Discharge port belt load adjusting device of a conical crushing main machine

Abstract

The utility model relates to conical crushing equipment technical field, concretely relates to a kind of conical crushing host discharge port belt load adjusting device, it is characterized by: including fixed cone, adjusting ring, locking ring, jack and hydraulic motor, locking ring is set up upside down with adjusting ring and is all screw engagement connection in the outside of fixed cone, jack is multiple and is used to drive locking ring to move up and down, hydraulic motor is transmission connection with fixed cone by gear assembly, hydraulic motor and jack are connected with hydraulic control system, the upper thread surface of the first internal thread on locking ring is equipped with multiple first annular wear blocks, the lower thread surface of the second internal thread on adjusting ring is equipped with multiple second annular wear blocks, when hydraulic control system controls multiple jack to be in half clamping state, control hydraulic motor drives fixed cone to rotate to realize the belt load adjustment of discharge port.The utility model can realize belt load adjustment discharge port, need not to carry out shutdown stop material, it is favorable to promote the overall production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of cone crusher equipment, specifically to a load-bearing adjustment device for the discharge port of a cone crusher main unit. Background Technology

[0002] During operation, a cone crusher uses a motor to drive an eccentric cone through a transmission device including a V-belt, pulleys, and bevel gears. Due to the eccentricity of the cone, the moving cone moves closer to and further away from the fixed cone around its centerline. The material is continuously subjected to impact, compression, and bending within the crushing chamber, thus achieving the crushing operation. Existing cone crushers mainly include floating bowl-shaped cone crushers, spiral cone crushers, and floating head cone crushers. The existing spiral cone crusher's discharge port adjustment structure consists of a locking ring and an adjusting ring, both threadedly connected to the outside of the fixed cone. Multiple jacks are used to move the locking ring up and down, tightening or loosening it against the fixed cone. A hydraulic motor, connected to the fixed cone via a gear assembly, rotates the fixed cone, allowing it to move up and down relative to the adjusting ring, thus adjusting the discharge port. The locking ring fully tightens the fixed cone to maintain its position. To ensure stability during the crushing process under load and prevent the fixed cone from being rotated by the material, thus maintaining the stability of the discharge port, the locking ring is completely released from the fixed cone to allow the hydraulic motor to drive the fixed cone to rotate. However, existing locking rings and adjusting rings have direct and complete contact with the fixed cone's threaded surfaces, and the jack cannot reduce the pressure to a certain value to achieve a semi-clamped state. If the jack is completely released, the stability of the fixed cone during the crushing process under load cannot be maintained; if the jack is completely tightened, the hydraulic motor cannot drive the fixed cone to rotate. Forced adjustment will damage and seize the threaded surfaces between the locking ring and adjusting ring and the fixed cone, making it impossible to adjust the discharge port under load. Therefore, when adjusting the discharge port, it is necessary to stop the machine and the material, and then completely release the jack to release the locking ring from the fixed cone. However, this can affect the overall production efficiency. In view of this, this problem has been studied in depth, hence this case. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a load-adjustable discharge port device for a cone crusher that can adjust the discharge port under load without stopping the machine or material, thereby improving the overall production efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A load-bearing adjustment device for the discharge port of a cone crusher includes a fixed cone, an adjusting ring, a locking ring, jacks, and a hydraulic motor. The locking ring and the adjusting ring are arranged vertically and threadedly connected to the outside of the fixed cone. Multiple jacks are used to drive the locking ring to move up and down. The hydraulic motor is connected to the fixed cone through a gear assembly and is used to drive the fixed cone to rotate. The hydraulic motor and the jacks are both connected to a hydraulic control system. Multiple spaced first annular wear-resistant blocks are fixed on the upper thread surface of the first internal thread on the locking ring. Multiple spaced second annular wear-resistant blocks are fixed on the lower thread surface of the second internal thread on the adjusting ring. When the hydraulic control system controls the multiple jacks to be in a semi-clamped state, it controls the hydraulic motor to drive the fixed cone to rotate in order to achieve load adjustment of the discharge port.

[0005] Furthermore, the hardness of the first annular wear-resistant block is greater than that of the second annular wear-resistant block.

