WO2014121719A1 - 张力调节装置 - Google Patents

张力调节装置 Download PDF

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Publication number
WO2014121719A1
WO2014121719A1 PCT/CN2014/071653 CN2014071653W WO2014121719A1 WO 2014121719 A1 WO2014121719 A1 WO 2014121719A1 CN 2014071653 W CN2014071653 W CN 2014071653W WO 2014121719 A1 WO2014121719 A1 WO 2014121719A1
Authority
WO
WIPO (PCT)
Prior art keywords
swing arm
tension adjusting
adjusting device
sealing cover
assembly
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2014/071653
Other languages
English (en)
French (fr)
Inventor
郝闽椿
傅红良
周华斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GATES UNITTA POWER TRANSMISSION (SHANGHAI) Ltd
Original Assignee
GATES UNITTA POWER TRANSMISSION (SHANGHAI) Ltd
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.)
Filing date
Publication date
Application filed by GATES UNITTA POWER TRANSMISSION (SHANGHAI) Ltd filed Critical GATES UNITTA POWER TRANSMISSION (SHANGHAI) Ltd
Priority to US14/766,100 priority Critical patent/US20150354675A1/en
Priority to EP14749346.4A priority patent/EP2955415B1/en
Priority to ES14749346.4T priority patent/ES2687472T3/es
Priority to KR1020157023783A priority patent/KR101751156B1/ko
Priority to BR112015019018A priority patent/BR112015019018A2/pt
Priority to JP2015556387A priority patent/JP6130930B2/ja
Priority to MX2015010116A priority patent/MX368594B/es
Priority to CA2900128A priority patent/CA2900128C/en
Priority to RU2015137803A priority patent/RU2609250C1/ru
Priority to AU2014214390A priority patent/AU2014214390B2/en
Publication of WO2014121719A1 publication Critical patent/WO2014121719A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H7/00Gearings for conveying rotary motion by endless flexible members
    • F16H7/08Means for varying tension of belts, ropes or chains 
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H7/00Gearings for conveying rotary motion by endless flexible members
    • F16H7/08Means for varying tension of belts, ropes or chains 
    • F16H7/10Means for varying tension of belts, ropes or chains  by adjusting the axis of a pulley
    • F16H7/12Means for varying tension of belts, ropes or chains  by adjusting the axis of a pulley of an idle pulley
    • F16H7/1254Means for varying tension of belts, ropes or chains  by adjusting the axis of a pulley of an idle pulley without vibration damping means
    • F16H7/1281Means for varying tension of belts, ropes or chains  by adjusting the axis of a pulley of an idle pulley without vibration damping means where the axis of the pulley moves along a substantially circular path
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05FSTATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
    • H05F3/00Carrying-off electrostatic charges
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H7/00Gearings for conveying rotary motion by endless flexible members
    • F16H7/08Means for varying tension of belts, ropes or chains 
    • F16H2007/0802Actuators for final output members
    • F16H2007/081Torsion springs
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H7/00Gearings for conveying rotary motion by endless flexible members
    • F16H7/08Means for varying tension of belts, ropes or chains 
    • F16H2007/0889Path of movement of the finally actuated member
    • F16H2007/0893Circular path
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H7/00Gearings for conveying rotary motion by endless flexible members
    • F16H7/08Means for varying tension of belts, ropes or chains 
    • F16H7/10Means for varying tension of belts, ropes or chains  by adjusting the axis of a pulley
    • F16H7/12Means for varying tension of belts, ropes or chains  by adjusting the axis of a pulley of an idle pulley

Definitions

  • the present invention relates to a tension adjusting device having an electrostatic discharge path for releasing static electricity generated by a tension adjusting device during operation.
  • the tension adjusting device is widely used in transmission equipment, and the transmission member such as the belt or the chain of the transmission device is usually pressed against the tensioning pulley of the tension adjusting device, and the tensioning pulley tensions the operating transmission member during the operation of the transmission device.
  • the tension adjustment device typically includes a swing arm and a tensioning assembly.
  • the swing arm is rotatably fixed to the fixed base by a fixing assembly, which may be, for example, an engine block or a mounting bracket.
  • a tension adjusting device for a belt for driving an auxiliary machine is disclosed in the Chinese patent CN100441912C, which can maintain the sealing property as a swing center of a pulley arm supporting the tensioning wheel well for a long period of time.
  • the tension adjusting device for the auxiliary machine driving belt is provided with a pulley arm swingable relative to the fixed support shaft, and a sliding bearing is further disposed between the pulley arm and the fixed support shaft.
  • the above patents primarily address the problem of sealing in tension adjusting devices.
  • the swing arm is frequently swung relative to the fixed base, in which case it is easy to generate static electricity in the tension adjusting device.
  • the plain bearing is usually a plastic material having self-lubricating properties, which is insulative, and cannot immediately derive the electrostatic charge of the pulley arm in the tension adjusting device, resulting in accumulation of electrostatic charge, thereby generating an electric spark.
  • the sliding bearing is made of a conductive material, such as copper.
  • a plastic material with self-lubricating properties is provided on the surface of the copper material, so that the tension adjusting device cannot be immediately exported.
  • the electrostatic charge of the middle pulley arm causes the electrostatic charge to accumulate, which in turn generates an electric spark.
  • the resulting electric spark may cause an accident such as a fire.
