Hydraulic control device of multi-cylinder hydraulic cone crusher

Abstract

The invention relates to the technical field of hydraulic control, and discloses a hydraulic control device of a multi-cylinder hydraulic cone crusher. A hydraulic motor; hydraulic oil is arranged in the cylinder body; a convergence frame; a control line; a protection loop; and the hydraulic protection module is used for controlling the hydraulic oil to flow in a protection loop after high pressure is generated during operation of the hydraulic motor. According to the hydraulic control device of the multi-cylinder hydraulic cone crusher, through the arranged hydraulic protection module, when the crusher exceeds the pressure load of two hydraulic pipelines, pipeline protection can be triggered at the moment, so that whole oil cannot flow in a loop of a hydraulic motor and flows in a protection loop; therefore, pressure protection is formed on the pipeline and the whole equipment, protection of the hydraulic pipeline is achieved through automatic control of the hydraulic pipeline, and the service life of the whole operation of the equipment is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic control, and particularly to a hydraulic control device for a multi-cylinder hydraulic cone crusher. Background Art

[0002] A hydraulic crusher refers to a crushing machine in which the content of particles larger than 3 mm in the discharge accounts for more than 50% of the total discharge. Crushing operations are often divided into coarse crushing, medium crushing, and fine crushing according to the size of the feed and discharge particles. Common sand and gravel equipment includes jaw crushers, impact crushers, counterattack crushers, impact crushers, compound crushers, single-stage hammer crushers, vertical crushers, gyratory crushers, cone crushers, roll crushers, double-roll crushers, etc.

[0003] At present, in actual work, a hydraulic cone crusher needs to crush some stones. It uses hydraulic crushing and is driven by a hydraulic system, having a powerful power output and high working performance, and can perform well when facing hard raw materials. In contrast, traditional motor crushers are relatively weak in terms of power and efficiency, especially when dealing with hard materials, the effect may be inferior to that of hydraulic crushers. However, hydraulic crushing also has certain defects. For example, hydraulic crushing drives the rotation of a hydraulic motor through the flow of hydraulic oil to transmit power. When the equipment is crushing, if there are relatively hard stones, during the crushing process, the pressure in the pipeline will be very high, and it is easy to have a phenomenon of bursting of the hydraulic pipe. And along with the increase in the temperature of the hydraulic oil, the high temperature causes the oil to become thinner, the lubrication ability to decrease, and the wear problems of components such as pumps and valves to be aggravated. Therefore, a hydraulic control device for a multi-cylinder hydraulic cone crusher is proposed to solve the above-mentioned problems. Summary of the Invention

[0004] (I) Technical Problems to be Solved Aiming at the deficiencies of the prior art, the present invention provides a hydraulic control device for a multi-cylinder hydraulic cone crusher, which solves the problems in the prior art that when the hydraulic module is working under some relatively large pressures, the pipeline pressure may be too high, resulting in bursting of the oil pipe or leakage of the valve, and under high-pressure operation, the internal hydraulic oil is likely to heat up quickly, affecting the overall operation of the equipment.

[0005] (II) Technical Solutions To achieve the above object, the present invention provides the following technical solution: A hydraulic control device for a multi-cylinder hydraulic cone crusher, comprising: a frame; a hydraulic motor; a cylinder body, in which hydraulic oil is provided; a manifold; a control pipeline; a protection circuit; a hydraulic protection module for controlling the flow of hydraulic oil from the protection circuit after high pressure is generated during the operation of the hydraulic motor; the hydraulic protection module includes a temperature protection component and a pressure protection component; the temperature protection component is used for protecting the hydraulic oil after it reaches a certain high temperature; the pressure protection component is used for protecting the high-pressure action generated during the operation of the hydraulic motor; a pump body is provided inside the cylinder body, and the pump body guides the hydraulic oil in the cylinder body to the manifold through the control pipeline. The hydraulic oil in the manifold is transported to the hydraulic motor through the hydraulic protection module through the liquid inlet pipe. A return pipe is also provided on the hydraulic motor, and the return pipe returns the hydraulic oil back to the inside of the cylinder body through a cooling component.

