WO2016049831A1 - 用于重型工程机械车辆的轮辋及重型工程机械车辆 - Google Patents

用于重型工程机械车辆的轮辋及重型工程机械车辆 Download PDF

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Publication number
WO2016049831A1
WO2016049831A1 PCT/CN2014/087854 CN2014087854W WO2016049831A1 WO 2016049831 A1 WO2016049831 A1 WO 2016049831A1 CN 2014087854 W CN2014087854 W CN 2014087854W WO 2016049831 A1 WO2016049831 A1 WO 2016049831A1
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Prior art keywords
rim
inner body
outer body
heavy construction
aluminum alloy
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PCT/CN2014/087854
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English (en)
French (fr)
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单增海
丁宏刚
李丽
马飞
马云旺
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徐州重型机械有限公司
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Priority to PCT/CN2014/087854 priority Critical patent/WO2016049831A1/zh
Publication of WO2016049831A1 publication Critical patent/WO2016049831A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B25/00—Rims built-up of several main parts ; Locking means for the rim parts
    • B60B25/02—Segmented rims, e.g. with segments arranged in sections; Connecting equipment, e.g. hinges; Insertable flange rings therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C29/00—Arrangements of tyre-inflating valves to tyres or rims; Accessories for tyre-inflating valves, not otherwise provided for
    • B60C29/02—Connection to rims

Definitions

  • the invention relates to the field of engineering machinery, in particular to a rim and a heavy construction engineering vehicle for a heavy construction machinery vehicle.
  • the chassis running mechanism of heavy construction vehicles such as all-terrain cranes at home and abroad adopts steel rims.
  • the rim structure is usually three-piece, including the retaining ring a2, the lock ring a1 and the rim body a3.
  • the ring a2 and the rim body a3 cooperate with the tire to support the tire;
  • the lock ring a1 locks the retaining ring a3 to ensure that the tire under high pressure causes the retaining ring a2, the rim body a3, and the tire to be formed as a whole.
  • the rim body a3 and the retaining ring a2 are stamped and rolled, and then welded seamlessly, and the rim web is connected to the rim body a3 by welding.
  • the rim structure also includes a valve a4.
  • valve a4 When performing tire assembly, the valve a4 is assembled on the rim body a3 and fastened; the rim body a3 is placed horizontally, the tire is placed on the rim body a3, and the center hole of the tire is centered with the center hole of the rim body; The ring a2 is inserted into the other section of the tire; the lock ring a2 is tightened. After the assembly is completed, the last tire is inflated.
  • the steel rim used in the all-terrain crane has a simple structure, is easy to implement, and has low cost, but has the following disadvantages:
  • the weight of the rim is about 120kg, the mass is large, the structure is cumbersome, and the heat dissipation is poor, which is not conducive to the heat dissipation of the tire and the brake pad; after assembling the whole machine, the unsprung mass and the moment of inertia are large, when braking or starting It takes more energy.
  • the rim is a three-piece structure, the retaining ring a2, the rim body a3 is equipped with a tire, and the lock ring a1 locks the retaining ring a2 to ensure that the three-piece structure and the tire are one under the high pressure of the tire.
  • the lock ring a1 is ejected; and there is no seal between the retaining ring a2 and the rim body a3, and the airtightness is poor.
  • the rim body a3 is rolled and formed by welding, and the web is connected with the rim body a3 by welding.
  • the whole structure is mostly formed by tailor welding.
  • the welding process is affected by the environment and personnel operation level, and the welding quality defect occurs. The chance is increased.
  • the surface of the rim is gray and rough, with many processing defects and poor roundness.
  • the installation space of the rim valve a4 has a large occupying space, which causes the design space between the brake caliper disc and the valve a4 to be reduced, which brings difficulties to the design.
  • the valve a4 and the valve are prone to occur.
  • the axle brake caliper disc a5 interferes.
  • the object of the present invention is to propose a rim and heavy construction machinery vehicle for a heavy construction machinery vehicle, which can meet the load bearing requirements of heavy construction machinery vehicles, and is lighter than the conventional steel rim, and improve the heavy construction machinery vehicle. Sports performance.
  • the present invention provides a rim for a heavy construction machine vehicle, comprising a split type aluminum alloy rim structure connected by a bolt and a nut, the aluminum alloy rim structure being divided into a rim inner body (4) and The rim outer body (1), the outer contour of the rim inner body (4) cooperates with the inner contour portion of the rim outer body (1) to form an axially and radially positioned position.
