Truck tire inflation tube

Abstract

The utility model belongs to the technical field of inflation pipelines, and provides a truck tire inflation pipe which comprises a pipe body and a connecting mechanism. The pipe body comprises an inner pipe, a reinforcing layer and a protective layer which are sequentially arranged from inside to outside, the inner pipe is a polytetrafluoroethylene pipe, the reinforcing layer is a metal wire braid layer wrapping the surface of the inner pipe, and the protective layer is a high-strength fiber braid layer or a polymer wrapping layer wrapping the surface of the reinforcing layer; the connecting mechanism comprises an air source connector arranged at one end of the inner pipe and an air valve connector arranged at the other end of the inner pipe, and an air pressure adjusting valve is arranged on the air source connector. By arranging the polytetrafluoroethylene inner pipe, the metal braid layer wrapping the surface of the inner pipe and the protective layer covering the metal braid layer, the pressure resistance, durability and aging resistance of the air pipe can be improved, the air pressure adjusting valve is arranged on the air source connector, the inflation air pressure can be adjusted according to needs, and the inflation efficiency is improved. Explosion caused by overshoot of the tire due to overlarge inflation pressure is prevented, and the safety performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air-inflating pipes, in particular to an air-inflating pipe for truck tires. Background Art

[0002] Nowadays, my country is in a period of rapid economic development. Truck transportation has played a huge role as a major mode of transportation. In recent years, there have been frequent accidents of tire explosions during inflation. When a tire explodes, it is very easy to cause casualties or property losses nearby. The large tires used in most models of trucks are even larger in size, and the power of the explosion will also increase accordingly. Therefore, high requirements are placed on the durability, pressure resistance and safety of the inflation tubes used to inflate truck tires.

[0003] At present, the materials used for truck inflation tubes on the market are rubber or silicone, which have weak pressure resistance. In addition, ordinary rubber or silicone tubes are prone to aging and easily lead to rupture and leakage, and have poor durability. In addition, in order to ensure safety, air compressors and gas tanks used as air sources are generally equipped with pressure sensors, which will automatically stop adding air after delivering a certain pressure. However, the pressure during the inflation process is generally not adjustable. Excessive pressure during the inflation process has a greater impact on the safety of the tire and is likely to cause a tire explosion.

[0004] The technical problem to be solved by the utility model is how to solve the problems that the existing truck tire inflation tube has poor pressure resistance and durability and low safety performance. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model aims to provide a truck tire inflation tube, which has the characteristics of simple structure, good durability and pressure resistance, and adjustable air pressure.

[0006] The technical solution adopted by the utility model is: a truck tire inflation tube, comprising a tube body and a connecting mechanism;

[0007] The tube body includes an inner tube, a reinforcement layer and a protective layer arranged in sequence from the inside to the outside, the inner tube is a polytetrafluoroethylene tube, the reinforcement layer is a metal wire braided layer wrapped on the surface of the inner tube, and the protective layer is a high-strength fiber braided layer or a polymer coating layer wrapped on the surface of the reinforcement layer;

[0008] The connecting mechanism comprises an air source joint arranged at one end of the inner tube and an air valve joint arranged at the other end of the inner tube, and an air pressure regulating valve is arranged on the air source joint.

[0009] The truck tire inflation tube of the present application improves the corrosion resistance and temperature resistance of the inflation tube by providing an inner tube made of polytetrafluoroethylene. Since polytetrafluoroethylene has good waterproof, non-stick and self-lubricating properties, it can prevent impurities from adhering to the inner tube and affecting the gas transmission efficiency. The metal wire braided layer is wrapped around the surface of the inner tube to improve the strength of the tube body and effectively improve the impact resistance and toughness of the gas tank. The protective layer can protect the metal wire braided layer and improve the anti-aging performance of the tube body. An air pressure regulating valve is provided on the air source joint to adjust the inflation pressure as needed to prevent the tire from overshooting and exploding due to excessive inflation pressure, thereby improving safety performance and avoiding interference of the air pressure regulating valve with the connection between the valve joint and the tire valve. At the same time, it is also convenient to operate the air pressure regulating valve to adjust the inflation pressure.

