CN211314992U

CN211314992U - Two-gear transmission with power output

Info

Publication number: CN211314992U
Application number: CN201922336289.5U
Authority: CN
Inventors: 薛天宝; 雷作钊; 周荣斌; 罗南昌
Original assignee: Fujian Zhongwei Power Technology Co Ltd
Current assignee: Fujian Zhongwei Power Technology Co Ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-08-21
Anticipated expiration: 2029-12-23

Abstract

The utility model discloses a two-gear transmission with power output, which comprises an input shaft, an output shaft, an intermediate shaft, a clutch, a shell and a power motor; the input end of the input shaft and the output end of the output shaft respectively penetrate through two opposite side walls of the shell, the input shaft and the output shaft are arranged on the shell, the input shaft transmits power to the output shaft through the clutch or transmits the power to the intermediate shaft, and the intermediate shaft drives the output shaft to rotate, and is arranged in the shell; the power motor is arranged on the shell, the output end of the power motor is in transmission connection with the intermediate shaft, and the power motor is used for transmitting power to the intermediate shaft. The power source connected with the input shaft drives the speed changer together through the power motor additionally arranged on the intermediate shaft. When the power is needed, the power motor can also independently provide power for the transmission to drive the transmission to work.

Description

Two-gear transmission with power output

Technical Field

The utility model relates to a derailleur field especially relates to a take two gears derailleur of power take off.

Background

The transmission can change different torques input in front and back through different gear changes and different power drives. Through the switching to the different clutches of derailleur, can realize the switching to the different fender position of derailleur, hybrid vehicle system can realize the hybrid drive to the derailleur through installing driving motor additional to the engine simultaneously. The hybrid vehicle has the characteristics of energy saving and low emission. The existing hybrid power system is generally used on a small-sized automobile, the existing large-sized vehicle with hybrid power is relatively overstaffed in structure, and if a power motor is added, two ends of the power motor are generally respectively connected with a speed changer, so that the speed changer is large in size and large in occupied space.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a two-gear transmission with power output to solve the problem that the transmission with a hybrid vehicle occupies a large space.

In order to achieve the above object, the inventor provides a two-gear transmission with power output, the two-gear transmission comprises an input shaft, an output shaft, an intermediate shaft, a first clutch, a second clutch, a shell and a power motor;

the center line of the input shaft and the center line of the output shaft are arranged in a collinear manner, the input end of the input shaft and the output end of the output shaft respectively penetrate through two opposite side walls of the shell and are arranged on the shell, the input shaft transmits power to the intermediate shaft through the first clutch and then transmits the power to the output shaft through the intermediate shaft, the input shaft transmits the power to the output shaft through the second clutch, the intermediate shaft is arranged in the shell, and the center line of the intermediate shaft is parallel to the center line of the input shaft;

one end of the intermediate shaft is in transmission connection with the rotating end of the power motor, the power motor is arranged outside the shell, and the power motor is used for transmitting power to the intermediate shaft.

Further, the first clutch and the second clutch are combined to form a switching double clutch, and the switching double clutch comprises a first clutch block, a second clutch block and a piston unit; the first clutch block is positioned on one side of the piston unit, the second clutch block is positioned on the other side of the piston unit, and the piston unit is used for enabling the first clutch block and the second clutch block to be in clutch;

the clutch device is characterized in that a first gear pair is arranged between the input shaft and the intermediate shaft, a gear of the first gear pair is movably sleeved on the input shaft, another gear of the first gear pair is arranged on the intermediate shaft, a second gear pair is arranged between the output shaft and the intermediate shaft, a gear of the second gear pair is arranged on the intermediate shaft, another gear of the second gear pair is arranged on the output shaft, the first clutch block is used for the clutch of the input shaft and the first gear pair, the second clutch block is used for the clutch of the output shaft and the input shaft, and the first clutch block and the second clutch block are mutually exclusive clutches.

Furthermore, the piston unit comprises a double-end piston body and a cavity, the cross section of the double-end piston body is I-shaped, one end of the double-end piston body is arranged in the cavity, the other end of the double-end piston body is located outside the cavity, and two ends of the cavity are respectively connected with one hydraulic unit.

