Hydraulic spring type roll crusher and crushing roll shaft thereof

Abstract

The utility model relates to a hydraulic spring type roll crusher and a crushing roll shaft thereof. A crushing roll shaft comprises a main shaft, a fixed gland and a movable gland assembly which are circumferentially positioned and installed on the main shaft, and rolling rings arranged on the circumferential outer sides of the fixed gland and the movable gland assembly. The movable gland assembly comprises a flange seat and a movable gland, the flange seat is circumferentially positioned on the main shaft and is separated from the fixed gland through a spacer sleeve, and a locking part is connected to the main shaft on the outer side of the flange seat and is used for axially locking the flange seat and the fixed gland; the movable gland is fixedly connected to the flange base through a connecting assembly. The inner annular faces of the two sides of the rolling ring are fastened to the outer annular faces of the fixed gland and the movable gland respectively. According to the scheme, the problem that an existing crushing roller shaft is difficult to replace is solved, replacement can be facilitated during assembly and disassembly, the replacement speed is greatly increased, operation does not need to be conducted on other sites, the replacement efficiency can be improved, and the influence on production is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of mining machinery and equipment, and in particular to a hydraulic spring-type double roll crusher and its crushing roll shaft. Background Art

[0002] A roller crusher is a machine that uses two counter-rotating rollers to crush materials, primarily used for crushing stone and making sand. Its main components include rollers, a motor, a frame, and flexible connectors. During operation, material enters the crushing gap (crushing chamber) between the two crushing rollers, and the rollers rotate under the drive of the motor, thus completing the crushing process. Different technologies and structural designs have a significant impact on the performance of roller crushers; improving technologies and optimizing structural designs are crucial for enhancing equipment performance.

[0003] The current roller crusher's crushing roller shaft is cumbersome to assemble and disassemble, requiring a large press for disassembly and assembly, which is time-consuming and labor-intensive. Main shaft replacement must be carried out elsewhere, affecting production and incurring high replacement costs. Due to the inconvenience of disassembling and assembling the crushing roller shaft caused by the above problems, further research is needed on the existing sand crusher main shaft to provide a new crushing roller shaft that is easy to replace. Summary of the Invention

[0004] To address the aforementioned problems, the primary objective of this invention is to provide a hydraulic spring-type double-roll crusher and its crushing roller shaft. This solution resolves the current difficulty in replacing the crushing roller shaft, facilitating replacement during assembly and disassembly, significantly increasing replacement speed, and eliminating the need for operation in other locations, thereby improving replacement efficiency and effectively reducing the impact on production.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A crushing roller shaft includes a main shaft, a fixed pressure plate and a movable pressure plate assembly circumferentially positioned and mounted on the main shaft, and a rolling ring disposed circumferentially outside the fixed pressure plate and the movable pressure plate assembly; characterized in that: the movable pressure plate assembly includes a flange seat and a movable pressure plate, the flange seat is circumferentially positioned on the main shaft and separated from the fixed pressure plate by a spacer sleeve, a locking component is connected to the main shaft outside the flange seat for axially locking the flange seat and the fixed pressure plate; the movable pressure plate is fixedly connected to the flange seat by a connecting component; the inner annular surfaces on both sides of the rolling ring are respectively fastened to the outer annular surfaces of the fixed pressure plate and the movable pressure plate.

[0007] This utility model adopts the above-mentioned technical solution, which relates to a crushing roller shaft. The rolling ring in this crushing roller shaft is positioned on the main shaft by a fixed pressure cap and a movable pressure cap assembly, thereby forming a complete crushing roller shaft and achieving synchronous rotation. In a specific embodiment, the movable pressure cap assembly includes a flange seat and a movable pressure cap. During installation, the flange seat and the fixed pressure cap are first positioned on the main shaft and separated by a spacer sleeve, and then axially locked by a locking component. The movable pressure cap is then fixed to the flange seat by a connecting component. Finally, the inner annular surfaces on both sides of the rolling ring are respectively fastened to the outer annular surfaces of the fixed pressure cap and the movable pressure cap, thus completing the installation.

[0008] When maintaining or replacing the crushing roller shaft, the roller can be removed simply by disassembling the connecting assembly and taking off the movable pressure cap. This solution solves the current problem of difficult roller shaft replacement, facilitating replacement during assembly and disassembly, significantly increasing replacement speed, and eliminating the need for operations in other locations, thus improving replacement efficiency and effectively reducing the impact on production.

