Torque protection device for driving reduction gearbox of mud scraper

Abstract

The utility model belongs to the field of torque protection devices, and particularly relates to a mud scraper driving reduction gearbox torque protection device which comprises a reduction gearbox, a protection cover is fixedly connected to the outer side of an output shaft of the reduction gearbox, a protection shaft is in contact with the side, away from the reduction gearbox, of the protection cover, and a supporting plate is installed on the outer side of the protection shaft through a bearing. An expansion mechanism is arranged on the reduction gearbox, a groove ring is fixedly connected to the interior of the protection cover, and a fixing strip is fixedly connected to the outer side of the protection shaft. Due to the fact that the groove ring, the arc block, the springs and the like are additionally arranged on the reduction gearbox, when the pushing force of the groove ring to the arc block is larger than the compression force of the slope block to the second spring in the using process, after the slope block moves, the first spring which is compressed originally resets, and the arc block can be driven to be separated from the groove ring. Therefore, the protective cover can idle, and the situation that the reduction gearbox and the motor are damaged when the torque is too large is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of torque protection devices, specifically a torque protection device for a sludge scraper drive gearbox. Background Technology

[0002] A sludge scraper is a machine used to remove sludge from riverbeds. It is used in large-diameter circular sedimentation tanks in urban sewage treatment plants, waterworks, and industrial wastewater treatment plants to remove sludge settled at the bottom and skim off scum from the surface. When driving the sludge scraper, a gearbox can be used to increase the motor's driving torque. However, in existing technology, if the scraper blades are obstructed during gearbox operation, the gearbox's output shaft may not rotate, resulting in excessive torque on the output shaft and potential motor damage. Therefore, improvements to the existing technology are needed. Utility Model Content

[0003] The purpose of this invention is to provide a torque protection device for the reducer gearbox of a sludge scraper, which solves the problem that the motor is easily damaged when the output shaft torque of the reducer gearbox is too large.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a torque protection device for a sludge scraper drive gearbox, comprising a gearbox, a protective cover fixedly connected to the outer side of the output shaft of the gearbox, a protective shaft contacting the side of the protective cover away from the gearbox, a support plate mounted on the outer side of the protective shaft via a bearing, an expansion mechanism provided on the gearbox, a grooved ring fixedly connected inside the protective cover, a fixing strip fixedly connected to the outer side of the protective shaft, a connecting rod slidably connected inside the fixing strip, a snap-fit ​​plate fixedly connected to the end of the connecting rod away from the grooved ring, an arc seat fixedly connected to the end of the connecting rod near the grooved ring, a spring one provided on the outer side of the connecting rod, a fixing cover fixedly connected to the outer side of the protective shaft, an inclined block slidably connected inside the fixing cover, and a spring two provided inside the fixing cover.

[0005] Preferably, a coupling is fixedly connected to the outer side of the protective shaft, and the arc seat is engaged with the groove ring. The coupling can connect to the input shaft of the sludge scraper.

[0006] Preferably, one end of the spring is fixedly connected to the snap-fit ​​plate, and the other end of the spring is fixedly connected to the fixing strip. The spring can automatically reset the snap-fit ​​plate through its elastic force.

[0007] Preferably, one end of the second spring is fixedly connected to the fixed cover, and the other end of the second spring is fixedly connected to the inclined block. The inclined block is slidably connected to the snap-fit ​​plate, and the second spring can support the inclined block with its elastic force.

[0008] Preferably, the expansion mechanism includes a fixed frame, the fixed frame is fixedly connected to the outside of the gearbox, a screw is installed inside the fixed frame through a bearing, and a guide frame is fixedly connected to the outside of the support plate. The screw can drive the support plate to move through the threaded engagement with the support plate.

[0009] Preferably, the screw is threadedly connected to the support plate, and a knob is fixedly connected to the end of the screw away from the fixing frame, which can drive the screw to rotate.

