Multilayer chain for elevator

Abstract

The multi-layer chain comprises a first outer chain plate, an internal thread groove is formed in the side face of the first outer chain plate, a chain pin is welded to the side face of the first outer chain plate, a bearing is welded to the chain pin, an external thread ring is welded to one end of the bearing, the external thread ring is located in the internal thread groove, and a shaft sleeve is arranged on the surface of the bearing. According to the multi-layer chain for the elevator, internal thread grooves are formed in the side faces of the first outer chain plates, chain pins are welded to the side faces of the first outer chain plates, external thread rings are installed in the internal thread grooves, bearings are welded to one ends of the external thread rings, the chain pins are sleeved with the bearings, shaft sleeves are installed on the surfaces of the bearings, and at the moment, the bearings are installed between the shaft sleeves and the chain pins; friction between the shaft sleeve and the chain pin is reduced through the bearing, so that abrasion is reduced, and the service life of the chain is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of chains, and in particular relates to a multi-layer chain for a hoist. Background Art

[0002] Chains are generally metal links or rings, which are mostly used for mechanical transmission and traction. At the same time, the chains installed on the lifters have the effect of providing items, which can improve work efficiency and make work more convenient.

[0003] The multi-layer chains for hoists currently available on the market have the following problems in actual use:

[0004] 1. In actual use, the traditional multi-layer chain for hoists directly connects the shaft sleeve to the chain pin. After long-term use, the shaft sleeve and the chain pin will rub for a long time, resulting in wear and tear, and the service life is short;

[0005] 2. During the use of most multi-layer chains for hoists, the chains are mostly fixed with cotter pins. Such fasteners have high hardness. When the chain is damaged and needs to be disassembled and replaced, additional tools are required to remove the fasteners, which is troublesome to use. Utility Model Content

[0006] The utility model aims to provide a multi-layer chain for a hoist to solve the technical problems raised in the background technology.

[0007] To achieve the above-mentioned purpose, the specific technical scheme of the utility model is as follows: a multi-layer chain for a hoist, comprising a first outer link plate, an internal thread groove is arranged on the side of the first outer link plate, a chain pin is welded on the side of the first outer link plate, a bearing is installed on the chain pin, an external thread ring is welded on one end of the bearing, the external thread ring is located inside the internal thread groove, and a sleeve is provided on the surface of the bearing.

[0008] Preferably, the other end of the chain pin is fixedly connected to an externally threaded rod, the externally threaded rod passes through the second outer link plate, the other end of the externally threaded rod is provided with a cap, one end of the cap is fixedly connected to an internally threaded column, and the externally threaded rod is sleeved inside the internally threaded column.

[0009] Preferably, a first inner link plate is welded to one end of the shaft sleeve, and a second inner link plate is welded to the other end of the shaft sleeve, and the first inner link plate is located on the side of the second inner link plate.

[0010] Preferably, a retaining ring is welded on the surface of the cap, and the bottom of the retaining ring is attached to the second outer link plate.

[0011] Preferably, anti-skid sheets are welded on the surface of the cap, and the anti-skid sheets are distributed in an equidistant manner.

[0012] Preferably, a fixing frame is welded to the bottom of the second outer link plate, and a hanging hole is provided on the surface of the fixing frame.

[0013] The utility model provides a multi-layer chain for a hoist having the following advantages:

[0014] 1. A multi-layer chain for a hoist, wherein an internal thread groove is provided on the side of a first outer link plate, a chain pin is welded on the side of the first outer link plate, an external thread ring is installed inside the internal thread groove, a bearing is welded on one end of the external thread ring, the chain pin is sleeved inside the bearing, a shaft sleeve is installed on the surface of the bearing, and a bearing is installed between the shaft sleeve and the chain pin, and the bearing is used to reduce the friction between the shaft sleeve and the chain pin, thereby reducing the wear thereof and improving the service life of the chain;

[0015] 2. This kind of multi-layer chain for hoists is connected by fixing an external threaded rod at the other end of the chain pin. The external threaded rod passes through the second outer link plate. A cap is arranged at the other end of the external threaded rod. One end of the cap is fixedly connected to an internal threaded column. The external threaded rod is sleeved inside the internal threaded column. At this time, the cap replaces the cotter pin type fastener. When the chain needs to be disassembled and replaced, the cap can be directly unscrewed to achieve disassembly, which is very convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the first outer link plate of the utility model;

[0019] Figure 3 This is a schematic diagram of the fixing frame structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the chain pin structure of the utility model.

[0021] Explanation of the markings in the figure: 1. first inner link plate; 2. second inner link plate; 3. bushing; 4. first outer link plate; 5. chain pin; 6. second outer link plate; 7. external threaded rod; 8. external threaded ring; 9. internal threaded groove; 10. internal threaded column; 11. cap; 12. bearing; 13. anti-slip sheet; 14. fixing frame; 15. hanging hole; 16. retaining ring. DETAILED DESCRIPTION

[0022] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0023] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0025] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0026] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present utility model. In order to simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0027] In order to better understand the purpose, structure and function of the utility model, the utility model is described in further detail below in conjunction with the accompanying drawings.

