Rotor structure of scrap metal crusher

Abstract

The utility model discloses a rotor structure of a scrap metal crusher. The rotor structure comprises a base, the rotor mechanism comprises a main shaft, a pin shaft, protective covers and hammer heads, the main shaft extends in the axial direction, a plurality of shaft holes are formed in the main shaft in the axial direction at equal intervals, the pin shaft penetrates through the shaft holes, and the pin shaft is sleeved with the protective covers and the hammer heads; the rotating speed detection mechanism is arranged on the outer side of the first side wall, the rotating speed detection mechanism comprises a proximity sensor and a rotary support, and the rotating speed detection mechanism can monitor the rotating speed of the main shaft in real time. By means of the structure, the rotating speed of the main shaft can be monitored in real time, the structure is simple, and maintenance is convenient.

Description

Technical Field

[0001] The utility model relates to a rotor structure of a scrap metal crusher and belongs to the technical field of metal crushers. Background Art

[0002] The description in this section merely provides background information related to the disclosure of the present utility model and does not constitute prior art.

[0003] Large scrap metal crusher is a new type of high-efficiency metal crusher. Its working principle is that under the continuous drive of a high-speed, high-torque motor, the hammers on the crusher rotor take turns hitting the scrap metal entering the cavity. Under the strong impact, the scrap steel is torn and squeezed into broken metal of a certain specification, and then processed by sorting equipment to obtain broken steel / aluminum / copper and other metals with higher purity.

[0004] In the process of crushing metal, the rotor, as the core crushing component of the crusher, is in direct contact with the scrap metal. It has a large torque and strong structural strength, and can shear and crush the scrap metal fed from the outside into smaller pieces through multiple hammers. In other words, during the operation of the rotor, it is inevitable that there will be a large impact and friction between the rotor and the metal. Therefore, it is very important to detect the rotor speed during operation to adjust the rotor speed. However, it is generally difficult to monitor the rotor speed in existing crushers. At the same time, when there is a problem with the rotor, it is difficult to repair and maintain due to its complex structure.

[0005] There is no scrap metal crusher rotor structure that can solve the above problems at present. Utility Model Content

[0006] The utility model aims to provide a scrap metal crusher rotor structure, which can monitor the rotation speed of the main shaft in real time and has a simple structure and is easy to maintain.

[0007] In order to achieve the above-mentioned object, the utility model discloses the following scrap metal crusher rotor structure, which includes:

[0008] A base, the base comprising a first side wall and a second side wall arranged opposite to each other, and a group of bearing seats arranged opposite to each other between the outer sides of the first side wall and the second side wall;

[0009] A rotor mechanism, the rotor mechanism comprising a main shaft, a pin shaft, a protective cover and a hammer head, the main shaft extending in the axial direction, and at least a part of the main shaft passing through the two bearing seats, the main shaft having a plurality of axial holes arranged in an equidistant array around the axial direction, the pin shaft passing through the axial holes, the protective cover comprising a cover hole matching the pin shaft, the hammer head comprising a hammer hole matching the pin shaft, a plurality of the protective covers and the hammer heads being sleeved on the pin shaft, so that the protective covers and the hammer heads can rotate around the axial direction under the drive of the pin shaft;

[0010] A rotation speed detection mechanism, wherein the rotation speed detection mechanism is arranged on the outer side of the first side wall, and the rotation speed detection mechanism includes a proximity sensor and a rotating bracket, wherein the proximity sensor is fixed on the base, and the rotating bracket is fixed on one end of the main shaft extending out of the first side wall, so that the main shaft can drive the rotating bracket to rotate around the axial direction, and the sensing end of the proximity sensor is arranged toward the rotating bracket.

[0011] Furthermore, it also includes a slow-turning mechanism, which is arranged on the outer side of the second side wall, and includes a bracket, a slide rail, a worm, a first motor, a second motor and shaft teeth. The slide rail is fixed on the base, and the bracket is slidably arranged on the slide rail. The worm extends parallel to the slide rail and is fixed on the bracket, and the gear of the first motor is meshed with the worm, the second motor is fixed on the bracket, and the shaft teeth are sleeved on the output shaft of the main motor. The output shaft of the main motor is transmission-connected to one end of the main shaft through a universal joint, and the gear of the second motor is matched with the shaft teeth, so that the worm can drive the gear of the second motor to engage or disengage with the shaft teeth in a controllable manner under the drive of the first motor.

[0012] Furthermore, the slide rail extends perpendicular to the axial direction and is arranged at a bottom edge of the second side wall.

[0013] Furthermore, the hammer heads are arranged at intervals on the pin shaft through the protective cover so that every two hammer heads are not adjacent to each other.

[0014] Furthermore, each of the rotor mechanisms includes a total of six pins.

