WO2020125329A1 - Constant power transmission - Google Patents

Constant power transmission Download PDF

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Publication number
WO2020125329A1
WO2020125329A1 PCT/CN2019/120542 CN2019120542W WO2020125329A1 WO 2020125329 A1 WO2020125329 A1 WO 2020125329A1 CN 2019120542 W CN2019120542 W CN 2019120542W WO 2020125329 A1 WO2020125329 A1 WO 2020125329A1
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WO
WIPO (PCT)
Prior art keywords
gear
side plate
planetary
constant power
power transmission
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Application number
PCT/CN2019/120542
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French (fr)
Chinese (zh)
Inventor
潘国陶
Original Assignee
潘国陶
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN201811546688.8A external-priority patent/CN109372970A/en
Priority claimed from CN201822123763.1U external-priority patent/CN209164522U/en
Application filed by 潘国陶 filed Critical 潘国陶
Publication of WO2020125329A1 publication Critical patent/WO2020125329A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/06—Differential gearings with gears having orbital motion
    • F16H48/10—Differential gearings with gears having orbital motion with orbital spur gears
    • F16H48/11—Differential gearings with gears having orbital motion with orbital spur gears having intermeshing planet gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating

Definitions

  • the present invention relates to the field of transmission machinery, and more specifically, to a constant power transmission.
  • the invention number and the practical new model are 2018101117082 and 2018201977563 respectively.
  • the present invention is based on the principle of the previous application and is further optimized to form a new technical solution.
  • the object of the present invention is to provide a constant power transmission that can further simplify the structure or process and increase the volumetric efficiency.
  • a constant power transmission includes a differential gear train including a ring gear assembly, a sun gear assembly and a planet carrier assembly connected with a planetary gear mechanism, the planetary gear mechanism is provided with Two types of planetary gears, including transmission gears and sealed gears, the planet carrier assembly includes side plates, the side plates and the planetary gear mechanism combined with the ring gear assembly and the sun gear assembly form two high and low volume units, and the two volume units are connected Throttle channel.
  • the present invention has the following preferred or optional solutions:
  • the tooth height coefficients of the transmission gear and the sealing gear are different.
  • the side plate includes a front side plate, a floating side plate, and a rear side plate.
  • a planet wheel shaft is connected between the front side plate and the rear side plate, and the floating side plate is interposed on the planet wheel shaft.
  • a planetary shaft is connected between the front side plate and the rear side plate, and the planetary wheels are connected to the planetary shaft through an eccentric bushing.
  • the planet carrier assembly is provided with a packing block or a packing column.
  • a ferrule is connected between the front side plate and the rear side plate, and a heat sink is provided on the ferrule as needed.
  • the main advantage of the present invention is that it can improve the sealing performance of the transmission and reduce the throttle loss, thereby further improving the transmission efficiency.
  • FIG. 1 is a schematic cross-sectional view of a partial three-dimensional structure of an embodiment of the present invention
  • FIG. 2 is a schematic diagram of the auxiliary explanation of the present invention.
  • a constant power transmission includes a differential gear train.
  • the differential gear train includes an internal ring gear assembly, a sun gear assembly, and a planet carrier assembly connected with a planetary gear mechanism.
  • the planetary gear mechanism is provided with two types of planetary gears, including a transmission gear 20 With the sealing gear 19, the planet carrier assembly includes a side plate, the side plate and the planetary gear mechanism combined with the ring gear assembly and the sun gear assembly form two high- and low-pressure volume units, and a throttle channel is connected between the two volume units. Referring to FIG.
  • the inner ring gear assembly is the inner ring gear 21
  • the sun gear assembly is the sun gear 22 and the input shaft 23 connected or fixed thereto
  • the planet carrier assembly includes side plates
  • the side plates include a front side plate 11 and a floating side plate 12 and the rear side plate 17,
  • the planetary shaft 15 is connected between the front side plate 11 and the rear side plate 17,
  • the floating side plate 12 is axially movable on the planetary shaft 15, the floating side plate 12 and the front side plate 11
  • the gear is the inner ring gear 21, the sun gear 22, the transmission gear 20 and the sealing gear 19;
  • the ferrules 13 are connected between the rear side plates 17, and are fixed to each other by screws to form a planet carrier assembly.
  • the planet gear shaft 15 is also provided with screws to improve the connection strength.
  • the planetary gear mechanism is provided with two kinds of planetary gears, including a transmission gear 20 and a sealing gear 19.
  • the transmission gear 20 and the sealing gear 19 are sleeved on the planetary gear shaft 15 using an eccentric shaft sleeve 18, and the inner ring gear 21 and the sun gear are connected by a gear 22, the rear side plate 17 and the floating side plate 12 can be combined with the inner ring gear 21, the sun gear 22, the transmission gear 20, and the sealing gear 19 to construct two high and low volume units.