[0006] Preferably, the pressure protection component includes a fixed frame fixed on the frame. The right side of the fixed frame is connected to the manifold. An oil outlet pipe is installed on the fixed frame. A sleeve is sleeved on the oil outlet pipe. An aggregation frame is fixedly connected to the sleeve. The aggregation frame is slidably connected inside the fixed frame. A rigid spring is sleeved on the sleeve. One end of the rigid spring is connected to the aggregation frame, and the other end of the rigid spring is connected to the fixed frame. An aggregation cavity is provided inside the aggregation frame. One end of the liquid inlet pipe is slidably connected inside the sleeve, and the other end of the liquid inlet pipe is connected to the hydraulic motor.

[0007] Preferably, the liquid inlet pipe includes a main pipe and a sub-pipe. There are two sleeves, and the main pipe and the sub-pipe are respectively sleeved inside the two sleeves. A drainage port is provided on the sub-pipe inside the sleeve.

[0008] Preferably, the protection circuit includes a protection pipe. One end of the protection pipe is connected to a hose, and the other end of the protection pipe is connected to the cooling component. One end of the hose is communicated with the aggregation frame.

[0009] Preferably, a baffle is slidably connected inside the aggregation frame. The top of the baffle is connected to a positioning shaft. A roller is rotatably connected to the surface of the positioning shaft. A slope plate is fixedly connected to the top of the fixed frame. A return hole is provided on the baffle. Preferably, the temperature protection component includes a temperature and pressure box installed on the aggregation frame. A plurality of conduction sheets are provided inside the temperature and pressure box. One end of the conduction sheet passes through and extends to the inside of the aggregation frame. A piston plate is slidably connected inside the temperature and pressure box. A top rod is fixedly connected to the piston plate. The top of the top rod abuts against the positioning shaft. Flat openings are provided at both ends of the positioning shaft. The hydraulic oil inside the aggregation frame radiates the temperature to the conduction sheet, and then radiates to the air inside the temperature and pressure box. The top of the top rod abuts against the positioning shaft.

[0010] Preferably, two sets of the hydraulic motors, protection circuits and liquid inlet pipes are provided, and two sets of temperature protection components are provided. The two sets of temperature protection components are symmetrically distributed with respect to the center line of the agglomeration rack.

[0011] Preferably, the cooling member includes a nitrogen gas tank and a cooling pipe. A nitrogen gas mixture with a certain concentration is provided inside the nitrogen gas tank. An inner cavity and a middle cavity are provided inside the cooling pipe. The nitrogen gas mixture inside the nitrogen gas tank is injected into the middle cavity through a pipeline. The return liquid pipe is communicated inside the inner cavity. A diversion pipe is communicated with the cooling pipe, and the diversion pipe is communicated with the cylinder block.

[0012] Preferably, spiral fins are symmetrically arranged inside the cooling pipe. There are two return liquid pipes, and the two return liquid pipes are respectively communicated on both sides of the cooling pipe.

[0013] (III) Beneficial effects Compared with the prior art, the present invention provides a hydraulic control device for a multi-cylinder hydraulic cone crusher, which has the following beneficial effects: 1. For the hydraulic control device of the multi-cylinder hydraulic cone crusher, when the hydraulic protection module drives the crusher to operate, when some very hard stones are crushed and the oil pressure exceeds a certain value, the hydraulic motors will be driven by oil through two pipelines, instantaneously increasing the torque of the hydraulic motors. And when the whole equipment is running for crushing, when the crusher exceeds the pressure load of the two hydraulic pipelines, the pipeline protection will be triggered at this time, so that the whole oil will not flow from the circuit of the hydraulic motor but from the protection circuit, thereby forming pressure protection for the pipeline and the whole equipment. By using the automatic control of the hydraulic pipeline, the protection of the hydraulic pipeline is realized, and the overall service life of the equipment is improved.

