Guide rail bracket and rail installation process

1 scope

This technology is applicable to rated load 5000kg, 3M/s rated speed and the following types of Chinese-made traction drive for elevator guide rail installation.

2 construction preparation

2.1 devices, materials requirements:

2.1.1 equipment: elevator guide rails, guide rail brackets, pressure plate, plate, guide rail base and the corresponding connection screws and other specifications, quantity and packing slip matches. Product inspection certificate and technical documents.

2.1.2 material: any material should have a certificate of inspection or testing materials used. Used material is shown in table 5-2, depending on the elevator design were used.

Install the guide rail bracket and guide, table of materials 5-2

Name of material specifications

Zinc plated bolts according to the design requirements

Wall bolts according to the design requirements diameter ≥ φ 20

Δ =20 δ = 16 or steel of low carbon steel

Welding electrodes 3.2mm or 4.0mm-knot T-422 common mild steel welding rod

Portland cement grade no lower than No. 325, cement

Sand, sandy clay is less than 5%

Stone bean stone wash

2.2 the main tools:

2.2.1 small hoist, electric welding machines, hand wheel, electric hammers, nylon (orbit), steel wire ropes (fixed pulleys), roller, welding tools, hammers, wrenches, cold chisel, steel, steel box feet, feeler, look for feet, spade, spatula, bucket, small ash bucket, stones, walkie-talkies (or headphones).

2.3 operating conditions:

2.3.1 stair shaft wall construction is completed, its width, depth (depth), the vertical meets the construction requirements. Pit to lay the ground according to elevation requirements.

2.3.2 elevator construction scaffolding must comply with the relevant safety requirements, the carrying capacity of ≥ 2.5kPa (≈ 250kgf/m2), but also accord with the installation rail bracket installation and operational requirements for rail.

2.3.3 well construction of low voltage lighting to 36V. Each elevator shaft to a separate power supply (separate switches), and light brightness is large enough.

2.3.4, under communications equipment to be tested.

2.3.5 entrance hall, computer lab, scaffolding, and no debris in the shaft wall, entrance hall, room hole must have appropriate protective measures to prevent falling ladders.

2.3.6 to in no wind and no other conditions.

3 operational processes

3.1 process:

Determine the guide rail bracket location → install the guide rail bracket installation guide → → to adjust Rails

3.2 determine guide rail bracket installation location:

3.2.1 no rail brackets embedded iron elevator shaft, the guide rail bracket spacing according to drawings and installation rail bracket vertical to determine where the rail brackets on the wall.

3.2.2 when not explicitly under most of the drawing, a row of rail bracket and top row of guide rail bracket location should be determined according to the following provisions: a row of guide rail bracket installation in the pit under the most decorative above ground 1000mm of the location. Most rack mounted on the shaft in the upper row below the roof location less than 500 m m.

3.2.3 determining rail bracket locations at the same time, also consider rail connecting plate (plate) with the guide rail bracket cannot touch. Stagger the net distance of not less than 30m m (Figure 5-11).

3.2.4 If the drawing is not clearly defined, the bottom rail brackets on the basis, to every 2000mm a line guide rail bracket. Individual (if a plate) spacing can be appropriately amplified, but should not be larger than 2500mm.

3.2.5-4m (contains 4m) car guide, each of at least two guide rail bracket. 4m to 3M long car guide are not affected by this limit, but the guide rail bracket spacing shall not be greater than 2m. Drawing requirements depending on the requirements of the factory construction.

3.3 installation guide bracket:

According to the design of each lift requirements and choose one of the following methods.

3.3.1 the elevator shaft wall with embedded iron:

3.3.1.1 cleared surface of concrete embedded iron. If embedded iron within the concrete wall, is removed from the concrete.

3.3.1.2 embedded iron rail bracket vertical verification of installation location, if their position offset, do not meet the installation requirements, embedded iron welding on plate. Plate thickness δ ≥ 16mm, length does not exceed 300mm. When more than 200mm, the end not less than φ 16 bolts fixed on the wall. Installing plate with the original embedded iron lap length is not less than 50mm, demanding full welded on three sides (Figure 5-12).

3.3.1.3 Setup guide bracket: (a) before you install the guide rail bracket, to review by the model down on the baseline (baseline from the guide rail bracket flat 1~3mm, 80~100mm space between two lines, one of which is to guide the Center for accurate baseline and the other one is to install the guide rail bracket Guide (Figure 5-13). (B) measure the actual height of each rail bracket away from the wall, and numbered sequentially processed; (c) under the guide rail bracket center line and plane Guide, determine the guide rail bracket position, carry out leveling, alignment. Then weld; (d) entire guide rail bracket roughness should be less than 5mm;

(E) to ensure the guide bracket flat contact with the rail surface-sealed, bracket end vertical errors of less than 1mm (5-14), and (f) guide rail bracket with embedded iron contact surfaces should be tight, welded inside and outside four weeks full welding, welding should be not less than 5mm. Welding meat should be full and no slag, undercut, porosity, etc.

