Shaft output planet carrier with oil storage function

Abstract

The utility model relates to the technical field of vertical mill speed reducer parts, in particular to an output shaft planet carrier with an oil storage function, which is characterized in that an output shaft is arranged in the center of the planet carrier along the vertical direction; a plurality of planet wheels are mounted in the circumferential direction of the planet carrier; a sun gear is mounted in the center of the interior of the planet carrier, and the sun gear is meshed with a plurality of planet gears in the circumferential direction; an oil nozzle is arranged above an output shaft bearing of the output shaft; an oil storage groove is formed in the upper surface of the planet carrier, and inclined holes penetrating through the planet carrier are distributed in the side, close to the planet carrier, of the oil storage groove in the circumferential direction. In order to solve the problem that an existing vertical mill planetary speed reduction structure is difficult to lubricate the meshing portion of a sun gear and a planet gear wrapped inside, an oil storage groove and an inclined hole pointing to the meshing portion of the sun gear and the planet gear inside from the oil storage groove are formed in a planet carrier. Lubricating oil flows into the meshing portion of the sun gear and the planet gear through the inclined holes to achieve lubrication, and the problem that the sun gear wrapped in the planet carrier is not fully lubricated is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical mill reducer parts, in particular to an output shaft planetary carrier with an oil storage function. Background Art

[0002] Vertical mill reducers are ideal large-scale grinding equipment, widely used in industries such as metallurgy, cement, electricity, chemicals, and non-metallic minerals. They integrate crushing, drying, grinding, and grading and conveying, offering high production efficiency and capable of grinding lump, granular, and powdered materials into desired powders. Furthermore, they can facilitate large-scale, centralized powder processing.

[0003] In the prior art, there are vertical mill reducer structures that achieve deceleration and torque amplification based on planetary gear structures. For example, Chinese patent CN201610233140.2 discloses a differential planetary vertical mill gearbox, which includes a housing, an input bevel gear pair, and a two-stage planetary gear train. The connection relationship between them is as follows: the driving bevel gear on the input shaft is meshed with the driven bevel gear on the driven bevel gear shaft; the primary planetary gear is mounted on the output turret through a primary cantilever planetary pin shaft; the secondary fixed cantilever planetary pin shaft is fixed to the housing, and the secondary planetary gear is supported on the secondary fixed cantilever planetary pin shaft through bearings; the driven bevel gear shaft is positioned and connected to the primary sun gear through a drum gear sleeve, the primary inner ring gear is connected to the secondary sun gear through a primary flexible torque coupling plate, the floating secondary inner ring gear is connected to the output turret through a secondary flexible torque coupling plate, and a thrust sliding bearing is provided at the junction of the output turret and the housing; the primary cantilever planetary pin shaft and the floating secondary inner ring gear jointly drive the output turret to transmit torque.

[0004] However, during actual implementation, the inventors discovered that in this type of device, because the sun gear is enclosed within the planetary gears and the planet carrier, lubrication is poor when the sun gear and planetary gears mesh. This results in unstable operation of the existing vertical mill reducer and a high maintenance frequency, which, to a certain extent, limits the performance of the vertical mill reducer. Utility Model Content

[0005] In view of the above problems existing in the prior art, a planetary carrier with an oil storage function is provided.

[0006] The specific technical solutions are as follows:

[0007] An output shaft planetary carrier with an oil storage function, comprising a planetary carrier, an output shaft, a sun gear, and planetary gears;

[0008] The output shaft is mounted vertically at the center of the planet carrier;

[0009] A plurality of planetary gears are mounted on the circumference of the planetary carrier;

[0010] The sun gear is installed at the inner center of the planet carrier, and the sun gear is engaged with a plurality of the planet gears in the circumferential direction;

[0011] An oil spray nozzle is provided above the output shaft bearing of the output shaft;

[0012] An oil storage tank is provided on the upper surface of the planet carrier. The oil storage tank has inclined holes penetrating the planet carrier distributed along the circumferential direction on a side close to the planet carrier.

[0013] On the other hand, the lower end of the inclined hole points to the meshing position of the sun gear and the planet gear.

[0014] On the other hand, the depth of the oil storage tank is greater than 3 mm.

[0015] On the other hand, the center line of the inclined hole, the center line of the output shaft and the center line of the planetary gear are located on the same plane.

[0016] On the other hand, the number of the inclined holes matches the number of the planetary gears.

[0017] On the other hand, the sun gear shaft of the sun gear extends from below the planet carrier and is connected to an external driving device.

