Traveling wheel of integrated sports car and integrated sports car

Abstract

The utility model discloses an integrated sports car walking wheel which comprises an aluminum alloy hub body, a main through hole arranged on a transmission shaft in a sleeved mode is formed in the middle of the aluminum alloy hub body, and the aluminum alloy hub body is concaved towards the middle around most of the middle area of the main through hole to form a main body cavity. A plurality of fasteners used for fastening connection are arranged on the periphery of the main through hole, and the periphery of the aluminum alloy hub body is coated with a rubber layer. The utility model discloses an integrated sports car which comprises a car body and a bogie arranged below the car body, and integrated sports car walking wheels are arranged on the bogie. The aluminum alloy hub structure is high in bearing capacity, good in heat dissipation performance, high in rubber bonding strength, resistant to abrasion, capable of absorbing shock, good in rigidity and excellent in stability performance in the using process.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rail transit transportation equipment field, especially relates to a kind of running wheel and set motion car for air track. BACKGROUND

[0002] The container terminal air track collection and distribution system is an innovative three-dimensional transportation mode, aiming to realize efficient, green and intelligent transportation of containers through the air track system.The container terminal air track collection and distribution system is a new traffic concept, which constructs the collection and distribution network of future port logistics with three-dimensional thinking.The system connects the logistics system of port, railway and highway organically through the air track, and realizes efficient transfer of containers between different transportation nodes.

[0003] Currently, the system mainly consists of six systems: track, container vehicle, operation control, power supply communication, switching and information scheduling.By using intelligent and unmanned technologies, the system realizes green, efficient and integrated features.The container vehicle in the system is an intelligent driving container vehicle integrating port loading and unloading and horizontal transportation, which realizes intelligent, efficient and seamless connection of port by integrating air track technology with container business in the terminal, and realizes "zero transfer" of port, land and railway transportation by connecting the "one kilometer" between railway terminal and container yard.

[0004] The running wheel of the container vehicle is mainly used for bearing, damping and traction functions, and generally uses high-molecular rubber wheels to replace traditional running wheels and guide wheels made of steel, to reduce noise and turning radius and reduce land occupation of on-site transportation channels.However, the existing structure of the running wheel of the container vehicle does not have enough adaptability to different rail surfaces in complex port environments, and the wear resistance and rigidity of the rubber wheels also need to be improved, which not only affects the service life of the running wheel, but also may endanger the driving safety of the container vehicle.In addition, since the running wheel is used in the air track, it is required to meet the conditions of bearing, damping and traction functions, and the whole vehicle needs to meet the requirements of lightweight and adapt to a certain climbing ability and speed index.These all put forward higher requirements for the comprehensive performance improvement of the running wheel. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problems of overcoming the deficiencies and defects mentioned in the above background technology, and provides a container vehicle running wheel with strong adaptability, good wear resistance, good rigidity and light weight, and a container vehicle.

[0006] To solve the above technical problems, the technical solution provided by the utility model is:

[0007] The application discloses a running wheel of a sports car, which comprises an aluminum alloy hub body, a main through hole provided on a transmission shaft is arranged in the middle of the aluminum alloy hub body, a main cavity is formed by recessing the middle part of the main through hole, a plurality of fasteners for fastening connection are arranged around the main through hole, and a rubber layer is arranged on the outer periphery of the aluminum alloy hub body. By adopting the aluminum alloy hub body, the overall weight is effectively reduced, the operation efficiency is improved, the weight is further reduced by the main cavity, a large installation space is provided for the running wheel, the flexibility and functionality of the overall structure are enhanced, the wear resistance and damping performance of the running wheel are improved by the rubber layer, and the running wheel is more stable and reliable in the air track operation.

[0008] In the running wheel of the sports car, preferably, the main cavity comprises a first cavity formed by recessing the outer side of the aluminum alloy hub body and a second cavity formed by recessing the inner side of the aluminum alloy hub body, and the first cavity and the second cavity make the aluminum alloy hub body present a kind of "H" type structure in the longitudinal section along the central axis. The first cavity not only can reduce the weight, but also can be used as an external avoidance area to avoid interference between the running wheel and the track or other components during operation, reduce the risk of collision between external objects and the running wheel, and improve the safety and stability of operation. The second cavity is arranged to be installed with the transmission shaft, and the installation space is optimized.

