An eccentric assembly for a multi-cylinder hydraulic cone crusher
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 覃文龙
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-21
Smart Images
Figure CN120790273B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of cone crusher technology, specifically to an eccentric assembly of a multi-cylinder hydraulic cone crusher. Background Technology
[0002] The eccentric assembly of a multi-cylinder hydraulic cone crusher mainly consists of an eccentric sleeve, a copper bushing, an eccentric sleeve bushing, a counterweight, sealing gaskets, and a counterweight cover. These components work together to achieve efficient and stable crushing operations. Among them, the eccentric sleeve is the core component that drives the moving cone to perform its gyratory motion.
[0003] When crushing materials of different particle sizes, the eccentric sleeve, under the action of the transmission unit, drives the moving cone to provide crushing force. The moving cone oscillates along its inner surface. Near the fixed cone, the uncrushed material is crushed by the compression and bending of the moving cone. In the area away from the moving cone, the crushed material that meets the standard falls from the bottom of the cone due to gravity. However, due to the different particle sizes, larger particles cannot reach the space between the moving and fixed cones. Over a long period of time, the material will block the inlet. If the initial distance between the moving and fixed cones is set large, the material cannot fall and be collected according to the required particle size when the moving cone is compressing it, thus affecting the normal operation of the crusher. Therefore, different equipment needs to be changed to meet the needs of different diameters for different scenarios and materials. However, when crushing irregular particle sizes, it is difficult to switch between different crushers in time, and screening is not possible when there is a large amount of material, making it difficult to guarantee the crushing quality of the crusher.
[0004] Furthermore, large materials exert a greater force on the surface of the moving cone within the eccentric assembly. When crushing large materials, the crusher's rotational speed is often increased to reduce the stress on the contact surfaces of the moving and fixed cones. Due to the gap between the main shaft and the eccentric bushing, when the crusher switches from no-load to heavy-load operation, the eccentric bushing will be subjected to a load impact, resulting in a hard impact on the eccentric bushing. If the gap between the main shaft and the eccentric bushing is too small, a high main shaft speed can easily cause a runaway phenomenon, i.e., the main shaft and the eccentric bushing seize up, making it difficult for the eccentric bushing speed to increase under the action of the main shaft, thus affecting the adjustment of the crushing effect when crushing materials of different sizes.
[0005] Based on this, in order to solve the problem that speed adjustment affects the connection and relative movement between the eccentric bushing and the main shaft when switching between crushing materials of different sizes, thus affecting the normal operation of the eccentric assembly, this invention designs an eccentric assembly for a multi-cylinder hydraulic cone crusher. Summary of the Invention
[0006] This invention provides an eccentric assembly for a multi-cylinder hydraulic cone crusher, which solves the problem that speed adjustment affects the connection and relative movement between the eccentric sleeve and the main shaft when switching between crushing materials of different sizes, thus affecting the normal operation of the eccentric assembly. By changing the rotational speed to change the distance between the moving cone and the fixed cone, the stress on the eccentric sleeve during rotation is adjusted by magnetic adsorption when the distance increases, thereby reducing the impact of changes in the main shaft speed on the eccentric assembly.
[0007] To achieve the above objectives, the present invention provides the following technical solution:
[0008] This invention provides an eccentric assembly for a multi-cylinder hydraulic cone crusher, comprising a shell, a hydraulic device, a frame, a main shaft, a transmission mechanism, an eccentric sleeve, a centrifugal ring, a moving cone, an adjusting mechanism, a fixed cone, and a limiting mechanism. The main shaft is installed at the center of the frame. The transmission mechanism passes through the shell, and the eccentric sleeve is connected to the transmission mechanism. The centrifugal ring is installed above the main shaft, and the moving cone is installed outside the centrifugal ring. The adjusting mechanism is installed between the moving cone and the centrifugal ring. The fixed cone is installed on the shell and is located above the moving cone. The limiting mechanism is installed at the moving cone and the eccentric sleeve. When the rotational speed increases, the centrifugal ring drives the moving cone downward through the adjusting mechanism. When the moving cone moves downward, the limiting mechanism adjusts the distance between the moving cone and the eccentric sleeve.