  • the object of the present invention is to overcome the above drawbacks and to provide a tension adjusting device capable of It is sufficient to discharge static electricity generated during operation by forming an electrostatic discharge path inside the tension adjusting device to prevent an accident from occurring.
  • Another object of the present invention is to provide an electrostatic discharge member for forming an electrostatic discharge path that can be used to dry static electricity while maintaining less friction with other components in the tension adjusting device to reduce the normality of the tension adjusting device.
  • the effect of the operation and the extension of its service life make it more suitable for tension adjustment devices that are difficult to disassemble or that cannot be disassembled even during their service life.
  • the electrostatic dry discharge member By the electrostatic dry discharge member, the cost of maintenance and replacement can be reduced, and the operation efficiency of the tension adjusting device can be improved.
  • a tension adjusting device for a transmission device comprising:
  • tensioning assembly rotatably secured to the swing arm
  • the swing arm has a swing arm shaft, a hole is formed in the swing arm shaft, the fixing component is assembled in the hole, and a bearing assembly is disposed between the fixing component and the hole, the fixing a first sealing cover is disposed at one end of the assembly, wherein an electrostatic discharge member is disposed between the first sealing cover and the swing arm shaft, and the electrostatic discharge member and the first sealing cover and the The swing arm shaft is in contact to form an electrostatic discharge path.
  • the components on the electrostatic dry discharge path are made of a conductive material, that is, the swing arm shaft, the electrostatic dry discharge member, the first seal cover, the fixed shaft, and the bolt are all made of a conductive material.
  • an electrostatic dry discharge path is formed in the tension adjusting device to dry-discharge the static electricity generated during the operation of the tension regulating device to ensure the safety of its operation.
  • the electrostatic dry-release member may be in point, line or partial contact with the first seal cover and the swing arm shaft, respectively.
  • the electrostatic discharge member is in resilient contact with the first sealing cover and the swing arm shaft.
  • the electrostatic dry discharge member may be elastic, and the elastic property enables the electrostatic discharge member to overcome axial friction.
  • the electrostatic dry-release member is a wave spring, a coil spring or a butterfly spring. A wave spring is a preferred configuration and the electrostatic discharge member can have any other suitable configuration similar.
  • the wave spring has a crest portion and a trough portion, wherein the crest portion and the trough portion are in contact with the first seal cap and the swing arm shaft, respectively.
  • the wave spring is made of a conductive material, for example, may be made of a conductive metal.
  • the electrostatic dry-release member may comprise a plurality of wave springs arranged in an overlapping manner.
  • the wave spring has at least three contact points with the first sealing cover, and/or the wave spring has at least three contact points with the swing arm shaft. Such a structure can maintain a good balance between ensuring the release of static electricity and proper wear.
  • the first sealing cover forms a separate structure with the swing arm shaft. This can avoid the wear of the first sealing cover and prolong the service life of the tension adjusting device.
  • the bearing assembly is spaced apart from the electrostatic discharge member to reduce wear of the electrostatic dry-out member.
  • a second sealing cover is disposed at the other end of the fixing assembly, the bearing assembly including a first sliding bearing adjacent to the first sealing cover and a first sealing bearing adjacent to the second sealing cover A two-slide bearing, wherein the end of the second sliding bearing adjacent to the second sealing cover has a radially extending bearing flange.
  • a fixed shaft boss portion is formed at both ends of the fixed shaft, and the first sealing cover and the second sealing cover are respectively sealingly sleeved on the two fixed shafts The fixed shaft boss portion at the end.
  • a tension adjustment assembly is further included, one end of the tension adjustment assembly being rotatably secured to the swing arm and the other end rotatably secured to the fixed base.
  • the fixing assembly has a fixed shaft, the fixed shaft is integrally provided with a fastener, the fixed shaft passes through the first sealing cover, and the fastener is used
  • the swing arm is fixed, wherein the fastener is a bolt or a rivet.
  • the fixing assembly has a fixed shaft and a fastener, the fastener fixing the swing arm through a hole in the first sealing cover and the fixed shaft, wherein
  • the fasteners are bolts or rivets.
  • the bearing assembly is electrically insulated.
  • the electrostatic dry-release member is disposed around the fixed shaft, or the electrostatic dry-release member includes a plurality of discrete components disposed about the fixed shaft.
  • FIG. 1 is a plan view of a tension adjusting device for a transmission device according to the present invention
  • FIG. 2 is a bottom view of a tension adjusting device for a transmission device according to the present invention
  • FIG. 3 is an assembled transmission for use according to the present invention. a perspective view of the tensioning device of the device;
  • Figure 4 is an exploded perspective view of a tension adjusting device for a transmission device in accordance with the present invention.
  • Figure 5 is a partial cross-sectional view taken along line A-A of Figure 1. detailed description
  • FIG. 1 there are shown top, bottom and perspective views, respectively, of a tensioning device 100 for a transmission device in accordance with the present invention.
  • the tension adjusting device 100 Mounted on a fixed base (not shown), which may be, for example, an engine block or a mounting bracket.
  • the tension adjusting device 100 includes two portions, a swing arm 10 and a tensioning assembly 20.
  • the swing arm 10 is rotatably fixed by a fixing assembly 60, for example, the swing arm 10 is rotatably fixed to the fixed base by a fixing assembly 60.
  • the tensioning assembly 20 is rotatably secured to the swing arm 10.
