mwirth-epo/epo-nmt-datasets huggingface dataset:
根据该结构，在发生前碰撞时，动力系朝着车宽中央一边进行横摆运动一边后退。
In the above configuration, the power train retracts, while performing yaw motion toward the vehicle width center in the event of collision from the front side.
由此，动力系能够被诱导到驾驶席和助手席之间，因此能够保护就座于驾驶席或者助手席的乘员。
Since the above configuration enables to guide the power train to a position between the driver seat and the passenger seat, it is possible to protect a passenger seated on the driver seat or the passenger seat.
此外，由于后侧固定部被破坏，因此，能够能动地将动力系的至少后部诱导到下方，能够更有效地保护乘员。
Further, since the rear fixing portion is broken, it is possible to actively guide at least a rear portion of the power train downwardly.
在该结构中，“以所述连结构件的指定部位作为中心一边进行横摆运动一边后退”是指“以所述连结构件的指定部位作为正中心一边进行横摆运动一边后退”的情况之外，在动力系能够有效地被诱导到驾驶席和助手席之间，从而能够有效地保护就座于驾驶席或者助手席的乘员前提下，还包括“以所述连结构件的指定部位作为大致中心(也就是，以所述连结构件的指定部位附近作为中心)一边进行横摆运动一边后退”的情况。
This is more advantageous in protecting the passenger.
所述来自前方的碰撞负荷也可以是从左右两侧中的一侧的斜前方作用于所述动力系的碰撞负荷。
The collision load from the front side may be a collision load acting on the power train obliquely from a front side and one of left and right sides.
在碰撞负荷从左右两侧中的一侧的斜前方输入的情况下，亦即在发生车辆的斜向碰撞时，动力系承受该碰撞负荷而发生后退的可能性大。
When a collision load is input obliquely from the front side and one of left and right sides, in other words, in the event of oblique collision of the vehicle, it is highly likely that the power train may retract by receiving the collision load.
根据该结构，在发生这样的斜向碰撞时能够切实地保护乘员。
The above configuration enables to securely protect the passenger in the event of such oblique collision.
较为理想的是，所述车辆包括规定车室底面的底板、将所述收纳室和车室分隔的前围板、以及形成在所述底板上且向上方隆起的隧道部，所述隧道部的前端部上形成有向所述前围板的下端部中左右方向的中间部开口的开口部，所述装配支架还具有在所述前侧固定部的下侧被固定于所述动力系的下侧固定部，所述下侧固定部的强度被设定为基于来自所述斜前方的碰撞负荷而破坏该下侧固定部的强度，以便在来自所述斜前方的碰撞负荷作用于所述动力系时，使所述动力系朝向所述隧道部的所述开口部后退。
When the collision load obliquely from the front side acts on the power train, a strength of the lower fixing portion may be set to such a strength that the lower fixing portion is broken by the collision load in such a way that the power train retracts toward the opening portion of the tunnel portion.
根据该结构，在发生前碰撞时能够能动地将动力系诱导到下方，能够使动力系往位于驾驶席和助手席之间的隧道部内移动。
Further, it is possible to move the power train into the tunnel portion located between the driver seat and the passenger seat.
由此，能够更切实地保护乘员。
This enables to more securely protect the passenger.
所述动力系也可以具有马达和结合在该马达的上表面的变换器。
The power train may include a motor, and an inverter connected to an upper surface of the motor.
根据该结构，通过将处于相对较高位置的变换器诱导到驾驶席和助手席之间的隧道部内，能够保护乘员。
In the above configuration, it is possible to protect the passenger by guiding the inverter located at a relatively high position into the tunnel portion located between the driver seat and the passenger seat.
较为理想的是，所述装配支架以越接近所述动力系而高度越低地倾斜的姿势而被设置。
Preferably, the mounting bracket may be disposed to incline in such a way that a height of the mounting bracket decreases toward the power train.
根据该结构，在发生前碰撞时既能够减轻装配支架在左右方向上的对顶作用，又能够提高向下方诱导动力系的作用。
In the above configuration, it is possible to enhance an operation of guiding the power train downwardly, while suppressing an operation of the mounting bracket hindering a displacement in the left-right direction in the event of collision from the front side.
