GB 10054.2-2014Builders hoists for goods -- Part 2: Inclined hoist with non-accessible load carrying devices (English PDF)

3.1 Rated load

Rated load Lifts designed to determine the operating condition of carrying the maximum load. The load may depend on the configuration of the elevator (ie, inclination, rail length Degree and carrier).

3.2 Rated speed

Designed to determine the speed of the carrier means.

3.3 Forced drive positive drive

Not to pass power transmission through friction.

3.4 Rope lift

ropehoist As the use of wire rope suspension system load lift.

3.5 Rope end connection wireropetermination

Or fixing the rope end connection and method allows a rope used.

3.6 Check

While maintaining a predetermined pressure, only allows the hydraulic oil in a preset direction of flow valve.

3.7 Brace base frame

For supporting and installing lifts Other lifts the lowermost part of the framework for all components.

3.8 Chassis

So undercarriage lift can run on the road.

3.9 Rails guide rails

Determining the rigid element means the path of travel of the carriage.

3.10 Bend joint kneesection

Between two rail sections change its inclination guide element.

3.11 Hoist way

All space transportation device and load operation.

3.12 Rail section guide

Composition rail structure no longer divided, commonly referred to as standard section.

3.13 Rail support guide

Between the rail and the ground or building structure to provide support for the rail connection system.

3.14 Carrier (load carrying device)

Carrier loadcarryingdevice; LCD Carrying member lifts the load.

3.15 Braking distance stop ping distance

Disconnected from the control or safety circuit to completely stop moving the carrier, the carrier means to move away from.

3.16 Song sheng slackrope

Tensioned wire rope due to external loads and in the elimination of the state.

3.17 Anti-broken rope device

Carrier means to prevent falling when the suspension rope breaks.

3.18 Landing

The carrier layer or dock loading and unloading work area.

3.19 Safe distance

safetydistance He took a lift to any moving parts and allows a channel between (inlet) minimum distance.

3.20 Running normal operation

Equipment used for general operating conditions when transporting loads, and does not include maintenance, installation and removal, etc. operating conditions.

3.21 Professional competentperson

Properly trained and the necessary guidance, have sufficient knowledge and practical experience to perform the necessary work program designee.

5.1 General

Lift shall be designed for safe use, frequent mounting and dismounting as well as maintenance and transportation. Should be considered for the correct operation of the ambient temperature At least in the range between -5 °C ~ 40 °C.

Design of all components in the installation process requires handling, such as rail section should be considered which corresponds to the weight of manual handling. When more than When the allowable weight of manual handling, the manufacturer shall give advice in the instructions for use. All removable and non-removable cover applications From the fastener tightening.

5.2.1 General

Design and manufacture of lift structure should be able to meet all the necessary predetermined intensity working condition, including the installation, removal and low temperatures Environment.

The whole structure of the components and structures should be designed to 5.2 are listed all the possible load combinations based. Load combination should consider carrying The most unfavorable position of the device and associated with the guide rail and its support loads, including the process of running the carrier and any movement, such as carrying Tilt device. Manufacturers should consider the full range of possible predetermined angle. Considered as part of the lift rail support structure.

5.2.2.1 Structure static load lift

All should be considered in addition to static load carrier and the carrier together with the movement of the device.

Static load 5.2.2.2 lift moving parts Still should be considered without any load carrying means and the movement of all carriers together equipment loads.

5.2.2.3 Carrier rated load

Rated load should be considered not in favor either side of the center, offset equal to 10% of the width of the carrier (when carrier pre When a given carrier for extended load of 25%) (see Figure 1). Specially arranged for the special materials which may be necessary to use other loads Configuration.

NOTE: X = 10% W or 25% W, see 5.2.2.3.

5.2.2.4 Carrier uniformly distributed load

To calculate, it should consider placing at least 3kN/m² uniformly distributed load carrying device on the area, supporting the load area of the guide rail Area at right angles.

5.2.2.5 The collision with the end of the rail

If the lift is designed to be driven by the carrier to the terminal running rail limit switch is triggered, the carrier shall be designed to withstand With and without rated load at rated speed is driven to the rail terminal (see also 5.5.1.8). You should consider the stall torque and driveline inertia.

5.2.2.6 Impact Coefficient

Force motion loads for all actual load gravity (carrier, the rated load, wire rope, etc.) multiplied by the impact factor µ = 1.1 0.264v, where v is the rated speed in m/s. If other factors proved to be more accurate, you can use other factors.

5.2.2.7 Anti-force action caused by broken rope device

The sum of the force for the movement of anti-load operation of the broken rope device caused by a factor of 2.5. If the load is loaded up to 1.25 times the rated load In all cases be able to verify the charge coefficient is small, you can use this smaller factor, but not less than 1.2.

