Impact crusher and upper rotor assembly
By adopting a sandwich structure and hinged joint connection for the upper rotor assembly in the impact crusher, the maintenance difficulties caused by the weight of the upper rotor assembly are solved, enabling a safer and faster maintenance process and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- MAICON ENG OY
- Filing Date
- 2021-10-26
- Publication Date
- 2026-06-26
AI Technical Summary
The heavy weight of the upper rotor assembly of existing impact crushers makes maintenance difficult, time-consuming, and dangerous, thus affecting production efficiency.
Design an upper rotor assembly with a sandwich structure that can be tilted to a maintenance position for easy access and maintenance. The upper and lower rotors are connected by a hinged joint, which allows the upper rotor to tilt between the crushing position and the maintenance position, simplifying the maintenance process.
This results in a lighter and more durable upper rotor assembly, safer and faster maintenance, reduced downtime and maintenance difficulty, and improved production efficiency.
Smart Images
Figure CN116887924B_ABST
Abstract
Description
Background Technology
[0001] This disclosure relates to crushers, and more particularly to impact crushers with rotating hammers. Vertical shaft impact (VSI) crushers can be used to crush materials such as rock, ore, and steel slag for separating metals and slag or various recyclable materials. One example of an impact crusher includes a dual-rotor system. The material to be crushed is fed through a hollow vertical shaft leading to the central portion of the lower rotor. The lower rotor rotates and centrifugally accelerates the material to be discharged at high speed through the lower rotor opening. The lower rotor may include a first hammer at its tip. One example of a VSI crusher includes multiple fixed anvils at the outer periphery of the crusher, towards which the accelerated material is thrown.
[0002] In a dual-rotor assembly, the upper rotor rotates in the opposite direction about the same axis as the lower rotor. The upper rotor includes hammers extending downwards to receive accelerated material from the lower rotor. The hammers, or fixed anvils, face the material being discharged at high speed from the lower rotor, providing a secondary impact and further crushing the material.
[0003] The upper rotor can be between 1 meter and 3 meters in size. Each hammer can weigh between 10 kg and 100 kg, and the upper rotor can rotate at speeds up to 1000 rpm. The upper rotor assembly must withstand the forces from the heavy impact hammers and the centrifugal forces pulling the hammers. For these reasons, the upper rotor assembly can be heavy for durability.
[0004] Crushers have many wearing parts that require regular maintenance or replacement. The heavy upper rotor assembly can make maintenance procedures difficult. Time-consuming maintenance increases process downtime. Difficult maintenance repairs can be dangerous for maintenance personnel.
[0005] An example of a twin-rotor crusher is disclosed in WO2019 / 141906. Summary of the Invention
[0006] This synopsis is provided to introduce, in a simplified form, a series of concepts further described below in the detailed description. This synopsis is not intended to identify key or essential features of the claimed subject matter, nor is it intended to limit the scope of the claimed subject matter. Furthermore, the claimed subject matter is not limited to specific implementations that address any or all the shortcomings mentioned in any part of this disclosure.
[0007] The following discloses an impact crusher with dual rotors and an upper rotor assembly for the impact crusher. The upper rotor assembly is configured to be tilted into a maintenance position, thus allowing easy access for maintenance.
[0008] The upper rotor assembly is structured to allow it to be tilted into a maintenance position. The upper rotor of the impact crusher comprises two discs positioned on top of each other. The upper rotor includes multiple hammers pointing downwards towards the outer periphery of the lower rotor, configured to receive accelerated material from the lower rotor to be crushed at high speed. Each hammer has a support shaft extending vertically between the first and second discs.
[0009] The distance between the first and second disks increases the structural rigidity of the connection between the hammer and the upper rotor. With only a single connection between the support shaft and the upper rotor, this single connection point easily withstands the centrifugal force generated by the heavy hammer at the end of the support shaft. In contrast, the materials used for the first and second disks can be lighter, yet the structure is more durable. The first and second disks form a sandwich structure for the upper rotor.
