Damage device for preventing stirring arm of impeller coal feeder from being jammed
By introducing a combination of motor, speed measuring gear and controller into the impeller coal feeder arm device, detecting and responding to abnormal rotation speed of the arm, the problem of damage to the arm due to stuck hard metal materials is solved, and the safe and stable operation of the equipment and the extension of service life is achieved.
Patent Information
- Application Number
- CN202422319576.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-23
AI Technical Summary
The impeller coal feeder arm is easily stuck and damaged when in contact with hard metal materials, affecting the operation and safety of the equipment.
A damage device is designed to prevent the arm of the impeller coal feeder from being stuck, including a motor, a speed measuring gear and a controller. When the lever comes into contact with the metal material in the coal block, the controller detects the abnormal rotation speed of the speed measuring gear and sends a braking signal to stop the motor from running, preventing the lever from rotating continuously and damage.
It effectively prevents damage to the rigging arm due to stuck hard metal materials, and improves the service life and operation stability of the equipment.
Smart Images
Figure CN223046779U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of impeller coal feeders, in particular to a damage prevention device for preventing the jamming of the swing arm of an impeller coal feeder. Background Technique
[0002] The impeller coal feeder is an important device in the first process of the coal conveying system in a thermal power plant. The impeller coal feeder is generally located at the bottom of the truck coal unloading ditch or the train coal unloading ditch. The impeller coal feeder moves longitudinally along the coal ditch or stops at one place to quantitatively and evenly and continuously dial the coal onto the coal conveying belt. The reliable operation of the impeller coal feeder directly affects the safety and stability of the entire coal conveying system. Usually, when using the train ditch to unload coal, it is inevitable that some hard metal objects are mixed in when the train stacks coal blocks, such as steel bars, iron rods, etc. However, the color of the metal objects is close to that of the coal blocks, resulting in the inability to completely remove the metal materials. At the same time, when the metal objects enter the train coal ditch, they often get stuck on the swing arm of the impeller coal feeder, thus causing damage to the swing arm, resulting in affecting the operation of the equipment and causing damage to the equipment. For this reason, we have proposed a damage prevention device for preventing the jamming of the swing arm of an impeller coal feeder. Content of the Utility Model
[0003] Aiming at the deficiencies of the existing damage prevention device for preventing the jamming of the swing arm of an impeller coal feeder, the utility model provides a damage prevention device for preventing the jamming of the swing arm of an impeller coal feeder, which has the advantages that during the rotation process of the swing arm, the coal blocks are dialed to move, and at the same time, when the swing arm contacts the metal materials contained in the coal blocks, the rotation speed of the swing arm is limited. Then, the controller detects the abnormal rotation speed of the speed measuring gear and controls the motor to stop starting, that is, it avoids the damage caused by the continuous rotation of the swing arm, and solves the problems raised in the above background technique.
[0004] The utility model provides the following technical scheme: A damage prevention device for preventing the jamming of the swing arm of an impeller coal feeder, including a motor and a speed measuring gear. One end of the output shaft of the motor is fixedly connected with a first rotating rod. A speed reducer is installed at the end of the first rotating rod. The lower end of the speed reducer is connected with a second rotating rod. A connecting plate is sleeved on the front end of the outside of the motor. The middle part of the connecting plate is fixedly connected with a positioning plate. The middle part of the top of the positioning plate is fixedly connected with a controller. The lower part of the second rotating rod is fixedly connected with a swing arm mounting seat. The outside of the swing arm mounting seat is installed with a swing arm through a hinge.
[0005] Preferably, a first reduction gear and a second reduction gear are installed inside the speed reducer. The first reduction gear and the second reduction gear are meshed with each other. The first reduction gear is connected with the first rotating rod. The circle of the second reduction gear is fixedly connected with the second rotating rod. The diameter of the second reduction gear is larger than the diameter of the first reduction gear.
[0006] Preferably, the connecting plate is arranged between the motor and the speed reducer, and the positioning plate is arranged outside the speed measuring gear.
[0007] Preferably, a speed measuring gear is fixedly connected to the middle of the first rotating rod, and the lower end of the controller contacts the teeth installed outside the speed measuring gear.
[0008] Preferably, a PLC is installed inside the controller, and the controller controls the start of the motor.
[0009] Preferably, the outer part of the dial arm is arc-shaped, and a spring is installed between the dial arm mounting seat and the motor.
[0010] Preferably, a sealing plate is fixedly connected to the outside of the dial arm, and the sealing plate is sleeved outside the dial arm mounting seat.
[0011] Compared with the existing device for preventing the dial arm of the impeller coal feeder from jamming and being damaged, the present utility model has the following beneficial effects:
[0012] 1. For the device for preventing the dial arm of the impeller coal feeder from jamming and being damaged, the controller is arranged outside the speed measuring gear. The controller can detect the rotation speed of the speed measuring gear and set a moving speed range. When the dial arm rotates to move the coal block, if the dial arm contacts hard objects such as steel bars, the rotation speed of the dial arm slows down. At the same time, after the controller detects that the rotation speed is abnormal, the controller can output a braking signal through the PLC to stop the motor from running, and remotely display the equipment failure, thereby protecting the dial arm from damage and improving the overall service life of the dial arm.