较为理想的是，所述装配支架具有以使所述前侧固定部的强度高于其它的固定部的强度的方式来进行加强的加强肋。
Preferably, the mounting bracket may include a reinforcement rib for reinforcing the front fixing portion in such a way that a strength of the front fixing portion increases, as compared with the other fixing portions.
根据该结构，通过在装配支架上形成加强肋这一简单的手法，能够将前侧固定部的强度设定为即使在前碰撞时也不会被破坏的强度。
In the above configuration, by a simplified method in which the reinforcement rib is formed on the mounting bracket, it is possible to set the strength of the front fixing portion to such a strength that the front fixing portion is not broken in the event of collision from the front side.
较为理想的是，所述动力系的前面部的左右两侧中的一侧的端部上形成有用于承受所述碰撞负荷的负荷承受部。
Preferably, a load receiving portion for receiving the collision load may be formed on one of left and right ends of a front surface of the power train.
在如此通过位于远离装配支架的位置的负荷承受部来承受来自前方的碰撞负荷的情况下，能够在发生前碰撞时以使动力系一边进行横摆运动一边后退的方式来控制动力系的动作。
In this way, in a configuration that a collision load from the front side is received by the load receiving portion located far from the mounting bracket, it is possible to control movement of the power train in such a way that the power train retracts, while performing yaw motion in the event of collision from the front side.
此外，基于负荷承受部的形成，在加强动力系的强度这一方面也较为理想。
Further, forming the load receiving portion is preferable also in terms of reinforcing the power train.
较为理想的是，所述负荷承受部以从所述动力系的前面部向前方突出的方式而被形成。
Preferably, the load receiving portion may be formed to project forwardly from the front surface of the power train.
根据该结构，基于向前方突出而成的负荷承受部，能够切实地承受来自前方的碰撞负荷。
In the above configuration, it is possible to securely receive a collision load from the front side by the forwardly projecting load receiving portion.
较为理想的是，所述负荷承受部具有多个在上下方向上隔开间隔地配置的凸起。
Preferably, the load receiving portion may include a plurality of projections disposed away from each other in an up-down direction.
发生前碰撞时，来自前方的碰撞负荷基于相对于动力系而位于前方的车身构件发生后退而碰撞到动力系从而被输入该动力系。
A collision load from the front side is input when a vehicle body member located on the front side with respect to the power train retracts, and collides with the power train.
此情况下，预想该车身构件碰撞动力系的位置会分散在上下方向上。
In this case, it is presumed that a position at which the vehicle body member collides with the power train varies in the up-down direction.
对此，在采用上述结构的情况下，由于设置有分开在上下方向上的作为负荷承受部的多个凸起，因此，即使碰撞位置分散在上下方向上也能够通过其中之一的凸起来承受碰撞负荷。
However, in the above configuration, since a plurality of projections away from each other in the up-down direction are formed as the load receiving portion, even if the collision position varies in the up-down direction, it is possible to receive the collision load by one of the projections.
较为理想的是，所述动力系的前面部上形成有与所述负荷承受部相连的加强肋。
Preferably, a reinforcement rib continuing to the load receiving portion may be formed on the front surface of the power train.
根据该结构，通过加强肋不仅能够加强动力系而且还能够加强负荷承受部。
In the above configuration, the reinforcement rib enables to reinforce not only the power train but also the load receiving portion.
因此，在发生前碰撞时，通过被加强了的负荷承受部，能够强固地承受来自前方的负荷，能够将输入到该负荷承受部的负荷作为使动力系进行横摆运动的力而有效地进行利用。
Therefore, in the event of collision from the front side, it is possible to securely receive the load from the front side by the reinforced load receiving portion.
较为理想的是，所述动力系在包含其的左右两侧中的一侧的端部的区域具有驱动车轮的马达，所述负荷承受部与构成所述马达的外廓的壳体一体地形成。
Preferably, the power train may include, in an area including one of left and right ends of the power train, a motor for driving a wheel, and the load receiving portion may be integrally formed with a casing constituting an outer shell of the motor.
根据该结构，能够将马达的壳体的局部作为负荷承受部而有效地进行利用。
In the above configuration, it is possible to effectively use a part of the casing of the motor, as the load receiving portion.
较为理想的是，所述壳体以所述负荷承受部的前端位于最前方的方式而被形成。
Preferably, the casing may be formed in such a way that a front end of the load receiving portion is located forwardmost.
