JB/T 3277-1991 Mine hoist and mine hoisting winch fluid

JB/T 3277-1991 Mine hoist and mine hoisting winch fluid JB/T3277-1991 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB 3277-91
Mine Hoist and Mine Hoisting Winch
Hydraulic Station
Published on 1991-07-10
Published by the Ministry of Machinery and Electronics Industry of the People's Republic of China
Implemented on 1992-07-01
Mechanical Industry Standard of the People's Republic of China
Mine Hoist and Mine Hoisting Winch
Hydraulic Station
1 Subject Content and Scope of Application
JB3277-—91
This standard specifies the basic parameters, technical requirements, test methods and acceptance rules, marking, packaging, transportation and storage of hydraulic stations for mine hoists and mine hoisting winches (referred to as hydraulic stations). This standard applies to hydraulic stations for disc brakes and radial spring brakes for mine hoists and mine hoisting winches. 2 Reference standards
GB3766
General technical conditions for hydraulic systems
GB3836.1 General requirements for explosion-proof electrical equipment for explosive atmospheres
GB7935
3 Basic parameters
General technical conditions for hydraulic components
The basic parameters of the hydraulic station shall comply with the provisions of Table 1. Table 1
Design pressure Pmax
4 Technical requirements
4.1 The product shall comply with the requirements specified in this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures. 4.2 The product shall comply with the requirements of GB3766.
4.3 The solenoid valves, motors, electrical components, etc. used in the explosion-proof winch hydraulic station shall comply with the requirements of GB3836.1. 4.4 The standard valves used in the product shall comply with the requirements of GB7935. 4.5 After the special valves of the product are assembled, the sliding valve action shall be flexible, accurate and reliable. 21
4.6 The joint surfaces, plugs and oil collecting blocks of each valve are tested with 1.25 times the design pressure pmax and maintained for 5 minutes. No oil marks are visible. 4.7 The product has no less than 20 adjustable pressure levels in the residual pressure p to design pressure Pmax range. 4.8 When the product adopts an "electro-hydraulic pressure regulating device", the pressure regulating performance shall meet the following requirements. 4.8.1 When the product oil pressure is the design pressure Pmax, the control current shall not exceed the design specified value. 4.8.2 The residual pressure p of the product shall comply with the provisions of Table 2 Table 2
Design pressure Pmax
Residual pressure.
4.8.3 When the oil pressure p is in the range of 0.2pmax to 0.8pmax, the characteristic curve p=F(1) shall be close to a straight line (as shown in Figure 1), and the oil pressure error shall not exceed the following provisions:
Approved by the Ministry of Machinery and Electronics Industry on July 10, 1991 and implemented on July 1, 1992
Wherein: Apep-
0. 8pmx 0. 2pmz × N1,MPa
JB 3277-91
AP = APer <± 5%
Ap--the oil pressure change value corresponding to the current change △, MPa. Ip(MPa)
4.8.4 The product oil pressure shall be stable, and the pressure amplitude shall not exceed the provisions of Table 3. Table 3
Design pressure
≤0.8pmax
≤0.8pmax
≤0.8pmax
4.8.5 The difference between the braking and releasing oil pressure values ​​corresponding to the same control current 1 shall not be greater than 0.3MPa. 21
4.8.6 When the disc brake is not connected, in the (0.2~~0.8)Pmax range, the time constant of the oil pressure following the current shall not be greater than 0.1s. 4.9 When the product is equipped with two sets of "electro-hydraulic pressure regulating devices", corresponding to the same control current 1, the difference in oil pressure Pmax of the two sets of "electro-hydraulic pressure regulating devices" shall not be greater than 0. 2MPa.
4.10 The product should have adjustable secondary braking performance, that is, the primary brake oil pressure p1 and the secondary brake oil pressure action time t can be adjusted as needed.
4.11-The impact value Ap of the primary brake oil pressure shall not be greater than 0.3MPa. Within the primary brake oil pressure pi and action time timx, the drop value Ap of Pl shall not be greater than 5% of pmax (as shown in Figure 2). P
JB 3277--97bzxZ.net
4.12 The hydraulic station of the single-rope winding mine hoist shall meet the "rope adjustment" requirements. 4.13 The performance of the hydraulic station used for the product shall comply with the provisions of Table 4. Table 4
Kinematic viscosity
50℃ mm*/s
Viscosity index
≥130
Note: Oxidation stability refers to the time when the acid value reaches 3.0mgkOH/g, measured in h. Oxidation stability
≥1000
Anti-foaming
mL/min
4.14 The product should be equipped with overpressure and overtemperature protection devices. The oil temperature rise shall not exceed 34℃, and the maximum oil temperature shall not exceed 70℃. The location for measuring the oil temperature should be within a radius of 200mm from the center of the oil pump suction pipe. 4.15 The accuracy level of the pressure gauge used for the product shall not be lower than level 1.5, and a damper shall be installed at the pressure gauge. 4.16 The product shall specify the highest and lowest positions of the oil level and have obvious markings. The filtration accuracy of the oil filter shall not be greater than 20 μum. 4. 17
4.18 The cleanliness of the hydraulic station should not exceed 150mg when filtered with a 200 mesh sieve. 4.19 The oil must not be stirred during use and testing of the product. When refueling, there should be a refueling pump with an oil filter and placed on one side of the oil return pipe. The product oil is required to be replaced every six months.
