WO2013082826A1

WO2013082826A1 - Gearbox

Info

Publication number: WO2013082826A1
Application number: PCT/CN2011/083869
Authority: WO
Inventors: 宋永乐; 马飞; 罗明轩; 柏厚义; 赖东; 赵坤; 张晓春; 张鑫; 袁隆华; 康祯
Original assignee: 重庆望江工业有限公司
Priority date: 2011-12-08
Filing date: 2011-12-13
Publication date: 2013-06-13
Also published as: CN102425652A

Abstract

A gearbox comprises an input shaft, an input shaft bearing, an output shaft bearing (9, 10), a box body (1), and an output shaft (2). The input shaft is supported on the box body (1) through the input shaft bearing. The gearbox further comprises a detachable sub-box body (3) disposed on the box body (1). The output shaft (2) is supported in the sub-box body (3) through the output shaft bearing (9, 10). The output shaft (2) realizes power transmission with the input shaft through a gear on the output shaft. The output shaft (2) is mounted in the sub-box body (3), so that the sub-box body (3) is connected to the box body (1) in a detachable manner. By detaching the sub-box body (3) from the box body (1), the output shaft (2) can be removed and replaced easily and conveniently, thereby facilitating the repair of the gearbox and reducing the repair costs.

Description

一种齿轮箱 Gear box

本申请要求于 2011 年 12 月 08 日提交中国专利局、申请号为 201110406672.9、发明名称为 "一种齿轮箱" 的中国专利申请的优先权，其全部内容通过引用结合在本申请中。 The present application claims priority to Chinese Patent Application No. 2011-1040667, filed on Dec. 08, 2011, the entire disclosure of which is hereby incorporated by reference.

技术领域 Technical field

本实用新型涉及机械传动技术领域，特别涉及一种齿轮箱。背景技术 The utility model relates to the technical field of mechanical transmission, in particular to a gear box. Background technique

齿轮箱是传递动力和运动的机械装置，具有悠久的历史。齿轮箱由于具有速比大、传递功率大、可靠性高、传动比精准等特点，是大多数机械必不可少的部件。 The gearbox is a mechanical device that transmits power and motion and has a long history. The gearbox is an indispensable component of most machinery due to its large speed ratio, high transmission power, high reliability and accurate transmission ratio.

大多时候，齿轮箱工作环境十分恶劣，有时甚至处于几十米高的密闭的机抢内部，这些恶劣环境往往为齿轮箱出现故障后的维修带来困难，增加维护成本。齿轮箱发生故障率较高的是齿轮箱输出轴部分，目前的齿轮箱设计是通过上下箱体的剖分结构将其输出轴安装进入箱体内部，以便输出轴的拆卸维修，该种方案从一定程度上解决了输出轴拆卸难题，但其设计需考虑输出轴的刚性、振动、密封、油供等不利于传动链的长期可靠运行因素，缩短了输出轴的使用寿命，增加了齿轮箱的维修频率。 Most of the time, the gearbox has a very harsh working environment, and sometimes it is even inside a tens of meters high closed machine. These harsh environments often cause difficulties in repairing the gearbox after failure, increasing maintenance costs. The gearbox has a higher failure rate than the output shaft of the gearbox. The current gearbox design is to install the output shaft into the cabinet through the split structure of the upper and lower casings, so that the output shaft can be disassembled and repaired. To some extent, the output shaft disassembly problem is solved, but the design needs to consider the rigidity, vibration, sealing, oil supply of the output shaft, etc., which is not conducive to the long-term reliable operation of the transmission chain, shortening the service life of the output shaft, and increasing the gearbox. Maintenance frequency.

因此，如何使输出轴可以筒单方便的拆卸更换，从而方便齿轮箱的维修，降低维修成本，是本技术领域工作人员亟待解决的问题。发明内容 Therefore, how to make the output shaft can be easily disassembled and replaced by the single cylinder, thereby facilitating the maintenance of the gear box and reducing the maintenance cost, is an urgent problem to be solved by the workers in the technical field. Summary of the invention

有鉴于此，本实用新型提供了一种齿轮箱，使输出轴可以筒单方便的拆卸更换，从而方便齿轮箱的维修，降低维修成本。 In view of this, the utility model provides a gear box, which can make the output shaft can be easily disassembled and replaced, thereby facilitating the maintenance of the gear box and reducing the maintenance cost.

