1. Overview of steel grating nailing fastening equipment

         Nail-shooting fastening equipment is a general term for nail-shooting device, nail-shooting projectile and nail-shooting. The application of nail-shooting fastening technology and the entry of nail-shooting fastening equipment into the market have a history of more than half a century in the world. The production and operation of nail fastening equipment has now formed an independent industry.

         The principle of nailing fastening technology: nailing fastening technology is an advanced fastening technology. It uses the firing needle of the nailer to shoot the nail bullet, so that the energy released by the burning of the gunpowder can directly or indirectly drive the nail into the matrix such as steel, concrete, rock, etc., so as to achieve the purpose of fixing the steel grid member. . This fastening technology is widely used in construction, metallurgy, installation, mining, shipbuilding, communication, transportation and national defense construction at home and abroad.

2. Introduction of steel grating

         Steel grating is a kind of steel product with flat bars arranged in a cross manner according to a certain spacing and cross bars, and welded into a square lattice in the middle. Steel grating has comprehensive advantages such as light weight, factory manufacturing, fast installation, short construction period, good seismic performance, fast investment recovery, and less environmental pollution. Globally, especially in developed countries and regions, steel grating is widely used in construction. It has been reasonably and widely used in the engineering field. Used in alloys, building materials, power stations, boilers. shipbuilding. For petrochemical, chemical and general industrial plants, municipal construction and other industries, it has the advantages of ventilation and light transmission, anti-skid, strong bearing capacity, beautiful and durable, easy to clean and easy to install.

         The development process of steel grating products in my country is a healthy growth process. In this process, the formulation and timely revision of the YB/T4001 standard played a guiding and standardizing role. The application of steel grating has been greatly developed, and it has reached a high level in terms of design, manufacture and installation, and has mastered the design and construction technology of various complex buildings, and has built many scales all over the country. Huge and complex engineering projects.

3. Research on steel grid nailing fastening equipment

         At present, the fastening method of steel grating is mostly connected by welding and installation clips, which not only has low efficiency and high labor intensity, but also requires high technical level of workers and requires external energy, and there are certain safety hazards, because welding sparks cause fires. Accidents occur frequently, and the construction quality is greatly affected by the skills and responsibility of the construction personnel, and the construction quality is extremely unstable.

         In order to adapt to the development of steel grating fastening technology, special nailing fastening equipment for steel grating has been introduced and used in some domestic steel grating projects. The nail-fastening installation technology is an innovative fastening technology that uses the gunpowder nailing method to be applied to the installation of steel gratings. Compared with the traditional steel grid fastening method, the installation technology ensures the best fastening effect of the steel grid and the steel beam, the construction quality is stable, and is basically not affected by the skills and responsibility of the construction personnel, and the entire operation process is very Simple and convenient, the installation efficiency is very high, which greatly reduces the labor intensity of workers, improves the working environment, saves a lot of manpower, speeds up the construction period, and eliminates potential safety hazards, so that the technology has high practical value.

4. Technical characteristics of steel grille nail fasteners

         (1) Innovative design of power source for cold connection of steel grille: use the rapid explosive power characteristics of gunpowder, and use nail-fastening equipment to fasten steel grille efficiently.

        (2) Steel grid nail shooter; to achieve ergonomic design, its appearance should meet the requirements of ergonomics for use, beautiful and practical, so that the construction personnel can operate simply, as long as the trigger is lightly pulled to complete a construction operation. Time work without fatigue.

        (3) Steel grating nails: The applicability design of nails makes it suitable for fastening between various ultra-high-strength steels and steels, steel gratings and steel beams. The strength of the nails is improved through the selection of the nailing material and the appropriate heat treatment technology to improve the tensile and shear strength of the special nails to meet the requirements of the national standard.

5. Installation and use of steel grille nail fasteners

         The installation method of the nail-shooting steel grating is used to fix the steel grating on the carrier, including the nail and the transition piece, and the nail tip end of the nail is fastened in the carrier; the transition piece includes a pressing piece and A connecting screw with internal thread, the head of the shooting nail has external thread matching the internal thread connecting screw; The nail hole, the connecting screw passes through the nail hole and is threadedly connected to the head of the nail. There is a positioning washer on the shooting nail at the position close to the surface of the bearing member, and the thickness of the positioning washer circle matches the diameter of the nail tube. The pressing piece is in the shape of an arcuate plate or a disc, the middle concave part of the disc-shaped pressing piece extends in an arc shape to the periphery, and the surface is symmetrically punched with reinforcing ribs.

The installation method of the steel grating plate using the detachable nail installation structure is as follows:

         1) Put the positioning pad round on the nail, and then install the nail into the nail tube of the nail injector to ensure that the nail injector is equipped with a nail bullet, and adjust the power of the nail injector according to the thickness of the carrier; the existing Many nailers already have a power adjuster, which can adjust the power according to the thickness of the steel plate of the carrier according to the three gears of 1, 2, and 3. Or in the case where the thickness of the steel plate is single, you can also choose a nailer with a fixed power with suitable power for operation.

         2) Align the nailer with the nails at the installation position on the carrier, and press the nailer to depress the nail tube. This process is commonly known as "removing the insurance". Push the launch tube in the nail shooter to move, stick to the nail shooter of the clip, and then pull the trigger to shoot the nail shooter. Drive into the carrier to complete the fastening of one shot nail;

         3) Put elastic washers on the connecting screws, then assemble the connecting screws and pressing parts to the installation position, and tighten the connecting screws to the shooting nails to realize the installation of a set of pressing parts, shooting nails and connecting screws;

         4) Continue to install the designed number of compression plates, nails, and connecting screws on each steel grating to complete the installation of a steel grating.