Limiting bush embedding structure

Abstract

The utility model discloses a limiting bush embedding structure which comprises an outer sleeve and an inner sleeve. The outer sleeve comprises an abutting part abutting against the end face of the main center shaft and a cylinder part used for installing the connecting shaft, and the abutting part and the cylinder part are concavely provided with installation parts used for installing the inner sleeve along the inner sides of the abutting part and the cylinder part; the inner sleeve is embedded in the mounting part, and a first connecting piece connected to the abutting part and a second connecting piece connected to the inner side of the cylinder part are arranged at the two ends of the inner sleeve correspondingly; the mounting part comprises a first concave part arranged on the abutting part and close to the main center shaft and a second concave part arranged on the inner circumference of the cylinder part, the first connecting piece is used for being embedded in the first concave part, the second connecting piece is used for being embedded in the second concave part, the outer sleeve is made of metal materials, and the inner sleeve is made of rubber materials. The first connecting piece and the second connecting piece which are arranged on the inner sleeve are used for being embedded in the mounting part in the outer sleeve, so that the inner sleeve and the outer sleeve are connected into a whole to be used for connecting the main center shaft and the connecting shaft, enough supporting force is provided, and meanwhile friction loss is reduced.

Description

Technical Field

[0001] The utility model relates to the field of bushings, in particular to a limiting bushing embedding structure. Background Art

[0002] Raymond mills are commonly used grinding equipment. With their three-dimensional structure, they occupy a small area and offer a strong system-wide capability. From bulk material to finished powder, they form a self-contained production system. They utilize a sealed gearbox and pulleys for smooth transmission and reliable operation. They are suitable for preparing various mineral and coal powders, such as raw ore, gypsum, and coal.

[0003] At present, for the purpose of easy replacement, connecting shafts are generally installed on both sides of the main center shaft of the Raymond mill through bushings. At the same time, grinding rollers are usually provided on the connecting shafts. The rotation of the main center shaft drives the grinding rollers on both sides to rotate, so as to grind the stone fed by the sleeve scraper frame in cooperation with the grinding ring and grinding roller to obtain ore powder.

[0004] However, since the Raymond mill needs to withstand huge pressure when crushing ore, the all-steel bushing will not only wear itself, but also cause a certain degree of wear on the main center shaft and connecting shaft, which is very expensive; and the rubber bushing cannot provide sufficient support. Utility Model Content

[0005] Based on this, the purpose of the present invention is to provide a limiting bushing embedded structure, which aims to solve the current problem that since the Raymond mill needs to withstand huge pressure when crushing ore, the all-steel bushing will not only wear itself, but also cause a certain degree of wear on the main center shaft and connecting shaft, which is costly; and the rubber bushing cannot provide sufficient supporting force.

[0006] To achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a position-limiting bushing embedding structure, the position-limiting bushing embedding structure comprising an outer sleeve and an inner sleeve;

[0007] The outer sleeve includes an abutting portion abutting against the end surface of the main central shaft and a cylindrical portion for mounting the connecting shaft, wherein the abutting portion and the cylindrical portion are recessed along their inner sides with mounting portions for mounting the inner sleeve;

[0008] An inner sleeve is embedded in the recessed portion, and two ends of the inner sleeve are respectively provided with a first connecting piece connected to the abutting portion and a second connecting piece connected to the inner side of the cylindrical portion;

[0009] Among them, the mounting portion includes a first recessed portion arranged on the abutting portion close to the main center axis, and a second recessed portion arranged on the inner circumference of the cylindrical portion. The first connecting piece is used to embed the first recessed portion, and the second connecting piece is used to embed the second recessed portion. The outer sleeve is made of metal and the inner sleeve is made of rubber.

