CN103104682B - Planetary transmission system axial locating regulating device - Google Patents

Abstract

An axial positioning adjustment device for a planetary transmission system, the device includes a floating first-stage planetary carrier (4) and a floating second-stage sun gear (8) that are meshed together in a coaxial manner through internal and external teeth, and are arranged on the floating The planet carrier adjustment sleeve (1) at the end of the primary planet carrier (4), the sun gear adjustment sleeve (11) set at the end of the floating secondary sun gear (8), and the sun gear adjustment sleeve and the box body Disc spring (12) between, characterized by: the mating end of the planetary carrier adjustment sleeve (1) and the floating primary planetary carrier (4), and the sun gear adjustment sleeve (11) and the floating secondary The mating end of the sun gear (8) is a spherical toroidal structure; the mating end of the floating primary planetary carrier (4) and the planetary carrier adjustment sleeve (1), and the floating secondary sun gear (8) and the sun The mating ends of the wheel adjustment sleeve (11) are all tapered torus structures.

Description

Planetary transmission system axial positioning adjustment device

technical field

The invention relates to the field of planetary gear transmission, in particular to an axial positioning adjustment device for a planetary transmission system suitable for the axial positioning and adjustment of NGW two-stage and above planetary transmissions. The device is especially suitable for helical planetary gear transmissions.

Background technique

Planetary gear transmission adopts several planetary gears to transmit load at the same time, so that the power can be divided, and the structure is compact and the volume is small. At the same time, due to the complex structure, the difficulty of manufacture and installation increases. Manufacturing and installation errors, as well as the influence of part deformation and temperature, etc., cause the load transmitted by each planetary wheel to appear unbalanced. The planetary carrier and the sun gear are often used to float, which can effectively balance the load of each planetary gear, and the structure is simple, which improves the difficulty of manufacturing and installation.

When the planetary carrier and the sun gear are in the process of equal load, the axis will be deflected, especially for the helical planetary gear transmission, there will be axial force, and in the case of positive and negative rotation, the gear will move left and right phenomenon, the noise of the gearbox will increase. This requires that the positioning sleeve can also play a positioning role when the axis is deflected, and must also be able to bear a certain axial force.

Contents of the invention

The purpose of the present invention is to provide an axial positioning adjustment device suitable for planetary gear transmission, especially for helical planetary gear transmission, aiming at the shortcomings of the above-mentioned prior art.

The purpose of the present invention is achieved through the following technical solutions:

The axial positioning adjustment device of the planetary transmission system of the present invention includes a floating primary planet carrier and a floating secondary sun gear that are meshed together in a coaxial manner through internal and external teeth, and the planet carrier arranged at the end of the floating primary planet carrier The adjustment sleeve, the sun gear adjustment sleeve arranged at the end of the floating secondary sun gear, and the disc spring installed between the sun gear adjustment sleeve and the box body, wherein: the planet carrier adjustment sleeve and the floating primary planet The mating end of the carrier, and the mating end of the sun gear adjusting sleeve and the floating secondary sun gear are spherical torus structures; the mating end of the floating primary planetary carrier and the planetary carrier adjusting sleeve, and the floating secondary sun gear The mating ends of the wheel and the sun gear adjustment sleeve are all conical torus structures; that is to say: the planet carrier adjustment sleeve and the floating primary planet carrier, the sun gear adjustment sleeve and the floating secondary sun gear are all made of balls. The annulus and the conical annulus are butted together in a mutual cooperation manner.

In the present invention, the floating primary planetary carrier and the floating secondary sun gear interact with each other through the inner straight teeth of the planet carrier processed at the connection end of the floating primary planet and the drum-shaped outer teeth of the sun gear processed at the connection end of the floating secondary sun gear. bite together.

More specifically, the connecting ends of the planet carrier adjusting sleeve and the sun gear adjusting sleeve and the first-stage planet carrier and the second-stage sun gear respectively have a spherical torus structure with a spherical cross-section; The mating ends of the planetary carrier adjustment sleeve and the sun gear adjustment sleeve are both conical torus structures at 45 degrees; the disc spring is installed between the sun gear adjustment sleeve and the box, and the disc spring adopts standard parts. There are circular grooves for positioning the outer circle of the disc springs on the adjusting sleeve and the box body, and the number of disc springs can be increased or decreased according to specific conditions.

The present invention has the following beneficial effects:

When the planetary gear transmission is working, the floating of the first-stage planetary carrier and the second-stage sun gear ensures the load balance of each planetary gear. The spherical contact of the adjustment sleeve, the large chamfer at one end of the secondary sun gear is in contact with the spherical surface of the sun gear adjustment sleeve, which can always support the positioning within a certain angular displacement; the drum-shaped tooth connection is used between the planet carrier and the sun gear, allowing the two The axis has a large angular displacement and can withstand large torque and impact loads. Belleville springs can ensure axial reset, reducing vibration and noise when the gearbox is working.

Description of drawings

Fig. 1 is the front view of the structure of the present invention.

Fig. 2 is a schematic diagram of point I in Fig. 1 .

Fig. 3 is a schematic diagram of point II in Fig. 1 .

Numbers in Figures 1 to 3: 1 is the planet carrier adjustment sleeve, 2 is the spherical torus structure of the planet carrier adjustment sleeve, 3 is the conical torus structure of the planet carrier (large chamfer), 4 is the first-level planet carrier, 5 6 is the retaining ring, 7 is the drum-shaped outer tooth of the sun gear, 8 is the second-level sun gear, 9 is the cone ring structure of the sun gear (large chamfer), 10 is the adjustment sleeve of the sun gear Spherical torus structure, 11 is a sun gear adjusting sleeve, and 12 is a butterfly spring.