[0009] In a further embodiment, when the locking component presses against the flange seat, the end face of the fixed cover away from the flange seat presses against the spindle. Specifically, the spindle has a positioning step, and the end face of the fixed cover away from the flange seat abuts against this positioning step. In this embodiment, the positioning step on the spindle defines the installation position of the fixed cover. When the locking component axially locks, the flange seat, spacer, and fixed cover are sequentially pressed, with the fixed cover pressed against the positioning step on the spindle, achieving axial locking and positioning.

[0010] Preferably, the locking component is constructed as a locking nut threaded onto the spindle for easy assembly and disassembly.

[0011] Preferably, keyways are constructed on the outer shaft surface of the main shaft, the inner shaft surface of the fixed cover, and the inner shaft surface of the flange seat, with pins embedded in the grooves; the fixed cover and the flange seat are circumferentially positioned with the main shaft by the pins, thus realizing circumferential linkage between the fixed cover, the flange seat and the main shaft.

[0012] Preferably, both the fixed and movable glands are constructed as frustoconical shapes with a smaller inner diameter and a larger outer diameter, such that the outer axial surfaces of both the fixed and movable glands are constructed as first inclined surfaces that gradually slope upwards from the inside out. The inner annular surfaces on both sides of the rolling ring are constructed as second inclined surfaces that adapt to the first inclined surfaces. The inner annular surfaces on both sides of the rolling ring are respectively adapted to and abut against the inclined surfaces of the outer axial surfaces of the fixed and movable glands. In this embodiment, the intermediate region between the fixed and movable gland assemblies is referred to as the inner side. Therefore, the above embodiment defines the outer axial surfaces of both the fixed and movable glands as first inclined surfaces that gradually slope upwards from the inside out. Since the fixed and movable glands are located on opposite sides, the inclined surfaces of the outer axial surfaces of the fixed and movable glands face opposite directions. Then, the inner annular surfaces on both sides of the rolling ring are tightly fitted with the outer axial surface of the fixed cover and the outer axial surface of the movable cover by means of inclined surface adaptation. The inclined surface fit on both sides can achieve axial and radial positioning at the same time. After tight fit, circumferential positioning can also be achieved. In this way, the rolling ring can be positioned and installed.

[0013] During disassembly, removing the movable pressure cap releases the axial, radial, and circumferential positioning of the rolling ring, enabling quick assembly and disassembly and improving efficiency.

[0014] In a specific implementation, the flange seat includes a main body and a flange ring. The flange ring is located on one side of the main body and extends radially outward relative to the main body. During installation, the movable gland is first fitted onto the main body of the flange seat, and the connecting assembly fixes the movable gland to the flange ring of the flange seat, thus enabling quick alignment and assembly.

[0015] Preferably, the connecting assembly includes a connecting screw passing through the flange seat and the movable gland, and a connecting nut connected to the connecting screw; when the connecting nut is connected to the connecting screw, the movable gland is fixed to the flange seat. In this solution, a connecting assembly is used to connect the flange seat and the movable gland, eliminating the need for long bolts to fasten the fixed gland and the movable gland, making assembly and disassembly more convenient and quick, the structure more stable, and the strength higher.

[0016] The second objective of this utility model is to provide a hydraulic spring-type double-roll crusher, characterized in that it includes the crushing roller shaft as described above. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the crushing roller shaft.

[0018] Figure 2 for Figure 1 AA sectional view. DETAILED DESCRIPTION

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] Example 1:

[0025] like Figure 1 and 2 As shown, this embodiment relates to a crushing roller shaft, including a main shaft 1, a fixed pressure cover 2 and a movable pressure cover assembly circumferentially positioned and installed on the main shaft 1, and a rolling ring 3 disposed on the circumferential outer side of the fixed pressure cover 2 and the movable pressure cover assembly.

[0026] In the specific design, the movable pressure cap assembly includes a flange seat 4 and a movable pressure cap 5. The flange seat 4 is circumferentially positioned on the main shaft 1 and separated from the fixed pressure cap 2 by a spacer sleeve 6. Specifically, keyways are constructed on the outer axial surface of the main shaft 1, the inner axial surface of the fixed pressure cap 2, and the inner axial surface of the flange seat 4, with pins 7 embedded in the slots. The fixed pressure cap 2 and the flange seat 4 are circumferentially positioned with the main shaft 1 by the pins 7, thus enabling circumferential linkage between the fixed pressure cap 2, the flange seat 4, and the main shaft 1.