[0009] The limiting mechanism can control the distance between the eccentric sleeve and the moving cone. On the one hand, the eccentric sleeve can make the moving cone swing by changing the spacing. On the other hand, as the spindle speed increases, the adjusting mechanism lowers the moving cone. After the moving cone descends, the limiting mechanism will create a certain gap between the eccentric sleeve and the moving cone, so that the problem of "runaway" will not occur due to the two contacting each other, thereby improving the crushing effect of large-diameter materials.
[0010] Preferably, the adjusting mechanism includes a slot, a centrifugal block, a limiting block, a return spring, a support column, a compression spring, an adsorption magnet, a mounting cavity, and a magnetic ball. The slots are arranged in a circumferential array around the centrifugal ring. The centrifugal block is slidably installed in the slot. The limiting block is installed on the centrifugal ring and corresponds to the centrifugal block. The return spring is installed between the limiting block and the eccentric sleeve. The support column is installed above the main shaft and connected to the moving cone. The compression spring is installed between the support column and the moving cone. The adsorption magnet is installed below the support column. The mounting cavity is opened above the eccentric sleeve, and the magnetic ball is installed in the mounting cavity. When it is necessary to crush large-diameter materials, by increasing the rotation speed, the distance between the moving cone and the fixed cone can be automatically expanded, thereby improving the crushing speed and efficiency of large-diameter materials, while avoiding material accumulation and blockage.
[0011] Preferably, the outer surface of the eccentric sleeve is the contact surface, the inner surface of the eccentric sleeve is the driving surface, and the connection between the main shaft and the eccentric sleeve is a tapered engagement. The tapered engagement improves the relative movement of the eccentric sleeve in the longitudinal direction and also improves the relative fixation of the eccentric sleeve and the main shaft in the circumferential direction.
[0012] Preferably, the limiting mechanism includes an annular magnet, a magnet with the same pole, an annular groove, a positive magnet, a misalignment groove, and a fixed magnet. The annular magnet is installed at the lower end of the moving cone, the magnet with the same pole is installed inside the eccentric sleeve and directly opposite the annular magnet, the annular groove is opened on the inner side of the moving cone, the positive magnet is located in the annular groove, the misalignment groove is opened on the eccentric sleeve, and the fixed magnet is installed in the misalignment groove. Initially, the positive magnet in the annular groove does not intersect with the fixed magnet in the misalignment groove. However, after the moving cone descends, the positive magnet in the annular groove corresponds to the fixed magnet in the misalignment groove. The fixed magnet generates a certain repulsive force on the positive magnet in the annular groove, reducing the impact of the load on the eccentric sleeve, extending the service life of the eccentric sleeve, and improving the efficiency of the crusher.
[0013] Preferably, the moving cone and the eccentric sleeve are provided with through holes, and an oil pipe is installed in the through holes to avoid leakage problems caused by changes in position.
[0014] Preferably, the magnetic ball is non-fixed and has a slot in the mounting cavity. The magnetic ball is initially located near the center of the slot. When the rotation speed increases, the magnetic ball is subjected to centrifugal force and moves to the periphery, which corresponds to the adsorption magnet that opens above, thereby causing the moving cone to descend further.
[0015] Preferably, the same-pole magnets are distributed in a ring array, and the magnetism of a single same-pole magnet is enhanced along the rotational direction of the main axis, but the maximum period can only be 180°.
[0016] Preferably, the annular magnet is divided into a strong magnetic part and a weak magnetic part, which are alternately distributed. When the strong magnetic part is strongly magnetized by the same pole magnet, the adjacent weak magnetic part will be appropriately reduced, thereby causing the moving cone to swing to the lowest point.
[0017] Preferably, the limiting block is provided with a wedge-shaped surface. The limiting block is symmetrical about the center of the main shaft. The wedge-shaped surface can drive the limiting block to move towards the center when resetting, and then gradually push the moving cone upward under the action of the reset spring.
[0018] Preferably, the longitudinal strength of the limiting block is greater than the gravitational strength of the moving cone, and the surface of the moving cone is provided with protrusions. These protrusions are made of hard rubber to avoid hard contact between the moving cone and the fixed cone when the distance between them is small, which could cause machine damage.