[0028] like Figure 1-4As shown, the utility model is a multi-layer chain for a hoist, comprising a first outer link plate 4, an internal thread groove 9 is provided on the side of the first outer link plate 4, a chain pin 5 is welded on the side of the first outer link plate 4, a bearing 12 is installed and welded on the chain pin 5, an external thread ring 8 is welded on one end of the bearing 12, and the external thread ring 8 is installed and used to install the bearing 12 on the internal thread groove 9, providing a fixing effect for the bearing 12, which is very convenient to use. The external thread ring 8 is located inside the internal thread groove 9, and a shaft sleeve 3 is provided on the surface of the bearing 12. By installing the bearing 12, the bearing 12 is used to reduce the friction between the shaft sleeve 3 and the chain pin 5, thereby reducing the wear thereof and improving the service life of the chain.

[0029] The other end of the chain pin 5 is fixedly connected to the externally threaded rod 7, and the externally threaded rod 7 passes through the second outer link plate 6. A cap 11 is provided at the other end of the externally threaded rod 7. One end of the cap 11 is fixedly connected to the internally threaded column 10. The internally threaded column 10 is sleeved with the externally threaded rod 7. By installing the cap 11 and utilizing the cap 11 to replace cotter pin-type fasteners, when the chain needs to be disassembled and replaced, the cap 11 can be directly unscrewed to achieve disassembly, which is very convenient to use.

[0030] The first inner link plate 1 is welded to one end of the sleeve 3, and the second inner link plate 2 is welded to the other end of the sleeve 3. The first inner link plate 1 is located on the side of the second inner link plate 2. By installing the first inner link plate 1 and the second inner link plate 2, the chain provides an extended installation effect, so that the length of the chain can be freely selected, which is very convenient to use.

[0031] A retaining ring 16 is welded on the surface of the cap 11, and the bottom of the retaining ring 16 is fitted to the second outer link plate 6. By installing the retaining ring 16, the retaining ring 16 can provide a limiting effect for the cap 11, so that the cap 11 can stop directly after being installed at a suitable position, which is very convenient to use.

[0032] Anti-skid sheets 13 are welded on the surface of the cap 11, and the anti-skid sheets 13 are distributed in an equidistant manner. By installing the anti-skid sheets 13, when the cap 11 needs to be rotated, the anti-skid sheets 13 can be used to increase the friction between the cap 11 and the palm. The cap 11 has a stronger force point, and it is more convenient and labor-saving to rotate.

[0033] A fixing frame 14 is welded at the bottom of the second outer link plate 6, and a hanging hole 15 is provided on the surface of the fixing frame 14. By providing the hanging hole 15, materials can be hung on the hanging hole 15. At this time, the materials can be lifted under the operation of the chain, which can increase work efficiency and is very convenient to use.

[0034] The working principle of the multi-layer chain for the hoist: when using the multi-layer chain for the hoist, the external threaded ring 8 should be installed inside the internal threaded groove 9 first, at this time, the bearing 12 can be fixed, and the chain pin 5 will be sleeved inside the bearing 12, and then the bearing 12 is passed through the first inner chain plate 1 and the shaft sleeve 3. At this time, the bearing 12 is installed between the shaft sleeve 3 and the chain pin 5, and the bearing 12 is used to reduce the friction between the shaft sleeve 3 and the chain pin 5, thereby reducing their wear and improving the service life of the chain. After that, the external threaded rod 7 is passed through the second inner chain plate 2 and the second outer chain plate 6, and the cap 11 is installed on the external threaded rod 7. When one end of the retaining ring 16 is attached to the side of the second outer chain plate 6, the cover surface is used to provide a fixing effect for the second inner chain plate 2 and the second outer chain plate 6. The cap 11 is used to replace the cotter pin fastener. When the chain needs to be disassembled and replaced, the cap 11 can be directly unscrewed to achieve disassembly, which is very convenient to use. It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A multi-layer chain for a hoist, comprising a first outer link plate (4), characterized in that: An internal thread groove (9) is provided on the side of the first outer link plate (4), a chain pin (5) is welded to the side of the first outer link plate (4), a bearing (12) is installed and welded to the chain pin (5), an external thread ring (8) is welded to one end of the bearing (12), the external thread ring (8) is located inside the internal thread groove (9), and a shaft sleeve (3) is provided on the surface of the bearing (12).

2. The multi-layer chain for hoist according to claim 1, characterized in that: The other end of the chain pin (5) is fixedly connected to an externally threaded rod (7), the externally threaded rod (7) passes through the second outer link plate (6), the other end of the externally threaded rod (7) is provided with a cover cap (11), one end of the cover cap (11) is fixedly connected to an internally threaded column (10), and the internal part of the internally threaded column (10) is sleeved with the externally threaded rod (7).

3. The multi-layer chain for hoist according to claim 1, characterized in that: A first inner link plate (1) is welded to one end of the shaft sleeve (3), and a second inner link plate (2) is welded to the other end of the shaft sleeve (3); the first inner link plate (1) is located on the side of the second inner link plate (2).

4. The multi-layer chain for hoist according to claim 2, characterized in that: A retaining ring (16) is welded on the surface of the cover cap (11), and the bottom of the retaining ring (16) is attached to the second outer link plate (6).

5. The multi-layer chain for hoist according to claim 2, characterized in that: The surface of the cover cap (11) is welded with anti-skid sheets (13), and the anti-skid sheets (13) are distributed in an equidistant manner.

6. The multi-layer chain for hoist according to claim 2, characterized in that: A fixing frame (14) is welded to the bottom of the second outer link plate (6), and a hanging hole (15) is provided on the surface of the fixing frame (14).

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