Crushing device working assembly and crushing device

Abstract

A crushing device assembly and crushing device, relating to the field of material crushing technology, includes a rotating shaft, multiple mounting discs, and a crushing unit. The multiple mounting discs are all fixed to the rotating shaft and are arranged at intervals along the axial direction of the rotating shaft. The crushing unit includes a mounting shaft and multiple working parts. The mounting shaft is simultaneously connected to multiple mounting discs, and the mounting shaft and each mounting disc are slidably engaged along the axial direction of the mounting shaft, allowing the mounting shaft to disengage from the mounting discs. The working parts are sleeved on the mounting shaft and are rotatably engaged with the mounting shaft. It allows for the replacement of different types of crushing blades as needed, has a wide range of applications, and low operating costs.

Description

Technical Field

[0001] This utility model relates to the field of material crushing technology, and more specifically, to a crushing device assembly and a crushing device. Background Technology

[0002] In many fields such as mining, construction, and road building, crushers are indispensable key equipment used to break large pieces of stone into smaller particles that meet specific needs, laying the foundation for subsequent processing and use. Traditional stone crushers have some significant problems that limit their efficiency and ease of use. From a structural design perspective, traditional crushers are mostly single-machine crushers or integral jaw crushers with secondary crushing. Single-machine crushing has low efficiency and a high workload, and the crushing components are prone to damage. Secondary crushing generally combines jaw crushing with hammer crushing or cutter crushing. The jaw crusher first reduces the particle size, and then the hammers or cutters further reduce the particle size, improving crushing efficiency, reducing damage to crushing components, and extending service life.

[0003] The inventors discovered during their research that existing two-stage crushing devices have at least the following drawbacks:

[0004] The secondary crushing unit is an integrated structure. The second-stage crushing mechanism can only be either a hammer crusher or a cutter crusher. Furthermore, the crushing components of the hammer crusher or cutter crusher are also fixed and cannot be replaced. In order to crush different materials, at least two secondary crushing units need to be configured, which is costly. Utility Model Content

[0005] The purpose of this utility model includes, for example, providing a crushing device assembly and a crushing device that can replace different types of crushing blades as needed, with low cost.

[0006] The embodiments of this utility model can be implemented as follows:

[0007] In a first aspect, this utility model provides a crushing device assembly, comprising:

[0008] The system comprises a rotating shaft, multiple mounting discs, and a crushing unit. The mounting discs are all fixed to the rotating shaft and are spaced apart along its axial direction. The crushing unit includes a mounting shaft and multiple working parts. The mounting shaft is connected to both the mounting discs, and each mounting disc is slidably engaged with the mounting shaft along its axial direction, allowing the mounting shaft to detach from the mounting disc. Each working part is sleeved around the mounting shaft and is rotatably engaged with it.

[0009] In an optional embodiment, there are multiple crushing units, which are arranged at intervals around the mounting plate.

[0010] In an optional embodiment, the mounting plate is provided with an assembly through hole, and the mounting shaft is slidably inserted into the assembly through hole.

[0011] In an optional embodiment, the crushing unit further includes a locking unit, which is mounted on the mounting shaft and located between two adjacent mounting discs. The locking unit contacts the two adjacent mounting discs on both sides of the axial direction of the mounting shaft.

[0012] The locking unit has a first state and a second state that can be switched between each other. In the first state, the locking unit and the mounting shaft are fixed relative to each other in the axial direction of the mounting shaft to restrict the mounting shaft from sliding relative to the mounting plate in the axial direction. In the second state, the locking unit and the mounting shaft are slidably engaged in the axial direction of the mounting shaft.

[0013] In an optional embodiment, the locking unit includes a locking plate and a locking bolt. The locking plate is provided with a communicating positioning channel and a notch, and the mounting shaft passes through the positioning channel. The locking bolt is connected to the locking plate and is used to adjust the opening of the notch.

[0014] When the locking unit is in the first state, the clamping plate holds the mounting shaft; when the locking unit is in the second state, the clamping plate releases the mounting shaft.

