CN210889940U

CN210889940U - Planet carrier assembly and planetary gearbox

Info

Publication number: CN210889940U
Application number: CN201921944055.2U
Authority: CN
Inventors: 黄晓艳; 鲁成瑞; 黄锋
Original assignee: Shandong Lingong Construction Machinery Co Ltd
Current assignee: Shandong Lingong Construction Machinery Co Ltd
Priority date: 2019-11-12
Filing date: 2019-11-12
Publication date: 2020-06-30
Anticipated expiration: 2029-11-12

Abstract

The utility model relates to a gearbox technical field specifically discloses a planet carrier subassembly and planetary gearbox, planet carrier subassembly include planet carrier body, planet axle and pin, and planet carrier body is including integrative planet carrier and the connection pad that sets up, and the connection pad is located planet carrier axial's one end, is equipped with the shaft hole on the planet carrier body, and planet carrier and connection pad all run through in each shaft hole are equipped with first pinhole, first pinhole and shaft hole intercommunication on the outer peripheral face of connection pad. The planet shaft penetrates through the shaft hole, and a second pin hole is formed in the outer peripheral surface of the planet shaft; the pin is simultaneously pegged graft in first pinhole and second pinhole, and the pin and first pinhole and the equal interference fit of second pinhole. Through making planet carrier and the integrative setting of connection pad, reducible spare part quantity, and can guarantee the bulk strength of planet carrier body, it is fixed with the connection pad of planet axle and planet carrier body through the pin, can reduce the degree of difficulty of equipment, improve the efficiency of equipment.

Description

Planet carrier assembly and planetary gearbox

Technical Field

The utility model relates to a gearbox technical field especially relates to a planet carrier subassembly and planetary gearbox.

Background

The planet shafts in the planet carrier assembly members of current planetary gearboxes are usually positioned using brake discs.

As shown in fig. 1 to 3, the conventional planet carrier assembly includes a planet carrier 1-1, a connecting disc 1-2, a planet shaft 1-3 and a stop disc 1-4, the connecting disc 1-2 and the planet carrier 1-1 are axially connected by a bolt 1-5, the stop disc 1-4 is clamped between the connecting disc 1-2 and the planet carrier 1-1, the planet shaft 1-3 simultaneously passes through the connecting disc 1-2 and the planet carrier 1-1, a clamping groove 1-31 is formed on the outer circumferential surface of the planet shaft 1-3, and the stop disc 1-4 is further clamped with the clamping groove 1-31 to limit the axial movement of the planet shaft 1-3. The planet carrier assembly has more parts and is difficult to assemble, and the split planet carrier 1-1 and the split connecting disc 1-2 are connected only by the bolts 1-5 and the planet shaft 1-3, so that the strength is lower.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the utility model provides a planet carrier subassembly and planetary gearbox to solve among the prior art planet carrier subassembly part more, the problem of assembly difficulty, and the lower problem of planet carrier subassembly intensity.

In one aspect, the utility model provides a planet carrier assembly, this planet carrier assembly includes:

the planet carrier comprises a planet carrier body, the planet carrier body comprises a planet carrier and a connecting disc which are integrally arranged, the connecting disc is positioned at one axial end of the planet carrier, the planet carrier body is provided with shaft holes, each shaft hole penetrates through the planet carrier and the connecting disc, the outer peripheral surface of the connecting disc is provided with a first pin hole, and the first pin hole is communicated with the shaft holes;

the planet shaft penetrates through the shaft hole, and a second pin hole is formed in the outer peripheral surface of the planet shaft;

the pin is inserted into the first pin hole and the second pin hole simultaneously, and the pin is in interference fit with the first pin hole and the second pin hole.

As a preferable technical scheme of the planet carrier assembly, two ends of the pin along the axial direction of the pin are provided with chamfers.

As a preferred technical scheme of the planet carrier assembly, the pin is an elastic cylindrical pin.

