With the development of China's crusher industry, there are more and more crushers of different types and models, but the spring cone crusher is undoubtedly the most eye-catching. Because it has large crushing force, high efficiency, high processing capacity, low operating cost, convenient adjustment, economical use, etc. With the development of China's crusher industry, there are more and more crushers of different types and models, but the spring cone crusher Undoubtedly the most eye-catching. Because of its large crushing power, high efficiency, high processing capacity, low operating cost, convenient adjustment, and economical use, it is widely used in medium and fine crushing systems of mines. According to statistics, the current sales volume of spring cone crusher has ranked first in the country. Chopping Knife,Powder Steel Chef Knife,Powder Steel Santoku Knife,Powder Steel Knife YANGJIANG TRI-WIN INDUSTRY & TRADE CO.,LTD , https://www.triwintableware.com
However, even the best machine can not be perfect, it also requires the user's maintenance and my maintenance. We know that because the cone crusher is always in the shock working load state of 360 degree rotation cycle, it is inevitable that some faults will occur. The technicians of Shanghai Yongli Road and Bridge specially analyzed and analyzed the common faults and causes of several spring cone breaks, and Give reasonable treatment measures to facilitate the daily maintenance and overhaul of the customer. The following is a specific analysis:
1 "Speed" analysis and processing The cone crusher has two important moving parts: the space swinging crushing cone and the eccentric shaft. The axis of the crushing cone intersects the centerline of the body at the center of the spherical bearing. When the crusher is running, the axis of the crushing cone is driven by the rotation of the eccentric bushing to make a conical surface movement around the center line of the body. At the same time, under the action of the friction generated by the gravity of the self and the main shaft, the crushing cone makes a relative rotational motion around its own axis, and the center point of its motion remains stationary during the movement of the crushing cone. This shows that. The rotary motion of the crushing cone is composed of traction motion and relative motion, and its absolute rotation can promote the uniform particle size of the crushed product and reduce the wear of the liner. However, the number of revolutions of this absolute rotation should not be too high, generally not more than 15 rev / min, otherwise. Will destroy the normal operation of the crusher, causing "speed" failure. The main reasons are as follows:
(1) The coincidence accuracy of the cone axis and the inner diameter of the taper sleeve is the key factor determining whether the crusher produces a "flying" phenomenon. The axis of the shaft of the moving cone and the taper sleeve is not completely coincident in actual use, and even the space parallel is not easy to achieve. The factors affecting the spatial coincidence accuracy of the two-axis line are the height of the actual installation of the spherical tile, the matching clearance of the vertical axis and the taper sleeve, the matching clearance of the eccentric shaft and the straight copper sleeve, and the radial interaction between the spherical tile seat and the body. The wear of the spherical and spherical tiles, the wear of the spherical tiles and the plane of the fuselage support.
(2) The clearance between the main shaft of the moving cone and the taper sleeve is too small. There are two main factors here: First, the newly installed tapered sleeve is not adjusted according to the regulations when adjusting the gap (the upper edge is 3~4mm); the second is passed After a period of operation, due to insufficient lubrication, the cone sleeve is overheated and contracted.
(3) Manufacturing error of components, such as: cone error of vertical shaft or taper sleeve, eccentricity error of eccentric shaft, and surface roughness of shaft and sleeve will lead to local contact and friction between spindle and taper sleeve , speed up the rotation of the moving cone.
(4) The lubricating oil quantity is insufficient or not clean, resulting in poor lubrication of the friction surfaces of the main shaft and the tapered bushing, the spherical bearing and the spherical surface of the cone, which aggravates the generation of frictional heat, makes the oil temperature too high, and the oil is diluted.
(5) The radial fit of the spherical tile seat and the bed creates a gap, which slips during operation, thus changing the coincidence accuracy of the main shaft and the taper sleeve.
(6) Wear of the spherical tile seat and the support surface of the bed, and the wear of the spherical bearing causes the main shaft of the crushing cone to be lowered or lifted.
For the above reasons. The following measures should be taken:
(1) Check the clearance between the main shaft and the taper sleeve. If the clearance is too small, the lower part of the thrust plate can be adjusted to increase the gap between the spherical bearing seat and the annular contact surface of the bed, so that the crushing cone rises and the gear clearance is within the specified range to meet the technical requirements.
(2) In the treatment of the partial conical broken car, it is found that the contact between the conical main shaft and the tapered bushing also changes when the spherical bearing and the broken cone are in contact with the inner ring. Affect the stability of the crushing cone, and scrape the spherical bearing. Make the crushing cone and the spherical bearing in contact with the outer ring.
