This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of fixed beam scales. This standard applies to fixed beam scales (underground scales, steel scales, livestock scales, etc.). GB/T 5037-1994 Fixed beam scales GB/T5037-1994 Standard download decompression password: www.bzxz.net
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of fixed beam scales. This standard applies to fixed beam scales (underground scales, steel scales, livestock scales, etc.).

National Standard of the People's Republic of China
Stationary lever scale
Stationary lever srale
This standard refers to the international legal metrology organization (ML) R76% automatic weighing instrument international recommendation subject content and scope of application
GB/T 5037--94
Replaces (H 5037
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of stationary lever scales. Applicable to stationary lever scales (ground scales, steel scales, animal scales, etc.) 2 Reference standards
GB 191: Packaging, storage and transportation pictorial symbols
GB3052 Method for compiling scale product models
GB6388 Transport packaging receipt and delivery labeling table
G1424 Scale terminology
3 Terms, symbols and codes
Terms, symbols and codes should comply with the requirements of GB/T1250. 4 Product classification
4.1 Product model
Product model is compiled according to the provisions of GB3032. 4.2 Product specifications
4.2.1 Maximum weighing series specifications are 1, 2.3, 5, 10, 15.20, 30, 50, 60, 80.100 4.2.2 The effective size of the load carrier of the scale is expressed in meters. 4.3 Basic parameters The basic parameters shall comply with the provisions of Table 1 and Table 2. Table 1 Medium accuracy level gate Maximum a) 10 kg*+ mxs.1n0 t 20 1~.max Verification scale value (e) [0 g510 kg 20 kgse) If 10 exceeds 1u k, the minimum weighing value is 10e. Approved by the State Administration of Technical Supervision on March 15, 1994 Verification scale value (\) 1 000-na10 090
Minimum scale capacity (min)
1994-12-01 implementation
Maximum scale capacity (naz)
2 kg*max11 t
GB/T 503794
Table 2 General accuracy level LI
Control value te!
3 gcl0 kg
29 kyse
Note: The rated scale value is equal to the actual scale value Note 5 Technical requirements
5.1 State error
The allowable error of scale reading shall comply with the provisions of Table 3 and Table 4 Verification scale number (n)
40-n:.1 m0
The allowable error of the accuracy level in Table 3
ajher.2 on
:-2 5.2 Research and variation Newly manufactured or repaired -. 0. 5r. Allowable error of general accuracy scale Newly manufactured and repaired Minimum error (min) of standard scale 5.2.1 Balance of scale means that the lever force point of the scale does not swing up and down in the sight gauge, and the swing amplitude should not exceed 1 mm from the lower frame in the first cycle. 5.2.2 The variation error of empty scale shall comply with the provisions of 5.1. The first cycle of the force point end of the metering rod swinging in the sight gauge should be less than 2 tntr1.
5.2.3 The main and auxiliary brushes on the main brush mark should move freely, and the brake mechanism should open freely. 5.2.4 The vehicle with a speed of not more than 5k and a roller press running back and forth should meet the requirements of Article 5.1. 5.3 Sensitivity
When the absolute value of the magnetic code of the scale is placed on the carrier, the minimum distance of the balance pointer of the metering rod should not be less than 5rri
5.4 Reproducibility
Under the same conditions, the same evaluation bearing should be tested repeatedly, and the difference between the results should not be less than the absolute allowable error of its ring. 5.5 Loading difference of key scale
GR/T 5037
The weighing error of each bearing point shall comply with the provisions of Article 5.1. The difference between any two bearing points shall not exceed the absolute value of their allowable design error. 5.6 The maximum safety load
shall be 125 times the maximum load, and the parts and components of the scale shall not be damaged. 5.7 The maximum weighing and empty scale accuracy
shall be reduced to the maximum weighing and precision, and the precision error shall comply with the provisions of Article 5.1. 5.8
5.8.1 The maximum indication of the auxiliary scale shall be equal to the indication of one precision of the upper scale. The maximum indication of the main scale or the sum of the maximum indications of the main and auxiliary scales shall be equal to the maximum weighing of the lower part. The verification scale value must be 1×102×10°5×1* or kg (integer), and the verification scale number shall comply with the provisions of Article 4.3.
