A cone crusher

Abstract

The present utility model relates to a crusher, in particular to a cone crusher. It comprises an upper frame, a middle frame and a lower frame. The upper frame is connected to the lower frame through the middle frame. The lower frame is equipped with an eccentric structure, a supporting assembly and a transmission mechanism. The eccentric sleeve in the eccentric structure is located in the bearing seat. A dustproof cylinder is installed above the bearing seat. The hydraulic lifting mechanism is located on the middle frame. The moving cone spindle assembly is located in the upper, middle and lower frames. The dustproof cylinder is provided with an oil inlet hole for lubricating oil to enter. The lower frame is provided with a vertical air inlet hole. A quick-release valve is added to the hydraulic lifting mechanism. A hydraulic jacking device is installed on the middle frame. The use of the hydraulic jacking device reduces the disassembly time and improves the efficiency. Compared with the prior art, the quick-release valve added to the hydraulic lifting mechanism of the utility model can achieve rapid pressure relief when the rated load is exceeded, thereby minimizing the damage to the motor, and reducing the production cost and maintenance failure rate.

Description

Technical Field

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

[0002] In the current cone crusher, when there are large pieces of ore or large hard objects falling into the crushing chamber composed of the fixed cone plate and the movable cone plate in the crushing process, the motor will burn out because the actual load of the crusher exceeds the maximum rated load in an instant; therefore, it greatly affects the improvement of production efficiency and the high maintenance cost of replacing the motor.

[0003] In addition, since the fixed cone liner and the movable cone liner are vulnerable parts of the cone crusher, they have always been replaced manually, which is inefficient and has a high labor intensity for maintenance workers. Summary of the invention

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a cone crusher which can reduce the occurrence of motor burnout and lower the failure rate.

[0005] The utility model adopts the following technical solutions:

[0006] A cone crusher comprises an upper frame, a middle frame and a lower frame. The upper frame is connected to the lower frame through the middle frame. An eccentric structure, a supporting assembly and a transmission mechanism are installed in the lower frame. The eccentric sleeve in the eccentric structure is located in a bearing seat. A dustproof cylinder is installed above the bearing seat. The hydraulic lifting mechanism is located on the middle frame. The moving cone spindle group is located in the upper, middle and lower frames. The dustproof cylinder is provided with an oil inlet hole for lubricating oil to enter. The lower frame is provided with a vertical air inlet hole. A quick release valve is installed in the hydraulic lifting mechanism.

[0007] Compared with the prior art, the utility model adopting the above technical solution has a quick release valve added to the hydraulic lifting mechanism, which can achieve rapid pressure relief when the rated load is exceeded, thereby minimizing damage to the motor and reducing production costs and maintenance failure rates.

[0008] The preferred embodiment of the present invention is:

[0009] The middle frame is equipped with a hydraulic jacking device, which reduces the time of disassembling the middle frame when the moving cone lining plate and / or the fixed cone lining plate need to be replaced, thereby improving efficiency.

[0010] The top of the main shaft is equipped with a shoulder-type positioning sleeve, and the large diameter end of the positioning sleeve is connected to the upper frame. The use of the positioning sleeve is conducive to improving the service life of the parts.

[0011] An oil inlet hole is arranged on the inner side wall of the dustproof cylinder, and an oil spray nozzle is installed on the oil inlet hole.

[0012] The oil spray nozzle installed on the inner wall of the dustproof cylinder forms an angle of 75 degrees with the plumb line and points to the direction from large to small of the main shaft cone. The oil spray nozzle with an angle of 75 degrees can play a role of good lubrication effect.

[0013] The quick release valve is controlled by a two-position four-way solenoid valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 yes Figure 1 Enlarged view of part A in .

[0016] Figure 3 This is a flow chart of the host over-iron protection of the utility model.

[0017] Figure 4 It is a hydraulic principle diagram of the utility model.

[0018] Figure 5 It is a structural schematic diagram of the prior art. DETAILED DESCRIPTION

[0019] The utility model is described in detail below with reference to the accompanying drawings and embodiments:

[0020] A cone crusher, see attached Figure 1 To Attachment Figure 4 , in the figure: vertical air inlet 1, transmission mechanism 2, moving cone spindle group 3, support assembly 4, upper frame 5, middle frame 6, lower frame 7, dust ring 2 8, annular ring 9, dust ring 1 10, eccentric sleeve 11, counterweight 12, hydraulic lifting mechanism 13, lateral air inlet 14, dust cylinder 15, bearing seat 16, spindle 17, oil inlet hole 18, moving cone liner 19, concave structure 20, bronze plate 21, oil nozzle 22, quick release valve 23, positioning sleeve 24, hydraulic jacking device 25, fixed cone liner 26.

