QC/T 1048-2016Emergency hammers for buses (English PDF)

3.1 Bus emergency hammer

in the event of an emergency, it is convenient to remove and crush the emergency window tempered glass for easy escape; it consists of hammer head, hammer handle, bracket, alarm device, etc. (see Figure 1)

4.1 General requirements

4.1.4 The materials used for emergency hammers shall meet the requirements of GB/T 30512.

4.1.5 There shall be no flash burrs around the emergency hammer and the surface shall be rustproof.

4.1.6 The Emergency hammer handle, bracket shall be free of flash burrs. The surface is flat and smooth, without deformation. The color shall be red, no color difference, which can withstand slight-acid, slight-alkali.

4.1.7 The emergency hammer head and handle shall be assembled tightly and firmly.

4.1.1 General requirements

The bus emergency hammer (hereinafter referred to as "emergency hammer) shall meet the requirements of this Standard. It shall be manufactured in accordance with product drawings and technical documents approved by the prescribed procedures.

4.2 Size and quality requirements

4.2.1 The distance from the tip of the emergency hammer to the center of the hammer handle is l>=130mm. The inner part of the hammer handle is l1 >=85mm (see Figure 1).

4.3 Installation requirements

4.3.1 The emergency hammer is usually placed in the bracket. The bracket shall be installed adjacent to the emergency window and easy to see and access.

The installation height is 1000mm ~ 1700mm above the floor surface of the vehicle.

4.4 Temperature resistance

4.4.1 Low temperature resistance

The emergency hammer (including the bracket) shall be in accordance with the low temperature storage test requirements of 5.1.1.1 of GB/T 28046.4-2011. At a low temperature of (-40±2)°C, perform according to the test method specified in Test Ab of GB/T 2423 for 24h. After the low temperature storage test, its functional status shall meet the Class C requirements of GB/T 28046.1-2011.

4.5 Low temperature drop resistance

The emergency hammer (including the bracket) shall be subjected to the 1.5 m drop test according to the test conditions in Table 1.After the test, the emergency hammer head shall be free of deformation and no falling off. The tip of the hammer head shall be unchanged. The emergency hammer shall not be cracked or loosened. The alarm device shall work normally.

5.1 Flame retardancy test

The flame retardancy test of non-metallic materials is carried out in accordance with the provisions of GB 8410.

5.3 Alarm device test

5.3.1 Remove the emergency hammer from the fixed bracket. The alarm device shall sound an audible alarm. Use sound level meter to test. The test results shall comply with the requirements of 4.1.9.

5.3.2 The sound level meter for measurement shall meet the requirements of the Class 1 sound level meter specified in GB/T 3785.1."A" frequency weighting characteristics and "F" time weighting characteristics shall be used for measurement. Before and after measurement, the sound level meter shall be calibrated according to the manufacturer's specifications by using a Class 1 acoustic calibrator in accordance with GB/T 15173.

5.3.5 When measuring, record the maximum sound level displayed by the sound level meter of each measurement point. Take the maximum of the measurements of three measurement points as the final measurement result.

5.3.6 When the difference between the measured sample alarm sound and the background noise is greater than or equal to 10 dB(A), the measured value is not corrected. When the difference between the measured sample alarm sound and the background noise is less than 3 dB(A), the measured value is invalid.

When the difference between the measured sample alarm sound and the background noise is 3dB(A) ~ 9dB(A), the measured value shall be subtracted from the correction value in Table 2.

6.1 Inspection classification

The inspection of emergency hammer is divided into exit-factory inspection and type inspection.

6.3 Type inspection

6.3.1 Type inspection shall be performed in one of the following situations.

6.3.4 Type inspection items shall all meet the requirements. If there are unqualified items, double the number of samples shall be taken to re-inspect the unqualified items. If there is still unqualified item, this batch of products shall be determined as unqualified.

7.1 Marks

7.1.1 Product mark

Each product shall be marked in obvious part with the following information.

7.1.2 Marks of packaging box

The product packaging box shall have the following marks.

7.2 Packaging

7.2.1 The product shall be packed firmly and have anti-shock, moisture-proof and dust-proof measures.

7.2.2 Random files shall be placed in the box, including.

7.3 Transport

During the transport process, rain-proof measures shall be taken to avoid direct exposure to the sun. Avoid strong impacts and collisions.

7.4 Storage

The product shall be stored in a dry, ventilated, non-hazardous environment and shall be protected from corrosive substances.