[0010] Because the upper rotor assembly is lighter and more durable, it is easier to move. In one embodiment, the upper rotor assembly can be tilted to a maintenance position, opening the crusher structure by separating the upper rotor from the lower rotor. The maintenance position is tilted between 90 and 180 degrees relative to the maintenance location. The maintenance position can be either 90 or 180 degrees, in which the upper rotor assembly can be locked into the maintenance position. This makes maintenance procedures easier, such as replacing worn parts of the hammers. Each hammer assembly can weigh between 30 kg and 100 kg, making manual handling cumbersome. For example, in the 180-degree maintenance position, the replacement of the upper rotor wear plate and worn hammer parts is convenient, quick, and safe. Disassembly and reinstallation of the entire upper rotor is also easier, faster, and safer in this position. In an arrangement with a 90-degree maintenance position, worn parts can be inserted laterally, reducing the risk of parts falling inside the upper rotor assembly.
[0011] Many of the accompanying features will be more readily understood as they become better understood through the following detailed description, taken in conjunction with the accompanying drawings. The embodiments described below are not limited to specific implementations that address any or all of the known drawbacks of crushers. Attached Figure Description
[0012] This description will be better understood by reading the following detailed embodiments with reference to the accompanying drawings, wherein...
[0013] Figure 1 A cross-sectional view of an exemplary embodiment of an impact crusher is schematically shown;
[0014] Figure 2 An isometric view of an exemplary embodiment of the lower rotor is shown;
[0015] Figure 3 An isometric sectional view of an exemplary embodiment of the upper rotor is shown;
[0016] Figure 4aAn isometric view from above is shown of the same embodiment of the upper rotor;
[0017] Figure 4b An isometric view from above is shown of the same embodiment of the upper rotor;
[0018] Figure 5 An isometric view of an exemplary embodiment in a broken location is shown;
[0019] Figure 6 An isometric view of an exemplary embodiment in a 90° maintenance position is shown;
[0020] Figure 7 An isometric view of an exemplary embodiment in a 180° maintenance position is shown;
[0021] Figure 8 A cross-sectional view of an exemplary embodiment of the hammer assembly is shown;
[0022] Figure 9 An exploded view of the same embodiment of the hammer assembly is shown; and
[0023] Figure 10 An exploded view of an exemplary embodiment of the upper rotor is shown.
[0024] Similar reference numerals are used to indicate similar parts in the figures. Detailed Implementation
[0025] The specific embodiments described below with reference to the accompanying drawings are intended to illustrate this example and are not intended to represent the only form for constructing or utilizing this example. However, the same or equivalent functions and sequences can be implemented by different instances.
[0026] Although the examples described and shown herein are implemented in a metal slag crusher, they are provided as examples and not as limitations. As those skilled in the art will understand, these examples are suitable for application in a variety of different types of crushers. In this disclosure, directions such as upward, downward, below, or above refer to the impact crusher being in the operating position, i.e., the crushing position.
[0027] Figure 1 An exemplary embodiment of an impact crusher with a dual-rotor assembly is schematically illustrated. The material 1a to be crushed flows through a hopper 11 and is received by a vertical shaft 10. Non-limiting examples of material 1a are slag, rock, and solid recyclable materials. The vertical shaft 10 is arranged to pass through an upper rotor 30 along its axis of rotation 12. Material 1a flows through the upper rotor 30 via the vertical shaft 10.
[0028] The lower rotor 20 rotates about the same axis 12 as the upper rotor 30. In this embodiment, the lower rotor 20 and the upper rotor 30 are not physically connected to the same axis 12, so their respective axes of rotation 12 may be slightly off. The upper rotor 30 rotates via an upper motor, and the lower rotor 20 rotates via a lower motor. The lower rotor 20 rotates in the opposite direction to the upper rotor 30. The lower rotor 20 is configured to receive material 1a to be crushed from the vertical axis 10. The lower rotor 20, rotating in a first direction, accelerates the flow of material 1b. In an exemplary embodiment, the material is accelerated to a speed of 60 m / s to 80 m / s. As the material 1a falls through the vertical axis 10 onto the enclosed lower rotor 20, centrifugal force throws the material 1b toward the abrasion tip 21 constructed onto the lower rotor 20.
