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DG34C fire truck is a kind of main battle vehicle integrated with water tank, high pressure spray and ladder truck functions, widely applied in firefighting and rescue work of cities and towns, mines, oil fields, factories and other middle-high rise buildings, and is a necessity for high-rise firefighting, personnel and property rescue.
I. Main Technical Characteristics
1. Benz 3344 type II chassis is adopted into DG34C, which has advanced performances, strong bearing capacity and full power reserves (320kw/31.45t) and its emission level reaches EURO 3.
2. The firefighting system has all-round functions and the pump and fire monitor have outstanding performance. The PSP1500 pump system is adopted from American Darley Company, which is driven by full power take-off force, reliable and suitable for long time operation. The water monitor installed on the platform is 5177 electric-type fire monitor produced by American Akron Company. Water inlet, outlet and control valves are completely equipped for ease of operation.
3. It's designed to have an in-built fire-fighting tank with a capacity of 4.7 tons of water, and a manual type PS30/50D fire monitor is equipped on the upper part of the tank for fire fighting operation.
4. Based on the PLC and CAN Bus distributed control technology, the vehicle can achieve automatic leveling in lower structure, sub-regional range control, platform load weighting, platform ultrasonic collision detection, upper and lower structure posture dynamic monitoring and single-key operation presentation function. The vehicle has a series of leading technologies.
5. Innovated structure promotes working performance and safety. The telescopic boom is octagon fitted with great circle arc section, with hydraulic cable transmission chain in-laid, which gives it a compact structure, good appearance and a strong bearing capacity. Auxiliary frame assembly is a large box-structure in "H" supporting mode; outrigger box is obliquely set, so as to enhance leveling function, stress performance as well as getting good appearance. Turntable console and seat are both designed integrally, elements and pieces are rationally distributed; the closure plate at back of turntable is designed for adjustable counterweight, efficiently alleviating overturning moment of upper structure and balancing front axle shaft load.
6. Lifting holes are added, so that lifting function can be realized by elevation of amplitude cylinder. The basic boom head can lift a weight of 2t and the lower part of platform can lift 0.4t weight.
7. LS load-sensing control system of double variable displacement piston pump is adopted in hydraulic system, proportional valve opening characteristic curve is optimized, working pressure for leveling function is promoted and operation performance is improved.
8. Working parameters of the overall vehicle are ahead of domestic market. The maximum height is -3~34.5m, the maximum working range is 21m, rational layout and well-distributed axles and loads give full play to vehicle stability and boom bearing capacity.
9. Enriched optional parts. The material of tanker body is customized according to customer's demand; all of the following systems are offered as options, such as reverse monitoring system, electric centralized lubricating system, on-board generating unit and high power lighting system, fire scene monitoring system and anemometer.
II. Safety Protective Devices on DG34C Fire Truck
1. Electronic-type working range limiter
2. Electronic working range display
3. Upper/lower structure interlocking device
If outriggers are not appropriately set, outrigger soft leg alarm "outrigger indicator lamp"Â won't come on and upper structure won't be able to work; if boom fails to rest on boom frame, outriggers won't work.
4. Soft leg alarm device
5. Lower structure leveling device (auto, manual)
6. Single-side working area limit device
7. Cabin area protection device
Only when telescopic boom elevation exceeds 40° within 50° of sector area in front of the vehicle, can crank arm "extend", so that upper structure can be able to rotate and avoid colliding with the cab.
8. Turntable mid-position protection device
If boom is not right at the middle of boom frame, "turntable centration"Â indicator lamp won't come on, so that boom won't rest on boom frame.
9. Work platform leveling device (auto, manual)
10. Work platform anti-collision device
11. Work platform swing limiting device
12. Work platform weighing device
13. Work platform mid-position protection device
14. Work platform anti-tipping device
15. Telescoping protection device
16. Crank arm elevation limiting device
17. Extreme position stop device
When telescopic boom elevation reaches 82°or -3° and when inclination angle between crank arm and main boom is 0°or 180° and when telescopic boom fully is fully extended or retracted, working speed will automatically stop.
18. Telescopic chain anti-loosening detection device
19. Crank arm ladder status detection device
20. Manual emergency operation
21. Emergency boom lowering device
22. Emergency power unit
When main engine is at faulty and gasoline engine fails to start up in time, the operator may operate the switch so that the telescopic boom can automatically retract and lower.
