Built-in tail roller bearing sealing device of elevator

Abstract

The utility model discloses a built-in tail roller bearing sealing device of an elevator, which comprises a bearing seat, a sealing piece is correspondingly arranged at one end of the bearing seat, a sealing pressing plate is arranged at the other end of the sealing piece, and a felt pressing plate is arranged at the other end of the sealing pressing plate. The sealing pressing plate, the felt pressing plate and the sealing piece are in threaded connection with a plurality of pressing plate bolts, and the elevator tail shaft is arranged in the bearing seat and the sealing piece. A novel bearing sealing device is additionally arranged under the condition of not changing any accessory of a roller bearing seat at the tail part of the elevator, and the device is split and convenient to install. The scheme is simple and easy to implement, the transformation cost is low, and the effect is ideal; the problem that a roller bearing at the tail of the elevator is damaged due to frequent dust entering is effectively solved, the service life of equipment is prolonged, the post workload is reduced, and wide popularization significance is achieved.

Description

Technical Field

[0001] The utility model relates to the field of elevators, in particular to a built-in tail roller bearing sealing device of an elevator. Background Art

[0002] The tail roller of the BW belt hoist used by our company adopts a built-in bearing seat, and the tail rolling bearing adopts a labyrinth plus skeleton oil seal sealing method. During the production process, the material inevitably enters the labyrinth seal, causing the seal to wear and dust to enter more seriously. Another point is that due to the high temperature of the material, the skeleton oil seal ages and fails, and the bearing is easily damaged by dust. As a result, the labyrinth seal, skeleton oil seal, and bearing at the tail of the hoist need to be frequently inspected and replaced, affecting the safe operation of the equipment. In order to solve this situation, the company has successfully designed a set of built-in tail roller bearing sealing device for the hoist after many experiments. Utility Model Content

[0003] The utility model aims to provide a sealing device for a built-in tail roller bearing of a hoist, which solves the problem in the prior art that the built-in tail roller bearing of the hoist is frequently damaged during use.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme: a tail roller bearing sealing device built into the hoist includes a bearing seat, one end of the bearing seat is correspondingly provided with a sealing member, the other end of the sealing member is provided with a sealing pressure plate, and the other end of the sealing pressure plate is provided with a felt pressure plate;

[0005] A plurality of pressure plate bolts are threadedly connected on the sealing pressure plate, the felt pressure plate and the sealing member, and a hoist tail shaft is arranged inside the bearing seat and the sealing member.

[0006] As a further description of the above technical solution: a tail bearing is arranged inside the bearing seat, and the inner ring of the tail bearing is connected to the tail shaft of the hoist.

[0007] As a further description of the above technical solution: sealing fixing ear seats are fixedly connected to the outer sides of the sealing member, and positioning holes are provided on the sealing fixing ear seats.

[0008] As a further description of the above technical solution: the sealing fixing ear seat and the bearing seat are threadedly connected with fixing bolts.

[0009] As a further description of the above technical solution: a sealing guard plate is arranged at the upper end of the sealing member.

[0010] The utility model has the following beneficial effects:

[0011] 1. Compared with the existing technology, the tail roller bearing sealing device built into the hoist transforms the original simple labyrinth plus skeleton oil seal method at the tail of the hoist, and installs a new type of bearing sealing device without changing any accessories of the tail roller bearing seat of the hoist. This device is split and easy to install. This solution is simple and easy to implement, with low transformation cost and ideal effect; it effectively solves the problem of frequent dust damage to the tail roller bearing of the hoist, improves the service life of the equipment, reduces the workload of the post, and has a wide range of promotion significance.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0014] Figure 1 It is a schematic diagram of the overall installation structure of the utility model.

[0015] Figure 2 It is a front view of the utility model.

[0016] Figure 3 It is a schematic diagram of the sealing structure of the utility model.

[0017] Figure 4 It is a top view of the sealing element of the present utility model.

