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Hydraulic torque converter and preparation method thereof

A technology of hydraulic torque converter and pressure, applied in the field of hydraulic torque converter and its preparation, can solve the problems such as the uniform thickness blade does not meet the requirements of the fluid mechanics model, the surface quality of castings is poor, and the production efficiency is low, and the production efficiency is achieved. High, good casting quality, good surface roughness effect

Inactive Publication Date: 2013-04-17
TIANJIN DINGFU TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the two manufacturing processes have their own advantages, they both have obvious disadvantages: the integral casting pump wheel and turbine are mainly manual sand casting in China, and the production efficiency is low due to the manual sand casting and metal smelting. The surface quality is poor, the dimensional accuracy is low, and the quality is unstable; the split stamping and welding type pump impeller and turbine use steel plates as stamping materials, so the formed equal-thickness blades do not meet the requirements of the hydrodynamic model, and their performance is worse than that of cast impellers. The welding type needs to be invested in three sets of stamping dies for the outer ring, blade, and inner ring, as well as riveting and welding equipment, so the initial investment cost of process equipment is high

Method used

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  • Hydraulic torque converter and preparation method thereof
  • Hydraulic torque converter and preparation method thereof
  • Hydraulic torque converter and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A hydraulic torque converter, including a pump wheel 5 and a turbine 3, the structure of the pump wheel 5 and the turbine 3 is decomposed into two parts: an outer ring body 9 and an inner ring 7; the outer ring body 9 is a casting, and the outer ring body 9 includes The outer ring and the blades are cast with positioning columns 8 on the blades of the outer ring body; the inner ring 7 is a casting, and the inner ring 7 is provided with positioning holes 6, and the outer ring body 9 and the inner ring 7 are brazed by the positioning columns 8 and The positioning holes 6 are positioned and coupled together.

Embodiment 2

[0029] The preparation method of the hydraulic torque converter described in embodiment 1, its processing process is to decompose the pump wheel and the turbine structure of the hydraulic torque converter into two parts, an outer ring body and an inner ring, and manufacture; the outer ring of the outer ring body The blades are made by pressure casting process; the inner ring is made by pressure casting process, when the outer ring body is pressure cast, positioning columns are cast on the blades, and when the inner ring is pressure cast, positioning holes are made; brazing method is adopted Through the positioning column of the outer ring body and the positioning hole of the inner ring, the outer ring body and the inner ring are positioned and connected as one.

[0030] Brazing process: After the inner ring is installed in place through the positioning column of the outer ring body, the brazing material is placed according to the position of the matching hole, and finally place...

Embodiment 3

[0032] A hydraulic torque converter, including a pump wheel 5 and a turbine 3, the structure of the pump wheel 5 and the turbine 3 is decomposed into two parts: an outer ring body 9 and an inner ring 7; the outer ring body 9 is a casting, and the outer ring body 9 includes The outer ring and the blades are cast with positioning columns 8 on the blades of the outer ring body; the inner ring 7 is a stamping part, and the inner ring 7 is provided with positioning holes 6, and the outer ring body 9 and the inner ring 7 are riveted by the positioning column 8 and positioning Holes 6 are positioned to couple together.

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Abstract

The invention relates to a hydraulic torque converter and a preparation method thereof, and belongs to the technical field of hydraulic transmission. The hydraulic torque converter comprises a pump impeller and a turbine, and is characterized in that: the structures of the pump impeller and the turbine comprise outer ring bodies and inner rings respectively, wherein the outer ring bodies are casting parts and comprise outer rings and blades; the inner rings are casting parts or stamping parts; and each outer ring body is fixed with each inner ring in a brazing or riveting way. The preparationmethod for the hydraulic torque converter is characterized by comprising the following steps of: manufacturing the outer ring bodies and the inner rings of the structures of the pump impeller and theturbine of the hydraulic torque converter; manufacturing the outer rings and the blades of the outer ring bodies by adopting a pressure casting process; manufacturing the inner rings by adopting a pressure casting or stamping process; and brazing or riveting each outer ring body and the inner ring integrally in the brazing or riveting way. The hydraulic torque converter has the advantages of highsize precision, good quality of casting parts, high surface quality, stable performance, safety, reliability, simplified process, high production efficiency, suitability for large-batch production and the like.

Description

technical field [0001] The invention belongs to the technical field of hydraulic transmission, in particular to a hydraulic torque converter and a preparation method thereof. Background technique [0002] At present, the hydraulic torque converter is used in the transmission system to connect between the power source and the load to transmit power. It has many excellent characteristics, such as automatic adaptability, continuously variable speed, good and stable low-speed performance, Vibration reduction, vibration isolation and no mechanical wear, etc., are irreplaceable by other transmission components. The application of hydraulic torque converter is constantly expanding, from automobile, engineering machinery, military vehicles to petroleum, chemical industry, mining, metallurgical machinery and other fields have been widely used. [0003] The structure of the torque converter is composed of three impellers arranged in a certain order, namely the pump wheel, the turbine...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00
Inventor 张成文张晓杰陈飞
Owner TIANJIN DINGFU TECH DEV