阅读说明：本技术 一种带位置调整的不完全齿轮自动啮合装置 (Incomplete gear automatic meshing device with position adjustment function ) 是由 高峰 潘子月 高航 高尚 李艳 于 2020-05-21 设计创作，主要内容包括：本发明公开一种带位置调整的不完全齿轮自动啮合装置,包括有主动齿轮与从动齿轮,主动齿轮为不完全齿轮,主动齿轮的一个端面设置有拨杆,从动齿轮的一个端面设置有挡块,拨杆与所述挡块位于同一侧,主动齿轮与从动齿轮进入啮合时,拨杆与挡块相接触。本发明采用引导拨杆和挡块,引导从动齿轮进行预转动,避过两齿顶碰撞区,从而使从动齿轮成功与主动不完全齿轮进行啮合,延长齿轮寿命,消除安全隐患。(The invention discloses an automatic incomplete gear meshing device with position adjustment, which comprises a driving gear and a driven gear, wherein the driving gear is an incomplete gear, a shifting rod is arranged on one end surface of the driving gear, a stop block is arranged on one end surface of the driven gear, the shifting rod and the stop block are positioned on the same side, and the shifting rod is contacted with the stop block when the driving gear and the driven gear are meshed. The invention adopts the guide deflector rod and the stop block to guide the driven gear to pre-rotate and avoid the collision area of two tooth tops, thereby successfully meshing the driven gear with the driving incomplete gear, prolonging the service life of the gear and eliminating potential safety hazards.)

1. The automatic incomplete gear meshing device with the position adjustment function is characterized by comprising a driving gear (1) and a driven gear (4), and is characterized in that the driving gear (1) is an incomplete gear, a shifting rod (2) is arranged on one end face of the driving gear (1), a stop block (3) is arranged on one end face of the driven gear (4), the shifting rod (2) and the stop block (3) are located on the same side, and when the driving gear (1) and the driven gear (4) are meshed, the shifting rod (2) is in contact with the stop block (3).

2. The automatic meshing device with position adjustment for an incomplete gear according to claim 1, wherein the stopper (3) is installed at a side of any one tooth of the driven gear (4), and the distance from the center of the driven gear (4) at which the stopper (3) is installed is a reference circle radius.

3. The automatic meshing device with position adjustment for the incomplete gear is characterized in that the shifting lever (2) is installed outside one of two outer teeth of the driving gear (1), and a tooth space angle is formed between the installation position of the shifting lever (2) and the outer teeth, and the tooth space angle is alpha.

4. The automatic meshing device with position adjustment for an incomplete gear according to claim 2, characterized in that the empirical formula of the length L of the shift lever (2) is:

in the formula (1), L₁To ensure the normal operation of the deviceβ is the angle between the shift lever and the horizontal direction when the shift lever (2) and the stop block (3) are just contacted, in order to ensure the stable contact between the shift lever (2) and the stop block (3), the length of the shift lever is extended, and the extension part L is₂M is the module of the driving gear (1) and the driven gear (4), and the module of the two gears is the same.

5. The automatic meshing device with position adjustment for an incomplete gear according to claim 4, wherein the angle β between the shift lever and the horizontal direction when the shift lever (2) and the stopper (3) are just in contact is:

β≈1.4*(360/Z)° (2)

in the formula (2), the reaction mixture is,

a＝M*Z (3)

in the formulas (2) and (3), a is the center distance when the driving gear (1) is meshed with the driven gear (4); z is the number of teeth of the driven gear (4).

6. The automatic meshing device with position adjustment for an incomplete gear according to claim 1, characterized in that the shift lever (2) is mounted on the driving gear (1) by means of a socket head cap screw (5).

7. The automatic meshing device with position adjustment for an incomplete gear according to claim 1, characterized in that the stopper (3) is screw-mounted on the driven gear (4).

8. The automatic meshing device with position adjustment for an incomplete gear according to claim 2, characterized in that the number of the stoppers (3) on the driven gear (4) is plural.

Technical Field

The invention belongs to the technical field of mechanical transmission devices, and relates to an automatic meshing device with a position adjusting function for an incomplete gear.