  • the transmission gear 20 and the sealing gear 19 can have multiple And the number is equal, and they are staggered with each other, so the high and low pressure volume units constructed in this way will also increase.
  • a throttle channel is connected between the two volume units.
  • the throttle channel communicates with the high-pressure volume unit.
  • a throttle valve can be set on the throttle channel to achieve constant power speed regulation.
  • the throttle channel is suitable for passing The side plate and the journal are led out to the housing to facilitate the setting of the throttle valve. Since internal leakage itself is also a throttling process, the throttling channel can also be a leakage channel between high and low pressure volume units, or artificially set a small channel on the side plate. In this case, it is not necessary to use a valve to adjust the speed.
  • the present invention is similar to a coupling with a speed regulation capability, and is applicable to a condition with relatively simple working conditions.
  • the present invention is basically similar to the structure of the previous application.
  • the main difference is that the sealing gear 19 is used to replace the role of the isolation block. Knowing the structure and scheme in the previous application in advance helps to better understand the present invention.
  • the side plate and the isolation block combine three gears: the ring gear 21, the sun gear 22 and the planetary gear to form a high and low pressure volume unit.
  • the sun gear 22 When the sun gear 22 is driven, the planet The wheel can rotate around its own center, or it can make rolling orbits with the tooth point as the fulcrum. The force arms of these two motion modes are different.
  • the amount of oil compressed by rotation is greater than the revolution, according to the pump
  • the differential gear train will tend to revolve and the output torque of the planet carrier assembly will be obtained. It is not enough to satisfy the pump effect.
  • the input end or output end must have a superimposed combined torque to have a torsion effect.
  • the high-pressure volume unit can only It is built on the right side of the planetary gear. At this time, the input torque, pump torque and motor torque are all in the same direction. After superposition, the planetary carrier assembly can get the same direction of the combined torque output. When the oil pressure is different, the combined torque is also different, so It can achieve torsion. If the high-pressure volume unit is built on the left side of the planetary gear, even if the pump effect is generated by the gear displacement, there is always no superimposed total torque output, which is invalid. The previously applied solution has been physically verified, and it is easy to understand the present invention based on the above. Referring to FIG.
  • the isolation block is removed in the present invention and the sealing gear 19 is used instead.
  • the sun gear 22 is driven clockwise, (pressure oil QA -Oil absorption QB)>0
  • the transmission gear 20 meets the pump effect and has a combined torque
  • the sealing gear 19 meets the motor effect
  • the torque generated by the motor effect depends on the effective displacement
  • ( The oil absorption QD-pressure oil QC) is very small, so the reverse torque generated by the motor effect due to self-interference is small.
  • the present invention has the following preferred or optional solutions:
  • the drive gear 20 and the seal gear 19 have different addendum coefficients. This is an ideal way to adjust the total displacement relationship. Increasing the pressure angle of the gear can increase the difference. If the gear is adjusted by displacement and other means, the displacement difference is adjusted to zero at the standard center distance, then the center distance of the transmission gear 20 is increased, and the center distance of the seal gear 19 is reduced (pressure oil QA) -Oil absorption QB)>0, (pressure oil QC-oil absorption QD)>0, this can also meet the pump effect, but this method needs to increase the backlash, and the gear is also easy to wear.
  • the side plate includes a front side plate 11, a floating side plate 12 and a rear side plate 17.
  • a planetary shaft 15 is connected between the front side plate 11 and the rear side plate 17.
  • the floating side plate 12 is inserted on the planetary shaft 15.
  • the floating side plate 12 mainly plays a role of end face compensation, and has been widely used in the field of high pressure to significantly improve the volumetric efficiency.
  • the sealing gear 19 has a toothed seal and end face compensation, its sealing effect will be superior to the isolation block solution.
  • the end face and the tooth gap can be eliminated by running-in or grinding. If metal self-healing agent is added to the oil during work, it can further eliminate the small gap and strengthen the contact characteristics. This is also the use of the sealing gear 19 instead of the isolation block in the present invention.
  • a plurality of floating side plates 12 can be provided, and multiple gear sets can be combined to form a series structure, which can increase the transmission capacity.
  • a planetary shaft 15 is connected between the front side plate 11 and the rear side plate 17, and the planetary gear is connected to the planetary shaft 15 through an eccentric bush 18.
  • FIG. 2 after the gear of the present invention is subjected to oil pressure, there will be 6 theoretical contact points a, b, c, d, e, f on the plane, but due to actual manufacturing or wear gaps, these 6 points Under rigid conditions, there can only be at most 5 contacts. Even if there are multiple planetary gears of the same type, the three points of each planetary gear cannot guarantee simultaneous contact. Although the same type of planetary gears can be improved by running in, but because The relative positions of the contact points are different, and the running-in of different planet wheels is also invalid.
