Nylon gear assembly for drum-shaped filter screen driving system

Abstract

The utility model relates to a nylon gear assembly for a drum-shaped filter screen driving system, which belongs to the field of gears and comprises gear teeth and a hub, one end of each gear tooth is provided with a mounting hole in a penetrating manner, the hub is provided with an assembly hole, the hub movably penetrates through the mounting hole, and the gear teeth and the hub are locked through a locking piece. The gear teeth and the hub are assembled to form the complete pinion, compared with a casting forming method, the integral structural strength is higher, the failure rate is lower, in addition, after the gear teeth or the hub is damaged, the damaged gear teeth or the hub can be detached and replaced, the replaceability of parts is improved to a certain degree, and the cost is reduced. And the maintenance cost caused by faults is reduced.

Description

Technical Field

[0001] The utility model relates to a nylon gear assembly for a drum filter driving system, belonging to the field of gears. Background Art

[0002] The drum filter is a widely used device in the seawater filtration system. As the last large-scale filtration device in the defense-in-depth system of the nuclear power plant cold source security system to defend against marine organisms, its performance directly determines the safety of the nuclear power plant cold source. In order to ensure that the drum filter can run smoothly in seawater, the performance of the drive device is particularly important, and the pinion is one of the key components that determine the performance of the drive device.

[0003] The Chinese invention patent with publication number CN115920501A discloses a filter auxiliary drive mechanism, which belongs to the field of nuclear power unit maintenance technology, including: installation box, actuator, drive mechanism and power mechanism; this application redesigns the structure of the auxiliary drive mechanism, so that the filter auxiliary drive mechanism can be installed on the inspection platform opposite to the original drive device of the equipment to drive the drum net gear to rotate, without occupying the normal maintenance area, and there is no need to wait for the bearings and drive gears to complete the maintenance. The maintenance period of the main body is arranged in parallel, which shortens the overall maintenance period and improves the maintenance efficiency. The installation box and the platform are movably connected, and the installation box can be fixed on the platform by fine-tuning the position of the installation box, which ensures the stability of the auxiliary drive mechanism and makes the first gear and the drum net gear mesh stably; the use of a power mechanism to drive the drum net to rotate not only reduces the risk caused by human errors, greatly reduces the safety risk in the work, but also reduces the work intensity, shortens the overhaul period, and further improves the maintenance efficiency. However, the pinion gears in the prior art are often formed by casting the gear teeth and the hub. However, due to the different materials of the gear teeth and the hub (the gear teeth are single-cast nylon and the hub is metal), the combination between the two is often not tight enough, which increases the failure rate of the pinion gear to a certain extent and brings certain risks to the operation of the drive device.

[0004] Therefore, there is a need for a nylon gear assembly for a drum filter drive system to improve the replaceability of parts and components and reduce the maintenance costs caused by failures. Utility Model Content

[0005] The technical problem to be solved by the utility model is: in order to overcome the deficiencies of the prior art, to provide a nylon gear assembly for a drum filter driving system which improves the replaceability of parts and reduces the maintenance cost caused by failures.

[0006] The technical solution adopted by the utility model to solve the above-mentioned problem is: a nylon gear assembly for a drum filter driving system, including gear teeth and a hub, one end of the gear teeth is penetrated by a mounting hole, the hub is provided with an assembly hole, the hub moves through the mounting hole, and the gear teeth and the hub are locked by a locking piece.

[0007] Preferably, the gear teeth and the hub are made of different materials.

[0008] Preferably, the gear teeth are made of single-cast nylon, and the hub is made of metal.

[0009] Preferably, a keyway is provided on the inner wall of the assembly hole.

[0010] Preferably, a flange is provided at one end of the wheel hub, and the gear teeth are connected to the flange via a locking member.

[0011] Preferably, grooves are provided on both end faces of the gear teeth, and the flange is located in one of the grooves.

[0012] Preferably, the movable sleeve on the wheel hub is provided with an end cover, the end cover is located in another groove, and the end cover, the gear teeth and the flange are locked by a locking piece.

[0013] Preferably, the outer side wall of the end cover and the outer side wall of the flange are respectively in the same plane with the two end faces of the gear teeth.

