CN215720754U - Planet carrier - Google Patents

Abstract

The utility model discloses a planet carrier, which comprises a front web plate and a rear web plate, wherein an even number of rib plates are arranged between the front web plate and the rear web plate, every two rib plates form a rib plate group, a plurality of rib plate groups are uniformly distributed on the circumference, and two rib plates in each rib plate group are connected through a plurality of rib plates distributed along the axial direction; and a plurality of weight reducing parts which are distributed in a staggered way in the circumferential direction and reinforcing parts for mounting the planet shafts are formed on the front web plate and the rear web plate. The planet carrier has the advantages that the plurality of rib plate groups are arranged between the two rib plates, and the original triangular prism structure is replaced by reasonable structural layout, so that the requirements on the deformation and the strength of the planet carrier are met, the weight of the planet carrier is reduced, and the cost performance of the planet carrier is improved; and set up crisscross weight reduction portion that distributes on preceding web and back web, under the condition that does not influence planet carrier overall performance, reduce the whole weight of planet carrier, reduce the material of using, further promoted the price/performance ratio of planet carrier.

Description

Planet carrier

Technical Field

The utility model relates to the technology of a planet carrier, in particular to a planet carrier.

Background

With the continuous development of the wind power industry, the cost performance of the wind power generator set is continuously improved, the speed-up gear box serves as a main transmission structure of the wind power generator set, and the improvement of the cost performance of the gear box is imperative. The weight of the casting and forging piece in the gear box parts accounts for the largest proportion, so that the structure and the machining process of the casting and forging piece are optimized to be the heavier.

At present, the thicknesses of the front web plate and the rear web plate of the planet carrier are consistent, the rib plates are of triangular prism structures, more materials are needed by a casting and forging piece, more areas need to be machined, the production cost is increased, and the planet carrier is low in cost performance.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that the conventional planet carrier needs more materials and needs more processing areas, so that the production cost is increased and the cost performance of the planet carrier is low.

In order to achieve the purpose, the utility model adopts the following technical scheme.

A planet carrier comprises a front web plate and a rear web plate, wherein an even number of rib plates are arranged between the front web plate and the rear web plate, every two rib plates form a rib plate group, the plurality of rib plate groups are uniformly distributed on the circumference, and the two rib plates in each rib plate group are connected through a plurality of rib plates distributed along the axial direction; and a plurality of weight reducing parts which are distributed in a staggered way in the circumferential direction and reinforcing parts for mounting the planet shafts are formed on the front web plate and the rear web plate.

According to the utility model adopting the technical scheme, the rib plate group is arranged between the front web plate and the rear web plate of the planet carrier, the plurality of rib plates are arranged between the two rib plates, and the reasonable structural layout replaces the original triangular prism structure, so that the deformation and strength requirements of the planet carrier are met, the weight of the planet carrier is reduced to a greater extent, and the cost performance of the planet carrier is improved; the front web plate and the rear web plate are provided with the weight reduction parts which are distributed in a staggered mode, the overall weight of the planet carrier is reduced under the condition that the overall performance of the planet carrier is not affected, the used materials are reduced, the planet carrier is integrally formed through casting and forging, the machining area is reduced, the labor hour and the labor cost are saved, and the cost performance of the planet carrier is further improved; and reinforcing parts are arranged on the front web plate and the rear web plate, so that the strength and rigidity of the area are increased, and sufficient strength and rigidity support is provided for mounting the planet shaft.

Preferably, each weight reduction part is correspondingly provided with one rib plate group, and two rib plates in each rib plate group are distributed in a splayed shape with a narrow inner part and a wide outer part. Rib plate and gusset splayed arrange and form stable triangle-shaped structure, for original triangular prism structure, can lighten weight under the prerequisite of not weakening intensity, promote the price/performance ratio of planet carrier.

Preferably, the reinforcing part is fan-shaped, and a plurality of reinforcing parts are distributed in a quincunx shape; the thickness of the weight-reducing portion located between two adjacent reinforcing portions is located at a central position in the thickness direction of the reinforcing portions. Through the fan-shaped structure and the quincunx layout, the area of the reinforced parts can be reduced as much as possible under the condition of meeting the requirement of the installation strength of the planet shaft, so that the area of the weight reducing parts arranged between the reinforced parts is increased, and the weight reducing effect is enhanced; meanwhile, because the stress margin of the area is large, the thickness of the weight reduction part is reduced as much as possible under the condition of not influencing the strength, the overall weight and the used materials of the planet carrier are reduced, and the cost performance of the planet carrier is improved.

