Mute plastic-coated balance compensation chain

Abstract

The utility model relates to a mute plastic-coated balance compensation chain, which comprises a continuous chain formed by embedding and sleeving a plurality of chain rings end to end, a mute filling layer is filled in the middle space of the chain rings, and a sheath layer is tightly wrapped outside the whole chain. After the mute plastic-coated balance compensation chain disclosed by the utility model is used for a period of time, displacement and collision among the chain rings caused by falling off of the sheath layer or temperature change are avoided, the mute filling layer limits the movement of the chain rings, noise caused by metal collision is avoided, and the problem of abnormal sound of the plastic-coated balance compensation chain is fundamentally solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of elevator accessories, and in particular relates to a silent plastic-coated balance compensation chain. Background Art

[0002] Currently, elevators typically consist of a car, traction rope, counterweight, and traveling cables. During elevator operation, the length of the traction ropes on the car and counterweight sides fluctuates, causing the weight of the traction ropes on both sides of the traction sheave to fluctuate. Therefore, when the elevator's lifting height exceeds a certain level, a compensating chain with a certain weight must be installed to balance the weight changes of the traction ropes on both sides of the traction sheave caused by this height change. In other words, the compensating chain connects the elevator car and counterweight, balancing the weight of the traction rope and traveling cables, thus balancing the elevator's operation. The elevator market requires compensating chains to have high load-bearing capacity, low operating noise, and a certain weight. Compensating chains are generally divided into rope-threaded balancing compensating chains, plastic-coated balancing compensating chains, and all-plastic balancing compensating chains.

[0003] Among them, the rope-threading balancing compensation chain is the most primitive type of compensation chain and can only be used for elevators with a speed of less than 1.75m / s. The structure is to insert a hemp rope into the iron chain. During use, this type of compensation chain makes a lot of noise due to friction and collision between the chains, and is prone to rust. The hemp rope is prone to shrinkage when it gets wet and is prone to rot over time, affecting the safety of the elevator operation.

[0004] To reduce noise during operation and mitigate environmental corrosion, plastic-coated balancing compensating chains are wrapped in a plastic sheath. Compared to rope-threaded compensating chains, plastic-coated compensating chains mitigate chain link impact during operation, significantly reducing noise. Plastic-coated compensating chains have a wide range of applications, and can be used in virtually all elevators with speeds below 2.5 m / s. However, due to the metal-to-metal contact between the links, noise is unavoidable. This is a drawback that can cause user discomfort, especially in cold climates.

[0005] All-plastic balancing compensating chains can be used in high-speed elevators up to 3 m / s. Their chain-like PVC structure ensures smooth and silent elevator operation. However, because the weight per unit length of the compensating chain must match that of the traction rope, the outer sheath diameter must be increased. This compensating chain is not flexible during operation, with significant stretching around the outer circumference, leading to irregular swinging and impracticality in small hoistway spaces. Furthermore, the chain's material is relatively expensive, making it unsuitable for most elevator users. Consequently, this all-plastic chain has certain limitations.

[0006] Conventional plastic-coated balancing and compensating chains consist of an iron chain wrapped in a tubular sheath, manufactured using a vacuum pump. Initially, the sheath is thermoplastically bonded to the gaps between the links. After a while, especially in cold climates, this bond becomes weak and easily breaks off. This causes relative movement and collisions between the links, which can cause noise.

[0007] Therefore, the need for technical improvement and upgrading of the plastic packaging balance compensation chain is particularly urgent. Utility Model Content

[0008] In response to the shortcomings of the existing technology, the utility model provides a silent plastic-coated balance compensation chain. The specific technical solution is as follows:

[0009] The utility model provides a silent plastic-coated balance compensation chain, which comprises a plurality of chain links which are socketed end to end to form a continuous chain, wherein the empty space between the chain links is filled with a silent filling layer, and the outside of the entire chain is tightly wrapped with a sheath layer.

[0010] As a preferred technical solution of the present invention, the silent filling layer and the sheath layer are formed by front-to-back hot-melt extrusion through two extrusion flow channels on the same extrusion die adapted thereto.

[0011] As a preferred technical solution of the present invention, the chain link is an elliptical structure.

[0012] As a preferred technical solution of the present utility model, the chain link is a gourd-shaped structure.

[0013] As a preferred technical solution of the present invention, the sound-proof filling layer is made of soft PVC or rubber material.

[0014] As a preferred technical solution of the present invention, the sheath layer is made of PVC elastomer material.

[0015] The beneficial effects of the utility model are:

[0016] In the utility model, the silent filling layer is filled in the middle space of the chain ring, which can effectively absorb and isolate the vibration and noise generated by the mutual friction and collision of the chain rings during the operation of the elevator.