[0021] In this embodiment, a cone crusher is provided, wherein the main frame is composed of an upper frame 5, a middle frame 6, a lower frame 7 and other components.

[0022] The upper frame 5 is connected to the lower frame 7 through the middle frame 6. The lower frame 7 is equipped with an eccentric structure 11, a support assembly 4 and a transmission mechanism 2. The hydraulic lifting mechanism 13 is located on the lower frame 7. The moving cone spindle group 3 is located in the space formed by the upper frame 5, the middle frame 6 and the lower frame 7 (the top of the spindle is located in the upper frame 5, the upper half and the moving cone are located in the middle frame 6, and the lower half of the spindle is located in the eccentric sleeve 11 of the lower frame 7. The lower half of the spindle is connected to the eccentric sleeve 11 through a bearing). The eccentric sleeve 11 in the eccentric structure is located in the bearing seat 16. A dustproof cylinder 15 is installed above the bearing seat 16. The dustproof cylinder 15 is provided with an oil inlet 18 for lubricating oil to enter, and a vertical air inlet 1 is provided on the lower frame 7.

[0023] The vertical air inlet holes 1 are evenly distributed on the lower frame 7; there are three or seven evenly distributed vertical air inlet holes 1 (according to the customized requirements or the actual work site, the vertical air inlet holes 1 can be processed first, sealed by plugging, and the required air inlet nozzles can be connected as needed), and the diameter of the vertical air inlet holes 1 is 4 to 5 times larger than before, and the diameter of the vertical air inlet holes 1 is now 4 cm to 5 cm. The air intake of the current vertical air inlet holes 10 is more than 10 times the air intake of the original horizontal air inlet holes 14, which not only has uniform wind speed, good cooling effect, and good dust prevention effect; and it also makes the lubricating oil extend the service life during use and greatly reduce the wear degree of each component. The air intake of the original horizontal air inlet holes 14, due to the dust pollution problem generated, the lubricating oil needs to be replaced about once every three months. After changing to the current vertical air inlet holes 1, the dust pollution problem of the lubricating oil is greatly reduced, and the lubricating oil can be replaced about six months, seven, eight months or longer.

[0024] The lateral air inlet holes 14 of the prior art are Figure 5 It is obvious that the incoming wind blows toward the main shaft 17 through the eccentric counterweight 12, so the cooling effect on the main shaft 17 obviously cannot achieve the ideal effect; while the improved vertical air inlet 1 not only has a large air volume, but also directly enters from the gaps of each bearing, and the degree of contamination of the lubricating oil entering the cavity from the oil inlet hole 18 is greatly reduced, and the service life of the bronze plate 21 with a curved surface structure in the supporting assembly 4 under the main shaft 17 is greatly improved.

[0025] The height of the eccentric counterweight block 12 in the eccentric sleeve 11 is reduced by 2 cm, the thickness of the counterweight block is increased by 1 cm, and the counterweight block 12 is in an eccentric arc structure. The eccentricity of the eccentric sleeve is 25 degrees; on the basis of the increase in the original eccentric angle of 22.5 degrees, the crushing efficiency is greatly improved.

[0026] An annular boss structure is arranged inside the dustproof cylinder 15 which is externally mounted on the counterweight 12, an annular ring 9 is welded on the annular boss structure, a dustproof ring 10 is mounted on the annular ring 9, and the dustproof ring 10 forms a double sealing structure with the dustproof ring 2 8 at the top of the original dustproof cylinder 15, and the dustproof ring 10 adopts a labyrinth sealing structure.

[0027] The existing structure is only provided with one layer of dust ring 2 8. When a large impact is generated between the eccentric sleeve 11 and the main shaft 17 during movement, there are defects such as too much dust. Now the inner diameter of the improved dust ring 2 8 is slightly larger than the original one to reduce the damage caused to the conical part of the main shaft 17 during the downward pressure action.

[0028] Dustproof ring 10 is located below the original dustproof ring 2 8, and the original dustproof ring 2 8 is placed on the dustproof cover at the top of the dustproof tube 15; under the premise of reducing the height of the counterweight block 12, increasing the thickness, and keeping the total mass of the counterweight unchanged, the double-layer dustproof ring setting is beneficial to reducing dust pollution and reducing the maintenance and / or failure rate of the equipment.

[0029] In the existing structure, the upper frame 5 and the middle frame 6 are connected by bolts. When the fixed cone liner 26 and / or the movable cone liner 19 need to be replaced, the connecting bolts need to be loosened manually, and then the upper frame 5 and the middle frame 6 are separated manually. The hook or wire rope needs to be placed in the threaded hole of the upper frame 5 manually to separate the upper frame 5 from the middle frame 6.

