A hydraulic control device for a multi-cylinder hydraulic cone crusher

Abstract

The present invention relates to the field of hydraulic control technology, and discloses a hydraulic control device for a multi-cylinder hydraulic cone crusher, comprising: a frame; a hydraulic motor; a cylinder, wherein hydraulic oil is provided inside the cylinder; a manifold; a control pipeline; a protection circuit; and 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 control device for the multi-cylinder hydraulic cone crusher can, through the provided hydraulic protection module, trigger pipeline protection when the crusher has exceeded the pressure load of two hydraulic pipelines, so that the entire 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 entire equipment, utilizing automatic control of the hydraulic pipeline to achieve protection of the hydraulic pipeline and improve the overall operating life of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic control, in particular 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 three millimeters in the discharge material accounts for more than 50% of the total discharge volume. Crushing operations are often divided into coarse crushing, medium crushing and fine crushing according to the size of the feed and discharge particle sizes. Commonly used sand and gravel equipment include jaw crusher, jaw crusher, impact crusher, impact crusher, compound crusher, single-stage hammer crusher, vertical crusher, gyratory crusher, cone crusher, roller crusher, double-roller crusher, etc.

[0003] At present, hydraulic cone crushers are used to crush some stones in actual work. Hydraulic crushing is adopted. Hydraulic crushers are driven by hydraulic systems and have strong power output and efficient working performance. They can perform well when dealing with hard raw materials. In comparison, traditional motor crushers are relatively weak in terms of power and efficiency, especially when dealing with hard materials. The effect may not be as good as hydraulic crushers. However, hydraulic crushing also has certain defects. For example, hydraulic crushing drives the hydraulic motor to rotate by the flow of hydraulic oil to transmit power. When the equipment is in the crushing process, if there are harder stones, the pressure in the pipeline will be very high during the crushing process, and it is easy for the hydraulic pipe to burst. In addition, with the increase of hydraulic oil temperature, the high temperature causes the oil to become thinner, the lubrication ability is reduced, and the wear of components such as pumps and valves is 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] (1) Technical problems solved

[0005] In response to the shortcomings of the existing technology, the present invention provides a hydraulic control device for a multi-cylinder hydraulic cone crusher, which solves the problem in the existing technology that when the hydraulic module copes with some high-pressure work, the pipeline pressure may be too high, causing the oil pipe to burst or the valve to leak. In addition, under high-pressure operation, the internal hydraulic oil may easily heat up quickly, affecting the overall operation of the equipment.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a hydraulic control device for a multi-cylinder hydraulic cone crusher, comprising: a frame; a hydraulic motor; a cylinder, wherein the cylinder is provided with hydraulic oil; a manifold; a control pipeline; a protection circuit; a hydraulic protection module, which is used to control the hydraulic oil to flow from the protection circuit after high pressure is generated during the operation of the hydraulic motor; the hydraulic protection module comprises a thermal insulation component and a pressure insulation component; the thermal insulation component is used to protect the hydraulic oil after a certain high temperature is generated; the pressure insulation component is used to provide protection when the hydraulic motor is working at high pressure; a pump body is provided inside the cylinder, the pump body guides the hydraulic oil in the cylinder to the manifold through the control pipeline, and the hydraulic oil in the manifold is transported to the hydraulic motor through the liquid inlet pipe through the hydraulic protection module, and a return liquid pipe is also provided on the hydraulic motor, and the return liquid pipe returns the hydraulic oil to the interior of the cylinder through a cooling member.

[0008] Preferably, the pressure maintenance assembly includes a fixed frame, which is fixed on the frame body, the right side of the fixed frame is connected to the bus frame, an oil outlet pipe is installed on the fixed frame, a sleeve is sleeved on the oil outlet pipe, a gathering frame is fixedly connected to the sleeve, the gathering frame is slidably connected to the inside of the fixed frame, a rigid spring is sleeved on the sleeve, one end of the rigid spring is connected to the gathering frame, the other end of the rigid spring is connected to the fixed frame, a gathering cavity is provided inside the gathering frame, one end of the liquid inlet pipe is slidably connected to the inside of the sleeve, and the other end of the liquid inlet pipe is connected to the hydraulic motor.