  • the tension adjustment device 100 further includes a tension adjustment assembly 30.
  • One end of the tension adjusting assembly 30 is rotatably fixed to the swing arm 10, and the other end is rotatably fixed to the fixed base.
  • the tension adjustment assembly 30 can employ a conventional structure in the art, and for example, a well-known hydraulic automatic tensioner or a pneumatic automatic tensioner can be employed. The specific structure thereof will not be described in detail herein.
  • the swing arm 10 is fixed to the fixed base by the fixing assembly 60 such that the swing arm 10 can be rotated about the axis of the fixed assembly 60, so that the swing arm 10 can swing freely relative to the fixed base.
  • the tensioning assembly 20 has a tensioning pulley 21 that is fixed to the swing arm 10 by bolts 22 so that the tensioning pulley 21 can rotate about the axis of the bolt 22.
  • the transmission member of the transmission device is kept in constant contact with the tensioning pulley 21, so that the tensioning pulley 21 tensions the transmission member of the transmission device. The function of tensioning during the operation of the transmission.
  • the swing arm 10 has a swing arm shaft 11. As can be seen from the exploded view of Fig. 4, the swing arm shaft 11 projects outward from the opposite sides of the swing arm 10. A through hole 12 is formed in the swing arm shaft 11. The fixing assembly 60 passes through the hole 12 to fix the swing arm 10 to the fixed base.
  • the fixing assembly 60 is fitted in the bore 12, and a bearing assembly 62 is disposed between the stationary assembly 60 and the bore 12.
  • the fixing assembly 60 has a fixed shaft 61 that is fitted in the bore 12 by a bearing assembly 62.
  • the fixed shaft 61 is fitted in the bore 12, and the fixed shaft 61 and the bore 12 are disposed.
  • a first sealing cover 63 and a second sealing cover 64 are respectively disposed at both ends of the fixing assembly 60.
  • the first sealing cover 63 and the second sealing cover 64 are respectively located on the fixed shaft 61.
  • the bearing assembly is made of an electrically insulating material having self-lubricating properties, or an electrically insulating material having self-lubricating properties is provided on the surface of the bearing assembly.
  • the electrically insulating material makes the bearing assembly electrically insulated.
  • the swing arm shaft 11 is in contact with the first seal cover 63, the swing arm shaft 11 is frequently moved relative to the first seal cover 63 during operation of the tension adjusting device 100, resulting in the swing arm shaft 11 and the first
  • the sealing cover 63 wears, in particular the wear of the first sealing cover 63. Therefore, in a preferred manner, the swing arm shaft 11 and the first seal cover 63 are formed in a separate structure, that is, the swing arm shaft 11 is not in contact with the first seal cover 63, so that the wear of the first seal cover 63 can be avoided.
  • the service life of the tension adjusting device is prolonged, and at the same time, the electrostatic charge cannot be conducted from the swing arm shaft 11 to the first sealing cover 63, causing electrostatic charge accumulation.
  • the two sealing caps are not in contact with the swing arm shaft 11.
  • the bearing assembly 62 includes a first sliding bearing 621 proximate the first sealing cover 63 and a second sliding bearing 622 proximate the second sealing cover 64.
  • the second seal cover 64 and the second slide bearing 622 are closer to the fixed base than the first seal cover 63 and the first slide bearing 621 from the fixed base.
  • the end of the second sliding bearing 622 near the second sealing cover 64 has a bearing flange 623 that axially isolates the second sealing cover 64 from the swing arm shaft 11, or is disposed axially in the first Between the two sealing covers 64 and the swing arm shaft 11.
  • the securing assembly 60 also has fasteners (not shown) that secure the swing arm 10 through the apertures in the first sealing cover 63 and the stationary shaft 61.
  • the fasteners secure the swing arm 10 to the fixed base through the holes in the first sealing cover 63, the second sealing cover 64 and the fixed shaft 61.
  • the fastener can be a bolt, a rivet or other fastener known in the art.
  • the fixed shaft 61 of the fixing assembly 60 is integrally provided with a fastener, the fixed shaft 61 passes through the first sealing cover 63, and the fastener is used to swing the swing arm 10 It is rotatably fixed to the fixed base.
  • the fastener can be a bolt, a rivet or other fastener known in the art.
  • an electrostatic dry discharge member 65 is provided between the first seal cover 63 and the swing arm shaft 11, and the electrostatic dry discharge member 65 is respectively coupled to the first seal cover 63 and the swing arm shaft 11 makes contact to form an electrostatic discharge path.
  • the electrostatic dry discharge member 65 since the electrostatic dry discharge member 65 is provided, it is fixed enough to reach the second sealing cover 63 via the swing arm shaft 11 and the static dry discharge member 65, and is further transmitted to the fastener through the fixed shaft 61. , then pass to the fixed base (engine block or mounting bracket) to dry the static electricity.
  • the components on the electrostatic discharge path should be made of a conductive material, that is, the swing arm shaft 11, the electrostatic dry discharge member 65, the first seal cover 63, the fixed shaft 61, and the fastener. Both are made of a conductive material.
  • the conductive material from which these components are made can be made of materials conventional in the art.
  • the bearing assembly is spaced apart from the electrostatic dry-release member, that is, the bearing assembly is not in contact with the electrostatic dry-release member.
  • the electrostatic dry discharge member 65 is only in contact with the first seal cover 63 and the swing arm shaft 11.
