An eccentric shaft and a cone crusher

Abstract

The present invention relates to an eccentric shaft and a cone crusher. The cone crusher includes a feeding device, an eccentric shaft (14), a frame, and a motor (21). After the minerals to be crushed enter the cone crusher through the feeding device, the motor (21) drives the pulley and the eccentric shaft (14), as well as the eccentric counterweight fixed on the eccentric shaft (14) to rotate freely and rapidly together, so that the eccentric section (14-2) in the middle of the eccentric shaft (14) can achieve rapid eccentric rotation, and at the same time, the body (15) can achieve circumferential swinging. Under the supporting action of the fixedly installed bowl-shaped bearing (11) seat, the moving cone (16) installed on the body (15) swings circumferentially together to repeatedly extrude and crush the materials entering between the moving cone (16) and the fixedly installed fixed cone (17), completing the crushing work of the minerals; the present invention is used for the crushing operation of various ores, and can simplify the structure, reduce the cost, improve the transmission efficiency, reduce the noise, and optimize the maintenance performance.

Description

Technical Field

[0001] The present invention relates to a cone crusher, in particular to an eccentric shaft and a cone crusher. Background Art

[0002] Cone crushers are mainly used for mineral crushing. Types of crushers include various spring cone crushers, hydraulic cone crushers, gyratory crushers, etc. Their working principle is that the dynamic cone is driven by a power system to perform a circular swing, so that the conical crushing cavity formed by the dynamic cone and the fixed cone changes from large to small and then from small to large in the circumferential direction in a cycle, realizing the crushing process of extruding and crushing the material entering the crushing cavity and then discharging the material.

[0003] In the existing mature technology, cone crushers drive the swing of the dynamic cone through gear transmission to achieve the crushing operation of materials. For example, spring cone crushers and single-cylinder hydraulic cone crushers drive the eccentric sleeve to rotate through gears, so that the main shaft installed inside the eccentric sleeve realizes swing, while multi-cylinder hydraulic cone crushers drive the eccentric sleeve to rotate through gears, and the body sleeved outside the eccentric sleeve realizes swing.

[0004] The existing mature technology of gear transmission has its inevitable disadvantages, including large difficulty in dimension matching, low transmission efficiency, high noise, difficult maintenance, high production cost, etc. Summary of the Invention

[0005] The purpose of the present invention is to overcome the disadvantages of the existing technology and provide an eccentric shaft and a cone crusher.

[0006] The purpose of the present invention is achieved by the following technical solutions: An eccentric shaft, characterized in that: it comprises an upper concentric section, a lower concentric section and a middle eccentric section. The middle eccentric section forms a certain deflection angle with the upper and lower concentric sections. An eccentric counterweight block is fixedly arranged on the lower concentric section. The center of the eccentric counterweight block and the center of the middle eccentric section are symmetrically arranged with respect to the axis of the concentric section. A step is arranged on the lower concentric section. An oil delivery hole is axially arranged inside the eccentric shaft, and oil discharge branch roads for oil outlet are arranged on both the lower concentric section and the middle eccentric section.

[0007] The eccentric counterweight block is arranged between the lower side of the middle eccentric section and the bowl-shaped seat, playing a role in balancing the center of gravity with components such as the eccentric shaft and the body, and avoiding deviation when the eccentric shaft rotates.

[0008] A cone crusher includes a frame, which comprises an upper frame body, a middle frame body and a lower frame body. A hopper is arranged at the upper end of the upper frame body, and a receiving tray is arranged at the lower end of the hopper. The upper frame body includes an outer ring of the frame and a middle fixing seat. The outer ring of the frame and the middle fixing seat are connected by a number of reinforcing ribs. The upper end of the eccentric shaft is fixed through the middle fixing seat. The receiving tray is connected to the upper end face of the middle fixing seat. An upper copper sleeve is arranged between the middle fixing seat and the upper end of the eccentric shaft. The upper frame body is connected to the middle frame body through a first flange. A support sleeve is arranged at the top of the lower frame body, and the contact surface between the support sleeve and the top of the lower frame body is a conical surface. The adjusting sleeve is located inside the support sleeve and is connected to the support sleeve through a thread. A number of ear seats are arranged on the outer side of the support sleeve. The bottom of the middle frame body is connected to the top of the lower frame body, and a number of openings are arranged on the side of the middle frame body. A number of ear seats respectively extend out from the openings and are connected to the lower frame body through an oil cylinder. A moving cone is arranged on the body through the eccentric section in the middle of the eccentric shaft. A middle copper sleeve is arranged between the body and the eccentric main shaft. A bowl-shaped bearing is arranged at the lower end of the body, and the bowl-shaped bearing is connected to the inner ring of the lower frame body. A positioning cylinder is arranged in the middle of the inner ring of the lower frame body. The lower concentric section of the eccentric shaft is positioned through the positioning cylinder, and the lower end of the eccentric shaft passes through the bottom of the positioning cylinder. The step surface of the lower concentric section is in contact with the bottom surface of the positioning cylinder. A lower copper sleeve is arranged between the lower concentric section and the positioning cylinder.

