This standard defines the terminology and key components used in sheep shearing machines. It provides a comprehensive overview of various types of shears, their structural elements, and operational parameters.
1. **Shear Shearer** – A machine specifically designed for the process of shearing wool from sheep.
2. **Flexible Shaft or Joint Shaft Shearer** – A type of shearing machine that uses a flexible or articulated shaft to transmit power from the motor to the cutting head.
3. **Direct-Acting Shearing Machine** – A shearer driven directly by a motor, typically used in stationary or fixed applications.
- **3.1 Intermediate Frequency Motor Shearer** – A direct-acting shearer powered by a micro-frequency motor.
- **3.2 Single-Phase Series Shearer** – A compact shearer using a single-phase series motor for direct operation.
- **3.3 Air Operated Shearer** – A shearing device driven by an air motor, commonly used in environments where electrical power is limited.
- **3.4 Hydraulic Shearer** – A shearing machine powered by a hydraulic motor, offering high torque and smooth operation.
4. **Body** – The main frame of the shearing machine, which supports and houses all internal components.
5. **Shearing Mechanism** – Composed of a movable blade and a fixed blade. The moving blade oscillates over the fixed blade to cut wool effectively.
- **5.1 Moving Blade / Upper Blade** – The active blade that cuts the wool during operation.
- **5.2 Fixed Blade / Lower Blade / Comb Blade** – The stationary blade that supports and assists in cutting the wool.
6. **Pressure Mechanism / Tension Mechanism** – Adjusts and maintains the working pressure of the shearing unit.
- **6.1 Threaded Sleeve / Tension Nut** – Connects the pressurizing mechanism to the body.
- **6.2 Compression Nut / Tension Nut** – Used to fine-tune the pressure applied to the shearing blades.
- **6.3 Sliding Sleeve / Pressure Tube** – Ensures proper alignment and direction of pressure transmission.
- **6.4 Tension Rod / Pressure Transmission Rod** – Transmits force from the tension mechanism to the shearing blades.
7. **Eccentric Mechanism / Crank Unit** – Converts rotational motion into the oscillating movement of the blade.
- **7.1 Pendulum Rod Assembly / Fork Assembly** – Transmits power and pressure to the moving blade.
- **7.1.1 Pendulum Fork** – Swings back and forth to transfer force to the pressing jaws.
- **7.1.2 Left and Right Pressing Claws (RH & LH)** – Claw-like components that apply pressure to the blade.
- **7.2 Support Pins / Twisting Pin / Fulcrum Post** – Supports the swinging pin shaft.
- **7.3 Roller Crank / Roller** – Small spherical bearings that assist in eccentric motion.
- **7.4 Eccentric Shaft / Main Spindle** – A crankshaft with an eccentric design to drive the blade.
- **7.5 Bushing / Sleeve Bush** – Bearings that support rotating parts.
8. **Hinge Mechanism / Articulated Mechanism** – A joint system connecting the body to the flexible or articulated shaft, allowing for flexible movement.
- **8.1 Inner and Outer Joints** – Supports the eccentric shaft and transmission shaft, ensuring smooth rotation.
- **8.2 Joint Gear / Cog** – A special gear that maintains power transmission even when the axis angle changes.
- **8.3 Drive Shaft / Short Shindle** – Transmits power from the motor to the shearing head.
9. **Shear Width** – The lateral distance between the two sides of the fixed blade.
- **9.1 Wide Cut** – A shear width of at least 70mm.
- **9.2 Narrow Cut** – A shear width less than 70mm.
10. **Power Blade Oscillation Frequency** – The number of blade oscillations per second.
11. **Stroke** – The horizontal distance traveled by the blade tip during one full oscillation.
12. **Tooth Pitch** – The distance between adjacent blade tips.
13. **Blades – Actual Working Surface** – Includes all edges of the blade, including the knife edge.
14. **Tooth Side Surface** – The surface of each tooth on the blade.
15. **Blade Edge / Knife Edge** – The actual edge formed by the intersection of the blade and the tooth line.
16. **Blade Concavity / Knife Concavity** – The maximum chord height of the blade’s working surface.
17. **Inter-Blade Pressure** – The positive pressure between the moving and fixed blades.
18. **Static Differential Pressure Between Blades** – The maximum pressure difference between the blades when the moving blade slowly oscillates within its stroke.
This standard ensures clarity and consistency in the design, function, and terminology related to sheep shearing equipment, making it easier for manufacturers, users, and regulators to communicate and operate efficiently.
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