[0010] In summary, according to the present invention, a limiting bushing embedding structure is proposed. By using a first connecting member and a second connecting member provided on the inner sleeve to embed in the mounting portion of the outer sleeve, the inner sleeve and the outer sleeve are connected as a whole, and are then used to connect the main center axis and the connecting shaft. While providing sufficient support force, friction loss is also reduced. Specifically, the outer sleeve includes an abutting portion that abuts against the end face of the main center axis, and a cylindrical portion for mounting the connecting shaft. The abutting portion and the cylindrical portion are recessed along their inner sides with a mounting portion for mounting the inner sleeve. The mounting portion includes a first recessed portion provided near the main center axis on the abutting portion, and a second recessed portion provided on the inner circumference of the cylindrical portion. The inner sleeve is embedded in the recessed portion. The two ends of the inner sleeve are respectively provided with a first connecting member connected to the abutting portion and a second connecting member connected to the inner side of the cylindrical portion. The first connecting member is used to embed in the first recessed portion, and the second connecting member is used to embed in the second recessed portion, so that the inner sleeve is embedded in the outer sleeve. At the same time, the outer sleeve is made of metal and the inner sleeve is made of rubber. While the outer sleeve provides sufficient support force, the inner sleeve reduces wear.

[0011] According to one aspect of the above technical solution, the first recessed portion includes a first end face, a guide groove extending along the end face of the abutting portion toward the cylindrical portion, and a transverse groove arranged in the abutting portion, and the guide groove and the transverse groove are arranged around the center of the cylindrical portion.

[0012] According to one aspect of the above technical solution, the height of the first end surface is lower than the end surface of the abutting portion.

[0013] According to one aspect of the above technical solution, the transverse groove is provided in the first end surface.

[0014] According to one aspect of the above technical solution, the second recessed portion includes a second end face, a passing groove arranged along the radial direction of the cylindrical portion, and a triangular groove arranged in the cylindrical portion, and the second end face is lower than the inner circumferential end face of the cylindrical portion.

[0015] According to one aspect of the above technical solution, the first connecting member includes a first connecting portion obliquely connected to the inner sleeve, and an embedding portion provided on the first connecting portion, the first connecting portion is configured to imitate the guide groove, and the embedding portion is provided in the transverse groove.

[0016] According to one aspect of the above technical solution, the second connecting member includes a second connecting portion and a hooking portion provided on the second connecting portion, and the hooking portion is embedded in the triangular groove.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic structural diagram of a position limiting bushing in one embodiment of the present utility model;

[0020] Figure 2 A cross-sectional view of a limiting bushing in one embodiment of the present utility model;

[0021] Figure 3 This is a schematic structural diagram of a jacket in one embodiment of the present invention;

[0022] Figure 4 A cross-sectional view of a jacket in one embodiment of the present invention;

[0023] Figure 5 This is a structural diagram of the inner sleeve in one embodiment of the utility model;

[0024] Figure 6 It is a cross-sectional view of the inner sleeve in one embodiment of the present invention.

[0025] Component symbol description in the attached figure:

[0026] The outer sleeve 100, the abutting portion 110, the cylindrical portion 120, the first recessed portion 130, the first end face 131, the guide groove 132, the transverse groove 133, the second recessed portion 140, the second end face 141, the through groove 142, the triangular groove 143, the inner sleeve 200, the first connecting member 210, the first connecting portion 211, the embedded portion 212, the second connecting member 220, the second connecting portion 221, the hook portion 222, and the limiting bushing 300. DETAILED DESCRIPTION

[0027] To make the objectives, features, and advantages of the present invention more readily apparent, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The accompanying drawings illustrate several embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may also be an element centered thereon. The terms "vertical", "horizontal", "left", "right", "up", "down" and similar expressions used herein are for illustrative purposes only and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0029] In this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," and the like should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. A person of ordinary skill in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0030] See also Figures 1-6 , which is a schematic diagram of a position limiting bushing embedded structure provided in one embodiment of the present invention, wherein the position limiting bushing 300 includes an outer sleeve 100 and an inner sleeve 200, wherein:

[0031] In order to solve the problem that the all-steel bushings in the Raymond mill currently cause a certain degree of wear to the main center shaft and the connecting shaft, and the rubber bushings cannot provide sufficient supporting force, the present application proposes a method of combining an all-steel outer sleeve 100 and a rubber inner sleeve 200. While the outer sleeve 100 provides supporting force, the inner sleeve 200 can reduce wear and extend the service life of the bushing.

