Torsion device for mud scraper

Abstract

The utility model relates to a torsion device for a mud scraper, which belongs to the technical field of mud scraper equipment and comprises a base, a speed reducing motor is arranged at the upper end of the base, a transmission shaft movably connected with the base in a penetrating and sleeving manner is arranged at the lower end of the speed reducing motor, and a torsion component is arranged on the side edge of the speed reducing motor. An L-shaped connecting plate is arranged between the torsion assembly and the gear motor, wherein the L-shaped connecting plate is connected and fixed with the waist circular groove type pin shaft in a sliding mode. The torsion assembly comprises an adjusting sleeve, a push rod fixedly connected with the L-shaped connecting plate in a sliding mode is arranged in the adjusting sleeve, and a plurality of limiting switches are arranged at the upper end of the rear portion of the push rod. The device has the characteristics of compact structure, high operation stability and good use effect. When the rotating torque of the mud scraper is too large, a torque signal is fed back through the torsion protection structure, a power source is cut off, and the protection effect on transmission parts of the mud scraper is achieved. And meanwhile, the speed reducer and the mud scraper are connected and disconnected through the mechanical safety pin.

Description

Technical Field

[0001] The utility model relates to the technical field of mud scraper equipment, in particular to a torque device used for a mud scraper. Background Art

[0002] A scraper is a machine that removes sludge from a river. It is used in large-diameter circular sedimentation tanks in urban sewage treatment plants, water plants, and industrial wastewater treatment to remove sludge settled at the bottom of the tank and skim off scum on the surface of the tank. When the load on the scraper increases, the load on the motor increases. When the load on the scraper is too large, the speed of the scraper cannot be increased, the speed of the scraper does not match the output speed of the reducer, and the reducer or motor is damaged due to excessive load.

[0003] When fine suspended matter in wastewater settles to the bottom of the clarifier through flocculation to form sludge, the scraper in the clarifier fully stirs to prevent sludge from settling. Due to the high adhesion of sludge, during the operation of the scraper, especially during the startup process, the rotation torque of the scraper is too large, even exceeding the rated limit. In the case of excessive torque, the scraper gearbox displacement, transmission chain breakage and fall-off, base frame deformation and other faults often occur, seriously affecting the normal operation of the clarifier.

[0004] The motor drive device drives the shaft to rotate by driving the motor, thereby driving other mechanical structures to achieve the purpose of transmitting force. However, during the operation of the motor drive device, sudden events such as overload and mechanical failure may cause damage to the motor and the machine itself. After the failure occurs, the drive device equipped with a safety pin mechanism still drives the motor after the safety pin breaks, and the ordinary safety mechanism cannot timely and accurately convey the signal that the drive device safety pin has broken to the control center, causing the control center to mistakenly believe that the equipment is still operating normally. This will cause various other failures, resulting in losses. Summary of the invention

[0005] The utility model mainly solves the deficiencies existing in the prior art and provides a torque device for a scraper, which has the characteristics of compact structure, high operating stability and good use effect. The problem of equipment loss caused by torque overload during the operation of the scraper is solved. When the rotation torque of the scraper is too large, the torque protection structure feeds back the torque signal and cuts off the power supply, thereby protecting the transmission parts of the scraper itself. At the same time, the connection between the reducer and the scraper is disconnected by a mechanical safety pin.

[0006] The above technical problems of the utility model are mainly solved by the following technical solutions:

[0007] A torque device for a mud scraper includes a base, a reduction motor is provided at the upper end of the base, a transmission shaft movably connected to the base is provided at the lower end of the reduction motor, a torque assembly is provided on the side of the reduction motor, and an L-shaped connecting plate is provided between the torque assembly and the reduction motor and is slidably connected and fixed by a waist-shaped circular groove pin shaft. The torque assembly includes an adjustment sleeve, a push rod is provided in the adjustment sleeve and is slidably connected and fixed to the L-shaped connecting plate, and a plurality of limit switches are provided at the upper rear end of the push rod.