[0014] 2. For the hydraulic control device of the multi-cylinder hydraulic cone crusher, when the temperature of the oil reaches a certain degree Celsius, the temperature is radiated into the sealed cavity through the temperature and pressure component, and then the principle of thermal expansion and contraction of air is used to trigger the rising of the ejector rod, and further trigger the circulation of the protection circuit, realizing the high-temperature protection under hydraulic automatic control, and further improving the operation stability of the equipment from the side.

[0015] 3. For the hydraulic control device of the multi-cylinder hydraulic cone crusher, through the provided cooling member, the low-temperature radiation of the low-temperature mixture can be utilized, so that when the hydraulic oil flows in the circuit and passes through the cooling member, the hydraulic oil itself can be radiated and cooled, further maintaining the overall flow stability of the hydraulic pipeline, protecting the operation of some devices such as pumps and valves, and avoiding the influence of the high temperature of the hydraulic oil on the overall operation of the hydraulic motor. Brief description of the drawings

[0016] Figure 1 Schematic diagram of the overall structure of a hydraulic control device for a multi-cylinder hydraulic cone crusher proposed by the present invention; Figure 2 Schematic diagram of the connection structure of the liquid inlet pipe of a hydraulic control device for a multi-cylinder hydraulic cone crusher proposed by the present invention; Figure 3 Schematic diagram of the connection structure of the fixing frame of a hydraulic control device for a multi-cylinder hydraulic cone crusher proposed by the present invention; Figure 4 Schematic diagram of the connection structure of the baffle of a hydraulic control device for a multi-cylinder hydraulic cone crusher proposed by the present invention; Figure 5 Schematic diagram of the temperature protection component structure of a hydraulic control device for a multi-cylinder hydraulic cone crusher proposed by the present invention; Figure 6 Schematic diagram of the agglomeration frame structure of a hydraulic control device for a multi-cylinder hydraulic cone crusher proposed by the present invention; Figure 7 Schematic diagram of the cooling component structure of a hydraulic control device for a multi-cylinder hydraulic cone crusher proposed by the present invention.

[0017] In the figure: 1, frame body; 2, hydraulic motor; 3, hydraulic protection module; 301, oil outlet pipe; 302, agglomeration frame; 303, sleeve; 304, agglomeration cavity; 305, rigid spring; 306, flat opening; 307, drainage opening; 308, fixing frame; 309, baffle; 310, slope plate; 311, positioning shaft; 312, roller; 313, return hole; 314, conduction piece; 315, ejector rod; 316, temperature and pressure box; 317, piston plate; 4, liquid inlet pipe; 41, main pipe; 42, sub-pipe; 5, liquid return pipe; 51, protection pipe; 52, hose; 6, cylinder block; 7, cooling component; 71, nitrogen tank; 72, cooling pipe; 73, diversion pipe; 74, spiral piece; 75, intermediate cavity; 8, confluence frame; 9, control pipeline. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1-7, A hydraulic control device for a multi-cylinder hydraulic cone crusher, comprising a frame body 1; a hydraulic motor 2; a cylinder block 6 with hydraulic oil inside; a manifold frame 8; a control pipeline 9; a protection circuit; a hydraulic protection module 3, which is used to control the flow of hydraulic oil from the protection circuit after high pressure is generated during the operation of the hydraulic motor 2; the hydraulic protection module 3 includes a temperature protection component and a pressure protection component; the temperature protection component is used to protect the hydraulic oil when it reaches a certain high temperature; the pressure protection component is used to protect the hydraulic motor 2 when it operates under high pressure.

