AX-KL6 crash buffer meets the requirements of the EN 15551 standard. It is equipped with a set of shock absorbers composed of several elastic pads made of the EuroPad solid elastomer, as well as the Combigard T 105 hydraulic shock absorber. Both shock absorbers have proved their infallibility and functional reliability during many years of operation. The operating principle of the Crash module is based on plastic deformation of a piece of metal being sheared out of the external surface of the buffer body. The main advantages of the solution include a low level of forces during collision, their stable dissipation and the possibility to establish when the crash module should be activated. Additionally, by increasing the area of section being sheared out, it is possible to increase the amount of energy absorbed depending on the client’s needs. The buffer is equipped with a disk of the width of 450. The buffer has good working parameters and operational reliability within the temperature range from -40°C to +50°C.
AX-ZKL1 crash buffer
AX-ZKL1 crash buffer meets the requirements of the EN 15551 standard. It is equipped with a set of shock absorbers composed of several elastic pads made of the EuroPad solid elastomer, as well as the Combigard E 105 hydraulic shock absorber. Both shock absorbers have proved their infallibility and functional reliability during many years of operation. The operating principle of the Crash module is based on plastic deformation of a piece of metal being sheared out of the external surface of the buffer body. The main advantages of the solution include a low level of forces during collision, their stable dissipation and the possibility to establish when the crash module should be activated. Additionally, by increasing the area of section being sheared out, it is possible to increase the amount of energy absorbed depending on the client’s needs. The buffer is delivered with a disk of the width of 450. The device has good working parameters and operational reliability within the temperature range from -40°C to +50°C.
AX-ZKC1 crash buffer
AX-ZKC1 crash buffer meets the requirements of the EN 15551 standard. It is equipped with a set of shock absorbers composed of several elastic pads made of the EuroPad solid elastomer, as well as the Combigard T105 hydraulic shock absorber. Both shock absorbers have proved their infallibility and functional reliability during many years of operation. The operating principle of the Crash module is based on plastic deformation of a piece of metal being sheared out of the external surface of the buffer body. The main advantages of the solution include a low level of forces during collision, their stable dissipation and the possibility to establish when the crash module should be activated. Additionally, by increasing the area of section being sheared out, it is possible to increase the amount of energy absorbed depending on the client’s needs. The buffer is provided with a 340x650 disk. The device has good working parameters and operational reliability within the temperature range from -40°C to +50°C.
Buffer with intermediate plate and Combigard R 105
The buffer with an intermediate plate meets the requirements of the EN 15551 standard. It is equipped with a set of shock absorbers featuring several friction springs as well as Combigard R 105 hydraulic shock absorber. Both shock absorbers have proved their infallibility and functional reliability during many years of operation. The buffer casing is manufactured in a unique process of hot extrusion. The buffer has good working parameters and operational reliability within the temperature range from -40°C to +50°C. The product has the EBA certificate.
The buffer with an intermediate plate meets the requirements of the EN 15551 standards. It is equipped with a set of shock absorbers featuring several friction springs as well as the Combigard T 105 hydraulic shock absorber. Both shock absorbers have proved their infallibility and functional reliability during many years of operation. The buffer casing is manufactured in a unique process of hot extrusion. The buffer has good working parameters and operational reliability within the temperature range from -40°C to +50°C. The product has the EBA certificate.
73ZWY draft gear (class T2) the requirements of: GOST 3475-81, AAR-901 and UIC 524.It is designed for cars equipped with automatic couplers. It can also be installed in any car with enough space for shock absorbing units compliant with the standards. 73ZWY is a module interchangeable with the previously used friction or hydraulic absorbing equipment, and is fitted with a high-performance elastomer shock absorber as well as an additional elastic element made of solid elastomer, working in conjunction with the equipment. The main advantages of the device include high durability and reliability while operating within a wide range of temperatures from -60ºC to +50ºC.
Elastomer shock absorber designed for heavy locomotives. KX-100 shock absorber has good working parameters and operational reliability within the required range of temperatures. The free-flowing elastomer maintains its properties for many years. The material is also recyclable. The shock absorber’s technical parameters meet the most demanding requirements of the clients, thus it can be used in the heaviest duty applications – currently it is used in a trains of 20 000 tons.
Technical documentation RG 20 draw-gear is designed for freight cars and locomotives. It meets the requirements of the EN 15566 standard, as well as the UIC 520 leaflet, and it ensures energy absorption of 20 kJ. The device is equipped with elastic components made of the EuroPad solid elastomer ensuring premium technical parameters (available also with TecsPak). The EuroPad elastomer pads are made of the finest quality materials which maintain their characteristics for many years. The material is also recyclable. Due to its compact structure, the device has relatively low weight. The draw-gear has good working parameters and operational reliability within the temperature range from -40°C to +50°C. The product has the EBA and TSI certificates.
