Overload protection device for mud scraper

Abstract

The utility model relates to an overload protection device of a mud scraper. The overload protection device comprises a speed reducer over-torsion plate, a sensor, a fixing plate, a sensor pull rod A, a sensor pull rod B, a driving reduction gearbox and an equipment control box. The beneficial effects of the utility model are that the fixing plate is arranged in the stress direction of the over-torsion plate of the speed reducer, the fixing plate is used for preventing the axial displacement of the sensor, the speed reducer and the sensor are connected through the sensor pull rod, and the sensor and the fixing plate are connected through the sensor pull rod; the sensor is used for converting the collected stress for driving the reduction gearbox into an electric signal and sending the electric signal to the equipment control box; the torque display instrument can display the stress condition of the driving reduction gearbox in real time, and the equipment control box can adjust the limit value of the stress of the driving reduction gearbox at any time; the equipment control box is further used for giving an alarm according to the judgment result and sending a start-stop control signal to a power circuit of the speed reducer.

Description

Technical Field

[0001] This utility model belongs to the field of sludge scraper technology, and in particular relates to an overload protection device for a sludge scraper. Background Technology

[0002] Some existing sludge scrapers use an external torque mechanical stroke protection device at the reducer. However, this device has drawbacks such as complex structure, low precision, small adjustment range, and inability to display intuitive values. Other existing sludge scrapers use a friction plate torque protection device built into the reducer. However, this device is installed inside the reducer, is expensive, requires disassembling the reducer for adjustment, and can only display numerical values ​​in a non-intuitive percentage format. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an overload protection device for a sludge scraper.

[0004] This overload protection device for a sludge scraper includes a speed reducer, a speed reducer over-torsion plate, a sensor, a fixing plate, sensor pull rod A, sensor pull rod B, a drive gearbox, and an equipment control box.

[0005] The speed reducer is fixed to the speed reducer torsion plate. The speed reducer and the drive gearbox are shaft connected. A fixing plate is set in the force direction of the speed reducer torsion plate. The fixing plate is welded to the housing of the drive gearbox. The fixing plate is used to prevent the axial displacement of the sensor.

[0006] The reducer is connected to sensor tie rod A, and sensor tie rod A is connected to the sensor (sensor tie rod A is used to connect the reducer and the sensor); the sensor is connected to sensor tie rod B, and sensor tie rod B is connected to the mounting plate (sensor tie rod B is used to connect the sensor and the mounting plate); the reducer outputs torque to sensor tie rod A, and sensor tie rod A outputs axial force to the sensor, so that the sensor is subjected to axial tension or axial pressure;

[0007] The drive gearbox is electrically connected to the load input, and the sensor is electrically connected to the equipment control box.

[0008] The sensor is used to convert the collected force on the drive gearbox into an electrical signal and send the electrical signal to the equipment control box;

[0009] Equipment control box: used to display the force on the drive gearbox corresponding to the electrical signal; used to determine whether the force on the drive gearbox exceeds the limit value and issue an alarm based on the judgment result; sent start and stop control signals to the power circuit of the reducer; used to adjust the magnitude of the limit value.

[0010] As a preferred option, the sensor incorporates a force-measuring chip, which is used to sensitively detect changes in the applied force.

[0011] Preferably, the sensor is electrically connected to the equipment control box via a signal cable.

[0012] As a preferred option, the control panel of the equipment control box is equipped with a torque display.

[0013] Preferably, the reducer, sensor, sensor tie rod A, fixing plate, drive gearbox, reducer torsion plate and sensor tie rod B are all mounted on the mounting platform.

[0014] The beneficial effects of this utility model are:

[0015] The overload protection device for the sludge scraper designed in this utility model has a fixed plate installed in the force direction of the reducer's torsion plate. The fixed plate is used to prevent the axial displacement of the sensor. The reducer and the sensor, as well as the sensor and the fixed plate, are connected by sensor tie rods. The sensor is used to convert the collected force on the drive reduction gearbox into an electrical signal and send the electrical signal to the equipment control box. The torque display can display the force on the drive reduction gearbox in real time, and the equipment control box can adjust the force limit value of the drive reduction gearbox at any time. The equipment control box is also used to issue alarms and send start and stop control signals to the power circuit of the reducer based on the judgment result.

[0016] The overload protection device for the sludge scraper designed in this utility model has a simple structure, high precision, flexible adjustment range, and can display values ​​intuitively. The equipment control box can adjust the force limit value of the drive reduction gearbox at any time without disassembling the device, and can display the force condition of the drive reduction gearbox in the form of specific values. Attached Figure Description

[0017] Figure 1 This is a side perspective view of the overload protection device for the sludge scraper;

[0018] Figure 2 A top perspective view and connection diagram of the overload protection device for the sludge scraper;

[0019] Explanation of reference numerals in the attached drawings: 1. Reducer; 2. Sensor; 3. Sensor tie rod A; 4. Fixing plate; 5. Drive gearbox; 6. Reducer torsion plate; 7. Mounting platform; 8. Signal cable; 9. Equipment control box; 10. Torque display; 11. Sensor tie rod B. Detailed Implementation

[0020] The present invention will be further described below with reference to embodiments. The description of the embodiments below is only for the purpose of helping to understand the present invention. It should be noted that, for those skilled in the art, several modifications can be made to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0021] As one example, such as Figure 1 and Figure 2 As shown, an overload protection device for a sludge scraper is provided. The sludge scraper is equipped with a reducer 1. The overload protection device includes: a reducer torsion plate 6, a sensor 2, a fixing plate 4, a sensor pull rod A3, a sensor pull rod B11, a drive reduction gearbox 5, and an equipment control box 9. The sensor 2 is equipped with a force measuring chip, which is used to sensitively detect changes in force. The reducer 1, sensor 2, sensor pull rod A3, fixing plate 4, drive reduction gearbox 5, reducer torsion plate 6, and sensor pull rod B11 are all mounted on the mounting platform 7.