[0030] The preferred improvement of this embodiment: hydraulic lifting devices 25 are evenly arranged on the middle frame 6: a jack is used, and the extended end of the jack is flush with the upper end surface of the lower frame 7. When it is necessary to replace the fixed cone liner 26 and / or the dynamic cone liner 19, it is only necessary to loosen and remove the mounting bolts of the middle frame 6 and the lower frame 7, and then lift it up with the jack. The original manual disassembly takes about 2-3 hours. Now, after using the jack, it only takes about 3-4 minutes to separate the middle frame 6 from the lower frame 7, saving time and efficiently completing the disassembly and replacement of the fixed cone liner 26 and / or the dynamic cone liner 19; the hydraulic lifting device 25 in this embodiment adopts a structural form of four evenly arranged on the middle frame 6, and other evenly distributed methods can also be adopted. For example: the evenly distributed number is determined according to the maximum gap value between the dynamic cone liner 19 and the fixed cone liner 26; on the other hand, the evenly distributed number is determined by a consideration value belonging to the maximum load of the machine.

[0031] The maximum gap between the moving cone liner 19 and the moving cone liner 26 in this embodiment is 80 mm, and the maximum lifting stroke of the hydraulic lifting mechanism 13 is 200 mm. Of course, in actual applications, due to different maximum loads, the uniform distribution number of the uniformly distributed jacks used is also different.

[0032] In this embodiment, since a quick release valve 23 is added to the system circuit of the hydraulic lifting mechanism 13, the quick release valve adopts a two-position four-way solenoid valve. Figure 3 The working principle shown in the figure: the ore material is hard, which can achieve the purpose of rapid cylinder lowering. If iron enters the ore, since iron is much harder than ore, when the main engine passes iron, the main electric working current increases, and the electromagnetic valve of the quick release valve 23 is energized. When the main oil cylinder drops rapidly H1, the gap between the fixed cone liner 26 and the moving cone liner 19 increases B1. When the main oil cylinder drops rapidly H2, the gap between the fixed cone liner 26 and the moving cone liner 19 increases B2. When the abnormal load is eliminated, the main motor working current returns to normal. It effectively reduces or eliminates the damage to the motor caused by the momentary excessive abnormal load, improves work efficiency, and reduces production costs; it can achieve multiple rapid cylinder lowering, which is faster than the original cylinder lowering method protected by nitrogen tanks, and has better effects.

[0033] In this embodiment, a shoulder-type positioning sleeve 24 is preferably mounted on the top end of the main shaft 17, and the large-diameter end of the positioning sleeve 24 is connected to the upper frame 5; the use of the positioning sleeve 24 can effectively increase the life of the parts.

[0034] In this embodiment, an oil inlet hole is preferably provided on the inner wall of the dustproof tube 15, and an oil nozzle 22 is installed on the oil inlet hole. The oil nozzle 22 installed on the inner wall of the dustproof tube 15 forms an angle of 75 degrees with the plumb line and points in the direction from the large diameter end to the small diameter end of the spindle cone. The oil nozzle with an angle of 75 degrees can play a good role in lubrication. Figure 2 as shown in .

[0035] The examples in this embodiment are only examples of the protection scope of the utility model, and are not limited to improvements on other structures within the protection scope of the utility model.

Claims

1. A cone crusher, comprising an upper frame, a middle frame and a lower frame, wherein the upper frame is connected to the lower frame through the middle frame, an eccentric structure, a support assembly and a transmission mechanism are installed in the lower frame, an eccentric sleeve in the eccentric structure is located in a bearing seat, a dustproof cylinder is installed above the bearing seat, and a hydraulic lifting mechanism is located on the middle frame; a movable cone spindle assembly is located in the upper, middle and lower frames, an oil inlet hole for lubricating oil is provided on the dustproof cylinder, and a vertical air inlet hole is provided on the lower frame; the characteristics are: A quick-release valve is installed in the hydraulic lifting mechanism; and a hydraulic jacking device is installed on the middle frame.

2. The cone crusher according to claim 1, characterized in that: The top end of the main shaft is covered with a shoulder type positioning sleeve, and the large diameter end of the positioning sleeve is connected with the upper frame.

3. The cone crusher according to claim 1, characterized in that: An oil inlet hole is arranged on the inner side wall of the dustproof cylinder, and an oil spray nozzle is installed on the oil inlet hole.

4. The cone crusher according to claim 1 or 3, characterized in that: The oil spray nozzle installed on the inner wall of the dustproof cylinder forms an angle of 75 degrees with the plumb line and points in the direction from large to small of the spindle cone.

5. The cone crusher according to claim 1, characterized in that: The quick release valve is controlled by a two-position four-way solenoid valve.

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