月: 2022年12月

What Is an Anti-vibration Glove?

Anti-vibration gloves, designed as protective equipment, are used to reduce hand-arm vibration that can lead to numbness, pain, and weakness in the hands. These gloves are essential in construction sites and workplaces where tools like grinders and brush cutters are used extensively.

These gloves come in various types, including net hand, half-finger, cut-resistant, non-slip, and more. It’s crucial to choose gloves that conform to industrial standards and match the work requirements and hand size.

Uses of Anti-vibration Gloves

Anti-vibration gloves find widespread use in fields like construction, civil engineering, the automotive industry, the steel industry, agriculture, and others where vibrating tools are a regular part of the job.

Common applications include the following:

• Mowing operations such as chain saws and grinders.
• Welding work
• Rock drill work
• Excavation work and concrete demolition
• Agricultural work
• Impact driver work
• Heavy lifting (manual labor)
• Cutting work with an electric sander
• Compressor lifting work
• Concrete drilling work with a hammer drill

Principles of Anti-vibration Gloves

Materials such as natural rubber, artificial leather, microfiber, polyester, cotton, nylon, nitrile rubber, and cowhide are used in these gloves. Cotton, nylon, or chloroprene rubber gloves offer non-slip properties and high breathability. Nitrile rubber is suitable for water and oil environments, and natural leather like cowhide is heat resistant, ideal for spark-prone tasks.

Gloves with rubber tubing made of acrylonitrile butadiene rubber (NBR) are known for their oil, heat, and abrasion resistance, as well as excellent vibration absorption. Sponge gloves absorb vibration effectively but may lose flexibility with increased thickness. Air-cap gloves are lightweight but may have reduced vibration absorption under external force.

Anti-vibration Gloves for Chainsaw Use

Anti-vibration gloves are especially recommended for use with tools like chain saws, as prolonged exposure to vibration can lead to hand-arm vibration disorder. Gloves designed for chainsaw use have high anti-vibration performance, attenuating vibrations at frequencies common to chainsaws. Additionally, some gloves incorporate PBO fiber to enhance safety in chainsaw operations.

Standards for Anti-vibration Gloves

Industrial standards define the performance requirements for anti-vibration gloves, including Japanese Industrial Standards (JIS T 8114) and international standards (ISO 10819). These standards specify construction materials, strength, elasticity, and uniformity in palm and finger coverage. ISO 10819, similar to JIS T8114, differs in aspects like measurement and evaluation methods. High-performance anti-vibration gloves often meet these ISO standards. When selecting gloves, it’s essential to verify their compliance with these standards for optimal anti-vibration performance.

What Are Load Binders?

Load binders, also known as cargo fasteners, are devices utilized to secure or tighten cargo during transport. Their use minimizes the risk of cargo shifting or sustaining damage, thereby enhancing safety and reducing the likelihood of accidents and injuries. While highly effective in safeguarding cargo against vibrations and impact, it’s critical to adhere to their maximum allowable load to prevent damage or accidents.

Uses of Load Binders

Load binders serve a crucial role across various modes of transportation, including trucking, maritime, and rail, ensuring cargo stability and security. They are pivotal in securing diverse loads such as lumber, construction materials, and more, across trucks, ships, and railcars, thus facilitating damage-free transportation.

Principle of Load Binders

Operating on the principle of force transmission, load binders are designed to firmly anchor loads, preventing them from shifting or tipping. Constructed from durable materials like nylon, polyester, and metal alloys, they withstand significant forces, employing pulling mechanisms for effective load fastening.

Types of Load Binders

Load binders come in various types, including lashing straps, turnbuckles, and cargo straps, each tailored for specific applications. These range from flexible straps with latching mechanisms for easy application and release, to adjustable turnbuckles and durable cargo straps with metal buckles for securing a wide range of loads.

What Is a Hydraulic Cutter?