  • an outer end surface of the rim inner body (4) is engaged with an inner end surface of the rim outer body (1) for axial positioning, and an outer circumferential surface of the rim inner body (4) The inner circumferential surface of the rim outer body (1) is fitted to perform positioning in the radial direction.
  • the joint position of the rim inner body (4) and the rim outer body (1) is provided with a circular arc transition structure.
  • At least one sealing groove is provided on the outer body wall of the rim inner body (4) corresponding to the mating area of the rim outer body (1), and the rim is at the rim In the assembled state, an O-ring (2) is provided in the sealing groove.
  • a plurality of interference fit knurled bolts (6) are fixed on the rim inner body (4), and the knurled bolts (6) pass through the rim outer body (1) corresponding to Bolt holes and fixed by means of locknuts (7).
  • the rim inner body (4) is provided with a built-in inflation passage (8), one end of the built-in inflation passage (8) is connected to a position at which the tire is mounted on the rim inner body (4), and Connect the valve (3) at one end.
  • the curved shape of the longitudinal section formed by the rim outer body (1) and the rim inner body (4) is a full slant bottom type.
  • the rim outer body (1) and the rim inner body (4) are both forged and formed, and the surface of the rim outer body (1) and the rim inner body (4) are finished. Processing technology.
  • the present invention provides a heavy construction machine vehicle including a chassis running mechanism, wherein the chassis running mechanism employs the aforementioned rim.
  • the heavy construction machinery vehicle is an all terrain crane.
  • the present invention adopts a split type aluminum alloy rim structure installed by bolts and nuts, and the rim inner body and the rim outer body are assembled with reliable axial and radial positioning, so compared with the existing
  • the three-piece steel rim is safer and more reliable, and it is simpler and more convenient to assemble tires. It not only satisfies the load-bearing requirements of heavy construction machinery vehicles, but also avoids the danger of the existing three-piece steel rims.
  • the aluminum alloy rim structure is lighter than the steel rim, which can effectively reduce the unsprung mass of heavy construction machinery vehicles, reduce the wheel assembly inertia, and save the start and brake process.
  • the aluminum alloy material has stronger heat dissipation performance for the heat dissipation of tires and brake pads. , extend the service life and reduce maintenance costs.
  • FIG. 1 is a structural schematic view of a conventional three-piece steel rim structure along an axial direction.
  • Figure 2 is a schematic cross-sectional view of the A-A section of Figure 1.
  • FIG 3 is a structural schematic view of an embodiment of a rim for a heavy construction machine of the present invention taken along an axial direction.
  • Figure 4 is a cross-sectional view taken along line B-B of Figure 3.
  • the existing steel rim has certain problems in terms of quality, structure and thermal conductivity of the material. For details, refer to the previous description, and details are not described herein.
  • the aluminum alloy material has the advantages of light weight, good thermal conductivity and beautiful appearance, and has been widely used in many motor vehicles. However, for heavy construction machinery vehicles, because of the high requirements on the bearing capacity of the rim structure, it is not easy to simply replace the three-piece steel rim structure used in the existing heavy construction machinery vehicles. Made of aluminum alloy rims.
  • the inventors have provided a new split type aluminum alloy rim structure, and the split type aluminum alloy rim structure passes Bolt and nut connections can meet the load bearing requirements of heavy construction machinery vehicles. Moreover, the weight of the aluminum alloy material is lighter, which can effectively reduce the unsprung mass of heavy construction machinery vehicles, reduce the steering inertia of the wheel assembly, save the energy consumption of the starting and braking process, improve the vehicle handling performance, and save fuel and fuel during driving. emission reduction.
  • the thermal conductivity of the aluminum alloy rim material is three times that of the steel rim, and the heat dissipation capability is stronger, which helps the heat dissipation of the tire and the brake pad, prolongs the service life and reduces the maintenance cost.
  • the rim includes a split type aluminum alloy rim structure connected by bolts and nuts, and the aluminum alloy
  • the rim structure is divided into a rim inner body 4 and a rim outer body 1, and the outer contour of the rim inner body 4 cooperates with the inner contour portion of the rim outer body 1 to form an axially and radially positioned position.