为实现上述目的，本实用新型提供如下技术方案： In order to achieve the above object, the utility model provides the following technical solutions:

一种齿轮箱，包括输入轴、输入轴轴承、输出轴轴承、箱体和输出轴，所述输入轴通过所述输入轴轴承支撑于所述箱体上，还包括可拆卸的设置于所述箱体上的子箱体，所述输出轴通过输出轴轴^支撑于所述子箱体内，且所述输出轴通过其上的齿轮与所述输入轴实现动力传输。优选的，所述子箱体为整体结构，所述输出轴和所述输出轴轴承通过所述子箱体上的安装孔装配进入所述子箱体。 A gearbox includes an input shaft, an input shaft bearing, an output shaft bearing, a casing and an output shaft, wherein the input shaft is supported on the casing by the input shaft bearing, and further comprising a detachable a sub-tank on the casing, the output shaft is supported in the sub-tank by an output shaft, and the output shaft transmits power to the input shaft through a gear on the shaft. Preferably, the sub-tank is a unitary structure, and the output shaft and the output shaft bearing are assembled into the sub-tank through a mounting hole on the sub-tank.

优选的，所述子箱体与所述箱体的连接端通过至少 10个均勾分布的螺栓连接。 Preferably, the connecting end of the sub-tank and the box is connected by at least 10 bolts which are uniformly distributed.

优选的，所述子箱体与所述箱体间设置有密封圏。 Preferably, a sealing jaw is disposed between the sub-tank and the box.

优选的，还包括限制所述子箱体与所述箱体的相对位置的定位销。 Preferably, a positioning pin that limits the relative position of the sub-tank to the case is further included.

优选的，所述输出轴为齿轮轴。 Preferably, the output shaft is a gear shaft.

优选的，所述子箱体上设置有观察盖。 Preferably, the sub-box is provided with an observation cover.

优选的，所述子箱体开设有安装温度传感器的开孔。 Preferably, the sub-box is provided with an opening for mounting a temperature sensor.

优选的，所述子箱体上设置有油孔。 Preferably, the sub-tank is provided with an oil hole.

优选的，所述输出轴一端安装的所述输出轴轴承为圓柱滚子轴承，另一端安装的所述输出轴轴承为两个对装的圓锥滚子轴承，两个对装的所述圓锥滚子轴承中间设置有顶住对装的所述圓锥滚子轴承外圏的村圏。 Preferably, the output shaft bearing installed at one end of the output shaft is a cylindrical roller bearing, and the output shaft bearing mounted at the other end is two oppositely mounted tapered roller bearings, and the two oppositely mounted circular bearings In the middle of the tapered roller bearing, there is a village which is placed against the outer casing of the tapered roller bearing.

从上述的技术方案可以看出，本发明公开的齿轮箱，将输出轴设置于子箱体内，子箱体与箱体为可拆卸的连接结构，在输出轴发生故障需要更换时，将子箱体由箱体上拆卸下来，使设置于子箱体内的输出轴可以筒单方便的拆卸更换，从而方便了齿轮箱的维修，降低了维修成本。附图说明 It can be seen from the above technical solution that the gear box disclosed in the present invention has the output shaft disposed in the sub-tank, and the sub-tank and the box are detachable connection structures. When the output shaft fails and needs to be replaced, the sub-box is The body is detached from the box body, so that the output shaft disposed in the sub-tank can be easily disassembled and replaced, thereby facilitating the maintenance of the gear box and reducing the maintenance cost. DRAWINGS

图 1为本实用新型实施例提供的齿轮箱的示意图； Figure 1 is a schematic view of a gear box according to an embodiment of the present invention;

图 2为本实用新型实施例提供的齿轮箱的子箱体部分的示意图；图 3为本实用新型实施例提供的齿轮箱的子箱体部分的***图。具体实施方式 2 is a schematic view of a sub-casing portion of a gear box according to an embodiment of the present invention; FIG. 3 is an exploded view of a sub-casing portion of the gear box according to an embodiment of the present invention. detailed description

本实用新型公开了一种齿轮箱，使输出轴可以筒单方便的拆卸更换，从而方便齿轮箱的维修，降低维修成本。 The utility model discloses a gear box, which can make the output shaft can be easily disassembled and replaced by the single cylinder, thereby facilitating the maintenance of the gear box and reducing the maintenance cost.