[0018] Legend:

[0019] 1. Tail bearing; 2. Hoist tail shaft; 3. Bearing seat; 4. Pressure plate bolt; 5. Felt pressure plate; 6. Sealing pressure plate; 7. Sealing element; 8. Fixing bolt; 9. Sealing fixing ear seat; 10. Positioning hole; 11. Sealing guard plate. DETAILED DESCRIPTION

[0020] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0021] Reference Figure 1-4The utility model provides an embodiment of a hoist with a built-in tail roller bearing sealing device, including a bearing seat 3, a sealing member 7 is correspondingly arranged at one end of the bearing seat 3, a sealing pressure plate 6 is arranged at the other end of the sealing pressure plate 7, and a felt pressure plate 5 is arranged at the other end of the sealing pressure plate 6. The felt seal and the pressure plate are used to block the material at the rotating part of the roller shaft. The opening design at the bottom allows the material entering the sealing device to be discharged in time by gravity;

[0022] Several pressure plate bolts 4 are threadedly connected on the sealing pressure plate 6, the felt pressure plate 5 and the sealing member 7, and the hoist tail shaft 2 is arranged inside the bearing seat 3 and the sealing member 7. The sealing pressure plate 6 and the felt pressure plate 5 can be installed on the sealing member 7 through the pressure plate bolts 4 to ensure their stable use;

[0023] The tail bearing 1 is arranged inside the bearing seat 3, and the inner ring of the tail bearing 1 is connected to the tail shaft 2 of the hoist. By arranging the tail bearing 1, it can be ensured that the tail shaft 2 of the hoist can rotate stably during use, thereby improving the stability of the entire bearing seat 3 during use;

[0024] The outer sides of the seal 7 are fixedly connected with sealing fixing ear seats 9, and positioning holes 10 are opened on the sealing fixing ear seats 9. The sealing fixing ear seats 9 and the bearing seat 3 are threadedly connected with fixing bolts 8. The sealing fixing ear seats 9 are aligned with the upper end of the bearing seat 3, and the seal 7 is installed on the bearing seat 3 through the fixing bolts 8 to realize the split installation operation;

[0025] A sealing guard plate 11 is arranged at the upper end of the seal 7, and the upper sealing guard plate 6 can prevent the material from entering through the joints. This scheme is simple and easy to implement, with low modification cost and ideal effect. It effectively solves the problem of frequent dust ingress and damage to the drum bearing at the tail of the elevator, improves the service life of the equipment, reduces job workload, and has broad promotion significance.

[0026] Working principle: When the device is used, first install the sealing plate 6 and the felt plate 5 on one end of the seal 7 in sequence, and lock them through the outer plate bolt 4, then match the sealing fixed ear seat 9 with the upper end of the bearing seat 3, and install the seal 7 on the bearing seat 3 through the fixing bolt 8, and finally install the tail shaft 2 of the elevator inside the bearing seat 3 and the seal 7. When the equipment is running, the material entering the elevator will inevitably splash, and this device can effectively block the material. The upper sealing guard plate 6 can prevent the material from entering through the joint, and the rotating part of the drum shaft adopts the felt seal and the plate to jointly block the material. The opening design at the bottom allows the material entering the sealing device to be discharged in time by gravity. This device can effectively solve the problem of material entering the labyrinth seal to reduce wear, and the skeleton oil seal also extends its service life due to the non-direct contact with high-temperature materials. This ensures that the material cannot enter the bearing and greatly extends its life.

[0027] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A tail drum bearing sealing device built into a hoist, comprising a bearing seat (3), characterized in that: A sealing member (7) is correspondingly arranged at one end of the bearing seat (3), a sealing pressure plate (6) is arranged at the other end of the sealing pressure plate (7), and a felt pressure plate (5) is arranged at the other end of the sealing pressure plate (6); A plurality of pressure plate bolts (4) are threadedly connected to the sealing pressure plate (6), the felt pressure plate (5) and the sealing member (7), and a hoist tail shaft (2) is arranged inside the bearing seat (3) and the sealing member (7).

2. The hoist built-in tail drum bearing sealing device according to claim 1, characterized in that: A tail bearing (1) is arranged inside the bearing seat (3), and an inner ring of the tail bearing (1) is connected to the tail shaft (2) of the hoist.

3. The hoist built-in tail drum bearing sealing device according to claim 1, characterized in that: The outer sides of the sealing member (7) are fixedly connected with sealing fixing ear seats (9), and the sealing fixing ear seats (9) are provided with positioning holes (10).

4. The hoist built-in tail drum bearing sealing device according to claim 3, characterized in that: The sealing fixing ear seat (9) and the bearing seat (3) are threadedly connected with fixing bolts (8).

5. The hoist built-in tail drum bearing sealing device according to claim 1, characterized in that: A sealing guard plate (11) is provided at the upper end of the sealing member (7).

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