Power assembly and crushing apparatus

Abstract

The application relates to the technical field of crushing equipment, and discloses a power assembly and a crushing equipment. The power assembly comprises a rotor assembly, a motor, an upper connecting cone sleeve, a lower connecting cone sleeve and a central connecting piece. The output shaft of the motor is connected with the lower connecting cone sleeve, the rotor assembly is connected with the upper connecting cone sleeve, the lower connecting cone sleeve is limitedly inserted into the upper connecting cone sleeve and connected with the upper connecting cone sleeve, and the output shaft of the motor is connected with the rotor assembly through the central connecting piece. Compared with the V-belt connecting structure in the prior art, the power assembly has the advantages of simple structure, low installation and connection requirement and low cost. Meanwhile, the central connecting piece, the upper connecting cone sleeve and the lower connecting cone sleeve simultaneously connect the rotor assembly and the motor, and the connecting strength is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of crushing equipment, and in particular to a power assembly and a crushing equipment. BACKGROUND

[0002] Sand making machines are used for crushing ore materials, and are widely used in many fields such as metallurgy, building materials, highways, railways, water conservancy and chemical industry. The rotor assembly is the core component of the sand making machine. At present, a motor is usually used as the power driving device of the rotor assembly. In the prior art, the motor and the rotor assembly are usually connected by a V-belt to transmit the power of the motor to the rotor assembly. The connection form has high cost and poor stability. SUMMARY

[0003] The present application provides a power assembly and a crushing equipment, which are used to solve or improve the problem of high cost and poor stability caused by connecting the motor and the rotor assembly by a V-belt to transmit power in the existing sand making machine.

[0004] According to a first aspect of the present application, a power assembly is provided, comprising:

[0005] a rotor assembly;

[0006] a motor, an output shaft of the motor being connected to the rotor assembly through a central connecting piece;

[0007] an upper connecting cone sleeve, the upper connecting cone sleeve being connected to the rotor assembly;

[0008] a lower connecting cone sleeve, the lower connecting cone sleeve being limitingly inserted into the upper connecting cone sleeve and connected to the upper connecting cone sleeve, and the output shaft of the motor being connected to the lower connecting cone sleeve.

[0009] According to the power assembly provided by the present application, the power assembly further comprises a rotor mounting plate. The upper connecting cone sleeve is welded to the rotor assembly. The rotor mounting plate is fastened to the upper connecting cone sleeve through a connecting piece. The lower connecting cone sleeve is fastened to the rotor mounting plate through the connecting piece. The output shaft of the motor is inserted into the lower connecting cone sleeve and is keyed to the lower connecting cone sleeve.

[0010] According to the power assembly provided by the present application, the power assembly further comprises a machine base. A through mounting hole is formed in the machine base. The motor is mounted in the interior of the machine base. The output shaft of the motor extends to the exterior of the machine base through the through mounting hole and is connected to the rotor assembly.

[0011] The upper connecting cone sleeve comprises a tapered connecting part and a limiting part. The limiting part is connected to the outer edge of the tapered connecting part. The tapered connecting part is inserted and connected with the lower connecting cone sleeve through the through installation hole. The limiting part is limited and clamped to the outer edge of the through installation hole.

[0012] According to the power assembly provided by the application, the output shaft of the motor is provided with a sealing device between the through installation hole, the upper connecting cone sleeve and the lower connecting cone sleeve.

[0013] According to the power assembly provided by the application, the sealing device comprises a first sealing body, a second sealing body and an extended sealing section. The first sealing body, the second sealing body and the extended sealing section are of an integrated structure. The second sealing body is spaced apart and arranged on the inner side of the first sealing body. The extended sealing section is arranged on the inner side of the second sealing body, and the first sealing body is supported to the edge of the through installation hole.

[0014] A first sealing groove is formed on the first sealing body. A second sealing groove is formed on the second sealing body. A first sealing fitting body and a second sealing fitting body are spaced apart and arranged on the limiting part. The first sealing fitting body is sealingly inserted into the first sealing groove. The second sealing fitting body is sealingly inserted into the second sealing groove. The extended sealing section is sealingly inserted between the tapered connecting part, the lower side of the lower connecting cone sleeve and the output shaft of the motor.