[0010] In some embodiments, the metal wire braid is a stainless steel wire braid.

[0011] By adopting the above technical solution, the stainless steel wire braided layer has good corrosion resistance and pressure resistance, which can improve the hardness, pressure resistance, bending resistance and folding resistance of the trachea.

[0012] In some embodiments, the high-strength fiber braided layer is a polyester braided layer.

[0013] By adopting the above technical solution, polyester fiber is a new high-tech synthetic fiber with excellent properties such as ultra-high strength, high modulus, high temperature resistance, acid and alkali resistance, light weight, good insulation and anti-aging properties, and a long life cycle, thereby increasing the service life of the trachea.

[0014] In some embodiments, the polymer coating layer is a TPU coating layer.

[0015] By adopting the above technical solutions, TPU has excellent high tension, high pulling force, strong and aging resistance characteristics, and is a mature environmentally friendly material. It has the characteristics of high strength, good toughness, wear resistance, cold resistance, oil resistance, water resistance, aging resistance, and weather resistance that other plastic materials cannot match. At the same time, it has many excellent functions such as high waterproofness, moisture permeability, windproof, cold resistance, antibacterial, mildew resistance, warmth retention, UV resistance, and energy release. Therefore, by coating TPU on the surface of the metal wire braided layer, the service life of the trachea can be extended.

[0016] In some embodiments, the gas source connector also includes a gas source connecting pipe and a connecting nut, one end of the gas source connecting pipe is connected to the inner pipe, and the other end extends in a direction away from the inner pipe, the connecting nut is sleeved on the end of the gas source connecting pipe away from the inner pipe, and the connecting nut is clamped on the gas source connecting pipe, and the air pressure regulating valve is installed on the gas source connecting pipe for adjusting the flow rate of the gas source connecting pipe.

[0017] By adopting the above technical solution, the connecting nut can reliably connect the gas source and the gas source connecting pipe, thereby preventing the gas source connecting pipe from being separated from the gas source during the inflation process.

[0018] In some embodiments, the gas source connector further includes a sealing ring, which is sleeved on the gas source connecting pipe and abuts against the connecting nut.

[0019] By adopting the above technical solution, air leakage at the connection point between the air source connecting pipe and the air source can be avoided, thereby avoiding pressure loss.

[0020] In some embodiments, the gas source connector further includes a first sleeve, which is sleeved on the outer surface of the protective layer, and the gas source connecting tube transmits the first sleeve to connect with the inner tube.

[0021] By adopting the above technical solution, the first sleeve can protect the end surfaces of the reinforcing layer and the protective layer, avoid exposure of the end surfaces of the protective layer and the reinforcing layer, improve the appearance, and at the same time prevent the metal wire braided layer from hurting the inflation operator.

[0022] In some embodiments, the valve joint includes a valve connecting tube and a movable nut, one end of the valve connecting tube is connected to the inner tube, the movable nut is sleeved on the end of the valve connecting tube away from the inner tube, and the movable nut is clamped with the valve connecting tube.

[0023] By adopting the above technical solution, the reliability of the connection between the valve connecting pipe and the valve can be improved, and the valve connecting pipe and the valve can be prevented from separating during the gas filling process.

[0024] In some embodiments, the valve joint further includes a second sleeve, which is sleeved on the outer surface of the protective layer, and the valve connecting pipe passes through the second sleeve and is connected to the inner pipe.

[0025] By adopting the above technical solution, the end faces of the reinforcing layer and the protective layer can be protected to avoid exposure of the end faces of the protective layer and the reinforcing layer, thereby improving the aesthetic appearance. At the same time, the metal wire braided layer can be prevented from harming the inflation operator.

[0026] In some embodiments, the valve connecting pipe is a bent pipe.