[0009] In the running wheel of the sports car, preferably, the first cavity is significantly smaller than the second cavity. The optimized arrangement makes the running wheel form a larger installation space under the premise of maximum weight reduction, facilitates installation, and makes the running wheel better disperse stress and reduce wear between the wheel and the track when passing through a curve or a complex terrain.

[0010] In the running wheel of the sports car, preferably, the aluminum alloy hub body with the kind of "H" type structure comprises a wing part and a support part, the average thickness of the rubber layer is controlled to be 21mm-23mm, the average thickness of the wing part is controlled to be 60mm-65mm, and the average width of the support part is controlled to be 58mm-62mm. Through the preferred arrangement, the rubber layer can provide good buffering and damping effect, effectively absorb the vibration and impact of the road surface, and the size of the wing part and the support part can further optimize the weight distribution and mechanical properties of the hub while ensuring the structural strength.

[0011] In the running wheel of the sports car, preferably, a plurality of weight reduction holes are uniformly arranged around the main through hole in a central symmetry mode. Through the arrangement, the material consumption of the aluminum alloy hub can be effectively reduced, the weight of the hub is significantly reduced, the weight reduction holes increase the heat dissipation area of the hub, and the temperature of the hub during operation is reduced.

[0012] Preferably, a plurality of hoisting holes are evenly arranged around the main through hole in a symmetrical manner along the center of the main through hole, and the hoisting holes are smaller than the weight-reducing holes.

[0013] Preferably, the two end surfaces of the rubber layer are recessed inwardly relative to the two end surfaces of the aluminum alloy hub body. By this arrangement, the internal stress distribution of the rubber layer under extrusion pressure can be improved.

[0014] Preferably, the bonding surface between the rubber layer and the aluminum alloy hub body is a linear curved surface with an equal diameter in the axial direction. This arrangement can make the aluminum alloy hub and the rubber ring uniformly fit on a larger area, reduce the gap and unevenness, thereby improving the tightness of the connection and making the stress more uniform to avoid stress concentration.

[0015] As a general technical concept, the utility model also provides a sports car, including car body and the bogie arranged below the car body, the bogie is provided with the above-mentioned sports car running wheel.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] This project first combines the air rail technology with the port container business on a global scale, realizes the intelligent, efficient and seamless connection of the port, and will certainly make new contributions to building a new development pattern of domestic circulation as the main body and mutual promotion of domestic and international double circulation. After the completion of the project, the port container collection and distribution will realize the qualitative upgrading from plane traffic to three-dimensional traffic, completely solve the traffic safety bottlenecks such as intersection and congestion of plane transportation, and at the same time, it will open up the "one kilometer in the middle" from the railway port station to the container yard, realize the "zero transfer" of port, land and railway combined transportation, further improve the port container collection and distribution capacity and efficiency, expand the development space of the port area, and play a demonstration and leading role in urban three-dimensional rail transit.

[0018] The use of aluminum alloy hubs not only meets the actual use technical requirements but also reduces the weight of the whole vehicle, and has great market development prospects.

[0019] (1) The running wheel adopts an aluminum alloy hub, low heat generation and wear-resistant solid rubber wheel.

[0020] (2) It can meet the working environment of various ports.

[0021] (3) Quick and convenient installation and disassembly.

[0022] The aluminum alloy hub structure has high bearing capacity, good heat dissipation performance, high rubber bonding strength, good wear resistance, damping and rigidity, and excellent stability during use. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0024] Figure 1 It is the overall structure front view of the embodiment of the present application.

[0025] Figure 2 It is the A section view of the embodiment of the present application. Figure 1

[0026] Figure 3 It is the B enlarged view of the embodiment of the present application. Figure 2

[0027] Figure 4 It is the product performance simulation analysis structure diagram in the embodiment of the present application.

[0028] Figure 5 It is the rigidity curve diagram after product performance test in the embodiment of the present application.