A hydraulic cutter, a device that utilizes hydraulic power, is capable of cutting steel bars, steel, and various other materials. These cutters come in two types: manual and electric, with the main difference being their cutting power.

A major advantage of hydraulic cutters is their spark-free operation, unlike gas fusion cutting or grinder use, making them suitable for sites with fire restrictions. They are also more convenient for high-altitude or unstable footing situations compared to gas fusion cutting.

Uses of Hydraulic Cutters

Manual hydraulic cutters, mainly used for cutting electric wires, can easily slice through thick cables and materials challenging for ordinary cutters. Their ability to cut with minimal force enhances safety and work efficiency, especially in elevated positions.

Electric hydraulic cutters, powered by an electric hydraulic pump, exert more force than manual versions, allowing them to cut through thicker cables and steel bars.

Principle of Hydraulic Cutters

Hydraulic cutters operate by applying hydraulic pressure to a cylinder within the main body. This pressure is generated manually or by an electric pump, moving a piston to exert a strong force on two arms. While possessing a robust cutting force, these cutters, typically made of carbon steel, are not suitable for harder steel materials.

The effectiveness of hydraulic cutters lies in Pascal’s principle, where pressure applied to an enclosed oil container exerts equal force on all surfaces. This mechanism allows manual hydraulic cutters to cut thick cables with a force significantly greater than the operator’s input.

While manual hydraulic cutters rely on manual force application, electric hydraulic cutters utilize an electric pump to generate hydraulic pressure, providing a much greater cutting force capable of handling thicker cables and steel materials.

What Is a Puller?

A puller, a tool designed to remove bearings, gears, and other press-fitted parts from machines and automobiles, is essential for the precise application of force. The term “puller” aptly describes its function of pulling out components.

Various types of pullers exist, each optimized for different parts and disassembly locations, as well as general-purpose pullers adaptable to multiple settings.

Uses of Pullers

Pullers are primarily employed in the maintenance and disassembly of machines and automobiles. Gear pullers, for example, are used in transmission disassembly to extract gears from shafts.

Bearing pullers are specifically designed to remove bearings. Pullers with unique jaw shapes are used for pilot bearings and hub bearings, which are challenging to remove with standard pullers.

Specialized pullers are also available for components like motorcycle flywheels.

Principle of Pullers

A standard puller consists of jaws for gripping the part and a bolt for applying pulling force. The jaws latch onto the part, and when the bolt, fixed to the base material, is tightened, it applies a pulling load, extracting the part. This force is primarily generated from the axial force of tightening the bolt, though some pullers utilize hydraulic force.

The correct jaw type is selected based on the part’s shape and size. If the gap between the jaws is narrow, thinner jaws are used. However, to compensate for reduced strength, the number of jaws may be increased or designed to grip the entire circumference of the part.

When removing a bearing, the axial force during pulling can cause indentations in the raceway of the rolling elements, rendering the bearing non-reusable.

What Is Butyl Rubber Tape?

Butyl rubber tape, made from butyl rubber, has exceptional waterproofing and weather resistance, making it ideal for sealing roofs, windows, and other areas vulnerable to moisture intrusion. It adheres strongly to various surfaces, providing a reliable seal against rainwater and moisture, while its ease of use — requiring no special tools or expertise — enhances its practicality for both professional and DIY applications.

Uses of Butyl Rubber Tapes

Utilized across construction, automotive, and maritime sectors, butyl rubber tape is invaluable for ensuring watertight seals in roofs, window frames, external automobile parts, and ship hatches. Its application extends to vibration absorption in vehicles, reducing noise and preventing interior moisture damage.

Principle of Butyl Rubber Tapes

Butyl rubber tape’s efficacy is rooted in flexibility, elasticity, and strong surface adhesion. These properties enable the tape to conform to irregularities, ensuring tight seals that block moisture and air ingress, thereby maintaining their protective capabilities under various environmental conditions.