[0015] In an optional implementation, the working part is configured as a hammer or a blade.

[0016] Secondly, this utility model provides a crushing device, the crushing device comprising:

[0017] The housing and the crushing device assembly described in any of the foregoing embodiments, wherein the housing includes a first side plate and a second side plate arranged opposite to each other, the first side plate is provided with a first operating through hole, the second side plate is provided with a second operating through hole, and the first operating through hole and the second operating through hole are connected; the rotating shaft is rotatably connected to both the first side plate and the second side plate.

[0018] When the rotating shaft rotates, both ends of the mounting shaft can be exposed to the area enclosed by the first operating through hole and the second operating through hole, respectively.

[0019] In an optional embodiment, the crushing device further includes a first plug and a second plug, wherein the first plug is movably connected to the first side plate and is used to open or close the first operating through hole; and the second plug is movably connected to the second side plate and is used to open or close the second operating through hole.

[0020] In an optional embodiment, the housing is provided with a feed inlet and a discharge outlet arranged opposite to each other;

[0021] The crushing device further includes a baffle and a screen, both of which are connected to the casing. The baffle is located on the side of the screen away from the discharge port. The baffle is used to contact the material to reduce the probability of the material in the casing being discharged from the feed port. The screen is used to screen the material discharged from the discharge port.

[0022] In an optional embodiment, the screen includes a screen body, a first mounting strip, and a second mounting strip, both of which are connected to the screen body and are located on the side of the screen body closer to the discharge port; both the first mounting strip and the second mounting strip are detachably connected to the housing.

[0023] The beneficial effects of this utility model embodiment include, for example:

[0024] In summary, the crushing device assembly provided in this embodiment features a working component mounted on a mounting shaft. This working component rotates along with the mounting shaft, driven by the rotating shaft, and also rotates relative to the mounting shaft itself, reducing damage from material collisions and extending its service life. Simultaneously, the mounting shaft engages with multiple mounting discs, allowing it to slide axially relative to the discs. When changing the type of working component, applying force to the mounting shaft causes it to slide off the discs, allowing the original working component to detach easily. Then, a new type of working component can be selected to replace the original one. Furthermore, during the installation of the mounting shaft through the discs, the new type of working component is easily and quickly fitted onto the shaft. This allows for convenient and quick assembly. When crushing materials in different scenarios, the type of working component can be changed as needed without requiring multiple secondary crushing devices or replacing the entire hammer crusher or cutter crusher, resulting in low cost. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the working assembly of the crushing device in this embodiment;

[0027] Figure 2 This is a schematic diagram of the installation disk in this embodiment;

[0028] Figure 3 This is a schematic diagram of the working components in this embodiment;

[0029] Figure 4 This is a schematic diagram of the locking unit in this embodiment;

[0030] Figure 5 This is a schematic diagram of the crushing device from a first-view perspective in this embodiment;

[0031] Figure 6 This is a schematic diagram of the crushing device from a second perspective in this embodiment;

[0032] Figure 7 This is a schematic diagram of the casing in this embodiment;

[0033] Figure 8 This is a schematic diagram of the fit between the housing and the plug in this embodiment.

[0034] icon:

[0035] 100-Rotating shaft; 200-Mounting disc; 201-Fixing hole; 202-Assembly through hole; 210-First disc; 220-Second disc; 230-Third disc; 240-Fourth disc; 250-Fifth disc; 260-Sixth disc; 300-Crushing unit; 310-Mounting shaft; 320-Working part; 321-Putting hole; 400-Locking unit; 410-Clamping plate; 411-Positioning channel; 412-Notch; 420- Locking bolt; 500-Machine housing; 501-Feed inlet; 502-Discharge outlet; 510-First side plate; 511-First operating through hole; 520-Second side plate; 521-Second operating through hole; 600-First plug; 700-Second plug; 800-Baffle; 900-Screen; 910-Screen body; 920-First mounting strip; 930-Second mounting strip; 001-Pulley; 002-Flywheel; 003-Allowing hole. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is usually placed during use, 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, and therefore should not be construed as a limitation of this utility model.

