WO2019075931A1 - 消隙直齿圆柱齿轮 - Google Patents

消隙直齿圆柱齿轮 Download PDF

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Publication number
WO2019075931A1
WO2019075931A1 PCT/CN2018/000152 CN2018000152W WO2019075931A1 WO 2019075931 A1 WO2019075931 A1 WO 2019075931A1 CN 2018000152 W CN2018000152 W CN 2018000152W WO 2019075931 A1 WO2019075931 A1 WO 2019075931A1
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Prior art keywords
gear
sub
block
spring
hole
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PCT/CN2018/000152
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English (en)
French (fr)
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高志坚
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常州机电职业技术学院
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Publication of WO2019075931A1 publication Critical patent/WO2019075931A1/zh

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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
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/17—Toothed wheels
    • F16H55/18—Special devices for taking up backlash
    • 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
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly

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  • the invention relates to the technical field of gear transmission, in particular to a backlash spur gear.
  • Both the gear and the gear have a tooth-side clearance.
  • a gear capable of eliminating the flank clearance must be used in order to eliminate the amount of vacancy.
  • a backlash spur gear is a commonly used gear that eliminates the flank clearance.
  • the patent application No. CN201220072972.8 describes the basic structure of the anti-backlash spur gear. Two identical gear pieces are designed at one end of the spur gear transmission pair. The two gear pieces are axially assembled side by side, and the two gear pieces are implicated by springs.
  • the anti-backlash spur gear of this structure has the following disadvantages: 1 the transmission force is limited by the elastic force of the spring, and if the transmission force exceeds the elastic force, the flank clearance is still generated; 2 if the two gear pieces after the backlash are eliminated For the fastening connection, the transmission force is not limited to the spring force of the spring. However, the automatic compensation function of the flank clearance is lost, and a new flank clearance is generated after the tooth profile is worn for a long time.
  • An object of the present invention is to provide a backlash spur gear having a transmission force that is not limited by the spring force of the spring and which can automatically compensate the backlash of the tooth.
  • a backlash spur gear including a main gear, a sub gear, a block, and a spring
  • the main gear is provided with a cylindrical boss coaxial with the main gear a sliding surface is formed on the cylindrical boss, and the sliding surface is distributed on the cylindrical surface of the cylindrical boss
  • the shape, parameters and the number of teeth of the auxiliary gear are the same as the main gear
  • the auxiliary gear is coaxial with the auxiliary gear a large hole, the cylindrical boss of the main gear is inserted into the large hole of the auxiliary gear, the cylindrical surface of the cylindrical boss is rotatably engaged with the large hole of the auxiliary gear, and the large hole wall of the auxiliary gear is opened with a spring hole
  • the bottom surface, the curved surface and the concave hole, the bottom surface of the clamping block is in sliding contact with the sliding surface of the main gear, and the curved surface of the clamping block is in sliding contact with the large hole wall surface of the auxiliary gear, and the side of the
  • the distance of the surface is greater than the distance from the opposite side to the bottom surface;
  • the spring is a compression spring, the number of springs is the same as the number of the blocks, and the two ends of the spring are respectively embedded in the spring holes of the auxiliary gear and the pockets of the block.
  • the anti-backlash spur gear of the present invention can be improved.
  • a screw is added, the counter gear is provided with a threaded through hole, the block is opened with a blind hole, and the screw is screwed with the threaded through hole.
  • the screw is screwed into the blind hole of the block and pushes the block to move in the direction of the elastic force of the spring, so that the block and the pinion and the main gear are disengaged, thereby facilitating assembly and disassembly.
  • the anti-backlash spur gear of the present invention can also be improved.
  • the baffle and the screw are added, and the baffle is annular, and the outer diameter of the baffle is slightly larger than the diameter of the large hole of the sub-gear, and the screw is screwed through the baffle into the end surface of the cylindrical boss which is opened on the main gear. In the screw hole.
  • the anti-backlash spur gear of the invention has the advantages that the transmission force is not restricted by the elastic force of the spring, the tooth gap can be automatically compensated after the tooth wears, and the structure is simple.
  • FIG. 1 is a schematic structural view of a backlash spur gear of the present invention
  • FIG. 2 is a schematic structural view of a main gear
  • Figure 3 is a left side view of the main gear shown in Figure 2;
  • Figure 4 shows a cross-sectional structure of the sub gear
  • Figure 5 shows a cross-sectional structure of the block
  • Figure 6 shows the structure of the anti-backlash spur gear after adding the screw and the baffle
  • Figure 7 is a half cross-sectional view taken along line A-A of Figure 6;