[0015] Furthermore, the proximity sensor is electrically connected to a PLC system, so that when the slewing bracket rotates, the PLC can receive a pulse signal from the proximity sensor.

[0016] By means of the above technical solution, the beneficial effects of the utility model are as follows:

[0017] 1. The rotor structure of the scrap metal crusher of the utility model can realize rapid replacement of the hammer head sleeved on the pin shaft by quickly disassembling the pin shaft in the rotor mechanism, and has better maintainability.

[0018] 2. The speed detection mechanism of the rotor structure of the scrap metal crusher of the utility model has a simple structure and low cost, and does not affect the structural design of the main body. The rotation speed of the main shaft can be changed through the rotating bracket, so that the proximity sensor can collect pulse signals of different rhythms, thereby intuitively realizing real-time monitoring of the rotation state of the main shaft.

[0019] 3. The slow rotation mechanism of the rotor structure of the scrap metal crusher of the utility model drives the output shaft of the main motor to indirectly realize the slow rotation control of the main shaft. The rotor structure can be rotated in the main engine maintenance mode to improve the maintenance efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is a schematic diagram of a rotor mechanism of a scrap metal crusher rotor structure provided in an embodiment of this specification;

[0022] Figure 2 It is a schematic diagram of a speed detection mechanism of a rotor structure of a scrap metal crusher provided in an embodiment of this specification;

[0023] Figure 3 This is a schematic diagram of a non-intervention state of a slow-rotation mechanism of a scrap metal crusher rotor structure provided by an embodiment of this specification;

[0024] Figure 4 This is a schematic diagram of the slow-rotation mechanism intervention state of a scrap metal crusher rotor structure provided by an embodiment of this specification;

[0025] Figure 5 It is a schematic diagram of a hammer head of a scrap metal crusher rotor structure provided in an embodiment of this specification;

[0026] In the figure: 1. base; 11. first side wall; 12. second side wall; 13. bearing seat; 2. rotor mechanism; 21. main shaft; 211. shaft hole; 22. pin shaft; 23. protective cover; 24. hammer head; 3. speed detection mechanism; 31. proximity sensor; 32. slewing bracket; 4. slow-turning mechanism; 41. bracket; 42. slide rail; 43. worm; 44. first motor; 45. second motor; 46. shaft gear; 47. output shaft of main motor. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this specification.

[0028] In the description of the present utility model, it should be noted that the terms "upper", "middle", "lower", "inner", "outer", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. The terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The following describes the implementation method of the present utility model based on its overall structure.

[0029] See also Figure 1-4 , is a scrap metal crusher rotor structure of this embodiment, which includes:

[0030] A base 1, the base 1 comprises a first side wall 11 and a second side wall 12 which are arranged opposite to each other, and a group of bearing seats 13 which are arranged opposite to each other are arranged between the outer sides of the first side wall 11 and the second side wall 12;

[0031] The rotor mechanism 2 includes a main shaft 21, a pin shaft 22, a protective cover 23 and a hammer head 24. The main shaft 21 extends in the axial direction, and at least a part of the main shaft 21 is arranged between two bearing seats 13. The main shaft 21 has a plurality of shaft holes 211 arranged in an equidistant array around the axial direction. The pin shaft 22 is arranged in the shaft hole 211. The protective cover 23 includes a cover hole matching the pin shaft 22. The hammer head 24 includes a hammer hole matching the pin shaft 22. The plurality of protective covers 23 and the hammer head 24 are sleeved on the pin shaft 22 so that the protective covers 23 and the hammer head 24 can rotate around the axial direction under the drive of the pin shaft 22.

[0032] The speed detection mechanism 3 is arranged on the outer side of the first side wall 11. The speed detection mechanism 3 includes a proximity sensor 31 and a rotating bracket 32. The proximity sensor 31 is fixed on the base 1. The rotating bracket 32 ​​is fixed to one end of the main shaft 21 extending out of the wall of the first side 11, so that the main shaft 21 can drive the rotating bracket 33 to rotate axially. The sensing end of the proximity sensor 31 is arranged toward the rotating bracket 32.

[0033] With the above structure, during the operation of the crusher of this embodiment, scrap metal is continuously fed into the external feed port, and at the same time, the external drive mechanism drives the main shaft 21 to start rotating. When the scrap metal approaches the hammer 24 outside the main shaft 21, the whole piece of scrap metal is torn and broken into smaller pieces of scrap metal fragments under the extrusion and impact of the hammer 24, and a large amount of crushed debris falls through the screen at the bottom of the base 1 by its own weight and is transmitted to the downstream mechanism. In the above process, due to the possibility of problems such as stuck foreign objects or abnormal driving mechanism, if the rotation speed of the main shaft 21 is unstable, it may cause the hammer 24 to transmit to the main shaft 21 and other mechanisms. Abnormal operation or even damage. In the present embodiment, the proximity sensor 31 in the speed detection mechanism 3 arranged on the side of the second side wall 12 can receive the spindle 21 speed signal transmitted by the rotating bracket 32 ​​in real time. Specifically, the rotating bracket 32 ​​is fixed on one side of the end of the spindle 21. When the spindle 21 rotates one circle, the rotating bracket 32 ​​can pass through the proximity sensor 31 on one side thereof once. With the help of the photoelectric effect, the proximity sensor 31 can calculate the rotation speed of the spindle 21 according to the frequency and time of the rotating bracket 32 ​​passing by.