[0019] The beneficial effects of this invention are as follows:
[0020] 1. This invention proposes an eccentric assembly for a multi-cylinder hydraulic cone crusher. By increasing the rotational speed of the transmission mechanism, the main shaft speed is accelerated, thereby improving the crushing efficiency of the moving and fixed cones. As the main shaft speed increases, the centrifugal force on the centrifugal blocks in the slot increases, causing the centrifugal blocks to push the limiting block outward. The limiting block slides outward within the slot, compressing the return spring. The center of the moving cone in the support column moves downward, compressing the compression spring. The compression spring moves downward, increasing the distance between the upper surface of the moving cone and the lower surface of the fixed cone. Simultaneously, the adsorption magnet below the moving cone attracts the magnetic ball in the mounting cavity, causing the moving cone to move downward. Under the reverse action of the compression spring, it provides support stability. On the one hand, when crushing large-diameter materials, the increased rotational speed automatically widens the distance between the moving and fixed cones, preventing material accumulation and blockage, while simultaneously improving the crushing speed and efficiency of large-diameter materials.
[0021] 2. The present invention proposes an eccentric assembly for a multi-cylinder hydraulic cone crusher. The limiting mechanism can control the distance between the eccentric sleeve and the moving cone. On the one hand, the eccentric sleeve can make the moving cone swing by changing the spacing. On the other hand, as the speed of the main shaft increases, the adjusting mechanism lowers the moving cone. After the moving cone descends, a certain gap is formed between the eccentric sleeve and the moving cone by the limiting mechanism. This gap exists under the action of like magnets. However, due to the high rotation speed, the two will also rotate and move relative to each other, but there will be no problem of "runaway" caused by the two contacting each other, thereby improving the crushing effect of large-diameter materials.
[0022] 3. The eccentric assembly of a multi-cylinder hydraulic cone crusher proposed in this invention allows the moving cone to move downwards. At this time, the annular magnet at the bottom of the moving cone approaches the magnet of the same pole. The annular magnet and the magnet of the same pole have a certain repulsive force, preventing the moving cone from excessively compressing the spring due to gravity inertia during its descent, thus avoiding excessive descent. Simultaneously, the inner surface of the moving cone and the contact surface undergo longitudinal relative displacement. Initially, the positive magnet in the annular groove does not intersect with the fixed magnet in the misalignment groove. However, after the moving cone descends, the positive magnet in the annular groove aligns with the fixed magnet in the misalignment groove. The fixed magnet generates a certain repulsive force on the positive magnet in the annular groove, reducing the mutual impact and reaction force between the eccentric sleeve and the moving cone. This reduces the impact of the eccentric sleeve load, extends the service life of the eccentric sleeve, and improves the crusher's efficiency. Attached Figure Description
[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are one embodiment of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;
[0025] Figure 2 This is a schematic diagram of the interior of the outer casing of the present invention;
[0026] Figure 3 This is a sectional view inside the moving cone;
[0027] Figure 4 This is a schematic diagram of the adjustment mechanism of the present invention;
[0028] Figure 5 yes Figure 4 Enlarged view of point A in the middle;
[0029] Figure 6 This is a schematic diagram of the limiting mechanism of the present invention;
[0030] Figure 7 yes Figure 6 Enlarged view of point B in the middle;
[0031] Figure 8 This is a schematic diagram of the limiting magnet and the same pole magnet of the present invention.
[0032] In the diagram: 1. Outer shell; 2. Hydraulic device; 3. Frame; 4. Main shaft; 5. Transmission mechanism; 6. Eccentric sleeve; 61. Contact surface; 7. Centrifugal ring; 8. Moving cone; 81. Through hole; 82. Protrusion; 9. Adjustment mechanism; 901. Slot; 902. Centrifugal block; 903. Limiting block; 9031. Wedge-shaped surface; 904. Return spring; 905. Support column; 906. Compression spring; 907. Adsorption magnet; 908. Mounting cavity; 9081. Groove; 909. Magnetic ball; 10. Fixed cone; 11. Limiting mechanism; 111. Ring magnet; 1111. Strong magnetic part; 1112. Weak magnetic part; 112. Same pole magnet; 113. Annular groove; 114. Positive pole magnet; 115. Misalignment groove; 116. Fixed magnet. Detailed Implementation
[0033] To better understand the above solution, the technical solution will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0034] like Figure 1-3As shown, the present invention provides an eccentric assembly for a multi-cylinder hydraulic cone crusher, comprising a housing 1, a hydraulic device 2, a frame 3, a main shaft 4, a transmission mechanism 5, an eccentric sleeve 6, a centrifugal ring 7, a moving cone 8, an adjusting mechanism 9, a fixed cone 10, and a limiting mechanism 11. The main shaft 4 is installed at the center of the frame 3. The transmission mechanism 5 passes through the housing 1. The eccentric sleeve 6 is connected to the transmission mechanism 5. The centrifugal ring 7 is installed above the main shaft 4. The moving cone 8 is installed outside the centrifugal ring 7. The adjusting mechanism 9 is installed between the moving cone 8 and the centrifugal ring 7. The fixed cone 10 is installed on the housing 1 and is located above the moving cone 8. The limiting mechanism 11 is installed at the moving cone 8 and the eccentric sleeve 6. When the rotational speed increases, the centrifugal ring 7 drives the moving cone 8 to move downward through the adjusting mechanism 9. When the moving cone 8 moves downward, the limiting mechanism 11 adjusts the distance between the moving cone 8 and the eccentric sleeve 6.
