A crusher with overload protection device

Abstract

This utility model relates to the field of crushing equipment technology, specifically disclosing a crusher with an overload protection device, including a base plate, a stabilizing structure, a bearing plate, a crusher body, and an overload protection screening structure. Two stabilizing structures are respectively provided on both sides of the base plate. The crusher body is fixedly connected to the upper surface of the base plate. A bearing plate is provided above the base plate, and an overload protection screening structure is provided on the upper surface of the bearing plate. The overload protection screening structure includes a bottom box, a screening frame, a guide hopper, and a vibrating motor. The screening frame is fixedly connected to the upper surface of the bottom box, and a guide hopper is provided below the screening frame, located inside the bottom box. A vibrating motor is fixedly connected to the outer surface of one end of the screening frame. By providing a base plate, stabilizing structure, and locking casters, the stabilizing plate is raised and lowered, ensuring the equipment is tightly fitted to the ground. This ensures the crusher will not shift due to vibration or external force during operation, effectively improving the ease of movement of the crusher and enhancing its overall stability.

Description

Technical Field

[0001] This utility model relates to the field of crushing equipment technology, and in particular to a crusher with an overload protection device. Background Technology

[0002] Crusher plays a vital role in many industries such as mining, building materials production, metallurgy, and water conservancy and hydropower. It is used for medium and fine crushing of materials with medium and high hardness, such as metal ores, basalt, granite, pebbles, and limestone.

[0003] However, traditional crushers have the following problems in long-term use. On the one hand, existing crushers are large in size and heavy in weight, making them inconvenient to move according to the workplace, which reduces the convenience of crusher movement. On the other hand, in the material feeding stage, there is a lack of effective screening and flow control mechanisms. The particle size of the material entering the crusher is different and the flow rate is unstable. When a large amount of excessive or oversized material floods into the crusher, it is easy to overload the crusher, which seriously affects the normal operation of the crusher, or even causes equipment failure and shutdown, increases the maintenance frequency, and reduces production efficiency. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a crusher with an overload protection device.

[0005] The crusher with overload protection device provided by this utility model includes: a base plate, a stabilizing structure, a bearing plate, a crusher body, and an overload protection screening structure. Two stabilizing structures are respectively provided on both sides of the base plate. Each stabilizing structure includes a mounting plate, a threaded rod, and a stabilizing plate. One end of the mounting plate is fixedly connected to the outer surface of the base plate. A threaded hole is opened on the upper surface of the mounting plate, and a threaded rod is threadedly connected inside the threaded hole. The lower end of the threaded rod is rotatably connected to the stabilizing plate. The crusher body is fixedly connected to the upper surface of the base plate. A bearing plate is provided above the base plate. An overload protection screening structure is provided on the upper surface of the bearing plate. The overload protection screening structure includes a bottom box, a screening frame, a guide hopper, and a vibrating motor. A screening frame is fixedly connected to the upper surface of the bottom box, and a guide hopper is provided below the screening frame, located inside the bottom box. A vibrating motor is fixedly connected to the outer surface of one end of the screening frame.

[0006] Preferably, four locking casters are installed on the lower surface of the base plate, and a connecting rod is fixedly connected to the upper surface of the base plate, with the upper end of the connecting rod fixedly connected to the lower surface of the support plate.

[0007] Preferably, a rotating wheel is fixedly connected to the upper end of the threaded rod, and a rocker arm is fixedly connected to the upper surface of the rotating wheel.

[0008] Preferably, two ear plates are fixedly connected to the outer surface of one end of the bottom box, and through holes are opened on the side surface of both ear plates. Through holes are opened on the outer surface of both ends of the bottom box, and inlet and outlet grooves are opened on the side surface of the bottom box. Four rubber shock-absorbing pads are fixedly connected to the lower surface of the bottom box, and springs are fixedly connected to the lower surface of the rubber shock-absorbing pads. Rubber shock-absorbing seats are fixedly connected to the lower ends of the springs, and the lower surface of the rubber shock-absorbing seats is fixedly connected to the upper surface of the support plate.

[0009] Preferably, the bottom of the screening frame is provided with a screening hole, and the end of the screening frame away from the vibrating motor is provided with a discharge port.