The product should have independently operated working brakes and safety brakes. 4.21
To ensure safety and reliability, the operation of each valve should be interlocked. When hoisting in the shaft, the secondary brake should be able to be released near the wellhead. Complete set supply scope:
Hydraulic station,
spare parts specified by the product;
Random technical documents: instruction manual, product certificate, packing list. 4.24
The service life of the product shall not be less than 20 years, and the first overhaul time shall not be less than 10 years. 5 Test methods and inspection rules
5.1 Test methods: The product shall be tested according to the test methods approved by the prescribed procedures. 5.2 Factory inspection: Each product shall be inspected before leaving the factory in accordance with Articles 4.5.4.6, 4.7, 4.8.1~~4.8.5, 4.9~4.12 of this standard.
5.2.1 Check the requirements for the product in Articles 4.5 and 4.6 of this standard. 5.2.2 Check the voltage regulation performance of the product, which shall comply with the requirements of Articles 4.7, 4.8.1~4.8.5, and 4.9 of this standard. The control current 1 shall change evenly and be measured three times. The results are listed in Table 5 and the characteristic curve is drawn, as shown in Figure 3. Table 5
Control current 1mA
Release oil pressure MPa
Brake oil pressure pMPa
p(MPa)
JB 3277--91
5.2.3Change the first-level brake oil pressure p and the action time t respectively, check the product's safety brake and second-level brake performance, which shall meet the requirements of Articles 4.10 and 4.11 of this standard.
5.2.4Check the single-rope winding double-spool mine hoist hydraulic station, which shall meet the requirements of Article 4.12 of this standard. 5.2.5Inspect the requirements of Article 4.18 of this standard. 5.3Type inspection: When the first batch of each product is manufactured, and when the structural modification will affect the technical performance of the product, in addition to meeting the factory test requirements, the product shall also be subject to type inspection in accordance with Articles 4.8.6 and 4.14 of this standard. 5.3.1Inspect the requirements of Article 4.8.6 of this standard for the product. 5.3.2 The product runs for 2 minutes at the design oil pressure pmax, 15 seconds at the residual pressure p., and continuously runs for 14 hours. Its temperature rise and maximum oil temperature shall meet the requirements of Article 4.14 of this standard.
6 Marking, packaging, transportation and storage
6.1 Each product shall be fixed with a label in a conspicuous position, and its contents shall include: a.
Product name,
Main technical parameters;
Product model,
Manufacturer name,
Factory number and date.
6.2 After the product is qualified, all exposed oil ports shall be sealed with plugs (paper, cotton yarn, wooden plugs and other debris are prohibited). 6.3 The exposed processed surface shall be coated with anti-rust grease. 6.4 The packaging shall be moisture-proof and must be strong and reliable. 6.5 The outer wall of the packaging box should have obvious text markings, as follows: a.
Address, name and destination station of the consignee; b.
Product name,
Manufacturer name, factory number and date; c.
Product net weight, gross weight, maximum dimensions and box number; d.
Storage and transportation precautions: "Prevent moisture", "Upward", "Handle with care" and other words and marks. 6.6 The accompanying documents shall be sealed in plastic bags and packed into the box, and the words "Document Here" shall be marked on the outside of the box. 6.7 The oil seal of the product shall be valid for one year from the date of shipment. 6.8 The product must be stored in an indoor warehouse or rain shelter. 4
Additional Notes:
JB3277-91
This standard is proposed by the National Technical Committee for Standardization of Mining Machinery. This standard is under the jurisdiction of Luoyang Mining Machinery Research Institute. This standard was drafted by Luoyang Mining Machinery Research Institute. The main drafter of this standard is Pei Yulan
From the date of implementation of this standard, JB3277-83 "Technical Conditions for Mine Hoists and Hydraulic Stations for Mine Hoists" will be invalid. 5
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