Briefly describe the prerequisites for the installation of the rail clamp plates 1. Prerequisites for product installation The rail clamp plate adopts an adjustable combined rail pressing plate, which can overcome the failures of the traditional rail pressing plate in use. The traditional pressing plate is often directly pressed with the rail steel to the steel rail in use. Some rail clamp plates can no longer be adjusted in the horizontal direction after installation, so after normal loading or thermal expansion and contraction caused by longitudinal movement of the track, it is easy to wear, causing the bolts of the clamp plate to loosen and the pressure plate to rotate, causing the surface of the track to wear and gnaw. If the rail is broken, the rail will be broken in severe cases, which will also affect the wear of the main engine wheels and the damage to the drive mechanism. When using the adjustable combined track platen, the track can be fixed in the horizontal dire...
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How to use track pressure plat es and rail pressing device The track pressure plates are connecting pieces for reliable fixing between the crane rail and the ground (or the bearing beam). It is arranged along the entire length of the track, and one set is set every 500mm. One set is two pairs. In the state, it can follow the vertical and lateral impact force and can withstand the additional lateral force generated by the crane’s skew operation. The track pressure plates adopt adjustable combined rail pressing plates, which can overcome the failures of the traditional rail pressing plate in use. The traditional pressing plate is often directly pressed with the rail steel to the steel rail in use. Some track pressure plates can no longer be adjusted in the horizontal direction after installation, so after normal loading or thermal expansion and contraction caused by longitudinal movement of the track, it is easy to wear, causing the bolts of the pressure plate to loosen ...
The British aircraft carrier is built with Chinese gantry cranes gantry-cranes A Gantry crane is a variant of a bridge crane, also called a gantry crane. Mainly used for outdoor cargo yard, stock yard cargo, bulk cargo loading and unloading operations. Its metal structure is like a door-shaped frame, with two supporting feet installed under the main beam, which can walk directly on the crane rail track on the ground, and the two ends of the main beam can have extended cantilever beams. Gantry cranes have the characteristics of high site utilization, large operating range, wide adaptability and strong versatility, and are widely used in port freight yards. In the past few years, Britain’s latest Queen Elizabeth-class aircraft carrier has been undergoing intense construction work. It is worth noting that the only crane that can hoist large equipment is a gantry crane manufactured by Shanghai Zhenhua Heavy Industries, which is made in China. The old naval countries all u...
China’s port machinery industry development China’s port machinery industry development port machinery China’s extraordinary strength in the port field requires good port machinery behind it. Among them is a Chinese company that broke the monopoly of Germany, Japan and South Korea, and counterattacked over 80% of the global port machineries market. The gantry crane produced by this Chinese company will be used. This is Shanghai Zhenhua Heavy Industries Co., Ltd. (ZPMC). Zhenhua Heavy Industry is indeed a very remarkable company. It was established in 1992, and it took only 6 years to surpass the established port machinery giants of Germany, Japan and South Korea and become the world’s number one. Today, this company has been ranked No. 1 in the global port machineries market for 22 consecutive years. Glory Rail specializes in supplying crane rail system products in the port machine construction projects. We supply ZPMC clips for crane rail track fixing,...
China cancelled the tax rebate for steel products, rails exporting becomes harder China cancelled the tax rebate for steel products, rails exporting becomes harder Recently, China once again adjusted the export tax and fee policy of the steel industry, increased the export tariffs on ferrochrome and high-purity pig iron, and cancelled export tax rebates for 23 steel products. This also means that the export tax rebate for steel products of the 169 tax codes that originally enjoyed export tax rebates will be cancelled and reduced to zero, and the export of domestic steel products will no longer enjoy the export tax rebate dividend. Some experts analyzed that the purpose of this adjustment is to reduce the export volume of primary products and related steel products, and give priority to ensuring the supply in the domestic market. In the long run, the cancellation of export tax rebate dividends for Chinese steel companies is more conducive to the development of the industry. Steel ...
Analysis of Quenching Process of rail joint bar A rail joint bar, ( track joint bar , also known as fish plate), is the recommended product for rail joint connection. Divided into light rail, heavy rail, and crane rail. The rail joint bar is also called the fish plate, which plays a role in fixing the rails on the railway. According to different rail applications, the type of plywood used is also different, so that the role of the plywood can be further brought into play. In fact, in order to enhance the role of the plywood, some quenching processes are often used after the plywood is produced. In order to increase the understanding of the quenching process. Let’s take a look at the plywood quenching process. Track plate manufacturers The heat treatment process is very important in the production of rail joint bar. This research mainly focuses on the self-tempering process of the quenching heat of the fish plates. The following are the results of the study: different cooling rate...
