Protective cover of elevator pulley

Abstract

The utility model belongs to the technical field of elevator accessories, and particularly relates to a protective cover of an elevator pulley, which comprises a mounting frame, a pulley is rotatably connected inside the mounting frame, a steel wire rope is slidably connected outside the pulley, and symmetrical limiting mechanisms are arranged on the front side and the rear side of the mounting frame. Symmetrical protective covers are fixed to the upper ends of the mounting frame and the pulley through limiting mechanisms, rope penetrating cavities are formed in the left ends and the right ends of the upper sides of the two protective covers correspondingly, and symmetrical monitoring films are arranged on the two sides of the steel wire rope through the fixing mechanisms, so that the monitoring films do not make direct contact with the steel wire rope, and the distance between the monitoring films and the steel wire rope is 1-2 cm; when the steel wire rope is broken in the using process, the tilted broken steel wire rope can directly scratch the monitoring film, so that when maintenance personnel inspects, the situation that the steel wire rope may be broken can be conveniently and directly judged by observing the damage situation of the monitoring film, and the steel wire rope can be conveniently and directly inspected and determined.

Description

A protective cover for elevator pulleys Technical Field

[0001] This utility model relates to the field of elevator accessories technology, specifically a protective cover for elevator pulleys. Background Technology

[0002] An elevator is a fixed lifting device that serves designated floors. The pulley is one of the important components of the elevator lifting mechanism. In order to prevent the pulley from being hit by external collisions or accumulating a lot of dust, a matching protective cover is usually installed on the outside of the pulley for protection.

[0003] However, existing protective shields still have the following technical problems when in use:

[0004] Existing protective covers are often fixed to the outside of the pulley, and the steel wire rope that pulls the elevator up and down passes through the protective cover. However, as the steel wire rope is used for a long time, it is easy for the wire rope to break. The current protective cover cannot effectively monitor the wire rope breakage, and its function is relatively simple.

[0005] Therefore, a protective cover for elevator pulleys is proposed to solve the aforementioned problems. Summary of the Invention

[0006] The purpose of this invention is to provide a protective cover for elevator pulleys to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a protective cover for an elevator pulley, comprising a mounting frame, a pulley rotatably connected inside the mounting frame, a steel wire rope slidably connected outside the pulley, symmetrical limiting mechanisms provided on the front and rear sides of the mounting frame, symmetrical protective covers fixed to the upper ends of the mounting frame and the pulley by the limiting mechanisms, and rope-passing cavities opened on the left and right ends of the upper sides of the two protective covers, through which the steel wire rope passes;

[0008] The upper sides of the two protective covers are fixed with fixing mechanisms at both ends of the rope-threading cavity. A monitoring film is fixed between the two fixing mechanisms. The two monitoring films are located at both ends of the wire rope and do not contact the wire rope.

[0009] Preferably, the limiting mechanism includes a limiting screw, which is fixedly connected to the front and rear sides of the mounting bracket, the protective cover is slidably disposed outside the limiting screw, and the wall of the limiting screw is threadedly connected to a limiting nut.

[0010] Preferably, the fixing mechanism includes a fixing frame, which is fixedly connected to the upper side of the protective cover. A first threaded rod is threadedly connected to the upper side of the fixing frame. A rotating block is fixed to the upper end of the first threaded rod, and a pressure plate is rotatably connected to the lower end of the first threaded rod. The side wall of the pressure plate is slidably connected to the inner wall of the fixing frame, and the monitoring film is clamped and fixed between the pressure plate and the fixing frame.

[0011] Preferably, both of the protective covers have an installation cavity on their upper sides, and an installation mechanism is provided inside the installation cavity. A buffer mechanism is fixed to the lower end of the installation mechanism, and an oil scraper is fixed to the lower end of the buffer mechanism.

[0012] Preferably, the mounting mechanism includes a mounting plate located inside the mounting cavity. Symmetrical mounting blocks are fixed on both the left and right sides of the mounting plate. Mounting bolts are threaded into the interior of each mounting block. The lower end of each mounting bolt is threaded into the upper side of the protective cover. A second threaded rod is provided through the interior of the mounting plate. The rod wall of the second threaded rod is threaded into the upper and lower ends of the mounting plate, respectively, and fastening nuts are threaded into it.

