CN217010605U

CN217010605U - High-speed motor driving system

Info

Publication number: CN217010605U
Application number: CN202220260272.5U
Authority: CN
Inventors: 郝庆军; 刘记; 陆中华; 王佳琪; 冯涛; 徐溯源
Original assignee: Capotech Suzhou Co ltd
Current assignee: Capotech Suzhou Co ltd
Priority date: 2022-02-08
Filing date: 2022-02-08
Publication date: 2022-07-19
Anticipated expiration: 2032-02-08

Abstract

The utility model provides a high-speed motor driving system, wherein a high-speed motor with the rotating speed of 6-8kr/min is selected as a driving motor (EM); the input gear pair and each gear pair are deceleration gears; compared with the scheme that a low-speed motor is used as a driving source in the prior art, the system has the advantages that the cost is reduced, the structure is compact, and the internal structural space is saved; an embedded mechanical pump is adopted and is arranged at the front end of the middle shaft, so that the structure is compact and the cost is low; and a forced lubrication mode is adopted to reduce the oil stirring loss and improve the system efficiency.

Description

High-speed motor driving system

Technical Field

The utility model relates to the technical field of vehicle driving systems, in particular to a high-speed motor driving system.

Background

At present, an electrically controlled mechanical automatic transmission (AMT) in the prior art basically adopts a low-speed motor as a driving source, and in order to meet the requirement of high-speed driving, the AMT generally can be provided with a direct gear or an overdrive gear. However, the low-speed motor is expensive to configure, and the direct gear or the overdrive gear increases the cost of the internal space arrangement, which leads to an increase in the cost of the entire drive system.

Disclosure of Invention

In order to overcome the defects and shortcomings in the prior art, the utility model provides a high-speed motor driving system.

The technical scheme provided by the utility model is as follows: a high speed motor drive system comprising:

the output shaft of the driving motor (EM) is connected with an input shaft (S1), and the input shaft (S1) is connected with a middle shaft (S2) through an input gear pair;

the transmission mechanism comprises an intermediate shaft (S2), wherein a plurality of gear driving gears are arranged on the intermediate shaft (S2);

the output shaft (S3) is provided with a plurality of gears of driven gears, and the intermediate shaft (S2) and the output shaft (S3) are connected through corresponding meshing of the gears of the driving gears and the driven gears so as to transmit power;

a first clutch (C1), the first clutch (C1) is arranged on the output shaft and can be selectively engaged with the gears of the gear pairs on two sides;

a second clutch (C2), the second clutch (C2) is arranged on the output shaft and can be selectively engaged with the gears of the gear pairs on two sides; the driving motor (EM) is a high-speed motor with the rotating speed of 6-8 kr/min; and the input gear pair and each gear pair are all speed reduction gears.

Further, the drive system includes one to four-total four-speed gear pairs arranged in reverse in the power output direction of the output shaft.

Further, the drive gears (Z21, Z22, Z23, Z24) of the one-to-four-gear pair are fixedly mounted on the intermediate shaft (S2).

Furthermore, driven gears (Z31, Z32, Z33 and Z34) of the one-four-gear pair are movably sleeved on the output shaft (S3).

Further, the first clutch (C1) is located between the first and second gear pairs and is selectively engageable with the driven gears (Z31, Z32) of the first and second gear pairs on either side.

Further, the second clutch (C2) is located between the three-and four-gear pairs and is selectively engageable with the driven gears (Z33, Z34) of the two-side three-and four-gear pairs.

Furthermore, except for the fourth gear, the tooth number of the driving gear of each gear is correspondingly smaller than that of the driven gear of each gear.

Further, the input gear pair comprises an input driving gear (Z10) and an input driven gear (Z20) which are meshed correspondingly, the input driving gear (Z10) is fixedly connected with the input shaft (S1), and the input driven gear (Z20) is fixedly connected with the intermediate shaft (S2).

Further, the number of teeth of the input driving gear (Z10) is less than that of the input driven gear (Z20).

Compared with the prior art, the utility model has the following beneficial effects:

1) the utility model provides a high-speed motor driving system, which adopts a high-speed motor as a driving source, wherein each gear of an AMT (automated mechanical transmission) is a reduction gear, so that the total speed ratio is also a reduction speed ratio, and a direct gear and an overdrive gear are cancelled.

2) The utility model provides a high-speed motor driving system which adopts an embedded mechanical pump, is arranged at the front end of a middle shaft, and has compact structure and low cost.

2) The utility model provides a high-speed motor driving system which realizes forced lubrication through a pump, reduces the oil stirring loss and improves the system efficiency.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, 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.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

[ first embodiment ]

Fig. 1 shows a first embodiment of a high-speed motor driving system provided by the present invention, which includes:

the output shaft of the driving motor EM is connected with an input shaft S1, and the input shaft S1 is connected with an intermediate shaft S2 through an input gear pair; in the present embodiment, as shown in fig. 1, the input gear pair includes an input driving gear Z10 and an input driven gear Z20 which are engaged with each other, the input driving gear Z10 is fixedly connected to the input shaft S1, the input driven gear Z20 is fixedly connected to the intermediate shaft S2, the output power of the driving motor EM is transmitted to the intermediate shaft S2 through the input gear pair, and then is transmitted to the output shaft S3 through the intermediate shaft S2.

