An overload protection device for a multi-cylinder cone crusher

Abstract

The present invention relates to the field of cone crushers, and particularly to an overload protection device for a multi-cylinder cone crusher, which comprises an upper frame, a lower frame, an adjusting ring, an upper crushing wall, a main shaft, an eccentric wheel, a driving wheel, a lower crushing wall, a protection assembly, a cleaning assembly, and a commutation assembly; the upper frame is installed at the upper end of the lower frame, the adjusting ring is connected to the inner side of the upper frame, the upper crushing wall is installed inside the adjusting ring, the main shaft is installed at the axis position of the lower frame, the eccentric wheel is installed outside the main shaft, a driving groove is formed at the lower end of the lower frame, the driving wheel is installed in the driving groove and meshes with the eccentric wheel, the lower crushing wall is installed outside the eccentric wheel, the protection assembly is installed outside the lower frame, the cleaning assembly is installed at the upper end of the lower crushing wall, the commutation assembly is installed at the lower end of the lower frame, the protection assembly pushes the upper frame to move upward and drives the cleaning assembly to unfold along the surface of the lower crushing wall, and the unfolding of the cleaning assembly drives the commutation assembly to move downward to change the material falling direction.

Description

Technical Field

[0001] The present invention relates to the field of cone crushers, and particularly to an overload protection device for a multi-cylinder cone crusher. Background Art

[0002] When a multi-cylinder cone crusher is working, materials enter from the top feed inlet, and the maximum particle size needs to be less than 85% of the width of the feed inlet. The moving cone is driven by an eccentric sleeve to perform periodic swinging, forming a dynamic crushing cavity with the fixed conical head. When the moving cone approaches the conical head, the materials are crushed by extrusion. When it moves away, the crushed materials fall due to gravity and are discharged. The materials form multiple layers of accumulation in the crushing cavity, and efficient crushing is achieved through the mutual extrusion and rubbing between multiple particles.

[0003] When non-crushable objects such as metals and woods enter the crushing cavity, or when the feed rate is too large or the discharge opening is too small, resulting in the current or oil pressure exceeding the set threshold, it is easy to cause the crusher to be overloaded and damage the crusher. At this time, by setting an overload protection device, that is, multiple hydraulic cylinders are arranged around the equipment protective sleeve. During normal operation, the hydraulic cylinders are tightened and provide the crushing force. When the crusher is overloaded, the hydraulic oil flows reversely, and the adjusting ring moves upward under the hydraulic action, the size of the discharge opening expands, accelerating the discharge of materials. The expanded discharge opening allows foreign objects (such as iron blocks) to be discharged from the crushing cavity along with the material flow. After the foreign objects are discharged, the hydraulic system is re-pressurized, and the adjusting ring resets to the initial position to resume normal operation.

[0004] However, when the moisture content of the ore is too high (such as exceeding 8%) or it contains components such as clay, fine particles are prone to agglomerate and adhere to the wall of the crushing cavity or the surface of the moving / conical head. At this time, if non-crushable objects such as metals and woods enter the crushing cavity and are squeezed by the moving cone and the conical head, they will adhere to the surface of the crushing cavity wall. By means of the reverse flow of hydraulic oil and the upward movement of the adjusting ring under the hydraulic action to expand the size of the discharge opening, non-crushable objects such as metals and woods cannot be discharged.

[0005] In the prior art, this situation is avoided by drying the ore in advance. However, drying the ore in advance not only has a high cost, but also in rainy areas, due to the humid air, during the transportation of the ore to the crusher and in the crushing cavity of the crusher, because the ore contains clay components, after a large amount of ore is crushed, there will still be a problem that fine particles agglomerate and adhere to the inner wall of the crushing cavity.

