Cone crusher with eccentricity stepless adjustment

Abstract

The application provides a conical crusher with stepless eccentricity adjustment, which comprises a lower frame, a fixed cone, a movable cone and an eccentric sleeve. The fixed cone is arranged above the lower frame, and the fixed cone has a fixed cavity, the inner wall of the fixed cavity forms a first conical surface, the top of the fixed cavity has an inlet and the bottom of the fixed cavity has an outlet. The outer wall of the movable cone forms a second conical surface, and the second conical surface has an eccentric rotation center line. The movable cone is movably arranged at the outlet, and the first conical surface is arranged at intervals with the second conical surface. The movable cone has a vertical cavity with an opening downward. The eccentric sleeve is rotatably arranged in the vertical cavity around a main machine rotation center line, and the eccentric sleeve can also move up and down. The eccentric rotation center line and the main machine rotation center line have an included angle, and the outer side wall of the eccentric sleeve is in contact and abutment with the inner wall of the vertical cavity. The device can realize stepless adjustment of the eccentricity during the operation of the conical crusher, and the eccentricity can be quickly adjusted without disassembling the machine, so that the adaptability of the conical crusher is improved.

Description

Technical Field

[0001] This invention relates to the field of crushers, and in particular to a cone crusher with stepless adjustment of eccentricity. Background Technology

[0002] Cone crushers are widely used in various stages of crushing, including coarse, medium, and fine crushing, in mining and sand and gravel production lines. Eccentricity is a crucial control parameter for cone crushers, playing a vital role in their operating power, stability, and production capacity. Before leaving the factory, a suitable eccentricity needs to be selected based on the type and gradation of the material being crushed. However, in many cases, the gradation of the material is not constant and changes over time. When the gradation of the material changes significantly, the eccentricity of the cone crusher needs to be adjusted. Currently, the eccentricity of cone crushers from various manufacturers on the market is fixed at the time of manufacture and cannot be adjusted arbitrarily. Although various manufacturers claim that their cone crushers have adjustable eccentricity, the adjustment method is quite complex. The process involves disassembling the machine and changing the installation direction of the eccentric sleeve liner to alter the eccentricity. This entire operation is time-consuming and labor-intensive, and the eccentricity adjustment is limited to 3-4 fixed values, which cannot be adjusted in real-time according to changes in the material. Summary of the Invention

[0003] In view of the above problems, the present invention is proposed to provide a cone crusher with stepless eccentricity adjustment that overcomes or at least partially solves the above problems. It can solve the problem that the eccentricity of the current cone crusher cannot be adjusted in real time. The cone crusher can achieve stepless eccentricity adjustment during operation without disassembling the machine and can quickly adjust the eccentricity.

[0004] Specifically, the present invention provides a cone crusher with stepless adjustment of eccentricity, comprising:

[0005] The lower frame is vertically arranged;

[0006] A fixed cone is fixedly disposed above the lower frame. The fixed cone has a fixed cavity, the inner wall of which forms a first conical surface. The top of the fixed cavity has an inlet and the bottom of the fixed cavity has an outlet, the inlet being smaller than the outlet.

[0007] A moving cone, the outer wall of which forms a second conical surface, the second conical surface having an eccentric rotation center line; the moving cone is movably disposed at the outlet, and the first conical surface and the second conical surface are spaced apart to form a crushing chamber between the first conical surface and the second conical surface; the moving cone has a vertical cavity opening downwards;

[0008] An eccentric sleeve is rotatably mounted on the lower frame about the rotation center line of the main unit and is inserted into the vertical cavity at least at the top. The eccentric sleeve can also move up and down. There is an angle between the eccentric rotation center line and the rotation center line of the main unit. The outer wall of the eccentric sleeve is in contact with the peripheral wall of the vertical cavity.

[0009] Optionally, the cone crusher also includes a first drive unit for driving the eccentric sleeve to move up and down.