As a preferable technical scheme of the planet carrier assembly, the first pin hole has a first end located on the peripheral surface of the connecting disc and a second end communicated with the shaft hole, a protruding structure is arranged on the inner wall of the first end, the head of the pin is not higher than the peripheral surface of the connecting disc, and the protruding structure is used for limiting the pin to be separated from the first pin hole.

As a preferable technical solution of the planet carrier assembly, a groove is provided on an outer circumferential surface of the connection disc, a distance between a center of the groove and a center of the first pin hole is L, and the groove is configured to be formed by extrusion.

As a preferable technical scheme of the planet carrier assembly, a plurality of grooves are formed in the peripheral surface of the connecting disc, and the grooves are uniformly distributed in the circumferential direction of the first pin hole.

As a preferred solution for the planet carrier assembly member, the recess is tapered, the taper angle of the recess being α.

As a preferred technical scheme of the planet carrier assembly, the number of the planet shafts and the number of the pins are multiple, the planet carrier body is provided with the shaft holes and the first pin holes corresponding to the planet shafts, the plurality of planet shafts penetrate through the shaft holes in a one-to-one correspondence manner, and the pins are connected with the connecting disc and the corresponding planet shafts.

As a preferable technical scheme of the planet carrier assembly, the number of the planet shafts and the number of the pins are four, and the four planet shafts are uniformly distributed in the circumferential direction of the planet carrier body.

On the other hand, the utility model provides a planetary gearbox, planet carrier subassembly in the above-mentioned arbitrary scheme of including.

The utility model has the advantages that:

the utility model provides a planet carrier assembly, this planet carrier assembly include planet carrier body, planet axle and pin. The planet carrier body comprises a planet carrier and a connecting disc which are integrally arranged, the connecting disc is located at one end of the planet carrier in the axial direction, the planet carrier body is provided with shaft holes, each shaft hole penetrates through the planet carrier and the connecting disc, the outer peripheral face of the connecting disc is provided with a first pin hole, and the first pin hole is communicated with the shaft holes. The planet shaft penetrates through the shaft hole, and a second pin hole is formed in the outer peripheral surface of the planet shaft; the pin is simultaneously pegged graft in first pinhole and second pinhole, and the pin and first pinhole and the equal interference fit of second pinhole. This planet carrier subassembly sets up to the planet carrier body through making planet carrier and connection pad an organic whole to can effectively reduce the quantity of spare part, and can guarantee the bulk strength of planet carrier body, it is fixed with the connection pad of planet axle and planet carrier body through the pin, compares correlation technique and can avoid adopting the locking disk, simultaneously, also can reduce the degree of difficulty of equipment, improves the efficiency of equipment.

Drawings

Fig. 1 is a schematic structural diagram of a conventional spider assembly in the background art of the present invention;

FIG. 2 is a cross-sectional view of a prior art spider assembly of the present invention;

fig. 3 is a schematic structural diagram of a planet shaft in a conventional planet carrier assembly according to the background art of the present invention;

FIG. 4 is a schematic structural view of a planet carrier assembly member according to an embodiment of the present invention;

FIG. 5 is an axial cross-sectional view of a planet carrier assembly member in an embodiment of the present invention;

FIG. 6 is an enlarged view taken at A in FIG. 4;

FIG. 7 is a radial partial cross-sectional view of a planet carrier assembly member according to an embodiment of the present invention;

FIG. 8 is an enlarged view at B of FIG. 7;

fig. 9 is a schematic structural diagram of a planet carrier in an embodiment of the present invention;

fig. 10 is a cross-sectional view of the planet carrier in the embodiment of the present invention;

fig. 11 is a schematic structural diagram of a planet axle in an embodiment of the present invention.