[0006] In view of the above situation, in order to overcome the above technical problems, the present invention designs an overload protection device for a multi-cylinder cone crusher, which solves the above technical problems. Summary of the Invention

[0007] The purpose of the present invention is to provide an overload protection device for a multi-cylinder cone crusher, which is used to solve the problem that in rainy areas, due to humid air, fine particles will agglomerate and adhere to the inner wall of the crushing cavity. At this time, if non-crushable objects such as metals and woods enter the crushing cavity, they will adhere to the surface of the crushing cavity wall, resulting in the overload protection device being unable to remove foreign objects in the crushing cavity. The present invention is provided with a cleaning component. When the crusher is working normally, the cleaning component rotates with the lower crushing wall to evenly separate the stones, making the material falling in the crushing cavity uniform and avoiding overload. When an overload occurs, the cleaning component and the protection component cooperate. While the protection component lifts the upper frame to increase the crushing cavity, the cleaning component unfolds to push foreign objects to prevent them from adhering to the crushing cavity.

[0008] An overload protection device for a multi-cylinder cone crusher, comprising an upper frame, a lower frame, an adjusting ring, an upper crushing wall, a main shaft, an eccentric wheel, a transmission wheel, a lower crushing wall, a protection component, a cleaning component, and a commutation component; the upper frame is installed at the upper end of the lower frame, the adjusting ring is connected to the inner side of the upper frame, the upper crushing wall is installed inside the adjusting ring, the main shaft is installed at the axis position of the lower frame, the eccentric wheel is installed outside the main shaft, a transmission groove is opened at the lower end of the lower frame, the transmission wheel is installed in the transmission groove and meshes with the eccentric wheel, the lower crushing wall is installed outside the eccentric wheel, the protection component is installed outside the lower frame, the cleaning component is installed at the upper end of the lower crushing wall, and the commutation component is installed at the lower end of the lower frame. The protection component pushes the upper frame to move upward and drives the cleaning component to unfold along the surface of the lower crushing wall. The unfolding of the cleaning component drives the commutation component to move downward to change the material falling direction.

[0009] In the above solution, by combining the protection component and the cleaning component, when non-crushable objects such as metals and woods adhere to the inner wall of the crushing cavity, while the protection component drives the upper frame and the upper crushing wall to rise, it drives the cleaning component to unfold along the surface of the lower crushing wall to clean the foreign objects adhering to the surface of the lower crushing wall, preventing the foreign objects from continuing to adhere to the crushing cavity and affecting the normal operation of the crusher after the protection component falls back.

[0010] Preferably, the protection component includes a hydraulic rod, an oil tank, an oil delivery pipe, and a hydraulic pump. The lower end of the hydraulic rod is fixedly installed outside the lower frame and the upper end is connected to the upper frame. The oil tank is installed at the lower end of the hydraulic rod. The hydraulic pump is installed on one side of the hydraulic rod and is communicated with the oil tank. An oil storage cavity is opened inside the main shaft, and the oil delivery pipe communicates the oil tank and the oil storage cavity.

[0011] In the above solution, the hydraulic pump drives the hydraulic rod to lift the upper frame upward, increasing the space of the crushing chamber to prevent foreign objects from getting stuck. At the same time, the hydraulic pump extracts the hydraulic oil in the oil storage chamber through the oil pipeline and drives the cleaning component downward. Without the need to separately set up a driving component, it is ensured that when an overload occurs, the two movements are carried out simultaneously. While the hydraulic pump drives the hydraulic rod to lift the upper frame upward and increase the space of the crushing chamber, the cleaning component removes the foreign objects on the surface of the lower crushing wall.

[0012] Preferably, the cleaning component includes an upper cone, cleaning blades, a transmission rod, and a sealing ring. A chute is formed on the surface of the lower crushing wall, and the lower ends of multiple cleaning blades are slidably connected in the chute. The upper cone is movably connected to the upper ends of multiple cleaning blades. The transmission rod is fixedly installed at the lower end of the upper cone. The sealing ring is movably installed in the oil storage chamber, and the lower end of the transmission rod is spherical and movably installed at the upper end of the sealing ring.