[0035] The outer casing 1 is vertically movable. The hydraulic device 2 consists of several hydraulic push rods on top of the outer casing 1. The hydraulic device 2 can drive the upper part of the outer casing 1 to move vertically, thereby driving the fixed cone 10 to move vertically. This allows for pre-control of the distance between the fixed cones 10, achieving material diameter control in the crusher. A frame 3 is located below the outer casing 1. The frame 3 is used to install the main shaft 4, transmission mechanism 5, and eccentric sleeve 6, etc. The transmission mechanism 5 drives the main shaft 4 to rotate. The transmission mechanism 5 consists of a motor and a bevel gear set. Driven by the motor, the bevel gear set rotates, thereby driving the main shaft 4 to rotate. The rotation of the main shaft 4 drives the eccentric sleeve 6. When the eccentric sleeve 6 rotates, it causes the moving cone 8 to move eccentrically, thus causing the moving cone 8 to oscillate. The centrifugal ring 7 is installed between the moving cone 8 and the eccentric sleeve 6. The moving cone 8 is installed inside the centrifugal ring 7 via a key and spring connection. There is a certain gap between the center of the centrifugal ring 7 and the center of the moving cone 8. When the centrifugal ring 7 needs to rotate relative to the moving cone 8, and the moving cone 8 needs to oscillate relative to the centrifugal ring 7, the moving cone 8 can provide some support under the action of the centrifugal ring 7. Specifically, a sliding bearing is installed at the connection between the moving cone 8 and the centrifugal ring 7, allowing the centrifugal ring 7 to rotate relative to the moving cone 8 and providing support. The function is that, since the moving cone 8 needs to be able to swing, the supporting force of a single limiting block 903 on the centrifugal ring 7 and the compression spring 906 is exactly equal to the weight of the moving cone 8 and the material (because the overall weight of the moving cone 8 is large, the compression spring 906 needs to have a certain supporting force, and the limited block 903 that is being compressed does not need to move under high-speed centrifugation, while the limited block 903 that is not being compressed moves under high-speed rotation). At this time, when the moving cone 8 deflects to the already centrifuged limited block 903, the originally compressed limited block 903 moves outward under the action of centrifugal force, and the original supporting force of the limited block 903 on the moving cone 8 disappears. At this time, the position of the moving cone 8 will drop, and the compression spring 906 will be compressed. After being compressed a certain distance, the compression spring 906 will fully support the moving cone 8. The compression spring 906 has a certain deformation capacity, so the moving cone 8 can swing. The edge of the moving cone 8 at this point can be provided with a ball joint or arc surface as needed to ensure that it can swing completely and move downward under the action of the centrifugal ring 7. When the speed decreases, under the influence of the return spring 904, multiple limit blocks 903 will simultaneously return to the center and move towards the center, and then insert themselves below the moving cone 8, gradually pushing the moving cone 8 upward to return to the center.
[0036] The above describes the adjustment mechanism 9 for the position of the moving cone 8. It is based on the internal material changing from small to large. However, during operation, the hydraulic system cannot be adjusted in time to drive the material. Even if the hydraulic system is adjusted, if the motor speed is not changed, the large pieces of material will be crushed slowly, requiring a reduction in the feeding speed, which will affect the overall work efficiency. If the feeding speed is not reduced, the slow crushing will cause the material to accumulate, which will affect the crushing efficiency and may even cause jamming.