[0018] On the other hand, the top end of the output shaft is connected with an upper cover.

[0019] On the other hand, a flange is provided at the top end of the output shaft, and the flange is connected to an external grinding device.

[0020] On the other hand, the fuel injector is connected to the fuel pipe.

[0021] On the other hand, there are at least three planetary gears.

[0022] The above technical solution has the following advantages or beneficial effects:

[0023] To address the difficulty in lubricating the meshing area between the sun gear and the planet gears, which are enclosed within the planetary gear reducer structure of the existing vertical mill, this solution provides an oil reservoir on the planetary carrier and an inclined hole pointing from the reservoir toward the meshing area between the sun gear and the planet gears. When the oil nozzle sprays lubricating oil onto the output shaft bearing for lubrication, the oil drips through the output shaft bearing into the oil reservoir, then flows through the inclined hole to lubricate the meshing area between the sun gear and the planet gears, thus avoiding the problem of insufficient lubrication of the sun gear enclosed within the planetary carrier. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The embodiments of the present invention will be described more fully with reference to the accompanying drawings, which are for illustration and description only and are not intended to limit the scope of the present invention.

[0025] Figure 1 This is a schematic cross-sectional view of an embodiment of the present invention in the front view direction;

[0026] Figure 2 This is a schematic diagram of a top view of an embodiment of the present utility model; DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0030] The utility model includes:

[0031] A planetary carrier with oil storage function, such as Figure 1 As shown, it includes a planet carrier 1, an output shaft 8, a sun gear 3, and planet gears 7;

[0032] The center of the planet carrier 1 is provided with an output shaft 8 in the vertical direction;

[0033] A plurality of planetary gears 7 are mounted on the circumference of the planet carrier 1;

[0034] A sun gear 3 is mounted at the center of the planet carrier 1, and the sun gear 3 meshes with a plurality of planet gears 7 arranged around the planet carrier 1.

[0035] An oil spray nozzle 21 is provided above the output shaft bearing 81 of the output shaft 8;

[0036] An oil storage tank 6 is provided on the upper surface of the planet carrier 1 . The oil storage tank 6 has inclined holes 4 penetrating the planet carrier 1 distributed along the circumferential direction on one side close to the output shaft 8 .

[0037] Specifically, to address the difficulty in lubricating the meshing area between the sun gear and the planet gears enclosed within the existing vertical mill planetary reduction structure, this embodiment provides an oil reservoir 6 and an inclined hole 4 pointing from the oil reservoir 6 toward the meshing area between the sun gear 3 and the planet gears 7. When the oil nozzle 21 sprays lubricating oil onto the output shaft bearing 81 for lubrication, the oil drips through the output shaft bearing 81 into the oil reservoir 6 and then flows through the inclined hole 4 into the meshing area between the sun gear 3 and the planet gear 7 for lubrication, thus avoiding the problem of insufficient lubrication of the sun gear 3 enclosed within the planet carrier 1.

[0038] In a specific implementation process, the above-mentioned output shaft planetary carrier is provided in the vertical mill reducer as a part of the vertical mill reducer.

[0039] Among them, the output shaft 8 is installed above the planetary carrier 1, and the sun gear 3 is wrapped inside.

[0040] The rotation axis center of the sun gear 3 coincides with the rotation axis center of the planet carrier 1 and the rotation axis center of the output shaft 8. The sun gear shaft of the sun gear 3 extends from the bottom of the planet carrier 1 and is connected to an external drive device.

[0041] The driving device may be a vertically arranged driving motor, or may be a speed reduction reversing mechanism formed by a combination of bevel gears and bevel gears.

[0042] The sun gear 3 meshes with a plurality of planetary gears 7 to realize power transmission, wherein, as Figure 2 As shown, the number of the planetary gears 7 is preferably three or more, and they are distributed around the sun gear 3 in a circumferential direction.

[0043] The planetary wheel shaft 5 is rotatably mounted on the planetary carrier 1 through bearings, sleeves, etc. to drive the planetary carrier 1 and the output shaft 8 to rotate.

[0044] A flange is provided at the top end of the output shaft 8, and the flange is connected to an external grinding device through bolts to realize the power output process.

[0045] In addition, an upper cover is sleeved on the top of the output shaft 8. The middle part of the upper cover has a hole and is connected to the output shaft 8 by bolts. A guide groove is provided under the edge of the upper cover, and the guide groove cooperates with the guide rail on the upper edge of the external shell. When the upper cover rotates driven by the output shaft 8, the guide groove slides in the guide rail.