下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本实用新型保护的范围。 The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. Based on the embodiments of the present invention, one of ordinary skill in the art All other embodiments obtained by a member without creative work are within the scope of protection of the present invention.

请参考图 1、图 2和图 3 , 图 1为本实用新型实施例提供的齿轮箱的示意图；图 2为本实用新型实施例提供的齿轮箱的子箱体部分的示意图；图 3为本实用新型实施例提供的齿轮箱的子箱体部分的***图。 1 is a schematic view of a gear box according to an embodiment of the present invention; An exploded view of a sub-casing portion of a gearbox provided by an embodiment of the invention.

在具体实施例中，本发明公开的齿轮箱包括输入轴、输入轴轴承、输出轴轴承、箱体 1和输出轴 2, 输入轴通过输入轴轴承支撑于箱体 1上，本发明的重点在于，还包括可拆卸的设置于箱体 1上的子箱体 3 , 输出轴 2通过输出轴轴承支撑于子箱体 3内，且输出轴 2通过其上的齿轮与输入轴实现动力传输。 In a specific embodiment, the gearbox disclosed in the present invention includes an input shaft, an input shaft bearing, an output shaft bearing, a casing 1 and an output shaft 2, and the input shaft is supported on the casing 1 through an input shaft bearing, and the focus of the present invention is The utility model further comprises a detachable sub-tank 3 disposed on the casing 1. The output shaft 2 is supported in the sub-tank 3 through the output shaft bearing, and the output shaft 2 realizes power transmission through the gears on the input shaft.

本发明公开的齿轮箱，将输出轴 2设置于子箱体 3内，子箱体 3与箱体 1 为可拆卸的连接结构，在输出轴 2发生故障需要更换时，将子箱体 3由箱体 1 上拆卸下来，使设置于子箱体 3内的输出轴 2可以筒单方便的拆卸更换，从而方便了齿轮箱的维修，降低了维修成本。 In the gearbox disclosed by the present invention, the output shaft 2 is disposed in the sub-tank 3, and the sub-tank 3 and the casing 1 are detachably connected. When the output shaft 2 fails and needs to be replaced, the sub-tank 3 is The box body 1 is detached, so that the output shaft 2 disposed in the sub-tank 3 can be easily disassembled and replaced, thereby facilitating the maintenance of the gear box and reducing the maintenance cost.

为了提高子箱体 3的强度，使子箱体 3与输出轴轴承的贴合部分安装更紧密，将子箱体 3设置为整体结构，输出轴 2和输出轴轴 7 通过子箱体 3上的安装孔装配进入子箱体 3。这种子箱体 3的结构使输出轴部件的结构强度、刚度、减振、密封、油供润滑和承载能力等方面都有了相应提高。 In order to increase the strength of the sub-tank 3, the fitting portion of the sub-tank 3 and the output shaft bearing is tightly mounted, the sub-tank 3 is set as a unitary structure, and the output shaft 2 and the output shaft 7 are passed through the sub-tank 3 The mounting holes are assembled into the sub-tank 3. The structure of the sub-tank 3 has a corresponding improvement in the structural strength, rigidity, vibration damping, sealing, oil lubrication and load carrying capacity of the output shaft member.

也可以将子箱体 3设置为剖分式结构，子箱体 3由上子箱体和下子箱体两部分组成，上子箱体和下子箱体的安装面通过输出轴 2轴心，上子箱体和下子箱体用螺栓连接，通过子箱体 3的剖分结构达到输出轴 2相对于子箱体 3的安装或拆卸。 The sub-tank 3 can also be configured as a split-type structure, and the sub-tank 3 is composed of an upper sub-tank and a lower sub-tank, and the mounting faces of the upper sub-tank and the lower sub-tank pass through the output shaft 2 axis, The sub-tank and the lower sub-tank are connected by bolts, and the disassembly structure of the sub-tank 3 reaches the mounting or dismounting of the output shaft 2 with respect to the sub-tank 3.