[0013] In the above solution, when the crusher is overloaded, the hydraulic oil in the oil storage chamber is sucked into the fuel tank, driving the sealing ring to descend. At this time, the upper cone and the transmission rod descend with the sealing ring. Since one end of the cleaning blade is fixed in the upper cone and the other end is fixed in the chute, the end of the cleaning blade fixed in the upper cone descends with the upper cone, while the other end moves along with the chute. During the movement of the cleaning blade, it will push the foreign objects adhering to the lower crushing wall to prevent them from continuing to adhere to the lower crushing wall.

[0014] Preferably, the multiple cleaning blades are distributed in a circular array on the outside of the upper cone, and when the multiple cleaning blades are closed, they jointly form a conical shape.

[0015] In the above solution, when the crusher is working normally, the multiple cleaning blades jointly form a cone, and the upper end of the cone continuously makes a circular motion along with the lower crushing wall, evenly guiding the stones falling from the upper end into the crushing chamber to avoid overloading the crusher due to excessive stones on one side of the crushing chamber.

[0016] Preferably, the cross-section of the chute is semi-circular, and rounded corners are provided at the intersections of both sides with the lower crushing wall. A sliding ball is installed at the lower end of the cleaning blade, and the sliding ball is matched with the chute.

[0017] In the above solution, the chute is set to be semi-circular, and rounded corners are provided on both sides of the lower crushing wall. Due to the stress dispersion of the semi-circular structure, local stress concentration is reduced, and the possibility of small crushed stones getting stuck in the chute is reduced.

[0018] Force dispersion reduces local stress concentration and reduces the possibility of small crushed stones getting stuck in the chute.

[0019] Preferably, a de-sludging disk is rotatably connected to the surface of the lower crushing wall, and there are triangular protrusions on the outside of the de-sludging disk, and the protrusions are located between two cleaning blades.

[0020] In the above solution, a mud removal tray is arranged on the surface of the lower crushing wall. The mud removal tray rotates together with the upper cone, and the triangular protrusion is always stuck in the gap between the two cleaning blades. When the cleaning blades are retracted, the sludge on both sides of the blades is scraped off by the triangular protrusion, preventing the sludge on both sides of the cleaning blades from affecting the closing of the cleaning blades.

[0021] Preferably, the commutation assembly includes a blanking chute, a blanking pipe, a connecting rod, and a commutation pipe. The blanking chute is fixedly installed at the lower end of the lower frame, the blanking pipe is fixedly connected to the lower end of the blanking chute, the connecting rod is fixedly connected to the lower end of the sealing ring and penetrates through the oil storage cavity, and the commutation pipe is fixedly connected to the lower end of the connecting rod.

[0022] In the above solution, when an overload phenomenon occurs, the protection assembly supports the upper crushing wall. At this time, the stones entering the crushing cavity will fall into the blanking chute without being crushed, affecting the crushing quality. In this solution, by setting the commutation assembly, when an overload phenomenon occurs, the sealing ring descends, driving the commutation pipe to move downward through the connecting rod. At this time, the blanking direction changes, and the uncrushed stones are screened out and crushed again.

[0023] Preferably, a threaded groove is provided on the inner wall of the oil storage cavity, and a thread line is provided on the surface of the sealing ring to cooperate with the threaded groove.

[0024] In the above solution, through the mutual cooperation of the sealing ring and the oil storage cavity, a certain support is given to the sealing ring, enhancing its stability. At the same time, when the sealing ring rises and falls, it can drive the upper cone and the cleaning blades at the upper end to rotate, enabling the cleaning blades to clean the entire surface of the upper crushing wall.

[0025] Preferably, the lower end of the commutation pipe is a slope, and a discharge port is provided at the lower end. Two mating ports with opposite directions are provided on the outer side of the blanking pipe, and the mating ports cooperate with the discharge port.

