Rail walking wheel assembly and rail cable-stayed submersible pump

Abstract

The utility model discloses a track walking wheel assembly and a track cable-stayed submersible pump. The track walking wheel assembly comprises a wheel frame, a wheel shaft, a walking wheel, a bearing, bearing end covers and a sealing pressing plate, the walking wheel is assembled on the wheel shaft through the bearing, the two sides of the walking wheel are fixed through the bearing end covers, the inner sides of the bearing end covers abut against bearing outer rings for axial positioning, and first sealing rings are arranged between the bearing end covers and the walking wheel; a second sealing ring is arranged between the bearing end cover and the wheel axle; a third sealing ring is arranged between the sealing pressing plate and the bearing end cover, and the second sealing ring and the third sealing ring are arranged in series in the axial direction of the wheel axle to jointly form an axial sealing combination for preventing liquid from invading the bearing cavity along the surface of the axle. By means of the triple sealing design, the problem that the bearing is rusted and stuck due to water inflow is solved, smoothness and reliability of movement of the submersible pump on the rail are guaranteed, the service life of equipment is prolonged, and maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of submersible pump equipment technology, specifically a track-mounted wheel assembly and a track-mounted inclined submersible pump. Background Technology

[0002] Inclined-coupled submersible pumps, as efficient drainage or water supply devices, are often used in conjunction with track systems. Wheel assemblies enable flexible movement and positioning of the pump body along the track, facilitating installation, inspection, and maintenance. Currently, these track-mounted wheel assemblies typically consist of wheels, axles, and bearings. However, existing wheel assemblies suffer from deficiencies in sealing design, lacking effective waterproof sealing measures for their bearing cavities. When the submersible pump operates underwater or in humid track environments, external moisture easily penetrates the bearing cavity, leading to bearing corrosion, jamming, and ultimately, sluggish wheel rotation or even complete seizure. This problem severely affects the smooth movement of the submersible pump on the track, potentially preventing the equipment from being pulled out of the water for maintenance, thus reducing the equipment's reliability and service life. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides a track-running wheel assembly that can effectively seal and prevent water ingress and corrosion of the bearing.

[0004] This utility model provides a track-moving wheel assembly, including a wheel frame, a wheel axle, a moving wheel, and a bearing. The inner ring of the bearing is fixed to the wheel axle. The moving wheel has a through hole at its center, and the outer ring of the bearing is fitted into the through hole. Bearing end caps are symmetrically arranged on both sides of the moving wheel. The bearing end caps are fixedly connected to the moving wheel, and their inner end faces abut against the end faces of the bearing outer rings to position the bearing outer rings axially. A first sealing ring is provided between the bearing end caps and the moving wheel. It also includes sealing pressure plates respectively arranged on both sides. The sealing pressure plates are sleeved on the wheel axle and fixedly connected to the corresponding bearing end caps. A second sealing ring is provided between the bearing end caps and the surface of the wheel axle. A third sealing ring is provided between the sealing pressure plates and the bearing end caps. The second and third sealing rings are connected in series axially along the wheel axle to form an axial sealing assembly that prevents liquid from migrating along the surface of the wheel axle into the bearing cavity. The two ends of the wheel axle are used to connect to the wheel frame.

[0005] Furthermore, the inner ring of the bearing is secured by a shoulder and a locking nut and a retaining washer located at the end of the wheel axle.

[0006] Furthermore, the bearing end cover is fixedly connected to the end face of the traveling wheel by fastening bolts, and the sealing pressure plate is fixedly connected to the end face of the bearing end cover by fastening bolts.

[0007] Furthermore, the first sealing ring, the second sealing ring, and the third sealing ring are all O-rings.

[0008] This utility model also provides a track-mounted inclined submersible pump, including a submersible pump body and a track-mounted wheel assembly as described above. The wheel frame is connected to the submersible pump body or to a mounting base for mounting the submersible pump body.