[0009] The lower part of the body is set as a spherical surface, and the spherical surface is arranged above the bowl-shaped bearing.

[0010] A second flange is arranged at the bottom of the lifting ring flange. The second flange is located inside the lifting ring flange. A sealing ring is arranged between the second flange and the lifting ring flange. The lower end of the second flange is connected to the fixed cone. A first wedge block is arranged inside the fixed cone. The first wedge block is connected to a second wedge block inside. The second wedge block is connected to the adjusting sleeve.

[0011] The present invention has the following advantages: providing an eccentric shaft and a cone crusher to replace the existing spring cone crusher and hydraulic cone crusher for crushing operations of various ores, which can adjust the crushing particle size, simplify the structure, reduce costs, improve transmission efficiency, reduce noise and optimize maintenance performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the present invention;

[0013] Figure 2 is a front view of the eccentric shaft;

[0014] Figure 3 is a side view of the eccentric shaft;

[0015] In the figure: 1 - hopper, 2 - upper copper sleeve, 3 - upper frame body, 4 - first flange, 5 - middle frame body, 6 - lifting ring flange, 7 - adjusting sleeve, 8 - support sleeve, 9 - oil cylinder, 10 - lower frame body, 11 - spherical roller bearing, 12 - lower copper sleeve, 13 - middle copper sleeve, 14 - eccentric shaft, 15 - body, 16 - moving cone, 17 - fixed cone, 18 - first wedge block, 19 - second wedge block, 20 - material receiving tray, 21 - motor, 22 - second flange, 14-1 - upper concentric section, 14-2 - middle eccentric section, 14-3 - lower concentric section. Detailed implementation mode

[0016] The present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0017] As Figures 1 - 3 shown, an eccentric shaft 14 includes an upper concentric section 14-1, a lower concentric section 14-3 and a middle eccentric section 14-2. The middle eccentric section 14-2 forms a certain angle with the upper and lower concentric sections. An eccentric counterweight is fixedly arranged on the lower concentric section 14-3. The center of the eccentric counterweight is symmetrically arranged with respect to the axis of the concentric section with the center of the middle eccentric section 14-2. A step is arranged on the lower concentric section 14-3. An oil delivery hole is axially arranged in the eccentric shaft 14, and oil discharge branch roads for oil discharge are arranged on both the lower concentric section 14-3 and the middle eccentric section 14-2.

[0018] The eccentric counterweight is arranged between the lower side of the middle eccentric section 14-2 and the spherical seat.

[0019] A cone crusher includes a frame, and the frame includes an upper frame body 3, a middle frame body 5 and a lower frame body 10. A hopper 1 is arranged at the upper end of the upper frame body 3, and a receiving tray 20 is arranged at the lower end of the hopper 1. The upper frame body 3 includes an outer ring of the frame and a middle fixing seat. The outer ring of the frame and the middle fixing seat are connected by a number of reinforcing ribs. The upper end of the eccentric shaft 14 is fixed through the middle fixing seat. The receiving tray 20 is connected to the upper end face of the middle fixing seat. A upper copper sleeve 2 is arranged between the middle fixing seat and the upper end of the eccentric shaft 14. The upper frame body 3 is connected to the middle frame body 5 through a first flange 4. A support sleeve 8 is arranged at the top of the lower frame body 10. The contact surface between the support sleeve 8 and the top of the lower frame body 10 is a conical surface. The adjusting sleeve 7 is located inside the support sleeve 8 and is connected to the support sleeve 8 through a thread. A number of ear seats are arranged on the outside of the support sleeve 8. The bottom of the middle frame body 5 is connected to the top of the lower frame body 10, and a number of openings are arranged on the side of the middle frame body 5. A number of ear seats respectively extend out from the openings and are connected to the lower frame body 10 through an oil cylinder 9. A moving cone 16 is arranged on the body 15 through an eccentric section 14-2 in the middle of the eccentric shaft 14. A middle copper sleeve 13 is arranged between the body 15 and the eccentric main shaft. A bowl-shaped bearing 11 is arranged at the lower end of the body 15. The bowl-shaped bearing 11 is connected to the inner ring of the lower frame body 10. A positioning cylinder is arranged in the middle of the inner ring of the lower frame body 10. The lower concentric section 14-3 of the eccentric shaft 14 is positioned through the positioning cylinder, and the lower end of the eccentric shaft 14 passes through the bottom of the positioning cylinder. The step surface of the lower concentric section 14-3 is in contact with the bottom surface of the positioning cylinder. A lower copper sleeve 12 is arranged between the lower concentric section 14-3 and the positioning cylinder.