[0022] The reducer 1 is fixed on the reducer torsion plate 6. The reducer 1 and the drive reduction gearbox 5 are axially connected. A fixing plate 4 is provided in the force direction of the reducer torsion plate 6. The fixing plate 4 is welded to the housing of the drive reduction gearbox 5. The fixing plate is used to prevent the axial displacement of the sensor.

[0023] The reducer 1 is connected to the sensor tie rod A3, and the sensor tie rod A3 is connected to the sensor 2 (the sensor tie rod A is used to connect the reducer and the sensor); the sensor 2 is connected to the sensor tie rod B11, and the sensor tie rod B11 is connected to the fixing plate 4 (the sensor tie rod B is used to connect the sensor and the fixing plate); the reducer outputs torque to the sensor tie rod A, and the sensor tie rod A outputs axial force to the sensor, so that the sensor is subjected to axial tension or axial pressure;

[0024] The drive reduction gearbox 5 is electrically connected to the load input, and the sensor 2 is electrically connected to the equipment control box 9 via the signal cable 8; the control panel of the equipment control box 9 is equipped with a torque display 10;

[0025] Sensor 2 is used to convert the collected force on the drive reduction gearbox 5 into an electrical signal and send the electrical signal to the equipment control box 9;

[0026] Equipment control box 9: Used to display the force on the drive reduction gearbox 5 corresponding to the electrical signal; used to determine whether the force on the drive reduction gearbox 5 exceeds the limit value and to issue an alarm based on the determination result, and to send start / stop control signals to the power circuit of the reducer 1; used to adjust the magnitude of the limit value. Sensor 2 is electrically connected to a dedicated torque display instrument 10 on the equipment control box 9 via signal cable 8;

[0027] The reducer 1 and the drive gearbox 5 are shaft-connected. When the force on the drive gearbox 5 (load end) fluctuates, its reaction force is transmitted through the reducer 1, sensor rod A3 and sensor 2. The load change is transmitted to the torque display 10 through the signal cable 8. The load / force magnitude during the working process is directly displayed on the torque display 10. If the force fluctuation of the drive gearbox 5 (load end) exceeds the set value, the torque display 10 sends an alarm signal to the equipment control box 9 of the reducer 1. Once the load / force magnitude fed back by the alarm signal exceeds the limit value, the equipment control box 9 cuts off the power circuit of the reducer 1, the reducer 1 stops and issues an alarm, ensuring the safety of the reducer 1.

Claims

1. An overload protection device for a sludge scraper, wherein the sludge scraper is equipped with a reducer (1), characterized in that, The overload protection device for the sludge scraper includes: a speed reducer over-torsion plate (6), a sensor (2), a fixing plate (4), a sensor pull rod A (3), a sensor pull rod B (11), a drive reduction gearbox (5), and an equipment control box (9); The reducer (1) is fixed on the reducer torsion plate (6), the reducer (1) and the drive reduction gearbox (5) are axially connected, the fixed plate (4) is provided in the force direction of the reducer torsion plate (6), and the fixed plate (4) is welded to the housing of the drive reduction gearbox (5). The reducer (1) is connected to the sensor rod A (3), the sensor rod A (3) is connected to the sensor (2); the sensor (2) is connected to the sensor rod B (11), the sensor rod B (11) is connected to the fixing plate (4); The drive reduction gearbox (5) is electrically connected to the load input, and the sensor (2) is electrically connected to the equipment control box (9). The sensor (2) is used to convert the collected force on the drive reduction gearbox (5) into an electrical signal and send the electrical signal to the equipment control box (9); The equipment control box (9) is used to display the force on the drive reduction gearbox (5) corresponding to the electrical signal; to determine whether the force on the drive reduction gearbox (5) exceeds the limit value and to issue an alarm and send a start-stop control signal to the power circuit of the reducer (1) according to the judgment result; and to adjust the size of the limit value.

2. The overload protection device for the sludge scraper according to claim 1, characterized in that: The sensor (2) contains a force measuring chip.

3. The overload protection device for the sludge scraper according to claim 1, characterized in that: The sensor (2) is electrically connected to the equipment control box (9) via the signal cable (8).

4. The overload protection device for the sludge scraper according to claim 3, characterized in that: The torque display (10) is provided on the control panel of the equipment control box (9).

5. The overload protection device for the sludge scraper according to claim 1, characterized in that: The speed reducer (1), the sensor (2), the sensor pull rod A (3), the fixing plate (4), the drive reduction gearbox (5), the speed reducer torsion plate (6), and the sensor pull rod B (11) are all mounted on the mounting platform (7).

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