  • the tooth-engaging portion is subjected to a large force.
  • it is necessary to achieve 6-point contact in practice.
  • the planetary gear shaft 15 can also be suspended to solve this problem, that is, the two ends of the planetary gear shaft 15 are connected to the side plates through the oil cylinder, but the oil cylinder has many disadvantages.
  • the planet carrier assembly is provided with a packing block or packing column 16.
  • a packing block or packing column 16 is connected between the side plates, and the purpose is to fill the gap between the two planet wheels to reduce oil compression loss and heat generation.
  • a centrifugal blade can be arranged on the side plate, and a channel is provided in the packing block or packing column 16. After introducing low-pressure cooling oil, it can be used for heat dissipation, or the cooling oil can be directly charged into the low-pressure volume unit to replace part of the hot oil.
  • a ferrule 13 is connected between the front side plate 11 and the rear side plate 17, and a heat sink is provided on the ferrule 13 as needed.
  • the ferrule 13 can make the planet carrier assembly play a role in strengthening the connection. Since the interior of the present invention is filled with metal components that are beneficial to heat dissipation, when applied to small and medium powers, the heat can be dissipated by itself, such as immersed in the oil pool, or further provided with fins on the ferrule 13 to dissipate heat by air cooling.
  • the main advantage of the present invention is that it can improve the sealing performance of the transmission and reduce the throttle loss, thereby further improving the transmission efficiency.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Retarders (AREA)

Abstract

A constant power transmission, comprising a differential gear train, wherein the differential gear train comprises an inner ring gear assembly, a sun gear assembly, and a planet carrier assembly connected to a planetary gear mechanism; the planetary gear mechanism is provided with two types of planetary gears, comprising a transmission gear (20) and a sealing gear (19); the planet carrier assembly comprises side plates; the side plates and the planetary gear mechanism combine with the inner ring gear assembly and the sun gear assembly to form a high volume unit and a low volume unit; and a throttle channel is connected between the two volume units. The present constant power transmission may improve the sealing performance of the transmission and reduce throttle loss, thereby further improving transmission efficiency.

Description

一种恒功率变速器Constant power transmission 技术领域Technical field
本发明涉及传动机械领域，更具体的说，涉及一种恒功率变速器。The present invention relates to the field of transmission machinery, and more specifically, to a constant power transmission.
背景技术Background technique
本人在先同日申请有“一种无级变速器”,发明号和实用新型号分别为2018101117082、2018201977563，本发明依据在先申请的原理，进一步优化后形成一种新的技术方案。I applied for "a continuously variable transmission" on the same day, the invention number and the practical new model are 2018101117082 and 2018201977563 respectively. The present invention is based on the principle of the previous application and is further optimized to form a new technical solution.
发明内容Summary of the invention
针对在先申请的不足或改进，本发明的目的是提供一种恒功率变速器，能进一步简化结构或工艺，并提高容积效率。In view of the deficiencies or improvements in the previous application, the object of the present invention is to provide a constant power transmission that can further simplify the structure or process and increase the volumetric efficiency.
本发明的目的是这样实现的：一种恒功率变速器，包括差动轮系，差动轮系包括内齿圈组件、太阳轮组件和连接有行星轮机构的行星架组件，行星轮机构设置有两种行星轮，包括传动齿轮和密封齿轮，行星架组件包括侧板，侧板和行星轮机构结合内齿圈组件、太阳轮组件形成高低压两种容积单元，两种容积单元之间连接有节流通道。The object of the present invention is achieved as follows: A constant power transmission includes a differential gear train including a ring gear assembly, a sun gear assembly and a planet carrier assembly connected with a planetary gear mechanism, the planetary gear mechanism is provided with Two types of planetary gears, including transmission gears and sealed gears, the planet carrier assembly includes side plates, the side plates and the planetary gear mechanism combined with the ring gear assembly and the sun gear assembly form two high and low volume units, and the two volume units are connected Throttle channel.
在上述方案的基础上，本发明有以下优选或可选方案：Based on the above solutions, the present invention has the following preferred or optional solutions:
传动齿轮和密封齿轮的齿顶高系数不同。The tooth height coefficients of the transmission gear and the sealing gear are different.
侧板包括前侧板、浮动侧板和后侧板，前侧板与后侧板之间连接有行星轮轴，浮动侧板穿置在行星轮轴上。The side plate includes a front side plate, a floating side plate, and a rear side plate. A planet wheel shaft is connected between the front side plate and the rear side plate, and the floating side plate is interposed on the planet wheel shaft.