As shown in fig. 1, the present embodiment further includes a pump P, an output shaft of which is connected to the intermediate shaft S2; preferably, the pump P is an in-line mechanical pump and is mounted at the front end of the intermediate shaft, so that the structure is compact and the cost is low; meanwhile, forced lubrication is realized through the pump, the oil stirring loss is reduced, and the system efficiency is improved.

In the embodiment, the transmission also comprises an intermediate shaft S2, wherein a plurality of gear driving gears are arranged on the intermediate shaft S2; and the output shaft S3 is provided with a plurality of gears of driven gears on the output shaft S3, and the intermediate shaft S2 and the output shaft S3 are connected through corresponding meshing of the gears of the driven gears and the driven gears so as to transmit power. In the present embodiment, as shown in fig. 1, the drive system preferably includes one to four-total four-speed gear pairs arranged in reverse in the power output direction of the output shaft S3. The driving gears Z21, Z22, Z23 and Z24 of one-four-gear pair are fixedly arranged on the intermediate shaft S2; and driven gears Z31, Z32, Z33 and Z34 of the one-four-gear and four-gear pair are movably sleeved on the output shaft S3.

The scheme of the embodiment also comprises a first clutch C1, wherein the first clutch C1 is arranged on the output shaft S3 and can be selectively engaged with gears of two side gear pairs; and a second clutch C2, the second clutch C2 is disposed on the output shaft S3 and can be selectively engaged with gears of two gear pairs. The first clutch C1 is located between the first and second gear pairs and can be selectively engaged with the driven gears Z31, Z32 of the first and second gear pairs on two sides, the second clutch C2 is located between the third and fourth gear pairs and can be selectively engaged with the driven gears Z33, Z34 of the third and fourth gear pairs on two sides, so that the first and second gear pairs can be switched through the first clutch C1, and the third and fourth gear pairs can be switched through the second clutch C2.

As the outstanding contribution of the utility model compared with the prior art, the driving motor EM in the scheme selects a high-speed motor with the rotating speed of 6-8 kr/min; the input gear pair and each gear pair are deceleration gears; compared with the prior art, the direct gear and the overspeed gear are cancelled, and compared with the scheme that a low-speed motor is used as a driving source in the prior art, the cost is reduced, the structure is compact, and the internal structure space is saved.

In the present embodiment, the number of teeth of the input driving gear Z10 is less than that of the input driven gear Z20; as shown in fig. 1, except for the fourth gear, the number of teeth of the driving gear of each gear is correspondingly smaller than that of the driven gear of each gear; therefore, the integral speed reduction effect of the driving system is realized through two-stage speed reduction; as shown in fig. 1, the number of teeth of the fourth-gear driven gear Z34 of the present embodiment is smaller than that of the fourth-gear driving gear Z24, so that after the first-stage speed reduction through the input gear pair, the four-gear pair starts in a speed reduction mode and then operates in a speed increase mode during operation, but the speed reduction of the speed reduction input gear pair is still kept higher than that of the speed increase portion of the four-gear pair as a whole.

[ second embodiment ]

The present embodiment is different from the first embodiment only in that the number of teeth of each stage driving gear is correspondingly smaller than that of each stage driven gear (not shown), so that the overall speed reduction effect of the drive system is realized through two-stage speed reduction.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A high speed motor drive system comprising:

the output shaft (S3) is provided with a plurality of gears of driven gears, and the intermediate shaft (S2) and the output shaft (S3) are connected through corresponding meshing of the main gears and the driven gears of all gears to transmit power;

a second clutch (C2), the second clutch (C2) is arranged on the output shaft and can be selectively engaged with the gears of the gear pairs on two sides; the method is characterized in that:

the driving motor (EM) is a high-speed motor with the rotating speed of 6-8 kr/min; and the input gear pair and each gear pair are all speed reduction gears.

2. A high speed motor drive system as claimed in claim 1, wherein: the drive system comprises one to four-gear-four-gear pairs which are reversely arranged along the power output direction of the output shaft.

3. A high speed motor drive system as claimed in claim 2, wherein: the driving gears (Z21, Z22, Z23 and Z24) of the one-four-gear pair are fixedly arranged on the intermediate shaft (S2).

4. A high speed motor drive system as claimed in claim 3, wherein: driven gears (Z31, Z32, Z33 and Z34) of the one-four-gear and four-gear pair are movably sleeved on the output shaft (S3).

5. A high speed motor drive system as claimed in claim 4, wherein: the first clutch (C1) is located between the first and second gear pairs and can be selectively jointed with the driven gears (Z31, Z32) of the first and second gear pairs on two sides.

6. A high speed motor drive system as claimed in claim 4, wherein: the second clutch (C2) is located between the three-and four-gear pairs and is selectively engageable with the driven gears (Z33, Z34) of the two three-and four-gear pairs.

7. A high speed motor drive system according to any one of claims 2 to 6, wherein: except for the fourth gear, the tooth number of the driving gear of each gear is correspondingly smaller than that of the driven gear of each gear.

8. A high speed motor drive system according to any one of claims 1 to 6, wherein: the input gear pair comprises an input driving gear (Z10) and an input driven gear (Z20) which are correspondingly meshed, the input driving gear (Z10) is fixedly connected with an input shaft (S1), and the input driven gear (Z20) is fixedly connected with an intermediate shaft (S2).

9. A high speed motor drive system as claimed in claim 8, wherein: the number of teeth of the input driving gear (Z10) is less than that of the input driven gear (Z20).