Further, the first clutch piece comprises a first friction piece group, the second clutch piece comprises a second friction piece group, the first friction piece group is located on one side of the other end of the double-head piston body, the second friction piece group is located on the other side of the other end of the double-head piston body, and the double-head piston body is used for driving one of the first friction piece group or the second friction piece group to be combined and the other friction piece group to be separated.

Furthermore, a key groove is formed in the shaft surface of the intermediate shaft, and the output end of the power motor is fixedly connected into the key groove.

Furthermore, the number of the intermediate shafts is multiple, the intermediate shafts are arranged around the central lines of the input shaft and the output shaft in an annular array mode, the structures of the multiple intermediate shafts are the same, and the multiple intermediate shafts are connected with power motors.

Further, the power motor is a direct current power motor.

Different from the prior art, the technical scheme is additionally arranged on a power motor on an intermediate shaft, and the power motor and the power at the input end of the input shaft drive a transmission together. When the power is needed, the power motor can also independently provide power for the transmission to drive the transmission to work. During the joint operation, the power motor shares the load of the output shaft, and the output of the hybrid power is realized together with the power of the input shaft.

Drawings

Fig. 1 is a simple structural schematic diagram of a two-gear transmission according to an embodiment;

FIG. 2 is a schematic structural diagram of a two speed transmission according to an embodiment;

fig. 3 is a schematic structural diagram of the switching double clutch according to the embodiment.

Description of reference numerals:

1. a second gear speed changer;

101. an input shaft; 102. an output shaft; 103. an intermediate shaft; 104. a housing; 105. a first clutch; 106 a second clutch;

2. a power motor;

3. a switching type double clutch;

301. a first clutch block; 302. a second clutch block; 303. a double-ended piston body; 304. a first gear pair; 305. a second gear pair; 306. a first hydraulic unit; 307. a second hydraulic unit;

3011. a first friction plate set; 3021. a second friction plate set.

Detailed Description

To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.

Referring to fig. 1 to fig. 3, the second-gear transmission with power output of the present embodiment includes an input shaft 101, an output shaft 102, an intermediate shaft 103, a first clutch 105, a second clutch 106, a housing 104 and a power motor 2; the center line of the input shaft 101 and the center line of the output shaft 102 are arranged in a collinear manner, the input end of the input shaft 101 and the output end of the output shaft 102 are respectively arranged on the shell 104 through two opposite side walls of the shell 104, the input shaft 101 transmits power to the intermediate shaft 103 through the first clutch 105 and then transmits the power to the output shaft 102 through the intermediate shaft 103, the input shaft 101 transmits the power to the output shaft 102 through the second clutch 106, the intermediate shaft 103 is arranged in the shell 104, and the center line of the intermediate shaft 103 is parallel to the center line of the input shaft 101; one end of the intermediate shaft 103 is in transmission connection with the rotating end of the power motor 2, the power motor 2 is arranged outside the shell 104, and the power motor 2 is used for transmitting power to the intermediate shaft 103.

Referring to fig. 2 and 3, it should be noted that the rotating end of the power motor 2 and the intermediate shaft 103 may be connected through a transmission connection member or directly connected to drive the operation of the transmission together with the power unit or separately. When the power motor 2 is driven together, the power motor is used as auxiliary power to be matched with a power system for driving; at some time, the power motor 2 can also drive the transmission to work alone, and the power unit can be an engine or an electric motor. The power transmission path of the scheme has the following 5 modes: firstly, the method comprises the following steps: the power unit and the power motor 2 work simultaneously, the power of the input shaft 101 is transmitted to the intermediate shaft 103 through the first clutch 105 and then transmitted to the output shaft 102, and the power motor 2 also transmits the power to the intermediate shaft 103 and then transmitted to the output shaft 102, that is, the two-gear transmission 1 has two power sources at the same time. Secondly, the method comprises the following steps: when the power unit works, the power motor does not work, the first clutch 105 transmits the power of the input shaft 101 to the output shaft 102 after passing through the intermediate shaft 103, and at this time, the power motor 2 does not provide power. Thirdly, the method comprises the following steps: the power unit and the power motor work simultaneously, the power of the input shaft 101 is transmitted to the output shaft 102 through the second clutch 106, the power motor 2 also transmits the power to the intermediate shaft 103, and then the power is transmitted to the output shaft 102 through the intermediate shaft 103, that is, the two-gear transmission 1 has two power sources at the same time. Fourthly: the power unit works, the power motor does not work, the power of the input shaft 101 is transmitted to the output shaft 102 through the second clutch 106, and at the moment, the power motor 2 does not provide power. Fifth, the method comprises the following steps: the two-gear transmission 1 is in a neutral state, and the double-end piston body 303 is not clutched with the first clutch piece 301 and the second clutch piece 302. The power unit does not work, the power motor 2 provides power independently, and the power is directly transmitted to the output shaft 102. The power motor 2 can be a direct current power motor, an alternating current power motor, a permanent magnet synchronous motor and the like.

