Overload protection device of center transmission mud scraping and sucking machine

Abstract

The utility model discloses an overload protection device for a central transmission mud scraping and sucking machine, which comprises a driving seat, a rotating support is mounted on the lower surface of the driving seat through a rotary support, a driving component for driving the rotating support to rotate is arranged on the driving seat, and a bearing ring is fixed in the center of the upper surface of the rotating support through a screw. A main shaft is arranged in the middle of the bearing ring, the upper end of the main shaft penetrates through and extends to the upper end of the bearing ring, a torsion pin perpendicularly connected with the main shaft in an inserted mode is arranged at the upper end of the main shaft, two rectangular grooves for positioning the two ends of the torsion pin are formed in the upper end of the bearing ring, and a cambered surface groove corresponding to the torsion pin is formed in one end of each rectangular groove. The upper surface of the inner side of the rectangular groove is provided with an adjusting pad, the overload protection device for the center transmission mud scraping and sucking machine is simple in structural design and convenient to assemble, the operation stability is improved, the manufacturing cost is reduced, and the service life of the device is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of scraper-suction machines, in particular to an overload protection device for a central transmission scraper-suction machine. Background Art

[0002] The sludge suction machine is used in the horizontal flow sedimentation tank of sewage treatment plants and water plants. It scrapes the sludge settled on the bottom of the tank to the pump suction port, sucks the sludge while driving through the pump, and then discharges the sludge out of the tank. The overload protection devices used for central transmission sludge scrapers on the market are mostly mechanical components combined with electrical components, but the design of the mechanical part is too complicated compared to the new type used in this paper, and the manufacturing cost is relatively high. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide an overload protection device for a central transmission scraper and suction sludge machine. The structure design is simple and easy to assemble, which improves the stability of operation, reduces the manufacturing cost, greatly increases the life of the device, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a central transmission scraper and suction machine overload protection device, comprising a drive seat, a rotating support is installed on the lower surface of the drive seat through a slewing support, a driving assembly for driving the rotating support to rotate is provided on the drive seat, a load-bearing ring is fixed to the center of the upper surface of the rotating support by a screw, and a main shaft is provided in the middle of the load-bearing ring, the upper end of the main shaft passes through and extends to the upper end of the load-bearing ring, and a torsion pin vertically plugged therein is provided at the upper end of the main shaft, and two rectangular grooves for positioning the two ends of the torque pin are provided at one end of the rectangular groove, and an arc groove corresponding to the torque pin is provided, and an adjustment pad is provided on the inner upper surface of the rectangular groove, and the two ends of the torque pin can slide from the inside of the arc groove of the rectangular groove to the upper surface of the adjustment pad, and a proximity switch assembly corresponding to the upper end of the main shaft is provided on the upper surface of the drive seat.

[0005] Furthermore, the adjustment pad is fixedly connected to the load-bearing ring by a countersunk screw, and one end of the adjustment pad is tilted. The adjustment pad with one end tilted can facilitate the movement of one end to its upper surface when the main shaft rotates, thereby driving the main shaft to move upward, so that the upper end of the main shaft can be close to the proximity switch assembly, thereby controlling the drive assembly switch to prevent overload from causing damage to the device.

[0006] Furthermore, the proximity switch assembly includes a Z-shaped bracket fixed on the rotating support, and a proximity switch is fixed on the Z-shaped bracket. When the upper end of the main shaft approaches the proximity switch, the power source is triggered to be cut off. After the power is cut off, the main shaft stops rotating, and the scraper and suction machine no longer has load, so it is protected.

