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Hydraulic device

A kind of hydraulic equipment and liquid technology, which is applied in the direction of mechanical equipment, fluid pressure actuation device, fluid pressure actuation system components, etc., and can solve problems such as difficult installation of the cylinder body

Active Publication Date: 2018-06-08
KYB CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the pump unit is mounted in this way, the pump or the motor is arranged near the bracket, and it may be difficult to mount the cylinder body on the vehicle.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach ＞

[0017] Hereinafter, the actuator A according to the first embodiment will be described in detail. Such as figure 1 As shown, the actuator A is composed of a cylinder main body S, a pump unit 30 as an oil passage member installed on one side of the cylinder main body S via an extension 40, and a valve unit 20 installed on the other side of the cylinder main body S. , wherein, the composition of the cylinder body S includes: a cylinder body 1; a piston rod 2 inserted into the cylinder body 1 in a free manner; an outer cylinder 3 containing the cylinder body 1 inside; The storage tank T between; and one end of the outer cylinder 3 figure 1 The end cap 4 combined with the left end of the middle; and the other end of the outer cylinder 3 that is figure 1 The ring-shaped piston rod guide 6 combined with the right end in the middle.

[0018] Cylinder body 1 is cylindrical, and one end is figure 1 The left end of the middle is closed by the valve casing 9, and the other end is fi...

no. 2 approach ＞

[0074] Next, the actuator B of the second embodiment will be described. Actuator B differs from Actuator A in that: Figure 5 As shown, the extension part 40 is mounted on the piston rod guide 60 provided at the other end of the cylinder body 1 , that is, the right end in the figure, for supporting the piston rod 2 .

[0075] Here, differences from the actuator A according to the above-mentioned first embodiment will be mainly described, and components having the same functions will be assigned the same reference numerals and descriptions thereof will be omitted.

[0076] Such as Figure 5 As shown, the piston rod guide 60 of the actuator B is formed with a connecting passage 60a opening from the side and communicating with the extension side chamber R1, and a connecting passage 60b opening from the side and communicating with the storage tank T. Furthermore, the connection passage 60b is connected to the suction oil passage 31a of the pump unit 30 as an oil passage member v...

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PUM

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Abstract

This hydraulic device is provided with a cylinder main body (S) which comprises a cylinder (1) and a rod (2) that moves retractably into the cylinder (1), and with a pump unit (30) in which an oil path (31) is formed and which, from the oil path (31), discharges a liquid into the cylinder (1) by driving action of a motor (M), wherein the cylinder main body (S) and the pump unit (30) are linked viaan extension (40) having an oil path (41) which communicates inside the cylinder (1) with the oil path (31) in the pump unit (30).

Description

technical field [0001] The present invention relates to hydraulic equipment. Background technique [0002] As hydraulic equipment installed between a vehicle body and a bogie of a railway vehicle, hydraulic equipment such as shock absorbers and actuators that suppress vibration of the vehicle body by exerting a damping force are known. [0003] In such hydraulic equipment, as disclosed in Japanese Patent JP2006-322501A, a pump unit, a valve unit, etc. are installed on a cylinder main body, wherein the cylinder main body consists of a cylinder body, a piston rod that moves in and out of the cylinder body, a and a piston provided on the end of the piston rod, the pump unit has a pump and a motor for driving the pump, and the valve unit is used to make the cylinder main body function as a shock absorber or an actuator. [0004] Here, there are various methods of mounting the pump unit to the cylinder body. For example, in the hydraulic equipment disclosed in Japanese Patent JP...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/18F15B15/14F16F9/32
CPCF15B15/18F16F9/32F15B1/26F15B15/149F15B15/17F15B15/202F15B15/204F15B21/003F15B2211/20538F15B2211/30565F15B2211/3058F15B2211/411F15B2211/41581F15B2211/50518F15B2211/5159F15B2211/55B61F5/24F15B15/1428F15B15/1447F15B15/1457
Inventor 小川贵之高下拓哉
Owner KYB CORP