Transmission structure, drive assembly and vertical crusher

Abstract

The utility model provides a kind of transmission structure, drive assembly and vertical crusher, the transmission structure includes: transmission shaft and bearing seat, transmission shaft has the first connecting end and second connecting end being spaced apart along vertical direction, first connecting end is set in the upper of second connecting end and is used to be connected with the output end of motor, second connecting end is used to be connected with the driven piece, bearing seat is sleeved on transmission shaft, and installation space is formed between bearing seat and transmission shaft;Support structure is set on transmission shaft and is located in installation space, first bearing, it is sleeved on transmission shaft, the inner ring of first bearing is supported on the support end surface of support structure, the outer ring of first bearing is positioned with bearing seat, and first bearing is tapered roller bearing.Through the technical scheme provided by the utility model, the technical problem that transmission structure in prior art is sagged under the gravity of transmission shaft and is prone to cause bearing damage can be solved.

Description

Technical Field

[0001] This utility model relates to the field of transmission structure technology, specifically to a transmission structure, a drive component, and a vertical crusher. Background Technology

[0002] In the current field of crusher technology, vertical shaft impact crushers (VHSCs) are widely used, highly efficient, and energy-saving equipment, playing a crucial role, especially in the recycling and processing of household appliances such as refrigerators. The core of a VHSC lies in its unique vertical structural design and high-speed rotating hammers or blades, enabling rapid and effective crushing of materials. However, current VHSCs on the market have significant limitations in the design of their motor spindles, resulting in limited equipment performance and high maintenance costs. Traditional motor spindle structures use a motor that transmits power to the spindle via a coupling, which then drives the crusher's large hammers or blades for crushing operations. This design has revealed a series of problems in practical applications, seriously affecting the reliability of the VHSC. With prolonged use, the motor spindle may sag; the upper locking nut may gradually loosen during operation, failing to effectively secure the motor spindle, causing it to gradually sag under gravity.

[0003] However, this sagging phenomenon can make existing bearings prone to damage. While existing bearings can withstand radial forces, they are not suitable for axial forces. As the spindle sags, the axial force increases significantly, causing the lower bearing to bear excessive axial force, thus accelerating wear and making it prone to overheating and damage. Utility Model Content

[0004] The main objective of this invention is to provide a transmission structure, drive assembly, and vertical crusher to solve the technical problem in the prior art where the transmission structure sags under the gravity of the drive shaft, which easily leads to bearing damage.

[0005] To achieve the above objectives, according to one aspect of the present invention, a transmission structure is provided, comprising:

[0006] A drive shaft and a bearing housing, wherein the drive shaft has a first connecting end and a second connecting end spaced apart in a vertical direction, the first connecting end is disposed above the second connecting end and is used to connect to the output end of a motor, the second connecting end is used to connect to a component to be driven, and the bearing housing is sleeved on the drive shaft, forming an installation space between the bearing housing and the drive shaft;

[0007] A support structure is provided on the drive shaft and located within the mounting space.

[0008] The first bearing is sleeved on the transmission shaft. The inner ring of the first bearing is supported on the support end face of the support structure. The outer ring of the first bearing is positioned and fitted with the bearing housing. The first bearing is a tapered roller bearing.

[0009] Furthermore, the transmission structure also includes:

[0010] The second bearing is sleeved on the drive shaft and is located above the first bearing;

[0011] A limiting structure is provided on the drive shaft and located at the end of the second bearing away from the first bearing, and the limiting structure is positioned by abutting against the inner ring of the second bearing;

[0012] The second bearing is a tapered roller bearing.

[0013] Furthermore, a first limiting step is provided on the drive shaft, and the first limiting step and the support structure are spaced apart along the axial direction of the drive shaft. The first limiting step and the support structure are respectively used to limit and abut against the upper and lower ends of the inner ring of the first bearing; and / or,

[0014] The drive shaft is provided with a second limiting step, which is spaced apart from the limiting structure along the axial direction of the drive shaft. The second limiting step and the limiting structure are respectively used to limit and abut the upper and lower ends of the inner ring of the second bearing.

[0015] Furthermore, the bearing housing includes a first end cap, a bearing sleeve, and a second end cap connected in sequence. The first end cap is detachably connected to the bottom end of the bearing sleeve, and the first end cap is detachably connected to the top end of the bearing sleeve.