[0006] Furthermore, the first annular wear-resistant block is a polymer wear-resistant block, and the second annular wear-resistant block is a copper wear-resistant block.

[0007] Furthermore, the number of both the first and second annular wear-resistant blocks is 2-4.

[0008] Furthermore, the upper thread surface of the first internal thread is provided with multiple spaced first annular grooves that are adapted to the first annular wear-resistant blocks. The number of first annular wear-resistant blocks is consistent with the number of first annular grooves and is set one-to-one. The first annular wear-resistant blocks are embedded in the first annular grooves and protrude from the upper thread surface of the first internal thread. The lower thread surface of the second internal thread is provided with multiple spaced second annular grooves that are adapted to the second annular wear-resistant blocks. The number of second annular wear-resistant blocks is consistent with the number of second annular grooves and is set one-to-one. The second annular wear-resistant blocks are embedded in the second annular grooves and protrude from the upper thread surface of the second internal thread.

[0009] Furthermore, the longitudinal sections of both the first and second annular wear-resistant blocks are square in shape.

[0010] Furthermore, there are two hydraulic motors.

[0011] Furthermore, the hydraulic control system includes a ring-shaped series oil circuit, a jack inlet oil circuit, a jack return oil circuit, a jack inlet and outlet oil circuit, a semi-clamping return oil circuit, and a full-relief return oil circuit. The ring-shaped series oil circuit is used to connect multiple jacks in series sequentially. One end of the jack inlet oil circuit is connected to the oil supply mechanism, and the other end is connected to the inlet port of a two-position four-way solenoid directional valve. One end of the jack inlet and outlet oil circuit is connected to the second port of the two-position four-way solenoid directional valve, and the other end is connected to the ring-shaped series oil circuit. Single... The jack's return oil circuit is connected at one end to the return port of a two-position four-way solenoid directional valve, and at the other end to the hydraulic oil tank. The semi-clamping return oil circuit is connected at one end to a ring-shaped series oil circuit, and at the other end to the hydraulic oil tank. A two-position semi-clamping solenoid on / off valve and a relief valve are sequentially installed along the oil outlet direction on the semi-clamping return oil circuit. The full-pressure relief return oil circuit is connected at one end to a ring-shaped series oil circuit, and at the other end to the hydraulic oil tank. A first pressure sensor and a two-position full-pressure relief solenoid on / off valve are sequentially installed along the oil outlet direction on the full-pressure relief return oil circuit.

[0012] Furthermore, the hydraulic control system also includes a hydraulic motor inlet oil circuit, a hydraulic motor return oil circuit, a first inlet / outlet oil circuit, and a second inlet / outlet oil circuit. One end of the hydraulic motor inlet oil circuit is connected to the first port of a two-position four-way solenoid directional valve, and the other end is connected to the inlet port of a three-position six-way solenoid directional valve. One end of the first inlet / outlet oil circuit is connected to the first port of the three-position six-way solenoid directional valve, and the other end is connected to the first inlet / outlet port of the hydraulic motor. One end of the second inlet / outlet oil circuit is connected to the second port of the three-position six-way solenoid directional valve, and the other end is connected to the second inlet / outlet port of the hydraulic motor. A sequence valve is connected between the first and second inlet / outlet oil circuits, and the sequence valve is connected to a check valve through a connecting oil circuit. One end of the hydraulic motor return oil circuit is connected to the return port of the three-position six-way solenoid directional valve, and the other end is connected to the hydraulic oil tank.

[0013] Furthermore, a second pressure sensor is installed in the hydraulic motor's oil inlet circuit.