[0013] 2. For the device for preventing the dial arm of the impeller coal feeder from jamming and being damaged, a spring is installed between the dial arm and the dial arm mounting seat. The spring pushes the dial arm to move outwards. When the dial arm contacts a hard object, under the action of the elasticity of the spring, the dial arm can be driven to compress inwards, that is, the device can reduce the damage caused by the instantaneous contact between the dial arm and the steel bar. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a schematic diagram of the main structure of the present utility model;
[0015] Figure 2 is a schematic side view structure diagram of the present utility model;
[0016] Figure 3 is a schematic cross-sectional view of the main body of the present utility model;
[0017] Figure 4 is a schematic enlarged partial structure diagram of the dial arm of the present utility model;
[0018] Figure 5 is a schematic cross-sectional view of the dial arm of the present utility model;
[0019] Figure 6This is a schematic diagram of the enlarged structure at location A of the present utility model.
[0020] In the figure: 1. Motor; 2. First rotating rod; 3. Reducer; 4. First reduction gear; 5. Second reduction gear; 6. Second rotating rod; 7. Connecting plate; 8. Positioning plate; 9. Controller; 10. Speed measurement gear; 11. Pivot arm mounting seat; 12. Pivot arm; 13. Sealing plate; 14. Spring. Specific embodiments
[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0022] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 , a damage prevention device for preventing the jam of the pivot arm of a coal impeller feeder, including a motor 1 and a speed measurement gear 10. One end of the output shaft of the motor 1 is fixedly connected to a first rotating rod 2, the first rotating rod 2 controls the rotation of the pivot arm 12, a reducer 3 is installed at the end of the first rotating rod 2, the reducer 3 drives the second rotating rod 6 to rotate at a reduced speed, the lower end of the reducer 3 is connected to the second rotating rod 6, a connecting plate 7 is sleeved on the front end outside the motor 1, the connecting plate 7 limits the position of the controller 9, a positioning plate 8 is fixedly connected to the middle of the connecting plate 7, the middle of the top of the positioning plate 8 is fixedly connected to the controller 9, the controller 9 detects the rotation speed of the speed measurement gear 10, and can detect the abnormal rotation speed state of the speed measurement gear 10. A pivot arm mounting seat 11 is fixedly connected to the lower part of the second rotating rod 6, and a pivot arm 12 is installed outside the pivot arm mounting seat 11 through a hinge. When the pivot arm 12 rotates, it can push the coal block to move.
[0023] Please refer to Figure 3, inside the speed reducer 3, a first reduction gear 4 and a second reduction gear 5 are installed. The first reduction gear 4 and the second reduction gear 5 are meshed and connected to each other. The first reduction gear 4 is connected to the first rotating rod 2, and the circumference of the second reduction gear 5 is fixedly connected to the second rotating rod 6. The diameter of the second reduction gear 5 is larger than that of the first reduction gear 4. By installing the first reduction gear 4 and the second reduction gear 5 inside the speed reducer 3, and the first reduction gear 4 and the second reduction gear 5 are respectively connected to the first rotating rod 2 and the second rotating rod 6. When the first rotating rod 2 rotates, through the speed reduction process of the first reduction gear 4 and the second reduction gear 5 installed inside the speed reducer 3, the second rotating rod 6 can be driven to perform a speed reduction process as a whole, avoiding the phenomenon of too fast rotation speed of the speed reducer 3.
[0024] Please refer to Figure 1 , the connecting plate 7 is arranged between the motor 1 and the speed reducer 3. At the same time, the positioning plate 8 is arranged outside the speed measuring gear 10. By installing the connecting plate 7 between the motor 1 and the speed reducer 3, the connecting plate 7 plays a role in limiting the position of the speed reducer 3. At the same time, the positioning plate 8 is arranged outside the speed measuring gear 10, that is, the positioning plate 8 can drive the controller 9 to extend outside the speed measuring gear 10, improving the stability during the positioning of the detection device.
[0025] Please refer to Figure 1 , a speed measuring gear 10 is fixedly connected to the middle of the first rotating rod 2. The lower end of the controller 9 contacts the teeth installed outside the speed measuring gear 10. By controlling the controller 9 to move outside the speed measuring gear 10, and the controller 9 contacts the teeth installed outside the speed measuring gear 10. When the speed measuring gear 10 rotates, the controller 9 can detect the rotation speed of the speed measuring gear 10.
[0026] Please refer to Figure 1 , a PLC is installed inside the controller 9. The controller 9 controls the start of the motor 1. When the dial arm 12 contacts a steel bar or a hard object, the rotation speed of the dial arm 12 is restricted, and at the same time, the rotation speed of the speed measuring gear 10 slows down. After the controller 9 detects that the rotation speed of the speed measuring gear 10 is abnormal, it will output a braking signal through the PLC to stop the operation of the motor 1, and at the same time remotely display the equipment failure, thus protecting the dial arm 12 from damage and improving the overall service life of the dial arm 12.
