CN111692231A

CN111692231A - Direct output type friction plate power takeoff

Info

Publication number: CN111692231A
Application number: CN202010610687.6A
Authority: CN
Inventors: 张星辉; 吴利霞; 郝喜斌; 杨罡; 王卫军
Original assignee: China National Heavy Duty Truck Group Datong Gear Co Ltd
Current assignee: China National Heavy Duty Truck Group Datong Gear Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2020-09-22

Abstract

The invention discloses a direct output type friction plate power takeoff. Most friction plate power takeoff devices are in two-stage transmission at present, the power takeoff device with direct output is in power transmission through the engagement of a spline sleeve, and the input end cannot be engaged due to too large rotational inertia in the driving process, so that the connection of the power takeoff device in the driving process cannot be realized. The invention provides a direct output type friction plate power takeoff which can output equal torque and equal rotating speed, can realize the connection of the power takeoff of special vehicles such as a sprinkler in the driving process, provides convenience for operations such as watering and the like, and reduces the operation intensity of a driver.

Description

Direct output type friction plate power takeoff

Technical Field

The invention belongs to the technical field of mechanical transmission for automobiles, and particularly relates to a direct output type friction plate power takeoff.

Background

Most friction plate power takeoff devices are in two-stage transmission at present, the power takeoff device with direct output is in power transmission through the engagement of a spline sleeve, and the input end cannot be engaged due to too large rotational inertia in the driving process, so that the connection of the power takeoff device in the driving process cannot be realized. Some friction plate power take-off devices with working condition two-stage transmission are not suitable, and a direct output type is necessary. For example, when a special vehicle such as a sprinkler is matched and a direct output type power takeoff engaged through a spline sleeve is driven, the power takeoff can be disengaged and cannot be connected, the vehicle can only stop when wanting to be connected with the power takeoff, and then the vehicle is driven after being connected with the power takeoff, so that the operation is very inconvenient, the working strength of a driver is greatly increased, the friction plate power takeoff is adopted and is in two-stage transmission, the structure is complex, the cost is high, the occupied space is large, and the cost of the whole vehicle is increased.

Disclosure of Invention

The invention provides a direct output type friction plate power takeoff to solve the problems.

The invention adopts the following technical scheme: the utility model provides a direct output formula friction disc power takeoff, including the input shaft, the procapsid, the cylinder, the pressure disk, the friction disc, a piston, back casing and main shaft, the input shaft passes through preceding ball bearing to be fixed on the procapsid, and connect through spline and main shaft, the main shaft front end supports on the procapsid through preceding cone bearing, main shaft week side is through friction disc and piston connection, the piston passes through spline and output shaft connection, the piston passes through back ball bearing and supports on the casing of back, the outer disc of cylinder is fixed on the procapsid, circle front end supports on the main shaft in the cylinder, the rear end supports on back cone bearing, back cone bearing supports on the pressure disk, the pressure disk supports on the main shaft, install the spring between pressure disk and the main shaft, be provided with the air flue.

Further, a seal ring III and a seal ring II for sealing with the front housing are respectively arranged on the periphery sides of the front end and the rear end of the cylinder.

Furthermore, the rear shell is inserted and covered at the rear end of the front shell, and the rear shell and the front shell are sealed through a sealing ring I.

The working principle is shown as a structure diagram: when the whole vehicle is ventilated, pressure gas of the whole vehicle enters the cylinder through the air passage, the cylinder pushes the rear conical bearing under the action of the pressure gas, the rear conical bearing pushes the pressure plate, the pressure plate compresses the friction plate after compressing the spring, the friction plate is in a compressed state, the main shaft is connected with the piston to transmit torque, the torque of an input shaft is transmitted to the main shaft through the spline, the main shaft is transmitted to the piston through the friction plate, the piston is transmitted to an output shaft through the spline, torque transmission is realized, and the power takeoff works.

Compared with the prior art, the invention has the following beneficial effects: 1. torque can be transmitted without gear mesh 1: 1; 2. the transmission and interruption of torque can be realized through the friction plate; 3. a pair of conical bearings are installed in the same direction, so that axial force is transmitted to the shell, and stress on other parts is eliminated.

