Definition of tunnel lining

Tunnel lining refers to a permanent structure that supports and maintains the long-term stability and durability of the tunnel. Its functions are: to support and maintain the stability of the tunnel; to maintain the space required for train operation; to prevent the weathering of surrounding rocks; to relieve the influence of groundwater. Therefore, the tunnel lining must have sufficient strength, durability and a certain degree of frost resistance, impermeability and erosion resistance. The tunnel lining is mainly composed of arch ring, side wall, invert and bottom plate. In order to drain the water in the tunnel, a drainage ditch (central drainage ditch or side ditch) is also set in the tunnel.

After the tunnel was excavated, the original balance of the stratum around the tunnel was destroyed, causing deformation or collapse of the tunnel. In order to protect the stability of the surrounding rock and ensure driving safety, the tunnel must have a supporting structure with sufficient strength, that is, the tunnel lining.

The tunnel lining is a permanent support structure built with reinforced concrete and other materials along the periphery of the tunnel body to prevent deformation or collapse of the surrounding rock. Different lining forms can be used in different surrounding rocks. Commonly used lining forms are shotcrete lining, shotcrete lining and composite lining. In most cases, composite lining is used. Composite lining is often divided into primary support (primary lining) and secondary support (secondary lining).

Commonly used tunnel lining materials are: concrete and reinforced concrete, rubble concrete, aggregate stone or concrete precast blocks, and shotcrete. The lining structure of the tunnel is mainly determined according to the geological and topographical conditions of the tunnel, considering the rationality of the structural force, the construction method and the construction technology level and other factors. The structure, shape and size of the tunnel lining differs due to its use, topography, geology, construction and structural performance and other conditions.
For more details of tunnel lining, please click to visit: https://www.gf-bridge-tunnel.com/

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Introduction of Tanker Sales Manufacturers

The tanker sales manufacturer Luoyang CIMC Linyu Automobile Co., Ltd. is located in Luoyang, the ancient capital of the Nine Dynasties, which is known as the “Millennium Peony City”. It is a company with more than 40 years of automobile production history. It is one of the backbone member companies of CIMC Vehicles (Group) Co., Ltd. (referred to as CIMC Vehicles Group).

CIMC Linyu, a tanker sales manufacturer, is mainly engaged in the manufacture and sales of semi-trailers and special vehicles. Since the beginning of 2002, it has been producing and selling semi-trailers. Since 2013, the company has maintained the world’s number one semitrailer sales volume for five consecutive years. The semi-trailer product line mainly includes Jiping semi-trailers, storage semi-trailers, tank semi-trailers, refrigerated semi-trailers, and van semi-trailers; the top product line mainly includes top loading of dump trucks and mixer trucks. In 2017, CIMC Automobile launched the first-generation mid-mounted axle vehicle in the Chinese market.

The company has total assets of more than 700 million yuan and more than 1,500 employees. Leading products include “Lingyu” brand tank special vehicles, sanitation equipment, and refrigerated insulation vehicles. The current annual production capacity is 15,000 units. The products cover 31 provinces, municipalities and autonomous regions across the country, and are exported to all parts of the world. Now it ranks among the forefront of China’s oil tanker industry.

The company has introduced and applied a series of advanced management models such as SAP, JIT, TQM, TPM, and passed IS09001, ISO14001, CCC, ISO/TS16949 and other certifications. In 2010, it was awarded a high-tech enterprise. The current special-purpose vehicle production line is an advanced domestic production line. The combination of full-line streamlined operation with patented non-standard equipment and tooling fixtures can effectively control the production efficiency and process quality of each process. Advanced management has created high-quality products and won praise from the market and users.

