CC type mining cage crusher

Abstract

The utility model discloses a CC type mining cage crusher. The static crushing machine comprises a first-stage belt pulley housing, a first-stage shaft assembly, a housing subassembly, a static crushing plate, a first-stage driving motor, a second-stage shaft assembly, a second-stage driving motor, a second-stage belt pulley housing, an underframe subassembly, a vibration reduction buffer, a guide rail, a first-stage belt pulley assembly, a second-stage belt pulley assembly, a first-stage rotating cage assembly, a second-stage rotating cage assembly and a feeding pipe assembly. The underframe subassembly is used for supporting steel structural members such as the shell subassembly, the first-stage rotating cage assembly, the second-stage rotating cage assembly, the first-stage driving motor and the second-stage driving motor; according to the utility model, the first-stage rotating cage and the second-stage rotating cage share one shaft assembly instead of being arranged in a manner that the first-stage rotating cage shaft assembly and the second-stage rotating cage shaft assembly are independent from each other. The rotary gap between the first-stage rotary cage and the second-stage rotary cage is large, high coaxiality control is not needed, the rotary cage is more suitable for being arranged in a slender space, later maintenance is facilitated, and the maintenance cost is lower.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of coal mine machinery, and particularly relates to a CC type mine cage type pulverizer. BACKGROUND

[0002] Most of the cage type pulverizers on the market are small pulverizers, and the single power is generally not higher than 200KW, and they are generally used in the food industry, such as crushing feed and grain, and the crushed material is generally less than 50MPa. Although this type of crusher also uses the principle of impact crushing, it cannot be used in the mining industry due to its simple structure and low equipment strength.

[0003] Bortle company has developed an industrial cage type pulverizer for crushing gangue, coal and other mine materials; for details, refer to the patent "mine cage type pulverizer", application number: CN202223200436.4, authorization announcement number: CN218902094U; this mine cage type pulverizer has a more prominent feature, that is, the shaft assembly of the first-stage rotating cage and the second-stage rotating cage is a coaxial structure, that is, the shaft of the second-stage rotating cage is a hollow shaft, the shaft of the first-stage rotating cage is a core shaft, and the structure type of the core shaft in the hollow shaft.

[0004] The advantage of the structure of this mine cage type pulverizer is that the shaft group shares a set of shaft seat, which can reduce the cost, but it also has the following disadvantages:

[0005] 1. High coaxiality requirement: because the second-stage hollow shaft serves as the driving main shaft and also as the bearing seat of the first-stage core shaft, the coaxiality requirement of the hollow shaft and the core shaft is relatively high. High coaxiality requirement means higher cost;

[0006] 2. The overall size is relatively wide. Because of the coaxial structure of the shaft assembly, the first-stage rotating cage motor and the second-stage rotating cage motor must be arranged on one side. As a result, the overall width of the device will be greatly increased. Such an arrangement will be difficult to arrange in a narrow space such as an underground tunnel.

[0007] 3. Because the directions of rotation of the core shaft and the hollow shaft are opposite, the actual speed of the core shaft bearing = the speed of the hollow shaft + the speed of the core shaft. This means that the speed of the bearing is much higher than the required speed of the rotating cage, generally twice the speed (i.e. the speeds of the two-stage rotating cages are the same, but the directions of rotation are opposite). Because the limit speed of the bearing is limited, this means that the speed of the rotating cage cannot be higher. The speed of the rotating cage is directly proportional to the particle size of the processed material. Therefore, this crusher cannot make the crushed material finer.

[0008] 4. The cross section of the impact plate of the cage type pulverizer is a trapezoidal cross section, that is, a planar impact. This impact plate is suitable for crushing brittle materials. However, if the material contains non-crushable materials such as iron blocks, it will be trapped between the first-stage and second-stage rotating cages, causing the first-stage and second-stage rotating cages to collide. Utility model content

[0009] Based on the technical problems existing in the prior art, the utility model provides a CC type mine cage type crusher, solves the problems of high coaxiality requirement, wide overall size of equipment, demand rotation speed of bearing far higher than that of rotating cage, trapezoidal section of impact plate not suitable for breaking of ductile material and the like in the prior art solutions.

[0010] According to the technical scheme of the utility model, the utility model provides a CC type mine cage type crusher, including primary pulley cover shell, primary shaft assembly, shell part, primary drive motor, secondary shaft assembly, secondary drive motor, secondary pulley cover shell and underframe part, the primary pulley cover shell is arranged at the rear of the underframe part, the primary pulley cover shell is internally provided with primary pulley assembly, the primary shaft assembly is arranged between the primary pulley cover shell and the shell part, the torque from the primary drive motor is transmitted to the primary rotating cage assembly, and the primary rotating cage assembly is provided with rotary motion, the shell part is arranged at the middle position of the underframe part, the shell part is arranged between the primary pulley cover shell and the secondary pulley cover shell and is connected through the primary shaft assembly and the secondary shaft assembly, the primary drive motor and the secondary drive motor are all arranged at one side of the underframe part, and the primary drive motor and the secondary drive motor are arranged front and back, the secondary pulley cover shell is arranged at the front of the underframe part, the secondary pulley cover shell is internally provided with secondary pulley assembly, and the underframe part is used for supporting the steel structural member of the shell part, the primary rotating cage assembly, the secondary rotating cage assembly, the primary drive motor, the secondary drive motor and the like.