[0026] In the above solution, the lower end of the commutation pipe is set as a slope to prevent the stones from falling directly and increasing the force on the connecting rod. At the same time, it can guide the stones into the discharge port. By providing two mating ports with opposite directions on the outer side of the blanking pipe, the crushed and unbroken stones can be respectively corresponded to and distinguished.

[0027] The beneficial effects of the present invention are as follows:

[0028] 1. An overload protection device for a multi-cylinder cone crusher. The existing overload protection devices for multi-cylinder cone crushers cannot solve the problem that due to humid air, when non-crushable objects such as metals and woods enter the crushing chamber, they will adhere to the surface of the crushing chamber wall, resulting in the inability of the overload protection device to remove foreign objects in the crushing chamber. The present invention sets up a cleaning component and a protection component. The protection component drives the cleaning component to unfold along the surface of the lower crushing wall to clean the foreign objects adhering to the surface of the lower crushing wall, preventing the foreign objects from continuing to adhere in the crushing chamber after the protection component falls back, affecting the normal operation of the crusher and causing the crusher to be frequently overloaded. At the same time, the cleaning component will also drive the commutation component to operate during cleaning.

[0029] 2. An overload protection device for a multi-cylinder cone crusher. The present invention sets up a cleaning component. In addition to being able to unfold along the surface of the lower crushing wall to clean the foreign objects adhering to the surface of the lower crushing wall when an overload phenomenon occurs, the cleaning blades in the cleaning component can also form a cone together when the crusher is operating normally. The upper end of the cone can continuously make a circular motion along with the lower crushing wall, evenly guiding the stones falling from the upper end into the crushing chamber to avoid overloading of the crusher due to excessive stones on one side of the crushing chamber.

[0030] 3. An overload protection device for a multi-cylinder cone crusher. In the prior art, when the crusher has an overload phenomenon, the upper frame is lifted to increase the crushing chamber to prevent overload. However, in this process, the uncrushed stones will fall into the blanking chute, affecting the crushing effect. The present invention sets up a commutation component at the lower end of the lower frame. While the cleaning component descends, it drives the commutation pipe to descend and rotate, changing the direction of the material falling when an overload phenomenon occurs, screening out the uncrushed stones and re-crushing them to improve the crushing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Now the above and other aspects of the present invention will be described by way of example only with reference to the drawings, where:

[0033] Figure 1 is the axonometric schematic diagram of the present invention;

[0034] Figure 2 is the front view of the present invention;

[0035] Figure 3 is the sectional view of the present invention;

[0036] Figure 4 It is a schematic diagram of the internal components of the present invention;

[0037] Figure 5 is Figure 4 an enlarged view of part B in

[0038] Figure 6 a sectional view of the internal components of the present invention;

[0039] Figure 7 is Figure 6 an enlarged view of part A in

[0040] Figure 8 a schematic diagram of the commutation component of the present invention.

[0041] In the figure: 1, upper frame; 2, lower frame; 21, transmission groove; 3, adjusting ring; 4, upper crushing wall; 5, main shaft; 51, oil storage cavity; 511, thread groove; 512, thread line; 6, eccentric wheel; 7, transmission wheel; 8, lower crushing wall; 81, sliding groove; 82, mud removing tray; 83, protrusion; 9, protection component; 91, hydraulic rod; 92, fuel tank; 93, oil delivery pipe; 94, hydraulic pump; 10, cleaning component; 101, upper cone; 102, cleaning blade; 103, transmission rod; 104, sealing ring; 11, commutation component; 111, blanking groove; 112, blanking pipe; 1121, mating port; 1141, discharge port; 113, connecting rod; 114, commutation pipe. Specific embodiments