In this embodiment, the connection between the power motor and the intermediate shaft is a direct connection. Specifically, a key groove is formed in the shaft surface of the intermediate shaft, and the output end of the power motor can be inserted and fixed into the key groove in an interference fit manner. Or the direct connection can be other embodiments, such as the connection between the output end of the power motor and one end of the intermediate shaft is realized through a coupler.

In some embodiments, the connection of the power motor and the intermediate shaft may be a geared connection. Specifically, a gear may be sleeved on an output shaft of the power motor, a gear may be sleeved on the intermediate shaft, and the power motor drives the output shaft to rotate by meshing the gear on the power motor and the gear on the intermediate shaft.

Typically, a clutch will be provided on the power input, with one end of the clutch being connected to the power input and the other end being connected to the power output. In this embodiment, the power input end may be the input shaft 101, and the power output end is a gear rotatably sleeved on the input shaft 101; or the power output end is the output shaft 102, and the power input end is a gear which is rotatably sleeved on the output shaft 102. The first clutch 105 and the second clutch 106 may be friction clutches or the like. In some embodiments, the first clutch 105 and the second clutch 106 are conventional clutch structures, such as a friction clutch and a hydraulic clutch, and the clutches are only used for transmitting power. In the case of friction clutches, one friction clutch is disposed next to each gear of each gear pair. One end of the friction clutch is fixed to the input shaft 101 (or the output shaft 102), the other end of the friction clutch is connected to a gear of the gear pair, the input shaft 101 (or the output shaft 102) and the gear are in transmission when the friction clutch is in an engaged state, and the input shaft 101 (or the output shaft 102) and the gear are not in transmission when the friction clutch is in a disengaged state. It should be noted that in the present embodiment, the transmission is driven by the electric motor additionally mounted on the intermediate shaft 103 together with the existing power unit at the input end of the input shaft 101. When needed, the power motor 2 can also independently provide power for the transmission to drive the transmission to work. In the joint operation, the power motor 2 shares the load of the output shaft, and realizes the output of the hybrid power with the power of the input shaft. Because the power motor 2 is arranged on the intermediate shaft 103 on the side of the speed changer and is not arranged on the output shaft 102, the structure is more compact, the occupied space is reduced, and the purpose of improving the load is achieved.

In this embodiment, the number of the intermediate shafts 103 is multiple, the intermediate shafts 103 are arranged in an annular array around the center lines of the input shaft 101 and the output shaft 102, the multiple intermediate shafts 103 have the same structure, and each intermediate shaft 103 is connected with one power motor 2. The number of the intermediate shafts 103 may be two, three, four, etc. A plurality of intermediate shafts 103 are circumferentially arrayed on the central axis of the input shaft 101 or the output shaft 102, such as: two intermediate shafts 103 may be disposed at upper and lower positions of the input shaft 101 and the output shaft 102, respectively, and four intermediate shafts 103 may be disposed at upper, lower, left, and right positions of the input shaft 101 and the output shaft 102, respectively. The plurality of intermediate shafts 103 have the same structure, and gears having the same number of teeth and the same tooth width are provided. Thus, through the plurality of intermediate shafts 103, the loads of the input shaft 101 and the output shaft 102 can be distributed, and the bending strength on the input shaft 101 and the output shaft 102 is enhanced, so that the bearing capacity of the input shaft 101 and the output shaft 102 is improved, and the purpose of improving the loads is achieved. Meanwhile, through the plurality of power motors 2, under the condition of the same output power, the length of the single body of the plurality of power motors 2 can be greatly reduced relative to one power motor 2, so that the length of the hybrid vehicle can be greatly reduced, and the structure is compact. Particularly in the field of mine cars and the like needing high-power motors, the power motors 2 of the existing passenger cars can be adopted by adopting a plurality of small power motors 2, so that the cost can be greatly reduced.

