Anti-reverse rotation device of the cone crusher main unit

Abstract

The present invention relates to the technical field of cone crushing equipment, and more specifically to a device for preventing reverse rotation of the moving cone of a cone crushing mainframe. The device comprises a universal connection mechanism and a one-way rotation limiter. The one-way rotation limiter is located at the bottom of the mainframe frame and is connected to the top of the moving cone via the universal connection mechanism. The one-way rotation limiter is used to restrict the moving cone from rotating in a direction opposite to the direction of the eccentric mechanism. The present invention facilitates maintenance of the one-way rotation limiter. Even if the one-way rotation limiter fails, no broken parts will fall into the interior of the cone crushing mainframe and be crushed by the bearings, effectively protecting the bearings within the cone crushing mainframe from damage.

Description

Technical Field

[0001] The present invention relates to the technical field of cone crushing equipment, in particular to a device for preventing reverse rotation of a moving cone of a cone crushing main machine. Background Art

[0002] When the cone crusher is started without load, when the eccentric mechanism rotates around the vertical axis, the friction between the moving cone and the eccentric mechanism is sufficient to make the eccentric mechanism drag the moving cone to rotate in the same direction. However, when the raw materials are put into the crushing chamber, the following problems will occur: 1. Because the friction torque of the material on the cone surface of the moving cone is much greater than the friction torque generated by the eccentric mechanism on the moving cone, the moving cone is suddenly braked and rotated in the opposite direction. This sudden braking to the opposite direction of rotation will cause severe wear on the surface of the crushing liner; 2. Due to the uncertainty of the swing direction of the moving cone, the material is prone to slip, affecting the crushing effect; 3. Due to some special reasons, the moving cone suddenly accelerates in the direction of rotation of the eccentric mechanism, causing the moving cone to lose stability, resulting in a "flying car" phenomenon, which makes the machine body vibrate violently instantly, the working current increases instantly, and the return oil temperature rises sharply, damaging the equipment and affecting normal operation.

[0003] To address this issue, a utility model patent with authorization publication number CN209188864U provides a cone crusher and a dynamic cone anti-reverse rotation device. This utility model patent addresses the issue of a cone crusher and a dynamic cone anti-reverse rotation device. During actual crushing operations, it was discovered that the one-way clutch, located at the top of the dynamic cone, was inconvenient to access and repair. Furthermore, overload could easily cause the one-way clutch bolts to break, leading to failure. These broken bolts could fall into the cone crusher's mainframe, where they would be crushed by the internal bearings and damage them. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a device for preventing the movable cone of the cone crusher from reverse rotation, which is convenient for maintenance of the one-way rotation limiter and prevents broken parts from falling into the interior of the cone crusher and being crushed by the bearings even if the one-way rotation limiter fails, thereby effectively ensuring that the bearings inside the cone crusher are not damaged.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: the anti-reverse rotation device of the movable cone of the cone crusher main unit includes a universal connection mechanism and a one-way rotation limiter. The one-way rotation limiter is arranged at the bottom end of the main unit frame and is connected to the top end of the movable cone through the universal connection mechanism. The one-way rotation limiter is used to limit the movable cone to rotate only in the direction opposite to the rotation direction of the eccentric mechanism.

[0006] Furthermore, a cone head sealing body is provided between the universal connection mechanism and the moving cone, a circular embedding hole is provided at the top of the moving cone, and a circular ring-shaped insert adapted to the circular embedding hole is fixed at the bottom of the cone head sealing body, and the circular ring-shaped insert is threadedly connected to the circular embedding hole.

[0007] Furthermore, the universal connection mechanism includes a cross universal joint, an anti-torsion bar and a connecting assembly. The cross universal joint is arranged above the moving cone. The top end of the cross universal joint is fixedly connected to the top end of the cone head sealing body through the connecting assembly. The bottom end of the cross universal joint is fixedly connected to the top end of the anti-torsion bar through the lower mounting seat. The bottom end of the anti-torsion bar extends downward and passes through the first inner cavity of the cone head sealing body, the second inner cavity of the oil guide pipe and the third inner cavity of the main shaft in sequence and is fixedly connected to the one-way rotation limiter through the mounting sleeve.

[0008] Furthermore, the connecting assembly includes an upper mounting seat and a connecting seat. The upper mounting seat is disc-shaped and fixedly connected to the top of the cross universal joint. The upper mounting seat is fixedly installed on the top of the connecting seat. The bottom end of the connecting seat is fixedly connected to the top of the cone head sealing body. The connecting seat is cylindrical and has a accommodating cavity formed therein for accommodating the cross universal joint.