The track pressure plate types from Glory Rail The track pressure plate is a common accessory on the rail, and it is also an indispensable accessory on the rail. Different rails use different track press plates. Before use, you should choose the appropriate track press plates according to different types of railways, so as to give full play to the role of the track press plates and reduce some problems during train operation. Appear. Next, the rail press plate manufacturer will introduce the press plate model for you. Track plate is an accessory used to press and fix steel rails and I-beams or concrete beams or the ground. Generally, it is fastened with hexagonal bolts or embedded bolts. The track pressure plate is also called the driving pressure plate, the crane pressure plate, the steel rail pressure plate, and the lifting rail pressure plate. Classification model: Rail clamps can be divided into GDGL clamps, also called 514 double-hole clamps, I-beam clamps. DGL pressure...
Analyze the importance of track clamps in railway tracks As an important part of the railway track, track clamps occupy a key role in the application. It can be adjusted laterally during and after the installation. The pressure plate has different adjustment ranges according to different types. With a double-sided wedge connection, an active lock function can occur. According to different types, the rail pressure plate can accept different lateral forces. The vulcanized rubber nose on the rail clamp has the functions of compensating the manufacturing tolerances of the rail and steel beam; relieving the fatigue stress of the bolt; avoiding the bolt loosening; shelving the movement of the rail axis; pre-tighten the rubber pad at the bottom of the rail. After vulcanization, the rubber nose can be used in various working conditions and reduce noise and vibration. In addition, the track pressure plate should also be rust-proof during daily repair and maintenance. If the t...
Introduction of rail clamp Rail clamp : also known as welded rail clamp, welded rail fixing device, steel beam rail clamp, welded clamp, no matter what it is called, the only function is to press and fix the rail. Rail presses can be divided into WJK , SWJK, HWJK series TG38, TG43, TG50, TG60, QU70, QU80, QU100, QU120 by the base, upper cover, piercing, and elastic flat washers. Rail clamp material: There are two kinds of rail press materials: 1: Semi-cast steel: the upper cover is ductile iron, and the base is cast steel. 2: All cast steel: the upper cover and base are all cast steel. This time we only introduce the full cast steel rail press: (1) The material of the upper cover, base, and adjustment plate is ZG270-500. It should meet the requirements of 5676-85. Use lost wax fine casting. Class II quantity, dimensional deviation meets JZ67-2 Class II accuracy requirements. (2) Bolts and nuts are Q235BF steel processing parts, mechanical properties, and chemical compositio...
Introduction of forged parts A forging machine is used to apply pressure to the metal blank to produce plastic deformation to obtain a processing method for forgings with certain mechanical properties, certain shapes, and sizes. One of the two major components of forging. Forging can eliminate the looseness of the metal as-cast and welded holes, and the mechanical properties of forgings are generally better than those of castings of the same material. For the important parts of machinery with high load and severe working conditions, forged parts are mostly used except for simpler shapes that can be rolled, profiles, or welded parts. According to the forming method, forged parts can be divided into: ① Open forging (free forging). Use impact or pressure to deform the metal between the upper and lower anvils (anvils) to obtain the required forgings. Forging ratios mainly include manual forging and mechanical forging. ②Closed mode forging. The metal blank is compressed and deformed i...
How to make crane rail selection Crane rails selection Crane rail includes special rails, railway rails, square rails, and P-rails. In general, small and medium-sized Cranes use P-rail, while large cranes use Qu crane special rail or square rail. Crane rail selection depends on the diameter of the wheel. Crane rail selection table is below: Wheel diameter 200 300 400 500 600 700 800 900 Crane rail / / / / / QU70 QU70 QU80 Railway track P15 P18 P24 P38 P38 P43 P43 P50 Square rail 40X40 50X50 60X60 80X80 80X80 90X90 90X90 100X100 P-rail 40 50 60 70 80 90 90 100 The number after Qu represents the rail surface width of the track. The number after P represents the theoretical weight per meter.
What is crane rail system What is the Crane rail system? The crane rail system consists of rail, rail clip , rail joint, rail pad , and other rail accessories. Crane rail is a crane running route laid by steel rail, which can ensure that the crane runs along the specified line and transmit wheel pressure to the foundation. The rail is usually composed of two-wheel rails. The top of the rail is convex, and the ground is a flat plate with a certain width, which increases the contact surface with the foundation. The section of the rail is mostly I-shaped and has good bending strength. When the crane is running, the rail cannot move horizontally and longitudinally, and the rail should be easy to adjust. The fixed parts of rail and rail shall be free of crack, looseness, and corrosion; If there is any crack, it shall be replaced in time, and other defects shall be handled in time. As for the installation of the crane rail system, there are two kinds of rail beams commonly ...
