Selection and disassembly of diaphragm coupling?

Diaphragm coupling is also a common component in couplings, and there are many types of couplings. Then, as a kind of diaphragm coupling in couplings, its selection and disassembly What is it like? The following is the content about it brought by the editor, hoping to make us have a harvest!

Selection and disassembly of diaphragm coupling

1. The diaphragm coupling is composed of at least one diaphragm and two shaft sleeves.The diaphragm is fastened to the sleeve with a pin and generally will not loosen or cause backlash between the diaphragm and the sleeve.Some manufacturers supply two diaphragms, and some supply three diaphragms, with one or two rigid elements in the center, and the two ends are connected to the shaft sleeve.

2. The characteristic of diaphragm coupling is a bit like a bellows coupling. In fact, the torque transmission method of the coupling is similar.The diaphragm itself is very thin, so when the relative displacement load occurs, it is very simple to twist, so it can accept up to 1.5 degrees of error, and a lower bearing load occurs in the servo system.

3. Diaphragm couplings are often used in servo systems. Diaphragms have good torque rigidity, but are slightly inferior to bellows couplings.

4. On the other hand, the diaphragm coupling is very delicate, and it will be easily damaged if it is misused in operation or without the correct device.Therefore, it is very necessary to ensure that the error is within the acceptable scale of the normal operation of the coupling.

When disassembling the diaphragm coupling, generally disassemble the connecting bolt first, and the working environment.Because there is a layer of grease, corroded products and other deposits on the surface of the thread, the bolt is not easy to disassemble, especially for the severely corroded bolt, it is very difficult to disassemble.It is necessary to choose suitable things for the disassembly of the connecting bolts, because the bearing surface of the outer hexagon or inner hexagon of the bolt has been slipped and damaged, making it more difficult to dismantle.Regarding the bolts that have been rusted or with a lot of grease stains, solvents (such as rust loosening agent) are often used to spray the joints of the bolts and nuts to allow the solvent to enter the threads, which will be easily disassembled.If the bolts cannot be removed, the heating method can be used, and the heating temperature is generally controlled below 200°C.By heating, the gap between the nut and the bolt is enlarged, and the rust is also easily dropped, which makes it easier to disassemble the bolt.If none of the above methods work, just damage the bolts, cut or drill the bolts, and replace them with new bolts during installation.The new bolt must be the same as the original bolt standard. It is used for the newly replaced bolts of the high-speed equipment coupling. It is also necessary to weigh the new bolts and the coupling bolts on the same set of flanges. Select the coupling Elements that should be considered.

In the process of coupling disassembly, the most difficult task is to remove the hub from the shaft.Regarding the hub of the coupling, a three-legged puller or a four-legged puller is generally used for disassembly.The selected puller should match the shape of the wheel hub. The right-angle hooks of each foot of the puller should be properly combined with the rear side of the hub, so that no illusion of slippage will occur when force is applied.This method is only used for the disassembly of hubs with relatively small interference. For hubs with relatively large interference, heating is often used, perhaps together with hydraulic jacks for disassembly, drum-shaped gear couplings.

Cleaning, sorting and quality evaluation of all parts of the coupling is an extremely important task after the coupling is disassembled.The evaluation of parts refers to the comparison of the existing conditions of the dimensions, shape, and data nature of each part with the quality standards determined by the parts planning, to determine which parts can be used continuously, and which parts should be used. After the amendment is used, which parts belong to the parts that should be obsolete and updated.

Because the diaphragm coupling needs to be disassembled due to its own faults, the entire coupling must be checked carefully (especially about the damaged coupling), and the cause of the fault should be found out.

Before disassembling the coupling, it is necessary to mark the cooperating positions of the various parts of the coupling for reference when reassembling.For couplings used in high-speed couplings, the coupling bolts are weighed, and the transmission accuracy of the coupling must be clear and the symbols must not be mistaken.

Domestic scrap market continues to fall, the market is running, and the transaction is not high

Today, the domestic scrap market continues to fall and the market is running, and the transaction is not high.Recently, the market for finished products has not been safe, and the quotations of Tangshan steel billet have been lowered one after another. Under such circumstances, the domestic scrap market is still on the downward trend.Recently, steel mills have also lowered most of their scrap purchase price policies. Shagang cut 20 yuan, Gangqiangang cut 20 yuan, and Xigang cut 20 yuan.The amount of scrap steel purchased together is also low, and many steel mills choose to eat more pig iron and less scrap in order to control costs.Most of the merchants are disappointed, and the operation is still fast in and out, and the main thing is not to stock up.It is estimated that the domestic scrap market will continue to drop in the near future.

据信息研究中心商场监测显现：北京区域重废商场报价在2030元，比昨日下调20元;唐山区域重废商场报价在2090元，比昨日下调20元;辽阳区域重废商场报价在2230元;安阳区域重废商场报价在2000元，比昨日下调20元;佛山区域重废商场报价在2480元;江阴区域重废商场报价在2260元;上海区域重废商场报价在2350元，比昨日下调30元;西安区域重废商场报价在2000元;临沂区域重废商场报价在2000元，比昨日下调40元;青岛区域重废商场报价在2040元左右，比昨日下调40元。

The content of the coupling is introduced above. After reading it, we should have a certain understanding of it. Interested friends can also learn more about the other information we have collected.