to determine the hydraulic drive system schematic taboo

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(1) to avoid the combination of loop interfere with each other in the combination of

the basic circuit, with particular attention due to the combination after the loop

memory

Interfere with each other, sometimes not in accordance with the requirements

originally envisaged to action. For example, in the multi-branch loop system (ie hydraulic hose end fittings

with a

A hydraulic pump drive the implementation of more than one component), two hydraulic

cylinders at the same time action, its fuel consumption and pressure changes from

Described in the previous section, the "stress - displacement diagram and flow - high pressure hydraulic fittings

displacement map seen, at the same time the required pressure,

Low pressure to the hydraulic cylinder will take up all the oil pressure to the

Heights hydraulic cylinder is not moving, even to hold high the load fall

To the danger. If you found such a case, or put them in two separate loop (ie with a

different pass of hydraulic pump

Move), or adopt other measures, such as using one-way valve, back pressure valve,

the steady flow valve, pressure reducing valves, sequence valves to be controlled,

so that

Install our request for action. See the power to roll and branch piping allocation stainless steel hydraulic hose fittings

instructions.

(2) to avoid redundant loop to complete the withdrawal of the machine action should

be simple and reliable system. Circuit more complex

, The more the chance of failure, the greater the consumption of power; Also, to

avoid hydraulic transmission as a universal tool for loop attached

Plus too many requirements and harsh conditions (should take into account whether

there are more simple mechanical or electrical transmission mode can be used).

(3) pay attention to the safety and reliability of the system, less trouble parking

time as possible

1) The general control of the maximum unloading relief valve or other safety

measures in the loop.

2) to prevent sudden system overload (see How to prevent hydraulic shock).

3) To prevent the system from overheating.

4) When the actuator failure, consider the circuit to restore the neutral position,

in order to ensure the safety of the machine.

5) to consider the option of using interchangeable and reliable standard equipment,

and prepare the necessary spare parts.

6) For critical systems, in order to avoid malfunction and easy maintenance, if

necessary, consider additional equipment hydraulic pump (or oil source

) And other hydraulic components.

7) In addition, under different circumstan ces, the addition of other safety devices,

such as a stroke limiter, chain switches, and buffers.

(4) Do not ignore the economic problems and the progress of construction in the

system, such as too much consider the ideal requirements, it will increase $

The number of parts or require special components and equipment, increased costs,

loss of the significance of the use of hydraulic drive. In addition, the system

should be more

Standard equipment, to avoid self-designed.