CN111114203A - A closed inner support airless tire and its production process - Google Patents

A closed inner support airless tire and its production process Download PDF

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Publication number
CN111114203A
CN111114203A CN202010068993.1A CN202010068993A CN111114203A CN 111114203 A CN111114203 A CN 111114203A CN 202010068993 A CN202010068993 A CN 202010068993A CN 111114203 A CN111114203 A CN 111114203A
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China
Prior art keywords
tire
inner support
hub
tire body
main body
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Pending
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CN202010068993.1A
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Chinese (zh)
Inventor
夏文俊
余承阳
夏阳俊
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Suheng Hangzhou Technology Co ltd
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Zhejiang Peiyi Technology Co ltd
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Priority to CN202010068993.1A priority Critical patent/CN111114203A/en
Publication of CN111114203A publication Critical patent/CN111114203A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C7/00Non-inflatable or solid tyres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/02Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C39/10Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60BVEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B21/00Rims
    • B60B21/10Rims characterised by the form of tyre-seat or flange, e.g. corrugated
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60BVEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00Hubs
    • B60B27/02Hubs adapted to be rotatably arranged on axle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2030/00Pneumatic or solid tyres or parts thereof
    • B29L2030/006Solid tyres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C7/00Non-inflatable or solid tyres
    • B60C2007/005Non-inflatable or solid tyres made by casting, e.g. of polyurethane

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

本发明公开了一种封闭内支撑式无气轮胎及其生产工艺,封闭内支撑式无气轮胎包括轮毂、内支撑件和轮胎主体,轮胎主体装配在轮毂上,两者的装配结合面上通过设置凹凸结构进行周向方向的定位,内支撑件采用空心聚氨酯管首尾连接制成的圆环形件,内支撑件置于轮胎主体内,并环绕轮毂;内支撑件至少设置两个,沿轮胎主体的轴线方向依次布置;轮胎主体采用聚氨酯橡胶浇注成型为空心体结构,内支撑件置于轮胎主体的内部空腔中。本申请将内支撑件、圆环形聚氨酯发泡体、高强度涤纶网格布均浇注在轮胎主体的内部空腔中,全封闭包裹的轮胎主体接近现有的有气轮胎形状,但是比有气轮胎安全可靠,强度高,耐磨性好,寿命长,适合大规模的自动化生产加工。

Figure 202010068993

The invention discloses a closed inner support type airless tire and a production process thereof. The closed inner support type airless tire comprises a hub, an inner support and a tire body. The tire body is assembled on the hub, and the assembly joint surfaces of the two pass through The concave-convex structure is arranged for positioning in the circumferential direction. The inner support is made of a circular ring made of hollow polyurethane tubes connected end to end. The inner support is placed in the tire body and surrounds the hub; at least two inner supports are arranged along the tire. The axial directions of the main body are arranged in sequence; the main body of the tire is cast and formed into a hollow body structure by using polyurethane rubber, and the inner support is placed in the inner cavity of the main body of the tire. In the present application, the inner support, annular polyurethane foam, and high-strength polyester mesh are all poured into the inner cavity of the tire body. The fully enclosed and wrapped tire body is similar to the shape of the existing pneumatic tire, but it is more Pneumatic tires are safe and reliable, have high strength, good wear resistance and long service life, and are suitable for large-scale automated production and processing.

Figure 202010068993

Description

Closed inner support type airless tire and production process thereof
Technical Field
The invention relates to the technical field of tires, in particular to a closed inner support type airless tire and a production process thereof.
Background
At present, most tires used on vehicles are pneumatic tires, and the pneumatic tires keep the shape of the tires and obtain the buffer performance by filling compressed air into a closed space, but the shape of the original tires is difficult to keep when the pneumatic tires are punctured or torn by sharp objects, so that the driving safety of the vehicles is affected, and in addition, the pneumatic tires also have the risk of tire burst, and particularly once the tires of the vehicles running on a highway at a high speed are burst, serious traffic accidents can be caused.