In order to optimize the structure of the transmission, solve the problem of the conventional transmission that the clutch is jammed during clutch switching, and make the overall structure simpler, the conventional clutch has a structure in which the first clutch 105 and the second clutch 106 are combined into the switching dual clutch 3, and the switching dual clutch 3 includes a first clutch block 301, a second clutch block 302, and a piston unit, please refer to fig. 3. The first clutch block 301 is positioned on one side of the piston unit, the second clutch block 302 is positioned on the other side of the piston unit, and the piston unit is used for enabling the first clutch block 301 and the second clutch block 302 to be in clutch with the piston unit; the piston unit of the dual change-over clutch 3 can only push the first clutch piece 301 or the second clutch piece 302 to be in the engaged state, so that the situation that the clutch pieces are in the engaged state at the same time is avoided. A first gear pair 304 is arranged between the input shaft 101 and the intermediate shaft 103, a gear of the first gear pair 304 is movably sleeved on the input shaft 101, another gear of the first gear pair 304 is arranged on the intermediate shaft 103, a second gear pair 305 is arranged between the output shaft 102 and the intermediate shaft 103, a gear of the second gear pair 305 is arranged on the intermediate shaft 103, another gear of the second gear pair 305 is arranged on the output shaft 102, the first clutch block 301 is used for the clutch of the input shaft 101 and a gear of the first gear pair 304, the second clutch block 302 is used for the clutch of the output shaft 102 and the input shaft 101, and the first clutch block 301 and the second clutch block 302 are mutually exclusive clutches.

In the exemplary embodiment, the dual shift clutch 3 is arranged on the input shaft 101 or the output shaft 102 and is in driving connection with the intermediate shaft 103 or the output shaft 102. Taking the input shaft as an example: a first gear pair 304 is arranged between the input shaft and the intermediate shaft 103, one gear of the first gear pair 304 is movably sleeved on the input shaft 101, the other gear of the first gear pair 304 is arranged on the intermediate shaft 103, a second gear pair 305 is arranged between the output shaft 102 and the intermediate shaft 103, one gear of the second gear pair 305 is movably sleeved on the output shaft 102, and the other gear of the second gear pair 305 is arranged on the intermediate shaft 103. The input shaft 101 and the intermediate shaft 103 are in driving connection via the first gear pair 304, and the output shaft 102 and the intermediate shaft 103 are in driving connection via the second gear pair 305. The first clutch piece 301 (implementing the function of the first clutch 105) of the switching double clutch 3 is used for engaging and disengaging the input shaft 101 with one gear of the first gear pair 304, the second clutch piece 302 (implementing the function of the second clutch 106) of the switching double clutch 3 is used for engaging and disengaging the input shaft 101 with one gear of the second gear pair 305, and the first clutch piece 301 and the second clutch piece 302 of the switching double clutch 3 are mutually exclusive clutches. The power of the input shaft 101 can be transmitted to the intermediate shaft 103 or the output shaft 102 by the gear pair and the switching double clutch 3. The power of the input shaft 101 can be transmitted to the intermediate shaft 103 with different torques through the gear ratio of the gear pair arranged on the input shaft 101, and the power is output to the output shaft 102 through the intermediate shaft 103; or directly transmits the power of the input shaft 101 to the output shaft 102. The gear change of the two-gear gearbox is realized by controlling the change of the torque in the power transmission process.