[0009] Preferably, the liquid inlet pipe includes a main pipe and a sub-pipe, two sleeves are provided, and the main pipe and the sub-pipe are respectively sleeved inside the two sleeves, and a drainage port is opened on the sub-pipe inside the sleeve.

[0010] Preferably, the protection circuit includes a protection tube, one end of the protection tube is connected to a hose, the other end of the protection tube is connected to a cooling element, and one end of the hose is communicated with an aggregation rack.

[0011] Preferably, a baffle is slidably connected inside the aggregation rack, the top of the baffle is connected to a positioning shaft, the surface of the positioning shaft is rotatably connected to a roller, the top of the fixed frame is fixedly connected to a ramp, and a return hole is provided on the baffle. Preferably, the thermal insulation component includes a temperature-controlled box, the temperature-controlled box is installed on the aggregation rack, a plurality of conduction plates are provided inside the temperature-controlled box, one end of the conduction plate passes through and extends to the interior of the aggregation rack, the interior of the temperature-controlled box is slidably connected to a piston plate, a push rod is fixedly connected to the piston plate, the top of the push rod abuts against the positioning shaft, and flat ends are provided at both ends of the positioning shaft. The hydraulic oil inside the aggregation rack radiates the temperature to the conduction plate, and then radiates to the air inside the temperature-controlled box, and the top of the push rod abuts against the positioning shaft.

[0012] Preferably, the hydraulic motor, protection circuit and liquid inlet pipe are each provided with two groups, the thermal insulation components are provided with two groups, and the two groups of thermal insulation components are symmetrically distributed with the center line of the cluster frame as the symmetry axis.

[0013] Preferably, the cooling element includes a nitrogen tank and a cooling pipe, the interior of the nitrogen tank is provided with a nitrogen mixture of a certain concentration, the interior of the cooling pipe is provided with an inner cavity and an intermediate cavity, the internal nitrogen mixture of the nitrogen tank is injected into the interior of the intermediate cavity through a pipeline, the return liquid pipe is connected to the interior of the inner cavity, the cooling pipe is connected to a guide pipe, and the guide pipe is connected to the cylinder body.

[0014] Preferably, spiral sheets are symmetrically arranged inside the cooling pipe, and two liquid return pipes are provided, and the two liquid return pipes are respectively connected to the two sides of the cooling pipe.

[0015] (3) Beneficial effects

[0016] 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:

[0017] 1. The hydraulic control device of this multi-cylinder hydraulic cone crusher, equipped with a hydraulic protection module, can, when the hydraulic motor drives the crusher and crushes very hard rocks, if the oil pressure exceeds a certain level, it will supply oil to the hydraulic motor through two pipelines, instantly increasing the hydraulic motor's torque. Furthermore, when the entire equipment is operating and the crusher exceeds the pressure load of the two hydraulic pipelines, the pipeline protection function will be triggered, preventing the oil from flowing through the hydraulic motor circuit and instead flowing through the protection circuit, thus providing pressure protection for the pipelines and the entire equipment. Utilizing automatic control of the hydraulic pipelines, it protects the hydraulic pipelines and extends the overall operating life of the equipment.

[0018] 2. The hydraulic control device of the multi-cylinder hydraulic cone crusher can radiate the temperature to the sealed cavity when the oil temperature reaches a certain degree Celsius through the temperature and pressure component. Then, by utilizing the principle of thermal expansion and contraction of air, it triggers the rise of the push rod, which in turn triggers the circulation of the protection circuit, realizing high-temperature protection under hydraulic automatic control, and further improving the operating stability of the equipment from the side.