[0016] The bearing sleeve is provided with a third limiting step, which is spaced apart from the limiting end of the first end cap. The third limiting step and the first end cap are used to limit and abut against the upper and lower ends of the outer ring of the first bearing, respectively; and / or,

[0017] The bearing sleeve is provided with a fourth limiting step, which is spaced apart from the limiting end of the second end cover. The fourth limiting step and the second end cover are respectively used to limit and abut the upper and lower ends of the outer ring of the second bearing.

[0018] Furthermore, the support structure and / or the limiting structure include:

[0019] At least two locking members are spaced apart along the extension direction of the drive shaft, the locking members are provided with internal threads, and at least a portion of the drive shaft is provided with external threads adapted to the internal threads;

[0020] A stop washer is disposed between two adjacent locking members, and the stop washer is engaged with the drive shaft or has an interference fit with the drive shaft.

[0021] Furthermore, the bearing housing includes a first end cap, a bearing sleeve, and a second end cap connected in sequence. The first end cap is detachably connected to the bottom end of the bearing sleeve, and the first end cap is detachably connected to the top end of the bearing sleeve.

[0022] The first end cap is provided with a first fitting opening, which is fitted onto the drive shaft. The transmission structure further includes a first sealing element, which is disposed at the first fitting opening and located between the first end cap and the drive shaft; and / or,

[0023] The second end cover is provided with a second sleeve opening, which is fitted onto the drive shaft. The transmission structure also includes a second sealing element, which is disposed at the second sleeve opening and located between the second end cover and the drive shaft.

[0024] Furthermore, the transmission structure also includes:

[0025] A third seal is disposed within the installation space and located between the bearing housing and the drive shaft, the third seal being disposed between the first bearing and the second bearing.

[0026] Furthermore, the first bearing is a single-row tapered roller bearing; and / or,

[0027] The second bearing is a single-row tapered roller bearing; and / or,

[0028] The first bearing is installed in a back-to-back mounting manner; and / or,

[0029] The second bearing is installed using a back-to-back mounting method.

[0030] According to another aspect of the present invention, a driving component is provided, comprising:

[0031] Electric motor;

[0032] In the transmission structure provided above, the output shaft of the motor is drivenly connected to the transmission structure.

[0033] According to another aspect of the present invention, a vertical crusher is provided, comprising:

[0034] The driver components provided above;

[0035] A crushing assembly, the crushing assembly including a hammer and / or blades, and a drive assembly drivenly connected to the crushing assembly.

[0036] By applying the technical solution of this utility model, the transmission structure proposed in this application optimizes the support and limiting mechanism of the motor spindle. By employing tapered roller bearings and adopting a back-to-back installation method, the damage problem caused by axial force on the bearings in the original design is effectively solved. The new design not only significantly improves the stability and reliability of the equipment, reduces maintenance frequency, and lowers costs, but also extends the service life of the equipment and improves work efficiency. In the practical application of vertical crushers, this improved solution enables the equipment to operate stably for extended periods, avoiding frequent downtime for maintenance, thereby greatly improving production efficiency and economic benefits. Attached Figure Description

[0037] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0038] Figure 1 A schematic diagram of the transmission structure provided according to an embodiment of the present invention is shown from one perspective;

[0039] Figure 2 A schematic diagram of the transmission structure provided according to an embodiment of the present invention is shown from another perspective;

[0040] Figure 3 It shows Figure 2 AA diagram in the image;

[0041] Figure 4 It shows Figure 3 A magnified view of a portion of the image.

[0042] The above figures include the following reference numerals:

[0043] 10. Drive shaft;

[0044] 11. First limiting step;

[0045] 12. Second limiting step;

[0046] 20. Bearing housing;

[0047] 21. First end cap;

[0048] 22. Bearing sleeve;

[0049] 221. Third limiting step;

[0050] 222. Fourth limiting step;

[0051] 23. Second end cap;

[0052] 30. Electric motor;

[0053] 40. Supporting structure;

[0054] 50. First bearing;

[0055] 60. Second bearing;

[0056] 70. Limiting structure;

[0057] 81. Locking components;

[0058] 82. Stop washer;

[0059] 91. First sealing element;

[0060] 92. Second sealing element;

[0061] 93. Third sealing element;

[0062] 100. Belt pulley;

[0063] 110. Oil nozzle;

[0064] 120. Wind blades;

[0065] 130. Coupling;

[0066] 140. Mounting plate. Detailed Implementation

[0067] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0068] like Figures 1 to 4 As shown, an embodiment of this utility model provides a transmission structure, which includes: a transmission shaft 10 and a bearing housing 20. The transmission shaft 10 has a first connecting end and a second connecting end spaced apart in a vertical direction. The first connecting end is disposed above the second connecting end and is used to connect to the output end of a motor 30. The second connecting end is used to connect to a component to be driven. The bearing housing 20 is sleeved on the transmission shaft 10, and an installation space is formed between the bearing housing 20 and the transmission shaft 10. A support structure 40 is disposed on the transmission shaft 10 and located within the installation space. A first bearing 50 is sleeved on the transmission shaft 10. The inner ring of the first bearing 50 is supported on the support end face of the support structure 40, and the outer ring of the first bearing 50 is positioned and fitted with the bearing housing 20. The first bearing 50 is a tapered roller bearing.