[0029] Material 1b is discharged from the lower rotor 20 into a plurality of hammers 40. The hammers 40 extend downwards from the upper rotor 30 to the horizontal level of the outer periphery of the lower rotor, and / or to a location receiving the material flow discharged from the lower rotor 20. The upper rotor 30 and the hammers 40 rotate in a second direction, thereby amplifying the impact of material 1b on the hammers 40. After the impact, material 1c falls from the hammers 40 to be collected outside the impact crusher.
[0030] The upper rotor 30 comprises a sandwich structure with two disks 31, 32 spaced apart from each other. Each hammer 40 includes a wear part 42 and a support shaft 41. The wear part 42 hammers the material 1b. The support shaft 41 connects the wear part 42 to the upper rotor 30. The support shaft 41 is connected from a lower position to the first disk 31. A second disk 32 is located above the first disk 31, and the support shaft 41 is connected from an upper position to the second disk 32. In an exemplary embodiment, a single hammer 40 weighs 40 kg and rotates at 1000 rpm with a radius of 1200 mm. Having two vertical support positions allows the hammers 40 and the upper rotor 30 to rotate without deformation under harsh conditions of crushing heavy and solid particles. The exemplary embodiment is constructed for steel slag with a particle size of 0 mm to 30 mm and other materials with a particle size up to 50 mm. An exemplary material handling capacity is 300 tons per hour.
[0031] Figure 2An isometric view of an exemplary embodiment of the lower rotor 20 is shown. The lower rotor 20 is configured to receive a flow of material 1a via an opening 21 that opens upward toward the hollow portion of the vertical axis 10. According to this embodiment, the lower rotor 20 includes three wings 22 leading to a discharge opening 23. The opening angle can be between 50° and 70°. The diameter of the lower rotor 20 can be between 700 mm and 1400 mm. The structure of the lower rotor 20 includes a closed top portion of the wings 22. The wings 22 guide the flow of material 1a to the wide discharge opening 23, which prevents material 1b from accumulating or agglomerating into tight spots or corners. Before exiting through the discharge opening 23, material 1b can be discharged through a wear tip. In one embodiment, the wear tip is replaceable. In one embodiment, the wear tip impacts the material 1b.
[0032] Figure 3 An isometric sectional view of an exemplary embodiment of the upper rotor 30 is shown. Figure 4a An isometric view of the same upper rotor 30 from above is shown, and Figure 4b An isometric view from below is shown. According to the sandwich structure of the upper rotor 30, the support shaft 41 of the hammer 40 is connected to the first disk 31 and to the second disk 32. The first disk 31 and the second disk 32 are above the lower rotor 20. The first disk 31 extends to the vertical shaft 10 when fully assembled. The second disk 32 extends to the vertical shaft 10 when fully assembled. The first disk 31 and / or the second disk 32 may be assembled from multiple components (such as sectors). The second rotor 30 may include additional support structures, such as a frame supporting the first disk 31 and / or the second disk 32. The distance between the first disk 31 and / or the second disk 32 provides two connection points to the support shaft, enabling structural integrity to withstand centrifugal forces and impacts when crushing material 1b.
[0033] In an alternative embodiment, the first disk 31 is connected to the bottom portion of the support shaft 41. In one embodiment, the first disk 31 is a hoop or rim connected only to the continuous support shaft 41. The plurality of hammers 40 are connected toward the axis 12 only via the second disk 32. The first disk 31 may be positioned at the level of the lower rotor 20, supporting the support shaft 41 from below. The first disk 31 is arranged as a hoop configured to resist centrifugal force and hold the hammers 40 in place when the upper rotor 30 rotates.