本实施例中，整体式子箱体 3与箱体 1的连接面为平面，将子箱体 3安装于箱体 1上使箱体 1内与输出轴齿轮啮合的齿轮伸入子箱体 3内与输出轴齿轮啮合传动，由于子箱体 3与箱体 1的连接面为平面，使得加工筒单，安装稳定，提高了子箱体 3与箱体 1间的密封性能。也可以将子箱体 3与箱体 1的连接面设置为凹凸配合面，通过连接面的凹凸配合对子箱体 3与箱体 1的相对位置起到定位的作用。 In this embodiment, the connection surface of the integral sub-tank 3 and the casing 1 is a flat surface, and the sub-tank 3 is mounted on the casing 1 so that the gear meshing with the output shaft gear in the casing 1 extends into the sub-tank 3 The inner and the output shaft gears are meshed and driven. Since the connecting surface of the sub-tank 3 and the casing 1 is flat, the processing cylinder is single and the installation is stable, and the sealing performance between the sub-tank 3 and the casing 1 is improved. The connection surface of the sub-tank 3 and the casing 1 may be provided as an uneven fitting surface, and the relative position of the sub-tank 3 and the casing 1 may be positioned by the concave-convex fitting of the joint surface.

在本实施例中，子箱体 3与箱体 1的连接端通过至少 10个均匀分布的螺栓连接。在箱体 1与子箱体 3强度允许的范围内连接用的螺栓越多子箱体 3与箱体 1间的密封性越好，通过至少 10个均匀分布的螺栓连接子箱体 3与箱体 1 , 使子箱体 3与箱体 1均匀稳定的连接。 In the present embodiment, the connection end of the sub-tank 3 and the case 1 is connected by at least 10 evenly distributed bolts. The more bolts are connected in the range where the strength of the casing 1 and the sub-tank 3 is allowed, the more the sub-tanks 3 and The better the sealing property between the casings 1, the sub-tanks 3 and the casing 1 are connected by at least 10 uniformly distributed bolts, so that the sub-tanks 3 and the casing 1 are uniformly and stably connected.

为了提高子箱体 3与箱体 1间的密封性，本实施例中的子箱体 3与箱体 1 间设置有密封圏 4。 In order to improve the sealing between the sub-tank 3 and the casing 1, a seal 圏 4 is provided between the sub-tank 3 and the casing 1 in this embodiment.

在本实施例中，还包括限制子箱体 3与箱体 1相对位置的移动的定位销 5 , 在子箱体 3与箱体 1的安装端对角设置有两个定位销 5 , 起到定位作用的同时有效的防止了子箱体 3与箱体 1相对于安装面的转动。 In this embodiment, the positioning pin 5 for restricting the movement of the relative position of the sub-tank 3 and the casing 1 is further included, and two positioning pins 5 are disposed diagonally at the mounting end of the sub-tank 3 and the casing 1 to The positioning action effectively prevents the rotation of the sub-tank 3 and the casing 1 relative to the mounting surface.

在本实施例中，输出轴 2为齿轮轴，有效的减少了零件数量，筒化了安装拆卸的步骤，节省了输出轴 2在拆卸替换的时间。也可以将输出轴设置为轴与齿轮通过键连接的结构，分别替换受损部件，避免了材料的浪费。 In the present embodiment, the output shaft 2 is a gear shaft, which effectively reduces the number of parts, and the step of mounting and dismounting, which saves the time for the output shaft 2 to be removed and replaced. It is also possible to set the output shaft to a structure in which the shaft and the gear are connected by a key to replace the damaged component, thereby avoiding material waste.

为了方便观察内部受损情况，判断是否需要更换输出轴部分，本实施例中的子箱体 3上设置有观察盖 6, 观察盖 6为金属材料制成，上面设置有两个方便观察盖 6拿取的把手，通过周边 8个均勾分布的螺母连接在子箱体 3上；观察盖 6与子箱体 3间设置有垫圏，提高子箱体 3的密封性。也可以将观察盖 6 设置为其他结构，如观察盖 6—端可旋动的连接在子箱体 3上，通过水平旋转观察盖 6达到开启或关闭对应的观察孔观察内部受损情况的作用；也可以选用透明树脂材料制成观察盖 6, 通过内嵌方式设置于子箱体 3上。 In order to facilitate the observation of the internal damage, it is judged whether the output shaft portion needs to be replaced. The sub-tank 3 in this embodiment is provided with an observation cover 6, which is made of a metal material, and two convenient viewing covers 6 are disposed thereon. The handles taken are connected to the sub-tank 3 by nuts surrounding the eight hooks; the mats are disposed between the observation cover 6 and the sub-tanks 3 to improve the sealing performance of the sub-tanks 3. It is also possible to set the observation cover 6 to other structures. For example, the observation cover 6 is rotatably connected to the sub-tank 3, and the cover 6 is horizontally rotated to open or close the corresponding observation hole to observe the internal damage. The observation cover 6 may also be made of a transparent resin material, and is disposed on the sub-tank 3 by an in-line manner.

