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Grid coupling

Grid coupling

Grid coupling is a rigid coupling with micro-elasticity, advanced structure, large torque transmission, environmental resistance, and easy disassembly and assembly. Snake-shaped spring coupling, as the name suggests, the transmission element is a spring like a snake-shaped spring, which transmits torsion by the spring. It has superior performance and wide application. This grid coupling is not suitable for frequent start and stop conditions. T series grid couplings are based on American standards, with superior performance, semi-circular arc tooth profile, good shock absorption, and long service life. JS series serpentine spring couplings are domestic standards, and their dimensions and parameters are similar to T series , The difference is that the JS series tooth profile is a straight tooth profile, with poor shock absorption effect and short life.

It relies on serpentine springs to transmit torque. The serpentine spring coupling is the most advanced shaft coupling transmission component in the international mechanical field today, and it is also a very versatile shaft coupling transmission component.
There are nine types of serpentine spring couplings, namely JS cover radial mounting type (basic type), JSB cover axial mounting type, JSS double flange connection type, JSD single flange connection type, SJS connection middle Shaft type, JSG high speed type, JSZ wheel type with brake, JSP type with brake disc, JSA safety type, etc.

Grid coupling

Snake spring coupling has compact structure and small size, suitable for medium and high power transmission shaft system connecting two coaxial lines. It has shock absorption and cushioning performance to compensate the relative deviation of the two axes. The working temperature is -30℃-+150℃, and the nominal torque transmitted is 52-931000N.m. Generally, the allowable displacement of the two shafts is 4-20mm in axial direction; 0.5-3mm in radial direction; angular displacement is 1° 15'. Snake spring couplings are widely used in various industrial fields.

Coupling spring is also known as serpentine spring. The torsion range of the snake spring coupling is 26-270000N.M.
Snake spring coupling features:
The serpentine spring is used as the elastic element, which not only has strong elasticity, but also greatly improves the transmission torque of the serpentine spring coupling. It is widely used in heavy machinery and general machinery.
·This kind of serpentine spring with a special process has a long service life
·Snake spring coupling allows high speed and has good compensation ability in axial, radial and angular directions
·Snake spring coupling withstands large torque, suitable for heavy machinery and general machinery occasions
·A variety of shaft hole forms: keyway, spline, taper hole, expansion sleeve

Grid coupling

Snake spring coupling has compact structure and small size, suitable for medium and high power transmission shaft system connecting two coaxial lines. It has shock absorption and cushioning performance to compensate the relative deviation of the two axes. The working temperature is -30℃-+150℃, and the nominal torque transmitted is 52-931000N.m. Generally, the allowable displacement of the two shafts is 4-20mm in axial direction; 0.5-3mm in radial direction; angular displacement is 1° 15'. Snake spring couplings are widely used in various industrial fields.

JS type Grid coupling Features and applications: It is a structural metal elastic coupling. It relies on serpentine springs to transmit torque. Its transmission characteristics and advantages are as follows:
1. Good vibration damping and long service life. The grid coupling is axially embedded in the two halves with serpentine springs for more than 36%. The serpentine spring leaf of the trapezoidal section is made of spring steel, which has undergone strict heat treatment and processing. It has good mechanical properties, so that the service life of the coupling is much longer than that of the non-metal elastic element coupling (such as elastic sleeve pin , Nylon rod pin coupling) greatly increased.
2. The range of bearing variable load is large, and the start is safe. The tooth surface of the two half couplings and the reed is curved. When the transmission torque increases, the spring will deform along the curved surface of the tooth to make the two half couplings The point of force acting on the reed is close. The contact point between the reed and the tooth surface, that is, the change of torque, changes with the magnitude of the transmitted torque, and its transmission characteristics are variable stiffness. Therefore, it has a greater load variation than general elastic couplings. It can be seen from the figure below that the cushioning effect produced by the transmission force when the reed deforms along the tooth arc can protect the safety of the supporting parts to a certain extent when the machine is started or under strong impact load.
3. High transmission efficiency and reliable operation. The transmission efficiency of the coupling is determined to reach 99.47%, and its short-term overload capacity is twice the rated torque, and the operation is safe and reliable.
4. Low noise and good lubrication. The aluminum alloy casing protects the spring from being thrown out during operation, and the casing is filled with butter, which not only makes the lubrication good, but also makes the noise of the reed meshing absorbed by the butter damping and eliminated.
5. Simple structure, convenient assembly and disassembly. The whole machine has few parts, small size and light weight. The spring leaf designed as a trapezoidal section and the trapezoidal tooth groove are easily and tightly matched, so that the assembly, disassembly and maintenance are simpler than ordinary couplings.
6. Larger installation deviation is allowed. Because the spring leaf and the tooth arc are in point contact, the coupling can obtain greater flexibility. It can be installed to work normally under conditions of radial, angular and axial deviations at the same time.