[0010] Optionally, the first driving device includes:

[0011] A hydraulic cylinder is mounted on the lower frame, and the hydraulic cylinder includes a vertically arranged cylinder rod.

[0012] A thrust bearing is provided, which is connected to the cylinder rod of the hydraulic cylinder; the upper surface of the thrust bearing abuts against the lower surface of the eccentric sleeve.

[0013] Optionally, the cone crusher also includes a height detection device for detecting the height of the eccentric sleeve.

[0014] Optionally, the height detection device includes:

[0015] A magnet, which is mounted on the thrust bearing or the eccentric sleeve;

[0016] A height sensor, mounted on the lower frame, is used to detect the height of the magnet.

[0017] Optionally, the thrust bearing has a first mounting cavity that opens downwards;

[0018] The height detection device also includes:

[0019] A magnet fixing nut has a second mounting cavity with an upward opening, and the magnet is disposed in the second mounting cavity, which is located within the first mounting cavity.

[0020] Optionally, the cone crusher also includes:

[0021] The second drive unit is mounted on the lower frame;

[0022] The transmission device, wherein the second drive device drives the eccentric sleeve to rotate via the transmission device;

[0023] The second driving device is a motor;

[0024] The transmission device includes a first bevel gear and a second bevel gear that mesh with each other.

[0025] The first bevel gear is mounted on the lower frame and connected to the eccentric sleeve. The first bevel gear is configured to drive the eccentric sleeve to rotate. The second bevel gear is connected to the output shaft of the motor.

[0026] Optionally, the cone crusher further includes a fixing device, which includes a gear support ring and a pressure block. The gear support ring is connected to the first bevel gear, and the pressure block is used to connect the gear support ring to the lower frame.

[0027] Optionally, the lower frame includes vertically arranged mounting holes;

[0028] The cone crusher also includes a main shaft, the axis of which is the rotation center line of the main machine. The lower end of the main shaft is inserted into the mounting hole, and the upper end of the main shaft passes through the inner hole of the eccentric sleeve and is inserted into the vertical cavity.

[0029] Optionally, the cone crusher further includes a concave spherical bearing and a ball bearing that cooperate with each other; the concave spherical bearing and the ball bearing are located between the upper surface of the main shaft and the top wall of the vertical cavity.

[0030] Optionally, the cone crusher further includes an electrical control system, the electrical control system comprising:

[0031] Input unit, the input unit is used to input the material gradation information to be crushed;

[0032] A hydraulic unit is used to drive the cylinder rod to extend;

[0033] A detection unit is used to obtain the extension length of the cylinder rod and transmit the extension length information of the cylinder rod.

[0034] An electronic control unit (ECU) receives information from the input unit and information from the detection unit, and controls the operating state of the hydraulic unit based on the information from the input unit and / or the information from the detection unit.

[0035] In this invention, an eccentrically adjustable cone crusher operates with an eccentric sleeve rotating around the main crusher's rotation centerline. The outer wall of the eccentric sleeve contacts the inner wall of the vertical cavity, causing the moving cone to oscillate around the eccentric rotation centerline, thereby changing the distance between the first and second cone surfaces. When large pieces of raw materials such as sand and gravel enter the crushing chamber through the inlet of the fixed cone, they are crushed by the passive cone compression within the crushing chamber. When eccentricity adjustment is needed, the eccentric sleeve moves upward, penetrating deeper into the vertical cavity. This increases the eccentricity, increasing the crushing ratio of the cone crusher and further pulverizing large pieces of sand and gravel into smaller particles. This design allows for stepless eccentricity adjustment during cone crusher operation without machine disassembly, ensuring safety and speed. The eccentricity can be quickly adjusted according to changes in on-site materials, thus improving the working efficiency and adaptability of the cone crusher.