[0027] Please refer to Figure 4 , the outside of the dial arm 12 is arc-shaped. A spring 14 is installed between the dial arm mounting seat 11 and the motor 1. By installing the spring 14 between the dial arm 12 and the dial arm mounting seat 11, the spring 14 pushes one end of the dial arm 12 to extend outwards. At the same time, when the dial arm 12 contacts a steel bar, the dial arm 12 contracts inwards under the elastic action of the spring 14, playing a role of rebound buffer when the dial arm 12 contacts a hard object, reducing the overall damage to the dial arm 12.
[0028] Please refer to Figure 5 , a sealing plate 13 is fixedly connected to the outside of the dialing arm 12. The sealing plate 13 is sleeved on the outside of the dialing arm mounting seat 11. By arranging the sealing plate 13 on the outside of the dialing arm 12 and sleeving the sealing plate 13 on the outside of the dialing arm mounting seat 11, when the dialing arm 12 moves at an angle outside the dialing arm mounting seat 11, the movement of the sealing plate 13 outside the dialing arm mounting seat 11 is controlled, that is, the sealing plate 13 protects the hinge and spring 14 installed at the connection between the dialing arm mounting seat 11 and the dialing arm 12, reducing the impurities from falling between the connection of the dialing arm mounting seat 11 and the dialing arm 12, resulting in affecting the overall buffering performance of the dialing arm 12.
[0029] Working principle: When in use, the dialing arm 12 is controlled to move to the coal feeding area that needs to be fed. At the same time, the motor 1 is started. The motor 1 drives the first rotating rod 2 to rotate. The second rotating rod 6 is driven to rotate by reducing the speed through the speed reducer 3. At the same time, the second rotating rod 6 drives the dialing arm mounting seat 11 to drive the dialing arm 12 to rotate. The dialing arm 12 can push the coal blocks to play the role of coal feeding. At the same time, when the dialing arm 12 rotates and contacts hard objects such as steel bars, the rotation speed of the dialing arm 12 is limited after being subjected to pressure, and at the same time, the rotation speed of the first rotating rod 2 changes. And the controller 9 is arranged above the speed measuring gear 10. After the controller 9 detects that the rotation speed of the speed measuring gear 10 changes, the controller 9 controls the motor 1 to stop starting and issues an alarm to avoid the dialing arm 12 continuing to rotate and contacting the steel bar, resulting in the steel bar wearing the dialing arm 12. And when the dialing arm 12 contacts the steel bar, the spring 14 drives the dialing arm 12 to rebound inward, that is, reducing the buffer of the dialing arm 12 can reduce its damage.
[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A device for preventing the arm of an impeller coal feeder from getting stuck, comprising a motor (1) and a speed measuring gear (10), characterized in that: One end of the output shaft of the motor (1) is fixedly connected to a first rotating rod (2), a reducer (3) is installed at the end of the first rotating rod (2), the lower end of the reducer (3) is connected to a second rotating rod (6), the front end of the outside of the motor (1) is sleeved with a connecting plate (7), the middle of the connecting plate (7) is fixedly connected to a positioning plate (8), the middle of the top of the positioning plate (8) is fixedly connected to a controller (9), the lower part of the second rotating rod (6) is fixedly connected to a lever arm mounting seat (11), and a lever arm (12) is installed on the outside of the lever arm mounting seat (11) through a hinge.
2. A device for preventing the impeller coal feeder arm from getting stuck according to claim 1, characterized in that: The reducer (3) is internally installed with a first reduction gear (4) and a second reduction gear (5), wherein the first reduction gear (4) and the second reduction gear (5) are meshed and connected with each other, wherein the first reduction gear (4) and the first rotating rod (2) are connected with each other, and the second reduction gear (5) and the second rotating rod (6) are fixedly connected with each other, and the diameter of the second reduction gear (5) is greater than the diameter of the first reduction gear (4).
3. The device for preventing the impeller coal feeder arm from getting stuck according to claim 1, characterized in that: The connecting plate (7) is arranged between the motor (1) and the reducer (3), and the positioning plate (8) is arranged outside the speed measuring gear (10).
4. The device for preventing the impeller coal feeder arm from getting stuck according to claim 1, characterized in that: A speed measuring gear (10) is fixedly connected to the middle of the first rotating rod (2), and the lower end of the controller (9) is in contact with the gear teeth installed outside the speed measuring gear (10).
5. The device for preventing the impeller coal feeder arm from getting stuck according to claim 1, characterized in that: A PLC is installed inside the controller (9), wherein the controller (9) controls the start-up of the motor (1).
6. The device for preventing the impeller coal feeder arm from getting stuck according to claim 1, characterized in that: The outside of the driving arm (12) is arc-shaped, and a spring (14) is installed between the driving arm mounting seat (11) and the motor (1).
7. The device for preventing the impeller coal feeder arm from getting stuck according to claim 1, characterized in that: The outside of the driving arm (12) is fixedly connected with a sealing plate (13), and the sealing plate (13) is sleeved on the outside of the driving arm mounting seat (11).