  • the axial and radial positioning and matching structure not only can achieve a more stable supporting effect between the inner and outer bodies, but also facilitate the connection and fixing by the high-strength bolt and nut.
  • the rim inner body 4 after assembly of the rim outer body 1 and the rim inner body 4 is fitted between the inner end surface of the rim outer body 1 (i.e., the end surface corresponding to the inner rim of the rim) and the inner circumferential surface. space. Therefore, in particular, the axial positioning may be coordinated by the outer end surface of the rim inner body 4 with the inner end surface of the rim outer body 1, and the radial positioning may be by the outer circumferential surface of the rim inner body 4 and the rim outer body. The inner circumferential surface of 1 is fitted. In order to avoid mutual scratching of the inner and outer bodies during assembly, a circular arc transition structure may be provided at a joint position of the rim inner body 4 and the rim outer body 1.
  • a plurality of knurled bolts 6 with interference fits may be fixed on the rim inner body 4, and the knurled bolts 6 pass through the rim outer body 1.
  • Corresponding bolt holes are connected and fixed by the locknut 7.
  • the knurled bolt 6 can be first fixed to the rim inner body 4 at the time of shipment, and the connection of the lock nut 7 to the knurled bolt 6 can ensure the connection strength between the rim outer body 1 and the rim inner body 4.
  • a plurality of through holes 10 may be provided in the circumferential direction of the web of the rim inner body 4 for mounting the rim bolts on the axle 9 for connecting the rim and the axle 9, and the left side is projected to the left side of the web. It is a wheel speed reduction mechanism.
  • At least one sealing groove may be provided on the outer body wall of the rim inner body 4 corresponding to the mating area of the rim outer body 1, and the O-ring 2 is disposed in the sealing groove when the rim is in the assembled state. , the airtightness of the rim can be guaranteed.
  • a built-in inflation passage 8 may be provided, and one end of the built-in inflation passage 8 communicates with a position at which the tire is mounted on the rim inner body 4, and the other end is connected to the valve 3.
  • the curved shape of the longitudinal section formed by the rim outer body 1 and the rim inner body 4 is preferably a full slant bottom type, conforms to the European tire rim yearbook, and can be equipped with various engineering tires.
  • the rim outer body 1 and the rim inner body 4 can be forged and formed, and the surface of the rim outer body 1 and the rim inner body 4 is processed by a finishing process. .
  • the forged and formed rim outer body 1 and the rim inner body 4 have relatively uniform density and less processing defects, so that the split aluminum alloy rim structure of the present invention is stronger than the existing steel rim, and the bearing is higher. More capable.
  • the finishing process can obtain higher roundness, improve the running stability of the vehicle, and the surface of the finished car is shiny, which can enhance the appearance of the whole machine, and form an oxide film on the surface, without surface anti-rust treatment, so Existing steel rims are more resistant to corrosion.
  • the rim embodiment of the above invention can be used for chassis running mechanisms of various heavy construction machinery vehicles, such as all terrain cranes and the like.
  • the inner body of the rim can be laid flat on the ground, then the tire is placed on the inner body, and finally the outer body is placed over the tire, and the inner and outer bodies are fastened by the knurled bolt and the lock nut. Together, clamp the tires. After the assembly is completed, the tire is inflated through the valve.