[0036] The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0037] The following sections will describe some specific embodiments of the invention in detail by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0038] Figure 1 This is a structural diagram of a cone crusher according to an embodiment of the present invention;

[0039] Figure 2 This is a structural diagram of a cone crusher after the eccentric sleeve has moved upward according to an embodiment of the present invention;

[0040] Figure 3 This is a comparison diagram of the eccentricity of a cone crusher before and after the eccentric sleeve moves upward, according to an embodiment of the present invention.

[0041] Figure 4 yes Figure 1 Sectional view of AA;

[0042] Figure 5 yes Figure 1 Enlarged view of B in the middle;

[0043] Figure 6 This is a structural diagram of a cone crusher according to an embodiment of the present invention;

[0044] Figure 7 This is a schematic diagram of the electrical control system of a cone crusher according to an embodiment of the present invention. Detailed Implementation

[0045] The following reference Figures 1 to 7 This invention describes a cone crusher with stepless eccentricity adjustment according to an embodiment of the present invention. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0046] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0047] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0049] Figure 1This is a structural diagram of a cone crusher 10 with stepless eccentricity adjustment according to an embodiment of the present invention. Figure 1 As shown, and refer to Figures 2 to 6 This invention provides a cone crusher 10 with stepless eccentricity adjustment, comprising a vertically arranged lower frame 400, a fixed cone 100, a movable cone 200, and an eccentric sleeve 300. The fixed cone 100 is fixedly disposed above the lower frame 400 and has a fixed cavity. The inner wall of the fixed cavity forms a first conical surface. The top of the fixed cavity has an inlet, and the bottom of the fixed cavity has an outlet, with the inlet being smaller than the outlet. The outer wall of the movable cone 200 forms a second conical surface, which has a first axis, i.e., the eccentric rotation center line. The movable cone 200 is movably disposed at the outlet, and the first and second conical surfaces are spaced apart to form a crushing cavity between them. An angle is formed between the eccentric rotation center line 301 and the main rotation center line 901. The movable cone 200 has a vertical cavity opening downwards. The eccentric sleeve 300 is rotatably mounted on the lower frame 400 around the second axis, which is the rotation center line of the main machine, and at least its upper part is inserted into the vertical cavity. The eccentric sleeve 300 can also move up and down. The outer wall of the eccentric sleeve 300 contacts and abuts against the inner wall of the vertical cavity.

[0050] When the cone crusher 10 is working, the eccentric sleeve 300 rotates around the rotation center line 901 of the main unit. The outer wall of the eccentric sleeve 300 contacts the inner wall of the vertical cavity, causing the moving cone 200 to oscillate around the eccentric rotation center line, thereby changing the size of the gap between the first and second cone surfaces. When large pieces of raw materials such as sand and gravel enter the crushing chamber from the inlet of the fixed cone 100, the large pieces of sand and gravel are crushed by the moving cone 200 within the crushing chamber. When it is necessary to adjust the eccentricity, the eccentric sleeve 300 moves upward, that is, deeper into the vertical cavity. Figure 3 This is a comparison diagram of the eccentricity of the eccentric sleeve 300 of the cone crusher 10 before and after it moves upward, according to an embodiment of the present invention. Figure 3 As shown, the lateral distance between the intersection of the main rotation center line 901 and the eccentric rotation center line 301 with the dashed circle is the eccentricity ECC / 2, which is half of the eccentricity. Figure Z shows the eccentricity of the cone crusher 10 before the eccentric sleeve 300 moves, and Figure Y shows the eccentricity of the cone crusher 10 after the eccentric sleeve 300 moves upward. It is clear that the eccentricity of the cone crusher 10 after the eccentric sleeve 300 moves upward is greater than the eccentricity before the eccentric sleeve 300 moves. This increased eccentricity increases the crushing ratio of the cone crusher 10, allowing large pieces of sand and gravel to be crushed into smaller particles. This setting allows for stepless adjustment of the eccentricity during the operation of the cone crusher 10 without disassembling the machine, ensuring safety and speed. The eccentricity can be quickly adjusted according to changes in the material on site, thereby improving the working efficiency and adaptability of the cone crusher 10.

