An overload protection device for a single cylinder cone crusher

Abstract

The utility model relates to a conical crusher technical field especially a single cylinder conical crusher overload protection device, including single cylinder conical crusher and motor, and the motor is used for driving the transmission shaft of single cylinder conical crusher, the outer wall of transmission shaft is equipped with spring and the sleeve of right side of spring, the left end of spring is equipped with the blocking subassembly, through setting spring, sleeve, left pin, right pin, the middle axle between the transmission shaft of single cylinder conical crusher and the output shaft of motor drive, make in overload time, right pin can rotate to the sleeve right end face on the slope and make the transmission cut off between right pin and sleeve, make the motor drive the idling of middle axle, avoid overload and make transmission shaft sudden stop, the output shaft of motor continues to exert the torque of transmission shaft, make transmission shaft appear deformation and fracture, avoid transmission shaft to drive the mechanism of breaking simultaneously, cause the damage of mechanism of breaking.

Description

Technical Field

[0001] This utility model relates to the field of cone crusher technology, and in particular to an overload protection device for a single-cylinder cone crusher. Background Technology

[0002] In mining crushing operations, cone crushers are used to crush certain ores. When the cone crusher encounters hard materials or iron blocks and is overloaded, it cannot release the load quickly, which impacts the equipment and affects the equipment components and service life.

[0003] An existing technology, such as the overload protection device for a cone crusher disclosed in CN214554350U, includes: a mounting base plate, one end of which is fixedly installed on the outer side wall of the crusher feed hopper near the crushing mechanism; one end of a contact plate is hinged to the mounting base plate; the end of the contact plate away from the mounting base plate is hinged to one end of a swing rod via a hinge rod; a strip-shaped through hole is provided on the electromagnetic force plate; a safety indicator light is fixedly installed on the side wall of the electromagnetic force plate near the fixed mounting plate; the button of the safety indicator light corresponds to the strip-shaped through hole; and the other end of the lever can pass through the strip-shaped through hole and contact the button of the installed indicator light. This device has the effect of preventing the crusher from overloading and improving the service life of the crusher.

[0004] The aforementioned existing technology can alert operators to overload by illuminating a safety indicator light. However, during overload and operation, the drive shaft of the single-cylinder cone crusher is still driven by the motor, which can easily damage the drive shaft. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the fact that the drive shaft of a single-cylinder cone crusher is still driven by the motor during overload and manual operation, which can easily damage the drive shaft. Therefore, this invention proposes an overload protection device for a single-cylinder cone crusher.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: Design an overload protection device for a single-cylinder cone crusher, including a single-cylinder cone crusher and a motor, wherein the motor is used to drive the drive shaft of the single-cylinder cone crusher, a spring and a sleeve located on the right side of the spring are sleeved on the outer wall of the drive shaft, a blocking component is provided at the left end of the spring, a sliding groove is opened laterally on the outer wall of the sleeve, and a left pin is fixedly installed on the outer wall of the drive shaft, and the left pin is slidably disposed in the sliding groove; The right end of the sleeve is connected to a central shaft via an installation assembly. The right end of the central shaft is fixedly connected to the output shaft of the motor. A right pin is fixedly installed on the outer wall of the central shaft. The right end of the sleeve has a slot that matches the right pin. A ramp is provided on the rear side of the slot to facilitate the right pin's disengagement from the slot.

[0007] Furthermore, the outer wall of the sleeve is longitudinally provided with an interception groove, and the rear end of the interception groove is connected to and perpendicular to the sliding groove.

[0008] Furthermore, the blocking assembly includes a hexagonal nut threaded onto the drive shaft, with the right end face of the hexagonal nut abutting against a spring.

[0009] Furthermore, the mounting assembly includes a bearing housing mounted on the outside of the central shaft. The left end face of the bearing housing has four mounting holes, and screws are inserted into the mounting holes. The right end outer wall of each of the four screws is threaded with a pair of nuts located on both sides of the bearing housing. The left end of the four screws is threaded with a ring, and the left end of the ring is fixedly connected to a single-cylinder cone crusher.