[0037] While changing the motor speed, the distance between the moving cone 8 and the fixed cone 10 is automatically adjusted, thereby improving the crushing effect on large-diameter materials. At the same time, the limiting mechanism 11 can control the distance between the eccentric sleeve 6 and the moving cone 8. On the one hand, the eccentric sleeve 6 can make the moving cone 8 swing by changing the distance. On the other hand, as the speed of the main shaft 4 increases, the adjusting mechanism 9 lowers the moving cone 8. After the moving cone 8 falls, a certain gap is formed between the eccentric sleeve 6 and the moving cone 8 by the limiting mechanism 11. This gap exists due to the action of like magnets. However, due to the high rotation speed, the two will also rotate and move relative to each other, but there will be no problem of "runaway" caused by the two contacting each other, thereby improving the crushing effect on large-diameter materials.
[0038] like Figure 4-5 As shown, the adjustment mechanism 9 includes a slot 901, a centrifugal block 902, a limiting block 903, a return spring 904, a support column 905, a compression spring 906, an adsorption magnet 907, a mounting cavity 908, and a magnetic ball 909. The slot 901 is arranged in a circumferential array around the centrifugal ring 7. The centrifugal block 902 is slidably installed in the slot 901. The limiting block 903 is installed on the centrifugal ring 7 and corresponds to the centrifugal block 902. The return spring 904 is installed between the limiting block 903 and the eccentric sleeve 6. The support column 905 is installed above the main shaft 4 and is connected to the moving cone 8. The compression spring 906 is installed between the support column 905 and the moving cone 8. The adsorption magnet 907 is installed below the support column 905. The mounting cavity 908 is opened above the eccentric sleeve 6, and the magnetic ball 909 is installed in the mounting cavity 908.
[0039] Large-diameter materials are added during the crushing process. To ensure crushing efficiency, the rotation speed of the transmission mechanism 5 is increased, thereby accelerating the speed of the main shaft 4 and improving the crushing efficiency of the moving cone 8 and the fixed cone 10. As the speed of the main shaft 4 increases, the centrifugal force on the centrifugal block 902 in the slot 901 increases (centrifugal force is related to the mass of the object, its linear or angular velocity, and its radius). As the centrifugal force on the centrifugal block 902 increases, it pushes the limiting block 903 outward (the limiting block 903 itself also moves outward under the action of centrifugal force). The limiting block 903 slides outward within the slot 901, thereby squeezing the return spring 904. At this time, the return spring 904 is subjected to centrifugal force. When the centrifugal block 902 moves the limiting block 903 outward, the center of the moving cone 8 inside the centrifugal ring 7 moves downward, thereby squeezing the compression spring 906. The compression spring 906 moves downward, and the distance between the upper surface of the moving cone 8 and the lower surface of the fixed cone 10 increases. At the same time, the adsorption magnet 907 below the moving cone 8 will attract the magnetic ball 909 in the mounting cavity 908, thereby driving the moving cone 8 to move downward. Under the reverse action of the compression spring 906, it provides support stability. When it is necessary to crush large-diameter materials, by increasing the rotation speed, the distance between the moving cone 8 and the fixed cone 10 can be automatically expanded, thereby improving the speed and efficiency of crushing large-diameter materials, while avoiding material accumulation and blockage.
[0040] The outer surface of the eccentric sleeve 6 is the contact surface 61, the inner surface of the eccentric sleeve 6 is the driving surface, and the connection between the main shaft 4 and the eccentric sleeve 6 is a tapered fit.
[0041] The tapered engagement can improve the connection strength between the main shaft 4 and the eccentric sleeve 6. When the moving cone 8 is compressed by the support column 905 against the compression spring 906 in the centrifugal ring 7, the eccentric sleeve 6 needs to maintain a fixed position (longitudinally) so as not to detach from the main shaft 4. The contact surface 61 is pressed against the surface of the moving cone 8, which will push the moving cone 8 to swing continuously towards the center along the circumference. In order to increase the driving force, a larger contact surface is needed. However, a larger contact surface will result in a larger hard impact surface, and the moving cone 8 will react on the eccentric sleeve 6, thus affecting the normal rotation of the eccentric sleeve 6. At this time, the tapered engagement improves the relative movement of the eccentric sleeve 6 in the longitudinal direction and also improves the relative fixation of the eccentric sleeve 6 and the main shaft 4 in the circumferential direction, thereby reducing the impact of the reaction on the rotation of the eccentric sleeve 6 and the main shaft 4.