[0014] Preferably, the locking member includes a bolt, a nut and a washer, a first through hole is provided on the gear tooth, a second through hole is provided on the flange, and a third through hole is provided on the end cover, the bolt passes through the third through hole, the first through hole and the second through hole in sequence, the head of the bolt abuts against the outer wall of the end cover, the washer and the nut are both sleeved on the bolt, the nut is threadedly connected to the bolt, the nut and the washer are both located on the side of the flange away from the end cover, the washer is located between the nut and the flange, the washer is fitted with the flange, and the nut abuts against the washer.

[0015] Preferably, the diameters of the first through hole and the second through hole are both equal to the diameter of the bolt.

[0016] Compared with the prior art, the advantages of the utility model are:

[0017] The utility model discloses a nylon gear assembly for a drum filter driving system. The gear teeth and the wheel hub adopt an assembled method to form a complete small gear. Compared with the casting method, the overall structural strength is higher and the failure rate is lower. Moreover, when the gear teeth or the wheel hub are damaged, the damaged gear teeth or the wheel hub can be removed and replaced, which improves the replaceability of parts to a certain extent and reduces the maintenance cost caused by the failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a stereoscopic diagram of a nylon gear assembly for a drum filter driving system of the utility model;

[0019] Figure 2 This is a front view of a nylon gear assembly for a drum filter drive system of the utility model;

[0020] Figure 3 This is a right side view of a nylon gear assembly for a drum filter driving system of the utility model;

[0021] Figure 4 It is a top view of a nylon gear assembly for a drum filter driving system of the utility model;

[0022] Figure 5 for Figure 2 AA direction cross-sectional view;

[0023] Figure 6 is a three-dimensional diagram of the gear teeth;

[0024] Figure 7 is a three-dimensional diagram of the end cap;

[0025] Figure 8 is a three-dimensional diagram of the wheel hub;

[0026] Fig. 9 It is a three-dimensional diagram of the locking member.

[0027] in:

[0028] Gear 1, wheel hub 2, mounting hole 3, locking member 4, assembly hole 5, keyway 6, flange 7, groove 8, end cover 9, first through hole 10, second through hole 11, third through hole 12;

[0029] Bolt 41, nut 42, washer 43. DETAILED DESCRIPTION

[0030] like Figure 1-9As shown, a nylon gear assembly for a drum filter driving system in this embodiment includes a gear 1 and a hub 2, one end of the gear 1 is penetrated with a mounting hole 3, the hub 2 movably passes through the mounting hole 3, the gear 1 and the hub 2 are locked by a plurality of locking members 4, and the plurality of locking members 4 are evenly distributed around the axis of the hub 2, the gear 1 and the hub 2 are made of different materials, the gear 1 and the hub 2 are fixedly connected by the locking members 4 to form a complete pinion, that is, an assembly method is adopted, compared with the casting method, the overall structural strength is higher and the failure rate is lower, and when the gear 1 or the hub 2 is damaged, the damaged gear 1 or the hub 2 can be removed and replaced, which improves the replaceability of parts to a certain extent and reduces the maintenance cost caused by failure;

[0031] The wheel hub 2 is provided with an assembly hole 5, and the inner wall of the assembly hole 5 is provided with a keyway 6. After the gear 1 and the wheel hub 2 are assembled to form a complete pinion, the pinion is installed on the drive shaft in the drum filter drive system through the assembly hole 5, wherein a key is installed in the keyway 6, so that the wheel hub 2 is driven to rotate through the key during the rotation of the drive shaft, that is, the rotation of the pinion is realized;

[0032] A flange 7 is provided at one end of the wheel hub 2, and the gear 1 is connected to the flange 7 via a locking member 4;

[0033] Grooves 8 are provided on both end surfaces of the gear teeth 1, and the flange 7 is located in one of the grooves 8;

[0034] The wheel hub 2 is provided with an end cover 9, which is located in another groove 8. The end cover 9, the gear 1 and the flange 7 are locked by a locking member 4.

