Single cylinder cone crusher with overheating protection

Abstract

The utility model discloses a single cylinder cone crusher with overheating protection, including single cylinder cone crusher body, the single cylinder cone crusher is equipped with the main shaft in, the lower portion of main shaft is equipped with hydraulic cylinder, the piston rod of hydraulic cylinder still is equipped with the air chamber structure, the air chamber structure includes first air chamber and second air chamber, be equipped with slide bar between first air chamber with second air chamber first air chamber is located the bottom of main shaft, second air chamber is located the top of the piston rod of hydraulic cylinder, first air chamber with slide bar connection, slide bar with second air chamber sliding connection, first spring is covered and is equipped on the slide bar, the slide bar still is equipped with air channel structure, air channel structure will first air chamber with second air chamber intercommunication, be equipped with a plurality of one -way air valve in air channel structure. The utility model has solved the problem that single cylinder cone crusher is difficult to trigger and discharge iron hard thing quickly in prior art.

Description

Technical Field

[0001] This utility model relates to the field of cone crusher technology, and in particular to a single-cylinder cone crusher with overheat protection. Background Technology

[0002] The single-cylinder cone crusher is a high-efficiency crushing equipment that incorporates advanced design concepts. It features high efficiency, large production capacity, high-quality aggregates, and ease of maintenance. It is widely used in medium, fine, and ultrafine crushing operations in industries such as metal and non-metal mining, cement, sand and gravel, and metallurgy, and is particularly suitable for hard rock crushing. During operation, when hard objects or iron blocks enter the crushing chamber, the crushing section may struggle to handle them, causing jamming and spindle seizure. This leads to overheating of the internal hydraulic oil and components due to high load. Therefore, the single-cylinder cone crusher is equipped with a bottom hydraulic cylinder connected to an accumulator for overload protection. When a hard object or iron block enters the crushing chamber, a large spreading force is generated between the inner and outer cones. This force is rigidly transmitted to the bottom hydraulic cylinder, causing a rapid increase in pressure. When the spreading force (hydraulic cylinder oil pressure) reaches a certain level, it forces the oil in the hydraulic cylinder to flow towards the accumulator, causing the spindle to descend, increasing the distance between the inner and outer cones, and allowing the hard object or iron block to be discharged. Because it is a single-cylinder structure, this over-iron protection structure is very simple and reliable. The crushing chamber of the single-cylinder cone crusher can open rapidly when over-iron passes and can slowly return to its normal opening size after the over-iron passes.

[0003] However, when using the above-mentioned existing technology, the hydraulic oil pressure feedback sensitivity is not high. When the accumulator is triggered to start, the hydraulic oil and the spindle have already overheated. Therefore, there is an urgent need for an iron overheat protection device that can be triggered quickly. Utility Model Content

[0004] The purpose of this invention is to solve the problem that single-cylinder cone crushers in the prior art are difficult to quickly trigger and discharge hard iron blocks.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A single-cylinder cone crusher with overheat protection includes a single-cylinder cone crusher body. The single-cylinder cone crusher has a main shaft inside, and a hydraulic cylinder is located below the main shaft. The piston rod of the hydraulic cylinder also has the air chamber structure. The air chamber structure includes a first air chamber and a second air chamber. A sliding rod is provided between the first air chamber and the second air chamber. The first air chamber is located at the bottom of the main shaft, and the second air chamber is located at the top of the piston rod of the hydraulic cylinder. The first air chamber is connected to the sliding rod, and the sliding rod is slidably connected to the second air chamber. A first spring is sleeved on the sliding rod. An air passage structure is also provided inside the sliding rod, connecting the first air chamber and the second air chamber. The air passage structure has several one-way ventilation valves.

[0006] Preferably, the airway structure includes a first airway and a second airway, both of which pass through the slide rod and connect the first air chamber and the second air chamber. The air inlet of the first airway is sleeved with the one-way ventilation valve, and the air inlet of the second airway is sleeved with the one-way ventilation valve.

[0007] Preferably, the second air chamber is further provided with a push plate, the push plate is connected to the slide rod, the push plate is slidably connected to the second air chamber, and a second spring is provided between the push plate and the second air chamber, the second spring being sleeved on the slide rod.