[0069] This embodiment uses a tapered roller bearing as the first bearing 50, which can withstand larger radial and axial loads, effectively solving the problem of bearing wear due to excessive axial force in traditional structures. Thus, even if the drive shaft 10 sags due to gravity, the first bearing 50 will not be easily damaged. In principle, the tapered roller bearing's design allows it to withstand both radial and axial forces simultaneously, improving its load-bearing capacity and service life. In terms of effectiveness, the technology in this embodiment achieves more stable and durable operation, reduces the frequency of bearing failure, and lowers equipment maintenance costs.

[0070] It should be noted that the vertical direction includes the vertical direction itself and the direction at a preset angle to the vertical direction, which can be from 0° to 30°.

[0071] In this embodiment, the transmission structure further includes: a second bearing 60 and a limiting structure 70. The second bearing 60 is sleeved on the transmission shaft 10 and is located above the first bearing 50. The limiting structure 70 is disposed on the transmission shaft 10 and located at the end of the second bearing 60 away from the first bearing 50. The limiting structure 70 abuts against and positions the inner ring of the second bearing 60. The second bearing 60 is a tapered roller bearing.

[0072] Specifically, by adding a second bearing 60 (corresponding to a tapered roller bearing) and a limiting structure 70 above the drive shaft, the support and positioning of the drive shaft can be further enhanced, preventing it from sagging under gravity. In principle, the second bearing 60 and the first bearing 50 work together to form a stable support system that can effectively resist axial and radial unbalanced forces. In terms of effect, the technology in this embodiment achieves good straightness of the drive shaft during long-term operation, improving the operating efficiency and reliability of the equipment. In other embodiments, the position and number of bearings can be adjusted to adapt to different loads and operating conditions.

[0073] Both the upper and lower bearings are single-row tapered roller bearings, installed back-to-back. This allows the lower bearing (the first bearing) to withstand both large radial and axial forces. Even after long-term operation, once the support and limiting structures above and below the drive shaft are locked, neither bearing (including the first and second bearings) will loosen or be damaged. This structure has proven effective in field applications and operates stably over extended periods.

[0074] Specifically, the transmission shaft 10 is provided with a first limiting step 11, which is spaced apart from the support structure 40 along the axial direction of the transmission shaft 10. The first limiting step 11 and the support structure 40 are respectively used to limit and abut the upper and lower ends of the inner ring of the first bearing 50; and / or, the transmission shaft 10 is provided with a second limiting step 12, which is spaced apart from the limiting structure 70 along the axial direction of the transmission shaft 10. The second limiting step 12 and the limiting structure 70 are respectively used to limit and abut the upper and lower ends of the inner ring of the second bearing 60.

[0075] By setting a limiting step on the drive shaft, the axial position of the bearing can be precisely controlled, preventing axial movement of the bearing during operation, thereby improving the stability of the drive shaft and the service life of the bearing. In principle, the design of the limiting step is based on the bearing dimensions and axial force calculations, ensuring that the bearing remains in a predetermined position under stress. In terms of effect, the technology in this embodiment achieves precise control of the bearing position, reducing wear and failures caused by bearing position misalignment. In other embodiments, other types of limiting structures, such as retaining rings or snap rings, can also be used to achieve axial positioning of the bearing.

[0076] In this embodiment, the bearing housing 20 includes a first end cap 21, a bearing sleeve 22, and a second end cap 23 connected in sequence. The first end cap 21 is detachably connected to the bottom end of the bearing sleeve 22, and the first end cap 21 is detachably connected to the top end of the bearing sleeve 22. This facilitates the installation of the bearing housing 20.

[0077] Specifically, the bearing sleeve 22 is provided with a third limiting step 221, which is spaced apart from the limiting end of the first end cover 21. The third limiting step 221 and the first end cover 21 are respectively used to limit and abut against the upper and lower ends of the outer ring of the first bearing 50; and / or, the bearing sleeve 22 is provided with a fourth limiting step 222, which is spaced apart from the limiting end of the second end cover 23. The fourth limiting step 222 and the second end cover 23 are respectively used to limit and abut against the upper and lower ends of the outer ring of the second bearing 60.

