Torque protection device for cantilever slewing mechanism of bucket-wheel reclaimer

Abstract

The utility model relates to the technical field of bucket-wheel reclaimers, and discloses a bucket-wheel reclaimer cantilever slewing mechanism torque protection device which comprises a base, a mounting groove is formed in the base, a motor is fixedly connected to the left side in the mounting groove, and the output end of the motor is fixedly connected with an over-torque coupler. A brake is arranged on the right side of the over-torque coupler, a torque sensor is fixedly connected to the right side of the brake, a speed reducer is fixedly connected to the right side of the torque sensor, the top conveying end of the speed reducer penetrates through the base to be fixedly connected with a rotating shaft, and a rotating disc is fixedly connected to the top of the rotating shaft. According to the utility model, the torque sensor is used for continuously monitoring the torque borne by the connecting part. During walking or rotation, the torque can be monitored in real time, and when the torque is increased abnormally, measures can be taken in time, such as adjusting the output power of a motor or triggering an alarm, so that the brake is prevented from losing efficacy due to overload.

Description

Technical Field

[0001] This utility model relates to the technical field of bucket wheel reclaimers, specifically a torque protection device for the cantilever slewing mechanism of a bucket wheel reclaimer. Background Technology

[0002] A bucket wheel reclaimer is a large, continuous bulk material handling equipment, mainly used for excavating and retrieving materials from stockyards (such as bulk cargo yards in ports and ore yards in mines). The cantilever slewing mechanism is a crucial component of this equipment, primarily consisting of a slewing drive unit, a large slewing bearing, a bearing ring, a flange, gears, a gear cover, and fasteners. The slewing drive unit comprises a motor, a reducer, a brake, a torque coupling, a base, and a cover. The slewing mechanism is installed between the gantry and the turntable. The lower bearing ring is fixed to the gantry, and its upper part is connected to the outer ring of the large bearing with external teeth. The upper bearing ring supports the turntable, and its lower part is connected to the inner ring of the large bearing. The slewing drive unit is installed at the tail of the turntable. The drive gear on the reducer's output shaft meshes with the external teeth of the large bearing, and the rotation of the turntable relative to the gantry is achieved through power transmission from the motor.

[0003] The cantilever, slewing mechanism, and traveling mechanism of a bucket wheel reclaimer are subjected to enormous forces and torques during operation. When the cantilever collides with a coal pile during travel or slewing, it experiences forces from the coal pile. Under excessive stress, the cantilever may bend and deform, and the gears and bearings of the slewing mechanism may be damaged due to overload. This can severely damage the mechanical structure of the bucket wheel reclaimer, requiring expensive repairs and component replacements, and in severe cases, may even cause the reclaimer to overturn. Currently, the slewing drive of a bucket wheel reclaimer only has a torque coupling, which only functions when the brake is open during operation. When the brake is closed, it provides no protection when traveling to reclaim material or encountering material piles or obstacles during travel.

[0004] To address the aforementioned issues, a torque protection device for the cantilever slewing mechanism of a bucket wheel reclaimer is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a torque protection device for the cantilever slewing mechanism of a bucket wheel reclaimer, which solves the problem in the background art that when the cantilever collides with the coal pile, the cantilever will be subjected to the force of the coal pile, and the cantilever may bend and deform under excessive force, and the gears and bearings of the slewing mechanism may be damaged due to overload.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a torque protection device for the cantilever slewing mechanism of a bucket wheel reclaimer, comprising a base, an installation groove provided in the base, a motor fixedly connected to the left side of the installation groove, an over-torque coupling fixedly connected to the output end of the motor, a brake provided to the right side of the over-torque coupling, a torque sensor fixedly connected to the right side of the brake, a reducer fixedly connected to the right side of the torque sensor, a rotating shaft fixedly connected to the top conveying end of the reducer through the base, a rotating disk fixedly connected to the top of the rotating shaft, a machine body fixedly connected to the top of the rotating disk, a cantilever belt conveyor provided to the right side of the machine body, a bucket wheel provided at the end of the cantilever belt conveyor, and a tracked chassis fixedly connected to the bottom of the base.

[0007] By employing the above technical solution, a torque sensor continuously monitors the torque experienced by its connecting components. During travel or rotation, when the cantilever collides with the coal pile, causing an increase in the torque on the cantilever rotation mechanism, the torque sensor detects this change in real time and converts the monitored torque data into an electrical signal. Once the monitored torque exceeds a preset safety threshold, the torque sensor immediately transmits an abnormal signal to the controller at the front end of the base.

[0008] As a further description of the above technical solution: the left side of the brake is fixedly connected to the torque coupling.