In this embodiment, the piston unit only needs to be pushed left and right respectively, so that the clutch blocks on the two sides can be engaged and disengaged. In this embodiment, the piston unit comprises a double-ended piston body 303 and a cavity; the cross section of the double-end piston body 303 is i-shaped, one end of the double-end piston body 303 is arranged in the cavity, the other end of the double-end piston body 303 is located outside the cavity, and two ends of the cavity are respectively connected with the first hydraulic unit 306 and the second hydraulic unit 307. The double-end piston body 303 can only promote a separation and reunion piece and gear pair to form and close the state, makes one switching formula double clutch 3 can only realize with a pair of gear pair and close the state, then is the state of leaving with another pair of gear pair, just can not appear the condition that both sides separation and reunion piece are for closing simultaneously, makes the derailleur shift more accurate nimble. Meanwhile, the other end of the double-end piston body 303 is arranged outside the cavity and used for pushing the clutch blocks on the two sides to be in clutch, so that the transverse width of the double-end piston body 303 is reduced, and the structure is compact.

In this embodiment, in order to realize a clutch structure inside the clutch, a clutch manner of friction plates may be adopted, the first clutch block 301 includes a first friction plate set 3011, the second clutch block 302 includes a second friction plate set 3021, the first friction plate set 3011 is located on one side of the other end of the double-ended piston body 303, the second friction plate set 3021 is located on the other side of the other end of the double-ended piston body 303, the first clutch block 301 and the second clutch block 302 are configured to be respectively disposed on gear pairs on both sides, and the double-ended piston body 303 is configured to drive one set of the first friction plate set 3011 or the second friction plate set 3021 to be combined and the other set to be separated. That is, the first clutch plate 301 or the second clutch plate 302 can be clutched by pushing the friction plate of the first clutch plate 301 or the friction plate of the second clutch plate 302 by the double-headed piston body 303.

In the present embodiment, the double-headed piston body 303 is used for pushing the first friction plate group 3011 and the second friction plate group 3021, and in order to provide power to the double-headed piston body 303, the two ends of the cavity of the switching double clutch 3 are respectively connected with the first hydraulic unit 306 and the second hydraulic unit 307, and are used for driving the movement of the double-headed piston body 303. The first hydraulic unit 306 and the second hydraulic unit 307 are arranged in a conducting manner with two ends of the cavity. Consequently only need to the hydraulic oil pressurization back of the hydraulic unit of one side, can make promptly the oil pressure in the cavity is unbalanced, and then the drive double-end piston body 303 is in to the opposite side removal in the cavity reaches the control double-end piston body 303 is in the purpose that removes is carried out to the oil pressure through hydraulic oil in the cavity.

It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications of the embodiments described herein, or the equivalent structure or equivalent process changes made by the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the scope of the present invention.

Claims

1. A two-gear transmission with power output is characterized by comprising an input shaft, an output shaft, an intermediate shaft, a first clutch, a second clutch, a shell and a power motor;

2. A two-gear transmission with power take off according to claim 1, characterized in that the first clutch and the second clutch are combined into a switching double clutch, which comprises a first clutch piece, a second clutch piece and a piston unit; the first clutch block is positioned on one side of the piston unit, the second clutch block is positioned on the other side of the piston unit, and the piston unit is used for enabling the first clutch block and the second clutch block to be in clutch;

3. The two-gear transmission with power output according to claim 2, wherein the piston unit comprises a double-head piston body and a cavity, the double-head piston body is I-shaped in cross section, one end of the double-head piston body is arranged in the cavity, the other end of the double-head piston body is located outside the cavity, and two ends of the cavity are respectively connected with one hydraulic unit.

4. The two-gear transmission with power output of claim 3, wherein the first clutch block comprises a first friction plate set, the second clutch block comprises a second friction plate set, the first friction plate set is located on one side of the other end of the double-head piston body, the second friction plate set is located on the other side of the other end of the double-head piston body, and the double-head piston body is used for driving one of the first friction plate set or the second friction plate set to be combined and the other to be separated.

5. A two-gear transmission with power take-off as claimed in claim 1, wherein a key groove is provided on the axial surface of the intermediate shaft, and the output end of the power motor is fixedly connected in the key groove.

6. A two-gear transmission with power output as claimed in claim 1, wherein there are multiple said intermediate shafts, and said intermediate shafts are arranged in an annular array around the central line of said input shaft and said output shaft, and said multiple intermediate shafts have the same structure, and said multiple intermediate shafts are connected with power motors.

7. A two speed transmission with power take off as claimed in claim 1, wherein the power motor is a dc power motor.