In order to solve the problem, the existing airless tire is gradually researched and developed to ask the market, is a tire which does not depend on air to realize supporting force, does not need to be inflated and is not afraid of puncture, thereby fundamentally solving the problem of tire burst and saving a large amount of rubber materials. Such as a patent with an authorization publication number of CN106541785B, a patent with an authorization publication number of CN106541784B, a patent with an authorization publication number of CN106515313B and a patent with an authorization publication number of CN106739817B, all four of these patents disclose an airless tire comprising a rubber tread and spokes, the rubber tread is sleeved on the spoke, the spoke comprises a spoke outer ring, a spoke middle ring and a spoke inner ring, the outer ring of the spoke is fixedly connected with the middle ring of the spoke through the outer spoke, the middle ring of the spoke is fixedly connected with the inner ring of the spoke through the inner spoke, the thickness of the rubber tread in the airless tire is usually not thick, the damping and buffering performance of the airless tire mainly depends on the outer ring of the spoke, the middle ring of the spoke and the inner ring of the spoke in the spoke, and the spoke is easy to deform under pressure, and the production and manufacturing process is complex, soil is easy to enter the spoke when the wheel runs on a rainwater road, and the spoke is not easy to clean.
Accordingly, there is a need for improvements and optimizations to existing non-pneumatic tires.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides a closed inner support type airless tire which has the advantages of reasonable and simple structural design, good buffering performance, convenient processing and disassembly and is similar to an inflated tire in appearance, and provides a processing technology thereof.
The technical scheme adopted by the invention for solving the problems is as follows: the utility model provides an interior support formula airless tire of sealing, includes wheel hub, interior support piece and tire main part, the tire main part assembly is on wheel hub, carries out the location of circumferential direction through setting up concave-convex structure on the assembly faying surface between them, its characterized in that: the inner supporting piece is a circular ring-shaped piece made of hollow polyurethane pipes in an end-to-end connection mode, and is arranged in the tire main body and surrounds the wheel hub; at least two inner supporting pieces are arranged and are sequentially arranged along the axial direction of the tire main body; the tire main body is of a hollow body structure formed by pouring polyurethane rubber, and the inner supporting piece is arranged in an inner cavity of the tire main body.
Preferably, the airless tire further comprises an annular polyurethane foam body, wherein the annular polyurethane foam body is arranged in the inner cavity of the tire main body and surrounds the wheel hub, and is positioned between two adjacent inner supporting pieces, and the annular polyurethane foam body is arranged in the tire main body, so that the weight of the tire main body can be reduced, and a buffering effect can be realized.
Preferably, the high-strength polyester mesh cloth used for increasing the strength and the service life of the tire main body is wrapped outside the circular polyurethane foam body and the inner support piece.
Preferably, the hub is an aluminum alloy hub, a vehicle axle hole for mounting an automobile axle is formed in the center of the hub, one side of the hub is provided with a convex edge flange structure, the convex edge flange structure is used for axially positioning one side of the tire main body, and the other side of the hub is connected with a check ring through a bolt; the retaining ring presses the tire main body on the wheel hub to prevent the tire main body from axially moving.
Preferably, a spiral reinforcing rib is arranged in the pipe wall of the hollow polyurethane pipe adopted by the inner supporting piece, and the reinforcing rib is made of polyurethane or made of steel wires.
Preferably, a pattern is provided on a surface of the tire main body contacting the ground.
Preferably, the high-strength terylene grid cloth is formed by twisting one of strong viscose fiber, polyester fiber or polyamide fiber into a cord and then weaving the cord into the grid cloth, wherein the size of the grid is 17 x 17mm-22 x 22 mm.
The invention also provides a production process of the closed inner support type airless tire, which comprises a tire main body pouring process and an assembly process of the tire main body and a wheel hub.
