CN211371171U

CN211371171U - Two-gear speed variator with power takeoff

Info

Publication number: CN211371171U
Application number: CN201921475655.9U
Authority: CN
Inventors: 罗天生; 雷作钊; 周荣斌; 薛天宝
Original assignee: Fujian Zhongwei Power Technology Co Ltd
Current assignee: Fujian Zhongwei Power Technology Co Ltd
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2020-08-28
Anticipated expiration: 2029-09-06

Abstract

The utility model provides a two keep off derailleur with power takeoff, including gearbox housing and power takeoff, the power takeoff setting is provided with input shaft, output shaft and switching formula double clutch in the gearbox housing outside the gearbox housing. The utility model discloses setting up the power takeoff in keeping off the derailleur outside, the power takeoff links to each other with the input shaft, and the engine can drive the input shaft and rotate to can drive the inside rotation of power takeoff and drive outside equipment work. And set up the clutch in the power takeoff, when not needing the power takeoff, can break off power takeoff internal connection, avoid the waste of derailleur power.

Description

Two-gear speed variator with power takeoff

Technical Field

The utility model relates to a derailleur field especially relates to two keep off derailleurs with power takeoff.

Background

The input of the two-gear transmission before improvement can be connected with an engine, the output of the two-gear transmission before improvement can be connected with wheels, and then the power input by the engine can be transmitted to the wheels in two different gears according to different gear changes. In the actual working process of the vehicle, the power of the engine may be transmitted to an external working device, such as a hydraulic machine, a lifting pump and the like, and the power is generally achieved through a power takeoff, and the power takeoff needs to be arranged on a two-gear transmission before improvement, so that the purpose of taking power from the transmission is achieved.

SUMMERY OF THE UTILITY MODEL

Therefore, a two-gear transmission with a power takeoff is needed to solve the problem that the two-gear transmission before improvement needs external power takeoff.

In order to achieve the above object, the inventor provides a two-gear transmission with a power takeoff, comprising a transmission housing and a power takeoff, wherein the power takeoff is arranged outside the transmission housing, and an input shaft, an output shaft and a switching type double clutch are arranged in the transmission housing;

the input end of the input shaft protrudes out of the transmission shell, the output end of the output shaft protrudes out of the transmission shell, the input shaft is provided with a first input gear and a second input gear, and the output shaft is provided with a first output gear and a second output gear; the first input gear and the first output gear are meshed with each other, and the second input gear and the second output gear are meshed with each other;

the switching double clutch is arranged between the first input gear and the second input gear;

the switching type double clutch comprises a first clutch block, a second clutch block and a piston unit, wherein the first clutch block is arranged between the piston unit and a first input gear, the second clutch block is arranged between the piston unit and a second input gear, and the piston unit is used for driving the first clutch block or the second clutch block to be in clutch;

the power takeoff comprises a power takeoff shell, a power takeoff shaft unit and a clutch; the power takeoff casing is fixed on the transmission casing, power takeoff axle unit and clutch set up in the power takeoff casing, the one end that the one end of power takeoff axle unit runs through the power takeoff casing is connected with the one end of input shaft for the input, the other end setting of power takeoff axle unit is served at the separation and reunion of clutch, the output of clutch is used for being connected the setting with outside equipment.

Further, an input shaft hole and an output shaft hole are arranged on the transmission shell, the input shaft hole is positioned on one side wall of the transmission shell, the output shaft hole is positioned on the other side wall opposite to the input shaft hole, and the central axis of the input shaft hole and the central axis of the output shaft hole are arranged in parallel; the power input end of the input shaft is sleeved in the input shaft hole, and the power output end of the output shaft is sleeved in the output shaft hole.

Furthermore, the piston unit comprises a double-end piston body, a cavity, a first hydraulic control unit and a second hydraulic control unit, a first oil inlet and a second oil inlet are formed in the cavity, the first hydraulic control unit is connected with the first oil inlet, the second hydraulic control unit is connected with the second oil inlet, the first hydraulic control unit and the second hydraulic control unit are used for driving the double-end piston body to move, and the double-end piston body is used for performing clutch driving on the first clutch block or the second clutch block.

Further, the cross section of double-end piston body is the I shape, the double-end piston body includes sealing ring, drive ring and go-between, the go-between sets up between sealing ring and drive ring.

