Rubber-coated screw

Abstract

The utility model relates to the field of screws, and discloses a rubber-coated screw which comprises a screw body, hexagonal grooves are formed in the lower end of the screw body, a containing groove is formed in the inner top of each hexagonal groove, epoxy resin is coated on the inner wall of each containing groove, a neodymium magnet is fixedly arranged at the inner end of each containing groove, and the neodymium magnet is arranged in each hexagonal groove. A hexagonal buffer pad is fixedly arranged at the top end in the hexagonal groove, the screw body comprises a wear-resistant layer, a buffer layer is arranged at the inner end of the wear-resistant layer, and a bonding layer is arranged at the inner end of the buffer layer. According to the utility model, during installation, the neodymium magnet can be attracted to the connection part, and the initial butt joint of equipment can be conveniently and quickly carried out by utilizing the attraction characteristic of the neodymium magnet, so that the overall assembly efficiency is accelerated, the magnetic force of the neodymium magnet effectively prevents the slippage of parts, and the safety and reliability of the whole device in the use process are ensured; and the hexagonal buffer pads in the hexagonal grooves can effectively absorb impact force generated when the neodymium magnets are attracted to the connecting positions.

Description

TECHNICAL FIELD

[0001] The utility model relates to the screw field especially relates to a rubber -coated screw. BACKGROUND

[0002] Screw is a common and important component in mechanical engineering, usually composed of a helical rotating element, aiming to effectively transmit power, transport materials or realize certain mechanical movement. Its basic structure is a shaft with a helical shape, which can generate a certain propulsion force when rotating, and the main function is to push or change the position of fluid or solid matter through rotational movement. As a key component in mechanical engineering, screw has been widely used in power transmission systems, high-voltage transformers and new energy storage devices (such as all-vanadium redox flow battery stacks). In the integration of the stack, the screw needs to be in contact with corrosive chemicals for a long time, and at the same time, it needs to withstand high-frequency vibration and electromagnetic interference.

[0003] The inventor found that the existing technology has the following problems in the process of implementing the present application: The electrolyte inside the stack can cause corrosion of the metal screw, affecting the stability of power transmission. The existing screw surface is only coated with a coating to ensure the corrosion resistance of the screw. Although the coating can provide a certain corrosion resistance, the wear resistance and impact resistance of the coating are often limited, and it can be easily worn and peeled off after a long time of use, causing the screw to be exposed to the corrosive environment and accelerating its damage. Moreover, the screw is directly installed at the connection of the device without auxiliary connection, which may cause the screw to loosen and displace during operation, reducing the stability and safety of the connection and increasing the risk of equipment failure. Moreover, the screw is more vulnerable when subjected to a large shock or impact force, which may cause damage to the connection between the screw and the device, and even cause the entire system to fail.

[0004] Therefore, the skilled person in the art provides a rubber-coated screw to solve the problems raised in the background art. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art and provides a rubber-coated screw. The new utility model uses a neodymium magnet to enhance the stable connection at the connection with the device.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A rubber-coated screw includes a screw body, a hexagonal groove is formed at the lower end of the screw body, a placement groove is formed at the inner top of the hexagonal groove, the inner wall of the placement groove is coated with epoxy resin, a neodymium magnet is fixedly arranged at the inner end of the placement groove, and a hexagonal buffer pad is fixedly arranged at the inner top of the hexagonal groove.

[0008] Further, the screw body comprises a wear-resistant layer, an inner end of the wear-resistant layer is provided with a buffer layer, and an inner end of the buffer layer is provided with a bonding layer.

[0009] Further, the wear-resistant layer is made of ultra-high molecular weight polyethylene, and the buffer layer is made of thermoplastic elastomer.

[0010] Further, the bonding layer is made of thermoplastic polyurethane.

[0011] Further, the hexagonal buffer pad is located at a lower end of the neodymium magnet.

[0012] The utility model has the advantages of the following beneficial effects:

[0013] 1, the utility model discloses a kind of rubber-coated screws, when fixing the device, first aligning hexagonal groove connecting portion, neodymium magnet can adsorb connecting portion, hexagonal buffer pad in hexagonal groove effectively absorbs the impact force generated when neodymium magnet adsorbs connecting portion, avoid damage to device and connecting portion, simultaneously, using the adsorption characteristics of neodymium magnet, the preliminary docking of equipment can be conveniently and quickly carried out, to speed up the overall assembly efficiency, therefore in power transmission system and electric pile integration, the use of neodymium magnet not only improves the assembly efficiency of device, also ensures the stability and security of system in operation, in power transmission process, frequent maintenance and overhaul are inevitable, the design of neodymium magnet makes disassembly and reassembly more convenient, greatly reduce system downtime, while reducing maintenance cost.

