阅读说明：本技术 一种用于消除齿轮副传动间隙装置 (Device for eliminating transmission clearance of gear pair ) 是由 黄海涛 郑黎明 夏峥 黄阳 陈瑶 蒋继凤 胡安 杨新国 于 2019-09-04 设计创作，主要内容包括：本发明公开了一种用于消除齿轮副传动间隙装置,所述的齿轮副包括一第一分裂齿轮和一第二分裂齿轮,所述的第一分裂齿轮和第二分裂齿轮之间设有弹簧片,包括：本体,其夹持固定于第一分裂齿轮圆周轮廓面上；摇杆,其设有一转轴,并通过所述转轴连接固定于本体,所述摇杆可以通过该转轴相对应于所述本体旋转；滑杆,其一端活动设置于摇杆内,且该端面设有一调节件,另一端铰接于第二分裂齿轮；旋转所述的调节件,使得所述滑杆在摇杆内滑动,并改变第一分裂齿轮与第二分裂齿轮之间的角度。(The invention discloses a device for eliminating transmission clearance of a gear pair, wherein the gear pair comprises a first split gear and a second split gear, a spring piece is arranged between the first split gear and the second split gear, and the device comprises: the body is clamped and fixed on the circumferential profile surface of the first split gear; the rocker is provided with a rotating shaft and is connected and fixed on the body through the rotating shaft, and the rocker can rotate corresponding to the body through the rotating shaft; one end of the sliding rod is movably arranged in the rocker, the end surface of the sliding rod is provided with an adjusting piece, and the other end of the sliding rod is hinged to the second split gear; and rotating the adjusting piece to enable the sliding rod to slide in the rocker and change the angle between the first split gear and the second split gear.)

1. The utility model provides a be used for eliminating gear pair transmission clearance device, the gear pair include a first split gear and a second split gear, first split gear and second split gear between be equipped with the spring leaf, its characterized in that includes:

the body is clamped and fixed on the circumferential profile surface of the first split gear;

the rocker is provided with a rotating shaft and is connected and fixed on the body through the rotating shaft, and the rocker can rotate corresponding to the body through the rotating shaft;

one end of the sliding rod is movably arranged in the rocker, the end surface of the sliding rod is provided with an adjusting piece, and the other end of the sliding rod is hinged to the second split gear;

and rotating the adjusting piece to enable the sliding rod to slide in the rocker and change the angle between the first split gear and the second split gear.

2. The apparatus as claimed in claim 1, wherein the second split gear is located outside the first split gear.

3. The device for eliminating the transmission clearance of the gear pair as claimed in claim 2, wherein the spring is a C-shaped spring, and two ends of the C-shaped spring are respectively connected to the first split gear and the second split gear; when the C-shaped spring is not stressed, the first split gear and the second split gear are relatively fixed in position; and rotating the second split gear, and deforming the C-shaped spring under the stress, so that a moment is formed between the first split gear and the second split gear.

4. The device for eliminating the gear pair transmission gap according to claim 4, wherein the other end of the slide rod is provided with a threaded hole for screwing a positioning screw.

5. The device for eliminating the transmission clearance of the gear pair as claimed in claim 5, wherein the inner end of the set screw is provided with a cylindrical surface which is matched with the circular hole of the second split gear, and the set screw and the second split gear can rotate mutually.

6. The device for eliminating the transmission clearance of the gear pair as claimed in claim 1, wherein a threaded hole is formed inwardly at one end of the sliding rod, and the adjusting member is connected to the threaded hole at one end of the sliding rod through the rocker lever.

7. The device for eliminating the gear pair transmission gap as recited in claim 6, wherein said adjusting member is a screw.

Technical Field

The invention relates to the field of gear transmission, in particular to a device for eliminating transmission clearance of a gear pair.

Background

The precision transmission device generally adopts 'double-piece gear + elastic component' to eliminate backlash (anti-backlash for short) of gear pair in the process of forward and reverse rotation.