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention, and in conjunction with the working state, making its structural features more detailed. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] Please refer to Figures 1 to 8, a kind of overload protection device for a multi-cylinder cone crusher according to the present invention, the technical solution is as follows: It includes an upper frame 1, a lower frame 2, an adjusting ring 3, an upper crushing wall 4, a main shaft 5, an eccentric wheel 6, a driving wheel 7, a lower crushing wall 8, a protection component 9, a cleaning component 10, and a reversing component 11; the upper frame 1 is installed at the upper end of the lower frame 2, the adjusting ring 3 is connected to the inner side of the upper frame 1, the upper crushing wall 4 is installed inside the adjusting ring 3, the main shaft 5 is installed at the axis position of the lower frame 2, the eccentric wheel 6 is installed outside the main shaft 5, a driving groove 21 is opened at the lower end of the lower frame 2, the driving wheel 7 is installed in the driving groove 21 and meshes with the eccentric wheel 6, the lower crushing wall 8 is installed outside the eccentric wheel 6, the protection component 9 is installed outside the lower frame 2, the cleaning component 10 is installed at the upper end of the lower crushing wall 8, the reversing component 11 is installed at the lower end of the lower frame 2, the upper end of the cleaning component 10 rotates with the lower crushing wall 8 to evenly separate the stones, when the crusher is overloaded, the protection component 9 pushes the upper frame 1 to move upward and drives the cleaning component 10 to unfold along the surface of the lower crushing wall 8, the unfolding of the cleaning component 10 drives the reversing component 11 to move downward to change the material falling direction. By combining the protection component 9 and the cleaning component 10, when non-crushable objects such as metal and wood adhere to the inner wall of the crushing cavity, while the protection component 9 drives the upper frame 1 and the upper crushing wall 4 to rise, it drives the cleaning component 10 to unfold along the surface of the lower crushing wall 8 to clean the foreign objects adhering to the surface of the lower crushing wall 8, preventing the foreign objects from continuing to adhere in the crushing cavity after the protection component 9 falls back and affecting the normal operation of the crusher.

[0044] As an implementation manner of the present invention, referring to Figure 3 , the protection component 9 includes a hydraulic rod 91, an oil tank 92, an oil pipeline 93, and a hydraulic pump 94. The hydraulic rod 91 is fixedly installed outside the lower frame 2 and is connected to the upper frame 1 at the upper end. The oil tank 92 is installed at the lower end of the hydraulic rod 91. The hydraulic pump 94 is installed on one side of the hydraulic rod 91 and is communicated with the oil tank 92. An oil storage cavity 51 is opened inside the main shaft 5. The oil pipeline 93 communicates the oil tank 92 and the oil storage cavity 51. The hydraulic pump 94 drives the hydraulic rod 91 to lift the upper frame 1 upward to increase the space of the crushing cavity and prevent foreign objects from getting stuck. At the same time, the hydraulic pump 94 extracts the hydraulic oil in the oil storage cavity 51 through the oil pipeline 93 and drives the cleaning component 10 downward. Without the need to separately set a driving component, it ensures that when an overload phenomenon occurs, the two movements are carried out simultaneously. While the hydraulic pump 94 drives the hydraulic rod 91 to lift the upper frame 1 upward to increase the space of the crushing cavity, the cleaning component 10 removes the foreign objects on the surface of the lower crushing wall 8.

[0045] As an implementation manner of the present invention, referring to Figures 3 to 5, the cleaning component 10 includes an upper cone 101, cleaning blades 102, a transmission rod 103, and a sealing ring 104. A chute 81 is formed on the surface of the lower crushing wall 8. The lower ends of the plurality of cleaning blades 102 are slidably connected in the chute 81. The upper cone 101 is movably connected to the upper ends of the plurality of cleaning blades 102. The upper end of the transmission rod 103 is fixedly installed at the lower end of the upper cone 101. The sealing ring 104 is movably installed in the oil storage cavity 51. The lower end of the transmission rod 103 is spherical and is movably installed at the upper end of the sealing ring 104. When the crusher is overloaded, the hydraulic oil in the oil storage cavity 51 is sucked into the fuel tank 92, driving the sealing ring 104 to descend. At this time, the upper cone 101 and the transmission rod 103 descend with the sealing ring 104. Since one end of the cleaning blade 102 is fixed in the upper cone 101 and the other end is fixed in the chute 81, the end of the cleaning blade 102 fixed to the upper cone 101 descends with the upper cone 101, while the other end moves along with the chute 81. During the movement of the cleaning blade 102, the foreign matter adhered to the lower crushing wall 8 is pushed to prevent it from continuing to adhere to the lower crushing wall 8.