[0020] In this embodiment, a pump body is arranged inside the cylinder block 6. The pump body guides the hydraulic oil in the cylinder block 6 to the manifold frame 8 through the control pipeline 9. The hydraulic oil in the manifold frame 8 passes through the hydraulic protection module 3 and is then conveyed into the hydraulic motor 2 through the inlet pipe 4. A return pipe 5 is also arranged on the hydraulic motor 2, and the return pipe 5 returns the hydraulic oil back into the interior of the cylinder block 6 through the cooling component 7. The pump body operates inside the cylinder block 6, conveying the hydraulic oil from the control pipeline 9 to the manifold frame 8 to provide circulating power for the oil. The operating principle of the entire hydraulic motor 2 is to convert the liquid pressure energy into mechanical energy. Power source: The hydraulic motor is based on high-pressure oil as the power source, which is provided by the hydraulic pump. Energy conversion: The high-pressure oil generated by the pump body transfers the pressure energy to the interior of the hydraulic motor. Movement of internal components: The hydraulic components inside the motor rotate or reciprocate under the push of the high-pressure oil. Driving the equipment: These rotations or reciprocations then drive the mechanical equipment to work.

[0021] Furthermore, the pressure protection component includes a fixing frame 308 fixed on the frame body 1. The right side of the fixing frame 308 is connected to the manifold frame 8. An oil outlet pipe 301 is installed on the fixing frame 308. A sleeve 303 is sleeved on the oil outlet pipe 301. An aggregation frame 302 is fixedly connected to the sleeve 303. The aggregation frame 302 is slidably connected inside the fixing frame 308. A rigid spring 305 is sleeved on the sleeve 303. One end of the rigid spring 305 is connected to the aggregation frame 302, and the other end is connected to the fixing frame 308. An aggregation cavity 304 is arranged inside the aggregation frame 302. One end of the inlet pipe 4 is slidably connected inside the sleeve 303, and the other end is connected to the hydraulic motor 2. The hydraulic oil is injected into the aggregation cavity 304 inside the aggregation frame 302 through multiple oil outlet pipes 301. Then the hydraulic oil will enter the interiors of two main pipes 41 through the two sleeves 303, and then the hydraulic oil is injected into the hydraulic motor 2 to drive the operation of the hydraulic motor 2. After that, the crusher will feel the power and operate, thus achieving the crushing effect.

[0022] Furthermore, the liquid inlet pipe 4 includes a main pipe 41 and a sub-pipe 42. There are two sleeves 303, and the main pipe 41 and the sub-pipe 42 are respectively sleeved inside the two sleeves 303. A drainage port 307 is provided inside the sleeve 303 on the sub-pipe 42. When the hydraulic motor 2 is crushing harder stones, the internal pressure of the hydraulic oil entering the hydraulic motor 2 will increase. When a single pipeline is difficult to drive the hydraulic motor 2 to operate and crush at this time, the oil pressure will act inside the agglomeration frame 302, and then push the agglomeration frame 302 to slide on the main pipe 41 and the sub-pipe 42, squeezing a plurality of rigid springs 305. After squeezing a certain distance, the drainage port 307 below the sub-pipe 42 will enter the inside of the agglomeration chamber 304. At this time, the hydraulic oil will be diverted into the inside of the sub-pipe 42, and then enter the inside of the hydraulic motor 2 through the pipeline. At this time, it is equivalent to injecting pressure into the hydraulic motor 2 through the two pipelines of the main pipe 41 and the sub-pipe 42, instantaneously increasing the power of the hydraulic motor 2, and sharing the oil pressure through the two pipelines to ensure the stable operation of the hydraulic pipeline, and then crushing some harder stones.