[0009] Furthermore, a support sleeve sleeved on the anti-torsion rod is fixedly installed on the top of the third inner cavity of the main shaft. The support sleeve is adapted to the anti-torsion rod and the two are rotationally matched.

[0010] Furthermore, the one-way rotation limiter is fixedly mounted on the bottom end of the main frame via a one-way rotation mounting base, and the one-way rotation mounting base is provided with a through hole through which the mounting sleeve can pass.

[0011] Furthermore, the one-way rotation limiter is an overrunning clutch motor, which is connected to a one-way rotation hydraulic control system. The one-way rotation hydraulic control system includes an oil inlet circuit and an oil return circuit. One end of the oil inlet circuit is connected to the oil supply mechanism, and the other end of the oil inlet circuit is connected to the first oil port of the overrunning clutch motor. A pressure reducing valve and a first one-way valve are sequentially provided on the oil inlet circuit along the oil inlet direction. One end of the oil return circuit is connected to the second oil port of the overrunning clutch motor, and the other end of the oil return circuit is connected to the oil inlet circuit between the pressure reducing valve and the first one-way valve.

[0012] Furthermore, the one-way rotation hydraulic control system also includes a first overflow oil circuit, one end of the first overflow oil circuit is connected to the first oil port of the overrunning clutch motor, an overflow valve is provided on the first overflow oil circuit, and the other end of the first overflow oil circuit is connected to the oil inlet circuit between the pressure reducing valve and the first one-way valve.

[0013] Furthermore, the one-way rotation hydraulic control system also includes a second overflow oil circuit, one end of the second overflow oil circuit is connected to the overflow oil port of the overrunning clutch motor, a second one-way valve is provided on the second overflow oil circuit, and the other end of the second overflow oil circuit is connected to the oil tank.

[0014] Furthermore, the one-way rotation limiter is a one-way clutch.

[0015] From the above description, it can be seen that the anti-reverse rotation device of the movable cone of the cone crusher main unit provided by the present invention has the following beneficial effects: the one-way rotation limiter is connected to the movable cone through a universal connection mechanism, so that during the operation of the cone crusher main unit, the movable cone can drive the one-way rotation limiter to rotate passively through the transmission of the universal connection mechanism, and the one-way rotation limiting effect of the one-way rotation limiter makes the movable cone only rotate in the opposite direction of the rotation direction of the eccentric mechanism; by arranging the one-way rotation limiter at the bottom end of the main unit frame, when the one-way rotation limiter has problems during use, the one-way rotation limiter can be easily repaired. In addition, even if the one-way rotation limiter fails due to overload of the cone crusher main unit, no broken parts on the one-way rotation limiter will fall into the interior of the cone crusher main unit and be crushed by the bearings, which effectively ensures that the bearings inside the cone crusher main unit are not damaged, which is beneficial to reducing the maintenance cost of subsequent equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the anti-reverse rotation device of the cone crusher main unit of the present invention.

[0017] Figure 2 for Figure 1 A local enlarged schematic diagram of point A in the middle.

[0018] Figure 3 for Figure 1 A partial enlarged schematic diagram of point B in the middle.

[0019] Figure 4 for Figure 1 A partial enlarged schematic diagram of point C in the middle.

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the cone head seal.

[0021] Figure 6 Schematic diagram of the structure of the moving cone.

[0022] Figure 7 This is a schematic diagram of the hydraulic control principle of the overrunning clutch motor in the first embodiment of the present invention.

[0023] In the figure: 1-universal connection mechanism; 11-cross universal joint; 12-anti-twist bar; 13-connecting assembly; 131-upper mounting seat; 132-connecting seat; 1321-accommodating chamber; 2-one-way rotation limiter; 31-oil inlet line; 32-oil return line; 33-first overflow line; 34-second overflow line; 35-pressure reducing valve; 36-overflow valve; 37-first one-way valve; 38-second one-way valve ;391-first oil port;392-second oil port;393-overflow oil port;4-lower mounting seat;51-moving cone;511-circular embedded hole;52-oil guide pipe;521-second inner cavity;53-main shaft;531-third inner cavity;54-main machine frame;55-cone head sealing body;551-first inner cavity;552-circular embedded block;6-support sleeve;7-mounting sleeve;8-one-way rotating mounting seat. DETAILED DESCRIPTION

[0024] The present invention is further described below through specific embodiments.