[0034] In an alternative embodiment, the distance between the first disk 31 and the second disk 32 is designed to be small because the plurality of hammers 40 are interconnected with hoops or rims from the bottom portion of the hammers 40. In this embodiment, the hoops are additional components that may be positioned at the level of the lower rotor 20 to support the support shaft 41 from below.
[0035] In one exemplary embodiment, the upper rotor 30 includes a plurality of vertical impact bushings 45 between a first disk 31 and a second disk 32. The impact bushings 45 are configured to receive a support shaft 41 of a hammer 40. The impact bushings 45 can increase the structural integrity of the upper rotor 30. In one exemplary embodiment, the support shaft 41 is configured to push through the second disk 32 toward the first disk 31. The support shaft 31 can travel within the impact bushings. The impact bushings 45 can alleviate structural stress.
[0036] The upper rotor 30 is lighter in structure compared to a flat upper rotor 30 without a sandwich structure. In one exemplary embodiment, the upper rotor 30 and the upper rotor assembly 50 are tilted between a breakage position and a maintenance position. Figure 5 An exemplary embodiment of the upper rotor assembly 50 in the crushing position is shown, at which point it is lowered onto the lower rotor 20 and the hammer 40 enters the enclosed crushing chamber. This embodiment discloses a maintenance port through which the support shaft 41 can be inspected and / or replaced.
[0037] The upper rotor assembly 50 includes a frame for the upper rotor 30 and devices for connecting the upper rotor assembly to the lower rotor assembly. Figure 6 An exemplary embodiment is shown, in which the frame has a 90° tilted service position within the upper rotor assembly 50. The upper rotor assembly 50 is tilted along a wide-angle joint 62 via an arm 60 and a hydraulic cylinder 61. The wide-angle joint 62 is configured to allow the upper rotor assembly 50 and the upper rotor 30 to be hinged between a breakage position and a service position. The wide-angle joint 62 is an example of a hinged joint. Alternatively or additionally, the hinged joint may include a hinge. The hinged joint allows the upper rotor assembly 50 to be raised from the lower rotor assembly and / or tilted to the service position, thereby enabling selected components of the dual rotor assembly to be serviced.
[0038] In one embodiment, the upper rotor 30 includes a bearing assembly configured to support rotatable portions of the upper rotor 30 in various positions: a breakage position and a selected maintenance position. These examples are not limited in terms of tilt angle, as various angles of the maintenance position are possible depending on the maintenance task. The hammer 40 is placed horizontally during this maintenance. According to one example, this maintenance position may facilitate balancing the upper rotor 30 or tightening bolts on either side of the upper rotor 30.
[0039] Figure 7 An isometric view of an exemplary embodiment of the upper rotor assembly 50 in a 180° maintenance position is shown. The hammers 40 can weigh from 10 kg to 100 kg. They can be removed or installed via a first disc 31 and secured with bolts tightened via a second disc 32 located below the upper rotor 30 in this maintenance position. Alternatively, the hammers 40 can be removed or installed via the second disc 32.
[0040] In one embodiment, the maintenance position is tilted 90 degrees relative to the breakage position. In one embodiment, the maintenance position is tilted 180 degrees relative to the breakage position. In one embodiment, the maintenance position can be any position between 90 degrees and 180 degrees. In one embodiment, the maintenance position is locked between 90 degrees and 180 degrees by a locking device. In one embodiment, the maintenance position is a position between 90 degrees and 180 degrees. In one embodiment, the maintenance position is a position between 45 degrees and 180 degrees. In one embodiment, the maintenance position is 180 degrees, a flat angle, or substantially a flat angle. In one embodiment, the maintenance position is a position between 160 degrees and 200 degrees. In one embodiment, the wide-angle connector 62 is configured to limit the angle of the maintenance position. In one embodiment, the wide-angle connector 62 is lockable to the maintenance position by a locking device.