[0034] In the above process, the operating status of the main shaft 21 in the rotor mechanism 2 can be firstly monitored by the speed detection mechanism 3, and then when the speed of the main shaft 21 does not match the set speed, it may have an adverse effect on the crusher. At this time, the PLC system will control and monitor the operating status of the main motor according to the program setting, that is, the function of daily monitoring of the main shaft 21 in this embodiment is realized.

[0035] Furthermore, it also includes a slow-turning mechanism 4, which is arranged on the outer side of the second side wall 22. The slow-turning mechanism 4 includes a bracket 41, a slide rail 42, a worm 43, a first motor 44, a second motor 45 and a shaft tooth 46. The slide rail 42 is fixed on the base 1, and the bracket 41 is slidably arranged on the slide rail 42. The worm 43 extends parallel to the slide rail 42 and is fixed on the bracket 41, and the gear of the first motor 44 is meshed with the worm 43, the second motor 45 is fixed on the bracket 41, and the shaft tooth 46 is sleeved on the main motor output shaft 47. The main motor output shaft 47 is transmission-connected to one end of the main shaft 21 through a universal joint, so that the worm 43 can drive the gear of the second motor 45 to engage or disengage with the shaft tooth 46 in a controllable manner under the drive of the first motor 44. When maintenance is required, when the main shaft 21 stops rotating, the first motor 44 starts after receiving the maintenance signal, and drives the worm 43 to slide on the slide rail 42, so that the worm 43 drives the second motor 45 on the bracket 41 to run, and pushes the gear of the second motor 45 to the direction of the shaft gear 46 until the shaft gear 46 is meshed with the gear of the second motor 45. The second motor 45 starts running, and the gear of the second motor 45 drives the shaft gear 46 to rotate in the specified direction and exerts torque on the main motor output shaft 47, so that the main motor output shaft 47 drives the main shaft 21 to rotate through the universal joint (not shown in the figure) until the maintenance is completed, the second motor 45 stops running, and the first motor 44 drives the second motor 45 to leave in the opposite direction. At this time, the gear of the second motor 45 is released from the meshing state with the shaft gear 46, and the main shaft 21 is returned to its original position. The universal joint can be variably adjusted to the connection mode between the main motor output shaft 47 and the main shaft 21 according to the motor model or site requirements.

[0036] In the above process, when the equipment is shut down and in the maintenance state, the operator starts the slow-rotation mechanism 4 to intervene, and the gear of the second motor 45 and the shaft teeth 46 are engaged to adjust the rotation of the scrap metal close to the main shaft 21, so as to efficiently complete the work such as the hammer replacement, which is to realize the auxiliary maintenance function of this embodiment. The rotor mechanism 2 and the slow-rotation mechanism 4 in the entire above structure are arranged on both sides of the outside of the rotor mechanism 2, and operate independently, which has little impact on the system, does not increase the maintenance difficulty of the crusher, and can realize flexible free rotation control of the main shaft 21 in the maintenance state.

[0037] Specifically, in this embodiment, an operating switch for an operator to control the start and stop of the second motor 45 is provided on one side of the slow-turning mechanism 4 , so that the operator can more conveniently control the main shaft 21 with the help of the slow-turning mechanism 4 .

[0038] Furthermore, if Figure 3-4As shown, the slide rail 42 extends perpendicular to the axial direction and is arranged at the bottom edge of the second side wall 12. Specifically, the slide rail 42 is arranged on one side of the shaft teeth 46, so that when the slow-turning mechanism 4 is not involved, the gear of the second motor 45 can only rely on the shaft teeth 46 and maintain a shorter preset distance. In the maintenance state, when the slow-turning mechanism 4 needs to intervene, the gear of the second motor 45 can move toward the shaft teeth 46 and mesh with the shaft teeth 46, and then the second motor 45 applies a preset speed and torque to the shaft teeth 46 until the shaft teeth 46 drive the main motor output shaft 47 to rotate at a preset speed and direction. The above-mentioned structural setting can effectively enhance the response speed of the slow-turning mechanism 4, thereby improving the maintenance efficiency.