根据该结构，能够使来自前方的碰撞负荷切实地先于马达的壳体的其它的部位地输入到负荷承受部。
In the above configuration, it is possible to securely input the collision load from the front side to the loading receiving portion before the collision load is input to the other portions of the casing of the motor.
较为理想的是，所述动力系以所述负荷承受部的前端位于最前方的方式而被形成。
Preferably, the power train may be formed in such a way that a front end of the load receiving portion is located forwardmost.
根据该结构，能够使来自前方的碰撞负荷切实地先于动力系的其它的部位地输入到负荷承受部。
In the above configuration, it is possible to securely input the collision load from the front side to the loading receiving portion before the collision load is input to the other portions of the power train.
本发明的动力系的支撑结构作为在动力系以偏置在左右两侧中的一侧的方式而被设置的情况下的碰撞安全对策是优选的结构。
The present invention is preferable as a safety measure against collision in a case that a power train is disposed to be offset to one of left and right sides.
本发明涉及热塑性树脂组合物和由其形成的模塑产品。
The present invention relates to a thermoplastic resin composition and a molded product formed therefrom.
更特别地，本发明涉及具有良好的耐候性、抗菌性能、抗冲击性、流动性等的热塑性树脂组合物，和由其形成的模塑产品。
More particularly, the present invention relates to a thermoplastic resin composition which has good weather resistance, antibacterial properties, impact resistance, flowability, and the like, and a molded product formed therefrom.
作为热塑性树脂，橡胶改性的芳族乙烯基共聚物树脂，比如丙烯腈-丁二烯-苯乙烯共聚物树脂(ABS树脂)，在机械性能、加工性、外观等方面具有良好的性能，并且广泛地用作电气产品/电子产品、汽车、建筑物等的内部/外部材料。
As a thermoplastic resin, a rubber-modified aromatic vinyl copolymer resin such as an acrylonitrile-butadiene-styrene copolymer resin (ABS resin) has good properties in terms of mechanical properties, processability, external appearance, and the like, and is broadly used as interior/exterior materials for electric/electronic products, automobiles, buildings, and the like.
然而，随着时间的推移，使用这种橡胶改性的芳族苯乙烯类共聚物制造的家用电器电子产品可遭受其表面上泛黄变色和细菌的传播。
However, home appliance electronic products manufactured using such a rubber-modified aromatic styrene-based copolymer can suffer from yellowing discoloration and propagation of bacteria on the surfaces thereof over time.
使用抗细菌剂、风化稳定剂等以提高树脂组合物的耐候性和抗菌性能可造成相容性和抗冲击性的劣化，以及注射模塑时裂纹的产生。
Use of an antibacterial agent, a weathering stabilizer and the like to improve weather resistance and antibacterial properties of a resin composition can cause deterioration in compatibility and impact resistance, and generation of cracks upon injection molding.
所以，需要开发在耐候性、抗菌性能、抗冲击性、流动性等方面具有良好的性能的热塑性树脂组合物。
Therefore, there is a need for development of a thermoplastic resin composition which has good properties in terms of weather resistance, antibacterial properties, impact resistance, flowability, and the like.
本发明的背景技术公开在韩国专利号10-0988999等中。
The background technique of the present invention is disclosed in Korean Patent No. 10-0988999 and the like.
本发明的一个方面是提供在耐候性、抗菌性能、抗冲击性、流动性等方面具有良好的性能的热塑性树脂组合物。
It is one aspect of the present invention to provide a thermoplastic resin composition which has good properties in terms of weather resistance, antibacterial properties, impact resistance, flowability, and the like.
本发明的另一方面是提供由热塑性树脂组合物形成的模塑产品。
It is another aspect of the present invention to provide a molded product formed of the thermoplastic resin composition.
可通过下面描述的本发明实现本发明的上面的方面和其他方面。
The above and other aspects of the present invention can be achieved by the present invention described below.
1、本发明的一个方面涉及热塑性树脂组合物。
One aspect of the present invention relates to a thermoplastic resin composition.
热塑性树脂组合物包括：橡胶改性的乙烯基接枝共聚物；芳族乙烯基共聚物树脂；氧化锌，该氧化锌具有约0.5μm至约3μm的平均粒径(D50)和约1m2/g至约10m2/g的BET比表面积；和C10至C20烷基磷酸酯。
The thermoplastic resin composition includes: a rubber-modified vinyl graft copolymer; an aromatic vinyl copolymer resin; zinc oxide having an average particle diameter (D50) of about 0.5 μm to about 3 μm and a BET specific surface area of about 1 m2/g to about 10 m2/g; and a C10to C20alkyl phosphate.