[0027] A locking component 9 is connected to the main shaft 1 on the outer side of the flange seat 4 for axially locking the flange seat 4 and the fixed cover 2. The locking component 9 is constructed as a locking nut threaded onto the main shaft 1 for easy assembly and disassembly. In a further embodiment, when the locking component 9 presses against the flange seat 4, the end face of the fixed cover 2 away from the flange seat 4 presses against the main shaft 1. Specifically, the main shaft 1 has a positioning step, and the end face of the fixed cover 2 away from the flange seat 4 abuts against this positioning step. In this embodiment, the positioning step on the main shaft 1 is used to define the installation position of the fixed cover 2. When the locking component 9 is axially locked, the flange seat 4, the spacer sleeve 6, and the fixed cover 2 are pressed in sequence, and the fixed cover 2 is pressed against the positioning step of the main shaft 1, achieving axial locking and positioning.

[0028] As shown in the figure, the movable cover 5 is fixed to the flange seat 4 via a connecting assembly. In a specific embodiment, the flange seat 4 includes a main body 41 and a flange ring 42, with the flange ring 42 located on one side of the main body 41 and extending radially outward relative to the main body 41. During installation, the movable cover 5 is first fitted onto the main body 41 of the flange seat 4, and the connecting assembly fixes the movable cover 5 to the flange ring of the flange seat 4, thus achieving quick alignment and assembly. The connecting assembly includes a connecting screw 81 passing through the flange seat 4 and the movable cover 5, and a connecting nut 82 connected to the connecting screw 81. When the connecting nut 82 is connected to the connecting screw 81, the movable cover 5 is fixed to the flange seat 4. In this embodiment, a connecting assembly is used to connect the flange seat 4 and the movable cover 5, eliminating the need for long bolts to fasten the fixed cover 2 and the movable cover 5, making disassembly and assembly more convenient and quick, the structure more stable, and the strength higher.

[0029] The inner annular surfaces on both sides of the rolling ring 3 are respectively fastened to the outer annular surfaces of the fixed pressure cap 2 and the movable pressure cap 5. In a specific embodiment, both the fixed pressure cap 2 and the movable pressure cap 5 are constructed as frustoconical shapes with a smaller inner diameter and a larger outer diameter, so that the outer axial surface of the fixed pressure cap 2 and the outer axial surface of the movable pressure cap 5 are both constructed as first inclined surfaces 20 that gradually slope upward from the inside to the outside. The inner annular surfaces on both sides of the rolling ring 3 are constructed as second inclined surfaces 30 that are adapted to the first inclined surfaces 20. The inner annular surfaces on both sides of the rolling ring 3 are adapted to and abut against the inclined surfaces of the outer axial surfaces of the fixed pressure cap 2 and the outer axial surfaces of the movable pressure cap 5, respectively. In this embodiment, the middle area between the fixed pressure cap 2 and the movable pressure cap 5 is referred to as the inner side. Therefore, in the above scheme, both the outer axial surface of the fixed cover 2 and the outer axial surface of the movable cover 5 are constructed as first inclined surfaces 20 that gradually slope upwards from the inside to the outside. Since the fixed cover 2 and the movable cover 5 are located on opposite sides, the inclined surfaces of the outer axial surfaces of the fixed cover 2 and the movable cover 5 face opposite directions. Then, the inner annular surfaces on both sides of the rolling ring 3 are tightly fitted with the outer axial surfaces of the fixed cover 2 and the movable cover 5 respectively using an inclined surface fitting method. The inclined surface fit on both sides can simultaneously achieve axial and radial positioning, and after tight fitting, circumferential positioning can also be achieved, thus realizing the positioning and installation of the rolling ring 3. During disassembly, removing the movable cover 5 can release the axial, radial, and circumferential positioning of the rolling ring 3, thus achieving quick disassembly and assembly and improving disassembly and assembly efficiency.