[0032] In order to provide supporting force to the connecting shaft, a sleeve 100 is provided on the main center shaft. The sleeve 100 includes a supporting portion 110 that abuts against the end face of the main center shaft, and a cylindrical portion 120 for installing the connecting shaft. The supporting portion 110 mentioned in this embodiment is provided at one end of the cylindrical portion 120, and is connected to the outer periphery of the cylindrical portion 120, and is arranged perpendicular to the cylindrical portion 120. The supporting portion 110 is used to abut against the main center shaft.

[0033] Furthermore, in order to install the inner sleeve 200 inside the outer sleeve 100, the abutting portion 110 and the cylindrical portion 120 have recessed mounting portions along their inner sides for mounting the inner sleeve 200. The mounting portions include a first recessed portion 130 provided on the abutting portion 110 near the main central axis, and a second recessed portion 140 provided on the inner circumference of the cylindrical portion 120. The ends of the inner sleeve 200 are respectively embedded in the first recessed portion 130 and the second recessed portion 140, so that it is located inside the outer sleeve 100, thereby reducing wear on the bushing and the connecting shaft.

[0034] Furthermore, the first recessed portion 130 includes a first end surface 131, a guide groove 132 extending along the end surface of the abutting portion 110 toward the cylindrical portion 120, and a transverse groove 133 provided within the abutting portion 110. The guide groove 132 and transverse groove 133 surround the abutting portion 110 and the cylindrical portion 120. To prevent the abutting portion 110 from being misaligned with the main central axis during bushing installation, the height of the first end surface 131 is lower than the height of the end surface of the abutting portion 110 to facilitate the embedding of the inner sleeve 200. When the inner sleeve 200 is embedded in the first recessed portion 130, the end surface of the inner sleeve 200 will be flush with the end surface of the abutting portion 110. The guide groove 132 facilitates the installation of the inner sleeve 200 and the first recessed portion 130, facilitating the embedding of the inner sleeve 200 into the transverse groove 133.

[0035] It is worth noting that one end of the inner sleeve 200 is connected to the first recessed portion 130, and the other end is connected to the second recessed portion 140 on the inner circumference of the cylindrical portion 120. The second recessed portion 140 includes a second end surface 141, a through groove 142 arranged radially along the cylindrical portion 120, and a triangular groove 143 provided within the cylindrical portion 120. The second end surface 141 is lower than the inner circumferential end surface of the cylindrical portion 120. Similarly, to ensure the smoothness of the inner circumference of the cylindrical portion 120, the height of the second end surface 141 is lower than that of the inner circumferential end surface to facilitate the insertion of the inner sleeve 200. The through groove 142 is arranged radially along the cylindrical portion 120, perpendicular to the connection direction of the connecting shaft, reducing the stress on the inner sleeve 200 and preventing it from falling out of the second recessed portion 140. Furthermore, the provision of the triangular groove 143 enhances the stability of the connection between the inner sleeve 200 and the second recessed portion 140.

[0036] In order to cooperate with the first recessed portion 130 and the second recessed portion 140, the inner sleeve 200 has a first connecting piece 210 connected to the abutting portion 110 and a second connecting piece 220 connected to the inner side of the cylindrical portion 120 at both ends, respectively. The first connecting piece 210 is used to embed the first recessed portion 130, and the second connecting piece 220 is used to embed the second recessed portion 140.

[0037] The first connector 210 includes a first connecting portion 211 that is obliquely connected to the inner sleeve 200, and an embedded portion 212 disposed on the first connecting portion 211. The first connecting portion 211 is configured to align with the guide groove 132, and the embedded portion 212 is disposed within the transverse groove 133. When installing the first connector 210, the embedded portion 212 can be slid along the guide groove 132 until it fits within the transverse groove 133. At this point, the obliquely disposed first connecting portion 211 is disposed on the guide groove 132. At this point, the inner sleeve 200, with one end of the first connector 210 embedded within the abutment portion 110, fills the first recess 130.