前侧板与后侧板之间连接有行星轮轴，行星轮通过偏心轴套连接行星轮轴。A planetary shaft is connected between the front side plate and the rear side plate, and the planetary wheels are connected to the planetary shaft through an eccentric bushing.
行星架组件上设置有填充块或填充柱。The planet carrier assembly is provided with a packing block or a packing column.
前侧板与后侧板之间连接有套圈，套圈上按需设置有散热片。A ferrule is connected between the front side plate and the rear side plate, and a heat sink is provided on the ferrule as needed.
本发明的主要优点是能提高变速器的密封性能减小节流损耗，从而进一步提高传动效率。The main advantage of the present invention is that it can improve the sealing performance of the transmission and reduce the throttle loss, thereby further improving the transmission efficiency.
附图说明BRIEF DESCRIPTION
图1为本发明一种实施方式部分立体结构的剖切示意图；1 is a schematic cross-sectional view of a partial three-dimensional structure of an embodiment of the present invention;
图2对本发明的辅助说明示意图。FIG. 2 is a schematic diagram of the auxiliary explanation of the present invention.
具体实施方式detailed description
结合附图，本发明的实施方式如下：With reference to the drawings, the embodiments of the present invention are as follows:
一种恒功率变速器，包括差动轮系，差动轮系包括内齿圈组件、太阳轮组件和连接有行星轮机构的行星架组件，行星轮机构设置有两种行星轮，包括传动齿轮20和密封齿轮19，行星架组件包括侧板，侧板和行星轮机构结合内齿圈组件、太阳轮组件形成高低压两种容积单元，两种容积单元之间连接有节流通道。参见图1，内齿圈组件即内齿圈21，太阳轮组件即太阳轮22及与之连接或固定的输入轴23，行星架组件包括侧板，侧板包括前侧板11、浮动侧板12和后侧板17，前侧板11与后侧板17之间连接有行星轮轴15，浮动侧板12穿置在行星轮轴15上可轴向移动，浮动侧板12与前侧板11之间连接有背压活塞14，当活塞腔内导入高压油液后可压住齿轮端面提高密封性，齿轮即内齿圈21、太阳轮22、传动齿轮20和密封齿轮19；前侧板11与后侧板17之间连接有套圈13，互相通过螺丝固定构成行星架组件，行星轮轴15上也穿置有螺丝以提高连接强度。行星轮机构设置有两种行星轮，包括传动齿轮20和密封齿轮19，传动齿轮20和密封齿轮19使用偏心轴套18套在行星轮轴15上，并通过齿合连接内齿圈21和太阳轮22，后侧板17和浮动侧板12结合内齿圈21、太阳轮22、传动齿轮20、密封齿轮19可构建出高低压两种容积单元，传动齿轮20和密封齿轮19可以分别有多个并且数量相等，互相交错排列，这样构建的高低压容积单元也会增多。两种容积单元之间连接有节流通道，节流通道联通高压容积单元，节流通道上可设置节流阀实现恒功率调速，当差动轮系上套有外壳时， 节流通道适宜通过侧板、轴颈引出到外壳上便于节流阀设置。由于内泄本身也是一种节流过程，故节流通道也可以是高低压容积单元之间的泄露通道，或者在侧板上人为设置细小的通道，这种情况不需要使用阀门来调速，这时本发明类似于具有调速能力的联轴器，适用于工况比较简单的条件下。A constant power transmission includes a differential gear train. The differential gear train includes an internal ring gear assembly, a sun gear assembly, and a planet carrier assembly connected with a planetary gear mechanism. The planetary gear mechanism is provided with two types of planetary gears, including a transmission gear 20 With the sealing gear 19, the planet carrier assembly includes a side plate, the side plate and the planetary gear mechanism combined with the ring gear assembly and the sun gear assembly form two high- and low-pressure volume units, and a throttle channel is connected between the two volume units. Referring to FIG. 1, the inner ring gear assembly is the inner ring gear 21, the sun gear assembly is the sun gear 22 and the input shaft 23 connected or fixed thereto, the planet carrier assembly includes side plates, and the side plates include a front side plate 11 and a floating side plate 12 and the rear side plate 17, the planetary shaft 15 is connected between the front side plate 11 and the rear side plate 17, the floating side plate 12 is axially movable on the planetary shaft 15, the floating side plate 12 and the front side plate 11 There is a back-pressure piston 14 connected between them. When high-pressure oil is introduced into the piston cavity, the end face of the gear can be pressed to improve the sealing performance. The gear is the inner ring gear 21, the sun gear 22, the transmission gear 20 and the sealing gear 19; The ferrules 13 are connected between the rear side plates 17, and are fixed to each other by screws to form a planet carrier assembly. The planet gear shaft 15 is also provided with screws to improve the connection strength. The planetary gear mechanism is provided with two kinds of planetary gears, including a transmission gear 20 and a sealing gear 19. The transmission gear 20 and the sealing gear 19 are sleeved on the planetary gear shaft 15 using an eccentric shaft sleeve 18, and the inner ring gear 21 and the sun gear are connected by a gear 22, the rear side plate 17 and the floating side plate 12 can be combined with the inner ring gear 21, the sun gear 22, the transmission gear 20, and the sealing gear 19 to construct two high and low volume units. The transmission gear 20 and the sealing gear 19 can have multiple And the number is equal, and they are staggered with each other, so the high and low pressure volume units constructed in this way will also increase. A throttle channel is connected between the two volume units. The throttle channel communicates with the high-pressure volume unit. A throttle valve can be set on the throttle channel to achieve constant power speed regulation. When the differential gear train is covered with a housing, the throttle channel is suitable for passing The side plate and the journal are led out to the housing to facilitate the setting of the throttle valve. Since internal leakage itself is also a throttling process, the throttling channel can also be a leakage channel between high and low pressure volume units, or artificially set a small channel on the side plate. In this case, it is not necessary to use a valve to adjust the speed. At this time, the present invention is similar to a coupling with a speed regulation capability, and is applicable to a condition with relatively simple working conditions.
