Elevator door change gear formed through cold forging

Abstract

The utility model relates to the technical field of elevator accessory equipment, and discloses a cold forging forming elevator door change gear which comprises a change gear body, a first limiting groove is formed in the change gear body, a sliding groove is formed in the change gear body, a rubber pad is fixedly connected in the change gear body, an installation groove is fixedly connected in the change gear body, and a second limiting groove is formed in the change gear body. A bearing is arranged in the change gear body, a limiting assembly is arranged in the bearing, a second limiting groove is formed in the bearing, a limiting roller is arranged in the bearing, the limiting assembly comprises a limiting ring, one side of the limiting ring is fixedly connected to the outer wall of the bearing, and the outer wall of the limiting ring is slidably connected to the interior of the first limiting groove. According to the elevator door change gear, through cooperation of the change gear body, the bearing, the limiting ring and the rubber pad, the effect of reducing noise is achieved, the problem that noise is large during operation due to the fact that no damping structure exists when a rope passes through the change gear to rotate is solved, and the damping and noise reduction effects of the elevator door change gear are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator accessories and equipment, in particular to a cold forged elevator door hanging wheel. Background Art

[0002] Elevator door pulleys are wheels installed on elevator doors to support and guide the movement of the doors. They are usually made of metal or special alloys to ensure sufficient strength and durability to withstand high frequency use and heavy loads in elevator operation, thereby increasing the density and strength of the material. Therefore, cold forged elevator door pulleys are needed, which enables the cold forged pulleys to withstand high loads and frequent use in elevator operation, ensuring the safety and stability of the elevator door.

[0003] After searching, a kind of elevator door hanging wheel structure is disclosed in the announcement number: CN217233186U, which relates to the technical field of elevator accessories and equipment, including a hanging wheel body, the inner surface of the hanging wheel body is fixedly connected with a plurality of reinforcing ribs, the side of the reinforcing rib away from the hanging wheel body is connected with a bearing, the inner surface of the bearing is provided with an axial hole, the inside of the hanging wheel body is fixedly connected with a wheel groove, the wheel groove is formed by cold forging technology, a plurality of limit blocks are fixedly connected inside the wheel groove, the inside of the wheel groove is clamped with a polyurethane outer ring through the limit blocks, and the inside of the two sides of the polyurethane outer ring is fixedly connected with a spring. The utility model sets the hanging wheel body, reinforcing ribs, bearings, axial holes, wheel grooves and polyurethane outer rings, and adopts the cold forging method to achieve the minimum energy and material consumption, thereby improving production efficiency and reducing cost expenditure, avoiding the hanging wheel energy and material consumption caused by the complicated process effect during the production of the hanging wheel, which is conducive to reducing energy consumption and finished product cost, and at the same time is conducive to greatly improving work efficiency. However, this patent only solves the problem of how to achieve the minimum energy and material consumption by the cold forging method, thereby improving production efficiency and reducing cost expenditure, and avoiding the consumption of energy and materials for the pulley due to the complex process effect during the production of the pulley, which is beneficial to reducing energy consumption and finished product costs, and at the same time is beneficial to greatly improving work efficiency. It does not solve the problem that the pulley is hard-connected during operation, resulting in no shock-absorbing structure when the rope passes through the pulley when it rotates, resulting in loud noise during operation. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a cold-forged elevator door hanging pulley, aiming to improve the problem that the rope passes through the hanging pulley without a shock-absorbing structure when rotating, resulting in a large noise during operation.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a cold forged elevator door pulley, including a pulley body, a limiting groove one is opened inside the pulley body, a sliding groove is opened inside the pulley body, a rubber pad is fixedly connected inside the pulley body, an installation groove is fixedly connected inside the pulley body, a bearing is arranged inside the pulley body, a limiting assembly is arranged inside the bearing, a limiting groove two is opened inside the bearing, and a limiting roller is arranged inside the bearing.

[0006] As a further description of the above technical solution:

[0007] The limiting assembly comprises a limiting ring, one side of which is fixedly connected to the outer wall of the bearing, and the outer wall of the limiting ring is slidably connected to the inside of a limiting groove.

[0008] As a further description of the above technical solution:

[0009] The outer wall of the bearing is rotatably connected to the interior of the hanging wheel body.

[0010] As a further description of the above technical solution:

[0011] Both ends of the limiting roller are rotatably connected inside the second limiting groove, and the outer wall of the limiting roller is attached to the inner wall of the sliding groove.

[0012] As a further description of the above technical solution:

[0013] A base layer is arranged inside the hanging wheel body, and a wear-resistant layer is fixedly connected to the outer wall of the base layer.

[0014] As a further description of the above technical solution:

[0015] The outer wall of the wear-resistant layer is fixedly connected with a protective layer.

[0016] As a further description of the above technical solution:

[0017] The hanging wheel body is composed of a base layer, a wear-resistant layer and a protective layer.