  • the markings in the drawing are: 1 - main gear, 1-1 - sliding surface, 1-2 - cylindrical surface, 2 - auxiliary gear, 2-1 - large hole, 2-2 - spring hole , 2-3 - threaded through hole, 3 - block, 3-1 - bottom, 3-2 - curved surface, 3-3 - pit, 3-4 - blind hole, 4 - - spring, 5 - meshing gear, 6 - screw, 7 - baffle, 8 - screw, 9 - screw hole.
  • a backlash spur gear includes a main gear 1 , a sub gear 2 , a block 3 , and a spring 4 ; as shown in FIG. 1 , FIG. 2 and FIG. 3 , the main gear 1 is provided. a cylindrical boss coaxial with the axis of the main gear 1, three sliding surfaces 1-1 are machined on the cylindrical boss, and the sliding surface 1-1 is evenly distributed on the cylindrical surface 1-2 of the cylindrical boss; As shown in FIG. 4, the pinion shape, parameters, and number of teeth of the sub-gear 2 are the same as those of the main gear 1, and the sub-gear 2 is provided with a large hole 2-1 coaxial with the axis of the sub-gear 2, and a cylindrical convexity of the main gear 1.
  • the table is inserted into the large hole 2-1 of the sub-gear 2, the cylindrical surface 1-2 of the cylindrical boss is rotatably fitted with the large hole 2-1 of the sub-gear 2, and the large hole 2-1 of the sub-gear 2 has a spring hole 2-2, the number of the spring holes 2-2 is the same as the number of the sliding faces 1-1 of the main gear 1, and is evenly distributed in the circumferential direction on the wall of the large holes 2-1; as shown in Fig. 1, Fig.
  • the number of blocks 3 is the same as the number of sliding faces 1-1 of the main gear 1, and the block 3 is provided with a bottom surface 3-1, a curved surface 3-2, a dimple 3-3, and a bottom surface 3-1 of the block 3 and the main
  • the sliding surface 1-1 of the gear 1 is in sliding contact
  • the curved surface 3-2 of the block 3 is in sliding contact with the wall surface of the large hole 2-1 of the sub-gear 2.
  • the arc shape of the curved surface 3-2 can increase the contact area of the block 3 with the wall surface of the large hole 2-1 of the sub-gear 2, as shown in Fig. 5, near the pit 3-3 on the curved surface 3-2.
  • the spring 4 is a compression spring
  • the number of the springs 4 is the same as the number of the blocks 3
  • the axis rotates counterclockwise, and the block 3 drives the main gear 1 to rotate counterclockwise.
  • the sub gear 2 rotates clockwise with respect to the main gear 1, and the tooth profile of the sub gear 2 and the main gear 1 which are originally aligned with each other is generated. A small amount of misalignment, so as to achieve the purpose of eliminating the flank clearance.
  • the elastic force of the spring 4 is larger, and the card
  • the block 3 slides to a narrow portion formed by the sliding surface 1-1 and the wall surface of the large hole 2-1, so that the greater the elastic force of the spring 4, the larger the curved surface 3-2 of the block 3 and the sub-gear 2
  • the wall surface of the hole 2-1 and the bottom surface 3-1 of the block 3 are closely attached to the sliding surface 1-1 of the main gear 1, and the greater the pressure between them, the curved surface 3-2 of the block 3 and the sub-gear
  • the frictional force between the wall 2-1 of the large hole 2-1 and the bottom surface 3-1 of the block 3 and the sliding surface 1-1 of the main gear 1 is larger.
  • the transmission force that can be transmitted depends not only on the elastic force of the spring 4 but also on the large hole 2-1 wall surface and the card of the sub gear 2.
  • the arc surface 3-2 of the block 3 the friction between the bottom surface 3-1 of the block 3 and the sliding surface 1-1 of the main gear 1, so that the anti-backlash spur gear rotates counterclockwise without a gap transmission
  • the power is much greater than the spring force of the spring 4.
  • the anti-backlash spur gear of the present invention can be improved.
  • the screw 6 is added, the number of the screws 6 is the same as the number of the blocks 3, and the sub-gear 2 is provided with a threaded through hole 2-3, and the number of the threaded through holes 2-3 is the same as that of the screw 6.
  • the block 3 is opened with a blind hole 3-4, and the screw 6 is screwed with the threaded through hole 2-3.
  • the invention rotates the screw 6, and one end of the screw 6 is unscrewed from the wall of the large hole 2-1 of the sub-gear 2, and the screw 6 is inserted into the blind hole 3-4 of the block 3 and pushes the block 3 against the spring.
  • the elastic force direction of 4 moves, so that the block 3 originally stuck between the wall surface of the large hole 2-1 of the sub-gear 2 and the sliding surface 1-1 of the main gear 1 is disengaged from the sub-gear 2 and the main gear 1, thereby facilitating Assembly and disassembly.
  • the anti-backlash spur gear of the present invention can also be improved.
  • the baffle 7 and the screw 8 are added, and the baffle 7 has an annular shape, and the outer diameter of the baffle 7 is slightly larger than the diameter of the large hole 2-1 of the sub-gear 2, the screw 8 is screwed into the screw hole 9 formed on the end surface of the cylindrical boss of the main gear 1 through the baffle 7, and the baffle 7 is fixed on the end surface of the cylindrical boss of the main gear 1, and the baffle 7 and the sub-gear 2 There is a proper gap between them.
  • the function of the baffle 7 is to limit the sub-gear 2 to the cylindrical boss of the main gear 1, and block the sub-gear 2 from moving axially out of the cylindrical boss of the main gear 1, and does not affect the rotation of the sub-gear 2 relative to the main gear 1.
  • the spring 4 and the block 3 are closed to prevent the spring 4 and the block 3 from being ejected.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gears, Cams (AREA)

