Mud suction bridge driving device with overload protection function

Abstract

The invention discloses a mud suction bridge driving device with an overload protection function in the technical field of mud suction bridge driving, which comprises a driving base plate, two groups of first protection assemblies are mounted at the top of the driving base plate, a second protection assembly is arranged on one side, close to the first protection assemblies, of the driving base plate, and a concentric positioning shaft is mounted in the middle of the driving base plate. According to the mud suction bridge driving device designed in the scheme, the brake pad is locked by tightening the adjustable torque pull rod, the friction force between the brake pad and the shell is adjusted through the double-lug nut, and when the resistance borne by the hub is larger than the set friction force, the brake pad and the hub slip to unload force, so that the friction force between the brake pad and the hub is reduced, and the driving effect is improved. Therefore, a driving system and a rail of the mud suction bridge are effectively protected, the function of preventing the mud suction bridge from climbing the rail and clamping the rail is achieved, meanwhile, faults such as damage to weak transmission parts or derailing of a bridge body caused by overload are avoided, the service life of driving equipment is effectively prolonged, and the operation stability of the driving equipment is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge suction bridge drive, and particularly to a sludge suction bridge drive device with an overload protection function. Background Art

[0002] The sludge suction bridge drive device is a key mechanical system installed in the sedimentation tank of a sewage treatment plant. Its main function is to provide power for the sludge suction bridge to move along the bottom track or the central axis of the tank, so as to effectively scrape and transport the sludge at the bottom of the sedimentation tank. This device generally consists of components such as a drive motor, a speed reducer, a transmission shaft, a drive wheel or a walking wheel, etc. By converting electrical energy into mechanical energy, it drives the sludge suction bridge to move slowly and stably. In the secondary sedimentation tank of a sewage treatment plant, the sludge suction bridge is a key device for completing the centralized scraping and transportation of the sludge at the bottom of the sedimentation tank, and its operating conditions directly affect the sewage treatment effect.

[0003] However, the existing sludge suction bridge drive devices mostly adopt the method of using two motors in cooperation with a speed reducer to drive two drive wheels, and at the same time use two driven wheels to support and guide the bridge body. This drive method has frequent problems in actual operation. After the two motors operate for a long time, it is difficult to ensure the consistency of the walking of the drive wheels on both sides of the bridge body, which in turn leads to serious wear of the bridge body, and even causes derailment or damage to the track. These problems not only increase the maintenance cost and time investment, but also interfere with the normal operation of the sludge suction bridge and the sewage treatment effect. There is an urgent need for a new drive device that can effectively solve the above problems and improve the operation stability and reliability of the sludge suction bridge.

[0004] Based on this, we propose a sludge suction bridge drive device with an overload protection function to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract and the title of the present invention, to avoid obscuring the purpose of this part, the abstract and the title of the invention, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0006] Therefore, the purpose of the present invention is to provide a sludge suction bridge drive device with an overload protection function, which can solve the problems of asynchronous left and right drive wheels, serious wear of the bridge body, derailment and lack of overload protection caused by the existing drive method of using two motors in cooperation with a speed reducer.

[0007] To solve the above technical problems, the present invention provides a sludge suction bridge drive device with an overload protection function, adopting the following technical scheme: including a drive substrate, two groups of first protection components are installed on the top of the drive substrate, and a second protection component is arranged on one side of the drive substrate close to the first protection component;

[0008] A concentric positioning shaft is installed in the middle of the driving substrate, and a first hinge seat is arranged on one side of the top of the driving substrate;

[0009] The first protection component includes a first connecting arm plate, and a brake pad is arranged on one side of the first connecting arm plate.

[0010] Optionally, one end of the first connecting arm plate is installed with a first hinge plate, and the first hinge plate is hinged to the first hinge seat. A fixing bolt is also arranged at the end of the first hinge plate away from the first hinge plate.

[0011] Optionally, connecting seats are installed on the inner sides of the ends of the two first connecting arm plates close to the first hinge plate, and a return spring is connected between the two connecting seats.