In the figure:

1-1, a planet carrier; 1-2, connecting disc; 1-3, planet axle; 1-31, a card slot; 1-4, a stop disk; 1-5, bolts;

1. a planet carrier body; 11. a planet carrier; 12. a connecting disc; 13. a shaft hole; 14. a first pin hole; 15. a groove;

2. a planet shaft; 21. a second pin hole; 22. chamfering;

3. a pin.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 4 to 11, the present embodiment provides a planet carrier assembly, which may be embodied as a planet carrier assembly for forward and first gears, and the planet carrier assembly includes a planet carrier body 1, a planet shaft 2 and a pin 3. Planet carrier body 1 includes integrative planet carrier 11 and the connection pad 12 that sets up, and connection pad 12 is located 11 axial one ends of planet carrier, is equipped with shaft hole 13 on the planet carrier body 1, and each shaft hole 13 all runs through planet carrier 11 and connection pad 12, is equipped with first pinhole 14 on the outer peripheral face of connection pad 12, and first pinhole 14 communicates with shaft hole 13. The planet shaft 2 penetrates through the shaft hole 13, and a second pin hole 21 is formed in the outer peripheral surface of the planet shaft 2; the pin 3 is inserted into the first pin hole 14 and the second pin hole 21 simultaneously, and the pin 3 is in interference fit with the first pin hole 14 and the second pin hole 21. The planet carrier assembly that this embodiment provided, planet carrier 11 and connection pad 12 an organic whole set up to planet carrier body 1 to can effectively reduce the quantity of spare part, and can guarantee planet carrier body 1's bulk strength, it is fixed with planet axle 2 and planet carrier body 1's connection pad 12 through pin 3, compare the correlation technique and can avoid adopting the locking disc, simultaneously, also can reduce the degree of difficulty of equipment, improve the efficiency of equipment.

In this embodiment, the diameter of the first pin hole 14 is equal to the diameter of the second pin hole 21, a part of the pin 3 is inserted into the second pin hole 21, another part of the pin 3 is inserted into the first pin hole 14, and the head of the pin 3 is located in the first pin hole 14, that is, the head of the pin 3 is not higher than the outer peripheral surface of the connecting disc 12.

Alternatively, both ends of the pin 3 in the axial direction thereof are provided with chamfers 22, and by providing the chamfers 22, the pin 3 can be guided when inserted into the pin hole. Specifically, the pin 3 may be an elastic cylindrical pin, which is a hollow cylindrical body, and has a through groove formed in the axial direction, and has a certain elasticity. It can be understood that the outer diameter of the pin 3 is larger than the inner diameter of the first pin hole 14 and the second pin hole 21, when the pin 3 is inserted into the pin holes, the pin 3 is extruded to shrink the through groove, and meanwhile, the pin 3 is tightly matched with the pin holes, so that the stable connection between the planet shaft 2 and the planet carrier body 1 is ensured, and the axial positioning of the planet shaft 2 is realized. The outer diameter of the pin 3 is preferably 6mm to 8 mm.

Alternatively, the first pin hole 14 has a first end located on the outer circumferential surface of the connecting disc 12 and a second end communicating with the shaft hole 13, and a protrusion structure (not shown in the drawings) is provided on the inner wall of the first end, and since the head of the pin 3 does not rise above the outer circumferential surface of the connecting disc 12, the protrusion structure can be used to restrict the pin 3 from coming off the first pin hole 14. It should be noted that the protruding structure is not provided before the carrier assembly is assembled, and the protruding structure is provided after the carrier assembly is completed, so that the pin 3 can be prevented from coming out of the pin hole. Specifically, the outer peripheral surface of the connecting disc 12 is provided with a groove 15, the distance between the center of the groove 15 and the center of the first pin hole 14 is L, the groove 15 is configured to be formed by extrusion, the groove 15 is arranged after the assembly of the planet carrier assembly is completed, and the groove 15 is arranged to deform the side wall of the first pin hole 14 closest to the groove 15, so as to form a convex structure. The groove 15 may be formed by hammering on the outer surface of the connecting disc 12 with a chisel. As for the numerical value size of L, can set up according to actual need, the utility model discloses do not limit to this.

