CN110792745A

CN110792745A - Hydraulic torque converter

Info

Publication number: CN110792745A
Application number: CN201911213712.0A
Authority: CN
Inventors: 沈中祥; 许星宇; 石天赐; 尹群; 姚潇; 朱小虎; 张楠
Original assignee: Jiangsu University of Science and Technology; Marine Equipment and Technology Institute Jiangsu University of Science and Technology
Current assignee: Jiangsu University of Science and Technology; Marine Equipment and Technology Institute Jiangsu University of Science and Technology
Priority date: 2019-12-02
Filing date: 2019-12-02
Publication date: 2020-02-14
Anticipated expiration: 2039-12-02
Also published as: CN110792745B

Abstract

The invention relates to the field of hydraulic transmission, in particular to a hydraulic torque converter. The traditional hydraulic torque converter uses hydraulic transmission oil, when the viscosity is small, the transmission efficiency is high, but the abrasion is large, and the oil leakage is easy to lose control. In order to solve the problems, the invention provides a hydraulic torque converter which comprises a shell, wherein the shell seals magnetorheological damping fluid, a blade root disc and an input shaft are arranged in the shell, the blade and the blade root disc are rigidly connected together, the blade root disc is fixed on the input shaft, a wire groove is formed in the edge of the blade, and an excitation coil is wound in the wire groove. The invention improves the impeller of the traditional hydraulic torque converter, replaces the traditional hydraulic working oil with the magnetorheological fluid, and can apply the magnetorheological damping technology to exert the characteristic of adjustable damping force of the magnetorheological fluid. By adjusting the damping coefficient of the hydraulic oil, the working performance of the hydraulic oil is improved in transmission, and the efficiency of the hydraulic torque converter is further improved.

Description

Hydraulic torque converter

Technical Field

The invention relates to the field of hydraulic transmission, in particular to a hydraulic torque converter.

Background

The hydraulic transmission can absorb impact and vibration and has good overload protection performance. Easy start with load and can realize automatic speed change and stepless speed regulation.

The traditional hydraulic torque converter uses hydraulic transmission oil, when the viscosity is small, the transmission efficiency is high, but the abrasion is large, and the oil leakage is easy to lose control. When the viscosity is high, the transmission efficiency is low, the kinetic energy loss is high, and the low-temperature starting is difficult. In the transmission process, the liquid oil is vigorously stirred to generate mechanical shearing, so that macromolecular chains of the oil are sheared. As hydraulic transmission oil, it is required that the dynamic friction factor is small and the ratio of the static friction to the dynamic friction factor is less than 1.0. Too large or too small can adversely affect its use. Corresponding improvements can be made to the problems by referring to the action mechanism of the magnetorheological fluid.

Disclosure of Invention

1. The technical problem to be solved is as follows:

the traditional hydraulic torque converter uses hydraulic transmission oil, when the viscosity is small, the transmission efficiency is high, but the abrasion is large, and the oil leakage is easy to lose control.

2. The technical scheme is as follows:

in order to solve the problems, the invention provides a hydraulic torque converter which comprises a shell 3-1, wherein the shell 3-1 seals magnetorheological damping fluid, a blade 1-1, a blade root disc 3-4 and an input shaft 3-5 are arranged in the shell 3-1, the blade 1-1 and the blade root disc 1-2 are rigidly connected together, the blade root disc 1-2 is fixed on the input shaft 3-5, a wire groove is formed in the edge of the blade 1-1, and an excitation coil 2-2 is wound in the wire groove.

The winding directions of the coils on the blades 1-1 which are formed by the same group are the same.

The head end and the tail end of the blade 1-1 are provided with a guide cover 2-1.

The air guide sleeve 2-1 is made of a magnetic resistance material and used for sealing the whole change of the blade.

The root of the blade 1-1 is a conical key with a sawtooth edge, a notch is formed in the blade root disc 1-2, and the blade 1-1 and the blade root disc 1-2 are buckled together to form a whole.

The blades 1-1 are made of magnetic conductive materials.

The magnet exciting coil 2-2 is connected with an external adjustable current.

3. Has the advantages that:

the invention improves the impeller of the traditional hydraulic torque converter, replaces the traditional hydraulic working oil with the magnetorheological fluid, and can apply the magnetorheological damping technology to exert the characteristic of adjustable damping force of the magnetorheological fluid. By adjusting the damping coefficient of the hydraulic oil, the working performance of the hydraulic oil is improved in transmission, and the efficiency of the hydraulic torque converter is further improved.

