Novel eccentric bushing and crusher with same

Abstract

The utility model relates to a novel eccentric bushing and a crusher with the same, which are used for solving the technical problem that the eccentric bushing in the prior art is easy to ablate. The novel eccentric bushing comprises an eccentric bushing main body and an outer sleeve, the outer sleeve is sleeved outside the eccentric bushing main body, the outer sleeve and the eccentric bushing main body are fixedly connected into a whole through a key, and the hardness of the outer sleeve is higher than that of the eccentric bushing main body. The hardness of the outer sleeve is higher than that of the eccentric sleeve main body, so that compared with the eccentric sleeve main body, the outer sleeve is not easy to damage. Meanwhile, the key for fixedly connecting the outer sleeve and the eccentric sleeve main body is detachable, so that when the outer sleeve is ablated or scrapped due to other factors, only the outer sleeve needs to be replaced, and the eccentric sleeve main body does not need to be replaced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of mine machinery, concretely relates to a novel eccentric sleeve and a crusher with the novel eccentric sleeve. BACKGROUND

[0002] In the industry of crushing materials such as water and electricity, mine, aggregate, etc., the conical crusher is widely used. The eccentric sleeve is a key part of single-cylinder cone. The traditional eccentric sleeve is made of copper, which is designed as a whole and processed after forging. It is found in the use process that the eccentric copper sleeve is easy to be ablated, resulting in the scrap of the eccentric sleeve, and the on-site replacement cost is high. Therefore, the existing eccentric sleeve needs to be improved in design. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a novel eccentric sleeve to solve the technical problem that the eccentric sleeve is easy to be ablated in the prior art, and also aims at providing a crusher with the novel eccentric sleeve.

[0004] Therefore, the utility model of a novel eccentric sleeve adopts the following technical scheme:

[0005] A novel eccentric sleeve comprises an eccentric sleeve main body and an outer sleeve, the outer sleeve is sleeved on the outside of the eccentric sleeve main body, the outer sleeve and the eccentric sleeve main body are fixedly connected as a whole through a key, and the hardness of the outer sleeve is higher than that of the eccentric sleeve main body.

[0006] Further, the outer periphery of the eccentric sleeve main body is a two-section cylindrical surface, the diameter of the upper section cylindrical surface is greater than that of the lower section cylindrical surface, the outer sleeve is sleeved on the periphery of the lower section cylindrical surface, and the upper end surface of the outer sleeve abuts against the shaft shoulder between the lower section cylindrical surface and the upper section cylindrical surface.

[0007] Further, the outer diameter of the outer sleeve is greater than that of the upper section cylindrical surface, and the outer periphery of the outer sleeve protrudes from the upper section cylindrical surface.

[0008] Further, the wall thickness of the outer sleeve is uniform, and the wall thickness of the eccentric sleeve main body gradually increases from the thin-walled side to the thick-walled side.

[0009] Further, the outer peripheries of the upper section cylindrical surface and the lower section cylindrical surface share a common central axis.

[0010] Further, the outer periphery of the eccentric sleeve main body is a multi-section cylindrical surface with gradually increasing outer diameters, the outer sleeve is sleeved on the cylindrical surface with the smallest diameter, and one end of the outer sleeve abuts against the shaft shoulder between the corresponding two cylindrical surfaces.

[0011] Further, the eccentric sleeve main body is made of copper, and the outer sleeve is made of 42CrMo material and is subjected to quenching and tempering treatment with HB277-302.

[0012] The utility model discloses a crusher with novel eccentric sleeve adopts the following technical scheme:

[0013] A crusher with novel eccentric sleeve, including novel eccentric sleeve, novel eccentric sleeve includes eccentric sleeve main part and outer sleeve, the outer sleeve is covered the outside of eccentric sleeve main part, the outer sleeve with eccentric sleeve main part is fixedly connected as an organic whole through the key, the hardness of outer sleeve is higher than the hardness of eccentric sleeve main part.

[0014] Further, the outer periphery of the eccentric sleeve main body is a two-section cylindrical surface, and the diameter of the upper section cylindrical surface is greater than the diameter of the lower section cylindrical surface, the outer sleeve is sleeved on the periphery of the lower section cylindrical surface, and the upper end surface of the outer sleeve abuts against the shaft shoulder between the lower section cylindrical surface and the upper section cylindrical surface.