[0018] As a further description of the above technical solution:

[0019] A plurality of the limiting rollers are arranged in a ring array with the bearing as the center.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, firstly, the noise reduction effect is achieved through the cooperation between the hanging wheel body, the bearing, the limit ring and the rubber pad, which solves the problem that there is no shock-absorbing structure when the rope passes through the hanging wheel and rotates, resulting in high noise during operation, and improves the shock-absorbing and noise-reducing effect of the elevator door hanging wheel.

[0022] 2. In the utility model, the strength of the elevator door pulley is improved through the coordination between the pulley body, the base layer, the wear-resistant layer and the protective layer, which solves the problem that the strength of the traditional elevator door pulley is low, the pulley is prone to cracking during continuous operation, and the need for frequent replacement, thereby improving the practicality of the elevator door pulley. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional diagram of the cold-forged elevator door hanging wheel proposed by the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the rubber pad of the cold-forged elevator door hanging wheel proposed by the utility model;

[0025] Figure 3 This is a schematic diagram of the bearing structure of the cold-forged elevator door hanging wheel proposed by the utility model;

[0026] Figure 4 The utility model is a schematic diagram of the structure of the cold-forged elevator door hanging wheel body.

[0027] Legend:

[0028] 1. Pulley body; 2. Limiting groove 1; 3. Slide groove; 4. Bearing; 5. Limiting ring; 6. Limiting groove 2; 7. Limiting roller; 8. Rubber pad; 9. Mounting groove; 10. Base layer; 11. Wear-resistant layer; 12. Protective layer. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Reference Figure 1 and Figure 2, the utility model provides an embodiment: a cold forged elevator door hanging wheel, including a hanging wheel body 1, a limiting groove 2 is provided inside the hanging wheel body 1, a slide groove 3 is provided inside the hanging wheel body 1, a rubber pad 8 is fixedly connected inside the hanging wheel body 1, a mounting groove 9 is fixedly connected inside the hanging wheel body 1, a bearing 4 is arranged inside the hanging wheel body 1, a limiting assembly is arranged inside the bearing 4, a limiting groove 2 6 is provided inside the bearing 4, a limiting roller 7 is arranged inside the bearing 4, and the limiting assembly includes a limiting ring 5, one side of the limiting ring 5 is fixedly connected to the outer wall of the bearing 4, the outer wall of the limiting ring 5 is slidably connected to the inner wall of the limiting groove 2, the outer wall of the bearing 4 is rotatably connected to the inside of the hanging wheel body 1, both ends of the limiting roller 7 are rotatably connected to the inner wall of the limiting groove 2 6, and the outer wall of the limiting roller 7 is attached to the inner wall of the slide groove 3;

[0031] Specifically, first, the bearing 4 is limited in the limiting groove 2 by the limiting ring 5. This design can ensure that the bearing 4 will not be displaced too much during the working process, thereby ensuring the stability and accuracy of its rotation. The close fit between the limiting ring 5 and the limiting groove 2 allows the bearing 4 to move within a predetermined range, effectively preventing the position deviation caused by external force. Then, the friction between the bearing 4 and the hanging wheel body 1 is reduced by the limiting roller 7. The design of the limiting roller 7 is ingenious. It can not only reduce the friction coefficient between the bearing 4 and the hanging wheel body 1 and reduce energy loss, but also prevent the vibration of the hanging wheel body 1 during rotation to a certain extent. This friction reduction design is of great significance for improving the efficiency and extending the service life of mechanical equipment. In addition, the limiting roller 7 is limited in the bearing 4 by the limiting groove 26. This double-layer limiting structure makes the limiting roller 7 more stable during movement and reduces energy loss and noise caused by vibration. At the same time, the design of the limiting groove 26 also has a certain adjustment function, and the position of the limiting roller 7 can be adjusted according to actual needs to adapt to different working scenarios. It is worth mentioning that the outer wall of the limiting roller 7 rotates in the slide groove 3. This design makes the limiting roller 7 move more smoothly and reduces the heat and wear caused by friction. The careful design of the slide groove 3 not only provides a stable motion trajectory for the limiting roller 7, but also makes the entire structure more compact and beautiful. In actual use, it is connected to the hanging wheel body 1 through the telescopic mechanism and the mounting groove 9. This connection method is convenient for installation and disassembly, and can ensure the stability of the hanging wheel body 1 during operation. The mounting groove 9 and the hanging wheel body 1 are shock-absorbing through a rubber pad 8. The rubber pad 8 is made of hard rubber, has a certain elasticity and wear resistance, and can effectively absorb the slight vibration generated between the hanging wheel body 1 and the rope when it rotates.