[0014] 2, the utility model discloses a kind of rubber-coated screws, the adhesive layer of screw body is made of thermoplastic polyurethane, can effectively improve and the bonding strength of metal screw, reduce peeling risk, ensure the stability and durability of material, buffer layer is made of thermoplastic elastomer, provide excellent elastic buffer, can effectively absorb vibration and impact, reduce overall vibration and noise, wear-resistant layer is made of ultra-high molecular weight polyethylene, with very high wear resistance and self-lubricating, reduce wear, improve service life. In injection molding process, first injection bonding layer thermoplastic polyurethane, buffer layer thermoplastic elastomer is injected in the same mold, and the thermoplastic elastomer of molten thermoplastic elastomer and thermoplastic polyurethane surface occurs thermal bonding, finally injection wear-resistant layer ultra-high molecular weight polyethylene, by mold high temperature and pressure make it and thermoplastic elastomer adhere. Rubber-coated layer at the outer end of screw body is located screw surface, using the method of accurate control temperature and pressure, eliminate bubble and fault, realize high-quality injection molding, the thickness of rubber-coated layer is controlled within ±0.05mm, to adapt to high-precision transmission scene. Outer layer of ultra-high molecular weight polyethylene material is subjected to chemical medium resistance test, including acid, alkali, organic solvent etc., and shows excellent tolerance capacity. The acid and alkali corrosion resistance range of the material is very extensive, so that it can still maintain stable performance and long service life in harsh chemical environment. Compared with ordinary rubber-coated material, the service life of ultra-high molecular weight polyethylene material is increased by more than three times, greatly reducing replacement frequency and maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the axial schematic view of the screw body of the utility model;

[0016] Figure 2 It is the overall cross-sectional schematic view of the utility model;

[0017] Figure 3 It is the A place local schematic view of the utility model Figure 2 .

[0018] Figure 4 It is the internal structure schematic view of the screw body of the utility model.

[0019] Legend:

[0020] 1, screw body; 2, hexagonal groove; 3, placing groove; 4, epoxy resin; 5, neodymium magnet; 6, hexagonal buffer pad; 101, wear-resistant layer; 102, buffer layer; 103, adhesive layer. DETAILED DESCRIPTION

[0021] With reference to the drawings in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the ordinary skilled in the art without creative labor are within the protection scope of the present application.

[0022] With reference to Figure 1 , Figure 2 , Figure 3 An embodiment provided by the present application:

[0023] The encapsulated screw rod comprises a screw rod body 1, a hexagonal groove 2 is formed at the lower end of the screw rod body 1, a placing groove 3 is formed at the inner top of the hexagonal groove 2, the inner wall of the placing groove 3 is coated with epoxy resin 4, a neodymium magnet 5 is fixedly arranged at the inner end of the placing groove 3, and a hexagonal buffer pad 6 is fixedly arranged at the inner top of the hexagonal groove 2 and located at the lower end of the neodymium magnet 5.

[0024] Specifically, when the device is fixed, first, the hexagonal groove 2 is aligned with the connection, the neodymium magnet 5 can adsorb the connection, and the hexagonal buffer pad 6 in the hexagonal groove 2 effectively absorbs the impact force generated when the neodymium magnet 5 adsorbs the connection, thereby avoiding damage to the device and the connection. At the same time, by using the adsorption characteristics of the neodymium magnet 5, the preliminary docking of the equipment can be conveniently and quickly performed, thereby accelerating the overall assembly efficiency. During the connection process, the magnetic force of the neodymium magnet 5 effectively prevents the components from slipping, thereby ensuring the safety and reliability of the entire device during use. In addition, the use of the neodymium magnet 5 makes the connection convenient to disassemble when needed, thereby facilitating the maintenance and inspection in the later period. It should be noted that the neodymium magnet 5 of the device only has an auxiliary function and cannot be directly fixed with the connection. The height of the neodymium magnet 5 is the same as the height of the placing groove 3, and the neodymium magnet 5 will not fall off under long-term vibration.

[0025] With reference to Figure 4 The screw rod body 1 comprises a wear-resistant layer 101, a buffer layer 102 is arranged at the inner end of the wear-resistant layer 101, and a bonding layer 103 is arranged at the inner end of the buffer layer 102, the wear-resistant layer 101 is made of ultrahigh molecular weight polyethylene, the buffer layer 102 is made of thermoplastic elastomer, and the bonding layer 103 is made of thermoplastic polyurethane.