本发明与在先申请的构造基本类似，主要区别是使用了密封齿轮19来代替隔离块的作用，事先了解在先申请中的构造和方案，有助于更好的理解本发明。The present invention is basically similar to the structure of the previous application. The main difference is that the sealing gear 19 is used to replace the role of the isolation block. Knowing the structure and scheme in the previous application in advance helps to better understand the present invention.
在先申请和本发明的传动原理是一样的，这里再说明一下：The transmission principle of the previous application is the same as that of the present invention, and here is a further explanation:
液压传动中有动力单元如油泵以及执行单元如油缸、油马达等，对于执行单元，传动时满足容积最大化原理，这里称之为马达效应，对于动力单元不仅满足马达效应，如果具备条件，还满足泵效应，即驱动动力单元时，如果有多种运动途径产生不同的排量，则会趋向于油液压缩量最小化，泵效应和马达效应的共同目的是相同的，就是使油压最小防止持续上升，所以泵效应其实马达效应的另一种表现，常规的泵类是体现不出泵效应的，因为它们只有一种压缩途径。在先申请中提供了一种排量差的技术方案，侧板和隔离块结合三种齿轮即内齿圈21、太阳轮22和行星轮形成高低压容积单元，当驱动太阳轮22时，行星轮既可以绕本身中心自转，也可以以齿合点为支点做滚动公转，这两种运动方式的力臂是不一样的，显然，作为动力单元时，自转压缩的油量要大于公转，根据泵效应，差动轮系会倾向于公转使行星架组件得到输出力矩。仅仅满足泵效应是不够的，输入端或输出端必须有叠加的合力矩才能有变扭效果，在先申请中，当行星架组件连接负载并顺时针驱动太阳轮22时，高压容积单元只能构建在行星轮的右侧，这时输入力矩、泵力矩和马达力矩方向全部相同，叠加后能使行星架组件能得到方向相同的合力矩输出，当油压不同时合力矩大小也不同，所以能实现变扭，如果高压容积单元构建在行星轮的左侧，即使通过齿轮变位产生泵效应但始终无法有叠加的合力矩输出，这时就是无效的。在先申请的方案已经过实物验证，根据以上所述就容易理解本发明，参见图2，本发明中去 掉了隔离块使用密封齿轮19来替代，如果顺时针驱动太阳轮22，(压油QA-吸油QB)＞0时传动齿轮20满足泵效应且有合力矩，(吸油QD-压油QC)＞0时密封齿轮19满足马达效应，由于马达效应产生的力矩取决于有效排量，而(吸油QD-压油QC)很小，故马达效应因为自干涉产生的反向力矩很小，当总排量关系满足(压油QA-吸油QB)＞(吸油QD-压油QC)时，就能实现传动，这时密封齿轮19的作用与在先申请中的隔离块等效。在齿轮一些参数相同的情况下，使传动齿轮20的齿顶高系数大于密封齿轮19，即能满足总排量关系。In hydraulic transmission, there are power units such as oil pumps and actuators such as oil cylinders and oil motors. For actuators, the principle of volume maximization is met during transmission. This is called the motor effect. For power units, not only the motor effect is satisfied, but if conditions are met, Satisfying the pump effect, that is, when driving the power unit, if there are multiple movement paths that produce different displacements, it will tend to minimize the amount of oil compression. The common purpose of the pump effect and the motor effect is the same, that is, to minimize the oil pressure Prevent the continuous rise, so the pump effect is actually another manifestation of the motor effect. Conventional pumps cannot reflect the pump effect, because they have only one compression path. The first application provides a technical solution for the difference in displacement. The side plate and the isolation block combine three gears: the ring gear 21, the sun gear 22 and the planetary gear to form a high and low pressure volume unit. When the sun gear 22 is driven, the planet The wheel can rotate around its own center, or it can make rolling orbits with the tooth point as the fulcrum. The force arms of these two motion modes are different. Obviously, when used as a power unit, the amount of oil compressed by rotation is greater than the revolution, according to the pump As a result, the differential gear train will tend to revolve and the output torque of the planet carrier assembly will be obtained. It is not enough to satisfy the pump effect. The input end or output end must have a superimposed combined torque to have a torsion effect. In the first application, when the planet carrier assembly is connected to the load and drives the sun wheel 22 clockwise, the high-pressure volume unit can only It is built on the right side of the planetary gear. At this time, the input torque, pump torque and motor torque are all in the same direction. After superposition, the planetary carrier assembly can get the same direction of the combined torque output. When the oil pressure is different, the combined torque is also different, so It can achieve torsion. If the high-pressure volume unit is built on the left side of the planetary gear, even