Coupling

The types of couplings are:

LS1 integrated coupling;

LS2 one-piece elastic coupling;

LS3 cross slide coupling;

LS4 bellows coupling;

LS5 diaphragm coupling;

LS6 bellows expansion sleeve coupling;

LS7 keyway diaphragm coupling;

LS8 single and double diaphragm coupling;

LS9 rigid coupling;

LS10 plum blossom coupling;

LS11 plum blossom expansion sleeve coupling;

LS12 diaphragm expansion sleeve coupling, etc.

Commonly used coupling classification and performance introduction

1. Flange coupling

Flange coupling (also known as flange coupling) uses bolts to connect two halves of the coupling (flange disc type); the two half couplings are connected with two shafts by keys respectively to realize the connection between two shafts and transfer the torque and movement. The flange coupling is simple in structure; easy to manufacture; low in cost; reliable in work; easy to assemble, disassemble and maintain, and the transmitted torque is large, which can ensure high centering accuracy of the two shafts. Flange couplings are generally used for stable loads; high-speed or high transmission precision shafting transmission, it does not have the performance of radial, axial and angular compensation. If the centering accuracy of the connected two shafts cannot be guaranteed during use, it will reduce the service life of the coupling, affect the transmission accuracy and transmission efficiency, and cause vibration and noise.

Flange couplings are divided into: YL type-basic type, YLD type-centered type.

2. Slider coupling

The slider coupling is similar in structure to the cross slider coupling, except that the cross slider in the middle is square. Its function is to use the middle sliding block to slide in the corresponding radial grooves on the end faces of the half couplings on both sides to realize the coupling of the two half couplings. Slider couplings are noisy, have low efficiency, and wear quickly. Generally, they are not used as much as possible, and should only be used in occasions with very low speed. Its model is: WH type.

3 Chain coupling

The chain coupling uses a shared chain to simultaneously mesh with two parallel sprockets with the same number of teeth. The main difference of chain couplings is that the couplings of different structures use different forms of chains; the common ones are double-row roller chain couplings, single-row roller chain couplings, toothed chain couplings and nylon Chain coupling, etc. The performance of the double-row roller chain coupling is better than that of other structural couplings; it has a simple structure and is easy to assemble and disassemble, and it can be completed without moving the connected two shafts during disassembly. It has certain compensation capabilities, compact size, light weight, low requirements for installation accuracy, reliable work, long life, and low cost. The main models are: GL type (without cover), GLF type (with cover).

4 Gear coupling

The gear coupling is composed of an internal gear ring with the same number of teeth and a flange type half coupling with external teeth. The external teeth are divided into two types: straight teeth and drum teeth; the so-called drum teeth means that the external teeth are made into a spherical surface; the center of the spherical surface is on the gear axis; the side clearance of the tooth is larger than that of ordinary gears; Large angular displacement (compared to straight tooth coupling) can improve the contact conditions of the teeth; improve the torque transmission capacity and extend the service life.

When the gear coupling is working, there is a relative angular displacement between the two coaxially. The tooth surfaces of the internal and external teeth periodically slide relative to each other in the axial direction, which will inevitably causes tooth surface wear and power consumption. Therefore, the gear coupling needs to be good, the state of lubrication and sealing. Gear couplings have small radial dimensions and large carrying capacity. They are often used for shaft transmission under low-speed and heavy-duty conditions. High-precision and dynamically balanced gear couplings are used for high-speed transmission. Because the angular compensation of drum-shaped gear couplings is greater than that of straight-tooth couplings, they are widely used.

The forms of drum gear couplings are:

GICL---- wide basic type, the inner gear ring is wider, which can compensate for large axis deviations, and is suitable for connecting horizontal two coaxial line shaft transmissions.

GIICL---- narrow basic type, small tooth spacing, small relative radial displacement, compact structure, and small transmission inertia.

GICLZ ----wide type connected with intermediate shaft

GIICLZ -----narrow type connected with intermediate shaft

GCLD -----connected with the motor shaft type; suitable for occasions matching the motor.

WGP ------with brake disc type; suitable for matching occasions with disc brakes.

WGC -----vertical installation type; suitable for vertical two-axis shafting transmission.

WGZ -----with brake wheel type; suitable for matching occasions with brake shoe type brakes.

WGT -----connecting intermediate sleeve type; suitable for long-distance connection occasions.

TGL-------nylon inner gear ring type; suitable for 2500N load. Small and medium torques below M;A -----connecting two coaxial transmissions.

WGJ ------connect with intermediate shaft type;

NGCL -----with brake wheel type

NGCLZ type-with brake wheel type

WG type-basic type

5 Universal -coupling

Universal -couplings have a variety of structural forms; common ones are cross-shaft universal couplings and ball cage universal couplings. The common feature of universal couplings is that the angular compensation is relatively large; the angle between the two axes of universal couplings of different structures is different; generally between 5 and 45 degrees.

It is mainly divided into: SWC type universal coupling, SWP type universal coupling, SWZ type universal coupling, WSD type universal coupling, WS type universal coupling, WSH type sliding bearing universal to the coupling.

SWC type is divided into:

BH type-standard telescopic welded universal coupling

BF type-standard telescopic flange universal coupling

DH type-short telescopic welded universal coupling

CH type-long telescopic welded universal coupling

WH type—non-telescopic welded universal coupling

WF type-universal coupling without telescopic flange

WD type-non-telescopic short universal coupling

SWP type is divided into:

A-with telescopic long universal coupling

B-with telescopic short universal coupling

C-non-retractable short universal joint

D-Non telescopic long universal joint

E------with telescopic double flange universal coupling

F——Large telescopic long universal coupling

G------with telescopic ultra-short universal coupling

6. Diaphragm coupling

The diaphragm coupling is composed of several groups of diaphragms (stainless steel) interlaced with two halves of the coupling with bolts; each group of diaphragms is made up of several pieces; the diaphragms are divided into connecting rods and different shapes of slices. The diaphragm coupling relies on the elastic deformation of the diaphragm to compensate for the relative displacement of the two shafts; it is a high-performance flexible coupling with metal elastic elements; no lubrication; compact structure; high strength; long service life; No rotation gap; not affected by temperature and oil pollution; with characteristics of acid and alkali resistance; anti-corrosion; suitable for shafting transmission in high temperature, high speed, and corrosive medium working conditions; widely used in shafting transmission of various mechanical devices; Such as water pumps; fans; compressors; hydraulic machinery; petroleum machinery; printing machinery; textile machinery; chemical machinery; mining machinery; metallurgical machinery; aviation (helicopter); naval high-speed power transmission system; steam turbine; piston power mechanical transmission system; crawler Type vehicles; and high-speed generator sets; high-power mechanical transmission systems; applied to high-speed transmission shafts after dynamic balance. Diaphragm couplings are compared with gear couplings; there is no relative sliding; no lubrication is required; sealing; no noise; and basically free of maintenance; more convenient to manufacture; it can partially replace gear couplings.

The main models are: JMI diaphragm coupling-basic diaphragm coupling with counterbore

              JMIJ ---- diaphragm coupling-to intermediate shaft type diaphragm coupling

              JMII -----diaphragm coupling-basic diaphragm coupling without counterbore

              JMIIJ ----diaphragm coupling-connect to intermediate shaft type diaphragm coupling