[0046] As an embodiment of the present invention, refer to Figures 4 to 6 , the plurality of cleaning blades 102 are arranged in a circumferential array on the outside of the upper cone 101, and when the plurality of cleaning blades 102 are closed, they jointly form a conical shape. When the crusher is working normally, the plurality of cleaning blades 102 jointly form a cone, and the upper end of the cone continuously makes a circular motion with the lower crushing wall 8, evenly guiding the stones falling from the upper end into the crushing cavity, avoiding overloading of the crusher due to excessive stones on one side of the crushing cavity.

[0047] As an embodiment of the present invention, refer to Figure 5 , the cross-section of the chute 81 is hemispherical, and rounded corners are provided at the intersections of both sides with the lower crushing wall 8. A sliding ball 1021 is installed at the lower end of the cleaning blade 102, and the sliding ball 1021 cooperates with the chute 81. By setting the chute 81 to be semi-circular and opening rounded corners on both sides of the lower crushing wall 8, it is avoided that the crushed fine stones are stuck in the chute 81.

[0048] As an embodiment of the present invention, refer to Figure 6 , a mud-removing disc 82 is rotatably connected to the surface of the lower crushing wall 8. There is a triangular protrusion 83 on the outside of the mud-removing disc 82. The protrusion 83 is located between two cleaning blades 102. By arranging the mud-removing disc 82 on the surface of the lower crushing wall 8, the mud-removing disc 82 rotates together with the upper cone 101, and the protrusion 83 is always stuck in the gap between the two cleaning blades 102. When the cleaning blades 102 are retracted, the sludge on both sides of the blades is scraped off by the protrusion 83, avoiding the sludge on both sides of the cleaning blades 102 from affecting the closing of the cleaning blades 102.

[0049] As an embodiment of the present invention, refer to Figure 3 andFigure 8 The commutation component 11 includes a blanking chute 111, a blanking pipe 112, a connecting rod 113, and a commutation pipe 114. The blanking chute 111 is fixedly installed at the lower end of the lower frame 2. The blanking pipe 112 is fixedly connected to the lower end of the blanking chute 111. The connecting rod 113 is fixedly connected to the lower end of the sealing ring 104 and penetrates through the oil storage chamber 51. The commutation pipe 114 is fixedly connected to the lower end of the connecting rod 113. When an overload occurs, the protection component 9 supports the upper crushing wall 4. At this time, the stones entering the crushing chamber will fall into the blanking chute 111 without being crushed, affecting the crushing quality. In this solution, by setting the commutation component 11, when an overload occurs, the sealing ring 104 descends, driving the commutation pipe 114 to move downward through the connecting rod 113. At this time, the blanking direction changes, and the uncrushed stones are screened out and crushed again.

[0050] As an implementation manner of the present invention, referring to Figure 6 、 Figure 7 , a thread groove 511 is provided on the inner wall of the oil storage chamber 51, and a thread 512 is provided on the surface of the sealing ring 104 to cooperate with the thread groove 511. Through the cooperation of the sealing ring 104 and the oil storage chamber 51, a certain support is given to the sealing ring 104 to enhance its stability. At the same time, when the sealing ring 104 rises and falls, it can drive the upper cone 101 and the cleaning blade 102 at the upper end to rotate, so that the cleaning blade 102 can clean the entire surface of the upper crushing wall 4.