  • the contact area of the electrostatic dry discharge member 65 with the first seal cover 63 and the swing arm shaft 11 can be reduced.
  • the electrostatic dry-release members 65 are in point, line or partial contact with the first seal cover 63 and the swing arm shaft 11, respectively.
  • the electrostatic discharge member 65 may have any suitable configuration as long as it can function to dry static electricity during the operation of the tension adjusting device 100.
  • the electrostatic dry-release member 65 may be disposed around the fixed shaft 61, or in another embodiment, the electrostatic dry-release member 65 may include a plurality of components disposed around the fixed shaft 61, and the dispersed components may be For example, a gasket or the like.
  • the electrostatic dry discharge members 65 are in elastic contact with the first seal cover 63 and the swing arm shaft 11, respectively.
  • the electrostatic discharge member 65 is resiliently resiliently and electrically disposed between the sealing cover and the stationary shaft. The advantage of this arrangement is as follows. The resilient electrostatic discharge member can maintain a reliable electrical connection between the three components with only a small axial force.
  • the electrostatic dry discharge member 65 may be a wave spring.
  • the static dry discharge member 65 may also be a coil spring or a butterfly spring.
  • the wave spring is sufficiently resilient to remain in contact with the first seal cover 63 and the swing arm shaft 11.
  • the electrostatic dry-release member may include a plurality of wave springs which may be disposed in an overlapping manner to increase the axial force.
  • the wave spring can be made of any suitable electrically conductive material, for example, made of a conductive metal to ensure that the wave spring has sufficient elasticity while ensuring dry electrostatic discharge.
  • the wave spring has a crest portion and a trough portion, and in actual operation, the crest portion and the trough portion are in point contact, line contact or partial surface contact with the first seal cover 63 and the swing arm shaft 11, respectively.
  • point contact, line contact or partial surface contact may be selected.
  • the wave spring may have a plurality of peak portions and a plurality of valley portions, such that the wave spring may have a plurality of contact portions with the first seal cover 63 and the swing arm shaft 11, respectively.
  • the contact sites can be independently selected for point contact, line contact or partial face contact.
