CN216343857U - Structure for reducing abrasion between end face gasket of planet wheel and planet carrier body in planetary reducer - Google Patents

Abstract

The utility model discloses a structure for reducing abrasion between a planet wheel end face gasket and a planet carrier body in a planetary speed reducer, which comprises a planet carrier, a planet shaft hole arranged on the planet carrier, a planet shaft with the end part installed in the planet shaft hole, a planet wheel installed on the planet shaft, and a gasket which is installed between the planet wheel end face and the planet carrier and is sleeved outside the planet shaft, wherein a sinking platform capable of placing the gasket is arranged on the planet carrier at the periphery of the planet shaft hole, a limit notch is arranged on the side wall of the sinking platform, a limit angle capable of placing the limit notch is arranged at the periphery of the gasket, and the depth of the sinking platform is smaller than the thickness of the gasket. The novel planet carrier has the advantages that the gasket and the planet carrier cannot rotate relatively, and abrasion between the gasket and the planet carrier can be avoided; simultaneously, can reduce because of the harm that the friction brought between gasket and the planet wheel.

Description

Structure for reducing abrasion between end face gasket of planet wheel and planet carrier body in planetary reducer

Technical Field

The utility model relates to a lubrication mechanism of a planetary speed reducer, in particular to a structure for reducing abrasion between a planet wheel end face gasket and a planet carrier body in the planetary speed reducer, and belongs to the technical field of speed reducer lubrication.

Background

The planetary reducer has compact structure, large reduction ratio range, wide application range and can realize the functions of reducing speed and increasing torque.

As shown in fig. 1 and 2, the planetary reducer includes a sun gear 5, a planetary assembly, and an inner ring gear.

The conventional planetary assembly comprises a planet carrier 1, planet wheels 3 (3 to 4), a planet shaft 4 (the same number as the planet wheels), a planet washer 2, a needle bearing and a fixed pin. The planet carrier 1 is cage type, the middle is a sun wheel space 101, the periphery of the sun wheel space 101 is a planet wheel space 102 with equal arc length, and planet shaft holes 103 are respectively arranged on the planet carrier 1 above and below (according to the direction of the view 2) the planet wheel space 102. The carrier 1 above and below (in the direction of fig. 2) the sun gear space 101 is provided with a sun gear hole 104.

During assembly, the planet wheel 3 is sleeved in the middle of the planet shaft 4 through a needle bearing, two ends of the planet shaft 4 are respectively installed in the planet shaft holes 103 above and below the planet carrier 1, and a planet gasket 2 sleeved on the planet shaft 4 is respectively arranged between the upper end and the lower end of the planet wheel 3 and the planet carrier 1.

The axle core of the planet axle 4 is provided with an axial oil hole 401 for introducing lubricating oil, the middle part of the planet axle 4 is provided with a radial oil hole 402, and the radial oil hole 402 leads the axial oil hole 401 to be communicated with the needle roller space 6 of the needle roller bearing. Lubricating oil outside the carrier 1 enters the needle space 6 of the needle bearing through the axial oil hole 401 and the radial oil hole 402 to lubricate the needle bearing.

The disadvantages of the planetary assembly are: in the operation process, because terminal surface frictional force can drive planet gasket 2 and rotate when planet wheel 3 rotates, planet gasket 2 rotates and leads to producing relative motion and friction with planet carrier 1, because planet carrier 1 hardness is lower, general planet carrier 1 wears out at first to produce iron fillings, pollute lubricating oil, even cause the influence to bearing and gear operation, lead to the condition of abnormal wear and jamming.

SUMMERY OF THE UTILITY MODEL

The technical problems to be solved by the utility model are mainly as follows: how to avoid friction between the planet pad 2 and the planet carrier 1.