Preferably, the front web plate is provided with a first bearing seat extending outwards, a first shaft mounting hole is formed in the first bearing seat, an annular convex ring is arranged at the inner end of the first shaft mounting hole, the convex ring abuts against the first shaft, and an inner concave cavity is formed on the inner side of the convex ring. Through set up first bearing frame in the front on the web to set up primary shaft mounting hole and primary shaft cooperation in first bearing frame, and set up the bulge loop at the tip of mounting hole and lean on with the primary shaft counterbalance, satisfy the effect of location and biography torsion, and be formed with interior concave cavity at the bulge loop inboard, through setting up the reducible material of using of cavity, promote the price/performance ratio of planet carrier, simultaneously, for the dismantlement of bearing change provides operating space, improve maintenance convenient operation nature.

Preferably, the first bearing seat intersects with the front web, a smooth transition portion is arranged at a position where the bearing mounting end face is located, and the cross section of the transition portion is a quarter arc or a half arc. The stress in this region is reduced by a rounded transition.

Preferably, the rear web is provided with a second bearing seat protruding outwards, and a second bearing mounting hole is formed in the second bearing seat. The second bearing and the second shaft are conveniently installed by arranging the second bearing seat and the second bearing seat installation hole.

Preferably, a plurality of lightening holes are uniformly distributed around the periphery of the second bearing seat, and the lightening holes are staggered with the planet shaft mounting holes in the reinforcing part. Through setting up the lightening hole, when satisfying planet carrier deformation and intensity requirement, great degree again has reduced planet carrier weight, has promoted the price/performance ratio of planet carrier.

Preferably, a rib plate transition fillet is arranged at the intersection of each rib plate and each front web plate and each rear web plate. The hidden danger of stress concentration at the joint of the two ends of the rib plate on the planet carrier is eliminated through the transition round angle, and the service life of the planet carrier is ensured.

Preferably, an arc transition part is formed at the joint of the rib plate and the rib plate. The hidden danger of stress concentration at the joint is eliminated by arranging the arc transition part.

The utility model has the beneficial effects that the rib plate group is arranged between the front web plate and the rear web plate of the planet carrier, materials are reasonably distributed, the rib plates and the rib plates are arranged in a splayed manner to form a stable triangular structure, compared with the original triangular column structure, the weight can be reduced on the premise of not weakening the strength, and the cost performance of the planet carrier is improved; the weight reduction parts are arranged on the front web plate and the rear web plate, partial areas of the front web plate and the rear web plate are thinned under the condition that the overall performance of the planet carrier is not influenced, the overall weight of the planet carrier is reduced, the used materials are reduced, the machining area is reduced through cast-forging integral forming, the labor hour and the labor cost are saved, and the cost performance of the planet carrier is further improved; and reinforcing parts are further arranged on the front web plate and the rear web plate, and local areas are thickened by the reinforcing parts, so that the strength and rigidity of the areas are increased, and sufficient strength and rigidity support is provided for mounting the planet shaft.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is a cross-sectional view B-B of FIG. 2 of the present invention;

FIG. 4 is an enlarged view of the utility model at the location K in FIG. 3;

FIG. 5 is an enlarged view of the utility model at the location K in FIG. 3;

FIG. 6 is a front view of the present invention;

fig. 7 is a cross-sectional view a-a of fig. 4 of the present invention.

Detailed Description

The present invention is further described with reference to the accompanying drawings, but the utility model is not limited thereby within the scope of the described embodiments.

Reference numerals in the drawings of the specification include: the bearing comprises a first shaft mounting hole 1, a second bearing mounting hole 11, a transition part 2, a weight reducing part 3, a reinforcing part 4, rib plate transition fillets 5, rib plates 6, rib plate between rib plates 7, a front web plate 8, a rear web plate 9 and weight reducing holes 10.