Further, the cavity is provided with a piston groove, an engaging groove is formed in the outer wall of one side of the cavity, a notch is formed between the engaging groove and the piston groove, the sealing ring is arranged in the piston groove, the driving ring is located in the engaging groove, and the connecting ring is located in the notch.

Furthermore, the power take-off shaft unit comprises a transmission shaft, wherein external teeth are arranged at one end of the transmission shaft, a baffle plate is arranged at the other end of the transmission shaft, and the baffle plate is arranged between a piston of the clutch and the friction plate.

Further, the clutch comprises a piston unit, a friction plate set and a clutch housing;

the piston unit is sleeved on a baffle of the transmission shaft, the friction plate group is arranged on the clutch shell, the piston unit is positioned on one side of the friction plate group, and the clutch shell is rotatably sleeved in the power takeoff shell.

Further, the piston unit comprises a driving piston, an executing piston and a bearing, the bearing is arranged between the driving piston and the executing piston, the executing piston is sleeved on the baffle, and the executing piston is located on one side of the friction plate set.

Further, the clutch housing includes clutch outer shell and clutch inner shell, the rotatable cover of clutch outer shell is established in the power takeoff casing, the clutch outer shell is provided with the hole spline, the clutch inner shell is provided with the spring centre bore.

Furthermore, the friction plate set comprises friction plates and steel plates, the friction plates and the steel plates are positioned between the clutch outer shell and the clutch inner shell, and the friction plates and the steel plates are arranged in a one-to-one staggered mode;

the friction disc sets up on clutch outer shell, the steel sheet sets up on clutch inner shell, perhaps: the steel sheet is arranged on the outer shell of the clutch, and the friction plate is arranged on the inner shell of the clutch.

Be different from prior art, above-mentioned technical scheme is keeping off the derailleur outside and setting up the power takeoff, and the power takeoff links to each other with the input shaft, and the engine can drive the input shaft and rotate to can drive the inside rotation of power takeoff and drive outside equipment work. And set up the clutch in the power takeoff, when not needing the power takeoff, can break off power takeoff internal connection, avoid the waste of derailleur power.

Drawings

FIG. 1 is a block diagram of a two speed transmission configuration in accordance with one embodiment;

FIG. 2 is a cross-sectional view of a power take-off configuration in accordance with one embodiment;

FIG. 3 is a cross-sectional view of a dual shift clutch for a two speed transmission configuration in accordance with an exemplary embodiment;

FIG. 4 is a partial schematic view of the dual shift clutch of the two speed transmission configuration in accordance with one embodiment;

FIG. 5 is a schematic diagram of a double-ended piston body of a two-speed transmission configuration in accordance with an exemplary embodiment.

Description of reference numerals:

10. an input shaft;

11 a first input gear;

20. an output shaft;

21. a first output gear;

12. a second input gear; 22. a second output gear;

50. a switching type double clutch;

501. a first clutch block; 502. a second clutch block; 503. a piston unit;

5031. a double-ended piston body; 5032. a cavity; 5033. a first hydraulic control unit;

5034. a second hydraulic control unit; 5035. a first oil inlet; 5036. a second oil inlet;

5037. a piston groove; 5038. a clutch groove; 5039. a notch;

5011. a first friction plate set; 5021. a second friction plate set;

50311. a seal ring; 50312. a drive ring; 50313. a connecting ring;

40. a transmission housing;

41. an input shaft hole; 42 an input shaft support end shaft hole; 43 output shaft support end shaft hole 44, output shaft hole;

431. an end cap; 411. a first dust cover; 411. a second dust cover;

800. a power takeoff; 900. an external working device;

810. a power takeoff housing; 811. an oil inlet hole;

820. a power take-off shaft unit; 821. a drive shaft; 822. a return spring;

823. an outer tooth; 824. a baffle plate;

830. a clutch;

831. a piston unit; 832. a drive piston; 833. an actuator piston; 834. a bearing;

840. a friction plate set; 841. a friction plate; 842. a steel sheet;

850. a clutch housing; 851. a clutch housing; 852. a clutch inner housing;

853. an inner bore spline; 854. a spring center hole;

801. inner hole teeth.