[0007] Furthermore, the drive assembly includes a drive motor installed on a drive seat, a driving gear is fixed to the end of the output shaft of the drive motor, and an external gear meshing with the driving gear is fixed to the outer side of the rotating support. The driving gear can be driven to rotate by the rotation of the drive motor, and the rotating support can be driven to rotate by the transmission of the driving gear and the external gear. The rotation of the rotating support can drive the bearing ring to rotate, and the arc groove on the bearing ring cooperates with the torque pin to drive the main shaft to rotate. When the main shaft resistance is too large, the torque pin climbs to the upper surface of the adjustment pad.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: the driving gear can be driven to rotate by rotating the driving motor, the rotating support can be driven to rotate by the driving gear and the external gear transmission, the bearing ring can be driven to rotate by rotating the rotating support, and the main shaft is driven to rotate by cooperating with the arc groove on the bearing ring and the torque pin. When the resistance of the main shaft is too large, the torque pin climbs to the upper surface of the adjusting pad, and the adjusting pad with one end tilted can facilitate the movement of one end to its upper surface when the main shaft rotates, thereby driving the main shaft to move upward. When the upper end of the main shaft approaches the proximity switch, the power source is triggered to be cut off. After the power is cut off, the main shaft stops rotating, and the scraper and suction mud machine is no longer under load and is therefore protected. The overload protection device of the central transmission scraper and suction mud machine has a simple structural design, is easy to assemble, improves the stability of operation, reduces the manufacturing cost, and greatly improves the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the structure of the utility model;

[0010] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0011] Figure 3 This is a schematic diagram of the top view of the structure of the utility model;

[0012] Figure 4 This is a schematic structural diagram of the torque pin in normal state of the utility model;

[0013] Figure 5 This is a schematic diagram of the torque pin load state structure of the utility model.

[0014] In the figure: 1 drive base, 2 slewing support, 3 rotating support, 4 drive assembly, 41 drive motor, 42 driving gear, 43 external gear, 5 load ring, 6 main shaft, 7 torque pin, 8 rectangular groove, 9 adjustment pad, 10 proximity switch assembly, 101 Z-type bracket, 102 proximity switch. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] See also Figure 1-5The utility model provides a technical solution: a central transmission scraper and suction sludge overload protection device, comprising a driving seat 1, a rotating support 3 is installed on the lower surface of the driving seat 1 through a slewing support 2, a driving assembly 4 is provided on the driving seat 1 for driving the rotating support 3 to rotate, a carrying ring 5 is fixed to the center of the upper surface of the rotating support 3 by a screw, and a main shaft 6 is provided in the middle of the carrying ring 5, the upper end of the main shaft 6 passes through and extends to the upper end of the carrying ring 5, the upper end of the main shaft 6 is provided with a torsion pin 7 vertically plugged therewith, the upper end of the carrying ring 5 is provided with two rectangular grooves 8 for positioning the two ends of the torsion pin 7, and one end of the rectangular groove 8 is provided with An cambered groove corresponding to the torque pin 7 and an adjusting pad 9 are provided on the inner upper surface of the rectangular groove 8. The two ends of the torque pin 7 can slide from the inside of the cambered groove of the rectangular groove 8 to the upper surface of the adjusting pad 9. The height of the torque pin 7 climbing can be adjusted by replacing the adjusting pad 9 of different thicknesses, thereby changing the sensitivity of the overload protection device. A proximity switch assembly 10 corresponding to the upper end of the main shaft 6 is provided on the upper surface of the drive seat 1. The adjusting pad 9 is fixedly connected to the carrying ring 5 by a countersunk screw, and one end of the adjusting pad 9 is tilted. The adjusting pad 9 with one end tilted can facilitate the movement of one end to its upper surface when the main shaft 6 rotates, so as to This can drive the main shaft 6 to move upward, so that the upper end of the main shaft 6 can be close to the proximity switch assembly 10, so as to control the switch of the drive assembly 4 to prevent overload from causing damage to the device. The proximity switch assembly 10 includes a Z-shaped bracket 101 fixed on the rotating support 3, and a proximity switch 102 is fixed on the Z-shaped bracket 101. When the upper end of the main shaft 6 is close to the proximity switch 102, the power source is triggered to be cut off. After the power is cut off, the main shaft 6 stops rotating, and the scraper and suction mud machine no longer has a load, so it is protected. The drive assembly 4 includes a drive motor 41 installed on the drive seat 1, and the output shaft end of the drive motor 41 is fixed with a driving gear 42. An external gear 43 meshing with the driving gear 42 is fixed to the outside of the dynamic support 3. The driving gear 42 can be driven to rotate by rotating the driving motor 41. The driving gear 42 and the external gear 43 can be used to drive the rotating support 3. The bearing ring 5 can be driven to rotate by rotating the rotating support 3. The arc groove on the bearing ring 5 cooperates with the torque pin 7 to drive the main shaft 6 to rotate. When the resistance of the main shaft 6 is too large, the torque pin 7 climbs to the upper surface of the adjustment pad 9. The overload protection device of the central transmission scraper and suction mud machine has a simple structural design, is easy to assemble, improves the stability of operation, reduces the manufacturing cost, and greatly improves the service life of the device.