[0029] Figure 6 It is the rubber stress distribution nephogram (100kN) after product performance test in the embodiment of the present application.

[0030] Figure 7 It is the rubber strain distribution nephogram (100kN) after product performance test in the embodiment of the present application.

[0031] Figure 8 It is the hub stress distribution nephogram (100kN) after product performance test in the embodiment of the present application.

[0032] Figure 9 It is the hub stress distribution nephogram (200kN) after product performance test in the embodiment of the present application.

[0033] Figure 10 It is the rubber stress distribution nephogram (with slope) after product performance test in the embodiment of the present application.

[0034] Figure 11 It is the rubber strain distribution nephogram (with slope) after product performance test in the embodiment of the present application.

[0035] Figure 12 ​​This is a cross-sectional view of the present invention.

[0036] Legend

[0037] 1. Aluminum alloy wheel hub body; 2. Main through hole; 3. Main body cavity; 4. Fastener; 5. Rubber layer; 6. Weight reduction hole; 7. Lifting hole; 11. Wing; 12. Support part; 31. First cavity; 32. Second cavity. Detailed Implementation

[0038] To facilitate understanding of this utility model, it will be described more comprehensively and in detail below with reference to the accompanying drawings and preferred embodiments. However, the scope of protection of this utility model is not limited to the following specific embodiments.

[0039] It should be noted that when a component is described as being "fixed to, attached to, connected to or connected to" another component, it can be directly fixed to, attached to, connected to or connected to the other component, or it can be indirectly fixed to, attached to, connected to or connected to the other component through other intermediate connectors.

[0040] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of protection of this invention.

[0041] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this invention can be purchased from the market or prepared by existing methods.

[0042] Example:

[0043] like Figures 1 to 12 As shown, the vehicle running wheel of this embodiment includes an aluminum alloy wheel hub body 1. The aluminum alloy wheel hub body 1 has a main through hole 2 set on the drive shaft in the middle. The aluminum alloy wheel hub body 1 is recessed in the middle of most of the main through hole 2 to form a main cavity 3. Multiple fasteners 4 for fastening connection are provided around the main through hole 2. A rubber layer 5 is covered on the outer periphery of the aluminum alloy wheel hub body 1.

[0044] In this embodiment, as Figure 2 As shown, the main cavity 3 includes a first cavity 31 formed by the outer side of the aluminum alloy wheel hub body 1 recessed towards the middle and a second cavity 32 formed by the inner side of the aluminum alloy wheel hub body 1 recessed towards the middle. The first cavity 31 and the second cavity 32 make the longitudinal section of the aluminum alloy wheel hub body 1 along the central axis present an "I" shaped structure.

[0045] In this embodiment, the first cavity 31 is significantly smaller than the second cavity 32.

[0046] In this embodiment, the aluminum alloy wheel hub body 1 with an "I"-shaped structure includes a wing 11 and a support 12. The average thickness of the rubber layer 5 is 21mm, which can be controlled between 21mm and 23mm. The average thickness X of the wing 11 is 60mm, which can be controlled between 60mm and 65mm. The average width Y of the support 12 is 60mm, which can be controlled between 58mm and 62mm.

[0047] In this embodiment, the aluminum alloy wheel hub can be made of 6061-T6 aluminum alloy, and metal fiber material can be added to the rubber layer 5.

[0048] In this embodiment, multiple weight-reducing holes 6 (which can be 4) are uniformly opened around the main through hole 2 in a symmetrical manner along its center.

[0049] In this embodiment, multiple lifting holes 7 (which can be two) are uniformly provided around the main through hole 2 in a symmetrical manner along its center, and the lifting holes 7 are smaller than the weight reduction holes 6.

[0050] In this embodiment, as Figure 3 As shown, the two ends of the rubber layer 5 are recessed inward relative to the two ends of the aluminum alloy wheel hub body 1.

[0051] In this embodiment, the bonding surface between the rubber layer 5 and the aluminum alloy wheel hub body 1 is a straight curved surface with a constant diameter along the axial direction.