[0008] Preferably, the one-way vent valve includes a valve body, which is disposed on the air outlet end of the first air passage and the second air passage. The valve body is provided with an exhaust hole, which is connected to the first air passage and the second air passage. A valve is sleeved on the valve body, which slides relative to the valve body. A third spring is provided on the valve.

[0009] Preferably, the outlet end of the first air passage is provided with a bevel.

[0010] The beneficial effects proposed by this utility model are as follows: During operation, the main shaft of the single-cylinder cone crusher drives its top cone crushing section to crush the stone through eccentric rotation. When iron blocks are mixed into the stone, the cone crushing section has difficulty crushing the iron blocks, causing them to become stuck. At this time, the main shaft is subjected to stress from the iron blocks, resulting in downward pressure along its axis. This pressure is gradually transmitted downwards to the air chamber structure, which is divided into a first air chamber and a second air chamber. In the above process, when the air chamber structure is in an unactivated state, the first air chamber is not filled with gas, while the second air chamber is filled with gas. When the... After the air chamber structure is triggered, the slide bar, driven by the main shaft, gradually compresses the space inside the second air chamber, causing the air pressure inside the second air chamber to rise. When the air pressure reaches the level required to open the one-way vent valve for venting the second air chamber, the one-way vent valve introduces the gas inside the second air chamber into the first air chamber through the air passage structure. At this time, the air pressure resistance received by the slide bar in the second air chamber decreases, allowing the slide bar to slide downwards in the second air chamber, simultaneously driving the main shaft to move downwards. This allows the main shaft to release the jammed state of the cone crushing part, reducing the risk of the main shaft being damaged by stress.

[0011] Furthermore, when the spindle needs to be reset, the first air chamber is filled with gas. This gas causes the pressure within the first air chamber to reach the level required for the one-way vent valve to open for gas recirculation. Subsequently, the gas in the first air chamber flows back into the second air chamber through the air passage structure, increasing the pressure within the second air chamber. This pressure, combined with the elastic force released by the first spring, pushes the slide rod outward, thus resetting the spindle. This method effectively removes iron blocks or hard objects before the spindle and hydraulic oil overheat, improving the efficiency of removing such objects and reducing the risk of spindle damage due to overheating. Attached Figure Description

[0012] Figure 1 This is a perspective view of a single-cylinder cone crusher with overheat protection proposed in this utility model; Figure 2 This is a side sectional view of a single-cylinder cone crusher with overheat protection proposed in this utility model; Figure 3 A partial enlarged view A is shown in the side sectional view of a single-cylinder cone crusher with overheat protection proposed in this utility model. Figure 4 This is a partial enlarged view B within a partial enlarged view A of a single-cylinder cone crusher with overheat protection proposed in this utility model; Figure 5This is a schematic diagram of the connection of a one-way vent valve for a single-cylinder cone crusher with overheat protection proposed in this utility model.