[0017] The silent filling layer not only plays a role in sound insulation and noise reduction, but also increases the connection strength and stability between the chain links; it fills the airspace of the chain links to prevent the chain links from relative displacement or deformation due to uneven force during use, thereby improving the overall durability and safety of the compensation chain.

[0018] The sheath layer tightly wrapped around the outside of the entire chain not only provides additional protection for the compensation chain, preventing the external environment (such as moisture, corrosion, etc.) from damaging the chain links and silent filling layer, but also further isolates noise.

[0019] By reducing friction and collision between chain links and protecting the silent filling layer and sheath layer, the service life of the silent plastic-coated balance compensation chain is extended.

[0020] After a period of use, the silent plastic-coated balancing compensation chain of the utility model will not cause displacement or collision between the chain links due to shedding of the sheath layer or temperature changes. The silent filling layer limits the movement of the chain links, avoids noise caused by metal collisions, and fundamentally solves the problem of abnormal noise caused by the plastic-coated compensation chain.

[0021] In addition, compared with the all-plastic balancing compensation chain, the structure of the present invention uses much less material, so the cost is low and it is easy to promote in large quantities. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Shows a schematic diagram of the structure of the silent plastic-coated balanced compensation chain of the present invention;

[0023] Figure 2 Shown Figure 1 Schematic diagram of the longitudinal section structure;

[0024] Figure 3 The figure shows the processing diagram of the silent plastic-coated balance compensation chain of the present invention;

[0025] Figure 4 The utility model shows a schematic structural diagram of a gourd-shaped chain link.

[0026] As shown in the figure: 1. Chain link; 2. Silent filling layer; 3. Sheath layer; 4. Extrusion die; 5. Extrusion flow channel. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] Example 1

[0029] In order to solve the technical problems in the background technology, the following silent plastic-coated balanced compensation chain is provided:

[0030] Combine Figure 1 and Figure 2 As shown, a silent plastic-coated balancing compensation chain includes a plurality of chain links 1 that are socketed end to end to form a continuous chain, the middle space of the chain links 1 is filled with a silent filling layer 2, and the entire chain is tightly wrapped with a sheath layer 3.

[0031] By adopting the above technical solution, the silent plastic-coated balancing compensation chain can effectively absorb and isolate the vibration and noise generated by mutual friction and collision of the chain links during the operation of the elevator through the silent filling layer 2 filled in the middle space of the chain link 1.

[0032] The silent filling layer 2 not only plays the role of sound insulation and noise reduction, but also increases the connection strength and stability between the chain links 1; it fills the airspace of the chain links to prevent the chain links from relative displacement or deformation due to uneven force during use, thereby improving the overall durability and safety of the compensation chain.

[0033] The sheath layer 3 tightly wrapped around the outside of the entire chain not only provides additional protection for the compensation chain, preventing the external environment (such as moisture, corrosion, etc.) from damaging the chain links and the silent filling layer, but also further isolates noise.

[0034] By reducing the friction and collision between the chain links 1 and the protection of the silent filling layer 2 and the sheath layer 3, the service life of the silent plastic-coated balance compensation chain is extended.

[0035] After a period of use, the silent plastic-coated balancing compensation chain will not cause displacement or collision between the chain links 1 due to the sheath layer 3 falling off or temperature changes. The silent filling layer 2 limits the movement of the chain links 1, avoiding noise caused by metal collisions, and fundamentally solving the problem of abnormal noise caused by the plastic-coated compensation chain.

[0036] In addition, compared with the all-plastic balance compensation chain, this structure uses much less material, so the cost is lower and it is easy to promote in large quantities.

[0037] like Figure 3 As shown, the silent filling layer 2 and the sheath layer 3 are formed by front-to-back hot-melt extrusion through two extrusion channels 5 on the same extrusion die 4 adapted thereto.

[0038] By adopting the above technical solution, the silent filling layer 2 and the sheath layer 3 are extruded front and back through two extrusion channels 5 in the extrusion die 4 and tightly fit together, realizing integrated molding of the two. This structure not only enhances the overall strength of the compensation chain, but also effectively avoids the problem of easy falling off of the sheath layer 3 in the traditional plastic-coated compensation chain.

[0039] By simply adding an extrusion channel 5 to the extrusion die 4, the silent filling layer 2 can be filled before the sheath layer 3 is wrapped, thereby improving production efficiency and reducing production costs.

[0040] The introduction of the silent filling layer 2 itself has a good sound insulation and noise reduction effect; and through integrated molding with the sheath layer 3, the friction and collision sound between the chain links can be further reduced, making the compensation chain more stable and quiet during operation; this is of great significance to improving the ride comfort and user experience of the elevator.