[0052] The tractor unit of this embodiment includes a vehicle body and a bogie disposed below the vehicle body, with tractor unit running wheels disposed on the bogie.

[0053] The machining process of the integrated moving car running wheels in this embodiment includes the following steps:

[0054] S1: The aluminum alloy wheel hub body 1 is machined using an aluminum alloy casting machine;

[0055] S2: Sandblast the outer periphery of the aluminum alloy wheel hub body 1;

[0056] S3: Apply adhesive to the outer periphery of the sandblasted aluminum alloy wheel hub body 1;

[0057] S4: Rubber raw material is wrapped around the outer periphery of the aluminum alloy wheel hub body 1 after the adhesive is applied, and rubber layer 5 is prepared after plasticizing, mixing, molding, vulcanizing and finishing.

[0058] In this embodiment, the specific step 4 can be that the rubber raw material is wound around the outer periphery of the aluminum alloy hub body 1 after the adhesive is coated, then the raw rubber is plasticized, hot compressed air is introduced into the raw rubber, under the action of heat and oxygen, the long-chain molecules are degraded and shortened, so that plasticity is obtained. The plasticized raw rubber is mixed with the compounding agent and placed in a rubber mixer, and the compounding agent is completely and uniformly dispersed in the raw rubber through mechanical mixing, and then molded. A certain amount of vulcanizing agent (such as sulfur, vulcanizing accelerator, etc.) is added to the semi-finished product made of raw rubber (in a vulcanizing tank), heated and kept at a specified temperature, so that the linear molecules of the raw rubber are cross-linked to form a three-dimensional network structure through the formation of "sulfur bridges", so that the plastic rubber changes into vulcanized rubber with high elasticity. After vulcanization, the mold is taken out, the product edge burrs are trimmed after cooling, and the rubber layer 5 is prepared.

[0059] For the running wheel described above in this embodiment, we perform performance test analysis through computer simulation and combined with mechanical principles. The analysis is a stiffness characteristic analysis and strength check under pure static conditions. The rubber constitutive equation is based on the M-R strain energy density function, and the rubber and metal are bound together as a whole for analysis. The specific load bearing and analysis output requirements are shown in the following table.

[0060] Table 1: Calculation conditions and requirements

[0061]

[0062] According to the load condition of the running wheel, load according to the following requirements. According to this condition, the stress and strain distribution of the running wheel can be calculated.

[0063] (1) The lower rigid body plane is completely constrained, that is, (Ux, Uy, Uz = 0);

[0064] (2) Since the load model is completely symmetrical, this analysis uses a half model for analysis, and sets up mirror boundary conditions on the symmetry plane; according to the load requirements, a vertical load is applied on the hub center face coupling point

[0065] This finite element analysis is performed using ABAQUS software. The unit system used is SI (mm), that is, mm, N, and Mpa. The aluminum alloy part is simulated using C3D8R and a small amount of C3D4 units in ABAQUS, and the rubber part is simulated using C3D8H and C3D6H hybrid units. The aluminum alloy material uses the classical elastic mechanics simulator linear elasticity, and the rubber material uses the Mooney-Rivlin constitutive model to simulate its hyperelasticity. The grid model of the running wheel is as shown in Figure 4

[0066] 100kN (vertical load) stress and strain analysis results: ​

[0067] The stress-strain distribution cloud chart of the rubber of the running wheel under the 100kN (vertical loading) working condition is shown in Figures 5 to 7 , the maximum stress is 1.55MPa, the strain is 0.23, the deformation is 1.89, and the stiffness is: 100 / 1.89=52.9kN / mm. The stress distribution cloud chart of the wheel hub of the running wheel under the 100kN (vertical loading) working condition is shown in Figure 8 , the maximum stress is 15MPa, which is far lower than the yield strength of 240MPa.

[0068] The stress distribution cloud chart of the wheel hub of the running wheel under the 200kN (ultimate vertical loading) working condition is shown in Figure 9 , the maximum stress is 36MPa, which is far lower than the yield strength of 240MPa.