Background

The incomplete gear mechanism is an intermittent motion mechanism evolved from a common involute gear mechanism. When the toothed part of the driving wheel is meshed with the gear teeth of the driven wheel, the driven wheel is pushed to rotate; when the toothed part of the driving wheel is disengaged from the driven wheel, the driven wheel stops or rotates freely. In engineering practice, incomplete gear transmission is often used in intermittent motion, but because the driving gear and the driven gear are in an intermittent meshing state, in an interval from disengagement to next engagement, if the position of the driven gear cannot be determined, a situation of 'top-to-top' may occur in the next engagement, namely, the tops of two gears collide, so that the device is jammed, the gears are damaged, and safety accidents can be caused seriously. Therefore, a device is needed to avoid the collision of the tooth tops of the two gears, so as to prolong the service life of the gears and eliminate potential safety hazards.

Disclosure of Invention

The invention aims to provide an automatic incomplete gear meshing device with a position adjusting function, and solves the problems that in the prior art, due to collision of a top, the device is locked, and gears are damaged.

The invention adopts the technical scheme that the automatic meshing device with the position adjusting function for the incomplete gear comprises a driving gear and a driven gear, wherein the driving gear is the incomplete gear, a shifting rod is arranged on one end face of the driving gear, a stop block is arranged on one end face of the driven gear, the shifting rod and the stop block are positioned on the same side, and the shifting rod is contacted with the stop block when the driving gear and the driven gear are meshed.

The invention is also characterized in that:

the stop block is arranged on the side surface of any one tooth of the driven gear, and the distance from the mounting position of the stop block to the center of the driven gear is the radius of a reference circle.

The deflector rod is arranged on the outer side of one of the two outer side teeth of the driving gear, and an inter-tooth angle is formed between the installation position of the deflector rod and the outer side teeth and is an alpha angle.

The empirical formula for the length L of the dial is:

in the formula (1), L₁For ensuring the shortest length of the deflector rod for normal operation, β is deflector rodThe length of the deflector rod is extended and the extension part L is extended to ensure the stable contact of the deflector rod and the stop block₂M is the module of the driving gear and the driven gear, and the module of the two gears is the same.

The included angle beta between the deflector rod and the horizontal direction when the deflector rod is just contacted with the stop block is as follows:

β≈1.4*(360/Z)° (2)

in the formula 2, the first step is,

a＝M*Z (3)

in the formulas (2) and (3), a is the center distance when the driving gear is meshed with the driven gear; z is the number of teeth of the driven gear.

The deflector rod is arranged on the driving gear through a socket head cap screw.

The stop block is installed on the driven gear through threads.

The number of the stoppers of the driven gear is multiple.

The invention has the beneficial effects that: the driving lever and the stop block are adopted to guide the driven gear to pre-rotate and avoid the collision area of the two tooth tops, so that the driven gear is successfully meshed with the driving incomplete gear, the service life of the gear is prolonged, and potential safety hazards are eliminated.

Drawings

FIG. 1 is a schematic structural view of an automatic meshing device for an incomplete gear with position adjustment according to the present invention;

FIG. 2 is a structural view of a driving gear of an automatic engaging device of an incomplete gear with position adjustment according to the present invention;

FIG. 3 is a view showing a construction of a driven gear of an automatic engaging apparatus of an incomplete gear with position adjustment according to the present invention;

FIG. 4 is a schematic diagram of the lever stopper guiding pre-rotation of the automatic partial gear meshing device with position adjustment according to the present invention;

FIG. 5 is a schematic view showing the engagement of gears of an automatic partial gear engagement device with position adjustment according to the present invention;

FIG. 6 is a schematic diagram of the disengagement of the shift lever stopper of the automatic partial gear meshing device with position adjustment according to the present invention;

fig. 7 is a gear disengagement diagram of an automatic partial gear engagement device with position adjustment according to the present invention.