[0025] Example 1

[0026] like Figures 1 to 7 As shown, the anti-reverse rotation device of the cone crusher main unit described in the present invention includes a universal connection mechanism 1 and a one-way rotation limiter 2. The one-way rotation limiter 2 is arranged at the bottom end of the main unit frame 54 and is connected to the top end of the movable cone 51 through the universal connection mechanism 1. The one-way rotation limiter 2 is used to limit the movable cone 51 to rotate only in the direction opposite to the rotation direction of the eccentric mechanism.

[0027] The one-way rotation limiter 2 is connected to the movable cone 51 through the universal connection mechanism 1. Therefore, during the operation of the cone crusher main unit, the movable cone 51 can drive the one-way rotation limiter 2 to rotate passively through the transmission of the universal connection mechanism 1, and the one-way rotation limiting effect of the one-way rotation limiter 2 makes the movable cone 51 only able to rotate in the opposite direction of the swing direction of the eccentric mechanism; by arranging the one-way rotation limiter 2 at the bottom end of the main unit frame 54, when the one-way rotation limiter 2 has problems during use, the one-way rotation limiter 2 can be conveniently repaired; in addition, even if the one-way rotation limiter 2 fails due to overload of the cone crusher main unit, no broken parts on the one-way rotation limiter 2 will fall into the interior of the cone crusher main unit and be crushed by the bearings, effectively ensuring that the internal bearings of the cone crusher main unit are not damaged, which is conducive to reducing the maintenance cost of subsequent equipment.

[0028] A cone head seal 55 is provided between the universal connection mechanism 1 and the moving cone 51. A circular embedding hole 511 is provided at the top of the moving cone 51. A circular ring-shaped insert 552 that is adapted to the circular embedding hole 511 is fixedly provided at the bottom end of the cone head seal 55. The circular ring-shaped insert 552 is threadedly connected to the circular embedding hole 511. Accordingly, a first external thread is provided on the outer circumferential surface of the circular ring-shaped insert 552, and a first internal thread that is adapted to the first external thread is provided on the inner surface of the circular embedding hole 511 of the moving cone head, thereby facilitating the threaded connection between the cone head seal 55 and the moving cone 51 as a whole.

[0029] Specifically, the universal connection mechanism 1 includes a cross universal joint 11, an anti-twist bar 12 and a connecting assembly 13. The cross universal joint 11 is arranged above the dynamic cone 51, and the top of the cross universal joint 11 is fixedly connected to the top of the cone head sealing body 55 through the connecting assembly 13. The bottom end of the cross universal joint 11 is fixedly connected to the top of the anti-twist bar 12 through the lower mounting seat 4. The bottom end of the anti-twist bar 12 extends downward and passes through the first inner cavity 551 of the cone head sealing body 55, the second inner cavity 521 of the oil guide pipe 52 and the third inner cavity 531 of the main shaft 53 in sequence and is fixedly connected to the one-way rotation limiter 2 through the mounting sleeve 7. Since the central axis of the dynamic cone 51 is inconsistent with the central axis of the main shaft 53 and there is an angle between them, through the arrangement of the cross universal joint 11, and in conjunction with the anti-twist bar 12, the connecting assembly The connection between the component 13 and the cone head seal 55 facilitates the transmission connection between the moving cone 51 and the one-way rotation limiter 2. In addition, the intersection of the central axis of the moving cone 51 and the central axis of the main shaft 53, that is, the suspension point, is above the moving cone 51. Since the swing amplitude of the cross universal joint 11 itself is also limited, by arranging the cross universal joint 11 above the moving cone 51, the cross universal joint 11 can be made closer to the suspension point. In this way, during the entire crushing process of the cone crusher main unit, the swing amplitude of the cross universal joint 11 is also relatively small, which can better ensure the normal use of the cross universal joint 11. In addition, through the arrangement of the cone head seal 55, the smooth installation of the cross universal joint 11 above the moving cone 51 can also be better facilitated.

[0030] In addition, the lower mounting seat 4 and the upper end of the anti-twist bar 12 are connected by a flat key or a spline, and the mounting sleeve 7 and the lower end of the anti-twist bar 12 are connected by a spline or a flat key.

[0031] The connecting assembly 13 includes an upper mounting seat 131 and a connecting seat 132. The upper mounting seat 131 is disc-shaped and fixedly connected to the top of the cross universal joint 11. The upper mounting seat 131 is fixedly mounted on the top of the connecting seat 132. The bottom end of the connecting seat 132 is fixedly connected to the top of the cone head seal 55. The connecting seat 132 is cylindrical and has a accommodating cavity 1321 formed therein for accommodating the cross universal joint 11. In this way, it is easy to achieve a stable connection between the top of the cross universal joint 11 and the top of the cone head seal 55, and the cross universal joint 11 can also be well protected in the accommodating cavity 1321.