[0051] As an implementation manner of the present invention, referring to Figure 8 , the lower end of the commutation pipe 114 is a slope, and a discharge port 1141 is provided at the lower end. Two mating ports 1121 with opposite directions are provided on the outer side of the blanking pipe 112, and the mating ports 1121 cooperate with the discharge port 1141. The lower end of the commutation pipe 114 is set as a slope to prevent the force on the connecting rod 113 from increasing due to the direct fall of the stones, and at the same time, it can guide the stones into the discharge port 1141. By providing two mating ports 1121 with opposite directions on the outer side of the blanking pipe 112, the crushed and unbroken stones can be respectively corresponded to and distinguished.

[0052] Working principle:

[0053] When non-crushable objects such as metals and woods adhere to the inner wall of the crushing chamber, the protection component 9 drives the upper frame 1 and the upper crushing wall 4 to rise, increasing the space of the crushing chamber. At the same time, it drives the cleaning component 10 to unfold along the surface of the lower crushing wall 8 to clean the foreign objects adhering to the surface of the lower crushing wall 8, preventing the foreign objects from continuing to adhere to the crushing chamber after the protection component 9 falls back, affecting the normal operation of the crusher and causing the crusher to be frequently overloaded. At the same time, the commutation component 11 is used to change the blanking direction of the stones during overload protection, improving the crushing quality.

[0054] The specific implementation manner is as follows:

[0055] Anti-overload process: When an overload phenomenon occurs, the hydraulic pump 94 drives the hydraulic rod 91 to lift the upper frame 1 upward, increasing the space of the crushing chamber to prevent foreign objects from getting stuck. At the same time, the hydraulic pump 94 extracts the hydraulic oil in the oil storage chamber 51 through the oil delivery pipe 93, driving the sealing ring 104 to descend. At this time, the upper cone 101 and the transmission rod 103 descend with the sealing ring 104. Since one end of the cleaning blade 102 is fixed inside the upper cone 101 and the other end is fixed inside the sliding groove 81, the end of the cleaning blade 102 fixed to the upper cone 101 descends with the upper cone 101, while the other end moves along with the sliding groove 81. During the movement of the cleaning blade 102, it will push the foreign objects adhering to the lower crushing wall 8 to prevent them from continuing to adhere to the lower crushing wall 8.

[0056] Feeding and commutation process: When no overload phenomenon occurs, the discharge port 1141 communicates with the upper mating port 1121. At this time, the stone material falls from the feeding chute 111 into the commutation pipe 114 and exits through the upper mating port 1121. The descending sealing ring 104 drives the connecting rod 113 to move downward. Since the inner wall of the oil storage chamber 51 is provided with a thread groove 511 and the outer side of the sealing ring 104 is provided with a thread line 512, when the sealing ring 104 descends, it will drive the connecting rod 113 to rotate. At this time, the discharge port 1141 communicates with the lower mating port 1121, and the stone material exits through the lower mating port 1121.

[0057] When no overload phenomenon occurs normally, multiple cleaning blades 102 together form a cone, and the upper end of the cone continuously makes a circular motion along with the lower crushing wall 8, evenly guiding the stone material falling from the upper end into the crushing chamber to avoid overloading the crusher due to excessive stone material on one side of the crushing chamber.