[0011] Preferably, the primary shaft assembly is composed of bearing seat, bearing, mandrel, sealing and the like components. The shell part is internally provided with primary rotating cage assembly, secondary rotating cage assembly and static crushing plate, the static crushing plate is installed in the shell part and is arranged below the primary rotating cage assembly and the secondary rotating cage assembly.

[0012] Preferably, the shell part is used for protecting the primary rotating cage assembly and the secondary rotating cage assembly. The primary drive motor provides power and torque for the primary rotating cage assembly. The underframe part is provided with damping buffer below.

[0013] Preferably, the primary rotating cage assembly and the secondary rotating cage assembly are independently arranged. Guide rails are arranged above the underframe part and below the secondary shaft assembly. The primary pulley assembly includes large pulley, small pulley and transmission belt and is used for transmitting the torque of the primary drive motor to the primary shaft assembly. The secondary pulley assembly includes large pulley, small pulley and transmission belt and is used for transmitting the torque of the secondary drive motor to the secondary shaft assembly.

[0014] Compared with the prior art, the utility model has the beneficial technical effects as follows:

[0015] 1. The rotation gap of the primary cage and the secondary cage is large. When being matched, only simple adjustment is needed to meet the rotation requirement, and high coaxiality control is not needed.

[0016] 2. Compared with the traditional model, the appearance size of the CC series crusher is thinner and longer, and is more suitable for being arranged in a slender space, such as an underground roadway.

[0017] 3. The bearing outer rings of the shaft group are fixed, and only the inner rings rotate, so that the rotation speed of the cage can be easily increased, and the limit rotation speed of the super-high bearing is not worried, and therefore the CC series model is more likely to obtain thinner products.

[0018] 4. The impact plate with a trapezoidal section can be selected, or the impact plate with a circular section can be selected. Especially the rotation effect of the impact plate with a circular section can discharge unbreakable materials, and does not cause mutual impact of the cages, and the safety of the equipment is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structure diagram of a CC type mine cage type crusher.

[0020] Figure 2 is a structure diagram of a CC type mine cage type crusher.

[0021] Explanation of reference signs in the drawings:

[0022] 1. primary pulley cover; 2. primary shaft assembly; 3. shell part; 4. static crushing plate; 5. primary drive motor; 6. secondary shaft assembly; 7. secondary drive motor; 8. secondary pulley cover; 9. underframe part; 10. damping buffer; 11. guide rail; 12. primary pulley assembly; 13. secondary pulley assembly; 14. primary cage assembly; 15. secondary cage assembly; 16. feeding pipe assembly. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme in the utility model will be described clearly and completely in combination with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the protection range of the utility model.

[0024] In addition, it is also needed to be explained that only the parts related to the utility model are shown in the drawings for convenience of description. In the case of no conflict, the embodiments in the utility model and the features in the embodiments can be combined with each other.

[0025] It should be noted that the concepts of "first" and "second" mentioned in this utility model are only used to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0026] It should be noted that the terms "a" and "a plurality of" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0027] This invention provides a CC-type cage crusher for mining. The material to be crushed enters the center of the primary rotating cage assembly 14 directly through the feed pipe assembly 16. The primary rotating cage assembly 14 and the secondary rotating cage assembly 15 rotate in opposite directions, and the material undergoes multi-stage impact crushing within the rotating cage. After passing through the primary rotating cage assembly 14 and the secondary rotating cage assembly 15, only sufficiently large particles are crushed. Products that have already met the requirements from the previous crushing stage are not subject to secondary crushing; therefore, less dust is generated.

[0028] To address the difficulty in controlling coaxiality, this invention replaces the shared shaft assembly between the primary and secondary rotating cages with an independent arrangement of their respective shaft assemblies. Each machine has two shaft assemblies, each driving one set of rotating cages. This improvement eliminates the coaxiality problem of the concentric shaft assemblies.

[0029] By modifying the design to use two shaft assemblies, a set of shaft assemblies can be arranged on each side of the housing, with each shaft assembly equipped with a drive unit. This allows the drive units to be positioned on both sides of the equipment, reducing the width of the crusher and enabling it to be installed in a long and narrow space.