5.8.2 A balance indicator mechanism must be provided.
5.8.3 The longitudinal displacement of the key blade × blade bearing shall not exceed 1mm. 5.8.4 The scale lines, numbers and scale marks shall be clear and accurate, and the scale lines shall not be less than 2mm. 5.9 Cup
5.9.1 The cast iron guide rod shall be aged.
5.9.2 A mechanism for adjusting the arm ratio shall be provided.
5.10 Bearing The thickness of single beam bearing or steel plate shall not exceed 1/600. 5.11 The thickness of steel plate, steel plate and steel plate shall not exceed 1/600. 5.11.1 The thickness of the working part of steel plate shall be 1RC58~62, and the surface roughness shall not be less than 1RC5266. The surface roughness shall not be less than 15. 5.11.3 The contact length between the blade and the steel plate shall not be less than one-third of the matching length, and there shall be no gap at both ends. 5.11.4 The surface shall not have defects such as cracks, light loss and burns. 5.12 The surface of castings shall be flat and shall not have defects such as cracks, shrinkage, cold shut, pores and rust. 5.13 Forgings shall not have defects such as cracks, burns and rust, and the surface shall be flat, with clear edges and no cracks and rust. 5.15 The weld seam of welded parts should be smooth and the welding lamp should be clean, and should comply with the requirements of the drawings. 5.16 The coating of electroplated parts should be uniform in color and should not have defects such as marks, bubbles, exposed bottom and scratches. 5.17 The oxide film of oxidized parts should be uniform in color and should not have marks. 5-18 The paint film of painted parts should be uniform in color and should not have defects such as filtration, wrinkling, scratching and falling off. 5.19 Base metal parts should be uniform in color and should not have defects such as smearing, wrinkling, scratching and falling off. tt||5.19.1 There must be waterproof and drainage facilities. 5.19.2 The frame should be higher than the ground to prevent water from flowing in. 5.19.3 Both ends should have a stop surface of not less than the length of the load carrier. 5.19.4 The strength requirements, collapse and fracture must be met. 6 Test method
6.1 Magnetic code
The test base code is a fourth-class base code.
6.2 Empty scale variability test
GB/T 5037. 94
6.2.1 Support or press down the metering lever to make it swing in the sight gauge. It should comply with the provisions of Article 5.2.1. 6.-2.2 After adjusting the balance, move the metering lever or knife bearing (ring) along the support in turn, and focus on the knife blade. The longitudinal translation to each limited cover, the total variability error will be 5.2. 2.
6.2.3: Move the main and auxiliary scales along the main and auxiliary scales: Move back and forth three times, and the brake mechanism should comply with the provisions of Article 5.2.3: 6.2.4 The vehicle with a speed not exceeding 5km/h and a mass plate not exceeding the maximum rated pressure should run back and forth once each, which should comply with the provisions of Article 5.2.4.
6.3 Measuring lever accuracy test
6.3.1 Install the measuring lever on the calibration frame, and hang a special base plate on the key knife. Then move the measuring lever to the cold point branch line and adjust the balance.
6. 3. 2 Move the main swimming energy to the maximum scale division slot of the scale, add an appropriate amount of weights M on the code plate to balance it, and calculate the division of the scale slot according to the following formula,
; 2 Number of scale division slots (excluding zero point): 6.3.3 When the scale is calibrated on the scale calibration stand 1:, its allowable error is half of the allowable reading error of the scale. 6.4 Sensitivity test
Accuracy 1/10 The maximum and maximum scales are checked at two points for sensitivity, which should meet 5. 3. 6.5 Reproducibility test
Select any scale within the evaluation range, repeat the loading three times under the same test conditions, and the results obtained shall comply with the provisions of Article 5.
6.6 Scale accuracy test
6.6.1 Scale cutting test: Move the auxiliary snake to the lowest point without indication, and add the corresponding scale bricks at the load 1. It shall comply with the provisions of Article 5.1. 6.6.2. Test of the bearing weight: When the main scale is tested to the first notch of 1/10 of the maximum weight or greater than 1/10 of the maximum weight, the weights of the corresponding weights shall be placed one by one on the center of the load carrier and each bearing weight. The current situation shall be in accordance with Article 5.5. 6.6.3 Test of the upper scale: At the weighing point where the minimum weight, maximum weight and allowable error change, the weighing error shall comply with the provisions of Article 5.1.
6.7 Test of maximum safety
Add a weight of 125% of the maximum weight to the load carrier, make the machine bar almost balanced, and press statically for 20 minutes. The provisions of Article 5.6 shall be met. 6.8 Test of the difficulty of re-inspection and weighing After the test of Article 6.7, remove the weight to the maximum weight and empty scale. The weighing error shall comply with the provisions of Article 5.7. 6.9 Test of measuring lever and lever
Both use ear measurement,
6.10 Test of load-bearing beam
Use steel ruler to check, and shall comply with the provisions of 5.10. 6.11 Test of bearing, bearing and baffle
6.11.1 Hardness test: Use Grignard hardness tester to check the hardness value of the measuring point 2~-1 away from the workpiece and collect the average value, and shall comply with the provisions of 5.11.1 and 5.11.2. 6.11.2 Surface roughness test: Compare the roughness sample blocks. GB/T 5037-94
6.11.3 Test 5.11.3 and 5.11.1 with daily measurement. 6.12 Castings, forgings, stampings, welded parts, electroplated parts, oxidized parts, painted parts and foundation inspections are all visual inspections. 7 Inspection rules
7.1 The product must be inspected by the manufacturer's inspection department or the government-certified metrology department according to 5.1.5.2.1~5.2.3.5.3~5.7 of the technical requirements.
