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A hydraulic speed regulating device

A speed regulating device and hydraulic technology, which is applied in the direction of fluid pressure actuation device, transmission device control, engine sealing, etc., can solve the problems of complex hydraulic control system and complex structure, etc.

Active Publication Date: 2011-12-14
JIER MACHINE TOOL GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The utility model aims at the defect that the structure of the current three-position hydraulic shifting device is complicated, which makes its hydraulic control system also very complicated, and provides a hydraulic speed regulating device with a compact structure and easy use

Method used

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Embodiment Construction

[0019] The structural principle of the present utility model is specifically described below in conjunction with the accompanying drawings of the description:

[0020] Refer to attached figure 1 with 2 , the hydraulic speed regulating device of this embodiment includes a cylinder body 15 with a first cavity 14, a second cavity 16 and three oil ports, the inner diameter of the first cavity is greater than the inner diameter of the second cavity, the first oil port 5 and The second oil port 8 is respectively located at the two ends of the first cavity, and the inner outlet of the third oil port is located at the opposite end of the second cavity corresponding to the first cavity, and

[0021] Piston 6 and its piston rod 3 cooperating with the first cavity, the latter two liquid-tight sliding fit, and

[0022] The shaft section 7 connected to the lower end of the piston rod and fluid-tightly engaged with the second cavity has an outer diameter larger than that of the piston rod...

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Abstract

The invention discloses a hydraulic speed regulating device. It includes a cylinder body with a first cavity, a second cavity and three oil ports, and a piston and its piston rod matched with the first cavity. The shaft section at the lower end of the piston rod that is liquid-tightly matched with the second cavity has an outer diameter larger than the outer diameter of the piston rod, and a push rod connected to the lower end of the shaft section and connected to the sliding gearbox at the other end; wherein the piston works The stroke is equal to the displacement from the shifting gear A1 to A2, and the distance from the top dead center to the bottom dead center of the piston rod is equal to the displacement from the sliding gear A1 to A3. The invention provides a hydraulic speed regulating device with compact structure and convenient use.

Description

(1) Technical field [0001] The utility model relates to a hydraulic speed regulating device, which is especially suitable for the occasion where the main milling head reduction box of the machine tool manufacturing industry needs to use triple gears to expand the speed change range. (2) Background technology [0002] The sliding gear mechanism is a more commonly used shifting mechanism in the mechanical transmission mechanism, and the power to realize the movement of the sliding gear in the sliding gear mechanism is usually completed by a hydraulic mechanism, which is called a hydraulic shift mechanism. At present, the hydraulic shifting mechanism is mostly a relatively simple two-speed variable speed hydraulic cylinder combined with a stepless speed regulation motor, which has obtained a wider speed regulation range. However, the stepless speed regulation motor is relatively expensive, and the volume is relatively large when combined with the above-mentioned two-speed varia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/30F15B15/14F16J15/16B23Q5/00
Inventor 韩晓红冯玉环李萌武彩琳
Owner JIER MACHINE TOOL GROUP
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