沈阳拉伸机
Your current location : Home page >> News >> Industry information

Contact

Shenyang Lubang Machinery Co., Ltd

Contact: manager Lin

Tel: 024-86922831

Fax: + 86-024-89648866

Telephone: 13998189555

E-mail: Srmf@163.Com

Postal Code: 110121

web:en.sylbjx.com

Address: Wangyi Development Zone, Shenbei street, Shenbei New District, Shenyang, Liaoning

Maintenance and repair of yft-400 safety hydraulic rail gap adjuster

2021-01-12 16:42:01
second

Maintenance and repair of yft-400 safety hydraulic rail gap adjuster

Maintenance and repair

1. Daily maintenance

1.1 before operation, check whether there is looseness and leakage at all fasteners and seals. If the above conditions are found, deal with them in time.

1.2 dust and oil stain shall be wiped in time to keep machines and tools clean. Check whether all parts are complete and intact, and deal with defective parts in time.

1.3 oil shall be applied frequently between the rail clamping wedge iron and the clamp body to avoid the wedge iron jamming.

2. Regular maintenance

2.1 replace the hydraulic oil every six months. While changing the oil, carefully clean the oil tank to make it clean, and then inject new hydraulic oil.

2.2 disassemble and check all seals and their main connecting and fastening parts. Such as oil tank cover seal, oil pump seal, etc. if the sealing ring is found to be poor or invalid, it shall be replaced at any time. The shaft, pin, safety device, etc. of the running part shall be repaired or replaced in time in case of defects and parts damage.

Common faults and troubleshooting

Common faults

Reason

Exclusion method

The oil pump cannot pump oil

The oil suction and oil outlet channels are blocked, or the steel balls of several safety valves of the check valve are padded with foreign matters, and the steel balls do not reset, resulting in failure.

Open the oil tank cover, remove the plunger and pump seat, clean or treat it, and replace it if necessary.

Poor sealing at the connection of oil pump body, aging, damage or loose connection of O-ring.

Replace the sealing ring

The Y seal ring on the oil pump plunger is damaged.

Replace the sealing ring

The oil return valve is not tightly closed

Disassemble and inspect all parts, replace damaged parts, and tighten the oil return valve.

System pressure too low

The wear of oil pump parts is too limited, the matching clearance is too large, and the pump seat is loose.

Replace, plunger or pump sleeve

The adjusting bolt of the safety valve is loose or the spring of the safety valve fails.

Repair and replace if necessary

The oil return valve is not tightly closed.

Check and repair

Rail clamping failure

The wedge iron of clamping rail is damaged or the tooth surface is seriously worn.

Check the rail wedge and replace it in time if it is damaged.

Insufficient cylinder thrust

The Y-ring seal on the cylinder plunger is damaged.

Replace the sealing ring with a new one.

The reset of two oil cylinders is not synchronized

The tension of the return spring is unbalanced.

Replace the return spring.

Cylinder plunger is deformed or bruised.

Check and replace if necessary

System operating pressure too high or too low

Install a pressure gauge at the screw plug on the side of the main valve body to check the system pressure. When it is less than or higher than 48mpa.

Open the oil filling hole, tighten the constant pressure adjusting nut to the right, press the pump, and observe the pressure gauge. If it is too high, turn it in the opposite direction.

The hand pump works normally, but the extension length of cylinder plunger is not enough

Insufficient hydraulic oil.

Add hydraulic oil.

Oil return failure

The oil return port is blocked.

Unscrew the oil passage plug on the side of the main valve body, drain the oil and replace it with new oil after cleaning.


label

Website of this article:https://en.sylbjx.com/news/461.html
name
phone
message
Code
technical support:KaiHong Technology Liao ICP Bei No. 17001136     Sitemap | RSS | XML
Copyright © Shenyang Lubang Machinery Co., Ltd
  • Home
  • Telphone
  • Top