2、在实施方式1中，热塑性树脂组合物可包括：约100重量份的热塑性树脂，该热塑性树脂包括约10wt％至约40wt％的橡胶改性的乙烯基接枝共聚物和约60wt％至约90wt％的芳族乙烯基共聚物树脂；约0.1重量份至约10重量份的氧化锌；和约0.01重量份至约5重量份的烷基磷酸酯。
In Embodiment 1, the thermoplastic resin composition may include: about 100 parts by weight of a thermoplastic resin including about 10 wt % to about 40 wt % of the rubber-modified vinyl graft copolymer and about 60 wt % to about 90 wt % of the aromatic vinyl copolymer resin; about 0.1 to about 10 parts by weight of the zinc oxide; and about 0.01 to about 5 parts by weight of the alkyl phosphate.
3、在实施方式1或2中，可通过包括芳族乙烯基单体和乙烯基氰化物单体的单体混合物接枝聚合至橡胶聚合物而制备橡胶改性的乙烯基接枝共聚物。
In Embodiment 1 or 2, the rubber-modified vinyl graft copolymer may be prepared by graft polymerization of a monomer mixture including an aromatic vinyl monomer and a vinyl cyanide monomer to a rubber polymer.
4、在实施方式1至3中，芳族乙烯基共聚物树脂可为芳族乙烯基单体和与芳族乙烯基单体可共聚的单体的聚合物。
In Embodiments 1 to 3, the aromatic vinyl copolymer resin may be a polymer of an aromatic vinyl monomer and a monomer copolymerizable with the aromatic vinyl monomer.
5、在实施方式1至4中，在光致发光测量中，氧化锌可具有约0.01至约1.0的峰强度比(B/A)，其中A指示370nm至390nm的波长范围内的峰，并且B指示450nm至600nm的波长范围内的峰。
In Embodiments 1 to 4, the zinc oxide may have a peak intensity ratio (B/A) of about 0.01 to about 1.0, where A indicates a peak in the wavelength range of 370 nm to 390 nm and B indicates a peak in the wavelength range of 450 nm to 600 nm in photoluminescence measurement.
6、在实施方式1至5中，在X射线衍射(XRD)分析中，通过公式1计算，氧化锌可具有在约35°至约37°范围内的峰位度(2θ)和约 至约 的微晶尺寸：
In Embodiments 1 to 5, the zinc oxide may have a peak position degree (2θ) in the range of about 35° to about 37° and a crystallite size of about 1,000 Å to about 2,000 Å in X-ray diffraction (XRD) analysis, as calculated by Equation 1:
其中K为形状因子，λ为X射线波长，β为X射线衍射峰的FWHM值(度)，并且θ为峰位度。
where K is a shape factor, λ, is an X-ray wavelength, β is an FWHM value (degree) of an X-ray diffraction peak, and θ is a peak position degree.
7、在实施方式1至6中，氧化锌和烷基磷酸酯可以以约4:1至约40:1的重量比存在。
In Embodiments 1 to 6, the zinc oxide and the alkyl phosphate may be present in a weight ratio of about 4:1 to about 40:1.
8、在实施方式1至7中，按照ASTM D4459，基于在具有50mm×90mm×3mm的尺寸的注射模塑的样品上测量的初始颜色值(L0*、a0*、b0*)和在风化测试300小时之后测量的样品的颜色值(L1*、a1*、b1*)，通过公式2计算，热塑性树脂组合物可具有约0.5至约1.7的色差(ΔE)。
In Embodiments 1 to 7, the thermoplastic resin composition may have a color variation (ΔE) of about 0.5 to about 1.7, as calculated by Equation 2 based on initial color values (L0*, a0*, b0*) measured on an injection-molded specimen having a size of 50 mm×90 mm×3 mm and color values (L1*, a1*, b1*) of the specimen measured after weathering testing for 300 hours in accordance with ASTM D4459.
其中ΔL*为风化测试之前和之后的L*值之间的差(L1*-L0*)，，Δa*为风化测试之前和之后的a*值之间的差(a1*-a0*)，并且Δb*为风化测试之前和之后的b*值之间的差(b1*-b0*)。
where ΔL* is a difference (L1*-L0*) between L* values before and after weathering test, Δa* is a difference (a1*−a0*) between a* values before and after weathering test, and Δb* is a difference (b1*−b0*) between b* values before and after weathering test.
