Hydraulic exciting device

A vibration excitation device and hydraulic technology, applied in the direction of fluid pressure actuation device, fluid using vibration, fluid pressure actuation system components, etc. Problems such as large mass of excitation vibration and vibration

Inactive Publication Date: 2007-11-28
TAIYUAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The problem to be solved by the present invention is that the vibration mass and energy consumption of the existing pump-controlled motor inertial excitation are large; the excit

Method used

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  • Hydraulic exciting device

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings by taking a vibration pump of a four-plunger cylinder driving two vibration cylinders as an example.

[0022] The hydraulic vibration excitation device in Figure 1 includes a frequency conversion control system, a hydraulic pump station, and an excitation cylinder. The frequency conversion control system includes a frequency converter and a programmable controller, and adopts PLC programming; the hydraulic pump station includes a frequency conversion motor 21, a double pump 23 (charge pump and oil pump), a vibration pump, a charge valve 8, an overflow valve I 9, Electromagnetic reversing valve 11, back pressure valve group 12, low-pressure shuttle valve 13, low-pressure relief valve 18 and hydraulic pipeline 10; excitation cylinder 17 is a double-acting single-rod hydraulic cylinder, the number of which depends on the excitation point required by the system Conf...

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Abstract

The invention discloses a hydraulic exciting device, comprising conversion control system, hydraulic pump station and exciting oil cylinder. The hydraulic pump station comprises conversion motor and it also comprises twin pump, vibration pump, oil supply valve, overflow valve, electromagnetic switching valve, back-pressure valve group, low-pressure spindle valve and low-pressure overflow valve, which are connected by hydraulic pipes. The vibration pump adopts crank-shaft mechanism to drive the piston move to and fro in cylinder. A pair of outlets of piston cylinder of vibration pump set symmetrically are connected with cavity with bar and cavity without bar of exciting oil cylinder by hydraulic pipes respectively to constitute the closed loop. Because the invention adopts twin piston vibration pump vibration parameters can be adjusted separately in stepless and energy consumption is low. Single-point excitation or multi-point excitation can be adopted to satisfy the requirement for mining with middle frequency and large amplitude. It is suitable for linear vibration equipment and vibration test-bed. Especially it is suitable for mining, power generating, sugar producing and salt producing so on.

Description

technical field [0001] The invention relates to a hydraulic vibration excitation device, in particular to a hydraulic vibration excitation device which utilizes frequency conversion speed regulation technology to adjust the rotational speed of a vibration pump, controls the reciprocating motion of an excitation oil cylinder through a closed hydraulic circuit, and drives vibration equipment to generate linear vibration. Background technique [0002] The excitation mode of existing vibration equipment in our country is mainly inertial excitation mode. Most of the vibrating screens used in the screening system with an annual output of more than 2 billion tons of coal are linear vibrating screens based on inertial excitation. For example, the ZKX linear vibrating screen is driven by the motor through the V-belt to drive the transmission shaft of the vibrator to make the vibrator work, and its vibration is inertial excitation. The vibrator is a vibrator with a box-type eccentric...

Claims

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Application Information

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IPC IPC(8): F15B21/12B06B1/16F15B13/02
Inventor 寇子明廉红珍吴娟李军霞卫进高贵军
Owner TAIYUAN UNIV OF TECH
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