The utility model comprises the following steps:

the utility model provides a reduce structure of planet wheel terminal surface gasket and planet support body wearing and tearing among planetary reducer, includes the planet carrier, sets up the planet shaft hole on the planet carrier, and the planet axle in the planet shaft hole is installed to the tip, installs the epaxial planet wheel of planet, installs the suit between planet wheel terminal surface and planet carrier at the epaxial gasket of planet, sets up the heavy platform that can put into the gasket on the planet carrier of planet shaft hole periphery, heavy platform lateral wall is equipped with spacing breach the periphery of gasket is equipped with the spacing angle that can put into spacing breach, the degree of depth of heavy platform is less than the thickness of gasket.

Furthermore, the limiting notch is communicated with a sun shaft position hole of the sun wheel.

Furthermore, an oil guide groove is formed in the end face, in contact with the gasket, of the planet wheel, and one end of the oil guide groove is communicated with a needle roller space of the needle roller bearing, located between the planet wheel and the planet shaft.

Has the advantages that:

1. through the heavy platform that can put into the gasket that sets up on the planet carrier of planet axle hole periphery, at the spacing breach that heavy platform lateral wall set up, the spacing angle that can put into in the spacing breach that sets up in the periphery of gasket can put into heavy platform with the gasket, and the spacing angle of gasket also is arranged in the spacing breach that sinks the platform for the gasket can not rotate in sinking the platform. Therefore, the gasket and the planet carrier cannot rotate relatively, and abrasion between the gasket and the planet carrier can be avoided.

2. Through set up on the terminal surface of planet wheel with the gasket contact and lead oil groove to the messenger leads oil groove's one end and is linked together with needle bearing's kingpin space, can make the lubricating oil that the kingpin space possessed get into between gasket and the planet wheel through leading oil groove, thereby reduces because of the harm that the friction brought between gasket and the planet wheel.

Drawings

FIG. 1 is a schematic perspective view of the planet carrier assembly with planet and sun gears;

FIG. 2 is a perspective view of the planet carrier;

FIG. 3 is a view taken along line A-A of FIG. 2;

FIG. 4 is a schematic plan view of the gasket;

FIG. 5 is a schematic plan view of FIG. 3 with the gasket installed;

fig. 6 is a schematic plan view of the planet;

fig. 7 is a partial schematic axial cross-sectional view of the carrier, in which arrows a, b, c indicate the flow of the lubricating oil.

In the figure: 1. a planet carrier; 101. a sun gear space; 102. a planet wheel space; 103. a planet shaft hole; 104.

a sun shaft position hole; 105. sinking a platform; 106. a limiting notch; 2. a gasket; 201. limiting the angle; 3. a planet wheel; 301. an oil guide groove; 4. a planet shaft; 401. an axial oil hole; 402. a radial oil hole; 5. a sun gear; 6. the needle roller space.

Detailed Description

The utility model is further described with reference to the accompanying drawings in which:

as shown in fig. 1 to 5, a structure for reducing wear of a planetary gear end face gasket and a planetary carrier body in a planetary reducer comprises a planetary carrier 1, a planetary shaft hole 103 arranged on the planetary carrier 1, a planetary shaft 4 with an end part installed in the planetary shaft hole 103, a planetary gear 3 installed on the planetary shaft 4, a gasket 2 installed between the end face of the planetary gear 3 and the planetary carrier 1 and sleeved outside the planetary shaft 4, a sinking platform 105 capable of placing the gasket 2 is arranged on the planetary carrier 1 at the periphery of the planetary shaft hole 103, a limit notch 106 is arranged on the side wall of the sinking platform 105, a limit angle 201 capable of placing the limit notch 106 is arranged at the periphery of the gasket 2, the depth of the sinking platform 105 is smaller than the thickness of the gasket 2, and the gasket 2 and the end face of the planetary gear 3 can be kept in contact. When in use, the gasket 2 is positioned in the sinking platform 105, and the limiting angle 201 of the gasket 2 is positioned in the limiting notch 106 of the sinking platform 105, so that the gasket 2 cannot rotate in the sinking platform 105. Thus, relative rotation between the spacer 2 and the carrier 1 is prevented, and abrasion between the spacer 2 and the carrier 1 can be avoided.