  • the number of contact portions does not need to be the same as the number of peak portions or trough portions, that is, a part of the peak portion or the trough portion may not be in contact with the first sealing cover 63 and the swing arm shaft 11 so that The wave spring can have better adaptability between the first seal cover 63 and the swing arm shaft 11.
  • the wave spring has at least three contact points with the first sealing cover 63, and/or the wave spring and the swing arm shaft 11 have at least three contact points. This maintains a good balance between ensuring static discharge and proper wear.
  • the number of contact locations can also be any suitable number.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Elimination Of Static Electricity (AREA)

Abstract

一种用于传动设备的张力调节装置(100),所述张力调节装置(100)包括:摆臂(10),所述摆臂(10)通过固定组件(60)可旋转地固定;和张紧组件(20),所述张紧组件(20)可旋转地固定到所述摆臂(10)上。其中,所述摆臂(10)具有摆臂轴(11),所述摆臂轴(11)中形成有孔(12),所述固定组件(60)装配在所述孔(12)中,所述固定组件(60)和所述孔(12)之间设置有轴承组件(62),所述固定组件(60)的一个端部处设置有第一密封盖(63),其中在所述第一密封盖(63)和所述摆臂轴(11)之间设置有静电释放构件(65),所述静电释放构件(65)分别与所述第一密封盖(63)和所述摆臂轴(11)进行接触,形成静电释放路径。通过这样的结构,能够消除张力调节装置(100)在运行过程中产生的静电。

Description

力^ 技术领域
本发明涉及一种张力调节装置, 其具有静电释放路径以释放张力 调节装置在操作过程中产生的静电。 背景技术
张力调节装置广泛用于传动设备, 传动设备的带或链条等传动部 件通常压靠在张力调节装置的张紧轮上, 由该张紧轮在传动设备运行 期间张紧运转中的传动部件。张力调节装置通常包括摆臂和张紧组件。 其中摆臂通过固定组件可旋转地固定到固定基座上, 该固定基座可以 是例如发动机缸体或安装支架。
中国专利 CN100441912C中公开了一种辅机驱动用带的张力调节 装置, 其可以长期良好地保持作为支承拉紧轮的滑轮臂的摆动中心的 密封性。 该辅机驱动用带的张力调节装置设置有可相对于固定支轴摆 动的滑轮臂, 滑轮臂与固定支轴之间还设置有滑动轴承。
上述专利主要解决张力调节装置中密封的问题。 然而, 在实际操 作中, 由于张紧轮需要频繁地张紧传动设备的传动部件, 使得摆臂频 繁地相对于固定基座摆动, 在这种情况下, 容易在张力调节装置中产 生静电。 实际中, 所述滑动轴承通常为具有自润滑特性的塑料材料, 其具有绝缘性, 无法立即导出张力调节装置中滑轮臂的静电电荷, 导 致静电电荷积累, 进而产生电火花。 另外, 在部分产品中, 滑动轴承 采用导电材料制成, 例如铜材, 为了保证滑动轴承的润滑性, 会在铜 材表面设置具有自润滑特性的塑料材料, 这样也会无法立即导出张力 调节装置中滑轮臂的静电电荷,导致静电电荷积累,进而产生电火花。 所产生的电火花, 可能导致诸如起火等事故。 发明内容
本发明的目的在于克服上述缺陷, 提供一种张力调节装置, 其能 够通过在张力调节装置内部形成静电释放路径, 来释放在操作过程中 产生的静电, 防止事故的发生。
本发明的另一个目的在于提供用于形成静电释放路径的静电释放 构件, 其能够用来幹放静电, 同时与张力调节装置中其它部件保持较 小的摩擦, 以减小对张力调节装置的正常操作的影响, 并且延长其使 用寿命, 从而能够更加适用于难以拆卸或者甚至在使用寿命期间无法 拆卸的张力调节装置。 通过该静电幹放构件, 可以减少维护和更换的 成本, 提高张力调节装置的运转效率。
本发明的上述目的是通过一种用于传动设备的张力调节装置来实 现的, 所述张力调节装置包括:
摆臂, 所述摆臂通过固定组件可旋转地固定; 和
张紧组件, 所述张紧组件可旋转地固定到所述摆臂上;
其中, 所述摆臂具有摆臂轴, 所述摆臂轴中形成有孔, 所述固定 组件装配在所述孔中, 所述固定组件和所述孔之间设置有轴承组件, 所述固定组件的一个端部处设置有第一密封盖, 其中在所述第一密封 盖和所述摆臂轴之间设置有静电释放构件, 所述静电释放构件分别与 所述第一密封盖和所述摆臂轴进行接触, 形成静电释放路径。 在实际 操作中, 静电幹放路径上的各部件由导电材料制成, 也就是, 摆臂轴、 静电幹放构件、 第一密封盖、 固定轴和螺栓均由导电材料制成。
通过上述结构, 在张力调节装置中形成静电幹放路径, 以幹放张 力调节装置在运行过程中产生的静电, 保证其操作安全。