[0058] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An overload protection device for a multi-cylinder cone crusher, comprising an upper frame (1), a lower frame (2), an adjusting ring (3), and an upper crushing wall (4), characterized in that: It further includes a main shaft (5), an eccentric wheel (6), a transmission wheel (7), a lower crushing wall (8), a protection component (9), a cleaning component (10), and a commutation component (11); the main shaft (5) is installed at the axis position of the lower frame (2), the eccentric wheel (6) is installed outside the main shaft (5), a transmission groove (21) is opened at the lower end of the lower frame (2), the transmission wheel (7) is installed in the transmission groove (21) and meshes with the eccentric wheel (6), the lower crushing wall (8) is installed outside the eccentric wheel (6), the protection component (9) is installed outside the lower frame (2), and the cleaning component (10) is installed at the upper end of the lower crushing wall (8); The protection component (9) includes a hydraulic rod (91), an oil tank (92), an oil delivery pipe (93), and a hydraulic pump (94). The oil tank (92) is installed outside the lower frame (2), the hydraulic rod (91) is fixedly installed on the upper side of the oil tank (92), and the upper end is connected to the upper frame (1). The hydraulic pump (94) is installed on one side of the hydraulic rod (91) and communicates with the oil tank (92). An oil storage cavity (51) is opened inside the main shaft (5), and the oil delivery pipe (93) communicates the oil tank (92) and the oil storage cavity (51); The cleaning component (10) includes an upper cone (101), cleaning blades (102), a transmission rod (103), and a sealing ring (104). A sliding groove (81) is opened on the surface of the lower crushing wall (8), and the lower ends of multiple cleaning blades (102) are slidably connected in the sliding groove (81). The upper cone (101) is movably connected to the upper ends of multiple cleaning blades (102). The transmission rod (103) is fixedly installed at the lower end of the upper cone (101). The sealing ring (104) is movably installed in the oil storage cavity (51), and the lower end of the transmission rod (103) is spherical and movably installed on the upper end of the sealing ring (104); The commutation component (11) is installed at the lower end of the lower frame (2). The upper end of the cleaning component (10) evenly separates stones as the lower crushing wall (8) rotates. When the crusher is overloaded, the protection component (9) pushes the upper frame (1) upward and drives the cleaning component (10) downward. When the cleaning component (10) moves downward, the upper end unfolds along the surface of the lower crushing wall (8), and at the same time drives the commutation component (11) downward to change the material falling direction.

2. The overload protection device for a multi-cylinder cone crusher according to claim 1, wherein: The multiple cleaning blades (102) are distributed in a circumferential array outside the upper cone (101), and when the multiple cleaning blades (102) are closed, they jointly form a conical shape.

3. The overload protection device for a multi-cylinder cone crusher according to claim 1, wherein: The cross-section of the sliding groove (81) is hemispherical, and rounded corners are opened on both sides of the sliding groove (81). A sliding ball (1021) is installed at the lower end of the cleaning blade (102), and the sliding ball (1021) cooperates with the sliding groove (81).

4. The overload protection device for a multi-cylinder cone crusher according to claim 1, characterized in that: A mud removing disc (82) is rotatably connected to the surface of the lower crushing wall (8), and a triangular protrusion (83) is provided outside the mud removing disc (82), and the protrusion (83) is located between two cleaning blades (102).

5. The overload protection device for a multi-cylinder cone crusher according to claim 1, characterized in that: The commutation assembly (11) includes a blanking chute (111), a blanking pipe (112), a connecting rod (113), and a commutation pipe (114). The blanking chute (111) is fixedly installed at the lower end of the lower frame (2). The blanking pipe (112) is fixedly connected to the lower end of the blanking chute (111). The connecting rod (113) is fixedly connected to the lower end of the sealing ring (104) and penetrates through the oil storage cavity (51). The commutation pipe (114) is fixedly connected to the lower end of the connecting rod (113).

6. The overload protection device for a multi-cylinder cone crusher according to claim 1, characterized in that: Thread grooves (511) are formed in the inner wall of the oil storage cavity (51), and thread lines (512) are formed on the surface of the sealing ring (104) and are matched with the thread grooves (511).

7. The overload protection device for a multi-cylinder cone crusher according to claim 5, characterized in that: The lower end of the commutation pipe (114) is an inclined surface, and a discharge port (1141) is formed at the lower end. Two mating ports (1121) with opposite directions are formed on the outer side of the blanking pipe (112), and the mating ports (1121) are matched with the discharge port (1141).

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