[0040] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0041] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0042] Currently, secondary crushing devices are being used more and more frequently, enabling graded crushing of materials, improving crushing efficiency, and extending the service life of crushing components. However, existing secondary crushing devices have a single integrated structure for the primary and secondary crushers, and the crushing components of the secondary crusher cannot be replaced. When different types of materials need to be crushed, a corresponding type of secondary crusher must be used. Since the secondary crusher and its working components cannot be replaced, different types of secondary crushing devices can only be configured, resulting in high costs.

[0043] In view of this, the designers have provided a crushing device assembly that can reduce costs.

[0044] Please refer to Figures 1-4 This embodiment provides a crushing device assembly, including:

[0045] The system comprises a rotating shaft 100, multiple mounting discs 200, and a crushing unit 300. The multiple mounting discs 200 are all fixed to the rotating shaft 100 and are spaced apart along the axial direction of the rotating shaft 100. The crushing unit 300 includes a mounting shaft 310 and multiple working parts 320. The mounting shaft 310 is simultaneously connected to the multiple mounting discs 200, and the mounting shaft 310 and each mounting disc 200 are slidably engaged along the axial direction of the mounting shaft 310, allowing the mounting shaft 310 to disengage from the mounting disc 200. The working parts 320 are sleeved around the mounting shaft 310 and are rotatably engaged with the mounting shaft 310.

[0046] As described above, the working principle of the crushing device assembly provided in this embodiment is as follows:

[0047] A working component 320 is mounted on the mounting shaft 310. Driven by the rotating shaft 100, the working component 320 rotates along with the mounting shaft 310 and can also rotate relative to the mounting shaft 310, reducing damage caused by collisions with materials and extending its service life. Simultaneously, the mounting shaft 310 is inserted into multiple mounting discs 200, allowing it to slide axially relative to the discs. When the type of working component 320 needs to be changed, applying force to the mounting shaft 310 allows it to slide off the discs 200, and the original working component 320 can be detached from the mounting shaft 310, facilitating disassembly. Then, a new type of working component 320 can be selected to replace the original one. Furthermore, during the process of inserting the mounting shaft 310 into the mounting discs 200, the new type of working component 320 is sleeved onto the mounting shaft 310, making assembly convenient and quick. When crushing materials in different scenarios, the type of working part 320 can be changed according to the needs, without the need to configure multiple secondary crushing devices or replace the entire hammer crusher or knife crusher, thus reducing costs.

[0048] The following embodiments illustrate the details of the crushing device assembly of this application by way of example.

[0049] In this embodiment, optionally, the crushing device assembly includes a rotating shaft 100, six mounting discs 200, four crushing units 300, and four locking units 400. The six mounting discs 200 are all sleeved on the rotating shaft 100, and are evenly spaced along the axial direction of the rotating shaft 100. Each mounting disc 200 is fixedly connected to the rotating shaft 100. Each crushing unit 300 is simultaneously connected to all six mounting discs 200, and is evenly spaced along the circumference of the mounting discs 200. Each of the four crushing units 300 corresponds to one of the four locking units 400, and each crushing unit 300 can be detachably connected to the six mounting discs 200 via a locking unit 400, thereby enabling maintenance or replacement of the crushing units 300, expanding their application scenarios, and shortening their service life.

[0050] It should be noted that in some embodiments, the number of crushing units 300 is not limited to four; it can also be one, two, or five, etc., which will not be listed in this embodiment. Obviously, the number of mounting plates 200 is not limited to six either; it can be designed as needed.