[0041] Figure 8 A cross-sectional view of an exemplary embodiment of a hammer 40 assembled into an upper rotor 30 is shown. Figure 9 An exploded view of the same embodiment of the hammer assembly is shown. The upper rotor 30 includes a plurality of profiled openings configured to receive a plurality of support shafts 41. In one embodiment, the support shafts 41 are constructed of steel bars. The steel bars may be cut and machined to shape the support shafts 41. The support shafts 41 include profiles to match the profiled openings. When the hammer 40 is mounted, the orientation or direction of the wear parts 42 is defined by the shape of the openings and the support shafts 41. In one exemplary embodiment, the profiled openings are arranged onto the inner surface of the impact bushing 45. The combination of the profiled openings, the impact bushing 45, and the shaped support shafts 41 provides the upper rotor 30 with increased rigidity while being lightweight and easy to manufacture.
[0042] In one embodiment, the wear part 42 is replaceable. In one embodiment, the wear part 42 facing downward rotor 20 is reversibly connected to support shaft 41. The discharge of material 1b may be uneven, and most impacts may end in the lower portion of the wear part. In one embodiment, the wear part 42 is non-reversible. In one embodiment, support shaft 41 includes at least one vertical groove configured to receive at least one lip of the wear part 42, wherein the groove is configured to laterally hold the wear part 42 in place. The wear part 42 is horizontally locked in place by a collar 43. When the wear part 42 is installed, it slides into an end position along the vertical groove or contacts the first disk 31. The collar 43 slides into a matching slot or other corresponding form constructed in the wear part 42 according to a horizontal groove 44 constructed on the support shaft 41. The collar 43 can be bolted to the support shaft 41. When the wear part 42 is reversed, the collar 43 is removed, and the wear part 42 slides out of the groove. The wear part can be inverted and installed back into the support shaft 41. Alternatively or additionally, the worn part 42 can be connected to the support shaft by connecting bolts.
[0043] Tighten the support shaft 41 from the side of the second disc 32 using washers and a single bolt. The actual installation orientation may vary depending on the service location. The hammer assembly is easy and quick to service.
[0044] Figure 10 An exploded view of an exemplary embodiment of the upper rotor 30 is shown. A central part 46 is configured to connect to a vertical shaft 10. In one embodiment, the central part 46 and the vertical shaft 10 are configured to include a form-locking connection. The inner surface of the central part 46 is not perfectly cylindrical, while the outer surface of the vertical shaft 10 has a matching shape. The form-locking connection improves the connection and bears at least a portion of the stress from the connecting bolts between the central part 46 and the vertical shaft 10. Between the first ring 31 and the second ring 32 are a plurality of radial flanges 47 configured to stiffen the upper rotor 30. The radial flanges 45 may be located between each impact bushing 45 or between several impact bushings 45. Figure 8 As shown, the impact bushing 45 is arranged between the first disk 31 and the second disk 32. The outer ring 48 covers the inner structure of the upper rotor 30.
[0045] This document discloses an impact crusher. The impact crusher includes: a vertical shaft configured to receive a flow of material to be crushed; a lower rotor having a vertical axis configured to receive material from the vertical shaft and rotate about the vertical axis in a first direction to accelerate the material flow; an upper rotor configured to rotate above the lower rotor about the same vertical axis in a second direction; the upper rotor including a plurality of hammers extending downward to rotate at the level of the accelerated material flow. An upper rotor assembly includes the upper rotor; and the upper rotor assembly is connected via a hinged joint to a lower rotor assembly including the lower rotor; wherein the upper rotor assembly is configured to tilt along the hinged joint into a service position. In one embodiment, the upper rotor assembly is configured to tilt relative to the crushing position into a service position between 90 degrees and 180 degrees. In one embodiment, the upper rotor assembly is configured to tilt into a service position at a substantially flat angle. In one embodiment, the hinged joint includes a wide-angle joint and the upper rotor assembly is tilted along the wide-angle joint by an arm and a hydraulic cylinder. In one embodiment, the upper rotor includes: a first disc; a plurality of hammers including wear parts and support shafts, wherein the support shafts are connected to the first disc from a lower position; and a second disc located at a distance above the first disc, wherein the support shafts are connected to the second disc from an upper position. In one embodiment, the support shafts of the hammers are configured to push toward the first disc through the second disc. In one embodiment, the upper rotor includes a plurality of impact bushings between the first and second discs, the plurality of impact bushings being configured to receive the support shafts of the hammers. In one embodiment, the upper rotor includes a plurality of profiled openings configured to receive the plurality of support shafts, wherein the support shafts include profiles for matching the profiled openings. In one embodiment, the impact crusher includes a plurality of radial flanges between the first and second discs. In one embodiment, the support shaft includes at least one vertical groove configured to receive at least one lip of the wear part, wherein the groove is configured to laterally hold the wear part in place; and wherein the wear part is horizontally locked in place by a collar. In one embodiment,