[0051] In some embodiments of the present invention, the rotation center line of the main unit is set vertically.

[0052] In some embodiments of the present invention, the cone crusher 10 further includes a first driving device for driving the eccentric sleeve 300 to move up and down.

[0053] Furthermore, in some embodiments of the present invention, such as Figure 1 As shown, the first driving device includes a hydraulic cylinder 500 mounted on the lower frame 400. The hydraulic cylinder 500 includes a vertically mounted cylinder rod and a thrust bearing 600 connected to the cylinder rod. The upper surface of the thrust bearing 600 abuts against the lower surface of the eccentric sleeve 300.

[0054] When the eccentric sleeve 300 needs to move upward, hydraulic oil is injected into the cylinder through the oil inlet. The cylinder rod of the cylinder 500 extends upward, pushing the thrust bearing 600 upward, which in turn pushes the eccentric sleeve 300 upward, thus changing the eccentricity. The upper surface of the thrust bearing 600 is rotatable. When the eccentric sleeve rotates, the upper surface rotates with the eccentric sleeve 300, reducing the resistance to the movement of the eccentric sleeve 300. The cylinder 500 has advantages such as high precision, high torque, good stability, ease of use, good wear resistance, and high power output, making it particularly suitable for crushers operating in harsh environments.

[0055] Furthermore, in some embodiments of the present invention, such as Figure 2 As shown, the thrust bearing 600 is threadedly connected to the cylinder block. For example, the bearing has external threads, one end of the cylinder rod has internal threads, and one end of the cylinder rod is threadedly connected to the thrust bearing 600.

[0056] Preferably, in some embodiments of the present invention, there are multiple hydraulic cylinders 500, which are evenly distributed along the circumference of the thrust bearing 600. The arrangement of multiple hydraulic cylinders 500 makes the force on the thrust bearing 600 more uniform and the movement unimpeded.

[0057] In other embodiments of the present invention, the first driving device includes a cylinder disposed on the lower frame 400, and a thrust bearing 600 is connected to the cylinder rod for the up-and-down movement of the cylinder.

[0058] In some embodiments of the present invention, such as Figure 6As shown, the cone crusher 10 also includes a height detection device for detecting the height of the eccentric sleeve 300, thereby obtaining the height change L of the suspension point O. The change in eccentricity can be obtained by detecting the height of the eccentric sleeve 300. The intersection point of the eccentric rotation center line 301 and the main machine rotation center line 901 can be called the suspension point O. When the eccentric sleeve moves upward, the height of the suspension point O will also change accordingly; if the eccentric sleeve moves upward by L, the height of the suspension point O will also increase by L. The distance from the suspension point to the outlet edge of the fixed cone 100 is R, and the dashed line in the figure represents a circle with radius R. Distance D is the outlet diameter. H is the height from the suspension point O to the outlet edge. According to the Pythagorean theorem...

[0059]

[0060] If the tilt angle α of the eccentric sleeve 300 is known, then the eccentricity ECC of the main unit is...

[0061]

[0062] According to this formula, parameters H, α, and D are all known parameters. By simply detecting the change in height L of the eccentric sleeve 300, the eccentricity corresponding to the height of the eccentric sleeve 300 can be obtained, and the crushing ratio corresponding to the eccentricity can be obtained. The crushing capacity of the crusher can be obtained quickly.

[0063] Furthermore, in some embodiments of the present invention, the height detection device includes a magnet 701 and a height sensor 702. The magnet 701 is mounted on the thrust bearing 600, and the height sensor 702 is mounted on the lower frame 400 for detecting the height of the magnet 701. The change in height of the magnet is equal to the change in height of the eccentric sleeve.

[0064] As the thrust bearing 600 moves upward, the magnet 701 moves upward along with it. The height sensor 702 detects the height of the magnet 701 and can obtain the change in its height, thus obtaining L. Based on the above formula, the eccentricity ECC of the host machine can be deduced, thereby achieving the purpose of real-time adjustment of the eccentricity.