[0013] In the diagram: 1. Single-cylinder cone crusher body; 2. Main shaft; 3. Hydraulic cylinder; 4. Cone crushing section; 5. Slide rod; 6. First spring; 7. First air chamber; 8. Second air chamber; 9. First air passage; 10. Second air passage; 11. Push plate; 12. Second spring; 13. Valve body; 14. Valve; 15. Exhaust port; 16. Third spring; 17. Bevel. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Reference Figures 1 to 5A single-cylinder cone crusher with overheat protection includes a single-cylinder cone crusher body 1. A main shaft 2 is located inside the single-cylinder cone crusher. A hydraulic cylinder 3 is located below the main shaft 2. An air chamber structure is also provided on the piston rod of the hydraulic cylinder 3. The air chamber structure includes a first air chamber 7 and a second air chamber 8. A sliding rod 6 is provided between the first air chamber 7 and the second air chamber 8. The first air chamber 7 is located at the bottom of the main shaft 2, and the second air chamber 8 is located at the top of the piston rod of the hydraulic cylinder 3. The first air chamber 7 is connected to the sliding rod 6, and the sliding rod 6 is slidably connected to the second air chamber 8. A first spring 6 is sleeved on the sliding rod 6. An air passage structure is also provided inside the sliding rod 6, connecting the first air chamber 7 and the second air chamber 8. Several one-way ventilation valves are provided within the air passage structure. Specifically, during the operation of the single-cylinder cone crusher, the main shaft 2 drives its top cone crushing section 4 to crush the stone through eccentric rotation. When iron blocks are mixed into the stone, the cone crushing section 4 has difficulty crushing the iron blocks, so the iron blocks get stuck at the cone crushing section 4. At this time, the main shaft 2 is subjected to stress caused by the iron blocks, causing the main shaft 2 to generate downward pressure along its axis. This pressure is gradually transmitted downward to the air chamber structure, which is divided into the first air chamber 7 and the second air chamber 8. In the above process, when the air chamber structure is in an untriggered state, the first air chamber 7 is not filled with gas, while the second air chamber 8 is filled with gas. After the air chamber structure is triggered, the slide rod 5, driven by the main shaft 2, gradually compresses the space inside the second air chamber 8, causing the air pressure inside the second air chamber 8 to rise. When the air pressure reaches the level required to open the one-way ventilation valve for venting the second air chamber 8, the one-way ventilation valve inputs the gas inside the second air chamber 8 into the first air chamber 7 through the air passage structure. At this time, the air pressure resistance received by the slide rod 5 in the second air chamber 8 is reduced, allowing the slide rod 5 to slide downwards in the second air chamber 8, simultaneously driving the main shaft 2 to move downwards. This enables the main shaft 2 to drive the cone crushing part 4 out of the jammed state, reducing the risk of the main shaft 2 being damaged by stress.

[0016] Furthermore, when the spindle 2 needs to be reset, the first air chamber 7 is filled with gas. At this time, the gas causes the air pressure in the first air chamber 7 to reach the condition for opening the one-way vent valve for gas return. Subsequently, the gas in the first air chamber 7 flows back to the second air chamber 8 through the air passage structure, increasing the air pressure in the second air chamber 8. Then, combined with the elastic force released by the first spring 6, the slide rod 5 is pushed outward, realizing the reset of the spindle 2.

[0017] The above method enables the removal of iron blocks or hard objects before the spindle and hydraulic oil overheat, improving the efficiency of removing iron blocks or hard objects and reducing the risk of the spindle 2 being damaged due to overheating.

[0018] Specifically, the air duct structure includes a first air duct 9 and a second air duct 10. Both the first air duct 9 and the second air duct 10 pass through the slide rod 5 and connect the first air chamber 7 and the second air chamber 8. The air inlet end of the first air duct 9 is sleeved with the one-way vent valve, and the air inlet end of the second air duct 10 is also sleeved with the one-way vent valve. During the gas flow between the first air chamber 7 and the second air chamber 8, the first air duct 9 is used to transport gas from the second air chamber 8 to the first air chamber 7, while the second air duct 10 is used for the return flow of gas from the first air chamber 7 to the second air chamber 8. The fact that both the first air duct 9 and the second air duct 10 are arranged through the slide rod 5 simplifies the structure of the air duct and improves the efficiency of gas flow.

[0019] Specifically, the second air chamber 8 is further provided with a push plate 11, which is connected to the slide rod 5 and slidably connected to the second air chamber 8. A second spring 12 is also provided between the push plate 11 and the second air chamber 8, and the second spring 12 is sleeved on the slide rod 5. During the process of the slide rod 5 compressing the gas in the second air chamber 8, the push plate 11 can be added inside the second air chamber 8. The push plate 11 can increase the area of ​​the slide rod 5 that compresses the gas, thereby improving the pressurization efficiency and the reaction speed of the air chamber structure. During this process, the second spring 12 gradually releases its stored elastic force as the push plate 11 moves downward. The elastic force, combined with the pressure of the main shaft 2, helps to increase the thrust of the push plate 11 and further improve the pressurization speed. At the same time, when the main shaft 2 resets, the push plate 11 moves upward. During this process, the second spring 12 is gradually compressed and generates reverse elastic resistance, which helps to reduce the speed at which the push plate 11 moves upward to reset, reducing the risk of the push plate 11 impacting the second air chamber 8 and being damaged due to excessive speed during the reset process.