[0009] The beneficial effects of this utility model are as follows:

[0010] (1) By setting the first, second and third sealing rings between the bearing end cover and the traveling wheel, between the bearing end cover and the wheel axle, and between the sealing pressure plate and the bearing end cover on the same side, the present invention forms a multi-layered static sealing defense line that works together to completely seal the bearing cavity. This effectively blocks the path of external liquid migrating to the bearing cavity along the surface of the wheel axle, ensuring that the bearing remains lubricated and free from corrosion in a humid or underwater environment. This solves the problem of difficulty in moving the equipment due to bearing jamming, makes the traveling wheel roll smoothly on the track, reduces the traction force required for the submersible pump to move along the track or be pulled out of the water, and improves the controllability and positioning accuracy of the equipment.

[0011] (2) The entire sealing structure is integrated inside the wheel and fixed by the combination of bearing end cover and sealing pressure plate. The structure is compact and rigid. Each sealing ring is assembled firmly and is not easy to fail due to vibration or long-term use, which ensures the durability of the sealing effect and the reliability of the entire component under complex working conditions.

[0012] (3) It significantly extends the service life of the walking wheel assembly and even the entire pump station equipment, reduces the frequency of downtime and maintenance caused by bearing failure, and reduces the total life cycle operation and maintenance cost of the equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the track-walking wheel assembly of this utility model.

[0014] Figure 2 This is a cross-sectional structural diagram of the track-walking wheel assembly of this utility model.

[0015] Figure 3 This is a partial exploded view of the track-walking wheel assembly of this utility model.

[0016] In the diagram: 1. Wheel frame; 2. Wheel axle; 3. Wheel; 4. Bearing; 5. Locking nut and locking washer; 6. Bearing end cover; 7. Sealing plate; 8. First sealing ring; 9. Second sealing ring; 10. Third sealing ring. Detailed Implementation

[0017] To facilitate understanding of this utility model, it will be described more comprehensively and in detail below with reference to the accompanying drawings and preferred embodiments. However, the scope of protection of this utility model is not limited to the following specific embodiments.

[0018] like Figures 1-3 As shown, this utility model embodiment provides a track-moving wheel assembly. The assembly mainly includes a wheel frame 1, a wheel axle 2, a moving wheel 3, a bearing 4, a bearing end cover 6, a sealing pressure plate 7, and multiple sealing rings.

[0019] The two ends of the wheel axle 2 are mounted on the wheel frame 1. The inner ring of the bearing 4 is axially fixed by the axle shoulder, locking nut, and retaining washer 5. A through hole is machined in the center of the traveling wheel 3, and the outer ring of the bearing 4 is assembled in the through hole. Bearing end caps 6 are symmetrically arranged on both sides of the traveling wheel 3. In this embodiment, the bearing end caps 6 are fixedly connected to the end face of the traveling wheel 3 by fastening bolts. When the bearing end caps 6 are installed in place, their inner end face just abuts against the end face of the outer ring of the bearing 4, thereby achieving axial positioning of the outer ring of the bearing.

[0020] To achieve the crucial sealing function, this invention employs multiple seals: First, a first sealing ring 8 is provided between the mating surfaces of the bearing end cover 6 and the traveling wheel 3. This first sealing ring 8 can be located at the end face joint of the two, or at the radial joint of the bearing end cover 6 and the inner wall of the through hole of the traveling wheel 3. Its main function is to seal the gap between the traveling wheel 3 and the bearing end cover 6.

[0021] Secondly, a second sealing ring 9 is provided between the center hole of the bearing end cover 6 and the surface of the wheel axle 2. Finally, it also includes sealing pressure plates 7 respectively disposed on both sides, the sealing pressure plates 7 being sleeved on the wheel axle 2 and fixedly connected to the outer end face of the corresponding bearing end cover 6 by fastening bolts. A third sealing ring 10 is provided between the mating surfaces of the sealing pressure plates 7 and the bearing end cover 6.