Abstract

用于重型工程机械车辆的轮辋及重型工程机械车辆，轮辋包括通过螺栓螺母连接的对开式的铝合金轮辋结构，所述铝合金轮辋结构分为轮辋内体（4）和轮辋外体（1），所述轮辋内体（4）的外侧轮廓与所述轮辋外体（1）的内侧轮廓部分配合，形成在轴向上和径向上的定位。该轮辋结构在轮胎装配上更加简单方便，满足重型工程机械车辆的承载要求，避免了现有的三件式钢制轮辋锁圈弹出危险。

Description

用于重型工程机械车辆的轮辋及重型工程机械车辆 技术领域
本发明涉及工程机械领域，尤其涉及一种用于重型工程机械车辆的轮辋及重型工程机械车辆。
背景技术
目前，国内外的全地面起重机等重型工程车辆的底盘行走机构均采用钢制轮辋。以目前在全地面起重机普遍使用的9.5-25/1.7钢制轮辋为例，如图1、2所示，轮辋结构通常为三件式，包括挡圈a2、锁圈a1和轮辋体a3，挡圈a2、轮辋体a3与轮胎配合，起到支撑轮胎的作用；锁圈a1锁住挡圈a3，以保证轮胎在高压下，使挡圈a2、轮辋体a3、轮胎形成为一整体。轮辋体a3、挡圈a2冲压后滚卷成型，然后焊接无缝连接，而轮辋辐板通过焊接与轮辋体a3连接。除此之外，轮辋结构上还包括气门嘴a4。
当进行轮胎装配时，将气门嘴a4装配在轮辋体a3上，并紧固；将轮辋体a3水平放置，将轮胎放置在轮辋体a3上，轮胎中心孔与轮辋体中心孔对中；将挡圈a2装入轮胎另一断面孔；紧固锁圈a2。装配完成后，最后轮胎充气。
目前全地面起重机使用的钢制轮辋的结构简单，加工容易实现，成本较低，但具有以下缺点：
(1)这种轮辋重量约为120kg，质量大，结构笨重，且散热性较差，不利于轮胎、刹车片散热；装配整机后，簧下质量、转动惯量较大，制动或起步时耗费更大能量。
(2)该轮辋为三件式结构，挡圈a2、轮辋体a3装配轮胎，锁圈a1锁住挡圈a2，以保证在轮胎高压下三件结构与轮胎为一 整体，但由于装配较为复杂，存在操作不当而导致锁圈a1弹出的风险；且挡圈a2、轮辋体a3之间并无密封，气密性较差。
(3)轮辋体a3滚卷成型，通过焊接无缝连接，辐板通过焊接与轮辋体a3连接，整个结构多以拼焊成型，焊接工艺多受环境、人员操作水平影响，出现焊接质量缺陷的几率增大。
(4)轮辋表面灰暗粗糙，加工缺陷较多，真圆度差。
(5)该轮辋气门嘴a4安装形式占位空间较大，导致制动钳盘与气门嘴a4之间的设计空间减小，给设计带来困难，轮胎滚动时，极易出现气门嘴a4与车轴制动钳盘a5干涉。
发明内容
本发明的目的是提出一种用于重型工程机械车辆的轮辋及重型工程机械车辆，能够满足重型工程机械车辆的承载要求，且相比于传统的钢制轮辋更轻，提高重型工程机械车辆的运动性能。
为实现上述目的，本发明提供了一种用于重型工程机械车辆的轮辋，包括通过螺栓螺母连接的对开式的铝合金轮辋结构，所述铝合金轮辋结构分为轮辋内体(4)和轮辋外体(1)，所述轮辋内体(4)的外侧轮廓与所述轮辋外体(1)的内侧轮廓部分配合，形成在轴向上和径向上的定位。
进一步的，所述轮辋内体(4)的外侧端面与所述轮辋外体(1)的内侧端面配合，以进行轴向上的定位，所述轮辋内体(4)的外侧圆周面与所述轮辋外体(1)的内侧圆周面配合，以进行径向上的定位。
进一步的，所述轮辋内体(4)与所述轮辋外体(1)的结合位置设有圆弧过渡结构。
进一步的，在所述轮辋内体(4)的外侧体壁对应于所述轮辋外体(1)的配合区域上设有至少一个密封槽，在所述轮辋处于 装配状态下，在所述密封槽中设有O型密封圈(2)。
进一步的，在所述轮辋内体(4)上固定设有多个过盈配合的滚花螺栓(6)，所述滚花螺栓(6)穿过所述轮辋外体(1)上对应的螺栓孔，并通过防松螺母(7)进行连接固定。
进一步的，在所述轮辋内体(4)设有内置式充气通道(8)，所述内置式充气通道(8)的一端与所述轮辋内体(4)上安装轮胎的位置连通，另一端连接气门嘴(3)。