[0023] In addition, the protection circuit includes a protection pipe 51. One end of the protection pipe 51 is connected to a hose 52, the other end of the protection pipe 51 is connected to the cooling member 7, and one end of the hose 52 is communicated with the agglomeration frame 302. A baffle 309 is slidably connected inside the agglomeration frame 302. The top of the baffle 309 is connected to a positioning shaft 311. A roller 312 is rotatably connected to the surface of the positioning shaft 311. The top of the fixed frame 308 is fixedly connected to a slope plate 310. A return hole 313 is provided on the baffle 309. When the overpressure and over-temperature states are triggered, at this time, the agglomeration frame 302 will move left to the limit position, and then drive the roller 312 on the baffle 309 to slide left and slide onto the slope plate 310. Utilizing the sliding of the inclined plane, the baffle 309 is driven to slide and rise through the positioning shaft 311. At this time, the return hole 313 will move up to form a conduction state with the hose 52. After that, the internal oil pressure of the agglomeration frame 302 will enter the inside of the protection pipe 51 from the inside of the hose 52, and then flow back into the inside of the cooling pipe 72. At this time, a hydraulic circuit without pressure load is formed, providing effective protection for the hydraulic pipeline.

[0024] In addition, the temperature protection component includes a temperature and pressure box 316, which is installed on the gathering frame 302. A plurality of conduction sheets 314 are arranged inside the temperature and pressure box 316. One end of the conduction sheet 314 passes through and extends into the interior of the gathering frame 302. A piston plate 317 is slidably connected inside the temperature and pressure box 316. A push rod 315 is fixedly connected to the piston plate 317. The top of the push rod 315 abuts against the positioning shaft 311. Flat openings 306 are formed at both ends of the positioning shaft 311. The hydraulic oil inside the gathering frame 302 radiates heat to the conduction sheet 314, and then radiates to the air inside the temperature and pressure box 316. The top of the push rod 315 abuts against the positioning shaft 311. When the hydraulic oil operates under long-term or high-load conditions, the oil temperature rises sharply, and the cooling component 7 cannot achieve rapid cooling. At this time, the high-temperature hydraulic oil inside the gathering frame 302 will radiate and conduct the temperature to the conduction sheet 314, and then the conduction sheet 314 will radiate the high temperature to the surrounding air. At this time, due to the principle of thermal expansion and contraction, it will push the piston plate 317 to slowly rise, and then drive the push rod 315 to rise. Due to the abutment, it will drive the positioning shaft 311 to move upward, and finally drive the baffle 309 to move upward, connecting the return hole 313 with the end of the hose 52, so that the oil fluid flows from the protection circuit and does not flow through the equipment, realizing over-temperature protection for the equipment.

[0025] It should be noted that two sets of hydraulic motors 2, protection circuits and inlet pipes 4 are provided, and two sets of temperature protection components are provided. The two sets of temperature protection components are symmetrically distributed with the center line of the gathering frame 302 as the axis of symmetry. Since the crusher may require two powers to drive with a large torque, two hydraulic motors 2 are provided to drive the crusher to improve the crushing effect of the crusher. Further, the cooling component 7 includes a nitrogen tank 71 and a cooling pipe 72. A certain concentration of nitrogen mixture is arranged inside the nitrogen tank 71. An inner cavity and an intermediate cavity 75 are arranged inside the cooling pipe 72. The nitrogen mixture inside the nitrogen tank 71 is injected into the intermediate cavity 75 through a pipeline. The return pipe 5 is connected to the inside of the inner cavity. A diversion pipe 73 is connected to the cooling pipe 72, and the diversion pipe 73 is connected to the cylinder block 6.

[0026] Furthermore, spiral fins 74 are symmetrically arranged inside the cooling pipe 72. Two return pipes 5 are provided, and the two return pipes 5 are respectively connected to both sides of the cooling pipe 72. Through the arrangement of the spiral fins 74, the hydraulic oil can flow in a spiral manner, increasing the overall flow time of the oil fluid in the cooling pipe 72, facilitating the low-temperature radiation cooling of the nitrogen mixture. Through the nitrogen mixture filled inside the nitrogen tank 71 provided, the low temperature can be radiated to the inside of the cooling pipe 72, and then the spiral-flowing hydraulic oil is radiated and cooled. Because the property of nitrogen is low temperature, the low-temperature characteristic of nitrogen is used to radiate and cool the hydraulic oil.

