Synchronous hydraulic system for synchronous retraction and extension of sub-hoist hydraulic lines of sub-hoist drainage vehicle

CN224396835UActive Publication Date: 2026-06-23FUJIAN LONGMA ENVIRONMENTAL SANITATION EQUIP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
FUJIAN LONGMA ENVIRONMENTAL SANITATION EQUIP
Filing Date
2025-06-10
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing mother-daughter type drainage trucks are inefficient during the hydraulic pipeline deployment and retraction process and are prone to dragging or being crushed, and the load-sensitive proportional valve adjustment cost is high.

Method used

The hydraulic system for synchronous winding and unwinding of the hydraulic lines of the mother-daughter type drainage truck is adopted. It includes a hydraulic oil tank, hydraulic pump, distribution valve, daughter car solenoid directional valve, daughter car travel motor, pressure reducing valve, flow valve, reel solenoid directional valve, hydraulic control directional valve, back pressure valve and reel motor. Synchronous winding and unwinding are achieved by controlling the oil circuit connection to ensure that the hydraulic lines of the reel are kept taut.

Benefits of technology

It improves work efficiency, avoids hydraulic lines dragging on the ground or being damaged by pressure, and reduces control complexity and cost.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a child -parent car formula drainage car child -parent car hydraulic pipeline synchronous retraction hydraulic system, including hydraulic oil tank, hydraulic pump, distribution valve, child car electromagnetic reversing valve, child car walking motor, pressure reducing valve, flow valve, reel electromagnetic reversing valve, hydraulic control reversing valve, back pressure valve and reel motor. Adopt above structure, child car advances the retreat process all can guarantee that reel hydraulic pipe retraction is in the taut state, will not appear to mop, the broken condition, not only has improved work efficiency, simultaneously need not complex control mode, can control cost's time reaches good effect.
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