The pouring process of the tire main body comprises the following steps:
the method comprises the following steps: preparing materials: determining the proportion of the polyurethane prepolymer to the curing agent according to the models of the tire main bodies for different vehicle types, mixing the polyurethane prepolymer and the curing agent, and uniformly stirring;
step two: preheating a mould to 80-90 ℃;
the die comprises an upper die, a lower die and a hydraulic die disc; the upper die is fixedly arranged, and the lower die is arranged on the hydraulic die plate; the hydraulic pressing die plate can be lifted up and down, and a die core is arranged at the center of the upper surface of the hydraulic pressing die plate; an ejector rod mechanism is arranged above the upper die, the lower die is a pouring area matched with the tire main body formed by combining at least ten arc plates, and the arc plates can be horizontally movably arranged on a hydraulic die plate;
step three: coating a release agent on the mold, and placing the inner support piece, the annular polyurethane foam body and the high-strength polyester mesh in the lower mold;
step four: melting the polyurethane prepolymer and the curing agent according to the temperature requirement, stirring in proportion and then pouring;
step five: placing for a certain time, pressurizing, vulcanizing for one time, wherein the temperature is about 120 ℃, and the vulcanizing time is half an hour;
step six: opening the mold: firstly, pulling the arc-shaped plate outwards in multiple directions, pushing the tire main body downwards by a mandril mechanism, simultaneously moving the hydraulic pressing die disc together with the lower die downwards, separating the tire main body from the upper die, and taking down the tire main body;
step seven: carrying out secondary vulcanization, wherein the heat preservation temperature is 90 ℃, and the heat preservation time is 10 hours; and obtaining a finished product of the tire main body.
The assembly process of the tire main body and the wheel hub comprises the following steps: the tire main body is sleeved on the wheel hub by using a press machine, the tire main body and the wheel hub are positioned in the circumferential direction through the concave-convex structure on the circumferential assembling and combining surface, then the check ring is fastened with the wheel hub through the bolt, the tire main body is positioned in the axial direction, and the tire main body is fastened on the wheel hub to complete the assembly.
Compared with the prior art, the invention has the following advantages and effects:
1. the tire main body is molded into a hollow body structure by adopting polyurethane rubber through casting, the inner supporting piece, the annular polyurethane foaming body and the high-strength polyester mesh fabric are all cast in an inner cavity of the tire main body, and the totally-enclosed wrapped tire main body is close to the existing shape of an air tire, but is safer and more reliable than the air tire, high in strength, good in wear resistance and long in service life, and is suitable for large-scale automatic production and processing;
2. the inner supporting piece arranged in the tire main body is a circular ring-shaped piece made of hollow polyurethane pipes in an end-to-end connection mode, spiral reinforcing ribs are arranged in the pipe walls of the hollow polyurethane pipes, and the structure of the hollow pipes is beneficial to improving the buffering and damping performance of the tire;
3. the circular polyurethane foam can reduce the weight of the tire main body and reduce the cost;
4. the tire main body is assembled on the hub in a sleeving manner, the circumferential assembly joint surface of the tire main body and the hub is positioned in the circumferential direction by arranging a concave-convex structure, and the positioning in the axial direction is a flange clamping type axial fixing manner formed by matching a flange arranged on one side of the hub with a retaining ring; the tire is characterized in that a concave-convex structure similar to a spline structure is adopted in the circumferential direction for positioning, and a flange clamping type is adopted in the axial direction for positioning, so that the mounting method is firm, the replacement and the disassembly are convenient, the universality and the practicability are realized, and the tire main body and the wheel hub which are released by foreign manufacturers are usually designed into a whole, so that the defect of high replacement cost exists;
5. the processing technology of the tire main body has reasonable step design, simple process and low manufacturing cost;
6. and finally, the mounting is finished, the flange of the wheel hub is close to the outer side of the vehicle, the main body of the tire is in the middle, and the retainer ring is arranged on the inner side of the vehicle, so that the visual effect is good, the appearance is attractive, and the looseness of the tire is not easy to generate.
Drawings
In order to illustrate the embodiments of the present invention or the solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a schematic structural diagram of the enclosed internal support type airless tire of the present embodiment.
Fig. 2 is a schematic structural view of the hub in the present embodiment.