[0014] As described above, the discharge port adjustment device for a cone crusher provided by this utility model has the following beneficial effects: the upper thread surface of the first internal thread of the locking ring contacts the lower thread surface of the external thread of the fixed cone through multiple spaced first annular wear-resistant blocks, thereby reducing the thread contact area between the locking ring and the fixed cone and reducing the frictional resistance between them; the lower thread surface of the second internal thread of the adjusting ring contacts the upper thread surface of the external thread of the fixed cone through multiple spaced second annular wear-resistant blocks, thereby reducing the thread contact area between the adjusting ring and the fixed cone. The contact area is increased to reduce the frictional resistance between the two. At the same time, the hydraulic control system controls the pressure of multiple jacks to decrease to a certain value, and puts multiple jacks in a semi-clamped state, but not completely loosened. At this time, the locking ring is not completely pressed against the fixed cone, but the locking ring can temporarily maintain the stability of the fixed cone during the load crushing process. At the same time, it allows the hydraulic motor to drive the fixed cone to rotate stably, and will not damage the threaded surface between the locking ring and the adjusting ring and the fixed cone. It can realize the adjustment of the discharge port under load without stopping the machine and material, which is conducive to improving the overall production efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a load-bearing adjustment device for the discharge port of a cone crusher according to the present invention.

[0016] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0017] Figure 3 This is a schematic diagram of the local structure of the adjustment ring.

[0018] Figure 4 This is a partial structural diagram of the locking ring.

[0019] Figure 5 This is a schematic diagram of the hydraulic control principle of a load-bearing adjustment device for the discharge port of a cone crusher according to this utility model.

[0020] In the diagram: 1-Fixed cone; 2-Adjusting ring; 21-Second internal thread; 211-Second annular groove; 3-Locking ring; 31-First internal thread; 311-First annular groove; 4-Jack; 5-Hydraulic motor; 6-Gear assembly; 711-Annular series oil circuit; 712-Jack inlet oil circuit; 713-Jack return oil circuit; 714-Jack inlet and outlet oil circuits; 7141-Check valve; 7142-Accumulator; 715-Half-clamping return oil circuit; 7151-Half-clamping two-position solenoid on / off valve; 7152-Relief valve; 716 - Full pressure relief return oil circuit; 7161 - First pressure sensor; 7162 - Full pressure relief two-position solenoid on / off valve; 72 - Oil supply mechanism; 73 - Two-position four-way solenoid directional valve; 74 - Hydraulic oil tank; 751 - Hydraulic motor inlet oil circuit; 7511 - Second pressure sensor; 752 - Hydraulic motor return oil circuit; 753 - First inlet / outlet oil circuit; 754 - Second inlet / outlet oil circuit; 76 - Three-position six-way solenoid directional valve; 77 - Sequence valve; 771 - Connecting oil circuit; 81 - First annular wear-resistant block; 82 - Second annular wear-resistant block. Detailed Implementation

[0021] The present invention will be further described below through specific embodiments.

[0022] like Figures 1 to 5 As shown, the present invention discloses a load-bearing adjustment device for the discharge port of a cone crusher, comprising a fixed cone 1, an adjusting ring 2, a locking ring 3, jacks 4, and a hydraulic motor 5. The locking ring 3 and the adjusting ring 2 are arranged vertically and threadedly connected to the outside of the fixed cone 1. Multiple jacks 4 are used to drive the locking ring 3 to move vertically. The hydraulic motor 5 is connected to the fixed cone 1 via a gear assembly 6 and is used to drive the fixed cone 1 to rotate. Both the hydraulic motor 5 and the jacks 4 are connected to a hydraulic control system. Multiple spaced first annular wear-resistant blocks 81 are fixedly provided on the upper thread surface of the first internal thread 31 on the locking ring 3. Multiple spaced second annular wear-resistant blocks 82 are fixedly provided on the lower thread surface of the second internal thread 21 on the adjusting ring 2. When the hydraulic control system controls the multiple jacks 4 to be in a semi-clamped state, it controls the hydraulic motor 5 to drive the fixed cone 1 to rotate to achieve load adjustment of the discharge port.