[0012] Optionally, the second protection component includes a second connecting arm plate. A second hinge seat is installed at one end of the second connecting arm plate. A torque pull rod is connected to the end of the second hinge seat away from the second connecting arm plate. One end of the torque pull rod away from the second hinge seat is connected with an adjusting end block through a bearing.

[0013] Optionally, an oval metal block is installed at the end of the second connecting arm plate away from the adjusting end block, and the oval metal block is in hinge fit with the first hinge seat.

[0014] Optionally, the adjusting end block is fixedly connected to one side of one of the first connecting arm plates, and a double-ear nut is also threadedly connected to the end of the adjusting end block away from the torque pull rod.

[0015] In summary, the present invention includes at least one of the following beneficial effects:

[0016] 1. For the sludge suction bridge driving device designed in this solution, the brake pads are locked by tightening the adjustable torque pull rod, and the friction between the brake pads and the housing is adjusted by using the double-ear nut. When the resistance received by the wheel hub is greater than the set friction force, the brake pads and the wheel hub can slip to unload the force, thereby effectively protecting the driving system and track of the sludge suction bridge. This design realizes the function of preventing the sludge suction bridge from climbing the track and getting stuck on the track, and at the same time avoids faults such as damage to the transmission weak components or derailment of the bridge body caused by overload, effectively improving the service life and operation stability of the driving equipment, reducing the maintenance cost and workload. Through the function of adjusting the friction force by the double-ear nut, the protection torque can also be flexibly adjusted according to different working conditions and load requirements, making the adaptability and practicability of the device stronger, ensuring that the sludge suction bridge can operate stably and reliably under various complex working conditions, and providing a strong guarantee for the sewage treatment process.

[0017] 2. The sludge suction bridge drive device designed in this solution can, by setting a differential under the motor, achieve that when one side of the drive wheel is blocked and stuck, the other side of the drive wheel is allocated double the torque, reasonably control the movement of the axle, ensure the consistency of the movement of both drive wheels, and this ingenious torque distribution mechanism effectively reduces component damage caused by uneven stress, thereby improving the smoothness and reliability of the sludge suction bridge operation, achieving the purpose of reducing the equipment renewal cost and the workload of maintenance personnel. At the same time, the setting of the differential enables the sludge suction bridge to more flexibly adjust its walking posture when facing uneven tracks or local obstacles, avoiding the derailment risk caused by excessive unilateral force, further enhancing the adaptability and operation safety of the sludge suction bridge. The structure design is simple and reasonable, easy to install and maintain, and can work in coordination with other components such as drum friction couplings to jointly build an efficient, stable, and reliable sludge suction bridge drive system, providing a solid foundation for the long-term stable operation of the sewage treatment plant. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic plan view of the first protective component of the present invention;

[0021] Figure 3 It is a schematic plan view of the second protective component of the present invention.

[0022] Explanation of reference numerals: 1. Drive substrate; 2. First protective component; 3. Second protective component; 4. Concentric positioning shaft; 5. First hinge seat; 6. First connecting arm plate; 7. Brake pad; 8. First hinge plate; 9. Fixed bolt; 10. Connecting seat; 11. Return spring; 12. Second connecting arm plate; 13. Second hinge seat; 14. Torque pull rod; 15. Adjusting end block; 16. Oval metal block; 17. Double-ear nut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, rather than all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0024] Example: Refer to Figures 1 to 3 , an embodiment provided by the present invention, a sludge suction bridge driving device with an overload protection function, includes a driving substrate 1. Two groups of first protection components 2 are installed on the top of the driving substrate 1. A second protection component 3 is arranged on one side of the driving substrate 1 close to the first protection component 2. A concentric positioning shaft 4 is installed in the middle of the driving substrate 1. A first hinge seat 5 is arranged on one side of the top of the driving substrate 1. The first protection component 2 includes a first connecting arm plate 6. A brake pad 7 is arranged on one side of the first connecting arm plate 6. In this solution, the drum-type adjustable torque protection coupling applies a pre-tightening force to the brake pad 7 through the adjustable torque pull rod 14 and the double-ear nut 17. When the torque transmitted to the wheel hub is less than the set friction force, the coupling is in a locked state and drives normally. Once the load suddenly increases (such as sediment accumulation or jamming), the resistance received by the wheel hub exceeds the friction force between the brake pad 7 and the housing, and the brake pad 7 immediately slips relative to the outer shell, automatically releasing the excess torque, thereby preventing the motor from being overloaded and the drive shaft or gear from being damaged. At the same time, the differential installed under the driving motor can distribute more torque to the other side when one side driving wheel is jammed due to a fault, ensuring that the sludge suction bridge continues to walk smoothly and avoiding derailment of the bridge body or track damage caused by unilateral overload.

