Anti-blocking structure of a crusher

Abstract

This utility model discloses an anti-jamming structure for a crusher, belonging to the field of crusher anti-jamming technology. The rear end of the crusher's anti-jamming shell features an improved rear cover. The improved rear cover includes a cover body, a placement groove, a docking groove, a first support frame, a second support frame, a fixing plate, a through hole, and a connecting hole. The placement groove is located in the middle of the rear end of the cover body, and docking grooves are located on both sides of the rear end. The first and second support frames are housed within one of the docking grooves. The anti-jamming system ensures smooth material passage through the crushing rollers, preventing jamming and reduced efficiency. The system includes a movable strip that can quickly respond to and dislodge jamming, reducing equipment downtime and maintenance time. The anti-jamming structure reduces the pressure of material on the crushing rollers, reducing wear and extending the crusher's lifespan. Reduced jamming also lowers the safety risks for operators. The discharge hood and extension plate design ensure smooth material discharge, improving equipment operating efficiency and safety.

Description

Technical Field

[0001] This utility model relates to the field of anti-jamming technology for crushers, and in particular to an anti-jamming structure for crushers. Background Technology

[0002] A crusher is a mechanical device used to break large materials into smaller pieces. It is widely used in mining, metallurgy, building materials, highways, railways, water conservancy, and chemical industries. The working principle of a crusher is generally based on the application of mechanical force, which causes the material to be crushed within the crushing chamber through compression, splitting, bending, or impact. Common types of crushers include jaw crushers, cone crushers, impact crushers, hammer crushers, and roller crushers. Each type of crusher has its specific crushing principle and applicable range, allowing users to select the appropriate crushing equipment based on their actual needs.

[0003] To avoid material jamming during material processing, crushers typically employ two main methods: manual unblocking and mechanical vibration. Manual unblocking requires operator intervention, using various physical means to remove material blocking the crusher. This method is not only time-consuming and labor-intensive but also poses safety hazards, increasing worker workload and potential risks. Mechanical vibration, on the other hand, utilizes specially designed vibration devices to generate vibration, helping material pass smoothly through the crushing chamber and preventing jamming. However, this method causes the crusher to temporarily stop operating during vibration, impacting production efficiency because the machine cannot perform normal crushing operations while clearing the jam. Utility Model Content

[0004] The main purpose of this utility model is to provide an anti-jamming structure for a crusher, which can effectively solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An anti-jamming structure for a crusher includes a support table, a crushing box, a transmission device, a drive motor, a crushing roller assembly, and a discharge hood. The crushing box and the drive motor are respectively installed on the upper and lower layers of the support table. The crushing roller assembly is installed in the crushing box and is connected to the drive motor through the transmission device. The discharge hood is installed at the lower front end of the crushing box and faces the crushing roller assembly to discharge the crushed material.

[0007] The inner wall of the discharge hood is provided with connecting bars, and the top of the connecting bars is provided with a first arc-shaped movable bar. A second arc-shaped movable bar is connected to the first arc-shaped movable bar. By拨动 the connecting bars, the first arc-shaped movable bar and the second arc-shaped movable bar are tilted to break the material jam at the crushing roller assembly;

[0008] The outer end of the discharge hood is provided with protruding blocks. The lower ends of the plurality of connecting bars are provided with extension plates, and a connecting rod is connected to the extension plates. The connecting rod is fixed to the protruding blocks by fastening nuts. The material slides down from the extension plates and drives the extension plates to press down, tilting the first arc-shaped movable bar and the second arc-shaped movable bar to prevent material jams.