(3) When the oil quantity is insufficient, check the lower cover of the frame, the transmission bearing and flange, the oil pipe joints of the dustproof device, etc., whether the oil inlet pipe and the oil filter are blocked, and whether the fuel tank oil level is suitable. Whether the oil input to the oil pump is normal or not, the lubricating oil must be replaced regularly. When changing the oil, the fuel tank, piping and filter should be thoroughly cleaned.
(4) The wear generated by the radial and bearing surfaces of the spherical tile seat can be surfacing, and after the radial and support surfaces of the bed are welded and welded, a set of processing tools are processed on site to restore the bed to the design requirements.
(5) When the lubricating oil pressure is too large, adjust or replace the safety valve and adjust the pressure within the specified range.
2 Dust-proof device Because the crushing cone has a high number of swings and a large swinging stroke, and the product has a fine particle size and a large dust concentration, the dust can easily enter the lubricating system of the crusher, resulting in a short service life of the lubricating oil. Bushings, body bushings, bowl bearings, etc. are often burned out. The treatment method is to select an industrial felt with a thickness of 8-10 mm, and the felt is fixed on the outer edge of the oil groove of the bowl-shaped bearing frame, and the height of the felt is guaranteed to have a compression amount of 3-5 mm. The felt after installation should be lubricated to reduce the wear of the felt. The advantage is that in the water seal dustproof device, most of the coarse dust has been blocked by the felt. This prevents dust from entering the lubrication system. The sealing effect is better.
3 The fixing method of the body bushing is due to the zinc alloy fixing method of the bushing and the body. Due to the insufficient strength of the zinc alloy, it is crushed and crushed after working for a period of time, and the fixed effect is lost. Some small ore enters between them and destroys the cooperation. Some enter the lubricating oil, causing the bushing to pull, heat, shrink and shift. When the bushing moves up a certain distance, it forms a friction with a large gear with a certain pressure. The frictional heat rises sharply. Caused a burnt accident. The solution is as follows: First, an interference fit is adopted between the outer diameter of the bushing and the body, especially the upper end of the bushing. Secondly, the original fixing method is changed, and the key is fixed to prevent the rotation of the bushing and prevent the bushing from moving upward. Thirdly, the use of the nylon sleeve is better.
4 The connection between the conical head and the main shaft The connection between the conical head and the main shaft is often loosened during operation due to the threaded connection. Treatment: When the cone is used for a certain period of time, plan to press the actual size of the thread on the spindle. The internal thread weld of the conical head is assembled. After assembly. Using a lifting screw hole on the main shaft, a special bolt and a conical pressure plate are machined, and the conical head is pressed again, leaving a certain gap between the two. The rubber sheet is padded to cushion. This method works well.
5 Blocking of the ore funnel According to the basic theoretical analysis of the mechanics of the powder layer. The horizontal inclination of the hopper wall must satisfy a = 450 + 1 / 213 to form a stream. However, the feed size is not uniform. The transition between the feed funnel and the feed port forms a right angle, especially when the dryness and wetness of the ore changes, causing blockage, resulting in inconvenient operation and unsafe factors. Affect the normal operation of the equipment. The treatment method is to add a slanted curved lining to the front end surface of the feeding funnel, so that the material is shaken off onto the curved lining plate along the lining plate to freely slide the human mouth.
6 Partial wear of the rolling wall and the body casing The main reason for the partial wear of the rolling wall and the body bushing is that the center line of the feeding port is consistent with the center line of the crusher. The geometric centerline of the stream passing through the feed port is inconsistent with the centerline of the feed port. It only accounts for 2/3 of the cross-sectional area of ​​the feed V1, so the material enters the crushing chamber and flows to one side, causing partial wear. Solution: Move the feed port 100--150mm so that the material flow through the feed port is the same as the center line of the crusher, thus achieving balanced mining. Or improve the upper feeding device to achieve uniform ore feeding, which can achieve uniform wear of the rolling wall and the body bushing. 
The application of cone crusher is very extensive. Shanghai Yongli Road and Bridge is only based on experience and professional methods. Please refer to the actual situation when implementing it. The content of this paper is only for reference. There are also many manufacturers of cone crusher. Different, here is not to introduce one by one, Shanghai Yanli Road and Bridge professional focus on cone crusher, is committed to providing customers with better cone crusher and better after-sales service!
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