[0030] In summary, the roller ring 3 in this crushing roller shaft is positioned on the main shaft 1 by the fixed pressure cover 2 and the movable pressure cover 5 assembly, thus forming a complete crushing roller shaft and achieving synchronous rotation. In the specific solution, the movable pressure cover assembly includes a flange seat 4 and a movable pressure cover 5. During installation, the flange seat 4 and the fixed pressure cover 2 are first positioned on the main shaft 1 and separated by a spacer sleeve 6, and then axially locked by a locking component 9. Then, the movable pressure cover 5 is fixed to the flange seat 4 by a connecting component. Finally, the inner annular surfaces on both sides of the roller ring 3 are respectively fastened to the outer annular surfaces of the fixed pressure cover 2 and the movable pressure cover 5, thus completing the installation. When maintaining or replacing the roller ring 3 of this crushing roller shaft, it is only necessary to disassemble the connecting component and remove the movable pressure cover 5 to remove the roller ring 3. In this way, the above solution solves the current problem of difficult replacement of crushing roller shafts, facilitates replacement during assembly and disassembly, greatly increases the replacement speed, and eliminates the need for operation in other locations, thereby improving replacement efficiency and effectively reducing the impact on production.

[0031] Example 2:

[0032] The second objective of this utility model is to provide a hydraulic spring-type double-roll crusher, including the crushing roller shaft described in Embodiment 1.

[0033] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A crushing roller shaft, comprising a main shaft (1), a fixed pressure plate (2) and a movable pressure plate (5) assembly circumferentially positioned and mounted on the main shaft (1), and a rolling ring (3) disposed circumferentially outside the fixed pressure plate (2) and the movable pressure plate (5) assembly; characterized in that: The movable cover (5) assembly includes a flange seat (4) and a movable cover (5). The flange seat (4) is circumferentially positioned on the main shaft (1) and separated from the fixed cover (2) by a spacer sleeve (6). A locking component (9) is connected to the main shaft (1) outside the flange seat (4) for axially locking the flange seat (4) and the fixed cover (2). The movable cover (5) is fixed to the flange seat (4) by a connecting component. The inner annular surfaces on both sides of the rolling ring (3) are respectively fastened to the outer annular surfaces of the fixed cover (2) and the movable cover (5).

2. A crushing roller shaft according to claim 1, characterized in that: When the locking component (9) presses the flange seat (4), the end face of the fixed cover (2) away from the flange seat (4) presses against the main shaft (1).

3. A crushing roller shaft according to claim 2, characterized in that: A positioning step is constructed on the main shaft (1), and the end face of the fixed cover (2) away from the flange seat (4) abuts against the positioning step.

4. A crushing roller shaft according to claim 2, characterized in that: The locking component (9) is constructed as a locking nut threaded onto the spindle (1).

5. A crushing roller shaft according to claim 1, characterized in that: Keyways are constructed on the outer shaft surface of the main shaft (1), the inner shaft surface of the fixed cover (2), and the inner shaft surface of the flange seat (4), and key pins (7) are embedded in the grooves; The fixed pressure cap (2) and flange seat (4) are circumferentially positioned with the main shaft (1) by key pin (7).

6. A crushing roller shaft according to claim 1, characterized in that: Both the fixed cap (2) and the movable cap (5) are constructed as frustoconical shapes with a small inner diameter and a large outer diameter, so that the outer axial surface of the fixed cap (2) and the outer axial surface of the movable cap (5) are constructed as first inclined surfaces (20) that gradually slope upward from the inside to the outside; the inner annular surfaces on both sides of the rolling ring (3) are constructed as second inclined surfaces (30) that are adapted to the first inclined surfaces (20); the inner annular surfaces on both sides of the rolling ring (3) are adapted to and abut against the outer axial surface of the fixed cap (2) and the outer axial surface of the movable cap (5), respectively.

7. A crushing roller shaft according to claim 6, characterized in that: The flange seat (4) includes a main body (41) and a flange ring (42), the flange ring (42) being located on one side of the main body (41) and extending radially outward relative to the opposite main body (41); the movable cover (5) is sleeved on the main body (41) of the flange seat (4), and the connecting assembly fixes the movable cover (5) to the flange ring of the flange seat (4).

8. A crushing roller shaft according to claim 1, 6, or 7, characterized in that: The connecting assembly includes a connecting screw (81) passing through the flange seat (4) and the movable cover (5), and a connecting nut (82) connected to the connecting screw (81); when the connecting nut (82) is connected to the connecting screw (81), the movable cover (5) is fixed to the flange seat (4).

9. A hydraulic spring-type double-roll crusher, characterized in that: Includes the crushing roller shaft according to any one of claims 1 to 8.

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