在一个实施例中, 所述静电幹放构件可以分别与所述第一密封盖 和所述摆臂轴进行点接触、 线接触或部分面接触。 通过这样的结构, 由于静电幹放构件与第一密封盖和摆臂轴之间的接触面积较小, 使得 它们之间的摩擦较小, 不会妨碍张力调节装置的正常操作, 同时也减 小了磨损, 延长了静电释放构件的使用寿命。
在一个实施例中, 所述静电释放构件与第一密封盖和摆臂轴进行 弹性接触, 例如所述静电幹放构件可以是弹性的, 弹性的特性使得静 电释放构件能够克服轴向的摩擦。 在一个实施例中, 所述静电幹放构件为波形弹簧、 螺旋弹簧或蝶 形弹簧。 波形弹簧是优选的构造, 静电释放构件可以具有类似的任何 其它合适的构造。
在一个实施例中, 所述波形弹簧具有波峰部分和波谷部分, 其中 所述波峰部分和所述波谷部分分别与所述第一密封盖和所述摆臂轴进 行接触。
在一个实施例中, 所述波形弹簧由导电材料制成, 例如可以由导 电金属制成。
在一个实施例中, 所述静电幹放构件可以包括多片重叠设置的波 形弹簧。
在一个实施例中, 所述波形弹簧与所述第一密封盖具有至少三个 接触部位, 和 /或所述波形弹簧与所述摆臂轴具有至少三个接触部位。 这样的结构可以在确保释放静电与适当的磨损之间保持较好的平衡。
在一个实施例中,所述第一密封盖与所述摆臂轴形成分离式结构。 这样可以避免第一密封盖的磨损, 延长张力调节装置的使用寿命。
在一个实施例中,所述轴承组件与所述静电释放构件接触间隔开, 以减小静电幹放构件的磨损。
在一个实施例中, 所述固定组件的另一个端部处设置有第二密封 盖, 所述轴承组件包括靠近所述第一密封盖的第一滑动轴承和靠近所 述第二密封盖的第二滑动轴承, 其中所述第二滑动轴承的靠近所述第 二密封盖的端部处具有沿径向延伸的轴承凸缘。
在一个实施例中, 所述固定轴的两个端部处均形成有固定轴凸台 部, 所述第一密封盖和所述第二密封盖分别密封地套在所述固定轴的 两个端部处的所述固定轴凸台部上。
在一个实施例中, 还包括张紧调节组件, 所述张紧调节组件的一 端可旋转地固定到所述摆臂上, 另一端可旋转地固定到所述固定基座 上。
在一个实施例中, 所述固定组件具有固定轴, 所述固定轴一体地 设置有紧固件, 所述固定轴穿过所述第一密封盖, 并且所述紧固件用 于将所述摆臂固定, 其中所述紧固件为螺栓或铆钉。
在一个实施例中, 所述固定组件具有固定轴和紧固件, 所述紧固 件穿过所述第一密封盖和所述固定轴中的孔而将所述摆臂固定, 其中 所述紧固件为螺栓或铆钉。
在一个实施例中, 所述轴承组件是电性绝缘的。
在一个实施例中, 所述静电幹放构件环绕所述固定轴设置, 或者 所述静电幹放构件包括围绕所述固定轴设置的多个分散的部件。
通过上述的结构, 能够在张力调节装置中提供静电幹放路径, 以 释放在张力调节装置运行期间产生的静电。 并且在释放静电的同时, 确保静电释放构件具有小的磨损和长的使用寿命。 附图说明
以下将参考附图, 详细描述本发明的优选实施例, 从这些优选实 施例中, 本发明的上述和其它特征和优点对于本领域技术人员而言将 会变得更加明显, 其中:
图 1是根据本发明的用于传动设备的张力调节装置的俯视图; 图 2是根据本发明的用于传动设备的张力调节装置的仰视图; 图 3是根据本发明的组装好的用于传动设备的张力调节装置的透 视图;
图 4 是根据本发明的用于传动设备的张力调节装置的分解透视 图;
图 5是沿图 1中的线 A-A截取的部分横截面图。 具体实施方式
以下将基于图 1至图 5详细描述本发明的优选实施方式, 需要注 意的是,本文和附图中所述和所示的实施例仅仅只是为了说明的目的, 而并非用来限制本发明的精神和范围。
参考图 1至图 3, 它们分别示出了根据本发明的用于传动设备的 张力调节装置 100的俯视图、 仰视图和透视图。 该张力调节装置 100 安装在固定基座(图中未示出)上, 该固定基座可以是例如发动机缸 体或安装支架。
张力调节装置 100包括两个部分, 摆臂 10和张紧组件 20。 其中 摆臂 10通过固定组件 60可旋转地固定,例如,摆臂 10通过固定组件 60可旋转地固定到固定基座上。 张紧组件 20可旋转地固定到摆臂 10 上。
在优选的实施例中,张力调节装置 100还包括有张紧调节组件 30。 张紧调节组件 30的一端可旋转地固定到摆臂 10上, 另一端可旋转地 固定到固定基座上。 张紧调节组件 30可以采用本领域中常规的结构, 例如可以采用众所周知的液压式自动张紧器或气动式自动张紧器。 在 此不再详细描述其具体结构。
具体地, 在一个实施例中, 摆臂 10通过固定组件 60固定到固定 基座上, 使得摆臂 10能够绕该固定组件 60的轴线转动, 从而摆臂 10 能够相对于固定基座自由地摆动。 张紧组件 20具有张紧轮 21, 该张 紧轮 21通过螺栓 22固定到摆臂 10上,使得张紧轮 21能够绕螺栓 22 的轴线旋转。传动设备的传动部件与该张紧轮 21始终保持接触,从而 张紧轮 21将传动设备的传动部件张紧。在传动设备运行期间, 张紧调 力的功能。 上述结构及其操作可以采用本领域中常规的手段, 因此在 此不再详细描述。
摆臂 10具有摆臂轴 11, 从图 4的分解图中可以看到, 摆臂轴 11 从摆臂 10的两个相对侧面向外伸出。 在摆臂轴 11中形成有贯穿的孔 12。 固定组件 60穿过该孔 12而将摆臂 10固定在固定基座上。
固定组件 60装配在孔 12中, 固定组件 60和孔 12之间设置有轴 承组件 62。 例如, 在一个实施例中, 固定组件 60具有固定轴 61, 固 定轴 61通过轴承组件 62装配在孔 12中, 具体地, 固定轴 61装配在 孔 12中, 固定轴 61和孔 12之间设置有轴承组件 62。 固定组件 60的 两个端部处分别设置有第一密封盖 63和第二密封盖 64, 例如, 在一 个实施例中,第一密封盖 63和第二密封盖 64分别位于固定轴 61的两 个端部处,为了使第一密封盖 63和第二密封盖 64与固定轴 61紧密配 合, 在固定轴 61的两个端部处均形成有固定轴凸台部 612, 第一密封 盖 63和第二密封盖 64分别密封地套在固定轴 61的两个端部处的固定 轴凸台部 612上, 由此可以对固定组件 60与摆臂 10之间的连接部分 起到密封的作用, 防止灰尘等物质进入其中。根据本领域中已知的是, 通常为了确保轴承组件的润滑特性, 轴承组件采用具有自润滑特性的 电性绝缘材料制成, 或者在轴承组件的表面设置具有自润滑特性的电 性绝缘材料, 该电性绝缘材料使得轴承组件是电性绝缘的。