[0035] The outer wall of the end cover 9 and the outer wall of the flange 7 are respectively in the same plane as the two end faces of the gear tooth 1;

[0036] The locking member 4 includes a bolt 41, a nut 42 and a washer 43. The gear tooth 1 is provided with a plurality of first through holes 10, the flange 7 is provided with a plurality of second through holes 11, and the end cover 9 is provided with a plurality of third through holes 12. The plurality of first through holes 10, the plurality of second through holes 11 and the plurality of third through holes 12 all correspond to the plurality of locking members 4 one by one. The bolt 41 passes through the third through hole 12, the first through hole 10 and the second through hole 11 in sequence. The head of the bolt 41 abuts against the outer side wall of the end cover 9. The washer 43 and the nut 42 are both sleeved on the bolt 41. The nut 42 is threadedly connected with the bolt 41. The nut 42 and the washer 43 are both located on the side of the flange 7 away from the end cover 9. The washer 43 is located between the nut 42 and the flange 7. The washer 43 fits the flange 7, and the nut 42 abuts against the washer 43.

[0037] The diameters of the first through hole 10 and the second through hole 11 are equal to the diameter of the bolt 41 to prevent relative rotation between the gear 1 and the hub 2;

[0038] The gear teeth 1 are made of single-cast nylon, and the hub 2 is made of metal;

[0039] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. A nylon gear assembly for a drum filter driving system, comprising gear teeth (1) and a hub (2), characterized in that: One end of the gear tooth (1) is provided with a mounting hole (3), the wheel hub (2) is provided with an assembly hole (5), the wheel hub (2) is movable through the mounting hole (3), and the gear tooth (1) and the wheel hub (2) are locked by a locking member (4).

2. A nylon gear assembly for a drum filter drive system according to claim 1, characterized in that: The gear teeth (1) and the wheel hub (2) are made of different materials.

3. A nylon gear assembly for a drum filter drive system according to claim 2, characterized in that: The material of the gear teeth (1) is single-cast nylon, and the material of the wheel hub (2) is metal.

4. The nylon gear assembly for a drum filter driving system according to claim 1, characterized in that: A keyway (6) is provided on the inner wall of the assembly hole (5).

5. The nylon gear assembly for a drum filter driving system according to claim 1, characterized in that: A flange (7) is provided at one end of the wheel hub (2), and the gear teeth (1) are connected to the flange (7) via a locking member (4).

6. A nylon gear assembly for a drum filter driving system according to claim 5, characterized in that: Grooves (8) are provided on both end faces of the gear teeth (1), and the flange (7) is located in one of the grooves (8).

7. A nylon gear assembly for a drum filter driving system according to claim 6, characterized in that: The wheel hub (2) is provided with an end cover (9) on a movable sleeve. The end cover (9) is located in another groove (8). The end cover (9), the gear (1) and the flange (7) are locked by a locking member (4).

8. The nylon gear assembly for a drum filter driving system according to claim 7, characterized in that: The outer side wall of the end cover (9) and the outer side wall of the flange (7) are respectively in the same plane as the two end faces of the gear tooth (1).

9. The nylon gear assembly for a drum filter driving system according to claim 7, characterized in that: The locking member (4) comprises a bolt (41), a nut (42) and a washer (43); the gear tooth (1) is provided with a first through hole (10); the flange (7) is provided with a second through hole (11); the end cover (9) is provided with a third through hole (12); the bolt (41) passes through the third through hole (12), the first through hole (10) and the second through hole (11) in sequence; the head of the bolt (41) is in contact with the end cover (9); The outer wall of the flange (7) is abutted against the outer wall of the flange (7), the washer (43) and the nut (42) are both sleeved on the bolt (41), the nut (42) is threadedly connected to the bolt (41), the nut (42) and the washer (43) are both located on the side of the flange (7) away from the end cover (9), the washer (43) is located between the nut (42) and the flange (7), the washer (43) is in contact with the flange (7), and the nut (42) and the washer (43) are abutted against each other.

10. A nylon gear assembly for a drum filter driving system according to claim 9, characterized in that: The hole diameters of the first through hole (10) and the second through hole (11) are both equal to the diameter of the bolt (41).

Images