Because the contact is kept between the pad 2 and the end face of the planet wheel 3, after the pad 2 is limited to rotate, the pad 2 cannot rotate along with the rotation of the planet wheel 3, and therefore the friction between the pad 2 and the end face of the planet wheel 3 is enhanced before being improved. Although the material hardness of gasket 2 and planet wheel 3 is big, wear-resisting, the wearing and tearing still exist at all, and the increased friction between gasket 2 and planet wheel 3 also makes the temperature rise. In order to reduce the risk of increased friction between the washer 2 and the planet wheel 3, the following measures are further taken:

as shown in fig. 6 and 7, an oil guide groove 301 is provided on an end surface of the planetary gear 3 contacting the spacer 2, and one end of the oil guide groove 301 communicates with the needle roller space 6 of the needle roller bearing located between the planetary gear 3 and the planetary shaft 4. The needle space 6 also has lubricating oil which makes it possible to obtain lubricating oil between the washer 2 and the planet wheel 3 via the oil guide groove 301.

The needle space 6 of the needle bearing has a lubricant in the following way: the axle core of the planet axle 4 is provided with an axial oil hole 401 for introducing lubricating oil, the middle part of the planet axle 4 is provided with a radial oil hole 402, and the radial oil hole 402 leads the axial oil hole 401 to be communicated with the needle roller space 6 of the needle roller bearing. Lubricating oil outside the carrier 1 enters the needle space 6 of the needle bearing through the axial oil hole 401 and the radial oil hole 402 to lubricate the needle bearing.

As shown in fig. 2, 3 and 5, the limit notch 106 is communicated with the sun axis position hole 104 of the sun wheel. Therefore, lubricating oil in the meshing area of the gear of the sun wheel 5 and the gear of the planet wheel 3 can flow into the sinking platform 105 through the limiting notch 106, so that the lubricating oil is obtained between the gasket 2 and the planet wheel 3, and a boring and milling cutter can conveniently extend into the sinking platform from the sun shaft position hole 104 for boring and milling.

The above-described embodiments are intended to illustrate the utility model more clearly and should not be construed as limiting the scope of the utility model covered thereby, any modification of the equivalent should be considered as falling within the scope of the utility model covered thereby.

Claims (3)

1. The utility model provides a reduce structure of planet wheel terminal surface gasket and planet carrier body wearing and tearing among planetary reducer, includes planet carrier (1), sets up planet shaft hole (103) on planet carrier (1), planet axle (4) in planet shaft hole (103) are installed to the tip, planet wheel (3) of installing on planet axle (4), the suit of installing between planet wheel (3) terminal surface and planet carrier (1) is at outer gasket (2) of planet axle (4), its characterized in that: set up heavy platform (105) that can put into gasket (2) on planet carrier (1) of planet shaft hole (103) periphery, heavy platform (105) lateral wall is equipped with spacing breach (106) the periphery of gasket (2) is equipped with spacing angle (201) that can put into spacing breach (106), the degree of depth of heavy platform (105) is less than the thickness of gasket (2).

2. The structure for reducing the abrasion between the planet wheel end face gasket and the planet carrier body in the planetary speed reducer according to claim 1, characterized in that: the limiting notch (106) is communicated with a sun shaft position hole (104) of the sun wheel.

3. The structure for reducing the abrasion between the planet wheel end face gasket and the planet carrier body in the planetary speed reducer according to claim 1, characterized in that: an oil guide groove (301) is formed in the end face, in contact with the gasket (2), of the planet wheel (3), and one end of the oil guide groove (301) is communicated with a needle roller space (6) of a needle roller bearing, which is located between the planet wheel (3) and the planet shaft (4).

Images