The backlash eliminating form of the double-piece gear and the elastic component is as follows: the transmission gear adopts a split gear, namely one transmission gear is divided into two parts along the direction of a gear shaft, one part is fixedly connected with the gear shaft, the other part is sleeved on the gear shaft in a hollow way and can freely move around the gear shaft, an elastic component such as a C-shaped spring or a wound spring steel wire is additionally arranged between the two parts of the gear, and when the elastic component is installed, a certain pre-tightening torque is applied in advance, so that the split gear is in double-sided contact with the meshed gear, and the gapless transmission of a gear pair is realized.

Referring to fig. 2A and 2B, fig. 2A and 2B are schematic diagrams of backlash elimination of a double-plate gear and an elastic member, and actual backlash elimination of the double-plate gear is not limited to one-stage gear transmission in the diagrams, and can be used for multi-stage transmission, and the basic principles are the same.

The split gear 2 is directly connected with a gear shaft, the split gear 3 is sleeved on the gear shaft of the split gear 2 in an empty mode, the pin 1 is tightly matched with pin holes in the two split gears (2 and 3) to form a whole, the two split gears are respectively meshed with the meshed gear 5, referring to fig. 1, the pin 1 in the two split gears (2 and 3) is sleeved with small holes in two ends of the C-shaped spring 4, and during installation, the split gear 2 is rotated forcibly, so that pre-tightening torque, namely staggered teeth for short, is formed between the split gear 2 and the split gear 3.

The common method for the existing gear backlash elimination method comprises the following steps:

before the split gear 2 and the split gear 3 are installed, the split gear 2, the split gear 3 and the C-shaped spring 4 are twisted with each other by a certain angle (staggered teeth) according to the requirement of spring torsion, and then the side surfaces of the split gear 2 and the split gear 3 are clamped together by a clamp and installed in a transmission device.

The existing gear backlash eliminating method has the following limitations:

the moment for rotating the C-shaped spring 4 is large, so that the operation is laborious.

At least 2 persons are needed for matching operation during installation, one person twists the split gear 3, and the other person is responsible for observing the twisting angle and clamping 2 gears.

Disclosure of Invention

The invention aims to provide a device for eliminating the transmission clearance of a gear pair, which realizes the assembly and adjustment of the elimination of the transmission clearance of the gear pair by rotating a screw by utilizing the principle of a crank-slider mechanism.

In order to achieve the purpose, the invention is realized by the following technical scheme:

the utility model provides a be used for eliminating gear pair transmission clearance device, the gear pair include a first split gear and a second split gear, first split gear and second split gear between be equipped with the spring leaf, its characteristics are, include:

the body is clamped and fixed on the circumferential profile surface of the first split gear;

the rocker is provided with a rotating shaft and is connected and fixed on the body through the rotating shaft, and the rocker can rotate corresponding to the body through the rotating shaft;

one end of the sliding rod is movably arranged in the rocker, the end surface of the sliding rod is provided with an adjusting piece, and the other end of the sliding rod is hinged to the second split gear;

and rotating the adjusting piece to enable the sliding rod to slide in the rocker and change the angle between the first split gear and the second split gear.

The second split gear is positioned outside the first split gear.

The spring is a C-shaped spring, and two ends of the C-shaped spring are respectively connected to the first split gear and the second split gear; when the C-shaped spring is not stressed, the first split gear and the second split gear are relatively fixed in position; and rotating the second split gear, and deforming the C-shaped spring under the stress, so that a moment is formed between the first split gear and the second split gear.

The other end of the sliding rod is provided with a threaded hole, and the threaded hole is used for screwing in a positioning screw.

The inner end of the positioning screw is provided with a cylindrical surface which is matched with the round hole of the second split gear, and the positioning screw and the second split gear can rotate mutually.

One end of the sliding rod is inwards provided with a threaded hole, and the adjusting piece penetrates through the rocker to be connected with the threaded hole at one end of the sliding rod.

The adjusting piece is a screw.

Compared with the prior art, the invention has the following advantages:

the torque is applied by rotating the screw, so that labor is saved. The assembly machine can be operated by one person, is simple to operate, and greatly improves the assembly efficiency.

