CN212839333U - Planet carrier for a transmission - Google Patents

Abstract

The disclosure relates to the technical field of automatic transmissions and provides a planet carrier for a transmission. This planet carrier includes first planet carrier body, second planet carrier body and connection structure, and connection structure includes a plurality of supporting shoes, and the outside of every supporting shoe all is equipped with the picture peg, and the tip of picture peg stretches out the tip of supporting shoe, is equipped with the slotted hole on the outer hub of clutch. This application is in welding process, picture peg on the first planet carrier body is connected with the slotted hole on the second planet carrier body, realize tentatively spacing, rethread frock clamp fixes first planet carrier body and makes its vertical placing, the second planet carrier body supports the top at first planet carrier body, weld through welding equipment, effectively reduce the welding degree of difficulty, and the area of contact of picture peg multiplicable first planet carrier body and second planet carrier body, effectively undertake partial revolving force, reduce welding position's atress degree, ensure the stability of first planet carrier body and this body coupling of second planet carrier.

Description

Planet carrier for a transmission

Technical Field

The present disclosure relates to the technical field of automatic transmissions, and particularly to a planet carrier for a transmission.

Background

An automotive transmission is a set of transmission devices for coordinating the rotational speed of an engine and the actual driving speed of wheels, and is used for exerting the best performance of the engine. The transmission can generate different gear ratios between an engine and wheels during the running process of the automobile, and the transmission of the rotating speeds of different gears is realized.

The manual transmission mainly comprises gears and a rotating shaft, and the speed change and torque change are generated by different gear combinations; the automatic transmission AT consists of a hydraulic torque converter, a planetary gear and a hydraulic control system, and achieves speed and torque changing through a hydraulic transmission and gear combination mode.

Among them, the automatic transmission has advantages of comfortable driving, reducing fatigue of driver, etc., and has become a development direction of modern car configuration. The automatic transmission utilizes a planetary gear mechanism to change speed, can automatically change speed according to the degree of an accelerator pedal and the change of vehicle speed, and a driver only needs to operate the accelerator pedal to control the vehicle speed, so that the driver can watch road traffic with full attention without being confused by gear shifting.

The automatic transmission includes a plurality of planetary gear assemblies and a plurality of shift elements, wherein the shift elements include clutches and brakes, and the planetary gear assemblies include a sun gear, planet wheels, a planet carrier, and a ring gear. The opening and closing of the clutches and brakes control the transmission relationship between the various planetary transmission assemblies to thereby vary the transmission ratio of the transmission.

The planet carrier in the prior art adopts an integrated structure, but the production and installation processes of the planet carrier with the design mode are complex. Also some planet carriers adopt split type design, be about to the planet carrier divide into first planet carrier body and second planet carrier body, adopt welded mode again between first planet carrier body and the second planet carrier body fixed. In the welding process of the planet carrier, the positions of a first planet carrier body and a second planet carrier body are respectively fixed through two tool fixtures, the first planet carrier body and the second planet carrier body are driven to rotate synchronously, and then the first planet carrier body and the second planet carrier body are welded together through welding equipment, so that the welding difficulty is high, the welding technical requirement is high, the welding dislocation phenomenon is easy to occur, and the welding effect is influenced; and there is not other strong point between first planet carrier body and the second planet carrier body after the welding, and the stability after the welding is relatively poor, the phenomenon of opening the welding appears easily.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problem or at least partially solve the above technical problem, the utility model provides a planet carrier for derailleur.

The planet carrier for derailleur includes first planet carrier body, second planet carrier body and connection structure, connection structure includes a plurality of by the supporting shoe that the terminal surface of first planet carrier body perpendicularly extended the setting, every the outside of supporting shoe all is equipped with the picture peg, the tip of picture peg stretches out the tip of supporting shoe, the terminal surface of second planet carrier body be equipped with picture peg assorted slotted hole, the picture peg stretches out the length of supporting shoe with the length of slotted hole is the same, works as the picture peg inserts in the slotted hole, just the tip of supporting shoe supports during the terminal surface of second planet carrier body, the tip of picture peg with interference fit between the slotted hole.

Optionally, the sectional area of the slot hole is gradually reduced along the insertion direction of the insert plate.

Optionally, each of the support blocks and the inserting plate are arranged at intervals along the circumferential direction of the first planet carrier body.

Optionally, the inserting plate is an arc-shaped plate, and the bending radius of the arc-shaped plate is adapted to the radius of the planet carrier.

Optionally, a cavity for mounting the planet gear is formed between two adjacent support blocks, and the length of each support block is matched with that of the planet gear.

Optionally, a plurality of first mounting holes for mounting a planet wheel shaft are formed in the first planet carrier body, the first mounting holes correspond to the cavity in position, and second mounting holes are formed in the second planet carrier body and correspond to the first mounting holes in position.

Optionally, the second planet carrier body is formed by a cover plate of a clutch outer hub of the transmission, and the slot hole is provided in the cover plate.