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 5, the second-gear transmission 1 with a power takeoff provided in this embodiment includes a transmission housing 40 and a power takeoff 800, the power takeoff is disposed outside the transmission housing, the transmission housing includes a transmission component for implementing a speed change function, and the power takeoff is used for taking power from the transmission and then driving an external working device to rotate. The power take-off comprises a power take-off housing 810, a power take-off shaft unit 820 and a clutch 830, which are mounted within the power take-off housing. The transmission housing 40 is internally provided with an input shaft 10, an output shaft 20 and a switching type double clutch 50; the input shaft, the output shaft and the switching type double clutch are arranged in a transmission shell, and the input end of the input shaft protrudes out of the transmission shell and can be connected with an engine. The output end of the output shaft protrudes out of the transmission shell, and the output end of the output shaft and the first output gear or the second output gear are on the same axis and can be connected with wheels to drive the wheels to rotate. In this embodiment, two gear sets are provided, which are: the gear sets of the first input gear 11 and the first output gear 21, the gear sets of the second input gear 12 and the second output gear 22, and the tooth number ratios of the two gear sets are different, so that the power input and output by the transmission is changed, and the purpose of gear shifting is achieved. The power of the input shaft can be transmitted to the output shaft through the first input gear and the first output gear or the second input gear and the second output gear and output to the wheels. The corresponding transmission is manufactured through the transmission structure, can be applied to mine cars and can also be applied to cars, trucks, buses or buses and the like, the effect of occupying smaller car body volume is achieved, the practicability of the transmission structure is improved, and the production cost of the vehicles is reduced.

In the embodiment, power is input from the input shaft 10, so that the first input gear 11 or the second input gear 12 can be driven to rotate along with the input shaft. The first input gear 11 and the second input gear 12 are controlled by using the switching double clutch 50, that is, the switching double clutch 50 can control one of the first input gear 11 or the second input gear 12 to input power. Thereby controlling the first output gear 21 or the second output gear 22 to perform power output. The switching of two gears is realized through the transmission of two pairs of gears, the control switching of the switching type double clutch 50 is realized, the purpose of zero-time waiting during gear shifting is achieved, and the practicability and the reliability of the transmission are greatly improved. When power is required to be taken, the engine drives the input shaft to rotate, then the clutch of the power take-off is driven to be combined, the input shaft can drive the clutch to rotate and then drive the external working device to rotate, and the power taking effect of the transmission is achieved.

In this embodiment, the power takeoff casing of the power takeoff can be divided into three parts: front end housing, side power takeoff casing and rear end housing, power takeoff axle unit have included transmission shaft 821 and return spring 822, are provided with external tooth 823 at transmission shaft one end. And a baffle 824 is provided at the other end of the drive shaft and may be a circular end plate having a diameter greater than the diameter of the drive shaft. For compact engagement with the clutch, the clutch includes a piston unit 831 including a drive piston 832, an actuator piston 833 and a bearing 834, a friction plate set 840 and a clutch housing 850. The execution piston is sleeved on the baffle plate, so that the execution piston can rotate along with the baffle plate, and the execution piston and the driving piston are sleeved through the bearing, so that the driving piston is static relative to the execution piston. And the purpose of driving the execution piston to move is achieved by driving the driving piston to move, so that the friction plate set of the clutch can be driven to achieve the purpose of clutching.

In the above embodiment, in order to realize the connection between the input shaft of the transmission and the power takeoff, the end face of the input shaft opposite to the input end may be provided with the inner hole teeth 801, and the outer teeth of the transmission shaft of the power takeoff are meshed with the inner hole teeth, so that the effect that the input shaft synchronously drives the transmission shaft to rotate is realized.

In this embodiment, an oil inlet hole 811 is formed in the side wall of the power takeoff housing, and is communicated with the piston cavity of the driving piston through the oil inlet hole, and a hydraulic oil pump is connected and communicated with the oil inlet hole, so that the clutch can be controlled by controlling the input and output of hydraulic oil from the hydraulic oil pump.

In this embodiment, the clutch housing includes a clutch outer 851 and a clutch inner 852, the clutch inner is provided with a spring center hole 854, a return spring is installed in the spring center hole, and the other end of the return spring is connected to the plate surface of the baffle plate, so that when the piston unit is pushed through the oil inlet hole to move for the closing operation, the baffle plate will move along with the return spring and press the return spring, so that the spring has a compression force. The compression force can be released when the piston unit is in off-state operation, and the purpose of pushing the transmission shaft to return is achieved.

