The so-called clutch is to use “off” and “on” to transmit the right amount of power. The clutch consists of a friction plate, a spring plate (the tractor uses a disc spring, and the harvester uses a diaphragm spring), a pressure plate and a power take-off shaft. It is arranged between the engine and the gearbox to transmit the torque stored on the engine flywheel. To the gearbox to ensure that the agricultural machinery transmits the appropriate amount of driving force and torque to the driving wheel under different working conditions.

Clutch is a frequently rubbed part on agricultural machinery (friction plate is a wearing part), it will wear with the increase of use time and frequency, which will cause clutch slip phenomenon.

The clutch is the device that connects the agricultural engine and the transmission, and the clutch pedal is the operating device of the clutch. When the clutch pedal is stepped on or lifted, the engine and the transmission will be temporarily separated or smoothly combined to cut off or transmit power, and realize changes in the movement state of agricultural machinery such as starting, shifting, and parking. Slowly lift the clutch until it is fully lifted. If the engine stalls when the clutch is lifted, it means that the clutch is not slipping. If the engine does not stall when the clutch is lifted, it may be a problem with the clutch.

Features of clutch for agricultural machinery

Tractor clutch: The tractor clutch generally uses a double-acting clutch, that is, one way is responsible for walking, and the other way is responsible for power output. Due to structural reasons, the gap between the flange of the clutch pressure plate and the casing is relatively small, especially when the air humidity is high, and the tractor is not used every day (sometimes out of use for several months), so it is bound to be prone to rust. , The adhesion between the pressure plate bracket and the flange is caused by rust, which leads to the incomplete separation of the clutch.

Suggestion: Before using the tractor that has been parked for a long time, the tractor operator should first open the clutch observation port, use a flat-blade screwdriver to turn the clutch assembly, and spray a little rust remover on the three flanges of the clutch pressure plate, and then step on the A few clutch pedals to move it back and forth, and then use the tractor normally for various tasks.

How to operate the clutch

First, press the pedal firmly with the forefoot of your left foot, and step down or lift the clutch pedal with the flexion and extension of the knee and hip joints. Do not use the toes, soles or heels to step on the clutch pedal to prevent insufficient pedal strength or slip off. pedal. The action of stepping on the clutch pedal should be fast and all the way to the end, so that the clutch can be completely disengaged when the clutch pedal is lifted.

It should be determined according to the manipulation situation. Generally, when the working gear is changed to neutral, the clutch pedal can be lifted quickly. When the agricultural machine starts or shifts, the free stroke before the disengagement is not yet engaged can be slightly faster. When the clutch starts to engage When the clutch is fully engaged, the foot should be quickly removed from the pedal and placed under the pedal. When the clutch is not used in the work of agricultural machinery , Do not put your foot on the clutch pedal, so as not to cause the clutch to have a semi-linked phenomenon, affect the transmission torque, and increase the wear of the parts.

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For more details click to visit:https://www.syclutch.com/news/correct-use-of-agricultural-clutches.html

Linear vibrating screen is one of the main equipment for crushing and screening, and it is also the key equipment to provide qualified materials for subsequent operations. Its screening efficiency directly affects subsequent operations. In the actual dressing plant, the main factors affecting the screening efficiency of the linear vibrating screen include: material properties, screen surface structural parameters, vibration characteristic parameters and so on. Next, the vibrating screen manufacturer will specifically analyze how the above aspects affect the screening effect of the linear vibrating screen.

Material properties

The nature of the selected material is one of the main factors affecting the screening efficiency of the linear vibrating screen, and its material properties are mainly reflected in the loose density of the material, the particle size of the material, and the shape of the material.

1. Loose density of selected materials

Generally, the loose density of the material is large and the bulk particles are easy to pass through the screen, and the screening efficiency is high. The effective screening area of ​​the sieve is reduced, which in turn affects the screening efficiency. In order to ensure the screening efficiency, it is necessary to control the bulk density of the selected materials.

2. Selected material particle size

The particle size of the selected material is also an important factor affecting the screening efficiency of the linear vibrating screen. The particle size of the material entering the sieve should meet the size of the sieve hole. Small particles are easy to sieve, and large particles are not easy to sieve. To ensure the screening efficiency, it should be strictly controlled. Into the sieve material particle size.

3. The shape of the material entering the sieve

The shape of the material entering the sieve will affect the sieving performance. Generally, the particles are fully ground and are easier to sieve than the mineral particles of the specification. The sieving rate of materials with irregular particle shapes such as long strips and flakes is poor. Therefore, it is necessary to ensure that the particle shape of the crushed material conforms to the sieve hole standard.

Screen structure parameters

The structural parameters of the linear vibrating screen are mainly reflected in the length and width of the screen surface and the size and shape of the screen hole.

1. Length and width of screen surface

The length of the screen surface of the linear vibrating screen mainly affects the screening efficiency, and the width of the screen surface mainly affects the productivity. The sieve surface of the linear screen is longer, the residence time of the material on the sieve surface is longer, and there are more opportunities to pass through the screen, which will improve the screening efficiency. In fact, the width of the screen surface has different effects on the screening efficiency and the length of the screen surface on the screening capacity.