[0051] Optionally, each mounting plate 200 can be configured as a disc, with a fixing hole 201 at its center and four mounting through holes 202 evenly spaced around the axis of the fixing hole 201. The mounting plate 200 is fitted onto the rotating shaft 100 using its fixing hole 201. The mounting plate 200 and the rotating shaft 100 are relatively fixed in both the circumferential and axial directions of the rotating shaft 100, meaning that the mounting plate 200 rotates with the rotating shaft 100 but will not slide along the axial direction of the rotating shaft 100. Each mounting through hole 202 can mate with one crushing unit 300. For ease of description, the four mounting through holes 202 on each mounting plate 200 are sequentially designated as the first hole, second hole, third hole, and fourth hole in the circumferential direction of the mounting plate 200. The six first holes of the six mounting plates 200 mate to form a first mounting part, the six second holes of the six mounting plates 200 mate to form a second mounting part, the six third holes of the six mounting plates 200 mate to form a third mounting part, and the six fourth holes of the six mounting plates 200 mate to form a fourth mounting part. The first mounting part, the second mounting part, the third mounting part, and the fourth mounting part are used to install four crushing units 300, respectively.

[0052] Furthermore, for ease of description, the six mounting discs 200 are arranged axially along the rotating shaft 100 as follows: first disc 210, second disc 220, third disc 230, fourth disc 240, fifth disc 250, and sixth disc 260.

[0053] Optionally, the four crushing units 300 can be configured with identical structures. Each crushing unit 300 includes a mounting shaft 310 and multiple working parts 320. Each mounting shaft 310 passes through corresponding mounting through holes 202 on six mounting discs 200. For example, the mounting shaft 310 passes through six first holes simultaneously, and the mounting shaft 310 and each mounting disc 200 are slidably engaged in the axial direction of the mounting shaft 310, so that the mounting shaft 310 can be disengaged from the mounting disc 200. Multiple working parts 320 are sleeved on the outside of the mounting shaft 310, and each working part 320 is rotatably engaged with the mounting shaft 310.

[0054] It should be understood that in some embodiments, the number of working parts 320 of different crushing units 300 may be different. For example, the number of working parts 320 of some crushing units 300 may be two, the number of working parts 320 of some crushing units 300 may be three, etc.

[0055] Optionally, each working component 320 is provided with a fitting hole 321, which can be a round hole. Each working component 320 is fitted onto the corresponding mounting shaft 310 through its fitting hole 321, so that the working component 320 can rotate around the mounting shaft 310. When crushing materials, the working component 320 comes into contact with the materials, and the working component 320 can rotate at a certain angle relative to the mounting shaft 310 under the action of impact force, thereby absorbing part of the impact force and reducing the probability of the working component 320 being damaged.

[0056] In addition, the working part 320 can be set as a hammer head or a blade, etc. Different types of working parts 320 can be selected as needed to adapt to different working scenarios.

[0057] In this embodiment, optionally, the locking unit 400 is mounted on the mounting shaft 310, and the locking unit 400 is located between two adjacent mounting discs 200. The locking unit 400 contacts the two adjacent mounting discs 200 on both sides of the axial direction of the mounting shaft 310. Furthermore, the locking unit 400 has a first state and a second state that can be switched between each other. When the locking unit 400 is in the first state, the locking unit 400 and the mounting shaft 310 are relatively fixed relative to each other in the axial direction of the mounting shaft 310. Since the locking unit 400 is in contact with the two adjacent mounting discs 200 at the same time, it can restrict the sliding of the mounting shaft 310 relative to the mounting discs 200 in its axial direction, ensuring that the working part 320 will not fall off the mounting disc 200 and can operate normally. When the locking unit 400 is in the second state, the locking unit 400 and the mounting shaft 310 are slidably engaged in the axial direction of the mounting shaft 310. In this way, force can be applied to the mounting shaft 310 to make it slide relative to the mounting plate 200, thereby removing the mounting shaft 310 from the mounting plate 200 and allowing the working part 320 to be replaced.