[0019] 3. The hydraulic control device of the multi-cylinder hydraulic cone crusher can utilize the low-temperature radiation of the low-temperature mixture through the cooling element. When the hydraulic oil flows in the circuit, it passes through the cooling element and then radiates and cools the hydraulic oil itself, further maintaining the overall flow stability of the hydraulic pipeline, protecting the operation of some components of the pump and valve, and preventing the high temperature of the hydraulic oil from affecting the overall operation of the hydraulic motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a hydraulic control device for a multi-cylinder hydraulic cone crusher proposed by the present invention;

[0021] Figure 2 This is a schematic diagram of the connection structure of the liquid inlet pipe of the hydraulic control device of a multi-cylinder hydraulic cone crusher proposed by the present invention;

[0022] Figure 3 This is a schematic diagram of the fixed frame connection structure of the hydraulic control device of a multi-cylinder hydraulic cone crusher proposed by the present invention;

[0023] Figure 4 This is a schematic diagram of the baffle connection structure of the hydraulic control device of a multi-cylinder hydraulic cone crusher proposed by the present invention;

[0024] Figure 5 This is a schematic structural diagram of a thermal insulation component of a hydraulic control device for a multi-cylinder hydraulic cone crusher proposed by the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of an aggregation frame of a hydraulic control device for a multi-cylinder hydraulic cone crusher proposed by the present invention;

[0026] Figure 7 This is a schematic diagram of the cooling component structure of the hydraulic control device of a multi-cylinder hydraulic cone crusher proposed by the present invention.

[0027] In the figure: 1. Frame; 2. Hydraulic motor; 3. Hydraulic protection module; 301. Oil outlet pipe; 302. Gathering frame; 303. Casing; 304. Gathering chamber; 305. Rigid spring; 306. Flat mouth; 307. Drainage port; 308. Fixed frame; 309. Baffle; 310. Slope plate; 311. Positioning shaft; 312. Roller; 313. Return hole; 314. Conducting plate; 315. Push rod; 316. Temperature and pressure box; 317. Piston plate; 4. Liquid inlet pipe; 41. Main pipe; 42. Auxiliary pipe; 5. Liquid return pipe; 51. Protective pipe; 52. Hose; 6. Cylinder; 7. Cooling element; 71. Nitrogen tank; 72. Cooling pipe; 73. Guide pipe; 74. Spiral sheet; 75. Intermediate chamber; 8. Manifold; 9. Control pipeline. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 7 A hydraulic control device for a multi-cylinder hydraulic cone crusher includes a frame 1; a hydraulic motor 2; a cylinder 6, wherein hydraulic oil is arranged inside the cylinder 6; a manifold 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 when the hydraulic motor 2 is running; the hydraulic protection module 3 includes a thermal insulation component and a pressure insulation component; the thermal insulation component is used to protect the hydraulic oil after it generates a certain high temperature; the pressure insulation component is used to provide protection when the hydraulic motor 2 is in operation and generates high pressure.

[0030] In this embodiment, a pump is installed inside cylinder 6. This pump directs the hydraulic oil within cylinder 6 through control line 9 to manifold 8. The hydraulic oil within manifold 8 then flows through hydraulic protection module 3 and into hydraulic motor 2 through inlet pipe 4. Hydraulic motor 2 is also equipped with a return pipe 5, which returns the hydraulic oil to the interior of cylinder 6 via cooling element 7. The pump operates within cylinder 6, transferring the hydraulic oil from control line 9 to manifold 8, providing circulation power for the oil. The operating principle of hydraulic motor 2 is to convert liquid pressure energy into mechanical energy. The power source is high-pressure oil, provided by the hydraulic pump. Energy conversion is achieved by transferring pressure energy generated by the pump to the interior of the hydraulic motor. Internal component movement is achieved by rotating or reciprocating the hydraulic components within the motor under the influence of the high-pressure oil. This rotational or reciprocating motion, in turn, drives the mechanical equipment.