[0032] A support sleeve 6 mounted on the anti-torsion bar 12 is fixedly installed on the top of the third inner cavity 531 of the main shaft 53. The support sleeve 6 is adapted to the anti-torsion bar 12 and the two are rotated together, thereby facilitating the corresponding lateral support of the upper part of the anti-torsion bar 12 to further ensure the stability of the anti-torsion bar 12 during rotation.

[0033] The one-way rotation limiter 2 is fixedly mounted on the bottom end of the main frame 54 via a one-way rotation mounting seat 8 . The one-way rotation mounting seat 8 is provided with a through hole for the mounting sleeve 7 to pass through.

[0034] Correspondingly, a lubricating oil inlet is provided on the outside of the one-way rotating mounting seat 8, and a skeleton oil seal is provided between the mounting sleeve 7 and the one-way rotating mounting seat 8 to ensure the sealing performance when the two are rotating together. A lubricating oil cavity is formed between the one-way rotating mounting seat 8 and the main shaft 53 and the main machine frame 54. A first lubricating channel is formed between the outer surface of the anti-torsion bar 12 and the inner surface of the main shaft 53. A plurality of lubricating holes are provided on the support sleeve 6. A second lubricating channel is formed between the outer surface of the anti-torsion bar 12 and the inner surface of the oil guide pipe 52. The lubricating oil inlet, the lubricating oil cavity, the first lubricating channel, the lubricating hole and the second lubricating channel are connected in sequence, thereby facilitating the lubricating oil to be filled into the cone crusher main machine to lubricate its internal bearings.

[0035] The one-way rotation limiter 2 is an overrunning clutch motor, and the overrunning clutch motor can be a product already sold on the market. In this embodiment, the mounting sleeve 7 is fixedly installed on the front plate of the overrunning clutch motor, and the overrunning clutch motor is connected to the one-way rotation hydraulic control system. The one-way rotation hydraulic control system is used to limit the overrunning clutch motor to only one-way rotation. The one-way rotation hydraulic control system includes an oil inlet circuit 31 and an oil return circuit 32. One end of the oil inlet circuit 31 is connected to the oil supply mechanism, and the other end of the oil inlet circuit 31 is connected to the first oil port 391 of the overrunning clutch motor. A pressure reducing valve 35 and a first one-way valve 37 are sequentially provided on the oil inlet circuit 31 along the oil inlet direction. One end of the oil return circuit 32 is connected to the second oil port 392 of the overrunning clutch motor, and the other end of the oil return circuit 32 is connected to the oil inlet circuit 31 between the pressure reducing valve 35 and the first one-way valve 37. are connected, thereby, through the setting of the oil inlet oil circuit 31, it is convenient to fill oil into the overrunning clutch motor to form a damping effect similar to that of a spring. At the same time, in conjunction with the setting of the first one-way valve 37, when the cone crusher main unit is running without load, the first one-way valve 37 can play a role in the corresponding locking direction. At this time, the hydraulic oil cannot flow from the first oil port 391 through the first one-way valve 37 to the second oil port 392, so as to effectively prevent the movable cone 51 from swinging in the same direction as the swing direction of the eccentric mechanism. When the cone crusher main unit is running with load, the hydraulic oil can flow from the second oil port 392 through the first one-way valve 37 to the first oil port 391, thereby allowing the movable cone 51 to swing in the opposite direction of the swing direction of the eccentric mechanism. In addition, through the setting of the pressure reducing valve 35, it can play a role in regulating the oil inlet pressure. Preferably, the pressure reducing pressure of the pressure reducing valve 35 is set to 13-17 Bar.

[0036] Correspondingly, the oil supply mechanism includes a hydraulic pump, which is connected to the engine or motor to drive the hydraulic pump to work. The oil inlet of the hydraulic pump is connected to the oil tank, and the oil outlet of the hydraulic pump is connected to one end of the oil inlet circuit 31.

[0037] The one-way rotation hydraulic control system also includes a first overflow oil circuit 33, one end of the first overflow oil circuit 33 is connected to the first oil port 391 of the overrunning clutch motor, and an overflow valve 36 is provided on the first overflow oil circuit 33. The other end of the first overflow oil circuit 33 is connected to the oil inlet circuit 31 between the pressure reducing valve 35 and the first one-way valve 37. In this way, when the cone crusher main unit is overloaded during the crushing process, the overflow valve 36 can play a corresponding overflow role, thereby releasing the overload to avoid damage to the overrunning clutch motor, thereby better ensuring the long-term stable operation of the cone crusher main unit. Preferably, the overflow pressure of the overflow valve 36 is set to 360-400 Bar.