[0015] According to the power assembly provided by the application, a motor installation support is arranged inside the machine base. The motor is connected with the inner side wall of the machine base through the motor installation support.

[0016] According to the power assembly provided by the application, the motor installation support comprises a connecting plate, a supporting plate and a baffle plate.

[0017] The supporting plate is connected with the inner side wall of the machine base and supports the shell of the motor. The baffle plate is connected with the supporting plate, and the baffle plate is arranged outside the shell of the motor. One end of the connecting plate is connected with the baffle plate, and the other end of the connecting plate is connected with the inner side wall of the machine base.

[0018] According to the power assembly provided by the application, the motor installation support further comprises a reinforced connecting cone sleeve assembly. The reinforced connecting cone sleeve assembly comprises an upper reinforced connecting cone sleeve and a lower reinforced connecting cone sleeve.

[0019] The upper reinforcing connecting cone sleeve is sleeved to the outside of the shell of the motor. Along the direction from bottom to top, the cross-sectional outer diameter of the upper reinforcing connecting cone sleeve gradually increases, and the cross-sectional inner diameter of the lower reinforcing connecting cone sleeve gradually increases. The lower reinforcing connecting cone sleeve is connected to the outside of the upper reinforcing connecting cone sleeve in a plug-in manner to support the upper reinforcing connecting cone sleeve. The baffle is connected with an intermediate connecting section. The lower reinforcing connecting cone sleeve is connected with the intermediate connecting section through fasteners.

[0020] According to the power assembly provided by the application, the motor is a single variable-frequency permanent magnet synchronous motor.

[0021] According to the second aspect of the application, a crushing device is provided, which comprises the power assembly as described above.

[0022] In the power assembly provided by the application, the output shaft of the motor is connected to the inside of the lower connecting cone sleeve in a penetrating manner. The upper connecting cone sleeve is connected to the rotor assembly. The upper connecting cone sleeve and the lower connecting cone sleeve are matched with each other. The lower connecting cone sleeve can be limitedly plugged into the upper connecting cone sleeve and connected with the upper connecting cone sleeve. Meanwhile, the output shaft of the motor is also connected with the rotor assembly through the central connecting piece.

[0023] Compared with the V-belt connecting structure in the prior art, the power assembly has a simple structure, low installation and connecting requirements, and low cost. Meanwhile, the central connecting piece, the upper connecting cone sleeve and the lower connecting cone sleeve are used to simultaneously connect the rotor assembly and the motor, so that the connecting strength is greatly improved.

[0024] Further, in the crushing device provided by the application, since it comprises the power assembly as described above, it also has the advantages as described above. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0026] Figure 1 is a structural schematic view of a power assembly of one embodiment provided by the application;

[0027] Figure 2 is Figure 1 is a local enlarged view of A in FIG. 4;

[0028] Figure 3 is Figure 1 is a local enlarged view of B in FIG. 4;

[0029] Figure 4Figure 2 is a schematic view of a connection structure of a rotor assembly, a rotor mounting plate and an upper connecting cone sleeve in a power assembly according to an embodiment of the present application;

[0030] Figure 5 Figure 3 is a schematic view of a connection structure of a base, a motor and a motor mounting support in a power assembly according to an embodiment of the present application;

[0031] Figure 6 Figure 4 is a partial enlarged view of a position C in Figure 3; Figure 5

[0032] Reference signs:

[0033] 100, rotor assembly; 200, motor; 310, upper connecting cone sleeve; 311, conical connecting part; 312, limiting part; 313, first sealing fitting; 314, second sealing fitting; 320, lower connecting cone sleeve; 400, rotor mounting plate; 500, base; 600, sealing device; 610, first sealing body; 611, first sealing groove; 620, second sealing body; 621, second sealing groove; 630, extended sealing section; 700, motor mounting support; 710, connecting plate; 720, support plate; 730, baffle plate; 740, intermediate connecting section; 810, upper reinforcing connecting cone sleeve; 820, lower reinforcing connecting cone sleeve; 900, central connecting piece. DETAILED DESCRIPTION

[0034] The embodiments of the present application will be further described below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0035] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0036] ​In the description of the embodiments of the present application, it should be noted that unless specifically defined and limited otherwise, the terms "connected", "connected to", "connection" should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integral connection, can be mechanical connection, can also be electrical connection, can be directly connected, or indirectly connected through intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0037] In the embodiments of the present application, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only means that the first feature is higher in horizontal height than the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only means that the first feature is lower in horizontal height than the second feature.