[0009] As a further optional solution, the connecting bars and the first arc-shaped movable bar are integrally designed. A chute is formed between adjacent two connecting bars, and part of the crushed materials are discharged through the chute. The upper end of the crushing box body is provided with a feed inlet, and the material is input through the feed inlet;

[0010] As a further optional solution, the cross-sections of the first arc-shaped movable bar and the second arc-shaped movable bar are designed in a "C" shape. A plurality of second arc-shaped movable bars are connected by a rotating shaft. The second arc-shaped movable bar is placed in the gap of the first arc-shaped movable bar. The rotating shaft of the second arc-shaped movable bar is fixed to the first arc-shaped movable bar by a nut;

[0011] As a further optional solution, the cross-section of the extension plate is designed in a "丿" shape, and the extension plate is fixedly welded to the connecting bar. The extension plate is fixedly connected to the connecting rod, and both ends of the connecting rod are provided with threads;

[0012] As a further optional solution, the two protruding blocks are distributed in parallel on the discharge hood, and the connecting rod passes through the openings of the protruding blocks. The contact ends of the connecting rod and the protruding blocks are designed to be smooth;

[0013] As a further optional solution, the fastening nut is sleeved on the thread of the connecting rod, and the two fastening nuts limit the connecting rod on the protruding block, facilitating the rotation of the connecting rod to drive the extension plate to move.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] Through a carefully designed anti-jamming system, we ensure that the material can smoothly pass through the crushing roller assembly during the crushing process, thus avoiding the problem of reduced crushing efficiency caused by material jams. This design includes movable bars that can flexibly tilt. They can quickly respond when the material is jammed and break the jam in time, thus significantly reducing the equipment downtime and maintenance time caused by material jams. This anti-jamming structure not only reduces the abnormal pressure of the material on the crushing roller assembly, thereby reducing the wear of the equipment, but also extends the service life of the crusher.

[0016] Furthermore, by reducing material jamming, we have also lowered the safety risks that operators may encounter when handling jammed materials. The design of the discharge hood and extension plate ensures that the crushed material can be discharged smoothly, avoiding material accumulation inside the crusher and further improving the operating efficiency and safety of the equipment.

[0017] The integrated design of the connecting and moving strips simplifies the maintenance of the anti-jamming structure, facilitating quick inspection and replacement of worn parts. Because it effectively dissipates jamming material, the crushed material has a more uniform particle size, which not only improves crushing quality but also ensures smooth operation of subsequent processing. Overall, this anti-jamming design not only improves crushing efficiency but also reduces maintenance costs and enhances operational safety, ultimately bringing users higher production efficiency and economic benefits. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a side view of the overall structure of this utility model;

[0020] Figure 3 The diagram shows the discharge hood, crushing roller assembly, connecting strip, and extension plate of this utility model.

[0021] Figure 4 This is a diagram illustrating the connecting strip, the arc-shaped movable strip and the extension plate, and the connecting rod of this utility model.

[0022] In the diagram: 1. Support table; 2. Crushing box; 3. Feed inlet; 4. Transmission device; 5. Drive motor; 6. Crushing roller assembly; 7. Discharge hood; 8. Extension plate; 9. Connecting bar; 10. First arc-shaped movable bar; 11. Second arc-shaped movable bar; 12. Slide rail; 13. Connecting rod; 14. Fastening nut; 15. Protrusion. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] like Figure 1 - Figure 4As shown in the figure, an anti-jamming structure for a crusher is designed to improve the crushing efficiency and prevent material jamming during the crushing process. This structure mainly includes a support table 1, a crushing box body 2, a transmission device 4, a driving motor 5, a crushing roller assembly 6, and a discharge cover 7. The support table 1 serves as the foundation of the entire structure, with the upper and lower layers respectively installing the crushing box body 2 and the driving motor 5. Inside the crushing box body 2, there is a crushing roller assembly 6, which is connected to the driving motor 5 through the transmission device 4 to ensure the normal operation of the crushing roller assembly 6. The discharge cover 7 is installed at the lower front end of the crushing box body 2, directly facing the crushing roller assembly 6, so as to facilitate the smooth discharge of the crushed material.

[0025] To further prevent material jamming, connecting bars 9 are specially designed on the inner wall of the discharge cover 7. At the top of the connecting bar 9, there is a first arc-shaped movable bar 10, and a second arc-shaped movable bar 11 is connected to the first arc-shaped movable bar 10. By拨动 (should be 'pushing or pulling' in English) the connecting bar 9, the first arc-shaped movable bar 10 and the second arc-shaped movable bar 11 can be lifted, thereby breaking the material jam at the crushing roller assembly 6. In addition, a protruding block 15 is provided at the outer end of the discharge cover 7, and extension plates 8 are provided at the lower ends of multiple connecting bars 9. A connecting rod 13 is connected to the extension plate 8, and the connecting rod 13 is fixed to the protruding block 15 through a fastening nut 14. During the process of the material sliding down from the extension plate 8, it will drive the extension plate 8 to press down, thereby lifting the first arc-shaped movable bar 10 and the second arc-shaped movable bar 11, effectively preventing material jamming.