Optionally, through holes for connecting with an input shaft of a transmission are formed in the middle parts of the first planet carrier body and the second planet carrier body.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

this application sets up picture peg and supporting shoe at the terminal surface of first planet carrier body to set up the slotted hole on the second planet carrier body, during the installation, insert the picture peg in the slotted hole, and picture peg and slotted hole interference fit make and form the welding point between the tip of picture peg and the terminal surface of clutch outer hub. In welding process, be connected picture peg and slotted hole, realize tentatively spacing, the fixed first planet carrier body of rethread frock clamp and make its vertical placing, the second planet carrier body supports at the top of first planet carrier body, weld through welding equipment, effectively reduce the welding degree of difficulty, and the contact area of picture peg multiplicable first planet carrier body and second planet carrier body, effectively undertake partial revolving force, reduce welding position's atress degree, ensure the stability of first planet carrier body and this body coupling of second planet carrier.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic view of a first carrier body according to an embodiment of the disclosure;

FIG. 2 is a schematic illustration of a second planet carrier body formed by a clutch outer hub according to an embodiment of the disclosure;

FIG. 3 is a cross-sectional view of the first carrier body and clutch outer hub connection in accordance with an embodiment of the present disclosure;

FIG. 4 is a schematic illustration of a first carrier body and a second carrier body coupled according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of a side of the second planet carrier body coupled to the clutch inner hub according to an embodiment of the disclosure;

FIG. 6 is a schematic diagram of a planet carrier coupled to an input shaft according to an embodiment of the present disclosure;

fig. 7 is a schematic view of a first carrier body coupled to an input shaft according to an embodiment of the present disclosure.

Reference numerals:

1. a first carrier body; 11. a support block; 12. inserting plates; 13. a through hole; 2. a second planet carrier body; 21. a slot; 3. an annular plate; 4. a clutch outer hub; 41. a cover plate; 5. a first mounting hole; 6. and a second mounting hole.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

Referring to fig. 1 to 7, a carrier for a transmission according to an embodiment of the present application includes a first carrier body 1, a second carrier body 2, and a connecting structure. As shown in fig. 1, the connecting structure includes a plurality of supporting blocks 11 extending vertically from the end surface of the first carrier body 1, and an inserting plate 12 is disposed outside each supporting block 11, wherein the inserting plate 12 is also formed by extending vertically from the end surface of the first carrier body 1. Further optimally, the inserting plate 12 and the supporting block 11 are integrally formed, so that the manufacturing difficulty is reduced, and meanwhile, the strength of the inserting plate 12 is effectively increased. The end of the insert plate 12 extends out of the end of the supporting block 11, and as shown in fig. 2, 5 and 6, the second planet carrier body 2 is provided with a slot 21 matched with the insert plate 12, where matching means that the insert plate 12 is opposite to the slot 21, and the insert plate 12 can be inserted into the slot 21. The length of the insertion plate 12 extending out of the supporting block 11 is the same as the length of the slot 21, that is, when the insertion plate 12 is completely inserted into the slot 21, the end surface of the insertion plate 12 is flush with the end surface of the slot 21. When the insert plate 12 is inserted into the slot 21 and the end of the supporting block 11 is supported on the end surface of the second planet carrier body 2, the end of the insert plate 12 is in interference fit with the slot 21, so that the insert plate 12 and the second planet carrier body 2 can be welded together by a welding device.

The area of the slot 21 is gradually reduced along the insertion direction of the insertion plate 12, that is, the area of the slot 21 on the side facing the first planet carrier body 1 is larger than the area of the slot 21 on the side far away from the first planet carrier body 1, so that the insertion of the insertion plate 12 is facilitated, and the installation speed of the second planet carrier body 2 is increased. Further optimally, as shown in fig. 1, the inserting plate 12 is an arc-shaped plate, and the bending radius of the arc-shaped plate is adapted to the radius of the first planet carrier body 1, so that the strength of the inserting plate 12 is increased.

As shown in fig. 1, each supporting block 11 and the insert plate 12 of the present application are disposed at intervals along the circumferential direction of the first planet carrier body 1, so that the welding points of the second planet carrier body 2 and the first planet carrier body 1 are uniformly arranged, and the connection stability is increased. Further optimally, a cavity for mounting the planet gears is formed between two adjacent supporting blocks 11, that is, two sides of each supporting block 11 are arc-shaped, so that an arc-shaped cavity is formed between the side walls of two adjacent supporting blocks 11, which is convenient for mounting the planet gears. The length of supporting shoe 11 and the length phase-match of planet wheel, wherein, the length of supporting shoe 11 is the distance between the terminal surface of first planet carrier body 1 and the terminal surface of second planet carrier body 2 promptly, and the phase-match of this department indicates through the length of reasonable setting supporting shoe 11 for the distance between the terminal surface of first planet carrier body 1 and the terminal surface of second planet carrier body 2 satisfies the installation demand of planet wheel.