Drawings

FIG. 1 is a view of a C-spring configuration;

FIG. 2A is a front view of the double plate gear and the elastic member;

FIG. 2B is a view from A-A of FIG. 2A;

FIG. 3 is a block diagram of a device for eliminating the transmission backlash of a gear pair;

FIG. 4 is a block diagram of a gear pair;

FIG. 5 is an exploded view of the part of FIG. 4;

FIG. 6 is a schematic diagram of an application of the device for eliminating the transmission clearance of the gear pair;

FIG. 7 is a left side view of FIG. 6;

FIG. 8 is a view from the B-B direction of FIG. 6;

FIG. 9 is a view from direction A-A of FIG. 7;

fig. 10 is a view in the direction of C-C of fig. 6.

Detailed Description

The present invention will now be further described by way of the following detailed description of a preferred embodiment thereof, taken in conjunction with the accompanying drawings.

Referring to fig. 4 and 5, a gear pair comprises a first split gear 8 and a second split gear 9, wherein the second split gear 9 is located on the outer side of the first split gear 8, a C-shaped spring 10 is installed between the first split gear 8 and the second split gear 9, two ends of the C-shaped spring 10 are provided with two holes and hinged to pins on the first split gear 8 and the second split gear 9 respectively, a retainer ring 11 and a screw 12 limit axial displacement of the first split gear and the second split gear, and the second split gear 9 can rotate relative to the first split gear 8. When the C-shaped spring 10 is not stressed, the position between the first split gear 8 and the second split gear 9 is relatively fixed, the second split gear 9 is rotated, and the C-shaped spring 10 is stressed and deformed, so that a moment is formed between the two gears. The anti-backlash gear pair is introduced, the use working condition of the tool is conveniently introduced, and the anti-backlash application range of the tool is not limited to the double-plate gear and spring anti-backlash mode.

Referring to fig. 3, 6-10, for the above gear pair, the present application provides a device for eliminating transmission clearance of the gear pair, comprising: the body 1 is clamped and fixed on the circumferential profile surface of the first split gear 8; the rocker 4 is provided with a rotating shaft and is connected and fixed on the body 1 through the rotating shaft, and the rocker 4 can rotate corresponding to the body 1 through the rotating shaft; one end of the sliding rod 2 is movably arranged in the rocker 4, the end surface is provided with an adjusting piece 5, and the other end of the sliding rod is hinged with a second split tooth 9; and rotating the adjusting piece 5 to enable the sliding rod 2 to slide in the rocker and change the angle between the first split gear and the second split gear.

Specifically, the body 1 is fixed by a screw 3, a screw 6 and the first split gear 8, the screw 3 is an M3 × 8GB818 screw which is screwed into an M3 screw hole of the first split gear 8, and a 2-side M2.5 × 8GB818 screw is tightly pressed against the side surface of the first split gear 8.

The rocker 4 is provided with a shaft with the diameter of 3.5, the body 1 is provided with a hole with the diameter of 3.5, the rocker 4 and the body form shaft hole matching, the rocker 4 can rotate around the shaft relative to the body 1, the other end of the sliding rod 2 is provided with a threaded hole, and the threaded hole is used for screwing in a positioning screw 7.

The inner end of the positioning screw 7 is provided with a cylindrical surface 71 which is matched with the round hole of the second split gear 9, and the positioning screw 7 and the second split gear 9 can rotate mutually. One end of the sliding rod is inwards provided with a threaded hole, and the adjusting piece penetrates through the rocker to be connected with the threaded hole at one end of the sliding rod 2. In a specific embodiment, the adjusting member 5 is an anti-backlash screw, further, the sliding rod 2 has a 4 × 4 rectangular cross section, the rocker 4 is provided with a 4 × 4 rectangular hole to form a small-backlash fit with the sliding rod, a threaded hole is designed on an end surface of the sliding rod 2 extending into the rocker 4, and the anti-backlash screw is rotated to change the position of the sliding rod 2 in the rocker 4, so that the angle between the two split gears can be changed.

While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.