double hook rail bender

Specification

1. Rated bending force: 550kN

2. Rated working pressure: 57MPa

3. Piston working stroke: 120mm

4. No-load efficiency: 1.5mm/time

5. Main machine weight: 75kg

Hook weight: 25.5kg

Pump station: 14kg

Other accessories: 9.5kg

6. Dimension: 1150×700×400mm

Working Principle and Basic Structure

Basic structure:

The main frame is welded by high-strength alloy structural materials. The structure of the machine is split type. It is composed of hydraulic power part, straight beam, hook beam and connecting accessories.

1 Plunger pump, 2 Handlebar, 3 Pressure gauge, 4 Reversing valve, 5 High pressure rubber tube, 6 Oil tank, 7 Bending rail working oil cylinder, 8 Bender beam, 9 Hook beam, 10 Support seat, 11 Bender beam head, 12 Hook beam head

Working principle:

Through the bending beam and hook beam fixed to the rail, and then driven by the hydraulic pump station, the bending rail oil cylinder on the straight beam is driven to control the extension and retraction of the oil cylinder, so as to achieve the purpose of straight rail.

Operation

1. Before operation:

(1) The selection of hydraulic oil shall be determined according to the climatic conditions in the area of use. Generally, 68 # anti-wear hydraulic oil should be selected in summer and 32 # anti-wear hydraulic oil should be selected in winter. The height of oil level in the oil tank shall be 2 / 3 of the tank volume;

(2) Whether the connecting fasteners are loose, leaking or leaking.

(3) Swing the control rod to and fro, pull the reversing valve to make the plunger pump work continuously (suction and pressure oil), put the high-pressure oil pressure into the cavity without rod of the working cylinder, make the piston rod extend, then pull the reversing valve in the opposite direction, swing the control rod to and fro, make the plunger pump work continuously (suction and pressure oil), put the high-pressure oil pressure into the cavity with rod of the working cylinder, make the piston rod retract, and check the action of the plunger pump Whether it is flexible and reliable.

2. Bending operation:

(1) Firstly, find out the maximum moment loss point of the rail to be straightened or bent, and indicate the position and direction of straightening or bending

(2) Loosen the sleeper bolts and fasteners on the side to be straightened or bent.

(3) Align the head of the straight beam with the maximum torque loss point to be straightened, support it with the support seat, connect the hook beam with the straight beam (according to the rail type, connect the head of the hook beam with the hook beam and the rail), finally connect the manual hydraulic pump station with the working cylinder of the straight beam, pull the reversing valve according to the operation direction, swing the control rod back and forth, and put the high-pressure oil pressure into the working cylinder, so as to Realize the purpose of rail straightening or bending (determine the amount of straight rail according to the working pressure, rail deformation and pressure holding time).

(4) . generally, the straightening or bending of steel rails can be completed in one operation. If the requirements for straightening or bending rails are not met at one time, multiple operations can be used to ensure the maximum amount of straight rails.

 Operation completed:

(1) Pull the reversing valve handle in the opposite direction and swing the control lever to and fro. After the oil cylinder is completely reset, remove the pin, hook beam, straight beam and manual hydraulic pump station.

(2) . After the operation, lower the rail bending machine out of the limit.

 Maintenance

1. Be sure to keep the cylinder and piston rod clean during operation.

2. The added hydraulic oil shall be filtered and kept clean without dirt and moisture. Generally, it should be replaced once every three months, and replenished at any time in case of too little oil in the oil tank.

3. When the hydraulic oil is too dirty, it is necessary to clean the oil tank and the whole hydraulic system. During cleaning, cotton yarn is not allowed to wipe the matching surface of the oil tank and hydraulic parts.

4. It is not allowed to store in the open or damp place.

5. The seal shall be replaced regularly under normal operation. To ensure the reliability of machines and tools.

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