[0058] Optionally, the locking unit 400 includes a clamping plate 410 and a locking bolt 420. The clamping plate 410 is provided with a communicating positioning channel 411 and a notch 412, and the mounting shaft 310 passes through the positioning channel 411. The locking bolt 420 is connected to the clamping plate 410 and is used to adjust the opening of the notch 412. That is, the locking bolt 420 includes a screw and two nuts. The screw passes through both sides of the clamping plate 410 forming the notch 412, and the two nuts are screwed onto the screw. The two nuts cooperate to clamp the opposite sides of the clamping plate 410. When the nuts are rotated, the two nuts can be brought closer together, thereby pushing the opposite sides of the clamping plate 410 closer together, reducing the opening of the notch 412, reducing the diameter of the positioning channel 411, and using the clamping plate 410 to hold the mounting shaft 310. Thus, the locking unit 400 is in the first state. Correspondingly, when the nut is loosened, the opening of the notch 412 increases, the diameter of the positioning channel 411 increases, the clamping plate 410 loosens the mounting shaft 310, and the locking unit 400 is in the second state.

[0059] The locking unit 400 can be adjusted by turning the nut, making the operation convenient and flexible.

[0060] It should be noted that two of the four locking units 400 are installed between the third disk 230 and the fourth disk 240, another locking unit 400 is installed between the second disk 220 and the third disk 230, and the last locking unit 400 is installed between the fourth disk 240 and the fifth disk 250. Clearly, the installation positions of the locking units 400 are designed as needed, and will not be listed individually in this embodiment.

[0061] It should be understood that when it is necessary to change the type of working part 320 or repair working part 320, loosen the nut, the clamping plate 410 releases the mounting shaft 310, force is applied to the mounting shaft 310 to make it move along its own axis, the mounting shaft 310 disengages from the six mounting discs 200 in sequence, and correspondingly, the working part 320 located on the mounting shaft 310 disengages from the mounting shaft 310. Then, place the fitting hole 321 of the new working part 320 on the movement path of the mounting shaft 310, that is, align the fitting hole 321 with the assembly through hole 202. The mounting shaft 310 can pass through the assembly through hole 202 and the fitting hole 321 to realize the assembly with the mounting disc 200 and the new working part 320, which is convenient to operate.

[0062] In addition, in some embodiments, there may be two clamping plates 410, both of which are semi-circular plates. The two clamping plates 410 cooperate to form a positioning channel 411 and two notches 412. Both sides of the two clamping plates 410 are fixedly connected by locking bolts 420.

[0063] The crushing device assembly provided in this embodiment allows for the replacement of the working component 320 as needed. This not only meets the diverse application scenarios but also reduces costs. Furthermore, the replacement of the working component 320 is convenient, quick, and highly efficient.

[0064] Please refer to Figures 5-8 This embodiment also provides a crushing device, including a housing 500 and the crushing device assembly described in the above embodiment. The housing 500 includes a first side plate 510 and a second side plate 520 arranged opposite to each other. The first side plate 510 is provided with four first operating through holes 511, which are coaxially aligned with the four mounting through holes 202 on the mounting plate 200. The second side plate 520 is provided with four second operating through holes 521, which are coaxially aligned with the four mounting through holes 202 on the mounting plate 200. Thus, the first operating through holes 511, the second operating through holes 521, and the six coaxial mounting through holes 202 communicate with each other. A rotating shaft 100 is rotatably connected to both the first side plate 510 and the second side plate 520. When the rotating shaft 100 rotates, both ends of the mounting shaft 310 are exposed in the areas enclosed by the first operating through holes 511 and the second operating through holes 521. Thus, a steel pipe or other tool can be inserted into the first operating through hole 511, and the steel pipe can contact one end of the mounting shaft 310. When the locking unit 400 is in the second state, the mounting shaft 310 is pushed to slide relative to the mounting plate 200. The other end of the mounting shaft 310 can extend out from the second operating through hole 521, thereby removing the mounting shaft 310 from the mounting plate 200, which facilitates the subsequent replacement of the working part 320.