[0008] Preferably, the outer periphery of the adjustment sleeve is provided with a protective shell connected and fixed with the limit switch screw, a support rod connection seat connected and fixed with the base by bolts is provided between the lower end of the protective shell and the base, a visual torque indicator is provided at the side end of the protective shell, and a pointer is provided on the push rod. Through the pointer and the visual torque indicator, the actual operation of the torque when the drive device is running can be directly observed and whether the operation is normal can be judged.

[0009] Preferably, the lower rear end of the protective shell is provided with a waterproof joint which is threadedly connected and fixed to the protective shell, and the lower end of the adjustment sleeve is provided with a wiring terminal which is connected to the limit switch circuit.

[0010] Preferably, a torque adjustment screw is provided at the rear end of the adjustment sleeve, a spring is provided between the torque adjustment screw and the push rod and is sleeved with the push rod, and a protective cover cap is provided on the periphery of the torque adjustment screw and is screwed and fixed to the adjustment sleeve. The protective cover cap can be opened to change the initial operating torque on site through the torque adjustment screw without the need for adjustment through an electrical button, which makes the operation easier.

[0011] Preferably, a shaft sleeve movably connected to the transmission shaft is provided between the upper and lower parts of the base and the transmission shaft.

[0012] Preferably, a mechanical safety pin is provided between the upper end of the transmission shaft and the reduction motor. When the torque is overloaded, the mechanical safety pin cuts off the connection between the reduction motor and the scraper, thereby protecting the reduction motor from damage due to excessive load.

[0013] Preferably, a connecting flange frame sleeved with the transmission shaft is provided between the reduction motor and the base.

[0014] The utility model can achieve the following effects:

[0015] The utility model provides a torque device for a mud scraper, which has the characteristics of compact structure, high operating stability and good use effect compared with the prior art. The utility model solves the problem of equipment loss caused by torque overload during operation of the mud scraper. When the rotation torque of the mud scraper is too large, the torque protection structure feeds back the torque signal and cuts off the power supply, thereby protecting the transmission parts of the mud scraper itself. At the same time, the connection between the reducer and the mud scraper is disconnected by a mechanical safety pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 2 It is a front view structural schematic diagram of the utility model.

[0018] Figure 3 It is a top view structural schematic diagram of the utility model.

[0019] Figure 4 It is a front view structural schematic diagram of the utility model without the reduction motor.

[0020] Figure 5 It is a partial structural sectional view of the utility model without the reduction motor.

[0021] Figure 6 It is a structural schematic diagram of the torsion assembly in the utility model.

[0022] In the figure: reduction motor 1, L-shaped connecting plate 2, base 3, torque assembly 4, push rod 5, pointer 6, visual torque indicator 7, protective shell 8, protective cover cap 9, support rod connecting seat 10, transmission shaft 11, mechanical safety pin 12, torque adjustment screw 13, waterproof joint 14, connecting flange frame 15, sleeve 16, adjustment sleeve 17, limit switch 18, spring 19, and terminal 20. DETAILED DESCRIPTION

[0023] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0024] Example: Figure 1-6As shown, a torque device for a mud scraper includes a base 3, a reduction motor 1 is provided at the upper end of the base 3, and a connecting flange frame 15 sleeved with a transmission shaft 11 is provided between the reduction motor 1 and the base 3. A transmission shaft 11 movably sleeved with the base 3 is provided at the lower end of the reduction motor 1, and a mechanical safety pin 12 is provided between the upper end of the transmission shaft 11 and the reduction motor 1. A shaft sleeve 16 movably sleeved with the transmission shaft 11 is provided between the upper and lower parts of the base 3 and the transmission shaft 11. A torque assembly 4 is provided on the side of the reduction motor 1, and an L-shaped connecting plate 2 slidably connected and fixed with a waist-shaped circular groove pin shaft is provided between the torque assembly 4 and the reduction motor 1. The torque assembly 4 includes an adjustment sleeve 17, and a push rod 5 slidably connected and fixed with the L-shaped connecting plate 2 is provided in the adjustment sleeve 17, and two limit switches 18 are provided at the upper end of the rear of the push rod 5. A torque adjustment screw 13 is provided at the rear end of the adjustment sleeve 17, a spring 19 sleeved with the push rod 5 is provided between the torque adjustment screw 13 and the push rod 5, and a protective cap 9 screwed and fixed to the adjustment sleeve 17 is provided on the periphery of the torque adjustment screw 13. A protective housing 8 screwed and fixed to the limit switch 18 is provided on the periphery of the adjustment sleeve 17, a support rod connection seat 10 bolted and fixed to the base 3 is provided between the lower end of the protective housing 8 and the base 3, a visual torque indicator 7 is provided on the side end of the protective housing 8, and a pointer 6 is provided on the push rod 5. A waterproof joint 14 threadedly sleeved and connected to the protective housing 8 is provided at the lower end of the rear part of the protective housing 8, and a wiring terminal 20 connected to the limit switch 18 is provided at the lower end of the adjustment sleeve 17.