[0078] This embodiment achieves axial positioning of the outer ring by setting a limiting step on the bearing housing, ensuring stable operation of the bearing on the drive shaft. In principle, the design of the limiting step takes into account the bearing's dimensions and the distribution of axial force to achieve optimal positioning. In terms of effect, the technology in this embodiment achieves precise positioning of the bearing's outer ring, improving the drive shaft's operating accuracy and the bearing's load-bearing capacity. In other embodiments, the position and size of the limiting step can be adjusted to accommodate different types of bearings and drive shafts with varying axial force distributions.

[0079] In this embodiment, the support structure 40 and / or the limiting structure 70 include: at least two locking members 81 spaced apart along the extension direction of the transmission shaft 10 and a stop washer 82. The locking members 81 are provided with internal threads, and at least a portion of the transmission shaft 10 is provided with external threads adapted to the internal threads. The stop washer 82 is placed between two adjacent locking members 81, and the stop washer 82 is engaged with the transmission shaft 10 or has an interference fit with the transmission shaft 10.

[0080] By using the locking element 81 and the stop washer 82, the stability of the support can be improved, minimizing the possibility of the support structure 40 slipping due to the weight of the drive shaft 10. Furthermore, the support and limiting structures are adjustable and maintainable, facilitating on-site installation and adjustment. In principle, the combined use of the locking element 81 and the stop washer 82 effectively prevents the locking element from loosening during operation, ensuring the long-term stability of the bearing position. In terms of effect, the technology in this embodiment reliably fixes the drive shaft support and limiting structure, reducing bearing damage caused by loosening of the locking element. In other embodiments, other types of locking and stopping structures, such as keyways or elastic pins, can also be used to achieve the support and limiting of the drive shaft 10.

[0081] Specifically, locking component 81 is a locking nut.

[0082] Specifically, the first end cap 21 is provided with a first sleeve opening, which is sleeved on the transmission shaft 10. The transmission structure also includes a first sealing element 91, which is disposed at the first sleeve opening and located between the first end cap 21 and the transmission shaft 10; and / or, the second end cap 23 is provided with a second sleeve opening, which is sleeved on the transmission shaft 10. The transmission structure also includes a second sealing element 92, which is disposed at the second sleeve opening and located between the second end cap 23 and the transmission shaft 10.

[0083] Specifically, by providing seals (first seal 91 and / or second seal 92) between the end cover of the bearing housing and the drive shaft, external impurities can be effectively prevented from entering the bearing, protecting the bearing from contamination and extending its service life. In principle, the seal design considers the balance between sealing performance and friction, ensuring that while sealing, it does not generate excessive resistance to the operation of the drive shaft. In terms of effectiveness, the technology in this embodiment achieves efficient bearing sealing, reducing bearing wear and failures caused by impurities. In other embodiments, different types of seals, such as lip seals or labyrinth seals, can be used to adapt to different working environments and sealing requirements.

[0084] Specifically, the transmission structure further includes a third seal 93, which is disposed within the installation space and located between the bearing housing 20 and the transmission shaft 10, and is disposed between the first bearing 50 and the second bearing 60.

[0085] By incorporating a third seal 93 between the bearings, the sealing performance of the bearings can be further improved, preventing lubricant leakage and the ingress of external impurities. In principle, the design of the third seal 93 takes into account the space between the bearings and the distribution of axial forces to achieve optimal sealing. In terms of effectiveness, the technology in this embodiment achieves efficient sealing between the bearings, improving the operational stability of the drive shaft and the service life of the bearings. In other embodiments, the material and shape of the seal can be adjusted to adapt to different operating conditions and sealing requirements.

[0086] Specifically, the first seal 91 and the second seal 92 can be a skeleton-type sealing structure with an inner lip. The third seal 93 can be an oil seal seat.

[0087] Specifically, the first bearing 50 is a single-row tapered roller bearing; and / or, the second bearing 60 is a single-row tapered roller bearing; and / or, the first bearing 50 is installed back-to-back; and / or, the second bearing 60 is installed back-to-back.