[0065] Optionally, the crushing device further includes a first plug 600 and a second plug 700. The first plug 600 is movably connected to the first side plate 510 and is used to open or close the first operating through hole 511; the second plug 700 is movably connected to the second side plate 520 and is used to open or close the second operating through hole 521. The number of first plugs 600 is equal to the number of first operating through holes 511, and the number of second plugs 700 is equal to the number of second operating through holes 521. By setting the first plug 600 and the second plug 700, impurities can be prevented from entering the housing 500 through the first operating through holes 511 and the second operating through holes 521, and materials inside the housing 500 can also be prevented from being discharged through the first operating through holes 511 and the second operating through holes 521.

[0066] Optionally, the casing 500 is a rectangular cylindrical shell with open ends. One open end is the feed inlet 501, and the other is the discharge outlet 502. The feed inlet 501 and the discharge outlet 502 are arranged opposite each other. The working component 320 is located between the feed inlet 501 and the discharge outlet 502. The feed inlet 501 allows material to be input, and then the material falls onto the working component 320 and is crushed by the working component 320.

[0067] Optionally, the crushing device also includes a baffle 800 and a screen 900. Both the baffle 800 and the screen 900 are connected to the casing 500. The baffle 800 is located on the side of the screen 900 away from the discharge port 502. The baffle 800 is used to contact the material to reduce the probability of material in the casing 500 being discharged from the feed port 501, and to prevent material from returning to the first-stage crushing mechanism under the impact of the working part 320. The screen 900 is used to screen the material discharged from the discharge port 502. That is, when the working part 320 crushes the material, the material that meets the particle size requirement can pass through the screen 900 and thus be discharged from the discharge port 502.

[0068] Optionally, the screen 900 includes a screen body 910, a first mounting strip 920, and a second mounting strip 930. Both the first mounting strip 920 and the second mounting strip 930 are connected to the screen body 910 and are located on the side of the screen body 910 near the discharge port 502. Both the first mounting strip 920 and the second mounting strip 930 are detachably connected to the housing 500 via bolt assemblies. By disassembling and assembling the screen 900, it is easy to replace the screen 900, and different aperture screens 900 can be replaced as needed to achieve screening of materials with different particle sizes.

[0069] In addition, when it is necessary to replace the working part 320, the screen 900 is removed, and force is applied to the rotating shaft 100, which can drive the working part 320 to rotate to the discharge port 502. The working part 320 can be disassembled and assembled from the discharge port 502, which is convenient.

[0070] Optionally, the two ends of the rotating shaft 100 extend out of the first side plate 510 and the second side plate 520, respectively. A pulley 001 and a flywheel 002 are respectively installed at both ends of the rotating shaft 100. The pulley 001 cooperates with the belt body, thereby transmitting power to the pulley 001 via a hydraulic motor, driving the rotating shaft 100 to rotate. To prevent the pulley 001 and flywheel 002 from interfering with the removal of the mounting shaft 310, clearance holes are provided on both the pulley 001 and flywheel 002. The number and position of the clearance holes correspond to the first operating through hole 511 or the second operating through hole 521. The steel pipe first passes through the corresponding clearance hole 003, and then through the first operating through hole 511. It should be understood that when disassembling the working component 320, all four mounting shafts 310 can be disassembled simultaneously. When installing the working component 320, each crushing unit 300 is installed sequentially from the discharge port 502. That is, rotate the corresponding assembly through hole 202 on the mounting plate 200 to the discharge port 502. After installing one crushing unit 300, the rotating shaft 100 rotates, and the installed crushing unit 300 leaves the discharge port 502. In addition, the assembly through hole 202 to be installed is rotated to the discharge port 502.

[0071] The crushing device provided in this embodiment can replace the type of working part 320 as needed, has a wide range of applications, and low operating costs.

[0072] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A crushing device assembly, characterized in that, include: The device comprises a rotating shaft (100), multiple mounting discs (200), and a crushing unit (300). The multiple mounting discs (200) are all fixed on the rotating shaft (100) and are spaced apart along the axial direction of the rotating shaft (100). The crushing unit (300) includes a mounting shaft (310) and multiple working parts (320). The mounting shaft (310) is connected to the multiple mounting discs (200) and the mounting shaft (310) and each mounting disc (200) are slidably engaged along the axial direction of the mounting shaft (310) so that the mounting shaft (310) can disengage from the mounting disc (200). The working parts (320) are sleeved on the mounting shaft (310) and are rotatably engaged with the mounting shaft (310).

