An impact crusher for sand and stone processing

Abstract

The present invention belongs to the technical field of crushers, and specifically discloses an impact crusher for sand and stone processing, comprising: an outer shell, having an inner cavity, the inner cavity being equipped with a screening plate; a first drive shaft, rotatably mounted on the outer shell; the first drive shaft passes through the inner cavity, and the portion of the first drive shaft located in the inner cavity is provided with a plurality of crushing teeth, and the inner cavity is provided with a crushing plate matched with the crushing teeth; a second drive shaft, slidably mounted on the outer shell; the first drive shaft is provided with a through hole along the axial direction, and the first drive shaft is sleeved with the second drive shaft through the through hole; the crushing teeth extend to the inside of the through hole and abut against the circumferential side wall of the second drive shaft; the second drive shaft can move in the through hole along the axial direction of the first drive shaft to drive all the crushing teeth to approach the screening plate and the crushing plate; it has the following advantages: dynamic adjustment of the crushing teeth, enhanced flexibility of the crushing size and optimized crushing efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of crushers, and in particular to an impact crusher for sand and stone processing. Background Art

[0002] Impact crusher is a kind of mechanical equipment widely used in sand and stone processing. It mainly uses impact force to crush materials. It is designed to process materials of different hardness, such as limestone, granite, river pebbles, etc. It uses the rotating rotor to drive the hammer head to impact the material, so that the material is broken along the impact plate and thrown to another impact plate, thereby achieving the purpose of crushing.

[0003] In existing impact crusher designs, the crushing teeth are usually configured in a fixed mode, which requires the crushing size to be set before the crusher is operated, limiting the flexibility of the crusher to adjust the output material size during operation. In actual operation, the type and size of the material may change, but due to the fixed configuration of the crushing teeth, the machine cannot be adjusted in real time, which may lead to reduced efficiency or poor crushing effect.

[0004] In addition, the crusher in the prior art is usually equipped with a bottom screening plate, whose main function is to intercept sand and gravel that meet specific size requirements, while sand and gravel that do not meet the requirements remain inside the machine to continue to be crushed. However, this design has defects in the material driving and secondary crushing under the screening plate. If the material fails to pass through the screening plate effectively, it will accumulate at the bottom of the crusher, resulting in reduced crushing efficiency and difficulty in achieving comprehensive crushing of the material. This situation not only increases the difficulty of machine maintenance, but may also cause the crusher to overload due to excessive material accumulation, affecting the stable operation and service life of the equipment.

[0005] For this reason, a kind of impact crusher for sand and stone processing is proposed to solve the above-mentioned problems. Summary of the invention

[0006] The present invention aims to provide an impact crusher for sand and stone processing to solve or improve at least one of the above-mentioned technical problems.

[0007] In view of this, a first aspect of the present invention is to provide an impact crusher for sand and stone processing.

[0008] The first aspect of the present invention provides an impact crusher for sand and gravel processing, comprising: an outer shell, having an inner cavity; the inner cavity is used for allowing the sand and gravel to pass through the outer shell along a flow path; on the flow path, the inner cavity is equipped with a screening plate; a first drive shaft, rotatably mounted on the outer shell; the first drive shaft passes through the inner cavity, and the part of the first drive shaft located in the inner cavity is provided with a plurality of crushing teeth, and the inner cavity is provided with a crushing plate matched with the crushing teeth; a second drive shaft, slidably mounted on the outer shell; the first drive shaft is provided with a through hole in the axial direction, and the first drive shaft is sleeved with the second drive shaft through the through hole; along the radial direction of the first drive shaft, the crushing teeth extend to the inside of the through hole and abut against the circumferential side wall of the second drive shaft; the second drive shaft can move in the through hole along the axial direction of the first drive shaft to drive all the crushing teeth close to the screening plate and the crushing plate.

[0009] In any of the above technical solutions, along the circumference of the first drive shaft, the ends of all the crushing teeth away from the first drive shaft form a circumferential boundary during movement; and a first gap for crushing the sand and gravel is formed between the crushing plate and the circumferential boundary, and a second gap for screening the sand and gravel is formed between the screening plate and the circumferential boundary.

[0010] In any of the above technical solutions, the first gap and the second gap are respectively located inside the inner cavity, and the first gap, the second gap and the inner cavity are connected to each other; along the direction of the flow path, the gap distance of the first gap gradually decreases; the first gap has an inlet with a maximum gap distance and an outlet with a minimum gap distance; the gap distance of the second gap at each location along the direction of the flow path is the same; the second gap is a circumferential arc space.

[0011] In any of the above technical solutions, a conical surface is formed on the circumferential side wall of the second driving shaft, and all the crushing teeth are in contact with the conical surface; when the conical surface drives the crushing teeth to approach the screening plate and the crushing plate, the ratio of the gap distance between the inlet and outlet of the first gap increases, and the gap distance of the second gap decreases equidistantly in the circumferential direction.

[0012] In any of the above technical solutions, a plurality of the crushing teeth corresponding to each other along the circumferential direction of the first driving shaft form a group, and the crushing teeth in the same group are assembled on the first driving shaft through a driving ring.

[0013] In any of the above technical solutions, an annular cavity is formed inside the drive ring, and the crushing tooth includes: a first rod body, which passes through the drive ring from the outside and extends to the inside of the annular cavity; a wear assembly is fixedly installed on the side wall of the first rod body corresponding to the circumferential boundary; a second rod body, which passes through the drive ring and the first drive shaft from the inside of the annular cavity and extends to the inside of the through hole; and the second rod body abuts against the first rod body and the second drive shaft respectively.

[0014] In any of the above technical solutions, the second rod body points to the second driving shaft along the radial direction of the first driving shaft, and a middle side wall of the second rod body is formed with an inclined surface, which abuts against one end of the first rod body located in the annular cavity.

[0015] In any of the above technical solutions, a shoulder located in the annular cavity is formed on the first rod body, and the inner wall of the annular cavity corresponding to the shoulder is connected to the shoulder through a spring; the elastic deformation direction of the spring points to the abutment between the inclined surface and the first rod body.

[0016] In any of the above technical solutions, an angle is formed between a line connecting the wear assembly and the abutment and a line connecting the axis of the second drive shaft and the abutment; the opening direction of the angle faces the movement direction of the wear assembly, and / or the angle of the angle is not greater than ninety degrees.

[0017] In any of the above technical solutions, the crushing plate is elastically mounted on the outer shell, and the crushing plate and the second driving shaft are located outside the inner cavity and are respectively provided with detection ends, and the detection ends correspond to the outer wall of the outer shell.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] By introducing the second drive shaft and the external hydraulic cylinder system, the present invention allows the crushing teeth to move axially along the first drive shaft, thereby realizing dynamic adjustment of the position of the crushing teeth. This allows the crushing size to be adjusted according to actual needs during the crushing process, solving the problem in the prior art that the fixed mode of the crushing teeth of the crusher limits the flexible adjustment of the size during operation.

[0020] The synergy between the crushing teeth and the screen plate is achieved through the dynamic position adjustment of the second drive shaft. This design enables the crushing teeth to approach the screen plate when needed, helping to push the intercepted larger sand and gravel particles to continue moving and breaking, thereby improving the material passing rate and the overall efficiency of the crusher, and solving the problem that the sand and gravel intercepted by the bottom screen plate is difficult to be fully driven and further broken.

[0021] Additional aspects and advantages of embodiments according to the present invention will become apparent in the following description or may be learned through practice of embodiments according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a schematic diagram of the first driving shaft and its connection structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the sieve plate and its connection structure of the present invention;

[0026] Figure 4 It is a schematic diagram of the crushing plate and its connection structure of the present invention;

[0027] Figure 5 A schematic diagram of the relationship between the first gap and the second gap formed by the circumferential boundary of the present invention;

[0028] Figure 6 It is a schematic diagram of the second driving shaft and its connection structure of the present invention;

[0029] Figure 7 It is a schematic diagram of a half-section of the first drive shaft of the present invention and its connection structure;

[0030] Figure 8 It is a schematic diagram of the drive ring and its connection structure of the present invention;

[0031] Fig. 9 It is a schematic diagram of the layout relationship between the first rod body and the second rod body of the present invention;

[0032] Fig.10 for Fig. 9 Enlarged view of point A in the middle.