[0020] Specifically, the one-way vent valve includes a valve body 13, which is disposed on the air outlet end of the first air passage 9 and the second air passage 10. The valve body 13 is provided with an exhaust hole 15, which is connected to the first air passage 9 and the second air passage 10. A valve 14 is sleeved on the valve body 13, and the valve 14 slides relative to the valve body 13. A third spring 16 is provided on the valve 14. During operation, when gas enters the valve body 13, if the gas pressure thrust exceeds the elastic resistance of the third spring 16, the gas will pass through the exhaust port 15 and push the valve 14 to slide on the valve body 13. At this time, the exhaust port 15 is in the open state, and the gas can flow through the exhaust port 15 in the first air passage 9 or the second air passage 10. When the gas flows back in the first air passage 9 or the second air passage 10, the backflowing gas will push the valve 14 to slide in the opposite direction and close the exhaust port 15, reducing the risk of gas backflow and enabling the one-way vent valve to allow one-way ventilation, so that the air passage structure can transport gas in a smooth flow.

[0021] Specifically, the outlet end of the first air passage 9 is provided with a bevel 17. In the arrangement of the first air passage 9 and the second air passage 10, in order to improve the trigger response speed of the air chamber structure, the exhaust speed of the first air passage 9 should be faster than that of the second air passage 10. Therefore, the bevel 17 is provided at the outlet end of the first air passage 9. The bevel 17 makes the diameter of the outlet end of the first air passage 9 larger than that of the inlet end, thereby accelerating the exhaust speed of the first air passage 9, further improving the response speed of the air chamber structure, reducing the time the main shaft 2 is under pressure, and increasing the service life of the main shaft 2.

[0022] It should be noted that during the assembly of the above-mentioned components, in order to improve the gas tightness, each component is equipped with a sealing ring (not shown in the figure). Using sealing rings to improve gas tightness is a common technical means used by those skilled in the art, and will not be described in detail here.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A single-cylinder cone crusher with overheat protection, comprising a single-cylinder cone crusher body, wherein a main shaft is provided inside the single-cylinder cone crusher, and a hydraulic cylinder is provided below the main shaft, characterized in that: The piston rod of the hydraulic cylinder is also provided with an air chamber structure, which includes a first air chamber and a second air chamber. A sliding rod is provided between the first air chamber and the second air chamber. The first air chamber is located at the bottom of the main shaft, and the second air chamber is located at the top of the piston rod of the hydraulic cylinder. The first air chamber is connected to the sliding rod, and the sliding rod is slidably connected to the second air chamber. A first spring is sleeved on the sliding rod, and an air passage structure is also provided inside the sliding rod. The air passage structure connects the first air chamber and the second air chamber, and a plurality of one-way vent valves are provided inside the air passage structure.

2. The single-cylinder cone crusher with overheat protection according to claim 1, characterized in that: The airway structure includes a first airway and a second airway. Both the first airway and the second airway pass through the slide rod and connect the first air chamber and the second air chamber. The air inlet of the first airway is sleeved with the one-way ventilation valve, and the air inlet of the second airway is sleeved with the one-way ventilation valve.

3. A single-cylinder cone crusher with overheat protection as described in claim 2, characterized in that: The second air chamber is also equipped with a push plate, which is connected to the slide rod. The push plate is slidably connected to the second air chamber. A second spring is also provided between the push plate and the second air chamber, and the second spring is sleeved on the slide rod.

4. A single-cylinder cone crusher with overheat protection as described in claim 3, characterized in that: The one-way vent valve includes a valve body, which is disposed on the air outlet end of the first air passage and the second air passage. The valve body is provided with an exhaust hole, which is connected to the first air passage and the second air passage. A valve is sleeved on the valve body, which slides relative to the valve body. A third spring is provided on the valve.

5. A single-cylinder cone crusher with overheat protection as described in claim 4, characterized in that: The outlet end of the first air passage is provided with a bevel.

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