if the pump effect is generated by the gear displacement, there is always no superimposed total torque output, which is invalid. The previously applied solution has been physically verified, and it is easy to understand the present invention based on the above. Referring to FIG. 2, the isolation block is removed in the present invention and the sealing gear 19 is used instead. If the sun gear 22 is driven clockwise, (pressure oil QA -Oil absorption QB)>0, the transmission gear 20 meets the pump effect and has a combined torque, (oil absorption QD-pressure oil QC)>0, the sealing gear 19 meets the motor effect, the torque generated by the motor effect depends on the effective displacement, and ( The oil absorption QD-pressure oil QC) is very small, so the reverse torque generated by the motor effect due to self-interference is small. When the total displacement relationship satisfies (pressure oil QA-suction oil QB)> (oil absorption QD-pressure oil QC), then Transmission can be achieved, and the function of the sealing gear 19 is equivalent to the isolation block in the previous application. In the case where some parameters of the gears are the same, making the addendum height coefficient of the transmission gear 20 greater than that of the sealing gear 19 can satisfy the relationship of the total displacement.
在上述方案的基础上，本发明有以下优选或可选方案：Based on the above solutions, the present invention has the following preferred or optional solutions:
传动齿轮20和密封齿轮19的齿顶高系数不同。这是调节总排量关系较为理想的手段，增大齿轮的压力角可以增大差值。如果齿轮通过变位等手段，在标准中心距下调整排量差使其趋向于零，这时将传动齿轮20的中心距增大，将密封齿轮19的中心距减小后会有(压油QA-吸油QB)＞0、(压油QC-吸油QD)＞0，这样也能满足泵效应，但这种做法需要增大齿隙，并且齿轮也容易磨损。The drive gear 20 and the seal gear 19 have different addendum coefficients. This is an ideal way to adjust the total displacement relationship. Increasing the pressure angle of the gear can increase the difference. If the gear is adjusted by displacement and other means, the displacement difference is adjusted to zero at the standard center distance, then the center distance of the transmission gear 20 is increased, and the center distance of the seal gear 19 is reduced (pressure oil QA) -Oil absorption QB)>0, (pressure oil QC-oil absorption QD)>0, this can also meet the pump effect, but this method needs to increase the backlash, and the gear is also easy to wear.
侧板包括前侧板11、浮动侧板12和后侧板17，前侧板11与后侧板17之间连接有行星轮轴15，浮动侧板12穿置在行星轮轴15上。浮动侧板12主要起端面补偿的作用，在高压领域已有广泛应用能显著提高容积效率，由于密封齿轮19有齿合密封和端面补偿，其密封效果会优于隔离块的方案。本发明组装后通过磨合或研磨能消除端面和齿合间隙，如果工作时在油液中加入金属自修复剂，可以进一步消除细小间隙并强化接触特性，这也是本发明使用密封齿轮19替代隔离块的重要目的。浮动侧板12可以设置多块，配合多副齿轮组构成串联结构，可以增大传动能力。The side plate includes a front side plate 11, a floating side plate 12 and a rear side plate 17. A planetary shaft 15 is connected between the front side plate 11 and the rear side plate 17. The floating side plate 12 is inserted on the planetary shaft 15. The floating side plate 12 mainly plays a role of end face compensation, and has been widely used in the field of high pressure to significantly improve the volumetric efficiency. Since the sealing gear 19 has a toothed seal and end face compensation, its sealing effect will be superior to the isolation block solution. After the assembly of the present invention, the end face and the tooth gap can be eliminated by running-in or grinding. If metal self-healing agent is added to the oil during work, it can further eliminate the small gap and strengthen the contact characteristics. This is also the use of the sealing gear 19 instead of the isolation block in the present invention. Important purpose. A plurality of floating side plates 12 can be provided, and multiple gear sets can be combined to form a series structure, which can increase the transmission capacity.