The clutch housing is provided with female splines 853, the centerline of which may be collinear with the centerline of the driveshaft in this embodiment. The clutch can be connected with an external working device through the inner hole spline, the power takeoff structure can drive the external working device to work when the clutch is in a closed state, and the external working device is in a stop state when the clutch is in a separated state. And the external working device is a hydraulic pump, an air pump, or a generator, etc.

The clutch inner shell is sleeved in the clutch outer shell, and the friction plate set is arranged between the clutch outer shell and the clutch inner shell in the embodiment, and comprises a friction plate 841 and a steel sheet 842, the friction plate can be arranged on the clutch outer shell, and the steel sheet is arranged on the clutch inner shell; alternatively, the friction plates are mounted on the clutch inner housing and the steel plates are mounted on the clutch outer housing. The friction plates and the steel sheets can be arranged in a plurality, and the friction plates and the steel sheets are installed in a staggered mode one by one. Thereby achieving the clutch effect and transmitting the power to the external working device through the clutch shell of the clutch.

In the present embodiment, the dual switching clutch includes a first clutch block 501, a second clutch block 502, and a piston unit 503. Thus, the path for the first gear is: when the switching type double clutch 50 selects the first clutch block 501 to input power, the first clutch block 501 controls the first input gear 11 to be in a closed state, and the second clutch block 502 controls the second input gear 12 to be in a separated state, so that the power of the input shaft 10 is transmitted to the output shaft 20 by the mutual meshing of the first input gear 11 and the first output gear 21, and the output shaft 20 is driven to rotate; a power transmission path of the first gear is formed.

Similarly, the path of the second gear is as follows: when the switching type double clutch 50 selects the second clutch block 502 to input power, the first clutch block 501 controls the first input gear 11 to be in a disengaged state, and the second clutch block 502 controls the second input gear 12 to be in an engaged state, so that the power of the input shaft 10 is transmitted to the output shaft 20 by the mutual engagement of the second input gear 12 and the second output gear 22, and the output shaft 20 is driven to rotate; a power transmission path of the second gear is formed.

The switching type dual clutch 50 in this embodiment includes a first clutch block 501, a second clutch block 502 and a piston unit 503, wherein the piston unit includes a double-headed piston body 5031, a cavity 5032, a first hydraulic control unit 5033 and a second hydraulic control unit 5034, a piston groove 5037 is formed in the cavity 5032, a clutch groove 5038 is formed in the outer wall of one side of the cavity 5032, a notch 5039 is formed between the clutch groove 5038 and the piston groove 5037, a first oil inlet 5035 is formed at one end of the piston groove 5037, and a second oil inlet 5036 is formed at the other end of the piston groove 5037. One end of the first clutch piece 501 is provided with a first friction piece set 5011, and one end of the second clutch piece 502 is provided with a second friction piece set 5021. Therefore, by driving the double-headed piston body 5031 to move in the piston groove 5037, the double-headed piston body 5031 drives the first friction plate group 5011 or the second friction plate group 5021, so that one of the first friction plate group 5011 or the second friction plate group 5021 is combined with the other and separated from the other, and the switching type dual clutch 50 can simultaneously control the mutual exclusion switching of the two gear pairs.

In this embodiment, the first friction plate set 5011 and the second friction plate set 5021 are arranged in the same structure, and the components may be a friction plate and a steel plate or a friction plate and a friction plate, which are described as an example in this embodiment. Mounting the friction plate on the clutch block, and mounting the steel sheet on the outer side surface of the cavity 5032; on the contrary, the friction plate can be installed on the outer side surface of the cavity 5032, and the steel sheet is installed on the clutch block, so as to form the mutual contact friction effect between the friction plate and the steel sheet, thereby performing the clutch operation on the gear connected on the clutch block.