[0038] The one-way rotation hydraulic control system also includes a second overflow oil circuit 34, one end of the second overflow oil circuit 34 is connected to the overflow oil port 393 of the overrunning clutch motor, a second one-way valve 38 is provided on the second overflow oil circuit 34, and the other end of the second overflow oil circuit 34 is connected to the oil tank, thereby facilitating the return of some overflow hydraulic oil generated inside the overrunning clutch motor to the oil tank.

[0039] Example 2

[0040] The difference between this embodiment and the first embodiment is that the one-way rotation limiter 2 is a one-way clutch. Accordingly, the one-way clutch can adopt the structure in the prior art, so it will not be described in detail here.

[0041] Other technical features are the same as those in Example 1.

[0042] The above are only some specific implementation methods of the present invention, but the design concept of the present invention is not limited to this. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. The anti-reverse rotation device of the cone crusher main unit is characterized by: It includes a universal connection mechanism and a one-way rotation limiter, the one-way rotation limiter is arranged at the bottom end of the main frame and is connected to the top end of the moving cone through the universal connection mechanism, the one-way rotation limiter is used to limit the moving cone to only rotate in the opposite direction of the eccentric mechanism, the one-way rotation limiter is an overrunning clutch motor, the overrunning clutch motor is connected to the one-way rotation hydraulic control system, the one-way rotation hydraulic control system includes an oil inlet circuit and an oil return circuit, one end of the oil inlet circuit is connected to the oil supply mechanism, the other end of the oil inlet circuit is connected to the first oil port of the overrunning clutch motor, a pressure reducing valve and a first one-way valve are sequentially provided on the oil inlet circuit along the oil inlet direction, one end of the oil return circuit is connected to the overrunning clutch motor The one-way rotation hydraulic control system further comprises a first overflow oil circuit, one end of the first overflow oil circuit is connected to the first oil port of the overrunning clutch motor, an overflow valve is provided on the first overflow oil circuit, the other end of the first overflow oil circuit is connected to the oil inlet circuit between the pressure reducing valve and the first one-way valve, the one-way rotation hydraulic control system further comprises a second overflow oil circuit, one end of the second overflow oil circuit is connected to the overflow oil port of the overrunning clutch motor, a second one-way valve is provided on the second overflow oil circuit, and the other end of the second overflow oil circuit is connected to the oil tank.

2. The anti-reverse rotation device for the cone crusher according to claim 1 is characterized in that: A cone head sealing body is provided between the universal connection mechanism and the moving cone, a circular embedding hole is provided at the top of the moving cone, and a circular ring-shaped insert adapted to the circular embedding hole is fixed at the bottom end of the cone head sealing body, and the circular ring-shaped insert is threadedly connected to the circular embedding hole.

3. The anti-reverse rotation device for the cone crusher according to claim 2 is characterized in that: The universal connection mechanism includes a cross universal joint, an anti-torsion rod and a connecting assembly. The cross universal joint is arranged above the dynamic cone. The top end of the cross universal joint is fixedly connected to the top end of the cone head sealing body through the connecting assembly. The bottom end of the cross universal joint is fixedly connected to the top end of the anti-torsion rod through a lower mounting seat. The bottom end of the anti-torsion rod extends downward and passes through the first inner cavity of the cone head sealing body, the second inner cavity of the oil guide pipe and the third inner cavity of the main shaft in sequence, and is fixedly connected to the one-way rotation limiter through a mounting sleeve.

4. The anti-reverse rotation device for the movable cone of the cone crusher main unit according to claim 3 is characterized in that: The connecting assembly includes an upper mounting seat and a connecting seat. The upper mounting seat is disc-shaped and fixedly connected to the top of the cross universal joint. The upper mounting seat is fixedly installed on the top of the connecting seat. The bottom end of the connecting seat is fixedly connected to the top of the cone head sealing body. The connecting seat is cylindrical and has an accommodating cavity formed therein for accommodating the cross universal joint.

5. The anti-reverse rotation device for the movable cone of the cone crusher main unit according to claim 3 is characterized in that: A support sleeve sleeved on the anti-twist bar is fixedly installed on the top of the third inner cavity of the main shaft. The support sleeve is adapted to the anti-twist bar and the two are rotationally matched.

6. The anti-reverse rotation device for the movable cone of the cone crusher main unit according to claim 3 is characterized in that: The one-way rotation limiter is fixedly mounted on the bottom end of the main frame via a one-way rotation mounting seat, and the one-way rotation mounting seat is provided with a through hole through which the mounting sleeve can pass.

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