Abstract

一种消隙直齿圆柱齿轮，包括主齿轮（1）、副齿轮（2）、卡块（3）、弹簧（4）；主齿轮（1）设有与主齿轮（1）同轴的圆柱凸台，圆柱凸台上加工出滑动面（1-1）；副齿轮（2）设有大孔（2-1），大孔（2-1）壁上开有簧孔（2-2），主齿轮（1）的圆柱凸台插入副齿轮（2）的大孔（2-1）中；卡块（3）设有底面（3-1）、弧形面（3-2）、凹坑（3-3），卡块（3）的底面（3-1）与主齿轮（1）的滑动面（1-1）滑动接触，卡块（3）的弧形面（3-2）与副齿轮（2）的大孔（2-1）壁面滑动接触，在弧形面（3-2）上靠近凹坑（3-3）的一边到底面（3-1）的距离大于对边到底面（3-1）的距离；弹簧（4）为压簧，其两端分别嵌入副齿轮（2）的簧孔（2-2）与卡块（3）的凹坑（3-3）中。这种装置具有传动力不受弹簧的弹性力限制，自动补偿齿侧间隙和结构简单的优点。

Description

消隙直齿圆柱齿轮 技术领域
本发明涉及齿轮传动技术领域，具体涉及一种消隙直齿圆柱齿轮。
背景技术
齿轮与齿轮的啮合均有齿侧间隙，当齿轮传动副需要正反转动的情况下，会产生一定的空回量，降低传动精度。因此，在需要精确传动的装置中，须使用能消除齿侧间隙的齿轮以便消除空回量。消隙直齿圆柱齿轮就是一种常用的能消除齿侧间隙的齿轮。申请号为CN201220072972.8的专利说明了消隙直齿圆柱齿轮的基本结构，在直齿圆柱齿轮传动副的一端设计两相同齿轮片，两齿轮片轴向并列装配，并用弹簧将两齿轮片牵连，利用弹簧的弹性力使两齿轮片相对转动，两齿轮片原本互相对齐的齿廓便产生了少量错位，与啮合齿轮的齿廓贴合。如此，无论是正转还是反转，这两齿轮片均与啮合齿轮紧密啮合，从而达到消除齿侧间隙的目的。但是这种结构的消隙直齿圆柱齿轮有如下缺点：①传动力受限于弹簧的弹性力，如果传动力超过弹性力，仍会产生齿侧间隙；②如果将消隙后的两齿轮片紧固连接，传动力则不限于弹簧的弹性力。但这样就丧失了齿侧间隙自动补偿功能，齿廓长期运转磨损后，又会产生新的齿侧间隙。
发明内容
本发明的目的是提供一种传动力不受弹簧的弹性力限制，并能自动补偿齿侧间隙的消隙直齿圆柱齿轮。
为实现上述目的，本发明采取的技术方案是：一种消隙直齿圆柱齿轮，包括主齿轮、副齿轮、卡块、弹簧；所述主齿轮设有与主齿轮同轴线的圆柱凸台，在圆柱凸台上加工出滑动面，滑动面分布在圆柱凸台的圆柱面上；所述副齿轮的轮齿形状、参数、齿数与主齿轮相同，副齿轮设有与副齿轮同轴线的大孔，主齿轮的圆柱凸台插入副齿轮的大孔中，圆柱凸台的圆柱面与副齿轮的大孔转动配合，副齿轮的大孔壁上开有簧孔；所述卡块设有底面、弧形面、凹坑，卡块的底面与主齿轮的滑动面滑动接触，卡块的弧形面与副齿轮的大孔壁面滑动接触，在弧形面上靠近凹坑的一边到底面的距离大于对边到底面的距离；所述弹簧为压簧，弹簧的数量与卡块的数量相同，弹簧的两端分别嵌入副齿轮的簧孔与卡块的凹坑中。
本发明所述的消隙直齿圆柱齿轮可改进。增加螺杆，所述副齿轮设有螺纹通孔，所述卡块开有盲孔，所述螺杆与螺纹通孔旋合。在装配与分解时，旋入螺杆，螺杆插入卡块的盲孔中并推动卡块逆弹簧的弹性力方向移动，使卡块与副齿轮、主齿轮脱开，从而便于装配与分解。