[0027] Working principle: First, when the entire device is running, that is, when the hydraulic motor 2 drives the cone crusher as the power source, the pump body needs to run inside the cylinder block 6 at this time, delivering hydraulic oil from the control pipeline 9 to the manifold 8, and then injecting it into the accumulation chamber 304 inside the accumulation frame 302 through multiple outlet pipes 301. After that, the hydraulic oil will enter the interiors of the two main pipes 41 through the two sleeves 303, and then the hydraulic oil is injected into the hydraulic motor 2 to drive the operation of the hydraulic motor 2. After that, the crusher will receive power and operate, thus achieving the crushing effect. After the hydraulic oil passes through the hydraulic motor 2, it will flow into the two return pipes 5 of the hydraulic motor 2, and then enter the interior of the cooling pipe 72. Affected by the spiral structure of the spiral fins 74, the hydraulic oil will slowly enter the middle of the cooling pipe 72 in a spiral manner, and then flow back to the interior of the cylinder block 6 from the position of the diversion pipe 73. The nitrogen mixture filled in the nitrogen tank 71 provided can radiate low temperature to the interior of the cooling pipe 72, thereby radiatively cooling the spirally flowing hydraulic oil. Because the property of nitrogen is low temperature, the low-temperature characteristic of nitrogen is used to radiatively cool the hydraulic oil. When the hydraulic motor 2 crushes harder stones, the pressure of the hydraulic oil entering the hydraulic motor 2 will increase at this time. When it is difficult for a single pipeline to drive the operation of the hydraulic motor 2 for crushing at this time, the oil pressure will act inside the accumulation frame 302, thereby pushing the accumulation frame 302 to slide on the main pipe 41 and the auxiliary pipe 42, squeezing the multiple rigid springs 305. After squeezing a certain distance, the drainage port 307 below the auxiliary pipe 42 will enter the interior of the accumulation chamber 304 at this time, and the hydraulic oil will be diverted into the interior of the auxiliary pipe 42, and then enter the hydraulic motor 2 through the pipeline. At this time, it is equivalent to injecting pressure into the hydraulic motor 2 through the two pipelines of the main pipe 41 and the auxiliary pipe 42, instantaneously increasing the power of the hydraulic motor 2, and sharing the oil pressure through the two pipelines to ensure the stable operation of the hydraulic pipeline, thereby crushing some harder stones. Why not use two pipelines to operate the hydraulic motor 2 at the initial stage? The reason is that the power of the hydraulic motor 2 is fixed. If the two pipelines are used to apply pressure for a long time, it will have a certain impact on the operation of the hydraulic motor 2. And this instantaneous pressure sharing and the pressurization process of the hydraulic motor 2 can increase the torque of the hydraulic motor 2 in an instantaneous state, so the impact on the operation of the hydraulic motor 2 will be relatively low. After the harder stones are crushed, the pressure transmitted from the crusher to the hydraulic motor 2 will decrease at this time. At this time, the multiple rigid springs 305 will provide a reverse thrust to control the reset sliding of the accumulation frame 302, thereby slidingly blocking the drainage port 307 again, and the oil fluid will flow from the position of the single main pipe 41 again, thus achieving single-pipe light-load operation.When the entire hydraulic pipeline is subjected to extremely high pressure, that is, when the broken stones prevent the hydraulic motor 2 from achieving the crushing state, or when the hydraulic pipeline cannot control the operation of the hydraulic motor 2 under the current high pressure, the agglomeration frame 302 will move leftward to the extreme position, thereby driving the roller 312 on the baffle 309 to slide leftward and slide onto the slope plate 310. By utilizing the sliding on the inclined plane, the baffle 309 is driven to slide upward through the positioning shaft 311. At this time, the return hole 313 will move upward to form a conduction state with the hose 52. Then, the oil pressure inside the agglomeration frame 302 will enter the inside of the protective pipe 51 from the inside of the hose 52, and then flow back into the inside of the cooling pipe 72. At this time, a hydraulic circuit with no pressure load is formed. At this time, the circuit of the hydraulic motor 2 will not flow, and the hydraulic motor 2 will be stuck at this pressure, waiting for the subsequent operator to remove the stones stuck in the crusher. Therefore, the overall hydraulic pipeline will form a protection circuit to provide pressure protection for the entire equipment, avoiding burst pipes caused by excessive pipeline pressure and damage to each valve due to excessive pressure, thereby achieving automatic trigger protection under the automatic control of the hydraulic pipeline. The entire equipment is also provided with overheat protection. When the hydraulic oil runs for a long time or under high load, the oil temperature rises rapidly, and the cooling component 7 cannot achieve rapid cooling. At this time, the high-temperature hydraulic oil inside the agglomeration frame 302 will radiate the temperature to the conduction piece 314, and then the conduction piece 314 will radiate the high temperature to the surrounding air. At this time, due to the principle of thermal expansion and contraction, the piston plate 317 will be slowly pushed upward, and then the ejector rod 315 will be driven to rise. Due to the abutment, the positioning shaft 311 will be driven to move upward, and finally the baffle 309 will be driven to move upward, connecting the return hole 313 with the end of the hose 52, so that the oil fluid will flow from the protection circuit and not pass through the equipment. Because the oil fluid needs pressure to drive the equipment, and there is no equipment load in the protection circuit at this time, the oil fluid will flow from the circuit with no pressure. Therefore, through the flow of the protection circuit and then through the position of the cooling component 7 for cooling, the circuit flow cooling under no load is achieved. Until the oil temperature inside the agglomeration frame 302 decreases cyclically, the baffle 309 is controlled to move downward using the principle of cold contraction to achieve automatic sealing of the protection circuit, and then the equipment is driven by oil pressure again.

