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Barrier blade device for hydraulic speed reducer

A hydraulic reducer, one-sided technology, applied in the direction of brake components, brake types, mechanical equipment, etc., can solve the problems of unsuitable fixed wheel hydraulic reducer and fixed wheel processing difficulties, etc., to achieve simple structure, Easy to install and cooperate to reduce air loss

Inactive Publication Date: 2011-08-31
CHINA NORTH VEHICLE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the 12th issue of "Automobile Technology" in 2005, "Test Research on Braking Performance of Vehicle Hydraulic Reducer", the moving wheel hydraulic reducer studied in the article has a valve device for reducing air loss in the fixed wheel. This device is mainly composed of compression springs and valve plates, etc. At the same time, holes for pre-installed compression springs must be left in the fixed wheel, which will cause certain difficulties in the processing of the fixed wheel. Liquid type hydraulic reducer, the device is not suitable for fixed wheel hydraulic reducer

Method used

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  • Barrier blade device for hydraulic speed reducer
  • Barrier blade device for hydraulic speed reducer
  • Barrier blade device for hydraulic speed reducer

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Experimental program
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Effect test

Embodiment 1

[0036] Such as figure 1 with figure 2 As shown, a device for reducing the air loss power of a fixed-wheel liquid-fed hydraulic reducer, the device includes a baffle 1, a spring 2, a support seat 3 and a shaft 4, and the upper end surface of the baffle 1 is an arc The curved surface 5 has an arc-shaped groove 6 on the left end surface, and the arc-shaped groove 6 fits the shaft 4 during assembly, and the connection mode between the arc-shaped groove 6 and the shaft 4 is spot welding. The thickness of the right side of the baffle 1 is provided with a gradient along the arc curve direction of the curved surface 5, the gradient slope 7 is a plane, and the side of the baffle 1 containing the gradient slope 7 is the front of the baffle, that is The front of the baffle is composed of two intersecting planes with a certain angle; the back of the baffle is a plane without gradient slope 7 . The spring 2 is sleeved on the shaft 4, the spring 2 is coaxial with the shaft 4, the two end...

Embodiment 2

[0038] The calculation formulas for the braking torque and braking power of the single deceleration braking type vehicle hydraulic retarder are as follows:

[0039] M=γ·λ M n 2 ·D 5 …………………………………………………(1)

[0040] N=γ·λ N n 3 ·D 5 ……………………………………………………(2)

[0041] In the formula: M is the braking torque of the hydraulic reducer;

[0042] N is the braking power of the hydraulic retarder;

[0043] lambda M is the braking torque coefficient of the hydraulic retarder;

[0044] lambdaN is the braking power coefficient of the hydraulic retarder;

[0045] γ is the working fluid weight;

[0046] n is the rotational speed of the driving wheel of the hydraulic reducer;

[0047] D is the effective diameter of the circulation circle of the hydraulic reducer;

[0048] According to the above formulas (1) and (2), the braking torque and power of the hydraulic retarder are respectively proportional to the fifth power of the effective diameter of the circulating circle. The baffle...

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Abstract

The invention discloses a barrier blade device for a hydraulic speed reducer, and belongs to hydraulic auxiliaries. The barrier blade device comprises a barrier blade, a spring, a support seat and an axis; and the upper end surface of the barrier blade is an arc curved surface. In the device, a torsional force of the spring acts on the barrier blade, and partial flow channel is blocked by the barrier blade, namely an effective diameter of a circulation circle of the hydraulic speed reducer is reduced, so an idling torque of the hydraulic speed reducer is reduced, and the purpose of reducing no load power loss of the hydraulic speed reducer is achieved. The barrier blade device is simple in structure and convenient to install, and can effectively reduce the no load loss of a fixed-wheel liquid-inlet type hydraulic speed reducer; furthermore, the reduction of the no load loss of the hydraulic speed reducer can be examined by changing the size of the barrier blade along an axial direction; the device is installed independently, the failed barrier blade is convenient and fast to locate, and the device is easy and convenient to examine and repair.

Description

technical field [0001] The invention belongs to the fields of mechanical manufacturing and vehicle design, and in particular relates to a baffle device for a hydraulic retarder. Background technique [0002] With the development of vehicles in the direction of high-speed and heavy loads, relying only on traditional mechanical friction brakes can no longer meet people's requirements for vehicle safety and comfort, especially for vehicles traveling in mountainous areas and mines (including large-tonnage loads) Cars and large passenger cars), in order to limit the speed of the vehicle when going downhill with a full load, it is necessary to ensure continuous braking for a long time, and use brake shoes to brake frequently on long and large slopes, which will cause the brake shoes to heat up, reduce the friction coefficient, and reduce the braking load. If it is too large, the so-called thermal fading phenomenon of brake braking efficiency will appear, which will seriously affec...

Claims

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Application Information

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IPC IPC(8): F16D65/00
Inventor 吴超周广明吕庆军李吉元徐鸣郭刘洋李慧渊唐守生秦绪情冀海单伟刚
Owner CHINA NORTH VEHICLE RES INST