[0025] When the load reaches 120% of the load of the reduction motor 1, the torque assembly 4 sends an alarm signal. When the load reaches 150%, the torque assembly 4 sends a stop signal and controls the reduction motor 1 to stop, ensuring the safety performance of the reduction motor 1 and the scraper, and at the same time troubleshooting the cause of the sedimentation tank.

[0026] In summary, the torque device for the scraper has the characteristics of compact structure, high operating stability and good use effect. It solves the problem of equipment loss caused by torque overload during the operation of the scraper. When the rotation torque of the scraper is too large, the torque protection structure feeds back the torque signal and cuts off the power supply to protect the transmission parts of the scraper itself. At the same time, the connection between the reducer and the scraper is disconnected through the mechanical safety pin.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

[0028] In summary, the above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the patent scope of the present invention.

Claims

1. A torque device for a mud scraper, characterized in that: The invention comprises a base (3), wherein a reduction motor (1) is provided at the upper end of the base (3), wherein a transmission shaft (11) movably penetrates and sleeves the base (3) at the lower end of the reduction motor (1), wherein a torque assembly (4) is provided on the side of the reduction motor (1), wherein an L-shaped connecting plate (2) is provided between the torque assembly (4) and the reduction motor (1) and is slidably connected and fixed by a waist-shaped circular groove pin shaft; wherein the torque assembly (4) comprises an adjusting sleeve (17), wherein a push rod (5) is provided in the adjusting sleeve (17) and is slidably connected and fixed to the L-shaped connecting plate (2), and a plurality of limit switches (18) are provided at the upper rear end of the push rod (5).

2. A torque device for a mud scraper according to claim 1, characterized in that: The outer periphery of the adjustment sleeve (17) is provided with a protective shell (8) which is screw-fixed to the limit switch (18); a support rod connecting seat (10) which is bolt-fixed to the base (3) is provided between the lower end of the protective shell (8) and the base (3); a visual torque indicator (7) is provided on the side end of the protective shell (8); and a pointer (6) is provided on the push rod (5).

3. A torque device for a mud scraper according to claim 2, characterized in that: The lower rear end of the protective housing (8) is provided with a waterproof joint (14) which is threadedly connected and fixed to the protective housing (8), and the lower end of the adjustment sleeve (17) is provided with a wiring terminal (20) which is connected to the limit switch (18) in an electrical circuit.

4. A torque device for a mud scraper according to claim 1, characterized in that: A torque adjustment screw (13) is provided at the rear end of the adjustment sleeve (17), a spring (19) sleeved with the push rod (5) is provided between the torque adjustment screw (13) and the push rod (5), and a protective cover cap (9) is provided on the periphery of the torque adjustment screw (13) and is screw-fixed with the adjustment sleeve (17).

5. A torque device for a mud scraper according to claim 1, characterized in that: A shaft sleeve (16) movably sleeved with the transmission shaft (11) is provided between the upper and lower parts of the base (3) and the transmission shaft (11).

6. A torque device for a mud scraper according to claim 1, characterized in that: A mechanical safety pin (12) is provided between the upper end of the transmission shaft (11) and the reduction motor (1).

7. A torque device for a mud scraper according to claim 1, characterized in that: A connecting flange frame (15) sleeved with the transmission shaft (11) is provided between the reduction motor (1) and the base (3).

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