Drawings

FIG. 1 is a schematic structural view of the present invention;

in the figure, 1-a front ball bearing, 2-an input shaft, 3-a front cone bearing, 4-a front shell, 5-a cylinder, 6-a pneumatic switch, 7-a rear cone bearing, 8-a main shaft, 9-a spring, 10-a pressure plate, 11-a friction plate, 12-a piston, 13-a rear shell, 14-a rear ball bearing, 15-an output shaft, 16-a sealing ring I, 17-a sealing ring II, 18-a sealing ring III.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, a direct output friction plate power takeoff is characterized in that: including input shaft 2, front housing 4, cylinder 5, pressure disk 10, piston 12, back casing 13, friction disc 11 and main shaft 8, input shaft 2 fixes on front housing 4 through preceding ball bearing 1, and be connected through spline and

main shaft

8, 8 front ends of main shaft support on front housing 4 through preceding cone bearing 3, 8 week sides of main shaft are connected through friction disc 11 and piston 12, piston 12 is connected through spline and output shaft 15, piston 12 supports on back casing 13 through back ball bearing 14, the outer disc of cylinder 5 is fixed on front housing 4, the circle front end supports on main shaft 8 in cylinder 5, the rear end supports on back cone bearing 14, back cone bearing 14 supports on pressure disk 10, pressure disk 10 supports on the main shaft, install spring 9 between pressure disk 10 and the main shaft 8, be provided with the air flue on front housing 4, install air pressure switch 6 on the air flue of front housing 4.

A seal ring III18 and a seal ring II17 for sealing with front housing 4 are provided on the periphery of the front end and the rear end of cylinder 5, respectively.

The rear case 13 is inserted and capped at the rear end of the front case 4, and the rear case 13 and the front case 4 are sealed by a gasket i 16.

The cylinder axial force transmission is shown in figure 1: the structure is installed in the same direction through two disc conical roller bearings, and the axial force is ingeniously transferred to the shell.

The structures, proportions, sizes, and other dimensions shown in the drawings and described in the specification are for understanding and reading the present disclosure, and are not intended to limit the scope of the present disclosure, which is defined in the claims, and are not essential to the art, and any structural modifications, changes in proportions, or adjustments in size, which do not affect the efficacy and attainment of the same are intended to fall within the scope of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

Claims

1. The utility model provides a direct output formula friction disc power takeoff which characterized in that: comprises an input shaft (2), a front shell (4), a cylinder (5), a pressure plate (10), a piston (12), a rear shell (13), a friction plate (11) and a main shaft (8), wherein the input shaft (2) is fixed on the front shell (4) through a front ball bearing (1) and is connected with the main shaft (8) through a spline, the front end of the main shaft (8) is supported on the front shell (4) through a front cone bearing (3), the peripheral side of the main shaft (8) is connected with the piston (12) through the friction plate (11), the piston (12) is connected with an output shaft (15) through a spline, the piston (12) is supported on the rear shell (13) through a rear ball bearing (14), the outer circular surface of the cylinder (5) is fixed on the front shell (4), the front end of the inner circle of the cylinder (5) is supported on the main shaft (8), the rear end is supported on the rear cone bearing (14), and the rear cone bearing (, the pressure plate (10) is supported on the main shaft, a spring (9) is arranged between the pressure plate (10) and the main shaft (8), an air channel is arranged on the front shell (4), and an air pressure switch (6) is arranged on the air channel of the front shell (4).

2. The direct output friction plate power take-off of claim 1, wherein: the periphery sides of the front end and the rear end of the air cylinder (5) are respectively provided with a sealing ring III (18) and a sealing ring II (17) which are used for sealing with the front shell (4).

3. The direct output friction plate power take-off of claim 1, wherein: the rear shell (13) is inserted and covered at the rear end of the front shell (4), and the rear shell (13) and the front shell (4) are sealed through a sealing ring I (16).