[0017] During use: the driving motor 41 can be driven to rotate the driving gear 42, and the driving gear 42 and the external gear 43 can be used to drive the rotating support 3 to rotate. The rotating support 3 can be used to drive the bearing ring 5 to rotate, and the arc groove on the bearing ring 5 cooperates with the torque pin 7 to drive the main shaft 6 to rotate. When the resistance of the main shaft 6 is too large, the torque pin 7 climbs to the upper surface of the adjusting pad 9. The adjusting pad 9 with one end tilted can facilitate the movement of one end to its upper surface when the main shaft 6 rotates, thereby driving the main shaft 6 to move upward. When the upper end of the main shaft 6 approaches the proximity switch 102, the power source is triggered to be cut off. After the power is cut off, the main shaft 6 stops rotating, and the scraper and suction mud is no longer under load and is therefore protected. The height of the torque pin 7 climbing can be adjusted by replacing the adjusting pad 9 with different thicknesses, thereby changing the sensitivity of the overload protection device.

[0018] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A central drive sludge scraper overload protection device, comprising a drive seat (1), characterized in that: The lower surface of the driving seat (1) is provided with a rotating support (3) via a slewing support (2). The driving seat (1) is provided with a driving assembly (4) for driving the rotating support (3) to rotate. A bearing ring (5) is fixed to the center of the upper surface of the rotating support (3) via a screw, and a main shaft (6) is provided in the middle of the bearing ring (5). The upper end of the main shaft (6) passes through and extends to the upper end of the bearing ring (5). A torsion pin (7) vertically plugged therein is provided at the upper end of the main shaft (6). The upper end of the carrier ring (5) is provided with two rectangular grooves (8) for positioning the two ends of the torque pin (7), one end of the rectangular groove (8) is provided with an arc groove corresponding to the torque pin (7), and the inner upper surface of the rectangular groove (8) is provided with an adjustment pad (9), and the two ends of the torque pin (7) can slide from the inside of the arc groove of the rectangular groove (8) to the upper surface of the adjustment pad (9), and the upper surface of the drive seat (1) is provided with a proximity switch assembly (10) corresponding to the upper end of the main shaft (6).

2. The overload protection device for a central transmission sludge scraper and suction machine according to claim 1 is characterized in that: The adjustment pad (9) is fixedly connected to the bearing ring (5) via a countersunk screw, and one end of the adjustment pad (9) is arranged at an angle.

3. The overload protection device for a central transmission sludge scraper and suction machine according to claim 1 is characterized in that: The proximity switch assembly (10) comprises a Z-shaped bracket (101) fixed on a rotating support (3), and a proximity switch (102) is fixed on the Z-shaped bracket (101).

4. The overload protection device for a central transmission sludge scraper and suction machine according to claim 1 is characterized in that: The driving assembly (4) comprises a driving motor (41) mounted on a driving seat (1), a driving gear (42) being fixed to the end of an output shaft of the driving motor (41), and an external gear (43) meshing with the driving gear (42) being fixed to the outer side of the rotating support (3).

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