[0065] In some alternative embodiments of the invention, the magnet 701 may also be disposed on the eccentric sleeve 300.

[0066] Preferably, in some embodiments of the present invention, the height sensor 702 is located directly below the magnet 701 and disposed on the bottom surface of the lower frame 400.

[0067] Furthermore, in some embodiments of the present invention, such as Figure 4As shown, the thrust bearing 600 has a first mounting cavity with an opening facing downwards. The height detection device also includes a magnet retaining nut 703, which has a second mounting cavity with an opening facing upwards. The magnet 701 is disposed in the second mounting cavity, which is located within the first mounting cavity. This arrangement protects the magnet 701, ensuring that it will not be damaged during the movement of the thrust bearing 600.

[0068] Furthermore, in some embodiments of the present invention, such as Figure 4 As shown, the height detection device also includes a magnet spacer 704, which is located between the magnet 701 and the bottom wall of the second mounting cavity. The magnet spacer 704 also serves to protect the magnet 701 and prevent it from being damaged by force.

[0069] Furthermore, in some embodiments of the present invention, the magnet 701 is annular, and the magnet spacer 704 is also annular.

[0070] In some embodiments of the present invention, the magnet fixing nut 703 includes a mounting cavity and a base located below and connected to the mounting cavity, wherein the mounting cavity has a second mounting cavity. The mounting cavity is disposed within a first mounting cavity, and the base is located outside the first mounting cavity. The base facilitates the installation of the magnet fixing nut 703. A groove is provided at the lower frame 400 corresponding to the base, and the base is disposed within the groove. This arrangement saves installation volume of the magnet fixing nut 703.

[0071] In some embodiments of the present invention, the cone crusher 10 includes a second drive device and a transmission device. The second drive device is mounted on the lower frame 400. The second drive device drives the eccentric sleeve 300 to rotate via the transmission device.

[0072] Furthermore, in some embodiments of the present invention, such as Figure 2 As shown, the second drive device is a motor. The transmission device includes a first bevel gear 801 and a second bevel gear 802 that mesh with each other. The first bevel gear 801 is mounted on the lower frame 400 and connected to the eccentric sleeve 300, and is configured to drive the eccentric sleeve 300 to rotate. The second bevel gear 802 is connected to the output shaft of the motor.

[0073] When the eccentric sleeve 300 needs to rotate, the motor causes the output shaft to rotate, which in turn drives the second bevel gear 802 to rotate. The second bevel gear 802 then drives the first bevel gear 801 to rotate, and the first bevel gear 801 in turn drives the eccentric sleeve to rotate.

[0074] In some embodiments of the present invention, such as Figure 5As shown, the eccentric sleeve 300 includes an eccentric portion and a fixed portion connected to the eccentric portion and located below the eccentric portion. At least the upper part of the eccentric portion is located in a vertical cavity, the outer surface of the fixed portion is a cylindrical surface, and the central axis of the fixed portion is the rotation center line 901 of the main machine. A vertical keyway is provided on the inner circular surface of the first bevel gear 801. The cone crusher 10 also includes a sliding key 805, which is fixedly disposed on the fixed portion of the eccentric sleeve 300 and located in the keyway. When the first bevel gear 801 and the eccentric sleeve 300 move up and down relative to each other, the sliding key 805 moves in the keyway. When the first bevel gear 801 rotates, the first bevel gear 801 drives the eccentric sleeve 300 to rotate.

[0075] Bevel gears are widely used in various transmission systems that require large torque conversion due to their ability to change the direction of transmission, such as the transmission systems of large mechanical equipment like mining machinery and coal mining machinery.

[0076] Furthermore, in some embodiments of the present invention, such as Figure 5 As shown, there are multiple sliding keys 805, evenly distributed along the outer surface of the fixing part of the eccentric sleeve 300. Preferably, there are four sliding keys 805.