[0030] When the system is changed to a two-shaft assembly, the bearing speed becomes the same as the drum speed. Theoretically, the drum speed can reach the bearing's maximum speed. Since the drum speed is directly proportional to the crushing effect, a higher speed yields a finer product.

[0031] Impact plates with either trapezoidal or circular cross-sections can be selected. Different types of impact plates can be used depending on the actual needs, and different types can be installed to adapt to different materials to achieve the maximum crushing ratio. Circular cross-section impact plates are suitable for crushing brittle materials and are insensitive to the presence of uncrushable materials. When uncrushable materials such as iron blocks enter the material, the rotation of the circular cross-section impact plate will discharge the material, preventing collisions between the rotating drums and ensuring equipment safety.

[0032] Please see Figure 1 , Figure 2As shown, this utility model discloses a CC-type mining cage crusher, comprising a primary pulley cover 1, a primary shaft assembly 2, a shell assembly 3, a static crushing plate 4, a primary drive motor 5, a secondary shaft assembly 6, a secondary drive motor 7, a secondary pulley cover 8, a base frame assembly 9, a vibration damper 10, a guide rail 11, a primary pulley assembly 12, a secondary pulley assembly 13, a primary rotating cage assembly 14, a secondary rotating cage assembly 15, and a feed pipe assembly 16. This CC-type mining cage crusher replaces the shared shaft assembly for the primary and secondary rotating cages with an independent arrangement of the primary and secondary rotating cage shaft assemblies. Each unit has two shaft assemblies, each driving a separate rotating cage; its structure is similar to the "CC" structure.

[0033] The primary pulley cover 1 is located at the rear of the base frame assembly 9. The primary pulley assembly 12 is housed inside the primary pulley cover 1, providing protection for it. Furthermore, the primary pulley cover 1 is an auxiliary component of the equipment. Generally, the material and structure of the cover do not affect the performance of the crusher. No specific stipulations are made regarding the material and structure of the cover.

[0034] The primary shaft assembly 2 is located between the primary pulley cover 1 and the housing component 3, transmitting the torque from the primary drive motor 5 to the primary rotating drum assembly 14 and providing rotational motion for the primary rotating drum assembly 14. Furthermore, the primary shaft assembly 2 consists of components such as a bearing housing, bearings, a spindle, and seals.

[0035] The housing assembly 3 is located in the middle of the base frame assembly 9. The housing assembly 3 is located between the primary pulley cover 1 and the secondary pulley cover 8, and is connected by the primary shaft assembly 2 and the secondary shaft assembly 6.

[0036] The housing assembly 3 contains a primary rotating drum assembly 14, a secondary rotating drum assembly 15, and a static crushing plate 4. The static crushing plate 4 is installed inside the housing assembly 3 and is located below the primary rotating drum assembly 14 and the secondary rotating drum assembly 15. When material exceeding the limit is discharged from the rotating drum, it impacts the static crushing plate 4 under the action of initial velocity, and the material is further crushed by impact under the action of momentum.

[0037] Preferably, the housing assembly 3 is used to protect the primary rotating drum assembly 14 and the secondary rotating drum assembly 15. It is preferably made of steel. The material contact parts are lined with wear-resistant plates; inspection windows are arranged on the housing for routine inspections.

[0038] Both the primary drive motor 5 and the secondary drive motor 7 are located on one side of the base frame assembly 9, arranged front to back. The primary drive motor 5 is located at the rear of the base frame assembly 9 and is connected to the primary pulley assembly 12. Preferably, the primary drive motor 5 provides power and torque to the primary rotating drum assembly 14.

[0039] The secondary drive motor 7 is located on the front side of the base frame assembly 9 and is connected to the secondary pulley assembly 13. It provides power and torque to the secondary rotating drum assembly (15).

[0040] The secondary shaft assembly 6 is disposed between the housing component 3 and the secondary pulley cover 8, transmitting the torque from the secondary drive motor 7 to the secondary rotating drum assembly 15 and providing rotational motion for the secondary rotating drum assembly 15. Furthermore, the secondary shaft assembly 6 consists of components such as a bearing housing, bearings, a spindle, and seals.

[0041] The secondary pulley cover 8 is located at the front of the base frame assembly 9. The secondary pulley assembly 13 is housed inside the secondary pulley cover 8, which provides protection for the assembly. Furthermore, the secondary pulley cover 8 is an auxiliary component of the equipment. Generally, the material and structure of the cover do not affect the performance of the crusher. No specific stipulations are made regarding the material and structure of the cover.

[0042] The base frame assembly 9 is used to support the steel structural components of the housing assembly 3, the primary rotating cage assembly 14, the secondary rotating cage assembly 15, the primary drive motor 5, and the secondary drive motor 7.

[0043] The vibration damper 10 is located below the base frame 9 to provide cushioning for the equipment, reduce vibration transmission, and reduce noise.

