Multifunctional semi-trailers "Krone" belong to the most common group of cargo trailers coupled with truck tractors. The devices are designed for transporting a variety of cargo. The machines are one, two or three axle platforms. It has a frame covered with an awning (special durable fabric). The rear part is equipped with a flap or swing gate with a pair of leaves.
About the manufacturer
Krone semi-trailers are produced by a company named after the creator B. Krone. At first, the company was engaged in the production of agricultural machinery. The production of towbars began in 1971. Since 2001, a plant in Denmark began producing semi-trailer refrigerators.
The Krone company consists of four divisions, each of which deals with a specific area. Three branches are located in Germany, one more in Denmark. The line of semi-trailers includes 10 modifications. The company is now led by the fourth generation of the founder's family.
Where can I buy
Semi-trailers are sold from warehouses, dealers or through advertisements, for example:
- model SD, year of manufacture 2014, maximum tonnage - 39 thousand kg, weight - 6,350 kg, payload - 32,650 kg, price ≈ 9,918 $ or 8,900 €;
- onboard model, number ID 9513, 2010, gross weight 40 tons, sold for RUB 630,569;
- refrigerator Krone SD / Carrier Vector 1550, 2015, total weight 39 tons, located in Germany, Salzgitter, price RUB 1,626,019.
Equipment from is in great demand because consumables for these products are easy to buy in warehouses or service centers, repairs are simple, as is operation.
Kinds
There are two types of curtain-sided semi-trailers: flatbed and curtain-sided. The first option is equipped with removable or folding aluminum sides. Its frame consists of vertical and horizontal posts connected by special crossbars. The upper part of the equipment is covered with an awning. It is attached to the sides using a cable or fixing hooks. The trailer is unloaded and loaded both from the rear through the doors and from the side. Such modifications are used primarily for transporting consolidated cargo, which require reliable and rigid fixation.
Krone SDP semi-trailers belong to the second type. The curtain model has no sides and consists of three separate curtains (on the sides and top). The difference from the first option is technological simplicity and versatility. The advantages also include easier loading and unloading and lower cost.
General characteristics of Krone SD semi-trailers
Similar equipment guarantees safe driving on roads with any surface and confidence for the owners of goods that they will be delivered within the agreed time and in complete safety. The sliding roof on the semi-trailer increases the ways of carrying out loading and unloading operations.
Purpose and benefits
Semi-trailers from a German company with the KRONE logo are distinguished by their smooth running and reliable design, which is why they are highly popular in Europe.
Aerodynamic properties help save fuel because the pressure of oncoming air is reduced, and oil distillation products are constantly rising in price, so the opportunity to reduce fuel consumption is very attractive in the eyes of especially large cargo carriers.
A special bonus is that all semi-trailers are manufactured in factories located in the European part of the mainland: Germany, Denmark and Turkey.
Design Features
The process of using Krone semi-trailers is associated with minimal costs and low consumption of energy resources. When developing new modifications, attention is paid to safety, because this is the most important aspect for technology due to the heavy congestion of highways.
The low price and range of semi-trailers allow users to choose the best option for their needs among the offered models:
- for standard cargo that is susceptible to exposure to weather conditions, you need to choose a curtain option, where a durable awning protects the product during movement;
- for food and fruit - choose refrigerators or isothermal bodies;
- a spare fuel tank for the semi-trailer is possible;
- structures of non-standard sizes and containers are transported on open flatbed vehicles or trailers.
We will talk about the features of the models in detail in the next section of the article.
Chassis
This part consists of a pair of T-shaped longitudinal beams, a central similar block, and an outer frame. The elements are welded to the cross members and traverses. The external multi-lock frame is designed to universally secure loads every 10 cm. Its height at the front is 12.5 cm.
In addition, this node includes the following elements:
- The kingpin is two-inch with a front overhang radius of 2.04 cm.
- Lateral anti-tackle protection device.
- Rear analogue protection.
- The superstructure has an internal length of 13.6 m and a width of 2.48 m.
The support legs include a pair of mechanically driven jacks with a maximum load capacity of 12 tons each. They have a cylindrical shape, a base plate, and are controlled from the right side.
As for the axles, there are 3 of them in the design, with a maximum load of 9 tons for each. The center distance is 1.31 m. SAF axles are equipped with air suspension and a disc brake system. The axle beam is of a reinforced type, the distance of the axle unit is 7.65 mm.
Brakes and wheels
Krone semi-trailers are equipped with a disc brake system. It includes an external connector for connecting diagnostic equipment. The parking brake is equipped with a spring drive, connectors for activating the system are located on the front wall, the height is about 80 centimeters from the edge of the platform.