[0013] Preferably, the buffer mechanism includes a horizontal plate, which is fixedly connected to the lower end of the second threaded rod. A sliding plate is slidably connected inside the horizontal plate. A spring is fixed to the upper side of the sliding plate, and the upper end of the spring is fixedly connected to the inner wall of the horizontal plate. A movable rod is fixed to the lower side of the sliding plate, and the movable rod is slidably connected to the lower side of the horizontal plate. The lower end of the movable rod is fixedly connected to the upper side of the oil scraper.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This application uses a fixing mechanism to install symmetrical monitoring films on both sides of the wire rope, so that the monitoring films do not directly contact the wire rope and are spaced 1-2 cm apart. If a wire breaks during the use of the wire rope, the broken wire will directly tear the monitoring film. This allows maintenance personnel to easily determine the possibility of wire breakage by observing the damage to the monitoring film during inspections, facilitating direct inspection and confirmation of the wire rope. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the structure of this utility model;

[0017] Figure 2 is a schematic cross-sectional view of the structure in Figure 1;

[0018] Figure 3 is an enlarged structural diagram of part A in Figure 1;

[0019] Figure 4 is a cross-sectional view of the mounting mechanism and the buffer mechanism.

[0020] In the diagram: 1. Mounting bracket, 2. Pulley, 3. Wire rope, 4. Protective cover, 5. Monitoring membrane, 6. Limiting screw, 7. Limiting nut, 8. Fixing frame, 9. First threaded rod, 10. Rotating block, 11. Pressure plate, 12. Scraper, 13. Mounting plate, 14. Mounting block, 15. Second threaded rod, 16. Fastening nut, 17. Horizontal plate, 18. Slide plate, 19. Spring, 20. Moving rod. Detailed Implementation

[0021] 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.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Example:

[0024] Please refer to Figures 1-4. This utility model provides a technical solution:

[0025] A protective cover for an elevator pulley includes a mounting frame 1. A pulley 2 is rotatably connected inside the mounting frame 1, and a steel wire rope 3 is slidably connected outside the pulley 2. Symmetrical limiting mechanisms are provided on the front and rear sides of the mounting frame 1. Symmetrical protective covers 4 are fixed to the upper ends of the mounting frame 1 and the pulley 2 through the limiting mechanisms. Rope-passing cavities are opened on the left and right ends of the upper sides of the two protective covers 4, and the steel wire rope 3 passes through the rope-passing cavities.

[0026] The upper sides of the two protective covers 4 are fixed with fixing mechanisms at both ends of the rope-threading cavity. The two fixing mechanisms are fixed together with a monitoring film 5. The two monitoring films 5 are located at both ends of the wire rope 3 and do not contact the wire rope 3. When the wire rope 3 has a slight break, it may stick to the side wall of the main body of the wire rope 3 and will not lift up. However, when there is a serious break, due to the certain torque of the wire rope 3 during production, it will lift up and directly tear the monitoring film 5.

[0027] The limiting mechanism includes a limiting screw 6, which is fixedly connected to the front and rear sides of the mounting bracket 1. The protective cover 4 is slidably disposed outside the limiting screw 6. The rod wall of the limiting screw 6 is threadedly connected to a limiting nut 7. When it is necessary to inspect the internal pulley 2, the protective cover 4 can be moved directly to both ends without disassembling it.

[0028] The fixing mechanism includes a fixing frame 8, which is fixedly connected to the upper side of the protective cover 4. A first threaded rod 9 is threadedly connected to the upper side of the fixing frame 8. A rotating block 10 is fixed to the upper end of the first threaded rod 9. A pressure plate 11 is rotatably connected to the lower end of the first threaded rod 9. The side wall of the pressure plate 11 is slidably connected to the inner wall of the fixing frame 8. The monitoring membrane 5 is clamped and fixed between the pressure plate 11 and the fixing frame 8. Under normal high temperatures, it is not necessary to scrape off the lubricating oil inside the groove of the pulley 2. This situation is more likely to occur in winter when the temperature is low and there is a possibility that the lubricating oil will solidify.

[0029] Both protective covers 4 have an installation cavity on their upper side. An installation mechanism is installed inside the installation cavity. A buffer mechanism is fixed to the lower end of the installation mechanism. An oil scraper 12 is fixed to the lower end of the buffer mechanism. The lower end of the oil scraper 12 is adapted to and fully fits the inner wall of the slide groove of the pulley 2.

[0030] The mounting mechanism includes a mounting plate 13, which is located inside the mounting cavity. Symmetrical mounting blocks 14 are fixed on the left and right sides of the mounting plate 13. Mounting bolts are threaded inside the mounting blocks 14, and the lower ends of the mounting bolts are threaded to the upper side of the protective cover 4. A second threaded rod 15 is provided through the interior of the mounting plate 13. The rod walls of the second threaded rod 15 are threaded to fastening nuts 16 at the upper and lower ends of the mounting plate 13, respectively.