[0042] like Figure 6-7As shown, the limiting mechanism 11 includes an annular magnet 111, a magnet with the same pole 112, an annular groove 113, a positive magnet 114, a misalignment groove 115, and a fixed magnet 116. The annular magnet 111 is installed at the lower end of the moving cone 8. The magnet with the same pole 112 is installed inside the eccentric sleeve 6 and is directly opposite the annular magnet 111. The annular groove 113 is opened inside the moving cone 8. The positive magnet 114 is located inside the annular groove 113. The misalignment groove 115 is opened on the eccentric sleeve 6. The fixed magnet 116 is installed inside the misalignment groove 115.
[0043] As the moving cone 8 moves downward, the annular magnet 111 at the bottom of the moving cone 8 will approach the same pole magnet 112. The annular magnet 111 and the same pole magnet 112 have a certain repulsive force, which prevents the moving cone 8 from being pulled too far by the gravitational inertia caused by its descent, thus avoiding the problem of the moving cone 8 falling too far. The repulsive force between the annular magnet 111 and the same pole magnet 112 is negligible or will not affect its descent within its required descent height (the adsorption magnet 907 and the magnetic ball 909 also have some mutual attraction, which can neutralize the repulsive force between the annular magnet 111 and the same pole magnet 112, thereby reducing the up-and-down swaying of the compression spring 906 and improving stability).
[0044] At this time, the inner surface of the moving cone 8 and the contact surface 61 undergo longitudinal relative displacement. Initially, the positive magnet 114 in the annular groove 113 does not intersect with the fixed magnet 116 in the misalignment groove 115. However, after the moving cone 8 descends, the positive magnet 114 in the annular groove 113 corresponds to the fixed magnet 116 in the misalignment groove 115. The fixed magnet 116 generates a certain repulsive force on the positive magnet 114 in the annular groove 113. As the positive magnet 114 rotates, this repulsive force is transformed into a tangential force, thereby reducing the force that the moving cone 8 would resist on the eccentric sleeve 6 when the rotation speed is high. Affected by the repulsive force, the relative rotation of the two is smoother, and the oscillation of the moving cone 8 can be repelled. The force influences (as the eccentric sleeve 6 rotates, the eccentric sleeve 6 and the moving cone 8 will form two extreme positions, the minimum distance and the maximum distance. At the minimum distance, the repulsive force between the positive magnet 114 in the annular groove 113 and the fixed magnet 116 in the misalignment groove 115 is the greatest. As it moves from the minimum distance to the maximum distance, the repulsive force gradually decreases, and as it crosses the maximum distance, it gradually increases again). However, under the influence of high rotation speed, it will not affect the swing limit position of the moving cone 8, but it will reduce the mutual impact and mutual reaction force at the minimum distance, thereby reducing the impact of the load impact of the eccentric sleeve 6, extending the service life of the eccentric sleeve 6, and improving the efficiency of the crusher.
[0045] The moving cone 8 and the eccentric sleeve 6 are provided with through holes 81, and an oil pipe is installed in the through holes 81;
[0046] The through hole 81 is provided in the prior art for the circulation of cooling oil circuit. However, in the present invention, since the position of the moving cone 8 can change with the rotation speed, the position of the through hole 81 relative to the outer shell 1 will also change. Therefore, an oil pipe is provided to avoid leakage problems caused by position changes, and at the same time, it facilitates the circulation of internal oil circuits.
[0047] The magnetic ball 909 is non-fixed, and a slot 9081 is provided in the mounting cavity 908. The magnetic ball 909 is initially located near the center of the slot 9081.
[0048] At lower speeds, the centrifugal force on the magnetic ball 909 is small, and it will not move too far outward with the slot 9081. At this time, it does not need to do any work. However, when the speed increases, the magnetic ball 909 is subjected to centrifugal force and moves outward, which corresponds to the open adsorption magnet 907 above. This causes the moving cone 8 to descend further, and the corresponding position can improve a certain degree of stability.
[0049] The same-pole magnets 112 are arranged in a ring array. The magnetism of a single same-pole magnet 112 is enhanced along the rotation direction of the main axis 4, but the maximum period can only be 180°.
[0050] As the main shaft 4 rotates, there will be a magnetic difference between the same pole magnets 112. The same pole magnets 112 and the ring magnet 111 repel each other. By utilizing this magnetic difference, the oscillation effect of the moving cone 8 can be improved. That is, where the magnetism is strong, the corresponding opposite direction of magnetism is weak. At this time, the repulsive force between the same pole magnets 112 and the ring magnet 111 is large where the magnetism is strong, and small where the magnetism is weak. This allows the moving cone 8 to oscillate relative to each other, thereby improving the oscillation effect of the moving cone 8.
