🔥🔥 Don’t Miss Out on Our End of Autumn Sale. If you have any questions, feel free to click the bottom right corner to contact our customer service..

Concat us[email protected]
Shopping Cart

No products in the cart.

🔍
BS EN 1804-1:2020:2021 Edition

BS EN 1804-1:2020:2021 Edition

$198.66

Machines for underground mines. Safety requirements for hydraulic powered roof supports – Support units and general requirements

Published By Publication Date Number of Pages
BSI 2021 54
PDF Format Searchable Printable Preview Now
Guaranteed Safe Checkout
Categories: ,

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. We’re here to assist you 24/7.
Email:[email protected]

This document stipulates the safety requirements for the use of support units intended by the manufacturer. Examples of support units are: frame supports, chock supports, shield supports, paired frames and push-pull support systems including the components of advancing and anchoring devices which provide support functions. This document excludes fixing elements on the conveyor, coal-winning equipment, power set legs and rams, valves, hydraulic and electro-hydraulic control units, lighting and signalling facilities and other ancillary equipment. NOTE Some components are discussed in other parts of this series of standards. This document applies for support units that are used at ambient temperatures between −10 °C and 60 °C. This document also applies to support components and support accessories which are provided if the support unit is fitted with stowing equipment. This document identifies and takes account of: – the hazards that can possibly be induced through operation of the support units; – the hazardous areas and the operating conditions that can cause any type of hazard; – the situations that can result in hazards that cause an injury or impair health; – dangers that can be caused through mine gas and/or flammable dusts. This document describes methods for reducing these hazards. Clause 4 contains a list of the hazards discussed. This document does not specify any additional requirements for: – a particularly corrosive environment; – risks associated with manufacturing, transport and decommissioning; – earthquake. A complete hydraulic powered roof support consists of the support units (EN 1804-1:2020), legs and support rams (EN 1804-2:2020) and the hydraulic and electro hydraulic controls (EN 1804-3:2020). Each part of this multipart document addresses the safety requirements of the components mentioned in the scopes of the respective parts of this multipart series. This document is not applicable to all support units manufactured before the date of its publication.

PDF Catalog

PDF Pages PDF Title
2 undefined
8 1 Scope
2 Normative references
10 3 Terms and definitions
12 4 Safety requirements
4.1 General requirements
4.1.1 General
4.1.2 Walkway
4.1.3 Protection against dust
4.1.4 Protection against ejected fluids
4.1.5 Protection against face material spalling
13 4.1.6 Lifting and pulling points
4.1.7 Forepoling devices
4.2 Stability and alignment requirements
4.2.1 Tilt-resistance
4.2.2 Alignment
4.3 Design requirements
4.3.1 Yield capability
4.3.2 Behaviour when overloaded
4.3.3 Eccentric loading
4.3.4 Loading resulting from caving or stowing
14 4.3.5 Horizontal loading
4.3.6 Fatigue strength
4.3.7 Force transmission points of legs and cylinders
4.4 Materials
4.4.1 Steel
4.4.1.1 General
4.4.1.2 Steel for welded support components
15 4.4.1.3 Steel for non-welded support components
4.4.2 Light metal
4.4.3 Materials other than steel
4.5 Permissible stresses
4.5.1 General
4.5.2 Calculated axial stresses
4.5.3 Calculated shear stresses
16 4.5.4 Calculated combined stresses
4.5.5 Calculated weld stresses
4.6 Hinge joints
4.7 Welding
5 Verification of the safety requirements
5.1 Type testing
17 5.2 Series tests
18 6 User information
6.1 General requirements
6.2 Handling, transport, and storage
6.2.1 Introduction
6.2.2 Handling and transport
6.2.3 Storage
19 6.3 Installation and commissioning
6.3.1 General
6.3.2 Installation
6.3.3 Commissioning
6.4 Operation
6.5 Maintenance
6.5.1 Introduction
6.5.2 Technical description
20 6.5.3 Maintenance instructions
6.5.4 Fault diagnosis and correction
6.5.5 Maintenance schedules
6.6 Parts identification lists
21 6.7 Marking
6.8 Residual hazards
22 Annex A (normative)Tests for verification of the safety requirements and calculation
A.1 Load tests
A.1.1 General
A.1.1.1 Introduction
A.1.1.2 Loading conditions
23 A.1.2 Single loading tests
A.1.2.1 Bending test
A.1.2.2 Tensile and compressive test
A.1.2.3 Tensile and compressive test for the force introduction points of legs and rams
A.1.2.4 Convergence test
A.1.2.5 Test with horizontal loading of chock supports
A.1.3 Cyclic fatigue test
A.1.3.1 General
25 A.1.3.2 Bending test
A.1.3.3 Torsion test
A.1.3.4 Testing with eccentric load
A.1.3.5 Test with horizontal loading of shield supports
A.2 Testing in case of a gradient and over tipped face (caving and stowing)
26 A.3 Testing in the case of gradients of more than 30°
A.4 Testing of lifting and pulling points
A.5 Testing of forepoling devices
A.6 Testing of power set legs, rams and hydraulic control systems for integration within the support unit
A.7 Testing the material properties
A.7.1 General
A.7.2 Welding suitability
A.7.3 Yield point or 0,2 % proof stress, tensile strength, elongation at fracture
A.7.4 Impact value
27 A.8 Static calculations
A.8.1 General
A.8.2 Load cases
A.8.2.1 Central loading
A.8.2.2 Eccentric loading
A.8.2.3 Horizontal loading
A.8.2.4 Superimpositions
28 A.9 Samples for loading tests
41 Annex B (normative)Structural testing requirements for longwall shields
B.1 Structural measurements
46 B.2 Acceptance criteria
B.2.1 Plastic deformation
48 Annex C (informative)List of significant hazards
51 Annex ZA (informative)Relationship between this European Standard and the essential requirements of Directive 2006/42/EC aimed to be covered

Related products

BS EN 1804-1:2020
$198.66