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Axle locking cylinder structure for heavy construction equipment
An axle locking cylinder structure is provided. The axle locking cylinder (10) includes a first pilot flow path fed with the hydraulic fluid through the supply flow path to drain a pilot pressure, a poppet valve moved up and down by the pilot pressure to selective open and close a pilot flow path connected to the cylinder chamber (4), the poppet valve (14) having a poppet stepped portion extending from a poppet seat portion towards a front end thereof and having a diameter smaller than that of the pilot flow path, a pressurized chamber (15) formed between the poppet valve (14) and the pilot flow path, a valve spring (16) resiliently supporting the poppet valve (14) downward to close the pilot flow path, a second pilot flow path feeding the hydraulic fluid drained from the cylinder chamber (4) to the return flow path when the pilot flow path is opened, a branched flow path formed between the cylinder chamber and the supply flow path and connected in parallel with the pilot valve to supply the hydraulic fluid to the cylinder chamber (4) when the cylinder rod (3) is expanded, and an adjusting plug (18) coupled to an upper portion of the locking cylinder (10) for adjusting the resilient force of the valve spring (16).
Axle locking cylinder structure for heavy construction equipment
An axle locking cylinder structure is provided. The axle locking cylinder (10) includes a first pilot flow path fed with the hydraulic fluid through the supply flow path to drain a pilot pressure, a poppet valve moved up and down by the pilot pressure to selective open and close a pilot flow path connected to the cylinder chamber (4), the poppet valve (14) having a poppet stepped portion extending from a poppet seat portion towards a front end thereof and having a diameter smaller than that of the pilot flow path, a pressurized chamber (15) formed between the poppet valve (14) and the pilot flow path, a valve spring (16) resiliently supporting the poppet valve (14) downward to close the pilot flow path, a second pilot flow path feeding the hydraulic fluid drained from the cylinder chamber (4) to the return flow path when the pilot flow path is opened, a branched flow path formed between the cylinder chamber and the supply flow path and connected in parallel with the pilot valve to supply the hydraulic fluid to the cylinder chamber (4) when the cylinder rod (3) is expanded, and an adjusting plug (18) coupled to an upper portion of the locking cylinder (10) for adjusting the resilient force of the valve spring (16).
Axle locking cylinder structure for heavy construction equipment
Arbeitszylinderstruktur zur Achsblockierung für schwere Baugeräte
Structure pour un vérin de verrouillage pour l'essieu d'un engin de travaux publics
KIM JONG IN (author)
2019-01-23
Patent
Electronic Resource
English
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