[0069] In addition, according to the system model conversion, the track angle is 0.42°, and the stress-strain distribution cloud chart of the rubber of the running wheel under the 100kN (vertical loading) working condition of the initial model is shown in Figure 10 and Figure 11 , the maximum stress is 2.14MPa, and the strain is 0.3.

[0070] A running wheel is selected as a comparative example for performance test and comparison, as shown in Figure 12 , the running wheel also includes an aluminum alloy wheel hub body, and the first cavity is equal to the second cavity, the average thickness of the rubber layer is 28mm-30mm, and the average thickness of the wing part is 80mm-85mm. When the structure running wheel is used in the monorail, the installation space near the axle side is small, the installation difficulty is increased, the monorail track surface deviates downward near the middle side due to the weight when the monorail vehicle runs, two planes form a V shape, in addition, the rubber stiffness of the structure is poor, so that the rubber layer near the vehicle side is stressed the most when the monorail vehicle runs, the wear speed is accelerated, and the service life cannot meet the technical requirements. The running wheel of the embodiment has a gravity deviated from the outside of the track surface, the rubber layer is stressed near the outside when the rubber layer is stressed, so that the stress of the rubber is more uniform.

[0071] Through mechanical analysis, the product can achieve full lightweighting (the weight reduction is about 40% compared with the existing steel wheel hub product), the stiffness is 52.9kN / mm, the stiffness of the product can meet the use requirements, the maximum stress reaches 36Mpa under the ultimate working condition, and the safety factor is 6.6 times. Under the 4mm slope, the stress and strain of the rubber are far less than the fatigue stress and strain, and the product can meet the use requirements. The running wheel structure of the embodiment can fully bear the 100KN radial working load, and does not deform under the ultimate load of 200KN, the stiffness of the rubber layer is also adjusted in a proper range, so that the compression amount under the load condition is ensured and the damping effect is achieved.

Claims

1. A running wheel for a motorized vehicle, characterized in that, The application relates to an aluminum alloy wheel body (1) which is provided with a main through hole (2) in the middle part of the aluminum alloy wheel body (1) and is arranged on a transmission shaft, the aluminum alloy wheel body (1) is recessed towards the middle part around the middle part of the main through hole (2) to form a main cavity (3), a plurality of fastening members (4) for fastening connection are arranged around the main through hole (2), and the aluminum alloy wheel body (1) is covered with a rubber layer (5) on the outer periphery. The main cavity (3) comprises a first cavity (31) which is recessed towards the middle part on the outer side of the aluminum alloy wheel body (1) and a second cavity (32) which is recessed towards the middle part on the inner side of the aluminum alloy wheel body (1), the first cavity (31) and the second cavity (32) make the aluminum alloy wheel body (1) present a kind of "H" type structure in the longitudinal section along the central axis. The first cavity (31) is significantly smaller than the second cavity (32).

2. The wheeled vehicle of claim 1, wherein: The aluminum alloy wheel body (1) with the kind of "H" type structure comprises a wing part (11) and a support part (12), the average thickness of the rubber layer (5) is controlled to be 21mm-23mm, the average thickness of the wing part (11) is controlled to be 60mm-65mm, and the average width of the support part (12) is controlled to be 58mm-62mm.

3. The wheeled vehicle of claim 1, wherein: A plurality of weight-reducing holes (6) are uniformly arranged around the main through hole (2) in a central symmetry mode.

4. The wheeled vehicle of claim 3, wherein: A plurality of hoisting holes (7) are uniformly arranged around the main through hole (2) in a central symmetry mode, and the hoisting holes (7) are smaller than the weight-reducing holes (6).

5. The wheeled vehicle of claim 1, wherein: The two end faces of the rubber layer (5) are recessed towards the inside relative to the two end faces of the aluminum alloy wheel body (1).

6. The wheeled vehicle of claim 1, wherein: The combined surface between the rubber layer (5) and the aluminum alloy wheel body (1) is a linear curved surface which changes in the axial direction.

7. A collection vehicle, characterized by The application further relates to a sports vehicle which comprises a vehicle body and a bogie arranged below the vehicle body, and the bogie is provided with the sports vehicle running wheel.

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