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Introduction to the performance of CIMC septic tank truck

A septic tank truck is a vacuum truck that removes spoilage waste from septic tanks, cesspools and chemical toilets (portable toilets) and disposes them at approved wastewater treatment sites.
The CIMC septic tank truck is a dedicated vehicle that combines a powerful vacuum pump with a storage tank for sewage and wastewater.Start the vacuum pump, confirm the suction, and connect the pump to a 4″ or larger vacuum line that the operator uses to empty the septic tank truck.
The CIMC offers a variety of pump sizes and pumping rates, all of them that work on septic pumper trucks will be similar in effect however.This is a very powerful pump, usually weighing 470 pounds, using 6 blades, water cooled, and pumping sewage at 400 cubic feet per minute. It will be apparent that the diaphragm that passes through the unit and into the pump truck will be highly agitated and mixed in the truck. This agitation is correct for any pump used in this application.

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Oil tank truck model introduction

Hit the point! This time the customer chose the exclusive model. Tailored according to customer needs, the oil tank truck is equipped with Jiefang J6P380 horsepower engine, super torque, providing surging power, while lower fuel consumption; using three well-known company hydraulic system, superior performance; in addition, Equipped with 8+5 beams, four-directional images, blind spot radar, active right blind spot detection, automatic seat ventilation and heating, unique eagle-eye bright marking, more comfortable driving and high driving safety factor. For more detailed information about the tanker truck, please consult the tanker truck sales manufacturer for details

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Introduction of Direct Reduced Iron Briquetting Machine

Reduced iron is a low-carbon porous substance in the form of refined iron powder reduced at low temperature in the furnace. It has stable chemical composition and low impurity content. It is mainly used as a raw material for electric furnace steelmaking. It is a high-quality raw material for smelting high-quality steel and special steel. It is used as a coolant for converter steelmaking, but because it is a low-carbon porous substance, the density is too low to be used directly, and it must be used after high-pressure molding. Iron powder reduction briquetting machine is a good choice.

The structural characteristics of the host of the direct reduced iron briquetting machine. The host is composed of upper and lower beams, hydraulic cylinder assembly, feeding cylinder, mold, hopper, liquid filling assembly, etc. The upper and lower beams are connected by uprights and nuts, and the front end of the main hydraulic cylinder is flanged to the bottom of the beam. The mold is fixed on the lower beam, and the mold sleeve is fixed in the mold. The punch is directly connected to the top of the piston rod of the oil cylinder. Both die sleeve and punch can be disassembled and replaced.

The direct reduced iron briquetting machine has a plate-drawing cylinder located behind the lower mold of the main machine. The plate-drawing cylinder forms the bottom of the cavity with the mold sleeve in the front position, and forms a space at the bottom in the rear position, which is conducive to the falling of the cakes and has the function of pushing the cakes out of the bottom of the mold. The feeding cylinder and the feeding hopper form an automatic feeding mechanism. The feeding of the machine is completed by the reciprocating action of the feeding cylinder. The filling system is located on the side of the beam to replenish the oil required for the rapid advance of the main cylinder.

For detailed information about the direct reduced iron briquetting machine, please consult Luoyang Zhongyuan Mining Machinery Co., Ltd.

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Introduction of metal briquetting machine

The main body of the metal briquetting press adopts a multi-cylinder linkage structure, with 1 main cylinder, 2 side cylinders, 1 cover cylinder, 1 turning cylinder, and 5 hydraulic cylinders in total. The main hydraulic cylinder pushes the pressure head to reciprocate back and forth, the side cylinder pushes the pressure head to reciprocate left and right, the cover cylinder drives the cover plate to open and close, and the turning cylinder pushes the turning mechanism for turning motion.

The metal briquetting machine can be used for cans, paint buckets, iron cans, scrap iron, scrap steel, iron sheets, bicycles, color steel tiles, light and thin materials, pig iron, thin iron, exposed cans, red bull cans, scrap aluminum, scrap copper, iron barrels , Car shells, frames, metal trims, aluminum alloys and other scrap metals are pressed into forming at one time.

Metal briquetting machines are mainly used in recycling and processing industries and metal smelting industries. Various metal scraps, steel scraps, scrap steel, iron scraps, scrap copper, scrap aluminum, aluminum scraps, disassembled car shells, waste oil drums and other metal materials can be extruded into cubes, cylinders and other qualified materials in various shapes . It is convenient to store, transport and recycle, increase the speed of entering the furnace, improve labor efficiency, and reduce transportation, manpower and smelting costs.