[0023] The upper thread surface of the first internal thread 31 of the locking ring 3 contacts the lower thread surface of the external thread of the fixed cone 1 through a plurality of spaced first annular wear-resistant blocks 81, thereby reducing the thread contact area between the locking ring 3 and the fixed cone 1 and reducing the frictional resistance between them. Similarly, the lower thread surface of the second internal thread 21 of the adjusting ring 2 contacts the upper thread surface of the external thread of the fixed cone 1 through a plurality of spaced second annular wear-resistant blocks 82, thereby reducing the thread contact area between the adjusting ring 2 and the fixed cone 1 and reducing the frictional resistance between them. The hydraulic control system controls the pressure of multiple jacks 4 to decrease to a certain value, and puts multiple jacks 4 in a semi-clamped state, but not completely loosened. At this time, the locking ring 3 is not completely pressed against the fixed cone 1, but the locking ring 3 can temporarily maintain the stability of the fixed cone 1 during the load crushing process. At the same time, it allows the hydraulic motor 5 to drive the fixed cone 1 to rotate stably, and will not damage the threaded surfaces between the locking ring 3 and the adjusting ring 2 and the fixed cone 1. It can realize the adjustment of the discharge port under load without stopping the machine and material, which is conducive to improving the overall production efficiency.

[0024] The hardness of the first annular wear-resistant block 81 is greater than that of the second annular wear-resistant block 82. Preferably, the first annular wear-resistant block 81 is a polymer wear-resistant block and the second annular wear-resistant block 82 is a copper wear-resistant block. By setting the hardness of the first annular wear-resistant block 81 to be relatively hard, the stability of the locking ring 3 when it is fully pressed against the fixed cone 1 can be better ensured. By setting the hardness of the second annular wear-resistant block 82 to be relatively soft, the lower thread surface of the external thread of the fixed cone 1 can be better ensured when the discharge port is adjusted under load.

[0025] Preferably, the number of the first annular wear-resistant block 81 and the second annular wear-resistant block 82 are both 2-4.

[0026] Correspondingly, the upper thread surface of the first internal thread 31 is provided with a plurality of spaced first annular grooves 311 that are adapted to the first annular wear-resistant block 81. The number of the first annular wear-resistant blocks 81 is consistent with the number of the first annular grooves 311 and is arranged in a one-to-one correspondence. The first annular wear-resistant blocks 81 are embedded in the first annular grooves 311 and protrude from the upper thread surface of the first internal thread 31. The lower thread surface of the second internal thread 21 is provided with a plurality of spaced second annular grooves 211 that are adapted to the second annular wear-resistant blocks 82. The number of the second annular wear-resistant blocks 82 is consistent with the number of the second annular grooves 211 and is arranged in a one-to-one correspondence. The second annular wear-resistant blocks 82 are embedded in the second annular grooves 211 and protrude from the upper thread surface of the second internal thread 21.

[0027] The longitudinal sections of both the first annular wear-resistant block 81 and the second annular wear-resistant block 82 are square.

[0028] Preferably, there are two hydraulic motors 5, which facilitates the provision of stronger driving force to better drive the fixed cone 1 to rotate during load adjustment.

[0029] The hydraulic control system includes a ring-shaped series oil circuit 711, a jack inlet oil circuit 712, a jack return oil circuit 713, a jack inlet / outlet oil circuit 714, a semi-clamping return oil circuit 715, and a full-pressure relief return oil circuit 716. The ring-shaped series oil circuit 711 is used to connect multiple jacks 4 in series. One end of the jack inlet oil circuit 712 is connected to the oil supply mechanism 72, and the other end of the jack inlet oil circuit 712 is connected to the oil inlet of the two-position four-way solenoid directional valve 73. The jack inlet / outlet oil passage 714 is connected at one end to the second port of the two-position four-way solenoid directional valve 73, and at the other end to the annular series oil passage 711. A one-way valve 7141 and an accumulator 7142 are sequentially arranged along the oil inlet direction on the jack inlet / outlet oil passage 714. One end of the jack return oil passage 713 is connected to the return port of the two-position four-way solenoid directional valve 73, and at the other end to... The hydraulic oil tank 74 is connected to the hydraulic oil tank. One end of the semi-clamping return oil passage 715 is connected to the annular series oil passage 711, and the other end of the semi-clamping return oil passage 715 is connected to the hydraulic oil tank 74. A semi-clamping two-position solenoid on / off valve 7151 and an overflow valve 7152 are sequentially arranged along the oil outlet direction on the semi-clamping return oil passage 715. One end of the full-pressure relief return oil passage 716 is connected to the annular series oil passage 711, and the other end of the full-pressure relief return oil passage 716 is connected to the hydraulic oil tank. The system is connected in phase 74. The full pressure relief return oil circuit 716 is provided with a first pressure sensor 7161 and a full pressure relief two-position electromagnetic on / off valve 7162 in sequence along the oil outlet direction. In this way, through the semi-clamping return oil circuit 715, the overflow pressure of the overflow valve 7152 can reduce the pressure of the multiple jacks 4 to a certain value and put the multiple jacks 4 in a semi-clamping state, but not completely loosened. In addition, preferably, the overflow pressure of the overflow valve 7152 is 63 Bar.