在本实施例中，子箱体 3开设有安装温度传感器的开孔 7, 需要测量子箱体 3内部的轴承 9与轴承 10温度的温度传感器***开孔 7。 In the present embodiment, the sub-tank 3 is provided with an opening 7 for mounting a temperature sensor, and a temperature sensor for measuring the temperature of the bearing 9 inside the sub-tank 3 and the bearing 10 is inserted into the opening 7.

在本实施例中的子箱体 3上设置有油孔 8, 方便随时向机体内部的轴承和齿轮部分进行润滑与冷却。 The sub-tank 3 in the present embodiment is provided with an oil hole 8, which facilitates lubrication and cooling of the bearing and the gear portion inside the body at any time.

在本实施例中，输出轴 2两端的输出轴轴 7 部分选用不同的结构。输出轴 2一端安装的输出轴轴承为圓柱滚子轴承 9; 另一端安装的输出轴轴承为两个对装的圓锥滚子轴承 10, 两个对装的圓锥滚子轴承中间设置有顶住对装的圓锥滚子轴承外圏的村圏 11 , 两个对装的圓锥滚子轴承 10外圏分别与村圏 11 相抵。当内部温度上升时，输出轴 2的轴向长度发生轻微变化，通过圓柱滚子轴承 9的内圏与外圏不发生相对分离的轴向移动，调整与输出轴 2的相对位置，适应输出轴 2轴向长度的变化，从而有效的避免了因内部升温使输出轴 2轴向增长致使其弯曲的情况发生。在输出轴 2输出端还套设有挡油盘、密封圏和有孔端盖，将有孔端盖与子箱体 3通过螺栓连接完成子箱体部件的装配。 In the present embodiment, the output shaft shaft 7 at both ends of the output shaft 2 is selected to have a different structure. The output shaft bearing installed at one end of the output shaft 2 is a cylindrical roller bearing 9; the output shaft bearing mounted at the other end is two pairs of tapered roller bearings 10, and the top of the two pairs of tapered roller bearings are provided with a top The village 圏11 of the outer tapered roller bearing is installed, and the two outer cylindrical roller bearings 10 are respectively opposite to the village 圏11. When the internal temperature rises, the axial length of the output shaft 2 slightly changes, and the relative movement of the inner shaft and the outer bore of the cylindrical roller bearing 9 does not occur, and the relative position of the output shaft 2 is adjusted to accommodate the output shaft. 2 The change of the axial length effectively avoids the occurrence of bending due to the axial increase of the output shaft 2 due to the internal temperature rise. At the output end of the output shaft 2, an oil retaining plate, a sealing cymbal and a perforated end cover are also sleeved, and the perforated end cover and the sub-tank 3 are bolted to complete the assembly of the sub-tank parts.

为了提高输出轴 2的密封性能，输出轴 2上套设的密封圏与有孔端盖形成了迷宫式密封结构，有效的降低了油泄漏量。也可以将密封圏设置为迷宫式密封圏，同样达到降低油泄漏量的作用。 In order to improve the sealing performance of the output shaft 2, the sealing ferrule and the perforated end cover of the output shaft 2 form a labyrinth seal structure, which effectively reduces the amount of oil leakage. It is also possible to set the sealing jaw to a labyrinth seal, which also reduces the amount of oil leakage.

为了减少输出轴 2转动时与有孔端盖的孔壁摩擦，本实施例中的有孔端盖孔径大于输出轴 2相应位置的轴径，在输出轴 2相应位置设置沟槽，通过与沟槽配合安装锁紧垫片与锁紧螺母达到轴端锁紧的作用。 In order to reduce the friction between the output shaft 2 and the hole wall of the perforated end cover, the aperture end cover aperture in this embodiment is larger than the corresponding shaft diameter of the output shaft 2, and the groove is provided at the corresponding position of the output shaft 2, through the groove. The groove fits the locking washer and the lock nut to achieve the locking of the shaft end.