[0020] The lower part of the body 15 is set as a spherical surface, and the spherical surface is arranged above the bowl-shaped bearing 11.

[0021] A second flange 22 is arranged at the bottom of the lifting ring flange 6. The second flange 22 is located inside the lifting ring flange 6. A sealing ring is arranged between the second flange 22 and the lifting ring flange 6. The lower end of the second flange 22 is connected to the fixed cone 17. A first wedge block 18 is arranged inside the fixed cone 17. A second wedge block 19 is arranged inside the first wedge block 18 for connection. The second wedge block 19 is connected to the adjusting sleeve 7.

[0022] The working process of the present invention is as follows: Minerals enter the cone crusher from the hopper 1 and enter the cone crusher under the buffering effect of the receiving tray 20. At the same time, the motor 21 is started. The motor 21 drives the pulley to work under working conditions, thereby driving the eccentric main shaft to rotate, and driving the eccentric counterweight block fixed on the eccentric main shaft to rotate freely and quickly together, so that the eccentric section 14-2 in the middle of the eccentric main shaft can achieve rapid eccentric rotation, and at the same time, the body 15 can achieve circumferential swing. Under the supporting effect of the fixedly installed bowl-shaped bearing 11 seat, the moving cone 16 installed on the body 15 swings circumferentially together, and the materials entering between the moving cone 16 and the fixedly installed fixed cone 17 are repeatedly squeezed and crushed to complete the crushing work of the minerals.

Claims

1. A cone crusher, characterized in that: It includes a frame and an eccentric shaft (14). The frame includes an upper frame body (3), a middle frame body (5), and a lower frame body (10). The eccentric shaft (14) consists of an upper concentric section (14-1), a lower concentric section (14-3), and a middle eccentric section (14-2). The middle eccentric section (14-2) forms a certain deflection angle with the upper and lower concentric sections. An eccentric counterweight block is fixedly arranged on the lower concentric section (14-3). The center of the eccentric counterweight block is symmetrically arranged with respect to the axis of the concentric section with the center of the middle eccentric section (14-2). There is a step on the lower concentric section (14-3). An oil delivery hole is axially arranged inside the eccentric shaft (14). Oil discharge branch roads for oil discharge are arranged on both the lower concentric section (14-3) and the middle eccentric section (14-2). A hopper (1) is arranged at the upper end of the upper frame body (3). A material receiving tray (20) is arranged at the lower end of the hopper (1). The upper frame body (3) includes an outer frame circle and a middle fixed seat. The outer frame circle and the middle fixed seat are connected by a number of reinforcing ribs. The upper end of the eccentric shaft (14) is fixed through the middle fixed seat. The material receiving tray (20) is connected to the upper end face of the middle fixed seat. An upper copper sleeve (2) is arranged between the middle fixed seat and the upper end of the eccentric shaft (14). The upper frame body (3) is connected to the middle frame body (5) through a first flange (4). A support sleeve (8) is arranged at the top of the lower frame body (10). The contact surface between the support sleeve (8) and the top of the lower frame body (10) is a conical surface. An adjusting sleeve (7) is arranged inside the support sleeve (8) and is connected to the support sleeve (8) through threads. A number of ear seats are arranged on the outer side of the support sleeve (8). The bottom of the middle frame body (5) is connected to the top of the lower frame body (10). A number of openings are arranged on the side of the middle frame body (5). The number of ear seats respectively extend out from the openings and are connected to the lower frame body (10) through an oil cylinder (9). A moving cone (16) is arranged on the middle eccentric section (14-2) of the eccentric shaft (14) through a body (15). A middle copper sleeve (13) is arranged between the body (15) and the eccentric shaft (14). A bowl-shaped bearing (11) is arranged at the lower end of the body (15). The bowl-shaped bearing (11) is connected to the inner ring of the lower frame body (10). A positioning cylinder is arranged in the middle of the inner ring of the lower frame body (10). The lower concentric section (14-3) of the eccentric shaft (14) is positioned through the positioning cylinder. The lower end of the eccentric shaft (14) passes through the bottom of the positioning cylinder. The step surface of the lower concentric section (14-3) is in contact with the bottom surface of the positioning cylinder. A lower copper sleeve (12) is arranged between the lower concentric section (14-3) and the positioning cylinder;It further includes a lifting ring flange (6). A second flange (22) is provided at the bottom of the lifting ring flange (6). The second flange (22) is located in the inner circle of the lifting ring flange (6). A sealing ring is provided between the second flange (22) and the lifting ring flange (6). The lower end of the second flange (22) is connected to a fixed cone (17). A first wedge block (18) is provided inside the fixed cone (17). The first wedge block (18) is connected to a second wedge block (19) inside. The second wedge block (19) is connected to an adjusting sleeve (7).; 2. The cone crusher according to claim 1, characterized in that: The lower part of the body (15) is arranged as a spherical surface, and the spherical surface is arranged above the bowl-shaped bearing (11).

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