[0010] Preferably, a guide rod is fixedly connected to the outer side of the fixing frame, and the guide rod is slidably connected to the guide frame. The guide rod can guide the movement of the support plate through the guide frame.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model adds a grooved ring, an arc block, and a spring to the gearbox. During use, when the pushing force of the grooved ring on the arc block is greater than the compression force of the inclined block on the spring, the inclined block moves and the originally compressed spring returns to its original position, which can drive the arc block to disengage from the grooved ring. This allows the protective cover to idle, preventing damage to the gearbox and motor caused by excessive torque.

[0013] 2. This utility model adds a fixed frame, screw and guide rod to the gearbox. After the arc block is disengaged from the groove ring, the protective shaft can be driven to disengage from the protective cover through the threaded engagement between the screw and the support plate, which makes it easier for the arc block to be reset. Attached Figure Description

[0014] Figure 1 This is a perspective view of the overall structure of this utility model;

[0015] Figure 2 This utility model Figure 1 A magnified 3D view of the protective cover;

[0016] Figure 3 For the present utility model Figure 1 Enlarged cross-sectional view of the protective cover;

[0017] Figure 4 For the present utility model Figure 3 Enlarged view of the A-section structure;

[0018] Figure 5 For the present utility model Figure 4 A magnified 3D view of the arc block.

[0019] In the diagram: 1. Gearbox; 2. Protective cover; 3. Protective shaft; 4. Support plate; 5. Extension mechanism; 6. Coupling; 7. Groove ring; 8. Fixing strip; 9. Connecting rod; 10. Snap-fit ​​plate; 11. Arc seat; 12. Spring 1; 13. Fixing cover; 14. Inclined block; 15. Spring 2; 51. Fixing bracket; 52. Screw; 53. Guide bracket; 54. Knob; 55. Guide rod. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The torque protection device for the sludge scraper drive gearbox includes a gearbox 1. A protective cover 2 is fixedly connected to the outside of the output shaft of the gearbox 1. A protective shaft 3 is in contact with the side of the protective cover 2 away from the gearbox 1. A support plate 4 is installed on the outside of the protective shaft 3 via a bearing. An expansion mechanism 5 is provided on the gearbox 1. A grooved ring 7 is fixedly connected inside the protective cover 2. A fixing strip 8 is fixedly connected to the outside of the protective shaft 3. A connecting rod 9 is slidably connected inside the fixing strip 8. A snap-fit ​​plate 10 is fixedly connected to the end of the connecting rod 9 away from the grooved ring 7. An arc seat 11 is fixedly connected to the end of the connecting rod 9 near the grooved ring 7. A spring 12 is provided on the outside of the connecting rod 9. A fixing cover 13 is fixedly connected to the outside of the protective shaft 3. An inclined block 14 is slidably connected inside the fixing cover 13. A spring 2 15 is provided inside the fixing cover 13.

[0022] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 A coupling 6 is fixedly connected to the outer side of the protective shaft 3. The arc seat 11 is engaged with the groove ring 7. The coupling 6 can connect to the input shaft of the sludge scraper. One end of the spring 12 is fixedly connected to the snap-fit ​​plate 10, and the other end of the spring 12 is fixedly connected to the fixing strip 8. The spring 12 can automatically reset the snap-fit ​​plate 10 through its elastic force. One end of the spring 2 15 is fixedly connected to the fixing cover 13, and the other end of the spring 2 15 is fixedly connected to the inclined block 14. The inclined block 14 is slidably connected to the snap-fit ​​plate 10. The spring 2 15 can support the inclined block 14 through its elastic force.

[0023] Please see Figure 1 The extension mechanism 5 includes a fixed frame 51. The fixed frame 51 is fixedly connected to the outside of the gearbox 1. A screw 52 is installed inside the fixed frame 51 through a bearing. A guide frame 53 is fixedly connected to the outside of the support plate 4. The screw 52 can drive the support plate 4 to move through the threaded engagement with the support plate 4. The screw 52 and the support plate 4 are connected by threads. A knob 54 is fixedly connected to the end of the screw 52 away from the fixed frame 51. The knob 54 can drive the screw 52 to rotate. A guide rod 55 is fixedly connected to the outside of the fixed frame 51. The guide rod 55 is slidably connected to the guide frame 53. The guide rod 55 can guide the movement of the support plate 4 through the guide frame 53.