[0015] Further, the outer diameter of the outer sleeve is greater than the outer diameter of the upper section cylindrical surface, and the outer periphery of the outer sleeve protrudes from the upper section cylindrical surface.

[0016] Further, the wall thickness of the outer sleeve is uniform, and the wall thickness of the eccentric sleeve main body gradually increases from the thin-walled side to the thick-walled side.

[0017] Further, the outer peripheries of the upper section cylindrical surface and the lower section cylindrical surface share a common central axis.

[0018] Further, the outer periphery of the eccentric sleeve main body is a multi-section cylindrical surface with gradually increasing outer diameters, the outer sleeve is sleeved on the cylindrical surface with the smallest diameter, and one end of the outer sleeve abuts against the shaft shoulder between the corresponding two cylindrical surfaces.

[0019] Further, the eccentric sleeve main body is made of copper, and the outer sleeve is made of 42CrMo material and is subjected to quenching and tempering treatment with HB277-302.

[0020] Compared with the prior art, the utility model has the advantages and beneficial effects that:

[0021] In the utility model, the hardness of the outer sleeve is higher than the hardness of the eccentric sleeve main body, so the outer sleeve is less likely to be damaged compared with the eccentric sleeve main body. Meanwhile, the key for fixedly connecting the outer sleeve and the eccentric sleeve main body is detachable, so when the outer sleeve is ablated or scrapped due to other factors, only the outer sleeve needs to be replaced, and the eccentric sleeve main body does not need to be replaced.

[0022] Further, the outer sleeve is a sleeve with uniform wall thickness, so after the outer sleeve and the eccentric sleeve main body are fixedly connected through the key, the wall thickness of the whole eccentric sleeve gradually increases from the thin-walled side to the thick-walled side, meeting the use requirements of the eccentric sleeve.

[0023] The additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description of embodiments of the present application, which will be described with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description of embodiments, taken in conjunction with the accompanying drawings, in which:

[0025] Figure 1 is a structural schematic view of an eccentric sleeve in a crusher in the prior art;

[0026] Figure 2 is a structural schematic view of an embodiment one of the eccentric sleeve in the crusher with the novel eccentric sleeve of the present application;

[0027] Figure 3 is a sectional view of the eccentric sleeve main body;

[0028] Figure 4 is a top view of the eccentric sleeve main body;

[0029] Figure 5 is a structural schematic view of the outer sleeve;

[0030] Figure 6 is a structural schematic view of an embodiment two of the eccentric sleeve in the crusher with the novel eccentric sleeve of the present application.

[0031] Wherein: 1, eccentric sleeve main body; 2, outer sleeve; 3, key; 4, first key groove; 5, second key groove. DETAILED DESCRIPTION

[0032] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and should not be understood as limiting the present application.

[0033] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0034] Embodiment one of the crusher with the novel eccentric sleeve of the present application:

[0035] The utility model discloses a crusher with novel eccentric sleeve Figures 2 to 5 The novel eccentric sleeve includes an eccentric sleeve body 1 and an outer sleeve 2, the side wall thickness of the eccentric sleeve body 1 is not constant, but gradually increases from the thin wall side to the thick wall side. The center line of rotation of the eccentric sleeve body 1 is O1, and the center axis of the outer peripheral surface of the eccentric sleeve body 1 is O2.

[0036] The outer peripheral surface of the eccentric sleeve body 1 is a two-section cylindrical surface, the upper section cylindrical surface and the lower section cylindrical surface are both centered on O2, and the diameter of the upper section cylindrical surface is greater than the diameter of the lower section cylindrical surface. The outer sleeve 2 is sleeved on the outer periphery of the lower section cylindrical surface, and the upper end of the outer sleeve 2 abuts against the shaft shoulder between the lower section cylindrical surface and the upper section cylindrical surface. The outer sleeve 2 and the eccentric sleeve body 1 are connected and fixed through a key 3.

[0037] In this embodiment, the outer diameter of the outer sleeve 2 is greater than the outer diameter of the upper section cylindrical surface, so that after assembly is completed, the outer sleeve 2 partially protrudes from the upper section cylindrical surface.