[0009] By adopting the above technical solution, power can be transmitted to the brake on the right side through the torque coupling. The brake can control the transmission and stop of power according to the working requirements, so as to achieve precise control of the start and stop of the entire rotary mechanism.

[0010] As a further description of the above technical solution: the bottom of the reducer is fixedly connected to the mounting groove.

[0011] By adopting the above technical solution, the reducer reduces and increases the torque of the power, making the output power more suitable for driving the cantilever rotation.

[0012] As a further description of the above technical solution: the outer ring of the rotating shaft is rotatably connected to a mounting platform, and the bottom of the mounting platform is fixedly connected to the top of the base.

[0013] By adopting the above technical solution, the rotating shaft can rotate within the mounting platform.

[0014] As a further description of the above technical solution: a driver's cab is fixedly connected to the top of the machine body.

[0015] By adopting the above technical solution, it is easier for operators to drive.

[0016] As a further description of the above technical solution: a controller is fixedly connected to the front end of the base.

[0017] By adopting the above technical solution, the controller can quickly analyze and process the abnormal signal received from the torque sensor.

[0018] As a further description of the above technical solution: an alarm is fixedly connected to the right side of the base.

[0019] By adopting the above technical solution, an alarm is issued through an alarm device to remind operators of abnormal equipment conditions.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] This utility model provides a torque protection device for the cantilever slewing mechanism of a bucket wheel reclaimer. The device works in conjunction with a motor, over-torque coupling, brake, torque sensor, reducer, rotating disc, controller, and alarm. The torque sensor continuously monitors the torque applied to the connected components. During travel or rotation, the device monitors the torque in real time. When the torque abnormally increases, timely measures can be taken, such as adjusting the motor's output power or triggering the alarm, to prevent brake failure due to overload. Simultaneously, it prevents damage to the equipment caused by excessive torque transmitted to subsequent mechanical parts, thus effectively protecting the entire transmission system. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the base of this utility model.

[0024] In the diagram: 1. Base; 2. Motor; 3. Torque coupling; 4. Brake; 5. Torque sensor; 6. Reducer; 7. Shaft; 8. Mounting platform; 9. Rotary disc; 10. Machine body; 11. Cab; 12. Cantilever belt conveyor; 13. Bucket wheel; 14. Tracked chassis; 15. Controller; 16. Alarm; 17. Mounting slot. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] To further understand the contents of this utility model, a detailed description of this utility model will be provided with reference to the accompanying drawings.

[0027] Reference Figure 1 and Figure 2 This utility model discloses a torque protection device for the cantilever slewing mechanism of a bucket wheel reclaimer, comprising a base 1, which provides support. The base 1 has an installation groove 17 for easy installation of a motor 2 and a reducer 6. The motor 2 is fixedly connected to the left side of the installation groove 17. An over-torque coupling 3 is fixedly connected to the output end of the motor 2, transmitting power to a brake 4 via the torque coupling 3. The brake 4 can control the braking torque to start, stop, or adjust the speed of the cantilever slewing, ensuring precise control of the slewing action. The brake 4 is located to the right of the over-torque coupling 3, and a torque sensor 5 is fixedly connected to the right side of the brake 4, monitoring the current torque value in real time. The reducer 6 is fixedly connected to the right side of the torque sensor 5, reducing and increasing the torque of the power. A rotating shaft 7 is fixedly connected to the top of the reducer 6, passing through the base 1. A rotating disk 9 is fixedly connected to the top of the rotating shaft 7, driving the rotating disk 9 to rotate. The top of the rotating disk 9 is fixedly connected to the body 10. A cantilever belt conveyor 12 is installed on the right side of the body 10, and a bucket wheel 13 is installed at the end of the cantilever belt conveyor 12. The cantilever belt conveyor 12 and the bucket wheel 13 enable the bucket wheel reclaimer to pick up and transport materials. A tracked chassis 14 is fixedly connected to the bottom of the base 1 to facilitate the movement of the bucket wheel reclaimer.

[0028] Reference Figure 1 and Figure 2 The left side of brake 4 is fixedly connected to torque coupling 3, allowing power to be transmitted to brake 4 on the right side via torque coupling 3. Brake 4 can control the transmission and stop of power according to work requirements, achieving precise control of the start and stop of the entire slewing mechanism. The bottom of reducer 6 is fixedly connected to mounting groove 17. Reducer 6 reduces and increases the torque of the power, making the output power more suitable for driving the cantilever slewing. The outer ring of shaft 7 passes through and is rotatably connected to mounting platform 8, and the bottom of mounting platform 8 is fixedly connected to the top of base 1, allowing shaft 7 to rotate within mounting platform 8. The top of machine body 10 is fixedly connected to cab 11 for easy operation. The front end of base 1 is fixedly connected to controller 15. After receiving abnormal signals from torque sensor 5, controller 15 quickly analyzes and processes them. The right side of base 1 is fixedly connected to alarm 16, which sounds an alarm to alert the operator of any abnormal equipment conditions.

