marine wholesale pneumatic driven mucking winches air winch 5 ton

Product Overview

Description

 

General situation and application of pneumatic winch 

QJH series pneumatic winch,is hand-operated type winch taking a piston or blaed-type air motor as powered single drum,the winch is mainly used for hauling such as metal mining,coal mining and oteher mining,construction and other departments ,or Oil field to enhance the heavy objects.

Because it has the characteristics of small volume,light weight,adjustable speed,easyhandling and quick installation,it is more suitable for dowmhole operation of minimg mine,such as in the digging wells,the dispatching of the working face on the loading station,haulingtub and in the narrow lane to enhance the traction tools,equipment and other heavy objects.

 

Gaston pneumatic winch structure and working principle
The QJH series of pneumatic winches are powered by air, through piston-type wind-pneumatic machines and have two groups.
The speed reduction mechanism of the external gear drive pair drives the operation of the drum to achieve its purpose of hoisting. Main knot
Construction includes air motors, gearboxes, rollers and brakes. Ball or ball bearings are used for each transmission
Support and flexible operation. The main parts are mostly made of high-strength high-quality alloy steel and chemically treated.
Give parts a long life.

Air motor

The air motor is composed of an on-off valve assembly and a valve assembly, and six sets of connecting rods and pistons connected to the crankshaft.
It consists of main parts such as cylinders. The operating principle of the piston air motor is basically similar to that of the internal combustion engine.
When the handle is pushed to the starting position, the compressed air enters the valve through the switching valve, and the valve enters the valve spool.
Make it rotate. At the same time, the rotation of the valve spool successively feeds the compressed gas into the surrounding six cylinders.
The rotation of the piston, the connecting rod and the crankshaft is promoted by the expansion of the compressed gas in the cylinder.
When the piston is pushed to the "bottom dead center", the valve spool is also transferred to the first exhaust position, after expansion
The gas (still with pressure), that is, it is directly discharged from the cylinder through the venting port of the valve.
At the same time, the rotation of the piston by the crankshaft is pushed to the "top dead center" of the cylinder (the valve spool also turns)
To the second exhaust position), the remaining gas in the cylinder is exhausted from the exhaust port of the valve assembly.
Through such reciprocating use, the crankshaft can be continuously operated at a high speed.
In order to coordinate the movement of the crankshaft, the connecting rod and the piston with the operation of the main valve, therefore, in the crankshaft
A connector is used between the main valve and the main valve.
The connector not only makes the crankshaft and the main valve work, but it can still be used for the entire pneumatic machine.
Play a protective role. The material selected for the connector and its fracture area are specified.
If the main valve is killed due to lack of lubricating oil and continues to operate, the connector is cut off.
The motion of all parts of the pneumatic machine is at a standstill, which can reduce the damage of other parts. Wind power
Performance parameters such as speed, torque, power and compressed air consumption of the pneumatic machine are tested by the performance of the pneumatic machine.
It is measured by measurement.

Gearbox

The gear box is integrally molded with the base, and has a carrier and two sets of gear pairs (one set is an external gear)
The secondary and the other group are internal gear pairs), all of which are enclosed in a gearbox with a certain oil level. The
The gear box is located between the pneumatic machine and the drum, which can decelerate the power generated by the pneumatic machine through these two groups.
The gear train, and the clutch fixed to the main shaft, are transmitted to the drum.
Brake

The brakes are composed of steel belts, asbestos belts, support frames, handles and adjustment screws. Steel strip
In a ring shape, the inner wall is riveted with an asbestos tape, which is hung on the circumference of the drum brake drum, and one end is fixed at
The support brackets on the base are connected, and the other end is riveted with a joint with internal threads and a fixed to the support bracket.
The screws are screwed together. When the handle is tightened in a clockwise direction, the steel belt can act as a brake to keep it running.
The roller does not move, otherwise, if the handle rotates counterclockwise, it can be released and the roller can be
Turn to freedom.

Winch manipulation

When connected to the air pipe, simply push the clutch at the front end of the drum and move the plate at the end of the pneumatic machine P.
The longitudinal rod can start the winch, and the position of the joystick can be divided into three parts: “left”, “medium” and “right”.
That is to make the drum of the winch get three parts of "forward rotation", "stop rotation" and "reverse rotation", such as the joystick
When the lever is turned to the left, the running direction of the drum is positive, and when it is pulled to the right, the drum can run in the opposite direction.
When the joystick is in the middle position, the drum can be stopped.
The angle of the lever's turning angle is related to the running speed of the drum. If the turning angle is as large as the position, then the rolling
The tube can be turned at full speed. In the case of training operations, if the joystick can be stretched from the middle position to the left
The square (or square) winch can smoothly run from slow to full speed to suit the job.

This type of winch has a certain self-locking effect

When lifting the work, you can stop at midway as needed during the process of lifting or lifting heavy objects.
(but the time should not be too long), and the weight does not fall, but if it can be used with the brake at the same time,
It is more secure.
Note: When lifting heavy objects, first push the clutch at the front of the drum.
When the joystick is pulled to the middle "parking" position, the brakes (ie the brakes) are used, that is, the brakes are used.
Can achieve the purpose of braking.

When the winch stops running, if the drum needs to be turned, the clutch can be freely rotated as long as the clutch is disengaged.