[0010] Preferably, the discharge end of the guide hopper extends through the inlet / outlet groove on the side surface of the bottom box to above the feed inlet of the crusher body. Rotating rods are fixedly connected to the outer surfaces of both ends of the guide hopper. The rotating rods on the outer surfaces of both ends of the guide hopper are rotatably connected to the through holes on the outer surfaces of both ends of the bottom box. A worm gear is fixedly connected to one end of the rotating rod on the outer surface of one end of the guide hopper. A worm is meshed below the worm gear. The two ends of the worm are rotatably connected to the through holes on the side surfaces of two ear plates. A servo motor is provided at one end of the worm. The power output end of the servo motor is fixedly connected to one end of the worm. One side of the servo motor is fixedly connected to the outer surface of the bottom box.

[0011] Compared with related technologies, the crusher with overload protection device provided by this utility model has the following beneficial effects:

[0012] 1. Equipped with a base plate, a stabilizing structure, and locking casters, the locking casters on the lower surface of the base plate allow the equipment to move flexibly in different work sites when unlocked, adapting to diverse work scenarios. Once the equipment reaches the designated position, the casters are locked, and the threaded rods in the stabilizing structure are adjusted to raise and lower the stabilizing plate, ensuring that the equipment is tightly attached to the ground. This ensures that the crusher will not shift due to vibration or external forces during operation, effectively improving the convenience of moving the crusher and enhancing its overall stability.

[0013] 2. By incorporating an overload-resistant screening structure, the vibrating motor drives the screening frame to generate high-frequency vibration, allowing the material to move fully within the screening frame. The screening frame can screen out materials that do not meet the particle size requirements, preventing them from entering the crusher and reducing the risk of the crusher overloading due to processing excessively large materials. At the same time, when the crusher is overloaded, the servo motor drives the guide hopper to change its tilt angle, reducing the material flow rate and effectively preventing overload caused by excessive material. This greatly improves the operational stability of the crusher under complex material conditions, reduces the probability of equipment damage due to overload, lowers the maintenance frequency, and improves production efficiency. Attached Figure Description

[0014] Figure 1 A schematic diagram of a preferred embodiment of the crusher with overload protection device provided by this utility model;

[0015] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0016] Figure 3 This is an exploded structural diagram of the present invention;

[0017] Figure 4 For the present utility model Figure 3 A magnified structural diagram of point A in the middle.

[0018] The following are the labeling elements in the diagram: 1. Base plate; 2. Stabilizing structure; 3. Bearing plate; 4. Crusher body; 5. Overload protection screening structure; 6. Mounting plate; 7. Threaded rod; 8. Stabilizing plate; 9. Base box; 10. Screening frame; 11. Guide hopper; 12. Vibrating motor; 13. Locking caster wheel; 14. Connecting rod; 15. Rotary wheel; 16. Rocker arm; 17. Ear plate; 18. Rubber damping pad; 19. Spring; 20. Rubber damping seat; 21. Rotating rod; 22. Worm gear; 23. Worm; 24. Servo motor. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please refer to the following: Figure 1 , Figure 2 and Figure 3The system includes: a base plate 1, a stabilizing structure 2, a bearing plate 3, a crusher body 4, and an overload prevention screening structure 5. Two stabilizing structures 2 are installed on each side of the base plate 1. The base plate 1 bears the entire weight of the equipment, ensuring stable placement. The stabilizing structures increase the stability of the base plate 1. Each stabilizing structure 2 includes a mounting plate 6, a threaded rod 7, and a stabilizing plate 8. One end of the mounting plate 6 is fixedly connected to the outer surface of the base plate 1. A threaded hole is opened on the upper surface of the mounting plate 6, and a threaded rod 7 is threadedly connected inside the threaded hole. When the threaded rod 7 rotates, it connects to the threaded hole on the upper surface of the mounting plate 6, allowing the threaded rod 7 to rise and fall. The lower end of the threaded rod 7 is rotatably connected to the stabilizing plate 8. When the threaded rod 7 rises and falls, it can drive the stabilizing plate 8 to rise and fall, allowing the stabilizing plate 8 to contact or detach from the ground. The crusher body 4 is fixedly connected to the upper surface of the base plate 1. The crusher body 4 crushes the incoming materials. A support plate 3 is provided above, and an overload protection screening structure 5 is provided on the upper surface of the support plate 3. The support plate 3 is used to support the overload protection screening structure 5. The overload protection screening structure 5 screens the feed material, controls the particle size and flow rate of the material entering the crusher, and prevents the crusher from being overloaded due to excessive material size or quantity. The overload protection screening structure 5 includes a bottom box 9, a screening frame 10, a guide hopper 11, and a vibrating motor 12. The screening frame 10 is fixedly connected to the upper surface of the bottom box 9, and the guide hopper 11 is provided below the screening frame 10. The guide hopper 11 is located inside the bottom box 9. The vibrating motor 12 is fixedly connected to the outer surface of one end of the screening frame 10. The vibrating motor 12 is electrically connected to an external power source. When the vibrating motor 12 is started, the vibrating motor 12 vibrates, which in turn drives the screening frame 10 to vibrate. At the same time, the screening frame 10 transmits the vibration through the bottom box 9 to the guide hopper 11, so that the guide hopper 11 conveys the material under vibration.