Drawings

Fig. 1 is a schematic view of the connection of an impeller to a blade root disk.

Fig. 2 is a first schematic diagram of a single blade modification.

Fig. 3 is a schematic diagram of a single-blade modification.

FIG. 4 is a schematic view of the same turbine damping channel and magnetic circuit.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1-4, the invention provides a torque converter, which comprises a shell 3-1, wherein the shell 3-1 seals magnetorheological damping fluid to ensure the stability of work. The damping device is characterized in that blades 3-3, a blade root disc 3-4 and an input shaft 3-5 are arranged in the shell 3-1, the blades 1-1 and the blade root disc 1-2 are rigidly connected together, the blade root disc 1-2 is fixed on the input shaft 3-5, a wire slot is formed in the edge of each blade 1-1, and an excitation coil 2-2 is wound in the wire slot, so that a unidirectional magnetic field can be generated between adjacent blades when current exists in the coil, a damping channel 3-2 is formed, and the damping coefficient of liquid oil is adjusted.

The magnet exciting coil 2-2 is wound on the wire grooves of the main bodies of the blades 1-1, and the winding directions of the coils on the blades formed by the same group are the same, so that vector currents are introduced into the blades, and an adjustable magnetic field can be formed at the position of the damping channel 3-2.

The guide hoods 2-1 are arranged at the head end and the tail end of the blade 1-1, so that the blank part of the wire groove after the coil is wound is filled, the overall strength of the blade 1-1 is increased, the whole blade 1-1 can be sealed, and the effect on fluid is improved.

The blade 1-1 is made of magnetic conductive material, the excitation coil 2-2 is wound to form a magnetic core part, and the preferred excitation coil 2-2 is wound around the blade 1-1.

The air guide sleeve 2-1 is made of a magnetic resistance material and is used for sealing the whole change of the blade 1-1. Can extend outwards to form a reasonable convection action shape.

The blade of the hydraulic torque converter has two design schemes as shown in fig. 2 and fig. 3, the internal magnetic field of the blade is composed of a blade 1-1 and an excitation coil 2-2, the excitation coil 2-2 forms a magnetic field after being electrified, and the air guide sleeve 2-1 is made of a magnetic resistance material and is arranged to prevent the magnetic field formed by the excitation coil from being interfered by an external magnetic field.

The excitation coil 2-2 is connected with an external adjustable current, and the variable damping technology in the torque converter is achieved by controlling the current parameters, so that the damping coefficient of the liquid oil is adjusted.

When the hydraulic torque converter works, the input shaft is driven to the blade root disc to rotate, the pump wheel is driven to the guide wheel and then driven to the turbine wheel, and then the hydraulic oil circulates in the process, in the process of the hydraulic oil circulation, after the excitation coil is electrified, each blade forms a one-way magnetic field, damping channels are formed among the blades, and the technology of realizing variable damping in the torque converter is achieved by controlling parameters of current, and the damping coefficient of the hydraulic oil is adjusted.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A torque converter comprising a housing (3-1), said housing (3-1) sealing against magnetorheological damping fluid, characterized in that: the novel fan blade is characterized in that blades (1-1), a blade root disc (3-4) and an input shaft (3-5) are arranged in the shell (3-1), the blades (1-1) and the blade root disc (1-2) are rigidly connected together, the blade root disc (1-2) is fixed on the input shaft (3-5), a wire groove is formed in the edge of each blade (1-1), and a magnet exciting coil (2-2) is wound in the wire groove.

2. A hydrodynamic torque converter as defined in claim 1 wherein: the winding directions of the coils on the blades (1-1) which are formed by the same group are the same.

3. A hydrodynamic torque converter as defined in claim 1 wherein: the head end and the tail end of the blade (1-1) are provided with a guide sleeve (2-1).

4. A hydrodynamic torque converter as defined in claim 3 wherein: the air guide sleeve (2-1) is made of a magnetic resistance material and is used for sealing the whole change of the blade.

5. A hydrodynamic torque converter as defined in any one of claims 1-4 wherein: the root of the blade (1-1) is a conical key with a sawtooth-shaped edge, a notch is formed in the blade root disc (1-2), and the blade (1-1) and the blade root disc (1-2) are buckled together to form a whole.

6. A hydrodynamic torque converter as defined in any one of claims 1-4 wherein: the blades (1-1) are made of magnetic conductive materials.

7. A hydrodynamic torque converter as defined in any one of claims 1-4 wherein: the magnet exciting coil (2-2) is connected with an external adjustable current.