[0029] Working Principle: The motor 2, located on the left side of the mounting slot 17 inside the base 1, serves as the power source. The torque coupling 3 connected to the output end of the motor 2 transmits the power of the motor 2 to subsequent components. The torque coupling 3 not only transmits power but also automatically disconnects when the torque exceeds the set value, providing initial protection. Power is then transmitted to the brake 4 on the right side via the torque coupling 3. The brake 4 can control the transmission and stop of power according to work requirements, achieving precise control of the start and stop of the entire slewing mechanism. Subsequently, the power is transmitted to the torque sensor 5 via the brake 4. The torque sensor 5 monitors the magnitude of the applied torque in real time while transmitting power. Next, the power is transmitted to the reducer 6, which reduces the power and increases the torque, making the output power more suitable for driving the cantilever slewing. The power processed by the reducer 6 is transmitted to the rotating disk 9 through the shaft 7 passing through the base 1. This drives the machine body 10, cantilever belt conveyor 12, and bucket wheel 13, which are fixed on the rotating disk 9, to rotate, realizing the material handling and conveying operations of the bucket wheel reclaimer. For torque monitoring and protection, the torque sensor 5 continuously monitors the torque on its connecting components. When the bucket wheel 13 encounters significant resistance during material handling, or when the cantilever belt conveyor 12 collides with the coal pile during travel or rotation, causing an increase in the torque on the cantilever rotation mechanism, the torque sensor 5 will detect this change in real time and convert the monitored torque data into an electrical signal. Once the monitored torque exceeds a preset safety threshold, the torque sensor 5 will immediately transmit an abnormal signal to the controller 15, and the signal processing and feedback mechanism will be activated. After receiving the abnormal signal from the torque sensor 5, the controller 15 will quickly analyze and process it. On the one hand, the controller 15 will immediately issue a command to control the brake 4 to brake, cut off the power transmission, and prevent damage to the equipment due to excessive torque; on the other hand, the controller 15 will trigger the alarm 16 on the right side of the base 1 to sound an alarm, reminding the operator that the equipment is in an abnormal condition.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A torque protection device for the cantilever slewing mechanism of a bucket wheel reclaimer, comprising a base (1), characterized in that: The base (1) is provided with an installation groove (17). A motor (2) is fixedly connected to the left side of the installation groove (17). An over-torque coupling (3) is fixedly connected to the output end of the motor (2). A brake (4) is provided to the right side of the over-torque coupling (3). A torque sensor (5) is fixedly connected to the right side of the brake (4). A reducer (6) is fixedly connected to the right side of the torque sensor (5). A rotating shaft (7) is fixedly connected to the top of the reducer (6) through the base (1). A rotating disk (9) is fixedly connected to the top of the rotating shaft (7). An organic body (10) is fixedly connected to the top of the rotating disk (9). A cantilever belt conveyor (12) is provided to the right side of the organic body (10). A bucket wheel (13) is provided at the end of the cantilever belt conveyor (12). A tracked chassis (14) is fixedly connected to the bottom of the base (1).

2. The torque protection device for the cantilever slewing mechanism of a bucket wheel reclaimer according to claim 1, characterized in that: The left side of the brake (4) is fixedly connected to the torque coupling (3).

3. The torque protection device for the cantilever slewing mechanism of a bucket wheel reclaimer according to claim 1, characterized in that: The bottom of the reducer (6) is fixedly connected to the mounting groove (17).

4. The torque protection device for the cantilever slewing mechanism of a bucket wheel reclaimer according to claim 1, characterized in that: The outer ring of the rotating shaft (7) is connected to the mounting platform (8) through and rotates, and the bottom of the mounting platform (8) is fixedly connected to the top of the base (1).

5. The torque protection device for the cantilever slewing mechanism of a bucket wheel reclaimer according to claim 1, characterized in that: The top of the body (10) is fixedly connected to the driver's cab (11).

6. The torque protection device for the cantilever slewing mechanism of a bucket wheel reclaimer according to claim 1, characterized in that: The base (1) has a controller (15) fixedly connected to its front end.

7. The torque protection device for the cantilever slewing mechanism of a bucket wheel reclaimer according to claim 1, characterized in that: An alarm (16) is fixedly connected to the right side of the base (1).

Images