The double-headed piston body 5031 in this embodiment has an i-shaped cross section, and the double-headed piston body 5031 includes a seal ring 50311, a drive ring 50312, and a connection ring 50313, and the connection ring 50313 is provided between the seal ring 50311 and the drive ring 50312. Therefore, the double-headed piston 5031 is arranged in the cavity 5032 and driven by different hydraulic control units, so that the double clutch ends of the switching double clutch 50 perform different clutch operations. Specifically, the seal ring 50311 is disposed in the piston groove 5037 and performs a sealing process with the inner side surface of the piston groove 5037, while the drive ring 50312 is disposed in the clutch groove 5038 and the connection ring 50313 is disposed in the notch. The first hydraulic control unit 5033 is used for injecting hydraulic oil into the piston groove 5037 through the first oil inlet 5035, and the second hydraulic control unit 5034 is used for injecting hydraulic oil into the piston groove 5037 through the second oil inlet, so that the hydraulic oil with the same pressure at the two ends of the sealing ring 50311 is controlled, and the double-end piston body 5031 is arranged in the middle of the piston groove 5037 of the cavity 5032 and is balanced to achieve the initial preparation state.

When the shift range is switched, the first hydraulic control unit 5033 injects hydraulic oil into the piston groove 5037 of the cavity 5032, so that the whole double-headed piston body 5031 moves towards the second friction plate set 5021 at once, and the second input gear 12 is operated in the engaged state. Similarly, when the second hydraulic control unit 5034 injects hydraulic oil into the piston groove 5037 of the cavity 5032, the double-headed piston body 5031 moves toward the first friction plate set, and performs a closing operation on the first input gear, so as to achieve a gear replacement effect with zero waiting time. The principle is as follows: when the first hydraulic control unit 5033 or the second hydraulic control unit 5034 injects hydraulic oil into the piston groove 5037 of the cavity 5032 again, when the pressure at one end of the piston groove 5037 is greater than the pressure at the other end of the piston groove 5037, the oil pressure in the piston groove 5037 of the cavity 5032 is unbalanced, so as to drive the double-headed piston body 5031 to move in the piston groove 5037 of the cavity 5032, and drive friction is performed on the first or second friction plate set 5021 through the double-headed piston body 5031, so as to achieve the clutch effect. After the initial state or the operating switching type dual clutch 50 has power input, the preparation time for driving the double-headed piston 5031 to move is zero, and the time length of the clutch structure during clutch is shortened.

When the switching double clutch 50 is operated to be in the clutch state, and one clutch piece is operated to be in the clutch state, the other clutch piece is simultaneously operated to be in the clutch state, the switching double clutch 50 is operated to be in the first clutch state, and the double-headed piston 5031 of the switching double clutch 50 is kept in the first clutch state. When the clutch operation is carried out again, the clutch states of the two clutch blocks are opposite, and the two clutch blocks are switched simultaneously, so that the effect of mutually exclusive switching of the two groups of gear pairs is achieved.

And the two related hydraulic control units also perform oil return or filling operation correspondingly. The hydraulic control unit connected with the off state performs oil return, and the hydraulic control unit connected with the on state performs oil injection, so that the switching type double clutch can control the two gear pairs to perform clutch operation. Wherein the hydraulic control unit can be operated by the composition of the solenoid valve and the hydraulic pump. The pressure of a pipeline between the hydraulic pump and the oil inlet of the piston groove 5037 is adjusted by the electromagnetic valve, so that the hydraulic pump performs oil injection or oil return operation on the piston groove 5037, and the purpose of driving the double-end piston body 5031 is achieved.

In this embodiment, the transmission case may be provided with an input shaft hole 41, an output shaft hole 44, an input shaft support end shaft hole 42, and an output shaft support end shaft hole 43. The input shaft 10 is installed in the input shaft hole 41, the output shaft 20 is installed in the output shaft hole 42, one end of the input shaft 10 is a power input end, and the other end is an input shaft support end 42. Similarly, one end of the output shaft 20 is a power output end, and the other end thereof is an output shaft support end.

Further, since the input shaft hole 41 is located on one side wall of the transmission case, the input shaft support end shaft 42 is located on the other side wall of the transmission case opposite to the input shaft hole 41, the output shaft hole 44 is located on the other side wall of the transmission case opposite to the input shaft hole, the output shaft support end shaft hole 43 is located on the other side wall of the transmission case opposite to the output shaft hole, the center axis of the input shaft hole 41 and the center axis of the output shaft hole 44 are arranged in parallel to each other, the center axis of the input shaft hole 41 and the center axis of the input shaft support end shaft hole 42 are collinear, and the center axis of the output shaft hole 44 and the center axis of the output shaft. The input shaft 10 is installed in the input shaft hole through a bearing or a shaft sleeve, the output shaft 20 is also installed in the output shaft hole through a bearing or a shaft sleeve, the support end of the input shaft is installed in the support end shaft hole through a bearing or a shaft sleeve, and the support end of the output shaft is installed in the support end shaft hole through a bearing or a shaft sleeve, so that the central axis of the input shaft and the central axis of the output shaft are parallel to each other.