How to Select Butyl Rubber Tapes

Selection criteria include considering the tape’s width and length based on the application’s specific requirements to ensure adequate coverage and minimize waste. The choice depends on the size of the area to be sealed and the volume of tape necessary for the project.

Other Information on Butyl Rubber Tapes

Effective application involves stretching the tape around the object, ensuring overlap for comprehensive coverage. The distinction between butyl tape and general waterproof tape lies in butyl tape’s specialized composition.

What Is a Pilot Light?

Pilot lights, also known as indicator lamps or confirmation indicator lamps, serve as visual indicators of the operating status of electrical equipment. Initially utilizing neon tubes, modern devices predominantly employ LEDs due to their energy efficiency, long life, and low power consumption. These lights are integral for safety, signaling the presence of electrical power and reminding users to conserve energy.

Uses of Pilot Lights

Pilot lights play a critical role across various settings, signaling operational statuses and ensuring safety in residential, commercial, and industrial environments. They facilitate management of electrical systems in dimly lit or dark conditions and serve as warnings against potential electric shock hazards. Moreover, pilot lights contribute to energy conservation by indicating active power consumption.

Principle of Pilot Lights

Functioning across different light-emitting technologies, pilot lights adapt to various applications through neon tubes, incandescent bulbs, and LEDs. Each type offers distinct advantages, from the durability and simple circuitry of neon tubes to the energy efficiency and longevity of LEDs. The choice of light source depends on factors such as operating voltage, power consumption, and application-specific requirements.

Types of Pilot Lights

• Always On: Indicates the switch’s location regardless of its operational state.
• Simultaneous Flashing: Lights up in tandem with the equipment’s operation, aiding in ON/OFF status verification.
• Alternating Flashing: Helps locate the switch in dark surroundings by lighting up when the switch is OFF.

Structure of Pilot Lights

Pilot lights are designed to indicate various operational states through different lighting methods, such as constant illumination or flashing, to enhance user interface and safety. They are commonly integrated with or adjacent to equipment power switches, with some models designed to illuminate in sync with equipment activation, thereby functioning as pilot switches.

What Is a PVC Glove?

PVC gloves, made from polyvinyl chloride, are recognized for their chemical resistance, making them suitable for handling various chemicals and solvents. Commonly used as disposable gloves due to their cost-effectiveness, these gloves facilitate precise work without restricting hand movement. It’s crucial to ensure proper fit to avoid damage, and disposal should comply with local regulations.

Uses of PVC Gloves

Applications include:

• Medical Care: Essential in preventing infections and ensuring safety during patient care and surgical procedures.
• Food Industry: Vital for maintaining food hygiene during preparation and serving, reducing the risk of contamination.
• Cleaning: Protects hands during cleaning tasks, improving efficiency and safeguarding against contaminants.
• Manufacturing: Offers protection during machine operation and handling of materials, ensuring worker safety.
• General Household: Useful for various household tasks, keeping hands clean and protected.

Principle of PVC Gloves

PVC gloves utilize polyvinyl chloride’s durability and chemical resistance, with the flexibility adjusted through plasticizers. While offering economic efficiency, especially in medical and food sectors, their solvent and heat resistance limitations necessitate careful selection based on the intended use.

How to Select PVC Gloves

Considerations include:

• Size: Proper fit is crucial to prevent slippage or damage. Sizes typically range from S to L, with variations among brands.
• Thickness: Available in various thicknesses, with the choice dependent on work requirements. Thicker gloves offer more durability, while thinner options provide greater flexibility.
• Disposable vs. Reusable: Disposable gloves offer convenience and hygiene, whereas reusable gloves, requiring maintenance, can be more economical over time.
• Powder-Free: Powder-free options are available for those with allergies or sensitivity to glove powder.

What Is a Rope Hoist?

A rope hoist is a lifting mechanism designed to raise heavy objects with minimal force. While rope hoists are used to lift heavy objects, ropes may not be sufficiently strong for lifting very heavy objects in factory settings. In such cases, chains are often used instead.