[0010] Furthermore, the left end of the ring is provided with an annular groove, and a dustproof cylinder is threadedly connected inside the annular groove. The right end of the dustproof cylinder is sleeved on the outer wall of the bearing seat.

[0011] Furthermore, the sleeve includes two arc-shaped plates with semi-circular cross sections, and connecting plates are integrally formed on the front and rear sides of the two arc-shaped plates. Several insertion holes are opened on the top of the connecting plates on both sides of the upper arc-shaped plate, and screws are inserted into the insertion holes. The lower end of the screws is threaded to the connecting plates located on both sides of the lower arc-shaped plate.

[0012] Furthermore, a right-hand threaded hole is provided on the outer wall of the central shaft, and a right pin is connected to the internal thread of the right-hand threaded hole; a left-hand threaded hole is provided on the outer wall of the transmission shaft, and a left-hand threaded hole is connected to the internal thread of the left-hand threaded hole.

[0013] The present invention proposes an overload protection device for a single-cylinder cone crusher. The beneficial effects are as follows: by setting a spring, sleeve, left pin, right pin, and central shaft between the drive shaft of the single-cylinder cone crusher and the output shaft of the motor for transmission, the right pin can rotate along the slope to the right end face of the sleeve during overload, thus cutting off the transmission between the right pin and the sleeve. This allows the motor to drive the central shaft to idle, preventing the output shaft of the motor from continuing to apply torque to the drive shaft when the drive shaft suddenly stops due to overload, which could cause deformation and breakage of the drive shaft. Simultaneously, it prevents the drive shaft from continuing to drive the crushing mechanism, thus avoiding damage to the crushing mechanism. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the dustproof cylinder of this utility model after removal; Figure 3 This is a cross-sectional structural diagram of the present invention; Figure 4 This is an enlarged view of area A of this utility model.