9、在实施方式1至8中，按照JIS Z 2801，分别用金黄色葡萄球菌和大肠杆菌接种5cm×5cm样品并且在35℃和90％RH的条件下培养24小时之后测量，热塑性树脂组合物针对金黄色葡萄球菌和大肠杆菌中的每一种可具有约2至约7的抗菌活性。
In Embodiments 1 to 8, the thermoplastic resin composition may have an antibacterial activity of about 2 to about 7 against each of Staphylococcus aureusand Escherichia coli, as measured after inoculation of 5 cm×5 cm specimens with Staphylococcus aureusand Escherichia coli, respectively, and culturing under conditions of 35° C. and 90% RH for 24 hours in accordance with JIS Z 2801.
10、在实施方式1至9中，当按照ASTM D256，在6.4mm厚的样品上在23℃下测量时，热塑性树脂组合物可具有约17kgf·cm/cm至约30kgf·cm/cm的Izod缺口冲击强度。
In Embodiments 1 to 9, the thermoplastic resin composition may have a notched Izod impact strength of about 17 kgf·cm/cm to about 30 kgf·cm/cm, as measured on a 6.4 mm thick specimen at 23° C. in accordance with ASTM D256.
11、在实施方式1至10中，当按照ASTM D256，在6.4mm厚的样品上在-30℃下测量时，热塑性树脂组合物可具有约10kgf·cm/cm至约20kgf·cm/cm的Izod缺口冲击强度。
In Embodiments 1 to 10, the thermoplastic resin composition may have a notched Izod impact strength of about 10 kgf·cm/cm to about 20 kgf·cm/cm, as measured on a 6.4 mm thick specimen at −30° C. in accordance with ASTM D256.
12、在实施方式1至11中，当按照ASTM D1238，在200℃和5kg的载荷的条件下测量时，热塑性树脂组合物可具有约2g/10min至约5g/10min的熔体流动指数(MI)。
In Embodiments 1 to 11, the thermoplastic resin composition may have a melt-flow index (MI) of about 2 g/10 min to about 5 g/10 min, as measured under conditions of 200° C. and a load of 5 kg in accordance with ASTM D1238.
13、本发明的另一方面涉及模塑产品。
Another aspect of the present invention relates to a molded product.
该模塑产品由根据实施方式1至12中的任一项所述的热塑性树脂组合物形成。
The molded product is formed of the thermoplastic resin composition according to any one of Embodiments 1 to 12.
本发明提供了在耐候性、抗菌性能、抗冲击性、流动性等方面具有良好的性能的热塑性树脂组合物，以及由其形成的模塑产品。
The present invention provides a thermoplastic resin composition which has good properties in terms of weather resistance, antibacterial properties, impact resistance, flowability, and the like, and a molded product formed of the same.
1.一种用于旋转钻机的旋转变速箱，所述旋转变速箱构造成安装到所述旋转钻机的引导件，所述旋转变速箱包括：
A rotary gearbox for a rotary drill rig, the rotary gearbox configured to mount to a guide of the rotary drill rig, the rotary gearbox comprising: a plurality of gears; and a gearbox housing comprising: a gear train portion housing the plurality of gears; and a mounting portion defining a mounting surface for mounting the gearbox housing to the guide, wherein at least a majority of the mounting surface is spaced away from the gear train portion relative to a longitudinal axis of the rotary gearbox, wherein the mounting surface includes a keyway extending transverse to the direction of the longitudinal axis, and wherein a spacer extends between the mounting surface and the guide and the spacer includes a key configured to be received within the keyway.
变速箱壳体，所述变速箱壳体包括：
9. (canceled)
容纳所述多个齿轮的齿轮系部分；以及
10.
限定用于将所述变速箱壳体安装到所述引导件的安装表面的安装部分，
The rotary gearbox of claim 7, wherein the spacer is bolted between the guide and the gearbox housing.