[0046] Alternatively or additionally, this document discloses an upper rotor assembly for an impact crusher. The upper rotor includes an upper rotor; a vertical shaft configured to receive a flow of material to be crushed; wherein the upper rotor is configured to rotate above a lower rotor; and includes a plurality of hammers extending downward to rotate at the level of the accelerated material flow discharged from the lower rotor. A hinged joint is configured to connect the upper rotor assembly to the lower rotor assembly; wherein the upper rotor assembly is configured to tilt along the hinged joint into a service position. In one embodiment, the upper rotor assembly is configured to tilt relative to a crushing position into a service position between 90 degrees and 180 degrees. In one embodiment, the upper rotor assembly is configured to tilt into a service position at a substantially flat angle. In one embodiment, the upper rotor assembly is tilted along a wide-angle joint by an arm and a hydraulic cylinder. In one embodiment, the upper rotor includes: a first disc; a plurality of hammers including wear parts and support shafts, wherein the support shafts are connected from a lower position to the first disc; and a second disc located at a distance above the first disc, wherein the support shafts are connected from an upper position to the second disc. In one embodiment, the support shafts of the hammers are configured to push through the second disc toward the first disc. In one embodiment, the upper rotor includes: a plurality of impact bushings between a first disk and a second disk, the plurality of impact bushings being configured to receive a support shaft of a hammer; and a plurality of radial flanges between the first disk and the second disk. In one embodiment, the upper rotor includes a plurality of profile-shaped openings configured to receive the plurality of support shafts, wherein the support shafts include profile shapes for matching the profile-shaped openings.
[0047] Any ranges or device values given in this article can be extended or modified without losing the desired effect.
[0048] Although at least a portion of the subject matter has been described in language specific to structural features and / or actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are disclosed as examples of implementing the claims, and other equivalent features and actions are intended to fall within the scope of the claims.
[0049] It should be understood that the benefits and advantages described above may relate to one embodiment or several embodiments. The embodiments are not limited to those that solve any or all of the stated problems or those that have any or all of the stated benefits and advantages. It should be further understood that a reference to "one" means one or more of these items.
[0050] The term “comprising” is used herein to mean including the identified element, but such blocks or elements do not include an exclusive list and the apparatus may include additional blocks or elements.
[0051] It should be understood that the above description is given by way of example only, and various modifications can be made by those skilled in the art. The above description, examples, and data provide a complete description of the structure and use of exemplary embodiments. Although various embodiments have been described above with a degree of specificity or by reference to one or more individual embodiments, those skilled in the art can make numerous modifications to the disclosed embodiments without departing from the spirit or scope of this specification.
Claims
1. An impact crusher, the impact crusher comprising: A vertical axis (10) is configured to receive a flow of material (1a) to be broken; A lower rotor (20) having a vertical axis (12) configured to receive the material (1a) from the vertical axis (10) and rotate about the vertical axis (12) in a first direction to accelerate the flow of material (1b); The upper rotor (30) is configured to rotate in a second direction above the lower rotor (20) about the same vertical axis (12); The upper rotor (30), comprising a plurality of hammers (40) extending downward to rotate at the level of the accelerated material (1b) flow, is characterized in that the impact crusher further comprises: Upper rotor assembly (50), which includes the upper rotor (30); and The upper rotor assembly (50) is connected to the lower rotor assembly including the lower rotor (20) via a hinge joint; The upper rotor assembly (50) is configured to tilt along the hinge joint into a maintenance position; The upper rotor (30) includes First disk (31); The plurality of hammers (40) include a wear part (42) and a support shaft (41), wherein the support shaft (41) is connected from a lower position to the first disk (31); and A second disk (32) is located at a certain distance above the first disk (31), wherein the support shaft (41) is connected to the second disk (32) from the upper position.