The RG20F draw-gear is designed for passenger cars. It meets the requirements of the EN 15566 standard, as well as the UIC 567-3, UIC 520 leaflet, and enables absorbing energy up to 20 kJ. The draw-gear is equipped with elastic components made of the EuroPad solid elastomer ensuring premium technical parameters (available also with TecsPak). The EuroPads are made of the finest quality materials which maintain their characteristics for many years. The material is also recyclable. Due to its compact structure, the device has relatively low weight. The draw gear has good working parameters and operational reliability within the temperature range from -40°C to +50°C. The product has EBA certificate.
Technical documentation
The KX-AM-3 draw-gear is designed for passnger cars. It meets the requirements of the EN 15566 standard, as well as the UIC 520 leaflet, and ensures energy absorption of 20 kJ. The device is equipped with elastic components made of the EuroPad solid elastomer ensuring premium technical parameters. The elastomer pads are made of the finest quality materials which maintain their characteristics for many years. The material is also recyclable. Due to its compact structure, the device has relatively low weight. The draw-gear has good working parameters and operational reliability within the temperature range from -40°C to +50°C. It has the Rail Transport Office and TSI certificates.
RG 20-1500 LF draw-gear is designed for locomotives, and it features a mounting flange. The draw-gear is equipped with elastic components ensuring premium technical parameters. The elastomer pads are made of the finest quality materials. The device meets the requirements of the EN 15566 standard. The product has the EBA certificate.
In freight locomotives coil springs are used as primary suspension and as secondary suspension. Due to space and load requirements regarding the primary springs, linear spring sets are usually used. Linear coil spring means a cylindrical coil spring with constant diameter and constant wire diameter. The spring ends are either “closed and ground” or “taper rolled, closed and ground”.
Linear spring set means that two linear coil springs with the same length are put together one into the other. Therefore the inner spring has a smaller outer diameter than the inner diameter of the outer spring. The inner spring also has a smaller wire diameter. The two springs of one set must have different coiling directions (one left, one right hand coiled).
The coil springs used in the secondary suspension of locomotives are usually single linear coil springs. As the lateral deflections are quite high, the springs must have a bigger length than primary springs. The direction of the lateral displacement under vertical load (“chasse”) is marked on the springs and they have to be mounted into the vehicle according to the correct orientation of this marking.
As the lateral deflection of the secondary springs is increasing with smaller track radii and freight locomotives also have to drive into marshalling yards with such small track radii, the stress in the springs is usually very high. The secondary springs for freight locomotives in particular therefore require a high material grade and production quality.
Production of rings used for friction springs which meet the requirements of the chart UIC 827-2 takes place in the Czech company owned by the Group. The springs are manufactured in a wide range of various diameters from 80 to 400 mm. The rings are used in friction springs of Ringfeder type applied in buffers, tractive apparatuses, pull rod bars and automatic couplers.
Features:
- Hot formed, highest quality materials;
- Various shapes possible;
- Linear characteristic;
- Safe against overloading;
- Big damping due to friction;
- Characteristic independent of the speed;
- Characteristic independent of the temperature;
- Proven in rail applications.
| F | Spring terminal force | d1 | Inner diameter |
| Se | Stroke for 1 element | b/2 | Half ring width |
| We | Spring work for 1 element | D2 | Guide outer diameter |
| he | Height of 1 element | d2 | Guide inner diameter |
Example of spring calculation
- This spring consists of 4 elements type 19600:
- End force = 600 kN
- Stroke = 4 x 4,4 (Se ) = 17,6 mm
- Spring work (Absorbed energy) = 4 x 1300 (We) = 5200 J
- Spring length = 4 x 23,4 (he) = 93,6 mm
By adding additional elements, we increase the stroke (length of the spring), the absorbed energy (spring work) but the end force will remain the same. End force still 600 kN.
During the operation of the friction spring two thirds of the input energy is dissipated as frictional heat. The recoil force at any point on the diagram is approximately equal 1 / 3 of the relative compressive force F. The capacity of the spring is represented by the total area shown below the load curve.
Friction springs are generally designed to „block”, so it is therefore ensured that the admissible stresses cannot be exceeded and the friction spring will not be damaged.
Applications:
- Buffers;
- Draw gears;
- Draw bars;
- (Semi) automatic couplers .