[0033] in, Figure 1-Figure 10 The corresponding relationship between the reference numerals and the component names is as follows:

[0034] 1 housing, 101 inner cavity, 102 feed port, 103 discharge port, 2 screening plate, 3 first drive shaft, 301 through hole, 302 slot, 303 second plug hole, 4 crushing teeth, 401 first rod body, 4011 shoulder, 402 wear fitting, 403 second rod body, 4031 inclined surface, 5 crushing plate, 6 second drive shaft, 601 conical surface, 7 circumferential boundary, 701 first gap, 702 second gap, 8 drive ring, 801 annular cavity, 802 first ring body, 803 second ring body, 8031 ​​convex rib, 8032 first plug hole, 804 third plug hole, 9 spring, 10 detection end, 11 laser sensor, 12 power input wheel, 13 spring column, 14 annular sealing plate, 15 connecting rod. DETAILED DESCRIPTION

[0035] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0037] See also Figure 1-Figure 10 , an impact crusher for sand and stone processing according to some embodiments of the present invention is described below.

[0038] The embodiment of the first aspect of the present invention provides an impact crusher for sand and stone processing. In some embodiments of the present invention, such as Figure 1-Figure 10 As shown, the impact crusher comprises:

[0039] The housing 1 has an inner cavity 101; the inner cavity 101 is used for sand and gravel to pass through the housing 1 along a flow path; on the flow path, the inner cavity 101 is equipped with a screening plate 2. The upper end of the housing 1 is provided with a feed port 102 for sand and gravel to enter the inner cavity 101, and the bottom of the housing 1 is provided with a discharge port 103 for sand and gravel to fall out of the inner cavity 101.

[0040] The first drive shaft 3 is rotatably mounted on the housing 1; the first drive shaft 3 passes through the inner cavity 101, and a plurality of crushing teeth 4 are provided at the portion of the first drive shaft 3 located in the inner cavity 101, and a crushing plate 5 matching the crushing teeth 4 is provided in the inner cavity 101. The first drive shaft 3 transmits power to the outside through a power input wheel 12 fixedly mounted at one end, so that the first drive shaft 3 rotates.

[0041] The second drive shaft 6 is slidably mounted on the outer shell 1; the first drive shaft 3 is provided with a through hole 301 along the axial direction, and the first drive shaft 3 is sleeved with the second drive shaft 6 through the through hole 301, and the second drive shaft 6 is connected to an external hydraulic cylinder at the other end of the first drive shaft 3 to drive the second drive shaft 6 to move axially.

[0042] Along the radial direction of the first drive shaft 3, the crushing teeth 4 extend to the inside of the through hole 301 and abut against the circumferential side wall of the second drive shaft 6; the second drive shaft 6 can move in the through hole 301 along the axial direction of the first drive shaft 3 to drive all the crushing teeth 4 to approach the screening plate 2 and the crushing plate 5, and drive all the crushing teeth 4 to move circumferentially through the first drive shaft 3, and cooperate with the crushing plate 5 to crush the sand and gravel, and cooperate with the screening plate 2 to drive the intercepted sand and gravel to further move and crush.

[0043] The present invention provides an impact crusher for sand and stone processing. The shell 1 of the impact crusher is designed as a solid structure, and there is a spacious inner cavity 101 inside it for accommodating sand and stone and related mechanical parts; the inner cavity 101 is the main flow path of sand and stone inside the machine. Its design ensures the smooth flow of materials from the feed port 102 to the discharge port 103, and the shape and size of the inner cavity 101 are optimized to reduce the accumulation of materials inside and improve the crushing efficiency; the feed port 102 is located at the upper end of the shell 1, and this design allows sand and stone to enter the impact crusher smoothly from the top. The port size is sufficient to cope with raw stones of various sizes, which is convenient for fast and efficient feeding; the discharge port 103 is located at the bottom of the shell 1, and is used to discharge crushed sand and stone. The position and design of the discharge port 103 ensure that the crushed material can quickly leave the inner cavity 101, reducing the internal material backflow and accumulation, thereby improving the crushing efficiency; the screening plate 2 is installed on the flow path of the inner cavity 101, and its main function is to screen the sand and stone flowing through. The aperture on the screening plate 2 can be adjusted as needed to adapt to the crushing requirements of different sizes. In this way, only sandstones that reach a certain size standard can pass through the screening plate 2, while larger materials remain in the inner cavity 101 and continue to be crushed.

[0044] Sand and gravel enter the inner cavity 101 through the feed port 102. Due to the effect of gravity, the material moves downward along the inner cavity 101. The material will be impacted by high-speed rotation during the falling process, and the crushed small pieces of sand and gravel will continue to move downward. The crushed sand and gravel pass through the screening plate 2, and the qualified sand and gravel fall to the discharge port 103 through the plate holes, while the sand and gravel that fails to pass through will remain in the inner cavity 101 and continue to be crushed.

[0045] The first drive shaft 3 is rotatably mounted on the housing 1 and passes through the inner cavity 101. The design and installation of the shaft ensure its stability and durability, and can withstand high-speed rotation and high-load operating conditions; a plurality of crushing teeth 4 are installed on the first drive shaft 3. These crushing teeth 4 are evenly distributed on the shaft. When the shaft rotates, the crushing teeth 4 impact the sand and gravel flowing through at high speed to achieve material crushing; the crushing plate 5 is fixedly installed in the inner cavity 101 and cooperates with the crushing teeth 4. When the sand and gravel pass through the inner cavity 101, the crushing teeth 4 hit the material to the crushing plate 5. The position and angle of the crushing plate 5 make the material hit again, thereby further crushing; the material, thickness and angle of the crushing plate 5 are carefully designed to maximize the crushing efficiency and reduce wear; the power input wheel 12 is installed at one end of the first drive shaft 3, and the external power is transmitted to the first drive shaft 3 through this wheel. This design allows the first drive shaft 3 to receive power from an electric motor or other power source; the power input wheel 12 is usually connected to the motor shaft by a belt, chain or direct connection to ensure the effective transmission of power, thereby driving the first drive shaft 3 to rotate at high speed.

[0046] The operator starts the motor, and the power is transmitted to the first drive shaft 3 through the power input wheel 12, causing it to start rotating at high speed; as the first drive shaft 3 rotates, the crushing teeth 4 installed on the first drive shaft 3 hit the sand and gravel flowing through at high speed. The impact force of the crushing teeth 4 hits the sand and gravel toward the crushing plate 5, and the material is repeatedly hit between the crushing plate 5 and the crushing teeth 4, achieving effective crushing; the crushed material continues to flow along the inner cavity 101, and is finally discharged from the machine through the discharge port 103.

[0047] The second drive shaft 6 is slidably mounted on the housing 1 so that it can move axially. This installation method allows the second drive shaft 6 to be adjusted in position according to work needs; the first drive shaft 3 is provided with a through hole 301 in the axial direction, and the second drive shaft 6 is connected to the first drive shaft 3 through this through hole 301. This design allows the two drive shafts to work together, and the second drive shaft 6 can move axially under the rotational power of the first drive shaft 3; the second drive shaft 6 is connected to an external hydraulic cylinder at the other end of the first drive shaft 3. The function of the hydraulic cylinder is to provide the necessary force to drive the second drive shaft 6 to move axially. This movement is driven by the change in liquid pressure inside the hydraulic cylinder, allowing precise control of position and speed; by adjusting the pressure of the hydraulic cylinder, the movement range and position of the second drive shaft 6 can be controlled, thereby adjusting the relative position of the crushing plate 5 that cooperates with the crushing teeth 4 on the first drive shaft 3.