前侧板11与后侧板17之间连接有行星轮轴15，行星轮通过偏心轴套18连接行星轮轴15。参见图2，本发明中的齿轮受到油压后，在平面上会产生6个理论接触点a、b、c、d、e、f,但由于实际存在制造或磨损间隙等，这6个点在刚性条件下最多只能有5个接触，即便是同种行星轮当有多个时，每个行星轮的3个点都无法保 证同时接触，虽然同种行星轮可以通过磨合改善，但因为接触点的相对位置不同，不同的行星轮磨合也无效。如果使e点不接触相当于密封齿轮19为实心结构，但这种情况下齿合部位受力巨大，为了确保密封效果并支撑行星轮的侧向压力，实际中达到6点接触是有必要的，当行星轮通过偏心轴套18连接行星轮轴15后就能具有了自动调节位置的功能，这个偏心量一般只需很小。工程上，还可以使行星轮轴15悬浮的方法来解决这个问题，即行星轮轴15的两端通过油缸连接侧板，但油缸体积大缺点很多。A planetary shaft 15 is connected between the front side plate 11 and the rear side plate 17, and the planetary gear is connected to the planetary shaft 15 through an eccentric bush 18. Referring to FIG. 2, after the gear of the present invention is subjected to oil pressure, there will be 6 theoretical contact points a, b, c, d, e, f on the plane, but due to actual manufacturing or wear gaps, these 6 points Under rigid conditions, there can only be at most 5 contacts. Even if there are multiple planetary gears of the same type, the three points of each planetary gear cannot guarantee simultaneous contact. Although the same type of planetary gears can be improved by running in, but because The relative positions of the contact points are different, and the running-in of different planet wheels is also invalid. If the e-point is not in contact, it is equivalent to the solid structure of the sealing gear 19, but in this case, the tooth-engaging portion is subjected to a large force. In order to ensure the sealing effect and support the lateral pressure of the planetary gear, it is necessary to achieve 6-point contact in practice. After the planetary gear is connected to the planetary gear shaft 15 through the eccentric bushing 18, it can automatically adjust the position. This eccentricity generally only needs to be small. In engineering, the planetary gear shaft 15 can also be suspended to solve this problem, that is, the two ends of the planetary gear shaft 15 are connected to the side plates through the oil cylinder, but the oil cylinder has many disadvantages.
行星架组件上设置有填充块或填充柱16。参见图1，填充块或填充柱16连接在侧板之间，目的是填充两种行星轮之间的空隙，减少油液压缩损耗和发热。侧板上可设置离心叶片，并在填充块或填充柱16内设置通道，导入低压冷却油液后可用于散热，或者将冷却油直接充入低压容积单元替换部分热油。The planet carrier assembly is provided with a packing block or packing column 16. Referring to FIG. 1, a packing block or packing column 16 is connected between the side plates, and the purpose is to fill the gap between the two planet wheels to reduce oil compression loss and heat generation. A centrifugal blade can be arranged on the side plate, and a channel is provided in the packing block or packing column 16. After introducing low-pressure cooling oil, it can be used for heat dissipation, or the cooling oil can be directly charged into the low-pressure volume unit to replace part of the hot oil.
前侧板11与后侧板17之间连接有套圈13，套圈13上按需设置有散热片。套圈13能使行星架组件起到加强连接的作用。由于本发明的内部充满有利于散热金属部件，应用于中小功率时，可通过本身来散热，如泡入油池，或者进一步的在套圈13上设置散热片，以风冷方式来散热。A ferrule 13 is connected between the front side plate 11 and the rear side plate 17, and a heat sink is provided on the ferrule 13 as needed. The ferrule 13 can make the planet carrier assembly play a role in strengthening the connection. Since the interior of the present invention is filled with metal components that are beneficial to heat dissipation, when applied to small and medium powers, the heat can be dissipated by itself, such as immersed in the oil pool, or further provided with fins on the ferrule 13 to dissipate heat by air cooling.
对比在先申请的方案，本发明的主要优点是能提高变速器的密封性能减小节流损耗，从而进一步提高传动效率。Compared with the previously applied solution, the main advantage of the present invention is that it can improve the sealing performance of the transmission and reduce the throttle loss, thereby further improving the transmission efficiency.