[0025] One end of the first connecting arm plate 6 is provided with a first hinge plate 8. The first hinge plate 8 is hingedly connected to the first hinge seat 5. At the end of the first hinge plate 8 away from the first hinge plate 8, a fixing bolt 9 is further provided. As an important force-transmitting component of the drum friction coupling, the first connecting arm plate 6 needs to accurately transmit the torque to the brake pad 7 and the hub housing when receiving the motor torque. Through the hinge connection, the first hinge plate 8 enables the two groups of first connecting arm plates 6 to rotate slightly within a predetermined plane, so as to ensure that the contact surface between the brake pad 7 and the hub always maintains good fit, improving the friction transmission efficiency. On the inner sides of the ends of the two groups of first connecting arm plates 6 close to the first hinge plate 8, connecting seats 10 are installed respectively. A return spring 11 is connected between the two groups of connecting seats 10. By adding the return spring 11 between the two groups of connecting seats 10, the return spring 11 always maintains the pulling force on the two groups of first connecting arm plates 6, and can keep the friction surface between the brake pad 7 and the hub housing in a preset contact state. After the slip torque limit protection occurs, the return spring 11 can prompt the two groups of first connecting arm plates 6 to automatically return to the initial position, ensuring that the brake pad 7 can re-clamp the hub in time and resume the normal torque transmission function. The second protection component 3 includes a second connecting arm plate 12. One end of the second connecting arm plate 12 is provided with a second hinge seat 13. At the end of the second hinge seat 13 away from the second connecting arm plate 12, a torque pull rod 14 is connected. At the end of the torque pull rod 14 away from the second hinge seat 13, an adjusting end block 15 is connected through a bearing. The second connecting arm plate 12 and the connected torque pull rod 14 and adjusting end block 15 constitute a lever and force transmission system, which can sense and respond to the overload torque. If the resistance received by the hub is too large, exceeding the friction force adjusted and set by the adjusting end block 15, the whole component will cause the brake pad 7 to slip relative to the hub, thus realizing the unloading protection, preventing damage to the drive system caused by overload, avoiding failures of key components such as the gearbox and the motor due to overload, and prolonging the service life of the equipment.

[0026] An oval metal block 16 is installed at one end of the second connecting arm plate 12 away from the adjusting end block 15. The oval metal block 16 is in hinge fit with the first hinge seat 5. As a connecting component, the oval metal block 16 can connect the second connecting arm plate 12 with the first hinge seat 5 on the driving substrate 1, and can effectively transmit force. During the overload protection process, when the brake pad 7 slips with the wheel hub, a certain force will act on the second connecting arm plate 12. The oval metal block 16 can transmit these forces to the first hinge seat 5 and the entire driving substrate 1. Through the dispersion of this force, the stress on local components is reduced, preventing component damage caused by excessive local stress, and improving the load-bearing capacity and reliability of the entire device. The adjusting end block 15 is fixedly connected to one side of one group of first connecting arm plates 6. A double-ear nut 17 is also threadedly connected to the end of the adjusting end block 15 away from the torque pull rod 14. By rotating the double-ear nut 17 threadedly connected to one end of the adjusting end block 15, the tension of the torque pull rod 14 can be precisely adjusted, and the friction force between the brake pad 7 and the wheel hub can be changed. This threaded connection method not only provides a sufficient adjustment range and accuracy, but also ensures the stability and reliability of the adjusted state.