[0048] When the machine is started, the first drive shaft 3 receives power through the power input wheel 12 and starts to rotate. This rotational power can be transmitted to the second drive shaft 6 through the through hole 301 thereon; the operator adjusts the pressure of the hydraulic cylinder according to the crushing requirements to control the axial movement of the second drive shaft 6. This movement allows the internal structure of the crusher (such as the crushing plate 5) to be adjusted as needed to adapt to different sizes of sand and gravel or different crushing requirements; as the second drive shaft 6 moves, the relative position of the crushing plate 5 and the crushing teeth 4 can be adjusted, so that the crusher can process materials of various sizes more effectively. After multiple impacts of the crushing teeth 4 and the crushing plate 5, the material is crushed to the required size.

[0049] The crushing teeth 4 extend radially along the first drive shaft 3, enter the through hole 301 on the first drive shaft 3, and abut against the circumferential side wall of the second drive shaft 6. This design allows the crushing teeth 4 to adjust their position in the inner cavity 101 as the second drive shaft 6 moves; the second drive shaft 6 can move axially along the first drive shaft 3 in the through hole 301, and this movement is controlled by an external hydraulic cylinder, allowing the position of the crushing teeth 4 to be accurately adjusted; the first drive shaft 3 receives external power through the power input wheel 12 to rotate it. This rotation not only drives the circumferential movement of the crushing teeth 4, but also transmits it to the second drive shaft 6 through the sleeve design; by adjusting the pressure of the hydraulic cylinder, the second drive shaft 6 moves axially, driving all the crushing teeth 4 to move closer to or away from the screen plate 2 and the crushing plate 5; as the second drive shaft 6 moves, the crushing teeth 4 can be closer to or farther away from the crushing plate 5. This allows the crushing strength to be adjusted according to the size and hardness of the sand and gravel, and the interaction between the crushing teeth 4 and the crushing plate 5 generates a strong impact force to effectively crush the material; the position adjustment of the crushing teeth 4 also affects its interaction with the screen plate 2. When the crushing teeth 4 are close to the screen plate 2, they can help drive the larger sand and gravel particles intercepted by the screen plate 2 to continue moving and breaking, thereby improving the overall efficiency and output quality of the crusher.

[0050] When the crusher is started, the first drive shaft 3 starts to rotate, driving the crushing teeth 4 to move in a circumferential direction. The position of the second drive shaft 6 is adjusted by the hydraulic system, and the position of the crushing teeth 4 is optimized relative to the crushing plate 5 and the screening plate 2; the material enters through the feed port, and is impacted by the rotating crushing teeth 4 and the counter-impact of the crushing plate 5, achieving efficient crushing. The adjusted crushing teeth 4 can also help push the material intercepted by the screening plate 2, achieving further crushing and passing through the screening plate 2.

[0051] In summary, by introducing the second drive shaft 6 and the external hydraulic cylinder system, the present invention allows the crushing teeth 4 to move axially along the first drive shaft 3, thereby realizing dynamic adjustment of the position of the crushing teeth 4. This allows the crushing size to be adjusted according to the actual needs of the crushing process, solving the problem in the prior art that the fixed mode of the crushing teeth 4 of the crusher limits the flexible adjustment of the size during operation, and the synergy between the crushing teeth 4 and the screen plate 2 is realized through the dynamic position adjustment of the second drive shaft 6. This design enables the crushing teeth 4 to approach the screen plate 2 when necessary, helping to push the intercepted larger sand and gravel particles to continue to move and crush, thereby improving the material passing rate and the overall efficiency of the crusher, and solving the problem that the sand and gravel intercepted by the bottom screen plate 2 is difficult to be fully driven and further crushed.

[0052] The design of the present invention allows the operator to adjust the position of the crushing teeth 4 in real time according to different material characteristics and processing requirements, thereby responding to different production situations more flexibly and improving the applicability and flexibility of the machine. By dynamically adjusting the position of the crushing teeth 4, the present invention not only improves the accuracy of crushing, but also enhances the efficiency of the crushing process. More efficient material handling capabilities mean higher productivity and lower operating costs. The dynamic adjustment of the crushing teeth 4 reduces the risk of mechanical wear and overload caused by inappropriate crushing size, thereby reducing maintenance requirements and possible machine failures and extending the service life of the equipment. Accurate control of the crushing size and pass rate not only improves production efficiency, but also improves the quality of the final product.

[0053] In any of the above embodiments, along the circumference of the first drive shaft 3, the ends of all crushing teeth 4 away from the first drive shaft 3 form a circumferential boundary 7 during movement. Determination of the circumferential boundary 7 can provide conditions for predicting the actual crushing size and space.

[0054] A first gap 701 for crushing sand and gravel is formed between the crushing plate 5 and the circumferential boundary 7 , and a second gap 702 for screening sand and gravel is formed between the screening plate 2 and the circumferential boundary 7 .

[0055] In this embodiment, the crushing teeth 4 are fixed to the first drive shaft 3, and their positions are arranged along the circumference of the shaft, and each crushing tooth 4 extends outward from the shaft. When the first drive shaft 3 rotates, these crushing teeth 4 form a continuous circumferential boundary 7 away from the edge of the shaft end. This boundary defines the maximum peripheral range of the crushing teeth 4; by accurately controlling the layout of the crushing teeth 4 and the circumferential boundary 7, the space of the crushing action and the actual crushing size can be predicted. This enables the operator to adjust the operating parameters of the machine, such as the rotation speed and the position of the crushing teeth 4, according to the desired final sand and gravel size. When the crusher is started, the first drive shaft 3 starts to rotate through an external power source. According to production requirements, the second drive shaft 6 can change the position of the crushing teeth 4 relative to the crushing plate 5 and the screening plate 2 through the adjustment of the hydraulic cylinder; the rotating first drive shaft 3 drives all the crushing teeth 4 to rotate at a high speed, and the circumferential boundary 7 of the crushing teeth 4 ensures that the material is subjected to uniform and continuous impact force when passing. This uniform crushing action helps to produce sand and gravel of uniform size and reduce the generation of oversized or undersized particles; since the circumferential boundary 7 of the crushing teeth 4 is determined, the operator can predict the size of the crushing space and adjust the equipment settings accordingly, such as adjusting the extension length or rotation speed of the crushing teeth 4 to adapt to different material hardness and required crushing particle size.

[0056] The operator can set and adjust the machine more accurately according to the circumferential boundary 7 of the crushing teeth 4 to meet specific production requirements; ensure the uniformity and continuity of the crushing action, improve the efficiency of the crushing process, and ensure the consistency of product quality; the clear circumferential boundary 7 makes the working status of the crusher and possible faults easier to monitor and diagnose.

[0057] The first gap 701 is located between the crushing plate 5 and the circumferential boundary 7 of the crushing teeth 4. This gap is the key area of ​​the crushing operation, and its width directly affects the crushing efficiency and the final particle size of the sand and gravel. When the first drive shaft 3 drives the crushing teeth 4 to rotate, the crushing teeth 4 push the material toward the crushing plate 5. When the material enters the first gap 701, it is subjected to the high-speed impact of the crushing teeth 4 and the reverse force of the crushing plate 5, thereby achieving effective crushing. The width of the first gap 701 determines the degree to which the material is crushed. A smaller gap can achieve a finer crushing particle size, while a larger gap is suitable for producing coarser sand and gravel. The second gap 702 is located between the screening plate 2 and the circumferential boundary 7 of the crushing teeth 4. This gap is used to screen the crushed sand and gravel to ensure that only sand and gravel that meet specific size requirements can pass through; after the crushed material passes through the first gap 701, it will enter the second gap 702 for screening. The setting of the second gap 702 ensures that only sand and gravel that are at or below the set size can pass through the screening plate 2, and larger sand and gravel are returned to the crushing area for further crushing; by adjusting the size of the second gap 702, the particle size distribution of the output sand and gravel can be accurately controlled to meet different industrial requirements.