[0038] The outer wall of the lower section cylindrical surface is provided with a first key groove 4, and the inner wall of the outer sleeve 2 is provided with a second key groove 5, the first key groove 4 and the second key groove 5 are shape-fitted, so that the key 3 is arranged between the two to realize fixed connection of the eccentric sleeve body 1 and the outer sleeve 2.

[0039] It should be emphasized that the outer sleeve 2 is a sleeve with uniform wall thickness, so that after the outer sleeve 2 is fixed as a whole with the eccentric sleeve body 1 through the key 3, the wall thickness of the whole eccentric sleeve gradually increases from the thin wall side to the thick wall side, which meets the use requirement of the eccentric sleeve.

[0040] The hardness of the outer sleeve 2 is higher than the hardness of the eccentric sleeve body 1, so that compared with the eccentric sleeve body 1, the outer sleeve 2 is not easy to be damaged. Meanwhile, when the outer sleeve 2 is ablated or scrapped due to other factors, only the outer sleeve 2 needs to be replaced, and the eccentric sleeve body 1 does not need to be replaced. Specifically, the eccentric sleeve body 1 is made of copper material, and the outer sleeve 2 is made of 42CrMo material and is subjected to quenching and tempering treatment HB277-302.

[0041] Of course, it can be understood that in other embodiments, the outer sleeve 2 can also be made of other materials or be subjected to special post-treatment, as long as the strength of the outer sleeve 2 is higher than the strength of the eccentric sleeve body 1.

[0042] Embodiment two of the crusher with the novel eccentric sleeve of the utility model:

[0043] The difference between embodiment two and embodiment one is that the crusher is a multi-cylinder cone crusher, the eccentric sleeve body 1 is a three-section cylindrical surface structure, and the diameters of the three-section cylindrical surfaces gradually increase. The outer sleeve 2 is sleeved on the cylindrical surface with the smallest diameter in the eccentric sleeve body 1, and the end surface of the outer sleeve 2 abuts against the shaft shoulder at the lower end of the cylindrical surface with the smallest diameter.Figure 6 .

[0044] The embodiment of the novel eccentric sleeve of the utility model:

[0045] The specific structure of the novel eccentric sleeve of the utility model is the same as that of the novel eccentric sleeve in the embodiment of the crusher with the novel eccentric sleeve of the utility model, and will not be repeated here.

Claims

1. A novel eccentric sleeve characterized in that: The eccentric sleeve body and the outer sleeve are connected as a whole by key fixing, the hardness of the outer sleeve is higher than that of the eccentric sleeve body, the outer periphery of the eccentric sleeve body is a two-section cylindrical surface, the diameter of the upper section is larger than that of the lower section, the outer sleeve is sleeved on the outer periphery of the lower section, and the upper end surface of the outer sleeve abuts against the shaft shoulder between the lower section and the upper section.

2. A novel eccentric sleeve as claimed in claim 1, wherein: The outer diameter of the outer sleeve is larger than that of the upper section, and the outer periphery of the outer sleeve protrudes from the upper section.

3. A novel eccentric sleeve as claimed in claim 2, wherein: The wall thickness of the outer sleeve is uniform, and the wall thickness of the eccentric sleeve body gradually increases from the thin-walled side to the thick-walled side.

4. A novel eccentric sleeve as claimed in claim 3, wherein: The outer peripheries of the upper section and the lower section share a common central axis.

5. A new eccentric sleeve as claimed in claim 1, wherein: The outer periphery of the eccentric sleeve body is a multi-section cylindrical surface with gradually increasing outer diameters, the outer sleeve is sleeved on the cylindrical surface with the smallest diameter, and one end of the outer sleeve abuts against the shaft shoulder between the corresponding two cylindrical surfaces.

6. A new eccentric sleeve according to any one of claims 1 to 5, characterized in that: The eccentric sleeve body is made of copper, the outer sleeve is made of 42CrMo material, and the outer sleeve is subjected to quenching and tempering treatment with HB277-302.

7. A crusher having a novel eccentric sleeve characterised in that: The new eccentric sleeve comprises the new eccentric sleeve as claimed in any one of claims 1 to 6.

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