2. The crushing device assembly according to claim 1, characterized in that: The number of the crushing units (300) is multiple, and the multiple crushing units (300) are arranged at intervals in the circumferential direction of the mounting plate (200).

3. The crushing device assembly according to claim 1, characterized in that: The mounting plate (200) is provided with an assembly through hole (202), and the mounting shaft (310) is slidably inserted into the assembly through hole (202).

4. The crushing device assembly according to any one of claims 1-3, characterized in that: The crushing unit (300) further includes a locking unit (400), which is mounted on the mounting shaft (310). The locking unit (400) is located between two adjacent mounting discs (200), and the locking unit (400) contacts the two adjacent mounting discs (200) on both sides of the axial direction of the mounting shaft (310). The locking unit (400) has a first state and a second state that can be switched between each other. In the first state, the locking unit (400) and the mounting shaft (310) are fixed relative to each other in the axial direction of the mounting shaft (310) to restrict the mounting shaft (310) from sliding relative to the mounting disc (200) in its axial direction. In the second state, the locking unit (400) and the mounting shaft (310) are slidably engaged in the axial direction of the mounting shaft (310).

5. The crushing device assembly according to claim 4, characterized in that: The locking unit (400) includes a locking plate (410) and a locking bolt (420). The locking plate (410) is provided with a communicating positioning channel (411) and a notch (412). The mounting shaft (310) passes through the positioning channel (411). The locking bolt (420) is connected to the locking plate (410) and is used to adjust the opening of the notch (412). When the locking unit (400) is in the first state, the clamping plate (410) holds the mounting shaft (310); when the locking unit (400) is in the second state, the clamping plate (410) releases the mounting shaft (310).

6. The crushing device assembly according to any one of claims 1-3, characterized in that: The working part (320) is configured as a hammer or a blade.

7. A crushing device, characterized in that, The crushing device includes: The housing (500) and the crushing device assembly according to any one of claims 1-6, wherein the housing (500) includes a first side plate (510) and a second side plate (520) arranged opposite to each other, the first side plate (510) is provided with a first operating through hole (511), and the second side plate (520) is provided with a second operating through hole (521), the first operating through hole (511) and the second operating through hole (521) are connected in communication; the rotating shaft (100) is rotatably connected to both the first side plate (510) and the second side plate (520); When the rotating shaft (100) rotates, both ends of the mounting shaft (310) can be exposed to the area enclosed by the first operating through hole (511) and the second operating through hole (521), respectively.

8. The crushing device according to claim 7, characterized in that: The crushing device further includes a first plug (600) and a second plug (700). The first plug (600) is movably connected to the first side plate (510) and is used to open or close the first operating through hole (511). The second plug (700) is movably connected to the second side plate (520) and is used to open or close the second operating through hole (521).

9. The crushing device according to claim 7, characterized in that: The housing (500) is provided with a feed inlet (501) and a discharge outlet (502) arranged opposite to each other. The crushing device further includes a baffle (800) and a screen (900), both of which are connected to the housing (500). The baffle (800) is located on the side of the screen (900) away from the discharge port (502). The baffle (800) is used to contact the material to reduce the probability of the material in the housing (500) being discharged from the feed port (501). The screen (900) is used to screen the material discharged from the discharge port (502).

10. The crushing device according to claim 9, characterized in that: The screen (900) includes a screen body (910), a first mounting strip (920) and a second mounting strip (930). The first mounting strip (920) and the second mounting strip (930) are both connected to the screen body (910) and are both located on the side of the screen body (910) near the discharge port (502). The first mounting strip (920) and the second mounting strip (930) are both detachably connected to the housing (500).

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