5.2.2.8.1 General

Pressure q according to equation (1). q = 0.625v2w (1)

Where. q --- pressure in Newtons per square meter (N/m2); vw --- wind speed in meters per second (m/s).

Under no circumstances assume the wind blowing in any horizontal direction, the calculation should consider the most unfavorable direction.

Except as provided in 5.2.2.8.2, the wind load according to GB/T 3811 calculated, but the lift acting on the calculation of wind pressure, should at least consider

5.2.2.8.2 Acting on the carrier's air carrier

When the wind load on the computing device and is designed to carry loads (for example 1.2m × 2.5m boards) it should be assumed that the area should be solid and Multiplied by a factor 1.2. Coefficient 1.2 contains a shape factor and wind reduction factor.

5.2.2.8.3.1 Working state pressure

Does not consider the minimum height, air pressure should be q = 100N/m², the corresponding wind speed vw = 12.5m/s.

5.2.2.8.3.2 Non-working state pressure

Nonoperating pressure depends on the height above the ground and lift installation area.

Nonoperating wind pressure and wind pressure height variation coefficient according to GB/T 3811-2008 Table 18 and Table 19 selection.

5.2.2.8.3.3 Mounting and dismounting pressure conditions

Irrespective of height, minimum air pressure should be q = 100N/m², the corresponding wind speed vw = 12.5m/s.

5.2.2.9 Bearing surface of the carrier

Carrier bearing surfaces most unfavorable 0.1m × 0.1m square area should be able to withstand 75kg of static load without permanent deformation.

5.2.2.10 Installation error

Computing should be considered in any direction there is at least a mounting error of 2.5 °.

5.2.3.1 Steel

Steel member and the calculation method of connection should comply with GB/T 3811-2008 Chapter 5, and at least should be strong, Stability and the necessary connections, rigidity and other design calculations, but the safety factor in Table 3 selection. Table 3 load cases are shown in Table 5.

5.2.3.2 Aluminium structures

Aluminum structure is at least strength, stability and the necessary connections, rigidity design calculations should be carried out. When calculating the stress, you should consider deformation structures. It can be used to calculate second order theory.

Note: Refer to GB 50429. But to consider their use of the limit state design method of this part of the allowable stress design method, it applies industrial and Civil structures and differences with the elevator structure.

Allowable stress is selected according to the formula (2) the smaller the calculated safety factor according to Table 4 to select. Table 4 load cases are shown in Table 5. [sigma] = sigma S/nS or sigma b/nb (2)

Where. sS --- yield strength, in units of cattle per square millimeter (N/mm2); nS --- corresponds to the safety factor of yield strength as shown in Table 4;

[Sigma] B --- tensile strength, in units of cattle per square millimeter (N/mm2); nb --- safety factor corresponding to the tensile strength (Table 4).

A >=1.70 >=2.50 B >=1.55 >=2.25 C >=1.41 >=2.05 5.2.4 load conditions and loads and forces shall be calculated in different combinations Different combinations of load cases and loads and forces shall be calculated in Table 5.

(2) multiplied by (6) aX representatives subclause 5.2.2 to your number. For example, load conditions Ib (normal. carrier) should be calculated 5.2.2.8.3.1,5.2.2.2,5.2.2.3, 5.2.2.5 and 5.2.2.6 and the predetermined force load the table reduces to (8.3.1), (2), (3), (5) and (6). b Table 3 and Table 4.

5.2.5 Stability

For free standing installation in lifts, should load cases and safety factor in Table 6, according to equation (3) checking its stability. All the stabilizing force coefficient of 1.0. sigma M1 >=sigma M2 × n0 (3) Where. M1 --- stable torque;

M2 --- overturning moment; n0 --- stability and the safety factor overturning forces, see Table 6.

Fatigue stress analysis 5.2.6 Transmission and brake system components 5.2.6.1 respond prone to fatigue failure of all the carriers and joint fatigue stress analysis, such as shafts and gears. Analysis should be considered Power cycle characteristics and the number of stress cycles, the stress load cycles but multiple cycles.

8.5 Psychological burden too heavy or ill-prepared 5.9

Human error 8.6 7.3

11.3 Starting and stopping device 5.8.4,5.9.4,7.1.2.8

Safety signs and symbols 7.2 11.4 Information or warning device 7.2, 7.3, 11.5

16.2 Carrier 5.4 derailment

Loss of 16.3 machinery and lifting accessories mechanical strength 5.1,5.4,5.6.3

16.4 Dangerous uncontrolled movement caused 5.4,5.6.4,5.6.5,5.8

Dangerous 5.8,7.2 insufficient due to movement of the moving member 17 observation horizons