3.3.2 expansion bolts for fixing guide rail bracket:

Concrete elevator shaft wall using expansion bolts no embedded iron directly onto guide rail bracket. Using expansion bolt specifications must conform to the elevator factory drawings. If the manufacturer is not required, expansion bolt specifications not less than 16mm. 3.3.2.1 Expansion bolt hole locations to be accurate and perpendicular to the wall, depth should be appropriate. After the expansion bolts are generally fixed, sheath end and outside wall surface (Figure 5-15).

3.3.2.2 If the wall vertical error greater local tick, and guide rail bracket contact surfaces of clearance less than 1mm, and then use the shims mat real (Figure 5-16).

3.3.2.3 rail bracket number processing.

3.3.2.4 rail brackets are in place and are leveling. Expansion bolts.

3.3.3 screw bolt for fixing guide rail bracket:

3.3.3.1 if the elevator shaft is thin, not to use expansion bolts fixing guide rail bracket and not embedded iron can be used wall through hole, screw fixing plate (δ ≥ 16mm). Bolts, lateral wall on walls to add 100x100x12 (mm) Horn, to increase the strength. As shown in Figure 5-17, the guide bracket welded on a sledge.

3.3.3.2 machining and mounting rails scaffold method and requirements complete with embedded iron.

3.3.4 the use of concrete guide rail bracket:

Ladder wall is brick, generally using tick rail bracket holes, constructed with concrete guide rail bracket.

3.3.4.1 rail bracket holes should tick in the small depth of not less than 130mm (Figure 5-18).

3.3.4.2 rail bracket number processing and into the ends of wall to cut dovetail (Figure 5-19).

3.3.4.3 flush holes in the wall, the dust residue was washed out, walls are wet.

3.3.4.4 built rail brackets made of concrete with cement, sand, bean rock by 1:2:2 made of volume ratio and add appropriate amount of water and mix. Building guide rail support with this concrete holes filled. Buried into a wall bracket depth not less than

120mm, leveling and alignment.

3.3.4.5 rail bracket steady chikugo no collision at room temperature after 6-7 days of conservation, achieve the required strength, to mounting rail (track).

3.3.4.6 for guide rail bracket level errors in previous.

3.4 Installation Guide:

3.4.1 from the boilerplate on the baseline to pit (base line from the rail end Center 2~3mm) and fixed (Figure 5-20).

3.4.2 Foundation pit erected steel guideway must be leveling pad solid, standard error is less than 1/1000. Channel based location determined, concrete pouring real smooth all around it. Steel base angle iron frame for fixing guide rail on the ends, use a guide after the baseline alignment, and then fixed (Figure 5-21).

3.4.3 If the Guide no slot steel base, can be under the rail pad thickness δ ≥ 12mm, area of 200mmx200mm of steel plate and welding spot welding and rail (Figure 5-22).

3.4.4 guides lubricated with oil, need based guide to 40mm lower margin before a face part cut off, to allow oil box position (Figure 5-23).

3.4.5 a pulley hanging on top of the ladder under the floor well fastened. Installed at the Office of top gate and fix a 0.5T winch (Figure 5-24).

3.4.6 hook hook for the Rails to be used when lifting guide plate (Figure 5-25).

If your guide is light and lift height is small, can be human, using φ ≥ 16 nylon rope instead of hoist installation guide.

3.4.7 if manpower increase one by one from the bottom up. Who used small winches to upgrade, you can guide

Up to a certain height (you can easily attach Rails), connect another guide. Integral hoisting method for multiple guides, pay attention to the bearing capacity of hoisting appliances, lifting total weight does not exceed 3kN (≈ 300kg) can be divided into several lifting a whole track in place.

3.5 adjustment rail (track):

3.5.1 using steel ruler to check rail end and the spacing of the baseline and the center distance, as does not meet the requirements, you should adjust the guide rail distance from Central and and then carefully look for feet.

3.5.2 road checks, looking for Rails (Figure 5-26).

3.5.2.1 distortion adjustment: seek-leveled, two pointer and tail sides and rail lateral faces flat, stickers, and refers to the pointer tip at both ends at the same level, indicating no distortions. Relatively horizontal lines such as stickers or drift off that there are distortions, you use special gaskets to adjust clearance between guide rail bracket and rail (gasket does not allow more than three pieces) so that it meets the requirements. In order to ensure measurement accuracy, after using the above method will look for a reverse 180 °, using the same method for measuring and regulating, until it meets the requirements.