Crane rail material grade Crane rail material grades include low carbon steel, high yield strength steel, carbon steel, boron steel, and low alloy steel. Crane rail is used for carrying heavy objects, which have high bearing capacity. Crane rail is also called crane rail. Its height is low and its head width and waist thickness are large. It is required to check the chemical composition and tensile strength. Used for laying crane and trolley rails. Crane rail materials are manganese steel, carbon steel, high silicon copper, copper rail, silicon rail, and so on. The railway rail is composed of steel, which can be divided into ordinary manganese-containing steel rail, copper-containing ordinary carbon steel rail, high silicon copper-containing steel rail, copper rail, manganese rail, silicon rail, etc. Most crane rails adopt U71Mn, and most light rails are made of Q235 and 55Q; Most heavy rails are made of 45MN and 71mn Among the crane rail material grades, U71Mn is th...
crane rail material There are three kinds of crane running rails : crane rail, railway rail, and square steel. Rails are usually made of steel with high carbon and manganese content (C = 015% ~ 018%, Mn = 016% ~ 115%). The crane rail material is U71Mn, and the chemical composition of track material is (C 0.65-0.67, si0.15-0.35, mn1.1-1.5, P < = 0.04, s < = 0.04). The common models are qu70, QU80, qu100, and qu120. The number behind Qu indicates the width of the track head, the tensile strength is required to be no less than 880mpa, and the standard length is 9, 9.5, 10, 10.5, 11, 11.5, 12, and 12.5. Railway rail is divided into light steel rail and heavy steel rail. Rails weighing more than 30kg/m are heavy steel rails. The main track material of heavy steel rail is 55Mn, 71Mn, with specifications of 50kg/m, 43kg/m, 38kg/m, and 33kg m. The crane rail is used for crane, with crane rail material of U71Mn, and rail specifications of QU70, QU80, QU100, and QU120. Light st...
What is a gantry rail ? The gantry rail refers to the track on which the gantry crane travels. A Gantry crane is a variant of a bridge crane. In the port, it is mainly used for the loading and unloading of outdoor cargo yards, stockyards, and bulk cargoes. Its metal structure is like a door-shaped frame, and two feet are installed under the bearing main beam, which can walk directly on the track on the ground, and the two ends of the main beam can have outrigger cantilevers. Gantry cranes have the characteristics of high site utilization, large operating range, wide adaptability, and strong versatility, and are widely used in port cargo yards. Selecting a suitable gantry rail is very important to the stable operation of the crane. Usually, the crane supplier will give the cross-section requirements of the rail according to the parameters of the crane produced and the type of wheels. The specific installation and required accessories need to be confirmed according to the act...
Crane Rail clips Standard Crane Rail clips Standard Crane is a special equipment with high risk, and its structural design, manufacture, and inspection all have national standard specifications, while the rail fixed pressure plate has no design or standard specifications. In the safety accidents of cranes, many are caused by the failure of the fixing of the crane rail clips. Therefore, the force and stress distribution of the crane rail clips are studied, hoping to provide a reasonable analysis method and design basis for the pressure plate. The force analysis of the track The bridge crane lifts the object with hooks, track pressure plate manufacturers grab or electromagnets, transfers the load to the wheels through the bridge frame, and contacts the track with the wheels, so that the load is supported by the track, track pressure plate, and support. Liang et al. spread to the ground. The force on the track is analyzed in three directions, namely longitudinal, lateral and v...
composite rubber pads Crane rail presses are divided into flexible rail presses and rigid rail presses. The rigid rail presser is in direct contact with the rail, and it is easy to form point contact or line contact. To prevent this phenomenon, press the tongue between the rail presser and the rail, which also increases the coefficient of friction between them. At the same time, laying composite rubber pads under the track can increase the friction coefficient and surface contact between the rail and the support beam, and prevent the track from generating bow waves. It can also prevent noise when the crane is running. In the national standard atlas 04G325, the 6a series and 6b series of the DGL pressure plate are introduced, and the quick laying composite rubber pads are also introduced. Composite rubber pads are divided into continuous laying (through laying) and discontinuous laying (block laying) 1. The function of composite rubber pads: 1.1 Evenly distribute the wheel pressur...
Maintenance of rail clamp plates Maintenance of rail clamp plates In order to prolong the service life of our rail clamp plates, we need to maintain them to make them have a longer service life. In the process of using the welding rail clamp plates, they will inevitably suffer some bumps and wear. By using some skills to maintain the welding rail clamp plates, the service life of the welding pressure plate will be longer. Thereby improving economic efficiency. 1. After removing the welding pressure plate, use a steel brush to brush off the rust, and then use dilute hydrochloric acid (concentration of 15% to 20%) to remove the rust spots, so that the welding pressure plate shows the metallic color. 2. If the welding seam of the plug is cracked due to planning, it needs to be repaired. That is, after the double-sided planing, each welding platen is subjected to a steam pressure test one by one, and if any water droplets are found, make a mark. After turning off the test steam...
Crane rail installation Crane rails include special rails, railway rails, square rails , and P-type rails; square rails have relatively large wear on the wheels and are rarely used; most cranes and trucks use P-type rails. The crane rail installation methods include pressure plate fixation, hook screw fixation, welding and bolt combination fixation, etc. In order to adjust the horizontal direction, the holes on the rail pressure plate are usually made as long holes, and the vertical adjustment can be made by adding pads under the rail. When designing the rail pressure plate, it should have sufficient rigidity. Each pressure plate can be made into a single hole or double hole according to the size of the force. Only when the rail and the rail beam or the steel backing plate fixed on the rail beam are connected by welding, the rail can be welded on the rail. Rail clamps and rail pads are also an important part of the crane rail system, which respectively play the role o...