[0028] In summary, the overall hydraulic circuit will automatically generate instantaneous high torque, as well as protection under high pressure and high temperature, effectively protecting the entire hydraulic system, thereby ensuring the stable operation of the entire equipment, directly avoiding burst pipes, pressure damage to valves and pumps, and indirectly improving the overall service life of the equipment.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A hydraulic control device for a multi-cylinder hydraulic cone crusher, characterized in that, Comprising: Frame body (1); Hydraulic motor (2); Cylinder block (6), inside which there is hydraulic oil; Confluence frame (8); Control pipeline (9); Protection circuit; Hydraulic protection module (3), used to control the flow of hydraulic oil from the protection circuit after high pressure is generated during the operation of the hydraulic motor (2); The hydraulic protection module (3) includes a temperature protection component and a pressure protection component; The temperature protection component is used to protect the hydraulic oil after it reaches a certain high temperature; The pressure protection component is used to form protection when the high pressure generated during the operation of the hydraulic motor (2) acts; A pump body is arranged inside the cylinder block (6), the pump body guides the hydraulic oil in the cylinder block (6) to the confluence frame (8) through the control pipeline (9), the hydraulic oil in the confluence frame (8) is transported into the hydraulic motor (2) through the hydraulic protection module (3) via the liquid inlet pipe (4), a liquid return pipe (5) is also arranged on the hydraulic motor (2), and the liquid return pipe (5) reflows the hydraulic oil back into the inside of the cylinder block (6) through the cooling component (7).