[0027] By adopting the above technical solution, the operation of connecting the valve connecting pipe to the valve can be facilitated. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of a truck tire inflation tube of a preferred embodiment of the utility model;

[0029] Figure 2 for Figure 1 A schematic diagram of the axial cross-sectional structure of a truck tire inflation tube is shown.

[0030] In the figure: 100, truck tire inflation tube; 10, tube body; 11, inner tube; 12, reinforcement layer; 13, protective layer; 20, connecting mechanism; 21, air source connector; 211, air source connecting pipe; 212, connecting nut; 213, air pressure regulating valve; 214, first sleeve; 215, sealing ring; 22, valve connector; 221, valve connecting pipe; 222, movable nut; 223, second sleeve. DETAILED DESCRIPTION

[0031] 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.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. When the number of an element is referred to as "plurality", it may be any number of two or more. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0034] See also Figure 1 to Figure 2, a truck tire inflation tube 100 of a preferred embodiment of the utility model, comprising a tube body 10, and a connecting mechanism 20 connecting the tube body 10 with an external air source and an air valve; the tube body 10 comprises an inner tube 11, a reinforcing layer 12 and a protective layer 13 arranged in sequence from the inside to the outside, the inner tube 11 is a polytetrafluoroethylene tube, the reinforcing layer 12 is a metal wire braided layer wrapped on the surface of the inner tube 11, and the protective layer 13 is a high-strength fiber braided layer or a polymer coating layer wrapped on the surface of the reinforcing layer 12; the connecting mechanism 20 comprises an air source connector 21 arranged at one end of the inner tube 11, and an air valve connector 22 arranged at the other end of the inner tube 11, and an air pressure regulating valve 213 is arranged on the air source connector 21. The truck tire inflation tube 100 of the present application has the characteristics of simple structure, good durability and pressure resistance, and adjustable air pressure.

[0035] In this embodiment, the metal wire braided layer is a stainless steel wire braided layer, because the stainless steel wire braided layer has good corrosion resistance and pressure resistance, and can improve the hardness, pressure resistance, bending resistance and folding resistance of the air pipe.

[0036] In one embodiment, the high-strength fiber braided layer is a polyester braided layer. Polyester fiber is a new type of high-tech synthetic fiber with excellent properties such as ultra-high strength, high modulus, high temperature resistance, acid and alkali resistance, light weight, good insulation and anti-aging properties, and a long life cycle, thereby increasing the service life of the trachea. In other embodiments, the high-strength fiber braided layer can also be made of other existing polymer materials with equivalent properties, such as aramid.

[0037] In one embodiment, the polymer coating layer is a TPU coating layer. TPU (thermoplastic polyurethane elastomer) has excellent high tension, high pulling force, strong and aging resistance, and is a mature environmentally friendly material. It has the characteristics of high strength, good toughness, wear resistance, cold resistance, oil resistance, water resistance, aging resistance, and weather resistance that other plastic materials cannot match. At the same time, it has many excellent functions such as high waterproofness, moisture permeability, windproof, cold resistance, antibacterial, mildew resistance, warmth retention, UV resistance, and energy release. Therefore, by coating TPU on the surface of the metal wire braided layer, the service life of the trachea can be increased. In other embodiments, the polymer coating layer can also use existing polymer materials with equivalent performance, such as TPEE (thermoplastic polyester elastomer) or PVC (polyvinyl chloride).

[0038] like Figure 1 and Figure 2As shown, the gas source connector 21 also includes a gas source connecting pipe 211 and a connecting nut 212. One end of the gas source connecting pipe 211 is connected to the inner pipe 11, and the other end extends in a direction away from the inner pipe 11. The connecting nut 212 is sleeved on the end of the gas source connecting pipe 211 away from the inner pipe 11, and the connecting nut 212 is clamped with the gas source connecting pipe 211. The air pressure regulating valve 213 is installed on the gas source connecting pipe 211 to adjust the flow rate of the gas source connecting pipe 211. The connecting nut 212 can reliably connect the gas source and the gas source connecting pipe 211 to prevent the gas source connecting pipe 211 from being separated from the gas source during the inflation process.

