1.Description

Follow-up control fully hydraulic open die forging hammer is a kind of electric-hydraulic hammer operated by follow-up valve and drove by fully hydraulic driving system. The lower chamber of its cylinder is connected to high pressure oil always, and follow-up valve controls the upper chamber oil in and out to realize striking and return. When upper chamber connecting to high pressure oil, it will drive cylinder to get pressure difference and with ram gravity to realize quick striking; when oil discharging from upper chamber, oil will act on circle area of lower chamber and conquer ram gravity and relevant friction force to realize return.

2.Structure and performance characteristics

The follow-up control fully hydraulic free forging hammer fully draws on the successful experience of hydraulic and pneumatic hammers in China, surpassing in the stability, safety, and convenience of maintenance and repair of product structures, specifically manifested in:
(1) Hydraulic power system structure
●Only the main cylinder and accumulator are installed on the power head, and there is no need for high-pressure welding seams inside the connecting cylinder beam. The structure is simple and reliable.
●The full hydraulic hammer does not require a main cylinder air distribution system and auxiliary air tank, and the structure is greatly simplified; The main cylinder is connected with pre-stressed bolts to improve connection reliability.
●The overall installation of the accumulator is moved downwards, with lumbar support to improve stability.
●The power head is flexibly connected and positioned with the connecting plate, effectively protecting the hammer rod and connecting bolts.
●The hammer rod guide sleeve adopts a high and low pressure dual anti leakage structure, and adopts an imported seal, ensuring reliable sealing.
●Adopting a special high-pressure hose protection structure, effectively preventing high-pressure oil leakage under special circumstances.

(2) Strike system structure
●The guide rails are arranged left and right, reducing the static torque of the hammer body and making the force on the hammer body more reasonable.
●The guide frame and hammer body have a total of 5 faces for positioning, improving the stability of the guide frame.
●Design a device specifically designed to disassemble the connection between the hammer head and the hammer rod.
●The gap of the guide rail is adjustable and can be adjusted without removing the hammer head.
●Design the hammer head with a protruding dovetail to improve the lifespan of the hammer head.

(3) Performance characteristics
●Single lever operation can achieve actions such as slow lifting, slow lowering, striking, return, rapid retraction, hanging the hammer at any position, and continuous striking with different strokes and frequencies. The operation is simple and flexible.
●Hammer movement, hydraulic cylinder without inertia emptying, continuous and non lagging action;
●The fast oil inlet and fast discharge ports are both servo controlled, eliminating occasional misoperation of hydraulic, pneumatic, electric, and hydraulic hammers, making operation safer and more reliable;
●The main valve has a dual characteristic of slide valve operation and cone valve sealing, which increases the controllability and sealing of valve opening and closing, reducing internal leakage in the system.
●The main control valve is a self-developed servo valve with a wide range of applications, which can meet the needs of 1-20 tons of forging hammers and 1-10 tons of free forging hammers.
●The oil consumption of the system can be monitored in real-time; When the system uses a lot of oil, multiple pumps are loaded at the same time. When the system uses less oil, some pumps are loaded, while others are forcibly unloaded. This can significantly reduce the unloading frequency of the pump and unloading valve, reduce hydraulic impact, and improve the service life of the pump and unloading valve.
●The system is equipped with overpressure protection and loss of pressure protection. When the main oil inlet hose breaks or the hammer rod breaks, the system can promptly close the main oil outlet and immediately shut down the motor, improving the safety of the system.

The follow-up control fully hydraulic free forging hammer is controlled by a mechanical control system to achieve continuous impact, return stroke, slow up, slow down, suspension hammer at any position, different stroke and frequency. It can achieve various forging processes like a single rod oil and gas free forging hammer, especially suitable for hydraulic control and power drive of free forging hammers. Of course, it can also be used for hydraulic control and power drive of forging hammers.

1.Principle advantages of fully hydraulic free forging hammer

● Adopting full hydraulic drive, it eliminates the problem of oil and air leakage in the working cylinder;
● During the return journey, there is no back pressure in the upper chamber of the piston, resulting in a faster return speed and higher frequency of strikes;
● The piston is filled with hydraulic oil both above and below, greatly improving the service life of the sealing components;
● The lower chamber of the piston is usually under high pressure, and the hammer head immediately returns after being hammered, without any sticking phenomenon;
● The hydraulic system has stable pressure and is easy to achieve precise control of impact energy.
● It has a simple structure and low failure rate, making it an upgraded product of hydraulic and pneumatic hammers.

2.Main technical parameters

Note: The above information is for reference only and can be adjusted according to the specific requirements of the user.