[0015] In the diagram: 1. Single-cylinder cone crusher; 2. Motor; 21. Output shaft; 3. Drive shaft; 31. Left threaded hole; 4. Spring; 5. Sleeve; 51. Arc plate; 52. Connecting plate; 53. Screw; 6. Barrier assembly; 61. Hex nut; 7. Slide groove; 8. Left pin; 9. Mounting assembly; 91. Bearing seat; 92. Mounting hole; 93. Screw; 94. Nut; 95. Ring; 96. Ring groove; 97. Dustproof casing; 10. Central shaft; 101. Right threaded hole; 11. Right pin; 12. Slot; 13. Inclined ramp; 14. Interception groove. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Reference Figure 1-4 As an embodiment of this utility model, an overload protection device for a single-cylinder cone crusher is disclosed, including a single-cylinder cone crusher 1 and a motor 2. The motor 2 is used to drive the transmission shaft 3 of the single-cylinder cone crusher 1. A spring 4 and a sleeve 5 located to the right of the spring 4 are sleeved on the outer wall of the transmission shaft 3. A blocking component 6 is provided at the left end of the spring 4. A sliding groove 7 is opened laterally on the outer wall of the sleeve 5. A left pin 8 is fixedly installed on the outer wall of the transmission shaft 3. The left pin 8 is slidably disposed in the sliding groove 7. For those skilled in the art, how the transmission shaft 3 is installed in the single-cylinder cone crusher 1 and how it drives the crushing mechanism in the single-cylinder cone crusher 1 to crush materials are existing technologies, and will not be described in detail here. The right end of the sleeve 5 is connected to the central shaft 10 via the mounting assembly 9. The right end of the central shaft 10 is fixedly connected to the output shaft 21 of the motor 2. A right pin 11 is fixedly installed on the outer wall of the central shaft 10. The right end of the sleeve 5 is provided with a groove 12 that matches the right pin 11. The rear side of the groove 12 is provided with a ramp 13 to facilitate the right pin 11 to disengage from the groove 12. Preferably, the right end of the central shaft 10 is fixedly connected to the output shaft 21 via a coupling. The spring 4 applies a rightward thrust to the sleeve 5, preventing the right pin 11 from moving to the right relative to the slot 12, thus preventing the right pin 11 from sliding off the slot 12 along the slope 13 during rotation. The output shaft 21 of the motor 2 drives the central shaft 10 and the right pin 11 located in the slot 12 to rotate, thereby driving the sleeve 5 to rotate through the cooperation of the slot 12 and the right pin 11. This, in turn, drives the transmission shaft 3 to rotate through the slide 7 and the left pin 8, so that the transmission shaft 3 drives the crushing mechanism in the single-cylinder cone crusher 1 to crush the material. When the crushing mechanism inside the single-cylinder cone crusher 1 stops working due to overload, causing the drive shaft 3 to stop rotating, the sleeve 5 also stops rotating synchronously. The torque transmitted from the output shaft 21 to the drive shaft 3 through the central shaft 10, right pin 11, sleeve 5, and left pin 8 increases. At the same time, the increased torque transmitted from the right pin 11 to the sleeve 5 overcomes the resistance of the ramp 13 generated by the rightward thrust of the spring 4 on the sleeve 5, causing the right pin 11 to rotate and squeeze the ramp 13, thus causing the sleeve 5 to move to the left and compress. When the right pin 11 rotates along the ramp 13 to the right end face of the sleeve 5, the sleeve 5 moves to the leftmost end, causing the left pin 8 to be aligned with the rightmost end of the slide groove 7. This disconnects the transmission between the right pin 11 and the sleeve 5, allowing the motor 2 to drive the central shaft 10 to idle. This prevents the transmission shaft 3 from stopping abruptly due to overload. The output shaft 21 of the motor 2 continues to apply torque to the transmission shaft 3, causing the transmission shaft 3 to deform and break. This also prevents the transmission shaft 3 from continuing to drive the crushing mechanism and causing damage to the crushing mechanism.

[0018] It should be noted that the outer wall of the sleeve 5 is longitudinally provided with an intercepting groove 14. The rear end of the intercepting groove 14 is connected to and perpendicular to the slide groove 7. When the left pin 8 is at the rightmost end of the slide groove 7, the left pin 8 is aligned with the rear end of the intercepting groove 14. The right pin 11 drives the sleeve 5 to rotate through the friction between the right pin 11 and the sleeve 5, causing the left pin 8 to enter the intercepting groove 14. The intercepting groove 14 cooperates with the left pin 8 to prevent the sleeve 5 from moving to the right under the action of the spring 4, thereby preventing the right pin 11 from re-entering the slot 12 when the central shaft 10 rotates freely.

[0019] In some embodiments, the blocking assembly 6 includes a hexagonal nut 61 threaded onto the drive shaft 3. The right end face of the hexagonal nut 61 abuts against the spring 4. The hexagonal nut 61 compresses the left end of the spring 4, clamping it between the hexagonal nut 61 and the sleeve 5 in a compressed state, thereby giving it a rightward thrust on the sleeve 5. At the same time, the compression length of the spring 4 can be adjusted by rotating the hexagonal nut 61 to move it left and right, thereby adjusting the thrust on the sleeve 5 to adapt to different limit torques of different drive shafts 3.