[0032] Reference Figure 3 and Figure 4A base layer 10 is arranged inside the hanging wheel body 1, a wear-resistant layer 11 is fixedly connected to the outer wall of the base layer 10, and a protective layer 12 is fixedly connected to the outer wall of the wear-resistant layer 11. The hanging wheel body 1 is composed of the base layer 10, the wear-resistant layer 11 and the protective layer 12. A plurality of limiting rollers 7 are arranged in a ring array with the bearing 4 as the center;

[0033] Specifically, the hanging wheel body 1 is composed of a carefully designed base layer 10, a wear-resistant layer 11 and a protective layer 12, which together ensure the smooth operation and long-term use of the elevator door. The base layer 10 is the core part of the hanging wheel body 1 and is made of high-quality steel. The strength and toughness of the steel ensure that the hanging wheel body 1 can withstand the frequent opening and closing operations of the elevator door and carry various loads. This base layer 10 structure not only ensures the basic function of the hanging wheel body 1, but also provides a solid support for the subsequent wear-resistant layer 11 and protective layer 12. The wear-resistant layer 11 is a key part of the hanging wheel body 1 and is composed of a ceramic coating. The ceramic coating has extremely high wear resistance and corrosion resistance, and can effectively protect the surface of the base layer 10 from wear and corrosion. In the process of frequent opening and closing of the elevator door, the wear-resistant layer 11 plays a vital role, which greatly extends the service life of the hanging wheel body 1 and reduces the frequency of replacement and maintenance. The protective layer 12 is the last line of defense of the hanging wheel body 1 and is composed of a galvanized coating. The galvanized coating has good anti-oxidation and anti-corrosion properties, which can effectively prevent oxidation and corrosion on the surface of the hanging wheel body 1. This not only maintains the beauty of the hanging wheel body 1, but also further enhances its durability, ensuring that the elevator door can still maintain good performance during long-term use.

[0034] Working principle: when using the cold forged elevator door hanging wheel, first the bearing 4 is limited in the limiting groove 1 2 by the limiting ring 5, and then the friction between the bearing 4 and the hanging wheel body 1 is reduced by the limiting roller 7, and the limiting roller 7 is limited in the bearing 4 by the limiting groove 2 6, and the outer wall of the limiting roller 7 rotates in the slide groove 3, and then when in use, the telescopic part is connected to the hanging wheel body 1 through the installation groove 9, and the installation groove 9 and the hanging wheel body 1 are shock-absorbing through the rubber pad 8, so that the hanging wheel body 1 can absorb the slight vibration between the rope and the hanging wheel body 1 when rotating. The rubber pad 8 is made of hard rubber, and the hanging wheel body 1 is composed of a base layer 10, a wear-resistant layer 11 and a protective layer 12. The base layer 10 is made of steel to ensure that it can withstand the opening and closing operation and load of the elevator door. The wear-resistant layer 11 is a ceramic coating, which protects the surface of the base layer 10 from wear and corrosion and extends the service life of the hanging wheel body 1. The protective layer 12 is a galvanized coating, which can effectively prevent oxidation and corrosion on the surface of the hanging wheel body 1.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cold forged elevator door pulley, comprising a pulley body (1), characterized in that: A first limiting groove (2) is provided inside the hanging wheel body (1), a sliding groove (3) is provided inside the hanging wheel body (1), a rubber pad (8) is fixedly connected inside the hanging wheel body (1), a mounting groove (9) is fixedly connected inside the hanging wheel body (1), a bearing (4) is arranged inside the hanging wheel body (1), a limiting assembly is arranged inside the bearing (4), a second limiting groove (6) is provided inside the bearing (4), and a limiting roller (7) is arranged inside the bearing (4).

2. The cold forged elevator door hanging wheel according to claim 1, characterized in that: The limiting assembly comprises a limiting ring (5), one side of the limiting ring (5) is fixedly connected to the outer wall of the bearing (4), and the outer wall of the limiting ring (5) is slidably connected to the interior of the limiting groove 1 (2).

3. The cold forged elevator door hanging wheel according to claim 1, characterized in that: The outer wall of the bearing (4) is rotatably connected to the interior of the hanging wheel body (1).

4. The cold forged elevator door hanging wheel according to claim 1, characterized in that: Both ends of the limiting roller (7) are rotatably connected to the inside of the second limiting groove (6), and the outer wall of the limiting roller (7) is in contact with the inner wall of the slide groove (3).

5. The cold forged elevator door hanging wheel according to claim 1, characterized in that: A base layer (10) is provided inside the pulley body (1), and a wear-resistant layer (11) is fixedly connected to the outer wall of the base layer (10).

6. The cold forged elevator door hanging wheel according to claim 5, characterized in that: The outer wall of the wear-resistant layer (11) is fixedly connected with a protective layer (12).

7. The cold forged elevator door hanging wheel according to claim 1, characterized in that: The pulley body (1) is composed of a base layer (10), a wear-resistant layer (11) and a protective layer (12).

8. The cold forged elevator door hanging wheel according to claim 1, characterized in that: A plurality of the limiting rollers (7) are arranged in a ring array with the bearing (4) as the center.

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