通常, 如果摆臂轴 11与第一密封盖 63接触, 那么在张力调节装 置 100操作过程中, 由于摆臂轴 11会频繁地相对于第一密封盖 63运 动,导致摆臂轴 11和第一密封盖 63磨损,尤其是第一密封盖 63的磨 损。 因此, 在优选的方式中, 摆臂轴 11与第一密封盖 63形成为分离 式结构, 也就是摆臂轴 11不与第一密封盖 63接触, 这样可以避免第 一密封盖 63的磨损,延长张力调节装置的使用寿命, 同时也使静电电 荷无法从摆臂轴 11传导至第一密封盖 63, 造成静电电荷累积。 实际 中, 两个密封盖与摆臂轴 11都不接触。
在本文所述的优选实施例中, 轴承组件 62 包括靠近第一密封盖 63的第一滑动轴承 621和靠近第二密封盖 64的第二滑动轴承 622。在 实际操作中,第二密封盖 64和第二滑动轴承 622距固定基座比第一密 封盖 63和第一滑动轴承 621距固定基座更近。 通常, 第二滑动轴承 622的靠近第二密封盖 64的端部处具有轴承凸缘 623,该轴承凸缘 623 轴向隔离第二密封盖 64和摆臂轴 11, 或者沿轴向设置在第二密封盖 64和摆臂轴 11之间。
在一个实施例中, 固定组件 60还具有紧固件(未示出), 该紧固 件穿过第一密封盖 63和固定轴 61中的孔而将摆臂 10固定。 具体的, 在本文所示的实施例中, 紧固件穿过第一密封盖 63、 第二密封盖 64 和固定轴 61 中的孔而将摆臂 10 固定到固定基座上。 由此, 摆臂 10 能够相对于固定基座自如地摆动或转动, 以适应张力调节的需要。 其 中, 该紧固件可以为螺栓、 铆钉或本领域中已知的其它紧固件。 或者, 在另一个实施例中, 固定组件 60的固定轴 61—体地设置 有紧固件, 该固定轴 61穿过所述第一密封盖 63, 而该紧固件用于将 摆臂 10可转动的固定到固定基座上。 由此, 摆臂 10能够相对于固定 基座自如地摆动或转动, 以适应张力调节的需要。 其中, 该紧固件可 以为螺栓、 铆钉或本领域中已知的其它紧固件。
在张力调节装置 100的运行过程中, 由于摆臂 10通过轴承组件 62相对于固定轴 61频繁地摆动或转动, 使得在它们之间形成静电。 为了消除这种静电,根据本发明的实施例,在第一密封盖 63和摆臂轴 11之间设置有静电幹放构件 65, 静电幹放构件 65分别与第一密封盖 63和摆臂轴 11进行接触, 形成静电释放路径。
在本发明的实施例中, 由于具备了静电幹放构件 65, 使得在固定 够经由摆臂轴 11、 静电幹放构件 65而到达第二密封盖 63, 进而通过 固定轴 61 传递到紧固件, 再传递到固定基座(发动机缸体或安装支 架) , 从而幹放该静电。
为了形成上述静电释放路径, 在该静电释放路径上的各部件应由 导电材料制成, 也就是, 摆臂轴 11、 静电幹放构件 65、 第一密封盖 63、 固定轴 61和紧固件均由导电材料制成。制造这些部件的导电材料 可以采用本领域中常规的材料。
为了减小静电幹放构件的磨损,轴承组件与静电幹放构件间隔开, 也就是轴承组件不与静电幹放构件接触。 由此, 在优选的实施例中, 静电幹放构件 65仅仅与第一密封盖 63和摆臂轴 11接触。
此外, 为了进一步减小静电幹放构件的磨损, 可以减小静电幹放 构件 65与第一密封盖 63和摆臂轴 11的接触面积。 在优选实施例中, 静电幹放构件 65分别与第一密封盖 63和摆臂轴 11进行点接触、线接 触或部分面接触。 这样, 由于仅仅只有静电幹放构件的表面的一部分 与第一密封盖 63和摆臂轴 11接触, 所以能够减小磨损, 延长静电释 放构件的使用寿命。 同时由于静电幹放构件 65与第一密封盖 63和摆 臂轴 11保持接触, 还能够确保静电释放路径的正常操作。 另外, 在采 用点接触、 线接触或部分面接触的情况下, 由于接触面积较小, 使得 静电幹放构件 65在第一密封盖 63和摆臂轴 11之间产生的阻力也较 小, 从而有利于第一密封盖 63和摆臂轴 11之间的相对转动, 不会妨 碍张力调节装置的正常操作。
根据本发明,静电释放构件 65可以具有任何适合的构造,只要其 能够在张力调节装置 100的操作过程中起到幹放静电的作用。 在一个 实施例中, 静电幹放构件 65可以环绕固定轴 61设置, 或者在另一个 实施例中, 静电幹放构件 65可以包括围绕固定轴 61设置的多个 的部件, 这些分散的部件可以为例如垫片或类似部件。
在本发明的优选实施例中, 静电幹放构件 65 分别与第一密封盖 63和摆臂轴 11进行弹性接触。 例如, 在一个实施例中, 静电释放构 件 65具有弹性,弹性且导电地设置在密封盖及固定轴之间。这样设置 优点如下, 具有弹性的静电释放构件可以仅通过较小轴向力保持三个 组件之间的可靠电性连接。
在本发明的优选实施例中,静电幹放构件 65可以为波形弹簧,在 其它实施例中,静电幹放构件 65也可以为螺旋弹簧或蝶形弹簧。通常, 波形弹簧具有足够的弹性, 以能够抵靠第一密封盖 63和摆臂轴 11, 而保持与它们接触。
静电幹放构件可以包括多片波形弹簧, 这些波形弹簧可以以重叠 的方式设置, 以增加轴向力。
波形弹簧可以由任何合适的导电材料制成, 例如可以由导电金属 制成, 以便在确保起到幹放静电作用的同时, 还能够保证波形弹簧具 有足够的弹性。
波形弹簧具有波峰部分和波谷部分, 在实际操作中, 波峰部分和 波谷部分分别与第一密封盖 63和摆臂轴 11进行点接触、 线接触或部 分面接触。 根据波峰部分和波谷部分的形状和结构, 可以选择进行点 接触、 线接触或部分面接触。