[0088] By employing single-row tapered roller bearings and mounting them back-to-back, the axial load-carrying capacity of the bearings can be improved, and the impact of axial forces on the bearings can be reduced. In principle, the back-to-back mounting method utilizes the mutual support between the bearings, increasing their axial stiffness. In terms of effect, the technology in this embodiment achieves efficient axial support for the bearings, improving the operational stability of the drive shaft and extending the bearing's service life. In other embodiments, double-row tapered roller bearings or adjusting the bearing mounting method, such as face-to-face or tandem mounting, can be used to adapt to different axial forces and operating conditions.

[0089] The transmission structure in this embodiment also includes a pulley 100, an oil nozzle 110, a fan blade 120, a coupling 130, and a mounting plate 140.

[0090] Secure the bearing sleeve, install the oil seal seat and the first seal, install the drive shaft into the motor mounting plate, and then install the first bearing and the limiting structure. The limiting structure installation includes rotating the round nut, installing two round nuts, and interlocking them. Install the second end cover, and simultaneously install the second seal, then install the entire assembly into the motor mounting plate and the upper coupling. Next, install the lower support structure: install the round nuts with locking washers, install two M105 round nuts, and interlock them. Install the first end cover, install the fan blade, install the tapered sleeve pulley, install the upper motor, and tighten all screws. Installation is complete.

[0091] After the above components are installed, the power is turned on, the motor rotates, and through the coupling, it drives the lower moving shaft to rotate, which in turn drives the tapered belt pulley to rotate, and then drives the crusher main shaft to rotate and crush the refrigerator. Since the implementation of this structure, it has been operating stably for more than half a year without any bearing damage (the old structure had bearing damage almost once a month). The performance is good, reducing the number of equipment maintenance, reducing the number of easily damaged bearings, reducing consumption, and greatly improving efficiency, thus increasing the company's profits.

[0092] Another embodiment of this utility model provides a drive component, including: a motor 30 and the aforementioned transmission structure, wherein the output shaft of the motor 30 is drivenly connected to the transmission structure. This embodiment, by directly driving the motor and the transmission structure, can improve transmission efficiency and reduce energy loss. In principle, the output shaft of the motor and the transmission shaft are connected by a coupling, ensuring smooth power transmission. In terms of effect, the technology in this embodiment achieves efficient power transmission and improves the operating efficiency of the equipment. In other embodiments, other types of drive components, such as hydraulic motors or pneumatic motors, can be used to adapt to different working environments and power requirements.

[0093] Another embodiment of this utility model provides a vertical crusher, including: a drive assembly and a crushing assembly as provided in the above embodiment, wherein the crushing assembly includes hammers and / or blades, and the drive assembly is drivenly connected to the crushing assembly. This embodiment achieves high-efficiency operation and stable performance of the crusher by applying the above-mentioned drive assembly to the vertical crusher. In principle, the motor transmits power to the crushing assembly through a transmission structure, and the crushing assembly crushes the material through hammers or blades. In terms of effect, the technology in this embodiment achieves high-efficiency crushing and long-term stable operation of the vertical crusher, reduces equipment maintenance costs, and improves production efficiency. In other embodiments, the structure and materials of the crushing assembly can be adjusted to adapt to different crushing requirements and material types.

[0094] When motor 30 starts, its output shaft drives transmission shaft 10 to rotate via a coupling. The rotation of transmission shaft 10 is transmitted to the crushing components of the crusher through the support of first bearing 50 and second bearing 60, causing the hammers or blades in the crushing components to rotate at high speed, crushing the material entering the crusher. During the crushing process, first bearing 50 and second bearing 60 can withstand radial and axial loads from the crushing components, ensuring stable operation of the transmission shaft. Simultaneously, the combined use of bearing housing 20, support structure 40, and limiting structure 70 ensures precise control and long-term stability of the bearing position, thereby improving the operating efficiency and reliability of the vertical crusher. In other embodiments, the power of the motor and the parameters of the transmission structure can be adjusted to adapt to different crushing requirements and material types.

[0095] As can be seen from the above description, the above embodiments of this utility model achieve the following technical effects: solve the problem of motor spindle sagging; solve the problem of easy damage to the upper and lower second bearings and first bearings; reduce costs; reduce maintenance frequency; improve efficiency and increase benefits.

[0096] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0097] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0098] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0099] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0100] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0101] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A transmission structure, characterized by, include: A drive shaft (10) and a bearing housing (20) are provided. The drive shaft (10) has a first connecting end and a second connecting end that are spaced apart in the vertical direction. The first connecting end is located above the second connecting end and is used to connect to the output end of a motor (30). The second connecting end is used to connect to a component to be driven. The bearing housing (20) is sleeved on the drive shaft (10). An installation space is formed between the bearing housing (20) and the drive shaft (10). A support structure (40) is disposed on the drive shaft (10) and located within the mounting space. The first bearing (50) is sleeved on the transmission shaft (10). The inner ring of the first bearing (50) is supported on the support end face of the support structure (40). The outer ring of the first bearing (50) is positioned and fitted with the bearing seat (20). The first bearing (50) is a tapered roller bearing.