本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。 The various embodiments in the present specification are described in a progressive manner, and each embodiment focuses on differences from other embodiments, and the same similar parts between the various embodiments can be referred to each other.

对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本实用新型。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本实用新型的精神或范围的情况下，在其它实施例中实现。因此，本实用新型将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。 The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments are obvious to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but the scope of the invention.

Claims

权利要求 Rights request

1、一种齿轮箱，包括输入轴、输入轴轴承、输出轴轴承、箱体（1 )和输出轴（2), 所述输入轴通过所述输入轴轴承支撑于所述箱体（1)上，其特征在于，还包括可拆卸的设置于所述箱体（1)上的子箱体（3), 所述输出轴（2) 通过输出轴轴承支撑于所述子箱体（3) 内，且所述输出轴（2)通过其上的齿轮与所述输入轴实现动力传输。 A gearbox comprising an input shaft, an input shaft bearing, an output shaft bearing, a housing (1) and an output shaft (2), the input shaft being supported by the housing by the input shaft bearing (1) The utility model further comprises a sub-tank (3) detachably arranged on the box body (1), wherein the output shaft (2) is supported by the sub-box body (3) through an output shaft bearing Internally, and the output shaft (2) transmits power to the input shaft through a gear gear thereon.

2、如权利要求 1所述的齿轮箱，其特征在于，所述子箱体（3)为整体结构，所述输出轴（2)和所述输出轴轴 7 通过所述子箱体（3)上的安装孔装配进入所述子箱体（3)。 2. The gearbox according to claim 1, wherein the sub-tank (3) is of a unitary structure, and the output shaft (2) and the output shaft 7 pass through the sub-tank (3) The mounting holes on the assembly are fitted into the sub-tank (3).

3、如权利要求 1所述的齿轮箱，其特征在于，所述子箱体（3)与所述箱体（ 1 ) 的连接端通过至少 10个均匀分布的螺栓连接。 The gearbox according to claim 1, characterized in that the connection end of the sub-tank (3) and the casing (1) is connected by at least 10 uniformly distributed bolts.

4、如权利要求 3所述的齿轮箱，其特征在于，所述子箱体（3)与所述箱体（1 ) 间设置有密封圏（4)。 The gear case according to claim 3, wherein a seal port (4) is disposed between the sub-tank (3) and the case (1).

5、如权利要求 3所述的齿轮箱，其特征在于，还包括限制所述子箱体（ 3 ) 与所述箱体（ 1 ) 的相对位置的定位销（ 5 )。 5. A gearbox according to claim 3, further comprising a locating pin (5) that limits the relative position of said sub-tank (3) to said housing (1).

6、如权利要求 1所述的齿轮箱，其特征在于，所述输出轴（2)为齿轮轴。 The gearbox according to claim 1, wherein the output shaft (2) is a gear shaft.

7、如权利要求 1所述的齿轮箱，其特征在于，所述子箱体（ 3 )上设置有观察盖（ 6 )。 The gearbox according to claim 1, characterized in that the sub-tank (3) is provided with an observation cover (6).

8、如权利要求 1所述的齿轮箱，其特征在于，所述子箱体（ 3 )开设有安装温度传感器的开孔（7)。 The gearbox according to claim 1, characterized in that the sub-tank (3) is provided with an opening (7) for mounting a temperature sensor.

9、如权利要求 1所述的齿轮箱，其特征在于，所述子箱体（ 3 )上设置有油孔（8)。 The gearbox according to claim 1, characterized in that the sub-tank (3) is provided with an oil hole (8).

10、如权利要求 1所述的齿轮箱，其特征在于，所述输出轴（2)—端安装的所述输出轴轴承为圓柱滚子轴承（9), 另一端安装的所述输出轴轴承为两个对装的圓锥滚子轴承（ 10 ), 两个对装的所述圓锥滚子轴承中间设置有顶住对装的所述圓锥滚子轴承外圏的村圏（11)。 10. The gearbox according to claim 1, wherein said output shaft (2)-end mounted said output shaft bearing is a cylindrical roller bearing (9), and said output shaft bearing is mounted at the other end For two pairs of tapered roller bearings (10), two pairs of the tapered roller bearings are disposed in the middle of the housing of the tapered roller bearing (11) .