本发明所述的消隙直齿圆柱齿轮还可改进。增加挡板、螺钉，所述挡板呈圆环状， 挡板的外径略大于副齿轮的大孔的孔径，所述螺钉穿过挡板拧入开设在主齿轮的圆柱凸台端面上的螺孔中。
本发明所述的消隙直齿圆柱齿轮具有传动力不受弹簧的弹性力限制、轮齿磨损后能自动补偿齿侧间隙、结构简单的优点。
附图说明
下面对本说明书各附图所表达的内容及附图中的标记作简要说明：
图1是本发明消隙直齿圆柱齿轮的结构示意图；
图2是主齿轮的结构示意图；
图3是图2示出的主齿轮的左视图；
图4示出了副齿轮的剖视结构；
图5示出了卡块的剖视结构；
图6示出了增加螺杆、挡板后的消隙直齿圆柱齿轮的结构；
图7是图6的A-A半剖视图。
附图中的标记为：1——主齿轮，1-1——滑动面，1-2——圆柱面，2——副齿轮，2-1——大孔，2-2——簧孔，2-3——螺纹通孔，3——卡块，3-1——底面，3-2——弧形面，3-3——凹坑，3-4——盲孔，4——弹簧，5——啮合齿轮，6——螺杆，7——挡板，8——螺钉，9——螺孔。
具体实施方式
如图1所示，一种消隙直齿圆柱齿轮，包括主齿轮1、副齿轮2、卡块3、弹簧4；如图1、图2、图3所示，所述主齿轮1设有与主齿轮1的轴线同轴的圆柱凸台，在圆柱凸台上加工出三个滑动面1-1，滑动面1-1均匀分布在圆柱凸台的圆柱面1-2上；如图1、图4所示，所述副齿轮2的轮齿形状、参数、齿数与主齿轮1相同，副齿轮2设有与副齿轮2轴线同轴的大孔2-1，主齿轮1的圆柱凸台插入副齿轮2的大孔2-1中，圆柱凸台的圆柱面1-2与副齿轮2的大孔2-1转动配合，副齿轮2的大孔2-1壁上开有簧孔2-2，簧孔2-2的数量与主齿轮1的滑动面1-1数量相同且在大孔2-1壁上沿周向均匀分布；如图1、图5所示，所述卡块3的数量与主齿轮1的滑动面1-1数量相同，卡块3设有底面3-1、弧形面3-2、凹坑3-3，卡块3的底面3-1与主齿轮1的滑动面1-1滑动接触，卡块3的弧形面3-2与副齿轮2的大孔2-1壁面滑动接触，弧形面3-2的弧形能增加卡块3与副齿轮2的大孔2-1壁面的接触面积，如图5所示，在弧形面3-2上靠近凹坑3-3的一边到底面3-1的距离大于对边到底面3-1的距离；如图1所示，所述弹簧4为压簧，弹簧4的数量与卡块3的数量相同，弹簧4的两端分别嵌入副齿轮2的簧孔2-2与卡块3的凹坑3-3中，弹簧4的弹性力推动副齿轮2顺时针转动，同时弹簧4的弹性力推动卡块3绕主齿轮1的轴线逆时针转动，卡块3再带动主齿轮1逆时针转动，这样，副齿轮2相对于主齿轮1产生了顺时针转动，副齿轮2与主齿轮1原本互相对齐的齿廓便产生了少量错位，从而达到消除齿侧 间隙的目的。因为卡块3在弹簧4的弹性力推动下朝主齿轮1的滑动面1-1与副齿轮2的大孔2-1壁面所形成的窄缝方向滑动，弹簧4的弹性力越大，卡块3就越往滑动面1-1与大孔2-1壁面所形成的狭窄处滑，所以，弹簧4的弹性力越大，卡块3的弧形面3-2与副齿轮2的大孔2-1壁面以及卡块3的底面3-1与主齿轮1的滑动面1-1贴得越紧，它们之间的压力越大，卡块3的弧形面3-2与副齿轮2的大孔2-1壁面以及卡块3的底面3-1与主齿轮1的滑动面1-1之间的摩擦力越大。