[0022] The second sealing ring 9 and the third sealing ring 10 are arranged sequentially along the axial direction of the wheel axle 2 to form a series sealing structure. These two seals together constitute an axial sealing combination, which blocks external liquids (such as water) from penetrating along the surface of the wheel axle 2, thereby effectively preventing them from entering the bearing cavity surrounded by the sealing pressure plate 7, bearing end cover 6, etc.

[0023] In this embodiment, the first sealing ring 8, the second sealing ring 9, and the third sealing ring 10 are preferably O-ring rubber sealing rings to ensure good elasticity and sealing effect.

[0024] Based on the same inventive concept, this utility model also provides a track-mounted inclined submersible pump. The submersible pump includes a pump body and the aforementioned track-mounted wheel assembly. The wheel frame 1 is directly connected to the pump body, or connected to a mounting base for installing and supporting the pump body, thereby enabling the entire submersible pump device to move smoothly and stably on the track via the wheel assembly.

[0025] The assembly process of this utility model is briefly described as follows: First, the inner ring of the bearing 4 is fixed to the wheel axle 2, and then the traveling wheel 3 is assembled with the outer ring of the bearing 4. Next, the bearing end cap 6 with the second sealing ring 9 is fitted onto the wheel axle 2 and fixed to both sides of the traveling wheel 3; at this time, the first sealing ring 8 has been compressed. Then, the sealing pressure plate 7 with the third sealing ring 10 is fitted onto the wheel axle 2 and tightened onto the bearing end cap 6, thus completing the sealed assembly of the entire component. Finally, both ends of the wheel axle 2 are installed onto the wheel frame 1.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A track-mounted wheel assembly, comprising a wheel frame (1), a wheel axle (2), a track wheel (3), and a bearing (4), characterized in that: The inner ring of the bearing (4) is fixed to the wheel axle (2); The center of the walking wheel (3) is provided with a through hole, and the outer ring of the bearing (4) is assembled in the through hole; The two sides of the walking wheel (3) are symmetrically provided with bearing end caps (6). The bearing end caps (6) are fixedly connected to the walking wheel (3), and their inner end face abuts against the end face of the outer ring of the bearing (4) so ​​that the outer ring of the bearing (4) is positioned in the axial direction. A first sealing ring (8) is provided between the bearing end cover (6) and the walking wheel (3). It also includes sealing plates (7) respectively disposed on both sides, the sealing plates (7) being sleeved on the wheel axle (2) and fixedly connected to the corresponding bearing end cap (6); A second sealing ring (9) is provided between the bearing end cover (6) and the surface of the wheel axle (2), and a third sealing ring (10) is provided between the sealing pressure plate (7) and the bearing end cover (6). The second sealing ring (9) and the third sealing ring (10) are connected in series in the axial direction of the wheel axle (2) to form an axial sealing combination that prevents liquid from migrating along the surface of the wheel axle (2) to the bearing (4) cavity. The two ends of the wheel axle (2) are used to connect to the wheel frame (1).

2. The track-walking wheel assembly as described in claim 1, characterized in that: The inner ring of the bearing (4) is fixed by a shoulder and a locking nut and a stop washer (5) located at the end of the wheel axle (2).

3. The track-walking wheel assembly as described in claim 1, characterized in that: The bearing end cover (6) is fixedly connected to the end face of the walking wheel (3) by fastening bolts, and the sealing plate (7) is fixedly connected to the end face of the bearing end cover (6) by fastening bolts.

4. The track-walking wheel assembly as described in claim 1, characterized in that: The first sealing ring (8), the second sealing ring (9) and the third sealing ring (10) are all O-rings.

5. A track-mounted inclined submersible pump, characterized in that, Includes a submersible pump body and a track-walking wheel assembly as described in any one of claims 1 to 4, wherein the wheel frame (1) is connected to the submersible pump body or to a mounting base for mounting the submersible pump body.

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