[0020] Furthermore, the mounting assembly 9 includes a bearing seat 91 mounted on the outside of the central shaft 10. The left end face of the bearing seat 91 has four mounting holes 92, and screws 93 are inserted into the mounting holes 92. The outer wall of the right end of each of the four screws 93 is threaded with a pair of nuts 94 located on both sides of the bearing seat 91. The left end of the four screws 93 is threaded with a ring 95, and the left end of the ring 95 is fixedly connected to the single-cylinder cone crusher 1. Preferably, the ring 95 is integrally formed on the end face of the single-cylinder cone crusher 1 used for mounting the drive shaft 3. During installation, first screw the four screws 93 into the threaded holes on the right end face of the ring 95. Then, align the mounting holes 92 on the bearing housing 91 with the central shaft 10 and the four screws 93, and move them to the left so that the screws 93 are inserted into the mounting holes 92 and the central shaft 10 is inserted into the sleeve 5 and the right pin 11 is inserted into the slot 12. Then, turn the nut 94 on the left side of the bearing housing 91 on the screw 93 clockwise, put the nut 94 on the right end of the screw 93 and turn it counterclockwise, thereby clamping and fixing the bearing housing 91. The bearing housing 91 limits and stabilizes the central shaft 10, preventing the central shaft 10 from shaking and making the transmission more stable.

[0021] Furthermore, the left end of the ring 95 is provided with an annular groove 96, and the interior of the annular groove 96 is threaded with a dustproof cylinder 97. The right end of the dustproof cylinder 97 is sleeved on the outer wall of the bearing seat 91. The dustproof cylinder 97 prevents dust generated by material crushing from entering the interior of the dustproof cylinder 97 and contaminating the sleeve 5, left pin 8 and right pin 11. At the same time, when the transmission needs to be restored after the overload is resolved, the dustproof cylinder 97 is rotated to the right to disengage from the ring 95, and the dustproof cylinder 97 is moved to the right. The sleeve 5 is reversed, so that the left pin 8 re-enters the slide groove 7. At this time, the sleeve 5 is pushed to the right by the spring 4, so that the right pin 11 re-enters the retaining groove 12.

[0022] For example, the sleeve 5 includes two arc plates 51 with semi-circular cross sections. Connecting plates 52 are integrally formed on the front and rear sides of the two arc plates 51. Several insertion holes are opened on the top of the connecting plates 52 on both sides of the upper arc plate 51, and screws 53 are inserted into the insertion holes. The lower end of the screws 53 is threaded to the connecting plates 52 located on both sides of the lower arc plate 51. By dividing the sleeve 5 into two arc-shaped plates 51, the two arc-shaped plates 51 can be replaced by unscrewing the screws 53 when the sleeve 5 is damaged, without disassembling other parts such as the bearing seat 91, making replacement more convenient.

[0023] Specifically, a right threaded hole 101 is provided on the outer wall of the central shaft 10, and a right pin 11 is threadedly connected inside the right threaded hole 101. A left threaded hole 31 is provided on the outer wall of the transmission shaft 3, and a left pin 8 is threadedly connected inside the left threaded hole 31. When the left pin 8 and right pin 11 fail, the faulty left pin 8 and right pin 11 can be unscrewed and the new left pin 8 and right pin 11 can be screwed back into the left threaded hole 31 and right threaded hole 101.