[0077] In some embodiments of the present invention, the cone crusher 10 further includes a fixing device, which includes a gear support ring 803 and a pressure block 804. The first bevel gear 801 is connected to the gear support ring 803, and the pressure block 804 connects the gear support ring 803 to the lower frame 400 to prevent the gear support ring 15 from jumping upward.

[0078] In some embodiments of the present invention, the lower frame 400 includes a vertically arranged mounting hole, and the cone crusher 10 also includes a main shaft 900. The axis of the main shaft 900 is the rotation center line 901 of the main machine. The lower end of the main shaft 900 is inserted into the mounting hole, and the upper end of the main shaft 900 passes through the inner hole of the eccentric sleeve 300 and enters the vertical cavity.

[0079] The eccentric sleeve 300 rotates around the axis of the main shaft 900, i.e., the rotation center line 901 of the main machine, causing the moving cone 200 to swing. The main shaft 900 passes through the inner circle of the first bevel gear 801 and is inserted into the mounting hole.

[0080] In some embodiments of the present invention, the spindle is interference-fitted with the mounting hole.

[0081] In some embodiments of the present invention, the cone crusher 10 further includes a concave spherical bearing and a ball bearing that cooperate with each other. The concave spherical bearing and the ball bearing are located between the upper surface of the main shaft 900 and the top wall of the vertical cavity. The spherical surface of the concave spherical bearing 201 and the spherical surface of the ball bearing form a sliding friction pair. When the eccentric sleeve 300 is raised, the concave spherical bearing 201 and the ball bearing in the vertical cavity will compensate for the deviation caused by the rise of the eccentric sleeve 300 that changes the position of the moving cone 200.

[0082] Furthermore, in some embodiments of the present invention, the ball bearing 202 is fixedly connected to the top wall of the vertical cavity, and the concave spherical bearing 201 is fixedly connected to the upper end of the main shaft 900.

[0083] In other embodiments of the present invention, the concave spherical bearing 201 is fixedly connected to the top wall of the vertical cavity, and the ball bearing 202 is fixedly connected to the upper end of the main shaft 900.

[0084] In some embodiments of the present invention, the cone crusher 10 further includes an upper frame, which is located above the lower frame 400, and the fixed cone 100 is fixed on the upper frame.

[0085] In some embodiments of the present invention, such as Figure 7 As shown, the cone crusher 10 also includes an electrical control system, which comprises an input unit 1100, a hydraulic unit 1300, a detection unit 1400, and an electrical control unit 1200. The input unit 1100 is used to input the gradation information of the material to be crushed. The hydraulic unit 1300 is used to drive the cylinder rod to extend. The detection unit 1400 is used to obtain the extension length of the cylinder rod and transmit this information. The electrical control unit 1200 receives information from the input unit 1100 and the detection unit 1400, and controls the operating state of the hydraulic unit 1300 based on the information from the input unit 1100 and / or the detection unit 1400.

[0086] The electronic control unit 1200 receives the material gradation information from the input unit 1100 and controls the hydraulic unit 1300 to work according to the material gradation information, so that the cylinder rod extends. The detection unit 1400 detects the length of the cylinder rod extension and feeds the length of the cylinder rod extension back to the electronic control unit 1200. The electronic control unit 1200 can obtain the height of the eccentric sleeve according to the length of the cylinder rod extension, and then obtain the crushing ratio corresponding to the height of the eccentric sleeve. When the length of the cylinder rod extension meets the requirements, the electronic control unit 1200 controls the hydraulic unit 1300 to stop working.

[0087] In some embodiments of the present invention, the detection unit 1400 includes a height detection device, that is, the length of the cylinder rod extension is determined by detecting the height of the eccentric sleeve. Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Therefore, the scope of the present invention should be understood and considered to cover all such other variations or modifications.