3.5.2.2 adjustment of verticality and central location; adjust the guide position so that they face compared with baseline, Center, and provides clearance (if 3mm) (Figure 5-27).

3.5.2.3 spacing: when punctuality will guide interval of length l is looking for small feet 0.5~1mm road leveled, using feeler gauges to measure gap between road and rail end, so that it meets the requirements. (Looking for punctuality in rail carriages and two support center. ) L space between two rail end (Figure 5-28), deviations in the rail height shall comply with table 5-3 requirements as a whole.

Two-track surface deviation requirements for spacing table 5-3

Elevator speed over 2m/s 2m/s

Rail car on the car

+1

-0 +2

-0 +2

-0 +2

-0

The three must be adjusted simultaneously, so as to meet the requirements.

3.5.3 fixes rail joints working face

3.5.3.1 rail joints, rail straightness 500mm face plate ruler against the guides face, using feeler gauges check for a, b, c, d (see Figure 5-29), are provided in tables should be not more than 5-4 (joints at steel ruler 250mm).

Rails face straightness tolerance table 5-4

Rail connections a b c d

Not greater than (mm) 0.15 0.06 0.15 0.06

Figure 5-29

3.5.3.2 rail joints total length there should be no gap in a row, local gap not more than 0.5mm (Figure 5-30).

3.5.3.3 two rails of side face and step end joints should be not more than 0.05mm (Figure 5-31).

Should step down a slope with a hand wheel or stone grinding, grinding length shall conform to the requirements in table 5-5.

Bench grinding length table 5-5

Lift speed (m/s) 3M/s more than 3M/s below

Trimming length (mm) 300 200

4 quality criteria

4.1 project:

4.1.1 rail firm, distance between surfaces in relative deviation and deviation between two rails must conform to the requirements in table 5-6.

4.1.2 when the weight (or car) buffers when fully compressed, car (or heavy) Guide length must be not less than 0.1+0.035V2 (in metres) further guidance of the programme.

4.2 Basic project:

Guide rail bracket should be mounted firmly, correct position, correct anyway. When welding, double welded, and weld full, even ripple.

Inspection method: Visual check.

4.3 allowable deviation:

Guide rail Assembly tolerances, dimensions, requirements and test methods should meet the requirements of table 5-7.

Guide Assembly tolerances, dimensions, requirements and testing methods of table 5-7

Project tolerances or dimensions (mm) test method

1 of the verticality (per 5M) 0.7 hanging wire, standard checking

Local gap 0.5 use feeler gauges to check

Steps of 0.05 with a steel ruler, feeler gauges check

≥ 300

B, c ≥ 200

Top 3 guides from the top of the guide rail distance ≤ 500 foot check

5 finished product protection

5.1 Transportation Guide, don't hit the ground. Local side was ready to surface when using the grass bag or Fiberboard, protection, and to lift rail transport, do not drag or rolling by rollers transport.

5.2 when the guide is long, to ladder the transport situation was encountered, can be used to guide similar to the long and short of wood instead of Rails, repeated tests to find the best means of transport. If it is necessary to destroy structures, and civil engineering, design consultation, must not operate.

5.3 when picking out the light boxes, buttons, boxes, guide rail bracket holes, placed the main embedded parts of steel or not without damage, looking for units, such as departments of civil engineering, design consultation.

5.4 in the legislative guide rail bracket is installed in the process to protect, not collisions.

5.5 Guide and other attachments placed in the open air must have a rain and snow prevention measures. Equipment mats below, avoid moisture.

6 quality problems to be noticed

6.1 concrete guide rail bracket loose, to tick up, according to the method described before pouring in, not based on the original patch.

6.2 expansion bolts for fixing guide rail bracket loose rock, where you want to change the guide rail bracket up or down, re-installed expansion bolts.

6.3 welding rail brackets to be welded successfully. Do not adjust the track after welding to prevent affecting adjustment accuracy.

6.4 combined after completion of guide rail bracket guide rail adjustment shall be connected parts spot welding, to increase its strength.

6.5 fixed-guideway with pressure plate, fastening screws must be and rail systems. Methods that do not allow welding or screws directly (without a pressure plate) will guide fixed to the guide bracket.

6.6 when adjusting the Guide, in order to ensure the accuracy of adjusting, in the guide rail bracket and the two adjacent rail bracket guide rail set in the middle of the measuring point.

6.7 winter tried not using concrete guide rail bracket mounting rail bracket. At the time of rejection of building-brick wall rail bracket holes, to be careful not to damage the wall.