[0038] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, different embodiments or examples described in the present application and the features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction, so that the purpose, technical solution and advantages of the present application are more clear. The technical solutions of the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0039] The following will be described in conjunction with Figures 1 to 6 A power assembly and a crushing device are described. It should be understood that the following description is only a schematic embodiment of the present application and does not constitute any special limitation on the present application.

[0040] The embodiments of the first aspect of the present application provide a power assembly, such as Figure 1 , Figure 2 andFigure 4 and Figure 5 The power assembly comprises:

[0041] a rotor assembly 100;

[0042] a motor 200, an output shaft of the motor 200 being connected with the rotor assembly 100 through a center connecting piece 900;

[0043] an upper connecting cone sleeve 310, the upper connecting cone sleeve 310 being connected with the rotor assembly 100;

[0044] a lower connecting cone sleeve 320, the lower connecting cone sleeve 320 being limitingly inserted into the upper connecting cone sleeve 310 and connected with the upper connecting cone sleeve 310, an output shaft of the motor 200 being connected with the lower connecting cone sleeve 320.

[0045] In the power assembly provided by the application, the output shaft of the motor 200 is inserted into the inner side of the lower connecting cone sleeve 320. The rotor assembly 100 is connected with the upper connecting cone sleeve 310. The upper connecting cone sleeve 310 and the lower connecting cone sleeve 320 are adapted to each other. The lower connecting cone sleeve 320 can be limitingly inserted into the upper connecting cone sleeve 310 and connected with the upper connecting cone sleeve 310. Meanwhile, the output shaft of the motor 200 is also connected with the rotor assembly 100 through the center connecting piece 900.

[0046] Through the structure, compared with the V-belt connecting structure in the prior art, the power assembly has simple structure, low installation and connecting requirement and low cost. Meanwhile, the center connecting piece 900 and the upper connecting cone sleeve 310 and the lower connecting cone sleeve 320 are used to simultaneously connect the rotor assembly 100 and the motor 200, so that the connecting strength is greatly improved.

[0047] In an embodiment of the application, the power assembly further comprises a rotor mounting plate 400. The upper connecting cone sleeve 310 is welded with the rotor assembly 100. The rotor mounting plate 400 is fastened with the upper connecting cone sleeve 310 through a connecting piece. The lower connecting cone sleeve 320 is fastened with the rotor mounting plate 400 through a connecting piece. The output shaft of the motor 200 is inserted into the lower connecting cone sleeve 320 and is keyed with the lower connecting cone sleeve 320. The connecting piece includes but is not limited to a screw. Figure 1 As shown in the figure, in the embodiment, the inner diameter of the lower connecting cone sleeve 320 gradually decreases along the direction from bottom to top, and the outer diameter of the upper connecting cone sleeve 310 gradually decreases. The lower connecting cone sleeve 320 is inserted into the inner side of the upper connecting cone sleeve 310 from bottom to top.

[0048] In one embodiment of the present application, the power assembly further comprises a base 500. The base 500 is provided with a through installation hole. The motor 200 is installed in the interior of the base 500. The output shaft of the motor 200 extends through the through installation hole to the exterior of the base 500 and is connected with the rotor assembly 100.

[0049] The upper connecting taper sleeve 310 comprises a taper connecting portion 311 and a limiting portion 312. The limiting portion 312 is connected to the outer side edge of the taper connecting portion 311. The taper connecting portion 311 is connected with the lower connecting taper sleeve 320 through the through installation hole. The limiting portion 312 is limited to be clamped to the outer side edge of the through installation hole.

[0050] For example, as shown in Figure 1 and Figure 4 The rotor assembly 100 is located on the upper side of the base 500. The motor 200 is installed in the interior of the base 500. The base 500 is provided with a through installation hole. The output shaft of the motor 200 is sleeved to the inner side of the lower connecting taper sleeve and is connected with the lower connecting taper sleeve 320 through a key. The output shaft of the motor 200 and the lower connecting taper sleeve 320 extend through the through installation hole from the interior of the base 500 to the upper side of the base 500 and are connected with the rotor assembly 100 and the lower connecting taper sleeve 320 respectively.