[0021] In the specific implementation process, four locking casters 13 are installed on the lower surface of the base plate 1. The locking casters 13 are used to make the base plate 1 easy to move when unlocked, and to make the base plate 1 fixed and stable when locked, so as to facilitate the movement and positioning of the equipment in different work sites. A connecting rod 14 is fixedly connected to the upper surface of the base plate 1. The upper end of the connecting rod 14 is fixedly connected to the lower surface of the support plate 3. The connecting rod 14 is used to connect the support plate 3 and the base plate 1.

[0022] The upper end of the threaded rod 7 is fixedly connected to a rotating wheel 15, and a rocker arm 16 is fixedly connected to the upper surface of the rotating wheel 15. By manually operating the rocker arm 16 to rotate the rotating wheel 15, the threaded rod 7 is driven to rotate, which makes it easy to adjust the height of the stabilizing plate 8. At the same time, the stabilizing plate 8 can be independently controlled to adhere to the ground according to the flatness of the ground, so that the base plate 1 remains stable.

[0023] Two ear plates 17 are fixedly connected to the outer surface of one end of the bottom box 9. Both ear plates 17 have through holes on their side surfaces. Both ends of the bottom box 9 have through holes on their outer surfaces. The bottom box 9 has inlet and outlet grooves on its side surfaces. Four rubber damping pads 18 are fixedly connected to the lower surface of the bottom box 9. Springs 19 are fixedly connected to the lower surface of the rubber damping pads 18. The springs 19 are used to amplify the vibration generated by the screening frame 10 on the upper surface of the bottom box 9. A rubber damping seat 20 is fixedly connected to the lower end of the springs 19. The lower surface of the rubber damping seat 20 is fixedly connected to the upper surface of the support plate 3. The rubber damping pads 18 on the lower surface of the bottom box 9 are connected to the rubber damping seat 20 through the springs 19. The rubber damping pads 18 and the rubber damping seat 20 absorb the vibration energy during the screening process, reduce equipment resonance, and extend service life.

[0024] The screening frame 10 has screening holes at its bottom and a discharge port at the end away from the vibrating motor 12. The screening holes at the bottom of the screening frame 10 are used to screen the material. Material smaller than the screening holes passes through, while material larger than the screening holes is retained. The discharge port at the end of the screening frame 10 away from the vibrating motor 12 is used to discharge the larger particle size after screening, which can be returned for preliminary crushing or further processing.

