4 is located between the movable jaw plate 7 and the fixed jaw plate 12.

[0020] Two mounting seats 8 are fixedly connected to the base 10, an optical axis 3 is fixedly connected between the two mounting seats 8, and a lead screw 9 is rotatably connected between the two mounting seats 8. The movable seat 14 is slidably connected to the optical axis 3 and threadedly connected to the lead screw 9.

[0021] A servo motor 1 is fixedly connected to the base 10. A second gear 15 is fixedly connected to the shaft of the servo motor 1. The second gear 15 meshes with the first gear 2. The first gear 2 is fixedly connected to one end of the lead screw 9.

[0022] The two pressure frames 4 on the crushing box 11 are installed in a staggered manner and do not contact each other.

[0023] The working principle of this utility model is as follows: When in use, a support can be placed at the bottom of the crusher to raise the crusher according to the actual situation. Then, the stones are put into the crushing box 11, the crusher is started, and the moving jaw plate 7 cooperates with the fixed jaw plate 12 to squeeze the stones. After the stones are added, the cylinder 13 is started to raise the pressure plate 4 to a high position. The left servo motor 1 is started, and the servo motor 1 drives the second gear 15 to rotate, which in turn drives the first gear 2 and the lead screw 9 to rotate. The rotation of the lead screw 9 drives the moving seat 14, the cylinder 13 and the pressure frame 4 to move into the crushing box 11. The pressure frame 4 completely covers the stones and moves down with the stones to prevent the stones from returning. During the downward movement of the left pressure frame 4, the right pressure frame 4 completes the same operation as the left pressure frame 4, so that the continuously entering stones are constantly pressed down by the pressure frame. When the left pressure frame 4 reaches the bottom of the through hole of the crushing box 11, the cylinder 13 stops, the servo motor 1 is started to reverse, and the pressure frame 4 is pulled out of the crushing box 11. After being pulled out, the pressure frame 4 rises with the cylinder 13 and repeats the previous process. The right pressure frame 4 does the same, and the cycle continues.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A jaw crusher comprising a crushing box (11), characterized in that: The fixed jaw plate (12) is fixedly connected in the crushing box (11), the flywheel (5) is rotationally connected on the crushing box (11), the eccentric shaft (6) is fixedly connected on the flywheel (5), the moving jaw plate (7) is rotationally connected on the eccentric shaft (6), one base (10) is fixedly connected on the two sides of the crushing box (11), the moving seat (14) is slidingly connected on the base (10), the cylinder (13) is fixedly connected on the moving seat (14), the piston rod of the cylinder (13) is fixedly connected with the pressing frame (4), and the pressing frame (4) is slidingly connected in the square hole formed on the side of the crushing box (11).

2. A jaw crusher as claimed in claim 1, characterized in that: Two mounting seats (8) are fixedly connected on the base (10), the optical shaft (3) is fixedly connected between the two mounting seats (8), the lead screw (9) is rotationally connected between the two mounting seats (8), the moving seat (14) is slidingly connected with the optical shaft (3), and the moving seat (14) is threadedly connected with the lead screw (9).

3. A jaw crusher as claimed in claim 2, characterized in that: The servo motor (1) is fixedly connected on the base (10), the second gear (15) is fixedly connected on the rotating shaft of the servo motor (1), the first gear (2) is meshingly connected with the second gear (15), and the first gear (2) is fixedly connected on one end of the lead screw (9).

4. A jaw crusher as claimed in claim 1, characterized in that: The two pressing frames (4) slidingly connected on the crushing box (11) are installed in a staggered manner and do not contact each other.

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