[0051] Further, the upper connecting taper sleeve 310 comprises a taper connecting portion 311 and a limiting portion 312. The limiting portion 312 comprises a limiting plate. The taper connecting portion 311 is provided with a taper hole for the lower connecting taper sleeve 320 to pass through. For example, the limiting plate extends along the horizontal direction and is arranged on the outer side of the taper connecting portion 311. During installation, the taper connecting portion 311 passes through the through installation hole along the direction from top to bottom and is connected with the lower connecting taper sleeve 320 through insertion. The limiting plate is limited to be lapped on the edge of the through installation hole, or in other words, the limiting plate is lapped on the upper side of the base 500. In this way, on the one hand, the base 500 can support the movement of the upper connecting taper sleeve 310; on the other hand, the through installation hole can be blocked to prevent external dust from entering the base 500, and even the motor 200, through the through installation hole.

[0052] In one embodiment of the present application, a sealing device 600 is arranged between the output shaft of the motor 200 and the through installation hole, the upper connecting taper sleeve 310 and the lower connecting taper sleeve 320.

[0053] More specifically, in one embodiment of the present application, the sealing device 600 comprises a first sealing body 610, a second sealing body 620 and an extension sealing section 630. The first sealing body 610, the second sealing body 620 and the extension sealing section 630 are of an integrated structure. The second sealing body 620 is arranged on the inner side of the first sealing body 610, the extension sealing section 630 is arranged on the inner side of the second sealing body 620, and the first sealing body 610 is supported to the edge of the through installation hole.

[0054] The first sealing body 610 is provided with a first sealing groove 611. The second sealing body 620 is provided with a second sealing groove 621. The limiting part 312 is provided with a first sealing fitting part 313 and a second sealing fitting part 314 at intervals. The first sealing fitting part 313 is sealingly inserted into the first sealing groove 611. The second sealing fitting part 314 is sealingly inserted into the second sealing groove 621. The extended sealing section 630 is sealingly inserted between the conical connecting part 311 and the lower end of the output shaft of the motor 200.

[0055] Specifically, as shown in Figure 1 、 Figure 2 and Figure 4 , the sealing device 600 comprises a first sealing body 610, a second sealing body 620 and an extended sealing section 630, which are of an integrated structure. The first sealing body 610 and the second sealing body 620 are vertically arranged, and the extended sealing section 630 is horizontally arranged. The first sealing body 610 is located near the edge of the through mounting hole, and the first sealing body 610 is provided with a first sealing groove 611. The second sealing body 620 is arranged at intervals on the inner side of the first sealing body 610, and the second sealing body 620 is provided with a second sealing groove 621. The limiting plate of the upper connecting conical sleeve 310 is provided with a first sealing fitting part 313 and a second sealing fitting part 314 at intervals. The first sealing fitting part 313 is adapted to the first sealing groove 611, and the second sealing fitting part 314 is adapted to the second sealing groove 621.

[0056] In the installation process, the first sealing body 610 is supported to the edge of the through mounting hole, and the first sealing fitting part 313 is sealingly inserted into the first sealing groove 611. The second sealing fitting part 314 is sealingly inserted into the second sealing groove 621. The extended sealing section 630 is clamped in the gap between the lower side of the lower connecting conical sleeve 320 and the lower end of the output shaft of the motor 200. Thus, the external dust can be effectively prevented from entering the inside of the motor 200 by the multi-stage sealing form of the labyrinth, and the motor 200 is damaged.

[0057] In an embodiment of the present application, the machine base 500 is provided with a motor mounting bracket 700. The motor 200 is connected with the inner side wall of the machine base 500 through the motor mounting bracket 700.

[0058] Further, in an embodiment of the present application, the motor mounting bracket 700 comprises a connecting plate 710, a supporting plate 720 and a baffle plate 730.

[0059] The support plate 720 is connected with the inner side wall of the base 500 and supports the housing of the motor 200. The baffle plate 730 is connected with the support plate 720, and the baffle plate 730 is arranged outside the housing of the motor 200. One end of the connecting plate 710 is connected with the baffle plate 730, and the other end of the connecting plate 710 is connected with the inner side wall of the base 500.