Grid coupling

JS grid coupling
JS type serpentine spring coupling is a kind of metal elastic coupling with advanced structure. It uses the serpentine reed to be axially embedded in the tooth grooves of the two halves of the coupling to realize the connection between the prime mover and the working machine. Due to the special performance of the reed of the serpentine coupling, it is largely avoided The resonance phenomenon of the working machine, the service life is much longer than the non-metal elastic element coupling; the tooth surface contacted by the reed is arc-shaped, and the size of the contact surface changes with the size of the transmitted torque, so it can bear greater load The amount of variation is determined to be 2 to 3 times the rated torque for short-term overload capacity, with a transmission efficiency of 99.5%, safe and reliable operation; and the serpentine spring coupling has a simple structure, easy assembly and disassembly, and allows larger installations Deviation, suitable for impact coal crusher, rock crusher, crank reciprocating motion, mining, heavy machinery, reducer, etc.

JSJ connecting intermediate shaft snake spring coupling
Product features of JSJ type connecting intermediate shaft coupling:
1. Good vibration damping and long service life
2. Large range of bearing variable load, safe starting
3. High transmission efficiency and reliable operation
4. Low noise and good lubrication
5. Simple structure, convenient assembly and disassembly
6. Large installation deviation is allowed.

Grid coupling

Brief description:
The grid coupling is also called the coupling. A mechanical component used to firmly connect the driving shaft and the driven shaft in different mechanisms to rotate together and transmit motion and torque. Sometimes it is also used to connect shafts and other parts (such as gears, pulleys, etc.). It is often composed of two halves, which are connected by a key or tight fit, respectively, and fastened to the ends of the two shafts, and then the two halves are connected in some way. The coupling can also compensate the deviation between the two shafts due to inaccurate manufacturing and installation, deformation or thermal expansion during work, etc. (including axial deviation, radial deviation, angular deviation or comprehensive deviation) ; And alleviate the impact and absorb vibration.
Most of the commonly used couplings have been standardized or standardized. Under normal circumstances, it is only necessary to correctly select the type of coupling and determine the type and size of the coupling. When necessary, the load capacity of the vulnerable links can be checked and calculated; when the rotating speed is high, the centrifugal force of the outer edge and the deformation of the elastic element need to be checked, and the balance check and so on.

Grid coupling

select:
Selection of coupling type When selecting a coupling type, the following items should be considered.
①The size and nature of the torque to be transmitted, the requirements for buffering and damping functions, and whether resonance may occur.
②The relative displacement of the axis of the two shafts is caused by manufacturing and assembly errors, shaft load and thermal expansion deformation, and relative movement between components.
③Allowable dimensions and installation methods are the operating space necessary for ease of assembly, adjustment and maintenance. For large couplings, it should be possible to disassemble and assemble without axial movement of the shaft.
In addition, the working environment, service life, lubrication, sealing and economy should also be considered, and then refer to the characteristics of various couplings to select a suitable coupling type.

Grid coupling

Types of:
Couplings can be divided into two categories: rigid couplings and flexible couplings.
Rigid couplings do not have the ability to cushion and compensate for the relative displacement of the two axes, requiring strict alignment of the two axes, but this type of coupling has simple structure, low manufacturing cost, and assembly and disassembly. , Convenient maintenance, can ensure high neutrality of the two shafts, large transmission torque, and wide application. Commonly used are flange couplings, sleeve couplings and clamp couplings.
Flexible couplings can be divided into flexible couplings without elastic elements and flexible couplings with elastic elements. The former type only has the ability to compensate for the relative displacement of the two axes, but it cannot buffer and reduce vibration. The common ones are slippery. Block couplings, gear couplings, universal couplings and chain couplings, etc.; the latter type contains elastic elements, in addition to the ability to compensate for the relative displacement of the two axes, it also has buffering and damping functions. However, the transmitted torque is limited by the strength of the elastic element, and is generally not as good as the flexible coupling without elastic elements. Commonly used are elastic sleeve pin couplings, elastic pin couplings, plum-shaped couplings, and tire-type couplings. Couplings, serpentine spring couplings and reed couplings, etc.

Grid coupling

The grid coupling is a non-metallic coupling with excellent design, which relies on serpentine spring plates to transmit torque. Its vibration damping function is good, the use time is long, the load change is large, and the start is safe; the transmission efficiency is high, the operation is reliable, the noise is low, the smoothness is good, the design is simple, the assembly and disassembly are convenient, and the larger assembly bias is allowed.

JSD single flange grid coupling
JSD type single flange coupling product features: good vibration damping, long service life, large variable load range, safe starting, high transmission efficiency, reliable operation, low noise, good lubrication, simple structure, easy assembly and disassembly , Allowing a larger installation deviation.
Features:
1. Good vibration damping and long service life
2. Large range of bearing variable load, safe starting
3. High transmission efficiency and reliable operation
4. Low noise and good lubrication
5. Simple structure, convenient assembly and disassembly
6. Large installation deviation is allowed

Grid coupling

 The mobility of the coupling refers to the ability to compensate for the relative displacement of the two rotating components. Factors such as manufacturing and installation errors between the connected components, temperature changes during operation and load deformation, etc., all put forward requirements for portability. The movable performance compensates or relieves the additional load between shafts, bearings, couplings and other parts caused by the relative displacement between the rotating components. For occasions where the load starts or the working load changes, the coupling needs to have elastic elements that play a role in buffering and damping to protect the prime mover and the working machine from little or no damage.

Date

22 October 2020

Tags

Grid Coupling

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