There are also two wheel chocks, an EBS control system, and a pair of indicators on each axle. There are modulators with an electronic stabilization system. It is worth noting that the Krone 27 semi-trailer can only be operated with a tractor that has an ABS option.
The design uses six wheels of type 385/65 R 22.5 (11.75/22.5), and also has one spare element. The rim is centered on the hub. The wings are made of polymer and have a semicircular shape. The spare tire holder is a basket type and is located behind the axle device.
Lighting and additional elements
Krone semi-trailers are equipped with a lighting system that complies with EU standards 76/756/EWG ff.
The package includes:
- A pair of flashlights for illuminating the license plate.
- Two sized lights with rubber handles.
- Electrical connectors on the front wall (height - 30 cm from the edge of the platform).
- Side LED lights.
- 7-pin twelve-volt connector.
- Socket for additional functions (7 pins, 12 V).
- 15-pin connector.
- Rear multifunctional lighting elements.
- Fog lights and spotlight.
- Red and yellow reflectors on the rear wheel chock.
Additional accessories include a plastic tool box (600/500/480 mm). It is mounted behind the axial device.
Bottom and roof
The bottom part belongs to the classification of models type VO 13620 B. The thickness of the floor is 3 centimeters, it is additionally protected from moisture, made of plywood boards, sealed at all seams. The strength of the bottom complies with the DIN 283 standard. The maximum axle load when operating a loader is 7 tons.
The Krona semi-trailer (curtain) is equipped with a roof modification AB 13620 AP. It consists of external universal longitudinal crossbars, the material for which is light alloy. The roof is adapted for mounting an awning and sliding racks.
The second option for the top of the trailer in question could be a sliding roof of the Edscha type (Lite 113). It has a height of 11.3 centimeters and a slope of 0 mm. The internal height to the lower outer edge of the longitudinal crossbar is 2.6 m. The rear opening has a similar indicator. The element can only be transformed towards the rear part and is equipped with a rubber lip seal on the longitudinal crossbar.
Main technical characteristics
I-beams are strength elements that provide a more efficient connection of the structure to achieve maximum load on the semi-trailer.
To ensure uniform axle loading, smooth running and increased stability, the semi-trailer has a modern air spring suspension built into it.
The possible load on the axles is 24,000 kg - 8,000 kg for each. The axles used are BPW eco plus or SAF Integral. Other options are possible depending on the year of manufacture. The permissible weight also varies from 36,000 to 39,000 kg.
The table provides a description of the main characteristics
| Length, m | 13,62 |
| Width, m | 2,48 |
| Height, m | 2,6-2,8 |
| Number of axes | 3 |
| Number of wheels | 6 |
| Body volume, cubic meters | 92 |
The functionality of the sdp 27 crown semi-trailer is designed in such a way that a basket-type holder for a spare wheel is installed here.
The disc brake system is equipped with an EBS device to reduce brake wear and also control stability while driving on the road.
The built-in ABS stabilization system with a 2S/2M configuration (sensor and modulator installed on one side of the side) prevents wheel locking in the event of braking.
The declared strength of the bottom according to DIN 283 is designed for operation of a loader weighing up to 7,000 kg. The thickness of the floor is 3 cm, and the installed plywood board reliably protects from moisture, as a sealed space is formed.
An awning and sliding racks can be installed on the roof. There are also models with a roof that can be moved to the rear of the semi-trailer.
Walls and racks
The front through wall is made of steel, has durable corner posts and side loading restrictions. The inside is reinforced with sheet plywood and equipped with a device for removing the awning.
The rear wall of the Krone SDP 27 semi-trailer is a steel gate, which is equipped with double locking bars along its entire height. The element is equipped with a ratchet for tensioning the awning and straps for cross-fixing the curtain. Full height steel gate with double locking bars, opening width 2.46 metres.
Three pairs of racks are mounted opposite each other and can be mounted in six positions. The racks have slots for removable strips, one of which is located below the floor, and four more are evenly spaced throughout the rest of the rack.
What is an awning?
The Krona semi-trailer, the characteristics of which are given above, is equipped with one PVC awning. It has through vertical reinforcements. At the top there are rollers that allow you to stretch the material. A stainless steel locking device is located at the bottom, which ensures the stability of the awning. It is adapted for a sliding roof, corresponds to the required height, and has contour markings on the sides. The awning can be made in various colors, is highly durable, and protects the cargo from moisture, sun and other weather and mechanical influences.
What is SD
Semi-trailer Krone SD.
Russian truckers actively use the Krone SD semi-trailer and gave it a positive assessment.
The abbreviation of two Latin letters SD in the name is the factory marking adopted by manufacturers, which is used to designate the company’s semi-trailer models, from curtainsiders and flatbeds to container ships or refrigerators.