[0060] As shown in Figure 1 , Figure 5 and Figure 6 , the support plate 720 is transversely welded to the inner side wall of the base 500. The housing of the motor 200 is supported on the upper side of the support plate 720 and is connected with the support plate 720 by bolts. The baffle plate 730 is vertically arranged outside the housing of the motor 200 to protect the housing during the tumbler process. The connecting plate 710 is transversely arranged, one end of which is connected with the inner side wall of the base 500, and the other end of which is connected with the baffle plate 730. The support plate 720 can be a ring-shaped support plate 720, and a plurality of bolts are arranged between the ring-shaped support plate 720 and the support surface of the motor 200. The baffle plate 730 can be a ring-shaped baffle plate 730, and the motor 200 is covered in the inner cavity of the ring-shaped baffle plate 730. A plurality of connecting plates 710 are arranged along the radial direction of the baffle plate 730 to enhance the strength of the motor mounting bracket 700.

[0061] In an embodiment of the present application, the motor mounting bracket 700 further comprises a reinforcing connecting sleeve assembly. The reinforcing connecting sleeve assembly comprises an upper reinforcing connecting sleeve 810 and a lower reinforcing connecting sleeve 820.

[0062] The upper reinforcing connecting sleeve 810 is sleeved outside the housing of the motor 200. Along the direction from bottom to top, the outer diameter of the cross section of the upper reinforcing connecting sleeve 810 gradually increases, and the inner diameter of the cross section of the lower reinforcing connecting sleeve 820 gradually increases. The lower reinforcing connecting sleeve 820 is connected to the outside of the upper reinforcing connecting sleeve 810 by insertion to support the upper reinforcing connecting sleeve 810. The baffle plate 730 is connected with the intermediate connecting section 740. The lower reinforcing connecting sleeve 820 is connected with the intermediate connecting section 740 by fasteners.

[0063] Specifically, as shown in Figure 1 and Figure 3As shown, the reinforced connecting cone sleeve assembly comprises an upper reinforced connecting cone sleeve 810 and a lower reinforced connecting cone sleeve 820. The upper reinforced connecting cone sleeve 810 and the lower reinforced connecting cone sleeve 820 are adapted to enable the upper reinforced connecting cone sleeve 810 to be inserted and supported to the inner side of the lower reinforced connecting cone sleeve 820. Specifically, along the direction from bottom to top, the outer diameter of the upper reinforced connecting cone sleeve 810 gradually increases, and correspondingly, the inner diameter of the lower reinforced connecting cone sleeve 820 gradually increases. The lower reinforced connecting cone sleeve 820 is provided with a connecting end. The intermediate connecting section 740 is connected to the baffle 730. The intermediate connecting section 740 can be welded to the baffle 730 and the connecting plate 710.

[0064] Therefore, in the process of installation, the upper reinforced connecting cone sleeve 810 can be sleeved to the outer side of the motor 200 housing first. Then, the lower reinforced connecting cone sleeve 820 is inserted to the outer side of the upper reinforced connecting cone sleeve 810 from bottom to top, and the outer side wall of the upper reinforced connecting cone sleeve 810 is in contact with the inner side wall of the lower reinforced connecting cone sleeve 820. The connecting end of the lower reinforced connecting cone sleeve 820 is fixedly connected to the intermediate connecting section 740 through a screw.

[0065] In an embodiment of the present application, the motor 200 is a single variable-frequency permanent magnet synchronous motor.

[0066] In the prior art, two fixed-frequency asynchronous motors are usually arranged in the sand making machine to realize the power switching of sand making and shaping of the sand making machine. This power driving form will cause the cost of the sand making machine to be too high, and the energy consumption of the fixed-frequency motor is relatively high. In the power assembly provided by the present application, a single variable-frequency permanent magnet synchronous motor is adopted, which has a simple structure, lower cost, smaller energy consumption and higher efficiency.

[0067] Embodiments of the second aspect of the present application provide a crushing device comprising the power assembly as described above.

[0068] For example, in an embodiment of the present application, the crushing device described above comprises a sand making machine.

[0069] Further, in the crushing device provided by the present application, since it comprises the power assembly as described above, it also has the advantages as described above.