[0030] Accordingly, the oil supply mechanism 72 includes a drive component and a hydraulic pump with a transmission connection, thereby providing stable oil supply to the hydraulic control system. The drive component is an engine or an electric motor.

[0031] The hydraulic control system further includes a hydraulic motor inlet oil passage 751, a hydraulic motor return oil passage 752, a first inlet / outlet oil passage 753, and a second inlet / outlet oil passage 754. One end of the hydraulic motor inlet oil passage 751 is connected to the first port of the two-position four-way solenoid directional valve 73, and the other end of the hydraulic motor inlet oil passage 751 is connected to the inlet port of the three-position six-way solenoid directional valve 76. One end of the first inlet / outlet oil passage 753 is connected to the first port of the three-position six-way solenoid directional valve 76, and the other end of the first inlet / outlet oil passage 753 is connected to the first inlet / outlet port of the hydraulic motor 5. Then, one end of the second inlet / outlet oil passage 754 is connected to the second oil port of the three-position six-way solenoid directional valve 76, and the other end of the second inlet / outlet oil passage 754 is connected to the second inlet / outlet oil port of the hydraulic motor 5. A sequence valve 77 is connected between the first inlet / outlet oil passage 753 and the second inlet / outlet oil passage. The sequence valve 77 is connected to the check valve 7141 through the connecting oil passage 771. One end of the hydraulic motor return oil passage 752 is connected to the return oil port of the three-position six-way solenoid directional valve 76, and the other end of the hydraulic motor return oil passage 752 is connected to the hydraulic oil tank 74.

[0032] The hydraulic motor oil inlet circuit 751 is equipped with a second pressure sensor 7511. When the moving cone liner and the fixed cone liner are worn during crushing, the discharge port can be adjusted to a smaller size until the moving cone liner and the fixed cone liner are in contact. At this time, the second pressure sensor 7511 can detect a rapid increase in the oil inlet pressure, which makes it easy to determine that the position where the fixed cone liner and the moving cone liner are in contact is zero, thereby realizing the zero setting of the discharge port and ensuring the accuracy of the discharge port setting.

[0033] The above are only some specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. A load-bearing adjustment device for the discharge port of a cone crusher, comprising a fixed cone, an adjusting ring, a locking ring, jacks, and a hydraulic motor, wherein the locking ring and the adjusting ring are arranged vertically and threadedly connected to the outside of the fixed cone; multiple jacks are used to drive the locking ring to move vertically; the hydraulic motor is driven by the fixed cone through a gear assembly and is used to drive the fixed cone to rotate; the hydraulic motor and the jacks are both connected to a hydraulic control system, characterized in that: The upper thread surface of the first internal thread on the locking ring is fixed with a plurality of spaced first annular wear-resistant blocks, and the lower thread surface of the second internal thread on the adjusting ring is fixed with a plurality of spaced second annular wear-resistant blocks. When the hydraulic control system controls the plurality of jacks to be in a semi-clamped state, it controls the hydraulic motor to drive the fixed cone to rotate in order to achieve load adjustment of the discharge port.

2. The discharge port load adjustment device for a cone crusher according to claim 1, characterized in that: The hardness of the first annular wear-resistant block is greater than that of the second annular wear-resistant block.

3. The load-bearing adjustment device for the discharge port of a cone crusher according to claim 1, characterized in that: The first annular wear-resistant block is a polymer wear-resistant block, and the second annular wear-resistant block is a copper wear-resistant block.

4. The load-bearing adjustment device for the discharge port of a cone crusher according to claim 1, characterized in that: The number of the first annular wear-resistant block and the second annular wear-resistant block is 2-4.