[0031] Furthermore, the pressure protection assembly includes a fixed frame 308, which is fixed on the frame body 1, and the right side of the fixed frame 308 is connected to the bus frame 8. An oil outlet pipe 301 is installed on the fixed frame 308, and a sleeve 303 is sleeved on the oil outlet pipe 301. The sleeve 303 is fixedly connected to a gathering frame 302, and the gathering frame 302 is slidably connected to the inside of the fixed frame 308. A rigid spring 305 is sleeved on the sleeve 303, and one end of the rigid spring 305 is connected to the gathering frame 302, and the other end of the rigid spring 305 is connected to the fixed frame 308. A gathering cavity 304 is provided inside the gathering frame 302, and one end of the liquid inlet pipe 4 is slidably connected to the inside of the sleeve 303, and the other end of the liquid inlet pipe 4 is connected to the hydraulic motor 2. The hydraulic oil is injected into the gathering cavity 304 inside the gathering frame 302 through multiple oil outlet pipes 301, and then enters the interior of the two main pipes 41 through the two sleeves 303, and then the hydraulic oil is injected into the interior of the hydraulic motor 2 to drive the operation of the hydraulic motor 2. After that, the crusher will feel the power and operate, thereby achieving the crushing effect.

[0032] Furthermore, the liquid inlet pipe 4 includes a main pipe 41 and a secondary pipe 42. Two sleeves 303 are provided, and the main pipe 41 and the secondary pipe 42 are respectively sleeved inside the two sleeves 303. A drainage port 307 is opened on the secondary pipe 42 inside the sleeve 303. When the hydraulic motor 2 is crushing harder stones, the internal pressure of the hydraulic oil entering the hydraulic motor 2 will increase. When it is difficult for one pipeline to drive the hydraulic motor 2 to perform crushing, the oil pressure will act on the inside of the gathering frame 302, thereby pushing the gathering 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 under the auxiliary pipe 42 will enter the inside of the gathering cavity 304. At this time, the hydraulic oil will be diverted into the inside of the auxiliary 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 auxiliary pipe 42, instantaneously increasing the power of the hydraulic motor 2, and sharing the oil pressure through the two pipelines, so as to ensure the stable operation of the hydraulic pipeline, and then crush some harder stones.

[0033] In addition, the protection circuit includes a protective tube 51, one end of which is connected to a hose 52. The other end of the protective tube 51 is connected to the cooling element 7. One end of the hose 52 is connected to the collection frame 302. A baffle 309 is slidably connected to the collection frame 302. The top of the baffle 309 is connected to a positioning shaft 311. The surface of the positioning shaft 311 is rotatably connected to a roller 312. A ramp 310 is fixedly connected to the top of the fixed frame 308. The baffle 309 is provided with a return hole 313. When the over-pressure and over-temperature state is triggered, the gathering rack 302 will move to the left to the extreme position, thereby driving the roller 312 on the baffle 309 to slide to the left and slide onto the ramp 310. The sliding of the inclined surface will drive the baffle 309 to slide up through the positioning shaft 311. At this time, the reflux hole 313 will move up and form a conductive state with the hose 52. After that, the internal oil pressure of the gathering rack 302 will enter the inside of the protective tube 51 from the inside of the hose 52, and then flow back to the inside of the cooling tube 72. At this time, a hydraulic circuit without pressure load is formed, forming effective protection for the hydraulic pipeline.

[0034] In addition, the thermal insulation component includes a temperature-pressure box 316, which is installed on the aggregation rack 302. A plurality of conduction plates 314 are arranged inside the temperature-pressure box 316. One end of the conduction plate 314 passes through and extends to the interior of the aggregation rack 302. The interior of the temperature-pressure box 316 is slidably connected to a piston plate 317, and 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 ends 306 are provided at both ends of the positioning shaft 311. The hydraulic oil inside the aggregation rack 302 radiates the temperature to the conduction plate 314, and then radiates to the air inside the temperature-pressure box 316. The top of the push rod 315 abuts against the positioning shaft 311. When the hydraulic oil is running for a long time or under high load, the oil temperature rises sharply and the cooling part 7 cannot achieve rapid cooling. At this time, the high-temperature hydraulic oil inside the aggregation rack 302 will radiate the temperature to the conduction plate 314, and then the conduction plate 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 pushed to rise slowly, and then the push 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 will flow from the protection circuit and will not flow through the equipment, thereby realizing over-temperature protection for the equipment.