Claims

1. A cone crusher with stepless eccentricity adjustment, characterized in that, include: The lower frame is vertically arranged and includes vertically arranged mounting holes; A fixed cone is fixedly disposed above the lower frame. The fixed cone has a fixed cavity, the inner wall of which forms a first conical surface. The top of the fixed cavity has an inlet and the bottom of the fixed cavity has an outlet, the inlet being smaller than the outlet. A moving cone, the outer wall of which forms a second conical surface, the second conical surface having an eccentric rotation center line; the moving cone is movably disposed at the outlet, and the first conical surface and the second conical surface are spaced apart to form a crushing chamber between the first conical surface and the second conical surface; the moving cone has a vertical cavity opening downwards; An eccentric sleeve is rotatably mounted on the lower frame about the rotation center line of the main unit and at least its upper part is inserted into the vertical cavity. The eccentric sleeve can also move up and down. There is an angle between the eccentric rotation center line and the rotation center line of the main unit. The eccentric sleeve has an inclined outer wall, which abuts against the peripheral wall of the vertical cavity in a relatively sliding surface contact manner. The spindle has its axis as the rotation center line of the main machine. The lower end of the spindle is inserted into the mounting hole, and the upper end of the spindle passes through the inner hole of the eccentric sleeve and is inserted into the vertical cavity. A concave spherical bearing and a ball bearing are provided between the upper surface of the spindle and the top wall of the vertical cavity.

2. The cone crusher with stepless eccentricity adjustment according to claim 1, characterized in that, It also includes a first driving device for driving the eccentric sleeve to move up and down.

3. The cone crusher with stepless eccentricity adjustment according to claim 2, characterized in that, The first driving device includes: A hydraulic cylinder is mounted on the lower frame, and the hydraulic cylinder includes a vertically arranged cylinder rod. A thrust bearing is provided, which is connected to the cylinder rod of the hydraulic cylinder; the upper surface of the thrust bearing abuts against the lower surface of the eccentric sleeve.

4. The cone crusher with stepless eccentricity adjustment according to claim 3, characterized in that, It also includes a height detection device for detecting the height of the eccentric sleeve.

5. The cone crusher with stepless eccentricity adjustment according to claim 4, characterized in that, The height detection device includes: A magnet, which is mounted on the thrust bearing or the eccentric sleeve; A height sensor, mounted on the lower frame, is used to detect the height of the magnet.

6. The cone crusher with stepless eccentricity adjustment according to claim 5, characterized in that, The thrust bearing has a first mounting cavity that opens downwards; The height detection device also includes: A magnet fixing nut has a second mounting cavity with an upward opening, and the magnet is disposed in the second mounting cavity, which is located within the first mounting cavity.

7. The cone crusher with stepless eccentricity adjustment according to claim 1, characterized in that, Also includes: The second drive unit is mounted on the lower frame; The transmission device, wherein the second drive device drives the eccentric sleeve to rotate via the transmission device; The second driving device is a motor; The transmission device includes a first bevel gear and a second bevel gear that mesh with each other. The first bevel gear is mounted on the lower frame and connected to the eccentric sleeve. The first bevel gear is configured to drive the eccentric sleeve to rotate. The second bevel gear is connected to the output shaft of the motor.

8. The cone crusher with stepless eccentricity adjustment according to claim 7, characterized in that, The cone crusher also includes a fixing device, which includes a gear support ring and a pressure block. The gear support ring is connected to the first bevel gear, and the pressure block is used to connect the gear support ring to the lower frame.

9. The cone crusher with stepless eccentricity adjustment according to claim 3, characterized in that, It also includes an electronic control system, which comprises: Input unit, the input unit is used to input the material gradation information to be crushed; A hydraulic unit is used to drive the cylinder rod to extend; A detection unit is used to obtain the extension length of the cylinder rod and transmit the extension length information of the cylinder rod. An electronic control unit (ECU) receives information from the input unit and information from the detection unit, and controls the operating state of the hydraulic unit based on the information from the input unit and / or the information from the detection unit.

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