2. The hydraulic control device of a multi-cylinder hydraulic cone crusher according to claim 1, characterized in that: The pressure protection component includes a fixing frame (308), the fixing frame (308) is fixed on the frame body (1), the right side of the fixing frame (308) is connected to the confluence frame (8), an oil outlet pipe (301) is installed on the fixing frame (308), a sleeve (303) is sleeved on the oil outlet pipe (301), an aggregation frame (302) is fixedly connected to the sleeve (303), the aggregation frame (302) is slidably connected inside the fixing frame (308), a rigid spring (305) is sleeved on the sleeve (303), one end of the rigid spring (305) is connected to the aggregation frame (302), the other end of the rigid spring (305) is connected to the fixing frame (308), an aggregation cavity (304) is arranged inside the aggregation frame (302), one end of the liquid inlet pipe (4) is slidably connected inside the sleeve (303), and the other end of the liquid inlet pipe (4) is connected to the hydraulic motor (2).

3. The hydraulic control device of a multi-cylinder hydraulic cone crusher according to claim 2, characterized in that: The liquid inlet pipe (4) includes a main pipe (41) and a sub-pipe (42), there are two sleeves (303), and the main pipe (41) and the sub-pipe (42) are respectively sleeved inside the two sleeves (303), and a drainage port (307) is opened on the sub-pipe (42) inside the sleeve (303).

4. The hydraulic control device of a multi-cylinder hydraulic cone crusher according to claim 3, characterized in that: The protection circuit includes a protection pipe (51), one end of the protection pipe (51) is connected to a hose (52), the other end of the protection pipe (51) is connected to the cooling component (7), and one end of the hose (52) is communicated with the aggregation frame (302).

5. The hydraulic control device of a multi-cylinder hydraulic cone crusher according to claim 4, characterized in that: A baffle (309) is slidably connected inside the aggregation frame (302), a positioning shaft (311) is connected to the top of the baffle (309), a roller (312) is rotatably connected to the surface of the positioning shaft (311), a slope plate (310) is fixedly connected to the top of the fixing frame (308), and a return hole (313) is opened on the baffle (309).

6. The hydraulic control device of a multi-cylinder hydraulic cone crusher according to claim 5, characterized in that: The temperature preservation component includes a temperature and pressure box (316), the temperature and pressure box (316) is installed on the agglomeration frame (302), a plurality of conduction sheets (314) are arranged inside the temperature and pressure box (316), one end of the conduction sheet (314) passes through and extends into the inside of the agglomeration frame (302), a piston plate (317) is slidably connected inside the temperature and pressure box (316), a push rod (315) is fixedly connected to the piston plate (317), the top of the push rod (315) abuts against the positioning shaft (311), flat openings (306) are formed at both ends of the positioning shaft (311), the hydraulic oil inside the agglomeration frame (302) radiates the temperature to the conduction sheet (314), and then to the air inside the temperature and pressure box (316), and the top of the push rod (315) abuts against the positioning shaft (311).

7. The hydraulic control device of a multi-cylinder hydraulic cone crusher according to claim 2, characterized in that: Two sets of the hydraulic motors (2), protection circuits and liquid inlet pipes (4) are provided, two sets of temperature preservation components are provided, and the two sets of temperature preservation components are symmetrically distributed with the center line of the agglomeration frame (302) as the axis of symmetry.

8. The hydraulic control device of a multi-cylinder hydraulic cone crusher according to claim 1, characterized in that: The cooling component (7) includes a nitrogen gas tank (71) and a cooling pipe (72), a certain concentration of nitrogen gas mixture is arranged inside the nitrogen gas tank (71), an inner cavity and an intermediate cavity (75) are arranged inside the cooling pipe (72), the nitrogen gas mixture inside the nitrogen gas tank (71) is injected into the inside of the intermediate cavity (75) through a pipeline, the liquid return pipe (5) is communicated inside the inner cavity, a diversion pipe (73) is communicated with the cooling pipe (72), and the diversion pipe (73) is communicated with the cylinder block (6).

9. The hydraulic control device of a multi-cylinder hydraulic cone crusher according to claim 8, characterized in that: Spiral fins (74) are symmetrically arranged inside the cooling pipe (72), two liquid return pipes (5) are provided, and the two liquid return pipes (5) are respectively communicated with both sides of the cooling pipe (72).

Images