[0024] The specific implementation process of this utility model is as follows: When the rotational torque of the protective shaft 3 is too large, the protective cover 2 rotates. Due to the excessive torque of the protective shaft 3, the groove ring 7 inside the protective cover 2 causes the arc seat 11 to move downward. During the downward movement of the arc seat 11, the connecting rod 9 can drive the snap plate 10 to move downward. During the downward movement of the snap plate 10, the inclined surface of the inclined block 14 can push the inclined block 14 to move into the interior of the fixed cover 13 and compress the second spring 15. When the snap plate 10 moves past the inclined block 14, the originally compressed spring 12 is reset. The spring 12 can use its elasticity to drive the arc seat 11 to disengage from the groove ring 7, thereby allowing the protective cover 2 to rotate freely, avoiding damage to the gearbox 1 and motor due to excessive torque.

[0025] After the arc seat 11 is overloaded, turn the knob 54. The knob 54 drives the screw 52 to rotate. During the rotation, the screw 52 can drive the support plate 4 to move through the threaded engagement with the support plate 4. During the movement, the support plate 4 can drive the protective shaft 3 to disengage from the protective cover 2. After the arc seat 11 is moved out of the inside of the protective cover 2, the arc seat 11 can be easily reset.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A torque protection device for a sludge scraper drive gearbox, comprising a gearbox (1), characterized in that: A protective cover (2) is fixedly connected to the outer side of the output shaft of the gearbox (1). A protective shaft (3) is in contact with the side of the protective cover (2) away from the gearbox (1). A support plate (4) is installed on the outer side of the protective shaft (3) through a bearing. An expansion mechanism (5) is provided on the gearbox (1). A grooved ring (7) is fixedly connected inside the protective cover (2). A fixing strip (8) is fixedly connected to the outer side of the protective shaft (3). A connecting rod (9) is slidably connected inside the fixing strip (8). A snap-fit ​​plate (10) is fixedly connected to the end of the connecting rod (9) away from the grooved ring (7). An arc seat (11) is fixedly connected to the end of the connecting rod (9) close to the grooved ring (7). A spring (12) is provided on the outer side of the connecting rod (9). A fixing cover (13) is fixedly connected to the outer side of the protective shaft (3). A inclined block (14) is slidably connected inside the fixing cover (13). A spring (15) is provided inside the fixing cover (13).

2. The torque protection device for the sludge scraper drive reduction gearbox according to claim 1, characterized in that: A coupling (6) is fixedly connected to the outer side of the protective shaft (3), and the arc seat (11) is engaged with the groove ring (7).

3. The torque protection device for the sludge scraper drive reduction gearbox according to claim 1, characterized in that: One end of the spring (12) is fixedly connected to the snap-fit ​​plate (10), and the other end of the spring (12) is fixedly connected to the fixing strip (8).

4. The torque protection device for the sludge scraper drive reduction gearbox according to claim 1, characterized in that: One end of the second spring (15) is fixedly connected to the fixed cover (13), and the other end of the second spring (15) is fixedly connected to the inclined block (14). The inclined block (14) is slidably connected to the snap plate (10).

5. The torque protection device for the sludge scraper drive reduction gearbox according to claim 1, characterized in that: The extension mechanism (5) includes a fixed frame (51), the fixed frame (51) is fixedly connected to the outside of the gearbox (1), the screw (52) is installed inside the fixed frame (51) through a bearing, and the guide frame (53) is fixedly connected to the outside of the support plate (4).

6. The torque protection device for the sludge scraper drive reduction gearbox according to claim 5, characterized in that: The screw (52) is connected to the support plate (4) by a thread, and a knob (54) is fixedly connected to one end of the screw (52) away from the fixing frame (51).

7. The torque protection device for the sludge scraper drive reduction gearbox according to claim 5, characterized in that: A guide rod (55) is fixedly connected to the outside of the fixed frame (51), and the guide rod (55) is slidably connected to the guide frame (53).

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