GB 7956.12-2015Fire fighting vehicles - Part 12: Aerial fire fighting vehicle (English PDF)

4.2.2 Operating instructions and mark

4.2.2.1 Detailed illustration or literal operating instructions and warning specifications shall be arranged at operating platform of stabilizer, rescue cage and turntable of aerial fire fighting vehicle visible for the operation personnel.

4.2.3 Hydraulic system

4.2.3.1 Hydraulic oil tank volume of aerial fire fighting vehicle shall ensure the aerial fire fighting vehicle is able to continuously complete 50 operation cycles, and the temperature of hydraulic oil in the oil tank shall not be greater than 90°C. There shall be no boom (ladder) quiver, creeping or blocking due to overhigh oil temperature, and the hydraulic elements and components shall be free from oil leakage, oil penetration or damage.

4.2.4 Safety requirements

4.2.4.1 Aerial fire fighting vehicle shall possess the function of interlocking of lower- and upper-vehicles; the boom (ladder) cannot move before the stabilizer is extended and leveled and supported reliably; before boom (ladder) retracts to the support bracket, the stabilizer of lower-vehicle cannot retract. Interlock function of lower- and upper-vehicles shall be realized automatically.

4.2.4.7 The safety coefficient for pulling the rigging like steel cable, chain, etc. of boom (ladder) shall not be less than 5, and that for other rigging shall not be less than 2.

4.2.4.8 Operating platform of aerial fire fighting vehicle shall not be equipped with device that directly adjust the parameters of hydraulic or electrical system. The places for parameter adjustment can only be opened with special tools and shall be with warning specifications whose color meets the requirements of Clause 9 in GB 15052-2010 and content contains the text "adjustment ought to be implemented by experienced personnel" with font size enabling operation personnel to read easily.

4.2.5 Special requirements

4.2.5.1 Platform fire fighting vehicle 4.2.5.1.1 For platform fire fighting vehicles with the maximum operating height not greater than 35 m, the duration for its boom lifting from driving position to the maximum operating height and rotating by 90° shall be less than 150s. For platform fire fighting vehicles with the maximum operating height greater than 35 m but not greater than 70 m, such duration shall increase by 40 s for each 10 m of the part exceeding 35 m. 4.2.5.1.2 The duration for stabilizer extending, supporting and being leveled shall not be greater than 50 s. 4.2.5.1.3 The area of rescue cage of platform fire fighting vehicle shall be greater than 1.5m2. 4.2.5.1.4 As for platform fire fighting vehicle with the rescue cage monitor not spraying water, the rated load of its rescue cage shall not be less than 270kg. 4.2.5.1.5 If lateral cat ladder is arranged for platform fire fighting vehicle, auxiliary ladder able of ensuring the personnel arrive at ground surface safely shall be arranged; there shall be transitive ladder section connecting rescue cage on the top of crawling ladder.

4.2.5.2 Aerial ladder fire fighting vehicle 4.2.5.2.1 For aerial ladder fire fighting vehicles with a maximum operating height not greater than 40 m, the duration for ladder lifting from driving position to the maximum operating height and rotating by 90° shall be less than 120s. 4.2.5.2.2 The duration for stabilizer extending, supporting and being leveled shall not be greater than 40 s. 4.2.5.2.3 As for aerial ladder fire fighting vehicle, the area of its rescue cage shall be greater than 1.0m2 and that of its lift shall be greater than 0.8m2. 4.2.5.2.4 As for aerial ladder fire fighting vehicle with the rescue cage monitor not spraying water, the rated load of its rescue cage shall not be less than 180kg. 4.2.5.2.5 As for aerial ladder fire fighting vehicle, auxiliary ladder, which may directly arrive the ground surface when unfolded, shall be arranged at the lower end of its ladder. 4.2.5.2.7 If ladder step is round, the diameter of ladder step including anti-skidding layer shall be greater than 32 mm. 4.2.5.2.8 If ladder step is of other shape, the sectional area of ladder step shall not be less than 775 mm2; as for the section including anti-skidding layer, the length of long side is not greater than 80 mm and that of the short side is not less than 19 mm. 4.2.5.2.9 The ladder step installed on ladder of aerial ladder fire fighting vehicle shall be able to withstand a force of 2,300N without fracture or obvious permanent deformation. 4.2.5.2.10 Ladder of aerial ladder fire fighting vehicle shall possess driving locking device which shall ensure the ladder will not stretch when the aerial ladder fire fighting vehicle imminently brakes at 30 km/h and shall be without additional switch. 4.2.5.2.11 As for aerial ladder fire fighting vehicle equipped with manned rescue cage and fire monitor, its stability shall comply with the requirements of 4.2.4.4, the ladder shall be extended to working limit position with an angle of 45°; 4.2.5.2.12 Fire monitor installed at ladder top shall not influence the motion of ladder or hinder the personnel approaching the ladder top according to operation specifications. The depression angle and elevation angle for fire monitor winding the horizontal line shall be greater than 60° and the left swing angle and right swing angle for it winding the ladder parallel line shall be greater than 45°.

5.2.2 Operating instructions and mark inspection

5.2.2.1 Inspect the operation and warning specifications at the operating platforms of stabilizer, rescue cage and turntable, then judge whether the test results comply with those specified in 4.2.2.1.

5.2.3 Hydraulic system test

5.2.3.1 Carry out the operation cycle continuously for 50 times with the mode specified in

5.4 Test for Special Devices...

5.4.3 Test for the rescue cage

5.4.3.1 Identification inspection 5.4.3.1.1 Visually inspect the mark contents, distinctness and fixing mode in the rescue cage; judge whether the test results comply with those specified in 4.4.3.1.1. 5.4.3.1.2 Visually inspect whether the safety range and operating range is determined automatically according to the rescue cage load and spraying conditions of the fire monitor. Judge whether the test results comply with those specified in 4.4.3.1.2.

6.1 Inspection Classification

6.1.1 Exit-factory inspection Exit-factory inspection items shall at least include those items given in Table 3; the inspection results shall comply with the requirements of GB 7956.1-2014 and this part.

6.1.2 Type inspection

6.2 Judgement Rules In Table 3, as for 5.1.4,

5.1.6 of item 1,

5.5.7 of item 5, items 8, 13, 16, 17, 18 and 23 as well as

4.5.3 of item 19, the product shall be judged as unacceptable if one of the items is rejected. For the rest items, if one of them fails to meet the requirements of this part, then it is allowed to rework the rejected item for re-inspection; if it is still unacceptable, then the product shall be judged as unacceptable.

7.2 Packaging

7.2.1 Aerial fire fighting vehicles shall be bare-packed upon exit-factory, and the documents accompanying the vehicle shall be packaged with damp-proof materials.

7.2.2 All the vehicle doors and toolboxes shall be closed and locked tightly.

7.3 Transport

7.3.1 Transport by driving shall comply with the requirements regarding driving of new vehicles in the user's manual.

7.3.2 Transport by railway (waterway) shall be in accordance with the relevant requirements.