如图1所示，当啮合齿轮5带动本发明所述的消隙直齿圆柱齿轮顺时针转动时，啮合齿轮5的轮齿直接推动主齿轮1的轮齿，因为主齿轮1与副齿轮2的齿廓错位而消除了消隙直齿圆柱齿轮与啮合齿轮5的齿侧间隙，所以实现了消隙直齿圆柱齿轮顺时针转动时的无间隙传动。
如图1所示，当啮合齿轮5带动本发明所述的消隙直齿圆柱齿轮逆时针转动时，啮合齿轮5的轮齿推动副齿轮2的轮齿，使副齿轮2产生逆时针转动，此时，副齿轮2的大孔2-1壁面与卡块3的弧形面3-2之间的摩擦力、以及弹簧4施加在卡块3上的弹性力驱使卡块3随副齿轮2同步逆时针转动，同时，卡块3的底面3-1与主齿轮1的滑动面1-1之间的摩擦力驱使主齿轮1也随卡块3同步逆时针转动，因为啮合齿轮5的轮齿与副齿轮2的轮齿、副齿轮2的大孔2-1壁面与卡块3的弧形面3-2、卡块3的底面3-1与主齿轮1的滑动面1-1之间均无间隙，所以实现了消隙直齿圆柱齿轮逆时针转动时的无间隙传动。
如图1所示，消隙直齿圆柱齿轮逆时针无间隙传动时，所能传递的传动力，不仅取决于弹簧4的弹性力，更取决于副齿轮2的大孔2-1壁面与卡块3的弧形面3-2、卡块3的底面3-1与主齿轮1的滑动面1-1之间的摩擦力，所以，消隙直齿圆柱齿轮逆时针无间隙传动时的传动力远远大于弹簧4的弹性力。
为了便于装配与分解，本发明所述的消隙直齿圆柱齿轮可改进。如图6所示，增加螺杆6，所述螺杆6的数量与卡块3数量相同，所述副齿轮2设有螺纹通孔2-3，螺纹通孔2-3的数量与螺杆6数量相同且在副齿轮2的圆周方向上均匀分布，所述卡块3开有盲孔3-4，螺杆6与螺纹通孔2-3旋合。本发明在装配与分解时，旋转螺杆6，螺杆6的一端从副齿轮2的大孔2-1壁面旋出，螺杆6插入卡块3的盲孔3-4中并推动卡块3逆弹簧4的弹性力方向移动，使原本卡在副齿轮2的大孔2-1壁面、主齿轮1的滑动面1-1之间的卡块3与副齿轮2、主齿轮1脱开，从而便于装配与分解。旋出螺杆6，使螺杆6从卡块3的盲孔3-4中移出，螺杆6施加在卡块3上的逆弹簧4弹性力方向的力消除，弹簧4推动卡块3朝主齿轮1的滑动面1-1与副齿轮2的大孔2-1壁面所形成的窄缝方向滑动，卡块3的底面3-1与主齿轮1的滑动面1-1以及卡块3的弧形面3-2与副齿轮2的大孔2-1壁面贴紧，这样，消隙直齿圆柱齿轮就进入工作状态。
本发明所述的消隙直齿圆柱齿轮还可改进。如图6、图7所示，增加挡板7、螺 钉8，所述挡板7呈圆环状，挡板7的外径略大于副齿轮2的大孔2-1的孔径，所述螺钉8穿过挡板7拧入开设在主齿轮1的圆柱凸台端面上的螺孔9中，将挡板7固定在主齿轮1的圆柱凸台的端面上，挡板7与副齿轮2之间有适当的间隙。挡板7的作用是将副齿轮2限位于主齿轮1的圆柱凸台上，阻挡副齿轮2沿轴向移出主齿轮1的圆柱凸台，且不影响副齿轮2相对于主齿轮1转动，并将弹簧4、卡块3封闭起来，防止弹簧4、卡块3弹出。