[0038] The second connector 220 includes a second connecting portion 221 and a hook portion 222 disposed on the second connecting portion 221. The hook portion 222 is embedded in the triangular groove 143. Because the inner sleeve 200 is made of rubber, the hook portion 222 is squeezed through the groove 142 and is located in the triangular groove 143. Since the hook portion 222 is configured to conform to the triangular groove 143, the connection stability between the inner sleeve 200 and the outer sleeve 100 is improved.

[0039] It should be emphasized that the connecting corners of the first recessed portion 130 and the second recessed portion 140 are rounded to reduce wear between the outer sleeve 100 and the inner sleeve 200 .

[0040] In summary, according to the present invention, a limiting bushing embedding structure is proposed. By using a first connecting member and a second connecting member provided on the inner sleeve to embed in the mounting portion of the outer sleeve, the inner sleeve and the outer sleeve are connected as a whole, and are then used to connect the main center axis and the connecting shaft. While providing sufficient support force, friction loss is also reduced. Specifically, the outer sleeve includes an abutting portion that abuts against the end face of the main center axis, and a cylindrical portion for mounting the connecting shaft. The abutting portion and the cylindrical portion are recessed along their inner sides with a mounting portion for mounting the inner sleeve. The mounting portion includes a first recessed portion provided near the main center axis on the abutting portion, and a second recessed portion provided on the inner circumference of the cylindrical portion. The inner sleeve is embedded in the recessed portion. The two ends of the inner sleeve are respectively provided with a first connecting member connected to the abutting portion and a second connecting member connected to the inner side of the cylindrical portion. The first connecting member is used to embed in the first recessed portion, and the second connecting member is used to embed in the second recessed portion, so that the inner sleeve is embedded in the outer sleeve. At the same time, the outer sleeve is made of metal and the inner sleeve is made of rubber. While the outer sleeve provides sufficient support force, the inner sleeve reduces wear.

[0041] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0042] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A limit bushing embedding structure, characterized in that: The position limiting bushing embedding structure includes an outer sleeve and an inner sleeve; The outer sleeve includes an abutting portion abutting against the end surface of the main central shaft and a cylindrical portion for mounting the connecting shaft, wherein the abutting portion and the cylindrical portion are recessed along their inner sides with mounting portions for mounting the inner sleeve; An inner sleeve is embedded in the mounting portion, and two ends of the inner sleeve are respectively provided with a first connecting piece connected to the abutting portion and a second connecting piece connected to the inner side of the cylindrical portion; Among them, the mounting portion includes a first recessed portion arranged on the abutting portion close to the main center axis, and a second recessed portion arranged on the inner circumference of the cylindrical portion. The first connecting piece is used to embed the first recessed portion, and the second connecting piece is used to embed the second recessed portion. The outer sleeve is made of metal and the inner sleeve is made of rubber.

2. The limiting bushing embedding structure according to claim 1, characterized in that: The first recessed portion includes a first end face, a guide groove extending along the end face of the abutting portion toward the cylindrical portion, and a transverse groove provided in the abutting portion. The guide groove and the transverse groove are provided around the center of the cylindrical portion.

3. The limiting bushing embedding structure according to claim 2, characterized in that: The first end surface is lower than the end surface of the abutting portion.

4. The limiting bushing embedding structure according to claim 3, characterized in that: The transverse groove is provided in the first end surface.

5. The limiting bushing embedding structure according to claim 1, characterized in that: The second recessed portion includes a second end surface, a through groove arranged along the radial direction of the cylindrical portion, and a triangular groove arranged in the cylindrical portion, and the second end surface is lower than the inner circumferential end surface of the cylindrical portion.

6. The limiting bushing embedding structure according to claim 1, characterized in that: The first connecting member includes a first connecting portion obliquely connected to the inner sleeve, and an embedding portion provided on the first connecting portion. The first connecting portion is configured to conform to the guide groove, and the embedding portion is provided in the transverse groove.

7. The limiting bushing embedding structure according to claim 1, characterized in that: The second connecting member includes a second connecting portion and a hooking portion provided on the second connecting portion, wherein the hooking portion is embedded in the triangular groove.

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