[0058] By precisely controlling the size of the first gap 701 and the second gap 702, high efficiency and accuracy of the crushing and screening process can be ensured, and excessive crushing and material waste can be avoided; the adjustability of the gap allows the operator to flexibly adjust the crushing and screening effects according to different production needs, providing a wider range of material processing capabilities; the same equipment can process sand and gravel of various hardness and sizes, reducing the need for equipment replacement and related costs.

[0059] In any of the above embodiments, the first gap 701 and the second gap 702 are respectively located inside the inner cavity 101 , and the first gap 701 , the second gap 702 and the inner cavity 101 are interconnected.

[0060] Along the direction of the flow path, the gap distance of the first gap 701 gradually decreases to facilitate the step-by-step crushing of sand and gravel; the first gap 701 has an inlet with the largest gap distance and an outlet with the smallest gap distance.

[0061] Along the direction of the flow path, the gap distance of the second gap 702 is the same everywhere; the second gap 702 is a circumferential arc space. At the same moving position of the crushing teeth 4, the gap distance of the discharge port is similar to and slightly larger than the gap distance of the second gap 702.

[0062] In this embodiment, the first gap 701 is located between the crushing teeth 4 and the crushing plate 5, and is mainly used for the preliminary crushing of the material. The material is subjected to strong mechanical impact and extrusion force in this gap, thereby reducing the particle size; the second gap 702 is located between the circumferential boundary 7 of the crushing teeth 4 and the screening plate 2, and is mainly used for screening the crushed material. Only materials of a certain size can pass through this gap, and larger materials are left in the inner cavity 101 for further crushing. When the materials enter the inner cavity 101 from the feed inlet, they first contact the rotating crushing teeth 4. These crushing teeth 4 push the materials toward the crushing plate 5, and the materials are crushed in the first gap 701. The crushed materials move further downward to the second gap 702; the materials crushed in the first gap 701 will move to the second gap 702 due to the action of gravity and rotational force. Here, the screening plate 2 allows materials of a certain size to pass through according to the gap set by it, while larger materials are returned to the crushing area; the connectivity of the first gap 701 and the second gap 702 with the inner cavity 101 ensures the high efficiency of material processing. This design allows the material to flow freely within the inner cavity 101 without the need for additional material transfer devices, thereby reducing energy consumption and the possibility of material accumulation.

[0063] The continuous material flow reduces processing time and energy consumption, and improves production efficiency; due to the effective setting and interconnection of the first gap 701 and the second gap 702, more precise crushing and screening control can be achieved, and the quality and consistency of the final product are improved; the smooth flow of materials reduces the impact and wear on mechanical parts, thereby extending the service life of the equipment and reducing maintenance costs.

[0064] The first gap 701 is designed to gradually reduce the gap distance from the feed inlet to the discharge outlet. This means that when the material passes through this area, it will experience a process from coarse crushing to fine crushing, gradually reducing the particle size of the material; the feed inlet is located at the beginning of the first gap 701, with the largest gap distance, mainly used to receive larger pieces of original sand and gravel; the discharge outlet is located at the end of the first gap 701, with the smallest gap distance, and the sand and gravel here have been crushed to the required minimum size. Large pieces of sand and gravel enter the first gap 701 through the feed inlet. Since the gap here is large, the initial crushing is mainly for large pieces of material, reducing their volume for further processing. As the material moves along the first drive shaft 3 toward the discharge outlet, the gap gradually narrows. This gradually narrowing gap allows the material to be further crushed as it moves forward. This step-by-step crushing ensures that the sand and gravel have reached the final required particle size when they reach the discharge outlet. By accurately designing the gradually decreasing structure of the first gap 701, the degree of material crushing can be very accurately controlled. This not only improves the crushing efficiency, but also ensures the uniformity and consistency of the crushed material.

[0065] The step-by-step crushing design reduces the possibility of over-crushing or under-crushing of materials in a single crushing process, and improves the overall crushing efficiency. By gradually reducing the crushing gap, the material is crushed more effectively, reducing the need for repeated crushing, thereby reducing energy consumption and operating costs. The continuity and gradual refinement of the crushing process ensures that the particle size distribution of the final product is more uniform, meeting higher quality standards.

[0066] The second gap 702 is set with the same gap distance along the entire circumference. This uniformity ensures the consistency of the screening process. No matter where the sand and gravel are in the inner cavity 101, they will experience the same screening standard. The circumferential arc design of the second gap 702 increases the surface area in contact with the sand and gravel, thereby improving the screening efficiency. This arc structure allows the sand and gravel to be subjected to a more uniform screening force when passing through, helping to more effectively separate the sand and gravel that meet the discharge standard and the larger sand and gravel that need to be crushed again. When the crushed sand and gravel move from the discharge port of the first gap 701 to the second gap 702, they will enter this circumferential arc screening space. Since the gap distance of the second gap 702 is similar to and slightly larger than the gap distance of the discharge port of the first gap 701, this ensures that most of the sand and gravel coming out of the first gap 701 can pass through the second gap 702. Smaller sand and gravel particles can pass through the second gap 702 smoothly and directly enter the final collection area, while those sand and gravel that are still too large will be intercepted by the second gap 702. Due to the uniform gap setting of the second gap 702, the intercepted sand and gravel will be evenly distributed in the inner cavity 101, so as to be sent back to the crushing area for further processing.

[0067] Due to the uniform and circumferential arc design of the second gap 702, the screening process is more efficient and consistent, ensuring that the particle size distribution of the product is uniform and meets more stringent quality standards; appropriate gap setting reduces unnecessary repeated crushing, thereby reducing energy consumption and material waste and increasing overall production efficiency; the uniform and arc-shaped gap design simplifies the operation and maintenance of the machine. Due to the uniform distribution and processing of sand and gravel, machine wear is reduced and maintenance cycles are extended.

[0068] In any of the above embodiments, a conical surface 601 is formed on the circumferential side wall of the second drive shaft 6, and all the crushing teeth 4 are in contact with the conical surface 601. By all the crushing teeth 4 being in contact with the conical surface 601 of the second drive shaft 6, when the second drive shaft 6 moves axially, all the crushing teeth 4 can be driven to approach the screening plate 2 and the crushing plate 5 at an equal distance.

[0069] When the conical surface 601 drives the crushing teeth 4 to approach the screening plate 2 and the crushing plate 5, the ratio of the gap distance between the inlet and the outlet of the first gap 701 increases, and the gap distance of the second gap 702 decreases equidistantly in the circumferential direction. By increasing the ratio of the gap distance between the inlet and the outlet when reducing the gap distance of the second gap 702, the degree of reduction in the crushing size of the sand and gravel by the first gap 701 can be increased.

[0070] In this embodiment, the circumferential side wall of the second drive shaft 6 is designed to be conical, which helps to achieve uniform movement of the crushing teeth 4. The conical surface 601 provides an inclined surface, along which the crushing teeth 4 can slide as the second drive shaft 6 moves axially; all the crushing teeth 4 abut against the conical surface 601 of the second drive shaft 6. When the second drive shaft 6 moves axially (through the action of the external hydraulic cylinder), the crushing teeth 4 will move equidistantly along the conical surface 601, thereby approaching or moving away from the crushing plate 5 and the screening plate 2. Before the crushing operation begins, the second drive shaft 6 can be adjusted to a specific position according to the required crushing particle size and the characteristics of the material. This position determines the initial distance of the crushing teeth 4 relative to the crushing plate 5 and the screening plate 2; as the first drive shaft 3 rotates, the crushing teeth 4 begin to rotate and crush the material. If the crushing particle size needs to be further adjusted, the second drive shaft 6 can move axially during operation, and drive all the crushing teeth 4 to move equidistantly toward the crushing plate 5 or the screening plate 2 through its conical surface 601. This movement allows the position of the crushing teeth 4 to be adjusted continuously to adapt to changes in the material during the crushing process or to achieve a more precise crushing effect; similarly, the position adjustment of the crushing teeth 4 also affects the interaction between the material and the screen plate 2. The approach of the crushing teeth 4 can help push larger material particles, increase their contact opportunities with the screen plate 2, and thus improve screening efficiency.