[0024] Working method: During operation, the output shaft 21 of the motor 2 drives the central shaft 10 and the right pin 11 located in the slot 12 to rotate. The slot 12 and the right pin 11 work together to drive the sleeve 5 to rotate. The sliding groove 7 and the left pin 8 drive the transmission shaft 3 to rotate, so that the transmission shaft 3 drives the crushing mechanism in the single-cylinder cone crusher 1 to crush the material. When overloaded, and when the drive shaft 3 stops rotating, the sleeve 5 stops rotating synchronously. The torque transmitted from the output shaft 21 to the drive shaft 3 through the central shaft 10, right pin 11, sleeve 5, and left pin 8 increases. At the same time, the torque transmitted from the right pin 11 to the sleeve 5 increases and overcomes the resistance of the ramp 13 generated by the spring 4 pushing the sleeve 5 to the right, causing the right pin 11 to rotate and squeeze the ramp 13, causing the sleeve 5 to move to the left and compress the spring 4. When the right pin 11 rotates along the ramp 13 to the right end face of the sleeve 5, the sleeve 5 moves to the leftmost end, causing the left pin 8 to reach the rightmost end of the slide groove 7, thereby cutting off the transmission between the right pin 11 and the sleeve 5, causing the motor 2 to drive the central shaft 10 to rotate freely. At the same time, when the left pin 8 reaches the rightmost end of the slide groove 7, the left pin 8 is aligned with the rear end of the intercepting groove 14. The right pin 11 drives the sleeve 5 to rotate through the friction between the right pin 11 and the sleeve 5, causing the left pin 8 to enter the intercepting groove 14.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An overload protection device for a single-cylinder cone crusher, comprising a single-cylinder cone crusher (1) and a motor (2), wherein the motor (2) is used to drive the transmission shaft (3) of the single-cylinder cone crusher (1), characterized in that: A spring (4) and a sleeve (5) located to the right of the spring (4) are sleeved on the outer wall of the drive shaft (3). A blocking component (6) is provided at the left end of the spring (4). A sliding groove (7) is opened laterally on the outer wall of the sleeve (5). A left pin (8) is fixedly installed on the outer wall of the drive shaft (3). The left pin (8) is slidably disposed in the sliding groove (7). The right end of the sleeve (5) is connected to a central shaft (10) via an installation component (9). The right end of the central shaft (10) is fixedly connected to the output shaft (21) of the motor (2). A right pin (11) is fixedly installed on the outer wall of the central shaft (10). The right end of the sleeve (5) is provided with a slot (12) that matches the right pin (11). The rear side of the slot (12) is provided with a ramp (13) that facilitates the right pin (11) to disengage from the slot (12).

2. The overload protection device for a single-cylinder cone crusher according to claim 1, characterized in that: The outer wall of the sleeve (5) is longitudinally provided with an interception groove (14), and the rear end of the interception groove (14) is connected to and perpendicular to the slide groove (7).

3. The overload protection device for a single-cylinder cone crusher according to claim 1, characterized in that: The blocking assembly (6) includes a hexagonal nut (61) threaded onto the drive shaft (3), with the right end face of the hexagonal nut (61) abutting against a spring (4).

4. The overload protection device for a single-cylinder cone crusher according to claim 1, characterized in that: The mounting assembly (9) includes a bearing seat (91) mounted outside the central shaft (10). The left end face of the bearing seat (91) has four mounting holes (92), and screws (93) are inserted into the mounting holes (92). The right end outer wall of each of the four screws (93) is threaded with a pair of nuts (94) located on both sides of the bearing seat (91). The left end of the four screws (93) is threaded with a ring (95), and the left end of the ring (95) is fixedly connected to a single-cylinder cone crusher (1).

5. The overload protection device for a single-cylinder cone crusher according to claim 4, characterized in that: The left end of the ring (95) is provided with a ring groove (96), and the inside of the ring groove (96) is threaded with a dustproof cylinder (97). The right end of the dustproof cylinder (97) is sleeved on the outer wall of the bearing seat (91).

6. The overload protection device for a single-cylinder cone crusher according to claim 1, characterized in that: The sleeve (5) includes two arc plates (51) with semi-circular cross sections. Both front and rear sides of the two arc plates (51) are integrally formed with connecting plates (52). The top of the connecting plates (52) on both sides of the upper arc plate (51) is provided with several insertion holes, and screws (53) are inserted into the insertion holes. The lower end of the screws (53) is threaded to the connecting plates (52) located on both sides of the lower arc plate (51).

7. An overload protection device for a single-cylinder cone crusher according to claim 1, characterized in that: The outer wall of the central shaft (10) is provided with a right threaded hole (101), and the inner thread of the right threaded hole (101) is connected to a right pin (11). The outer wall of the transmission shaft (3) is provided with a left threaded hole (31), and the inner thread of the left threaded hole (31) is connected to a left pin (8).

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