5. The load-bearing adjustment device for the discharge port of a cone crusher according to claim 1, characterized in that: The upper thread surface of the first internal thread is provided with a plurality of spaced first annular grooves that are adapted to the first annular wear-resistant block. The number of the first annular wear-resistant blocks is consistent with the number of the first annular grooves and is arranged in a one-to-one correspondence. The first annular wear-resistant blocks are embedded in the first annular grooves and protrude from the upper thread surface of the first internal thread. The lower thread surface of the second internal thread is provided with a plurality of spaced second annular grooves that are adapted to the second annular wear-resistant blocks. The number of the second annular wear-resistant blocks is consistent with the number of the second annular grooves and is arranged in a one-to-one correspondence. The second annular wear-resistant blocks are embedded in the second annular grooves and protrude from the upper thread surface of the second internal thread.

6. The load-bearing adjustment device for the discharge port of a cone crusher according to claim 1, characterized in that: Both the first annular wear-resistant block and the second annular wear-resistant block have square cross-sections.

7. The load-bearing adjustment device for the discharge port of a cone crusher according to claim 1, characterized in that: There are two hydraulic motors.

8. The discharge port load adjustment device for a cone crusher according to claim 1, characterized in that: The hydraulic control system includes a ring-shaped series oil circuit, a jack inlet oil circuit, a jack return oil circuit, a jack inlet and outlet oil circuit, a semi-clamping return oil circuit, and a full-relief return oil circuit. The ring-shaped series oil circuit is used to connect multiple jacks in series. One end of the jack inlet oil circuit is connected to the oil supply mechanism, and the other end is connected to the inlet of a two-position four-way solenoid valve. One end of the jack inlet and outlet oil circuit is connected to the second port of the two-position four-way solenoid valve, and the other end is connected to the ring-shaped series oil circuit. A check valve and an energy storage device are sequentially installed along the oil inlet direction on the jack inlet and outlet oil circuits. The device comprises a jack return oil circuit, one end of which is connected to the return port of the two-position four-way solenoid directional valve, and the other end of which is connected to the hydraulic oil tank. A semi-clamping return oil circuit is connected to the annular series oil circuit, and the other end of which is connected to the hydraulic oil tank. A semi-clamping two-position solenoid on / off valve and an overflow valve are sequentially arranged along the oil outlet direction on the semi-clamping return oil circuit. A full-pressure relief return oil circuit is connected to the annular series oil circuit, and the other end of which is connected to the hydraulic oil tank. A first pressure sensor and a full-pressure relief two-position solenoid on / off valve are sequentially arranged along the oil outlet direction on the full-pressure relief return oil circuit.

9. A load-bearing adjustment device for the discharge port of a cone crusher according to claim 8, characterized in that: The hydraulic control system further includes a hydraulic motor inlet oil circuit, a hydraulic motor return oil circuit, a first inlet / outlet oil circuit, and a second inlet / outlet oil circuit. One end of the hydraulic motor inlet oil circuit is connected to the first port of the two-position four-way solenoid directional valve, and the other end of the hydraulic motor inlet oil circuit is connected to the inlet port of the three-position six-way solenoid directional valve. One end of the first inlet / outlet oil circuit is connected to the first port of the three-position six-way solenoid directional valve, and the other end of the first inlet / outlet oil circuit is connected to the first inlet / outlet port of the hydraulic motor. One end of the second inlet / outlet oil circuit is connected to the second port of the three-position six-way solenoid directional valve, and the other end of the second inlet / outlet oil circuit is connected to the second inlet / outlet port of the hydraulic motor. A sequence valve is connected between the first inlet / outlet oil circuit and the second inlet / outlet oil circuit. The sequence valve is connected to the check valve through a connecting oil circuit. One end of the hydraulic motor return oil circuit is connected to the return port of the three-position six-way solenoid directional valve, and the other end of the hydraulic motor return oil circuit is connected to the hydraulic oil tank.

10. A load-bearing adjustment device for the discharge port of a cone crusher according to claim 9, characterized in that: A second pressure sensor is installed on the oil inlet line of the hydraulic motor.

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