[0044] The guide rail 11 is mounted on the base frame 9 and below the secondary shaft assembly 6. When the equipment is under maintenance, the secondary shaft assembly 6 can be pushed to slide on the guide rail 11 to create space for personnel to perform maintenance.

[0045] The primary pulley assembly 12 is disposed inside the primary pulley housing 1 and includes a large pulley, a small pulley and a transmission belt, for transmitting the torque of the primary drive motor 5 to the primary shaft assembly 2.

[0046] The secondary pulley assembly 13 is disposed inside the secondary pulley housing 8 and includes a large pulley, a small pulley and a transmission belt, for transmitting the torque of the secondary drive motor 7 to the secondary shaft assembly 6.

[0047] The primary rotating drum assembly 14 and the secondary rotating drum assembly 15 are arranged independently and each drives a set of rotating drums. They are the core components of the crusher and can be configured with 1, 2, or 3 drums depending on the crushing requirements of the material.

[0048] The feed pipe assembly 16 is located on the outside of the housing part 3. After the material enters the first-stage rotating drum assembly 14 through the feed pipe assembly 16, it begins to be crushed. It is the material channel.

[0049] The components of the primary rotating drum assembly 14 and the secondary rotating drum assembly 15 are connected by bolts and other fixing elements, which facilitates the maintenance and replacement of individual components in the later stage without the need for large-scale dismantling of equipment, reducing equipment maintenance costs, reducing the labor intensity of workers, and greatly improving industrial efficiency.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A CC-type cage crusher for mining, characterized in that, It includes a primary pulley cover (1), a primary shaft assembly (2), a housing assembly (3), a primary drive motor (5), a secondary shaft assembly (6), a secondary drive motor (7), a secondary pulley cover (8), and a base frame assembly (9). The primary pulley cover (1) is located at the rear of the base frame assembly (9), and a primary pulley assembly (12) is provided inside the primary pulley cover (1). The primary shaft assembly (2) is located between the primary pulley cover (1) and the housing assembly (3); it transmits the torque from the primary drive motor (5) to the primary rotating cage assembly (14) and provides rotational motion for the primary rotating cage assembly (14); The housing assembly (3) is located in the middle of the base frame assembly (9). The housing assembly (3) is located between the primary pulley cover (1) and the secondary pulley cover (8), and is connected by the primary shaft assembly (2) and the secondary shaft assembly (6). The primary drive motor (5) and the secondary drive motor (7) are both located on one side of the base frame assembly (9), and the primary drive motor (5) and the secondary drive motor (7) are arranged in front and behind each other; The secondary pulley cover (8) is located at the front of the base frame assembly (9), and the secondary pulley assembly (13) is located inside the secondary pulley cover (8). The base frame assembly (9) is a steel structure used to support the housing assembly (3), the first-stage rotating cage assembly (14), the second-stage rotating cage assembly (15), the first-stage drive motor (5), and the second-stage drive motor (7).

2. The CC-type cage crusher for mining as described in claim 1, characterized in that, The primary shaft assembly (2) includes a bearing housing, a bearing, a spindle, and a seal.

3. The CC-type cage crusher for mining according to claim 1, characterized in that, The shell assembly (3) is provided with a primary rotating drum assembly (14), a secondary rotating drum assembly (15) and a static crushing plate (4). The static crushing plate (4) is installed inside the shell assembly (3) and arranged below the primary rotating drum assembly (14) and the secondary rotating drum assembly (15).

4. The CC-type cage crusher for mining as described in claim 1, characterized in that, The housing assembly (3) is used to protect the primary rotating drum assembly (14) and the secondary rotating drum assembly (15).

5. The CC-type cage crusher for mining according to claim 1, characterized in that, The primary drive motor (5) provides power and torque to the primary rotating cage assembly (14).

6. The CC-type cage crusher for mining according to claim 1, characterized in that, A vibration damping buffer (10) is installed below the base frame assembly (9).

7. The CC-type cage crusher for mining according to claim 3, characterized in that, The primary rotating drum assembly (14) and the secondary rotating drum assembly (15) are arranged independently of each other.

8. The CC-type cage crusher for mining according to claim 1, characterized in that, The guide rail (11) is located above the base frame assembly (9) and below the secondary shaft assembly (6).

9. The CC-type cage crusher for mining according to claim 1, characterized in that, The primary pulley assembly (12) includes a large pulley, a small pulley and a transmission belt, used to transmit the torque of the primary drive motor (5) to the primary shaft assembly (2).

10. The CC-type cage crusher for mining according to claim 1, characterized in that, The secondary pulley assembly (13) includes a large pulley, a small pulley and a transmission belt, used to transmit the torque of the secondary drive motor (7) to the secondary shaft assembly (6).

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