[0046] At the same time, a supporting platform is provided on the inner side of the guide rail edge of the outer shell. The lower end surface of the upper cover is placed on the supporting platform and contacts it through lubrication, so that the lower end surface can rotate while being supported by the supporting platform.

[0047] Furthermore, the output shaft 8 and the external housing are positioned via an output shaft bearing 81 to enable the output shaft 8 to rotate.

[0048] An oil nozzle 21 is provided above the output shaft bearing 81 , and the oil nozzle 21 is connected to an external oil pump and an oil storage tank through an oil pipe 2 . The oil pump draws lubricating oil from the oil storage tank and sprays it through the oil pipe 2 to the oil nozzle 21 to lubricate the output shaft bearing 81 .

[0049] After the lubricating oil seeps out of the shaft bearing, it drips into the oil storage tank 6 on the upper surface of the planet carrier 1, and then passes through the planet carrier 1 through the inclined hole 4 to reach the meshing part of the sun gear 3 and the planet gear 7 for lubrication.

[0050] In one embodiment, the lower end of the inclined hole 4 points to the meshing position between the sun gear 3 and the planet gear 7 .

[0051] Specifically, considering the actual sizes of the sun gear 3, the planetary gear 7 and the output shaft bearing 81, in order to achieve a better oil filling effect, in this embodiment, the inclined hole 4 is adjusted to point from the oil storage tank 6 toward the center of the circle, so that the lower end of the inclined hole 4 finally points to the inclined through hole at the meshing part of the sun gear 3 and the planetary gear 7 to achieve a better oil filling effect.

[0052] In one embodiment, the depth of the oil reservoir is greater than 3 mm.

[0053] Specifically, in order to achieve better storage and flow of the lubricating oil, in this embodiment, the depth of the oil storage tank 6 is set to be greater than 3 mm to achieve better fluidity.

[0054] In one embodiment, the center line of the inclined hole 4 , the center line of the output shaft 8 , and the center line of the planetary gear 7 are located on the same plane.

[0055] Specifically, in order to ensure that the lubricating oil flowing out of the inclined hole 4 accurately flows into the meshing portion between the sun gear 3 and the planetary gear 7, in this embodiment, the center line of the inclined hole 4, the center line of the output shaft 8 and the center line of the planetary gear 7 are located on the same plane, so that the inclined hole 4 is aligned with the meshing portion between each planetary gear 7 and the sun gear 3.

[0056] The above are only preferred embodiments of the present invention and do not limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A planetary carrier with oil storage function, characterized in that: Including planet carrier, output shaft, sun gear and planet gear; The output shaft is mounted vertically at the center of the planet carrier; A plurality of planetary gears are mounted on the circumference of the planetary carrier; The sun gear is installed at the inner center of the planet carrier, and the sun gear is engaged with a plurality of the planet gears in the circumferential direction; An oil spray nozzle is provided above the output shaft bearing of the output shaft; An oil storage tank is provided on the upper surface of the planetary carrier. The oil storage tank has inclined holes penetrating the planetary carrier distributed along the circumferential direction on a side close to the output shaft.

2. The planetary carrier with an output shaft according to claim 1, characterized in that: The lower end of the inclined hole points to the meshing position of the sun gear and the planet gear.

3. The planetary carrier with an output shaft according to claim 1, characterized in that: The depth of the oil storage tank is greater than 3 mm.

4. The planetary carrier with an output shaft according to claim 1, characterized in that: The inclined hole center line of the inclined hole, the output shaft center line of the output shaft and the planetary wheel center line of the planetary wheel are located on the same plane.

5. The planetary carrier with an output shaft according to claim 1, characterized in that: The number of the inclined holes matches the number of the planetary gears.

6. The planetary carrier with an output shaft according to claim 1, characterized in that: The sun gear shaft of the sun gear extends from the bottom of the planet carrier and is connected to an external driving device.

7. The planetary carrier with an output shaft according to claim 1, characterized in that: The top end of the output shaft is connected with an upper cover.

8. The planetary carrier with an output shaft according to claim 1, characterized in that: The top end of the output shaft is provided with a flange, and the flange is connected to an external grinding device.

9. The planetary carrier with an output shaft according to claim 1, characterized in that: The fuel injection nozzle is connected to the fuel delivery pipe.

10. The planetary carrier with an output shaft according to claim 1, characterized in that: There are at least three planetary gears.

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