[0035] It is worth noting that two groups of hydraulic motors 2, protection circuits and liquid inlet pipes 4 are provided, two groups of thermal insulation components are provided, and the two groups of thermal insulation components are symmetrically distributed with the center line of the aggregation frame 302 as the symmetry axis. Because the crusher may require two power sources to drive with a larger torque, two hydraulic motors 2 are provided to transmit the crusher to improve the crushing effect of the crusher. Furthermore, the cooling part 7 includes a nitrogen tank 71 and a cooling pipe 72. The interior of the nitrogen tank 71 is provided with a nitrogen mixture of a certain concentration. The interior of the cooling pipe 72 is provided with an inner cavity and an intermediate cavity 75. The internal nitrogen mixture of the nitrogen tank 71 is injected into the interior of the intermediate cavity 75 through a pipeline. The return liquid pipe 5 is connected to the interior of the inner cavity. The cooling pipe 72 is connected with a guide pipe 73, and the guide pipe 73 is connected to the cylinder body 6.

[0036] Furthermore, the cooling tube 72 is symmetrically provided with spiral blades 74. Two return pipes 5 are provided, each connected to one side of the cooling tube 72. The spiral blades 74 allow the hydraulic oil to flow in a spiral pattern, increasing the overall oil flow time in the cooling tube 72 and facilitating low-temperature radiative cooling of the nitrogen mixture. The nitrogen mixture, which fills the interior of the nitrogen tank 71, radiates low temperatures into the interior of the cooling tube 72, thereby radiatively cooling the spirally flowing hydraulic oil. Because nitrogen is cryogenic, this low-temperature characteristic of nitrogen is utilized to radiatively cool the hydraulic oil.