[0039] Furthermore, the gas source connector 21 further includes a sealing ring 215, which is sleeved on the gas source connecting pipe 211, and the sealing ring 215 abuts against the connecting nut 212. This can prevent gas leakage at the connection between the gas source connecting pipe 211 and the gas source, and avoid pressure loss. In this embodiment, the sealing ring 215 is an O-ring.

[0040] Furthermore, the gas source connector 21 further includes a first sleeve 214, which is sleeved on the outer surface of the protective layer 13, and the gas source connecting tube 211 transmits the first sleeve 214 to connect with the inner tube 11. The first sleeve 214 can protect the end surfaces of the reinforcing layer 12 and the protective layer 13, prevent the end surfaces of the protective layer 13 and the reinforcing layer 12 from being exposed, improve the appearance, and prevent the metal wire braided layer from hurting the inflation operator.

[0041] like Figure 2 As shown, the valve joint 22 includes a valve connecting pipe 221 and a movable nut 222. One end of the valve connecting pipe 221 is connected to the inner pipe 11. The movable nut 222 is sleeved on the end of the valve connecting pipe 221 away from the inner pipe 11, and the movable nut 222 is engaged with the valve connecting pipe 221. The reliability of the connection between the valve connecting pipe 221 and the valve can be improved to prevent the valve connecting pipe 221 from separating from the valve during the gas filling process.

[0042] Furthermore, the valve joint 221 further includes a second sleeve 223, which is sleeved on the outer surface of the protective layer 13, and the valve connecting tube 221 passes through the second sleeve 223 and is connected to the inner tube 11. The second sleeve 223 has the same function as the first sleeve 214, and can protect the end surfaces of the reinforcing layer 12 and the protective layer 13, prevent the end surfaces of the protective layer 13 and the reinforcing layer 12 from being exposed, improve the appearance, and prevent the metal wire braided layer from hurting the inflation operator.

[0043] In order to ensure the sealing effect of the valve joint 22 , a sealing ring 215 is also provided between the movable nut 222 and the valve connecting pipe 221 .

[0044] In this embodiment, a valve core is disposed on one end of the valve connecting tube 221 and the air source connecting tube 211 away from the inner tube 11 .

[0045] Optionally, the valve connecting pipe 221 is a curved pipe. In this embodiment, the valve connecting pipe 221 is a U-shaped pipe. This arrangement can facilitate the operation when the valve connecting pipe 221 is connected to the valve. In other embodiments, the valve connecting pipe 221 can also be set as a straight pipe.

[0046] The manufacturing process of the truck tire inflation tube 100 of the present application is as follows: first, a polytetrafluoroethylene inner tube 11 is manufactured by a tube pushing machine; then, a metal mesh woven from stainless steel wire is woven on the outer surface of the polytetrafluoroethylene inner tube 11 on a braiding machine as a reinforcement layer 12; then, a layer of woven mesh woven from polymer fibers is woven outside the metal wire braiding layer, or a layer of TPU glue is wrapped outside the metal wire braiding layer by a coating machine to obtain a protective layer 13; then, the above-mentioned tube body 10 is cut to the required fixed length by a cutting machine; finally, an air source connector 21 is installed at one end of the fixed-length inner tube 11, and a valve connector 22 is installed at the other end; the air source connector 21 and the valve connector 22 are crimped onto the tube body 10 by a crimping machine to ensure that they become a whole. In order to ensure the reliability of the connection, the air source connecting pipe 211 and the valve connecting pipe 221 should be inserted into the inner tube 11. When in use, the valve connector 22 is connected to the valve, the air source connector 21 is connected to the air source, and then the inflation pressure is adjusted through the air pressure regulating valve 213, and then the air source is started to inflate the tire.