[0025] The discharge end of the guide hopper 11 extends through the inlet / outlet groove on the side surface of the bottom box 9 to above the feed inlet of the crusher body 4. The discharge end of the guide hopper 11 can move inside the inlet / outlet groove on the side surface of the bottom box 9. By adjusting the tilt angle of the guide hopper 11, the flow rate of material falling into the feed inlet of the crusher body 4 can be controlled, thus achieving overload protection. When the crusher load is too high, the angle of the guide hopper 11 can be reduced to reduce the feed rate. Rotating rods 21 are fixedly connected to the outer surfaces of both ends of the guide hopper 11. The rotating rods 21 on the outer surfaces of both ends of the guide hopper 11 are rotatably connected to the through holes on the outer surfaces of both ends of the bottom box 9. A worm gear 22 is fixedly connected to one end of the rotating rod 21 on the outer surface of one end of the guide hopper 11. When the worm gear 22 rotates, it can drive the rotating rod 21 on the outer surface of one end of the guide hopper 11 to rotate inside the through hole on the outer surface of one end of the bottom box 9. At the same time, the rotating rod 21 on the other end of the guide hopper 11 rotates inside the through hole on the outer surface of one end of the bottom box 9. The other end of the box 9 rotates inside the through hole on its outer surface, which in turn drives the guide hopper 11 to rotate around the rotating rod 21 as an axis, adjusting the tilt angle of the discharge end of the guide hopper 11. A worm 23 meshes below the worm wheel 22. When the worm 23 rotates, it can drive the worm wheel 22 to rotate. At the same time, the worm 23 has a limiting function on the worm wheel 22 to prevent the worm wheel 22 from rotating on its own. The two ends of the worm 23 are respectively rotatably connected to the through holes on the side surfaces of the two ear plates 17. The worm 23 can rotate inside the through holes on the side surfaces of the two ear plates 17. A servo motor 24 is provided at one end of the worm 23. The power output end of the servo motor 24 is fixedly connected to one end of the worm 23. One side of the servo motor 24 is fixedly connected to the outer surface of the bottom box 9. The servo motor 24 is electrically connected to an external power supply. When the servo motor 24 is started, the power output end of the servo motor 24 rotates and drives the worm 23 to rotate.

[0026] The working principle of this utility model is as follows: First, using the locking caster 13 on the lower surface of the base plate 1, the crusher body 4 is moved to a suitable working site. After reaching the designated position, the locking caster 13 is locked to prevent it from moving. Then, the rocker arm 16 is manually held and the rotating wheel 15 is rotated. When the rotating wheel 15 rotates, it drives the threaded rod 7 to rotate. Since the threaded rod 7 is threadedly connected to the threaded hole on the mounting plate 6, the threaded rod 7 will rise and fall axially, thereby driving the lower end of the stabilizing plate 8 to rise and fall. According to the flatness of the ground, the height of each stabilizing plate 8 can be independently adjusted to make it fit tightly against the ground, further enhancing the overall stability of the base plate 1. The material to be crushed is then poured into the screening. Inside frame 10, vibrating motor 12 is electrically connected to an external power source. When vibrating motor 12 is started, it vibrates and transmits the vibration to screening frame 10. Under the action of vibrating motor 12, the material moves continuously within screening frame 10. Material smaller than the screening holes falls through the screening holes into the guide hopper 11 below, while material larger than the screening holes remains in screening frame 10 and is discharged from the discharge port at the end furthest from vibrating motor 12. This larger material can be returned for further preliminary crushing or processed separately. Qualified material falling into guide hopper 11 is guided by guide hopper 11 and passes through the inlet / outlet groove on the side surface of bottom box 9 through its discharge end, thus being conveyed. Inside the feed inlet of the crusher body 4, when the crusher is working normally, the guide hopper 11 is at a suitable tilt angle to ensure that the material enters the crusher body 4 at an appropriate flow rate. If the crusher load is too high, the servo motor 24 is started. The servo motor 24 is electrically connected to an external power supply, and its power output end rotates, driving the worm 23 to rotate. Since the worm 23 meshes with the worm wheel 22, the rotation of the worm 23 will drive the worm wheel 22 to rotate, thereby causing the guide hopper 11 to rotate around the rotating rod 21 as an axis, reducing the tilt angle of the guide hopper 11, reducing the material flow rate, and preventing too much material from entering the crusher, thus achieving the overload protection function. After screening and flow control, the material passes through... The discharge end of the guide hopper 11 smoothly falls into the feed inlet of the crusher body 4 and enters the crusher body 4. The crushing mechanism inside the crusher body 4 crushes the material, reducing the particle size to the required specifications, thus completing the crushing operation. The vibration generated by the screening frame 10 not only helps with material screening but also generates a certain amount of vibration energy that is transmitted to other parts of the equipment. At this time, the rubber damping pad 18 and spring 19 on the lower surface of the bottom box 9 play a role. The spring 19 can amplify the vibration generated by the screening frame 10, and the rubber damping pad 18 and rubber damping seat 20 effectively absorb vibration energy, reduce equipment resonance, reduce wear caused by vibration, and extend the service life of the equipment.

