JB/T 13277-2017 Mine hoists and mine hoisting winches - Hydraulic station
1 Scope
This standard specifies the types and basic parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of hydraulic station for mine hoists and mine hoisting winches.
This standard is applicable to hydraulic stations for control of mine hoists and mine hoisting winches (hereinafter referred to as hydraulic stations).
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 191 Packaging - Pictorial marking for handling of goods
GB/T 3766 Hydraulic fluid power - General rules and safety requirements for systems and their components
GB/T 3768 Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Survey method using an enveloping measurement surface over a reflecting plane
GB 3836.1 Explosive atmospheres - Part 1: Equipment - General requirements
GB 3836.2 Explosive atmospheres - Part 2: Equipment protection by flameproof enclosures “d”
GB 3836.4 Explosive atmospheres - Part 4: Equipment protection by intrinsic safety “i”
GB/T 4879 Rustproof packaging
GB/T 7935 Hydraulic fluid power - General requirements for hydraulic components
GB/T 9969 General principles for preparation of instructions for use of industrial products
GB 11118.1 Hydraulic fluids of L-HL, L-HM, L-HV, L-HS and L-HG type
GB/T 13384 General specifications for packing of mechanical and electrical product
GB/T 14039-2002 Hydraulic fluid power - Fluids - Method for coding the level of contamination by solid particles
MT/T 776 Specification for routine inspection of coal mining machine-hydraulic system assembly
3 Types and basic parameters
3.1 The preparation of hydraulic station models shall meet the following requirements:
Example 1:
Explosion-proof hydraulic station with constant torque braking, with rope adjustment function and with a design pressure of 6.3MPa is labeled as:
JYLB-6.3T hydraulic station
Example 2:
Non-explosion-proof hydraulic station with constant deceleration braking, without rope adjustment function and with a design pressure of 14MPa is labeled as:
JYJ-14 hydraulic station
3.2 The design pressure of the hydraulic station shall meet those specified in Table 1.
Table 1 In MPa
Design pressure pmax 6.3 10 14 21
4 Technical requirements
4.1 The hydraulic station shall work normally under the following conditions:
a) when the explosion-proof hydraulic station is working, the methane concentration in the surrounding air does not exceed 1.0% (volume fraction), and the carbon dioxide concentration does not exceed 1.5% (volume fraction);
b) non-explosion-proof hydraulic stations shall not be used in places exposed to gas, coal dust and other flammable and explosive gases;
c) the hydraulic station shall be installed in the machine room with an ambient temperature of 5℃ to 40℃, a relative air humidity of not greater than 85% (at 20℃±5℃), and an altitude of not greater than 1,000m. There shall be enough space for operation and maintenance around it.
4.2 The hydraulic station shall meet the requirements of this standard, and shall be manufactured according to the drawings and technical documents approved through specified procedures.
4.3 The hydraulic system of the hydraulic station shall meet the requirements of GB/T 3766.
4.4 The standard valve used in the hydraulic station shall meet the requirements of GB/T 7935.
4.5 The elements must be installed in the place for easy adjustment and operation.
4.6 After the hydraulic station is assembled, the operation of the hydraulic valve shall be flexible, accurate and reliable.
4.7 The joint face, plug, oil gathering block, oil pipe, etc. of each valve shall be tested at 1.25 times of the design pressure for 5min, and the valve shall be free from plastic deformation and leakage.
4.8 The pressure regulating performance of the "pressure regulating device" used in the hydraulic station shall meet the following requirements:
a) When the oil pressure is the design pressure pmax, the control current I (or voltage U) shall not exceed the design value.
b) The residual pressure p0 shall meet those specified in Table 2.
Foreword i
1 Scope
2 Normative references
3 Types and basic parameters
4 Technical requirements
5 Test methods
6 Inspection rules
6.1 Inspection classification
6.2 End-of-manufacturing inspection
6.3 Type inspection
7 Marking, packaging, transportation and storage