[0047] The truck tire inflation tube 100 of the present application has the advantages of simple and compact structure, convenient use, controllable inflation pressure, high cost performance, safety and environmental protection. By setting the inner tube 11 of polytetrafluoroethylene, the corrosion resistance and temperature resistance of the inflation tube are improved, and because polytetrafluoroethylene has good waterproof, non-stick and self-lubricating properties, it can prevent impurities from adhering to the inner tube 11 and affecting the gas transmission efficiency. The metal wire braided layer is wrapped on the surface of the inner tube 11 to improve the strength of the tube body 10 and effectively improve the impact resistance and toughness of the gas tank. The protective layer 13 can protect the metal wire braided layer and improve the anti-aging performance of the tube body 10. In addition, an air pressure regulating valve 213 is set on the air source connector 21, and the inflation pressure can be adjusted as needed to prevent the tire from overshooting and exploding due to excessive inflation pressure, improve safety performance, and avoid the air pressure regulating valve 213 from interfering with the connection between the valve connector 22 and the tire valve. At the same time, it is also convenient to operate the air pressure regulating valve 213 to adjust the inflation pressure.

[0048] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A truck tire inflation tube (100), comprising a tube body (10) and a connecting mechanism (20), characterized in that: The tube body (10) comprises an inner tube (11), a reinforcement layer (12) and a protective layer (13) which are arranged in sequence from the inside to the outside, the inner tube (11) being a polytetrafluoroethylene tube, the reinforcement layer (12) being a metal wire braided layer wrapped on the surface of the inner tube (11), and the protective layer (13) being a high-strength fiber braided layer or a polymer coating layer wrapped on the surface of the reinforcement layer (12); The connecting mechanism (20) comprises an air source connector (21) arranged at one end of the inner tube (11), and an air valve connector (22) arranged at the other end of the inner tube (11), and an air pressure regulating valve (213) is arranged on the air source connector (21).

2. The truck tire inflation tube (100) according to claim 1, characterized in that: The metal wire braided layer is a stainless steel wire braided layer.

3. The truck tire inflation tube (100) according to claim 1, characterized in that: The high-strength fiber braided layer is a polyester braided layer.

4. The truck tire inflation tube (100) according to claim 1, characterized in that: The polymer coating layer is a TPU coating layer.

5. The truck tire inflation tube (100) according to claim 1, characterized in that: The gas source connector (21) further comprises a gas source connecting pipe (211) and a connecting nut (212); one end of the gas source connecting pipe (211) is in communication with the inner pipe (11), and the other end extends in a direction away from the inner pipe (11); the connecting nut (212) is sleeved on the end of the gas source connecting pipe (211) away from the inner pipe (11), and the connecting nut (212) is snap-fitted to the gas source connecting pipe (211); the gas pressure regulating valve (213) is mounted on the gas source connecting pipe (211) and is used to adjust the flow rate of the gas source connecting pipe (211).

6. The truck tire inflation tube (100) according to claim 5, characterized in that: The gas source connector (21) further comprises a sealing ring (215), wherein the sealing ring (215) is sleeved on the gas source connecting pipe (211), and the sealing ring (215) abuts against the connecting nut (212).

7. The truck tire inflation tube (100) according to claim 5, characterized in that: The gas source connector (21) further comprises a first sleeve (214), wherein the first sleeve (214) is sleeved on the outer surface of the protective layer (13), and the gas source connecting pipe (211) transmits the first sleeve (214) to connect with the inner pipe (11).

8. The truck tire inflation tube (100) according to claim 1, characterized in that: The valve joint (22) comprises a valve connecting tube (221) and a movable nut (222); one end of the valve connecting tube (221) is connected to the inner tube (11); the movable nut (222) is sleeved on one end of the valve connecting tube (221) away from the inner tube (11); and the movable nut (222) is clamped with the valve connecting tube (221).

9. The truck tire inflation tube (100) according to claim 8, characterized in that: The valve joint (22) further comprises a second sleeve (223), wherein the second sleeve (223) is sleeved on the outer surface of the protective layer (13), and the valve connecting pipe (221) passes through the second sleeve (223) and is connected to the inner pipe (11).

10. The truck tire inflation tube (100) according to claim 8, characterized in that: The valve connecting pipe (221) is a bent pipe.

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