[0051] like Figure 8 As shown, the annular magnet 111 is divided into a strong magnetic part 1111 and a weak magnetic part 1112, and the strong magnetic part 1111 and the weak magnetic part 1112 are alternately distributed;
[0052] The strong magnetic part 1111 and the weak magnetic part 1112 are alternately distributed. When the strong magnetic part 1111 is strongly magnetized by the same pole magnet 112, the adjacent weak magnetic part 1112 will be appropriately lowered, thereby driving the moving cone 8 to swing to the lowest point, thus improving the swing effect of the moving cone 8.
[0053] The limiting block 903 is provided with a wedge-shaped surface 9031, and the limiting block 903 is symmetrical about the center of the main axis 4;
[0054] The wedge-shaped surface 9031 can drive the limiting block 903 to move towards the center during reset, and then gradually push the moving cone 8 upward under the action of the reset spring 904. The contact area 61 between the limiting block 903 and the centrifugal ring 7 is set according to specific requirements and actual production. However, the limiting block 903 needs to have a certain load-bearing capacity, so its contact area 61 with the centrifugal ring 7 needs to be increased to reduce the pressure during contact.
[0055] The longitudinal strength of the limiting block 903 is greater than the gravitational strength of the moving cone 8, and the surface of the moving cone 8 is provided with protrusions 82;
[0056] The limiting block 903 can support the moving cone 8. To consider extreme situations, the overall machine size can be set at this point. It is usually suitable for the interior of a portable hydraulic crusher. It can be used for emergency mineral processing and mineral sample collection. The protrusion 82 can improve the crushing effect between the moving cone 8 and the fixed cone 10, while preventing large-diameter materials from getting stuck between them.
[0057] During normal crushing, the operator adds material to the top of the outer shell 1, then drives the transmission mechanism 5 to rotate the main shaft 4. The main shaft 4 drives the eccentric sleeve 6 on the frame 3 to rotate. The contact surface 61 of the eccentric sleeve 6 gradually contacts different surfaces on the moving cone 8, thereby causing the moving cone 8 to swing. The relative distance between the moving cone 8 and the fixed cone 10 changes, thereby achieving the crushing and grinding effect.
[0058] When large-diameter materials need to be crushed and sampled, the rotation speed of the transmission mechanism 5 is increased, the speed of the main shaft 4 increases, and the crushing efficiency of the moving cone 8 and the fixed cone 10 is improved. As the speed of the main shaft 4 increases, the centrifugal force on the centrifugal block 902 in the slot 901 increases. At this time, the centrifugal block 902 will push the limiting block 903 to move outward. The limiting block 903 slides outward in the slot 901, thereby squeezing the return spring 904. When the centrifugal block 902 drives the limiting block 903 to move outward, the center of the moving cone 8 in the centrifugal ring 7 moves downward, thereby squeezing the compression spring 906. The compression spring 906 moves downward, and at this time, the upper surface of the moving cone 8... As the distance between the fixed cone 10 and the lower surface of the moving cone 8 increases, the magnetic magnet 907 below the moving cone 8 will attract the magnetic ball 909 in the mounting cavity 908, thereby driving the moving cone 8 to move downward. When the moving cone 8 moves downward, the ring magnet 111 at the bottom of the moving cone 8 will approach the same pole magnet 112. The ring magnet 111 and the same pole magnet 112 have a certain point repulsion force. The strong magnetic part 1111 and the weak magnetic part 1112 are alternately distributed. When the strong magnetic part 1111 corresponds to the same pole magnet 112, the adjacent weak magnetic part 1112 will be appropriately lowered, thereby driving the moving cone 8 to swing to the lowest point, thereby improving the swing effect of the moving cone 8.
[0059] After the moving cone 8 descends, the positive magnet 114 in the annular groove 113 corresponds to the fixed magnet 116 in the misaligned groove 115. The fixed magnet 116 generates a certain repulsive force on the positive magnet 114 in the annular groove 113. As the positive magnet 114 rotates, this repulsive force reduces the mutual collision and mutual reaction force at the minimum distance, thereby improving the crushing effect of large diameter.