Fig. 3 is a schematic cross-sectional view of the tire main body in this embodiment.
Fig. 4 is a schematic structural view of the inner support member in the present embodiment.
Fig. 5 is a schematic structural view of a mold in an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a hydraulic die assembly in an embodiment of the present invention.
Description of reference numerals: the tire comprises a tire main body 1, a hub 2, a convex edge flange structure 21, a retainer ring 3, high-strength polyester mesh cloth 4, an inner support 5, a reinforcing rib 51, an annular polyurethane foaming body 6, an upper die 7, a lower die 8, a hydraulic die closing disc 9, an ejector rod mechanism 10 and a bolt 11.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
Examples are given.
See fig. 1-6.
The embodiment is a closed inner support type airless tire, which comprises a hub 2, an inner support 5, an annular polyurethane foam 6 and a tire main body 1. The tire body 1 is provided with patterns on the surface contacting with the ground, the tire body 1 is assembled on the hub 2, and the assembling and combining surface of the tire body and the hub is provided with a concave-convex structure for positioning in the circumferential direction.
The inner support piece 5 is a circular ring-shaped piece made of hollow polyurethane pipes connected end to end, and the inner support piece 5 is arranged in the tire main body 1 and surrounds the wheel hub 2; the number of the inner supports 5 is at least two, and the inner supports are sequentially arranged along the axial direction of the tire main body 1, and the number of the inner supports 5 is determined according to the specific size and model of the tire and the type of the tire. The inner support 5 is made of hollow polyurethane tube, and the wall of the hollow polyurethane tube is provided with a spiral reinforcing rib 51, and the reinforcing rib 51 is made of polyurethane or made of steel wire. The hollow polyurethane tube is arranged in the tire main body 1, so that the buffering and shock-absorbing performance of the tire can be greatly improved.
The annular polyurethane foam 6 is arranged in the tire main body 1, surrounds the wheel hub 2 and is positioned between the two adjacent inner supporting pieces 5, and the annular polyurethane foam 6 is arranged in the tire main body 1, so that the weight of the tire main body 1 can be reduced.
The high-strength polyester mesh cloth 4 used for increasing the strength and the service life of the tire main body 1 is wrapped on the outer sides of the annular polyurethane foaming body 6 and the inner supporting piece 5, the high-strength polyester mesh cloth 4 is formed by twisting one of strong viscose fiber, polyester fiber or polyamide fiber into cord threads, and then weaving the cord threads into mesh cloth, and the size of the mesh is 20 x 20 mm. The high-strength terylene gridding cloth 4 has the advantages of high strength, torsion resistance and the like, and can greatly improve the strength of the tire main body 1 and prolong the service life.
The tire main body 1 adopts polyurethane rubber casting moulding to be hollow body structure to all pour interior support piece 5, ring shape polyurethane foaming body 6, high strength dacron net cloth 4 in the inside cavity of tire main body 1, the tire main body 1 of totally closed parcel is close current pneumatic tire shape, but than pneumatic tire safe and reliable, intensity is high, and the wearability is good, and is longe-lived, is fit for large-scale automated production and processing.
The wheel hub 2 is made of aluminum alloy, a wheel axle hole for mounting an automobile axle is formed in the center of the wheel hub 2, a convex edge flange structure 21 is arranged on one side of the wheel hub 2, the convex edge flange structure 21 is used for axially positioning one side of the tire main body 1, and the other side of the wheel hub 2 is connected with a check ring 3 through a bolt 11; the retainer ring 3 presses the tire main body 1 against the hub 2, preventing the tire main body 1 from being axially displaced. The tyre main body 1 is assembled on the wheel hub 2 in a sleeving manner, the circumferential assembly joint surface of the tyre main body and the wheel hub is positioned in the circumferential direction by arranging a concave-convex structure, and the positioning in the axial direction is a flange clamping type axial fixing manner formed by matching a flange arranged on one side of the wheel hub 2 with a retainer ring 3; the circumference direction adopts and is similar to spline structure concave-convex structure and fixes a position, and the axial direction adopts the flange clamp formula to fix a position, and this kind of mounting method is firm, changes easy dismounting, has the commonality, the practicality, and the tire main part 1 and the wheel hub 2 design as an organic whole usually that foreign manufacturer publishes have the shortcoming that the replacement cost is high.