Claims (3)

  1. 一种消隙直齿圆柱齿轮，其特征在于：包括主齿轮(1)、副齿轮(2)、卡块(3)、弹簧(4)；所述主齿轮(1)设有与主齿轮(1)同轴线的圆柱凸台，在圆柱凸台上加工出滑动面(1-1)，滑动面(1-1)分布在圆柱凸台的圆柱面(1-2)上；所述副齿轮(2)的轮齿形状、参数、齿数与主齿轮(1)相同，副齿轮(2)设有与副齿轮(2)同轴线的大孔(2-1)，主齿轮(1)的圆柱凸台插入副齿轮(2)的大孔(2-1)中，圆柱凸台的圆柱面(1-2)与副齿轮(2)的大孔(2-1)转动配合，副齿轮(2)的大孔(2-1)壁上开有簧孔(2-2)；所述卡块(3)设有底面(3-1)、弧形面(3-2)、凹坑(3-3)，卡块(3)的底面(3-1)与主齿轮(1)的滑动面(1-1)滑动接触，卡块(3)的弧形面(3-2)与副齿轮(2)的大孔(2-1)壁面滑动接触，在弧形面(3-2)上靠近凹坑(3-3)的一边到底面(3-1)的距离大于对边到底面(3-1)的距离；所述弹簧(4)为压簧，弹簧(4)的数量与卡块(3)的数量相同，弹簧(4)的两端分别嵌入副齿轮(2)的簧孔(2-2)与卡块(3)的凹坑(3-3)中。
  2. 根据权利要求1所述的消隙直齿圆柱齿轮，其特征在于：还包括螺杆(6)，所述副齿轮(2)设有螺纹通孔(2-3)，所述卡块(3)开有盲孔(3-4)，所述螺杆(6)与螺纹通孔(2-3)旋合。
  3. 根据权利要求1或2所述的消隙直齿圆柱齿轮，其特征在于：还包括挡板(7)、螺钉(8)，所述挡板(7)呈圆环状，挡板(7)的外径略大于副齿轮(2)的大孔(2-1)的孔径，所述螺钉(8)穿过挡板(7)拧入开设在主齿轮(1)的圆柱凸台端面上的螺孔(9)中。
PCT/CN2018/000152 2017-10-19 2018-04-23 消隙直齿圆柱齿轮 WO2019075931A1 (zh)

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