For more detailed information about the metal briquetting machine, please consult Luoyang Zhongyuan Mining Machinery Co., Ltd.

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Introduction to the working principle of compound crusher

The compound crusher (composite crusher) is widely used in the crushing of various ore, cement, refractory materials, bauxite clinker, emery, glass raw materials, and special hard materials. It is widely used in the crushing scope of mechanism construction of sand and various metallurgical slags, and compared with other types of crushers, it has higher profitability.

Principle of Compound Crusher

The material from the compound crusher is affected by the centrifugal force of the vertical impeller rotating at high speed, the surrounding height and the impact of other streams colliding with each impeller material component at high speed on other materials, then they will form a vortex with the impeller and the shell several times of the material Impact, friction and grinding, from the bottom of the compound crusher, form a direct discharge through the closed-loop control of several projection equipment to achieve the specified finished product size.

For detailed information about the compound crusher, please visit Luoyang Zhongyuan Mining Machinery Co., Ltd. directly.

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Working principle of coal centrifuge

Coal centrifuge is a kind of dehydration equipment that uses the centrifugal force generated by mechanical rotation to realize the separation of solid-liquid mixture. The slime passes through the material inlet and passes through the distribution cone to make the space between the screen basket and the spiral discharge rotor.

Coal centrifuge

 

Under the action of centrifugal force, water and small particles (centrifugal liquid) pass through the material layer, pass through the screen, flow into the water collection tank on the upper part of the machine base along the upper cover, and then are discharged from the machine through the drain pipes arranged on both sides of the machine base. Outside: The coal particles are kept inside the screen basket. Because there is a speed difference between the spiral discharge rotor and the screen basket, the spiral discharge rotor scrapes the coal particles from the screen and pushes them to the bottom of the screen basket, thereby reducing The dehydrated slime (dehydrated product) is discharged into the collecting hopper under the machine, and this dehydration process is continuously carried out.

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Working principle of linear vibrating screen

The linear vibrating screen uses the vibration motor as the source of vibration power, so that the material is thrown up on the screen while moving forward in a straight line. The material enters the inlet of the screening machine evenly from the feeder, and generates data through the multi-layer screen. The oversieve and undersieve of various specifications are discharged from their respective outlets. It has low energy consumption, high output, simple structure, easy maintenance, fully enclosed structure, no dust spillage, automatic discharge, and is more suitable for assembly line operations.

The linear vibrating screen is driven by dual vibration exciters. When the two vibration exciters are synchronized and rotated in opposite directions, the excitation force generated by the eccentric block cancels each other in the direction parallel to the axis of the motor, and in the direction perpendicular to the axis of the motor. Stacking is a resultant force, so the trajectory of the screen machine is a straight line. The two motor shafts have an inclination angle relative to the screen surface. Under the combined force of the exciting force and the material’s self-gravity, the materials are thrown up and jump forward on the screen surface for linear motion, so as to achieve the purpose of screening and grading the materials. It can be used to realize automated operations in the assembly line. It has the characteristics of low energy consumption, high efficiency, simple structure, easy maintenance, and a fully enclosed structure without dust spillage. The maximum sieving mesh is 400 meshes, which can screen out 7 kinds of materials with different particle sizes.

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Introduction to the performance of banana vibrating screen

The banana vibrating screen is a self-synchronizing heavy-duty equal-thickness screen. The screen box is similar to the shape of a banana. The screen beam adopts a box-shaped beam. The vibrator and the exciter are connected by an intermediate transmission shaft.
Banana vibrating screen is widely used in coal grading, desliming, dewatering, de-intermediation, and can also be used for screening in large-volume mining operations in mines. Compared with the traditional sieve of the same specification, the banana vibrating screen developed by our company has a larger processing capacity. Its processing capacity per unit area is 1.5~2 times that of the traditional one. It is a kind of vibrating screen with higher cost performance.

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