[0060] When it is necessary to restore the crushing of small-diameter materials, the rotation speed is reduced. Under the action of the reset spring 904, the wedge-shaped surface 9031 of the limit block 903 is squeezed and pushed to move the support column 905 upward. At the same time, under the elastic compression of the compression spring 906, the distance between the moving cone 8 and the fixed cone 10 can be restored.
[0061] The foregoing has shown and described the basic principles and beneficial effects of the present invention. However, the present invention is not limited to the above embodiments. Various changes and modifications can be made to the present invention without departing from its effects and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.
Claims
1. An eccentric assembly for a multi-cylinder hydraulic cone crusher, characterized in that: The machine includes a housing (1), a hydraulic device (2), a frame (3), a main shaft (4), a transmission mechanism (5), an eccentric sleeve (6), a centrifugal ring (7), a moving cone (8), an adjusting mechanism (9), a fixed cone (10), and a limiting mechanism (11). The main shaft (4) is installed at the center of the frame (3). The transmission mechanism (5) passes through the housing (1). The eccentric sleeve (6) is connected to the transmission mechanism (5). The centrifugal ring (7) is installed above the main shaft (4). The moving cone (8) is installed on... Outside the centrifugal ring (7), the adjustment mechanism (9) is installed between the moving cone (8) and the centrifugal ring (7), the fixed cone (10) is installed on the outer shell (1), and the fixed cone (10) is located above the moving cone (8). The limiting mechanism (11) is installed between the moving cone (8) and the eccentric sleeve (6). When the rotation speed increases, the centrifugal ring (7) drives the moving cone (8) to move down through the adjustment mechanism (9). When the moving cone (8) moves down, the limiting mechanism (11) adjusts the distance between the moving cone (8) and the eccentric sleeve (6). The adjustment mechanism (9) includes a slot (901), a centrifugal block (902), a limiting block (903), a return spring (904), a support column (905), a compression spring (906), an adsorption magnet (907), a mounting cavity (908), and a magnetic ball (909). The slot (901) is arranged in a circumferential array around the centrifugal ring (7). The centrifugal block (902) is slidably installed in the slot (901). The limiting block (903) is installed on the centrifugal ring (7) and corresponds to the centrifugal block (902). At this location, the reset spring (904) is installed between the limit block (903) and the eccentric sleeve (6), the support column (905) is installed above the main shaft (4), the support column (905) is connected to the moving cone (8), the compression spring (906) is installed between the support column (905) and the moving cone (8), the adsorption magnet (907) is installed below the support column (905), the mounting cavity (908) is opened above the eccentric sleeve (6), and the magnetic ball (909) is installed in the mounting cavity (908); The outer surface of the eccentric sleeve (6) is the contact surface (61), and the connection between the main shaft (4) and the eccentric sleeve (6) is a tapered fit. The limiting mechanism (11) includes an annular magnet (111), a co-pole magnet (112), an annular groove (113), a positive pole magnet (114), a misalignment groove (115), and a fixed magnet (116). The annular magnet (111) is installed at the lower end of the moving cone (8). The co-pole magnet (112) is installed in the eccentric sleeve (6) and is directly opposite the annular magnet (111). The annular groove (113) is opened on the inner side of the moving cone (8). The positive pole magnet (114) is located in the annular groove (113). The misalignment groove (115) is opened on the eccentric sleeve (6). The fixed magnet (116) is installed in the misalignment groove (115). The moving cone (8) and the eccentric sleeve (6) are provided with through holes (81), and an oil pipe is installed in the through holes (81); The magnetic ball (909) is non-fixed and installed. A slot (9081) is provided in the mounting cavity (908). The magnetic ball (909) is initially located near the center of the slot (9081). The same-pole magnets (112) are arranged in a ring array, and the magnetism of a single same-pole magnet (112) is enhanced along the rotation direction of the main axis (4); The ring magnet (111) is divided into a strong magnetic part (1111) and a weak magnetic part (1112), and the strong magnetic part (1111) and the weak magnetic part (1112) are distributed alternately.
2. The eccentric assembly of a multi-cylinder hydraulic cone crusher according to claim 1, characterized in that: The limiting block (903) is provided with a wedge-shaped surface (9031), and the limiting block (903) is symmetrical about the main axis (4).
3. The eccentric assembly of a multi-cylinder hydraulic cone crusher according to claim 1, characterized in that: The longitudinal strength of the limiting block (903) is greater than the gravitational strength of the moving cone (8), and the surface of the moving cone (8) is provided with protrusions (82).