[0026] The connecting bar 9 and the first arc-shaped movable bar 10 adopt an integrated design. A slideway 12 is formed between adjacent two connecting bars 9 for discharging part of the crushed material. An inlet 3 is provided at the upper end of the crushing box body 2 to facilitate the input of materials. The cross-sections of the first arc-shaped movable bar 10 and the second arc-shaped movable bar 11 are designed as "C" shapes. Multiple second arc-shaped movable bars 11 are connected together through a rotating shaft, and the rotating shaft is fixed to the first arc-shaped movable bar 10 through a nut. This design enables the second arc-shaped movable bar 11 to rotate flexibly in the gap of the first arc-shaped movable bar 10, further improving the anti-jamming effect.

[0027] The cross-section of the extension plate 8 is designed as a "丿" shape (should be described more precisely in English, like a shape similar to a right-falling stroke), and it is fixed to the connecting bar 9 by welding. Moreover, the extension plate 8 is also fixedly connected to the connecting rod 13. Threads are provided at both ends of the connecting rod 13 to facilitate its cooperation with the protruding block 15. Two protruding blocks 15 are distributed in parallel on the discharge cover 7. The connecting rod 13 passes through the openings of the protruding block 15, ensuring a smooth design at the contact end of the connecting rod 13 and the protruding block 15 to reduce wear and jamming. The fastening nut 14 is sleeved on the thread of the connecting rod 13, and the two fastening nuts 14 limit the connecting rod 13 on the protruding block 15, facilitating the rotation of the connecting rod 13, thereby driving the extension plate 8 to move and ensuring the smooth operation of the crusher.

[0028] Installation Process: Ensure the installation site is flat, firm, and has sufficient space and load-bearing capacity. Clean the installation area, ensuring it is free of debris and obstacles. Place the support table 1 in the designated position. Ensure the support table 1 is level and secure it to the ground with bolts. Place the crushing chamber 2 on top of the support table 1. Secure the crushing chamber 2 to the support table 1 with bolts. Place the drive motor 5 on the bottom of the support table 1. Secure the drive motor 5 to the support table 1 with bolts. Connect the transmission device 4 to the output shaft of the drive motor 5. Ensure the transmission device 4 is securely connected to the drive motor 5. Install the crushing roller assembly 6 inside the crushing chamber 2. Connect the crushing roller assembly 6 to the drive motor 5 via the transmission device 4. Ensure the crushing roller assembly 6 operates smoothly without jamming.

[0029] Install the discharge hood 7 at the lower front end of the crushing chamber 2. Ensure the discharge hood 7 is directly opposite the crushing roller assembly 6 for easy material discharge. Install the connecting strip 9 on the inner wall of the discharge hood 7. Connect the first arc-shaped movable strip 10 and the second arc-shaped movable strip 11 to the connecting strip 9 respectively. Ensure the movable strips can be raised flexibly without jamming. Weld the extension plate 8 to the connecting strip 9. Pass the connecting rod 13 through the opening in the protrusion 15 and secure it with the fastening nut 14. Ensure the extension plate 8 and the connecting rod 13 are firmly connected and can drive the movable strips to move flexibly. Check that all connections are secure and that there is no looseness. Perform a trial run and observe whether all parts of the crusher are working properly, without abnormal noise or vibration. Adjust the gap of the crushing roller assembly 6 to ensure normal crushing effect and anti-jamming function.