[0071] Through the design of the conical surface 601 and the crushing teeth 4, the present invention can accurately control the position of the crushing teeth 4, thereby accurately controlling the crushing and screening processes and improving product quality; this design allows the position of the crushing teeth 4 to be adjusted quickly and continuously during the operation of the machine, thereby adapting to different crushing requirements and improving production efficiency; since the position of the crushing teeth 4 can be adjusted without stopping the machine, the downtime caused by adjusting the settings is greatly reduced, thereby improving production continuity.

[0072] When the conical surface 601 drives the crushing teeth 4 to approach the screening plate 2 and the crushing plate 5, the gap distance ratio between the inlet and the outlet of the first gap 701 increases. This means that the material is subjected to a smaller pressure at the beginning of the crushing process, but gradually increases when passing through the crushing area, and finally reaches the maximum pressure at the outlet, achieving more delicate crushing; at the same time, the gap distance of the second gap 702 is equidistantly reduced in the circumferential direction under the action of the conical surface 601. This reduction makes the screening process more rigorous, and only smaller sand and gravel particles can pass through, thereby improving the accuracy and efficiency of screening. Inside the first gap 701, as the crushing teeth 4 move, the material experiences a gradually increasing pressure from the inlet to the outlet. This change in pressure is due to the reduction in the distance between the crushing teeth 4 and the crushing plate 5, which allows the material to be crushed more delicately. The increase in the gap distance ratio between the feed port and the discharge port actually reflects the increase in pressure during the crushing process, thereby achieving a smaller crushing size; for the second gap 702, due to the reduction in the gap distance, the particle size of sand and gravel that can pass through the screening process becomes smaller, which means that only finer sand and gravel can pass through the screening plate 2, ensuring the uniformity and quality of the output material.

[0073] By increasing the gap distance ratio between the feed port and the discharge port, the crusher can produce finer sand and gravel particle sizes to meet more stringent industrial application requirements; reducing the gap distance of the second gap 702 makes screening more precise, reduces the mispassing of oversized particles, and improves the quality of the final product; this design provides a highly flexible operating mode, allowing the crushing and screening settings to be adjusted according to the characteristics of the material and production requirements during machine operation.

[0074] In any of the above embodiments, a plurality of crushing teeth 4 corresponding to each other in the circumferential direction of the first drive shaft 3 form a group, and the crushing teeth 4 of the same group are assembled on the first drive shaft 3 through a drive ring 8. The drive ring 8 drives all the crushing teeth 4 corresponding to the circumference, so that the circumferential motion of the crushing teeth 4 in the radial movement is more stable.

[0075] In this embodiment, the drive ring 8 is mounted on the first drive shaft 3 to uniformly control a group of circumferentially corresponding crushing teeth 4. With this configuration, all crushing teeth 4 can receive the same driving force at the same time, ensuring their synchronous movement and consistency; the crushing teeth 4 of the same group are fixed to the first drive shaft 3 through the drive ring 8. This design makes each crushing tooth 4 more stable in radial movement and circumferential movement, reducing the vibration and imbalance that may be caused by the individual movement of the crushing teeth 4. When the first drive shaft 3 rotates, the drive ring 8 also rotates. Since all crushing teeth 4 are mounted on the first drive shaft 3 through the drive ring 8, it is ensured that all crushing teeth 4 can perform synchronous circumferential movement. This synchronous movement is essential for crushing large pieces of material because it can evenly distribute the crushing force and avoid unnecessary stress concentration on the machine; the drive ring 8 provides additional support and stability when the crushing teeth 4 move radially. This stability is achieved by ensuring that all crushing teeth 4 maintain correct alignment and spacing during movement. Stable crushing teeth 4 can crush materials more effectively and reduce the loss of efficiency caused by loose or uneven wear of the crushing teeth 4.

[0076] By ensuring the synchronous and stable movement of the crushing teeth 4 through the drive ring 8, the crusher can process materials of various hardnesses more effectively and improve the crushing efficiency; the stable movement of the crushing teeth 4 reduces the impact and wear on other parts of the machine, thereby extending the service life of the entire equipment; the stable structure of the crushing teeth 4 reduces the need for frequent maintenance, so the crushing teeth 4 are less likely to fail or need adjustment.

[0077] In any of the above embodiments, an annular cavity 801 is formed inside the driving ring 8, and the crushing teeth 4 include:

[0078] The first rod body 401 penetrates the driving ring 8 from the outside and extends to the inside of the annular cavity 801 ; a wear fitting 402 is fixedly mounted on the side wall of the first rod body 401 located at the circumferential boundary 7 .

[0079] The second rod 403 passes through the drive ring 8 and the first drive shaft 3 from the inside of the annular cavity 801 and extends to the inside of the through hole 301 ; the second rod 403 abuts against the first rod 401 and the second drive shaft 6 respectively.

[0080] In this embodiment, the interior of the drive ring 8 is designed with an annular cavity 801, which provides assembly space for the components of the crushing tooth 4. The annular cavity 801 allows the components of the crushing tooth 4 to move freely inside while maintaining the overall structural integrity; the first rod body 401 is designed to penetrate from the outside of the drive ring 8 to the inside of the annular cavity 801. This design allows the first rod body 401 to be directly connected to the operating part of the crushing tooth 4. Wear fittings 402 are installed on the side walls of the circumferential boundary 7. The purpose of setting these wear fittings 402 is to reduce wear and improve durability, especially in high load and high wear environments; the second rod body 403 starts from the inside of the annular cavity 801, penetrates the drive ring 8 and the first drive shaft 3, and finally extends to the inside of the through hole 301. This design allows the second rod body 403 to effectively abut against the first rod body 401 and the second drive shaft 6, thereby providing stable force transmission and position control during the operation of the crusher.

[0081] When the second drive shaft 6 moves, since the second rod body 403 is directly connected to it, this movement can be transmitted to the first rod body 401 through the second rod body 403, thereby adjusting the position of the crushing tooth 4. Since the first rod body 401 is fixed on the drive ring 8, the movement of the crushing tooth 4 will be very stable, ensuring the accuracy and uniformity of the crushing operation; the use of the wear assembly 402 reduces the wear caused by frequent movement and friction, and extends the service life of the crushing tooth 4 and its related components. This not only reduces maintenance costs, but also ensures the performance stability of the machine in long-term operation; the design of the second rod body 403 ensures the efficiency and accuracy of the power transmission from the second drive shaft 6 to the crushing tooth 4. This transmission mechanism allows the crusher to adjust the position of the crushing tooth 4 as needed to meet the crushing needs of different materials.

[0082] By precisely controlling the position of the crushing teeth 4, it is ensured that each operation during the crushing process can achieve the expected crushing effect, thereby improving product quality; the use of the wear assembly 402 and the optimized structural design reduces conventional wear, extends the maintenance cycle of the equipment, and reduces operating costs; the stable and precise movement of the crushing teeth 4 improves the crushing efficiency, enabling the equipment to process more materials quickly and effectively.

[0083] Specifically, the drive ring 8 is formed by a first ring body 802 formed along the circumference of the first drive shaft 3 and two second ring bodies 803, and an annular cavity 801 is formed between the two second ring bodies 803, the first ring body 802 and the first drive shaft 3. The first ring body 802 and the second ring body 803 are fixed and assembled by bolts.