In the figure, 1 is a driving gear, 2 is a driving lever, 3 is a stop block, 4 is a driven gear, and 5 is a socket head cap screw.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

The utility model provides a take incomplete gear automatic meshing device of position adjustment, the structure is shown in figure 1, including driving gear 1 and driven gear 4, driving gear 1 is incomplete gear, and a terminal surface of driving gear 1 is provided with driving lever 2, and a terminal surface of driven gear 4 is provided with dog 3, and driving lever 2 is located same one side with dog 3, and when driving gear 1 and driven gear 4 got into the meshing, driving lever 2 contacted with dog 3.

The driving lever 2 is arranged on the driving gear 1 through a socket head cap screw 5 or other methods, and the stop block 3 is arranged on the driven gear 4 through threads or other methods.

As shown in fig. 4, immediately before the gears are engaged, the shift lever 2 and the stopper 3 are brought into contact in advance, so that the driven gear 4 has a pre-rotation to prevent the two tooth tops from colliding with each other.

As shown in fig. 5, the driven gear 4 is engaged with the driving gear 1 smoothly through pre-rotation.

As shown in fig. 6, after the driving gear 1 and the driven gear 4 are smoothly engaged, the stopper 3 and the shift lever 2 are disengaged.

As shown in fig. 7, after the driving gear 1 and the driven gear 4 are disengaged, the driving gear 1 continues to rotate, and the driven gear 4 returns to the vicinity of the predetermined position by the external force, thereby achieving the intermittent reciprocating motion.

When the preset position of the driven gear 4 is changed in a small range, the device can adjust the position of the driven gear 4 through the guiding pre-rotation of the deflector rod 2 and the stop block 3, and ensures smooth meshing. When the driven gear 4 is arbitrarily varied within a range of 360 degrees, a plurality of stoppers 3 may be provided on the driven gear 4, and the stopper 3 may be installed at a side of each tooth.

The stop 3 is arranged on the side surface of any one tooth of the driven gear 4, and the distance from the mounting position of the stop 3 to the center of the driven gear 4 is a reference circle radius.

The deflector rod 2 is arranged on the outer side of one of the two outer side teeth of the driving gear 1, and a tooth space angle is formed between the installation position of the deflector rod 2 and the outer side teeth, wherein the tooth space angle is an alpha angle.

As shown in FIG. 4, the angle ∠ BAD between the shift lever and the horizontal direction when the shift lever 2 and the stopper 3 are just in contact is β, the length AC of the shift lever 2 is L, and the shortest length AB of the shift lever for ensuring the normal operation of the device is L₁The length of the extension BC of the shift lever 2 is L₂The empirical formula for the length L of the shift lever 2 is:

in the formula (1), L₁β is the angle ∠ BAD between the shift lever and the horizontal direction when the shift lever 2 and the stop 3 are just contacted, and the length of the shift lever is extended to ensure the stable contact between the shift lever 2 and the stop 3, and the extension part L is₂M is the module of the driving gear 1 and the driven gear 4, and the module of the two gears is the same.

The included angle beta between the deflector rod and the horizontal direction when the deflector rod 2 is just contacted with the stop block 3 is as follows:

β≈1.4*(360/Z)° (2)

in the formula 2, the first step is,

a＝M*Z (3)

in the formulas (2) and (3), a is the center distance when the driving gear 1 is meshed with the driven gear 4; z is the number of teeth of the driven gear 4.

The invention relates to an automatic meshing device of an incomplete gear with position adjustment, which comprises the following working processes:

before driving gear 1 and driven gear meshing 4, lie in driving gear 1 on the driving gear 2 in the rotatory in-process in advance with the dog 3 contact on the driven gear 4 to promote driven gear 4 and have to produce one and rotate in advance, the position of adjustment driven gear 4 guarantees the gear meshing smoothly. After the driving gear 1 and the driven gear 4 are smoothly meshed, the deflector rod 2 is separated from the stop block 3, after the driving gear 1 and the driven gear 4 are meshed for one time, the driving gear 1 continues to rotate to prepare for next meshing, the driven gear 4 returns to the position near the preset position under the action of external force to prepare for next meshing movement, and therefore reciprocating movement of incomplete gears is achieved, two tooth tops are prevented from colliding, the service life of the gears is prolonged, and potential safety hazards are eliminated.