[0030] The operating procedure is as follows: Ensure all safety devices are intact. Check that all crusher components are securely connected and free from looseness. Ensure the feed inlet 3 is free of obstructions. Start the drive motor 5 and observe whether the crushing roller assembly 6 is operating normally. Confirm that the crusher is running smoothly without abnormal noise or vibration. Feed the material into the crushing chamber 2 through the feed inlet 3. Control the material feeding speed to avoid overload. The material is crushed under the action of the crushing roller assembly 6. The crushed material is discharged through the discharge hood 7. As the material slides down from the extension plate 8, it causes the extension plate 8 to press down. The downward pressure of the extension plate 8 drives the connecting strip 9, causing the first arc-shaped movable strip 10 and the second arc-shaped movable strip 11 to lift, breaking the jammed material. After completing the crushing operation, turn off the drive motor 5. Clean the residual material in the crushing chamber 2 and the discharge hood 7. Check the wear of the crushing roller assembly 6 and the movable strips, and replace or repair them if necessary. Regularly inspect and maintain all components of the crusher to ensure normal operation of the equipment. Replace worn parts, such as crushing rollers and moving bars, to maintain crushing performance and prevent material jamming.

[0031] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A material jamming prevention structure for a crusher, comprising a support table (1), a crushing chamber (2), a transmission device (4), a drive motor (5), a crushing roller assembly (6), and a discharge hood (7), wherein the crushing chamber (2) and the drive motor (5) are respectively installed on the upper and lower layers of the support table (1), the crushing roller assembly (6) is installed in the crushing chamber (2), the crushing roller assembly (6) is connected to the drive motor (5) through the transmission device (4), and the discharge hood (7) is installed at the lower front end of the crushing chamber (2) and faces the crushing roller assembly (6) to discharge the crushed material, characterized in that: The inner wall of the discharge hood (7) is provided with connecting strips (9), and the top of the connecting strips (9) is provided with a first arc-shaped movable strip (10). A second arc-shaped movable strip (11) is connected to the first arc-shaped movable strip (10). By拨动 the connecting strip (9), the first arc-shaped movable strip (10) and the second arc-shaped movable strip (11) are lifted to break the material jam at the crushing roller assembly (6). The outer end of the discharge hood (7) is provided with protruding blocks (15). The lower ends of multiple connecting strips (9) are provided with extension plates (8), and a connecting rod (13) is connected to the extension plate (8). The connecting rod (13) is fixed to the protruding block (15) by a fastening nut (14). The material slides down from the extension plate (8) and drives the extension plate (8) to press down, lifting the first arc-shaped movable strip (10) and the second arc-shaped movable strip (11) to prevent material jamming.

2. The anti-jamming structure for a crusher according to claim 1, characterized in that: The connecting strip (9) and the first arc-shaped movable strip (10) are integrally designed. A chute (12) is formed between adjacent two connecting strips (9). Part of the crushed material is discharged through the chute (12). The upper end of the crushing box body (2) is provided with a feed inlet (3), and the material is put in through the feed inlet (3).

3. The anti-jamming structure for a crusher according to claim 2, characterized in that: The cross-sections of the first arc-shaped movable strip (10) and the second arc-shaped movable strip (11) are designed in a "C" shape. Multiple second arc-shaped movable strips (11) are connected by a rotating shaft. The second arc-shaped movable strip (11) is placed in the gap of the first arc-shaped movable strip (10). The rotating shaft of the second arc-shaped movable strip (11) is fixed to the first arc-shaped movable strip (10) by a nut.

4. The anti-jamming structure for a crusher according to claim 3, characterized in that: The cross-section of the extension plate (8) is designed in a "丿" shape, and the extension plate (8) is fixedly welded to the connecting strip (9). The extension plate (8) is fixedly connected to the connecting rod (13), and both ends of the connecting rod (13) are provided with threads.

5. The anti-jamming structure for a crusher according to claim 4, characterized in that: Two protruding blocks (15) are parallelly distributed on the discharge hood (7), and the connecting rod (13) passes through the holes opened in the protruding blocks (15). The contact ends of the connecting rod (13) and the protruding blocks (15) are designed to be smooth.

6. The anti-jamming structure for a crusher according to claim 5, characterized in that: The fastening nut (14) is sleeved on the thread of the connecting rod (13). Two fastening nuts (14) limit the connecting rod (13) on the protruding block (15), facilitating the rotation of the connecting rod (13) to drive the extension plate (8) to move.

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