[0037] Working principle: first, when the entire equipment is in operation, that is, when the hydraulic motor 2 is used as the power to drive the cone crusher, the pump body needs to run inside the cylinder body 6 to transport the hydraulic oil from the control pipeline 9 to the manifold 8, and then inject it into the gathering cavity 304 inside the gathering frame 302 through multiple oil outlet pipes 301. After that, the hydraulic oil will pass through the two sleeves 303 into the inside of the two main pipes 41, and then inject the hydraulic oil into the inside of the hydraulic motor 2 to drive the operation of the hydraulic motor 2. After that, the crusher will feel the power and operate, thereby achieving the crushing effect. After the hydraulic oil passes through the hydraulic motor 2, it will flow into the return pipe 5 of the two hydraulic motors 2, and then enter the interior of the cooling pipe 72. Due to the influence of the spiral structure of the spiral sheet 74, the hydraulic oil will slowly spiral into the middle of the cooling pipe 72, and then flow back to the interior of the cylinder body 6 from the position of the guide pipe 73. The nitrogen mixture filled in the nitrogen tank 71 can radiate low temperature to the interior of the cooling pipe 72, and then radiate cooling to the spirally flowing hydraulic oil. Because the nature of nitrogen is low temperature, the low temperature characteristics of nitrogen are used to perform low-temperature radiation cooling on the hydraulic oil. When the hydraulic motor 2 is crushing harder stones, the internal pressure of the hydraulic oil entering the hydraulic motor 2 will increase. When it is difficult for one pipeline to drive the hydraulic motor 2 to perform crushing, the oil pressure will act on the inside of the gathering frame 302, thereby pushing the gathering 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 under the auxiliary pipe 42 will enter the inside of the gathering cavity 304. At this time, the hydraulic oil will be diverted into the inside of the auxiliary 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 auxiliary pipe 42, instantaneously increasing the power of the hydraulic motor 2, and sharing the oil pressure through the two pipelines, so as to ensure the stable operation of the hydraulic pipeline, and then crush some harder stones. Why aren't two pipelines used to operate the hydraulic motor 2 in the initial stage? The reason is that the power of the hydraulic motor 2 is fixed. If it operates using two pipeline pressures for a long time, it will have a certain impact on the operation of the hydraulic motor 2. This instantaneous pressure division and pressurization of the hydraulic motor 2 can increase the torque of the hydraulic motor 2 in a transient state, so the impact on the operation of the hydraulic motor 2 will be relatively low. After the harder rocks are crushed, the pressure transmitted from the crusher to the hydraulic motor 2 will decrease. At this time, the multiple rigid springs 305 will provide reverse thrust, controlling the reset sliding of the gathering frame 302, and then slidingly blocking the drainage port 307 again. The oil will then 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 a great pressure, that is, the crushed stone is in a state where the power of the hydraulic motor 2 cannot be crushed, or the hydraulic pipeline at this time cannot control the operation of the hydraulic motor 2 under the high pressure at this time, the gathering frame 302 will move to the left to the extreme position, thereby driving the roller 312 on the baffle 309 to slide to the left, slide to the ramp 310, and use the sliding of the inclined surface to drive the baffle 309 to slide up through the positioning shaft 311. At this time, the return hole 313 will move up to form a conductive state with the hose 52, and then the oil pressure inside the gathering frame 302 will be It will enter the inside of the protective tube 51 from the inside of the hose 52, and then flow back to the inside of the cooling tube 72, at this time forming a hydraulic circuit without pressure load. At this time, the circuit of the hydraulic motor 2 will not flow, and the hydraulic motor 2 will maintain the pressure stuck, waiting for the subsequent operator to remove the stone stuck in the crusher. Therefore, the entire hydraulic pipeline will form a protection circuit to provide pressure protection for the entire equipment, avoiding pipe bursts caused by excessive pipeline pressure and damage to various valves due to excessive pressure, thereby realizing automatic triggering protection under self-control of the hydraulic pipeline. The entire device is also equipped with high-temperature protection. When the hydraulic oil is running for a long time or under high load, the oil temperature accumulates and rises, and the cooling part 7 cannot achieve rapid cooling. At this time, the high-temperature hydraulic oil inside the accumulation frame 302 will radiate the temperature to the conduction plate 314, and then the conduction plate 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 pushed to rise slowly, and then the push 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 will flow from the protection circuit and not through the equipment, because the oil-driven equipment requires pressure. At this time, the protection circuit has no equipment load, so the oil will flow from the pressureless circuit. Therefore, the flow through the protection circuit and then through the position of the cooling part 7 is cooled, thereby realizing the circuit flow cooling under no-load, until the oil temperature circulation inside the aggregation rack 302 is reduced, and then the baffle 309 is controlled to move downward using the principle of cold shrinkage to realize automatic sealing of the protection circuit, and then the equipment is hydraulically driven again.

[0038] 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 pipe bursts, valve and pump pressure damage, and indirectly increasing the overall service life of the equipment.