进一步的，所述轮辋外体(1)和所述轮辋内体(4)共同形成的纵截面的曲线形状为全斜底式。
进一步的，所述轮辋外体(1)和所述轮辋内体(4)均采用锻压成型方式，且对所述轮辋外体(1)和所述轮辋内体(4)的表面采用精车加工工艺。
为实现上述目的，本发明提供了一种重型工程机械车辆，包括底盘行走机构，其中，所述底盘行走机构采用前述的轮辋。
进一步的，所述重型工程机械车辆为全地面起重机。
基于上述技术方案，本发明采用了通过螺栓螺母安装的对开式的铝合金轮辋结构，并且轮辋内体和轮辋外体的装配上采用可靠的轴向和径向定位，因此相比于现有的三件式钢制轮辋更加安全、可靠，在轮胎装配上也更加简单方便，不仅满足了重型工程机械车辆的承载要求，还避免了现有的三件式钢制轮辋存在的锁圈弹出危险；另一方面，铝合金材质的轮辋结构相比于钢制轮辋的重量更轻，可以有效地降低重型工程机械车辆的簧下质量，减少车轮总成转动惯量，节省起步和制动过程的能耗，提高车辆的操控性能，有利于行驶中节省燃油和减少排放，进而全面的提高重型工程机械车辆的运动性能；而铝合金材质所具有的更强的散热性能有利于轮胎和刹车片的散热，延长使用寿命，降低维护费用。
附图说明
图1为现有的三件式钢制轮辋结构沿轴向视角的结构示意图。
图2为图1中A-A截面的剖面示意图。
图3为本发明用于重型工程机械车辆的轮辋的一实施例沿轴向视角的结构示意图。
图4为图3中B-B截面的剖面示意图。
具体实施方式
下面通过附图和实施例，对本发明的技术方案做进一步的详细描述。
现有钢制轮辋在质量上、结构上以及材料的导热性能上均存在一定的问题，具体可参考前面的说明，这里不再赘述。而铝合金材质其具有质量轻、导热性能好、外形美观等优点已在很多的机动车辆上被广泛应用。但对于重型工程机械车辆来说，由于其对轮辋结构的承载能力有很高的要求，因此并不能简单的将现有的重型工程机械车辆中所应用的三件式钢制轮辋结构简单的替换成铝合金轮辋。
为了能将铝合金材质的优秀特点充分应用到重型工程机械车辆所使用的轮辋中，发明人提供了一种新的对开式的铝合金轮辋结构，这种对开式的铝合金轮辋结构通过螺栓螺母连接，可以满足重型工程机械车辆的承载要求。而且铝合金材质的重量更轻，可以有效降低重型工程机械车辆的簧下质量，减少车轮总成转向惯量，节省起步和制动过程的能耗，提高车辆操控性能，有利于行驶中节省燃油和减少排放。另外，铝合金轮辋材质的导热系数是钢制轮辋的3倍，散热能力更强，有助于轮胎、刹车片的散热，延长其使用寿命，降低维护费用。
图3、4示出的是本发明用于重型工程机械车辆的轮辋的一个示意性实施例，在本实施例中，轮辋包括通过螺栓螺母连接的对开式的铝合金轮辋结构，而铝合金轮辋结构分为轮辋内体4和轮辋外体1，而轮辋内体4的外侧轮廓与轮辋外体1的内侧轮廓部分配合，形成在轴向上和径向上的定位。这种轴向和径向上的定位配合结构，除了可以实现内外体之间更加稳固的支撑作用之外，也便于通过高强度的螺栓螺母进行连接固定。
从图4可以看到，轮辋外体1和轮辋内体4装配后的轮辋内体4嵌入到轮辋外体1的内侧端面(即轮辋内体辐板对应的端面)和内侧圆周面之间的空间。因此具体来说，轴向上的定位可以由轮辋内体4的外侧端面与轮辋外体1的内侧端面配合，而径向上的定位可以由轮辋内体4的外侧圆周面与所述轮辋外体1的内侧圆周面配合。而为了避免装配时内外体相互刮伤，可以在轮辋内体4与轮辋外体1的结合位置设有圆弧过渡结构。
在轮辋内体4和轮辋外体1的螺栓螺母连接结构中，具体可以在轮辋内体4上固定设有多个过盈配合的滚花螺栓6，滚花螺栓6穿过轮辋外体1上对应的螺栓孔，并通过防松螺母7进行连接固定。在出厂时可以将滚花螺栓6先固连在轮辋内体4上，而采用防松螺母7与滚花螺栓6连接可以保证轮辋外体1和轮辋内体4之间的连接强度。在轮辋内体4的幅板上还可以沿周向设置多个通孔10，用来安装车轴9上自带的轮辋螺栓，以便连接轮辋和车轴9，而左边凸出到幅板左侧部分为轮边减速机构。