Further optimally, a plurality of first mounting holes 5 used for mounting planet wheel shafts are formed in the first planet carrier body 1, the first mounting holes 5 correspond to the positions of the cavities, and second mounting holes 6 are formed in the positions, corresponding to the first mounting holes 5, of the second planet carrier body 2. Two ends of the planet wheel shaft are respectively installed in the first installation hole 5 and the second installation hole 6, and after the planet wheel shaft is installed in place, the planet wheel can be inserted onto the planet wheel shaft, rotates relative to the planet wheel shaft, and drives the first planet carrier body 1 and the second planet carrier body 2 to rotate through the planet wheel shaft.

This application sets up picture peg 12 and supporting shoe 11 at the terminal surface of first planet carrier body 1 to set up slotted hole 21 on second planet carrier body 2, during the installation, insert picture peg 12 in slotted hole 21, and picture peg 12 and slotted hole 21 interference fit make and form the welding point between the tip of picture peg 12 and the terminal surface of second planet carrier body 2.

In the welding process, the inserting plate 12 is connected with the slotted hole 21 to realize primary limiting; fix first planet carrier body 1 and make it vertical through frock clamp again, second planet carrier body 2 supports at the top of first planet carrier body 1, welds through welding equipment, effectively reduces the welding degree of difficulty, and picture peg 12 multiplicable first planet carrier body 1 and the area of contact of second planet carrier body 2 effectively undertake partial revolving force, reduces the stress degree of welding position, ensures the stability that first planet carrier body 1 and second planet carrier body 2 are connected.

As shown in fig. 6 and 7, the planet carrier may be used to connect an input shaft of a transmission, that is, through holes 13 for connecting the input shaft of the transmission are formed in the middle portions of the first planet carrier body 1 and the second planet carrier body 2, and the planet carrier may be driven to rotate by the rotation of the input shaft.

The planet carrier can also be used for connecting a clutch, and the rotation state of the planet carrier is controlled by the clutch. Specifically, as shown in fig. 4 and 5, the second carrier body 2 is connected to an inner hub of the clutch, and the rotation state of the second carrier body 2, and thus the rotation state of the carrier, is controlled by opening or closing the clutch.

As shown in fig. 1, 2 and 3 in combination, the second carrier body 2 may be formed by a cover plate 41 of the clutch outer hub 4 of the transmission, with the groove hole 21 provided on the cover plate 41. The periphery of clutch outer hub 4 is equipped with round parking tooth, and the number of parking tooth is 4 multiples, and wherein, the preferred 20 of number of parking tooth, parking tooth are used for cooperating with the parking system, can realize the parking function. Preferably, the clutch outer hub 4 comprises an annular plate 3 for connection with the friction plates of the clutch, and the cover plate 4 is arranged at one end of the annular plate 3. The rotation state of the second planet carrier body 2 is controlled by opening or closing the clutch, and then the rotation state of the planet carrier is controlled.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. A planet carrier for a transmission, comprising a first planet carrier body (1), a second planet carrier body (2) and a connecting structure, the connecting structure comprises a plurality of supporting blocks (11) which are vertically extended from the end surface of the first planet carrier body (1), the outer side of each supporting block (11) is provided with a plug board (12), the end part of the inserting plate (12) extends out of the end part of the supporting block (11), the end surface of the second planet carrier body (2) is provided with a slotted hole (21) matched with the inserting plate (12), the length of the inserting plate (12) extending out of the supporting block (11) is the same as that of the slotted hole (21), when the insert plate (12) is inserted into the slotted hole (21) and the end part of the supporting block (11) is supported on the end surface of the second planet carrier body (2), the end part of the inserting plate (12) is in interference fit with the slotted hole (21).

2. Planet carrier for a transmission according to claim 1, characterised in that the cross-sectional area of the slotted hole (21) decreases in the direction of insertion of the insert plate (12).

3. Planet carrier for a transmission according to claim 1, characterised in that each support block (11) and insert plate (12) are arranged at intervals in the circumferential direction of the first planet carrier body (1).

4. Planet carrier for a transmission according to claim 1, characterised in that the insert plate (12) is an arc-shaped plate, the bending radius of which is adapted to the radius of the first planet carrier body (1).

5. Planet carrier for a transmission according to claim 1, characterised in that a cavity for mounting planet wheels is formed between two adjacent support blocks (11), the length of the support blocks (11) matching the length of the planet wheels.

6. Planet carrier for a transmission according to claim 5, characterised in that the first planet carrier body (1) is provided with a plurality of first mounting holes (5) for mounting planet axles, the first mounting holes (5) corresponding to the positions of the cavities, and the second planet carrier body (2) is provided with second mounting holes (6) corresponding to the positions of the first mounting holes (5).

7. Planet carrier for a transmission according to claim 1, characterised in that the second planet carrier body (2) is formed by a cover plate (41) of a clutch outer hub (4) of the transmission, the groove hole (21) being provided in the cover plate (41).

8. Planet carrier for a transmission according to claim 1, characterised in that the middle of the first (1) and second (2) planet carrier body is provided with a through hole (13) for connection with the input shaft of the transmission.

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