Tongling Tieke Railway Equipment Co.,Ltd
China Railway Wagons Manufacturer 10+ Years
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Brief introduction:
KZW-A Automatic variable load adjusting device can automatically sensing and continuously adjusting the brake cylinder’s pressure according to the varied loads of railway freight wagons. So it can effectively improve the braking performance of the railway vehicle, greatly reduce the change range of braking rate under different load conditions from empty to loaded, and make the braking rate of each vehicle of train marshal relatively uniform.
KZW-A automatic variable load adjusting device consists of two parts: weighing mechanism and pressure limiting valve assembly. The weight measuring mechanism is composed of a sensor and a suppression plate. There are two kinds of sensors: one kind is a C-A sensing valve, whose contact rod’s maximum stroke is 21 mm, and another kind’s maximum stroke is 27 mm. The pressure limiting valve consists of a pressure limiting valve and a pipe seat.
Main parameters:
| Name | Automatic Variable Load Adjusting Device |
| Application | Freight wagon air brake system |
| Working temperature | -50℃～+70℃ |
| Applicable train pipe rated pressure | 500 KPa, 600 KPa |
| Brake cylinder pressure full loaded | 360±10 kPa |
| Brake cylinder pressure half loaded | 230±40 kPa |
| Brake cylinder pressure empty | 140±15 kPa (when train rated pressure 500 kPa); 160±15 kPa (when train rated pressure 600 kPa) |
| Sensor stroke | 21 mm or 27 mm |
How it works?
With the changes of freight car’s loads, the bogie spring’s deflection also changes accordingly. The sensor of the load adjustment device is installed on the bogie and the regulating springs could sense the load variation. The working principal is that the air pressure of the pressure reducing air cylinder plus the pressure of the regulating spring is balanced with the pressure of the brake cylinder. Then it distributes the pressure air of the pressure reducing air cylinder and the brake cylinder according to the pressure of the regulating spring, so as to realize automatic adjusting brake cylinder’s pressure. According to its function, there shows three functions: braking, release and status display.
Detail image:
The arrangement of automatic variable load adjust device in train's air brake system:
Why choose us?
FAQ:
Q1: Are you a trading company or a factory?
A: We are directly a factory and we manufacture and export railway wagons, bogies and various wagon parts directly.
Q2: Do you have design ability to provide customized railway wagon parts?
A: Yes, we have professional technical team and we are familiar with international railway standards like UIC, AAR, EN and we are able to provide railway parts according to customer requirements.
Q3: Chinese railway gauge is 1435mm, but our country’s is 1000mm gauge, will this be a problem for you?
A: Of course not, we are able to design railway wagon bogies of different gauges like 1435mm, 1000mm, 1067mm, 1520mm or other required railway gauges.
Q4: Why should I choose you, compared with your competitors?
A: Tieke Railway was transformed from wagons factory belong to Chinese Railway in 2016 and the company have over 10 years’ experiences in manufacturing railway wagons and bogies; Now as Tieke Railway is a private company and adopt modern market management strategies, our services are flexible and more considerate and our cost is more controllable.
Q5: What should I provide to get a quotation from you?
A: You could send your inquiry with detail drawings, product photos, detail technical parameters or requirement description. A complete requirement input is very important for us to provide an accurate quotation to you.