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For more details click to visit:https://www.hsd-industry.com/news/improve-the-screening-efficiency-of-linear-vibrating-screen/

Cold forging is a process in which metals are formed by forging at room temperature. Cold forging includes deformation forms such as upsetting, die forging and extrusion, and is a cold bulk forming. The cold forging process was developed from cold extrusion and gradually extended to cold die forging and cold precision forging.

Compared with hot die forging, the main advantage of cold forging is that the blank is not heated, so there are no forging dimensions and inherent quality problems caused by heating, and heating equipment is omitted. Cold forgings have high dimensional accuracy, small roughness values, reduce cutting, save materials and reduce costs, and are easy to realize mechanized and automated production. Therefore, it is widely promoted and applied in industries such as automobiles, motorcycles, bicycles, tractors, home appliances, textile machinery, military industry and aviation industry, and is expanding day by day.

TYPES OF COLD FORGINGS

1. Extrusion: cold extrusion, which can be divided into positive extrusion, reverse extrusion and compound extrusion.

2. Upsetting category: cold upsetting can be divided into upsetting and partial upsetting
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3. Die forging: It is finally formed by cold forging, which can be divided into small burr die forging and closed burr-free die forging.

4. Precision forging: cold precision bevel gear tooth profile, spline and straight tooth profile.

COLD FORGING PROCESS CHARACTERISTICS

Cold forging products are of good quality, processed at room temperature, with high dimensional accuracy, smooth surface and good mechanical properties. It can also process forgings with complex shapes, reduce cutting, save material consumption and reduce costs.

The deformation resistance is large, and measures to reduce the deformation resistance must be taken: adjusting the chemical composition of raw materials, pre-treatment of the blank, improving the deformation process, improving the hardness and finish of the mold, and controlling the pressurization speed of the equipment.

Cold deformation strengthening and thermal effect, in the process of cold forging, as the degree of deformation increases, the cold deformation strengthening phenomenon in which the strength and hardness of the metal also increase. Cold deformation strengthening can be used to strengthen the strength and hardness of the product and improve the mechanical properties.

Details can be accessed by clicking here:https://www.gold-emperor.com/cold-forging-technology/

The excavator is one of the commonly used mechanical equipment in engineering construction. The slewing device is an important part of the excavator. It consists of a slewing platform, a slewing mechanism, a slewing bearing and other components. Whether the excavator can rotate left and right during work is inseparable. The credit of the slewing mechanism.

After the excavator has been working for a period of time, under the influence of the working load and the surrounding environment, there will be a phenomenon of inability to rotate. There are also several manifestations of inability to rotate, such as the sudden stop and sudden movement of the rotating platform of the excavator, and the low rotation speed of the platform. At 6r/min, slow power is insufficient, etc. What are the reasons for the inability of the excavator to rotate?

1. The energy input to the hydraulic motor is reduced

When the rotation is weak, the hydraulic motor needs to be checked. The hydraulic motor converts the hydraulic pressure energy into mechanical energy output, so that the platform can be rotated. When the energy input to the hydraulic motor is reduced, it is difficult to overcome the rotational resistance of the platform, which will cause the situation to be weak or even stopped.

2. Failure of safety valve and oil filling valve

When there are problems such as the safety valve and the oil filling valve sealing, it will affect the speed of the excavator slewing platform. If these valves are worn, the valve core and valve seat will be squeezed by pressure, the sealing performance will be reduced, and the working pressure oil will leak from the oil charge valve, causing the excavator to fail to rotate.

3. The damping hole of the pressure limiting valve is blocked

Another point is that the pressure limiting valve orifice is blocked. Because the pressure limiting valve is often opened, the valve seat and valve sleeve are easily worn, and external impurities will enter the oil pump, causing the orifice of the pressure limiting valve to be blocked. When repairing the limit valve, carefully check the degree of wear, and it needs to be replaced if it cannot be repaired.

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Details can be accessed by clicking here:https://www.excavatorbearing.com/a/bearing-knowledge/the-excavator-is-unable-to-rotate.html

The plant grow rack is a rack-like tool specially formed for plant cultivation. It is mainly used to cultivate tissue culture plants. So what does this product mean for plants?

1. Plant culture is an important means to study the laws of plant growth and differentiation

Tissue culture is a technique for culturing explants to regenerate organs or plants under artificially controlled conditions. It can study the law of growth and differentiation of the cultured parts without the interference of other parts of the plant body, and can use various culture conditions to affect their growth and differentiation. developmental process.

2. Plant culture is the basic technology for carrying out bioengineering

Various gene transfer and gene recombination techniques are established on the basis of tissue culture.

3. Plant culture can rapidly propagate plant seedlings

At present, tissue culture has been widely used in the rapid propagation of clones, the cultivation of virus-free seedlings, the selection of new varieties, the preservation of artificial seeds and germplasm, and the industrial production of medicinal plants and secondary substances.

4. Plants grow well

Since the plant growth rack can provide suitable light according to the needs of the plants, the plants cultivated in the light culture rack have a short induction rate, a fast growth rate and good growth.

5. Automatic control of lighting time

Due to the different growth cycles of different plants, a timer can be selected as needed to automatically control the lighting time, which greatly saves manpower.

6. Three-level gradient lighting

Three primary colors of natural light, full spectrum, simulate external natural light, provide the full spectrum required for plant grow, and can choose different light intensities according to different cultivated plants.

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Details can be accessed by clicking here:https://www.etegreen.com/blog/the-mean-of-plant-grow-racks-to-plants/