As a simple hoisting device, a rope hoist may be suspended from a ceiling or a tripod when installed, making it highly convenient for outdoor use.

Uses of Rope Hoists

Rope hoists are used to effortlessly lift and move objects. They are typically installed on factory ceilings, along with a rail for moving the hoist, though most are chain types. Rope hoists are simple and portable, often stored in warehouses and used as required. They are particularly useful for outdoor tasks where cranes are unnecessary.

They can also be employed to move vehicles stuck in ditches during outdoor work, with one end of the hoist attached to the vehicle and the other to a stable object like a tree.

Principle of Rope Hoists

Rope hoists operate on the principle of a pulley. Using one pulley requires the same force as lifting directly. However, two pulleys halve the required force while doubling the rope length pulled. Three pulleys reduce the lifting force to one-third but triple the length of rope needed. This design enables rope hoists to lift heavy objects that would be challenging for a single person.

Rope hoists are compact enough to be hung from ceilings in frequently used areas, but outdoor or construction site use may require a special tripod for hanging, necessitating preparation.

The number of pulleys varies, with some hoists featuring four or eight pulleys.

What Is a Nibbler?

A nibbler is an electric tool designed for cutting steel plates and plastics. Utilizing a round or square die, a nibbler can cut plate materials at high speed while continuously punching them out.

The tool offers a high degree of flexibility in processing and can cut not only in straight lines but also in circular shapes and create notches.

However, it is limited to cutting thin plates; thick plates and bars cannot be processed with a nibbler.

Uses of Nibblers

The thickness of material a nibbler can cut varies depending on its type, but generally, nibblers are used for high-speed cutting of steel, aluminum, and copper plates.

Since they can also cut corrugated plates, nibblers are utilized for cutting tin roofs as well.

There are several types of nibblers, including those powered by an AC100V power source, cordless versions with rechargeable batteries, those powered by air pressure, and hand nibblers that do not require a power source.

Principle of Nibblers

The cutting method of nibblers is similar to that of a punch used in office supplies. By making a hole in a steel plate and shifting it gradually, the hole enlarges, eventually allowing the steel plate to be cut.

This mechanism produces no sparks and is relatively quiet.

Another tool for cutting steel plates is the “shear,” which clamps a steel plate between two blades and cuts it like metal scissors. Shears cut more quickly and produce fewer chips. The cross-section is smoother than with nibblers. However, steel plates may warp and burr after cutting. Shears struggle with corrugated plates and are limited to flat steel plates, while nibblers are more versatile, especially for curved lines.

What Is an Angle Cutter?

An angle cutter is a specialized tool designed for cutting materials. By placing the material between the tool’s groove and blade and operating the handle, users can swiftly and efficiently cut material to desired lengths and angles. This tool is indispensable in construction, manufacturing, and metalworking for its speed, precision, and the inclusion of safety features to prevent accidents.

Uses of Angle Cutters

Angle cutters serve multiple purposes across various industries:

• Manufacturing: Essential for cutting metal parts to exact sizes and shapes, particularly in steel fabrication.
• Construction: Used for cutting construction materials, including rebar and supports, aiding in precise assembly and installation.
• Metal Processing: Facilitates the production of metal angles, accommodating various materials and shapes.

Principle of Angle Cutters

Angle cutters operate on a simple principle, utilizing a blade, handle, and base for cutting. The tool is designed to accommodate the cutting of right-angled, L-shaped materials, with blades specialized for different materials and angles. The efficiency of cutting is enhanced by the design of the handle and base, allowing for easy operation and precise cuts.

How to Select Angle Cutters

When choosing an angle cutter, consider the following:

• Angle Type: Select based on what you plan to cut, considering the material and shape of the angle.
• Driving Source: Options include electric, gasoline-powered, or manual, each suitable for different working conditions and scale of operations.
• Cutting Capacity: Ensure the cutter can handle the thickness and size of the materials you intend to cut, with power options generally offering greater capacity.