通常, 波形弹簧可以具有多个波峰部分和多个波谷部分, 这样波 形弹簧可以与第一密封盖 63和摆臂轴 11分别具有多个接触部位。 这 些接触部位可以独立地选择进行点接触、线接触或部分面接触。 同时, 需要注意的是, 接触部位的数量并不需要与波峰部分或波谷部分的数 量相同, 也就是可以有一部分波峰部分或波谷部分不与第一密封盖 63 和摆臂轴 11接触, 以便使得波形弹簧在第一密封盖 63和摆臂轴 11 之间能够具有更良好的适应性。
在本发明的优选实施例中,波形弹簧与第一密封盖 63具有至少三 个接触部位, 和 /或波形弹簧与摆臂轴 11具有至少三个接触部位。 这 样可以在确保释放静电与适当的磨损之间保持较好的平衡。 当然, 接 触部位的数量也可以是任何合适的数量。
以上参考附图描述了本发明的一些优选实施例, 然而, 本发明并 不限于上述具体描述的实施例。 对于本领域技术人员而言, 在不脱离 所附的本发明的权利要求的范围和精神的情况下, 可以对上述实施例 进行各种修改、 变型和替换。 本发明的保护范围由以下的权利要求限 定。

Claims

1. 一种张力调节装置, 所述张力调节装置包括:
摆臂, 所述摆臂通过固定组件可旋转地固定; 和
张紧组件, 所述张紧组件可旋转地固定到所述摆臂上;
其中, 所述摆臂具有摆臂轴, 所述摆臂轴中形成有孔, 所述固定 组件装配在所述孔中, 所述固定组件和所述孔之间设置有轴承组件, 所述固定组件的一个端部处设置有第一密封盖, 其中在所述第一密封 盖和所述摆臂轴之间设置有静电释放构件, 所述静电释放构件分别与 所述第一密封盖和所述摆臂轴进行接触, 形成静电释放路径。
2. 根据权利要求 1所述的张力调节装置, 其特征在于, 所述静电 释放构件与第一密封盖和摆臂轴进行弹性接触。
3. 根据权利要求 1所述的张力调节装置, 其特征在于, 所述静电 释放构件为波形弹簧、 螺旋弹簧或蝶形弹簧。
4. 根据权利要求 3所述的张力调节装置, 其特征在于, 所述波形 弹簧具有波峰部分和波谷部分, 其中所述波峰部分和所述波谷部分分 别与所述第一密封盖和所述摆臂轴进行接触。
5. 根据权利要求 3或 4所述的张力调节装置, 其特征在于, 所述 波形弹簧由导电金属制成。
6. 根据权利要求 3所述的张力调节装置, 其特征在于, 所述静电 幹放构件包括多片重叠设置的波形弹簧。
7. 根据权利要求 3或 4所述的张力调节装置, 其特征在于, 所述 波形弹簧与所述第一密封盖具有至少三个接触部位,和 /或所述波形弹 簧与所述摆臂轴具有至少三个接触部位。
8. 根据权利要求 1所述的张力调节装置, 其特征在于, 所述第一 密封盖与所述摆臂轴形成分离式结构。
9. 根据权利要求 1所述的张力调节装置, 其特征在于, 所述轴承 组件与所述静电释放构件间隔开。
10. 根据权利要求 1所述的张力调节装置, 其特征在于, 所述固 定组件的另一个端部处设置有第二密封盖, 所述轴承组件包括靠近所 述第一密封盖的第一滑动轴承和靠近所述第二密封盖的第二滑动轴 承, 其中所述第二滑动轴承的靠近所述第二密封盖的端部处具有沿径 向延伸的轴承凸缘。
11. 根据权利要求 1所述的张力调节装置, 其特征在于, 还包括 张紧调节组件,所述张紧调节组件的一端可旋转地固定到所述摆臂上, 另一端可旋转地固定到所述固定基座上。
12. 根据权利要求 1所述的张力调节装置, 其特征在于, 所述固 定组件具有固定轴, 所述固定轴一体地设置有紧固件, 所述固定轴穿 过所述第一密封盖, 并且所述紧固件用于将所述摆臂固定, 其中所述 紧固件为螺栓或铆钉。
13. 根据权利要求 1所述的张力调节装置, 其特征在于, 所述固 定组件具有固定轴和紧固件, 所述紧固件穿过所述第一密封盖和所述 固定轴中的孔而将所述摆臂固定, 其中所述紧固件为螺栓或铆钉。
14. 根据权利要求 1所述的张力调节装置, 其特征在于, 所述轴 承组件是电性绝缘的。
15. 根据权利要求 12或 13所述的张力调节装置, 其特征在于, 所述静电释放构件环绕所述固定轴设置, 或者所述静电释放构件包括 围绕所述固定轴设置的多个分散的部件。
PCT/CN2014/071653 2013-02-07 2014-01-28 张力调节装置 Ceased WO2014121719A1 (zh)

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EP14749346.4A EP2955415B1 (en) 2013-02-07 2014-01-28 Tension adjustment device
ES14749346.4T ES2687472T3 (es) 2013-02-07 2014-01-28 Dispositivo de ajuste de tensión
KR1020157023783A KR101751156B1 (ko) 2013-02-07 2014-01-28 장력 조절 디바이스
BR112015019018A BR112015019018A2 (pt) 2013-02-07 2014-01-28 dispositivo de ajuste de tensão
JP2015556387A JP6130930B2 (ja) 2013-02-07 2014-01-28 張力調整装置
MX2015010116A MX368594B (es) 2013-02-07 2014-01-28 Dispositivo de ajuste de tension.
CA2900128A CA2900128C (en) 2013-02-07 2014-01-28 Tension adjustment device
RU2015137803A RU2609250C1 (ru) 2013-02-07 2014-01-28 Устройство регулирования натяжения
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