[0041] like Figure 1 As shown, the chain ring 1 is an elliptical structure.

[0042] By adopting the above technical solution, the elliptical design of the chain link 1 enables the chain to more naturally conform to the curve of the well when bending, reducing stress concentration and deformation of the chain during the bending process; this improvement in flexibility helps to extend the service life of the chain and reduce noise and vibration caused by chain deformation.

[0043] The elliptical structure of the chain link 1 allows for better weight distribution of the chain in the vertical direction; when the chain runs on the traction sheave, the elliptical structure of the chain link 1 can better adapt to the contour of the traction sheave, reducing the chain's jumping and vibration during the traction process, thereby improving the smoothness of the elevator operation.

[0044] The elliptical structure of the chain link 1 allows the chain to disperse stress more evenly when subjected to tension; this design improves the chain's carrying capacity, allowing the chain to maintain stable performance even when subjected to heavy loads.

[0045] Preferably, the silent filling layer 2 is made of soft PVC or rubber material. The silent filling layer 2 can also be made of high-damping, sound-absorbing materials such as special rubber or polyurethane foam. These materials can convert mechanical vibrations between the chain links into heat or other forms of energy dissipation, thereby significantly reducing noise.

[0046] Preferably, the sheath layer 3 is made of PVC elastomer material. The sheath layer 3 can also be made of high-strength, wear-resistant, and corrosion-resistant materials, such as reinforced PVC and nylon, to ensure that the compensation chain maintains good appearance and performance during long-term use.

[0047] Example 2

[0048] Combine Figure 4 As shown, based on the above embodiment, this embodiment further provides the following content:

[0049] In this embodiment, the chain link 1 is a gourd-shaped structure.

[0050] By adopting the above technical solution, the chain link 1 adopts a gourd-shaped structure design, which enables the chain link 1 to form a closer contact when arranged, reducing the gaps between the chain links 1. This design helps to reduce the displacement, friction and collision of the chain link 1 during operation, thereby reducing the generation of noise; at the same time, the close contact also helps to improve the overall stability of the chain.

[0051] The gourd-shaped structure of the chain link 1 can not only reduce the amount of material used in the silent filling layer 2, but also increase the connection stability between the sheath layer 3 and the chain link 1, and reduce the probability of the sheath layer 3 falling off.

[0052] The working principle and use process of this utility model:

[0053] When in use, the present invention first forms a continuous chain with multiple links 1 interlocked end-to-end. This design ensures the chain's flexibility and continuity, enabling smooth movement in a variety of applications. The central space between each link is filled with a silent filling layer 2, which plays a key role in noise reduction.

[0054] During production, the silent filling layer 2 and the jacket layer 3 are formed by hot-melt extrusion through two extrusion channels 5 on the same extrusion die 4. This ensures that the two layers are tightly integrated during the molding process, ensuring structural stability and durability. The silent filling layer 2 is made of soft PVC or rubber, which has excellent sound absorption and shock absorption properties, effectively preventing the chain links 1 from shifting and colliding, and significantly reducing the noise generated during chain movement.

[0055] The sheath layer 3 is made of PVC elastomer, which not only has excellent wear and corrosion resistance, but also further protects the internal silent filling layer 2 and the chain itself from damage from the external environment. At the same time, the elastic properties of the sheath layer 3 also help to improve the flexibility and service life of the chain.

[0056] In actual use, when this silent plastic-coated balancing and compensation chain is installed in elevator equipment requiring balancing, compensation, and noise reduction, the chain moves with the elevator. Due to the presence of the silent filling layer 2 and the sheath layer 3, the noise generated by the chain during movement is greatly reduced, thereby improving the overall operating quality of the elevator equipment.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A silent plastic-coated balanced compensation chain, characterized by: The invention comprises a plurality of chain links (1) which are joined end to end to form a continuous chain, wherein the middle space of the chain links (1) is filled with a silent filling layer (2), and the entire chain is tightly wrapped with a sheath layer (3).

2. The silent plastic-coated balance compensation chain according to claim 1, characterized in that: The silent filling layer (2) and the sheath layer (3) are formed by hot-melt extrusion through two extrusion channels (5) on a same extrusion die (4) adapted thereto.

3. The silent plastic-coated balance compensation chain according to claim 1, characterized in that: The chain link (1) is an elliptical structure.

4. The silent plastic-coated balance compensation chain according to claim 1, characterized in that: The chain link (1) is a gourd-shaped structure.

5. The silent plastic-coated balance compensation chain according to claim 2, characterized in that: The sound-proof filling layer (2) is made of soft PVC or rubber material.

6. The silent plastic-coated balance compensation chain according to claim 2, characterized in that: The sheath layer (3) is made of PVC elastomer material.

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