[0084] As can be seen from the above, the ring bodies 803 are formed along the circumference of the first drive shaft 3, usually as the main body of the drive ring 8, and provide the basic shape and support of the structure; the two second ring bodies 803 are combined with the first ring body 802 to close to form a complete drive ring 8. The design of these ring bodies makes the drive ring 8 more solid and stable in terms of physical and mechanical properties; the first ring body 802 and the second ring body 803 are fixed and assembled by bolts. The use of bolts allows the ring bodies to be removed or replaced when necessary, while ensuring that the connection between the ring bodies is stable during operation, reducing loosening caused by vibration or impact.

[0085] When the first ring body 802 and the two second ring bodies 803 are assembled by bolting, the annular cavity 801 formed between them and the first drive shaft 3 provides space for installing the crushing teeth 4 and related components. The design of the annular cavity 801 ensures the stability and safety of the crushing teeth 4 components during operation; the drive ring 8 is a supporting structure for the crushing teeth 4, and its stability directly affects the efficiency and life of the crushing teeth 4. Through the bolt-fixed structural design, the drive ring 8 provides the necessary mechanical support during the operation of the crusher, ensuring that the crushing teeth 4 can evenly and effectively transmit the crushing force.

[0086] The sturdy design of the drive ring 8 reduces the risk of mechanical failure during operation and improves the reliability and durability of the entire machine; the bolt-fixed assembly method makes it easier to maintain and replace the ring body or internal components, reduces downtime and improves production efficiency; the stable drive ring 8 ensures uniform force distribution of the crushing teeth 4 during the crushing process, thereby improving the crushing effect and material handling quality.

[0087] In any of the above embodiments, the drive rings 8 are arranged and stacked in sequence along the axial direction on the first drive shaft 3, and the opposite side walls of the drive rings 8 located at the two ends along the axial direction are respectively fitted with annular sealing plates 14, and the two annular sealing plates 14 are fixedly connected by a plurality of circumferentially arranged connecting rods 15, and the connecting rods 15 axially penetrate each second ring body 803 to synchronize the rotation of all the drive rings 8 during the rotation of the first drive shaft 3.

[0088] In this embodiment, the drive rings 8 are stacked in sequence along the axial direction of the first drive shaft 3. This stacking method enables each drive ring 8 to evenly bear the rotational force from the transmission shaft, ensuring the uniform distribution of the crushing force; the opposite side walls of the drive rings 8 located at the two ends along the axial direction are respectively fitted with annular sealing plates 14. These annular sealing plates 14 play the role of stabilizing and closing the stacking structure of the drive rings 8; the connecting rods 15 axially penetrate each second ring body 803 and are fixedly connected by multiple connecting rods 15 arranged circumferentially. These connecting rods 15 not only provide additional structural support, but also ensure that all drive rings 8 can rotate synchronously, avoiding the imbalance and friction that may be caused by individual rotation.

[0089] When the first drive shaft 3 starts to rotate, its rotational force is directly transmitted to the crushing teeth 4 through the drive ring 8. Since all the drive rings 8 are interconnected by the connecting rod 15, their rotation is locked to be synchronized, which ensures that all the crushing teeth 4 act on the material at the same time, improving the crushing efficiency; the connecting rod 15 ensures a tight connection and uniform force distribution between the drive rings 8. This design reduces equipment wear caused by uneven forces during crushing operations and enhances the durability of the entire equipment; although the connecting rod 15 provides structural stability, its design also takes into account the convenience of maintenance and replacement. The configuration of the connecting rod 15 and the annular sealing plate 14 allows the corresponding components to be easily disassembled when maintenance or replacement is required.

[0090] The synchronous operation of the drive ring 8 ensures the uniform and effective action of the crushing teeth 4, thereby improving the crushing efficiency and material processing speed; the uniform force distribution and reduced friction and wear of the structure extend the service life of the equipment and reduce operating costs; through the design of the annular sealing plate 14 and the connecting rod 15, the structural stability of the entire crusher is improved, which is particularly important for processing hard or bulky materials.

[0091] Specifically, a plurality of first insertion holes 8032 for the connecting rod 15 to pass through are opened circumferentially on the second ring body 803 , and a plurality of third insertion holes 804 for the first rod body 401 to pass through are opened circumferentially on the first ring body 802 .

[0092] As can be seen from the above, the multiple first plug holes 8032 opened circumferentially on the second ring body 803 are used for the connecting rod 15 to pass through. The positions and sizes of these plug holes are precisely configured to ensure that the connecting rod 15 can pass through stably and be fixed in an appropriate position, thereby providing structural support and synchronous rotation functions in the entire drive ring 8 system; the multiple third plug holes 804 opened circumferentially on the first ring body 802 are used for the first rod body 401 to pass through. These plug holes allow the first rod body 401 to pass through from the outside to the inside of the annular cavity 801, thereby connecting the crushing tooth 4 and ensuring that it can correctly interact with the drive ring 8.

[0093] When the connecting rods 15 are installed through the first socket 8032 of the second ring body 803, they span multiple drive rings 8 and lock the position and synchronous operation of the drive rings 8 by fixing them on the annular cover plate 14. This connection method ensures that all drive rings 8 can rotate evenly and synchronously during the rotation of the first drive shaft 3, increasing the overall stability and crushing efficiency of the machine; the first rod body 401 enters the drive ring 8 through the third socket 804 of the first ring body 802 and is directly connected to the crushing tooth 4. This configuration allows the crushing tooth 4 to move synchronously with the drive ring 8 and adjust its position according to the crushing requirements. The installation of the first rod body 401 ensures that the crushing tooth 4 can effectively transmit force and withstand heavy loads during the crushing process.

[0094] The precisely configured third socket 804 and the first rod body 401 and connecting rod 15 installed through them ensure precise control of the drive ring 8 and the crushing teeth 4, thereby improving the accuracy and overall efficiency of the crushing process; the stable installation of the connecting rod 15 reduces vibration and imbalance during operation, thereby reducing wear and maintenance requirements of the machine; through evenly distributed structural loads and synchronous operation, the reliability and durability of the entire crushing system are improved.

[0095] In any of the above embodiments, a slot 302 is axially provided on the outer wall of the first drive shaft 3, and the slots 302 are evenly spaced along the circumference of the first drive shaft 3; a rib 8031 ​​is formed on the inner wall of the second ring body 803 and the inner wall of the power input wheel 12, and the rib 8031 ​​is matched with the slot 302, so that the second ring body 803 and the power input wheel 12 can move axially along the first drive shaft 3 and can generate power transmission with the first drive shaft 3.

[0096] In this embodiment, the outer wall of the first drive shaft 3 is provided with slots 302 along the axial direction, and these slots 302 are arranged at equal intervals along the axial direction. This design allows the slots 302 to be precisely matched with the convex ribs 8031 ​​on the second ring body 803 and the power input wheel 12 to achieve mechanical locking and power transmission between components; the inner wall of the second ring body 803 and the inner wall of the power input wheel 12 are both formed with convex ribs 8031 ​​adapted to the slots 302 of the first drive shaft 3. These convex ribs 8031 ​​are designed to be plugged into the slots 302 to ensure that these components can operate stably on the first drive shaft 3, and are convenient for axial adjustment when necessary.

[0097] When the power input wheel 12 receives power from an external motor or other power source, the power is transmitted to the first drive shaft 3 through the convex rib 8031 ​​on the inner wall. Due to the cooperation between the convex rib 8031 ​​and the slot 302, the power input wheel 12 can effectively transmit the rotational force to the drive shaft, thereby driving the entire system; since the second ring body 803 and the power input wheel 12 can move along the axial direction of the first drive shaft 3, the adaptation of the convex rib 8031 ​​and the slot 302 allows these components to be adjusted in position without being separated from the drive shaft. This design not only facilitates the commissioning and maintenance of the machine, but also allows the position of the crushing tooth 4 to be adjusted according to operational requirements.

[0098] Accurate power transmission and component positioning ensure efficient and precise machine operation, thereby improving crushing efficiency and material handling quality; precise structural fit reduces wear and failures that may be caused by component misalignment or loosening, extending the service life of the equipment; the movable design of components makes maintenance and necessary mechanical adjustments more convenient, reducing maintenance costs and shortening downtime.