Preferably, the outer circumferential surface of the connecting disc 12 is provided with a plurality of grooves 15, and the plurality of grooves 15 are uniformly distributed in the circumferential direction of the first pin hole 14, further preferably, the grooves 15 are tapered, and the taper angle of the grooves 15 is α.

In this embodiment, the number of the planet shafts 2 and the number of the pins 3 are multiple, the planet carrier body 1 is provided with a shaft hole 13 and a first pin hole 14 corresponding to each planet shaft 2, the plurality of planet shafts 2 penetrate through the plurality of shaft holes 13 in a one-to-one correspondence manner, and each pin 3 is connected with the connecting disc 12 and the corresponding planet shaft 2. Specifically, the number of the planet shafts 2 and the pins 3 is four, and the four planet shafts 2 are uniformly distributed in the circumferential direction of the planet carrier body 1.

The embodiment also provides a planetary gearbox which comprises the planet carrier assembly in the scheme.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A planet carrier assembly member, comprising:

the planet carrier comprises a planet carrier body (1), wherein the planet carrier body (1) comprises a planet carrier (11) and a connecting disc (12) which are integrally arranged, the connecting disc (12) is positioned at one axial end of the planet carrier (11), shaft holes (13) are formed in the planet carrier body (1), each shaft hole (13) penetrates through the planet carrier (11) and the connecting disc (12), a first pin hole (14) is formed in the peripheral surface of the connecting disc (12), and the first pin holes (14) are communicated with the shaft holes (13);

the planet shaft (2) penetrates through the shaft hole (13), and a second pin hole (21) is formed in the outer peripheral surface of the planet shaft (2);

the pin (3) is simultaneously inserted into the first pin hole (14) and the second pin hole (21), and the pin (3) is in interference fit with the first pin hole (14) and the second pin hole (21).

2. The planet carrier assembly according to claim 1, wherein the pin (3) is provided with chamfers (22) at both ends in its axial direction.

3. The planet carrier assembly according to claim 2, wherein the pin (3) is a resilient cylindrical pin.

4. The planet carrier assembly according to claim 1, wherein the first pin hole (14) has a first end located on the outer peripheral surface of the connecting plate (12) and a second end communicating with the shaft hole (13), the first end has a protrusion structure on an inner wall, the head of the pin (3) is not higher than the outer peripheral surface of the connecting plate (12), and the protrusion structure is used for limiting the pin (3) to be separated from the first pin hole (14).

5. A planet carrier assembly member according to claim 4, wherein the connection disc (12) is provided with a recess (15) on its outer circumference, the distance between the centre of the recess (15) and the centre of the first pin aperture (14) being L, the recess (15) being configured to be formed by extrusion.

6. A planet carrier assembly member according to claim 5, wherein the connecting disc (12) is provided with a plurality of grooves (15) on its outer circumference, and the plurality of grooves (15) are evenly distributed in the circumferential direction of the first pin aperture (14).

7. A planet carrier assembly member according to claim 5, wherein the recess (15) is tapered, the taper angle of the recess (15) being α.

8. The planet carrier assembly according to claim 7, wherein the number of the planet shafts (2) and the pins (3) is multiple, the planet carrier body (1) is provided with the shaft holes (13) and the first pin holes (14) corresponding to the planet shafts (2), the plurality of the planet shafts (2) are arranged in the shaft holes (13) in a one-to-one correspondence, and the pins (3) are connected with the connecting disc (12) and the corresponding planet shafts (2).

9. Planet carrier assembly according to claim 8, characterized in that the number of planet shafts (2) and pins (3) is four each, and four planet shafts (2) are all distributed in the circumferential direction of the planet carrier body (1).

10. A planetary gearbox comprising a planet carrier assembly according to any of claims 1-9.