[0027] Working principle: The sludge suction bridge drive device designed in this solution, through the coordinated cooperation of a unique drum friction coupling and related structures, takes the driving substrate 1 as the installation basis. The two groups of first protection components 2 assembled on its upper part and the second protection component 3 on one side form a key protection and torque transmission system. When the concentric positioning shaft 4 in the middle ensures the overall structural stability, the first hinge seat 5 on one side of the top provides a fulcrum for the subsequent lever linkage. One end of the first connecting arm plate 6 in the first protection component 2 is hingedly connected to the first hinge seat 5 on the driving substrate 1 through the first hinge plate 8 to form a movable joint, and the other end is fixed by a fixing bolt 9. A return spring 11 is connected between the connecting seats 10 on the inner sides of the two groups of first connecting arm plates 6 to form an elastic return structure. One end of the second connecting arm plate 12 in the second protection component 3 is equipped with a second hinge seat 13, connected to the torque pull rod 14 and the adjusting end block 15, and the oval metal block 16 at the other end is in hinge fit with the first hinge seat 5 on the driving substrate 1. At the same time, the adjusting end block 15 is fixedly connected to one side of the first connecting arm plate 6 and is threadedly connected to the double-ear nut 17.

[0028] Under normal driving conditions, the motor outputs torque, which is transmitted to the drive wheels through a series of transmission components, driving the sludge suction bridge to move along the track. When an overload situation occurs, that is, when the resistance received by the wheel hub exceeds the frictional force adjusted and set by the double-ear nut 17, slippage will occur between the brake pad 7 and the wheel hub, thereby unloading the force to prevent the sludge suction bridge from experiencing rail climbing or rail jamming faults. At the same time, the differential installed under the motor plays a key role. If one side of the drive wheel is blocked and stuck, the differential can enable the other side of the drive wheel to be allocated double the torque, reasonably controlling the movement of the axle and avoiding faults such as damage to weak components or derailment of the bridge body caused by uneven torque transmission. Through the ingenious mechanical structure design of the entire device, combining principles such as levers, hinges, and friction, effective protection and stable control of the driving process of the sludge suction bridge are achieved.

[0029] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A sludge suction bridge drive device with an overload protection function, comprising a drive substrate (1), characterized in that: Two sets of first protection components (2) are installed on the top of the driving substrate (1), and a second protection component (3) is arranged on one side of the driving substrate (1) close to the first protection component (2); A concentric positioning shaft (4) is installed in the middle of the driving substrate (1), and a first hinge seat (5) is arranged on one side of the top of the driving substrate (1); The first protection component (2) includes a first connecting arm plate (6), and a brake pad (7) is arranged on one side of the first connecting arm plate (6).

2. The sludge suction bridge driving device with an overload protection function according to claim 1, characterized in that: One end of the first connecting arm plate (6) is installed with a first hinge plate (8), and the first hinge plate (8) is hinged to the first hinge seat (5). A fixing bolt (9) is also arranged at the end of the first hinge plate (8) far from the first hinge plate (8).

3. The sludge suction bridge drive device with an overload protection function according to claim 2, characterized in that: Connecting seats (10) are installed on the inner sides of the ends of the two first connecting arm plates (6) close to the first hinge plate (8), and a return spring (11) is connected between the two connecting seats (10).

4. The sludge suction bridge driving device with an overload protection function according to claim 3, characterized in that: The second protection component (3) includes a second connecting arm plate (12), a second hinge seat (13) is installed at one end of the second connecting arm plate (12), a torque pull rod (14) is connected to the end of the second hinge seat (13) far from the second connecting arm plate (12), and an adjusting end block (15) is connected to the end of the torque pull rod (14) far from the second hinge seat (13) through a bearing.

5. The sludge suction bridge driving device with an overload protection function according to claim 4, characterized in that: An oval metal block (16) is installed at the end of the second connecting arm plate (12) far from the adjusting end block (15), and the oval metal block (16) is in hinge fit with the first hinge seat (5).

6. The sludge suction bridge driving device with an overload protection function according to claim 5, characterized in that: The adjusting end block (15) is fixedly connected to one side of one of the first connecting arm plates (6), and a double-ear nut (17) is also threadedly connected to the end of the adjusting end block (15) far from the torque pull rod (14).

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