[0039] At the same time, in this embodiment, multiple pins 22 around the main shaft 21 are quickly detachably installed on the main shaft 21, so that multiple protective covers 23 and hammer heads 24 on the pins 22 can be quickly replaced and disassembled during maintenance, which can further improve the working efficiency of the crusher of this embodiment.

[0040] Furthermore, if Figure 1 As shown, the hammer heads 24 are arranged at intervals on the pin shaft 22 through the protective cover 23 so that every two hammer heads 24 are not adjacent to each other. At the same time, each rotor mechanism 2 includes a total of 6 pin shafts. Specifically, the number of hammer heads 24 can be appropriately increased or decreased according to the crushing needs. During the crushing process, the main shaft 21 can drive the hammer heads 24 to rotate and hit the scrap metal. In this embodiment, a hammer head 24 is arranged every 60 degrees around the main shaft 21, and there is no interference from other hammer heads 24 on the left and right of each hammer head 24, so that the crushing effect of this embodiment is more uniform, and a faster crushing effect is achieved at a lower cost of the number of hammer heads 24.

[0041] Furthermore, the speed detection mechanism 3 can be electrically connected to an external PLC system. At this time, the PLC system can determine the operating state of the spindle 21 through the pulse signal input by the speed detection mechanism 3, and can detect and control the speed of the transmission mechanism that drives the spindle 21 to rotate, so that the energy supply of the spindle 21 is reduced (or increased) and the rotation is gradually decelerated (or accelerated).

[0042] Although different specific embodiments are mentioned in the content of this application, this application is not limited to the situations described in the industry standards or embodiments, etc. Some industry standards or slightly modified implementation plans based on the implementation of the custom methods or embodiments can also achieve the same, equivalent or similar, or predictable implementation effects after deformation of the above embodiments. The embodiments of data acquisition, processing, output, judgment methods, etc. after these modifications or deformations can still fall within the scope of the optional implementation plans of this application.

[0043] Although the present application has been described through embodiments, those skilled in the art will appreciate that there are many modifications and changes to the present application without departing from the spirit of the present application. It is intended that the attached embodiments include these modifications and changes without departing from the present application.

Claims

1. A scrap metal crusher rotor structure, characterized in that: include: A base, the base comprising a first side wall and a second side wall arranged opposite to each other, and a group of bearing seats arranged opposite to each other between the outer sides of the first side wall and the second side wall; A rotor mechanism, the rotor mechanism comprising a main shaft, a pin shaft, a protective cover and a hammer head, the main shaft extending in the axial direction, and at least a part of the main shaft passing through the two bearing seats, the main shaft having a plurality of axial holes arranged in an equidistant array around the axial direction, the pin shaft passing through the axial holes, the protective cover comprising a cover hole matching the pin shaft, the hammer head comprising a hammer hole matching the pin shaft, a plurality of the protective covers and the hammer heads being sleeved on the pin shaft, so that the protective covers and the hammer heads can rotate around the axial direction under the drive of the pin shaft; A rotation speed detection mechanism, wherein the rotation speed detection mechanism is arranged on the outer side of the first side wall, and the rotation speed detection mechanism includes a proximity sensor and a rotating bracket, wherein the proximity sensor is fixed on the base, and the rotating bracket is fixed on one end of the main shaft extending out of the first side wall, so that the main shaft can drive the rotating bracket to rotate around the axial direction, and the sensing end of the proximity sensor is arranged toward the rotating bracket.

2. The rotor structure of the scrap metal crusher according to claim 1, characterized in that: The invention also includes a slow-turning mechanism, which is arranged on the outer side of the second side wall. The slow-turning mechanism includes a bracket, a slide rail, a worm, a first motor, a second motor and shaft teeth. The slide rail is fixed on the base, and the bracket is slidably arranged on the slide rail. The worm extends parallel to the slide rail and is fixed on the bracket, and the gear of the first motor is meshed with the worm. The second motor is fixed on the bracket, and the shaft teeth are sleeved on the output shaft of the main motor. The output shaft of the main motor is transmission-connected to one end of the main shaft through a universal joint. The gear of the second motor matches the shaft teeth, so that the worm can drive the gear of the second motor to engage or disengage with the shaft teeth in a controllable manner under the drive of the first motor.

3. The scrap metal crusher rotor structure according to claim 2, characterized in that: The slide rail extends perpendicularly to the axial direction and is arranged at a bottom edge of the second side wall.

4. The scrap metal crusher rotor structure according to claim 1, characterized in that: The hammer heads are arranged at intervals on the pin shaft through the protective cover so that every two hammer heads are not adjacent to each other.

5. The scrap metal crusher rotor structure according to claim 1, characterized in that: Each of the rotor mechanisms includes a total of six pins.

6. The scrap metal crusher rotor structure according to claim 1, characterized in that: The proximity sensor is electrically connected to the PLC system so that when the slewing bracket rotates, the PLC can receive the pulse signal of the proximity sensor.

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