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

Claims

1. A hydraulic control device for a multi-cylinder hydraulic cone crusher, characterized in that: include: Frame (1); Hydraulic motor (2); A cylinder body (6), wherein hydraulic oil is provided inside the cylinder body (6); Busbar (8); Control line (9); Protection circuit; A hydraulic protection module (3) is used to control the flow of hydraulic oil from a protection circuit after high pressure is generated during the operation of the hydraulic motor (2); The hydraulic protection module (3) comprises a thermal protection component and a pressure protection component; The thermal insulation component is used to protect the hydraulic oil after it reaches a certain high temperature; The pressure protection component is used to provide protection when the hydraulic motor (2) is in operation due to high pressure; A pump body is provided inside the cylinder body (6), and the pump body guides the hydraulic oil in the cylinder body (6) to the manifold (8) through the control pipeline (9). The hydraulic oil in the manifold (8) is transported to the hydraulic motor (2) through the hydraulic protection module (3) through the liquid inlet pipe (4). The hydraulic motor (2) is also provided with a liquid return pipe (5), and the liquid return pipe (5) returns the hydraulic oil to the inside of the cylinder body (6) through the cooling element (7); The pressure protection assembly 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 busbar (8), an oil outlet pipe (301) is installed on the fixing frame (308), a sleeve (303) is sleeved on the oil outlet pipe (301), a gathering frame (302) is fixedly connected to the sleeve (303), and the gathering frame (302) is slidably connected to the fixing frame (308). Inside, a rigid spring (305) is sleeved on the sleeve (303), one end of the rigid spring (305) is connected to the gathering frame (302), and the other end of the rigid spring (305) is connected to the fixed frame (308). A gathering cavity (304) is provided inside the gathering frame (302), one end of the liquid inlet pipe (4) is slidably connected to the inside of the sleeve (303), and the other end of the liquid inlet pipe (4) is connected to the hydraulic motor (2); A baffle (309) is slidably connected inside the gathering 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 ramp (310) is fixedly connected to the top of the fixing frame (308), and a reflux hole (313) is provided on the baffle (309); The heat preservation component includes a temperature and pressure box (316), which is installed on the gathering frame (302). A plurality of conduction plates (314) are provided inside the temperature and pressure box (316). One end of the conduction plate (314) passes through and extends to the inside of the gathering frame (302). A piston plate (317) is slidably connected to the inside of 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 ends (306) are provided at both ends of the positioning shaft (311). The hydraulic oil inside the gathering frame (302) radiates temperature to the conduction plate (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).

2. The hydraulic control device for a multi-cylinder hydraulic cone crusher according to claim 1, characterized in that: The liquid inlet pipe (4) includes a main pipe (41) and a secondary pipe (42). Two sleeves (303) are provided, and the main pipe (41) and the secondary pipe (42) are respectively sleeved inside the two sleeves (303). A drainage port (307) is opened on the secondary pipe (42) and located inside the sleeve (303).

3. The hydraulic control device for a multi-cylinder hydraulic cone crusher according to claim 2, characterized in that: The protection circuit includes a protection tube (51), one end of the protection tube (51) is connected to a hose (52), the other end of the protection tube (51) is connected to a cooling element (7), and one end of the hose (52) is connected to an aggregation rack (302).

4. The hydraulic control device for a multi-cylinder hydraulic cone crusher according to claim 1, characterized in that: The hydraulic motor (2), the protection circuit and the liquid inlet pipe (4) are each provided in two groups, the thermal insulation components are provided in two groups, and the two groups of thermal insulation components are symmetrically distributed with the center line of the cluster frame (302) as the symmetry axis.

5. The hydraulic control device for a multi-cylinder hydraulic cone crusher according to claim 1, characterized in that: The cooling element (7) includes a nitrogen tank (71) and a cooling pipe (72). A nitrogen mixture of a certain concentration is provided inside the nitrogen tank (71). An inner cavity and an intermediate cavity (75) are provided inside the cooling pipe (72). The nitrogen mixture inside the nitrogen tank (71) is injected into the interior of the intermediate cavity (75) through a pipeline. The return liquid pipe (5) is connected to the interior of the inner cavity. A guide pipe (73) is connected to the cooling pipe (72), and the guide pipe (73) is connected to the cylinder body (6).

6. The hydraulic control device for a multi-cylinder hydraulic cone crusher according to claim 5, characterized in that: The interior of the cooling pipe (72) is symmetrically provided with spiral sheets (74), and two liquid return pipes (5) are provided, and the two liquid return pipes (5) are respectively connected to the two sides of the cooling pipe (72).

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