[0026] Specifically, the adhesive layer 103 of the screw body 1 is made of thermoplastic polyurethane, which can effectively improve the bonding strength with the metal screw, reduce the risk of peeling, and ensure the stability and durability of the material; the buffer layer 102 is made of thermoplastic elastomer, which provides excellent elastic buffer and can effectively absorb vibration and impact, reducing overall vibration and noise; the wear-resistant layer 101 is made of ultra-high molecular weight polyethylene, which has extremely high wear resistance and self-lubricity, reducing wear and improving service life. During the injection molding process, the thermoplastic polyurethane of the adhesive layer 103 is first injected, then the thermoplastic elastomer of the buffer layer 102 is injected in the same mold, the molten thermoplastic elastomer is thermally bonded to the surface of the thermoplastic polyurethane, and finally the ultra-high molecular weight polyethylene of the wear-resistant layer 101 is injected and bonded to the thermoplastic elastomer through high temperature and pressure of the mold. The encapsulating layer at the outer end of the screw body 1 is located on the surface of the screw, which uses precise temperature and pressure control methods to eliminate bubbles and faults, achieving high-quality injection molding. The thickness tolerance of the encapsulating layer is controlled within ±0.05mm to adapt to high-precision transmission scenarios. The outer layer of ultra-high molecular weight polyethylene material has passed chemical medium resistance tests, including acid, alkali, organic solvents, etc., showing excellent resistance. The material has a very wide range of acid and alkali corrosion resistance, allowing it to maintain stable performance and a long service life in harsh chemical environments. Compared with ordinary encapsulating materials, the service life of ultra-high molecular weight polyethylene material is more than three times longer, greatly reducing replacement frequency and maintenance costs.

[0027] Working principle: When fixing the device, first align the hexagonal groove 2 with the connection, and the neodymium magnet 5 can attract the connection. The hexagonal buffer pad 6 in the hexagonal groove 2 effectively absorbs the impact force generated when the neodymium magnet 5 attracts the connection, preventing damage to the device and the connection. It is important to note that the neodymium magnet 5 of the device is only for auxiliary use and cannot be directly fixed to the connection.

[0028] Secondly, the adhesive layer 103 of the screw body 1 is made of thermoplastic polyurethane, which can effectively improve the bonding strength with the metal screw, the buffer layer 102 is made of thermoplastic elastomer, which can effectively absorb vibration and impact, the wear-resistant layer 101 is made of ultra-high molecular weight polyethylene, which can reduce wear, during the injection molding process, the thermoplastic polyurethane of the adhesive layer 103 is first injected, then the thermoplastic elastomer of the buffer layer 102 is injected in the same mold, the molten thermoplastic elastomer is thermally bonded to the surface of the thermoplastic polyurethane, and finally the ultra-high molecular weight polyethylene of the wear-resistant layer 101 is injected and bonded to the thermoplastic elastomer through high temperature and pressure of the mold, the encapsulating layer at the outer end of the screw body 1 is located on the surface of the screw, which uses precise temperature and pressure control methods to eliminate bubbles and faults, achieving high-quality injection molding. The thickness tolerance of the encapsulating layer is controlled within ±0.05mm to adapt to high-precision transmission scenarios. The outer layer of ultra-high molecular weight polyethylene material has passed chemical medium resistance tests, including acid, alkali, organic solvents, etc., showing excellent resistance.

[0029] It should be pointed out finally that the above only for the preferred embodiments of the present application and is not intended to limit the present application, although the foregoing embodiments of the present application have been described in detail, for those skilled in the art, it still can be modified for the foregoing each embodiment of the technical solutions recorded, or for some of the technical features of the equivalent replacement, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included within the scope of the present application.

Claims

1. A rubber-coated screw, comprising a screw body (1), characterized in that: The lower end of the screw body (1) is provided with a hexagonal groove (2), and the top of the hexagonal groove (2) is provided with a placement groove (3). The inner wall of the placement groove (3) is coated with epoxy resin (4). A neodymium magnet (5) is fixedly installed at the inner end of the placement groove (3), and a hexagonal buffer pad (6) is fixedly installed at the top of the hexagonal groove (2).

2. The rubber-coated screw according to claim 1, characterized in that: The screw body (1) includes a wear-resistant layer (101), a buffer layer (102) is provided at the inner end of the wear-resistant layer (101), and an adhesive layer (103) is provided at the inner end of the buffer layer (102).

3. The rubber-coated screw according to claim 2, characterized in that: The wear-resistant layer (101) is made of ultra-high molecular weight polyethylene, and the buffer layer (102) is made of thermoplastic elastomer.

4. The rubber-coated screw according to claim 2, characterized in that: The adhesive layer (103) is made of thermoplastic polyurethane.

5. The rubber-coated screw according to claim 1, characterized in that: The hexagonal buffer pad (6) is located at the lower end of the neodymium magnet (5).

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