2. The impact crusher according to claim 1, characterized in that, The articulated joint includes a wide-angle joint (62), and the upper rotor assembly (50) is tilted along the wide-angle joint (62) by means of an arm (60) and a hydraulic cylinder (61).
3. The impact crusher according to claim 1 or claim 2, characterized in that, The repair position is tilted between 90 and 180 degrees relative to the breakage position.
4. The impact crusher according to claim 1, characterized in that, The maintenance position is tilted to a substantially flat angle.
5. The impact crusher according to claim 1, characterized in that, The support shaft (41) of the hammer (40) is configured to pass through the second disk (32) and push toward the first disk (31).
6. The impact crusher according to claim 1, characterized in that, The upper rotor (30) includes a plurality of impact bushings (45) between the first disk (31) and the second disk (32), the plurality of impact bushings being configured to receive the support shaft (41) of the hammer (40).
7. The impact crusher according to claim 1, characterized in that, The upper rotor (30) includes a plurality of profile-shaped openings configured to receive a plurality of support shafts (41), wherein the support shafts (41) include profile shapes for matching the profile-shaped openings.
8. The impact crusher according to claim 1, characterized in that... Includes a plurality of radial flanges (47) between the first disk (31) and the second disk (32).
9. The impact crusher according to claim 1, characterized in that, The support shaft (41) includes at least one vertical groove configured to receive at least one lip of the wear part (42), wherein the groove is configured to laterally hold the wear part (42) in place; and wherein the wear part (42) is horizontally locked in place by a collar (43).
10. An upper rotor assembly for an impact crusher, the upper rotor assembly comprising: Upper rotor (30); A vertical axis (10) is configured to receive a flow of material (1a) to be broken; The upper rotor (30) is configured to rotate above the lower rotor (20); and The device comprises a plurality of hammers (40) extending downward to rotate at the level of the accelerated material (1b) flow discharged from the lower rotor (20), and is characterized by further comprising: First disk (31); The plurality of hammers (40) include a wear part (42) and a support shaft (41), wherein the support shaft (41) is connected from a lower position to the first disk (31); and A second disk (32) is located at a certain distance above the first disk (31), wherein the support shaft (41) is connected to the second disk (32) from the upper position; A hinged joint configured to connect the upper rotor assembly (50) to the lower rotor assembly; The upper rotor assembly (50) is configured to tilt along the hinge joint into a maintenance position.
11. The upper rotor assembly according to claim 10, characterized in that, The repair position is between 90 degrees and 180 degrees relative to the breakage position.
12. The upper rotor assembly according to claim 10, characterized in that, The repair location is essentially at a flat angle.
13. The upper rotor assembly according to claim 10, characterized in that, The upper rotor assembly (50) is tilted along the wide-angle joint (62) via the arm (60) and the hydraulic cylinder (61).
14. The upper rotor assembly according to claim 10, characterized in that, The support shaft (41) of the hammer (40) is configured to pass through the second disk (32) and push toward the first disk (31).
15. The upper rotor assembly according to claim 10, characterized in that... include: A plurality of impact bushings (45) between the first disk (31) and the second disk (32), the plurality of impact bushings being configured to receive the support shaft (41) of the hammer (40); and a plurality of radial flanges (47) between the first disk (31) and the second disk (32).
16. The upper rotor assembly according to claim 10, characterized in that... It includes a plurality of profile-shaped openings configured to receive a plurality of support shafts (41), wherein the support shafts (41) include profile shapes for matching the profile-shaped openings.