2. The transmission arrangement of claim 1, wherein, The transmission structure also includes: The second bearing (60) is sleeved on the transmission shaft (10), and the second bearing (60) is located above the first bearing (50); A limiting structure (70) is provided on the transmission shaft (10) and located at the end of the second bearing (60) away from the first bearing (50). The limiting structure (70) abuts against the inner ring of the second bearing (60) for positioning. The second bearing (60) is a tapered roller bearing.

3. The transmission structure according to claim 2, characterized in that, A first limiting step (11) is provided on the drive shaft (10). The first limiting step (11) and the support structure (40) are spaced apart along the axial direction of the drive shaft (10). The first limiting step (11) and the support structure (40) are respectively used to limit and abut the upper and lower ends of the inner ring of the first bearing (50); and / or, The transmission shaft (10) is provided with a second limiting step (12), the second limiting step (12) and the limiting structure (70) are spaced apart along the axial direction of the transmission shaft (10), and the second limiting step (12) and the limiting structure (70) are respectively used to limit and abut the upper and lower ends of the inner ring of the second bearing (60).

4. The transmission arrangement of claim 2, wherein The bearing housing (20) includes a first end cap (21), a bearing sleeve (22), and a second end cap (23) connected in sequence. The first end cap (21) is detachably connected to the bottom end of the bearing sleeve (22), and the first end cap (21) is detachably connected to the top end of the bearing sleeve (22). The bearing sleeve (22) is provided with a third limiting step (221), which is spaced apart from the limiting end of the first end cap (21). The third limiting step (221) and the first end cap (21) are respectively used to limit and abut the upper and lower ends of the outer ring of the first bearing (50); and / or, The bearing sleeve (22) is provided with a fourth limiting step (222), which is spaced apart from the limiting end of the second end cover (23). The fourth limiting step (222) and the second end cover (23) are respectively used to limit and abut the upper and lower ends of the outer ring of the second bearing (60).

5. The transmission arrangement of claim 2, wherein, The support structure (40) and / or the limiting structure (70) include: At least two locking members (81) are spaced apart along the extension direction of the drive shaft (10), the locking members (81) are provided with internal threads, and at least a portion of the drive shaft (10) is provided with external threads adapted to the internal threads; A stop washer (82) is disposed between two adjacent locking members (81), and the stop washer (82) is engaged on the drive shaft (10) or has an interference fit with the drive shaft (10).

6. The transmission arrangement of claim 1, wherein, The bearing housing (20) includes a first end cap (21), a bearing sleeve (22), and a second end cap (23) connected in sequence. The first end cap (21) is detachably connected to the bottom end of the bearing sleeve (22), and the first end cap (21) is detachably connected to the top end of the bearing sleeve (22). The first end cap (21) is provided with a first fitting opening, which is fitted onto the transmission shaft (10). The transmission structure also includes a first sealing element (91), which is disposed at the first fitting opening and located between the first end cap (21) and the transmission shaft (10); and / or, The second end cap (23) is provided with a second sleeve opening, which is sleeved on the transmission shaft (10). The transmission structure also includes a second seal (92), which is provided at the second sleeve opening and located between the second end cap (23) and the transmission shaft (10).

7. The transmission arrangement of claim 2, wherein, The transmission structure also includes: A third seal (93) is disposed within the installation space and located between the bearing housing (20) and the drive shaft (10), the third seal (93) being disposed between the first bearing (50) and the second bearing (60).

8. The transmission structure according to claim 2, characterized in that, The first bearing (50) is a single-row tapered roller bearing; and / or, The second bearing (60) is a single-row tapered roller bearing; and / or, The first bearing (50) is installed in a back-to-back mounting manner; and / or, The second bearing (60) is installed in a back-to-back mounting manner.

9. A drive assembly characterized by, include: Motor (30); According to any one of claims 1 to 8, the output shaft of the motor (30) is drivenly connected to the transmission structure.

10. A vertical crusher characterized by include: The driving component as described in claim 9; A crushing assembly, the crushing assembly including a hammer and / or blades, and a drive assembly drivenly connected to the crushing assembly.

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