Claims (6)

  1. 一种恒功率变速器，包括差动轮系，差动轮系包括内齿圈组件、太阳轮组件和连接有行星轮机构的行星架组件，其特征在于：行星轮机构设置有两种行星轮，包括传动齿轮和密封齿轮，行星架组件包括侧板，侧板和行星轮机构结合内齿圈组件、太阳轮组件形成高低压两种容积单元，两种容积单元之间连接有节流通道。A constant power transmission includes a differential gear train. The differential gear train includes an internal ring gear assembly, a sun gear assembly and a planet carrier assembly connected to a planetary gear mechanism. The characteristic is that the planetary gear mechanism is provided with two types of planetary gears. Including the transmission gear and the sealing gear, the planet carrier assembly includes a side plate. The side plate and the planetary gear mechanism combine with the ring gear assembly and the sun gear assembly to form two high- and low-pressure volume units, and a throttle channel is connected between the two volume units.
  2. 根据权利要求1所述的一种恒功率变速器，其特征在于：传动齿轮和密封齿轮的齿顶高系数不同。A constant power transmission according to claim 1, wherein the drive gear and the sealing gear have different addendum height coefficients.
  3. 根据权利要求1所述的一种恒功率变速器，其特征在于：侧板包括前侧板、浮动侧板和后侧板，前侧板与后侧板之间连接有行星轮轴，浮动侧板穿置在行星轮轴上。A constant power transmission according to claim 1, wherein the side plate comprises a front side plate, a floating side plate and a rear side plate, a planetary axle is connected between the front side plate and the rear side plate, and the floating side plate passes through Placed on the planetary shaft.
  4. 根据权利要求1或3所述的一种恒功率变速器，其特征在于：前侧板与后侧板之间连接有行星轮轴，行星轮通过偏心轴套连接行星轮轴。A constant power transmission according to claim 1 or 3, wherein a planetary shaft is connected between the front side plate and the rear side plate, and the planetary gear is connected to the planetary shaft through an eccentric bushing.
  5. 根据权利要求1所述的一种恒功率变速器，其特征在于：行星架组件上设置有填充块或填充柱。The constant power transmission according to claim 1, wherein the planet carrier assembly is provided with a packing block or a packing column.
  6. 根据权利要求3所述的一种恒功率变速器，其特征在于：前侧板与后侧板之间连接有套圈，套圈上按需设置有散热片。A constant power transmission according to claim 3, characterized in that a ferrule is connected between the front side plate and the rear side plate, and fins are provided on the ferrule as needed.
PCT/CN2019/120542 2018-12-18 2019-11-25 Constant power transmission WO2020125329A1 (en)

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CN201811546688.8A CN109372970A (en) 2018-12-18 2018-12-18 A kind of invariable power speed changer
CN201822123763.1U CN209164522U (en) 2018-12-18 2018-12-18 A kind of invariable power speed changer
CN201822123763.1 2018-12-18
CN201811546688.8 2018-12-18

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2460098A1 (en) * 1974-12-19 1976-06-24 Gewerk Eisenhuette Westfalia ELECTRIC CHAIN DRIVE, ESPECIALLY FOR PLANING MACHINES
DE3542184A1 (en) * 1985-11-29 1987-06-04 Konrad Heinrich Pro Langenbeck Self-locking planetary differential
CN1266152A (en) * 1999-09-15 2000-09-13 刘志国 Planetary liquid-damping stepless speed variator
CN103339409A (en) * 2010-12-23 2013-10-02 玛格纳动力传动***股份及两合公司 Transmission unit
JP2015086951A (en) * 2013-10-31 2015-05-07 株式会社ジェイテクト Gear mechanism
CN108105359A (en) * 2018-02-05 2018-06-01 潘国陶 A kind of buncher
CN109372970A (en) * 2018-12-18 2019-02-22 潘国陶 A kind of invariable power speed changer
CN209164522U (en) * 2018-12-18 2019-07-26 潘国陶 A kind of invariable power speed changer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2460098A1 (en) * 1974-12-19 1976-06-24 Gewerk Eisenhuette Westfalia ELECTRIC CHAIN DRIVE, ESPECIALLY FOR PLANING MACHINES
DE3542184A1 (en) * 1985-11-29 1987-06-04 Konrad Heinrich Pro Langenbeck Self-locking planetary differential
CN1266152A (en) * 1999-09-15 2000-09-13 刘志国 Planetary liquid-damping stepless speed variator
CN103339409A (en) * 2010-12-23 2013-10-02 玛格纳动力传动***股份及两合公司 Transmission unit
JP2015086951A (en) * 2013-10-31 2015-05-07 株式会社ジェイテクト Gear mechanism
CN108105359A (en) * 2018-02-05 2018-06-01 潘国陶 A kind of buncher
CN109372970A (en) * 2018-12-18 2019-02-22 潘国陶 A kind of invariable power speed changer
CN209164522U (en) * 2018-12-18 2019-07-26 潘国陶 A kind of invariable power speed changer

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