[0027] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0028] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A crusher with an overload protection device, comprising a base plate (1), a stabilizing structure (2), a bearing plate (3), a crusher body (4), and an overload protection screening structure (5), characterized in that, Two stabilizing structures (2) are respectively provided on both sides of the base plate (1). The stabilizing structure (2) includes a mounting plate (6), a threaded rod (7), and a stabilizing plate (8). One end of the mounting plate (6) is fixedly connected to the outer surface of the base plate (1). A threaded hole is opened on the upper surface of the mounting plate (6). The threaded rod (7) is threadedly connected inside the threaded hole on the upper surface of the mounting plate (6). The stabilizing plate (8) is rotatably connected to the lower end of the threaded rod (7). The crusher body (4) is fixedly connected to the upper surface of the base plate (1). 1) A bearing plate (3) is provided on the top. An overload protection screening structure (5) is provided on the upper surface of the bearing plate (3). The overload protection screening structure (5) includes a bottom box (9), a screening frame (10), a guide hopper (11) and a vibrating motor (12). The screening frame (10) is fixedly connected to the upper surface of the bottom box (9). A guide hopper (11) is provided below the screening frame (10). The guide hopper (11) is located inside the bottom box (9). A vibrating motor (12) is fixedly connected to the outer surface of one end of the screening frame (10).

2. The crusher with overload protection device according to claim 1, characterized in that, The bottom plate (1) is equipped with four locking casters (13) on its lower surface, and a connecting rod (14) is fixedly connected to the upper surface of the bottom plate (1). The upper end of the connecting rod (14) is fixedly connected to the lower surface of the bearing plate (3).

3. The crusher with overload protection device according to claim 1, characterized in that, The upper end of the threaded rod (7) is fixedly connected to a rotating wheel (15), and a rocker arm (16) is fixedly connected to the upper surface of the rotating wheel (15).

4. The crusher with overload protection device according to claim 1, characterized in that, Two ear plates (17) are fixedly connected to the outer surface of one end of the bottom box (9). Both ear plates (17) have through holes on their side surfaces. Both ends of the bottom box (9) have through holes on their outer surfaces. The bottom box (9) has inlet and outlet grooves on its side surfaces. Four rubber shock-absorbing pads (18) are fixedly connected to the lower surface of the bottom box (9). Springs (19) are fixedly connected to the lower surface of the rubber shock-absorbing pads (18). A rubber shock-absorbing seat (20) is fixedly connected to the lower end of the springs (19). The lower surface of the rubber shock-absorbing seat (20) is fixedly connected to the upper surface of the bearing plate (3).

5. The crusher with overload protection device according to claim 1, characterized in that, The screening frame (10) has a screening hole at the bottom and a discharge port at the end of the screening frame (10) away from the vibration motor (12).

6. The crusher with overload protection device according to claim 1, characterized in that, The discharge end of the guide hopper (11) extends through the inlet and outlet groove on the side surface of the bottom box (9) to the top of the feed inlet of the crusher body (4). Rotating rods (21) are fixedly connected to the outer surfaces of both ends of the guide hopper (11). The rotating rods (21) on the outer surfaces of both ends of the guide hopper (11) are rotatably connected to the through holes on the outer surfaces of both ends of the bottom box (9). A worm wheel (22) is fixedly connected to one end of the rotating rod (21) on the outer surface of one end of the guide hopper (11). A worm (23) is meshed below the worm wheel (22). The two ends of the worm (23) are rotatably connected to the through holes on the side surfaces of the two ear plates (17). A servo motor (24) is provided at one end of the worm (23). The power output end of the servo motor (24) is fixedly connected to one end of the worm (23). One side of the servo motor (24) is fixedly connected to the outer surface of the bottom box (9).

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