在图4中，在轮辋内体4的外侧体壁对应于轮辋外体1的配合区域上还可以设有至少一个密封槽，在轮辋处于装配状态下，在密封槽中设置O型密封圈2，则可以保证轮辋的气密性。而在轮辋内体4可以设置内置式充气通道8，内置式充气通道8的一端与轮辋内体4上安装轮胎的位置连通，另一端连接气门嘴3。 从该结构可以看到，由于内置式充气通道8在轮辋内体4内，而气门嘴3安装在轮辋内体4的幅板外侧，未占用车轴制动钳盘所在的空间，因此在轮胎滚动时不会出现气门嘴与车轴制动钳盘的干涉。而O型密封圈2与内置式充气通道8配合，可以确保轮胎充气过程的气密性要求。
轮辋外体1和轮辋内体4共同形成的纵截面的曲线形状优选为全斜底式，符合欧洲轮胎轮辋年鉴，可配装多种工程轮胎。而在轮辋内体和轮辋外体的加工制造商，轮辋外体1和所述轮辋内体4均可采用锻压成型方式，且对轮辋外体1和轮辋内体4的表面采用精车加工工艺。其中锻压成型的轮辋外体1和轮辋内体4的密度比较均匀，加工缺陷更少，因此配合本发明的对开式铝合金轮辋结构，则比现有的钢制轮辋的强度更高，承载能力更强。而精车加工可以获得较高的真圆度，提高车辆行驶平稳性，而且精车加工的表面闪亮，可以提升整机外观形象，且表面形成氧化膜，无需表面进行防锈处理，因此比现有的钢制轮辋的抗腐蚀性更强。
上述发明的轮辋实施例可用于各种重型工程机械车辆的底盘行走机构，例如全地面起重机等。当需要进行轮胎装配时，可以先将轮辋内体平放在地面，然后将轮胎套在内体上，最后将外体盖于轮胎上方，通过滚花螺栓、防松螺母将内外体紧固连接在一起，夹紧轮胎。装配完成后，通过气门嘴给轮胎充气。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (10)

  1. 一种用于重型工程机械车辆的轮辋，其特征在于，包括通过螺栓螺母连接的对开式的铝合金轮辋结构，所述铝合金轮辋结构分为轮辋内体(4)和轮辋外体(1)，所述轮辋内体(4)的外侧轮廓与所述轮辋外体(1)的内侧轮廓部分配合，形成在轴向上和径向上的定位。
  2. 根据权利要求1所述的轮辋，其特征在于，所述轮辋内体(4)的外侧端面与所述轮辋外体(1)的内侧端面配合，以进行轴向上的定位，所述轮辋内体(4)的外侧圆周面与所述轮辋外体(1)的内侧圆周面配合，以进行径向上的定位。
  3. 根据权利要求2所述的轮辋，其特征在于，所述轮辋内体(4)与所述轮辋外体(1)的结合位置设有圆弧过渡结构。
  4. 根据权利要求1所述的轮辋，其特征在于，在所述轮辋内体(4)的外侧体壁对应于所述轮辋外体(1)的配合区域上设有至少一个密封槽，在所述轮辋处于装配状态下，在所述密封槽中设有O型密封圈(2)。
  5. 根据权利要求1所述的轮辋，其特征在于，在所述轮辋内体(4)上固定设有多个过盈配合的滚花螺栓(6)，所述滚花螺栓(6)穿过所述轮辋外体(1)上对应的螺栓孔，并通过防松螺母(7)进行连接固定。
  6. 根据权利要求1所述的轮辋，其特征在于，在所述轮辋内体(4)设有内置式充气通道(8)，所述内置式充气通道(8)的一端与所述轮辋内体(4)上安装轮胎的位置连通，另一端连接气门嘴(3)。
  7. 根据权利要求1所述的轮辋，其特征在于，所述轮辋外体(1)和所述轮辋内体(4)共同形成的纵截面的曲线形状为全 斜底式。
  8. 根据权利要求1所述的轮辋，其特征在于，所述轮辋外体(1)和所述轮辋内体(4)均采用锻压成型方式，且对所述轮辋外体(1)和所述轮辋内体(4)的表面采用精车加工工艺。
  9. 一种重型工程机械车辆，包括底盘行走机构，其特征在于，所述底盘行走机构采用权利要求1～8任一所述的轮辋。
  10. 根据权利要求9所述的重型工程机械车辆，其特征在于，所述重型工程机械车辆为全地面起重机。
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