The embodiment also discloses a die for producing the tire main body 1, which comprises an upper die 7, a lower die 8 and a hydraulic die closing disc 9; the upper die 7 is fixedly arranged, and the lower die 8 is arranged on the hydraulic die plate 9; the hydraulic die plate 9 can be lifted up and down, and a die core (not shown in the schematic diagram) is arranged at the center of the upper surface of the hydraulic die plate; an ejector rod mechanism 10 is arranged above the upper die 7, the lower die 8 is a pouring area matched with the tire main body 1 formed by combining eight arc plates, and the arc plates can be horizontally movably arranged on a hydraulic pressing die plate 9; considering that the pattern provided on the surface of the tire body 1 contacting the ground is not vertically upward, the eight arc plates are designed to be horizontally pulled away all around to ensure the integrity of the pattern.
In this embodiment, the production process of the enclosed inner support type airless tire includes a tire main body pouring process and an assembly process of the tire main body and the wheel hub.
The pouring process of the tire main body 1 comprises the following steps:
the method comprises the following steps: preparing materials: determining the proportion of the polyurethane prepolymer to the curing agent according to the types of the tire main bodies 1 used for different vehicle types, mixing the polyurethane prepolymer and the curing agent, and uniformly stirring;
step two: preheating a mould to 80-90 ℃;
the die comprises an upper die, a lower die and a hydraulic die disc; the upper die is fixedly arranged, and the lower die is arranged on the hydraulic die plate; the hydraulic pressing die plate can be lifted up and down, and a die core is arranged at the center of the upper surface of the hydraulic pressing die plate; an ejector rod mechanism is arranged above the upper die, the lower die is a pouring area matched with the tire main body 1 formed by combining at least ten arc plates, and the arc plates can be horizontally movably arranged on a hydraulic die plate;
step three: coating a release agent on the mold, and placing the inner support piece 5, the annular polyurethane foam 6 and the high-strength polyester mesh fabric 4 in the lower mold;
step four: melting the polyurethane prepolymer and the curing agent according to the temperature requirement, stirring in proportion and then pouring;
step five: placing for a certain time, pressurizing, vulcanizing for one time, wherein the temperature is about 120 ℃, and the vulcanizing time is half an hour;
step six: opening the mold: firstly, pulling the arc-shaped plate outwards in multiple directions, pushing the tire main body 1 downwards by a mandril mechanism, simultaneously moving the hydraulic pressing die disc together with the lower die downwards, separating the tire main body 1 from the upper die, and taking down the tire main body 1;
step seven: carrying out secondary vulcanization, wherein the heat preservation temperature is 90 ℃, and the heat preservation time is 10 hours; obtaining the finished product of the tyre body 1.