Main technical parameters in driving status:
| Type | Item | Parameter | |
|
Dimension parameter  |
Overall length (mm) | 12340 | |
| Overall width (mm) | 2500 | ||
| Overall height (mm) | 3985 | ||
| Wheel space | The 1st and 2nd shaft (mm) | 4500 | |
| The 2nd and 3rd shaft (mm) | 1350 | ||
| Wheel track | Front shaft (mm) | 2035 | |
| Middle and rear shaft (mm) | 1804 | ||
|
Chassis Model |
Model | Actros 3344 | |
| Type | Second type | ||
| Manufacturer | Daimler AG | ||
|
Power Parameter |
Engine model | OM501LA.III/18 | |
| Engine power/rev. speed (kw/r/min) | 320/1800 | ||
| Manufacturer | Daimler AG | ||
|
Weight Parameter |
Full-laden weight (kg) | 31450 | |
| Shaft load | Front shaft (kg) | 7120 | |
| Rear shaft (kg) | 24330 | ||
|
Rated loading mass of extinguishing agent |
Water (kg) | 4700 | |
|
Running parameter  |
Max. Speed (km/h) | ≥90 | |
| Min. turning diameter (m) | ≤20 | ||
| Approaching angle (°) | 16 | ||
| Departure angle (°) | 9 | ||
| Braking distance (speed is 30(Km/h))(m) | ≤10 | ||
| Min. ground clearance (mm) | 290 | ||
| Max. Gradeability | ≥25% | ||
2. Main technical parameters in working status:
| Type | Item | Parameter | |||
|
main performance Parameter |
Rated working height (m) | 34.5 | |||
| Rated load of elevating platform         kg | 400 | ||||
|
Overall dimension of elevating platform:Â (L x W x H) mm |
2000×900×1100 | ||||
| The max. lowering depth of elevating platform              m | 3 | ||||
| Max. working range (m) | 21 | ||||
| The first boom section        mm | 10328 | ||||
| The second boom section      mm | 10475 | ||||
| The third boom section        mm | 11425 | ||||
| The forth boom section        mm | 5500 | ||||
| Outrigger span (longitudinal x transverse) (mm) | 6200×5800 | ||||
| Luffing range     (°) | -3 ~ 82 | ||||
|
Working speed |
Boom operation time (s) | ≤135 | |||
| Outrigger extension time (s) | ≤30 | ||||
| Slewing speed (r/min) | 0~1.5 | ||||
|
Fire fighting performance |
Fire fighting pump |
Rated flow      L/S | 50 | ||
| Rated pressure   MPa | 1.5 | ||||
| Water suction depth  m | ≥7 | ||||
| Time of drawing water  s | ≤50 | ||||
|
Fire Water monitor |
Rated flow          L/S | 50 | 40 | ||
| Rated spray pressure  MPa | ≤0.8 | ≤1 | |||
| Spray range   The basic operation course of the winding machine the Automatic Winding Machine looks very complex, but it is not very difficult to operate in practice. It is mainly caused by being unfamiliar with the structure of the winding machine, and the company has no professional and technical personnel training. As a result, ordinary people have no way to start their winding machine without technicians. The basic equipment of the winding machine consists of mechanical parts and electrical control system. However, with the rapid development of science and technology, modern automatic winding machine will be more difficult and sophisticated than other electronic processing equipment because it integrates many technologies such as electrical control, sensing technology, pneumatic and mechanical transmission, photoelectric detection and so on, Fuying electronics has adopted rite winding machine for many years and has familiar experience in the use of winding equipment. After we introduce it here, we believe that it can be operated simply as long as it is operated according to the method. Starting position, enamelled wire specification and winding width are the three most important winding parameters of winding machine, which are commonly used in skeleton coil. 1. How to set the winding position? Where is the winding position of the skeleton coil? In fact, there is no fixed position at the starting point of starting winding on the skeleton. The position and the beginning of the coil are determined by the coil model. Generally speaking, the specific starting position and value can be measured as long as the measurement function of the equipment control system is used; Technicians can also measure the value manually, take the specific position as the reference point and use ruler to actually measure. When setting this point, pay attention to the specific winding direction of the coil. 2. For the specific setting of enamelled wire specifications, the enamelled wires used in daily use have different wire diameters. Different enamelled wire specification settings will produce different wire arrangement effects. When using enamelled wires of different materials, pay attention to correcting the specific value of wire diameter, so that the copper wire will not be deformed. 3. Setting of winding width value we can understand the value from the starting point of the winding to the end point of the winding. Generally, the length of the winding of the coil can be known by the value straight. Of course, the small deformation caused by the applied force must be considered when setting, which will have a certain impact on the production of the winding width value. Therefore, the minimum value should be taken as the winding width by using a variety of measurement methods. 4. For the wire type characteristics of different winding coils, we should also have a good understanding of the specific number of turns, folding layers and average winding speed requirements of the product. The winding speed of the thick wire model should not be too fast. If the speed is too fast, it will cause problems such as wire jumper and step loss, and quality problems. The torque force of the winding machine must be strengthened when it is used at medium and low speed. 5. When the wound coil is square, the winding speed of the wound coil cannot be too fast, otherwise it will produce concave convex unevenness, affecting the number of folding layers and turns. Moreover, the distance between the coil and the cable arranger shall be reasonably arranged. If it is low, it is easy to fall into other layers, and if it is high, it is easy to jumper. At the same time, it is not allowed to drink the cable arranger too far, otherwise it will affect the accuracy. 6. The winding machine will reserve the functions of preset number of turns, automatic stop, positive and negative winding, automatic cross slot and so on. In the process of use, if you want to protect the winding machine, you must start and stop the idle according to steps to reduce the tension on the structure of the winding machine and the enamelled wire. Generally, it should be set within three turns. This article is from Fuying electronics and is not allowed to be reproduced without consent. 8 Axis Winding Machinery,automatic winding machine,automatic coil winding machine SUZHOU DEGU MACHINERY CO.,LTD , https://www.deguwindingmachine.com | |||||