Detailed ways

The present invention is described in further detail below in conjunction with embodiment (accompanying drawing):

As shown in Figures 1, 2, and 3, the planetary drive system axial positioning adjustment device of the present invention includes a floating primary planet carrier 4 and a floating secondary sun gear 8 that are meshed together in a coaxial manner through internal and external teeth. The planet carrier adjustment sleeve 1 at the end of the floating primary planet carrier 4, the sun gear adjustment sleeve 11 arranged at the end of the floating secondary sun gear 8, and the disc-shaped sun gear adjustment sleeve installed between the sun gear and the box Spring 12, wherein: the mating end of the planet carrier adjusting sleeve 1 and the floating primary planet carrier 4, and the mating end of the sun gear adjusting sleeve 11 and the floating secondary sun gear 8 are spherical toroidal structures 2, 10 The mating ends of the floating first-stage planet carrier 4 and the planet carrier adjusting sleeve 1, and the mating ends of the floating secondary sun gear 8 and the sun gear adjusting sleeve 11 are all conical torus structures 3, 9 (see Fig. 2 , 3); the floating primary planetary carrier 4 and the floating secondary sun gear 8 are processed through the straight teeth 5 in the planetary carrier at the floating primary planetary connection end and processed at the floating secondary sun gear connection end The drum-shaped external teeth 7 of the sun gear mesh with each other; a circular groove for positioning the outer circle of the disc spring is arranged on the sun gear adjusting sleeve and the box body, and the number of disc springs increases or decreases according to specific conditions.

More specifically, the connecting ends of the planet carrier adjusting sleeve and the sun gear adjusting sleeve and the first-stage planet carrier and the second-stage sun gear respectively have a spherical torus structure with a spherical cross-section; The mating ends of the planet carrier adjusting sleeve and the sun gear adjusting sleeve are all conical torus structures at 45 degrees; that is to say: the planet carrier adjusting sleeve and the floating primary planet carrier, the sun gear adjusting sleeve and the floating The sun gears are all butted together by the cooperation of the spherical torus and the cone torus.

The working principle of the present invention is as follows:

When working, when the axis of the first-stage planetary carrier 4 is deflected, the large chamfer 3 conical surface can rotate around the spherical surface 2 of the planetary carrier adjustment sleeve 1; the inner straight teeth 5 on the first-stage planetary carrier 4 and the second-stage sun gear The drum-shaped teeth 7 on the 8 are meshed, and the drum-shaped teeth allow the primary planet carrier 4 and the secondary sun gear 8 to have a large angular displacement. When the two-week line is deflected, they can rotate around the drum-shaped teeth 7; the sun gear There is a spherical surface 10 on the adjustment sleeve 11, and a large chamfer 9 is arranged on the secondary sun gear 8. When the axis of the secondary sun gear 8 is deflected, the conical surface of the large chamfer 9 can rotate around the spherical surface 10 of the sun gear adjustment sleeve 11; The disc spring 12 is installed between the sun gear adjustment sleeve 11 and the box body, and a circular groove for positioning the outer circle of the disc spring is arranged on the sun gear adjustment sleeve 11 and the box body, and the number of disc springs can be determined according to Specific circumstances increase or decrease.

When the planetary gear transmission is working, the floating of the primary planetary carrier 4 and the secondary sun gear 8 ensures the load balance of each planetary gear, and at the same time the axis of the primary planetary carrier 4 and the secondary sun gear 8 will be deflected, at this time , the first-level planetary carrier 4 with large chamfer 3 cones can rotate around the spherical surface 2 of the planetary carrier adjustment sleeve 1, the first-level planetary carrier 4 can rotate around the second-level sun gear 8 drum-shaped teeth 7, and the second-level sun gear 8 large inverted The angle 9 conical surface can rotate around the spherical surface 10 of the sun gear adjustment sleeve 11, so that it can always play the role of positioning and adjustment when working in this way, and there will be a certain amount of axial movement when deflection occurs, which can be passed through the butterfly spring 12 The compression and reset of the whole device ensure that there will be no gap in the whole device, which reduces the vibration and noise of the gearbox when it is working.

Claims (3)

1. An axial positioning adjustment device for a planetary transmission system, the device includes a floating primary planetary carrier (4) and a floating secondary sun gear (8) that are meshed together in a coaxial manner through internal and external teeth, and are set on The planet carrier adjustment sleeve (1) at the end of the floating primary planet carrier (4), the sun gear adjustment sleeve (11) arranged at the end of the floating secondary sun gear (8), and the sun gear adjustment sleeve and The disc spring (12) between the boxes is characterized in that: the mating end of the planet carrier adjustment sleeve (1) and the floating primary planet carrier (4), and the sun gear adjustment sleeve (11) and the floating The mating end of the secondary sun gear (8) is a spherical toroidal structure; the mating end of the floating primary planetary carrier (4) and the planetary carrier adjustment sleeve (1), and the floating secondary sun gear (8) The mating end with the sun gear adjusting sleeve (11) is a tapered torus structure. 2. The axial positioning adjustment device of the planetary transmission system according to claim 1, characterized in that: the floating primary planet carrier (4) and the floating secondary sun gear (8) are connected by processing the floating primary planet The inner straight teeth of the planet carrier at the end and the drum-shaped outer teeth of the sun gear processed at the connecting end of the floating secondary sun gear mesh with each other. 3. The axial positioning adjustment device of the planetary transmission system according to claim 1, characterized in that: a circular groove for positioning the outer circle of the disc spring is opened on the sun gear adjustment sleeve and the box body.