The assembly process of the tire main body and the wheel hub comprises the following steps: utilize the press with tire main part 1 suit on wheel hub 2, carry out the location of circumferential direction through concave-convex structure on the tire main part 1 and the 2 circumference assembly faying faces of wheel hub, then pass through bolt and wheel hub 2 fastening together retaining ring 3, carry out axial positioning to tire main part 1 to fasten tire main part 1 on wheel hub 2, accomplish the assembly.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an illustration of the structure of the present invention. All equivalent or simple changes in the structure, characteristics and principles of the invention are included in the protection scope of the patent. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims (8)

1.一种封闭内支撑式无气轮胎,包括轮毂、内支撑件和轮胎主体,所述轮胎主体装配在轮毂上,两者的装配结合面上通过设置凹凸结构进行周向方向的定位,其特征在于:所述内支撑件采用空心聚氨酯管首尾连接制成的圆环形件,内支撑件置于轮胎主体内,并环绕轮毂;所述内支撑件至少设置两个,沿轮胎主体的轴线方向依次布置;所述轮胎主体采用聚氨酯橡胶浇注成型为空心体结构,内支撑件置于轮胎主体的内部空腔中。1. A closed inner support type airless tire, comprising a hub, an inner support and a tire body, the tire body is assembled on the hub, and the two assembly surfaces are positioned in the circumferential direction by setting a concave-convex structure, which It is characterized in that: the inner support is a circular ring made of hollow polyurethane tubes connected end to end, the inner support is placed in the tire body and surrounds the wheel hub; at least two of the inner supports are arranged along the axis of the tire body. The directions are arranged in sequence; the tire body is cast and molded into a hollow body structure by using polyurethane rubber, and the inner support is placed in the inner cavity of the tire body. 2.根据权利要求1所述的封闭内支撑式无气轮胎,其特征在于:该无气轮胎还包括圆环形聚氨酯发泡体,圆环形聚氨酯发泡体置于轮胎主体的内部空腔中,并环绕轮毂,以及位于两个相邻的内支撑件之间。2 . The closed inner support airless tire according to claim 1 , wherein the airless tire further comprises an annular polyurethane foam, and the annular polyurethane foam is placed in the inner cavity of the tire main body. 3 . in and around the hub, and between two adjacent inner supports. 3.根据权利要求2所述的封闭内支撑式无气轮胎,其特征在于:所述圆环形聚氨酯发泡体以及内支撑件的外侧包裹一层用于增加轮胎主体强度和寿命的高强度涤纶网格布。3. The closed inner support airless tire according to claim 2, wherein the outer side of the annular polyurethane foam and the inner support is wrapped with a layer of high strength for increasing the strength and life of the tire body Polyester mesh. 4.根据权利要求1所述的封闭内支撑式无气轮胎,其特征在于:所述轮毂采用铝合金轮毂,轮毂中心处设置有用于安装汽车车轴的车轴孔,轮毂的一侧为凸边缘挡边结构,该凸边缘挡边结构用于对轮胎主体的一侧进行轴向定位,轮毂的另一侧通过螺栓连接有挡圈;所述挡圈将轮胎主体压紧在轮毂上,防止轮胎主体轴向移位。4. The enclosed inner support type airless tire according to claim 1, wherein the wheel hub adopts an aluminum alloy wheel hub, the center of the wheel hub is provided with an axle hole for installing an automobile axle, and one side of the wheel hub is a convex edge stopper The flange structure is used to axially position one side of the tire body, and the other side of the wheel hub is connected with a retaining ring through bolts; the retaining ring presses the tire body on the hub, preventing the tire body Axial displacement. 5.根据权利要求1所述的封闭内支撑式无气轮胎,其特征在于:所述内支撑件采用的空心聚氨酯管的管壁中设置有螺旋形的加强筋,所述加强筋采用聚氨酯材质制成或者采用钢丝。5 . The closed inner support type airless tire according to claim 1 , wherein the hollow polyurethane tube used for the inner support is provided with a spiral reinforcing rib in the tube wall, and the reinforcing rib is made of polyurethane material. 6 . Made of or made of steel wire. 6.根据权利要求1所述的封闭内支撑式无气轮胎,其特征在于:所述轮胎主体与地接触的面上设置有花纹。6 . The closed inner support type airless tire according to claim 1 , wherein the surface of the tire body in contact with the ground is provided with patterns. 