CN108253023A - Bearing at the top of Single-Cylinder Hydraulic Cone Crusher - Google Patents

Abstract

Both there is good wearability, lubricity, absorb shock resistance and higher compression strength the present invention relates to a kind of, bearing at the top of Single-Cylinder Hydraulic Cone Crusher with good economy again, top bearing be tapered sleeve structure upper end be flange plate structure, lower part is tapered sleeve structure and is cast using gray cast iron, tapered sleeve inner wall is provided with helix oil groove.Advantage：First, not only having realized the purpose of top bearing self-lubricating, but also play the role of from shock absorbing substantially reducing, not only the spoilage of top bearing, but also copper sheathing uniform force inside and outside guarantee（And inside and outside copper sheathing can be made to have rational gap with eccentric shaft, main shaft, meet working condition requirement）；Second is that processing cost is low, easily replaces, achieve unexpected economic benefit and social benefit.

Description

Single cylinder hydraulic cone crusher top bearing

technical field

The invention relates to a top bearing of a single-cylinder hydraulic cone crusher with good wear resistance, lubricity, shock absorption and high compressive strength, and good economy, belonging to the field of special bearing manufacturing.

Background technique

At present, in the single-cylinder hydraulic cone crusher, the top bearing is made of bearing steel. Its disadvantages: Although the bearing steel has high and uniform hardness and wear resistance, as well as a high elastic limit, but because the bearing steel itself does not have lubricity and shock absorption, it is used to make the top bearing of the single-cylinder cone crusher. At this time, neither self-lubrication nor self-shock elimination can be achieved, so it is very easy to cause damage to the top bearing, and the replacement cost is high.

Contents of the invention

Design purpose: On the basis of the background technology, design a single-cylinder hydraulic cone crusher top bearing that not only has good wear resistance, lubricity, shock absorption and high compressive strength, but also has good economy.

Design scheme: In order to achieve the above design purpose. In terms of structural design of the present invention: 1. The top bearing is a tapered sleeve structure, the upper end is a flange structure, the lower part is a tapered sleeve structure and the design is cast from gray cast iron, which is one of the technical characteristics of the present invention. The purpose of this design is: First, because the flange plate and the taper sleeve in the top bearing of this application are integrally cast and formed, the flange plate is used as the fixed carrier of the taper sleeve type top bearing, which can not only firmly fix the taper sleeve, but also can Ensure the concentricity of the taper sleeve; Second, because the carbon in gray cast iron is mainly distributed in the metal matrix in the form of flake graphite, its fracture is dark gray, so gray cast iron can be regarded as the steel matrix plus flake graphite. Because graphite in gray cast iron exists in flake form, it not only has good wear resistance, lubricity, shock absorption, machinability and high compressive strength, but also has low processing cost and is easy to replace. , and can ensure that the inner and outer copper sleeves are evenly stressed (and can make the inner and outer copper sleeves have a reasonable gap with the eccentric shaft and the main shaft to meet the requirements of the working conditions). 2. The design of the right helical oil groove on the inner wall of the taper sleeve is two of technical characterictics of the present invention. The purpose of this design is: the right helical oil groove not only plays the role of lubricating and cooling the top bearing, but also plays the role of transporting grinding impurities, so that the working surface of the top bearing is in a clean oil lubrication state, greatly improving Improved top bearing life.

Technical solution: A top bearing for a single-cylinder hydraulic cone crusher. The top bearing is a taper sleeve structure. The upper end is a flange structure, and the lower part is a taper sleeve structure. It is made of gray cast iron. The inner wall of the taper sleeve has a helical oil groove. .

Compared with the background technology, the present invention not only realizes the self-lubricating purpose of the top bearing, but also plays the role of self-shock elimination, which not only greatly reduces the damage rate of the top bearing, but also ensures that the inner and outer copper sleeves are evenly stressed (and can make the The inner and outer copper sleeves have a reasonable gap with the eccentric shaft and the main shaft to meet the requirements of the working conditions); second, the processing cost is low, easy to replace, and unexpected economic and social benefits have been achieved.

Description of drawings

Figure 1 is a schematic diagram of the top bearing applied to a single-cylinder hydraulic cone crusher.

Fig. 2 is a schematic cross-sectional structural view of the top bearing.

Fig. 3 is a cross-sectional enlarged schematic view of part A-A in Fig. 2 .

Detailed ways

Embodiment 1: with reference to accompanying drawing 1-3. A top bearing for a single-cylinder hydraulic cone crusher. The top bearing 1 is a taper sleeve structure, the upper end is a flange structure, and the lower part is a taper sleeve structure and is cast from gray cast iron. The inner wall of the taper sleeve is provided with a spiral oil groove. Gray cast iron adopts HT250, and its HT250 fracture is dark gray. The taper 2 of the outer wall of the taper sleeve is 7:100mm. The pitch of the helical oil groove is 120mm right helical and the starting point of the helix is at the end face 3 of the flange, and the same right helical oil groove is provided opposite the end face 3 of the flange. The radian of the bottom and edge of the helical oil groove is R3mm, and the parallel opening angle is 90±0.5 degrees.

It should be understood that: although the above-mentioned embodiments have made more detailed text descriptions to the design ideas of the present invention, these text descriptions are only simple text descriptions to the design ideas of the present invention, rather than limitations to the design ideas of the present invention. The combination, addition or modification of the design concept of the present invention all fall within the protection scope of the present invention.

Claims (5)

1. A top bearing for a single-cylinder hydraulic cone crusher, characterized in that: the top bearing (1) is a taper sleeve structure, the upper end is a flange structure, the lower part is a taper sleeve structure and is made of gray cast iron, and the inner wall of the taper sleeve is open. There are helical oil grooves. 2. The top bearing of a single-cylinder hydraulic cone crusher according to claim 1, characterized in that: the taper (2) of the outer wall of the taper sleeve is 7:100mm. 3. The top bearing of a single-cylinder hydraulic cone crusher according to claim 1, characterized in that: the pitch of the helix oil groove is 120 mm right helix and the starting point of the helix is at the end face of the flange (3), and at the end of the flange The same right-hand helical oil groove is provided on the opposite side of the disk end surface (3). 4. The top bearing of a single-cylinder hydraulic cone crusher according to claim 1 or 3, characterized in that: the radian of the bottom and edge of the helical oil groove is R3mm, and the parallel opening angle is 90±0.5 degrees. 5. The top bearing of single-cylinder hydraulic cone crusher according to claim 1, characterized in that: gray cast iron is made of HT250, and the fracture surface of HT250 is dark gray.