[0070] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A power component, characterized in that, include: Rotor assembly; An electric motor, wherein the output shaft of the electric motor is connected to the rotor assembly via a central connector; An upper connecting tapered sleeve is connected to the rotor assembly; A lower connecting cone sleeve is inserted into and connected to the upper connecting cone sleeve, and the output shaft of the motor is connected to the lower connecting cone sleeve. Along the direction from bottom to top, the inner diameter of the lower connecting cone sleeve gradually decreases, the outer diameter of the upper connecting cone sleeve gradually decreases, and the lower connecting cone sleeve is inserted into the inner side of the upper connecting cone sleeve from bottom to top; The power assembly also includes a base with a through mounting hole. The motor is mounted inside the base, and the motor's output shaft extends through the through mounting hole to the outside of the base and connects to the rotor assembly. The upper connecting cone sleeve includes a tapered connecting part and a limiting part. The limiting part is connected to the outer edge of the tapered connecting part. The tapered connecting part is inserted into the lower connecting cone sleeve through the through mounting hole. The limiting part is positioned and locked at the outer edge of the through mounting hole. A sealing device is provided between the output shaft of the motor and the through mounting hole, the upper connecting cone sleeve and the lower connecting cone sleeve; The sealing device includes a first sealing body, a second sealing body, and an extended sealing section. The first sealing body, the second sealing body, and the extended sealing section are an integral structure. The second sealing body is spaced out and disposed inside the first sealing body. The extended sealing section is disposed inside the second sealing body. The first sealing body is supported to the edge of the through mounting hole. A first sealing groove is formed on the first sealing body, and a second sealing groove is formed on the second sealing body. A first sealing mating body and a second sealing mating body are provided at intervals on the limiting part. The first sealing mating body is sealed and inserted into the first sealing groove, and the second sealing mating body is sealed and inserted into the second sealing groove. The extended sealing section is sealed and inserted between the tapered connecting part and the lower side of the lower connecting tapered sleeve and the output shaft of the motor. The limiting part includes a limiting plate, which extends horizontally and is disposed on the outside of the tapered connecting part. During installation, the tapered connecting part passes through the through-mounting hole from top to bottom and is inserted into the lower connecting tapered sleeve. The limiting plate is limited and overlaps the edge of the through-mounting hole. The limiting plate of the upper connecting tapered sleeve is provided with the first sealing fit and the second sealing fit at intervals.

2. The power assembly according to claim 1, characterized in that, The power assembly also includes a rotor mounting plate. The upper connecting cone sleeve is welded to the rotor assembly. The rotor mounting plate is fastened to the upper connecting cone sleeve via a connector. The lower connecting cone sleeve is fastened to the rotor mounting plate via the connector. The output shaft of the motor passes through the lower connecting cone sleeve and is keyed to the lower connecting cone sleeve.

3. The power assembly according to claim 1, characterized in that, The base is equipped with a motor mounting bracket, and the motor is connected to the inner side wall of the base through the motor mounting bracket.

4. The power assembly according to claim 3, characterized in that, The motor mounting bracket includes a connecting plate, a support plate, and a baffle. The support plate is connected to the inner wall of the base and supports the motor housing. The baffle is connected to the support plate and is positioned to block the outside of the motor housing. One end of the connecting plate is connected to the baffle, and the other end of the connecting plate is connected to the inner wall of the base.

5. The power assembly according to claim 4, characterized in that, The motor mounting bracket also includes a reinforcing connecting tapered sleeve assembly, which comprises an upper reinforcing connecting tapered sleeve and a lower reinforcing connecting tapered sleeve. The upper reinforcing connecting cone sleeve is fitted onto the outside of the motor housing. Along the direction from bottom to top, the outer diameter of the upper reinforcing connecting cone sleeve gradually increases, and the inner diameter of the lower reinforcing connecting cone sleeve gradually increases. The lower reinforcing connecting cone sleeve is inserted into the outside of the upper reinforcing connecting cone sleeve to support the upper reinforcing connecting cone sleeve. An intermediate connecting section is connected to the baffle, and the lower reinforcing connecting cone sleeve is connected to the intermediate connecting section by fasteners.

6. The power assembly according to any one of claims 1 to 5, characterized in that, The motor is a single-frequency variable permanent magnet synchronous motor.

7. A crushing device, characterized in that, Includes the power assembly according to any one of claims 1 to 6.

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