7 . 7.根据权利要求3所述的封闭内支撑式无气轮胎,其特征在于:所述高强度涤纶网格布是采用强力粘胶纤维、聚酯纤维或聚酰胺纤维中的一种先加捻成帘子线,然后编织成网格布,网格的尺寸为17*17mm-22*22mm。7 . The closed inner support airless tire according to claim 3 , wherein the high-strength polyester mesh is made of a kind of strong viscose fiber, polyester fiber or polyamide fiber that is first twisted. 8 . It is made into cord, and then woven into mesh, the size of the mesh is 17*17mm-22*22mm. 8.一种如权利要求1-7任一权利要求所述的封闭内支撑式无气轮胎的生产工艺,其特征在于:包括轮胎主体浇注工艺,以及轮胎主体与轮毂的装配工艺;8. A production process of the closed inner support type airless tire according to any one of claims 1-7, characterized in that: it comprises a tire main body casting process and an assembly process of the tire main body and the wheel hub; 轮胎主体浇注工艺步骤如下:The steps of the tire body casting process are as follows: 步骤一:备料:根据用于不同车型的轮胎主体型号确定聚氨酯预聚体与固化剂的比例,将聚氨酯预聚体与固化剂进行混合并搅拌均匀;Step 1: Material preparation: Determine the ratio of the polyurethane prepolymer and the curing agent according to the main model of the tire used for different models, mix the polyurethane prepolymer and the curing agent and stir evenly; 步骤二:模具预热至80-90℃;Step 2: Preheat the mold to 80-90℃; 所述模具包括上模、下模和液压合模盘;所述上模固定设置,所述下模安装在液压合模盘上;液压合模盘能上下升降,其上面中心处安装有模芯;所述上模的上方设置有顶杆机构,下模是由至少十块弧形板组合在一起形成一个和轮胎主体相匹配的浇注区域,弧形板能水平移动地安装在液压合模盘上;The mold includes an upper mold, a lower mold and a hydraulic clamping plate; the upper mold is fixedly arranged, and the lower mold is installed on the hydraulic clamping plate; the hydraulic clamping plate can be lifted up and down, and a mold core is installed at the center of the upper surface The top of the upper mold is provided with a push rod mechanism, and the lower mold is composed of at least ten arc-shaped plates combined to form a pouring area that matches the main body of the tire, and the arc-shaped plate can be horizontally moved. superior; 步骤三:模具上加涂脱模剂,将内支撑件、圆环形聚氨酯发泡体、高强度涤纶网格布放在下模中;Step 3: Add a release agent to the mold, and place the inner support, annular polyurethane foam, and high-strength polyester mesh cloth in the lower mold; 步骤四:聚氨酯预聚体和固化剂按温度要求融化,按比例搅拌后进行浇注;Step 4: The polyurethane prepolymer and the curing agent are melted according to the temperature requirements, and poured after stirring in proportion; 步骤五:放置一定时间加压,一次硫化,温度为120℃左右,硫化时间半小时;Step 5: Put it for a certain period of time to pressurize, and vulcanize once, the temperature is about 120 ℃, and the vulcanization time is half an hour; 步骤六:开模:首先弧形板向外多方位拉开,顶杆机构向下顶推轮胎主体,同时液压合模盘连同下模向下移动,轮胎主体与上模脱离,取下轮胎主体;Step 6: Open the mold: First, the arc plate is pulled outward in multiple directions, the ejector mechanism pushes the tire body downward, and the hydraulic clamping plate moves down together with the lower mold, the tire body is separated from the upper mold, and the tire body is removed. ; 步骤七:进行二次硫化,保温温度90℃,保温时间10小时;得到轮胎主体成品;Step 7: carry out secondary vulcanization, keep the temperature at 90°C, and keep the temperature at 10 hours; obtain the finished product of the tire body; 轮胎主体与轮毂的装配工艺为:利用压力机将轮胎主体套装在轮毂上,轮胎主体和轮毂周向装配结合面上通过凹凸结构进行周向方向的定位,然后将挡圈通过螺栓和轮毂紧固在一起,对轮胎主体进行轴向定位,从而将轮胎主体紧固在轮毂上,完成装配。The assembly process of the tire body and the hub is as follows: use a press to fit the tire body on the hub, position the tire body and the hub in the circumferential direction through the concave-convex structure on the circumferential assembly joint surface, and then fasten the retaining ring through bolts and the hub. Together, the tire body is axially positioned to secure the tire body to the hub, completing the assembly.
CN202010068993.1A 2020-01-21 2020-01-21 A closed inner support airless tire and its production process Pending CN111114203A (en)

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