Referring to fig. 1 to 7, a planet carrier comprises a front web 8 and a rear web 9, wherein an even number of rib plates 6 are arranged between the front web 8 and the rear web 9, every two rib plates 6 form a rib plate group, a plurality of rib plate groups are uniformly distributed on the circumference, and the two rib plates 6 in each rib plate group are connected through a plurality of rib plates 7 distributed along the axial direction; the front web plate 8 and the rear web plate 9 are respectively provided with a plurality of lightening parts 3 which are distributed in a staggered way in the circumferential direction and reinforcing parts 4 for mounting the planet shafts.

Referring to fig. 1 to 5, each weight reduction part 3 is correspondingly provided with one rib plate group, and two rib plates 6 in each rib plate group are distributed in a splayed shape with a narrow inner part and a wide outer part. The intersection of the first bearing seat and the front web 8 is provided with a smooth transition part 2, and the cross section of the transition part 2 is a quarter circular arc or a half circular arc.

Referring to fig. 1 and 2, the reinforcing part 4 is in a fan shape, and a plurality of reinforcing parts 4 are distributed in a quincunx shape; the thickness of the weight-reduced portion 3 located between two adjacent reinforcing portions 4 is located at a central position in the thickness direction of the reinforcing portions 4.

Referring to fig. 1 and 3, a first bearing seat extending outward is formed on the front web 8, a first shaft mounting hole 1 is formed in the first bearing seat, an annular convex ring is arranged at the inner end of the first shaft mounting hole 1, the convex ring abuts against the first shaft, and an inner concave cavity is formed at the inner side of the convex ring.

Referring to fig. 3, a second bearing seat protrudes outwards from the rear web 9, and a second bearing mounting hole 11 is formed in the second bearing seat.

Referring to fig. 2, a plurality of lightening holes 10 are uniformly distributed around the periphery of the second bearing seat, and the lightening holes 10 are staggered with the planet shaft mounting holes on the reinforcing part 4.

Referring to fig. 1 and 5, each rib 6 is provided with a rib transition fillet 5 at the intersection with the front web 8 and the rear web 9. And an arc transition part is formed at the joint of the rib plate 6 and the rib plate 7.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (9)

1. The planet carrier is characterized by comprising a front web plate (8) and a rear web plate (9), wherein an even number of rib plates (6) are arranged between the front web plate (8) and the rear web plate (9), every two rib plates (6) form a rib plate group, the plurality of rib plate groups are uniformly distributed on the circumference, and the two rib plates (6) in each rib plate group are connected through a plurality of rib plates (7) distributed along the axial direction; the front web plate (8) and the rear web plate (9) are respectively provided with a plurality of weight reducing parts (3) which are distributed in a staggered mode in the circumferential direction and reinforcing parts (4) used for mounting the planet shafts.

2. The planet carrier according to claim 1, wherein each weight-reducing portion (3) is provided with one corresponding rib group, and two ribs (6) in each rib group are distributed in a splayed shape with a narrow inner part and a wide outer part.

3. Planet carrier according to claim 1, characterised in that the reinforcement (4) is sector-shaped, a plurality of reinforcement (4) forming a quincunx distribution; the thickness of the weight-reducing portion (3) between two adjacent reinforcing portions (4) is located at a central position in the thickness direction of the reinforcing portions (4).

4. The planet carrier according to claim 1, wherein the front web (8) is provided with a first bearing seat extending outwards, a first shaft mounting hole (1) is formed in the first bearing seat, an annular convex ring is arranged at the inner end of the first shaft mounting hole (1), and an inner concave cavity is formed inside the convex ring and abuts against the first shaft.

5. The planet carrier according to claim 4, wherein the first bearing seat intersects the front web (8), a smooth transition portion (2) is arranged at the position of the bearing installation end face, and the cross section of the transition portion (2) is a quarter circular arc or a half circular arc.

6. The planet carrier according to any of the claims 1 to 5, characterised in that the rear web (9) has a second bearing seat protruding outwards, in which a second bearing mounting hole (11) is formed.

7. Planet carrier according to claim 6, characterised in that several lightening holes (10) are distributed all around the periphery of the second bearing block, said lightening holes (10) being staggered with respect to the planet axle mounting holes on the reinforcement (4).

8. Planet carrier according to any one of claims 1 to 5, characterised in that each rib (6) is provided with a rib transition fillet (5) at the intersection with the front web (8) and the rear web (9).

9. The planet carrier according to any of claims 1 to 5, wherein the intersection of the rib (6) and the rib (7) forms a circular arc transition.

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