其中所述安装表面的至少大部分相对于所述旋转变速箱的纵向轴线与所述齿轮系部分隔开。
11.- 20. (canceled)
2.根据权利要求1所述的旋转变速箱，其中所述安装表面包括横向于所述纵向轴线的方向延伸的键槽。
A rotary gearbox for a rotary drill rig, the rotary gearbox configured to mount to a guide of the rotary drill rig, the rotary gearbox comprising: a plurality of gears; and a gearbox housing comprising: a gear train portion housing the plurality of gears; and a mounting portion defining a mounting surface for mounting the gearbox housing to the guide, wherein at least a majority of the mounting surface is spaced away from the gear train portion relative to a longitudinal axis of the rotary gearbox, wherein the mounting surface includes a keyway extending transverse to the direction of the longitudinal axis, and further comprising a second mounting surface spaced apart from and coplanar with the mounting surface, and wherein the keyway extends across both the mounting surface and the second mounting surface.
3.根据权利要求2所述的旋转变速箱，其中间隔件在所述安装表面与所述引导件之间延伸，并且所述间隔件包括构造成接收在所述键槽内的键。
The rotary gearbox of claim 21, wherein a first spacer extends between the mounting surface and the guide and the first spacer includes a key configured to be received within the keyway in the mounting surface, and wherein a second spacer extends between the second mounting surface and the guide and the second spacer includes a second key configured to be received within the keyway in the second mounting surface.
4.根据权利要求2所述的旋转变速箱，还包括与所述安装表面间隔开并且与所述安装表面共面的第二安装表面，并且其中所述键槽跨越所述安装表面和所述第二安装表面两者延伸。
The rotary gearbox of claim 22, further comprising a third mounting surface opposite the mounting surface and a fourth mounting surface opposite the second mounting surface, wherein the third mounting surface is spaced apart from and coplanar with the fourth mounting surface, wherein a second keyway extends across both the third mounting surface and the fourth mounting surface.
5.根据权利要求1-4中任一项所述的旋转变速箱，还包括：
24.
第二导管，所述第二导管至少部分地延伸穿过所述变速箱壳体，所述第二导管具有限定入口的第二端部，所述第二导管能够相对于所述第一导管和所述变速箱壳体旋转，并且与所述第一导管同轴地布置，其中所述第一导管的第一端部接收于所述第二导管的第二端部内；以及
A rotary gearbox for a rotary drill rig, the rotary gearbox configured to mount to a guide of the rotary drill rig, the rotary gearbox comprising: a plurality of gears; and a gearbox housing comprising: a gear train portion housing the plurality of gears; and a mounting portion defining a mounting surface for mounting the gearbox housing to the guide, wherein at least a majority of the mounting surface is spaced away from the gear train portion relative to a longitudinal axis of the rotary gearbox; and a first conduit fixably attached relative to the gearbox housing and having a first end portion defining an exit; a second conduit extending at least partially through the gearbox housing, the second conduit having a second end portion defining an inlet, the second conduit being rotatable relative to the first conduit and the gearbox housing, and arranged coaxially with the first conduit, wherein the first end of the first conduit is received within the second end portion of the second conduit; and a sealing arrangement positioned radially between the first end portion of the first conduit and the second portion of the second conduit, wherein the exit of the first conduit is downstream from the sealing arrangement.
密封布置，所述密封布置沿径向定位于所述第一导管的第一端部与所述第二导管的第二端部之间，
The rotary gearbox of claim 24, wherein the sealing arrangement is mounted to rotate with the second conduit.
其中所述第一导管的出口在所述密封布置下游。
26.
6.根据权利要求5所述的旋转变速箱，其中所述密封布置安装成与所述第二导管一起旋转。
The rotary gearbox of claim 24, wherein the sealing arrangement is mounted in the second end of the second conduit.
7.根据权利要求5或6所述的旋转变速箱，其中所述密封布置包括串联布置的多个环形密封件。
The rotary gearbox of claim 24, wherein the sealing arrangement includes a plurality of annular seals arranged in series.
8.根据权利要求5-7中任一项所述的旋转变速箱，还包括：
28.
第一滚柱轴承，所述第一滚柱轴承安装在所述变速箱壳体内，邻近所述第二导管的第二端部；
The rotary gearbox of claim 24, further comprising: a first roller bearing mounted within the gearbox housing adjacent the second end portion of the second conduit; a second roller bearing mounted within the gearbox housing adjacent a distal end of the mounting portion; and a third roller bearing mounted within the gearbox housing between the first roller bearing and the second roller bearing.