[0031] The buffer mechanism includes a horizontal plate 17, which is fixedly connected to the lower end of the second threaded rod 15. A sliding plate 18 is slidably connected inside the horizontal plate 17. A spring 19 is fixedly fixed to the upper side of the sliding plate 18. The upper end of the spring 19 is fixedly connected to the inner wall of the horizontal plate 17. A moving rod 20 is fixedly fixed to the lower side of the sliding plate 18. The moving rod 20 is slidably connected to the lower side of the horizontal plate 17. The lower end of the moving rod 20 is fixedly connected to the upper side of the oil scraper 12.

[0032] Working principle:

[0033] Two protective covers 4 are fixed to the upper ends of the mounting frame 1 and pulley 2 by a limiting mechanism. The two protective covers 4 are compatible. The monitoring membrane 5 is fixed to both ends of the steel wire rope 3 by a fixing mechanism. During use, if the steel wire rope 3 breaks, it will be partially raised and directly tear the monitoring membrane 5. When the inspection personnel observe damage to the monitoring membrane 5 during maintenance, they can carefully inspect the steel wire rope 3 to determine whether it has really broken.

[0034] In winter, lubricating oil is prone to solidification, and this lubricating oil will accumulate inside the pulley 2. The oil scraper 12 can be fixed inside the protective cover 4 by the installation mechanism and the buffer mechanism, so that the lower end of the oil scraper 12 contacts the sliding groove inside the pulley 2. By rotating the pulley 2, the oil scraper 12 scrapes off the solidified lubricating oil inside.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be considered as limiting the scope of the claims.

[0036] 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 protective cover for elevator pulleys, comprising a mounting bracket (1), characterized in that, The mounting frame (1) is internally connected to a pulley (2), and the pulley (2) is externally connected to a steel wire rope (3). The front and rear sides of the mounting frame (1) are provided with symmetrical limiting mechanisms. The upper ends of the mounting frame (1) and the pulley (2) are fixed with symmetrical protective covers (4) through the limiting mechanisms. The left and right ends of the upper sides of the two protective covers (4) are provided with rope-passing cavities, and the steel wire rope (3) passes through the rope-passing cavities. The upper sides of the two protective covers (4) are fixed at both ends of the rope-passing cavities, and the two fixed mechanisms are jointly fixed with a monitoring film (5). The two monitoring films (5) are located at both ends of the steel wire rope (3) and do not contact the steel wire rope (3).

2. The protective cover for elevator pulleys according to claim 1, characterized in that: The limiting mechanism includes a limiting screw (6), which is fixedly connected to the front and rear sides of the mounting bracket (1). The protective cover (4) is slidably disposed outside the limiting screw (6), and the rod wall of the limiting screw (6) is threadedly connected to a limiting nut (7).

3. The protective cover for elevator pulleys according to claim 1, characterized in that: The fixing mechanism includes a fixing frame (8), which is fixedly connected to the upper side of the protective cover (4). A first threaded rod (9) is threadedly connected to the upper side of the fixing frame (8). A rotating block (10) is fixed to the upper end of the first threaded rod (9). A pressure plate (11) is rotatably connected to the lower end of the first threaded rod (9). The side wall of the pressure plate (11) is slidably connected to the inner wall of the fixing frame (8). The monitoring film (5) is clamped and fixed between the pressure plate (11) and the fixing frame (8).

4. The protective cover for elevator pulleys according to claim 1, characterized in that: Both of the protective covers (4) have an installation cavity on their upper side. An installation mechanism is provided inside the installation cavity. A buffer mechanism is fixed at the lower end of the installation mechanism. An oil scraper (12) is fixed at the lower end of the buffer mechanism.

5. A protective cover for elevator pulleys according to claim 4, characterized in that: The mounting mechanism includes a mounting plate (13) located inside the mounting cavity. Symmetrical mounting blocks (14) are fixed on the left and right sides of the mounting plate (13). The mounting blocks (14) are threaded with mounting bolts inside. The lower end of the mounting bolts is threaded to the upper side of the protective cover (4). A second threaded rod (15) is provided through the interior of the mounting plate (13). The rod wall of the second threaded rod (15) is threaded with fastening nuts (16) at the upper and lower ends of the mounting plate (13).

6. A protective cover for elevator pulleys according to claim 5, characterized in that: The buffer mechanism includes a horizontal plate (17), which is fixedly connected to the lower end of the second threaded rod (15). A sliding plate (18) is slidably connected inside the horizontal plate (17). A spring (19) is fixed to the upper side of the sliding plate (18). The upper end of the spring (19) is fixedly connected to the inner wall of the horizontal plate (17). A moving rod (20) is fixed to the lower side of the sliding plate (18). The moving rod (20) is slidably connected to the lower side of the horizontal plate (17). The lower end of the moving rod (20) is fixedly connected to the upper side of the oil scraper (12).

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