[0099] Furthermore, second insertion holes 303 for the second rod body 403 to pass through are respectively opened radially on the outside of the first driving shaft 3, and the second insertion holes 303 are respectively connected with the slot 302 and the through hole 301. On the one hand, the second rod body 403 can pass through the first driving shaft 3, and on the other hand, the first driving shaft 3 can drive the second rod body 403 to move circumferentially, and further drive the first rod body 401 and the wear assembly 402 to move circumferentially.

[0100] As can be seen from the above, the second plug hole 303 is opened along the radial direction of the first drive shaft 3, and each plug hole is connected to the slot 302 and the through hole 301. This design allows the second rod body 403 to directly penetrate the first drive shaft 3 from the outside, achieving complete penetration from one end to the other end; the second rod body 403 passes through the second plug hole 303 of the first drive shaft 3, which not only fixes the position of the second rod body 403, but also enables the first drive shaft 3 to drive the second rod body 403 to move circumferentially; through the circumferential movement of the second rod body 403, the power is further transmitted to the first rod body 401 and the wear assembly 402 thereon. This transmission ensures that all related components can move circumferentially synchronously, enhancing the uniformity and efficiency of the crushing process.

[0101] When the first drive shaft 3 receives power and starts to rotate, the rotational power is transmitted to the second rod body 403 through the second rod body 403 in the second socket 303. Since the second rod body 403 is tightly matched with the first drive shaft 3, it rotates synchronously with the rotation of the shaft; the rotational power of the second rod body 403 is transmitted through its connection with the first rod body 401, so that the first rod body 401 and the wear assembly 402 thereon also follow the circumferential movement. This design ensures that the crushing teeth 4 can evenly apply force to the crushed material; the synchronous circumferential movement reduces local wear and increases the service life of the crushing teeth 4 and the wear assembly 402. At the same time, the uniform force distribution ensures the maximization of the crushing efficiency and improves the economic benefits and reliability of the entire system.

[0102] The synchronous movement of the crushing teeth 4 improves the operating efficiency of the crusher and ensures uniform crushing of the material; the tight and uniform connection within the system reduces mechanical vibration and wear caused by uneven loads; the designed uniform force distribution and reliable power transmission mechanism reduce maintenance requirements and reduce long-term operating costs.

[0103] In any of the above embodiments, the second rod 403 points to the second drive shaft 6 along the radial direction of the first drive shaft 3 , and a middle side wall of the second rod 403 forms an inclined surface 4031 , which abuts against one end of the first rod 401 located in the annular cavity 801 .

[0104] In this embodiment, the second rod 403 points to the second drive shaft 6 along the radial direction of the first drive shaft 3, forming a bridge connecting the two main power sources. This structural design enables the second rod 403 to directly transmit the power or adjustment signal from the second drive shaft 6 to the first drive shaft 3 and the drive ring 8; the inclined surface 4031 formed on the middle side wall of the second rod 403 is a key contact surface, which abuts against one end of the first rod 401 in the annular cavity 801. The angle and position of the inclined surface 4031 are precisely designed to ensure effective transmission of force and motion between the first rod 401 and the second rod 403.

[0105] When the second drive shaft 6 receives external power and starts to rotate or adjust, these changes are transmitted through the second rod body 403. The inclined surface 4031 of the second rod body 403 contacts the first rod body 401, so that the power or position adjustment from the second drive shaft 6 can be accurately transmitted to the first rod body 401, thereby affecting the position and movement of the crushing tooth 4 connected thereto; due to the abutment between the inclined surface 4031 of the second rod body 403 and the first rod body 401, a high degree of adjustment accuracy can be maintained even under high load or high-speed operation conditions. This ensures that the crushing tooth 4 can perform crushing operations according to the predetermined precise position, enhancing the efficiency and consistency of the crushing process.

[0106] The precise power and position transmission mechanism ensures that the crushing teeth 4 can be precisely adjusted according to specific operational requirements, thereby improving the crushing efficiency and consistency of product quality; the design of the inclined surface 4031 and the rod body reduces friction and wear during movement, and enhances the reliability and stability of the entire mechanical structure; through the design of the inclined surface 4031, the second rod body 403 can adjust the position of the first rod body 401 within a wider range, providing greater operational flexibility and the ability to adapt to different crushing requirements.

[0107] In any of the above embodiments, a shoulder 4011 located in the annular cavity 801 is formed on the first rod body 401 , and the inner wall of the annular cavity 801 corresponding to the shoulder 4011 is connected to the shoulder 4011 via a spring 9 .

[0108] The elastic deformation direction of the spring 9 points to the abutment point between the inclined surface 4031 and the first rod body 401 .

[0109] In this embodiment, a shoulder 4011 is formed on the first rod body 401 and is located in the annular cavity 801. The shoulder 4011, as a raised part, provides a fixed point for installing the spring 9 and structurally enhances the overall stability of the first rod body 401; the inner wall of the annular cavity 801 has a connection point at the corresponding position of the shoulder 4011, which is connected to the shoulder 4011 through the spring 9. This design allows the spring 9 to provide the necessary elastic force during the operation of the crusher to support or adjust the position of the first rod body 401; the elastic deformation direction of the spring 9 points to the abutment between the inclined surface 4031 and the first rod body 401. Such a direction setting ensures that when the first rod body 401 is subjected to external forces, the spring 9 can effectively absorb and alleviate these forces, prevent direct transmission to the driving structure, and reduce impact and wear.

[0110] During the operation of the crusher, when the first rod 401 moves due to the power input of the second rod 403 or external load, the spring 9 on the shoulder 4011 plays a buffering role. The deformation of the spring 9 can absorb part of the power impact, reduce the damage caused by hard contact, and maintain the stable position of the first rod 401; the spring 9 not only provides buffering, but also helps the first rod 401 return to the initial or preset position after the external force is eliminated. This automatic reset function is achieved through the natural elastic force of the spring 9, ensuring the continuity and repeatability of the operation of the crushing tooth 4.

[0111] Through the dynamic adjustment function of the spring 9, the pressure and position of the crushing teeth 4 can be controlled more accurately, thereby improving the crushing efficiency and the uniformity of material handling; the buffering effect of the spring 9 reduces the direct collision and wear between mechanical parts, extending the service life and maintenance cycle of the equipment; the automatic position resetting reduces the need for manual adjustment, simplifies the operation process, and reduces maintenance costs.

[0112] In any of the above embodiments, a line connecting the wear fitting 402 and the abutment portion forms an angle with a line connecting the axis of the second drive shaft 6 and the abutment portion.

[0113] The opening direction of the angle faces the moving direction of the wear fitting 402, and / or the angle of the angle is not greater than ninety degrees.

[0114] In this embodiment, the angle formed between the line connecting the abutment point of the wear assembly 402 and the first rod body 401 and the axis of the second drive shaft 6 is designed to be no greater than ninety degrees, and the opening direction faces the movement direction of the wear assembly 402. Such an angle configuration optimizes the force transmission path, so that the power is more effectively converted into the movement required by the wear assembly 402; by accurately calculating the angle, it can ensure that the power received by the wear assembly 402 is maximized, while reducing the energy loss caused by the non-linear transmission of force, which is crucial to improving the working efficiency of the entire crusher and reducing energy consumption.

[0115] When the second drive shaft 6 rotates and transmits power through the inclined surface 4031, the connecting line between the wear assembly 402 and the abutment forms an optimized angle with the axis of the second drive shaft 6, so that the force directly and effectively supports the movement of the wear assembly 402. This direct force transmission method enhances the crushing force and stability of the crusher; through the scientific setting of the angle, the friction and wear of the wear assembly 402 when receiving power are reduced, because the direction of the force is more consistent with the movement direction of the wear assembly 402, which reduces abnormal wear of parts and prolongs the service life of the wear assembly 402 and related components.