第二滚柱轴承，所述第二滚柱轴承安装在所述变速箱壳体内，邻近所述安装部分的远端；以及
29.
第三滚柱轴承，所述第三滚柱轴承安装在所述变速箱壳体内，在所述第一滚柱轴承与所述第二滚柱轴承之间。
The rotary gearbox of claim 28, wherein the first roller bearing is mounted within the gear train portion of the gearbox housing and the second and third roller bearings are mounted within the mounting portion of the gearbox housing.
9.根据权利要求8所述的旋转变速箱，其中所述第一滚柱轴承安装在所述变速箱壳体的齿轮系部分内，并且所述第二滚柱轴承和所述第三滚柱轴承安装在所述变速箱壳体的安装部分内。
30.
10.根据权利要求8或9所述的旋转变速箱，其中所述第二滚柱轴承构造为上拉轴承，并且所述第三滚柱轴承构造为下拉轴承。
The rotary gearbox of claim 28, wherein the second roller bearing is configured as a pull-up bearing and the third roller bearing is configured as a pull-down bearing.
所述主体部分包括呈现有燃烧表面和冠部下表面的冠部；
A piston, comprising: a body portion formed of a ferrous material, said body portion including a crown presenting a combustion surface and undercrown surface, said body portion including a ring belt region depending from said combustion surface, said body portion including a pair of pin bosses depending from said crown and spaced from one another by a pair of skirt sections, a coating disposed on said body portion, and said coating including a fluoropolymer and having a thickness of 25 microns to 1 millimeter.
所述主体部分包括从所述燃烧表面垂下的环形带区域；
2.
所述主体部分包括从所述冠部垂下并由一对裙边部分彼此隔开的一对销凸起；
The piston of claim 1, wherein said coating further includes silicone, polysilane, polysilazane, and/or a thermoset resin.
涂层，涂设在所述主体部分上，以及
3.
2.根据权利要求1所述的活塞，其中，所述涂层还包括硅树脂、聚硅烷、聚硅氮烷、和/或热固性树脂。
The piston of claim 1, wherein said fluoropolymer of said coating includes polytetrafluoroethylene, fluorosilane, fluorocarbon, fluoroplastic resin, and/or perfluoroplastic.
3.根据权利要求1所述的活塞，其中，所述涂层的所述氟聚合物包括聚四氟乙烯、氟硅烷、碳氟化合物、氟塑料树脂、和/或全氟塑料。
4.
4.根据权利要求1所述的活塞，其中，所述涂层在200至400℃的温度下降低了所述主体部分上的碳沉积物或焦化的化学结合。
The piston of claim 1, wherein said coating reduces chemical bonding of carbon deposits or coking on said body portion at temperatures ranging from 200 to 400° C.,
6.根据权利要求1所述的活塞，其中，所述主体部分包括围绕所述主体部分的所述冠部与下部之间的中心轴线周向延伸的冷却通道。
5.
7.根据权利要求6所述的活塞，其中，所述主体部分的所述下部包括所述环形带区域、所述销凸起和所述裙边部分的至少一部分；
The piston of claim 1, wherein said coating is disposed on at least one of the following: said undercrown surface, least one ring groove of said ring belt region, at least one land of said ring belt region, at least one of said pin bosses, and at least one of said skirt sections.
所述冠部包括与所述中心轴线间隔开并且围绕所述中心轴线周向延伸的上肋；
6.
所述主体部分的所述下部包括与所述上肋对齐并围绕所述中心轴线周向延伸的下肋；
The piston of claim 1, wherein said body portion includes a cooling gallery extending circumferentially around a center axis between said crown and a lower section of said body portion.
9.根据权利要求8所述的活塞，其中，所述冠部下表面包括设置在所述中心轴线处并且在所述销凸起和所述裙边部分之间的中心区域，并且所述冠部下表面包括设置在所述销凸起和所述环形带区域之间的凹穴。
The piston of claim 6, wherein said lower section of said body portion includes at least a portion of said ring belt region, said pin bosses, and said skirt sections, said crown includes an upper rib spaced from said center axis and extending circumferentially around said center axis, said lower section of said body portion includes a lower rib aligned with said upper rib and extending circumferentially around said center axis, said upper rib is welded to said lower rib, said lower section of said body portion includes a lower wall extending radially between said ribs, and said cooling gallery is defined by said ring belt region, said ribs, said undercrown surface, and said lower surface.