7.2 The fixed test lever after on-site installation and repair shall be verified by the government-certified metrology department and issued with a certificate of conformity before use. 7.3 Type inspection: Type inspection shall be carried out according to all technical requirements and test methods of the standard. Type inspection shall be carried out in one of the following situations: new products or old products are transferred to the factory for trial production and finalization identification; a. After formal production, such as when there are major changes in structure, materials and processes that may affect product performance; h. During normal production, it shall be carried out once a year;
, when the product is resumed after a long period of suspension; when the inspection results are significantly different from the above type inspection, the national quality supervision agency proposes a type inspection requirement. f.
7.4 Type inspection shall be conducted by randomly selecting 1-2 units from the qualified products. The inspection result shall be determined in accordance with the relevant regulations of the metrology department.
8 Marking, packaging, transportation and storage
8. 1 Product identification
The meter or nameplate shall indicate:
Product name:
Product model
Technology;
Trademark;
Accuracy grade symbol:
Product code:
Manufacturer's name:
Manufacture date:
License mark and code.
8.2 Packaging mark
Packaging mark shall comply with the provisions of GB191 and CB6388. : 8.3 Product packaging
8.3.1 Measuring boxes and parts and components that are easy to fall off must be packed in boxes. The moving parts should be tightened. The key parts should be padded with soft materials to prevent them from moving and bumping. Effective rain and moisture-proof measures should be taken. 8.3.2 Type and plate parts must be tied with wire. 8.3.3 The exposed knife holders and knives on the bar holders that are not packed in other boxes must be protected with protective covers to effectively prevent them from falling off, bumping and rusting. 8.3.4 Anti-rust measures should be taken for exposed surfaces that are not painted. From the time they leave the factory, they should not rust if they are stored under normal conditions for half a year. 8.3.5 If there are special requirements for packaging, they shall be agreed upon by the supply and demand parties separately. 8.4 Random information
The following technical information is supplied with the product (packed in a plastic bag in the packaging box, and it is noted that there is technical information in the box): a.
Installation diagram:
. Basic drawing:
Component drawing
Photographic drawing:
Description:
GB/T5037--94
Certificate of conformity (and the identification and inspection record of the measuring rod support should be attached); g. Packing list
8.5 Transportation
Be careful and gentle when transporting and loading and unloading. It is strictly forbidden to throw or collide with it. Prevent it from severe vibration and rain. 8.6 Storage
Storage and stacking are not allowed to touch the ground. Prevent it from being wetted by rain. It is not allowed to be stored together with corrosive substances. Additional instructions:
This standard is proposed by the Ministry of Light Industry of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Standardization of Weighing Instruments. This standard is drafted by Renlian Weighing Instrument Factory
The main contributors of this standard are Jie Guanling and Shi Jingxiang.
Installation drawing:
． Foundation drawing:
Parts drawing
Easy-to-photograph drawing:
Description:
GB/T5037--94
Certificate of conformity (and the identification and inspection record of the measuring rod support should be attached); g. Packing listbzxz.net
8.5 Transportation
Be careful and gentle when transporting and loading and unloading. It is strictly forbidden to throw or collide with it. Prevent it from vigorous vibration and rain. 8.6 Storage
When storing and stacking, it is not allowed to touch the ground, prevent it from being wetted by rain, and it is not allowed to be stored together with corrosive substances. Additional instructions:
This standard is proposed by the Ministry of Light Industry of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Standardization of Weighing Instruments. This standard is drafted by Renlian Weighing Instrument Factory
The main contributors of this standard are Jie Guanling and Shi Jingxiang.
Installation drawing:
． Foundation drawing:
Parts drawing
Easy-to-photograph drawing:
Description:
GB/T5037--94
Certificate of conformity (and the identification and inspection record of the measuring rod support should be attached); g. Packing list
8.5 Transportation
Be careful and gentle when transporting and loading and unloading. It is strictly forbidden to throw or collide with it. Prevent it from vigorous vibration and rain. 8.6 Storage
When storing and stacking, it is not allowed to touch the ground, prevent it from being wetted by rain, and it is not allowed to be stored together with corrosive substances. Additional instructions:
This standard is proposed by the Ministry of Light Industry of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Standardization of Weighing Instruments. This standard is drafted by Renlian Weighing Instrument Factory
The main contributors of this standard are Jie Guanling and Shi Jingxiang.
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