[0116] More effective force transmission enables the crushing teeth 4 to control the crushing operation more accurately and improve crushing efficiency; optimized force transmission reduces vibration and instability factors during operation and improves the overall stability of the equipment; the wear rate of the wear assembly 402 and key components is reduced, reducing the frequency of maintenance and replacement, thereby reducing operating costs.

[0117] In any of the above embodiments, the crushing plate 5 is elastically mounted on the housing 1, and the crushing plate 5 and the second drive shaft 6 are respectively provided with a detection end 10 outside the inner cavity 101, and the detection end 10 corresponds to the outer wall of the housing. The detection end 10 is a plate body corresponding to the side wall of the housing 1, and a laser sensor 11 for measuring the position of the plate body is installed at a corresponding position of the side wall of the housing 1.

[0118] In this embodiment, the crushing plate 5 is elastically mounted on the housing 1. This mounting method allows the crushing plate 5 to have a certain displacement when impacted by the material, thereby absorbing the impact force, reducing direct damage, and automatically adjusting the position according to the pressure of the material to improve the crushing efficiency; the crushing plate 5 and the second drive shaft 6 are located outside the inner cavity 101 and are each provided with a detection end 10, which is a plate body corresponding to the side wall of the housing 1. This design enables the detection end 10 to intuitively reflect the position change of the crushing plate 5; a laser sensor 11 for measuring the plate body position of the detection end 10 is installed at the corresponding position of the side wall of the housing 1. The laser sensor 11 accurately measures the current position of the crushing plate 5 by emitting and receiving laser signals, and can maintain a high degree of measurement accuracy even under extreme working conditions.

[0119] During the crushing operation, the crushing plate 5 may move due to the impact of materials of different sizes or hardness. The laser sensor 11 monitors this position change in real time and provides continuous feedback information to the control system; based on the data provided by the laser sensor 11, the control system can adjust the position of the second drive shaft 6 or change the pressure setting of the crushing plate 5 to adapt to the processing requirements of different materials and optimize the crushing effect; the elastic installation of the crushing plate 5 allows it to move appropriately when it is subjected to excessive impact. Such a mechanical "buffer" effect protects the crusher from excessive damage and can automatically reset to the optimal position.

[0120] Real-time monitoring and automatic adjustment of the crushing plate 5 position ensures the continuity and uniformity of the crushing process, improving processing efficiency and product quality; the elastic installation and dynamic monitoring system reduces the impact damage caused by hard materials and extends the service life of the crusher; through the precise control and monitoring system, it reduces unplanned maintenance and repairs caused by improper crushing plate 5 position, reducing operating costs.

[0121] Specifically, a spring column 13 is installed on the housing 1 , and an elastically movable end of the spring column 13 is fixedly connected to a side wall of the crushing plate 5 facing away from the crushing teeth 4 .

[0122] As can be seen from the above, the spring column 13 is mounted on the housing 1 and has an elastically movable end. This end is fixedly connected to the back of the crushing plate 5 through an appropriate connection mechanism (such as bolts or welding). The design of the spring column 13 enables it to be compressed or stretched when subjected to load, providing the necessary elastic support; through the connection of the spring column 13, the crushing plate 5 can be limitedly displaced when subjected to a large crushing force or an unexpected impact, and this displacement can absorb the impact energy and reduce direct damage to the crushing plate 5 and the entire crusher structure.

[0123] When the crusher is in operation, the crushing plate 5 may be directly impacted by irregular or large pieces of material. The spring column 13 allows the crushing plate 5 to move or rebound slightly under these impacts, effectively absorbing and dispersing the impact force, and preventing damage to the crushing plate 5 or the drive mechanism due to excessive impact; the spring column 13 not only provides impact absorption, but also automatically restores the crushing plate 5 to its original position after the impact force is eliminated. This ensures the continuous operation of the crusher and the continuity of material processing, and avoids the loss of efficiency due to position deviation.

[0124] The elastic connection reduces the potential damage of hard materials to the crushing plate 5 and the crusher itself, extending the service life of the equipment and reducing maintenance requirements; through elastic absorption and position reset functions, the crusher can handle various materials more stably and reliably, improving operational consistency and output quality; it reduces the need for repairs and adjustments due to unexpected impacts or abnormal operations, reducing maintenance costs and potential downtime.

[0125] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0126] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An impact crusher for sand and stone processing, It is characterized in that include: The shell has an inner cavity; the inner cavity is used for the sand and gravel to pass through the shell along a flow path; the inner cavity is equipped with a screening plate on the flow path; A first drive shaft is rotatably mounted on the housing; the first drive shaft passes through the inner cavity, and a portion of the first drive shaft located in the inner cavity is provided with a plurality of crushing teeth, and the inner cavity is provided with a crushing plate matched with the crushing teeth; The second drive shaft is slidably mounted on the housing; the first drive shaft is provided with a through hole in the axial direction, and the first drive shaft is sleeved with the second drive shaft through the through hole; along the radial direction of the first drive shaft, the crushing teeth extend to the inside of the through hole and abut against the circumferential side wall of the second drive shaft; the second drive shaft can move in the through hole along the axial direction of the first drive shaft to drive all the crushing teeth to approach the screening plate and the crushing plate; Along the circumference of the first drive shaft, ends of all the crushing teeth away from the first drive shaft form a circumferential boundary during movement; a first gap for crushing the sand and gravel is formed between the crushing plate and the circumferential boundary, and a second gap for screening the sand and gravel is formed between the screening plate and the circumferential boundary; A plurality of crushing teeth corresponding to each other along the circumferential direction of the first driving shaft form a group, and the crushing teeth in the same group are assembled on the first driving shaft through a driving ring; An annular cavity is formed inside the driving ring, and the crushing tooth includes a first rod body and a second rod body; the first rod body penetrates the driving ring from the outside and extends to the inside of the annular cavity; a wear fitting is fixedly installed on the side wall of the first rod body corresponding to the circumferential boundary; the second rod body penetrates the driving ring and the first driving shaft from the inside of the annular cavity and extends to the inside of the through hole; the second rod body abuts against the first rod body and the second driving shaft respectively; The second rod body points to the second driving shaft along the radial direction of the first driving shaft, and a middle side wall of the second rod body is formed with an inclined surface, and the inclined surface abuts against one end of the first rod body located in the annular cavity; A shoulder located in the annular cavity is formed on the first rod body, and the inner wall of the annular cavity corresponding to the shoulder is connected to the shoulder through a spring; the elastic deformation direction of the spring points to the abutment between the inclined surface and the first rod body.

2. The impact crusher for sand and stone processing according to claim 1, It is characterized in that The first gap and the second gap are respectively located inside the inner cavity, and the first gap, the second gap and the inner cavity are connected to each other; Along the direction of the flow path, the gap distance of the first gap gradually decreases; the first gap has an inlet with the largest gap distance and an outlet with the smallest gap distance; The second gap has the same gap distance at every location along the direction of the flow path; and the second gap is a circumferential arc-shaped space.

3. The impact crusher for sand and stone processing according to claim 2, It is characterized in that The circumferential side wall of the second driving shaft is formed with a conical surface, and all the crushing teeth are in contact with the conical surface; When the conical surface drives the crushing teeth to approach the screening plate and the crushing plate, the ratio of the gap distance between the inlet and the outlet of the first gap increases, and the gap distance of the second gap decreases equidistantly in the circumferential direction.

4. The impact crusher for sand and stone processing according to claim 3, It is characterized in that A line connecting the wear fitting and the abutment and a line connecting the axis of the second drive shaft and the abutment form an angle; The opening direction of the angle faces the moving direction of the wear fitting, and the angle of the angle is no greater than ninety degrees.

5. The impact crusher for sand and stone processing according to claim 1, It is characterized in that The crushing plate is elastically mounted on the outer shell. The crushing plate and the second driving shaft are located outside the inner cavity and are respectively provided with detection ends, and the detection ends correspond to the outer wall of the outer shell.

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