In this embodiment, two support end shaft holes on the transmission housing are sealed by the end cover 431, and the input shaft hole and the output shaft hole are sealed by the dust cover 411, so that the power input end of the input shaft can pass through the through hole on the first dust cover 411 and be located outside the transmission housing, and similarly, the power output end of the output shaft passes through the through hole on the second dust cover 441 and is located outside the transmission housing, thereby achieving the purpose of being connected with other devices. The problems that the gear parts in the speed changer are corroded, aged, stuck or abraded and the like due to the fact that dust and water vapor in the air enter the speed changer are avoided. Thereby improving the practicability of the two-gear transmission structure.

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 protection scope of the present invention.

Claims

1. Two keep off derailleur with power takeoff, its characterized in that: the power takeoff is arranged outside the transmission shell, and an input shaft, an output shaft and a switching type double clutch are arranged in the transmission shell;

2. The two-speed transmission with a power take off of claim 1, wherein: the transmission shell is provided with an input shaft hole and an output shaft hole, the input shaft hole is positioned on one side wall of the transmission shell, the output shaft hole is positioned on the other side wall opposite to the input shaft hole, and the central axis of the input shaft hole and the central axis of the output shaft hole are arranged in parallel; the power input end of the input shaft is sleeved in the input shaft hole, and the power output end of the output shaft is sleeved in the output shaft hole.

3. The two-speed transmission with a power take off of claim 1, wherein: the double-end clutch device comprises a piston unit and is characterized in that the piston unit comprises a double-end piston body, a cavity, a first hydraulic control unit and a second hydraulic control unit, a first oil inlet and a second oil inlet are formed in the cavity, the first hydraulic control unit is connected with the first oil inlet, the second hydraulic control unit is connected with the second oil inlet, the first hydraulic control unit and the second hydraulic control unit are used for driving the double-end piston body to move, and the double-end piston body is used for driving a first clutch block or a second clutch block to be in clutch driving.

4. The two-speed transmission with a power take off of claim 3, wherein: the cross section of double-end piston body is the I shape, the double-end piston body includes sealing ring, drive ring and go-between, the go-between sets up between sealing ring and drive ring.

5. The two-speed transmission with a power take off of claim 4, wherein: the cavity is provided with a piston groove, an engaging groove is formed in the outer wall of one side of the cavity, a notch is formed between the engaging groove and the piston groove, the sealing ring is arranged in the piston groove, the driving ring is located in the engaging groove, and the connecting ring is located in the notch.

6. The two-speed transmission with a power take off of claim 1, wherein: the power take-off shaft unit comprises a transmission shaft, wherein external teeth are arranged at one end of the transmission shaft, a baffle is arranged at the other end of the transmission shaft, and the baffle is arranged between a piston of the clutch and the friction plate.

7. The two-speed transmission with a power take off of claim 6, wherein: the clutch comprises a piston unit, a friction plate set and a clutch shell;

8. The two-speed transmission with a power take off of claim 7, wherein: the piston unit comprises a driving piston, an executing piston and a bearing, the bearing is arranged between the driving piston and the executing piston, the executing piston is sleeved on the baffle, and the executing piston is located on one side of the friction plate set.

9. The two-speed transmission with a power take off of claim 7, wherein: the clutch shell comprises a clutch outer shell and a clutch inner shell, the clutch outer shell is rotatably sleeved in the power takeoff shell, the clutch outer shell is provided with an inner hole spline, and the clutch inner shell is provided with a spring center hole.

10. The two-speed transmission with a power take off of claim 9, wherein: the friction plate set comprises friction plates and steel sheets, the friction plates and the steel sheets are positioned between the clutch outer shell and the clutch inner shell, and the friction plates and the steel sheets are arranged in a one-to-one staggered mode;